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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 33. Отображено 33.
18-10-2018 дата публикации

SLURRY SHIELD TAIL BRUSH REPLACEMENT SAFETY PROTECTION DEVICE AND METHOD USING LIQUID NITROGEN FREEZING

Номер: WO2018188531A1
Принадлежит:

Disclosed is a slurry shield tail brush replacement safety protection device using liquid nitrogen freezing, comprising, arranged from outside to inside, a shield tail shell (1), shield tail brushes (2) and segments (3), the shield tail shell (1) being provided internally with mortar pipes (4); said device further comprises at least one group of liquid nitrogen freezing devices, the liquid nitrogen freezing devices being provided inside the shield tail shell (1) between adjacent mortar pipes (4); the liquid nitrogen freezing devices each comprises a liquid inlet pipe (5), a liquid outlet pipe (6), and an annular freezing pipe (7), the liquid inlet pipe (5) and the liquid outlet pipe (6) respectively having one end thereof connected with a stainless steel flexible hose (8) and a low-temperature liquid nitrogen valve (9); the stainless steel flexible hose (8) and the low-temperature liquid nitrogen valve (9) are provided between a shield machine main shell (11) and the shield tail shell ( ...

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11-07-2023 дата публикации

Method for reducing operating temperature of server of monitoring system of ultra-high voltage transformer substation

Номер: CN116414198A
Принадлежит:

The invention belongs to the technical field of high-voltage power transformation, and discloses a method for reducing the operating temperature of a server of a monitoring system of an ultra-high-voltage transformer substation. The method is characterized by comprising the following steps of improving the overall ventilation rate of the screen cabinet door, improving the observation convenience of the dust accumulation condition, adopting a convenient dust removal mode, and adopting the step of researching and developing a temperature real-time monitoring module. The system has the following main beneficial technical effects that the ventilation rate of the whole screen cabinet is greatly improved, the time consumed for checking the dust accumulation state of the dust cover is shortened, the dust cleaning speed of the air return opening is increased, and the temperature exceeding early warning response speed is increased; the operating temperature of the server of the monitoring system ...

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30-05-2023 дата публикации

Lung cancer diagnostic kit and detection method

Номер: CN116179709A
Принадлежит:

The invention relates to the technical field of kits, in particular to a lung cancer diagnostic kit and a detection method. The lung cancer diagnostic kit comprises a reagent for detecting the methylation level of genes in lung tissue; the lung cancer diagnostic kit and the detection method provided by the invention have the beneficial effects that the methylation levels of genes CYCS, LOC283585, ZNF316, THEG5, MIR1233-1 and LOC102724050 in lung tissues of patients with lung cancer and benign lung diseases have significant difference, and the methylation levels of the six genes are subjected to machine learning training, so that a dichotomy model capable of distinguishing the lung cancer from the benign lung diseases can be obtained; therefore, accurate discrimination of lung cancer and benign lung diseases is realized.

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22-03-2018 дата публикации

UNIVERSAL ALPHA-OLEFIN POLYMERISATION INDUSTRIAL CATALYST, AND APPLICATION THEREOF

Номер: WO2018050127A3
Принадлежит:

Disclosed are a universal alpha-olefin polymerisation industrial catalyst, and an application thereof, specifically an industrial production catalyst which consists of (A) a solid catalyst component, (B) a cocatalyst organoaluminium compound and (C) an external electron donor compound, and is used for various alpha-olefin polymerisation or copolymerisation processes. The solid catalyst component (A) is prepared from a dibutyl phthalate or diisobutyl phthalate and 9,9-bis(methoxymethyl)fluorene composite internal electron donor. A hydrocarbyl alkoxy silicon, an organic acid ester or a hydrocarbyl alkoxy silicon and organic acid ester composite acts as the external electron donor component (C). The solid catalyst component (A), the cocatalyst organoaluminium compound (B) and the external electron donor compound (C) are used together in industrial devices for various alpha-olefin polymerisation or copolymerisation processes to produce new grades of poly-alpha-olefins.

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19-03-2020 дата публикации

ZIEGLER-NATTA CATALYST HAVING DUAL-FUNCTION EXTERNAL ELECTRON DONOR, AND APPLICATION THEREOF

Номер: WO2019144976A3
Принадлежит:

Disclosed are an alpha-olefin polymerisation Z-N catalyst, and an application thereof, specifically an industrial production catalyst which consists of (A) a solid catalyst component, (B) a cocatalyst organoaluminium compound and (C) a dual-function external electron donor compound, and is used for alpha-olefin polymerisation or copolymerisation processes. The catalyst component comprises magnesium chloride as a carrier, a transition metal such as titanium and a composite aromatic diacid diester/1,3-diether as an internal electron donor. One or more organoaluminiums act as a cocatalyst. The dual-function external electron donor is a composite of a composite external electron donor hydrocarbyl meth(eth)oxy silicon and a polymerisation temperature control agent organic acid ester. The Z-N catalyst is used for alpha-olefin polymerisation or copolymerisation reactions, self-controls the polymerisation reaction rate during high-temperature polymerisation, maintains a stable reactor operation ...

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22-03-2018 дата публикации

UNIVERSAL ALPHA-OLEFIN POLYMERISATION INDUSTRIAL CATALYST, AND APPLICATION THEREOF

Номер: WO2018050127A2
Принадлежит:

Disclosed are a universal alpha-olefin polymerisation industrial catalyst, and an application thereof, specifically an industrial production catalyst which consists of (A) a solid catalyst component, (B) a cocatalyst organoaluminium compound and (C) an external electron donor compound, and is used for various alpha-olefin polymerisation or copolymerisation processes. The solid catalyst component (A) is prepared from a dibutyl phthalate or diisobutyl phthalate and 9,9-bis(methoxymethyl)fluorene composite internal electron donor. A hydrocarbyl alkoxy silicon, an organic acid ester or a hydrocarbyl alkoxy silicon and organic acid ester composite acts as the external electron donor component (C). The solid catalyst component (A), the cocatalyst organoaluminium compound (B) and the external electron donor compound (C) are used together in industrial devices for various alpha-olefin polymerisation or copolymerisation processes to produce new grades of poly-alpha-olefins.

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06-08-2020 дата публикации

SWITCHGEAR TROLLEY PROVIDED WITH LIGHTNING ARRESTER AND SWITCHGEAR USING SAME

Номер: WO2020155946A1
Принадлежит:

A switchgear trolley provided with a lightning arrester and a switchgear using the same. The switchgear trolley provided with a lightning arrester comprises a frame (10). A faceplate (11) is provided at a rear side of the frame (10). The frame (10) is provided with a contact arm (30) positioned at a front side of the faceplate (11). The switchgear trolley further comprises a lightning arrester (20) connected to the contact arm (30). A rear end of the lightning arrester (20) is fixed at the frame (10). A rear end of the contact arm (30) is fixed at a front end of the lightning arrester (20). The switchgear comprises a trolley compartment and the switchgear trolley provided with a lightning arrester. In the above solution, the contact arm (30) is directly installed at the frame (10) by means of the lightning arrester (20), thereby reducing occupied space in a radial direction of the contact arm (30). Compared with existing structures, the trolley of the invention has a compact structure and ...

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30-05-2023 дата публикации

Space radio signal acquisition and analysis method and device

Номер: CN116184042A
Принадлежит:

The invention discloses a space radio signal acquisition and analysis method and device, and the method comprises the steps that a lower computer receives a configuration parameter and an acquisition starting instruction sent by an upper computer, and collects a space radio signal according to the configuration parameter; wherein the configuration parameters comprise a first time resolution, a first frequency resolution and a first acquisition mode, the first time resolution belongs to a plurality of preset time resolutions, the first frequency resolution belongs to a plurality of preset frequency resolutions, and the first acquisition mode is a time domain acquisition mode or a frequency domain acquisition mode. According to the method, multiple time resolutions and multiple frequency resolutions are supported, specifically, the actual use resolution requirement is set for the lower computer through the upper computer, and compared with a traditional single time resolution or frequency ...

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28-03-2019 дата публикации

METHOD FOR CONSTRUCTING CAVITY BEHIND TUNNEL LINING, AND COMPOSITE LINING STRUCTURE FORMED AFTER CONSTRUCTION

Номер: WO2019056794A1
Принадлежит:

A method for constructing a cavity behind a tunnel lining comprises the following steps: drilling a pouring hole in a surface of a lining; mounting a pouring pipe inside the pouring hole; pouring foam concrete into a cavity behind the lining via the pouring pipe to form a cushioning layer; filling a cavity of a large collapsed section or other sections of a road; and using waterproof mortar to seal the pouring pipe, such that the surface of the pouring pipe is flush with the lining. The application further provides a composite lining structure formed after completing the above construction steps. A pouring hole is provided inside the lining, the pouring pipe is provided inside the pouring hole, and the pouring pipe is inserted into the cavity at a depth of 1-4 m. The pouring pipe and the pouring hole engage with each other and are respectively sealed. An outer side of the lining is a foam concrete layer, and a waterproof mortar column is provided inside the pouring pipe. The solution effectively ...

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16-05-2023 дата публикации

Composite insulator non-contact defect detection system based on ultrasonic phased array

Номер: CN116124894A
Принадлежит:

The invention relates to the technical field of ultrasonic flaw detection, and discloses a composite insulator non-contact defect detection system based on an ultrasonic phased array, the composite insulator non-contact defect detection system comprises a detection mechanism and a detection host, the detection mechanism comprises a transparent water tank and a rectangular frame fixedly mounted in the transparent water tank, the bottom of the rectangular frame is integrally connected with supporting legs, and the supporting legs are fixedly connected with the detection host. A fixing assembly is arranged at the bottom of the rectangular frame, a pressing assembly is arranged at the top of the rectangular frame, a detection assembly is arranged on one side of the rectangular frame, and the bottoms of the supporting legs and the bottom of the transparent water tank are fixedly installed. According to the composite insulator non-contact defect detection system based on the ultrasonic phased ...

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01-08-2019 дата публикации

ZIEGLER-NATTA CATALYST HAVING DUAL-FUNCTION EXTERNAL ELECTRON DONOR, AND APPLICATION THEREOF

Номер: WO2019144976A2
Принадлежит:

Disclosed are an alpha-olefin polymerisation Z-N catalyst, and an application thereof, specifically an industrial production catalyst which consists of (A) a solid catalyst component, (B) a cocatalyst organoaluminium compound and (C) a dual-function external electron donor compound, and is used for alpha-olefin polymerisation or copolymerisation processes. The catalyst component comprises magnesium chloride as a carrier, a transition metal such as titanium and a composite aromatic diacid diester/1,3-diether as an internal electron donor. One or more organoaluminiums act as a cocatalyst. The dual-function external electron donor is a composite of a composite external electron donor hydrocarbyl meth(eth)oxy silicon and a polymerisation temperature control agent organic acid ester. The Z-N catalyst is used for alpha-olefin polymerisation or copolymerisation reactions, self-controls the polymerisation reaction rate during high-temperature polymerisation, maintains a stable reactor operation ...

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02-05-2023 дата публикации

Relay protection device outlet matrix test device and test method

Номер: CN116047208A
Принадлежит:

The invention belongs to the technical field of relay protection, and discloses a relay protection device outlet matrix testing device which is characterized by comprising a programmable controller module, a control module, a peripheral circuit module, a power supply module, a human-computer interface module and a device shell module. The invention further discloses a testing method. The method has the main beneficial technical effects that the test time of the outlet matrix is shortened from 98min to less than 60min, and the probability of impact and loss on the power grid due to the fact that the protection cannot act when a fault occurs when the protection is exited from the power grid is reduced. The safe operation capability of power grid equipment is improved; the protection quit time is shortened, the stable operation capability of the power grid is improved, and the social benefit is improved. In the prior art, a test process is complex and operation steps are many; the test wiring ...

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09-08-2018 дата публикации

SELF-REGULATING EXTERNAL ELECTRON DONOR-CONTAINING CATALYST USED FOR ALPHA-OLEFIN POLYMERISATION, AND APPLICATION OF CATALYST

Номер: WO2018050126A3
Принадлежит:

An alpha-olefin polymerisation Z-N catalyst, and an application thereof, specifically an industrial production catalyst which consists of (A) a solid catalyst component, (B) a cocatalyst organoaluminium compound and (C) an external electron donor compound, and is used for alpha-olefin polymerisation or copolymerisation processes. The catalyst component comprises a transition metal such as titanium or magnesium and a composite aromatic diacid diester/1,3-diether as an internal electron donor, one or more organoaluminiums or mixtures thereof act as a cocatalyst, and the external electron donor which self-regulates the polymerisation rate comprises one or more structure control agents, hydrocarbyl methoxy silicons, and one or more activity regulators, organic acid ester composites. The Z-N catalyst is used for alpha-olefin polymerisation/copolymerisation reactions, self-regulates the polymerisation reaction rate during high-temperature polymerisation, and maintains a stable reactor operation ...

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22-03-2018 дата публикации

SELF-REGULATING EXTERNAL ELECTRON DONOR-CONTAINING CATALYST USED FOR ALPHA-OLEFIN POLYMERISATION, AND APPLICATION OF CATALYST

Номер: WO2018050126A2
Принадлежит:

Disclosed are an alpha-olefin polymerisation Z-N catalyst, and an application thereof, specifically an industrial production catalyst which consists of (A) a solid catalyst component, (B) a cocatalyst organoaluminium compound and (C) an external electron donor compound, and is used for alpha-olefin polymerisation or copolymerisation processes. The catalyst component comprises a transition metal such as titanium or magnesium and a composite aromatic diacid diester/1,3-diether as an internal electron donor, one or more organoaluminiums or mixtures thereof act as a cocatalyst, and the external electron donor which self-regulates the polymerisation rate comprises one or more structure control agents, hydrocarbyl methoxy silicons, and one or more activity regulators, organic acid ester composites. The Z-N catalyst is used for alpha-olefin polymerisation/copolymerisation reactions, self-regulates the polymerisation reaction rate during high-temperature polymerisation, and maintains a stable reactor ...

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18-10-2018 дата публикации

METHOD AND DEVICE FOR EMERGENCY SLURRY SUPPLEMENT CIRCULATION PROCESS USED FOR SLURRY SHIELD

Номер: WO2018188530A1
Принадлежит:

Disclosed are a method and device for an emergency slurry supplement circulation process used for a slurry shield, comprising a basic slurry supplement part and an emergency slurry supplement part. In the basic slurry supplement part, new slurry in a new slurry tank (6) is transported into a slurry mixing tank (5), and the new slurry is mixed with filtrated slurry in a sedimentation tank (4) to form supply slurry so as to supplement the shield. The basic slurry supplement part may meet requirements for slurry under regular conditions. When an emergency requiring a large amount of slurry supplement occurs, construction workers may carry out emergency supplementation by transporting slurry in the sedimentation tank directly to the new slurry tank to mix with bentonite of a shear pump (81) in the new slurry tank, thereby quickly obtaining a new slurry, or directly blending materials such as bentonite in a slurry warehouse (8) and transporting highly concentrated slurry prepared in the shear ...

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18-10-2018 дата публикации

COVERING EARTH BALANCING AND SAFE RECEIVING METHOD FOR LARGE-DIAMETER TUNNEL BORING MACHINE

Номер: WO2018188529A1
Принадлежит:

Disclosed is a covering earth balancing and safe receiving method for a large-diameter tunnel boring machine. Steps are as follows: determining a penetrating posture of a tunnel boring machine, closing and reinforcing a reinforced area, lowering the water level of the reinforced area, breaking and removing a door of a receiving well and constructing a base, filling earth and filling water, advancing forward the tunnel boring machine, and receiving the tunnel boring machine. The method allows the tunnel boring machine to safely arrive at the receiving well while maintaining water-earth pressure balance and effective reaction force; in addition, to reduce construction risks, a safeguard of in-water arrival is employed for receiving the tunnel boring machine, the advantages are safeness and inexpensiveness, and improved implementation of the safe receiving of the tunnel boring machine is allowed.

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28-07-2023 дата публикации

Hot die forging press with cleaning function for electrical machinery

Номер: CN116493529A
Принадлежит:

The invention discloses a hot die forging press with a cleaning function for electrical machinery, and relates to the technical field of hot die forging presses, the hot die forging press comprises a supporting base and a hot die forging press body, a lifting supporting arm is welded to the top of the supporting base, and a bearing table is welded to the outer wall of the inner side of the lifting supporting arm; the hot die forging press body is fixedly mounted at the top of the bearing table, the working end of the hot die forging press body extends to the bottom of the bearing table and is detachably connected with a male die, a self-cleaning mechanism is arranged at the top of the supporting base, and a waste gas purification mechanism is arranged at the top of the bearing table. Through the design of the side supporting arm, the rotating seat and the stepping motor, the pressed table can be driven to turn over, the female die body is synchronously driven to turn over, scraps remaining ...

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11-08-2023 дата публикации

Deacidification system

Номер: CN116571074A
Принадлежит:

The invention discloses a deacidification system which comprises a rotary spray deacidification tower, a plurality of tangential hole bodies are formed in the position, close to the bottom end, of a barrel of the rotary spray deacidification tower, and an air supply unit is connected to the outside of each tangential hole body and used for inputting tangential hot air into the rotary spray deacidification tower; the temperature of the hot air is equivalent to that of flue gas to be treated in the rotary spray deacidification tower; the orientation of the tangential hole body in the rotary spray deacidification tower is the same as the motion direction of flue gas to be treated in the rotary spray deacidification tower; hot air is input through each tangential hole body, so that an airflow protection layer is formed on the inner wall of the rotary spray deacidification tower. By means of the structural arrangement of the deacidification system, the defects of an existing waste incineration ...

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29-08-2023 дата публикации

Sprayed concrete bonding strength tester

Номер: CN116660145A
Принадлежит:

A sprayed concrete bonding strength tester comprises a case, a door-shaped support is fixedly arranged on the upper surface of the case, a connecting screw is fixedly welded to the center of the lower portion of a cross beam on the door-shaped support, the connecting screw is in threaded connection with an upper threaded hole of a tension sensor, and a lower threaded hole of the tension sensor is in threaded connection with a ball head pull rod A in a stretching device; a sliding sleeve is arranged in the middle core of the upper surface of the machine box, a ball head pull rod B in the stretching device penetrates into the sliding sleeve and is in threaded connection with the upper end of a vertical shaft in a lifting transmission device arranged in the machine box, and a ball head pull rod A and the ball head pull rod B are kept coaxial in the vertical direction. When the device is used, the test core sample does not need to be polished, the large bevel gear and the small bevel gear are ...

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22-08-2023 дата публикации

Appearance quality inspection method and system based on machine vision identification

Номер: CN116626036A
Автор: HE QINGYUN, WANG DAN, WANG HUAN
Принадлежит:

The invention relates to an appearance quality inspection method and system based on machine vision recognition. The method comprises the following steps: acquiring a photographed image of to-be-tested terminal equipment; recognizing the photographed image based on an OpenCV image recognition algorithm to obtain parameter data; judging whether the parameter data is qualified or not; and if not, performing disqualification marking on the photographed image. The method has the effect of improving the working efficiency.

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09-05-2023 дата публикации

Clostridium sp. For degrading straw cellulose as well as application and preparation of clostridium sp.

Номер: CN116083280A
Принадлежит:

The invention discloses clostridium for degrading straw cellulose as well as application and a preparation of the clostridium. The clostridium has the preservation number of CGMCC (China General Microbiological Culture Collection Center): 25756 in the China General Microbiological Culture Collection Center). The strain can efficiently degrade cellulose in straws, is beneficial to realizing green circulation, and improves the crop yield while fully utilizing the straws.

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30-05-2023 дата публикации

Method for shortening daily average fault time of scheduling data network

Номер: CN116191670A
Принадлежит:

The invention belongs to the technical field of power dispatching, and discloses a method for shortening daily average fault time of a dispatching data network, which is characterized by adopting the following measures: configuring a router into a double-path power supply access power supply; the fiber core attenuation is controlled to be less than or equal to 1db; the internal storage capacity of the router is improved and guaranteed, and the internal storage capacity of the router is larger than or equal to 512 M; it is ensured that the packet forwarding capacity is larger than or equal to 200 kbps; the grounding resistance is less than or equal to 0.5 omega; good contact and oxidation of the 2M wire are ensured; the regular inspection number is ensured, and the inspection frequency gt is ensured; one time/quarter; a standard operation supporting platform is arranged; the training score of the business personnel is greater than or equal to 90, and the annual training frequency is greater ...

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08-08-2023 дата публикации

Inclined hanging steel structure and mounting method thereof

Номер: CN116556587A
Принадлежит:

The invention discloses an inclined hanging steel structure and a mounting method thereof. The inclined hanging steel structure comprises a top hanging stress steel beam and a lower hanging stress steel beam which are arranged between a core tube and an outer frame inclined column in the horizontal direction, and the lower hanging stress steel beam is located under the top hanging stress steel beam; a hanging column is arranged on the lower end face of the top hanging stress steel beam, the relative lower end of the hanging column in the height direction gradually inclines towards the core tube, the two ends of the hanging column in the height direction are detachably connected with a first chain block and a second chain block correspondingly, and the first chain block is used for being detachably hung on a tower crane hook; a lifting hook of the second chain block is detachably connected to the opposite upper end face of the lower hanging stress steel beam in the height direction. A plurality ...

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07-07-2023 дата публикации

Floor brush structure and cleaning equipment

Номер: CN116392045A
Автор: WANG HUAN, LIU SHENGHUI
Принадлежит:

The invention provides a floor brush structure and cleaning equipment, the floor brush structure comprises a cyclone separation unit (100), a shell (200) and a rolling brush assembly (300), the shell (200) is provided with an air duct (210), and the air duct (210) is provided with a dirt suction port (211); the cyclone separation unit (100) comprises a separation box (110) and a separation assembly (120), the rolling brush assembly (300) comprises a mopping rolling brush (310) and a dust collection rolling brush (320), the mopping rolling brush (310) and the dust collection rolling brush (320) are rotatably arranged on the shell (200), the dust collection rolling brush (320) is located in front of the dirt suction port (211), and the separation box (110) is communicated with the air duct (210); the separation assembly (120) is used for separating fluid entering the separation box (110) through the air duct (210). According to the floor brush structure, the cleaning efficiency can be improved ...

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27-07-2016 дата публикации

Recycle thermal power plant flue gas waste heat and carbon dioxide's device

Номер: CN0205398604U
Принадлежит:

... 本实用新型涉及废物综合利用、节能减排绿色生产的循环经济技术领域,目的是提供种回收利用火电厂烟气余热和二氧化碳的装置,包括用于吸收烟气中二氧化碳的微藻养殖单元、将微藻水热液化制油的水热液化单元、将液化废水降解处理的废水降解单元以及烟气余热利用单元;所述的微藻养殖单元、水热液化单元、废水降解单元依次通过管路连接;所述烟气盘管设置在光合细菌培养器内,两端分别与风机、微藻养殖单元通过管路连接。本实用新型同时实现了烟气余热利用、二氧化碳减排、微藻固碳封闭碳循环、微藻制备液体燃料和废水资源化利用,能保护环境、缓解资源能源紧张,符合人类可持续发展的需求。 ...

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15-08-2023 дата публикации

Method for improving performance of resistance spot welding joint of hot forming steel of thick scale

Номер: CN116586734A
Принадлежит:

The invention discloses a method for improving the performance of a thick oxide scale hot forming steel resistance spot welding joint. The method comprises the following steps that (1) the preheating current Ip and the preheating time tp are determined; (2) three pulses are used for welding, and the pulse time tw is determined; (3) determining a critical splashing current I0, and then determining a current value It and tempering time tt of a tempering pulse; (4) the cooling interval time tc1 between the preheating pulse and the welding pulse, the welding pulse interval time tc2 and the cooling interval time tc3 between the welding pulse and the tempering pulse are determined; (5) the welding pressure P is determined; and (6) determining the dwell time th. And (7) resistance spot welding is carried out through an intermediate-frequency direct-current spot welding machine. The method has the advantages of inhibiting splashing, widening a welding process window, improving joint performance ...

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16-05-2023 дата публикации

Soil resistivity detection method based on grounding integrity detection of power transmission line

Номер: CN116125141A
Принадлежит:

The invention relates to the technical field of soil resistivity detection, and discloses a soil resistivity detection method based on power transmission line grounding integrity detection, and the method comprises the following steps: S1, piling: piling a plurality of grounding piles in a grounding grid; s2, wiring, wherein a wire is led out from the grounding wire and is connected with the grounding piles in sequence; s3, connecting a detection meter, and connecting a detection line of the detection meter with the grounding pile; s4, detection: carrying out grounding integrity detection; s5, recording: recording voltage and current values of different grounding piles on the detection meter at the same time; and S6, calculating the resistivity. According to the soil resistivity detection method based on power transmission line grounding integrity detection, soil resistivity measurement and power transmission line grounding integrity detection are combined, and resistivity detection is ...

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27-08-2021 дата публикации

Contact for electrical connection and contact assembly

Номер: CN214068583U

The utility model relates to a contact for electric connection and a contact assembly. The contact assembly comprises a static contact and a moving contact, the moving contact comprises a plurality of contact pieces arranged in the circumferential direction, the plurality of contact pieces define a moving contact jack for the static contact to be inserted, the contact pieces are provided with contact finger protrusions protruding towards the inside of the moving contact jack, the static contact comprises a contact conductor, the front end of the contact conductor is an insertion end inserted into the moving contact jack, and the contact finger protrusions protrude towards the inside of the moving contact jack. Annular grooves are formed in the periphery, and at least two annular grooves can enable the static contact to adapt to different insertion depths. When the movable contact is plugged with the movable contact, the contact finger bulge of the movable contact can enter the annular groove ...

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30-05-2023 дата публикации

Circuit breaker

Номер: CN116190154A
Принадлежит:

The invention provides a circuit breaker which is used for solving the problems that an existing sulfur hexafluoride circuit breaker is complex in structure and low in safety. A circuit breaker comprises a cylindrical shell, one end of the shell is provided with an operating mechanism, sulfur hexafluoride gas is arranged in the shell, an arc extinguish chamber is arranged in the shell through a fixing seat, one end of the arc extinguish chamber is connected with a transmission mechanism, a transmission large shaft is rotatably arranged in the shell, one end of the transmission large shaft is rotatably connected with the interior of the shell, and the other end of the transmission large shaft is connected with the operating mechanism through a dynamic seal. A driving crank arm is arranged on the transmission large shaft and connected with the transmission mechanism, wiring terminals are arranged on the two sides of the shell, the wiring terminal on one side penetrates through the shell to ...

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25-07-2023 дата публикации

Big data network transmission performance diagnosis method

Номер: CN116489050A
Автор: YIN FEI, WANG HUAN
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The invention discloses a big data network transmission performance diagnosis method, which comprises the following steps: a data packet selection step: selecting a predetermined number of data packets from a database, backing up loose packets formed by the predetermined number of data packets, and binding the data packets formed by backup into a total packet; a memory obtaining step: calculating the memory amount of each data packet and the total packet, and calculating the memory amount of a loose packet according to the memory amount of each data packet; and a bale breaking uploading step: uploading all the data packets in the bale breaking to a big data cloud at the same time, calculating the starting time, the ending time and the response delay time of bale breaking transmission, and then calculating the transmission speed of the bale breaking according to the total memory of the bale breaking. According to the invention, the network transmission performance is calculated according ...

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04-04-2023 дата публикации

Coordinate rotation digital computer method and communication device

Номер: CN115904312A
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The invention discloses a CORDIC method and a communication device, and the method comprises the steps: calculating and storing a first parameter value lambda, determining a target rotation direction d theta according to an input first angle theta and the first parameter value lambda, and carrying out the iterative calculation through a CORDIC algorithm according to the target rotation direction d theta. Wherein the first parameter value lambda is determined by the sum theta < cp > of the rotation angles of multiple iterations and the input angle theta. In other words, all rotation directions can be predicted prior to iteration based on the calculated d [theta]. Through the CORDIC method, rotation iteration can be converted into at least three-stage iteration or multi-stage iteration from single-stage iteration. And the rotation direction of each iteration does not need to wait for the completion of the last iteration, so that the number of iterations can be reduced, and the calculation ...

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04-08-2023 дата публикации

High-frequency transformer winding structure and high-frequency transformer

Номер: CN116544005A
Автор: WANG WEI, LI WUPING, WANG HUAN
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The high-frequency transformer winding structure comprises an annular winding shell, a primary winding, a secondary winding, an insulating layer and U-shaped magnetic cores, the primary winding and the secondary winding are wound on the inner wall of the annular winding shell, the insulating layer is arranged in the annular winding shell, the two U-shaped magnetic cores are inserted into the annular winding shell, and a cooling pipe is wound on the outer wall of the annular winding shell. When the high-frequency transformer is heated, cooling liquid flows in the cooling pipes and is in contact with the annular winding shell through the cooling pipes, a large amount of heat is taken away, and the service life of the transformer is prolonged.

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14-07-2023 дата публикации

Supporting beam lower steel column bidirectional transfer beam mounting device and mounting method

Номер: CN116427727A
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The invention discloses a supporting beam lower steel column two-way transfer beam installation device and method, the supporting beam lower steel column two-way transfer beam installation method is implemented by applying the supporting beam lower steel column two-way transfer beam installation device, and the supporting beam lower steel column two-way transfer beam installation device comprises a first transfer beam and a second transfer beam. The first transfer beam is horizontally arranged. The second transfer beam is horizontally arranged below the first transfer beam, a first steel wire rope is connected between the end of the second transfer beam and the corresponding end of the first transfer beam, and at least one pair of lifting lugs is arranged at the bottom of the second transfer beam. According to the method, steel column installation is completed under the condition that the supporting beam is not dismantled and site construction is met, consumed time is short, cost is low ...

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