Carbon fiber hard felt surface coating and preparation process thereof

The invention discloses a carbon fiber hard felt surface coating and a preparation process thereof. The resin, the graphite powder, the silicon carbide powder, the carbon fiber powder and the silicon dioxide powder are used as raw materials and can be uniformly coated on the surface of the carbon/carbon composite material to form a good dispersion form, so that the binding force of the coating and a matrix is increased, and the coating is prevented from falling off in a high-temperature environment. The invention also provides a preparation method of the composition. Compared with the prior art, the carbon fiber hard felt surface coating prepared by the invention has the properties of high temperature resistance, oxidation resistance, silicon vapor corrosion resistance, corrosion resistance and the like.

Thousand-document market detection method and device, electronic equipment and storage medium

The invention discloses a thousand-grade market detection method and device, electronic equipment and a storage medium, and the method comprises the steps: receiving data from to-be-detected target market equipment, and obtaining first market data; performing protocol analysis on the first market information data to obtain second market information data; performing data filtering on the second market information data according to a filtering rule to obtain third market information data; wherein the filtering rule at least comprises a stock code and a timestamp; verifying the third market data according to a verification rule to obtain a verification result; and determining the correctness of the to-be-detected target market according to the verification result. Through the mode, different market information data can be observed in real time according to the requirements of customers, the market information data can be efficiently and conveniently processed, and the correctness of the market ...

Hot door and polycrystalline ingot furnace

Automatic file classification system

The present invention relates to an automatic file classification system, which belongs to the field of data mining. The automatic file classification system provided by the invention comprises an input module, an information extraction module, a text preprocessing module, an image preprocessing module, a video preprocessing module, an audio preprocessing module, a text classification module, an image classification module, a video classification module, an audio classification module, a fusion module and an output module. In the system, text information, image information, video information and audio information in a file are extracted through the information extraction module, preprocessed by the text preprocessing module, the image preprocessing module, the video preprocessing module and the audio preprocessing module respectively and classified by the text classification module, the image classification module, the video classification module and the audio classification module respectively ...

Remote real-time monitoring system for soil runoff

The invention discloses a remote real-time monitoring system for soil runoff, belonging to the field of agricultural science. The system comprises a manual simulation rainfall device, a test stand device and a test device, wherein the manual simulation rainfall device comprises a water tank, a safety valve, a constant-pressure pump, a one-way valve, an electromagnetic valve, a flowmeter, a lifting rack and a spray nozzle; the test stand device comprises a table-type test stand, a soil bearing device, a guide hopper, a water container and a filter screen; and the test device comprises a test system and the like. The system disclosed by the invention can conveniently perform monitoring on the rainfall runoff process as well as research on the water erosion mechanism under different gradients, different earth surface conditions and different soil underlying surface conditions, and can realize remote online monitoring on the dynamic phenomenon of soil runoff.

ANALYSIS METHOD AND DEVICE FOR SCIENTIFIC RESEARCH INFORMATION EVOLUTION

A method and device for analyzing evolution of scientific research information are provided, wherein the method comprises the steps of: collecting two or more scientific articles in a preset field via a collection unit; allowing the scientific articles to be preprocessed via a preprocessing unit and constructing an author theme evolution model of two or more scientific articles; and setting scientific research information estimation parameters via an acquisition unit and utilizing an evolution calculation formula to calculate the scientific research estimation parameters, thereby acquiring a scientific research information evolution result. In an embodiment of the present invention, the scientific articles in the preset field are collected and allowed to be preprocessed, the author theme evolution model of the scientific articles is built, and the scientific research information evolution result is obtained by using the evolution calculation formula. The scientific research information ...

Fracturing equipment instrument detection device

The utility model provides a fracturing equipment instrument detection device, including power supply and respectively with fracturing equipment instrument, cable adapter, analog signal collection module, high speed controller, the input output device of power supply electric connection, analog signal collection module passes through fracturing equipment instrument was gathered to the cable adapter current signal or voltage signal to the current signal or the voltage signal that will gather transmit for high speed controller analysis and detection, and the testing result is transmitted and is preserved for input output device. The utility model provides a fracturing equipment instrument detection device is convenient for detect at the construction field (site) and the check -up, reduces work load and improves work efficiency, can effectively improve the on -the -spot instrument and meter system of fracturing job stabilization nature and accuracy, improves the fracturing quality. Simultaneously ...

Rotational claw poked and pressed no-tillage anti-blockage device

Guide wheel outline acquisition device

The invention discloses a guide wheel outline acquisition device, which comprises a horizontal support, a magnetic V-shaped frame which is fixed with the wheel shaft at the two ends of a guide wheel and arranged at the two ends of the horizontal support, a vertical support arranged on the horizontal support through an adjustable connecting device, and an industrial camera which can be arranged on the vertical support in a sliding manner. The guide wheel outline acquisition device provided by the invention detects the outline of the guide wheel by means of visual detection and adopts a high-resolution industrial camera to take a photo of the surface of the guide wheel. In the invention, the device can be fixed on the wheel shaft at the two ends of the guide wheel by the magnetic V-shaped frame to directly detect the guide wheel on an extracting machine and a slicing machine without taking the guide wheel out, so the unnecessary loss caused by loss is reduced greatly. In addition, the adjustable ...

Management and control for cutflanking left(right) turing type intersection

The present invention relates to a corssing arragement and traffic control method by adopting left-turning mode of motor vehicles and centralized passing through mode for non-motorized vehicles and pedestrains. Said invention is applicable to grade-crossing and underpass traffic management and control so as to effectively raise traffic capacity of crossing and intersection and shorten waiting time.

Chinese descriptor list building system

The invention provides a Chinese descriptor list building system, which comprises input equipment, a system processor, a memory and output equipment, wherein the system processor comprises a data processor, a descriptor reorganization and extraction device, a descriptor relationship reorganization and extraction device, a descriptor list generator; the memory is communicated and connected with the data processor, the descriptor reorganization and extraction device, the descriptor relationship reorganization and extraction device and the descriptor list generator of the system processor; and the output equipment is communicated and connected with the system processor. Therefore the defects of the original manual method are overcome; the labor and the materials are saved; the Chinese descriptor list building efficiency is improved; the dynamic building, updating and maintenance of the Chinese descriptor list can be conveniently and fast realized at low cost; the descriptor list building quality ...

Innoxious negative ion aqueous polyurethane and preparation method thereof

The invention discloses a preparation method of innoxious negative ion aqueous polyurethane, and aqueous polyurethane prepared by the method. The method comprises the following steps: mixing dicyclohexyl methane diisocyanate and aliphatic diol according to a mol ratio of 2.5 to 4; carrying out reaction for 3 to 5 hours at 70 to 90 DEG C to obtain performed polymers; adding dimethylolbutyric acid with hydrophilic groups for taking the reaction for 3 to 5 hours; adding KOH water solution for emulsifying dispersion; and dripping diamine chain extenders for extending chains to obtain aqueous polyurethane latex emulsion. The invention adopts the aliphatic diisocyanate dicyclohexyl methane diisocyanate resin and the aliphatic polymeric diol, does not contain organic solvents such as NMP, acetone and the like often used for preparing the aqueous polyurethane, and does not contain common use neutralizing agents such as triethylamine and the like. The completely innoxious polyurethane materialcan ...

Nozzle for production of silicon chip and silicon chip production system

The invention provides a nozzle for the production of a silicon chip. The nozzle comprises a nozzle cavity, a first baffle plate, a second baffle plate, a nozzle orifice and a fixed sheet, wherein the nozzle cavity is used for delivering mortar; the first baffle plate and the second baffle plate are arranged on the outer surface of the nozzle cavity; the nozzle orifice is arranged between the first baffle plate and the second baffle plate and is used for ejecting the mortar out; and the fixed sheet is arranged at one end of the nozzle cavity and is used for being fixed with an NTC442DM filleting machine. By utilizing the nozzle provided by the invention, the mortar can be prevented effectively from damaging the stability of a sand shade, and the quality of the silicon chip is improved. The invention also provides a silicon chip production system.

Automatic file classification system

The invention relates to an automatic file classification system, which belongs to the field of data mining. The automatic file classification system provided by the invention comprises an input module, an information extraction module, a text preprocessing module, an image preprocessing module, a video preprocessing module, an audio preprocessing module, a text classification module, an image classification module, a video classification module, an audio classification module, a fusion module and an output module. In the system, text information, image information, video information and audio information in a file are extracted through the information extraction module, preprocessed by the text preprocessing module, the image preprocessing module, the video preprocessing module and the audio preprocessing module respectively and classified by the text classification module, the image classification module, the video classification module and the audio classification module respectively ...

Thermal field structure of single crystal furnace

The embodiment of the invention discloses a thermal field structure of a single crystal furnace. The thickness of an insulating layer on the upper part of the side wall of the single crystal furnace is 60-200 mm; and the thickness of an insulating layer on the furnace bottom of the single crystal furnace is 100-400 mm. Compared with the thermal field structure of the single crystal furnace in the prior art, the thermal field structure of the single crystal furnace provided by the embodiment can reduce the heat loss in the single crystal pulling process by increasing the thickness of the insulating layers on the side wall and the furnace bottom so that the energy consumption can be reduced; and moreover, in the scheme, the thermal shielding with high cost does not need to be changed, and the power of the single crystal furnace can be reduced by 5-20% on the premise of guaranteeing the crystal quality and the production efficiency, thus the single crystal pulling cost can be effectively reduced ...

Unconventional CO2 fracturing site operation technology

The invention provides an unconventional CO2 fracturing site operation technology. The technology comprises the steps of (1) preparation of a fracturing truck; (2) the connection between a CO2 booster pump truck and a CO2 storage tank and a main fracturing truck; (3) the connection of high pressure lines; (4) pressure testing; (5) high pressure line sweeping; (6) circulatory pump cooling; (7) CO2 fracturing; (8) pressure release. By means of the technology, the risk of dry icing can be eliminated, the expansion explosion risk is eliminated, and the unconventional CO2 fracturing can be completed safely.

Automatic document classifying method

The invention relates to an automatic document classifying method which belongs to the filed of data mining and is applicable to automatic resource classification, network content monitoring, spam filtration, digital libraries and the like. The method comprises the following steps of: firstly extracting the text information, the image information, the video information and the audio information in a document, then classifying the four kinds of information with different classifying methods, next gathering the classification results of the four kinds of information, and carrying out comprehensive treatment by adopting a decision-level fusion algorithm to obtain a final classification result. The invention can obtain a document classification result with higher accuracy.

Combined double-horn overpass

In the combined double-horn overpass, the up line and the down line in the minor direction are separated from each other and cross over the main line in the major direction from the upper and lower side separately, and two horn-like roads are used to perform left and right turn. The present invention has the main features of compact structure, less occupied area, low building cost, no cross between the routes in various directions. The combined double-horn overpass has higher traffic capacity and vehicle speed than cloverleaf overpass.

Regional ecological product analysis method and device, electronic equipment and storage medium

The invention provides a regional ecological product analysis method and device, electronic equipment and a storage medium, and belongs to the technical field of computers, and the method comprises the steps: obtaining a plurality of ecological product index factors and a plurality of economic development index factors of a target region; inputting the plurality of ecological product index factors into an ecological product supply evaluation model to obtain an ecological product supply evaluation index, and inputting the plurality of economic development index factors into an economic development level evaluation model to obtain an economic development level evaluation index; and inputting the ecological product supply evaluation index and the economic development level evaluation index into a coupling analysis model to obtain a coupling state analysis result. By inputting the ecological product supply evaluation index and the economic development level evaluation index into the coupling ...

Malicious software detection method

The invention discloses a malicious software detection method, and belongs to the technical field of software. The malicious software detection method comprises the following steps: designing a monitor based on a user-level code; setting a sensitive API interface library; a target program is loaded, and the monitor monitors the target program to call the API interface; when the target program calls the API recorded in the sensitive API library, the monitor pauses the target program, whether the target program is allowed to call the API or not is judged by an engineer according to the situation that the target program calls the API recorded in the sensitive API library, if the engineer allows to call the API, the target program continues to run, and if the engineer allows to call the API, the target program continues to run. And if the engineer does not allow to call the API interface, terminating the target program. According to the invention, the monitor is arranged based on the user-level ...

Sub-graph segmentation method and device, electronic equipment and computer readable storage medium

The embodiment of the invention provides a sub-image segmentation method and device, electronic equipment and a computer readable storage medium, and relates to the field of image processing, the method comprises the steps that an illustration and a text corresponding to the illustration are determined, the illustration comprises a plurality of sub-illustrations, and the text comprises respective question notations of the plurality of sub-illustrations; inputting the illustration into a segmentation model, obtaining the position of each sub illustration in the illustration output by the segmentation model, inputting the illustration into a screening model, and obtaining the position of each sub illustration serial number output by the screening model; determining a sub-illustration sequence number corresponding to each sub-illustration according to the position of each sub-illustration and the position of each sub-illustration sequence number; determining the relationship between the question ...

Innoxious negative ion aqueous polyurethane and preparation method thereof

The invention discloses a preparation method of innoxious negative ion aqueous polyurethane, and aqueous polyurethane prepared by the method. The method comprises the following steps: mixing dicyclohexyl methane diisocyanate and aliphatic diol according to a mol ratio of 2.5 to 4; carrying out reaction for 3 to 5 hours at 70 to 90 DEG C to obtain performed polymers; adding dimethylolbutyric acid with hydrophilic groups for taking the reaction for 3 to 5 hours; adding KOH water solution for emulsifying dispersion; and dripping diamine chain extenders for extending chains to obtain aqueous polyurethane latex emulsion. The invention adopts the aliphatic diisocyanate dicyclohexyl methane diisocyanate resin and the aliphatic polymeric diol, does not contain organic solvents such as NMP, acetone and the like often used for preparing the aqueous polyurethane, and does not contain common use neutralizing agents such as triethylamine and the like. The completely innoxious polyurethane material can ...

Guide wheel outline detection method and system

The embodiment of the invention discloses a guide wheel outline detection method and system. The method comprises: taking a photo of the surface of a guide wheel by using an industrial camera to obtain the image of the outline of the guide wheel; and according to the image of the outline of the guide wheel, calculating the characteristic data of the V-shaped groove of the guide wheel, wherein thecharacteristic data of the V-shaped groove comprise groove included angle, groove height and groove space. In the embodiment of the invention, the outline of the guide wheel is detected by means of visual detection and the high-resolution industrial camera is used to take the photo of the surface of the guide wheel, so the actual conditions of the V-shaped groove on the surface of the guide wheelcan be obtained accurately; according to the image of the outline of the guide wheel, which is obtained by taking the photo, the characteristic data of the V-shaped groove can be obtained; and thus, the ...

Cabin door control mechanism for full-aircraft wind tunnel experiment

The invention provides a cabin door control mechanism for a full-aircraft wind tunnel experiment. A cabin door is rotatably hinged to a body of an aircraft model through a rotating shaft, wherein the control mechanism is provided with a control shaft fixedly connected with the rotating shaft of the cabin door and an electric motor for driving the control shaft to rotate; at least one reducing gear is arranged between the electric motor and the control shaft. According to the cabin door control mechanism for the full-aircraft wind tunnel experiment disclosed by the invention, the provided cabin door control mechanism for the full-aircraft wind tunnel experiment is capable of controlling the opening and closing of the cabin door.

Electric network pollution data ring-type collection system based on PQDIF standard

The invention relates to the electric network pollution data collection technology, in particular to an electric network pollution data ring-type collection system based on a PQDIF standard. The electric network pollution data ring-type collection system based on the PQDIF standard solves the problems that an existing electric network pollution data collection system is poor in data collection real-time performance, poor in data transmission stability, low in data transmission speed and poor in data sharing performance. The electric network pollution data ring-type collection system based on the PQDIF standard comprises power quality monitors, carbon footprint power monitors, a monitoring master station, a database server, client sides, exchanges, gateways and optical fibers, wherein each power quality monitor is in end-to-end connection with the first exchange through the optical fibers to form a ring topological structure, each carbon footprint power monitor is in end-to-end connection ...

X-shap orientation type grade separation bridge

Method for extracting vibration acceleration signal characteristics of measurement points on surfaces of power transformers

The invention discloses a method for extracting vibration acceleration signal characteristics of measurement points on the surfaces of power transformers. The method includes acquiring vibration signals of the measurement points on the surfaces of the power transformers by the aid of vibration acceleration sensors; analyzing frequency spectra to obtain vibration acceleration frequency spectra of the measurement points on the surfaces of the transformers; computing and solving frequency-pass vibration values of adjacent frequency bands of characteristic frequency points; computing characteristic vectors of the vibration signals of the surfaces of the power transformers by the aid of the solved frequency-pass vibration values. The method has the advantages that the characteristic vectors of the vibration signals of the measurement points on the surfaces of the power transformers are solved by the aid of the frequency-pass vibration values of the adjacent frequency bands of the various characteristic ...

Fireproof and antiknock plugging structure for converter station

A fire-proof and explosion-proof plugging structure for a converter station comprises a fire-proof assembly and an explosion-proof energy absorption assembly which are connected in series. The fireproof assembly and the anti-deflagration energy-absorbing assembly are internally provided with through holes for cables to pass through. The fireproof assembly comprises an outer groove chamber between the cable through pipe and the outer sleeve, and a fire extinguishing agent placed in the outer groove chamber; the anti-deflagration energy absorption assembly comprises a cable box connected with the fireproof assembly and an energy absorption device fixed in the cable box. According to the invention, a fire extinguishing effect on the interior of the cable through hole is realized through the fireproof assembly, fire spreading is avoided, and the fireproof performance is further enhanced; impact force is buffered through the anti-deflagration energy absorption assembly, instant impact of deflagration ...

Scientific research information evolution analyzing method and device

Provided is a scientific research information evolution analyzing method and device. The method includes that a collection unit is used for collecting more than two scientific research documents in a preset field; a preprocessing unit is used for preprocessing the scientific research documents and constructing an author theme evolution model of more than two scientific research documents; an acquisition unit is used for setting scientific research information estimation parameters and utilizing an evolution operation formula to operate the scientific research estimation parameters to acquire a scientific research information evolution result. In the embodiment, the scientific research documents in the preset field are collected and preprocessed, the author theme evolution model of the scientific research documents is built, the scientific research information evolution result is obtained by using the evolution operation formula, discloses themes of the scientific research documents and ...

Hot door and polycrystalline ingot furnace

The embodiment of the invention aims to provide a hot door with a flexible opening degree and a polycrystalline ingot furnace. A structure of the hot door comprises a first frame, a plurality of strip thermal baffles, a link mechanism, a second frame and a horizontal pull rod, wherein the first frame is connected with the strip thermal baffles through shafts; the strip thermal baffles can rotate around the shafts and are connected with the second frame through the link mechanism; and the horizontal pull rod is arranged on the second frame. Therefore, in the embodiment of the invention, the link mechanism can be driven to move by pulling the horizontal pull rod to horizontally move, thereby driving the strip thermal baffles to rotate. When the strip thermal baffles rotate to different angles, the corresponding opening degrees of the whole hot door are different accordingly, thus realizing flexible control of the opening degree.