Concrete slump tester

The invention discloses a concrete slump tester which comprises a barrel and a bottom plate, wherein the barrel is in the shape of a horn which is small in top and large in bottom; openings are formed in the upper and lower end faces of the barrel; a locking component and a measuring rod are arranged on the bottom plate; the lower end face of the barrel is detachably connected with the locking component; the measuring rod is perpendicular to the bottom plate and penetrates out of the opening in the upper end face of the barrel; a marked slide block capable of sliding along the measuring rod is arranged on the measuring rod and can penetrate through the opening in the upper end face of the barrel. According to the concrete slump tester, the bottom plate is added for the barrel, so that trouble of searching a flat test place can be avoided; the barrel and the bottom plate are detachably connected by the locking component, so that the whole concrete slump testing operation can be completed ...

Internet of Things sensing data and spatial model matching method, device and equipment and medium

The invention discloses an Internet of Things sensing data and spatial model matching method and device, equipment and a medium. The method comprises the following steps: determining position code information of at least one piece of target Internet of Things sensing data and position code information of at least one piece of target space model data, wherein the position code information is expressed by adopting a Beidou grid position code; and code element consistency detection is carried out on code elements in the position code information of the target Internet of Things sensing data and code elements in the position code information of the target spatial model data, and a matching result between the target Internet of Things sensing data and the target spatial model data is determined according to a code element consistency result. According to the technical scheme, the target Internet of Things sensing data and the target spatial model data can be automatically matched under the condition ...

Pile structure of redox flow battery

The invention discloses a pile structure of a redox flow battery for storing energy through chemical reaction, which has the characteristic of improving the flowing uniformity of electrolyte. The pile structure of the redox flow battery comprises a battery stack formed by a plurality of single battery connected in series; each single battery comprises a positive pole sealing frame and a negative pole sealing frame; a collector plate which has a porous electrode and a conductive double electrode is arranged in the positive pole sealing frame; and flow field plates dividing the porous electrodeinto a plurality of flow guide areas are arranged in the porous electrode. The arranged flow field plates make the electrolyte flow in the porous electrode according to the flow guide areas separatedby the flow field plates, increase the area of an electrochemical reaction interface and the flow speed at which the electrolyte passes through the porous electrode, make the flow of the electrolyte in the ...

Paste resin with high thermostability and preparation method thereof

The invention discloses a method for preparing paste resin with high thermostability. The technical key point is that: a certain amount of buffer solution or thermal stabilizer, and a certain amount of vinyl chloride monomer, emulsifier, fatty alcohol, oil soluble compound initiating agent and pure water are added into a micro suspension polymerization system for polymerization, and the generated polymer latex is subjected to spray drying to form the polrvinyl chloride paste resin with high thermostability; or the buffer solution or thermal stabilizer is directly added into the polymerized latex which is forcibly recovered, and then the latex is uniformly stirred and subjected to spray drying to form the polrvinyl chloride paste resin with high thermostability. The paste resin has the characteristics of high thermo decomposing temperature, stable paste viscosity, small change with time and the like.

Method for extracting protodioscin from semen trigonellae

The invention provides a process for abstracting protodioscin from fenugreek, comprising: (1) pretreatment of the medicinal materials; (2) ultrasonic extraction; (3) process of extract; (4) purification: purifying and separating the extract by the process of macroporous adsorption resin and silica gel column chromatography. The technical features of the invention comprise: firstly, applying the macroporous adsorption resin technology to the preparation of the abstraction and purification of protodioscin, preparing high-purity protodioscin with a conventional method. The method has a simple process, the production cost is low, and product purity is high.

Preparation method of electrolyte for all-vanadium redox flow battery

The invention relates to a preparation method of electrolyte for an all-vanadium redox flow battery, which belongs to the field of the preparation of the electrolyte. The invention aims at solving the technical problem for providing a chemical preparation method of electrolyte for the all-vanadium redox flow battery. The preparation method comprises the following steps of a, mixing a mixture and sulfuric acid to be reacted for 10minutes to 40 minutes at the temperature of 75 to 95 DEG C to obtain a mixed liquid, wherein the mixture contains vanadium trioxide and vanadium pentoxide in a mass ratio of (2.5-4):1; b, adding deionized water into the mixed liquid to be reacted for 5 minutes to 20 minutes at the temperature of 75 to 95 DEG C, and filtering the mixed liquid, wherein the filtered liquid is the electrolyte for the vanadium battery. The preparation method is short in process flow, simple in equipment, short in consumption time, high in utilization rate of raw materials, low in cost ...

Method for preparing sodium vanadium phosphate from vanadium-containing minerals

The invention discloses a method for preparing sodium vanadium phosphate from vanadium-containing minerals, and belongs to the field of preparation of sodium ion battery materials.The method for preparing the sodium vanadium phosphate from the vanadium-containing minerals comprises the following steps that the vanadium-containing minerals and sodium salt are mixed and then subjected to oxygen-enriched roasting and water leaching, and leaching liquid containing sodium vanadate is obtained; then hydrolyzing, precipitating and filtering to obtain a hydrolyzed filter cake, and pulping, washing and drying the filter cake to obtain a red cake; the red cake is used as a vanadium source, a sodium source, a phosphorus source and a carbon source to be subjected to ball-milling mixing, a precursor is prepared, the precursor is calcined in an inert atmosphere, and the catalyst is prepared. According to the invention, an intermediate product (red cake) of vanadium pentoxide produced from industrial ...

Method for preparing electrolyte of all-vanadium redox flow batteries

The invention relates to a method for preparing electrolyte of all-vanadium redox flow batteries and belongs to the field of battery electrolyte. A technical problem solved by the invention is providing a method for preparing electrolyte of all-vanadium redox flow batteries, and aqueous migration can be avoided while preparing the electrolyte by the method. The method for preparing electrolyte ofall-vanadium redox flow batteries comprises the following steps: heating VOSO4 to 40-60 DEG C; then charging sulfur-free reducing gas to prepare the electrolyte of the all-vanadium redox flow batteries. The method helps solve the technical problem of great errors in precision and purity of the electrolyte due to the aqueous migration of a diaphragm in the conventional electrolysis process, simplify preparation process of the electrolyte of the vanadium redox batteries, shorten preparation time, improve work efficiency, adequately utilize all vanadium raw materials, avoid waste of 1/3 vanadiumin ...

Graphite felt watch surface modified method and modified mineral carbon felt

Paste resin with high thermostability and preparation method thereof

The invention discloses a method for preparing paste resin with high thermostability. The technical key point is that: a certain amount of buffer solution or thermal stabilizer, and a certain amount of vinyl chloride monomer, emulsifier, fatty alcohol, oil soluble compound initiating agent and pure water are added into a micro suspension polymerization system for polymerization, and the generatedpolymer latex is subjected to spray drying to form the polrvinyl chloride paste resin with high thermostability; or the buffer solution or thermal stabilizer is directly added into the polymerized latex which is forcibly recovered, and then the latex is uniformly stirred and subjected to spray drying to form the polrvinyl chloride paste resin with high thermostability. The paste resin has the characteristics of high thermo decomposing temperature, stable paste viscosity, small change with time and the like.

Hydroxyapatite hybridized nanometer crystal assembly, preparation method and application thereof

A hydroxyapatite hybridized nanometer crystal assembly is formed by assembling the nanometer crystals which contain hyaluronic acid and hydroxyapatite. The assembly is of a globular shape, with a grain size from 100 nanometers to 10 microns. The nanometer crystal has a shape of needle, silk or sheet, with a length of from 20nm to 800nm. A method for preparing the hydroxyapatite hybridized nanometer crystal assembly comprises the following steps of: (1) preparing a hyaluronic acid polysaccharide solution, (2) slowly scattering ions, and (3) collecting products and drying. The hydroxyapatite hybridized nanometer crystal assembly can be used as medical carrier, absorbent, filler, and the like.

Method for extracting pig blood antibiotic peptide

The invention discloses a method for extracting porcine blood antibacterial peptide, which comprises following steps: firstly, dissolving porcine blood powder in buffer solution, then, adding papain into mixture to carry out enzymatic hydrolysis, adjusting the pH value of enzymolysis liquid to be 3.5-4.5, secondly, adding chloroform and sodium bisulfite into the enzymolysis liquid to decolorize, and then adjusting the pH value of the sodium bisulfite which is decolorized to be 6.0-7.0 and to form crude extracts of the porcine blood antibacterial peptide. Aiming at obtaining finished goods of the porcine blood antibacterial peptide, following purification steps are carried out to the crude extracts: firstly, freezing and drying the crude extracts of the porcine blood antibacterial peptide,enabling the crude extracts to pass through a gel-type cation exchange column, eluting the exchange column, collecting eluent, and secondly, freezing and drying the eluent in vacuum to form porcine blood ...

Method for establishing fingerprint spectrum of gynostemma pentaphyllum serving as raw medicinal material of nine-ingredient blood replenishing oral liquid

The invention discloses a method for establishing a fingerprint spectrum of a raw medicinal material gynostemma pentaphylla of nine-ingredient blood-enriching oral liquid, and relates to the technical field of medicine quality analysis, and the key point of the technical scheme is that the method specifically comprises the following steps: S1, preparation of a test sample: precisely weighing 1g of a gynostemma pentaphylla medicinal material, and placing the gynostemma pentaphylla medicinal material in a conical flask with a plug; then precisely adding 20ml of 70% ethanol, weighing, heating and refluxing for 30 minutes, taking out, and cooling; and supplementing the lost weight with 70% ethanol, uniformly shaking, and filtering to obtain the traditional Chinese medicine composition. S2, specific chromatogram detection: sucking 10 microliters of the test solution prepared in the step S1, and injecting the test solution into a liquid chromatograph; the method comprises the following steps: ...

Combination electrode for all vanadium redox flow battery and preparation thereof

The invention relates to a composite electrode used in vanadium redox flow batteries and a preparation method thereof, pertaining to the vanadium battery manufacturing field. The composite electrode is prepared by adding three conductive fillers (conductive acetylene carbon black, conductive carbon fiber and graphite) into thermoplastic polymer to obtain a thermoplastic conductive plate which is compounded together with a graphite felt. Part of the conductive carbon fiber in the graphite felt is embedded into the surface of the conductive plate to form an interpenetrating conductive network and improve the conductivity of the whole product. Therefore, the composite electrode has excellent mechanical performance and conductivity (volume resistivity is less than or equal to 0.1omega question mark cm), integrates current collector and electrode into a whole, and effectively reduces surface resistance between the current collector and the electrode; meanwhile, during the process, no additional ...

Chaotic distance-testing method and device

The invention discloses a chaotic distance-testing method and a device, which can be used for testing and controlling an aircraft, and testing the distance of a moving target. Referring the figure 1 in the description: a chaotic signal is changed into a binary sequence through a quantizer 3 and is transmitted to an information channel after being modulated with a modulator 16 by means of carrier wave; and the front N (N is less than or equal to M) of M code chips are selected by a code-selecting pulse circuit 4 to be memorized in a shift register 8. A target 17 receives the signal and transmits a response signal to a receiver 10; and the response signal is sampled, is correlatively matched with filter wave, and judged through a threshold value judger 13, wherein the width of a distance-testing impulse (15) which is obtained when appearing a correlative peak value is the time of the signal which is transmitted between a test station and the target to and fro, and the width can be converted ...

Liquid level detection system

The utility model relates to a liquid level detection system, detect the photoelectric switch component, detect location separation blade and position sigual detecting element fixed bolster including liquid level detection system support, step motor and driver, capacitance method detection module, pressure sensor, data processing module, detection needle, position sigual, the position sigual detecting element fixed bolster hangs in liquid level detection system support upper end, and step motor and driver, capacitance method detection module, data processing module fix on the liquid level detection system support, position sigual detects the photoelectric switch component and fixes on the position sigual detecting element fixed bolster, and photoelectric switch power and signal line link to each other with data processing module for data processing module detects level signal, detection location separation blade plays the effect of control position sigual detection photoelectric switch ...

Establishment method of fingerprint spectrum of radix astragali seu hedysari of nine-ingredient blood replenishing oral liquid

The invention discloses a method for establishing a fingerprint spectrum of a raw medicinal material astragalus membranaceus of nine-ingredient blood-enriching oral liquid, and relates to the technical field of medicine quality analysis, and the key points of the technical scheme are as follows: S1: preparation of a test solution: taking 1.0 g of astragalus membranaceus medicinal material, putting into a conical flask with a plug, adding 10ml of 70% methanol into the conical flask with the plug, and weighing; heating and refluxing in a water bath for 30 minutes; taking out the conical flask with the plug and cooling; finally, supplementing the lost weight with 70% methanol, uniformly shaking, and filtering; s2, specific chromatogram detection: sucking 10 microliters of the test solution prepared in the step S1, and injecting the test solution into a liquid chromatograph; according to the method, octadecyl silica gel is taken as a filling agent, acetonitrile is taken as a mobile phase A, ...

Laser radar alarm system based on STM32 data acquisition control

The invention discloses a laser radar alarm system based on STM32 data acquisition control, which relates to the technical field of safety and comprises a laser radar module and a control module. The control module comprises a low-end processing unit and a high-end processing unit; the low-end processing unit obtains data in the laser radar module, obtains point cloud data, processes the point cloud data, removes the point cloud data formed by bulk fog, and obtains effective point cloud data; the high-end processing unit adopts an infrared sensing module to sense a heat source in the forward direction, after the movement track of the heat source is obtained, the movement of the heat source is predicted through a prediction unit, and the object contour is captured and displayed through a laser radar module. The distance and the contour of an object can be obtained; when the rainwater is heavy, the heat source can be sensed by using the infrared heat source, and the moving position of the ...

Method for preparing all-vanadium ionic liquid flow battery electrolyte and prepared electrolyte

The invention relates to a method for preparing an all-vanadium ionic liquid flow battery electrolyte and the prepared electrolyte, which belong to the field of battery electrolytes. The technical problem solved by the method is to provide a method which cannot produce crystals when the all-vanadium concentration of an electrolyte reaches 2mol/L in a battery and is used for preparing the all-vanadium ionic liquid flow battery electrolyte. The method for preparing the all-vanadium ionic liquid flow battery electrolyte comprises the steps of: taking a H2SO4 solution of VOSO4 as a cathode, taking a H2SO4 solution of Na2SO4 as an anode, and electrolyzing to obtain a trivalent vanadium electrolyte. The preparation of the electrolyte by the method cannot affect the service life of vanadium batteries; the method can avoid the waste of vanadium liquids of anodes, improve the utilization rate of vanadium, and reduce the production cost for the electrolyte; the electrolyte prepared by the method ...

Method and device for diagnosing network fault, storage medium and electronic equipment

The invention discloses a network fault diagnosis method and device, a storage medium and electronic equipment. The method comprises the following steps: an operator network management device obtains alarm information of a client network management device; determining a target alarm category to which the alarm information belongs, and obtaining a network operation state of the operator network management equipment; determining a network interruption scene corresponding to the client network management equipment according to at least one of the target alarm type and the network operation state; and determining a network fault reason and a processing measure according to the network interruption scene. The technical problems that the photoelectric transceiver does not have the network management capability, and a client does not open a monitoring platform for considering the information security, so that the fault cannot be processed in time after the network has the fault are solved.

Method for preparing electrolyte of all-vanadium redox flow batteries

The invention relates to a method for preparing electrolyte of all-vanadium redox flow batteries and belongs to the field of battery electrolyte. A technical problem solved by the invention is providing a method for preparing electrolyte of all-vanadium redox flow batteries, and aqueous migration can be avoided while preparing the electrolyte by the method. The method for preparing electrolyte ofall-vanadium redox flow batteries comprises the following steps: heating VOSO4 to 40-60 DEG C; then charging sulfur-free reducing gas to prepare the electrolyte of the all-vanadium redox flow batteries. The method helps solve the technical problem of great errors in precision and purity of the electrolyte due to the aqueous migration of a diaphragm in the conventional electrolysis process, simplify preparation process of the electrolyte of the vanadium redox batteries, shorten preparation time, improve work efficiency, adequately utilize all vanadium raw materials, avoid waste of 1/3 vanadiumin ...

Method for extracting pig blood antibiotic peptide

The invention discloses a method for extracting porcine blood antibacterial peptide, which comprises following steps: firstly, dissolving porcine blood powder in buffer solution, then, adding papain into mixture to carry out enzymatic hydrolysis, adjusting the pH value of enzymolysis liquid to be 3.5-4.5, secondly, adding chloroform and sodium bisulfite into the enzymolysis liquid to decolorize, and then adjusting the pH value of the sodium bisulfite which is decolorized to be 6.0-7.0 and to form crude extracts of the porcine blood antibacterial peptide. Aiming at obtaining finished goods of the porcine blood antibacterial peptide, following purification steps are carried out to the crude extracts: firstly, freezing and drying the crude extracts of the porcine blood antibacterial peptide, enabling the crude extracts to pass through a gel-type cation exchange column, eluting the exchange column, collecting eluent, and secondly, freezing and drying the eluent in vacuum to form porcine blood ...

Combination electrode for all vanadium redox flow battery and preparation thereof

The invention relates to a composite electrode used in vanadium redox flow batteries and a preparation method thereof, pertaining to the vanadium battery manufacturing field. The composite electrode is prepared by adding three conductive fillers (conductive acetylene carbon black, conductive carbon fiber and graphite) into thermoplastic polymer to obtain a thermoplastic conductive plate which is compounded together with a graphite felt. Part of the conductive carbon fiber in the graphite felt is embedded into the surface of the conductive plate to form an interpenetrating conductive network and improve the conductivity of the whole product. Therefore, the composite electrode has excellent mechanical performance and conductivity (volume resistivity is less than or equal to 0.1omega question mark cm), integrates current collector and electrode into a whole, and effectively reduces surface resistance between the current collector and the electrode; meanwhile, during the process, no additional ...

Chaotic distance-testing method and device

The invention discloses a chaotic distance-testing method and a device, which can be used for testing and controlling an aircraft, and testing the distance of a moving target. Referring the figure 1 in the description: a chaotic signal is changed into a binary sequence through a quantizer 3 and is transmitted to an information channel after being modulated with a modulator 16 by means of carrier wave; and the front N (N is less than or equal to M) of M code chips are selected by a code-selecting pulse circuit 4 to be memorized in a shift register 8. A target 17 receives the signal and transmits a response signal to a receiver 10; and the response signal is sampled, is correlatively matched with filter wave, and judged through a threshold value judger 13, wherein the width of a distance-testing impulse (15) which is obtained when appearing a correlative peak value is the time of the signal which is transmitted between a test station and the target to and fro, and the width can be converted ...

Initial failure detection method for cleaning machine of flexible manufacturing system

The invention discloses an initial failure detection method for a cleaning machine of a flexible manufacturing system. The initial failure detection method comprises the steps that an idle running test is conducted, wherein the cleaning machine which is detected to be qualified in performance and precision is directly installed in the flexible manufacturing system for the test, an electrical circuit and a hydraulic pipeline are well connected, and then detection is conducted after idle running is conducted for a while; then, prepared cutting fluid including part of cuttings and greasy dirt is injected into the cleaning machine in several times at intervals, workpiece cleaning in the working process of the cleaning machine is simulated, carrying and running tests are conducted, and detection is conducted. According to the initial failure detection method, failure stimulation can be conducted on the cleaning machine in a test mode to find the potential defects in the producing process or ...

Collector plate of vanadium redox battery and preparation method thereof

The invention discloses a collector plate of a vanadium redox battery and a preparation method thereof, and the collector plate of the vanadium redox battery has the characteristic of improving the charging and discharging performances; the collector plate of the vanadium redox battery comprises an electricity-conduction plastic body which is formed by distributing a plurality of electricity-conduction plastic strips at interval, a flow field plate is arranged between the two adjacent electricity-conduction plastic strips, and the height of the electricity-conduction plastic strips and the height of the flow field plate are unequal to form an electrolyte solution groove; the preparation method is that: a. electricity-conduction fillers are added in a thermoplasticity polymer to obtain thermoplasticity electricity-conduction plastic strips; b. the electricity-conduction plastic strips are arranged and fixed at interval; c. epoxide resin or phenolic resin for forming the flow field plate ...

Graphite felt surface modified method and modified graphite felt

Detecting method for early failure of logistics trolley of flexible manufacturing system

The invention discloses a detecting method for early failure of a logistics trolley of a flexible manufacturing system. The detecting method comprises the following steps: (1) feeding speed test step: if defects do not exist through diagnosis in the step (1), conducting next step; (2) loading running test step: if defects do not exist through diagnosis in the step (2), conducting next step continuously; (3) treatment after tests: (1) unloading a saddle weight; hoisting the saddle weight to a depository; (2) cleaning and maintaining the logistics trolley. The detecting method conducts early failure motivation on the importance functional unit of flexible manufacture system logistics system logistics trolley in a test manner, finds potential defects in producing and manufacturing process or design, provides a practical method to improve the reliability of a complete machine of a machine tool, greatly reduces early failure probability of machine tools, provides a reference base for diagnosing ...

Pile structure of redox flow battery

The invention discloses a pile structure of a redox flow battery for storing energy through chemical reaction, which has the characteristic of improving the flowing uniformity of electrolyte. The pile structure of the redox flow battery comprises a battery stack formed by a plurality of single battery connected in series; each single battery comprises a positive pole sealing frame and a negative pole sealing frame; a collector plate which has a porous electrode and a conductive double electrode is arranged in the positive pole sealing frame; and flow field plates dividing the porous electrode into a plurality of flow guide areas are arranged in the porous electrode. The arranged flow field plates make the electrolyte flow in the porous electrode according to the flow guide areas separated by the flow field plates, increase the area of an electrochemical reaction interface and the flow speed at which the electrolyte passes through the porous electrode, make the flow of the electrolyte in ...

Flavone-metal complex microsphere and preparation method and application thereof

The invention relates to a flavone-metal complex microsphere which is in a spherical shape and in the structure of a solid sphere or a hollow sphere or a porous sphere, and the particle size of the sphere is 50nm-5000nm. The flavone-metal complex microsphere is formed by complexing flavonoid substances such as flavanol, anthocyanidin, tea polyphenol and the like with metal, and the preparation process comprises the following sequential steps: (1) preparing a flavone solution, (2) reacting and synthesizing, and (3) collecting and drying the product. In the reaction for synthesis, glycerin or glycol is used as an assistant, and the reaction temperature is 60 DEG C-70 DEG C for obtaining the solid microsphere. In the reaction for synthesis, ethyl acetate or vinyl alcohol is used as an assistant, and the reaction temperature is 90 DEG C-150 DEG C for obtaining the hollow microsphere. In the reaction for synthesis, ethanol is used as an assistant, and the reaction temperature is 70 DEG C-90 ...

Liquid stream battery stack

The invention provides a flow cell stack, comprising two endplates, a diaphragm, and two bipolar plates, the flow cell stack is separated into an anode electrolyte area and a cathode electrolyte areathrough the diaphragm between the two endplates, each area is provided with a bipolar plate which has the same polarity with the electrolyte of the corresponding area and the same polarity at both sides; two poles of the same bipolar plate are connected in parallel; an inlet of each bipolar plate is arranged at the same position below the bipolar plate, and an outlet of each bipolar plate is arranged at the same position above the bipolar plate. The flow cell stack is simple in structure, can reduce the requirement on the performance of the material of the bipolar plate effectively, particularly the requirement on the compactness of the bipolar plate so as to reduce the production cost effectively; meanwhile, the flow cell stack can effectively decrease the self-discharging and reduction of ...

Liquid stream battery stack

The invention provides a flow cell stack, comprising two endplates, a diaphragm, and two bipolar plates, the flow cell stack is separated into an anode electrolyte area and a cathode electrolyte area through the diaphragm between the two endplates, each area is provided with a bipolar plate which has the same polarity with the electrolyte of the corresponding area and the same polarity at both sides; two poles of the same bipolar plate are connected in parallel; an inlet of each bipolar plate is arranged at the same position below the bipolar plate, and an outlet of each bipolar plate is arranged at the same position above the bipolar plate. The flow cell stack is simple in structure, can reduce the requirement on the performance of the material of the bipolar plate effectively, particularly the requirement on the compactness of the bipolar plate so as to reduce the production cost effectively; meanwhile, the flow cell stack can effectively decrease the self-discharging and reduction of ...