31results about How to "Meet development needs" patented technology

This invention belongs to the technical field of energy storage systems. To further improve the efficiency and peak-shaving flexibility of energy storage systems, a liquefied air energy storage system coupling hydrate cooling, air separation, and liquefied natural gas is proposed. In the energy storage phase, the liquefied air energy storage system compresses and heats air. After expanding to atmospheric pressure, the liquefied air enters a gas-liquid separator. The separated gaseous air serves as return air to provide cooling energy, while the separated liquid air is stored in a liquefied air tank. The cooling energy for air cooling is provided by the return air, liquefied natural gas, and circulating hydrates. In the energy release phase, a portion of the liquid air in the liquefied air tank is pressurized and enters a distillation unit for air separation, producing liquid nitrogen and liquid oxygen. The remaining liquid air is used for power generation. The heating fluid is provided by circulating hydrates. This invention improves the system's economic efficiency and overall energy utilization efficiency.

The present application relates to the field of gas turbine, in particular to a gas turbine combustion chamber gas-liquid dual fuel mixed combustion test system and working method thereof, comprising: a combustion cavity unit, a combustion state monitoring unit, a liquid fuel supply unit, a gas fuel supply unit, a main air supply unit and a central control unit; the combustion cavity unit comprises a test shell, a flame tube, a dual fuel nozzle and an igniter, the flame tube is installed in the inner cavity of the test shell and is fixed by the head and tail support. The present application sets up a test system by setting a dual fuel nozzle and a flame tube in a unique test shell, and configuring an igniter, a pressure pulsation sensor and other structures, combined with a central control computer to ensure that the combustion chamber outlet temperature remains unchanged, through precise control of the gas fuel and liquid fuel flow, the dual fuel mixed combustion characteristic curve under each working condition is automatically obtained.

A micro-arc oxidation treatment method for a magnesium alloy containing an LPSO phase, which adopts an electrolyte system mixed with three kinds of salts, i.e., a metallate, a silicate and a phosphate, and combines two-step micro-arc oxidation treatment to control the generation of ceramic phases in the oxide film layer structure and embed a large number of exposed LPSO phases in the micro-arc oxidation film, so that the obtained micro-arc oxidation film has small porosity and pore size, a smooth surface and no micro-cracks, the porosity is less than or equal to 9%, the micro-arc oxidation film has a pore size of 140-1100 nm and an average pore size of less than or equal to 1 micrometer, and the corrosion resistance of the magnesium alloy is significantly improved, the self-corrosion current density of the magnesium alloy is reduced by three orders of magnitude compared with that before the micro-arc oxidation treatment, the self-corrosion current density is less than or equal to 3.588*10 ‑8 A cm ‑2 , and the corrosion resistance efficiency is greater than or equal to 1208%.

The present application provides a polymorph of GLP-1R agonist compound I and a preparation method and use thereof. Compared with the amorphous substance of compound I, the polymorph of the present application has higher stability and better processability, and is more suitable for preparing a drug for preventing or treating diseases related to GLP-1R target and its signal pathway, such as type 2 diabetes, prediabetes, obesity, non-alcoholic fatty liver disease, non-alcoholic steatohepatitis, kidney disease, gout, hyperuricemia and cardiovascular disease.

A method for in-situ generation of FeOx / MnOx from groundwater based on PRB for the degradation of organohalogenated pollutants, relating to the fields of groundwater remediation and advanced oxidation technologies. The purpose of this invention is to address the problems of high energy consumption, low efficiency, and cumbersome processes in existing short-chain chlorinated paraffin groundwater remediation technologies. Method: A mixture of prepared simulated groundwater and an oxidant is pumped into a PRB simulation column to degrade short-chain chlorinated paraffins; the concentration of short-chain chlorinated paraffins in the PRB simulation column is monitored, and the degradation efficiency is maintained at 90-100%. This invention provides a method for in-situ generation of FeOx / MnOx from groundwater based on PRB for the degradation of organohalogenated pollutants.

The invention discloses a full-process continuous full-automatic shrimp peeling machine, and relates to the technical field of aquatic product processing equipment.The full-process continuous full-automatic shrimp peeling machine comprises a rack, and the rack is sequentially provided with an automatic feeding module, a directional sliding way, a head removing module, a tail removing module, a back opening and line removing module and a roller shaft type shelling module in the shrimp body processing time sequence; a first collecting frame and a second collecting frame are further arranged on the rack; according to the automatic shrimp peeling machine, manual shrimp peeling operation can be replaced, full-process automatic shrimp peeling is achieved, the processing efficiency is greatly improved, the labor cost is reduced, meanwhile, all parts making contact with shrimp bodies are made of food-grade materials, the sanitary consistency of products can be effectively guaranteed, the shrimp meat loss rate is reduced, and the development requirements of the large-scale and standardized aquatic product processing industry are met.

The application discloses a tunnel fire-fighting water-electric heat tracing heating optimization method, system, device and medium, and relates to the technical field of tunnel fire-fighting. The method comprises the following steps: acquiring associated data of tunnel fire-fighting; the associated data comprises water use time, a physical network, an environmental temperature and a pipe-in-water temperature; a time-environmental temperature-pipe-in-water temperature network model is constructed according to the associated data; the nodes in the time-environmental temperature-pipe-in-water temperature network model are determined by discretizing the water use time; a target function is constructed based on the time-environmental temperature-pipe-in-water temperature network model; an electric heat tracing heating optimization model is constructed according to the target function and conditional constraints, and the heating time is controlled by using the electric heat tracing heating optimization model. The application can realize efficient utilization of electric energy, play a role in energy saving and emission reduction, and meet the needs of the development of tunnel fire-fighting water-electric heat tracing heating technology in future highland and cold environment.

This invention discloses a method for targeted activation of endogenous enzymes and debittering / fragrance enhancement in flaxseed while maintaining its granular shape. The method includes the following steps: microcrack treatment of flaxseed; spraying an ethanol-water solution onto the surface of the flaxseed to create a slightly moist state; heating and conditioning in a heat-preserving conditioning device to activate the endogenous cyanogenic glycoside hydrolytic enzyme system; short-term heat treatment under closed or semi-closed negative pressure conditions and introducing cyanide-containing exhaust gas into an exhaust gas treatment system; and cooling and tempering to obtain debittered and fragrance-enhanced flaxseed. This invention, through the synergistic effect of microcrack treatment and ethanol-water wetting, effectively activates endogenous enzymes to promote cyanogenic glycoside hydrolysis and removal of volatile cyanide-containing components under extremely low wetting solution addition conditions, while simultaneously inhibiting the hydration and swelling of seed coat mucilage. This results in treated flaxseed maintaining a dispersed granular state and good flowability, suitable for subsequent continuous pressing processing.

The invention relates to the technical field of catalysis, and discloses application of a Cu-ZSM-22 catalyst in preparation of aviation kerosene components through hydrodeoxygenation coupling isomerization of methyl palmitate, and the application comprises the following steps: 1) carrying out reduction treatment on the Cu-ZSM-22 catalyst; 2) filling a reactor with the Cu-ZSM-22 catalyst, mixing methyl palmitate and a solvent, introducing hydrogen, and carrying out hydrodeoxygenation and hydroisomerization reaction to obtain a product containing hexadecane and an isocompound thereof; according to the Cu-ZSM-22 catalyst, a ZSM-22 molecular sieve is used as a carrier, and a copper species is used as an active component. The catalyst is used for preparing aviation kerosene components through methyl palmitate hydrodeoxygenation coupling isomerization, has the advantages of being low in cost, high in methyl palmitate conversion rate, high in long-chain alkane selectivity, high in product isomerization ratio and the like, and can effectively improve the low-temperature fluidity of the aviation kerosene components.

The utility model provides a kind of planetary reducer for sweeper, including reducer body, disc brush, reducer body includes main casing, the center of main casing is rotatably provided with planet carrier, lock brush jack is opened on the lower end surface of planet carrier, a plurality of lock brush side holes are opened on the hole wall of lock brush jack, disc brush includes brush disc, bristle, the center of brush disc is opened with the central hole of lock brush jack alignment, central hole is equipped with lock brush ware, lock brush ware includes protective shell, after protective shell passes through central hole and is inserted with lock brush jack, the lower part of the outer side wall of protective shell is equipped with and brush disc bottom surface is resisted lower shell plate, lock brush guide hole is opened on the side wall of protective shell, lock brush slide buckle is slidably arranged in lock brush guide hole, push or pull lock brush slide buckle and make reciprocating linear motion along lock brush guide hole in the dynamic buckle assembly of protective shell. The planetary reducer for sweeper is coaxially connected with disc brush and planet carrier by lock brush ware, reduce the axial assembly volume between disc brush and planet carrier.

A flow calculation and calibration method of a non-pressure-difference constant jet water supply system, the non-pressure-difference constant jet water supply system comprising: a water pump, a metering valve connected at the outlet of the water pump, and a nozzle installed at the outlet of the metering valve. Since there is no pressure difference maintaining mechanism, the water supply volume is related to the position of the metering valve and also related to the pressure difference before and after the metering valve. The flow control needs to consider two dimensions of the valve pressure difference and the valve displacement, and the flow control and calibration work is extremely tedious. A simplified flow calibration method is established, including: starting the water pump; selecting multiple points as metering valve position expected values within the full range of the metering valve, and controlling the nozzle based on the selected multiple metering valve position expected values by the controller; measuring the metering valve inlet and outlet pressure difference and the metering valve water flow corresponding to each metering valve position expected value respectively; converting the metering valve water flow into the water flow under the standard pressure difference, and obtaining the corresponding relationship between the metering valve position expected value and the water flow under the standard pressure difference and establishing a calibration line.

The invention discloses an inorganic plastic oxygen composite material and application thereof in a green agriculture and plant maintenance system. The inorganic plastic oxygen composite material is prepared from the following components: an inorganic internal peroxide bridge composite compound, an inorganic mediated catalytic material and a material balancing and stabilizing system, through the synergistic effect of all the components, the generation amount and the utilization efficiency of singlet oxygen are remarkably improved, and then the excellent pest control and pesticide residue degradation effects are achieved. In actual agricultural application, an aqueous solution prepared from the composite material can generate air containing singlet oxygen after being atomized and aerated, the air is uniformly released through a greenhouse pipeline, germ spores in the air can be quickly killed, and meanwhile, the composite material is sprayed on the surfaces of crops, so that mold and gray mold of the crops such as tomatoes and cucumbers can be effectively prevented and treated; the efficient degradation effect on organic phosphorus pesticide residues on the surfaces of the vegetables is realized. The whole technical scheme does not need to use chemical pesticides, meets the development requirements of green agriculture, can effectively reduce pesticide residue pollution, and protects the ecological environment of soil.

The application provides a low-code application correctness verification method and system based on formal verification. The low-code application correctness verification method based on formal verification comprises the following steps: extracting a flow of a low-code application, setting a formal model for the flow of the low-code application; verifying the formal model, determining whether the low-code application meets performance requirements according to a verification result, and when the verification result indicates that the low-code application does not meet the performance requirements, performing a performance test on the low-code application to obtain test items that do not meet the performance requirements; extracting the test items that do not meet the performance requirements, and performing performance unqualified grade division on the test items to obtain unqualified grades. The system comprises modules corresponding to the method steps.

The invention belongs to the technical field of protein extraction, and particularly relates to an extraction method of AQP4 protein. 4% OGP is adopted for mild dissolution, 5% glycerin is used for antigen protection, the activity retention rate is larger than or equal to 85%, the activity retention rate is only about 50% due to denaturation of a glycine acid eluent in an immunoprecipitation method, and the method is more suitable for functional and immune experiments. The method is a high immunocompetence extraction method aiming at AQP4, the purity of the purified AQP4 is larger than or equal to 80%, the autoimmunocompetence of the antigen is sufficiently reserved, and the requirements of structural analysis, functional experiments and reagent development are met. The method is low in cost, high in efficiency, low in equipment dependence degree and suitable for large-scale preparation, and high-valence antibodies are prevented from being used, and an ultra-speed centrifuge is not needed.

This invention discloses a high-saturation magnetization copper-iron alloy material, its preparation method, and its applications, belonging to the field of copper-iron alloy technology. The high-saturation magnetization copper-iron alloy material has an Fe content of 15-30 wt.%, with the balance being Cu and unavoidable impurities. The preparation method employs a composite processing system combining equal channel angular extrusion (ECAP) pre-processing and multi-stage variable temperature rotary forging, achieving simultaneous improvement in alloy strength, conductivity, and saturation magnetization within a short processing time. The Cu-Fe alloy prepared by this invention can achieve a saturation magnetization of over 70 emu / g, while also exhibiting good strength and conductivity. Furthermore, the experimental scheme is simple and easy to operate. These advantages effectively reduce the size of power electronic components and improve their stability during operation, meeting the development needs of the power and electrical industry.

This invention discloses a reconstituted tobacco leaf with the appearance of tobacco fibers and its preparation method. The reconstituted tobacco leaf comprises the following components by weight: 20-40 parts tobacco stems, 30-50 parts added fibers, 40-50 parts tobacco powder, and 0.4-2 parts colloid. The preparation method involves precise weighing of raw materials, separate pulping of tobacco stems, mixed pulping of tobacco powder and added fibers, compounding of multiple pulps, followed by pulping, dehydration, coating, drying, and rolling to obtain the finished product. The reconstituted tobacco leaf exhibits a clear appearance of natural tobacco fibers on its surface. The raw material ratio is highly adaptable, and the parameters of each step of the preparation process are highly controllable. It effectively preserves the original appearance and structure of tobacco fibers, giving the product both excellent physical properties and sensory quality. Furthermore, the process flow is adapted to the needs of industrial production, significantly improving the added value and market application value of paper-based reconstituted tobacco leaves.

This application provides a context-aware multi-turn dialogue and automatic chart generation method and related equipment, belonging to the field of power data processing technology. The method includes: initializing the session state based on system configuration files and user identity information to obtain a session state object; performing intent parsing and retrieval enhancement and completion on the user's natural language input information based on the session state object to obtain a query intent object; generating and validating power data queries based on the session state object and the query intent object to obtain query statements and query results; performing chart generation processing based on the session state object and query results to obtain a chart configuration object; performing semantic interpretation based on the session state object, query results, and chart configuration object to obtain interpretation results; and updating the session state object based on the query intent object, query statement, query results, chart configuration object, and interpretation results. This application can improve the accuracy of dialogue parsing and chart generation.

The utility model relates to the field of carbon fiber processing and manufacturing, in particular to a mold for manufacturing a large carbon urheen box, which is reasonable in structure, simple and convenient to operate, low in cost and capable of ensuring the forming quality of carbon fiber materials. The center of the lower die plate is provided with an elliptical lower die cavity matched with the appearance of a large carbon urheen box to be formed, the lower die plate is provided with more than two threaded holes corresponding to the two sides of the lower die cavity, the end corners of the lower die plate are provided with pin holes, and the threaded holes and the pin holes do not penetrate through the lower die plate; the upper die plate is fixed on the lower die plate through pins and bolts, an upper die cavity corresponding to the lower die cavity is arranged in the center of the upper die plate, and the upper die plate is composed of a left side plate, a neck groove loose piece, a right side plate and a tail column loose piece which are arranged around the upper die cavity.

This invention discloses a topology manager, relating to the field of optical quantum computing technology. The topology manager includes a topology matrix loading module, a topology self-checking module, and a topology update module. All modules are pure hardware integrated circuits, with no software processor involved in the core control throughout the entire process. The topology matrix loading module loads the topology matrix data, the topology self-checking module performs verification on the topology matrix, and the topology update module receives topology update instructions and atomically updates the topology matrix data. This invention implements topology management of optical interferometric networks through pure hardware, effectively improving the speed and reliability of topology loading, verification, and updating, and supporting dynamic topology updates during system operation.

This invention discloses a four-channel fuel cell bipolar plate and fuel cell, relating to the field of fuel cells. It includes an anode plate and a cathode plate arranged opposite each other. The anode plate forms parallel and staggered first and second ridges protruding towards the cathode plate, with the first and second ridges closely attached to the cathode plate, forming a first flow channel between them. A second flow channel and a third flow channel are formed on the opposite side of the first and second ridges relative to the cathode plate, respectively. The cathode plate protrudes along the first ridge and towards it to form a first nozzle, and along the second ridge and towards it to form a second nozzle, with the first and second nozzles arranged alternately. The bipolar plate of this invention has a dedicated drainage channel and can reuse water generated by the electrochemical reaction to self-humidify air and hydrogen, ensuring the normal operating temperature and humidity of the proton exchange membrane.

The invention discloses a positive electrode material as well as a preparation method and application thereof. The positive electrode material is obtained by carrying out anion doping on LiFeCl. The preparation method comprises the following steps: 1, weighing the raw materials LiCl, FeCl3 and the anionic dopant; and 2, carrying out ball milling on the weighed raw materials at 200 rpm for 2 hours by adopting a high-energy mechanical ball milling method, and then carrying out ball milling at 500 rpm for 10 hours to obtain uniform powder, namely a finished product of the positive electrode material. The positive electrode material is used for preparing a positive electrode for an all-solid-state battery. According to the invention, the intrinsic ionic conductivity of LiFeCl is improved through anion doping, so that the addition amount of the solid electrolyte in the positive electrode can be greatly reduced, thereby ensuring ion transmission, realizing higher active substance proportion and energy density, and reducing the cost and interface complexity.

The application relates to the technical field of oil field chemistry, and relates to a self-crosslinking thickening agent and a preparation method thereof. The self-crosslinking thickening agent is obtained by copolymerization of acrylamide, acrylic acid, a physical crosslinking monomer and a chemical crosslinking monomer. The physical crosslinking monomer is N-cinnamyl-N,N-dimethylhexadecyl ammonium chloride. The chemical crosslinking monomer is N-allyl-N,N-dimethyl-p-tolualdehyde bromide. The molar ratio of the acrylamide, the acrylic acid, the physical crosslinking monomer and the chemical crosslinking monomer is 70-80:15-25:0.1-0.5:0.1-0.5. The application provides a self-crosslinking thickening agent and a preparation method thereof. The thickening agent has good temperature resistance and salt resistance, meets the current development needs of oil and gas fields, the method principle is reliable, the operation is simple, the reaction condition is mild, and the application prospect in the market is wide. The thickening agent can be widely applied to the development of high-temperature and ultrahigh-temperature reservoir oil and gas resources.

The invention discloses a production process of a self-heat-preservation building block by utilizing solid wastes to cooperatively foam, and belongs to the technical field of building materials. The concrete comprises the following components in percentage by weight of dry materials: 14%-22% of cement, 6%-11% of lime and 6%-9% of perlite. The water-containing slurry comprises the following components in percentage by weight: 2.5%-5% of gypsum slurry, 18%-23% of waste slurry and 35%-56% of tailing slurry; the water-binder ratio is 0.65 to 0.98; the use amount of the aluminum powder accounts for 0.1-0.2% of the total mass. Wherein the perlite can effectively reduce the heat conductivity coefficient of the building block and improve the thermal insulation performance, and can achieve a synergistic effect with the silicon sludge to reduce the building energy consumption; a large amount of solid wastes such as waste slurry and tailing slurry are utilized, and the cutting wastes are recycled, so that the solid wastes are efficiently recycled, the environmental pollution is reduced, and the production cost is reduced; and aluminum powder foaming is combined with standing primary curing and autoclaved curing, so that a uniform pore structure is formed in the building block, and the building block has light weight and thermal insulation performance.

The bacillus subtilis strain against aeromonas and its application, the bacillus subtilis strain of the present application is named bacillus subtilis (wgb0621), and the preservation number is CCTCC NO: M 2026135. Bacillus subtilis The bacillus subtilis strain has good contact inhibition activity on aeromonas veronii and aeromonas hydrophila, can improve the survival rate of grass carp after being infected with aeromonas, has good safety, and is not dependent on diffusible bacteriostatic substances. The bacillus subtilis strain is suitable for biological prevention and control of aeromonas disease in aquaculture, and has good application prospect.

This invention belongs to the field of strawberry biocontrol technology, and relates to an enhanced biocontrol bacteria. Talaromyces kabodanensis A stability protectant, mainly composed of the following components by weight: 0.5-1.0 parts betaine, 2-3 parts sorbitol, 1-2 parts glycerol, and 2-4 parts sucrose. This invention utilizes the synergistic effect of betaine, sorbitol, glycerol, and sucrose, achieving significantly better results than any single protectant, and can significantly improve the stability of biocontrol bacteria. Talaromyces kabodanensis The product exhibits stability in biocontrol agents and extends their shelf life. After application of the biocontrol agent to strawberries, the biocontrol bacteria... Talaromyces kabodanensis The 7-day survival rate increased from 41.5% to 78.3%, thus ensuring the stable effectiveness of the biocontrol bacteria. The protective agents provided in this invention all use food-grade or pharmaceutical-grade raw materials, meeting the development needs of green and organic agriculture.

This invention discloses a steer-by-wire system and its design method based on cross-system signal detection, belonging to the field of automotive steering control technology. The system includes a steering actuator motor, a steering actuator motor controller, a steering gear, a steering road feel motor, a steering road feel motor controller, a steering domain controller, and a cross-system signal detection module. The cross-system signal detection module interacts with the steering domain controller, braking system, and drive system to collect and monitor the operating status of each system in real time, and aggregates the signals from multiple systems to the steering domain controller. The steering domain controller generates control commands for the steering actuator motor and steering road feel motor based on the multi-system signals and steering status feedback signals to complete the steering maneuver. This invention, through the design of real-time signal interaction across multiple systems, can quickly diagnose the source of a fault and adjust the control strategy when a fault occurs, achieving efficient fault diagnosis and redundant fault-tolerant control.

The invention provides warm mix asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. The warm mix asphalt comprises the following raw materials: matrix asphalt, epoxidized soybean oil and ardealite. The epoxy soybean oil and the phosphogypsum are doped into the matrix asphalt, the matrix asphalt is subjected to compound modification, and the synergistic effect of the epoxy soybean oil and the phosphogypsum is utilized, so that the construction viscosity of the asphalt is remarkably reduced, the low-temperature ductility of the asphalt is synchronously improved, the softening point is ensured not to be excessively reduced, and the negative influence of a traditional warm mixing agent on the performance of the asphalt is effectively overcome; the low-temperature cracking resistance of the asphalt pavement is enhanced, the service life of the pavement is prolonged, and the safety and comfort of road passage are improved; besides, the epoxidized soybean oil and the ardealite are used as additives, a new resource utilization way is opened up for the epoxidized soybean oil and the ardealite, remarkable economic and environment-friendly benefits are achieved, and the development requirements of green road engineering are met.

The utility model discloses a crawler-type modularized multifunctional orchard insecticide sprayer, which relates to the technical field of insecticide sprayers and comprises a crawler moving platform, a crawler moving module, an insecticide spraying module and a control system are arranged on the crawler moving platform, and the crawler moving module comprises a motor, a lithium battery, a crawler and a transmission mechanism. A rack is arranged at the bottom of the crawler belt moving platform, rotating wheels are arranged on the rack, a crawler belt is arranged between the rotating wheels and the auxiliary wheels, and a motor and a lithium battery are arranged on the crawler belt moving platform. Through modular design, the pesticide spraying module is detachable, the crawler belt platform can be independently used as a carrying platform after being detached, multiple purposes are achieved through one machine, the use value and the utilization rate of the equipment are improved, and the purchase cost of orchard equipment is reduced.

The application discloses a TCU system with automatic heat conduction oil recycling, which comprises a temperature rising pipeline, a first pneumatic regulating valve and a first heat exchanger are installed on the temperature rising pipeline, a temperature dropping pipeline is installed in a TCU device cabinet and is connected with the temperature rising pipeline in parallel, a second pneumatic regulating valve and a second heat exchanger are installed on the temperature dropping pipeline, a heat conduction oil circulating pipeline is installed in the TCU device cabinet, a circulating pump is installed on the heat conduction oil circulating pipeline, and the heat conduction oil circulating pipeline is connected with the first heat exchanger and the second heat exchanger, an expansion tank is installed on the top of the TCU device cabinet and is connected with the heat conduction oil circulating pipeline through a first backflow pipe, a reactor pipeline is connected with the heat conduction oil circulating pipeline, an air branch pipe is arranged on the reactor pipeline, a first switch ball valve is installed on the air branch pipe, a second switch ball valve is installed on the reactor pipeline, and a third switch ball valve is installed on the first backflow pipe. The application solves the problem that the heat conduction oil in the jacket affects the sterilization effect of the reactor.

The utility model relates to communication vibrator equipment technical field especially a kind of mesh octogram ultra-wideband vibrator, it includes support, set up the radiation metal plate and feed piece of octogram structure.The radiation metal plate includes four radiation sheets.The area enclosed by four radiation sheets is coaxially arranged with support.The vertex of two adjacent radiation sheets is provided with concave point, and the vertex of other two adjacent radiation sheets is provided with protruding convex point, and feed piece is coupled and connected in two concave points, two convex points.Feed piece is electrically connected by feed hole, cable core hole and cable core, feed column on it.Radiation metal plate on support is set into diamond type plane structure, so that vibrator can work in the frequency range of 680-960MHz VSWR≤1.4, can realize the antenna of more uniform beam width within horizontal plane 3dB width, can realize wideband and ultra-wideband in low frequency band, and compatibility is stronger.