582results about How to "Convenience guaranteed" patented technology

The invention discloses an energy storage control and adjustment method and system for distributed photovoltaic consumption, and relates to the technical field of renewable energy sources, and the method comprises the steps: obtaining illumination intensity, temperature data and historical load data, and predicting the future photovoltaic power generation amount and load demand changes; analyzing the voltage fluctuation of the power grid and the charging demand of the energy storage system based on the prediction results of the photovoltaic generating capacity and the load demand; according to the health state of the energy storage battery, optimizing the charging and discharging depth, and outputting an energy storage adjustment plan; dynamically optimizing the charging and discharging plan and reactive power regulation of the energy storage system by using a multi-objective optimization algorithm, and generating an optimal reactive power regulation instruction; according to the reactive power adjustment instruction, performing transformer area self-adaptive cooperative control to obtain a cooperative control result; according to the invention, through an area adaptive cooperative control mechanism, the reactive power regulation capability of the adjacent areas can be automatically coordinated when the regulation capability of the local energy storage system is insufficient, and the stability of the power grid and the utilization efficiency of the energy storage system are further enhanced.

The invention provides a task allocation and optimal scheduling method and system for a multi-robot collaborative industrial assembly line, and relates to the technical field of robots, comprising the steps of constructing a task allocation strategy network through deep reinforcement learning, encoding workpiece types and attribute information into a state vector input network, a multi-objective optimization function including total assembly time minimization, load balance degree maximization and energy consumption minimization is designed, a near-end strategy optimization algorithm is adopted to train network parameters, a robot task mapping matrix is output as a distribution scheme, and the network parameters are dynamically optimized and updated in an online learning mode. The task allocation efficiency of the multi-robot collaborative assembly production line can be remarkably improved, the dynamic optimization scheduling of the production line is realized, the system energy consumption is reduced, and the assembly efficiency is improved.

The embodiment of the invention provides an access control strategy construction method and device, electronic equipment and a storage medium. The access control strategy construction method comprises the following steps: determining access control elements and attributes thereof of an application based on an acquired resource access scene; based on the access control elements and the attributes thereof, an access control strategy template is created according to different access control scenes, and the access control strategy template comprises preset access control elements and attributes; selecting the access strategy template based on a service demand and assigning a value to the attribute to create a corresponding access control strategy; and performing matching calculation on the access control strategy and the intercepted resource access request based on a strategy calculation engine, and if matching succeeds, executing a corresponding strategy action. Through the steps, access control configuration is more convenient and easier to understand, and access control is more flexible.

The invention discloses a fixed-wing unmanned aerial vehicle predetermined time cooperative path following formation control method, and relates to an unmanned aerial vehicle technology. A multi-unmanned aerial vehicle cooperative path following control strategy based on preset time stability, neural network adaptive control and preset performance control is provided; according to the method, the multiple fixed-wing unmanned aerial vehicles can realize preset time convergence of path following errors and preset time preset performance convergence of control signal tracking errors under the conditions of external disturbance and actuator faults, so that a high-precision and quick-response cooperative path following formation control task is completed; and meanwhile, the control precision and robustness are improved.

The invention relates to the technical field of mobile communication, in particular to an automatic optimization method for a mobile base station network, which comprises the steps of collecting data of network equipment, user equipment and other related sources, cleaning a collected data set to ensure data quality, extracting related characteristics in the cleaned data, selecting a deep learning model for training, and optimizing the mobile base station network. A training model trained in advance is utilized to analyze potential problems of a base station network to obtain an optimization decision, network parameters are automatically adjusted according to the optimization decision based on an automatic script, the adjusted network parameters are monitored in real time, comparison before and after optimization of the base station network is carried out, and the network optimization effect is ensured. Therefore, the problem that according to an existing mobile base station network optimization method, due to the fact that an automatic planning tool and manual data analysis are needed in the optimization process, the process is tedious, time consumption is long, and the optimization efficiency is low is solved.

The invention relates to the technical field of intelligent buildings and elevators, and discloses an intelligent elevator passenger flow analysis and optimization system which comprises a flow monitoring module used for monitoring the passenger flow of an elevator waiting area in real time and obtaining passenger flow data; the data processing module is used for analyzing the passenger flow data and predicting the passenger flow in a future time period; the elevator dispatching module optimizes the dispatching strategy of the elevator according to the prediction result of the data processing module, and improves the efficiency of passengers to get on and off the elevator; and the energy efficiency optimization module adjusts the acceleration and deceleration process of the elevator according to the running state of the elevator so as to reduce the energy consumption of the elevator. By monitoring the passenger flow in the elevator waiting area in real time and conducting accurate analysis, the passenger flow in the future time period can be predicted, the elevator dispatching strategy is optimized, the waiting time of passengers is shortened, the waiting efficiency is improved, and intelligent dispatching is conducted on the elevator based on the shortest waiting time and the minimum energy consumption target.

The invention relates to a touch all-in-one machine interaction control method and device, computer equipment and a medium, and the method comprises the steps: receiving image data through a preset video stream protocol, and obtaining a corresponding image data stream; acquiring a real-time network bandwidth condition, and then performing adaptive compression processing on the image data stream based on the real-time network bandwidth condition, and dynamically adjusting image transmission parameters; comprehensively analyzing the image data stream by using a deep learning algorithm, extracting operation characteristics of a user, generating an output control instruction based on the operation characteristics, and further controlling and adjusting image display and / or an equipment state; content information is extracted from the image data stream, and content analysis is carried out by adopting a corresponding content analysis strategy according to the content information, so that real-time display and / or storage are / is carried out according to the analyzed content; and obtaining a user interaction behavior, generating a corresponding adjustment feedback instruction based on the user interaction behavior, and performing personalized adjustment on the user interface. The method has the effect of improving the image transmission quality.

The present invention relates to the technical field related to the conveying of textile fabrics, and specifically to a textile fabric conveying device, comprising a carrier, a clamping type deviation correction mechanism and an adjustable tensioning mechanism. The clamping type deviation correction mechanism is arranged on the transverse frame of the carrier, and adopts a clamping method to fix the textile fabric, and performs a deviation correction process on the textile fabric in real time through its sliding displacement. The adjustable tensioning mechanism is arranged symmetrically front and back about the horizontal central axis of the second roller, and can be slidably adjusted according to the width of the textile fabric. A third roller is movably arranged on the adjustable tensioning mechanism, and the third roller is used to tension and flatten the textile fabric. The textile fabric conveying device realizes the automatic clamping and fixing operation of the textile fabric, meets the use requirements of real-time deviation correction during the conveying process, and also realizes the tensioning process of the textile fabric during the conveying, avoids the accumulation of wrinkles during the conveying, and ensures the neat and effective conveying of the textile fabric.

The invention discloses quick-hardening cement mortar and an application method thereof, and relates to the technical field of building materials, the quick-hardening cement mortar is composed of the following components: quick-hardening sulphoaluminate cement, common Portland cement, aggregate, an additive and a fiber composition; the fiber composition comprises galvanized steel fibers and polymer fibers, and the polymer fibers comprise PVA fibers; a film layer modified by a silane coupling agent is formed on the surfaces of the galvanized steel fiber and the polymer fiber, and the silane coupling agent is selected from at least one of aminopropyltriethoxysilane and diamino type functional group silane. The galvanized steel fibers and the polymer fibers are adopted in the cement mortar, the polymer fibers generate pressure stress in a cement block by utilizing an environment that the cement is severely hydrated in a short time, and the polymer fibers and the galvanized steel fibers generate a synergistic effect, so that the overall anti-dry-crack effect of the cement block is achieved; through a silane coupling agent surface modification scheme, the anti-cracking effect is enhanced, and the effect of common long fibers is achieved through short fibers.

The invention relates to the technical field of image recognition, in particular to a quality detection and recognition method. The method comprises the steps of performing spatial mapping on an original image, performing feature extraction on the mapped image, performing step-by-step segmentation on an obtained image to be layered, extracting a required layer, forming color features by using color information of the layer, performing regression judgment through machine learning training, and obtaining a score. The color features are calculated through distribution of hue, saturation and brightness of each pixel in the image and comprise one or more combinations of a mean value, a standard deviation and a deviation. Through computer vision and image processing technologies, an optimal detection area in a sample is automatically identified and analyzed, stratified analysis is carried out, multi-dimensional quality data of the sample is detected, and rapid and accurate acquisition and quality evaluation of the multi-dimensional quality data of the sample are realized. For the evaluation standard difference of different groups, only the evaluation score Y value needs to be adjusted, the model does not need to be trained again, and the application range of the method is greatly widened.

The invention relates to a synchronous grouting material based on muddy silt shield muck and a preparation method thereof, and the synchronous grouting material comprises the following raw materials in parts by weight: 13 to 16 parts of cement, 16 to 20 parts of slag, 142 to 147 parts of fine sand containing silt powder, 0.03 to 0.1 part of trimethylsilyl ethyl acetate, 0.07 to 0.17 part of disodium hydroxyethylphosphonate, 0.03 to 0.1 part of pentasodium amino trimethylene phosphonate and 63 to 67 parts of water. According to the invention, the fine sand containing mud powder is used as a main raw material to replace bentonite and fine sand in synchronous grouting in the prior art, and is combined with a specific cement additive, so that the compressive strength and the impermeability of the synchronous grouting material are effectively improved through the synergistic effect of the components, local materials can be used, and the outward transportation and disposal cost of a large amount of muck can be greatly reduced.

The invention relates to the technical field of multi-core optical fiber connection, and provides a multi-core optical fiber high-efficiency plugging type micro-connection structure system and a connection method thereof.The system comprises a multi-core optical fiber connector body, an optical fiber plugging terminal, an optical fiber alignment auxiliary terminal and an optical fiber dynamic correction terminal; the multi-core optical fiber connector body is used for being connected with an optical fiber core of a multi-core optical fiber; the optical fiber plugging and unplugging terminal is used for realizing plugging and unplugging operation of the multi-core optical fiber connector body and the butt joint seat and simultaneously realizing mechanical alignment of the multi-core optical fiber connector body and the butt joint seat; the optical fiber alignment auxiliary terminal is used for assisting the multi-core optical fiber to realize micron-order alignment in the connection process through positioning and dynamic adjustment; the optical fiber dynamic correction terminal is used for correcting optical fiber connection offset caused by temperature change, stress and manufacturing errors in real time and maintaining the stability of the system. The method has the effect of improving the connection quality of the multi-core optical fiber.

The utility model discloses an orifice protection device for a cast-in-situ bored pile, and mainly relates to the field of building pile construction. Comprising a protection body, the protection body comprises a bottom frame and a top frame, a plurality of side frames are arranged between the bottom frame and the top frame, a cover plate is rotationally connected to the top frame, a warning assembly is arranged on the cover plate, a through hole is formed in the bottom frame and located below the cover plate, a plurality of fixing rods are arranged on the edge of the bottom frame, and the fixing rods are arranged on the bottom frame. A baffle is movably connected to the side frame. The protective structure has the advantages that the technical problem that an existing protective structure is insufficient in protective effect on the orifice can be solved, the protective structure is firmer, dislocation and movement caused by external wind power and the like are not prone to occurring, the protective effect on the orifice is improved, favorable support can be provided for the lower portion of a guide pipe and perfusion in the later period, and the service life of the guide pipe is prolonged. And the convenience of pile body pouring is ensured.

The invention provides a photovoltaic support rapid installation and adaptive terrain adjustment device, and relates to the technical field of photovoltaic supports. The photovoltaic support rapid installation and adaptive terrain adjustment device comprises a supporting plate, an installation mechanism is fixedly arranged at the upper end of the supporting plate, detection mechanisms are fixedly arranged in the middle of the periphery of the upper surface of the supporting plate, and supporting mechanisms are fixedly arranged at the four corners of the bottom face of the supporting plate. An energy storage mechanism is fixedly arranged in the middle of the bottom surface of the supporting plate, the mounting mechanism comprises a mounting frame, a photovoltaic panel is clamped in the mounting frame, hand holes are formed in the two sides of the upper surface of the mounting frame, and a first sliding groove is fixedly formed in one side of the upper surface of the mounting frame; a second sliding groove is fixedly formed in the other side of the upper surface of the mounting frame, and four first fixing rotary knobs are arranged on the periphery of the mounting frame in a threaded mode. And by arranging the mounting mechanism and the supporting mechanism, the mounting and adjusting difficulty of the device in use is reduced, and the overall practicability of the device is improved.

The invention provides an emergency electric seawater desalination box for a ship. The emergency electric seawater desalination box comprises a box body assembly, a membrane assembly, a battery assembly, a pump motor assembly, an electric control box assembly, a fixing frame assembly and the like, the box body assembly is connected with the fixing frame assembly through screws. The membrane assembly, the battery assembly and the like are connected with the fixing frame assembly through clamping grooves or screws, so that each assembly is prevented from being damaged during shaking or carrying; the battery assembly drives all the electric appliance assemblies to operate through the electric control box. A shock pad is mounted below the pump motor assembly, so that the motor is prevented from being damaged by excessive vibration; electric energy is adopted as an energy source for seawater desalination, and a rechargeable battery is installed to get rid of the rigid need for a continuous power supply, so that the emergency use requirements on the sea and in the field are met; the membrane device is arranged in a three-section tandem manner in a limited space, so that the energy consumption and the size of the device are reduced while the water yield is high; all the components are connected through the fixing support, all the components are reasonable in layout, and the device is high in stability, small in overall size and high in carrying convenience.

The invention relates to the technical field of batteries, in particular to a battery health state prediction method and device, terminal equipment and a computer program product. The method comprises the steps of obtaining current charging process data after vehicle charging is finished; inputting the current charging process data into a pre-trained prediction model, and performing battery health state prediction to obtain a prediction result; wherein the prediction model is obtained by taking historical charging process data of the vehicle as input and taking the battery health degree as a label for training; and outputting a prediction result. The prediction model takes historical charging process data of the vehicle as input and takes the battery health degree as a label for training, so that the accuracy and reliability of battery health state prediction are remarkably improved. According to the method, the health state of the battery can be accurately predicted in real time, the test period is short and simple, the health state of the current battery can be accurately evaluated, possible battery performance degradation is warned in advance, and the service life of the battery is effectively prolonged.

The invention provides a reinforcing device for a fabricated steel structure column and a construction method thereof.The reinforcing device comprises a bottom unit detachably connected with the ground through a connecting piece, the bottom face of the steel structure column is pressed on the bottom unit, and the bottom unit is provided with a clamping assembly used for being supported on the inner wall of the steel structure column; reinforcing units used for being clamped to the outer wall of the steel structure column are arranged on the two sides of the clamping assembly correspondingly, the height of each reinforcing unit is adjusted through a vertical driving assembly, and the distance between the two reinforcing units is adjusted through a transverse driving assembly. The bottom face of the steel structure column is completely attached to the bottom unit, the contact area of the bottom face of the steel structure column and the ground is indirectly increased, and therefore the overall stability of the steel structure column during installation and use is improved. The reinforcing positions of the reinforcing units and the steel structure columns are adjusted through the vertical driving assemblies, reinforcing of the reinforcing units and the steel structure columns with different inner diameters can be adjusted through the transverse driving assemblies, the application range is wide, and operation is accurate.

The invention discloses a water spraying device for a building facade. The water spraying device comprises a fixing device, a control device, a spraying pipe moving support and a water supply device. Wherein the fixing device and the control device are arranged on a roof, the spraying pipe moving support is arranged along the outer vertical face of a building, and the water supply device comprises a water supply hose connected with a spraying pipe and a high-pressure water pump connected with the water supply hose; and the spraying pipe moves up and down along the outer vertical surface of the building along the spraying pipe moving bracket. According to the device and the method, the shape of the spraying pipe can be adjusted, and the exterior facade water spraying device can be conveniently moved up and down so as to adapt to different exterior facade shapes. And power is provided through the winch, so that the convenience of vertical movement of the PVC water spraying pipe is ensured. And meanwhile, the safety of the test process is ensured by adding the balance weight. The vertical water supply pipe provides pressure through a water pump, the transverse PVC water spraying pipe can be adjusted and assembled according to the actual field facade, and adaptability is greatly improved.

The utility model provides a protection device for an underwater animal experiment, and belongs to the field of underwater animal experiments. The brain cover part, the viscera cover part and the hip cover part are driven to be opened or closed through the opening and closing module, and the problem that in the prior art, an experimental device capable of protecting the brain and viscera of an experimental animal body from being damaged by vibration signals is lacked is solved. The device comprises a cover body module, a mounting base and an opening and closing module, the cover body module is fixedly mounted on the mounting base, and the opening and closing module controls the cover body module to be opened and closed; the cover body module comprises a brain cover part, an internal organ cover part, a hip cover part, a front side cover, a rear side cover, a bottom cover, a first partition plate and a second partition plate; the brain cover part, the viscera cover part, the hip cover part, the front side cover, the rear side cover, the bottom cover, the first partition plate and the second partition plate are each provided with an interlayer.

The invention discloses an edge computing task unloading method and device of the Internet of Things, terminal equipment and a storage medium, and can construct a first model and a second model which can respectively compute local unloading overhead of mobile equipment and edge unloading overhead of network edge equipment based on actual conditions reflecting different scenes and task requirements. According to the method and the system, the first model and the second model are constructed according to the two models, the third model with the minimum total unloading overhead as the target is further constructed according to the two models, and even if multiple mobile devices request task unloading at the same time, the third model with the unloading overhead accurately calculated and the minimum total overhead as the target can more effectively allocate computing resources and network bandwidths, so that the task unloading efficiency is improved. According to the method, the task execution delay can be reduced, unnecessary resource waste can be avoided, the unloading strategy can be dynamically adjusted according to different scenes and requirements to generate the optimal unloading scheme, the task execution delay and the resource waste are reduced, and the task unloading and processing efficiency is improved.

The utility model discloses an overhead ground structure of a building, which relates to the technical field of dry-method integral pavement and comprises splice plates and a plurality of connecting plates. The supporting piece is connected to the ground and can be used for supporting the splice plate; wherein the supporting piece comprises a supporting column, the center of the supporting column is connected with a threaded rod, and the threaded rod is sleeved with a sliding support; a ball head is arranged at the top of the sliding support and can be connected with a butt joint piece at the corner of the splice plate in a clamped mode. According to the building overhead ground structure, due to the fact that the splicing plates and the supporting pieces are connected together in an inserting mode, the supporting pieces and the splicing plates are fixed in a point-to-face mode, and the floor is erected, the problem that when an existing building overhead ground structure is used, the splicing plates and the supporting pieces are fixed in a point-to-face mode is effectively solved. The technical problems that in the prior art, installation is complex, and the floor is prone to noise are solved, the floor is erected while the floor is rapidly installed, and the floor cannot collide with other objects.

The invention provides a method and a system for predicting the service life of a pipe under the corrosion action of environmental factors, and relates to the technical field of corrosion and protection of pipeline materials. Environmental factors such as water flow velocity, pH value and temperature are acquired, interaction of the factors is analyzed, a standard corrosion rate is generated, and corrosion rate data of each experimental point are collected; comparing with a standard corrosion rate, recording data of experimental points exceeding the standard corrosion rate, constructing a quadratic polynomial regression equation related to the corrosion rate, calculating a statistic value F and a probability value P in the equation, judging whether the regression equation is significant or not, predicting the corrosion rate under the current environmental condition, and determining the corrosion rate of the pipe according to the predicted corrosion rate and the initial thickness of the pipe. And calculating the remaining service life of the pipe. According to the method, the service life of the pipe under the corrosion of the environmental factors is predicted by acquiring the environmental factors, analyzing the interaction, collecting the experimental data and constructing the regression equation.

The invention relates to the field of slope foundation trench excavation, is used for solving the problem that a square grid method has a large error in earthwork excavation amount evaluation of a complex terrain, and particularly relates to a BIM model-based hydraulic reclamation foundation slope foundation trench excavation engineering amount evaluation system. Comprising a scanning generation unit, an elevation analysis unit, an engineering quantity calculation unit, a grid adjustment unit and a result output unit. According to the method, when the earthwork excavation volume is estimated, modeling analysis is carried out on the seabed surface and the excavation position on the basis of the scanned and measured seabed surface through the BIM technology, so that the earthwork volume needing to be excavated is obtained, estimation of the earthwork excavation volume is achieved, and meanwhile, when the earthwork excavation volume is estimated, the earthwork excavation volume is accurately estimated. Different sizes of the square grids are determined according to different flatness degrees of the seabed surface, so that the sizes of the square grids can actively adapt to the flatness degree of the sea level, the convenience of square grid earthwork volume evaluation is ensured, and the accuracy degree of earthwork excavation volume estimation under the complex terrain is improved.

The invention belongs to the technical field of medical care equipment, and particularly relates to a bilateral blood pressure measuring method, system and device based on pulse and finger pressure of both hands. The blood pressure measuring method comprises the steps that pressure signals and photoelectric pulse wave signals PPG generated when the thumb and the index finger of a user gradually pressurize and press are synchronously collected, and then peak values in the PPG signals corresponding to the pressure signals of 0 mmHg to 180 mmHg are fitted into an envelope line; the pressure signal value at the envelope peak moment is the average arterial pressure MAP, and the peak value is the pulse wave amplitude value AMAP of the average arterial pressure; then querying a blood pressure measurement normalization coefficient table to obtain a systolic pressure proportionality coefficient KSBP and a diastolic pressure proportionality coefficient KDBP corresponding to the current MAP; finally, the AMAP is multiplied by the KSBP and the KDBP to obtain the blood pressure detection process of the user. A signal detection part in the equipment comprises a pressure sensor and a photoelectric pulse sensor. The scheme of the invention has the advantages of high precision, simple measurement, good comfort and portability, and continuous measurement.

The utility model relates to an anti-loose joint, in particular to a primary and secondary nut compression type anti-loose joint. A primary and secondary nut pressing type anti-loosening connector comprises a tubular connector body with two through ends, an outer limiting ring is circumferentially arranged in the middle of the outer wall of the connector body, a threaded connecting hole is formed in the connector body in a through mode, and an inner limiting ring is circumferentially arranged in the middle of the threaded connecting hole. The two ends of the inner wall of the connector body are each provided with a notch in the circumferential direction, the two ends of the threaded connecting hole are symmetrically and sequentially provided with a sealing ring, a gasket and an opening ring from inside to outside along the inner limiting ring, and the two sealing rings are embedded into the corresponding notches respectively. The utility model aims to provide a primary and secondary nut compression type anti-loose joint which is simple in structure, convenient to install and good in anti-loose effect.

The invention provides a method for retarding soil acidification and increasing the content of fixed inorganic carbon in soil, and relates to the technical field of soil improvement. According to the method, the wollastonite is firstly crushed, then the crushed wollastonite is uniformly spread on the surface of the soil and then mixed into a soil plough layer, and the improvement of retarding soil acidification and increasing soil fixed inorganic carbon is realized. The crushed wollastonite is spread on the surface of the soil and then mixed into a plough layer to generate stable bicarbonate which is beneficial to sealing of inorganic carbon in the soil, acidic substances in the soil can be remarkably neutralized, the soil acidification process is relieved, the air permeability and the water binding capacity of the soil are improved, and then the fertility of the soil is improved; crop root growth is promoted, nutrient absorption of plants is improved, crop yield and quality are further improved, and the method is an efficient and low-cost acidified soil improvement technology.

The utility model discloses a plastic spraying bridge stand, comprising a bridge stand body which is provided with two ends and a side opening structure and is used for placing a cable; the cover plate is arranged to be arranged above the opening in one side of the bridge body in a covering manner; the plurality of plastic fasteners are arranged to be integrally connected with the bridge body; the deformation gap is arranged to be matched with the plastic fastener to enable the plastic fastener to plastically deform so as to fasten and fix the cover plate on the bridge body; and the limiting structure is arranged between the cover plate and the plastic fastener and is used for limiting the relative movement of the cover plate and the plastic fastener along the length direction of the bridge body. The utility model has the following advantages and effects: the device is simple and convenient to operate and low in production cost, so that the convenience of later maintenance is ensured, and the market competitiveness of the product is greatly improved.

The pipeline comprises a drainage pipe, a baffle and a drainage hole, the baffle is fixedly arranged on the left side in the drainage pipe, the drainage hole is integrally formed in the lower end in the baffle, and a switching assembly is arranged on the left side in the drainage pipe. According to the utility model, through the design of a switching function, the used filter screen and the unused filter screen can be switched, so that the unused filter screen can filter sewage, the normal discharge of the sewage is ensured, in addition, a worker can clean the used filter screen, and the working efficiency is improved. And the subsequent use normality of the used filter screen is ensured. By means of the design of the partition function, when a worker cleans the used filter screen, sewage cannot make contact with the used filter screen, then the situation that the worker is polluted by the sewage is avoided, the convenience of cleaning the used filter screen by the worker is guaranteed, and the worker is protected.

The utility model discloses a magnetic circuit part and connector connection structure and an electromagnet, the magnetic circuit part comprises a magnetic circuit part and a connector, the magnetic circuit part comprises a coil rack and a yoke, the yoke and the coil rack are relatively fixed, an enameled wire is wound on the coil rack, a plurality of coil leading-out pins are arranged on the coil rack, and each end of the enameled wire is respectively wound and connected with the corresponding coil leading-out pins; the connector comprises an insulated support and a plurality of leading-out ends mounted on the support; the support is fixedly connected with the yoke, and the coil leading-out pins are electrically connected with the leading-out ends in a one-to-one mode respectively. The support of the connector is fixedly connected with the yoke, so that the fixing position of the connector is more flexible, the connector can be conveniently arranged according to actual requirements, the yoke has enough area to be connected and matched with the support, and the support is connected with the yoke through plastic and metal, so that the connector is more convenient to realize the connection and fixation of the support, and the connector is more convenient to use. And the connection reliability of the support can be improved.

The welding limiting clamp for oil and gas pipeline construction comprises a movable frame, two electric telescopic rods are vertically and fixedly installed on the movable frame in a spaced mode, the piston rod ends of the two electric telescopic rods are fixedly connected with V-shaped frames, the bottoms of the V-shaped frames are fixedly connected with the piston rod ends of the electric telescopic rods, and the piston rod ends of the electric telescopic rods are fixedly connected with the V-shaped frames. One end of the top of the V-shaped frame is rotationally connected with one end of a movable pressing plate, the other end of the movable pressing plate penetrates through the other end of the top of the V-shaped frame, and a locking structure used for locking the movable pressing plate is arranged at the other end of the top of the V-shaped frame. By arranging the two fixing structures, the two ends of the leakage part of the pipeline can be supported and fixed, so that the leakage part is exposed, welding is facilitated, the fixing structures are convenient to operate, and the operation convenience can be guaranteed.