158 results about "Valve hall" patented technology

The invention discloses an intelligent detection robot system for a valve hall assembly of a power converter station and a detection method. A robot body adopts an overhead six-axis series mechanical arm structure and is suspended in the center of the top of a valve hall; the intelligent path planning module performs optimization by combining a probability path diagram method with an improved A * bidirectional search algorithm, and ensures that the robot has efficient obstacle avoidance capability and an optimal moving track in a complex environment; the point cloud data detection and processing module adopts a multi-sensor fusion technology, combines an ICP algorithm to complete point cloud registration, and generates a three-dimensional model with labels. Compared with traditional manual detection, the system has the advantages that the detection efficiency and safety are improved, the labor cost is remarkably reduced, the development of intelligent maintenance means of electric power facilities is promoted, and technical guarantee is provided for stable operation of a converter station.

The invention discloses a converter station valve hall unmanned inspection method, device and equipment and a storage medium, and relates to the technical field of converter station equipment inspection, and the converter station valve hall unmanned inspection method comprises the steps: obtaining to-be-inspected equipment and the priority of the to-be-inspected equipment; establishing a valve hall three-dimensional model containing equipment information by using a laser radar; planning an inspection path according to the equipment, the priority and the model, and determining current inspection equipment and information; acquiring an equipment image through an infrared camera and a high-definition camera, and inputting the equipment image into the fault detection model to obtain a preliminary result; and sending the preliminary result, the equipment information and the temperature, humidity, ultrasonic wave and gas monitoring data to a monitoring system or a cloud, and carrying out deep fault analysis to complete routing inspection. According to the method, the equipment state can be evaluated from multiple dimensions, the equipment fault in the converter station valve hall can be identified timely and accurately, the reliability and safety of the equipment are improved, and the stable operation of the converter station valve hall is ensured.

The invention relates to a multispectral extra-high pressure valve hall defect identification method. The method comprises the following steps: acquiring multispectral image data of a device in an extra-high pressure valve hall and preprocessing the multispectral image data; constructing a multispectral feature extraction network; designing a cross-modal feature fusion network; the fused features are input into an improved YOLOv11 network; forming a defect identification model; and training a defect identification model by adopting a three-stage progressive framework. According to the method, a high-quality multi-modal training data set is constructed through space-time synchronous registration and an adaptive data enhancement strategy, so that the generalization ability of the model is remarkably improved, and high-precision collaborative recognition of various defects such as cracks, corrosion and discharge is realized; the multi-modal recognition accuracy is kept to be larger than 90% and is improved by 30% compared with a single-spectrum method, the real-time monitoring requirement of the valve hall is met based on the YOLO frame, the method is successfully applied to an online monitoring system of the extra-high-voltage valve hall, efficient and reliable technical support is provided for intelligent operation and maintenance of power equipment, and the method has remarkable engineering application value and market prospects.

The invention relates to the technical field of converter valve fault diagnosis, and provides a converter valve fault monitoring method based on a non-contact microphone array. The method comprises the following steps: collecting microphone array signals in a valve hall in real time; array signal noise reduction processing is carried out to improve the signal-to-noise ratio of signals; voice activity detection is carried out, abnormal sound signals are found out, and further fault judgment is carried out; and voiceprint feature extraction: extracting Mel spectrum features of the audio as model input, and constructing an improved deep residual shrinkage network model to accurately identify the fault type of the converter valve. The non-contact microphone array is adopted to collect sound signals in the converter valve hall, and the array signal noise reduction technology is matched, so that the problem that the sound receiving effect of a single microphone is poor is solved; meanwhile, the principle that Mel spectrum texture features of different sounds are different is utilized, voice recognition is converted into image classification, and the recognition accuracy of converter valve voiceprint faults is improved.

The invention relates to a BIM technology-based converter station valve hall steel roof truss structure design method and system, and the method comprises the following steps: determining valve hall equipment information and pipeline information through multi-specialty cooperation, and building a valve hall size and an equipment pipeline positioning reference; a steel roof truss space supporting structure and pipeline track separation scheme is generated based on equipment plane and facade arrangement; a multi-specialty refined three-dimensional model is constructed on a BIM platform, and spatial positioning of a steel roof truss framework and pipelines is achieved through parametric modeling; executing collision check and iteratively optimizing the three-dimensional model to ensure that no conflict exists between the pipeline and the structure; and uploading the verified three-dimensional model to a digital management platform.

The invention discloses an SVG valve hall multi-source monitoring data fusion method and fusion system, and belongs to the technical field of power system equipment monitoring, and the method comprises the steps: carrying out the abnormal value and missing value data cleaning of initial data, outputting the preprocessed monitoring data, carrying out the algorithm matching of the preprocessed monitoring data to complete the time-space unification, and carrying out the fusion of the SVG valve hall multi-source monitoring data. Extracting associated features, forming a multi-source feature parameter set, quantifying data source reliability differences and locking key features by taking the multi-source feature parameter set as a reference, forming a dynamic fusion weight distribution scheme and key feature data, calling the multi-source feature parameter set, and eliminating feature conflicts; and generating a comprehensive fault diagnosis result and a health state evaluation index of the valve hall equipment, outputting early warning information and maintenance decision suggestions, and completing the whole data fusion closed-loop application. And a more efficient monitoring scheme is provided for safe operation of valve hall equipment.

The invention provides an anti-condensation device, a cooling system, an anti-condensation method and equipment for a converter valve, and the device is connected to the cooling system, and comprises a valve group, a short-circuit pipeline, and a heating device and a water resistance balancing device which are arranged on the short-circuit pipeline; the method comprises the following steps: controlling the cooling loop and the anti-condensation device to work according to the real-time environment temperature in the converter valve hall; according to the device and method, two-stage anti-condensation control over a cooling loop and an anti-condensation device is achieved by arranging a valve set, it is guaranteed that water resistance on an internal circulation operation short-circuit pipeline is consistent with that of an original heat exchange device in combination with a water resistance balancing device, and large fluctuation of the flow of a valve cooling system is avoided; the anti-condensation device is controlled to switch the internal circulation mode, natural heat dissipation of the heat exchange device can be completely cut off, it is guaranteed that the heat dissipation capacity of the heat exchange device and the heating capacity of the anti-condensation device do not conflict or counteract each other, the temperature of a cooling medium is effectively controlled, and therefore condensation in the converter valve is prevented when an air conditioning system of the converter valve breaks down.

The invention discloses a high-voltage cascade valve hall energy storage broadband oscillation self-adaptive layered suppression system and method, and the system comprises a system layer controller, a valve hall layer controller and a unit layer controller which communicate through a dual-redundancy Ethernet. The system layer controller achieves the global oscillation monitoring and task distribution based on the electrical quantity of a grid-connected point. A valve hall layer controller monitors the state of the power unit, calculates the optimal control parameter and coordinates the action of the unit; and the unit layer controller receives the parameters, adaptively adjusts and executes control. The method comprises the steps that oscillation modes and risks are recognized through multi-domain detection; a Gaussian distribution function distributes a valve hall task weight; performing pole assignment to optimize PI parameters; performing feedforward compensation and PWM optimization execution suppression; the effect is evaluated regularly and adjusted dynamically, and reference parameters are recovered gradually after oscillation is eliminated. According to the invention, the layered architecture of the high-voltage cascade energy storage system is fully utilized, a three-level cooperative control strategy is designed, control parameters of each layer are adaptively adjusted according to oscillation characteristics, and rapid and accurate suppression of broadband oscillation is realized.

The invention provides a method for predicting the discharge voltage of a grading ring to a ground air gap, and the method comprises the steps: defining an effective electric field region of the grading ring to the ground air gap, calculating the electric field distribution of the effective electric field region, extracting the electric field distribution characteristics of the effective electric field region, and constructing a voltage prediction model based on BPNN. The method comprises the steps of selecting electric field distribution characteristics on the basis of an MIC (Maximum Information Coefficient), constructing a data set, training a voltage prediction model through an ISSA algorithm (multi-strategy improved salp group algorithm) on the basis of the data set, and predicting the ground air gap discharge voltage of the grading ring on the basis of the trained voltage prediction model. According to the method, reference can be provided for safety and economical efficiency of design and installation of the converter station valve hall fitting grading ring in actual engineering, and the design reliability is improved.

The invention discloses a controllable commutation converter valve hall water leakage detection method based on mobile laser. According to the method, a holder capable of moving along a preset track is mounted on the inner wall of a valve hall, and a point laser and an image acquisition device are arranged on the holder, so that dynamic inspection of the whole area is realized. A background image is collected in a state that a laser is turned off, multiple frames of images are continuously collected within a preset time after laser is turned on, a highlight area caused by laser irradiation is extracted through pixel level difference processing, and laser track interference is eliminated through contour recognition. And then connected domain analysis is carried out on the highlight area, a candidate spot area is extracted, the roundness, gray level profile goodness of fit and spectrum energy characteristics of the candidate spot area are calculated, whether droplet reflection exists or not is judged from geometric morphology, gray level distribution and texture characteristics in a multi-dimensional mode, and then water leakage is identified. The method effectively improves the detection precision and coverage rate, and is suitable for high-reliability automatic water leakage monitoring in a complex environment.

The present invention provides a small plugging assembly for a converter station valve hall, which belongs to the technical field of converter station valve hall plugging, and comprises: a small plugging body, which is made of a heat-insulating material, and the small plugging body forms a ring around the gap to be plugged, and the ring formed by the small plugging body has at least one vacant space for installing an expansion unit; an expansion unit, which is made of a heat-expanding material, and the expansion unit is arranged in the vacant space of the ring formed by the small plugging body. The present invention provides a small plugging assembly for a converter station valve hall, and when the temperature of the converter station valve hall rises, the large plug will be deformed by the heat, resulting in a gap between the large plug and the small plug. By arranging the expansion unit in the vacant space provided on the small plugging body, the expansion unit will expand by the heat to fill the gap, thereby ensuring the fire resistance and sealing of the valve hall.

The invention relates to the technical field of converter stations, in particular to a back-to-back converter station arrangement type based on the SLCC technology, and a power conversion unit comprises a first valve hall and a second valve hall; a direct-current field is arranged between the first valve hall and the second valve hall, and a direct-current field middle road, a smoothing reactor and a connecting reactor are arranged in the direct-current field; an LCC valve and an SVF valve are arranged in each of the first valve hall and the second valve hall; dC wall bushings are arranged on the hall walls, close to one side of the DC field, of the first valve hall and the second valve hall, and AC wall bushings are arranged on the hall walls, away from one side of the DC field, of the first valve hall and the second valve hall; the direct-current side of the LCC valve is connected to the smoothing reactor through a direct-current wall bushing, and the wire outlet side of the SVF valve is connected to the connecting reactor through the direct-current wall bushing. Therefore, the capacity transmission requirement can be met through the characteristics of the LCC valve, the dependence on an alternating current system is reduced through the characteristics of the SVF valve, the field of a conventional direct current alternating current filter is canceled, the occupied area is reduced, installation and maintenance are convenient, and the cost is reduced.

The application belongs to power transmission and transformation engineering technical field, and provides an interactive displacement amplification type wide-width isolation device and method for valve hall of converter station. The system comprises a top rubber block, side plates, a transverse energy dissipation device, a connecting rod, a displacement amplifier, a longitudinal damper, a spring piece, a fixing rod and a base. One end of each side plate is connected to two ends of the top rubber block respectively, and the other end of each side plate is inserted into the transverse energy dissipation device to realize transverse displacement through the transverse energy dissipation device. The side surface of the transverse energy dissipation device is fixed on the base with a cavity. The lower part of the transverse energy dissipation device is connected to the bottom surface of the base through the fixing rod. The lower part of the top rubber block is fixed with the connecting rod and forms an integral whole. The lower part of the displacement amplifier is connected to the longitudinal damper. The lower part of the longitudinal damper is an arc surface and is attached to the arc surface of the base. The two sides of the longitudinal damper are respectively attached to a spring piece. The horizontal and vertical vibrations are synchronously and efficiently dissipated.

The utility model discloses a valve hall roof supporting arrangement structure, which relates to the technical field of valve hall roofs and comprises a frame and a mounting seat. Fixing rods are fixed to the left side face and the right side face of the frame, the outer side ends of the fixing rods are fixedly connected with the middle of the inner side face of the mounting plate, the mounting base is mounted in the middle of the top face of the frame, the top face of the mounting base is connected with the bottom end of the support, and the top end of the support is connected with the bottom face of the fixing base. A fixing bolt is rotatably mounted in a through hole in the surface of the mounting seat, the fixing bolt is in threaded connection with a screw hole in the surface of the frame, and a mounting unit is arranged on the bottom surface of the frame; according to the valve hall roof supporting arrangement structure, the first connecting columns and the second connecting columns which are arranged in a crossed mode are adopted, the stability of connection between the frames can be improved, meanwhile, the first supporting steel and the second supporting steel which are obliquely arranged in a staggered mode can increase the bearing capacity of the frames, and different devices can be conveniently installed and used in cooperation with the movable I-shaped steel.

The application relates to a water trace detection system for a valve hall of a converter station, which is installed in the valve hall of the converter station and is characterized in that the system comprises a water trace inspection robot, a robot lifting platform and a robot lifting platform track, the robot lifting platform track is installed in the valve hall of the converter station along a vertical direction, the robot lifting platform is installed on the robot lifting platform track and is in sliding connection with the robot lifting platform track, the inspection robot moves between a patrol corridor of the valve hall of the converter station and the valve hall through the robot lifting platform, a patrol guide line is arranged on the ground of the valve hall of the converter station, and the water trace inspection robot patrols along the patrol guide line. Compared with the prior art, the application has the advantages of effectively realizing detection of water traces in the valve hall, high reliability and strong practicability.

The invention provides a cascade valve hall type energy storage valve tower unit, a valve tower and application of the cascade valve hall type energy storage valve tower unit and the valve tower, and belongs to the technical field of energy storage. The system comprises a plurality of energy storage modules which are sequentially connected in series, are vertically arranged on an insulating stand column frame, and are provided with liquid inlet pipe interfaces, liquid return pipe interfaces and fire interfaces; the liquid cooling pipeline system is respectively communicated with the liquid inlet pipe interface and the liquid return pipe interface, and takes away heat from the energy storage module through circulating cooling; one end of the fire-fighting pipeline is connected to the fire-fighting main pipeline, and the other end of the fire-fighting pipeline is connected to the fire-fighting connector. The capacity of the single-valve tower unit reaches 7.6 MWh or above through the vertical stacking arrangement of the multiple energy storage modules, and compared with a traditional single 20-foot energy storage container, the single-valve tower unit has the advantages of being larger in capacity and smaller in occupied area.

The present invention relates to a converter valve cooling system and its control method. The cooling system includes two identical converter valve cooling devices. By connecting the valve hall pipelines of the two converter valve cooling devices to each other and physically isolating them using electric switch valves, when one converter valve cooling device needs to be taken out of operation due to a fault, the electric switch valve opens, and the cooling medium of the other converter valve cooling device enters the valve hall pipeline of the faulty cooling device, which can supplement its cooling function. At this time, the converter valve will not lock and can still operate at a certain power, avoiding the converter valve tripping event caused by the fault of a single converter valve cooling device, and ultimately achieving the purpose of improving the reliability of the converter valve cooling system and increasing the availability of the converter valve system.

The invention discloses a control system and method for a water leakage detection device of a converter station valve hall ceiling, and the system comprises a meteorological information server communication module, a first temperature sensor, a second temperature sensor, a rainfall judgment module, and a water leakage detection control module. The working state of the water leakage detection device can be intelligently regulated and controlled according to real-time meteorological data and laser temperature information. The system obtains rainfall prediction in a future preset time period through the meteorological information server, and dynamically judges the current rainfall condition in combination with the real-time rainfall state of the roof rainfall sensor. According to different rainfall states, the water leakage detection control module respectively controls the laser to enter three working modes, and the control system realizes intelligent adjustment based on environment and meteorological conditions, ensures the accuracy of water leakage detection and equipment safety, and is suitable for long-term stable operation and efficient maintenance of the ceiling of the converter station valve hall.

1. The name of this design product: Valve Hall Robot Cabin. 2. Purpose of this design product: used to place and store valve hall robots. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The invention provides a power unit automatic overhaul testing device and a testing method and system thereof. The power unit automatic overhaul testing device comprises a controllable high-voltage power supply, a circuit breaker and a controller which are located in a valve hall. The controller is in communication connection with the controllable high-voltage power supply and the circuit breaker, and the controller is in communication connection with a monitoring control platform located outside the valve hall; the controllable high-voltage power supply is electrically connected with a tested object through the circuit breaker; the controller is used for controlling the on-off of the circuit breaker so as to control the connection state of the controllable high-voltage power supply and the tested object; the controller is also used for controlling the monitoring control platform to trigger the tested object and receiving the test state of the tested object sent by the monitoring control platform; wherein the monitoring control platform is in communication connection with the tested object, the device provided by the invention not only can reduce the risk of accidents caused by misoperation, but also can reduce the number of test working surfaces, the number of operators and operation steps, so that the working efficiency is greatly improved, and the maintenance cost is reduced.

The application relates to a direct-current transformer valve hall arrangement structure which adopts the technical scheme that: a direct-current transformer valve hall arrangement structure is characterized in that the valve hall is internally arranged with positive and negative electrode valves of a direct-current transformer; one side of the valve hall is a low-voltage direct-current incoming line end; the other side is a high-voltage direct-current incoming line end and a common incoming line end; and each incoming line end is connected with an external device through a wall or floor sleeve at different positions of the valve hall. The positive and negative electrode valves of the direct-current transformer are arranged in the valve hall, the arrangement is reasonable and compact, the space utilization rate is high, and the valve hall space is saved.

The utility model discloses a converter station valve hall vehicle tire dust removal device which comprises an industrial dust collector and a shell, the top of the shell is fixedly connected with a top cover, an opening groove is formed in the top of the top cover in a penetrating mode, and a rear roller and a front roller are rotationally installed at the positions, corresponding to the opening groove, in the top cover. A second gear motor used for driving the rear roller is fixedly mounted on the outer wall of the shell, and two second dust collection boxes are symmetrically arranged in the shell and located between the rear roller and the front roller; through the arrangement of the front roller, the rear roller, the second electric cylinder, the second dust collection shell, the brush roller, the third electric cylinder, the third dust collection box, the third brush, the industrial dust collector and the like, the peripheral wall and the outer side wall of a wheel of a working vehicle such as an overhead working truck or an electric forklift can be brushed and swept, so that floating dust adhering to the outer surface of a tire is effectively removed; therefore, dust and impurities brought into the valve hall by wheels are reduced, water washing is not needed, electrical equipment is prevented from being affected with damp, and the use effect is good.

The invention provides a flexible direct current transmission converter valve tower. The flexible direct current transmission converter valve tower comprises a bottom insulation supporting column, two rows of power assemblies symmetrically arranged on the bottom insulation supporting column, a voltage-sharing shielding mechanism, a cooling water pipeline and an optical fiber. The two columns of power assemblies are connected at intervals in an insulating manner, each power assembly comprises a plurality of layers of layer units which are connected at intervals in an insulating manner, each layer unit comprises a plurality of valve sections, and all the valve sections of the two columns of power assemblies form spiral electrical primary series connection along the peripheral side of the valve tower through connecting busbars; according to the valve tower, all the valve sections in the valve tower are arranged to be of a series connection structure, the connecting busbars in the whole valve tower are spirally arranged in a rising mode along the outer side of the valve tower, the path length of the connecting busbars is greatly reduced, the line stray feeling in the valve tower is reduced, and the connecting busbar cost is reduced; and the valve tower connecting busbar is arranged on the outer side of the valve tower, so that an infrared temperature monitoring instrument and a camera in the flexible straight valve hall can detect the temperature at the joint of the valve tower connecting busbar and the head operation condition of the power sub-module in real time, and operation and maintenance management of field personnel is facilitated.

The invention belongs to the technical field of converter valves, and particularly relates to a converter valve tower heat dissipating capacity calculation method and computer equipment. The method comprises the following steps: acquiring emissivity and surface area of each material in a converter valve tower; performing weighted summation on the emissivity of all the materials according to the proportion of the surface area to obtain the average emissivity of the converter valve tower; and according to the average emissivity of the converter valve tower, calculating the radiation heat dissipating capacity of the converter valve tower. According to the method, the influence of different emissivity of different materials and different surface area ratios on the average emissivity is considered, the more accurate average emissivity of the converter valve tower can be obtained, and then the more accurate radiation heat dissipation amount of the converter valve tower can be calculated according to the average emissivity of the converter valve tower. Therefore, the calculation precision of the air heat dissipating capacity of the converter valve is improved, and reference is provided for design of the converter valve, a converter valve cooling system and a valve hall heating ventilation air conditioner.

The application provides a DC valve hall wall bushing structure, which comprises a plurality of pipe sections axially sleeved on a current-carrying guide rod, and a moving ring axially movably sleeved outside the pipe sections; the moving ring is driven to move on the pipe sections in a direction close to an adjacent first connecting ring, so as to trigger a first positioning assembly and a second positioning assembly respectively, so that the first positioning assembly locks the relative position between the adjacent first connecting ring and a second connecting ring, and the second positioning assembly locks the relative position of the current-carrying guide rod inside the pipe section. The traditional integrated bushing is improved into a sectional structure with a plurality of pipe sections axially sleeved, so that the transportation, installation and maintenance difficulties of the super-long bushing are effectively solved, the problem of excessive cantilever load caused by the single body being too long and too heavy can be avoided, and the butt joint between the pipe sections and the fixation between the pipe section and the current-carrying guide rod can be conveniently and efficiently completed by driving the moving ring only, so that the structure is stable, the operation is simple, and the mechanical reliability is high.

The invention provides a valve hall wall profiled steel sheet construction robot and method, and relates to the technical field of building construction automation, and the robot comprises a body structure, a moving mechanism, a mounting mechanism, a sensing and recognition system and a control system. The body structure adopts a collaborative design of a vertically arranged truss and a wheel train; the moving mechanism comprises a body moving mechanism and an unmanned trolley, the body moving mechanism accurately moves along the vertical wall surface of the valve hall, and the SLAM unmanned trolley constructs a map to move and transport steel plates along with the truss in real time; the mounting mechanism is used for hoisting, positioning and fixedly mounting the profiled steel sheet through a three-degree-of-freedom screw turning device and a hoisting mechanical claw; the perception and recognition system recognizes the installation position of the profiled steel sheet through the machine vision and the deep learning technology, and self-positioning and path planning are achieved in combination with the SLAM technology. The construction efficiency of the profiled steel sheet can be effectively improved, the labor intensity of workers and the high-altitude operation risk are reduced, and intelligent construction is achieved.

This application belongs to the field of UAV path planning technology and provides a hierarchical collaborative 3D path planning method for UAVs in converter valve hall inspection. The method includes: first, equating the valve tower to a square column and the casing to a cylinder, constructing a 3D occupying grid and expanding it to obtain a feasible flight domain; within the domain, constructing a total cost function including path length, safety, altitude window, altitude difference, angle smoothing, and electromagnetic penalty; then, running the A* algorithm on a low-resolution grid to generate a global coarse path and construct a guiding corridor; under corridor constraints, using the RRT* algorithm for bias sampling and reconnection optimization to obtain a continuous and smooth reference path; finally, using DWA in velocity space for dynamic feasibility screening and safety assessment to achieve local tracking and online obstacle avoidance. This application effectively reduces the total path cost and planning time fluctuations, improves the success rate and safety distance, reduces the maximum turning angle, and enhances planning stability and executability in the narrow environment of converter valve halls.

The utility model discloses a special scissors fork platform for a power grid valve hall, which comprises an advancing vehicle body and a working platform, the working platform is arranged at the top of the advancing vehicle body through a scissors fork structure, a plurality of buffer devices are arranged on the outer wall of the working platform, and each buffer device comprises a fixed disc and an air bag arranged on one end face of the fixed disc. The other end face of the fixing disc is fixedly connected with the side wall of the working platform and provided with a control pump body used for inflating and deflating the air bag. The utility model has the characteristics that the soft support can be provided for the working platform during working, the shaking amplitude of the working platform is reduced, the stability of the working platform during working is maintained, the safety is ensured, the damage of the working platform and the valve tower caused by direct contact and collision between the working platform and the valve tower is avoided, the smooth working is ensured, and the like.

This invention relates to the field of power equipment technology, and in particular to a right-angle fitting for a valve hall and valve tower in an ultra-high voltage converter station. The fitting includes a support column with a disc fixedly connected to its outer wall; a shielding ball with a fixing ring fixedly connected to its inner wall, and multiple circumferentially arrayed connecting rods connecting the fixing ring and the disc; a connector fixedly connected to the top of the support column, with a sliding joint and a rotating joint movably connected to the connector, one end of which is respectively connected to a sliding end and a fixed end of a nut; multiple insulating sleeves detachably connected to the outside of the sliding end and the fixed end of the nut; and a protective mechanism disposed between the insulating sleeves and the shielding ball, comprising a reinforcing sleeve, a ring, and a protective cloth. This invention, by incorporating a protective mechanism and an adjustment unit, effectively reduces redundant space, prevents bird intrusion, and improves seismic performance, offering advantages such as reduced redundant space, lower risk of bird intrusion, and improved seismic performance.

The utility model discloses a fireproof and anti-explosion integrated plugging structure for a valve side sleeve hole of a converter transformer in a valve hall, and relates to the technical field of converter station design. The frame structure comprises a main body frame module and an assembling plate, the main body frame module comprises a plurality of keels which are spliced into the frame structure, and the assembling plate comprises an ultra-high performance concrete anti-explosion plate assembly, a fiber reinforced calcium silicate fireproof plate assembly and a glass magnesium plate assembly; the keels are located on the inner side of the glass magnesium board assembly, and cavities between the adjacent keels are filled with aluminum silicate fireproof cotton. The construction mode that the modular keels are assembled on site and the plates are compounded in a factory according to needs is adopted, the weight of a single plate can be greatly reduced, the plates can be manually carried and installed, installation can be completed without assistance of hoisting machinery, the construction difficulty is effectively reduced, the construction period is effectively shortened, and economic losses caused by power failure construction of the converter station are reduced.