High-voltage switch cabinet with fault detection function

Abstract

The invention discloses a high-voltage switch cabinet with a fault detection function, and belongs to the technical field of high-voltage switch cabinets, and the high-voltage switch cabinet with the fault detection function comprises a cabinet body, a plurality of cavities are formed in the cabinet body, a mounting plate is arranged at the top of the inner side of the cabinet body, and a plurality of through holes are formed in the mounting plate; a plurality of safety pressure relief assemblies corresponding to the through holes are arranged on the mounting plate, reset assemblies are arranged on the safety pressure relief assemblies, a net plate is arranged at the top of the cabinet body and movably arranged on the outer sides of the safety pressure relief assemblies in a sleeving mode, and a fault detection module located above the net plate is arranged on the inner wall of the cabinet body; the pressure relief valve has the advantages of stable and efficient pressure relief, convenience in resetting, repeatable pressure relief, prolonged service life, convenience in operation, reliable structure, simplicity, convenience and practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switchgear, and in particular to a high-voltage switchgear with a fault detection function. Background Art

[0002] High-voltage switchgear is a complete set of power distribution equipment with voltage levels ranging from 3.6kV to 550kV, primarily used in the power generation, transmission, distribution, conversion, and consumption stages of power systems. Its core functions include on-off control, fault protection, isolation, and power distribution. On-off control connects and disconnects circuits through components such as circuit breakers and load switches. Fault protection rapidly disconnects circuits in the event of short circuits, overloads, and other faults, protecting equipment and personnel. Isolation creates a clear disconnect point through disconnectors or circuit breaker trolleys, facilitating inspection and maintenance. Power distribution, the hub of the distribution system, ensures the rational allocation and dispatch of electrical energy.

[0003] When an explosion occurs inside the high-voltage switchgear, impact gas will be generated inside the high-voltage switchgear. The impact gas will cause the air pressure in the corresponding chamber to increase rapidly. The high-pressure environment will affect the normal operation of the electrical components in the chamber, and the corresponding chamber needs to be quickly depressurized.

[0004] Most of the existing pressure relief devices for high-voltage switchgear adopt a fusible nylon bolt to connect one end of the pressure relief cover plate, and the other end of the pressure relief cover plate is hinged to the pressure relief port. When the pressure is relieved, the nylon bolt quickly melts under the action of high temperature, releasing the fixation of one end of the pressure relief cover plate, and the impact gas pushes the pressure relief cover plate upward, so that the impact gas is discharged. Although this pressure relief method realizes the pressure relief operation, each pressure relief will cause the corresponding nylon bolt to melt. After the pressure relief is completed, the maintenance personnel need to use the corresponding tools to reconnect the corresponding pressure relief cover plate with a new nylon bolt. The operation is cumbersome and greatly increases the workload of the maintenance personnel. At the same time, it increases the pressure relief cost and cannot achieve the reuse of the nylon bolts.

[0005] Therefore, it is necessary to provide a high-voltage switchgear with a fault detection function to solve the above problems. Summary of the Invention

[0006] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide a high-voltage switchgear with a fault detection function to solve the problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A high-voltage switchgear with a fault detection function comprises a cabinet body, wherein a plurality of chambers are provided inside the cabinet body, wherein the plurality of chambers are respectively provided as a busbar chamber, a trolley chamber, a cable chamber, and a relay instrument chamber. The cabinet body is characterized in that a mounting plate corresponding to the busbar chamber, the trolley chamber, the cable chamber, and the relay instrument chamber is provided on the top of the inner side of the cabinet body, wherein a plurality of through holes are provided on the mounting plate. The cabinet body further comprises:

[0009] Safety pressure relief components, wherein a plurality of the safety pressure relief components are provided on the mounting plate, and the safety pressure relief components correspond to the through holes;

[0010] A reset component, the reset component being arranged on the safety pressure relief component;

[0011] A mesh plate is provided on the top of the cabinet and is movably sleeved on the outside of the safety pressure relief assembly;

[0012] A fault detection module is arranged on the inner wall of the cabinet and above the mesh plate.

[0013] As a further solution of the present invention, the safety pressure relief assembly includes a mounting tube arranged on the mounting plate, the top of the through hole is movably connected to the mesh plate, the bottom of the mounting tube is set as an opening, the opening corresponds to the through hole, a side groove in the vertical direction is opened on the side wall of the mounting tube, a limiting hole located between two adjacent side grooves is circumferentially provided on the upper part of the side wall of the mounting tube, a fixed guide column is connected to the center of the inner side of the mounting tube, and a movable ring is movably provided inside the mounting tube and sleeved on the outside of the fixed guide column, and the outer wall of the movable ring is circumferentially provided There are several sliders that slide with the side through grooves, and a mounting ring is provided on the movable ring. Several guide holes are distributed circumferentially on the mounting ring. The guide holes correspond to the limit holes. Several limit blocks are distributed circumferentially on the movable ring. The ends of the limit blocks away from each other pass through the guide holes and movably abut against the inner wall of the mounting cylinder. A first lifting ring is provided for the movable sleeve on the outer side of the fixed guide column, and the top of the limit block is hinged to the outer wall of the first lifting ring through a hinge rod. The outer sleeve of the fixed guide column is provided with a buffer module movably connected to the first lifting ring.

[0014] As a further solution of the present invention, the buffer module includes a second lifting ring and a third lifting ring that are movably mounted on the outside of the fixed guide column. The second lifting ring and the third lifting ring are respectively located on the upper and lower sides of the first lifting ring. The second lifting ring and the third lifting ring are connected by a number of guide rods that slide with the first lifting ring. A spring mounted on the outside of the guide rod is connected between the second lifting ring and the first lifting ring.

[0015] As a further solution of the present invention, the number of the side through grooves is consistent with the number of the limiting holes, the number of the side through grooves is consistent with the number of the sliders, and the number of the limiting blocks is consistent with the number of the limiting holes.

[0016] As a further solution of the present invention, the number of the side through grooves is set to six.

[0017] As a further solution of the present invention, a tapered surface is provided at one end of the movable ring close to the through hole.

[0018] As a further solution of the present invention, the reset assembly includes a pressing plate movably arranged on the top of the outer side of the mounting tube, and a plurality of sliding plates are circumferentially distributed on the bottom of the pressing plate. The end of the sliding plate away from the pressing plate passes through the top of the mounting tube and slides with the inner wall of the mounting tube. The end of the sliding plate away from the pressing plate is provided with a first inclined surface, and the end of the limit block close to the inner wall of the mounting tube is provided with a second inclined surface, and the second inclined surface is movably contacted with the first inclined surface.

[0019] As a further solution of the present invention, the number of the sliding plates is consistent with the number of the limiting blocks.

[0020] As a further solution of the present invention, the inclination angle of the first inclined surface is consistent with the inclination angle of the second inclined surface.

[0021] As a further solution of the present invention, a connecting ring is connected between the plurality of sliding plates located inside the installation cylinder.

[0022] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0023] 1. In the present invention, the interior of the cabinet can be detected through the fault detection module. When a fault occurs inside the cabinet, an alarm will be sounded in time to remind the staff to repair it; when the movable ring is at the lowest point, the slider contacts the lowest point of the side through groove, and the movable ring seals the through hole by cooperating with the through hole to prevent external dust or moisture from entering the corresponding chamber, which helps to maintain the stability of the working environment of the electrical components inside the cabinet.

[0024] 2. In the present invention, when the limit block moves up to be flush with the limit hole, the contact between the outer end of the limit block and the inner wall of the mounting tube is released, the spring extends downward and pushes the first lifting ring to move downward, and the first lifting ring pushes several limit blocks to move outward by being hinged with the hinge rod and slidingly cooperating with the limit block and the guide hole, so that the limit blocks are connected with the corresponding limit holes, thereby fixing the height of the movable ring, and the impact gas is discharged to the outside through several side through grooves distributed circumferentially, and the mesh plate is provided to facilitate the effective exhaust of the discharged impact gas. At the same time, the mesh plate can stably support the position of the mounting tube by being movably clamped with the mounting tube and the mounting tube is connected to the mounting plate, so as to avoid the impact gas from being too large and causing the position of the mounting tube to deviate, thereby improving the stability of pressure relief.

[0025] 3. In the present invention, after the pressure relief of the impact gas in the cabinet is completed, the maintenance personnel pushes the sliding plate downward by pressing the corresponding pressing plate and sliding the sliding plate with the inner wall of the installation tube. The sliding plate pushes the corresponding limit block 409 toward the direction close to the fixed guide column by sliding with the first inclined surface and the second inclined surface, which can release the clamping connection between the limit block and the limit hole, thereby releasing the fixation of the movable ring position.

[0026] 4. In the present invention, the limit block pushes the first lifting ring to move upward by approaching the fixed guide column and being hinged to the hinge rod, the distance between the first lifting ring and the second lifting ring is reduced, the spring is stressed and contracts; the spring will extend downward and push the first lifting ring to move downward, the first lifting ring pushes the movable ring to move downward synchronously by being hinged to the hinge rod and the limit block slidingly cooperating with the movable ring, the movable ring moves down to its original position by the action of its own gravity and the sliding cooperation of the slider and the side through groove, the safety pressure relief assembly can be reset, which is convenient for subsequent pressure relief needs, and improves the service life of the safety pressure relief assembly, avoids the problem that the existing pressure relief mechanism can only be used once, reduces the tedious operation of replacing the pressure relief mechanism, reduces costs, and improves work efficiency.

[0027] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional diagram of a high-voltage switchgear with a fault detection function in an embodiment of the invention.

[0029] Figure 2 It is a side sectional view of a high-voltage switchgear with a fault detection function in an embodiment of the invention.

[0030] Figure 3 It is a structural schematic diagram of the mounting plate in an embodiment of the invention.

[0031] Figure 4 It is a structural schematic diagram of the mounting plate and the safety pressure relief assembly in an embodiment of the invention.

[0032] Figure 5 It is a cross-sectional view of the safety pressure relief assembly in an embodiment of the invention.

[0033] Figure 6 It is a structural schematic diagram of the movable ring in an embodiment of the invention.

[0034] Figure 7 Schematic diagram of the structure of the pressing plate in an embodiment of the invention.

[0035] Reference numerals: 1, cabinet; 101, first movable door; 102, second movable door; 103, third movable door; 104, busbar compartment; 105, trolley compartment; 106, cable compartment; 107, relay and instrument compartment;

[0036] 2. Fault detection module;

[0037] 3. Stencil;

[0038] 4. Safety pressure relief assembly; 401. Mounting cylinder; 402. Side through groove; 403. Limiting hole; 404. Fixed guide post; 405. Movable ring; 4051. Conical surface; 406. Slider; 407. Mounting ring; 408. Guide hole; 409. Limiting block; 410. Articulated rod; 411. First lifting ring; 412. Guide rod; 413. Second lifting ring; 414. Third lifting ring; 415. Spring;

[0039] 5. Reset assembly; 501. Pressing plate; 502. Sliding plate; 503. Connecting ring; 504. First inclined surface; 505. Second inclined surface;

[0040] 6. Mounting plate; 601. Through hole. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0043] In one embodiment of the present invention, see Figures 1-4 A high-voltage switchgear with a fault detection function includes a cabinet 1, wherein the cabinet 1 is provided with a plurality of chambers, which are respectively set as a busbar chamber 104, a trolley chamber 105, a cable chamber 106 and a relay instrument chamber 107; a mounting plate 6 corresponding to the busbar chamber 104, the trolley chamber 105, the cable chamber 106 and the relay instrument chamber 107 is provided on the top of the inner side of the cabinet 1, and a plurality of through holes 601 are provided on the mounting plate 6, and a plurality of safety pressure relief components 4 corresponding to the through holes 601 are provided on the mounting plate 6, and a reset component 5 is provided on the safety pressure relief component 4; a mesh plate 3 is provided on the top of the cabinet 1, and the mesh plate 3 is movably sleeved on the outside of the safety pressure relief component 4; a fault detection module 2 is provided on the inner wall of the cabinet 1 above the mesh plate 3.

[0044] In the embodiment, the inside of the cabinet 1 can be detected by the fault detection module 2, and when a fault occurs in the inside of the cabinet 1, an alarm can be given in time to remind the staff to repair; when explosion or high pressure occurs in the corresponding chamber in the inside of the cabinet 1, the impact gas generated by the explosion can be guided out and efficiently guided out through the cooperation of the safety pressure relief assembly 4 and the mesh plate 3, so that the impact gas does not impact the external environment, and the safety pressure relief assembly 4 can be reset after the impact gas is guided out through the reset assembly 5, thereby avoiding the low efficiency of the existing safety pressure relief assembly 4 which is used only once, reducing the full utilization rate of the safety pressure relief assembly 4, and prolonging the service life of the safety pressure relief assembly 4.

[0045] In addition, the front of the cabinet 1 is sequentially provided with a first movable door 101, a second movable door 102 and a third movable door 103 from top to bottom, the corresponding chamber can be opened through the first movable door 101, the second movable door 102 and the third movable door 103, and the safety pressure relief assembly 4 can be corresponded to different chambers, so that different chambers have several pressure relief channels, and the different chambers can be quickly relieved, and the second movable door 102 and the third movable door 103 can be further provided with observation windows, so that the staff can observe the corresponding chamber in the inside of the cabinet 1.

[0046] In an embodiment of the present application, referring to Figures 1-6 , the safety pressure relief assembly 4 comprises a mounting cylinder 401 arranged on the mounting plate 6, the top of the through hole 601 is movably connected with the mesh plate 3, the bottom of the mounting cylinder 401 is provided with an opening, the opening corresponds to the through hole 601, a plurality of side through grooves 402 in the vertical direction are arranged on the side wall of the mounting cylinder 401 in the circumferential direction, a plurality of limiting holes 403 are arranged on the upper portion of the side wall of the mounting cylinder 401 in the circumferential direction and located between adjacent two side through grooves 402, a fixed guide column 404 is connected to the inside of the mounting cylinder 401, an active ring 405 is movably arranged in the inside of the mounting cylinder 401 and sleeved on the outside of the fixed guide column 404, a plurality of sliding blocks 406 are arranged on the outer wall of the active ring 405 in the circumferential direction and slidably connected with the side through grooves 402, an installation ring 407 is arranged on the active ring 405, a plurality of guide holes 408 are arranged on the installation ring 407 in the circumferential direction and correspond to the limiting holes 403, a plurality of limiting blocks 409 are slidably arranged on the active ring 405 in the circumferential direction, one end of the limiting blocks 409 away from each other penetrates through the guide hole 408 and movably abuts against the inner wall of the mounting cylinder 401, a first lifting ring 411 is movably sleeved on the outside of the fixed guide column 404, the top of the limiting block 409 is hingedly connected with the outer wall of the first lifting ring 411 through a hinge rod 410, and a buffer module is movably connected with the first lifting ring 411 and sleeved on the outside of the fixed guide column 404.

[0047] The buffer module includes a second lifting ring 413 and a third lifting ring 414 that are movably mounted on the outside of the fixed guide column 404. The second lifting ring 413 and the third lifting ring 414 are respectively located on the upper and lower sides of the first lifting ring 411. The second lifting ring 413 and the third lifting ring 414 are connected by a plurality of guide rods 412 that slide with the first lifting ring 411. A spring 415 that is mounted on the outside of the guide rod 412 is connected between the second lifting ring 413 and the first lifting ring 411.

[0048] In this embodiment, in the initial state, the outer end of the limit block 409 abuts against the inner wall of the installation tube 401, the movable ring 405 is at its original length, the distance between the second lifting ring 413 and the first lifting ring 411 is at its maximum, the angle between the hinge rod 410 and the movable ring 405 is at its maximum, the movable ring 405 is at its lowest point, the slider 406 contacts the lowest point of the side through groove 402, and the movable ring 405 seals the through hole 601 by cooperating with the through hole 601, thereby preventing external dust or moisture from entering the corresponding chamber, which helps to maintain the stability of the working environment of the electrical components inside the cabinet 1;

[0049] When an explosion occurs in the corresponding chamber of the cabinet 1, the impact gas generated by the explosion will quickly push the corresponding movable ring 405 upward. The movable ring 405 drives the mounting ring 407 and several limit blocks 409 to move upward synchronously by sliding with the slider 406 and the side through-slot 402. The limit block 409 pushes the first lifting ring 411 to move upward synchronously by being hinged to the hinge rod 410. The first lifting ring 411 pushes the second lifting ring 413 to move upward synchronously by being connected to the spring 415, thereby realizing the synchronous upward movement of the buffer module.

[0050] When the second lifting ring 413 begins to abut against the inner top of the installation cylinder 401, the limit block 409 is still located below the limit hole 403, and the impact gas will continue to push the movable ring 405 upward. The movable ring 405 drives the limit block 409 to move upward synchronously. The limit block 409 pushes the first lifting ring 411 to continue to move upward by being hinged to the hinge rod 410. Since the position of the second lifting ring 413 is fixed at this time, the upward movement of the first lifting ring 411 will reduce the distance between the first lifting ring 411 and the second lifting ring 413, and the spring 415 is stressed and contracts.

[0051] When the limit block 409 moves up to be flush with the limit hole 403, the contact between the outer end of the limit block 409 and the inner wall of the mounting tube 401 can be released, the spring 415 extends downward and pushes the first lifting ring 411 to move downward. The first lifting ring 411 pushes several limit blocks 409 to move outward by being hinged with the hinge rod 410 and the limit block 409 slidingly cooperates with the guide hole 408, so that the limit blocks 409 are connected to the corresponding limit holes 403, thereby fixing the height of the movable ring 405, and the impact gas is discharged to the outside through several circumferentially distributed side grooves 402. The mesh plate 3 is provided to facilitate the effective exhaust of the discharged impact gas. At the same time, the mesh plate 3 can stably support the position of the mounting tube 401 by being movably engaged with the mounting tube 401 and the mounting tube 401 is connected to the mounting plate 6, thereby preventing the impact gas from being too strong and causing the position of the mounting tube 401 to deviate, thereby improving the stability of pressure relief.

[0052] Among them, the number of the side through grooves 402 is consistent with the number of the limiting holes 403, the number of the side through grooves 402 is consistent with the number of the sliders 406, the number of the limiting blocks 409 is consistent with the number of the limiting holes 403, and the number of the side through grooves 402 can be set to six, which can ensure the rapid discharge of the impact gas.

[0053] In addition, a conical surface 4051 is provided at one end of the movable ring 405 close to the through hole 601. The pressing plate 501 of the safety pressure relief component 4 is provided to facilitate the discharge of the upward-flowing impact gas to the surrounding area of ​​the movable ring 405, thereby reducing the impact of the impact gas on the movable ring 405. At the same time, it is convenient for the impact gas to be discharged through the side groove 402.

[0054] In one embodiment of the present invention, see Figure 1-Figure 7 The reset assembly 5 includes a pressing plate 501 movably arranged on the top of the outer side of the mounting tube 401, and a plurality of sliding plates 502 are distributed circumferentially at the bottom of the pressing plate 501. The end of the sliding plate 502 away from the pressing plate 501 passes through the top of the mounting tube 401 and slides with the inner wall of the mounting tube 401. The end of the sliding plate 502 away from the pressing plate 501 is provided with a first inclined surface 504, and the end of the limit block 409 close to the inner wall of the mounting tube 401 is provided with a second inclined surface 505, and the second inclined surface 505 is movably in contact with the first inclined surface 504.

[0055] In this embodiment, in the initial state, the outer end of the limit block 409 abuts against the inner wall of the installation tube 401, the movable ring 405 is at its original length, the distance between the second lifting ring 413 and the first lifting ring 411 is at its maximum, the angle between the hinge rod 410 and the movable ring 405 is at its maximum, the movable ring 405 is at its lowest point, the slider 406 contacts the lowest point of the side through groove 402, the bottom of the pressing plate 501 fits against the top of the installation tube 401, and the bottom end of the sliding plate 502 corresponds to the limit hole 403, so that the limit hole 403 is in a covered state;

[0056] When an explosion occurs in the corresponding chamber of the cabinet 1, the impact gas generated by the explosion will quickly push the corresponding movable ring 405 upward. The movable ring 405 drives the mounting ring 407 and several limit blocks 409 to move upward synchronously by sliding with the slider 406 and the side through-slot 402. The limit block 409 pushes the first lifting ring 411 to move upward synchronously by being hinged to the hinge rod 410. The first lifting ring 411 pushes the second lifting ring 413 to move upward synchronously by being connected to the spring 415, thereby realizing the synchronous upward movement of the buffer module.

[0057] When the second lifting ring 413 begins to abut against the top of the inner side of the installation cylinder 401, the limit block 409 is still located below the limit hole 403, and the impact gas will continue to push the movable ring 405 upward, and the movable ring 405 drives the limit block 409 to move upward synchronously. The limit block 409 pushes the sliding plate 502 to move upward synchronously by contacting the first inclined surface 504 at the lower end of the sliding plate 502 through the second inclined surface 505. The sliding plate 502 slides with the inner wall of the installation cylinder 401 and the sliding plate 50 The pressing plate 501 is driven to move upward synchronously by penetrating the mounting tube 401. The upward movement of the pressing plate 501 clearly indicates the pressure relief operation of the corresponding safety pressure relief assembly 4. At the same time, the limit block 409 pushes the first lifting ring 411 to continue to move upward by being hinged to the hinge rod 410. Since the position of the second lifting ring 413 remains fixed at this time, the upward movement of the first lifting ring 411 will reduce the distance between the first lifting ring 411 and the second lifting ring 413, and the spring 415 is stressed and contracts.

[0058] When the limit block 409 moves up to be flush with the limit hole 403, the contact between the outer end of the limit block 409 and the inner wall of the installation tube 401 can be released, the spring 415 extends downward and pushes the first lifting ring 411 to move downward, and the first lifting ring 411 pushes several limit blocks 409 to move outward by being hinged to the hinge rod 410 and the limit block 409 slidingly cooperates with the guide hole 408, so that the limit blocks 409 are connected to the corresponding limit holes 403, thereby fixing the height of the movable ring 405, and the impact gas is discharged to the outside through several circumferentially distributed side grooves 402, and the mesh plate 3 is provided to facilitate the effective exhaust of the discharged impact gas. At the same time, the mesh plate 3 can stably support the position of the installation tube 401 by being movably engaged with the installation tube 401 and the installation tube 401 is connected to the installation plate 6, so as to avoid the impact gas from being too strong and causing the position of the installation tube 401 to deviate, thereby improving the stability of pressure relief;

[0059] After the pressure relief of the impact gas in the cabinet 1 is completed, the maintenance personnel pushes the sliding plate 502 downward by pressing the corresponding pressing plate 501 downward and the sliding plate 502 slides with the inner wall of the installation cylinder 401. The sliding plate 502 pushes the corresponding limiting block 409 to move closer to the fixed guide column 404 by sliding with the first inclined surface 504 and the second inclined surface 505, thereby releasing the engagement between the limiting block 409 and the limiting hole 403, thereby releasing the fixed position of the movable ring 405.

[0060] At the same time, since the position of the second lifting ring 413 is relatively fixed at this time, the limit block 409 pushes the first lifting ring 411 to move upward by approaching the fixed guide column 404 and being hinged to the hinge rod 410, and the distance between the first lifting ring 411 and the second lifting ring 413 is reduced, and the spring 415 is stressed and contracts; at this time, the position of the movable ring 405 is in a movable state, and the spring 415 will extend downward and push the first lifting ring 411 to move downward, and since the position of the limit block 409 is relatively fixed at this time, the angle between the hinge rod 410 and the movable ring 405 is fixed, and the first lifting ring 411 and the hinge rod 410 are fixed. The positional relationship between 410 and the limit block 409 is relatively fixed. The first lifting ring 411 pushes the movable ring 405 to move downward synchronously by being hinged to the hinge rod 410 and the limit block 409 slidingly cooperates with the movable ring 405. The movable ring 405 moves down to its original position through the action of its own gravity and the sliding cooperation of the slider 406 and the side groove 402, which can realize the reset of the safety pressure relief component 4, facilitate subsequent pressure relief needs, increase the service life of the safety pressure relief component 4, avoid the problem that the existing pressure relief mechanism can only be used once, reduce the tedious operation of replacing the pressure relief mechanism, reduce costs, and improve work efficiency.

[0061] The number of the sliding plates 502 is consistent with the number of the limit blocks 409, so as to facilitate the displacement of each limit block 409. The inclination angle of the first inclined surface 504 is consistent with the inclination angle of the second inclined surface 505, so as to facilitate the movable contact between the first inclined surface 504 and the second inclined surface 505.

[0062] A connecting ring 503 is connected between several sliding plates 502 located inside the mounting tube 401. The connecting ring 503 can limit the lifting distance of the pressing plate 501 and the sliding plate 502, preventing the sliding plate 502 from sliding out of the mounting tube 401, thereby improving the stability of the reset assembly 5.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-voltage switchgear with a fault detection function, comprising a cabinet body, wherein a plurality of chambers are provided inside the cabinet body, wherein the plurality of chambers are respectively configured as a busbar chamber, a trolley chamber, a cable chamber, and a relay instrument chamber ... The top of the inner side of the cabinet is provided with mounting plates corresponding to the busbar room, the trolley room, the cable room and the relay instrument room respectively. The mounting plates are provided with a plurality of through holes and further include: Safety pressure relief components, wherein a plurality of the safety pressure relief components are provided on the mounting plate, and the safety pressure relief components correspond to the through holes; A reset component, the reset component being arranged on the safety pressure relief component; A mesh plate is provided on the top of the cabinet and is movably sleeved on the outside of the safety pressure relief assembly; A fault detection module is arranged on the inner wall of the cabinet and above the mesh plate.

2. The high-voltage switchgear with fault detection function according to claim 1, characterized in that: The safety pressure relief assembly includes a mounting tube arranged on the mounting plate, the top of the through-hole being movably engaged with the mesh plate, the bottom of the mounting tube being set as an opening, the opening corresponding to the through-hole, a side through-slot in the vertical direction being opened circumferentially on the side wall of the mounting tube, a limiting hole located between two adjacent side through-slots being circumferentially provided on the upper part of the side wall of the mounting tube, a fixed guide post being connected at the inner center of the mounting tube, a movable ring being movably provided inside the mounting tube and sleeved on the outer side of the fixed guide post, a plurality of sliders being slidably engaged with the side through-slots being circumferentially provided on the outer wall of the movable ring, a mounting ring being provided on the movable ring, a plurality of guide holes being distributed circumferentially on the mounting ring, the guide holes corresponding to the limiting holes, a plurality of limit blocks being slidably distributed on the movable ring, the ends of the limit blocks away from each other passing through the guide holes and movably abutting against the inner wall of the mounting tube, a first lifting ring being movably sleeved on the outer side of the fixed guide post, the top of the limit block being hinged to the outer wall of the first lifting ring through a hinge rod, and a buffer module movably connected to the first lifting ring being sleeved on the outer side of the fixed guide post.

3. The high-voltage switchgear with fault detection function according to claim 2, characterized in that: The buffer module includes a second lifting ring and a third lifting ring that are movably mounted on the outside of the fixed guide column. The second lifting ring and the third lifting ring are respectively located on the upper and lower sides of the first lifting ring. The second lifting ring and the third lifting ring are connected by a plurality of guide rods that slide with the first lifting ring. A spring mounted on the outside of the guide rod is connected between the second lifting ring and the first lifting ring.

4. The high-voltage switchgear with fault detection function according to claim 2, characterized in that: The number of the side through grooves is consistent with the number of the limiting holes, the number of the side through grooves is consistent with the number of the sliding blocks, and the number of the limiting blocks is consistent with the number of the limiting holes.

5. The high-voltage switchgear with fault detection function according to claim 4, characterized in that: The number of the side through grooves is set to six.

6. The high-voltage switchgear with fault detection function according to claim 2, characterized in that: A tapered surface is provided on one end of the movable ring close to the through hole.

7. The high-voltage switchgear with fault detection function according to claim 2, characterized in that: The reset assembly includes a pressing plate movably arranged on the top of the outer side of the mounting tube, and a plurality of sliding plates are distributed circumferentially at the bottom of the pressing plate. The end of the sliding plate away from the pressing plate passes through the top of the mounting tube and slides with the inner wall of the mounting tube. The end of the sliding plate away from the pressing plate is provided with a first inclined surface, and the end of the limit block close to the inner wall of the mounting tube is provided with a second inclined surface, and the second inclined surface is movably contacted with the first inclined surface.

8. The high-voltage switchgear with fault detection function according to claim 7, characterized in that: The number of the sliding plates is consistent with the number of the limiting blocks.

9. The high-voltage switchgear with fault detection function according to claim 7, characterized in that: The inclination angle of the first inclined surface is consistent with the inclination angle of the second inclined surface.

10. The high-voltage switchgear with fault detection function according to claim 7, characterized in that: A connecting ring is connected between the plurality of sliding plates located on the inner side of the installation cylinder.

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