Fault testing device for SF6 column type circuit breaker

Abstract

The invention provides a fault testing device for an SF6 column type circuit breaker, and relates to the technical field of circuit breaker testing equipment.The fault testing device comprises a rack, a bearing plate is provided with a guide frame, the guide frame is provided with a transverse plate, the transverse plate is provided with a first rotary column and a second rotary column, and the bottom of the bearing plate is symmetrically provided with a first air cylinder and a second air cylinder which are obliquely arranged; a first infrared leak detector and a second infrared leak detector are fixedly installed at the ends of piston rods of the first air cylinder and the second air cylinder respectively, an overturning frame is hinged to the bottom of the supporting frame, a wheel carrying disc is installed on the inner side of the overturning frame, a driving gear and a driven gear are installed in the wheel carrying disc, the driven gear is connected with a Z-shaped rod, and a gas leak detector is fixedly sleeved with an annular plate at the bottom of the Z-shaped rod. According to the invention, on the premise of electrification, all-directional sealing performance testing can be carried out on the porcelain bushing, so that the single-time testing time of testers can be shortened, the testers can be prevented from being in contact with the porcelain bushing, the safety guarantee degree of the whole device is improved, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker testing equipment, and in particular discloses a fault testing device for an SF6 column type circuit breaker. Background Art

[0002] SF6 column circuit breaker is a high-voltage electrical appliance, mainly used for the protection and control of power transmission and distribution networks. SF6 column circuit breaker can use sulfur hexafluoride gas as arc extinguishing medium and insulating medium. When SF6 column circuit breaker breaks the current, the winding is automatically connected to the circuit by the arc, generating a transverse or longitudinal magnetic field, causing the arc to rotate along the center of the contact; when the current passes through zero, the arc is extinguished. SF6 column circuit breaker is widely used in power grids of various voltage levels, especially for high-voltage and large-capacity power systems. It is usually fixedly installed on outdoor support columns. SF6 column circuit breaker is connected to the inlet and outlet lines of the distribution station, and can be directly used to cut off or connect the inlet and outlet currents to protect the safety of equipment in the distribution station.

[0003] The SF6 column circuit breaker is equipped with a porcelain sleeve for storing sulfur hexafluoride gas; the porcelain body is an integral structure, generally made of high-aluminum material, and the flange is made of high-strength cast aluminum alloy or hot-dip galvanized ductile iron. The upper and lower equalizing rings are installed on both ends of the porcelain sleeve through the flange, and the flange can be bonded with silicate cement adhesive as a medium to ensure its connection strength and airtightness. During the production and manufacturing process of the SF6 column circuit breaker, sulfur hexafluoride gas needs to be passed into the interior of the porcelain sleeve first, and the equalizing rings at both ends are assembled; after the porcelain sleeve is assembled, the operator needs to test the sealing of the porcelain sleeve to effectively ensure trouble-free operation of the porcelain sleeve.

[0004] The invention with application announcement number: CN114199467A discloses a SF6 circuit breaker rubber seal ring air tightness test device, which is provided with a tightness test box, a water tank, a fixed bracket and a gas recovery system. The above prior art can test the airtightness of the sealed connection of the SF6 circuit breaker by covering it with water flow, so as to determine whether there is leakage of SF6 gas. The above prior art adopts the fluid measurement method, which is also the most popular method for measuring airtightness. In the actual testing process, in order to improve the accuracy of the SF6 column circuit breaker test, most of the tests need to be carried out under the premise of power on. If the above-mentioned prior art test equipment is still used; on the one hand, the tester needs to completely cover the surface and edge of the SF6 column circuit breaker porcelain sleeve with fluid, and use optical devices such as magnifying glasses to assist in observation, so that the tester needs a longer single test operation time; on the other hand, if there is leakage on the surface and edge of the porcelain sleeve, it is very easy to cause electric shock under the premise of power on, which may cause irreversible structural damage to the porcelain sleeve at the least, and may cause production accidents at the worst, causing burns and damage to the tester's body, thereby causing immeasurable losses to the company. Summary of the invention

[0005] In view of the problems that the testing operation time is long and the safety assurance is low during the current testing process of the porcelain sleeve of the SF6 column type circuit breaker, the present invention provides a fault testing device for the SF6 column type circuit breaker.

[0006] To solve the above problems, the present invention provides the following technical solutions: A fault testing device for SF6 column type circuit breaker, comprising a bench, wherein a vertically lifting load plate is arranged in the bench, a guide frame is fixedly installed on the load plate, a horizontal plate for horizontal sliding is arranged on the guide frame, a rotatable first rotating column and a second rotating column are arranged on the horizontal plate, the first rotating column and the second rotating column are used to carry the porcelain sleeve of the SF column type circuit breaker, a top plate which is fastened to the bench is arranged above the horizontal plate, a loading plate is fixedly installed at the bottom of the top plate, a first cylinder and a second cylinder which are obliquely arranged are symmetrically installed at the bottom of the loading plate, and the piston rod ends of the first cylinder and the second cylinder are respectively fixedly installed with a first red An external leak detector and a second infrared leak detector, the probe of the first infrared leak detector faces the head of the porcelain sleeve, and the probe of the second infrared leak detector faces the outer wall of the porcelain sleeve; a support frame is fixedly installed on the top side of the stand, a flip frame is hinged on the bottom of the support frame, a load wheel disc is fixedly installed on the inner side of the flip frame, a driving gear and a driven gear that mesh with each other are installed inside the load wheel disc, the driving gear is connected to a rotatable driving shaft, the driven gear is connected to a Z-shaped rod, a ring plate is fixedly connected to the bottom of the Z-shaped rod, a gas leak detector is fixedly mounted inside the ring plate, and the probe rod port of the gas leak detector faces the tail of the porcelain sleeve.

[0007] Preferably, a partition is fixedly installed inside the platform, a third cylinder is fixedly installed on the bottom of the partition, the piston rod of the third cylinder is arranged vertically upward, the end of the piston rod of the third cylinder is fastened to the supporting plate, a support column is fixedly installed between the partition and the top plate, a plurality of sleeves are fixedly installed inside the partition, a sliding column with a slidable fit is arranged inside the sleeve, and the top end of the sliding column is fastened to the supporting plate.

[0008] Preferably, a plurality of symmetrically distributed columns are fixedly mounted on the carrier plate, the columns are arranged on the outside of the guide frame, plug connectors are fixedly mounted on the tops of the columns, a plurality of symmetrically distributed plug sleeves are fixedly mounted on the bottom of the loading plate, the plug sleeves are arranged on the outside of the first cylinder and the second cylinder, and the plug connectors are plugged into the inner cavities of the plug sleeves.

[0009] Preferably, the guide frame is arranged on the outer side of the platform near one end of the flip frame, a rotating rod is rotatably installed in the guide frame, a first motor is arranged on the side of the guide frame, a first pulley is fixedly mounted on the end of the output shaft of the first motor, a second pulley is fixedly mounted on the end of the rotating rod, and a first belt for transmission is arranged between the first pulley and the second pulley; a slider is mounted on the outside of the rotating rod, the rotating rod is rotatably matched with the slider, both sides of the slider are slidably matched with the inner wall of the guide frame, and the slider is tightly connected to the cross plate.

[0010] Preferably, a vertical rod is fixedly installed on the horizontal plate, a horizontal rod is fixedly installed on the top of the vertical rod, a first receiving rod and a second receiving rod are slidably mounted inside the first rotating column and the second rotating column respectively, and the ends of the first receiving rod and the second receiving rod are fixedly mounted on the outer wall of the horizontal rod; baffles are provided on the outer sides of the first rotating column and the second rotating column, the baffles are fastened to the horizontal plate, and the arrangement height of the baffles is higher than the first rotating column and the second rotating column.

[0011] Preferably, the bottom of the loading plate is symmetrically installed with a first cylinder seat and a second cylinder seat, the first cylinder and the second cylinder are fixedly installed inside the first cylinder seat and the second cylinder seat respectively, the inner side of the first cylinder seat and the second cylinder seat is provided with a pulley seat, the pulley seat is hoisted at the bottom of the loading plate, and a pulley is rotatably installed at the bottom of the pulley seat, and the pulley is arranged parallel to the first rotating column and the second rotating column.

[0012] Preferably, a hydraulic rod is hinged on the inner side of the support frame through a pin, and the telescopic end of the hydraulic rod is hinged on a first hinged seat through a pin, and the first hinged seat is fixedly mounted on the outer bottom end of the flip frame; a second hinged seat is fixedly mounted on the bottom of the support frame, and the second hinged seat is hinged to the outer top end of the flip frame through a pin.

[0013] Preferably, a support beam is fixedly installed on the inner side of the flip frame, a second motor is fixedly installed on the top of the support beam, a third pulley is fixedly mounted on the end of the output shaft of the second motor, a fourth pulley is fixedly mounted on the outside of the drive shaft, and a second belt for transmission is arranged between the third pulley and the fourth pulley.

[0014] Preferably, a first stabilizing frame and a second stabilizing frame are fixedly installed at the bottom of the support beam, and the first stabilizing frame and the second stabilizing frame are respectively tightly connected to the inner and outer sides of the wheel-carrying disc, and circular grooves are provided on the first stabilizing frame and the second stabilizing frame, and the Z-shaped rod is rotatably matched with the circular groove of the first stabilizing frame, and the driving shaft is rotatably matched with the circular groove of the second stabilizing frame.

[0015] Preferably, a concave cavity is provided on the outer side of the wheel carrier, the driving gear and the driven gear are arranged in the concave cavity, the outer diameter of the wheel carrier is larger than the vertical height of the Z-shaped rod, and the probe rod length of the gas leak detector is smaller than the vertical height of the Z-shaped rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The first rotating column and the second rotating column in the present invention can be used to carry the porcelain sleeve without affecting its rotation on the horizontal plate. By setting the bearing plate, the porcelain sleeve can be vertically lifted and lowered in the stand, so that the porcelain sleeve gradually approaches the first infrared leak detector and the second infrared leak detector, so that the first infrared leak detector performs a tightness test on the head connection of the porcelain sleeve, and the second infrared leak detector performs a tightness test on the outer wall of the porcelain sleeve. At the same time, during the rotation of the porcelain sleeve, the Z-shaped rod can drive the gas leak detector to rotate around the periphery of the tail of the porcelain sleeve, so that the gas leak detector performs a tightness test on the tail connection of the porcelain sleeve, thereby completing the fault test of the porcelain sleeve. The present invention can perform a full range of tightness tests on the porcelain sleeve under the premise of power on, improves the fluid testing method adopted in the prior art, can reduce the single test time of the tester, improve the test efficiency, and speed up the test process; 2. The present invention can control the distance between the first infrared leak detector, the second infrared leak detector and the porcelain sleeve by setting the matching structure of the first cylinder and the second cylinder, so that the first infrared leak detector and the second infrared leak detector can perform airtightness test on the porcelain sleeve in all directions, and the present invention can provide a slider that can slide along the inner wall of the guide frame so that the porcelain sleeve can be transported horizontally in the stand, so that the first infrared leak detector and the second infrared leak detector have sufficient time to perform airtightness test on the outer wall of the porcelain sleeve, further improving the accuracy and reliability of the test results; 3. The fault testing device in the present invention can operate under the remote control of the tester, so that the tester can maintain a corresponding safety distance from the porcelain sleeve in the energized state. On the one hand, it can protect the porcelain sleeve and avoid structural damage to the outer wall of the porcelain sleeve caused by accidental touch operation. On the other hand, it can also improve the safety of the overall device, avoid causing production accidents, and protect the body of the tester from burns and damage, thereby eliminating safety hazards. Therefore, it has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a schematic diagram of the overall structure of the device of the present invention; Figure 2 It is a schematic diagram of the matching structure of the sleeve and the sliding column of the present invention; Figure 3 It is a schematic diagram of the rotating rod installation structure of the present invention; Figure 4 It is a schematic diagram of the coordination structure of the vertical rod and the horizontal rod of the present invention; Figure 5 It is a schematic diagram of the installation structure of the first infrared leak detector and the second infrared leak detector of the present invention; Figure 6 It is a schematic diagram of the hydraulic rod installation structure of the present invention; Figure 7 It is a schematic diagram of the installation structure of the wheel carrier of the present invention; Figure 8 It is a schematic diagram of the installation structure of the driving gear and the driven gear of the present invention; In the figure: 1. stand, 2. bearing plate, 3. guide frame, 4. cross plate, 5. first rotating column, 6. second rotating column, 7. top plate, 8. loading plate, 9. first cylinder, 10. second cylinder, 11. first infrared leak detector, 12. second infrared leak detector, 13. support frame, 14. flip frame, 15. wheel plate, 16. driving gear, 17. driven gear, 18. driving shaft, 19. Z-bar, 20. ring plate, 21. gas leak detector, 22. partition, 23. third cylinder, 24. support column, 25. sleeve, 26. sliding column, 27. column, 28. plug connector, 29. Insert cylinder, 30. Rotating rod, 31. First motor, 32. First pulley, 33. Second pulley, 34. First belt, 35. Slider, 36. Vertical rod, 37. Cross rod, 38. First receiving rod, 39. Second receiving rod, 40. Baffle, 41. First cylinder seat, 42. Second cylinder seat, 43. Pulley seat, 44. Pulley, 45. Hydraulic rod, 46. First articulated seat, 47. Second articulated seat, 48. Support beam, 49. Second motor, 50. Third pulley, 51. Fourth pulley, 52. Second belt, 53. First stabilizing frame, 54. Second stabilizing frame, 55. Concave cavity. DETAILED DESCRIPTION

[0018] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] This specific embodiment provides a fault testing device for SF6 column type circuit breaker, such as Figure 1-Figure 8As shown; it includes a test bench 1, and a plurality of footrests are installed at the bottom of the test bench 1. The footrests and the test bench 1 can be connected by bolts, and the distance between the test bench 1 and the footrests can be adjusted by screwing the bolts, so as to ensure that the device can be stably placed in the test operation area. The test bench 1 is provided with two layers, the bottom layer is the main supporting structure, and the top layer is the bearing structure; a partition 22 is fixedly installed inside the test bench 1, and the partition 22 is arranged between the top and bottom layers of the test bench 1, and a third cylinder 23 is fixedly installed at the bottom of the partition 22, and the piston rod of the third cylinder 23 is arranged vertically upward, and the cylinder body of the third cylinder 23 is fastened to the partition 22, and the end of the piston rod of the third cylinder 23 can pass through the partition 22 and be arranged on the top layer of the test bench 1, and the end of the piston rod of the third cylinder 23 is fastened to the bearing plate 2, and the top of the top layer of the test bench 1 is fixedly installed with a top plate 7 A support column 24 is fixedly installed between the partition 22 and the top plate 7, and four sleeves 25 are fixedly installed in the partition 22. The four sleeves 25 are respectively arranged at the four corners of the top of the third cylinder 23, and each sleeve 25 is provided with a sliding column 26 for sliding cooperation. The outer wall of the sliding column 26 is slidingly cooperated with the inner wall of the sleeve 25, and the top of the sliding column 26 is tightly connected to the supporting plate 2; by setting the third cylinder 23, the supporting plate 2 can be vertically lifted and lowered in the platform 1, and by setting the matching structure of the sliding column 26 and the sleeve 25, the bearing force of the piston rod of the third cylinder 23 can be shared, thereby ensuring the stable operation of the third cylinder 23.

[0020] Four symmetrically distributed columns 27 are fixedly installed on the bearing plate 2, and the four columns are respectively arranged on the inner side of the supporting column 24, and the tops of the columns 27 are fixedly installed with plug connectors 28; a loading plate 8 is fixedly installed on the bottom of the top plate 7, and the loading plate 8 is arranged above the bearing plate 2, and four symmetrically distributed plug sleeves 29 are fixedly installed on the bottom of the loading plate 8, and the plug sleeves 29 correspond to the columns 27 one by one, and the plug connectors 28 are plugged into the inner cavity of the plug sleeves 29; when the bearing plate 2 is vertically lifted and lowered in the stand 1, the columns 27 can limit the lifting height of the bearing plate 2, thereby ensuring that the distance between the bearing plate 2 and the loading plate 8 can accommodate the porcelain sleeve of the SF6 column circuit breaker.

[0021] A guide frame 3 is fixedly mounted on the carrier plate 2. The guide frame 3 is arranged on the inner side of the column 27. One end of the guide frame 3 is arranged on the outer side of the platform 1, and the other end of the guide frame 3 is arranged inside the platform 1. A rotating rod 30 is rotatably mounted in the guide frame 3. The rotating rod 30 is arranged perpendicularly to the piston rod of the third cylinder 23. A first motor 31 is arranged on the side of the guide frame 3. The body of the first motor 31 is tightly connected to the carrier plate 2. The output shaft of the first motor 31 is arranged parallel to the rotating rod 30. A first pulley 32 is fixedly mounted on the end of the output shaft of the first motor 31. A second pulley 33 is fixedly mounted on the end of the rotating rod 30. A first belt 34 for transmission is arranged between the first pulley 32 and the second pulley 33. By setting the first pulley 32 and the second pulley 33 to cooperate with the rotating structure, the first motor 31 can drive the rotating rod 30 to rotate in the guide frame 3. The outside of the rotating rod 30 is provided with a slider 35, and the slider 35 is arranged inside the guide frame 3. The rotating rod 30 and the slider 35 are rotatably matched, and the two sides of the slider 35 are slidably matched with the inner wall of the guide frame 3. When the rotating rod 30 rotates, it can drive the slider 35 to move linearly in the guide frame 3, so as to adjust the arrangement position of the slider 35.

[0022] A horizontal plate 4 is fixedly installed on the top of the slider 35, and two sliders 35 are provided. Two horizontal plates 4 are provided. A vertical rod 36 is fixedly installed on each horizontal plate 4, and a horizontal rod 37 is fixedly installed on the top of the vertical rod 36; a rotatable first rotating column 5 and a second rotating column 6 are provided above the two horizontal plates 4, and a first receiving rod 38 and a second receiving rod 39 are slidably mounted inside the first rotating column 5 and the second rotating column 6, respectively, and the end portions of the first receiving rod 38 and the second receiving rod 39 are fixedly mounted on the outer walls of the two horizontal rods 37 respectively. By setting the first rotating column 5 and the second rotating column 6, it is convenient to carry the porcelain sleeve of the SF6 column circuit breaker without affecting the rotation of the porcelain sleeve on the cross plate 4; baffles 40 are provided on the outer sides of the first rotating column 5 and the second rotating column 6, and the baffles 40 are fastened to the cross plate 4, and the arrangement height of the baffles 40 is higher than the first rotating column 5 and the second rotating column 6; thereby preventing the porcelain sleeve from falling off the first rotating column 5 and the second rotating column 6 when the cross bar 37 rotates, thereby improving the stability of the overall device.

[0023] A first cylinder seat 41 and a second cylinder seat 42 are symmetrically mounted at the bottom of the loading plate 8, and a first cylinder 9 and a second cylinder 10 are respectively mounted in the first cylinder seat 41 and the second cylinder seat 42, and the piston rods of the first cylinder 9 and the second cylinder 10 are respectively facing the front end and the rear end of the porcelain sleeve; a first infrared leak detector 11 and a second infrared leak detector 12 are respectively fixedly mounted on the piston rod ends of the first cylinder 9 and the second cylinder 10, and the probe of the first infrared leak detector 11 faces the head of the porcelain sleeve, and the probe of the second infrared leak detector 12 faces the outer wall of the porcelain sleeve; the first infrared leak detector 11 and the second infrared leak detector 12 can respectively perform real-time imaging of the head and the outer wall of the porcelain sleeve by infrared imaging, so as to facilitate the testing of the tightness of the connection between the head of the porcelain sleeve and the upper equalizing ring and the outer wall of the porcelain sleeve.

[0024] Among them, a pulley seat 43 is arranged on the inner side of the first cylinder seat 41 and the second cylinder seat 42, and the pulley seat 43 is hoisted at the bottom of the loading plate 8. A pulley 44 is rotatably installed at the bottom of the pulley seat 43, and the pulley 44 is arranged parallel to the first rotating column 5 and the second rotating column 6; the pulley 44 can be in sliding contact with the outer wall of the porcelain sleeve, and can also be used to fix the porcelain sleeve, thereby ensuring that the porcelain sleeve can be stably arranged in the gap between the loading plate 8 and the bearing plate 2.

[0025] A support frame 13 is fixedly installed on the top side of the platform 1, and the support frame 13 is arranged on the side of the guide frame 3 that protrudes out of the platform 1; a flip frame 14 is hinged on the bottom of the support frame 13, and a hydraulic rod 45 is hinged on the inner side of the support frame 13 through a pin shaft, and two hydraulic rods 45 are provided and symmetrically arranged, and the telescopic ends of the two hydraulic rods 45 are hinged with a first hinge seat 46 through a pin shaft, and the first hinge seat 46 is fixedly installed on the outer bottom end of the flip frame 14; two symmetrically arranged second hinge seats 47 are fixedly installed on the bottom of the support frame 13, and the two second hinge seats 47 are hinged to the outer top end of the flip frame 14 through a pin shaft; by arranging the hydraulic rod 45, it is convenient to drive the flip frame 14 to flip at the bottom of the support frame 13.

[0026] A support beam 48 is fixedly installed on the inner side of the flip frame 14, and a second motor 49 is fixedly installed on the top of the support beam 48. The output shaft of the second motor 49 faces the outer side of the flip frame 14, and a third pulley 50 is fixedly sleeved on the end of the output shaft of the second motor 49. A first stabilizing frame 53 and a second stabilizing frame 54 are fixedly installed on the bottom of the support beam 48. A wheel-carrying disc 15 is arranged on the inner side of the first stabilizing frame 53 and the second stabilizing frame 54. The first stabilizing frame 53 and the second stabilizing frame 54 are respectively fastened to the inner and outer sides of the wheel-carrying disc 15, so that the wheel-carrying disc 15 is fixedly installed on the bottom of the support beam 48; a concave cavity 55 is arranged on the outer side of the wheel-carrying disc 15, and a driving gear 16 and a driven gear 17 are arranged in the concave cavity 55. The driven gear 17 is arranged at the center of the concave cavity 55, and the driving gear 16 is arranged at the edge of the concave cavity 55. The driving gear 16 and the driven gear 17 are meshed with each other for transmission.

[0027] The driving gear 16 is connected to a drive shaft 18, and a fourth pulley 51 is fixedly mounted on the outside of the drive shaft 18. A second belt 52 for transmission is arranged between the third pulley 50 and the fourth pulley 51. The second motor 49 can drive the drive shaft 18 to rotate together with the driving gear 16 through the third pulley 50 and the fourth pulley 51. The driven gear 17 is connected to a Z-shaped rod 19. The first and second stable frames 53 and 54 are both provided with circular grooves, and bearings are fixedly installed in the circular grooves. The Z-shaped rod 19 and the drive shaft 18 are respectively mounted inside the bearings, so that the first and second stable frames 53 and 54 can effectively support the Z-shaped rod 19 and the drive shaft 18 to rotate; the Z-shaped rod 19 is arranged on the inner side of the flip frame 14 close to the platform 1, and the Z-shaped rod 19 can rotate under the drive of the driven gear 17.

[0028] A ring plate 20 is fixedly connected to the bottom of the Z-shaped rod 19, and a gas leak detector 21 is fixedly mounted inside the ring plate 20, with the probe rod port of the gas leak detector 21 facing the tail of the porcelain sleeve; in addition, the outer diameter of the wheel carrier 15 is larger than the vertical height of the Z-shaped rod 19, and the probe rod length of the gas leak detector 21 is smaller than the vertical height of the Z-shaped rod 19.

[0029] The working principle of the present invention is as follows: before the fault test of the SF6 column circuit breaker, the porcelain sleeve can be stably placed above the first rotating column 5 and the second rotating column 6, so that the tail of the porcelain sleeve faces the turning frame 14. Under the driving action of the first motor 31, the slider 35 slides in the guide frame 3, so that the porcelain sleeve is transported to the inside of the stand 1; during this period, the first infrared leak detector 11 and the second infrared leak detector 12 can respectively perform leak tests on the outer wall of the porcelain sleeve and capture real-time images to the terminal device. When the porcelain sleeve completely enters the inside of the stand 1, the hydraulic rod 45 can drive the turning frame 14 to turn over, so that the turning frame 14 turns over and is arranged vertically with the support frame 13; at the same time, the piston rod of the third cylinder 23 can drive the bearing plate 2 to rise vertically in the stand 1, and the rising operation stops when the plug connector 28 is plugged into the plug sleeve 29; at this time, the pulley 44 in the pulley seat 43 can contact the outer wall of the porcelain sleeve. The tester can energize the porcelain sleeve and rotate the porcelain sleeve, and the porcelain sleeve can rotate above the first rotating column 5 and the second rotating column 6. The first infrared leak detector 11 can perform a leak test on the head of the porcelain sleeve and the outer wall of the porcelain sleeve, thereby ensuring the accuracy of the test. At the same time, the second motor 49 can rotate the drive shaft 18, and under the rotation of the driving gear 16 and the driven gear 17, the Z-shaped rod 19 rotates along the center of the wheel carrier 15; at this time, the probe rod port of the gas leak detector 21 can rotate along the connection between the tail of the porcelain sleeve and the lower equalizing ring, thereby performing a leak test on the connection at the tail of the porcelain sleeve.

[0030] The present invention can perform a comprehensive airtightness test on the porcelain sleeve under the premise of power on, which improves the fluid testing method adopted in the prior art. It can not only reduce the single test time of the tester, but also avoid the tester from close contact with the porcelain sleeve in the power-on state. On the one hand, it can protect the porcelain sleeve, and on the other hand, it can also improve the safety of the overall device, thereby eliminating safety hazards. In summary, the present invention has a very broad application prospect.

[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fault testing device for SF6 column type circuit breaker, comprising a stand (1), characterized in that: The stand (1) is provided with a vertically lifting load-bearing plate (2), a guide frame (3) is fixedly mounted on the load-bearing plate (2), a horizontally sliding horizontal plate (4) is arranged on the guide frame (3), a rotatable first rotating column (5) and a second rotating column (6) are arranged on the horizontal plate (4), the first rotating column (5) and the second rotating column (6) are used to carry the porcelain sleeve of the SF6 column type circuit breaker, a top plate (7) which is fastened to the stand (1) is arranged above the horizontal plate (4), a loading plate (8) is fixedly mounted at the bottom of the top plate (7), a first cylinder (9) and a second cylinder (10) which are arranged obliquely are symmetrically mounted at the bottom of the loading plate (8), a first infrared leak detector (11) and a second infrared leak detector (12) are fixedly mounted at the ends of the piston rods of the first cylinder (9) and the second cylinder (10), respectively, The probe of the first infrared leak detector (11) faces the head of the porcelain sleeve, and the probe of the second infrared leak detector (12) faces the outer wall of the porcelain sleeve; a support frame (13) is fixedly mounted on the top side of the stand (1), a flip frame (14) is hingedly mounted on the bottom of the support frame (13), a wheel carrier (15) is fixedly mounted on the inner side of the flip frame (14), a driving gear (16) and a driven gear (17) that mesh with each other are mounted inside the wheel carrier (15), the driving gear (16) is connected to a rotatable driving shaft (18), the driven gear (17) is connected to a Z-shaped rod (19), a ring plate (20) is fixedly mounted on the bottom of the Z-shaped rod (19), a gas leak detector (21) is fixedly mounted inside the ring plate (20), and a probe rod port of the gas leak detector (21) faces the tail of the porcelain sleeve.

2. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: A partition (22) is fixedly installed inside the platform (1), a third cylinder (23) is fixedly installed at the bottom of the partition (22), the piston rod of the third cylinder (23) is arranged vertically upward, the end of the piston rod of the third cylinder (23) is tightly connected to the bearing plate (2), a support column (24) is fixedly installed between the partition (22) and the top plate (7), a plurality of sleeves (25) are fixedly installed inside the partition (22), a sliding column (26) is slidably arranged inside the sleeve (25), and the top end of the sliding column (26) is tightly connected to the bearing plate (2).

3. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: A plurality of symmetrically distributed upright posts (27) are fixedly mounted on the bearing plate (2), the upright posts (27) are arranged outside the guide frame (3), and plug connectors (28) are fixedly mounted on the tops of the upright posts (27). A plurality of symmetrically distributed plug sleeves (29) are fixedly mounted on the bottom of the loading plate (8), the plug sleeves (29) are arranged outside the first cylinder (9) and the second cylinder (10), and the plug connectors (28) are plugged into the inner cavities of the plug sleeves (29).

4. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: The guide frame (3) is arranged at one end close to the turning frame (14) on the outside of the platform (1); a rotating rod (30) is rotatably mounted inside the guide frame (3); a first motor (31) is arranged on the side of the guide frame (3); a first pulley (32) is fixedly mounted on the end of the output shaft of the first motor (31); a second pulley (33) is fixedly mounted on the end of the rotating rod (30); a first belt (34) for transmission is arranged between the first pulley (32) and the second pulley (33); a slider (35) is mounted on the outside of the rotating rod (30); the rotating rod (30) and the slider (35) are rotatably matched; two sides of the slider (35) are slidably matched with the inner wall of the guide frame (3); and the slider (35) is tightly connected to the cross plate (4).

5. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: A vertical rod (36) is fixedly mounted on the horizontal plate (4), a horizontal rod (37) is fixedly mounted on the top of the vertical rod (36), a first receiving rod (38) and a second receiving rod (39) are slidably mounted inside the first rotating column (5) and the second rotating column (6), respectively, and the ends of the first receiving rod (38) and the second receiving rod (39) are fixedly mounted on the outer wall of the horizontal rod (37); a baffle (40) is arranged on the outer side of the first rotating column (5) and the second rotating column (6), and the baffle (40) is tightly connected to the horizontal plate (4), and the arrangement height of the baffle (40) is higher than that of the first rotating column (5) and the second rotating column (6).

6. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: A first cylinder seat (41) and a second cylinder seat (42) are symmetrically mounted at the bottom of the loading plate (8); the first cylinder (9) and the second cylinder (10) are fixedly mounted inside the first cylinder seat (41) and the second cylinder seat (42), respectively; a pulley seat (43) is arranged inside the first cylinder seat (41) and the second cylinder seat (42); the pulley seat (43) is hoisted at the bottom of the loading plate (8); a pulley (44) is rotatably mounted at the bottom of the pulley seat (43); the pulley (44) is arranged parallel to the first rotating column (5) and the second rotating column (6).

7. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: A hydraulic rod (45) is hingedly mounted on the inner side of the support frame (13) via a pin shaft, and a first hinge seat (46) is hingedly mounted on the telescopic end of the hydraulic rod (45) via a pin shaft, and the first hinge seat (46) is fixedly mounted on the outer bottom end of the flip frame (14); a second hinge seat (47) is fixedly mounted on the bottom of the support frame (13), and the second hinge seat (47) is hingedly connected to the outer top end of the flip frame (14) via a pin shaft.

8. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: A support beam (48) is fixedly mounted on the inner side of the turning frame (14), a second motor (49) is fixedly mounted on the top of the support beam (48), a third pulley (50) is fixedly mounted on the end of the output shaft of the second motor (49), a fourth pulley (51) is fixedly mounted on the outside of the driving shaft (18), and a second belt (52) for transmission is arranged between the third pulley (50) and the fourth pulley (51).

9. A fault testing device for SF6 column type circuit breaker according to claim 8, characterized in that: A first stabilizing frame (53) and a second stabilizing frame (54) are fixedly mounted on the bottom of the support beam (48); the first stabilizing frame (53) and the second stabilizing frame (54) are respectively fastened to the inner and outer sides of the wheel carrier (15); a circular groove is provided on the first stabilizing frame (53) and the second stabilizing frame (54); the Z-shaped rod (19) is rotatably engaged with the circular groove of the first stabilizing frame (53); and the driving shaft (18) is rotatably engaged with the circular groove of the second stabilizing frame (54).

10. A fault testing device for SF6 column type circuit breaker according to claim 1, characterized in that: A concave cavity (55) is provided on the outer side of the wheel carrier (15), and the driving gear (16) and the driven gear (17) are both arranged in the concave cavity (55). The outer diameter of the wheel carrier (15) is greater than the vertical height of the Z-shaped rod (19), and the length of the probe rod of the gas leak detector (21) is less than the vertical height of the Z-shaped rod (19).

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