A fault testing device for SF6 column circuit breaker

Abstract

The application is a kind of fault testing device for SF6 column circuit breaker, which relates to the technical field of circuit breaker testing equipment, comprising a rack, a guide frame is installed on a bearing plate, a cross plate is arranged on the guide frame, a first and a second rotating column are arranged on the cross plate, a first and a second cylinder are symmetrically arranged on the bottom of the bearing plate, a first and a second infrared leak detector are respectively fixedly installed on the piston rod end of the first and the second cylinder, a turnover frame is hingedly arranged on the bottom of the support frame, a load wheel disc is installed on the inner side of the turnover frame, a driving gear and a driven gear are installed in the load wheel disc, a Z-shaped rod is connected to the driven gear, and a gas leak detector is fixedly sleeved in the ring plate at the bottom of the Z-shaped rod. The application can conduct all-round airtightness test on the porcelain sleeve under the premise of power-on, which not only can reduce the single test time of the tester, but also can avoid the tester contacting the porcelain sleeve, improve the safety guarantee degree of the whole device, and eliminate the safety hidden danger.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of circuit breaker testing equipment, and discloses a fault testing device for SF6 column type circuit breakers. BACKGROUND

[0002] The SF6 column type circuit breaker is a high-voltage electric appliance, and is mainly used for protection and control of power transmission and distribution networks; the SF6 column type circuit breaker can use sulfur hexafluoride gas as arc extinguishing medium and insulation medium; when the SF6 column type circuit breaker breaks current, the winding is automatically connected into the circuit by the arc, a transverse or longitudinal magnetic field is generated, and the arc rotates along the center of the contact; when the current is zero, the arc is extinguished. The SF6 column type circuit breaker is widely applied to power grids of various voltage levels, and is particularly suitable for high-voltage and large-capacity power systems; the SF6 column type circuit breaker is usually fixedly installed on an outdoor support column; the SF6 column type circuit breaker is connected with incoming and outgoing lines of a distribution station, and can be directly used for cutting off or connecting incoming and outgoing line currents, thereby protecting the safety of equipment in the distribution station.

[0003] The porcelain sleeve for storing sulfur hexafluoride gas is arranged in the SF6 column type circuit breaker; the porcelain body is of an integral structure, generally adopts high-aluminum material, and the flange plate is made of high-strength cast aluminum alloy or hot-dip galvanized ductile cast iron. The porcelain sleeve is respectively provided with an upper pressure equalizing ring and a lower pressure equalizing ring at two ends through the flange plate; the flange plate can be adhered by silicate cement adhesive as a medium, so that the connection strength and sealing performance are ensured. In the production and manufacturing process of the SF6 column type circuit breaker, the sulfur hexafluoride gas needs to be first introduced into the porcelain sleeve, and the pressure equalizing rings at two ends are assembled; after the porcelain sleeve is assembled, the sealing degree of the porcelain sleeve needs to be detected by an operator, so that the fault-free operation of the porcelain sleeve can be effectively ensured.

[0004] The invention disclosed in application publication No. CN114199467A discloses a SF6 circuit breaker rubber sealing ring air tightness test device, which is provided with a sealing test box, a water tank, a fixing support and a gas recovery system. The prior art can test the sealing degree of the sealing connection of the SF6 circuit breaker by means of water flow covering, so as to judge whether the SF6 gas leaks. The fluid measurement method is adopted in the prior art, which is also the most popular method for measuring sealing degree at present. In actual testing process, in order to improve the accuracy of SF6 column type circuit breaker testing, testing is mostly required under the premise of power-on. If the testing equipment of the prior art is still used, on the one hand, the tester needs to completely cover the fluid to the surface and edge of the porcelain sleeve of the SF6 column type circuit breaker, and needs to use optical devices such as magnifying glasses to assist observation, so that the tester needs a long single testing operation time; on the other hand, if the surface and edge of the porcelain sleeve leak, under the premise of power-on, electric shock is easy to occur, which may cause irreversible structural damage to the porcelain sleeve, and may even cause production accidents and burn the tester, thereby causing immeasurable loss to the enterprise. SUMMARY

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

[0006] To solve the above problems, the invention provides the following technical solutions:

[0007] The utility model provides a kind of fault testing device for SF6 column circuit breaker, including rack, vertically lifting load plate is arranged in the rack, guiding frame is fixedly installed on the load plate, transverse sliding cross plate is arranged in the guiding frame, rotatable first rotating column, second rotating column are arranged on the cross plate, the first rotating column, second rotating column are used to carry the porcelain sleeve of SF column circuit breaker, the top of the cross plate is fixedly connected with the top plate of rack, the bottom of the top plate is fixedly installed with loading plate, the bottom of the loading plate is symmetrically installed with first air cylinder, second air cylinder arranged obliquely, the piston rod end of the first air cylinder, second air cylinder is fixedly installed with first infrared leak detector, second infrared leak detector respectively, the probe of the first infrared leak detector is towards the head of porcelain sleeve, the probe of the second infrared leak detector is towards the outer wall of porcelain sleeve;The top end side of the rack is fixedly installed with support frame, the bottom of the support frame is hinged with turnover frame, load wheel disc is fixedly installed in the inboard of the turnover frame, driving gear, driven gear that are mutually meshed transmission are installed in the inside of the load wheel disc, the driving shaft that can rotate is connected with the driving gear, the driven gear is connected with Z type rod, the bottom of the Z type rod is fixedly connected with ring plate, gas leak detector is fixedly sleeved in the ring plate, the probe rod port of the gas leak detector is towards the tail of porcelain sleeve.

[0008] Preferably, the inside of the rack is fixedly installed with a partition, the bottom of the partition is fixedly installed with a third air cylinder, the piston rod of the third air cylinder is vertically arranged upwards, the end of the piston rod of the third air cylinder is fixedly connected with the load plate, a support column is fixedly installed between the partition and the top plate, a plurality of sleeves are fixedly installed in the partition, a sliding column is slidably arranged in the sleeve, the top end of the sliding column is fixedly connected with the load plate.

[0009] Preferably, a plurality of symmetrically distributed stand columns are fixedly installed on the load plate, the stand columns are arranged on the outside of the guiding frame, a plug-in connector is fixedly installed on the top of each stand column, a plurality of symmetrically distributed plug-in sleeves are fixedly installed on the bottom of the loading plate, the plug-in sleeves are arranged on the outside of the first air cylinder and the second air cylinder, and the plug-in connector is inserted into the inner cavity of the plug-in sleeve.

[0010] Preferably, the guiding frame is arranged on the outside of the rack near one end of the turnover frame, a rotating rod is rotatably installed in the guiding frame, a first motor is arranged on the side of the guiding frame, a first pulley is fixedly sleeved on the output shaft end of the first motor, a second pulley is fixedly sleeved on the end of the rotating rod, and a first belt for transmission is arranged between the first pulley and the second pulley; a sliding block is sleeved on the outside of the rotating rod, the rotating rod and the sliding block are rotatably connected, the sliding block is slidably connected with the inner wall of the guiding frame, and the sliding block is fixedly connected with the cross plate.

[0011] Preferably, a vertical rod is fixedly installed on the horizontal plate, a horizontal rod is fixedly installed at the top end of the vertical rod, first and second receiving rods are respectively slidably sleeved on the inner portions of the first and second rotating columns, and the end portions of the first and second receiving rods are fixedly sleeved on the outer wall of the horizontal rod; the outer sides of the first and second rotating columns are provided with baffles, the baffles are fixedly connected with the horizontal plate, and the arrangement height of the baffles is higher than that of the first and second rotating columns.

[0012] Preferably, first and second cylinder seats are symmetrically installed at the bottom of the loading plate, first and second cylinders are respectively fixedly installed in the first and second cylinder seats, a pulley seat is arranged on the inner side of the first and second cylinder seats, the pulley seat is suspended at the bottom of the loading plate, a pulley is rotatably installed at the bottom of the pulley seat, and the pulley is arranged in parallel with the first and second rotating columns.

[0013] Preferably, a hydraulic rod is hingedly connected to the inner side of the support frame through a pin shaft, a first hinging seat is hingedly connected to the telescopic end of the hydraulic rod through a pin shaft, and the first hinging seat is fixedly installed at the outer bottom end of the turnover frame; a second hinging seat is fixedly installed at the bottom of the support frame, and the second hinging seat is hingedly connected to the outer top end of the turnover frame through a pin shaft.

[0014] Preferably, a support beam is fixedly installed on the inner side of the turnover frame, a second motor is fixedly installed at the top of the support beam, a third belt pulley is fixedly sleeved on the output shaft end of the second motor, a fourth belt pulley is fixedly sleeved on the outer portion of the drive shaft, and a second belt for transmission is arranged between the third and fourth belt pulleys.

[0015] Preferably, first and second stable frames are fixedly installed at the bottom of the support beam, the first and second stable frames are fixedly connected with the inner and outer sides of the load wheel disc, respectively, and the first and second stable frames are respectively provided with circular grooves, the Z-shaped rod is rotatably matched with the circular groove of the first stable frame, and the drive shaft is rotatably matched with the circular groove of the second stable frame.

[0016] Preferably, a concave cavity is arranged on the outer side of the load wheel disc, the driving and driven gears are arranged in the concave cavity, the outer diameter size of the load wheel disc is greater than the vertical height size of the Z-shaped rod, and the length size of the probe rod of the gas leak detector is less than the vertical height size of the Z-shaped rod.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The first rotating column and the second rotating column in the application can be used to bear the porcelain sleeve and do not affect its rotation on the horizontal plate. The porcelain sleeve can be vertically lifted in the rack through the bearing plate, so that the porcelain sleeve gradually approaches the first infrared leak detector and the second infrared leak detector, the first infrared leak detector tests the sealing performance of the head connection of the porcelain sleeve, the second infrared leak detector tests the sealing performance of the outer wall of the porcelain sleeve, and the Z-shaped rod drives the gas leak detector to rotate around the tail of the porcelain sleeve during the rotation of the porcelain sleeve, so that the gas leak detector tests the sealing performance of the tail connection of the porcelain sleeve, thereby completing the fault test of the porcelain sleeve. The application can test the sealing performance of the porcelain sleeve in all directions under the premise of being powered on, improves the fluid test method adopted in the prior art, reduces the single test time of the tester, improves the test efficiency, and speeds up the test process;

[0019] 2. The cooperation structure of the first air cylinder and the second air cylinder can control the distance between the first infrared leak detector, the second infrared leak detector and the porcelain sleeve, so that the first infrared leak detector and the second infrared leak detector can test the sealing performance of the porcelain sleeve in all directions. The sliding block can slide along the inner wall of the guide frame, so that the porcelain sleeve can be horizontally conveyed in the rack, and the first infrared leak detector and the second infrared leak detector have sufficient time to test the sealing performance of the outer wall of the porcelain sleeve, thereby further improving the accuracy and reliability of the test results.

[0020] 3. The fault test device in the application can be operated under the remote control of the tester, so that the tester and the porcelain sleeve in the powered state maintain a corresponding safe distance. On the one hand, the porcelain sleeve can be protected to avoid structural damage to the outer wall of the porcelain sleeve caused by accidental operation, and on the other hand, the safety protection degree of the whole device can be improved to avoid production accidents and protect the tester's body from being burned and damaged, thereby eliminating safety hazards, so the application has very wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the application, the drawings needed in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is the overall device structure diagram of the application;

[0023] Figure 2 It is the sleeve and sliding column cooperation structure diagram of the application;

[0024] Figure 3 It is the rotating rod installation structure diagram of the application;

[0025] Figure 4It is the schematic view of the vertical rod and cross rod cooperation structure of the present application;

[0026] Figure 5 It is the schematic view of the first infrared leak detector and the second infrared leak detector installation structure of the present application;

[0027] Figure 6 It is the schematic view of the hydraulic rod installation structure of the present application;

[0028] Figure 7 It is the schematic view of the load wheel disc installation structure of the present application;

[0029] Figure 8 It is the schematic view of the driving gear and driven gear installation structure of the present application;

[0030] In the figure: 1. Bench, 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 air cylinder, 10. Second air cylinder, 11. First infrared leak detector, 12. Second infrared leak detector, 13. Support frame, 14. Turnover frame, 15. Load wheel disc, 16. Driving gear, 17. Driven gear, 18. Driving shaft, 19. Z-shaped rod, 20. Ring plate, 21. Gas leak detector, 22. Partition plate, 23. Third air cylinder, 24. Support column, 25. Sleeve, 26. Slide column, 27. Stand column, 28. Plug, 29. Insert sleeve, 30. Rotating rod, 31. First motor, 32. First pulley, 33. Second pulley, 34. First belt, 35. Slide block, 36. Vertical rod, 37. Cross rod, 38. First bearing rod, 39. Second bearing rod, 40. Baffle, 41. First air cylinder seat, 42. Second air cylinder seat, 43. Pulley seat, 44. Pulley, 45. Hydraulic rod, 46. First hinged seat, 47. Second hinged seat, 48. Support beam, 49. Second motor, 50. Third pulley, 51. Fourth pulley, 52. Second belt, 53. First stable frame, 54. Second stable frame, 55. Concave cavity. DETAILED DESCRIPTION

[0031] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the present application will be described clearly and completely below by combining the drawings in the specific embodiments. Obviously, the embodiments described below are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] The specific embodiment provides a fault testing device for SF6 column circuit breaker, such as Figures 1-8As shown; including the rack 1, the bottom of the rack 1 is mounted with a plurality of foot, the foot and the rack 1 can be connected through the bolt, by screwing the bolt can adjust the distance between the rack 1 and the foot, so as to ensure that the device can be placed in the test operation area smoothly. The rack 1 is provided with two layers, the bottom layer is the main support structure, the top layer is the bearing structure; The inside of the rack 1 is fixedly installed with a partition plate 22, the partition plate 22 is arranged between the top layer and the bottom layer of the rack 1, the bottom of the partition plate 22 is fixedly installed with a third cylinder 23, the piston rod of the third cylinder 23 is vertically arranged upwards, the cylinder body of the third cylinder 23 is tightly connected with the partition plate 22, the end of the piston rod of the third cylinder 23 is arranged in the top layer of the rack 1 through the partition plate 22, the end of the piston rod of the third cylinder 23 is tightly connected with the bearing plate 2, the top of the top layer of the rack 1 is fixedly installed with a top plate 7, the support column 24 is fixedly installed between the partition plate 22 and the top plate 7, four sleeves 25 are fixedly installed in the partition plate 22, four sleeves 25 are arranged at the top of the third cylinder 23 respectively, each sleeve 25 is provided with a slidingly matched slide column 26, the outer wall of the slide column 26 is in sliding fit with the inner wall of the sleeve 25, the top end of the slide column 26 is tightly connected with the bearing plate 2; By arranging the third cylinder 23, the bearing plate 2 can be vertically lifted in the rack 1, and by arranging the matching structure of the slide column 26 and the sleeve 25, the bearing capacity of the piston rod of the third cylinder 23 can be shared, so as to ensure the stable operation of the third cylinder 23.

[0033] The bearing plate 2 is fixedly installed with four symmetrical distribution of the column 27, four are arranged in the inner side of the support column 24, the top of the column 27 is fixedly installed with the plug 28; The bottom of the top plate 7 is fixedly installed with the loading plate 8, the loading plate 8 is arranged above the bearing plate 2, the bottom of the loading plate 8 is fixedly installed with four symmetrical distribution of the plug 29, the plug 29 corresponds to the column 27 one by one, the plug 28 is inserted into the inner cavity of the plug 29; When the bearing plate 2 is vertically lifted in the rack 1, the column 27 can limit the lifting height of the bearing plate 2, so as to ensure that the distance between the bearing plate 2 and the loading plate 8 can accommodate the porcelain sleeve of the SF6 column type circuit breaker.

[0034] The bearing plate 2 is fixedly provided with a guide frame 3, which is arranged on the inner side of the stand column 27, one end of the guide frame 3 is arranged on the outer side of the rack 1, and the other end of the guide frame 3 is arranged on the inner side of the rack 1. A rotating rod 30 is rotatably arranged in the guide frame 3, and the rotating rod 30 is arranged vertically with the piston rod of the third cylinder 23. The side of the guide frame 3 is provided with a first motor 31, the body of the first motor 31 is fixedly connected with the bearing plate 2, and the output shaft of the first motor 31 is arranged in parallel with the rotating rod 30; the output shaft end of the first motor 31 is fixedly sleeved with a first pulley 32, and the end of the rotating rod 30 is fixedly sleeved with a second pulley 33; the first pulley 32 and the second pulley 33 are provided with a first belt 34 for transmission; through the cooperation of the first pulley 32 and the second pulley 33, the first motor 31 can drive the rotating rod 30 to rotate in the guide frame 3. The rotating rod 30 is sleeved with a sliding block 35, the sliding block 35 is arranged in the guide frame 3, the rotating rod 30 is rotatably connected with the sliding block 35, and the sliding block 35 is slidably connected with the inner wall of the guide frame 3; when the rotating rod 30 rotates, the sliding block 35 can be driven to move linearly in the guide frame 3, so as to adjust the arrangement position of the sliding block 35.

[0035] The top of the sliding block 35 is fixedly provided with a horizontal plate 4, and the sliding block 35 is provided with two, and the horizontal plate 4 is provided with two, each of which is fixedly provided with a vertical rod 36, and the top end of the vertical rod 36 is fixedly provided with a horizontal rod 37; the upper sides of the two horizontal plates 4 are provided with rotatable first and second rotating columns 5 and 6, the inner sides of the first and second rotating columns 5 and 6 are slidably sleeved with first and second receiving rods 38 and 39, and the two ends of the first and second receiving rods 38 and 39 are fixedly sleeved on the outer walls of the two horizontal rods 37. By arranging the first and second rotating columns 5 and 6, the porcelain sleeve of the SF6 column type circuit breaker can be conveniently carried, and the rotation of the porcelain sleeve on the horizontal plate 4 is not affected; the outer sides of the first and second rotating columns 5 and 6 are provided with baffles 40, the baffles 40 are fixedly connected with the horizontal plate 4, and the arrangement height of the baffles 40 is higher than that of the first and second rotating columns 5 and 6; so as to avoid the porcelain sleeve from being separated from the first and second rotating columns 5 and 6 when the horizontal rod 37 rotates, thereby improving the stability of the whole device.

[0036] The bottom of the loading plate 8 is symmetrically provided with a first cylinder seat 41 and a second cylinder seat 42, the first cylinder seat 41 and the second cylinder seat 42 are respectively provided with a first cylinder 9 and a second cylinder 10 arranged obliquely, the piston rods of the first cylinder 9 and the second cylinder 10 are respectively directed to the front end and the rear end of the porcelain sleeve, the piston rod ends of the first cylinder 9 and the second cylinder 10 are respectively fixedly provided with a first infrared leak detector 11 and a second infrared leak detector 12, the probe of the first infrared leak detector 11 is directed to the head of the porcelain sleeve, and the probe of the second infrared leak detector 12 is directed to the outer wall of the porcelain sleeve, the first infrared leak detector 11 and the second infrared leak detector 12 can respectively realize real-time imaging of the head and the outer wall of the porcelain sleeve through infrared imaging, so as to facilitate the test of the sealing performance of the connection between the head of the porcelain sleeve and the upper pressure equalizing ring and the outer wall of the porcelain sleeve.

[0037] The inner side of the first cylinder seat 41 and the second cylinder seat 42 is provided with a pulley seat 43, the pulley seat 43 is hoisted on the bottom of the loading plate 8, the bottom of the pulley seat 43 is rotatably provided with a pulley 44, the pulley 44 is arranged in parallel with 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 be used for fixing the porcelain sleeve at the same time, so as to ensure that the porcelain sleeve can be stably arranged in the gap between the loading plate 8 and the bearing plate 2.

[0038] The top end side of the rack 1 is fixedly provided with a support frame 13, the support frame 13 is arranged on the side of the guide frame 3 protruding out of the rack 1, the bottom of the support frame 13 is hingedly provided with a turnover frame 14, the inner side of the support frame 13 is hingedly provided with a hydraulic rod 45 through a pin shaft, the hydraulic rod 45 is provided with two and arranged symmetrically, the extension ends of the two hydraulic rods 45 are hingedly provided with a first hinged seat 46 through a pin shaft, the first hinged seat 46 is fixedly provided on the outer side bottom end of the turnover frame 14, the bottom of the support frame 13 is fixedly provided with two symmetrically arranged second hinged seats 47, the two second hinged seats 47 are hingedly connected with the outer side top end of the turnover frame 14 through a pin shaft, the hydraulic rod 45 can be used to drive the turnover frame 14 to turn over at the bottom of the support frame 13.

[0039] The inner side of the turnover frame 14 is fixedly installed with a support beam 48, the top of the support beam 48 is fixedly installed with a second motor 49, the output shaft of the second motor 49 faces the outer side of the turnover frame 14, the output shaft end of the second motor 49 is fixedly sleeved with a third belt pulley 50. The bottom of the support beam 48 is fixedly installed with a first stable frame 53 and a second stable frame 54, the inner side of the first stable frame 53 and the second stable frame 54 is provided with a load wheel disc 15, the first stable frame 53 and the second stable frame 54 are tightly connected with the inner and outer sides of the load wheel disc 15 respectively, so that the load wheel disc 15 is fixedly installed at the bottom of the support beam 48; the outer side of the load wheel disc 15 is provided with a concave cavity 55, the concave cavity 55 is provided with a driving gear 16 and a driven gear 17, the driven gear 17 is arranged at the center of the concave cavity 55, the driving gear 16 is arranged at the edge of the concave cavity 55, and the driving gear 16 and the driven gear 17 are in meshing transmission with each other.

[0040] The driving gear 16 is connected with a driving shaft 18, the outer side of the driving shaft 18 is fixedly sleeved with a fourth belt pulley 51, the second belt 52 for transmission is arranged between the third belt pulley 50 and the fourth belt pulley 51, and the second motor 49 can drive the driving shaft 18 and the driving gear 16 to rotate together through the third belt pulley 50 and the fourth belt pulley 51. The driven gear 17 is connected with a Z-shaped rod 19, the first stable frame 53 and the second stable frame 54 are both provided with a circular groove, a bearing is fixedly installed in the circular groove, and the Z-shaped rod 19 and the driving shaft 18 are sleeved in the bearing, so that the first stable frame 53 and the second stable frame 54 can effectively support the Z-shaped rod 19 and the driving shaft 18 to rotate; the Z-shaped rod 19 is arranged at the inner side of the turnover frame 14 close to the rack 1, and the Z-shaped rod 19 can rotate under the drive of the driven gear 17.

[0041] The bottom of the Z-shaped rod 19 is fixedly connected with a ring plate 20, a gas leak detector 21 is fixedly sleeved in the ring plate 20, and the probe port of the gas leak detector 21 faces the tail of the porcelain sleeve; in addition, the outer diameter size of the load wheel disc 15 is greater than the vertical height size of the Z-shaped rod 19, and the length size of the probe of the gas leak detector 21 is less than the vertical height size of the Z-shaped rod 19.

[0042] The working principle of the present application is that before SF6 column type circuit breaker fault test operation, the porcelain sleeve can be placed stably above the first rotating column 5 and the second rotating column 6, so that the tail of the porcelain sleeve faces the turnover frame 14. Under the driving action of the first motor 31, the sliding block 35 slides in the guide frame 3, so that the porcelain sleeve is transported to the inside of the rack 1. During this period, the first infrared leak detector 11 and the second infrared leak detector 12 can respectively test the leakage of the outer wall of the porcelain sleeve and real-time imaging to the terminal equipment. When the porcelain sleeve is completely inside the rack 1, the hydraulic rod 45 can drive the turnover frame 14 to overturn, so that the turnover frame 14 is perpendicular to the support frame 13. At the same time, the piston rod of the third air cylinder 23 can drive the bearing plate 2 to vertically ascend in the rack 1, and stop ascending operation when the plug-in head 28 is inserted with the plug-in barrel 29. At this time, the pulley 44 in the pulley seat 43 can contact the outer wall of the porcelain sleeve. The test personnel can power on the porcelain sleeve and rotate the porcelain sleeve, which can rotate above the first rotating column 5 and the second rotating column 6. The first infrared leak detector 11 can test the leakage of the head of the porcelain sleeve and the outer wall of the porcelain sleeve, so as to ensure the accuracy of the test. At the same time, the second motor 49 can make the driving shaft 18 rotate, and under the rotating action of the driving gear 16 and the driven gear 17, the Z-shaped rod 19 rotates along the center of the carrier wheel disc 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 pressure equalizing ring, so as to test the leakage of the connection of the tail of the porcelain sleeve.

[0043] The present application can test the sealing performance of the porcelain sleeve in all directions under the premise of power-on, improve the fluid test method adopted in the prior art, not only can reduce the single test time of the test personnel, but also can avoid the close contact of the test personnel with the porcelain sleeve in the power-on state, on the one hand can protect the porcelain sleeve, on the other hand can improve the safety protection degree of the whole device, so as to eliminate the safety hidden danger. In summary, the present application has very wide application prospect.

[0044] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fault testing device for SF6 pole-mounted circuit breakers, comprising a test bench (1), characterized in that, The platform (1) is equipped with a vertically lifting support plate (2). A guide frame (3) is fixedly installed on the support plate (2). A horizontally sliding cross plate (4) is installed on the guide frame (3). A rotatable first rotating column (5) and a second rotating column (6) are installed on the cross plate (4). The first rotating column (5) and the second rotating column (6) are used to support the porcelain sleeve of the SF6 pole-mounted circuit breaker. A top plate (7) is provided above the cross plate (4) and is fastened to the platform (1). A loading plate (8) is fixedly installed at the bottom of the top plate (7). A first cylinder (9) and a second cylinder (10) are symmetrically arranged at the bottom of the loading plate (8). A first infrared leak detector is fixedly installed at the piston rod end of the first cylinder (9) and the second cylinder (10). The instrument (11) and the second infrared leak detector (12) are provided. 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 installed on the top side of the platform (1). A flip frame (14) is hinged to the bottom of the support frame (13). A hydraulic rod (45) is hinged to the inner side of the support frame (13) through a pin. A first hinge seat (46) is hinged to the telescopic end of the hydraulic rod (45) through a pin. The first hinge seat (46) is fixedly installed on the outer bottom end of the flip frame (14). A second hinge seat (47) is fixedly installed on the bottom of the support frame (13). The second hinge seat (47) is hinged to the outer top end of the flip frame (14) through a pin. A wheel disk (15) is fixedly installed on the inner side of the tilting frame (14). A drive gear (16) and a driven gear (17) that mesh with each other are installed inside the wheel disk (15). The drive gear (16) is connected to a rotatable drive shaft (18). A support beam (48) is fixedly installed on the inner side of the tilting frame (14). A second motor (49) is fixedly installed on the top of the support beam (48). A third pulley (50) is fixedly fitted on the end of the output shaft of the second motor (49). A fourth pulley (51) is fixedly fitted on the outside of the drive shaft (18). A second belt (52) for transmission is provided between the third pulley (50) and the fourth pulley (51). A first stabilizing frame (53) and a second stabilizing frame (54) are fixedly installed on the bottom of the support beam (48). The first stabilizing frame (53) and the second stabilizing frame (54) are respectively connected to the wheel disk (15). The inner and outer sides of the device are fastened together. The first stabilizing frame (53) and the second stabilizing frame (54) are both provided with circular grooves. The driven gear (17) is connected to the Z-shaped rod (19). The Z-shaped rod (19) is rotatably engaged with the circular groove of the first stabilizing frame (53). The drive shaft (18) is rotatably engaged with the circular groove of the second stabilizing frame (54). The outer side of the wheel disk (15) is provided with a cavity (55). The driving gear (16) and the driven gear (17) are both arranged in the cavity (55). The outer diameter of the wheel disk (15) is larger than the vertical height of the Z-shaped rod (19). The probe length of the gas leak detector (21) is smaller than the vertical height of the Z-shaped rod (19). The bottom of the Z-shaped rod (19) is fixedly connected to a ring plate (20). The gas leak detector (21) is fixedly fitted inside the ring plate (20). The probe port of the gas leak detector (21) faces the tail of the ceramic sleeve.

2. The fault testing device for SF6 pole-mounted circuit breakers according to claim 1, characterized in that, A partition (22) is fixedly installed inside the frame (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 fastened to the bearing plate (2). A support column (24) is fixedly installed between the partition (22) and the top plate (7). Multiple sleeves (25) are fixedly installed inside the partition (22). A sliding column (26) with sliding fit is provided inside the sleeve (25). The top of the sliding column (26) is fastened to the bearing plate (2).

3. The fault testing device for SF6 pole-mounted circuit breakers according to claim 1, characterized in that, Multiple symmetrically distributed columns (27) are fixedly installed on the bearing plate (2). The columns (27) are all arranged on the outside of the guide frame (3). The top of each column (27) is fixedly installed with a connector (28). Multiple symmetrically distributed inserts (29) are fixedly installed on the bottom of the loading plate (8). The inserts (29) are all arranged on the outside of the first cylinder (9) and the second cylinder (10). The connector (28) is inserted into the inner cavity of the insert (29).

4. The fault testing device for SF6 pole-mounted circuit breakers according to claim 1, characterized in that, The guide frame (3) is arranged on the outside of the platform (1) near the flipping frame (14). A rotating rod (30) is rotatably installed inside the guide frame (3). A first motor (31) is provided on the side of the guide frame (3). A first pulley (32) is fixedly fitted at the end of the output shaft of the first motor (31). A second pulley (33) is fixedly fitted at the end of the rotating rod (30). A first belt (34) for transmission is provided between the first pulley (32) and the second pulley (33). A slider (35) is fitted on the outside of the rotating rod (30). The rotating rod (30) and the slider (35) are rotatably engaged. The two sides of the slider (35) are slidably engaged with the inner wall of the guide frame (3). The slider (35) is fastened to the horizontal plate (4).

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

6. The fault testing device for SF6 pole-mounted circuit breakers according to claim 1, characterized in that, The loading plate (8) is symmetrically equipped with a first cylinder seat (41) and a second cylinder seat (42). The first cylinder (9) and the second cylinder (10) are respectively fixedly installed inside the first cylinder seat (41) and the second cylinder seat (42). The inner side of the first cylinder seat (41) and the second cylinder seat (42) is provided with a pulley seat (43). The pulley seat (43) is suspended at the bottom of the loading plate (8). The bottom of the pulley seat (43) is rotatably equipped with a pulley (44). The pulley (44) is arranged parallel to the first rotating column (5) and the second rotating column (6).

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