Transformer withstand voltage test device

Abstract

The utility model discloses a withstand voltage test device for a transformer. The withstand voltage test device comprises a wire arranging seat, a wire clamping groove, a baffle plate, a spring and a deflector rod, according to the voltage withstanding test device for the transformer, two corresponding supporting pipes are jointly and fixedly connected with a wire arranging seat, wire clamping grooves are formed in the wire arranging seat at equal intervals, the outer sides, corresponding to the wire clamping grooves, of the wire arranging seat are fixedly connected with contraction grooves, the inner sides of the contraction grooves are slidably connected with baffles matched with the contraction grooves, and the baffles stretch out of the contraction grooves and are located on the front sides of the wire clamping grooves; springs are fixedly connected between the baffle and the tail end of the contraction groove at equal intervals, deflector rods are fixedly connected to the top and the bottom of the baffle, the deflector rods stretch out of the contraction groove and protrude out of the wire arrangement base, a long-strip-shaped groove opening used for the deflector rods to penetrate through and slide is formed in the contraction groove, and the wire arrangement base conducts wire arrangement through cooperation of the wire clamping groove. When the wire harness is placed in the wire clamping groove, the baffle is popped up through the spring so as to be located in front of the wire clamping groove, the wire harness is limited, and therefore the problem that the wire harness is disengaged is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a transformer withstand voltage test device. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are a primary coil, a secondary coil, and an iron core. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization.

[0003] The patent document with announcement number CN221174859U discloses a transformer power frequency withstand voltage test device, and raises the problem that "after the 10kV transformer is assembled, multiple tests are required to verify whether the performance and quality of the product meet the standard requirements. The 1-minute high-frequency withstand voltage test is a routine test, and the main insulation test is carried out for 1 minute on the high and low voltage sides respectively. The existing method is to directly connect the 10kV transformer and the power frequency device through a cable. A single power frequency device can only perform power frequency withstand voltage tests on the high and low voltage sides of a 10kV transformer. Due to the large production volume of 10kV transformers, the existing method is difficult to meet the production and testing needs." The problem is then solved.

[0004] However, in the above-mentioned prior art, the wires are only arranged by wire hooks. After being placed in the wire hooks, the wires are not fixed and are easily detached from the gaps, resulting in a messy wire harness. Therefore, a transformer withstand voltage test device is proposed to optimize the above-mentioned prior art. Utility Model Content

[0005] The purpose of the present utility model is to provide a transformer withstand voltage test device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A transformer withstand voltage test device includes a shell, a busbar is fixedly installed inside the shell through an insulator, the busbar is arranged in the shell, and a first connector and a second connector are symmetrically installed on both sides of the shell. The shell, the busbar, the first connector and the second connector are the same as those in the prior art. (A louver hole is opened on the top of the shell, and a fan is installed on the bottom of the shell. The louver hole and the fan cooperate to dissipate heat from the busbar. The busbar includes a main body, a flow balancing groove, and a heat conducting part. The flow balancing groove is arranged at the center of the main body, the flow balancing groove runs through the main body of the main body, the heat conducting part is located on both sides of the main body, and the heat conducting part is connected to the main body. The main body parts are integrally connected, a heat sink is installed in the heat conduction part, the main body part is used to conduct the circuit, the current equalizing groove extends the distance of the current conduction path between the second connector directly opposite to the first connector, which can improve the uniformity of the current when multiple groups of second connectors work at the same time, the two sides of the main body part are bent to form a heat conduction part, and the heat sink installed on the heat conduction part is used to quickly discharge the heat generated by the busbar during operation, thereby improving the stability of the operation. The first connector and the second connector have the same structure, and the first connector also includes a male head, a female head, a locking groove, and a protrusion. The male head of the housing passes through the housing, and the male head of the housing and the busbar are respectively connected. The female head is inserted into the outside of the male head, and a circle of locking grooves is provided on the outside of the male head. The locking groove does not pass through the main body of the male head, and the inner side of the female head is provided with a number of protrusions of no less than 100 parts. The protrusions fit in the locking grooves, and the locking grooves and the protrusions of the rubber material cooperate with each other to quickly fix the male head and the female head, thereby realizing rapid plug-in and improving test efficiency. When the transformer withstand voltage test device is working, the power frequency equipment is connected to the female head of the first connector through a cable, and multiple transformers to be tested are connected to the female head of the second connector through cables. The cables are neatly arranged using the cable management seat for testing. From the principle of parallel connection, it can be seen that the multiple cables connected to the second connector on the output side are connected in parallel, and the voltage of each cable is equal. Therefore, a single power frequency device can drive multiple transformers to perform power frequency withstand voltage tests at the same time, thereby improving the test efficiency. After actual measurement, the original transformer generally takes minutes to complete the power frequency test on the high-voltage side. After using this device, it can be completed directly in minutes. At the same time, during the test, the busbar will emit more heat and quickly conduct it to the radiator. The heat will be quickly discharged through the louver holes through the fan at the bottom of the shell facing the radiator, thereby improving the reliability of the work). The first connector and the second connector are both connected to the busbar, and the bottom surface of the shell is symmetrically fixedly connected with a support tube, and the corresponding two support tubes are commonly fixedly connected with a cable management seat, and the cable management seat is provided with wire clamping grooves at equal distances, and the cable management seats are fixedly connected with contraction grooves on the outer sides of the corresponding wire clamping grooves, and a baffle adapted to the contraction groove is slidably connected to the inner side of the contraction groove. The baffle extends out of the contraction groove and is located at the front side of the wire clamping groove, and a spring is fixedly connected to the tail end of the baffle and the contraction groove at equal distances, and the top and bottom of the baffle are fixedly connected with a shift rod, which extends out of the contraction groove and protrudes from the cable management seat, and the contraction groove is provided with a long slot for the shift rod to pass through and slide.

[0008] As a further solution of the present invention: a push rod is provided on the outside of the shift rod, and the ends of the corresponding push rods are fixedly connected to a connecting rod. The outside of the connecting rod is slidably connected to multiple buckle grooves, which are fixedly connected to the cable management seat and are used for sliding guidance of the connecting rod.

[0009] As a further solution of the present invention: the ends of the connecting rod are fixedly connected to an adjustment plate, and a threaded handle is rotatably connected to the adjustment plate. The threaded handle is inserted into the cable management seat and threadedly connected to the cable management seat. A threaded hole for threaded connection of the threaded handle is provided on the cable management seat.

[0010] As a further solution of the present invention: a base plate is provided under the shell, and a support rod is symmetrically fixedly connected to the top surface of the base plate. The support rod is inserted into the support tube and is slidably connected to the support tube. A cross frame is fixedly connected between the support tubes, and a threaded sleeve is rotatably connected to the cross frame. The inner side of the threaded sleeve is threadedly connected to a threaded rod compatible with it, and the threaded rod is fixedly connected to the top surface of the base plate.

[0011] As a further solution of the present invention: the top end of the threaded sleeve is fixedly connected to a worm wheel, the outer side of the worm wheel is provided with a worm that meshes with the worm wheel for transmission, the worm wheel is rotatably mounted on the horizontal frame, and the end of the worm wheel is fixedly connected to a rotating handle.

[0012] As a further solution of the present invention: casters are fixedly installed on the four corners of the bottom surface of the base plate, extension sleeves are fixedly connected on both sides of the base plate, and an extension rod matching it is slidably connected to the inner side of the extension sleeve, the end of the extension rod is threadedly connected to a first hand-tightening bolt, and a threaded hole for threaded connection of the first hand-tightening bolt is provided on the extension rod, a pad is fixedly connected to the bottom end of the first hand-tightening bolt, and the end of the extension sleeve is threadedly connected to a second hand-tightening bolt, the second hand-tightening bolt is inserted into the extension sleeve and tightened against the extension rod, and a threaded hole for threaded connection of the second hand-tightening bolt is provided on the extension sleeve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The cable management seat of the utility model manages the cables by cooperating with the cable groove. When the wiring harness is placed in the cable groove, the baffle is popped out by the spring and is located in front of the cable groove, so that the wiring harness is confined, thereby effectively avoiding the problem of wiring harness detachment.

[0015] 2. The utility model can use the lever to move the baffle, thereby conveniently controlling the opening of the wire trough and conveniently placing the wire harness in the wire trough. At the same time, by rotating the threaded handle, the connecting rod extended buckle slot is driven to slide through the adjustment plate, and the push rod pushes the lever to operate multiple baffles at the same time, controlling the opening of multiple wire troughs at the same time, and facilitating the quick removal of the entire wire harness. This facilitates the placement and fixing of the wire harness.

[0016] 3. The utility model drives the threaded sleeve to rotate by the rotation of the worm and the worm wheel, thereby driving the cross frame to rise by the cooperation of the threaded rod, thereby controlling the setting height of the shell and adjusting the height of the device.

[0017] 4. The utility model can move the device by means of casters, and can be parked by means of the first hand-tightened bolts and the setting of the feet. At the same time, the extension rod can be pulled out from the extension sleeve and locked and fixed by means of the second hand-tightened bolts, thereby effectively expanding the support surface and allowing the device to be parked stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a structural diagram of a transformer withstand voltage test device.

[0019] Figure 2 This is a diagram showing the wire management mechanism in a transformer withstand voltage test device.

[0020] Figure 3 This is a partial exploded view of the wire management mechanism in a transformer withstand voltage test device.

[0021] Figure 4 This is a top view of the bottom plate in a transformer withstand voltage test device.

[0022] In the figure: 1. Shell; 2. Insulator; 3. Busbar; 4. First connector; 5. Second connector; 6. Support tube; 7. Cable management seat; 8. Wire clamping groove; 9. Contraction groove; 10. Baffle; 11. Push rod; 12. Long slot; 13. Push rod; 14. Connecting rod; 15. Buckle groove; 16. Adjustment plate; 17. Threaded handle; 18. Bottom plate; 19. Support rod; 20. Cross frame; 21. Threaded sleeve; 22. Threaded rod; 23. Worm gear; 24. Worm; 25. Caster; 26. Extension sleeve; 27. Extension rod; 28. First hand-tightening bolt; 29. Second hand-tightening bolt; 30. Spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 4In an embodiment of the present invention, a transformer withstand voltage test device includes a shell 1. A busbar 3 is fixedly installed inside the shell 1 through an insulator 2. The busbar 3 is arranged in the shell 1. A first connector 4 and a second connector 5 are symmetrically installed on both sides of the shell 1. The shell 1, the busbar 3, the first connector 4 and the second connector 5 are the same as those in the prior art. (A louver hole is opened on the top of the shell 1, and a fan is installed at the bottom of the shell 1. The louver hole and the fan cooperate to dissipate heat from the busbar. The busbar 3 includes a main body, a flow balancing groove, and a heat conducting part. The flow balancing groove is arranged at the center of the main body, and the flow balancing groove runs through the main body of the main body. The heat conducting part On both sides of the main body, the heat conducting part is connected to the main body as a whole, a radiator is installed in the heat conducting part, the main body is used to conduct the circuit, and the current equalizing groove extends the distance of the current conduction path between the second connector 5 directly opposite to the first connector 4, which can improve the uniformity of the current when multiple groups of second connectors 5 work at the same time. The two sides of the main body are bent to form a heat conducting part, and the heat sink installed on the heat conducting part is used to quickly discharge the heat generated by the busbar 3 during operation, thereby improving the stability of the operation. The first connector 4 and the second connector 5 have the same structure. The first connector 4 also includes a male head, a female head, a locking groove, and a protrusion. The male head passes through the shell 1, and the male The heads are respectively connected to the shell 1 and the busbar 3, and the female head is inserted into the outside of the male head. A circle of locking grooves is provided on the outside of the male head, and the locking groove does not pass through the male head body. There are no less than two protrusions on the inside of the female head, and the protrusions are fitted with the locking grooves. The locking grooves and the protrusions of the rubber material cooperate with each other to quickly fix the male and female heads, realize fast plug-in, and improve test efficiency. When the transformer power frequency withstand voltage test device is working, the power frequency equipment is connected to the female head of the first connector 4 through a cable, and multiple transformers to be tested are connected to the female head of the second connector 5 through cables, and the cables are arranged neatly using the cable management seat 7. During the test, it can be seen from the principle of parallel connection that the multiple cables connected to the second connector 5 on the output side are connected in parallel, and the voltage of each cable is equal. Therefore, a single power frequency device can drive multiple transformers to perform power frequency withstand voltage tests at the same time, thereby improving the test efficiency. After actual measurement, the original 10 transformers generally require 10 minutes to complete the power frequency test on the high-voltage side. After using this device, it can be completed in 1 minute. At the same time, during the test, the busbar 3 will emit more heat and quickly conduct it to the radiator. The heat is quickly discharged through the louver holes through the fan at the bottom of the shell 1 facing the radiator, thereby improving the reliability of the work).The first connector 4 and the second connector 5 are both connected to the busbar 3. The bottom surface of the shell 1 is symmetrically fixedly connected with a support tube 6. The corresponding two support tubes 6 are commonly fixedly connected with a wire management seat 7. The wire management seat 7 is provided with wire clamping grooves 8 at equal distances. The outer sides of the wire management seats 7 corresponding to the wire clamping grooves 8 are fixedly connected with contraction grooves 9. The inner side of the contraction groove 9 is slidably connected with a baffle 10 adapted thereto. The baffle 10 extends out of the contraction groove 9 and is located at the front side of the wire clamping groove 8. A spring 30 is fixedly connected with the tail end of the baffle 10 and the contraction groove 9 at equal distances. The top and bottom of the baffle 10 are fixedly connected with a shift rod 11. The shift rod 11 extends out of the contraction groove 9 and protrudes from the wire management seat 7. The contraction groove 9 is provided with a long slot 12 for the shift rod 11 to pass through and slide.

[0025] The wire management seat 7 manages the wires through the cooperation of the wire clamping groove 8. When the wire harness is placed in the wire clamping groove 8, the baffle 10 pops out by the spring 30 and is located in front of the wire clamping groove 8, so that the wire harness is confined, thereby effectively avoiding the problem of the wire harness being detached.

[0026] A push rod 13 is provided on the outside of the shift rod 11, and a connecting rod 14 is fixedly connected to the end of the corresponding push rod 13. A plurality of buckle grooves 15 are slidably connected to the outside of the connecting rod 14. The buckle grooves 15 are fixedly connected to the cable management seat 7 and are used for sliding guidance of the connecting rod 14.

[0027] The ends of the connecting rod 14 are fixedly connected to an adjustment plate 16, and a threaded handle 17 is rotatably connected to the adjustment plate 16. The threaded handle 17 is inserted into the cable management seat 7 and threadedly connected to the cable management seat 7. A threaded hole for threaded connection of the threaded handle 17 is opened on the cable management seat 7.

[0028] The baffle 10 can be moved by the lever 11, thereby conveniently controlling the opening of the wire clamping slot 8 and conveniently placing the wire harness separately in the wire clamping slot 8. At the same time, by rotating the threaded handle 17, the connecting rod 14 is driven to slide along the buckle slot 15 through the adjustment plate 16, and the lever 11 is pushed by the push rod 13, so that multiple baffles 10 can be operated at the same time, controlling the simultaneous opening of multiple wire clamping slots 8, and facilitating the rapid removal of the entire wire harness. This facilitates the placement and fixing of the wire harness.

[0029] A bottom plate 18 is provided at the bottom of the shell 1, and a support rod 19 is symmetrically fixedly connected to the top surface of the bottom plate 18. The support rod 19 is inserted into the support tube 6 and is slidably connected to the support tube 6. A cross frame 20 is fixedly connected between the support tubes 6. A threaded sleeve 21 is rotatably connected to the cross frame 20, and the inner side of the threaded sleeve 21 is threadedly connected to a threaded rod 22 that is compatible with it. The threaded rod 22 is fixedly connected to the top surface of the bottom plate 18.

[0030] The top of the threaded sleeve 21 is fixedly connected to a worm wheel 23 , and a worm 24 is provided on the outside of the worm wheel 23 for meshing transmission. The worm 24 is rotatably mounted on the cross frame 20 , and a rotating handle is fixedly connected to the end of the worm 24 .

[0031] The worm 24 rotates in cooperation with the worm wheel 23 to drive the threaded sleeve 21 to rotate, and the threaded rod 22 cooperates to drive the cross frame 20 to rise, thereby controlling the setting height of the housing 1 and adjusting the height of the device.

[0032] Casters 25 are fixedly installed at the four corners of the bottom surface of the base plate 18, and extension sleeves 26 are fixedly connected to both sides of the base plate 18. The inner side of the extension sleeve 26 is slidably connected to an extension rod 27 that matches it. The end of the extension rod 27 is threadedly connected to a first hand-tightening bolt 28, and a threaded hole for threaded connection of the first hand-tightening bolt 28 is provided on the extension rod 27. The bottom end of the first hand-tightening bolt 28 is fixedly connected to a pad. The end of the extension sleeve 26 is threadedly connected to a second hand-tightening bolt 29, which is inserted into the extension sleeve 26 and tightened against the extension rod 27. The extension sleeve 26 is provided with a threaded hole for threaded connection of the second hand-tightening bolt 29.

[0033] The device can be moved by the casters 25 and can be parked by the first hand-tightening bolts 28 and the padding. At the same time, the extension rod 27 can be pulled out from the extension sleeve 26 and locked and fixed by the second hand-tightening bolts 29, thereby effectively expanding the support surface and allowing the device to be parked stably.

[0034] The working principle of this utility model is:

[0035] During use, the device is moved via casters 25, and the extension rod 27 is lifted to be drawn out of the extension sleeve 26. The second hand-tightening bolt 29 is then used to tighten and secure the device. The first hand-tightening bolt 28 is then turned to place the footrest against the ground, allowing the device to be parked. The worm 24 can then be rotated, and the threaded sleeve 21, in conjunction with the worm gear 23, drives the cross frame 20 to slide along the support rod 19, thereby adjusting the height of the housing 1. The baffle 10 is moved via the lever 11, causing it to compress the spring 30 and retract into the retraction groove 9. The wiring harness is then placed into the wire-holding groove 8. The lever 11 is then released, causing the spring 30 to cause the baffle 10 to pop out and shield the wire-holding groove 8, thereby confining the wiring harness and allowing each harness to be arranged and secured. When taking out the wire, the threaded handle 17 can be rotated to control the distance between the adjustment plate 16 and the wire management seat 7, thereby driving the push rod 13 to push the lever 11 through the connecting rod 14, so that all the baffles 10 are pushed, thereby facilitating the removal of the entire wire harness.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. 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 transformer withstand voltage test device, comprising a housing (1), characterized in that: A busbar (3) is fixedly installed inside the housing (1) via an insulator (2), and the busbar (3) is arranged inside the housing (1). A first connector (4) and a second connector (5) are symmetrically installed on both sides of the housing (1), and both the first connector (4) and the second connector (5) are connected to the busbar (3). A support tube (6) is symmetrically fixedly connected to the bottom surface of the housing (1), and a wire management seat (7) is fixedly connected to the two corresponding support tubes (6). The wire management seat (7) is provided with wire clamping grooves (8) at equal distances, and the wire management seat (7) corresponds to the wire clamping grooves (8). The outer side is fixedly connected with a contraction groove (9), the inner side of the contraction groove (9) is slidably connected with a baffle (10) adapted thereto, the baffle (10) extends out of the contraction groove (9) and is located in front of the wire clamping groove (8), a spring (30) is fixedly connected at an equal distance between the baffle (10) and the tail end of the contraction groove (9), the top and bottom of the baffle (10) are fixedly connected with a shifting rod (11), the shifting rod (11) extends out of the contraction groove (9) and protrudes from the wire management seat (7), and a long notch (12) for the shifting rod (11) to pass through and slide is opened on the contraction groove (9).

2. A transformer withstand voltage test device according to claim 1, characterized in that: A push rod (13) is provided on the outside of each of the shifting rods (11), and the ends of the corresponding push rods (13) are fixedly connected to a connecting rod (14). The outside of the connecting rod (14) is slidably connected to a plurality of buckle grooves (15), and the buckle grooves (15) are fixedly connected to the cable management seat (7).

3. A transformer withstand voltage test device according to claim 2, characterized in that: The ends of the connecting rod (14) are fixedly connected to an adjustment plate (16), and a threaded handle (17) is rotatably connected to the adjustment plate (16). The threaded handle (17) is inserted into the cable management seat (7) and then threadedly connected to the cable management seat (7).

4. A transformer withstand voltage test device according to claim 1, characterized in that: A bottom plate (18) is provided below the shell (1), and a support rod (19) is symmetrically fixedly connected to the top surface of the bottom plate (18), the support rod (19) is inserted into the support tube (6) and is slidably connected to the support tube (6), and a cross frame (20) is fixedly connected between the support tubes (6), and a threaded sleeve (21) is rotatably connected to the cross frame (20), and the inner side of the threaded sleeve (21) is threadedly connected to a threaded rod (22) adapted thereto, and the threaded rod (22) is fixedly connected to the top surface of the bottom plate (18).

5. A transformer withstand voltage test device according to claim 4, characterized in that: The top end of the threaded sleeve (21) is fixedly connected to a worm wheel (23), and a worm (24) meshing with the worm wheel (23) is provided on the outside of the worm wheel (23). The worm (24) is rotatably mounted on the horizontal frame (20), and the end of the worm (24) is fixedly connected to a rotating handle.

6. The transformer withstand voltage test device according to claim 4, characterized in that: Casters (25) are fixedly installed at the four corners of the bottom surface of the base plate (18), and extension sleeves (26) are fixedly connected on both sides of the base plate (18). The inner side of the extension sleeve (26) is slidably connected to an extension rod (27) matched therewith, and the end of the extension rod (27) is threadedly connected to a first hand-tightening bolt (28), and the bottom end of the first hand-tightening bolt (28) is fixedly connected to a pad foot, and the end of the extension sleeve (26) is threadedly connected to a second hand-tightening bolt (29), and the second hand-tightening bolt (29) is inserted into the extension sleeve (26) and pressed against the extension rod (27).

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