Three-phase automatic wire changing device for power frequency withstand voltage test

Abstract

The utility model provides a three-phase automatic wire changing device for a power frequency withstand voltage test, and the device comprises a rack which is provided with a plurality of high-voltage ground wire connecting assemblies and a plurality of main loop conductor members which are in one-to-one correspondence with the high-voltage ground wire connecting assemblies. The high-voltage ground wire connecting assembly comprises a high-voltage end connecting conductor and a ground wire connecting conductor; the main loop conductor piece comprises a main loop conductor arranged between the high-voltage end connecting conductor and the ground wire connecting conductor, and the main loop conductor is arranged at the output end of the driving piece, so that the main loop conductor has a first position and a second position. Through the above structure, during phase change, the driving member drives the main loop conductor member at the first position to descend to the second position, and the other driving member drives the other phase of the main loop conductor member to ascend to the first position, so that the main loop conductor member abuts against the high-voltage end connecting conductor, and automatic wire change operation is realized. Manual line changing is avoided, the working intensity is reduced, the labor efficiency is improved, and the danger of manual line changing is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase automatic line-changing devices for power frequency withstand voltage test, in particular to a three-phase automatic line-changing device for power frequency withstand voltage test. Background Art

[0002] According to the requirements for power frequency withstand voltage test in GB / T 3906-2020, during the power frequency withstand voltage test, the conductor of each phase of the main circuit should be connected to the high voltage end of the test power supply in turn. At the same time, each time a phase conductor in the main circuit is connected to the high voltage end of the test power supply, the conductors of other phases of the main circuit are grounded and the connectivity of the main circuit is ensured, so as to realize the power frequency withstand voltage test on each phase in turn.

[0003] However, currently, when replacing the conductors of each phase of the main circuit, manual replacement is used, which has high work intensity, low labor efficiency and is dangerous. Utility Model Content

[0004] The utility model discloses a three-phase automatic line-changing device for power frequency withstand voltage test, which mainly solves the problem that the line changing of the conductor of each phase main circuit is carried out manually, with high work intensity, low labor efficiency and danger.

[0005] To achieve the above purpose, the technical solution of the present invention is implemented as follows:

[0006] The utility model provides a three-phase automatic line-changing device for power frequency withstand voltage test, comprising a frame, on which a plurality of high-voltage ground connection assemblies and a plurality of main circuit conductors corresponding to the high-voltage ground connection assemblies are arranged, and the main circuit conductors are driven by a driving member;

[0007] The high-voltage ground wire connection assembly comprises a high-voltage end connection conductor and a ground wire connection conductor, and an isolation insulator is connected between the high-voltage end connection conductor and the ground wire connection conductor;

[0008] The main loop conductor part includes a main loop conductor arranged between a high-voltage end connecting conductor and a ground wire connecting conductor. The main loop conductor is arranged at the output end of the driving part so that the main loop conductor has a first position and a second position. When the main loop conductor is in the first position, the main loop conductor conflicts with the high-voltage end connecting conductor. When the main loop conductor is in the second position, the main loop conductor conflicts with the ground wire connecting conductor.

[0009] In one embodiment, the main circuit conductor component further includes a main circuit insulator, one end of the main circuit insulator is installed at the output end of the driving component, and the other end is connected to the main circuit conductor.

[0010] In one embodiment, the driving member includes a cylinder and a lifting plate, the lifting plate is installed at the output end of the cylinder, and the main circuit conductor is installed on the lifting plate.

[0011] In one embodiment, a guide rod is disposed on the lifting plate, a guide sleeve is disposed at a position of the frame corresponding to the guide rod, the guide sleeve has guide holes extending therethrough from top to bottom, and the guide rod passes through the guide hole.

[0012] In one embodiment, the high-voltage ground wire connection assembly is installed on the frame through a supporting insulator.

[0013] In one embodiment, a plurality of first contacts are provided on the side of the high-voltage end connecting conductor and the ground wire connecting conductor facing the main loop conductor, and a second contact is provided at the position of the high-voltage end connecting conductor corresponding to the first contact, and both the first contact and the second contact are conductive, and the first contact includes vertical plates provided on both sides of the second contact, and the vertical plates are tough, and the two vertical plates are connected by a connecting plate, and the connecting plate is provided with a through hole matching the second contact.

[0014] In one embodiment, a slot is provided on the vertical plate, an end of the vertical plate close to the main circuit conductor has an inclined guide plate, and a block is provided at a position of the second contact piece corresponding to the slot, and the block is embedded in the slot.

[0015] The advantages or beneficial effects of the above technical solution include at least: when phase change is required, since the frame is provided with multiple high-voltage ground wire connection assemblies and multiple main circuit conductor parts corresponding to the high-voltage ground wire connection assemblies respectively, the main circuit conductor parts are driven by the driving parts. Therefore, the main circuit conductor part of one phase that conflicts with the high-voltage end connection conductor can be driven by the driving part to descend to the second position, so that the main circuit conductor part conflicts with the ground wire connection conductor at the corresponding position, and then the main circuit conductor part of another phase is driven by another driving part to rise to the first position, so that the main circuit conductor part conflicts with the high-voltage end connection conductor, and the power frequency withstand voltage test can be performed on the phase to realize the operation of automatic line change, avoid manual line change, reduce work intensity, improve labor efficiency, and prevent the danger of manual line change. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings illustrate exemplary embodiments of the present invention and are used to explain the principles of the present invention together with the description. These drawings are included to provide a further understanding of the present invention, and the drawings are included in and constitute a part of this specification.

[0017] Figure 1 A schematic structural diagram of a three-phase automatic line-changing device for power frequency withstand voltage test according to an exemplary embodiment of the utility model is shown;

[0018] Figure 2 A schematic structural diagram of a high-voltage ground connection assembly, a main circuit conductor, and a driving component according to an exemplary embodiment of the utility model is shown;

[0019] Figure 3 A schematic structural diagram of a first contact member according to an exemplary embodiment of the utility model is shown;

[0020] Figure 4 A schematic structural diagram of a second contact member according to an exemplary embodiment of the utility model is shown.

[0021] Description of reference numerals:

[0022] 1. Frame;

[0023] 2. High voltage ground connection assembly;

[0024] 21. High-voltage end connecting conductor; 22. Ground wire connecting conductor; 23. Isolating insulator; 24. First contact piece; 241. Vertical plate; 242. Connecting plate; 243. Perforation; 244. Card slot; 245. Guide plate;

[0025] 3. Main circuit conductors;

[0026] 31. Main circuit conductor; 32. Main circuit insulator; 33. Second contact piece; 331. Block;

[0027] 4. Driving parts;

[0028] 41. Cylinder; 42. Lifting plate; 43. Guide rod; 44. Guide sleeve; 441. Guide hole;

[0029] 5. Support insulator;

[0030] 6. Stabilizing board. DETAILED DESCRIPTION

[0031] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc. mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0034] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0035] The names of the messages or information exchanged between multiple devices in the implementation manner of the present utility model are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0036] See also Figure 1 and Figure 2 The embodiment of the utility model provides a three-phase automatic line-changing device for power frequency withstand voltage test, comprising a frame 1, on which are arranged a plurality of high-voltage ground connection assemblies 2 and a plurality of main circuit conductors 3 corresponding to the high-voltage ground connection assemblies 2, respectively, and the main circuit conductors 3 are driven by a driving member 4; wherein the plurality of main circuit conductors 3 are respectively used to connect the phase lines of the main circuit. Preferably, the high-voltage ground connection assemblies 2 and the main circuit conductors 3 can be provided in three numbers respectively.

[0037] The high-voltage ground wire connection assembly 2 includes a high-voltage end connecting conductor 21 and a ground wire connecting conductor 22, and an isolation insulator 23 is connected between the high-voltage end connecting conductor 21 and the ground wire connecting conductor 22; wherein, the high-voltage end connecting conductor 21 is used to connect the high-voltage end of the test power supply; the ground wire connecting conductor 22 is used to connect the ground wire to facilitate the release of electricity after the test.

[0038] The main loop conductor part 3 includes a main loop conductor 31 arranged between the high-voltage end connection conductor 21 and the ground connection conductor 22. The main loop conductor 31 is arranged at the output end of the driving part 4, so that the main loop conductor 31 has a first position and a second position. When the main loop conductor 31 is in the first position, the main loop conductor 31 conflicts with the high-voltage end connection conductor 21. When the main loop conductor 31 is in the second position, the main loop conductor 31 conflicts with the ground connection conductor 22. The bottom of the plurality of high-voltage ground connection components 2 is installed on the frame 1, and the top is connected to the frame 1 through a stabilizing plate 6 to ensure that the plurality of high-voltage ground connection components 2 can be stably installed on the frame 1.

[0039] With the above structure, when phase change is required, since the frame 1 is provided with a plurality of high-voltage ground connection assemblies 2 and a plurality of main circuit conductor parts 3 corresponding to the high-voltage ground connection assemblies 2, respectively, and the main circuit conductor parts 3 are driven by the driving part 4, the main circuit conductor part 3 of one phase that conflicts with the high-voltage end connection conductor 21 can be driven by the driving part 4 to descend to the second position, so that the main circuit conductor part 3 conflicts with the ground connection conductor 22 at the corresponding position, and then the main circuit conductor part 3 of another phase is driven by another driving part 4 to rise to the first position, so that the main circuit conductor part 3 conflicts with the high-voltage end connection conductor 21, and then the power frequency withstand voltage test can be performed on the phase to realize the operation of automatic line change, avoid manual line change, reduce work intensity, improve labor efficiency, and prevent the danger of manual line change.

[0040] In one embodiment, see Figure 2 The main circuit conductor part 3 also includes a main circuit insulator 32, one end of which is installed at the output end of the driver 4, and the other end is connected to the main circuit conductor 31. In actual use, the main circuit insulator 32 is used to connect the driver 4 and the main circuit conductor 31, and can prevent the main circuit conductor 31 and the driver 4 from being energized, so as to ensure the accuracy of the test results.

[0041] In one embodiment, see Figure 2 The driving member 4 includes a cylinder 41 and a lifting plate 42. The lifting plate 42 is installed at the output end of the cylinder 41, and the main circuit conductor 3 is installed on the lifting plate 42. In actual use, the lifting plate 42 is used to connect the cylinder 41 and the main circuit conductor 3. After the lifting plate 42 is driven by the cylinder 41, the lifting plate 42 can drive the main circuit conductor 3 to move up and down, so as to drive the main circuit conductor 31 to switch between the first position and the second position.

[0042] A guide rod 43 is provided on the lifting plate 42, and a guide sleeve 44 is provided at a position of the frame 1 corresponding to the guide rod 43. The guide sleeve 44 has a guide hole 441 extending therethrough, and the guide rod 43 passes through the guide hole 441. In actual use, the cooperation between the guide rod 43 and the guide hole 441 can make the lifting of the lifting plate 42 more stable.

[0043] In one embodiment, see Figure 1 and Figure 2 The high-voltage ground connection assembly 2 is installed on the frame 1 through the support insulator 5. In actual use, the support insulator 5 is used to support the high-voltage ground connection assembly 2 to play an insulating role between the high-voltage ground connection assembly 2 and the frame 1.

[0044] In one embodiment, see Figure 2 , Figure 3 and Figure 4, a plurality of first contacts 24 are arranged on the side of the high-voltage end connection conductor 21 and the ground connection conductor 22 facing the main circuit conductor 31, a second contact 33 is arranged at the position of the high-voltage end connection conductor 21 corresponding to the first contact 24, both the first contact 24 and the second contact 33 are conductive, the first contact 24 includes vertical plates 241 arranged on both sides of the second contact 33, the vertical plates 241 are tough, the two vertical plates 241 are connected by a connecting plate 242, and the connecting plate 242 is provided with a through hole 243 matching the second contact 33. In actual use, through the cooperation of the two vertical plates 241 of the first contact 24 and the second contact 33, when the main circuit conductor 31 contacts the high-voltage end connection conductor 21 or the ground connection conductor 22, the second contact 33 will pass through the through hole 243, and the second contact 33 will be tightly clamped by the two vertical plates 241, so that the contact between them is tighter and more stable.

[0045] A slot 244 is provided on the vertical plate 241, and an inclined guide plate 245 is provided at one end of the vertical plate 241 close to the main circuit conductor 31. A block 331 is provided at the position of the second contact member 33 corresponding to the slot 244, and the block 331 is embedded in the slot 244. In actual use, the block 331 cooperates with the slot 244 to play a positioning role, that is, when the block 331 is embedded in the slot 244, the main circuit conductor 31 is in close contact with the high-voltage end connection conductor 21 or the ground connection conductor 22, and under the action of the guide plate 245, the second contact member 33 can be guided between the two vertical plates 241.

[0046] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0047] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above utility model, and these changes or modifications are still within the scope of the present utility model.

Claims

1. A three-phase automatic line-changing device for power frequency withstand voltage test, characterized in that: The machine comprises a frame, on which a plurality of high-voltage ground connection components and a plurality of main circuit conductors corresponding to the high-voltage ground connection components are arranged, and the main circuit conductors are driven by a driving component; The high-voltage ground wire connection assembly comprises a high-voltage end connection conductor and a ground wire connection conductor, and an isolation insulator is connected between the high-voltage end connection conductor and the ground wire connection conductor; The main loop conductor part includes a main loop conductor arranged between a high-voltage end connecting conductor and a ground wire connecting conductor. The main loop conductor is arranged at the output end of the driving part so that the main loop conductor has a first position and a second position. When the main loop conductor is in the first position, the main loop conductor conflicts with the high-voltage end connecting conductor. When the main loop conductor is in the second position, the main loop conductor conflicts with the ground wire connecting conductor.

2. The three-phase automatic line-changing device for power frequency withstand voltage test according to claim 1, characterized in that: The main circuit conductor also includes a main circuit insulator, one end of which is installed at the output end of the driving component, and the other end of which is connected to the main circuit conductor.

3. The three-phase automatic line-changing device for power frequency withstand voltage test according to claim 1, characterized in that: The driving component comprises a cylinder and a lifting plate, wherein the lifting plate is installed at the output end of the cylinder, and the main circuit conductor component is installed on the lifting plate.

4. The three-phase automatic line-changing device for power frequency withstand voltage test according to claim 3 is characterized in that: The lifting plate is provided with a guide rod, the frame is provided with a guide sleeve at a position corresponding to the guide rod, the guide sleeve has guide holes extending through the upper and lower parts, and the guide rod passes through the guide hole.

5. The three-phase automatic line-changing device for power frequency withstand voltage test according to claim 1, characterized in that: The high-voltage ground wire connection assembly is installed on the frame through a supporting insulator.

6. The three-phase automatic line-changing device for power frequency withstand voltage test according to claim 1, characterized in that: A plurality of first contacts are arranged on the side of the high-voltage end connecting conductor and the ground wire connecting conductor facing the main loop conductor, and a second contact is arranged at the position of the high-voltage end connecting conductor corresponding to the first contact, and both the first contact and the second contact are conductive, and the first contact includes vertical plates arranged on both sides of the second contact, and the vertical plates are tough, and the two vertical plates are connected by a connecting plate, and the connecting plate is provided with a through hole matching the second contact.

7. The three-phase automatic line-changing device for power frequency withstand voltage test according to claim 6, characterized in that: The vertical plate is provided with a slot, an end of the vertical plate close to the main circuit conductor is provided with an inclined guide plate, and a block is provided at a position of the second contact piece corresponding to the slot, and the block is embedded in the slot.

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