Device for opening distance of vacuum arc-extinguishing chamber

Abstract

A device for increasing the distance of a vacuum arc-extinguishing chamber comprises a placing frame used for placing the vacuum arc-extinguishing chamber, the placing frame is provided with a to-be-pulled placing area located on the upper portion and a pulled-out placing area located on the lower portion, and the to-be-pulled placing area and the pulled-out placing area are each provided with two symmetrically-distributed connecting transverse rods on the placing frame. A positioning plate is arranged between the two connecting cross rods, the positioning plate is provided with a plurality of positioning jacks for providing different placement positions for the vacuum arc-extinguishing chamber, a movable conducting rod of the vacuum arc-extinguishing chamber is provided with a tool for opening a distance, and the tool for opening the distance is provided with a distance opening assembly which is in hooking fit with the tool for opening the distance. The beneficial effects of the utility model lie in that the placing rack is used for defining the placing area of the vacuum arc-extinguishing chamber to be pulled or pulled completely, the detection tool and the distance opening assembly are used for carrying out distance opening on the vacuum arc-extinguishing chamber, the detection tool and the distance opening assembly are in hook joint cooperation to realize rapid cooperation, and the connection stability can be ensured during distance opening without the support of a fastening structure; and after the distance is increased, a detection block is inserted to ensure the accuracy of the distance.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical detection, in particular to a device for separating a vacuum interrupter. Background Art

[0002] During the long-term operation of vacuum switches, vacuum interrupters play a crucial role. Not only must they carry the operating current to maintain circuit connectivity during normal operation, but they must also rapidly interrupt short-circuit current in the event of a fault to protect the power system. Furthermore, vacuum interrupters shoulder the critical task of fault isolation: providing reliable electrical isolation in the disconnected state, ensuring stable operation of the power system and personnel safety. Therefore, the vacuum interrupter's insulation performance, mechanical strength, and ability to operate stably under high voltage and high current conditions are fundamental to ensuring the safe and reliable operation of the entire vacuum switch and, ultimately, the entire power system.

[0003] To ensure vacuum interrupters meet stringent operating requirements, manufacturers subject them to a series of rigorous quality inspections before shipment, including but not limited to high-voltage burn-in tests, vacuum level measurements, and withstand voltage tests. These tests verify the interrupter's dielectric strength, arc-extinguishing performance, and sealing properties under extreme conditions, ensuring that every product meets established quality standards. A crucial step in these tests is separating the vacuum interrupter's moving and stationary contacts to the predetermined distance for accurate measurement and evaluation.

[0004] Publication (Announcement) No.: CN220584289U discloses a multi-station vacuum interrupter spacing device, comprising a frame, a servo motor disposed in the middle of the frame, the servo motor being connected to a reducer through a connecting device, the reducer being connected to a clamping device, the servo motor driving the clamping device to move up and down through the reducer; a plurality of vacuum interrupters are disposed on the frame, the guide rods of the vacuum interrupters passing through the frame mounting connector, the connector being detachably connected to the clamping device. The vacuum interrupters in this vacuum interrupter spacing device are inverted on the mounting station, with only the movable conductive rod extending downwardly into the frame and connected to the pneumatic elastic clamp. Although this method can achieve spacing, it has a drawback in that it relies on the rotation of the servo motor to drive the movable conductive rod of the vacuum interrupter to move, i.e., the number of rotations of the servo motor determines the spacing distance, and the spacing distance is also determined only by the servo motor. Therefore, when the servo motor fails (the motor operates abnormally, resulting in insufficient rotations), it is difficult for the operator to detect this situation, thus posing a hidden danger in use. Utility Model Content

[0005] The present invention aims to solve the above-mentioned shortcomings of the prior art and provides a vacuum interrupter spacing device to solve the above-mentioned problems.

[0006] The utility model solves its technical problems by adopting a technical solution: the device for spacing the vacuum interrupter comprises a placement rack for placing the vacuum interrupter, the placement rack having an upper area for placement to be pulled and a lower area for placement after pulling, the area for placement to be pulled and the area for placement after pulling are both provided with two symmetrically distributed connecting cross bars on the placement rack, a positioning plate is provided between the two connecting cross bars, the positioning plate has a plurality of positioning sockets for providing different placement positions for the vacuum interrupter, a moving conductive rod of the vacuum interrupter is provided with a spacing tooling, and the spacing tooling is provided with a spacing component that is hooked and cooperated with it.

[0007] To be further improved, the distance-pulling tooling is locked with the moving conductive rod of the vacuum interrupter through a locking structure, and the locking or unlocking of the locking structure is achieved by a connecting screw arranged on the distance-pulling tooling, and a hook portion is provided on the connecting screw for hooking with the distance-pulling component.

[0008] To be further improved, the hooking part includes two connecting nuts with different outer diameters, wherein the connecting nut with a small outer diameter abuts against the upper end face of the tooling for pulling the distance apart, and the connecting nut with a large outer diameter abuts against the upper end face of the connecting nut with a small outer diameter, and the size difference is utilized so that the distance apart component can be hooked on the connecting nut with a small outer diameter while also abutting against the lower end face of the connecting nut with a large outer diameter.

[0009] To further improve, the opening distance component includes a pinching tube, a connecting hook, and an opening distance actuator. The pinching tube abuts against the upper end surface of the opening distance tooling when opening the distance. The opening distance actuator is arranged on the upper end surface of the pinching tube and its lifting rod extends into the pinching tube. The upper end of the connecting hook is connected to the lifting rod of the opening distance actuator, and the lower end is hooked to the hook part.

[0010] For further improvement, a distance increasing ring is provided on the lifting rod of the distance actuator, the upper end of the distance increasing ring is rotatably matched with the lifting rod, and the lower end is connected to the connecting hook.

[0011] For further improvement, the connecting hook is configured as a rod-shaped component, which is formed into a connecting portion and a hook portion by bending. The connecting portion is triangular in configuration and is formed with a hanging node that allows it to be hung on the distance increasing ring. The hook portion and the connecting portion are arranged vertically, and it is hooked on the connecting nut with a small outer diameter and also abuts against the lower end face of the connecting nut with a large outer diameter.

[0012] Further improvement, the opening distance actuator includes a cylinder and a manual switch valve. The cylinder is arranged on the upper end surface of the grasping tube, and its lifting rod extends into the grasping tube. The manual switch valve is arranged on one side of the cylinder and pneumatically connected to the cylinder.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model uses a display rack to clearly define the placement area of the vacuum interrupter to be inspected or completed, and also uses a positioning plate to provide a clear placement position to avoid the situation of missing inspections due to random placement;

[0015] 2. The utility model utilizes a distance-pushing tool and a distance-pushing assembly to distance the vacuum interrupter. The distance-pushing assembly and the distance-pushing tool are hooked together to achieve quick coordination, and the connection stability can be ensured during distance-pushing without the support of a fastening structure.

[0016] 3. The gripping tube of the distance-opening assembly of the present invention has an opening that exposes the connecting screw of the distance-opening tool to the operator's field of vision, and through the opening, a detection block can be inserted after the distance is opened to further ensure the accuracy of the distance opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the distance-distance tooling of the present invention;

[0019] Figure 3 This is a schematic diagram of the coordination of the distance-pulling tooling and the distance-pulling assembly of the present invention;

[0020] Figure 4 This is a partial cross-sectional structural diagram of the spacing tooling, spacing assembly, and vacuum interrupter of the present invention;

[0021] Figure 5 This is a schematic diagram of the state of the utility model after the distance is pulled apart. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Referring to the accompanying drawings: This device for spacing the vacuum interrupter comprises a placement rack 2 for placing the vacuum interrupter 1, the placement rack 2 having an upper area 21 for placement to be pulled and a lower area 22 for placement after completion of pulling, the area 21 for placement to be pulled and the area 22 for placement after completion of pulling are both provided with two symmetrically distributed connecting cross bars 23 on the placement rack 2, a positioning plate 24 is provided between the two connecting cross bars 23, the positioning plate 24 has a plurality of positioning sockets 241 for providing different placement positions for the vacuum interrupter 1, a spacing tool 3 is provided on the moving conductive rod of the vacuum interrupter 1, and a spacing tool 3 is provided on the spacing tool 3 to be hooked with it. The principle of the present invention is that the placing rack 2 is used to place the vacuum interrupter 1, and the placing area is divided into two parts, namely the to-be-pulled placing area 21 and the completed pulling placing area 22. The to-be-pulled placing area 21 is used to place the vacuum interrupter 1 to be pulled, and the completed pulling placing area 22 is used to place the completed vacuum interrupter 1. The connecting cross bar 23 is fixed on the placing rack 2 by welding, which is used to set the positioning plate 24. The positioning plate 24 is plugged into the connecting cross bar 23, and then the positioning socket 241 formed on the positioning plate 24 is used to provide a clear placement position for the vacuum interrupter 1. In this way, multiple vacuum interrupters 1 are placed on the same There will be no disorderly placement in an area, especially for the vacuum interrupter 1 in the area 21 to be pulled, there will be no missed pulling. Each vacuum interrupter 1 will be installed with a distance-pulling tool 3 (installed on the moving conductive rod of the vacuum interrupter 1) before pulling the distance. The distance-pulling tool 3 is used in conjunction with the distance-pulling component 4, that is, when pulling the distance, the distance-pulling component 4 is hooked on the distance-pulling tool 3, and then the distance-pulling component 4 will provide pulling force, and while pulling the distance-pulling tool 3, it also drives the moving conductive rod to move in the direction of separation from the static conductive rod, and the pulling distance needs to match the thickness of the detection block 6.

[0024] The distance-pulling tool 3 is locked with the moving conductive rod of the vacuum interrupter 1 through a locking structure. The locking or unlocking of the locking structure is achieved by a connecting screw 31 provided on the distance-pulling tool 3. The connecting screw 31 is provided with a hook portion 311 that is hooked with the distance component 4. This setting is made in consideration of the fact that when the distance-pulling tool 3 is subjected to force (the distance component 4 provides tension), it will simultaneously drive the moving conductive rod to move. It is necessary to ensure a stable connection between the distance-pulling tool 3 and the moving conductive rod, so the locking structure is achieved. The locking structure is composed of a moving rod 321, a locking plug 322, a limit baffle 323, and a spring, and the locking or unlocking of the locking structure is achieved by the connecting screw 3 1 is realized, a pressing cylinder 312 is provided on the connecting screw 31 (the pressing cylinder 312 increases the range of action of the connecting screw 31), and the pressing cylinder 312 drives the locking plug 322 to move (toward the locking direction) by pressing downward. A locking hole is provided on the movable conductive rod of the vacuum interrupter 1, and the locking hole is locked and combined with the locking plug 322. After the locking combination, the connecting screw 31 does not lose its position, forming a constraint to prevent the locking plug 322 from moving, thereby ensuring the stable combination of the locking hole and the locking plug 322. The hooking portion 311 is used to hook and cooperate with the spacing component 4. The hooking eliminates the need for a locking structure between the two, simplifies the structure, and can also ensure the stable connection between the two.

[0025] The hooking portion 311 includes two connecting nuts 3111 with different outer diameters, wherein the connecting nut 3111 with a small outer diameter abuts against the upper end face of the distance-pulling tool 3, and the connecting nut 3111 with a large outer diameter abuts against the upper end face of the connecting nut 3111 with a small outer diameter, and the size difference is utilized to enable the distance-pulling component 4 to be hooked on the connecting nut 3111 with a small outer diameter while also abutting against the lower end face of the connecting nut 3111 with a large outer diameter. The connecting nut 3111 and the connecting screw 31 are threadedly connected, and the use position can be adjusted by rotation (the use position is adjusted after the distance-pulling tool 3 abuts against the upper end face of the guide sleeve of the vacuum arc chamber). The two connecting nuts 3111 are distributed up and down, with the connecting nut 3111 with a large outer diameter on the top and the connecting nut 3111 with a small outer diameter on the bottom. 3111 is at the bottom, so that the stacking and size difference settings can be used to form a gap between the lower end face of the connecting nut 3111 with a large outer diameter and the upper end face of the distance-separating tool 3. In this way, the distance-separating device is inserted into the connecting nut 3111 with a small outer diameter and also abuts against the lower end face of the connecting nut 3111 with a large outer diameter to achieve hooking. In this way, the hooking part of the distance-separating device will not have unnecessary movement when pulling up, and the pulling force can be directly transmitted to the moving conductive rod of the vacuum arc chamber. After the distance is separated, the lower end face of the connecting nut 3111 located below forms a gap with the upper end face of the distance-separating tool 3. The gap is built into the detection block 6 inserted on the connecting screw 31 to detect whether the separation distance is qualified (the upper end face of the detection block 6 fits with the lower end face of the connecting nut 3111 located below when inserted).

[0026] The distance component 4 includes a gripping tube 41, a connecting hook 42, and a distance actuator 43. The gripping tube 41 abuts against the upper end surface of the distance tooling 3 when the distance is pulled. The distance actuator 43 is arranged on the upper end surface of the gripping tube 41 and its lifting rod extends into the gripping tube 41. The upper end of the connecting hook 42 is connected to the lifting rod of the distance actuator 43, and the lower end is hooked to the hook portion 311. The gripping tube 41 allows the operator to hold the distance component 4 and has the function of exposing the distance tooling 3 to the operator. The opening 411 in the staff's field of vision, the distance actuator 43 is used to provide pulling force, and the connecting hook 42 is inserted into the connecting nut 3111 with a small outer diameter while also abutting against the lower end surface of the connecting nut 3111 with a large outer diameter to achieve hook cooperation. In this way, when distance is pulled, the operator holds the grasping tube 41 and places it on the upper end surface of the distance tooling 3, and then applies a certain downward pressure on the distance tooling 3, and then the distance actuator 43 provides pulling force to connect the screw 31.

[0027] A distance-increasing ring 5 is also provided on the lifting rod of the distance-opening actuator 43. The upper end of the distance-increasing ring 5 is rotatably matched with the lifting rod, and the lower end is connected to the connecting hook 42. Such a setting is made in consideration of the fact that the distance-opening actuator 43 is a small-volume actuator, so the usable length of its lifting rod is limited. Therefore, the distance-increasing ring 5 is used to increase the usable length of the lifting rod. The distance-increasing ring 5 is a rod-shaped component, which is formed into a rectangular ring by bending and has an opening reserved. In this way, when the distance-increasing ring 5 is set on the lifting rod, it can be bent outward to increase the opening distance (greater than the outer diameter of the lifting rod), and then one of the rod segments at the open end of the distance-increasing ring 5 is inserted into the socket of the lifting rod, and then the other rod segment is also inserted into the socket of the lifting rod by bending inward. After both are inserted, the distance-increasing ring 5 is restored to its original shape, so that the distance-increasing ring 5 can be swung on the lifting rod, and the two will not separate.

[0028] The connecting hook 42 is configured as a rod-shaped component, which is formed by bending a connecting portion 421 and a hook portion 422. The connecting portion 421 has a triangular configuration and is formed with a hanging node 421 so that it can be hung on the distance increasing ring 5. The hook portion 422 is arranged vertically to the connecting portion 421. It is hooked on the connecting nut 3111 with a small outer diameter and also abuts against the lower end face of the connecting nut 3111 with a large outer diameter. Such an arrangement facilitates the forming of the connecting hook 42. The connecting portion 421 can obtain the hanging node 4211 hung on the distance increasing ring 5 through the setting of the triangular configuration, and can also adapt to the outer diameter of the connecting nut 3111 with a small outer diameter. The hook portion 422 is derived from the connecting portion 421, so it can also adapt to the outer diameter of the connecting nut 3111 with a small outer diameter, that is, it is tightly plugged into the connecting nut 3111.

[0029] The opening distance actuator 43 includes a cylinder 431 and a manual switch valve 432. The cylinder 431 is arranged on the upper end surface of the grasping tube 41, and its lifting rod extends into the grasping tube 41. The manual switch valve 432 is arranged on one side of the cylinder 431 and is pneumatically connected to the cylinder 431. The cylinder 431 is used to provide pulling force, and the manual switch valve 432 is used to control the activation of the cylinder 431, so that it can adapt to manual operation.

[0030] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A device for spacing a vacuum interrupter, comprising a stand (2) for placing the vacuum interrupter (1), characterized in that: The placing rack (2) has an upper area for placing the items to be pulled (21) and a lower area for placing the items to be pulled (22). The area for placing the items to be pulled (21) and the area for placing the items to be pulled (22) are both provided with two symmetrically distributed connecting cross bars (23) on the placing rack (2). A positioning plate (24) is provided between the two connecting cross bars (23). The positioning plate (24) has a plurality of positioning sockets (241) for providing different placement positions for the vacuum interrupter (1). A tool for pulling apart the items (3) is provided on the movable conductive rod of the vacuum interrupter (1). A distance-pulling tool (3) is provided on the tool for pulling apart the items (3). A distance-pulling component (4) hooked and matched with the tool is provided on the tool for pulling apart the items (3).

2. The vacuum interrupter spacing device according to claim 1, characterized in that: The distance-pulling tool (3) is locked with the movable conductive rod of the vacuum interrupter (1) via a locking structure, and the locking or unlocking of the locking structure is achieved by a connecting screw (31) provided on the distance-pulling tool (3), and a hooking portion (311) is provided on the connecting screw (31) for hooking with the distance-pulling component (4).

3. The vacuum interrupter spacing device according to claim 2, characterized in that: The hooking portion (311) includes two connecting nuts (3111) of different outer diameters, wherein the connecting nut (3111) of small outer diameter abuts against the upper end face of the distance-pulling tool (3), and the connecting nut (3111) of large outer diameter abuts against the upper end face of the connecting nut (3111) of small outer diameter, and the size difference is utilized to enable the distance-pulling component (4) to be hooked on the connecting nut (3111) of small outer diameter while also abutting against the lower end face of the connecting nut (3111) of large outer diameter.

4. The vacuum interrupter spacing device according to claim 3, characterized in that: The distance opening component (4) includes a gripping tube (41), a connecting hook (42), and a distance opening actuator (43). The gripping tube (41) abuts against the upper end surface of the distance opening tool (3) when performing distance opening. The distance opening actuator (43) is arranged on the upper end surface of the gripping tube (41) and its lifting rod extends into the gripping tube (41). The upper end of the connecting hook (42) is connected to the lifting rod of the distance opening actuator (43), and the lower end is hooked to the hooking portion (311).

5. The vacuum interrupter spacing device according to claim 4, characterized in that: A distance increasing ring (5) is also provided on the lifting rod of the distance actuator (43), wherein the upper end of the distance increasing ring (5) is rotatably engaged with the lifting rod and the lower end is connected to the connecting hook (42).

6. The vacuum interrupter spacing device according to claim 5, characterized in that: The connecting hook (42) is configured as a rod-shaped component, which is formed by bending to form a connecting portion (421) and a hook portion (422). The connecting portion (421) is triangular in configuration and is formed with a hanging node (4211) that allows it to be hung on the distance-increasing ring (5). The hook portion (422) is arranged perpendicular to the connecting portion (421), and is hooked on the connecting nut (3111) with a small outer diameter and also abuts against the lower end surface of the connecting nut (3111) with a large outer diameter.

7. The vacuum interrupter spacing device according to claim 5, characterized in that: The opening distance actuator (43) includes a cylinder (431) and a manual switch valve (432). The cylinder (431) is arranged on the upper end surface of the grasping tube (41), and its lifting rod extends into the grasping tube (41). The manual switch valve (432) is arranged on one side of the cylinder (431) and is pneumatically connected to the cylinder (431).

Images