Separable vacuum contactor with gas-insulated switchgear

Abstract

The utility model relates to the technical field of vacuum switches, in particular to a separable vacuum contactor with a gas-filled cabinet, which comprises a sealed gas tank, a vacuum arc-extinguishing chamber, an electromagnetic operating mechanism and a connecting rod assembly, the vacuum arc-extinguishing chamber is arranged inside the sealed gas tank, and a moving contact and a static contact are arranged in the vacuum arc-extinguishing chamber; the electromagnetic operating mechanism is used for being installed on one side of the outer portion of the sealed air box. The sealing air box is provided with a sliding hole, the connecting rod assembly penetrates through the sliding hole, one end of the connecting rod assembly is connected with the electromagnetic operating mechanism, and the other end of the connecting rod assembly is connected with the moving contact in the vacuum arc-extinguishing chamber; wherein the electromagnetic operating mechanism is arranged outside the sealed gas tank, so that when the electromagnetic operating mechanism breaks down, maintenance can be directly carried out without opening the sealed gas tank, operation of equipment in the sealed gas tank is not affected, the structure is simple, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum switches, in particular to a detachable vacuum contactor equipped with a gas charging cabinet. Background Art

[0002] The vacuum contactor for high-voltage gas-filled cabinet is a control switch for high-voltage lines, used to control electrical equipment such as high-voltage motors and transformers. In the prior art, 10kV and 35kV gas-filled cabinets are widely used due to their small size and strong environmental adaptability, and all of their internal components are arranged in SF6 gas or environmentally friendly gas.

[0003] At present, the vacuum contactor and its operating mechanism of the gas charging cabinet are all sealed in a sealed gas box. If the electromagnetic operating mechanism fails, it is necessary to open the sealed gas box for maintenance, which is not only inconvenient for maintenance, but also affects the reliability of on-site operation. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the vacuum contactor and the operating mechanism of the gas charging cabinet are sealed in a sealed gas box, and the sealed gas box needs to be opened to inspect the electromagnetic operating mechanism, which makes the inspection inconvenient and affects the reliability of on-site operation.

[0005] In order to solve the above problems, the utility model proposes the following technical solutions:

[0006] A detachable vacuum contactor equipped with a gas cabinet, comprising a sealed gas box, a vacuum interrupter, an electromagnetic operating mechanism and a connecting rod assembly, wherein the vacuum interrupter is arranged inside the sealed gas box, and a moving contact and a static contact are arranged inside the vacuum interrupter;

[0007] The electromagnetic operating mechanism is used to be installed on one side of the outside of the sealed gas box; a sliding hole is provided on the sealed gas box, the connecting rod assembly passes through the sliding hole, one end of the connecting rod assembly is connected to the electromagnetic operating mechanism, and the other end of the connecting rod assembly is connected to the moving contact in the vacuum arc extinguishing chamber; the electromagnetic operating mechanism is used to drive the connecting rod assembly to move, so as to drive the moving contact to be disconnected or connected with the static contact.

[0008] The utility model provides a detachable vacuum contactor with an inflatable cabinet, which has, compared with the prior art, but is not limited to the following beneficial effects:

[0009] The vacuum arc extinguishing chamber is arranged inside the sealed gas box, that is, the primary high-voltage live part of the vacuum contactor is installed in the gas chamber, and the electromagnetic operating mechanism is used to be installed on one side of the outside of the sealed gas box, that is, the electromagnetic operating mechanism and the vacuum contactor body are separate structures, and the two are connected by a connecting rod assembly, and the connecting rod assembly passes through the sliding hole and extends into the vacuum arc extinguishing chamber. The electromagnetic operating mechanism drives the connecting rod assembly to move to drive the moving contact and the static contact to disconnect or conduct; wherein, the electromagnetic operating mechanism is arranged outside the sealed gas box, which not only allows the electromagnetic operating mechanism to be directly repaired without opening the sealed gas box when a fault occurs, but also does not affect the operation of the equipment inside the sealed gas box, and has a simple structure and is easy to use.

[0010] Preferably, the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod is rotatably connected to the electromagnetic operating mechanism via a first rotating shaft, the electromagnetic operating mechanism is used to drive one end of the first connecting rod to rotate, and the other end of the first connecting rod is hinged to the second connecting rod; the second connecting rod passes through the sliding hole and is slidably connected to the sliding hole;

[0011] The third connecting rod is rotatably connected to the vacuum interrupter chamber via a second rotating shaft, one end of the second connecting rod located in the sealed gas box extends into the vacuum interrupter chamber and is hinged to one end of the third connecting rod, and the other end of the third connecting rod is connected to the moving contact in the vacuum interrupter chamber.

[0012] Preferably, the connecting rod assembly also includes a bellows, which is sleeved on the outside of the second connecting rod and located outside the sealed air box, one end of the bellows is sealed connected to the outer wall of the second connecting rod, and the other end of the bellows is sealed connected to the outer wall of the sealed air box.

[0013] Preferably, the connecting rod assembly further comprises a sealing gasket, the sealing gasket is penetrated by a sealing hole, the sealing gasket is arranged on the inner wall of the sealing air box and the sealing hole is aligned with the sliding hole, and the second connecting rod penetrates the sealing hole.

[0014] Preferably, the third connecting rod includes a first rod and a second rod, the first rod and the second rod are connected to form an "L"-shaped structure, and the second rotating shaft passes through the middle of the connection between the first rod and the second rod and is installed in the vacuum interrupter.

[0015] Preferably, the first rod is connected to the second connecting rod, the second rod is movably connected to the moving contact, and the second connecting rod is used to drive the first rod to approach the inner wall of the vacuum arc chamber or away from the inner wall of the vacuum arc chamber, so that the second rod drives the moving contact to disconnect or connect with the static contact.

[0016] Preferably, the electromagnetic operating mechanism includes an electromagnetic box, a driving electromagnetic structure and an iron block, the electromagnetic box is fixed to one side of the sealed air box by bolts; the driving electromagnetic structure is installed in the electromagnetic box, the iron block is installed at one end of the first connecting rod, and the driving electromagnetic structure is used to drive the iron block to drive the first connecting rod to rotate.

[0017] Preferably, the connecting rod assembly further comprises a reset elastic member, and the reset elastic member enables the end of the first connecting rod having the iron block to maintain a tendency to move away from the driving electromagnetic structure.

[0018] Preferably, the return elastic member comprises a return spring, one end of the return spring is connected to the inner wall of the electromagnetic box, and the other end of the return spring is connected to the end of the first connecting rod provided with the iron block.

[0019] Preferably, the reset elastic member comprises a reset torsion spring, which is sleeved on the outside of the first rotating shaft, and one end of the reset torsion spring is connected to the side wall of the electromagnetic box, and the other end of the reset torsion spring is connected to the first connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The overall structure of the detachable vacuum contactor equipped with the gas charging cabinet of the utility model embodiment is shown in FIG. Figure 1 ;

[0021] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Description of reference numerals:

[0023] 1 sealed gas box, 10 sliding hole, 2 vacuum interrupter, 3 electromagnetic operating mechanism, 31 electromagnetic box, 32 driving electromagnetic structure, 4 connecting rod assembly, 41 first connecting rod, 42 second connecting rod, 43 third connecting rod, 431 first rod, 432 second rod, 44 bellows, 45 sealing gasket. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] It should be noted that, in the coordinate system XYZ provided in this document, the positive direction of the X-axis represents the right, the reverse direction of the X-axis represents the left, the positive direction of the Y-axis represents the front, the reverse direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom; the meanings of the Z-axis, X-axis, and Y-axis 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] See also Figure 1-Figure 2 The utility model provides a detachable vacuum contactor equipped with a gas cabinet, comprising a sealed gas box 1, a vacuum arc extinguishing chamber 2, an electromagnetic operating mechanism 3 and a connecting rod assembly 4, wherein the vacuum arc extinguishing chamber 2 is arranged inside the sealed gas box 1, and the vacuum arc extinguishing chamber 2 has a moving contact and a static contact; the electromagnetic operating mechanism 3 is used to be installed on one side of the outside of the sealed gas box 1; a sliding hole 10 is provided on the sealed gas box 1, and the connecting rod assembly 4 passes through the sliding hole 10, one end of the connecting rod assembly 4 is connected to the electromagnetic operating mechanism 3, and the other end of the connecting rod assembly 4 is connected to the moving contact in the vacuum arc extinguishing chamber 2; the electromagnetic operating mechanism 3 is used to drive the connecting rod assembly 4 to move, so as to drive the moving contact to be disconnected or connected with the static contact.

[0028] In this embodiment, the vacuum arc extinguishing chamber 2 is arranged inside the sealed gas box 1, that is, the primary high-voltage live body part of the vacuum contactor is installed in the gas chamber, and the electromagnetic operating mechanism 3 is used to be installed on one side of the outside of the sealed gas box 1, that is, the electromagnetic operating mechanism 3 and the vacuum contactor body are separate structures, and the two are connected by the connecting rod assembly 4, and the connecting rod assembly 4 passes through the sliding hole 10 and extends into the vacuum arc extinguishing chamber 2 to meet the sealing requirements of the sealed gas box 1. The electromagnetic operating mechanism 3 drives the connecting rod assembly 4 to move to drive the moving contact and the static contact to disconnect or conduct; wherein, the electromagnetic operating mechanism 3 is arranged outside the sealed gas box 1, not only when the electromagnetic operating mechanism 3 fails, it can be directly repaired without opening the sealed gas box 1, and the setting of the connecting rod assembly 4 realizes the transmission between the inside and outside of the sealed gas box 1, meets the sealing requirements of the sealed gas box 1, and does not affect the operation of the internal equipment of the sealed gas box 1, and has a simple structure and is easy to use.

[0029] See also Figure 2Preferably, the connecting rod assembly 4 includes a first connecting rod 41, a second connecting rod 42 and a third connecting rod 43, the first connecting rod 41 is rotatably connected to the electromagnetic operating mechanism 3 through a first rotating shaft, the electromagnetic operating mechanism 3 is used to drive one end of the first connecting rod 41 to rotate, and the other end of the first connecting rod 41 is hinged to the second connecting rod 42; the second connecting rod 42 passes through the sliding hole 10 and is slidably connected to the sliding hole 10; the third connecting rod 43 is rotatably connected to the vacuum arc chamber 2 through a second rotating shaft, one end of the second connecting rod 42 located in the sealed gas box 1 extends into the vacuum arc chamber 2 and is hinged to one end of the third connecting rod 43, and the other end of the third connecting rod 43 is connected to the moving contact in the vacuum arc chamber 2.

[0030] Specifically, the moving contact is slidably connected in the vacuum arc chamber 2, and the third connecting rod 43 is movably connected to the moving contact; the vacuum arc chamber 2 is provided with an opening structure on the side facing the sliding hole 10, and the second connecting rod 42 extends from the opening structure into the vacuum arc chamber 2.

[0031] In this embodiment, the electromagnetic operating mechanism 3 works to drive one end of the first connecting rod 41 to rotate around the first rotating shaft, so that the end of the first connecting rod 41 connected to the second connecting rod 42 rotates toward the sealed gas box 1; since the other end of the first connecting rod 41 is hinged to the second connecting rod 42, the second connecting rod 42 passes through the sliding hole 10 and is slidably connected to the sliding hole 10, and then the end of the first connecting rod 41 connected to the second connecting rod 42 rotates toward the sealed gas box 1, so that the second connecting rod 42 moves toward the vacuum arc chamber 2; since the third connecting rod 43 is rotatably connected to the vacuum arc chamber 2 through the second rotating shaft, the end of the second connecting rod 42 located in the sealed gas box 1 extends into the vacuum arc chamber 2 and is hinged to one end of the third connecting rod 43, and the other end of the third connecting rod 43 is connected to the moving contact in the vacuum arc chamber 2, so that the third connecting rod 43 rotates to push the moving contact to move toward the static contact, so that the moving contact and the static contact are conductive.

[0032] See also Figure 2 Preferably, the connecting rod assembly 4 also includes a bellows 44, which is sleeved on the outside of the second connecting rod 42 and located outside the sealed air box 1, one end of the bellows 44 is sealed connected to the outer wall of the second connecting rod 42, and the other end of the bellows 44 is sealed connected to the outer wall of the sealed air box 1.

[0033] Specifically, one end of the bellows 44 which is sealed and connected to the outer wall of the sealed air box 1 is covered outside the sliding hole 10 to prevent air leakage from occurring in the sliding hole 10 .

[0034] In this embodiment, since the bellows 44 has the characteristics of wrinkles, the end of the bellows 44 connected to the second connecting rod 42 can move with the second connecting rod 42. That is to say, the setting of the bellows 44 can cooperate with the movement of the second connecting rod 42, and is beneficial to further seal the sliding hole 10 to prevent air leakage from occurring in the sliding hole 10 and affecting the operation of the equipment inside the sealed air box 1.

[0035] See also Figure 2 Preferably, the connecting rod assembly 4 also includes a sealing gasket 45, a sealing hole is penetrated on the sealing gasket 45, the sealing gasket 45 is arranged on the inner wall of the sealing air box 1 and the sealing hole is aligned with the sliding hole 10, and the second connecting rod 42 passes through the sealing hole.

[0036] Specifically, the sealing gasket 45 is fixed to the inner wall of the sealed air box 1 by bolts, and the thickness of the sealing gasket 45 is greater than the thickness of the side wall of the sealed air box 1 .

[0037] In this embodiment, the provision of the sealing gasket 45 is beneficial to improving the sealing effect at the sliding hole 10 on the one hand, and on the other hand, the sealing gasket 45 has a guiding function, so that the second connecting rod 42 moves more smoothly without position displacement.

[0038] See also Figure 2 Preferably, the third connecting rod 43 includes a first rod 431 and a second rod 432, the first rod 431 and the second rod 432 are connected in an "L" shape, and the second rotating shaft passes through the middle of the connection between the first rod 431 and the second rod 432 and is installed in the vacuum arc chamber 2.

[0039] Specifically, the second rotating shaft is arranged in the vacuum interrupter 2 near the direction of the opening structure and in front of the opening structure.

[0040] The static contact is arranged at the front position inside the vacuum interrupter 2, and the moving contact is located behind the static contact.

[0041] See also Figure 2Preferably, the first rod 431 is connected to the second connecting rod 42, and the second connecting rod 432 is movably connected to the moving contact. The second connecting rod 42 is used to drive the first rod 431 to approach the inner wall of the vacuum interrupter 2 or away from the inner wall of the vacuum interrupter 2, so that the second rod 432 drives the moving contact to disconnect or connect with the static contact.

[0042] In this embodiment, the first rod 431 is connected to the second connecting rod 42, and the second rod 432 is movably connected to the moving contact. The first rod 431 and the second rod 432 are connected to form an "L"-shaped structure. When the second connecting rod 42 moves toward the inside of the vacuum interrupter 2, the second connecting rod 42 pushes the first rod 431 away from the inner wall of the vacuum interrupter 2, so that the second rod 432 pushes the moving contact to move in the direction of driving the static contact to conduct with the static contact.

[0043] See also Figure 1 Preferably, the electromagnetic operating mechanism 3 includes an electromagnetic box 31, a driving electromagnetic structure 32 and an iron block, the electromagnetic box 31 is fixed to one side of the sealed air box 1 by bolts; the driving electromagnetic structure 32 is installed in the electromagnetic box 31, and the iron block is installed at one end of the first connecting rod 41, and the driving electromagnetic structure 32 is used to drive the iron block to drive the first connecting rod 41 to rotate.

[0044] Specifically, a through hole is provided on the side wall of the electromagnetic box 31, the first rotating shaft is arranged close to the through hole, the first connecting rod 41 is rotatably installed in the electromagnetic box 31 through the first rotating shaft, and one end of the first connecting rod 41 extends from the through hole to the outside of the electromagnetic box 31 and is hinged to the second connecting rod 42; wherein, the first connecting rod 41 extends to the outside of the electromagnetic box 31, which facilitates the transmission of the first connecting rod 41 and the second connecting rod 42, and is also conducive to promoting the miniaturized design of the electromagnetic box 31.

[0045] In this embodiment, the electromagnetic box 31 has dustproof and waterproof functions; when the driving electromagnetic structure 32 is working, the driving electromagnetic structure 32 drives the iron block to drive the first connecting rod 41 to rotate, which has a simple structure and is conducive to reducing investment costs.

[0046] Preferably, the connecting rod assembly 4 further includes a reset elastic member, and the reset elastic member enables the first connecting rod 41 to have one end of the iron block to maintain a tendency to move away from the driving electromagnetic structure 32 .

[0047] In this embodiment, when the driving electromagnetic structure 32 is not working, the iron block is not adsorbed by the driving electromagnetic structure 32, but is affected by the resetting force of the resetting elastic member, so that the iron block is away from the driving electromagnetic structure 32, and then the end of the first connecting rod 41 connected to the second connecting rod 42 drives the second connecting rod 42 to move away from the vacuum arc chamber 2, and the second connecting rod 42 pulls the third connecting rod 43 to rotate, so that the third connecting rod 43 drives the moving contact to disconnect from the static contact.

[0048] Preferably, the return elastic member comprises a return spring, one end of which is connected to the inner wall of the electromagnetic box 31 , and the other end of which is connected to one end of the first connecting rod 41 provided with an iron block.

[0049] In this embodiment, the return spring has a pulling effect on the first connecting rod 41 , so that the first connecting rod 41 maintains a tendency to move away from the driving electromagnetic structure 32 .

[0050] In other embodiments, the reset elastic member includes a reset torsion spring, which is sleeved on the outside of the first rotating shaft, and one end of the reset torsion spring is connected to the side wall of the electromagnetic box 31, and the other end of the reset torsion spring is connected to the first connecting rod 41.

[0051] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A detachable vacuum contactor with an inflatable cabinet, It is characterized in that It comprises a sealed gas box (1), a vacuum interrupter (2), an electromagnetic operating mechanism (3) and a connecting rod assembly (4); the vacuum interrupter (2) is arranged inside the sealed gas box (1); and a moving contact and a stationary contact are provided inside the vacuum interrupter (2); The electromagnetic operating mechanism (3) is used to be installed on one side of the outside of the sealed gas box (1); a sliding hole (10) is provided on the sealed gas box (1), and the connecting rod assembly (4) passes through the sliding hole (10); one end of the connecting rod assembly (4) is connected to the electromagnetic operating mechanism (3), and the other end of the connecting rod assembly (4) is connected to the moving contact in the vacuum arc extinguishing chamber (2); the electromagnetic operating mechanism (3) is used to drive the connecting rod assembly (4) to move, so as to drive the moving contact to be disconnected or connected with the static contact.

2. The detachable vacuum contactor for the gas cabinet according to claim 1, It is characterized in that The connecting rod assembly (4) comprises a first connecting rod (41), a second connecting rod (42) and a third connecting rod (43); the first connecting rod (41) is rotatably connected to the electromagnetic operating mechanism (3) via a first rotating shaft; the electromagnetic operating mechanism (3) is used to drive one end of the first connecting rod (41) to rotate; the other end of the first connecting rod (41) is hinged to the second connecting rod (42); the second connecting rod (42) passes through the sliding hole (10) and is slidably connected to the sliding hole (10); The third connecting rod (43) is rotatably connected to the vacuum arc chamber (2) via a second rotating shaft; one end of the second connecting rod (42) located in the sealed gas box (1) extends into the vacuum arc chamber (2) and is hinged to one end of the third connecting rod (43); the other end of the third connecting rod (43) is connected to the moving contact in the vacuum arc chamber (2).

3. The detachable vacuum contactor for the gas cabinet according to claim 2, It is characterized in that The connecting rod assembly (4) also includes a bellows (44), which is sleeved on the outside of the second connecting rod (42) and is located outside the sealed air box (1), one end of the bellows (44) is sealedly connected to the outer wall of the second connecting rod (42), and the other end of the bellows (44) is sealedly connected to the outer wall of the sealed air box (1).

4. The detachable vacuum contactor for the gas cabinet according to claim 3, It is characterized in that The connecting rod assembly (4) also includes a sealing gasket (45), and a sealing hole is provided through the sealing gasket (45). The sealing gasket (45) is arranged on the inner wall of the sealing air box (1) and the sealing hole is aligned with the sliding hole (10). The second connecting rod (42) passes through the sealing hole.

5. The detachable vacuum contactor for the gas cabinet according to claim 2, It is characterized in that The third connecting rod (43) comprises a first rod (431) and a second rod (432); the first rod (431) and the second rod (432) are connected to form an "L"-shaped structure; the second rotating shaft passes through the middle of the connection between the first rod (431) and the second rod (432) and is installed in the vacuum interrupter (2).

6. The detachable vacuum contactor for the gas cabinet according to claim 5, It is characterized in that The first rod (431) is connected to the second connecting rod (42), and the second rod (432) is movably connected to the moving contact. The second connecting rod (42) is used to drive the first rod (431) to approach the inner wall of the vacuum interrupter (2) or to move away from the inner wall of the vacuum interrupter (2), so that the second rod (432) drives the moving contact to disconnect or connect with the static contact.

7. The detachable vacuum contactor for the gas cabinet according to claim 2, It is characterized in that The electromagnetic operating mechanism (3) comprises an electromagnetic box (31), a driving electromagnetic structure (32) and an iron block. The electromagnetic box (31) is fixed on one side of the sealed air box (1); the driving electromagnetic structure (32) is installed in the electromagnetic box (31), and the iron block is installed on one end of the first connecting rod (41). The driving electromagnetic structure (32) is used to drive the iron block to drive the first connecting rod (41) to rotate.

8. The detachable vacuum contactor for the gas cabinet according to claim 7, It is characterized in that The connecting rod assembly (4) further comprises a reset elastic member, wherein the reset elastic member causes the first connecting rod (41) to have one end of the iron block to maintain a tendency to be away from the driving electromagnetic structure (32).

9. The detachable vacuum contactor for the gas cabinet according to claim 8, It is characterized in that The resetting elastic member comprises a resetting spring, one end of which is connected to the inner wall of the electromagnetic box (31), and the other end of which is connected to an end of the first connecting rod (41) provided with an iron block.

10. The detachable vacuum contactor for the gas cabinet according to claim 8, It is characterized in that The reset elastic member comprises a reset torsion spring, which is sleeved on the outside of the first rotating shaft, and one end of the reset torsion spring is connected to the side wall of the electromagnetic box (31), and the other end of the reset torsion spring is connected to the first connecting rod (41).

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