Pole-mounted box-type load switch and gas tank with same

Abstract

The invention relates to a pole-mounted box-type load switch and a gas box with the same, and belongs to the technical field of switches, the pole-mounted box-type load switch comprises a fixed plate, a static contact, a moving contact, a static grounding head and a moving grounding head, and the static contact is provided with a power connection static contact and a grounding static contact which are integrally formed and vertically distributed; the moving contact is provided with a grounding moving contact and a grounding moving contact which are electrically connected and vertically distributed; the static grounding head and the grounding static contact are oppositely arranged; and the moving grounding head and the grounding moving contact are oppositely arranged. The static contact and the moving contact are divided into the electricity connection static contact, the grounding static contact, the electric connection contact and the grounding moving contact, then the static grounding head and the moving grounding head are additionally arranged, the static grounding head can be in contact with the grounding static contact, the moving grounding head can be in contact with the grounding moving contact, and after the electricity connection static contact and the electric connection contact are switched on, the static grounding head and the moving grounding head can be in contact with the grounding moving contact. The static grounding head is contacted with the power connection static contact, and the moving grounding head is contacted with the grounding moving contact, so that closing grounding is realized, and the safety of later maintenance operation is ensured.

Description

Technical Field

[0001] This invention relates to the field of switch technology, and in particular to a pole-mounted box-type load switch and a gas box having the same. Background Technology

[0002] Most pole-mounted load switches on the market are two-position load switches, and none of them have an independent grounding switch inside the box. The breaking method is generally vacuum breaking or SF6 gas breaking. When maintenance is required, the load switch must first be tripped. For overhead lines, after confirming the line is de-energized, maintenance personnel must install additional grounding wires on one or both sides of the load switch. For cable lines, the upstream or downstream of the load switch needs to be grounded to ensure the line is grounded, making maintenance extremely inconvenient. Furthermore, there is a risk of accidental electric shock due to insecure grounding wire connections or failure to install grounding wires due to personnel error; additionally, installing and removing grounding wires increases maintenance time, thus increasing power outage time.

[0003] Therefore, how to design a pole-mounted box-type load switch that is easy to maintain, safe to use, and convenient to ground, as well as a gas box with it, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] This invention provides a pole-mounted box-type load switch, which solves the technical problems of inconvenient maintenance, inconvenient grounding, and easy electric shock hazard of existing pole-mounted box-type load switches.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: a pole-mounted box-type load switch, comprising: a fixed plate, a stationary contact, a moving contact, a stationary grounding head, and a moving grounding head. The stationary contact has an integrally formed and vertically distributed energized stationary contact and a grounding stationary contact, both of which are fixed to the fixed plate. The moving contact has an electrically connected and vertically distributed energized contact and a grounding moving contact. The energized contact is arranged opposite to the energized stationary contact and slides back and forth on the fixed plate under external force from away from the energized stationary contact to closer to it. The grounding moving contact is fixed to the fixed plate. The stationary grounding contact is opposite to the grounding stationary contact. The grounding head is arranged and subjected to external force to slide back and forth on the fixed plate from near the grounding stationary contact to away from the grounding stationary contact, so that after the electric contact and the electric contact are opened, the stationary grounding head and the grounding stationary contact are closed; the moving grounding head is arranged opposite to the grounding moving contact and is subjected to external force to slide back and forth on the fixed plate from near the grounding moving contact to away from the grounding moving contact, so that after the electric contact and the electric contact are opened, the moving grounding head and the grounding moving contact are closed.

[0006] The beneficial effects of this invention are: it improves the structure of traditional pole-mounted box-type load switches by first dividing the stationary and moving contacts into energized stationary contacts, grounded stationary contacts, energized contacts, and grounded moving contacts, and then adding stationary grounding heads and moving grounding heads. Since the stationary grounding head can contact the grounded stationary contact and the moving grounding head can contact the grounded moving contact, after the energized stationary contact and the energized contact are closed, the stationary grounding head can contact the energized stationary contact and the moving grounding head can contact the grounded moving contact, thus achieving grounding upon closing. This ensures the safety of subsequent maintenance operations and prevents accidental electric shock.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, it also includes a closing guide rail, which is arranged opposite to the energized stationary contact and fixed on the fixed plate along the movement direction of the energized electric contact; the energized electric contact slides on the closing guide rail.

[0009] The further beneficial effect of adopting the above is that by using the electric contact to slide on the closing guide rail, the electric contact can be guided to make contact with the static contact.

[0010] Furthermore, it also includes a closing shield, which is a ring-shaped structure and is fitted over the electric contact.

[0011] Furthermore, it also includes a closing drive assembly, which includes a crank arm, a closing rocker arm, and a fixed plate. The fixed plate is fixed on the fixed plate on the side of the closing guide rail away from the energized stationary contact. One end of the closing rocker arm rotates on the fixed plate about the vertical axis of the fixed plate. One end of the crank arm is fixed to the other end of the closing rocker arm, and the other end is fixed to the energized contact, so that while driving the closing rocker arm to rotate, the energized contact slides in conjunction with it.

[0012] The further beneficial effect of adopting the above is that: manually driving the closing rocker arm to rotate can drive the electric contact to move in conjunction with the crank arm, so as to realize the closing contact between the electric contact and the stationary contact.

[0013] Furthermore, it also includes a static guide drive assembly, which includes a static grounding rail and a static grounding rocker arm. The static grounding rail is arranged opposite to the static grounding contact and is fixed on the fixed plate along the movement direction of the static grounding head. The static grounding head slides on the static grounding rail. One end of the static grounding rocker arm is rotatably connected to the fixed plate about the vertical axis of the fixed plate, and the other end is fixed to the static grounding head.

[0014] The further beneficial effect of adopting the above is that sliding the static grounding head on the static grounding rail facilitates the static grounding head to make contact with the grounding static contact when closing, thereby realizing the opening grounding of the grounding static contact.

[0015] Furthermore, it also includes a static grounding shield, which is a ring-shaped structure and is fitted onto one end of the static grounding rail corresponding to the static grounding contact; the static grounding head slides through the static grounding shield.

[0016] Furthermore, it also includes a dynamic guide drive assembly, which includes a dynamic grounding guide rail and a dynamic grounding rocker arm. The dynamic grounding guide rail is arranged opposite to the grounding dynamic contact and is fixed on the fixed plate along the movement direction of the dynamic grounding head. The dynamic grounding head slides on the dynamic grounding guide rail. One end of the dynamic grounding rocker arm is rotatably connected to the fixed plate about the vertical axis of the fixed plate, and the other end is fixed to the dynamic grounding head.

[0017] The further beneficial effect of adopting the above is that sliding the dynamic grounding head on the dynamic grounding rail facilitates the closing contact between the dynamic grounding head and the grounding moving contact, thereby realizing the opening grounding of the grounding moving contact.

[0018] Furthermore, it also includes a dynamic grounding shield, which is a ring-shaped structure and is fitted onto one end of the dynamic grounding rail corresponding to the grounding contact; the dynamic grounding head slides through the dynamic grounding shield.

[0019] In addition, a gas box is provided, including a box body and the aforementioned pole-mounted box-type load switch, wherein the fixing plate is fixed to the inner side wall of the box body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a pole-mounted box-type load switch of the present invention, showing the opening of the electric contact and the stationary contact, the closing of the stationary grounding contact and the stationary grounding contact, and the closing of the moving grounding contact and the moving grounding contact. Figure 2 This is a schematic diagram of the structure of a pole-mounted box-type load switch of the present invention, showing the closing of the electric contact and the stationary contact, the opening of the stationary grounding contact and the stationary grounding contact, and the opening of the moving grounding contact and the moving grounding contact. Figure 3 This is a schematic diagram of the structure of a pole-mounted box-type load switch of the present invention, showing the tripping of the electric contact and the stationary contact, the tripping of the stationary grounding contact and the stationary grounding contact, and the tripping of the moving grounding contact and the moving grounding contact. Figure 4 This is a schematic diagram of the structure of a pole-mounted box-type load switch of the present invention, showing the opening of the electric contact and the stationary contact, the opening of the stationary grounding contact and the stationary grounding contact, and the closing of the moving grounding contact and the moving grounding contact.

[0021] Figure 5This is a schematic diagram of the structure of a pole-mounted box-type load switch installed in a gas box according to the present invention.

[0022] The attached diagram lists the components represented by each number as follows: 1. Fixed plate; 2. Stationary contact; 21. Electrically connected stationary contact; 22. Grounding stationary contact; 3. Moving contact; 31. Electrically connected contact; 32. Grounding moving contact; 4. Stationary grounding head; 5. Moving grounding head; 6. Closing guide rail; 7. Closing shield; 8. Closing drive assembly; 81. Crank arm; 82. Closing rocker arm; 83. Fixed plate; 9. Stationary guide drive assembly; 91. Stationary grounding guide rail; 92. Stationary grounding rocker arm; 10. Stationary grounding shield; 11. Moving guide drive assembly; 111. Moving grounding guide rail; 112. Moving grounding rocker arm; 12. Moving grounding shield; 13. Gas box. Detailed Implementation

[0023] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a pole-mounted box-type load switch includes: a fixed plate 1, a stationary contact 2, a moving contact 3, a stationary grounding head 4, and a moving grounding head 5. The stationary contact 2 has an integrally formed and vertically distributed energized stationary contact 21 and a grounding stationary contact 22, both of which are fixed to the fixed plate 1. The moving contact 3 has an electrically connected and vertically distributed energized contact 31 and a grounding moving contact 32. The energized contact 31 is arranged opposite to the energized stationary contact 21 and slides back and forth on the fixed plate 1 under external force from the direction away from the energized stationary contact 21 to the direction close to the energized stationary contact 21. The grounding moving contact... 32 is fixed on the fixed plate 1; the stationary grounding head 4 is arranged opposite to the stationary grounding contact 22 and slides back and forth on the fixed plate 1 in the direction away from the stationary grounding contact 22 and closer to the stationary grounding contact 22 under external force, so that after the electric contact 31 and the stationary grounding contact 21 are opened, the stationary grounding head 4 and the stationary grounding contact 22 are closed; the moving grounding head 5 is arranged opposite to the moving grounding contact 32 and slides back and forth on the fixed plate 1 in the direction away from the moving grounding contact 32 and closer to the moving grounding contact 32 under external force, so that after the electric contact 31 and the stationary grounding contact 21 are opened, the moving grounding head 5 and the moving grounding contact 32 are closed.

[0025] like Figure 2 As shown, in some specific embodiments, a closing guide rail 6 may also be included. The closing guide rail 6 is arranged opposite to the energized static contact 21 and is fixed on the fixed plate 1 along the movement direction of the energized electric contact 31; the energized electric contact 31 slides on the closing guide rail 6.

[0026] like Figure 1 As shown, in some specific embodiments, a closing shield 7 is also included, which is a ring structure and is fitted around the electric contact 31.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some specific embodiments, a closing drive assembly 8 may also be included. The closing drive assembly 8 includes a crank arm 81, a closing rocker arm 82, and a fixed plate 83. The fixed plate 83 is fixed on the fixed plate 1 on the side of the closing guide rail 6 away from the energized stationary contact 21. One end of the closing rocker arm 82 rotates on the fixed plate 83 about the vertical axis of the fixed plate 1. One end of the crank arm 81 is fixed to the other end of the closing rocker arm 82, and the other end is fixed to the energized contact 31, so that while driving the closing rocker arm 82 to rotate, the energized contact 31 slides in conjunction.

[0028] like Figure 1 As shown, in some specific embodiments, a static guide drive assembly 9 may also be included. The static guide drive assembly 9 includes a static grounding rail 91 and a static grounding rocker arm 92. The static grounding rail 91 is arranged opposite to the static grounding contact 22 and is fixed on the fixed plate 1 along the movement direction of the static grounding head 4. The static grounding head 4 slides on the static grounding rail 91. One end of the static grounding rocker arm 92 is rotatably connected to the fixed plate 1 with the vertical axis of the fixed plate 1 as the axis, and the other end is fixed to the static grounding head 4.

[0029] like Figure 1 As shown, in some specific embodiments, a static grounding shield 10 may also be included. The static grounding shield 10 has a ring-shaped structure and is fitted onto one end of the static grounding rail 91 corresponding to the static grounding contact 22. The static grounding head 4 slides through the static grounding shield 10.

[0030] like Figure 1 As shown, in some specific embodiments, a dynamic guide drive assembly 11 may also be included. The dynamic guide drive assembly 11 includes a dynamic grounding guide rail 111 and a dynamic grounding rocker arm 112. The dynamic grounding guide rail 111 is arranged opposite to the grounding dynamic contact 32 and is fixed on the fixed plate 1 along the movement direction of the dynamic grounding head 5. The dynamic grounding head 5 slides on the dynamic grounding guide rail 111. One end of the dynamic grounding rocker arm 112 is rotatably connected to the fixed plate 1 with the vertical axis of the fixed plate 1 as the axis, and the other end is fixed to the dynamic grounding head 5.

[0031] like Figure 1 As shown, in some specific embodiments, a dynamic grounding shield 12 is also included. The dynamic grounding shield 12 has a ring structure and is sleeved on one end of the dynamic grounding rail 111 corresponding to the dynamic grounding contact 32. The dynamic grounding head 5 slides through the dynamic grounding shield 12.

[0032] In addition, a gas box is provided, including a box body 13 and a pole-mounted box-type load switch, with a fixing plate 1 fixed to the inner side wall of the box body 13.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pole-mounted box-type load switch, characterized in that, include: Fixing plate (1) The stationary contact (2) has an integrally formed and vertically distributed energized stationary contact (21) and grounded stationary contact (22), both of which are fixed on the fixing plate (1). The moving contact (3) has an electrically connected and vertically distributed electric contact (31) and grounding moving contact (32). The electric contact (31) is arranged opposite to the electric stationary contact (21) and slides back and forth on the fixed plate (1) under external force from away from the electric stationary contact (21) to close to the electric stationary contact (21). The grounding moving contact (32) is fixed on the fixed plate (1). A static grounding head (4) is arranged opposite to the static grounding contact (22) and is subjected to external force to slide back and forth on the fixed plate (1) from away from the static grounding contact (22) to close to the static grounding contact (22), so that after the electric contact (31) and the electric contact (21) are disconnected, the static grounding head (4) and the static grounding contact (22) are closed. The moving grounding head (5) is arranged opposite to the moving grounding contact (32) and is subjected to external force to slide back and forth on the fixed plate (1) from away from the moving grounding contact (32) to close to the moving grounding contact (32), so that after the electric contact (31) and the static contact (21) are disconnected, the moving grounding head (5) and the moving grounding contact (32) are closed.

2. A pole-mounted box-type load switch according to claim 1, characterized in that, It also includes a closing guide rail (6), which is arranged opposite to the static contact (21) and fixed on the fixed plate (1) along the movement direction of the electric contact (31); the electric contact (31) slides on the closing guide rail (6).

3. A pole-mounted box-type load switch according to claim 2, characterized in that, It also includes a closing shield (7), which is a ring structure and is fitted around the electric contact (31).

4. A pole-mounted box-type load switch according to claim 2, characterized in that, It also includes a closing drive assembly (8), which includes a crank arm (81), a closing rocker arm (82), and a fixed plate (83). The fixed plate (83) is fixed on the fixed plate (1) on the side of the closing guide rail (6) away from the energized static contact (21). One end of the closing rocker arm (82) rotates on the fixed plate (83) with the vertical axis of the fixed plate (1). One end of the crank arm (81) is fixed on the other end of the closing rocker arm (82), and the other end is fixed on the energized contact (31), so that while driving the closing rocker arm (82) to rotate, the energized contact (31) slides in conjunction.

5. A pole-mounted box-type load switch according to claim 1, characterized in that, It also includes a static guide drive assembly (9), which includes a static grounding guide rail (91) and a static grounding rocker arm (92). The static grounding guide rail (91) is arranged opposite to the static grounding contact (22) and is fixed on the fixed plate (1) along the movement direction of the static grounding head (4). The static grounding head (4) slides on the static grounding guide rail (91). One end of the static grounding rocker arm (92) is rotatably connected to the fixed plate (1) with the vertical axis of the fixed plate (1) as the axis, and the other end is fixed on the static grounding head (4).

6. A pole-mounted box-type load switch according to claim 5, characterized in that, It also includes a static grounding shield (10), which is a ring structure and is fitted on the static grounding rail (91) at one end corresponding to the grounding static contact (22); the static grounding head (4) slides through the static grounding shield (10).

7. A pole-mounted box-type load switch according to claim 1, characterized in that, It also includes a dynamic guide drive assembly (11), which includes a dynamic grounding guide rail (111) and a dynamic grounding rocker arm (112). The dynamic grounding guide rail (111) is arranged opposite to the grounding dynamic contact (32) and is fixed on the fixed plate (1) along the movement direction of the dynamic grounding head (5). The dynamic grounding head (5) slides on the dynamic grounding guide rail (111). One end of the dynamic grounding rocker arm (112) is rotatably connected to the fixed plate (1) with the vertical axis of the fixed plate (1) as the axis, and the other end is fixed on the dynamic grounding head (5).

8. A pole-mounted box-type load switch according to claim 7, characterized in that, It also includes a dynamic grounding shield (12), which is a ring structure and is fitted on one end of the dynamic grounding rail (111) corresponding to the grounding contact (32); the dynamic grounding head (5) slides through the dynamic grounding shield (12).

9. A gas box, characterized in that, Includes a housing (13) and a pole-mounted load switch as described in any one of claims 1-8, wherein the fixing plate (1) is fixed to the inner side wall of the housing (13).

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