High-voltage fixed switch cabinet

Abstract

The utility model discloses a high-voltage fixed switch cabinet, which belongs to the technical field of electrical equipment and comprises a circuit breaker chamber and a cable chamber, a horizontal support is arranged between the circuit breaker chamber and the cable chamber, a lightning arrester is arranged on one side, far away from the circuit breaker chamber, of the horizontal support, and the lightning arrester is horizontally arranged on the horizontal support. The horizontal support is used for installing and supporting part of components, the lightning arrester is arranged on the horizontal support, so that the wiring mode in the cabinet body of the switch cabinet can be simplified to the greatest extent, the positions among other components are relatively concentrated, and the lightning arrester is generally located at the bottom of a cable chamber and is farthest from the other components, so that the wiring mode is simplified; according to the scheme, the position of the lightning arrester is reasonably changed, so that the wiring difficulty in the whole switch cabinet body is reduced, and the wiring mode is simplified.

Description

Technical Field

[0001] The utility model relates to an electric cabinet device, more specifically, it relates to a high-voltage fixed switch cabinet. Background Art

[0002] Switchgear plays an important role in the control of power systems. Existing switchgear generally has multiple chambers inside for distributing different circuit components. There is a large extra space inside the cabinet as a whole, but the installation position and wiring method of components in most switchgear still have certain defects, resulting in wiring that is too long or too complicated.

[0003] For example: Chinese patent announcement number CN202111382U, announcement date is January 11, 2012, the name of the utility model is a small high-voltage fixed switchgear, the application discloses a high-voltage fixed switchgear, including a cabinet, the space in the cabinet is divided into a busbar room, a circuit breaker room and a cable room from top to bottom, and an instrument room is arranged on the right side of the busbar room (in front of the cabinet); a mechanical operation locking device is arranged in the middle of the right side of the circuit breaker room (the middle of the front of the cabinet), an integral circuit breaker is installed in the lower part of the circuit breaker room, and an upper isolating switch and a lower isolating switch are arranged in the upper and lower parts of the circuit breaker room respectively; this scheme has the advantage of volume cost saving, but the distribution positions of the components inside it are too scattered, resulting in too long wiring length, consuming a large number of terminal blocks, and also easily leading to a chaotic internal structure of the cabinet and poor aesthetics. Utility Model Content

[0004] The utility model overcomes the problem that the wiring length inside the existing switch cabinet is too long, resulting in a relatively messy interior of the cabinet, and provides a high-voltage fixed switch cabinet. This solution simplifies the wiring inside the switch cabinet by adjusting the positions of some components, thereby improving the aesthetics of the interior of the cabinet.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a high-voltage fixed switch cabinet, including a circuit breaker chamber and a cable chamber, a horizontal support is provided between the circuit breaker chamber and the cable chamber, a lightning arrester is provided on the side of the horizontal support away from the circuit breaker chamber, and the lightning arrester is horizontally arranged on the horizontal support. The horizontal support is used to install and support some components, wherein arranging the lightning arrester on the horizontal support can simplify the wiring method inside the switch cabinet to the greatest extent, because the positions of other components are relatively concentrated, and the lightning arrester is generally located at the bottom of the cable chamber, farthest from the other components, by reasonably changing the position of the lightning arrester, the wiring difficulty inside the entire switch cabinet is reduced, and the wiring method is simplified.

[0006] Preferably, a cable head is provided in the cable room, and the cable head is provided on the side of the cable room away from the circuit breaker, one end of the cable head corresponds to the position of the lightning arrester, and the other end is provided at the bottom of the cable room. The cable head is connected to the current transformer for conducting the circuit, and the wiring terminal of the cable head is also close to the position of the lightning arrester, which reduces the distance between components and facilitates wiring.

[0007] Preferably, a circuit breaker is arranged in the circuit breaker chamber, and the circuit breaker is arranged on the horizontal support. The horizontal support can also support the circuit breaker, and also makes the circuit breaker and the lightning arrester close to each other, which is convenient for wiring.

[0008] Preferably, the system further comprises a busbar room, wherein a current transformer is arranged in the busbar room, and the current transformer is arranged opposite to the circuit breaker. The current transformer in the busbar room is used to convert the primary current into the secondary current, which can be used for measurement and protection sampling.

[0009] Preferably, a sensor is provided below the current transformer, and the sensor is level with the lightning arrester. The sensor, current transformer, lightning arrester and circuit breaker are relatively concentrated, so that the wiring length between components is greatly reduced and the arrangement of the lines is simplified.

[0010] As a preference, the device further comprises an instrument room, wherein the instrument room is provided with wire-passing brackets on both sides. The wire-passing brackets in the instrument room can make the wiring in the instrument room neater, more intuitive, and more fixable, thereby improving the aesthetics.

[0011] Preferably, the invention further comprises a door assembly, wherein the door assembly comprises

[0012] A first door body is located at the top of the switch cabinet, and a microcomputer protector and a live display are provided on the first door body;

[0013] The second door body is located at the lower side of the first door body, and the second door body is provided with a forward observation window and a forward ventilation hole.

[0014] The door assembly is used to open and close the front side of the switch cabinet and is used for normal work. The first door is also the instrument room door, which is used for the opening and closing operations of the instrument room. The microcomputer protector and the power display can monitor and display the parameters of the components in the cabinet, and have a certain protective effect. The second door is the main door at the bottom and middle of the cabinet, which is used for the opening and closing operations of the circuit breaker room and the cable room. The front observation window is used to observe the situation in the chamber on the front side of the cabinet. The forward ventilation holes can ventilate the interior of the cabinet and also have a certain heat dissipation effect to a certain extent.

[0015] Preferably, the invention further comprises a sealing plate assembly, wherein the sealing plate assembly comprises

[0016] A first sealing plate, located on the top of the switch cabinet, wherein a first ventilation hole is provided on the first sealing plate;

[0017] A second sealing plate, located at the lower side of the first sealing plate, wherein a third observation window is provided on the second sealing plate;

[0018] The third sealing plate is located at the lower side of the second sealing plate, and the third sealing plate is provided with a second ventilation hole and a fourth observation window.

[0019] The sealing plate assembly is mainly used for sealing the rear side of the switch cabinet to prevent dust and debris from entering the interior of the switch cabinet, and the ventilation holes on the first sealing plate can ventilate the cabinet and also have a heat dissipation effect to a certain extent; the third observation window on the second sealing plate is used to observe the situation in the rear chamber in the middle of the cabinet; the second ventilation hole on the third sealing plate can also ventilate and dissipate heat inside the cabinet, and the fourth observation window can observe the situation in the rear chamber at the bottom of the cabinet.

[0020] Preferably, the door assembly is rotatably connected to the switch cabinet. The door assembly can be used to open and close the switch cabinet during normal periods. The rotatable connection is conducive to the opening and closing of the door body and is also suitable for frequent opening and closing operations.

[0021] Preferably, the sealing plate assembly is detachably connected to the switch cabinet, and the sealing plate assembly and the switch cabinet can be disassembled and assembled at any time, which can facilitate the inspection and maintenance of the switch cabinet.

[0022] Compared with the prior art, the beneficial effects of the present invention are: (1) the positions of some components are adjusted to simplify the wiring inside the switch cabinet, thereby improving the aesthetics of the interior of the cabinet; (2) the line layout is simplified without increasing the structure, thereby reducing the production cost; (3) the solution is simple, easy to implement, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure inside the cabinet of the utility model.

[0024] Figure 2 It is the front view of the cabinet of the utility model.

[0025] Figure 3 It is the rear view of the cabinet of the utility model.

[0026] In the figure: 1. circuit breaker room, 2. cable room, 3. horizontal support, 4. lightning arrester, 5. cable head, 6. circuit breaker, 7. busbar room, 8. current transformer, 9. sensor, 10. instrument room, 11. line bracket, 12. first door body, 12.1. microcomputer protector, 12.2. live display, 13. second door body, 13.1. front observation window, 13.2. forward ventilation hole, 14. first cover plate, 14.1. first ventilation hole, 15. second cover plate, 15.1. third observation window, 16. third cover plate, 16.1. second ventilation hole, 16.2. fourth observation window, 17. busbar, 18. disconnector, 19. wall bushing, 20. operating mechanism. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0028] Example 1: Figure 1 The high-voltage fixed switchgear shown in the figure comprises a cable chamber 2, a circuit breaker chamber 1, a busbar chamber 7 and an instrument chamber 10. The cable chamber 2 is located at the bottom of the switchgear, the circuit breaker chamber 1 is located at the front middle of the switchgear, the instrument chamber 10 is located at the upper side of the circuit breaker chamber 1, and the busbar chamber 7 is located at the rear middle and upper rear of the switchgear. Figure 1 In the position shown, direction A is the front side of the switch cabinet body, and direction B is the rear side of the switch cabinet body.

[0029] Two parallel horizontal supports 3 are arranged between the cable chamber 2 and the circuit breaker chamber 1. The distance between the two horizontal supports 3 is 275 mm. The horizontal supports 3 are arranged horizontally in the switch cabinet body, and are mainly used to support the circuit breaker 6 in the circuit breaker chamber 1. Since the circuit breaker 6 is large in structure and has a certain weight, two horizontal supports 3 are used to support and fix the circuit breaker 6. A lightning arrester 4 is also arranged on the horizontal support 3 near the rear side of the switch cabinet body. The wiring contacts of the circuit breaker 6 face the rear side of the switch cabinet body. The lightning arrester 4 is arranged below the wiring contacts of the circuit breaker 6, so that the distance between the circuit breaker 6 and the lightning arrester 4 is greatly reduced.

[0030] Among them, the lightning arrester 4 is arranged horizontally, that is, the axial direction of the lightning arrester 4 is arranged horizontally, one end of the lightning arrester 4 is fixed on the horizontal support 3, and the other end faces the rear side of the switch cabinet body, and this side needs to be connected to the position of the cable head 5 through a terminal block (such as a copper busbar). At the same time, the lightning arrester 4 also needs to be grounded to prevent the high voltage generated when the circuit breaker 6 inside the switch cabinet body is opened and closed to damage other electrical components.

[0031] A cable head 5 is arranged inside the cable room 2 and near the rear side of the switch cabinet body. One end of the cable head 5 is fixed to the bottom of the cable room 2, and the other end is close to the location of the lightning arrester 4, which is convenient for wiring between the lightning arrester 4 and the cable head 5.

[0032] A current transformer 8 is provided in the busbar chamber 7. The current transformer 8 is provided on the inner wall of the switch cabinet at the rear middle part. The current transformer 8 is used to transform the primary current into the secondary current, which can be used for measurement and protection sampling. A sensor 9 is provided on the lower side of the current transformer 8. The sensor 9 is the power supply of the live display and is used for the live display. The distance between the sensor 9 and the current transformer 8 is 200mm. The position of the sensor 9 is level with the position of the lightning arrester 4, and is located at the separation position of the cable chamber 2 and the busbar chamber 7. The distance between the sensor 9 and the lightning arrester 4 is 165mm. The position of the current transformer 8 is opposite to the position of the wiring contact of the circuit breaker 6. The distance between the wiring contact of the circuit breaker 6 and the current transformer 8 is 300mm.

[0033] Therefore, in this solution, the cable head 5, sensor 9, current transformer 8 and circuit breaker 6 are relatively concentrated at the location of the lightning arrester 4, so that the distribution of each component is reasonable and compact, which greatly simplifies the wiring method of each component, reduces the wiring length, and also improves the neatness and aesthetics of the switch cabinet. The upper wiring contact of the current transformer 8 is connected to the lower wiring contact of the circuit breaker 6 through a copper bar, and the lower wiring contact of the current transformer 8 is connected to the sensor and is also connected to the top of the cable head 5 (not shown in the figure); a copper bar is also connected between the cable head 5 and the lightning arrester 4 (not shown in the figure).

[0034] The busbar chamber 7 is also provided with a busbar bar 17 and an isolating switch 18. The busbar bar 17 is arranged at the top of the busbar chamber 7. A wall bushing 19 is arranged on the top side wall of the busbar chamber 7. The busbar bar 17 can be used for connection between various cabinets through the wall bushing 19. The lower end of the busbar bar 17 is connected to the upper wiring contact of the isolating switch 18. The isolating switch 18 is located at the upper rear of the circuit breaker 6 ( Figure 1 The lower wiring contact of the isolating switch 18 is connected to the upper wiring contact of the circuit breaker 6 through a copper bar. An operating mechanism 20 is provided on the front door of the switch cabinet, and an interlocking mechanism (not shown in the figure) is provided inside the switch cabinet. The rotation of the operating mechanism 20 can drive the interlocking mechanism to operate, thereby realizing the on-off state between the circuit breaker 6 and the isolating switch 18.

[0035] The instrument room 10 is located above the front side of the switch cabinet body. The instrument room 10 is separated from the busbar room 7 by a partition to form two relatively independent chambers. The instrument room 10 contains the circuit components of the instrument for the normal operation of the switch cabinet instrument. Since there are many components and wiring in the instrument room 10, wire brackets 11 are provided on both sides of the instrument room 10. The wire brackets 11 are arranged on the left and right sides and the upper and lower sides of the switch cabinet body. The wire brackets 11 have wire holes for concentrating the wire harness in the instrument room 10, making the wiring in the instrument room 10 more neat, intuitive, and fixable, thereby improving the aesthetics.

[0036] Example 2: Figures 1 to 3 The high-voltage fixed switchgear shown in the figure comprises a cable chamber 2, a circuit breaker chamber 1, a busbar chamber 7 and an instrument chamber 10. The cable chamber 2 is located at the bottom of the switchgear, the circuit breaker chamber 1 is located at the front middle of the switchgear, the instrument chamber 10 is located at the upper side of the circuit breaker chamber 1, and the busbar chamber 7 is located at the rear middle and upper rear of the switchgear. Figure 1 In the position shown, direction A is the front side of the switch cabinet body, and direction B is the rear side of the switch cabinet body.

[0037] Two parallel horizontal supports 3 are arranged between the cable chamber 2 and the circuit breaker chamber 1. The distance between the two horizontal supports 3 is 275 mm. The horizontal supports 3 are arranged horizontally in the switch cabinet body, and are mainly used to support the circuit breaker 6 in the circuit breaker chamber 1. Since the circuit breaker 6 is large in structure and has a certain weight, two horizontal supports 3 are used to support and fix the circuit breaker 6. A lightning arrester 4 is also arranged on the horizontal support 3 near the rear side of the switch cabinet body. The wiring contacts of the circuit breaker 6 face the rear side of the switch cabinet body. The lightning arrester 4 is arranged below the wiring contacts of the circuit breaker 6, so that the distance between the circuit breaker 6 and the lightning arrester 4 is greatly reduced.

[0038] Among them, the lightning arrester 4 is arranged horizontally, that is, the axial direction of the lightning arrester 4 is arranged horizontally, one end of the lightning arrester 4 is fixed on the horizontal support 3, and the other end faces the rear side of the switch cabinet body, and this side needs to be connected to the position of the cable head 5 through a terminal block (such as a copper busbar). At the same time, the lightning arrester 4 also needs to be grounded to prevent the high voltage generated when the circuit breaker 6 inside the switch cabinet body is opened and closed to damage other electrical components.

[0039] A cable head 5 is arranged inside the cable room 2 and near the rear side of the switch cabinet body. One end of the cable head 5 is fixed to the bottom of the cable room 2, and the other end is close to the location of the lightning arrester 4, which is convenient for wiring between the lightning arrester 4 and the cable head 5.

[0040] A current transformer 8 is provided in the busbar chamber 7. The current transformer 8 is provided on the inner wall of the switch cabinet at the rear side of the middle part. The current transformer 8 is used to transform the primary current into the secondary current, which can be used for measurement and protection sampling. A sensor 9 is provided on the lower side of the current transformer 8. The sensor 9 is the power supply of the live display 12.2 and is used by the live display 12.2. The distance between the sensor 9 and the current transformer 8 is 200mm. The position of the sensor 9 is level with the position of the lightning arrester 4, and is located at the separation position of the cable chamber 2 and the busbar chamber 7. The distance between the sensor 9 and the lightning arrester 4 is 165mm. The position of the current transformer 8 is opposite to the position of the wiring contact of the circuit breaker 6. The distance between the wiring contact of the circuit breaker 6 and the current transformer 8 is 300mm.

[0041] Therefore, in this solution, the cable head 5, sensor 9, current transformer 8 and circuit breaker 6 are relatively concentrated at the location of the lightning arrester 4, so that the distribution of each component is reasonable and compact, which greatly simplifies the wiring method of each component, reduces the wiring length, and also improves the neatness and aesthetics of the switch cabinet. The upper wiring contact of the current transformer 8 is connected to the lower wiring contact of the circuit breaker 6 through a copper bar, and the lower wiring contact of the current transformer 8 is connected to the sensor and is also connected to the top of the cable head 5 (not shown in the figure); a copper bar is also connected between the cable head 5 and the lightning arrester 4 (not shown in the figure).

[0042] The busbar chamber 7 is also provided with a busbar bar 17 and an isolating switch 18. The busbar bar 17 is arranged at the top of the busbar chamber 7. A wall bushing 19 is arranged on the top side wall of the busbar chamber 7. The busbar bar 17 can be used for connection between various cabinets through the wall bushing 19. The lower end of the busbar bar 17 is connected to the upper wiring contact of the isolating switch 18. The isolating switch 18 is located at the upper rear of the circuit breaker 6 ( Figure 1 The lower wiring contact of the isolating switch 18 is connected to the upper wiring contact of the circuit breaker 6 through a copper bar. An operating mechanism 20 is provided on the front door of the switch cabinet, and an interlocking mechanism (not shown in the figure) is provided inside the switch cabinet. The rotation of the operating mechanism 20 can drive the interlocking mechanism to operate, thereby realizing the on-off state between the circuit breaker 6 and the isolating switch 18.

[0043] The instrument room 10 is located above the front side of the switch cabinet body. The instrument room 10 is separated from the busbar room 7 by a partition to form two relatively independent chambers. The instrument room 10 contains the circuit components of the instrument for the normal operation of the switch cabinet instrument. Since there are many components and wiring in the instrument room 10, wire brackets 11 are provided on both sides of the instrument room 10. The wire brackets 11 are arranged on the left and right sides and the upper and lower sides of the switch cabinet body. The wire brackets 11 have wire holes for concentrating the wire harness in the instrument room 10, making the wiring in the instrument room 10 more neat, intuitive, and fixable, thereby improving the aesthetics.

[0044] A door assembly is arranged on the front side of the switch cabinet body, and the door assembly includes a first door 12 and a second door 13. The first door 12 is located at the top position of the front side of the switch cabinet, and is also the door structure of the instrument room 10. A microcomputer protector 12.1 and a power display 12.2 are arranged on the first door 12. The microcomputer protector 12.1 and the power display 12.2 can monitor and display the parameters of the components in the cabinet body, and have a certain protective effect. At the same time, some wiring holes are also arranged on the first door 12. The second door body 13 is located at the lower front side of the switch cabinet body, and the length of the second door body 13 is longer than that of the first door body 12. The length of the second door body 13 covers the cable room 2 and the circuit breaker room 1. The second door body 13 is a common door structure for the cable room 2 and the circuit breaker room 1, but the width of the second door body 13 is shorter than that of the first door body 12. An operating mechanism 20 is arranged next to the second door body 13. The operating mechanism 20 is arranged on the outer wall on the front side of the switch cabinet body, and a circuit schematic diagram of the switch cabinet is also arranged on the outer wall.

[0045] The door assembly can be used to open and close the switch cabinet during normal periods. It is connected to the front side of the switch cabinet by a rotating connection, which is convenient for opening and closing the door and is also suitable for frequent opening and closing operations.

[0046] The second door body 13 is provided with two front observation windows 13.1, which are the first observation window and the second observation window. The first observation window is provided at the top of the second door body 13 for observing the situation inside the circuit breaker chamber 1; the second observation window is provided at the bottom of the second door body 13 for observing the situation inside the cable chamber 2. A forward ventilation hole 13.2 is also provided at the bottom of the second door body 13, which can ventilate and dissipate heat inside the switch cabinet. The front observation window 13.1 is provided with transparent organic glass; the forward ventilation hole 13.2 is welded with a wire mesh to prevent large particles of dust and debris from entering the switch cabinet.

[0047] A sealing plate assembly is also provided at the rear side of the switch cabinet body, and the sealing plate assembly includes a first sealing plate 14, a second sealing plate 15 and a third sealing plate 16; the sealing plate assembly is mainly used for sealing the rear side of the switch cabinet body to prevent dust and debris from entering the switch cabinet body, and the first sealing plate 14, the second sealing plate 15 and the third sealing plate 16 are sequentially distributed at the rear side of the switch cabinet body from top to bottom. The sealing plate assembly and the switch cabinet can be disassembled and assembled at any time, which can facilitate the inspection and maintenance of the switch cabinet.

[0048] A first ventilation hole 14.1 is provided on the first sealing plate 14, which can ventilate the cabinet and also has a heat dissipation effect to a certain extent; a third observation window 15.1 is provided on the second sealing plate 15 for observing the situation of the busbar chamber 7 in the middle of the cabinet; a second ventilation hole 16.1 and a fourth observation window 16.2 are provided on the third sealing plate 16, and the second ventilation hole 16.1 can also ventilate and dissipate heat inside the cabinet, and the fourth observation window 16.2 can observe the situation inside the rear side of the cable chamber 2 of the cabinet.

Claims

1. A high voltage fixed switch cabinet, characterized in that: It comprises a circuit breaker room and a cable room, wherein a horizontal support is arranged between the circuit breaker room and the cable room, a lightning arrester is arranged on the side of the horizontal support away from the circuit breaker room, and the lightning arrester is arranged horizontally on the horizontal support.

2. A high voltage fixed switch cabinet according to claim 1, characterized in that: A cable head is arranged in the cable chamber, and the cable head is arranged on a side of the cable chamber away from the circuit breaker. One end of the cable head corresponds to the position of the lightning arrester, and the other end is arranged at the bottom of the cable chamber.

3. A high voltage fixed switch cabinet according to claim 1, characterized in that: A circuit breaker is arranged in the circuit breaker chamber, and the circuit breaker is arranged on the horizontal support.

4. A high voltage fixed switch cabinet according to claim 3, characterized in that: It also includes a busbar room, in which a current transformer is arranged. The current transformer is arranged opposite to the circuit breaker.

5. A high voltage fixed switch cabinet according to claim 4, characterized in that: A sensor is provided below the current transformer, and the sensor is level with the lightning arrester.

6. A high voltage fixed switch cabinet according to any one of claims 1 to 3, characterized in that: It also includes an instrument room, and line-passing brackets are arranged on the left and right sides of the instrument room.

7. A high voltage fixed switch cabinet according to any one of claims 1 to 3, characterized in that: Also includes a door body assembly, the door body assembly includes A first door body is located at the top of the switch cabinet, and a microcomputer protector and a live display are provided on the first door body; The second door body is located at the lower side of the first door body, and the second door body is provided with a forward observation window and a forward ventilation hole.

8. A high voltage fixed switch cabinet according to claim 7, characterized in that: Also included is a sealing plate assembly, the sealing plate assembly comprising A first sealing plate, located on the top of the switch cabinet, wherein a first ventilation hole is provided on the first sealing plate; A second sealing plate, located at the lower side of the first sealing plate, wherein a third observation window is provided on the second sealing plate; The third sealing plate is located at the lower side of the second sealing plate, and the third sealing plate is provided with a second ventilation hole and a fourth observation window.

9. A high voltage fixed switch cabinet according to claim 7, characterized in that: The door body assembly is rotatably connected to the switch cabinet.

10. A high voltage fixed switch cabinet according to claim 8, characterized in that: The sealing plate assembly is detachably connected to the switch cabinet.

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