A central switch cabinet

Abstract

The utility model discloses a central switch cabinet, which belongs to the technical field of electrical equipment, and includes a cable room, wherein a horizontally placed first bracket is arranged in the cable room, wherein the first bracket is arranged in the middle of the cable room, wherein a plurality of fixed nodes are arranged on the first bracket, and a component assembly is abutted on the first bracket. In this solution, there are a large number of component assemblies in the cable room, and the first bracket is arranged in the middle of the cable room, so that each component can be relatively centralized, and the length of the connection can be reduced. The fixed nodes on the first bracket can be used for fixing and installing each component assembly, so as to improve the rationality of the layout between each component, simplify the line design, and thus reduce the failure rate of the cabinet.

Description

Technical Field

[0001] The utility model relates to an electrical device, more specifically, it relates to a centrally mounted switch cabinet. Background Art

[0002] Switchgear plays an important role in the control of power systems. Existing switchgear generally has multiple chambers for distributing different circuit components. There is a large extra space inside the cabinet as a whole. However, the installation position and wiring method of components in most switchgear still have certain defects. Such components are generally installed on the inner wall of the switchgear cabinet. For some large components, this installation method may easily make the component installation unstable; during the long-term use of the switchgear, safety problems are likely to occur.

[0003] For example: Chinese patent announcement number CN205070274U, announcement date March 2, 2016, the name of the utility model is a central high-voltage switchgear. The application discloses a switchgear structure, including a switchgear body, a relay room, a trolley room, a busbar room and a cable room. The cable room is equipped with relays, microcomputer protection devices, instruments, and operating switches; the cable room is equipped with current transformers, outgoing cables, lightning arresters, grounding switches and other structures. This solution can isolate faults in their respective small rooms and improve the fault isolation capability. However, the distribution positions of the various structures inside the cabinet are complex, which leads to complex line connections and is more likely to cause faults. Utility Model Content

[0004] The utility model overcomes the problem of high failure rate caused by unreasonable arrangement of components in the switch cabinet, and provides a centrally mounted switch cabinet. This scheme can arrange various components within a reasonable range, simplify the complex lines and lengths in the cabinet, and reduce the occurrence rate of cabinet failures.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a central switch cabinet, including a cable room, a horizontally placed first bracket is arranged in the cable room, the first bracket is arranged in the middle of the cable room, a plurality of fixed nodes are arranged on the first bracket, and a component assembly is abutted on the first bracket. In this solution, there are many component assemblies in the cable room, and the first bracket is arranged in the middle of the cable room, so that each component can be relatively centralized, reducing the length of the connection, and the fixed nodes on the first bracket can be used for fixing and installing each component assembly, so as to improve the rationality of the layout between each component, simplify the line design, and thus reduce the failure rate of the cabinet.

[0006] Preferably, the component assembly includes a current transformer, which is installed on the side wall of the cable room and located on the upper side of the first bracket, and the bottom of the current transformer abuts against the first bracket. The current transformer can measure the current in the switch cabinet and provide current protection for the switch cabinet. The current transformer is relatively large as a whole, with one side fixed to the side of the switch cabinet, and the first bracket abuts against the bottom of the other side of the current transformer, thereby making the current transformer more balanced and more stable to install.

[0007] Preferably, the component assembly includes a cable head, one end of which is fixed to the bottom of the cable room, and the other end is fixed to the fixed node of the first bracket. The cable head is connected to the current transformer for conducting the circuit. Since the cable head is relatively long and has a certain degree of softness, it is easy for the cable head to be scattered in the switch cabinet and touch other components. Fixing one end of the cable head by the first bracket can prevent the cable head from contacting other components and improve the neatness of the cable head.

[0008] Preferably, the first bracket is in an I-shape, and an angle steel sheet is provided on the first bracket, and the fixing node is provided on the angle steel sheet. The first bracket is in an I-shape, which can well ensure the space in the cable room and prevent the cable room from being divided into two small chambers, resulting in reduced heat dissipation and heat dissipation, affecting the normal use of the switch cabinet. The angle steel sheet can increase the structural strength of the first bracket and can also be used to arrange the fixing node when in use.

[0009] Preferably, the cable room further comprises a lightning arrester and a heater, wherein the lightning arrester is arranged at the bottom of the cable room, and the heater is arranged on the first bracket. The lightning arrester is used to prevent high-voltage arcs from being generated when the circuit breaker is opened or closed, and the lightning arrester is arranged at the bottom of the cable room and also below the connection point of the circuit breaker; the heater can prevent the switch cabinet from freezing and short circuiting in a low temperature environment, and can also prevent the aging and corrosion of the components in the switch cabinet due to the humid environment, thereby extending the service life of the switch cabinet.

[0010] Preferably, the cabinet further comprises a busbar chamber, wherein a busbar and a first contact cover are arranged in the busbar chamber, and the busbar is electrically connected to the first contact cover. A busbar is arranged in the busbar chamber, and the first busbar and the first contact cover are connected, specifically, by a copper bar; and then the busbar is used for connection between the cabinets through a wall-penetrating tube.

[0011] Preferably, a trolley room is further included, and a curtain plate is provided on one side of the trolley room close to the first contact cover. The curtain plate is used to shield the connection holes of the first contact cover and the second contact cover in the trolley room to prevent accidents. The curtain plate can move up and down. When the circuit breaker is pushed into the trolley room, the curtain plate will move up to expose the connection holes of the first contact cover and the second contact cover to connect with the circuit breaker. When the circuit breaker is removed, the curtain plate will move down to shield the connection holes of the first contact cover and the second contact cover.

[0012] Preferably, the switch cabinet is provided with a door assembly on one side close to the trolley room, and the door assembly includes

[0013] The first door body is arranged on the upper part of the switch cabinet and includes a microcomputer protection device and a display;

[0014] A second door body, disposed at the lower side of the first door body, comprising a first observation window;

[0015] The third door body is arranged at the lower side of the second door body and includes a second observation window.

[0016] The door body assembly is arranged on the front side of the switch cabinet and is used for opening and closing the cabinet. The first door body is arranged on the upper side of the switch cabinet, located in the instrument room. A microcomputer protection device and a display are arranged on the first door body, which can monitor the specific situation of the cabinet in real time. The second door body and the third door body are arranged on the lower side of the first door body in sequence, and observation windows are respectively provided for observing the situation in the front chamber of the switch cabinet.

[0017] Preferably, the switch cabinet is provided with a sealing plate assembly on the side away from the door assembly, and the sealing plate assembly includes a first sealing plate and a second sealing plate, wherein the first sealing plate is arranged on the upper part of the switch cabinet; the second sealing plate is arranged on the lower side of the first sealing plate, and the second sealing plate includes a third observation window. The first sealing plate and the second sealing plate can seal the rear part of the switch cabinet body to prevent contamination by dust and other debris; wherein the second sealing plate is provided with a third observation window, so that the user can view the specific situation inside the cabinet through the third observation window.

[0018] Preferably, the sealing plate assembly is detachably connected to the switch cabinet, and the sealing plate assembly and the switch cabinet can be assembled and disassembled at any time, which is convenient for the maintenance of components inside the switch cabinet.

[0019] Compared with the prior art, the beneficial effects of the present invention are: (1) various components are arranged within a reasonable range, the complex lines and lengths in the cabinet are simplified, and the occurrence rate of cabinet failure is reduced; (2) the service life of the switch cabinet can be extended and the enterprise benefits can be improved; (3) the structure of the first bracket is simple, the fit degree with the switch cabinet is high, the production is convenient, the cost does not change much, and the profit is significantly increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the first bracket of the utility model.

[0022] Figure 3 It is a top view of the first bracket of the utility model.

[0023] Figure 4 It is a front view of the utility model.

[0024] Figure 5 It is a rear view of the utility model.

[0025] In the figure: 1. cable room, 2. first bracket, 2.1. main bracket, 2.2. side bracket, 3. fixed node, 4. current transformer, 5. cable head, 6. angle steel sheet, 7. lightning arrester, 8. heater, 9. busbar room, 10. busbar, 11. first contact cover, 12. second contact cover, 13. trolley room, 14. first door body, 14.1. microcomputer protection device, 14.2. display, 15. second door body, 15.1. first observation window, 16. second door body, 16.1. second observation window, 17. first sealing plate, 18. second sealing plate, 18.1. third observation window, 19. curtain plate, 20. instrument room, 21. partition. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0027] Example 1: Figures 1 to 3 The central switch cabinet shown in the figure includes several chambers, specifically a cable chamber 1, a busbar chamber 9, a trolley chamber 13 and an instrument chamber 20. Figure 1 In the figure, direction A is the front side of the switch cabinet, direction B is the rear side of the switch cabinet, the cable room 1 is located at the bottom of the rear side of the switch cabinet, the busbar room 9 is located directly above the cable room 1, the trolley room 13 is located in the middle of the front side of the switch cabinet, and the instrument room 20 is located directly above the trolley room 13. The front and rear chambers in the switch cabinet are separated by a partition 21.

[0028] A first bracket 2 is arranged in the cable chamber 1. The first bracket 2 is in an I-shape. The first bracket 2 consists of a main bracket 2.1 and two side brackets 2.2. The main bracket 2.1 forms an I-shape in the middle of the two side brackets 2.2. The main bracket 2.1 is fixedly connected to the side brackets 2.2. The length of the two side brackets 2.2 is consistent with the cabinet width of the switch cabinet, and angle steel sheets 6 are arranged at both ends of the side brackets 2.2. The two side brackets 2.2 are fixedly connected to the two sides of the switch cabinet through the angle steel sheets 6, so that the entire first bracket 2 is fixed in the cable chamber 1. The first bracket 2 is located in the middle of the cable chamber 1, that is, it is moderately far away from the busbar chamber 9 on the upper side and moderately far away from the bottom of the cabinet.

[0029] A current transformer 4 is fixed on the rear side of the cable chamber 1. The current transformer 4 is arranged on the upper side of the first bracket 2, and the bottom of the current transformer 4 abuts against the first bracket 2, so that the first bracket 2 has a certain supporting effect on the current transformer 4, so that one side and the bottom of the power transformer 4 are subjected to force, so that the installation of the current transformer 4 is more stable. In addition, since the current transformer 4 is also installed in the middle position of the width of the switch cabinet, the bottom of the current transformer 4 is located at the connection position of the side bracket 2.2 of the first bracket 2 and the main bracket 2.1. The connection position of the side bracket 2.2 and the main bracket 2.1 increases the effective contact area, so that the current transformer 4 has a larger contact surface on the first bracket 2, improving the installation stability.

[0030] A plurality of fixed nodes 3 are arranged on the main bracket 2.1 of the first bracket 2. In the present embodiment, there are three fixed nodes 3, which are evenly distributed on the main bracket 3 and are in the shape of circular holes. On the one hand, they can provide fixed support for other components, and on the other hand, they can also reduce the internal stress on the main bracket 2.1 and improve the structural strength of the main bracket 2.1.

[0031] Angle steel sheets 6 are also provided on the main bracket 2.1 and the side bracket 2.2 on the first bracket 2. Fixed nodes 3 are also provided on the angle steel sheets 6. The fixed nodes 3 on the angle steel sheets 6 are used to provide fixed support for other components on the one hand, and on the other hand, the side bracket 2.2 can be fixedly connected to the inside of the switch cabinet.

[0032] A cable head 5 is also provided inside the cable chamber 1. One end of the cable head 5 is fixed to the bottom of the cable chamber 1, and the other end is fixed to the fixed node 3 of the first bracket 2. The cable head 5 can be fixed to the fixed node 3 on the main bracket 2.1, or fixed to the fixed node 3 on the angle steel sheet 6 on the main bracket 2.1. The specific design can be based on the actual position so that the cable head 5 will not be scattered in the cable chamber 1.

[0033] A heater 8 is also provided in the cable chamber 1. The heater 8 can prevent the switch cabinet from freezing and short circuiting in a low temperature environment. It can also prevent the aging and corrosion of the components in the switch cabinet in a humid environment, thereby extending the service life of the switch cabinet. Since the heater 8 does not need to be directly electrically connected to other components, the heater 8 can be set at any position in the cable chamber 1. Specifically, the heater 8 can be directly set on the fixed node 3 on the angle steel sheet in the middle of the first bracket 2, so that the heat source is located in the middle of the cable chamber 1, and the first bracket 2 can also provide a winding position for the line of the heater 8 to prevent the line of the heater 8 from being messy.

[0034] It should be noted that, in the present invention, the first bracket 2 is made of insulating material to prevent the first bracket 2 from affecting the current generated by various circuits and components of the switch cabinet.

[0035] There is also a lightning arrester 7 inside the cable chamber 1. The lightning arrester 7 is used to prevent high-voltage arcs from being generated when the circuit breaker is opened or closed. Therefore, the lightning arrester 7 is arranged at the bottom of the cable chamber 1 and also below the connection point of the circuit breaker.

[0036] like Figure 1 As shown, the front and rear sides of the switch cabinet are separated by a partition 21, and a second contact cover 12 is also provided in the cable chamber 1, the second contact cover 12 is fixed on the partition 21, the interior of the second contact cover 12 is a connection node of the circuit breaker, the upper side of the cable chamber 1 is the busbar chamber 9, and the first contact cover 11 is also provided on the partition 21 in the busbar chamber 9, the first contact cover 11 and the second contact cover 12 are located in the same vertical direction, the trolley chamber 13 of the switch cabinet corresponds to the positions of the first contact cover 11 and the second contact cover 12, the trolley chamber 13 is used for the opening and closing of the circuit breaker, arcs are easily generated during the opening and closing operations of the circuit breaker, and the generation of arcs can be reduced by the lightning arrester 7. A curtain plate 19 that can move up and down is arranged between the trolley chamber 13 and the first contact cover 11 and the second contact cover 12. There are two curtain plates 19, which can respectively cover the contact nodes inside the first contact cover 11 and the second contact cover 12. When the circuit breaker is pushed into the trolley chamber 13, the two curtain plates 19 can expose the contact nodes inside the first contact cover 11 and the second contact cover 12.

[0037] In the switch cabinet, the second contact cover 12 is electrically connected to the current transformer 4, the current transformer 4 is electrically connected to the top of the cable head 5, and the top of the cable head 5 is also electrically connected to the lightning arrester 7, forming a circuit. A busbar 10 is provided in the busbar chamber 9, and the busbar 10 is electrically connected to the first contact cover 11. Specifically, the above electrical connections can be connected through a metal bar (such as a copper bar).

[0038] On the top front side of the switch cabinet is the instrument room 20, or secondary room, which contains the circuit components of the instruments for the normal operation of the instruments of the switch cabinet.

[0039] Example 2: Figures 1 to 5 The central switch cabinet shown in the figure includes several chambers, specifically a cable chamber 1, a busbar chamber 9, a trolley chamber 13 and an instrument chamber 20. Figure 1 In the figure, direction A is the front side of the switch cabinet, direction B is the rear side of the switch cabinet, the cable room 1 is located at the bottom of the rear side of the switch cabinet, the busbar room 9 is located directly above the cable room 1, the trolley room 13 is located in the middle of the front side of the switch cabinet, and the instrument room 20 is located directly above the trolley room 13. The front and rear chambers in the switch cabinet are separated by a partition 21.

[0040] A first bracket 2 is arranged in the cable chamber 1. The first bracket 2 is in an I-shape. The first bracket 2 consists of a main bracket 2.1 and two side brackets 2.2. The main bracket 2.1 forms an I-shape in the middle of the two side brackets 2.2. The main bracket 2.1 is fixedly connected to the side brackets 2.2. The length of the two side brackets 2.2 is consistent with the cabinet width of the switch cabinet, and angle steel sheets 6 are arranged at both ends of the side brackets 2.2. The two side brackets 2.2 are fixedly connected to the two sides of the switch cabinet through the angle steel sheets 6, so that the entire first bracket 2 is fixed in the cable chamber 1. The first bracket 2 is located in the middle of the cable chamber 1, that is, it is moderately far away from the busbar chamber 9 on the upper side and moderately far away from the bottom of the cabinet.

[0041] A current transformer 4 is fixed on the rear side of the cable chamber 1. The current transformer 4 is arranged on the upper side of the first bracket 2, and the bottom of the current transformer 4 abuts against the first bracket 2, so that the first bracket 2 has a certain supporting effect on the current transformer 4, so that one side and the bottom of the power transformer 4 are subjected to force, so that the installation of the current transformer 4 is more stable. In addition, since the current transformer 4 is also installed in the middle position of the width of the switch cabinet, the bottom of the current transformer 4 is located at the connection position of the side bracket 2.2 of the first bracket 2 and the main bracket 2.1. The connection position of the side bracket 2.2 and the main bracket 2.1 increases the effective contact area, so that the current transformer 4 has a larger contact surface on the first bracket 2, improving the installation stability.

[0042] A plurality of fixed nodes 3 are arranged on the main bracket 2.1 of the first bracket 2. In the present embodiment, there are three fixed nodes 3, which are evenly distributed on the main bracket 3 and are in the shape of circular holes. On the one hand, they can provide fixed support for other components, and on the other hand, they can also reduce the internal stress on the main bracket 2.1 and improve the structural strength of the main bracket 2.1.

[0043] Angle steel sheets 6 are also provided on the main bracket 2.1 and the side bracket 2.2 on the first bracket 2. Fixed nodes 3 are also provided on the angle steel sheets 6. The fixed nodes 3 on the angle steel sheets 6 are used to provide fixed support for other components on the one hand, and on the other hand, the side bracket 2.2 can be fixedly connected to the inside of the switch cabinet.

[0044] A cable head 5 is also provided inside the cable chamber 1. One end of the cable head 5 is fixed to the bottom of the cable chamber 1, and the other end is fixed to the fixed node 3 of the first bracket 2. The cable head 5 can be fixed to the fixed node 3 on the main bracket 2.1, or fixed to the fixed node 3 on the angle steel sheet 6 on the main bracket 2.1. The specific design can be based on the actual position so that the cable head 5 will not be scattered in the cable chamber 1.

[0045] A heater 8 is also provided in the cable chamber 1. The heater 8 can prevent the switch cabinet from freezing and short circuiting in a low temperature environment. It can also prevent the aging and corrosion of the components in the switch cabinet in a humid environment, thereby extending the service life of the switch cabinet. Since the heater 8 does not need to be directly electrically connected to other components, the heater 8 can be set at any position in the cable chamber 1. Specifically, the heater 8 can be directly set on the fixed node 3 on the angle steel sheet in the middle of the first bracket 2, so that the heat source is located in the middle of the cable chamber 1, and the first bracket 2 can also provide a winding position for the line of the heater 8 to prevent the line of the heater 8 from being messy.

[0046] It should be noted that, in the present invention, the first bracket 2 is made of insulating material to prevent the first bracket 2 from affecting the current generated by various circuits and components of the switch cabinet.

[0047] There is also a lightning arrester 7 inside the cable chamber 1. The lightning arrester 7 is used to prevent high-voltage arcs from being generated when the circuit breaker is opened or closed. Therefore, the lightning arrester 7 is arranged at the bottom of the cable chamber 1 and also below the connection point of the circuit breaker.

[0048] like Figure 1As shown, the front and rear sides of the switch cabinet are separated by a partition 21, and a second contact cover 12 is also provided in the cable chamber 1, the second contact cover 12 is fixed on the partition 21, the interior of the second contact cover 12 is a connection node of the circuit breaker, the upper side of the cable chamber 1 is the busbar chamber 9, and the first contact cover 11 is also provided on the partition 21 in the busbar chamber 9, the first contact cover 11 and the second contact cover 12 are located in the same vertical direction, the trolley chamber 13 of the switch cabinet corresponds to the positions of the first contact cover 11 and the second contact cover 12, the trolley chamber 13 is used for the opening and closing of the circuit breaker, arcs are easily generated during the opening and closing operations of the circuit breaker, and the generation of arcs can be reduced by the lightning arrester 7. A curtain plate 19 that can move up and down is arranged between the trolley chamber 13 and the first contact cover 11 and the second contact cover 12. There are two curtain plates 19, which can respectively cover the contact nodes inside the first contact cover 11 and the second contact cover 12. When the circuit breaker is pushed into the trolley chamber 13, the two curtain plates 19 can expose the contact nodes inside the first contact cover 11 and the second contact cover 12.

[0049] In the switch cabinet, the second contact cover 12 is electrically connected to the current transformer 4, the current transformer 4 is electrically connected to the top of the cable head 5, and the top of the cable head 5 is also electrically connected to the lightning arrester 7, forming a circuit. A busbar 10 is provided in the busbar chamber 9, and the busbar 10 is electrically connected to the first contact cover 11. Specifically, the above electrical connections can be connected through a metal bar (such as a copper bar).

[0050] On the top front side of the switch cabinet is the instrument room 20, or secondary room, which contains the circuit components of the instruments for the normal operation of the instruments of the switch cabinet.

[0051] A door assembly is provided at the front side of the switch cabinet, and the door assembly includes a first door 14, a second door 14 and a third door 16. The first door 14, the second door 15 and the third door 16 are arranged on the switch cabinet from top to bottom in sequence, and the door assembly is arranged at the front side of the switch cabinet for opening and closing the cabinet. The first door 14 is the switch door of the instrument room 20, and the first door 14 is provided with a microcomputer protection device 14.1 and a display 14.2 for real-time monitoring of the specific conditions of the cabinet; the second door 15 is the switch door of the trolley room 13, and the third door 16 is the front door of the cable room 1, and the second door 15 and the third door 16 are respectively provided with a first observation window 15.1 and a second observation window 16.1 for observing the conditions in the front chamber of the switch cabinet.

[0052] A sealing plate assembly is provided at the rear side of the switch cabinet, and the sealing plate assembly includes a first sealing plate 17 and a second sealing plate 18. The first sealing plate 17 and the second sealing plate 18 can seal the rear part of the switch cabinet body to prevent contamination by dust and other debris; wherein, a third observation window 18.1 is provided on the second sealing plate 18, so that the user can view the specific situation inside the cabinet through the third observation window 18.1. The first sealing plate 17 and the second sealing plate 18 are detachably connected to the switch cabinet body, so as to facilitate the maintenance of the components inside the switch cabinet.

Claims

1. A central switch cabinet, characterized in that: It comprises a cable room, in which a horizontally placed first bracket is arranged, the first bracket is arranged in the middle of the cable room, a plurality of fixed nodes are arranged on the first bracket, and a component assembly is abutted on the first bracket.

2. A central switch cabinet according to claim 1, characterized in that: The component assembly includes a current transformer, which is installed on the side wall of the cable chamber and located on the upper side of the first bracket, and the bottom of the current transformer abuts against the first bracket.

3. A center-mounted switch cabinet according to claim 2, characterized in that: The component assembly comprises a cable head, one end of which is fixed to the bottom of the cable chamber, and the other end of which is fixed to a fixed node of the first bracket.

4. A center-mounted switch cabinet according to any one of claims 1 to 3, characterized in that: The first bracket is in an I-shape, an angle steel sheet is arranged on the first bracket, and the fixing node is arranged on the angle steel sheet.

5. A center-mounted switch cabinet according to claim 4, characterized in that: The cable chamber further comprises a lightning arrester and a heater. The lightning arrester is arranged at the bottom of the cable chamber, and the heater is arranged on the first bracket.

6. A center-mounted switch cabinet according to any one of claims 1 to 3, characterized in that: It also includes a busbar chamber, in which a busbar row and a first contact cover are arranged, and the busbar row is electrically connected to the first contact cover.

7. A center-mounted switch cabinet according to claim 6, characterized in that: It also includes a trolley room, and a curtain plate is provided on one side of the trolley room close to the first contact cover.

8. A center-mounted switch cabinet according to claim 7, characterized in that: The switch cabinet is provided with a door assembly on one side close to the trolley room, and the door assembly includes The first door body is arranged on the upper part of the switch cabinet and includes a microcomputer protection device and a display; A second door body, disposed at the lower side of the first door body, comprising a first observation window; The third door body is arranged at the lower side of the second door body and includes a second observation window.

9. A center-mounted switch cabinet according to claim 8, characterized in that: The switch cabinet is provided with a sealing plate assembly on one side away from the door assembly, and the sealing plate assembly includes The first sealing plate is arranged on the upper part of the switch cabinet; The second sealing plate is arranged at the lower side of the first sealing plate and comprises a third observation window.

10. A center-mounted switch cabinet according to claim 9, characterized in that: The sealing plate assembly is detachably connected to the switch cabinet.

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