Meter chamber wiring structure of centrally installed switchgear

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a centrally installed switchgear instrument chamber wiring structure, which comprises an instrument chamber, a circuit breaker chamber, a cable chamber, a bus chamber, a groove body and a cover plate, a mutual inductor is arranged in the cable chamber, the groove body is detachably connected with the cover plate, the groove body and the cover plate enclose to form a wiring space of a secondary wire, and the wiring space is arranged in the circuit breaker chamber. One end of the wiring space is connected with the bottom plate of the instrument chamber, the other end of the wiring space is connected with the wiring end of the mutual inductor, and a wiring harness separating device is further arranged in the wiring space. The utility model provides an optimized secondary wire routing structure, which can reduce secondary wire routing paths, reduce cost and facilitate later maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field, concretely is the middle -positioned cabinet instrument room wiring structure. BACKGROUND

[0002] The middle -positioned cabinet (also called as the medium voltage switch cabinet) is the cabinet equipment for the distribution and control medium voltage power system, usually used in the power system of voltage above 10KV to 35kV, is mainly used for connecting power generation equipment, transformer, high voltage distribution cabinet etc., is equipped with a variety of electrical equipment in the middle -positioned cabinet, and these devices are suitable for different voltage grades respectively, need to use primary line and secondary line respectively to connect. The primary line refers to the wire or busbar for transmitting and distributing high voltage current, is usually used for connecting the high voltage electrical equipment in the middle -positioned cabinet, such as circuit breaker, disconnecting switch, mutual inductor etc.;The secondary line refers to the wire for transmitting and distributing low voltage and low current signal, is usually used for connecting the secondary equipment in the middle -positioned cabinet, such as relay, protection device, measuring instrument etc.

[0003] To ensure the safety and reliable operation of the middle -positioned cabinet, when designing wiring, it needs to be considered comprehensively, and the primary line and secondary line are wired separately. Among them, the terminal of the current transformer needs to be connected with the corresponding instrument of the instrument room by the secondary line, and the traditional method is to sequentially set wiring channels in the lower rear part of the cabinet body, the bottom of the cabinet body and the middle lower part of the front cabinet, and the secondary line is arranged in these wiring channels. By adopting this wiring mode, the secondary line needs to be wound around the edge of the cabinet body, and the distance is long, and the amount of secondary line is large;At the same time, there are more bending, which increases the installation workload, and it is very difficult to adjust the wire harness in the later period. In addition, the wire harness of various voltages is mixed together in the channel, which is easy to cause electrical interference. UTILITY MODEL CONTENTS

[0004] The utility model provides middle -positioned cabinet instrument room wiring structure can shorten the wiring path of secondary line, effectively reduce the amount of secondary wire and the workload of setting secondary line.

[0005] The application provides the following technical scheme:

[0006] The middle -positioned cabinet instrument room wiring structure, including instrument room, circuit breaker room, cable room, busbar room, groove and cover plate, the cable room is equipped with mutual inductor, the groove and cover plate are detachably connected, and the groove and cover plate enclose the wiring space of secondary line, one end of the wiring space is connected with the bottom plate of the instrument room, and the other end is connected with the wiring end of the mutual inductor.

[0007] Further, the rear cabinet plate of the cable room is provided with an opening for the wiring space to pass through at the abutting place of the cabinet body side plate;The bottom plate of the instrument room is provided with an opening connected with the wiring structure, and the opening shape is matched with the cross-sectional shape of the wiring structure.

[0008] Further, the wire structure comprises horizontal and vertical parts, the horizontal part is arranged between the mutual inductor terminal and the circuit breaker room, and the vertical part is arranged between the circuit breaker room and the bottom plate of the cable room.

[0009] Further, the cross section of the groove body is U-shaped, the cross section of the cover plate is U-shaped, and the cross section sizes of the groove body and the cover plate are matched.

[0010] Further, the groove body and the cover plate are made of aluminum alloy.

[0011] Further, the groove body and the cover plate are connected through screws.

[0012] Further, the groove body is installed on the left side plate of the cabinet body through screws.

[0013] Further, the groove body is provided with a wire harness separation device.

[0014] Further, the wire harness separation device is one of a wire clamp and a partition plate.

[0015] Further, the partition plate comprises a plurality of groups of partition plates arranged at intervals along the wire groove, and the height of the partition plate is the same as the height of the side edge of the groove body.

[0016] The technical principles and beneficial effects of the present application are as follows: compared with the traditional way of winding the secondary wire around the middle cabinet, the wire path and the amount of the secondary wire are greatly shortened by reasonably evaluating the structure of each subarea, designing the wire path space of the secondary wire in a straight line between the mutual inductor and the instrument room, reducing the bending in the wiring process, and being conducive to the later maintenance; meanwhile, the separation design of the wire harness is added in the wire path space, so that the interference caused by the wire harness of different voltage grades can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the wire structure of the instrument room of the middle cabinet.

[0018] Figure 2 It is a structural schematic diagram of the groove body and the cover plate.

[0019] Figure 3 It is a structural schematic diagram of another groove body. DETAILED DESCRIPTION

[0020] The following will be further described in detail through specific embodiments:

[0021] The marks in the drawings of the specification include: instrument room 1, circuit breaker room 2, wire groove 3, busbar room 4, cable room 5, current transformer 6, groove body 7, cover plate 8, wire clamp 9, partition plate 10.

[0022] Example 1

[0023] The wire structure of the instrument room of the middle cabinet is as follows:Figure 1 As shown in the figure, it includes instrument room 1, circuit breaker room 2, cable room 5, busbar room 4, groove 7 and cover plate 8. The instrument room 1 is arranged at the uppermost end of the front of the cubicle, below which is the circuit breaker room 2, and at the upper end of the rear of the cubicle is the busbar room 4, below which is the circuit breaker room 2. The current transformer 6 is arranged on the top plate of the circuit breaker room for monitoring the working conditions of each electrical circuit. The signals collected by the current transformer 6 are connected to each ammeter in the instrument room 1 through secondary wires.

[0024] An opening is arranged on the upper part of the rear cabinet plate of the cable room 5 close to the side plate of the cabinet, and an opening is arranged on the bottom plate of the instrument room 1. The shapes of the openings are matched with the cross-sectional shape of the wire slot 3.

[0025] As shown in the figure, the groove 7 and the cover plate 8 are detachably connected to form the wire slot 3 with open ends for arranging secondary wires. Figure 2 The cross section of the groove 7 is U-shaped, including a side and a bottom plate; the cross section of the cover plate 8 is U-shaped, including a side cover plate and a top cover plate. The cross-sectional dimensions of the groove 7 and the cover plate 8 are matched. The connection mode of the groove 7 and the cover plate 8 can adopt various modes such as triangular bite plate or screw, and in this embodiment, the connection is achieved by screw. The wire slot 3 is fixed to the inner side of the left side plate of the cubicle by screws and includes horizontal and vertical wire slots. One end of the horizontal wire slot is arranged above the current transformer 6, the other end passes through the opening of the rear cabinet plate of the cable room 5 into the circuit breaker room 2, and extends to the bottom of the opening of the instrument room 1 and is connected to the lower end of the vertical wire slot; the upper end of the vertical wire slot is connected to the opening of the bottom plate of the instrument room 1. One end of the secondary wire in the wire slot 3 is connected to the connection end of the current transformer 6, and the other end is connected to the corresponding ammeter in the instrument room 1.

[0026] The groove 7 and the cover plate 8 can be made of plastic or aluminum alloy. In this embodiment, the wire slot 3 is made of aluminum alloy.

[0027] The above wiring space provides an optimized path for the secondary wire connecting the connection end of the current transformer 6 and the ammeter 1, which can greatly reduce the length of the wiring path and is conducive to reducing the amount of secondary wire and reducing costs; at the same time, the bending of the wiring path is reduced, which is convenient for wire bundle pulling and is conducive to later maintenance.

[0028] Embodiment Two

[0029] Since other secondary wires for other purposes can also be arranged in the wire slot 3, different voltage grade wire bundles are mixed together, which may interfere with each other and affect the signal quality. Therefore, in this embodiment, a wire bundle separation device is added in the groove 7.

[0030] In this embodiment, the wire bundle separation device is a plurality of wire clamps 9 arranged in the wire slot 3, as shown in the figure. Figure 2As shown, the wire card 9 is arranged on the bottom plate of the groove body 7 and is arranged along the direction of the wire groove 3. Each wire card 9 comprises a wire card base and a plurality of C-shaped wire cards arranged on the wire card base. The C-shaped wire card has a resilient opening, and the opening size is smaller than the diameter of the C-shaped wire card, so that the wire harness can be conveniently clamped into the C-shaped wire card for fixation. The corresponding C-shaped wire cards on the plurality of different wire cards 9 can form a wire harness channel.

[0031] In this embodiment, two C-shaped wire cards are arranged on each wire card 9, and two different wire harnesses can be separated and fixed. The type of wire card used can be selected according to the actual situation, so as to adjust the number of wire harness channels.

[0032] Embodiment three

[0033] Another wire harness separation device is provided in this embodiment, as shown in the figure. Figure 3 A plurality of sets of partitions 10 are arranged on the floor of the groove body 7, the height of the partition 10 is parallel to the side of the groove body 7 and has the same height. A plurality of sets of partitions 10 are arranged along the direction of the wire groove 3 to separate the internal space of the wire groove 3 to form a plurality of wire harness channels. This separation method has simpler structure and manufacturing process, and can better save costs. In this embodiment, two sets of partitions 10 parallel to the side of the groove body 7 are arranged, and the wire groove 3 can be divided into three groups of wire harness channels.

[0034] Embodiment four

[0035] This embodiment increases the monitoring of the working condition of the secondary wire. A temperature sensor is arranged in the wire groove 3, and a secondary wire temperature display device is additionally arranged on the instrument door of the instrument room 1. The temperature sensor and the temperature display device are connected through another set of secondary wires, so that the temperature data of the secondary wire can be displayed in real time. The operation and maintenance personnel can timely find the abnormal temperature rise in the wire groove 3, and reduce the safety hidden danger.

[0036] The above is only an embodiment of the present application, and the present application is not limited to the field involved in this embodiment. The specific structure and characteristics known in the art are not described in detail. It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. The wiring structure of the instrument room of the central cabinet includes an instrument room, a circuit breaker room, a cable room, a busbar room, a trough and a cover plate. The cable room is provided with a mutual inductor, which is characterized by: The trough body and the cover plate are detachably connected, and the trough body and the cover plate enclose a wiring space for the secondary line. One end of the wiring space is connected to the bottom plate of the instrument room, and the other end is connected to the connection terminal of the mutual inductor.

2. The wiring structure of the central cabinet instrument room according to claim 1 is characterized by: An opening for wiring space is provided above the rear cabinet panel of the cable room and at the joint of the cabinet side panel; an opening connected to the wiring structure is provided on the bottom plate of the instrument room, and the shape of the opening matches the cross-sectional shape of the wiring structure.

3. The wiring structure of the central cabinet instrument room according to claim 2 is characterized by: The wiring structure includes a horizontal part and a vertical part. The horizontal part is arranged between the transformer terminal and the circuit breaker chamber, and the vertical part is arranged between the circuit breaker chamber and the bottom plate of the cable chamber.

4. The wiring structure of the central cabinet instrument room according to claim 3 is characterized by: The cross section of the trough body is U-shaped, the cross section of the cover plate is U-shaped, and the cross-sectional dimensions of the trough body and the cover plate match.

5. The wiring structure of the central cabinet instrument room according to claim 4 is characterized in that: The trough body and the cover plate are made of aluminum alloy.

6. The wiring structure of the central cabinet instrument room according to claim 5 is characterized by: The trough body and the cover plate are connected by screws.

7. The wiring structure of the central cabinet instrument room according to claim 6 is characterized by: The trough body is mounted on the left side plate of the cabinet body by screws.

8. The wiring structure of the central cabinet instrument room according to claim 7 is characterized by: A wire harness separator is provided in the tank body.

9. The wiring structure of the central cabinet instrument room according to claim 8 is characterized by: The wire harness separator is a wire clip or a separator.

10. The wiring structure of the central cabinet instrument room according to claim 9, characterized in that: The partitions include a plurality of groups of partitions spaced apart along the direction of the wire groove, and the height of the partitions is the same as the height of the side of the groove body.

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