Middle-mounted high-voltage isolation cabinet

Abstract

The utility model discloses a centrally-mounted high-voltage isolation cabinet, which comprises a cabinet body, an instrument chamber, a circuit breaker chamber and a cable chamber which are sequentially distributed from top to bottom are arranged in the cabinet body, a vertical main shaft is arranged in the cable chamber, a plurality of wire storage discs which are arranged at intervals are rotatably arranged on the main shaft, and a plurality of wire storage grooves which are arranged in an opening manner are arranged on the wire storage discs. And the cable is clamped into the cable storage groove from the opening to form storage. The cable chamber has the advantages that cables in the cable chamber are convenient to manage, the overall space of the cable chamber is utilized, and the take-up function is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage isolation cabinets, in particular to a medium-voltage high-voltage isolation cabinet. Background Art

[0002] A high-voltage isolation cabinet is a device used in a high-voltage electrical system, usually composed of a circuit breaker, a load disconnect switch, an earthing switch, and control cables, etc. Among them, the circuit breaker is used to cut off the circuit when needed, the load disconnect switch is used to isolate the power supply and the load, the earthing switch is used to provide earthing protection during equipment maintenance, and the control cable is used to connect the control equipment and the isolation cabinet. The medium-voltage high-voltage isolation cabinet, full name metal-clad medium-voltage switchgear, mainly functions to receive and distribute the electric energy of the 3.6 - 12 kV power grid, and control, protect, monitor, and measure the power circuit. In a medium-voltage high-voltage isolation cabinet, there are usually a busbar chamber and an instrument chamber located on the upper layer, a circuit breaker chamber located on the middle layer, and a cable chamber located on the lower layer. Due to the presence of various cables in the cable chamber, it is difficult to operate the storage and fixation of the cables.

[0003] In the Chinese patent literature, the authorized announcement number CN218732414U was authorized and announced on March 24, 2023, for a high-voltage incoming line isolation cabinet, which is provided with a support and fixation device for fixing cables in the cabinet body. The support and fixation device is provided with a vertical support plate on the cross bar, the height of the support plate on the cross bar is adjustable, and a fixing band for fixing the cable is provided at the top of the support plate. The cable is fixed by the fixing band, and the horizontal plane of the cable is adjusted by setting the height of the support plate on the cross bar. This application aims to achieve the same-plane fixation effect of multi-diameter cables.

[0004] The deficiencies of the prior art are as follows: only the support and fixation device can be set on the wall surface of the cabinet body to fix the cables in a single plane, and for the cable chamber in the medium-voltage high-voltage isolation cabinet, there is still a large space that has not been utilized. Content of the Utility Model

[0005] In order to overcome the above deficiencies in the prior art, the utility model provides a medium-voltage high-voltage isolation cabinet, which is convenient for cable management in the cable chamber, utilizes the overall space of the cable chamber, and has a reliable cable storage function.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A medium-voltage high-voltage isolation cabinet includes a cabinet body. Inside the cabinet body, there are an instrument chamber, a circuit breaker chamber, and a cable chamber distributed in sequence from top to bottom. Inside the cable chamber, there is a vertical main shaft, and a plurality of spaced storage disks are rotatably arranged on the main shaft. The storage disks are provided with a plurality of storage grooves arranged in an open shape, and the cables are inserted into the storage grooves from the opening to form storage.

[0008] The cable storage grooves of the cable storage disc can clamp the cables to achieve the position limitation and storage of the cables. By adjusting the relative angles of different cable storage discs, the free length of the cables can be bent and adjusted to achieve further storage of the cables. The entire storage utilizes the three-dimensional space of the cable chamber, with high space utilization and reliable fixing effect.

[0009] Preferably, the shape of the cable storage disc is a disc shape, and the cable storage disc is divided into a busbar area, an instrument wire area, and a circuit breaker wire area in its circumferential direction. The disc-shaped cable storage disc is convenient for rotating and adjusting the angle, and the partition on the cable storage board enables cables with different functions to be constrained in different partitions, thus facilitating the search and maintenance of corresponding cables.

[0010] Preferably, the first cable storage grooves in the busbar area are fan-shaped, with the openings located in the circumferential direction of the cable storage grooves and provided with necks. The cable storage grooves in the busbar area have a receiving structure with a large inner part and a small opening, which is suitable for constraining a large number of multi-cables with different specifications.

[0011] Preferably, the second cable storage grooves in the instrument wire area are long grooves with one end open, and a number of recesses are provided at intervals on the groove walls of the long grooves, and marks are provided at each recess. Since there are many instrument wirings and the cables need to correspond to each interface one by one during wiring, the second cable storage grooves mark and accommodate different cables through the recesses and marks, facilitating instrument wiring.

[0012] Preferably, the third cable storage grooves in the circuit breaker wire area include a number of cable storage long grooves radially distributed around the cable storage disc, and the cable storage long grooves are arranged at intervals. Since the several cable storage long grooves are separated from each other, the cables connected to the circuit breakers can be classified and separately stored in different cable storage long grooves, with high safety and taking into account the storage capacity at the same time.

[0013] Preferably, a damping member is provided between the cable storage disc and the main shaft so that the cable storage disc rotates with damping relative to the rotating shaft. This avoids the random rotation of the cable storage disc relative to the main shaft and ensures the cable winding function of the cable storage disc.

[0014] Preferably, the first cable storage disc, the second cable storage disc, and the third cable storage disc are sequentially arranged at intervals from top to bottom on the main shaft. A fixing column is connected between the first cable storage disc and the second cable storage disc to enable them to rotate synchronously. A locking nut is threadedly connected to the main shaft on the lower side of the third cable storage disc, and a convex part for abutting against the upper side of the third cable storage disc is provided on the main shaft. The third cable storage disc can be pressed tightly against the main shaft through the locking nut and the convex part and no longer rotates, while the setting of the fixing column between the first cable storage disc and the second cable storage disc enables them to rotate simultaneously. Therefore, when storing the cables, only by rotating the first cable storage disc or the second cable storage disc can the rotation and elongation of the cables between the second cable storage disc and the third cable storage disc be realized, and the free section of the cables is wound on the main shaft, avoiding the random accumulation of the free section of the cables in the cable chamber due to the excessive length of the free section of the cables, and the storage effect is reliable.

[0015] The beneficial effects of the above solution will be described in detail in combination with the accompanying drawings and the following embodiments. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a center-mounted high-voltage isolation cabinet provided by one embodiment of the present utility model;

[0017] Figure 2 is a schematic structural diagram of a wire storage reel proposed by one embodiment of the present utility model.

[0018] Figure 3 is a schematic structural diagram of the connection between the wire storage reel and the main shaft proposed by one embodiment of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the connection between the wire storage reel and the main shaft proposed by another embodiment of the present utility model.

[0020] In the figure: cabinet body 1, instrument room 2, circuit breaker room 3, cable room 4, main shaft 5, wire storage reel 6, wire storage groove 7, partition 8, wire passing groove 9, first wire storage groove 10, necking 101, second wire storage groove 11, depression 111, third wire storage groove 12, damping member 13, first wire storage reel 14, second wire storage reel 15, third wire storage reel 16, fixed column 17, locking nut 18. Detailed Embodiment

[0021] As Figures 1 to 3 shown, a center-mounted high-voltage isolation cabinet provided by one embodiment of the present utility model includes a cabinet body 1. Inside the cabinet body 1, there are an instrument room 2, a circuit breaker room 3, and a cable room 4 arranged in sequence from top to bottom. Inside the cable room 4, there is a vertical main shaft 5. A plurality of spaced wire storage reels 6 are rotatably arranged on the main shaft 5. A plurality of open wire storage grooves 7 are provided on the wire storage reels 6. The wire passes through the opening and is clamped into the wire storage groove 7 to form storage.

[0022] In this application, there is a cavity inside the cabinet body 1. Two spaced partitions 8 are provided in the middle of the cavity. The cavity inside the cabinet body 1 is divided into an instrument room 2, a circuit breaker room 3, and a cable room 4 by the two partitions 8. The transverse two ends of the partition 8 are respectively hollowed out to form a through wire passing groove 9.

[0023] The main shaft 5 is fixedly connected to the upper and lower wall surfaces of the cable room 4. After the wire is arranged in the wire storage groove 7 of the wire storage reel 6, the wire can be wound around the main shaft 5 by rotation, shortening the free section length of the wire. In order to cooperate with the rotation application of the wire storage reel 6, when connecting the wires, the wires with longer lengths are connected first, and then the wires with shorter lengths are connected; or, the connection order is not specified, but the wires with longer lengths are first clamped into the wire storage groove 7, and after rotating the wire storage reel 6 for several weeks, the wires with shorter lengths are clamped into the wire storage groove 7, so as to achieve more neat storage of the wires.

[0024] As Figure 2 shown, the shape of the wire storage disc 6 is disc-shaped. The wire storage disc 6 is divided into a bus bar area, an instrument wire area, and a circuit breaker wire area in its circumferential direction. The wire storage grooves 7 in different areas are divided into a first wire storage groove 10, a second wire storage groove 11, and a third wire storage groove 12. The first wire storage groove 10 in the bus bar area is arranged in a fan shape, and the opening is located in the circumferential direction of the wire storage groove 7 and is provided with a necking 101. The wire storage groove 7 in the bus bar area has a receiving structure with a large inner opening and a small outer opening, which is suitable for restraining a large number of multi-cables with different specifications. The second wire storage groove 11 in the instrument wire area is a long groove with one end open, and a number of recesses 111 are arranged at intervals on the groove wall of the long groove, and marks are arranged one by one at the recesses 111. The marks include but are not limited to color indications, letter and number marks, etc. The third wire storage groove 12 in the circuit breaker wire area includes five wire storage long grooves radially distributed around the wire storage disc 6. Except for the two ends, the other adjacent two wire storage long grooves in the circuit breaker wire area are arranged at equal angular intervals.

[0025] As Figure 3 shown, a damping member 13 is provided between the wire storage disc 6 and the main shaft 5 to make the wire storage disc 6 rotate with damping relative to the rotating shaft. The main shaft 5 is successively provided with a first wire storage disc 14, a second wire storage disc 15, and a third wire storage disc 16 at intervals from top to bottom. The damping member 13 is a rubber sleeve fixed on the main shaft 5. The upper end of the rubber sleeve is thin and the lower end is thick. After the wire storage disc 6 is sleeved on the main shaft 5, the rubber sleeve provides rotational damping. As a simple replacement for the above solution, the damping member 13 is an elastic structure such as a silica gel sleeve.

[0026] As a medium-voltage high-voltage isolation cabinet proposed in another embodiment of the present invention, as Figure 4 shown, the difference from the above embodiment is only that: a fixing column 17 is connected between the first wire storage disc 14 and the second wire storage disc 15 to make them rotate synchronously. The second wire storage disc 15 and the main shaft 5 are sleeved after being filled with a rubber sleeve. A locking nut 18 is threadedly connected to the main shaft 5 below the third wire storage disc 16, and a convex portion for abutting against the upper side of the third wire storage disc 16 is provided on the main shaft 5. In this embodiment, the diameter of the threaded section at the lower end of the main shaft 5 is smaller than the diameter of the main shaft 5, so that a shoulder is formed at the upper end of the threaded section of the main shaft 5, and the shoulder serves as the convex portion for abutting against the upper side of the third wire storage disc 16. The first wire storage disc 14 and the second wire storage disc 15 can rotate together, driving the whole section of the cable to rotate together. The whole section of the cable remains upright, which is convenient for upward connection to the instrument and the circuit breaker. The third wire storage disc 16 can be pressed tightly against the main shaft 5 through the locking nut 18 and the convex portion and no longer rotates. The setting of the fixing column 17 between the first wire storage disc 14 and the second wire storage disc 15 enables them to rotate simultaneously. Therefore, when storing the cable, only by rotating the first wire storage disc 14 or the second wire storage disc 15, the rotation and elongation of the cable between the second wire storage disc 15 and the third wire storage disc 16 can be realized, and the free section of the cable is wound around the main shaft 5, avoiding random accumulation of the free section of the cable in the cable chamber due to the excessive length of the free section of the cable, and the storage function is reliable.

Claims

1. A central high-voltage isolation cabinet includes a cabinet body, in which an instrument room, a circuit breaker room and a cable room are arranged in sequence from top to bottom, and is characterized in that: The cable chamber is provided with a vertical main shaft, on which a plurality of spaced wire storage disks are rotatably provided, and on which a plurality of opening wire storage slots are provided, and the cables are inserted into the wire storage slots from the openings for storage.

2. The centrally mounted high voltage isolation cabinet according to claim 1 is characterized in that: The cable storage disk is in the shape of a disk, and is divided into a busbar area, an instrument line area and a circuit breaker line area in the circumferential direction thereof.

3. The centrally mounted high voltage isolation cabinet according to claim 2 is characterized in that: The first wire storage groove in the busbar area is arranged in a fan shape, and the opening is located in the circumference of the wire storage groove and is provided with a neck.

4. The centrally mounted high voltage isolation cabinet according to claim 2 is characterized in that: The second wire storage slot in the instrument wire area is a long slot with an open end, and a plurality of recesses arranged at intervals are arranged on the slot wall of the long slot, and each of the recesses is marked.

5. The centrally mounted high voltage isolation cabinet according to claim 2 is characterized in that: The third wire storage slot of the circuit breaker wire area includes a plurality of long wire storage slots radially distributed around the wire storage disk, and the long wire storage slots are arranged at intervals.

6. The centrally mounted high voltage isolation cabinet according to claim 1 is characterized in that: A damping member is provided between the wire storage disk and the main shaft to damp the rotation of the wire storage disk relative to the rotating shaft.

7. The centrally mounted high voltage isolation cabinet according to any one of claims 1 to 6, characterized in that: The main shaft is provided with a first wire storage disk, a second wire storage disk and a third wire storage disk in sequence from top to bottom, a fixing column is connected between the first wire storage disk and the second wire storage disk so that the two can rotate synchronously, the main shaft is threadedly connected with a locking nut located on the lower side of the third wire storage disk, and the main shaft is provided with a convex portion for resisting the upper side of the third wire storage disk.

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