Pressure relief channel of switch cabinet and medium-voltage nuclear power switch cabinet provided with pressure relief channel

Abstract

The utility model provides a switch cabinet pressure relief channel and a medium voltage nuclear power switch cabinet equipped with the pressure relief channel, the switch cabinet pressure relief channel comprises two groups of side plates arranged in parallel, the tops of the two groups of side plates are fixedly equipped with a top cover plate, the two ends of the two groups of side plates are fixedly equipped with sealing plates, and the side plates, the top cover plate and the sealing plates form a box-shaped structure. The top cover plate is provided with a vent hole, an inner lining plate is fixedly mounted at the bottom of the top cover plate, an outer lining plate is arranged at the top of the top cover plate, a supporting plate is mounted between the inner lining plate and the top cover plate, and the outer lining plate, the inner lining plate and the supporting plate correspond to the vent hole in position. The medium-voltage nuclear power switch cabinet is provided with the switch cabinet pressure relief channel, so that when an arcing fault occurs in a compartment of one medium-voltage nuclear power switch cabinet, internal arcing gas can be timely discharged after being filtered layer by layer. And personnel and equipment in the power distribution room can be effectively protected from being damaged.

Description

Technical Field

[0001] The utility model belongs to the field of switch cabinet equipment, and particularly relates to a pressure relief channel for a switch cabinet and a medium-voltage nuclear power switch cabinet equipped with the pressure relief channel. Background Art

[0002] At present, medium-voltage distribution switch cabinets are mainly used in power plants, power transmission for small and medium-sized generators, power distribution in industrial and mining enterprises, power reception, power transmission in secondary substations of the power system, and starting of large high-voltage motors, etc., to achieve control, protection, and detection functions. Due to its excellent product performance, perfect five-prevention interlock function, and convenient operation and maintenance, it is widely used in the power system. As a type of medium-voltage distribution switch cabinet, the medium-voltage nuclear power switch cabinet needs to be provided with a pressure release channel at the top due to its special operating environment and high operating requirements, directly releasing the internal arc pressure and flame into the pressure relief channel without any damage to the personnel and equipment inside the distribution room. The pressure relief channel can also be led out to the outside of the switch room in various directions such as both sides, front, and rear of the switch cabinet according to the layout of the switch room. An air outlet is provided at the upper part of the pressure relief channel, and the arc-burning gas is filtered layer by layer through the structure inside the channel and then discharged. At the same time, the top can meet the requirements of IP43 protection level for waterproofing.

[0003] Therefore, in view of the deficiencies of the above solutions in actual production and implementation, a pressure relief channel for a switch cabinet and a medium-voltage nuclear power switch cabinet equipped with the pressure relief channel are provided to solve the above technical problems. Summary of the Utility Model

[0004] The utility model provides a pressure relief channel for a switch cabinet and a medium-voltage nuclear power switch cabinet equipped with the pressure relief channel, solving the problems in the prior art.

[0005] The technical solution of the utility model is realized as follows: A pressure relief channel for a switch cabinet includes two groups of parallel side plates, a top cover plate is fixedly installed at the top of the two groups of side plates, sealing plates are fixedly installed at both ends of the two groups of side plates, the side plates, the top cover plate and the sealing plates form a box-shaped structure, the top cover plate is provided with ventilation holes, an inner lining plate is fixedly installed at the bottom of the top cover plate, an outer lining plate is arranged at the top of the top cover plate, a support plate is installed between the inner lining plate and the top cover plate, and the outer lining plate, the inner lining plate, the support plate and the ventilation holes are corresponding in position.

[0006] As a preferred embodiment, the inner lining plate is provided with round holes, and the cross-section of the inner lining plate is W-shaped.

[0007] As a preferred embodiment, the diameter of the round hole is 12 mm.

[0008] As a preferred embodiment, the cross-section of the outer lining plate is W-shaped.

[0009] As a preferred embodiment, the pallet is provided with square holes, and a plurality of square holes are evenly arranged on the pallet.

[0010] As a preferred embodiment, the side length of the square hole is smaller than the diameter of the round hole.

[0011] As a preferred embodiment, a waterproof cover plate is fixedly installed on the top of the outer lining plate, and the waterproof cover plate is matched with the shape of the outer lining plate. A pressure relief plate is fixedly installed on the top cover plate, a placement cavity is arranged on the pressure relief plate, and the outer lining plate passes through the placement cavity.

[0012] A medium-voltage nuclear power switch cabinet is installed with the switch cabinet pressure relief channel described above.

[0013] As a preferred embodiment, the medium-voltage nuclear power switch cabinet includes a plurality of compartments, the switch cabinet pressure relief channel is located at the top of the medium-voltage nuclear power switch cabinet, and when an arc fault occurs in the compartment of the medium-voltage nuclear power switch cabinet, the plurality of compartments are communicated with the switch cabinet pressure relief channel.

[0014] As a preferred embodiment, pressure relief covers are respectively installed on the tops of the plurality of compartments, and the pressure relief covers are installed on the tops of the plurality of compartments by adopting a single-side hinge chamber structure.

[0015] After adopting the above technical solutions, the beneficial effects of the present invention are as follows: The present invention discloses a switch cabinet pressure relief channel and a medium-voltage nuclear power switch cabinet installed with the pressure relief channel. A switch cabinet pressure relief channel is installed on the top of the medium-voltage nuclear power switch cabinet, which can meet the requirement of timely discharging the internal arc gas through layer-by-layer filtration when an arc fault occurs in one of the compartments of the medium-voltage nuclear power switch cabinet. It can effectively protect the personnel and equipment inside the power distribution room from any damage. In summary, the switch cabinet pressure relief channel and the medium-voltage nuclear power switch cabinet installed with the pressure relief channel have reasonable structures, good use effects, and are suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0018] Figure 2 It is a partial structural schematic diagram of Embodiment 1 of the present invention;

[0019] Figure 3Schematic side view structure diagram of Embodiment 1 of the present utility model;

[0020] Figure 4 Schematic structure diagram of the side plate of the present utility model;

[0021] Figure 5 Schematic structure diagram of the top cover plate of the present utility model;

[0022] Figure 6 Schematic structure diagram of the support plate of the present utility model;

[0023] Figure 7 Schematic structure diagram of the pressure relief plate of the present utility model;

[0024] Figure 8 Schematic structure diagram of the inner lining plate of the present utility model;

[0025] Figure 9 Schematic structure diagram of the outer lining plate of the embodiment of the present utility model;

[0026] Figure 10 Schematic structure diagram of the water discharge cover plate of the present utility model;

[0027] Figure 11 Schematic structure diagram of the backing plate of the present utility model;

[0028] Figure 12 Schematic structure diagram of the upper strengthening elbow of the present utility model;

[0029] Figure 13 Schematic structure diagram of the lower strengthening elbow of the present utility model;

[0030] Figure 14 Schematic front view structure diagram of Embodiment 2 of the present utility model;

[0031] Figure 15 Schematic sectional view structure diagram of Embodiment 2 of the present utility model;

[0032] Figure 16 Schematic side view structure diagram of Embodiment 2 of the present utility model.

[0033] In the figure, 1. side plate; 2. top cover plate; 3. support plate; 4. pressure relief plate; 5. inner lining plate; 6. outer lining plate; 7. waterproof cover plate; 8. backing plate; 9. upper strengthening elbow; 10. lower strengthening elbow; 11. nuclear power switch cabinet body; 12. sealing filling material; 13. sealing plate; 14. pressure relief cover. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] Embodiment 1: As Figures 1 to 13 shown, a pressure relief channel for a switch cabinet includes two groups of side plates 1 arranged in parallel. A top cover plate 2 is fixedly installed at the top of the two groups of side plates 1. Sealing plates 13 are fixedly installed at both ends of the two groups of side plates 1. The side plates 1, the top cover plate 2 and the sealing plates 13 form a box-shaped structure. The top cover plate 2 is provided with ventilation holes. An inner lining plate 5 is fixedly installed at the bottom of the top cover plate 2. An outer lining plate 6 is arranged at the top of the top cover plate 2. A support plate 3 is installed between the inner lining plate 5 and the top cover plate 2. The outer lining plate 6, the inner lining plate 5, the support plate 3 and the ventilation holes are corresponding in position.

[0036] The inner lining plate 5 is provided with round holes, and the cross-section of the inner lining plate 5 is W-shaped. The inner lining plate 5 is formed by bending a round-hole mesh plate.

[0037] In this embodiment, the diameter of the round hole is 12 mm.

[0038] The cross-section of the outer lining plate 6 is W-shaped. Specifically, the lining plate is formed by bending a fine fish-scale hole plate.

[0039] The support plate 3 is provided with square holes, and a plurality of square holes are evenly arranged on the support plate 3.

[0040] In this embodiment, the side length of the square hole is smaller than the diameter of the round hole.

[0041] A waterproof cover plate 7 is fixedly installed at the top of the outer lining plate 6, and the waterproof cover plate 7 is matched with the outer lining plate 6 in shape. A pressure relief plate 4 is fixedly installed on the top cover plate 2. The pressure relief plate 4 is provided with a placement cavity, and the outer lining plate 6 passes through the placement cavity.

[0042] Embodiment 2: As Figures 14 to 16 shown, a medium-voltage nuclear power switch cabinet is installed with the above-mentioned pressure relief channel for a switch cabinet.

[0043] The medium-voltage nuclear power switch cabinet includes a nuclear power switch cabinet body 11. The nuclear power switch cabinet body 11 is provided with a plurality of compartments. The pressure relief channel for the switch cabinet is located at the top of the medium-voltage nuclear power switch cabinet. When an arc fault occurs in the compartments of the medium-voltage nuclear power switch cabinet, three compartments are connected to the pressure relief channel for the switch cabinet.

[0044] Pressure relief covers 14 are respectively installed at the tops of the three compartments. The pressure relief covers 14 are installed at the tops of the three compartments by using a single-side hinge chamber structure. In this embodiment, the three compartments are respectively a cable compartment, a bus compartment and a handcart compartment.

[0045] Without changing the structure of the existing medium-voltage nuclear power switchgear equipment, closed pressure relief channels are installed at the tops of three high-voltage compartments (cable compartment, busbar compartment, and handcart compartment), and at the same time, the cable compartment, busbar compartment, and handcart compartment are sealed into the channels. Pressure relief covers 14 are provided at the tops of the three high-voltage compartments. The three pressure relief covers 14 adopt a single-side hinge chamber structure, which can ensure that when a fault gas appears in the high-voltage compartment, it can be quickly opened under the impact of the internal pressure. The single-side setting of the hinge can ensure that the pressure relief cover 14 will not be completely ejected under the action of the internal arc-burning gas. The channel is assembled by three-sided metal plates, and an inner lining plate 5 is installed inside the channel. The inner lining plate 5 is bent from a round-hole plate and has a W-shaped structure. During an arc-burning fault, the W structure can increase the impact area of the fault gas. At the same time, the adopted round-hole plate can filter out a part of the solid dust of the damaged components for the first-stage filtration. A support plate 3 with a square-hole structure is installed on the upper part of the channel. The aperture of the support plate is slightly smaller than the round holes on the inner lining plate 5, which can conduct a second-stage filtration on the fixed dust in the arc-burning gas. An outer lining plate 6 is installed outside the channel. The outer lining plate 6 is bent from a fine-scale fish-scale hole plate and also has a W-shaped structure. The outer lining plate 6 can play two roles. One is to conduct a third-stage filtration on the gas discharged from the channel, and the other is to increase the contact surface of the discharged gas, decompose the impact force, and change its direction. A waterproof cover plate 7 is installed on the upper part of the outer lining plate 6 to ensure that the waterproof requirement is met.

[0046] Each cabinet is equipped with a set of pressure relief channels equivalent to the cabinet width. After multiple cabinets are assembled, the gaps between the channels are filled with sealing and filling materials such as rubber gaskets 12 to ensure its sealing performance. The difference in plate thickness is eliminated by the upper cushion plate 8. At the same time, L-shaped elbows are installed on both the left and right sides at the corners to meet the reliability of fastening. The two sides of each row of cabinets are blocked by sealing plates 13 made of metal materials to ensure that the pressure relief channels at the upper part of the whole row of nuclear power switchgear are connected and airtight. Among them, the L-shaped elbow specifically includes an upper strengthening elbow 9 and a lower strengthening elbow 10.

[0047] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A switch cabinet pressure relief channel, comprising two sets of side panels (1) arranged in parallel, top cover panels (2) being fixedly mounted on the tops of the two sets of side panels (1), sealing panels being fixedly mounted on both ends of the two sets of side panels (1), and the side panels (1), the top cover panels (2) and the sealing panels forming a box-shaped structure; Features: The top cover plate (2) is provided with a vent hole, an inner lining plate (5) is fixedly mounted on the bottom of the top cover plate (2), an outer lining plate (6) is arranged on the top of the top cover plate (2), a support plate (3) is mounted between the inner lining plate (5) and the top cover plate (2), and the outer lining plate (6), the inner lining plate (5) and the support plate (3) correspond to the positions of the vent hole.

2. The switch cabinet pressure relief channel according to claim 1, characterized in that: The inner lining plate (5) is provided with a circular hole, and the cross section of the inner lining plate (5) is W-shaped.

3. The switch cabinet pressure relief channel according to claim 2, characterized in that: The diameter of the circular hole is 12 mm.

4. The switch cabinet pressure relief channel according to claim 3, characterized in that: The cross section of the outer lining plate (6) is W-shaped.

5. The switch cabinet pressure relief channel according to claim 3, characterized in that: The support plate (3) is provided with a square hole, and a plurality of the square holes are evenly arranged on the sealing plate.

6. The switch cabinet pressure relief channel according to claim 5, characterized in that: The side length of the square hole is smaller than the diameter of the circular hole.

7. The switch cabinet pressure relief channel according to claim 1, characterized in that: A waterproof cover plate (7) is fixedly mounted on the top of the outer lining plate (6), and the waterproof cover plate (7) matches the shape of the outer lining plate (6); The top cover plate (2) is fixedly mounted with a pressure relief plate (4), the pressure relief plate (4) being provided with a placement cavity, and the outer lining plate (6) passing through the placement cavity.

8. A medium voltage nuclear power switch cabinet, characterized in that: A switch cabinet pressure relief channel as described in any one of claims 1 to 7 is installed.

9. The medium voltage nuclear power switch cabinet according to claim 8, characterized in that: The medium-voltage nuclear power switch cabinet comprises a plurality of compartments, and the switch cabinet pressure relief passage is located at the top of the medium-voltage nuclear power switch cabinet. When an arcing fault occurs in the compartment of the medium-voltage nuclear power switch cabinet, the plurality of compartments are connected to the switch cabinet pressure relief passage.

10. The medium voltage nuclear power switch cabinet according to claim 9, characterized in that: Pressure relief covers (14) are respectively installed on the tops of the multiple compartments, and the pressure relief covers (14) are installed on the tops of the multiple compartments using a single-side hinged chamber structure.

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