CN113905563B

CN113905563B - Enclosed fire-resistant electrical cabinet

Info

Publication number: CN113905563B
Application number: CN202111186271.7A
Authority: CN
Inventors: 王敏; 刘俊明; 戴平仁; 孙勇
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2023-05-23
Anticipated expiration: 2041-10-12
Also published as: CN113905563A

Abstract

The invention provides a closed type fire-resistant gas holder, which comprises a frame, a left side plate, a rear side plate, a top plate, a right side plate, a bottom plate, a left door plate and a right door plate, wherein the frame is connected with the left side plate, the rear side plate, the top plate, the right side plate and the bottom plate through rivets; the electric cabinet can realize automatic fire extinguishing.

Description

Enclosed fire-resistant electrical cabinet

Technical Field

The invention relates to the field of rail transit auxiliary electrical systems, in particular to a closed type fire-resistant gas holder.

Background

The electric cabinet is used as a key component of the motor train unit, and the inside of the electric cabinet mainly comprises various electric elements such as a breaker, a contactor, a relay, a wiring terminal and the like, a cable and a case.

At present, the fire-resistant electrical cabinet of the existing motor train unit mainly adopts an open or semi-open structure, a protection object of the fire-resistant electrical cabinet is mainly a cabinet body frame rather than a person, and when a fire disaster occurs, smoke and fire can directly cross and ignite objects outside the cabinet.

Disclosure of Invention

The invention aims to design a closed type fire-resistant gas holder, which not only can meet the ventilation and heat dissipation requirements in the gas holder, but also can actively close a heat dissipation channel when the gas holder is on fire to form a closed space, prevent flames from jumping out and further improve the safety of a train in the aspect of fire prevention.

In order to achieve the above purpose, the invention provides a closed fire-resistant electric cabinet, which comprises a frame, a left side plate, a rear side plate, a top plate, a right side plate, a bottom plate, a left door plate and a right door plate, wherein the frame is connected with the left side plate, the rear side plate, the top plate, the right side plate and the bottom plate through rivets, the frame is connected with the left door plate and the right door plate through hinges, the right side of the left door plate is provided with outward flanging, a fire-resistant expansion strip is arranged in the flanging area, a pull rod lock is arranged on the right door plate, a fire-resistant expansion strip is arranged between the frame and the left door plate, ventilation grids are respectively arranged at the bottoms of the left door plate and the right door plate, the ventilation grids are formed by bonding an aluminum alloy grid bracket and a grid strip, the grid strip is in spot welding connection with the grid bracket, a wire through hole of a cable is arranged on the bottom plate, and fire-resistant mud is arranged at the wire hole to realize bottom sealing.

The horizontal plane angle range of the grid strips and the ground is 5-15 degrees, when fire occurs in the cabinet, the fire-resistant expansion strips on two sides of the grid strips expand rapidly, so that ventilation between the interior of the cabinet and the outside of the cabinet can be effectively reduced, and smoke and flame are prevented from escaping.

The ventilating grille is provided with a fan and is positioned at the inner side of the cabinet body.

And 4 mounting cushion blocks are arranged below the bottom plate.

The frame is formed by welding aluminum alloy square tube profiles.

The novel aluminum alloy plate is characterized in that the left side plate, the rear side plate, the top plate, the right side plate and the bottom plate are of a sandwich structure, the sandwich structure is sequentially provided with a fire-resistant heat insulation plate, ceramic heat insulation cotton and an aluminum alloy plate from outside to inside, the sandwich structure is provided with rivet holes, the left side plate, the rear side plate, the top plate, the right side plate and the bottom plate are respectively connected with the frame through rivets, the aluminum alloy plate is provided with a pressing rib, and the pressing rib is provided with rivet holes through the rivets.

And the inner side surface of the aluminum alloy plate is coated with fireproof paint.

The top plate is provided with an automatic fire extinguishing device and a thermal sensor camera.

The invention relates to a closed type electric cabinet which can not only meet the ventilation and heat dissipation requirements in the cabinet, but also actively close a heat dissipation channel when the cabinet is on fire so as to form a closed space and prevent flames from jumping out; the invention realizes that the frame of the cabinet can not collapse or crack in a certain time when the fire in the cabinet is on, and has better structural integrity; the invention solves the heat insulation problem of the cabinet when the fire in the cabinet is on, and prevents the articles outside the cabinet from being ignited due to the too high temperature; the electric cabinet can realize automatic fire extinguishing.

Drawings

FIG. 1 is an explosion diagram of a closed type fire-resistant gas holder;

FIG. 2 is a schematic structural view of a sandwich structure;

FIG. 3 is a schematic structural view of a closed fire resistant gas holder door panel;

FIG. 4 is an enlarged view of "I" in FIG. 3;

FIG. 5 is an enlarged view of "II" in FIG. 3;

FIG. 6 is a schematic view of a structure of a ventilation grille;

FIG. 7 is a schematic view of a structure of a grating strip;

FIG. 8 is a schematic view of the structure of the top plate;

FIG. 9 is a schematic structural view of a base plate;

fig. 10 is an enlarged view of "III" in fig. 9.

In the figure: 1-a frame; 2-left side plate; 3-a rear side plate; 4-top plate; 5-right side plate; 6-refractory intumescent strips; 7-a left door plate; 8-right door panel; 9-a bottom plate; 10-installing a cushion block; 11-a refractory insulation panel; 12-ceramic heat insulation cotton; 13-aluminum alloy plate; 14-fireproof paint; 15-rivets; 16-electrical device equipment in the cabinet; 17-rivet holes; 18-pressing the ribs; 19-hinges; 20-a pull rod lock; 21-a ventilation grille; 22-fans; 23-locking bar; a 24-L type aluminum bracket; 25-aluminum alloy grid support; 26-grid strips; 27-an automatic fire extinguishing device; 28-a thermal sensor camera; 29-fire-resistant mud; 30-a cable; 31-via hole.

Detailed Description

Referring to fig. 1, the invention is composed of a frame 1, a left side plate 2, a rear side plate 3, a top plate 4, a right side plate 5, a fire-resistant expansion strip 6, a right door plate 8, a left door plate 7, a bottom plate 9 and a mounting cushion block 10.

The frame 1 is formed by welding aluminum alloy square tube profiles, the frame 1 is connected with the left side plate 2, the rear side plate 3, the top plate 4, the right side plate 5 and the bottom plate 9 through rivets, the frame 1 is connected with the right door plate 7 and the left door plate 8 through hinges, the fire-resistant expansion strip 6 is arranged between the right door plate 7 and the left door plate 8 and the

frame

1, and 4 installation cushion blocks 10 are arranged below the bottom plate 9.

The left side plate 2, the rear side plate 3, the top plate 4, the right side plate 5 and the bottom plate 9 described with reference to fig. 2 are all of a sandwich structure, and the sandwich structure sequentially comprises a fire-resistant heat insulation plate 11, ceramic heat insulation cotton 12 and an aluminum alloy plate 13 from outside to inside; the sandwich structure is provided with rivet holes 17, and the left side plate 2, the rear side plate 3, the top plate 4, the right side plate 5 and the bottom plate 9 are connected with the frame 1 through rivets 15; the aluminum alloy plate 13 inboard surface scribbles fire-retardant paint 14, be equipped with the clamp 18 on the aluminum alloy plate 13, be equipped with the rivet hole 17 through rivet 15 on the clamp 18, the mould clamp 18 can improve the rigidity of panel, is the tie point through rivet 15 between cabinet interior electrical equipment 16 and the regulator cubicle body, avoids cabinet interior rivet 15 to expose and external environment transfer heat, mould clamp 18 also can provide the stress point for fire-retardant paint 14 carbonization inflation, improves the integrality after the fire-retardant paint 14 carbonization inflation, avoids the fire-retardant paint after the inflation to peel off with the cabinet body and drops.

Referring to fig. 3, 4 and 5, the left door plate 7 and the right door plate 8 are connected with the frame 1 through the hinge 19, the bottoms of the left door plate 7 and the right door plate 8 are respectively provided with a ventilation grid 21, a fan 22 is installed at the ventilation grid 21, a flanging is arranged on the left door plate 7, a pull rod lock 20 is arranged on the right door plate 8, when the left door plate 7 is closed, the right door plate 8 is closed again to press a fire-resistant expansion strip on the flanging of the left door plate 7, and the pull rod lock 20 is rotated to enable a lock rod 23 to extend into a hole corresponding to the frame 1 so as to fix the left door plate and the right door plate.

Referring to fig. 6 and 7, the ventilation grille 21 is composed of an aluminum alloy grille bracket 25 and grille strips 26, the grille strips 26 are formed by bonding an L-shaped aluminum bracket 24 and fire-resistant expansion strips 6, and the angle range between the L-shaped aluminum bracket 24 and a horizontal plane is 5-15 degrees; the grid strips 26 are in spot welding connection with the aluminum alloy grid support 25, so that the ventilation and heat dissipation requirements of a cabinet can be met, when a fire occurs in the cabinet, the fireproof expansion strips 6 expand rapidly, the grid strips 26 rapidly seal heat dissipation channels to form a closed space, the angle range between the grid strips 26 and a horizontal plane is 5-15 degrees, the ventilation between the inside of the cabinet and the outside of the cabinet can be effectively reduced, and smoke and flame are prevented from escaping.

Referring to fig. 8, the top plate 4 is provided with an automatic fire extinguishing device 27 and a thermal sensor camera 28, the thermal sensor camera 28 can monitor the temperature condition in the cabinet in real time, the automatic fire extinguishing device 27 can automatically identify fire danger, and the sensitivity and the stimulus source can be set according to the working condition requirement, so that the fire extinguishing device is started.

Referring to fig. 9 and 10, the bottom plate is provided with a wire passing hole 31, a cable 30 enters the cabinet through the wire passing hole 31, and the wire passing hole 31 is provided with fire-proof mud 29, so that the bottom sealing requirement is met.

All gaps, holes, exposed fasteners and the like are filled and blocked by ceramic wool or fireproof glue.

When the fire in the cabinet is on, the heat sensor camera 28 sends out a signal, the fan 22 stops working, along with the increase of the fire and the increase of the temperature in the cabinet, the fire resistant paint 14, the fire resistant expansion strips 6 around the left door plate 8 and the right door plate 7 and the fire resistant expansion strips 6 of the ventilation grid 21 start to be heated and carbonized and expand rapidly to seal all gaps between the interior and the exterior of the cabinet, air is isolated, and when the temperature in the cabinet rises to the sensitive position of the automatic fire extinguishing device 27, the automatic fire extinguishing device 27 starts to spray dry powder to extinguish the fire.

Claims

1. The utility model provides a closed fire-resistant electric cabinet which characterized in that: including frame, left side board, posterior lateral plate, roof, right side board, bottom plate, left door plant and right door plant, frame and left side board, posterior lateral plate, roof, right side board, bottom plate pass through rivet connection, frame and left door plant, right door plant pass through hinged joint, left side door plant right side have outward turn-ups, turn-ups region is equipped with fire-resistant expansion strip, right door plant on be equipped with the pull rod lock, frame and left and right door plant between be equipped with fire-resistant expansion strip, left door plant and right door plant bottom be equipped with the ventilation grid respectively, the ventilation grid comprises aluminum alloy grid support and grid strip, the grid strip is formed by L-shaped aluminum support and fire-resistant expansion strip bonding, spot welding connection between grid strip and the grid support, the bottom plate be equipped with the wire passing hole through the cable, wire passing hole department is equipped with fire-proof mud, left side board, posterior lateral plate, roof, right side board and bottom plate be sandwich structure by outer to interior order be in proper order fire-resistant paint, ceramic heat insulation cotton and aluminium alloy plate, sandwich structure on have rivet hole, posterior lateral plate, the inside plate that can be equipped with rivet through the roof and the roof respectively, the inside plate is equipped with the rivet.

2. A closed fire resistant gas cabinet according to claim 1, characterized in that: the horizontal plane angle range of the grid strips and the ground is 5-15 degrees.

3. A closed fire resistant gas cabinet according to claim 1, characterized in that: the ventilating grille is provided with a fan and is positioned at the inner side of the cabinet body.

4. A closed fire resistant gas cabinet according to claim 1, characterized in that: and 4 mounting cushion blocks are arranged below the bottom plate.

5. A closed fire resistant gas cabinet according to claim 1, characterized in that: the frame is formed by welding aluminum alloy square tube profiles.

6. A closed fire resistant gas cabinet according to claim 1, characterized in that: the top plate is provided with an automatic fire extinguishing device and a thermal sensor camera.