CN112044003A

CN112044003A - Cable tunnel fire protection system

Info

Publication number: CN112044003A
Application number: CN202010973764.4A
Authority: CN
Inventors: 冷冽; 罗挺; 屈科路
Original assignee: Sichuan Jian'an Weiye Construction Engineering Co ltd
Current assignee: Sichuan Jian'an Weiye Construction Engineering Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2020-12-08
Anticipated expiration: 2040-09-16
Also published as: CN112044003B

Abstract

The application relates to a cable tunnel fire protection system, which belongs to the technical field of fire engineering and comprises a hanging frame, a tank body and a storage tank, wherein a spray pipe is arranged at the bottom of the tank body, and a sleeve is sleeved outside the spray pipe; the tank body is provided with an air outlet pipe communicated with the tank body, the air outlet pipe is provided with a valve, one end of the air outlet pipe, which is far away from the tank body, is communicated with a first branch pipe and a second branch pipe, the first branch pipe is communicated with the storage tank, the storage tank is communicated with a conveying pipe, and the conveying pipe is communicated with the spray pipe; the second branch pipe is communicated with the sleeve. When the conflagration breaks out, the fire extinguishing agent in the storage tank forms the gas-solid mixture under high-pressure carbon dioxide gas's effect, then enters into the spray tube in, and a subdivision carbon dioxide gas enters into the sleeve pipe and then spouts, and the internal spun carbon dioxide gas parcel of sleeve pipe forms the protective layer outside the gas-solid mixture, and the fire extinguishing agent of being convenient for can reach the burning things which may cause a fire disaster smoothly and locate to adhere to on the circuit, improves fire extinguishing effect effectively.

Description

Cable tunnel fire protection system

Technical Field

The application relates to the technical field of fire engineering, in particular to a cable tunnel fire protection system.

Background

Cable tunnel refers to a corridor or tunnel-like structure for accommodating a large number of cables laid on cable supports. The cable tunnel can protect the cable better and also can facilitate the inspection and maintenance of the cable by people. Electric and cable equipment generally adopts a water mist fire extinguishing system.

However, water in the water mist fire extinguishing system is easily conductive, electrical accidents such as grounding, short circuit and blasting can easily occur when electrical and cable equipment meets water, and if the fire is large, the line can explode when meeting water, so that a larger fire is caused, and the fire extinguishing efficiency is low.

Disclosure of Invention

In order to improve the efficiency of putting out a fire to the cable, this application provides a cable tunnel fire protection system.

The application provides a cable tunnel fire protection system adopts following technical scheme:

a cable tunnel fire protection system comprises a hanging frame, a tank body used for storing carbon dioxide and a storage tank used for storing a fire extinguishing agent, wherein a spray pipe is arranged at the bottom of the tank body, a sleeve is sleeved outside the spray pipe, and a gap is formed between the sleeve and the spray pipe; the tank body is provided with an air outlet pipe communicated with the tank body, the air outlet pipe is provided with a valve, one end of the air outlet pipe, far away from the tank body, is communicated with a first branch pipe and a second branch pipe, the first branch pipe is communicated with a storage tank, the storage tank is communicated with a conveying pipe, and the conveying pipe is communicated with a spray pipe; the second branch pipe is communicated with the sleeve.

By adopting the technical scheme, when a fire disaster happens, the valve is opened, carbon dioxide in the tank body enters the material storage tank through the first branch pipe, the fire extinguishing agent in the material storage tank forms a gas-solid mixture of the fire extinguishing agent and the carbon dioxide under the action of high-pressure carbon dioxide gas, the mixture enters the material conveying pipe and then enters the spray pipe, a part of the carbon dioxide gas enters the sleeve pipe through the second branch pipe, finally the carbon dioxide gas in the sleeve pipe and the gas-solid mixture in the spray pipe are sprayed out together, the carbon dioxide gas sprayed out of the sleeve pipe is wrapped outside the gas-solid mixture to form a protective layer, so that the fire extinguishing agent can smoothly reach a fire source and be attached to a line, and the; and the carbon dioxide is matched with the fire extinguishing agent, so that the fire extinguishing efficiency is improved.

Preferably: the storage tank overcoat is equipped with the shell, has the clearance between shell and the storage tank, fixedly connected with connecting strip between shell and the storage tank.

Through adopting above-mentioned technical scheme, there is the clearance between shell and the storage tank, forms thermal-insulated cavity, reduces storage tank and external heat exchange effectively, guarantees the constancy of temperature in the storage tank, improves the stability and the quality guarantee life of fire extinguishing agent in the storage tank.

Preferably: the connecting strip comprises a first fixing strip, a second fixing strip and a heat insulation strip, the first fixing strip is fixedly connected with the inner wall of the shell, the second fixing strip is fixedly arranged on the storage tank, one end of the heat insulation strip is connected with the first fixing strip, and the other end of the heat insulation strip is connected with the second fixing strip.

By adopting the technical scheme, the first fixing strip and the second fixing strip are separated by the heat insulation strip, and the heat insulation strip has better heat insulation performance, so that a heat insulation broken bridge is formed, the heat exchange between the outside and the storage tank is effectively reduced, the constant temperature in the storage tank is ensured, and the stability of the fire extinguishing agent in the storage tank is improved; simultaneously first fixed strip, second fixed strip and heat insulating strip separate into a plurality of independent cavitys with the casing, reduce because of the casing air flows, further reduce the heat exchange, improve that the extinguishing agent is in lower constant temperature environment in the storage tank.

Preferably: the shell comprises a shell body and a cover plate, and the cover plate is detachably connected with the shell body.

By adopting the technical scheme, during installation, the shell is sleeved on the material storage tank, and then the cover plate is installed and fixed on the shell; the cover plate is detachably connected with the shell, so that the shell can be conveniently replaced and maintained.

Preferably: the dovetail groove has all been seted up along vertical direction to the one end that first fixed strip and second fixed strip are close to each other, the both ends of heat insulating strip are provided with the dovetail block with dovetail groove looks adaptation.

Through adopting above-mentioned technical scheme, forked tail piece and dovetail cooperation play the purpose of connecting fixed first fixed strip and second fixed strip, inject the storage tank position, guarantee the stability of storage tank position.

Preferably: and the outer wall of the shell is provided with a heat insulation plate.

Through adopting above-mentioned technical scheme, the setting of heat insulating board plays and reduces external heat transfer to the casing, and then reduces the casing and give the air in the casing with heat transfer, improves holistic thermal-insulated effect.

Preferably: the outer wall of casing is fixed and is provided with four installation pieces, four the installation piece distributes along the circumference of casing, the installation piece is close to the lateral wall of another installation piece and has seted up the mounting groove along vertical direction, the both ends of heat insulating board are inlayed and are located in the mounting groove.

Through adopting above-mentioned technical scheme, during the installation, with the heat insulating board disect insertion mounting groove can, if need maintain when changing the heat insulating board, take out the heat insulating board then insert new heat insulating board can, convenient operation.

Preferably: the hanging rack comprises a fixed rod and a movable rod, the movable rod penetrates through the fixed rod in a sliding mode, and a limiting part used for limiting the position of the movable rod is arranged on the fixed rod.

Through adopting above-mentioned technical scheme, as required, along the dead lever slip movable rod, treat that stores pylon length adjustment is good the back, the rethread locating part inject the movable rod position can, realize the purpose of adjusting jar body and storage tank position.

Preferably: the sleeve is in threaded connection with the spray pipe, and a limiting table used for being abutted to the end face of the sleeve is sleeved on the spray pipe in a threaded mode.

By adopting the technical scheme, the length of the bottom end of the adjusting sleeve extending out of the spraying pipe is realized by rotating the spraying pipe, namely the precession amount of the adjusting sleeve is adjusted, and further the angle and the range of the carbon dioxide gas sprayed out of the sleeve are adjusted.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when a fire disaster happens, a valve is opened, carbon dioxide in a tank body enters a material storage tank through a first branch pipe, a fire extinguishing agent in the material storage tank forms a gas-solid mixture of the fire extinguishing agent and the carbon dioxide under the action of high-pressure carbon dioxide gas, the mixture enters a conveying pipe and then enters a spray pipe, a part of the carbon dioxide gas enters a sleeve through a second branch pipe, finally the carbon dioxide gas in the sleeve and the gas-solid mixture in the spray pipe are sprayed out together, the carbon dioxide gas sprayed out of the sleeve is wrapped outside the gas-solid mixture to form a protective layer, so that the fire extinguishing agent can smoothly reach a fire source and be attached to a line, and the fire extinguishing effect is; the carbon dioxide is matched with the fire extinguishing agent, so that the fire extinguishing efficiency is improved;

2. the first fixing strip and the second fixing strip are separated by the heat insulation strip, the heat insulation strip has good heat insulation performance, and further a heat insulation broken bridge is formed, so that heat exchange between the outside and the storage tank is effectively reduced, the constant temperature in the storage tank is ensured, and the stability of the fire extinguishing agent in the storage tank is improved; meanwhile, the shell is divided into a plurality of independent cavities by the first fixing strips, the second fixing strips and the heat insulation strips, so that the air flow of the shell is reduced, the heat exchange is further reduced, and the condition that the fire extinguishing agent in the material storage tank is in a lower constant temperature environment is improved;

3. the length of the bottom end of the adjusting sleeve extending out of the spraying pipe is achieved by rotating the spraying pipe, namely the precession amount of the adjusting sleeve is adjusted, and further the angle and the range of carbon dioxide gas sprayed out of the adjusting sleeve are adjusted.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a hanger according to an embodiment of the present application;

FIG. 3 is an exploded view of an embodiment of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is an enlarged view of a portion B in fig. 3.

Description of reference numerals: 1. a hanger; 11. fixing the rod; 111. a limiting hole; 1111. a limit bolt; 12. a movable rod; 121. a threaded hole; 2. a tank body; 21. an air outlet pipe; 211. a first branch pipe; 212. a second branch pipe; 3. a material storage tank; 31. a delivery pipe; 4. a nozzle; 41. a sleeve; 42. a limiting table; 5. a valve; 51. a connecting pipe; 52. a sphere; 521. a through hole; 53. a motor; 6. a housing; 61. a housing; 62. a cover plate; 71. a first fixing strip; 72. a second fixing strip; 73. a heat insulating strip; 731. a dovetail block; 74. a dovetail groove; 8. mounting blocks; 81. mounting grooves; 811. a heat insulation plate; 9. a pressure pipe; 91. a pull rod; 911. a piston; 912. a pressure spring; 913. and (4) a boss.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses cable tunnel fire protection system.

Referring to fig. 1, a cable tunnel fire protection system includes a hanger 1, a tank 2 for storing carbon dioxide and a storage tank 3 for storing a fire extinguishing agent, wherein the fire extinguishing agent may be a dry powder fire extinguishing agent or calcium bicarbonate. Jar body 2 and storage tank 3 are withstand voltage stainless steel and make, and jar body 2 is fixed to be set up in the below of storage tank 3.

Referring to fig. 1 and 2, the hanger 1 includes a fixed rod 11 and a movable rod 12, and the movable rod 12 is slidably disposed in the fixed rod 11. The bottom wall of the movable rod 12 is fixedly connected with the material storage tank 3. The fixed rod 11 is provided with a limiting part for limiting the position of the movable rod 12, the movable rod 12 is provided with a plurality of threaded holes 121, the plurality of threaded holes 121 are evenly distributed along the length direction of the movable rod 12 at intervals, the side wall of the fixed rod 11 is provided with a limiting hole 111, and the limiting part is a limiting bolt 1111 which is rotatably arranged in the limiting hole 111 in a penetrating manner.

According to needs, along the movable rod 12 of dead lever 11 slip, treat that 1 length adjustment of stores pylon back, rotate limit bolt 1111 to make limit bolt 1111 with screw hole 121 threaded connection can, realize adjusting the mesh of jar body 2 and storage tank 3 position.

Referring to fig. 3 and 4, an air outlet pipe 21 communicated with the tank 2 is arranged on the tank 2, a valve 5 is arranged on the air outlet pipe 21, the valve 5 comprises a connecting pipe 51, a ball 52 and a motor 53, the connecting pipe 51 is horizontally arranged, and two ends of the connecting pipe are respectively communicated with the air outlet pipe 21. A spherical groove is formed in the connecting pipe 51, the sphere 52 is rotatably disposed in the spherical groove, the sphere 52 is attached to the wall of the spherical groove, and a through hole 521 is formed in the sphere 52 along the horizontal direction. The motor 53 is disposed on the connecting tube 51, and an output shaft of the motor 53 extends into the connecting tube 51 and is fixedly connected to the sphere 52, and the motor 53 is a servo motor 53.

In addition, referring to fig. 1 and 3, a smoke sensor and a controller are arranged on the tank body 2, the smoke sensor is electrically connected with the controller, and the controller is electrically connected with the motor 53 and the water pump; when the smoke sensor senses a fire, the smoke sensor transmits a signal to the controller, and the controller transmits a control signal to the motor 53, so that the motor 53 is started to drive the ball 52 to rotate ninety degrees, so that the connecting pipe 51 is communicated with the through hole 521.

Referring to fig. 1 and 3, a nozzle 4 is arranged at the bottom of the tank body 2, a sleeve 41 is sleeved outside the nozzle 4, and a gap is arranged between the sleeve 41 and the nozzle 4. One end of the air outlet pipe 21, which is far away from the tank body 2, is communicated with a first branch pipe 211 and a second branch pipe 212, the first branch pipe 211 is communicated with the storage tank 3, and the second branch pipe 212 is communicated with the sleeve 41.

Referring to fig. 1, the sleeve 41 is screwed on the nozzle 4, the nozzle 4 is screwed with a limit table 42, and the limit table 42 is used for abutting against one end of the sleeve 41 close to the tank 2. The outer wall of spray tube 4 is provided with the helicla flute to make the carbon dioxide in the sleeve pipe 41 play the water conservancy diversion effect, make the parcel that sleeve pipe 41 spun carbon dioxide air current can be more even in the gas periphery of 4 spun in spray tube, be convenient for send into fire extinguishing agent into fire source department, improve the fire-extinguishing effect. The inner wall of the end of the sleeve 41 away from the tank body 2 is provided with a guide slope, and the inner diameter of the sleeve 41 is sequentially increased from top to bottom.

Referring to fig. 3 and 5, the storage tank 3 is communicated with a feed delivery pipe 31, and the feed delivery pipe 31 is communicated with the spray pipe 4. The conveying pipe 31 is communicated with a pressure pipe 9, the bottom end of the pressure pipe 9 is communicated with the storage tank 3, the side wall of the pressure pipe 9 is provided with a gas outlet, the gas outlet is communicated with the conveying pipe 31, and the gas outlet is positioned in the middle of the pressure pipe 9. Slide in the pressure pipe 9 and wear to be equipped with pull rod 91, pull rod 91 is on a parallel with pressure pipe 9, and pull rod 91's bottom mounting is provided with piston 911, and piston 911 is laminated with pressure pipe 9's inner wall, and the cover is equipped with pressure spring 912 on pull rod 91, the one end of pressure spring 912 and the roof butt of piston 911, the other end and pressure pipe 9's roof butt. A boss 913 is fixedly disposed at the end of the pull rod 91 extending out of the pressure tube 9. When the boss 913 abuts against the top wall of the pressure tube 9, the piston 911 is located below the air outlet.

Referring to fig. 3, storage tank 3 overcoat is equipped with shell 6, has the clearance between shell 6 and the storage tank 3, and shell 6 includes casing 61 and apron 62, and apron 62 can be dismantled with casing 61 and be connected, and apron 62 passes through connecting bolt and is connected with casing 61, and connecting bolt sets up four, and even interval distribution is around apron 62.

Referring to fig. 3 and 5, a connecting strip is fixedly connected between the housing 6 and the storage tank 3, and the connecting strip includes a first fixing strip 71, a second fixing strip 72 and a heat insulation strip 73. The first fixing strip 71 is fixedly connected with the inner wall of the housing 6, and the second fixing strip 72 is fixedly arranged on the storage tank 3. One end of the heat insulation strip 73 is connected with the first fixing strip 71, the other end of the heat insulation strip 73 is connected with the second fixing strip 72, and the heat insulation strip 73 is an adhesive tape and has a good heat insulation effect.

There is the clearance between shell 6 and the storage tank 3, forms thermal-insulated cavity, reduces storage tank 3 effectively and carries out the heat exchange with the external world, guarantees the constancy of temperature in the storage tank 3, improves the stability and the quality guarantee life of fire extinguishing agent in the storage tank 3. The first fixing strip 71 and the second fixing strip 72 are separated by the heat insulation strips 73, and the heat insulation strips 73 have good heat insulation performance, so that a heat insulation broken bridge is formed, heat exchange between the outside and the storage tank 3 is effectively reduced, the constant temperature in the storage tank 3 is ensured, and the stability of the fire extinguishing agent in the storage tank 3 is improved; simultaneously first fixed strip 71, second fixed strip 72 and heat insulating strip 73 separate into a plurality of independent cavitys with casing 61, reduce because of casing 61 air flow, further reduce the heat exchange, improve that the fire extinguishing agent is in lower constant temperature environment in the storage tank 3.

Referring to fig. 3 and 5, dovetail grooves 74 are formed in both ends of the first fixing strip 71 and the second fixing strip 72 close to each other in the vertical direction, and dovetail blocks 731 adapted to the dovetail grooves 74 are disposed at both ends of the heat insulating strip 73. The dovetail block 731 is matched with the dovetail groove 74 to fix the first fixing strip 71 and the second fixing strip 72 in a connecting manner, so that the position of the storage tank 3 is limited, and the stability of the position of the storage tank 3 is ensured.

Referring to fig. 3 and 5, four mounting blocks 8 are fixedly disposed on the outer wall of the housing 61, the four mounting blocks 8 are distributed along the circumferential direction of the housing 61, and the four mounting blocks 8 are distributed at four corners of the housing 61. The outer wall of casing 61 is provided with heat insulating board 811, and installation piece 8 has seted up mounting groove 81 along vertical direction near the lateral wall of another installation piece 8, and the both ends of heat insulating board 811 are inlayed and are located in mounting groove 81.

The heat insulation plate 811 reduces the heat transfer from the outside to the casing 61, and further reduces the heat transfer from the casing 61 to the air in the casing 61, thereby improving the overall heat insulation effect.

The implementation principle of the embodiment of the application is as follows: when a fire breaks out, the valve 5 is opened, carbon dioxide in the tank body 2 enters the storage tank 3 through the first branch pipe 211, and a fire extinguishing agent in the storage tank 3 forms a gas-solid mixture of the fire extinguishing agent and the carbon dioxide under the action of high-pressure carbon dioxide gas and enters the conveying pipe and then enters the spray pipe 4. And a part of carbon dioxide gas enters the sleeve 41 through the second branch pipe 212, and finally the carbon dioxide gas in the sleeve 41 and the gas-solid mixture in the spray pipe 4 are sprayed out together, and the carbon dioxide gas sprayed out of the sleeve 41 is wrapped outside the gas-solid mixture to form a protective layer, so that the fire extinguishing agent can smoothly reach a fire source and be attached to a line, and the fire extinguishing effect is effectively improved; and the carbon dioxide is matched with the fire extinguishing agent, so that the fire extinguishing efficiency is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cable tunnel fire protection system which characterized in that: the fire extinguishing device comprises a hanging frame (1), a tank body (2) for storing carbon dioxide and a storage tank (3) for storing a fire extinguishing agent, wherein a spray pipe (4) is arranged at the bottom of the tank body (2), a sleeve (41) is sleeved outside the spray pipe (4), and a gap is formed between the sleeve (41) and the spray pipe (4); an air outlet pipe (21) communicated with the tank body (2) is arranged on the tank body (2), a valve (5) is arranged on the air outlet pipe (21), a first branch pipe (211) and a second branch pipe (212) are communicated with one end, far away from the tank body (2), of the air outlet pipe (21), the first branch pipe (211) is communicated with the storage tank (3), a material conveying pipe (31) is communicated with the storage tank (3), and the material conveying pipe (31) is communicated with the spray pipe (4); the second branch pipe (212) is communicated with the sleeve (41).

2. A cable tunnel fire protection system according to claim 1, wherein: the storage tank (3) is sleeved with a shell (6), a gap exists between the shell (6) and the storage tank (3), and a connecting strip is fixedly connected between the shell (6) and the storage tank (3).

3. A cable tunnel fire protection system according to claim 2, wherein: the connecting strip comprises a first fixing strip (71), a second fixing strip (72) and a heat insulation strip (73), the first fixing strip (71) is fixedly connected with the inner wall of the shell (6), the second fixing strip (72) is fixedly arranged on the storage tank (3), one end of the heat insulation strip (73) is connected with the first fixing strip (71), and the other end of the heat insulation strip is connected with the second fixing strip (72).

4. A cable tunnel fire protection system according to claim 3, wherein: the shell (6) comprises a shell (61) and a cover plate (62), wherein the cover plate (62) is detachably connected with the shell (61).

5. A cable tunnel fire protection system according to claim 4, wherein: dovetail grooves (74) are all seted up along vertical direction to the one end that first fixed strip (71) and second fixed strip (72) are close to each other, the both ends of heat insulating strip (73) are provided with dovetail block (731) with dovetail groove (74) looks adaptation.

6. A cable tunnel fire protection system according to claim 4, wherein: and a heat insulation plate (811) is arranged on the outer wall of the shell (61).

7. A cable tunnel fire protection system according to claim 6, wherein: the fixed four installation piece (8) that are provided with of outer wall of casing (61), four the circumference of casing (61) is followed in installation piece (8) distributes, installation groove (81) have been seted up along vertical direction to the lateral wall that installation piece (8) are close to another installation piece (8), the both ends of heat insulating board (811) are inlayed and are located in installation groove (81).

8. A cable tunnel fire protection system according to claim 1, wherein: the hanging rack (1) comprises a fixed rod (11) and a movable rod (12), wherein the movable rod (12) penetrates through the fixed rod (11) in a sliding mode, and a limiting part used for limiting the position of the movable rod (12) is arranged on the fixed rod (11).

9. A cable tunnel fire protection system according to claim 1, wherein: the sleeve (41) is in threaded connection with the spray pipe (4), and the limit table (42) used for being abutted to the end face of the sleeve (41) is sleeved on the spray pipe (4) in a threaded mode.