CN209885099U

CN209885099U - Fire detection pipe automatic fire extinguishing control valve

Info

Publication number: CN209885099U
Application number: CN201920164652.7U
Authority: CN
Inventors: 李金花
Original assignee: Sichuan Vocational and Technical College
Current assignee: Sichuan Vocational and Technical College
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-01-03
Anticipated expiration: 2029-01-30

Abstract

The utility model discloses a fire-detecting tube automatic fire-extinguishing control valve, which comprises a valve body, wherein a piston is arranged on the valve body, a capillary tube which is communicated with an air pressure chamber and an air passage is arranged on the piston, a pressure-releasing stepped hole and an air inlet and outlet are also arranged on the valve body, the air inlet and outlet are intersected with the step surface of the stepped hole at an angle, and a fire-detecting tube connecting seat is arranged on the pressure-releasing stepped hole in a sliding way; the utility model discloses a fire probe tube burst and capillary form instantaneous decompression at the atmospheric pressure room to realize the linkage of equipment, guarantee to take place the initial stage at the conflagration and just put out a fire fast to the burning things which may cause a fire disaster, do not rely on electronic component to realize the automatic fire extinguishing operation simultaneously, the reliability is higher under the condition of the conflagration that takes place, greatly reduced the loss of conflagration, be particularly suitable for narrow and small that personnel can not get into on a large scale, enclosure space's the operation of putting out a fire, the security of production, life has been improved.

Description

Fire detection pipe automatic fire extinguishing control valve

Technical Field

The utility model relates to a fire extinguishing equipment technical field, concretely relates to fire detection pipe automatic fire extinguishing control valve.

Background

Fire frequently causes great property and personnel loss in daily production and life of people, and people often adopt fire-fighting equipment such as smoke sensors and temperature sensors to perform early prevention in the prior art, but on one hand, the equipment only can play a role of early warning and prompt, and can not automatically start corresponding fire-fighting equipment to quickly extinguish a fire in the early stage of fire occurrence, so that the optimal fire extinguishing period is missed, on the other hand, the equipment needs a large number of leads for connection and needs to be powered on, so that the use cost of the equipment is improved, and the monitoring efficiency is extremely low; and is less applicable to some occasions where the space is narrow, such as a vehicle engine installation room.

The utility model discloses a chinese utility model discloses a public number is CN204170335U specially does benefit to 2015 year 2 month 25 and discloses a fire detection pipe automatic fire extinguishing device container valve, including valve body, trigger mechanism and distribution mechanism, open at the valve body middle part has the air flue, and trigger mechanism installs on the top of valve body, and the last gas release hole that is provided with of trigger mechanism, and the valve body middle part is equipped with the branch interface, is equipped with a gas flue in the branch interface, and distribution mechanism installs on the branch interface, is provided with the distributor head on the distribution mechanism, and the gas release hole on distributor head and the trigger mechanism passes through fire detection union coupling. The utility model provides a fire probe pipe automatic fire extinguishing device container valve utilizes the fire probe pipe to the destruction of container valve internal gas pressure when being heated and splitting open, can survey and put out the burning things which may cause a fire disaster fast, accurately effectively and put out in the bud state, effectively reduces the economic loss that the conflagration brought. The utility model discloses simple structure, small in size does not receive any installation space's influence, but among the various narrowness and complicated inflammable space or the equipment of protractile, still has advantage with low costs, that the fire extinguishing efficiency is high simultaneously.

Disclosure of Invention

The inefficiency to exist among the prior art, can not realize the defect of automatic fire extinguishing, the utility model discloses a fire detection pipe automatic fire extinguishing control valve adopts the utility model discloses can realize quick, automatic fire extinguishing in narrow and small airtight space such as engine installation room to the loss that causes the conflagration falls to minimumly, has improved the security of production life greatly.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the utility model provides a fire detection pipe automatic fire extinguishing control valve, includes the valve body, be provided with the shoulder hole on the valve body, the shoulder hole is separated for air vent and plenum by the piston that sets up in it that slides, its characterized in that: the piston is provided with a capillary tube communicated with the air passage and the air pressure chamber; the valve body is also provided with an air inlet and outlet passage communicated with the stepped hole, and the piston controls the on-off state between the air inlet and outlet passage and the air passage; a return spring is arranged between the stepped hole and the piston; the fire detector is characterized in that a pressure relief stepped hole communicated with the air pressure chamber is further formed in the valve body, a fire detector connecting seat is arranged in the large end of the pressure relief stepped hole in a sliding mode, an air flow channel and a plug are arranged on the fire detector connecting seat, the plug is used for controlling the on-off state between the air flow channel and the small end of the pressure relief stepped hole, and an adjusting nut used for controlling the stroke of the fire detector connecting seat is connected to the connecting seat through a screw thread.

The top of the valve body is also connected with a mounting seat in a threaded manner, an upper air duct and a lower air duct which are communicated with each other are arranged on the mounting seat, an end cover is arranged at one end of the upper air duct, and one end of the lower air duct is sealed by a blocking diaphragm; the lower air channel is internally provided with an adjusting rod in a sliding mode, the adjusting rod is provided with a puncture needle used for puncturing the blocking membrane, the adjusting rod is provided with an air vent, and the other end of the adjusting rod extends out through the end cover.

Go up the internal diameter of air duct and be greater than air duct internal diameter down, be provided with stopper and reset spring on the regulation pole, reset spring's both ends are supported respectively and are leaned on in stopper and last air duct bottom surface, and the air vent is the T type, and the entrance point of air vent is located air duct down, and the exit end is located air duct.

The adjusting rod is further provided with a limiting hole, a bolt is arranged in the limiting hole, and one end of the bolt is provided with a lead seal.

The included angle between the step surface of the stepped hole and the air inlet and outlet passage is 30-90 degrees, an annular air passage is further arranged on the step surface of the stepped hole, and the annular air passage is communicated with the air inlet and outlet passage.

The outer circumferences of the piston and the fire detection pipe connecting seat are respectively provided with a sealing ring, and the inner wall of the airflow channel is provided with a sealing ring; and the bottom of the piston is also provided with a sealing gasket.

The cross section of the airflow channel is T-shaped, L-shaped, Y-shaped or arc-shaped.

The cross section of the plug is arc-shaped or conical.

The inner diameter of the capillary tube is 0.5-1.5 mm.

The valve body is also provided with a safe pressure relief port and a pressure gauge which are communicated with the airflow channel.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model comprises a valve body, a piston is arranged on the valve body, a capillary tube which is communicated with an air pressure chamber and an air passage is arranged on the piston, a pressure relief stepped hole and an air inlet and outlet are also arranged on the valve body, wherein the air inlet and outlet are crossed with the step of the stepped hole at an angle, a fire-detecting tube connecting seat is arranged on the pressure relief stepped hole in a sliding way, when the fire-detecting tube is broken due to fire, the left side of the fire-detecting tube connecting seat is rapidly decompressed, high-pressure gas in the air pressure chamber pushes the fire-detecting tube connecting seat to slide, and because the inner diameter of the capillary tube is very small, the gas replenishing speed in the air pressure chamber is far less than the overflowing speed, thereby causing the decompression of the air pressure chamber, further causing the piston to slide under the high pressure effect in a fire extinguishing tank, finally communicating the air passage and the air passage, and the fire extinguishing gas is finally sprayed, simultaneously because the fire detection pipe can not recover after breaking, consequently its decompression is permanent, has consequently guaranteed the blowout that the gas of putting out a fire can last, the utility model discloses can just put out a fire fast to the burning things which may cause a fire disaster initial stage, do not rely on electronic component to realize the automatic fire extinguishing operation simultaneously, the reliability is higher under the condition of the conflagration that takes place, greatly reduced the loss of conflagration, be particularly suitable for narrow and small, enclosure space's that personnel can not get into on a large scale fire extinguishing, fire prevention operation, improved the security of production, life.

2. The utility model discloses a valve body upper portion still is provided with the mount pad, is provided with air duct and lower air duct on the mount pad, and is provided with down in the air duct and adjusts the pole and block the diaphragm, guarantees under the condition that automatic regulating apparatus became invalid, drives the pricking and breaks the diaphragm through pressing down the regulation pole fast to realize the quick decompression of barochamber, and then realize the operation of putting out a fire, realized the manual operation function of this device, improved the reliability of equipment greatly.

3. The utility model discloses an go up the air vent internal diameter and be greater than air vent down, and be provided with stopper and reset spring on the regulation pole, enlarge the internal diameter of air vent on the one hand and enlarge gaseous overflow space, realize the quick decompression of atmospheric pressure room, improve equipment's response speed and reliability, on the other hand realizes adjusting the reseing of pole through reset spring, avoids pricking the needle under the normal conditions to disclose broken diaphragm, improve equipment's reliability.

4. The utility model discloses a still be provided with bolt and lead sealing on adjusting the pole, carry on spacingly to the adjusting lever, avoid personnel to press down the regulation pole by accident, lead to blocking the diaphragm and disclose brokenly to guarantee the reliability and the stability of equipment.

5. The included angle between the air inlet and outlet channels and the step surface of the utility model is 30-90 degrees, and the step surface is provided with the annular air channel communicated with the air inlet and outlet channels, on one hand, the stroke between the air channel and the air inlet and outlet channels is shortened, the through channel and the air inlet and outlet channels are ensured to be communicated at the moment when the piston moves, the quick release of the fire extinguishing gas is ensured, and the fire extinguishing efficiency is improved; on the other hand, the piston can be quickly ejected when the fire extinguisher is refilled into the fire extinguishing pipe through the annular air passage, so that the fire extinguishing pipe can be quickly refilled, the equipment can be quickly reused, and the service life of the equipment is prolonged.

6. The utility model discloses an airflow channel cross-section is T type, L type, Y type or arc, avoids can effectively being kept apart between gas port passageway and the barochamber, guarantees the pressure stability in the barochamber, and then guarantees the reliability and the stability of equipment.

7. The utility model discloses an end cap cross section is arc or toper, area of contact between increase end cap and the pressure release shoulder hole terminal surface to ensure the pressure stability in the air pressure chamber, and then guarantee the reliability and the stability of equipment.

8. The capillary inner diameter of the utility model is 0.5-1.5mm, and the stable pressure difference is formed between the air pressure chamber and the air duct, so that the piston can be smoothly opened, the automatic fire extinguishing is realized, and the reliability and the stability of the equipment are improved.

9. The utility model discloses a still be provided with safe pressure release mouth and manometer on the valve body, guarantee on the one hand to realize quick, safe step-down under the too high condition of pressure, guarantee the security of equipment, on the other hand passes through manometer real-time supervision tank internal pressure, and the pressure is too high when avoiding filling into fire extinguishing gas, guarantees the security that equipment used.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of the present invention;

reference numerals: 1. the gas pressure relief valve comprises a valve body, 2, a piston, 3, an air passage, 4, a gas pressure chamber, 5, a capillary tube, 6, an air inlet and outlet passage, 7, a reset spring, 8, a pressure relief stepped hole, 9, a fire detector pipe connecting seat, 10, an air flow passage, 11, a plug, 12, an adjusting nut, 13, a mounting seat, 14, an upper air passage, 15, a lower air passage, 16, an end cover, 17, a blocking diaphragm, 18, an adjusting rod, 19, a pricking pin, 20, an air hole, 21, a limiting block, 22, a limiting hole, 23, a plug pin, 24, a lead seal, 25, an annular air passage, 26, a sealing ring, 27, a sealing gasket, 28, a safety pressure relief opening, 29 and a.

Detailed Description

The invention will be further illustrated by the following specific examples:

example 1

The present embodiment is taken as a preferred embodiment of the present invention, and discloses an automatic fire extinguishing control valve for a fire detection pipe, the specific structure is shown in fig. 1, and the automatic fire extinguishing control valve comprises a valve body 1, a stepped hole is vertically arranged on the valve body 1, wherein a piston 2 is slidably connected in the large end of the stepped hole through a sliding pair, the stepped hole is divided into an air pressure chamber 4 positioned on the upper part of the piston 2 and an air duct 3 positioned on the lower part of the piston 2 by the piston, a capillary 5 communicating the air pressure chamber 4 and the air duct 3 is arranged on the piston 2, and the inner diameter of the capillary 5 is 0.5 mm; the upper part of the valve body 1 is provided with a pressure relief stepped hole 8 communicated with the air pressure chamber 4, the small end of the pressure relief stepped hole 8 is communicated with the air pressure chamber 4, the large end of the pressure relief stepped hole extends out of the valve body 1 to form a hollow connector, a fire detection pipe connecting seat 9 is connected in the connector in a sliding mode through a sliding pair, a certain length of movable allowance is reserved for the fire detection pipe connecting seat 9 in the connector, the outer circumference of the hydraulic stepped hole 8 is connected with an adjusting nut 12 in a threaded manner, one end of the fire detection pipe connecting seat 9 extends out of the valve body 1 through the adjusting nut 12, and a boss abutted against the adjusting nut 12 is arranged on the fire detection pipe connecting seat 9; when the adjusting nut 12 is adjusted to the lowest position, the adjusting nut 12 blocks the fire detector tube connecting seat 9, and when the adjusting nut 12 is loosened, the fire detector tube connecting seat 9 can slide left and right; the other end of the fire probe pipe connecting seat 9 is provided with a plug 11, an airflow channel 10 is arranged on the fire probe pipe connecting seat 9, one end of the airflow channel 10 is communicated with the outside, and the other end of the airflow channel is controlled to be in an on-off state with the small end of the pressure relief stepped hole 8 through the plug 11.

Example 2

In this embodiment, as another preferred embodiment of the present invention, the top of the valve body 1 is screwed to connect with the mounting seat 13, the mounting seat 13 is provided with an upper air duct 14 and a lower air duct 15 which are communicated with each other, and the inner diameter of the upper air duct 14 is larger than that of the lower air duct 15, wherein one end of the upper air duct 14 is provided with an end cover 16, and one end of the lower air duct 15 is provided with a blocking diaphragm 17, so as to isolate the air pressure chamber 4 from the outside; an adjusting rod 18 is arranged in the lower air passage 15 in a sliding mode, one end of the adjusting rod 18 penetrates through an end cover 16 and extends out of the valve body 1, a puncture needle 19 for breaking a blocking membrane 17 is arranged at the other end of the adjusting rod 18, a T-shaped vent hole 20 is formed in the adjusting rod 18, the inlet end of the vent hole 20 is located in the lower air passage 15, and the outlet end of the vent hole 20 is located in the upper air passage 14; the upper air duct 14 is also internally provided with a return spring 7 sleeved on the adjusting rod 18, the adjusting rod 18 is also provided with a limiting block 21, and two ends of the return spring 7 are respectively abutted against the bottom surface of the limiting block 21 and the bottom surface of the upper air duct 14; the adjusting rod 18 is also provided with a limiting hole 22, a bolt 23 is arranged in the limiting hole 22, and a lead seal 24 for limiting the movement of the bolt 23 is also arranged on the bolt 23;

the cross section of the plug 11 is arc-shaped or conical, the cross section of the airflow channel 10 is any one of T-shaped, L-shaped, Y-shaped or arc-shaped, one end of the airflow channel is used for being communicated with a fire detection pipe, and the other end of the airflow channel is located on the side face of the fire detection pipe connecting seat 9, so that the connection between the airflow channel and the air pressure chamber 4 can be stably blocked through the plug 11; sealing rings 26 are arranged on the outer surfaces of the fire probe pipe connecting seat 9 and the piston 2, and the sealing rings 26 for fixing the fire probe pipe are arranged in the airflow channel 10 on the fire probe pipe connecting seat 9;

the end surface of the inlet end of the air inlet and outlet passage 6 is intersected with the step surface of the stepped hole at an angle of 30 degrees, the step surface is provided with an annular air passage 25, the annular air passage 25 is communicated with the air inlet and outlet passage 6, and the bottom surface of the piston 2 is provided with a sealing gasket 27 for isolating the air passage 3 from the air inlet and outlet passage 6; the valve body 1 is further provided with a safety pressure relief port 28 and a pressure gauge 29, and the safety pressure relief port 28 and the pressure gauge 29 are both communicated with the air duct 3.

Example 3

This embodiment is another preferred embodiment of the present invention, the inner diameter of the capillary 5 is 1.5mm, and the end surface of the inlet end of the air inlet/outlet passage 6 intersects with the step surface of the stepped hole at 90 °.

When the fire extinguishing valve is used, the valve body is arranged on a fire extinguishing tank, the air inlet and the air outlet are connected with fire extinguishing pipes, nozzles are arranged on the fire extinguishing pipes, and the fire extinguishing pipes are arranged at places needing fire prevention; one end of the fire probe pipe connecting seat is connected with the fire probe pipe, the fire probe pipe is arranged in a place needing fire prevention, if fire extinguishing gas needs to be filled into the fire extinguishing tank, the adjusting nut is rotated to clamp the fire probe pipe connecting seat, then the fire extinguishing gas is filled into the fire extinguishing tank through the air inlet and outlet, due to the existence of the capillary, when the air inflation is finished, pressure balance is formed between the air pressure chamber and the air channel, and the piston seals the connection between the air inlet and outlet and the air channel; at the moment, the adjusting nut needs to be loosened to ensure that the connection seat of the fire detecting pipe has certain movement allowance, at the moment, high-pressure gas in the air pressure chamber is filled into the fire detecting pipe, and fire extinguishing gas is supplemented into the air pressure chamber through the capillary until new pressure balance is formed.

When a fire disaster occurs, the fire detection pipe is broken due to high temperature, at the moment, gas in the fire carbon pipe quickly overflows, the pressure is reduced, so that pressure difference is formed between the air pressure chamber and the fire detection pipe, the fire detection pipe connecting seat slides, and quick decompression of the air pressure chamber is caused; meanwhile, because the rupture of the fire detection pipe can not be recovered, the decompression of the air pressure chamber is permanent, so that the pressure difference between the air pressure chamber and the air duct is relatively stable, the fire extinguishing gas can be continuously and stably discharged for fire extinguishing, and the fire extinguishing effect is improved; the utility model has the advantages of stability, reliability, high automation degree and the like; simultaneously the utility model discloses be particularly suitable for the quick fire extinguishing operation in narrow and small space, and can put out a fire in the early stage that the conflagration took place, avoided the condition of a fire to stretch, greatly reduced the loss that the conflagration caused, improved the security of production with the life.

Claims

1. The utility model provides a fire detection pipe automatic fire extinguishing control valve, includes valve body (1), be provided with the shoulder hole on valve body (1), the shoulder hole is separated for air vent (3) and plenum chamber (4) by piston (2) that the slip set up in it, its characterized in that: a capillary tube (5) communicated with the air passage (3) and the air pressure chamber (4) is arranged on the piston (2); the valve body (1) is also provided with an air inlet and outlet passage (6) communicated with the stepped hole, and the piston (2) controls the on-off state between the air inlet and outlet passage (6) and the air passage (3); a return spring (7) is arranged between the stepped hole and the piston (2); still be provided with pressure release shoulder hole (8) with pneumatic chamber (4) intercommunication on valve body (1), it is provided with fire detection pipe connecting seat (9) to slide in the major part end of pressure release shoulder hole (8), be provided with airflow channel (10) and end cap (11) on fire detection pipe connecting seat (9), break-make state between the microcephaly end that end cap (11) are used for controlling airflow channel (10) and pressure release shoulder hole (8), it is connected with adjusting nut (12) that are used for controlling fire detection pipe connecting seat (9) stroke to go back the screw thread on fire detection pipe connecting seat (9).

2. The automatic fire extinguishing control valve for the fire detection pipe as recited in claim 1, wherein: the top of the valve body (1) is also connected with a mounting seat (13) in a threaded manner, an upper air passage (14) and a lower air passage (15) which are communicated with each other are arranged on the mounting seat (13), an end cover (16) is arranged at one end of the upper air passage (14), and one end of the lower air passage (15) is sealed through a blocking diaphragm (17); an adjusting rod (18) is arranged in the lower air passage (15) in a sliding mode, a puncture needle (19) used for puncturing the blocking membrane (17) is arranged on the adjusting rod (18), an air vent (20) is formed in the end adjusting rod (18), and the other end of the adjusting rod (18) extends out through an end cover (16).

3. The automatic fire extinguishing control valve for the fire detection pipe as claimed in claim 2, wherein: the inner diameter of the upper air passage (14) is larger than that of the lower air passage (15), the adjusting rod (18) is provided with a limiting block (21) and a return spring (7), two ends of the return spring (7) are respectively abutted against the bottom surfaces of the limiting block (21) and the upper air passage (14), the vent hole (20) is T-shaped, the inlet end of the vent hole (20) is positioned in the lower air passage (15), and the outlet end of the vent hole is positioned in the upper air passage (14).

4. A fire probe automatic fire extinguishing control valve according to any one of claims 2 or 3, wherein: the adjusting rod (18) is further provided with a limiting hole (22), a bolt (23) is arranged in the limiting hole (22), and a lead seal (24) is arranged at one end of the bolt (23).

5. The automatic fire extinguishing control valve for the fire detection pipe as recited in claim 1, wherein: an included angle between the step surface of the stepped hole and the air inlet and outlet passage (6) is 30-90 degrees, an annular air passage (25) is further arranged on the step surface of the stepped hole, and the annular air passage (25) is communicated with the air inlet and outlet passage (6).

6. The automatic fire extinguishing control valve for the fire detection pipe as recited in claim 1, wherein: sealing rings (26) are arranged on the outer circumferences of the piston (2) and the fire detection pipe connecting seat (9), and the inner wall of the airflow channel (10) is provided with the sealing rings (26); and a sealing gasket (27) is also arranged at the bottom of the piston (2).

7. The automatic fire extinguishing control valve for the fire detection pipe as recited in claim 1, wherein: the cross section of the airflow channel (10) is T-shaped, L-shaped, Y-shaped or arc-shaped.

8. The automatic fire extinguishing control valve for the fire detection pipe as recited in claim 1, wherein: the cross section of the plug (11) is arc-shaped or conical.

9. The automatic fire extinguishing control valve for the fire detection pipe as recited in claim 1, wherein: the inner diameter of the capillary (5) is 0.5-1.5 mm.

10. The automatic fire extinguishing control valve for the fire detection pipe as recited in claim 1, wherein: the valve body (1) is also provided with a safety pressure relief port (28) and a pressure gauge (29) which are communicated with the airflow channel (10).