CN117180668A

CN117180668A - Kitchen fire extinguishing device nitrogen cylinder head valve with safety release function

Info

Publication number: CN117180668A
Application number: CN202311269164.XA
Authority: CN
Inventors: 丁爱国; 王勇平; 辛勇; 杨斌
Original assignee: Yichun Furui Gas Co ltd
Current assignee: Yichun Furui Gas Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2023-12-08

Abstract

The invention relates to the technical field of fire extinguishers and discloses a nitrogen cylinder head valve of a kitchen fire extinguishing device with a safety release function, which comprises a nitrogen cylinder, a pressure gauge, a valve head, a valve body arranged in the middle of the valve head, a pressure regulating knob arranged at the upper part of the valve body, pressure measuring assemblies and a safety release pipe arranged at two sides of the middle part of the valve body, a base connected with the lower part of the valve body, a ventilation bin arranged inside the base, and a starting air pipe arranged at the side surface.

Description

Kitchen fire extinguishing device nitrogen cylinder head valve with safety release function

Technical Field

The invention relates to the technical field of fire extinguishers, in particular to a nitrogen cylinder head valve of a kitchen fire extinguishing device with a safety release function.

Background

At present, the fire prevention safety becomes a very important problem for people, the fire extinguisher is also widely applied, nitrogen (N2) is also called IG100, and nitrogen accounting for 78% of the atmosphere is used as a fire extinguishing agent, so that the design concept of a fire extinguishing system in the new era is fully integrated, and the product has the functions of protecting the environment and extinguishing fire efficiently. It has the characteristics of protecting the ecological environment of the earth, being safe and sanitary, having no pollution of fire extinguishing agent, lasting fire extinguishing effect and the like. The nitrogen can be separated from the air, the source is wide, and the filling cost is low. The nitrogen fire extinguishing system adopts a total flooding diffuse-in fire extinguishing principle, and the fire extinguishing principle is a physical fire extinguishing principle. When extinguishing fire, the oxygen is sprayed into a protection area of a dense group, so that the indoor oxygen concentration is reduced to below 15%, and the combustion cannot be supported. The nitrogen does not react chemically with any of the materials in the protected zone. After spraying, it returns to the atmosphere without residue.

Compared with the traditional 15MPa system, the nitrogen fire extinguishing agent saves 25% -50% of fire extinguishing agent bottles. The construction area between the steel cylinders is effectively reduced, and the overall use value and the utilization rate of the building are improved. The constant low pressure release of 6MPa reduces the pipe network piping and component cost of the whole system. The constant 6MPa releases pressure, provides more durable and effective pressure, and the transmission distance can reach 200 meters. The whole system is released under low pressure, so that the influence on field personnel, equipment and building structures is small and safer. The external constant pressure reducer can only bear the pressure of the system during injection, is convenient to detach and maintain, and effectively reduces the failure rate of the system. After the system is sprayed, the system can be quickly put into operation, any part is not required to be replaced, and the system is simply disassembled and refilled. The opening area of the gas pressure relief opening is reduced, the input cost of the safety pressure relief device is directly reduced, and the safety buckle is more simply installed. The nitrogen fire extinguishing system can be widely applied to important places needing to quickly respond to fire, including workers in a protection area, places with sudden fire and places sensitive to chemical reaction, and can effectively protect the safety of the workers and property.

However, the problem of excessive pressure in the fire extinguisher bottle cannot be solved by the fire extinguisher bottle head valve in the prior art. If the high-pressure gas bottle is baked at high temperature all the time under the high-temperature environment of a kitchen, the internal gas pressure can be increased along with the temperature rise, and when a certain critical value is reached, the explosion of the bottle body is likely to be caused due to the overhigh pressure, so that the safety accident is easily caused, and the casualties and the property loss are caused. Therefore, the invention has a great need to invent a kitchen fire extinguishing device nitrogen cylinder head valve with a safety release function to release pressure of a nitrogen cylinder so as to ensure safety.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a nitrogen cylinder head valve of a kitchen fire extinguishing device with a safety release function.

In order to achieve the aim of ensuring safety in pressure relief of the nitrogen cylinder, the invention provides the following technical scheme: the utility model provides a take kitchen extinguishing device nitrogen bottle head valve of safety release function, includes nitrogen bottle, manometer, the valve head is installed to nitrogen bottle upper portion, the valve head side intercommunication manometer, there is the valve body in the middle of the valve head, valve body upper portion is equipped with the pressure regulating knob, valve body middle part both sides are equipped with pressure measurement subassembly and safety release pipe, the base is connected to the valve body lower part, the inside storehouse that ventilates of seting up of base, the side is equipped with the start-up trachea;

the pressure regulating knob is internally provided with a cross-shaped valve rod groove, and the outer part of the pressure regulating knob is provided with insections which are convenient to rotate.

Preferably, the valve rod is arranged at the central axis of the valve body, the upper end of the valve rod is positioned in a valve rod groove of the pressure regulating knob, a gasket is arranged at the upper end of the valve body, a spring is arranged in the middle of the valve rod, a pressure regulating plate is arranged at the upper end of the spring, an opening is arranged at the center of the pressure regulating plate, the surface of the opening is threaded, the lower end of the spring is fixedly connected with a retaining plate, the lower end of the retaining plate is fixedly connected with a partition plate, a leakage bin is arranged below the partition plate, an annular connecting rod trigger groove is arranged below the partition plate, the lower end of the valve rod is positioned in the connecting rod trigger groove and is connected with a trigger piece, an annular connecting rod is arranged below the trigger piece, a valve clack piece is fixedly connected with the lower surface of the connecting rod, the lower surface of the valve clack piece is in contact with a vent pipe, and the side surface of the vent pipe is communicated with a pressure measuring assembly.

Preferably, the upper end of the valve rod is positioned in the valve rod groove in a cross shape, the upper and lower surfaces of the part connected with the pressure regulating plate are provided with threads, and the rest parts are smooth round rods.

Preferably, when the pressure regulating knob is rotated, the valve rod rotates along with the pressure regulating knob, the surface thread part of the pressure regulating knob drives the pressure regulating plate to move up and down, but the valve rod only rotates and cannot move up and down.

Preferably, the pressure measuring assembly comprises a pressure measuring knob, the right end of the pressure measuring knob is connected with a pressure meter switch valve core, the right end of the pressure meter switch valve core is connected with an adjusting rod, the right end of the adjusting rod is connected with a pressure meter valve core sealing piece, the right end of the pressure meter valve core sealing piece is connected with a pressure measuring pipeline, and the pressure measuring pipeline is communicated with the side face of the vent pipe.

Preferably, the pressure measuring knob drives the pressure gauge switch valve core and the adjusting rod to enable the pressure gauge switch valve core sealing member to move, nitrogen flows out from the nitrogen bottle under the pressure effect through the vent pipe and the pressure measuring pipeline, so that the pressure gauge senses the pressure of the nitrogen, the pointer of the pressure gauge shifts, and the air pressure is displayed.

Preferably, the left side of the safety vent is communicated with the vent bin, the right side of the safety vent is provided with a movable cover plate, the movable cover plate is connected with the movable cover plate through a hinge, the pipe orifice of the safety vent is closed by the movable cover plate under the action of gravity, when gas enters the safety vent from the vent bin, the movable cover plate is pushed, the opening angle of the movable cover plate is opened under the connection of the hinge to release gas, and when the movable cover plate is pushed by no gas, the movable cover plate is reset under the action of gravity.

Preferably, the left side of the starting air pipe is communicated with the ventilation bin, the brass pressing sleeve and the puncture membrane are sequentially arranged at the joint from left to right, the red copper pressing sleeve is a circular ring with a hole in the middle, and the brass pressing sleeve and the red copper pressing sleeve are respectively provided with a hole in the middle.

Preferably, when the pressure in the nitrogen cylinder is increased to exceed the set pressure set by the pressure regulating knob for the spring, nitrogen pushes the valve clack plate to drive the connecting rod device and the trigger plate to move upwards in the movable groove of the connecting rod device through the vent pipe, drives the valve rod to move upwards, drives the pressure regulating plate to move upwards, and enables the nitrogen to enter the air leakage bin from the vent pipe and push the movable cover plate to be opened and discharged through the safety air leakage pipe.

Compared with the prior art, the nitrogen cylinder head valve of the kitchen fire extinguishing device with the safety release function has the following beneficial effects:

1. this take kitchen extinguishing device nitrogen cylinder head valve of safety release function through setting up pressure measurement subassembly and can accurately survey the bottle internal pressure value at any time, improves detectability, reinforcing security.

2. This take kitchen extinguishing device nitrogen cylinder head valve of safety release function through setting up the pressure regulating knob, can correspond different situation and adjust the setting pressure, improves the controllability of releasing.

3. This take kitchen extinguishing device nitrogen cylinder head valve of safety release function makes the gas release repeatedly many times through setting up spring and valve clack piece, has practiced thrift the resource, has improved resource utilization.

4. This take kitchen extinguishing device nitrogen cylinder head valve of safety release function makes kitchen environment and valve body inside isolated through setting up movable cover plate, does not carry out the material exchange when not releasing, prevents that valve body inner structure from ageing, extension equipment life.

Drawings

FIG. 1 is a schematic diagram of the connection structure of a nitrogen cylinder according to the present invention;

FIG. 2 is a schematic view of a valve head of the present invention;

FIG. 3 is a schematic view of the valve head structure of the present invention;

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

FIG. 5 is an enlarged view of part b of FIG. 3;

fig. 6 is an enlarged view of part c of fig. 3.

In the figure: 10. a nitrogen cylinder; 20. a pressure gauge; 30. a valve head; 31. a base; 32. a linkage; 33. a gas leakage bin; 34. a valve flap; 35. a vent pipe; 36. a ventilation bin; 40. a valve body; 41. a pressure regulating knob; 411. a valve stem groove; 42. a valve stem; 43. a gasket; 44. a pressure regulating plate; 45. a spring; 46. a retaining plate; 47. a partition plate; 48. a link trigger slot; 49. a trigger piece; 50. a pressure measurement assembly; 51. a pressure measuring knob; 52. a pressure gauge switch valve core; 53. an adjusting rod; 54. a pressure gauge spool seal; 55. a pressure measuring pipe; 60. a removable cover; 61. a safe air release pipe; 62. a hinge; 70. starting an air pipe; 71. brass press sleeve; 72. puncturing the membrane; 73. and (5) pressing the red copper sleeve.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-6, a nitrogen cylinder head valve with a safety release function for a kitchen fire extinguishing device comprises a nitrogen cylinder 10, a pressure gauge 20 and a valve head 30, wherein the valve head 30 is arranged at the upper part of the nitrogen cylinder 10, the side surface of the valve head 30 is communicated with the pressure gauge 20, a valve body 40 is arranged in the middle of the valve head 30, a pressure regulating knob 41 is arranged at the upper part of the valve body 40, pressure measuring assemblies 50 and safety release pipes 61 are arranged at the two sides of the middle part of the valve body 40, the lower part of the valve body 40 is connected with a base 31, a ventilation bin 36 is arranged in the base 31, and a starting air pipe 70 is arranged at the side surface;

the pressure regulating knob 41 is internally provided with a cross-shaped valve rod slot 411, and the outer part of the pressure regulating knob is provided with insections for facilitating rotation.

The valve body 40 is internally provided with a valve rod 42 at the central axis, the upper end of the valve rod 42 is positioned in a valve rod slot 411 of the pressure regulating knob 41, the upper end of the valve body 40 is provided with a gasket 43, the middle is provided with a spring 45, the upper end of the spring 45 is provided with a pressure regulating plate 44, the center of the pressure regulating plate 44 is provided with an opening, the surface of the opening is provided with threads, the lower end of the spring 45 is fixedly connected with a retaining plate 46, the lower end of the retaining plate 46 is fixedly connected with a baffle plate 47, the lower part of the baffle plate 47 is provided with a gas leakage bin 33, an annular connecting rod trigger slot 48 is arranged below the baffle plate 47, the lower end of the valve rod 42 is positioned in the connecting rod trigger slot 48 and is connected with a trigger piece 49, the lower part of the trigger piece 49 is provided with an annular connecting rod 32, the lower part of the connecting rod 32 is fixedly connected with a valve clack 34, the lower surface of the valve clack 34 is contacted with a breather pipe 35, and the side surface of the breather pipe 35 is communicated with a pressure measuring assembly 50. The upper end of the valve rod 42 is positioned in the valve rod slot 411 in a cross shape, the upper and lower surfaces of the part connected with the pressure regulating plate 44 are threaded, and the rest parts are smooth round rods.

The upper end of the valve rod 42 is positioned in the valve rod slot 411 in a cross shape, the upper and lower surfaces of the part connected with the pressure regulating plate 44 are threaded, and the rest parts are smooth round rods.

When the pressure regulating knob 41 is turned, the valve rod 42 is turned, and the surface thread part of the valve rod drives the pressure regulating plate 44 to move up and down, but the valve rod 42 is only turned and does not move up and down.

The pressure measuring assembly 50 comprises a pressure measuring knob 41, the right end of the pressure measuring knob 41 is connected with a pressure meter switch valve core 52, the right end of the pressure meter switch valve core 52 is connected with an adjusting rod 53, the right end of the adjusting rod 53 is connected with a pressure meter valve core sealing piece 54, the right end of the pressure meter valve core sealing piece 54 is connected with a pressure measuring pipeline 55, and the pressure measuring pipeline 55 is communicated with the side face of the ventilation pipe 35.

When the pressure measuring knob 52 rotates, the pressure meter switch valve core 52 and the adjusting rod 53 are driven to enable the pressure meter switch valve core sealing piece 54 to move, nitrogen flows out from the nitrogen bottle 10 through the vent pipe 35 and the pressure measuring pipeline 55 under the pressure effect, the pressure meter 20 senses the pressure of the nitrogen, and the pointer of the pressure meter shifts to display the air pressure.

The left side of the safety air release pipe 61 is communicated with the air release bin 33, the right side of the safety air release pipe 61 is provided with a movable cover plate 60, the movable cover plate 60 is connected with the movable cover plate by a hinge 62, the pipe orifice of the safety air release pipe 61 is closed by the movable cover plate 60 under the action of gravity, when air enters the safety air release pipe 61 from the air release bin 33, the movable cover plate 60 is pushed to release air by the opening angle of the movable cover plate 60 under the connection of the hinge 62, and when the movable cover plate 60 is not pushed by the air, the movable cover plate 60 is reset under the action of gravity.

The left side of the starting air pipe 70 is communicated with the ventilation bin 36, the brass pressing sleeve 71, the puncture membrane 72 and the red copper pressing sleeve 73 are sequentially arranged at the connecting part from left to right, and the brass pressing sleeve 71 and the red copper pressing sleeve 73 are circular rings with holes in the middle.

When the pressure in the nitrogen cylinder 10 is increased to exceed the set pressure set by the pressure regulating knob 41 for the spring 45, nitrogen pushes the valve clack plate 34 to drive the connecting rod device 32 and the trigger plate 49 to move upwards in the connecting rod device movable groove 48 through the vent pipe 35, drives the valve rod 42 to move upwards, drives the pressure regulating plate 44 to move upwards, and drives the movable cover plate 60 to open and discharge through the safety vent pipe 61 when the nitrogen enters the vent pipe 35 into the vent chamber 33, and continues until the pressure in the nitrogen cylinder 10 is smaller than the set pressure set by the spring 45, the spring 45 contracts to drive the pressure regulating plate 44 to move downwards, so that the valve rod 42 moves downwards, drives the trigger plate 49 and the connecting rod device 32 to move downwards, so that the upper end of the vent pipe 35 is closed, and the nitrogen stops bleeding.

In use, this is divided into four aspects.

When the pressure in the nitrogen cylinder 10 needs to be detected, the pressure measuring knob 52 is rotated to drive the pressure gauge switch valve core 52 and the adjusting rod 53 to enable the pressure gauge switch valve core sealing piece 54 to move, nitrogen flows out from the nitrogen cylinder 10 through the vent pipe 35 and the pressure measuring pipeline 55 under the action of pressure, the pressure gauge 20 senses the pressure of the nitrogen, and accordingly the pointer is rocked to display the pressure.

The pressure is regulated, by rotating the pressure regulating knob 41, the valve rod slot 411 inside is meshed with the upper part of the valve rod 42 to drive the valve rod 42 to rotate, and the threads on the valve rod 42 drive the pressure regulating plate 44 to move up and down, so that the spring 45 is contracted and the downward pulling force of the valve rod 42 is changed, and the safety pressure, namely the setting pressure, is regulated.

During normal use, the puncture membrane 72 needs to be punctured, and nitrogen in the nitrogen bottle 10 flows out from the nitrogen bottle 10 through the ventilation bin 36 and the starting air pipe under the action of pressure, so that normal use is realized.

Safety release is carried out, when the kitchen environment temperature is too high, the volume expansion of nitrogen in the nitrogen cylinder 10 causes the air pressure in the cylinder to be increased, when the set setting pressure is exceeded, nitrogen pushes the valve clack plate 34 to drive the connecting rod device 32 and the trigger plate 49 to move upwards in the connecting rod device movable groove 48 through the vent pipe 35, the valve rod 42 is driven to move upwards, the pressure regulating plate 44 is driven to move upwards by the valve rod 42, the nitrogen enters the air release bin 33 from the vent pipe 35 and pushes the movable cover plate 60 to open and discharge through the safety release pipe 61, the safety release is completed, when the pressure in the nitrogen cylinder 10 is lower than the set setting pressure set by the spring 45, the spring 45 contracts to drive the pressure regulating plate 44 to move downwards, the valve rod 42 is driven to drive the trigger plate 49 and the connecting rod device 32 to move downwards, the valve clack plate 34 is driven to move downwards, the upper end of the vent pipe 35 is closed, the nitrogen stops releasing, and the movable cover plate 60 closes the safety release pipe under the action of self gravity.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take kitchen extinguishing device nitrogen bottle head valve of safety release function, includes nitrogen bottle (10), manometer (20), valve head (30) are installed on nitrogen bottle (10) upper portion, valve head (30) side intercommunication manometer (20), its characterized in that: a valve body (40) is arranged in the middle of the valve head (30), a pressure regulating knob (41) is arranged at the upper part of the valve body (40), a pressure measuring assembly (50) and a safety air release pipe (61) are arranged at two sides of the middle part of the valve body (40), the lower part of the valve body (40) is connected with a base (31), an air ventilation bin (36) is arranged in the base (31), and an air starting pipe (70) is arranged at the side face of the valve body;

the pressure regulating knob (41) is internally provided with a cross-shaped valve rod groove (411), and the outer part of the pressure regulating knob is provided with insections for facilitating rotation.

2. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 1, wherein: the valve is characterized in that a valve rod (42) is arranged at the inner central axis of the valve body (40), the upper end of the valve rod (42) is positioned in a valve rod groove (411) of the pressure regulating knob (41), a gasket (43) is arranged at the inner upper end of the valve body (40), a spring (45) is arranged in the middle of the valve rod, a pressure regulating plate (44) is arranged at the upper end of the spring (45), an opening is formed in the center of the pressure regulating plate (44), threads are arranged on the surface of the opening, the lower end of the spring (45) is fixedly connected with a retaining plate (46), a partition plate (47) is fixedly connected with the lower end of the retaining plate (46), an annular connecting rod trigger groove (48) is arranged below the partition plate (47), the lower end of the valve rod (42) is positioned in the connecting rod trigger groove (48) and is connected with a trigger piece (49), an annular connecting rod (32) below the trigger piece (49), the lower surface of the valve clack (34) is fixedly connected with the valve clack (35) and is contacted with a vent pipe (35), and the side surface of the vent pipe (35) is communicated with a pressure measuring assembly (50).

3. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 2, characterized in that: the upper end of the valve rod (42) is positioned in the valve rod groove (411) and is in a cross shape, the upper and lower surfaces of the part connected with the pressure regulating plate (44) are provided with threads, and the rest parts are smooth round rods.

4. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 1, wherein: when the pressure regulating knob (41) rotates, the valve rod (42) rotates along with the pressure regulating knob, the surface thread part of the pressure regulating knob drives the pressure regulating plate (44) to move up and down, but the valve rod (42) only rotates and cannot move up and down.

5. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 1, wherein: the pressure measuring assembly (50) comprises a pressure measuring knob (41), the right end of the pressure measuring knob (41) is connected with a pressure meter switch valve core (52), the right end of the pressure meter switch valve core (52) is connected with an adjusting rod (53), the right end of the adjusting rod (53) is connected with a pressure meter valve core sealing piece (54), the right end of the pressure meter valve core sealing piece (54) is connected with a pressure measuring pipeline (55), and the pressure measuring pipeline (55) is communicated with the side face of the vent pipe (35).

6. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 1, wherein: the pressure measuring knob (52) can drive the pressure gauge switch valve core (52) and the adjusting rod (53) to enable the pressure gauge switch valve core sealing piece (54) to move in position when rotating, nitrogen flows out from the nitrogen bottle (10) through the vent pipe (35) and the pressure measuring pipeline (55) under the action of pressure, so that the pressure gauge (20) senses the pressure of the nitrogen, and the pointer of the pressure gauge shifts to display the air pressure.

7. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 1, wherein: the safety vent (61) left side intercommunication is leaked gas storehouse (33), and the right side is equipped with removable cover (60), is equipped with hinge (62) between removable cover (60) and it and is connected, and removable cover (60) can be closed safe vent (61) mouth of pipe department under the action of gravity, and when gas gets into safe vent (61) from gas storehouse (33) and makes then can promote removable cover (60), and removable cover (60) open the angle under the connection of hinge (62) is leaked gas, and when no gas promotes removable cover (60), removable cover (60) reset under the action of gravity again.

8. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 1, wherein: the left side of start-up trachea (70) communicates storehouse (36) of ventilating, and the junction is from left to right brass pressure cover (71) in proper order, pierces diaphragm (72), and copper pressure cover (73), brass pressure cover (71) and copper pressure cover (73) are the ring of centre trompil.

9. The nitrogen cylinder head valve with safety release function for a kitchen fire extinguishing device according to claim 1, wherein: when the pressure in the nitrogen cylinder (10) is increased to exceed the set pressure set by the pressure regulating knob (41) for the spring (45), nitrogen pushes the valve clack plate (34) to drive the connecting rod device (32) and the trigger plate (49) to move upwards in the movable groove (48) of the connecting rod device through the vent pipe (35), the valve rod (42) is driven to move upwards, the pressure regulating plate (44) is driven to move upwards by the valve rod (42), the nitrogen enters the air leakage bin (33) from the vent pipe (35) and pushes the movable cover plate (60) to be opened and discharged through the safety air leakage pipe (61), and when the pressure in the nitrogen cylinder (10) is continuously smaller than the set pressure set by the spring (45), the spring (45) contracts to drive the pressure regulating plate (44) to move downwards, so that the valve rod (42) moves downwards, the trigger plate (49) and the connecting rod device (32) are driven to move downwards, the valve clack plate (34) moves downwards, the upper end of the vent pipe (35) is closed, and the nitrogen stops to be discharged.