CN210716168U - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
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- CN210716168U CN210716168U CN201921114949.9U CN201921114949U CN210716168U CN 210716168 U CN210716168 U CN 210716168U CN 201921114949 U CN201921114949 U CN 201921114949U CN 210716168 U CN210716168 U CN 210716168U
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Abstract
The utility model relates to a pressure reducing valve, which comprises a pressure reducing valve body, a connecting seat, a valve core component, a first spring, a pressure stabilizing piston, a second spring and a pressing ring; the fire extinguishing valve is characterized in that a first air inlet and a second air inlet are formed in the pressure reducing valve body, an air inlet channel is formed in the pressure reducing valve body, the outer side of the lower end of the pressure reducing valve body is suitable for being connected to a fire extinguishing agent container, the connecting seat is fixedly arranged on the inner side of the lower end of the pressure reducing valve body and communicated with the air inlet channel, a plurality of air outlets are formed in the connecting seat in the transverse direction, the valve core assembly is arranged in the connecting seat in a sliding mode and used for opening and closing the air outlets, and the first spring is arranged between the valve core assembly and the connecting. Has the advantages of quick response and full mixing of the fire extinguishing agent and the power gas.
Description
Technical Field
The utility model relates to a valve field, concretely relates to fire extinguishing agent container valve subassembly.
Background
Heptafluoropropane is a clean gas extinguishing agent which mainly has chemical extinguishing effect and physical extinguishing effect; the heptafluoropropane fire extinguishing agent has excellent fire extinguishing performance, does not damage the environment, and is the most ideal fire extinguishing agent at present. The heptafluoropropane gas fire extinguishing system is a fixed type gas fire extinguishing system which takes heptafluoropropane as a fire extinguishing agent and nitrogen as power gas, is sprayed through a nozzle and can be vaporized in a very short time to extinguish fire. The heptafluoropropane gas fire extinguishing system is divided into an internal pressure storage type heptafluoropropane fire extinguishing system and an external pressure storage type heptafluoropropane fire extinguishing system.
The external pressure storage type heptafluoropropane fire extinguishing system stores a heptafluoropropane fire extinguishing agent and power gas in different containers respectively, and when the fire extinguishing agent is sprayed, the power gas is filled into a fire extinguishing agent storage steel cylinder, so that the pressure in the fire extinguishing agent container is rapidly increased, the fire extinguishing agent is pushed to pass through a pipe network system at a high speed, and spraying and fire extinguishing are carried out. The fire extinguishing agent (heptafluoropropane) is stored in a fire extinguishing agent container, the power gas (nitrogen) is stored in a starting gas cylinder, a pressure reducing valve and a container valve are generally arranged on the fire extinguishing agent container, the power gas in the starting gas cylinder enters the fire extinguishing agent container through the pressure reduction of the pressure reducing valve, the container valve is used for controlling the release of the fire extinguishing agent, the container valve generally adopts a gas starting mode, the power gas is input into a gas starter after being reduced in pressure by a special pressure reducing valve, and the gas starter punctures a working membrane of the container valve to ensure that the pressure of one end of a valve core is released and unbalanced.
The pressure reducing valve and the container valve are key parts for quick response and stable transportation of the external pressure storage type fire extinguishing system. In the prior art, pressure reducing valves and container valves with various structures are provided, for example, a utility model with the patent number of CN201420276536.1 discloses a special pressure reducer for an external pressure storage heptafluoropropane fire extinguishing system. However, the pressure reducer has the problems of insufficient response speed and insufficient mixing of the power gas and the vaporized fire extinguishing agent, so that accidents such as air bags and convection can occur in the conveying process, and the normal work of the fire extinguishing system is influenced. In addition, the problems of inconvenient replacement of a working membrane, inconvenient installation and maintenance and the like generally exist in the conventional container valve.
Therefore, it would be desirable to overcome the above-mentioned problems by improving the valve assembly of the prior fire extinguishing agent container.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a fire extinguishing agent container valve component of the external pressure-storing fire extinguishing system which is safe, reliable, fast in response, sufficient in mixing and convenient to install and maintain.
Still another object of the utility model is to provide a pressure reducing valve which can respond quickly and make the fire extinguishing agent and the power gas mix sufficiently.
Yet another object of the present invention is to provide a container valve with an adjustment function and convenient installation and maintenance.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a fire suppressant container valve assembly for an external pressure storage fire suppression system, comprising: the fire extinguishing system comprises a pressure reducing valve and a container valve, wherein the pressure reducing valve is used for reducing pressure of power gas and starting the container valve, and the container valve is used for controlling and releasing a fire extinguishing agent; an air pipe is connected between the pressure reducing valve and the container valve;
the pressure reducing valve comprises a pressure reducing valve body, a connecting seat, a valve core assembly, a first spring, a pressure stabilizing piston, a second spring and a pressing ring; the fire extinguishing valve comprises a pressure reducing valve body, a valve core assembly, a connecting seat, a first spring, a second spring, a valve core assembly and a valve core assembly, wherein the pressure reducing valve body is provided with a first air inlet and a second air inlet, an air inlet channel is arranged in the pressure reducing valve body, the outer side of the lower end of the pressure reducing valve body is suitable for being connected to a fire extinguishing agent container, the connecting seat is fixedly arranged on the inner side of the lower end of the pressure reducing valve body and is communicated with the air inlet channel, a plurality of air outlets are transversely arranged on the upper edge of the connecting seat, the valve core assembly is; the pressure stabilizing piston is arranged in the pressure reducing valve body in a sliding mode, a pressure bearing face is arranged at the upper end of the pressure stabilizing piston and located above the air inlet channel, the power air can act on the pressure bearing face to enable the pressure stabilizing piston to overcome the elastic force of a second spring to move upwards, the second spring is arranged between the pressure stabilizing piston and the pressure reducing valve body and forces the pressure stabilizing piston to move downwards, the pressing ring is fixedly arranged at the lower end of the pressure stabilizing piston, and the pressure stabilizing piston drives the pressing ring to move upwards and downwards to open and close the air inlet channel; the pressure reducing valve body is also provided with a starting air outlet, a joint component is arranged at the starting air outlet, and the joint component is connected with the air pipe;
the container valve comprises a container valve body, a starting piston, a puncture needle, a third spring, a sealing diaphragm, a sealing gland, a liquid outlet joint, a limit nut and an adjusting screw; the container valve body is provided with a starting air inlet hole, the joint assembly is arranged at the position of the starting air inlet hole and connected with the air pipe, the starting piston is arranged in the container valve body in a sliding mode, the pricking pin is fixedly arranged at the lower end of the starting piston, the third spring is arranged between the starting piston and the valve body and forces the starting piston to move upwards, a starting cavity is formed between the starting piston and the valve body, and the starting air inlet hole is communicated with the starting cavity; the outer side of the lower end of the container valve body is suitable for being connected to a fire extinguisher container, the sealing gland is fixedly arranged on the inner side of the lower end of the container valve body, and the sealing membrane is arranged between the sealing gland and the container valve body in a sealing manner; the power air can enter the starting cavity from the starting air inlet hole and can act on the starting piston to enable the starting piston to overcome the elastic force of the third spring to move downwards and puncture the sealing membrane through the puncture needle; the limiting nut is fixedly arranged at the upper end of the container valve body, the liquid outlet joint is slidably arranged on the limiting nut, the adjusting screw is in threaded connection with the limiting nut, and the adjusting screw abuts against the liquid outlet joint and is used for limiting the maximum extension length of the liquid outlet joint.
Preferably, the number of the air outlets is four, and the air outlets are evenly distributed along the circumferential direction. Further mixing the power gas and the fire extinguishing agent fully.
Preferably, the bearing surface is in the shape of a circular arc, and the upper end surface of the bearing ring is inclined from top to bottom from inside to outside. The above structure mainly considers the balance of the air pressure and the second spring force.
Preferably, the pressing ring is sleeved at the lower end of the pressure stabilizing piston and is fixed by a nut. The structure is simple and reliable, and the installation is convenient.
As an improvement, the liquid outlet joint is arranged in the limit nut in a sliding mode and is connected in the limit nut in a rotating mode. The liquid outlet joint can slide up and down and rotate left and right, and the adjustment range of the liquid outlet joint is improved.
As an improvement, a protective cover is detachably arranged at the upper end of the liquid outlet joint. The protective cover is used for protecting the container valve before the container valve is connected into a fire extinguishing pipe network, on one hand, foreign matters can be prevented from entering the container valve to influence normal use of the container valve, and on the other hand, the upper end face of the liquid outlet connector is protected to avoid abrasion and deformation of the liquid outlet connector to influence the sealing performance of the liquid outlet connector.
Preferably, the protective cover is in threaded connection with the liquid outlet joint, and a cushion pad is arranged between the protective cover and the liquid outlet joint. The threaded connection is simple and reliable, and the installation is convenient; the buffer pad is used for protecting the liquid outlet joint and preventing the protective cover from pressing against the liquid outlet joint to deform the liquid outlet joint.
The working principle of the scheme is as follows: power gas (nitrogen) in the power gas bottle enters an air inlet channel of the pressure reducing valve from the first air inlet and the second air inlet, a small part of gas in the air inlet channel enters a starting air inlet hole of the container valve from the starting air outlet hole through the gas pipe, the starting cavity is expanded, the starting piston is pushed to move downwards, and therefore the puncture needle punctures the sealing film, and the container valve is opened. Most of the gas in the gas inlet channel pushes the valve core component to move downwards, so that the gas outlet is opened, most of the kinetic gas enters the fire extinguishing agent container from the gas outlet, is mixed with the fire extinguishing agent, is discharged from the container valve at a high speed and enters a fire extinguishing pipe network. When the power air continuously enters the pressure reducing valve, when the pressure is overlarge, the pressure of the second spring is overcome by the pressure bearing surface, and the pressure stabilizing piston is pushed to move upwards, so that the opening area of the air inlet channel is reduced by the pressing ring, the air input of the power air is further reduced, and the air pressure in the pressure reducing valve is reduced; when the pressure is too small, the second spring can push the pressure stabilizing piston to move downwards, and the opening area of the air inlet channel is increased so as to increase the air inlet amount of the power gas; by continuously repeating the process, the dynamic pressure of the power gas passing through the pressure reducing valve is kept in dynamic balance, and further stable pressure conveying is realized.
Compared with the prior art, the utility model has the advantages of it is following:
1. the pressure reducing valve is provided with a first air inlet and a second air inlet, and when the fire extinguishing system is started, the power gas in the power gas cylinder can quickly enter the pressure reducing valve in a large amount, so that the response speed of the whole fire extinguishing system is increased.
2. The gas outlet on the pressure reducing valve is provided with a plurality of gas outlets along the transverse direction, compared with the prior art in which the gas outlets are single and along the longitudinal direction, the pneumatic fire extinguishing agent and the fire extinguishing agent can be better fully mixed, and the occurrence of air bags and convection phenomena is avoided.
3. The outer side of the lower end of the pressure reducing valve body is provided with an external thread, and the inner side of the lower end of the pressure reducing valve body is provided with an internal thread which is respectively used for connecting the fire extinguishing agent container and the installation connecting seat; the outer side of the lower end of the container valve body is provided with an external thread, and the inner side of the lower end of the container valve body is provided with an internal thread which is respectively used for connecting a fire extinguishing agent container and installing a sealing gland; the structure is simple and reasonable, and the installation and the maintenance are convenient.
4. The liquid outlet joint on the container valve can be adjusted in a longitudinal telescopic mode, so that the container valve can be connected into a fire extinguishing pipe network more conveniently, the connection length of the liquid outlet joint can be ensured, and the connection sealing performance of the liquid outlet joint is improved.
Drawings
Fig. 1 is a half sectional view of a preferred embodiment according to the present invention;
FIG. 2 is a semi-sectional view (in a natural state) of a pressure reducing valve according to a preferred embodiment of the present invention;
FIG. 3 is another cross-sectional view of a preferred embodiment of a pressure relief valve in another orientation (in an open position) in accordance with the present invention;
FIG. 4 is a semi-sectional view of a container valve according to a preferred embodiment of the present invention;
fig. 5 is an enlarged view of a portion a of fig. 4 according to a preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the terms of orientation and positional relationship indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of protection of the present invention.
As shown in fig. 1 to 5, a preferred embodiment of the present invention includes a pressure reducing valve 1 and a container valve 2, wherein the pressure reducing valve 1 is used for reducing pressure of power gas and for starting the container valve 2, and the container valve 2 is used for controlling and releasing fire extinguishing agent; an air pipe 3 is connected between the pressure reducing valve 1 and the container valve 2. Specifically, the method comprises the following steps:
the pressure reducing valve 1 comprises a pressure reducing valve body 11, a connecting seat 12, a valve core assembly 13, a first spring 14, a pressure stabilizing piston 15, a second spring 16 and a pressing ring 17; the pressure reducing valve body 11 is provided with a first air inlet 111 and a second air inlet 112, an air inlet channel 113 is arranged in the pressure reducing valve body 11, the outer side of the lower end of the pressure reducing valve body 11 is suitable for being connected to a fire extinguishing agent container, the connecting seat 12 is fixedly arranged on the inner side of the lower end of the pressure reducing valve body 11, the connecting seat 12 is communicated with the air inlet channel 113, a plurality of air outlets 121 are transversely arranged on the upper edge of the connecting seat 12, the valve core assembly 13 is slidably arranged in the connecting seat 12 and used for opening and closing the air outlets 121, and the first spring 14 is arranged between the; the pressure stabilizing piston 15 is arranged in the pressure reducing valve body 11 in a sliding mode, the upper end of the pressure stabilizing piston 15 is provided with a pressure bearing face 151, the pressure bearing face 151 is located above the air inlet channel, power air can act on the pressure bearing face 151 to enable the pressure stabilizing piston 15 to overcome the elastic force of a second spring 16 to move upwards, the second spring is arranged between the pressure stabilizing piston 15 and the pressure reducing valve body 11 and forces the pressure stabilizing piston 15 to move downwards, a pressing ring 17 is fixedly arranged at the lower end of the pressure stabilizing piston 15, and the pressure stabilizing piston 15 drives the pressing ring 17 to move upwards and downwards to open and close the air inlet channel 113; the pressure reducing valve body 11 is further provided with a starting air outlet 114, the starting air outlet 114 is provided with a joint component 4, and the joint component 4 is connected with the air pipe 3.
The container valve 2 comprises a container valve body 21, an actuating piston 22, a puncture needle 23, a third spring 24, a sealing diaphragm 25, a sealing gland 26, a liquid outlet joint 27, a limit nut 28 and an adjusting screw 29; a starting air inlet hole 211 is formed in the container valve body 21, a joint component 4 is arranged at the position of the starting air inlet hole 211, the joint component 4 is connected with the air pipe 3, the starting piston 22 is arranged in the container valve body 21 in a sliding mode, the puncture needle 23 is fixedly arranged at the lower end of the starting piston 22, the third spring 24 is arranged between the starting piston 22 and the valve body 21 and forces the starting piston 22 to move upwards, a starting cavity 212 is formed between the starting piston 22 and the valve body 21, and the starting air inlet hole 211 is communicated with the starting cavity 212; the outer side of the lower end of the container valve body 21 is suitable for being connected to a fire extinguisher container, the sealing gland 26 is fixedly arranged on the inner side of the lower end of the container valve body 21, and the sealing diaphragm 25 is arranged between the sealing gland 26 and the container valve body 21 in a sealing manner; the power air can enter the starting cavity 212 from the starting air inlet hole 211 and can act on the starting piston 22 to enable the starting piston 22 to move downwards against the elastic force of the third spring 24 and puncture the sealing diaphragm 25 through the puncture needle 23; the limiting nut 28 is fixedly arranged at the upper end of the container valve body 21, the liquid outlet joint 27 is slidably arranged on the limiting nut 28, the adjusting screw 29 is in threaded connection with the limiting nut 28, and the adjusting screw 29 abuts against the liquid outlet joint 27 and is used for limiting the maximum extension length of the liquid outlet joint 27.
In this embodiment, the number of the air outlets 121 is four, and the four air outlets are uniformly distributed along the circumferential direction. The pressure-bearing face 151 is circular arc-shaped, and the upper end face of the pressing ring 17 is inclined from top to bottom from inside to outside. The retainer 17 is fitted over the lower end of the pressure stabilization piston 15 and fixed by a nut 171. The liquid outlet joint 27 is slidably disposed in the limit nut 28 and rotatably connected to the limit nut 28. The upper end of the liquid outlet joint 27 is detachably provided with a protective cover 271. The protecting cover 271 is screwed on the liquid outlet joint 27, and a cushion 272 is arranged between the protecting cover 271 and the liquid outlet joint 27.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A pressure reducing valve, characterized by: the pressure-stabilizing valve comprises a pressure-reducing valve body, a connecting seat, a valve core assembly, a first spring, a pressure-stabilizing piston, a second spring and a pressing ring; the fire extinguishing valve comprises a pressure reducing valve body, a valve core assembly, a connecting seat, a first spring, a second spring, a valve core assembly and a valve core assembly, wherein the pressure reducing valve body is provided with a first air inlet and a second air inlet, an air inlet channel is arranged in the pressure reducing valve body, the outer side of the lower end of the pressure reducing valve body is suitable for being connected to a fire extinguishing agent container, the connecting seat is fixedly arranged on the inner side of the lower end of the pressure reducing valve body and is communicated with the air inlet channel, a plurality of air outlets are transversely arranged on the upper edge of the connecting seat, the valve core assembly is; the pressure stabilizing piston is arranged in the pressure reducing valve body in a sliding mode, a pressure bearing face is arranged at the upper end of the pressure stabilizing piston and located above the air inlet channel, power air can act on the pressure bearing face to enable the pressure stabilizing piston to overcome the elastic force of a second spring to move upwards, the second spring is arranged between the pressure stabilizing piston and the pressure reducing valve body and forces the pressure stabilizing piston to move downwards, the pressing ring is fixedly arranged at the lower end of the pressure stabilizing piston, and the pressure stabilizing piston drives the pressing ring to move upwards and downwards to open and close the air inlet channel; the pressure reducing valve body is further provided with a starting air outlet, a joint component is arranged at the starting air outlet and connected with an air pipe.
2. A pressure reducing valve according to claim 1, wherein: the number of the air outlets is four, and the four air outlets are evenly distributed along the circumferential direction.
3. A pressure reducing valve according to claim 1, wherein: the pressure-bearing surface is arc-shaped, and the upper end surface of the pressure ring inclines from top to bottom from inside to outside.
4. A pressure reducing valve according to claim 1, wherein: the pressing ring is sleeved at the lower end of the pressure stabilizing piston and is fixed through a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921114949.9U CN210716168U (en) | 2019-07-16 | 2019-07-16 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921114949.9U CN210716168U (en) | 2019-07-16 | 2019-07-16 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210716168U true CN210716168U (en) | 2020-06-09 |
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ID=70933037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921114949.9U Active CN210716168U (en) | 2019-07-16 | 2019-07-16 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210716168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483123A (en) * | 2021-06-25 | 2021-10-08 | 湖南三一中型起重机械有限公司 | Control valve with electric control function, air brake control system and operation machine |
-
2019
- 2019-07-16 CN CN201921114949.9U patent/CN210716168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483123A (en) * | 2021-06-25 | 2021-10-08 | 湖南三一中型起重机械有限公司 | Control valve with electric control function, air brake control system and operation machine |
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