CN106949279A - Unidirectional container value - Google Patents

Abstract

The invention discloses a kind of unidirectional container value, discharge upper end of joint is intraoral is provided with inner nut for its, annular boss is provided with the inside of middle part, air flue nut is provided with lower port, nonreturn valve core is provided between air flue nut and inner nut, nonreturn valve core includes bonnet and valve rod, and bonnet is located at the upper port edge of annular boss, and valve rod is stretched into the pilot hole of air flue nut；Interior sealing cap is provided with valve body, interior sealing cap is isolated between the upper port of valve body and lower port；Start interface to be arranged on the lateral wall of valve body, the end for starting interface is connected with pressure cap, pneumatic interface is provided with pressure cap, the bottom for starting interface is provided with the first through hole connected with the upper port of valve body, start in interface and be provided with first piston, the side of first piston is provided with the first push rod, and the first push rod is stretched into first through hole.This unidirectional container value of the invention is simple in construction, safe and reliable, sealing effectiveness is good and inverse-stopping functions with check valve.

Description

One-way container valve

technical field

The invention belongs to the field of fire fighting equipment and relates to a one-way container valve.

Background technique

Container valves are widely used in the field of fire-fighting equipment. In recent years, with the overall development of the field of fire-fighting equipment, there are higher requirements for its safety, reliability and functionality. At present, there are many kinds of container valves for gas fire extinguishing agent cylinders, which can be divided into electric automatic drive, electric manual drive and mechanical emergency drive according to the different driving methods; according to the different sealing methods, they can be divided into diaphragm seal type and piston seal type. formula etc. There are generally some problems in the above-mentioned various existing container valves, such as: the electric drive container valve, its electric control system is easily affected by external factors such as static electricity, causing mis-spraying operation, and the safety performance is relatively poor; the diaphragm sealed container valve, its membrane Sheet is difficult to be punctured sometimes, and gas extinguishing agent can not be ejected normally in time, and reliability performance is relatively poor; Especially lack a kind of container valve with one-way valve function.

Contents of the invention

In order to solve the above problems, the present invention provides a one-way container valve, which has a simple structure, is safe and reliable, has a good sealing effect and has the non-return function of a one-way valve.

In order to achieve the above object, the present invention adopts the following technical solutions to solve the problem.

A one-way container valve used in a fire extinguishing system, comprising: a gas collecting pipe joint, a valve body and a starting interface. The gas collecting pipe joint has an inner nut in the upper port, an annular boss on the inner side of the middle part, and a lower An airway nut is arranged in the port, and the end of the airway nut is provided with an airway and a guide hole, and a one-way valve core is arranged between the airway nut and the inner nut, and the one-way valve core includes a valve cover and the valve stem, the valve cover is located on the edge of the upper port of the annular boss, and the valve stem extends into the guide hole of the airway nut; the valve body is hollow, and the upper port of the valve body is connected to the The gas collecting pipe joint is connected, the lower port is connected with the fire extinguishing agent cylinder in the fire extinguishing system, the valve body is also provided with an inner sealing cap, and the inner sealing cap is isolated between the upper port and the lower port of the valve body, The inner sealing cap is barrel-shaped, its open end is connected to the inner side of the valve body, and its blind end extends toward the upper port of the valve body; the starting interface is arranged on the outer wall of the valve body, The end of the starting interface is connected with a pressure cap, the pressure cap is provided with a pneumatic interface, the bottom of the starting interface is provided with a first through hole communicating with the upper port of the valve body, and the first through hole is The hole is facing the side wall of the inner sealing cap, a first piston is arranged in the starting interface, and a first ejector rod is arranged on one side of the first piston, and the first ejector rod extends into the first through hole.

According to the one-way container valve of the present invention, the lower port of the valve body is connected to the gas fire extinguishing agent cylinder through threads, the upper port of the gas collecting pipe joint is connected to the pipeline of the pipe network fire extinguishing system through threads, and the inner sealing cap blocks the valve body into an upper chamber and the lower chamber, the upper chamber is a low-pressure area, and the lower chamber is a high-pressure area. At this time, there is no passage between the gas fire extinguishing agent cylinder and the pipeline of the pipe network fire extinguishing system; when there is no fire, the entire fire extinguishing pipeline is in a state of air pressure balance At this time, under the action of gravity, the one-way valve core and the annular boss seal the gas collecting pipe joint into two upper and lower chambers; when a fire occurs, the high-pressure driving gas enters the first piston and the first piston through the pneumatic interface on the pressure cap. Between the inner sides of the pressure caps, quickly push the first piston to move to the left, driving the small end of the first ejector rod to hit the top of the inner sealing cap, the upper part of the inner sealing cap breaks at the breaking groove, the upper chamber and the lower chamber of the valve body are connected, and the gas The fire extinguishing agent rushes out from the steel cylinder, and enters the lower port of the gas collecting pipe joint through the airway of the airway nut. At this time, the air pressure in the single container valve is higher than the air pressure in the fire extinguishing system pipeline, causing the gas fire extinguishing agent to push the first sealing gasket to move upward, and then Drive the bonnet and the valve stem to move upwards. At this time, the gas fire extinguishing agent cylinder is connected with the pipeline of the pipe network fire extinguishing system, and the gas fire extinguishing agent is sprayed out through the collecting pipe and the gas pipeline to extinguish the fire. In case of emergency, the one-way container valve of the present invention can also be manually driven, just turn the nut counterclockwise, the cone-top valve core will be twisted out, and the high-pressure gas fire extinguishing agent in the steel cylinder will enter the second channel from the first channel. The second channel enters the third channel through the annular groove on the valve body, and then reaches between the first piston and the inner side of the pressure cap, pushes the first piston to move to the left, and then drives the first ejector rod to break the upper part of the inner sealing cap, and the gas fire is extinguished The agent is flushed out of the steel cylinder and sprayed out through the manifold and gas pipeline to extinguish the fire. The one-way container valve of the present invention, when replacing or maintaining the gas fire extinguishing agent steel cylinder in the fire extinguishing system, the valve body and the steel cylinder are disassembled from the lower port of the gas collecting pipe joint. The pipeline is not connected to the outside world, which will not cause gas leakage in the pipeline of the fire extinguishing system; and during the fire extinguishing process, due to the blocking effect of the one-way valve core, the gas fire extinguishing agent will not enter other steel cylinders with relatively low gas pressure In the process, it can prevent the occurrence of the delayed discharge of gas fire extinguishing agent.

Preferably, the inner sealing cap is made of brittle material, and the outer wall of the inner sealing cap is provided with breaking grooves.

According to the one-way container valve of the present invention, the inner sealing cap is made of brittle material, and the outer wall of the inner sealing cap is provided with a breaking groove. Break the inner sealing cap to ensure that the gas fire extinguishing agent can be rushed out of the cylinder in time.

Preferably, a limit slot is provided on the first push rod, a limit snap ring is provided in the start interface, and the limit snap ring is caught in the limit slot on the first push rod.

According to the one-way container valve of the present invention, the snap ring stuck in the limiting groove of the first ejector rod can prevent the first ejector rod from easily colliding with the valve body or the gas fire extinguishing agent cylinder connected with the valve body during transportation. to the inner sealing cap to prevent the failure of the valve body or mis-spraying of the fire extinguishing agent; and when the one-way container valve is activated, due to the high pressure of the high-pressure gas pushing the piston, the snap ring will be supported by the first push rod during the movement. Open, will not affect the normal starting function of the valve body.

Preferably, the valve rod is connected to the lower end surface of the valve cover, a first sealing gasket is further provided on the lower end surface of the valve cover, and ribs are vertically provided on the upper end surface of the valve cover.

According to the one-way container valve of the present invention, the valve stem is connected to the lower end surface of the valve cover, and can extend into the guide hole of the airway nut, so as to ensure that the valve stem and the valve cover move along the direction of the guide hole, and the lower end surface of the valve cover There is a gasket on the top to enhance the sealing performance. Ribs are vertically arranged on the upper surface of the bonnet. When the bonnet moves upward, it is separated between the bonnet and the inner nut to prevent the bonnet from blocking the through hole of the inner nut. Make sure the gas path is unobstructed.

As a preference, the valve body is also provided with a pressure relief port, the pressure relief port is provided with a pressure relief hole, the pressure relief hole communicates with the lower port of the valve body, and the pressure relief port is provided with a A safety diaphragm, the safety diaphragm is blocked at the port of the pressure relief hole.

According to the one-way container valve of the present invention, when the pressure in the gas fire extinguishing agent cylinder reaches a dangerous value, the gas fire extinguishing agent will break through the safety diaphragm at the port of the pressure relief hole and leak out from the pressure relief port. the occurrence of dangerous accidents.

Preferably, the valve body is further provided with a pressure measurement interface, the pressure measurement interface is connected with a pressure gauge seat, and the pressure gauge seat is connected with a pressure gauge.

According to the one-way container valve of the present invention, the air pressure in the gas fire extinguishing agent cylinder can be monitored in real time to prevent dangerous accidents.

Preferably, the pressure gauge seat has a first port and a second port, the pressure measuring port is provided with a second through hole communicating with the lower port of the valve body, and the first port is connected to the measuring port. The pressure port is connected, the second port is threadedly connected with the pressure gauge, the first port of the pressure gauge seat is equipped with a second piston, and the second piston is in clearance fit with the inner side wall of the first port, The bottom of the first port is provided with a third through hole communicating with the first port and the second port, and one side of the second piston is provided with a second push rod, and the second push rod extends from the The third through hole extends into the second port, the second push rod is a tubular structure, and the side wall of the connection between the second push rod and the second piston is provided with a side hole, and the side wall The hole communicates with the end of the second push rod.

According to the one-way container valve of the present invention, the second piston is in clearance fit with the first port of the pressure gauge seat, and the second push rod is slidingly fitted with the third through hole, and the second piston can move along with the second push rod in the first port of the pressure gauge seat. Sliding in one port, when the pressure gauge is connected to the second port of the pressure gauge base, the interface of the pressure gauge will press the end of the second plunger to the other side, so that the second piston is away from the third through hole, at this time The interface of the pressure gauge communicates with the second through hole in the pressure measuring interface through the end of the second ejector rod and the side hole, and finally communicates with the lower port of the valve body, so that the pressure gauge can normally measure the gas fire extinguishing agent cylinder When the pressure gauge connected to the second port of the pressure gauge seat is removed, the second piston slides to the bottom of the first port under the pressure of the lower port of the valve body, and the second plunger completely enters the third port. In the hole, the second piston blocks the third through hole, and the second port of the pressure gauge seat is isolated from the gas fire extinguishing agent cylinder. The above structure ensures that the gas fire extinguishing agent cylinder will not leak when the pressure gauge is disassembled. It is not necessary to release the high-pressure fire extinguishing agent in the cylinder in advance.

Preferably, the valve body is provided with a manual valve interface, the bottom of the manual valve interface is provided with a first channel communicating with the lower port of the valve body, and the side wall of the manual valve interface is provided with a channel leading to the The inner side of the pressure cap and the second channel between the first piston, the manual valve interface is equipped with a cone top valve core, the top of the cone top valve core is facing the port of the first channel, so The outer side of the manual valve interface is provided with a threaded connection part, the threaded connection part is connected with a nut, and the inner side wall of the end of the nut is pressed on the cone top valve core.

According to the one-way container valve of the present invention, by rotating the nut, it is possible to control the blocking or moving away from the port of the first channel by the cone-top valve core. When the cone-top valve core is far away from the port of the first channel, the first channel and the second channel The two channels are connected, and the high-pressure gas in the gas fire extinguishing agent cylinder passes through the first channel, the second channel, the annular groove and the third channel, and finally enters between the first piston and the inner side of the pressure cap, and pushes the first piston and the first The ejector rod breaks the inner sealing cap, and finally the gas fire extinguishing agent cylinder is connected with the gas collecting pipe, realizing the manual activation of the one-way container valve of the fire extinguishing system.

Preferably, the edge of the upper port of the valve body is provided with an upwardly-opening annular groove, the second channel communicates with the annular groove, and the collector joint is provided with an annular step surface, and the annular step surface The opening of the annular groove is blocked, and a third channel is provided on the side wall of the starting interface, one end of the third channel communicates with the annular groove, and the other end leads into the first piston and the between the inner sides of the press cap.

According to the one-way container valve of the present invention, the annular groove is arranged on the upper port of the valve body. After the gas collecting pipe joint is connected to the upper port of the valve body, the annular step surface on the gas collecting pipe joint will cover the opening of the annular groove. The annular groove forms an annular channel, and the second channel and the third channel communicated with the annular groove are conducted through the annular channel, so that the high-pressure gas in the gas fire extinguishing agent cylinder can be introduced between the first piston and the inner side of the pressure cap, so that The fire extinguishing agent cylinder of the fire extinguishing system can use its own high-pressure gas to activate the container valve to extinguish the fire without connecting to an external high-pressure gas source, which makes the start of the fire extinguishing system more convenient and reliable.

Preferably, the side wall of the nut is provided with a first threaded through hole and a second threaded through hole longitudinally, and the first threaded through hole and the second threaded through hole are respectively connected with a first threaded through hole. screw and a second screw, the end of the first screw extends between the inner wall of the end of the nut and the end of the manual valve interface, the end of the second screw extends toward the Between the threaded connection part and the outer wall of the valve body.

According to the one-way container valve of the present invention, the first screw passes through the first threaded through hole and extends between the inner side wall of the end of the nut and the end of the manual valve interface, which can prevent the nut from being excessively screwed in and crushing the cone top For the valve core, the end of the second screw extends between the threaded connection part and the outer wall of the valve body, preventing the nut from being unscrewed excessively and disengaging from the manual valve interface.

Description of drawings

Fig. 1 is the full cut-away structure schematic diagram of an embodiment of one-way container valve of the present invention;

Fig. 2 is a schematic diagram of a full cross-sectional left view of the one-way container valve shown in Fig. 1 .

In Fig. 1 and Fig. 2: 1 air collecting pipe joint; 101 upper port of air collecting pipe joint; 102 lower port of air collecting pipe joint; 103 annular boss; 104 annular step surface; 2 inner nut; 302 guide hole; 4 one-way valve core; 401 valve cover; 402 valve stem; 403 rib plate; 5 valve body; 501 valve body upper port; 502 valve body lower port; 506 pressure relief hole; 507 pressure measuring port; 508 second through hole; 509 manual valve port; 510 first channel; 511 second channel; 512 annular groove; 513 third channel; 514 valve body upper chamber; 515 valve body lower chamber; 6 inner seal cap; 601 breaking groove; 7 pressure cap; 701 pneumatic interface; 8 first piston; 801 first ejector rod; 802 limit groove; pad; 11 safety diaphragm; 12 pressure gauge seat; 1201 first port; 1202 second port; 1203 third through hole; 13 pressure gauge; 14 second piston; 1402 second ejector rod; 1403 side hole; 15 cone Spool; 16 nut; 1601 second threaded through hole; 1602 first threaded through hole; 17 second screw; 18 first screw; 19 second gasket; 20 first O-ring; 21 second O-ring ; 22 safety screw; 23 third gasket; 24 screw plug; 25 combined gasket; 26 third O-ring;

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, an embodiment of the present invention provides a one-way container valve for a fire extinguishing system, including: a gas collecting pipe joint 1, a valve body 5 and a starting interface 503, the gas collecting pipe joint 1, its An inner nut 2 is arranged in the upper port 101, an annular boss 103 is arranged on the inner side of the middle part, an airway nut 3 is arranged in the lower port 102, and an airway 301 and a guide hole 302 are arranged at the end of the airway nut 3 A one-way valve core 4 is arranged between the airway nut 3 and the inner nut 2, the one-way valve core 4 includes a valve cover 401 and a valve stem 402, and the valve cover 401 is located on the ring boss 103 On the edge of the upper port, the valve stem 402 extends into the guide hole 302 of the airway nut 3; the valve body 5 is hollow, and the upper port 501 of the valve body 5 is connected with the manifold joint 1, and the lower The port 502 is connected to the fire extinguishing agent cylinder in the fire extinguishing system, and the valve body 5 is also provided with an inner sealing cap 6, and the inner sealing cap 6 is isolated between the upper port 501 and the lower port 502 of the valve body 5, The inner sealing cap 6 is barrel-shaped, its open end is connected to the inner side of the valve body 5, and its blind end extends toward the upper port 501 of the valve body 5; the starting interface 503 is arranged on the valve body 5, the end of the starting interface 503 is connected with a pressure cap 7, the pressure cap 7 is provided with a pneumatic interface 701, and the bottom of the starting interface 503 is provided with an upper port connected to the valve body 5. 501 communicated with the first through hole 504, the first through hole 504 is facing the side wall of the inner sealing cap 6, the first piston 8 is arranged in the starting interface 503, and one side of the first piston 8 A first push rod 801 is provided, and the first push rod 801 protrudes into the first through hole 504 .

In the above embodiment, the lower port 502 of the valve body 5 is connected with the gas fire extinguishing agent steel cylinder through threads, and the upper port 101 of the gas collecting pipe joint 1 is connected with the pipeline of the pipe network fire extinguishing system through threads, and the inner sealing cap 6 blocks the valve body 5 as The upper chamber 514 and the lower chamber 515, the upper chamber 514 is a low-pressure area, and the lower chamber 515 is a high-pressure area. At this time, the gas fire extinguishing agent cylinder and the pipeline of the pipe network fire extinguishing system do not form a path; when there is no fire situation, the entire The fire extinguishing pipeline is in a state of air pressure balance. At this time, under the action of gravity, the one-way valve core 4 and the annular boss 103 seal the gas collecting pipe joint 1 into upper and lower chambers; when a fire occurs, the high-pressure driving gas passes through the pressure The pneumatic interface 701 on the cap 7 enters between the first piston 8 and the inner side of the pressure cap 7, quickly pushes the first piston 8 to move to the left, drives the small end of the first ejector rod 801 to impact the top of the inner sealing cap 6, and the upper part of the inner sealing cap 6 Break from the breaking groove 601, the upper chamber 514 of the valve body 5 communicates with the lower chamber 515, the gas fire extinguishing agent rushes out from the steel cylinder, enters the lower port 102 of the gas collecting pipe joint 1 through the air channel 301 of the air channel nut 3, at this time The air pressure in the valve of the single container is higher than the air pressure in the pipeline of the fire extinguishing system, causing the gas fire extinguishing agent to push the first sealing gasket 10 to move upward, and then drive the valve cover 401 and valve stem 402 to move upward. At this time, the gas fire extinguishing agent cylinder and the pipe network fire extinguishing system The pipeline is connected, and the gas fire extinguishing agent is sprayed out through the manifold and the gas pipeline to extinguish the fire. In case of emergency, the one-way container valve of the present invention can also be manually driven, only need to rotate the nut 16 counterclockwise, the cone top valve core 15 will be screwed out, and the high-pressure gas fire extinguishing agent in the steel cylinder will flow from the first channel 510 Enter the second passage 511, enter the third passage 513 through the annular groove 512 on the valve body 5, and then reach between the first piston 8 and the inner side of the pressure cap 7, push the first piston 8 to move left, and then drive the first push rod 801 breaks the inner sealing cap 6 top, and the gas fire extinguishing agent rushes out of the steel cylinder, and sprays out the fire through the manifold and the gas pipeline. The one-way container valve of the present invention, when replacing or maintaining the gaseous fire extinguishing agent steel cylinder in the fire extinguishing system, the valve body 5 and the steel cylinder are unloaded from the lower port 102 of the gas collecting pipe joint 1. At this time, due to the blocking of the one-way valve core 4 Function, the fire extinguishing system pipeline is not connected to the outside world, which will not cause gas leakage in the fire extinguishing system pipeline; and during the fire extinguishing process, due to the blocking effect of the one-way valve core 4, the gas fire extinguishing agent will not enter other gas pressure In the relatively low steel cylinder, it can prevent the occurrence of delayed ejection of gas fire extinguishing agent.

According to an embodiment of the present invention, the inner sealing cap 6 is made of a brittle material, and the outer wall of the inner sealing cap 6 is provided with a breaking groove 601 .

In the above embodiments, the inner sealing cap 6 is made of a brittle material, and the outer wall of the inner sealing cap 6 is provided with a breaking groove 601. When the first piston 8 drives the first push rod 801 to hit the inner sealing cap 6, it can It is easier to break the inner sealing cap 6 to ensure that the gas fire extinguishing agent can rush out from the steel cylinder in time.

According to an embodiment of the present invention, the first ejector rod 801 is provided with a limit groove 802, and the start interface 503 has a limit snap ring 9, and the limit snap ring 9 is stuck on the first ejector rod. 801 in the limiting groove 802.

In the above embodiment, the limit snap ring 9 stuck in the limit groove 802 of the first ejector rod 801 can make the first ejector rod 801 in the valve body 5 or the gas fire extinguishing agent cylinder connected with the valve body 5 during transportation. It will not easily hit the inner sealing cap 6, so as to prevent the failure of the valve body 5 or the mis-spraying of the fire extinguishing agent; and when the one-way container valve is activated, due to the high pressure of the high-pressure gas that pushes the first piston 8, the limit card The ring 9 will be stretched by the first push rod 801 during the movement, which will not affect the normal starting function of the valve body 5 .

According to an embodiment of the present invention, the valve stem 402 is connected to the lower end surface of the valve cover 401, and a first gasket 10 is also provided on the lower end surface of the valve cover 401, and the upper surface of the valve cover 401 Ribs 403 are vertically arranged on the end face.

In the above embodiments, the valve stem 402 is connected to the lower end surface of the valve cover 401 and can be inserted into the guide hole 302 of the airway nut 3 to ensure that the valve stem 402 and the valve cover 401 move along the direction of the guide hole 302, and the valve cover 401 A gasket is provided on the lower end surface of the bonnet, which can enhance the sealing performance. A rib 403 is vertically provided on the upper end surface of the bonnet 401. When the bonnet 401 moves upward, it is separated between the bonnet 401 and the inner nut 2 to prevent the valve The cover 401 blocks the through hole of the inner nut 2 to ensure a smooth air path.

According to an embodiment of the present invention, the valve body 5 is also provided with a pressure relief interface 505, and a pressure relief hole 506 is arranged in the pressure relief interface 505, and the pressure relief hole 506 is connected with the lower part of the valve body 5. The port 502 is connected, and a safety diaphragm 11 is arranged in the pressure relief interface 505 , and the safety diaphragm 11 is blocked at the port of the pressure relief hole 506 .

In the above embodiments, when the pressure in the gas fire extinguishing agent steel cylinder reaches a dangerous value, the gas fire extinguishing agent will break through the safety diaphragm 11 at the port of the pressure relief hole 506 and leak out from the pressure relief port. The above measures can avoid the pressure caused by high pressure. occurrence of dangerous accidents.

According to an embodiment of the present invention, the valve body 5 is further provided with a pressure measurement interface 507, the pressure measurement interface 507 is connected with the pressure gauge seat 12, and the pressure gauge seat 12 is connected with the pressure gauge 13.

In the above embodiments, the air pressure in the gas fire extinguishing agent cylinder can be monitored in real time to prevent dangerous accidents.

According to an embodiment of the present invention, the pressure gauge seat 12 has a first port 1201 and a second port 1202, and a second through hole communicating with the lower port 502 of the valve body 5 is provided in the pressure measuring interface 507 508, the first port 1201 is connected to the pressure measuring interface 507, the second port 1202 is screwed to the pressure gauge 13, and the first port 1201 of the pressure gauge base 12 is equipped with a second piston 14 , the second piston 14 is in clearance fit with the inner side wall of the first port 1201, and the bottom of the first port 1201 is provided with a third through hole 1203 communicating with the first port 1201 and the second port 1202 , one side of the second piston 14 is provided with a second push rod 1402, and the second push rod 1402 extends from the third through hole 1203 into the second port 1202, and the second push rod 1402 It is a tubular structure, the side wall of the connection between the second push rod 1402 and the second piston 14 is provided with a side hole 1403 , and the side hole 1403 communicates with the end of the second push rod 1402 .

In the above embodiments, the second piston 14 is in clearance fit with the first port 1201 of the pressure gauge base 12, and the second plunger 1402 is in sliding fit with the third through hole 1203. Sliding in the first port 1201 of the gauge base 12, when the pressure gauge 13 is connected to the second port 1202 of the pressure gauge base 12, the interface of the pressure gauge 13 presses the end of the second push rod 1402 to the other side, so that The second piston 14 is far away from the third through hole 1203. At this time, the interface of the pressure gauge 13 is connected to the second through hole 508 in the pressure measuring interface 507 through the end of the second push rod 1402 and the side hole 1403, and finally connected to the valve. The lower port 502 of the body 5 is connected, and the pressure gauge 13 can normally measure the pressure in the gas fire extinguishing agent cylinder; The lower port 502 of the valve body 5 slides to the bottom of the first port 1201 under the pressure, the second push rod 1402 completely enters the third through hole 1203, the second piston 14 blocks the third through hole 1203, and the pressure gauge seat 12 The second port 1202 is isolated from the gas fire extinguishing agent cylinder, and the above structure ensures that the gas fire extinguishing agent cylinder will not leak when the pressure gauge 13 is disassembled, so it is not necessary to release the high pressure fire extinguishing agent in the steel cylinder in advance when the pressure gauge 13 is replaced.

According to an embodiment of the present invention, the valve body 5 is provided with a manual valve interface 509, and the bottom of the manual valve interface 509 is provided with a first passage 510 communicating with the lower port 502 of the valve body 5. The side wall of the valve interface 509 is provided with a second channel 511 leading between the inner side of the pressure cap 7 and the first piston 8. The manual valve interface 509 is equipped with a cone-top valve core 15, the cone The top of the top valve core 15 is facing the port of the first passage 510, and the outside of the manual valve interface 509 is provided with a threaded connection part, and a nut 16 is connected to the threaded connection part, and the end of the nut 16 The inner sidewall of the part is pressed on the cone top spool 15.

In the above embodiments, by rotating the nut 16, it is possible to control whether the conical top spool 15 blocks or moves away from the port of the first passage 510. When the conical top spool 15 is away from the port of the first passage 510, the first passage 510 communicates with the second channel 511, and the high-pressure gas in the gas fire extinguishing agent cylinder passes through the first channel 510, the second channel 511, the annular groove 512 and the third channel 513, and finally enters between the first piston 8 and the inner side of the pressure cap 7 , and push the first piston 8 to drive the first ejector rod 801 to break the inner sealing cap 6, and finally make the gas fire extinguishing agent cylinder conduct with the gas collecting pipe, which can realize the manual start of the one-way container valve of the fire extinguishing system.

According to an embodiment of the present invention, the edge of the upper port 501 of the valve body 5 is provided with an annular groove 512 with an upward opening, the second channel 511 communicates with the annular groove 512, and the gas collecting pipe joint 1 is provided with There is an annular stepped surface 104, the annular stepped surface 104 is blocked on the opening of the annular groove 512, a third channel 513 is provided on the side wall of the starting interface 503, and one end of the third channel 513 communicates with the The annular groove 512 is connected to the other end of which is connected between the first piston 8 and the inner side of the pressure cap 7 .

In the above embodiments, the annular groove 512 is set on the upper port 501 of the valve body 5, and when the gas collecting pipe joint 1 is connected to the upper port of the valve body 5, the annular stepped surface 104 on the gas collecting pipe joint 1 will cover the annular groove 512 At this time, the annular groove 512 forms an annular channel, and the second channel 511 and the third channel 513 communicated with the annular groove 512 are connected through the annular channel, so that the high-pressure gas in the gas fire extinguishing agent cylinder can be introduced into the first piston 8 and the inner side of the pressure cap 7, so that the fire extinguishing agent cylinder of the fire extinguishing system can use its own high-pressure gas to start the container valve for fire extinguishing, without connecting an external high-pressure gas source, making the start of the fire extinguishing system more convenient and reliable.

According to an embodiment of the present invention, the side wall of the nut 16 is provided with a first threaded through hole 1602 and a second threaded through hole 1601 longitudinally, and the first threaded through hole 1602 and the second threaded through hole The first screw 18 and the second screw 17 are respectively connected in the through hole 1601, and the end of the first screw 18 extends to the inner wall of the end of the nut 16 and the end of the manual valve interface 509. Between, the end of the second screw 17 extends between the threaded connection and the outer wall of the valve body 5 .

In the above embodiments, the first screw 18 extends through the first threaded through hole 1602 between the inner side wall of the end of the nut 16 and the end of the manual valve interface 509, which can prevent the nut 16 from being excessively screwed in and crushed. The conical top valve core 15 and the end of the second screw 17 extend between the threaded connection part and the outer wall of the valve body 5 to prevent the nut 16 from being unscrewed excessively and disengaged from the manual valve interface 509 .

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these changes and modifications of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims (10)

1. a kind of unidirectional container value, for fire extinguishing system, it is characterised in that including：

It is provided with gas collection pipe joint (1), its upper port (101) on the inside of inner nut (2), middle part and is provided with annular boss (103) air flue nut (3), is provided with its lower port (102), the end of the air flue nut (3) is provided with airway (301) With pilot hole (302), nonreturn valve core (4), the nonreturn valve core (4) are provided between the air flue nut (3) and inner nut (2) Comprising bonnet (401) and valve rod (402), the bonnet (401) is located at the upper port edge of the annular boss (103), described Valve rod (402) is stretched into the pilot hole (302) of the air flue nut (3)；

Valve body (5), the valve body (5) is hollow, and the upper port (501) of the valve body (5) is connected with the gas collection pipe joint (1) Connect, lower port (502) is connected with the fire-extinguishing bottle in fire extinguishing system, interior sealing cap (6) be additionally provided with the valve body (5), The interior sealing cap (6) is isolated between the upper port of the valve body (5) (501) and lower port (502), the interior sealing cap (6) it is barrel-shaped, its openend is connected to the inner side of the valve body (5), its cecum is square to the upper port (501) of the valve body (5) To extension；

Start interface (503), the startup interface (503) is arranged on the lateral wall of the valve body (5), the startup interface (503) end, which is connected with pressure cap (7), the pressure cap (7), is provided with pneumatic interface (701), the startup interface (503) Bottom is provided with the first through hole (504) connected with the upper port (501) of the valve body (5), and the first through hole (504) is just right First piston (8) is provided with the side wall of the interior sealing cap (6), the startup interface (503), the first piston (8) Side is provided with the first push rod (801), and first push rod (801) is stretched into the first through hole (504).

2. unidirectional container value according to claim 1, it is characterised in that the interior sealing cap (6) is made up of fragile material, Snap slot (601) is provided with the lateral wall of the interior sealing cap (6).

3. unidirectional container value according to claim 1, it is characterised in that limited location is set on first push rod (801) There is limited location snap ring (9) in groove (802), the startup interface (503), the limited location snap ring (9) is stuck in first push rod (801) in the stopper slot (802) on.

4. unidirectional container value according to claim 1, it is characterised in that the valve rod (402) is connected to the bonnet (401) on lower surface, the first sealing gasket (10) is additionally provided with the lower surface of the bonnet (401), the bonnet (401) Gusset (403) is vertically installed with upper surface.

5. unidirectional container value according to claim 1, it is characterised in that be additionally provided with pressure release interface on the valve body (5) (505) relief hole (506), the relief hole (506) and the lower end of the valve body (5), are provided with the pressure release interface (505) Blowout disk (11) is provided with mouth (502) connection, the pressure relief opening (505), blowout disk (11) closure is let out described Press the port of hole (506).

6. unidirectional container value according to claim 1, it is characterised in that be additionally provided with pressure measurement interface on the valve body (5) (507), it is connected with the pressure measurement interface (507) on pressure gauge base (12), the pressure gauge base (12) and is connected with pressure gauge (13)。

7. unidirectional container value according to claim 6, it is characterised in that the pressure gauge base (12) has first port (1201) and second port (1202), it is provided with the pressure measurement interface (507) with the lower port (502) of the valve body (5) even Logical the second through hole (508), the first port (1201) is connected with the pressure measurement interface (507), the second port (1202) it is threadedly coupled with the pressure gauge (13), the second work is equipped with the first port (1201) of the pressure gauge base (12) Fill in (14), the second piston (14) and the madial wall gap of the first port (1201) coordinate, the first port (1201) bottom is provided with the third through-hole (1203) for connecting the first port (1201) and the second port (1202), The side of the second piston (14) is provided with the second push rod (1402), and second push rod (1402) is from the third through-hole (1203) stretch into the second port (1202), second push rod (1402) is tubular structure, second push rod (1402) it is provided with side hole (1403) with the side wall of the junction of the second piston (14), the side hole (1403) and described the The end connection of two push rods (1402).

8. unidirectional container value according to any one of claim 1 to 7, it is characterised in that be provided with the valve body (5) Hand-operated valve interface (509), the bottom of the hand-operated valve interface (509) is provided with the lower port (502) for connecting the valve body (5) First passage (510), the side wall of the hand-operated valve interface (509) is provided with the inner side and described first for leading to the pressure cap (7) Vertex of a cone valve element (15), the vertex of a cone valve are equipped with second channel (511) between piston (8), the hand-operated valve interface (509) Screw thread company is provided with the outside of port of the top of core (15) just to the first passage (510), the hand-operated valve interface (509) Nut (16) is connected with socket part, the threaded joints, the madial wall of the end of the nut (16) is pressed in the vertex of a cone valve On core (15).

9. unidirectional container value according to claim 8, it is characterised in that the edge of the upper port (501) of the valve body (5) The annular groove (512) of opening upwards is provided with, the second channel (511) connects with the annular groove (512), the discharge Annular step surface (104), opening of annular step surface (104) closure in the annular groove (512) are provided with joint (1) On, third channel (513), one end connection institute of the third channel (513) are provided with the side wall for starting interface (503) Annular groove (512) is stated, the other end is passed through between the inner side of the first piston (8) and the pressure cap (7).

10. unidirectional container value according to claim 8, it is characterised in that be provided with the side wall of the nut (16) vertical To being provided with the first tapped through hole (1602) and the second tapped through hole (1601), first tapped through hole (1602) and described The first screw (18) and the second screw (17), the end of first screw (18) are connected in two tapped through holes (1601) Stretch between the madial wall of the end of the nut (16) and the end of the hand-operated valve interface (509), second screw (17) end is stretched between the lateral wall of the threaded joints and the valve body (5).