CN106015714A - Constant-pressure container valve - Google Patents
Constant-pressure container valve Download PDFInfo
- Publication number
- CN106015714A CN106015714A CN201610411847.8A CN201610411847A CN106015714A CN 106015714 A CN106015714 A CN 106015714A CN 201610411847 A CN201610411847 A CN 201610411847A CN 106015714 A CN106015714 A CN 106015714A
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- CN
- China
- Prior art keywords
- valve body
- valve
- exhaust passage
- valve rod
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a constant-pressure container valve. The valve comprises a valve body, a valve rod and a limiting mechanism, wherein the valve rod is connected inside the valve body in a sealed manner; a gas inlet and a gas outlet are formed in the valve body; a pressure adjusting mechanism and a gas exhaust channel matched with the pressure adjusting mechanism are arranged on the valve body; the gas exhaust channel can communicate with the gas inlet, the inside of the valve body and the outside; the gas exhaust channel can be matched with the valve rod and the limiting mechanism, so that the pressure adjusting mechanism has a first working position and a second working position; when the pressure adjusting mechanism is located in the first working position, part of high-pressure gas in the gas exhaust channel can push the pressure adjusting mechanism to move upwards, the gas exhaust channel communicates with the outside, and part of the high-pressure gas in the gas exhaust channel pushes the valve rod to move downwards to open the container valve; when the pressure adjusting mechanism is located in the second working position, the gas exhaust channel is isolated from the outside by the pressure adjusting mechanism, the high-pressure gas in the gas exhaust channel pushes the valve rod to move downwards to open the container valve. The container valve has functions of both a container valve and a pressure reducing valve, has the good sealing effect, can adjust pressure of starting gas to a set value as required, and is flexible and reliable to open.
Description
Technical field
The invention belongs to extinction using gas equipment field, especially relate to a kind of constant pressure type container value.
Background technology
In outer stored-pressure type automatic fire extinguishing system, because extinguishing chemical bottle group bears limited pressure, promote nitrogen need to enter extinguishing chemical bottle group by air relief valve, provide constant-voltage power for fire extinguishing system；When extinguishing chemical bottle group does not works, air relief valve is closed down, answers bubble-free to leak.Domestic existing like product container value and air relief valve exist simultaneously, wasting space, and force value is non-adjustable, it is impossible to adapt to the extinguishing chemical bottle group of different refitting amount, and cannot ensure the safety of extinguishing chemical bottle group.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of and can start pressure according to initial set value regulation, have the constant pressure type container value of decompression concurrently.
The technical solution adopted for the present invention to solve the technical problems is: a kind of constant pressure type container value, including valve body, can in valve body the valve rod of movement and position-limit mechanism, described valve stem seal is connected in valve body, described valve body is provided with the air inlet for driving gas to pass through and gas outlet, described valve body is provided with pressure regulating device and the exhaust passage coordinated with this pressure regulating device, and this exhaust passage can connect air inlet, valve inner and the external world；Described exhaust passage can coordinate with valve rod, position-limit mechanism, pressure regulating device is made to have the first working position and the second working position, when being in the first working position, partial high pressure gas in described exhaust passage can promote and move on pressure regulating device, described exhaust passage is connected with the external world, partial high pressure gas push valve rod in described exhaust passage moves down connection air inlet and gas outlet, to open container value；When being in the second working position, exhaust passage is isolated by pressure regulating device with the external world, and the gases at high pressure in described exhaust passage promote valve rod to move down to open container value.During original state, set the pressure regulating device pressure to valve body, the force value of exhaust passage blocked by i.e. pressure regulating device, the startup gas in container value is entered in exhaust passage enters valve body by air inlet, when starting the setting value that gas pressure is more than pressure regulating device original state, pressure regulating device is upwards pushed up by a part of high pressure gas cognition, make the connection external world, exhaust passage, discharge a part of gases at high pressure, another part high pressure gas is known from experience valve stem tip one downward pressure of applying, promotion valve rod moves down, thus connects air inlet and gas outlet, opens container value.When release gas to pressure is equal to or less than initial set value, pressure regulating device homing.When completing to start, position-limit mechanism applies a restoring force upwards to valve rod, and air inlet does not connects with gas outlet.
Further, described pressure regulating device include mounting seat, the elastic component that can move up and down in mounting seat, for the regulating part regulating elastic component decrement and the blocking piece offseted with elastic component one end, described blocking piece coordinates with exhaust passage.Can change the decrement to elastic component by moving up and down of regulating part, thus change pressure regulating device to blocking the force value of exhaust passage, be adapted to different container bottle, adaptability is high.
Further, described position-limit mechanism includes the return unit being sheathed on valve rod, the location division being located in valve body and connector, and described connector seals with valve interior wall and coordinates, and described return unit one end offsets with location division, and its other end is butted on connector.Elastic component is set between valve rod and connector, it is to avoid elastic component offsets, and structure is more stable.
Further, described position-limit mechanism also includes revolving part, and this revolving part coordinates with valve rod, can move up and down the decrement of regulation return unit.By the decrement moving up and down change return unit of revolving part, the distance that regulating valve stem moves up and down can be facilitated, such that it is able to according to different container bottle, cooperative voltage regulation device sets different unlatching pressure, and structure is more flexible.Open Here pressure is the minimum operating pressures that promoting valve rod to move down, owing in ampoule, discharge pressure scope is less, there is a small amount of leakage in the start bottle bigger in order to avoid pressure, and cause promoting valve rod to move down to cause to open by mistake and open, by the setting of revolving part, when making to exist less leakage rate, it is impossible to promote valve rod to move down and open container value, so that air relief valve has had the function of container value concurrently.
Further, described position-limit mechanism also includes sealing, with valve interior wall, the opening tool coordinated, and this opening tool and valve rod offset to promote valve rod to move down.Opening tool coordinate with the sealing of valve body ensure that valve body in good air-tightness so that valve seal is reliable.
Further, described opening tool top is provided with the groove being connected with exhaust passage.When opening tool end face offsets with valve body inner top surface, it is to avoid blocking exhaust passage, it is ensured that startup gas can be smoothly through groove and promote valve rod to move down.
Further, described valve body is sealedly connected with closeouts, forms the cavity can being connected with exhaust passage in this closeouts, in described cavity, be movably equipped with anti-blocking piece.Owing to the cross section, exhaust passage along valve body cross direction profiles is less, it is easy to by foreign matters from being blocked, anti-blocking piece is when gas passes through, can shake, not only it is prevented effectively from foreign material blocking, and when activity, the foreign material being stuck in exhaust passage can be discharged, it is ensured that the patency of exhaust passage.
Further, being provided with adjusting plug in described cavity, described anti-blocking piece is movably connected in this adjusting plug.Anti-blocking piece is avoided to depart from closeouts.
Further, described valve rod is connected with valve seal by V-shaped seal ring.Good sealing effect, it is ensured that the air-tightness in valve body.
Further, described valve body is provided with valve gap, and this valve gap is communicated with exhaust passage and extraneous through hole.Integrally-built assembling is easy in the setting of valve gap.
The invention has the beneficial effects as follows: have the function of air relief valve and container value, good sealing effect concurrently, can regulate as required and start the pressure of gas to setting value, open flexibility and reliability, simple in construction, it is convenient to assemble.
Accompanying drawing explanation
Fig. 1 is the structural representation of closed mode of the present invention.
Fig. 2 is present invention structural representation when being in the first working position.
Fig. 3 is present invention structural representation when being in the second working position.
Fig. 4 is the cross-sectional view of valve gap.
Fig. 5 is the plan structure schematic diagram of valve gap.
Detailed description of the invention
In order to make those skilled in the art be better understood from the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in inventive embodiments is carried out clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all should belong to the scope of protection of the invention.
With reference to shown in Fig. 1-5, a kind of constant pressure type container value, including valve body 1, can in valve body 1 valve rod 2 of movement and position-limit mechanism.Valve body 1 includes epicoele a, lumen b and cavity of resorption c, in the middle part of valve rod 2, the junction with epicoele a and lumen b is tightly connected by sealing ring 175, valve rod 2 bottom is tightly connected by V-shaped seal ring 21 with the junction of cavity of resorption c and lumen b, V-shaped seal ring 21 not only good sealing effect, and it is good to move reset effect, valve body 1 is provided with the air inlet 15 being connected with lumen b, it is sealedly connected with outlet bung flange 6 by sealing ring 172 on air inlet 15, gas outlet 16 is connected with cavity of resorption c, and cavity of resorption c can be connected with ampoule with straight thread by sealing ring 179.Exhaust passage 3 is formed on valve body 1, this one end, exhaust passage 3 is connected with air inlet 15, the other end of exhaust passage 3 can be connected with valve body 1 external world, in the present embodiment, exhaust passage 3 is arranged on the side relative with air inlet 15, it includes pore d and the parallel circumferentially disposed pore e in horizontal direction, pass through valve rod 2 for the ease of the startup gas of air inlet 15 and flow to exhaust passage 3, valve rod 2 is positioned at one section of diameter of lumen b and reduces, thus gas can flow to exhaust passage 3 along the outer wall of valve rod 2.Certainly exhaust passage 3 can also be arranged on air inlet 15 side.For the impurity blocking preventing exhaust passage 3 to be mixed in gas, in pore d and the junction of pore e, the external world being inwardly inserted into closeouts 12, in order to ensure the air-tightness of valve body 1, this closeouts 12 is tightly connected by sealing ring 171 with valve body 1.Closeouts 12 forms cavity 121 towards the side within valve body 1, this cavity 121 is respectively connected with leading to pore d and pore e, be movably equipped with adjusting plug 13 in cavity 121, have space between outer wall and the inwall of cavity 121 of this adjusting plug 13, i.e. adjusting plug 13 can be the most movable in cavity 121.The second cavity connected with pore d is formed in adjusting plug 13, anti-blocking piece 131 it is connected with in this second cavity, this concrete anti-blocking piece 131 is the anti-blocking pin in " 7 " font, one end of anti-blocking pin bending is fastened between adjusting plug 13 and closeouts 12, anti-blocking pin is avoided to depart from the second cavity, the other end of anti-blocking pin extends in the lumen b of valve body 1, thus when entering impurity in pore d, impurity movable up and down can be discharged pore d by anti-blocking pin, it is also possible to effectively prevent impurity from entering in pore d.
Position-limit mechanism includes the return unit 51 being set in valve rod 2 periphery, the location division 11 being located in valve body 1 and the connector 52 coordinated with valve body 1 epicoele a sealing, in the present embodiment, return unit 51 is spring, location division 11 is the spring base being fixedly connected in valve body 1, the bottom of return unit 51 offsets with location division 11, the top of return unit 51 offsets with connector 52, in order to improve the stability of structure, the outer wall of valve rod 2 stretches out and forms convex edge, extend on connector 52 and form the flange coordinated with this convex edge, when connector 52 moves down, the flange bottom surface of connector 52 props up convex edge end face, valve rod 2 is promoted to synchronize to move down compression return unit 51.In order to ensure air-tightness, between flange side and valve rod 2 outer wall, it is arranged with sealing ring 173, between lateral wall and the inwall of valve body 1 of connector 52, is arranged with sealing ring 174.In the present embodiment, for the air-tightness being further ensured that in valve body 1, it is sealedly connected with cylinder 55 also by sealing ring 176 in valve body 1, connector 52 moves up and down along cylinder 55 inwall, it is sealedly connected with opening tool 54 by sealing ring 177 on cylinder 55, the top of valve body 1 is removably connected with valve gap 14 by gland nut 18, and valve gap 14 is sealedly connected on valve body 1 by sealing ring 178, valve gap 14 offers two through holes 141 can being connected with exhaust passage 3.When being moved upward to the top of valve body 1 in order to avoid opening tool 54, the end face of opening tool 54 offsets with the inner top surface of valve gap 14, cause gas cannot discharge the external world by through hole 141, the summit portion of opening tool 54 raises up, groove 541 is formed in projection, thus can be by groove 541 row to through hole 141 by the gas in exhaust passage 3.In order to regulate the decrement of return unit 51, i.e. regulate the restoring force of return unit 51, the top peripheral of valve rod 2 is arranged with revolving part 53, this revolving part 53 is positioned at the top of connector 52, this revolving part 53 can be the special flat serrated nut of little hexagonal, by revolving part 53 rotating upwardly and downwardly along valve rod 2, the deformation quantity of return unit 51 can be regulated, and then adjust the size of the minimum pressure that actuatable valve bar 2 moves down or regulating valve stem 2 moves down as required ultimate range.
Pressure regulating device includes mounting seat 41, the elastic component 42 that can move up and down in mounting seat 41, the up and down regulating part 43 being connected to mounting seat 41 top and be located at the blocking piece 44 of elastic component 42 lower end, it is provided with for limiting between regulating part 43 and mounting seat 41 locking nut 47 relative to position between regulating part 43 with mounting seat 41, the pressure of elastic component 42 is determined by the restoring force of elastic component 42 by regulating part 43, i.e. determined by the decrement of elastic component 42, in order to improve Assembly stability, the lower end of regulating part 43 is provided with adjustment seat 45, adjustment seat 45 can move up and down along mounting seat 41 inwall, adjustment seat 45 is in " T " font, the lower end of adjustment seat 45 is fastened on elastic component 42, in order to protect pressure regulating device, outside mask in mounting seat 41 sets protection set 46.The through hole 141 that blocking piece 44 is opened on valve gap 14 for closure, the bottom of blocking piece 44 is cone-shaped structure.
The operation principle of the present invention is: as it is shown in figure 1, during original state, the gases at high pressure in ampoule apply a thrust upwards to valve rod 2, owing to valve rod 2 top offsets with valve gap 14, container value is closed.The pressure of the regulation downward compression elastic piece 42 of regulating part 43, thus adjust the plug 44 closure pressure to through hole 141, completing the setting of pressure regulating device safety value, by high voltage startup gas in air inlet 15, portion gas enters exhaust passage 3 by the lumen b of valve body 1.As shown in Figure 2, when starting gas pressure more than the initial safety value set, plug 44 is upwards backed down by high voltage startup gas, i.e. pressure regulating device is in the first working position, thus exhaust passage 3 is connected with through hole 141, gas flows in the direction of the arrow, a part of gases at high pressure are arranged outwardly, until the pressure starting gas is suitable with the initial safety value set, another part gas promotes valve rod 2 to move down by opening tool 54, the lumen b of valve body 1 is connected with cavity of resorption c, i.e. air inlet 15 is connected with gas outlet 16, and container value is opened.As shown in Figure 3, when starting gas pressure equal to or less than the initial safety value set, plug 44 cannot upwards be backed down by high voltage startup gas, i.e. pressure regulating device is in the second working position, thus exhaust passage 3 is isolated with through hole 141, gases at high pressure are not had to arrange outwardly, gas flows in the direction of the arrow, and all gas promotes valve rod 2 to move down by opening tool 54, and the lumen b of valve body 1 is connected with cavity of resorption c, i.e. air inlet 15 is connected with gas outlet 16, and container value is opened.
Above-mentioned detailed description of the invention is used for illustrating the present invention rather than limiting the invention, in the protection domain of spirit and claims of the present invention, and any modifications and changes that the present invention is made, both fall within protection scope of the present invention.
Claims (10)
1. a constant pressure type container value, including valve body (1), can in valve body (1) valve rod (2) of movement and position-limit mechanism, described valve rod (2) is sealedly attached in valve body (1), described valve body (1) is provided with the air inlet (15) for driving gas to pass through and gas outlet (16), it is characterized in that: described valve body (1) is provided with pressure regulating device and the exhaust passage (3) coordinated with this pressure regulating device, it is internal and extraneous that this exhaust passage (3) can connect air inlet (15), valve body (1)；Described exhaust passage (3) can coordinate with valve rod (2), position-limit mechanism, pressure regulating device is made to have the first working position and the second working position, when being in the first working position, partial high pressure gas in described exhaust passage (3) can promote and move on pressure regulating device, described exhaust passage (3) is connected with the external world, partial high pressure gas push valve rod (2) in described exhaust passage (3) moves down connection air inlet (15) and gas outlet (16), to open container value；When being in the second working position, exhaust passage (3) are isolated by pressure regulating device with the external world, and the gases at high pressure in described exhaust passage (3) promote valve rod (2) to move down to open container value.
Constant pressure type container value the most according to claim 1, it is characterized in that: described pressure regulating device includes mounting seat (41), the elastic component (42) that can move up and down in mounting seat (41), the regulating part (43) being used for regulating elastic component (42) decrement and the blocking piece (44) offseted with elastic component (42) one end, and described blocking piece (44) coordinates with exhaust passage (3).
Constant pressure type container value the most according to claim 1, it is characterized in that: described position-limit mechanism includes the return unit (51) being sheathed on valve rod (2), the location division (11) be located in valve body (1) and connector (52), described connector (52) coordinates with valve body (1) inner wall sealing, described return unit (51) one end offsets with location division (11), and its other end is butted on connector (52).
Constant pressure type container value the most according to claim 3, it is characterised in that: described position-limit mechanism also includes that revolving part (53), this revolving part (53) coordinate with valve rod (2), can move up and down the decrement of regulation return unit (51).
Constant pressure type container value the most according to claim 1, it is characterised in that: described position-limit mechanism also includes the opening tool (54) coordinated with valve body (1) inner wall sealing, and this opening tool (54) and valve rod (2) offset to promote valve rod (2) to move down.
Constant pressure type container value the most according to claim 1, it is characterised in that: described opening tool (54) top is provided with the groove (541) being connected with exhaust passage (3).
Constant pressure type container value the most according to claim 1, it is characterized in that: on described valve body (1), be sealedly connected with closeouts (12), form the cavity (121) can being connected with exhaust passage (3) in this closeouts (12), in described cavity (121), be movably equipped with anti-blocking piece (131).
Constant pressure type container value the most according to claim 7, it is characterised in that: being provided with adjusting plug (13) in described cavity (121), described anti-blocking piece (131) is movably connected in this adjusting plug (13).
Constant pressure type container value the most according to claim 1, it is characterised in that: described valve rod (2) is tightly connected with valve body (1) by V-shaped seal ring (21).
Constant pressure type container value the most according to claim 1, it is characterised in that: described valve body (1) is provided with valve gap (14), and this valve gap (14) is communicated with exhaust passage (3) and extraneous through hole (141).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411847.8A CN106015714B (en) | 2016-06-14 | 2016-06-14 | Constant pressure type container value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411847.8A CN106015714B (en) | 2016-06-14 | 2016-06-14 | Constant pressure type container value |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106015714A true CN106015714A (en) | 2016-10-12 |
| CN106015714B CN106015714B (en) | 2019-10-18 |
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ID=57090405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610411847.8A Active CN106015714B (en) | 2016-06-14 | 2016-06-14 | Constant pressure type container value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015714B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413089A (en) * | 2018-05-29 | 2018-08-17 | 浙江信达可恩消防实业有限责任公司 | A kind of pressure-reduced and-regulated output device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520153A (en) * | 1937-11-16 | 1940-04-16 | Vickers Inc | Improvements in or relating to reducing valves |
| US6615865B1 (en) * | 1999-07-06 | 2003-09-09 | Eusebi Implanti-S.R.L. | Valve for high pressure gas cylinders |
| CN200952591Y (en) * | 2006-04-27 | 2007-09-26 | 上海金盾实业集团有限公司 | Pressure-relief valve and stand-by pressing fire fighting device |
| CN201973293U (en) * | 2011-03-14 | 2011-09-14 | 宁波三安制阀有限公司 | Bottle head valve |
| CN202207417U (en) * | 2011-06-01 | 2012-05-02 | 浙江信达可恩消防实业有限责任公司 | Container valve |
| CN202708279U (en) * | 2012-08-31 | 2013-01-30 | 宁波三安制阀有限公司 | Bottle head valve for fire-fighting equipment |
| CN204170335U (en) * | 2014-09-24 | 2015-02-25 | 广州市佰力消防设备有限公司 | A kind of fire trace tube automatic fire extinguisher container value |
| CN205896356U (en) * | 2016-06-14 | 2017-01-18 | 浙江信达可恩消防实业有限责任公司 | Constant voltage formula container valve |
-
2016
- 2016-06-14 CN CN201610411847.8A patent/CN106015714B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520153A (en) * | 1937-11-16 | 1940-04-16 | Vickers Inc | Improvements in or relating to reducing valves |
| US6615865B1 (en) * | 1999-07-06 | 2003-09-09 | Eusebi Implanti-S.R.L. | Valve for high pressure gas cylinders |
| CN200952591Y (en) * | 2006-04-27 | 2007-09-26 | 上海金盾实业集团有限公司 | Pressure-relief valve and stand-by pressing fire fighting device |
| CN201973293U (en) * | 2011-03-14 | 2011-09-14 | 宁波三安制阀有限公司 | Bottle head valve |
| CN202207417U (en) * | 2011-06-01 | 2012-05-02 | 浙江信达可恩消防实业有限责任公司 | Container valve |
| CN202708279U (en) * | 2012-08-31 | 2013-01-30 | 宁波三安制阀有限公司 | Bottle head valve for fire-fighting equipment |
| CN204170335U (en) * | 2014-09-24 | 2015-02-25 | 广州市佰力消防设备有限公司 | A kind of fire trace tube automatic fire extinguisher container value |
| CN205896356U (en) * | 2016-06-14 | 2017-01-18 | 浙江信达可恩消防实业有限责任公司 | Constant voltage formula container valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413089A (en) * | 2018-05-29 | 2018-08-17 | 浙江信达可恩消防实业有限责任公司 | A kind of pressure-reduced and-regulated output device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106015714B (en) | 2019-10-18 |
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