CN107763261A - A kind of self-closing gas pressure reducer of achievable failure - Google Patents
A kind of self-closing gas pressure reducer of achievable failure Download PDFInfo
- Publication number
- CN107763261A CN107763261A CN201610678895.3A CN201610678895A CN107763261A CN 107763261 A CN107763261 A CN 107763261A CN 201610678895 A CN201610678895 A CN 201610678895A CN 107763261 A CN107763261 A CN 107763261A
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- China
- Prior art keywords
- decompression
- feedback channel
- channel
- pressure
- pressure regulating
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- 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
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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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
-
- 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
- F16K17/06—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 with special arrangements for adjusting the opening pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of achievable self-closing gas pressure reducer of failure, including valve body, inlet channel, outlet passageway, spiracle and feedback channel are provided with valve body, decompression portion is provided between inlet channel and outlet passageway, pressure-regulating portion is provided between spiracle and feedback channel, pressure regulating screw is connected with valve body, pressure regulating seat is additionally provided with feedback channel；Decompression portion includes decompression valve element and decompression valve seat, decompression valve seat is that outside is provided with externally threaded cylindrical-shaped structure, and decompression valve seat is threaded in inlet channel, decompression valve element is located in outlet passageway, and it is respectively arranged with the tapered groove in section and projection, raised face groove on decompression valve seat and decompression valve element；Leak stopping portion is connected with inlet channel, leak stopping portion includes air inlet pipe, baffle plate, steel ball, ball recess is provided with baffle plate.Effect of easing stress controllability of the invention is good, operation expense is low, failture evacuation is convenient, excessively stream can be achieved blocks certainly.
Description
Technical field
The present invention relates to compressed gas decompressor field, subtracts more particularly to a kind of achievable self-closing gas of failure
Pressure valve.
Background technology
As natural gas is with more and more extensive, various forms of pressure-reducing valves emerge in an endless stream, to natural gas depressurization valve arrangement
Further optimization will further promote natural gas utilization.By taking environmental consciousness as an example, natural gas is used for the combustion of vehicle motor
Material can greatly reduce Vehicular exhaust pollution, but in order to improve the single aeration stroke using natural gas as the vehicle of fuel, on vehicle
Gas cylinder is provided with to be used to house natural gas, and the gas pressure for being finally introducing cylinder is generally several kPas,
So, the pressure-reducing valve depressurized to high-pressure natural gas is particularly important, while in practice, above decompression valve performance
Stability be also intuitively reacted on the power of vehicle even in traffic safety.
In the process of moving, gas pressure can be reduced gradually gas combustion automobile in its gas cylinder, so, for what is stablized
Low pressure natural gas exports or the output of different engine powers, will necessarily frequently phase between the decompression valve element and valve seat of pressure-reducing valve
To moving to adjust the pressure of output gas, and the gas passage air-flow being depressured above between valve element and valve seat is very fast, either
The friction washed away or be depressured between valve element and valve seat of impurity, can cause pressure-reducing valve degradation, or even impurity in gas circuit
Decompression valve element and valve seat closure are influenceed, so, the gas pressure in cylinder in the state of vehicle disables for a long time will slowly rise
Height, igniting or other engine failure, the further optimization to gas pressure reducer valve core structure is caused to be particularly important.
The content of the invention
The problem of being particularly important for the above-mentioned existing further optimization to gas pressure reducer valve core structure, this hair
It is bright to provide a kind of self-closing gas pressure reducer of achievable failure.
To solve the above problems, a kind of achievable self-closing gas pressure reducer of failure provided by the invention passes through following skill
Art main points solve problem：A kind of self-closing gas pressure reducer of achievable failure, including valve body, be provided with the valve body into
Gas passage, outlet passageway, spiracle and feedback channel, decompression portion is provided between the inlet channel and outlet passageway, breathed
Be provided with pressure-regulating portion between hole and feedback channel, the arrival end and the port of export of feedback channel respectively with inlet channel and outlet passageway
Communicate, pressure regulating screw is also threaded with the valve body, one end of the pressure regulating screw is stretched into feedback channel, and pressure regulation spiral shell
The end for following closely the one end for stretching into feedback channel is taper, and the pressure regulation coordinated with feedback channel gap is additionally provided with feedback channel
Seat, the pressure regulating seat are that hollow, end set has the adjusting pressuring valve core of taper, side wall to be provided with air inlet and the column knot of gas outlet
Structure, pressure regulating screw stretch into one end face adjusting pressuring valve core of feedback channel；
The decompression portion includes decompression valve element and decompression valve seat, and the decompression valve seat is that outside is provided with externally threaded cylindric knot
Structure, and be depressured valve seat and be threaded in inlet channel, decompression valve element is located in outlet passageway, and is depressured valve seat and decompression valve element
On be respectively arranged with the tapered groove in section and projection, groove described in the raised face；
Leak stopping portion is connected with the inlet channel, the leak stopping portion includes being connected on valve body and what is communicated with inlet channel enters
Tracheae, the baffle plate being arranged on air inlet inside pipe wall, the steel ball in air inlet pipe, it is straight with steel ball that diameter is provided with the baffle plate
The equal ball recess in footpath.
Specifically, the pressure regulating screw set, pressure regulating seat are pressure-regulating portion, source of the gas is introduced by inlet channel, by dropping valve
Gap between the groove and projection that are set respectively on core and decompression valve seat, which enters, completes decompression in outlet passageway；What is set is anti-
In feedthrough road, the entrance of feedback channel is communicated with inlet channel, and gases at high pressure are just introduced into pressure regulating seat, and feedback channel goes out
In mouth end and spiracle, preferably the port of export of feedback channel is arranged between pressure regulating seat and pressure regulating screw before gas channel
End, i.e., the arrival end of feedback channel is connected by the air inlet on pressure regulating seat with gas outlet respectively with the port of export, and spiracle is set
In the rear end of the gas channel, i.e., after adjusting pressuring valve core, O-ring is arranged between the air inlet of pressure regulating seat and gas outlet, this
Sample, the gap adjustment between pressure regulating seat and pressure regulating screw are passed into the size of air-flow in spiracle, so, feedback channel rear end
Pressure forces decompression valve element to be moved away from or towards decompression valve seat, reaches air-flow size between adjustment decompression valve element and decompression valve seat
Purpose, so, be easy to obtain gas pressure size after different decompressions；Ball recess on the steel ball and baffle plate of setting is used for
The present invention is cut off when flow is larger to inlet channel:In specific use, the valve rear end of pressure-reducing valve is generally set with gas
Standby, the operating mode of gas equipment is complicated compared with pressure-reducing valve front end pipeline operating mode, vibrations, the pressure of rear end pipeline frequent fluctuation such as its own
Power, gas equipment failure etc. may cause rear end pipeline or gas equipment failure, and the steel ball of setting is located at spherical on baffle plate
The front end of groove, when the failure of pressure-reducing valve back-end sealing, decompression portion or equipment fault produce, if the flow of inlet channel increases suddenly
Greatly, for steel ball towards baffle plate lateral movement under the washing away of air-flow, last steel ball, which is fallen into, blocks air inlet pipe in ball recess, realizes failure certainly
Stop function.
In this programme, be threadedly coupled due to coordinating, being depressured valve seat with feedback channel gap using pressure regulating seat with inlet channel,
The structure type that pressure regulating screw is connected with valve body screw thread so that be used for pressure regulation in the present invention and the valve element depressurized can easily and valve
Body separates, and is easy to the examination and maintenance of two above valve element, may be such that the effect of easing stress of the present invention is controllable, operation expense
Low, failture evacuation is conveniently.
The outer surface of steel ball or the surface of ball recess are preferably provided with rubber sealant, to lift failure self closing of the present invention
To the cut-out performance of air inlet pipe under operating mode.
As the preferred scheme of the present invention, screen pack is set on inlet channel, and the screen pack is located at feedback channel
The front end of arrival end, to isolate the impurity in gases at high pressure, reduce influence of the impurity to both the above valve element and beneficial to follow-up low
The quality calmed the anger, sets gs-oil separator on outlet passageway, to remove the water separated out after decompression or oil.
Further technical scheme is：
Change the sensitivity perceived to air-flow in air inlet pipe for lifting steel ball, that is, cause whole air-flows of air inlet pipe in flow process
In can wash away to steel ball, deflector, the deflector, steel ball and baffle plate position are additionally provided with the inwall of the air inlet pipe
In in same section straight length, and steel ball is between deflector and baffle plate.
For ease of reduce the present invention volume, beneficial to the present invention processing, reduce valve body on sealing surface quantity, it is described go out
Gas passage, inlet channel, feedback channel and spiracle are by least one section of straight hole section composition.Above structure is easy to set valve body
For an entirety, inlet channel, outlet passageway, feedback channel and spiracle are processed by the form of drilling, led to upper air
Road, outlet passageway, the openend of feedback channel and spiracle can be subject to by the structure type of pipe screw thread screw fit sealing gasket
Sealing.
For lifted it is described decompression valve element feedback response speed, buffering decompression valve element be depressured valve seat collision, it is described go out
It is additionally provided with both ends in gas passage to be respectively acting on outlet passageway wall and be depressured the spring of valve element, the spring, decompression valve element
It is respectively positioned on decompression valve seat in same straight hole section.Further, diaphragm, spring and rolling valve element can be set on decompression valve element
On diaphragm interaction, the diaphragm and outlet passageway inner wall sealing, arrangement above is easy to improve decompression valve element logical by feedback
The precision of road gas pressure.
To prevent the non-artificial rotation of the pressure regulating screw, the outlet pressure of the present invention is influenceed, is also set on the pressure regulating screw
It is equipped with the elastic component that both ends are respectively acting on pressure regulating screw and valve body.
Because spring can deform compared to other elastic components in the larger context, to cause pressure regulating screw in pressure regulation
Elastic component all has active force to pressure regulating screw all the time in journey, and the elastic component is compression spring.
The invention has the advantages that：
1st, the present invention is simple in construction, due to being coordinated using pressure regulating seat with feedback channel gap, being depressured valve seat and inlet channel screw thread
The structure type of connection, pressure regulating screw and valve body screw thread connection so that being used for the valve element of pressure regulation and decompression in the present invention can facilitate
Separated with valve body, be easy to the examination and maintenance of two above valve element, may be such that the present invention effect of easing stress controllability it is good, operation
Maintenance cost is low, failture evacuation is convenient.
2nd, the ball recess on the steel ball and baffle plate set is cut for the present invention when flow is larger to inlet channel
It is disconnected:In specific use, the valve rear end of pressure-reducing valve is generally gas equipment, and the operating mode of gas equipment is compared with pressure-reducing valve front end club man
Condition is complicated, and such as the vibrations of its own, the pressure of rear end pipeline frequent fluctuation, gas equipment failure may cause rear end pipeline
Or gas equipment failure, the steel ball of setting are located at the front end of the ball recess on baffle plate, in the failure of pressure-reducing valve back-end sealing, decompression
When portion or equipment fault produce, if the flow of inlet channel increases suddenly, steel ball under the washing away of air-flow towards baffle plate lateral movement, most
Steel ball falls into and air inlet pipe is blocked in ball recess afterwards, realizes that the present invention also has failure from the function that stops.
Brief description of the drawings
Fig. 1 is a kind of structure of achievable self-closing one specific embodiment of gas pressure reducer of failure of the present invention
Schematic diagram.
Scheming acceptance of the bid note is respectively：1st, spiracle, 2, adjusting pressuring valve core, 3, sealing gasket, 4, pressure regulating seat, 5, feedback channel, 6, valve
Body, 7, decompression valve element, 8, decompression valve seat, 9, inlet channel, 10, outlet passageway, 11, pressure regulating screw, 12, elastic component, 13, air inlet
Pipe, 14, baffle plate, 15, steel ball, 16, deflector.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the present invention structure be not limited only to it is following
Embodiment：
Embodiment 1：
As shown in figure 1, a kind of self-closing gas pressure reducer of achievable failure, including valve body 6, be provided with the valve body 6 into
Gas passage 9, outlet passageway 10, spiracle 1 and feedback channel 5, decompression is provided between the inlet channel 9 and outlet passageway 10
Portion, is provided with pressure-regulating portion between spiracle 1 and feedback channel 5, the arrival end and the port of export of feedback channel 5 respectively with inlet channel
9 and outlet passageway 10 communicate, pressure regulating screw 11 is also threaded with the valve body 6, one end of the pressure regulating screw 11 is stretched into
In feedback channel 5, and it is taper that pressure regulating screw 11, which stretches into the end of one end of feedback channel 5, be additionally provided with feedback channel 5 with
The pressure regulating seat 4 that the gap of feedback channel 5 coordinates, the pressure regulating seat 4 are that hollow, end set has the adjusting pressuring valve core 2 of taper, side wall to set
Air inlet and the column structure of gas outlet are equipped with, pressure regulating screw 11 stretches into one end face adjusting pressuring valve core 2 of feedback channel 5；
The decompression portion includes decompression valve element 7 and decompression valve seat 8, and the decompression valve seat 8 is that outside is provided with externally threaded cylinder
Shape structure, and be depressured valve seat 8 and be threaded in inlet channel 9, decompression valve element 7 is located in outlet passageway 10, and is depressured valve seat 8
The tapered groove in section and projection, groove described in the raised face are respectively arranged with decompression valve element 7；
Leak stopping portion is connected with the inlet channel 9, the leak stopping portion includes being connected on valve body 6 and communicating with inlet channel 9
Air inlet pipe 13, the baffle plate 14, the steel ball 15 in air inlet pipe 13 that are arranged on the inwall of air inlet pipe 13, set on the baffle plate 14
It is equipped with the diameter ball recess equal with the diameter of steel ball 15.
In the present embodiment, pressure regulating screw 11, the pressure regulating seat 4 of setting are pressure-regulating portion, and source of the gas is introduced by inlet channel 9, is passed through
The gap crossed on decompression valve element 7 and decompression valve seat 8 between the groove set respectively and projection, which is entered in outlet passageway 10, completes
Decompression；In the feedback channel 5 of setting, the entrance of feedback channel 5 communicates with inlet channel 9, and gases at high pressure are just introduced into pressure regulation
In seat 4, in the port of export and spiracle 1 of feedback channel 5, the port of export of feedback channel 5 is preferably arranged on pressure regulating seat 4 and pressure regulation
The front end of gas channel between screw 11, spiracle 1 are arranged on the rear end of the gas channel, so, pressure regulating seat 4 and pressure regulation spiral shell
Gap adjustment between nail 11 is passed into the size of air-flow in spiracle 1, and so, the pressure of the rear end of feedback channel 5 forces decompression
Valve element 7 moves away from or towards decompression valve seat 8, reaches adjustment decompression valve element 7 and is depressured the purpose of air-flow size between valve seat 8,
So, it is easy to obtain gas pressure size after different decompressions；Ball recess on the steel ball 15 and baffle plate 14 of setting is used for this
Invention is cut off when flow is larger to inlet channel 9:In specific use, the valve rear end of pressure-reducing valve is generally set with gas
Standby, the operating mode of gas equipment is complicated compared with pressure-reducing valve front end pipeline operating mode, vibrations, the pressure of rear end pipeline frequent fluctuation such as its own
Power, gas equipment failure etc. may cause rear end pipeline or gas equipment failure, and the steel ball 15 of setting is located on baffle plate 14
The front end of ball recess, when the failure of pressure-reducing valve back-end sealing, decompression portion or equipment fault produce, if the flow of inlet channel 9
Increase suddenly, for steel ball towards baffle plate lateral movement under the washing away of air-flow, last steel ball 15 falls into blocking air inlet pipe 13 in ball recess,
Realize failure from the function that stops.
In this programme, due to being coordinated using pressure regulating seat 4 with the gap of feedback channel 5, being depressured valve seat 8 and the screw thread of inlet channel 9
The structure type that connection, pressure regulating screw 11 are threadedly coupled with valve body 6 so that the valve element for being used for pressure regulation and decompression in the present invention can be square
Being separated with valve body 6 just, is easy to the examination and maintenance of two above valve element, may be such that the effect of easing stress of the present invention is controllable, operation
Maintenance cost is low, failture evacuation is convenient.
As the preferred scheme of the present invention, screen pack is set on inlet channel 9, and the screen pack is located at feedback channel
The front end of 5 arrival ends, to isolate the impurity in gases at high pressure, reduce influence of the impurity to both the above valve element and beneficial to follow-up low
The quality calmed the anger, gs-oil separator is set on outlet passageway 10, to remove the water separated out after decompression or oil.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in figure 1, for ease of reducing the volume of the present invention, profit
In the processing of the present invention, reduce the quantity of sealing surface on valve body 6, the outlet passageway 10, inlet channel 9, feedback channel 5 and exhale
Sucker 1 is by least one section of straight hole section composition.Above structure is easy to valve body 6 being arranged to an entirety, passes through the form of drilling
Inlet channel 9, outlet passageway 10, feedback channel 5 and spiracle 1 are processed, above inlet channel 9, outlet passageway 10, feedback are logical
Road 5 and the openend of spiracle 1 can be sealed by the structure type of pipe screw thread screw fit sealing gasket 3.
To lift the feedback response speed of the decompression valve element 7, collision of the buffering decompression valve element 7 with being depressured valve seat 8 is described
Both ends are additionally provided with outlet passageway 10 to be respectively acting on the wall of outlet passageway 10 and be depressured the spring of valve element 7, the spring, drop
Pressure valve core 7 and decompression valve seat 8 are respectively positioned in same straight hole section.Further, diaphragm, spring can be set on decompression valve element 7
Interacted with the diaphragm on rolling valve element, the diaphragm and the inner wall sealing of outlet passageway 10, arrangement above, which is easy to improve, to be depressured
Precision of the valve element 7 by the gas pressure of feedback channel 5.
The sensitivity perceived is changed to air-flow in air inlet pipe 13 for lifting steel ball 15, that is, causes whole air-flows of air inlet pipe 13
It can be washed away to steel ball 15 in flow process, deflector 16 is additionally provided with the inwall of the air inlet pipe 13, it is described to lead
Flowing plate 16, steel ball 15 and baffle plate 14 are located at in section straight length, and steel ball 15 is between deflector 16 and baffle plate 14.
, can using air inlet pipe 13 and valve body 6 for ease of changing the steel ball 15 of different quality according to gas consumption in the present embodiment
Tear connection or deflector 16 and the structure type of the releasable connection of air inlet pipe 13 open.
Embodiment 3：
The present embodiment is further qualified on the basis of embodiment 1, as shown in figure 1, to prevent that the pressure regulating screw 11 is inhuman
To rotate, the outlet pressure of the present invention is influenceed, being additionally provided with both ends on the pressure regulating screw 11 is respectively acting on pressure regulating screw 11
With the elastic component 12 of valve body 6.
Because spring can deform compared to other elastic components 12 in the larger context, to cause pressure regulating screw 11 adjusting
Press through elastic component 12 in journey all has active force to pressure regulating screw 11 all the time, and the elastic component 12 is compression spring.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to assert this
The embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention,
The other embodiment drawn in the case where not departing from technical scheme, should be included within the scope of the present invention.
Claims (6)
1. a kind of self-closing gas pressure reducer of achievable failure, including valve body（6）, the valve body（6）On be provided with air inlet and lead to
Road（9）, outlet passageway（10）, spiracle（1）And feedback channel（5）, the inlet channel（9）And outlet passageway（10）Between set
It is equipped with decompression portion, spiracle（1）And feedback channel（5）Between be provided with pressure-regulating portion, feedback channel（5）Arrival end and the port of export
Respectively with inlet channel（9）And outlet passageway（10）Communicate, it is characterised in that the valve body（6）On be also threaded with pressure regulation
Screw（11）, the pressure regulating screw（11）One end stretch into feedback channel（5）It is interior, and pressure regulating screw（11）Stretch into feedback channel
（5）The end of one end be taper, feedback channel（11）In be additionally provided with and feedback channel（11）The pressure regulating seat that gap coordinates
（4）, the pressure regulating seat（4）There is the adjusting pressuring valve core of taper for hollow, end set（2）, side wall be provided with air inlet and gas outlet
Column structure, pressure regulating screw（11）Stretch into feedback channel（5）One end face adjusting pressuring valve core（2）；
The decompression portion includes decompression valve element（7）With decompression valve seat（8）, the decompression valve seat（8）Outside is provided with external screw thread
Cylindrical-shaped structure, and be depressured valve seat（8）It is threaded in inlet channel（9）In, it is depressured valve element（7）Positioned at outlet passageway（10）
It is interior, and it is depressured valve seat（8）With decompression valve element（7）On be respectively arranged with the tapered groove in section and projection, the raised face
The groove；
The inlet channel（9）On be connected with leak stopping portion, the leak stopping portion includes being connected to valve body（6）Upper and and inlet channel
（9）The air inlet pipe communicated（13）, be arranged on air inlet pipe（13）Baffle plate on inwall（14）, positioned at air inlet pipe（13）Interior steel ball
（15）, the baffle plate（14）On be provided with diameter and steel ball（15）The equal ball recess of diameter.
A kind of 2. achievable self-closing gas pressure reducer of failure according to claim 1, it is characterised in that the air inlet
Pipe（13）Inwall on be additionally provided with deflector（16）, the deflector（16）, steel ball（15）And baffle plate（14）It is straight positioned at same section
In pipeline section, and steel ball（15）Positioned at deflector（16）With baffle plate（14）Between.
A kind of 3. achievable self-closing gas pressure reducer of failure according to claim 1, it is characterised in that the outlet
Passage（10）, inlet channel（9）, feedback channel（5）And spiracle（1）By at least one section of straight hole section composition.
A kind of 4. achievable self-closing gas pressure reducer of failure according to claim 3, it is characterised in that the outlet
Passage（10）Inside it is additionally provided with both ends and is respectively acting on outlet passageway（10）Wall and decompression valve element（7）Spring, the spring,
It is depressured valve element（7）With decompression valve seat（8）It is respectively positioned in same straight hole section.
A kind of 5. achievable self-closing gas pressure reducer of failure according to claim 1, it is characterised in that the pressure regulation
Screw（11）On be additionally provided with both ends and be respectively acting on pressure regulating screw（11）And valve body（6）Elastic component（12）.
A kind of 6. achievable self-closing gas pressure reducer of failure according to claim 5, it is characterised in that the elasticity
Part（12）For compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678895.3A CN107763261A (en) | 2016-08-17 | 2016-08-17 | A kind of self-closing gas pressure reducer of achievable failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678895.3A CN107763261A (en) | 2016-08-17 | 2016-08-17 | A kind of self-closing gas pressure reducer of achievable failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763261A true CN107763261A (en) | 2018-03-06 |
Family
ID=61260379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678895.3A Withdrawn CN107763261A (en) | 2016-08-17 | 2016-08-17 | A kind of self-closing gas pressure reducer of achievable failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763261A (en) |
-
2016
- 2016-08-17 CN CN201610678895.3A patent/CN107763261A/en not_active Withdrawn
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Application publication date: 20180306 |