CN106523747A - Natural gas pressure relief valve - Google Patents
Natural gas pressure relief valve Download PDFInfo
- Publication number
- CN106523747A CN106523747A CN201510573207.2A CN201510573207A CN106523747A CN 106523747 A CN106523747 A CN 106523747A CN 201510573207 A CN201510573207 A CN 201510573207A CN 106523747 A CN106523747 A CN 106523747A
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- China
- Prior art keywords
- valve
- diaphragm
- spring
- natural gas
- valve element
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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
- 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
- F16K17/044—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 more than one spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a natural gas pressure relief valve which comprises a valve body, an inlet pipe, an outlet pipe, an air pressure cavity and a valve element. A membrane is arranged in the air pressure cavity and divides the air pressure cavity into an upper cavity body and a lower cavity body. The valve body is provided with a high-pressure pipe and a lower-pressure pipe. An adjusting bolt is further connected to the valve body in a threaded mode. A first spring is arranged between the thread end and the membrane. A valve element brake mechanism is arranged between the membrane and the valve element, and comprises a first connection rod, a sealing ball and a second spring. The valve body is further provided with a spherical groove attached to the spherical face of the sealing ball. The natural gas pressure relief valve is simple in structure and can be conveniently controlled to be opened. Meanwhile, the operation environment of the membrane is good, so that the natural gas pressure relief valve has the long service life and maintains good pressure relief precision in a long period.
Description
Technical field
The present invention relates to fluid-transferring pipe piece apparatus field, more particularly to a kind of natural gas pressure-reducing valve.
Background technology
Natural gas is one of safer combustion gas, and it does not contain carbon monoxide, lta yet, once leakage, can diffuse up immediately, be difficult accumulation and form explosive gas, security is higher.Using natural gas as the energy, the consumption of coal and oil can be reduced, thus substantially improves problem of environmental pollution；Natural gas can reduce sulfur dioxide and dust discharge amount nearly 100% as a kind of clean energy resource, reduce CO2 emissions 60% and oxynitride discharge amount 50%, and contribute to reduction acid rain being formed, and global greenhouse effect of releiving fundamentally improves environmental quality., compared with artificial coal gas, with specific heat of combustion price quite, and natural gas cleaning is clean, can extend the service life of kitchen range, is also beneficial to the expenditure that user reduces maintenance cost for economical and practical natural gas.The advantage of above natural gas causes natural gas as industry and domestic gas fuel, and with unit calorific value height, exhaust pollution is little, supply is reliable, the low advantage of price, it has also become the developing direction of world's clean fuel.
The transport of natural gas typically adopts pressure pipeline and transportation tank car, from collection, transport to user using generally require which is carried out pressurize, decompression operation, natural gas pressure-reducing valve is used as the visual plant in decompression process, the versions such as piston type and diaphragm type have had been developed, simultaneously, diaphragm type pressure-reducing valve again with sensitivity it is high the characteristics of, be widely used in larger gas stove stokehold natural gas depressurization.Further optimize the structure of diaphragm type pressure-reducing valve, be undoubtedly conducive to further optimizing the utilization for promoting natural gas.
The content of the invention
For above-mentioned diaphragm type pressure-reducing valve again with sensitivity it is high the characteristics of, be widely used in larger gas stove stokehold natural gas depressurization.Further optimize the structure of diaphragm type pressure-reducing valve, be undoubtedly conducive to further optimizing the problem of the utilization for promoting natural gas, the invention provides a kind of natural gas pressure-reducing valve.
For the problems referred to above, a kind of natural gas pressure-reducing valve that the present invention is provided reaches goal of the invention by following technical essential：A kind of natural gas pressure-reducing valve，Including valve body，Inlet tube is provided with the valve body、Outlet and atmospheric pressure cavity，The inlet tube is connected by valve element with outlet，Diaphragm is additionally provided with the atmospheric pressure cavity，Atmospheric pressure cavity is divided into upper cavity and lower chamber by the diaphragm，And on valve body, it is additionally provided with high-voltage tube and low-voltage tube，The high-voltage tube realizes the gas circuit connection of inlet tube and lower chamber，The low-voltage tube realizes that outlet is connected with the gas circuit of upper cavity，Regulating bolt is threaded with the valve body also，The end of thread of the regulating bolt is stretched in upper cavity，And between the end of thread and diaphragm, it is additionally provided with the first spring，Valve element arrestment mechanism is additionally provided between the diaphragm and valve element，The valve element arrestment mechanism includes first connecting rod、Ball sealer and second spring，Diaphragm is fixed on the side in lower chamber in one end of the first connecting rod，Ball sealer is fixed on the other end of first connecting rod，The two ends of second spring are individually fixed on ball sealer and valve element，And on valve body, it is additionally provided with the ball recess fitted with ball sealer sphere，A part of the ball recess for high-voltage tube，And ball sealer is located between ball recess and high-voltage tube arrival end；
The elastic deformation direction of deformation direction, the first spring and second spring when the opening and closing direction of the valve element, diaphragm are pressurized, the axis direction of regulating bolt are parallel to each other.
Specifically, above atmospheric pressure cavity, the structures such as diaphragm constitute the secondary valve of this pressure-reducing valve, in the present invention, gas before being reduced pressure by high-voltage tube in inlet tube is introduced in lower chamber, gas after low-voltage tube is introduced into decompression from outlet is into upper cavity, before reducing pressure above, two kinds of gases after decompression, the elastic force of the first spring is acted on diaphragm, before decompression, when there is particular pressure differential in decompression latter two gas, the elastic force of comprehensive first spring, so that diaphragm reaches stable elastic deformation amount, above elastic deformation amount passes through first connecting rod, the transmission of ball sealer and second spring is acted on to valve element, realize the regulation of valve element aperture, the purpose of the structure pressure-reducing of present invention offer is provided, and the decrement that can adjust the first spring by regulating bolt that adjusts of the outlet pressure that reduces pressure is realized.
In this structure, realize that by the ball sealer for arranging the on off operating mode of high-voltage tube is adjusted, be easy to the regulation of working condition of the present invention：As ball sealer and the first spring are located at the not homonymy of diaphragm, so needing by compressing the first spring, the mode of regulating bolt is screwed in i.e. in upper cavity, so that after ball sealer is departed from ball recess, pressure medium after reducing pressure before and after decompression just can be injected separately into in lower chamber and upper cavity, therefore the present invention has the advantages that on off state is conveniently adjusted；Simultaneously, not using the such as version such as spiracle, pressure release escape orifice in the present invention, therefore can ensure that gas-tight, diaphragm long-term disposal in the course of the work of the invention are clean, be difficult to be enriched with the environment of steam, i.e., the present invention also has the advantages that long service life, can ensure the precision that reduces pressure for a long time.
Further technical scheme is：
For each action component stressing conditions in use in the optimization present invention, the stress of each point on i.e. uniform all parts section, avoid or reduce each friction occurring with valve body and the life-span of the invention is affected, produce unnecessary noise etc., the valve element constitutes stop valve current limliting form with inlet tube and outlet three, the diaphragm is in annular shape, the first connecting rod is in shaft-like, and the axis collinear of valve element, diaphragm, the first spring, second spring and first connecting rod.
It is easy to manufacture, is conducive to reducing the version of volume of the present invention as a kind of, the high-voltage tube is a straight length, and the first connecting rod and ball sealer are located fully or partially in high-voltage tube.
Working condition or the decompression parameter of the present invention is affected for ease of preventing the non-artificial rotation of regulating bolt, be also threaded with lock nut in the regulating bolt.
Used as the good technical scheme of static seal effect under a kind of corrosion-resistant, low pressure, the ball sealer is the ball that material is fluorubber.
As a kind of version to valve core movement direction with guide function, to avoid valve element from excessive moment of flexure being produced to second spring during vibrations, be also associated with second connecting rod, be additionally provided with the hole coordinated with second connecting rod gap on the valve body on the valve element.
The invention has the advantages that：
1st, present configuration is simple, realizes that by the ball sealer for arranging the on off operating mode of high-voltage tube is adjusted, is easy to the regulation of working condition of the present invention：As ball sealer and the first spring are located at the not homonymy of diaphragm, so needing by compressing the first spring, the mode of regulating bolt is screwed in i.e. in upper cavity, so that after ball sealer is departed from ball recess, pressure medium after reducing pressure before and after decompression just can be injected separately into in lower chamber and upper cavity, therefore the present invention has the advantages that on off state is conveniently adjusted.
2nd, not using the such as version such as spiracle, pressure release escape orifice in the present invention, therefore can ensure that gas-tight, diaphragm long-term disposal in the course of the work of the invention are clean, be difficult to be enriched with the environment of steam, i.e., the present invention also has the advantages that long service life, can ensure the precision that reduces pressure for a long time.
Description of the drawings
Fig. 1 is a kind of structural representation of one specific embodiment of natural gas pressure-reducing valve of the present invention.
Label shown in accompanying drawing is respectively：1st, the first spring, 2, diaphragm, 3, high-voltage tube, 4, valve element, 5, inlet tube, 6, regulating bolt, 7, first connecting rod, 71, ball sealer, 8, second spring, 9, valve body, 10, outlet, 11, second connecting rod, 12, atmospheric pressure cavity, 13, low-voltage tube.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but the structure of the present invention is not limited only to following examples.
Embodiment 1：
As shown in Figure 1，A kind of natural gas pressure-reducing valve，Including valve body 9，Inlet tube 5 is provided with the valve body 9、Outlet 10 and atmospheric pressure cavity 12，The inlet tube 5 is connected by valve element 4 with outlet 10，Diaphragm 2 is additionally provided with the atmospheric pressure cavity 12，Atmospheric pressure cavity 12 is divided into upper cavity and lower chamber by the diaphragm 2，And on valve body 9, it is additionally provided with high-voltage tube 3 and low-voltage tube 13，The high-voltage tube 3 realizes the gas circuit connection of inlet tube 5 and lower chamber，The low-voltage tube 13 realizes that outlet 10 is connected with the gas circuit of upper cavity，Regulating bolt 6 is threaded with the valve body 9 also，The end of thread of the regulating bolt 6 is stretched in upper cavity，And between the end of thread and diaphragm 2, it is additionally provided with the first spring 1，Valve element arrestment mechanism is additionally provided between the diaphragm 2 and valve element 4，The valve element arrestment mechanism includes first connecting rod 7、Ball sealer 71 and second spring 8，Diaphragm 2 is fixed on the side in lower chamber in one end of the first connecting rod 7，Ball sealer 71 is fixed on the other end of first connecting rod 7，The two ends of second spring 8 are individually fixed on ball sealer 71 and valve element 4，And on valve body 9, it is additionally provided with the ball recess fitted with 71 sphere of ball sealer，A part of the ball recess for high-voltage tube 3，And ball sealer 71 is located between 3 arrival end of ball recess and high-voltage tube；
Deformation direction, the elastic deformation direction of the first spring 1 and second spring 8 when the opening and closing direction of the valve element 4, diaphragm 2 are pressurized, the axis direction of regulating bolt 6 are parallel to each other.
Specifically，Above atmospheric pressure cavity 12、The structures such as diaphragm 2 constitute the secondary valve of this pressure-reducing valve，In the present invention，Gas before being reduced pressure by high-voltage tube 3 in inlet tube 5 is introduced in lower chamber，Gas after low-voltage tube 13 is introduced into decompression from outlet 10 is into upper cavity，Before reducing pressure above、Two kinds of gases after decompression、The elastic force of the first spring 1 is acted on diaphragm 2，Before decompression、When there is particular pressure differential in decompression latter two gas，The elastic force of comprehensive first spring 1，So that diaphragm 2 reaches stable elastic deformation amount，Above elastic deformation amount passes through first connecting rod 7、The transmission of ball sealer 71 and second spring 8 is acted on to valve element 4，Realize the regulation of 4 aperture of valve element，The purpose of the structure pressure-reducing of present invention offer is provided，And the decrement that can adjust the first spring 1 by regulating bolt 6 that adjusts of the outlet pressure that reduces pressure is realized.
In the present embodiment, realize that by the ball sealer 71 for arranging the on off operating mode of high-voltage tube 3 is adjusted, be easy to the regulation of working condition of the present invention：As ball sealer 71 and the first spring 1 are located at the not homonymy of diaphragm 2, so needing by compressing the first spring 1, the mode of regulating bolt 6 is screwed in i.e. in upper cavity, so that after ball sealer 71 is departed from ball recess, pressure medium after reducing pressure before and after decompression just can be injected separately into in lower chamber and upper cavity, therefore the present invention has the advantages that on off state is conveniently adjusted；Simultaneously, not using the such as version such as spiracle, pressure release escape orifice in the present invention, therefore can ensure that gas-tight, 2 long-term disposal of diaphragm in the course of the work of the invention are clean, be difficult to be enriched with the environment of steam, i.e., the present invention also has the advantages that long service life, can ensure the precision that reduces pressure for a long time.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for each action component stressing conditions in use in the optimization present invention, the stress of each point on i.e. uniform all parts section, avoid or reduce and each friction occurs with valve body 9 and the life-span of the present invention is affected, produce unnecessary noise etc., the valve element 4 constitutes stop valve current limliting form with inlet tube 5 and 10 three of outlet, the diaphragm 2 is in annular shape, the first connecting rod 7 is in shaft-like, and valve element 4, diaphragm 2, first spring 1, the axis collinear of second spring 8 and first connecting rod 7 five.
It is easy to manufacture, is conducive to reducing the version of volume of the present invention as a kind of, the high-voltage tube 3 is a straight length, and the first connecting rod 7 and ball sealer 71 are located fully or partially in high-voltage tube 3.
Working condition or the decompression parameter of the present invention is affected for ease of preventing the non-artificial rotation of regulating bolt 6, be also threaded with lock nut in the regulating bolt 6.
Used as the good technical scheme of static seal effect under a kind of corrosion-resistant, low pressure, the ball sealer 71 is the ball that material is fluorubber.
Embodiment 3：
The present embodiment is further qualified on the basis of any one technical scheme disclosed in any of the above one embodiment, as a kind of version to 4 direction of motion of valve element with guide function, to avoid valve element 4 from producing excessive moment of flexure to second spring 8 during vibrations, second connecting rod 11 is also associated with the valve element 4, is additionally provided with the hole coordinated with 11 gap of second connecting rod on the valve body 9.
Above content is the further description made to the present invention with reference to specific preferred embodiment, it is impossible to assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, the other embodiment drawn under without departing from technical scheme is should be included in protection scope of the present invention.
Claims (6)
1. a kind of natural gas pressure-reducing valve, including valve body（9）, the valve body（9）On be provided with inlet tube（5）, outlet（10）And atmospheric pressure cavity（12）, the inlet tube（5）And outlet（10）By valve element（4）It is connected, the atmospheric pressure cavity（12）In be additionally provided with diaphragm（2）, the diaphragm（2）By atmospheric pressure cavity（12）It is divided into upper cavity and lower chamber, and valve body（9）On be additionally provided with high-voltage tube（3）And low-voltage tube（13）, the high-voltage tube（3）Realize inlet tube（5）Connect with the gas circuit of lower chamber, the low-voltage tube（13）Realize outlet（10）It is connected with the gas circuit of upper cavity, the valve body（9）On be also threaded with regulating bolt（6）, the regulating bolt（6）The end of thread stretch in upper cavity, and the end of thread and diaphragm（2）Between be additionally provided with the first spring（1）, the diaphragm（2）With valve element（4）Between be additionally provided with valve element arrestment mechanism, it is characterised in that the valve element arrestment mechanism includes first connecting rod（7）, ball sealer（71）And second spring（8）, the first connecting rod（7）One end be fixed on diaphragm（2）On the side in lower chamber, ball sealer（71）It is fixed on first connecting rod（7）The other end, second spring（8）Two ends be individually fixed in ball sealer（71）And valve element（4）On, and valve body（9）On be additionally provided with and ball sealer（71）The ball recess of sphere laminating, the ball recess are high-voltage tube（3）A part, and ball sealer（71）Positioned at ball recess and high-voltage tube（3）Between arrival end；
The valve element（4）Opening and closing direction, diaphragm（2）Deformation direction, the first spring when pressurized（1）And second spring（8）Elastic deformation direction, regulating bolt（6）Axis direction be parallel to each other.
2. a kind of natural gas pressure-reducing valve according to claim 1, it is characterised in that the valve element（4）With inlet tube（5）And outlet（10）Three constitutes stop valve current limliting form, the diaphragm（2）In annular shape, the first connecting rod（7）In shaft-like, and valve element（4）, diaphragm（2）, the first spring（1）, second spring（8）And first connecting rod（7）Five axis collinear.
3. a kind of natural gas pressure-reducing valve according to claim 1, it is characterised in that the high-voltage tube（3）For a straight length, the first connecting rod（7）And ball sealer（71）High-voltage tube is located fully or partially at（3）In.
4. a kind of natural gas pressure-reducing valve according to claim 1, it is characterised in that the regulating bolt（6）On be also threaded with lock nut.
5. a kind of natural gas pressure-reducing valve according to claim 1, it is characterised in that the ball sealer（71）For the ball that material is fluorubber.
6. a kind of natural gas pressure-reducing valve as claimed in any of claims 1 to 5, it is characterised in that the valve element（4）On be also associated with second connecting rod（11）, the valve body（9）On be additionally provided with and second connecting rod（11）The hole that gap coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510573207.2A CN106523747A (en) | 2015-09-10 | 2015-09-10 | Natural gas pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510573207.2A CN106523747A (en) | 2015-09-10 | 2015-09-10 | Natural gas pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523747A true CN106523747A (en) | 2017-03-22 |
Family
ID=58345792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510573207.2A Pending CN106523747A (en) | 2015-09-10 | 2015-09-10 | Natural gas pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523747A (en) |
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2015
- 2015-09-10 CN CN201510573207.2A patent/CN106523747A/en active Pending
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |