CN106555894A - A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy - Google Patents

A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy Download PDF

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Publication number
CN106555894A
CN106555894A CN201510625954.6A CN201510625954A CN106555894A CN 106555894 A CN106555894 A CN 106555894A CN 201510625954 A CN201510625954 A CN 201510625954A CN 106555894 A CN106555894 A CN 106555894A
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CN
China
Prior art keywords
valve
rod
additionally
primary diaphragm
pressure
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Pending
Application number
CN201510625954.6A
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Chinese (zh)
Inventor
张鹏
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张鹏
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Application filed by 张鹏 filed Critical 张鹏
Priority to CN201510625954.6A priority Critical patent/CN106555894A/en
Publication of CN106555894A publication Critical patent/CN106555894A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20Excess-flow valves

Abstract

The invention discloses a kind of beneficial to the natural gas pressure-reducing valve for improving outlet pressure control accuracy, including valve body, inlet tube, outlet and the first atmospheric pressure cavity, valve element, primary diaphragm is additionally provided with first atmospheric pressure cavity, and on valve body, it is additionally provided with high-voltage tube and low-voltage tube, regulating bolt is threaded with the valve body also, the first spring is additionally provided between the end of thread and primary diaphragm, valve element arrestment mechanism is additionally provided between the primary diaphragm and valve element, the valve element arrestment mechanism includes first connecting rod, ball sealer and second spring, the ball recess fitted with ball sealer sphere is additionally provided with valve body, the second atmospheric pressure cavity is additionally provided with this pressure-reducing valve, secondary diaphragm, second connecting rod and adopt pressure pipe.Present configuration is simple, opening is easy to control, while primary diaphragm good work environment, is easy to cause the present invention with longer service life and keeps good decompression precision in a long time, while the present invention is especially suitable for high Pressure reducing ratio gas is accurately depressured.

Description

A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy
Technical field
The present invention relates to fluid-transferring pipe piece apparatus field, more particularly to a kind of beneficial to the natural gas pressure-reducing valve for improving outlet pressure control accuracy.
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 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 version such as piston type and primary diaphragm formula has had been developed, simultaneously, primary diaphragm formula 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 primary diaphragm formula pressure-reducing valve, be undoubtedly conducive to further optimizing the utilization for promoting natural gas.
The content of the invention
For above-mentioned primary diaphragm formula 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 primary diaphragm formula pressure-reducing valve, be undoubtedly conducive to further optimizing the problem of the utilization for promoting natural gas, the invention provides a kind of beneficial to the natural gas pressure-reducing valve for improving outlet pressure control accuracy.
For the problems referred to above, a kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy that the present invention is provided reaches goal of the invention by following technical essential:A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy,Including valve body,Inlet tube is provided with the valve body、Outlet and the first atmospheric pressure cavity,The inlet tube is connected by valve element with outlet,Primary diaphragm is additionally provided with first atmospheric pressure cavity,First atmospheric pressure cavity is divided into upper cavity and lower chamber by the primary 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 primary diaphragm, it is additionally provided with the first spring,Valve element arrestment mechanism is additionally provided between the primary diaphragm and valve element,The valve element arrestment mechanism includes first connecting rod、Ball sealer and second spring,Primary 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;
Second connecting rod is also associated with the valve element, the hole coordinated with second connecting rod gap is additionally provided with the valve body, the second atmospheric pressure cavity is additionally provided with the valve body, the secondary diaphragm being fixedly connected with second connecting rod is provided with second atmospheric pressure cavity, be additionally provided between second atmospheric pressure cavity and high-voltage tube pressure pipe is adopted for what source of the gas was connected, and the tie point of pressure pipe and high-voltage tube is adopted positioned between ball recess and primary diaphragm, second connecting rod is located between valve element and the second atmospheric pressure cavity;
The elastic deformation direction of deformation direction, the first spring and second spring when the opening and closing direction of the valve element, primary diaphragm are pressurized, the axis direction of regulating bolt, the axial direction of second connecting rod are parallel to each other.
Specifically, the first atmospheric pressure cavity of the above, the structures such as primary 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 primary diaphragm, before decompression, when there is particular pressure differential in decompression latter two gas, the elastic force of comprehensive first spring, so that primary 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.
Simultaneously, in above structure, another the secondary valve on the second atmospheric pressure cavity and secondary diaphragm composition valve body is arranged on ball sealer towards one end of primary diaphragm due to adopting pressure pipe arrival end, so, its function could be realized after secondary valve seal failure also only in ball sealer with ball recess.In this secondary valve arrangement, the guiding to valve element is realized by second connecting rod not only, above structure is easy to the secondary diaphragm compression face size by arranging particular form simultaneously, when the Pressure reducing ratio of the present invention is larger, compensation by the second atmospheric pressure cavity to lower chamber to primary diaphragm pressure, realizes the present invention required natural gas air pressure of accurate output in range of regulation.Now, the direction of motion of secondary diaphragm brake spool is in opposite direction with what upper cavity brake spool was moved.
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 primary 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, primary 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 primary diaphragm is in annular shape, the first connecting rod is in shaft-like, and the axis collinear of valve element, primary diaphragm, the first spring, second spring, second connecting rod 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.
The working condition or decompression parameter of the present invention is affected for ease of preventing the non-artificial rotation of regulating bolt, lock nut is also threaded with 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.
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 primary 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, primary 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.
3rd, in above structure, second atmospheric pressure cavity and secondary diaphragm constitute another the secondary valve on valve body, ball sealer is arranged on towards one end of primary diaphragm due to adopting pressure pipe arrival end, so, after secondary valve seal failure also only in ball sealer with ball recess, its function could be realized.In this secondary valve arrangement, the guiding to valve element is realized by second connecting rod not only, above structure is easy to the secondary diaphragm compression face size by arranging particular form simultaneously, when the Pressure reducing ratio of the present invention is larger, compensation by the second atmospheric pressure cavity to lower chamber to primary diaphragm pressure, realizes the present invention required natural gas air pressure of accurate output in range of regulation.
Description of the drawings
Fig. 1 is a kind of structural representation beneficial to one specific embodiment of natural gas pressure-reducing valve for improving outlet pressure control accuracy of the present invention.
Label shown in accompanying drawing is respectively:1st, the first spring, 2, primary diaphragm, 3, high-voltage tube, 4th, valve element, 5, inlet tube, 6, regulating bolt, 7th, first connecting rod, 71, ball sealer, 8, second spring, 9th, valve body, 10, outlet, 11, second connecting rod, 12nd, the first atmospheric pressure cavity, 13, low-voltage tube, 14, adopt pressure pipe, 15th, secondary diaphragm, the 16, second atmospheric pressure cavity.
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 beneficial to raising outlet pressure control accuracy,Including valve body 9,Inlet tube 5 is provided with the valve body 9、Outlet 10 and the first atmospheric pressure cavity 12,The inlet tube 5 is connected by valve element 4 with outlet 10,Primary diaphragm 2 is additionally provided with first atmospheric pressure cavity 12,First atmospheric pressure cavity 12 is divided into upper cavity and lower chamber by the primary 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 primary diaphragm 2, it is additionally provided with the first spring 1,Valve element arrestment mechanism is additionally provided between the primary diaphragm 2 and valve element 4,The valve element arrestment mechanism includes first connecting rod 7、Ball sealer 71 and second spring 8,Primary 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;
Second connecting rod 11 is also associated with the valve element 4, the hole coordinated with 11 gap of second connecting rod is additionally provided with the valve body 9, the second atmospheric pressure cavity 16 is additionally provided with the valve body 9, the secondary diaphragm 15 being fixedly connected with second connecting rod 11 is provided with second atmospheric pressure cavity 16, be additionally provided between second atmospheric pressure cavity 16 and high-voltage tube 3 pressure pipe 14 is adopted for what source of the gas was connected, and the tie point of pressure pipe 14 and high-voltage tube 3 is adopted positioned between ball recess and primary diaphragm 2, second connecting rod 11 is located between valve element 4 and the second atmospheric pressure cavity 16;
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, primary diaphragm 2 are pressurized, the axis direction of regulating bolt 6, the axial direction of second connecting rod 11 are parallel to each other.
Specifically,The first atmospheric pressure cavity of the above 12、The structures such as primary 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 primary 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 primary 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, second atmospheric pressure cavity 16 and secondary diaphragm 15 constitute another the secondary valve on valve body 9, ball sealer 71 is arranged on towards one end of primary diaphragm 2 due to adopting 14 arrival end of pressure pipe, so, after secondary valve seal failure also only in ball sealer 71 with ball recess, its function could be realized.In this secondary valve arrangement, the guiding to valve element 4 is realized by second connecting rod 11 not only, above structure is easy to the 15 compression face size of secondary diaphragm by arranging particular form simultaneously, when the Pressure reducing ratio of the present invention is larger, by compensation of second atmospheric pressure cavity 16 to lower chamber to 2 pressure of primary diaphragm, the present invention required natural gas air pressure of accurate output in range of regulation is realized.In the present embodiment, valve element 4 is arranged between two secondary valves, the second atmospheric pressure cavity 16 offsets another active force of the secondary valve to valve element 4 to the active force of valve element 4.
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 primary 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 primary 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 primary diaphragm 2 is in annular shape, the first connecting rod 7 is in shaft-like, and valve element 4, primary diaphragm 2, first spring 1, second spring 8, the axis collinear of second connecting rod 11 and first connecting rod 7 six.
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.
The working condition or decompression parameter of the present invention is affected for ease of preventing the non-artificial rotation of regulating bolt 6, lock nut is also threaded with 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.
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 (5)

1. a kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy, including valve body(9), the valve body(9)On be provided with inlet tube(5), outlet(10)With the first atmospheric pressure cavity(12), the inlet tube(5)And outlet(10)By valve element(4)It is connected, first atmospheric pressure cavity(12)In be additionally provided with primary diaphragm(2), the primary diaphragm(2)By the first 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 primary diaphragm(2)Between be additionally provided with the first spring(1), the primary 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 primary 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)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, the valve body(9)On be additionally provided with the second atmospheric pressure cavity(16), second atmospheric pressure cavity(16)In be provided with and second connecting rod(11)The secondary diaphragm being fixedly connected(15), second atmospheric pressure cavity(16)With high-voltage tube(3)Between be additionally provided with for source of the gas connection adopt pressure pipe(14), and adopt pressure pipe(14)With high-voltage tube(3)Tie point be located at ball recess and primary diaphragm(2)Between, second connecting rod(11)Positioned at valve element(4)With the second atmospheric pressure cavity(16)Between;
The valve element(4)Opening and closing direction, primary diaphragm(2)Deformation direction, the first spring when pressurized(1)And second spring(8)Elastic deformation direction, regulating bolt(6)Axis direction, second connecting rod(11)Axial direction be parallel to each other.
2. it is according to claim 1 a kind of beneficial to the natural gas pressure-reducing valve for improving outlet pressure control accuracy, it is characterised in that the valve element(4)With inlet tube(5)And outlet(10)Three constitutes stop valve current limliting form, the primary diaphragm(2)In annular shape, the first connecting rod(7)In shaft-like, and valve element(4), primary diaphragm(2), the first spring(1), second spring(8), second connecting rod(11)And first connecting rod(7)Six axis collinear.
3. it is according to claim 1 a kind of beneficial to the natural gas pressure-reducing valve for improving outlet pressure control accuracy, 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. it is according to claim 1 a kind of beneficial to the natural gas pressure-reducing valve for improving outlet pressure control accuracy, it is characterised in that the regulating bolt(6)On be also threaded with lock nut.
5. it is according to claim 1 a kind of beneficial to the natural gas pressure-reducing valve for improving outlet pressure control accuracy, it is characterised in that the ball sealer(71)For the ball that material is fluorubber.
CN201510625954.6A 2015-09-28 2015-09-28 A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy Pending CN106555894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510625954.6A CN106555894A (en) 2015-09-28 2015-09-28 A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510625954.6A CN106555894A (en) 2015-09-28 2015-09-28 A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy

Publications (1)

Publication Number Publication Date
CN106555894A true CN106555894A (en) 2017-04-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510625954.6A Pending CN106555894A (en) 2015-09-28 2015-09-28 A kind of natural gas pressure-reducing valve beneficial to raising outlet pressure control accuracy

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108662224A (en) * 2018-07-19 2018-10-16 杭州乐守科技有限公司 A kind of pressure maintaining valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108662224A (en) * 2018-07-19 2018-10-16 杭州乐守科技有限公司 A kind of pressure maintaining valve
CN108662224B (en) * 2018-07-19 2019-09-24 台州嘉亨阀门有限公司 A kind of pressure maintaining valve

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Application publication date: 20170405