CN105179768A - Natural gas pressure reducing valve beneficial to improving gas exhaust pressure control precision - Google Patents
Natural gas pressure reducing valve beneficial to improving gas exhaust pressure control precision Download PDFInfo
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- CN105179768A CN105179768A CN201510500072.7A CN201510500072A CN105179768A CN 105179768 A CN105179768 A CN 105179768A CN 201510500072 A CN201510500072 A CN 201510500072A CN 105179768 A CN105179768 A CN 105179768A
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- connecting rod
- spool
- spring
- valve body
- primary diaphragm
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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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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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
- 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
- F16K31/365—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 diaphragm
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/10—Means to prevent accidental or unauthorised actuation with locking caps or locking bars
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a natural gas pressure reducing valve beneficial to improving gas exhaust pressure control precision. The natural gas pressure reducing valve comprises a valve body, an inlet pipe, an outlet pipe, a first gas pressure cavity and a valve element. A first membrane is further arranged in the first gas pressure cavity, and the valve body is further provided with a high-pressure pipe and a low-pressure pipe. The valve body is also in threaded connection with an adjusting bolt. A first spring is arranged between the threaded end and the first membrane. A valve element braking mechanism is arranged between the first film and the valve element. The valve element braking mechanism comprises a first connecting rod, a seal ball and a second spring. Moreover, the valve body is provided with a spherical groove attached to the spherical surface of the seal ball. The pressure reducing valve is further provided with a second gas pressure cavity, a second film, a second connecting rod and a pressure collecting pipe. The natural gas pressure reducing valve is simple in structure, and the opening state is convenient to control; meanwhile, the working environment of the first membrane is good, so that the natural gas pressure reducing valve has long service life and keeps good pressure reducing precision in a long time. Moreover, the natural gas pressure reducing valve is particularly suitable for precise gas pressure reducing at a high pressure reducing ratio.
Description
Technical field
The present invention relates to fluid-transferring pipe piece apparatus field, particularly relate to a kind of natural gas pressure-reducing valve being beneficial to raising outlet pressure control accuracy.
Background technique
Rock gas is one of safer combustion gas, and it is not containing carbon monoxide, also lta, once leak, can upwards spread immediately, not easily gather formation explosive gas, Security is higher.Adopt rock gas as the energy, the consumption of coal and oil can be reduced, thus environmental protect pollution problem greatly; Rock gas, as a kind of clean energy resource, can reduce sulfur dioxide and dust discharge amount nearly 100%, reduces CO2 emissions 60% and oxynitride discharge amount 50%, and contributes to reducing acid rain formation, global greenhouse effect of releiving, fundamentally environmental protect quality.Economical and practical rock gas is compared with artificial coal gas, suitable with specific heat of combustion price, and rock gas is clean clean, can extend the working life of kitchen range, also be conducive to the expenditure that user reduces maintenance expenses.The advantage of above rock gas makes rock gas as industry and domestic gas fuel, has the advantages such as unit calorific value is high, exhaust pollution is little, supply is reliable, price is low, has become the developing direction of world's clean fuel.
The transport of rock gas generally adopts pressure piping and transportation tank car, from collection, be transported to user use generally need to pressurize to it, decompression operation, natural gas pressure-reducing valve is as the visual plant in decompression process, develop the structural type such as piston type and primary diaphragm formula, simultaneously, primary diaphragm formula reduction valve, again with highly sensitive feature, is widely used in larger gas stove stokehold natural gas depressurization.The structure of further optimization primary diaphragm formula reduction valve, is conducive to optimizing the utilization promoting rock gas further undoubtedly.
Summary of the invention
For above-mentioned primary diaphragm formula reduction valve again with highly sensitive feature, be widely used in larger gas stove stokehold natural gas depressurization.The structure of further optimization primary diaphragm formula reduction valve, is conducive to the problem optimizing the utilization promoting rock gas further undoubtedly, the invention provides a kind of natural gas pressure-reducing valve being beneficial to raising outlet pressure control accuracy.
For the problems referred to above, a kind of natural gas pressure-reducing valve improving outlet pressure control accuracy that is beneficial to provided by the invention reaches goal of the invention by following technological points: a kind of natural gas pressure-reducing valve being beneficial to raising outlet pressure control accuracy, comprise valve body, described valve body is provided with inlet tube, outer pipe and the first atmospheric pressure cavity, described inlet tube is connected by spool with outer pipe, also primary diaphragm is provided with in described first atmospheric pressure cavity, first atmospheric pressure cavity is divided into upper cavity and lower chamber by described primary diaphragm, and valve body is also provided with high-voltage tube and low-voltage tube, described high-voltage tube realizes inlet tube and is connected with the gas circuit of lower chamber, described low-voltage tube realizes outer pipe and is connected with the gas circuit of upper cavity, described valve body has also been threaded adjusting bolt, the threaded end of described adjusting bolt stretches in upper cavity, and be also provided with the first spring between described threaded end and primary diaphragm, spool arrestment mechanism is also provided with between described primary diaphragm and spool, described spool arrestment mechanism comprises first connecting rod, ball sealer and the second spring, one end of described first connecting rod is fixed on primary diaphragm and is arranged on the side of lower chamber, ball sealer is fixed on the other end of first connecting rod, the two ends of the second spring are individually fixed on ball sealer and spool, and valve body is also provided with the ball recess of fitting with ball sealer sphere, described ball recess is a part for high-voltage tube, and ball sealer is between ball recess and high-voltage tube entry end,
Described spool is also connected with second connecting rod, described valve body is also provided with the hole with second connecting rod Spielpassung, described valve body is also provided with the second atmospheric pressure cavity, the secondary diaphragm be fixedly connected with second connecting rod is provided with in described second atmospheric pressure cavity, described second atmospheric pressure cavity be also provided with between high-voltage tube be communicated with for source of the gas adopt pressure pipe, and the tie point adopting pressure pipe and high-voltage tube is between ball recess and primary diaphragm, second connecting rod is between spool and the second atmospheric pressure cavity;
The resiliently deformable direction of deformation direction, the first spring and the second spring when the opening and closing direction of described spool, primary diaphragm pressurized, the axial direction of adjusting bolt, the axial direction of second connecting rod are parallel to each other.
Concrete, above first atmospheric pressure cavity, the secondary valve of these reduction valve of Structure composing such as primary diaphragm, in the present invention, by high-voltage tube, the gas in inlet tube before decompression is introduced in lower chamber, from outer pipe, post-decompression gas is introduced in upper cavity by low-voltage tube, more than before decompression, post-decompression two kinds of gases, the elastic force of the first spring acts on primary diaphragm, before decompression, when there is particular pressure differential in decompression latter two gas, the elastic force of comprehensive first spring, make the elastic deformation amount that primary diaphragm reaches stable, above elastic deformation amount passes through first connecting rod, the transmission effect of ball sealer and the second spring is on spool, realize the adjustment of spool aperture, reach the object of structure pressure-reducing provided by the invention, and the decrement that the adjustment of the outlet pressure that reduces pressure adjusts the first spring by adjusting bolt is realized.
Simultaneously, in above structure, the second atmospheric pressure cavity and secondary diaphragm form another the secondary valve on valve body, are arranged on ball sealer one end towards primary diaphragm owing to adopting pressure pipe entry end, like this, this secondary valve also only could realize its function after the seal failure of ball sealer and ball recess.In this secondary valve arrangement, the guiding to spool is not achieved by means of only second connecting rod, above structure is convenient to the secondary diaphragm compression face size by arranging particular form simultaneously, when Pressure reducing ratio of the present invention is larger, by the second atmospheric pressure cavity to the compensation of lower chamber to primary diaphragm pressure, realize the rock gas air pressure of the present invention in range of regulation required by accurate output.Now, the moving direction of secondary diaphragm brake spool is contrary with the direction that upper cavity brake spool moves.
In this structure, the on off operating mode being realized high-voltage tube by the ball sealer arranged is regulated, be convenient to the adjustment of working state of the present invention: because ball sealer and the first spring are positioned at the not homonymy of primary diaphragm, so need by compressing the first spring, namely in upper cavity, screw in the mode of adjusting bolt, after ball sealer and ball recess are departed from, just in lower chamber and upper cavity, post-decompression pressure medium before and after decompression can be injected respectively, therefore the present invention has the advantage that on off state is convenient to adjust; Simultaneously, the present invention does not adopt as structural types such as spiracle, pressure release escape orifices, therefore gas-tight, primary diaphragm long-term disposal are totally in the course of the work, in the environment of not easily enrichment steam, namely the present invention also has long service life, can ensure the advantages such as decompression precision for a long time can to ensure the present invention.
Further technological scheme is:
For optimizing each action component stressing conditions in use in the present invention, namely on even all parts cross section each point stressed, avoid or reduce separately and valve body occur rub and affect the life-span of the present invention, produce unnecessary noise etc., described spool and inlet tube and outer pipe three form stop valve current limliting form, described primary diaphragm is circular, described first connecting rod is shaft-like, and the axis collinear of spool, primary diaphragm, the first spring, the second spring, second connecting rod and first connecting rod.
Be convenient to as a kind of the structural type manufacturing, be conducive to reducing volume of the present invention, described high-voltage tube is a straight length, and described first connecting rod and ball sealer are all or part of is arranged in high-voltage tube.
Affect working state of the present invention or decompression parameter for ease of preventing the non-artificial rotation of adjusting bolt, described adjusting bolt has also been threaded lock nut.
As the technological scheme that static seal under a kind of corrosion-resistant, low pressure is effective, the ball of described ball sealer to be material be fluorine rubber.
The present invention has following beneficial effect:
1, structure of the present invention is simple, the on off operating mode being realized high-voltage tube by the ball sealer arranged is regulated, be convenient to the adjustment of working state of the present invention: because ball sealer and the first spring are positioned at the not homonymy of primary diaphragm, so need by compressing the first spring, namely in upper cavity, screw in the mode of adjusting bolt, after ball sealer and ball recess are departed from, just in lower chamber and upper cavity, post-decompression pressure medium before and after decompression can be injected respectively, therefore the present invention has the advantage that on off state is convenient to adjust.
2, the present invention does not adopt as structural types such as spiracle, pressure release escape orifices, therefore gas-tight, primary diaphragm long-term disposal are totally in the course of the work, in the environment of not easily enrichment steam, namely the present invention also has long service life, can ensure the advantages such as decompression precision for a long time can to ensure the present invention.
3, in above structure, second atmospheric pressure cavity and secondary diaphragm form another the secondary valve on valve body, be arranged on ball sealer one end towards primary diaphragm owing to adopting pressure pipe entry end, like this, this secondary valve also only could realize its function after the seal failure of ball sealer and ball recess.In this secondary valve arrangement, the guiding to spool is not achieved by means of only second connecting rod, above structure is convenient to the secondary diaphragm compression face size by arranging particular form simultaneously, when Pressure reducing ratio of the present invention is larger, by the second atmospheric pressure cavity to the compensation of lower chamber to primary diaphragm pressure, realize the rock gas air pressure of the present invention in range of regulation required by accurate output.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation being beneficial to the natural gas pressure-reducing valve specific embodiment improving outlet pressure control accuracy of the present invention.
Label shown in accompanying drawing is respectively: 1, the first spring, and 2, primary diaphragm, 3, high-voltage tube, 4, spool, 5, inlet tube, 6, adjusting bolt, 7, first connecting rod, 71, ball sealer, the 8, second spring, 9, valve body, 10, outer pipe, 11, second connecting rod, 12, the first atmospheric pressure cavity, 13, low-voltage tube, 14, adopt pressure pipe, 15, secondary diaphragm, the 16, second atmospheric pressure cavity.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but 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 being beneficial to raising outlet pressure control accuracy, comprise valve body 9, described valve body 9 is provided with inlet tube 5, outer pipe 10 and the first atmospheric pressure cavity 12, described inlet tube 5 is connected by spool 4 with outer pipe 10, primary diaphragm 2 is also provided with in described first atmospheric pressure cavity 12, first atmospheric pressure cavity 12 is divided into upper cavity and lower chamber by described primary diaphragm 2, and valve body 9 is also provided with high-voltage tube 3 and low-voltage tube 13, described high-voltage tube 3 realizes inlet tube 5 and is connected with the gas circuit of lower chamber, described low-voltage tube 13 realizes outer pipe 10 and is connected with the gas circuit of upper cavity, described valve body 9 has also been threaded adjusting bolt 6, the threaded end of described adjusting bolt 6 stretches in upper cavity, and between described threaded end and primary diaphragm 2, be also provided with the first spring 1, spool arrestment mechanism is also provided with between described primary diaphragm 2 and spool 4, described spool arrestment mechanism comprises first connecting rod 7, ball sealer 71 and the second spring 8, one end of described first connecting rod 7 is fixed on primary diaphragm 2 and is arranged on the side of lower chamber, ball sealer 71 is fixed on the other end of first connecting rod 7, the two ends of the second spring 8 are individually fixed on ball sealer 71 and spool 4, and valve body 9 is also provided with the ball recess of fitting with ball sealer 71 sphere, described ball recess is a part for high-voltage tube 3, and ball sealer 71 is between ball recess and high-voltage tube 3 entry end,
Described spool 4 is also connected with second connecting rod 11, described valve body 9 is also provided with the hole with second connecting rod 11 Spielpassung, described valve body 9 is also provided with the second atmospheric pressure cavity 16, the secondary diaphragm 15 be fixedly connected with second connecting rod 11 is provided with in described second atmospheric pressure cavity 16, described second atmospheric pressure cavity 16 be also provided with between high-voltage tube 3 be communicated with for source of the gas adopt pressure pipe 14, and the tie point adopting pressure pipe 14 and high-voltage tube 3 is between ball recess and primary diaphragm 2, second connecting rod 11 is between spool 4 and the second atmospheric pressure cavity 16;
The resiliently deformable direction of deformation direction, the first spring 1 and the second spring 8 when the opening and closing direction of described spool 4, primary diaphragm 2 pressurized, the axial direction of adjusting bolt 6, the axial direction of second connecting rod 11 are parallel to each other.
Concrete, above first atmospheric pressure cavity 12, the secondary valve of this reduction valve such as Structure composing such as primary diaphragm 2 grade, in the present invention, by high-voltage tube 3, the gas in inlet tube 5 before decompression is introduced in lower chamber, from outer pipe 10, post-decompression gas is introduced in upper cavity by low-voltage tube 13, more than before decompression, post-decompression two kinds of gases, the elastic force of the first spring 1 acts 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, make the elastic deformation amount that primary diaphragm 2 reaches stable, above elastic deformation amount is by first connecting rod 7, the transmission effect of ball sealer 71 and the second spring 8 is on spool 4, realize the adjustment of spool 4 aperture, reach the object of structure pressure-reducing provided by the invention, and the decrement that the adjustment of the outlet pressure that reduces pressure adjusts the first spring 1 by adjusting bolt 6 is realized.
In the present embodiment, second atmospheric pressure cavity 16 and secondary diaphragm 15 form another the secondary valve on valve body 9, be arranged on ball sealer 71 one end towards primary diaphragm 2 owing to adopting pressure pipe 14 entry end, like this, this secondary valve also only could realize its function after ball sealer 71 with the seal failure of ball recess.In this secondary valve arrangement, the guiding to spool 4 is not achieved by means of only second connecting rod 11, above structure is convenient to the secondary diaphragm 15 compression face size by arranging particular form simultaneously, when Pressure reducing ratio of the present invention is larger, by the second atmospheric pressure cavity 16 pairs of lower chambers to the compensation of primary diaphragm 2 pressure, realize the rock gas air pressure of the present invention in range of regulation required by accurate output.In the present embodiment, be arranged on by spool 4 between two secondary valves, the active force of the second atmospheric pressure cavity 16 pairs of spools 4 offsets another secondary valve to the active force of spool 4.
In the present embodiment, the on off operating mode being realized high-voltage tube 3 by the ball sealer 71 arranged is regulated, be convenient to the adjustment of working state of the present invention: because ball sealer 71 and the first spring 1 are positioned at the not homonymy of primary diaphragm 2, so need by compressing the first spring 1, namely in upper cavity, screw in the mode of adjusting bolt 6, after ball sealer 71 and ball recess are departed from, just in lower chamber and upper cavity, post-decompression pressure medium before and after decompression can be injected respectively, therefore the present invention has the advantage that on off state is convenient to adjust; Simultaneously, the present invention does not adopt as structural types such as spiracle, pressure release escape orifices, therefore gas-tight, primary diaphragm 2 long-term disposal are totally in the course of the work, in the environment of not easily enrichment steam, namely the present invention also has long service life, can ensure the advantages such as decompression precision for a long time can to ensure the present invention.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for optimizing each action component stressing conditions in use in the present invention, i.e. each point stressed on even all parts cross section, avoid or reduce separately and valve body 9 occur rub and affect the life-span of the present invention, produce unnecessary noise etc., described spool 4 forms stop valve current limliting form with inlet tube 5 and outer pipe 10 three, described primary diaphragm 2 is in circular, described first connecting rod 7 is in shaft-like, and spool 4, primary diaphragm 2, first spring 1, second spring 8, the axis collinear of second connecting rod 11 and first connecting rod 7 six.
Manufacture as a kind of being convenient to, being conducive to reducing the structural type of volume of the present invention, described high-voltage tube 3 is a straight length, described first connecting rod 7 and ball sealer 71 is all or part of is arranged in high-voltage tube 3.
Affect working state of the present invention or decompression parameter for ease of preventing the non-artificial rotation of adjusting bolt 6, described adjusting bolt 6 has also been threaded lock nut.
As the technological scheme that static seal under a kind of corrosion-resistant, low pressure is effective, described ball sealer 71 for material be the ball of fluorine rubber.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, can not 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, not departing from other mode of executions drawn under technological scheme of the present invention, all should be included in protection scope of the present invention.
Claims (5)
1. one kind is beneficial to the natural gas pressure-reducing valve improving outlet pressure control accuracy, comprise valve body (9), described valve body (9) is provided with inlet tube (5), outer pipe (10) and the first atmospheric pressure cavity (12), described inlet tube (5) is connected by spool (4) with outer pipe (10), primary diaphragm (2) is also provided with in described first atmospheric pressure cavity (12), first atmospheric pressure cavity (12) is divided into upper cavity and lower chamber by described primary diaphragm (2), and valve body (9) is also provided with high-voltage tube (3) and low-voltage tube (13), described high-voltage tube (3) realizes inlet tube (5) and is connected with the gas circuit of lower chamber, described low-voltage tube (13) realizes outer pipe (10) and is connected with the gas circuit of upper cavity, adjusting bolt that described valve body (9) has also been threaded (6), the threaded end of described adjusting bolt (6) stretches in upper cavity, and be also provided with the first spring (1) between described threaded end and primary diaphragm (2), spool arrestment mechanism is also provided with between described primary diaphragm (2) and spool (4), it is characterized in that, described spool arrestment mechanism comprises first connecting rod (7), ball sealer (71) and the second spring (8), one end of described first connecting rod (7) is fixed on primary diaphragm (2) and is arranged on the side of lower chamber, ball sealer (71) is fixed on the other end of first connecting rod (7), the two ends of the second spring (8) are individually fixed on ball sealer (71) and spool (4), and valve body (9) is also provided with the ball recess of fitting with ball sealer (71) sphere, described ball recess is a part for high-voltage tube (3), and ball sealer (71) is positioned between ball recess and high-voltage tube (3) entry end,
Described spool (4) is also connected with second connecting rod (11), described valve body (9) is also provided with the hole with second connecting rod (11) Spielpassung, described valve body (9) is also provided with the second atmospheric pressure cavity (16), the secondary diaphragm (15) be fixedly connected with second connecting rod (11) is provided with in described second atmospheric pressure cavity (16), described second atmospheric pressure cavity (16) be also provided with between high-voltage tube (3) be communicated with for source of the gas adopt pressure pipe (14), and the tie point adopting pressure pipe (14) and high-voltage tube (3) is positioned between ball recess and primary diaphragm (2), second connecting rod (11) is positioned between spool (4) and the second atmospheric pressure cavity (16),
The resiliently deformable direction of deformation direction, the first spring (1) and the second spring (8) when the opening and closing direction of described spool (4), primary diaphragm (2) pressurized, the axial direction of adjusting bolt (6), the axial direction of second connecting rod (11) are parallel to each other.
2. a kind of natural gas pressure-reducing valve being beneficial to raising outlet pressure control accuracy according to claim 1, it is characterized in that, described spool (4) forms stop valve current limliting form with inlet tube (5) and outer pipe (10) three, described primary diaphragm (2) is in circular, described first connecting rod (7) is in shaft-like, and the axis collinear of spool (4), primary diaphragm (2), the first spring (1), the second spring (8), second connecting rod (11) and first connecting rod (7) six.
3. a kind of natural gas pressure-reducing valve being beneficial to raising outlet pressure control accuracy according to claim 1, it is characterized in that, described high-voltage tube (3) is a straight length, described first connecting rod (7) and ball sealer (71) is all or part of is arranged in high-voltage tube (3).
4. a kind of natural gas pressure-reducing valve being beneficial to raising outlet pressure control accuracy according to claim 1, it is characterized in that, described adjusting bolt (6) has also been threaded lock nut.
5. be according to claim 1ly a kind ofly beneficial to the natural gas pressure-reducing valve improving outlet pressure control accuracy, it is characterized in that, described ball sealer (71) for material be the ball of fluorine rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500072.7A CN105179768B (en) | 2015-08-17 | 2015-08-17 | A kind of natural gas pressure-reducing valve for being beneficial to improve outlet pressure control accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500072.7A CN105179768B (en) | 2015-08-17 | 2015-08-17 | A kind of natural gas pressure-reducing valve for being beneficial to improve outlet pressure control accuracy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179768A true CN105179768A (en) | 2015-12-23 |
| CN105179768B CN105179768B (en) | 2017-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510500072.7A Active CN105179768B (en) | 2015-08-17 | 2015-08-17 | A kind of natural gas pressure-reducing valve for being beneficial to improve outlet pressure control accuracy |
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| CN (1) | CN105179768B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575620A (en) * | 2017-10-27 | 2018-01-12 | 四川森洁燃气设备有限公司 | A kind of control valve for automobile fuel gas electric control operation |
| CN107725219A (en) * | 2017-10-27 | 2018-02-23 | 四川森洁燃气设备有限公司 | A kind of automobile fuel gas electric-controlled injection method |
| CN107795716A (en) * | 2017-10-27 | 2018-03-13 | 四川森洁燃气设备有限公司 | A kind of operating method of automobile fuel gas electric control operation control valve |
| CN107829847A (en) * | 2017-10-27 | 2018-03-23 | 四川森洁燃气设备有限公司 | A kind of automobile fuel gas electric-controlling injection system |
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| CN201884739U (en) * | 2010-11-24 | 2011-06-29 | 广东联塑科技实业有限公司 | Adjustable plastic pressure-reducing valve with double springs |
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| CN204300482U (en) * | 2014-12-05 | 2015-04-29 | 中国标准化研究院 | A kind of low-pressure fuel gas cut-off valve |
| CN204922128U (en) * | 2015-08-17 | 2015-12-30 | 成都国光电子仪表有限责任公司 | Do benefit to natural gas relief pressure valve of controlled pressure output precision |
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2015
- 2015-08-17 CN CN201510500072.7A patent/CN105179768B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4313460A (en) * | 1979-10-04 | 1982-02-02 | Jh Industries, Inc. | Pilot valve |
| CN201884739U (en) * | 2010-11-24 | 2011-06-29 | 广东联塑科技实业有限公司 | Adjustable plastic pressure-reducing valve with double springs |
| CN203516893U (en) * | 2013-09-17 | 2014-04-02 | 宁波合生制动科技有限公司 | Constant pressure fully-closed type pressure reducing valve |
| CN204300482U (en) * | 2014-12-05 | 2015-04-29 | 中国标准化研究院 | A kind of low-pressure fuel gas cut-off valve |
| CN204922128U (en) * | 2015-08-17 | 2015-12-30 | 成都国光电子仪表有限责任公司 | Do benefit to natural gas relief pressure valve of controlled pressure output precision |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575620A (en) * | 2017-10-27 | 2018-01-12 | 四川森洁燃气设备有限公司 | A kind of control valve for automobile fuel gas electric control operation |
| CN107725219A (en) * | 2017-10-27 | 2018-02-23 | 四川森洁燃气设备有限公司 | A kind of automobile fuel gas electric-controlled injection method |
| CN107795716A (en) * | 2017-10-27 | 2018-03-13 | 四川森洁燃气设备有限公司 | A kind of operating method of automobile fuel gas electric control operation control valve |
| CN107829847A (en) * | 2017-10-27 | 2018-03-23 | 四川森洁燃气设备有限公司 | A kind of automobile fuel gas electric-controlling injection system |
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| Publication number | Publication date |
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| CN105179768B (en) | 2017-10-31 |
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