CN205479550U - Natural gas relief pressure valve - Google Patents
Natural gas relief pressure valve Download PDFInfo
- Publication number
- CN205479550U CN205479550U CN201620264202.1U CN201620264202U CN205479550U CN 205479550 U CN205479550 U CN 205479550U CN 201620264202 U CN201620264202 U CN 201620264202U CN 205479550 U CN205479550 U CN 205479550U
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- blood pressure
- pressure
- feedback channel
- pressure regulating
- outlet passageway
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Abstract
The utility model discloses a natural gas relief pressure valve, including the valve body, be provided with inlet channel, air outlet channel, escape orifice and feedback path on the valve body, be provided with step -down portion between inlet channel and the air outlet channel, be provided with pressure regulating portion between escape orifice and the feedback path, threaded connection has pressure adjusting screw on the valve body, is provided with the pressure regulating seat among the feedback path, step -down portion includes step -down case and step -down disk seat, and the step -down disk seat is provided with the cylindric structure of external screw thread for the outside, and steps down disk seat threaded connection in inlet channel, and the step -down case lies in air outlet channel, and steps down and be provided with the cross -section respectively on disk seat and the step -down case and be conical recess and arch, and the arch just to the recess, still is provided with the diaphragm on the step -down case, and the lateral wall of diaphragm is blocked air outlet channel and is formed on air outlet channel and feed back the chamber. The utility model discloses a pressure -relief controllability is good, operation expense low, troubleshooting makes things convenient for, can avoid the utility model discloses the natural gas spills over in the course of the work.
Description
Technical field
This utility model relates to compressed gas decompressor field, particularly relates to a kind of natural gas pressure-reducing valve.
Background technology
Along with natural gas uses more and more extensive, various forms of air relief valve emerge in an endless stream, and optimizing further of natural gas depressurization valve arrangement will be promoted the utilization of natural gas further.As a example by environmental consciousness, natural gas can be greatly reduced Vehicular exhaust pollution for the fuel of vehicle motor, but in order to improve the single aeration stroke of the vehicle with natural gas as fuel, gas cylinder it is provided with for housing natural gas on vehicle, and the gas pressure being finally introducing cylinder is generally several kPas, so, the air relief valve reducing pressure high-pressure natural gas is particularly important, simultaneously in practice, the stability of above air relief valve performance has been reacted on the power of vehicle even in traffic safety the most intuitively.
Gas combustion automobile is in the process of moving, in its gas cylinder, gas pressure can be gradually lowered, so, for obtaining stable low pressure natural gas output or different engine power output, between blood pressure lowering spool and the valve seat of air relief valve will necessarily frequently relative motion with adjust output gas pressure, and gas passage air-flow between above blood pressure lowering spool and valve seat is very fast, either the washing away or friction between blood pressure lowering spool and valve seat of impurity in gas circuit, all can cause air relief valve degradation, even impurity effect blood pressure lowering spool and valve seat Guan Bi, so, gas pressure in the state lower cylinder that vehicle disables for a long time will slowly raise, cause igniting or other engine failure, optimizing further of gas pressure reducer valve core structure is particularly important.
Utility model content
Existing gas pressure reducer valve core structure being optimized problem further that be particularly important for above-mentioned, this utility model provides a kind of natural gas pressure-reducing valve.
nullFor solving the problems referred to above，A kind of natural gas pressure-reducing valve that this utility model provides solves problem by techniques below main points: a kind of natural gas pressure-reducing valve，Including valve body，It is provided with inlet channel on described valve body、Outlet passageway、Escape orifice and feedback channel，It is provided with decompression portion between described inlet channel and outlet passageway，Pressure-regulating portion it is provided with between escape orifice and feedback channel，The arrival end of feedback channel and the port of export communicate with inlet channel and outlet passageway respectively，The most threaded on described valve body have pressure regulating screw，One end of described pressure regulating screw is stretched in feedback channel，And the end of pressure regulating screw one end of stretching into feedback channel is taper，Feedback channel is additionally provided with and the pressure regulating seat of feedback channel matched in clearance，Described pressure regulating seat is hollow、End is provided with the adjusting pressuring valve core of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw stretch into feedback channel one rectify exchange pressure valve core，The port of export of described escape orifice communicates with outlet passageway，The arrival end of escape orifice is communicated with feedback channel by the gap between the tapered end of pressure regulating screw with pressure regulating seat spool；
Described decompression portion includes blood pressure lowering spool and blood pressure lowering valve seat, described blood pressure lowering valve seat is that outside is provided with externally threaded cylindrical-shaped structure, and blood pressure lowering valve seat is threaded in inlet channel, blood pressure lowering spool is positioned at outlet passageway, and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat and blood pressure lowering spool, described projection is just to described groove, blood pressure lowering spool is additionally provided with diaphragm away from one end of blood pressure lowering valve seat, the sidewall of diaphragm blocks outlet passageway, diaphragm makes to be formed feedback cavity on outlet passageway, and the port of export of described feedback channel communicates with feedback cavity.
Concrete, the pressure regulating screw of setting, pressure regulating seat are pressure-regulating portion, and source of the gas is introduced by inlet channel, and the gap between the groove and the projection that are respectively provided with on blood pressure lowering spool and blood pressure lowering valve seat enters into and completes blood pressure lowering in outlet passageway；nullIn the feedback channel arranged，The entrance of feedback channel communicates with inlet channel，Gases at high pressure are just introduced in pressure regulating seat，In the port of export of feedback channel and escape orifice，Preferably the port of export of feedback channel is arranged on the front end of gas channel between pressure regulating seat and pressure regulating screw，The i.e. arrival end of feedback channel is connected with gas outlet by the air inlet on pressure regulating seat respectively with the port of export，Escape orifice is arranged on the rear end of described gas channel，I.e. after adjusting pressuring valve core，Sheathed O between the air inlet and gas outlet of pressure regulating seat，Escape orifice is arranged on the rear end of described gas channel，So，Gap between pressure regulating seat and pressure regulating screw adjusts and is passed into the size of air-flow in escape orifice，So，The pressure of feedback channel rear end force blood pressure lowering spool away from or towards blood pressure lowering valve seat move，I.e. diaphragm compression chord is deformed or/and slide along outlet passageway，Reach to adjust the purpose of air-flow size between blood pressure lowering spool and blood pressure lowering valve seat，So，It is easy to obtain gas pressure size after different decompressions.
In this programme, owing to using the version that pressure regulating seat and feedback channel matched in clearance, blood pressure lowering valve seat be threaded with inlet channel, pressure regulating screw is connected with valve body screw thread, make this utility model can separate with valve body with the spool of decompression easily for pressure regulation, it is easy to the examination and maintenance of two above spool, can make that effect of easing stress of the present utility model is controlled, operation expense is low, failture evacuation is convenient；Meanwhile, be connected with outlet passageway for adjusting the escape orifice port of export of feedback cavity pressure size, it is to avoid this utility model natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
As preferred version of the present utility model, inlet channel arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel arrival end, with the impurity in isolation gases at high pressure, reduce impurity to the impact of both the above spool and the quality of follow-up low pressure gas, outlet passageway arranges gs-oil separator, with the water separated out after removing decompression or oil.
Further technical scheme is:
For ease of reducing volume of the present utility model, processing the most of the present utility model, reduce the quantity of sealing surface on valve body, described outlet passageway, inlet channel, feedback channel and escape orifice are formed by least one section of straight hole section.Above structure is easy to valve body is set to an entirety, processing inlet channel, outlet passageway, feedback channel and escape orifice by the form of boring, the opening of above inlet channel, outlet passageway, feedback channel and escape orifice can be sealed by the version of pipe threaded screw fitted seal pad.
For promoting the feedback response speed of described blood pressure lowering spool, buffering blood pressure lowering spool and the collision of blood pressure lowering valve seat, being additionally provided with two ends in described outlet passageway and be respectively acting on the spring of feedback cavity wall and diaphragm, described spring, blood pressure lowering spool and blood pressure lowering valve seat are respectively positioned in same straight hole section.Arrangement above is easy to improve blood pressure lowering spool by the precision of feedback channel gas pressure, the installation being easy to blood pressure lowering spool and spring and replacing.
For preventing the non-artificial rotation of described pressure regulating screw, affect outlet pressure of the present utility model, described pressure regulating screw is additionally provided with two ends and is respectively acting on the elastic component of pressure regulating screw and valve body.
Owing to spring can deform in the larger context compared to other elastic components, for making pressure regulating screw elastic component during pressure regulation the most all have active force to pressure regulating screw, described elastic component is compression spring.
This utility model has the advantages that
1, this utility model simple in construction, owing to using the version that pressure regulating seat and feedback channel matched in clearance, blood pressure lowering valve seat be threaded with inlet channel, pressure regulating screw is connected with valve body screw thread, make this utility model can separate with valve body with the spool of decompression easily for pressure regulation, it is easy to the examination and maintenance of two above spool, can make that effect of easing stress controllability of the present utility model is good, operation expense is low, failture evacuation is convenient.
2, be connected with outlet passageway for adjusting the escape orifice port of export of feedback cavity pressure size, it is to avoid this utility model natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of a kind of natural gas pressure-reducing valve described in the utility model.
Figure acceptance of the bid note is respectively as follows: 1, escape orifice, and 2, adjusting pressuring valve core, 3, sealing gasket, 4, pressure regulating seat, 5, feedback channel, 6, valve body, 7, blood pressure lowering spool, 71, diaphragm, 72, spring, 73, feedback cavity, 8, blood pressure lowering valve seat, 9, inlet channel, 10, outlet passageway, 11, pressure regulating screw, 12, elastic component.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following example:
Embodiment 1:
nullAs shown in Figure 1，A kind of natural gas pressure-reducing valve，Including valve body 6，It is provided with inlet channel 9 on described valve body 6、Outlet passageway 10、Escape orifice 1 and feedback channel 5，It is provided with decompression portion between described inlet channel 9 and outlet passageway 10，It is provided with pressure-regulating portion between escape orifice 1 and feedback channel 5，The arrival end of feedback channel 5 and the port of export communicate with inlet channel 9 and outlet passageway 10 respectively，The most threaded on described valve body 6 have pressure regulating screw 11，One end of described pressure regulating screw 11 is stretched in feedback channel 5，And the end of pressure regulating screw 11 one end of stretching into feedback channel 5 is taper，Feedback channel 5 is additionally provided with and the pressure regulating seat 4 of feedback channel 5 matched in clearance，Described pressure regulating seat 4 is hollow、End is provided with the adjusting pressuring valve core 2 of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw 11 stretch into feedback channel 5 one rectify exchange pressure valve core 2，The port of export of described escape orifice 1 communicates with outlet passageway 10，The arrival end of escape orifice 1 is communicated with feedback channel 5 by the gap between tapered end and pressure regulating seat 4 spool of pressure regulating screw 11；
Described decompression portion includes blood pressure lowering spool 7 and blood pressure lowering valve seat 8, described blood pressure lowering valve seat 8 is provided with externally threaded cylindrical-shaped structure for outside, and blood pressure lowering valve seat 8 is threaded in inlet channel 9, blood pressure lowering spool 7 is positioned at outlet passageway 10, and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat 8 and blood pressure lowering spool 7, described projection is just to described groove, blood pressure lowering spool 7 is additionally provided with diaphragm 71 away from one end of blood pressure lowering valve seat 8, the sidewall of diaphragm 71 blocks outlet passageway 10, diaphragm 71 makes to be formed feedback cavity 73 on outlet passageway 10, the port of export of described feedback channel 5 communicates with feedback cavity 73.
Concrete, the pressure regulating screw 11 of setting, pressure regulating seat 4 are pressure-regulating portion, and source of the gas is introduced by inlet channel 9, and the gap between the groove and the projection that are respectively provided with on blood pressure lowering spool 7 and blood pressure lowering valve seat 8 enters in outlet passageway 10 and completes blood pressure lowering；nullIn the feedback channel 5 arranged，The entrance of feedback channel 5 communicates with inlet channel 9，Gases at high pressure are just introduced in pressure regulating seat 4，In the port of export of feedback channel 5 and escape orifice 1，Preferably the port of export of feedback channel 5 is arranged on the front end of gas channel between pressure regulating seat 4 and pressure regulating screw 11，The i.e. arrival end of feedback channel 5 is connected with gas outlet by the air inlet on pressure regulating seat 4 respectively with the port of export，Escape orifice 1 is arranged on the rear end of described gas channel，I.e. after adjusting pressuring valve core 2，Sheathed O between the air inlet and gas outlet of pressure regulating seat 4，Escape orifice 1 is arranged on the rear end of described gas channel，So，Gap between pressure regulating seat 4 and pressure regulating screw 11 adjusts and is passed into the size of air-flow in escape orifice 1，So，The pressure of feedback channel 5 rear end force blood pressure lowering spool 7 away from or move towards blood pressure lowering valve seat 8，I.e. diaphragm 71 compression chord is deformed or/and slide along outlet passageway 10，Reach to adjust the purpose of air-flow size between blood pressure lowering spool 7 and blood pressure lowering valve seat 8，So，It is easy to obtain gas pressure size after different decompressions.
In this programme, due to the version using pressure regulating seat 4 and feedback channel 5 matched in clearance, blood pressure lowering valve seat 8 is threadeded with inlet channel 9, pressure regulating screw 11 is threadeded with valve body 6, the spool for pressure regulation and decompression is made in this utility model to separate with valve body 6 easily, it is easy to the examination and maintenance of two above spool, can make that effect of easing stress of the present utility model is controlled, operation expense is low, failture evacuation is convenient；Meanwhile, be connected with outlet passageway 10 for adjusting escape orifice 1 port of export of pressure size in feedback cavity 73, it is to avoid this utility model natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
As preferred version of the present utility model, inlet channel 9 arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel 5 arrival end, with the impurity in isolation gases at high pressure, reduce impurity to the impact of both the above spool and the quality of follow-up low pressure gas, outlet passageway 10 arranges gs-oil separator, with the water separated out after removing 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 volume of the present utility model, it is beneficial to processing of the present utility model, reducing the quantity of sealing surface on valve body 6, described outlet passageway 10, inlet channel 9, feedback channel 5 and escape orifice 1 are formed by least one section of straight hole section.Above structure is easy to be set to valve body 6 entirety, processing inlet channel 9, outlet passageway 10, feedback channel 5 and escape orifice 1 by the form of boring, the opening of above inlet channel 9, outlet passageway 10, feedback channel 5 and escape orifice 1 can be sealed by the version of pipe threaded screw fitted seal pad 3.
For promoting the feedback response speed of described blood pressure lowering spool 7, buffering blood pressure lowering spool 7 and the collision of blood pressure lowering valve seat 8, being additionally provided with two ends in described outlet passageway 10 and be respectively acting on the spring 72 of feedback cavity 73 wall and diaphragm 71, described spring 72, blood pressure lowering spool 7 and blood pressure lowering valve seat 8 are respectively positioned in same straight hole section.Arrangement above is easy to improve blood pressure lowering spool 7 by the precision of feedback channel 5 gas pressure, the installation being easy to blood pressure lowering spool 7 and spring 72 and replacing.
Embodiment 3:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for preventing the described non-artificial rotation of pressure regulating screw 11, affect outlet pressure of the present utility model, described pressure regulating screw 11 is additionally provided with two ends and is respectively acting on the elastic component 12 of pressure regulating screw 11 and valve body 6.
Owing to spring can deform in the larger context compared to other elastic components 12, for making pressure regulating screw 11 elastic component 12 during pressure regulation the most all have active force to pressure regulating screw 11, described elastic component 12 is compression spring.
Above content is to combine the further description that this utility model is made by concrete preferred implementation, it is impossible to assert that detailed description of the invention of the present utility model is confined to these explanations.For this utility model person of an ordinary skill in the technical field, other embodiments drawn under without departing from the technical solution of the utility model, should be included in protection domain of the present utility model.
Claims (5)
- null1. a natural gas pressure-reducing valve，Including valve body (6)，Inlet channel (9) it is provided with on described valve body (6)、Outlet passageway (10)、Escape orifice (1) and feedback channel (5)，It is provided with decompression portion between described inlet channel (9) and outlet passageway (10)，It is provided with pressure-regulating portion between escape orifice (1) and feedback channel (5)，The arrival end of feedback channel (5) and the port of export communicate with inlet channel (9) and outlet passageway (10) respectively，It is characterized in that，Described valve body (6) is the most threaded pressure regulating screw (11)，One end of described pressure regulating screw (11) is stretched in feedback channel (5)，And the end of pressure regulating screw (11) one end of stretching into feedback channel (5) is taper，Feedback channel (5) is additionally provided with the pressure regulating seat (4) with feedback channel (5) matched in clearance，Described pressure regulating seat (4) is hollow、End is provided with the adjusting pressuring valve core (2) of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw (11) stretch into feedback channel (5) one rectify exchange pressure valve core (2)，The port of export of described escape orifice (1) communicates with outlet passageway (10)，The arrival end of escape orifice (1) is communicated with feedback channel (5) by the gap between tapered end and the pressure regulating seat spool (2) of pressure regulating screw (11)；Described decompression portion includes blood pressure lowering spool (7) and blood pressure lowering valve seat (8), described blood pressure lowering valve seat (8) is that outside is provided with externally threaded cylindrical-shaped structure, and blood pressure lowering valve seat (8) is threaded in inlet channel (9), blood pressure lowering spool (7) is positioned at outlet passageway (10), and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat (8) and blood pressure lowering spool (7), described projection is just to described groove, blood pressure lowering spool (7) is additionally provided with diaphragm (71) away from one end of blood pressure lowering valve seat (8), the sidewall of diaphragm (71) blocks outlet passageway (10), diaphragm (71) makes to be formed feedback cavity (73) on outlet passageway (10), the port of export of described feedback channel (5) communicates with feedback cavity (73).
- A kind of natural gas pressure-reducing valve the most according to claim 1, it is characterised in that described outlet passageway (10), inlet channel (9), feedback channel (5) and escape orifice (1) are formed by least one section of straight hole section.
- A kind of natural gas pressure-reducing valve the most according to claim 2, it is characterized in that, being additionally provided with two ends in described outlet passageway (10) and be respectively acting on the spring (72) of feedback cavity (73) wall and diaphragm (71), described spring (72), blood pressure lowering spool (7) and blood pressure lowering valve seat (8) are respectively positioned in same straight hole section.
- A kind of natural gas pressure-reducing valve the most according to claim 1, it is characterised in that be additionally provided with two ends on described pressure regulating screw (11) and be respectively acting on the elastic component (12) of pressure regulating screw (11) and valve body (6).
- A kind of natural gas pressure-reducing valve the most according to claim 4, it is characterised in that described elastic component (12) is compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264202.1U CN205479550U (en) | 2016-04-01 | 2016-04-01 | Natural gas relief pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620264202.1U CN205479550U (en) | 2016-04-01 | 2016-04-01 | Natural gas relief pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479550U true CN205479550U (en) | 2016-08-17 |
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ID=56646293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620264202.1U Expired - Fee Related CN205479550U (en) | 2016-04-01 | 2016-04-01 | Natural gas relief pressure valve |
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| Country | Link |
|---|---|
| CN (1) | CN205479550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605275A (en) * | 2016-04-01 | 2016-05-25 | 成都科盛石油科技有限公司 | Natural gas pressure reduction mechanism |
-
2016
- 2016-04-01 CN CN201620264202.1U patent/CN205479550U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605275A (en) * | 2016-04-01 | 2016-05-25 | 成都科盛石油科技有限公司 | Natural gas pressure reduction mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |