CN105782527A - Gas pressure relief valve with valve cores convenient to replace - Google Patents
Gas pressure relief valve with valve cores convenient to replace Download PDFInfo
- Publication number
- CN105782527A CN105782527A CN201610198334.3A CN201610198334A CN105782527A CN 105782527 A CN105782527 A CN 105782527A CN 201610198334 A CN201610198334 A CN 201610198334A CN 105782527 A CN105782527 A CN 105782527A
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- China
- Prior art keywords
- feedback channel
- blood pressure
- pressure
- spool
- channel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
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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 gas pressure relief valve with valve cores convenient to replace. The valve comprises a valve body, wherein an air inlet channel, an air outlet channel, a breathing hole and a feedback channel are formed in the valve body, a pressure reducing part is arranged between the air inlet channel and the air outlet channel, a pressure regulating part is arranged between the breathing hole and the feedback channel, a pressure regulating screw is in threaded connection with the valve body, and a pressure regulating seat in clearance fit with the feedback channel is further arranged in the feedback channel; the pressure reducing part comprises a pressure reducing valve core and a pressure reducing valve seat, the pressure reducing valve seat adopts a cylindrical structure with an external thread arranged on the outer side, the pressure reducing valve seat is in threaded connection in the air inlet channel, the pressure reducing valve core is located in the air outlet channel, a groove with a conical section is formed in the pressure reducing valve seat, a bulge with a conical section is arranged on the pressure reducing valve core, and the bulge directly faces the groove. The valve is good in pressure relief effect controllability, low in operation and maintenance cost and convenient in troubleshooting.
Description
Technical field
The present invention relates to compression air pressure reducer field, particularly relate to a kind of gas pressure reducer being convenient for changing spool.
Background technology
Along with natural gas uses more and more extensive, various forms of air relief valve emerge in an endless stream, and natural gas depressurization valve arrangement is optimized utilization further that will promote natural gas further.For 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 being fuel with natural gas, vehicle is provided with gas cylinder for housing natural gas, and the gas pressure being finally introducing cylinder is generally several kPas, so, the air relief valve that high-pressure natural gas is reduced pressure is particularly important, simultaneously in practice, the stability of above air relief valve performance has also been reacted on the power of vehicle even in traffic safety 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, it is no matter the washing away or the 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.
Summary of the invention
Existing gas pressure reducer valve core structure optimized the problem being particularly important further for above-mentioned, the invention provides a kind of gas pressure reducer being convenient for changing spool.
nullFor solving the problems referred to above，A kind of gas pressure reducer being convenient for changing spool provided by the invention solves problem by techniques below main points: a kind of gas pressure reducer being convenient for changing spool，Including valve body，Described valve body is provided with inlet channel、Outlet passageway、Spiracle and feedback channel，It is provided with decompression portion between described inlet channel and outlet passageway，Pressure-regulating portion it is provided with between spiracle and feedback channel，The arrival end of feedback channel and the port of export communicate with inlet channel and outlet passageway respectively，Also 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；
Described decompression portion includes blood pressure lowering spool and blood pressure lowering valve seat, described blood pressure lowering valve seat is that arranged outside has 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 blood pressure lowering valve seat and blood pressure lowering spool are respectively arranged with the tapered groove in cross section and projection, described projection is just to described groove.
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 spiracle，The front end being preferably arranged between pressure regulating seat and pressure regulating screw by the port of export of feedback channel gas channel，Namely the arrival end of feedback channel is connected with gas outlet respectively through the air inlet on pressure regulating seat with the port of export，Spiracle is arranged on the rear end of described gas channel，Namely after adjusting pressuring valve core，Sheathed O between the air inlet and gas outlet of pressure regulating seat，So，The size that gap adjustment between pressure regulating seat and pressure regulating screw is passed in spiracle air-flow，So，The pressure of feedback channel rear end force blood pressure lowering spool away from or towards blood pressure lowering valve seat move，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 adopting 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 the present invention can separate with valve body with the spool of decompression easily for pressure regulation, being easy to the examination and maintenance of two above spool, the effect of easing stress that can make the present invention is controlled, operation expense is low, failture evacuation is convenient.
Preferred version as the present invention, inlet channel arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel arrival end, to isolate the impurity in gases at high pressure, reduce impurity to the impact of both the above spool and the quality being beneficial to follow-up low pressure gas, outlet passageway arranges gs-oil separator, with the water precipitated out after removing decompression or oil.
Further technical scheme is:
For ease of reducing the volume of the present invention, being beneficial to the processing of the present invention, reduce the quantity of sealing surface on valve body, described outlet passageway, inlet channel, feedback channel and spiracle form by least one section of straight hole section.Above structure is easy to arrange valve body as a whole, processing inlet channel, outlet passageway, feedback channel and spiracle by the form holed, the opening of above inlet channel, outlet passageway, feedback channel and spiracle can pass through the version of pipe threaded screw fitted seal pad and be sealed.
For promoting the feedback response speed of described blood pressure lowering spool, the collision of buffering blood pressure lowering spool and blood pressure lowering valve seat, being additionally provided with two ends in described outlet passageway and be respectively acting on outlet passageway wall and the spring of blood pressure lowering spool, described spring, blood pressure lowering spool and blood pressure lowering valve seat are respectively positioned in same straight hole section.Further, can arranging diaphragm, spring and the diaphragm interaction on rolling spool, described diaphragm and outlet passageway inner wall sealing on blood pressure lowering spool, arrangement above is easy to the precision improving blood pressure lowering spool by feedback channel gas pressure.
For preventing the non-artificial rotation of described pressure regulating screw, affect the outlet pressure of the present invention, 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, at pressure regulation process Elastic part, pressure regulating screw all have active force all the time, described elastic component is compression spring.
The method have the advantages that
Present configuration is simple, owing to adopting 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 the present invention can separate with valve body with the spool of decompression easily for pressure regulation, being easy to the examination and maintenance of two above spool, the effect of easing stress controllability that can make the present invention is good, operation expense is low, failture evacuation is convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of one specific embodiment of gas pressure reducer being convenient for changing spool of the present invention.
Figure acceptance of the bid note is respectively as follows: 1, spiracle, and 2, adjusting pressuring valve core, 3, sealing gasket, 4, pressure regulating seat, 5, feedback channel, 6, valve body, 7, blood pressure lowering spool, 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 present invention is described in further detail, but the structure of the present invention is not limited only to following example:
Embodiment 1:
nullAs shown in Figure 1，A kind of gas pressure reducer being convenient for changing spool，Including valve body 6，Described valve body 6 is provided with inlet channel 9、Outlet passageway 10、Spiracle 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 spiracle 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，Also 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；
Described decompression portion includes blood pressure lowering spool 7 and blood pressure lowering valve seat 8, described blood pressure lowering valve seat 8 has externally threaded cylindrical-shaped structure for arranged 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 blood pressure lowering valve seat 8 and blood pressure lowering spool 7 are respectively arranged with the tapered groove in cross section and projection, described projection is just to described groove.
In the present embodiment, 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；In 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 spiracle 1, preferably it is arranged between pressure regulating seat 4 and pressure regulating screw 11 by the port of export of feedback channel 5 front end of gas channel, spiracle 1 is arranged on the rear end of described gas channel, so, gap adjustment between pressure regulating seat 4 and pressure regulating screw 11 is passed in spiracle 1 size of air-flow, 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, 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 adopting 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, make the present invention can separate with valve body 6 easily for the spool of pressure regulation and decompression, being easy to the examination and maintenance of two above spool, the effect of easing stress that can make the present invention is controlled, operation expense is low, failture evacuation is convenient.
Preferred version as the present invention, inlet channel 9 arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel 5 arrival end, to isolate the impurity in gases at high pressure, reduce impurity to the impact of both the above spool and the quality being beneficial to follow-up low pressure gas, outlet passageway 10 arranges gs-oil separator, with the water precipitated out after removing decompression or oil.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as it is shown in figure 1, for ease of the volume reducing the present invention, be beneficial to the processing of the present invention, reducing the quantity of sealing surface on valve body 6, described outlet passageway 10, inlet channel 9, feedback channel 5 and spiracle 1 form by least one section of straight hole section.Above structure is easy to arrange as a whole by valve body 6, processing inlet channel 9, outlet passageway 10, feedback channel 5 and spiracle 1 by the form holed, the opening of above inlet channel 9, outlet passageway 10, feedback channel 5 and spiracle 1 can pass through the version of pipe threaded screw fitted seal pad 3 and be sealed.
For promoting the feedback response speed of described blood pressure lowering spool 7, the collision of buffering blood pressure lowering spool 7 and blood pressure lowering valve seat 8, being additionally provided with two ends in described outlet passageway 10 and be respectively acting on outlet passageway 10 wall and the spring of blood pressure lowering spool 7, described spring, blood pressure lowering spool 7 and blood pressure lowering valve seat 8 are respectively positioned in same straight hole section.Further, can arranging diaphragm, spring and the diaphragm interaction on rolling spool, described diaphragm and outlet passageway 10 inner wall sealing on blood pressure lowering spool 7, arrangement above is easy to the precision improving blood pressure lowering spool 7 by feedback channel 5 gas pressure.
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 the outlet pressure of the present invention, 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, at pressure regulation process Elastic part 12, pressure regulating screw 11 all have active force all the time, described elastic component 12 is compression spring.
Above content is the further description present invention made in conjunction with concrete preferred implementation, 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, without departing from other embodiments drawn under technical scheme, should be included in protection scope of the present invention.
Claims (5)
- null1. the gas pressure reducer being convenient for changing spool，Including valve body (6)，Described valve body (6) is provided with inlet channel (9)、Outlet passageway (10)、Spiracle (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 spiracle (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 above also 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 (11) is additionally provided with the pressure regulating seat (4) with feedback channel (11) 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)；Described decompression portion includes blood pressure lowering spool (7) and blood pressure lowering valve seat (8), described blood pressure lowering valve seat (8) has externally threaded cylindrical-shaped structure for arranged 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 blood pressure lowering valve seat (8) and blood pressure lowering spool (7) are respectively arranged with the tapered groove in cross section and projection, described projection is just to described groove.
- 2. a kind of gas pressure reducer being convenient for changing spool according to claim 1, it is characterised in that described outlet passageway (10), inlet channel (9), feedback channel (5) and spiracle (1) form by least one section of straight hole section.
- 3. a kind of gas pressure reducer being convenient for changing spool 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 outlet passageway (10) wall and the spring of blood pressure lowering spool (7), described spring, blood pressure lowering spool (7) and blood pressure lowering valve seat (8) are respectively positioned in same straight hole section.
- 4. a kind of gas pressure reducer being convenient for changing spool 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).
- 5. a kind of gas pressure reducer being convenient for changing spool 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 |
|---|---|---|---|
| CN201610198334.3A CN105782527A (en) | 2016-04-01 | 2016-04-01 | Gas pressure relief valve with valve cores convenient to replace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198334.3A CN105782527A (en) | 2016-04-01 | 2016-04-01 | Gas pressure relief valve with valve cores convenient to replace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105782527A true CN105782527A (en) | 2016-07-20 |
Family
ID=56395363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610198334.3A Pending CN105782527A (en) | 2016-04-01 | 2016-04-01 | Gas pressure relief valve with valve cores convenient to replace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105782527A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761682A (en) * | 2010-02-09 | 2010-06-30 | 费斯托(中国)有限公司 | Soft starting valve |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN202001413U (en) * | 2011-01-24 | 2011-10-05 | 浙江海宏液压科技股份有限公司 | Pilot valve mechanism of unloading valve |
| US20110277854A1 (en) * | 2009-02-02 | 2011-11-17 | Hiroaki Yamamoto | Pressure reducing valve |
| CN203655767U (en) * | 2014-01-21 | 2014-06-18 | 宁波市镇海华力液压机电有限公司 | Electromagnetic control relief valve |
| CN205479549U (en) * | 2016-04-01 | 2016-08-17 | 成都科盛石油科技有限公司 | Gaseous relief pressure valve convenient to change case |
-
2016
- 2016-04-01 CN CN201610198334.3A patent/CN105782527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110277854A1 (en) * | 2009-02-02 | 2011-11-17 | Hiroaki Yamamoto | Pressure reducing valve |
| CN101761682A (en) * | 2010-02-09 | 2010-06-30 | 费斯托(中国)有限公司 | Soft starting valve |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN202001413U (en) * | 2011-01-24 | 2011-10-05 | 浙江海宏液压科技股份有限公司 | Pilot valve mechanism of unloading valve |
| CN203655767U (en) * | 2014-01-21 | 2014-06-18 | 宁波市镇海华力液压机电有限公司 | Electromagnetic control relief valve |
| CN205479549U (en) * | 2016-04-01 | 2016-08-17 | 成都科盛石油科技有限公司 | Gaseous relief pressure valve convenient to change case |
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Application publication date: 20160720 |