CN203742834U - Pressure reducer - Google Patents
Pressure reducer Download PDFInfo
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- CN203742834U CN203742834U CN201320860941.3U CN201320860941U CN203742834U CN 203742834 U CN203742834 U CN 203742834U CN 201320860941 U CN201320860941 U CN 201320860941U CN 203742834 U CN203742834 U CN 203742834U
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- Prior art keywords
- level
- chamber
- spool
- flexible sheet
- pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a pressure reducer. When gas pressure in a second-level cavity is boosted, a feedback cavity exerts pressure on a second-level elastic membrane to drive a second-level valve element to move. The feedback cavity is communicated with the second-level cavity through a feedback connector. An opening of the feedback connector is located in a gas outlet connector, so that pressure of the feedback cavity is potential energy in the gas outlet connector. According to the energy conservation law, flowing speed of fluid is increased, kinetic energy of the fluid is increased, and the potential energy of the fluid is decreased at a small-circulation-area position. Due to the fact that the circulation area of the gas outlet connector is much smaller than the sectional area of the second-level cavity, pressure in the feedback cavity is smaller than pressure of the second-level cavity. Therefore, thrust exerted on the second-level elastic membrane by the feedback cavity is small, which makes the opening degree of the second-level valve element be larger than that of pressure of the second-level cavity, and the gas inlet amount of the second-level cavity is increased. Therefore, when the flow amount of the gas outlet connector is large, the gas inlet amount of the second-level cavity can be increased to guarantee pressure stability of the second-level cavity, and then stable output of fuel gas can be guaranteed.
Description
Technical field
The utility model relates to the application technology of gas internal-combustion engine, particularly relates to a kind of decompressor.
Background technique
Discharge still less, the gas internal-combustion engine of more environmental protection is just fast-developing, to reduce the destruction to environment.The internal-combustion engine of this kind adopts the gases such as hydrogen, rock gas as fuel.For easy to carry, gaseous fuel is packaged in the gas cylinder of high pressure.Because gas cylinder internal pressure is higher, and that cylinder combustion is burnt required pressure is less, therefore need decompressor that the gas that is stored in the elevated pressures in gas cylinder is reduced to low-pressure gas.
At present, traditional decompressor subject matter is air outlet pressure transient, and in air outlet flow increase process, outlet pressure can decline acutely.For example, if air outlet pressure is set to 0.25MPa, increase to the process of 40 mark sides from 0 at flow, its air outlet pressure can increase and decline with flow.During to 40 mark side flow, the pressure of air outlet can drop to below 0.15MPa conventionally.Air outlet pressure is little, and flow velocity is slow.Because outlet pressure is violent with changes in flow rate, thereby cause the output of combustion gas unstable.
Model utility content
Based on this, be necessary to provide a kind of decompressor that keeps the stable output of combustion gas.
A kind of decompressor, comprise the housing that is hollow structure, the air input joint and the air outlet adapter that are communicated with described housing, the inside of described housing is provided with one-level dividing plate and secondary dividing plate, to form one-level chamber and secondary chamber in described housing, a described secondary dividing plate dorsad side of described secondary chamber is also provided with secondary flexible sheet, with and described secondary dividing plate between form feedback cavity, described air input joint is communicated with described one-level chamber, described air outlet adapter is communicated with described secondary chamber, described feedback cavity is communicated with described secondary chamber by feedback joint, and the opening of described feedback joint is positioned at described air outlet adapter, described one-level dividing plate is provided with the one-level opening that is communicated with described one-level chamber and described secondary chamber, described decompressor also comprises:
One-level spool, is located between described one-level chamber and described air input joint, with by the isolation of described air input joint and described one-level chamber, described one-level spool under the effect of preset pressure slidably so that described air input joint is communicated with described one-level chamber;
Secondary spool, be arranged in described secondary dividing plate, one end of described secondary spool is fixedly connected with described secondary flexible sheet, and the other end is located at described one-level opening, described secondary spool along the direction towards described secondary flexible sheet slidably, to close described one-level opening; And
Elastic component, is contained in described housing, and one end is connected with described secondary flexible sheet, and described elastic component applies the elastic force of a sensing secondary dividing plate to described secondary flexible sheet, so that described secondary spool is opened described one-level opening;
Wherein, in the time that the air pressure in described feedback cavity increases, described secondary flexible sheet is the edge direction protrusion of described secondary dividing plate dorsad under gas pressure, to drive described secondary spool to slide along the direction towards described secondary flexible sheet, and then closes described one-level opening.
In an embodiment, the sidewall of described housing is provided with gas cylinder therein, and described gas cylinder offers the air guide chamber being communicated with described one-level chamber, and described air input joint is communicated with described one-level chamber by described gas cylinder.
In an embodiment, also comprise solenoid valve therein, the spool of described solenoid valve is arranged between described air input joint and described air guide chamber, and the spool of described solenoid valve is scalable, to close or to open described air input joint.
In an embodiment, described one-level spool is contained in described air guide chamber therein, and along described air guide chamber slidably.
In an embodiment, described elastic component is Compress Spring therein, and one end of described Compress Spring is connected to the inwall of described housing, one end and described secondary flexible sheet butt.
In an embodiment, also comprise knob therein, described knob and described shell screw togather, and with described Compress Spring butt, described knob is rotatable with respect to described housing, to regulate the decrement of described Compress Spring.
In an embodiment, also comprise return unit therein, described return unit and described one-level spool can support, and described one-level spool slides, so that described air input joint is while being communicated with described one-level chamber, described return unit provides a restoring force for described one-level spool.
In an embodiment, described one-level is provided with one-level flexible sheet in chamber therein, and described return unit comprises:
L shaped butt plate, is contained in described one-level chamber, and one end of described butt plate is located on described housing rotationally;
Telescopic mast, is contained in described one-level chamber, and one end of described telescopic mast is fixed on described one-level flexible sheet, and the other end is connected away from one end of described housing rotationally with described butt plate;
Returnning spring, the inwall of one end and described housing supports, the other end and described one-level flexible sheet butt, described Returnning spring is positioned at a described one-level flexible sheet side of described telescopic mast dorsad.
Above-mentioned decompressor, in the time that the air pressure in secondary chamber raises, exerts pressure to secondary flexible sheet by feedback cavity, and then drives secondary valve core movement.Feedback cavity is communicated with secondary chamber by feedback joint, and feeds back the opening of joint and be positioned at air outlet adapter, therefore the pressure of feedback cavity is the potential energy in air outlet adapter.According to law of conservation of energy, at the little place of circulation area, rate of flow of fluid rises, and kinetic energy rises, and potential energy declines.Because the circulation area of air outlet adapter is much smaller than the sectional area of secondary chamber, therefore the pressure in feedback cavity is little with respect to the pressure of secondary chamber.Therefore, feedback cavity is also less to the thrust of secondary flexible sheet, thereby the opening ratio of secondary spool directly adopts the aperture of secondary chamber pressure to want large, has improved the air inflow of secondary chamber.Therefore, in the time that air outlet adapter flow is larger, can increase the air inflow of secondary chamber, to ensure secondary chamber pressure stability, thereby keep the stable output of combustion gas.
Brief description of the drawings
Fig. 1 is the structural representation of decompressor in the utility model preferred embodiment;
Fig. 2 is the sectional view of decompressor shown in Fig. 1.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.In accompanying drawing, provide preferred embodiment of the present utility model.But the utility model can be realized in many different forms, be not limited to embodiment described herein.On the contrary, providing these embodiments' object is to make to the understanding of disclosure of the present utility model more thoroughly comprehensively.
It should be noted that, when element is called as " being fixed on " another element, it can be directly on another element or also can have an element placed in the middle.When an element is considered to " connection " another element, it can be directly connected to another element or may have centering elements simultaneously.
Unless otherwise defined, all technology that use are herein identical with the implication that belongs to the common understanding of those skilled in the art of the present utility model with scientific terminology.The term using in specification of the present utility model herein, just in order to describe the object of specific embodiment, is not intended to be restriction the utility model.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
Refer to Fig. 1 and Fig. 2, the decompressor 100 in the utility model preferred embodiment comprises housing 110, air input joint 120, air outlet adapter 130, one-level spool 140, return unit 150, secondary spool 160, elastic component 170, solenoid valve 180 and knob 190.
Housing 110 is generally cast by metal, is hollow structure.The inside of housing 110 is provided with one-level dividing plate 111 and secondary dividing plate 113, with in the interior formation one-level of housing 110 chamber 112 and secondary chamber 114.A secondary dividing plate 113 dorsad side of secondary chamber 114 is also provided with secondary flexible sheet 115, with and secondary dividing plate 113 between form feedback cavity 116.Described feedback cavity 116 is communicated with secondary chamber 114 by feedback joint 1161, and the opening of feedback joint 1161 is positioned at air outlet adapter 130, and one-level dividing plate 111 is provided with the one-level opening (not shown) that is communicated with one-level chamber 112 and secondary chamber 114.
Air input joint 120 and air outlet adapter 130 are all communicated with housing 110.Concrete, air input joint 120 is communicated with one-level chamber 112, and air outlet adapter 130 is communicated with secondary chamber 114.Combustion gas enters one-level chamber 112 through air input joint 120, then enters secondary chamber 114 from one-level chamber 112, finally exports by air outlet adapter 130.Specifically in the present embodiment, the sidewall of housing 110 is provided with gas cylinder 117, and gas cylinder 117 offers the air guide chamber 1172 being communicated with one-level chamber 112, and air input joint 120 is communicated with one-level chamber 112 by gas cylinder 117.Be appreciated that in other embodiments, gas cylinder 117 can omit.
One-level spool 140 is located between one-level chamber 112 and air input joint 120, so that air input joint 120 and one-level chamber 112 are isolated, one-level spool 140 under the effect of preset pressure slidably so that air input joint 120 is communicated with one-level chamber 112.Specifically in the present embodiment, one-level spool 140 is contained in air guide chamber 1172, and along air guide chamber 1172 slidably.One-level spool 140 is isolated air input joint 120 and one-level chamber 112 under normal conditions, and in the time that combustion gas enters from air input joint 120, air pressure raises, and so that one-level spool 140 is washed open, thereby combustion gas is entered in one-level chamber 112.
In the present embodiment, the spool 181 of solenoid valve 180 is arranged between air input joint 120 and air guide chamber, and the spool 181 of solenoid valve 180 is scalable, to close or to open air input joint 120.In the time of needs combustion gas, solenoid valve 180 is switched on, so that air input joint 120 is opened; In the time not needing combustion gas, solenoid valve 180 power-off, spool 181 resets under the effect of elastic component 183, and air input joint 120 cuts out.Be appreciated that in other embodiments, solenoid valve 180 omits, and does not affect the function of decompressor 100.
Return unit 150 can support with one-level spool 140, and one-level spool 140 slides, so that air input joint 120 is while being communicated with one-level chamber 112, return unit 150 provides a restoring force for one-level spool 140.Therefore, when the air pressure in one-level chamber 112 is increased to after predefined value, one-level spool 140 resets under the effect of return unit 150, air input joint 120 and one-level chamber 112 is isolated, thereby prevent that the air pressure in one-level chamber 112 is too high.
In the present embodiment, be provided with one-level flexible sheet 119 in one-level chamber 112, return unit 150 comprises butt plate 151, telescopic mast 153 and Returnning spring 155.
Butt plate 151 is L-shaped, is contained in one-level chamber 112.One end of butt plate 151 is located on housing 110 rotationally.Telescopic mast 153 is contained in one-level chamber 112, and one end of telescopic mast 153 is fixed on one-level flexible sheet 119, and the other end is connected away from one end of housing 110 rotationally with butt plate 151.The inwall of one end of Returnning spring 155 and housing 110 supports, the other end and one-level flexible sheet 119 butts, and Returnning spring 155 is positioned at one-level flexible sheet 119 side of telescopic mast 153 dorsad.
In the time that combustion gas continues to enter one-level chamber 112, the air pressure in one-level chamber 112 raises, thereby oppresses one-level flexible sheet 119 to Returnning spring 155 deformation, and compression reseting spring 155.Further, flexible sheet 119 drives telescopic mast 153 to move, and telescopic mast 153 drives butt plate 151 to rotate, the butt plate of rotation 151 and one-level spool 140 butts, and order about one-level spool 140 and reset, thereby air input joint 120 and one-level chamber 112 are isolated.And in the time that air pressure in one-level chamber 112 reduces, Returnning spring 155 resets, one-level spool 140 again can be in the effect lower slider of air input joint 120 gas pressures, thereby makes combustion gas again enter one-level chamber 112.
Because return unit 150 is leverage, reduce the arm of force of air input joint 120 internal air pressure active forces, the impact of the variation that can effectively reduce suction pressure on one-level chamber 112 internal pressures.Under the effect of return unit 150, the suction pressure of air input joint 120 changes in 1 to 20MPa scope, and 112 pressure surges of one-level chamber are less than 0.2MPa, thereby is conducive to maintain the stable of one-level chamber 112 internal air pressures.
Secondary spool 160 is arranged in secondary dividing plate 113, and one end of secondary spool 160 is fixedly connected with secondary flexible sheet 115, and the other end is located at one-level opening.Secondary spool 160 along the direction towards secondary flexible sheet 115 slidably, to close one-level opening.Under normality, secondary spool 160 not with the edge butt of one-level opening, therefore one-level opening is opened, combustion gas can enter secondary chamber 114 from one-level chamber 112.
Elastic component 170 is contained in housing 110, and one end is connected with secondary flexible sheet 115.Elastic component 170 applies the elastic force of a sensing secondary dividing plate 113 to secondary flexible sheet 115, so that secondary spool 160 is opened one-level opening.Wherein, in the time that the air pressure in feedback cavity 116 increases, secondary flexible sheet 115 is the edge direction protrusion of secondary dividing plate 113 dorsad under gas pressure, to drive described secondary spool 160 to slide along the direction towards secondary flexible sheet 115, and then closes one-level opening.After one-level opening is closed, combustion gas can not enter secondary chamber 114 from one-level chamber 112, and along with air outlet adapter 130 continues output, the air pressure in secondary chamber 114 reduces, and then the air pressure of feedback cavity 116 is also reduced.Further, secondary flexible sheet 115 resets under the effect of elastic component 170, and drives secondary spool 160 along the direction slip to secondary flexible sheet 115 dorsad, thereby opens one-level opening.In addition, combustion gas can enter secondary chamber 114 from one-level chamber 112, thereby makes the air pressure in secondary chamber 114 keep stable.
In the present embodiment, elastic component 170 is Compress Spring, and one end of Compress Spring is connected to the inwall of housing 110, one end and secondary flexible sheet 115 butts.Further, knob 190 screws togather with shell, and with Compress Spring butt, knob 190 is rotatable with respect to housing 110, to regulate the decrement of Compress Spring.
By regulating the decrement of Compress Spring, the pretightening force of capable of regulating Compress Spring.In the time needing secondary chamber 114 to there is higher output pressure, can screw knob 190, to increase pretightening force; In the time need to reducing the output pressure of secondary chamber 114, can screw out knob 190, to reduce pretightening force.Therefore, can adjust the delivery pressure of secondary chamber 114 according to the actual requirements by knob 190, thereby improve the flexibility that decompressor 100 uses.
Decompressor 100, in the time that the air pressure in secondary chamber 114 raises, exerts pressure to secondary flexible sheet 115 by feedback cavity 116, and then drives secondary spool 160 to move.Feedback cavity 116 is communicated with secondary chamber 114 by feedback joint 1161, and feeds back the opening of joint 1161 and be positioned at air outlet adapter 130, therefore the pressure of feedback cavity 116 is the potential energy of air outlet adapter 130 interior gases.According to law of conservation of energy, at the little place of circulation area, rate of flow of fluid rises, and kinetic energy rises, and potential energy declines.Because the circulation area of air outlet adapter 130 is much smaller than the sectional area of secondary chamber 114, therefore the pressure in feedback cavity 116 is little with respect to the pressure of secondary chamber 114.Therefore, feedback cavity 116 is also less to the thrust of secondary flexible sheet 115, thereby the opening ratio of secondary spool 160 directly adopts the aperture of secondary chamber 114 pressure to want large, has improved the air inflow of secondary chamber 114.Therefore, when larger, can increase the air inflow of secondary chamber 114 at air outlet adapter 130 flows, to ensure secondary chamber 114 pressure stabilitys, thereby keep the stable output of combustion gas.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. a decompressor, comprise the housing that is hollow structure, the air input joint and the air outlet adapter that are communicated with described housing, it is characterized in that, the inside of described housing is provided with one-level dividing plate and secondary dividing plate, to form one-level chamber and secondary chamber in described housing, a described secondary dividing plate dorsad side of described secondary chamber is also provided with secondary flexible sheet, with and described secondary dividing plate between form feedback cavity, described air input joint is communicated with described one-level chamber, described air outlet adapter is communicated with described secondary chamber, described feedback cavity is communicated with described secondary chamber by feedback joint, and the opening of described feedback joint is positioned at described air outlet adapter, described one-level dividing plate is provided with the one-level opening that is communicated with described one-level chamber and described secondary chamber, described decompressor also comprises:
One-level spool, is located between described one-level chamber and described air input joint, with by the isolation of described air input joint and described one-level chamber, described one-level spool under the effect of preset pressure slidably so that described air input joint is communicated with described one-level chamber;
Secondary spool, be arranged in described secondary dividing plate, one end of described secondary spool is fixedly connected with described secondary flexible sheet, and the other end is located at described one-level opening, described secondary spool along the direction towards described secondary flexible sheet slidably, to close described one-level opening; And
Elastic component, is contained in described housing, and one end is connected with described secondary flexible sheet, and described elastic component applies the elastic force of a sensing secondary dividing plate to described secondary flexible sheet, so that described secondary spool is opened described one-level opening;
Wherein, in the time that the air pressure in described feedback cavity increases, described secondary flexible sheet is the edge direction protrusion of described secondary dividing plate dorsad under gas pressure, to drive described secondary spool to slide along the direction towards described secondary flexible sheet, and then closes described one-level opening.
2. decompressor according to claim 1, is characterized in that, the sidewall of described housing is provided with gas cylinder, and described gas cylinder offers the air guide chamber being communicated with described one-level chamber, and described air input joint is communicated with described one-level chamber by described gas cylinder.
3. decompressor according to claim 2, is characterized in that, also comprises solenoid valve, and the spool of described solenoid valve is arranged between described air input joint and described air guide chamber, and the spool of described solenoid valve is scalable, to close or to open described air input joint.
4. decompressor according to claim 3, is characterized in that, described one-level spool is contained in described air guide chamber, and along described air guide chamber slidably.
5. decompressor according to claim 1, is characterized in that, described elastic component is Compress Spring, and one end of described Compress Spring is connected to the inwall of described housing, one end and described secondary flexible sheet butt.
6. decompressor according to claim 5, is characterized in that, also comprises knob, and described knob and described shell screw togather, and with described Compress Spring butt, described knob is rotatable with respect to described housing, to regulate the decrement of described Compress Spring.
7. decompressor according to claim 1, is characterized in that, also comprises return unit, described return unit and described one-level spool can support, described one-level spool slides, so that described air input joint is while being communicated with described one-level chamber, described return unit provides a restoring force for described one-level spool.
8. decompressor according to claim 7, is characterized in that, described one-level is provided with one-level flexible sheet in chamber, and described return unit comprises:
L shaped butt plate, is contained in described one-level chamber, and one end of described butt plate is located on described housing rotationally;
Telescopic mast, is contained in described one-level chamber, and one end of described telescopic mast is fixed on described one-level flexible sheet, and the other end is connected away from one end of described housing rotationally with described butt plate;
Returnning spring, the inwall of one end and described housing supports, the other end and described one-level flexible sheet butt, described Returnning spring is positioned at a described one-level flexible sheet side of described telescopic mast dorsad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860941.3U CN203742834U (en) | 2013-12-24 | 2013-12-24 | Pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320860941.3U CN203742834U (en) | 2013-12-24 | 2013-12-24 | Pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742834U true CN203742834U (en) | 2014-07-30 |
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ID=51342644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320860941.3U Expired - Fee Related CN203742834U (en) | 2013-12-24 | 2013-12-24 | Pressure reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696885A (en) * | 2013-12-24 | 2014-04-02 | 深圳市华江科技有限公司 | Pressure reducer |
| CN109931427A (en) * | 2017-12-19 | 2019-06-25 | 摩托尼科株式会社 | Hydrogen second depressurized electronic type regulator |
-
2013
- 2013-12-24 CN CN201320860941.3U patent/CN203742834U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696885A (en) * | 2013-12-24 | 2014-04-02 | 深圳市华江科技有限公司 | Pressure reducer |
| CN109931427A (en) * | 2017-12-19 | 2019-06-25 | 摩托尼科株式会社 | Hydrogen second depressurized electronic type regulator |
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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: 20140730 Termination date: 20141224 |
|
| EXPY | Termination of patent right or utility model |