CN1715633A - Gas mixing valve for gas burning engine - Google Patents
Gas mixing valve for gas burning engine Download PDFInfo
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- CN1715633A CN1715633A CNA2004100257572A CN200410025757A CN1715633A CN 1715633 A CN1715633 A CN 1715633A CN A2004100257572 A CNA2004100257572 A CN A2004100257572A CN 200410025757 A CN200410025757 A CN 200410025757A CN 1715633 A CN1715633 A CN 1715633A
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- gas
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- blast tube
- upper diaphragm
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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 gas mixing valve for gas burning engine consists of mainly pressure reducing stabilizer, safe gas-off unit and mechanical speed regulator. The inflammable gas entering the lower membrane chamber has pressure reduced and stabilized by the combined effect of rocker lever, lower membrane, spring, regulating screw and locking nut. During the operation of the engine, the cylinder produces certain vacuum to suck down the upper membrane, so that the fuel gas passage on the membrane rod is opened for the fuel gas to the throat via the monoway hole. If the engine stops, the fuel gas passage will be closed owing to no vacuum, resulting in no fuel gas leakage. The fuel gas through the throat and air sucked through the choke valve are mixed and the mixed gas is sucked into the cylinder for burning, and the throttle has opening automatically regulated with the rotation speed so as to stabilize the rotation speed of the engine.
Description
Technical field
The present invention relates to a kind of gas mixer, especially relate to a kind of gas mixing valve that is used for gas engine, suitable combustion gas comprises inflammable gass such as rock gas, liquefied petroleum gas (LPG), biogas.
Background technique
At present both at home and abroad the general small-size motor major part of producing has adopted the type of making fuel with gasoline or diesel oil, the power of using such as generator set, integral type water pump, mowing machine and off roader etc.As everyone knows, these motor institute discharge tail gas are quite serious to the pollution of atmosphere, jeopardized people's physical and mental health, also limited the developing of its international market.In order to change above-mentioned condition, people attempt to adopt inflammable gas to come gasoline replacing and diesel oil as the energy, such as rock gas, liquefied petroleum gas (LPG), biogas etc.,, just smaller to the pollution of environment because pollutant seldom in the tail gas that produces behind these gas fuel burnings.Through transforming, the part automobile is at using gases fuel now, gaseous fuel mixing device Perfect in shape and function on its motor, control accurately, but complex structure, cost costliness be difficult to spread on the general small-size motor, restricted its development.The key of gas engine is combustion gas and Air mixing device (gas mixing valve).For the general small-size motor, this gas mixing valve must be simple and practical, and cost is lower.Therefore be necessary to develop a kind of novel simple and practical gas mixing valve to satisfy the needs in market.Patent retrieval is found, publication number is that 2344563 patent " gaseous fuel mixture control " discloses the structure that a kind of gas mixes, it comprises housing and joint air door assembly, be provided with the flowmeter valve block in joint air door the place ahead, this flowmeter valve block is fixed on the rotating eccentric flowmeter axle that is provided with, be provided with the gas pipeline body that communicates with the housing pipeline in the outside of housing, in the gas pipeline body, be provided with the Flow-rate adjustment sleeve that communicates with its pipeline, in the Flow-rate adjustment sleeve, be provided with the gas flow Control Shaft, the double-action mechanism control air of forming by two rocking arms and connecting rod and the air inlet ratio of combustion gas.This class device often has the following disadvantages, and mechanical engagement is relatively poor, and reliability is not high, controls understablely, makes gaseous combustion insufficient, and vibrations are big, and noise is big, causes mechanical failure etc. easily, thereby Applicable scope is also smaller.
Summary of the invention
The present invention has solved mainly in the prior art that the gas mixing valve mechanical engagement of existing general small-size gas engine is relatively poor, and reliability is not high, controls understablely, causes the technical problem of mechanical failure etc. easily.
The present invention has solved also that the gas mixing valve of existing gas engine involves great expense in the prior art, and is higher to the common engine reforming cost, is difficult to popularize the technical problem that waits.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: the gas mixing valve of gas engine mainly is made of decompression stable-pressure device, safe gas stopping device, mechanical adjustable speed drive.
In the described decompression stable-pressure device, fuel gas inlet is arranged on the valve body, and extension is conducted with blast tube in valve body, described blast tube other port is provided with rocker lever; the other end of rocker lever is provided with push rod, and the base portion of described push rod is arranged on down on the diaphragm, is provided with down diaphragm spring below the following diaphragm; the base portion of the following diaphragm spring below the described diaphragm down is provided with the adjustment bolt and lock nut, and the cavity between described diaphragm upside down and the valve body constitutes lower membrane chamber.Inflammable gas enters lower membrane chamber by fuel gas inlet, when entering lower membrane chamber, be subjected to rocker lever, diaphragm, the synergy of diaphragm spring, adjustment bolt and lock nut down down, inflammable gas is reduced pressure, by can adjusting gaseous-pressure in the diaphragm chamber, and then make its voltage stabilizing to adjusting adjustment that bolt and lock nut gives tight power.
In the described safe gas stopping device, the blast tube that is conducted with lower membrane chamber extends upward with membrane rod slide and is conducted, be provided with the film bar in the described membrane rod slide, its base portion is arranged on the upper diaphragm, be provided with the upper diaphragm spring below the upper diaphragm, the upper diaphragm spring is arranged on the upper diaphragm spring pedestal, the downside of described upper diaphragm and the cavity between the valve body constitute the upper diaphragm chamber, the vacuum passage that is conducted with the upper diaphragm chamber is connected to cylinder, offers the through hole that is conducted with atmosphere on the upside of described upper diaphragm and the cavity wall between the valve body.The lower end side of the upper diaphragm vacuum that cylinder produces during with engine running is connected, and the upper end side of upper diaphragm communicates with atmosphere.When engine running, motor will produce certain degree of vacuum upper diaphragm will be inhaled down, and the blast tube above the film bar is opened, and combustion gas can enter into the trunnion place by the unidirectional hole at trunnion place.When if motor does not turn round, cylinder will not produce degree of vacuum, and the effect that the film bar is subjected to the upper diaphragm spring up resets and closes blast tube, just not have combustion gas to reveal.
In the described mechanical adjustable speed drive, the blast tube upper end-hole that is conducted with membrane rod slide is provided with unidirectional hole, is trunnion on it, and a side of described trunnion is provided with chock plate, and opposite side is provided with closure, and described closure also is connected to cylinder.The inflammable gas that comes out from the unidirectional hole of trunnion enters trunnion, be mixed into inflammable mixture with chock plate place inhaled air, and then the cylinder that is inhaled into motor by closure burns, variation along with engine speed, the throttle opening size can be regulated automatically, thereby the effect of stablizing engine speed can be played.
As preferably, described blast tube another port is opened in the lower membrane chamber, and the end of its lower shake-changing arm lever is provided with sealing block; Described film bar and membrane rod slide are slippery, and the upper end of film bar also is provided with sealing block.According to the gaseous-pressure size, the sealing block of rocker lever end can seal or open the blast tube another port that is opened in the lower membrane chamber automatically, the blast tube lower end mouth that the sealing block of film bar upper end can seal automatically or unlatching and membrane rod slide are conducted.
As preferably, the upper end of described film bar is a little more than the upper end open of the blast tube that is conducted with lower membrane chamber.
Therefore, the present invention has following advantage: 1. and simple in structure, rationally distributed, design more ingenious; 2. whole mechanical engagement is better, and the reliability height is controlled very stablely, and gaseous combustion is abundant, shakes for a short time, and noise is little, and mechanical failure is few; 3. Applicable scope is bigger, and combustion gas applicatory comprises inflammable gass such as rock gas, liquefied petroleum gas (LPG), biogas, is applicable to motor that generator set, integral type water pump, mowing machine and off roader are used etc.; 4. cost of production is low, and common engine transformation ratio is easier to, and popularizes easily.
Description of drawings
Accompanying drawing 1 is the sectional structure schematic representation of a kind of plan view of the present invention;
Accompanying drawing 2 is a kind of left view structural representations of the present invention;
Accompanying drawing 3 is a kind of assembling principle schematic of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment 1: referring to Fig. 1 and Fig. 3, structure of the present invention mainly contains decompression stable-pressure device, safe gas stopping device, three parts of mechanical adjustable speed drive, and these three devices connect each other and are integral.Wherein, fuel gas inlet 17 is arranged on the valve body 19, and extension is conducted with blast tube 16a in valve body 19, blast tube 16a other port is provided with rocker lever 6; end of rocker lever 6 is provided with sealing block 24; according to the gaseous-pressure size; the sealing block 24 of rocker lever end can seal or open the blast tube 16a port that is opened in the lower membrane chamber 18 automatically; the other end of rocker lever 6 is provided with push rod 20; base portion of push rod 20 is arranged on down on the diaphragm 8; be provided with down diaphragm spring 7 below the following diaphragm 8; base portion of the following diaphragm spring 7 below the following diaphragm 8 is provided with adjusts bolt 9 and locking nut 10, and the cavity between following diaphragm 8 upsides and the valve body 19 constitutes lower membrane chamber 18.The blast tube 16b that is conducted with lower membrane chamber 18 extends upward with membrane rod slide 2 and is conducted, be provided with film bar 21 in the membrane rod slide 2, film bar 21 is slippery with membrane rod slide 2, the upper end of film bar 21 is a little more than the upper end open of the blast tube 16b that is conducted with lower membrane chamber 18, the base portion of film bar 21 is arranged on the upper diaphragm 3, the upper end of film bar 21 is provided with sealing block 24, according to the gaseous-pressure size, the blast tube 16c lower end mouth that the sealing block 24 of film bar 21 upper ends can seal automatically or unlatching and membrane rod slide 2 are conducted, be provided with upper diaphragm spring 4 below the upper diaphragm 3, upper diaphragm spring 4 is arranged on the upper diaphragm spring pedestal 5, cavity between the downside of upper diaphragm 3 and the valve body 19 constitutes upper diaphragm chamber 22, the vacuum passage 13 that is conducted with upper diaphragm chamber 22 is connected to cylinder 23, offers the through hole 14 that is conducted with atmosphere on the cavity wall between the upside of upper diaphragm 3 and the valve body 19.The lower end side of upper diaphragm 3 vacuum that cylinder produces during with engine running by vacuum passage 13 is connected, and the upper end side of upper diaphragm 3 communicates with atmosphere by through hole 14.The blast tube 16c upper end-hole that is conducted with membrane rod slide 2 is provided with unidirectional hole 15, is trunnion 1 on it, and a side of trunnion 1 is provided with chock plate 12, and opposite side is provided with closure 11, and described closure 11 also is connected to cylinder 13.
Its working procedure is such: referring to Fig. 1, Fig. 2, Fig. 3, inflammable gas is connected to fuel gas inlet 17, after opening air valve, inflammable gas with certain pressure enters lower membrane chamber 18 by blast tube 16a, the pressure of lower membrane chamber 18 also rises rapidly, at this moment, motor does not start, film bar 21 is sealed the blast tube 16b upper end-hole that is conducted with lower membrane chamber 18, the effect of being stressed of following diaphragm 8 is inhaled down, following diaphragm spring 7 is compressed, and push rod 20 drives rocker lever 6 and rotates, and the sealing block 24 of rocker lever 6 the other end is sealed blast tube 16a port, lower membrane chamber 18 stops air inlet, the pressure of the gas pressure in the lower membrane chamber and following diaphragm spring reaches a kind of dynamic balance, can adjust gaseous-pressure in the lower membrane chamber by the pretightening force of adjustment bolt 9 and locking nut 10, reaches decompression, the purpose of voltage stabilizing.In the time of ato unit, the cylinder 23 of motor produces certain degree of vacuum, make upper diaphragm 3 indoor air pressure descend by vacuum passage 13, be lower than barometric pressure, upper diaphragm 3 upsides are conducted by through hole 14 and atmosphere, so upper diaphragm 3 is inhaled down by the atmospheric pressure effect, upper diaphragm spring 4 is compressed, upper diaphragm 3 is inhaled drive of following time film bar 21 and is moved down, blast tube 16b in the membrane rod slide 2 is opened, inflammable gas can enter blast tube 16b, enter into trunnion 1 place by unidirectional hole 15, the air that is inhaled into chock plate 12 places mixes, and becomes inflammable mixture, and then the cylinder 23 that is inhaled into motor by closure 11 burns, and motor is activated.In the normal working of engine process, cylinder continues to produce certain degree of vacuum, and the blast tube in the membrane rod slide is in the state of opening always.Along with the variation of engine speed, can regulate the throttle opening size automatically, thereby can play the effect of stablizing engine speed.
When to stall, cylinder no longer produces degree of vacuum, upper diaphragm this moment pressure up and down is balance no longer, the upper diaphragm spring reset, upper diaphragm is also upwards resetted by the effect of upper diaphragm spring pressure, the film bar with on move, the blast tube in the membrane rod slide is sealed, the sealing block 24 of film masthead end is sealing and the blast tube 16c lower end mouth that membrane rod slide 2 is conducted automatically, does not just have inflammable gas and reveals.
The whole mechanical engagement of the present invention is better, the reliability height, control very stable, gaseous combustion is abundant, shake for a short time, noise is little, and mechanical failure is few, inflammable gass such as applicable rock gas, liquefied petroleum gas (LPG), biogas are applicable to motor that generator set, integral type water pump, mowing machine and off roader are used etc.
Claims (4)
1. gas mixing valve that is used for gas engine, by the decompression stable-pressure device, safe gas stopping device, mechanical adjustable speed drive constitutes, it is characterized in that in the described decompression stable-pressure device, fuel gas inlet (17) is arranged on the valve body (19), and extension is conducted with blast tube (16a) in valve body (19), described blast tube (16a) other port is provided with rocker lever (6); the other end of rocker lever (6) is provided with push rod (20); the base portion of described push rod (20) is arranged on down on the diaphragm (8); be provided with down diaphragm spring (7) below the following diaphragm (8), and the cavity between described diaphragm (8) upside down and the valve body (19) constitutes lower membrane chamber (18); In the described safe gas stopping device, the blast tube (16b) that is conducted with lower membrane chamber (18) extends upward with membrane rod slide (2) and is conducted, be provided with film bar (21) in the described membrane rod slide (2), its base portion is arranged on the upper diaphragm (3), be provided with upper diaphragm spring (4) below the upper diaphragm (3), upper diaphragm spring (4) is arranged on the upper diaphragm spring pedestal (5), cavity between the downside of described upper diaphragm (3) and the valve body (19) constitutes upper diaphragm chamber (22), the vacuum passage (13) that is conducted with upper diaphragm chamber (22) is connected to cylinder (23), offers the through hole (14) that is conducted with atmosphere on the cavity wall between the upside of described upper diaphragm (3) and the valve body (19); In the described mechanical adjustable speed drive, blast tube (16c) upper end-hole that is conducted with membrane rod slide (2) is provided with unidirectional hole (15), it on it trunnion (1), one side of described trunnion (1) is provided with chock plate (12), opposite side is provided with closure (11), and described closure (11) also is connected to cylinder (23).
2. the gas mixing valve that is used for gas engine according to claim 1 is characterized in that described blast tube (16a) another port is opened in the lower membrane chamber (18), and the end of its lower shake-changing arm lever (6) is provided with sealing block (24); The base portion of the following diaphragm spring (7) below the described diaphragm (8) down is provided with adjusts bolt (9) and locking nut (10).
3. the gas mixing valve that is used for gas engine according to claim 1 it is characterized in that described film bar (21) and membrane rod slide (2) are slippery, and the upper end of film bar (21) also is provided with sealing block (24).
4. according to claim 1 or the 2 or 3 described gas mixing valves that are used for gas engine, the upper end that it is characterized in that described film bar (21) is a little more than the upper end open of the blast tube (16b) that is conducted with lower membrane chamber (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100257572A CN1715633A (en) | 2004-06-29 | 2004-06-29 | Gas mixing valve for gas burning engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100257572A CN1715633A (en) | 2004-06-29 | 2004-06-29 | Gas mixing valve for gas burning engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1715633A true CN1715633A (en) | 2006-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100257572A Pending CN1715633A (en) | 2004-06-29 | 2004-06-29 | Gas mixing valve for gas burning engine |
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| Country | Link |
|---|---|
| CN (1) | CN1715633A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278236A (en) * | 2011-05-31 | 2011-12-14 | 周洪潮 | Universal fuel gas mixing valve suitable for gas supply by different gas sources |
| CN102808692A (en) * | 2012-08-20 | 2012-12-05 | 长沙众强科技开发有限公司 | Liquefied gas generating set |
-
2004
- 2004-06-29 CN CNA2004100257572A patent/CN1715633A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278236A (en) * | 2011-05-31 | 2011-12-14 | 周洪潮 | Universal fuel gas mixing valve suitable for gas supply by different gas sources |
| CN102808692A (en) * | 2012-08-20 | 2012-12-05 | 长沙众强科技开发有限公司 | Liquefied gas generating set |
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