CN201280983Y - Fuel conveying device for small-sized gas engine - Google Patents
Fuel conveying device for small-sized gas engine Download PDFInfo
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- CN201280983Y CN201280983Y CNU2008202132895U CN200820213289U CN201280983Y CN 201280983 Y CN201280983 Y CN 201280983Y CN U2008202132895 U CNU2008202132895 U CN U2008202132895U CN 200820213289 U CN200820213289 U CN 200820213289U CN 201280983 Y CN201280983 Y CN 201280983Y
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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 relates to a fuel gas conveying device for a small-sized gas engine, comprising a fuel gas pressure-stabilizing mechanism, a fuel gas on-off control and safety mechanism, a gas mixing and gas intaking control mechanism and a fuel gas mass regulating mechanism; the fuel gas pressure-stabilizing mechanism and the fuel gas on-off control and safety mechanism commonly use one valve seat body and are arranged at the two sides of the valve seat body respectively; the gas mixing and gas intaking control mechanism is arranged above the valve seat body, and the fuel gas mass regulating mechanism is arranged between the valve seat body and the gas mixing and gas intaking control mechanism; the fuel gas enters into the gas mixing and gas intaking control mechanism from the fuel gas pressure-stabilizing mechanism after passing through the fuel gas on-off control and safety mechanism by virtue of the fuel gas mass regulating mechanism for being output with the air in the gas mixing and gas intaking control mechanism. The device has simple structure, convenient installation and maintenance, low cost and low fuel gas consumption rate, and is safe and reliable; therefore, the device can be suitable for various fuel gas types and pressure range, thus ensuring to have suitable air-fuel delivery ratio and low fuel gas consumption rate when using different fuel gas types.
Description
[technical field]
The utility model relates to the device of supply engine with on-liquid fuel, particularly supplies with the fuel delivery means of small gas motor with inflammable gass such as rock gas, liquefied petroleum gas (LPG) or biogas.
[background technique]
Most of gasoline and the diesel oil of adopting of prior art internal-combustion engine acts as a fuel.The motor that adopts inflammable gass such as rock gas, liquefied petroleum gas (LPG), biogas to act as a fuel is mainly used on the gas engine more than tens kilowatts.
Because technology is immature, the engine application that adopts inflammable gass such as rock gas, liquefied petroleum gas (LPG) or biogas to act as a fuel is not very general on the small gas motor.Its reason is: for the small gas motor, safe and practical, easy and simple to handle, with low cost is main requirement.Because the small gas motor is subjected to the restriction of structure, can't adopt the complexity that adopts on the big-and-middle-sized gas engine and expensive accurate control apparatus, so prior art small gas motor adopts fuel gas mixer to solve the supply of fuel of gas engine mostly.The key issue of its solution is that the mixed gas that guarantees suitable air fuel ratio safely, reliably enters motor, guarantees the normal operation of motor under different operating modes.But prior art small gas engine structure complexity, safeguard inconvenience and cost height, and difficult application that adapts to the different multiple gas of lower calorific value of valve, be difficult to adapt to air fuel ratio requirement suitable under the different operating situation, and high gas consumption rate is arranged.
[model utility content]
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of fuel delivery means that is used for the small gas motor is provided, this apparatus structure is simple, installation and easy to maintenance, cost is low, the gas consumption rate is low and safety, reliable, can adapt to different combustion gas kind and pressure range, having guaranteed all has suitable air fuel ratio and low gas consumption rate at different combustion gas kind time-likes.
The technological scheme that the utility model solve the technical problem employing is:
A kind of fuel delivery means that is used for the small gas motor is provided, comprises metastable gas press mechanism, the control of combustion gas break-make and safeguarding mechanism, gas mixing and inlet control mechanism and gas quantity controlling mechanism; Described metastable gas press mechanism and combustion gas break-make are controlled and the shared valve body of safeguarding mechanism, are separately positioned on the both sides of this valve body; Described gas mixing and inlet control mechanism are arranged on the top of described valve body; Described gas quantity controlling mechanism be arranged on that described valve body mixes with gas and inlet control mechanism between; Combustion gas enters through behind described combustion gas break-make control and the safeguarding mechanism from described metastable gas press mechanism, enter in described gas mixing and the inlet control mechanism by described gas quantity controlling mechanism, mix again with from the fresh air that described gas mixes and inlet control mechanism enters, export motor to from described gas mixing and inlet control mechanism behind the formation mixed gas.
Compare with prior art, the beneficial effect that the utility model is used for the fuel delivery means of small gas motor is:
Metastable gas press mechanism and control of combustion gas break-make and the shared valve body of safeguarding mechanism, simple in structure, installation and easy to maintenance and with low cost; Fuel delivery means of the present utility model can adapt to the combustion gas of variety classes, different pressures, by described metastable gas press mechanism, the control of combustion gas break-make and safeguarding mechanism, gas mixing and inlet control mechanism and gas quantity controlling mechanism, guarantee in time to motor supply combustion gas or termination air feed.Can also reach air by gas mixing and inlet control mechanism and gas quantity controlling mechanism mixes according to suitable air fuel ratio with combustion gas, to guarantee that motor is when the different working conditions, obtain suitable gas supply, thereby reach the purpose that reduces the gas consumption rate.
[description of drawings]
Fig. 1 is the main TV structure cross-sectional schematic of the utility model fuel delivery means of being used for the small gas motor;
Fig. 2 is the cross-sectional schematic along A-A among Fig. 1, and the open and-shut mode of assisted gas gas-entered passageway 215 comprises Fig. 2 a, Fig. 2 b and Fig. 2 c when having represented closure 230 different opening;
Fig. 3 is the principle schematic of the gas quantity adjusting part of described fuel delivery means, comprises Fig. 3 a and Fig. 3 b.
[embodiment]
Below in conjunction with each accompanying drawing the utility model is described in further detail.
Referring to Fig. 1, a kind of fuel delivery means that is used for the small gas motor comprises that metastable gas press mechanism 110, the control of combustion gas break-make and safeguarding mechanism 120, gas mix and inlet control mechanism 200 and gas quantity controlling mechanism 300; Described metastable gas press mechanism 110 and combustion gas break-make are controlled and safeguarding mechanism 120 shared valve bodies 100, are separately positioned on the both sides of this valve body 100; Described gas mixes and inlet control mechanism 200 is arranged on the top of described valve body 100, and available a plurality of bolt 410 is fixedly connected; Described gas quantity controlling mechanism 300 be arranged on that described valve body 100 mixes with gas and inlet control mechanism 200 between; Combustion gas enters through behind described combustion gas break-make control and the safeguarding mechanism 120 from described metastable gas press mechanism 110, enter in described gas mixing and the inlet control mechanism 200 by described gas quantity controlling mechanism 300, mix again with from the fresh air that described gas mixes and inlet control mechanism 200 enters, export motor to from described gas mixing and inlet control mechanism 200 behind the formation mixed gas.
Referring to Fig. 1, described metastable gas press mechanism 110 comprises right valve gap 111, the right diaphragm 112 of rubber-like, the pedestal 113 that is provided with through hole 1131, the spring seat 114 that is provided with right pressure spring 115 and suction valve 118, and being arranged on the described valve body 100 gas-entered passageway 101 that enters for described combustion gas, described combustion gas outlet passageway 102 and right ports 103 from described metastable gas press mechanism 110 outputs, described right ports 103 is connected with described gas-entered passageway 101 and outlet passageway 102; Described right valve gap 111 is arranged on described valve body 100 right sides; Described right diaphragm 112 peripheries are pressed between described right valve gap 111 and the described valve body 100; Described spring seat 114 is arranged on the described right valve gap 111, and described right pressure spring 115 1 ends on it withstand described spring seat 114 inner chamber end walls 1142, and the other end withstands the right side of described right diaphragm 112; The left side of the hole wall of described valve body right ports 103 and described right diaphragm 112 surrounds a pressure stabilizing cavity 119; The right side of described right diaphragm 112, right valve gap 111 and spring seat 114 surround one together and regulate chamber 117; Described pedestal 113 is fixed on the side of described right diaphragm 112 near described pressure stabilizing cavity 119, and its right-hand member withstands the left side of described right diaphragm 112; The upper end of described suction valve 118 is movably connected in the through hole 1131 of described pedestal 113, and the outlet of the lower end of described suction valve 118 and described gas-entered passageway 101 is suitable.
Referring to Fig. 1, the control that the switching of described gas-entered passageway 101 outlets and aperture size are subjected to described suction valve 118, described suction valve 118 is then controlled by the position of gaseous-pressure and described right diaphragm 112, thereby control flow and pressure that described combustion gas enters described pressure stabilizing cavity 119, realize the purpose of voltage stabilizing.
Referring to Fig. 1, described spring seat 114 is provided with through hole 1141, and this through hole 1141 communicates with atmosphere, keeping the air pressure in the described adjusting chamber 117 constant, and guarantees that the air pressure of regulating in the chamber 117 are atmospheric pressure.
Referring to Fig. 1, described suction valve 118 is lever constructions, described lever construction lower end is provided with rubber valve pad 1182, this rubber valve pad 1182 is suitable with the outlet of described gas-entered passageway 101, described lever construction middle part is provided with a fulcrum 1181, and described lever construction upper end is inserted in the through hole 1131 of described pedestal 113 versatilely and controlled by the position of described right diaphragm 112; When described right diaphragm 112 is moved by the external force effect, drive described lever construction and rotate around described fulcrum 1181, thus the switching of described gas-entered passageway 101 outlets that realization cooperates with described suction valve 118 lower end rubber valve pads 1182 and the variation of aperture size.
Referring to Fig. 1, be provided with transition plate 1151 between the right side of described right pressure spring 115 and described right diaphragm 112, the right side that described right pressure spring 115 withstands described right diaphragm 112 by this transition plate 1151.The area of transition plate 1151 is bigger than the area of right pressure spring 115 end faces, increases the area of contact on the right pressure spring 115 and described right diaphragm 112 right sides.
Referring to Fig. 1, also be provided with transition plate 1132 between the left side of same described pedestal 113 and described right diaphragm 112, the left side that described pedestal 113 withstands described right diaphragm 112 by this transition plate 1132.Transition plate 1132 areas are bigger than the area of described pedestal 113 right sides, increase the area of contact on the described pedestal 113 and described right diaphragm 112 left sides.
Referring to Fig. 1, described spring seat 114 adopts with described right valve gap 111 and is threaded, and can adopt locking nut 116 lockings, and the pretightening force of described right pressure spring 115 can be adjusted by rotating described spring seat 114.When needs are adjusted the pretightening force of right pressure spring 115, unclamp locking nut 116, with described spring seat 114 inside precessions, so that increase the pretightening force of right pressure spring 115, or described spring seat 114 outwards screwed out, just so that reduce the pretightening force of right pressure spring 115.
The working principle of described metastable gas press mechanism 110:
Referring to Fig. 1, combustion gas enters from gas-entered passageway 101 by the diagram arrow B, if the suction pressure of combustion gas surpasses specified value, then the rubber valve pad 1182 of suction valve 118 lower ends is pushed in combustion gas open, and enter into pressure stabilizing cavity 25, and enter into outlet passageway 102 by pressure stabilizing cavity 25, in outlet passageway 102 enters into control of combustion gas break-make and safeguarding mechanism 120.Communicate with atmosphere owing to described adjusting chamber 117 simultaneously, its pressure is the pressure of air, the elastic force of this pressure and right pressure spring 115 acts on the right diaphragm 112, right diaphragm 112 is moved to the left and promotes pedestal 113, and the suction valve 118 that drives described lever construction rotates around described fulcrum 1181, thereby the switching of described gas-entered passageway 101 outlets that realization cooperates with described suction valve 118 lower end rubber valve pads 1182 and the variation of aperture size, thereby control flow and pressure that described combustion gas enters described pressure stabilizing cavity 119, realize the purpose of voltage stabilizing in the pressure stabilizing cavity 119.The active force of right pressure spring 115 and combustion gas balance each other in the thrust that right diaphragm 112 opposite sides produce.The pretightening force of right pressure spring 115 can be adjusted by rotating missile spring abutment 114, and this pretightening force has been determined an accent specified value of the suction pressure of combustion gas.The size of outlet passageway 102 outlets is controlled by described combustion gas break-make control and safeguarding mechanism 120.
Referring to Fig. 1, described combustion gas break-make control and safeguarding mechanism 120 comprise that the left valve gap 125, rubber-like left side diaphragm 124 and the right-hand member that are provided with left pressure spring 127 are provided with the guiding valve 121 of valve pad 1211, and are arranged on blast tube 104, left hole 105 and the skidway hole 106 that is connected from described metastable gas press mechanism 110 delivery outlets with combustion gas on the described valve body 100; Described left valve gap 125 is arranged on described valve body 100 left sides; Be pressed between described left valve gap 125 and the described valve body 100 around the described left diaphragm 124; Left pressure spring 127 1 ends on the described left valve gap 125 withstand cavity wall 1252 in the described left valve gap 125, and the other end withstands the left side of described left diaphragm 124; Described skidway hole 106 is positioned at described valve body 100 left side central portion, and described skidway hole 106 right-hand members leave than the big hole 1061 of described guiding valve 121 diameters, is used for blast tube 104 is communicated with the outlet of exporting combustion gas from described metastable gas press mechanism 110; Described guiding valve 121 is installed movingly with described skidway hole 106, and do about can be in described skidway hole 106 straight line motion and by described metastable gas press mechanism 110 delivery outlets of valve pad 1211 controls of right-hand member opening or closed, the right side that described guiding valve 121 left ends withstand described left diaphragm 124; The hole wall of described valve body 100 left hole 105 surrounds a common pressure chamber 123 with the right side of described left diaphragm 124; The left side of described left diaphragm 124 and left valve gap 125 surround a vacuum chamber 126 together; Have on the described left valve gap 125 and mix with described vacuum chamber 126 and gas and through hole 1251 that the mixed gas outlet of inlet control mechanism 200 is connected, so that the cylinder vacuum transmission during described engine operation is in described vacuum chamber 126; Also have the through hole 107 that is connected with described common pressure chamber 123 and atmosphere on the described valve body 100, keep atmospheric pressure so that make in the described common pressure chamber 123.
Referring to Fig. 1, also be provided with transition plate 1271 between the left side of described left pressure spring 127 and described left diaphragm 124, the left side that described left pressure spring 127 withstands described left diaphragm 124 by this transition plate 12711.The area of transition plate 1271 is bigger than the area of left pressure spring 127 end faces, increases the area of contact on the left side of left pressure spring 127 and described left diaphragm 124.
The working principle of described combustion gas break-make control and safeguarding mechanism 120:
Referring to Fig. 1; be installed in the left pressure spring 127 in left valve gap 125 inner chambers; its installation pretightening force guaranteed when engine shutdown (this moment vacuum chamber 126 in no vacuum) thus promotion guiding valve 121 move right close all the time combustion gas from described metastable gas press mechanism 110 enter into that the combustion gas break-make is controlled and safeguarding mechanism 120 in outlet passageway 102; guarantee that combustion gas can't enter in described combustion gas break-make control and the safeguarding mechanism 120 from described metastable gas press mechanism 110 under the outage state; also just can't enter in described gas mixing and the inlet control mechanism 200; cause to enter motor, thereby guarantee the safety of motor.Because vacuum chamber 126 mixes with described gas and the mixed gas outlet of inlet control mechanism 200 is connected, and has the through hole 107 that communicates with atmosphere on the described common pressure chamber 123, make all the time to keep atmospheric pressure in the common pressure chamber 123.Aspirating stroke when engine operation, cause the mixed gas outlet place of described gas mixing and inlet control mechanism 200 to have degree of vacuum by engine charge, make vacuum chamber 126 also be in the certain vacuum degree, cause left diaphragm 124 two ends to produce pressure difference, impel left diaphragm 124 to drive guiding valve 121 to left movement, the path 10 2 of giving vent to anger is opened, combustion gas just enters into blast tube 104 in control of described combustion gas break-make and the safeguarding mechanism 120 by outlet passageway 102 from described metastable gas press mechanism 110, enter in described gas mixing and the inlet control mechanism 200 by described gas quantity controlling mechanism 300 by blast tube 104 again, mix again with from described gas mixes and inlet control mechanism 200 enters fresh air, form behind the mixed gas from described gas and mix and inlet control mechanism 200 exports the cylinder of motor to.And when other stroke of motor, because the IC Intake Valve Closes of motor, degree of vacuum in the vacuum chamber 126 disappears, the gas pressure of diaphragm 124 both sides, a left side tends to balance once more, guiding valve 121 cuts out outlet passageway 102 again under the elastic force effect of left pressure spring 127, combustion gas can't be entered in the blast tube 104 of described combustion gas break-make control and safeguarding mechanism 120 from described metastable gas press mechanism 110, cause to enter motor, thereby guarantee the safety of motor.
Referring to Fig. 1, described gas mixes and inlet control mechanism 200 comprises housing 210, trunnion 250, chock plate 260 and rotating shaft 270; Described housing 210 is provided with mixed gas outlet passage 211 and the air inlet passageway 212 that is interconnected, and the through hole 214 that is provided with through hole 213 and is connected with described gas quantity controlling mechanism 300 delivery outlets, described through hole 213 is connected the vacuum chamber of described mixed gas outlet passage 211 with described combustion gas break-make control and safeguarding mechanism 120; Described trunnion 250 is installed in the middle part of described housing 210, has combustion gas air inlet main passage 251 on the described trunnion 250, and described combustion gas air inlet main passage 251 is connected with through hole 214 on the described housing 210; Described chock plate 260 is arranged on the inlet of the air inlet passageway 212 of described housing 210 right-hand members by described rotating shaft 270, and can rotate on described housing 210, and described chock plate 260 is used for regulating the inlet of air when starting.
Referring to Fig. 1, described gas mixes and inlet control mechanism 200 also comprises rotating shaft 220, closure 230 and valve block 240; Described closure 230 is arranged on mixed gas outlet passage 211 places of described housing 210 left ends by described rotating shaft 220, and can rotate on described housing 210; Described housing 210 is having assisted gas gas-entered passageway 215 near described closure 230 places, and this assisted gas gas-entered passageway 215 is connected by the delivery outlet of described gas quantity controlling mechanism 300 with described combustion gas break-make control and safeguarding mechanism 120; Described valve block 240 is installed in described rotating shaft 220 lower ends, and can rotate with described rotating shaft 220, described valve block 240 is close to the lower plane of described mixed gas outlet passage 211, can cover the outlet of described assisted gas gas-entered passageway 215, described valve block 240 is used to regulate the inlet of combustion gas from described assisted gas gas-entered passageway 215.
Referring to Fig. 1, described valve block 240 has sector notch 241, when described valve block 240 rotated with described rotating shaft 220, this sector notch 241 can be adjusted the size of described assisted gas gas-entered passageway 215 outlets, thereby can regulate the inlet of combustion gas from described assisted gas gas-entered passageway 215;
Referring to Fig. 1, when described motor was in idling or little load, described assisted gas gas-entered passageway 215 was closed by described valve block 240, and described motor only depends on the combustion gas air inlet main passage 251 on the described trunnion 250 to supply with combustion gas; When engine load strengthens, described closure 230 is opened greatly gradually, open the size of described assisted gas gas-entered passageway 215 outlets gradually with the valve block 240 of described closure 230 interlocks, make described motor obtain extra gas supply from described assisted gas gas-entered passageway 215.
Referring to Fig. 1, the diameter of described combustion gas air inlet main passage 251 and described assisted gas gas-entered passageway 215 is littler than the diameter of described blast tube 104.
Referring to Fig. 1, the left valve gap 125 of control of described combustion gas break-make and safeguarding mechanism 120 and gas mix and inlet control mechanism between be provided with flexible pipe 440, be used for the through hole 1251 on the described left valve gap 125 is communicated with through hole 213 on gas mixing and the inlet control mechanism 200.
The working principle of described gas mixing and inlet control mechanism 200:
Referring to Fig. 1, aspirating stroke at motor, air enters from air inlet passageway 212 by the diagram arrow C, when entering through trunnion 250 by air inlet passageway 212, because Venturi effect increases at trunnion 250 place's flow velocitys, pressure reduces, thereby the combustion gas that makes the combustion gas air inlet main passage 251 of trunnion 250 come out is quickened to be taken out of and is formed mixed gas with air mixing, enters in the cylinder of motor after regulating through the air inflow of closure 230 again.
Consider the gas quantity difference that engine load is not required simultaneously, the combustion gas air inflow needs to strengthen when big load.So having assisted gas gas-entered passageway 215 at described housing 210 near described closure 230 places, the switching of this assisted gas gas-entered passageway 215 is controlled by the valve block 240 of rotating shaft 220 lower ends that are fixed on closure 230.Fig. 2 is the open and-shut mode of assisted gas gas-entered passageway 215 when having represented the different aperture of closure 230, comprises Fig. 2 a, Fig. 2 b and Fig. 2 c.Shown in Fig. 2 a, when motor was in idling or little load, assisted gas gas-entered passageway 215 was closed fully by valve block 240, and the cylinder of motor only depends on combustion gas air inlet main passage 251 to supply with combustion gas; Shown in Fig. 2 b, when motor was in moderate duty, assisted gas gas-entered passageway 215 was opened on a small quantity by valve block 240, and the cylinder of motor is except being supplied with the combustion gas by combustion gas air inlet main passage 251, also by the 215 a small amount of supply combustion gas of assisted gas gas-entered passageway; Shown in Fig. 2 c, when motor is in big load, mean that closure 230 need open when big gradually, open assisted gas gas-entered passageway 215 fully with the valve block 240 of closure 230 interlocks, the cylinder of motor is except being supplied with the combustion gas by combustion gas air inlet main passage 251, also supply with combustion gas, make the cylinder of motor obtain extra gas supply by assisted gas gas-entered passageway 215.Because the diameter of described combustion gas air inlet main passage 251 and described assisted gas gas-entered passageway 215 is littler than the diameter of described blast tube 104, so, said structure can so that motor when different working conditions, adopt the inlet hole air inlet of different fuel main jet diameters, obtain different gas supply amounts, thereby accurately adjust required air fuel ratio, reduced the consumption rate of combustion gas.
Referring to Fig. 1, described gas quantity controlling mechanism 300 comprises adjustable metering-orifice seat 310, described valve body 100 mix with gas and inlet control mechanism 200 housings on have and the adaptive dimple hole of adjustable metering-orifice seat 310 outside dimensions, described adjustable metering-orifice seat 310 be arranged on by these two dimple holes that described valve body 100 mixes with gas and inlet control mechanism 200 between; Described adjustable metering-orifice seat 310 has blast tube hole 311, and this blast tube hole 311 is with described combustion gas break-make control and safeguarding mechanism 120 and described gas mixes and inlet control mechanism 200 interior blast tubes are connected, and plays the effect of the blast tube of forming a connecting link.
Referring to Fig. 1, described adjustable metering-orifice seat 310 is cylindrical, described adjustable metering-orifice seat 310 can described valve body 100 mix with gas and inlet control mechanism 200 housings on the dimple hole in rotate; The cylinder center of circle off-centre of the center of circle in described blast tube hole 311 and described adjustable metering-orifice seat 310, when described adjustable metering-orifice seat 310 rotates, the area that described adjustable metering-orifice seat 310, the control of described combustion gas break-make and safeguarding mechanism 120 mix with described gas and inlet control mechanism 200 interior blast tubes are connected is different, so that adapt to motor in the suitable air fuel ratio of different combustion gas kind time-likes.
Referring to Fig. 1, described adjustable metering-orifice seat 310 also has described combustion gas break-make control and safeguarding mechanism 120 via 312,313 that interior blast tubes mix with described gas and inlet control mechanism 200 interior assisted gas passages are connected, wherein said two vias 312,313 interconnect, described via 312 is controlled with described combustion gas break-make and safeguarding mechanism 120 interior blast tubes are connected, and described via 313 mixes with described gas and inlet control mechanism 200 interior assisted gas passages are connected.
Referring to Fig. 1, be provided with seal ring 430 between described adjustable metering-orifice seat 310 and the described valve body 100, described seal ring 430 has the through hole that the blast tube hole 311 with blast tube in control of described combustion gas break-make and the safeguarding mechanism 120 and described adjustable metering-orifice seat 310 is connected.
Referring to Fig. 1, described adjustable metering-orifice seat 310 mix with described gas and inlet control mechanism 200 housings between also be provided with seal ring 420, described seal ring 420 have described gas mixed and inlet control mechanism 200 in blast tube and the through hole that is connected of the blast tube hole 311 of described adjustable metering-orifice seat 310; Described seal ring 420 also have described gas mixed and inlet control mechanism 200 in assisted gas passage and the through hole that is connected of the via 313 of described adjustable metering-orifice seat 310.
The working principle of described gas quantity controlling mechanism 300:
Because the center of circle in described blast tube hole 311 and the cylinder center of circle off-centre of described adjustable metering-orifice seat 310, when described adjustable metering-orifice seat 310 rotates, blast tube hole 311 in the described adjustable metering-orifice seat 310, blast tube 104 in described combustion gas break-make control and the safeguarding mechanism 120, each center of circle of combustion gas air inlet main passage 251 in the through hole 214 in the housing 210 of described gas mixing and inlet control mechanism 200 and the trunnion 250 of mixing of described gas and inlet control mechanism 200 can produce with one heart or the position that is offset relation, this just different position relation, blast tube hole 311, blast tube 104, through hole 214 is different with the area that combustion gas air inlet main passage 251 is connected, promptly can there be the different areas that passes through in the main blast tube that is made of them, thereby can realize combustion gas for different calorific values, only need rotate adjustable metering-orifice seat 310, can realize desired different gas quantity, so that adapt to motor in the suitable air fuel ratio of different combustion gas kind time-likes.
Fig. 3 is the principle schematic of the gas quantity controlling mechanism 300 of described fuel delivery means, comprises Fig. 3 a and Fig. 3 b; Wherein Fig. 3 a is blast tube holes 311 in the described adjustable metering-orifice seat 310 position relations during with blast tube 104, through hole 214 and 251 skews of combustion gas air inlet main passage, this moment by they constitute the area of main blast tube less; Wherein Fig. 3 b is that blast tube hole 311 and blast tube 104, through hole 214 in the described adjustable metering-orifice seat 310 and combustion gas air inlet main passage 251 position when concentric concerns, at this moment the area maximum of the main blast tube that is made of them.
The fuel delivery means that the utility model is used for the small gas motor is applicable to the motor of inflammable gass such as adopting rock gas, liquefied petroleum gas (LPG), biogas, is used to drive engineering machinery such as generator, water pump, mowing machine.Described fuel delivery means can adapt to the combustion gas of variety classes, different pressures, guarantees in time to motor supply combustion gas or termination air feed by described metastable gas press mechanism, the control of combustion gas break-make and safeguarding mechanism, gas mixing and inlet control mechanism and gas quantity controlling mechanism.Can also reach air by gas mixing and inlet control mechanism and gas quantity controlling mechanism mixes according to suitable air fuel ratio with combustion gas, to guarantee that motor is when the different working conditions, obtain suitable gas supply, thereby reach the purpose that reduces the gas consumption rate.
The above embodiment has only expressed preferred implementation 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 claim; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model; Therefore, all equivalents and modifications of being done with the utility model claim scope all should belong to the covering scope of the utility model claim.
Claims (13)
1. a fuel delivery means that is used for the small gas motor comprises that metastable gas press mechanism (110), the control of combustion gas break-make and safeguarding mechanism (120), gas mix and inlet control mechanism (200) and gas quantity controlling mechanism (300); It is characterized in that:
Described metastable gas press mechanism (110) and combustion gas break-make are controlled and the shared valve body of safeguarding mechanism (120) (100), are separately positioned on the both sides of this valve body (100); Described gas mixing and inlet control mechanism (200) are arranged on the top of described valve body (100); Described gas quantity controlling mechanism (300) be arranged on that described valve body (100) mixes with gas and inlet control mechanism (200) between; Combustion gas enters through behind described combustion gas break-make control and the safeguarding mechanism (120) from described metastable gas press mechanism (110), enter in described gas mixing and the inlet control mechanism (200) by described gas quantity controlling mechanism (300), mix with the fresh air that mixes from described gas and inlet control mechanism (200) enters again, export motor to from described gas mixing and inlet control mechanism (200) behind the formation mixed gas.
2. the fuel delivery means that is used for the small gas motor according to claim 1 is characterized in that:
Described metastable gas press mechanism (110) comprises right valve gap (111), the right diaphragm (112) of rubber-like, the pedestal (113) that is provided with through hole (1131), the spring seat (114) that is provided with right pressure spring (115) and suction valve (118), and be arranged on described valve body (100) and go up the gas-entered passageway (101) that enters for described combustion gas, described combustion gas outlet passageway (102) and the right ports (103) from described metastable gas press mechanism (110) output, described right ports (103) is connected with described gas-entered passageway (101) and outlet passageway (102); Described right valve gap (111) is arranged on described valve body (100) right side; Described right diaphragm (112) periphery is pressed between described right valve gap (111) and the described valve body (100); Described spring seat (114) is arranged on the described right valve gap (111) by screw thread, and described right pressure spring (115) one ends on it withstand described spring seat (114) inner chamber end wall (1142), and the other end withstands the right side of described right diaphragm (112); The left side of the hole wall of described valve body right ports (103) and described right diaphragm (112) surrounds a pressure stabilizing cavity (119); The right side of described right diaphragm (112), right valve gap (111) and spring seat (114) surround one together and regulate chamber (117); Described pedestal (113) is fixed on the side of described right diaphragm (112) near described pressure stabilizing cavity (119), and its right-hand member withstands the left side of described right diaphragm (112); The upper end of described suction valve (118) is movably connected in the through hole (1131) of described pedestal (113), and the outlet of the lower end of described suction valve (118) and described gas-entered passageway (101) is suitable;
The switching and the aperture size of described gas-entered passageway (101) outlet are subjected to the control of described suction valve (118), described suction valve (118) is then controlled by the position of gaseous-pressure and described right diaphragm (112), thereby control flow and pressure that described combustion gas enters described pressure stabilizing cavity (119), realize the purpose of voltage stabilizing.
3. the fuel delivery means that is used for the small gas motor according to claim 2 is characterized in that:
Described spring seat (114) is provided with through hole (1141), and this through hole (1141) communicates with atmosphere, is atmospheric pressure to keep the interior air pressure in described adjusting chamber (117) constant.
4. the fuel delivery means that is used for the small gas motor according to claim 2 is characterized in that:
Described suction valve (118) is a lever construction, described lever construction lower end is provided with rubber valve pad (1182), this rubber valve pad (1182) is suitable with the outlet of described gas-entered passageway (101), described lever construction middle part is provided with a fulcrum (1181), and described lever construction upper end is inserted in the through hole (1131) of described pedestal (113) versatilely and controlled by the position of described right diaphragm (112); When described right diaphragm (112) is moved by the external force effect, drive described lever construction and rotate around described fulcrum (1181), thus the switching of the described gas-entered passageway (101) that realization cooperates with described suction valve (118) lower end rubber valve pad (1182) outlet and the variation of aperture size.
5. the fuel delivery means that is used for the small gas motor according to claim 1 is characterized in that:
Described combustion gas break-make control and safeguarding mechanism (120) comprise that the left valve gap (125), rubber-like left side diaphragm (124) and the right-hand member that are provided with left pressure spring (127) are provided with the guiding valve (121) of valve pad (1211), and are arranged on last blast tube (104), left hole (105) and the skidway hole (106) that is connected from described metastable gas press mechanism (110) delivery outlet with combustion gas of described valve body (100); Described left valve gap (125) is arranged on described valve body (100) left side; Described left diaphragm (124) periphery is pressed between described left valve gap (125) and the described valve body (100); Left pressure spring (127) one ends on the described left valve gap (125) withstand the interior cavity wall of described left valve gap (125) (1252), and the other end withstands the left side of described left diaphragm (124); Described skidway hole (106) is positioned at described valve body (100) left side central portion, described skidway hole (106) right-hand member leaves the hole (1061) bigger than described guiding valve (121) diameter, is used for blast tube (104) is communicated with the outlet of exporting combustion gas from described metastable gas press mechanism (110); Described guiding valve (121) is installed movingly with described skidway hole (106), and do about can be in described skidway hole (106) straight line motion and by valve pad (1211) control described metastable gas press mechanism (110) delivery outlet of right-hand member opening or closed, the right side that described guiding valve (121) left end withstands described left diaphragm (124); The hole wall of described valve body (100) left hole (105) surrounds a common pressure chamber (123) with the right side of described left diaphragm (124); The left side of described left diaphragm (124) and left valve gap (125) surround a vacuum chamber (126) together; Have on the described left valve gap (125) and mix with described vacuum chamber (126) and gas and through hole (1251) that the mixed gas outlet of inlet control mechanism (200) is connected, so that the cylinder vacuum transmission during described engine operation is in described vacuum chamber (126); Also have the through hole (107) that is connected with described common pressure chamber (123) and atmosphere on the described valve body (100), keep atmospheric pressure in the described common pressure chamber (123) so that make.
6. the fuel delivery means that is used for the small gas motor according to claim 1 is characterized in that:
Described gas mixes and inlet control mechanism (200) comprises housing (210), trunnion (250), chock plate (260) and rotating shaft (270); Described housing (210) is provided with mixed gas outlet passage (211) and the air inlet passageway (212) that is interconnected, and the through hole (214) that is provided with through hole (213) and is connected with described gas quantity controlling mechanism (300) delivery outlet, described through hole (213) is connected the vacuum chamber of described mixed gas outlet passage (211) with described combustion gas break-make control and safeguarding mechanism (120); Described trunnion (250) is installed in the middle part of described housing (210), has combustion gas air inlet main passage (251) on the described trunnion (250), and described combustion gas air inlet main passage (251) is connected with through hole (214) on the described housing (210); Described chock plate (260) is arranged on the inlet of the air inlet passageway (212) of described housing (210) right-hand member by described rotating shaft (270), and can go up at described housing (210) and rotate, described chock plate (260) is used for regulating the inlet of air when starting.
7. the fuel delivery means that is used for the small gas motor according to claim 6 is characterized in that:
Described gas mixes and inlet control mechanism (200) also comprises rotating shaft (220), closure (230) and valve block (240); Described closure (230) is located by the mixed gas outlet passage (211) that described rotating shaft (220) is arranged on described housing (210) left end, and can go up at described housing (210) and rotate; Described housing (210) is locating to have assisted gas gas-entered passageway (215) near described closure (230), and this assisted gas gas-entered passageway (215) is connected by the delivery outlet of described gas quantity controlling mechanism (300) with described combustion gas break-make control and safeguarding mechanism (120); Described valve block (240) is installed in described rotating shaft (220) lower end, and can rotate with described rotating shaft (220), described valve block (240) is close to the lower plane of described mixed gas outlet passage (211), can cover the outlet of described assisted gas gas-entered passageway (215), described valve block (240) is used to regulate the inlet of combustion gas from described assisted gas gas-entered passageway (215).
8. the fuel delivery means that is used for the small gas motor according to claim 7 is characterized in that:
Described valve block (240) has sector notch (241), when described valve block (240) with described rotating shaft (220) when rotating, this sector notch (241)) size of described assisted gas gas-entered passageway (215) outlet can be adjusted, thereby the inlet of combustion gas can be regulated from described assisted gas gas-entered passageway (215);
When described motor was in idling or little load, described assisted gas gas-entered passageway (215) was closed by described valve block (240), and described motor only depends on the combustion gas air inlet main passage (251) on the described trunnion (250) to supply with combustion gas; When engine load strengthens, described closure (230) is opened greatly gradually, open the size of described assisted gas gas-entered passageway (215) outlet gradually with the valve block (240) of described closure (230) interlock, make described motor obtain extra gas supply from described assisted gas gas-entered passageway (215).
9. according to each described fuel delivery means that is used for the small gas motor of claim 5～8, it is characterized in that:
The diameter of described combustion gas air inlet main passage (251) and described assisted gas gas-entered passageway (215) is littler than the diameter of described blast tube (104).
10. the fuel delivery means that is used for the small gas motor according to claim 1 is characterized in that:
Described gas quantity controlling mechanism (300) comprises adjustable metering-orifice seat (310), described valve body (100) mix with gas and inlet control mechanism (200) housing on have and the adaptive dimple hole of adjustable metering-orifice seat (310) outside dimensions, described adjustable metering-orifice seat (310) be arranged on by these two dimple holes that described valve body (100) mixes with gas and inlet control mechanism (200) between; Described adjustable metering-orifice seat (310) has blast tube hole (311), this blast tube hole (311) is connected the blast tube in described combustion gas break-make control and safeguarding mechanism (120) and mixing of described gas and the inlet control mechanism (200), plays the effect of the blast tube of forming a connecting link.
11. the fuel delivery means that is used for the small gas motor according to claim 10 is characterized in that:
Described adjustable metering-orifice seat (310) is cylindrical, described adjustable metering-orifice seat (310) can described valve body (100) mix with gas and inlet control mechanism (200) housing on the dimple hole in rotate; The cylinder center of circle off-centre of the center of circle in described blast tube hole (311) and described adjustable metering-orifice seat (310), when described adjustable metering-orifice seat (310) rotates, described adjustable metering-orifice seat (310), the control of described combustion gas break-make and safeguarding mechanism (120) are different with the area that the blast tube that described gas mixes and inlet control mechanism (200) is interior is connected, so that adapt to described motor in the suitable air fuel ratio of different combustion gas kind time-likes.
12. the fuel delivery means that is used for the small gas motor according to claim 11 is characterized in that:
Described adjustable metering-orifice seat (310) also has the via (312,313) that the blast tube in control of described combustion gas break-make and the safeguarding mechanism (120) is connected with described gas mixes and inlet control mechanism (200) is interior assisted gas passage, wherein said two vias (312,313) interconnect, described via (312) is connected with the blast tube that described combustion gas break-make is controlled and safeguarding mechanism (120) is interior, and described via (313) is connected with the assisted gas passage that described gas mixes and inlet control mechanism (200) is interior.
13. the fuel delivery means that is used for the small gas motor according to claim 12 is characterized in that:
Be provided with seal ring (430) between described adjustable metering-orifice seat (310) and the described valve body (100), described seal ring (430) has the through hole that the blast tube hole (311) with blast tube in control of described combustion gas break-make and the safeguarding mechanism (120) and described adjustable metering-orifice seat (310) is connected;
Described adjustable metering-orifice seat (310) mix with described gas and inlet control mechanism (200) housing between also be provided with seal ring (420), described seal ring (420) have described gas mixed and inlet control mechanism (200) in blast tube and the through hole that is connected of the blast tube hole (311) of described adjustable metering-orifice seat (310); Described seal ring (420) also have described gas mixed and inlet control mechanism (200) in assisted gas passage and the through hole that is connected of the via (313) of described adjustable metering-orifice seat (310).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202132895U CN201280983Y (en) | 2008-11-04 | 2008-11-04 | Fuel conveying device for small-sized gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202132895U CN201280983Y (en) | 2008-11-04 | 2008-11-04 | Fuel conveying device for small-sized gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201280983Y true CN201280983Y (en) | 2009-07-29 |
Family
ID=40927857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202132895U Expired - Fee Related CN201280983Y (en) | 2008-11-04 | 2008-11-04 | Fuel conveying device for small-sized gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201280983Y (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 |
| CN112128985A (en) * | 2019-06-25 | 2020-12-25 | 芜湖美的厨卫电器制造有限公司 | Gas water heater's gas adjusting device and gas water heater that has it |
-
2008
- 2008-11-04 CN CNU2008202132895U patent/CN201280983Y/en not_active Expired - Fee Related
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 |
| CN112128985A (en) * | 2019-06-25 | 2020-12-25 | 芜湖美的厨卫电器制造有限公司 | Gas water heater's gas adjusting device and gas water heater that has it |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000, Guangming Village, Guangming town, Guangdong, Shenzhen Province second floor, C Science Park, Xin Sheng Park, carp water industry zone Patentee after: Jinqi Rane-Earth Motor Co., Ltd., Shenzhen Address before: 518055 Guangdong city of Shenzhen province Nanshan District West Village Industrial Zone, Huangjiang Lifu optical A33 building 4 floor Patentee before: Jinqi Rane-Earth Motor Co., Ltd., Shenzhen |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20121104 |