CN2705617Y - Low heat value gas fuel mixer for IC engine - Google Patents
Low heat value gas fuel mixer for IC engine Download PDFInfo
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- CN2705617Y CN2705617Y CN 200420042845 CN200420042845U CN2705617Y CN 2705617 Y CN2705617 Y CN 2705617Y CN 200420042845 CN200420042845 CN 200420042845 CN 200420042845 U CN200420042845 U CN 200420042845U CN 2705617 Y CN2705617 Y CN 2705617Y
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Abstract
The utility model discloses a kind of internal-combustion engine low calorific value gas fuel mixing arrangement, belong to internal-combustion engine gas fuel mixing arrangement field, it comprises the gas mixing tube of a three-way pipe structure, gas butterfly valve and air butterfly valve, one of them arm of the gas mixing tube of described three-way pipe structure is a gas inlet pipe, another arm is an air intake duct, the 3rd arm is for blending tracheae, gas butterfly valve, air butterfly valve lay respectively at the front end of gas inlet pipe, air intake duct, and the bore of the suction tude corresponding with it matches.Mixing arrangement of the present utility model can improve the calorific value of low calorific value gas fuel, thereby improves the thermal efficiency of low calorific value gas fuel; The simple science of structural type; Use simply, processing ease, easy to maintenance; Do not need to change the internal structure of raw-gas motor, need only in former engine gas import, install additional and get final product; Can be developed as the energy to a large amount of biomass castoffs, turn waste into wealth.
Description
Technical field
The utility model relates to a kind of internal-combustion engine gas fuel mixing arrangement, particularly relates to a kind of internal-combustion engine low calorific value gas fuel mixing arrangement.
Background technique
Gaseous fuel can be divided into two kinds of high heating value gaseous fuel and low calorific value gas fuels.As rock gas, in internal-combustion engine, be well used as a kind of high heating value gaseous fuel.And low calorific value gas fuel, but as burning the coal gas that plant produces, if as the gaseous fuel of internal-combustion engine, then calorific value is low causes the efficiency of internal combustion engine to descend and can not get paying attention to.There is a large amount of biomass castoffs every year in China at present, need handle as wood chip, rice husk, stalk etc., and the biomass resource that wherein can be developed as the energy reaches 300,000,000 tons of mark coals.Owing to lack effective processing method, existing processing means are still field burning mainly.If can utilize carbide feed generator that but the living beings waste material is converted to coal gas, the cylinder of input internal-combustion engine does work, and produces power or electric power, just should be one of mode of utilizing the most effective, most economical, the environmental protection of living beings waste material present stage.The living beings waste material is mainly carbon monoxide through the flammable gas composition that carbide feed generator gasification back produces, and carbon monoxide content is between 15～25%, and calorific value is at 3975kJ/m
3～4395kJ/m
3Between, calorific value is lower, make coal gas and Air mixing be difficult to the state that reaches preferable, cause the decrease in efficiency of the internal-combustion engine that uses the biogas fluid fuel a lot, but and contain the hydrogen of certain component in the coal gas, very easily produce detonation, cause that the combustion process of internal-combustion engine is difficult to control, cause the motor effective output lower.Therefore, do motor fuel if low calorific value gas fuel is directly applied to existing internal-combustion engine gas fuel mixing arrangement mixing air, internal-combustion engine almost can't be worked.
Chinese invention patent has been announced a kind of " mixed fuel that internal-combustion engine is used and Air mixing device ", application number is 01123160.2, be a kind of with liquid gas, propane, the gaseous fuel of higher calorific values such as butane is as the gaseous fuel mixing device of motor fuel, it comprises the cylinder body of a columniform hollow, one port is an air intlet, the another port is a mixed gas outlet, the hollow body of a truncated cone form of sealing in this body, the sealing-in of one end is in the mixed gas outlet of cylinder body, form an annular infusion chamber between body and the cylinder body, on cylinder wall, laterally connect the gaseous fuel pipeline of bore much smaller than the cylinder body bore, thereby form the structure of a three-way pipe, but this mixing arrangement is because the gaseous fuel and the Air mixing ratio that set are different from low-calorie gaseous fuel and Air mixing ratio, so it can not be applied to the situation that low calorific value gas fuel is done motor fuel.Adapt to.
The model utility content
The purpose of this utility model is to provide a kind of gaseous fuel mixing device that can make low calorific value gas fuel as motor fuel, and it can improve the calorific value of low calorific value gas fuel, thereby improves the thermal efficiency of low calorific value gas fuel.
For achieving the above object, the technological scheme that the utility model adopted is: a kind of internal-combustion engine low calorific value gas fuel mixing arrangement, the gas mixing tube that comprises a three-way pipe structure, it is characterized in that: further comprising gas butterfly valve and air butterfly valve, one of them arm of the gas mixing tube of described three-way pipe structure is a gas inlet pipe, another arm is an air intake duct, the 3rd arm is for blending tracheae, gas butterfly valve, air butterfly valve lay respectively at the front end of gas inlet pipe, air intake duct, and the bore of the suction tude corresponding with it matches.
Gas inlet pipe on the described gas mixing tube is with to blend tracheae coaxial, the axis of air intake duct with blend the tracheae axis normal.
For the coal gas in the gas mixing tube is fully mixed with air, described air intake duct three arm concourses in gas mixing tube directly connect a guiding bend pipe, the outlet of this guiding bend pipe enters and blends in the feed channel, but and blend and leave territory, one section mixed gas area between the tracheae port, and form a doughnut by inwall that blends tracheae and guiding bend pipe outer wall.By the middle part that guides bend pipe air to be introduced the coal gas air-flow, utilize two kinds of gases of air and coal gas flow velocity separately in doughnut trunnion effect different and that cause because of changes of section again, the gas flow rate of mixing is changed, and produce turbulent flow, make coal gas and the well-mixed purpose of air thereby reach to greatest extent.
The utility model can be done following improvement, and the air inlet tube wall that the valve body of described air butterfly valve is corresponding with it is integrated, and the valve plate of air butterfly valve then is installed in respectively on the air inlet tube wall by valve rod.
For reducing the resistance that butterfly valve causes air-flow, and improve the sensitivity that butterfly valve is opened, the arm medial axis at valve plate when described gas butterfly valve and air butterfly valve are closed and place is 30 °～80 ° angle.
For realizing the interlock of gas butterfly valve and air butterfly valve, valve rod on described gas butterfly valve and the air butterfly valve valve plate is positioned at the outer end of its branch pipe wall and respectively is connected with a rocking arm, one end of the adjusting connecting rod that the other end of described two rocking arms adapts with a length and the two rocking arms distance respectively linkage mechanism that constitutes by an active connection, while also fixedly connected coal gas door rocking arm on the gas butterfly valve valve rod, by this rocking arm valve rod is connected with the speed regulator of motor, this rocking arm is directly controlled by the speed regulator of motor when motor moves, motor is because the variation of factors such as load can be controlled the coal gas door rocking arm amplitude of oscillation by speed regulator, and then control gas butterfly valve valve port opening, drive described linkage mechanism simultaneously and make the air butterfly valve interlock do corresponding aperture adjustment.
The flexible connection of described adjusting connecting rod two ends and rocking arm is a hinging structure.
For adapting to the pairing different coal gas-air proportions of ingredients of different low calorie fuelss, just need to control better the different unlatching ratios of air butterfly valve and gas butterfly valve, to reach the required coal gas-air proportions of ingredients of the normal operation of gas engine, the screw rod in the described adjusting connecting rod and the movable connection structure of rocking arm by be positioned at locating slot or at least two positioning holes on the rocking arm and be positioned at the screw rod end mounting hole and and locating slot, mounting hole, locking screw screw bolt and nut that positioning hole is complementary constitutes, and is passed by bolt that jack panel makes rocking arm and screw rod flexible connection on rocking arm locating slot or hole and the screw rod mounting hole.
For further cooperating the different unlatching ratios of control air butterfly valve and gas butterfly valve, described adjusting connecting rod by a swivel nut with two-way internal thread and two respectively rotation set constitute at the screw rod of swivel nut one end, the outer end of two screw rods flexibly connects with gas butterfly valve rocking arm and air butterfly valve rocking arm respectively.
Because butterfly valve in actual use, the variation that its circulation area is opened corner with butterfly valve is not to be linear variation fully, thereby causes proportions of ingredients that tiny variation takes place, thereby causes the performance inconsistency of motor easily; In addition, owing to biomass gas because of raw material and as gas producer burning control the variation that reason such as fluctuation can cause combustible gas component etc., also can cause the coal gas-air proportions of ingredients to fluctuate, and motor its load in running also may increase and decrease, for overcoming the adverse effect that above-mentioned situation is brought, can on the air intake duct behind the air butterfly valve, set up the replenish air structure, promptly on the tube wall of air intake duct, offer air intake window, a valve is installed on the air intake window.Regulate the size of the flow area aperture of air intake window by valve, thereby control the amount of replenish air, to realize the stable purpose of coal gas-air proportions of ingredients.
The beneficial effects of the utility model are: (1) is skillfully constructed, reasonable in design, the simple science of structural type, utilize the trunnion effect that two kinds of gases flow velocity separately is different and changes of section causes, the gas flow rate of mixing is changed and produce turbulent flow, realize that coal gas and air fully mix, to improve the thermal efficiency of low calorific value gas fuel; (2) use simply, processing ease, easy to maintenance, by adjusting the length of coal gas-air connecting rod, make the different unlatching ratios of two ends connection air intlet and gas inlet butterfly valve, to reach the required coal gas-air mixed proportion of the normal operation of gas engine; (3) have very big adaptability on the middling speed high-power diesel engine, the internal structure that does not need to change the raw-gas motor need only install the utility model additional in former engine gas import and just can realize purpose of the present invention, thereby manufacture cost is very low; (4) turn waste into wealth, can be developed as the energy to a large amount of biomass castoffs, but utilize carbide feed generator that the living beings waste material is converted to coal gas, by the utility model with inflammable gas and air mixing, the cylinder of input internal-combustion engine does work, and produces power or electric power.
Description of drawings
Fig. 1 is one of an embodiment's of the present utility model structural representation;
Fig. 2 is embodiment's of the present utility model two a structural representation.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
That shown in Figure 1 is one of the utility model embodiment, it is mainly by the gas mixing tube 1 of a three-way pipe structure, air butterfly valve 3, regulate connecting rod 4, be positioned at the gas butterfly valve Rocker arm 5 on the valve rod 21 of gas butterfly valve 2, be positioned at the air butterfly valve rocking arm 6 on the valve rod 31 of air butterfly valve 3, guiding bend pipe 7 and replenish air structure constitute, one of them arm of described gas mixing tube 1 is a gas inlet pipe 11, another arm coaxial with it is for blending tracheae 13, the 3rd axis is an air intake duct 12 with the arm that blends the tracheae axis normal, gas butterfly valve 2 is positioned at the front end of gas inlet pipe 11, and match with the bore of gas inlet pipe 11, the air inlet tube wall that the valve body of air butterfly valve 3 is corresponding with it is integrated, and 32 of the valve plates of air butterfly valve 3 are installed on the air inlet tube wall by valve rod 31.For reducing the resistance that butterfly valve causes air-flow, and improve the sensitivity that butterfly valve is opened, the valve plate 22,32 when described gas butterfly valve 2 and air butterfly valve 3 are closed and the arm medial axis at place are 45; The air butterfly valve rocking arm 6 of described gas butterfly valve Rocker arm 5 is installed in gas butterfly valve valve rod 21 respectively and air butterfly valve valve rod 22 is positioned at the outer end of its branch pipe wall, two Rocker arm 5s, 6 the other end respectively with an end of described adjusting connecting rod 4 linkage mechanism that constitutes by an active connection, while also fixedly connected coal gas door rocking arm 8 on gas butterfly valve valve rod 21, by this rocking arm 8 valve rod 21 is connected with the speed regulator of motor, this rocking arm 8 is directly controlled by the speed regulator of motor when motor moves, and then control gas butterfly valve 2 valve port opening, drive described linkage mechanism simultaneously and make air butterfly valve 3 interlocks do corresponding aperture adjustment; Described adjusting connecting rod 4 by a swivel nut 41 with two-way internal thread and two respectively rotation set constitute at the screw rod 42 of swivel nut 41 1 ends, the outer end of two screw rods 42 flexibly connects with gas butterfly valve Rocker arm 5 and air butterfly valve rocking arm 6 respectively; Screw rod 42 in the described adjusting connecting rod 4 and Rocker arm 5,6 movable connection structure are by being positioned at the locating slot 51,61 on the Rocker arm 5,6 and being positioned at the mounting hole of screw rod 42 outer ends and constituting with locking screw screw bolt and nut that locating slot 51,61, mounting hole are complementary, pass locating slot 51,61 on the rocking arm and the mounting hole on the screw rod 42 by bolt, screw nut then rocking arm and screw rod are flexibly connected; Described guiding bend pipe 7 directly is connected with air intake duct 12 three arm concourses in gas mixing tube 13, its outlet enters and blends in the tracheae 13, but and blend and leave territory, one section mixed gas area between tracheae 13 ports, and form a doughnut 9 by inwall that blends tracheae and guiding bend pipe outer wall, by the middle part that guides bend pipe air to be introduced the coal gas air-flow, utilize two kinds of gases of air and coal gas flow velocity separately in doughnut trunnion effect different and that cause because of changes of section again, the gas flow rate of mixing is changed, and produce turbulent flow, make coal gas and the well-mixed purpose of air thereby reach to greatest extent; Described replenish air structure is positioned on the air intake duct 12 behind the air butterfly valve 2, promptly offers air intake window 101 on the tube wall of air intake duct 12, and a valve 102 is installed on the air intake window 101.Regulate the size of the flow area aperture of air intake window 101 by valve 102, thereby control the amount of replenish air, to realize the stable purpose of coal gas-air proportions of ingredients.During use,, can make mixed gas do work, produce power or electric power from the cylinder that the mouth of pipe that blends tracheae 13 enters internal-combustion engine or motor as long as the tracheae 13 that blends of this device is docked with former engine gas import.
Structure is embodiment's of the present utility model two as shown in Figure 2, and one of it and embodiment's difference is that the flexible connection of described adjusting connecting rod two ends and rocking arm is a hinging structure.
Generally between-2.0kPa～2.45kPa, the biomass gas lower calorific value is between 3975kJ/m3～43 95kJ/m3 for the biomass combustible gas pressure that mixing arrangement of the present utility model is suitable for, and the gas engine maximum output is 450 kilowatts.Through experiment, this mixing arrangement is used on two kinds of biomass gas motors, and its effect all reaches designing requirement, and these two kinds of gas engines all are to be converted by domestic existing big cylinder-diameter diesel engine (250 bore diesel engines of 6 cylinders and 8 cylinders).
Claims (10)
1, a kind of internal-combustion engine low calorific value gas fuel mixing arrangement, the gas mixing tube that comprises a three-way pipe structure, it is characterized in that: further comprising gas butterfly valve and air butterfly valve, one of them arm of the gas mixing tube of described three-way pipe structure is a gas inlet pipe, another arm is an air intake duct, the 3rd arm is for blending tracheae, and gas butterfly valve, air butterfly valve lay respectively at the front end of gas inlet pipe, air intake duct, and the bore of the suction tude corresponding with it matches.
2, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 1 is characterized in that: the gas inlet pipe on the described gas mixing tube is with to blend tracheae coaxial, the axis of air intake duct with blend the tracheae axis normal.
3, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 2, it is characterized in that: described air intake duct three arm concourses in gas mixing tube directly connect a guiding bend pipe, the outlet of this guiding bend pipe enters and blends in the feed channel, but and blend and leave territory, one section mixed gas area between the tracheae port, and form a doughnut by inwall that blends tracheae and guiding bend pipe outer wall.
4, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 2, it is characterized in that: the air inlet tube wall that the valve body of described air butterfly valve is corresponding with it is integrated, and the valve plate of air butterfly valve then is installed in respectively on the air inlet tube wall by valve rod.
5, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 3, it is characterized in that: the arm medial axis at valve plate when described gas butterfly valve and air butterfly valve are closed and place is 30 °～80 ° angle.
6, according to claim 1 or 2 or 3 or 4 or 5 described internal-combustion engine low calorific value gas fuel mixing arrangements, it is characterized in that: the valve rod on described gas butterfly valve and the air butterfly valve valve plate is positioned at the outer end of its branch pipe wall and respectively is connected with a rocking arm, the other end of described two rocking arms respectively with an end of the regulating connecting rod linkage mechanism that constitutes by an active connection, an also fixedly connected coal gas door rocking arm on the gas butterfly valve valve rod makes valve rod connect with the speed regulator of motor by this rocking arm simultaneously.
7, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 6, it is characterized in that: hinging structure is become in the flexible connection of described adjusting connecting rod two ends and rocking arm.
8, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 7, it is characterized in that: the screw rod in the described adjusting connecting rod and the movable connection structure of rocking arm be by being positioned at locating slot or at least two positioning holes on the rocking arm and being positioned at the mounting hole of screw rod end and constituting with locking screw screw bolt and nut that locating slot, mounting hole, positioning hole are complementary, passed by bolt that jack panel makes rocking arm and screw rod flexible connection on rocking arm locating slot or hole and the screw rod mounting hole.
9, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 6, it is characterized in that: described adjusting connecting rod by a swivel nut with two-way internal thread and two respectively rotation set constitute at the screw rod of swivel nut one end, the outer end of two screw rods flexibly connects with gas butterfly valve rocking arm and air butterfly valve rocking arm respectively.
10, internal-combustion engine low calorific value gas fuel mixing arrangement according to claim 7 is characterized in that: set up the replenish air structure on the air intake duct behind the air butterfly valve, promptly offer air intake window on the tube wall of air intake duct, a valve is installed on the air intake window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420042845 CN2705617Y (en) | 2004-02-24 | 2004-02-24 | Low heat value gas fuel mixer for IC engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420042845 CN2705617Y (en) | 2004-02-24 | 2004-02-24 | Low heat value gas fuel mixer for IC engine |
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| Publication Number | Publication Date |
|---|---|
| CN2705617Y true CN2705617Y (en) | 2005-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420042845 Expired - Fee Related CN2705617Y (en) | 2004-02-24 | 2004-02-24 | Low heat value gas fuel mixer for IC engine |
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| Country | Link |
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| CN (1) | CN2705617Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359152C (en) * | 2004-02-24 | 2008-01-02 | 广州市宇联机电有限公司 | Apparatus of mixing low thermal value fuel of combustion engine |
| CN103452651A (en) * | 2013-09-16 | 2013-12-18 | 淄博淄柴新能源有限公司 | Inside-mixing large-bore high-hydrogen-content gas engine |
-
2004
- 2004-02-24 CN CN 200420042845 patent/CN2705617Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359152C (en) * | 2004-02-24 | 2008-01-02 | 广州市宇联机电有限公司 | Apparatus of mixing low thermal value fuel of combustion engine |
| CN103452651A (en) * | 2013-09-16 | 2013-12-18 | 淄博淄柴新能源有限公司 | Inside-mixing large-bore high-hydrogen-content gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050622 Termination date: 20100224 |