CN2446289Y - Gas feeder of small automotive liquefied gas engine - Google Patents
Gas feeder of small automotive liquefied gas engine Download PDFInfo
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- CN2446289Y CN2446289Y CN 00221691 CN00221691U CN2446289Y CN 2446289 Y CN2446289 Y CN 2446289Y CN 00221691 CN00221691 CN 00221691 CN 00221691 U CN00221691 U CN 00221691U CN 2446289 Y CN2446289 Y CN 2446289Y
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- valve
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- petroleum gas
- joint
- reduction valve
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Abstract
The utility model relates to a gas feeder of a small automotive liquefied gas engine, which comprises a liquefied gas cylinder, a pressure reducing valve, electromagnetic valves and mixers, wherein, controlling circuits of the electromagnetic valves are electrically connected with the electromagnetic valves; the space between the liquefied gas cylinder and the mixers is connected with the electromagnetic valves and secondary or many times pressure reducing valves. The utility model is characterized in that the working pressure of liquefied gas is not influenced by environment temperature and continuous working time; stable working pressure of the liquid gas can be kept; the adjustment of the outlet pressure of the liquefied gas is needless when the utility model is used; the troubles that the liquid gas engine is difficult to start, and the proper working pressure can get from that the outlet pressure of the pressure reducing valves need to be frequently adjusted are solved. The utility model has the advantage of convenient and reliable operation.
Description
The utility model relates to a kind of compact car liquefied petroleum gas engine air feeder.
Existing compact car liquefied petroleum gas engine air feeder; sell the liquid gas motorcycle of Jiangsu vast stretch of wooded country machinery Group Plc as the 7th disclosed Chinese patent CN2315313Y of research institute research institute's July 1st one " LG boosting cycle, motorcycle " of shipping industry parent company and existing market; reduction valve in its liquefied petroleum gas engine air feeder adopts the reduction valve of a single-stage; a common shortcoming is in use all arranged: in use; need often to regulate the outlet pressure of reduction valve, otherwise cause the engine start difficulty sometimes.And the former is when using, and its highest speed can be affected, and highest speed is run lower and lower.This is to change because of the variation of the pressure following temperature in the liquified petroleum gas cylinder, winter temperature is in the time of 0 ℃, the about 300KPa of the saturation vapour pressure of mixed liquefied gas, during 40 ℃ of summers, the about 1000KPa of saturation vapour pressure, its saturation vapour pressure differs greatly: season in spring and autumn sooner or later when noon, temperature differed big, saturated vapor tension differs also very big in one day; Simultaneously owing to do not have the evaporation pressure regulator parts in the air feeder, be directly to use LNG gasifaction, the interior gas pressure of liquified petroleum gas cylinder is a saturation vapour pressure during starting cold, liquid gas maximum pressure for prevailing circumstances temperature, and after the vehicle operating, LNG gasifaction pressure in the liquid gas gas cylinder just becomes unsaturated steam presses, and promptly the pressure in the gas cylinder has reduced.Because the critical temperature of liquid lng is higher, propane and butane as the liquid gas Main Ingredients and Appearance, its critical temperature is respectively 95.60 ℃ and 152.8 ℃, and the atmosphere environment temperature is mostly below 40 ℃, so liquid lng is evaporated to gaseous liquefied gas with regard to heat absorption at normal temperatures.The liquefied petroleum gas engine operating time is long more, and the liquefaction tolerance of consumption is many more, and liquid gas is evaporated to the also many of gaseous state from liquid state, and the temperature of liquid gas also descends manyly thereupon, and the gas pressure in the gas cylinder falls very lowly thereupon.Above-mentioned three kinds of situations are the liquified petroleum gas cylinder variation of gas pressure that season, temperature change caused, temperature change in one day and the gas cylinder variation of gas pressure that causes, especially in the liquefied petroleum gas engine liquified petroleum gas cylinder in service along with continuous use liquid gas what and the gas pressure change that causes is also very big, in a word, the variation in pressure of reduction valve import front end is very big, and this is on the one hand.And on the other hand, the outlet pressure of reduction valve, that is enter mixer liquid gas working pressure before, usage requirement pressure is both very low very stable again.For example, the working pressure of general liquid gas usually at 8KPa to a selected optimum working pressure between the 60KPa (because of the structure and the performance of various mixers differs, engine displacement technical parameter different and same displacement engine is different with workmanship, the liquid gas working pressure can not be completely unified), for example, the liquid gas motorcycle (containing trail bike) of a certain vehicle is selected as best liquid gas working pressure to be at 30KPa, the working pressure wave range of its permission has only positive and negative 10KPa usually, sometimes can only positive and negative 5KPa, if exceed this wave range, then can cause the liquefied petroleum gas engine starting difficulty, sometimes even do not start, the optimum discharge value of having set up also can surpass.If adapting to this inlet pressure, the voltage adjustment characteristic of reduction valve do not alter a great deal, and the both low highly stable usability requirement of outlet pressure, the outlet pressure that relies on pressure gauge with regard to having to and often regulate reduction valve uses very inconvenient to reach required working pressure.And motorcycle can produce vibration under steam, and pressure gauge is easy to damage.
The purpose of this utility model provides a kind of need not and often the outlet pressure of liquid gas is regulated, and just can keep the stable compact car of liquid gas working pressure liquefied petroleum gas engine air feeder
Further purpose of the present utility model provides a kind of compact car liquefied petroleum gas engine air feeder of being convenient to dispatch from the factory or the liquid gas working pressure being adjusted when overhauling.
The utility model further purpose provide a kind of at liquid gas impurity more for a long time, can be to the compact car that liquid gas filters liquefied petroleum gas engine air feeder.
The utility model is that the technological scheme that achieves the above object is: a kind of compact car liquefied petroleum gas engine air feeder, comprise liquified petroleum gas cylinder, reduction valve, solenoid valve and mixer, solenoid valve control circuit is electrically connected with solenoid valve, it is characterized in that: the reduction valve that is connected with the above decompression of solenoid valve and secondary or secondary between liquified petroleum gas cylinder and the mixer.
Wherein reduction valve can be the single-stage pressure reducing valve serial connection formation more than two or two.
Wherein reduction valve can be that the reduction valve serial connection of a single-stage pressure reducing valve and secondary or the above decompression of secondary constitutes.
Wherein reduction valve can be the reduction valve formation of a secondary or the above decompression of secondary.
The utility model is that the technological scheme that reaches above-mentioned further purpose is: pressure pointer or pressure scale dish are housed on the pressure adjusting screw of reduction valve, and constitute corresponding outlet pressure indicating device with pressure reference sign on its valve gap, and the outlet plenum of reduction valve is communicated with outlet pressure measurement interface.
The utility model for reaching above-mentioned further purpose technological scheme is: the outlet port of liquified petroleum gas cylinder is provided with filter element.
In the angle valve of liquified petroleum gas cylinder joint is housed, the joint front end is provided with seal element, and be tightly connected with angle valve, the ventilation handwheel is threaded with angle valve, and joint is pressed in the angle valve, joint air inlet front end inner chamber is equipped with filter element, and the joint outlet side is provided with seal ring and is connected with the suction port of reduction valve.
Described reduction valve is a filtering pressure reducing valve, comprise valve gap, pressure regulating part, diaphragm parts, valve rod, flap assembly and joint, in the angle valve of liquified petroleum gas cylinder joint is housed, the joint front end is provided with seal element, and is tightly connected with angle valve, and the ventilation handwheel is threaded with angle valve, and joint is pressed in the angle valve, joint front end inner chamber is equipped with filter element successively, flap mechanism and valve rod, and the joint outlet side is provided with seal ring and is connected with the valve outlet chamber of reduction valve.
The utility model adopts the advantage after the technique scheme to be: 1, because compact car of the present utility model has adopted the reduction valve of secondary or the above decompression of secondary as the reduction valve in the air feeder with the liquefied petroleum gas engine air feeder, therefore the liquid gas that comes out from liquified petroleum gas cylinder at first carries out the decompression first time in reduction valve, LNG gasifaction pressure in the gas cylinder is carried out significantly step-down, at this moment, though the relative liquid gas working pressure of gas pressure is still higher after decompression for the first time, change also bigger, but this moment, compare with the air pressure in the gas cylinder will be low a lot, and variation in pressure is also much smaller.Lifting some concrete numerals illustrates, for example for the first time reduce pressure 100KPa to a certain value between the 150KPa, the wave range of variation in pressure is within positive and negative 20KPa, this air pressure is as the inlet pressure before reducing pressure for the second time, pressure is quite low, pressure oscillation is also quite little, carry out the decompression second time on this basis again, pressure regulation, outlet pressure very easy to control at 8KPa between the 60KPa, allow the performance of user according to mixer, engine displacement and accuracy of manufacturing thereof are selected a certain best liquid gas working pressure, and the lasting accuracy of pressure can be controlled within the positive and negative 5KPa fully.Owing to adopted this technological scheme, make the working pressure of liquid gas not be subjected to pressure size in the liquified petroleum gas cylinder and the influence that changes substantially, thereby the influence that is subjected to ambient temperature also seldom, the liquid gas motorcycle in use, still be hot car starting no matter at starting cold, because the liquid gas working pressure is stable, the phenomenon that can cause the engine start difficulty or the speed of a motor vehicle to improve not, in use also with regard to need not the outlet pressure of reduction valve is regulated, the user is very easy to use.2, because the liquid gas working pressure is stable, so can cancel the pressure gauge of rapid wear, debug and overhaul in the debug process working pressure when dispatching from the factory first and adjust, on reduction valve, be provided with outlet pressure indicating device and outlet pressure and measure interface, use easily liquid gas.3, owing to increased filter element in the liquified petroleum gas cylinder outlet port, can filter liquid gas, no larger particles impurity etc. is entered in reduction valve and the solenoid valve, with the proper functioning of assurance valve.
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Fig. 1 is compact car of the present utility model one of liquefied petroleum gas engine air feeder structural representation.
Fig. 2 is two of a compact car usefulness liquefied petroleum gas engine air feeder structural representation of the present utility model.
Fig. 3 is three of a compact car usefulness liquefied petroleum gas engine air feeder structural representation of the present utility model.
Fig. 4 is four of a compact car usefulness liquefied petroleum gas engine air feeder structural representation of the present utility model.
Fig. 5 is five of a compact car usefulness liquefied petroleum gas engine air feeder structural representation of the present utility model.
Fig. 6 is one of structural representation of the preferential reduction valve that adopts of the utility model.
Fig. 7 be the preferential reduction valve that adopts of the utility model structural representation two.
Fig. 8 is one of reduction valve of the present utility model and liquified petroleum gas cylinder linkage structure schematic representation.
Fig. 9 is two of reduction valve of the present utility model and a liquified petroleum gas cylinder linkage structure schematic representation.
Figure 10 is three of reduction valve of the present utility model and a liquified petroleum gas cylinder linkage structure schematic representation.
Compact car of the present utility model liquefied petroleum gas engine air feeder shown in Fig. 1～5, comprise liquified petroleum gas cylinder 1, reduction valve 2, solenoid valve 3 and mixer 5, a suction port of mixer 5 connects liquid gas, another suction port of mixer 5 communicates with air-strainer 7, the outlet of mixer 5 is connected with motor 6 suction ports, solenoid valve control circuit 4 is electrically connected with solenoid valve 3, and wherein solenoid valve control circuit 4 adopts existing on the market switching circuit.The reduction valve 2 that between liquified petroleum gas cylinder 1 and mixer 5, is connected with solenoid valve 3 and secondary or reduces pressure more than the secondary.As shown in Figure 1, reduction valve 2 can be arranged on the front portion of solenoid valve 3; Also can be as shown in Figure 2, reduction valve 2 is arranged on the rear portion of solenoid valve 3.Shown in Fig. 3,5, reduction valve 2 can be that the single-stage pressure reducing valve serial connection more than two or two constitutes; Reduction valve 2 also can be that the reduction valve serial connection of a single-stage pressure reducing valve and secondary or the above decompression of secondary constitutes.Reduction valve 2 shown in Fig. 1,2,4 is that a secondary or the reduction valve that reduces pressure more than the secondary constitute.By the secondary decompression, make the working pressure of liquid gas keep stable, to reach best air feed state, the influence that hot and cold car starting all is not subjected to the interior gas pressure size of liquified petroleum gas cylinder and changes.
Compact car of the present utility model liquefied petroleum gas engine air feeder, used reduction valve 2 preferentially uses as Fig. 6, genus shown in Figure 7 is manually adjustable, directly effect, do not have and leak, film (sheet) balanced type reduction valve, the reduction valve of this kind structure is mainly by having into, air outlet 2-9, the valve body 2-10 of 2-18 and valve gap 2-4, be equipped with on the valve gap 2-4 by Manual pressure adjusting screw rod 2-1, locking nut 2-23, pressure adjusting spring seat 2-5, the pressure regulating mechanism that pressure adjusting spring 2-6 forms, be equipped with by flap 2-14 the bottom of valve body 2-10, soft sealing gasket 2-15 on the flap 2-14, Returnning spring 2-13, the flap assembly that plug screw 2-12 forms is equipped with seal ring 2-11 between plug screw 2-12 and the valve body 2-10.The film balanced controls of being made up of diaphragm 2-8, diaphragm pad 2-7, valve rod 2-20 between the top of valve body 2-10 and valve gap 2-4, valve gap 2-4 is provided with the spiracle 2-22 that diaphragm 2-8 moves up and down.As shown in Figure 6, wherein the upper end of valve rod 2-20 by nut 2-21 with diaphragm 2-8 and fixedly connected being integral of diaphragm pad 2-7, the lower end of valve rod 2-20 is threaded with connecting rod on the flap 2-14, to reduce the leakage of stopping and may produce between the valve seat 2-16 and soft sealing gasket 2-15 when not using.Reduction valve as shown in Figure 7 and reduction valve shown in Figure 6 have two place's differences, are not threaded between first valve rod 2-20 and the flap 2-14.They are two years old, the low pressure liquefied gas of valve body 2-10 outlet plenum 2-19 can enter into the bottom of flap 2-14 by vent 2-26, communicate with the flap spring chamber, O RunddichtringO 2-25 is housed to isolate the import pressurized gas of suction port 2-9 on the flap 2-14, makes the gas pressure of outlet plenum 2-19 not be subjected to the gas pressure size in the liquified petroleum gas cylinder 1 and the influence of variation in pressure.
For ease of in dispatching from the factory or overhauling, the liquid gas working pressure being adjusted, shown in Fig. 6～10, pressure pointer or pressure scale dish 2-2 are housed on the pressure adjusting screw 2-1 of reduction valve 2, and constituting corresponding outlet pressure indicating device with pressure reference sign 2-3 on its valve gap 2-4, this pressure scale dish 2-2 mixes up when dispatching from the factory and then is fastened on the pressure adjusting screw 2-1 with Cock screw 2-24.The working pressure of liquid gas is measured interface 2-17 and is communicated with the outlet plenum 2-19 of reduction valve 2, this interface is blocked with seal ring 10 and plug 11 at ordinary times, dispatching from the factory or vehicle when after use, needing to overhaul for new car, plug 11 is pulled down, connect pressure gauge at this pressure measurement interface 2-17 and measure, with the outlet pressure indicated value of accurate adjustment liquid gas working pressure and outlet pressure mechanism.Shown in Fig. 6,7,9,10,, can on the valve body 2-10 of reduction valve 2, directly be provided with outlet pressure and measure interface 2-17 for reducing the volume of air feeder.If enough spaces are arranged, also can on the pipeline of reduction valve 2 outlets, be provided with outlet pressure and measure interface.
On above-mentioned basis for to guarantee that the liquid gas that enters reduction valve 2 does not have foreign material such as larger particles, make between the valve seat 2-16 of reduction valve 2 and the soft sealing gasket 2-15 and solenoid valve valve Cuo and soft sealing gasket between exist impurity to produce chronic leakage during not because of parking, when liquid gas impurity more for a long time, the outlet port of liquified petroleum gas cylinder is provided with filter element 8, also can be as shown in Figure 6, filter element 8 is set directly in the suction port 2-9 of reduction valve 2.
As shown in Figure 8, when liquified petroleum gas cylinder 1 directly is connected with reduction valve 2 by joint 13, in the angle valve 1-1 of liquified petroleum gas cylinder 1 joint 13 is housed, joint 13 front ends are provided with seal element 12, and be tightly connected with angle valve 1-1, ventilation handwheel 1-2 is threaded with angle valve 1-1, and joint 13 is pressed in the angle valve 1-1, joint 13 front end inner chambers are equipped with filter element 8, and joint 13 outlet sides are provided with seal ring 14 and are connected with the suction port 2-9 of reduction valve 2.
Shown in Fig. 9,10, its reduction valve 2 is a filtering pressure reducing valve, comprises valve gap 2-4, pressure regulating part, diaphragm parts, valve rod 2-20, flap assembly and joint 13.In the angle valve 1-1 of liquified petroleum gas cylinder 1 joint 13 is housed, joint 13 front ends are provided with seal element 12, and be tightly connected with angle valve 1-1, ventilation handwheel 1-2 is threaded with angle valve 1-1, and joint 13 is pressed in the angle valve 1-1, joint 13 front end inner chambers are equipped with filter element 8, flap assembly and valve rod 2-20 successively, and joint 13 outlet sides are provided with seal ring 14 and are connected with the outlet plenum 2-19 of the valve body 2-10 of reduction valve 2.The difference of Fig. 9, Figure 10 is that valve rod 2-20 is different with the Placement of flap 2-14, the right-hand member of the valve rod 2-20 of filtering pressure reducing valve shown in Figure 9 by nut 2-21 with diaphragm 2-8 and fixedly connected being integral of diaphragm pad 2-7, the left side of valve rod 2-20 relies on the elastic force of Returnning spring 2-13 and pressure adjusting spring 2-6 to contact with right side, flap 2-14 center, but does not directly connect.And the right-hand member of its valve rod of filtering pressure reducing valve shown in Figure 10 2-20 by nut 2-21 with diaphragm 2-8 and fixedly connected being integral of diaphragm pad 2-7, but the left end of valve rod 2-20 is threaded with connecting rod on the flap 2-14, stop when not using, because of the effect of diaphragm equilibrant can reduce issuable leakage between valve seat 2-16 and the soft sealing gasket 2-15.
Claims (8)
1, a kind of compact car liquefied petroleum gas engine air feeder, comprise liquified petroleum gas cylinder (1), reduction valve (2), solenoid valve (3) and mixer (5), solenoid valve control circuit (4) is electrically connected with solenoid valve (3), it is characterized in that: the reduction valve (2) that is connected with the above decompression of solenoid valve (3) and secondary or secondary between liquified petroleum gas cylinder (1) and the mixer (5).
2, compact car according to claim 1 liquefied petroleum gas engine air feeder is characterized in that: reduction valve (2) can be that the single-stage pressure reducing valve serial connection more than two or two constitutes.
3, compact car according to claim 1 liquefied petroleum gas engine air feeder is characterized in that: reduction valve (2) can be that the reduction valve serial connection of a single-stage pressure reducing valve and secondary or the above decompression of secondary constitutes.
4, compact car according to claim 1 liquefied petroleum gas engine air feeder is characterized in that: reduction valve (2) can be that the reduction valve of a secondary or the above decompression of secondary constitutes.
5, according to one of claim 1 or 2 or 3 or 4 described compact car liquefied petroleum gas engine air feeder, it is characterized in that: pressure pointer or pressure scale dish (2-2) are housed on the pressure adjusting screw (2-1) of reduction valve (2), and constitute corresponding outlet pressure indicating device with pressure reference sign (2-3) on its valve gap (2-4), and the outlet plenum (2-19) of reduction valve (2) is communicated with outlet pressure measurement interface (2-17).
6, compact car according to claim 1 liquefied petroleum gas engine air feeder is characterized in that: liquified petroleum gas cylinder (1) outlet port is provided with filter element (8).
7, compact car according to claim 1 liquefied petroleum gas engine air feeder, it is characterized in that: in the angle valve (1-1) of liquified petroleum gas cylinder (1) joint (13) is housed, joint (13) front end is provided with seal element (12), and be tightly connected with angle valve (1-1), ventilation handwheel (1-2) is threaded with angle valve (1-1), and joint (13) is pressed in the angle valve (1-1), joint (13) air inlet front end inner chamber is equipped with filter element (8), and joint (13) outlet side is provided with seal ring (14) and is connected with the suction port (2-9) of reduction valve (2).
8, compact car according to claim 1 liquefied petroleum gas engine air feeder, it is characterized in that: reduction valve (2) is a filtering pressure reducing valve, comprise valve gap (2-4), pressure regulating part, the diaphragm parts, valve rod (2-20), flap assembly and joint (13), in the angle valve (1-1) of liquified petroleum gas cylinder (1) joint (13) is housed, joint (13) front end is provided with seal element (12), and be tightly connected with angle valve (1-1), ventilation handwheel (1-2) is threaded with angle valve (1-1), and joint (13) is pressed in the angle valve (1-1), joint (13) front end inner chamber is equipped with filter element (8) successively, flap assembly and valve rod (2-20), joint (13) outlet side are provided with seal ring (14) and are connected with valve body (2-10) outlet plenum (2-19) of reduction valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221691 CN2446289Y (en) | 2000-09-06 | 2000-09-06 | Gas feeder of small automotive liquefied gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221691 CN2446289Y (en) | 2000-09-06 | 2000-09-06 | Gas feeder of small automotive liquefied gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2446289Y true CN2446289Y (en) | 2001-09-05 |
Family
ID=33586550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00221691 Expired - Fee Related CN2446289Y (en) | 2000-09-06 | 2000-09-06 | Gas feeder of small automotive liquefied gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2446289Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943084B (en) * | 2009-07-10 | 2012-01-18 | 王旭光 | Gas supply system of compressed coke oven gas automobile |
| CN102352961A (en) * | 2011-07-27 | 2012-02-15 | 北京万源瀚德汽车密封系统有限公司 | Gas pressure stabilizing system |
-
2000
- 2000-09-06 CN CN 00221691 patent/CN2446289Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943084B (en) * | 2009-07-10 | 2012-01-18 | 王旭光 | Gas supply system of compressed coke oven gas automobile |
| CN102352961A (en) * | 2011-07-27 | 2012-02-15 | 北京万源瀚德汽车密封系统有限公司 | Gas pressure stabilizing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |