CN203363657U - Hydraulic piston type CNG (compressed natural gas) charging station - Google Patents
Hydraulic piston type CNG (compressed natural gas) charging station Download PDFInfo
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- CN203363657U CN203363657U CN 201320110737 CN201320110737U CN203363657U CN 203363657 U CN203363657 U CN 203363657U CN 201320110737 CN201320110737 CN 201320110737 CN 201320110737 U CN201320110737 U CN 201320110737U CN 203363657 U CN203363657 U CN 203363657U
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Abstract
The utility model discloses a hydraulic piston type CNG charging station which comprises a hydraulic air cylinder, a hydraulic reversing valve group and an oil tank as well as a double pump hydraulic system connected between the hydraulic reversing valve group and the oil tank through an oil line. According to the hydraulic piston type CNG charging station, a double pump device provided with double unloading valves is used for pumping oil in an oil chamber of the air cylinder, a pump pool a controls the oil pumping amount of a reversing valve and a pump pool b controls the oil pumping amount of a reversing valve independently according to the inlet pressure working condition, the power consumption is greatly reduced, the daily operation cost of the charging station is saved, and at the same time, the problem that the radially occupied space of a single pump hydraulic system device is large is solved.
Description
Technical field
The utility model relates to the compressed natural gas filling field, relates in particular to a kind of hydraulic piston type CNG Filling Station of low power consumption.
Background technique
It has natural gas, because low emission, suppresses greenhouse effect and break away from this three large feature of dependence to oil, just at world wide, is popularized and promotes.The hydraulic piston type CNG Filling Station refers to provides the place of fuel to gas-fueled vehicles (Natural Gas Vehicle) and large-scale CNG substation car with compressed natural gas (CNG) form.Hydraulic piston type CNG Filling Station (" gas station " is called for short in back) is mainly used in CNG air entraining substation field.The entrance of gas station is connected with the outlet valve group of CNG substation car, the outlet of gas station is provided with aerating sequence control dish, sequential disc connects high pressure, in low, low pressure gas storage well and gas selling machine, when above-mentioned gas storage well pressure, during lower than setting value, gas station starts gas is pressurized in order to the ceiling value of corresponding gas storage well, and be stored in the air cylinder group, finally by filling machine to the vehicle aerating.
Rock gas volume energy density is low, and it effectively stores to become promotes the use of the important technological problems that rock gas must solve.Compressed natural gas does work to rock gas by compressor exactly, the intermolecular spacing of rock gas is reduced, so that the capacity in unit volume increases, most widely used in the gas station field at present is exactly piston compressor, and piston compressor has again two kinds, mechanical piston compressor and hydraulic piston type compressor.The working principle of mechanical piston formula compressor is that driving machine drives crankshaft rotating, then by crankshaft & connecting, rotatablely moving of bent axle is converted to the linear motion of piston, and then natural gas boosting is done work.Mechanical piston formula compressor is because mechanical transmission component is more, so power loss is larger.And the hydraulic piston type compressor is to promote piston movement by the hydraulic oil after supercharging, and then rock gas is realized to compression.The compression efficiency of hydraulic piston type compressor is higher, and power loss is lower, and vibration simultaneously is less, has won very high market.But, current hydraulic piston type compressor adopts single unloading valve of simplex pump or duplex pump and is the driving of constant speed driving machine, supercharging whole process is flow setting type work, when the gas station inlet pressure is higher, such as: inlet pressure is greater than 10MPa, and hydraulic oil is most of gets back to fuel tank (5) by pressure controlled valve (24,40), power consumption penalty is larger, has wasted the energy.Meanwhile, the structure of the hydraulic piston type natural gas filling station of existing employing duplex pump as shown in Figure 1, this gas station mainly comprises selector valve group (3), hydraulic cylinder (2), duplex pump device (4), PLC controller (53), Manual relief valve (18,48), automatic relieving valve (21), fuel tank (5), wherein, the duplex pump device includes two the pump ponds (forming by 31 and 33) by same motor (34) driven pump oil shared oiler (32); selector valve group (3) comprises selector valve (11) and the pilot valve (12) that this selector valve commutation is controlled, pilot valve (12) is provided with return opening (show in Fig. 1 14) and oiler (show in Fig. 1 13), selector valve is provided with oiler and return opening (in Fig. 1, showing 15 and 16), also be provided with hydraulic fluid port (10) and hydraulic fluid port (17) that two oil pockets (7 and 8) for being separated by up and down with hydraulic cylinder (2) are communicated with respectively, the hydraulic cylinder two oil pocket outsides also are respectively arranged with lower air chamber (6 and 9), two oil outlets of duplex pump device (30 and 36) are communicated with oiler (15) in selector valve group (3) by one-way valve (28) and one-way valve (43) respectively, be respectively arranged with pressure controlled valve (24) and pressure controlled valve (40) with four interfaces on oil circuit between oil circuit between one-way valve (28) and oiler (15) and one-way valve (43) and duplex pump device (4), the entrance (25) of pressure controlled valve (24) with the outlet (27) of one-way valve (28), be communicated with and the control mouth (23) of pressure controlled valve (24) and fuel tank (5) between be arranged in parallel Manual relief valve (18) and automatic relieving valve (21), the instrument air port (19) of automatic relieving valve (21) is electrically connected to PLC controller (53) by solenoid valve (54), the return opening (16) of selector valve (11) is by heat exchanger (49), oil screen (50) is communicated with fuel tank (5), the refluxing opening (39) of pressure controlled valve (40) is connected on the oiler of heat exchanger (49) and it is controlled mouthful (41) and is connected with the control mouth (23) of fuel tank (5) and pressure controlled valve (24) with one-way valve (46) by Manual relief valve (48) respectively, also by inlet pressure transducer (52), the inlet pressure to two air cavitys (6 and 9) in hydraulic cylinder (2) is detected PLC controller (53).But this adopts the hydraulic piston type natural gas filling station of single automatic relieving valve (showing 21 in Fig. 1) to exist power consumption high, and oil temperature is high, the drawback that pipeline vibration is large, be badly in need of being updated.Therefore, provide a kind of power consumption penalty little, the natural gas filling station of the hydraulic piston type compressor of energy saving is very important.
The model utility content
The utility model provides a kind of hydraulic piston type CNG Filling Station, by being provided with the duplex pump device of two automatic relieving valves, compressed natural gas is carried out to supercharging, thereby reach the purpose of effective reduction compressed natural gas power consumption.
For achieving the above object, the utility model provides following technological scheme:
A kind of hydraulic piston type CNG Filling Station of low power consumption, mainly comprise selector valve group (3), hydraulic cylinder (2), duplex pump device (4), PLC controller (53), Manual relief valve (18, 48), automatic relieving valve (in Fig. 2, showing 21 and 58), fuel tank (5), duplex pump device (4) includes two the pump ponds (31 and 33) by same motor driven pump oil shared oiler, two oil outlets (30 of duplex pump device, 36) by one-way valve (28) and one-way valve (43), with the oiler (15) of selector valve (11) in selector valve group (3), be communicated with respectively, be respectively arranged with pressure controlled valve (24) and pressure controlled valve (40) with four interfaces on oil circuit between oil circuit between one-way valve (28) and oiler (15) and one-way valve (43) and duplex pump device (4), wherein, the control mouth (41) of pressure controlled valve (40) is connected with automatic relieving valve (showing 58 in Fig. 2), the instrument air port (59) of automatic relieving valve (58) is electrically connected to PLC controller (53) by solenoid valve (showing 56 in Fig. 2), and be not communicated with (having saved one-way valve (46)) between the control mouth (41) of pressure controlled valve (40) and the control mouth (23) of pressure controlled valve (24).
Preferably, described automatic relieving valve (21,58) is pneumatic 2/2-way valve, and its source of the gas is inert gas.
Preferably, described duplex pump device (4) is pair vane pump.
Preferably, also be provided with resuscitation apparatus (51) on fuel tank (5).
Preferably, the air vent (37) of pressure controlled valve (40) is connected on the pasta of fuel tank (5) by bleed valve (35).
Preferably, described pressure controlled valve (24,40) is regulated button with Manual pressure.
Preferably, the profile of described fuel tank (5) is rectangular structure.
Preferably, be provided with Butterworth Hatch and liquid level visor and liquid level sensor on described fuel tank.
Preferably, the oiler of selector valve (15) the place ahead is provided with on the air vent (37) of pressure gauge and pressure controlled valve (40) and is provided with pressure gauge.
The utility model adopts the two automatic relieving valves (21 of duplex pump device (4) band, 58) to the oil pocket (7 of cylinder, 8) pump oil, pump pond (31) is controlled separately according to the inlet pressure operating mode selector valve (11) pump oil mass selector valve pump oil mass and pump pond (33), greatly reduce power consumption, save gas station day-to-day operation cost, solved the simplex pump device large problem that radially takes up room simultaneously.
The accompanying drawing explanation:
Fig. 1 is with the structural representation of the CNG Filling Station of single automatic relieving valve (21) in prior art.
The structural representation that Fig. 2 is the CNG Filling Station with two automatic relieving valves (21,58) of the present utility model.
Embodiment
Below in conjunction with concrete mode of execution and Figure of description; the technical solution of the utility model is clearly and completely described; obviously; described embodiment is only the utility model part embodiment; rather than whole embodiment; it is intended to the purpose of example, is not intended to protection domain of the present utility model is carried out to any restriction.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment who obtains, and all belong to the scope of the utility model protection.
As shown in Figure 2, a kind of hydraulic piston type CNG Filling Station of low power consumption, mainly comprise selector valve group (3), hydraulic cylinder (2), duplex pump device (4), PLC controller (53), Manual relief valve (18, 48), automatic relieving valve (21, 58), fuel tank (5) (profile of preferred described fuel tank is rectangular structure), same as the prior art, duplex pump device (4) includes two the pump ponds (31 and 33) by same motor (34) driven pump oil shared oiler, two oil outlets (30 of duplex pump device (4), 36) by one-way valve (28) and one-way valve (43), with the oiler (15) of selector valve (11) in selector valve group (3), be communicated with respectively, be respectively arranged with pressure controlled valve (24) and pressure controlled valve (40) with four interfaces on oil circuit between oil circuit between one-way valve (28) and oiler (15) and one-way valve (43) and duplex pump device (4), improvements of the present invention have been to save the one-way valve (showing 46 in Fig. 1) in existing gas station, by two automatic relieving valves (21, 58) realize correspondingly function and control, specifically, the control mouth (41) of pressure controlled valve (40) is connected with automatic relieving valve (58), the instrument air port (59) of automatic relieving valve (58) is electrically connected to PLC controller (53) by solenoid valve (56), and be not communicated with (having saved one-way valve (46)) between the control mouth (41) of pressure controlled valve (40) and the control mouth (23) of pressure controlled valve (24).
In a mode of execution of the present utility model, automatic relieving valve (21,58) is pneumatic 2/2-way valve, and its source of the gas is inert gas, preferred nitrogen or pressurized air.
In a mode of execution of the present utility model, duplex pump device (4) for example can adopt the pair vane pump model of U.S. Parker company to be: T6CC0250173R00C111.
In addition, also be provided with resuscitation apparatus (51) on fuel tank, for the Butterworth Hatch that cleans bottom shells of gasoline tanks with for monitoring liquid level visor and the liquid level sensor that in fuel tank, liquid level is too low.
In another mode of execution of the present utility model, the air vent (37) of pressure controlled valve (40) is connected on the pasta of fuel tank (5) by bleed valve (35).
In a mode of execution more of the present utility model, described pressure controlled valve (24,40) is regulated button with Manual pressure.Pressure controlled valve (24) for example can use the pressure controlled valve of U.S. Parker company, and model is: R5V06-59312A125 and pressure controlled valve (40) for example can use the pressure controlled valve model of U.S. Parker company to be: R5U08-59515.
In a mode of execution more of the present utility model, described selector valve (11) (for example can use the selector valve model of U.S. Parker company to be: 4D063003030300B1) for three-position four-way valve.Pilot valve is that two position four-way valves (for example can be used the pilot valve model of Italian UOJD company to be: D3R1211Z3003).
In a mode of execution more of the present utility model, the oiler of selector valve (15) the place ahead is provided with on the air vent (37) of pressure gauge and pressure controlled valve (40) and is provided with pressure gauge.
Therefore because the entrance of cylinder compressed natural gas (1) pressure changes, reduce the required hydraulic flow of power consumption when improving compression efficiency and change; If all high capacity operations of (4) two pump ponds of duplex pump device, the overflow that (general gas inlet pressure is when 100bar is above) hydraulic oil can be a large amount of when cylinder gas inlet (1) pressure is higher, can increase like this motor (34) energy consumption, the heat exchange power consumption while having increased cold oil.Reduced the service life of driving machine simultaneously, and the service life of pressure controlled valve (24,40).
Use duplex pump hydraulic work system process as follows:
At first, the pressure of pressure controlled valve (40) is established to 60 to 65bar, then the pressure of pressure controlled valve (24) is established to 135bar.When inlet pressure high pressure 100bar, automatic relieving valve (21) is closed, and automatic relieving valve (58) is opened, and pump pond (31), to the cylinder acting, now the hydraulic oil of pump pond (33) is back to fuel tank (5).When by inlet pressure transducer (52), inlet pressure being detected lower than 100bar, automatic relieving valve (21) and automatic relieving valve (58) are all in closed condition, and two pump ponds (31 and 33) promote piston and the natural gas compressing in air cavity is done work to oil pocket (7 or 8) pump oil simultaneously by selector valve group (3).
Like this, can regulate easily the total discharge of duplex pump device (4), thereby the compressed natural gas of different inlet pressures (be limited to 20bar under inlet pressure, above be limited to 200bar) is realized to reasonably compression.
According to compressor model and hour compression tolerance, and consider operation cost and benefit.Different hours compression tolerance, supporting corresponding hour flow duplex pump as follows:
Preferably, compressor adopts air displacement at 200～1600Nm
3in the time of between/h (standard cubic meter per hour), the duplex pump of duplex pump device should adopt the duplex pump of Theoretical flowing capacity at 206L/min (Liter Per Minute);
Preferably, compressor adopts air displacement at 400～3200Nm
3in the time of between/h (standard cubic meter per hour), the duplex pump of duplex pump device should adopt the duplex pump of Theoretical flowing capacity at 404L/min (Liter Per Minute).
Pressure by the duplex pump device is controlled, and compressed natural gas is carried out to supercharging, reaches the purpose of the power consumption that effectively reduces compressed natural gas.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (9)
1. a hydraulic piston type CNG Filling Station, mainly comprise selector valve group (3), hydraulic cylinder (2), duplex pump device (4), PLC controller (53), Manual relief valve (18, 48), automatic relieving valve (21, 58), fuel tank (5), duplex pump device (4) includes two pump ponds (31 by same motor (34) driven pump oil shared oiler (32), 33), two oil outlets (30 of duplex pump device, 36) by one-way valve a (28) and one-way valve b (43), with the oiler (15) of selector valve in the selector valve group, be communicated with respectively, be respectively arranged with pressure controlled valve a (24) and the pressure controlled valve b (40) with four interfaces on oil circuit between one-way valve a (28) and oiler (15) and the oil circuit between one-way valve b (43) and duplex pump, it is characterized in that, the control mouth (41) of pressure controlled valve b (40) is connected with automatic relieving valve (58), the instrument air port (59) of automatic relieving valve (58) is electrically connected to PLC controller (53) by solenoid valve (56), and be not communicated with between the control mouth (41) of pressure controlled valve b (40) and the control mouth (23) of pressure controlled valve a (24).
2. hydraulic piston type CNG Filling Station according to claim 1, is characterized in that, described automatic relieving valve (21,58) is pneumatic 2/2-way valve, and its source of the gas is inert gas.
3. hydraulic piston type CNG Filling Station according to claim 1, is characterized in that, described duplex pump device (4) is pair vane pump.
4. according to the described hydraulic piston type CNG Filling Station of claim 1-3 any one, it is characterized in that, also be provided with resuscitation apparatus (51) on fuel tank (5).
5. according to the described hydraulic piston type CNG Filling Station of claim 1-3 any one, it is characterized in that, the air vent (37) of pressure controlled valve b (40) is connected on the pasta of fuel tank by bleed valve (35).
6. according to the described hydraulic piston type CNG Filling Station of claim 1-3 any one, it is characterized in that, described pressure controlled valve a, b (24,40) regulate button with Manual pressure.
7. according to the described hydraulic piston type CNG Filling Station of claim 1-3 any one, it is characterized in that, the profile of described fuel tank (5) is rectangular structure.
8. according to the described hydraulic piston type CNG Filling Station of claim 1-3 any one, it is characterized in that, be provided with Butterworth Hatch and liquid level visor and liquid level sensor on described fuel tank.
9. according to the described hydraulic piston type CNG Filling Station of claim 1-3 any one, it is characterized in that, oiler (15) the place ahead of selector valve (11) is provided with on the air vent (37) of pressure gauge and pressure controlled valve b (40) and is provided with pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110737 CN203363657U (en) | 2013-03-12 | 2013-03-12 | Hydraulic piston type CNG (compressed natural gas) charging station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110737 CN203363657U (en) | 2013-03-12 | 2013-03-12 | Hydraulic piston type CNG (compressed natural gas) charging station |
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| CN203363657U true CN203363657U (en) | 2013-12-25 |
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| CN 201320110737 Expired - Lifetime CN203363657U (en) | 2013-03-12 | 2013-03-12 | Hydraulic piston type CNG (compressed natural gas) charging station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901145A (en) * | 2021-03-19 | 2021-06-04 | 大庆油田有限责任公司 | Volume energy method for analyzing injection-production relation between oil-water wells |
-
2013
- 2013-03-12 CN CN 201320110737 patent/CN203363657U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901145A (en) * | 2021-03-19 | 2021-06-04 | 大庆油田有限责任公司 | Volume energy method for analyzing injection-production relation between oil-water wells |
| CN112901145B (en) * | 2021-03-19 | 2022-04-26 | 大庆油田有限责任公司 | Volume energy method for analyzing injection-production relation between oil-water wells |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING PROVA ENERGY CO., LTD. Free format text: FORMER NAME: BEIJING PROVA ENERGY TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 101102, Beijing, Zhongguancun Tongzhou District science and Technology Park, Tongzhou Park Jinqiao technology industry base, King Sheng, four South Street, No. 15, 37B Patentee after: BEIJING PROVA ENERGY HOLDING Co.,Ltd. Address before: 101102, Beijing, Zhongguancun Tongzhou District science and Technology Park, Tongzhou Park Jinqiao technology industry base, King Sheng, four South Street, No. 15, 37B Patentee before: BEIJING PROVA ENERGY DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
|
| CX01 | Expiry of patent term |