CN203836582U - Compressed natural gas air-entrapping system - Google Patents
Compressed natural gas air-entrapping system Download PDFInfo
- Publication number
- CN203836582U CN203836582U CN201320851245.6U CN201320851245U CN203836582U CN 203836582 U CN203836582 U CN 203836582U CN 201320851245 U CN201320851245 U CN 201320851245U CN 203836582 U CN203836582 U CN 203836582U
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- China
- Prior art keywords
- natural gas
- compressed natural
- liquid level
- probe
- surge flask
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Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 239000003345 natural gas Substances 0.000 title claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 239000007789 gas Substances 0.000 claims abstract description 60
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 53
- 239000003921 oil Substances 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 239000000523 sample Substances 0.000 claims description 51
- 239000000446 fuel Substances 0.000 claims description 28
- 239000004519 grease Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The utility model discloses a compressed natural gas air-entrapping system, comprising a gas cylinder, an oil storage device, a gas dispenser and a buffer bottle, wherein at least one gas cylinder is arranged and used for storing a compressed natural gas; the oil storage device is communicated with the gas bottle, and used for providing hydraulic oil to the gas cylinder and recovering the hydraulic oil; the gas dispenser is communicated with the gas bottle and used for receiving the compressed natural gas in the gas bottle to entrap a natural gas vehicle; the buffer bottle is arranged between the gas cylinder and the gas dispenser; a liquid level detection device is arranged on the buffer bottle. According to the compressed natural gas air-entrapping system disclosed by the utility model, the liquid level inside the buffer bottle is detected by virtue of the liquid level detection device on the buffer bottle; a signal is transmitted to the control device while the control device finishes the exhaust process when the liquid level achieves the preset monitoring point, so that the hydraulic oil cannot enter the gas dispenser along with the compressed natural gas, and the damage to an engine due to the fact that the hydraulic oil enters the natural gas vehicle is effectively avoided.
Description
Technical field
The utility model relates to compressed natural gas applied technical field, relates in particular to a kind of compressed natural gas filling system.
Background technique
Rock gas has been used as fuel for motor vehicle more and more as a kind of clean energy resource, and for example, compressed natural gas (CNG) is exactly a kind of common gas fuel.For the compressed natural gas of annotating to automobile with compressed natural gas, compressed natural gas filling system has been born.
Fig. 1 shows a kind of existing compressed natural gas filling system, mainly comprise the gas cylinder 1 of multiple storage compressed natural gass, the Fuel Tanking Unit 2 of storage liquid force feed, is provided with differential pressure switch 3 on Fuel Tanking Unit 2, surge flask 4 and filling machine 5, whole system is controlled by unified coordination of control gear.In the time that needs are annotated compressed natural gas, the hydraulic oil in control system control Fuel Tanking Unit 2 injects at least one gas cylinder 1, and the compressed natural gas in gas cylinder 1 is expelled to surge flask 4 by the road, then flows to filling machine 5 by surge flask 4.In the time of needs oil return, the hydraulic oil in gas cylinder 1 flows back to Fuel Tanking Unit 2 under the pressure of residual compression rock gas, and differential pressure switch 3 is responsible for judgement and when is stopped oil return.
The problem that above-mentioned existing compressed natural gas filling system exists is, in the time that the phenomenon of leakage of oil appears in the element in oil circuit, likely can retain hydraulic oil in gas cylinder 1.So in the time again carrying out aerating, the hydraulic oil remaining in gas cylinder 1 just likely can be discharged in filling machine 5, thereby causes the compressed natural gas that injects gas-fueled vehicles doped with hydraulic oil, and the motor of gas-fueled vehicles is caused damage.
Therefore, need a kind of compressed natural gas filling system, to solve at least in part problems of the prior art.
Model utility content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of compressed natural gas filling system, comprising: gas cylinder, and described gas cylinder is at least one, for storing compressed natural gas; Fuel Tanking Unit, described Fuel Tanking Unit is communicated with described gas cylinder, for hydraulic oil being provided and reclaiming hydraulic oil to described gas cylinder; Filling machine, described filling machine is communicated with described gas cylinder, is natural gas vehicle refueling for receiving the compressed natural gas of described gas cylinder; Surge flask, described surge flask is arranged between described gas cylinder and described filling machine, on described surge flask, liquid level detection device is installed.
Preferably, described liquid level detection device is arranged on the position on the lower, middle part of the outer surface of described surge flask.
Preferably, the bottom of described surge flask is provided with suction tude, and described suction tude is in described surge flask is stretched in the bottom of described surge flask, and described liquid level detection device is positioned at the mouth of pipe of described surge flask lower than described suction tude.
Preferably, described liquid level detection device comprises: the first probe, position on the lower, the middle part of the outer surface that described first pops one's head in is connected to described surge flask; The second probe, described the second probe is arranged side by side with interval with described the first probe; Transmitter, described transmitter is arranged on described the first probe or described the second probe.
Preferably, the central angle between described the first probe and described the second probe is less than 90 °.
Preferably, described the first probe and described the second probe are ultrasonic probe.
Preferably, between described the first probe and described the second probe and the outer surface of described surge flask, be provided with silicone grease coating.
Preferably, on described Fuel Tanking Unit, be provided with level meter, top at described level meter is provided with the highest liquid level sensor, is provided with minimum liquid level sensor in described level meter bottom, between the highest described liquid level sensor and described minimum liquid level sensor, is provided with oil return liquid level sensor.
According to compressed natural gas filling system of the present utility model, detect the liquid level in surge flask by the liquid level detection device being arranged on surge flask, in the time that liquid level reaches default monitoring point, send signal and finish exhaust process by control gear to control gear, hydraulic oil cannot be entered in filling machine with compressed natural gas, effectively avoided entering because of hydraulic oil the infringement that gas-fueled vehicles bring to motor.
In model utility content part, introduced the concept of a series of reduced forms, this will further describe in embodiment part.The utility model content part does not also mean that key feature and the essential features that will attempt to limit technological scheme required for protection, does not more mean that the protection domain of attempting to determine technological scheme required for protection.
Below in conjunction with accompanying drawing, describe advantage of the present utility model and feature in detail.
Brief description of the drawings
Following accompanying drawing of the present utility model is used for understanding the utility model in this as a part of the present utility model.Shown in the drawings of mode of execution of the present utility model and description thereof, be used for explaining principle of the present utility model.In the accompanying drawings,
Fig. 1 is according to the formation schematic diagram of the compressed natural gas filling system of a kind of mode of execution in prior art;
Fig. 2 is according to the formation schematic diagram of the compressed natural gas filling system of a kind of mode of execution of the utility model;
Fig. 3 is according to the structural representation of the surge flask of a kind of mode of execution of the utility model;
Fig. 4 is the internal structure schematic diagram of the surge flask shown in Fig. 3;
Fig. 5 is the first probe and the position distribution schematic diagram of the second probe on surge flask.
Embodiment
In the following description, having provided a large amount of concrete details understands the utility model more thoroughly to provide.But, it will be apparent to one skilled in the art that the utility model can be implemented without one or more these details.In other example, for fear of obscuring with the utility model, be not described for technical characteristicss more well known in the art.
In order thoroughly to understand the utility model, will detailed structure be proposed in following description.Obviously, execution of the present utility model is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present utility model is described in detail as follows, but except these are described in detail, the utility model can also have other mode of executions.
The utility model discloses a kind of compressed natural gas filling system, its structure as shown in Figure 2, mainly comprises gas cylinder 10, Fuel Tanking Unit 30, filling machine 50 and surge flask 70, and the operation of whole system is coordinated to control by control gear.
Gas cylinder 10, for storing compressed natural gas, at least needs one.For example, can use 8 gas cylinders 10, and be two groups according to 4 components.
In Fuel Tanking Unit 30, deposited hydraulic oil, for when gas cylinder 10 exhaust to the interior injection liquid force feed of gas cylinder 10, and after exhaust finishes, reclaim hydraulic oil.In order to show the oil mass in Fuel Tanking Unit 30, on Fuel Tanking Unit 30, can be provided with level meter 31.Preferably, three gear monitoring liquid levels can be set on level meter 31, every gear detects liquid level and is responsible for monitoring by liquid level sensor, and monitoring result is sent to control gear, and control gear takes appropriate measures according to testing result.Top at level meter 31 is provided with the highest liquid level sensor, and in the time that the liquid level in Fuel Tanking Unit 30 arrives herein, the highest liquid level sensor can send signal to control gear, and control gear can do the too much alarm of oil pump capacity.Be provided with minimum liquid level sensor in the bottom of level meter 31, in the time that the liquid level in Fuel Tanking Unit 30 arrives herein, minimum liquid level sensor can send signal to control gear, is made and is lacked fluid or to the too much alarm of gas cylinder 10 oilings by control gear.By being set, the highest liquid level sensor and minimum liquid level sensor can make to be injected into hydraulic oil in gas cylinder 10 in a suitable scope.Between the highest liquid level sensor and minimum liquid level sensor, be provided with oil return liquid level sensor, in the time that the liquid level in Fuel Tanking Unit 30 arrives herein, oil return liquid level sensor can send signal to control gear, control gear can be controlled at least one gas cylinder 10 and stop exhaust, so that hydraulic oil is got back in Fuel Tanking Unit 30.In addition, if oil return liquid level sensor breaks down, can be responsible for sending signal to control gear by minimum liquid level sensor.So in the time that oil return liquid level sensor is set, can be by oil return liquid level sensor near minimum liquid level sensor setting, to lack hydraulic pressure oil condition in time in control gear reflection Fuel Tanking Unit 30.
The flow direction of hydraulic oil can be controlled by the hydraulic oil reversing arrangement 60 in Fig. 2, and this hydraulic oil reversing arrangement 60 for example can be made up of the multiple selector valves shown in Fig. 2.Mention above and multiple gas cylinders 10 can be divided into groups, so multiple selector valves of composition hydraulic oil reversing arrangement 60 also can correspondingly divide into groups, and control to realize targetedly.
Fig. 2 exemplarily illustrates multiple gas cylinders 10 is divided into two groups, and hydraulic oil reversing arrangement 60 comprises 4 selector valves, and these 4 selector valves are also correspondingly divided into two groups.In the time only needing a gas cylinder group exhaust, oil pump 20 starts, and the hydraulic oil in Fuel Tanking Unit 30 is extracted out, and hydraulic oil flows to oil circuit joint 81 through the first selector valve 61, and hydraulic oil flows through after oil circuit joint 81 just and can carry to each gas cylinder 10 in this gas cylinder group.As can be seen from Figure 2, the upstream end of each gas cylinder 10 is provided with fuel tap 83, and fuel tap 83 is opened rear hydraulic oil will flow into gas cylinder 10.Meanwhile, the air valve 85 of these gas cylinder 10 downstream parts also can be opened, and can discharge so that hydraulic oil flows into the rear compressed natural gas of gas cylinder 10.Compressed natural gas can pass through gas path joint 87 and surge flask 70 successively after discharging and flow to filling machine 50, and filling machine 50 can carry out aerating after receiving compressed natural gas.In the time of oil return, for example, while also remaining 5% compressed natural gas in gas cylinder 10, hydraulic oil reversing arrangement 60 commutates, oil pump 20 zero loads, hydraulic oil will reflux to Fuel Tanking Unit 30 under the pressure of remaining compressed natural gas in gas cylinder 10, and hydraulic oil flows to hydraulic oil reversing arrangement 60 through oil circuit joint 81.Now the second selector valve 65 and the 3rd selector valve 63 are all opened, and make hydraulic oil be flowed back to Fuel Tanking Unit 30.After certain hour, another group gas cylinder 10 is carried out to oiling.In like manner, another gas cylinder group can be imported hydraulic oil by the 3rd selector valve 63 in the time of exhaust, and in the time of oil return, hydraulic oil flows back to Fuel Tanking Unit 30 through the 4th selector valve 67.
Mention compressed natural gas in the time of gas cylinder 10 exhaust above and can first arrive filling machine 50 through surge flask 70 again, this surge flask 70 is arranged between gas cylinder 10 and filling machine 50.For example, due in the time there is oil leakage phenomenon in the oil circuit of compressed natural gas filling system (leakage of oil appears in fuel tap 83), in gas cylinder 10, may accumulate a certain amount of hydraulic oil, if this part hydraulic oil, along with compressed natural gas is together injected into gas-fueled vehicles, will cause damage to the motor of gas-fueled vehicles.In order to prevent that hydraulic oil from entering gas-fueled vehicles with compressed natural gas, liquid level detection device 90 need to be installed on surge flask 70, the mounting point of liquid level detection device 90 on surge flask 70 is the default monitoring point of surge flask 70.In the time that liquid level arrives default monitoring point, liquid level detection device 90 can send signal to control gear, control gear receives from stopping exhaust process after the signal of liquid level detection device 90, and sends warning, by operator by emptying the hydraulic oil in surge flask 70.
According to compressed natural gas filling system of the present utility model, detect the liquid level in surge flask by the liquid level detection device being arranged on surge flask, in the time that liquid level reaches default monitoring point, send signal and finish exhaust process by control gear to control gear, hydraulic oil cannot be entered in filling machine with compressed natural gas, effectively avoided entering because of hydraulic oil the infringement that gas-fueled vehicles bring to motor.
Preferably, as shown in Figure 3, liquid level detection device 90 can be arranged on to the position on the lower, middle part of the outer surface of surge flask 70, the default monitoring point of surge flask 70 is also positioned at the position on the lower, middle part of the outer surface of surge flask 70.Like this, when the oil mass in surge flask 70, also just alert is emptying by hydraulic oil in time in time seldom time, avoids accumulating in surge flask 70 too much hydraulic oil.
With reference to the internal structure of the surge flask 70 shown in Fig. 4, can find out, surge flask 70 has and stretches into inner suction tude 71 from bottom, and the mouth of pipe that compressed natural gas is arranged in surge flask 70 via this suction tude 71 enters surge flask 70.This mouth of pipe can be arranged on the through hole on suction tude 71 sidewalls, and compressed natural gas enters in surge flask 70 via this through hole along continuous straight runs.Because compressed natural gas in the process of gas cylinder 10 exhausts can contact with hydraulic oil, so the compressed natural gas entering in surge flask 70 can carry a small amount of hydraulic oil.When the compressed natural gas that carries a small amount of hydraulic oil is entered after surge flask 70 by the mouth of pipe of suction tude 71, because the density of hydraulic oil is greater than the density of compressed natural gas, so hydraulic oil can accumulate in the bottom of surge flask 70, compressed natural gas flows to filling machine via the top of surge flask 70.Between surge flask 70 and filling machine, the parts such as safety valve, filter and pneumatic valve can be set.
Therefore, further preferably, in the time that the outer surface of surge flask 70 is installed liquid level detection device 90, can make liquid level detection device 90 be positioned at the mouth of pipe of surge flask 70 lower than suction tude 71, so that liquid level detection device 90 more approaches the hydraulic oil of surge flask 70 bottoms, thereby grasp in time the level condition of surge flask 70 interior hydraulic oil.
Get back to Fig. 3, the utility model one preferred embodiment in, liquid level detection device 90 can comprise the first probe 91, the second probe 93 and transmitter 95.Wherein, the first probe 91 and the second probe 93 are connected to the position (being the position of the default monitoring point of surge flask 70) on the lower, middle part of the outer surface of surge flask 70 with interval side by side, for example, make the two be adsorbed on the default monitoring point of surge flask 70 outer surfaces by sucker being set on the first probe 91 and the second probe 93.These two visit first as transmitting terminal another as receiving terminal, when surge flask 70 inner fluid faces during lower than default monitoring point receiving terminal can receive signal, when surge flask 70 inner fluid faces during higher than default monitoring point receiving terminal do not receive signal, judge with this whether surge flask 70 inner fluid faces, whether higher than default monitoring point, need to send termination exhaust signal.Transmitter 95 is arranged on the probe as receiving terminal, on in the first probe 91 and the second probe 93, by the signal of output change into can controlled device the signal of identification, and by wire transmission to control gear, provide foundation for whether control gear stops bleeding.
About the mode of execution of above-mentioned liquid level detection device 90, can also there is following several further preferred embodiment.
As shown in Figure 5, the first probe 91 and the second probe 93 are arranged on the outer surface of slow middle bottle 70, in order to obtain reliable monitoring effect, these two probes can be configured such that in the distribution of surge flask 70 outer surfaces (angle in Fig. 5 a) is less than 90 ° to two central angles between probe.
In order to ensure reliable monitoring result, preferably, the first probe 91 and the second probe 93 can adopt ultrasonic probe equally.Like this, even if the first probe 91 and the second probe 93 sidewalls across surge flask 70 also can be judged the liquid level in surge flask 70 exactly.
Further preferably, for ultrasound can effectively be detected through measured article effectively, can between the sensitive surface of the first probe 91 and the second probe 93 and the outer surface of surge flask 70, silicone grease coating be set, this silicone grease coating plays the effect of Couplant.Particularly, can in the sensitive surface of two probes, smear silicone grease and form silicone grease coating between the first probe 91 and the second probe sensitive surface of 93 and the outer surface of surge flask 70.
The liquid level detection device 90 of the present embodiment can also adopt liquid level sensor, or in order to detect other devices of the liquid level in surge flask 70, to judge whether finishing exhaust process, and send to control system to control exhaust signal, hydraulic oil cannot be entered in filling machine with compressed natural gas, effectively avoided entering because of hydraulic oil the infringement that gas-fueled vehicles bring to motor.
The utility model is illustrated by above-described embodiment, but should be understood that, above-described embodiment is the object for giving an example and illustrating just, but not is intended to the utility model to be limited in described scope of embodiments.In addition it will be understood by those skilled in the art that; the utility model is not limited to above-described embodiment; can also make more kinds of variants and modifications according to instruction of the present utility model, these variants and modifications all drop in the utility model scope required for protection.Protection domain of the present utility model is defined by the appended claims and equivalent scope thereof.
Claims (8)
1. a compressed natural gas filling system, is characterized in that, comprising:
Gas cylinder, described gas cylinder is at least one, for storing compressed natural gas;
Fuel Tanking Unit, described Fuel Tanking Unit is communicated with described gas cylinder, for hydraulic oil being provided and reclaiming hydraulic oil to described gas cylinder;
Filling machine, described filling machine is communicated with described gas cylinder, is natural gas vehicle refueling for receiving the compressed natural gas of described gas cylinder;
Surge flask, described surge flask is arranged between described gas cylinder and described filling machine, on described surge flask, liquid level detection device is installed.
2. according to compressed natural gas filling system claimed in claim 1, it is characterized in that, described liquid level detection device is arranged on the position on the lower, middle part of the outer surface of described surge flask.
3. according to compressed natural gas filling system claimed in claim 2, it is characterized in that, the bottom of described surge flask is provided with suction tude, and described suction tude is in described surge flask is stretched in the bottom of described surge flask, and described liquid level detection device is positioned at the mouth of pipe of described surge flask lower than described suction tude.
4. according to compressed natural gas filling system claimed in claim 1, it is characterized in that, described liquid level detection device comprises:
The first probe, position on the lower, the middle part of the outer surface that described first pops one's head in is connected to described surge flask;
The second probe, described the second probe is arranged side by side with interval with described the first probe;
Transmitter, described transmitter is arranged on described the first probe or described the second probe.
5. according to compressed natural gas filling system claimed in claim 4, it is characterized in that, the central angle between described the first probe and described the second probe is less than 90 °.
6. according to compressed natural gas filling system claimed in claim 4, it is characterized in that, described the first probe and described the second probe are ultrasonic probe.
7. according to compressed natural gas filling system claimed in claim 6, it is characterized in that, between described the first probe and described the second probe and the outer surface of described surge flask, be provided with silicone grease coating.
8. according to compressed natural gas filling system claimed in claim 1, it is characterized in that, on described Fuel Tanking Unit, be provided with level meter, top at described level meter is provided with the highest liquid level sensor, be provided with minimum liquid level sensor in described level meter bottom, between the highest described liquid level sensor and described minimum liquid level sensor, be provided with oil return liquid level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851245.6U CN203836582U (en) | 2013-12-23 | 2013-12-23 | Compressed natural gas air-entrapping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851245.6U CN203836582U (en) | 2013-12-23 | 2013-12-23 | Compressed natural gas air-entrapping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836582U true CN203836582U (en) | 2014-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320851245.6U Expired - Fee Related CN203836582U (en) | 2013-12-23 | 2013-12-23 | Compressed natural gas air-entrapping system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203836582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151868A (en) * | 2015-04-10 | 2016-11-23 | 安瑞科(廊坊)能源装备集成有限公司 | Fluid pressure type air entraining substation |
-
2013
- 2013-12-23 CN CN201320851245.6U patent/CN203836582U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151868A (en) * | 2015-04-10 | 2016-11-23 | 安瑞科(廊坊)能源装备集成有限公司 | Fluid pressure type air entraining substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20211223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |