CN203615080U - Pipeline leakage detection device of gas vehicle system - Google Patents
Pipeline leakage detection device of gas vehicle system Download PDFInfo
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- CN203615080U CN203615080U CN201320797170.8U CN201320797170U CN203615080U CN 203615080 U CN203615080 U CN 203615080U CN 201320797170 U CN201320797170 U CN 201320797170U CN 203615080 U CN203615080 U CN 203615080U
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- Prior art keywords
- pressure
- outlet end
- pressure pipe
- pipeline
- vehicle system
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- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 239000002737 fuel gas Substances 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 150000002829 nitrogen Chemical class 0.000 claims description 6
- 239000003949 liquefied natural gas Substances 0.000 description 19
- 238000007906 compression Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 206010025482 Malaise Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
Abstract
The utility model discloses a pipeline leakage detection device of a gas vehicle system. The outlet end of an air compressor 1 is connected with an inlet of a sequence control disc 2, an outlet of the sequence control disc 2 is connected with an inlet of a leakage detection console 3, a high-pressure pipe, a medium-pressure pipe and a low-pressure pipe of the leakage detection console 3 are respectively provided with a one-way valve 4 and a control ball valve 5, the inlet end of the high-pressure pipe, the inlet end of the medium-pressure pipe and the inlet end of the low-pressure pipe are connected with three pressure outlets of the sequence control disc 2 respectively, the outlet end of the high-pressure pipe and the outlet end of the medium-pressure pipe are connected together in parallel and then connected with a CNG filling gun 7 through a first pressure sensor 6, and the outlet end of the low-pressure pipe is connected with a gas filling port 9a of an LNG filling base 9 through a second pressure sensor 8. The pipeline leakage detection device detects a gas vehicle by the utilization of a semi-automatic operating line, effectively improves the detection efficiency, and meanwhile has the advantages of saving energy, being safe to operate and the like.
Description
Technical field
The utility model relates to the detection device of a kind of LNG vehicle and CNG Vehicular system pipeline leakage situation.
Background technique
Fuel gas vehicle comprises CNG automobile and LNG automobile, CNG automobile refers to using compressed natural gas and substitutes regular price gasoline or the diesel oil automobile as automotive fuel, LNG automobile is the abbreviation of LNGV (liquefied natural gas vehicle), LNG and CNG have been employed many years in automotive fuel field, the market demand of fuel gas vehicle is also very huge.Fuel gas vehicle is can not only metric density large, and automobile continual mileage is long, and automobile uses diesel oil, gasoline to have significant economic benefit relatively, and very environmental protection.Fuel gas vehicle is before formally dispatching from the factory, need carry out leaks detection to gas supply pipe system in vehicle, at present mostly be manually to use gas cylinder to carry out gas filling to vehicle pipeline, in the time that filling weight meets the demands, stop filling and observe pipeline and carry the pressure drop situation of pressure-display device.If within a period of time, pressure does not decline or drop-out value meets regulation requirement, and vehicle pipeline leakage characteristic conforms related request is described.Thisly manually fill with detecting method efficiency very lowly, be unwell to the operation in enormous quantities of production line formula, need improve.
Model utility content
Technical problem to be solved in the utility model is to provide the automation fuel gas vehicle system pipeline property revealed that a kind of efficiency is higher detection device.
The technical solution of the utility model is as follows: a kind of fuel gas vehicle system pipeline leak detecting device, comprise air compressor (1), the outlet end of described air compressor (1) is connected with the import of sequence control dish (2), this sequence control dish (2) has three pressure exports, and three pressure exports of this sequence control dish (2) are connected with three entrances of Leak testtion operating console (3) respectively, this Leak testtion operating console (3) comprises pressure duct, middle pressure pipe road and low pressure line, pressure duct, on middle pressure pipe road and low pressure line, be provided with one-way valve (4) and control ball valve (5), the entry end of described pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line are connected with three pressure exports of sequence control dish (2) respectively, the outlet end on the outlet end of this pressure duct and middle pressure pipe road is connected in parallel, after in parallel, be connected with CNG air filling gun (7) by the first pressure transducer (6), the outlet end of this low pressure line is connected with the aerating interface (9a) of LNG aerating seat (9) by the second pressure transducer (8).
While adopting said apparatus to detect fuel gas vehicle system pipeline leaks, start air compressor, air after air compressor compression is output as high pressure, middle pressure and low pressure through sequence control dish, high-pressure air is passed in pressure duct, middle pressure air is passed in middle pressure pipe road, and low-pressure air is passed in low pressure line.When CNG vehicle is detected, first open the control ball valve arranging on middle pressure pipe road, pressure air is entered in fuel gas vehicle through the aerating interface of one-way valve and CNG aerating seat, fill while requiring when reaching, system alert has filled, artificial delay certain hour closing control ball valve, system starts leaks and detects, and in the time reaching time requirement, checks whether system pressure drop meets leaks requirement, if do not meet, carry out vehicle inspection; If met, the control ball valve of opening on pressure duct fills vehicle, fills while requiring when reaching, and system alert has filled, artificial delay certain hour closing control ball valve, system starts leaks and detects, and in the time reaching time requirement, checks whether system pressure drop meets leaks requirement, if do not met, carry out vehicle inspection, if met, the CNG Vehicular system pipeline property revealed has detected.In the time that LNG vehicle is detected, the control ball valve of opening on low pressure line fills LNG vehicle.
Three pressure export end Jun Youliangtiao branches of described sequence control dish (2), one is connected with the entry end of pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line respectively, and another is connected with respectively high-pressure gas cylinder (13), middle pressure air cylinder (14) and low pressure air cylinder (15).When each use, all use air compressor fuel gas vehicle directly to be filled to the loss of not only wasting electric energy but also can aggravate air compressor, in parallel connection after air cylinder, first utilize air compressor after air pressurized, to be filled into respectively in the different caissons that require by order controller, in the time having vehicle need to carry out leaks detection, by the pressurized air in gas cylinder, vehicle is filled, air compressor compression fills air cylinder once, air cylinder can repeatedly fill vehicle, has saved the energy and has reduced the loss of air compressor.
The outlet end of described pressure duct is divided into two, and one is in parallel with the outlet end on middle pressure pipe road, and another is connected with middle pressure air cylinder (14) by backflow ball valve (12).After adopting pressure duct to fill vehicle, the high-pressure air existing in the pipeline between pressure duct and CNG air filling gun is filled into middle pressure air cylinder by backflow ball valve, has not only better protected pipeline, has saved the energy simultaneously.
Described fuel gas vehicle system pipeline leak detecting device also comprises compressed nitrogen gas cylinder (10), the outlet end of this compressed nitrogen gas cylinder (10) is connected with the entry end of nitrogen pipeline, this nitrogen pipeline comprises one-way valve (4) and controls ball valve (5), and the outlet end of this nitrogen pipeline is connected with the aerating interface (9a) of LNG air filling gun (9).Because LNG vehicle is higher to pressurized air purity requirement, therefore also can use compressed nitrogen to fill LNG vehicle simultaneously, reduce the impact on LNG vehicle because be mingled with too many impurity in LNG vehicle pipeline.
Because LNG air filling gun can only be connected with low pressure line with pressure duct, middle pressure pipe road by flexible pipe with CNG air filling gun, be long-term stored in flexible pipe flexible pipe is caused to wearing and tearing for fear of pressurized gas, after the outlet end parallel connection on described pressure duct and middle pressure pipe road, be divided into two, one is connected with CNG air filling gun (7), another is connected with atmosphere by diffusing pipeline, and this diffuses on pipeline and is provided with and diffuses main valve (11); The return-air interface (9b) of described LNG air filling gun (9) is connected with atmosphere by diffusing pipeline, and this diffuses and on pipeline, is provided with return air valve (16).After detecting, open and diffuse valve or return air valve can, by emptying the pressurized air in flexible pipe, have been protected flexible pipe.
For the inlet pressure of better detection of leaks testing console, the entry end of described pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line are connected with respectively pressure gauge (12).
The outlet end of described sequence control dish (2) is parallel with at least two leak detection operating consoles (3), more enough many vehicles is detected simultaneously, has further improved efficiency.
Beneficial effect: the utility model adopts semi-automatic working pair fuel gas vehicle to detect, and in effectively having improved detection efficiency, also has the feature such as energy saving, handling safety.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises air compressor 1, sequence control dish 2, Leak testtion operating console 3, one-way valve 4, control ball valve 5, the first pressure transducer 6, CNG air filling gun 7, the second pressure transducer 8, LNG aerating seat 9, compressed nitrogen gas cylinder 10, diffuse main valve 11, backflow ball valve 12, high-pressure gas cylinder 13, middle pressure air cylinder 14, the parts such as low pressure air cylinder 15 and return air valve 16, the outlet end of described air compressor 1 is connected with the import of sequence control dish 2, the outlet end of this sequence control dish 2 is parallel with at least two leak detection operating consoles 3, preferred two in parallel in the present embodiment.Described sequence control dish 2 has three pressure exports, three pressure export end Jun Youliangtiao branches of this sequence control dish 2, one is connected with three entrances of Leak testtion operating console 3 respectively, and another is connected with respectively high-pressure gas cylinder 13, middle pressure air cylinder 14 and low pressure air cylinder 15.Described Leak testtion operating console 3 comprises pressure duct, middle pressure pipe road and low pressure line, pressure duct, on middle pressure pipe road and low pressure line, be provided with one-way valve 4 and control ball valve 5, the entry end of described pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line are connected with three pressure exports of sequence control dish 2 respectively, the entry end of this pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line are connected with respectively pressure gauge 12, the outlet end of this pressure duct is divided into two, one is in parallel with the outlet end on middle pressure pipe road, after in parallel, be connected with CNG air filling gun 7 by the first pressure transducer 6, another is connected with middle pressure air cylinder 14 by backflow ball valve 12.The outlet end of described low pressure line is connected with the aerating interface 9a of LNG aerating seat 9 by the second pressure transducer 8.
As shown in Figure 1, described fuel gas vehicle system pipeline leak detecting device also comprises compressed nitrogen gas cylinder 10, the outlet end of this compressed nitrogen gas cylinder 10 is connected with the entry end of nitrogen pipeline, this nitrogen pipeline comprises one-way valve 4 and controls ball valve 5, and the outlet end of this nitrogen pipeline is connected with the aerating interface 9a of LNG air filling gun 9.
From Fig. 1 further, after the outlet end parallel connection on described pressure duct and middle pressure pipe road, be divided into two, one is connected with CNG air filling gun 7, and another is connected with the inlet end that diffuses pipeline by diffusing main valve 11, and this exhaust of diffusing pipeline is emptying; The return-air interface 9b of described LNG air filling gun 9 is connected with the inlet end that diffuses pipeline by return air valve 16.
The foregoing is only preferred embodiment of the present utility model; not take the utility model as restriction; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a fuel gas vehicle system pipeline leak detecting device, it is characterized in that: comprise air compressor (1), the outlet end of described air compressor (1) is connected with the import of sequence control dish (2), this sequence control dish (2) has three pressure exports, and three pressure exports of this sequence control dish (2) are connected with three entrances of Leak testtion operating console (3) respectively, this Leak testtion operating console (3) comprises pressure duct, middle pressure pipe road and low pressure line, pressure duct, on middle pressure pipe road and low pressure line, be provided with one-way valve (4) and control ball valve (5), the entry end of described pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line are connected with three pressure exports of sequence control dish (2) respectively, the outlet end on the outlet end of this pressure duct and middle pressure pipe road is connected in parallel, after in parallel, be connected with CNG air filling gun (7) by the first pressure transducer (6), the outlet end of this low pressure line is connected with the aerating interface (9a) of LNG aerating seat (9) by the second pressure transducer (8).
2. fuel gas vehicle system pipeline leak detecting device according to claim 1, it is characterized in that: three pressure export end Jun Youliangtiao branches of described sequence control dish (2), one is connected with the entry end of pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line respectively, and another is connected with respectively high-pressure gas cylinder (13), middle pressure air cylinder (14) and low pressure air cylinder (15).
3. fuel gas vehicle system pipeline leak detecting device according to claim 2, it is characterized in that: the outlet end of described pressure duct is divided into two, one is in parallel with the outlet end on middle pressure pipe road, and another is connected with middle pressure air cylinder (14) by backflow ball valve (12).
4. fuel gas vehicle system pipeline leak detecting device according to claim 1, it is characterized in that: described fuel gas vehicle system pipeline leak detecting device also comprises compressed nitrogen gas cylinder (10), the outlet end of this compressed nitrogen gas cylinder (10) is connected with the entry end of nitrogen pipeline, this nitrogen pipeline comprises one-way valve (4) and controls ball valve (5), and the outlet end of this nitrogen pipeline is connected with the aerating interface (9a) of LNG air filling gun (9).
5. fuel gas vehicle system pipeline leak detecting device according to claim 1, it is characterized in that: after the outlet end parallel connection on described pressure duct and middle pressure pipe road, be divided into two, one is connected with CNG air filling gun (7), another is connected with atmosphere by diffusing pipeline, and this diffuses on pipeline and is provided with and diffuses main valve (11); The return-air interface (9b) of described LNG air filling gun (9) is connected with atmosphere by diffusing pipeline, and this diffuses and on pipeline, is provided with return air valve (16).
6. fuel gas vehicle system pipeline leak detecting device according to claim 1, is characterized in that: the entry end of described pressure duct, the entry end on middle pressure pipe road and the entry end of low pressure line are connected with respectively pressure gauge (12).
7. fuel gas vehicle system pipeline leak detecting device according to claim 1, is characterized in that: the outlet end of described sequence control dish (2) is parallel with at least two leak detection operating consoles (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320797170.8U CN203615080U (en) | 2013-12-03 | 2013-12-03 | Pipeline leakage detection device of gas vehicle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320797170.8U CN203615080U (en) | 2013-12-03 | 2013-12-03 | Pipeline leakage detection device of gas vehicle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615080U true CN203615080U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320797170.8U Expired - Fee Related CN203615080U (en) | 2013-12-03 | 2013-12-03 | Pipeline leakage detection device of gas vehicle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203615080U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989949A (en) * | 2015-08-06 | 2015-10-21 | 上海雷尼威尔技术有限公司 | LNG leakage monitoring method, system and device |
| CN105179936A (en) * | 2015-08-26 | 2015-12-23 | 上海雷尼威尔技术有限公司 | Canning protection method |
| CN107327698A (en) * | 2017-06-25 | 2017-11-07 | 广州从化中燃城市燃气发展有限公司 | The recanalization method of LNG storage tank |
| CN108278494A (en) * | 2017-12-26 | 2018-07-13 | 中车唐山机车车辆有限公司 | Rail vehicle air pipe system leak hunting method |
-
2013
- 2013-12-03 CN CN201320797170.8U patent/CN203615080U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989949A (en) * | 2015-08-06 | 2015-10-21 | 上海雷尼威尔技术有限公司 | LNG leakage monitoring method, system and device |
| CN104989949B (en) * | 2015-08-06 | 2017-06-06 | 上海雷尼威尔技术有限公司 | A kind of LNG leakage monitorings method system and device |
| CN105179936A (en) * | 2015-08-26 | 2015-12-23 | 上海雷尼威尔技术有限公司 | Canning protection method |
| CN107327698A (en) * | 2017-06-25 | 2017-11-07 | 广州从化中燃城市燃气发展有限公司 | The recanalization method of LNG storage tank |
| CN108278494A (en) * | 2017-12-26 | 2018-07-13 | 中车唐山机车车辆有限公司 | Rail vehicle air pipe system leak hunting method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20211203 |