CN106122762B - Device for detecting air leakage of hydraulic CNG (compressed natural gas) cylinder - Google Patents
Device for detecting air leakage of hydraulic CNG (compressed natural gas) cylinder Download PDFInfo
- Publication number
- CN106122762B CN106122762B CN201610599576.3A CN201610599576A CN106122762B CN 106122762 B CN106122762 B CN 106122762B CN 201610599576 A CN201610599576 A CN 201610599576A CN 106122762 B CN106122762 B CN 106122762B
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- China
- Prior art keywords
- detecting
- side fixing
- water tank
- frame
- cylinder
- Prior art date
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title description 33
- 239000003345 natural gas Substances 0.000 title description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 30
- 238000012360 testing method Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a device for detecting air leakage of a hydraulic CNG air bottle, which belongs to the technical field of energy equipment and comprises a water tank, wherein a bracket is arranged above the water tank, a driving mechanism is arranged at the top of the bracket and drives a fixing mechanism, the fixing mechanism comprises a horizontal supporting plate and a frame, a plurality of roll shafts which are arranged in parallel are arranged on the horizontal supporting plate, two side fixing arms are symmetrically arranged in the frame, and a tension spring is arranged between the two side fixing arms; the outer side of the water tank is provided with an inflation mechanism; the outside of the water tank is provided with a monitoring mechanism. The device for detecting the air leakage of the hydraulic CNG air cylinder has the advantages of simple structure, reasonable design, convenient use, capability of rapidly detecting the result, no need of on-site observation, only need of observation on a display and high safety.
Description
Technical Field
The invention relates to the technical field of energy equipment, in particular to a device for detecting air leakage of a hydraulic CNG air cylinder.
Background
The natural gas automobile is a gas fuel automobile taking oil modified natural gas as fuel, and is called CNG automobile for short. The methane content of the natural gas is generally more than 90%, so that the natural gas is a good fuel for an automobile engine. Natural gas has the following advantages as a fuel: (1) The combustion is stable, knocking can not occur, and the cold and hot starting is convenient; (2) The compressed natural gas is stored and transported, decompressed and combusted in a strict sealing state, so that leakage is not easy to occur, and in addition, the gas storage bottle is safe and reliable through various special destructive tests; (3) The compressed natural gas is safe in combustion, less in carbon deposition, capable of reducing air resistance and knocking, beneficial to prolonging the service life of each component of the engine, reducing the maintenance times and greatly reducing the maintenance cost; (4) the engine oil consumption of the engine can be reduced; (5) Compared with gasoline, the compressed natural gas has greatly reduced carbon monoxide, sulfur dioxide, carbon dioxide, etc. and no benzene, lead, etc. and no carcinogenic and toxic matters. Based on the advantages, some cities start to popularize and apply to vehicles which can respectively burn compressed natural gas or gasoline and compress natural gas-gasoline dual-purpose fuel, and single-fuel natural gas vehicles are greatly popularized and applied in the future.
The pressure of the compressed natural gas for vehicles is generally about 20MPa, and the compressed natural gas can be obtained by carrying out dehydration, desulfurization and purification treatment and then carrying out multistage pressurization, wherein the state of the compressed natural gas is gas during use. The CNG gas cylinder is used for storing natural gas, and once the gas filled in the gas cylinder leaks, the CNG gas cylinder brings great harm to people, property and life, so that strict requirements on the use and detection of the high-pressure gas cylinder in China are always met. The quality problems of the gas cylinder, in particular the tightness, are clearly defined, the criteria related to which are: GB/T12137-2002 'gas cylinder tightness test method', two methods for testing gas cylinder tightness are provided in the standard, a liquid coating method and a water soaking method, wherein the liquid coating method is mainly suitable for testing gas cylinder tightness at a threaded connection position of a gas cylinder valve, a valve rod position of the gas cylinder valve or a local part of the gas cylinder, certain parts of a tested gas cylinder filled with compressed gas with specified pressure are coated with test liquid to test the gas cylinder tightness, the liquid coating method has certain limitations and contingencies in practical test, the water soaking method is mainly used for immersing the gas cylinder filled with gas into a water tank to test the gas cylinder tightness, and the water soaking method is suitable for the whole gas cylinder, but the gas cylinder needs to be immersed into water manually, so that labor is consumed, and the working efficiency is low.
Disclosure of Invention
In view of the above, the invention aims to provide a device for detecting the air leakage of the hydraulic CNG air cylinder, which has the advantages of simple structure, reasonable design, convenient use, capability of rapidly detecting the result, no need of on-site observation, only need of observation on a display and high safety.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows: the device for detecting the air leakage of the hydraulic CNG air bottle comprises a water tank, wherein a bracket is arranged above the water tank, a driving mechanism is arranged at the top of the bracket and drives a fixing mechanism, the fixing mechanism comprises a horizontal supporting plate and a frame, a plurality of roll shafts which are arranged in parallel are arranged on the horizontal supporting plate, two side fixing arms are symmetrically arranged in the frame and are connected to the frame in a sliding manner, and a tension spring is arranged between the two side fixing arms;
an inflation mechanism is arranged on the outer side of the water tank;
the outside of water tank is equipped with a monitoring mechanism, monitoring mechanism includes a camera, the camera is located on the water tank, a controller is connected to the camera, a display is connected to the controller.
Further, the fixing mechanism further comprises a fixing groove, and the fixing groove is located on one side of the frame.
Further, a buffer block is arranged on the inner side of the side fixing arm.
Further, the buffer block is made of elastic plastic.
Further, the driving mechanism is a cylinder, the cylinder body of the cylinder is fixed on the top of the bracket, and the movable rod of the cylinder is fixed on the top of the frame.
Further, the side fixing arms include a first side fixing arm, a second side fixing arm, and a third side fixing arm, which are disposed parallel to each other.
Further, the first side fixing arm is slidably connected to the frame through a fixing plate.
Further, both ends of the fixed plate are provided with a sliding block.
Further, two sides of the frame are provided with a sliding rail, and the sliding blocks move on the sliding rail.
Further, the tension spring is fixed between the two fixing plates.
Compared with the prior art, the invention has the following advantages:
the device for detecting the air leakage of the hydraulic CNG air cylinder has the advantages of simple structure, reasonable design, convenient use, capability of rapidly detecting the result, no need of on-site observation, only need of observation on a display and high safety.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of two side fixing arms of the present invention.
In the figure: 1. a water tank; 2. a bracket; 3. a cylinder; 4. a horizontal support plate; 5. a frame; 6. a roll shaft; 7. a side fixing arm; 71. a first side fixing arm; 72. a second side fixed arm; 73. a third side fixing arm; 74. a fixing plate; 8. a slide block; 9. a slide rail; 10. a tension spring; 11. a fixing groove; 12. an inflation mechanism; 13. a camera; 14. a controller; 15. a display.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 and 2, a device for detecting air leakage of a hydraulic CNG air bottle comprises a water tank 1, a bracket 2 is arranged above the water tank 1, a cylinder 3 is arranged at the top of the bracket 2, the cylinder 3 drives a fixing mechanism, the cylinder body of the cylinder 3 is fixed at the top of the bracket 2, the fixing mechanism comprises a horizontal supporting plate 4 and a frame 5, a movable rod of the cylinder 3 is fixed at the top of the frame 5, a roll shaft 6 which is arranged in parallel is arranged on the horizontal supporting plate 4, two side fixing arms 7 are symmetrically arranged in the frame 5, a buffer block 8 is arranged at the inner side of the side fixing arms 7, the buffer block 8 is made of elastic plastics, the side fixing arms 7 comprise a first side fixing arm 71, a second side fixing arm 72 and a third side fixing arm 73, the first side fixing arm 71 and the third side fixing arm 73 are arranged in parallel, the first side fixing arm 71 is connected to the frame 5 in a sliding way through fixing plates 74, two ends of the fixing plates 74 are respectively provided with a sliding block 8, two sides of the frame 5 are respectively provided with a sliding rail 9, the sliding block 8 moves on the sliding rail 9, a tension spring 10 is fixed between the two fixing plates 74, and a fixing groove 11 is arranged at one side of the frame 5;
the outer side of the water tank 1 is provided with an inflation mechanism 12;
the outside of the water tank 1 is provided with a monitoring mechanism, the monitoring mechanism comprises a camera 13, the camera 13 is positioned on the water tank 1, the camera 13 is connected with a controller 14, and the controller 14 is connected with a display 15.
The working procedure of this embodiment is: when the device is used, a CNG gas cylinder is moved along a roll shaft 6 and is placed on a horizontal supporting plate 4, the bottom of the CNG gas cylinder is positioned in a fixed groove 11, two side fixed arms 7 are moved in opposite directions, the CNG gas cylinder is placed between the two side fixed arms 7, the two side fixed arms 7 move in opposite directions under the action of a tension spring 10, the CNG gas cylinder is clamped, at the moment, a buffer block 8 is in contact with the side wall of the CNG gas cylinder, and the CNG gas cylinder is filled with gas by an inflation mechanism 12;
starting a cylinder 3, wherein the cylinder 3 drives the fixing mechanism into the water tank 1;
the camera 13 of the monitoring mechanism records the situation in the water tank 1 and transmits a signal to the controller 14, and the controller 14 transmits the signal to the display 15.
The device for detecting the air leakage of the hydraulic CNG air cylinder has the advantages of simple structure, reasonable design, convenient use, capability of rapidly detecting the result, no need of on-site observation and only need of observation on a display. The safety is high.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. A device for detecting fluid pressure type CNG gas cylinder gas leakage, its characterized in that: the device comprises a water tank, wherein a bracket is arranged above the water tank, a driving mechanism is arranged at the top of the bracket, the driving mechanism drives a fixing mechanism, the fixing mechanism comprises a horizontal supporting plate and a frame, a plurality of roll shafts which are arranged in parallel are arranged on the horizontal supporting plate, two side fixing arms are symmetrically arranged in the frame, the two side fixing arms are connected to the frame in a sliding manner, and a tension spring is arranged between the two side fixing arms;
an inflation mechanism is arranged on the outer side of the water tank;
the water tank is provided with a monitoring mechanism outside, the monitoring mechanism comprises a camera, the camera is positioned on the water tank and is connected with a controller, and the controller is connected with a display;
the fixing mechanism further comprises a positioning groove, and the fixing groove is positioned on one side of the frame;
the inner side of the side fixing arm is provided with a buffer block.
2. A device for detecting the leak of a hydraulic CNG cylinder according to claim 1, wherein: the buffer block is made of elastic plastic.
3. A device for detecting the leak of a hydraulic CNG cylinder according to claim 1, wherein: the driving mechanism is an air cylinder, the cylinder body of the air cylinder is fixed at the top of the bracket, and the movable rod of the air cylinder is fixed at the top of the frame.
4. A device for detecting the leak of a hydraulic CNG cylinder according to claim 1, wherein: the side fixing arms comprise a first side fixing arm, a second side fixing arm and a third side fixing arm, and the first side fixing arm and the third side fixing arm are arranged in parallel.
5. A device for detecting a leak in a hydraulic CNG cylinder according to claim 4, wherein: the first side fixing arm is connected to the frame in a sliding manner through the fixing plate.
6. A device for detecting a leak in a hydraulic CNG cylinder according to claim 5, wherein: both ends of the fixed plate are provided with a sliding block.
7. The apparatus for detecting leakage of a hydraulic CNG cylinder according to claim 6, wherein: the two sides of the frame are provided with a sliding rail, and the sliding block moves on the sliding rail.
8. A device for detecting a leak in a hydraulic CNG cylinder according to claim 7, wherein: the tension spring is fixed between the two fixing plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610599576.3A CN106122762B (en) | 2016-07-22 | 2016-07-22 | Device for detecting air leakage of hydraulic CNG (compressed natural gas) cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610599576.3A CN106122762B (en) | 2016-07-22 | 2016-07-22 | Device for detecting air leakage of hydraulic CNG (compressed natural gas) cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106122762A CN106122762A (en) | 2016-11-16 |
| CN106122762B true CN106122762B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610599576.3A Active CN106122762B (en) | 2016-07-22 | 2016-07-22 | Device for detecting air leakage of hydraulic CNG (compressed natural gas) cylinder |
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| CN (1) | CN106122762B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146234A (en) * | 2017-12-28 | 2018-06-12 | 天津良华新能源科技有限公司 | Fluid pressure type CNG gas-cylinder retaining assemblies |
| CN112729709A (en) * | 2020-12-21 | 2021-04-30 | 湖南富佳钢瓶制造有限公司 | Liquefied gas cylinder airtightness detection device and detection method thereof |
| CN113203042B (en) * | 2021-04-01 | 2021-12-31 | 无锡恒大电子科技有限公司 | Full-automatic special gas delivery cabinet leakage detection device |
| CN114593359B (en) * | 2022-03-23 | 2024-03-15 | 嘉兴亚航信息技术有限公司 | Safety prevention monitoring system for gas cylinder filling station |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE746067A (en) * | 1969-02-21 | 1970-08-17 | Gaz De Petrole | DEVICE FOR DETECTION OF LEAKS FROM LIQUEFIED GAS BOTTLES, IN PARTICULAR PROPANE AND BUTANE |
| FR2749061A1 (en) * | 1996-05-21 | 1997-11-28 | Air Liquide | Leakage container for gas bottles |
| JPH1061891A (en) * | 1996-08-21 | 1998-03-06 | Soukouken:Kk | High pressure gas filling device |
| JP2005016709A (en) * | 2003-06-04 | 2005-01-20 | Neriki:Kk | Gas cylinder, valve device for the same, and connecting structure of gas cylinder and valve device |
| CN203443745U (en) * | 2013-08-22 | 2014-02-19 | 江苏省特种设备安全监督检验研究院宿迁分院 | Airtightess detection apparatus for vehicle natural gas bottle |
| JP2014088189A (en) * | 2012-10-29 | 2014-05-15 | Omori Mach Co Ltd | Gas charging device |
| CN104931367A (en) * | 2015-06-25 | 2015-09-23 | 北京建筑大学 | Movement life tester for upper limb joints of hermetic pressure extravehicular spacesuit |
| CN204730989U (en) * | 2015-07-20 | 2015-10-28 | 深圳先进技术研究院 | Sealing propertytest system |
| CN105173541A (en) * | 2015-09-17 | 2015-12-23 | 宁波灿炜机械制造有限公司 | High-pressure leakiness inspector for aerosol cans |
-
2016
- 2016-07-22 CN CN201610599576.3A patent/CN106122762B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE746067A (en) * | 1969-02-21 | 1970-08-17 | Gaz De Petrole | DEVICE FOR DETECTION OF LEAKS FROM LIQUEFIED GAS BOTTLES, IN PARTICULAR PROPANE AND BUTANE |
| FR2749061A1 (en) * | 1996-05-21 | 1997-11-28 | Air Liquide | Leakage container for gas bottles |
| JPH1061891A (en) * | 1996-08-21 | 1998-03-06 | Soukouken:Kk | High pressure gas filling device |
| JP2005016709A (en) * | 2003-06-04 | 2005-01-20 | Neriki:Kk | Gas cylinder, valve device for the same, and connecting structure of gas cylinder and valve device |
| JP2014088189A (en) * | 2012-10-29 | 2014-05-15 | Omori Mach Co Ltd | Gas charging device |
| CN203443745U (en) * | 2013-08-22 | 2014-02-19 | 江苏省特种设备安全监督检验研究院宿迁分院 | Airtightess detection apparatus for vehicle natural gas bottle |
| CN104931367A (en) * | 2015-06-25 | 2015-09-23 | 北京建筑大学 | Movement life tester for upper limb joints of hermetic pressure extravehicular spacesuit |
| CN204730989U (en) * | 2015-07-20 | 2015-10-28 | 深圳先进技术研究院 | Sealing propertytest system |
| CN105173541A (en) * | 2015-09-17 | 2015-12-23 | 宁波灿炜机械制造有限公司 | High-pressure leakiness inspector for aerosol cans |
Non-Patent Citations (3)
| Title |
|---|
| 压缩天然气气瓶检测管理系统的设计;高海静;;兰州交通大学学报(第04期);全文 * |
| 浅论车用气瓶安装监督检验及检验重点和常见问题的分析;范旭;;科技致富向导(第14期);全文 * |
| 火星着陆缓冲气囊冲击过程的仿真分析;冯强;王生;;计算机仿真(第11期);全文 * |
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Address after: 105-5, No. 19 Jingbin Avenue, Jingbin Industrial Park, Wuqing District, Tianjin, 301712 (centralized office area) Applicant after: TIANJIN LIANGHUA NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: 105-5, No. 19 Jingbin Avenue, Jingbin Industrial Park, Wuqing District, Tianjin, 301712 (centralized office area) Applicant before: TIANJIN LIANGHUA NEW ENERGY TECHNOLOGY Co.,Ltd. |
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