CN210265001U - Gas engine jet testing device - Google Patents
Gas engine jet testing device Download PDFInfo
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- CN210265001U CN210265001U CN201920567391.3U CN201920567391U CN210265001U CN 210265001 U CN210265001 U CN 210265001U CN 201920567391 U CN201920567391 U CN 201920567391U CN 210265001 U CN210265001 U CN 210265001U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model relates to a gas engine jet test device, which comprises an air compressor, a pressure stabilizing tank, a lower air rail, an air tightness test component and a drainage component; the air compressor is connected with the pressure stabilizing tank, and the upper air rail to be tested is connected with the pressure stabilizing tank; the lower air rail is detachably connected with the air injection valve to be tested, and the air flow in the air compressor sequentially flows through the pressure stabilizing tank, the upper air rail, the air injection valve and the lower air rail and finally flows into the drainage assembly; the drainage assembly can discharge liquid with corresponding volume according to the gas flow flowing out of the lower gas rail, and obtains the flow characteristic of the gas engine jet device to be treated according to the liquid volume; the air tightness testing assembly is arranged on the upper air rail and the lower air rail and comprises a sealing part and a pressure testing part. Compared with the prior art, the utility model has the advantages of easy operation, the test is accurate, and the time spent is short to can carry out advantages such as equipment self-checking.
Description
Technical Field
The utility model belongs to the technical field of the engine and specifically relates to a gas engine jets and spouts testing arrangement is related to.
Background
Energy conservation and emission reduction in the automobile industry are always one of the focus problems of high attention of governments of all countries, and currently, global resources are sufficient, so that automobile alternative energy with mature technology development belongs to gas fuel. Compared with a diesel engine with the same discharge capacity, the gas engine using the fuel gas has equivalent dynamic property and obvious environmental protection advantage and can more easily reach the national emission standard. The abundant natural gas and liquefied petroleum gas resources in China also provide powerful energy guarantee for the popularization and the application of the gas engine.
The injection system is an important component of the gas engine, has direct connection with the performance of the engine, and is important for the injection detection of the gas engine. Wherein the air rail and the air injection valve connected with the air rail are core components which need to be detected frequently. For better performance of gas engines, a set of devices for testing gas engine injection is required. However, the current testing devices all have the disadvantages of complex structure, large volume and complex wire arrangement.
CN201310285612.5 discloses a natural gas jet solenoid valve performance testing device and testing method, an air compressor passes through a pressure reducing valve through a manual ball valve, the gas coming out of the pressure reducing valve is processed by a noise processor and then is connected with an ultrasonic flowmeter, and is connected with a jet valve and a gas rail assembly through a surge tank, a three-way ball valve and a pipeline filter, wherein, various pressure sensors and electronic control units are involved, so that the cost is higher when the device is applied to gas jet testing of a gas engine, the wiring and control flow are more complicated when the specific device is produced, the time required for obtaining detection data is longer, and the simple and quick gas engine jet testing is difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas engine jet testing device for overcoming the defects of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
a gas engine jet testing device is used for testing the air tightness and flow characteristics of the gas engine jet testing device and comprises an air compressor, a surge tank, a lower air rail, an air tightness testing assembly and a drainage assembly; the air compressor is connected with the pressure stabilizing tank, and the upper air rail to be tested is connected with the pressure stabilizing tank; the lower air rail is detachably connected with the air injection valve to be tested, and the air flow in the air compressor sequentially flows through the pressure stabilizing tank, the upper air rail, the air injection valve and the lower air rail and finally flows into the drainage assembly; the drainage assembly can discharge liquid with corresponding volume according to the gas flow flowing out of the lower gas rail, and obtains the flow characteristic of the gas engine jet device to be treated according to the liquid volume; the air tightness testing assembly is arranged on the upper air rail and the lower air rail and comprises a sealing part and a pressure testing part, the air tightness testing assembly is used for sealing air flows in the upper air rail and the lower air rail, the pressure testing part is used for obtaining the pressure in the upper air rail and the lower air rail, and the tightness of the upper air rail is obtained according to the pressure.
Furthermore, the gas compressed by the air compressor is adopted in the gas engine gas injection testing device to replace the fuel gas compressed by the actual gas engine, so that the testing cost can be saved, and the device is suitable for large-scale batch testing.
Further, the sealing member includes a first low pressure valve and a second low pressure valve; the first low-pressure valve is arranged at an airflow inlet of the upper air rail; and the second low-pressure valve is arranged at the airflow outlet of the lower air rail.
Further, the pressure testing component comprises a first pressure sensor and a second pressure sensor; the first pressure sensor is arranged in the upper air rail; the second pressure sensor is arranged in the lower air rail; the first pressure sensor and the second pressure sensor are both in wireless or wired connection with an external computer terminal.
Furthermore, the drainage assembly comprises a gas collecting tank, a drainage pipe and a liquid collecting tank; the upper end of the gas collection tank is connected with the outlet of the lower gas rail, the bottom end of the gas collection tank is connected with the liquid collection tank through a drain pipe, and liquid in the gas collection tank can be squeezed into the liquid collection tank by gas from the lower gas rail; a liquid level meter is arranged in the liquid collecting tank, and the liquid amount in the liquid collecting tank can be obtained in real time through the liquid level meter; the liquid level meter is in wireless or wired connection with an external computer terminal.
Furthermore, the lower air rail is provided with a quick connector which can be connected with a plurality of air injection valves.
Furthermore, a high-pressure cut-off valve is arranged between the air compressor and the pressure stabilizing tank.
Furthermore, a filter is arranged between the high-pressure cut-off valve and the air compressor.
Further, a pressure regulating valve is arranged between the pressure stabilizing tank and the first low-pressure valve.
Furthermore, a pressure relief valve is arranged between the pressure stabilizing tank and the pressure regulating valve.
Compared with the prior art, the utility model has the advantages of it is following:
1) the gas engine jet testing device of the utility model uses the drainage method to measure the flow characteristic of the jet valve, has simple operation, small occupied space of the testing device and high testing precision, is superior to the measurement by the mass flow sensor, and can realize simple and quick gas engine jet testing;
2) the gas engine jet testing device of the utility model can test the air tightness of the gas rail and check the leakage of gas fuel of the gas engine;
3) the gas engine jet testing device of the utility model is provided with a self-checking device, and the air tightness of the device can be checked through two low-pressure valves and a pressure sensor;
4) the gas engine jet testing device in the utility model can be used for testing different types of jet devices, and only the upper gas rail and the jet valve need to be simply replaced;
5) the gas compressed by the air compressor in the gas engine gas injection testing device can be used for replacing fuel gas compressed by an actual gas engine, so that the gas engine gas injection testing device is used for large-scale batch testing.
Drawings
Fig. 1 is a schematic structural view of the middle gas engine jet testing device of the present invention.
In the figure: 1. an air compressor; 2. a first rubber hose; 3. a filter; 4. a high pressure shut-off valve; 5. a surge tank; 6. a pressure relief valve; 7. a third low pressure valve; 8. a pressure regulating valve; 9. a second rubber hose; 10. a first low pressure valve; 11. an upper air rail; 12. a first air blast valve; 13. a second air injection valve; 14. a third air injection valve; 15. a fourth air blast valve; 16. a first pressure sensor; 17. a second low pressure valve; 18. a third rubber hose; 19. a fourth rubber hose; 20. a liquid collecting tank; 21. a gas collection tank; 22. a second pressure sensor; 23. and a lower air rail.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
A gas engine jet testing device is used for testing the air tightness and flow characteristics of the gas engine jet testing device and comprises an air compressor 1, a pressure stabilizing tank 5, a lower air rail 23, an air tightness testing assembly and a drainage assembly, and the air tightness testing assembly is shown in figure 1.
The upper gas rail 11 to be tested is connected to the surge tank 5 via a second rubber hose 9. The lower air rail 23 is detachably connected with the air injection valve to be tested through the third rubber hose 18, and a quick connector capable of being connected with the air injection valves is arranged on the lower air rail 23. Airflow in the air compressor 1 sequentially flows through the pressure stabilizing tank 5, the upper air rail 11, the air injection valve and the lower air rail 23 and finally flows into the drainage assembly; the drainage assembly can discharge liquid with corresponding volume according to the gas flow flowing out of the lower gas rail 23, and obtains the flow characteristic of the gas engine jet device to be treated according to the liquid volume.
Airtightness test assembly section: the air tightness testing assembly is arranged on the upper air rail 11 and the lower air rail 23 and comprises a sealing part and a pressure testing part, the air tightness testing assembly is used for sealing air flows in the upper air rail 11 and the lower air rail 23, the pressure testing part is used for obtaining the pressure in the upper air rail 11 and the lower air rail 23, and the tightness of the upper air rail 11 is obtained according to the pressure. The sealing member includes a first low pressure valve 10 and a second low pressure valve 16; the first low-pressure valve 10 is arranged at an airflow inlet of the upper air rail 11; the second low pressure valve 16 is arranged at the airflow outlet of the lower air rail 23. The pressure testing component includes a first pressure sensor 16 and a second pressure sensor 22; the first pressure sensor 16 is arranged in the upper air rail 11; the second pressure sensor 22 is arranged in the lower air rail 23; the first pressure sensor 16 and the second pressure sensor 22 are both connected with an external computer terminal in a wireless or wired mode.
The drainage assembly part: comprises a gas collecting tank 21, a drain pipe 19 and a liquid collecting tank 20; the upper end of the gas collection tank 21 is connected with the outlet of the lower gas rail 23, the bottom end of the gas collection tank 21 is connected with the liquid collection tank 20 through the drain pipe 19, and the liquid in the gas collection tank 21 can be squeezed into the liquid collection tank 20 by the gas from the lower gas rail 17; a liquid level meter is arranged in the liquid collection tank 20, and the liquid amount in the liquid collection tank 20 can be obtained in real time through the liquid level meter; the liquid level meter is in wireless or wired connection with an external computer terminal.
When the method is used specifically, the method mainly comprises the following aspects.
And (3) testing the air tightness of the upper air rail:
keep first jet valve 12, second jet valve 13, third jet valve 14, fourth jet valve 15 undriven, open high pressure trip valve 4 and third low pressure valve 7 and open first low pressure valve 10, let compressed air (600kPa) about enter into last gas rail 11, then close first low pressure valve 10, observe the value that passes through first pressure sensor 16, through observing its 3 minutes's pressure decline scope, if be less than the threshold value then qualified.
And (3) testing an air injection valve:
testing parameters: and testing the gas injection amount of the gas injection valve when the fixed pulse width is opened. The test method comprises the following steps: as shown in fig. 1, the high-pressure cut-off valve 4 and the third low-pressure valve 7 are opened, the first low-pressure valve 10 is opened, the second low-pressure valve 17 is closed, the pressure before the jet valve is kept constant, the jet valve is driven by a fixed pulse width, the pressure drop of the upper air rail 11 after the jet valve works is tested, namely, the value of the first pressure sensor 16 is observed, the pressure rising of the lower air rail 23 is observed, namely, the value of the second pressure sensor 22 is observed, and the change of the two values is qualified within the threshold range.
And (3) testing the air tightness of the integral air rail:
as shown in fig. 1, the high-pressure cut-off valve 4 and the third low-pressure valve 7 are opened, the first low-pressure valve 10 is opened, the first pressure sensor 17 is closed, the air injection valve keeps working at a low frequency, the pressure value is recorded after the pressure of the whole air rail tends to be balanced, namely the values of the first pressure sensor 16 and the second pressure sensor 22 are recorded, after 5 minutes, the pressure value is recorded again, and the difference between the two pressure values is smaller than a certain value, so that the air injection valve is qualified.
Flow test of the air injection valve:
as shown in fig. 1, open high pressure trip valve 4 and third low pressure valve 7 and open low pressure valve 10, open low pressure valve 17, make first jet valve 12, second jet valve 13, third jet valve 14, fourth jet valve 15 normally spray or single injection, can measure the flow characteristic of jet valve under different modes, gas through jet valve gets into gas collection tank 21, because the difference between inside and outside pressure, the water of the same volume can be discharged to collection liquid tank 20 in, just can obtain jet valve's flow characteristic through simple calculation.
Self-checking of equipment:
airtightness of the first low-pressure valve 10: open high pressure trip valve 4 and third low pressure valve 7, close first low pressure valve 10, whether the pressure behind the test first low pressure valve 10 increases, observes first pressure sensor 16's value promptly, if increase, just explains first low pressure valve 10 gas leakage, needs to be changed.
Air tightness test of the second low pressure valve 17: open high pressure trip valve 4 and third low-pressure valve 7 and open first low-pressure valve 10, close second low-pressure valve 17, the jet valve sprays in succession and keeps the pressure in whole gas rail equal, tests the decline value of gas rail internal pressure, observes second pressure sensor 22's value promptly, if be greater than the threshold value, just explains second low-pressure valve 17 gas leakage, needs to change.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (9)
1. A gas engine jet testing device is used for testing the air tightness and flow characteristics of the gas engine jet testing device and is characterized by comprising an air compressor (1), a pressure stabilizing tank (5), a lower air rail (23), an air tightness testing assembly and a drainage assembly;
the air compressor (1) is connected with the pressure stabilizing tank (5), and the upper air rail (11) to be tested is connected with the pressure stabilizing tank (5);
the lower air rail (23) is detachably connected with an air injection valve to be tested, and air flow in the air compressor (1) sequentially flows through the pressure stabilizing tank (5), the upper air rail (11), the air injection valve and the lower air rail (23) and finally flows into the drainage assembly;
the drainage assembly can discharge liquid with corresponding volume according to the gas flow flowing out of the lower gas rail (23), and obtains the flow characteristic of the gas engine jet device to be treated according to the liquid volume;
the air tightness testing assembly is arranged on the upper air rail (11) and the lower air rail (23) and comprises a sealing part and a pressure testing part, the air tightness testing assembly is used for sealing air flows in the upper air rail (11) and the lower air rail (23), and the pressure testing part is used for obtaining the pressure in the upper air rail (11) and the lower air rail (23) and obtaining the tightness of the upper air rail (11) according to the pressure.
2. A gas engine jet test apparatus as claimed in claim 1, wherein said sealing means comprises a first low pressure valve (10) and a second low pressure valve (17);
the first low-pressure valve (10) is arranged at an airflow inlet of the upper air rail (11);
the second low-pressure valve (17) is arranged at an airflow outlet of the lower air rail (23).
3. A gas engine jet test device according to claim 1, characterized in that said pressure test means comprise a first pressure sensor (16) and a second pressure sensor (22);
the first pressure sensor (16) is arranged in the upper air rail (11);
the second pressure sensor (22) is arranged in the lower air rail (23);
the first pressure sensor (16) and the second pressure sensor (22) are connected with an external computer terminal in a wireless or wired mode.
4. A gas engine jet test device according to claim 1, characterized in that said drain assembly comprises a vapor collection tank (21), a drain pipe (19) and a vapor collection tank (20);
the upper end of the gas collection tank (21) is connected with the outlet of the lower gas rail (23), the bottom end of the gas collection tank (21) is connected with the liquid collection tank (20) through a drain pipe (19), and liquid in the gas collection tank (21) can be squeezed into the liquid collection tank (20) by gas from the lower gas rail (23);
a liquid level meter is arranged in the liquid collecting tank (20), and the liquid amount in the liquid collecting tank (20) can be obtained in real time through the liquid level meter;
the liquid level meter is in wireless or wired connection with an external computer terminal.
5. A gas engine jet test device according to claim 1, characterized in that the lower air rail (23) is provided with a quick coupling which can be connected to a plurality of jet valves.
6. The gas engine jet test device according to claim 1, wherein a high pressure cut-off valve (4) is arranged between the air compressor (1) and the surge tank (5).
7. A gas engine jet test device according to claim 6, characterized in that a filter (3) is arranged between the high pressure cut-off valve (4) and the air compressor (1).
8. A gas engine jet test device according to claim 2, characterized in that a pressure regulating valve (8) is provided between the surge tank (5) and the first low pressure valve (10).
9. A gas engine jet test device according to claim 8, characterized in that a pressure relief valve (6) is provided between the surge tank (5) and the pressure regulating valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920567391.3U CN210265001U (en) | 2019-04-24 | 2019-04-24 | Gas engine jet testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920567391.3U CN210265001U (en) | 2019-04-24 | 2019-04-24 | Gas engine jet testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210265001U true CN210265001U (en) | 2020-04-07 |
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ID=70022837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920567391.3U Expired - Fee Related CN210265001U (en) | 2019-04-24 | 2019-04-24 | Gas engine jet testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210265001U (en) |
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2019
- 2019-04-24 CN CN201920567391.3U patent/CN210265001U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 |
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| CF01 | Termination of patent right due to non-payment of annual fee |