CN218760200U - Gas engine jet testing device - Google Patents
Gas engine jet testing device Download PDFInfo
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- CN218760200U CN218760200U CN202222741298.4U CN202222741298U CN218760200U CN 218760200 U CN218760200 U CN 218760200U CN 202222741298 U CN202222741298 U CN 202222741298U CN 218760200 U CN218760200 U CN 218760200U
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Abstract
The utility model relates to the technical field of engines, a gas engine jet test device is specifically disclosed. The utility model provides a gas engine spouts jet-propelled testing arrangement, the volume of constant volume room can be adjusted according to the jet-propelled volume of jet-propelled valve, can carry out the test of pertinence to the jet-propelled valve of different models, guarantees jet-propelled characteristic test's accuracy and sensitivity. The utility model provides a gas engine spouts jet-propelled testing arrangement not only can real-time measurement jet-propelled valve single spray law and jet-propelled volume, can also utilize back pressure dynamic balance's principle, and pressure release and flow measurement module can measure instantaneous flow and then derive the multiple injection total amount of jet-propelled valve, calculate according to spraying the total amount and reacing the single jet-propelled volume, can verify each other with the single jet-propelled volume that obtains in the single injection measurement mode, and then improved the accuracy and the sensitivity of jet-propelled characteristic test of jet-propelled valve.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a gas engine jet-propelled testing arrangement.
Background
Energy conservation and emission reduction in the automobile industry are always one of the focus problems of high attention of governments of various countries, global resources are sufficient at present, and 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 the gas engine, a set of devices for testing the gas engine jet is required. However, the volume of the current gas engine jet testing device is fixed, and the measured value cannot respond instantaneously when the jet valve with small jet quantity is measured, so that the error of the measured jet rule occurs.
Therefore, it is desirable to provide a gas engine jet testing apparatus to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas engine spouts jet-propelled testing arrangement can test the jet-propelled performance of the jet-propelled valve of different models, and can implement two kinds of test modes and verify each other in order to carry out the jet-propelled performance to the jet-propelled valve, guarantees accuracy and the sensitivity at jet-propelled characteristic test.
To achieve the purpose, the utility model adopts the following technical proposal:
gas engine jet test apparatus comprising:
the air injection law measuring instrument comprises a constant volume chamber, an air injection valve is arranged on the air injection law measuring instrument, and the volume in the constant volume chamber can be adjusted according to the air injection quantity of the air injection valve;
the injection gas supply module is used for compressing the test gas to a target pressure and injecting the gas into the constant volume chamber through the gas injection valve;
the back pressure air supply module is used for pressurizing the constant volume chamber;
the pressure relief and flow measurement module is used for relieving pressure of the constant volume chamber and acquiring the flow of the decompressed gas;
and the temperature and pressure signal acquisition module is used for acquiring the gas pressure and the temperature in the constant volume chamber.
As an optional technical scheme of the gas engine jet testing device, the jet law measuring instrument further comprises a plurality of filling pieces, and the number of the filling pieces in the constant volume chamber is set according to the jet quantity of the jet valve so as to adjust the volume in the constant volume chamber.
As an optional technical scheme of the gas engine jet testing device, the filling piece is a metal cake-shaped piece matched with the inner diameter and the shape of the constant volume chamber.
As an optional technical solution of the above gas engine jet testing apparatus, the jet law measuring instrument further includes:
the gas injection law measuring instrument body is internally provided with the constant volume chamber with two open ends;
the bottom cover is detachably connected with one end of the air injection law measuring instrument body and used for plugging an opening at one end of the constant volume chamber;
the top cover is detachably connected with the other end of the air injection law measuring instrument body and used for plugging an opening at the other end of the constant volume chamber, and the temperature and pressure signal acquisition module is arranged on the top cover;
the adapter is arranged on the top cover, and the air injection valve is arranged on the adapter.
As an optional technical scheme of the gas engine jet testing device, a first sealing ring is arranged on the inner side of the top cover along the circumferential direction, and the first sealing ring is abutted against the end face of the jet law measuring instrument body;
and a second sealing ring is arranged on the inner side of the bottom cover along the circumferential direction and is abutted against the end face of the air injection law measuring instrument body.
As an optional technical scheme of the gas engine jet testing device, the top cover is connected with one end of the jet law measuring instrument body through a bolt;
the bottom cover is connected with the other end of the air injection law measuring instrument body through a bolt.
As an alternative solution to the above gas engine jet testing apparatus, the jet air supply module includes:
a high pressure gas supply unit;
the buffer tank, the gas vent of high pressure gas supply unit with the air inlet of buffer tank is through first high-pressurepipe intercommunication, just be equipped with gas pressure regulating valve on the first high-pressurepipe, the gas vent of buffer tank pass through second high-pressurepipe with the jet-propelled valve intercommunication.
As an optional technical scheme of foretell gas engine jet testing arrangement, backpressure air feed module includes the air feed pump, the gas vent of air feed pump pass through the third high-pressure air pipe with constant volume chamber intercommunication, be equipped with on the third high-pressure air pipe make gaseous by the air feed pump to constant volume chamber one-way flow's check valve.
As an optional technical scheme of foretell jet-propelled testing arrangement of gas engine, pressure release and flow measurement module includes the pressure release pipeline, the pressure release pipeline with constant volume chamber intercommunication, be equipped with relief valve and flowmeter on the pressure release pipeline, the flowmeter set up in the low reaches of relief valve, the flowmeter is configured to the gas flow who obtains the pressure release.
As an optional technical scheme of the gas engine jet testing device, the gas engine jet testing device further comprises a signal acquisition module, wherein the signal acquisition module is electrically connected with the jet valve, the jet gas supply module and the temperature and pressure signal acquisition module respectively.
The utility model has the advantages that:
the utility model provides a gas engine spouts jet-propelled testing arrangement, the volume of constant volume room can be adjusted according to the jet-propelled volume of jet-propelled valve, can carry out the test of pertinence to the jet-propelled valve of different models, guarantees jet-propelled characteristic test's accuracy and sensitivity. The jet gas supply module jets gas into the constant volume cavity to achieve the required jet pressure; the back pressure air supply module is used for pressurizing the constant volume chamber to ensure that the pressure in the constant volume chamber reaches the required pressure; the pressure relief and flow measurement module is used for adjusting the dynamic balance of total air injection amount and total pressure relief amount and acquiring the flow of the decompressed air; the utility model provides a gas engine spouts jet-propelled testing arrangement not only can real-time measurement jet-propelled valve single spray law and jet-propelled volume, can also utilize back pressure dynamic balance's principle, and pressure release and flow measurement module can measure instantaneous flow and then derive the multiple injection total amount of jet-propelled valve, calculate according to spraying the total amount and reacing the single jet-propelled volume, can verify each other with the single jet-propelled volume that obtains in the single injection measurement mode, and then improved the accuracy and the sensitivity of jet-propelled characteristic test of jet-propelled valve.
Drawings
Fig. 1 is a schematic structural diagram of a gas engine jet testing device provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air injection law measuring instrument provided by the embodiment of the present invention.
In the figure:
2. an air blast valve; 6. a temperature and pressure signal acquisition module;
11. a constant volume chamber; 12. a filling member; 13. a jet law measuring instrument body; 14. a bottom cover; 15. a top cover; 16. an adapter; 17. a first seal ring; 18. a second seal ring;
31. a high pressure gas supply unit; 32. a buffer tank; 33. a first high-pressure air pipe; 34. a gas pressure regulating valve; 35. a second high-pressure air pipe;
41. an air supply pump; 42. a third high-pressure air pipe; 43. a one-way valve; 44. a pressure gauge;
51. a pressure relief pipeline; 52. a pressure relief valve; 53. a flow meter;
71. a driver; 72. a data acquisition card; 73. and (4) an upper computer.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
To among the prior art, gas engine jet test device's volume is fixed, causes the measured value easily and can not transient response when measuring the less gas jet valve of jet-propelled volume, leads to measuring the problem that the rule of spraying error appears, and this embodiment provides a gas engine jet test device in order to solve above-mentioned technical problem.
As shown in fig. 1 and fig. 2, specifically, the gas engine jet testing apparatus provided in this embodiment includes a jet law measuring instrument, a jet air supply module, a back pressure air supply module, a pressure relief and flow measurement module, and a temperature and pressure signal acquisition module 6.
The air injection law measuring instrument comprises a constant volume chamber 11, an air injection valve 2 is arranged on the air injection law measuring instrument, and the volume in the constant volume chamber 11 can be adjusted according to the air injection quantity of the air injection valve 2. The injection gas supply module is used for compressing the test gas to a target pressure and injecting the gas into the constant volume chamber 11 through the gas injection valve 2. The back pressure air supply module is used for pressurizing the constant volume chamber 11. The pressure relief and flow measurement module is used for relieving pressure of the constant volume chamber 11 and obtaining the flow of the decompressed gas. The temperature signal acquisition module 6 is used for acquiring the gas pressure and temperature in the constant volume chamber 11.
The gas engine jet testing device provided by the embodiment has the advantages that the volume of the constant volume chamber 11 can be adjusted according to the jet quantity of the jet valve 2, the jet valves 2 of different models can be subjected to targeted testing, and the accuracy and the sensitivity of jet characteristic testing are ensured. The injection gas supply module injects gas into the constant volume chamber 11 to achieve the required injection pressure; the back pressure air supply module is used for pressurizing the constant volume chamber 11 and ensuring that the pressure in the constant volume chamber 11 reaches the required pressure; the pressure relief and flow measurement module is used for adjusting the dynamic balance of the total gas injection amount and the total pressure relief amount and acquiring the flow of the pressure-relieved gas; the jet-propelled testing arrangement of gas engine that this embodiment provided not only can 2 single injection rules of real-time measurement jet-valve and jet-propelled volume, can also utilize backpressure dynamic balance's principle, instantaneous flow and then the multiple injection total amount that reachs jet-valve 2 can be measured to pressure release and flow measurement module, calculate according to the injection total amount and reachs the single jet-propelled volume, can verify each other with the single jet-propelled volume that obtains in the single injection measurement mode, and then improved the accuracy and the sensitivity of the 2 jet-propelled characteristic tests of jet-valve.
In this embodiment, the air injection law measuring instrument further includes a plurality of filling members 12, and the number of the filling members 12 in the constant volume chamber 11 is set according to the air injection amount of the air injection valve 2 to adjust the volume in the constant volume chamber 11. Specifically, when the volume in the constant volume chamber 11 needs to be reduced, the filler 12 is added to the constant volume chamber 11, and when the volume in the constant volume chamber 11 needs to be increased, the filler 12 in the constant volume chamber 11 is taken out.
Further, the filling member 12 is a metal cake member matching with the inner diameter and shape of the constant volume chamber 11, and the thickness of the metal cake member can be set according to the gas injection characteristics of different gas injection valves 2, for example, a gas injection performance test can be performed on one type of gas injection valve 2 by adding or subtracting one metal cake member to the constant volume chamber 11.
The air injection law measuring instrument provided by the embodiment further comprises an air injection law measuring instrument body 13, a bottom cover 14 and a top cover 15. Be equipped with both ends open-ended constant volume chamber 11 in the jet-propelled law measuring apparatu body 13, bottom 14 can be dismantled with the one end of jet-propelled law measuring apparatu body 13 and be connected, and bottom 14 is used for the one end opening of shutoff constant volume chamber 11, and top 15 can be dismantled with the other end of jet-propelled law measuring apparatu body 13 and be connected, and top 15 is used for the other end opening of shutoff constant volume chamber 11, and warm-pressing signal acquisition module 6 sets up on top 15. The cover 15 is also provided with an adapter 16, and the gas injection valve 2 is mounted on the adapter 16.
The air injection law measuring instrument body 13 is made of stainless steel. The top cover 15 and the bottom cover 14 are respectively connected with the air injection law measuring instrument body 13 in a sealing mode. Specifically, a first sealing ring 17 is arranged on the inner side of the top cover 15 along the circumferential direction, and the first sealing ring 17 abuts against the end face of the air injection law measuring instrument body 13. The top cover 15 is connected with one end of the air injection law measuring instrument body 13 through a bolt, the connecting structure is simple, and the top cover 15 is convenient to mount and dismount so as to change the volume in the constant volume chamber 11. When the top cover 15 and the air injection law measuring instrument body 13 are connected through the bolts, the bolts are screwed, so that the first sealing ring 17 is abutted against the end face of the air injection law measuring instrument body 13, and the sealing of the constant volume chamber 11 is further realized.
Further, a first groove is formed in the inner side of the top cover 15 along the circumferential direction, the first sealing ring 17 is installed in the first groove, and the portion of the first sealing ring 17 is arranged on the outer side of the first groove and used for being abutted to the end face of the air injection law measuring instrument body 13.
In order to improve the structural strength of the connection between the top cover 15 and the air injection law measuring instrument body 13 and improve the sealing performance of the constant volume chamber 11, a plurality of bolt connection top covers 15 and the air injection law measuring instrument body 13 are arranged along the circumferential direction of the top cover 15 at intervals.
The inner side of the bottom cover 14 is circumferentially provided with a second sealing ring 18, and the second sealing ring 18 is abutted against the end surface of the air injection law measuring instrument body 13. The bottom cover 14 is connected with the other end of the air injection law measuring instrument body 13 through a bolt, the connecting structure is simple, and the top cover 15 is convenient to mount and dismount. When the bottom cover 14 and the gas injection law measuring instrument body 13 are connected by using the bolt, the bolt is screwed, so that the second sealing ring 18 is abutted against the end face of the gas injection law measuring instrument body 13, and the sealing of the constant volume chamber 11 is further realized.
Further, a second groove is formed in the inner side of the bottom cover 14 along the circumferential direction, the second seal ring 18 is installed in the second groove, and a part of the second seal ring 18 is arranged outside the second groove and used for being abutted to the end face of the air injection law measuring instrument body 13.
In order to improve the structural strength of the connection between the bottom cover 14 and the air injection law measuring instrument body 13 and improve the sealing performance of the constant volume chamber 11, a plurality of bolts are arranged along the circumferential direction of the bottom cover 14 at intervals to connect the bottom cover 14 and the air injection law measuring instrument body 13.
The injection air supply module provided by the embodiment comprises a high-pressure air supply unit 31 and a buffer tank 32, wherein an air outlet of the high-pressure air supply unit 31 is communicated with an air inlet of the buffer tank 32 through a first high-pressure air pipe 33, a gas pressure regulating valve 34 is arranged on the first high-pressure air pipe 33, and an air outlet of the buffer tank 32 is communicated with the air injection valve 2 through a second high-pressure air pipe 35. The high-pressure gas supply unit 31 supplies gas with the required injection pressure of the gas nozzle 2 into the buffer tank 32 through the gas pressure regulating valve 34, obtains the required injection pressure of the gas nozzle 2 through regulating the gas pressure regulating valve 34, replenishes gas into the buffer tank 32 in real time, and the gas nozzle 2 is triggered to inject gas into the constant volume chamber 11. The high-pressure air supply unit 31 is adopted, so that the adjustable range of the air injection pressure of the air injection valve 2 is wide, the air injection valve is suitable for various types of air injection valves 2, and the applicability and the stability during testing are ensured.
The back pressure gas supply module provided in this embodiment includes a gas supply pump 41, an exhaust port of the gas supply pump 41 communicates with the constant volume chamber 11 through a third high pressure gas pipe 42, and the third high pressure gas pipe 42 is provided with a check valve 43 for allowing gas to flow from the gas supply pump 41 to the constant volume chamber 11 in a one-way manner. In order to simulate the real injection condition of the gas injection valve 2, the pressure inside the constant volume chamber 11 needs to be increased, so that the gas is continuously supplied into the constant volume chamber 11 through the back pressure gas supply module. In order to monitor the gas pressure inside the constant volume chamber 11, a pressure gauge 44 is connected to the constant volume chamber 11, and when the gas pressure inside the constant volume chamber 11 reaches a desired pressure, the gas supply pump 41 stops operating. When the gas pressure in the detection constant volume chamber 11 does not reach the required pressure, the gas supply pump 41 starts to operate to replenish the gas into the constant volume chamber 11. In the present embodiment, the air supply pump 41 is an air compressor.
The pressure relief and flow measurement module comprises a pressure relief pipeline 51, the pressure relief pipeline 1 is communicated with the constant volume chamber 11, a pressure relief valve 52 and a flow meter 53 are arranged on the pressure relief pipeline 51, the flow meter 53 is arranged at the downstream of the pressure relief valve 52, and the flow meter 53 is configured to obtain the gas flow of pressure relief. After the test experiment is completed, the pressure release valve 52 is opened, and the gas in the constant volume chamber 11 is discharged through the pressure release line 51.
The gas engine jet testing device provided by the embodiment further comprises a signal acquisition module, and the signal acquisition module is electrically connected with the jet valve 2, the jet gas supply module and the temperature and pressure signal acquisition module 6 respectively. Specifically, the signal acquisition module controls the start and the close of the gas injection valve 2, the signal acquisition module controls whether the injection gas supply module provides gas for the gas injection valve 2, the signal acquisition module controls the pressure relief and the flow measurement module whether to discharge the gas in the constant volume chamber 11, and the signal acquisition module controls the signal acquired by the temperature and pressure signal acquisition module 6 to be received and performs corresponding processing. In this embodiment, the circuit for electrically connecting the signal acquisition module and each module is the prior art, and is not described in detail herein.
The temperature and pressure signal acquisition module 6 converts the acquired pressure signal and temperature signal into electric signals to be transmitted to the signal acquisition module, and the signal acquisition module controls the air injection valve 2 to work according to the acquired electric signals.
The signal acquisition module controls the gas pressure regulating valve 34 to open or close according to the acquired gas pressure in the buffer tank 32, and gas is injected into the buffer tank 32 according to the requirement.
In this embodiment, the signal acquisition module includes an upper computer 73, a data acquisition card 72 and a driver 71, the driver 71 controls the operation of the gas injection valve 2, and the data acquisition card 72 acquires a signal of the gas pressure in the buffer tank 32 and acquires a signal of the gas pressure and the temperature in the constant volume chamber 11. Specifically, the connection circuit of the upper computer 73, the data acquisition card 72 and the driver 71 is conventional, and is not limited herein.
The gas engine jet test device provided by the embodiment has two test modes, one is a test for the single jet rule and the jet quantity of the jet valve 2, and the other is a test for multiple jets of the jet valve 2.
When carrying out the jet-propelled law of single and spout the tolerance test to gas spraying valve 2, high pressure gas supply unit 31 passes through gas pressure governing valve 34 and sprays the gas of required pressure in to buffer tank 32, signal acquisition module triggers 2 work of gas spraying valve and carries out the single injection, the gas pressure in the constant volume room 11 produces the change, the temperature and the pressure value transmission of warm pressure signal acquisition module 6 collection give signal acquisition module, signal acquisition module calculates according to the temperature and the pressure value that acquire and reachs 2 single injection laws of gas spraying valve and single and spouts the tolerance.
When carrying out the multiple injection measurement to jet valve 2, at first close backpressure air feed module, the backpressure value of record this moment, make jet valve 2 spray at suitable injection pulse width and injection frequency, the backpressure of the gas in constant volume room 11 slowly rises, adjust the pressure release and make the gas pressure in constant volume room 11 slowly descend with flow measurement module, and reach the backpressure value of previous record, the instantaneous flow value of gas when obtaining the pressure release simultaneously, obtain jet valve 2 and spray the total amount many times, calculate according to the number of times that jet valve 2 sprays and draw single injection volume, compare with the jet valve 2 single that obtains when carrying out single jet rule and jet volume test to jet valve 2 and spray the volume and verify each other, guarantee the accuracy of test structure.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. Gas engine jet testing device, its characterized in that includes:
the air injection rule measuring instrument comprises a constant volume chamber (11), an air injection valve (2) is arranged on the air injection rule measuring instrument, and the volume in the constant volume chamber (11) can be adjusted according to the air injection quantity of the air injection valve (2);
the injection gas supply module is used for compressing the test gas to a target pressure and injecting the gas into the constant volume chamber (11) through the gas injection valve (2);
the back pressure air supply module is used for pressurizing the constant volume chamber (11);
the pressure relief and flow measurement module is used for relieving pressure of the constant volume chamber (11) and acquiring the flow of the decompressed gas;
and the temperature and pressure signal acquisition module (6) is used for acquiring the gas pressure and temperature in the constant volume chamber (11).
2. The gas engine jet test device according to claim 1, wherein the jet law measuring instrument further comprises a plurality of filling members (12), and the number of the filling members (12) in the constant volume chamber (11) is set according to the jet quantity of the jet valve (2) to adjust the volume in the constant volume chamber (11).
3. The gas engine jet test device according to claim 2, characterized in that the filler (12) is a metal cake matching the inner diameter and shape of the constant volume chamber (11).
4. A gas engine jet test device according to claim 2, wherein the jet law gauge further comprises:
the air injection law measuring instrument comprises an air injection law measuring instrument body (13), wherein the air injection law measuring instrument body (13) is internally provided with a constant volume chamber (11) with two open ends;
the bottom cover (14) is detachably connected with one end of the air injection law measuring instrument body (13) and is used for plugging an opening at one end of the constant volume chamber (11);
the top cover (15) is detachably connected with the other end of the air injection law measuring instrument body (13) and used for plugging an opening at the other end of the constant volume chamber (11), and the temperature and pressure signal acquisition module (6) is arranged on the top cover (15);
an adapter (16) arranged on the top cover (15), the air injection valve (2) being mounted on the adapter (16).
5. The gas engine jet test device according to claim 4, wherein a first sealing ring (17) is arranged on the inner side of the top cover (15) along the circumferential direction, and the first sealing ring (17) is abutted against the end face of the jet law measuring instrument body (13);
and a second sealing ring (18) is arranged on the inner side of the bottom cover (14) along the circumferential direction, and the second sealing ring (18) is abutted against the end face of the air injection law measuring instrument body (13).
6. The gas engine jet test device according to claim 4, wherein the top cover (15) is bolted to one end of the jet law measuring instrument body (13);
the bottom cover (14) is connected with the other end of the air injection law measuring instrument body (13) through a bolt.
7. A gas engine jet test apparatus as recited in claim 1, wherein the jet air supply module comprises:
a high-pressure gas supply unit (31);
buffer tank (32), the gas vent of high pressure gas supply unit (31) with the air inlet of buffer tank (32) is through first high-pressurepipe (33) intercommunication, just be equipped with gas pressure regulating valve (34) on first high-pressurepipe (33), the gas vent of buffer tank (32) pass through second high-pressurepipe (35) with jet valve (2) intercommunication.
8. The gas engine jet test device according to claim 1, wherein the back pressure air supply module comprises an air supply pump (41), an air outlet of the air supply pump (41) is communicated with the constant volume chamber (11) through a third high-pressure air pipe (42), and a check valve (43) for making air flow from the air supply pump (41) to the constant volume chamber (11) in a one-way manner is arranged on the third high-pressure air pipe (42).
9. The gas engine jet test device according to claim 1, characterized in that said pressure and flow measurement module comprises a pressure relief line (51), said pressure relief line (51) being in communication with said volumetric chamber (11), said pressure relief line (51) being provided with a pressure relief valve (52) and a flow meter (53), said flow meter (53) being provided downstream of said pressure relief valve (52), said flow meter (53) being configured to obtain a flow rate of the gas being relieved.
10. The gas engine jet test device of claim 1, further comprising a signal acquisition module electrically connected to the jet valve (2), the jet gas supply module, and the temperature and pressure signal acquisition module (6), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222741298.4U CN218760200U (en) | 2022-10-18 | 2022-10-18 | Gas engine jet testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222741298.4U CN218760200U (en) | 2022-10-18 | 2022-10-18 | Gas engine jet testing device |
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| CN218760200U true CN218760200U (en) | 2023-03-28 |
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| CN202222741298.4U Active CN218760200U (en) | 2022-10-18 | 2022-10-18 | Gas engine jet testing device |
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