CN215261852U - A test device for high pressure gas supply system - Google Patents
A test device for high pressure gas supply system Download PDFInfo
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- CN215261852U CN215261852U CN202120079742.3U CN202120079742U CN215261852U CN 215261852 U CN215261852 U CN 215261852U CN 202120079742 U CN202120079742 U CN 202120079742U CN 215261852 U CN215261852 U CN 215261852U
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Abstract
本实用新型涉及测试技术领域，公开了一种高压燃气供给系统的试验装置，包括液压泵、LNG泵、液压油散热器、液压油箱、电磁控制阀、变频电机、液氮储罐、泵池、缓冲罐、流量温度压力传感器、扭矩转速传感器、第三温度压力传感器、第一支架和与其间隔设置的第二支架。本实用新型提供的高压燃气供给系统的试验装置，不仅利用变频电机可以模拟不同工况下直喷发动机的耗气量，还可以对液氨泵的能耗进行监测，进行高压燃气供给系统的功能试验和耐久试验；采用液氮替代LNG，提高了试验时的安全性，对空气无污染，降低了试验成本；将电控部分和非电控部分分隔设置，提高了采用本实用新型提供的高压燃气供给系统的试验装置进行试验时的安全性。
The utility model relates to the technical field of testing, and discloses a testing device for a high-pressure gas supply system, comprising a hydraulic pump, an LNG pump, a hydraulic oil radiator, a hydraulic oil tank, an electromagnetic control valve, a frequency conversion motor, a liquid nitrogen storage tank, a pump pool, A buffer tank, a flow temperature and pressure sensor, a torque and rotational speed sensor, a third temperature and pressure sensor, a first support, and a second support spaced therefrom. The test device for the high-pressure gas supply system provided by the utility model can not only use the variable frequency motor to simulate the gas consumption of the direct injection engine under different working conditions, but also monitor the energy consumption of the liquid ammonia pump and carry out the functional test of the high-pressure gas supply system. and durability test; the use of liquid nitrogen instead of LNG improves the safety during the test, does not pollute the air, and reduces the test cost; the electric control part and the non-electric control part are separated and arranged, which improves the high-pressure gas provided by the utility model. The safety of the test equipment of the supply system during the test.
Description
Technical Field
The utility model relates to a test technical field especially relates to a high pressure gas feed system's test device.
Background
In the process of developing the gas direct injection engine, a function test and a durability test are required to be carried out on the high-pressure gas supply system. However, the existing function and durability test system for the high-pressure fuel gas supply system has the defects of single function and high cost; and the LNG pump is adopted for testing, and the test gas is LNG, so that the risk is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high pressure gas feed system's test device can reduce cost and experimental danger.
To achieve the purpose, the utility model adopts the following technical proposal:
a test apparatus for a high-pressure gas supply system, comprising:
the LNG pump comprises a hydraulic pump, an LNG pump, a hydraulic oil radiator, a hydraulic oil tank and an electromagnetic control valve, wherein the electromagnetic control valve is used for selectively enabling one of an oil inlet and an oil outlet of the LNG pump to be communicated with an oil outlet of the hydraulic pump, the other one of the oil inlet and the oil outlet of the LNG pump to be communicated with the hydraulic oil tank through the hydraulic oil radiator, the oil inlet and the oil outlet of the LNG pump are respectively provided with a first temperature pressure sensor, the oil inlet and the oil outlet of the hydraulic oil radiator are respectively provided with a second temperature pressure sensor, and the opening degree of the electromagnetic control valve is adjustable;
the variable frequency motor is used for driving the hydraulic pump to rotate;
the liquid nitrogen storage tank is used for storing liquid nitrogen, the liquid nitrogen storage tank is communicated with a liquid nitrogen inlet of the pump pool through a low-temperature cut-off valve, an air outlet of the pump pool is communicated with an air inlet of the buffer tank, the buffer tank is connected with an air outlet pipeline, and a back pressure valve, a flowmeter and an electric control throttle valve are arranged on the air outlet pipeline; the LNG pump is used for pressurizing and vaporizing liquid nitrogen in the pump pool;
the flow temperature and pressure sensor is used for detecting the oil temperature, the pressure and the flow of the oil outlet of the hydraulic pump;
the torque and rotating speed sensor is used for detecting the rotating speed and the torque of the variable frequency motor;
a third temperature and pressure sensor for measuring the temperature and pressure of the nitrogen gas entering the buffer tank through the pump pool;
first support and rather than the second support that the interval set up, inverter motor, solenoid electric valve, flow temperature pressure sensor, torque revolution speed sensor, first temperature pressure sensor, second temperature pressure sensor, third temperature pressure sensor, flowmeter and automatically controlled choke valve all locate on the first support, hydraulic pump, LNG pump, hydraulic oil radiator, hydraulic tank, liquid nitrogen storage tank, pump sump and buffer tank all locate on the second support.
As a preferable technical solution of the testing device of the high-pressure fuel gas supply system, a liquid level sensor is arranged in the pump pool.
In a preferred embodiment of the test apparatus for the high-pressure fuel gas supply system, the liquid nitrogen storage tank is communicated with a liquid nitrogen inlet of the pump tank through a cryogenic pipe, and the cryogenic shutoff valve is provided on the cryogenic pipe.
As a preferable aspect of the test apparatus for the high-pressure fuel gas supply system, the low-temperature pipe is provided with a first check valve.
As a preferable technical solution of the testing apparatus for the high-pressure gas supply system, the electromagnetic control valve is a two-position four-way electromagnetic directional valve.
As a preferable technical scheme of the test device of the high-pressure fuel gas supply system, the hydraulic oil tank is communicated with an oil inlet of the hydraulic pump through an oil inlet pipeline, and a filter is arranged on the oil inlet pipeline.
As a preferable technical solution of the testing device of the high-pressure fuel gas supply system, the electrically controlled throttle valve is a proportional solenoid valve.
As a preferable embodiment of the test apparatus for the high-pressure fuel gas supply system, the LNG pump is a plunger pump.
As a preferable technical solution of the testing apparatus for the high-pressure gas supply system, the flow rate, temperature and pressure sensor is disposed between the electromagnetic control valve and an oil outlet of the hydraulic pump.
As a preferable technical solution of the testing device of the high-pressure fuel gas supply system, the gas outlet of the pump pool is communicated with the gas inlet of the buffer tank through a second one-way valve.
The utility model has the advantages that: the utility model provides a high-pressure gas feed system's test device not only utilizes inverter motor can simulate the air consumption volume of directly spouting the engine under the different work condition, can also monitor the energy consumption of liquid ammonia pump, carries out high-pressure gas feed system's functional test and endurance test.
The liquid nitrogen is adopted to replace LNG, so that the safety during the test is improved, no pollution is caused to air, and the test cost is reduced; separate the setting with automatically controlled part and non-automatically controlled part, improved the adoption the utility model provides a security when high-pressure gas feed system's test device is experimental.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a testing apparatus of a high-pressure gas supply system according to an embodiment of the present invention.
In the figure:
1. a motor driver; 2. a variable frequency motor; 3. a torque speed sensor; 4. a hydraulic pump; 5. a flow temperature pressure sensor; 6. an electromagnetic control valve; 7. an LNG pump; 8. a pump pool; 9. a low temperature shut-off valve; 10. a liquid nitrogen storage tank; 11. a third temperature and pressure sensor; 12. a buffer tank; 13. a controller; 14. a hydraulic oil radiator; 15. a hydraulic oil tank; 16. an electrically controlled throttle valve; 17. a flow meter; 18. a back pressure valve.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
As shown in fig. 1, the present embodiment provides a testing apparatus for a high-pressure fuel gas supply system, including a hydraulic pump 4, an LNG pump 7, a hydraulic oil radiator 14, a hydraulic oil tank 15, an electromagnetic control valve 6, a variable frequency motor 2, a pump pool 8, a buffer tank 12, a liquid nitrogen storage tank 10, a flow rate temperature and pressure sensor 5, a torque and rotation speed sensor 3, and a third temperature and pressure sensor 11, where the electromagnetic control valve 6 is configured to selectively communicate one of an oil inlet and an oil outlet of the LNG pump 7 with an oil outlet of the hydraulic pump 4, and communicate the other with the hydraulic oil tank 15 through the hydraulic oil radiator 14, the oil inlet and the oil outlet of the LNG pump 7 are both provided with the first temperature and pressure sensor, and the oil inlet and the oil outlet of the hydraulic oil radiator 14 are both provided with the second temperature and pressure sensor. In this embodiment, the electromagnetic control valve 6 is a two-position four-way electromagnetic directional valve, the LNG pump 7 is a plunger pump, and the variable frequency motor 2 is provided with a motor driver 1 communicating with a motor controller thereof, so as to simulate corresponding power parameters of the engine.
The variable frequency motor 2 is used for driving the hydraulic pump 4 to rotate, the liquid nitrogen storage tank 10 is used for storing liquid nitrogen, the liquid nitrogen storage tank 10 is communicated with a liquid nitrogen inlet of the pump pool 8 through a low-temperature cut-off valve 9, a gas outlet of the pump pool 8 is communicated with a gas inlet of the buffer tank 12, the buffer tank 12 is connected with a gas outlet pipeline, a back pressure valve 18, a flowmeter 17 and an electric control throttle valve 16 are arranged on the gas outlet pipeline, the LNG pump 7 is used for pressurizing and vaporizing the liquid nitrogen in the pump pool 8, and the flow temperature and pressure sensor 5 is used for detecting the oil temperature, the pressure and the flow of a gas outlet of the hydraulic pump 4; the torque and rotating speed sensor 3 is used for detecting the rotating speed and the torque of the variable frequency motor 2; a third temperature and pressure sensor 11 is used to measure the temperature and pressure of the nitrogen gas entering the buffer tank 12 through the pump sump 8.
The testing device of the high-pressure fuel gas supply system further comprises a controller 13, the controller 13 is electrically connected with the variable frequency motor 2, the electromagnetic control valve 6, the first temperature pressure sensor, the second temperature pressure sensor, the low-temperature cut-off valve 9, the flowmeter 17, the flow rate temperature pressure sensor 5, the electronic control throttle valve 16, the torque rotating speed sensor 3 and the third temperature pressure sensor 11, the variable frequency motor 2 controls the rotating speed of the hydraulic pump 4 to simulate the rotating speed of the engine through the variable frequency motor 2, the rotating speed and the torque of the variable frequency motor 2 are measured in real time through the torque rotating speed sensor 3 to obtain the rotating speed and the input torque of the hydraulic pump 4, the flow rate temperature pressure sensor 5 measures the oil temperature, the pressure and the flow rate of the hydraulic oil output by the hydraulic pump 4 in real time, and the controller 13 measures the rotating speed and the input torque of the hydraulic pump 4 and the oil temperature, the pressure and the flow rate of the hydraulic oil output by the hydraulic pump 4, the efficiency and energy consumption of the hydraulic pump 4 are calculated. In this embodiment, the flow rate temperature pressure sensor 5 is provided between the solenoid control valve 6 and the oil outlet of the hydraulic pump 4.
The electromagnetic control valve 6 drives the LNG pump 7 to reciprocate by changing the flow direction of the hydraulic oil so as to pressurize and vaporize the liquid nitrogen in the pump pool 8 to form high-pressure nitrogen, the high-pressure nitrogen enters the buffer tank 12, and the temperature and the pressure of the high-pressure nitrogen entering the buffer tank 12 are measured in real time through the third temperature and pressure sensor 11. The back pressure valve 18 is used for opening when the pressure in the gas outlet pipeline is too high, and releasing the pressure in the buffer tank 12 so as to ensure the safety of the system. The flow meter 17 is used for measuring the flow of the high-pressure nitrogen in real time, the opening of the electromagnetic control valve 6 is adjustable, and the flow of the hydraulic oil sent to the LNG pump 7 can be adjusted by adjusting the flow area of the electronic control throttle valve 16 so as to adjust the flow of the high-pressure nitrogen. Through the hydraulic oil flow that hydraulic pump 4 carried, the temperature and the pressure of the oil inlet and the oil-out of LNG pump 7 to and the temperature and the pressure of the high-pressure nitrogen gas that gets into in buffer tank 12, calculate the work efficiency of LNG pump 7, whether in time discover LNG pump 7 is unusual in carrying out the endurance test process to high-pressure gas feed system.
The temperature and the pressure of an oil inlet and an oil outlet of the LNG pump 7 and the temperature and the pressure of an oil inlet and an oil outlet of the hydraulic oil radiator 14 are monitored in real time, a functional test and a thermal balance test of a hydraulic system formed by the hydraulic pump 4, the LNG pump 7, the hydraulic oil radiator 14 and the hydraulic oil tank 15 are carried out, and whether the design of the high-pressure gas supply system is reasonable or not is evaluated to provide data support for the follow-up improved design of the high-pressure gas supply system.
The liquid nitrogen storage tank 10 can provide sufficient liquid nitrogen for the pump pool 8, and meets the continuous working requirement of the LNG pump 7 so as to carry out the durability test of the LNG pump 7. Preferably, a liquid level sensor is arranged in the pump pool 8, when the liquid level in the pump pool 8 is low, the low-temperature cut-off valve 9 is opened, and the liquid nitrogen storage tank 10 provides liquid nitrogen for the pump pool 8 in time; when the liquid level in the pump pool 8 reaches a certain height, the low-temperature cut-off valve 9 is closed to avoid the excessive liquid nitrogen in the pump pool 8.
Specifically, a liquid nitrogen storage tank 10 is communicated with a liquid nitrogen inlet of the pump pool 8 through a cryogenic pipe, and a cryogenic cut-off valve 9 is arranged on the cryogenic pipe.
The embodiment replaces LNG through the liquid nitrogen to carry out endurance test, has improved experimental security, practices thrift the test expense, and the liquid nitrogen temperature is lower moreover, and is stricter to the examination of LNG pump 7, and is pollution-free to the air.
The test device of the high-pressure gas supply system provided by the embodiment can be used for a gas direct injection engine, and can also be used for replacing liquid nitrogen with liquid hydrogen or LNG so as to be used in places such as a ship high-pressure gas supply station and a high-pressure hydrogen station.
In order to avoid backflow of liquid nitrogen, the present embodiment is provided with a first check valve on the cryostraw. In order to avoid the backflow of the high-pressure nitrogen in the buffer tank 12, in this embodiment, the air outlet of the pump pool 8 is communicated with the air inlet of the buffer tank 12 through a nitrogen pipeline, and a second one-way valve is arranged on the nitrogen pipeline to enable the air outlet of the pump pool 8 to be communicated with the air inlet of the buffer tank 12 in a one-way mode.
Further, the hydraulic oil tank 15 is communicated with an oil inlet of the hydraulic pump 4 through an oil inlet pipeline, and a filter is arranged on the oil inlet pipeline. The hydraulic oil entering the hydraulic pump 4 is filtered by a filter to avoid the hydraulic pump 4 being blocked.
Further, the electronically controlled throttle valve 16 is a proportional solenoid valve, so that the pressure in the buffer tank 12 is adjusted through the electronically controlled throttle valve 16, the nitrogen flow is controlled in real time, and the simulation of the gas consumption of the gas direct injection engine under different working conditions is realized.
Further, the testing device of the high-pressure fuel gas supply system further comprises a first support and a second support arranged at an interval with the first support, the variable frequency motor 2, the electromagnetic control valve 6, the flow rate temperature pressure sensor 5, the torque and rotation speed sensor 3, the first temperature pressure sensor, the second temperature pressure sensor, the third temperature pressure sensor 11, the flow meter 17 and the electronic control throttle valve 16 are all arranged on the first support, and the hydraulic pump 4, the LNG pump 7, the hydraulic oil radiator 14, the hydraulic oil tank 15, the liquid nitrogen storage tank 10, the pump pool 8 and the buffer tank 12 are all arranged on the second support. The electric control part and the non-electric control part are separated, and the safety of the test device adopting the high-pressure fuel gas supply system is improved.
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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed 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 relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. A test device for a high-pressure gas supply system, comprising:
the LNG pump comprises a hydraulic pump (4), an LNG pump (7), a hydraulic oil radiator (14), a hydraulic oil tank (15) and an electromagnetic control valve (6), wherein the electromagnetic control valve (6) is used for selectively enabling one of an oil inlet and an oil outlet of the LNG pump (7) to be communicated with an oil outlet of the hydraulic pump (4), the other one of the oil inlet and the oil outlet of the LNG pump (7) to be communicated with the hydraulic oil tank (15) through the hydraulic oil radiator (14), the oil inlet and the oil outlet of the LNG pump (7) are respectively provided with a first temperature pressure sensor, the oil inlet and the oil outlet of the hydraulic oil radiator (14) are respectively provided with a second temperature pressure sensor, and the opening degree of the electromagnetic control valve (6) is adjustable;
the variable frequency motor (2) is used for driving the hydraulic pump (4) to rotate;
the device comprises a liquid nitrogen storage tank (10), a pump pool (8) and a buffer tank (12), wherein the liquid nitrogen storage tank (10) is used for storing liquid nitrogen, the liquid nitrogen storage tank (10) is communicated with a liquid nitrogen inlet of the pump pool (8) through a low-temperature cut-off valve (9), a gas outlet of the pump pool (8) is communicated with a gas inlet of the buffer tank (12), the buffer tank (12) is connected with a gas outlet pipeline, a back pressure valve (18), a flow meter (17) and an electric control throttle valve (16) are arranged on the gas outlet pipeline, and an LNG pump (7) is used for pressurizing and vaporizing the liquid nitrogen in the pump pool (8);
the flow rate temperature pressure sensor (5) is used for detecting the oil temperature, the pressure and the flow rate of an oil outlet of the hydraulic pump (4);
the torque and rotating speed sensor (3) is used for detecting the rotating speed and the torque of the variable frequency motor (2);
a third temperature and pressure sensor (11) for measuring the temperature and pressure of the nitrogen entering the buffer tank (12) through the pump sump (8);
first support and rather than the second support that the interval set up, inverter motor (2), solenoid electric valve (6), flow temperature pressure sensor (5), torque speed sensor (3), first temperature pressure sensor, second temperature pressure sensor, third temperature pressure sensor (11), flowmeter (17) and automatically controlled choke valve (16) are all located on the first support, hydraulic pump (4), LNG pump (7), hydraulic oil radiator (14), hydraulic tank (15), liquid nitrogen storage tank (10), pump sump (8) and buffer tank (12) are all located on the second support.
2. Testing device for a high-pressure gas supply system according to claim 1, characterized in that a level sensor is arranged in the pump sump (8).
3. The test apparatus for a high-pressure gas supply system according to claim 1, wherein the liquid nitrogen storage tank (10) communicates with a liquid nitrogen inlet of the pump sump (8) through a cryogenic pipe, and the cryogenic cut-off valve (9) is provided on the cryogenic pipe.
4. The testing device for a high-pressure gas supply system according to claim 3, wherein the low-temperature pipe is provided with a first check valve.
5. The test device of a high-pressure gas supply system according to any one of claims 1 to 4, wherein the solenoid control valve (6) is a two-position four-way solenoid directional valve.
6. The test device of the high-pressure gas supply system according to any one of claims 1 to 4, wherein the hydraulic oil tank (15) is communicated with an oil inlet of the hydraulic pump (4) through an oil inlet pipeline, and a filter is arranged on the oil inlet pipeline.
7. Testing device of a high-pressure gas supply system according to any of claims 1 to 4, characterized in that the electronically controlled throttle valve (16) is a proportional solenoid valve.
8. Testing device of a high-pressure gas supply system according to any of the claims 1 to 4, characterized in that the LNG pump (7) is a plunger pump.
9. Testing device of a high-pressure gas supply system according to any of claims 1 to 4, characterized in that said flow temperature pressure sensor (5) is provided between said solenoid-operated valve (6) and the oil outlet of said hydraulic pump (4).
10. The test device of the high-pressure gas supply system according to any one of claims 1 to 4, wherein the outlet of the pump tank (8) is communicated with the inlet of the buffer tank (12) through a second check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120079742.3U CN215261852U (en) | 2021-01-12 | 2021-01-12 | A test device for high pressure gas supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120079742.3U CN215261852U (en) | 2021-01-12 | 2021-01-12 | A test device for high pressure gas supply system |
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| Publication Number | Publication Date |
|---|---|
| CN215261852U true CN215261852U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120079742.3U Expired - Fee Related CN215261852U (en) | 2021-01-12 | 2021-01-12 | A test device for high pressure gas supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095452A (en) * | 2022-07-04 | 2022-09-23 | 中国船舶重工集团柴油机有限公司 | Gas supply system of gas engine test bed and control method |
-
2021
- 2021-01-12 CN CN202120079742.3U patent/CN215261852U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095452A (en) * | 2022-07-04 | 2022-09-23 | 中国船舶重工集团柴油机有限公司 | Gas supply system of gas engine test bed and control method |
| CN115095452B (en) * | 2022-07-04 | 2023-08-01 | 中船发动机有限公司 | Gas supply system of gas engine test bed and control method |
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Granted publication date: 20211221 |