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CN-224214270-U - Hydrogen supply system for hydrogen internal combustion engine laboratory

CN224214270UCN 224214270 UCN224214270 UCN 224214270UCN-224214270-U

Abstract

The utility model discloses a hydrogen supply system of a hydrogen internal combustion engine laboratory, which relates to the technical field of hydrogen supply systems, and comprises an air inlet pipeline, a low-pressure pipeline, a high-pressure pipeline, an electromagnetic valve, a first flowmeter, a second flowmeter, a first electric control valve and a second electric control valve, wherein the low-pressure pipeline and the high-pressure pipeline are arranged in parallel, the low-pressure pipeline and the high-pressure pipeline are provided with a common air inlet end and are communicated with an air outlet end of the air inlet pipeline, the low-pressure pipeline and the high-pressure pipeline are provided with a common air outlet end and are used for being communicated with an engine, the electromagnetic valve is arranged on the air inlet pipeline and is used for controlling the on-off of hydrogen supply to the low-pressure pipeline and the high-pressure pipeline which are connected in parallel, the first flowmeter and the first electric control valve are arranged on the low-pressure pipeline, the second flowmeter and the second electric control valve are arranged on the high-pressure pipeline, and the first electric control valve and the second electric control valve are used for adjusting air inflow. The utility model has large pressure regulating range, is convenient for the selection and the adaptation of the flowmeter and the electric control valve, and improves the measurement and control precision.

Inventors

  • REN ZHIYUAN
  • JIA JIANRONG

Assignees

  • 北京氢合氢诚动力科技发展合伙企业(有限合伙)

Dates

Publication Date
20260508
Application Date
20250714

Claims (10)

  1. 1. The hydrogen supply system of the hydrogen internal combustion engine laboratory is characterized by comprising an air inlet pipeline, a low-pressure pipeline, a high-pressure pipeline, an electromagnetic valve, a first flowmeter, a second flowmeter, a first electric control valve and a second electric control valve; The air inlet end of the air inlet pipeline is used for communicating with a hydrogen tube bundle vehicle; The low-pressure pipeline and the high-pressure pipeline are arranged in parallel, the low-pressure pipeline and the high-pressure pipeline are provided with a common air inlet end and are communicated with an air outlet end of the air inlet pipeline, and the low-pressure pipeline and the high-pressure pipeline are provided with a common air outlet end and are used for communicating with an engine; The electromagnetic valve is arranged on the air inlet pipeline and used for controlling the on-off of hydrogen supply to the low-pressure pipeline and the high-pressure pipeline which are connected in parallel; The low-pressure pipeline is provided with a first flowmeter and a first electric control valve, the high-pressure pipeline is provided with a second flowmeter and a second electric control valve, and the first electric control valve and the second electric control valve are used for adjusting air inflow.
  2. 2. The hydrogen internal combustion engine laboratory hydrogen supply system according to claim 1, further comprising a pressure gauge and an intermediate line; the low-pressure pipeline comprises a first pipeline and a second pipeline, the high-pressure pipeline comprises a third pipeline and a fourth pipeline, the first pipeline and the third pipeline are arranged in parallel, and the second pipeline and the fourth pipeline are arranged in parallel; One end of the first pipeline and one end of the third pipeline are communicated to form the common air inlet end, and the other end of the first pipeline and the other end of the third pipeline are communicated and communicated with one end of the middle pipeline; one end of the second pipeline is communicated with one end of the fourth pipeline and is communicated with the other end of the middle pipeline, and the other ends of the second pipeline and the fourth pipeline are communicated to form the common air outlet end; The first pipeline is provided with the first flowmeter, the second pipeline is provided with the first electric control valve, the third pipeline is provided with the second flowmeter, and the fourth pipeline is provided with the second electric control valve.
  3. 3. The hydrogen internal combustion engine laboratory hydrogen supply system of claim 2, further comprising a nitrogen purge line, a first valve, and a first check valve; One end of the nitrogen purging pipeline is used for being communicated with a nitrogen bottle, the other end of the nitrogen purging pipeline is communicated with the air inlet pipeline, and the nitrogen purging pipeline is provided with a first valve and a first one-way valve.
  4. 4. The hydrogen supply system of claim 2, further comprising a pressure relief line, a safety valve, a first blow-down tube, and a second valve; The pressure relief pipelines are provided with three pressure relief pipelines and are correspondingly communicated with the air inlet pipeline, the second pipeline and the fourth pipeline respectively; one end of the pressure relief pipeline is provided with the first blow-down pipe, and the pressure relief pipeline is provided with the relief valve and the second valve.
  5. 5. The hydrogen internal combustion engine laboratory hydrogen supply system according to claim 3, further comprising a purge gas exhaust line, a second purge pipe, and a third valve; The purging gas discharge pipelines are provided with four pipelines which are correspondingly communicated with two sides of the joint of the second pipeline, the fourth pipeline and the gas inlet pipeline with the nitrogen purging pipeline respectively; One end of the purge gas exhaust pipeline is provided with the second blow-down pipe, and the purge gas exhaust pipeline is provided with the third valve.
  6. 6. The hydrogen internal combustion engine laboratory hydrogen supply system according to claim 2, further comprising a temperature sensor, a pressure sensor, a fourth valve, a fifth valve, a sixth valve, and a seventh valve; The second pipeline is provided with two fourth valves, and the pipeline between the two fourth valves is provided with the temperature sensor, the pressure sensor and the first electric control valve; The fourth pipeline is provided with two fifth valves, and a pipeline between the two fifth valves is provided with the temperature sensor, the pressure sensor and the second electric control valve; The first pipeline is provided with the sixth valves on the pipelines on two sides of the first flowmeter respectively, and the third pipeline is provided with the seventh valves on the pipelines on two sides of the second flowmeter respectively.
  7. 7. The hydrogen internal combustion engine laboratory hydrogen supply system according to claim 3, further comprising a second check valve and an eighth valve; The eighth valve and the second one-way valve are arranged on a pipeline from the joint of the air inlet pipeline and the nitrogen purging pipeline to the air inlet end of the air inlet pipeline.
  8. 8. The hydrogen internal combustion engine laboratory hydrogen supply system according to claim 3, further comprising a filter, a manual pressure regulating valve, a ninth valve, and a tenth valve; The filter and the manual pressure regulating valve are arranged on a pipeline from the joint of the air inlet pipeline and the nitrogen purging pipeline to the position between the electromagnetic valves; The ninth valve is arranged on a pipeline between the filter and the manual pressure regulating valve, and the manual pressure regulating valve is connected with the tenth valve in parallel.
  9. 9. The hydrogen supply system for a hydrogen internal combustion engine laboratory according to claim 1, wherein the pipeline pressure of the low-pressure pipeline is 10MPa or less, and the pipeline pressure of the high-pressure pipeline is in a range of 10MPa to 20MPa.
  10. 10. The hydrogen supply system of claim 2, wherein the intake line, the low pressure line, and the high pressure line are each made of 316 stainless steel.

Description

Hydrogen supply system for hydrogen internal combustion engine laboratory Technical Field The utility model relates to the technical field of hydrogen supply systems, in particular to a hydrogen supply system for a hydrogen internal combustion engine laboratory. Background With the global increasing demand for clean energy, the hydrogen energy industry has grown rapidly. As one of the important directions of hydrogen energy application, hydrogen internal combustion engines have received extensive attention in testing and research, which has also prompted continuous exploration and refinement of hydrogen supply systems associated therewith. The current flowmeter and the electronic control valve used in the hydrogen internal combustion engine test are limited in application range, and data distortion and equipment damage can be caused by out-of-range application. In view of the foregoing problems with the prior art, there is a need in the art for a hydrogen internal combustion engine laboratory hydrogen supply system. Disclosure of utility model The utility model aims to provide a hydrogen supply system of a hydrogen internal combustion engine laboratory, which solves the problems of the prior art, has a large pressure regulating range, is convenient for the selection and the adaptation of a flowmeter and an electric control valve, and improves the measurement and control precision. In order to achieve the above object, the present utility model provides the following solutions: The utility model provides a hydrogen supply system of a hydrogen internal combustion engine laboratory, which comprises an air inlet pipeline, a low-pressure pipeline, a high-pressure pipeline, an electromagnetic valve, a first flowmeter, a second flowmeter, a first electric control valve and a second electric control valve, wherein the air inlet end of the air inlet pipeline is used for being communicated with a hydrogen tube bundle vehicle, the low-pressure pipeline is arranged in parallel with the high-pressure pipeline, the low-pressure pipeline and the high-pressure pipeline are provided with a common air inlet end and are communicated with the air outlet end of the air inlet pipeline, the low-pressure pipeline and the high-pressure pipeline are provided with a common air outlet end and are used for being communicated with an engine, the electromagnetic valve is arranged on the air inlet pipeline and is used for controlling the on-off of hydrogen supply to the low-pressure pipeline and the high-pressure pipeline which are connected in parallel, the first flowmeter and the first electric control valve are arranged on the low-pressure pipeline, the second flowmeter and the second electric control valve are arranged on the high-pressure pipeline, and the first electric control valve and the second electric control valve are used for adjusting air inflow. In some embodiments, the system further comprises a pressure gauge and an intermediate pipeline, the low-pressure pipeline comprises a first pipeline and a second pipeline, the high-pressure pipeline comprises a third pipeline and a fourth pipeline, the first pipeline is arranged in parallel with the third pipeline, the second pipeline is arranged in parallel with the fourth pipeline, one ends of the first pipeline and the third pipeline are communicated to form a common air inlet end, the other ends of the first pipeline and the third pipeline are communicated with one end of the intermediate pipeline, one ends of the second pipeline and the fourth pipeline are communicated with one end of the intermediate pipeline and the other end of the fourth pipeline is communicated with the other end of the intermediate pipeline, the other ends of the second pipeline and the fourth pipeline are communicated to form a common air outlet end, the pressure gauge is arranged on the intermediate pipeline, the first flowmeter is arranged on the first pipeline, the first electric control valve is arranged on the second pipeline, the second electric control valve is arranged on the third pipeline, and the second electric control valve is arranged on the fourth pipeline. In some embodiments, the nitrogen gas purging device further comprises a nitrogen gas purging pipeline, a first valve and a first one-way valve, wherein one end of the nitrogen gas purging pipeline is used for communicating a nitrogen gas bottle, the other end of the nitrogen gas purging pipeline is communicated with the air inlet pipeline, and the first valve and the first one-way valve are arranged on the nitrogen gas purging pipeline. In some embodiments, the system further comprises a pressure relief pipeline, a safety valve, a first blow-down pipe and a second valve, wherein the pressure relief pipeline is provided with three pipelines and is correspondingly communicated with the air inlet pipeline, the second pipeline and the fourth pipeline respectively, one end of the pressure relief pipeline is provided with the first blow-do