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Air entraining system for high-pressure hydrogenation stations

A high-pressure hydrogen and hydrogen refueling station technology, applied in the field of refueling systems, can solve the problems of inconvenient hydrogen collection samples, and achieve the effects of simple structure, improved gas extraction rate, and easy sampling operation

Active Publication Date: 2009-04-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a gas refueling system that can be used in high-pressure hydrogen refueling stations, which can safely and easily collect hydrogen samples from hydrogen refueling stations and refill high-pressure hydrogen for fuel cell vehicles on the hydrogen refueling machine, so as to overcome the existing Inconvenient hydrogen gas collection sample by gas machine

Method used

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  • Air entraining system for high-pressure hydrogenation stations

Examples

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Effect test

Embodiment 1

[0030] Example 1 Sampling operation: turn on the power of the controller 34 and select the sampling mode. If you need to take a sample of the hydrogen in the high-pressure hydrogen storage bottle, turn on the solenoid valve 5. Driven by the low-pressure nitrogen, the pneumatic valve 1 opens. The high-pressure hydrogen flows through the pneumatic valve 1, through the filter 33, and reaches the pressure regulating valve 20. Connect joints 29 and 30, open needle valves 12 and 13, close pressure regulating valve 21, slowly open pressure regulating valve 20 until the sampling bottle has positive pressure, slowly open pressure regulating valve 21, purge the sampling bottle with sample hydrogen, and then close the needle Valve 13, pressure regulating valve 21, increase the outlet pressure of pressure regulating valve 20 until the inlet pressure of pressure regulating valve 21 reaches the required pressure for sampling, then close pressure regulating valve 20, needle valve 12, and solenoi...

Embodiment 2

[0031] Embodiment 2 Filling operation: turn on the power of the controller 34, select the filling mode, determine the relevant parameters, such as the filling quality or the pressure of the on-board hydrogen cylinder as the filling end point, the rate point at which the three-stage hydrogen storage bottle switches mutually, Whether there is communication with the vehicle to be filled when filling, etc. After setting the parameters, open the solenoid valve 8. Driven by the low pressure nitrogen, the pneumatic valve 4 opens and enters the state of preparation for filling. Insert the hydrogenation gun 27 into the gas receiving head of the vehicle 41 to be charged, turn on the hydrogenation gun switch, and give a hydrogenation instruction. The controller 34 will open the solenoid valve 7 and open the pneumatic valve 3 for a few seconds according to the preset program, and then close the solenoid valve 7 and the pneumatic valve 3. The controller 34 calculates according to the quality, ...

Embodiment 3

[0032] Embodiment 3 Control of the filling rate: When filling, the hydrogen filling system is not connected to the vehicle-mounted hydrogen bottle to be filled with a communication interface, during the filling process, the controller 34 will intermittently shut down or shut down according to a preset program. The instruction to open the solenoid valve 8 and the pneumatic valve 4, that is, when the solenoid valve 8 and the pneumatic valve 4 are closed, the controller 34 calculates the actual pressure of the filled hydrogen cylinder and the mass of the hydrogen gas measured by the mass flow meter 23 The actual temperature in the hydrogen outlet bottle is compared with the allowable temperature curve set by the program. If the actual temperature is close to the allowable temperature, the solenoid valve 8 and pneumatic valve 4 are closed; if the actual temperature is lower than the allowable temperature, the solenoid valve 8, pneumatic Valve 4 opens. Through the opening and closing o...

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Abstract

The invention relates to a gas filling system for a high-pressure hydrogen filling station, which comprises a control system, a sampling system, a filling system, an alarm system and a nitrogen purging system, and is the gas filling system which can collect hydrogen sample of the hydrogen filling station and fill high-pressure hydrogen for fuel cell powered vehicles. The gas filling system has the functions of temperature automatic compensation of filling measurement, selectable gas taking procedure in three-stage order, reasonable control of filling rate, alarm of hydrogen leakage and automatic power-down, pulling out prevention and automatic static release in the filling process, overpressure protection of the system, and so on. The sampling points are designed at the tail end of the whole flow of the hydrogen filling station, so that the acquired hydrogen sample can have more representativeness in quality; and through the design of pressure regulation treatment on the high-pressure hydrogen for sampling, the sampling operation is more simple, convenient and quick, and a regular gas sampling steel bottle can also be used together, thereby the sampling cost is low. The gas filling system can improve the gas taking rate of the hydrogen filling station and ensure that the temperature rise of a filled vehicle hydrogen storage tank is strictly controlled within the required temperature range in the quick hydrogen filling process.

Description

Technical field [0001] The invention belongs to the field of energy facilities, and relates to the field of hydrogen energy infrastructure, in particular to a gas dispenser used in a hydrogen refueling station, which can collect hydrogen samples from the hydrogen refueling station and a gas refueling system for filling fuel cell vehicles with high-pressure hydrogen. Background technique [0002] The huge benefits to energy and the environment brought about by the application of hydrogen energy in the transportation and transportation fields have been recognized by all countries in the world. Developed countries such as Europe, America and Japan have given special support in policies, regulations, and funds, and formulated detailed timetables for the development of fuel cell vehicles and key components, hydrogen infrastructure, and related standards, in an effort to speed up and promote fuel cell vehicles. Commercialization process. With the increasing maturity of fuel cell vehicl...

Claims

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Application Information

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IPC IPC(8): F17C5/04
CPCY02E60/321Y02E60/32
Inventor 马建新周伟潘相敏张存满邬敏忠陈华强
Owner TONGJI UNIV
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