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Online flow deviation detection method for hydrogen mass flow meter of hydrogen refueling station

A mass flowmeter and deviation detection technology, applied in the direction of indirect mass flowmeters, mass flow measurement devices, etc., can solve the problems of flowmeter measurement deviation and achieve the effect of stable and reliable data

Pending Publication Date: 2022-06-28
液空厚普氢能源装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to: address the above problems, to provide a hydrogenation station hydrogen mass flowmeter online flow deviation detection method, to solve the hydrogen mass flowmeter in the prior art in actual use, due to temperature, pressure, flow and Factors such as operating conditions lead to frequent deviations in flowmeter measurement

Method used

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  • Online flow deviation detection method for hydrogen mass flow meter of hydrogen refueling station

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Hydrogen refueling stations usually use hydrogen mass flow meters in two locations. The first location is in the unloading column unit. The flow deviation of this flowmeter can be detected and calculated by comparing the hydrogen unloading volume in the same unit time with the long-tube trailer. Analysis; the hydrogen flowmeter in the second position is in the hydrogenation unit, and the flow deviation of this flowmeter can be compared with the hydrogen quality change of the medium-pressure hydrogen storage tank or the vehicle-mounted hydrogen storage cylinder group, and the deviation of the flowmeter can be detected and analyzed. .

[0050] The present embodiment discloses an online flow deviation detection method of a hydrogen mass flowmeter in a hydrogen refueling station,

[0051] Specifically include the following steps:

[0052] For the deviation detection method of the hydrogen flowmeter of the unloading column unit:

[0053] The tube bundle car starts to fill ...

Embodiment 2

[0059] This embodiment provides a method for detecting the deviation of the hydrogen mass flowmeter of the hydrogenation machine unit, wherein the hydrogenation machine can be divided into: single-gun single-metering, double-gun single-metering, and double-gun dual-metering according to the number of hydrogenation guns and different measurement methods. Metering; single-gun single-metering and double-gun single-metering are single-gun filling, and the corresponding flowmeter simultaneously measures the filling amount of the gun; double-gun dual-metering means that two guns can be filled at the same time, and the flow of each gun passes through separately The respective flowmeters are metered.

[0060] The testing steps for single-gun single-metering and dual-gun single-metering hydrogenation machine flowmeters are as follows:

[0061] precondition:

[0062] The system confirms that the unloading column stops running, and HV0111 is closed;

[0063] The compressor is not filli...

Embodiment 3

[0071] In the detection of single-gun single-metering and double-gun single-metering hydrogenation machine flowmeters, the deviation detection of the mass flowmeter can also be carried out through the filling amount of the vehicle-mounted hydrogen storage bottle;

[0072] That is, when the on-board hydrogen storage bottle starts to fill the vehicle with hydrogen, the control system automatically records the time as t. 1 , and automatically read C0 of all medium-pressure hydrogen storage cylinder groups at this moment 1 , C0 2 , C0 3 The temperature and pressure of ... are calculated by the temperature, pressure and compression factor (compression factor data is input into the PLC system in advance), and the PLC system automatically calculates the t 1 The mass of hydrogen at time is M d1 ;At the same time, the PLC will also read the flowmeter in the vehicle-mounted hydrogen storage bottle at t 1 Cumulative value M of hydrogen flow at time d11 ;

[0073] After filling one ...

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Abstract

According to the online flow deviation detection method for the hydrogen mass flow meter of the hydrogen refueling station, the deviation of the hydrogen mass flow meter can be efficiently, rapidly, timely and effectively detected through the module, and a user is reminded to check the flow meter in time; the module can detect the deviation of the flowmeter on line in real time, and can also be activated and detected regularly according to needs. Specifically, the invention relates to a method for real-time online detection of flowmeter deviation, which comprises the following steps: calculating hydrogen flow according to the structural volume (water volume) of a hydrogen storage bottle group and the pressure, temperature and compression factor at the beginning and ending of gas discharge, and comparing the hydrogen flow with the hydrogen flow cumulant of the flowmeter in the same time period; the deviation of flow metering can be found in time, and calibration is carried out.

Description

technical field [0001] The invention relates to the field of LNG marine filling, in particular to an online flow deviation detection method of a hydrogen mass flowmeter in a hydrogenation station. Background technique [0002] Hydrogen refueling stations can adopt different hydrogen metering methods according to different hydrogen sources and delivery methods. At present, there are two main hydrogen metering methods for hydrogen refueling stations at home and abroad: [0003] First, when the hydrogen long-tube trailer and hydrogen tube bundle container are used for transportation, the hydrogen flow rate is calculated by the structural volume (water volume) of the long-tube gas storage cylinder and the pressure, temperature and compression factor at the beginning and end of unloading; [0004] The second is to use the mass flow meter installed on the hydrogen pipeline to measure the hydrogen consumption more accurately. [0005] For the gas volume flowmeter, the volume flow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/86
CPCG01F1/86
Inventor 许慎启陈丽娟唐伦江张杰王波龚玺代丰刘兴
Owner 液空厚普氢能源装备有限公司
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