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Rapid charging and pre-cooling system and using method thereof

A pre-cooling and fast technology, applied in the direction of control/regulation system, simultaneous control of multiple variables, instruments, etc., can solve the problems of no reference value and poor universality, and achieve the goal of preventing gas backflow, saving resources and protecting the environment Effect

Active Publication Date: 2021-08-31
HEFEI GENERAL MACHINERY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the actual fast charging process of hydrogen storage cylinders is affected by the specific hydrogenation system settings and the structural size of the gas cylinders, the existing fast charging temperature rise analysis results are not universally applicable and do not have a strong reference value
In the published patents, most of the fatigue performance tests of high-pressure hydrogen storage cylinders are carried out on hydraulic testing machines, and the test data obtained are quite different from the real working conditions of hydrogen medium; while the gas cylinder test system based on real hydrogen medium In the patent, there is a lack of a hierarchical pre-cooling system that can quickly and accurately adjust the hydrogen temperature at the inlet of the test cylinder during the rapid hydrogen charging process for variable temperature and variable flow conditions

Method used

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  • Rapid charging and pre-cooling system and using method thereof
  • Rapid charging and pre-cooling system and using method thereof
  • Rapid charging and pre-cooling system and using method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] like figure 1 As shown, the rapid inflation and precooling system includes an inflation subsystem, N temperature control subsystems, a vacuum subsystem, and a safe venting subsystem. The vacuum subsystem is arranged at one of the end pipelines of the inflation subsystem. On the fork, the safety venting subsystem is arranged on another fork of the end pipeline of the inflation subsystem. A heat exchange device corresponding to the N temperature control subsystems is provided on the pipeline of the inflation subsystem, and the heat exchange device is in the form of a sleeve. In this embodiment, there are two control temperature control subsystems, namely the first control subsystem 27 and the second temperature control subsystem, that is, the heat exchange device includes the first control subsystem 27 and the second temperature control subsystem corresponding to the first heat exchange device 5 and the second heat exchange device 7 respectively. The system takes charging...

Embodiment 2

[0091] Use the method for fast charging and precooling system in embodiment 1, may further comprise the steps:

[0092] S1. Before the experiment, the vacuum pump 22 and the vacuum control valve 23 are controlled by the control subsystem 27 to perform circular gas replacement for the inflation subsystem and the safety vent subsystem until the gas purity requirements are met.

[0093] S2. Open the valve group in the inflation subsystem, fill the test gas cylinder with gas, and the control subsystem 27 obtains the first flow meter 2, the first temperature sensor 4, and a plurality of second temperature sensors set on the pipeline of the inflation subsystem 6. The corresponding output electrical signal of the pressure sensor 9 .

[0094] S3. Select different refrigeration effects, control the work of different working devices, and iteratively learn the controller ILC 0 The temperature reference signal is output to the subtractor S in the corresponding open working device, and th...

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Abstract

The invention relates to a rapid inflation pre-cooling system and a method for using the same. The system includes an inflation subsystem and N temperature control subsystems, and the pipelines of the inflation subsystem are provided with heat exchanges corresponding to the N temperature control subsystems one-to-one. The pipeline is also provided with a valve group, a first flow meter, a sensor, and a test gas cylinder is connected to the end of the pipeline; each temperature control subsystem includes a working device that forms a loop with the corresponding heat exchange device, The working control valve and several flowmeters are arranged on the loop, and the system also includes a control subsystem respectively connected with the valve group, the first flowmeter, the sensor, the working device, the working control valve, and the controlled end of the flowmeter. The cooling capacity of the temperature control subsystem corresponding to the multiple heat exchange devices on the pipeline of the gas charging subsystem is gradually enhanced according to the flow direction of the gas. The advantages of the invention lie in that it realizes the staged precooling for fast and accurate adjustment of the gas temperature at the inlet of the test gas cylinder, and the flow rate of the gas is controlled by the valve group on the inflation subsystem.

Description

technical field [0001] The invention relates to the field of precooling test, in particular to a rapid air charging precooling system and its application method. Background technique [0002] Composite material gas storage cylinders have the advantages of high pressure bearing and light weight, and are more and more widely used in existing high-pressure gas storage technologies, and have become the mainstream of research and development and application. Due to the high working pressure of the composite material gas cylinder and its easy to be affected by temperature, the working medium is usually flammable and explosive. When the gas cylinder is damaged during the rapid inflation process and the safety performance decreases, leakage and explosion accidents are very likely to occur; therefore, its safe service Performance is the research direction that focuses on. Taking hydrogen as an example, in order to meet market demand, hydrogen storage cylinders need to quickly raise ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/60G05D27/02
CPCG01N3/60G01N2203/0228G05D27/02
Inventor 郭晓璐陈学东范志超徐鹏刘孝亮
Owner HEFEI GENERAL MACHINERY RES INST