CN115218114B - Pressure monitoring device and method for vehicle-mounted carbon fiber hydrogen storage bottle - Google Patents

Pressure monitoring device and method for vehicle-mounted carbon fiber hydrogen storage bottle Download PDF

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Publication number
CN115218114B
CN115218114B CN202210812950.9A CN202210812950A CN115218114B CN 115218114 B CN115218114 B CN 115218114B CN 202210812950 A CN202210812950 A CN 202210812950A CN 115218114 B CN115218114 B CN 115218114B
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China
Prior art keywords
signal
strain
pressure
carbon fiber
gas cylinder
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CN115218114A (en
Inventor
狄成瑞
朱波
李林才
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Shandong Fengjin New Energy Technology Co ltd
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Shandong Fengjin New Energy Technology Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/02Special adaptations of indicating, measuring, or monitoring equipment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/02Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/32Hydrogen storage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The application provides a pressure monitoring device and a monitoring method of a vehicle-mounted carbon fiber hydrogen storage bottle, comprising the following steps: the device comprises a signal processing integrated module, a strain sensing device and a signal wire; the strain sensing device is used for generating a strain signal; the signal line is used for transmitting the strain signal to the signal processing integrated module; the signal processing integrated module is used for processing the strain signal, converting the strain signal into a pressure signal and completing pressure monitoring of the vehicle-mounted carbon fiber hydrogen storage bottle. According to the application, the stress strain sensing sheet is distributed on the surface of the gas cylinder, the strain signal is collected to the signal processing integrated module, and the signal processing integrated module analyzes the pressure signal according to the corresponding relation between the strain and the pressure and reflects the signal to the display, so that the stress state of the gas cylinder can be monitored in real time, the health state of the gas cylinder can be mastered, and the use safety of the gas cylinder can be improved.

Description

Pressure monitoring device and method for vehicle-mounted carbon fiber hydrogen storage bottle
Technical Field
The application belongs to the technical field of pressure monitoring of gas cylinders, and particularly relates to a pressure monitoring device and a pressure monitoring method of a vehicle-mounted carbon fiber hydrogen storage cylinder.
Background
Along with the popularization of clean energy, the hydrogen energy automobile is applied to the mature state of developed countries, and research work of the hydrogen energy automobile is actively carried out in China. In a hydrogen energy automobile, a carbon fiber hydrogen storage bottle is adopted as a hydrogen storage container, and one of the difficulties in preventing the popularization and the application of the hydrogen energy automobile is the safety of the carbon fiber hydrogen storage bottle. Although the national regulations related to the discharge of the gas cylinder are used for monitoring the safety performance of the gas cylinder, the real-time monitoring of the gas cylinder is lacking in practical application, particularly the vehicle-mounted hydrogen storage gas cylinder is generally positioned in the vehicle body, and the actual running state of the vehicle-mounted hydrogen storage gas cylinder is not easy to observe, so that the timely overhaul of the hydrogen storage gas cylinder is influenced, and the potential safety hazard is increased; on the other hand, the conventional pressure monitoring mode adopts a pressure gauge to monitor the pressure of the gas cylinder, but the pressure gauge only detects the pressure of the gas inside the gas cylinder, the real stress strain condition of the gas cylinder is not reflected, and the deformation of the gas cylinder is the direct cause of the gas cylinder fracture failure, so that a pressure monitoring device and a pressure monitoring method for directly detecting the strain of the gas cylinder are needed, and the problems are solved.
Disclosure of Invention
In order to solve the technical problems, the application provides a pressure monitoring device and a monitoring method for a vehicle-mounted carbon fiber hydrogen storage bottle, wherein a stress strain sensor is arranged on the surface of the bottle, a strain signal is collected to a signal processing integrated module, and the signal processing integrated module analyzes the pressure signal according to the corresponding relation between the strain and the pressure and reflects the signal to a display, so that the stress state of the bottle can be monitored in real time, the health state of the bottle can be mastered, and the use safety of the bottle can be improved.
In order to achieve the above object, the present application provides a pressure monitoring device for a vehicle-mounted carbon fiber hydrogen storage bottle, comprising:
the device comprises a signal processing integrated module, a strain sensing device and a signal wire;
the strain sensing device is adhered to the carbon fiber surface layer of the gas cylinder, and the signal wire is respectively connected with the signal processing integrated module and the strain sensing device on the lower surface of the protective layer;
the strain sensing device is used for generating a strain signal;
the signal line is used for transmitting the strain signal to the signal processing integrated module;
the signal processing integrated module is used for processing the strain signal, converting the strain signal into a pressure signal and completing pressure monitoring of the vehicle-mounted carbon fiber hydrogen storage bottle.
Optionally, the signal processing integration module includes: a signal acquisition processing device and a signal display device;
the signal acquisition processing device is connected with the signal display device through the signal line;
the signal acquisition and processing device is used for analyzing the strain signal into a pressure signal;
the signal display device is used for receiving the pressure signal and displaying the pressure signal.
Optionally, the signal acquisition and processing device includes: the system comprises a data acquisition and analysis unit, a battery unit and a signal connecting wire;
the data acquisition and analysis unit is connected with the battery unit through the signal connecting wire;
the data acquisition and analysis unit is used for acquiring the strain signal and processing the strain signal;
the battery unit is used for supplying power to the data acquisition and analysis unit.
Optionally, the data acquisition and analysis unit comprises a parameter setting subunit, a data acquisition subunit, a data storage subunit and a data analysis subunit;
the parameter setting subunit is used for parameter setting;
the data acquisition subunit is used for acquiring the strain signals;
the data analysis subunit is used for analyzing and processing the acquired strain signals based on the set parameters and converting the acquired strain signals into pressure signals;
the data storage subunit is configured to store the pressure signal.
Optionally, the battery unit is composed of one or more of a dry battery, a lead storage battery, a lithium battery and a solar battery.
Optionally, the signal display device comprises a pressure dial, a pressure partition plate, an alarm indicator light and a strain position display meter;
the pressure dial is used for displaying the magnitude of the pressure signal;
the pressure partition plate is used for displaying the pressure range of the pressure signal;
the alarm indicator lamp is used for alarming abnormal pressure;
the strain position display table is used for displaying specific positions of strain.
Optionally, the strain sensing device is composed of one or two of a resistive strain gauge and an optical strain gauge.
In order to achieve the above purpose, the present application provides a pressure monitoring method for a vehicle-mounted carbon fiber hydrogen storage bottle, comprising the following steps:
obtaining a strain signal;
and processing the strain signal, converting the strain signal into a pressure signal, and completing the pressure monitoring of the vehicle-mounted carbon fiber hydrogen storage bottle.
Compared with the prior art, the application has the following advantages and technical effects:
the application provides a pressure monitoring device and a monitoring method of a vehicle-mounted carbon fiber hydrogen storage bottle, which can monitor the strain of the bottle body in real time through a strain sensing device, and analyze signals into display data which are easy to observe, such as a pressure value, a pressure range, a maximum strain distribution area and the like through a data processing module according to the corresponding relation between the pressure of the bottle body and the strain of the bottle body. The method is beneficial to a gas cylinder user to monitor the health state of the gas cylinder on line in real time, accumulate stress strain data of the gas cylinder in the use process and provide data support for optimization of gas cylinder design and developers.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 is a schematic structural diagram of a pressure monitoring device of a vehicle-mounted carbon fiber hydrogen storage bottle according to a first embodiment of the present application;
fig. 2 is a schematic diagram of a signal processing integrated module according to a first embodiment of the application;
fig. 3 is a schematic diagram of a signal acquisition processing device according to a first embodiment of the present application;
FIG. 4 is a schematic diagram of a signal display device according to a first embodiment of the application;
fig. 5 is a schematic diagram showing a correspondence relationship between a filling pressure of a gas cylinder and a strain value generated by a strain sensor according to a first embodiment of the present application.
Description of the drawings: 1-a signal processing integrated module; 2-the carbon fiber surface layer of the gas cylinder; 3-strain sensing means; 4-signal lines; 5-protecting layer; 1-1-a signal acquisition and processing device; 1-2-signal display means; 1-1-01-a data acquisition and analysis unit; 1-1-02-battery cell; 1-1-03-signal connection lines; 1-2-01-pressure dial; 1-2-02-pressure zone plate; 1-2-03-alarm indicator lamp; 1-2-04-strain location display table.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Example 1
As shown in fig. 1, the application provides a pressure monitoring device of a vehicle-mounted carbon fiber hydrogen storage bottle, which mainly comprises a strain sensing device 3, a signal processing integrated module 1 and a signal wire 4;
uniformly bonding the strain sensing device 3 on the carbon fiber surface layer 2 of the gas cylinder according to design requirements, and preferably arranging the strain sensing device at the positions of the straight cylinder section and the cylinder shoulder (the joint of the sealing head and the straight cylinder section); the signal wire 4 of the strain sensing device 3 is led out after being clustered from the bottle mouth or the bottle tail, is connected with the signal processing integrated module 1, and is coated with the protective layer 5 until the strain sensing device 3 is completely covered.
The strain sensing device 3 is used for generating a strain signal;
the signal line 4 is used for transmitting the strain signal to the signal processing integrated module 1;
the signal processing integrated module 1 is used for processing the strain signals, converting the strain signals into pressure signals and completing pressure monitoring of the vehicle-mounted carbon fiber hydrogen storage bottle.
As shown in fig. 2, the signal processing integrated module 1 is composed of a signal acquisition processing device 1-1, a signal display device 1-2 and signal connecting wires therebetween;
the signal acquisition and processing device 1-1 is used for analyzing the strain signal into a pressure signal;
the signal display device 1-2 is used for receiving the pressure signal and displaying the pressure signal.
As shown in fig. 3, the signal acquisition and processing device 1-1 consists of a data acquisition and analysis module 1-1-01, a battery module 1-1-02 and a signal connecting wire 1-1-03;
the data acquisition and analysis unit 1-1-01 is used for acquiring a strain signal and processing the strain signal;
the battery unit 1-1-02 is used for supplying power to the data acquisition and analysis unit 1-1-01.
The data acquisition and analysis unit 1-1-01 comprises a parameter setting subunit, a data acquisition subunit, a data storage subunit and a data analysis subunit;
the parameter setting subunit is used for parameter setting;
the data acquisition subunit is used for acquiring the strain signals;
the data analysis subunit is used for analyzing and processing the acquired strain signals based on the set parameters and converting the acquired strain signals into pressure signals;
the data storage subunit is used for storing the pressure signal.
As shown in FIG. 4, the signal display device 1-2 is composed of a pressure dial 1-2-01, a pressure partition plate 1-2-02, an alarm indicator lamp 1-2-03 and a strain position display table 1-2-04.
The pressure dial 1-2-01 is used for displaying the magnitude of the pressure signal;
the pressure partition plate 1-2-02 is used for displaying the pressure range of the pressure signal;
the alarm indicator lamp 1-2-03 is used for alarming abnormal pressure;
strain location display tables 1-2-04 are used to show specific locations of strain.
The strain sensing device 3 is one or two selected from a resistance strain gauge and an optical strain gauge, the strain sensing device 3 is preferably a resistance strain gauge, the thickness of the strain gauge is not more than 3mm, and the temperature resistance is not less than 100 ℃.
Wherein, optical strain gauge theory of operation: when the strain of the environment where the fiber grating is located is changed, the period of the grating or the refractive index of the fiber core is changed, so that the wavelength of reflected light is changed, and the change condition of the strain can be obtained by measuring the change of the wavelength of reflected light before and after the strain change.
Working principle of the resistance strain gauge:
when the measured part is deformed along the direction of the resistance wire, the resistance wire is deformed (stretched or shortened) together, so that the resistance of the resistance wire is changed (increased or reduced), the change value is in direct proportion to the strain of the surface of the part to which the strain gauge is adhered, and finally, the change condition of the strain quantity can be obtained by measuring the change condition of the electric signal of the strain gauge.
The battery unit 1-1-02 is composed of one or more of a dry battery, a lead storage battery, a lithium battery and a solar battery.
The working principle of the embodiment is as follows: when the gas cylinder is inflated and deflated, the strain sensing device 3 is caused to generate a strain signal by deformation of the gas cylinder body, the strain signal is transmitted to the signal acquisition and processing device 1-1 in the signal processing integrated module 1 through the signal wire 4, the signal is transmitted to the signal display device 1-2 through analysis of the signal acquisition and processing device 1-1, the size of a pressure value in the signal display device 1-2 can be displayed on the pressure dial 1-2-01 through pointer scales, the pressure range is displayed on the pressure partition plate 1-2-02 through pointers and different lamplights, the pressure partition plate is set to be a low-pressure area, the rated working pressure of one half of the pressure partition plate is set to be a medium-pressure area, the rated working pressure of one half of the pressure is set to be a high-pressure area, and the alarm lamps 1-2-03 are respectively lightened in yellow, green and red colors when the gas cylinder pressure is respectively located in the three partitions. The maximum strain value distribution position of the gas cylinder is displayed in a strain position display table 1-2-04 by light, wherein the maximum strain value is the real-time maximum strain of each position of the gas cylinder A, B, C, namely when the gas cylinder is used, if the strain value at the position A exceeds the strain value at the position A when the rated working pressure of the gas cylinder is exceeded, the light of the region A is lightened, and similarly, when the strain value at the position B exceeds the strain value at the position B when the rated working pressure is exceeded, the light of the region B is lightened, and the regions C are similar.
The use state of the gas cylinder and the strain condition of each part can be easily observed through each index displayed by the signal display device 1-2, and the health of the gas cylinder can be monitored in real time.
Wherein, the conversion principle of strain and pressure:
when the gas cylinder is inflated and deflated, the cylinder body is expanded and contracted along with the pressure change of the gas cylinder, so that the strain sensor on the surface of the cylinder body can also generate the change of a strain signal, namely, the corresponding relation exists between the inflation pressure of the gas cylinder and the strain value generated by the strain sensor, as shown in fig. 5.
Therefore, according to the corresponding relation between the two, the empirical formula Y=F (X) or X=F of the certain gas cylinder filling pressure Y and the certain position strain X of the bottle body can be obtained -1 And (Y) according to the empirical formula, editing and designing a signal analysis module in the signal processing integration, so that the strain quantity of the gas cylinder can be converted into a pressure value.
The application also provides a pressure monitoring method of the vehicle-mounted carbon fiber hydrogen storage bottle, which comprises the following steps:
obtaining a strain signal;
and processing the strain signal, converting the strain signal into a pressure signal, and completing the pressure monitoring of the vehicle-mounted carbon fiber hydrogen storage bottle.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (5)

1. The utility model provides a on-vehicle carbon fiber hydrogen storage bottle's pressure monitoring device which characterized in that includes:
the device comprises a signal processing integrated module, a strain sensing device and a signal wire;
the strain sensing device is adhered to the carbon fiber surface layer of the gas cylinder, and the signal wire is respectively connected with the signal processing integrated module and the strain sensing device on the lower surface of the protective layer;
the strain sensing device is used for generating a strain signal;
the signal line is used for transmitting the strain signal to the signal processing integrated module;
the signal processing integrated module is used for processing the strain signal, converting the strain signal into a pressure signal and completing pressure monitoring of the vehicle-mounted carbon fiber hydrogen storage bottle;
the signal processing integration module includes: a signal acquisition processing device and a signal display device;
the signal acquisition processing device is connected with the signal display device through the signal line;
the signal acquisition and processing device is used for analyzing the strain signal into a pressure signal;
the signal display device is used for receiving the pressure signal and displaying the pressure signal;
the signal acquisition processing device comprises: the system comprises a data acquisition and analysis unit, a battery unit and a signal connecting wire;
the data acquisition and analysis unit is connected with the battery unit through the signal connecting wire;
the data acquisition and analysis unit is used for acquiring the strain signal and processing the strain signal;
the battery unit is used for supplying power to the data acquisition and analysis unit;
the data acquisition and analysis unit comprises a parameter setting subunit, a data acquisition subunit, a data storage subunit and a data analysis subunit;
the parameter setting subunit is used for parameter setting;
the data acquisition subunit is used for acquiring the strain signals;
the data analysis subunit is used for analyzing and processing the acquired strain signals based on the set parameters and converting the acquired strain signals into pressure signals;
the data storage subunit is used for storing the pressure signal;
the strain of the bottle body is monitored in real time through a strain sensing device, and signals are analyzed into display data of a pressure value, a pressure range and a maximum strain distribution area through a data processing module according to the corresponding relation between the pressure of the bottle body and the strain of the bottle body;
the strain and pressure conversion method comprises the following steps:
when the air bottle is inflated and deflated, the bottle body is expanded and contracted along with the pressure change of the air bottle, so that the bottle body surfaceThe strain sensor of the surface also generates a change of a strain signal, namely, the filling pressure of the gas cylinder has a corresponding relation with the strain value generated by the strain sensor, so that an empirical formula Y=F (X) or X=F of a certain filling pressure Y of the gas cylinder and a certain position strain X of the gas cylinder body are obtained according to the corresponding relation -1 And (Y) according to an empirical formula, editing and designing a signal analysis module in signal processing integration, and converting the strain quantity of the gas cylinder into a pressure value.
2. The pressure monitoring device of the vehicle-mounted carbon fiber hydrogen storage bottle according to claim 1, wherein the battery unit is composed of one or more of a dry battery, a lead storage battery, a lithium battery and a solar battery.
3. The pressure monitoring device of the vehicle-mounted carbon fiber hydrogen storage bottle according to claim 1, wherein the signal display device comprises a pressure dial, a pressure partition plate, an alarm indicator light and a strain position display meter;
the pressure dial is used for displaying the magnitude of the pressure signal;
the pressure partition plate is used for displaying the pressure range of the pressure signal;
the alarm indicator lamp is used for alarming abnormal pressure;
the strain position display table is used for displaying specific positions of strain.
4. The pressure monitoring device of the on-vehicle carbon fiber hydrogen storage bottle according to claim 1, wherein the strain sensing device is composed of one or two of a resistance strain gauge and an optical strain gauge.
5. The pressure monitoring method of the vehicle-mounted carbon fiber hydrogen storage bottle is characterized by comprising the following steps of:
obtaining a strain signal;
and processing the strain signal, converting the strain signal into a pressure signal, and completing the pressure monitoring of the vehicle-mounted carbon fiber hydrogen storage bottle.
CN202210812950.9A 2022-07-11 2022-07-11 Pressure monitoring device and method for vehicle-mounted carbon fiber hydrogen storage bottle Active CN115218114B (en)

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CN202210812950.9A CN115218114B (en) 2022-07-11 2022-07-11 Pressure monitoring device and method for vehicle-mounted carbon fiber hydrogen storage bottle

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Application Number Priority Date Filing Date Title
CN202210812950.9A CN115218114B (en) 2022-07-11 2022-07-11 Pressure monitoring device and method for vehicle-mounted carbon fiber hydrogen storage bottle

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CN115218114B true CN115218114B (en) 2023-11-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201955882U (en) * 2011-03-18 2011-08-31 西北工业技术研究院 Forest fire danger testing and warning device
CN106527301A (en) * 2016-12-30 2017-03-22 河北省电力建设调整试验所 Portable data acquisition and analysis instrument
CN106764418A (en) * 2016-11-24 2017-05-31 洛阳双瑞风电叶片有限公司 A kind of composite high-pressure hydrogen storage cylinder stress overload monitor system
CN110469772A (en) * 2019-08-23 2019-11-19 重庆大学 A kind of hydrogen cylinder non-destructive testing device and detection method
CN113757552A (en) * 2021-09-08 2021-12-07 苏州辰航致远智能科技有限公司 Carbon fiber wound gas cylinder and health state monitoring method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201955882U (en) * 2011-03-18 2011-08-31 西北工业技术研究院 Forest fire danger testing and warning device
CN106764418A (en) * 2016-11-24 2017-05-31 洛阳双瑞风电叶片有限公司 A kind of composite high-pressure hydrogen storage cylinder stress overload monitor system
CN106527301A (en) * 2016-12-30 2017-03-22 河北省电力建设调整试验所 Portable data acquisition and analysis instrument
CN110469772A (en) * 2019-08-23 2019-11-19 重庆大学 A kind of hydrogen cylinder non-destructive testing device and detection method
CN113757552A (en) * 2021-09-08 2021-12-07 苏州辰航致远智能科技有限公司 Carbon fiber wound gas cylinder and health state monitoring method thereof

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