CN104266711A - Method and device for detecting residual hydrogen of metal hydride hydrogen storage device - Google Patents
Method and device for detecting residual hydrogen of metal hydride hydrogen storage device Download PDFInfo
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- CN104266711A CN104266711A CN201410560074.0A CN201410560074A CN104266711A CN 104266711 A CN104266711 A CN 104266711A CN 201410560074 A CN201410560074 A CN 201410560074A CN 104266711 A CN104266711 A CN 104266711A
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Abstract
The invention provides a method and a device for detecting the residual hydrogen of a metal hydride hydrogen storage device. The device comprises a pressure sensor, a flow testing system, a temperature control system and a vacuum system; the pressure sensor is used for testing the pressure inside the metal hydride hydrogen storage device; the flow testing system is formed by a mass flow meter and a flow integrating instrument and can be used for monitoring the instantaneous flow and the cumulative flow when the air flow passes through and calculating out the residual hydrogen inside the hydrogen storage device through the difference of the hydrogen storage amount and the cumulative flow; the temperature control system is used for providing the constant temperature environment required by the metal hydride hydrogen storage device. According to the device for detecting the residual hydrogen of the metal hydride hydrogen storage device, the structure is simple, the operation is convenient, the relation between the internal pressure and the residual hydrogen of the hydrogen storage device in the stable state can be determined, a relation curve of the internal pressure and the residual hydrogen is obtained, a user can determine the residual hydrogen of the hydrogen storage device by measuring the internal pressure of the hydrogen storage device conveniently, the device can also be used for controlling the hydrogen output of the metal hydride hydrogen storage device, and the load using requirements are met.
Description
Technical field
The present invention relates to the storage of hydrogen, transport, supply and detection technique, particularly relate to a kind of method and apparatus detecting metal hydride hydrogen storage unit pressure and residue hydrogen amount.
Background technology
Hydrogen Energy is a kind of generally acknowledged clean secondary energy, and its research, development and utilization are just being subject to paying attention to more and more widely.Because hydrogen quality is little, in gaseous state under normal temperature, inflammable and explosive, as having again dispersed during fuel and being interrupted the feature used, therefore the storage of hydrogen is the key issue utilizing Hydrogen Energy on a large scale.What mainly adopt at present is solid-state storage hydrogen and high-pressure gaseous storage hydrogen mode.
Metal hydride hydrogen storage unit based on solid-state hydrogen storage technology obtains paying close attention to of domestic and international researcher and develops, but this device in use, is difficult to determine its internal hydrogen surplus, brings very big inconvenience to user.Researcher has also carried out large quantity research for this reason, put volume change in hydrogen as by measuring hydrogen bearing alloy inhaling, measure the change of hydrogen-storing device internal stress and thermal change etc. and carry out detection hydrogen surplus, but this patten's design is complicated, cost is high, is difficult to large-scale employing.
Summary of the invention
Because the hydrogen storage content of hydrogen bearing alloy can change along with the change of storage hydrogen pressure, therefore certain relation is had based on the hydrogen storage content of the metal hydride hydrogen storage unit of hydrogen bearing alloy and pressure, ask this hydrogen-storing device of calculation residue hydrogen amount to be feasible by pressure change, require will have higher precision to the detection of pressure simultaneously.
The invention provides a kind of method and apparatus detecting metal hydride hydrogen storage unit pressure and residue hydrogen amount, comprise pressure transducer, flow testing system, temperature control system and vacuum system.The pressure of pressure transducer test metal hydride hydrogen storage unit inside, flow testing system can monitor air-flow by time instantaneous delivery and integrated flux, and then calculate hydrogen-storing device inside residue hydrogen amount, consider that hydrogen bearing alloy is inhaled to put hydrogen process and be attended by thermal change, need to utilize temperature control system to provide working environment needed for metal hydride hydrogen storage unit.
In order to realize higher test accuracy, require that pressure transducer testing range used is not higher than 10MPa, precision is not less than ± 0.5%FS; This pressure transducer can extend into hydrogen-storing device inside, or is directly connected in the exit of hydrogen-storing device.
Flow testing system requires can test instantaneous delivery and integrated flow and have data recording function, can be made up of, or select the digital mass flowmeter with flow indication the flow integrator of mass flowmeter and supporting display.
Put hydrogen process because of metal hydride hydrogen storage unit suction and be attended by thermal change, in order to realize steady state (SS), need to use temperature control system, the scope generally to be controlled by ambient stable residing for this hydrogen-storing device in room temperature ~ 100 DEG C, also can select low form or megathermal temperature control system as required.
For specific metal hydride hydrogen storage unit, obtain the relation curve of its pressure and residue hydrogen amount by following steps: under first will guaranteeing that whole test process is in same temperature condition, be then full of under hydrogen state, testing this hydrogen-storing device internal pressure; Open hydrogen discharging valve door, release valve-off after a part of hydrogen, read hydrogen desorption capacity by flow testing system, and then calculate hydrogen-storing device inside residue hydrogen amount, read the pressure under hydrogen-storing device internal stability state by pressure transducer; Then continue to open valve and release hydrogen partial, residue hydrogen amount corresponding under drawing certain steady pressure equally, repeatedly repeats above step and can draw hydrogen-storing device internal pressure/residual hydrogen magnitude relation curve, and simulation obtains relation equation.In the use procedure that this hydrogen-storing device is follow-up, only by testing the internal pressure of hydrogen-storing device under same temperature conditions, namely need obtain residue hydrogen amount easily by comparison relation curve, facilitating user better to judge.
This apparatus structure is simple, easy to operate, also can be used to the output directly controlling metal hydride hydrogen storage unit, according to load request for utilization, regulates required flow by flow testing system, realizes stable output; And determine that whether residue hydrogen amount is sufficient by the integrated flow value of display, in time hydrogen operation filled to hydrogen-storing device or change hydrogen source.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
With reference to the accompanying drawings exemplary embodiment of the present invention is described in detail.
As shown in Figure 1, pick-up unit of the present invention, comprises metal hydride hydrogen storage unit (1), pressure transducer (2), flow testing system (3), temperature control system (4) and vacuum system (5).Hydrogen process is put in the suction that can control hydrogen-storing device (1) by controlling needle-valve (6), and temperature control system (4) is controllable constant-temperature water bath, needs the working temperature of stability contorting hydrogen-storing device (1) within the scope of room temperature ~ 100 DEG C according to test or use; Pressure transducer (2) is connected to needle-valve (6) exit by threeway (7); When needs vacuumize this pick-up unit, regulating three-way valve (9) leads to vacuum system (5) direction; When this pick-up unit need hydrogen to send or supply load time, regulating three-way valve (9) leads to puts hydrogen (10) direction; When pressure transducer (2) does not need to use, ball valve (8) can be closed and protect.
Claims (5)
1. one kind is detected the method and apparatus of metal hydride hydrogen storage unit residue hydrogen amount, comprise pressure transducer, flow testing system, temperature control system and vacuum system, the pressure of pressure transducer test metal hydride hydrogen storage unit inside, the instantaneous delivery that flow testing system monitoring air-flow passes through and integrated flux, and then calculating hydrogen-storing device inside residue hydrogen amount, temperature control system is for providing the working environment needed for metal hydride hydrogen storage unit.
2. device according to claim 1, it is characterized in that pressure transducer testing range is not higher than 10MPa, precision is not less than ± 0.5%FS.
3. device according to claim 1, is characterized in that required pressure transducer extend into hydrogen-storing device inside, or is directly connected in the exit of hydrogen-storing device.
4. device according to claim 1, is characterized in that flow testing system is made up of mass flowmeter and flow integrator, or with the digital mass flowmeter of flow indication.
5. device according to claim 1, is characterized in that the temperature range of temperature control system Absorbable organic halogens regulation and control room temperature ~ 100 DEG C, or according to requirements configures low temperature control or high-temperature control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560074.0A CN104266711A (en) | 2014-10-21 | 2014-10-21 | Method and device for detecting residual hydrogen of metal hydride hydrogen storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560074.0A CN104266711A (en) | 2014-10-21 | 2014-10-21 | Method and device for detecting residual hydrogen of metal hydride hydrogen storage device |
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| Publication Number | Publication Date |
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| CN104266711A true CN104266711A (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410560074.0A Pending CN104266711A (en) | 2014-10-21 | 2014-10-21 | Method and device for detecting residual hydrogen of metal hydride hydrogen storage device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115899564A (en) * | 2022-12-23 | 2023-04-04 | 北京天海氢能装备有限公司 | Hydrogen system safety limiting method and system based on target value control |
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| CN102401233A (en) * | 2011-10-20 | 2012-04-04 | 林德工程（杭州）有限公司 | Hydrogen storing tank based on metal hydrogen storage principle |
| CN103267872A (en) * | 2013-05-16 | 2013-08-28 | 桂林电子科技大学 | Device for measuring flow rate and flow quantity of gas released by matter at different temperatures |
| CN204188214U (en) * | 2014-10-21 | 2015-03-04 | 北京浩运金能科技有限公司 | Detect the device of metal hydride hydrogen storage unit residue hydrogen amount |
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2014
- 2014-10-21 CN CN201410560074.0A patent/CN104266711A/en active Pending
Patent Citations (3)
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| CN102401233A (en) * | 2011-10-20 | 2012-04-04 | 林德工程（杭州）有限公司 | Hydrogen storing tank based on metal hydrogen storage principle |
| CN103267872A (en) * | 2013-05-16 | 2013-08-28 | 桂林电子科技大学 | Device for measuring flow rate and flow quantity of gas released by matter at different temperatures |
| CN204188214U (en) * | 2014-10-21 | 2015-03-04 | 北京浩运金能科技有限公司 | Detect the device of metal hydride hydrogen storage unit residue hydrogen amount |
Non-Patent Citations (2)
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| 李慧: "用于氢化物复合储氢器和高压氢化物压缩器的储氢合金研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115899564A (en) * | 2022-12-23 | 2023-04-04 | 北京天海氢能装备有限公司 | Hydrogen system safety limiting method and system based on target value control |
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Application publication date: 20150107 |