CN100487459C - Hydrogen storage alloy performance integrated experimental apparatus - Google Patents
Hydrogen storage alloy performance integrated experimental apparatus Download PDFInfo
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- CN100487459C CN100487459C CNB2004100505943A CN200410050594A CN100487459C CN 100487459 C CN100487459 C CN 100487459C CN B2004100505943 A CNB2004100505943 A CN B2004100505943A CN 200410050594 A CN200410050594 A CN 200410050594A CN 100487459 C CN100487459 C CN 100487459C
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000001257 hydrogen Substances 0.000 title claims abstract description 69
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 69
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 36
- 239000000956 alloy Substances 0.000 title claims abstract description 36
- 238000003860 storage Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
- 238000012360 testing method Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 238000011056 performance test Methods 0.000 claims 6
- 238000004154 testing of material Methods 0.000 abstract 1
- 150000002431 hydrogen Chemical class 0.000 description 10
- 229910052987 metal hydride Inorganic materials 0.000 description 7
- 150000004681 metal hydrides Chemical class 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000011232 storage material Substances 0.000 description 6
- 238000006253 efflorescence Methods 0.000 description 4
- 206010037844 rash Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000003795 desorption Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910000878 H alloy Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention relates to a material testing equipment, in particular, it relates to a hydrogen storage alloy testing equipment. It is formed from reaction chamber, hydrogen gas circulation system and liquor circulation system, in which between reaction chamber and hydrogen gas circulation system a quick joint is used to implement closed connection, the hydrogen gas circulation system can make the hydrogen gas be continuously circulated between the reaction chamber and hydrogen gas circulation system, and said liquid circulation system can make the constant temperature liquids with different temperatures be alternatively circulated between the opened container and oil bath so as to make the hydrogen storage alloy implement alternative circulation of absorbing and releasing hydrogen. In the course of hydrogen gas and liquid circulation the control and data acquisition system can be used for acquiring and processing data, and outputting signal to control system to make test.
Description
Technical field
The present invention relates to a kind of material property testing equipment, particularly a kind of hydrogen-storage alloy performance comprehensive testing equipment.
Background technology
At present, along with closing on day by day and human pursuit to cleaning ambient of fossil energy exhaustion, Hydrogen Energy will the important effect of play more and more.In recent years, national governments competitively throw huge fund and are used for Hydrogen Energy and utilize The Research of Relevant Technology.It seems that from present technical development the accumulating of hydrogen is that Hydrogen Energy is utilized one of technical bottleneck.Wherein, the research of high-performance hydrogen-storage material is present research focus.Alloy hydrogen storage material is the highest hydrogen storage material of present commercialization degree, has been widely used in fields such as Ni-MH battery, hydrogen purification, catalyzer.Yet, reach in the relevant engineering application at the development of new hydrogen-storage alloy, need measure some basic parameters of hydrogen-storage alloy by experiment:
The H reaction enthalpy,
The equilibrium pressure P of S reaction entropy, reaction
Eq, berm width, platform slope rate dInP/d (H/M), lag coefficient In (Pa/Pd), reaction rate, suction put the size distribution after the hydrogen circulation efflorescence and platform pressure, berm width, the platform of reaction lagged behind, inhale the influence of hydrogen discharging rate etc.But existing storage hydrogen proving installation applying pressure usable range is little, and system stability is poor, easily leaks, automaticity is not high-and all be the manual test device basically, the very flexible of system, degree of accuracy are not high." rare metal ", 1997,21 (1), the simple measuring of hydrogen-storage alloy PCT curve, the testing equipment of report is a hand gear, and the top pressure that uses is 2.5MPa, and manometric accuracy class is 2.5 grades.The precision of this device is lower, and can not be used for testing the higher hydrogen-storage alloy of some equilibrium pressure." China YouSe Acta Metallurgica Sinica ", 2003,13 (3), hydrogen storage material performance testing device and application, though the testing equipment of report adopts computer to carry out data acquisition, but still be hand gear, and its kinetic test can only be at some equilibrium pressure greater than an atmospheric metal hydride, then powerless for equilibrium pressure under the room temperature less than an atmospheric LaNiAl series metal hydride.
Summary of the invention
Deficiency such as low for the automaticity that overcomes existing hydrogen-storage alloy performance testing equipment, that the pressure usable range is little, system stability is poor, degree of accuracy is low the object of the present invention is to provide a kind of automaticity height, measurement parameter is complete, measuring accuracy is high, hydrogen-storage alloy performance comprehensive testing equipment applied widely, computer-controlled.
The objective of the invention is to be achieved through the following technical solutions:
The present invention is made up of reaction chamber, hydrogen gas circulating system, the isothermal liquid circulation system.Wherein reaction chamber is connected by rapid-acting coupling is airtight with hydrogen gas circulating system, and reaction chamber is immersed in the open-top receptacle that fills isothermal liquid simultaneously, and perhaps reaction chamber is placed in the electric furnace with Controllable Temperature.
The upper port of open-top receptacle links to each other by high temperature oil bath in solenoid valve and the fluid circulation system, low temperature oil bath; The lower port of open-top receptacle links to each other with high temperature oil bath, low temperature oil bath in the fluid circulation system respectively by solenoid valve; Hydrogen gateway on the reaction chamber links to each other with hydrogen cylinder and vacuum pump in the hydrogen gas circulating system by valve; Pressure unit in the hydrogen gas circulating system, temperature transmitter, motorized valve link to each other with computer control and data acquisition system (DAS); The solenoid valve of fluid circulation system links to each other with computer control and data acquisition system (DAS).
Wherein: described reaction chamber upper end has the hydrogen gateway, by filtrator, rapid-acting coupling and the gas piping in the hydrogen gas circulating system is airtight is connected; Described hydrogen gas circulating system is made up of hydrogen cylinder, vacuum pump and valve, in system, two reaction chambers that are immersed in isothermal liquid link to each other with filtrator through gas piping, the filtrator other end links to each other with rapid-acting coupling, the rapid-acting coupling another port links to each other with two ports of first threeway, the 3rd port of first threeway links to each other with diaphragm valve, links to each other with port of first four-way then; The reaction chamber that is put in the constant temperature electric furnace links to each other with filtrator by pipeline, and the filtrator other end links to each other with rapid-acting coupling, and the rapid-acting coupling another port links to each other with diaphragm valve, links to each other with the second four-way right output port then.The first four-way lower port links to each other with diaphragm valve, links to each other with pressure unit then; The first four-way left port links to each other with diaphragm valve, links to each other with pressure unit then; The first four-way upper port links to each other with the lower port of second four-way.The left port of second four-way links to each other with diaphragm valve, links to each other with pressure unit then; The upper port of second four-way links to each other with the lower port of the 3rd four-way.The right output port of the 3rd four-way links to each other with motorized valve, links to each other with vacuum pump then; The left port of the 3rd four-way links to each other with valve, and the right output port with second threeway links to each other then; The upper port of second threeway links to each other with safety valve, and the left port of second threeway links to each other with motorized valve, logical then atmosphere; The upper port of the 3rd four-way and two diaphragm valves of connecting, motorized valve links to each other, and the lower port with the 3rd threeway links to each other then; The right output port of the 3rd threeway links to each other with an end of diaphragm valve, and the other end of diaphragm valve links to each other with the right output port of the 4th threeway; The upper port of the 3rd threeway links to each other with the low pressure end of reduction valve; The high-pressure side of reduction valve links to each other with the lower port of the 4th threeway; The upper port of the 4th threeway links to each other with the right output port of the 4th four-way; The upper port of the 4th four-way links to each other with pointer pressure, and lower port links to each other with gas cylinder, and left port links to each other with hydrogen cylinder by diaphragm valve.Described fluid circulation system is made up of open-top receptacle, high temperature oil bath, low temperature oil bath, valve, pump, and in system, oil bath links to each other with the upper and lower port of open-top receptacle through pump, filtrator, solenoid valve, liquid line.Described hydrogen gas circulating system itself is equipped with gas cylinder, uses for temporary transient storage of hydrogen; In the described hydrogen gas circulating system safety valve is housed, guarantees the safety of native system under the situation of surpressure.
Described reaction chamber comprises the hydrogen gateway, pressure head, filter, nut, copper tube, O-ring seal, gland nut, the copper tube upper end open, O-ring seal is placed in its upper surface, transport and store the hydrogen alloy in the copper tube, O-ring seal compresses by the flange end of flanged (FLGD) pressure head, perforate in the middle of the pressure head, be fitted with the hydrogen gateway in the hole, the pressure head opening diameter of bottom, hydrogen gateway becomes big, press filter in bottom, hydrogen gateway by nut, gland nut is the cap-like structure of middle perforate, and gland nut is set in pressure head, the gland nut openend is connected with copper tube by screw thread, and the flange end of acting force by pressure head acted on the O-ring seal.
Described computer control and data acquisition system (DAS) are made up of serial port expanding module, data collecting instrument, power supply, computing machine, relay, are divided into control section and part of data acquisition; Control section is controlled the motorized valve of hydrogen gas circulating system and the solenoid valve of fluid circulation system automatically by serial port expanding module and relay, and serial port expanding module links to each other with computing machine, by the computing machine input parameter; Part of data acquisition is obtained the temperature transmitter in the equipment, the signal of pressure unit respectively by data collecting instrument, then signal is transferred to computing machine, by computing machine as signal output part.
Advantage of the present invention and good effect are:
1, automaticity height: the present invention adopts computer control, is equipped with Keithley2700 multifunctional data acquiring device, but automatic control equipment operation and data acquisition.
2, measurement parameter is comprehensive: the temperature of reaction of tracking measurement alloy hydride accurately, and ambient temperature, the pressure of furnace temperature and course of reaction changes.Thus, PCT curve, dynamics and thermodynamic parameter, the alloy that can obtain reliable alloy hydride repeatedly inhaled the efflorescence particle diameter put after the hydrogen circulation and the efflorescence influence degree to dynamics and thermodynamic parameter.
3, measuring accuracy height: it is 4 * 10 that this testing equipment adopts leak rate
-9Std cm
3Swagelok valve and the precision of/s (std, promptly standard represents under the standard state) are 0.1%FS, the pressure unit of long-time stability＜0.1%FS/.
4, cost is low: the present invention adopts computing machine as output and control terminal, realizes high reliability robotization control with low cost.
5, use dirigibility strong: this testing equipment has manually, and automatic switching function uses dirigibility strong.Can set operation hours spacing parameter, cycle index parameter; Adopt rapid-acting coupling to be connected between reaction chamber and the hydrogen gas circulating system, but the usability of efficient, flexible expanding system help test operation simultaneously.
6, safe: native system has safety valve, can effectively prevent the generation of mishap.
7, serviceability temperature and pressure limit height: 0～300 ℃ of satisfied temperature, pressure 10
-3The use of Pa～12MPa can be measured the correlation parameter of all hydrogen-storage alloys basically.
8, can experimentize to three samples simultaneously, improve conventional efficient.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of reaction chamber of the present invention.
Fig. 3 is computer control of the present invention and data acquisition system (DAS) theory diagram.
Fig. 4 is basic control circuit figure.
Fig. 5 is the data acquisition synoptic diagram.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, the present invention is made up of reaction chamber 17 and hydrogen gas circulating system, fluid circulation system; The gateway 18 of reaction chamber 17 is connected by rapid-acting coupling 28 with hydrogen gas circulating system, and reaction chamber 17 is immersed in the open-top receptacle 14 that fills isothermal liquid simultaneously, or is placed in the electric furnace 40 of Controllable Temperature.In the copper tube 23 of reaction chamber 17 hydrogen-storage alloy 22 is housed; The gateway 18 that is immersed in two reaction chambers 17 of isothermal liquid links to each other with an end of second filtrator 27; The other end of second filtrator 27 links to each other with an end of rapid-acting coupling 28; The other end of rapid-acting coupling 28 links to each other with two ports of first threeway 29; First threeway 29 links to each other with the right output port of first diaphragm valve 30.The gateway 18 that is placed on another reaction chamber 17 in the electric furnace 40 of Controllable Temperature links to each other with an end of second filtrator 27; The other end of second filtrator 27 links to each other with an end of another rapid-acting coupling 28; The other end of another rapid-acting coupling 28 links to each other with the 5th diaphragm valve 39; The left port of first diaphragm valve 30 links to each other with the right output port of first four-way 35; The lower port of first four-way 35 links to each other with the right output port of second diaphragm valve 31; The left port of second diaphragm valve 31 links to each other with the port of pressure unit 32; The upper port of first four-way 35 links to each other with the lower port of second four-way 38; The left port of first four-way 35 links to each other with an end of the 3rd diaphragm valve 34; The other end of the 3rd diaphragm valve 34 links to each other with pressure unit 33; The right output port of second four-way 38 links to each other with the 5th diaphragm valve 39; The left port of second four-way 38 links to each other with an end of the 4th diaphragm valve 37; The other end of the 4th diaphragm valve 37 links to each other with the port of pressure unit 36; The upper port of second four-way 38 links to each other with the lower port of the 3rd four-way 46; The right output port of the 3rd four-way 46 links to each other with an end of the 6th diaphragm valve 44; The other end of the 6th diaphragm valve 44 links to each other with an end of the 3rd motorized valve 43; The other end of the 3rd motorized valve 43 links to each other with the inlet end of vacuum pump 42; The left port of the 3rd four-way 46 links to each other with an end of the 7th diaphragm valve 47; The other end of the 7th diaphragm valve 47 links to each other with the right output port of second threeway 48; The upper port of second threeway 48 links to each other with safety valve 49; The left port of second threeway 48 links to each other with an end of second motorized valve 50; The other end of second motorized valve 50 leads to atmosphere; The upper port of the 3rd four-way 46 links to each other with an end of the 8th diaphragm valve 51; The other end of the 8th diaphragm valve 51 links to each other with an end of first motorized valve 52; The other end of first motorized valve 52 links to each other with the lower port of the 3rd threeway 53; The upper port of the 3rd threeway 53 links to each other with the low pressure end of reduction valve 55; The right output port of the 3rd threeway 53 links to each other with an end of the 9th diaphragm valve 54; The other end of the 9th diaphragm valve 54 links to each other with the right output port of the 4th threeway 56; The lower port of the 4th threeway 56 links to each other with the high-pressure side of reduction valve 55; The upper port of the 4th threeway 56 links to each other with the right output port of the 4th four-way 59; The upper port of the 4th four-way 59 connects pointer pressure 57; The lower port of the 4th four-way 59 connects gas cylinder 58; The left port of the 4th four-way 59 links to each other with an end of the tenth diaphragm valve 60; The other end of the tenth diaphragm valve 60 links to each other with hydrogen cylinder 61.
The lower port 15 of open-top receptacle 14 links to each other with the left port of the 5th threeway 10; The lower port of the 5th threeway 10 links to each other with an end of second solenoid valve 2; The other end of second solenoid valve 2 links to each other with first filtrator 7; Another termination steel pipe of first filtrator 7 also makes it to insert in the high temperature oil bath 8; The right output port of the 5th threeway 10 links to each other with the left port of the 6th threeway 11; The lower port of the 6th threeway 11 links to each other with an end of the 3rd solenoid valve 3; Another termination steel pipe of the 3rd solenoid valve 3 also makes it to insert in the high temperature oil bath 8; The right output port of the 6th threeway 11 links to each other with the left port of the 7th threeway 12; The lower port of the 7th threeway 12 links to each other with the 4th solenoid valve 4 one ends; Another termination steel pipe of the 4th solenoid valve 4 also makes it to insert in the low temperature oil bath 9; The right output port of the 7th threeway 12 links to each other with the 5th solenoid valve 5 one ends; The other end of the 5th solenoid valve 5 links to each other with an end of first filtrator 7; Another termination steel pipe of first filtrator 7 also makes it to insert in the low temperature oil bath 9; The upper port 16 of open-top receptacle 14 links to each other with the left port of the 8th threeway 13; The lower port of the 8th threeway 13 links to each other with first solenoid valve, 1 one ends; First solenoid valve, 1 another termination steel pipe also makes it to insert in the high temperature oil bath 8; The 8th threeway 13 right output port link to each other with an end of the 6th solenoid valve 6; Another termination steel pipe of the 6th solenoid valve 6 also makes it to insert in the low temperature oil bath 9.
As shown in Figure 2, reaction chamber 17 comprises gateway 18, pressure head 19, filter 20, hexagonal socket nut 21, cylindrical copper tube 23, O-ring seal 24, gland nut 25, hexagonal socket nut 21 is pressed on the filter 20, hexagonal socket nut 21 and pressure head 19 are by being threaded, gland nut 25 is connected with copper tube 23 by screw thread, and acting force acted on the O-ring seal 24 by pressure head 19, make O-ring seal 24 produce sealing effectiveness.
Principle of work of the present invention:
1, the test philosophy of P-C-T curve: when measuring the P-C-T curve, reaction chamber keeps steady temperature, opening related valve then makes hydrogen charge into reaction chamber by hydrogen cylinder, gather hydrogen gas circulating system and reaction chamber temperature, pressure by computer control and data acquisition system (DAS) during the question response balance, state equation by hydrogen calculates hydrogen, be hydrogen at transverse axis then, the longitudinal axis is that the coordinate system of relevant pressure is made its respective point.Carry out said process repeatedly, connect each point then and can obtain the P-C-T curve.
2, the test philosophy of kinetic curve: by the computer control hydrogen gas circulating system corresponding and the force value and the temperature value of reaction chamber with acquisition system collection and time.Can calculate the corresponding relation of suction/hydrogen desorption capacity and time by the state equation of hydrogen.Thus, be the time at transverse axis, the longitudinal axis is to inhale/put in the coordinate system of percentage amounts to make suction/hydrogen desorption kinetics curve.
3, circulation efflorescence test philosophy: utilize hydrogen storage material to be easy to inhale hydrogen at low temperatures, at high temperature be easy to put the principle of hydrogen, make associated solenoid valve and motorized valve folding assurance hydrogen-storage alloy inhale hydrogen at low temperatures by computer control and data acquisition system (DAS) control, at high temperature put hydrogen.Hydrogen storage material is so inhaled put hydrogen tens thousand of times, can measure the circulation powder performance of hydrogen-storage alloy.
Computer control and data acquisition system (DAS) schematic diagram as shown in Figure 3, computer control and data acquisition system (DAS) are made up of 1104 serial port expanding modules, data collecting instrument (the concrete model of present embodiment is keithleyModel 2700), power supply, computing machine, relay (the concrete model of present embodiment is Omron MY2NJ), are divided into control section and part of data acquisition; Control section is controlled the motorized valve of hydrogen gas circulating system and the solenoid valve of fluid circulation system automatically by serial port expanding module and relay, and serial port expanding module links to each other with computing machine, by the computing machine input parameter; Part of data acquisition is obtained the temperature transmitter in the equipment, the signal of pressure unit respectively by data collecting instrument, then signal is transferred to computing machine, by computing machine as signal output part.
Computer control and data acquisition system (DAS) ultimate principle:
Control section: as shown in Figure 4, adopting model is that 1104 serial port expanding module can be increased to 6 with the com mouth with computing machine, this device only needs to use wherein 5, the power on/off state of two relay coils of each com mouth control, RTS by VB programming control com mouth, the DTR pin is corresponding to difference level constantly, produce switching signal, obtain and amplify the power on/off state of switching signal pilot relay coil by light idol and triode, thereby the control associated solenoid valve, and motorized valve is at difference open and-shut mode constantly.What Fig. 4 showed is the circuit of one of them com mouth control, and the circuit of other all com mouth controls is identical with it.
Collecting part: as shown in Figure 5, obtain temperature, the pressure signal of pipe system from pressure unit, temperature transmitter, and be converted into the acceptable form of computing machine by Keithley Model 2700 data collecting instruments.Finally show and gather the real time temperature and the force value of pipe system by computing machine.
The course of work of the present invention:
1.P-C-T the main test process of curve: at first, add hydrogen-storage alloy 22 in a reaction chamber 17 therein, be connected with hydrogen gas circulating system by rapid-acting coupling 28 then, guarantee reaction chamber constant temperature in open-top receptacle 14 or the Controllable Temperature electric furnace 40 by placing it in simultaneously.By computer control and data acquisition system (DAS) the 3rd motorized valve 43, second motorized valve 50, first motorized valve 52 are made as out, manually control is made as all diaphragm valves and closes, and manual adjustments reduction valve 55 low pressure ends are to there not being gas output.Open the valve above the hydrogen cylinder 61, open the tenth diaphragm valve 60 then, inflation treats to close when gas cylinder 58 internal pressures reach 12MPa the tenth diaphragm valve 60 in gas cylinder 58.Start vacuum pump 42, slowly open the 6th diaphragm valve 44, the eight diaphragm valves 51, slowly open first diaphragm valve 30 or the 5th diaphragm valve 39 then, hydrogen gas circulating system and reaction chamber 17 are vacuumized, treat that pressure reduces to 10
-3During Pa.Write down the temperature of Hydrogen Vapor Pressure, ambient temperature, isothermal liquid by computer control and data acquisition system (DAS).Close first diaphragm valve 30 then, opening the 8th diaphragm valve 51 inflates to system, the temperature of the pressure by computer control and data acquisition system (DAS) record hydrogen, ambient temperature, isothermal liquid, open first diaphragm valve 30 or the 5th diaphragm valve 39 then, treat hydrogen and hydrogen-storage alloy molecular balance after, the record ambient temperature, the isothermal liquid temperature, Hydrogen Vapor Pressure repeats said process then, reaches capacity up to hydrogen-storage alloy and hydrogen reaction.Extrapolate hydrogen storage content by the state equation of hydrogen, make the P-C-T curve map thus corresponding to alloy under the uniform temperature certain pressure.
2. kinetic curve is mainly measured process: at first hydrogen-storage alloy is repeatedly activated, close second diaphragm valve 31, the 4th diaphragm valve 37, the 7th diaphragm valve 47, the 8th diaphragm valve 51, the 6th diaphragm valve 44 and first diaphragm valve 30 or the 5th diaphragm valve 39, open the 8th diaphragm valve 51 then, fill hydrogen to system and reach certain value up to pressure, close the 8th diaphragm valve 51 then, open first diaphragm valve 30 or the 5th diaphragm valve 39 rapidly, start computer control and data acquisition system (DAS) and timer simultaneously, pressure and time corresponding value to system are gathered, question response reaches balance, stops data acquisition.The data that utilization collects can obtain the kinetic curve of hydrogen-storage alloy by the hydrogen state equation.
3. the main test process of cycle life: at first, in two reaction chambers 17, add hydrogen-storage alloy 22 respectively, be connected with hydrogen gas circulating system by rapid-acting coupling 28 then, by placing it in the open-top receptacle 14, guarantee reaction chamber 17 constant temperature simultaneously.Testing equipment is evacuated to 10 with vacuum pump 42
-3The vacuum of Pa, open valve and the tenth diaphragm valve 60 that hydrogen cylinder 61 carries then, in gas cylinder 58, be inflated to 12MPa, regulate the low pressure end output pressure of reduction valve 55, open first diaphragm valve 30, the 6th diaphragm valve 44, the 7th diaphragm valve 47, the 8th diaphragm valve 51, second diaphragm valve 31, close the 4th diaphragm valve 37, the 3rd diaphragm valve 34, the 5th diaphragm valve 39, the high temperature oil bath is heated to 150 ℃, the low temperature oil bath is heated to 40 ℃.Move according to Automatic Program by system by computing machine, open each solenoid valve, motorized valve in chronological order successively, be in closed condition when switching in the first beginning and end.Along with opening of each solenoid valve, motorized valve, system begins operation, and its operation steps is:
The first step: open the 5th solenoid valve 5, the 6th solenoid valve 6, first motorized valve 52.When the 5th solenoid valve 5 is opened, the liquid of low temperature oil bath 9 is pumped into open-top receptacle 14, liquid enters open-top receptacle 14 by the lower port 15 of open-top receptacle, and when the liquid in the open-top receptacle 14 was expired to its upper port 16, liquid was back in the low temperature oil bath 9 by upper port 16.H-H reaction generation metal hydride takes place to inhale with hydrogen in hydrogen-storage alloy 22 in the reaction chamber at this moment.
Second step: close the 5th solenoid valve 5, the 6th solenoid valve 6, first motorized valve 52, open the 4th solenoid valve 4, second motorized valve 50.This moment, system was to airborne release hydrogen, and simultaneously low temperature oil stops pumping, and the low temperature oil in the open-top receptacle 14 is back in the low temperature oil bath 9 through the 4th solenoid valve 4 by lower port 15, and metal hydride generation hydrogen discharge reaction constantly generates hydrogen-storage alloy in the reaction chamber 17.
The 3rd step: keep the 4th solenoid valve 4 for open mode, close second motorized valve 50, open the 3rd motorized valve 43.42 pairs of systems of vacuum pump this moment vacuumize, and low temperature oil continues to reflux, and metal hydride continues to take place hydrogen discharge reaction in the reaction chamber 17.
The 4th step: close the 4th solenoid valve 4, keep the 3rd motorized valve 43, open first solenoid valve 1, second solenoid valve 2 for open mode.At this moment, high-temp liquid is pumped into open-top receptacle 14 by second solenoid valve 2, wait to be full of whole open-top receptacle 14 after, be expelled back in the high temperature oil bath 8 by its upper port 16, hydrogen discharge reaction continue to take place in metal hydride in the reaction chamber 17.
The 5th step: close first solenoid valve 1, second solenoid valve 2, keep the 3rd motorized valve 43, open the 3rd solenoid valve 3 for open mode.At this moment, the high-temp liquid in the open-top receptacle 14 is drained in the high temperature oil bath 8 by lower port 15, and the high-temp liquid in the high temperature oil bath 8 stops to be pumped in the open-top receptacle 14 simultaneously, and metal hydride continues to take place hydrogen discharge reaction in the reaction chamber.
Said process is that the hydrogen circulation is put in a suction, the operator can set cycle index on computer operation interface, computer control and data acquisition system (DAS) will be controlled each solenoid valve, the automatic operation of motorized valve number of times is on request inhaled and is put the hydrogen circulation, gathers the pressure and the temperature data of hydrogen gas circulating system simultaneously.
Claims (8)
1. hydrogen-storage alloy comprehensive performance test equipment is characterized in that: described testing equipment is made up of reaction chamber (17) and hydrogen gas circulating system, fluid circulation system; Airtight connection between reaction chamber (17) and hydrogen gas circulating system and the fluid circulation system wherein, reaction chamber (17) is immersed in open-top receptacle (14) or reaction chamber (17) is placed in the electric furnace (40) of Controllable Temperature simultaneously; The upper port (16) of open-top receptacle (14) links to each other by high temperature oil bath (8) in solenoid valve and the fluid circulation system, low temperature oil bath (9); The lower port (15) of open-top receptacle (14) links to each other with high temperature oil bath (8), low temperature oil bath (9) in the fluid circulation system respectively by solenoid valve; Hydrogen gateway (18) on the reaction chamber (17) links to each other with hydrogen cylinder (61) in the hydrogen gas circulating system by valve; Pressure unit (32,33,36) and thermocouple (26,41,45) link to each other with data acquisition system (DAS) with computer control.
2. according to the described hydrogen-storage alloy comprehensive performance test of claim 1 equipment, it is characterized in that: the hydrogen gateway (18) of described reaction chamber (17) links to each other with second filtrator (27), links to each other with hydrogen gas circulating system by rapid-acting coupling (28) then.
3, according to the described hydrogen-storage alloy comprehensive performance test of claim 1 equipment, it is characterized in that: described reaction chamber (17) comprises hydrogen gateway (18), pressure head (19), filter (20), hexagonal socket nut (21), cylindrical copper tube (23), O-ring seal (24), gland nut (25), hexagonal socket nut (21) is pressed on the filter (20), hexagonal socket nut (21) and pressure head (19) are by being threaded, gland nut (25) is connected with copper tube (23) by screw thread, and acting force is acted on the O-ring seal (24) by pressure head (19).
4. according to claim 1 or 2 described hydrogen-storage alloy comprehensive performance test equipment, it is characterized in that: described fluid circulation system comprises open-top receptacle (14), low temperature oil bath (9), high temperature oil bath (8), solenoid valve, first filtrator (7); In system, oil bath links to each other with the upper and lower port of open-top receptacle (14) through pump, first filtrator (7), solenoid valve, liquid line.
5, according to the described hydrogen-storage alloy comprehensive performance test of claim 4 equipment, it is characterized in that: the lower port (15) of described open-top receptacle (14) links to each other with the left port of the 5th threeway (10); The lower port of the 5th threeway (10) links to each other with an end of second solenoid valve (2); The other end of second solenoid valve (2) links to each other with first filtrator (7); Another termination steel pipe of first filtrator (7) also makes it to insert in the high temperature oil bath (8); The right output port of the 5th threeway (10) links to each other with the left port of the 6th threeway (11); The lower port of the 6th threeway (11) links to each other with an end of the 3rd solenoid valve (3); Another termination steel pipe of the 3rd solenoid valve (3) also makes it to insert in the high temperature oil bath (8); The right output port of the 6th threeway (11) links to each other with the left port of the 7th threeway (12); The lower port of the 7th threeway (12) links to each other with the 4th solenoid valve (4) one ends; Another termination steel pipe of the 4th solenoid valve (4) also makes it to insert in the low temperature oil bath (9); The right output port of the 7th threeway (12) links to each other with the 5th solenoid valve (5) one ends; The other end of the 5th solenoid valve (5) links to each other with an end of first filtrator (7); Another termination steel pipe of first filtrator (7) also makes it to insert in the low temperature oil bath (9); The upper port (16) of open-top receptacle (14) links to each other with the left port of the 8th threeway (13); The lower port of the 8th threeway (13) links to each other with first solenoid valve (1) one end; Another termination steel pipe of first solenoid valve (1) also makes it to insert in the high temperature oil bath (8); The 8th threeway (13) right output port links to each other with an end of the 6th solenoid valve (6); Another termination steel pipe of the 6th solenoid valve (6) also makes it to insert in the low temperature oil bath (9).
6. according to the described hydrogen-storage alloy performance comprehensive testing of claim 1 equipment, it is characterized in that: described hydrogen gas circulating system itself is equipped with gas cylinder (58), and safety valve (49) is housed in the described hydrogen gas circulating system.
7. according to the described hydrogen-storage alloy performance comprehensive testing of claim 1 equipment, it is characterized in that: described hydrogen gas circulating system comprises hydrogen cylinder, vacuum pump and valve, in system, the hydrogen gateway (18) that is immersed in two reaction chambers of isothermal liquid (17) links to each other with an end of second filtrator (27); The other end of second filtrator (27) links to each other with an end of rapid-acting coupling (28); The other end of rapid-acting coupling (28) links to each other with two ports of first threeway (29); First threeway (29) links to each other with the right output port of first diaphragm valve (30); The hydrogen gateway (18) that is placed on another reaction chamber (17) in the electric furnace (40) of Controllable Temperature links to each other with an end of second filtrator (27); The other end of second filtrator (27) links to each other with an end of another rapid-acting coupling (28); The other end of another rapid-acting coupling (28) links to each other with the 5th diaphragm valve (39); The left port of first diaphragm valve (30) links to each other with the right output port of first four-way (35); The lower port of first four-way (35) links to each other with the right output port of second diaphragm valve (31); The left port of second diaphragm valve (31) links to each other with the port of pressure unit (32); The upper port of first four-way (35) links to each other with the lower port of second four-way (38); The left port of first four-way (35) links to each other with an end of the 3rd diaphragm valve (34); The other end of the 3rd diaphragm valve (34) links to each other with pressure unit (33); The right output port of second four-way (38) links to each other with the 5th diaphragm valve (39); The left port of second four-way (38) links to each other with an end of the 4th diaphragm valve (37); The other end of the 4th diaphragm valve (37) links to each other with the port of pressure unit (36); The upper port of second four-way (38) links to each other with the lower port of the 3rd four-way (46); The right output port of the 3rd four-way (46) links to each other with an end of the 6th diaphragm valve (44); The other end of the 6th diaphragm valve (44) links to each other with an end of the 3rd motorized valve (43); The other end of the 3rd motorized valve (43) links to each other with the inlet end of vacuum pump (42); The left port of the 3rd four-way (46) links to each other with an end of the 7th diaphragm valve (47); The other end of the 7th diaphragm valve (47) links to each other with the right output port of second threeway (48); The upper port of second threeway (48) links to each other with safety valve (49); The left port of second threeway (48) links to each other with an end of second motorized valve (50); The other end of second motorized valve (50) leads to atmosphere; The upper port of the 3rd four-way (46) links to each other with an end of the 8th diaphragm valve (51); The other end of the 8th diaphragm valve (51) links to each other with an end of first motorized valve (52); The other end of first motorized valve (52) links to each other with the lower port of the 3rd threeway (53); The upper port of the 3rd threeway (53) links to each other with the low pressure end of reduction valve (55); The right output port of the 3rd threeway (53) links to each other with an end of the 9th diaphragm valve (54); The other end of the 9th diaphragm valve (54) links to each other with the right output port of the 4th threeway (56); The lower port of the 4th threeway (56) links to each other with the high-pressure side of reduction valve (55); The upper port of the 4th threeway (56) links to each other with the right output port of the 4th four-way (59); The upper port of the 4th four-way (59) connects pointer pressure (57); The lower port of the 4th four-way (59) connects gas cylinder (58); The left port of the 4th four-way (59) links to each other with an end of the tenth diaphragm valve (60); The other end of the tenth diaphragm valve (60) links to each other with hydrogen cylinder (61).
8, according to the described hydrogen-storage alloy comprehensive performance test of claim 1 equipment, it is characterized in that: described computer control and data acquisition system (DAS) are made up of serial port expanding module, data collecting instrument, power supply, computing machine and relay, are divided into control section and part of data acquisition; Control section is controlled the motorized valve of hydrogen gas circulating system and the solenoid valve of fluid circulation system automatically by serial port expanding module and relay, and serial port expanding module links to each other with computing machine, by the computing machine input parameter; Part of data acquisition is obtained the temperature transmitter in the equipment, the signal of pressure unit respectively by data collecting instrument, then signal is transferred to computing machine, by computing machine as signal output part.
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| CNB2004100505943A CN100487459C (en) | 2004-10-15 | 2004-10-15 | Hydrogen storage alloy performance integrated experimental apparatus |
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| CN100371711C (en) * | 2005-04-27 | 2008-02-27 | 中国科学院金属研究所 | Method for accurate testing performance of pressure concentration-temperature of hydrogen storage material |
| CN101419149B (en) * | 2007-10-26 | 2011-08-31 | 中国科学院金属研究所 | Hydrogen storage alloy performance test device |
| CN101858842B (en) * | 2009-04-08 | 2012-01-25 | 中国科学院金属研究所 | Test method of metal hydride thermal adsorption and desorption of hydrogen cycle life and special device thereof |
| CN102590374B (en) * | 2012-01-29 | 2013-07-03 | 扬州大学 | Test system for hydrogen production by hydrolyzing complex metal hydride in water vapour |
| CN104155425B (en) * | 2014-08-27 | 2016-03-02 | 辽宁永动力能源材料有限公司 | A kind of method of high precision PCT tester and test alloy material storing hydrogen PCT |
| CN104330330B (en) * | 2014-11-27 | 2017-06-27 | 先进储能材料国家工程研究中心有限责任公司 | A kind of equipment for testing gas absorption or desorption rate |
| CN114749111B (en) * | 2022-04-21 | 2024-03-19 | 云南电网有限责任公司电力科学研究院 | Reactor for testing hydrogen absorption and desorption performance of organic liquid hydrogen storage material |
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