Full-automatic hydrogen storage adsorption instrument with cycle life testing function

Abstract

The utility model discloses a full-automatic hydrogen storage adsorption instrument with a cycle life testing function. Wherein the upper end and the lower end of the lifting device are fixed with the shell, the sample chamber is suspended below a top plate of the shell, and the sample chamber directly faces a sample insertion hole of the temperature control device; a sample containing part is formed in the center of the top end of the copper heat sink, and a cylindrical water containing cavity is defined by the copper heat sink and the shell on the outer side; a heating rod is arranged in the copper heat sink, and a thermocouple connected with a control system is mounted in the copper heat sink; cooling air channels are evenly arranged in the copper heat sink, and the two ends of each cooling air channel are connected with inflation equipment through an air inlet and an air outlet respectively. The water bath and the heating furnace are integrally designed, so that the trouble that the water bath and the heating furnace need to be replaced during direct cooling at high temperature is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment for analyzing gas materials by measuring the pressure of gas, and particularly relates to a fully automatic hydrogen storage adsorber with a cyclic life test function. Background Technique

[0002] In the hydrogen energy industry chain, the safe storage and transportation of hydrogen have always been the bottleneck restricting the development of the industry. Compared with the currently commonly used high-pressure gaseous hydrogen storage and transportation technology, the solid-state hydrogen storage technology has the advantages of low hydrogen storage pressure, high hydrogen storage density, and high safety, and is considered to be one of the advantageous technologies for high-density and high-safety hydrogen storage and transportation. The hydrogen storage adsorber and the cyclic life tester are precision instruments for respectively standardizing the PCT curve and the cyclic life of hydrogen storage materials. Generally, both use the internationally common Sieverts isochoric method to test the hydrogen absorption and desorption performance of hydrogen storage materials. The basic principle is that at a certain constant temperature, for a closed system with a calibrated volume, by accurately measuring the change in the system hydrogen pressure before and after the hydrogen storage material sample adsorbs / desorbs hydrogen, the hydrogen storage and release performance of the hydrogen storage material is tested. Among them, the test of the PCT curve requires higher temperature accuracy. In the low-temperature region, the water bath method is generally used, and at the same time, high-temperature activation is required. This requires the hydrogen storage adsorber to be equipped with a high-temperature heating furnace and a low-temperature water bath, and be able to switch timely. The cyclic life test requires rapid heating and cooling to improve the test efficiency, and the natural cooling of the heating furnace cannot meet the requirements. Content of the Utility Model

[0003] Aiming at the problems existing in the background technique, the utility model provides a fully automatic hydrogen storage adsorber with a cyclic life test function. The technical solution includes: a gas path system, an inflation device, a circulating water supply device, a first housing, a sample chamber, a temperature control device, and a lifting device. The upper and lower ends of the lifting device are fixed to the first housing. The temperature control device includes: a copper heat sink, a sample accommodation part, an air inlet, an air outlet, a second housing, a water inlet, a water outlet, a heating rod, and a thermocouple. A sample accommodation part is opened in the center of the top end of the copper heat sink. The copper heat sink and the outer housing enclose a cylindrical water accommodation cavity. A water inlet communicating with the water accommodation cavity is provided below the side wall of the second housing, and a water outlet communicating with the water accommodation cavity is provided above the side wall of the second housing. The water inlet and the water outlet are connected to an external circulating water supply device through a circulating water interface;

[0004] A plurality of heating rods are provided in the copper heat sink, and a thermocouple connected to the control system is installed in the copper heat sink; a sample insertion hole matching the shape and size of the sample accommodation part is opened at the top of the second housing. After the temperature control device rises, the sample chamber enters the sample accommodation part; cooling air channels are uniformly provided in the copper heat sink, and both ends of the cooling water channels are connected to the inflation device through the air inlet and the air outlet respectively.

[0005] The gas path system includes: a hydrogen valve, a pressure gauge, a high-pressure pressure transmitter, a pressure regulating valve, a gas tank valve, a high-pressure three-way joint, a gas storage three-way joint, a low-pressure four-way joint, a gas storage tank, an evacuation valve, a vacuum valve, and a check valve. The hydrogen source is connected to the evacuation outlet in sequence through the hydrogen valve, the pressure gauge, the pressure regulating valve, the high-pressure three-way joint, the gas storage three-way joint, the low-pressure four-way joint, the evacuation valve, and the check valve. The third passage of the high-pressure three-way joint is connected to the high-pressure pressure transmitter. The third passage of the gas storage three-way joint is connected to the gas storage tank through the gas tank valve. The third passage of the low-pressure four-way joint is connected to the low-pressure pressure transmitter through the low-pressure sensor valve. The fourth passage of the low-pressure four-way joint is connected to the sample chamber through the sample chamber valve. A bypass is provided on the pipeline between the evacuation valve and the low-pressure four-way joint and is connected to the vacuum pumping equipment through the vacuum valve.

[0006] The sample chamber is suspended below the top plate of the first housing.

[0007] The sample chamber is directly opposite to the sample insertion hole of the temperature control device.

[0008] A hydrogen storage material sample is placed in the sample chamber.

[0009] The beneficial effects of the present utility model are as follows: It integrates the functions of a hydrogen storage sorption instrument and a cycle life tester. At the same time, it adopts an integrated design of a water bath and a heating furnace, eliminating the trouble of replacing the water bath tank and the heating furnace when directly cooling at high temperature. The combined cooling scheme of air cooling and water cooling can quickly raise and lower the temperature, improving the cycle life test efficiency. The cooling air duct is arranged in the copper heat sink, realizing the continuity of the operation during the switching of the cooling process. Description of the Drawings

[0010] Figure 1 It is a front schematic view of an embodiment of a full-automatic hydrogen storage sorption instrument with a cycle life test function of the present utility model;

[0011] Figure 2 It is a side schematic view of the hydrogen storage sorption instrument in the embodiment of the present utility model;

[0012] Figure 3 It is a structural schematic view of the temperature control device in the embodiment of the present utility model;

[0013] Figure 4 It is a schematic diagram of the gas path connection in the embodiment of the present utility model.

[0014] Wherein: 1 is the first housing; 2 is the sample chamber; 3 is the temperature control device; 4 is the circulating water interface; 5 is the lifting device; 6 is the copper heat sink; 7 is the sample accommodating part; 8 is the air inlet; 9 is the air outlet; 10 is the second housing; 11 is the water inlet; 12 is the water outlet; 13 is the heating rod; 14 is the thermocouple; 15 is the sample insertion hole; hydrogen valve 301; pressure gauge 302; high-pressure pressure transmitter 303; low-pressure pressure transmitter 304; pressure regulating valve 305; gas storage tank valve 306; low-pressure sensor valve 307; sample chamber valve 308; evacuation valve 309; vacuum valve 310; check valve 311; gas storage tank 312. Detailed implementation manners

[0015] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] As Figures 1 to 3 shown in the embodiment of the hydrogen storage adsorption instrument of the present utility model, it includes: a hydrogen storage material sample, a gas path system, a gas filling device, a circulating water providing device, a first housing 1, a sample chamber 2, a temperature control device 3 and a lifting device 5. The upper and lower ends of the lifting device 5 are fixed to the first housing 1 and drive the temperature control device 3 to move up and down. The sample chamber 2 is suspended below the top plate of the first housing 1 and is directly opposite to the sample insertion hole 15 of the temperature control device 3. The hydrogen storage material sample is placed in the sample chamber 2;

[0017] The temperature control device 3 includes: a copper heat sink 6, a sample accommodating part 7, an air inlet 8, an air outlet 9, a second housing 10, a water inlet 11, a water outlet 12, a heating rod 13 and a thermocouple 14. A sample accommodating part 7 is opened in the center of the top end of the copper heat sink 6. The copper heat sink 6 and the outer second housing 10 enclose a cylindrical water accommodating cavity. A water inlet 11 communicating with the water accommodating cavity is provided below the side wall of the second housing 10, and a water outlet 12 communicating with the water accommodating cavity is provided above the side wall of the second housing 10. The water inlet 11 and the water outlet 12 are both connected to the circulating water interface 4 and thus connected to an external circulating water tank and a circulating water providing device to provide circulating water; cooling air channels are uniformly arranged in the copper heat sink 6, and both ends of the cooling water channels are respectively connected to the gas filling device through the air inlet 8 and the air outlet 9; a plurality of heating rods 13 are arranged in the copper heat sink 6, and a thermocouple 14 connected to the control system is installed in the copper heat sink 6; a sample insertion hole 15 matching the shape and size of the sample accommodating part 7 is opened at the top of the second housing 10, so that after the temperature control device 3 rises, the sample chamber 2 enters the sample accommodating part 7;

[0018] The temperature control device adopts an integrated design of a water bath and a heating furnace, and can achieve precise temperature control in different temperature ranges to meet the PCT curve test of hydrogen storage materials; at the same time, a combined scheme of air cooling and water cooling can be used to quickly raise and lower the temperature to meet the cyclic life test.

[0019] As Figure 4As shown in the figure, the gas circuit system for testing the sample includes: a hydrogen valve 301, a pressure gauge 302, a high-pressure pressure transmitter 303, a pressure regulating valve 305, a gas tank valve 306, a high-pressure tee, a gas storage tee, a low-pressure four-way, a gas storage tank 312, a vent valve 309, a vacuum valve 310, and a check valve 311. Among them, the hydrogen source is sequentially connected to the vent outlet through the hydrogen valve 301, the pressure gauge 302, the pressure regulating valve 305, the high-pressure tee, the gas storage tee, the low-pressure four-way, the vent valve 309, and the check valve 311. The third passage of the high-pressure tee is connected to the high-pressure pressure transmitter 303. The third passage of the gas storage tee is connected to the gas storage tank 312 through the gas tank valve 306. The third passage of the low-pressure four-way is connected to the low-pressure pressure transmitter 304 through the low-pressure sensor valve 307. The fourth passage of the low-pressure four-way is connected to the sample chamber 2 through the sample chamber valve 308. A bypass is provided on the pipeline between the vent valve 309 and the low-pressure four-way and is connected to the vacuum pumping equipment through the vacuum valve 310.

[0020] The control system simultaneously has the functions of PCT test of hydrogen storage materials, hydrogen absorption and desorption kinetics test, and cycle life test. The control system is connected to a thermocouple, a circulating water supply device, an inflation device, a lifting device 5, and a heating rod 13. Under the control of the control system, the temperature control device realizes lifting through the lifting system to complete the temperature rise and fall treatment of the sample chamber. The temperature control device adopts an integrated design of a water bath and a heating furnace, and can achieve precise temperature control in different temperature ranges to meet the PCT curve test of hydrogen storage materials. At the same time, a combined scheme of air cooling and water cooling is adopted to quickly raise and lower the temperature, improving the test efficiency of the cycle life of hydrogen storage materials.

[0021] When working and heating up: When the set temperature is in the low temperature zone (less than 90 °C), the heating rod and the chiller work simultaneously. The lifting device 5 controls the temperature control device 3 (the furnace body) to rise, so that the sample chamber is inserted into the copper heat sink. Cold water enters the furnace body from the water inlet and is discharged from the water outlet, taking away the heat of the copper heat sink. At the same time, the heating rod heats the copper heat sink. Under the combined action of the heating rod and the chiller, the temperature of the copper heat sink reaches dynamic equilibrium, and thus the test is carried out in the sample chamber 2. When the set temperature is in the high temperature zone (greater than or equal to 90 °C), the chiller does not work, and the water automatically flows back to the lower chiller from the water inlet and the pipeline under the action of gravity. The heating rod works, and the lifting device 5 controls the temperature control device 3 (the furnace body) to rise, so that the sample chamber is inserted into the copper heat sink. The heating rod heats the copper heat sink, and after the temperature reaches the setting, the test is carried out in the sample chamber 2.

[0022] During working for temperature reduction: First, judge the ambient temperature (the temperature) of the sample chamber 2, receive the temperature transmitted back by the thermocouple. When the temperature transmitted back by the thermocouple is above 200 °C, enter the inflation cooling mode, turn on the inflation device to inflate cold air through the air inlet and discharge it from the air outlet until the temperature reaches the target temperature or 200 °C and then stop inflation; subsequently, automatically enter the chiller cooling mode; when the temperature transmitted back by the thermocouple is below 200 °C, enter the chiller cooling mode, the chiller starts to work, cold water enters from the water inlet and is discharged into the chiller from the water outlet to form a cycle, thereby completing the rapid cooling of the copper heat sink and the sample chamber. After reaching the target temperature, the operation of the cooling module stops, and at the same time, a signal indicating the reaching of the target temperature is fed back to the control system and displayed.

[0023] Application Example 1

[0024] Put 2 g of LaNi5 into the sample chamber and conduct high-temperature activation at 200 °C. The PCT curve hydrogen absorption and desorption temperatures are set at 20 °C. Under the action of the lifting device, the temperature control device rises to make the sample chamber enter the copper heat sink cavity. After the temperature stabilizes for 30 minutes, start the automatic PCT curve test. Since 20 °C is the low-temperature region, the water bath heat preservation method is adopted.

[0025] Application Example 2

[0026] Put 2 g of LaNi5 into the sample chamber and conduct high-temperature activation at 200 °C. The hydrogen absorption temperature for the cycle life test is set at 20 °C, and the desorption temperature is 200 °C. Under the action of the lifting device, the temperature control device rises to make the sample chamber enter the copper heat sink cavity. After the temperature stabilizes for 30 minutes, start the automatic hydrogen absorption curve test. Since 20 °C is the low-temperature region, the water bath heat preservation method is adopted. After hydrogen absorption, the water automatically flows back into the chiller, and the heating rod heats it to 200 °C for desorption. After desorption, air-cooling pneumatic is used to cool the copper heat sink. When the temperature is below 150 °C, the chiller starts to work, and water enters the temperature control device for rapid water cooling. When the temperature reaches 20 °C, the second hydrogen absorption is carried out.

Claims

1. An automatic hydrogen storage sorption instrument with a cyclic life test function, characterized in that, Including: An air path system, an inflation device, a circulating water supply device, a first housing (1), a sample chamber (2), a temperature control device (3), and a lifting device (5). The upper and lower ends of the lifting device (5) are fixed to the first housing (1) and drive the temperature control device (3) to move up and down. The temperature control device (3) includes: a copper heat sink (6), a sample accommodation part (7), an air inlet (8), an air outlet (9), a second housing (10), a water inlet (11), a water outlet (12), a heating rod (13), and a thermocouple (14). A sample accommodation part (7) is opened at the center of the top end of the copper heat sink (6). The copper heat sink (6) and the outer second housing (10) enclose a cylindrical water accommodation cavity. A water inlet (11) communicating with the water accommodation cavity is provided below the side wall of the second housing (10), and a water outlet (12) communicating with the water accommodation cavity is provided above the side wall of the second housing (10). The water inlet (11) and the water outlet (12) are connected to an external circulating water supply device through a circulating water interface (4). A plurality of heating rods (13) are provided in the copper heat sink (6), and a thermocouple (14) connected to a control system is installed in the copper heat sink (6). A sample insertion hole (15) matching the shape and size of the sample accommodation part (7) is opened at the top of the second housing (10). Cooling air channels are uniformly provided in the copper heat sink (6), and both ends of the cooling water channels are respectively connected to the inflation device through the air inlet (8) and the air outlet (9).

2. The fully automatic hydrogen storage adsorber with a cyclic life test function according to claim 1, wherein, The air path system includes: a hydrogen valve (301), a pressure gauge (302), a high-pressure pressure transmitter (303), a pressure regulating valve (305), a gas tank valve (306), a high-pressure tee, a gas storage tee, a low-pressure four-way, a gas storage tank (312), a vent valve (309), a vacuum valve (310), and a check valve (311). The hydrogen source is sequentially connected to a vent outlet through the hydrogen valve (301), the pressure gauge (302), the pressure regulating valve (305), the high-pressure tee, the gas storage tee, the low-pressure four-way, the vent valve (309), and the check valve (311). The third passage of the high-pressure tee is connected to the high-pressure pressure transmitter (303). The third passage of the gas storage tee is connected to the gas storage tank (312) through the gas tank valve (306). The third passage of the low-pressure four-way is connected to the low-pressure pressure transmitter (304) through a low-pressure sensor valve (307). The fourth passage of the low-pressure four-way is connected to the sample chamber (2) through a sample chamber valve (308). A bypass is provided on the pipeline between the vent valve (309) and the low-pressure four-way and is connected to a vacuum pumping device through the vacuum valve (310).

3. The fully automatic hydrogen storage adsorber with a cyclic life test function according to claim 1, characterized in that, The sample chamber (2) is suspended below the top plate of the first housing (1).

4. The fully automatic hydrogen storage adsorber with a cyclic life test function according to claim 3, wherein, The sample chamber (2) is directly opposite to the sample insertion hole (15) of the temperature control device (3).

5. A fully automatic hydrogen storage adsorber with a cyclic life test function according to any one of claims 1 to 4, characterized in that, A hydrogen storage material sample is placed in the sample chamber (2).

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