CN-121977160-A - Hydrogen storage tank body and hydrogen storage device

Abstract

The invention discloses a hydrogen storage tank body and a hydrogen storage device. The hydrogen storage tank body comprises a hydrogen inlet, a heat exchange medium outlet and a central heat exchange structure, wherein the central heat exchange structure comprises a double spiral pipe and a straight pipe, the phenomenon that local heat concentration exists at the edge of the structure is relieved by the double spiral pipe, the straight pipe is added into the center of the spiral pipe, and the heat dissipation of the central part is increased. The hydrogen storage device comprises a hydrogen storage device body, a plate heat exchanger, a water pump, a hydrogen pipeline system and a circulating water pipeline system, wherein the hydrogen storage device body mainly comprises 12 hydrogen storage tank bodies, a water inlet, a water outlet, an external frame and an inclined support partition plate, the inclined support partition plate can increase the detention time of water flow in the device and reduce the blocking of the water flow in the device, so that the flow velocity reduction degree of the water flow is reduced.

Inventors

• YANG KE
• YANG YIFAN
• WANG ZHIYANG
• WU YIFAN
• FENG BO
• ZHAO JIANHUA

Assignees

• 河海大学

Dates

Publication Date

20260505

Application Date

20260121

Claims (9)

1. 1. The hydrogen storage tank body is characterized by comprising a hydrogen inlet, a heat exchange medium outlet and a central heat exchange structure.
2. 2. The hydrogen storage tank of claim 1 wherein the central heat exchange structure comprises a double spiral tube and a straight tube, the double spiral tube alleviating local heat concentration at the edge of the structure, and the straight tube is added to the center of the spiral tube to increase heat dissipation at the center portion.
3. 3. The hydrogen storage tank of claim 1 wherein the hydrogen inlet is a tank upper surface, the heat exchange medium inlet is a tank upper conduit, and the heat exchange medium outlet is a tank lower conduit.
4. 4. The hydrogen storage tank of claim 1 wherein the outer heat exchange wall and heat exchange tube of the tank are made of 316 stainless steel.
5. 5. The hydrogen storage device is characterized by comprising a hydrogen storage device main body, a plate heat exchanger, a water pump, a hydrogen pipeline system and a circulating water pipeline system. The water pump is used for adjusting the flow rate of the introduced water, and can also enable the water flowing out of the device and the heat exchanger to circulate into the heat exchange tube in the tank body and the external circulating water, the plate heat exchanger is used for cooling the water, and the hydrogen pipeline is used for introducing hydrogen with certain pressure into the tank body.
6. 6. The hydrogen storage device according to claim 5, wherein the hydrogen storage device body is mainly composed of 12 hydrogen storage tanks, a water inlet, a water outlet, an outer frame, and an inclined support partition plate.
7. 7. The hydrogen storage device according to claim 6, wherein the hydrogen storage tank is any one of claims 1 to 4.
8. 8. The hydrogen storage device according to claim 6, wherein the hydrogen storage tanks are uniformly arranged in the hydrogen storage device in a 3x 4 arrangement, and welded to the separator and the outer frame.
9. 9. The hydrogen storage device of claim 5 wherein said inclined support baffles increase residence time of the water stream in the device and reduce the resistance of the water stream in the device to a reduced flow rate.

Description

Hydrogen storage tank body and hydrogen storage device Technical Field The invention relates to the field of solid hydrogen storage, in particular to a hydrogen storage tank body and a hydrogen storage device. Background The hydrogen absorption and desorption reaction of metal hydride involves three aspects of momentum transfer, mass transfer and heat transfer, is a very complex mass and heat transfer process, and plays a vital role in promoting the smooth proceeding of the hydrogen absorption and desorption reaction by taking the hydrogen storage alloy reactor as a carrier of the reaction. An excessively high temperature causes thermal deformation or thermal creep of the hydrogen storage reactor to cause safety problems, and therefore, in order to ensure safety of hydrogen storage, it is necessary to design a vessel having a better heat and mass transfer effect. In recent years, in order to enhance the heat transfer effect of the hydrogen storage reactor, various measures for enhancing heat exchange have been developed, such as adding internal cooling pipes, fin structures, or changing the structural shape of the reactor. The tank body of the central heat exchange structure is the most common structure in the existing solid-state hydrogen storage tank body, and has the advantages of low cost and simple structure, but the situation that the hydrogen storage amount is reduced due to rapid change of heat exists. Wherein, the hydrogen storage container of the spiral tube structure has the best comprehensive hydrogen absorption and desorption performance. But the spiral pipe structure is also a structure with serious temperature concentration phenomenon, and the temperature concentration part is mainly the upper part and the middle part of the tank body far away from the radiating pipe. The existing hydrogen storage device has better overall performance, but still has the phenomenon of approximate triangle temperature concentration on the left side of the partition plate, because the partition plate makes the flow passage of the heat dissipation medium longer, but also blocks the flow of the medium, so that the phenomenon of slow flow velocity occurs on the side far away from the medium, and the concentration of temperature is caused. Disclosure of Invention The invention provides a hydrogen storage tank body and a hydrogen storage device, which effectively improve the temperature concentration phenomenon in the tank body and enhance the cooling effect of the hydrogen storage device. The embodiment of the invention provides a hydrogen storage tank body, which comprises a hydrogen inlet, a heat exchange medium outlet and a central heat exchange structure. In an embodiment according to the present disclosure, the central heat exchange structure includes a double spiral pipe and a straight pipe, the double spiral pipe relieves the local heat concentration phenomenon at the edge of the structure, the straight pipe is added at the center of the spiral pipe, and the heat dissipation of the central portion is increased. In an embodiment according to the present disclosure, the hydrogen inlet is a tank upper surface, the heat exchange medium inlet is a tank upper pipe, and the heat exchange medium outlet is a tank lower pipe. In an embodiment according to the present disclosure, the material selected for the heat exchange wall and the heat exchange tube on the outer side of the tank body is 316 stainless steel. The embodiment of the invention provides a hydrogen storage device which comprises a hydrogen storage device main body, a plate heat exchanger, a water pump, a hydrogen pipeline system and a circulating water pipeline system. The water pump is used for adjusting the flow rate of the introduced water, and can also enable the water flowing out of the device and the heat exchanger to circulate into the heat exchange tube in the tank body and the external circulating water, the plate heat exchanger is used for cooling the water, and the hydrogen pipeline is used for introducing hydrogen with certain pressure into the tank body. In an embodiment according to the present disclosure, the hydrogen storage device body is mainly composed of 12 hydrogen storage tanks, a water inlet, a water outlet, an external frame, and an inclined support partition. In an embodiment according to the present disclosure, the hydrogen storage tanks are uniformly arranged in a3×4 arrangement in the hydrogen storage device and welded to the separator and the external frame. In one embodiment according to the present disclosure, the inclined support baffle may increase the residence time of the water flow in the device and reduce the resistance of the water flow in the device, resulting in a reduced flow rate. The invention has the following beneficial effects: the double-spiral pipe structure improves the temperature concentration phenomenon of the hydrogen storage tank body in the hydrogen absorption process, increases the uniformity of the