Oil discharge cooling system of hydrogen storage device

Abstract

The invention relates to the technical field of hydrogen storage, in particular to a hydrogen storage device oil discharge cooling system which comprises an oil inlet pipeline, an oil outlet pipeline, a heat conduction oil furnace, a gas input pipeline, an oil gas discharge pipeline, a collecting device and the like. The two gas input pipelines are respectively communicated with the oil inlet pipeline and the oil outlet pipeline; the first oil gas discharge pipeline is communicated with the oil inlet pipeline; the second oil gas discharge pipeline is communicated with the oil outlet pipeline; the two gas input pipelines and the two oil gas discharge pipelines are all provided with gas control valves; the oil inlet pipeline and the oil outlet pipeline are respectively provided with an oil control valve; the heat-conducting oil discharge pipeline is communicated with a discharge port of the hydrogen storage device and an inlet end of the heat-conducting oil furnace, and a first oil discharge valve is arranged on the heat-conducting oil discharge pipeline. By means of the system, conduction oil in the hydrogen storage device can be discharged in time when hydrogen charging and discharging are finished, the time for cooling the conduction oil to the operation temperature is shortened, cost is reduced, and the turnover time of the hydrogen storage device is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen storage, and in particular to an oil drain cooling system for a hydrogen storage device. Background Art

[0002] At present, in the field of hydrogen energy storage, magnesium-based solid-state hydrogen storage materials have very good industrialization prospects, especially large-capacity solid-state hydrogen storage devices, because of their low cost, small mass fraction, light weight, easy transportation, and great environmental friendliness.

[0003] During the hydrogen charging process, magnesium-based materials need to remove a large amount of reaction heat in a timely manner, and during hydrogen discharge, the heat required for the hydrogen discharge reaction needs to be circulated. Therefore, a heat transfer oil heat exchange pipe is generally set in the large-capacity solid-state hydrogen storage device for the circulation of heat transfer oil to circulate and withdraw the heat of the hydrogen charging and discharge reactions. At the end of hydrogen charging and discharge, the heat transfer oil in the large-capacity solid-state hydrogen storage device needs to be discharged in time to facilitate the transfer of the large-capacity solid-state hydrogen storage device. At present, when the heat transfer oil in the large-capacity solid-state hydrogen storage device is discharged by pumping, there is a great possibility that the pump will be emptied during the pumping, which has a great impact on the pump and affects the life of the pump, thereby increasing the equipment and maintenance costs. Summary of the invention

[0004] The purpose of the present application is to provide an oil discharge cooling system for a hydrogen storage device, which to a certain extent solves the technical problem in the prior art that when a pump is used to discharge the thermal oil in a large-capacity solid hydrogen storage device, there is a high possibility of emptying the pump during the pumping process, which has a great impact on the pump and affects the life of the pump, thereby increasing the equipment and maintenance costs.

[0005] The present application provides a hydrogen storage device oil discharge cooling system, which is applied to a hydrogen storage device, and the hydrogen storage device oil discharge cooling system comprises: an oil inlet pipeline, an oil outlet pipeline, a thermal oil furnace, a first gas input pipeline, a second gas input pipeline, a first oil and gas discharge pipeline, a second oil and gas discharge pipeline, a collection device, and a thermal oil discharge pipeline;

[0006] Wherein, the outlet end of the thermal oil furnace is connected to the inlet end of the thermal oil chamber of the hydrogen storage device via the oil inlet pipeline; the inlet end of the thermal oil furnace is connected to the outlet end of the thermal oil chamber of the hydrogen storage device via the oil outlet pipeline; the first gas input pipeline is connected to the oil inlet pipeline, and the second gas input pipeline is connected to the oil outlet pipeline; the oil inlet pipeline connected between the hydrogen storage device and the first gas input pipeline is connected to the first oil and gas exhaust pipeline; the oil outlet pipeline connected between the hydrogen storage device and the second gas input pipeline is connected to the second oil and gas exhaust pipeline; the first oil and gas exhaust pipeline and the second oil and gas exhaust pipeline are respectively connected to the collecting device;

[0007] The first gas input pipeline, the second gas input pipeline, the first oil and gas exhaust pipeline and the second oil and gas exhaust pipeline are all provided with gas control valves; the oil inlet pipeline connected between the first gas input pipeline and the thermal oil furnace and the oil outlet pipeline connected between the second gas input pipeline and the thermal oil furnace are both provided with oil control valves; the two ends of the thermal oil exhaust pipeline are respectively connected to the discharge port of the hydrogen storage device and the inlet end of the thermal oil furnace, and the thermal oil exhaust pipeline is provided with a first oil exhaust valve.

[0008] In the above technical solution, further, the oil discharge cooling system of the hydrogen storage device also includes a first bypass pipeline and a first discharge valve; wherein the first bypass pipeline is respectively connected to the thermal oil discharge pipeline and the air intake pipeline connected between the oil control valve and the first gas input pipeline; the first discharge valve is arranged on the first bypass pipeline.

[0009] In any of the above technical solutions, further, the oil discharge cooling system of the hydrogen storage device also includes a second bypass pipeline and a second discharge valve; wherein the second bypass pipeline is respectively connected to the thermal oil discharge pipeline and the air intake pipeline connected between the oil control valve and the second gas input pipeline; the second discharge valve is arranged on the second bypass pipeline.

[0010] In any of the above technical solutions, further, the heat transfer oil discharge pipeline includes a first heat transfer oil discharge pipeline and a second heat transfer oil discharge pipeline that are connected; wherein the first heat transfer oil discharge pipeline is connected to the discharge port of the hydrogen storage device; the first bypass pipeline and the second bypass pipeline are both connected to the first heat transfer oil discharge pipeline, and are arranged on a side of the first oil discharge valve away from the hydrogen storage device;

[0011] The second heat transfer oil discharge pipeline is connected to the inlet end of the heat transfer oil furnace, and the second heat transfer oil discharge pipeline is provided with the second oil discharge valve and a one-way valve; the first bypass pipeline and the second bypass pipeline are both provided with auxiliary oil discharge valves.

[0012] In any of the above technical solutions, further, part of the heat transfer oil discharge pipeline located on the first side branch pipeline and the second side branch pipeline close to the hydrogen storage device is a hose.

[0013] In any of the above technical solutions, further, an inlet valve is provided on the oil inlet pipeline connected to the inlet end of the hydrogen storage device through the first oil and gas exhaust pipeline.

[0014] In any of the above technical solutions, further, a portion of the oil inlet pipeline connecting the inlet valve and the first oil and gas exhaust pipeline is a hose.

[0015] In any of the above technical solutions, further, an outlet valve is provided on the oil outlet pipeline that is connected to the outlet end of the hydrogen storage device through the second oil and gas outlet pipeline.

[0016] In any of the above technical solutions, further, a portion of the oil outlet pipeline connecting the outlet valve and the second oil and gas exhaust pipeline is a hose.

[0017] In any of the above technical solutions, further, the oil discharge cooling system of the hydrogen storage device also includes a buffer tank, and the first oil and gas exhaust pipeline and the second oil and gas exhaust pipeline are both connected to the collection device through the buffer tank.

[0018] In any of the above technical solutions, further, the oil discharge cooling system of the hydrogen storage device also includes a coolant carrying device, and the coolant carrying device is used to contain coolant, and the coolant can be sprayed to the buffer tank through the coolant carrying device.

[0019] In any of the above technical solutions, further, a deflation valve is provided on the pipeline connecting the buffer tank and the collecting device.

[0020] In any of the above technical solutions, further, the buffer tank is arranged along the vertical direction, and a sewage outlet is arranged at the bottom of the buffer tank, and the sewage outlet is provided with a sewage valve.

[0021] In any of the above technical solutions, further, the oil discharge cooling system of the hydrogen storage device also includes a first pressure detection component, and the first pressure detection component is arranged in the buffer tank and is used to detect the pressure of the buffer tank.

[0022] In any of the above technical solutions, further, both the first gas input pipeline and the second gas input pipeline are provided with a one-way valve.

[0023] In any of the above technical solutions, further, the oil inlet pipeline is detachably connected to the inlet end of the heat transfer oil chamber of the hydrogen storage device.

[0024] In any of the above technical solutions, further, the oil outlet pipeline is detachably connected to the outlet end of the heat transfer oil chamber of the hydrogen storage device.

[0025] In any of the above technical solutions, further, the heat transfer oil discharge pipeline is detachably connected to the discharge port of the hydrogen storage device.

[0026] In any of the above technical solutions, further, the oil discharge cooling system of the hydrogen storage device also includes a second pressure detection component, and the oil inlet pipeline and the oil outlet pipeline are both provided with the second pressure detection component and are used to detect pressure.

[0027] In any of the above technical solutions, further, the oil drain cooling system of the hydrogen storage device also includes a total gas input pipeline, and the first gas input pipeline and the second gas input pipeline are both connected to the total gas input pipeline.

[0028] Compared with the prior art, the beneficial effects of this application are:

[0029] The use of the oil discharge cooling system of the hydrogen storage device not only ensures that the heat transfer oil in the hydrogen storage device is discharged in time when the hydrogen charging and discharging is completed, but also avoids the problem of pump emptying due to the lack of a pump, thereby reducing the cost of equipment and maintenance, and shortening the entire cooling time to the operating temperature, effectively saving equipment maintenance and operating costs, while effectively shortening the turnover time of the hydrogen storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 An assembly diagram of the oil drain cooling system and the hydrogen storage device provided in the embodiment of the present application;

[0032] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure.

[0033] Reference numerals:

[0034] 100-hydrogen storage device oil discharge cooling system, 1-oil inlet pipeline, 101-first hose, 2-oil outlet pipeline, 201-second hose, 3-thermal oil furnace, 4-first gas input pipeline, 5-second gas input pipeline, 6-first oil and gas exhaust pipeline, 7-second oil and gas exhaust pipeline, 8-collection device, 9-thermal oil exhaust pipeline, 91-first thermal oil exhaust pipeline, 911-third hose, 92-second thermal oil exhaust pipeline, 10-first gas control valve, 11-second gas control valve, 12-third gas control valve, 13-fourth gas control Valve, 14-first oil control valve, 15-second oil control valve, 16-first oil drain valve, 17-first bypass pipeline, 18-first discharge valve, 19-second bypass pipeline, 20-second discharge valve, 21-second oil drain valve, 22-check valve, 25-inlet valve, 26-outlet valve, 27-buffer tank, 271-drain valve, 28-coolant carrying device, 29-vent valve, 30-first pressure detection component, 31-second pressure detection component, 32-total gas input pipeline, 33-hydrogen pipeline, 200-hydrogen storage device. DETAILED DESCRIPTION

[0035] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0036] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0037] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Refer to the following Figure 1 and Figure 2 An oil drain cooling system for a hydrogen storage device according to some embodiments of the present application is described.

[0041] See also Figure 1 and Figure 2 As shown, the embodiment of the present application provides a hydrogen storage device oil exhaust cooling system 100, which is applied to a hydrogen storage device 200. The hydrogen storage device oil exhaust cooling system 100 includes: an oil inlet pipeline 1, an oil outlet pipeline 2, a thermal oil furnace 3, a first gas input pipeline 4, a second gas input pipeline 5, a first oil and gas exhaust pipeline 6, a second oil and gas exhaust pipeline 7, a collecting device 8, and a thermal oil exhaust pipeline 9;

[0042] Among them, the outlet end of the thermal oil furnace 3 is connected to the inlet end of the thermal oil chamber of the hydrogen storage device 200 via the oil inlet pipeline 1; the inlet end of the thermal oil furnace 3 is connected to the outlet end of the thermal oil chamber of the hydrogen storage device 200 via the oil outlet pipeline 2; the first gas input pipeline 4 is connected to the oil inlet pipeline 1, and the second gas input pipeline 5 is connected to the oil outlet pipeline 2; the oil inlet pipeline 1 connected between the hydrogen storage device 200 and the first gas input pipeline 4 is connected to the first oil and gas exhaust pipeline 6; the oil outlet pipeline 2 connected between the hydrogen storage device 200 and the second gas input pipeline 5 is connected to the second oil and gas exhaust pipeline 7; the first oil and gas exhaust pipeline 6 and the second oil and gas exhaust pipeline 7 are respectively connected to the collecting device 8;

[0043] The first gas input pipeline 4, the second gas input pipeline 5, the first oil and gas discharge pipeline 6 and the second oil and gas discharge pipeline 7 are all provided with gas control valves, and in order to distinguish the gas control valves at different positions, they are respectively named as follows: the gas control valve on the first gas input pipeline 4 is the first gas control valve 10, the gas control valve on the first oil and gas discharge pipeline 6 is the second gas control valve 11, the gas control valve on the second gas input pipeline 5 is the fourth gas control valve 13, and the gas control valve on the second oil and gas discharge pipeline 7 is the third gas control valve 12;

[0044] Oil control valves are provided on the oil inlet pipeline 1 connected between the first gas input pipeline 4 and the thermal oil furnace 3 and on the oil inlet pipeline 1 connected between the second gas input pipeline 5 and the thermal oil furnace 3. In order to distinguish the oil control valves at different positions, they are named as follows: the oil control valve provided on the oil inlet pipeline 1 connected between the first gas input pipeline 4 and the thermal oil furnace 3 is the first oil control valve 14, and the oil control valve provided on the oil outlet pipeline 2 connected between the second gas input pipeline 5 and the thermal oil furnace 3 is the second oil control valve 15;

[0045] Both ends of the heat transfer oil discharge pipeline 9 are respectively connected to the discharge port of the hydrogen storage device 200 and the inlet end of the heat transfer oil furnace 3 , and a first oil discharge valve 16 is provided on the heat transfer oil discharge pipeline 9 .

[0046] According to the structure described above, the working process of the oil drain cooling system 100 of the hydrogen storage device provided by the present application is as follows:

[0047] After the hydrogen storage device 200 completes the hydrogen charging and discharging process, the heating system of the thermal oil furnace 3 and the valves on the hydrogen pipeline 33 connected to the hydrogen storage device 200 are closed, the first oil control valve 14 and the second oil control valve 15 on the thermal oil pipeline are closed, the first oil drain valve 16 and the second oil drain valve 21 are opened, the first discharge valve 18 and the second discharge valve 20 are opened, and then the fourth gas control valve 13 on the second gas input pipeline 5 connected to the return oil pipeline is first opened to perform nitrogen pressurized blowing and oil discharge on the thermal oil in the hydrogen storage device 200, repeat several times, and close the fourth gas control valve 13; then open the first gas control valve 10 on the first gas input pipeline 4 connected to the oil inlet pipeline 1 of the thermal oil to perform nitrogen pressurized blowing and oil discharge on the thermal oil in the hydrogen storage device 200, repeat several times, and close the first gas control valve 10. (Since the heat pipe network inside the device is relatively complex, the oil supply main pipe is not the lowest point, and the oil return main pipe is not the highest point, multiple positive and negative air blowing and oil drainage are performed to achieve the purpose of complete drainage).

[0048] After the oil is drained, the second gas control valve 11 and the third gas control valve 12 are opened to allow the heat transfer oil to flow into the collection box, and the nitrogen is discharged into the atmosphere. After the gas discharge is completed, the second gas control valve 11 and the third gas control valve 12 are closed.

[0049] In combination with the above, it can be seen that the hydrogen storage device oil discharge cooling system 100 provided in the present application only uses an inert gas such as nitrogen but not a pump to discharge the thermal oil in the hydrogen storage device 200, and the oil can be collected to avoid entering the atmosphere and endangering the life and health of the operator. In addition, the hydrogen storage device oil discharge cooling system 100 does not use a pump, and can quickly drain the thermal oil in the system in time, thereby avoiding the increase in operation and maintenance costs caused by the solidification of the thermal oil in the system at low temperatures. Moreover, since no pump is used, the problem of pump evacuation is avoided, thereby reducing the cost of equipment and maintenance.

[0050] Further, preferably, Figure 2 As shown, the oil inlet pipeline 1 is detachably connected to the inlet end of the thermal oil chamber of the hydrogen storage device 200; the oil outlet pipeline 2 is detachably connected to the outlet end of the thermal oil chamber of the hydrogen storage device 200; and the thermal oil discharge pipeline 9 is detachably connected to the discharge port of the hydrogen storage device 200. It can be seen that when the hydrogen storage device 200 is finished charging or discharging hydrogen, the hydrogen storage device 200 can be disconnected from the oil inlet pipeline 1, the oil outlet pipeline 2 and the thermal oil discharge pipeline 9, and then the hydrogen storage device 200 can be disassembled from the system for easy transportation to a designated location for use. Of course, it is not limited to the above, and other positions of the air pressure can also be selected as the detachable points, which can be selected according to actual needs.

[0051] In this embodiment, preferably, Figure 2 As shown, the hydrogen storage device oil discharge cooling system 100 also includes a first bypass pipeline 17 and a first discharge valve 18; wherein the first bypass pipeline 17 is respectively connected to the thermal oil discharge pipeline 9 and the intake pipeline connected between the oil control valve and the first gas input pipeline 4; the first discharge valve 18 is arranged on the first bypass pipeline 17.

[0052] According to the structure described above, the first bypass pipeline 17 can be used to drain the heat transfer oil in the oil inlet pipeline 1 between the first gas input pipeline 4 and the first oil control valve 14, and the first discharge valve 18 can be used to control the opening or closing of this pipeline.

[0053] In this embodiment, preferably, Figure 2 As shown, the hydrogen storage device oil discharge cooling system 100 also includes a second bypass pipeline 19 and a second discharge valve 20; wherein the second bypass pipeline 19 is respectively connected to the thermal oil discharge pipeline 9 and the intake pipeline connected between the oil control valve and the second gas input pipeline 5; the second discharge valve 20 is arranged on the second bypass pipeline 19.

[0054] According to the structure described above, the second bypass pipeline 19 can be used to drain the heat transfer oil in the oil outlet pipeline 2 between the second gas input pipeline 5 and the second oil control valve 15, and the second discharge valve 20 can be used to control the opening or closing of this pipeline.

[0055] It should be noted that the first bypass pipeline 17, the first discharge valve 18, the second bypass pipeline 19 and the second discharge valve 20 may not be provided, and the design is based on actual needs.

[0056] In this embodiment, preferably, Figure 2 As shown, the heat transfer oil discharge pipeline 9 includes a first heat transfer oil discharge pipeline 91 and a second heat transfer oil discharge pipeline 92 which are connected to each other; wherein the first heat transfer oil discharge pipeline 91 is connected to the discharge port of the hydrogen storage device 200; the first side branch pipeline 17 and the second side branch pipeline 19 are both connected to the first heat transfer oil discharge pipeline 91, and are arranged on the side of the first oil discharge valve 16 away from the hydrogen storage device 200; the second heat transfer oil discharge pipeline 92 is connected to the inlet end of the heat transfer oil furnace 3, and the second heat transfer oil discharge pipeline 92 is provided with a second oil discharge valve 21 and a one-way valve 22; the first side branch pipeline 17 and the second side branch pipeline 19 are both provided with auxiliary oil discharge valves, and the auxiliary oil discharge valves are used to control the opening or closing of the pipelines.

[0057] According to the structure described above, the thermal oil discharged from the hydrogen storage device 200, the thermal oil discharged from the oil inlet pipeline 1 between the first gas input pipeline 4 and the first oil control valve 14 via the first thermal oil discharge pipeline 91, and the thermal oil discharged from the oil outlet pipeline 2 between the second gas input pipeline 5 and the second oil control valve 15 via the second thermal oil discharge pipeline 92 are all gathered on the first thermal oil discharge pipeline 91, and transported to the thermal oil furnace 3 via the second thermal oil discharge pipeline 92, and a one-way valve 22 is provided on the second thermal oil discharge pipeline 92 to ensure one-way transmission of the thermal oil and avoid backflow.

[0058] In this embodiment, preferably, Figure 2 As shown, part of the heat transfer oil discharge pipeline 9 located on the first side branch pipeline 17 and the second side branch pipeline 19 close to the hydrogen storage device 200 is a hose, namely the third hose 911. That is to say, the pipes on both sides of the third hose 911 are rigid pipes. The third hose 911 is a soft connection structure, which plays a role of buffering, etc., and the third hose 911 can be detachably connected to the rigid pipes on both sides by flanges and bolts, so that it can be used as a disassembly point. Specifically, the third hose 911 is generally detachably connected to the flange on the rigid pipe by bolts through the flange thereon.

[0059] In this embodiment, preferably, Figure 2 As shown, an inlet valve 25 is provided on the oil inlet pipeline 1 which is connected to the inlet end of the hydrogen storage device 200 through the first oil and gas exhaust pipeline 6 .

[0060] According to the structure described above, the inlet valve 25 mainly controls the connection or disconnection between the hydrogen storage device 200 and the oil inlet pipeline 1. Of course, the inlet valve 25 may not be provided, but a valve may be provided at the inlet end of the hydrogen storage device 200 for control.

[0061] In this embodiment, preferably, Figure 2 As shown, a portion of the oil inlet pipeline 1 that is connected to the inlet valve 25 and the first oil and gas discharge pipeline 6 is a hose, namely, the first hose 101. That is, the pipes on both sides of the first hose 101 are rigid pipes. The first hose 101 is a soft connection structure, and the first hose 101 and the rigid pipes on both sides can be detachably connected by flanges and bolts, so as to be used as a disassembly point. Specifically, the first hose 101 is generally detachably connected to the flange on the rigid pipe by bolts through the flange on it. In this embodiment, preferably, as Figure 2 As shown, an outlet valve 26 is provided on the oil outlet pipeline 2 which is connected to the outlet end of the hydrogen storage device 200 through the second oil and gas outlet pipeline 7 .

[0062] According to the structure described above, the outlet valve 26 mainly controls the connection or disconnection between the hydrogen storage device 200 and the oil outlet pipeline 2. Of course, the outlet valve 26 may not be provided, but a valve may be provided at the outlet end of the hydrogen storage device 200 for control.

[0063] In this embodiment, preferably, Figure 2 As shown, a portion of the oil outlet pipeline 2 connected to the outlet valve 26 and the second oil and gas exhaust pipeline 7 is a hose, namely the second hose 201. That is to say, the pipes on both sides of the second hose 201 are rigid pipes. The second hose 201 belongs to a soft connection structure, and the second hose 201 can be detachably connected to the rigid pipes on both sides through flanges and bolts, so that it can be used as a disassembly point. Specifically, the second hose 201 is generally detachably connected to the flange on the rigid pipe through bolts through the flange thereon.

[0064] In this embodiment, preferably, Figure 2 As shown, the hydrogen storage device oil exhaust cooling system 100 also includes a buffer tank 27 , and the first oil and gas exhaust pipeline 6 and the second oil and gas exhaust pipeline 7 are both connected to the collection device 8 through the buffer tank 27 .

[0065] According to the structure described above, the oil-gas mixture discharged from the first oil-gas discharge pipeline 6 and the second oil-gas discharge pipeline 7 can be buffered and cooled in the buffer tank 27, and then introduced into the collecting device 8. Of course, the buffer tank 27 may not be provided, and the specific design is based on actual needs.

[0066] In this embodiment, preferably, Figure 2As shown, the hydrogen storage device oil drain cooling system 100 also includes a coolant carrying device 28 , and the coolant carrying device 28 is used to contain the coolant, and the coolant can be sprayed toward the buffer tank 27 through the coolant carrying device 28 .

[0067] According to the structure described above, a coolant carrying device 28 such as a spray bottle filled with cooling liquid such as cooling water can be used to pour cooling water onto the buffer tank 27 to quickly cool it, so that the gaseous oil is converted into liquid, which is convenient for later storage in a collection box and shortens the entire cooling time to the operating temperature, effectively saving equipment maintenance and operating costs, and effectively shortening the turnover time of the hydrogen storage device 200.

[0068] Further, preferably, the coolant carrying device 28 can be a spray pot. Of course, it is not limited to this. The coolant carrying device 28 can also adopt other structures. For example, the coolant carrying device 28 also includes a bracket, a container, a delivery pipe and a nozzle; wherein the container and the delivery pipe are both arranged on the bracket, and the delivery pipe is arranged around the buffer tank 27, and a plurality of nozzles arranged in sequence and at intervals are arranged on the delivery pipe, and a plurality of nozzles are arranged around the outer circumference of the buffer tank 27, so that the entire circumference of the buffer tank 27 can be cooled, thereby improving the cooling effect and cooling uniformity.

[0069] It should be noted that the aforementioned coolant carrying device 28 may not be provided, depending on actual needs.

[0070] In this embodiment, preferably, Figure 2 As shown, a gas relief valve 29 is provided on the pipeline connecting the buffer tank 27 and the collecting device 8 .

[0071] According to the structure described above, it can be known that the air release valve 29 is mainly used to discharge nitrogen into the atmosphere. Of course, it is not limited to this. The air release valve 29 may not be provided on the pipeline connecting the buffer tank 27 and the collecting device 8. Instead, the oil and nitrogen are directly discharged into the collecting device 8 together, and an exhaust port is opened on the collecting device 8 to discharge the nitrogen into the atmosphere. The specific design is based on actual needs.

[0072] In this embodiment, preferably, Figure 2 As shown, the buffer tank 27 is arranged along the vertical direction, and a sewage outlet is arranged at the bottom of the buffer tank 27, and a sewage valve 271 is arranged at the sewage outlet.

[0073] According to the structure described above, the buffer tube is arranged in the vertical direction to meet the conventional installation and use requirements, and the impurities mixed in the oil and gas can settle to the bottom of the buffer tank 27 under the action of gravity, and then the impurities at the bottom can be discharged by opening the drain valve 271, and after the discharge, the drain valve 271 can also be closed.

[0074] It should be noted that the placement direction of the buffer tank 27 is not limited to the above, and it can also be placed obliquely relative to the vertical direction, or placed along the horizontal direction, etc., depending on actual needs.

[0075] In this embodiment, preferably, Figure 2 As shown, the hydrogen storage device oil discharge cooling system 100 also includes a first pressure detection component 30, and the first pressure detection component 30 is arranged in the buffer tank 27, and is used to detect the pressure of the buffer tank 27, constantly monitor the pressure of the buffer tank 27, and ensure the safety and reliability of the operation.

[0076] In this embodiment, preferably, Figure 2 As shown, both the first gas input pipeline 4 and the second gas input pipeline 5 are provided with a one-way valve 22 .

[0077] According to the structure described above, the function of the one-way valve 22 is to ensure that the gas can only be input into the oil inlet pipeline 1 and the oil outlet pipeline 2 in one direction, and cannot overflow in the reverse direction. Of course, the one-way valve 22 may not be provided, depending on actual needs.

[0078] In this embodiment, preferably, Figure 2 As shown, the hydrogen storage device oil discharge cooling system 100 also includes a second pressure detection component 31, and the oil inlet pipeline 1 and the oil outlet pipeline 2 are both provided with a second pressure detection component 31, and are used to detect pressure, constantly monitor the pressure of the oil inlet pipeline 1 and the oil outlet pipeline 2, and ensure the safety and reliability of the work.

[0079] Further, preferably, one of the second pressure detection structures is arranged on the oil inlet pipeline 1 connected between the first hose 101 and the first oil and gas exhaust pipeline 6, and the other second pressure detection structure is arranged on the oil outlet pipeline 2 connected between the second hose 201 and the second oil and gas exhaust pipeline 7. Of course, it is not limited to this, and the positions of the two second pressure detection components 31 can also be designed according to actual needs.

[0080] In this embodiment, preferably, Figure 2 As shown, the hydrogen storage device oil discharge cooling system 100 also includes a total gas input pipeline 32, and the first gas input pipeline 4 and the second gas input pipeline 5 are both connected to the total gas input pipeline 32, and then only the same gas source is needed to realize the introduction of nitrogen into the first gas input pipeline 4 and the second gas input pipeline 5, saving the gas source. Of course, it is not limited to this, and the aforementioned total gas input pipeline 32 may not be provided, and the first gas input pipeline 4 and the second gas input pipeline 5 may be provided with a separate gas source, or connected to the same gas source through a valve, etc.

[0081] In summary, the detailed working process of the hydrogen storage device oil discharge cooling system 100 provided in the present application is as follows:

[0082] After the hydrogen storage device 200 completes the hydrogen charging and discharging process, the heating system of the thermal oil furnace 3 and the valves on the hydrogen pipeline 33 connected to the hydrogen storage device 200 are closed, the first oil control valve 14 and the second oil control valve 15 on the thermal oil pipeline are closed, the first oil drain valve 16 and the second oil drain valve 21 are opened, the first discharge valve 18 and the second discharge valve 20 are opened, and the inlet valve 25 and the inlet valve 25 are kept open. Then, the fourth gas control valve 13 on the second gas input pipeline 5 connected to the return oil pipeline is first opened to perform nitrogen pressurized blowing and oil discharge on the thermal oil in the hydrogen storage device 200, the process is repeated several times, and the fourth gas control valve 13 is closed; then, the first gas control valve 10 on the first gas input pipeline 4 connected to the oil inlet pipeline 1 of the thermal oil is opened to perform nitrogen pressurized blowing and oil discharge on the thermal oil in the hydrogen storage device 200, the process is repeated several times, and the first gas control valve 10 is closed. (Since the heat pipe network inside the device is relatively complex, the oil supply main pipe is not the lowest point, and the oil return main pipe is not the highest point, multiple positive and negative air blowing and oil drainage are performed to achieve the purpose of complete drainage).

[0083] After the oil is drained, the second gas control valve 11 and the third gas control valve 12 are opened. To enhance the cooling effect, a coolant carrying device 28 filled with cooling water, such as a spray bottle, can be used to pour cooling water onto the buffer tank 27 to cool it. Then, the air release valve 29 is opened to allow the cooled liquid heat transfer oil to be passed into the collection box, and the nitrogen is discharged into the atmosphere. After the air release is completed, the second gas control valve 11 and the third gas control valve 12 are closed.

[0084] Close the inlet valve 25, the outlet valve 26, the first oil drain valve 16 and the second oil drain valve 21. After the temperature drops rapidly to the operable temperature, disconnect the first hose 101, the second hose 201, the third hose 911 and the hydrogen pipeline 33, and remove the hydrogen storage device 200 from the system for easy transportation to a designated location for use.

[0085] In combination with the above, it can be known that the hydrogen storage device oil discharge cooling system 100 provided by the present application only uses an inert gas such as nitrogen but does not use a pump to discharge the thermal oil in the hydrogen storage device 200. A buffer tank 27 is provided when the nitrogen is discharged, and a thermal oil collection device 8 is provided at the end of the nitrogen discharge to cool the residual vaporized thermal oil into liquid and collect it to avoid entering the atmosphere and endangering the life and health of the operator. It can be seen that the use of the hydrogen storage device oil discharge cooling system 100 not only ensures that the thermal oil in the hydrogen storage device 200 is discharged in time at the end of hydrogen charging and discharging, but also shortens the entire cooling time to the operating temperature, effectively saving the equipment maintenance and operation costs, and effectively shortening the turnover time of the hydrogen storage device 200.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydrogen storage device oil discharge cooling system, applied to a hydrogen storage device, characterized in that: The oil discharge cooling system of the hydrogen storage device comprises: an oil inlet pipeline, an oil outlet pipeline, a thermal oil furnace, a first gas input pipeline, a second gas input pipeline, a first oil and gas discharge pipeline, a second oil and gas discharge pipeline, a collecting device and a thermal oil discharge pipeline; Wherein, the outlet end of the thermal oil furnace is connected to the inlet end of the thermal oil chamber of the hydrogen storage device via the oil inlet pipeline; the inlet end of the thermal oil furnace is connected to the outlet end of the thermal oil chamber of the hydrogen storage device via the oil outlet pipeline; the first gas input pipeline is connected to the oil inlet pipeline, and the second gas input pipeline is connected to the oil outlet pipeline; the oil inlet pipeline connected between the hydrogen storage device and the first gas input pipeline is connected to the first oil and gas exhaust pipeline; the oil outlet pipeline connected between the hydrogen storage device and the second gas input pipeline is connected to the second oil and gas exhaust pipeline; the first oil and gas exhaust pipeline and the second oil and gas exhaust pipeline are respectively connected to the collecting device; The first gas input pipeline, the second gas input pipeline, the first oil and gas exhaust pipeline and the second oil and gas exhaust pipeline are all provided with gas control valves; the oil inlet pipeline connected between the first gas input pipeline and the thermal oil furnace and the oil outlet pipeline connected between the second gas input pipeline and the thermal oil furnace are both provided with oil control valves; the two ends of the thermal oil exhaust pipeline are respectively connected to the discharge port of the hydrogen storage device and the inlet end of the thermal oil furnace, and the thermal oil exhaust pipeline is provided with a first oil exhaust valve.

2. The oil drain cooling system for a hydrogen storage device according to claim 1, characterized in that: The oil discharge cooling system of the hydrogen storage device also includes a first side branch pipeline and a first discharge valve; wherein the first side branch pipeline is respectively connected to the thermal oil discharge pipeline and the air intake pipeline connected between the oil control valve and the first gas input pipeline; the first discharge valve is arranged on the first side branch pipeline.

3. The oil drain cooling system for a hydrogen storage device according to claim 2, characterized in that: The oil discharge cooling system of the hydrogen storage device also includes a second bypass pipeline and a second discharge valve; wherein the second bypass pipeline is respectively connected to the thermal oil discharge pipeline and the air intake pipeline connected between the oil control valve and the second gas input pipeline; the second discharge valve is arranged on the second bypass pipeline.

4. The oil drain cooling system for a hydrogen storage device according to claim 3, characterized in that: The heat transfer oil discharge pipeline includes a first heat transfer oil discharge pipeline and a second heat transfer oil discharge pipeline which are connected to each other; wherein the first heat transfer oil discharge pipeline is connected to the discharge port of the hydrogen storage device; the first bypass pipeline and the second bypass pipeline are both connected to the first heat transfer oil discharge pipeline and are arranged on a side of the first oil discharge valve away from the hydrogen storage device; The second heat transfer oil discharge pipeline is connected to the inlet end of the heat transfer oil furnace, and a second oil discharge valve and a one-way valve are arranged on the second heat transfer oil discharge pipeline; auxiliary oil discharge valves are arranged on the first bypass pipeline and the second bypass pipeline.

5. The oil drain cooling system for a hydrogen storage device according to claim 4, characterized in that: Parts of the heat transfer oil discharge pipeline located on the first side branch pipeline and the second side branch pipeline close to the hydrogen storage device are hoses.

6. The oil drain cooling system for a hydrogen storage device according to claim 1, characterized in that: An inlet valve is provided on the oil inlet pipeline which is connected to the inlet end of the hydrogen storage device through the first oil and gas discharge pipeline.

7. The oil drain cooling system for a hydrogen storage device according to claim 6, characterized in that: A portion of the oil inlet pipeline where the inlet valve is connected to the first oil and gas exhaust pipeline is a hose.

8. The oil drain cooling system for a hydrogen storage device according to claim 1, characterized in that: An outlet valve is provided on the oil outlet pipeline which is connected to the outlet end of the hydrogen storage device through the second oil and gas outlet pipeline.

9. The oil drain cooling system for a hydrogen storage device according to claim 8, characterized in that: A portion of the oil outlet pipeline where the outlet valve is connected to the second oil and gas outlet pipeline is a hose.

10. The oil drain cooling system for a hydrogen storage device according to claim 1, characterized in that: The hydrogen storage device oil discharge cooling system further includes a buffer tank, and the first oil and gas discharge pipeline and the second oil and gas discharge pipeline are both connected to the collection device through the buffer tank.

11. The oil drain cooling system for a hydrogen storage device according to claim 10, characterized in that: The hydrogen storage device oil discharge cooling system further comprises a coolant carrying device, and the coolant carrying device is used to contain coolant, and the coolant can be sprayed to the buffer tank through the coolant carrying device; and / or A gas release valve is provided on the pipeline connecting the buffer tank and the collecting device; and / or The buffer tank is arranged along the vertical direction, and a sewage outlet is arranged at the bottom of the buffer tank, and the sewage outlet is provided with a sewage valve; and / or The hydrogen storage device oil discharge cooling system further includes a first pressure detection component, and the first pressure detection component is disposed in the buffer tank and is used to detect the pressure of the buffer tank.

12. The oil drain cooling system for a hydrogen storage device according to any one of claims 1 to 11, characterized in that: The first gas input pipeline and the second gas input pipeline are both provided with a one-way valve; and / or The oil inlet pipeline is detachably connected to the inlet end of the heat transfer oil chamber of the hydrogen storage device; and / or The oil outlet pipeline is detachably connected to the outlet end of the heat transfer oil chamber of the hydrogen storage device; and / or The heat transfer oil discharge pipeline is detachably connected to the discharge port of the hydrogen storage device; and / or The hydrogen storage device oil discharge cooling system further includes a second pressure detection component, and both the oil inlet pipeline and the oil outlet pipeline are provided with the second pressure detection component, and are used to detect pressure; and / or The hydrogen storage device oil drain cooling system also includes a total gas input pipeline, and the first gas input pipeline and the second gas input pipeline are both connected to the total gas input pipeline.

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