Water-gas separation device
Through the design of heat exchanger and multi-layer water and gas separation pipelines, combined with liquid level sensors and solenoid valve control, the problem of insufficient water and gas separation in the high-power fuel cell test system is solved, and efficient water and gas separation effect is achieved to ensure the stable operation of the test system.
Patent Information
- Application Number
- CN202422338395.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-23
AI Technical Summary
In high-power operation, the fast gas flow rate in the fuel cell test system takes away a large amount of cooling water, resulting in insufficient separation of water and gas, affecting the test effect.
The combination design of heat exchanger, main water and gas separation pipeline, auxiliary water and gas separation pipeline, auxiliary drainage pipeline and main drainage pipeline is adopted to cool high-temperature gas through the heat exchanger, water and gas separation is performed using centrifugal force, and water discharge is controlled through liquid level sensors and solenoid valves.
It realizes efficient water and gas separation under high power operation, ensures stable operation of the test system, and avoids the impact of insufficient water and gas separation on the test.
Smart Images
Figure CN223263560U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fuel cell testing, in particular to a water-gas separation device. Background Art
[0002] Proton exchange membrane fuel cells are a clean new energy source with the advantages of high conversion efficiency and zero pollution. They have broad application prospects and are an ideal clean energy source. The fuel cell test system mainly provides a stable, safe and convenient test platform for fuel cells. During the test, the hydrogen and air involved in the reaction exchange protons to generate electricity. The oxygen in the air is consumed, and the remaining gas is discharged from the tail end of the fuel cell along with the high-temperature water vapor generated in the process. To this end, the fuel cell test system needs to separate the water and gas mixture at the tail end of the fuel cell. However, high-power fuel cells will produce more water per unit time during the test process. At the same time, the faster gas flow rate under high-power operation will take away more cooling water. If the excess water cannot be effectively handled, it will affect normal testing. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to separate water from gas at a fast gas flow rate under a high-power operation state.
[0004] The utility model solves the above technical problems through the following technical means:
[0005] A water-gas separation device comprises a heat exchanger (1), a main water-gas separation pipe (2), an auxiliary water-gas separation pipe (3), an auxiliary drainage pipe (4), and a main drainage pipe (5); an outlet (12) of the heat exchanger (1) is connected to the main water-gas separation pipe (2), water vapor in the heat exchanger (1) can enter the main water-gas separation pipe (2) tangentially, the top end of the main water-gas separation pipe (2) is connected to the auxiliary water-gas separation pipe (3), the outer wall of the auxiliary water-gas separation pipe (3) is connected to the auxiliary drainage pipe (4), the bottom end of the auxiliary drainage pipe (4) is connected to the main drainage pipe (5), the main drainage pipe (5) is connected to the bottom end of the main water-gas separation pipe (2), and water in the main water-gas separation pipe (2) can be discharged in a controlled manner.
[0006] Beneficial effects: Through the arrangement of the heat exchanger, the main water-gas separation pipe, the auxiliary water-gas separation pipe, the auxiliary drainage pipe and the main drainage pipe, the heat exchanger can cool the high-temperature gas mixture, the main water-gas separation pipe can separate water and gas from the cooled gas mixture by centrifugal force, the auxiliary water-gas separation pipe can perform multiple water-gas separations on the residual gas mixture, the separated water can flow into the main water-gas separation pipe through the auxiliary drainage pipe and the main drainage pipe, the water inside the main water-gas separation pipe can be discharged in a controlled manner, and usually some water will be left in the main water-gas separation pipe for liquid sealing to prevent gas from flowing out from the bottom.
[0007] Furthermore, the heat exchanger (1) is composed of two cavities, the left cavity is ventilated, and the right cavity is ventilated with cooling water, and the two cavities do not contact each other.
[0008] Beneficial effect: The high-temperature gas mixture can be cooled by setting the heat exchanger.
[0009] Furthermore, the heat exchanger (1) is a plate heat exchanger.
[0010] Furthermore, the inlet (11) of the heat exchanger (1) is connected to the tail outlet of the fuel cell, and the outlet (12) of the heat exchanger (1) is vertically connected to the main water-gas separation pipeline (2) through a pipeline.
[0011] Beneficial effect: Through the vertical connection setting, the water vapor in the heat exchanger can enter the main water-gas separation pipeline tangentially.
[0012] Furthermore, the main drainage pipe (5) is made of a transparent material, and liquid level sensors (6) are fixed at the upper and lower parts of the main drainage pipe (5).
[0013] Beneficial effect: Through the setting of the main drainage pipe material and the liquid level sensor, the liquid level height of the main drainage pipe can be read, and then the liquid level height of the main water-gas separation pipe can be read, so as to discharge the water in the main water-gas separation pipe in a controlled manner.
[0014] Furthermore, a drainage solenoid valve (7) is provided on one side of the main water-gas separation pipeline (2), and the drainage solenoid valve (7) is electrically connected to the liquid level sensor (6).
[0015] Beneficial effect: The drain solenoid valve is electrically connected to the liquid level sensor. When the upper liquid level sensor senses the water level, the drain solenoid valve is opened, and when the lower liquid level sensor senses the water level, the drain solenoid valve is closed.
[0016] Furthermore, the auxiliary water-gas separation pipeline (3) comprises a first auxiliary water-gas separation pipeline (31) and a second auxiliary water-gas separation pipeline (32); the bottom end of the first auxiliary water-gas separation pipeline (31) is connected to the main water-gas separation pipeline (2) through a pipeline; the top end of the first auxiliary water-gas separation pipeline (31) is connected to the second auxiliary water-gas separation pipeline (32) through a pipeline; and the top end of the second auxiliary water-gas separation pipeline (32) is connected to the gas tail exhaust pipeline of the test system.
[0017] Beneficial effect: By setting up multiple auxiliary water-gas separation pipelines, the residual gas mixture can be subjected to multiple water-gas separations.
[0018] Furthermore, the first auxiliary water-gas separation pipeline (31) comprises a cartridge (311), a top connecting pipe (312), a bottom connecting pipe (313), and a drainage pipe (314); the interior of the cartridge (311) is hollow; the top end of the cartridge (311) is fixed with the top connecting pipe (312); the bottom end of the cartridge (311) is fixed with the bottom connecting pipe (313); a gap is provided between the top connecting pipe (312) and the bottom connecting pipe (313); a drainage pipe (314) is fixed at the bottom of the cartridge (311); the drainage pipe (314) is connected to the auxiliary drainage pipeline (4); the top end of the top connecting pipe (312) and the bottom end of the bottom connecting pipe (313) are respectively connected to each pipeline.
[0019] Beneficial effect: Through the mutual cooperation of the cartridge, top connecting pipe, bottom connecting pipe and drain pipe, the auxiliary water-gas separation pipeline is designed as a double-layer pipeline, in which the inner pipeline is a discontinuous pipeline, which can increase the contact area and contact time between water and gas and the pipeline. Even when operating under ultra-high power conditions, the large tail discharge flow does not affect the complete separation of water and gas.
[0020] Furthermore, the diameters of the top connecting tube (312) and the bottom connecting tube (313) are both smaller than the diameter of the cartridge (311).
[0021] Beneficial effect: By setting the diameters of the top connecting pipe and the bottom connecting pipe, the contact area and contact time between water vapor and the pipeline can be further increased.
[0022] Furthermore, the second auxiliary water-gas separation pipeline (32) has the same structure as the first auxiliary water-gas separation pipeline (31). BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a front view of a water-gas separation device according to a first embodiment of the present utility model;
[0024] Figure 2 This is a side view of a water-gas separation device according to a first embodiment of the present invention;
[0025] Figure 3 This is a perspective view of the first auxiliary water-gas separation pipeline in the water-gas separation device according to the first embodiment of the present invention. DETAILED DESCRIPTION
[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0027] Example 1
[0028] like Figure 1 As shown, this embodiment provides a water-gas separation device, including a heat exchanger 1, a main water-gas separation pipe 2, an auxiliary water-gas separation pipe 3, an auxiliary drainage pipe 4, a main drainage pipe 5, a liquid level sensor 6, and a drainage solenoid valve 7.
[0029] like Figure 1 、 Figure 2 As shown, the heat exchanger 1 is a prior art. The heat exchanger 1 can be customized according to information such as the tail gas flow, temperature and humidity of the fuel cell. It is mainly composed of two cavities, the left cavity is ventilated, and the right cavity is ventilated with cooling water. The cavities on both sides do not contact each other, and heat exchange is carried out through a special flow channel inside the measuring body to cool the high-temperature gas mixture; the heat exchanger 1 in this embodiment is a plate heat exchanger, the inlet 11 of the heat exchanger 1 is connected to the tail outlet of the fuel cell (not shown), the outlet 12 of the heat exchanger 1 is connected to the main water-gas separation pipe 2 through a pipeline, the top of the main water-gas separation pipe 2 is connected to the auxiliary water-gas separation pipe 3 through a pipeline, and the outer wall of the auxiliary water-gas separation pipe 3 is connected to the setting There is an auxiliary drainage pipe 4, the bottom end of the auxiliary drainage pipe 4 is connected to the main drainage pipe 5, the main drainage pipe 5 is connected to the bottom end of the main water-gas separation pipe 2, the main drainage pipe 5 is made of transparent material, and the upper and lower parts of the main drainage pipe 5 are fixed with liquid level sensors 6, which are used to read the liquid level height of the main drainage pipe 5, and then the liquid level height of the main water-gas separation pipe 2 can be read. A drainage solenoid valve 7 is connected to one side of the main water-gas separation pipe 2. When the upper liquid level sensor 6 senses the water level, the drainage solenoid valve 7 is opened, and when the lower liquid level sensor 6 senses the water level, the drainage solenoid valve 7 is closed, leaving some water in the main water-gas separation pipe 2 for liquid sealing.
[0030] like Figure 1 、 Figure 2As shown, the auxiliary water-gas separation pipeline 3 in the example of this embodiment includes a first auxiliary water-gas separation pipeline 31 and a second auxiliary water-gas separation pipeline 32. The bottom end of the first auxiliary water-gas separation pipeline 31 is connected to the main water-gas separation pipeline 2 through a pipeline, and the top end of the first auxiliary water-gas separation pipeline 31 is connected to the second auxiliary water-gas separation pipeline 32 through a pipeline, and the top end of the second auxiliary water-gas separation pipeline 32 is connected to the gas tail exhaust pipeline of the test system (not shown).
[0031] like Figure 2 、 Figure 3 As shown, the structures of the first auxiliary water-gas separation pipeline 31 and the second auxiliary water-gas separation pipeline 32 are the same. Taking the first auxiliary water-gas separation pipeline 31 as an example, the first auxiliary water-gas separation pipeline 31 includes a cartridge 311, a top connecting pipe 312, a bottom connecting pipe 313, and a drain pipe 314. The interior of the cartridge 311 is hollow, and the top of the cartridge 311 is fixed with a top connecting pipe 312, and the bottom of the cartridge 311 is fixed with a bottom connecting pipe 313. A gap is provided between the top connecting pipe 312 and the bottom connecting pipe 313. The diameters of the top connecting pipe 312 and the bottom connecting pipe 313 are both smaller than the diameter of the cartridge 311. A drain pipe 314 is fixed to the bottom of the cartridge 311, and the top of the top connecting pipe 312 and the bottom of the bottom connecting pipe 313 are respectively connected to each pipeline.
[0032] During use, the plate heat exchanger is fixed inside the test bench through its unique bracket. The inlet of the plate heat exchanger is connected to the tail outlet of the fuel cell, and the outlet is connected to the main water-gas separation pipe 2 using a quick-release clamp connection. The outlet of the auxiliary water-gas separation pipe 3 is then connected to the gas tail outlet pipe of the test system for gas discharge. Liquid level sensors 6 are then installed at the upper and lower locations of the main drainage pipe 5 to read the internal water level. Finally, a drainage solenoid valve 7 is installed to discharge water from the main water-gas separation pipe 2.
[0033] After all the processes are connected, the water and gas separation work at the exhaust port during the fuel cell test can be carried out; when the high-temperature water and gas mixture generated after the fuel cell reaction is completed enters the device, it is quickly cooled by the low-temperature cooling water of the plate heat exchanger, and the high-temperature water vapor contained inside can be condensed to form liquid water. As the gas flows into the main water and gas separation pipeline 2, the cooled gas-liquid mixture enters the main water and gas separation pipeline 2 in a tangential manner. Under the action of centrifugal force, the separated gas and a small amount of liquid water under the high-speed airflow are discharged upward through the pipeline, and a large amount of cooling water is discharged downward along the pipeline; the separated gas and a small amount of liquid water under the high-speed airflow enter the auxiliary water and gas separation pipeline 3 for further water and gas separation under the action of centrifugal force. The auxiliary water and gas separation pipeline 3 is a double-layer pipeline design, in which the inner pipeline is a discontinuous pipeline, which can increase the contact area and contact time between water and gas and the pipeline. Even if it operates under ultra-high power conditions, the large tail discharge flow does not affect the complete separation of water and gas.
[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A water-gas separation device, characterized in that: It comprises a heat exchanger (1), a main water-gas separation pipeline (2), an auxiliary water-gas separation pipeline (3), an auxiliary drainage pipeline (4), and a main drainage pipeline (5); The outlet (12) of the heat exchanger (1) is connected to a main water-gas separation pipe (2), and the water vapor in the heat exchanger (1) can enter the main water-gas separation pipe (2) tangentially. The top of the main water-gas separation pipe (2) is connected to an auxiliary water-gas separation pipe (3), and the outer wall of the auxiliary water-gas separation pipe (3) is connected to an auxiliary drainage pipe (4). The bottom end of the auxiliary drainage pipe (4) is connected to a main drainage pipe (5), and the main drainage pipe (5) is connected to the bottom end of the main water-gas separation pipe (2). The water inside the main water-gas separation pipe (2) can be discharged in a controlled manner.
2. A water-gas separation device according to claim 1, characterized in that: The heat exchanger (1) consists of two cavities, the left cavity is for ventilation, and the right cavity is for cooling water, and the two cavities do not contact each other.
3. The water-gas separation device according to claim 1, characterized in that: The heat exchanger (1) is a plate heat exchanger.
4. The water-gas separation device according to claim 1, characterized in that: The inlet (11) of the heat exchanger (1) is connected to the tail outlet of the fuel cell, and the outlet (12) of the heat exchanger (1) is vertically connected to the main water-gas separation pipeline (2) through a pipeline.
5. The water-gas separation device according to claim 1, characterized in that: The main drainage pipe (5) is made of a transparent material, and liquid level sensors (6) are fixed at the upper and lower parts of the main drainage pipe (5).
6. The water-gas separation device according to claim 5, characterized in that: A drainage solenoid valve (7) is provided on one side of the main water-gas separation pipeline (2), and the drainage solenoid valve (7) is electrically connected to the liquid level sensor (6).
7. The water-gas separation device according to claim 1, characterized in that: The auxiliary water-gas separation pipeline (3) comprises a first auxiliary water-gas separation pipeline (31) and a second auxiliary water-gas separation pipeline (32); the bottom end of the first auxiliary water-gas separation pipeline (31) is connected to the main water-gas separation pipeline (2) via a pipeline; the top end of the first auxiliary water-gas separation pipeline (31) is connected to the second auxiliary water-gas separation pipeline (32) via a pipeline; and the top end of the second auxiliary water-gas separation pipeline (32) is connected to the gas tail exhaust pipeline of the test system.
8. The water-gas separation device according to claim 7, characterized in that: The first auxiliary water-gas separation pipeline (31) comprises a cartridge (311), a top connecting pipe (312), a bottom connecting pipe (313), and a drainage pipe (314). The interior of the cartridge (311) is hollow. The top end of the cartridge (311) is fixed with the top connecting pipe (312), the bottom end of the cartridge (311) is fixed with the bottom connecting pipe (313), a gap is provided between the top connecting pipe (312) and the bottom connecting pipe (313), a drainage pipe (314) is fixed at the bottom of the cartridge (311), the drainage pipe (314) is connected to the auxiliary drainage pipeline (4), and the top end of the top connecting pipe (312) and the bottom end of the bottom connecting pipe (313) are respectively connected to various pipelines.
9. The water-gas separation device according to claim 8, characterized in that: The diameters of the top connecting tube (312) and the bottom connecting tube (313) are both smaller than the diameter of the cartridge (311).
10. A water-gas separation device according to any one of claims 7 to 9, characterized in that: The second auxiliary water-gas separation pipeline (32) has the same structure as the first auxiliary water-gas separation pipeline (31).