Automatic drainage liquid seal device of active test bench
By employing a mechanical structure of buoyancy switches and liquid-sealed pipelines in the fuel cell testing platform, the liquid-sealing device is automatically adjusted, solving the problems of combustible gas leakage caused by liquid level changes and high costs, thus improving safety and reliability.
Patent Information
- Application Number
- CN202510715980.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-11-07
AI Technical Summary
Existing fuel cell testing platforms have issues with tail-end liquid sealing devices. When the liquid level is far below the low-level photoelectric sensor, the water is drained and there is no liquid level in the pipeline, which poses a safety hazard of flammable gas leakage. The devices are also costly and have low reliability due to the delay in the action of the electric valve.
The system employs a drain pipe that includes a water storage section and a drainage section. A buoyancy switch automatically opens or closes the first drain outlet based on changes in liquid level. Combined with a liquid-sealed pipe and a bend pipe section, a liquid-sealing effect is achieved to prevent the leakage of flammable gases. A mechanical structure is used to replace the electric valve, reducing costs and improving reliability.
It achieves improved safety, avoids flammable gas leakage, reduces costs, and improves the reliability of the device through mechanical structure, avoiding false alarm problems caused by electric valve delay.
Smart Images
Figure CN120907005A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of fuel cell technology, and particularly relates to an automatic drainage liquid sealing device of an active test bench. BACKGROUND
[0002] Fuel cell is a kind of high-efficiency and environmentally friendly energy conversion technology, which has a wide application prospect. In order to evaluate the performance of fuel cell, a fuel cell test platform needs to be designed and manufactured. The fuel cell test platform mainly consists of a fuel cell stack, a cell support structure, a flow control system, a temperature control system, a measurement and control system, and auxiliary equipment.
[0003] At present, the tail drainage sealing device of the fuel cell test platform generally adopts the form of an electromagnetic valve cooperating with a photoelectric liquid level meter. The liquid level height is detected by a photoelectric sensor. When the liquid level reaches the high liquid level, the high liquid level photoelectric sensor signal is opened. At this time, the host computer issues an opening instruction of the electric valve. When the liquid level is discharged to the low liquid level, the low liquid level photoelectric sensor signal is closed, and the host computer issues a closing instruction of the electric valve. However, the tail drainage sealing device in the prior art has the following problems: (1) when the liquid level is far below the position of the low liquid level photoelectric sensor, water emptying and no liquid level in the pipeline will occur. For the anode tail drainage, it will cause a certain concentration of flammable gas to leak into the sewer, causing safety hazards; (2) the cost is high; (3) the electric valve may have a motion delay, causing false alarms of the equipment, and the device has low reliability. SUMMARY
[0004] In order to solve the above problems, the purpose of the present application is to provide an automatic drainage liquid sealing device of an active test bench.
[0005] The present application is realized by the following technical solutions: An automatic drainage liquid sealing device of an active test bench, the liquid sealing device comprising: a drainage pipe comprising a water storage part and a drainage part, the water storage part having a first water inlet and a first drainage port, and the water inlet end of the drainage part being in communication with the water storage part through the first drainage port; a buoyancy switch located at the first drainage port, the buoyancy switch being capable of opening or closing the first drainage port with the change of the liquid level of water in the water storage part; a liquid sealing pipeline having a second water inlet, a second drainage port and a return bend section located between the second water inlet and the second drainage port, the second water inlet being in communication with the drainage end of the drainage part, and the second drainage port being in communication with the outside.
[0006] In a possible implementation, one end of the water storage part near the first drainage port is inwardly contracted to form a clamping part, and the buoyancy switch is clamped with the side wall of the clamping part.
[0007] In a possible implementation, the clamping portion is shaped as a V.
[0008] In a possible implementation, the U-shaped portion of the return bend section extends towards one side of the first water outlet.
[0009] In a possible implementation, the first fixing position and the second fixing position are arranged at intervals along the radial direction of the water drainage portion, one end of the liquid seal pipeline is connected to the water drainage portion, and the other end is connected to the first fixing position and the second fixing position in sequence.
[0010] In a possible implementation, two or more return bend sections are arranged between the second water inlet and the second water outlet.
[0011] In a possible implementation, the device comprises a limiting member, and the limiting member penetrates the first water inlet in the width direction of the water storage portion.
[0012] In a possible implementation, the buoyancy switch is spherical.
[0013] In a possible implementation, a liquid level detection device is arranged on the side wall of the water drainage pipeline, the liquid seal device further comprises a controller and an alarm device, the liquid level detection device is electrically connected to the controller, and the controller is electrically connected to the alarm device.
[0014] In a possible implementation, the liquid level detection device comprises a liquid level sensor, and the position of the liquid level sensor is higher than the position of the first water outlet.
[0015] The present application has the following beneficial effects: The automatic drainage liquid seal device of the application comprises a drainage pipe, the drainage pipe comprises a water storage part and a drainage part, the water storage part is provided with a first water inlet and a first drainage port, the water inlet end of the drainage part is communicated with the water storage part through the first drainage port, and the water in the water storage part is drained into the drainage part through the first drainage port; the device further comprises a buoyancy switch located at the first drainage port, as the water in the water storage part accumulates, the buoyancy of the buoyancy switch is greater than its own gravity, and then the first drainage port is opened, and as the water in the water storage part is drained into the drainage part, the buoyancy of the buoyancy switch is less than its own gravity, so that the first drainage port is closed; the device further comprises a second water inlet, a second drainage port and a return bend section located between the second water inlet and the second drainage port, the second water inlet is communicated with the drainage end of the drainage part, the second drainage port is communicated with the outside, and the water in the drainage part can flow into the return bend section and be stored in the return bend section, thereby realizing the effect of liquid seal and avoiding leakage of combustible gas with a certain concentration into the sewer, improving safety, and the device of the application adopts a mechanical structure, without the need for an electric valve and an upper computer and other electric control systems to perform drainage work, which not only avoids the problem that the electric valve may exist delay and may cause equipment false alarm, but also makes the device more reliable, significantly reduces the cost and reduces the volume. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, and the advantages thereof, below, a brief introduction will be given to the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.
[0017] Figure 1 The structure diagram of the automatic drainage liquid seal device of the active test bench provided by the embodiments of the present disclosure is shown in the figure. In the figure, 1 is a drainage pipe, 11 is a water storage part, 12 is a drainage part, 13 is a buffer part, 100 is a first water inlet, 101 is a first drainage port, 102 is a clamping part, 103 is a first fixed position, 104 is a second fixed position, 105 is a V-shaped part, 2 is a buoyancy switch, 3 is a liquid seal pipeline, 301 is a second water inlet, 302 is a second drainage port, 303 is a return bend section, 304 is a drainage pipe section, 4 is a limiting part, 5 is a liquid level detection device, 51 is a liquid level sensor, and 52 is a liquid level meter. DETAILED DESCRIPTION
[0018] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.
[0019] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in other than the order illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or apparatus that includes a series of steps or units need not be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to such processes, methods, products or apparatus.
[0020] The embodiments will be described below with reference to the accompanying drawings, which do not limit the disclosure recited in the claims in any way.
[0021] An automatic drainage liquid sealing device of an active test bench is provided according to an embodiment of the present application, as shown in Figure 1 The liquid sealing device comprises: A drainage pipe 1 comprising a water storage part 11 and a drainage part 12, the water storage part 11 having a first water inlet 100 and a first drainage outlet 101, and the water inlet end of the drainage part 12 being in communication with the water storage part 11 through the first drainage outlet 101; A buoyancy switch 2 located at the first drainage outlet 101, the buoyancy switch 2 being capable of opening or closing the first drainage outlet 101 according to the change of the water level in the water storage part 11; A liquid sealing pipeline 3 having a second water inlet 301, a second drainage outlet 302 and a return bend section 303 between the second water inlet 301 and the second drainage outlet 302, the second water inlet 301 being in communication with the water outlet end of the drainage part 12, and the second drainage outlet 302 being in communication with the outside.
[0022] In some embodiments, as shown in Figure 1 An end of the water storage part 11 close to the first drainage outlet 101 is inwardly contracted to form a clamping part 102, and the buoyancy switch 2 is clamped with the side wall of the clamping part 102. By setting the connection mode of the buoyancy switch 2 and the clamping part 102 as clamping, the buoyancy switch 2 can be opened or closed according to the change of the water level in the water storage part 11.
[0023] In some embodiments, the clamping portion 102 is V-shaped. By setting the clamping portion 102 to be V-shaped, the position of the buoyancy switch 2 in the water storage portion 11 can be better limited, and the problem of the device being disabled due to the buoyancy switch 2 falling into the drainage portion 12 can be avoided.
[0024] In some embodiments, as shown in FIG. 1B, a buffer portion 13 is arranged between the water inlet end of the drainage portion 12 and the first drainage port 101. Figure 1
[0025] Specifically, the length of the buffer portion 13 in the width direction of the drainage portion 12 is less than the diameter of the first water inlet 100.
[0026] In some embodiments, as shown in FIG. 1C, one end of the drainage portion 12 near the first drainage port 101 is inwardly tapered to form a V-shaped portion 105. Figure 1
[0027] In some embodiments, the buoyancy switch 2 is spherical. By setting the buoyancy switch 2 to be spherical, the resistance when the liquid flows can be reduced, so that the buoyancy switch 2 is more sensitive to the rise and fall of the liquid level, and the response speed is fast.
[0028] In some embodiments, a U-shaped portion is arranged on the elbow section 303, and the side of the U-shaped portion facing the first drainage port 101 protrudes. By arranging the U-shaped portion on the elbow section 303, the water in the drainage portion 12 can be collected in the U-shaped portion, achieving a good liquid sealing effect, and at the same time avoiding the problem of flammable gas (such as hydrogen) in the anode tail discharge entering the sewer, causing safety hazards.
[0029] In some embodiments, an S-shaped portion can also be arranged on the elbow section 303, and the side of the S-shaped portion facing the first drainage port 101 protrudes. By arranging the S-shaped portion, more water can be stored in the liquid sealing pipeline 3, improving the liquid sealing effect of the device.
[0030] In some embodiments, two or more elbow sections 303 are arranged between the second water inlet 301 and the second drainage port 302. By arranging two or more elbow sections 303, the water in the drainage portion 12 enters the multiple elbow sections 303 for storage, the sealing effect of the liquid sealing pipeline 3 is better, and the flammable gas is more difficult to leak into the sewer, greatly improving the safety.
[0031] In some embodiments, as shown in FIG. 1E, the liquid sealing pipeline 3 further includes a drainage pipe section 304 between the second water inlet 301 and the second drainage port 302, one end of the drainage pipe section 304 is in communication with the elbow section 303, and the other end is in communication with the outside. Figure 1
[0032] In some embodiments, the liquid sealing pipeline 3 is a PU steel wire hose.
[0033] In some embodiments, as shown in FIG. 1, the liquid sealing device comprises a first fixed position 103 and a second fixed position 104 which are arranged in the radial direction of the drainage part 12, and the liquid sealing pipeline 3 is connected to the drainage part 12 at one end and connected to the first fixed position 103 and the second fixed position 104 in sequence at the other end. Figure 1
[0034] Specifically, the first fixed position 103 and the second fixed position 104 are arranged on the side wall of the drainage part 12.
[0035] Specifically, the connection mode of the liquid sealing pipeline 3 with the first fixed position 103 and the second fixed position 104 can be fixed connection or clamping, and the application does not make specific limitation on the connection mode here.
[0036] In some embodiments, as shown in FIG. 1, the liquid sealing device comprises a limiting piece 4 which penetrates the first water inlet 100 in the width direction of the water storage part 11. By arranging the limiting piece 4, the floating switch 2 is prevented from being washed out from the first water inlet 100, and the stability of the device is improved. Figure 1
[0037] Specifically, the limiting piece 4 is a limiting rod.
[0038] In some embodiments, the liquid sealing device comprises two or more limiting pieces 4 which penetrate the first water inlet 100 in the width direction of the water storage part 11. By arranging multiple limiting pieces 4, the floating switch 2 can be greatly prevented from being washed out from the first water inlet 100, and the stability of the liquid sealing device is further improved.
[0039] In some embodiments, as shown in FIG. 1, a liquid level detection device 5 is arranged on the side wall of the drainage pipe 1, and the liquid sealing device further comprises a controller and an alarm device, the liquid level detection device 5 is electrically connected to the controller, and the controller is electrically connected to the alarm device. By arranging the liquid level detection device 5, the controller and the alarm device, the risk of overflow from the first drainage port 101 due to the liquid level of the water storage part 11 exceeding the preset liquid level is avoided, and the stability of the device is improved. Figure 1
[0040] Specifically, the liquid level detection device 5 comprises a liquid level sensor 51 and a liquid level meter 52, the liquid level meter 52 is electrically connected to the liquid level sensor 51, the liquid level meter 52 is used for detecting the liquid level height of the water storage part 11 and sending the liquid level height to the liquid level sensor 51, the liquid level sensor 51 is used for receiving the liquid level height and outputting the liquid level height information to the controller, and the controller is used for receiving the liquid level height information and controlling the opening and closing of the alarm device according to the liquid level height information.
[0041] Specifically, the liquid level information includes first liquid level information and second liquid level information, the controller is configured to receive the first liquid level information and control the alarm device to be turned off according to the first liquid level information, and the controller is configured to receive the second liquid level information and control the alarm device to be turned on according to the second liquid level information. When the liquid level detection device 5 generates the first liquid level information, it indicates that the liquid level of the water in the water storage part 11 does not exceed the preset liquid level. When the liquid level detection device 5 generates the second liquid level information, it indicates that the liquid level of the water in the water storage part 11 exceeds the preset liquid level, and there is a risk of water in the water storage part 11 overflowing from the first water inlet 100, and it can also indicate that the buoyancy switch 2 is stuck at the first water outlet 101 and thus cannot drain water.
[0042] In some embodiments, the alarm device includes an acoustic alarm unit and a light alarm unit.
[0043] In some embodiments, the acoustic alarm unit is a buzzer, and the light alarm unit is an LED lamp.
[0044] In some embodiments, as shown in FIG. 5, the liquid level detection device 5 includes a liquid level sensor 51, and the position of the liquid level sensor 51 is higher than the position of the first water outlet 101. Through this arrangement, the liquid level sensor 51 can accurately measure the change in the liquid level of the water in the water storage part 11. Figure 1
[0045] Specifically, the liquid level detection device 5 further includes a liquid level gauge 52 connected to the liquid level sensor 51, one end of the liquid level gauge 52 is connected to the side wall of the water storage part 11, and the other end is connected to the side wall of the drainage part 12.
[0046] Specifically, the liquid level sensor 51 is an optical sensor.
[0047] The specific embodiments of the present application are described below based on the above technical solutions.
[0048] Embodiment one An active test bench automatic drainage liquid seal device, comprising a drainage pipe 1, a buoyancy switch 2 in the shape of a sphere, and a liquid seal pipeline 3. The drainage pipe 1 includes a water storage part 11 with a first water inlet 100 and a first water outlet 101, and a drainage part 12. The water inlet end of the drainage part 12 is in communication with the water storage part 11 through the first water outlet 101. The end of the water storage part 11 close to the first water outlet 101 is inwardly tapered to form a V-shaped clamping part 102. The buoyancy switch 2 is clamped with the side wall of the clamping part 102. A buffer part 13 is arranged between the water inlet end of the drainage part 12 and the first water outlet 101. The length of the buffer part 13 in the width direction of the drainage part 12 is less than the diameter of the first water inlet 100. The end of the drainage part 12 close to the first water outlet 101 is inwardly tapered to form a V-shaped part 105.
[0049] The second water inlet 301 of the liquid seal pipeline 3 is connected with the water outlet end of the water discharge part 12, and the second water outlet 302 of the liquid seal pipeline 3 is connected with the outside, and a return bend section 303 is arranged between the second water inlet 301 and the second water outlet 302, and the U-shaped part of the return bend section 303 extends to the side of the first water outlet 101. The liquid seal pipeline 3 further comprises a water discharge pipeline section 304 between the second water inlet 301 and the second water outlet 302, one end of the water discharge pipeline section 304 is connected with the return bend section 303, and the other end is connected with the outside.
[0050] The first fixing position 103 and the second fixing position 104 are arranged at intervals in the radial direction of the water discharge part 12, one end of the liquid seal pipeline 3 is connected with the water discharge part 12, and the other end is sequentially connected with the first fixing position 103 and the second fixing position 104. Specifically, the first fixing position 103 and the second fixing position 104 are arranged at intervals on the side wall of the water discharge part 12.
[0051] The liquid seal device comprises a limiting piece 4, and the limiting piece 4 penetrates the first water inlet 100 in the width direction of the water storage part 11. Specifically, the limiting piece 4 is a limiting rod.
[0052] The working process of the automatic water discharge liquid seal device of the embodiment is as follows: water flows into the water storage part 11 from the first water inlet 100, the water level in the water storage part 11 gradually rises, when the buoyancy of the buoyancy switch 2 is greater than its own gravity, the buoyancy switch 2 is floated to open the first water outlet 101, and water gradually flows into the water discharge part 12, the water level in the water storage part 11 gradually decreases, when the buoyancy of the buoyancy switch 2 is less than its own gravity, the buoyancy switch 2 closes the first water outlet 101, the water in the water discharge part 12 flows into the liquid seal pipeline 3 and is gathered in the U-shaped part of the return bend section 303 for liquid sealing, and as the water in the water discharge part 12 continuously flows into the liquid seal pipeline 3, the water gathered in the U-shaped part flows into the water discharge pipeline section 304 for discharge.
[0053] Embodiment two The embodiment provides an automatic water discharge liquid seal device of an active test bench, which is the same as the condenser of embodiment one, and the differences between the embodiment two and the embodiment one are as follows. The liquid level sensor 51 and the liquid level meter 52 are arranged on the side wall of the water discharge pipeline 1, the liquid level meter 52 is connected with the liquid level sensor 51, one end of the liquid level meter 52 is connected with the side wall of the water storage part 11, and the other end is connected with the side wall of the water discharge part 12. The liquid level meter 52 is electrically connected with the liquid level sensor 51, and the position of the liquid level sensor 51 is higher than that of the first water outlet 101. The liquid seal device further comprises a controller and an alarm device, the liquid level sensor 51 is electrically connected with the controller, and the controller is electrically connected with the alarm device.
[0054] Specifically, the liquid level meter 52 is configured to detect the liquid level height of the water storage part 11 and send the liquid level height to the liquid level sensor 51, the liquid level sensor 51 is configured to receive the liquid level height and output the liquid level height information to the controller, and the controller is configured to receive the liquid level height information and control the opening and closing of the alarm device according to the liquid level height information. Specifically, the liquid level height information includes first liquid level height information and second liquid level height information, the controller is configured to receive the first liquid level height information and control the closing of the alarm device according to the first liquid level height information, and the controller is configured to receive the second liquid level height information and control the opening of the alarm device according to the second liquid level height information.
[0055] The working process of the automatic drainage liquid seal device of the embodiment is as follows: water flows into the water storage part 11 from the first water inlet 100, the liquid level of the water in the water storage part 11 gradually rises, when the buoyant force acting on the buoyancy switch 2 is greater than the gravity of the buoyancy switch 2, the buoyancy switch 2 floats and opens the first drainage port 101, and the water gradually flows into the drainage part 12, the liquid level of the water in the water storage part 11 gradually decreases, when the buoyant force acting on the buoyancy switch 2 is less than the gravity of the buoyancy switch 2, the buoyancy switch 2 closes the first drainage port 101, the water in the drainage part 12 flows into the liquid seal pipeline 3 and is gathered in the U-shaped part of the return bend section 303 for liquid sealing, and with the continuous inflow of the water in the drainage part 12 into the liquid seal pipeline 3, the water gathered in the U-shaped part flows into the drainage pipe section 304 for drainage. In the above drainage process, if the liquid level of the water in the water storage part 11 exceeds the preset liquid level, the liquid level meter 52 detects the liquid level height of the water storage part 11 and sends the liquid level height to the liquid level sensor 51, the liquid level sensor 51 is configured to receive the liquid level height and output the second liquid level height information to the controller, and the controller controls the opening of the alarm device, if the liquid level of the water in the water storage part 11 does not exceed the preset liquid level, the liquid level meter 52 detects the liquid level height of the water storage part 11 and sends the liquid level height to the liquid level sensor 51, the liquid level sensor 51 is configured to receive the liquid level height and output the first liquid level height information to the controller, and the controller controls the closing of the alarm device.
[0056] Although the present application has been described by means of preferred embodiments, the present application is not limited to these embodiments but includes all alternatives falling within the scope of the present application.
[0057] In this document, the terms "front", "rear", "upper", "lower", and the like refer to the positions of the components in the drawings and the positions of the components relative to each other in the drawings, which are only for the purpose of expressing the technical solutions clearly and conveniently. It should be understood that the use of the terms should not limit the scope of the application claimed.
[0058] In the case of no conflict, the features in the above embodiments and the embodiments can be combined with each other.
[0059] The above merely provides the preferred embodiment of the present application, and cannot allude the protection scope of the present application, therefore, any equivalent changes made according to the claims of the present application shall be within the scope of the present application.
Claims
1. An automatic drain fluid seal for an active test stand, comprising: The liquid sealing device comprises: a drain pipe (1) comprising a water storage part (11) and a drain part (12), the water storage part (11) having a first water inlet (100) and a first drain outlet (101), and the water inlet end of the drain part (12) being communicated with the water storage part (11) through the first drain outlet (101); a buoyancy switch (2) located at the first drain outlet (101), the buoyancy switch (2) being capable of opening or closing the first drain outlet (101) with the change of the water level in the water storage part (11); a liquid sealing pipeline (3) having a second water inlet (301), a second drain outlet (302) and a U-bend section (303) located between the second water inlet (301) and the second drain outlet (302), the second water inlet (301) being communicated with the water outlet end of the drain part (12), and the second drain outlet (302) being communicated with the outside.
2. The apparatus of claim 1, wherein, One end of the water storage part (11) near the first drain outlet (101) is inwardly contracted to form a clamping part (102), and the buoyancy switch (2) is clamped with the side wall of the clamping part (102).
3. The apparatus of claim 2, wherein, The clamping part (102) is in V shape.
4. The apparatus of claim 1, wherein, A U-shaped part is arranged on the U-bend section (303), and the U-shaped part extends towards one side of the first drain outlet (101).
5. The apparatus of claim 1, wherein, A first fixing position (103) and a second fixing position (104) are arranged in the radial direction of the drain part (12), one end of the liquid sealing pipeline (3) is communicated with the drain part (12), and the other end is sequentially connected with the first fixing position (103) and the second fixing position (104) respectively.
6. The device of any one of claims 1-5, wherein, Two or more U-bend sections (303) are arranged between the second water inlet (301) and the second drain outlet (302).
7. The device of any one of claims 1-5, wherein, The device comprises a limiting part (4) which penetrates the first water inlet (100) in the width direction of the water storage part (11).
8. The device of any one of claims 1-5, wherein, The buoyancy switch (2) is spherical.
9. The device of any one of claims 1-5, wherein, A water level detection device (5) is arranged on the side wall of the drain pipe (1), the liquid sealing device further comprises a controller and an alarm device, the water level detection device (5) is electrically connected with the controller, and the controller is electrically connected with the alarm device.
10. The apparatus of claim 9, wherein, The water level detection device (5) comprises a water level sensor (51), and the position of the water level sensor (51) is higher than that of the first drain outlet (101).