Comprehensive detection system for air tightness of fuel cell humidifier

Abstract

The utility model relates to the technical field of humidifier air tightness detection, and specifically provides a fuel cell humidifier air tightness comprehensive detection system. The comprehensive detection system comprises a main pipeline, and an air compressor, a switch valve, a pressure sensor and a discharge valve which are sequentially arranged on the main pipeline, the first branch pipeline can be connected with a first inner circulation air hole of the humidifier, the second branch pipeline can be connected with a first outer circulation air hole of the humidifier, the third branch pipeline can be connected with a second outer circulation air hole of the humidifier, and the fourth branch pipeline can be connected with a second inner circulation air hole of the humidifier. The first branch pipeline, the second branch pipeline, the third branch pipeline and the fourth branch pipeline are connected with the main pipeline and are arranged between the pressure sensor and the discharge valve; the second branch pipeline is provided with a first valve assembly; the third branch pipeline is provided with a second valve assembly. Through the comprehensive detection, efficient detection of the air tightness of the humidifier can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to humidifier air tightness detection technical field, concretely relates to a fuel cell humidifier air tightness comprehensive detection system. BACKGROUND

[0002] The humidifier can add water vapor and water droplets into the air into the electric pile, thereby increasing the humidity of the air, and further promoting the proton exchange membrane to maintain a certain humidity and improving its reaction efficiency. In order to ensure that the water vapor and water droplets in the humidifier can be smoothly added to the air into the electric pile, the air tightness of the humidifier, including the outer circulation air tightness and the inner circulation air tightness of the humidifier, needs to be detected.

[0003] As Figure 1 The humidifier 10 is provided with four air holes, which are a first inner circulation air hole 11, a first outer circulation air hole 12, a second outer circulation air hole 13 and a second inner circulation air hole 14. When the inner circulation air tightness is detected, the inner circulation detection system 20 shown in Figure 2 The first outer circulation air hole 12 and the second outer circulation air hole 13 are opened, the first inner circulation air hole 11 is connected to the air compressor 21, and the second inner circulation air hole 14 is closed by closing the exhaust valve 22. At this time, the working of the air compressor 21 can be utilized to pressurize the inner circulation chamber of the humidifier 10 through the first inner circulation air hole 11, and then the switch valve 24 is closed, and the inner circulation air tightness of the humidifier 10 is detected by the pressure change of the pressure sensor 23.

[0004] When the outer circulation air tightness is detected, the inner circulation air tightness of the humidifier 10 can be detected by using the inner circulation detection system 20 first. In the case that there is no leakage in the inner circulation, the outer circulation detection system 30 shown in Figure 3 The second outer circulation air hole 13 and the second inner circulation air hole 14 are closed by closing the exhaust valve 32, and the first inner circulation air hole 11 and the first outer circulation air hole 12 are connected to the air compressor 31. At this time, the working of the air compressor 31 can be utilized to pressurize the outer circulation chamber of the humidifier 10 through the first outer circulation air hole 12, and then the switch valve 34 is closed, and the outer circulation air tightness of the 10 is detected by the pressure change of the pressure sensor 33.

[0005] Therefore, the inner circulation air tightness and the outer circulation air tightness of the humidifier 10 need to be detected by different detection systems, that is, the above-mentioned inner circulation detection system 20 and the outer circulation detection system 30, which easily affects the detection efficiency. UTILITY MODEL CONTENTS

[0006] In view of the defects in the prior art, the fuel cell humidifier air tightness comprehensive detection system is provided, and the technical problems in the related art are solved to some extent.

[0007] To achieve the above object, the technical scheme adopted by the utility model is:

[0008] The humidifier air tightness comprehensive detection system provided by the embodiment of the application comprises a main pipeline, an air compressor, a switch valve, a pressure sensor and a discharge valve which are sequentially arranged on the main pipeline, wherein:

[0009] The main pipeline is connected with a first branch pipeline connectable with a first inner circulation air hole of a humidifier, a second branch pipeline connectable with a first outer circulation air hole of the humidifier, a third branch pipeline connectable with a second outer circulation air hole of the humidifier and a fourth branch pipeline connectable with a second inner circulation air hole of the humidifier; and

[0010] The first branch pipeline, the second branch pipeline, the third branch pipeline and the fourth branch pipeline are arranged between the pressure sensor and the discharge valve at the connection positions of the main pipeline;

[0011] The second branch pipeline is provided with a first valve assembly;

[0012] The third branch pipeline is provided with a second valve assembly.

[0013] Preferably, the first valve assembly and the second valve assembly each comprise a solenoid valve.

[0014] The comprehensive detection system further comprises a valve controller for remotely controlling the opening degree of the solenoid valve.

[0015] Preferably, the valve controller is a host computer.

[0016] Preferably, the valve types of the switch valve and the discharge valve are solenoid valves.

[0017] Preferably, the first branch pipeline is provided with a third valve assembly.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] The fuel cell humidifier air tightness comprehensive detection system provided by the embodiment of the application comprises a main pipeline, an air compressor, an on-off valve, a pressure sensor and a discharge valve arranged in sequence on the main pipeline, wherein the main pipeline is connected with a first branch pipeline connectable with a first internal circulation air hole of a humidifier, a second branch pipeline connectable with a first external circulation air hole of the humidifier, a third branch pipeline connectable with a second external circulation air hole of the humidifier and a fourth branch pipeline connectable with a second internal circulation air hole of the humidifier; the first branch pipeline, the second branch pipeline, the third branch pipeline and the fourth branch pipeline are arranged between the pressure sensor and the discharge valve at the connection position of the main pipeline; the second branch pipeline is provided with a first valve assembly; and the third branch pipeline is provided with a second valve assembly. Therefore, by controlling the opening or closing of the on-off valve, the discharge valve, the first valve assembly and the second valve assembly, the external circulation air tightness and the internal circulation air tightness of the humidifier can be checked, and the pipeline disassembly and assembly caused by switching of the detection system are avoided, so that the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The specific structure diagram of the humidifier is provided in the application.

[0021] Figure 2 The specific structure diagram of the internal circulation detection system is provided in the prior art.

[0022] Figure 3 The specific structure diagram of the external circulation detection system is provided in the prior art.

[0023] Figure 4 The specific structure diagram of the humidifier air tightness comprehensive detection system is provided in the application.

[0024] In the above various diagrams: 10-humidifier; 11-first internal circulation air hole; 12-first external circulation air hole; 13-second external circulation air hole; 14-second internal circulation air hole; 20-internal circulation detection system; 21-air compressor; 22-discharge valve; 23-pressure sensor; 24-on-off valve; 30-external circulation detection system; 31-air compressor; 32-discharge valve; 33-pressure sensor; 34-on-off valve; 40-comprehensive detection system; 41-main pipeline; 42-air compressor; 43-on-off valve; 44-pressure sensor; 45-discharge valve; 46-first branch pipeline; 47-second branch pipeline; 48-third branch pipeline; 49-fourth branch pipeline; 410-valve controller; 471-first valve assembly; 481-second valve assembly; 50-humidifier; 51-first internal circulation air hole; 52-first external circulation air hole; 53-second external circulation air hole; 54-second internal circulation air hole. DETAILED DESCRIPTION

[0025] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] As mentioned earlier, the internal and external air tightness of humidifiers are currently tested using separate internal and external air tightness testing systems, which can easily affect testing efficiency. Specifically, after completing the internal air tightness test, it is necessary to switch to the external air tightness testing system, which involves the disassembly and reassembly of multiple pipes, thus impacting testing efficiency.

[0029] In view of this, embodiments of this application provide a comprehensive airtightness testing system for fuel cell humidifiers. This comprehensive testing system can be used to test the internal and external airtightness of the humidifier, thereby solving the problems in the prior art. Figure 4 The diagram shows the specific structure of the integrated testing system 40, which includes a main pipeline 41, an air compressor 42, a switching valve 43, a pressure sensor 44, and a discharge valve 45, with the air compressor 42, the switching valve 43, the pressure sensor 44, and the discharge valve 45 arranged sequentially on the main pipeline 41.

[0030] The humidifier 50 is provided with four air holes, namely a first inner circulation air hole 51, a first outer circulation air hole 52, a second outer circulation air hole 53, and a second inner circulation air hole 54. The first inner circulation air hole 51 and the second inner circulation air hole 54 form an inner circulation chamber of the humidifier 50, and the air tightness of the inner circulation chamber, i.e., the inner circulation air tightness, needs to be detected. The first outer circulation air hole 52 and the second outer circulation air hole 53 form an outer circulation chamber of the humidifier 50, and the air tightness of the outer circulation chamber, i.e., the outer circulation air tightness, needs to be detected.

[0031] It should be noted that the main pipeline 41 is further connected with a first branch pipeline 46, a second branch pipeline 47, a third branch pipeline 48, and a fourth branch pipeline 49. The first branch pipeline 46 is connected with the first inner circulation air hole 51 of the humidifier 50. The second branch pipeline 47 is connected with the first outer circulation air hole 52 of the humidifier 50. The third branch pipeline 48 is connected with the second outer circulation air hole 53 of the humidifier 50. The fourth branch pipeline 49 is connected with the second inner circulation air hole 54 of the humidifier 50.

[0032] In addition, the connection between the first branch pipeline 46, the second branch pipeline 47, the third branch pipeline 48, and the fourth branch pipeline 49 and the main pipeline 41 is located between the pressure sensor 44 and the discharge valve 45. The second branch pipeline 47 is provided with a first valve assembly 471, and the third branch pipeline 48 is provided with a second valve assembly 481.

[0033] In this way, the air compressor 42 can blow air into the inner circulation chamber of the humidifier 50 through the first branch pipeline 46 and the connected first inner circulation air hole 51 for detecting the inner circulation air tightness. Similarly, the air compressor 42 can blow air into the outer circulation chamber of the humidifier 50 through the second branch pipeline 47 and the connected first outer circulation air hole 52 for detecting the outer circulation air tightness.

[0034] Specifically, when detecting the inner circulation air tightness, the first valve assembly 471 and the second valve assembly 481 can be closed (of course, the first valve assembly 471 and the second valve assembly 481 can also be turned on, and their closing or turning on does not affect the detection of the inner circulation air tightness). The second inner circulation air hole 54 is closed by closing the discharge valve 45. Then, the air compressor 21 and the on-off valve 43 are turned on. At this time, the air compressor 21 is used to blow air into the inner circulation chamber of the humidifier 50 through the first branch pipeline 46 and the connected first inner circulation air hole 51. Then, the air compressor 21 and the on-off valve 43 are turned off. Then, the pressure change of the pressure sensor 44 is observed to determine whether there is a leak in the inner circulation chamber of the humidifier 50, thereby realizing the detection of the inner circulation air tightness.

[0035] Specifically, when detecting the inner circulation air tightness, the first valve assembly 471 and the second valve assembly 481 can be closed (of course, the first valve assembly 471 and the second valve assembly 481 can also be turned on, and their closing or turning on does not affect the detection of the inner circulation air tightness), and the second inner circulation air hole 54 is closed by closing the exhaust valve 45. Then the air compressor 21 and the on-off valve 43 are opened, at this time, the air compressor 21 is used to work, and a certain pressure of air is introduced into the inner circulation chamber of the humidifier 50 through the first branch pipeline 46 and the connected first inner circulation air hole 51, then the air compressor 21 and the on-off valve 43 are closed, and the pressure change of the pressure sensor 44 is observed to determine whether the inner circulation chamber of the humidifier 50 has a leak, so as to realize the detection of the inner circulation air tightness. For example, if the pressure sensor 44 observes that the pressure is basically unchanged or changes little, it means that the inner circulation chamber of the humidifier 50 has no leak or the leak can be ignored, that is, the inner circulation air tightness is better, otherwise, if the pressure sensor 44 observes that the pressure decreases rapidly, it means that the inner circulation chamber of the humidifier 50 has a leak, that is, the inner circulation air tightness is poor.

[0036] After the inner circulation air tightness is detected in the above manner, if the inner circulation air tightness is better, the outer circulation air tightness can be further detected. Specifically, the second inner circulation air hole 54 can be closed by closing the exhaust valve 45, and the first valve assembly 471 is opened and the second valve assembly 481 is closed (of course, the second valve assembly 481 can be opened and the first valve assembly 471 can be closed). Then the air compressor 21 and the on-off valve 43 are opened, at this time, the air compressor 21 is used to work, and a certain pressure of air is introduced into the outer circulation chamber of the humidifier 50 through the second branch pipeline 47 and the connected first outer circulation air hole 52, then the air compressor 21 and the on-off valve 43 are closed, and the pressure change of the pressure sensor 44 is observed to determine whether the outer circulation chamber of the humidifier 50 has a leak, so as to realize the detection of the inner circulation air tightness. For example, since the inner circulation air tightness is better at this time, if the pressure of the pressure sensor 44 is basically unchanged or changes little, it means that the outer circulation chamber of the humidifier 50 has no leak or the leak can be ignored, that is, the outer circulation air tightness is better, otherwise, if the pressure sensor 44 observes that the pressure decreases rapidly, it means that the outer circulation chamber of the humidifier 50 has a leak, that is, the outer circulation air tightness is poor.

[0037] It needs to be further explained that when the comprehensive detection system 40 performs the air tightness detection, the inner circulation air tightness needs to be detected first, and in the case that the inner circulation air tightness is better, the outer circulation air tightness can be accurately detected. In view of this problem, the embodiment of the application can further set a third valve assembly in the first branch pipeline 46. At this time, when the inner circulation air tightness is detected, the third valve assembly can be kept in an open state. After the inner circulation air tightness detection is completed, the third valve assembly can be closed before the outer circulation air tightness detection is performed, so as to isolate the influence of the inner circulation chamber on the outer circulation air tightness detection. At this time, even if the inner circulation chamber leaks, that is, the inner circulation air tightness is poor, it will not affect the detection of the outer circulation air tightness.

[0038] In addition, it needs to be explained that in order to facilitate remote control, the first valve assembly 471 and the second valve assembly 481 each include a solenoid valve in actual application. For example, the first valve assembly 471 is a solenoid valve, and the second valve assembly 481 is also a solenoid valve. Since the solenoid valve can control its opening degree by remote control, the comprehensive detection system 40 provided by the embodiment of the application can further include a valve controller 410, which can be used to remotely control the opening degree of the solenoid valve, including controlling the solenoid valve to be turned on, turned off or adjusted to a certain opening degree, etc. Therefore, the valve controller 410 can be used to remotely control the opening degree of the solenoid valve in the first valve assembly 471 and the second valve assembly 481.

[0039] Of course, in actual application, the valve controller 410 can be a host computer.

[0040] Obviously, in order to facilitate remote control, the valve types of the on-off valve 43 and the discharge valve 45 can also be solenoid valves, and the third valve assembly can also include a solenoid valve, so as to facilitate the valve controller 410 to remotely control these solenoid valves, further improving the detection efficiency of the air tightness.

[0041] The humidifier airtightness comprehensive detection system provided by the embodiment of the application comprises a main pipeline 41, an air compressor 42, an on-off valve 43, a pressure sensor 44 and a discharge valve 45 arranged in sequence on the main pipeline 41, wherein the main pipeline 41 is connected with a first branch pipeline 46 connectable with a first inner circulation air hole 51 of a humidifier 50, a second branch pipeline 47 connectable with a first outer circulation air hole 52 of the humidifier 50, a third branch pipeline 48 connectable with a second outer circulation air hole 53 of the humidifier 50 and a fourth branch pipeline 49 connectable with a second inner circulation air hole 54 of the humidifier 50; the first branch pipeline 46, the second branch pipeline 47, the third branch pipeline 48 and the fourth branch pipeline 49 are arranged between the pressure sensor 44 and the discharge valve 45 at the connection position of the main pipeline 41; the second branch pipeline 47 is provided with a first valve assembly 471; and the third branch pipeline 48 is provided with a second valve assembly 481. Therefore, by controlling the opening or closing of the on-off valve 43, the discharge valve 45, the first valve assembly 471 and the second valve assembly 481, the outer circulation airtightness and the inner circulation airtightness of the humidifier 50 can be checked, the pipeline disassembly and assembly caused by switching of the detection system are avoided, and thus the detection efficiency can be improved.

[0042] The utility model is not limited to the above-mentioned implementation, for ordinary skilled person in the prior art, on the premise of not departing from the principle of the utility model, still can make a number of improvements and refinements, these improvements and refinements are also regarded as the protection scope of the utility model. The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

Claims

1. A comprehensive airtightness testing system for a fuel cell humidifier, characterized in that, include: The main pipeline (41), an air compressor (42), a switching valve (43), a pressure sensor (44), and a discharge valve (45) are sequentially arranged on the main pipeline (41), wherein: The main pipeline (41) is connected to a first branch pipeline (46) that can be connected to the first internal circulation air port (51) of the humidifier (50), a second branch pipeline (47) that can be connected to the first external circulation air port (52) of the humidifier (50), a third branch pipeline (48) that can be connected to the second external circulation air port (53) of the humidifier (50), and a fourth branch pipeline (49) that can be connected to the second internal circulation air port (54) of the humidifier (50); and, The connection points of the first branch pipe (46), the second branch pipe (47), the third branch pipe (48) and the fourth branch pipe (49) with the main pipe (41) are located between the pressure sensor (44) and the discharge valve (45); The second branch pipeline (47) is equipped with a first valve assembly (471); The third branch pipeline (48) is equipped with a second valve assembly (481).

2. The comprehensive detection system according to claim 1, characterized in that, Both the first valve assembly (471) and the second valve assembly (481) include solenoid valves; The integrated detection system also includes a valve controller (410) for remotely controlling the opening degree of the solenoid valve.

3. The integrated testing system according to claim 2, characterized in that, The valve controller (410) is specifically a host computer.

4. The integrated testing system according to claim 2, characterized in that, Both the switching valve (43) and the discharge valve (45) are solenoid valves.

5. The integrated testing system according to claim 1, characterized in that, The first branch pipeline (46) is equipped with a third valve assembly.

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