Splicing multi-channel PEM water electrolysis hydrogen production test equipment

Abstract

The utility model discloses a multi-channel PEM water electrolysis hydrogen production testing device capable of being spliced, which comprises an electrolytic bath testing part, an oxygen discharging pipeline, a hydrogen discharging pipeline, a hydrogen busbar and an oxygen busbar, and the oxygen discharging pipeline comprises a main oxygen discharging pipeline and at least two branch oxygen discharging pipelines. One ends of the at least two branch oxygen discharging pipelines are respectively connected with the main oxygen discharging pipeline, the other ends of the at least two branch oxygen discharging pipelines are respectively connected with at least two oxygen outlets of the electrolytic cell testing part, and one end, far away from the oxygen outlets, of the main oxygen discharging pipeline is connected with the oxygen busbar; one ends of the at least two branch hydrogen discharging pipelines are respectively connected with the main hydrogen discharging pipeline, the other ends of the at least two branch hydrogen discharging pipelines are respectively connected with at least two hydrogen outlets of the electrolytic cell testing part, one end, far away from the hydrogen outlets, of the main hydrogen discharging pipeline is connected with the hydrogen busbar, the oxygen busbar is provided with a first splicing port, and the hydrogen busbar is provided with a second splicing port. And the two test devices can be quickly spliced, so that more electrolytic cells can be tested at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic water technical field, concretely relates to a kind of splicing multi-channel PEM electrolytic water hydrogen production test equipment. BACKGROUND

[0002] Compared with traditional alkaline water electrolysis hydrogen production, PEM (Proton Exchange Membrane) electrolytic water hydrogen production technology has the advantages of high gas output pressure, good purity and large current density, and is one of the water electrolysis hydrogen production technologies with the most development prospects in hydrogen production field. However, the current PEM electrolytic cell has problems such as high cost and short service life. Therefore, it is necessary to continuously test and verify and research and develop to break through the existing technical bottleneck. The early PEM electrolytic water hydrogen production test equipment can only test one electrolytic cell, so the test efficiency is relatively low. With the development of technology, multi-channel PEM electrolytic water hydrogen production test equipment has been developed, which can test at least two electrolytic cells at the same time. However, the two test equipment cannot be spliced to share the hydrogen / oxygen designated discharge point.

[0003] In view of the above-mentioned deficiencies, it is necessary to design a multi-channel PEM electrolytic water hydrogen production test equipment that can be spliced. UTILITY MODEL CONTENT

[0004] Therefore, the technical problem to be solved by the utility model is that the existing multi-channel PEM electrolytic water hydrogen production test equipment cannot splice two test equipment, so as to provide a multi-channel PEM electrolytic water hydrogen production test equipment.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] A multi-channel PEM electrolytic water hydrogen production test equipment that can be spliced, the test equipment includes electrolytic cell test part, oxygen discharge pipeline, hydrogen discharge pipeline, hydrogen bus and oxygen bus, the oxygen discharge pipeline includes main oxygen discharge pipeline and at least two branch oxygen discharge pipelines, one end of at least two branch oxygen discharge pipelines is connected with the main oxygen discharge pipeline respectively, the other end is connected with at least two oxygen outlets of the electrolytic cell test part respectively, one end of the main oxygen discharge pipeline away from the oxygen outlet is connected with the oxygen bus, the hydrogen discharge pipeline includes main hydrogen discharge pipeline and at least two branch hydrogen discharge pipelines, one end of at least two branch hydrogen discharge pipelines is connected with the main hydrogen discharge pipeline respectively, the other end is connected with at least two hydrogen outlets of the electrolytic cell test part respectively, one end of the main hydrogen discharge pipeline away from the hydrogen outlet is connected with the hydrogen bus, the oxygen bus is provided with a first splicing port, and the hydrogen bus is provided with a second splicing port.

[0007] Further, the test device further comprises a water storage heating tank and a water supply pipeline, the water storage heating tank is provided with a water outlet, the water supply pipeline comprises a main water supply pipeline and at least two branch water supply pipelines, one end of the at least two branch water supply pipelines is connected with the main water supply pipeline respectively, and the other end is connected with at least two water inlets of the electrolytic cell test part respectively, one end of the main water supply pipeline away from the branch water supply pipeline is connected with the water outlet, and the water inlet and the oxygen outlet of the water storage heating tank are connected in series on the oxygen exhaust pipeline.

[0008] Further, the test device further comprises a first temperature transmitter connected with the water storage heating tank.

[0009] Further, in the oxygen outlet direction, a first gas-water separator is arranged on the oxygen exhaust pipeline downstream of the water storage heating tank, and / or a second gas-water separator is arranged on the hydrogen exhaust pipeline.

[0010] Further, a flow meter is arranged on the branch water supply pipeline, and / or a water quality detector is arranged on the main water supply pipeline.

[0011] Further, a deionization device is arranged on the main water supply pipeline upstream of the water quality detector.

[0012] Further, the test device further comprises a deionized water tank, the water storage heating tank comprises a water inlet, and the outlet of the deionized water tank is connected with the water inlet through a pipeline.

[0013] Further, the test device further comprises a temperature transmitter connected with the electrolytic cell and a heating rod arranged in the electrolytic cell.

[0014] Further, the test device further comprises a nitrogen blowing pipeline, one end of the nitrogen blowing pipeline is adapted to be connected with nitrogen, and the other end is connected with at least two hydrogen outlets respectively.

[0015] Further, the test device further comprises a hydrogen oxygen analyzer, a hydrogen inlet of the hydrogen oxygen analyzer is connected with the hydrogen exhaust pipeline through a pipeline; and / or,

[0016] The test device further comprises an oxygen hydrogen analyzer, and an oxygen inlet of the oxygen hydrogen analyzer is connected with the oxygen exhaust pipeline through a pipeline.

[0017] The technical scheme of the utility model has the following advantages:

[0018] 1.The multi-channel PEM water electrolysis hydrogen production test equipment provided by the utility model can be spliced, a first splicing port is arranged on the oxygen busbar, a second splicing port is arranged on the hydrogen busbar, therefore, in the test process, when the number of test sites is insufficient, the first splicing ports of the oxygen busbars of two test equipment can be connected together through a hose, one oxygen designated discharge point is shared, the second splicing ports of the hydrogen busbars of two or more test equipment can be connected together through a hose, one hydrogen designated discharge point is shared, and the rapid splicing of the test equipment is realized.

[0019] 2.The multi-channel PEM water electrolysis hydrogen production test equipment provided by the utility model can be spliced, the test equipment further comprises a first temperature transmitter, the first temperature transmitter is connected with the water storage heating tank, and the first temperature transmitter, the control module and the heating element are matched to accurately control the water temperature of the ultrapure water in the water storage heating tank.

[0020] 3.The multi-channel PEM water electrolysis hydrogen production test equipment provided by the utility model can be spliced, the test equipment further comprises a second temperature transmitter and a heating rod, the second temperature transmitter is connected with the electrolytic tank, the heating rod is arranged in the electrolytic tank, and the second temperature transmitter and the heating rod are matched with the control module to accurately control the electrolysis temperature.

[0021] 4.The multi-channel PEM water electrolysis hydrogen production test equipment provided by the utility model can be spliced, the test equipment further comprises a nitrogen purge pipeline, one end of the nitrogen purge pipeline is adapted to be connected with nitrogen, and the other end is connected with at least two hydrogen outlets, in this way, after the test equipment is stopped, the pipeline can be purged to remove hydrogen, and safety is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0023] Figure 1 It is a structure schematic view of the multi-channel PEM water electrolysis hydrogen production test equipment that can be spliced in the embodiments of the utility model.

[0024] EXPLANATION OF REFERENCE NUMERALS:

[0025] 1, deionized water tank; 11, water replenishment pump; 2, water storage and heating tank; 21, first temperature transmitter; 22, circulating pump; 23, deionization device; 24, water quality detector; 3, electrolytic tank; 31, flow meter; 32, second temperature transmitter; 33, heating rod; 41, first gas-water separator; 42, second gas-water separator; 51, oxygen busbar; 511, first splicing port; 512, oxygen electric proportional back pressure valve; 52, hydrogen busbar; 521, second splicing port; 522, hydrogen electric proportional back pressure valve; 61, oxygen in hydrogen analyzer; 62, hydrogen in oxygen analyzer; 7, nitrogen purge pipeline; 91, oxygen designated discharge point; 92, hydrogen designated discharge point; A, water supply pipeline; A0, main water supply pipeline; A1, branch water supply pipeline; B, oxygen discharge pipeline; B0, main oxygen discharge pipeline; B1, branch oxygen discharge pipeline; C, hydrogen discharge pipeline; C0, main hydrogen discharge pipeline; C1, branch hydrogen discharge pipeline. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] As Figure 1 The utility model provides a kind of splicable multi-channel PEM electrolytic water hydrogen production test equipment (hereinafter referred to as test equipment), test equipment includes electrolytic cell test part, oxygen exhaust pipeline B, hydrogen exhaust pipeline C, hydrogen busbar 52 and oxygen busbar 51, oxygen exhaust pipeline B includes main oxygen exhaust pipeline B0 and at least two branch oxygen exhaust pipeline B1, at least two branch oxygen exhaust pipeline B1 one end is connected with main oxygen exhaust pipeline B0 respectively, the other end is connected with the at least two oxygen outlets of electrolytic cell test part respectively, the one end of main oxygen exhaust pipeline B0 far from oxygen outlet is connected with oxygen busbar 51, hydrogen exhaust pipeline C includes main hydrogen exhaust pipeline C0 and at least two branch hydrogen exhaust pipeline C1, at least two branch hydrogen exhaust pipeline C1 one end is connected with main hydrogen exhaust pipeline C0 respectively, the other end is connected with the at least two hydrogen outlets of electrolytic cell test part respectively, the one end of main hydrogen exhaust pipeline C0 far from hydrogen outlet is connected with hydrogen busbar 52, and first splicing port 511 is equipped on oxygen busbar 51, and second splicing port 521 is equipped on hydrogen busbar 52.

[0031] It needs to be explained that electrolytic cell test part includes at least two test sites for installing electrolytic cell 3.In the embodiment, electrolytic cell test part has 8 test sites, and the test of 8 electrolytic cells 3 can be carried out simultaneously, and correspondingly, electrolytic cell test part has 8 water inlets, 8 oxygen outlets and 8 hydrogen outlets.

[0032] Further, oxygen in oxygen busbar 51 is connected to oxygen designated discharge point 91 by pipeline, and hydrogen busbar 52 is connected to hydrogen designated discharge point 92 by pipeline, and "designated discharge point" means that hydrogen and oxygen must be discharged at the designated position.When the number of test sites is insufficient, the first splicing port 511 of the oxygen busbar 51 of two or more test equipment can be connected together by hose, so that two or more oxygen busbars 51 share an oxygen designated discharge point 91, and the second splicing port 521 of the hydrogen busbar 52 of two or more test equipment can be connected together by hose, so that two or more hydrogen busbars 52 share a hydrogen designated discharge point 92, to realize rapid splicing of test equipment.Of course, the first splicing port 511 and the second splicing port 521 are normally closed ports, which are only opened when splicing.

[0033] In the embodiment, the first splicing port 511 and the second splicing port 521 are both two ports, but they can also be other data, which are not limited here.

[0034] Further, the testing device further comprises a water storage heating tank 2 and a water supply pipeline A, the water storage heating tank 2 is provided with a water outlet, the water supply pipeline A comprises a main water supply pipeline A0 and at least two branch water supply pipelines A1, one end of the at least two branch water supply pipelines A1 is connected with the main water supply pipeline A0 respectively, and the other end is connected with at least two water inlets of the electrolytic cell testing part respectively, the main water supply pipeline A0 is connected with the water outlet away from the branch water supply pipeline A1, and the water inlet and the oxygen outlet of the water storage heating tank 2 are connected in series on the oxygen discharge pipeline B. In the embodiment, a circulating pump 22 is arranged on the main water supply pipeline A0, and in addition, a deionization device 23 is arranged on the main water supply pipeline A0 in the water inlet direction, the deionization device 23 is located downstream of the circulating pump 22, and the main water supply pipeline A0 is further provided with a water quality detector 24 downstream of the deionization device 23, so as to ensure that the water quality of the ultrapure water entering the electrolytic cell 3 meets the standard.

[0035] Further, in the oxygen outlet direction, a first gas-water separator 41 is arranged on the oxygen discharge pipeline B downstream of the water storage heating tank 2; and / or, a second gas-water separator 42 is arranged on the hydrogen discharge pipeline C. In the embodiment, the first gas-water separator 41 and the second gas-water separator 42 are arranged simultaneously.

[0036] Further, a flow meter 31 is arranged on the branch water supply pipeline A1, for controlling the water flow entering the corresponding electrolytic cell 3 to be tested.

[0037] Further, the testing device further comprises a deionized water tank 1, the water storage heating tank 2 comprises a water inlet, and the outlet of the deionized water tank 1 is connected with the water inlet through a pipeline. A water supplement pump 11 is arranged on the pipeline between the deionized water tank 1 and the water storage heating tank 2.

[0038] Further, the testing device further comprises a first temperature transmitter 21 connected with the water storage heating tank 2, for detecting the temperature of the water storage heating tank 2. The first temperature transmitter 21 and the heating element (in the embodiment, the heating element is a heating wire in the water storage heating tank 2) cooperate with the control module to accurately control the water temperature of the ultrapure water in the water storage heating tank 2, which is a prior art and will not be described here.

[0039] Further, the testing device further comprises a second temperature transmitter 32 connected with the electrolytic cell 3, for detecting the temperature of the electrolytic cell 3, and a heating rod 33 arranged in the electrolytic cell 3. The second temperature transmitter 32 and the heating rod 33 cooperate with the control module to accurately control the electrolytic temperature, which is a prior art and will not be described here.

[0040] Further, the testing device further comprises a nitrogen purging pipeline 7, one end of the nitrogen purging pipeline 7 is adapted to be connected to nitrogen, and the other end is connected to the at least two hydrogen outlets respectively, so that the pipeline can be purged by hydrogen after the testing device is stopped, and safety is ensured.

[0041] Further, the testing device further comprises an oxygen-hydrogen analyzer 61, and the oxygen inlet of the oxygen-hydrogen analyzer 61 is connected to the oxygen discharging pipeline B through a pipeline, and / or the testing device further comprises a hydrogen-oxygen analyzer 62, and the hydrogen inlet of the hydrogen-oxygen analyzer 62 is connected to the hydrogen discharging pipeline C through a pipeline. In the embodiment, the oxygen-hydrogen analyzer 61 and the hydrogen-oxygen analyzer 62 are provided simultaneously.

[0042] The working process of the multi-channel PEM electrolytic water hydrogen production testing device provided in the embodiment will be introduced below:

[0043] The electrolytic cell 3 to be tested is installed on the test position of the electrolytic cell testing part, and before the device is started, the ultrapure water is extracted from the deionized water tank 1 by the water supplement pump 11, and is sent to the water storage and heating tank 2 through a pipeline. When the water level in the water storage and heating tank 2 reaches the required water level height, the water supplement pump 11 stops working, and at this time, the circulating pump 22 is started, and the ultrapure water in the water storage and heating tank 2 is extracted along the water supply pipeline A, passes through the deionization device 23, the water quality detector 24, and the electrolytic cell 3, and returns to the water storage and heating tank 2, so as to form a closed circulation.

[0044] When the water quality detector 24 detects that the water quality is qualified, the water storage and heating tank 2 heats the ultrapure water in it, and when the first temperature transmitter 21 detects that the temperature of the water storage and heating tank 2 reaches the preset temperature, the heating of the ultrapure water is stopped, and the direct current power supply is started, and the electrolytic cell 3 starts to work. The second temperature transmitter 32 connected to the electrolytic cell 3 detects the temperature of the electrolytic cell 3 and sends a temperature signal to the control module, and the control module controls the working condition of the heating rod 33 according to the temperature signal, so as to maintain the optimal electrolysis temperature.

[0045] The oxygen obtained by electrolysis and ultrapure water return to the water storage and heating tank 2 along the oxygen discharge pipeline B, and first gas-liquid separation is carried out in the water storage and heating tank 2, then the oxygen and part of water vapor continue to enter the first gas-water separator 41 along the oxygen discharge pipeline B to carry out second gas-liquid separation, then the oxygen continues to enter the oxygen converging discharge 51 along the oxygen discharge pipeline B and is discharged to the oxygen designated discharge point 91, the filtered free water is discharged after a certain time, the oxygen electric proportional back pressure valve 512 and the oxygen in hydrogen analyzer 61 are arranged on the oxygen discharge pipeline B between the first gas-water separator 41 and the oxygen converging discharge 51, the system back pressure on the oxygen side can be carried out, and the purity of the oxygen obtained by electrolysis can be detected, the hydrogen obtained by electrolysis and a small amount of water vapor are introduced into the second gas-water separator 42 through the hydrogen discharge pipeline C to carry out gas-liquid separation, then the hydrogen continues to enter the hydrogen converging discharge 52 along the hydrogen discharge pipeline C, and is discharged to the hydrogen designated discharge point 92, the filtered free water is discharged after a certain time, the hydrogen electric proportional back pressure valve 522 and the hydrogen in oxygen analyzer 62 are arranged on the pipeline between the second gas-water separator 42 and the hydrogen converging discharge 52, the system back pressure on the hydrogen side can be carried out, and the purity of the hydrogen obtained by electrolysis can be detected;

[0046] After the equipment is stopped, nitrogen is blown through the nitrogen blowing pipeline 7 to the hydrogen outlet of the electrolytic cell test part, the hydrogen discharge pipeline C, the second gas-water separator 42, the hydrogen converging discharge 52 and the hydrogen designated discharge point 92 to ensure safety.

[0047] When the number of test sites is insufficient, the first splicing port 511 of the oxygen converging discharge 51 of two or even more test devices can be connected together through a hose to share one oxygen designated discharge point 91, and the second splicing port 521 of the hydrogen converging discharge 52 of two or even more test devices can be connected together through a hose to share one hydrogen designated discharge point 92, so that the test device can be quickly expanded.

[0048] The multi-channel PEM electrolytic water hydrogen production test device provided by the utility model can simultaneously carry out test of multiple electrolytic cells 3 and multiple test items, can meet the test requirements of activation test, material selection, durability evaluation and partial sensitivity of the electrolytic cell 3, includes the device capable of carrying out IV curve test of the electrolytic cell 3 and analyzing the influence of electrolytic water flow and temperature on the electrolytic cell 3, and is convenient for quick splicing.

[0049] Obviously, the above embodiments are only examples for clearly illustrating, rather than limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations still fall within the protection scope of the utility model.

Claims

1. A splicable multi-channel PEM electrolytic water hydrogen production test device, characterized in that, The test equipment comprises an electrolytic cell test part, an oxygen exhaust pipeline (B), a hydrogen exhaust pipeline (C), a hydrogen busbar (52) and an oxygen busbar (51), the electrolytic cell test part has at least two test positions for installing electrolytic cells (3), the oxygen exhaust pipeline (B) comprises a main oxygen exhaust pipeline (B0) and at least two branch oxygen exhaust pipelines (B1), one end of the at least two branch oxygen exhaust pipelines (B1) is connected with the main oxygen exhaust pipeline (B0) respectively, and the other end is connected with at least two oxygen outlets of the electrolytic cell test part respectively, one end of the main oxygen exhaust pipeline (B0) far from the oxygen outlets is connected with the oxygen busbar (51), the hydrogen exhaust pipeline (C) comprises a main hydrogen exhaust pipeline (C0) and at least two branch hydrogen exhaust pipelines (C1), one end of the at least two branch hydrogen exhaust pipelines (C1) is connected with the main hydrogen exhaust pipeline (C0) respectively, and the other end is connected with at least two hydrogen outlets of the electrolytic cell test part respectively, one end of the main hydrogen exhaust pipeline (C0) far from the hydrogen outlets is connected with the hydrogen busbar (52), and the oxygen busbar (51) is provided with a first splicing port (511), and the hydrogen busbar (52) is provided with a second splicing port (521).

2. The splicable multi-channel PEM electrolytic water-splitting hydrogen production test apparatus according to claim 1, characterized by, The test equipment further comprises a water storage and heating tank (2) and a water supply pipeline (A), the water storage and heating tank (2) is provided with a water outlet, the water supply pipeline (A) comprises a main water supply pipeline (A0) and at least two branch water supply pipelines (A1), one end of the at least two branch water supply pipelines (A1) is connected with the main water supply pipeline (A0) respectively, and the other end is connected with at least two water inlets of the electrolytic cell test part respectively, one end of the main water supply pipeline (A0) far from the branch water supply pipelines (A1) is connected with the water outlet, and the water oxygen inlet and the oxygen outlet of the water storage and heating tank (2) are connected in series on the oxygen exhaust pipeline (B).

3. The splicable multi-channel PEM electrolytic water-splitting hydrogen production test apparatus of claim 2, wherein, The test equipment further comprises a first temperature transmitter (21), and the first temperature transmitter (21) is connected with the water storage and heating tank (2).

4. The splicable multi-channel PEM water electrolysis hydrogen production test apparatus of claim 2, wherein, In the oxygen exhaust direction, a first gas-water separator (41) is arranged on the oxygen exhaust pipeline (B) downstream of the water storage and heating tank (2); and / or, A second gas-water separator (42) is arranged on the hydrogen exhaust pipeline (C).

5. The splicable multi-channel PEM water electrolysis hydrogen production test apparatus of claim 2, wherein, A flowmeter (31) is arranged on the branch water supply pipeline (A1), and / or a water quality detector (24) is arranged on the main water supply pipeline (A0).

6. The splicable multi-channel PEM electrolytic water-splitting hydrogen production test apparatus of claim 5, wherein, A deionization device (23) is further arranged on the main water supply pipeline (A0) upstream of the water quality detector (24).

7. The splicable multi-channel PEM water electrolysis hydrogen production test apparatus of claim 2, wherein, The test equipment further comprises a deionized water tank (1), the water storage and heating tank (2) comprises a water inlet, and the outlet of the deionized water tank (1) is connected with the water inlet through a pipeline.

8. The splicable multi-channel PEM electrolytic water-splitting hydrogen production test apparatus of any one of claims 1-6, wherein, The test equipment further comprises a second temperature transmitter (32) and a heating rod (33), the second temperature transmitter (32) is connected with the electrolytic cell (3), and the heating rod (33) is arranged in the electrolytic cell (3).

9. The splicable multi-channel PEM electrolytic water-splitting hydrogen production test apparatus of any one of claims 1-6, wherein, The testing device further comprises a nitrogen purging pipeline (7), one end of which is adapted to be connected to nitrogen, and the other end of which is connected to at least two hydrogen outlets respectively.

10. The splicable multi-channel PEM electrolytic water-splitting hydrogen production test apparatus of any one of claims 1-6, wherein, The testing device further comprises an oxygen-hydrogen analyzer (61), an oxygen inlet of which is connected to the oxygen discharging pipeline (B) through a pipeline; and / or, the testing device further comprises a hydrogen-oxygen analyzer (62), a hydrogen inlet of which is connected to the hydrogen discharging pipeline (C) through a pipeline.

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