Alkaline electrolytic water hydrogen production device test system

Abstract

The utility model belongs to the technical field of hydrogen production by electrolysis of water, and particularly discloses a test system of an alkaline hydrogen production device by electrolysis of water. The test system of the alkaline water electrolysis hydrogen production device comprises an electrolysis unit, a hydrogen-liquid separation unit and an oxygen-liquid separation unit, and further comprises an alkali liquor treatment unit and an alkali storage unit, the alkali storage unit is connected with the alkali liquor treatment unit through a first pipeline, an alkali liquor on-off valve is arranged at an outlet of the alkali storage unit, and a first on-off valve is arranged on the first pipeline; an outlet of the alkali liquor treatment unit is divided into two paths, one path is connected with the electrolysis unit through a second pipeline, and the other path is connected with the alkali storage unit through a third pipeline; an inlet of the fourth pipeline is connected with the electrolysis unit, an outlet of the fourth pipeline is connected with the alkali liquor treatment unit, and a fourth on-off valve is arranged on the fourth pipeline. The test system of the alkaline water electrolysis hydrogen production device has the automatic alkaline liquor supply and collection functions, and the electrolytic bath test can be conveniently carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of water electrolysis hydrogen production, and in particular relates to a testing system for an alkaline water electrolysis hydrogen production device. Background Art

[0002] As a clean, efficient and renewable energy, hydrogen energy has broad application prospects in the energy field. With the rapid development of hydrogen energy, water electrolysis hydrogen production technology has become a research hotspot in the field of energy storage and conversion. As a mainstream water electrolysis technology device, electrolyzer is widely used in hydrogen production, energy storage and other fields.

[0003] Therefore, it is necessary to test the performance of the electrolyzer before using it for production; however, in the existing electrolyzer performance testing system, it is difficult for the testing system to realize the automatic supply and collection of alkali solution; and, after completing a set of electrolyzer performance tests, when the testing system tests the next set of electrolyzers, it is often necessary to manually add alkali solution, and the alkali solution cannot be recovered, thereby failing to realize continuous, stable and efficient testing of the electrolyzer. Therefore, it is of great significance to develop a new type of alkaline water electrolysis hydrogen production device testing system. Utility Model Content

[0004] The utility model aims to provide a testing system for an alkaline water electrolysis hydrogen production device to realize the recovery and utilization of alkaline solution in an electrolytic cell.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A test system for an alkaline water electrolysis hydrogen production device comprises an electrolysis unit, a hydrogen-liquid separation unit and an oxygen-liquid separation unit; the hydrogen-liquid separation unit is connected to the electrolysis unit via a hydrogen transmission pipeline, and the oxygen-liquid separation unit is connected to the electrolysis unit via an oxygen transmission pipeline;

[0007] It also includes an alkali solution treatment unit, an alkali storage unit, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline;

[0008] The alkali storage unit is connected to the inlet of the alkali solution treatment unit through a first pipeline, an alkali solution on-off valve is arranged at the outlet of the alkali storage unit, and a first on-off valve is arranged on the first pipeline;

[0009] The outlet of the alkali solution treatment unit is divided into two routes, one route is connected to the electrolysis unit through a second pipeline, a second on-off valve is arranged on the second pipeline, and the other route is connected to the alkali storage unit through a third pipeline, a third on-off valve is arranged on the third pipeline;

[0010] The inlet of the fourth pipeline is connected to the electrolysis unit, the outlet of the fourth pipeline is connected to the alkali solution treatment unit, and a fourth on-off valve is arranged on the fourth pipeline;

[0011] The hydrogen-liquid separation unit is connected to the alkali liquid treatment unit through a fifth pipeline, and the oxygen-liquid separation unit is connected to the alkali liquid treatment unit through a sixth pipeline.

[0012] Preferably, the alkali solution treatment unit comprises an alkali solution circulation pump, a first circulation on-off valve, an alkali solution heat exchanger, a filter pipeline, a second circulation on-off valve, an alkali solution filter and a third circulation on-off valve;

[0013] The alkali liquid circulation pump and the circulation on-off valve are both arranged at the inlet of the alkali liquid heat exchanger. The outlet of the alkali liquid heat exchanger is connected to the inlet of the alkali liquid filter through a filter pipeline. The second circulation valve is arranged at the inlet of the alkali liquid filter, and the third circulation on-off valve is arranged at the outlet of the alkali liquid filter.

[0014] Preferably, the inlet of the fourth pipeline and the outlet of the second pipeline are combined into a seventh pipeline, and the inlet of the seventh pipeline is connected to the electrolysis unit;

[0015] The outlet of the fourth pipeline and the outlet of the first pipeline are combined into an eighth pipeline, and the inlet of the eighth pipeline is connected to the alkali solution treatment unit.

[0016] Preferably, the outlet of the fifth pipeline and the outlet of the sixth pipeline are combined into a ninth pipeline, the outlet of the ninth pipeline is connected to the alkali solution treatment unit, and the ninth pipeline is provided with a fifth on-off valve;

[0017] Preferably, liquid level meters are provided in both the hydrogen-liquid separation unit and the oxygen-liquid separation unit.

[0018] Preferably, it also includes a hydrogen processing unit and an oxygen processing unit;

[0019] The hydrogen treatment unit includes a hydrogen alkali washing tower and a hydrogen condenser; the hydrogen alkali washing tower is connected to the hydrogen-liquid separation unit, and the hydrogen condenser is connected to the hydrogen alkali washing tower; a sixth on-off valve is provided at the outlet of the hydrogen condenser;

[0020] The oxygen processing unit comprises an oxygen alkali washing tower and an oxygen condenser; wherein the oxygen alkali washing tower is connected to the oxygen-liquid separation unit, and the oxygen condenser is connected to the oxygen alkali washing tower; a seventh on-off valve is arranged at the outlet of the oxygen condenser.

[0021] Preferably, it also includes a water replenishment unit, a tenth pipeline and an eleventh pipeline;

[0022] A water supply pipeline is arranged at the outlet of the water supply unit, and a water supply pump and a water supply valve are arranged on the water supply pipeline. The outlet of the water supply pipeline is divided into two routes, one route passes through the tenth pipeline to the hydrogen alkali washing tower, and the other route is connected to the oxygen alkali washing tower through the eleventh pipeline.

[0023] Preferably, the alkali solution filter is also connected to an eighth on-off valve, and a collecting device for collecting impurities is received outside the eighth on-off valve.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model discloses an alkaline water electrolysis hydrogen production device testing system with automatic alkaline solution supply and collection functions, and conveniently circulates and transports the alkaline solution to the electrolytic cell.

[0026] The alkali liquid separated from the hydrogen-liquid separation unit, the oxygen-liquid separation unit, the hydrogen treatment unit and the oxygen treatment unit in the electrolyzer can also be transported to the alkali liquid treatment unit for treatment, and further transported to the electrolyzer for further recycling.

[0027] When a group of electrolytic cells is tested, the alkali liquid in the electrolytic cells can be transported to the alkali liquid treatment unit for treatment. The alkali liquid after the alkali liquid treatment unit can be transported to the alkali storage unit for storage for use in the next group of electrolytic cells. The tested electrolytic alkali liquid can be quickly recovered to achieve continuous, stable and efficient testing of the electrolytic cells, avoiding the errors and inefficiencies caused by traditional manual liquid addition and collection methods.

[0028] The alkaline water electrolysis hydrogen production device test system provided by the utility model has the characteristics of simple operation and easy maintenance, can shorten the test cycle and improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural layout diagram of a test system for an alkaline water electrolysis hydrogen production device in an embodiment of the utility model;

[0030] 1-first pipeline, 2-second pipeline, 3-third pipeline, 4-fourth pipeline, 5-fifth pipeline, 6-sixth pipeline, 7-seventh pipeline, 8-eighth pipeline, 9-ninth pipeline, 10-tenth pipeline, 11-eleventh pipeline;

[0031] 101 - first on-off valve, 202 - second on-off valve, 303 - third on-off valve, 404 - fourth on-off valve, 505 - fifth on-off valve, 606 - sixth on-off valve, 707 - seventh on-off valve, 808 - eighth on-off valve;

[0032] 12-electrolysis unit, 13-hydrogen-liquid separation unit, 14-oxygen-liquid separation unit, 15-alkali storage unit, 16-alkali solution treatment unit, 17-liquid level meter, 18-water replenishment unit, 19-hydrogen alkali washing tower, 20-hydrogen condenser, 21-oxygen alkali washing tower, 22-oxygen condenser;

[0033] 131-hydrogen delivery pipeline, 132-oxygen delivery pipeline, 133-alkali solution on-off valve;

[0034] 161-alkali solution circulation pump, 162-first circulation on-off valve, 163-alkali solution heat exchanger, 164-filtration pipeline, 165-alkali solution filter, 166-second circulation on-off valve, 167-third circulation on-off valve; 181-water supply pump, 182-water supply valve, 183-water supply pipeline. DETAILED DESCRIPTION

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

[0036] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] like Figure 1As shown, a test system for an alkaline water electrolysis hydrogen production device includes an electrolysis unit 12, a hydrogen-liquid separation unit 13 and an oxygen-liquid separation unit 14; the hydrogen-liquid separation unit 13 is connected to the electrolysis unit 12 via a hydrogen transmission pipeline 131, and the oxygen-liquid separation unit 14 is connected to the electrolysis unit 12 via an oxygen transmission pipeline 132.

[0042] In this embodiment, the electrolysis unit 12 can produce hydrogen and oxygen by electrolyzing alkaline solution (electrolyte), and the electrolysis unit 12 specifically adopts an electrolytic cell device.

[0043] The hydrogen-liquid separation unit 13 can separate the hydrogen contained in the alkaline solution. The hydrogen-liquid separation unit 13 specifically adopts a hydrogen-liquid separation tank.

[0044] The oxygen-liquid separation unit 14 can separate the oxygen contained in the alkaline solution. The oxygen-liquid separation unit 14 specifically adopts an oxygen-liquid separation tank.

[0045] The alkali storage unit 15 is used to store and provide alkali solution, and the alkali storage unit 15 is specifically a alkali solution tank.

[0046] The alkaline water electrolysis hydrogen production device testing system further includes an alkaline solution processing unit 16 , an alkali storage unit 15 , a first pipeline 1 , a second pipeline 2 , a third pipeline 3 and a fourth pipeline 4 .

[0047] The alkali liquid tank is connected to the inlet of the alkali liquid treatment unit 16 through the first pipeline 1, and an alkali liquid on-off valve 133 is provided at the outlet of the alkali liquid tank, and a first on-off valve 101 is provided on the first pipeline 1; the alkali liquid on-off valve 133 is used to control the circulation of alkali liquid in the alkali liquid tank (the inflow and outflow of alkali liquid); the first on-off valve 101 is used to control the circulation of alkali liquid on the first pipeline 1.

[0048] The outlet of the alkali solution treatment unit 16 is divided into two routes, one of which is connected to the electrolytic cell through the second pipeline 2, on which a second on-off valve 202 is provided, and the second on-off valve 202 is used to control the circulation of the alkali solution on the second pipeline 2; the other route is connected to the alkali solution tank through the third pipeline 3, on which a third on-off valve 303 is provided, and the third on-off valve 303 is used to control the circulation of the alkali solution on the third pipeline 3.

[0049] The inlet of the fourth pipeline 4 is connected to the electrolysis unit 12 , the outlet of the fourth pipeline 4 is connected to the alkali solution treatment unit 16 , and a fourth on-off valve 404 is provided on the fourth pipeline 4 , and the fourth on-off valve 404 is used to control the circulation of the alkali solution on the fourth pipeline 4 .

[0050] The hydrogen-liquid separation unit 13 is connected to the alkali solution treatment unit 16 via the fifth pipeline 5 , and the oxygen-liquid separation unit 14 is connected to the alkali solution treatment unit 16 via the sixth pipeline 6 .

[0051] Specifically, the alkali solution treatment unit 16 includes an alkali solution circulation pump 161 , a first circulation on-off valve 162 , an alkali solution heat exchanger 163 , a filter pipeline 164 , a second circulation on-off valve 166 , an alkali solution filter 165 and a third circulation on-off valve 167 .

[0052] The alkali liquid circulation pump 161 and the first circulation on-off valve 162 are both arranged at the inlet of the alkali liquid heat exchanger 163. The outlet of the alkali liquid heat exchanger 163 is connected to the inlet of the alkali liquid filter 165 through the filter pipeline 164. The second circulation on-off valve 166 is arranged at the inlet of the alkali liquid filter 165. The third circulation on-off valve 167 is arranged at the outlet of the alkali liquid filter 165.

[0053] In this embodiment, the alkali solution circulation pump 161 provides necessary power for the circulation of the alkali solution, so as to achieve stable circulation and transportation of the alkali solution in the test system, thereby improving the test efficiency.

[0054] The alkali solution heat exchanger 163 can heat the alkali solution to the required electrolysis temperature and keep the alkali solution temperature stable.

[0055] The alkali solution filter 165 can effectively remove impurities in the alkali solution, maintain the purity of the alkali solution, and ensure the smooth progress of the electrolysis process.

[0056] The first circulation on-off valve 162 is used to control the flow of alkali liquid entering the alkali liquid heat exchanger 163 , the second circulation is used to control the flow entering the alkali liquid filter 165 , and the third circulation on-off valve 167 is used to control the flow out of the alkali liquid filter 165 .

[0057] In this embodiment, the alkali liquid filter 165 is also connected to an eighth on-off valve 808, and the eighth on-off valve 808 is externally connected to a collection device for collecting impurities. The eighth on-off valve 808 can discharge impurities collected in the alkali liquid filter 165 to prevent the impurities from clogging the alkali liquid filter 165.

[0058] In this embodiment, in order to improve the efficiency of alkali solution circulation and simplify the pipeline structure, the inlet of the fourth pipeline 4 and the outlet of the second pipeline 2 are combined into the seventh pipeline 7, and the inlet of the seventh pipeline 7 is connected to the electrolysis unit 12;

[0059] The outlet of the fourth pipeline 4 and the outlet of the first pipeline 1 are combined into an eighth pipeline 8 , and the inlet of the eighth pipeline 8 is connected to the alkali solution treatment unit 16 .

[0060] The outlet of the fifth pipeline 5 and the outlet of the sixth pipeline 6 are combined into a ninth pipeline 9, the outlet of the ninth pipeline 9 is connected to the alkali liquid treatment unit 16, the ninth pipeline 9 is provided with a fifth on-off valve 505, the fifth on-off valve 505 controls the flow of the alkali liquid from the ninth pipeline 9 into the alkali liquid treatment unit 16, wherein the alkali liquid of the ninth pipeline 9 is separated from the hydrogen-liquid separation unit 13 and the oxygen-liquid separation unit 14, thereby realizing the recycling of the alkali liquid.

[0061] In this embodiment, a liquid level meter 17 is provided in both the hydrogen-liquid separation tank and the oxygen-liquid separation tank. The liquid level meter 17 is used to monitor the liquid level height in the hydrogen-liquid separation tank and the oxygen-liquid separation tank, thereby ensuring the safety and stability of the operation of the alkaline water electrolysis hydrogen production device test system. When the liquid level meter 17 shows that the liquid level in the hydrogen-liquid separation tank and the oxygen-liquid separation tank is lower than the set liquid level, the alkali storage tank can replenish alkali solution into the electrolytic cell by controlling the alkali solution on-off valve 133 (the alkali solution will flow into the electrolytic cell only after being treated by the alkali solution treatment unit 16).

[0062] The alkaline water electrolysis hydrogen production device testing system also includes a hydrogen processing unit and an oxygen processing unit.

[0063] The hydrogen processing unit includes a hydrogen alkali washing tower 19 and a hydrogen condenser 20; the hydrogen alkali washing tower 19 is connected to the hydrogen-liquid separation tank, and the hydrogen condenser 20 is connected to the hydrogen alkali washing tower 19; a sixth on-off valve 606 is provided at the outlet of the hydrogen condenser 20, and the hydrogen treated by the hydrogen condenser 20 can be discharged and collected through the sixth on-off valve 606.

[0064] The hydrogen alkali washing tower 19 is used to wash the alkali liquid contained in the hydrogen to remove impurities and improve the purity of the hydrogen; the hydrogen condenser 20 purifies the washed hydrogen by further cooling and separation. The alkali liquid separated from the hydrogen is transported to the alkali liquid treatment unit 16 through the fifth pipeline 5 and the ninth pipeline 9.

[0065] The oxygen processing unit includes an oxygen alkali washing tower 21 and an oxygen condenser 22; wherein, the oxygen alkali washing tower 21 is connected to the oxygen-liquid separation tank, and the oxygen condenser 22 is connected to the oxygen alkali washing tower 21; a seventh on-off valve 707 is provided at the outlet of the oxygen condenser 22, and the oxygen processed by the oxygen condenser 22 can be discharged and collected through the seventh on-off valve 707.

[0066] The oxygen alkali washing tower 21 is used to wash the alkali contained in the oxygen to remove impurities and improve the purity of the oxygen; the oxygen condenser 22 purifies the washed oxygen by further cooling and separation. The alkali separated from the oxygen is transported to the alkali treatment unit 16 through the sixth pipeline 6 and the ninth pipeline 9.

[0067] The alkaline water electrolysis hydrogen production device testing system further includes a water replenishment unit 18 , a tenth pipeline 10 and an eleventh pipeline 11 .

[0068] A water replenishment pipeline 183 is provided at the outlet of the water replenishment unit 18, and a water replenishment pump 181 and a water replenishment valve 182 are provided on the water replenishment pipeline 183. The outlet of the water delivery pipeline is divided into two routes, one route passes through the tenth pipeline 10 to the hydrogen alkali washing tower 19, and the other route is connected to the oxygen alkali washing tower 21 through the eleventh pipeline 11.

[0069] The water replenishment unit 18 can transport water to the hydrogen alkali washing tower 19 and the oxygen alkali washing tower 21 to ensure the normal operation of the hydrogen alkali washing tower 19 and the oxygen alkali washing tower 21 and provide necessary water resources for the washing process.

[0070] The working process of the alkaline water electrolysis hydrogen production device test system is as follows:

[0071] First, open the alkali liquid on-off valve 133 and the first on-off valve 101, and the alkali liquid in the alkali liquid tank passes through the first pipeline 1, the eighth pipeline 8, the alkali liquid circulation pump 161, the first circulation on-off valve 162, the alkali liquid heat exchanger 163 (the alkali liquid heat exchanger 163 can heat the alkali liquid), the second circulation on-off valve 166, the alkali liquid filter 165 (the alkali liquid filter 165 can filter impurities in the alkali liquid), the third circulation on-off valve 167, the second on-off valve 202, the second pipeline 2 and the seventh pipeline 7 into the electrolytic cell.

[0072] The electrolytic cell electrolyzes the alkali liquid and produces hydrogen and oxygen. The hydrogen is transported to the hydrogen-liquid separation tank through the hydrogen transmission pipeline 131, and the oxygen is transported to the oxygen-liquid separation tank through the oxygen transmission pipeline 132. The hydrogen separated in the hydrogen-liquid separation tank is successively processed by the hydrogen alkali washing tower 19 and the hydrogen condenser 20, and then output and collected through the sixth on-off valve 606. The alkali liquid separated by the hydrogen-liquid separation tank, the hydrogen alkali washing tower 19 and the hydrogen condenser 20 enters the alkali liquid treatment unit 16 through the fifth pipeline 5, the ninth pipeline 9 and the fifth on-off valve 505. After the alkali liquid heat exchanger 163 in the alkali liquid treatment unit 16 heats the alkali liquid and the alkali liquid filter 165 filters the alkali liquid, the alkali liquid enters the electrolytic cell through the second on-off valve 202, the second pipeline 2 and the seventh pipeline 7.

[0073] At the same time, the oxygen separated in the oxygen-liquid separation tank is processed in turn by the oxygen alkali washing tower 21 and the oxygen condenser 22, and then output and collected through the seventh on-off valve 707; the alkali liquid separated by the oxygen-liquid separation tank, the oxygen alkali washing tower 21 and the oxygen condenser 22 enters the alkali liquid treatment unit 16 through the sixth pipeline 6, the ninth pipeline 9 and the fifth on-off valve 505. After the alkali liquid heat exchanger 163 in the alkali liquid treatment unit 16 heats the alkali liquid and the alkali liquid filter 165 filters the alkali liquid, the alkali liquid passes through the second on-off valve 202, the second pipeline 2 and the seventh pipeline 7 and enters the electrolytic cell.

[0074] At this time, the third on-off valve 303 and the fourth on-off valve 404 are both in a closed state.

[0075] When a group of water electrolysis hydrogen production devices (electrolyzers) completes the test, the alkaline solution in the electrolyzers is recovered; at this time, the third on-off valve 303 and the fourth on-off valve 404 are opened, and the second on-off valve 202 is closed.

[0076] The alkali liquid in the electrolytic cell enters the alkali liquid treatment unit 16 through the seventh pipeline 7, the fourth pipeline 4, the fourth on-off valve 404 and the eighth pipeline 8 in sequence. After the alkali liquid heat exchanger 163 in the alkali liquid treatment unit 16 heats the alkali liquid and the alkali liquid filter 165 filters the alkali liquid, the alkali liquid enters the alkali liquid tank through the third pipeline 3 and the third on-off valve 303, completing the recovery of the alkali liquid.

[0077] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the utility model of a test system for an alkaline water electrolysis hydrogen production device.

[0078] Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims

1. A test system for an alkaline water electrolysis hydrogen production device, comprising an electrolysis unit, a hydrogen-liquid separation unit and an oxygen-liquid separation unit; the hydrogen-liquid separation unit is connected to the electrolysis unit through a hydrogen transmission pipeline, and the oxygen-liquid separation unit is connected to the electrolysis unit through an oxygen transmission pipeline; It is characterized in that It also includes an alkali solution treatment unit, an alkali storage unit, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline; The alkali storage unit is connected to the inlet of the alkali solution treatment unit through a first pipeline, an alkali solution on-off valve is arranged at the outlet of the alkali storage unit, and a first on-off valve is arranged on the first pipeline; The outlet of the alkali solution treatment unit is divided into two routes, one route is connected to the electrolysis unit through a second pipeline, a second on-off valve is arranged on the second pipeline, and the other route is connected to the alkali storage unit through a third pipeline, a third on-off valve is arranged on the third pipeline; The inlet of the fourth pipeline is connected to the electrolysis unit, the outlet of the fourth pipeline is connected to the alkali solution treatment unit, and a fourth on-off valve is arranged on the fourth pipeline; The hydrogen-liquid separation unit is connected to the alkali liquid treatment unit through a fifth pipeline, and the oxygen-liquid separation unit is connected to the alkali liquid treatment unit through a sixth pipeline.

2. The alkaline water electrolysis hydrogen production device testing system according to claim 1, characterized in that: The alkali solution treatment unit comprises an alkali solution circulation pump, a first circulation on-off valve, an alkali solution heat exchanger, a filtering pipeline, a second circulation on-off valve, an alkali solution filter and a third circulation on-off valve; The alkali liquid circulation pump and the first circulation on-off valve are both arranged at the inlet of the alkali liquid heat exchanger. The outlet of the alkali liquid heat exchanger is connected to the inlet of the alkali liquid filter through a filter pipeline. The second circulation on-off valve is arranged at the inlet of the alkali liquid filter, and the third circulation on-off valve is arranged at the outlet of the alkali liquid filter.

3. The alkaline water electrolysis hydrogen production device testing system according to claim 1, characterized in that: The inlet of the fourth pipeline and the outlet of the second pipeline are combined into a seventh pipeline, and the seventh pipeline is connected to the electrolysis unit; The outlet of the fourth pipeline and the outlet of the first pipeline are combined into an eighth pipeline, and the eighth pipeline is connected to the alkali solution treatment unit.

4. The alkaline water electrolysis hydrogen production device testing system according to claim 1, characterized in that: The outlet of the fifth pipeline and the outlet of the sixth pipeline are combined into a ninth pipeline, the ninth pipeline is connected to the alkali solution treatment unit, and the ninth pipeline is provided with a fifth on-off valve.

5. The alkaline water electrolysis hydrogen production device testing system according to claim 1, characterized in that: Liquid level gauges are provided in both the hydrogen-liquid separation unit and the oxygen-liquid separation unit.

6. The alkaline water electrolysis hydrogen production device testing system according to claim 1, characterized in that: Also included is a hydrogen processing unit and an oxygen processing unit; The hydrogen treatment unit includes a hydrogen alkali washing tower and a hydrogen condenser; the hydrogen alkali washing tower is connected to the hydrogen-liquid separation unit, and the hydrogen condenser is connected to the hydrogen alkali washing tower; a sixth on-off valve is provided at the outlet of the hydrogen condenser; The oxygen processing unit comprises an oxygen alkali washing tower and an oxygen condenser; wherein the oxygen alkali washing tower is connected to the oxygen-liquid separation unit, and the oxygen condenser is connected to the oxygen alkali washing tower; a seventh on-off valve is arranged at the outlet of the oxygen condenser.

7. The alkaline water electrolysis hydrogen production device testing system according to claim 6, characterized in that: It also includes a water replenishment unit, a tenth pipeline, and an eleventh pipeline; A water replenishment pipeline is provided at the outlet of the water replenishment unit, and a water replenishment pump and a water replenishment valve are provided on the water replenishment pipeline. The outlet of the water delivery pipeline is divided into two routes, one route passes through the tenth pipeline hydrogen alkali washing tower, and the other route is connected to the oxygen alkali washing tower through the eleventh pipeline.

8. The alkaline water electrolysis hydrogen production device testing system according to claim 2, characterized in that: The alkali liquid filter is also connected to an eighth on-off valve, and a collecting device for collecting impurities is received outside the eighth on-off valve.

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