Hydrogen production electrolytic cell for testing electrode and diaphragm

Abstract

The invention discloses a hydrogen production electrolytic cell for testing electrodes and diaphragms.The hydrogen production electrolytic cell comprises a frame, an electrolytic cell assembly is installed on the frame, the electrolytic cell assembly comprises supporting frames arranged in pairs, grooves are formed in the two corresponding sides of each supporting frame, and lap joint rods penetrate through the grooves in the corresponding sides of the supporting frames on the two sides; a plurality of small electrolysis chambers are arranged in the area between the lap joint rods located between the supporting frames on the two sides, a pole frame supporting block is arranged in each small electrolysis chamber in a penetrating mode, the pole frame supporting blocks stretching out of the two sides of each small electrolysis chamber are in lap joint with the lap joint rods on the corresponding sides respectively, and push plates are arranged on the outer sides of the small electrolysis chambers on the edges respectively. A pushing bolt is connected in the supporting frame and penetrates through the supporting frame in the axial direction, one end, extending into the inner side of the supporting frame, of the pushing bolt is connected with a nut, and after the small electrolysis chamber is assembled on the supporting frame, the pushing bolt is used for pushing the pushing plate, the small electrolysis chamber is extruded through the pushing plate, and sealing is achieved. The test result is more comprehensive, disassembly and assembly are convenient and simple, and test data are accurate.

Description

Technical Field

[0001] The invention relates to an electrolytic cell, in particular to a hydrogen-producing electrolytic cell for electrode and diaphragm testing. Background Art

[0002] Most of the electrolytic cells in the prior art are small circular electrolytic cells, which have the following problems: the assembly form is complicated and requires special tools for disassembly and assembly, which is not friendly to test equipment that is frequently disassembled; the sealing form is a polytetrafluoroethylene gasket, which achieves a sealing effect by filling the micro-concave and convex surface through plastic deformation, but the sealing gasket must be replaced every time it is disassembled and assembled; the assembly of the electrolytic chamber requires strict positioning tools, and if the positioning is not good, it is easy to cause leakage or hydrogen and oxygen cross-talk; an alkali liquid pump is used for power transmission to realize alkali liquid circulation, and the flow rate is simply controlled by a ball valve; a set of hydrogen production system includes an electrolytic cell, a gas-liquid separation device, a control system, an instrument system, etc., and is expensive. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a hydrogen production electrolyzer for electrode and diaphragm testing, which can measure the results under different working conditions, the test results are more comprehensive, the disassembly and assembly are convenient and simple, the test environment can simulate the actual operation of the electrolyzer, and the test data is accurate.

[0004] Technical solution: The present invention includes a frame, on which an electrolytic cell assembly is installed, the electrolytic cell assembly includes supporting frames arranged in pairs, grooves are respectively opened on corresponding sides of the supporting frames, and overlapping rods are connected through the grooves on corresponding sides of the supporting frames on both sides, and a plurality of electrolytic chambers are arranged in the area between the overlapping rods between the supporting frames on both sides, each electrolytic chamber is penetrated by a pole frame support block, and the pole frame support blocks extending out of the two sides of the electrolytic chamber are respectively overlapped on the overlapping rods on the corresponding side, and push plates are respectively provided on the outer sides of the electrolytic chambers located at the edge, and pushing bolts are connected inside the supporting frame, and one end of the pushing bolt extending into the inner side of the supporting frame is connected to a retracting nut, and when the electrolytic chamber is assembled on the supporting frame, the pushing bolt is used to push the push plate, and the electrolytic chamber is squeezed by the push plate to achieve sealing.

[0005] The grooves on both sides of the support frame are located in the same plane, and the grooves on the corresponding sides of the support frames on both sides are also located in the same plane.

[0006] The two ends of the lap rod extend out of the support frame respectively, and nuts are connected to the lap rods extending out of the support frame respectively, and the lap rods are fixed between the support frames on both sides through the nuts at the two ends.

[0007] The support blocks of the electrolytic chamber are located in the same plane, the pole frame support blocks are vertically distributed with the lap rods, and the pole frame support blocks extending out of the two sides of the electrolytic chamber 1 are respectively lapped on the lap rods on the corresponding side.

[0008] The push plate is located between the electrolysis chamber and the supporting frame on the corresponding side.

[0009] Support plates are provided on both sides of the push plate. The support plates and the pole frame support blocks are located in the same plane, and the support plates are overlapped on the overlap rods.

[0010] The electrolytic cell assembly is connected with the alkali liquid pump, the liquid inlet dispersion pipe, and the gas-liquid separation pipe to form a passage.

[0011] The gas-liquid separation tube is connected to the alkaline solution in the peripheral water bath.

[0012] A gas pipeline joint is arranged on the top of the gas-liquid separation tube.

[0013] Beneficial effects: The present invention can measure the results under different working conditions, the test results are more comprehensive, the disassembly and assembly are convenient and simple, the test environment simulates the actual electrolytic cell operation, and the test data is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of an electrolytic cell assembly of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of a single electrolysis chamber of the present invention;

[0016] Figure 3 It is a schematic diagram of the entire electrolytic cell system of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like Figure 3 As shown, the hydrogen production electrolyzer for electrode and diaphragm testing of the present invention includes a frame 10. The frame 10 adopts an integral skid-mounted frame and an integrated skid-mounted structure. It can be placed in a fume hood as a whole, which is safer and more convenient. A water bath and an alkali solution placement space 20 are provided inside the frame 10. An alkali solution pump 30 and an electrolyzer assembly 60 are fixed on the top of the frame 10. The electrolyzer assembly 60 is connected to the alkali solution pump 30, the liquid inlet dispersion pipe 70, and the gas-liquid separation pipe 40. The electrolyzer is connected to the liquid inlet dispersion pipe 70, the alkali solution pump 30, and the gas-liquid separation pipeline 40 with a non-metallic plastic hose to form a passage. The alkali solution pump 30 uses a frequency converter to control the speed of the pump to further control the flow rate. On the one hand, the test results under different flow rates can be measured, and the test content is more comprehensive; on the other hand, the flow rate can be accurately controlled to eliminate the interference of different flow rates, and the test results are more accurate. There are two sets of alkali solution circulation devices on both sides of the positive and negative electrodes, which can measure the electrode diaphragm performance with different pressure differences on both sides of the positive and negative electrodes, and the test content is more comprehensive.

[0019] The gas-liquid separation tube 40 is connected to the alkali solution in the outer water bath with a non-metallic plastic hose. By heating the alkali solution outside the water bath, the results at different temperatures can be measured, and the test content is more comprehensive. A gas pipeline connector 50 is provided on the top of the gas-liquid separation tube 40, and the gas-liquid separation tube 40 and the liquid inlet dispersion pipe 70 are fixed on the frame 10. The electrolytic cell assembly 60, the alkali solution pump 30, the pipeline, etc. are fixed to the skid-mounted frame with bolts, and the built-in alkali solution dispersion hole is replaced by an external pipeline, so that the flow rate of the small chamber is more uniform, the interference of different flow rates is eliminated, and the test results are more accurate.

[0020] like Figure 1 and Figure 2 As shown, the electrolytic cell assembly 60 includes a pair of supporting frames 3, and grooves are respectively provided on the corresponding sides of the supporting frames 3. The grooves on the two sides of each supporting frame 3 are all in the same plane, and the grooves on the corresponding sides of the supporting frames 3 on both sides are also in the same plane. A lap rod is connected through the grooves on the corresponding sides of the supporting frames 3 on both sides, and the two ends of the lap rod extend out of the supporting frames 3 respectively. Nuts are connected to the lap rods extending out of the supporting frames 3, and the lap rods are fixed between the supporting frames 3 on both sides through the nuts at both ends. A plurality of electrolytic chambers 1 are provided in the area between the lap rods between the supporting frames 3 on both sides, and a pole frame support block 13 is provided in each electrolytic chamber 1. The pole frame support block 13 penetrates the electrolytic chamber 1 in the radial direction, and the pole frame support blocks 13 of the plurality of electrolytic chambers 1 are all in the same plane. The pole frame support blocks 13 are vertically distributed with the lap rods, and the pole frame support blocks 13 extending out of the two sides of the electrolytic chamber 1 are respectively lapped on the lap rods on the corresponding side.

[0021] The outer side of the electrolytic chamber 1 located at the edge is respectively provided with a push plate 2, and the push plate 2 adopts an insulating plate. The push plate 2 is located between the electrolytic chamber 1 and the support frame 3 on the corresponding side. Support plates are provided on both sides of each push plate 2. The support plate and the pole frame support block 13 are located in the same plane, and the support plate is overlapped on the overlap rod. A pushing bolt 5 is connected to the support frame 3, and the pushing bolt 5 is arranged between the overlap rods on both sides. The pushing bolt 5 penetrates the support frame 3 axially, and a retracting nut 4 is connected to one end extending into the inner side of the support frame 3, and the pushing bolt 5 is installed on the support frame 3 through the retracting nut 4. A sealing gasket is provided between each electrolytic chamber 1, and the sealing gasket is sealed with EPDM rubber. The rubber seal is elastically deformed, and the extrusion force requirement is low, which is more suitable for testing equipment. When the electrolytic chamber 1 is assembled on the support frame 3, the pushing bolt 5 is used to push the push plate 2, and the electrolytic chamber 1 is squeezed by the push plate 2 to achieve effective sealing, which is more conducive to assembly and suitable for frequent disassembly replacement testing.

[0022] A single electrolytic cell 1 includes a pole frame 11, which is made of non-metallic materials to reduce the weight, assembly difficulty and cost of the test electrolytic cell. One end face of the pole frame 11 is a diaphragm placement surface 17, and electrode fixing blocks 12 are provided on both sides of the pole frame 11. The electrode fixing blocks 12 are made of metal materials and are used to support and fix electrodes 19. Electrodes 19 are provided between the electrode fixing blocks 12 on both sides, and multiple electrode fixing bolts 18 are installed on the surface of the electrode 19. The electrode 19 is fixed by the electrode fixing bolts 18. A gas-liquid outlet pipe joint 16 and a terminal block 14 are provided on the top of the pole frame 11. The gas-liquid outlet pipe joint 16 is connected to the gas-liquid separation pipe 40 for removing the gas-liquid mixture, and the terminal block 14 is used for powering the electrolytic cell; a liquid inlet pipe joint 15 is provided on one side of the pole frame 11, and the liquid inlet pipe joint 15 is connected to the liquid inlet dispersion pipe 70 for passing alkali solution to the electrolytic cell.

Claims

1. A hydrogen production electrolyzer for electrode and diaphragm testing, characterized in that: It comprises a frame, on which an electrolytic cell assembly is installed, the electrolytic cell assembly comprises supporting frames arranged in pairs, grooves are respectively provided on corresponding sides of the supporting frames, overlapping rods are connected through the grooves on corresponding sides of the supporting frames on both sides, a plurality of electrolytic chambers are arranged in the area between the overlapping rods between the supporting frames on both sides, a pole frame support block is penetrated in each electrolytic chamber, the pole frame support blocks extending out of the two sides of the electrolytic chamber are overlapped on the overlapping rods on the corresponding side, push plates are respectively provided on the outer sides of the electrolytic chambers located at the edges, pushing bolts are connected in the supporting frames, and one end of the pushing bolts extending into the inner side of the supporting frames is connected with a retracting nut, and when the electrolytic chamber is assembled on the supporting frame, the pushing bolts are used to push the push plates, and the electrolytic chambers are squeezed by the push plates to achieve sealing.

2. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 1, characterized in that: The two ends of the lap rod extend out of the support frame respectively, and nuts are connected to the lap rods extending out of the support frame respectively.

3. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 2, characterized in that: The support blocks of the electrolysis chamber are located in the same plane, and the pole frame support blocks are vertically distributed with the lap rods.

4. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 1, characterized in that: The push plate is located between the electrolysis chamber and the supporting frame on the corresponding side.

5. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 4, characterized in that: Support plates are provided on both sides of the push plate. The support plates and the pole frame support blocks are located in the same plane, and the support plates are overlapped on the overlap rods.

6. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 1, characterized in that: The electrolytic cell assembly is connected with an alkali solution pump, a liquid inlet dispersion pipe, and a gas-liquid separation pipe.

7. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 6, characterized in that: The gas-liquid separation tube is connected to the alkaline solution in the peripheral water bath.

8. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 7, characterized in that: A gas pipeline joint is arranged on the top of the gas-liquid separation tube.

9. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 6, characterized in that: The electrolysis chamber comprises an electrode frame, one end surface of the electrode frame is a diaphragm placement surface, and electrodes are arranged in the electrode frame.

10. The hydrogen production electrolyzer for electrode and diaphragm testing according to claim 9, characterized in that: A gas-liquid outlet pipe joint and a terminal block are provided on the top of the pole frame, and the gas-liquid outlet pipe joint is connected to the gas-liquid separation pipe; a liquid inlet pipe joint is provided on one side of the pole frame, and the liquid inlet pipe joint is connected to the liquid inlet dispersion pipe.

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