Novel PEM electrolytic bath fastening structure

Abstract

The utility model provides a novel PEM electrolytic bath fastening structure which comprises an anode end plate, a fastening bolt group arranged on the left side of the anode end plate, an anode runner plate arranged on the right side of the anode end plate, a test element arranged on the right side of the anode runner plate, and a cathode runner plate arranged on the right side of the test element. Compared with the prior art, the nut has the advantages that due to the fact that the long kidney-shaped holes are formed, when all the fastening bolts fall into the steps of the long kidney-shaped holes in the installation process, the fastening bolt set cannot slide and rotate in the installation process, and specified torque output fastening can be directly completed through a torque wrench of the nut; when the fastening screw set bolt is loosened, the belleville spring can provide enough pre-tightening force, it is guaranteed that the distance between the anode end plate and the cathode end plate is basically consistent, and when the fastening screw set bolt is loosened, the belleville spring can release part of potential energy and then keep the pressure between nut connections, so that the sealing requirement is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of PEM electrolytic cell fastening, and particularly relates to a novel PEM electrolytic cell fastening structure. Background Art

[0002] Energy crisis and environmental pollution are becoming increasingly serious. Developing renewable energy and taking the path of sustainable development have become the research focus of scholars from all over the world. Hydrogen energy is recognized as the most promising energy carrier in the future due to its clean and efficient characteristics. Among the various hydrogen production technologies currently available, using electricity generated by renewable energy as power to electrolyze water is the most mature and promising technology and is regarded as the best way to the hydrogen economy. Water electrolysis is a process in which water is decomposed into hydrogen and oxygen by power provided by electricity. Different from the traditional alkaline water electrolysis principle, PEM (polymer electrolyte membrane) water electrolysis technology uses pure water as electrolyte, and the PEM membrane plays a dual role as electrolyte and diaphragm. When the water electrolyzer is working, the hydrated protons on the membrane are transferred between the anode and the cathode through the interface area, and an acidic water electrolysis reaction occurs. PEM water electrolysis to produce hydrogen has the advantages of high hydrogen production efficiency and environmental protection, and is considered to be the main method of hydrogen production in the future. However, when the electrolyzer in the prior art is not installed, the bolt group has a large amount of activity, which makes assembly inconvenient and inefficient. The torque control with a torque wrench is cumbersome and complicated. At the same time, when the bolt group is tightened, the PEM electrolyzer cannot be fixed, and the torque cannot be output and the torque wrench cannot be controlled. Therefore, a new type of PEM electrolyzer fastening structure is urgently needed to solve the above problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a novel PEM electrolyzer fastening structure to solve the problems raised in the above-mentioned background technology.

[0004] The utility model is realized by the following technical scheme: a novel PEM electrolyzer fastening structure, comprising an anode end plate, a fastening bolt group is arranged on the left side of the anode end plate, an anode flow channel plate is arranged on the right side of the anode end plate, a test element is arranged on the right side of the anode flow channel plate, a cathode flow channel plate is arranged on the right side of the test element, a cathode end plate is arranged on the right side of the cathode flow channel plate, and a plurality of long waist holes are opened around the front side of the cathode end plate;

[0005] A plurality of disc springs are arranged around the back of the cathode end plate, and a gasket is arranged correspondingly behind each of the disc springs;

[0006] A nut is correspondingly arranged behind each of the plurality of gaskets.

[0007] As a preferred embodiment, the fastening bolt group is composed of a plurality of hexagonal bolts, and a thread is disposed at the rear end of the fastening bolt group.

[0008] As a preferred embodiment, the fastening bolt group passes through the anode end plate, the cathode end plate, the disc spring and the gasket and is threadedly connected to multiple nuts. The anode flow channel plate, the test element and the cathode flow channel plate are fastened between the anode end plate and the cathode end plate, and the disc spring can provide sufficient preload force.

[0009] As a preferred embodiment, the test element is a test membrane electrode test element containing a gasket, the outer side of the fastening bolt group is covered with an insulating protective sleeve, and the front end of the fastening bolt group is located in a plurality of long waist holes during installation.

[0010] As a preferred embodiment, a plurality of anode inlets are opened through the right side of the anode end plate, and a plurality of anode outlets are opened through the left side of the anode end plate.

[0011] As a preferred embodiment, two cathode gas path outlets are provided through the back of the cathode end plate, and the long waist hole is designed as a sunken step.

[0012] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: by setting the long waist hole, during installation, when all the fastening bolts fall into the steps of the long waist hole, the fastening bolt group will not slide and rotate during installation, and the specified torque output fastening can be completed directly through the torque wrench of the nut. By setting the disc spring, sufficient pre-tightening force can be provided to ensure that the distance between the anode end plate and the cathode end plate is basically consistent, and when the fastening bolt group bolt becomes loose, the disc spring can release part of the potential energy and then maintain the pressure between the nut connection to meet the sealing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is a schematic diagram of the exploded structure of a novel PEM electrolyzer fastening structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure of a novel PEM electrolyzer fastening structure of the utility model.

[0016] Figure 3 This is a schematic diagram of a rear view of a novel PEM electrolyzer fastening structure of the utility model.

[0017] Figure 4It is a schematic diagram of a top view of a novel PEM electrolyzer fastening structure of the utility model.

[0018] Figure 5 The utility model is a schematic diagram of the structure of the anode end plate in a novel PEM electrolyzer fastening structure.

[0019] In the figure, 1-fastening bolt group, 2-anode end plate, 3-anode flow channel plate, 4-test element, 5-cathode flow channel plate, 6-cathode end plate, 7-nut, 8-anode inlet, 9-long waist hole, 10-cathode gas path outlet, 11-insulating protective cover, 13-disc spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5 The utility model provides a technical solution: a novel PEM electrolyzer fastening structure, comprising an anode end plate 2, a fastening bolt group 1 is arranged on the left side of the anode end plate 2, an anode flow channel plate 3 is arranged on the right side of the anode end plate 2, a test element 4 is arranged on the right side of the anode flow channel plate 3, a cathode flow channel plate 5 is arranged on the right side of the test element 4, a cathode end plate 6 is arranged on the right side of the cathode flow channel plate 5, and a plurality of long waist holes 9 are opened around the front of the cathode end plate 6;

[0022] A plurality of disc springs 13 are arranged around the back of the cathode end plate 6, and a gasket is arranged behind each of the disc springs 13;

[0023] A nut 7 is correspondingly arranged behind each of the plurality of washers.

[0024] The fastening bolt group 1 is composed of a plurality of hexagonal bolts, and a thread is arranged at the rear end of the fastening bolt group 1 .

[0025] The fastening bolt group 1 passes through the anode end plate 2, the cathode end plate 6, the disc spring 13 and the gasket and is threadedly connected with multiple nuts 7. The anode flow channel plate 3, the test element 4 and the cathode flow channel plate 5 are fastened between the anode end plate 2 and the cathode end plate 6. The disc spring 13 can provide sufficient pre-tightening force.

[0026] The test element 4 is a test membrane electrode test element containing a gasket. An insulating protective sleeve 11 is sleeved on the outside of the fastening bolt group 1. When the fastening bolt group 1 is installed, its front end is located in a plurality of long waist holes 9.

[0027] A plurality of anode inlets 8 are provided through the right side of the anode end plate 2 , and a plurality of anode outlets are provided through the left side of the anode end plate 2 .

[0028] Two cathode gas path outlets 10 are provided through the back of the cathode end plate 6, and the long waist hole 9 is designed as a sunken step.

[0029] As the first embodiment of the utility model: In order to solve the problems in the prior art that when the electrolytic cell is not installed, the bolt group has a large amount of activity, the assembly is inconvenient and inefficient, the torque control with the torque wrench is cumbersome and complicated, and the PEM electrolytic cell cannot be fixed when the bolt group is tightened, and the torque cannot be output and the torque wrench cannot be controlled, when tightening the bolt group, the tightening bolt group 1 is passed through the anode end plate 2, the cathode end plate 6, the disc spring 13 and the gasket, and the front end of the tightening bolt group 1 is located in the multiple long waist holes 9, and then the nut 7 is connected to the rear end of the tightening bolt group 1 using an external torque wrench, and the anode flow channel plate 3, the test element 4 and the cathode flow channel plate 5 are tightened between the anode end plate 2 and the cathode end plate 6. Through the above steps, the final effect is that the tightening bolt group 1 will not slide and rotate during installation, so that the assembly process is more convenient, and the specified torque output tightening can be completed directly through the torque wrench of the nut 7.

[0030] As the second embodiment of the utility model: since a gasket is respectively provided at the front end of the multiple nuts 7, and a disc spring 13 is respectively provided at the front end of the multiple gaskets, after the fastening bolt group 1 is connected with the multiple nuts 7, the disc spring 13 can provide enough pre-tightening force to ensure that the distance between the anode end plate 2 and the cathode end plate 6 is basically consistent. The disc spring 13 is a special spring that is conical in the axial direction and bears the load. After being deformed under the load, a certain potential energy is stored. When the fastening bolt group 1 is loose, the disc spring 13 releases part of the potential energy to maintain the pressure between the nuts 7 to meet the sealing requirements. When using, pay attention to the use of the disc spring 13 as follows Figure 4 The disc spring 13 is shown as being used with its front and back sides stacked together. The stress distribution of the disc spring 13 decreases evenly from the inside to the outside to achieve the effect of low stroke and high compensation force.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel PEM electrolyzer fastening structure, comprising an anode end plate (2), a fastening bolt group (1) is arranged on the left side of the anode end plate (2), an anode flow channel plate (3) is arranged on the right side of the anode flow channel plate (2), a test element (4) is arranged on the right side of the anode flow channel plate (3), a cathode flow channel plate (5) is arranged on the right side of the test element (4), and a cathode end plate (6) is arranged on the right side of the cathode flow channel plate (5), characterized in that: The cathode end plate (6) is provided with a plurality of long waist holes (9) around the front side; A plurality of disc springs (13) are arranged around the back of the cathode end plate (6), and a gasket is correspondingly arranged behind each of the disc springs (13); A nut (7) is correspondingly arranged behind each of the plurality of gaskets.

2. A novel PEM electrolyzer fastening structure as claimed in claim 1, characterized in that: The fastening bolt group (1) is composed of a plurality of hexagonal bolts, and a thread is provided at the rear end of the fastening bolt group (1).

3. A novel PEM electrolyzer fastening structure as claimed in claim 2, characterized in that: The fastening bolt group (1) passes through the anode end plate (2), the cathode end plate (6), the disc spring (13) and the gasket and is threadedly connected to a plurality of nuts (7); the anode flow channel plate (3), the test element (4) and the cathode flow channel plate (5) are fastened between the anode end plate (2) and the cathode end plate (6).

4. A novel PEM electrolyzer fastening structure as claimed in claim 3, characterized in that: The test element (4) is a test membrane electrode test element containing a gasket, the outer side of the fastening bolt group (1) is covered with an insulating protective sleeve (11), and the front end of the fastening bolt group (1) is located in a plurality of long waist holes (9) during installation.

5. A novel PEM electrolyzer fastening structure as claimed in claim 1, characterized in that: The right side of the anode end plate (2) is provided with a plurality of anode inlets (8), and the left side of the anode end plate (2) is provided with a plurality of anode outlets.

6. A novel PEM electrolyzer fastening structure as claimed in claim 1, characterized in that: The back side of the cathode end plate (6) is provided with two cathode gas path outlets (10), and the long waist hole (9) is designed as a sunken step.

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