PEM electrolytic cell positioning device and assembling method

Abstract

The invention provides a PEM electrolytic cell positioning device which comprises a backer, a leaning tool, a plurality of end plate clamping pieces and a plurality of clamping plate pieces, the leaning tool is installed at the top of the backer, the end plate clamping pieces and the clamping plate pieces are installed on the leaning tool, the leaning tool is provided with an installation section extending from the middle to the top, and the end plate clamping pieces and the clamping plate pieces are installed on the leaning tool. The plurality of clamping plates are mounted on the mounting section, an end plate clamping piece is mounted at the top of the mounting section, and an end plate clamping piece is mounted at the leaning tool position at the bottom of the mounting section. The invention further provides an assembling method of the PEM electrolytic cell adopting a plurality of the PEM electrolytic cell positioning devices. The PEM electrolytic bath positioning device is more suitable for the assembly requirement of a plurality of layers of PEM electrolytic baths, and the assembly efficiency and precision are better.

Description

Technical Field

[0001] The present invention relates to the technical field related to hydrogen production by electrolysis of water, and more precisely to a PEM electrolyzer positioning device and an assembly method. Background Art

[0002] Hydrogen production by water electrolysis refers to the process of passing direct current into an electrolyzer filled with electrolyte, where water molecules undergo an electrochemical reaction on the electrodes of the electrolyzer, decomposing into oxygen and hydrogen. The PEM electrolyzer uses a proton membrane as an electrolyte and pure water as a reactant to produce hydrogen by electrolysis. Water molecules on the anode side are decomposed into oxygen (O2), protons (H + ) and electrons (e-), the generated oxygen is eliminated from the anode surface, the remaining protons pass through the proton membrane to the cathode side, and the electrons pass through the external circuit to the cathode side, where the protons and electrons recombine to generate hydrogen. The hydrogen produced by the PEM electrolyzer is of high purity, with an output pressure of several MPa and a wide pressure control range, which can effectively adapt to the rapidly changing renewable energy power input conditions. Therefore, the PEM electrolyzer is a more commonly used water electrolyzer.

[0003] The PEM electrolyzer stack is mainly composed of end plates, insulating plates, current collecting plates, bipolar plates, pole frames, membrane electrodes, etc. When the number of assembly layers is small, simple positioning screws can be used to complete the assembly; however, when the demand for hydrogen production is large, more assembly layers are required. During the assembly process, as the number of layers increases, the positioning columns also need to increase accordingly. At present, the stacking of layers in the assembly process still needs to rely on the naked eye to align the positioning, which has poor accuracy and requires multiple adjustments to align the reserved channels. The assembly efficiency is low and the sealing effect is poor; at the same time, as the number of layers increases, the compression of each small chamber becomes larger and larger, and it is easy to shift, causing the sealing ring to fail and the overall tilt, which makes it difficult to assemble and fix the upper insulating plate and the end plate, and ultimately the assembly fails. In addition, due to the fact that the specifications and sizes of electrolyzers of different specifications are not consistent, the assembly table with a single specification support column is difficult to adapt to electrolyzers of different specifications, and the applicability is poor.

[0004] In summary, the art needs a positioning device that can more efficiently and accurately complete the assembly of a PEM electrolyzer, and the positioning device can be adapted to electrolyzers of different specifications. In addition, the art also needs an assembly method that can efficiently and accurately complete the assembly of a PEM electrolyzer. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a PEM electrolyzer positioning device, which is assembled with the assistance of multiple positioning components and reinforcing components to efficiently and accurately fix and stack multiple layers of chambers, thereby avoiding the problems of poor positioning effect and easy misalignment.

[0006] Another object of the present invention is to provide a method for assembling a PEM electrolyzer, which is completed by using the PEM electrolyzer positioning device, and the assembly is quick and convenient.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a PEM electrolyzer positioning device, including a backrest, a support, a plurality of end plate clamps and a plurality of clamping plates, the backrest is installed at the top of the backrest, the end plate clamps and the clamping plates are both installed on the backrest, the backrest has a mounting section extending from the middle to the top, a plurality of the clamping plates are installed on the mounting section, an end plate clamp is installed at the top of the mounting section, and an end plate clamp is installed at the backrest position at the bottom of the mounting section.

[0008] Preferably, the backrest has a plurality of backrest positioning holes, and bolts are passed through the backrest positioning holes, so that the backrest is fixed on the working plane by the bolts.

[0009] Preferably, the mounting section has a plurality of support holes arranged in an array.

[0010] Preferably, the support hole is a circular hole penetrating the mounting section.

[0011] Preferably, one end of the locking plate connected to the mounting section has a locking plate positioning hole, a bolt is passed through the locking plate positioning hole, and the bolt is threadedly connected to the support hole.

[0012] Preferably, the positioning hole of the locking plate is a long through hole.

[0013] Preferably, one end of the end plate clamp connected to the support has a clamping groove, the end of the end plate clamp has an end plate clamp positioning hole connected to the clamping groove, the support is clamped in the clamping groove, a bolt is passed through the end plate clamp positioning hole, and the bolt abuts the support.

[0014] Preferably, the end plate clamp positioning hole is a long through hole.

[0015] Preferably, the top edge of the support is processed to form a support chamfer, and the top edge of the end plate clamp is processed to form an end plate chamfer.

[0016] The present invention provides a method for assembling a PEM electrolyzer, using a plurality of PEM electrolyzer positioning devices, comprising the steps of:

[0017] (A) Adjust the position of the backrest according to the size of the lower end plate and fix the backrest with bolts;

[0018] (B) Install the support on the backrest, and install the lower end plate clamp on the support, and then embed the lower end plate on the end plate clamp;

[0019] (C) assembling the positioning plates according to the size of the membrane electrode to be installed, installing the positioning plates on the installation section, and increasing the number of positioning plates accordingly according to the number of stacking layers, thereby completing the assembly of the PEM electrolyzer positioning device;

[0020] (D) Install the lower insulating plate on the lower end plate. During the installation process, the lower insulating plate is positioned by the positioning plate. Then, the current collecting plate, bipolar plate, pole frame, membrane electrode, and upper current collecting plate are installed in sequence. When the number of battery stack layers reaches the installation requirements, the upper insulating plate is positioned and installed by the positioning plate;

[0021] (E) Install the end plate clamps on the top of the installation section respectively, and adjust the installation position of the end plate clamps according to the number of stacking layers to complete the assembly.

[0022] Compared with the prior art, the advantages of a PEM electrolyzer positioning device and an assembly method disclosed in the present invention are: the PEM electrolyzer positioning device is more adaptable to the assembly requirements of multi-layer PEM electrolyzers, and the assembly efficiency and precision are better; the PEM electrolyzer positioning device can be adjusted to adapt to the assembly of PEM electrolyzers of different specifications and sizes, and has stronger applicability; the PEM electrolyzer positioning device is safer to use; and the PEM electrolyzer assembly method is accurate and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] As attached Figure 1 Shown is a schematic structural diagram of a PEM electrolyzer positioning device of the present application.

[0025] As attached Figure 2 Shown is a partial structural schematic diagram of the top of a support for a PEM electrolyzer positioning device of the present application.

[0026] As attached Figure 3 Shown is a schematic structural diagram of an end plate clamp of a PEM electrolyzer positioning device of the present application. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1 As shown, the present application provides a PEM electrolyzer positioning device including a backrest 1, a support 2, a plurality of end plate clamps 3 and a plurality of clamping plates 4, the support 2 is mounted on the top of the backrest 1, the end plate clamps 3 and the clamping plates 4 are both mounted on the support 2, the support 2 has a mounting section 20 extending from the middle to the top, a plurality of clamping plates 4 are mounted on the mounting section 20, an end plate clamp 3 is mounted on the top of the mounting section 20, and an end plate clamp 3 is mounted on the position of the support 2 at the bottom of the mounting section 20. The number and position of the clamping plates 4 mounted on the mounting section 20 can be adjusted to adapt to PEM electrolyzers of different specifications. When assembling the PEM electrolyzer, a plurality of the PEM electrolyzer positioning devices are fixedly installed by the backrest 1. Through the end plate clamp 3 and the clamping plate 4, an auxiliary function can be played when assembling the PEM electrolyzer to accurately fix and stack multiple layers of chambers, thereby ensuring the compression amount, stacking accuracy and sealing effect of the chambers. In addition, the PEM electrolyzer positioning device can be adjusted and adapted according to PEM electrolyzers of different specifications, and has a wider range of applications.

[0029] Specifically, the backrest 1 has a plurality of backrest positioning holes 10, through which bolts are inserted, and the backrest 1 is fixed on the working plane by bolts. When in use, the positions of the plurality of backrests 1 are adjusted according to the size of the lower end plate of the PEM electrolyzer, and then the backrest 1 is fixed and installed by bolts.

[0030] The thickness of the mounting section 20 is smaller than the thickness of other parts of the support 2 , and the mounting section 20 has a plurality of support holes 200 arranged in an array, and the support holes 200 are circular holes penetrating the mounting section 20 .

[0031] One end of the clamping plate 4 connected to the mounting section 20 has a clamping plate positioning hole 40, through which a bolt is passed, and the bolt is threadedly connected to the support hole 200. Preferably, the clamping plate positioning hole 40 is a long through hole, which is convenient for fine-tuning the position of the clamping plate 4.

[0032] See also Figure 3 The end of the end plate clamp 3 connected to the support 2 has a clamping groove 300, and the end of the end plate clamp 3 has an end plate clamp positioning hole 30 connected to the clamping groove 300, the support 2 is clamped in the clamping groove 300, and a bolt is passed through the end plate clamp positioning hole 30, and the bolt abuts against the support 2 to achieve the positioning installation of the end plate clamp 3. Preferably, the end plate clamp positioning hole 30 is a long through hole, which is convenient for fine-tuning the position of the end plate clamp 3.

[0033] See also Figure 2 and Figure 3The top edge of the support 2 is processed to form a support chamfer 21, and the top edge of the end plate clamp 3 is processed to form an end plate chamfer 31, so as to reduce the risk of scratching components such as the low membrane electrode, and at the same time improve the operating safety of the staff during the assembly process.

[0034] The present application also provides a method for assembling a PEM electrolyzer, using a plurality of the PEM electrolyzer positioning devices, comprising the steps of:

[0035] (A) Adjust the position of the backrest according to the size of the lower end plate and fix the backrest with bolts;

[0036] (B) Install the support on the backrest, and install the lower end plate clamp on the support, and then embed the lower end plate on the end plate clamp;

[0037] (C) assembling the positioning plates according to the size of the membrane electrode to be installed, installing the positioning plates on the installation section, and increasing the number of positioning plates accordingly according to the number of stacking layers, thereby completing the assembly of the PEM electrolyzer positioning device;

[0038] (D) Install the lower insulating plate on the lower end plate. During the installation process, the lower insulating plate is positioned by the positioning plate. Then, the current collecting plate, bipolar plate, pole frame, membrane electrode, and upper current collecting plate are installed in sequence. When the number of battery stack layers reaches the installation requirements, the upper insulating plate is positioned and installed by the positioning plate;

[0039] (E) Install the end plate clamps on the top of the installation section respectively, and adjust the installation position of the end plate clamps according to the number of stacking layers to complete the assembly.

[0040] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PEM electrolyzer positioning device, characterized in that: It includes a backrest, a backrest, a plurality of end plate clamps and a plurality of retaining plates, wherein the backrest is installed at the top of the backrest, the end plate clamps and the retaining plates are both installed on the backrest, the backrest has a mounting section extending from the middle to the top, a plurality of retaining plates are installed on the mounting section, an end plate clamp is installed at the top of the mounting section, and an end plate clamp is installed at the backrest position at the bottom of the mounting section.

2. The PEM electrolyzer positioning device according to claim 1, characterized in that: The backrest is provided with a plurality of backrest positioning holes, bolts are passed through the backrest positioning holes, and the backrest is fixed on the working plane by the bolts.

3. The PEM electrolyzer positioning device according to claim 1, characterized in that: The mounting section is provided with a plurality of support holes arranged in an array.

4. The PEM electrolyzer positioning device according to claim 3, characterized in that: The support hole is a circular hole penetrating the mounting section.

5. The PEM electrolyzer positioning device according to claim 3, characterized in that: One end of the locking plate connected to the mounting section is provided with a locking plate positioning hole, a bolt is passed through the locking plate positioning hole, and the bolt is threadedly connected with the support hole.

6. The PEM electrolyzer positioning device according to claim 5, characterized in that: The positioning hole of the locking plate is a long through hole.

7. The PEM electrolyzer positioning device according to claim 1, characterized in that: One end of the end plate clamp connected to the support has a clamping groove, the end of the end plate clamp has an end plate clamp positioning hole connected to the clamping groove, the support is clamped in the clamping groove, a bolt is passed through the end plate clamp positioning hole, and the bolt abuts the support.

8. The PEM electrolyzer positioning device according to claim 7, characterized in that: The end plate clamp positioning hole is a long through hole.

9. The PEM electrolyzer positioning device according to claim 1, characterized in that: The top edge of the support is processed to form a support chamfer, and the top edge of the end plate clamp is processed to form an end plate chamfer.

10. A method for assembling a PEM electrolyzer, using a plurality of PEM electrolyzer positioning devices according to any one of claims 1 to 9, comprising the steps of: (A) Adjust the position of the backrest according to the size of the lower end plate and fix the backrest with bolts; (B) Install the support on the backrest, and install the lower end plate clamp on the support, and then embed the lower end plate on the end plate clamp; (C) assembling the positioning plates according to the size of the membrane electrode to be installed, installing the positioning plates on the installation section, and increasing the number of positioning plates accordingly according to the number of stacking layers, thereby completing the assembly of the PEM electrolyzer positioning device; (D) Install the lower insulating plate on the lower end plate. During the installation process, the lower insulating plate is positioned by the positioning plate. Then, the current collecting plate, bipolar plate, pole frame, membrane electrode, and upper current collecting plate are installed in sequence. When the number of battery stack layers reaches the installation requirements, the upper insulating plate is positioned and installed by the positioning plate; (E) Install the end plate clamps on the top of the installation section respectively, and adjust the installation position of the end plate clamps according to the number of stacking layers to complete the assembly.

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