Insulation sealing structure of hydrogen production device

Abstract

The utility model discloses an insulation sealing structure of a hydrogen production device, which belongs to the technical field of sealing structures of hydrogen production electrolytic baths and comprises an upper pole frame and a lower pole frame, a pole plate and an insulation plate are arranged between the upper pole frame and the lower pole frame, and a diaphragm is arranged on one side of the insulation plate. Double-ring sealing structures are arranged between the upper pole frame and the top of the insulating plate and between the lower pole frame and the bottom of the insulating plate, hydrogen side flow channels are arranged in the inner side areas, corresponding to the double-ring sealing structures, of the upper pole frame, the lower pole frame and the pole plate, and oxygen side flow channels are arranged in the outer side areas, corresponding to the double-ring sealing structures, of the upper pole frame, the lower pole frame and the pole plate; according to the utility model, the hydrogen side and the oxygen side can be effectively isolated and sealed, and meanwhile, larger electrolyte input pressure can be borne, so that the flowability of electrolyte between adjacent small electrolysis chambers is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hydrogen production electrolytic cell sealing structure, concretely relates to an insulating sealing structure of hydrogen production device. BACKGROUND

[0002] The electrolytic cell is one of important components suitable for electrolytic hydrogen production, and oxygen and hydrogen are generated at the electrode during the electrolytic hydrogen production process, in order to ensure the safety of the hydrogen production process, the electrolytic cell needs to be effectively sealed, thereby avoiding the mutual leakage and mixing of hydrogen and oxygen.

[0003] In the prior art, a sealing ring is usually arranged between the pole plate and the pole frame of the electrolytic cell for sealing to isolate hydrogen and oxygen. However, the above structure has the following problems:

[0004] 1. The sealing performance of the single sealing ring is insufficient, and the aging deformation of the sealing ring will affect the sealing between the pole plate and the pole frame, resulting in the leakage and mixing of hydrogen and oxygen, which is dangerous;

[0005] 2. The single sealing ring has weak pressure bearing capacity, and once the input pressure of the alkaline electrolyte is increased, the single sealing ring may fail; and controlling the input pressure of the alkaline electrolyte in a small range will affect the flowability of the alkaline electrolyte between the electrolytic cells in the electrolytic cell, thereby affecting the efficiency of the electrolytic hydrogen production.

[0006] Therefore, in view of the above problems in the prior art, the utility model discloses an insulating sealing structure of hydrogen production device. UTILITY MODEL CONTENTS

[0007] The utility model discloses an insulating sealing structure of hydrogen production device, can carry out effective isolation sealing to hydrogen side and oxygen side, can bear greater electrolyte input pressure simultaneously, guarantees the flowability of electrolyte between adjacent electrolytic cells.

[0008] The utility model realizes the following technical scheme:

[0009] An insulating sealing structure of hydrogen production device, including upper pole frame and lower pole frame, be provided with the pole plate and the insulating plate between the upper pole frame and the lower pole frame, one side of the insulating plate is provided with the diaphragm, the top between the upper pole frame and the insulating plate, the bottom between the lower pole frame and the insulating plate all are provided with double ring sealing structure, the inner side area of corresponding double ring sealing structure on the upper pole frame, lower pole frame, pole plate is provided with hydrogen side flow channel, the outer side area of corresponding double ring sealing structure on the upper pole frame, lower pole frame, pole plate is provided with oxygen side flow channel.

[0010] The upper pole frame, the double-ring sealing structure, the insulating plate, the diaphragm, the pole plate, the double-ring sealing structure and the lower pole frame are closely stacked from top to bottom to form an electrolysis chamber, the alkaline electrolyte contacts the pole plate through the hydrogen side flow channel and the oxygen side flow channel, and then hydrogen is generated at the hydrogen side flow channel and oxygen is generated at the oxygen side flow channel. The double-ring sealing structure is arranged, and then the hydrogen side flow channel and the oxygen side flow channel are isolated at the inner side and the outer side of the double-ring sealing structure, so that the hydrogen side flow channel and the oxygen side flow channel are completely isolated, and the mixing of hydrogen and oxygen is effectively avoided. The insulating plate is arranged, so that the insulating property of the pole plate in the electrolysis chamber is ensured, and meanwhile the entire electrolysis chamber can withstand higher pressure, and the safety of the working process of the electrolysis chamber is improved.

[0011] In order to better realize the utility model, further, the double-ring sealing structure includes a first sealing ring and a second sealing ring arranged outside the first sealing ring, the first sealing ring and the second sealing ring are arranged between the top of the upper pole frame and the insulating plate and between the bottom of the lower pole frame and the insulating plate, the hydrogen side flow channel is located in the inner side region of the first sealing ring, and the oxygen side flow channel is located in the outer side region of the second sealing ring.

[0012] In order to better realize the utility model, further, the top surface and the bottom surface of the insulating plate are provided with a first ring groove corresponding to the first sealing ring and a second ring groove corresponding to the second sealing ring, and the bottom of the upper pole frame is provided with an upper pressing ring corresponding to the first ring groove and the second ring groove, and the top of the lower pole frame is provided with a lower pressing ring corresponding to the first ring groove and the second ring groove.

[0013] In order to better realize the utility model, further, the top surface and the bottom surface of the insulating plate are provided with a first ring groove corresponding to the first sealing ring and a second ring groove corresponding to the second sealing ring, and the bottom of the upper pole frame is provided with an upper pressing ring corresponding to the first ring groove and the second ring groove, and the top of the lower pole frame is provided with a lower pressing ring corresponding to the first ring groove and the second ring groove.

[0014] In order to better realize the utility model, further, the first ring groove and the second ring groove are circular grooves or waist-shaped grooves.

[0015] In order to better realize the utility model, further, the distance between the hydrogen side flow channel and the inner side of the double-ring sealing structure is greater than or equal to 3mm, and the distance between the oxygen side flow channel and the outer side of the double-ring sealing structure is greater than or equal to 3mm.

[0016] In order to better realize the utility model, further, the bottom edge of the upper pole frame is provided with a positioning boss, and the top edge of the lower pole frame is provided with a positioning groove corresponding to the positioning boss.

[0017] In order to better realize the utility model, further, the upper pole frame and the lower pole frame are prepared from non-metallic materials.

[0018] In order to better realize the utility model, further, the top surface or bottom surface of the insulating plate is provided with a diaphragm mounting area, and the diaphragm is press-fitted in the diaphragm mounting area.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0020] The utility model discloses a double-ring sealing structure is arranged between the top of the upper frame and the insulating plate and between the bottom of the lower frame and the insulating plate, forms more safe and reliable double-ring sealing structure, simultaneously arranges the hydrogen side flow channel in the inboard area of double-ring sealing structure, arranges the oxygen side flow channel in the outboard area of double-ring sealing structure, realizes effective sealing isolation of hydrogen side and oxygen side, avoids the leakage and mixing between oxygen and hydrogen, simultaneously, the pressure-bearing capacity of sealing structure is improved through setting double-ring sealing structure, can input electrolyte with greater pressure, and then the flowability of electrolyte between adjacent electrolytic cells is improved, finally guarantees the efficiency of electrolytic hydrogen production. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional structure schematic view of the insulating sealing structure of hydrogen production device;

[0022] Figure 2 It is the schematic view of double-ring sealing structure;

[0023] Figure 3 It is the structure schematic view of upper frame;

[0024] Figure 4 It is the structure schematic view of lower frame;

[0025] Figure 5 It is the installation schematic view of ring-shaped labyrinth gear slot and labyrinth press gear.

[0026] Wherein: 1-upper frame;2-lower frame;3-pole plate;4-insulating plate;5-diaphragm;6-double-ring sealing structure;7-hydrogen side flow channel;8-oxygen side flow channel;11-upper pressure ring;21-lower pressure ring;41-first ring groove;42-second ring groove;61-first sealing ring;62-second sealing ring;100-ring-shaped labyrinth gear slot;200-labyrinth press gear;101-positioning boss;201-positioning groove. DETAILED DESCRIPTION Embodiment 1:

[0027] The insulating sealing structure of hydrogen production device of this embodiment is as follows: Figure 1 And Figure 2As shown, including the upper pole frame 1 and the lower pole frame 2, the upper pole frame 1 and the lower pole frame 2 are provided with a pole plate 3 and an insulating plate 4, one side of the insulating plate 4 is provided with a diaphragm 5; the top of the upper pole frame 1 and the insulating plate 4, the bottom of the lower pole frame 2 and the insulating plate 4 are provided with double-ring sealing structure 6, the inner side area of the upper pole frame 1, the lower pole frame 2 and the pole plate 3 corresponding to the double-ring sealing structure 6 is provided with hydrogen side flow channel 7, the outer side area of the upper pole frame 1, the lower pole frame 2 and the pole plate 3 corresponding to the double-ring sealing structure 6 is provided with oxygen side flow channel 8.

[0028] The upper pole frame 1, the double-ring sealing structure 6, the insulating plate 4, the diaphragm 5, the pole plate 3, the double-ring sealing structure 6 and the lower pole frame 2 are sequentially and closely stacked from top to bottom to form a small chamber structure, the upper pole frame 1 and the lower pole frame 2 are aligned with connecting hole positions, and the electrolytic small chamber is connected in sequence by inserting a tension bolt in the aligned connecting hole positions. By setting the insulating upper pole frame 1, the lower pole frame 2 and the insulating plate 4, the insulation between adjacent electrolytic small chambers is ensured.

[0029] At the same time, by setting the double-ring sealing structure 6 on the upper and lower sides of the insulating plate 4, the upper pole frame 1 and the top of the insulating plate 4, the lower pole frame 2 and the bottom of the insulating plate 4 are insulated and sealed. At the same time, the hydrogen side flow channel 7 is arranged in the inner side area of the double-ring sealing structure 6, and the oxygen side flow channel 8 is arranged in the outer side area of the double-ring sealing structure 6, so that the hydrogen side flow channel 7 and the oxygen side flow channel 8 are completely isolated by the double-ring sealing structure 6, thereby ensuring that the hydrogen generated at the hydrogen side flow channel 7 and the oxygen generated at the oxygen side flow channel 8 do not leak and mix with each other, thereby ensuring the safety of the electrolytic hydrogen production process. At the same time, the sealing effect of the double-ring sealing structure 6 on the upper and lower sides enables the entire electrolytic small chamber to withstand greater pressure, thereby enabling the input pressure of the alkaline electrolyte to be increased to improve the flowability of the alkaline electrolyte between adjacent electrolytic small chambers, thereby improving the efficiency of electrolytic hydrogen production.

[0030] Further, the upper pole frame 1 and the lower pole frame 2 are made of non-metallic materials, which utilize the inherent insulation of non-metallic materials to ensure the insulation between adjacent electrolytic small chambers in cooperation with the insulating plate 4.

[0031] Further, as shown in Figure 3 and Figure 4 The bottom edge of the upper pole frame 1 is provided with a positioning boss 101, and the top edge of the lower pole frame 2 is provided with a positioning groove 201 corresponding to the positioning boss 101. The corresponding combination between the positioning boss 101 and the positioning groove 201 enables the upper pole frame 1 and the lower pole frame 2 to be smoothly and closely combined.

[0032] Further, a diaphragm mounting area is arranged on the top surface or the bottom surface of the insulation plate, and the diaphragm 5 is press-fitted in the diaphragm mounting area, so that the diaphragm 5 is limited by the diaphragm mounting area to avoid movement of the diaphragm 5 and ensure the installation position of the diaphragm 5. Embodiment 2:

[0033] The embodiment discloses an insulation sealing structure of a hydrogen production device, which is optimized on the basis of Embodiment 1, as shown in the figure. Figure 2 The double-ring sealing structure 6 includes a first sealing ring 61 and a second sealing ring 62 arranged outside the first sealing ring 61, and the first sealing ring 61 and the second sealing ring 62 are arranged between the top pole frame 1 and the top of the insulation plate 4 and between the bottom pole frame 2 and the bottom of the insulation plate 4; the hydrogen-side flow channel 7 is located in the inner side area of the first sealing ring 61, and the oxygen-side flow channel 8 is located in the outer side area of the second sealing ring 62.

[0034] The first sealing ring 61 and the second sealing ring 62 form a double-ring sealing structure, and a sufficient gap is reserved between the first sealing ring 61 and the second sealing ring 62, so as to completely isolate the hydrogen-side flow channel 7 and the oxygen-side flow channel 8 and effectively avoid leakage and mixing of hydrogen and oxygen.

[0035] Further, as shown in the figure, Figure 5 The top surface and the bottom surface of the insulation plate 4 are provided with a first ring groove 41 corresponding to the first sealing ring 61 and a second ring groove 42 corresponding to the second sealing ring 62; the bottom of the upper pole frame 1 is provided with an upper pressing ring 11 corresponding to the first ring groove 41 and the second ring groove 42, respectively, and the top of the lower pole frame 2 is provided with a lower pressing ring 21 corresponding to the first ring groove 41 and the second ring groove 42, respectively.

[0036] During installation, first, the first sealing ring 61 is clamped into the inner side of the first ring groove 41, and the second sealing ring 62 is clamped into the inner side of the second ring groove 42, then the upper pole frame 1 is pressed and spliced on the top of the insulation plate 4, so that the upper pressing ring 11 is press-fitted into the inner side of the first ring groove 41 to press the first sealing ring 61 tightly and realize effective sealing between the upper pole frame 1 and the top of the insulation plate 4. Similarly, the lower pole frame 2 is pressed and spliced on the bottom of the insulation plate 4, so that the lower pressing ring 21 is press-fitted into the inner side of the second ring groove 42 to press the second sealing ring 62 tightly and realize effective sealing between the lower pole frame 2 and the bottom of the insulation plate 4.

[0037] Further, as shown in the figure, Figure 5As shown, the top surface and the bottom surface of the insulation plate 4 are provided with annular labyrinth tooth grooves 100 between the first annular groove 41 and the second annular groove 42, and the bottom of the upper pole frame 1 and the top of the lower pole frame 2 are provided with labyrinth tooth 200 corresponding to the annular labyrinth tooth groove 100. When the upper pole frame 1 is spliced to the top of the insulation plate 4 and the lower pole frame 2 is spliced to the bottom of the insulation plate 4, the annular labyrinth tooth groove 100 and the labyrinth tooth 200 are spliced to form a labyrinth tooth sealing structure at this time. Even if either the first sealing ring 61 or the second sealing ring 62 fails, the hydrogen side flow channel 7 and the oxygen side flow channel 8 can be effectively isolated by the labyrinth tooth sealing structure.

[0038] Further, the first annular groove 41 and the second annular groove 42 are circular grooves or waist-shaped grooves.

[0039] The remaining part of the embodiment is the same as that of Embodiment 1, and thus will not be described again. Embodiment 3:

[0040] The embodiment discloses an insulation sealing structure of a hydrogen production device, which is optimized on the basis of Embodiment 1 or 2. The spacing between the hydrogen side flow channel 7 and the inner side of the double-ring sealing structure 6 is greater than or equal to 3 mm, and the spacing between the oxygen side flow channel 8 and the outer side of the double-ring sealing structure 6 is greater than or equal to 3 mm. A sufficient gap is provided between the hydrogen side flow channel 7 and the inner side of the double-ring sealing structure 6, so that the hydrogen gas generated by the hydrogen side flow channel 7 can be effectively isolated in the inner side of the double-ring sealing structure 6. Similarly, a sufficient gap is provided between the oxygen side flow channel 8 and the outer side of the double-ring sealing structure 6, so that the oxygen gas generated by the oxygen side flow channel 8 can be effectively isolated in the outer side of the double-ring sealing structure 6, thereby avoiding mutual leakage and mixing between the hydrogen gas and the oxygen gas.

[0041] The remaining part of the embodiment is the same as that of Embodiment 1 or 2, and thus will not be described again.

[0042] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification or equivalent change made according to the technical essence of the present application falls within the protection scope of the present application.

Claims

1. An insulation sealing structure of a hydrogen production apparatus comprising an upper pole frame (1) and a lower pole frame (2), characterized in that, The upper pole frame (1) and the lower pole frame (2) are provided with a pole plate (3) and an insulating plate (4), one side of the insulating plate (4) is provided with a diaphragm (5); the top of the upper pole frame (1) and the insulating plate (4) and the bottom of the lower pole frame (2) and the insulating plate (4) are provided with a double-ring sealing structure (6), the inner side area of the upper pole frame (1), the lower pole frame (2) and the pole plate (3) corresponding to the double-ring sealing structure (6) is provided with a hydrogen side flow channel (7), and the outer side area of the upper pole frame (1), the lower pole frame (2) and the pole plate (3) corresponding to the double-ring sealing structure (6) is provided with an oxygen side flow channel (8).

2. The insulation sealing structure of a hydrogen generator according to claim 1, wherein The double-ring sealing structure (6) comprises a first sealing ring (61) and a second sealing ring (62) arranged outside the first sealing ring (61), and the first sealing ring (61) and the second sealing ring (62) are arranged between the top of the upper pole frame (1) and the insulating plate (4) and between the bottom of the lower pole frame (2) and the insulating plate (4); the hydrogen side flow channel (7) is located in the inner side area of the first sealing ring (61), and the oxygen side flow channel (8) is located in the outer side area of the second sealing ring (62).

3. The insulation sealing structure of a hydrogen generator according to claim 2, wherein The top surface and the bottom surface of the insulating plate (4) are provided with a first ring groove (41) corresponding to the first sealing ring (61) and a second ring groove (42) corresponding to the second sealing ring (62); the bottom of the upper pole frame (1) is provided with an upper compression ring (11) corresponding to the first ring groove (41) and the second ring groove (42) respectively, and the top of the lower pole frame (2) is provided with a lower compression ring (21) corresponding to the first ring groove (41) and the second ring groove (42) respectively.

4. The insulation sealing structure of a hydrogen generator according to claim 3, wherein The top surface and the bottom surface of the insulating plate (4) are provided with a ring-shaped labyrinth tooth groove (100) between the first ring groove (41) and the second ring groove (42), and the bottom of the upper pole frame (1) and the top of the lower pole frame (2) are provided with a labyrinth compression tooth (200) corresponding to the ring-shaped labyrinth tooth groove (100).

5. The insulation seal structure of a hydrogen generator according to claim 4, wherein The first ring groove (41) and the second ring groove (42) are circular grooves or waist-shaped grooves.

6. An insulation sealing structure of a hydrogen generator according to any one of claims 1 to 5, wherein The distance between the hydrogen side flow channel (7) and the inner side of the double-ring sealing structure (6) is greater than or equal to 3mm, and the distance between the oxygen side flow channel (8) and the outer side of the double-ring sealing structure (6) is greater than or equal to 3mm.

7. An insulation sealing structure of a hydrogen generator according to any one of claims 1 to 5, wherein The bottom edge of the upper pole frame (1) is provided with a positioning boss (101), and the top edge of the lower pole frame (2) is provided with a positioning groove (201) corresponding to the positioning boss (101).

8. An insulation sealing structure of a hydrogen generator according to any one of claims 1 to 5, wherein The upper pole frame (1) and the lower pole frame (2) are prepared from non-metallic materials.

9. An insulation sealing structure of a hydrogen generator according to any one of claims 1 to 5, wherein The top surface or the bottom surface of the insulating plate is provided with a diaphragm mounting area, and the diaphragm (5) is press-fitted in the diaphragm mounting area.

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