Pressure balancing device for polar-distance and zero-polar-distance unit slots

Abstract

The utility model discloses a pressure balancing device for unit grooves with polar distance and zero polar distance, which comprises a unit groove frame, a pressing ejector rod unit arranged on the unit groove frame, a plurality of elastic sheets arranged on the pressing ejector rod unit, an insulating seat unit sleeved on the pressing ejector rod unit, and an electrolytic bath copper bar pressing plate fixedly connected with the insulating seat unit. A plurality of zero-polar-distance unit grooves and a plurality of polar-distance unit grooves are formed in one face of the electrolytic bath copper bar pressing plate, extrusion pressure balancing devices are arranged on the two sides of the top between every two adjacent zero-polar-distance unit grooves, and extrusion pressure balancing devices are arranged on the two sides of the top between each zero-polar-distance unit groove and the adjacent polar-distance unit groove. And the plurality of zero-polar-distance unit slots and the plurality of polar-distance unit slots are respectively connected with the conductive slots through conductive strips. According to the pressure balancing device for the polar-distance and zero-polar-distance unit grooves, the problem that an ionic membrane is damaged when the pressing balance force and the pressing size of the polar-distance and zero-polar-distance unit grooves do not meet the requirements is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chlor-alkali equipment production in the chemical polyvinyl chloride industry, and specifically relates to a pressure balance device for a bipolar distance and zero-polar distance unit cell. Background Art

[0002] The cell types of the bipolar distance unit cell and the zero-polar distance unit cell have different requirements for the internal structure and auxiliary accessories design according to different electrolytic cell bipolar distances, and there are also different requirements for the assembly technology. According to the actual working conditions of production operation and the off-line inspection of abnormal operation equipment, different pressing balance forces and pressing dimensions are used for the bipolar distance and zero-polar distance ion-exchange membrane electrolytic cells. Including the influence of half-shell deformation and other factors during the later stage of equipment operation, the large extrusion force size between the entire unit cells is likely to cause damage to the ion-exchange membrane. Especially, the expansion of the equipment after heating poses a great hidden danger to the safe operation of the ion-exchange membrane electrolytic cell. The ion-exchange membrane electrolytic cell has a high current density during long-term operation, and even safety and environmental protection accidents may occur. Content of the Utility Model

[0003] The purpose of the utility model is to provide a pressure balance device for a bipolar distance and zero-polar distance unit cell, which solves the problem of ion-exchange membrane damage caused by the non-compliance of the pressing balance force and pressing dimension during the use of the bipolar distance and zero-polar distance ion-exchange membrane electrolytic cells.

[0004] The technical solution adopted by the utility model is that the pressure balance device for the bipolar distance and zero-polar distance unit cell includes a unit cell frame. A pressing ejector rod unit is arranged on the unit cell frame. A plurality of elastic pieces are arranged on the pressing ejector rod unit. An insulating seat unit is sleeved on the pressing ejector rod unit. The insulating seat units are commonly fixedly connected with an electrolytic cell copper bar pressing plate. On the side of the electrolytic cell copper bar pressing plate away from the insulating seat unit, a plurality of parallel zero-polar distance unit cells and a plurality of parallel bipolar distance unit cells are arranged. Squeezing pressure balance devices are arranged on both sides of the top between adjacent two zero-polar distance unit cells. Squeezing pressure balance devices are arranged on both sides of the top between the zero-polar distance unit cell and the adjacent bipolar distance unit cell. A plurality of zero-polar distance unit cells and a plurality of bipolar distance unit cells are respectively connected through conductive bars and conductive grooves.

[0005] The characteristics of the utility model also lie in that:

[0006] The distance between adjacent two elastic pieces is 6 mm - 7 mm.

[0007] The squeezing pressure balance device is in the shape of an insulating solid cylinder. The height of the squeezing pressure balance device is 249.5 mm - 250.5 mm, and the bottom diameter of the squeezing pressure balance device is 56 mm - 57 mm.

[0008] The anodes of two adjacent zero-pole-distance unit cells and two adjacent pole-distance unit cells are connected by conductive bars, and the cathodes of two adjacent zero-pole-distance unit cells and two adjacent pole-distance unit cells are connected by conductive grooves. The anode of the zero-pole-distance unit cell is connected to the cathode of the adjacent pole-distance unit cell by a conductive bar.

[0009] The pressing ejector rod unit includes 27 pressing ejector rods. The 27 pressing ejector rods are evenly arranged on two corresponding side faces and the bottom surface of the unit cell frame, and a number of elastic pieces are provided at the same end of the 27 pressing ejector rods.

[0010] The insulating seat unit includes 27 insulating seats. The 27 insulating seats are sleeved on the 27 pressing ejector rods one by one, and the insulating seats are arranged between a number of elastic pieces and the copper busbar pressing plate of the electrolytic cell.

[0011] The beneficial effects of the present utility model are:

[0012] The pressure balance device for pole-distance and zero-pole-distance unit cells provided by the present utility model ensures that the anode and cathode rib plates do not directly contact and bear force when the zero-pole-distance is ensured, stabilizes the distance and force between unit cells, and further ensures the uniform and stable force on the ion membrane. At the same time, it isolates the interference between adjacent unit cell areas, avoids the damage of the ion membrane caused by the contact of the electrode grid due to thermal expansion caused by temperature change. It reduces the cell voltage, saves energy consumption, and improves the safety and stability of the electrolytic cell. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the pressure balance device for pole-distance and zero-pole-distance unit cells of the present utility model.

[0014] In the figure, 1. Pressing ejector rod, 2. Elastic piece, 3. Copper busbar pressing plate of the electrolytic cell, 4. Extrusion pressure balance device, 5. Zero-pole-distance unit cell, 6. Pole-distance unit cell, 7. Unit cell frame, 8. Insulating seat. Detailed Embodiments

[0015] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments.

[0016] The pressure balance device for pole-distance and zero-pole-distance unit cells provided by the present utility model, as Figure 1As shown in the figure, it includes a unit cell frame 7. A pressing ejector rod unit is provided on the unit cell frame 7. A number of elastic pieces 2 are provided on the pressing ejector rod unit. An insulating seat unit is sleeved on the pressing ejector rod unit. The insulating seat units are commonly fixedly connected with an electrolytic cell copper bar pressing plate 3. On the side of the electrolytic cell copper bar pressing plate 3 away from the insulating seat unit, a number of parallel zero-pole-distance unit cells 5 and a number of parallel pole-distance unit cells 6 are arranged. On both sides of the top between two adjacent zero-pole-distance unit cells 5, extrusion pressure balance devices 4 are provided. On both sides of the top between the zero-pole-distance unit cell 5 and the adjacent pole-distance unit cell 6, extrusion pressure balance devices 4 are provided, which stabilizes the distance and force between unit cells, thereby ensuring uniform and stable force on the ion exchange membrane. At the same time, it isolates the interference of adjacent unit cell areas, avoiding damage to the ion exchange membrane caused by the contact of the electrode grid due to thermal expansion caused by temperature change. A number of zero-pole-distance unit cells 5 and a number of pole-distance unit cells 6 are respectively connected through conductive bars and conductive grooves; the distance between two adjacent elastic pieces 2 is 6 mm - 7 mm; the extrusion pressure balance device 4 is in the shape of an insulating solid cylinder, the height of the extrusion pressure balance device 4 is 249.5 mm - 250.5 mm, and the bottom diameter of the extrusion pressure balance device 4 is 56 mm - 57 mm; the anodes of two adjacent zero-pole-distance unit cells 5 and two adjacent pole-distance unit cells 6 are connected through conductive bars, the cathodes of two adjacent zero-pole-distance unit cells 5 and two adjacent pole-distance unit cells 6 are connected through conductive grooves, and the anode of the zero-pole-distance unit cell 5 is connected to the cathode of the adjacent pole-distance unit cell 6 through a conductive bar; the pressing ejector rod unit includes 27 pressing ejector rods 1, and the 27 pressing ejector rods 1 are evenly arranged on two corresponding side surfaces and the bottom surface of the unit cell frame 7. A number of elastic pieces 2 are provided at the same end of the 27 pressing ejector rods 1; the insulating seat unit includes 27 insulating seats 8, and the 27 insulating seats 8 are sleeved on the 27 pressing ejector rods 1 one by one, and the insulating seats 8 are arranged between a number of elastic pieces 2 and the electrolytic cell copper bar pressing plate 3.

[0017] The pressure balance device for pole-distance and zero-pole-distance unit cells provided by the present utility model has the following working principle: By measuring the distance between unit cells, when ensuring complete contact between unit cells, the gap between adjacent elastic pieces on the pressing ejector rod is adjusted from the original 4 mm to 6 mm - 7 mm. For unit cells with insufficient distance between unit cells, extrusion pressure balance devices are added, which stabilizes the distance and force between unit cells, thereby ensuring uniform and stable force on the ion exchange membrane. At the same time, it isolates the interference of adjacent areas, avoiding damage to the ion exchange membrane caused by the contact of the electrode grid due to thermal expansion of the unit cell caused by temperature change, improving the force uniformity and safety between unit cells, making the force on the ion exchange membrane in the unit cell more uniform, and having a high utilization rate of the anode electrode surface, ultimately realizing the safe, stable and efficient operation of the electrolytic cell.

[0018] Embodiment 1

[0019] The pressure balance device for pole-distance and zero-pole-distance unit cells proposed in this embodiment is as Figure 1As shown in the figure, it includes a unit cell frame 7. A pressing ejector rod unit is provided on the unit cell frame 7. A number of elastic pieces 2 are provided on the pressing ejector rod unit. An insulating seat unit is sleeved on the pressing ejector rod unit. The insulating seat units are commonly fixed with an electrolytic cell copper busbar pressing plate 3. On the side of the electrolytic cell copper busbar pressing plate 3 away from the insulating seat unit, a number of parallel zero-pole-distance unit cells 5 and a number of parallel pole-distance unit cells 6 are arranged. Squeezing pressure balance devices 4 are provided on both sides of the top between two adjacent zero-pole-distance unit cells 5. Squeezing pressure balance devices 4 are provided on both sides of the top between the zero-pole-distance unit cell 5 and the adjacent pole-distance unit cell 6. A number of zero-pole-distance unit cells 5 and a number of pole-distance unit cells 6 are respectively connected through conductive bars and conductive grooves.

[0020] Example 2

[0021] The pressure balance device for the pole-distance and zero-pole-distance unit cells proposed in this embodiment is as Figure 1 shown in the figure. It includes a unit cell frame 7. A pressing ejector rod unit is provided on the unit cell frame 7. A number of elastic pieces 2 are provided on the pressing ejector rod unit. An insulating seat unit is sleeved on the pressing ejector rod unit. The insulating seat units are commonly fixed with an electrolytic cell copper busbar pressing plate 3. On the side of the electrolytic cell copper busbar pressing plate 3 away from the insulating seat unit, a number of parallel zero-pole-distance unit cells 5 and a number of parallel pole-distance unit cells 6 are arranged. Squeezing pressure balance devices 4 are provided on both sides of the top between two adjacent zero-pole-distance unit cells 5. Squeezing pressure balance devices 4 are provided on both sides of the top between the zero-pole-distance unit cell 5 and the adjacent pole-distance unit cell 6. A number of zero-pole-distance unit cells 5 and a number of pole-distance unit cells 6 are respectively connected through conductive bars and conductive grooves; the distance between two adjacent elastic pieces 2 is 6 mm - 7 mm; the squeezing pressure balance device 4 is in the shape of an insulating solid cylinder. The height of the squeezing pressure balance device 4 is 249.5 mm - 250.5 mm, and the bottom diameter of the squeezing pressure balance device 4 is 56 mm - 57 mm.

[0022] Example 3

[0023] The pressure balance device for the pole-distance and zero-pole-distance unit cells proposed in this embodiment is as Figure 1As shown in the figure, it includes a unit cell frame 7. A pressing ejector rod unit is provided on the unit cell frame 7. A number of elastic pieces 2 are provided on the pressing ejector rod unit. An insulating seat unit is sleeved on the pressing ejector rod unit. The insulating seat units are commonly fixedly connected with an electrolytic cell copper bar pressing plate 3. On the side of the electrolytic cell copper bar pressing plate 3 away from the insulating seat unit, a number of parallel zero-pole-distance unit cells 5 and a number of parallel pole-distance unit cells 6 are arranged. Squeezing pressure balance devices 4 are provided on both sides of the top between two adjacent zero-pole-distance unit cells 5. Squeezing pressure balance devices 4 are provided on both sides of the top between the zero-pole-distance unit cell 5 and the adjacent pole-distance unit cell 6. A number of zero-pole-distance unit cells 5 and a number of pole-distance unit cells 6 are respectively connected through conductive bars and conductive grooves; the distance between two adjacent elastic pieces 2 is 6 mm - 7 mm; the squeezing pressure balance device 4 is in the shape of an insulating solid cylinder. The height of the squeezing pressure balance device 4 is 249.5 mm - 250.5 mm, and the bottom diameter of the squeezing pressure balance device 4 is 56 mm - 57 mm; the anodes of two adjacent zero-pole-distance unit cells 5 and two adjacent pole-distance unit cells 6 are connected through conductive bars, the cathodes of two adjacent zero-pole-distance unit cells 5 and two adjacent pole-distance unit cells 6 are connected through conductive grooves, and the anode of the zero-pole-distance unit cell 5 is connected with the cathode of the adjacent pole-distance unit cell 6 through a conductive bar.

[0024] Example 4

[0025] The pressure balance device for the pole-distance and zero-pole-distance unit cells proposed in this example, as Figure 1As shown in the figure, it includes a unit cell frame 7. A pressing ejector rod unit is provided on the unit cell frame 7. A number of elastic pieces 2 are provided on the pressing ejector rod unit. An insulating seat unit is sleeved on the pressing ejector rod unit. The insulating seat units are fixedly connected with an electrolytic cell copper bar pressing plate 3 together. On the side of the electrolytic cell copper bar pressing plate 3 away from the insulating seat unit, a number of parallel zero-pole-distance unit cells 5 and a number of parallel pole-distance unit cells 6 are arranged. On both sides of the top between two adjacent zero-pole-distance unit cells 5, extrusion pressure balance devices 4 are provided. On both sides of the top between the zero-pole-distance unit cell 5 and the adjacent pole-distance unit cell 6, extrusion pressure balance devices 4 are provided. A number of zero-pole-distance unit cells 5 and a number of pole-distance unit cells 6 are respectively connected through conductive bars and conductive grooves; the distance between two adjacent elastic pieces 2 is 6 mm - 7 mm; the extrusion pressure balance device 4 is in the shape of an insulating solid cylinder. The height of the extrusion pressure balance device 4 is 249.5 mm - 250.5 mm, and the bottom diameter of the extrusion pressure balance device 4 is 56 mm - 57 mm; the anodes of two adjacent zero-pole-distance unit cells 5 and two adjacent pole-distance unit cells 6 are connected through conductive bars, the cathodes of two adjacent zero-pole-distance unit cells 5 and two adjacent pole-distance unit cells 6 are connected through conductive grooves, and the anode of the zero-pole-distance unit cell 5 is connected with the cathode of the adjacent pole-distance unit cell 6 through a conductive bar; the pressing ejector rod unit includes 27 pressing ejector rods 1. The 27 pressing ejector rods 1 are evenly arranged on two corresponding sides and the bottom surface of the unit cell frame 7. A number of elastic pieces 2 are provided at the same end of the 27 pressing ejector rods 1; the insulating seat unit includes 27 insulating seats 8. The 27 insulating seats 8 are sleeved on the 27 pressing ejector rods 1 one by one. The insulating seats 8 are arranged between a number of elastic pieces 2 and the electrolytic cell copper bar pressing plate 3.

Claims

1. A pressure balancing device for cell slots with polarity and zero polarity, characterized in that: The invention comprises a unit slot frame (7), wherein a pressing push rod unit is provided on the unit slot frame (7), wherein a plurality of spring sheets (2) are provided on the pressing push rod unit, wherein an insulating seat unit is sleeved on the pressing push rod unit, wherein the insulating seat unit is fixedly connected with a copper bar pressing plate (3) of an electrolytic cell, wherein a plurality of parallel zero-pole-gap unit slots (5) and a plurality of parallel polar-gap unit slots (6) are arranged on a side of the copper bar pressing plate (3) of the electrolytic cell away from the insulating seat unit, wherein an extrusion pressure balancing device (4) is provided on both sides of the top between two adjacent zero-pole-gap unit slots (5), wherein an extrusion pressure balancing device (4) is provided on both sides of the top between the zero-pole-gap unit slot (5) and the adjacent polar-gap unit slot (6), and the plurality of zero-pole-gap unit slots (5) and the plurality of polar-gap unit slots (6) are respectively connected to the conductive slot via conductive strips.

2. The pressure balancing device for polarity and zero polarity unit slots according to claim 1, characterized in that: The distance between two adjacent spring pieces (2) is 6 mm to 7 mm.

3. The pressure balancing device for polarity and zero polarity unit slots according to claim 1, characterized in that: The extrusion pressure balancing device (4) is in the shape of an insulating solid cylinder, the height of the extrusion pressure balancing device (4) is 249.5 mm-250.5 mm, and the bottom diameter of the extrusion pressure balancing device (4) is 56 mm-57 mm.

4. The pressure balancing device for polarity and zero polarity unit slots according to claim 1, characterized in that: The anodes of two adjacent zero-pole-gap unit slots (5) and two adjacent pole-gap unit slots (6) are connected via conductive strips, the cathodes of two adjacent zero-pole-gap unit slots (5) and two adjacent pole-gap unit slots (6) are connected via conductive strips, and the anodes of the zero-pole-gap unit slots (5) and the cathodes of the adjacent pole-gap unit slots (6) are connected via conductive strips.

5. The pressure balancing device for polarity and zero polarity unit slots according to claim 1, characterized in that: The clamping push rod unit comprises 27 clamping push rods (1), the 27 clamping push rods (1) are evenly arranged on two corresponding side surfaces and a bottom surface of the unit slot frame (7), and a plurality of spring sheets (2) are arranged at the same end of the 27 clamping push rods (1).

6. The pressure balancing device for polarity and zero polarity unit slots according to claim 5, characterized in that: The insulating seat unit comprises 27 insulating seats (8), the 27 insulating seats (8) are sleeved on the 27 pressing top rods (1) in a one-to-one correspondence, and the insulating seats (8) are arranged between a plurality of the spring sheets (2) and the electrolytic cell copper bar pressing plates (3).

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