CN220099217U - Electrode frame, polar plate and electrolytic tank - Google Patents

Abstract

The utility model provides a polar frame, a polar plate and an electrolytic tank, and relates to the technical field of electrolytic devices. The pole frame comprises a frame body, and the frame body is provided with M-level fluid flow passages and mounting holes for accommodating the main pole plates; the M-stage fluid flow channels are used for communicating with the inner wall of the mounting hole at one side of the main polar plate and forming inner communication openings, the first-stage fluid flow channels are used for communicating with the outside at positions outside the mounting hole and forming outer communication openings, the number of the inner communication openings is larger than that of the outer communication openings, M is larger than or equal to 2, and M is an integer; the inner communication ports comprise at least two calibrated inner communication ports, the fluid flow directions at the positions of the at least two calibrated inner communication ports are arranged in an included angle mode, and/or all the inner communication ports comprise first sections which are at least partially positioned outside the calibrated profile sections in the profile sections corresponding to the calibration lines based on the mounting holes, the calibration lines are profile lines formed by projection of the circumferential inner walls of the mounting holes along the thickness direction of the frame body, and the calibrated profile sections are profile sections corresponding to the first-stage flow channels on the calibration lines.

Description

Electrode frame, polar plate and electrolytic tank

Technical Field

The utility model relates to the technical field of electrolytic devices, in particular to a polar frame, a polar plate and an electrolytic tank.

Background

The electrolytic tank of the hydrogen production system is generally composed of a plurality to hundreds of electrolytic cells connected in series, and each electrolytic cell is composed of a polar plate, an electrode, a diaphragm and other components. The electrode plate comprises a electrode frame and a main electrode plate, wherein the electrode plate is taken as a bipolar electrode plate as an example, and an anode cavity and a cathode cavity for electrolysis are formed at two sides of the main electrode plate. The electrode frame is provided with a pore canal which is communicated with the cathode chamber or the anode chamber, and the pore canal is generally divided into two types, specifically a pore canal for the inflow of electrolyte and a pore canal for the outflow of electrolysis products. The pore channel generally comprises a communication hole arranged along the thickness direction of the polar frame, and the communication hole is communicated with the electrolysis chamber through the liquid dividing tank.

Because of the need for arranging the channels on the polar frame and the need for a certain rigidity, the size of the channels, particularly the size of the communication holes, is difficult to design to be large enough to cover the whole electrolytic chamber, so that the range covered by the channels in the circumferential direction of the electrolytic chamber is relatively small, the fluid near the channels in the electrolytic chamber can flow faster, the fluid far from the channels can flow slower, and even a dead flow area exists in extreme cases. This can lead to a series of problems such as low inflow efficiency of the electrolyte or outflow efficiency of the electrolysis product, low flow equalization of the fluid in the electrolysis chamber, uneven temperature, etc., and eventually lower electrolysis efficiency in the electrolysis chamber.

Disclosure of Invention

The utility model aims to solve the problems of low flow equalization performance and low electrolysis efficiency of fluid in an electrolysis cavity caused by smaller coverage of a pore canal in the related technology to a certain extent.

In order to solve at least one aspect of the above problems at least to some extent, in a first aspect, the present utility model provides a pole frame, including a frame body, the frame body being provided with an M-stage fluid flow channel and a mounting hole for accommodating a main pole plate;

the M-level fluid flow channels are used for communicating with the inner wall of the mounting hole at one side of the main polar plate and forming inner communication openings, the first-level flow channels are used for communicating with the outside at positions outside the mounting hole and forming outer communication openings, the number of the inner communication openings is larger than that of the outer communication openings, M is larger than or equal to 2, and M is an integer;

the internal communication ports comprise at least two calibrated internal communication ports, at least two fluid flow directions at the positions of the calibrated internal communication ports are arranged in an included angle mode, and/or all the internal communication ports comprise first sections which are at least partially positioned outside calibrated outline sections in outline sections corresponding to calibration lines based on the mounting holes, the calibration lines are outline lines formed by projection of the circumferential inner walls of the mounting holes along the thickness direction of the frame body, and the calibrated outline sections are outline sections corresponding to the first-stage flow channels on the calibration lines.

Optionally, the one end that is close to the mounting hole of M level fluid runner is provided with runner groove and at least one water conservancy diversion structure, the runner groove with the mounting hole intercommunication forms first total mouth, water conservancy diversion structure sets up first total mouth department, water conservancy diversion structure's both sides form respectively M level runner.

Optionally, when m=2, at least two of the calibrated internal communication ports are respectively communicated with the same M-1 stage flow channel through the corresponding M stage flow channel;

when M is more than or equal to 3, at least two calibration inner communication ports are respectively communicated with the same M-1 level flow passage through corresponding M level flow passages, and/or at least two calibration inner communication ports are respectively communicated with different M-1 level flow passages through corresponding M level flow passages.

Optionally, the flow guiding structure comprises at least one calibration flow guiding structure; the two sides of the calibration flow guiding structure are used for forming a guide inclined plane, and the guide inclined plane is obliquely arranged relative to the normal line of the inner wall of the mounting hole at the center point of the first main port.

Optionally, the M-level fluid flow channels are correspondingly provided with a plurality of calibration diversion structures distributed along the circumferential direction of the mounting hole;

the guide inclined planes formed by the calibration flow guide structure are distributed radially along the direction away from the M-1 level flow channel; and/or, one or more calibration flow guide structures are arranged on two sides of the normal along the circumferential direction of the mounting hole.

Optionally, the calibration flow guiding structure comprises a guiding inclined plate structure, and the side surface of the guiding inclined plate structure is used for forming the guiding inclined plane;

and/or, on the projection along the thickness direction of the frame body, the calibration flow guiding structures at two sides of the normal line are symmetrically arranged about the normal line.

Optionally, the cross section area of the runner groove is larger than the corresponding cross section area of the M-1 level runner at the adjacent end surfaces of the runner groove and the M-1 level runner, and the flow guiding structure and the M-1 level runner are arranged at intervals along the flowing direction of the fluid.

Optionally, a flow passage opening of the M-1 stage flow passage, which is close to one end of the M stage flow passage, is a calibration flow passage opening, and the M stage fluid flow passage is a liquid inlet flow passage, and the liquid inlet flow passage is used for allowing electrolyte to flow into an electrolysis chamber at one side of the main polar plate;

the flow guiding structure of the liquid inlet flow channel comprises a first flow guiding structure, and the first flow guiding structure is arranged opposite to the corresponding calibration flow channel opening;

and/or, a plurality of flow guiding structures are arranged in the flow channel groove of the liquid inlet flow channel, wherein the flow guiding structures are circumferentially distributed on one side or two sides of the standard flow channel opening along the mounting hole, are positioned in the flow guiding structures on the same side of the standard flow channel opening along the circumferential direction of the mounting hole, at least a plurality of flow guiding structures meet a decreasing rule, the decreasing rule comprises a first length which is more far away from the standard flow channel opening and corresponds to the flow guiding structure, and the first length is the distance from one end, away from the inner wall of the mounting hole, of the flow guiding structure to the inner wall of the mounting hole.

Optionally, the runner groove includes being close to the first slot section that the mounting hole set up and is located first slot section and corresponding second slot section between the M-1 level runner, first slot section with the mounting hole intercommunication forms first total mouth, second slot section with corresponding M-1 level runner intercommunication forms the standard flow mouth, first total mouth with the standard flow mouth is in the profile section that the standard line corresponds is not coincident each other, the cross-sectional area of second slot section is greater than the cross-sectional area of first slot section.

Optionally, all the internal connection ports include a second section at least partially located on the calibration contour section in the contour section corresponding to the calibration line;

and/or the length of the covering profile section is greater than that of the calibration profile section, and the covering profile section comprises profile sections corresponding to the internal connection ports on the calibration line and connecting profile sections which are positioned on the calibration line and are used for connecting the profile sections corresponding to the adjacent internal connection ports.

Optionally, the calibration profile section falls completely on the cover profile section, and one or both ends of the cover profile section exceed the calibration profile section.

Optionally, at least one side of the main electrode plate along the thickness direction in the mounting hole is used for forming an electrolysis chamber, and at least one liquid inlet runner and/or at least one liquid outlet runner are included in the M-level fluid runners corresponding to the electrolysis chamber on the same side, wherein the liquid inlet runner is used for flowing electrolyte into the corresponding electrolysis chamber, and the liquid outlet runner is used for flowing electrolyte out of the corresponding electrolysis chamber;

and/or the primary flow passage penetrates through the frame body to at least one side along the thickness direction and forms the outer communication port at the end part;

and/or, when M is more than or equal to 3, each stage of runner between the M stage of runner and the first stage of runner is a middle stage runner, and the width of at least one runner of the first stage or the plurality of stages of middle stage runners is gradually reduced along the direction close to the first stage runner.

In a second aspect, the present utility model provides a pole plate comprising a pole frame as described in the first aspect above.

Optionally, the main polar plate is provided with a concave-convex structure, and the cross section of the concave-convex structure is circular or prismatic.

Optionally, the connection line of the acute angle vertexes of the prisms extends along the up-down direction.

In a third aspect, the present utility model provides an electrolysis cell comprising a plate as described in the second aspect above.

Compared with the prior art, in the pole frame, the pole plate and the electrolytic tank, the M-level fluid flow channels are arranged, wherein the M-level fluid flow channels are used for being communicated with the inner wall of the mounting hole at one side of the main pole plate and forming an inner communication port, the first-level fluid flow channels are used for being communicated with the outside at positions outside the mounting hole and forming an outer communication port, the number of the inner communication ports is larger than that of the first-level fluid flow channels, namely, the number of the M-level fluid flow channels is larger than that of the first-level fluid flow channels, so that the other all-level fluid flow channels can be structurally designed under the condition that the cross section area of the first-level fluid flow channels is not increased, and the covering requirement of one end of the inner communication port of the M-level fluid flow channels is met. Specifically, when the fluid flow directions at the positions of the at least two calibrated inner communication ports are arranged in an included angle, the range covered by all the inner communication ports can be enlarged, and/or when all the inner communication ports comprise a first section which is at least partially positioned outside the calibrated profile section in the profile section corresponding to the calibration line based on the mounting hole, the position limitation of the inner communication ports can be reduced, the region limitation covered by the inner communication ports can be reduced, and the range covered by all the inner communication ports can be enlarged to a certain extent. Thus, when the M-stage fluid flow channel is used for supplying electrolyte to the electrolysis chamber on one side of the main polar plate (namely, the M-stage fluid flow channel is a liquid inlet flow channel), the electrolyte can be conveniently and rapidly distributed to the whole electrolysis chamber, the fluidity of the electrolyte is improved, at the moment, when the position of the first-stage flow channel is higher than the extreme case of the lowest end of the electrolysis chamber, the fluid at the position of the calibrated inner communication port can flow to the position close to the lowest end through the structural design of the calibrated inner communication port, and/or at least one inner communication port is arranged close to the lowest end relative to the first-stage flow channel, so that the dead zone of flow at the position of the lowest end in extreme cases can be avoided. For example, when the electrolyte product for the M-stage fluid flow channel flows out, the receiving range of the electrolyte product can be enlarged, so that the electrolyte product can be discharged quickly (i.e. the M-stage fluid flow channel is a flow-out flow channel). The utility model can facilitate the rapid inflow of electrolyte or the rapid outflow of electrolysis products to a certain extent, can improve the flow equalization property of fluid in an electrolysis cavity and can improve the electrolysis efficiency to a certain extent; and the cross-sectional area of the primary flow channel is not increased, so that the increase of the electric quantity leaked from the primary flow channel caused by the overlarge cross-sectional area of the primary flow channel can be avoided, and the structural stability of the frame body of the pole frame can be prevented from being influenced due to the overlarge cross-sectional area of the primary flow channel.

Drawings

Fig. 1 is a schematic structural diagram of a polar plate when M is 2 in an embodiment of the utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the structure in which the first segment is located outside the calibration contour segment and the second segment is located inside the calibration contour segment when the calibration line shown in FIG. 2 is circular;

FIG. 4 is a schematic view of the plate of FIG. 1 from another view;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is a schematic view of a structure of a cover profile segment of an outflow channel with both ends beyond a nominal profile segment in accordance with yet another embodiment of the present utility model;

FIG. 7 is a schematic view of a plate structure when the guide structure includes a guide sloping plate structure according to another embodiment of the present utility model;

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

FIG. 9 is a schematic view of a plate structure according to another embodiment of the present utility model;

FIG. 10 is a schematic view of the structure of the outflow channel of FIG. 9 with both ends of the covering contour beyond the calibration contour;

FIG. 11 is a schematic view of a plate structure according to another embodiment of the present utility model;

fig. 12 is a partial enlarged view at D in fig. 11.

Reference numerals illustrate:

s-marking a line; s0, calibrating a profile section; s1, covering a profile section; s11-a first section; s12-a second section; r1-anode chamber; r2-cathode chamber; SA-adjacent end face; SB-calibrating plane;

1-a frame; 2-M stage fluid flow channels; 21-a liquid inlet flow channel; 22-outflow channel; 200-primary flow channels; 201-M stage flow channels; 2011-a first M-stage flow channel; 2012-second M stage flow path; 2013-a third M stage flow channel; 2014-fourth M-stage flow channels; 202-an intermediate stage flow path; 203-an inner connection port; 204-an external communication port; 205-runner grooves; 206-calibrating a flow guiding structure; 2060-a guide ramp; 2061-a first guided swash plate structure; 2062-a second guiding swash plate structure; 2063-a third guide swash plate structure; 2064-fourth guide swash plate structure; 207-a first flow guiding structure; 208-a first bus port; 209-marking the orifice; 3-mounting holes; 4-a main pole plate; 41-concave-convex structure.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

The Z-axis in the drawing represents vertical, i.e., up-down position, and the positive direction of the Z-axis (i.e., the arrow of the Z-axis points) represents up, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis) represents down; the X-axis in the drawing indicates a horizontal direction and is designated as a left-right position, and the positive direction of the X-axis (i.e., the arrow of the X-axis is directed) indicates a right side, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) indicates a left side; the Y-axis in the drawing indicates the front-back position, and the positive direction of the Y-axis (i.e., the arrow of the Y-axis is directed) indicates the front side, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) indicates the rear side; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented, configured or operated in a particular orientation, and therefore should not be construed as limiting the utility model.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a pole frame, which includes a frame body 1, wherein the frame body 1 is provided with an M-stage fluid flow channel 2 and a mounting hole 3 for accommodating a main pole plate 4;

in the M-stage fluid flow channel 2, the M-stage flow channel 201 is used for communicating with the inner wall of the mounting hole 3 at one side of the main polar plate 4 and forming an inner communication port 203, the first-stage flow channel 200 is used for communicating with the outside at a position outside the mounting hole 3 and forming an outer communication port 204, the number of the inner communication ports 203 is larger than that of the outer communication ports 204, M is more than or equal to 2, and M is an integer;

the internal communication ports 203 include at least two calibrated internal communication ports, the fluid flow directions at the positions of the at least two calibrated internal communication ports are arranged in an included angle (hereinafter referred to as a first case), and/or all the internal communication ports 203 include a first section S11 which is at least partially positioned outside a calibrated profile section S0 in a profile section corresponding to a calibration line S based on the mounting hole 3, the calibration line S is a profile line formed by projection of the circumferential inner wall of the mounting hole 3 along the thickness direction of the frame body 1, and the calibrated profile section S0 is a profile section corresponding to the primary flow channel 200 on the calibration line S (hereinafter referred to as a second case).

As shown in fig. 4 and 5, specifically, when the main electrode plate 4 is accommodated in the mounting hole 3, both electrode plates are formed, and at least one side of the main electrode plate 4 in the thickness direction of the frame body 1 in the mounting hole 3 is used for forming an electrolytic chamber, and at this time, the electrolytic chamber is correspondingly provided with at least one M-stage fluid flow channel 2. The electrode plates may be bipolar electrode plates, and in this case, two sides of the main electrode plate 4 respectively form an electrolysis chamber, and the two electrolysis chambers are respectively an anode chamber R1 and a cathode chamber R2 (for convenience of description, the electrolysis chamber located in the opposite direction of the X axis is defined as the anode chamber R1 in the following). Of course, the electrode plate may be a middle electrode plate or an end electrode plate. The specific implementation of the main pole plate 4 accommodated in the mounting hole 3 may be a related art, which is not limited, for example, the frame 1 is used for connecting the inner wall of the mounting hole 3 with the circumferential edge of the main pole plate 4, for example, when the frame 1 is made of a metal material, and the two may be welded.

It should be noted that, the M-stage fluid flow channels 2 disposed corresponding to the same electrolytic chamber include at least one liquid inlet flow channel 21 and/or at least one liquid outlet flow channel 22, as shown in fig. 1, 2, 4 and 5, which illustrate a case where the anode chamber R1 is correspondingly provided with three liquid inlet flow channels 21 and three outlet flow channels 22 in communication. The electrolyte inlet flow channel 21 is used for enabling electrolyte to flow into the corresponding electrolysis chamber, and the electrolyte outlet flow channel 22 is used for enabling electrolyte to flow out of the corresponding electrolysis chamber. In the present description, the advantage of the present utility model will be described with respect to the M-stage dispersion flow provided in correspondence with the same electrolytic chamber, for example, the anode chamber R1, and the M-stage dispersion flow is exemplified as the liquid inlet flow path 21. It should be appreciated that the M-stage dispersion flow has similar advantages for the outflow channel 22.

In the first case, as shown in fig. 2 and 3, the M-stage flow path 201 includes a first M-stage flow path 2011, a second M-stage flow path 2012, a third M-stage flow path 2013 and a fourth M-stage flow path 2014, fluid directions of the internal connection ports 203 corresponding to the first M-stage flow path 2011, the second M-stage flow path 2012, the third M-stage flow path 2013 and the fourth M-stage flow path 2014 are different from each other, and the internal connection ports 203 corresponding to the first M-stage flow path 2011, the second M-stage flow path 2012, the third M-stage flow path 2013 and the fourth M-stage flow path 2014 are all calibrated internal connection ports. When the electrolyte inlet flow channel 21 is used, the coverage area of the electrolyte can be enlarged without increasing the coverage area of the primary flow channel 200, so that the electrolyte can be conveniently and rapidly distributed to the whole electrolyte chamber. When used in the outflow channel 22, a greater range of electrolysis products can be collected and discharged, facilitating rapid discharge of the electrolysis products.

It should be understood herein that the calibrated internal communication port is selected from the internal communication port 203, and the fluid flow direction at the calibrated internal communication port is the main or theoretical direction of the fluid passing through the calibrated internal communication port, and generally, it may be understood that the tangential direction of the center line of the M-stage flow channel 201 corresponding to the calibrated internal communication port at the center point of the calibrated internal communication port, and when the cross-sectional shape of the M-stage flow channel 201 is a uniform regular shape, such as a rectangle, the fluid flow direction corresponding to the calibrated internal communication port is consistent with the extending direction of the center line. However, it should be understood that in actual operation, the fluid direction corresponding to the calibrated internal communication port may have a certain angle error with the theoretical direction.

In case two, the marked line S in fig. 2 is indicated by a thick solid line, and the covering contour segment S1 is schematically circled by a two-dot chain line; in fig. 3, the calibration contour segment S0 is schematically circled by a two-dot chain line, and the first segment S11 and the second segment S12 are shown by thick solid lines.

The shape of the calibration line S is determined according to the contour shape of the circumferential inner wall of the mounting hole 3, and in an ideal state (for example, in a case where no other structure is provided on the circumferential side wall of the mounting hole 3), the two substantially coincide, specifically, the calibration line S is a contour formed by orthographic projection of the circumferential inner wall of the mounting hole 3 in the thickness direction (i.e., X-axis direction in the drawing) of the frame body 1. For the sake of understanding, the present utility model is described by taking the polar plate as the bipolar plate and the frame 1 of the polar frame as the circle, at this time, the calibration line S is circular, as shown in fig. 2 and 3, the first segment S11 is an arc segment corresponding to the internal connection port 203 of the first M-stage flow channel 2011 on the calibration line S, and as shown in fig. 3, on the projection along the thickness direction of the frame 1, a connection line with the center of the circle is formed through the two end points of the first-stage flow channel 200 along the circumferential direction of the mounting hole 3, and a contour segment corresponding to the two intersection points formed by the two connection lines and the calibration line S on the calibration line S is the calibration contour segment S0. When the frame body 1 of the pole frame is rectangular, the calibration line S is rectangular, and on the projection along the thickness direction of the frame body 1, a connection line perpendicular to the rectangular edge is made along the circumferential direction of the mounting hole 3 through the two end points of the primary flow channel 200, so as to obtain a calibration contour segment S0.

In the second case, the position limitation of the inner connection port 203 corresponding to the M-stage flow channel 201 is reduced, for example, the inner connection port 203 of the first M-stage flow channel 2011 may exceed the range corresponding to the first-stage flow channel 200, so as to improve the liquid inlet coverage of the liquid inlet flow channel 21 and improve the liquid inlet uniformity.

Of course, as shown in fig. 2 and 3, the M-stage fluid flow passage 2 may satisfy the first or second condition.

In addition, it should be noted that, along the direction from the inner communication port 203 to the outer communication port 204, the number of the channels at each stage sequentially decreases, that is, in the same M-stage fluid channel 2, the number of the N-stage channels is greater than the number of the N-1 stage channels, specifically, the N-stage channels are disposed away from the outer communication port 204 relative to the N-1 stage channels, wherein at least two N-stage channels are correspondingly communicated with the same N-1 stage channel, M is greater than or equal to N and greater than or equal to 2, and M and N are integers.

Illustratively, the number of each stage of flow channels decreases in sequence in the direction from the inner communication port 203 to the outer communication port 204.

Thus, by providing the M-stage fluid flow channels 2, wherein the M-stage fluid flow channels 201 are used for communicating with the inner wall of the mounting hole 3 at one side of the main pole plate 4 and forming the inner communication port 203, the first-stage fluid flow channels 200 are used for communicating with the outside at a position outside the mounting hole 3 and forming the outer communication ports 204, and the number of the inner communication ports 203 is greater than that of the first-stage fluid flow channels 200, that is, the number of the M-stage fluid flow channels 201 is greater than that of the first-stage fluid flow channels 200, so that structural design can be performed on other all-stage fluid flow channels without increasing the cross-sectional area of the first-stage fluid flow channels 200, thereby meeting the coverage requirement of one end of the inner communication ports 203 of the M-stage fluid flow channels 2. Specifically, when the fluid flow directions at the positions of the at least two calibrated inner communication ports are arranged at an included angle, the range covered by all the inner communication ports 203 can be increased, and/or when all the inner communication ports 203 include the first segment S11 located at least partially outside the calibrated profile segment S0 in the profile segment corresponding to the calibration line S based on the mounting hole 3, the position restriction on the inner communication ports 203 can be reduced, the region restriction covered by the inner communication ports 203 can be reduced, and thus the range covered by all the inner communication ports 203 can be increased to some extent. Thus, when the M-stage fluid flow channel 2 is used for supplying electrolyte to the electrolytic chamber on one side of the main electrode plate 4 (namely, the M-stage fluid flow channel 2 is a liquid inlet flow channel 21), the electrolyte can be conveniently and rapidly distributed to the whole electrolytic chamber, the fluidity of the electrolyte is improved, and at the moment, when the position of the primary flow channel 200 is higher than the extreme case of the lowest end of the electrolytic chamber, the fluid flow at the calibrated inner communication port may be caused to flow toward a position near the lowermost end by the calibrated inner communication port structural design and/or at least one inner communication port 203 may be caused to be disposed near the lowermost end with respect to the primary flowpath 200, thereby avoiding flow dead space at the lowermost end position in extreme cases. For example, when the M-stage fluid flow channel 2 is used for discharging the electrolyte product, the receiving range of the electrolyte product can be enlarged, so that the electrolyte product can be discharged quickly (i.e. the M-stage fluid flow channel 2 is the outflow flow channel 22). The utility model can facilitate the rapid inflow of electrolyte or the rapid outflow of electrolysis products to a certain extent, can improve the flow equalization property of fluid in an electrolysis cavity and can improve the electrolysis efficiency to a certain extent; in addition, the cross-sectional area of the primary flow channel 200 is not increased, so that the increase of the electric leakage amount from the primary flow channel 200 caused by the overlarge cross-sectional area of the primary flow channel 200 can be avoided, and the influence on the structural stability of the frame body 1 of the pole frame caused by the overlarge cross-sectional area of the primary flow channel 200 can be avoided.

As shown in fig. 2 to 5, alternatively, the primary flow passage 200 is provided through the frame 1 to at least one side in the thickness direction and forms an outer communication port 204 at an end portion.

As shown in fig. 5, when the electrode plate is a bipolar electrode plate, the primary flow channel 200 includes communication holes penetrating the frame 1 in the thickness direction to both ends thereof and forming outer communication ports 204, respectively. When the M-stage fluid flow channel 2 is the liquid inlet flow channel 21, one or two external communication ports 204 are correspondingly provided with a secondary flow channel in communication (as shown in fig. 1 to 5, which show the case where m=2 and the M-stage flow channel 201 is the secondary flow channel).

Thus, when a plurality of plates together form an electrolysis cell, the primary flow channels 200 of the electrode frames of the plurality of plates may be utilized to communicate in a coaxial manner, for example, with communication between the electrolysis cells being achieved without the need for external plumbing between the plates. When, for example, the primary flow path 200 penetrates the frame 1 to both sides in the thickness direction of the frame 1, the primary flow path 200 of the liquid inlet flow path 21 may be used to form an electrolyte-separating main flow path of the electrolytic cell, the other stages of flow paths of the liquid inlet flow path 21 together form an electrolyte-separating sub-flow path of the electrolytic cell, so as to distribute the electrolyte to the electrolytic chamber, the primary flow path 200 of the liquid outlet flow path 22 may be used to form an electrolyte-discharging main flow path of the electrolytic cell, and the other stages of flow paths of the liquid outlet flow path 22 together form an electrolyte-discharging sub-flow path of the electrolytic cell, so as to discharge the electrolyte in the electrolytic chamber.

As shown in fig. 1 to 3, optionally, when m=2, at least two calibration inner communication ports are respectively communicated with the same M-1 stage flow channel through the corresponding M stage flow channel 201 (the opening directions of the at least two calibration inner communication ports are set at an included angle).

Specifically, in fig. 2 and 3, the M-stage flow channels 201 include a first M-stage flow channel 2011, a second M-stage flow channel 2012, a third M-stage flow channel 2013 and a fourth M-stage flow channel 2014, and fluid flow directions of the inner communication ports 203 corresponding to the four M-stage flow channels 201 are different from each other, so that all the inner communication ports 203 can obtain a larger coverage area.

Optionally, when M is greater than or equal to 3, at least two calibration inner communication ports are respectively communicated with the same M-1 level flow channel through the corresponding M level flow channel 201 (the former mode is called later), and/or at least two calibration inner communication ports are respectively communicated with different M-1 level flow channels through the corresponding M level flow channel 201 (the latter mode is called later).

In the former mode, the flow direction of the fluid in at least two M-stage flow channels 201 communicating with the same M-1 stage flow channel is different, and in the latter mode, the flow direction of the fluid in each M-stage flow channel 201 communicating with the same M-1 stage flow channel is the same, and the flow directions of the fluid in at least two M-stage flow channels 201 respectively communicating with different M-1 stage flow channels are different. At this time, the specific setting manner may be determined according to actual requirements, and will not be described in detail herein.

The foregoing will be taken as an example to explain the content of the present utility model.

Optionally, a flow channel groove 205 and at least one flow guiding structure are disposed at one end of the M-stage fluid flow channel 2 near the mounting hole 3, where the flow channel groove 205 communicates with the mounting hole 3 and forms a first total opening 208 (refer to the part of fig. 8 with double stippled coil), the flow guiding structure is disposed at the first total opening 208, and two sides of the flow guiding structure form the M-stage flow channel 201 respectively.

In this case, the internal communication ports 203 formed in the M-stage flow channels 201 on both sides of the flow guiding structure may be calibrated internal communication ports or non-calibrated internal communication ports, which will not be described in detail herein.

Optionally, the flow guiding structure includes at least one calibration flow guiding structure 206, and the internal communication ports 203 on two sides of the calibration flow guiding structure 206 are the calibration internal communication ports.

Referring to fig. 2, at this time, three flow guiding structures are disposed in the flow channel groove 205 at intervals along the width direction, so that the inner space of the flow channel groove 205 is partitioned to form four M-stage flow channels 201, that is, a first M-stage flow channel 2011, a second M-stage flow channel 2012, a third M-stage flow channel 2013 and a fourth M-stage flow channel 2014.

Referring to fig. 7 and 8, at this time, four flow guiding structures are provided at intervals in the width direction at the notch of the flow channel groove 205 near one end of the mounting hole 3, thereby forming five M-stage flow channels 201 separately.

Thus, taking the M-level fluid flow channel 2 as the liquid inlet flow channel 21 as an example, the flow direction of the electrolyte flowing out of the M-1 level flow channel can be changed by the flow guiding function of the calibration flow guiding structure 206, so that the flow directions of the fluid at the positions of the at least two calibration inner communication ports are arranged in an included angle.

As shown in fig. 2, alternatively, both sides of the calibrated guide structure 206 are used to form a guiding inclined surface 2060, and the guiding inclined surface 2060 is inclined with respect to the normal line of the inner wall of the mounting hole 3 at the center point of the first main port 208.

The guide inclined surface 2060 is disposed obliquely with respect to a calibration plane SB (calibration plane SB is shown in fig. 8), wherein the first total opening 208 has a center point in the circumferential direction of the mounting hole 3, the calibration plane SB passes through the center point, and a normal to the calibration plane SB at the center point passing through the inner wall of the mounting hole 3 is perpendicular to a normal to the inner wall of the mounting hole 3 at the center point. At this time, the normal line is located on the calibration plane SB.

It should be noted that, the center point being located on the inner wall of the mounting hole 3 is generally understood as the geometric center of the first port 208, and when the flow channel groove 205 extends in the radial direction of the frame body 1 and the cross-sectional shape of the flow channel groove 205 is rectangular, the first port 208 has a calibration plane SB (calibration plane SB is shown in fig. 8), where the calibration plane SB is the symmetry plane of the flow channel groove 205, the normal line is located on the calibration plane SB, and the guide inclined plane 2060 is disposed obliquely to the calibration plane SB.

It should be noted that, the guiding inclined surface 2060 is formed on a side surface of the calibration guiding structure 206, as shown in fig. 2, and in some cases, two guiding inclined surfaces 2060 forming an angle with each other are formed on the same calibration guiding structure 206 along the width direction of the flow channel 205. As shown in fig. 8, in some cases, the calibration flow guiding structure 206 is a guiding inclined plate structure, where two sides of the guiding inclined plate structure are parallel to each other, and guiding inclined surfaces 2060 are formed on the sides of the guiding inclined plate structure.

In this way, taking the M-stage fluid flow channel 2 as the fluid inlet flow channel 21 as an example, the fluid is diffused to two sides of the flow channel groove 205 along the width direction by changing the fluid way through the guiding inclined plane 2060, so that the structure is simple and the practicability is strong.

Optionally, at least one runner groove 205 is correspondingly provided with a plurality of calibration diversion structures 206 distributed along the circumferential direction of the mounting hole 3;

wherein, along the direction away from the M-1 level flow channel, a plurality of guiding inclined planes 2060 formed by the calibration guiding structure 206 are distributed radially.

Specifically, the adjacent two guide slopes 2060 are disposed at an angle, and the distance between the two adjacent guide slopes 2060 at the end near the M-1 stage flow channel is smaller than the distance between the two at the end far from the M-1 stage flow channel.

At this time, when the M-stage fluid flow channel 2 is the fluid inlet flow channel 21, the fluid flow direction at each of the calibrated inner communication ports partitioned by the calibrated flow guiding structure 206 is radial and spread outwards from the center, so that the number and the inclination angle of the guiding inclined planes 2060 can be adjusted according to the actual requirement, and the electrolyte can be rapidly spread as required, and a better electrolyte flow equalizing effect can be obtained.

Optionally, one or more calibrated flow guiding structures 206 are provided on both sides of the normal along the circumference of the mounting hole 3.

At this time, it can be understood that one or more calibration flow guiding structures 206 are disposed on both sides of the calibration plane SB. The fluid may be guided by the calibration flow guiding structures 206 on both sides of the calibration plane SB, for example, the fluid may be guided to both sides of the calibration plane SB, so as to expand the coverage of the entire M-stage fluid flow channel 2.

As shown in fig. 8, alternatively, the indexing flow guide structure 206 includes a guide ramp structure, the sides of which are used to form a guide ramp 2060.

Thereby being convenient for calibrating the processing and forming of the diversion structure 206, and having simple structure and strong practicability.

Alternatively, on a projection along the thickness direction of the frame 1, the calibrated flow guiding structures 206 on both sides of the normal are symmetrically arranged with respect to the normal.

That is, the calibration flow guiding structures 206 on both sides of the calibration plane SB are symmetrically disposed with respect to the calibration plane SB. As shown in fig. 8, for example, four guide swash plate structures are shown by thick solid lines, namely, a first guide swash plate structure 2061, a second guide swash plate structure 2062, a third guide swash plate structure 2063, and a fourth guide swash plate structure 2064, wherein the first guide swash plate structure 2061 and the fourth guide swash plate structure 2064 are symmetrically disposed about the calibration plane SB and form an angle θ2 with the calibration plane SB, and the second guide swash plate structure 2062 and the third guide swash plate structure 2063 are symmetrically disposed about the calibration plane SB and form an angle θ1 with the calibration plane SB.

In this way, the corresponding total flow rate flowing through the M-stage fluid flow channel 2 can be distributed according to a predetermined ratio by the correspondingly formed plurality of calibration internal communication ports. The specific distribution mode is determined according to actual requirements, that is, the inclination angle of each guide inclined plate structure is determined according to specific requirements. Illustratively, θ1 is 20 °, θ2 is 35 °.

As shown in fig. 8, which shows that when the M-stage fluid flow channel 2 is the liquid inlet flow channel 21, the calibration plane SB passes through the center of the main pole plate 4; and passes through the mounting hole 3 at the lowest point of the electrolytic chamber formed on the side of the main pole plate 4.

At this time, the electrolyte is convenient to enter the inside of the electrolytic chamber, and the electrolyte is convenient to rapidly diffuse to the whole electrolytic chamber.

As shown in fig. 10, alternatively, at the adjacent end surfaces SA of the flow channel groove 205 and the M-1 stage flow channel, the cross-sectional area of the flow channel groove 205 is larger than the cross-sectional area of the corresponding M-1 stage flow channel, and the flow guiding structure is disposed at intervals from the M-1 stage flow channel along the flow direction of the fluid.

As shown in fig. 10, specifically, the flow channel groove 205 is a groove section extending along the circumferential direction of the mounting hole 3, for example, when the polar plate is circular, it is an arc-shaped groove, the inner end of which is communicated with the mounting hole 3, the outer end of which is communicated with the middle-stage flow channel 202, and a plurality of flow guiding structures (or separation structures) are provided in the flow channel groove 205 along the circumferential direction of the mounting hole 3, so that the flow channel groove 205 is separated to form a plurality of M-stage flow channels 201. The other intermediate stage flow channels 202 may be similarly configured and will not be described in detail herein.

In this way, the coverage of the M-stage flow path 201 can be increased without increasing the cross-sectional area of the M-1 stage flow path.

As shown in fig. 12, in a further alternative, the M-stage fluid flow channel 2 is a liquid inlet flow channel 21, the liquid inlet flow channel 21 is used for supplying electrolyte into the electrolysis chamber on one side of the main plate 4, the flow channel opening of the M-1 stage flow channel, which is close to one end of the M-stage flow channel, is a calibration flow channel opening 209, the M-stage fluid flow channel 2 is a liquid inlet flow channel 21, and the liquid inlet flow channel 21 is used for supplying electrolyte into the electrolysis chamber on one side of the main plate 4;

The flow guiding structure of the liquid inlet flow channel 21 comprises a first flow guiding structure 207, and the first flow guiding structure 207 is arranged opposite to the corresponding calibration flow channel port 209;

and/or, a plurality of flow guiding structures are disposed in the flow channel groove 205 of the liquid inlet flow channel 21, where the plurality of flow guiding structures are circumferentially distributed on one side or two sides of the standard flow channel opening 209 along the mounting hole 3, and are located in the flow guiding structures on the same side of the standard flow channel opening 209 along the circumferential direction of the mounting hole 3, at least a plurality of flow guiding structures satisfy a decreasing rule, where the decreasing rule includes that a first length corresponding to the flow guiding structure farther from the standard flow channel opening 209 is shorter, and the first length is a distance from one end of the flow guiding structure away from the inner wall of the mounting hole 3 to the inner wall of the mounting hole 3.

In fig. 11 and 12, the M-1 stage flow channels are intermediate stage flow channels 202, specifically, the second stage flow channels, and the first flow guiding structure 207 can change the flow direction of the fluid at the calibrated flow channel port 209 of the M-1 stage flow channels, so that the electrolyte diffuses to one side or two sides.

It should be understood that, when the M-1 stage flow channel has a plurality of flow guiding structures correspondingly distributed along two circumferential sides of the mounting hole 3, the first lengths of the plurality of flow guiding structures on one or both calibration sides of the two sides conform to the above-mentioned decreasing rule, which may be selected according to implementation requirements.

In the above embodiment, optionally, all the internal communication ports 203 include the second segment S12 located at least partially on the calibration contour segment S0 in the contour segment corresponding to the calibration line S.

As shown in fig. 3, in particular, the contour segments corresponding to the second M-stage flow path 2012, the third M-stage flow path 2013, or the fourth M-stage flow path 2014 on the calibration line S are all the second segments S12.

At this time, the contour section corresponding to all the internal communication ports 203 formed by the M-stage fluid flow channel 2 on the calibration line S is partially located on the calibration contour section S0 and partially located outside the calibration contour section S0, so that a larger coverage area (at least a portion of the range corresponding to the calibration contour section S0 may be covered, and at least a portion of the range outside the range corresponding to the calibration contour section S0 may be covered) of all the internal communication ports 203 of the M-stage fluid flow channel 2 may be obtained.

As shown in fig. 2 and 3, optionally, the length of the covering profile section S1 is greater than the length of the calibration profile section S0, and the covering profile section S1 includes a profile section corresponding to each internal communication port 203 on the calibration line S, and a connection profile section located on the calibration line S and used for connecting profile sections corresponding to adjacent internal communication ports 203.

The number of connection profile segments is the number of inner communication ports 203 minus one. As shown in fig. 3, at this time, the covering profile section S1 includes four communication ports and three connection profile sections.

Alternatively, the calibration profile section S0 falls completely on the covering profile section S1, and one or both ends of the covering profile section S1 exceed the calibration profile section S0.

As shown in fig. 2 and 3, it shows the case where m=2 of the liquid inlet flow channel 21, its corresponding calibration profile section S0 falls completely on the covering profile section S1, and only one end of the covering profile section S1 exceeds the calibration profile section S0.

As shown in fig. 6, m=2 of the inlet flow channel 21 is shown, the corresponding calibration contour segment S0 completely falls on the covering contour segment S1, and both ends of the covering contour segment S1 exceed the calibration contour segment S0.

As shown in fig. 9 and 10, it shows that m=3 of the outflow channel, where the intermediate stage channel 202 includes only the M-1 stage channel, that is, the second stage channel, and the corresponding two ends of the covering contour segment S1 exceed the calibration contour segment S0.

As shown in fig. 8, m=3 of the inlet flow channel 21 is shown, and the corresponding covering contour segment S1 and the calibration contour segment S0 do not overlap each other.

In this way, the positions of the inner communication ports 203 of the M-stage flow path 201 may be set as needed, for example, in the liquid inlet flow path 21, when the primary flow path 200 is higher than the bottommost end of the electrolysis chamber, one or more inner communication ports 203 may be set to a position lower than the primary flow path 200, and the fluid flow direction at one or more inner communication ports 203 may be set to be inclined toward the lower end.

As shown in fig. 12, in the above embodiment, alternatively, each stage of the M-stage fluid flow passage 2 between the M-stage flow passage 201 and the one-stage flow passage 200 is an intermediate stage flow passage 202, and the width of at least one of the one-stage or multi-stage intermediate stage flow passages 202 gradually decreases in the direction approaching the one-stage flow passage 200.

In fig. 12, the intermediate stage flow path 202 is a secondary flow path that is configured to be tapered to increase the coverage of an end of the secondary flow path away from the primary flow path 200 without increasing the cross-sectional area of the end of the secondary flow path near the primary flow path 200.

As shown in fig. 9, in the alternative of the M-stage fluid flow channel 2, the flow channel groove 205 includes a first groove segment 2051 disposed near the mounting hole 3 and a second groove segment 2052 disposed between the first groove segment 2051 and the corresponding M-1 stage fluid flow channel, the first groove segment 2051 communicates with the mounting hole 3 to form the first total port 208, the second groove segment 2052 communicates with the corresponding M-1 stage fluid flow channel to form the standard flow port 209, the first total port 208 and the standard flow port 209 do not overlap with each other at the profile segment corresponding to the standard line S, and the cross-sectional area of the second groove segment 2052 is larger than that of the first groove segment 2051.

In fig. 9, it should be understood that, in this case, the M-1 stage flow channel is a secondary flow channel, and the flow channel groove 205 is provided with a plurality of M-1 stage flow channels in form, but when the adjacent M-1 stage flow channels are all in communication with the second groove segment 2052 at the same position, the M-1 stage flow channels should be regarded as the same M-1 stage flow channel, and the isolation structure between the adjacent M-1 stage flow channels mainly plays a role of reinforcing support.

In this way, the restriction of the position of the inner communication port 203 can be reduced, and for example, at this time, the primary flow passage 200 can be provided at a position higher than the lowest end of the electrolytic chamber, and the inner communication port 203 can be laid out to the lowest end.

As shown in fig. 1, a further embodiment of the present utility model provides a pole plate comprising a main pole plate 4 and the pole frame of the above embodiment, the main pole plate 4 being disposed in the mounting hole 3 of the pole frame.

The partial structure of the polar plate has been described previously, and will not be described here again.

As shown in fig. 7 and 8, the main pole plate 4 is provided with a concave-convex structure 41, and the cross-sectional shape of the concave-convex structure 41 is circular or prismatic.

The cross-sectional shape of the concave-convex structure 41 is a circle, which is a sphere convex sphere, and the concave-convex structure 41 is a prism-like structure, which can be formed by using the related art.

Specifically, taking the scheme shown in fig. 8 as an example, the connection line of the acute angle vertexes of the prisms is arranged to extend in the up-down direction. The acute angle θ3 may be, for example, 30 °, 45 °, 60 °, or 75 °.

In this way, the flow equalization in the electrolytic chamber is performed while supporting the electrode and the diaphragm by the concave-convex structure 41, for example, and the flow equalization effect is good.

Yet another embodiment of the present utility model provides an electrolytic cell comprising the plate of the above embodiment. And will not be described in detail herein.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, descriptions of the terms "embodiment," "one embodiment," "some embodiments," "illustratively," and "one embodiment" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or implementation of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.

The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. As such, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims (16)

1. The pole frame is characterized by comprising a frame body (1), wherein the frame body (1) is provided with an M-level fluid flow channel (2) and a mounting hole (3) for accommodating a main pole plate (4);

in the M-stage fluid flow channel (2), the M-stage flow channel (201) is used for communicating with the inner wall of the mounting hole (3) at one side of the main polar plate (4) and forming an inner communication port (203), the first-stage flow channel (200) is used for communicating with the outside at a position outside the mounting hole (3) and forming an outer communication port (204), the number of the inner communication ports (203) is larger than that of the outer communication ports (204), M is more than or equal to 2, and M is an integer;

the internal connection port (203) comprises at least two calibration internal connection ports, at least two fluid flow directions at the positions of the calibration internal connection ports are arranged at an included angle, and/or all the internal connection ports (203) comprise first sections (S11) which are at least partially positioned outside a calibration outline section (S0) in outline sections corresponding to calibration lines (S) based on the mounting holes (3), the calibration lines (S) are outline lines formed by projection of the circumferential inner walls of the mounting holes (3) along the thickness direction of the frame body (1), and the calibration outline sections (S0) are outline sections corresponding to the first-stage flow channels (200) on the calibration lines (S).

2. The pole frame of claim 1, wherein a runner groove (205) and at least one flow guiding structure are arranged at one end, close to the mounting hole (3), of the M-stage fluid runner (2), the runner groove (205) is communicated with the mounting hole (3) and forms a first main port (208), the flow guiding structure is arranged at the first main port (208), and two sides of the flow guiding structure respectively form the M-stage runner (201).

3. The pole frame of claim 1, wherein when M = 2, at least two of the calibrated internal communication ports are respectively in communication with the same M-1 stage flow path through the corresponding M stage flow path (201);

when M is more than or equal to 3, at least two calibration inner communication ports are respectively communicated with the same M-1 level flow passage through corresponding M level flow passages (201), and/or at least two calibration inner communication ports are respectively communicated with different M-1 level flow passages through corresponding M level flow passages (201).

4. The pole frame of claim 2, wherein the flow guiding structure comprises at least one calibrated flow guiding structure (206); both sides of the calibration flow guiding structure (206) are used for forming a guide inclined plane (2060), and the guide inclined plane (2060) is obliquely arranged relative to the normal line of the inner wall of the mounting hole (3) at the central point of the first main port (208).

5. The pole frame according to claim 4, wherein the M-stage fluid flow channels (2) are correspondingly provided with a plurality of calibration flow guiding structures (206) distributed along the circumferential direction of the mounting hole (3);

wherein, along the direction far away from the M-1 level flow channel, a plurality of guide inclined planes (2060) formed by the calibration flow guide structure (206) are distributed radially; and/or, one or more calibration flow guide structures (206) are arranged on two sides of the normal along the circumferential direction of the mounting hole (3).

6. The pole frame of claim 5, wherein the nominal flow guiding structure (206) comprises a guiding sloping plate structure, the sides of which are used to form the guiding sloping surface (2060);

and/or, on the projection along the thickness direction of the frame body (1), the calibration flow guide structures (206) on two sides of the normal line are symmetrically arranged about the normal line.

7. The pole frame of claim 2, wherein the cross-sectional area of the runner groove (205) is larger than the corresponding cross-sectional area of the M-1 level runner at the adjacent end Surface (SA) of the M-1 level runner, and the flow guiding structure is spaced from the M-1 level runner along the flow direction of the fluid.

8. The pole frame of claim 7, wherein a flow passage opening of the M-1 stage flow passage near one end of the M stage flow passage (201) is a calibration flow passage opening (209), the M stage fluid flow passage (2) is a liquid inlet flow passage (21), and the liquid inlet flow passage (21) is used for supplying electrolyte into an electrolysis chamber at one side of the main pole plate (4);

the flow guiding structure of the liquid inlet flow channel (21) comprises a first flow guiding structure (207), and the first flow guiding structure (207) is arranged opposite to the corresponding calibration flow channel port (209);

and/or, be provided with a plurality of in runner groove (205) of feed liquor runner (21) guide structure, wherein, a plurality of guide structure is followed mounting hole (3) circumference distributes in one side or both sides of demarcation runner mouth (209), is located demarcation runner mouth (209) are followed mounting hole (3) circumference same side in the guide structure, at least a plurality of guide structure satisfies the rule of diminishing, the rule of diminishing includes that the distance is far away from demarcation runner mouth (209) guide structure corresponds the first length is shorter, the first length is the distance that one end that the guide structure kept away from mounting hole (3) inner wall reaches mounting hole (3) inner wall.

9. The pole frame of claim 7, wherein the runner slot (205) includes a first slot segment (2051) disposed proximate to the mounting hole (3) and a second slot segment (2052) disposed between the first slot segment (2051) and the corresponding M-1 level runner, the first slot segment (2051) being in communication with the mounting hole (3) to form the first manifold (208), the second slot segment (2052) being in communication with the corresponding M-1 level runner to form a nominal runner (209), the first manifold (208) and the nominal runner (209) being non-coincident with each other at a profile segment corresponding to the nominal line (S), a cross-sectional area of the second slot segment (2052) being greater than a cross-sectional area of the first slot segment (2051).

10. A pole frame according to any of the claims 1 to 5, 7-8, wherein all of the internal connection openings (203) comprise, in the profile sections corresponding to the calibration line (S), a second section (S12) at least partially located on the calibration profile section (S0);

and/or, the length of the covering contour section (S1) is greater than that of the calibration contour section (S0), the covering contour section (S1) comprises contour sections corresponding to the internal connection ports (203) on the calibration line (S), and connecting contour sections which are positioned on the calibration line (S) and are used for connecting the contour sections corresponding to the adjacent internal connection ports (203).

11. The pole frame of claim 10, wherein the calibration profile section (S0) falls completely on the cover profile section (S1), and one or both ends of the cover profile section (S1) protrude beyond the calibration profile section (S0).

12. The pole frame according to any one of claims 1 to 5, 7-9, wherein at least one side of the main pole plate (4) along the thickness direction in the mounting hole (3) is used for forming an electrolysis chamber, at least one liquid inlet flow channel (21) and/or at least one liquid outlet flow channel (22) are included in the M-stage fluid flow channel (2) corresponding to the electrolysis chamber arranged on the same side, the liquid inlet flow channel (21) is used for enabling electrolyte to flow into the corresponding electrolysis chamber, and the liquid outlet flow channel (22) is used for enabling electrolyte to flow out of the corresponding electrolysis chamber;

and/or the primary flow passage (200) is provided to penetrate the frame (1) to at least one side in the thickness direction and forms the outer communication port (204) at an end portion;

and/or, when M is more than or equal to 3, each stage of flow channel between the M stage of flow channel (201) and the first stage of flow channel (200) in the M stage of flow channel (2) is an intermediate stage of flow channel (202), and the width of at least one flow channel of one or more stages of intermediate stage of flow channels (202) gradually decreases along the direction close to the first stage of flow channel (200).

13. A pole plate, characterized by comprising a main pole plate (4) and a pole frame according to any one of claims 1 to 12, the main pole plate (4) being arranged in a mounting hole (3) of the pole frame.

14. The pole plate according to claim 13, characterized in that the main pole plate (4) is provided with a relief structure (41), the cross-sectional shape of the relief structure (41) being circular or prismatic.

15. The plate of claim 14 wherein the lines of sharp vertices of the prisms extend in an up-down direction.

16. An electrolysis cell comprising a plate according to any one of claims 13 to 15.