Gas and air distribution device of absorption tower

Abstract

A gas and air distribution device of an absorption tower is suitable for being placed between an inlet of the absorption tower and a packing layer and comprises a supporting frame, a supporting beam and two flow uniformizing devices. The two ends of the supporting beam are arranged on the supporting frame through the two bearing bases, and the two flow uniformizing devices are arranged on the supporting beam and the supporting frame. The flow uniformizing device comprises more than two flow uniformizing plates which are adjacently arranged and fixing pieces; a fixing piece is arranged between every two adjacent flow uniformizing plates; the more than two uniform flow plates are mounted on the fixing piece; one ends of the more than two flow uniformizing plates are connected with the supporting beam, and the other ends of the more than two flow uniformizing plates are connected with the bearing seat of the supporting frame; the flow equalizing plate is provided with more than two flow equalizing holes, and by arranging the flow equalizing device, when flue gas from a flue passes through the flow equalizing device, the flow equalizing plate of the flow equalizing device uniformly distributes the flue gas, the flue gas enters a packing layer of an absorption tower after the gas speed is gentle, and then the flue gas and an absorbent are effectively dissolved and absorbed on the packing layer, so that efficient absorption is completed.

Description

Technical Field

[0001] The present application relates to the technical field of metal rolling, and in particular to an absorption tower air distribution device. Background Art

[0002] The existing oil mist recovery system mainly relies on a monomer absorption tower to absorb and decompose the oil mist. The absorption is completed by spraying the absorbent onto the packing layer and then dissolving the rolling oil in the flue gas into the absorbent. In actual applications, the flue gas is blown directly into the packing layer without pretreatment after entering the absorption tower from the flue. If the gas flow rate is too large, a large amount of flue gas can only gather at a certain point of the packing layer, resulting in uneven distribution of the flue gas on the packing layer, thereby reducing the effective contact area between the packing layer and the flue gas. The flue gas stays densely in some areas of the packing layer. Due to the excessive density of the flue gas in some areas of the packing layer, the packing layer absorbs the flue gas excessively, reducing its absorption capacity, while the flue gas in the rest of the packing layer is relatively scarce, and the absorption capacity of the packing layer cannot be fully utilized, which leads to low absorption efficiency and waste of packing costs.

[0003] Therefore, how to evenly distribute the smoke coming from the flue to the packing layer has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of this, the present application proposes an absorption tower air distribution device, which is suitable for evenly distributing the smoke coming from the flue to the packing layer.

[0005] According to one aspect of the present application, there is provided an absorption tower air distribution device, which is suitable for being placed between the inlet and the packing layer of the absorption tower, and comprises: a support frame, a support beam, and two flow-uniform devices;

[0006] The two ends of the support beam are arranged on the support frame through two bearing seats, and two flow equalizing devices are arranged on the support beam and the support frame;

[0007] The flow equalizer device comprises two or more adjacent flow equalizer plates and a fixing member; a fixing member is provided between every two adjacent flow equalizer plates; the two or more flow equalizer plates are mounted on the fixing member; one end of the two or more flow equalizer plates is connected to the support beam, and the other end of the two or more flow equalizer plates is connected to the bearing seat of the support frame;

[0008] The flow equalizing plate is provided with more than two flow equalizing holes.

[0009] In a possible implementation, the main structure of the support frame is a circular ring structure, and the support beam is located on a straight line where the diameter of the support frame is located.

[0010] In a possible implementation, a first connecting component is further included; the support beam and the flow plate are connected through the first connecting component.

[0011] In one possible implementation, the first connecting assembly includes a pressure plate and a first bolt; the flow plate is located between the pressure plate and the support beam, and the pressure plate is connected to the support beam through the first bolt, which is suitable for fixing the flow plate on the support beam.

[0012] In a possible implementation, a first nut is further included; the first nut is connected to the first bolt, and the first nut is located on a side of the pressure plate away from the flow equalizer plate.

[0013] In a possible implementation, a second connecting component is further included; the flow equalizer plate and the support frame are connected via the second connecting component.

[0014] In a possible implementation, the second connecting assembly includes a first clamping plate, a second clamping plate, and a second bolt;

[0015] The flow equalizer plate and the support frame are both located between the first clamping plate and the second clamping plate, and the second bolt passes through the first clamping plate, the flow equalizer plate and the second clamping plate in sequence to connect.

[0016] In a possible implementation, the fixing member includes two placement parts and a third connecting component; the cross-section of the placement part is an "L"-shaped structure, and the two placement parts are arranged opposite to each other and connected by the third connecting component.

[0017] In a possible implementation, more than two fixing members are disposed between each two adjacent flow equalizer plates, and the more than two fixing members are sequentially disposed along the length direction of the flow equalizer plates on both sides.

[0018] Beneficial effects of this application

[0019] By setting up a flow equalizer, when the flue gas coming from the flue passes through the flow equalizer, the flow equalizer plate of the flow equalizer will evenly distribute the flue gas. After the gas velocity slows down, it enters the packing layer of the absorption tower, and then effectively dissolves and absorbs the absorbent on the packing layer, thereby completing efficient absorption.

[0020] By providing the first connecting assembly, it is ensured that the connection between the flow equalizer plate and the support beam is firm and easy to install and disassemble, which helps to simplify the installation process and enhance the stability of the overall structure.

[0021] By setting up the second connecting component, the connection between the flow equalizer and the support frame is ensured to be firm and easy to install and disassemble. Compared with traditional installation and disassembly methods, this method reduces the required tools and time, achieves rapid disassembly and reinstallation, reduces the complexity of the operation, and improves installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 A schematic diagram showing the main structure of the absorption tower air distribution device according to an embodiment of the present application;

[0024] Figure 2 Show Figure 1 The cross-section along the middle D-D;

[0025] Figure 3 Show Figure 1 A-A sectional view;

[0026] Figure 4 A schematic diagram showing the structure of a fixing member according to an embodiment of the present application;

[0027] Figure 5 Show Figure 1 Sectional view along line C-C;

[0028] Figure 6 A top view of a support beam according to an embodiment of the present application is shown;

[0029] Figure 7 Show Figure 1 The enlarged view of the part in the middle dashed box;

[0030] Figure 8 Show Figure 1 A partial enlarged view of . DETAILED DESCRIPTION

[0031] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0032] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0035] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0036] Figure 1 A schematic diagram showing the main structure of the absorption tower air distribution device according to an embodiment of the present application; Figure 2 Show Figure 1 The cross-section along the middle D-D; Figure 3 Show Figure 1 A-A sectional view; Figure 4 A schematic diagram showing the structure of a fixing member according to an embodiment of the present application; Figure 5 Show Figure 1 Sectional view along line C-C; Figure 6 A top view of a support beam according to an embodiment of the present application is shown; Figure 7 Show Figure 1 The enlarged view of the part in the dotted box. Figure 8 Show Figure 1 A partial enlarged view of Figures 1 to 8As shown, the present application proposes an absorption tower air distribution device, which is suitable for being placed between the entrance of the absorption tower and the packing layer. The flue gas enters the absorption tower from the entrance of the absorption tower and then enters the packing layer after passing through the absorption tower air distribution device. It includes a support frame 110, a support beam 120, and two flow equalizers; both ends of the support beam 120 are arranged on the support frame 110 through two bearing seats 130, and the two flow equalizers are arranged on the support beam 120 and the support frame 110 and are respectively located on opposite sides of the support beam 120; the flow equalizer includes more than two adjacently arranged flow equalizer plates 100 and fixing parts 400, and a fixing part 400 is provided between each adjacent flow equalizer plate 100, and more than two flow equalizer plates 100 are installed on the fixing part 400, one end of more than two flow equalizer plates 100 is connected to the support beam 120, and the other end of more than two flow equalizer plates 100 is connected to the support frame 110, and the flow equalizer plate 100 has more than two flow equalizer holes.

[0037] It should be noted here that the support frame 110 and the two bearing seats 130 are fixedly arranged on the inner wall 111 of the absorption tower, and the two ends of the support beam 120 are arranged on the support frame 110 through the two bearing seats 130. The bearing seats 130 are suitable for providing support for the support beam 120 installed on the support frame 110. The support beam 120 is arranged on the support frame 110 through the bearing seats 130, and the support beam 120 and the support frame 110 are located on the same horizontal plane. The support beam 120 is suitable for evenly distributing the load to the bearing seats 130, thereby avoiding damage or deformation of the support frame 110 due to excessive single-point force. Two flow equalizing devices are installed on the support beam 120 and the support frame 110 and are respectively located on opposite sides of the support beam 120. The flow equalizing device is suitable for dispersing and balancing the flow of flue gas, thereby achieving uniform distribution of flue gas.

[0038] The flow equalizer device includes two or more adjacently arranged flow equalizer plates 100 and fixing parts 400. The flow equalizer plates 100 are suitable for evenly distributing the smoke coming from the flue. One end of the two or more flow equalizer plates 100 is connected to the support beam 120, and the other end of the two or more flow equalizer plates 100 is connected to the support frame 110. When the flow equalizer plates 100 are subjected to a force, the flow equalizer plates 100 can effectively disperse the force through the support beam 120 and the support frame 110, ensuring that the flow equalizer plates 100 can stably perform their functions. A fixing part 400 is provided between each adjacent uniform flow plate 100. The fixing part 400 is suitable for fixing the adjacent uniform flow plates 100 to prevent the uniform flow plates 100 from being displaced or tilted during installation or use, thereby ensuring that more than two uniform flow plates 100 are always maintained on the same horizontal plane. The uniform flow plate 100 is provided with more than two uniform flow holes, and the more than two uniform flow holes are arranged in an array, which can effectively disperse the flue gas into smaller flow beams, so that the flue gas can be evenly distributed when passing through the uniform flow plate 100, and enter the packing layer of the absorption tower after the gas velocity is smooth, and then effectively dissolve and absorb the absorbent on the packing layer, thereby completing efficient absorption. Each uniform flow plate 100 can be installed separately, which makes the installation process of the uniform flow plate 100 simpler and reduces the difficulty of repairing and replacing the uniform flow plate 100. By setting up a flow equalizer, when the flue gas coming from the flue passes through the flow equalizer, the flow equalizer plate 100 of the flow equalizer will evenly distribute the flue gas, and after the gas velocity slows down, it enters the packing layer of the absorption tower, and then effectively dissolves and absorbs the absorbent on the packing layer, thereby completing efficient absorption.

[0039] In one possible implementation, Figure 1 As shown, the main structure of the support frame 110 is a circular ring structure, the two ends of the support beam 120 are respectively connected to the bearing seat 130 and the support beam 120 is located on the straight line where the diameter of the support frame 110 is located. Figure 5 As shown, the side walls of the two bearing seats 130 are respectively attached to the absorption towers, and the other sides of the two bearing seats 130 are attached to the bottom side of the support frame 110. The support beam 120 and the support frame 110 are located on the same horizontal plane, so that when the two ends of the support beam 120 are connected to the bearing seats 130, both ends of the support beam 120 are attached to the inner wall of the support frame 110.

[0040] It should be noted here that the main structure of the support frame 110 is a circular ring structure. Due to the symmetry of the circular ring, the support frame 110 can evenly disperse the force, thereby ensuring the stability of the overall structure. The support beam 120 is arranged on the straight line where the diameter of the support frame 110 is located. The support beam 120 can effectively and evenly disperse the load to the support frames 110 on both sides. This design not only ensures the stability of the support beam 120 itself, but also reduces the force burden of the support frame 110.

[0041] In one possible implementation, Figure 5 , Figure 6 As shown, a fourth connection assembly 500 is also included, and the support beam 120 is connected to the bearing seat 130 through the fourth connection assembly 500. By providing the fourth connection assembly 500, it is ensured that the connection between the support beam 120 and the bearing seat 130 is firm and easy to install and disassemble, which helps to simplify the installation process and enhance the stability of the overall structure.

[0042] Further, such as Figure 5 , Figure 6 As shown, the fourth connecting assembly 500 includes a fourth screw and a fourth nut, the support beam 120 is a long plate-like structure, the support beam 120 is arranged on a straight line where the diameter of the support frame 110 is located, and the support beam 120 is provided with fourth mounting holes 121 at four corners near the bearing seat 130, and the fourth screw passes through the fourth mounting hole 121 on the support beam 120, the bearing seat 130 and the fourth nut in sequence, thereby fixing the support beam 120 on the bearing seat 130, ensuring the stability of the overall structure.

[0043] In a possible implementation, the two flow equalizers are fan-shaped, and the two flow equalizers are respectively arranged on both sides of the support beam 120, and the two flow equalizers are symmetrically arranged with the straight line where the support beam 120 is located as the axis. Each flow equalizer includes more than two flow equalizer plates 100, and the more than two flow equalizer plates 100 are arranged in sequence along the length direction of the support beam 120. Further, as Figure 1 As shown, each flow equalizer device is provided with eleven flow equalizer plates 100 , and the flow equalizer plates 100 of the two flow equalizer devices are also symmetrical to each other, one end of the eleven flow equalizer plates 100 is connected to the support beam 120 , and the other end of the eleven flow equalizer plates 100 is connected to the support frame 110 .

[0044] Further, such as Figure 1 , Figure 4 As shown, two or more fixing members 400 are arranged between each two adjacent uniform flow plates 100, and the two sides of the body length of each uniform flow plate 100 are placed on the fixing members 400 on both sides, and the two or more fixing members 400 are arranged in sequence along the body length direction of the uniform flow plates 100 on both sides, so that the uniform flow plates 100 can effectively disperse the pressure when subjected to pressure, and the fixing members 400 provide uniform supporting force, thereby ensuring the fixation of the relative positions between adjacent uniform flow plates 100, avoiding displacement of the uniform flow plates 100, thereby ensuring the stability of the overall structure, and avoiding the risk of deformation and damage of the uniform flow plates 100 due to uneven force.

[0045] In one possible implementation, Figure 4As shown, the fixing member 400 includes two placement portions 410 and a third connecting component 420 ; the cross-section of the two placement portions 410 is an “L”-shaped structure, and the two placement portions 410 are arranged opposite to each other and connected by the third connecting component 420 .

[0046] Furthermore, the two placement portions 410 are arranged opposite to each other and their openings are facing directions away from each other. The two placement portions 410 are suitable for providing stable support for the two flow equalizers 100 to ensure that the relative positions of the adjacent flow equalizers 100 are stable and unchanged. The flow equalizers 100 are placed in the openings of the placement portions 410 and the flow equalizers 100 are tightly fitted to the placement portions 410. The sides of the two placement portions 410 that are fitted to each other are connected by a third component 420. By setting the fixing member 400, the stability of the connection between the adjacent flow equalizers is enhanced, thereby ensuring the stability of the overall structure.

[0047] Furthermore, the third connecting component 420 is a third bolt and a third nut, and a third mounting hole is opened on one side of the placement parts 410 that are in contact with each other. The third mounting holes of the two placement parts 410 are coaxially arranged, and the third bolt passes through the third mounting holes on the two placement parts 410 in turn to be connected with the third nut. By tightening the third bolt and the third nut to provide sufficient clamping force, the placement parts 410 are ensured to be tightly connected. Under the limiting effect of the third connecting component 420 on the lower flow plate 100, the flow plate 100 is prevented from shifting or tilting due to force.

[0048] In a possible implementation, a first connection assembly 200 is further included; the support beam 120 is connected to the flow plate 100 via the first connection assembly 200. It should be noted that by providing the first connection assembly 200, the connection between the flow plate 100 and the support beam 120 is ensured to be firm and easy to install and disassemble, which helps to simplify the installation process and enhance the stability of the overall structure.

[0049] In one possible implementation, Figure 2 As shown, the first connecting assembly 200 includes a pressure plate 210 and a first bolt 220; the flow equalizer plate 100 is located between the pressure plate 210 and the support beam 120, and the first bolt 220 passes through the pressure plate 210 and the support beam 120 in sequence, so that the pressure plate 210 is connected to the support beam 120 through the first bolt 220 and the flow equalizer plate 100 is pressed. Since the support beam 120 is located on the diameter line of the support frame 110, the two flow equalizer devices are symmetrical with each other with the support beam 120 as the symmetry axis, so the flow equalizer plates 100 of the two flow equalizer devices are also symmetrical with each other.

[0050] It should be noted that the two flow equalizers 100 symmetrically connected to the support beam 120 as the symmetry axis are fixedly connected to the support beam through the same first connecting assembly 200. Figure 2As shown in the figure, the uniform flow plate 100 is located between the pressing plate 210 and the support beam 120. Two opposite uniform flow plates 100 are both arranged on the support beam 120. The main body of the pressing plate 210 is in a "冂" shape structure. The first bolt 220 passes through the pressing plate 210 and the support beam 120, and the first bolt 220 is located between the two symmetrically arranged uniform flow plates 100. The pressing plate 210 is suitable for pressing one end of the uniform flow plates 100 on both sides of the first bolt 220 against the support beam 120. The opening of the pressing plate 210 faces the side of the uniform flow plate 100. The pressing plate 210 is connected to the support beam 120 through the first bolt 220. By pressing down the pressing plate 210, the two symmetrically arranged uniform flow plates 100 are firmly fixed on the support beam 120, ensuring a reliable connection between the uniform flow plate 100 and the support beam 120 and being easy to install and disassemble.

[0051] Furthermore, the first connection assembly 200 further includes a first nut 230; the first nut 230 is connected to the first bolt 220. The first nut 230 is located on the side of the pressing plate 210 away from the uniform flow plate 100 and is suitable for locking the pressing plate 210. It should be noted here that the first nut 230 is located on the side of the pressing plate 210 away from the uniform flow plate 100. The first nut 230 can be screwed in and out on the first bolt 220 to adjust the pressing degree of the pressing plate 210 on the uniform flow plate 100, preventing the uniform flow plate 100 from loosening or moving, so as to ensure that the pressing plate 210 can stably press on the uniform flow plate 100.

[0052] Furthermore, as Figure 1 shown in the figure, a plurality of first connection assemblies 200 are provided on the support beam 120, so that one end of each uniform flow plate 100 arranged on the support beam 120 is fixedly connected to the support beam 120 through at least one first connection assembly 200, avoiding damage to the uniform flow plate 100 caused by excessive single-point force and ensuring a firm connection between the uniform flow plate 100 and the support beam 120.

[0053] In a possible implementation manner, it further includes a second connection assembly 300; the uniform flow plate 100 and the support frame 110 are connected through the second connection assembly 300. It should be noted here that by providing the second connection assembly 300, the connection between the uniform flow plate 100 and the support frame 110 is ensured to be reliable and easy to install and disassemble, which helps to simplify the installation process and can enhance the stability of the overall structure at the same time.

[0054] In a possible implementation manner, as Figure 3As shown, the second connecting assembly 300 includes a first clamp plate 310, a second clamp plate 320, a second bolt 330 and a second nut 340; the flow equalizer plate 100 and the support frame 110 are located between the first clamp plate 310 and the second clamp plate 320, the second bolt 330 passes through the first clamp plate 310 and the flow equalizer plate 100 in sequence and is connected to the second clamp plate 320, the second nut 340 is connected to the second bolt 330, and the second nut 340 is located on the side of the first clamp 310 away from the flow equalizer plate 100.

[0055] The second nut 340 can be screwed in and out of the second bolt 330 to apply pressure to the first clamp 310 and the second clamp 320 to prevent the first clamp 310 from moving away from the support frame 110.

[0056] Furthermore, at least one second connection assembly 300 is provided at the connection between each flow equalizer plate 100 and the support frame 110, and the second connection assemblies 300 are equidistantly distributed along the circumferential direction of the support frame 110, thereby ensuring a firm connection between the flow equalizer plate 100 and the support frame 110 and enhancing the stability of the overall structure.

[0057] In a possible implementation, a reinforcement part 140 is further included; the reinforcement part 140 is arranged at the connection between the inner wall 111 of the absorption tower and the support frame 110 and is located on both sides of the support frame 110. It should be noted here that the reinforcement part 140 is a welding layer, and the support frame 110 can be fixed to the inner wall 111 of the absorption tower by welding. Compared with other fixing methods, welding is easier to implement and control. By setting the reinforcement part 140, the support frame 110 can withstand a greater load, ensuring the durability of the overall structure of the support frame 110 and the inner wall 111 of the absorption tower.

[0058] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An absorption tower air distribution device, suitable for being placed between the inlet and the packing layer of the absorption tower, characterized in that: include: A support frame, a support beam and two flow-uniform devices; The two ends of the support beam are arranged on the support frame through two bearing seats, and the two flow equalizing devices are arranged on the support beam and the support frame; The flow equalizer device comprises two or more adjacently arranged flow equalizer plates and a fixing member; the fixing member is provided between every two adjacent flow equalizer plates; the two or more flow equalizer plates are mounted on the fixing member; one end of the two or more flow equalizer plates is connected to the support beam, and the other end of the two or more flow equalizer plates is connected to the support frame; The flow equalizing plate is provided with more than two flow equalizing holes.

2. The absorption tower air distribution device according to claim 1, characterized in that: The main structure of the support frame is a circular ring structure, and the support beam is located on a straight line where the diameter of the support frame is located.

3. The absorption tower air distribution device according to claim 2, characterized in that: Also included is a first connection component; The support beam is connected to the flow equalizer plate through the first connecting component.

4. The absorption tower air distribution device according to claim 3, characterized in that: The first connecting assembly includes a pressing plate and a first bolt; The flow equalizer is located between the pressure plate and the support beam. The pressure plate is connected to the support beam via the first bolt and is suitable for fixing the flow equalizer on the support beam.

5. The absorption tower air distribution device according to claim 4, characterized in that: Also includes a first nut; The first nut is connected to the first bolt, and the first nut is located on a side of the pressure plate away from the flow equalizer.

6. The absorption tower air distribution device according to claim 2, characterized in that: Also included is a second connection assembly; The flow equalizer plate and the support frame are connected via the second connecting assembly.

7. The absorption tower air distribution device according to claim 6, characterized in that: The second connecting assembly includes a first clamping plate, a second clamping plate and a second bolt; The flow equalizer plate and the support frame are both located between the first clamping plate and the second clamping plate, and the second bolt passes through the first clamping plate, the flow equalizer plate and the second clamping plate in sequence to connect.

8. The absorption tower air distribution device according to claim 2, characterized in that: The fixing member includes two placement parts and a third connecting component; The cross-section of the placement portion is in an "L"-shaped structure, and the two placement portions are arranged opposite to each other and connected by the third connecting component.

9. The absorption tower air distribution device according to claim 8, characterized in that: More than two fixing members are arranged between each two adjacent flow equalizer plates, and the more than two fixing members are arranged in sequence along the length direction of the flow equalizer plates on both sides.

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