Electrochemical dechlorination device based on sponge buffering and area control
The sponge-buffered and regionally controlled electrochemical chloride removal system addresses evaporation and diffusion issues by ensuring tight contact and dynamic electrolyte management, enhancing retention and replenishment efficiency.
Patent Information
- Application Number
- CN202510461870.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2025-07-15
AI Technical Summary
The existing electrochemical chlorine removal technology faces the problems of easy evaporation of electrolytes, uncontrollable diffusion range and low repair accuracy in reinforced concrete structures, and it is difficult to effectively remove chloride ions inside the concrete.
The electrochemical chlorine removal device based on sponge buffering and area control is adopted. The sponge filling layer is closely attached to the concrete surface with the stainless steel anode mesh, and combined with the adjustable clamping component and the communicator principle, the dynamic regulation and accurate supplement of the electrolyte are achieved, ensuring the uniform distribution of the electrolyte in the repair area and the clear and controllable boundaries.
It significantly reduces the volatility of the electrolyte, improves the efficiency of the electrolyte replenishment and replacement, and improves the control accuracy of the repair area and the efficiency of the electrolyte use.
Smart Images
Figure CN120309384A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of electrochemical repair of reinforced concrete structures, and particularly relates to an external electrochemical chlorine removal device with electrolyte dynamic regulation and interface self-adaptive functions. Background Art
[0002] During the use of reinforced concrete, chloride ions will inevitably penetrate into the interior of the concrete structure and react chemically with the steel bars inside the concrete, causing corrosion, leading to the fracture of the steel bars, and further affecting the durability of the concrete structure. The problem of chloride ion erosion has become the focus of current research on concrete durability.
[0003] To address the problem of chloride ion erosion, traditional methods mainly include coating protection on the concrete surface, the use of corrosion inhibitors, surface plating treatment of steel bars, and physical protection barriers. However, these methods mainly focus on protection and are difficult to effectively remove the chloride ions that have penetrated into the interior of the concrete. In addition, chloride ions have a high degree of mobility. Even if local protection measures can temporarily inhibit the corrosion of steel bars, chloride ions may still induce new corrosion problems in other areas. Therefore, how to fundamentally remove chloride ions from the interior of the concrete is the key to solving this problem. As an innovative concrete repair method, the electrochemical chlorine removal technology realizes the effective removal of the penetrated chloride ions by applying an external electric field to migrate the chloride ions in the concrete to the concrete surface and collect them. However, despite the significant advantages of the electrochemical chlorine removal technology, it still faces problems such as easy evaporation of the electrolyte, frequent replenishment required, uncontrollable diffusion range of the electrolyte, and low repair accuracy during the actual application process. Summary of the Invention
[0004] In order to overcome the deficiencies of the existing technology, the invention provides an electrochemical chlorine removal device based on sponge buffering and area control, which can not only effectively regulate the repair area, significantly reduce the evaporation of the electrolyte, but also greatly improve the replenishment and replacement efficiency of the electrolyte.
[0005] The technical solution adopted by the invention to solve its technical problems is:
[0006] An electrochemical chlorine removal device based on sponge buffering and area control, comprising a main structure, an electrolyte storage structure, and a fixing structure. The main structure is located on the fixing structure, and the electrolyte storage structure is located on both sides of the main structure;
[0007] The main structure includes the top plate of the main part, the back plate of the main part, the first side plate of the main part, the second side plate of the main part, the bottom plate of the main part and the electrode. The top plate of the main part, the back plate of the main part, the first side plate of the main part, the second side plate of the main part and the bottom plate of the main part form a main container for accommodating the electrode, sponge and electrolyte. The open front of the main container places the electrode for close contact with the part to be repaired. The first side plate of the main part and the second side plate of the main part are provided with openings in the area near the bottom for connecting to the electrolyte storage structure, and the bottom plate is provided with an opening for discharging waste liquid.
[0008] The fixing structure is composed of a support part and an adjustable clamping part. The support part includes a transverse plate of the support part and a vertical plate of the support part. The transverse plate of the support part is fixed at the upper end of the vertical plate of the support part. The adjustable clamping part includes a clamp body, a bottom plate, a wing nut and a bolt. The bottom plate is connected to the transverse plate of the support part, and a fixing hole is provided on the bottom plate. One end of the bolt is fixed on the clamp body, and the other end of the bolt passes through the fixing hole and is connected to the wing nut. The tightness of the fixture is adjusted by the wing nut.
[0009] The electrolyte storage structure includes a top plate of the storage part, a first side plate of the storage part, a second side plate of the storage part, a third side plate of the storage part and a bottom plate of the storage part. The upper parts of the first side plate of the storage part, the second side plate of the storage part and the third side plate of the storage part are connected to the top plate of the storage part, and the lower parts of the first side plate of the storage part, the second side plate of the storage part and the third side plate of the storage part are connected to the bottom plate of the storage part to form the entire electrolyte container for storing electrolyte. The open part of the electrolyte container is attached to the main structure and communicated with the main container. The bottom plate of the storage part is provided with an opening for discharging waste liquid.
[0010] Further, in the main structure, the top plate of the main part adopts a pull-out design for convenient replacement of the sponge.
[0011] Preferably, small holes are provided on the top plate for discharging the gas generated by the electrochemical reaction to balance the internal and external pressures.
[0012] More preferably, the main structure further includes ribs. The ribs are pasted onto the back plate of the main part for clamping the sponge.
[0013] Preferably, the ribs adopt a raised structure arranged longitudinally at equal intervals.
[0014] The electrode is an anode mesh.
[0015] Still further, the adjustable clamping part further includes a gasket. The inner side of the clamp body is covered with a gasket to increase the friction force and protect the contact surface from damage at the same time.
[0016] Furthermore, in the electrolyte storage structure, through holes are provided in the side plates of the first storage part or the third storage part connected to the main body structure, and the through holes communicate with the openings in the areas near the bottom of the side plates of the first main body part and the second main body part.
[0017] The top plate of the storage part is made into a pull-out type, which is convenient for replenishing and replacing the electrolyte.
[0018] The technical concept of the present invention is as follows: Through the adjustable clamping assembly of the fixing structure, the whole device is anchored to the area to be repaired of the concrete. By rotating the wing nut to apply contact pressure, the stainless-steel anode mesh (electrode) is closely attached to the concrete surface through the elastic deformation of the sponge filling layer, and the unevenness of 3-5 mm on the surface is compensated. The inside of the main body structure is filled with sponge, and the stainless-steel mesh is used as the anode and is placed on the front side of the sponge in the main body structure and closely attached to the part to be repaired. Through holes are provided at the bottoms of the side plates of the first main body part and the second main body part, which communicate with the electrolyte storage structure (the open parts of the electrolyte containers on both sides are directly attached to the side plates of the first main body part and the second main body part), and the electrolyte can be replenished or injected through these through holes to ensure the dynamic balance of the electrolyte concentration inside the main body. Among them, the length and width of the open part (rectangular) of the electrolyte container can be appropriately smaller than the length and width of the side plate of the main body part, so as to facilitate the operation of the sealing between the main body part and the wall. During operation, by adjusting the liquid level height difference between the electrolyte storage structures on both sides, the liquid level height of the electrolyte inside the main body structure can be accurately controlled, so that the boundary of the treatment area is clearly controllable. When it is necessary to add electrolyte, the electrolyte storage structure can be directly pulled out or the top plate of the main body structure can be opened to replenish the electrolyte to the inside. When replacing the electrolyte or sponge, only need to open the drain hole on the bottom plate to drain the waste liquid, and directly take out the old sponge from the upper part of the main body structure and replace it with a new sponge.
[0019] The beneficial effects of the present invention are mainly manifested in that it can not only effectively regulate the repair area, significantly reduce the volatilization of the electrolyte, but also greatly improve the efficiency of replenishing and replacing the electrolyte. Description of the Drawings
[0020] Figure 1 is the front schematic diagram of the electrochemical dechlorination device based on sponge buffering and area control.
[0021] Figure 2 is the back schematic diagram of the electrochemical dechlorination device based on sponge buffering and area control.
[0022] Figure 3 is the schematic diagram of the fixing structure. Among them, (a) is the exploded view, and (b) is the assembled view.
[0023] Figure 4 is the schematic diagram of the main body structure.
[0024] Figure 5 It is a split view of the main structure.
[0025] Figure 6 It is a schematic diagram of the electrolyte storage structure. Among them, (a) is an exploded view, and (b) is an assembled view.
[0026] The reference numerals are: A - main structure, B - electrolyte storage structure, C - fixing structure, 1 - clamp body, 2 - gasket, 3 - bottom plate, 4 - wing nut, 5 - bolt, 6 - horizontal plate of the support part, 7 - vertical plate of the support part, 8 - top plate of the main body part, 9 - back plate of the main body part, 10 - first side plate of the main body part, 11 - second side plate of the main body part, 12 - bottom plate of the main body part, 13 - electrode, 14 - rib, 15 - top plate of the storage part, 16 - first side plate of the storage part, 17 - second side plate of the storage part, 18 - third side plate of the storage part, 19 - bottom plate of the storage part. Detailed implementation manners
[0027] The present invention will be further described below with reference to the accompanying drawings.
[0028] Referring to Figures 1 to 6 , an electrochemical dechlorination device based on sponge buffering and area control, comprising a main structure A, an electrolyte storage structure B, and a fixing structure C. The main structure A is located on the fixing structure C, and the electrolyte storage structure B is located on both sides of the main structure A;
[0029] The main structure A includes a top plate 8 of the main body part, a back plate 9 of the main body part, a first side plate 10 of the main body part, a second side plate 11 of the main body part, a bottom plate 12 of the main body part, an electrode 13, and a rib 14. The front of the main structure A adopts an open design to place the electrode 13 so as to be in close contact with the part to be repaired. The top plate 8 of the main body part, the back plate 9 of the main body part, the first side plate 10 of the main body part, the second side plate 11 of the main body part, and the bottom plate 12 of the main body part form a main body container for accommodating the electrode 13, sponge, and electrolyte. Among them, the first side plate 10 and the second side plate 11 of the main body part are provided with openings near the bottom area for communicating with the electrolyte storage part, and the bottom plate 12 is provided with an opening for discharging waste liquid. The top plate 8 of the main body part is designed to be pull-out type for convenient replacement of the sponge, and several small holes can be appropriately opened on the top plate for discharging the gas generated by the electrochemical reaction to balance the internal and external pressures. The rib 14 is pasted on the back plate 9 of the main body part, and the number can be pasted as required for clamping the sponge.
[0030] The fixed structure C consists of a support part and an adjustable clamping part. The support part includes a support part cross plate 6 and a support part vertical plate 7, and the support part cross plate 6 is fixed to the upper end of the support part vertical plate 7. The adjustable clamping part includes a clamp body 1, a gasket 2, a bottom plate 3, a wing nut 4, and a bolt 5. The bottom plate 3 is connected to the support part cross plate 6, and a fixing hole is provided on the bottom plate 3. One end of the bolt 5 is fixed to the clamp body 1, and the other end of the bolt 5 passes through the fixing hole and is connected to the wing nut 4. The tightness of the fixture is adjusted by the wing nut 4. One side of the clamp body 1 is covered with a gasket 2 to increase the friction force and protect the contact surface from damage at the same time.
[0031] The electrolyte storage structure B includes a storage part top plate 15, a first storage part side plate 16, a second storage part side plate 17, a third storage part side plate 18, and a storage part bottom plate 19. The upper parts of the first storage part side plate 16, the second storage part side plate 17, and the third storage part side plate 18 are connected to the storage part top plate 15, and the lower parts of the first storage part side plate 16, the second storage part side plate 17, and the third storage part side plate 18 are connected to the storage part bottom plate 19 to form the entire electrolyte container for storing electrolyte. The open part of the electrolyte container is directly attached to the first main part side plate 10 or the second main part side plate 11 of the main structure A. Among them, the storage part bottom plate 19 is provided with an opening for discharging waste liquid, and the storage part top plate 15 is made into a pull-out type for convenient replenishment and replacement of the electrolyte.
[0032] In this embodiment, the main structure A uses sponge as filling inside, so it saves the amount of electrolyte used compared with the device directly loaded with electrolyte, and further can reduce the overall mass of the device. The formula for the reduction amount of electrolyte is:
[0033] ΔQ = V×(1 - φ);
[0034] ΔQ: Reduction amount of electrolyte (unit: L or m 3 )
[0035] V: Sponge filling volume (unit is the same as ΔQ);
[0036] φ: Sponge porosity (for example, if the porosity is 85%, then φ = 0.85);
[0037] This device provides clamping pressure through the fixture, supports the use of thicker sponge for filling, and then compresses the sponge by relying on the fixture. Therefore, it can more effectively reduce the amount of electrolyte used.
[0038] In a traditional open liquid tank, the anode mesh is prone to displacement due to liquid flow or mechanical vibration, resulting in an increase in contact resistance or even local open circuit. In the present invention, the sponge is compressed and the anode mesh is firmly pressed against the concrete surface. At the same time, the flexible characteristics of the sponge can adapt to the unevenness of the concrete surface (a height difference of 3 - 5 mm can be compensated).
[0039] This embodiment uses the principle of communicating vessels, and through the carefully designed communicating holes between the storage structure and the main structure, precise control of the liquid level in the main structure is achieved. Specifically, when electrochemical dechlorination repair is required for a specific area, the operator can inject an appropriate amount of electrolyte into the storage structure. Due to the characteristics of the communicating vessel, the liquid levels in the storage structure and the main structure will remain at the same level. With the continuous injection of electrolyte, the liquid level in the main structure rises until it reaches the preset boundary of the repair area. The use of this method can avoid the problem of the electrolyte absorbed only by the capillary action of the sponge being deposited downward under the action of gravity, and the electrolyte storage structures on both sides can store a large amount of electrolyte, thereby reducing the problem of frequent replenishment of electrolyte.
[0040] The back plate ribs adopt a convex structure arranged at equal intervals in the longitudinal direction, forming a composite fixing system of "rigid positioning + flexible clamping" with the sponge filling layer; the longitudinal grooves formed by the ribs divide the sponge into independent unit blocks (the width of a single block is 100-150mm, which can be adjusted as needed). This design achieves two key goals: (1) Prevent lateral displacement of the sponge: Under vibration or tilt conditions, the lateral displacement of the sponge is ≤2mm. (2) Balanced pressure in each zone: The compression rate of the sponge in each block is controlled at 30%-40% to ensure uniform distribution of the electrolyte.
[0041] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the inventive concept and are for illustrative purposes only. The protection scope of the present invention should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the present invention also extends to equivalent technical means that can be thought of by ordinary technicians in this field based on the inventive concept.
Claims
1. An electrochemical chlorine removal device based on sponge buffering and area control, characterized in that, The device includes a main body structure, an electrolyte storage structure, and a fixing structure. The main body structure is located on the fixing structure, and the electrolyte storage structures are located on both sides of the main body structure. The main body structure includes a top plate of the main body part, a back plate of the main body part, a first side plate of the main body part, a second side plate of the main body part, a bottom plate of the main body part, and an electrode. The top plate of the main body part, the back plate of the main body part, the first side plate of the main body part, the second side plate of the main body part, and the bottom plate of the main body part form a main body container for accommodating the electrode, sponge, and electrolyte. The open front of the main body container places the electrode for close contact with the part to be repaired. Openings are provided in the first side plate of the main body part and the second side plate of the main body part near the bottom area to communicate with the electrolyte storage structure, and an opening is provided in the bottom plate for discharging waste liquid. The fixing structure consists of a support part and an adjustable clamping part. The support part includes a horizontal plate of the support part and a vertical plate of the support part. The horizontal plate of the support part is fixed to the upper end of the vertical plate of the support part. The adjustable clamping part includes a clamp body, a bottom plate, a wing nut, and a bolt. The bottom plate is connected to the horizontal plate of the support part, and fixing holes are provided on the bottom plate. One end of the bolt is fixed to the clamp body, and the other end of the bolt passes through the fixing hole and is connected to the wing nut. The tightness of the clamp is adjusted by the wing nut. The electrolyte storage structure includes a top plate of the storage part, a first side plate of the storage part, a second side plate of the storage part, a third side plate of the storage part, and a bottom plate of the storage part. The upper parts of the first side plate of the storage part, the second side plate of the storage part, and the third side plate of the storage part are connected to the top plate of the storage part, and the lower parts of the first side plate of the storage part, the second side plate of the storage part, and the third side plate of the storage part are connected to the bottom plate of the storage part to form the entire electrolyte container for storing electrolyte. The open part of the electrolyte container is directly attached to the main body structure and communicated with the main body container. An opening is provided in the bottom plate of the storage part for discharging waste liquid.
2. The electrochemical chlorine removal device based on sponge buffering and zone control according to claim 1, wherein, In the main body structure, the top plate of the main body part adopts a pull-out design.
3. An electrochemical chlorine removal device based on sponge buffering and zone control as claimed in claim 1 or 2, characterized in that, Small holes are opened on the top plate for discharging the gas generated by the electrochemical reaction.
4. The electrochemical chlorine removal device based on sponge buffering and zone control according to claim 1 or 2, characterized in that, The main body structure further includes ribs. The ribs are pasted to the back plate of the main body part for clamping the sponge.
5. The electrochemical chlorine removal device based on sponge buffering and zone control according to claim 4, characterized in that, The ribs adopt a convex structure arranged longitudinally at equal intervals.
6. The electrochemical chlorine removal device based on sponge buffering and zone control according to claim 1 or 2, wherein, The electrode is an anode mesh.
7. An electrochemical chlorine removal device based on sponge buffering and zone control as claimed in claim 1 or 2, characterized in that, The adjustable clamping part further includes a gasket, and the inner side of the clamp body is covered with the gasket.
8. An electrochemical chlorine removal device based on sponge buffering and zone control as claimed in claim 1 or 2, characterized in that, In the electrolyte storage structure, a through hole is opened in the first side plate of the storage part or the third side plate of the storage part connected to the main body structure, and the through hole is communicated with the openings in the first side plate of the main body part and the second side plate of the main body part near the bottom area.
9. The electrochemical chlorine removal device based on sponge buffering and zone control according to claim 1 or 2, characterized in that, The top plate of the storage part is made into a pull-out type.