A device and method for improving the performance of corroded steel pipes

Abstract

This invention relates to a device for improving the performance of corroded steel pipes, belonging to the field of corroded bent steel pipe reinforcement technology. It solves the problem in existing technologies that the structural stiffness is not improved in the early stages of corroded steel pipe reinforcement and cannot accurately adapt to the corroded areas. The invention includes a first sleeve component, a second sleeve component, and a third sleeve component, which together form a cylindrical space. The corroded steel pipe is placed within this cylindrical space. The first, second, and third sleeve components provide support and prestress to the corroded steel pipe. The slider of this invention can slide within a slotted hole and / or a cross-shaped hole. A hollow rod is connected to the slider, which can adjust the distance between the protective plate and the corroded steel pipe, provide prestress to the corroded steel pipe in the initial stage of fixation, and provide stable support to the corroded steel pipe in the later stage of fixation. It can also adjust the lateral position of the protective plate, thereby better adapting to the location of the corroded area.

Description

Technical Field

[0001] This invention relates to the field of reinforcement technology for rusted and bent steel pipes, and in particular to a device and method for improving the performance of rusted steel pipes. Background Technology

[0002] Current space grid structure member reinforcement primarily employs passive reinforcement. Considering site conditions, the inner diameter of the outer sleeve must be larger than the outer diameter of the inner compression member to ensure installation. However, due to the presence of gaps, in actual reinforcement processes, the outer sleeve only begins to bear the load after the reinforced member has undergone significant deformation.

[0003] The existing spatial grid structure rod sleeve reinforcement has the following disadvantages:

[0004] (1) The sleeve reinforcement method may not be able to effectively provide sufficient prestress in the early stage of fixing the rod, resulting in insufficient initial stability and stiffness of the rod after sleeve installation to meet the design requirements, or requiring a longer time to reach the ideal stable state.

[0005] (2) In actual engineering, there is a lot of corrosion on the spatial grid members. The existing sleeve reinforcement method only solves the problem of member bending, but does not consider the impact of corrosion on the structure. Therefore, it is impossible to further control the deformation of the members caused by corrosion.

[0006] (3) The casing reinforcement device lacks multi-directional deformation constraints and cannot provide sufficient rigidity. Especially when multiple lateral supports are required, the corroded steel pipe will still deform under load.

[0007] (4) The corrosion of the rod is random. Existing sleeve reinforcement methods are difficult to reinforce the steel pipes with random corrosion in all aspects, and the accuracy of locating the corrosion location is not high. Summary of the Invention

[0008] Based on the above analysis, the present invention aims to provide a device and method for improving the performance of corroded steel pipes, in order to solve the problem that the structural stiffness of existing corroded steel pipes is not improved in the early stage and cannot be accurately adapted to the corroded parts during reinforcement.

[0009] On one hand, the present invention provides a device for improving the performance of corroded steel pipes, including a first sleeve component, a second sleeve component and a third sleeve component. The first sleeve component, the second sleeve component and the third sleeve component are arranged to form a cylindrical space, and the corroded steel pipe is disposed in the cylindrical space. The first sleeve component, the second sleeve component and the third sleeve component can provide support force and prestress for the corroded steel pipe.

[0010] Furthermore, the first sleeve component includes a first arc-shaped plate and a first side plate, and two first side plates are provided, which are symmetrically arranged on both sides of the first arc-shaped plate.

[0011] Furthermore, the two ends of the first side plate are flush with the two ends of the first arc-shaped plate, and a plurality of first connecting holes are provided along the length direction of the first side plate.

[0012] Furthermore, the first sleeve component also includes a first protective plate, which is located inside the first arc-shaped plate.

[0013] Furthermore, the first sleeve component also includes a first hollow rod, one end of which passes through the first arc-shaped plate and connects to the first protective plate.

[0014] Furthermore, the distance between the first protective plate and the corroded steel pipe can be adjusted by the first hollow rod.

[0015] Furthermore, the first protective plate is used to fix the rusted area on the rusted steel pipe.

[0016] Furthermore, the second sleeve component includes a second arc-shaped plate, and the third sleeve component includes a third arc-shaped plate.

[0017] Furthermore, the first arc-shaped plate, the second arc-shaped plate, and the third arc-shaped plate are connected to form a complete sleeve.

[0018] On the other hand, the present invention provides a method for improving the performance of corroded steel pipes, which uses the above-mentioned corroded steel pipe performance improvement device to reinforce the corroded steel pipes.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] (1) The hollow rod of the present invention is connected to the protective plate. The distance between the protective plate and the corroded steel pipe is adjusted by the hollow rod, so that the prestress brought by the protective plate can be obtained in the initial stage of fixing the corroded steel pipe. Under the action of the hollow rod, the protective plate can apply lateral prestress to the corroded steel pipe, which effectively improves the rigidity of the corroded steel pipe in the initial stage of fixing. At the same time, the sleeve and the original pressure rod can work together without relying on further deformation of the rod, which improves the reinforcement efficiency and has a relatively simple structure.

[0021] (2) The present invention has a slotted hole and / or a cross hole on the arc plate, and a groove on the side wall of the slotted hole and / or the cross hole. The limiting post on the side wall of the slider cooperates with the groove, so that the slider can slide in the slotted hole and / or the cross hole. The hollow rod is threadedly engaged with the slider, which can adjust the distance between the protective plate and the rusted steel pipe, provide prestress for the rusted steel pipe in the early stage of fixing the rusted steel pipe, and provide stable support for the rusted steel pipe in the later stage of fixing the rusted steel pipe. It can also adjust the lateral position of the protective plate, so as to better adapt to the position of the rusted area.

[0022] (3) The support rod and the slider of the present invention are threadedly connected, and the end of the support rod directly abuts against the corroded steel pipe, which can provide stable multi-point lateral support for the corroded steel pipe and reduce or avoid deformation in the non-corroded area.

[0023] (4) By coarsely and finely adjusting the position of the protective plate, the present invention ensures that the protective plate is aligned with the rusted area, thereby ensuring accurate reinforcement of the rusted area and preventing further rusting and deformation.

[0024] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0025] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0026] Figure 1 This is a schematic diagram showing the positions of the lifting device (excluding the protective plate) and the corroded steel pipe in a specific embodiment.

[0027] Figure 2 This is a schematic diagram showing the connection between the lifting device and the corroded steel pipe in a specific embodiment;

[0028] Figure 3 This is a structural schematic diagram of the first sleeve component in a specific embodiment;

[0029] Figure 4 This is a schematic diagram showing the connection between the first protective plate, the first hollow rod, and the first slider in a specific embodiment.

[0030] Figure 5 This is a schematic diagram showing the connection between the first support rod, the second slider, and the cross hole in a specific embodiment.

[0031] Figure 6 This is a structural schematic diagram of the second sleeve component in a specific embodiment;

[0032] Figure 7 This is a schematic diagram showing the connection between the second protective plate, the second hollow rod, and the third slider in a specific embodiment.

[0033] Figure 8 This is a schematic diagram showing the connection between the second support rod, the fourth slider, and the cross hole in a specific embodiment.

[0034] Figure 9 This is a structural schematic diagram of the third sleeve component in a specific embodiment;

[0035] Figure 10 This is a schematic diagram showing the connection between the third protective plate, the third hollow rod, and the fifth slider in a specific embodiment.

[0036] Figure 11 This is a schematic diagram showing the connection between the third support rod, the sixth slider, and the cross hole in a specific embodiment.

[0037] Figure label:

[0038] 100 - First sleeve component; 101 - First arc-shaped plate; 102 - First side plate; 103 - First connecting hole; 104 - First protective plate; 105 - First hollow rod; 106 - First straight hole; 107 - First groove; 108 - First slider; 109 - First limiting post; 110 - First cross hole; 111 - Second groove; 112 - Second slider; 113 - Second limiting post; 114 - First through hole; 115 - First support rod;

[0039] 200 - Second sleeve component; 201 - Second arc-shaped plate; 202 - Second side plate; 203 - Second connecting hole; 204 - Second protective plate; 205 - Second hollow rod; 206 - Second straight hole; 207 - Third groove; 208 - Third slider; 209 - Third limiting post; 210 - Second cross hole; 211 - Fourth groove; 212 - Fourth slider; 213 - Fourth limiting post; 214 - Second through hole; 215 - Second support rod;

[0040] 300 - Third sleeve component; 301 - Third arc plate; 302 - Third side plate; 303 - Third connecting hole; 304 - Third protective plate; 305 - Third hollow rod; 306 - Third straight hole; 307 - Fifth groove; 308 - Fifth slider; 309 - Fifth limiting post; 310 - Third cross hole; 311 - Sixth groove; 312 - Sixth slider; 313 - Sixth limiting post; 314 - Third through hole; 315 - Third support rod;

[0041] 001 - Corroded steel pipe; 002 - Corroded area. Detailed Implementation

[0042] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0043] Example 1

[0044] A specific embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a device for improving the performance of a corroded steel pipe is disclosed, including a first sleeve component 100, a second sleeve component 200 and a third sleeve component 300. The first sleeve component 100, the second sleeve component 200 and the third sleeve component 300 are arranged to form a cylindrical space. The corroded steel pipe 001 is placed in the cylindrical space and is subjected to the supporting force and prestress provided by the first sleeve component 100, the second sleeve component 200 and the third sleeve component 300.

[0045] Figure 1 , Figure 2 and Figure 3 As shown, the first sleeve component 100 includes a first arc-shaped plate 101 and a first side plate 102. There are two first side plates 102. The two first side plates 102 are arranged along the length direction of the first arc-shaped plate 101 and are symmetrically arranged on both sides of the first arc-shaped plate 101. The length of the first side plate 102 is the same as the length of the first arc-shaped plate 101. The two ends of the first side plate 102 are flush with the two ends of the first arc-shaped plate 101.

[0046] In this embodiment, first side plates 102 are provided on both sides of the first arc plate 101 to facilitate the connection of the first arc plate 101 with other components. Understandably, the first side plate 102 is provided with first connecting holes 103. Multiple first connecting holes 103 are provided, and the multiple first connecting holes 103 are evenly distributed along the length direction of the first side plate 102.

[0047] It should be noted that the first arc-shaped plate 101 is a long straight strip with an annular cross-section. The cross-section refers to the surface perpendicular to the length direction of the first arc-shaped plate 101.

[0048] In order to specifically fix the rusted area 002 on the corroded steel pipe 001, and to prevent further corrosion and deformation of the rusted area 002, such as... Figure 4 As shown, the first sleeve component 100 also includes a first protective plate 104 and a first hollow rod 105. The first protective plate 104 is located inside the first arc-shaped plate 101. One end of the first hollow rod 105 passes through the first arc-shaped plate 101 and is connected to the first protective plate 104. The distance between the first protective plate 104 and the corroded steel pipe 001 can be adjusted through the first hollow rod 105.

[0049] It should be noted that, in this embodiment, the inner side refers to the side of the cylindrical space formed by the first sleeve component 100, the second sleeve component 200 and the third sleeve component 300, and the outer side refers to the outside of the cylindrical space.

[0050] In this embodiment, the distance between the first protective plate 104 and the corroded steel pipe 001 is adjusted by the first hollow rod 105, so that the prestress brought by the first protective plate 104 can be obtained in the initial stage of fixing the corroded steel pipe 001. Under the action of the first hollow rod 105, the first protective plate 104 can apply lateral prestress to the corroded steel pipe 001, which effectively improves the rigidity of the corroded steel pipe 001 in the initial stage of fixing. At the same time, this embodiment can achieve the coordinated work of the sleeve and the original pressure rod without relying on further deformation of the rod, which improves the reinforcement efficiency and has a relatively simple structure.

[0051] To facilitate the connection of the first hollow rod 105, such as Figure 1 , Figure 3 and Figure 4 As shown, the first arc-shaped plate 101 is provided with a first straight hole 106, and a first groove 107 is provided on the side wall of the first straight hole 106. The first sleeve component 100 also includes a first slider 108, and a first limiting post 109 is provided on two opposite side walls of the first slider 108. The first limiting post 109 cooperates with the first groove 107, so that the first slider 108 can slide within the first straight hole 106 to adjust the position of the first slider 108 within the first straight hole 106, thereby realizing the position of the first protective plate 104, so that the first protective plate 104 can better adapt to the rusted area 002 of the rusted steel pipe 001.

[0052] In order to adjust the distance between the first protective plate 104 and the rusted steel pipe 001, the first hollow rod 105 is provided with a thread in the middle and the first slider 108 is provided with a threaded hole. One end of the first hollow rod 105 passes through the threaded hole on the first slider 108 and is connected to the first protective plate 104. The first hollow rod 105 is threadedly connected to the first slider 108. By rotating the first hollow rod 105, the first protective plate 104 can be moved away from or closer to the rusted steel pipe 001.

[0053] In this embodiment, a first slotted hole 106 is provided on the first arc-shaped plate 101, and a first groove 107 is provided on the side wall of the first slotted hole 106. The first limiting post 109 on the side wall of the first slider 108 cooperates with the first groove 107, so that the first slider 108 can slide in the first slotted hole 106. The first hollow rod 105 is threadedly engaged with the first slider 108, which can adjust the distance between the first protective plate 104 and the rusted steel pipe 001, provide prestress to the rusted steel pipe 001 in the initial stage of fixing the rusted steel pipe 001, and provide stable support to the rusted steel pipe 001 in the later stage of fixing the rusted steel pipe 001. It can also adjust the lateral position of the first protective plate 104, so as to better adapt to the position of the rusted area 002.

[0054] Considering that there may be multiple rusted areas 002 on the rusted steel pipe 001, multiple first straight holes 106 are provided, and these multiple first straight holes 106 are arranged along the length direction of the first arc-shaped plate 101. The length direction of the first straight holes 106 is the same as the length direction of the first arc-shaped plate 101 and / or the length direction of the first straight holes 106 is perpendicular to the length direction of the first arc-shaped plate 101. When the length direction of the first straight holes 106 is the same as the length direction of the first arc-shaped plate 101, multiple rows of first straight holes 106 are arranged along the length direction of the first arc-shaped plate 101, and the first straight holes 106 in adjacent rows are aligned or staggered.

[0055] Furthermore, such as Figure 1 , Figure 3 and Figure 5 As shown, the first arc-shaped plate 101 is provided with a first cross hole 110, and the side wall of the first cross hole 110 is provided with a second groove 111. The first sleeve component 100 also includes a second slider 112, and the side wall of the second slider 112 is provided with a second limiting post 113. The second limiting post 113 cooperates with the second groove 111, so that the second slider 112 can slide within the first cross hole 110. The second slider 112 is provided with a screw hole, and the first hollow rod 105 can be threadedly engaged with the second slider 112 to adjust the distance between the first protective plate 104 and the corroded steel pipe 001. The first cross holes 110 are evenly distributed along the length direction of the first arc plate 101.

[0056] It is worth noting that the first arc-shaped plate 101 may be provided with a single first straight hole 106, a single first cross hole 110, or both the first straight hole 106 and the first cross hole 110 may coexist. When the first arc-shaped plate 101 is provided with both the first straight hole 106 and the first cross hole 110, the first straight hole 106 and the first cross hole 110 are staggered. Preferably, two first straight holes 106 are provided between two adjacent first cross holes 110, and the length direction of the two first straight holes 106 is the same as the length direction of the first arc-shaped plate 101. The first straight hole 106 and the first cross hole 110 are collectively referred to as the first through hole 114.

[0057] To further improve the fixing effect on the corroded steel pipe 001 and prevent deformation in other non-corroded areas, such as... Figure 5 As shown, the first sleeve component 100 also includes a first support rod 115, which is threadedly connected to the first slider 108 or the second slider 112. The end of the first support rod 115 directly abuts against the corroded steel pipe 001. The first support rod 115 can provide stable multi-point lateral support for the corroded steel pipe 001, reducing or avoiding deformation in the non-corroded area.

[0058] Similarly, such as Figure 1 , Figure 2 and Figure 6 As shown, the second sleeve component 200 includes a second arc-shaped plate 201 and a second side plate 202. There are two second side plates 202. The two second side plates 202 are arranged along the length direction of the second arc-shaped plate 201 and are symmetrically arranged on both sides of the second arc-shaped plate 201. The length of the second side plate 202 is the same as the length of the second arc-shaped plate 201. The two ends of the second side plate 202 are flush with the two ends of the second arc-shaped plate 201.

[0059] In this embodiment, second side plates 202 are provided on both sides of the second arc-shaped plate 201 to facilitate the connection of the second arc-shaped plate 201 with other components. Understandably, the second side plates 202 are provided with multiple second connecting holes 203, which are evenly distributed along the length of the second side plates 202. It should be noted that the second arc-shaped plate 201 is a long, straight strip with an annular cross-section; the cross-section refers to the surface perpendicular to the length of the second arc-shaped plate 201.

[0060] In order to specifically fix the rusted area 002 on the corroded steel pipe 001, and to prevent further corrosion and deformation of the rusted area 002, such as... Figure 7 As shown, the second sleeve component 200 also includes a second protective plate 204 and a second hollow rod 205. The second protective plate 204 is located inside the second arc-shaped plate 201. One end of the second hollow rod 205 passes through the second arc-shaped plate 201 and is connected to the second protective plate 204. The distance between the second protective plate 204 and the corroded steel pipe 001 can be adjusted through the second hollow rod 205.

[0061] In this embodiment, the distance between the second protective plate 204 and the corroded steel pipe 001 is adjusted by the second hollow rod 205, so that the prestress brought by the second protective plate 204 can be obtained in the initial stage of fixing the corroded steel pipe 001. Under the action of the second hollow rod 205, the second protective plate 204 can apply lateral prestress to the corroded steel pipe 001, which effectively improves the rigidity of the corroded steel pipe 001 in the initial stage of fixing. At the same time, this embodiment can achieve the coordinated work of the sleeve and the original pressure rod without relying on further deformation of the rod, which improves the reinforcement efficiency and has a relatively simple structure.

[0062] To facilitate the connection of the second hollow rod 205, such as Figure 1 , Figure 6 and Figure 7 As shown, the second arc-shaped plate 201 is provided with a second straight hole 206, and a third groove 207 is provided on the side wall of the second straight hole 206. The second sleeve component 200 also includes a third slider 208, and a third limiting post 209 is provided on two opposite side walls of the third slider 208. The third limiting post 209 cooperates with the third groove 207, so that the third slider 208 can slide within the second straight hole 206 to adjust the position of the third slider 208 within the second straight hole 206, thereby realizing the position of the second protective plate 204, so that the second protective plate 204 can better adapt to the rusted area 002 of the rusted steel pipe 001.

[0063] In order to adjust the distance between the second protective plate 204 and the corroded steel pipe 001, the second hollow rod 205 is provided with a thread in the middle, and the third slider 208 is provided with a threaded hole. One end of the second hollow rod 205 passes through the threaded hole on the third slider 208 and is connected to the second protective plate 204. The second hollow rod 205 and the third slider 208 are threadedly connected. By rotating the second hollow rod 205, the second protective plate 204 can be moved away from or closer to the corroded steel pipe 001.

[0064] In this embodiment, a second slotted hole 206 is provided on the second arc-shaped plate 201, and a third groove 207 is provided on the side wall of the second slotted hole 206. The third limiting post 209 on the side wall of the third slider 208 cooperates with the third groove 207, so that the third slider 208 can slide in the second slotted hole 206. The second hollow rod 205 is threadedly engaged with the third slider 208, which can adjust the distance between the second protective plate 204 and the rusted steel pipe 001, provide prestress to the rusted steel pipe 001 in the initial stage of fixing the rusted steel pipe 001, and provide stable support to the rusted steel pipe 001 in the later stage of fixing the rusted steel pipe 001. It can also adjust the lateral position of the second protective plate 204, so as to better adapt to the position of the rusted area 002.

[0065] Considering that there may be multiple rusted areas 002 on the corroded steel pipe 001, multiple second straight holes 206 are provided, arranged along the length direction of the second arc-shaped plate 201. The length direction of the second straight holes 206 is the same as the length direction of the second arc-shaped plate 201 and / or perpendicular to the length direction of the second arc-shaped plate 201. When the length direction of the second straight holes 206 is the same as the length direction of the second arc-shaped plate 201, multiple rows of second straight holes 206 are arranged along the length direction of the second arc-shaped plate 201, with adjacent rows of second straight holes 206 aligned or staggered.

[0066] Furthermore, such as Figure 1 , Figure 6 and Figure 8 As shown, the second arc-shaped plate 201 has a second cross hole 210, and the side wall of the second cross hole 210 has a fourth groove 211. The second sleeve component 200 also includes a fourth slider 212, and the side wall of the fourth slider 212 has a fourth limiting post 213. The fourth limiting post 213 cooperates with the fourth groove 211, allowing the fourth slider 212 to slide within the second cross hole 210. The fourth slider 212 has a threaded hole, and the second hollow rod 205 can be threadedly engaged with the fourth slider 212 to adjust the distance between the second protective plate 204 and the corroded steel pipe 001. The second cross holes 210 are evenly distributed along the length of the second arc-shaped plate 201.

[0067] It is worth noting that the second arc-shaped plate 201 may be provided with a second straight hole 206 alone, or a second cross hole 210 alone, or the second straight hole 206 and the second cross hole 210 may coexist. When the second arc-shaped plate 201 is provided with both the second straight hole 206 and the second cross hole 210, the second straight hole 206 and the second cross hole 210 are staggered. Preferably, two second straight holes 206 are provided between two adjacent second cross holes 210, and the length direction of the two second straight holes 206 is the same as the length direction of the second arc-shaped plate 201. The second straight hole 206 and the second cross hole 210 are collectively referred to as the second through hole 214.

[0068] To further improve the fixing effect on the corroded steel pipe 001 and prevent deformation in other non-corroded areas, such as... Figure 1 , Figure 2 and Figure 8 As shown, the first sleeve component 100 also includes a second support rod 215, which is threadedly connected to a third slider 208 or a fourth slider 212. The end of the second support rod 215 directly abuts against the corroded steel pipe 001. The second support rod 215 can provide stable multi-point lateral support for the corroded steel pipe 001, reducing or avoiding deformation in the non-corroded area.

[0069] like Figure 1, Figure 2 and Figure 9 As shown, the third sleeve component 300 includes a third arc-shaped plate 301 and a third side plate 302. There are two third side plates 302. The two third side plates 302 are arranged along the length direction of the third arc-shaped plate 301 and are symmetrically arranged on both sides of the third arc-shaped plate 301. The length of the third side plate 302 is the same as the length of the third arc-shaped plate 301. The two ends of the third side plate 302 are flush with the two ends of the third arc-shaped plate 301.

[0070] In this embodiment, third side plates 302 are provided on both sides of the third arc-shaped plate 301 to facilitate the connection of the third arc-shaped plate 301 with other components. Understandably, the third side plates 302 are provided with third connecting holes 303, and multiple third connecting holes 303 are provided, evenly distributed along the length direction of the third side plates 302. It should be noted that the third arc-shaped plate 301 is a long straight strip with an annular cross-section, where the cross-section refers to the surface perpendicular to the length direction of the third arc-shaped plate 301. The first arc-shaped plate 101, the second arc-shaped plate 201, and the third arc-shaped plate 301 are connected together by bolts passing through the first connecting hole 103, the second connecting hole 203, and the third connecting hole 303 and connected to nuts. After connection, the first arc-shaped plate 101, the second arc-shaped plate 201, and the third arc-shaped plate 301 form a complete sleeve. Preferably, the first arc-shaped plate 101, the second arc-shaped plate 201, and the third arc-shaped plate 301 are formed by dividing the complete sleeve into three segments.

[0071] In order to specifically fix the rusted area 002 on the corroded steel pipe 001, and to prevent further corrosion and deformation of the rusted area 002, such as... Figure 10 As shown, the third sleeve component 300 also includes a third protective plate 304 and a third hollow rod 305. The third protective plate 304 is located inside the third arc plate 301. One end of the third hollow rod 305 passes through the third arc plate 301 and is connected to the third protective plate 304. The distance between the third protective plate 304 and the corroded steel pipe 001 can be adjusted through the third hollow rod 305.

[0072] In this embodiment, the distance between the third protective plate 304 and the corroded steel pipe 001 is adjusted by the third hollow rod 305, so that the prestress brought by the third protective plate 304 can be obtained in the initial stage of fixing the corroded steel pipe 001. Under the action of the third hollow rod 305, the third protective plate 304 can apply lateral prestress to the corroded steel pipe 001, which effectively improves the rigidity of the corroded steel pipe 001 in the initial stage of fixing. At the same time, this embodiment can achieve the coordinated work of the sleeve and the original pressure rod without relying on further deformation of the rod, which improves the reinforcement efficiency and has a relatively simple structure.

[0073] To accommodate the connection of the third hollow rod 305, such as Figure 1 and Figure 9 As shown, the third arc-shaped plate 301 is provided with a third straight hole 306, and a fifth groove 307 is provided on the side wall of the third straight hole 306. The third sleeve component 300 also includes a fifth slider 308, and a fifth limiting post 309 is provided on two opposite side walls of the fifth slider 308. The fifth limiting post 309 cooperates with the fifth groove 307, so that the fifth slider 308 can slide within the third straight hole 306 to adjust the position of the fifth slider 308 within the third straight hole 306, thereby realizing the position of the third protective plate 304, so that the third protective plate 304 can better adapt to the rusted area 002 of the rusted steel pipe 001.

[0074] In order to adjust the distance between the third protective plate 304 and the corroded steel pipe 001, the third hollow rod 305 is provided with a thread in the middle, and the fifth slider 308 is provided with a threaded hole. One end of the third hollow rod 305 passes through the threaded hole on the fifth slider 308 and is connected to the third protective plate 304. The third hollow rod 305 and the fifth slider 308 are threadedly connected. By rotating the third hollow rod 305, the third protective plate 304 can be moved away from or closer to the corroded steel pipe 001.

[0075] In this embodiment, a third slotted hole 306 is provided on the third arc-shaped plate 301, and a fifth groove 307 is provided on the side wall of the third slotted hole 306. The fifth limiting post 309 on the side wall of the fifth slider 308 cooperates with the fifth groove 307, so that the fifth slider 308 can slide in the third slotted hole 306. The third hollow rod 305 is threadedly engaged with the fifth slider 308, which can adjust the distance between the third protective plate 304 and the rusted steel pipe 001, provide prestress to the rusted steel pipe 001 in the initial stage of fixing the rusted steel pipe 001, and provide stable support to the rusted steel pipe 001 in the later stage of fixing the rusted steel pipe 001. It can also adjust the lateral position of the third protective plate 304, so as to better adapt to the position of the rusted area 002.

[0076] Considering that there may be multiple rusted areas 002 on the corroded steel pipe 001, multiple third straight holes 306 are provided, and these multiple third straight holes 306 are arranged along the length direction of the third arc-shaped plate 301. The length direction of the third straight holes 306 is the same as the length direction of the third arc-shaped plate 301 and / or perpendicular to the length direction of the third arc-shaped plate 301. When the length direction of the third straight holes 306 is the same as the length direction of the third arc-shaped plate 301, multiple rows of third straight holes 306 are arranged along the length direction of the third arc-shaped plate 301, and adjacent rows of third straight holes 306 are aligned or staggered.

[0077] Furthermore, such as Figure 9 and Figure 11As shown, the third arc-shaped plate 301 has a third cross hole 310, and the side wall of the third cross hole 310 has a sixth groove 311. The third sleeve component 300 also includes a sixth slider 312, and the side wall of the sixth slider 312 has a sixth limiting post 313. The sixth limiting post 313 cooperates with the sixth groove 311, allowing the sixth slider 312 to slide within the third cross hole 310. The sixth slider 312 has a screw hole, and the third hollow rod 305 can be threaded into the sixth slider 312 to adjust the distance between the third protective plate 304 and the corroded steel pipe 001. The third cross holes 310 are evenly distributed along the length of the third arc plate 301.

[0078] It is worth noting that the third arc-shaped plate 301 may be provided with a third straight hole 306 alone, or a third cross hole 310 alone, or both the third straight hole 306 and the third cross hole 310 may coexist. When the third arc-shaped plate 301 is provided with both the third straight hole 306 and the third cross hole 310, the third straight hole 306 and the third cross hole 310 are staggered. Preferably, two third straight holes 306 are provided between two adjacent third cross holes 310, and the length direction of the two third straight holes 306 is the same as the length direction of the third arc-shaped plate 301. The third straight hole 306 and the third cross hole 310 are collectively referred to as the third through hole 314.

[0079] To further improve the fixing effect on the corroded steel pipe 001 and prevent deformation in other non-corroded areas, such as... Figure 11 As shown, the third sleeve component 300 also includes a third support rod 315, which can be threadedly connected to the fifth slider 308 or the sixth slider 312. The end of the third support rod 315 directly abuts against the corroded steel pipe 001. The third support rod 315 can provide stable multi-point lateral support for the corroded steel pipe 001, reducing or avoiding deformation in the non-corroded area.

[0080] Preferably, in order to simplify the process and improve production efficiency, the first sleeve component 100, the second sleeve component 200 and the third sleeve component 300 have the same structure.

[0081] Example 2

[0082] Another specific embodiment of the present invention discloses a device for improving the performance of corroded steel pipes. The difference from Embodiment 1 is that elastic contact portions are provided at the contact ends of the first support rod 115, the second support rod 215, and the third support rod 315 with the corroded steel pipe 001. Each elastic contact portion includes an elastic element and an arc-shaped pressure plate. One end of the elastic element is connected to the end of the first support rod 115, the second support rod 215, and the third support rod 315 (the end has a hole to allow the elastic element to rotate within the hole), and the other end is connected to the arc-shaped pressure plate. The arc-shaped pressure plate is used to contact the corroded steel pipe 001. Due to the large curvature of the arc-shaped pressure plate, it makes surface contact with the corroded steel pipe 001, avoiding damage caused by direct point-to-point or point-line contact between the ends of the first support rod 115, the second support rod 215, and the third support rod 315 and the corroded steel pipe 001. Simultaneously, the elastic element, when fully compressed, provides stable support for the corroded steel pipe 001. Preferably, the elastic element is a spring. Other structures and beneficial effects are the same as in Example 1, and will not be repeated here.

[0083] Example 3

[0084] Another specific embodiment of the present invention, such as Figures 1-11 As shown, a method for improving the performance of corroded steel pipes is disclosed, using the performance improvement device for corroded steel pipes of Example 1 or Example 2, the steps of which include:

[0085] Step 1: Connect the protective plate and the hollow rod according to the location and area of ​​the rusted area 002.

[0086] Specifically, since the rusted area 002 may be located near a slotted hole (first slotted hole 106, second slotted hole 206, third slotted hole 306) or a cross-shaped hole (first cross-shaped hole 110, second cross-shaped hole 210, and third cross-shaped hole 310), the first hollow rod 105 is connected to the first slider 108 or the second slider 112, the second hollow rod 205 is connected to the third slider 208 or the fourth slider 212, and the third hollow rod 305 is connected to the fifth slider 308 or the sixth slider 312. The first protective plate 104 is connected to the first hollow rod 105, and / or the second protective plate 204 is connected to the second hollow rod 205, and / or the third protective plate 304 is connected to the third hollow rod 305.

[0087] Step 2: Connect the first arc-shaped plate 101, the second arc-shaped plate 201, and the third arc-shaped plate 301 to form a sleeve, and enclose the corroded steel pipe 001 within the sleeve space formed by the three. Specifically, the first arc-shaped plate 101, the second arc-shaped plate 201, and the third arc-shaped plate 301 are connected by bolts and nuts.

[0088] Step 3: Roughly adjust the position of the protective plate.

[0089] Specifically, based on the position of the rusted area 002, the first arc plate 101, the second arc plate 201, and the third arc plate 301 of the sleeve are rotated so that the first protective plate 104, the second protective plate 204, and / or the third protective plate 304 are roughly aligned with the rusted area 002.

[0090] Step 4: Fine-tune the position of the protective plate.

[0091] Specifically, by holding the hollow rod (first hollow rod 105, second hollow rod 205, or third hollow rod 305), the first slider 108, the third slider 208, and / or the fifth slider 308 are slid within the slotted or cross-shaped hole to adjust the position of the first protective plate 104, the second protective plate 204, and / or the third protective plate 304, so that the position of the first protective plate 104, the second protective plate 204, and / or the third protective plate 304 is directly opposite the rusted area 002, ensuring that the rusted area 002 of the rusted steel pipe 001 is accurately reinforced.

[0092] Step 5: Seal the rusted area 002.

[0093] Specifically, a foam seal is bonded to the bottom edge of the protective plate. Preferably, the foam seal has a cross-sectional width of 5mm and a height of 1-2mm. Rotating the hollow rod causes the foam seal at the bottom of the protective plate to make sealed contact with the rusted steel pipe 001, sealing the rusted area 002. The foam seal can conform to the outer wall of the rusted steel pipe 001 to form a sealed area, which facilitates subsequent glue injection.

[0094] Step 6: Inject structural adhesive. Inject high-flow structural adhesive into the cavity between the protective plate and the corroded steel pipe 001 through the hollow rod to reinforce the corroded area 002 and prevent further corrosion and deformation of the corroded steel pipe 001.

[0095] Step 7: The support rod abuts against the rusted steel pipe 001.

[0096] Specifically, for non-corroded areas, the support rods (first support rod 115, second support rod 215, and third support rod 315) are connected to the slider, and the front ends of the support rods abut against the corroded steel pipe 001, forming a stable multi-point support. This allows prestress to be obtained in the initial stage of fixing the corroded steel pipe 001, realizing the coordinated work of the sleeve and the original pressure rod, and effectively improving the stiffness of the corroded steel pipe 001 in the initial stage of fixing.

[0097] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for improving the performance of corroded steel pipes, characterized in that, It includes a first sleeve component, a second sleeve component, and a third sleeve component with the same structure. The first sleeve component, the second sleeve component, and the third sleeve component are arranged to form a cylindrical space. The corroded steel pipe is placed in the cylindrical space. The first sleeve component, the second sleeve component, and the third sleeve component can provide support and prestress for the corroded steel pipe. The first sleeve component includes a first arc-shaped plate, a first protective plate, a first hollow rod, a first slider, and a second slider. The first protective plate is located inside the first arc-shaped plate. One end of the first hollow rod passes through the first arc-shaped plate and connects to the first protective plate. The first hollow rod allows adjustment of the distance between the first protective plate and the corroded steel pipe, enabling the first protective plate to provide prestress during the initial fixing of the corroded steel pipe. The first arc-shaped plate has a first straight hole and a first cross hole. The side wall of the first straight hole has a first groove. The two opposite side walls of the first slider have first limiting posts that cooperate with the first groove, allowing the first slider to slide within the first straight hole. The side wall of the first cross hole has a second groove. The side wall of the second slider has a second limiting post that cooperates with the second groove, allowing the second slider to slide within the first cross hole.

2. The performance improvement device for rusted steel pipes according to claim 1, characterized in that, The first sleeve component also includes a first side plate, and there are two first side plates, which are symmetrically arranged on both sides of the first arc-shaped plate.

3. The performance improvement device for rusted steel pipes according to claim 2, characterized in that, The two ends of the first side plate are flush with the two ends of the first arc-shaped plate, and a plurality of first connecting holes are provided along the length of the first side plate.

4. The performance improvement device for rusted steel pipes according to claim 1, characterized in that, The first protective plate is used to fix the rusted area on the rusted steel pipe.

5. The performance improvement device for rusted steel pipes according to claim 2, characterized in that, The second sleeve component includes a second arc-shaped plate, and the third sleeve component includes a third arc-shaped plate.

6. The performance improvement device for rusted steel pipes according to claim 5, characterized in that, The first arc-shaped plate, the second arc-shaped plate, and the third arc-shaped plate are connected to form a complete sleeve.

7. A method for improving the performance of a corroded steel pipe, wherein the corroded steel pipe is reinforced using the corroded steel pipe performance improvement device as described in any one of claims 1-6.

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