Device and method for improving performance of rusted steel pipe

Abstract

The invention relates to a device for improving the performance of a rusted steel pipe, belongs to the technical field of reinforcement of rusted bent steel pipes, and solves the problems that in the prior art, the rigidity of a structure is not improved in the early stage when the rusted steel pipe is reinforced, and a rusted part cannot be accurately adapted. The device comprises a first casing pipe component, a second casing pipe component and a third casing pipe component, a cylindrical space is defined by the first casing pipe component, the second casing pipe component and the third casing pipe component, and a rusted steel pipe is arranged in the cylindrical space. The first sleeve component, the second sleeve component and the third sleeve component can provide supporting force and prestress for the rusted steel pipe. The sliding block can slide in the linear hole and / or the cross-shaped hole, the hollow rod is connected with the sliding block, the distance between the protection plate and the rusted steel pipe can be adjusted, prestress is provided for the rusted steel pipe in the initial fixing period of the rusted steel pipe, stable supporting is provided for the rusted steel pipe in the later fixing period of the rusted steel pipe, and the lateral position of the protection plate can be adjusted; therefore, the device can better adapt to the position of a rusted area.

Description

Technical Field

[0001] The invention relates to the technical field of corroded bent steel pipe reinforcement, and in particular to a device and method for improving the performance of corroded steel pipes. Background Art

[0002] The current reinforcement of space grid structure rods with sleeves is mainly based on passive reinforcement. Considering the construction site conditions, the inner diameter of the outer sleeve needs to be larger than the outer diameter of the inner pressure rod to ensure installation. However, due to the existence of the gap, in the actual reinforcement process, the outer sleeve can only participate in the load-bearing after the reinforced rod has undergone a large deformation.

[0003] The existing space 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 initial stage of member fixation, resulting in the initial stability and stiffness of the member being insufficient to meet the design requirements after the sleeve is installed, or requiring a longer time to reach the ideal stable state.

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

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

[0007] (4) The corroded parts of the rods are random. The existing casing reinforcement method is difficult to fully reinforce the randomly corroded steel pipes, and the accuracy of locating the corroded parts is not high. Summary of the invention

[0008] In view of the above analysis, the embodiments of the present invention aim to provide a device and method for improving the performance of corroded steel pipes, so as to solve the problem that the stiffness of the structure is not improved in the early stage and cannot accurately adapt to the corroded parts during the reinforcement of existing corroded steel pipes.

[0009] On the one hand, the present invention provides a device for improving the performance of a corroded steel pipe, comprising a first sleeve member, a second sleeve member and a third sleeve member, wherein the first sleeve member, the second sleeve member and the third sleeve member are arranged to form a cylindrical space, and the corroded steel pipe is arranged in the cylindrical space, and the first sleeve member, the second sleeve member and the third sleeve member 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, and the two first side plates are symmetrically arranged on both sides of the first arc-shaped plate.

[0011] Furthermore, two ends of the first side plate are flush with 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, and the first protective plate is located on the inner side of 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 is connected to the first protective plate.

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

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

[0016] Further, the second sleeve member includes a second curved plate, and the third sleeve member includes a third curved 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 a corroded steel pipe, and the corroded steel pipe is reinforced by using the above-mentioned device for improving the performance of a corroded steel pipe.

[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, and 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 coordinated work of the sleeve and the original pressure rod can be realized without relying on further deformation of the rod, thereby improving the reinforcement efficiency and having a relatively simple structure.

[0021] (2) The present invention provides a straight hole and / or a cross hole on the arc plate, and a groove is provided on the side wall of the straight hole and / or the cross hole. The limiting column on the side wall of the slider cooperates with the groove, so that the slider can slide in the straight hole and / or the cross hole. The hollow rod cooperates with the slider thread, which can not only adjust the distance between the protective plate and the rusted steel pipe, provide prestress for the rusted steel pipe in the initial 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, but 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 of the present invention is threadedly connected to the slider, 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 of the non-corroded area.

[0023] (4) The present invention enables the protective plate to face the rusted area by coarse and fine adjustment of the position of the protective plate, thereby ensuring accurate reinforcement of the rusted area and avoiding further rust and deformation.

[0024] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0026] Figure 1 It is a schematic diagram of the positions of the lifting device and the corroded steel pipe excluding the protective plate of a specific embodiment;

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

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

[0029] Figure 4 It is a schematic diagram of the connection between the first protective plate, the first hollow rod and the first sliding block in a specific embodiment;

[0030] Figure 5 It is a schematic diagram of the connection between the first support rod, the second sliding block and the cross hole of a specific embodiment;

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

[0032] Figure 7 It is a schematic diagram of the connection between the second protective plate, the second hollow rod and the third sliding block in a specific embodiment;

[0033] Figure 8 It is a schematic diagram of the connection between the second support rod, the fourth sliding block and the cross hole of a specific embodiment;

[0034] Fig. 9 is a structural schematic diagram of a third sleeve member in a specific embodiment;

[0035] Fig.10 is a schematic diagram of the connection between the third protective plate, the third hollow rod and the fifth sliding block in a specific embodiment;

[0036] Fig.11 It is a connection diagram of the third support rod, the sixth sliding block and the cross hole of a specific embodiment.

[0037] Reference numerals:

[0038] 100-first sleeve member; 101-first arc 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 column; 110-first cross hole; 111-second groove; 112-second slider; 113-second limiting column; 114-first through hole; 115-first support rod;

[0039] 200-second sleeve member; 201-second arc 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 column; 210-second cross hole; 211-fourth groove; 212-fourth slider; 213-fourth limiting column; 214-second through hole; 215-second support rod;

[0040] 300-third sleeve member; 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 column; 310-third cross hole; 311-sixth groove; 312-sixth slider; 313-sixth limiting column; 314-third through hole; 315-third support rod;

[0041] 001-Rusted steel pipe; 002-Rusted area. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings 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 used to limit the scope of the present invention.

[0043] Example 1

[0044] A specific embodiment of the present invention, as Figure 1 and Figure 2 As shown, a device for improving the performance of a corroded steel pipe is disclosed, comprising a first sleeve member 100, a second sleeve member 200 and a third sleeve member 300. The first sleeve member 100, the second sleeve member 200 and the third sleeve member 300 are arranged to form a cylindrical space. The corroded steel pipe 001 is arranged in the cylindrical space and is supported and prestressed by the first sleeve member 100, the second sleeve member 200 and the third sleeve member 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. Two first side plates 102 are provided. 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, and 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 curved plate 101 to facilitate the connection of the first curved plate 101 with other components. It can be understood that a first connecting hole 103 is provided on the first side plate 102, and a plurality of first connecting holes 103 are provided, and the plurality of 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 in the shape of a long straight strip, and its cross section is an annular surface, where the cross section refers to a surface perpendicular to the length direction of the first arc-shaped plate 101 .

[0048] In order to fix the rusted area 002 on the rusted steel pipe 001 in a targeted manner to prevent the rusted area 002 from further rusting and deformation, 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 on the inner side of the first curved plate 101. One end of the first hollow rod 105 passes through the first curved plate 101 and is connected to the first protective plate 104. The distance between the first protective plate 104 and the rusted steel pipe 001 can be adjusted through the first hollow rod 105.

[0049] It should be noted that the inner side described in this embodiment refers to the side of the cylindrical space surrounded by the first sleeve member 100, the second sleeve member 200 and the third sleeve member 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 fixation of 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 stiffness of the corroded steel pipe 001 in the initial fixation. At the same time, this embodiment can realize the coordinated work of the sleeve and the original pressure rod without relying on further deformation of the rod, thereby improving the reinforcement efficiency and having a relatively simple structure.

[0051] In order to cooperate with the connection of the first hollow rod 105, as Figure 1 , Figure 3 and Figure 4 As shown, a first straight hole 106 is provided on the first curved plate 101, and a first groove 107 is provided on the side wall of the first straight hole 106. The first sleeve member 100 further includes a first slider 108, and first limiting columns 109 are provided on two opposite side walls of the first slider 108. The first limiting columns 109 cooperate with the first groove 107, so that the first slider 108 can slide in the first straight hole 106 to adjust the position of the first slider 108 in 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, a thread is provided in the middle of the first hollow rod 105, and a screw hole is provided on the first slider 108. 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 driven away from or close to the rusted steel pipe 001.

[0053] In this embodiment, a first straight hole 106 is provided on the first arc plate 101, and a first groove 107 is provided on the side wall of the first straight hole 106. The first limiting column 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 straight 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 for the rusted steel pipe 001 in the initial stage of fixing the rusted steel pipe 001, provide stable support for the rusted steel pipe 001 in the later stage of fixing the rusted steel pipe 001, and 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, a plurality of first straight holes 106 are provided, and the plurality of first straight holes 106 are arranged along the length direction of the first curved plate 101. The length direction of the first straight hole 106 is the same as the length direction of the first curved plate 101 and / or the length direction of the first straight hole 106 is perpendicular to the length direction of the first curved plate 101. When the length direction of the first straight hole 106 is the same as the length direction of the first curved plate 101, a plurality of columns of first straight holes 106 are arranged along the length direction of the first curved plate 101, and the first straight holes 106 in adjacent columns are aligned or staggered.

[0055] Furthermore, if Figure 1 , Figure 3 and Figure 5 As shown, the first curved 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 member 100 also includes a second slider 112, and the side wall of the second slider 112 is provided with a second limiting column 113. The second limiting column 113 cooperates with the second groove 111, so that the second slider 112 can slide in the first cross hole 110. The second slider 112 is provided with a screw hole, and the first hollow rod 105 can be threadedly matched with the second slider 112 to adjust the distance between the first protective plate 104 and the rusted steel pipe 001. The first cross holes 110 are evenly arranged along the length direction of the first curved plate 101.

[0056] It is worth noting that the first straight hole 106 or the first cross hole 110 can be provided separately on the first curved plate 101, or the first straight hole 106 and the first cross hole 110 can coexist. When the first straight hole 106 and the first cross hole 110 are provided on the first curved plate 101 at the same time, 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 at this time, the length direction of the two first straight holes 106 is the same as the length direction of the first curved plate 101. The first straight hole 106 and the first cross hole 110 are collectively referred to as the first through hole 114.

[0057] In order to further improve the fixing effect of the corroded steel pipe 001 and prevent the deformation of other non-corroded areas, such as Figure 5 As shown, the first sleeve member 100 further includes a first support rod 115, which is threadedly connected to the first slider 108 or the second slider 112, and 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 of the non-corroded area.

[0058] Similarly, if 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. Two second side plates 202 are provided. 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, and 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 curved plate 201 to facilitate the connection of the second curved plate 201 with other components. Understandably, the second side plate 202 is provided with a second connection hole 203, and a plurality of second connection holes 203 are provided, and the plurality of second connection holes 203 are evenly distributed along the length direction of the second side plate 202. It should be noted that the second curved plate 201 is in the shape of a long straight strip, and the cross section is an annular surface, and the cross section refers to the surface perpendicular to the length direction of the second curved plate 201.

[0060] In order to fix the rusted area 002 on the rusted steel pipe 001 in a targeted manner to prevent the rusted area 002 from further rusting and deformation, 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 on the inner side of the second curved plate 201. One end of the second hollow rod 205 passes through the second curved plate 201 and is connected to the second protective plate 204. The distance between the second protective plate 204 and the rusted 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 fixation of 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 stiffness of the corroded steel pipe 001 in the initial fixation. At the same time, this embodiment can realize the coordinated work of the sleeve and the original pressure rod without relying on further deformation of the rod, thereby improving the reinforcement efficiency and having a relatively simple structure.

[0062] In order to cooperate with the connection of the second hollow rod 205, as Figure 1 , Figure 6 and Figure 7 As shown, the second curved 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 member 200 also includes a third slider 208, and third limiting columns 209 are provided on two opposite side walls of the third slider 208. The third limiting columns 209 cooperate with the third groove 207, so that the third slider 208 can slide in the second straight hole 206 to adjust the position of the third slider 208 in 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 rusted steel pipe 001, a thread is provided in the middle of the second hollow rod 205, and a screw hole is provided on the third slider 208. 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 is threadedly connected to the third slider 208. By rotating the second hollow rod 205, the second protective plate 204 can be driven away from or close to the rusted steel pipe 001.

[0064] In this embodiment, a second straight hole 206 is provided on the second arc plate 201, and a third groove 207 is provided on the side wall of the second straight hole 206. The third limiting column 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 straight hole 206. The second hollow rod 205 and the third slider 208 are threadedly cooperated, which can not only adjust the distance between the second protective plate 204 and the rusted steel pipe 001, provide prestress for the rusted steel pipe 001 in the initial stage of fixing the rusted steel pipe 001, and provide stable support for the rusted steel pipe 001 in the later stage of fixing the rusted steel pipe 001, but also can 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 rusted steel pipe 001, a plurality of second straight holes 206 are provided, and the plurality of second straight holes 206 are arranged along the length direction of the second curved plate 201. The length direction of the second straight hole 206 is the same as the length direction of the second curved plate 201 and / or the length direction of the second straight hole 206 is perpendicular to the length direction of the second curved plate 201. When the length direction of the second straight hole 206 is the same as the length direction of the second curved plate 201, a plurality of rows of second straight holes 206 are arranged along the length direction of the second curved plate 201, and the second straight holes 206 in adjacent rows are aligned or staggered.

[0066] Furthermore, if Figure 1 , Figure 6 and Figure 8 As shown, the second curved plate 201 is provided with a second cross hole 210, and the side wall of the second cross hole 210 is provided with a fourth groove 211. The second sleeve member 200 also includes a fourth slider 212, and the side wall of the fourth slider 212 is provided with a fourth limiting column 213. The fourth limiting column 213 cooperates with the fourth groove 211, so that the fourth slider 212 can slide in the second cross hole 210. The fourth slider 212 is provided with a screw hole, and the second hollow rod 205 can be threadedly matched with the fourth slider 212 to adjust the distance between the second protective plate 204 and the rusted steel pipe 001. The second cross holes 210 are evenly arranged along the length direction of the second curved plate 201.

[0067] It is worth noting that the second straight hole 206 or the second cross hole 210 can be provided separately on the second curved plate 201, or the second straight hole 206 and the second cross hole 210 can coexist. When the second straight hole 206 and the second cross hole 210 are provided on the second curved plate 201 at the same time, 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 curved plate 201. The second straight hole 206 and the second cross hole 210 are collectively referred to as the second through hole 214.

[0068] In order to further improve the fixing effect of the corroded steel pipe 001 and prevent the deformation of other non-corroded areas, such as Figure 1 , Figure 2 and Figure 8 As shown, the first sleeve member 100 further includes a second support rod 215, which is threadedly connected to the third slider 208 or the fourth slider 212, and 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 of the non-corroded area.

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

[0070] In this embodiment, a third side plate 302 is provided on both sides of the third curved plate 301 to facilitate the connection of the third curved plate 301 with other components. It can be understood that a third connecting hole 303 is provided on the third side plate 302, and a plurality of third connecting holes 303 are provided, and the plurality of third connecting holes 303 are evenly distributed along the length direction of the third side plate 302. It should be noted that the third curved plate 301 is in the shape of a long straight strip, and the cross section is an annular surface, and the cross section refers to the surface perpendicular to the length direction of the third curved plate 301. The first curved plate 101, the second curved plate 201 and the third curved 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 connecting with nuts. After the first curved plate 101, the second curved plate 201 and the third curved plate 301 are connected, they are surrounded by a complete sleeve. Preferably, the first curved plate 101, the second curved plate 201 and the third curved plate 301 are a complete sleeve divided into three petals.

[0071] In order to fix the rusted area 002 on the rusted steel pipe 001 in a targeted manner to prevent the rusted area 002 from further rusting and deformation, as Fig.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 on the inner side of the third curved plate 301. One end of the third hollow rod 305 passes through the third curved plate 301 and is connected to the third protective plate 304. The distance between the third protective plate 304 and the rusted 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 fixation of 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 stiffness of the corroded steel pipe 001 in the initial fixation. At the same time, this embodiment can realize the coordinated work of the sleeve and the original pressure rod without relying on further deformation of the rod, thereby improving the reinforcement efficiency and having a relatively simple structure.

[0073] In order to cooperate with the connection of the third hollow rod 305, as Figure 1 and Fig. 9 As shown, a third straight hole 306 is provided on the third curved plate 301, and a fifth groove 307 is provided on the side wall of the third straight hole 306. The third sleeve member 300 further includes a fifth slider 308, and a fifth limiting column 309 is provided on two opposite side walls of the fifth slider 308. The fifth limiting column 309 cooperates with the fifth groove 307, so that the fifth slider 308 can slide in the third straight hole 306 to adjust the position of the fifth slider 308 in 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 rusted steel pipe 001, a thread is provided in the middle of the third hollow rod 305, and a screw hole is provided on the fifth slider 308. 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 is threadedly connected to the fifth slider 308. By rotating the third hollow rod 305, the third protective plate 304 can be driven away from or close to the rusted steel pipe 001.

[0075] In this embodiment, a third straight hole 306 is provided on the third arc plate 301, and a fifth groove 307 is provided on the side wall of the third straight hole 306. The fifth limiting column 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 straight hole 306, and the third hollow rod 305 is threadedly cooperated with the fifth slider 308, which can not only adjust the distance between the third protective plate 304 and the rusted steel pipe 001, provide prestress for the rusted steel pipe 001 in the initial stage of fixing the rusted steel pipe 001, and provide stable support for the rusted steel pipe 001 in the later stage of fixing the rusted steel pipe 001, but also can 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 rusted steel pipe 001, a plurality of third straight holes 306 are provided, and the plurality of third straight holes 306 are arranged along the length direction of the third curved plate 301. The length direction of the third straight hole 306 is the same as the length direction of the third curved plate 301 and / or the length direction of the third straight hole 306 is perpendicular to the length direction of the third curved plate 301. When the length direction of the third straight hole 306 is the same as the length direction of the third curved plate 301, a plurality of rows of third straight holes 306 are arranged along the length direction of the third curved plate 301, and the third straight holes 306 in adjacent rows are aligned or staggered.

[0077] Furthermore, if Fig. 9 and Fig.11As shown, the third curved plate 301 is provided with a third cross hole 310, and the side wall of the third cross hole 310 is provided with a sixth groove 311. The third sleeve member 300 also includes a sixth slider 312, and the side wall of the sixth slider 312 is provided with a sixth limiting column 313, and the sixth limiting column 313 cooperates with the sixth groove 311, so that the sixth slider 312 can slide in the third cross hole 310. The sixth slider 312 is provided with a screw hole, and the third hollow rod 305 can be threadedly matched with the sixth slider 312 to adjust the distance between the third protective plate 304 and the rusted steel pipe 001. The third cross holes 310 are evenly arranged along the length direction of the third curved plate 301.

[0078] It is worth noting that the third straight hole 306 or the third cross hole 310 can be provided separately on the third curved plate 301, or the third straight hole 306 and the third cross hole 310 can coexist. When the third straight hole 306 and the third cross hole 310 are provided on the third curved plate 301 at the same time, 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 at this time, the length direction of the two third straight holes 306 is the same as the length direction of the third curved plate 301. The third straight hole 306 and the third cross hole 310 are collectively referred to as a third through hole 314.

[0079] In order to further improve the fixing effect of the corroded steel pipe 001 and prevent the deformation of other non-corroded areas, such as Fig.11 As shown, the third sleeve member 300 further includes a third support rod 315, which can be threadedly connected to the fifth slider 308 or the sixth slider 312, and 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 of the non-corroded area.

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

[0081] Example 2

[0082] Another specific embodiment of the present invention discloses a device for improving the performance of a corroded steel pipe, which is different from the first embodiment in that an elastic contact portion is provided at the contact end of the first support rod 115, the second support rod 215, the third support rod 315 and the corroded steel pipe 001, and the elastic contact portion includes an elastic member and an arc-shaped pressing sheet, one end of the elastic member is connected to the end of the first support rod 115, the second support rod 215, and the third support rod 315 (the end is provided with a hole so that the elastic member can rotate in the hole), and the other end is connected to the arc-shaped pressing sheet, which is used to contact the corroded steel pipe 001. Due to the large curvature of the arc-shaped pressing sheet, the arc-shaped pressing sheet is in surface contact with the corroded steel pipe 001, avoiding damage caused by the end of the first support rod 115, the second support rod 215, and the third support rod 315 directly contacting the corroded steel pipe 001 in a point-to-point or point-to-line manner, and at the same time, the elastic member can provide stable support for the corroded steel pipe 001 after being fully compressed. Preferably, the elastic member is a spring. The other structures and beneficial effects are the same as those of Example 1 and will not be described in detail here.

[0083] Example 3

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

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

[0086] Specifically, since the rusted area 002 may be located near the straight hole (the first straight hole 106, the second straight hole 206, and the third straight hole 306) or the cross hole (the first cross hole 110, the second cross hole 210, and the third cross 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 guard plate 104 is connected to the first hollow rod 105, and / or the second guard plate 204 is connected to the second hollow rod 205, and / or the third guard plate 304 is connected to the third hollow rod 305.

[0087] Step 2: Connect the first curved plate 101, the second curved plate 201 and the third curved plate 301 to form a casing, and surround the corroded steel pipe 001 in the casing space formed by the three. Specifically, the first curved plate 101, the second curved plate 201 and the third curved plate 301 are connected by bolts and nuts.

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

[0089] Specifically, according to 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, the hollow rod (the first hollow rod 105, the second hollow rod 205 or the third hollow rod 305) is held so that the first slider 108, the third slider 208 and / or the fifth slider 308 are located in the straight hole or the cross hole and slide 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 opposite to 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, the bottom edge of the protective plate is bonded with a foam seal, preferably, the cross-section of the foam seal is 5 mm wide and 1-2 mm high, and the hollow rod is rotated to make the foam seal at the bottom of the protective plate seal in contact with the corroded steel pipe 001, thereby sealing the corroded area 002. The foam seal can fit the outer wall of the corroded steel pipe 001 to form a sealed area, which is convenient for subsequent glue injection.

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

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

[0096] Specifically, for the non-corroded area, the support rods (first support rod 115, second support rod 215, third support rod 315) are connected to the slider, and the front end of the support rod is in contact with the corroded steel pipe 001 to form a multi-point stable support, so that prestress can be obtained in the initial stage of fixing the corroded steel pipe 001, the sleeve and the original pressure rod can work together, and the rigidity of the corroded steel pipe 001 in the initial stage of fixing can be effectively improved.

[0097] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A device for improving the performance of a corroded steel pipe, characterized in that: The invention comprises a first sleeve member (100), a second sleeve member (200) and a third sleeve member (300); the first sleeve member (100), the second sleeve member (200) and the third sleeve member (300) are arranged to form a cylindrical space; a corroded steel pipe (001) is arranged in the cylindrical space; the first sleeve member (100), the second sleeve member (200) and the third sleeve member (300) can provide support force and prestress for the corroded steel pipe (001).

2. The device for improving the performance of a corroded steel pipe according to claim 1, characterized in that: The first sleeve component (100) comprises a first arc-shaped plate (101) and a first side plate (102). Two first side plates (102) are provided, and the two first side plates (102) are symmetrically arranged on both sides of the first arc-shaped plate (101).

3. The device for improving the performance of a corroded steel pipe according to claim 2, characterized in that: Two ends of the first side plate (102) are flush with two ends of the first arc-shaped plate (101), and a plurality of first connection holes (103) are provided along the length direction of the first side plate (102).

4. The device for improving the performance of a corroded steel pipe according to claim 3, characterized in that: The first sleeve member (100) further comprises a first protection plate (104), wherein the first protection plate (104) is located on the inner side of the first arc-shaped plate (101).

5. The device for improving the performance of corroded steel pipe according to claim 4, characterized in that: The first sleeve component (100) further comprises a first hollow rod (105), 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).

6. The device for improving the performance of a corroded steel pipe according to claim 5, characterized in that: The distance between the first protective plate (104) and the corroded steel pipe (001) can be adjusted by the first hollow rod (105).

7. The device for improving the performance of a corroded steel pipe according to claim 4, characterized in that: The first protective plate (104) is used to fix the rusted area (002) on the rusted steel pipe (001).

8. The device for improving the performance of a corroded steel pipe according to claim 2, characterized in that: The second sleeve member (200) includes a second curved plate (201), and the third sleeve member (300) includes a third curved plate (301).

9. The device for improving the performance of a corroded steel pipe according to claim 8, characterized in that: The first arc-shaped plate (101), the second arc-shaped plate (201) and the third arc-shaped plate (301) are connected to form a complete sleeve.

10. A method for improving the performance of a corroded steel pipe, comprising reinforcing the corroded steel pipe by using the device for improving the performance of a corroded steel pipe as described in any one of claims 1 to 9.

Images