A support tool for slurry circulating pump piping

Abstract

The utility model provides a kind of support tool for slurry circulating pump pipeline, it is related to wet flue gas desulfurization system equipment maintenance technical field, it includes multiple support pipe, multiple stud, a support tile and a gasket, multiple the support pipe is distributed and one end is concentrated in same point welding fixed in divergent, multiple the stud and multiple support pipe one to one correspond, the one end of each stud is installed in support pipe and can be moved relative to the axial movement of support pipe, the other end of each stud is all with support tile abut, the support tile overall is in the shape of '' C '', the gasket is covered in the outside circular arc wall surface of support tile, the utility model solves the problem that lining rubber layer is prone to local collapse or warping in prior art, realizes the effective fit of lining rubber layer and pipeline inner wall.

Description

Technical Field

[0001] This utility model relates to the field of equipment maintenance technology for wet desulfurization systems, and in particular to a support tool for slurry circulation pump pipelines. Background Technology

[0002] In the energy industry, such as thermal power, wet desulfurization systems are core environmental protection equipment for controlling sulfide emissions. As a key power component of the system, the slurry circulation pump's conveying pipeline needs to be lined with a rubber layer on its inner wall for corrosion protection because it is in long-term contact with slurry containing corrosive media, in order to ensure the service life of the pipeline and the stable operation of the system. When the rubber lining is damaged or aged, it needs to be repaired in time. During the repair process, the rubber lining needs to be lifted up and tightly attached to the inner wall of the pipeline.

[0003] Currently, the industry commonly uses distributed support components for supporting the repair of rubber-lined slurry circulation pump pipelines. Commonly used components include wooden blocks, metal blocks, or simple metal gaskets. The specific operation process is as follows: workers first insert the distributed support components one by one into the pipeline through the pipeline inspection port, at the preset support points below the rubber lining; then, they manually adjust the height of each support component to gradually lift the rubber lining. However, stress concentration easily forms at the contact points during the support process, leading to tearing, indentation, or localized deformation of the rubber lining. Furthermore, Chinese utility model patent CN219912238U discloses an intelligent internal support device to prevent pipeline deformation during HDPE backfilling. It includes multiple support rods, each with an arc-shaped gasket connected to its end, which can conform to the inner wall of the pipeline.

[0004] In the aforementioned prior art, although the arc-shaped gasket can increase the stress-bearing area of ​​the pipeline and reduce the damage of local stress to the pipeline body, due to the gap between adjacent arc-shaped gaskets, in the scenario of rubber lining repair of slurry circulation pump pipelines, the area of ​​the rubber lining layer corresponding to the gap between adjacent arc-shaped gaskets will experience local collapse or warping due to lack of support, and cannot achieve effective adhesion with the inner wall of the pipeline. Utility Model Content

[0005] This application provides a support tool for slurry circulation pump pipelines, which solves the problem of local collapse or warping of the rubber lining layer in the prior art, and achieves effective adhesion between the rubber lining layer and the inner wall of the pipeline.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a support tool for a slurry circulation pump pipeline, comprising multiple support pipes, multiple studs, a support tile, and a gasket. The multiple support pipes are distributed in a divergent manner and their ends are concentrated at the same point and welded and fixed. The multiple studs correspond one-to-one with the multiple support pipes. One end of each stud is installed inside the support pipe and can move axially relative to the support pipe. The other end of each stud abuts against the support tile. The support tile is C-shaped in general. The gasket covers the outer arc wall surface of the support tile.

[0007] When using this tool, first insert it into the pipe through the pipe inspection port, aligning the outer gasket of the support tile with the underside of the pipe's rubber lining. Then, adjust the studs inside each support pipe according to the needs of the rubber lining repair, allowing the studs to extend axially along the support pipe to push the support tile up the rubber lining. Since the support tile is C-shaped, it avoids the lack of support caused by local gaps, thus preventing the rubber lining from collapsing or warping, and helping to ensure the quality of the rubber lining repair.

[0008] As a further improvement to the above solution, the inner arc wall of the support tile is provided with multiple positioning sleeves, each corresponding to a different support tube, and each positioning sleeve is located at the position pointed to by the axial extension line of the corresponding support tube; the inner wall of the support tube near the support tile is provided with internal threads, one end of the stud is installed in the end of the support tube through threaded engagement, and the other end of the stud extends into the corresponding positioning sleeve and rotates with the positioning sleeve; the stud is installed in the end of the support tube through threaded engagement, and the axial extension and retraction of the stud can be controlled by adjusting the thread, while the rotational engagement of the other end of the stud with the positioning sleeve facilitates the adjustment of the lifting height of the rubber lining layer.

[0009] As a further improvement to the above solution, an adjusting nut is nested around the outer periphery of each stud. The adjusting nut is welded and fixed to the stud. When the adjusting nut rotates, the stud rotates synchronously with the adjusting nut to move axially along the support tube. Thus, the operator can apply force to adjust the stud with the help of tools such as wrenches, thereby driving the stud to rotate, which is convenient for operation.

[0010] As a further improvement to the above solution, the support tube has a cylindrical cavity inside. The end of the stud away from the support tile extends into the cylindrical cavity of the corresponding support tube, and the stud slides in contact with the inner wall of the cylindrical cavity. The other end of the stud is fixedly connected to the inner arc wall of the support tile. Each stud is rotatably fitted with a push nut, and the end face of the push nut contacts the end of the support tube. Thus, when the push nut is rotated, its end face can abut against the end of the support tube and generate axial thrust, thereby driving the stud to lift the rubber lining layer from the support tile.

[0011] As a further improvement to the above solution, multiple positioning nuts are welded to the inner arc wall of the support tile. Each positioning nut corresponds to a different support tube, and each positioning nut is located at the position pointed to by the axial extension line of the corresponding support tube. The end of the stud away from the support tube is screwed into the corresponding positioning nut and welded to the positioning nut for fixation. This can enhance the firmness of the connection between the stud and the support tile and prevent the stud from detaching from the support tile during adjustment.

[0012] As a further improvement to the above solution, a washer is provided between each of the push nuts and the end of the corresponding support tube, and the washer is sleeved on the outer circumference of the stud; the washer can isolate the direct contact between the push nut and the end of the support tube, and avoid hard friction between the two when the push nut is rotated for adjustment, thus reducing the wear of the push nut and the end of the support tube.

[0013] As a further improvement to the above solution, the support tool for the slurry circulation pump pipeline also includes a support arm; the support arm is a flexible structure that is thin in the middle and thick at both ends. The middle part of the support arm is fixedly connected to the end of the support pipe away from the support tile, and the two ends of the support arm are respectively fixedly connected to the two ends of the support tile. Thus, the support pipe and the support tile are connected into a whole by the support arm, which can improve the overall integrity of the tool and ensure that the tool is not easily loosened when working in the pipeline.

[0014] As a further improvement to the above solution, multiple support tubes are arranged at equal angular intervals along the circumferential direction.

[0015] As a further improvement to the above solution, the gasket is made of nitrile rubber.

[0016] As can be seen from the above technical solutions, this utility model has at least the following technical effects or advantages: When using this tool, first insert it into the pipe through the pipe inspection port, aligning the outer gasket of the support tile with the underside of the pipe's rubber lining. Then, adjust the studs inside each support pipe according to the needs of the rubber lining repair, allowing the studs to extend axially along the support pipe to push the support tile up the rubber lining. Because the support tile is C-shaped, it avoids the lack of support caused by local gaps, thus preventing the rubber lining from collapsing or warping, and ensuring improved quality of the rubber lining repair. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention in Embodiment 1; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the overall structure of the present invention in Embodiment 2; Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.

[0018] Explanation of reference numerals in the attached diagram: 1. Gasket, 2. Support tile, 3. Stud, 4. Support tube, 5. Support arm, 6. Positioning sleeve, 7. Adjusting nut, 8. Positioning nut, 9. Push nut, 10. Washer. Detailed Implementation To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.

[0019] Example 1 This utility model discloses a support tool for a slurry circulation pump pipeline, which includes a support tile 2 and multiple support pipes 4. The multiple support pipes 4 are arranged around the same center point, and one end of the multiple support pipes 4 is concentrated at the center point and fixedly connected by welding to form a support structure. The other end of each of the multiple support pipes 4 is equipped with a stud 3. The stud 3 can move axially relative to the support pipe 4. One end of the stud 3 extends into the interior of the support pipe 4 to form an adjustable connection structure with the support pipe 4, and the other end of the stud 3 abuts against the support tile 2 to transmit the supporting force to the support tile 2.

[0020] The support tile 2 has an overall "C" shape. When the stud 3 extends relative to the support pipe 4, its curvature matches the curvature of the inner wall of the slurry circulation pump pipe, thus forming a close fit between the support tile 2 and the inner wall of the pipe. The inner arc wall of the support tile 2 (i.e., the arc surface facing the support pipe 4) is in direct contact with the end of the stud 3; a gasket 1 is embedded on the surface of the outer arc wall of the support tile 2 (i.e., the arc surface facing the pipe lining layer). The gasket 1 completely covers the outer arc wall of the support tile 2, and the outer surface of the gasket 1 is consistent with the curvature of the outer arc wall of the support tile 2, ensuring that the gasket 1 can fully contact the pipe lining layer, achieving effective adhesion between the lining layer and the inner wall of the pipe.

[0021] In this embodiment, the gasket 1 is made of nitrile rubber, which has good corrosion resistance and elasticity: on the one hand, it can adapt to the environment containing corrosive media in the slurry circulation pump pipeline, preventing the gasket 1 from being damaged by corrosion and affecting the support effect; on the other hand, its elasticity can form a buffer during support, preventing the support tile 2 from directly contacting the rubber lining layer and causing scratches or indentations. Meanwhile, multiple support pipes 4 are arranged at equal angular intervals, such as... Figure 1 or Figure 3 As shown, when four support tubes 4 are set, the included angle between adjacent support tubes 4 can be between 40° and 45°. The equal angle distribution can make the support force evenly transmitted to different positions of the support tile 2, prevent the support tile 2 from tilting due to uneven force, and further ensure the tight fit between the liner 1 and the rubber lining layer.

[0022] When applied to the repair of rubber lining in slurry circulation pump pipelines, the operation procedure is as follows: First, insert the tool (single or in pairs) into the pipeline through the pipeline inspection port, aligning the pad 1 on the outside of the support tile 2 with the bottom of the pipeline rubber lining layer; then, according to the location of the damage to the rubber lining layer and the required lifting height, adjust the studs 3 at the ends of each support pipe 4 so that the studs 3 extend axially along the support pipe 4, and the ends of the studs 3 push the support tile 2 towards the inner wall of the pipeline until the pad 1 is in close contact with the rubber lining layer and lifts the rubber lining layer to a position that fits against the inner wall of the pipeline; after the rubber lining layer is repaired, reverse the adjustment of the studs 3 to retract them into the support pipe 4, separating the support tile 2 from the rubber lining layer, and finally remove the support tool from the inspection port.

[0023] This invention increases the contact area between the tool and the rubber lining by using a divergent support tube 4 in conjunction with a C-shaped support tile 2, thus avoiding tearing and indentation of the rubber lining caused by stress concentration at the contact point. At the same time, the integral support tile 2 effectively prevents the collapse or warping of the rubber lining, achieving effective adhesion between the rubber lining and the inner wall of the pipe, and ensuring the quality of the rubber lining repair.

[0024] Specifically, such as Figure 1 Figure 2 As shown, the inner arc wall of the support tile 2 is provided with positioning sleeves 6. The number of positioning sleeves 6 is the same as the number of support tubes 4, and each positioning sleeve 6 is located at the position pointed to by the axial extension line of the corresponding support tube 4, so as to ensure that the force of the stud 3 can be directly transmitted to the support tile 2 along the axial direction of the support tube 4 and avoid force deviation. The inner wall of the support tube 4 near the support tile 2 is provided with internal threads, and the outer circumference of the stud 3 is provided with external threads. The internal threads of the support tube 4 and the stud 3 achieve axial expansion and contraction adjustment through threaded engagement. The other end of the stud 3 extends into the interior of the positioning sleeve 6 and forms a rotational engagement with the positioning sleeve 6 (for example, the inner wall of the positioning sleeve 6 is provided with a smooth surface or an embedded bearing), so that the support tile 2 will not rotate synchronously when the stud 3 is rotated, ensuring the adhesion stability between the support tile 2 and the rubber lining layer.

[0025] Furthermore, an adjusting nut 7 is nested around the outer periphery of the stud 3, and the adjusting nut 7 is fixedly connected to the stud 3 by welding. During operation, the operator can rotate the adjusting nut 7 using a wrench or other tools, simultaneously causing the stud 3 to rotate relative to the support tube 4, thereby achieving axial extension and retraction of the stud 3 through threaded engagement. Thus, the operator can improve the convenience of operation by using a wrench and the adjusting nut 7.

[0026] This utility model also includes a support arm 5, which is a flexible structure that is thinner in the middle and thicker at both ends (such as being made by bending an elastic metal plate). Its flexibility allows the support arm 5 to undergo slight deformation when subjected to force, accommodating the small displacement of the support tile 2. The middle part of the support arm 5 is fixedly connected to the end of the support tube 4 away from the support tile 2 (near the concentrated welding end), and the two ends of the support arm 5 are respectively fixedly connected to the two ends of the support tile 2. The support arm 5 can provide tensile support to both ends of the support tile 2, preventing the support tile 2 from deforming due to excessive force, while also enhancing the overall structural integrity of the entire support tool.

[0027] Example 2 The difference between Example 2 and Example 1 lies in the adjustment structure of the stud 3. The rest of the structure is the same as that of Example 1, and will not be described again here.

[0028] In this embodiment, as Figure 3 , Figure 4 As shown, the inner arc wall of the support tile 2 is directly fixed to one end of the stud 3, and the fixing method can be welding or bolting. The support tube 4 has a cylindrical cavity inside, and the other end of the stud 3 (the end away from the support tile 2) extends into the cavity and is in sliding fit with the inner wall of the cavity, so that the stud 3 can move freely along the axial direction of the cavity. A push nut 9 is rotatably fitted on the outer circumference of the stud 3. The internal thread of the push nut 9 matches the external thread of the stud 3 and is located on the outer side of the end of the support tube 4. When the push nut 9 is rotated, the push nut 9 moves along the axial direction of the stud 3 until its end face abuts against the end of the support tube 4. If the push nut 9 is rotated further, the push nut 9 generates an axial thrust on the end of the support tube 4. Since multiple support tubes 4 form a fixed frame structure, the reaction force can push the stud 3 out, causing the support tile 2 to move towards the rubber lining layer. Similarly, if the push nut 9 is rotated in the opposite direction, the stud 3 can retract into the support tube 4, and the abutment is released.

[0029] Furthermore, positioning nuts 8 are welded to the inner arc-shaped wall of the support tile 2. The number of positioning nuts 8 is the same as that of the support tube 4, and they are located at the axial extension line of the corresponding support tube 4. The end of the stud 3 away from the support tube 4 is screwed into the positioning nut 8 and fixed by welding after screwing. The positioning nut 8 can provide a positioning reference for the stud 3, ensuring that it is set along the axial direction of the support tube 4. On the other hand, the threaded engagement between the stud 3 and the positioning nut 8 and the fixing by welding can enhance the connection strength between the stud 3 and the support tile 2.

[0030] A washer 10 is provided between the push nut 9 and the end of the support tube 4. The washer 10 can be made of metal (such as a steel washer) or wear-resistant rubber. It is sleeved on the outer circumference of the stud 3, with one side conforming to the end face of the push nut 9 and the other side conforming to the end of the support tube 4. The washer 10 can reduce the direct friction between the push nut 9 and the end of the support tube 4 and avoid wear.

[0031] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this utility model and do not require that this utility model be constructed or operated in a specific orientation, and therefore should not be construed as limiting this utility model. The terms "connected" and "linked" in this utility model should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in its embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A support tool for a slurry circulation pump pipeline, comprising a plurality of support pipes (4), characterized in that, It also includes multiple studs (3), a support tile (2) and a gasket (1). Multiple support tubes (4) are distributed in a divergent manner and one end is concentrated at the same point and welded and fixed. Multiple studs (3) correspond one-to-one with multiple support tubes (4). One end of each stud (3) is installed in the support tube (4) and can move axially relative to the support tube (4). The other end of each stud (3) abuts against the support tile (2). The support tile (2) is C-shaped in general. The gasket (1) covers the outer arc wall surface of the support tile (2).

2. A support tool for a slurry circulation pump pipeline according to claim 1, characterized in that, The inner arc wall of the support tile (2) is provided with multiple positioning sleeves (6), which correspond one-to-one with multiple support tubes (4), and each positioning sleeve (6) is located at the position pointed to by the axial extension line of the corresponding support tube (4); the inner wall of the support tube (4) near the support tile (2) is provided with internal threads, one end of the stud (3) is installed in the end of the support tube (4) through threaded engagement, and the other end of the stud (3) extends into the corresponding positioning sleeve (6) and rotates with the positioning sleeve (6).

3. A support tool for a slurry circulation pump pipeline according to claim 2, characterized in that, Each stud (3) has an adjusting nut (7) nested around its outer periphery. The adjusting nut (7) is welded to the stud (3). When the adjusting nut (7) rotates, the stud (3) rotates synchronously with the adjusting nut (7) to move axially along the support tube (4).

4. A support tool for a slurry circulation pump pipeline according to claim 1, characterized in that, The support tube (4) has a cylindrical cavity inside. The end of the stud (3) away from the support tile (2) extends into the cylindrical cavity of the corresponding support tube (4), and the stud (3) slides with the inner wall of the cylindrical cavity. The other end of the stud (3) is fixedly connected to the inner arc wall of the support tile (2). Each stud (3) is rotatably fitted with a push nut (9), and the end face of the push nut (9) contacts the end of the support tube (4).

5. A support tool for a slurry circulation pump pipeline according to claim 4, characterized in that, Multiple positioning nuts (8) are welded on the inner arc wall of the support tile (2). The multiple positioning nuts (8) correspond one-to-one with the multiple support tubes (4), and each positioning nut (8) is located at the position pointed to by the axial extension line of the corresponding support tube (4). The end of the stud (3) away from the support tube (4) is screwed into the corresponding positioning nut (8) and welded to the positioning nut (8) for fixation.

6. A support tool for a slurry circulation pump pipeline according to claim 5, characterized in that, A washer (10) is provided between the end of each push nut (9) and the corresponding support tube (4), and the washer (10) is sleeved on the outer periphery of the stud (3).

7. A support tool for a slurry circulation pump pipeline according to any one of claims 1 to 6, characterized in that, It also includes a support arm (5); the support arm (5) is a flexible structure that is thin in the middle and thick at both ends. The middle part of the support arm (5) is fixedly connected to the end of the support tube (4) away from the support tile (2), and the two ends of the support arm (5) are fixedly connected to the two ends of the support tile (2) respectively.

8. A support tool for a slurry circulation pump pipeline according to any one of claims 1 to 6, characterized in that, Multiple support tubes (4) are arranged at equal angular intervals along the circumference.

9. A support tool for a slurry circulation pump pipeline according to any one of claims 1 to 6, characterized in that, The gasket (1) is made of nitrile rubber.

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