Repair assembly and repair method for pulverized coal conveying pipeline
By using repair components of substrates and barrier layers on coal dust transportation pipelines, the problem of coal dust leakage caused by pipeline leakage is solved, safe and convenient repair results are achieved, and the repair strength and service life are improved.
Patent Information
- Application Number
- CN202410992372.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-02-14
AI Technical Summary
Coal powder transportation pipelines are prone to leakage points during long-term use, resulting in coal powder leakage. The existing repair methods have safety hazards and insufficient repair strength.
A repair assembly for a coal dust transport pipeline is provided, including a substrate and a barrier layer, which is fixed to the outer peripheral wall of the pipeline, and the barrier layer fills the leakage point to block the coal dust.
By installing repair components externally, the leakage points can be effectively blocked, safety hazards can be reduced, repair strength can be improved, and the service life of repair components can be extended.
Smart Images
Figure CN119435877A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of coal powder transportation, and in particular to a repair component and a repair method for a coal powder transportation pipeline. Background Art
[0002] Coal powder needs to be transported in a specific pipeline driven by hot air. Since the hot air has a high wind speed and a high wind pressure, when the hot air carries the coal powder through the pipeline, the inner wall of the pipeline is easily damaged by long-term wear and tear. The damaged inner wall is easy to fall off and form a leak point, causing the coal powder to leak from the leak point.
[0003] In the related technology, the repair of leaks requires that the maintenance personnel drill into the pipeline to perform coating repairs after the coal powder input equipment is shut down, or replace the entire leaking pipe section that is too damaged. Among them, the environment inside the pipeline is narrow, and there are many safety risks such as suffocation, falling, and insufficient lighting, making the repair work more difficult. In addition, the wear surface at the leak point is uneven, and the coating repair cannot ensure the roundness of the pipe wall. It is easy to produce gaps at the bonding or coating and gradually accumulate coal powder, resulting in reduced repair strength, easy to re-leakage, and a short maintenance cycle. At the same time, the repair cost of replacing the entire pipe section is high, which reduces economic benefits. Summary of the invention
[0004] The purpose of the present disclosure is to provide a repair assembly and a repair method for a coal powder transportation pipeline, so as to at least partially solve the problems existing in the above-mentioned related technologies.
[0005] In order to achieve the above-mentioned objectives, the first aspect of the present disclosure provides a repair assembly for a coal powder transport pipeline, the repair assembly comprising: a substrate, used to be fixed to the outer peripheral wall of the pipeline to cover the leakage point of the pipeline; and a barrier layer, fixed to the side of the substrate facing the pipeline, used to isolate the coal powder, wherein the barrier layer is at least completely filled in the leakage point.
[0006] Optionally, a fixing portion is provided at an edge of the substrate, the fixing portion is fixedly connected to the outer peripheral wall of the pipe, and the substrate is configured to seal between the substrate and the pipe when the fixing portion is fixedly connected to the outer peripheral wall of the pipe.
[0007] Optionally, a surface of the barrier layer located inside the pipe is adapted to be rounded with an inner wall of the pipe.
[0008] Optionally, the barrier layer includes a plurality of barrier members, and the plurality of barrier members are sequentially attached to a side of the substrate facing the pipeline.
[0009] Optionally, the barrier is made of wear-resistant ceramics.
[0010] A second aspect of the present disclosure provides a method for repairing a coal powder transport pipeline, the method comprising: obtaining the size of a leak point of the pipeline; selecting a substrate, the substrate being used to cover the leak point; fixing a barrier layer on a side of the substrate facing the pipeline, and making the barrier layer at least completely fill the leak point; and fixing the substrate on the outer peripheral wall of the pipeline.
[0011] Optionally, the step of obtaining the size of the leak point of the pipeline includes: obtaining a first extreme size of the leak point along the circumference of the pipeline; and obtaining a second extreme size of the leak point along the axial direction of the pipeline. The step of selecting a substrate comprises: A rectangular plate is selected according to the first extreme size and the second extreme size, wherein one side of the rectangular plate is longer than the first extreme size and the other side is longer than the second extreme size; and the rectangular plate is bent into a shape suitable for the outer peripheral wall of the pipe.
[0012] Optionally, the step of fixing the barrier layer includes: sequentially bonding and fixing a plurality of barrier members to a side of the substrate facing the pipeline.
[0013] Optionally, the step of fixing the barrier layer comprises: making the surface of the barrier layer located in the pipe suitable for being rounded with the inner wall of the pipe.
[0014] Optionally, the step of fixing the substrate on the outer peripheral wall of the pipe includes: fixing the substrate to the outer peripheral wall of the pipe through a fixing portion at an edge, and forming a seal between the substrate and the pipe.
[0015] Through the above technical solution, the repair assembly is shaped by the substrate covering the leaking point on the outer peripheral wall of the pipeline, and the leaking point is blocked by the barrier layer arranged on the side of the substrate facing the pipeline. The barrier layer can be filled into the leaking point of the pipeline after the substrate is fixed to the outer peripheral wall of the pipeline. The overall structure of the repair assembly is stable, the effect of blocking the leaking point is good, and the leaking point can be repaired from the outer peripheral wall of the pipeline, avoiding maintenance personnel from entering the pipeline to work, reducing safety hazards.
[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 It is a cross-sectional schematic diagram of a coal powder transport pipeline and a repair assembly according to an exemplary embodiment.
[0018] Figure 2 is a schematic cross-sectional view of a repair assembly according to an exemplary embodiment.
[0019] Figure 3 is a schematic diagram of a concave surface of a repair component according to an exemplary embodiment.
[0020] Figure 4 is a schematic diagram of a repair method according to an exemplary embodiment.
[0021] Figure 5 is a schematic diagram of a repair method according to an exemplary embodiment.
[0022] Figure 6 is a schematic diagram of a repair method according to an exemplary embodiment.
[0023] Figure 7 is a schematic diagram of a repair method according to an exemplary embodiment.
[0024] Figure 8 is a schematic diagram of a repair method according to an exemplary embodiment.
[0025] Fig. 9 is a schematic diagram of a repair method according to an exemplary embodiment.
[0026] Description of Reference Numerals 1-repair component, 10-substrate, 101-fixing part, 11-barrier layer, 111-barrier member, 2-pipeline, 21-leak point. DETAILED DESCRIPTION
[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0028] In the present disclosure, unless otherwise specified, directional words such as “inner” and “outer” used refer to the inner and outer sides of relevant components relative to their respective surface contours in actual use.
[0029] In addition, the terms "first", "second", etc. used in the present disclosure are intended to distinguish one element from another and do not have an order or importance.
[0030] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0031] A first aspect of the present disclosure provides a repair assembly for a coal powder transport pipeline, referring to Figure 1The repair assembly 1 may include a substrate 10 and a barrier layer 11. The substrate 10 may be fixed to the outer peripheral wall of the pipeline 2 to cover the leak point 21 of the pipeline 2, and the barrier layer 11 may be fixed to the side of the substrate 10 facing the pipeline 2 to isolate the coal powder, and the barrier layer 11 may at least completely fill the leak point 21.
[0032] In the above embodiment, the substrate 10 is provided with a barrier layer 11 on the side facing the pipeline 2, and the barrier layer 11 is arranged opposite to the leak point 21 of the pipeline 2. When the substrate 10 is fixed to the outer peripheral wall of the pipeline 2, the barrier layer 11 can at least completely fill the leak point 21, so that the barrier layer 11 can fill the leak point 21 to form a plug, thereby achieving a repair effect on the pipeline 2, thereby preventing the coal powder from continuing to leak out of the pipeline 2 through the leak point 21. In this process, the repair assembly 1 can be installed and fixed from the outside of the pipeline 2, without the need for maintenance personnel to enter the inside of the pipeline 2, which is convenient for installation and reduces safety hazards.
[0033] According to some embodiments, reference Figure 1 The edge of the substrate 10 may be provided with a fixing portion 101, the fixing portion 101 may be fixedly connected to the outer peripheral wall of the pipe 2, and the substrate 10 may be configured to seal the substrate 10 and the pipe 2 when the fixing portion 101 is fixedly connected to the outer peripheral wall of the pipe 2. In this embodiment, the fixing portion 101 may extend toward the outer peripheral wall of the pipe 2 at a certain inclination angle relative to the edge of the substrate 10, forming a chamfered structure with an angle of not less than 135° with the substrate 10, so that the connection between the substrate 10 and the outer peripheral wall of the pipe 2 has a smooth transition and good stability.
[0034] It should be noted that the embodiment of the present disclosure does not specifically limit the fixing method of the fixing portion 101 and the outer peripheral wall of the pipe 2, including but not limited to the use of welding, bonding, clamping or bolting, etc., which will not be described in detail here. Among them, when the fixing portion 101 and the outer peripheral wall of the pipe 2 are fixed by welding, the fixing portion 101 with a chamfered structure can extend the welding distance of the substrate 10, which is convenient for operation, and the docking width can be adaptively changed according to the weight or size of the substrate 10, thereby improving the installation stability of the substrate 10.
[0035] At the same time, after the substrate 10 is fixed to the outer wall of the pipeline 2 by the fixing part 101, a seal can be formed between the substrate 10 and the pipeline 2, so that a second sealing layer can be formed between the substrate 10 and the outer wall of the pipeline 2 on the basis of the first sealing layer formed by filling the barrier layer 11 to the leakage point 21, thereby effectively improving the protection effect against coal powder leakage, and at least after the first sealing layer fails, the second sealing layer can continue to provide a plugging effect on the leakage point 21 of the pipeline 2, thereby extending the overall service life of the repair component 1.
[0036] In some embodiments, reference Figure 1, the surface of the barrier layer 11 located inside the pipe 2 can be adapted to the roundness of the inner wall of the pipe 2. In this embodiment, the barrier layer 11 can be at least completely filled into the leak point 21 after the substrate 10 is fixed to the outer peripheral wall of the pipe 2, and the surface of the barrier layer 11 filled into the leak point 21 can be kept rounded with the inner wall of the pipe 2, so that the transition between the barrier layer 11 and the inner wall of the pipe 2 at the edge of the leak point 21 is smooth, avoiding obvious partitions or gaps, thereby preventing coal powder from gradually accumulating at the transition between the two, deepening the impact damage to the transition, and affecting the service life and repair effect of the repair component 1. Specifically, the thickness of the barrier layer 11 and the thickness of the connecting layer between the barrier layer 11 and the substrate 10 can be adjusted, and adaptively matched with the thickness of the pipe wall to achieve the rounding effect of the above-mentioned transition.
[0037] For example, refer to Figures 1 to 3 The barrier layer 11 may include a plurality of barrier elements 111, and the plurality of barrier elements 111 may be sequentially attached to the side of the substrate 10 facing the pipeline 2. The surface area of the barrier element 111 facing the pipeline 2 is much smaller than the surface area of the substrate 10 facing the pipeline 2. When the barrier elements 111 are sequentially attached to the substrate 10, a barrier layer 11 with a certain curvature may be formed, and the curvature of the barrier layer 11 is adapted to the curvature of the pipe wall of the pipeline 2, so that the barrier layer 11 composed of the plurality of barrier elements 111 can keep the surface of the barrier layer 11 and the inner wall of the pipeline 2 round after being filled to the leak point 21. At the same time, the plurality of barrier elements 111 are tightly connected without gaps or faults, which can effectively resist the impact damage of coal powder, prevent the accumulation of coal powder, and have a good repair and protection effect on the leak point 21.
[0038] In some embodiments, the barrier 111 may be wear-resistant ceramics. Preferably, the wear-resistant ceramics may be ceramics with an aluminum dioxide content of more than 95% to have better wear resistance and impact resistance.
[0039] A second aspect of the present disclosure provides a method for repairing a coal powder transport pipeline, wherein the repair method may include: Step S101, obtaining the size of the leak point 21 of the pipeline 2.
[0040] Step S102 , selecting a substrate 10 for covering the leak point 21 .
[0041] Step S103 , fixing the barrier layer 11 on the side of the substrate 10 facing the pipe 2 , and making the barrier layer 11 at least completely fill the leak point 21 .
[0042] Step S104 , fixing the substrate 10 on the outer peripheral wall of the pipe 2 .
[0043] In the above embodiment, the shape and size of the leak point 21 can be confirmed from the inside by using a detection tool such as an in-pipe probe or directly confirmed from the outside of the pipe 2, and the size information of the leak point 21 can be obtained, and then the substrate 10 can be selected so that the substrate 10 can completely cover the leak point 21, and then the barrier layer 11 can be fixed on the side of the substrate 10 facing the pipe 2, and the barrier layer 11 can be satisfied when the substrate 10 and the outer peripheral wall of the pipe 2 are attached to at least completely fill the leak point 21, so as to achieve the filling and plugging of the leak point 21. Then, the filling degree of the barrier layer 11 can be confirmed again by using a detection tool, and the substrate 10 can be fixed on the outer peripheral wall of the pipe 2 after meeting the plugging requirements, thereby completing the plugging and repair of the leak point 21 by the repair component 1. Among them, the entire installation process of the repair component 1 can be operated entirely on the outside of the pipe 2, without requiring the staff to enter the pipe to operate, reducing the safety hazards during the operation in the pipe, and the overall installation of the repair component 1 is convenient, and the plugging effect can meet expectations.
[0044] For example, the step of obtaining the size of the leak point 21 of the pipeline 2 in S101 may include: Step S1011, obtaining the first extreme value size of the leak point 21 along the circumference of the pipeline 2.
[0045] Step S1012, obtaining the second extreme value size of the leak point 21 along the axial direction of the pipeline 2.
[0046] Meanwhile, the step of selecting the substrate 10 in S102 may include: Step S1021 , selecting a rectangular plate according to the first extreme size and the second extreme size, wherein one side length of the rectangular plate is greater than the first extreme size, and the other side length is greater than the second extreme size.
[0047] Step S1022 , bending the rectangular plate into a shape suitable for the outer peripheral wall of the pipe 2 .
[0048] In the above embodiment, the first extreme size of the leak point 21 can be defined as the maximum arc length of the leak point 21 extending along the circumference of the pipeline 2, the second extreme size of the leak point 21 can be positioned as the maximum length of the leak point 21 extending along the axial direction of the pipeline 2, and the selected rectangular plate can be bent into a shape suitable for the outer peripheral wall of the pipeline 2 to completely cover the leakage area of the leak point 21 when one side length is greater than the first extreme size of the leak point 21 and the other side length is greater than the second extreme size of the leak point 21. Among them, the rectangular plate is a conventional plate material, which is easy to obtain and easy to cut according to the size of the leak point 21. The selection of the rectangular plate for the substrate 10 can simplify the process and reduce the production cost.
[0049] In other embodiments, the arc length of the arc edge of the substrate 10 may be greater than the first extreme size of the leakage point 21 and less than half the radius of the pipe 2, and the straight edge of the substrate 10 may be greater than the second extreme size of the leakage point 21 and between half and two-thirds of the arc length of the arc edge of the substrate 10, so that the substrate 10 has a more suitable installation size while satisfying the condition that the leakage point 21 can be covered, to prevent the substrate 10 from being too large to be conveniently positioned and installed on the outer wall of the pipe 2.
[0050] For example, the step of fixing the barrier layer 11 in S103 may include: Step S1031 , a plurality of blocking members 111 are sequentially bonded and fixed on a side of the substrate 10 facing the pipeline 2 .
[0051] In the above embodiment, a plurality of barrier members 111 can be sequentially adhered to the side of the substrate 10 facing the pipeline 2 to form a barrier layer 11, and the plurality of barrier members 111 are tightly connected without gaps or faults, which can effectively resist the impact damage of coal powder, prevent the accumulation of coal powder, and have a good effect of repairing and protecting the leakage point 21.
[0052] In some embodiments, the step of fixing the barrier layer 11 in S103 may further include: Step S1032 , making the surface of the barrier layer 11 located inside the pipe 2 suitable for rounding the inner wall of the pipe 2 .
[0053] In the above embodiment, the barrier layer 11 has a certain curvature, and the curvature of the barrier layer 11 is adapted to the curvature of the pipe wall of the pipeline 2, so that the surface of the barrier layer 11 and the inner wall of the pipeline 2 can remain round after the barrier layer 11 is filled to the leakage point 21, so that the connection between the surface of the barrier layer 11 located in the pipeline 2 and the inner wall surface of the pipeline 2 is relatively smooth, avoiding continuous impact and wear of the coal powder on the uneven connection between the two, reducing the protective effect of the barrier layer 11, and reducing the service life of the repair component 1.
[0054] For example, the step of fixing the substrate 10 on the outer peripheral wall of the pipe 2 in S104 may include: Step S1041 , the substrate 10 is fixedly connected to the outer peripheral wall of the pipe 2 through the fixing portion 101 at the edge, and a seal is formed between the substrate 10 and the pipe 2 .
[0055] In the above embodiment, a fixing portion 101 may be provided at the edge of the substrate 10, and the fixing portion 101 may be integrally provided with the substrate 10, and the edge of the fixing portion 101 may be fixed to the outer peripheral wall of the pipe 2 by welding, so that the connection is reliable, thereby ensuring a stable connection between the substrate 10 and the pipe 2.
[0056] At the same time, after the substrate 10 is fixed to the outer wall of the pipeline 2 by the fixing part 101, a seal can be formed between the substrate 10 and the pipeline 2, so that a second sealing layer can be formed between the substrate 10 and the outer wall of the pipeline 2 on the basis of the first sealing layer formed by filling the barrier layer 11 to the leakage point 21, thereby effectively improving the protection effect against coal powder leakage, and at least after the first sealing layer fails, the second sealing layer can continue to provide a plugging effect on the leakage point 21 of the pipeline 2, thereby extending the overall service life of the repair component 1.
[0057] In other embodiments, the fixing portion 101 may extend toward the outer wall of the pipe 2 at a certain inclination angle relative to the edge of the substrate 10, forming a chamfered structure with an angle of not less than 135° with the substrate 10, so that the connection between the substrate 10 and the outer wall of the pipe 2 has a smooth transition and better stability.
[0058] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0060] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A repair assembly for a coal powder transport pipeline, characterized in that: The repair component comprises: a base plate for fixing to the outer peripheral wall of the pipeline to cover the leak point of the pipeline; and A barrier layer is fixed to a side of the substrate facing the pipeline and is used to isolate coal powder, wherein the barrier layer is at least completely filled in the leakage point.
2. The repair assembly according to claim 1, characterized in that: A fixing portion is disposed at an edge of the substrate, the fixing portion is fixedly connected to the outer peripheral wall of the pipe, and the substrate is configured to seal between the substrate and the pipe when the fixing portion is fixedly connected to the outer peripheral wall of the pipe.
3. The repair assembly according to claim 1, characterized in that The surface of the barrier layer located inside the pipe is suitable for being rounded with the inner wall of the pipe.
4. The repair assembly according to any one of claims 1 to 3, characterized in that: The barrier layer includes a plurality of barrier elements, and the plurality of barrier elements are sequentially attached to a side of the substrate facing the pipeline.
5. The repair assembly according to claim 4, characterized in that: The barrier is made of wear-resistant ceramic.
6. A method for repairing a coal powder transport pipeline, characterized in that: The repair method comprises: Obtaining the size of the leak point of the pipeline; Selecting a substrate, wherein the substrate is used to cover the leakage point; Fixing a barrier layer on a side of the substrate facing the pipe, and making the barrier layer at least completely fill the leak point; and The base plate is fixed on the outer peripheral wall of the pipe.
7. The repair method according to claim 6, characterized in that: The step of obtaining the size of the leak point of the pipeline comprises: Obtaining a first extreme value size of the leak point along the circumference of the pipeline; and Obtain the second extreme value size of the leak point along the axial direction of the pipeline, The step of selecting a substrate comprises: Selecting a rectangular plate according to the first extreme size and the second extreme size, wherein one side of the rectangular plate is longer than the first extreme size and another side is longer than the second extreme size; and The rectangular plate is bent into a shape suitable for the outer peripheral wall of the pipe.
8. The repair method according to claim 6, characterized in that: The step of fixing the barrier layer comprises: A plurality of barrier members are sequentially bonded and fixed to a side of the substrate facing the pipeline.
9. The repair method according to claim 6, characterized in that: The step of fixing the barrier layer comprises: The surface of the barrier layer located inside the pipe is adapted to be rounded with the inner wall of the pipe.
10. The repair method according to claim 6, characterized in that: The step of fixing the substrate on the outer peripheral wall of the pipeline comprises: The substrate is fixedly connected to the outer peripheral wall of the pipeline through the fixing portion of the edge, and a seal is formed between the substrate and the pipeline.