Pipeline protection device
By installing the height differences of first and second protective facilities on the boiler pipeline of the thermal power plant, the problem of the suspension tube caused by the fly ash wear in the airflow of the separator exported to the flue airflow, realizing the reduction of airflow and flying ash pair pairs The wear of the pipeline avoids the risk of pipeline explosion.
Patent Information
- Application Number
- CN202420519109.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-15
AI Technical Summary
In the circulating fluidized bed boiler of the thermal power plant, the fly ash mixed in the airflow of the separator outlet flue wears, causing the economizer hanging pipe to explode, causing the boiler to shut down and affect power production and steam supply.
Design a pipeline protective device, including multiple groups of first protective and multiple groups of second protectives. It is distributed on the outer wall along the direction of the pipeline body. Reduce the impact and wear of the air flow, and make the fly ash shock protective protection reduce the wear of the pipeline.
By reducing the impact and wear of pipelines on the pipeline of the airflow and fly ash, the problem of the pipeline explosion can be effectively avoided, and the problem of flying ash wear in the airflow of the separator exported to the flue of the exporter causes the hanging tube.
Smart Images
Figure CN222416640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline protection, in particular to a pipeline protection device. Background Art
[0002] The economizer hanging pipe of the circulating fluidized bed (CFB) boiler in a thermal power plant is located in the vertical shaft flue at the rear of the boiler. Due to the high air flow velocity in the separator outlet flue, the fly ash mixed in the air flow wears and causes the economizer hanging pipe to burst and leak, resulting in boiler shutdown, affecting power production and steam supply.
[0003] Therefore, how to prevent the economizer hanging tube from bursting due to the wear of fly ash mixed in the airflow of the separator outlet flue is one of the important problems to be solved in this field. Utility Model Content
[0004] The utility model aims to provide a pipeline protection device to solve the problem of bursting of hanging pipes caused by wear of fly ash mixed in the airflow of the flue at the separator outlet in the prior art.
[0005] The utility model provides a pipeline protection device, comprising: a pipeline body, a plurality of groups of first protection pieces and a plurality of groups of second protection pieces;
[0006] Multiple groups of first protective elements and multiple groups of second protective elements are distributed on the outer wall of the pipeline body along the circumferential direction of the pipeline body, each group of first protective elements is spaced apart from each group of second protective elements, and any first protective element has a height difference with any second protective element.
[0007] Preferably, each group of first protective elements and each group of second protective elements are arranged along the axial direction of the pipe body.
[0008] Preferably, the angle between each group of first protective elements and each adjacent group of second protective elements in the circumferential direction of the pipe body is 45°.
[0009] Preferably, the first protective member and the second protective member are both wear-resistant protective members.
[0010] Preferably, the first protective member and the second protective member are both high temperature resistant protective members.
[0011] Preferably, the first protection members in the same group are arranged at equal intervals along the axial direction of the pipe body; and the second protection members in the same group are arranged at equal intervals along the axial direction of the pipe body.
[0012] Preferably, the first protective member and the second protective member are evenly arranged along the circumferential direction of the pipeline body.
[0013] Preferably, the distribution density of the first protection elements is the same as the distribution density of the second protection elements.
[0014] Preferably, the first protective member and the second protective member are both columnar protective members.
[0015] Preferably, the first protection member and the second protection member are both made of 16Cr 20 Ni 14 Si2 material.
[0016] Compared with the prior art, in the pipeline protection device provided by the utility model, multiple groups of first protective members and multiple groups of second protective members are arranged on the outer side wall of the pipeline body along the circumferential direction of the pipeline body, and each group of first protective members is spaced apart from each group of second protective members. Based on this, any first protective member has a height difference with any second protective member. The height difference between the first protective member and the second protective member can be used to tamper the airflow in the boiler, thereby reducing the impact and wear of the airflow in the boiler on the pipeline body. At the same time, each group of first protective members is spaced apart from each group of second protective members, so that the fly ash mixed in the airflow in the boiler can impact the first protective member and the second protective member as the airflow flows, thereby reducing the impact and wear of the fly ash mixed in the airflow in the boiler on the pipeline body. On this basis, the impact and wear on the pipeline body are reduced, which can effectively avoid the problem of pipe bursting of the pipeline body, and effectively solve the problem of pipe bursting caused by the wear of fly ash mixed in the airflow in the separator outlet flue in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0018] Figure 1 A front view of a pipeline protection device according to an exemplary embodiment of the present invention is shown;
[0019] Figure 2 A partial view of a pipeline protection device according to an exemplary embodiment of the present invention is shown;
[0020] Figure 3 A top view of a pipe protection device according to an exemplary embodiment of the present invention is shown.
[0021] Reference numerals:
[0022] 101 - first protective element, 102 - second protective element, 103 - pipeline body. DETAILED DESCRIPTION
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.
[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] The economizer hanging pipe of the circulating fluidized bed (CFB) boiler in a thermal power plant is located in the vertical shaft flue at the rear of the boiler. Due to the high air flow velocity in the separator outlet flue, the fly ash mixed in the air flow wears and causes the economizer hanging pipe to burst and leak, resulting in boiler shutdown, affecting power production and steam supply.
[0029] Therefore, how to prevent the economizer hanging tube from bursting due to the wear of fly ash mixed in the airflow of the separator outlet flue is one of the important problems to be solved in this field.
[0030] Based on this, in order to solve the above problems, the purpose of the present invention is to provide a pipeline protection device to solve the problem of bursting of hanging pipes caused by wear of fly ash mixed in the airflow of the separator outlet flue in the prior art.
[0031] Figure 1 A front view of a pipeline protection device according to an exemplary embodiment of the present invention is shown. Figure 2 A partial view of a pipeline protection device according to an exemplary embodiment of the present utility model is shown. Figure 1-2 As shown, the pipeline protection device provided by the exemplary embodiment of the utility model includes: a pipeline body 103, multiple groups of first protection members 101 and multiple groups of second protection members 102; the multiple groups of first protection members 101 and the multiple groups of second protection members 102 are distributed on the outer wall of the pipeline body 103 along the circumferential direction of the pipeline body 103, each group of first protection members 101 is spaced apart from each group of second protection members 102, and any first protection member 101 has a height difference with any second protection member 102.
[0032] In actual applications, in the pipeline protection device provided by the utility model, multiple groups of first protective members 101 and multiple groups of second protective members 102 are arranged on the outer wall of the pipeline body 103 along the circumferential direction of the pipeline body 103. It can be understood that the above-mentioned first protective members 101 and the second protective members 102 can be connecting members such as pins and bolts, which are not specifically listed here. Each group of first protective members 101 is arranged at intervals from each group of second protective members 102. Based on this, any first protective member 101 has a height difference with any second protective member 102. It should be understood that the height of the above-mentioned first protective member 101 and the height of the second protective member 102 are the heights of the protective members along the radial direction of the pipeline body. Any first protective member 101 has a height difference with any second protective member 102, which can change the flow direction of the airflow and slow down the flow speed of the airflow, thereby reducing the wear on the pipeline body. Therefore, the height difference between the first protective member 101 and the second protective member 102 can be used to control the airflow in the boiler. The turbulence reduces the impact and wear of the airflow in the boiler on the pipe body 103. At the same time, each group of first protective members 101 and each group of second protective members 102 are spaced apart, so that the fly ash mixed in the airflow in the boiler can impact the first protective member 101 and the second protective member 102 as the airflow flows, thereby reducing the impact and wear of the fly ash mixed in the airflow in the boiler on the pipe body 103. On this basis, the impact and wear on the pipe body 103 are reduced, and the problem of pipe bursting of the pipe body 103 can be effectively avoided, which effectively solves the problem of pipe bursting caused by the wear of fly ash mixed in the airflow in the separator outlet flue in the prior art.
[0033] For example, Figure 2 As shown, each group of first protective members 101 and each group of second protective members 102 are arranged along the axial direction of the pipe body 103. It can be understood that the first protective members 101 and the second protective members 102 are welded to the pipe body 103 or can be pasted to the pipe body 103, which will not be elaborated here.
[0034] For example, Figure 3 A top view of a pipeline protection device according to an exemplary embodiment of the present utility model is shown. Figure 3 As shown, the angle between each group of first protective members 101 and each adjacent group of second protective members 102 in the circumferential direction of the pipe body 103 is 45°, and the angle between two adjacent groups of protective members is set at 45°, which effectively ensures that the first protective members 101 and the second protective members 102 are evenly stressed on the pipe body 103, ensures even stress on the pipe body 103, and avoids deformation, damage, and other problems of the pipe body 103 due to uneven stress.
[0035] For example, the first protective member 101 and the second protective member 102 are both wear-resistant protective members. The first protective member 101 and the second protective member 102 are both high temperature resistant protective members. For example, the first protective member 101 and the second protective member 102 may be ∮8 mm and made of 16Cr 20 Ni 14 Si2, a pin with a height of 25 mm. The first protective member 101 and the second protective member 102 are high temperature resistant and wear resistant protective members, which can prevent the airflow in the boiler from damaging the protective members. At the same time, they can also reduce the wear of the protective members due to fly ash in the airflow, thereby reducing the replacement frequency of the protective members.
[0036] For example, Figure 2 As shown, the first protection members 101 in the same group are arranged at equal intervals along the axial direction of the pipe body 103 ; the second protection members 102 in the same group are arranged at equal intervals along the axial direction of the pipe body 103 .
[0037] In practical applications, such as Figure 2 As shown, the above-mentioned protective members are arranged at equal intervals along the axial direction of the pipe body 103. It can be understood that the above-mentioned first protective member 101 and the second protective member 102 are arranged at equal intervals along the axial direction of the pipe body 103. The equal intervals ensure that the first protective member 101 and the second protective member 102 are subjected to uniform force on the pipe body 103, thereby avoiding the problem of damage to the pipe body 103 due to uneven force.
[0038] For example, Figure 2As shown, the first protective member 101 and the second protective member 102 are evenly arranged along the circumferential direction of the pipe body 103. It can be understood that the even arrangement between two adjacent protective members can ensure that the first protective member 101 and the second protective member 102 are evenly stressed on the pipe body 103, thereby avoiding the problem of damage to the pipe body 103 due to uneven stress.
[0039] Exemplarily, the density of the first protective member 101 is the same as the density of the second protective member 102. It should be understood that the first protective member 101 and the second protective member 102 are arranged on the pipe body 103 in the same number, and the first protective member 101 and the second protective member 102 are both columnar protective members, which can better guide the airflow and reduce the friction and wear between the airflow and the protective members.
[0040] At the same time, a high temperature resistant plastic shell is also provided around the pipe body 103. The plastic shell has the advantages of high temperature resistance and wear resistance. It is attached around the pipe body 103 and can fully protect the pipe wall of the hanging pipe pipe body 103 from being worn. The maximum temperature of the plastic shell is 1650°C, and its wear resistance is less than or equal to 6 cm. 3 .
[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A pipeline protection device, characterized in that: include: A pipeline body, a plurality of groups of first protective members, and a plurality of groups of second protective members; Multiple groups of the first protective members and multiple groups of the second protective members are distributed on the outer wall of the pipe body along the circumferential direction of the pipe body, each group of the first protective members is spaced apart from each group of the second protective members, and any one of the first protective members has a height difference with any one of the second protective members.
2. The pipeline protection device according to claim 1, characterized in that: Each group of the first protective elements and each group of the second protective elements are arranged along the axial direction of the pipe body.
3. The pipeline protection device according to claim 1, characterized in that: An included angle between each group of the first protective elements and each adjacent group of the second protective elements in the circumferential direction of the pipe body is 45°.
4. The pipeline protection device according to claim 1, characterized in that: The first protective member and the second protective member are both wear-resistant protective members.
5. The pipeline protection device according to claim 1, characterized in that: The first protective member and the second protective member are both high temperature resistant protective members.
6. The pipeline protection device according to any one of claims 1 to 5, characterized in that: The first protective members in the same group are arranged at equal intervals along the axial direction of the pipeline body; The second protective members in the same group are arranged at equal intervals along the axial direction of the pipe body.
7. The pipeline protection device according to claim 6, characterized in that: The first protective member and the second protective member are evenly arranged along the circumferential direction of the pipe body.
8. The pipeline protection device according to claim 6, characterized in that: The distribution density of the first protection elements is the same as the distribution density of the second protection elements.
9. The pipeline protection device according to claim 6, characterized in that: The first protection member and the second protection member are both columnar protection members.
10. The pipeline protection device according to claim 6, characterized in that: The first protection member and the second protection member are both made of 16Cr 20 Ni 14 Si2 material.