Boiler heating surface blowing damage prevention device and boiler

Abstract

The utility model relates to a boiler heating surface blowing damage prevention device and a boiler, the boiler heating surface blowing damage prevention device comprises a first protection part and a second protection part, the first protection part is used for being arranged at the intersection of a horizontal pipe of the boiler heating surface and a vertical pipe of the boiler heating surface and extending in the vertical direction; the first protection part comprises a first plate body and a second plate body which are connected with each other, the first plate body is used for being connected with the peripheral face of the vertical pipe, the second plate body is used for being connected with the peripheral face of the horizontal pipe, and the first plate body and the second plate body are arranged at an angle. The second protection part extends in the horizontal direction, the second protection part and the first protection part are arranged in the vertical direction, and the second protection part is constructed to be capable of covering gaps between the first protection part and the horizontal pipe and between the first protection part and the vertical pipe in the vertical direction. The first protection piece can protect the horizontal pipe and the vertical pipe from being blown and damaged by smoke and steam vortexes, and the second protection piece can protect gaps between the first protection piece and the horizontal pipe and the vertical pipe from being blown and damaged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of boiler heating surfaces, and specifically, to a device for preventing blow damage to a boiler heating surface and a boiler. Background Art

[0002] During the operation of the heating surface of a boiler, on the one hand, it is subject to fly ash erosion in the flue gas, and on the other hand, it will also be damaged by the steam of the soot blower, resulting in a decrease in strength. Especially at the intersection of the horizontal pipe and the vertical pipe of the heating surface, it is easy to form a flue gas corridor or even a vortex, which accelerates erosion, reduces the service life of the pipe, and increases the risk of pipe leakage. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a device for preventing blow damage to a boiler heating surface and a boiler to solve the above technical problems.

[0004] To achieve the above purpose, as the first aspect of the present disclosure, a device for preventing blow damage to a boiler heating surface is provided, including:

[0005] A first protective member for being disposed at the intersection of the horizontal pipe and the vertical pipe of the boiler heating surface and extending in the vertical direction. The first protective member includes a first plate body and a second plate body connected to each other. The first plate body is used to connect with the outer peripheral surface of the vertical pipe, the second plate body is used to connect with the outer peripheral surface of the horizontal pipe, and the first plate body and the second plate body are arranged at an angle.

[0006] A second protective member extending in the horizontal direction and arranged with the first protective member in the vertical direction. The second protective member is configured to be able to cover the gap between the first protective member and the horizontal pipe and the vertical pipe in the vertical direction.

[0007] Optionally, the projection of the second protective member in the vertical direction covers the projection of the first protective member in the vertical direction.

[0008] Optionally, the second protective member is formed as a protective plate, and an arc-shaped groove is formed on the protective plate. The groove wall of the arc-shaped groove is attached to and connected with the outer peripheral surface of the vertical pipe, and the side edge of the protective plate is connected with the outer peripheral surface of the horizontal pipe.

[0009] Optionally, the side edge of the protective plate includes an opposite first side edge and a second side edge. The first side edge and the second side edge are respectively used to connect with two horizontal pipes located on both sides of the vertical pipe, and the distance between the first side edge and the second side edge is greater than or equal to the distance between the central axes of the two horizontal pipes.

[0010] Optionally, the groove wall of the arc-shaped groove is fully welded to the outer peripheral surface of the vertical pipe, and the side edge of the protection plate is spot welded to the outer peripheral surface of the horizontal pipe.

[0011] Optionally, a plurality of through holes are formed in the second protection member, and the projections of the plurality of through holes in the vertical direction avoid the gaps between the first protection member and the horizontal pipe and the vertical pipe.

[0012] Optionally, the length of the first protection member in the vertical direction is greater than or equal to the diameter of the horizontal pipe.

[0013] Optionally, there are two second plate bodies, and the two second plate bodies are located on opposite sides of the first plate body. The two second plate bodies are respectively used to connect to the two horizontal pipes located on both sides of the vertical pipe, and the first plate body and the two second plate bodies together enclose a groove with an opening facing away from the vertical pipe.

[0014] Optionally, the included angle between the first plate body and the second plate body is an obtuse angle.

[0015] As a second aspect provided by the present disclosure, the present disclosure provides a boiler, including a boiler heating surface and the above-mentioned boiler heating surface anti-blowing damage device. The boiler heating surface includes a vertical pipe extending in the vertical direction and a horizontal pipe extending in the horizontal direction.

[0016] Through the above technical solution, the first plate body and the second plate body of the first protection member are respectively connected to the outer peripheral surfaces of the horizontal pipe and the vertical pipe of the heating surface, so that the first protection member can cover the horizontal pipe, the vertical pipe and the gap at the intersection of the horizontal pipe and the vertical pipe, protecting the horizontal pipe and the vertical pipe from being damaged by the blowing of flue gas and steam eddies.

[0017] In addition, since the second protection member is arranged at one end of the first protection member in the vertical direction and covers the gap between the first protection member and the horizontal pipe and the vertical pipe, it can prevent the flue gas or steam flowing in the vertical direction from blowing into the gap between the first protection member and the horizontal pipe and the vertical pipe, thereby further preventing the flue gas and steam from blowing and damaging the horizontal pipe, the vertical pipe and the first protection member connected thereto in the vertical direction, and improving the service life of the boiler heating surface and the boiler heating surface anti-blowing damage device.

[0018] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0020] Figure 1It is a three-dimensional view of a boiler heating surface anti-blowing damage device provided by an embodiment of the present disclosure. Among them, the horizontal pipe and the vertical pipe are also shown;

[0021] Figure 2 It is a three-dimensional view of the first protective member of the boiler heating surface anti-blowing damage device provided by an embodiment of the present disclosure. Among them, the horizontal pipe and the vertical pipe are also shown;

[0022] Figure 3 It is a three-dimensional view of the first protective member of the boiler heating surface anti-blowing damage device provided by an embodiment of the present disclosure ( Figure 2 with a different perspective), among which, the horizontal pipe and the vertical pipe are also shown.

[0023] Explanation of reference numerals

[0024] 100 - Boiler heating surface anti-blowing damage device; 200 - Horizontal pipe; 300 - Vertical pipe; 1 - First protective member; 11 - First plate body; 12 - Second plate body; 13 - Groove; 2 - Second protective member; 21 - Arc-shaped groove; 22 - First side; 23 - Second side; 24 - Through hole. Specific embodiments

[0025] The following will describe the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0026] In the present disclosure, unless otherwise stated, the orientation terms such as "upper, lower" are usually defined based on the normal working state of the heating surface of the boiler. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation of the present disclosure. "Inner, outer" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present disclosure, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connected", "connected to", "installed" 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0028] As the first aspect of the present disclosure, as Figures 1 to 3As shown, the present disclosure provides a boiler heating surface anti-blowing damage device 100, which includes a first protection member 1 and a second protection member 2. Among them, the first protection member 1 is used to be arranged at the intersection of the horizontal pipe 200 of the boiler heating surface and the vertical pipe 300 of the boiler heating surface and extends in the vertical direction. The first protection member 1 includes a first plate body 11 and a second plate body 12 that are connected to each other. The first plate body 11 is used to be connected to the outer peripheral surface of the vertical pipe 300, and the second plate body 12 is used to be connected to the outer peripheral surface of the horizontal pipe 200. The first plate body 11 and the second plate body 12 are arranged at an angle.

[0029] The second protection member 2 extends in the horizontal direction and is arranged vertically with the first protection member 1. The second protection member 2 is configured to be able to cover the gap between the first protection member 1 and the horizontal pipe 200 and the vertical pipe 300 in the vertical direction.

[0030] Through the above technical solution, the first plate body 11 and the second plate body 12 of the first protection member 1 are respectively connected to the outer peripheral surfaces of the horizontal pipe 200 and the vertical pipe 300 of the heating surface, so that the first protection member 1 can cover the horizontal pipe 200, the vertical pipe 300 and the gap at the intersection of the horizontal pipe 200 and the vertical pipe 300, protecting the horizontal pipe 200 and the vertical pipe 300 from being damaged by the blowing of flue gas and steam eddies.

[0031] In addition, since the second protection member 2 is arranged at one end of the first protection member 1 in the vertical direction and covers the gap between the first protection member 1 and the horizontal pipe 200 and the vertical pipe 300, it is possible to prevent the flue gas or steam flowing in the vertical direction from blowing into the gap between the first protection member 1 and the horizontal pipe 200 and the vertical pipe 300, thereby further preventing the flue gas and steam from blowing and damaging the horizontal pipe 200, the vertical pipe 300 and the first protection member 1 connected thereto in the vertical direction, and improving the service life of the boiler heating surface and the boiler heating surface anti-blowing damage device 100.

[0032] Here, it should be noted that the heating surface of the boiler mentioned in the present disclosure refers to a pipe group composed of a plurality of horizontal pipes 200 and vertical pipes 300.

[0033] Optionally, as Figure 1 shown, the projection of the second protection member 2 in the vertical direction covers the projection of the first protection member 1 in the vertical direction. Since there are airflows of flue gas and steam in the vertical direction, in order to cover the gap between the first protection member 1 and the horizontal pipe 200 and the vertical pipe 300, while the first protection member 1 and the second protection member 2 are arranged vertically, making the projection of the second protection member 2 in the vertical direction cover the projection of the first protection member 1 in the vertical direction can reduce the blowing damage of the airflows of steam or flue gas to the first protection member 1 and improve the service life of the boiler heating surface anti-blowing damage device 100.

[0034] To cover the gaps between the first protective member 1 and the horizontal pipe 200 and the vertical pipe 300 as much as possible, optionally, as Figure 1 shown, the second protective member 2 is formed as a protective plate, and an arc-shaped groove 21 is formed on the protective plate. The groove wall of the arc-shaped groove 21 is attached to and connected to the outer peripheral surface of the vertical pipe 300, and the side edge of the protective plate is connected to the outer peripheral surface of the horizontal pipe 200. Since the first protective member 1 is provided at the intersection of the horizontal pipe 200 and the vertical pipe 300, there is a gap between the first protective member 1 and the arc-shaped outer peripheral surface of the vertical pipe 300. The second protective member 2 is constructed as a protective plate, and an arc-shaped groove 21 is formed on the protective plate. The groove wall of the arc-shaped groove 21 is attached to and connected to the outer peripheral surface of the vertical pipe 300, so that the protective plate can cover the gap between the first protective member 1 and the outer peripheral surface of the vertical pipe 300 in the vertical direction, reducing the erosion of steam or flue gas on the connection between the first protective member 1 and the vertical pipe 300. At the same time, since the side edge of the protective plate is connected to the outer peripheral surface of the horizontal pipe 200, the protective plate can also cover the gap between the first protective member 1 and the horizontal pipe 200 in the vertical direction, thereby further protecting the outer peripheral surface of the horizontal pipe 200 on the side close to the first protective member 1 from the erosion of flue gas.

[0035] It can be understood that in the embodiment where the horizontal pipe 200 and the vertical pipe 300 include protective tiles and pipe bodies, the first protective member 1 and the second protective member 2 are respectively connected to the outer side surfaces of the protective tiles, and the pipe body is located inside the protective tiles.

[0036] Optionally, as Figure 1 shown, the side edge of the protective plate includes opposite first side edge 22 and second side edge 23. The first side edge 22 and the second side edge 23 are respectively used to be connected to two horizontal pipes 200 located on both sides of the vertical pipe 300, and the distance between the first side edge 22 and the second side edge 23 is greater than or equal to the distance between the central axes of the two horizontal pipes 200. The heating surface of the boiler may include at least one vertical pipe 300 and two horizontal pipes 200, and the vertical pipe 300 is clamped between the two horizontal pipes 200. The first side edge 22 and the second side edge 23 of the protective plate are respectively connected to the two horizontal pipes 200, and the distance between the first side edge 22 and the second side edge 23 is greater than or equal to the distance between the central axes of the horizontal pipes 200, which can enable the protective plate to cover the opposite two side surfaces of the horizontal pipe 200 and the gap between two adjacent horizontal pipes 200 in the vertical direction, thereby better protecting the horizontal pipe 200 and the first protective member 1 from the erosion of flue gas or steam.

[0037] To improve the connection strength, optionally, the groove wall of the arc-shaped groove 21 is fully welded to the outer peripheral surface of the vertical pipe 300, and the side edge of the protective plate is spot-welded to the outer peripheral surface of the horizontal pipe 200. The full welding connection between the groove wall of the arc-shaped groove 21 and the outer peripheral surface of the vertical pipe 300 can prevent flue gas or steam from entering the gap between the first protective member 1 and the vertical pipe 300 through the gap between the protective plate and the vertical pipe 300, and at the same time can also improve the connection strength between the vertical pipe 300 and the protective plate. The spot-welding connection between the side edge of the protective plate and the outer peripheral surface of the horizontal pipe 200 can reduce the installation difficulty of the protective plate and improve the installation efficiency on the premise of ensuring the connection strength.

[0038] To prevent the second protective member 2 from completely blocking the gas path of the flue gas, optionally, as Figure 1 shown, a plurality of through holes 24 are formed on the second protective member 2, and the projections of the plurality of through holes 24 in the vertical direction avoid the gaps between the first protective member 1 and the horizontal pipe 200 and the vertical pipe 300. The plurality of through holes 24 formed on the second protective member 2 can allow part of the flue gas or steam flowing in the vertical direction to pass through, improve the air flow throughability, and prevent the formation of new eddies. At the same time, since the projections of the plurality of through holes 24 in the vertical direction avoid the gaps between the first protective member 1 and the horizontal pipe 200 and the vertical pipe 300, it can be ensured that the air flow passing through the through holes 24 will not blow and damage the first protective member 1, the horizontal pipe 200 and the vertical pipe 300, thereby improving the service life of the boiler heating surface anti-blowing device 100.

[0039] Optionally, as Figure 1 shown, the length of the first protective member 1 in the vertical direction is greater than or equal to the diameter of the horizontal pipe 200. The first protective member 1 extends in the vertical direction, and the first plate body 11 is connected to the vertical pipe 300. The horizontal pipe 200 is located on one side of the vertical pipe 300, and the second plate body 12 is connected to the outer peripheral surface of the horizontal pipe 200, so that the length of the first protective member 1 in the vertical direction is greater than or equal to the diameter of the horizontal pipe 200. Such a setting also makes the lengths of the first plate body 11 and the second plate body 12 in the vertical direction greater than the length of the joint at the intersection of the horizontal pipe 200 and the vertical pipe 300 in the vertical direction, so that the first protective member 1 can cover the horizontal pipe 200 and the joint between the horizontal pipe 200 and the vertical pipe 300, thereby protecting the horizontal pipe 200 and the vertical pipe 300 from being blown and damaged by the eddies formed by steam or flue gas. At the same time, it can also cover the outer peripheral surfaces of the horizontal pipe 200 and the vertical pipe 300 facing the first protective member 1 side to protect the outer peripheral surfaces from being blown and damaged by the eddies.

[0040] To improve the protection effect, optionally, as Figure 2 and Figure 3As shown, there are two second plate bodies 12, and the two second plate bodies 12 are located on opposite sides of the first plate body 11. The two second plate bodies 12 are respectively used to connect with two horizontal pipes 200 located on both sides of the vertical pipe 300. The first plate body 11 and the two second plate bodies 12 jointly enclose a groove 13 with an opening facing away from the vertical pipe 300. Since eddy currents are likely to be formed by flue gas or steam at the intersection of two adjacent horizontal pipes 200 and the vertical pipe 300, the groove 13 formed by the first plate body 11 and the two second plate bodies 12 can separate the eddy currents from the vertical pipe 300 and the horizontal pipes 200, and confine the eddy currents within the groove 13, thereby protecting the horizontal pipes 200 and the vertical pipe 300 from being damaged by the eddy currents.

[0041] Optionally, as Figure 3 shown, the included angle between the first plate body 11 and the second plate body 12 is an obtuse angle. Since the first plate body 11 and the second plate body 12 are respectively connected to the vertical pipe 300 and the horizontal pipe 200 so that the first protective member 1 can cover the intersection of the vertical pipe 300 and the horizontal pipe 200, and the included angle between the first plate body 11 and the second plate body 12 is set as an obtuse angle, the second plate body 12 can be made to fit as closely as possible to the outer peripheral surface of the horizontal pipe 200, reducing the gap between the second plate body 12 and the outer peripheral surface of the horizontal pipe 200, thereby reducing the flue gas or steam that enters the gap between the first protective member 1 and the horizontal pipe 200 and the vertical pipe 300 through the gap between the second plate body 12 and the outer peripheral surface of the horizontal pipe 200, and enhancing the protection effect of the first protective member 1.

[0042] As a second aspect of the present disclosure, the present disclosure provides a boiler, including a boiler heating surface and the above-mentioned boiler heating surface anti-blowing damage device 100. The boiler heating surface includes a vertical pipe 300 extending in the vertical direction and a horizontal pipe 200 extending in the horizontal direction.

[0043] Optionally, the vertical pipe 300 and the horizontal pipe 200 include a pipe body and a protective tile. The protective tile covers the outer peripheral surface of the pipe body, and the pipe body is located inside the protective tile. Both the first protective member 1 and the second protective member 2 are welded to the outer side surface of the protective tile.

[0044] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0045] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.

[0046] In addition, any combination can be made among various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A device for preventing the heating surface of a boiler from being damaged by blowing, characterized in that: include: A first protective member, which is used to be arranged at the intersection of the horizontal tube of the boiler heating surface and the vertical tube of the boiler heating surface and extends in the vertical direction, the first protective member includes a first plate body and a second plate body connected to each other, the first plate body is used to be connected to the outer peripheral surface of the vertical tube, the second plate body is used to be connected to the outer peripheral surface of the horizontal tube, and the first plate body and the second plate body are arranged at an angle; The second protective member extends in the horizontal direction and is arranged with the first protective member in the vertical direction. The second protective member is configured to cover the gap between the first protective member and the horizontal pipe and the vertical pipe in the vertical direction.

2. The boiler heating surface anti-blow damage device according to claim 1, characterized in that: A projection of the second protection member along the vertical direction covers a projection of the first protection member along the vertical direction.

3. The boiler heating surface anti-blow damage device according to claim 1, characterized in that: The second protection member is formed as a protection plate, and an arc-shaped groove is formed on the protection plate. The groove wall of the arc-shaped groove is in contact with and connected to the outer peripheral surface of the vertical tube, and the side edge of the protection plate is connected to the outer peripheral surface of the horizontal tube.

4. The boiler heating surface blow-off prevention device according to claim 3, characterized in that: The side edges of the protective plate include a first side edge and a second side edge that are opposite to each other, and the first side edge and the second side edge are respectively used to connect with the two horizontal tubes located on both sides of the vertical tube, and the distance between the first side edge and the second side edge is greater than or equal to the distance between the central axes of the two horizontal tubes.

5. The boiler heating surface anti-blow damage device according to claim 3, characterized in that: The groove wall of the arc groove is fully connected to the outer peripheral surface of the vertical tube by welding, and the side edge of the protection plate is spot-welded to the outer peripheral surface of the horizontal tube.

6. The boiler heating surface blow-off prevention device according to claim 1, characterized in that: A plurality of through holes are formed on the second protection member, and projections of the plurality of through holes along the vertical direction avoid gaps between the first protection member and the horizontal tube and the vertical tube.

7. The boiler heating surface anti-blowout device according to any one of claims 1 to 6, characterized in that: The length of the first protective member in the vertical direction is greater than or equal to the diameter of the horizontal tube.

8. The boiler heating surface anti-blowout device according to any one of claims 1 to 6, characterized in that: There are two second plates, which are located on opposite sides of the first plate. The two second plates are respectively used to connect with the two horizontal tubes located on both sides of the vertical tube. The first plate and the two second plates together form a groove with an opening facing away from the vertical tube.

9. The boiler heating surface anti-blowout device according to any one of claims 1 to 6, characterized in that: The angle between the first plate body and the second plate body is an obtuse angle.

10. A boiler, characterized in that: It comprises a boiler heating surface and a boiler heating surface anti-blowout device according to any one of claims 1 to 9, wherein the boiler heating surface comprises vertical tubes extending in a vertical direction and horizontal tubes extending in a horizontal direction.

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