Shielding device for superheater and superheater
By designing an adjustable shielding device in the boiler superheater, the shielding device includes the first and second shielding plates, solving the steam blowing and eddy wear problems at the connection between the suspension tube and the heating surface tube, extending the service life and adapting Different sizes of superheaters.
Patent Information
- Application Number
- CN202420298796.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-18
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-18
AI Technical Summary
In the superheater of the boiler, the connection between the suspension tube and the heating surface tube is exposed to steam purging for a long time, resulting in blowing and steam vortex wear, which affects service life and normal power generation.
A shading device is designed, including a first shading plate and two oppositely arranged second shading plates, the second shading plate is arranged vertically on the first shading plate, both extending in a vertical direction and adjustable for shading. At the connection between the suspension pipe and the heating surface pipe, avoid direct steam blowing and vortex wear.
It effectively avoids wear at the connection between the suspension tube and the heating surface tube, extends the service life, and adapts to different sizes of superheaters through PTFE coating and adjustable structure.
Smart Images
Figure CN222230526U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of thermal power generation, and in particular to a shielding device for a superheater and a superheater. Background Art
[0002] The superheater of the boiler includes suspension pipes and heating surface pipes. To ensure the normal operation of the superheater, steam soot blowing operations need to be performed on the suspension pipes and heating surface pipes.
[0003] In order to facilitate connection in the related art, no protective structure is set at the connection between the suspension pipe and the heating surface pipe. When exposed to steam blowing for a long time, the surfaces of the suspension pipe and the heating surface pipe at the connection will be damaged by blowing and worn by steam vortex, causing the suspension pipe and the heating surface pipe to become thinner, thereby affecting the service life and normal power generation. Utility Model Content
[0004] The purpose of the present disclosure is to provide a shielding device for a superheater and a superheater to solve the problems of blow damage and wear of steam vortex on the surfaces of hanging pipes and heating surface pipes at the connection in the related art.
[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a shielding device for a superheater, comprising a first shielding plate and two oppositely arranged second shielding plates, wherein the second shielding plates are vertically arranged on the first shielding plate, and the first shielding plate and the second shielding plate extend in the vertical direction respectively and their lengths in the vertical direction are respectively adjustable.
[0006] Optionally, the shielding device further includes a mounting plate, which is disposed at an end of the second shielding plate and is perpendicular to a plate surface of the second shielding plate.
[0007] Optionally, a connecting portion for connecting to a heating surface pipe is provided on the mounting plate.
[0008] Optionally, a polytetrafluoroethylene coating is provided on the plate surface of the first shielding plate and the plate surface of the second shielding plate respectively.
[0009] Optionally, the first shielding plate includes a first plate body and a second plate body extending in the vertical direction respectively, the second plate body is hollow and slidably mounted on the first plate body, and the shielding device also includes a first locking structure for fixing the first plate body and the second plate body to adjust the length of the first shielding plate.
[0010] Optionally, the first locking structure includes a plurality of first positioning holes spaced apart on the first plate body and a plurality of first mounting holes spaced apart on the second plate body, the first mounting holes corresponding to the positions of the first positioning holes, and the first plate body and the second plate body are connected by a first fastener passing through the first mounting holes and the first positioning holes.
[0011] Optionally, the second shielding plate includes a third plate body and a fourth plate body extending in the vertical direction respectively, the fourth plate body is hollow and slidably mounted on the third plate body, and the shielding device also includes a second locking structure for fixing the third plate body and the fourth plate body to adjust the length of the second shielding plate.
[0012] Optionally, the second locking structure includes a plurality of second positioning holes spaced apart on the third plate body and a plurality of second mounting holes spaced apart on the fourth plate body, the second mounting holes corresponding to the positions of the second positioning holes, and the third plate body and the fourth plate body are connected by second fasteners passing through the second mounting holes and the second positioning holes.
[0013] Optionally, both ends of the first shielding plate in the vertical direction extend beyond the second shielding plate respectively.
[0014] A second object of the present disclosure is to provide a superheater, comprising a suspension tube extending in a vertical direction, a heating surface tube extending in a horizontal direction, and a shielding device for a superheater as described in any one of the above, wherein the heating surface tube is connected to the suspension tube, the heating surface tube comprises two rows respectively arranged on both sides of the suspension tube, the first shielding plate faces the suspension tube and is connected to the suspension tube, and the second shielding plate faces the heating surface tube and is connected to at least one of the heating surface tubes.
[0015] Through the above technical solution, when the shielding device is applied to the superheater, the first shielding plate is used to shield the suspension pipe, and the two second shielding plates arranged opposite to each other are used to shield the heating surface pipes located on both sides of the suspension pipe, and the second shielding plates are arranged vertically on the first shielding plate, so that the connection between the second shielding plate and the first shielding plate can shield the connection between the suspension pipe and the heating surface pipe, thereby avoiding the connection between the suspension pipe and the heating surface pipe from being directly blown by steam, and also avoiding the steam vortex causing the connection between the suspension pipe and the heating surface pipe to be damaged or worn, thereby ensuring the service life of the suspension pipe and the heating surface pipe. At the same time, the lengths of the first shielding plate and the second shielding plate in the vertical direction can be adjusted respectively, so that the shielding device can adapt to superheaters of more sizes.
[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:
[0018] Figure 1 is a schematic structural diagram of a shielding device provided by an exemplary embodiment of the present disclosure at a viewing angle;
[0019] Figure 2 is a schematic structural diagram of a shielding device provided by an exemplary embodiment of the present disclosure at another viewing angle;
[0020] Figure 3 It is a schematic diagram of the use of the shielding device provided in the exemplary embodiment of the present disclosure.
[0021] Description of Reference Numerals
[0022] 1-first shielding plate, 11-first plate body, 111-first positioning hole, 12-second plate body, 2-second shielding plate, 21-third plate body, 211-second positioning hole, 22-fourth plate body, 3-mounting plate, 4-connecting part, 5-suspension pipe, 6-heating surface pipe. DETAILED DESCRIPTION
[0023] 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.
[0024] In the present disclosure, unless otherwise stated, the directional words used generally refer to the normal use state of the shielding device provided by the present disclosure. "Inside and outside" can refer to the inside and outside of the outline of the corresponding component or its location inside or outside the environment, depending on the specific context. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order or importance.
[0025] like Figures 1 to 3 As shown, the present disclosure provides a shielding device for a superheater, comprising a first shielding plate 1 and two oppositely arranged second shielding plates 2, wherein the second shielding plates 2 are vertically arranged on the first shielding plate 1, and the first shielding plate 1 and the second shielding plate 2 extend respectively in the vertical direction and the lengths in the vertical direction are respectively adjustable.
[0026] The superheater of the boiler is usually provided with a suspension pipe 5 extending in the vertical direction and a heating surface pipe 6 extending in the horizontal direction. The heating surface pipe 6 is connected to the suspension pipe 5, and the heating surface pipe 6 includes two rows respectively arranged on both sides of the suspension pipe 5. In order to ensure the normal operation of the superheater, it is necessary to perform steam soot blowing operations on the suspension pipe 5 and the heating surface pipe 6. When the connection between the suspension pipe 5 and the heating surface pipe 6 is exposed to steam blowing for a long time, the connection between the suspension pipe 5 and the heating surface pipe 6 will be damaged by blowing and worn by steam vortex, which will cause the suspension pipe 5 and the heating surface pipe 6 to become thinner, affecting the service life of the suspension pipe 5 and the heating surface pipe 6 and affecting normal power generation. Figure 2 ,by Figure 2 Taking the drawing direction as an example, the vertical direction mentioned above is Figure 2 The up-down direction in the drawing direction is also the extending direction of the suspension pipe 5 in the superheater of the boiler.
[0027] Through the above technical solution, when the shielding device is applied to the superheater, the first shielding plate 1 is used to shield the suspension tube 5, and the two second shielding plates 2 arranged opposite to each other are used to shield the heating surface tubes 6 located on both sides of the suspension tube 5, and the second shielding plates 2 are vertically arranged on the first shielding plate 1, so that the connection between the second shielding plate 2 and the first shielding plate 1 can be shielded at the connection between the suspension tube 5 and the heating surface tube 6, thereby avoiding the connection between the suspension tube 5 and the heating surface tube 6 from being directly blown by steam, and also avoiding the steam vortex causing the connection between the suspension tube 5 and the heating surface tube 6 to be damaged or worn, thereby ensuring the service life of the suspension tube 5 and the heating surface tube 6. At the same time, the lengths of the first shielding plate 1 and the second shielding plate 2 in the vertical direction can be adjusted respectively, so that the shielding device can adapt to superheaters of more sizes.
[0028] In some embodiments, the shielding device may further include a mounting plate 3, which is disposed at the end of the second shielding plate 2 and is perpendicular to the plate surface of the second shielding plate 2. Figure 3 The two second shielding plates 2 can be respectively provided with mounting plates 3, so that the two mounting plates 3 can be respectively overlapped on the heating surface tubes 6 on both sides of the suspension tube 5, and the position of the shielding device is fixed by the mounting plates 3 to prevent the shielding device from falling.
[0029] Continue to refer to Figure 3, the mounting plate 3 may be provided with a connecting portion 4 for connecting to the heated surface tube 6. The connecting portion 4 here may be a structure that can play an adsorption or fixing role, for example, it may be a welding point. Through the welding point on the connecting portion 4, the mounting plate 3 can be fixed on the outer wall of the overlapped heated surface tube 6, and the position of the shielding device is further fixed by the connecting portion 4, thereby improving the installation and fixing strength of the shielding device and preventing the shielding device from shifting during use. The connecting portion 4 may be a magnet. When the heated surface tube 6 is magnetic, the magnetic force generated by the magnet can fix the mounting plate 3 on the heated surface tube 6. The connecting portion 4 may also be a clamp, so that the clamp can be sleeved on the outer wall of the heated surface tube 6 to fix the mounting plate 3. In the present application, there is no specific restriction on the structure of the connecting portion 4, as long as the mounting plate 3 can be connected to the heated surface tube 6.
[0030] A polytetrafluoroethylene coating may be provided on the plate surface of the first shielding plate 1 and the plate surface of the second shielding plate 2, respectively. The polytetrafluoroethylene coating is resistant to high temperature and corrosion, improves the wear resistance of the first shielding plate 1 and the second shielding plate 2, increases the service life of the first shielding plate 1 and the second shielding plate 2, and reduces the replacement frequency of the first shielding plate 1 and the second shielding plate 2. In addition to providing a coating on the first shielding plate 1 and the second shielding plate 2, in some embodiments, a detachable wear-resistant plate body may also be provided on the first shielding plate 1 and the second shielding plate 2 to protect the first shielding plate 1 and the second shielding plate 2.
[0031] The first shielding plate 1 may include a first plate body 11 and a second plate body 12 extending in the vertical direction respectively, the second plate body 12 is hollow and slidably mounted on the first plate body 11, and the shielding device further includes a first locking structure for fixing the first plate body 11 and the second plate body 12 to adjust the length of the first shielding plate 1. The first plate body 11 may be used to connect with the suspension pipe 5, and the second plate body 12 may be movably arranged, so that the length of the first shielding plate 1 can be changed by the first plate body 11 and the second plate body 12 to adapt to suspension pipes 5 of various lengths.
[0032] In some embodiments, the first locking structure may include a plurality of first positioning holes 111 spaced apart on the first plate body 11 and a plurality of first mounting holes disposed on the second plate body 12, the first mounting holes corresponding to the positions of the first positioning holes 111, and the first plate body 11 and the second plate body 12 are connected by a first fastener passing through the first mounting holes and the first positioning holes 111. Through the plurality of first mounting holes and the plurality of first positioning holes 111, the installation position of the second plate body 12 can be adjusted, and at the same time, the plurality of first mounting holes and the plurality of first positioning holes 111 make the fixation between the first plate body 11 and the second plate body 12 more secure and less prone to misalignment. The first fastener here may be a first bolt and a first nut, and a plurality of first fasteners may be provided.
[0033] The second shielding plate 2 includes a third plate body 21 and a fourth plate body 22 which can extend in the vertical direction respectively, the fourth plate body 22 is hollow and slidably sleeved on the third plate body 21, and the shielding device also includes a second locking structure for fixing the third plate body 21 and the fourth plate body 22 to adjust the length of the second shielding plate 2. The third plate body 21 can be used to shield the heating surface tube 6, and the fourth plate body 22 can be movably arranged, so that the length of the second shielding plate 2 can be changed by the third plate body 21 and the fourth plate body 22 to shield more heating surface tubes 6.
[0034] In some embodiments, the second locking structure may include a plurality of second positioning holes 211 spaced apart on the third plate 21 and a plurality of second mounting holes on the fourth plate 22, the second mounting holes corresponding to the positions of the second positioning holes 211, and the third plate 21 and the fourth plate 22 are connected by second fasteners passing through the second mounting holes and the second positioning holes 211. The installation position of the fourth plate 22 can be adjusted by the plurality of second mounting holes and the plurality of second positioning holes 211, and the plurality of second mounting holes and the plurality of second positioning holes 211 make the fixation between the third plate 21 and the fourth plate 22 more secure and less prone to misalignment. The second fasteners here may be second bolts and second nuts, and a plurality of second fasteners may be provided.
[0035] Both ends of the first shielding plate 1 in the vertical direction can extend beyond the second shielding plate 2. Figure 2 The two ends of the first shielding plate 1 in the vertical direction are the two ends of the first shielding plate 1 in the up and down directions. By such an arrangement, the shielding range of the first shielding plate 1 on the suspension pipe 5 can be improved, thereby ensuring the protection of the suspension pipe 5.
[0036] According to a second aspect of the present disclosure, a superheater is also provided, comprising a suspension tube 5 extending in a vertical direction, a heating surface tube 6 extending in a horizontal direction, and a shielding device for a superheater according to any of the above embodiments, and having all the beneficial effects thereof, which will not be described in detail herein. The heating surface tube 6 is connected to the suspension tube 5, and the heating surface tube 6 comprises two rows respectively arranged on both sides of the suspension tube 5, the first shielding plate 1 faces the suspension tube 5 and is connected to the suspension tube 5, and the second shielding plate 2 faces the heating surface tube 6 and is connected to at least one heating surface tube 6.
[0037] 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.
[0038] 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.
[0039] 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 shielding device for a superheater, characterized in that: It comprises a first shielding plate and two oppositely arranged second shielding plates, wherein the second shielding plates are vertically arranged on the first shielding plate, and the first shielding plate and the second shielding plate extend in the vertical direction respectively and their lengths in the vertical direction are adjustable respectively.
2. The shielding device for superheater according to claim 1, characterized in that: The shielding device also includes a mounting plate, which is arranged at the end of the second shielding plate and is perpendicular to the plate surface of the second shielding plate.
3. The shielding device for superheater according to claim 2, characterized in that: The mounting plate is provided with a connecting portion for connecting with the heating surface pipe.
4. The shielding device for superheater according to claim 1, characterized in that: A polytetrafluoroethylene coating is provided on the plate surface of the first shielding plate and the plate surface of the second shielding plate respectively.
5. The shielding device for superheater according to claim 1, characterized in that: The first shielding plate includes a first plate body and a second plate body extending in the vertical direction respectively. The second plate body is hollow and slidably mounted on the first plate body. The shielding device also includes a first locking structure for fixing the first plate body and the second plate body to adjust the length of the first shielding plate.
6. The shielding device for superheater according to claim 5, characterized in that: The first locking structure includes a plurality of first positioning holes spaced apart on the first plate body and a plurality of first mounting holes spaced apart on the second plate body, the first mounting holes corresponding to the positions of the first positioning holes, and the first plate body and the second plate body are connected by a first fastener passing through the first mounting holes and the first positioning holes.
7. The shielding device for superheater according to claim 1, characterized in that: The second shielding plate includes a third plate body and a fourth plate body respectively extending in the vertical direction. The fourth plate body is hollow and slidably mounted on the third plate body. The shielding device also includes a second locking structure for fixing the third plate body and the fourth plate body to adjust the length of the second shielding plate.
8. The shielding device for superheater according to claim 7, characterized in that: The second locking structure includes a plurality of second positioning holes spaced apart on the third plate body and a plurality of second mounting holes spaced apart on the fourth plate body, the second mounting holes corresponding to the positions of the second positioning holes, and the third plate body and the fourth plate body are connected by second fasteners passing through the second mounting holes and the second positioning holes.
9. The shielding device for superheater according to claim 1, characterized in that: Both ends of the first shielding plate in the vertical direction extend beyond the second shielding plate respectively.
10. A superheater, characterized in that: It comprises a suspension tube extending in a vertical direction, a heating surface tube extending in a horizontal direction and a shielding device for a superheater according to any one of claims 1 to 9, wherein the heating surface tube is connected to the suspension tube, the heating surface tube comprises two rows respectively arranged on both sides of the suspension tube, the first shielding plate faces the suspension tube and is connected to the suspension tube, and the second shielding plate faces the heating surface tube and is connected to at least one of the heating surface tubes.