Restraint structure after falling off of anti-vibration support of finned tube of waste heat boiler
By adopting the constraint method of semicircular tube clamp structure, the misalignment and leakage problems after the vibration-proof bracket of the waste heat boiler module fin tube is solved, and the stable constraint and recovery of the fin tube is achieved.
Patent Information
- Application Number
- CN202422069229.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-08-26
AI Technical Summary
In the prior art, the anti-vibration bracket of the fin tube of the waste heat boiler module is prone to fall off, resulting in the misalignment and leakage of the fin tube.
The constraint structure consisting of several pairs of semicircular tube clamp structures is adopted. Each pair of semicircular tube clamps includes a first semicircular tube clamp, a second semicircular tube clamp and a tube clamp loose/tightening adjustment member. By adjusting the tightness, an elastic clamping structure for the fin tube is formed, instead of the function of the original vibration-proof bracket, forming a three-dimensional constraint.
It effectively prevents the fin tube from being misaligned and moved after the vibration-proof bracket falls off, avoids leakage, and restores the original design elastic constraint requirements of the fin tube.
Smart Images
Figure CN223306903U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of thermal power generation equipment, and particularly relates to a restraining structure for a fin tube anti-vibration bracket of a waste heat boiler after it falls off. Background Art
[0002] According to the relevant national technical policies, the waste heat boilers equipped with the 9F combined cycle units currently used in power plants are mostly produced by domestic manufacturers using foreign technology. The waste heat boilers equipped with these 9F combined cycle units are equipped with finned tube heating modules that are disposable devices and are maintenance-free. However, based on the domestic operation of 9F combined cycle units over the past decade, since domestic 9F combined cycle units are often used as daily start-stop peak-shaving units, it is easy for the anti-vibration brackets of the finned tubes of the waste heat boiler modules to become loose and aged. In the prior art, since there are no targeted protective measures for the anti-vibration brackets and finned tubes of the finned tubes of the waste heat boiler modules, the finned tubes of the waste heat boiler modules have the problem of finned tube dislocation, movement and leakage after the anti-vibration brackets fall off.
[0003] After searching the Chinese patent announcements, although the Chinese patent announcements also disclose some elastic pipe clamps and technical solutions for repairing defects in the waste heat boiler eel tube module, for example: the utility model with application number 2017112446144, named an elastic pipe clamp, a pipe clamp mounting seat and a method of use, is a flexible pipe clamp including a cushioning pad and an elastic mounting clamp, wherein the elastic mounting clamp includes an integrated pipe clamping part and a fixed part, the cushioning pad is installed in the pipe clamping part, and an opening is provided on the side of the fixed part. The elastic pipe clamp and pipe clamp mounting seat with the above structure can fix the pipeline to a stationary component without the use of additional fasteners. It has the characteristics of simple assembly operation and improved assembly efficiency. However, it cannot solve the problem of the waste heat boiler module fin tube in the prior art that the fin tube is misplaced, moved and leaked after the anti-vibration bracket falls off. 2016109155929, a utility model entitled "A method for quickly repairing defects in the eel-fin tube module of a waste heat boiler", essentially "comprises the following steps: 1) preliminarily determining the location of the defective tube of the eel-fin tube module, determining the system or module to which the leak belongs through visual inspection outside the furnace and analysis of operating data, and determining the peripheral pipes to be cut; 2) peeling off the eel-fins of the heated tube to find the specific location of the defective tube; first, using a cutting machine to cut the eel-fins along the radial direction of the heated tube, the cutting depth being 4 / 5 of the depth of the eel-fins along the radial direction of the tube; using a short steel rod to knock the eel-fins along the axial direction of the tube diameter, and using pliers to pull out the eel-fins after they are loosened", and similarly, it cannot solve the problem in the prior art that the fin tubes of the waste heat boiler module are dislocated, moved and leaked after the anti-vibration bracket falls off. Therefore, it is necessary to provide a quick repair method and structure for the finned tubes of the waste heat boiler to solve the problem in the prior art that the finned tubes of the waste heat boiler module are dislocated, moved and leaked after the anti-vibration bracket falls off. Utility Model Content
[0004] The purpose of the utility model is to solve the problem in the prior art that the anti-vibration bracket of the fin tube of the waste heat boiler module is easy to fall off, thereby causing the fin tube to be dislocated. A constraint structure is provided after the anti-vibration bracket of the fin tube of the waste heat boiler falls off, which has the beneficial effect of preventing the fin tube of the waste heat boiler module from being dislocated and moving after the anti-vibration bracket falls off.
[0005] In order to achieve the purpose of this utility model, the following technical solutions can be adopted:
[0006] A restraint structure for a waste heat boiler finned tube after its anti-vibration bracket falls off, the structural features of which are: composed of several pairs of semicircular tube clamp structures, each pair of semicircular tube clamp structures including a first semicircular tube clamp, a second semicircular tube clamp and a tube clamp loosening / tightening adjustment member, the inner diameter Φ2 of the circular body formed by the semicircular body portions of the first semicircular tube clamp and the second semicircular tube clamp is slightly larger than the outer diameter Φ1 of the waste heat boiler finned tube; the first semicircular tube clamp and the second semicircular tube clamp each have two or more semicircular bodies to clamp two or more waste heat boiler finned tubes. The clamping structure; the tube clamp loose / tight adjustment member is arranged between two adjacent semicircular bodies, and the waste heat boiler fin tube is clamped from the front and back by the first semicircular tube clamp and the second semicircular tube clamp. By adjusting the tightness of the tube clamp loose / tight adjustment member, an elastic clamping structure for multiple fin tubes of the waste heat boiler is formed. Two or more pairs of semicircular tube clamp structures perform combined elastic constraints on the fin tubes of the waste heat boiler, forming a three-dimensional constraint structure for the fin tubes of the waste heat boiler from top to bottom, thereby replacing the function of the original anti-vibration bracket or the elastic constraint requirements of the original design.
[0007] In order to achieve the purpose of the present invention, the following technical solutions can also be adopted:
[0008] Furthermore, the first semicircular tube clamp and the second semicircular tube clamp each have five semicircular bodies, forming a clamping structure for clamping five waste heat boiler finned tubes; each pair of semicircular tube clamp structures has four tube clamp loosening / tightening adjustment parts and is arranged between two adjacent semicircular bodies.
[0009] Furthermore, the first semicircular pipe clamp is a narrow semicircular pipe clamp, and the second semicircular pipe clamp is a wide semicircular pipe clamp; the pipe clamp loose / tight adjustment piece is arranged between two adjacent semicircular bodies and is composed of a screw with a screw head, a nut and a gasket.
[0010] Furthermore, after each pair of semicircular tube clamp structures are installed together, a gap of 0.8-1.2 mm is left at the closing point of the first semicircular tube clamp and the second semicircular tube clamp. The tightness of each pair of semicircular tube clamp structures on the waste heat boiler fin tube is adjusted by tightening or loosening the tube clamp loose / tight adjustment piece. After several pairs of semicircular tube clamp structures are installed together, tightened and welded, a rigid restriction structure for the entire row of waste heat boiler fin tubes is formed.
[0011] Furthermore, after several pairs of semicircular pipe clamp structures are installed, they are welded to the elastic pipe clamps on both sides to connect multiple pairs of elastic pipe clamp structures at the same elevation into a long rigid pipe clamp structure to replace the original design of the anti-vibration bracket of the same pipe screen.
[0012] Furthermore, a plurality of upper and lower combined semicircular tube clamp structures form a three-dimensional elastic or rigid constraint structure for the finned tubes of the waste heat boiler.
[0013] Furthermore, the distance between the centers of adjacent circles of the two pairs of semicircular tubes is equal to the distance between the centers of adjacent fin tubes in the original design.
[0014] Furthermore, after the front and rear rows of tube clamps of the same tube panel are cut flush, stainless steel plates can be used to cover and weld the front and rear rows of tube clamps of the same tube panel to block the boundaries between different tube panels, so as to prevent the fin tubes between different tube panels from being worn by the sharp ends of the tube clamps.
[0015] Furthermore, the elastic tube clamp is installed on the smooth tube part of the fin tube.
[0016] The utility model has the following beneficial effects:
[0017] 1. The constraint structure of the present invention is composed of a plurality of pairs of semicircular tube clamps. Each pair of semicircular tube clamps includes a first semicircular tube clamp, a second semicircular tube clamp, and a tube clamp loosening / tightening adjustment member. The inner diameter Φ2 of the first and second semicircular tube clamps is slightly larger than the outer diameter Φ1 of the finned tube. After each pair of tube clamps is installed, a 1mm gap is left at the point where the first and second semicircular tube clamps meet. By adjusting the tightness of the bolt assembly, the first and second semicircular tube clamps form an elastic clamping structure for the multiple finned tubes. After installation, the finned tubes are restored to their original position and meet the elastic constraint requirements of the original design. This solves the problem of finned tubes in the waste heat boiler module in the prior art, which can cause finned tubes to dislocate, move, and leak after the anti-vibration bracket falls off. It has the beneficial effect of preventing the finned tubes of the waste heat boiler module from dislocating and moving after the anti-vibration bracket falls off.
[0018] 2. The utility model connects several pairs of installed semicircular pipe clamps with the elastic pipe clamps on both sides by welding, so as to connect multiple pairs of semicircular elastic pipe clamp structures at the same elevation into a long semicircular elastic pipe clamp structure, thereby replacing the original design of a whole square steel anti-vibration bracket of the same tube screen; it has the beneficial effect of preventing the finned tubes of the waste heat boiler module from being dislocated and moving after the anti-vibration bracket falls off.
[0019] 3. The present invention utilizes multiple upper and lower semicircular tube clamps to create a three-dimensional elastic constraint structure for the finned tubes of the waste heat boiler. This solves the existing problem of finned tubes in waste heat boiler modules being misaligned, dislodged, and leaking after the anti-vibration brackets fall off, effectively preventing them from misaligning and dislodging. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the top view of the structure of the utility model in application state.
[0021] Figure 2 It is a schematic diagram of the main structure of the utility model in application state.
[0022] Figure 3 It is a structural diagram of the regulating structure of the utility model.
[0023] Figure 4 yes Figure 1 Schematic diagram of the CC-direction structural cross-section. DETAILED DESCRIPTION
[0024] Reference Figure 1-Figure 3 The specific embodiment of the utility model relates to a restraining structure for the finned tube of the waste heat boiler after the vibration isolation bracket falls off, which is composed of a plurality of pairs of semicircular tube clamp structures. Each pair of semicircular tube clamp structures includes a first semicircular tube clamp 1, a second semicircular tube clamp 2 and a tube clamp loosening / tightening adjusting member 3. The inner diameter Φ2 of the first semicircular tube clamp 1 and the second semicircular tube clamp 2 is slightly larger than the outer diameter Φ1 of the bare tube of the waste heat boiler finned tube; the first semicircular tube clamp 1 and the second semicircular tube clamp 2 each have two or more semicircular bodies to form a clamp for clamping two or more finned tubes of the waste heat boiler. holding structure; the tube clamp loose / tight adjustment member 3 is arranged between two adjacent semicircular bodies, and the waste heat boiler finned tube is clamped from the front and back by the first semicircular tube clamp 1 and the second semicircular tube clamp 2. By adjusting the tightness of the tube clamp loose / tight adjustment member 3, an elastic clamping structure for multiple finned tubes of the waste heat boiler is formed. Two or more pairs of semicircular tube clamp structures perform combined elastic constraints on the finned tubes of the waste heat boiler, forming a three-dimensional constraint structure for the finned tubes of the waste heat boiler from top to bottom, thereby replacing the function of the original anti-vibration bracket or the elastic constraint requirements of the original design.
[0025] In this embodiment:
[0026] The invention is composed of several pairs of semicircular pipe clamp structures, each pair of semicircular pipe clamp structures includes a first semicircular pipe clamp 1, a second semicircular pipe clamp 2 and a pipe clamp loose / tight adjustment member 3. The inner diameter Φ2 of the circular body formed by the semicircular body of the first semicircular pipe clamp 1 and the second semicircular pipe clamp 2 is slightly larger than the outer diameter Φ1 of the waste heat boiler fin tube. The first semicircular pipe clamp 1 and the second semicircular pipe clamp 2 each have two or more semicircular bodies to form a clamping structure for clamping two or more waste heat boiler fin tubes. The pipe clamp loose / tight adjustment member 3 is used to adjust the pipe clamp loose / tightness. The section 3 is arranged between two adjacent semicircular bodies, and the first semicircular tube clamp 1 and the second semicircular tube clamp 2 clamp the finned tube of the waste heat boiler from the front and back. By adjusting the tightness of the tube clamp loosening / tightening adjusting member 3, an elastic clamping structure for multiple finned tubes of the waste heat boiler is formed. Two or more pairs of semicircular tube clamp structures perform combined elastic constraints on the finned tubes of the waste heat boiler, forming a three-dimensional constraint structure for the finned tubes of the waste heat boiler from top to bottom, thereby replacing the function of the original anti-vibration bracket or the elastic constraint requirements of the original design.
[0027] In this embodiment:
[0028] Figure 1 The figure shows a schematic diagram of a pair of semicircular pipe clamp structures. Figure 1 The semicircular body of the non-finned tube is mainly used to represent the inner diameter Φ2 of the circle formed by the semicircular body of the first semicircular tube clamp 1 and the second semicircular tube clamp 2. Figure 1As can be seen in the figure, the first semicircular tube clamp 1 and the second semicircular tube clamp 2 of this embodiment each have five semicircular bodies, forming a clamping structure for clamping five finned tubes of a waste heat boiler. Each pair of semicircular tube clamp structures has four tube clamp loosening / tightening adjustment members 3 and is arranged between two adjacent semicircular bodies.
[0029] Reference Figure 2 and Figure 3 The first semicircular pipe clamp 1 is a narrow semicircular pipe clamp, and the second semicircular pipe clamp 2 is a wide semicircular pipe clamp; the pipe clamp loose / tight adjustment member 3 is set between the two adjacent semicircular bodies, and is composed of a screw 3-1 with a screw head, a nut 3-2 and a gasket 3-3.
[0030] After each pair of semicircular tube clamp structures are installed, a gap of 0.8-1.2mm is left at the closing point of the first semicircular tube clamp 1 and the second semicircular tube clamp 2. The tightness of each pair of semicircular tube clamp structures on the finned tubes of the waste heat boiler can be adjusted by tightening or loosening the tube clamp loosening / tightening adjusting piece 3. After several pairs of semicircular tube clamp structures are installed, tightened and welded together, a rigid restriction structure for the entire row of finned tubes of the waste heat boiler is formed.
[0031] After several pairs of semicircular pipe clamp structures are installed, they are welded to the elastic pipe clamps on both sides to connect multiple pairs of elastic pipe clamp structures at the same elevation into a long rigid pipe clamp structure to replace the original design of the anti-vibration bracket of the same pipe screen.
[0032] A three-dimensional elastic or rigid restraint structure for the finned tubes of the waste heat boiler is formed by a plurality of upper and lower combined semicircular tube clamp structures.
[0033] The distance between the centers of adjacent circles of the two pairs of semicircular tubes is equal to the center distance of adjacent fin tubes in the original design.
[0034] After the front and rear rows of tube clamps of the same tube panel are cut flush, stainless steel plates can be used to cover and weld the front and rear rows of tube clamps of the same tube panel to block the boundaries between different tube panels, so as to prevent the fin tubes between different tube panels from being worn by the sharp ends of the tube clamps.
[0035] The elastic tube clamp is installed on the smooth tube part of the fin tube.
[0036] The method for restraining the finned tube anti-vibration bracket of a waste heat boiler after it falls off, according to this embodiment, is characterized in that:
[0037] 1) An elastic constraint structure is provided for the finned tubes of the waste heat boiler module. The elastic constraint structure is used to position and constrain the finned tubes of the waste heat boiler module after the anti-vibration bracket falls off, thereby preventing the finned tubes of the waste heat boiler module from uncontrolled shaking and misalignment and friction, causing damage and leakage, and improving the efficiency of module finned tube repair;
[0038] 2) The elastic constraint structure is composed of a combination of several pairs of elastic pipe clamps. After a pair of elastic pipe clamps are assembled, adjusted, and welded, a regular elastic constraint is imposed on a row of pipes. Similarly, after several pairs of elastic pipe clamps are assembled, adjusted, and welded, a regular elastic constraint is imposed on several rows of pipes. After each elastic pipe clamp of the elastic constraint structure is installed, it is welded and connected to the elastic pipe clamps on both sides to connect multiple pairs of elastic pipe clamps at the same elevation into a long strip of pipe clamps, so that the finned tube can be restored to its original position and meet the elastic constraint requirements of the original design.
[0039] Furthermore, the elastic constraint structure is composed of a combination of several pairs of semicircular tube clamps. The inner diameter Φ2 of the semicircular tube clamps is slightly larger than the outer diameter Φ1 of the fin tube. After the tube clamps are installed, a gap of 1mm is left at the closed position of the two tube clamps. By utilizing the disturbance of the semicircular tube clamp steel plate and adjusting the tightness of the bolt assembly, the tube clamps form an elastic clamping force on the multiple fin tubes, so that the fin tubes are restored to their original position after installation and the elastic constraint requirements of the original design are met.
[0040] Furthermore, the circular elastic tube clamp is used to form a fixed restriction on the front and rear rows of fin tubes according to the separation requirements of different rows of tubes in the longitudinal direction of the original tube panel.
[0041] Furthermore, an elastic constraint structure is used to replace (but not change) the restriction range and function of the original fin tube anti-vibration bracket, and each pair of elastic tube clamps is installed in the same tube panel (it is not allowed to use the same pair of elastic tube clamps to enclose and restrict fin tubes of different tube panels or different systems).
[0042] In practical applications, this utility model:
[0043] 1) The semicircular tube clamp is designed according to the original design of the center distance of adjacent fin tubes and manufactured into products in the factory. The length and quantity are determined by the customer.
[0044] 2) When the pipe clamp is damaged or the original fin tube anti-vibration bracket needs to be destroyed to deal with the pipe defect, it can be used as a substitute.
[0045] 3) Before installing the semicircular tube clamps, peel off a section of the finned tube at the installation location for the first time to form a smooth tube.
[0046] 4) The wide-edge pipe clamp is installed on the inner side of the pipe, with the nut facing the welding direction.
[0047] 5) After the basic alignment and the light tube is put on, the loose and uneven fin tubes can be pulled into a line by prying the tube into the circle and tightening the fixing nut.
[0048] 6) After tightening the fixing nut, weld the semicircular pipe clamps in sections and spot weld the fixing nut.
[0049] 7) Select multiple sets of elastic pipe clamps of appropriate length. After individual installation, they can be connected in series to form a row and welded together. They can partially replace a section of the original pipe anti-vibration bracket or replace the entire anti-vibration bracket.
[0050] 8) After installing the elastic pipe clamps, cut off the excessively long pipe clamps on both sides to avoid rubbing against the adjacent pipe panels. Stainless steel plates can be added between the pipe panels to cover the front and rear rows of pipe clamps on the same pipe panel and weld them in place.
[0051] 9) Each finned tube on the heating surface of the same type of heater of the waste heat boiler needs to be separated and restricted by elevation layers and vertical and horizontal separations. After the finned tube is separated and restricted, it needs to have a certain elastic tightness, but can also move slightly to protect the finned tube of the waste heat boiler from spreading, rubbing, and hindering thermal expansion and contraction during operation.
[0052] 10) For the bare finned tubes in the same row in the longitudinal or transverse direction at the same elevation, first use the first semicircular tube clamp 1 and the second semicircular tube clamp 2 to enclose them together, then tighten the first semicircular tube clamp 1 and the second semicircular tube clamp 2 with the tightening bolt assembly 3, and finally fix the first semicircular tube clamp 1 and the second semicircular tube clamp 2 with segment welding, and fix the tightening bolt assembly 3 with spot welding. Each tube becomes a group. Figure 1 .
[0053] 11) The first semicircular pipe clamp 1, the second semicircular pipe clamp 2, and the pipe clamp tightening bolt assembly 3 are all made of 1Cr18Ni9Ti stainless steel, which can meet the requirements of use in flue gas environments below 600°C.
[0054] 12) The length of the first semicircular pipe clamp 1 and the second semicircular pipe clamp 2 used on site is generally designed and manufactured to be able to hold 3-7 pipes, to facilitate pipe alignment, and to be selected based on site conditions.
[0055] 13) Use elastic pipe clamps to ensure that the pipes in the same pipe clamp are aligned and avoid misalignment and friction, and to allow the pipes to move slightly up and down, so that the thermal expansion and contraction of the finned tubes are basically unrestricted.
[0056] 14) After repair, the fin tube can be restored to its original position and meet the elastic constraint requirements of the original design.
[0057] 15) The size of the elastic pipe clamp: the width of the first semicircular pipe clamp 1 and the second semicircular pipe clamp 2 are not equal. After combination, the side width of the two pipe clamps differ by 10mm to form a fillet weld. When installing, make the welding surface face the appropriate welding direction.
[0058] 16) After a single set of elastic pipe clamps is installed, the ends of the pipe clamps in the same row of the same pipe panel can be butt-welded to form a row.
[0059] 17) The elastic tube clamp is suitable for replacing the steel elastic bracket above the original finned tube. Before installation, the fins of the finned tube at the installation position need to be removed to form a bare tube.
[0060] 18) The inner diameter of the two-piece assembly of the elastic pipe clamp is slightly smaller than the diameter of the finned tube by 0.5-1mm. The clamping force on the finned tube is adjusted by the length and tightness of the screws of the bolt assembly 3.
[0061] 19) The elastic pipe clamp is suitable for use in flue gas environments below 600°C. The service life of the first high-temperature module area of the waste heat boiler is 7-8 years, and the service life of the remaining areas is more than 15 years.
[0062] In summary, the present invention relates to the problem of repairing the anti-vibration bracket of the fin tube of the waste heat boiler module, so as to prevent the fin tube of the waste heat boiler module from shaking and misaligning and rubbing after the bracket is damaged, resulting in leakage. The present invention provides a circular elastic pipe clamp for the fin tube of the waste heat boiler, which is made of stainless steel and can meet the working environment below 600°C. Through the application of technology, after two pairs of semicircular pipe clamps are enclosed to enclose multiple fin tubes in the same row, the elasticity of the semicircular pipe clamp steel plate is utilized and the tightness of the bolt group is adjusted, so that the pipe clamp forms an elastic clamping force on the multiple fin tubes. After installation, the fin tube can be restored to its original position and meet the elastic constraint requirements of the original design.
Claims
1. A restraining structure for a waste heat boiler fin tube anti-vibration bracket after it falls off, characterized by: The invention is composed of a plurality of pairs of semicircular tube clamp structures, each pair of semicircular tube clamp structures comprises a first semicircular tube clamp (1), a second semicircular tube clamp (2) and a tube clamp loosening / tightening adjusting member (3), wherein the inner diameter Φ2 of the circular body formed by the semicircular body parts of the first semicircular tube clamp (1) and the second semicircular tube clamp (2) is slightly larger than the outer diameter Φ1 of the bare tube of the waste heat boiler fin tube; the first semicircular tube clamp (1) and the second semicircular tube clamp (2) each have two or more semicircular bodies to form a clamping structure for clamping two or more waste heat boiler fin tubes; the tube clamp loosening / tightening adjusting member (3) is a kind of adjusting member for the semicircular tube clamp of the waste heat boiler; the semicircular body parts of the first semicircular tube clamp (1) and the second semicircular tube clamp (2) are a kind of adjusting member for the semicircular tube clamp of the waste heat boiler; the semicircular body parts of the first semicircular tube clamp (1) and the second semicircular tube clamp (2) each have two or more semicircular bodies to form a clamping structure for clamping two or more waste heat boiler fin tubes ... each have two or more semicircular bodies to form a clamping structure for clamping two or more waste heat boiler fin tubes; the semicircular body parts of the first semicircular tube clamp (1) and the second semicircular tube clamp (2) each have two or more semicircular bodies The loose / tight adjustment member (3) is arranged between two adjacent semicircular bodies, and the waste heat boiler finned tube is clamped from the front and back by the first semicircular tube clamp (1) and the second semicircular tube clamp (2). By adjusting the tightness of the tube clamp loose / tight adjustment member (3), an elastic clamping structure for multiple finned tubes of the waste heat boiler is formed. The finned tubes of the waste heat boiler are elastically constrained in a combined manner by two or more pairs of semicircular tube clamp structures, forming a three-dimensional constraint structure for the finned tubes of the waste heat boiler from top to bottom, thereby replacing the function of the original anti-vibration bracket or the elastic constraint requirement of the original design.
2. The restraining structure for the finned tube anti-vibration bracket of a waste heat boiler after it falls off according to claim 1, characterized in that: The first semicircular tube clamp (1) and the second semicircular tube clamp (2) each have five semicircular bodies, forming a clamping structure for clamping five waste heat boiler fin tubes; each pair of semicircular tube clamp structures has four tube clamp loosening / tightening adjustment parts (3) and is arranged between two adjacent semicircular bodies.
3. The restraining structure for the finned tube anti-vibration bracket of a waste heat boiler after it falls off according to claim 2, characterized in that: The first semicircular pipe clamp (1) is a narrow semicircular pipe clamp, and the second semicircular pipe clamp (2) is a wide semicircular pipe clamp; the pipe clamp loosening / tightening adjusting member (3) is arranged between two adjacent semicircular bodies and is composed of a screw (3-1) with a screw head, a nut (3-2) and a gasket (3-3).
4. The restraining structure for the finned tube of a waste heat boiler after the anti-vibration bracket falls off according to claim 2, characterized in that: After each pair of semicircular tube clamp structures are assembled and installed, a gap of 0.8-1.2 mm is left at the closure of the first semicircular tube clamp (1) and the second semicircular tube clamp (2). The tightness of each pair of semicircular tube clamp structures on the waste heat boiler fin tubes is adjusted by tightening or loosening the tube clamp loose / tight adjustment member (3). After several pairs of semicircular tube clamp structures are assembled, tightened and welded, a rigid restriction structure for the entire row of waste heat boiler fin tubes is formed.
5. The restraining structure for the finned tube of a waste heat boiler after the anti-vibration bracket falls off according to claim 2, characterized in that: After several pairs of semicircular pipe clamp structures are installed, they are welded to the elastic pipe clamps on both sides to connect multiple pairs of elastic pipe clamp structures at the same elevation into a long rigid pipe clamp structure to replace the original design of the anti-vibration bracket of the same pipe screen.
6. The restraining structure for the finned tube of a waste heat boiler after the anti-vibration bracket falls off according to claim 2, characterized in that: A three-dimensional elastic or rigid constraint structure for the finned tubes of the waste heat boiler is formed by a plurality of upper and lower semicircular tube clamp structures; the distance between the adjacent circle centers of the two pairs of semicircular tube clamps is equal to the distance between the circle centers of adjacent finned tubes in the original design; After the front and rear rows of tube clamps of the same tube panel are cut flush, stainless steel plates can be used to cover and weld the front and rear rows of tube clamps of the same tube panel to block the boundaries between different tube panels, so as to prevent the fin tubes between different tube panels from being worn by the sharp ends of the tube clamps.