Lateral overturning hearth entering method and device for boiler heating surface tube bundle

Abstract

The invention discloses a lateral overturning hearth entering method and device for a boiler heating surface tube bundle, and relates to the technical field of boiler heating surface tube bundle installing.The device comprises a telescopic regulation and control frame, rotary tables are movably connected to the two sides of the telescopic regulation and control frame through bearings, bearing frames are fixedly connected to the sides of the rotary tables, and channel steel frames are fixed to the bearing frames through bolts; positioning clamping mechanisms are uniformly mounted on the channel steel frame; the rollover type telescopic adjusting frame is adopted as a basic platform, the channel steel frame fixed with the ultra-wide tube bundle is controllably and laterally turned over through the rotation adjusting system, the space posture of the tube bundle is changed, the tube bundle is converted into an inclined vertical hearth entering state from a horizontal conveying state, blocking of a boiler steel frame stand column is successfully avoided, and therefore the boiler can be stably conveyed. And then the telescopic regulation and control frame directly carries the tube bundle to drive into the hearth, so that high-altitude operation is converted into ground operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of boiler heating surface tube bank installation, in particular to a lateral overturning and feeding method and device for a boiler heating surface tube bank. BACKGROUND

[0002] As the core heat exchange component of a boiler system, the installation process of a boiler heating surface tube bank directly affects the overall performance, manufacturing cost and construction safety of the boiler. In the manufacturing and installation process of large-scale boiler equipment, the heating surface tube bank, including superheaters, economizers and reheaters, usually has the structural characteristics of being super-wide and super-long. When these tube banks are installed into the boiler furnace, they need to pass through the dense boiler steel frame columns, forming a serious physical interference obstacle. The traditional solution completely relies on large hoisting machinery for high-altitude hoisting and overturning operations. This method not only has a very high risk of operation, which can easily cause tube bank shaking, collision, structural deformation and even falling accidents, but also has low construction efficiency, which seriously occupies key hoisting machinery resources and restricts the overall construction period.

[0003] The existing transportation scheme based on a flat car still needs hoisting assistance due to the inability to overcome physical space obstacles, and has not fundamentally solved the problem. Therefore, with the increasing requirements of modular construction, the industry urgently needs an innovative method and special device that can safely and efficiently realize the direct transfer and positioning of over-limit tube banks.

[0004] Therefore, we propose a lateral overturning and feeding method and device for a boiler heating surface tube bank. SUMMARY

[0005] The purpose of the present application is to provide a lateral overturning and feeding method and device for a boiler heating surface tube bank to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a lateral overturning and feeding method for a boiler heating surface tube bank, which uses a lateral overturning telescopic adjusting frame as a basic platform. By using a self-contained rotating adjusting system, the slot steel frame fixed with the super-wide tube bank is controllably overturned laterally, thereby changing the spatial posture of the tube bank from a horizontal transportation state to an inclined vertical feeding state to avoid the obstruction of the boiler steel frame columns.

[0007] Subsequently, the telescopic adjusting frame moves and directly carries the tube bank into the interior of the furnace, thereby converting high-altitude operation into ground operation.

[0008] Further, the lateral overturning and feeding method for the boiler heating surface tube bank includes a telescopic adjusting frame. The two sides of the telescopic adjusting frame are movably connected with rotating tables through bearings, and the rotating tables are fixedly connected with a carrying frame on the side. A slot steel frame is fixed on the carrying frame through bolts, and positioning clamping mechanisms are uniformly installed on the slot steel frame.

[0009] The positioning clamping mechanism comprises a hollow steel pipe welded on the top of the channel steel frame, a positioning sliding block uniformly and slidingly connected in the hollow steel pipe, an upper clamping sleeve and a lower clamping sleeve slidingly connected with the positioning sliding block and located in the hollow steel pipe, the upper clamping sleeve and the lower clamping sleeve being oppositely arranged and having threads on the inner walls, and a hanging column welded and fixed on the top of the upper clamping sleeve, the hanging column being used for clamping the gap of the super-wide pipe row.

[0010] Further, the positioning clamping mechanism further comprises a rotating shaft arranged on the positioning sliding block, a cam fixedly sleeved on the rotating shaft and located in the through groove of the upper clamping sleeve and the lower clamping sleeve, and the rotating shaft is used for driving the upper clamping sleeve and the lower clamping sleeve to slide on the surface of the positioning sliding block.

[0011] Further, a transmission rod is movably connected in the hollow steel pipe, screw grooves are arranged on the transmission rod and correspond to the upper clamping sleeve and the lower clamping sleeve, and a rotating wheel is fixedly sleeved on the transmission rod and located on the side of the hollow steel pipe.

[0012] Further, positioning plates two are fixedly arranged on the inner wall of the hollow steel pipe in a symmetrical manner, and positioning plates one are fixedly connected to one side of the upper clamping sleeve and the lower clamping sleeve, and the positioning plates one and the positioning plates two are correspondingly arranged.

[0013] Further, a positioning tooth is sleeved and mounted on the telescopic adjusting frame and located on the side of the rotating table, an abutting assembly is fixedly arranged on the telescopic adjusting frame at the bottom of the positioning tooth, the abutting assembly comprises a box body, a lock head abutting a spring in the box body, and the lock head is connected with a foot pedal outside the box body.

[0014] Further, a guide tooth is fixedly mounted on the side of the rotating table, a counterweight box is mounted on the telescopic adjusting frame at the bottom of the guide tooth, a telescopic sleeve is slidingly connected in the counterweight box, a rack is fixedly arranged on the top of the telescopic sleeve, and the rack is meshingly connected with the guide tooth.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. In the present application, the traditional high-altitude hoisting operation is converted into ground operation by adopting the side overturning telescopic adjusting frame and the rotating adjusting system, the pipe row is adjusted to be in an inclined vertical furnace state through controllable lateral overturning in a horizontal transportation state, the blocking of the boiler steel frame stand is avoided, the safety risk caused by high-altitude operation is reduced, meanwhile, the device is provided with abutting assemblies, counterweight boxes and other stable structures, the stability and controllability of the operation process are further ensured, and the overturning risk is reduced.

[0017] 2、The present application, through adjustable positioning clamping and linkage turnover mechanism, realizes the flexibility and efficiency of pipe row installation, significantly improves the operation efficiency, rotates the rotating shaft in the positioning clamping mechanism, drives the cam to control the opening and locking of the upper and lower clamping sleeves, realizes the independent fine adjustment of the single hanging column position, to adapt to different pipe row gaps, at the same time, through rotating the rotating wheel on the transmission rod, the whole positioning slider assembly can be driven to move synchronously in the hollow steel pipe, realize the overall position adjustment of all hanging columns, this kind of "overall and individual" combined adjustment mode makes the device can quickly and accurately fix various specifications of super wide pipe row, greatly reduces the preparation and adjustment time in advance;

[0018] 3、The present application, by using counterweight self-balancing and multi-point locking mechanism, ensures the stability and safety of the operation process, effectively reduces the operation risk, in the process of rotating the platform, the guide tooth fixed with it will drive the rack and telescopic sleeve to slide transversely in the counterweight box, the greater the turning angle, the greater the telescopic sleeve extension and the counterweight volume, forming a dynamic self-balancing system that increases with the turning state, effectively offsets the overturning moment caused by the center of gravity offset of the pipe row, and guarantees the overall stability of the telescopic control frame during movement and turning. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic view of the lateral turnover inlet device of the boiler heating surface pipe row of the present application;

[0020] Figure 2 It is the overall structure schematic view of the lateral turnover inlet device of the boiler heating surface pipe row of the present application;

[0021] Figure 3 It is the overall structure schematic view of the lateral turnover inlet device of the boiler heating surface pipe row of the present application;

[0022] Figure 4 It is the overall structure schematic view of the lateral turnover inlet device of the boiler heating surface pipe row of the present application;

[0023] Figure 5 It is the overall structure schematic view of the lateral turnover inlet device of the boiler heating surface pipe row of the present application;

[0024] Figure 6 It is the overall structure schematic view of the lateral turnover inlet device of the boiler heating surface pipe row of the present application;

[0025] Figure 7 It is the overall structure schematic view of the lateral turnover inlet device of the boiler heating surface pipe row of the present application;

[0026] In the figure: 1, telescopic control frame; 2, rotary table; 3, foot pedal; 4, abutment assembly; 5, positioning tooth; 6, bearing frame; 7, guide tooth; 8, counterweight box; 9, telescopic sleeve; 10, rack; 11, channel steel frame; 12, positioning clamping mechanism; 121, hollow steel pipe; 122, positioning sliding block; 123, upper clamp sleeve; 124, lower clamp sleeve; 125, rotary shaft; 126, cam; 127, positioning plate I; 128, hanging column; 13, transmission rod; 14, positioning plate II; 15, rotating wheel. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-7 , the present application provides a technical solution:

[0029] Embodiment 1: In order to solve the problem that the pipe row of the boiler heating surface is blocked by the boiler steel frame column and cannot directly enter the furnace due to width overrun, and the traditional high-altitude hoisting method has high safety risk, low operation efficiency and high cost, a mobile trolley with deflection function is set as a carrier, an adjustable positioning tool is added for pipe row locking, the pipe row deflection angle is calculated and installed, and the whole transfer work is completed by cooperating with the trolley movement;

[0030] As shown in Figure 1 , the telescopic control frame 1 is symmetrically distributed on both sides, two people need to operate at the same time, the positioning tooth 5 and the guide tooth 7 are arranged on the rotary table 2 at the top, and are fixed on the center shaft of the rotary table 2, and the bearing frame 6 is also installed, and the channel steel frame 11 is fixed on the bearing frame 6, and the channel steel frame 11 is placed on the top of the rotary table 2 to complete the inclination angle adjustment of the pipe row;

[0031] In order to lock the bearing frame 6 after deflection, as shown in Figure 4 , the abutment assembly 4 is fixed on the telescopic control frame 1 at the bottom of the positioning tooth 5, the box body is provided with an abutment block, and a spring is sleeved around the box body, and the foot pedal 3 connected at the bottom is suitable for the hands and feet of the operator, and the abutment block end of the abutment assembly 4 is separated from the locking of the positioning tooth 5 by pressing the foot pedal 3 downward, and the rotary table 2 is manually rotated to complete the angle adjustment of the channel steel frame 11, which belongs to direct action of gear, and the overall resistance is large, and a hydraulic cylinder can be additionally installed at the bottom of the channel steel frame 11 for auxiliary deflection, and the overall operation safety is improved;

[0032] For the adjustment and control of the positioning clamping mechanism 12 arranged on the top of the channel steel frame 11, as shown in Figure 6As shown, the whole is welded from hollow steel pipe 121 and square steel channel. The top and square side are provided with channels. Multiple sliding positioning sliders 122 are set in the pipe body. The top slider is slidably connected to the upper sleeve 123 and the lower sleeve 124. The top of the upper sleeve 123 is welded and fixed with the hanging column 128. During the specific installation, multiple hanging columns 128 are inserted into the gap of the pipe row to lock it. The subsequent deflection angle should not be too large. When it exceeds 60°, the pipe row needs to be bound.

[0033] Considering the position adjustment and locking of the hanging column 128, each positioning slider 122 is movably connected to a rotating shaft 125. The rotating shaft 125 is located within a slot in the middle of the upper sleeve 123 and lower sleeve 124, and a cam 126 is provided therein. Figure 7 As shown, with manual rotation of the rotating shaft 125, the alternately distributed cams 126 drive the upper sleeve 123 and lower sleeve 124, causing the upper sleeve 123 and lower sleeve 124 to move in an opening and closing manner, as shown. Figure 5 As shown, a transmission rod 13 is movably connected inside the hollow steel pipe 121. The transmission rod 13 is threaded, and the upper sleeve 123 and the lower sleeve 124 are threaded on their inner sides. After the two are closed to clamp the transmission rod 13, the rotating wheel 15 at the end of the transmission rod 13 is rotated, thereby driving the entire positioning slider 122 to slide as a whole inside the hollow steel pipe 121. This is suitable for adjusting the position of the hanging rod on a single hollow steel pipe 121, and realizing the overall position adjustment of the pipe row placed on the channel steel frame 11.

[0034] For pipe installation with special gaps, it is necessary to adjust the position of multiple positioning sliders 122 on the hollow steel pipe 121 individually. With the help of the rotating shaft 125, the cams 126 on both sides rotate, causing the upper sleeve 123 and the lower sleeve 124 to move back and forth. This causes the positioning plate 127 fixed at the top to abut and lock with the positioning plate 14 set on the inner wall of the hollow steel pipe 121. At the same time, it prevents the cam 126 from abutting against the inner wall of the upper and lower sleeves 124. The side wall of the cam 126 is designed with a cross section. As the rotating shaft 125 rotates, it squeezes the upper sleeve 123 and the lower sleeve 124. When it moves to the plane position, it completes the abutment of the inner wall of the sleeve. There is still a certain gap between the positioning plate 127 and the positioning plate 14. This completes the locking between the plates and prevents the cam 126 from slipping off the sleeve. This realizes the position adjustment and locking of the hanging column 128 at the top of the upper sleeve 123.

[0035] At the same time, the upper sleeve 123 and the lower sleeve 124 disengage from the transmission rod 13, thus disengaging from the overall control and achieving the locking of the lower pipe bank position for special requirements. At this time, the position of the hanging column 128 on the unopened sleeve can also be adjusted as a whole. That is, the hanging column 128 in the special position remains stationary, while the position of the remaining hanging columns 128 is adjusted as a whole, thus completing the clamping and locking of the pipe bank. The hanging columns 128 can be adjusted as a whole or individually, which is flexible and convenient.

[0036] In view of the overturning of the channel steel frame 11 on the telescopic regulating frame 1, the vehicle frame is prone to overturning at a certain height, and the overall pipe row carrying risk is increased, so as shown in Figure 2 and Figure 5 A counterweight box 8 is installed between the telescopic regulating frames 1 at the bottom of the bearing frame 6, a telescopic sleeve 9 is slidingly connected in the counterweight box 8, and a rack 10 is fixed to the top of the telescopic sleeve 9.

[0037] The rack 10 is engaged with the top guide tooth 7, and the whole frame 11 is rotated along the pointer 2, as shown in Figure 5 The bottom rack 10 is driven to move to the left side by the clockwise rotating guide tooth 7, and the telescopic sleeve 9 in the counterweight box 8 is slidingly moved to the left side, and the bottom of the telescopic sleeve 9 is tapered, which is matched with the convex surface of the counterweight box 8 to automatically expand and increase the overall volume, and the weight can be applied by the telescopic sleeve 9 through the water pump outside the telescopic regulating frame 1 to give the whole deflection process of the telescopic regulating frame 1 stability, and at the same time, with the increase of the deflection angle, the overall deflection amount of the telescopic sleeve 9 increases, the volume increases, and the overall load increases, which is suitable for the overall angle deflection of the bearing frame 6 to improve the overall stability of the telescopic regulating frame 1 carrying the pipe row to move;

[0038] Specific installation, there is a pipe row placement and bearing frame 6 deflection adjustment sequence, considering the overall weight of the pipe row is large, can be measured after the overall deflection angle, first control the rotating table 2, two people are located on both sides of the telescopic regulating frame 1, synchronous down pedal 3 to complete the rotating table 2 rotation control, driven by the telescopic sleeve 9 in the counterweight box 8, the whole positioning clamping mechanism 12 rotates relatively stable and flat, the side of the positioning tooth 5 is marked with a scale for easy observation of the deflection angle, after waiting for the position to be fixed, start the column 128 position adjustment, rotate the corresponding positioning slider 122 on the rotating shaft 125, manually move the column 128, after the end of the column 128, the pipe row is placed stably on the hollow steel pipe 121, the gap clamping between the column 128 and the pipe row is completed, and then the telescopic regulating frame 1 is pushed to move as a whole.

[0039] And for the pipe row placement first, then the rotation angle adjustment, considering the weight of the pipe row itself, and the direct action of the gear, the overall operation risk is high, which is easy to cause the hollow steel pipe 121 to touch the ground on one side, so a hydraulic rod needs to be installed at the bottom of the telescopic regulating frame 1 to assist the artificial rotation control, and at the same time, the control stability of the whole telescopic regulating frame 1 is improved.

[0040] The above content is only an example and description of the structure of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the invention or exceed the scope defined by the present claims, which should belong to the protection scope of the present application.

[0041] In the description of the specification, reference to "one embodiment", "an example", "a specific example" or the like means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "an example", "a specific example" or the like in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of the application disclosed above are only to help explain the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments. Obviously, many modifications and variations can be made in light of the contents of the specification. The specification selects and specifically describes these embodiments in order to better explain the principles and practical application of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A method of laterally inverting a bank of boiler heating surface tubes into a furnace, characterized by, Using a side-tilting telescopic adjustment frame as the basic platform, the channel steel frame (11) with the ultra-wide pipe bank fixed is turned sideways in a controllable manner through the self-contained rotation adjustment system, thereby changing the spatial posture of the pipe bank and changing it from a horizontal transport state to an inclined vertical furnace state to avoid the obstruction of the boiler steel frame column. Subsequently, the telescopic control frame (1) moves and directly carries the pipe bank into the furnace, realizing the transformation of high-altitude operation into ground operation.

2. A lateral roll-in device for a boiler bank according to claim 1, characterized in that The method for lateral flipping of the heating surface tube bank of the boiler includes a telescopic control frame (1), on both sides of the telescopic control frame (1) being movably connected to a rotating platform (2) via bearings, and a bearing frame (6) being fixedly connected to the side of the rotating platform (2). A channel steel frame (11) is fixed on the bearing frame (6) via bolts, and a positioning and locking mechanism (12) is evenly installed on the channel steel frame (11). The positioning and clamping mechanism (12) includes a hollow steel pipe (121) welded to the top of the channel steel frame (11). A positioning slider (122) is uniformly slidably connected inside the hollow steel pipe (121). An upper sleeve (123) and a lower sleeve (124) are slidably connected to the side of the positioning slider (122) and inside the hollow steel pipe (121). The upper sleeve (123) and the lower sleeve (124) are arranged opposite to each other and the inner wall is provided with threads. A hanging column (128) is welded and fixed to the top of the upper sleeve (123). The hanging column (128) is used to clamp the gap of the ultra-wide pipe row.

3. A lateral roll-in device for a boiler bank according to claim 2, characterized in that The positioning and locking mechanism (12) further includes a rotating shaft (125) disposed on the positioning slider (122), and a cam (126) is fixedly mounted on the groove between the upper sleeve (123) and the lower sleeve (124) of the rotating shaft (125). Rotating the rotating shaft (125) is used to drive the sleeve (123) and the lower sleeve (124) to slide on the surface of the positioning slider (122).

4. A lateral roll-in device for a boiler bank according to claim 3, characterized in that A transmission rod (13) is movably connected inside the hollow steel pipe (121). The transmission rod (13) is provided with a threaded groove corresponding to the upper sleeve (123) and the lower sleeve (124). A rotating wheel (15) is sleeved and fixed on the side of the transmission rod (13) located on the hollow steel pipe (121).

5. A lateral roll-in device for a bank of boiler heating surface tubes according to claim 4, characterized in that The hollow steel pipe (121) has a symmetrically fixed positioning plate two (14) on its inner wall. The upper sleeve (123) and the lower sleeve (124) are fixedly connected to a positioning plate one (127) on one side. The positioning plate one (127) and the positioning plate two (14) are set accordingly.

6. A lateral roll-in device for a boiler bank according to claim 5, characterized in that A positioning tooth (5) is fitted on the telescopic control frame (1) and located on the side of the rotating table (2). A contact component (4) is fixed on the telescopic control frame (1) at the bottom of the positioning tooth (5). The contact component (4) includes a box body and a lock head with a spring inside the box body. The lock head is located on the outside of the box body and connected to a foot pedal (3).

7. A lateral roll-in device for a bank of boiler heating surface tubes according to claim 6, characterized in that A guide tooth (7) is also fixedly installed on the side of the rotary table (2). A counterweight box (8) is installed on the telescopic control frame (1) at the bottom of the guide tooth (7). A telescopic sleeve (9) is slidably connected inside the counterweight box (8), and a rack (10) is fixed on the top of the telescopic sleeve (9). The rack (10) meshes with the guide tooth (7).

Images