A lifting device for wear-resistant construction of boiler water wall grille

Abstract

The utility model provides a lifting device for the anti-wear construction of the water-cooled wall grid of the boiler, wherein the heating surface of the water-cooled wall is provided with a grid anti-wear plate, and the grid anti-wear plate includes a horizontal plate and a vertical plate; the lifting device includes a lifting platform, and the four sides of the lifting platform are all equipped with support components, and the end of the support component is horizontally equipped with a roller, and the width of the roller is greater than the spacing between two adjacent vertical plates. The utility model combines the characteristics of the grid anti-wear plate and reasonably designs the width of the roller at the end of the support component, which can prevent the roller from getting stuck between two adjacent vertical plates, thereby ensuring that the roller is always in contact with the vertical plate, and can effectively avoid the roller from directly and rigidly colliding with the water-cooled wall, thereby well protecting the water-cooled wall.

Description

Technical Field

[0001] The present application relates to the technical field of water-cooled wall grille wear-proof construction, and in particular to a lifting device for boiler water-cooled wall grille wear-proof construction. Background Art

[0002] The grid anti-wear technology can greatly reduce the wear of the heating surface (water-cooled wall) of the CFB boiler during operation, and prevent leakage or even pipe burst accidents caused by wear of the heating surface, thereby reducing the number of non-stop operations of the circulating fluidized bed boiler unit and effectively extending the continuous operation cycle of the circulating fluidized bed boiler. Compared with traditional anti-wear methods, the grid anti-wear technology has many advantages such as good protection effect, long protection cycle, low transformation cost, and convenient construction. Therefore, it has gradually been promoted and used in various power plants and enterprises and has been widely praised.

[0003] When inspecting and constructing a CFB boiler, a lifting platform is required. The lifting platform is controlled to move up and down in the furnace by hoisting. In order to prevent the lifting platform from shaking in the horizontal direction during construction, a horizontal support assembly is generally arranged around the lifting platform. The end of the support assembly abuts against the inner wall of the furnace to fix the lifting platform; and in order to reduce the friction between the support assembly and the inner wall of the furnace during the lifting of the lifting platform, a roller is generally arranged at the end of the support assembly.

[0004] Since the grid anti-wear technology is a relatively new anti-wear technology, and the lifting platform used in the CFB boiler did not have grid anti-wear technology at the beginning of its design, the existence of grids on the surface of the heating surface was not considered during the design. Therefore, after the transformation using the grid anti-wear technology, if the traditional lifting platform is still used, the rollers at the end of its supporting assembly are narrow and can easily get stuck between two adjacent anti-wear vertical plates, thereby causing a rigid collision with the water-cooled wall, which can easily cause deformation or even damage to the water-cooled wall, resulting in economic losses. Summary of the invention

[0005] The present application provides a lifting device for boiler water-cooled wall grille wear-proof construction, which solves the problem that when a traditional lifting platform is used for a CFB boiler that adopts grille wear-proof technology, the roller at the end of the supporting assembly of the lifting platform is easily stuck between two adjacent anti-wear vertical plates, thereby causing a rigid collision with the water-cooled wall, which easily causes deformation or even damage of the water-cooled wall.

[0006] The present application provides a lifting device for the wear-proof construction of boiler water-cooled wall grilles, wherein the heating surface of the water-cooled wall is provided with a grille wear-proof plate, and the grille wear-proof plate includes a horizontal plate and a vertical plate; the lifting device includes a lifting platform, and support assemblies are installed on the four sides of the lifting platform, and rollers are horizontally installed at the ends of the support assemblies, and the width of the rollers is greater than the spacing between two adjacent vertical plates.

[0007] In the technical solution provided in the present application, the width of the roller at the end of the support assembly is reasonably designed in combination with the characteristics of the grille anti-wear plate, which can prevent the roller from being stuck between two adjacent vertical plates, thereby ensuring that the roller is always in contact with the vertical plate, and can effectively avoid direct rigid collision between the roller and the water-cooled wall, thereby well protecting the water-cooled wall.

[0008] In some embodiments, the support assembly includes a support rod and a U-shaped bracket, the roller is rotatably mounted on the U-shaped bracket via a pin, and the U-shaped bracket is fixedly mounted on the end of the support rod.

[0009] In some embodiments, a shock absorber is connected between the support rod and the U-shaped bracket to cushion the impact of the roller on the vertical plate.

[0010] In some embodiments, the shock absorber includes a slide cylinder and a slide rod, wherein the slide cylinder is fixedly mounted at the end of the support rod; one end of the slide rod is inserted into the slide cylinder, and the other end is connected to the U-shaped bracket; a spring is provided in the slide cylinder, and the two ends of the spring are respectively abutted against the bottom surface of the slide cylinder and the end surface of the slide rod; when the roller abuts against the vertical plate of the water-cooled wall, the impact between the roller and the vertical plate is absorbed by the spring, thereby buffering the impact of the roller on the vertical plate, which can effectively reduce the deformation of the vertical plate.

[0011] In some embodiments, a limiting groove is provided in the axial direction on the side wall of the slide cylinder, and a limiting block is provided on the outer wall of the slide rod. The limiting block is slidably embedded in the limiting groove. Through the cooperation between the limiting groove and the limiting block, on the one hand, the slide rod can be constrained to slide linearly in the axial direction in the slide cylinder to prevent the slide rod and the slide cylinder from rotating relative to each other; on the other hand, the sliding position of the slide rod can be limited to prevent the slide rod from falling off from the slide cylinder.

[0012] In some embodiments, the support rod is a telescopic rod, which is connected to a driving component. The driving component is used to drive the telescopic rod to extend and retract. By driving the telescopic rod to extend and retract by the driving component, the horizontal distance between the lifting platform and the four water-cooled walls can be adjusted, thereby facilitating construction.

[0013] In some embodiments, a buffer sleeve is provided on the surface of the roller to further buffer the impact of the roller on the vertical plate.

[0014] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in this application are used to illustrate preferred embodiments, so that those skilled in the art can clearly understand various other advantages and benefits, and should not be considered as limitations of this application. In addition, the same reference numerals are used throughout the drawings to represent the same or similar components.

[0016] Figure 1 This is a schematic diagram of the state of the lifting platform working in the furnace in one embodiment of the present application;

[0017] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0018] Figure 3 This is a schematic diagram of the state of the shock absorber when the spring is not compressed in one embodiment of the present application;

[0019] Figure 4 This is a schematic diagram of the state of the shock absorber when the spring is compressed in one embodiment of the present application;

[0020] Icons: 1. Water-cooled wall; 2. Horizontal plate; 3. Vertical plate; 4. Lifting platform; 5. Roller; 6. Support rod; 7. U-shaped bracket; 8. Pin shaft; 9. Shock absorber; 10. Slide cylinder; 11. Slide rod; 12. Spring; 13. Limit groove; 14. Limit block; 15. Driving component. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0024] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0026] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0027] See also Figure 1-Figure 4 The embodiment of the present application provides a lifting device for boiler water wall grille wear protection construction, wherein the heating surface of the water wall 1 is provided with a grille wear protection plate, and the grille wear protection plate includes a horizontal plate 2 and a vertical plate 3; the lifting device includes a lifting platform 4, and the four sides of the lifting platform 4 are all equipped with support assemblies, and the end of the support assembly is horizontally equipped with a roller 5, and the width of the roller 5 is greater than the spacing between two adjacent vertical plates 3.

[0028] In the technical solution provided in the present application, the width of the roller 5 at the end of the support assembly is reasonably designed in combination with the characteristics of the grille anti-wear plate, which can prevent the roller 5 from being stuck between two adjacent vertical plates 3, thereby ensuring that the roller 5 is always in contact with the vertical plate 3, and can effectively avoid the roller 5 directly from rigidly colliding with the water-cooled wall 1, thereby well protecting the water-cooled wall 1.

[0029] Please continue reading Figure 2 In some embodiments, the support assembly includes a support rod 6 and a U-shaped bracket 7, the roller 5 is rotatably mounted on the U-shaped bracket 7 via a pin 8, and the U-shaped bracket 7 is fixedly mounted on the end of the support rod 6.

[0030] Please continue reading Figure 2 In some embodiments, a shock absorber 9 is connected between the support rod 6 and the U-shaped bracket 7 to cushion the impact of the roller 5 on the vertical plate 3.

[0031] Please continue reading Figure 3 , 4 In some embodiments, the shock absorber 9 includes a slide tube 10 and a slide bar 11. The slide tube 10 is fixedly mounted at the end of the support rod 6. One end of the slide bar 11 is inserted into the slide tube 10, and the other end is connected to the U-shaped bracket 7. A spring 12 is arranged in the slide tube 10, and the two ends of the spring 12 are respectively in contact with the bottom surface of the slide tube 10 and the end surface of the slide bar 11. When the roller 5 is in contact with the vertical plate 3 of the water-cooled wall 1, the impact of the roller 5 and the vertical plate 3 is absorbed by the spring 12, thereby buffering the impact of the roller 5 on the vertical plate 3, which can effectively reduce the deformation of the vertical plate 3. The inner wall of the slide tube 10 and the outer wall of the slide bar 11 are connected by damping sliding, which can prevent the spring 12 from vibrating back and forth, thereby playing a role in vibration reduction.

[0032] Please continue reading Figure 3 , 4 In some embodiments, a limiting groove 13 is axially provided on the side wall of the slide cylinder 10, and a limiting block 14 is provided on the outer wall of the slide rod 11. The limiting block 14 is slidably embedded in the limiting groove 13. Through the cooperation between the limiting groove 13 and the limiting block 14, on the one hand, the slide rod 11 can be constrained to slide linearly in the slide cylinder 10 along the axial direction to prevent the slide rod 11 and the slide cylinder 10 from relative rotation; on the other hand, the sliding position of the slide rod 11 can be limited to prevent the slide rod 11 from falling off from the slide cylinder 10.

[0033] Please continue reading Figure 1 In some embodiments, the support rod 6 is a telescopic rod, which is connected to a driving component 15. The driving component 15 is used to drive the telescopic rod to extend and retract. By driving the telescopic rod to extend and retract through the driving component 15, the horizontal distance between the lifting platform 4 and the four water-cooled walls 1 can be adjusted, thereby facilitating construction.

[0034] In a specific implementation, the driven component 15 may be a hydraulic cylinder or a linear motor, which drives the telescopic rod to extend and retract.

[0035] In some embodiments, a buffer sleeve is provided on the surface of the roller 5 to further buffer the impact of the roller 5 on the vertical plate 3 .

[0036] In a specific implementation, the buffer sleeve can be made of flexible materials such as a rubber sleeve.

[0037] The working process of the lifting device in this embodiment is as follows:

[0038] The construction workers stand on the lifting platform 4, lift the lifting platform 4 to the target height through the crane, and then drive the telescopic rod to extend and retract through the driving component 15, adjust the horizontal position of the lifting platform 4, make the lifting platform 4 close to the water-cooled wall 1 to be constructed, continue to drive the telescopic rod to extend and retract, so that the roller 5 abuts against the vertical plate 3 on the water-cooled wall 1, and fix the lifting platform 4.

[0039] When it is necessary to adjust the horizontal position of the lifting platform 4, for example, when it is necessary to move the lifting platform 4 to the right, first drive the corresponding telescopic rod to retract through the front and rear driving components 15, then control the telescopic rod on the right to retract, and control the telescopic rod on the left to extend. After adjusting the horizontal position of the lifting platform 4, drive the telescopic rod to extend so that the roller 5 abuts against the vertical plate 3 to fix the lifting platform 4.

[0040] When the height of the lifting platform 4 needs to be adjusted, the lifting platform 4 can be directly driven up or down by the crane, and the roller 5 can roll along the vertical board 3 with less friction; and because the roller 5 is in contact with the two vertical boards 3 at the same time, the structure is more stable when rolling.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A lifting device for boiler water wall grid wear protection construction, wherein the heating surface of the water wall (1) is provided with a grid wear protection plate, and the grid wear protection plate comprises a horizontal plate (2) and a vertical plate (3); characterized in that: The lifting device comprises a lifting platform (4), the four sides of the lifting platform (4) are all equipped with support components, the ends of the support components are horizontally equipped with rollers (5), and the width of the rollers (5) is greater than the distance between two adjacent vertical plates (3).

2. A lifting device for wear-resistant construction of boiler water wall grille according to claim 1, characterized in that: The support assembly comprises a support rod (6) and a U-shaped bracket (7); the roller (5) is rotatably mounted on the U-shaped bracket (7) via a pin shaft (8); and the U-shaped bracket (7) is fixedly mounted on the end of the support rod (6).

3. A lifting device for wear-proof construction of boiler water wall grille according to claim 2, characterized in that: A shock absorber (9) is connected between the support rod (6) and the U-shaped bracket (7).

4. A lifting device for wear-resistant construction of boiler water wall grille according to claim 3, characterized in that: The shock absorber (9) comprises a slide cylinder (10) and a slide rod (11), wherein the slide cylinder (10) is fixedly mounted at the end of the support rod (6); one end of the slide rod (11) is inserted into the slide cylinder (10), and the other end is connected to the U-shaped bracket (7); a spring (12) is arranged in the slide cylinder (10), and the two ends of the spring (12) are respectively in contact with the bottom surface of the slide cylinder (10) and the end surface of the slide rod (11).

5. A lifting device for wear-proof construction of boiler water wall grille according to claim 4, characterized in that: A limiting groove (13) is provided on the side wall of the slide cylinder (10) along the axial direction, and a limiting block (14) is provided on the outer wall of the slide rod (11). The limiting block (14) is slidably embedded in the limiting groove (13).

6. The lifting device for anti-wear construction of boiler water wall grille according to claim 2 is characterized in that: The support rod (6) is a telescopic rod, and the telescopic rod is connected to a driving component (15). The driving component (15) is used to drive the telescopic rod to extend and retract.

7. The lifting device for wear-proof construction of boiler water wall grille according to claim 1, characterized in that: The surface of the roller (5) is covered with a buffer sleeve.

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