Wear-resistant protective tile for h-type finned economizer tube

Abstract

The present invention relates to the technical field of heat exchange tubes on boiler heating surfaces, and particularly to a wear-resistant protective tile for an H-type finned economizer tube. The wear-resistant protective tile comprises: an economizer component, comprising a tube body and a plurality of fins mounted on an outer wall of the tube body, wherein two fins at the same level form an H shape; and a protective component, which is mounted on an outer wall of the economizer component and comprises a bendable plate body mounted on the outer wall of the tube body and protective shells sleeved on outer walls of the fins, a pressing part attached to the outer wall of the tube body is provided in each protective shell, and the pressing part locks the positions of two protective shells which are inserted into each other at the same level by means of a transmission part, and drives clamping plates in the protective shells to engage the outer wall of the tube body, so as to lock the protective shells and the plate body. The protective shells and the plate body are formed as a whole to comprehensively protect the tube body and each fin, thereby achieving the aim of wrapping around and protecting the economizer component.

Description

A wear-resistant protective tile for H-type fin economizer tubes Technical Field

[0001] The invention relates to the technical field of boiler heating surface heat exchange tubes, in particular to an anti-wear protective tile for H-shaped fin economizer tubes. Background Art

[0002] Economizers, one of the heating surfaces of thermal power plant boilers, often use H-shaped finned tubes to improve heat transfer efficiency per unit area. These H-shaped fins divide the flue gas flow area into several smaller zones, balancing the airflow. Compared to bare tube economizers, these economizers offer higher heat transfer efficiency and better economics. However, during operation, fly ash can cause serious wear on the pipe surface, jeopardizing the safe operation of the equipment. To minimize fly ash damage on the windward side of the pipe and extend its service life, anti-wear tiles must be installed. Conventional anti-wear tiles cannot be used due to the influence of the H-shaped fins.

[0003] The patent of this invention provides a new type of special H-type fin economizer tube anti-wear protective tile. The anti-wear protective tile made by this invention adopts carbon structural steel plate and can be tightly installed on the surface of the pipeline. It has good anti-wear performance and high reliability. The invention is simple to make, has a wide range of applications, and has high promotion and application value.

[0004] Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] In view of the fact that the fly ash wear on the pipe surface of the existing H-type fin economizer pipe anti-wear protection tile seriously endangers the safe operation of the equipment, the present invention is proposed to reduce the problem of fly ash blowing loss on the windward surface of the pipe.

[0007] Therefore, the object of the present invention is to provide an H-type fin economizer tube anti-wear shoe, the purpose of which is to: increase the service life of economizer components.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: an H-type fin economizer tube anti-wear shoe, comprising an economizer component, including a tube body and a plurality of fins installed on the outer wall of the tube body, and two fins at the same height form an H shape,

[0009] It includes a protective component installed on the outer wall of the economizer component, which includes a bendable plate body installed on the outer wall of the pipe body and a protective shell sleeved on the outer wall of the fin. An extrusion member that fits against the outer wall of the pipe body is provided inside the protective shell. The extrusion member locks the positions of the two parts of the protective shell that are inserted into each other at the same height through a transmission member, and drives the clamping plate inside the protective shell to clamp the outer wall of the plate body, thereby locking the protective shell and the plate body.

[0010] As a preferred solution of the wear-resistant protection tile for the H-shaped fin economizer tube of the present invention, wherein: the shape of the plate body is a continuous "abundant" character shape and is composed of a plurality of horizontal plates and a vertical plate, and the fin is located between adjacent horizontal plates.

[0011] As a preferred solution of the wear-resistant protection tile for the H-shaped fin economizer tube of the present invention, wherein: the protective shell is divided into two parts, and each part includes a cavity in the middle and mounting cavities on both sides. The fin is accommodated in the cavity, and two sets of the extrusion member, the transmission member, and the clamping plate are respectively arranged in the two mounting cavities.

[0012] As a preferred solution of the wear-resistant protection tile for the H-shaped fin economizer tube of the present invention, wherein: the extrusion member includes an arc-shaped plate that fits against the outer wall of the plate body, and a slope block is installed on the outer wall of the arc-shaped plate. The slope block slides along the first chute in the mounting cavity.

[0013] As a preferred solution of the wear-resistant protection tile for the H-shaped fin economizer tube of the present invention, wherein: the transmission member includes an insertion rod installed in the second chute of the mounting cavity. A convex block is provided on the insertion rod, and a first spring is sleeved on the outer wall of the insertion rod. A first limiting groove is provided in the second chute, and the convex block moves along the first limiting groove.

[0014] As a preferred solution of the wear-resistant protection tile for the H-shaped fin economizer tube of the present invention, wherein: one end of the insertion rod is provided with a first slope and contacts the slope block through the first slope, and the other end of the insertion rod is provided with a conical plug.

[0015] As a preferred solution of the wear-resistant protection tile for the H-shaped fin economizer tube of the present invention, wherein: racks are provided on one side of the outer surfaces of the two parts of the protective shell, and tooth grooves are provided on the other side. A gear is provided inside the tooth groove, and the rack of one part of the protective shell is inserted into the tooth groove of the other part of the protective shell.

[0016] As a preferred solution for the anti-wear protective tile of the H-type fin economizer tube described in the present invention, a groove is provided on one side of the gear, the conical plug is inserted into the groove, a locking rod is fixedly connected to the other side of the gear, the locking rod is inserted into the lock hole on the side of the tooth groove, and the tooth groove is provided with a receiving groove on the side opposite to the lock hole, and the gear is located in the receiving groove.

[0017] As a preferred solution for the anti-wear protection tile of the H-type fin economizer tube described in the present invention, the splint is rotatably arranged in the rotating cavity of the installation cavity, the splint is installed at the outlet of the rotating cavity through a rotating shaft, the splint is provided with an inclined groove, and a connecting rod is provided under the inclined block, and the connecting rod slides along the inclined groove.

[0018] As a preferred solution for the anti-wear tile of the H-type fin economizer tube of the present invention, two upper and lower clamps are installed in the same rotating cavity, and the two clamps are symmetrically arranged, and a slot is opened on the plate body, and the clamp is clamped in the slot.

[0019] The beneficial effects of the present invention are as follows: the plate body is sleeved on the outer wall of the tube body to protect the outer wall of the tube body, and then the protective shell is sleeved on the outer wall of the fin. The left and right parts of the protective shell at the same height are sleeved at the same time, and the rack of one part of the protective shell is inserted into the tooth groove of the other part. At the same time, the extrusion plate is squeezed by the outer wall of the tube body, and then the gear is driven to move through the transmission part to finally lock the gear, lock the rack and the tooth groove, and lock the positions of the left and right parts of the protective shell. At the same time, the movement of the extrusion part also drives the two splints to rotate and close, and the plate body in the middle is clamped and locked, so that the protective shell and the plate body form a whole to comprehensively protect the tube body and each fin, thereby achieving the purpose of wrapping and protecting the economizer components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0021] FIG1 is a schematic diagram of the overall structure of the H-type fin economizer tube anti-wear tile according to the present invention.

[0022] FIG2 is a schematic diagram of a partial protective shell structure of an anti-wear protective tile for an H-type fin economizer tube according to the present invention.

[0023] FIG3 is a side view of the structure of the H-type fin economizer tube anti-wear tile of the present invention.

[0024] FIG4 is a schematic diagram of the cross-sectional structure along the line AA in FIG3 .

[0025] FIG5 is a schematic diagram of the BB cross-sectional structure in FIG3 .

[0026] FIG6 is a schematic diagram of the CC cross-sectional structure in FIG3 .

[0027] FIG7 is an enlarged schematic diagram of the structure at point D in FIG5 .

[0028] Figure 8 is a schematic diagram of the middle plate structure of the H-type fin economizer tube anti-wear tile. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0032] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0033] Example 1

[0034] Referring to FIG. 1, a first embodiment of the present invention provides an anti-abrasion guard for an H-shaped fin economizer tube, including an economizer component 100, which includes a tube body 101 and a plurality of fins 102 installed on the outer wall of the tube body 101, and two fins 102 at the same height form an H shape. It also includes a protection component 200 installed on the outer wall of the economizer component 100, which includes a bendable plate body 201 installed on the outer wall of the tube body 101, and a protective shell 202 sleeved on the outer wall of the fin 102. An extrusion member 203 that fits against the outer wall of the tube body 101 is provided inside the protective shell 202. The extrusion member 203 locks the positions of two parts of the protective shell 202 that are inserted into each other at the same height through a transmission member 204, and drives a clamping plate 205 inside the protective shell 202 to clamp the outer wall of the plate body 201, thereby locking the protective shell 202 and the plate body 201.

[0035] In this embodiment, the purpose of protecting the outer wall of the economizer component 100 is achieved by sleeving the protection component 200 on the outer walls of the tube body 101 and the fins 102. Specifically, first, the plate body 201 is sleeved on the outer wall of the tube body 101, and then the protective shell 202 is sleeved on the outer wall of the fin 102. The left and right parts of the protective shell 202 at the same height are sleeved simultaneously. A rack 202c of one part of the protective shell 202 is inserted into a tooth groove 202d of the other part. At the same time, the extrusion member 203 is extruded by the outer wall of the tube body 101, and then the gear 204f is driven to move through the transmission member 204 and finally locked. Since the gear 204f is between the rack 202c and the tooth groove 202d, the rack 202c and the tooth groove 202d are locked, and the left and right parts of the protective shell 202 are locked. At the same time, the movement of the extrusion member 203 drives the two clamping plates 205 to rotate and close, clamping and locking the plate body 位于中间的板体201进行卡接锁定,实现对省煤器部件100进行包裹保护的目的。

[0036] Embodiment 2

[0037] Referring to FIGS. 2-8, a second embodiment of the present invention is different from the first embodiment in that: for an anti-abrasion guard of an H-shaped fin economizer tube, the shape of the plate body 201 is a continuous "丰" character shape, and it is composed of a plurality of horizontal plates 201a and one vertical plate 201b, and the fin 102 is located between adjacent horizontal plates 201a.

[0038] It should be noted that when the plate body 201 is attached to the outer wall of the tube body 101, first, the gap between two adjacent horizontal plates 201a on the plate body 201 is aligned with the fin 102, and then the two horizontal plates 201a at the same height are slowly pulled to both sides along the outer wall of the tube body 101, so that the horizontal plates 201a are attached and sleeved on the outer wall of the tube body 101, and the two horizontal plates 201a at the same height are aligned with each other, thereby fully wrapping the position on the outer wall of the tube body 101 where the fin 102 is not installed.

[0039] Example 3

[0040] Referring to Figures 2-8, a third embodiment of the present invention is shown. This embodiment differs from the second embodiment in that it is an H-shaped fin economizer tube wear-resistant shoe. The protective shell 202 is divided into two parts, each of which includes a central cavity 202a and two mounting cavities 202b. The fins 102 are accommodated in the cavity 202a. The extrusion member 203, transmission member 204, and clamping plate 205 are each provided in two groups and located in the two mounting cavities 202b. The extrusion member 203 includes an arcuate plate 203a that fits against the outer wall of the plate body 201. The outer wall of the arcuate plate 203a is mounted with an inclined block 203b, which slides along a first slide groove 202b-1 in the mounting cavity 202b. Transmission member 204 includes a connecting rod 204a, which is mounted within second slot 202b-2 of mounting cavity 202b. A protrusion 204b is provided on connecting rod 204a, and a first spring 204c is sleeved on the outer wall of connecting rod 204a. A first retaining groove 202b-3 is provided within second slot 202b-2, along which protrusion 204b moves. A first inclined surface 204d is provided at one end of connecting rod 204a, which contacts inclined surface block 203b via first inclined surface 204d. A tapered plug 204e is provided at the other end of connecting rod 204a.

[0041] It should be noted that the curved plate 203a is in contact with the plate body 201 on the outer wall of the tube body 101, and the curved plate 203a is squeezed by the tube body 101 to drive the inclined surface block 203b to move inward. The inclined surface block 203b cooperates with the first inclined surface 204d at one end of the connecting rod 204a, so that the inward movement of the inclined surface block 203b can push the first inclined surface 204d located in the first sliding groove 202b-1 to move outward, thereby moving the connecting block with the first inclined surface 204d at one end outward, and then driving the gear 204f to move. At the same time, the cooperation between the first inclined surface 204d and the inclined surface block 203b causes the connecting rod 204a to move in the opposite direction under the action of the first spring 204c. The connecting rod 204a pushes the inclined surface block 203b in the opposite direction through the first inclined surface 204d, causing the inclined surface block 203b to move outward, thereby allowing the curved plate 203a to move outward and reset.

[0042] The two outer surfaces of the protective shell 202 are each provided with a rack 202c on one side and a tooth groove 202d on the other side. A gear 204f is disposed within the tooth groove 202d, and the rack 202c on one portion of the protective shell 202 is inserted into the tooth groove 202d on the other portion of the protective shell 202. A groove 204f-1 is provided on one side of the gear 204f, into which a tapered plug 204e is inserted. A locking rod 204g is fixedly connected to the other side of the gear 204f. The locking rod 204g is inserted into a locking hole 202e on the side of the tooth groove 202d. A receiving groove 202f is provided on the side of the tooth groove 202d opposite the locking hole 202e, and the gear 204f is located within the receiving groove 202f.

[0043] It should be noted that a conical locking block is provided at one end of locking lever 204g, near gear 204f. The locking block is inserted into lock hole 202e through the conical shape. As the locking block is inserted deeper, the locking block engages and locks with the keyway of lock hole 202e, preventing locking lever 204g from rotating. Conversely, pressing locking lever 204g pushes gear 204f in the opposite direction, pushing locking lever 204g out of lock hole 202, and then pushing and rotating locking lever 204g drives gear 204f to move and rotate, thereby unlocking the two protective shells 202 in the opposite direction.

[0044] Receiving groove 202f is provided at one end of locking hole 202e, and its depth is smaller than the width of gear 204f. This allows gear 204f to remain partially engaged with tooth groove 202d when retracted. This allows gear 204f to move left and right along tooth groove 202d, ensuring it remains engaged with tooth groove 202d and, in turn, with the connected rack 202c. Furthermore, a tapered plug 204e, rotatably mounted on one end of connecting rod 204a, is also located within receiving groove 202f. Inserted into groove 204f-1, it engages and locks with groove 204f-1, allowing it to push gear 204f to move. Meanwhile, gear 204f can drive the tapered plug 204e to rotate without affecting connecting rod 204a.

[0045] In this embodiment, two protective shells 202 are respectively sleeved on the outer walls of two fins 102 at the same height. When the two protective shells 202 are close to the tube body 101, the curved plate 203a on the extrusion member 203 first fits the outer wall of the tube body 101. Then, as the protective shells 202 continue to approach the tube body 101, the curved plate 203a and the inclined block 203b are squeezed and move inward along the first slide groove 202b-1. When the inclined block 203a is pressed against the outer wall of the tube body 101, the curved plate 203a and the inclined block 203b are squeezed and move inward along the first slide groove 202b-1. When the pinion 203b moves inward, it squeezes the first inclined surface 204d at the front end of the plug-in rod 204a located in the second sliding groove 202b-2, so that the plug-in rod 204a can press the first spring 204c along the first limiting groove 202b-3 through the protrusion 204b. The other end of the plug-in rod 204a is inserted into the tooth groove 202d of the gear 204f through the tapered plug 204e, and pushes the gear 204f to move along the tooth groove 202d.

[0046] At the same time, when the left and right parts of the protective shell 202 are plugged into each other, the rack 202c of one part of the protective shell 202 is inserted into the tooth groove 202d of the other part of the protective shell 202. The insertion of the rack 202c drives the gear 204f to rotate. The gear 204f causes the rack 202c and the tooth groove 202d to move synchronously, thereby closing the left and right parts of the protective shell 202 synchronously toward the middle. When the left and right parts of the protective shell 202 are completely attached to the outer wall of the tube body 101, , the gear 204f is pushed from one side of the rack 202c and the tooth groove 202d to the other side, and at the same time, the locking rod 204g on the other side of the gear 204f is inserted into the locking hole 202e, locking the locking rod 204g, so that the gear 204f is locked and cannot rotate. The gear 204f cannot rotate, so that the rack 202c and the tooth groove 202d located on its upper and lower surfaces cannot move, thereby locking the position of the left and right parts of the protective shell 202.

[0047] Example 4

[0048] Referring to Figures 2-8, a fifth embodiment of the present invention is shown. This embodiment differs from the fourth embodiment in that it is an H-shaped fin economizer tube wear-resistant shoe. A clamping plate 205 is rotatably mounted within a rotating cavity 202b-4 of the mounting cavity 202b. Clamping plate 205 is mounted at the outlet of rotating cavity 202b-4 via a rotating shaft. Clamping plate 205 defines an inclined slot 205a. A connecting rod 203c is disposed below the inclined surface block 203b, and connecting rod 203c slides along inclined slot 205a. Two clamping plates 205, upper and lower, are mounted symmetrically within the same rotating cavity 202b-4. A retaining slot 201c is defined on the plate body 201, and clamping plates 205 are clamped in the retaining slot 201c.

[0049] It should be noted that the two splints 205 in the same rotating cavity 202b-4 are connected to each other through a rotating shaft, and the whole is in the shape of a clamp. An inclined groove 205a is provided on each splint 205, and the two inclined grooves 205a are inclined in opposite directions. The connecting rod 203c passes through the two inclined grooves 205a and moves along the two inclined grooves 205a. Therefore, when the inclined block 203b drives the connecting rod 203c to move along the first sliding groove 202b-1, the connecting rod 203c moves in the two inclined grooves 205a, controlling the rear ends of the two splints 205, so that the front ends of the two splints 205 are clamped, thereby clamping the outer wall of the plate body 201.

[0050] In this embodiment, when the left and right parts of the protective shell 202 are synchronously plugged into the middle tube body 101, the curved plates 203a on the left and right parts of the protective shell 202 are squeezed by the outer wall of the tube body 101 and slowly move inward. During the inward movement of the curved plates 203a, the inclined plane blocks 203b are also driven to move inward along the first sliding groove 202b-1. The movement of the inclined plane blocks 203b drives the connecting rod 203c to move. The connecting rod 203c moves in the inclined grooves 205a of the two clamping plates 205, thereby driving the two clamping plates 205 to rotate around the front end rotation axis, and then clamping the two clamping plates 205 on the outer wall of the plate body 201, and the clamping plates 205 are engaged in the clamping grooves 201c, thereby locking the outer wall of the plate body 201 and completing the locking between the protective shell 202 and the plate body 201.

[0051] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An H-shaped fin economizer tube anti-wear shoe, comprising an economizer component (100), comprising a tube body (101) and a plurality of fins (102) mounted on the outer wall of the tube body (101), wherein two fins (102) at the same height form an H shape, characterized in that: It includes a protective component (200) installed on the outer wall of the economizer component (100), which includes a bendable plate body (201) installed on the outer wall of the pipe body (101), and a protective shell (202) sleeved on the outer wall of the fin (102). An extrusion member (203) that fits against the outer wall of the pipe body (101) is arranged inside the protective shell (202). The extrusion member (203) locks the positions of two parts of the protective shell (202) that are inserted into each other at the same height through a transmission member (204), and drives the clamping plate (205) inside the protective shell (202) to clamp the outer wall of the plate body (201), thereby locking the protective shell (202) and the plate body (201).

2. The H-type fin economizer tube anti-wear shoe according to claim 1, characterized in that: The shape of the plate body (201) is a continuous "abundant" character shape, and it is composed of a plurality of horizontal plates (201a) and one vertical plate (201b). The fin (102) is located between adjacent horizontal plates (201a).

3. The H-type fin economizer tube anti-wear shoe according to claim 1 or 2, characterized in that: The protective shell (202) is divided into two parts, and each part includes a cavity (202a) in the middle and installation cavities (202b) on both sides. The fin (102) is received in the cavity (202a), and two sets of the extrusion member (203), the transmission member (204), and the clamping plate (205) are respectively arranged in the two installation cavities (202b).

4. The H-type fin economizer tube anti-wear shoe according to claim 3, characterized in that: The extrusion member (203) includes an arc-shaped plate (203a) that fits against the outer wall of the plate body (201). A slope block (203b) is installed on the outer wall of the arc-shaped plate (203a), and the slope block (203b) slides along a first chute (202b-1) in the installation cavity (202b).

5. The H-type fin economizer tube anti-wear shoe according to claim 4, characterized in that: The transmission member (204) includes an insertion rod (204a) installed in a second chute (202b-2) of the installation cavity (202b). A convex block (204b) is arranged on the insertion rod (204a). A first spring (204c) is sleeved on the outer wall of the insertion rod (204a). A first limiting groove (202b-3) is arranged in the second chute (202b-2), and the convex block (204b) moves along the first limiting groove (202b-3).

6. The H-type fin economizer tube anti-wear shoe according to claim 5, characterized in that: One end of the insertion rod (204a) is provided with a first slope (204d) and is in contact with the slope block (203b) through the first slope (204d). The other end of the insertion rod (204a) is provided with a conical plug (204e).

7. The H-type fin economizer tube anti-wear shoe according to claim 6, characterized in that: Rack teeth (202c) are arranged on one side of the outer surfaces of the two parts of the protective shell (202), and tooth grooves (202d) are opened on the other side. A gear (204f) is arranged inside the tooth groove (202d), and the rack teeth (202c) of one part of the protective shell (202) are inserted into the tooth groove (202d) of the other part of the protective shell (202).

8. The H-type fin economizer tube anti-wear shoe according to claim 7, characterized in that: A groove (204f-1) is provided on one side of the gear (204f), and the conical plug (204e) is inserted into the groove (204f-1). A locking rod (204g) is fixedly connected to the other side of the gear (204f), and the locking rod (204g) is inserted into a locking hole (202e) on the side of the tooth groove (202d). The tooth groove (202d) is provided with a receiving groove (202f) on the side opposite to the locking hole (202e), and the gear (204f) is located in the receiving groove (202f).

9. The H-type fin economizer tube anti-wear shoe according to claim 7 or 8, characterized in that: The clamping plate (205) is rotatably arranged in the rotating cavity (202b-4) of the installation cavity (202b); the clamping plate (205) is installed at the outlet of the rotating cavity (202b-4) via a rotating shaft; the clamping plate (205) is provided with an inclined groove (205a); a connecting rod (203c) is arranged below the inclined surface block (203b); and the connecting rod (203c) slides along the inclined groove (205a).

10. The H-type fin economizer tube anti-wear shoe according to claim 9, characterized in that: Two upper and lower clamping plates (205) are installed in the same rotating cavity (202b-4), and the two clamping plates (205) are symmetrically arranged. A clamping groove (201c) is opened on the plate body (201), and the clamping plate (205) is clamped in the clamping groove (201c).

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