Anti-abrasion device for heat exchange pipeline of boiler economizer

Abstract

The utility model discloses a boiler economizer heat exchange pipeline anti-abrasion device which comprises a heat exchange pipe, a V-shaped anti-abrasion plate is installed on the top of the heat exchange pipe, a plurality of heat exchange fins are installed on the heat exchange pipe and located below the V-shaped anti-abrasion plate, a plurality of installation holes are formed in the V-shaped anti-abrasion plate, the boiler economizer heat exchange pipeline anti-abrasion device further comprises a clamping and blocking strip, an elastic buckle is installed at the bottom of the clamping and blocking strip, and the clamping and blocking strip is connected with the V-shaped anti-abrasion plate. And the elastic buckle is clamped in the mounting hole. The V-shaped anti-abrasion plate is additionally arranged at the top of the heat exchange tube, so that the top of the heat exchange tube is prevented from being impacted and abraded by flue gas and is prevented from being damaged; a plurality of blocking strips are mounted on the V-shaped anti-abrasion plate, so that dust is accumulated on the surface of the V-shaped anti-abrasion plate, the purpose of abrading materials by the materials is achieved, and the loss of the V-shaped anti-abrasion plate is reduced; the clamping strip is mounted at the mounting hole through the elastic buckle, and the inclined block in the elastic buckle is pushed out through the abutting block, so that after the clamping strip is damaged, the inclined block can continuously stop smoke, and the elastic buckle can be continuously pressed downwards to fall off to be replaced with a new clamping strip.

Description

Technical Field

[0001] The utility model relates to the technical field of abrasion prevention devices for heat exchange pipelines of boiler economizers, in particular to abrasion prevention devices for heat exchange pipelines of boiler economizers. Background Art

[0002] The CDQ economizer is part of a boiler system. The economizer is a heating surface composed of steel tubes and spiral fins, typically installed in the flue at the rear of the boiler. Boiler feedwater flows through the tubes, while flue gas flows outside. The feedwater is heated by the economizer and then enters the boiler drum. The economizer utilizes the heat from the low-temperature flue gas at the rear of the boiler flue to heat the feedwater, thereby lowering the exhaust gas temperature and improving the boiler's thermal efficiency. It also reduces the boiler's evaporative heating surface, conserving metal consumption and lowering manufacturing costs.

[0003] In the prior art, the windward surface of the top of the economizer heat exchange pipeline is severely eroded and abraded by the flue gas, causing leakage in the heat exchange pipeline and unplanned shutdown of the dry coke quenching system, which brings great trouble to production. Utility Model Content

[0004] Based on this, it is necessary to provide a boiler economizer heat exchange pipeline anti-corrosion device to address the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a boiler economizer heat exchange pipeline anti-wear device, including a heat exchange tube, a V-shaped anti-wear plate is installed on the top of the heat exchange tube, a plurality of heat exchange fins are installed on the heat exchange tube, the heat exchange fins are located below the V-shaped anti-wear plate, the V-shaped anti-wear plate is provided with a plurality of mounting holes, and also includes a blocking strip, an elastic clip is installed at the bottom of the blocking strip, the elastic clip is clamped in the mounting hole, an inclined block is slidably clamped in the elastic clip, a limiting shell is installed on the V-shaped anti-wear plate, an abutment block is slidably clamped in the limiting shell, a spring is installed in the limiting shell, the output end of the spring is connected to the abutment block, and the abutment block is matched with the oblique block.

[0006] Preferably, the area of ​​the heat exchange tube covered by the V-shaped anti-wear plate is preferably one third.

[0007] Preferably, the material of the V-shaped anti-wear plate is stainless steel S.

[0008] Preferably, the material of the blocking strip is a high-chromium wear-resistant material.

[0009] Preferably, the output end of the abutment block is chamfered.

[0010] Preferably, a card slot is provided in the elastic clip, a card block is mounted on the inclined block, and the card block is slidably engaged in the card slot.

[0011] Compared with the existing technology, this technical solution has at least one of the following beneficial effects:

[0012] By installing a V-shaped anti-wear plate on the top of the heat exchange tube, the top of the heat exchange tube is reduced from being impacted by flue gas and damaged;

[0013] Install a number of blocking strips on the V-shaped anti-wear plate to accumulate dust on the surface of the V-shaped anti-wear plate, so that the material wears the material and reduces the loss of the V-shaped anti-wear plate;

[0014] The blocking strip is installed in the mounting hole by means of an elastic clip, and the oblique block in the elastic clip is pushed out by the abutment block, so that the oblique block can continue to block the smoke after the blocking strip is damaged, and the elastic clip can be further pressed down to make it fall off and then a new blocking strip can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of an embodiment of the present invention;

[0016] Figure 2 This is a front cross-sectional view of an embodiment of the present utility model;

[0017] Figure 3 For an embodiment of the present utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 A three-dimensional diagram of a blocking strip and an elastic buckle according to an embodiment of the present invention;

[0019] In the figure, 1. heat exchange tube; 2. V-shaped anti-wear plate; 3. heat exchange fin; 4. mounting hole; 5. blocking strip; 6. elastic buckle; 7. inclined block; 8. limiting shell; 9. abutment block; 10. spring; 11. slot; 12. block. DETAILED DESCRIPTION

[0020] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] See also Figures 1 to 4The embodiment of the present application provides a boiler economizer heat exchange pipeline anti-wear device, including a heat exchange tube 1, the heat exchange tube 1 is one section of the heat exchange pipeline in the economizer box, a V-shaped anti-wear plate 2 is installed on the top of the heat exchange tube 1, and the V-shaped anti-wear plate 2 is installed by welding or U-shaped clips. Several heat exchange fins 3 are installed on the heat exchange tube 1, and the heat exchange fins 3 are located below the V-shaped anti-wear plate 2. The V-shaped anti-wear plate 2 is provided with several mounting holes 4, and also includes a blocking strip 5, and an elastic clip 6 is installed at the bottom of the blocking strip 5. The elastic clip 6 is a triangular elastic clip in the prior art, and its material is preferably a high-temperature resistant hard rubber material with a certain elasticity. The elastic clip 6 is clamped in the mounting hole 4, and an inclined block 7 is slidably clamped in the elastic clip 6. A limiting shell 8 is installed on the V-shaped anti-wear plate 2, and an abutment block 9 is slidably clamped in the limiting shell 8. A spring 10 is installed in the limiting shell 8, and the output end of the spring 10 is connected to the abutment block 9, and the abutment block 9 is cooperated with the oblique block 7.

[0022] In this embodiment, the direction in which the high-temperature flue gas blows is the top of the heat exchange tube 1, that is, the area covered by the V-shaped anti-wear plate 2, so that the V-shaped anti-wear plate 2 can protect the easily abraded part of the top of the heat exchange tube 1, and the flue gas is guided by the V-shaped anti-wear plate 2 after blowing, collides with the inner wall of the economizer box, and then blows to the several heat exchange fins 3 below the V-shaped anti-wear plate 2, collides with the flue gas directly blown to the heat exchange fins 3, thereby reducing the flue gas flow rate, thereby improving the heat exchange effect; after the flue gas blows onto the V-shaped anti-wear plate 2, it is blocked by the several blocking strips 5 thereon, so that the dust particles contained in the flue gas can cover and accumulate on the surface of the V-shaped anti-wear plate 2, which achieves the purpose of material wearing material and reduces the loss of the V-shaped anti-wear plate 2; and the blocking strips 5 on the flue gas are blocked by the V-shaped anti-wear plate 2. The blocking bar 5 plays a role in intercepting a certain amount of dust while its wear increases, so the blocking bar 5 is arranged to be clamped in the mounting hole 4 on the V-shaped anti-wear plate 2 by the elastic clip 6, and the abutment block 9 is squeezed out by the spring 10 in the limit shell 8, thereby squeezing out the oblique block 7 in the elastic clip 6, so that after the blocking bar 5 is worn, the oblique block 7 can play a certain sealing role on the mounting hole 4, preventing the flue gas from wearing the heat exchange tube 1, and after the blocking bar 5 is worn, the elastic clip 6 at its bottom can continue to move downward in the mounting hole 4, so that the elastic clip 6 squeezes the abutment block 9 and separates it from the oblique block 7, and finally the elastic clip can fall into the gap between the V-shaped anti-wear plate 2 and the heat exchange tube 1. It can be cleaned after multiple replacements.

[0023] In some embodiments, in order to improve the protection effect of the heat exchange tube 1, the V-shaped anti-wear plate 2 is preferably provided to cover one third of the area of ​​the heat exchange tube 1.

[0024] In some embodiments, in order to facilitate the selection of materials for the V-shaped anti-wear plate 2 , the material of the V-shaped anti-wear plate 2 is preferably stainless steel 304S.

[0025] In some embodiments, in order to facilitate the selection of materials for the blocking bar 5 , the material of the blocking bar 5 is preferably a high-chromium wear-resistant material.

[0026] In some embodiments, in order to facilitate the downward movement of the elastic buckle 6 to squeeze out the abutment block 9 after the blocking strip 5 is worn, the output end of the abutment block 9 is set to be chamfered.

[0027] In some embodiments, in order to facilitate the sliding engagement of the inclined block 7 in the elastic snap 6 , a slot 11 is provided in the elastic snap 6 , and a block 12 is installed on the inclined block 7 , and the block 12 is slidably engaged in the slot 11 .

[0028] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A device for preventing abrasion of a heat exchange pipe of a boiler economizer, comprising a heat exchange pipe (1), characterized in that: A V-shaped anti-wear plate (2) is installed on the top of the heat exchange tube (1), and a plurality of heat exchange fins (3) are installed on the heat exchange tube (1). The heat exchange fins (3) are located below the V-shaped anti-wear plate (2). The V-shaped anti-wear plate (2) is provided with a plurality of mounting holes (4). It also includes a blocking strip (5), an elastic snap-fit ​​(6) is installed at the bottom of the blocking strip (5), the elastic snap-fit ​​(6) is snapped into the mounting hole (4), and an inclined block (7) is slidably snapped into the elastic snap-fit ​​(6). A limiting shell (8) is installed on the V-shaped anti-wear plate (2), an abutting block (9) is slidably snapped into the limiting shell (8), a spring (10) is installed in the limiting shell (8), an output end of the spring (10) is connected to the abutting block (9), and the abutting block (9) is matched with the inclined block (7).

2. The boiler economizer heat exchange pipeline anti-corrosion device according to claim 1, characterized in that: The area of ​​the heat exchange tube (1) covered by the V-shaped anti-wear plate (2) is preferably one third.

3. The boiler economizer heat exchange pipeline anti-corrosion device according to claim 1, characterized in that: The material of the V-shaped anti-wear plate (2) is preferably stainless steel 304S.

4. The boiler economizer heat exchange pipeline anti-corrosion device according to claim 1, characterized in that: The material of the blocking strip (5) is preferably a high-chromium wear-resistant material.

5. The boiler economizer heat exchange pipeline anti-corrosion device according to claim 1, characterized in that: The output end of the abutment block (9) is chamfered.

6. The boiler economizer heat exchange pipeline anti-corrosion device according to claim 1, characterized in that: A card slot (11) is provided in the elastic card buckle (6), a card block (12) is mounted on the inclined block (7), and the card block (12) is slidably engaged in the card slot (11).

Images