CN216431786U

CN216431786U - Anti-abrasion device for flue gas heat exchanger of thermal power plant

Info

Publication number: CN216431786U
Application number: CN202123130361.2U
Authority: CN
Inventors: 张天翼; 杨正科; 杨玉涛
Original assignee: Jinan Shanyuan Environmental Protection Technology Co ltd
Current assignee: Jinan Shanyuan Environmental Protection Technology Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-03
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a be used for flue gas heat exchanger abrasionproof of thermal power factory to decrease device, protect tile, intermediate support board, sleeve pipe, second mounting panel including first mounting panel, heat exchange tube, a plurality of heat transfer fin, two abrasionproof comb types, the heat exchange tube is located between first mounting panel and the second mounting panel, the sleeve pipe cup joints in the surface of heat exchange tube, the intermediate support board cup joints in the sheathed tube surface, two the abrasionproof comb type protects the both sides that the tile is located the intermediate support board respectively, two the abrasionproof comb type protects the equal fixed cup joint in the sheathed tube surface of tile, the surface that the tile was protected to the abrasionproof comb type is provided with a plurality of open slots. The utility model discloses mainly be applied to flue gas heat exchangers such as thermal power factory low temperature economizer, flue gas reheater, can prevent that the flue gas from directly scouring away the heat exchange tube and cause the heat exchange tube pipe wall attenuation, encase the overwhelming majority with the heat exchange tube, can meet the wearing and tearing of cigarette side heat exchange tube by a wide margin, reduce the heat exchange tube and leak the risk, practice thrift the later maintenance cost.

Description

Anti-abrasion device for flue gas heat exchanger of thermal power plant

Technical Field

The utility model relates to a boiler technical field especially relates to a be used for flue gas heat exchanger abrasionproof of thermal power factory to decrease device.

Background

The thermal power plant is one of the most important power supply places in China at present, the boiler is one of the most important devices of the thermal power plant, and the operation stability of the boiler plays an important role in stable operation of the power plant. However, during the actual operation of the boiler in the thermal power plant, various faults occur occasionally; it can be said that the causes of boilers in various accidents of thermal power plants are most, and the failure of the heating surface of the boiler is an important cause of boiler accidents. Therefore, each power plant has higher and higher attention to the problem of failure of the heating surface of the boiler, and how to effectively prevent the failure of the heating surface of the boiler has very important practical significance.

The boiler heat exchange surface mainly refers to a flue gas heat exchanger such as a water-cooled wall, a superheater, an economizer, a reheater and the like of the boiler. The flue gas heat exchanger mainly comprises heat exchange pipes with various diameters, flue gas is arranged outside the flue gas heat exchanger, heat exchange quantity is transferred to high-pressure gas-water medium flowing inside the flue gas heat exchanger through radiation or convection, once a heating surface of a thermal power plant leaks, a furnace shutdown rush-repair measure is adopted, normal power generation of the power plant can be seriously influenced, certain economic loss is caused, the leaked heat exchanger is isolated, the flue gas normally passes through a flue, water leaked in the flue is mixed with the flue gas, the heat exchanger is corroded, the damage of the heat exchanger is accelerated, corresponding economic loss is caused, and the water leaked by the heat exchanger also causes adverse effects of different degrees on equipment such as an air preheater, an electric dust collector, an induced draft fan and the like. The wear leakage of the heat exchanger found at present mainly occurs on the heat exchange tube at the smoke facing side of the heat exchanger.

In view of this, the present inventors have invented the wear-resistant device for the flue gas heat exchanger of the thermal power plant to protect the heat exchange tubes on the smoke-facing side, such as the low-temperature economizer and the flue gas reheater, so as to achieve the purpose of preventing the heat exchanger from leaking.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a wear-resistant device for a flue gas heat exchanger of a thermal power plant.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a be used for thermal power factory flue gas heat exchanger abrasionproof to decrease device, includes first mounting panel, heat exchange tube, a plurality of heat transfer fin, two abrasionproof comb types protect tile, intermediate support board, sleeve pipe, second mounting panel, the heat exchange tube is located between first mounting panel and the second mounting panel, the sleeve pipe cup joints in the surface of heat exchange tube, intermediate support board cup joints in sheathed tube surface, two the abrasionproof comb type protects the both sides that the tile is located intermediate support board respectively, two the abrasionproof comb type protects the tile all fixed cup joint in sheathed tube surface, the abrasionproof comb type protects the surface of tile and is provided with a plurality of open slots, and is a plurality of heat transfer fin's one end is pegged graft respectively inside a plurality of open slots of abrasionproof comb type protection tile surface.

As a further description of the above technical solution:

the interval between a plurality of open slots of abrasionproof comb type protection tile surface is unanimous, and a plurality of open slots and a plurality of radiating fin that abrasionproof comb type protection tile surface is located the inside one end of a plurality of open slots and all is the setting of half arc.

As a further description of the above technical solution:

one end of the wear-resistant comb-shaped protective tile is connected with one side of the first mounting plate in a spot welding mode.

As a further description of the above technical solution:

the distance between the wear-resistant comb-shaped protective tile and the first mounting plate of the wallboard is 0.5 mm.

As a further description of the above technical solution:

the wear-resistant comb-shaped protective tile covers the sleeve in length.

As a further description of the above technical solution:

the wear-resistant comb-shaped protective tile is made of 12Cr13 alloy steel.

As a further description of the above technical solution:

the heat exchange tube is characterized in that a fixing sleeve is arranged between one end, close to the second mounting plate, of the heat exchange tube and the second mounting plate, and the heat exchange tube and the second mounting plate are fixedly connected through the fixing sleeve.

The utility model discloses following beneficial effect has:

the utility model discloses mainly be applied to flue gas heat exchangers such as thermal power factory low temperature economizer, flue gas reheater, can prevent that the flue gas from directly scouring away the heat exchange tube and cause the heat exchange tube pipe wall attenuation, encase the overwhelming majority with the heat exchange tube, can meet the wearing and tearing of cigarette side heat exchange tube by a wide margin, reduce the heat exchange tube and leak the risk, practice thrift the later maintenance cost.

Drawings

Fig. 1 is a front view of an anti-abrasion device for a flue gas heat exchanger of a thermal power plant according to the present invention;

fig. 2 is a partial schematic view of an anti-abrasion device for a flue gas heat exchanger of a thermal power plant according to the present invention;

fig. 3 is the utility model provides a cross-sectional view that is used for flue gas heat exchanger abrasionproof of thermal power factory to decrease device.

Illustration of the drawings:

1. a first mounting plate; 2. a heat exchange pipe; 3. heat exchange fins; 4. wear-resistant comb-shaped protective tiles; 5. a middle support plate; 6. a sleeve; 7. a second mounting plate; 8. and (4) fixing sleeves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a be used for flue gas heat exchanger abrasionproof of thermal power factory to decrease device, including first mounting panel 1, heat exchange tube 2, a plurality of heat transfer fin 3, two abrasionproof comb type protect tile 4, intermediate support plate 5, sleeve pipe 6, second mounting panel 7, heat exchange tube 2 is located between first mounting panel 1 and the second mounting panel 7, sleeve pipe 6 cup joints in heat exchange tube 2's surface, intermediate support plate 5 cup joints in sleeve pipe 6's surface, two abrasionproof comb type protect tile 4 and are located intermediate support plate 5's both sides respectively, two abrasionproof comb type protect tile 4 all fixed cup joint in sleeve pipe 6's surface, the abrasionproof comb type protects tile 4's surface and is provided with a plurality of open slots, the one end of a plurality of heat transfer fin 3 is pegged graft respectively inside a plurality of open slots of abrasionproof comb type protect tile 4 surface.

The spaces among the open slots on the outer surface of the anti-abrasion comb-shaped protective tile 4 are consistent, and the open slots on the outer surface of the anti-abrasion comb-shaped protective tile 4 and one ends of the heat exchange fins 3 positioned inside the open slots are arranged in a semi-arc shape, so that the insertion is convenient; one end of the wear-resistant comb-shaped protective tile 4 is connected with one side of the first mounting plate 1 in a spot welding manner; the distance between the wear-resistant comb-shaped protective tile 4 and the first mounting plate of the wallboard is 10.5 mm; the length of the wear-resistant comb-shaped protective tile 4 covers the sleeve 6; the wear-resistant comb-shaped protective tile 4 is made of 12Cr13 alloy steel and has high wear resistance; the heat exchange tube 2 is provided with a fixing sleeve 8 between one end close to the second mounting plate 7 and the second mounting plate 7, and the heat exchange tube 2 and the second mounting plate 7 are fixedly connected through the fixing sleeve 8 so as to be stable and fixed.

The working principle is as follows: when entering the heat exchanger, the flue gas is beaten on the anti-abrasion comb-shaped protective tile 4, so that the heat exchange tube 2 is protected from being washed away by the flue gas, and the leakage of the heat exchanger is prevented.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a be used for flue gas heat exchanger abrasionproof of thermal power factory decreases device which characterized in that: comprises a first mounting plate (1), a heat exchange tube (2), a plurality of heat exchange fins (3), two anti-abrasion comb-shaped protective tiles (4), a middle support plate (5), a sleeve (6) and a second mounting plate (7), the heat exchange tube (2) is positioned between the first mounting plate (1) and the second mounting plate (7), the sleeve (6) is sleeved on the outer surface of the heat exchange tube (2), the intermediate support plate (5) is sleeved on the outer surface of the sleeve (6), the two wear-resistant comb-shaped protective tiles (4) are respectively positioned at two sides of the intermediate support plate (5), the two wear-resistant comb-shaped protective tiles (4) are fixedly sleeved on the outer surface of the sleeve (6), the outer surface of the anti-abrasion comb-shaped protective tile (4) is provided with a plurality of open grooves, and one ends of the heat exchange fins (3) are respectively inserted into the open grooves on the outer surface of the anti-abrasion comb-shaped protective tile (4).

2. The wear prevention device for the flue gas heat exchanger of the thermal power plant of claim 1, wherein: the space between the plurality of open slots on the outer surface of the anti-abrasion comb-shaped protective tile (4) is consistent, and the ends, located inside the plurality of open slots, of the plurality of open slots and the plurality of heat exchange fins (3) on the outer surface of the anti-abrasion comb-shaped protective tile (4) are all arranged in a semi-arc shape.

3. The wear prevention device for the flue gas heat exchanger of the thermal power plant of claim 1, wherein: one end of the wear-resistant comb-shaped protective tile (4) is connected with one side of the first mounting plate (1) in a spot welding mode.

4. The wear prevention device for the flue gas heat exchanger of the thermal power plant of claim 1, wherein: the distance between the wear-resistant comb-shaped protective tile (4) and the first mounting plate (1) of the wallboard is 0.5 mm.

5. The wear prevention device for the flue gas heat exchanger of the thermal power plant of claim 1, wherein: the wear-resistant comb-shaped protective tile (4) covers the sleeve (6) in length.

6. The wear prevention device for the flue gas heat exchanger of the thermal power plant of claim 1, wherein: the wear-resistant comb-shaped protective tile (4) is made of 12Cr13 alloy steel.

7. The wear prevention device for the flue gas heat exchanger of the thermal power plant of claim 1, wherein: set up fixed cover (8) between one end that is close to second mounting panel (7) of heat exchange tube (2) and second mounting panel (7), through fixed cover (8) fixed connection between heat exchange tube (2) and second mounting panel (7).