Vertical economizer with spiral finned tubes

Abstract

The utility model relates to the technical field of vertical coal economizers, and discloses a vertical coal economizer with spiral finned tubes, which comprises a fixing frame, the upper surface of the fixing frame is fixedly connected with a vertical coal economizer body, and the outer surface of the vertical coal economizer body is fixedly connected with a liquid inlet and a liquid outlet. When the local gear rotates, local teeth on the local gear are meshed with the other small gear to drive the two fixing plates to rotate clockwise in the reverse direction, the two fixing plates rotating clockwise can drive the rotating plate to rotate out of gaps of the fins, and therefore impurities in the gaps of the spiral fins are brought out, fall into the bottom wall of the vertical economizer body and are discharged along with a liquid outlet. Through operation of the structure, impurities in the spiral fins can be effectively cleared away, the heat transfer efficiency is improved to a certain degree, and the problem that the service life of equipment is affected due to blockage and corrosion of the impurities is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical economizers, in particular to a vertical economizer containing spiral fin tubes. Background Art

[0002] The vertical economizer is a device installed at the lower part of the flue at the tail of the boiler to recover the waste heat of the exhaust gas. The spiral fins of the vertical economizer may accumulate impurities due to various reasons during use. Generally, the spiral fins are cleaned manually. The cost of manual cleaning of the spiral fins is high, which is not conducive to promotion. If the impurities are not cleaned in time and effectively, the following disadvantages will occur:

[0003] Reduced thermal efficiency: With the accumulation of impurities, dirt and sediment on the fins will hinder the transfer of heat, reduce thermal efficiency, lead to energy waste and increase operating costs, reduce heat dissipation effect: The main function of the fins is to increase the heat exchange area and improve the heat exchange effect. If impurities accumulate on the fins, the heat exchange effect will be seriously affected, which may cause the equipment to fail to achieve the expected heat exchange effect and shorten the life of the equipment: If the impurities are not cleaned in time, it may cause corrosion or damage to the fins and related components, thereby shortening the service life of the equipment. In order to solve these problems, a vertical economizer with spiral finned tubes is needed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a vertical economizer containing spiral fin tubes, which has the advantages of being easy to clean, etc., and solves the problem that the spiral fins of the existing vertical economizer cannot be automatically cleaned.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of facilitating cleaning, the utility model provides the following technical solutions: a vertical economizer containing spiral finned tubes, comprising a fixing frame, the upper surface of which is fixedly connected to a vertical economizer body, the outer surface of which is fixedly connected to a liquid inlet and a liquid outlet, and a heat exchange pipe is fixedly connected inside the vertical economizer body;

[0008] Wherein, a fixed sleeve on the outer surface of the heat exchange pipe is provided with spiral fins, and an automatic cleaning device is provided on the heat exchange pipe, and the automatic cleaning device comprises a rotating sleeve, and the rotating sleeve is fixedly connected to the upper end of the heat exchange pipe;

[0009] Among them, the lower end fixed sleeve of the heat exchange pipe is provided with a second rotating sleeve, and two fixed plates are fixedly connected between the second rotating sleeve and the rotating sleeve, and gap cleaning devices are arranged on the fixed plates.

[0010] Preferably, the outer surface fixed sleeve of the rotating sleeve is provided with a main gear, the upper end fixed sleeve of the vertical economizer body is provided with a gear fixing plate, the upper surface of the gear fixing plate is rotatably connected to two small gears, and the two small gears are meshed with the main gear.

[0011] Preferably, the upper surface of the gear fixing plate is rotatably connected with a local gear, and the local parts on the local gear are respectively meshed with two small gears, and the lower surface of the gear fixing plate is fixedly connected with a motor, and the output shaft of the motor is fixedly inserted into the local gear.

[0012] Preferably, the two gap cleaning devices are evenly arranged in a circular array, and the gap cleaning device includes a plurality of rotating plates, and the plurality of rotating plates are rotatably connected to the inner surface of the fixed plate, and the plurality of rotating plates are evenly distributed at equal intervals, and the plurality of rotating plates extend into the gaps between the fins of the spiral fins.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a vertical economizer with spiral finned tubes, which has the following beneficial effects:

[0015] 1. For the vertical economizer with spiral fin tubes, when the impurities in the gaps of the spiral fins accumulate to a certain extent, the motor will be started, and the motor will drive the local gear on it to rotate. When the local gear rotates, the local teeth on it will mesh with a small gear, thereby driving the main gear to rotate. When the main gear rotates, it will drive the two gap cleaning devices on the rotating sleeve to rotate counterclockwise at the same time. The two fixed plates rotating counterclockwise will drive the rotating plates to rotate into the gaps between the fins. At the same time, the rotating two fixed plates will rotate with the heat exchange pipe as the axis, so that the gaps between the spiral fins The impurities in the gap of the spiral fin are cleaned, and when the local gear rotates, the local teeth on it mesh with another small gear to drive the two fixed plates to rotate clockwise in the opposite direction. The two fixed plates rotating clockwise will drive the rotating plate to rotate out of the gap of the fin, thereby bringing out the impurities in the gap of the spiral fin, falling into the bottom wall of the vertical economizer body, and being discharged through the liquid outlet. Through the operation of the above structure, the impurities in the spiral fins can be effectively cleaned, which improves the heat transfer efficiency to a certain extent and prevents the problem of impurity clogging and corrosion affecting the service life of the equipment.

[0016] 2. The vertical economizer containing spiral finned tubes reduces the labor intensity of manual cleaning by setting up an automatic cleaning device, avoids the trouble of manual cleaning of spiral fins, reduces unnecessary labor costs, and improves the safety of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the automatic cleaning device of the utility model.

[0020] In the figure: 1. fixed frame; 2. vertical economizer body; 3. heat exchange pipe; 4. rotating sleeve; 5. second rotating sleeve; 6. spiral fin; 7. fixed plate; 8. rotating plate; 9. limit block; 10. brush; 11. main gear; 12. gear fixing plate; 13. small gear; 14. local gear; 15. motor. DETAILED DESCRIPTION

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

[0022] See also Figure 1-3 The utility model provides a new technical solution: a vertical economizer with spiral finned tubes, comprising a fixing frame 1, a vertical economizer body 2 is fixedly connected to the upper surface of the fixing frame 1, a liquid inlet and a liquid outlet are fixedly connected to the outer surface of the vertical economizer body 2, and a heat exchange pipe 3 is fixedly connected inside the vertical economizer body 2;

[0023] Furthermore, the outer surface of the heat exchange pipe 3 is fixedly sleeved with spiral fins 6, and the heat exchange pipe 3 is provided with an automatic cleaning device, which includes a rotating sleeve 4, and the rotating sleeve 4 is fixedly connected to the upper end of the heat exchange pipe 3;

[0024] Furthermore, the lower fixed sleeve of the heat exchange pipe 3 is provided with a second rotating sleeve 5 , and two fixed plates 7 are fixedly connected between the second rotating sleeve 5 and the rotating sleeve 4 , and the fixed plates 7 are provided with gap cleaning devices.

[0025] Furthermore, a main gear 11 is fixedly mounted on the outer surface of the rotating sleeve 4, and a gear fixing plate 12 is fixedly mounted on the upper end of the vertical economizer body 2. Two pinions 13 are rotatably connected to the upper surface of the gear fixing plate 12, and both pinions 13 are meshedly connected to the main gear 11.

[0026] Furthermore, a local gear 14 is rotatably connected to the upper surface of the gear fixing plate 12 , and the local parts of the local gear 14 are respectively meshed with the two pinions 13 . A motor 15 is fixedly connected to the lower surface of the gear fixing plate 12 , and the output shaft of the motor 15 is fixedly inserted into the local gear 14 .

[0027] Furthermore, the two gap cleaning devices are evenly arranged in a circular array, and the gap cleaning device includes a plurality of rotating plates 8, and the plurality of rotating plates 8 are rotatably connected to the inner surface of the fixed plate 7, and the plurality of rotating plates 8 are evenly distributed at equal intervals, and the plurality of rotating plates 8 extend into the gaps between the fins of the spiral fins 6.

[0028] Furthermore, a plurality of brushes 10 are fixedly connected to the outer surface of the rotating plate 8 , and the plurality of brushes 10 are evenly distributed at equal intervals. A limit block 9 for limiting the rotation angle of the rotating plate 8 is fixedly connected to the opposite sides of the two fixed plates 7 .

[0029] Furthermore, when in use, when impurities in the fin gaps of the spiral fin 6 accumulate to a certain extent, by starting the motor 15, the motor 15 will drive the local gear 14 thereon to rotate. When the local gear 14 rotates, the local teeth thereon will mesh with a small gear 13, thereby driving the main gear 11 to rotate. When the main gear 11 rotates, it will drive the two gap cleaning devices on the rotating sleeve 4 to rotate counterclockwise at the same time. The two counterclockwise rotating fixed plates 7 will drive the rotating plate 8 to rotate into the gaps between the fins. At the same time, the rotating two fixed plates 7 will rotate with the heat exchange pipe 3 as the axis, and the spiral fin 6 The impurities in the gap between the spiral fins 6 are cleaned, and when the local gear 14 rotates, the local teeth on it mesh with another small gear 13 to drive the two fixed plates 7 to rotate clockwise in the opposite direction. The two fixed plates 7 rotating clockwise will drive the rotating plate 8 to rotate out of the gap between the fins, thereby bringing out the impurities in the gap between the spiral fins 6 and falling into the bottom wall of the vertical economizer body 2 and being discharged through the liquid outlet. Through the operation of the above structure, the impurities in the spiral fins 6 can be effectively cleaned, which improves the heat transfer efficiency to a certain extent and prevents the problem of clogging and corrosion of impurities affecting the service life of the equipment.

[0030] Furthermore, the automatic cleaning device is provided to reduce the labor intensity of manual cleaning, avoid the trouble of manual cleaning of the spiral fins 6, reduce unnecessary labor costs, and improve the safety of equipment operation.

[0031] Working principle: When in use, when impurities in the fin gap of the spiral fin 6 accumulate to a certain extent, by starting the motor 15, the motor 15 will drive the local gear 14 thereon to rotate. When the local gear 14 rotates, the local teeth on it will mesh with a small gear 13, thereby driving the main gear 11 to rotate. When the main gear 11 rotates, it will drive the two gap cleaning devices on the rotating sleeve 4 to rotate counterclockwise at the same time. The two counterclockwise rotating fixed plates 7 will drive the rotating plate 8 to rotate into the gap between the fins. At the same time, the rotating two fixed plates 7 will rotate with the heat exchange pipe 3 as the axis, and the spiral fin 6 The impurities in the gap between the spiral fins 6 are cleaned, and when the local gear 14 rotates, the local teeth on it mesh with another small gear 13 to drive the two fixed plates 7 to rotate clockwise in the opposite direction. The two fixed plates 7 rotating clockwise will drive the rotating plate 8 to rotate out of the gap between the fins, thereby bringing out the impurities in the gap between the spiral fins 6 and falling into the bottom wall of the vertical economizer body 2 and being discharged through the liquid outlet. Through the operation of the above structure, the impurities in the spiral fins 6 can be effectively cleaned, which improves the heat transfer efficiency to a certain extent and prevents the problem of clogging and corrosion of impurities affecting the service life of the equipment.

[0032] Furthermore, the automatic cleaning device is provided to reduce the labor intensity of manual cleaning, avoid the trouble of manual cleaning of the spiral fins 6, reduce unnecessary labor costs, and improve the safety of equipment operation.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical economizer with spiral finned tubes, comprising a fixing frame (1), the upper surface of the fixing frame (1) being fixedly connected to a vertical economizer body (2), the outer surface of the vertical economizer body (2) being fixedly connected to a liquid inlet and a liquid outlet, characterized in that: A heat exchange pipe (3) is fixedly connected inside the vertical economizer body (2); The outer surface of the heat exchange pipe (3) is fixedly sleeved with spiral fins (6), and the heat exchange pipe (3) is provided with an automatic cleaning device, which comprises a rotating sleeve (4), and the rotating sleeve (4) is fixedly connected to the upper end of the heat exchange pipe (3); The lower fixed sleeve of the heat exchange pipe (3) is provided with a second rotating sleeve (5), and two fixed plates (7) are fixedly connected between the second rotating sleeve (5) and the rotating sleeve (4), and the fixed plates (7) are provided with gap cleaning devices.

2. A vertical economizer with spiral finned tubes according to claim 1, characterized in that: The outer surface of the rotating sleeve (4) is fixed with a main gear (11), the upper end of the vertical economizer body (2) is fixed with a gear fixing plate (12), the upper surface of the gear fixing plate (12) is rotatably connected with two small gears (13), and the two small gears (13) are meshed with the main gear (11).

3. A vertical economizer with spiral finned tubes according to claim 2, characterized in that: The upper surface of the gear fixing plate (12) is rotatably connected to a partial gear (14), and the partial parts of the partial gear (14) are respectively meshed with two small gears (13). The lower surface of the gear fixing plate (12) is fixedly connected to a motor (15), and the output shaft of the motor (15) is fixedly inserted into the partial gear (14).

4. A vertical economizer with spiral finned tubes according to claim 1, characterized in that: The two gap cleaning devices are evenly arranged in a circular array, and the gap cleaning devices include a plurality of rotating plates (8), and the plurality of rotating plates (8) are all rotatably connected to the inner surface of the fixed plate (7), and the plurality of rotating plates (8) are evenly distributed at equal distances, and the plurality of rotating plates (8) extend into the gaps between the fins of the spiral fins (6).

5. A vertical economizer with spiral finned tubes according to claim 4, characterized in that: The outer surface of the rotating plate (8) is fixedly connected to a plurality of brushes (10), the plurality of brushes (10) are evenly distributed at equal intervals, and the opposite sides of the two fixed plates (7) are fixedly connected to limit blocks (9) for limiting the rotation angle of the rotating plate (8).

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