CN212720925U - Waste heat boiler for waste heat power generation of steel mill - Google Patents
Waste heat boiler for waste heat power generation of steel mill Download PDFInfo
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- CN212720925U CN212720925U CN202021559436.1U CN202021559436U CN212720925U CN 212720925 U CN212720925 U CN 212720925U CN 202021559436 U CN202021559436 U CN 202021559436U CN 212720925 U CN212720925 U CN 212720925U
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- shaped locking
- heat exchange
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- sliding sleeve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses a waste heat boiler for steel mill waste heat power generation, which comprises a boiler body, a heat exchange tube, an air inlet flue, an air outlet flue and an ash bucket, wherein the heat exchange tube is provided with a sweeping plate, the sweeping plate is provided with a lifting ring, the sweeping plate is provided with a plurality of first through holes, a sliding sleeve is sleeved in each first through hole, and the outer wall of the sliding sleeve is provided with two L-shaped locking blocks; two fan-shaped locking grooves are formed in the outer side of the first through hole, an arc-shaped channel is formed in the bottom of the inner arc groove wall of each fan-shaped locking groove, and openings for inserting the L-shaped locking blocks are formed in the two inner arc groove walls; and a steel wire rope is arranged on the lifting lug, the steel wire rope is wound on the winding drum, and the winding drum is in transmission connection with the motor. This scheme can be with the dust clean up that adsorbs on the heat exchange tube, makes the contact that high temperature flue gas and heat exchange tube can be better, has improved heat exchange efficiency. Meanwhile, the sliding sleeve on the cleaning plate is simple and convenient to replace, only the damaged sliding sleeve needs to be replaced, the whole cleaning plate does not need to be replaced, and the use cost can be effectively reduced.
Description
Technical Field
The utility model relates to a waste heat boiler technical field especially relates to a waste heat boiler for steel mill waste heat power generation.
Background
The steelworks can produce a large amount of high temperature flue gas in smelting production, there is a large amount of waste heat in these high temperature flue gases, consequently, the steelworks can carry out recycle with the high temperature flue gas that produces, waste heat in the utilization high temperature flue gas heats exhaust-heat boiler, make the water in the exhaust-heat boiler become high-temperature high-pressure steam, high-temperature high-pressure steam passes through the pipeline and supplies with generating set, high-temperature high-pressure steam can make the steam turbine among the generating set drive the generator electricity generation, thereby the realization is to the recycle of high temperature flue gas and generate electricity. However, a large amount of dust still exists in the high-temperature flue gas, and when the high-temperature flue gas is introduced into the waste heat boiler, the dust also enters the waste heat boiler, and the dust is adsorbed on a heat exchange tube in the waste heat boiler, so that the scaling phenomenon is caused, the heat exchange efficiency is influenced, and the efficiency of waste heat recovery is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a waste heat boiler for steel mill cogeneration to the not enough of above-mentioned prior art.
In order to solve the above problems, the utility model adopts the following technical proposal:
a waste heat boiler for steel mill waste heat power generation comprises a boiler body, a heat exchange tube, an air inlet flue, an air outlet flue and an ash bucket, wherein a cleaning device is arranged on the heat exchange tube and comprises a cleaning plate and a driving device, the cleaning plate is arranged inside the boiler body and slides along the length direction of the heat exchange tube, lifting rings are arranged at four corners of the cleaning plate, a plurality of first through holes penetrating through the cleaning plate are formed in a plate body of the cleaning plate, a sliding sleeve is sleeved in each first through hole and is of a circular structure formed by connecting two semicircular arc-shaped plates end to end, and two L-shaped locking blocks are oppositely arranged on the outer wall of the sliding sleeve;
the outer side of the first through hole is downwards concave based on the upper surface of the cleaning plate to form two fan-shaped locking grooves, the two fan-shaped locking grooves are arranged in a central symmetry mode along the axis of the first through hole, the bottom of the inner arc groove wall of the two fan-shaped locking grooves is provided with an arc-shaped channel penetrating through the fan-shaped locking grooves and the first through hole, and the two inner arc groove walls are both provided with openings for inserting L-shaped locking blocks;
the two L-shaped locking blocks are respectively inserted into the two fan-shaped locking grooves and slide along the fan-shaped locking grooves, the cross rod part of each L-shaped locking block is positioned in the arc-shaped channel, and the vertical rod part of each L-shaped locking block is positioned in the fan-shaped locking groove;
the driving device comprises a winding drum, a motor and a steel wire rope, the winding drum is arranged on the upper portion of the boiler body through a first support, the motor is arranged on the upper portion of the boiler body through a second support, an output shaft of the motor is fixedly connected with a rotating shaft of the winding drum, one end of the steel wire rope is fixedly connected with a drum body of the winding drum, and the other end of the steel wire rope is fixedly connected with the hanging ring.
Furthermore, a filter screen is arranged in the air inlet flue, so that larger particles in high-temperature smoke can be filtered.
Further, the heat exchange tube is a coiled tube.
Furthermore, a plurality of second through holes penetrating through the cleaning plate are formed in the plate body of the cleaning plate, so that high-temperature flue gas can flow more smoothly in the waste heat boiler.
Furthermore, the inner wall of the sliding sleeve is fixedly provided with a hairbrush, so that the dust removal effect on the surface of the heat exchange pipe is better.
Furthermore, the lower end face of the cleaning plate is fixedly provided with the balancing weight, so that the cleaning plate is smoother in the downward sliding process, and the phenomenon of blocking cannot occur.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model discloses can be with adsorbing the dust clean up on the heat exchange tube, make the contact that high temperature flue gas and heat exchange tube can be better, improve heat exchange efficiency, the utilization that can be better to the waste heat in the high temperature flue gas. Meanwhile, the sliding sleeve on the cleaning plate is simple and convenient to replace, only the damaged sliding sleeve needs to be replaced, the whole cleaning plate does not need to be replaced, and the use cost can be effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the cleaning plate structure of the present invention;
FIG. 3 is a schematic structural view of the sweeping board of the present invention for removing the sliding sleeve;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a schematic view of the sliding sleeve structure of the present invention;
fig. 6 is a schematic structural diagram of the waste heat boiler, the steam turbine and the generator of the present invention.
In the figure: 1 is boiler body, 2 is the heat exchange tube, 3 is the flue of admitting air, 4 is the flue of giving vent to anger, 5 is the ash bucket, 6 is the cleaning plate, 7 is rings, 8 is first through-hole, 9 is the sliding sleeve, 10 is L type latch segment, 11 is fan-shaped locking groove, 12 is the arc passageway, 13 is the winding section of thick bamboo, 14 is the motor, 15 is wire rope, 16 is first support, 17 is the second support, 18 is the filter screen, 19 is the second through-hole, 20 is the brush, 21 is the balancing weight, 22 is the steam turbine, 23 is the generator.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-5, a waste heat boiler for steel mill waste heat power generation comprises a boiler body 1, a heat exchange tube 2, an air inlet flue 3, an air outlet flue 4 and an ash bucket 5, wherein a cleaning device is arranged on the heat exchange tube 2, the cleaning device comprises a cleaning plate 6 and a driving device, the cleaning plate 6 is arranged inside the boiler body 1, the cleaning plate 6 slides along the length direction of the heat exchange tube 2, lifting rings 7 are arranged at four corners of the cleaning plate 6, a plurality of first through holes 8 penetrating through the cleaning plate 6 are arranged on a plate body of the cleaning plate 6, a sliding sleeve 9 is sleeved in each first through hole 8, the sliding sleeve 9 is sleeved outside the heat exchange tube 2, the sliding sleeve 9 is a circular structure formed by connecting two semicircular arc plates end to end, and two L-shaped locking blocks 10 are oppositely arranged on the outer wall of the sliding sleeve 9;
the outer side of the first through hole 8 is downwards concave based on the upper surface of the sweeping plate 6 to form two fan-shaped locking grooves 11, the two fan-shaped locking grooves 11 are arranged in a central symmetry manner along the axis of the first through hole 8, the bottom of the inner arc groove wall of the two fan-shaped locking grooves 11 is provided with an arc-shaped channel 12 penetrating through the fan-shaped locking grooves 11 and the first through hole 8, and the two inner arc groove walls are both provided with openings for inserting L-shaped locking blocks;
the two L-shaped locking blocks 10 are respectively inserted into the two fan-shaped locking grooves 11 and slide along the fan-shaped locking grooves 11, the cross rod part of each L-shaped locking block 10 is positioned in the arc-shaped channel 12, and the vertical rod part of each L-shaped locking block 10 is positioned in the fan-shaped locking groove 11;
the driving device comprises a winding drum 13, a motor 14 and a steel wire rope 15, the winding drum 13 is arranged on the upper portion of the boiler body 1 through a first support 16, the motor 14 is arranged on the upper portion of the boiler body 1 through a second support 17, an output shaft of the motor 14 is fixedly connected with a rotating shaft of the winding drum 13, one end of the steel wire rope 15 is fixedly connected with a drum body of the winding drum 13, and the other end of the steel wire rope is fixedly connected with the hanging ring 7.
Further, a filter screen 18 is arranged in the air intake flue 3.
Further, the heat exchange tube 2 is a coiled tube.
Furthermore, a plurality of second through holes 19 penetrating through the cleaning plate 6 are formed in the plate body of the cleaning plate 6.
Further, a brush 20 is fixedly arranged on the inner wall of the sliding sleeve 9.
Furthermore, a counterweight 21 is fixedly arranged on the lower end surface of the cleaning plate 6.
The working principle is as follows: high-temperature flue gas generated in the production process of a steel mill enters the boiler body 1 through the air inlet flue 3, and the filter screen 18 can filter out larger particulate matters in the high-temperature flue gas, so that the gas entering the boiler body 1 is cleaner; high temperature flue gas can contact with heat exchange tube 2 in getting into boiler body 1 back, heats the water in the heat exchange tube 2 into high temperature high pressure steam, and steam gets into generating set and generates electricity, and the high temperature flue gas after accomplishing the heat transfer can cool down into low temperature flue gas, and the low temperature flue gas is discharged from giving vent to anger flue 4, accomplishes the utilization to the waste heat.
And still can have partly more tiny dust in the high temperature flue gas, the dust can adsorb on heat exchange tube 2, needs will adsorb the dust on heat exchange tube 2 this moment and clears away, improves heat exchange efficiency. In cleaning the in-process and putting into first through-hole 8 successively with two semi-circular arcs of sliding sleeve 9, L type latch segment 10 inserts in the opening on the fan-shaped locking groove 11, then rotates sliding sleeve 9, and the horizontal pole portion of L type latch segment 10 slides along arc passageway 12, and the montant portion of L type latch segment 10 slides along fan-shaped locking groove 11, establishes L type latch segment 10 card in fan-shaped locking groove 11, brush 20 and heat exchange tube 2's pipe wall butt, this kind of setting method installation with tear open and trade simple and convenient, only need change the sliding sleeve 9 that damages after one of them sliding sleeve 9 damages, need not to change whole cleaning plate 6, more economical and practical. After the installation is finished, the motor 14 is started, the motor continuously rotates forwards and backwards to drive the winding drum 13 to rotate forwards and backwards, so that the steel wire rope 15 is continuously released and retracted, when the steel wire rope 15 is released, the sweeping board 6 slides downwards under the action of gravity, the brush 20 brushes away dust on the pipe wall of the heat exchange pipe 2, and the lower part of the sweeping board 6 is provided with the balancing weight 21 to prevent the sweeping board 6 from being blocked in the falling process; when the steel wire rope 15 is withdrawn, the sweeping plate 6 slides upwards, and the brush 20 can also brush off dust on the heat exchange tube 2, so that the heat exchange tube 2 is cleaner; the dust that drops falls into ash bucket 5 because gravity acts on in, when accumulating to a certain extent, the staff clears away the dust in ash bucket 5, is convenient for to the maintenance of equipment, increase of service life. Water in the heat exchange tube 2 is heated by high-temperature flue gas and then is changed into high-temperature and high-pressure steam, the steam is conveyed to a steam turbine 22 in a subsequent generator set through a pipeline, the steam turbine 22 drives a generator 23 to work for generating electricity, the working principle of the steam turbine 22 and the working principle of the generator 23 are the prior art, and details are not repeated here.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (6)
1. The waste heat boiler for the steel mill waste heat power generation comprises a boiler body (1), a heat exchange tube (2), an air inlet flue (3), an air outlet flue (4) and an ash bucket (5), and is characterized in that a cleaning device is arranged on the heat exchange tube (2), the cleaning device comprises a cleaning plate (6) and a driving device, the cleaning plate (6) is arranged inside the boiler body (1), the cleaning plate (6) slides along the length direction of the heat exchange tube (2), lifting rings (7) are arranged at four corners of the cleaning plate (6), a plurality of first through holes (8) penetrating through the cleaning plate (6) are formed in the plate body of the cleaning plate (6), a sliding sleeve (9) is sleeved in each first through hole (8), the sliding sleeve (9) is sleeved outside the heat exchange tube (2), and the sliding sleeve (9) is a circular structure formed by connecting two semicircular arc plates from head to tail, two L-shaped locking blocks (10) are oppositely arranged on the outer wall of the sliding sleeve (9);
the outer side of the first through hole (8) is downwards concave based on the upper surface of the cleaning plate (6) to form two fan-shaped locking grooves (11), the two fan-shaped locking grooves (11) are arranged in a central symmetry mode along the axis of the first through hole (8), the bottom of the inner arc groove wall of the two fan-shaped locking grooves (11) is provided with an arc-shaped channel (12) penetrating through the fan-shaped locking grooves (11) and the first through hole (8), and the two inner arc groove walls are both provided with openings for inserting L-shaped locking blocks;
the two L-shaped locking blocks (10) are respectively inserted into the two fan-shaped locking grooves (11) and slide along the fan-shaped locking grooves (11), the cross rods of the L-shaped locking blocks (10) are positioned in the arc-shaped channel (12), and the vertical rods of the L-shaped locking blocks (10) are positioned in the fan-shaped locking grooves (11);
drive arrangement includes a winding section of thick bamboo (13), motor (14) and wire rope (15), a winding section of thick bamboo (13) set up in the upper portion of boiler body (1) through first support (16), motor (14) set up in the upper portion of boiler body (1) through second support (17), the output shaft of motor (14) and the pivot fixed connection of a winding section of thick bamboo (13), the one end of wire rope (15) and the barrel fixed connection of a winding section of thick bamboo (13), the other end with rings (7) fixed connection.
2. The exhaust-heat boiler for steel mill residual heat power generation according to claim 1, characterized in that a filter screen (18) is arranged in the air inlet flue (3).
3. The heat recovery boiler for steel mill cogeneration according to claim 1, wherein said heat exchange tubes (2) are serpentine tubes.
4. The exhaust-heat boiler for steel mill residual heat power generation according to claim 1, characterized in that the plate body of the cleaning plate (6) is provided with a plurality of second through holes (19) penetrating through the cleaning plate (6).
5. The exhaust-heat boiler for steel mill residual heat power generation according to claim 1, characterized in that the inner wall of the sliding sleeve (9) is fixedly provided with a brush (20).
6. The exhaust-heat boiler for steel mill residual heat power generation according to claim 1, characterized in that a balancing weight (21) is fixedly arranged on the lower end surface of the cleaning plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559436.1U CN212720925U (en) | 2020-07-31 | 2020-07-31 | Waste heat boiler for waste heat power generation of steel mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559436.1U CN212720925U (en) | 2020-07-31 | 2020-07-31 | Waste heat boiler for waste heat power generation of steel mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212720925U true CN212720925U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021559436.1U Active CN212720925U (en) | 2020-07-31 | 2020-07-31 | Waste heat boiler for waste heat power generation of steel mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212720925U (en) |
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2020
- 2020-07-31 CN CN202021559436.1U patent/CN212720925U/en active Active
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