CN214250680U

CN214250680U - Rotatable air heater

Info

Publication number: CN214250680U
Application number: CN202022377243.0U
Authority: CN
Inventors: 葛胜玉; 吴建国; 张富春; 刘银才
Original assignee: Huaneng Weihai Power Generation Co Ltd
Current assignee: Huaneng Weihai Power Generation Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-09-21
Anticipated expiration: 2030-10-23

Abstract

The utility model belongs to the technical field of the power generation boiler wind channel technique and specifically relates to a rotatable formula fan heater, this fan heater of its characterized in that is equipped with square barrel, be equipped with the carriage in the square barrel, be equipped with four group's plate heat exchangers side by side in the carriage, steam inlet and hydrophobic export in the heat exchanger are established respectively about the heat exchanger both ends middle part, steam inlet advances the pipe with steam and is connected, steam advances the upper end of pipe and passes carriage and square barrel in proper order and be connected with sealed rotation between carriage and the square barrel, hydrophobic export in the heat exchanger is connected with the drain pipe, the lower extreme of drain pipe passes carriage and square barrel in proper order and with sealed rotation between carriage and the square barrel and be connected, the steam of adjacent two groups of plate heat exchangers advances to be equipped with rotating device between the pipe, rotating device includes turbine, the worm, the drive handle is constituteed, and has simple structure, Convenient use, high efficiency, no need of stopping the fan, convenient installation, good sealing effect and the like.

Description

Rotatable air heater

Technical Field

The utility model belongs to the technical field of power generation boiler wind channel technique and specifically relates to a simple structure, convenient to use, operation are high-efficient, need not to shut down fan, simple to operate, sealed effectual rotatable formula fan heater.

Background

As is well known, the existing boiler is generally designed to adopt a fan heater to heat secondary air for preventing the low-temperature corrosion of an air preheater, and a fixed spiral fin tube type arrangement is mostly adopted. There are the following problems: 1. because the spiral rib pipes of the air heater are arranged relatively densely, the differential pressure of the air heater is large in the running process of the unit, the design value of the differential pressure of the air heater is 200-300Pa, the differential pressure in the actual running process is about 800 Pa (empirical data, part of power plants reach more than 1000 Pa), the differential pressure is larger and larger along with the increase of the running time of the unit, and the power consumption of a large number of air blowers is increased. 2. The air heater can be used without investment in most months of the year, but the air heater has resistance no matter whether heated steam passes through or not, and dust, winged insects, tree whiskers and other impurities in the air are brought in along with the air channel inlet of the air feeder and gradually deposited on the radiating fins, so that the air channel resistance is gradually increased, the pollution blockage is serious, and the threat to long-period and high-efficiency operation of a unit is formed. 3. The air heater can not be cleaned in the operation of the unit, and the potential safety hazard is large and incomplete if the air heater is cleaned. 4. The air heater can not be detached, and mainly in seasons except summer, because the inlet temperature of the air preheater is low, the air preheater is blocked, and the safe operation of a unit is damaged. 5. The pressure head of the air feeder is improved in the non-use time of the air heater, a large amount of extra electric energy is consumed, and the potential safety operation hazard of the air feeder can be caused under the condition of serious pollution blockage. 6. The phenomenon of leaking exists in the air heater, and in order to solve above-mentioned problem, but the air heater of current design rotatable formula, nevertheless there is sealed effect not good, cost of maintenance is high, the structure is complicated, the installation is wasted time and energy the scheduling condition.

Disclosure of Invention

The utility model aims at solving the deficiencies of the prior art, providing a rotatable air heater which has simple structure, convenient use, high efficiency in operation, no need of stopping the fan, convenient installation and good sealing effect.

The utility model provides a technical scheme that its technical problem adopted is:

a rotatable air heater is characterized in that the air heater is provided with a square barrel, two ends of the square barrel are respectively and symmetrically provided with a conical air guide cylinder, one end of the conical air guide cylinder is connected with the square barrel, the other end of the conical air guide cylinder is provided with a connecting cylinder connected with an air duct of a boiler, a supporting frame is arranged in the square barrel and fixedly connected with the inner wall of the square barrel, four groups of plate-shaped heat exchangers are arranged in the supporting frame in parallel, a steam inlet and a drain outlet in each heat exchanger are respectively arranged in the middle parts of the upper end and the lower end of the heat exchanger, the steam inlet is connected with a steam inlet pipe, the upper end of the steam inlet pipe sequentially penetrates through the supporting frame and the square barrel and is in sealed rotating connection with the supporting frame and the square barrel, the drain outlet in each heat exchanger is connected with a drain pipe, the lower end of the drain pipe sequentially penetrates through the supporting frame and the square barrel and is in sealed rotating connection with the supporting frame and the square barrel, the steam of two adjacent sets of plate heat exchangers advances to be equipped with rotating device between the pipe, rotating device includes turbine, worm, drive handle and constitutes, turbine and steam advance the pipe and be connected, adjacent steam advances the turbine on the pipe and meshes mutually through same worm, the worm is fixed on square barrel through the support, link to each other through the bearing between worm and the support, the worm is connected with drive handle, drives the worm rotation through drive handle and then drives the turbine rotation of worm both sides, finally realizes that adjacent steam advances the pipe and rotates, and then realizes plate heat exchanger's rotation.

Steam advance a tub top be equipped with the steam delivery pipe, steam advances to manage and stretches into in the steam delivery pipe and be the clearance between the steam delivery pipe and rotate and be connected, the lower extreme of gas-supply pipe be equipped with down the annular locating plate, sealed fixed connection between the inner wall of lower annular locating plate and the steam delivery pipe is equipped with the through-hole down on the annular locating plate, steam advance the outside cover of pipe have last locking ring plate, the last face of last locking ring plate is equipped with the elastic sealing pad, be equipped with the through-hole that corresponds with the through-hole position of lower annular locating plate on the locking ring plate, be equipped with lock nut and lock bolt in the through-hole, lock bolt passes down the annular locating plate and the through-hole of last locking ring plate and through lock nut locking, make down the annular locating plate and the sealed locking function of the realization of the elastic sealing pad between the last locking ring plate.

The below of drain pipe be equipped with the drain pipe, the drain pipe stretch into in the drain pipe and be the clearance between the drain pipe and rotate and be connected, the upper end of drain pipe be equipped with annular locating plate, sealed fixed connection between the inner wall of last annular locating plate and the blast pipe, be equipped with the through-hole on the annular locating plate, the outside cover of drain pipe have down locking annular plate, the lower plate face of lower locking annular plate is equipped with the elastic sealing pad, be equipped with the through-hole that corresponds with the through-hole position of last annular locating plate on the lower locking annular plate, be equipped with lock nut and lock bolt in the through-hole, the through-hole that lock bolt passed last annular locating plate and lower locking annular plate and through lock nut locking, the elastic sealing pad who makes between annular locating plate and the lower locking annular plate realizes sealed locking function.

Lower annular locating plate below inboard and steam transmission union coupling department, the top inboard of going up annular locating plate do not be equipped with the drainage pipe connection punishment and cut open the annular groove to steam transmission pipe and drain pipe inner wall, the elastic sealing pad top that corresponds with annular groove position is equipped with annular arch, impresses in the annular groove through annular arch, further realizes sealedly.

Lower annular locating plate's lower face, go up the face of annular locating plate and be equipped with the annular groove respectively, elastic sealing pad is last to be equipped with the annular boss that corresponds with the annular groove position, further realizes sealing connection between the body.

The utility model discloses owing to adopt above-mentioned structure, have simple structure, convenient to use, operation high efficiency, need not to shut down the fan, simple to operate, sealed effectual advantage such as.

Drawings

Fig. 1 is a working state diagram of the connection between the square cylinder and the heat exchanger of the present invention.

Fig. 2 is a diagram of the square cylinder and the heat exchanger in the non-working state.

FIG. 3 is a diagram showing the connection between the steam inlet pipe and the steam delivery pipe.

FIG. 4 is a view showing a connection relationship between a drain pipe and a drain pipe.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in the attached drawing, the rotatable air heater is characterized in that the air heater is provided with a square cylinder body 1, two ends of the square cylinder body 1 are respectively and symmetrically provided with a conical air guide cylinder, one end of the conical air guide cylinder is connected with the square cylinder body 1, the other end of the conical air guide cylinder is provided with a connecting cylinder connected with a boiler air duct, a support frame 2 is arranged in the square cylinder body 1, the support frame 2 is fixedly connected with the inner wall of the square cylinder body 1, four groups of plate-shaped heat exchangers 3 are arranged in the support frame 2 in parallel, a steam inlet and a drain outlet in each heat exchanger 3 are respectively arranged in the middle of the upper end and the lower end of each heat exchanger 3, the steam inlet is connected with a steam inlet pipe 4, the upper end of the steam inlet pipe 4 sequentially penetrates through the support frame 2 and the square cylinder body 1 and is connected with the support frame 2 and the square cylinder body 1 in a sealing and rotating manner, the drain outlet in each heat exchanger 3 is connected with a drain pipe 5, the lower end of the drain pipe 5 sequentially penetrates through the supporting frame 2 and the square cylinder 1 and is connected with the supporting frame 2 and the square cylinder 1 in a sealing and rotating mode, a rotating device is arranged between the steam inlet pipes 4 of the two adjacent groups of plate-shaped heat exchangers 3 and comprises a turbine 6, a worm 7 and a driving handle 8, the turbine 6 is connected with the steam inlet pipes 4, the turbines 6 on the adjacent steam inlet pipes 4 are meshed through the same worm 7, the worm 7 is fixed on the square cylinder 1 through a support, the worm 7 is connected with the support 9 through a bearing, the worm 7 is connected with the driving handle 8, the driving handle 8 drives the worm 7 to rotate so as to drive the turbines 6 on the two sides of the worm 7 to rotate, finally, the adjacent steam inlet pipes 4 rotate, and further the rotation of the plate-shaped heat exchangers 3 is achieved.

Furthermore, a steam conveying pipe 10 is arranged above the steam inlet pipe 4, the steam inlet pipe 4 extends into the steam conveying pipe 10 and is in clearance rotating connection with the steam conveying pipe 10, the lower end of the gas transmission pipe is provided with a lower annular positioning plate 11, the inner wall of the lower annular positioning plate 11 is fixedly connected with the gas transmission pipe 10 in a sealing way, the lower annular positioning plate 11 is provided with a through hole, the outer side cover of steam admission pipe 4 have last locking annular plate 12, the last face of last locking annular plate 12 is equipped with elastic sealing pad 13, be equipped with the through-hole that corresponds with the through-hole position of lower annular locating plate 11 on the locking annular plate 12, be equipped with lock nut 14 and lock bolt 15 in the through-hole, lock bolt 15 passes the through-hole of lower annular locating plate 11 and last locking annular plate 12 and locks through lock nut 14, make the elastic sealing pad 13 between lower annular locating plate 11 and the last locking annular plate 12 realize sealed locking function.

Furthermore, a drain pipe 16 is arranged below the drain pipe 5, the drain pipe 5 extends into the drain pipe 16 and is rotationally connected with the drain pipe 16 in a clearance way, an upper annular positioning plate 17 is arranged at the upper end of the drain pipe 16, the inner wall of the upper annular positioning plate 17 is fixedly connected with the exhaust pipe in a sealing way, a through hole is arranged on the upper annular positioning plate 17, the outside cover of drain pipe 5 have locking annular plate 18 down, the lower plate surface of locking annular plate 18 is equipped with elastic sealing pad 13 down, be equipped with the through-hole that corresponds with the through-hole position of last annular locating plate 17 down on the locking annular plate 18, be equipped with lock nut 14 and lock bolt 15 in the through-hole, lock bolt 15 passes the through-hole of last annular locating plate 17 and lower locking annular plate 18 and locks through lock nut 14, make the elastic sealing pad 13 between annular locating plate 17 and the lower locking annular plate 18 realize sealed locking function.

Further, the connection of the inner side of the lower part of the lower annular positioning plate 11 and the steam transmission pipe 10 and the connection of the inner side of the upper part of the upper annular positioning plate 17 and the water drainage pipe 16 are respectively provided with an annular groove 19 which cuts open the inner walls of the steam transmission pipe 10 and the water drainage pipe 16, an annular bulge 20 is arranged above the elastic sealing gasket 13 corresponding to the position of the annular groove, and the annular bulge 20 is pressed into the annular groove to further realize sealing.

Further, the lower plate surface of the lower annular positioning plate 11 and the upper plate surface of the upper annular positioning plate 17 are respectively provided with an annular groove 22, and the elastic sealing gasket 13 is provided with an annular boss 21 corresponding to the annular groove 22, so that the pipe bodies are further connected in a sealing manner.

The utility model discloses when using, be connected the both ends of this rotatable formula air heater with the boiler flue respectively, when needs carry out rotatory heat exchanger 3, lift locking bolt 15 and lock nut 14 on steam transmission pipe 10 and the drain pipe 16 off, make steam transmission pipe 10 and steam advance to be between pipe 4 and rotate and be connected, it is connected to rotate between drain pipe 5 and the drain pipe 16, rotate driving handle 8 this moment, driving handle 8 drives worm 7 rotatory, and then worm 7 drives turbine 6 and rotates, turbine 6 drives steam and advances pipe 4 and rotate, and then advance pipe 4 through steam and drive heat exchanger 3 bodily rotation, it is rotatory to the square barrel 1 interior wind current direction parallel state of 3 faces of heat exchanger and air heater, the air heater is out of work this moment, when needs carry out work, it drives turbine 6 gyration to rotate worm 7 through driving handle 8, turbine 6 drives steam and advances pipe 4 rotations, steam advances pipe 4 east heat exchanger 3 rotatory to face and the square barrel 1 interior wind current direction perpendicular state of air heater of square barrel of air heater, the wind current direction is rotatory to face and air heater The state, then lock the ring-shaped locating plate 17 and lower lock ring-shaped plate 18, lower ring-shaped locating plate 11 and upper lock ring-shaped plate 12 on the lock bolt 15 and lock nut 14, make the steam pipe 10 connect with steam inlet pipe 4 in a sealed locking way, the drain pipe 5 connects with drain pipe 16 in a sealed locking way, and then realize the work of the air heater, when the long-time work leads to the aging of the elastic sealing gasket 13, the seal is not tight, can change by detaching the ring-shaped locking plate and lower ring-shaped locking plate, because the connection between the pipelines passes the flange joint, can detach drain pipe 16 and air pipe, realize the change of the ring-shaped locking plate and lower ring-shaped locking plate, the above-mentioned driving hand wheel can drive the worm 7 to rotate through the driving wheel, the elastic sealing gasket is elastic rubber material, its thickness is 0.8-1.5cm, guarantee the malleability and the sealing of the compaction, the utility model discloses owing to adopt above-mentioned structure, have simple structure, convenient to use, operation high efficiency, need not to shut down the fan, simple to operate, sealed effectual advantage such as.

Claims

1. A rotatable air heater is characterized in that the air heater is provided with a square barrel, two ends of the square barrel are respectively and symmetrically provided with a conical air guide cylinder, one end of the conical air guide cylinder is connected with the square barrel, the other end of the conical air guide cylinder is provided with a connecting cylinder connected with an air duct of a boiler, a supporting frame is arranged in the square barrel and fixedly connected with the inner wall of the square barrel, four groups of plate-shaped heat exchangers are arranged in the supporting frame in parallel, a steam inlet and a drain outlet in each heat exchanger are respectively arranged in the middle parts of the upper end and the lower end of the heat exchanger, the steam inlet is connected with a steam inlet pipe, the upper end of the steam inlet pipe sequentially penetrates through the supporting frame and the square barrel and is in sealed rotating connection with the supporting frame and the square barrel, the drain outlet in each heat exchanger is connected with a drain pipe, the lower end of the drain pipe sequentially penetrates through the supporting frame and the square barrel and is in sealed rotating connection with the supporting frame and the square barrel, the steam of two adjacent sets of plate heat exchangers advances to be equipped with rotating device between the pipe, rotating device includes turbine, worm, drive handle and constitutes, turbine and steam advance the pipe and be connected, adjacent steam advances the turbine on the pipe and meshes mutually through same worm, the worm is fixed on square barrel through the support, link to each other through the bearing between worm and the support, the worm is connected with drive handle, drives the worm rotation through drive handle and then drives the turbine rotation of worm both sides, finally realizes that adjacent steam advances the pipe and rotates, and then realizes plate heat exchanger's rotation.

2. The rotatable air heater according to claim 1, wherein a steam pipe is disposed above the steam inlet pipe, the steam inlet pipe extends into the steam pipe and is rotatably connected with the steam pipe in a clearance manner, a lower annular positioning plate is disposed at a lower end of the steam pipe, an inner wall of the lower annular positioning plate is fixedly connected with the steam pipe in a sealing manner, a through hole is formed in the lower annular positioning plate, an upper locking annular plate is sleeved outside the steam inlet pipe, an elastic sealing gasket is disposed on an upper plate surface of the upper locking annular plate, a through hole corresponding to the through hole of the lower annular positioning plate is formed in the upper locking annular plate, a locking nut and a locking bolt are disposed in the through hole, and the locking bolt penetrates through the through holes of the lower annular positioning plate and the upper locking annular plate and is locked by the locking nut.

3. The rotatable air heater according to claim 1, wherein a drain pipe is arranged below the drain pipe, the drain pipe extends into the drain pipe and is rotatably connected with the drain pipe in a clearance manner, an upper annular positioning plate is arranged at the upper end of the drain pipe, the inner wall of the upper annular positioning plate is fixedly connected with the exhaust pipe in a sealing manner, a through hole is formed in the upper annular positioning plate, a lower locking annular plate is sleeved outside the drain pipe, an elastic sealing gasket is arranged on the lower plate surface of the lower locking annular plate, a through hole corresponding to the through hole of the upper annular positioning plate is formed in the lower locking annular plate, a locking nut and a locking bolt are arranged in the through hole, and the locking bolt penetrates through the through holes of the upper annular positioning plate and the lower locking annular plate and is locked through the locking nut.

4. The rotatable air heater according to claim 2, wherein the connection between the lower inner side of the lower annular positioning plate and the steam pipe and the connection between the upper inner side of the upper annular positioning plate and the water discharge pipe are respectively provided with an annular groove cut into the inner walls of the steam pipe and the water discharge pipe, an annular protrusion is arranged above the elastic sealing gasket corresponding to the position of the annular groove, and the annular protrusion is pressed into the annular groove to realize sealing.

5. The rotatable air heater according to claim 4, wherein the lower plate surface of the lower annular positioning plate and the upper plate surface of the upper annular positioning plate are respectively provided with an annular groove, and the elastic sealing gasket is provided with an annular boss corresponding to the annular groove.