CN215489837U

CN215489837U - Boiler air preheater

Info

Publication number: CN215489837U
Application number: CN202121302725.8U
Authority: CN
Inventors: 李川涛; 陆志敏; 赵诚
Original assignee: Hangzhou Thermoelectric Group Co ltd
Current assignee: Hangzhou Thermoelectric Group Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-11
Anticipated expiration: 2031-06-10

Abstract

The application relates to the field of boilers, in particular to a boiler air preheater which comprises a plurality of air conveying mechanisms, a box body used for placing the air conveying mechanisms and a flow guide mechanism which enables the two adjacent air conveying mechanisms to be connected in series; the upper end and the lower end of the box body are arranged in an opening mode, the plurality of air conveying mechanisms are distributed in the vertical direction of the box body, each air conveying mechanism comprises two oppositely arranged mounting plates and a plurality of hollow pipes arranged between the two mounting plates, and the hollow pipes are horizontally arranged; the during operation, the air gets into from the air conveying mechanism who is located the below, and through the air conveying mechanism of top in proper order, through the air conveying mechanism discharge of the top, every time the air from air conveying mechanism through once just being heated by the flue gas once, the air can be heated many times, this application has the effect that has effectively improved heat exchange efficiency.

Description

Boiler air preheater

Technical Field

The application relates to the field of boilers, in particular to a boiler air preheater.

Background

An air preheater is also called an air preheater for short, and is a preheating device for improving the heat exchange performance of a boiler and reducing the heat loss.

Air heater includes many hollow tubes that are used for air conveying for the pipe case of installation hollow tube, the round hole of intercommunication hollow tube is seted up to pipe case lateral wall, and the during operation, flue gas are discharged from the boiler afterbody, and the flue gas passes through a plurality of hollow tubes along the circulation direction of perpendicular to hollow tube, and the air gets into from round hole one end, and the other end is discharged, and the heat in the flue gas will be through the air heating in the hollow tube.

In view of the above-mentioned related art, the inventor believes that the temperature is high immediately after the smoke is discharged, and the temperature gradually decreases after the smoke passes through a plurality of hollow pipes, resulting in uneven heating of air.

SUMMERY OF THE UTILITY MODEL

The application provides a boiler air preheater for making air heating more uniform.

The application provides a boiler air preheater adopts following technical scheme:

a boiler air preheater comprises a plurality of air conveying mechanisms, a box body for placing the air conveying mechanisms and a flow guide mechanism which enables two adjacent air conveying mechanisms to be connected in series; the air conveying mechanism comprises two mounting plates which are arranged oppositely and a plurality of hollow pipes which are arranged between the two mounting plates, and the hollow pipes are horizontally arranged.

Through adopting above-mentioned technical scheme, the air gets into from the air conveying mechanism who is located the below, and the air conveying mechanism who passes through the top in proper order discharges through the air conveying mechanism of top, and every time the air is just once heated by the flue gas from air conveying mechanism process, and the air obtains the heat almost equally from the flue gas, and the air is heated more evenly.

Optionally, the side wall of the box body is provided with a mounting hole, and the mounting plate is mounted in the mounting hole; the water conservancy diversion mechanism is including installing in the intercommunication fan housing of box lateral wall, the intercommunication fan housing includes the baffle, from the baffle outer edge vertically extending's bounding wall, the bounding wall supports tightly in the box lateral wall, and two adjacent mounting panels are located same intercommunication fan housing from top to bottom, and the intercommunication fan housing of box both sides has the difference in height and differs the height that highly is a mounting panel.

Through adopting above-mentioned technical scheme, the air enters into the intercommunication fan housing through hollow tube one end, later enters into the hollow tube of adjacent air conveying mechanism.

Optionally, the diversion mechanism further comprises a diversion plate, the diversion plate comprises a diversion plate parallel to the baffle, two fixing plates are perpendicularly connected to the upper end and the lower end of the diversion plate, the fixing plates abut against the side wall of the box body, and a gap for gas circulation is formed between the diversion plate and the baffle.

Through adopting above-mentioned technical scheme, during a part air enters into the hollow tube of top through the guide plate, during another part enters into the hollow tube of top through the clearance, the circulation of air effect is better.

Optionally, it is every right install the connecting rod between the mounting panel, install the bracing piece between the wall of box both sides, connecting rod sliding connection is in the bracing piece, guide plate fixed mounting is in the intercommunication fan housing, the intercommunication fan housing can be dismantled and connect in the box.

Through adopting above-mentioned technical scheme, after working for a long time, can deposit more dust on the hollow tube outside, at this moment, take off the intercommunication fan housing, pull out air conveying mechanism and carry out cleaning.

Optionally, the air conveying mechanism further comprises a cleaning plate, the cleaning plate is provided with a plurality of cleaning holes corresponding to the hollow pipes, and the cleaning plate is connected to the hollow pipes in a sliding mode through the cleaning holes.

Through adopting above-mentioned technical scheme, the clean board of slip strikes off the deposition on the hollow tube.

Optionally, a handle for applying force is mounted on the cleaning plate.

By adopting the technical scheme, the operator holds the handle to apply force conveniently.

Optionally, the waste heat air-conditioning system further comprises a waste heat heating mechanism located below the air conveying mechanism, wherein the waste heat heating mechanism comprises a plurality of conveying pipes which are parallel to each other, two connecting pipes which respectively communicate two ends of the plurality of conveying pipes, an input pipe connected to one of the connecting pipes, an output pipe connected to the other connecting pipe, and a blower connected to the input pipe, and the output end of the output pipe is aligned to the communicating fan cover.

Through adopting above-mentioned technical scheme, the heat of flue gas heats the air in the conveyer pipe, and the air after the heating blows to intercommunication fan housing department, plays heating, heat retaining effect to the intercommunication fan housing.

Optionally, the waste heat heating mechanism further comprises an air outlet plate connected to the output end of the output pipe, and the air outlet plate is opposite to the baffle.

Through adopting above-mentioned technical scheme, the air-out board is just to the intercommunication fan housing for it is more even to be heated to communicate the fan housing.

In summary, the present application includes at least one of the following beneficial technical effects:

air enters from the air conveying mechanism located below, sequentially passes through the air conveying mechanism located above and is discharged through the air conveying mechanism located at the top, each time the air is heated by smoke gas once after passing through the air conveying mechanism, the heat obtained by the air from the smoke gas is almost equal, and the air is heated more uniformly.

Drawings

Fig. 1 is a schematic structural diagram of an overall boiler air preheater according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a part of a boiler air preheater according to an embodiment of the present application.

Fig. 3 is a schematic view of the overall structure of the support rod.

Fig. 4 is a schematic view of the overall structure of the air conveyance mechanism.

Fig. 5 is a schematic view of the entire structure of the guide mechanism.

Fig. 6 is a cross-sectional view taken along B-B.

Description of reference numerals: 1. a box body; 11. mounting holes; 12. avoiding holes; 2. a support bar; 21. embedding a groove; 3. a flow guide mechanism; 31. the air cover is communicated; 311. a baffle plate; 312. enclosing plates; 32. a baffle; 321. a flow distribution plate; 322. a fixing plate; 33. a connecting plate; 34. a gap; 4. an air delivery mechanism; 41. mounting a plate; 411. air holes are formed; 42. a handle; 43. cleaning the plate; 431. cleaning the hole; 44. a handle; 45. a connecting rod; 46. a hollow tube; 5. a waste heat heating mechanism; 51. a blower; 52. an input tube; 53. a connecting pipe; 54. a delivery pipe; 55. an output pipe; 56. and (7) an air outlet plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a boiler air preheater. Referring to fig. 1, the boiler air preheater comprises a box body 1, a plurality of air conveying mechanisms 4 arranged in the box body 1, and a flow guide mechanism 3 communicated among the plurality of conveying mechanisms.

Referring to fig. 1 and 2, the box body 1 is rectangular, the upper end and the lower end of the box body are both open, the two opposite side walls of the box body 1 are provided with corresponding mounting holes 11, the side walls of the box body 1 are provided with a plurality of mounting holes 11, and the mounting holes 11 are arranged in a rectangular array.

Referring to fig. 2 and 3, a plurality of sets of support rods 2 are connected between two adjacent side walls of the box body 1, each set of support rods 2 is four, the four support rods 2 are respectively connected to four corners of the mounting hole 11, the side wall, close to each other, of each set of support rods 2 which are arranged up and down oppositely is provided with an embedding groove 21, the cross section of the embedding groove 21 is in a 'T-shaped' arrangement, and the side wall of the box body 1 is provided with a avoiding hole 12 communicated with the embedding groove 21.

Referring to fig. 4, the air conveying mechanism 4 includes a pair of mounting plates 41 disposed opposite to each other, a plurality of hollow tubes 46 installed between the two mounting plates 41, a cleaning plate 43 located between the two mounting plates 41, four connecting rods 45 installed between the two mounting plates 41, a plurality of air holes 411 corresponding to the hollow tubes 46 are formed in the mounting plate 41, a handle 42 for applying force is welded to a side wall of the mounting plate 41 facing away from the side wall, a plurality of cleaning holes 431 corresponding to the hollow tubes 46 are formed in the cleaning plate 43, the cleaning plate 43 is slidably connected to the hollow tubes 46 through the cleaning holes 431, and a handle 44 is welded to a side wall of the cleaning plate 43 near one end of the handle 42.

Referring to fig. 2 and 4, four connecting rods 45 are slidably connected to the embedding grooves 21 of the four supporting rods 2.

Referring to fig. 5, the air guide mechanism 3 includes a communication hood 31, a guide plate 32 located inside the communication hood 31, and a connection plate 33 mounted on a side wall of the communication hood 31.

Referring to fig. 5 and 6, the communicating hood 31 includes a baffle 311 parallel to the sidewall of the box 1, and four enclosing plates 312 vertically connected to the sidewall of the baffle 311, wherein one end of the enclosing plate 312, which is far away from the baffle 311, is vertically connected to the sidewall of the box 1. The baffle 32 comprises a dividing plate 321 parallel to the baffle 311, and four fixing plates 322 vertically connected to the dividing plate 321, wherein one end of the fixing plate 322 far from the dividing plate 321 abuts against the side wall of the box 1.

Referring to fig. 5 and 6, the connecting plate 33 is welded to the side wall of the outer wall of the box body 1, which is far away from the outer wall of the box body 1, and bolts are arranged on the connecting plate 33 and simultaneously penetrate through the side wall of the box body 1. The dividing plate 321 and the fixing plate 322 are both rectangular, and both ends of the dividing plate 321 and the fixing plate 322 in the length direction are respectively welded to the side walls of the enclosing plate 312.

Referring to fig. 5 and 6, a gap 34 is provided between the dividing plate 321 and the baffle 311. The central axes of the baffle 311 and the splitter plate 321 in the length direction are coincident, and the width of the splitter plate 321 is one half of the width of the baffle 311.

Referring to fig. 6, two communicating hoods 31 are installed on the corresponding outer walls of the box 1, one of the communicating hoods 31 covers the two rows of air delivery mechanisms 4 at the bottom, and the other communicating hood 31 covers the two rows of air delivery mechanisms 4 at the top.

Referring to fig. 6, it is defined that the upper side of the communicating hood 31 is left, the lower side of the communicating hood 31 is right, and the upper right fixing plate 322 and the lower left fixing plate 322 are located at the same level.

Referring to fig. 6, the residual heat heating device 5 further includes a residual heat heating device 5, the residual heat heating device 5 includes an air outlet plate 56 opposite to the outer wall of the left baffle 311, an output pipe 55 communicated with the air outlet plate 56, a plurality of horizontally arranged conveying pipes 54 located below the air conveying device 4, two connecting pipes 53 respectively communicating two ends of the plurality of conveying pipes 54, and a blower 51; the output end of the blower 51 is connected with an input pipe 52, and one end of the input pipe 52 far away from the blower 51 is communicated with a connecting pipe 53 far away from one end of the air outlet plate 56.

The implementation principle of the boiler air preheater in the embodiment of the application is as follows:

referring to fig. 6, a hollow arrow points to the air movement direction, and a solid arrow points to the smoke movement direction; air enters from the air conveying mechanism 4 at the bottom along the hollow arrow direction and is discharged from the air conveying mechanism 4 at the upper part, smoke enters from the upper end of the box body 1 and is discharged from the lower end of the box body 1 to heat the hollow pipe 46.

Secondly, the conveying pipe 54 is heated by the heat in the flue gas, and the hot air is output from the air outlet plate 56 and blown to the left diversion mechanism 3 to heat the air in the diversion mechanism 3.

Thirdly, after working for a long time, screwing the bolt to take down the flow guide mechanism 3, and holding the handle 42 to pull the air delivery mechanism 4 out of the box body 1.

Fourthly, the operator holds the handle 44, and the cleaning plate 43 slides on the hollow pipe 46 to scrape off the dust on the hollow pipe 46.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A boiler air preheater is characterized in that: the air-conditioning system comprises a plurality of air conveying mechanisms (4), a box body (1) for placing the air conveying mechanisms (4) and a flow guide mechanism (3) for connecting two adjacent air conveying mechanisms (4) in series; the utility model discloses a box, including box (1), air conveying mechanism (4) and hollow tube (46), both ends are the opening setting about box (1), and are a plurality of air conveying mechanism (4) distribute in the vertical direction of box (1), air conveying mechanism (4) include two relative mounting panel (41) that set up, install a plurality of hollow tube (46) between two mounting panel (41), hollow tube (46) level sets up.

2. The air preheater of the boiler according to claim 1, wherein: the side wall of the box body (1) is provided with a mounting hole (11), and the mounting plate (41) is mounted in the mounting hole (11); the water conservancy diversion mechanism (3) is including installing in intercommunication fan housing (31) of box (1) lateral wall, intercommunication fan housing (31) include baffle (311), from baffle (311) outer edge vertically extending bounding wall (312), bounding wall (312) support tightly in box (1) lateral wall, and two adjacent mounting panel (41) are arranged in same intercommunication fan housing (31) from top to bottom, and there is the difference in height and highly is the height of a mounting panel (41) communicating fan housing (31) of box (1) both sides.

3. The air preheater of the boiler according to claim 2, wherein: the flow guide mechanism (3) further comprises a flow guide plate (32), the flow guide plate (32) comprises a flow distribution plate (321) parallel to the baffle (311), two fixing plates (322) are vertically connected to the upper end and the lower end of the flow distribution plate (321), the fixing plates (322) abut against the side wall of the box body (1), and a gap (34) for gas circulation is formed between the flow distribution plate (321) and the baffle (311).

4. The air preheater of the boiler according to claim 3, wherein: every is every install connecting rod (45) between mounting panel (41), install bracing piece (2) between box (1) both sides wall, connecting rod (45) sliding connection is in bracing piece (2), guide plate (32) fixed mounting is in intercommunication fan housing (31), intercommunication fan housing (31) can be dismantled and connect in box (1).

5. The air preheater of the boiler according to claim 1, wherein: the air conveying mechanism (4) further comprises a cleaning plate (43), the cleaning plate (43) is provided with a plurality of cleaning holes (431) corresponding to the hollow pipes (46), and the cleaning plate (43) is connected to the hollow pipes (46) in a sliding mode through the cleaning holes (431).

6. The air preheater of the boiler according to claim 5, wherein: a handle (44) for applying force is mounted on the cleaning plate (43).

7. The air preheater of the boiler according to claim 1, wherein: still including being located residual heat heating mechanism (5) of air delivery mechanism (4) below, residual heat heating mechanism (5) include many conveyer pipes (54) that are parallel to each other, with two connecting pipes (53) that many conveyer pipes (54) both ends communicate respectively, connect in input tube (52) of one of them connecting pipe (53), connect in output tube (55) of another connecting pipe (53), connect in hair-dryer (51) of input tube (52), output tube (55) output is aimed at in intercommunication fan housing (31).

8. The air preheater of a boiler according to claim 7, wherein: the waste heat heating mechanism (5) further comprises an air outlet plate (56) connected to the output end of the output pipe (55), and the air outlet plate (56) is opposite to the baffle (311).