CN215893400U

CN215893400U - Online flushing device of rotary air preheater

Info

Publication number: CN215893400U
Application number: CN202122031943.9U
Authority: CN
Inventors: 朱金仓; 杨伶
Original assignee: Henan China Power Investment Huaxin Power Engineering Co ltd
Current assignee: Huaxin Holdings Henan Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-22
Anticipated expiration: 2031-08-26

Abstract

The utility model belongs to the technical field of air preheater online cleaning equipment, and particularly relates to a rotary air preheater online cleaning equipment. Because the air preheater exchanges heat with the flue gas and the secondary air, the excessive water can actually absorb heat and reduce the temperature of the primary air and the secondary air, the normal work of other systems cannot be met, and besides, the water absorbing heat can be evaporated, so that the water content in the soot blowing steam is increased, and the soot blocking of the air preheater is more easily caused; the utility model utilizes the controller to control the water spraying head to be started when the rotating shaft rotates, realizes the online washing function, and cleans the partition plate in the state of the high-pressure spray head.

Description

Online flushing device of rotary air preheater

Technical Field

The utility model belongs to the technical field of air preheater online cleaning equipment, and particularly relates to rotary air preheater online washing equipment.

Background

The implementation of high pressure under-flush during operation of the air preheater first takes into account the control of the water volume and pressure, the discharge of the flushed dirt and dust, and the advance and support of the gun barrel. Because air heater carries out the heat transfer for flue gas and twice wind, the water yield can be received the heat in fact and reduce the temperature reduction of one, overgrate air, can't satisfy the normal work of other systems, removes in addition the thermal water of absorption can evaporate, blows the increase of water content in the ash steam, causes the stifled ash of air preheater more easily like this. Secondly, the more the water volume, the greater the power requirement of the water pump, and thus the requirement of flushing pressure cannot be met. Through multiple tests, two nozzles of the gun head are determined to be two, the diameter of each nozzle is 2 mm, the control pressure is 35MPa, and the water amount is 3 tons per hour;

the control of the water outlet quantity to control the water pressure is also very critical, if the water pressure is too low, the water flow is dried by hot gas and cannot reach the washing effect when not contacting the heat exchange workpiece, if the water pressure is too high, the material and the design specification of the water gun for washing are improved, unnecessary waste is caused, and in addition, the damage of the air preheater can be caused due to too high water pressure. Therefore, through the summary of the working experience in the actual work, the water pressure is set to be 35 MPa;

a large amount of accumulated ash and scale fall off after washing, and if the discharge is not clean, the smoke food ash bucket of the air preheater is blocked, so that the ash bucket needs to be cleaned firstly when online high-pressure water washing is carried out.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the online washing equipment for the rotary air preheater, which solves the technical problem.

The scheme adopted by the utility model is as follows: an online washing device of a rotary air preheater comprises a base and is characterized in that four groups of pillars are fixedly connected to the base at intervals, top plates are fixedly connected to the four groups of pillars, cylindrical barrels are fixedly connected to the top plates, rotating shafts are vertically and rotatably connected to the inside of each cylindrical barrel and driven by a power device, three groups of partition plates matched with the inner side wall of each cylindrical barrel are fixedly connected to the rotating shafts at intervals along the circumferential direction, two groups of fixing plates are fixedly connected to the three groups of partition plates at intervals, a plurality of groups of water spray heads are fixedly connected to the two groups of fixing plates at vertical intervals, a supporting plate is fixedly connected to the lower ends of the three groups of partition plates, a water tank matched with the water spray heads is fixedly connected to the supporting plate, two groups of air outlets are arranged at intervals at the upper end of each cylindrical barrel, and a garbage collecting device corresponding to the cylindrical barrels is arranged on the base, in order to collect the dirt falling from the cylinder during washing, the water spraying head is electrically connected with the controller.

Preferably, the power device comprises a motor fixedly connected to the cylindrical barrel, the motor is fixedly connected to the rotating shaft, and the motor is electrically connected to the controller.

Preferably, the garbage collection device comprises a garbage collection box fixedly connected with a bottom plate, the garbage collection box is longitudinally connected with a filter screen in a sliding mode, water outlets are formed in the left end and the right end of the garbage collection box, and a handle is fixedly connected to one end of the filter screen.

The utility model has the beneficial effects that:

firstly, a controller is utilized to control a water spraying head to be started when a rotating shaft rotates, so that an online washing function is realized, and a partition plate is cleaned in a high-pressure spray head state;

secondly, water flowing down during flushing can be collected into a garbage collection box by using a garbage collection device arranged at the lower end, large-particle impurities are left on a filter screen, and dirty water flows into the bottom of the garbage collection box to wait for centralized treatment;

thirdly, simple structure, easy operation, degree of automation is high, and work efficiency improves, and the practicality is strong.

Drawings

Fig. 1 is one of perspective views of the present invention.

Fig. 2 is one of perspective cross-sectional views of the present invention.

Reference numerals: 1. a base; 2. a pillar; 3. a top plate; 4. a cylindrical barrel; 5. a rotating shaft; 6. a partition plate; 7. a fixing plate; 8. a sprinkler head; 9. a support plate; 10. a water tank; 11. an air outlet; 12. an electric motor; 13. a garbage collection box; 14. a filter screen; 15. a water outlet; 16. a handle.

Detailed Description

The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of the embodiments, taken in conjunction with the accompanying drawings of fig. 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The first embodiment of the utility model relates to online washing equipment for a rotary air preheater, which comprises a base 1 and is characterized in that four groups of struts 2 are fixedly connected to the base 1 at intervals, top plates 3 are fixedly connected to the four groups of struts 2, cylindrical cylinders 4 are fixedly connected to the top plates 3, rotating shafts 5 are vertically and rotatably connected to the inside of the cylindrical cylinders 4, the rotating shafts 5 are driven by a power device, three groups of partition plates 6 matched with the inner side walls of the cylindrical cylinders 4 are fixedly connected to the rotating shafts 5 at intervals along the circumferential direction, two groups of fixing plates 7 are fixedly connected to the three groups of partition plates 6 at intervals, a plurality of groups of water spray heads 8 are fixedly connected to the two groups of fixing plates 7 at vertical intervals, supporting plates 9 are fixedly connected to the lower ends of the three groups of partition plates 6, water tanks 10 matched with the water spray heads 8 are fixedly connected to the supporting plates 9, and two groups of air outlets 11 are arranged at intervals at the upper ends of the cylindrical cylinders 4, the base 1 is provided with a garbage collecting device corresponding to the cylindrical barrel 4, and in order to collect dirt falling from the cylindrical barrel 4 during washing, the water spraying head 8 is electrically connected with the controller.

In the second embodiment, on the basis of the first embodiment, the power device comprises an electric motor 12 fixedly connected to the cylindrical barrel 4, the electric motor 12 is fixedly connected to the rotating shaft 5, and the electric motor 12 is electrically connected to the controller.

In the third embodiment, on the basis of the first embodiment, the garbage collection device comprises a garbage collection box 13 fixedly connected with a bottom plate, the garbage collection box 13 is longitudinally connected with a filter screen 14 in a sliding manner, water outlets 15 are formed in the left end and the right end of the garbage collection box 13, and one end of the filter screen 14 is fixedly connected with a handle 16.

This embodiment is when using, through controller starter motor 12, drive three group's baffles 6 at 4 internal rotations of cylinder barrel under the effect of axis of rotation 5, because

water tank

10 and 8 fixed connection of sprinkler bead, so water tank 10 acts along with sprinkler bead 8, when needs wash baffle 6, start sprinkler bead 8, under the effect of water under high pressure, impurity on the baffle 6 is washed and is fallen in rubbish collecting box 13, under the effect of filter screen 14, large granule impurity falls on filter screen 14, dirty water falls into rubbish collecting box 13 bottom plate, can discharge dirty water through delivery port 15, through mobile handle 16, can regularly keep the clean neatly in the rubbish collecting box 13 to filter screen 14 clearance.

The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. The online washing device for the rotary air preheater comprises a base (1) and is characterized in that four groups of supporting columns (2) are fixedly connected to the base (1) at intervals, a top plate (3) is fixedly connected to the four groups of supporting columns (2), a cylindrical barrel (4) is fixedly connected to the top plate (3), a rotating shaft (5) is vertically and rotatably connected to the inside of the cylindrical barrel (4), the rotating shaft (5) is driven by a power device, three groups of partition plates (6) matched with the inner side wall of the cylindrical barrel (4) are fixedly connected to the rotating shaft (5) at intervals along the circumferential direction, two groups of fixing plates (7) are fixedly connected to the three groups of partition plates (6) at intervals, a plurality of water spray heads (8) are fixedly connected to the two groups of fixing plates (7) at vertical intervals, and a supporting plate (9) is fixedly connected to the lower ends of the three groups of partition plates (6), backup pad (9) on fixedly connected with water tank (10) with sprinkler bead (8) complex, cylinder (4) upper end interval be provided with two sets of air outlets (11), base (1) on be provided with the garbage collection device who corresponds with cylinder (4), in order to wash, collect the foul that cylinder (4) dropped, sprinkler bead (8) and controller between electric connection.

2. A rotary air preheater on-line flushing device as claimed in claim 1, wherein said power device comprises an electric motor (12) fixedly connected to the cylindrical drum (4), said electric motor (12) is fixedly connected to the rotating shaft (5), and said electric motor (12) is electrically connected to the controller.

3. The online washing device for the rotary air preheater according to claim 1, wherein the garbage collection device comprises a garbage collection box (13) fixedly connected with a bottom plate, the garbage collection box (13) is longitudinally and slidably connected with a filter screen (14), water outlets (15) are formed in the left end and the right end of the garbage collection box (13), and one end of the filter screen (14) is fixedly connected with a handle (16).