CN220062724U

CN220062724U - Heat exchange tube bundle flushing device of natural ventilation direct air cooling system

Info

Publication number: CN220062724U
Application number: CN202321653690.1U
Authority: CN
Inventors: 刘斌; 姚远; 李静; 江若; 王学东
Original assignee: Shaanxi Yulin Energy Group Yangcaipan Coal Power Co ltd
Current assignee: Shaanxi Yulin Energy Group Yangcaipan Coal Power Co ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2023-11-21
Anticipated expiration: 2033-06-27

Abstract

The utility model relates to the technical field of cleaning equipment, in particular to a heat exchange tube bundle flushing device of a natural ventilation direct air cooling system, which comprises an upper rail and a lower rail, wherein a cleaning frame is arranged between the upper rail and the lower rail, and cleaning nozzles are respectively arranged on the upper side and the lower side of the cleaning frame, which are close to a cooling triangular tube bundle; according to the utility model, the cleaning frame can be slidably arranged on one side of the cooling triangle tube bundle by arranging the upper rail and the lower rail, the cleaning frame is driven to move along the rail track by the horizontal self-walking mechanism and the auxiliary walking mechanism, and meanwhile, a plurality of groups of cleaning spray heads are arranged on the cleaning frame side by side, so that the cooling triangle tube bundle positioned on one side of the linear rail can be horizontally moved and washed; and be provided with the triangle water spray dish on the washing frame, can be located the cooling triangle tube bank of outer curved circular arc track one side and go up and down to wash to combine the level to wash and go up and down to wash two kinds of modes, realize that whole cooling triangle tube bank does not have the flushing blind area, improve the cleaning performance.

Description

Heat exchange tube bundle flushing device of natural ventilation direct air cooling system

Technical Field

The utility model relates to the technical field of cleaning equipment, in particular to a heat exchange tube bundle flushing device of a natural ventilation direct air cooling system.

Background

Because the height of the cooling triangular tube bundles vertically arranged in the natural ventilation direct air cooling (DNC) system of the large-scale power station is about 25 meters, the side length is about 11 meters, the section specification is 3 to 4 times that of the conventional indirect air cooling triangular tube bundles, and the cooling triangular tube bundles are easy to accumulate dust and dirt due to the large occupied area and the need of overhead arrangement outdoors, so that the heat exchange efficiency of the tube bundles is affected.

Therefore, based on the installation structure of the nozzle arm of the cleaning system and the DNC system structure, the heat exchange tube bundle flushing device of the natural ventilation direct air cooling system is provided, so that the cleaning effect is improved.

Disclosure of Invention

The utility model aims to provide a heat exchange tube bundle flushing device of a natural ventilation direct air cooling system, which mainly solves the technical problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a natural draft direct air cooling system heat exchange tube bundle washing unit for wash the surface of cooling triangle tube bank, includes track and lower track, the track is installed through the track support in the middle part of cooling triangle tube bank on going up, the lower track is installed through the track support the bottom of cooling triangle tube bank, be provided with the washing frame between last track with the lower track, the washing frame is close to one side of cooling triangle tube bank is provided with multiunit washing shower nozzle, multiunit washing shower nozzle sets up side by side along vertical direction for wash the surface of cooling triangle tube bank;

the cleaning frame comprises a fixed frame, the top end of the fixed frame is arranged on the upper rail through an auxiliary travelling mechanism, the bottom end of the fixed frame is arranged on the lower rail through a horizontal self-travelling mechanism, a telescopic frame is arranged in the fixed frame through a lifting assembly, and triangular water spraying plates are arranged at the upper end and the lower end of the telescopic frame and used for lifting and flushing the bent angle of a triangular cooling tube bundle;

the cleaning spray head and the water inlet end of the triangular spray disc are respectively connected with the water outlet of the water delivery pump in the reservoir through water pipes.

Preferably, the horizontal self-walking mechanism comprises a fixed support, the fixed support is in a C shape, the opening end of the fixed support faces the lower track and is horizontally arranged, the top end of the fixed support is installed at the bottom end of the fixed frame, the outer surfaces of the fixed support are installed on two opposite sides of the lower track through a plurality of groups of guiding and positioning components, and at least one group of driving units are arranged on the fixed support and are used for driving the fixed support and driving the cleaning frame to move along the track of the lower track;

preferably, the driving unit comprises a motor, the motor is arranged at the top end of the fixed support, and one end of an output shaft of the motor is provided with a primary chain wheel;

the inner wall opposite sides of the fixed support are provided with rollers through rotating shafts, the rollers are arranged at the top end of the lower rail, one end of the rotating shaft penetrates through and extends to the outer surface of the fixed support, a secondary sprocket is arranged on the outer surface of the fixed support, and the secondary sprocket is connected with the primary sprocket through a chain.

Preferably, the guiding and positioning assembly comprises two mounting brackets, the tops of opposite surfaces of the two mounting brackets are arranged on the outer surface of the fixed support, the bottoms of opposite surfaces of the two mounting brackets are respectively provided with a rail pulley through a fixed rod, and the rail pulleys are arranged on two sides of the inner wall of the lower rail.

Preferably, the auxiliary travelling mechanism comprises a C-shaped frame, the opening end of the C-shaped frame is upwards arranged, the outer surface of the C-shaped frame is arranged on the cleaning frame and is positioned on the same side of the cleaning frame with the horizontal self-travelling mechanism, rotating wheels are respectively arranged on two opposite sides of the inner wall of the C-shaped frame through fixing seats, and the two rotating wheels are respectively positioned on the inner walls of two sides of the upper rail.

Preferably, the lower rail and the upper rail both comprise a straight rail and an outward-curved circular arc rail, and two adjacent straight rails are connected through one outward-curved circular arc rail, so as to form a triangular structure matched with the cooling triangular tube bundle;

the track support comprises a first support, a second support and a third support;

the first bracket and the second bracket are used for installing the linear rail on the outer surface of the cooling triangular tube bundle, and the first bracket and the second bracket are arranged in a crossing way;

the third support is used for installing the outwards bent circular arc track on the outer surface of the cooling triangular tube bundle.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the cleaning frame can be slidably arranged on one side of the cooling triangle tube bundle by arranging the upper rail and the lower rail, the cleaning frame is driven to move along the rail track by the horizontal self-walking mechanism and the auxiliary walking mechanism, and meanwhile, a plurality of groups of cleaning spray heads are arranged on one side of the cleaning frame close to the cooling triangle tube bundle in parallel along the vertical direction, so that the cooling triangle tube bundle positioned on one side of the linear rail can be horizontally moved and washed; and be provided with the triangle water spray dish on the washing frame, can go up and down to wash the cooling triangle tube bank that is located curved circular arc track one side outward to combine horizontal flushing and lift to wash two kinds of modes, realize that whole cooling triangle tube bank does not have the flushing blind area, improve the cleaning performance.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a natural draft direct air cooling system heat exchange tube bundle flushing device of the present utility model at a cooling delta tube bundle bend;

FIG. 2 is a front view of the linear rail of FIG. 1 in accordance with the present utility model;

FIG. 3 is an enlarged view of the portion A of FIG. 1 in accordance with the present utility model;

FIG. 4 is an enlarged view of the portion B of FIG. 2 in accordance with the present utility model;

FIG. 5 is an enlarged view of FIG. 2 at C in accordance with the present utility model;

FIG. 6 is a schematic cross-sectional installation of the cooling delta tube bundle and rails of FIG. 1 in accordance with the present utility model;

FIG. 7 is a schematic view of the triangular water-spraying tray of FIG. 1 according to the present utility model;

in the figure: the upper rail 1, the lower rail 2, the linear rail 3, the outward curved circular arc rail 4, the rail bracket 5, the first bracket 51, the second bracket 52, the third bracket 53, the cleaning frame 6, the fixed frame 61, the telescopic frame 62, the lifting assembly 63, the triangular water spray tray 64, the cleaning nozzle 65, the horizontal self-walking mechanism 7, the fixed support 71, the guiding and positioning assembly 72, the mounting bracket 721, the fixed rod 722, the rail pulley 723, the driving unit 73, the motor 731, the primary sprocket 732, the rotating shaft 733, the roller 734, the secondary sprocket 735, the chain 736, the auxiliary walking mechanism 8, the C-shaped bracket 81, the fixed seat 82, the rotating wheel 83, the main pipe 9, the auxiliary pipe 10 and the air pipe 11.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-7, the utility model provides a heat exchange tube bundle flushing device of a natural ventilation direct air cooling system, which is used for cleaning the surface of a cooling triangular tube bundle, and comprises an upper rail 1 and a lower rail 2, wherein the upper rail 1 is fixedly arranged in the middle of the cooling triangular tube bundle through a rail bracket 5, the lower rail 2 is fixedly arranged at the bottom of the cooling triangular tube bundle through the rail bracket 5, a cleaning frame 6 is slidably arranged between the upper rail 1 and the lower rail 2, and a plurality of groups of cleaning spray heads 65 are arranged on one side, close to the cooling triangular tube bundle, of the cleaning frame 6 in parallel along the vertical direction and are used for flushing the surface of the cooling triangular tube bundle; the cleaning frame 6 comprises a fixed frame 61 and a telescopic frame 62, the top end of the fixed frame 61 is slidably mounted on the upper rail 1 through an auxiliary travelling mechanism 8, the bottom end of the fixed frame 61 is slidably mounted on the lower rail 2 through a horizontal self-travelling mechanism 7, the telescopic frame 62 is slidably mounted in the fixed frame 61 through a lifting assembly 63, triangular water spraying discs 64 are fixedly mounted at the upper end and the lower end of the telescopic frame 62, and the triangular water spraying discs 64 are connected with water inlets of the cleaning spray heads 65 through water pipes and water outlets of water pumps in reservoirs respectively.

In this embodiment, when the washing device washes the surface of the cooling triangle tube bundle, firstly, the lifting component 63 pushes the telescopic frame 62 out of the fixed frame 61, and the other end of the telescopic frame 62 is lifted to the top of the cooling triangle tube bundle, then the washing liquid in the reservoir is pumped into the washing nozzle 65 by the water delivery pump, and meanwhile, the horizontal self-walking mechanism 7 drives the washing frame 6 to move along the track of the track, so that the washing nozzle 65 can wash the outer surface of the cooling triangle tube bundle in a moving way; when the cleaning frame 6 moves to the bent angle of the cooling triangle tube bundle, and the air pipe 11 is arranged between the main pipe 9 and the auxiliary pipe 10 in the middle of the cooling triangle tube bundle, so that the cleaning frame 6 is blocked and cannot pass through, firstly, the horizontal self-travelling mechanism 7 is controlled to stop moving, the cleaning spray head 65 is controlled to stop flushing, then the lifting component 63 is controlled to retract the telescopic frame 62 into the fixed frame 61, and meanwhile, the telescopic frame 62 can lift and flush the bent angle of the cooling triangle tube bundle through the triangle water spraying disc 64 in the retracting process; after the telescopic frame 62 is retracted into the fixed frame 61, when the whole cleaning frame 6 can pass through the air pipe 11 arranged in the middle of the cooling triangular tube bundle, the horizontal self-walking mechanism 7 is controlled to move continuously, the cleaning frame 6 stops moving continuously after passing through the blocked air pipe 11, then the lifting assembly 63 is controlled to push the telescopic frame 62 out of the fixed frame 61, and lifting spraying is carried out on the surface of the cooling triangular tube bundle through the triangular water spraying disc 64; after the telescopic frame 62 moves to the top end of the cooling triangular tube bundle, the horizontal self-walking mechanism 7 is used for driving the whole cleaning frame 6 to carry out horizontal movement flushing, so that the two modes of horizontal flushing and lifting flushing are combined, the whole cooling triangular tube bundle is free of flushing blind areas, and the cleaning effect is improved.

It should be noted that: the lifting assembly 63 in this embodiment may adopt an air cylinder, a hydraulic cylinder, a rope lifting mechanism, or the like, so long as the telescopic frame 62 can be driven to lift in the fixed frame 61, and the conventional lifting technology is mature, so that no description will be given here; in addition, in this embodiment, solenoid valves are respectively installed on the water inlet pipelines of the cleaning nozzle 65 and the triangular water spraying disc 64, and are used for controlling the cleaning nozzle 65 and the triangular water spraying disc 64 to flush the cooling triangular tube bundles in different working states, when the cleaning frame 6 moves horizontally, the cleaning nozzle 65 is controlled to flush the cooling triangular tube bundles, and when the cleaning frame 6 moves up and down, the triangular water spraying disc 64 is controlled to flush the cooling triangular tube bundles; meanwhile, the triangular water spraying disc 64 performs lifting flushing on two sides of the bent angle of the cooling triangular tube bundle respectively.

The horizontal self-walking mechanism 7 comprises a fixed support 71, the structure of the fixed support 71 is in a C shape, the opening end of the fixed support 71 is horizontally arranged towards one side of the lower track 2, the top end of the fixed support 71 is fixedly arranged at the bottom end of the lower track 2, the outer surface of the fixed support 71 is slidably arranged on two opposite sides of the lower track 2 through a plurality of groups of guiding and positioning assemblies 72, two groups of driving units 73 are arranged on the fixed support 71, and the two groups of driving units 73 are positioned on two sides of the lower track 2 and used for driving the fixed support 71 and driving the lower track 2 to reciprocate along the track of the lower track 6.

Specifically, the driving unit 73 includes a motor 731, the motor 731 is fixedly installed at the top end of the fixed support 71, and a primary sprocket 732 is fixedly installed at one end of an output shaft of the motor 731; meanwhile, rollers 734 are rotatably mounted on the top end of the lower rail 2 through rotating shafts 733 on two opposite sides of the inner wall of the fixed support 71, one end of each rotating shaft 733 penetrates through and extends to the outer surface of the fixed support 71 to fixedly mount a secondary sprocket 735, and the outer surface of each secondary sprocket 735 is connected with the outer surface of each primary sprocket 732 through a chain 736.

In this embodiment, when this washing unit is in use, when the washing frame 6 is located the plane one side of cooling triangle tube bank, start motor 731 for motor 731 drives one-level sprocket 732 and rotates, then drive second sprocket 735 through chain 736 and rotate in step, make second sprocket 735 drive gyro wheel 734 and roll on the top of lower track 2 through pivot 733, thereby can drive washing frame 6 and remove along the orbit of lower track 2, and pump the washing liquid into washing shower nozzle 65 through water pump and water pipe, the surface of cooling triangle tube bank is washed through washing shower nozzle 65, thereby realize horizontal migration washing function.

Specifically, the guiding and positioning assembly 72 includes two mounting brackets 721, top parts of opposite surfaces of the two mounting brackets 721 are fixedly mounted on the outer surface of the fixed support 71, bottom parts of opposite surfaces of the two mounting brackets 721 are fixedly mounted with rail pulleys 723 through fixed rods 722, respectively, and the rail pulleys 723 are mounted on both sides of the inner wall of the lower rail 2; wherein, when the cleaning frame 6 moves, the rail pulleys 723 slide along the top end of the inner wall of the lower rail 2, so that the fixed support 71 can be guided and positioned by the two rail pulleys 723; and, because track pulley 723 fixed mounting is on fixed support 71, consequently can form certain frictional resistance with the inner wall of lower track 2 in the removal in-process for wash frame 6 when need stop the removal, can play certain friction cushioning effect, be convenient for guarantee that wash frame 6 can accurately stop in the settlement position, improve the operation accuracy of device.

In this embodiment, the auxiliary travelling mechanism 8 includes a C-shaped frame 81, an opening end of the C-shaped frame 81 is upward, an outer surface of the C-shaped frame 81 is fixedly mounted on the cleaning frame 6 and is located at the same side of the cleaning frame 6 as the horizontal self-travelling mechanism 7, two opposite sides of an inner wall of the C-shaped frame 81 are respectively rotatably mounted with a rotating wheel 83 through a fixing seat 82, and the rotating wheels 83 are rotatably mounted at two sides of the inner wall of the upper rail 1; when the washing frame 6 moves, the washing frame 6 can be supported in an auxiliary manner by rotating the rotating wheels 83 along the inner wall of the upper rail 1.

Specifically, the lower rail 2 and the upper rail 1 both comprise a straight rail 3 and an outward-curved circular arc rail 4, and two adjacent straight rails 3 are connected through the outward-curved circular arc rail 4 and are used for forming a triangular structure matched with the cooling triangular tube bundle, so that the cleaning frame 6 can flush the surface of the cooling triangular tube bundle along the track; while the track bracket 5 comprises a first bracket 51, a second bracket 52 and a third bracket 53; the first brackets 51 and the second brackets 52 are used for fixedly mounting the linear rail 3 on the outer surface of the cooling triangular tube bundle, the first brackets 51 and the second brackets 52 are arranged in a crossing manner, one second bracket 52 is mounted on each two first brackets 51 at intervals, and the third bracket 53 is used for fixedly mounting the outward-bent circular arc rail 4 on the outer surface of the cooling triangular tube bundle.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The utility model provides a natural draft direct air cooling system heat transfer tube bank washing unit for wash the surface of cooling triangle tube bank, its characterized in that: the cooling triangular tube bundle cleaning device comprises an upper rail (1) and a lower rail (2), wherein the upper rail (1) is installed in the middle of the cooling triangular tube bundle through a rail bracket (5), the lower rail (2) is installed at the bottom of the cooling triangular tube bundle through the rail bracket (5), a cleaning frame (6) is arranged between the upper rail (1) and the lower rail (2), a plurality of groups of cleaning spray heads (65) are arranged on one side, close to the cooling triangular tube bundle, of the cleaning frame (6), and the plurality of groups of cleaning spray heads (65) are arranged side by side along the vertical direction and used for flushing the surface of the cooling triangular tube bundle;

the cleaning frame (6) comprises a fixed frame (61), the top end of the fixed frame (61) is installed on the upper rail (1) through an auxiliary travelling mechanism (8), the bottom end of the fixed frame (61) is installed on the lower rail (2) through a horizontal self-travelling mechanism (7), a telescopic frame (62) is arranged in the fixed frame (61) through a lifting assembly (63), and triangular water spraying discs (64) are arranged at the upper end and the lower end of the telescopic frame (62) and used for lifting and flushing bent corners of triangular cooling tube bundles;

the cleaning spray head (65) and the water inlet end of the triangular spray disc (64) are respectively connected with the water outlet of the water delivery pump in the reservoir through water pipes.

2. The natural draft direct air cooling system heat exchange tube bundle flushing device according to claim 1, wherein: the horizontal self-walking mechanism (7) comprises a fixed support (71), the fixed support (71) is of a C shape, the opening end of the fixed support (71) faces the lower track (2) horizontally, the top end of the fixed support (71) is installed at the bottom end of the fixed frame (61), the outer surface of the fixed support (71) is installed at two opposite sides of the lower track (2) through a plurality of groups of guide positioning assemblies (72), and at least one group of driving units (73) are arranged on the fixed support (71) and used for driving the fixed support (71) and driving the cleaning frame (6) to move along the track of the lower track (2).

3. The natural draft direct air cooling system heat exchange tube bundle flushing device according to claim 2, wherein: the driving unit (73) comprises a motor (731), the motor (731) is arranged at the top end of the fixed support (71), and a primary chain wheel (732) is arranged at one end of an output shaft of the motor (731);

the inner wall opposite sides of fixed support (71) are installed gyro wheel (734) through pivot (733), gyro wheel (734) set up the top of lower track (2), the one end of pivot (733) runs through and extends to the surface of fixed support (71) is provided with second grade sprocket (735), second grade sprocket (735) pass through chain (736) with first order sprocket (732) are connected.

4. The natural draft direct air cooling system heat exchange tube bundle flushing device according to claim 2, wherein: the guide positioning assembly (72) comprises two mounting brackets (721), the tops of opposite surfaces of the two mounting brackets (721) are arranged on the outer surface of the fixed support (71), track pulleys (723) are respectively arranged at the bottoms of the opposite surfaces of the two mounting brackets (721) through fixing rods (722), and the track pulleys (723) are arranged on two sides of the inner wall of the lower track (2).

5. The natural draft direct air cooling system heat exchange tube bundle flushing device according to claim 1, wherein: the auxiliary travelling mechanism (8) comprises a C-shaped frame (81), the opening end of the C-shaped frame (81) is upwards arranged, the outer surface of the C-shaped frame (81) is arranged on the cleaning frame (6) and is positioned on the same side of the cleaning frame (6) with the horizontal self-travelling mechanism (7), rotating wheels (83) are respectively arranged on two opposite sides of the inner wall of the C-shaped frame (81) through fixing seats (82), and the two rotating wheels (83) are respectively positioned on the inner walls of two sides of the upper rail (1).

6. The natural draft direct air cooling system heat exchange tube bundle flushing device according to claim 1, wherein: the lower rail (2) and the upper rail (1) comprise a linear rail (3) and an outwards-bent circular arc rail (4), and two adjacent linear rails (3) are connected through one outwards-bent circular arc rail (4) and are used for forming a triangular structure matched with the cooling triangular tube bundle;

the track bracket (5) comprises a first bracket (51), a second bracket (52) and a third bracket (53);

the first bracket (51) and the second bracket (52) are used for installing the linear rail (3) on the outer surface of the cooling triangular tube bundle, and the first bracket (51) and the second bracket (52) are arranged in a crossing way;

the third bracket (53) is used for installing the outward-bending circular arc track (4) on the outer surface of the cooling triangular tube bundle.