CN103134380A

CN103134380A - Management and utilization system of environmental wind of cooling tower

Info

Publication number: CN103134380A
Application number: CN2011103759763A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-23
Filing date: 2011-11-23
Publication date: 2013-06-05

Abstract

A management and utilization system of environmental wind of a cooling tower relates to a system for managing and utilizing environmental crosswind around the cooling tower of a thermal power plant wet cooling unit. A device of the system is composed of guide plates, a guide plate separation membrane, a communicated wind collecting pipe (or an air bellow), an inlet check valve, a wind distribution pipeline and a hood. The management and utilization system uses the guide plates to divide an exhaust inlet of the cooling tower into two areas. An inner area is surrounded and protected by the guide plate 2 to be capable of being matched with an air inlet of the cooling tower to build a stable air inlet flow field. An outer area is divided into a plurality of guide zones by using a middle separation plate between the guide plate 2 and the guide plate 1 according to needs, and wind coming from the outer area is guided by the guide zones to be led in the wind collecting pipe (or the air bellow) through the check valve designed on the wind collecting pipe (or the air bellow). A check valve on a leeward or crosswind face is closed, wind in the wind collecting pipe (or the air bellow) serves as motive power airflow to be blown to a raining area in the cooling tower through the wind distribution pipeline, and the hood at a port of the wind distribution pipeline prevents circulating water from dropping in the wind distribution pipeline.

Description

A kind of cooling tower ambient wind management and utilization system

Technical field

The invention belongs to the thermal power generation field, particularly clammy unit cooling tower surrounding environment crosswind is managed the system of utilization.

Background technology

Cooling tower is the key equipment of the clammy unit in thermal power plant, is to set up steam turbine vacuum, and the necessary condition that the cold junction thermal source is taken away.Yet due to the existence of environment crosswind, with and the uncontrollability of direction and wind speed, economy, safety, the stable operation of unit has all been brought very large challenge.

For clammy unit, Byelorussia, domestic Shandong University etc. have carried out a large amount of research, and the existence that draws crosswind causes the cooling tower air intake inhomogeneous, and at the vertical whirlpool of the inner generation of cooling tower, cause the problems such as the cooling tower intake reduces, steam-water ratio is uneven, the dynamic minimizing of film-cooled heat.Be hundred the evil and none benefit.For this reason, they propose to build windbreak (or the aerofoil profile of keeping out the wind) around cooling tower, thereby ambient wind is carried out the rectification utilization.Also take at present to increase the ways such as cross wall both at home and abroad and reduce the environment Wind effect.

Present technology mostly rests on and weakens on the aspect of environment crosswind on Air-Cooling Island heat exchange impact, utilizes effect not too obvious to ambient wind.

Summary of the invention

The negative effect that cooling tower is produced in order fundamentally to overcome the environment crosswind, and the environment crosswind is converted into the low-temperature receiver that can control fully and effectively utilize, the present invention is divided into inside and outside two zones with the heat transmission equipment periphery.Inner region is less to the susceptibility of ambient wind, can coordinate the cooling tower inlet scoop to set up to stablize the cold wind source.Outskirt utilizes valley effect and non-return air door, and crosswind is initiatively introduced the pipe (or bellows) of calling prisoners in after letting them out for exercise, and by rectification and cloth wind system, the ambient wind of income is effectively utilized.

Technical scheme of the present invention is as follows:

A kind of cooling tower ambient wind management and utilization system.It is characterized in that: this device is comprised of call prisoners in after letting them out for exercise pipe (or bellows), non-return flap, wind-distributing pipe road and the blast cap of deflector, deflector barrier film, connection.

Described deflector is by deflector 1(or ground along the ground direction) and with deflector 2(that ground forms certain angle of flare can be curved surface, can be also the plane) form, by deflector 2, the cooling tower air inlet is divided into two zones, zone between deflector 2 and cooling tower air inlet is called inner region, deflector 2 and deflector 1(or ground) between the zone be called outskirt.Utilize the central dividing plate film to be separated into a plurality of diversion belts between the outside of deflector 2 and deflector 1 as required, diversion belt be the wind comes from by design at the non-return flap introducing in pipe (or bellows) outside of the calling prisoners in after letting them out for exercise pipe (or bellows) of calling prisoners in after letting them out for exercise this direction.Pipe (or bellows) the mutually UNICOM of calling prisoners in after letting them out for exercise of different directions, the ambient wind after collecting blows to by cooling tower inside the district that drenches with rain by the wind-distributing pipe road.The flow distribution in wind-distributing pipe road can be optimized design according to different units flow fields needs, or is designed to adjustable.

Innovative point of the present invention is:

1. deflector 2 can play the effect of windbreak, and the environment crosswind is kept apart, and is subjected to ambient wind to affect very little inner region as the stable air inlet of cooling tower with foundation.

2. deflector 2 and deflector 1(or ground) set up outskirt on circumferential, outskirt is separated into little diversion belt as required, utilize the valley effect that the wind of windward side is all collected by diversion belt, and introduce by the non-return flap that root is connected with the pipe (or bellows) of calling prisoners in after letting them out for exercise and call prisoners in after letting them out for exercise pipe (or bellows) as power wind.

3. the pipe (or bellows) of calling prisoners in after letting them out for exercise designs non-return flap on each direction, guarantee that the wind in lee face is called prisoners in after letting them out for exercise pipe (or bellows) can not leak away.

4. the ambient wind after collecting by pipe (or bellows) rectification of calling prisoners in after letting them out for exercise after, blow to the district that drenches with rain by design direction by the wind-distributing pipe road in cooling tower.

5. can realize that by this device the cooling tower air intake is even, eliminate the air-flow dead band, and can reduce gas-flow resistance, improve cooling effectiveness, reduce the temperature of recirculated water.

Description of drawings

Fig. 1 is a kind of embodiment schematic diagram provided by the invention.

Fig. 2 says one's intention as revealed in what one says cap schematic diagram for the invention provides a kind of wind-distributing pipe.

The specific embodiment

Below in conjunction with accompanying drawing, operation principle of the present invention, concrete structure and enforcement are further described:

Fig. 1 is for the invention provides a kind of embodiment schematic diagram.The present invention utilizes deflector 2 that cooling tower air intake region separation is inner region and outskirt two zones.Inner region is not subjected to the external environment wind effect substantially owing to being subject to going along with sb. to guard him of deflector 2, can coordinate the cooling tower inlet scoop to set up stable air intake flow field.

When outskirt becomes the windward side, the wind comes from the guiding of diversed plate along deflector 1 outside and deflector barrier film, diversed plate 2 and deflector 1(or ground) between the valley effect that forms of gradual shrinkage runner accelerate, blow to the non-return air door at place, ground.Greater than the pressure in the pipe (or bellows) of calling prisoners in after letting them out for exercise, non-return flap is opened due to extraneous blast, and the pipe (or bellows) of calling prisoners in after letting them out for exercise begins to collect ambient wind.

When outskirt becomes lee face or crosswind face, be not less than the air pressure of outskirt due to the air pressure in the pipe (or bellows) of calling prisoners in after letting them out for exercise, non-return flap is closed, and the air in the pipe (or bellows) of calling prisoners in after letting them out for exercise can not leak.

The pipe (or bellows) of calling prisoners in after letting them out for exercise has been collected and has been formed certain blast after the environment crosswind, upwards blows to the district that drenches with rain in cooling tower by the wind-distributing pipe road.Can realize the wind comes from of whichever direction all is converted into the power wind of the cooling district's recirculated water that drenches with rain that makes progress.

Over against the recirculated water that falls, fall into wind-distributing pipe road for fear of the recirculated water in the district that drenches with rain due to the wind-distributing pipe road, special design a blast cap.Schematic diagram such as Fig. 2.

Claims

1. cooling tower ambient wind management and utilization system, it is characterized in that: this device is comprised of call prisoners in after letting them out for exercise pipe (or bellows), non-return air door, wind-distributing pipe road and the blast cap of deflector, deflector barrier film, connection.

2. deflector claimed in claim 1, is characterized in that it can being surface plate, can be also curved slab; Plate hight can carry out specific design according to the height of cooling tower air inlet.

3. deflector barrier film claimed in claim 1, is characterized in that at right angle setting (or welding) in the outside of deflector, is divided into a plurality of parts to play with incoming flow wind.

4. the pipe (or bellows) of calling prisoners in after letting them out for exercise claimed in claim 1, is characterized in that being arranged in below cooling tower, to collect the use of the wind comes from the deflector outside.

5. non-return air door claimed in claim 1 is characterized in that being arranged on and calls prisoners in after letting them out for exercise on pipe (or bellows), with the ambient wind active collection that the deflector guiding is come, and the wind in the pipe (or bellows) that prevents from calling prisoners in after letting them out for exercise leak lee face or crosswind face.

6. wind-distributing pipe claimed in claim 1 road, is characterized in that being connected with the pipe (or bellows) of calling prisoners in after letting them out for exercise, and blows to from cooling tower inside the district that drenches with rain with wind guiding that will be wherein.

7. blast cap claimed in claim 1 is characterized in that being arranged in the head of wind-distributing pipe, and the recirculated water in the district that prevents from the one hand drenching with rain splashes in wind-distributing pipe, on the other hand again bootable cooling air by the direction of setting to blowing up.