CN212692674U

CN212692674U - Air cooling tower air inlet optimizing device with temperature reducing nozzle

Info

Publication number: CN212692674U
Application number: CN202021744125.2U
Authority: CN
Inventors: 秦春营
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-03-12
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses an air cooling tower air inlet optimizing device with a temperature reducing nozzle, which comprises a bracket and a blade grid which are vertically arranged along the outer side of a radiator area of an air cooling tower, wherein the bracket is positioned at the outer side of a cooling triangular unit and is fixed near the outer intersection line of cooling columns of two adjacent cooling triangular units; the blade cascade is composed of blades and is positioned on the bracket, and a reducing channel similar to a nozzle is formed between every two adjacent blades; the blades are hollow structures, the outer sides of the blades are provided with air distribution fins, the two ends of the blades are provided with headers, and the lowest header is provided with a cold water inlet and a cold water outlet. In the actual operation process of the air cooling tower, the temperature of the ambient air is reduced and the speed is increased when the ambient air passes through the nozzle structure of the blade grids, the blade grids have an adjusting effect on the wind direction of the ambient air, the air flow field structure in the cooling triangular unit can be effectively improved, and the heat exchange effect of the radiator is improved; cold water can be introduced into the blades through the header, the temperature of ambient air entering the cooling triangular unit is reduced, and the cooling performance of the air cooling tower is improved.

Description

Air cooling tower air inlet optimizing device with temperature reducing nozzle

Technical Field

The utility model belongs to the technical field of the air cooling tower of fire/nuclear power station, concretely relates to air cooling tower air inlet optimizing apparatus with attemperation nozzle.

Background

In recent years, air-cooled generator sets are widely applied to coal-rich and water-deficient areas in China due to excellent water-saving performance. Aiming at a specific air cooling system, under the condition that the unit load, the cooling water flow, the cold end cleaning degree and the shutter opening degree are not changed, the temperature and the speed of air at the inlet of an air cooling tower are main influence factors of the water outlet temperature of the air cooling tower, particularly under the high-temperature condition in summer, the air at the inlet of the air cooling tower is higher, the heat exchange performance of a radiator is poorer, and the water outlet temperature of the air cooling tower is increased, so that the cooling efficiency and the economy of the air cooling unit are directly influenced.

The Chinese patent application, application No. 201810614093.5, discloses a nozzle evaporation precooling natural draft air cooling tower and a cooling method, comprising: the nozzle system comprises a nozzle system which is arranged on the outer side of an air inlet of the tower drum and has a water spraying direction perpendicular to the central axis of the tower drum, and a nozzle system which is arranged under the heat exchanger and has a water spraying direction parallel to the central axis of the tower drum. A nozzle evaporation precooling natural ventilation air cooling tower and a cooling method are disclosed: (1) the water distribution system comprises an annular water distribution pipe and a vertical water distribution pipe, wherein the annular water distribution pipe and the vertical water distribution pipe are communicated with an external water source, (2) a plurality of vertical nozzles in the vertical nozzle system are cylindrically arranged along an air inlet and are arranged on the vertical water distribution pipe, the plurality of vertical nozzles on the same vertical water distribution pipe are arranged in a sequentially intensive mode from top to bottom, (3) the plurality of annular water distribution pipes are concentrically arranged, the diameter difference between every two adjacent annular water distribution pipes is constant, and (4) a top cover is arranged between the vertical nozzle system and the tower barrel and is an annular plate sleeved on the tower barrel. The utility model discloses an although utilize evaporative cooling's mode to cool down the imported air of air cooling tower to improve the efficiency of natural draft air cooling tower in the operation of summer, but this utility model does not adjust imported air mass flow and temperature according to nozzle and structure on every side, and the structure of nozzle is different completely with this application with the optimization purpose.

Disclosure of Invention

The problem that exists to prior art, the utility model aims at providing an air cooling tower air inlet optimization device with temperature reduction nozzle for solve under the high temperature condition in summer, air cooling tower import air temperature is higher, and radiator heat transfer performance is relatively poor, and air cooling tower leaving water temperature risees, the problem that air cooling unit cooling efficiency reduces, the utility model discloses reduce air cooling tower import air temperature, improve import air velocity, and then improve the heat transfer performance of air cooling tower.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

the utility model provides an air cooling tower air inlet optimizing apparatus with temperature reduction nozzle, includes along the support and the cascade of the regional outside vertical arrangement of air cooling tower radiator, its characterized in that: the bracket is positioned at the outer side of the cooling triangular unit and is fixed near the outer intersection line of the cooling columns of two adjacent cooling triangular units; the blade cascade is composed of blades and is positioned on the bracket, and a reducing channel similar to a nozzle is formed between every two adjacent blades; the blades are of a hollow structure, the two ends of each blade are provided with headers, and the outer sides of the blades are provided with flow equalizing fins; the bottommost header is provided with a cold water inlet and a cold water outlet, and water can be distributed to the interior of the blade; the surface of the flow equalizing fin is of a corrugated structure, so that the flow equalizing effect on ambient air can be enhanced.

The support is vertically arranged on the outer side of the cooling triangular unit of the air cooling tower, the height of the support is equal to that of the widening platform of the air cooling tower, and the support is fixed near the outer intersection line of two adjacent cooling columns.

The blade cascade is divided intonGroups, each group having a width equal to the circumferential distance of one cooling delta unitlHeight ofh/nWhereinhThe height of the platform is expanded for the air cooling tower,n=1、2、3、4、5、6。

the blade cascade is composed of blades, and each blade is fixed on the support in a vertical state and is distributed at equal intervals in the horizontal direction.

The two adjacent blades can form a tapered channel similar to a nozzle in the horizontal direction.

The outer edge of the tip end of each blade with the wedge-shaped structure is provided with a flow equalizing fin, and the surface of each flow equalizing fin is of a corrugated structure.

The blades are of an internal hollow structure, two ends of each blade are communicated with the headers, the header at the bottommost end is provided with a cold water inlet and a cold water outlet, and a valve is arranged at the cold water inlet and used for opening or closing the cooling water channel and adjusting the flow of cooling water in the blades.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses an air cooling tower air inlet optimizing apparatus with attemperator nozzle, through set up the cascade outside cooling triangle air intake, the cascade comprises the wedge cavity blade that both sides are the curved surface, the blade is the wedge structure of both sides curved surface, two adjacent blades can form the convergent passageway of similar nozzle at the horizontal direction, the blade both ends communicate with each other with the header, the bottommost header is equipped with cold water and imports and exports, cold water import department is equipped with the valve, be used for opening or closing the cold water passageway, and adjust the cold water flow in the blade, through letting in cold water in the blade, combine to form the convergent passageway of similar nozzle between two adjacent blades, reduce air cooling tower import air temperature, improve import air velocity, thereby improve the heat transfer performance of air cooling tower.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting implementations with reference to the accompanying drawings.

Fig. 1 is the utility model discloses an air cooling tower air inlet optimizing apparatus with nozzle that subtracts the temperature arranges the schematic diagram.

Fig. 2 is the utility model discloses an air cooling tower air inlet optimizing apparatus top view with temperature reduction nozzle.

Fig. 3 is the utility model discloses a blade cross-sectional view of air cooling tower air inlet optimizing apparatus with attemperation nozzle.

In the figure: 1-cooling the triangle; 2-cascade of blades; 3-a blade; 4-header collection; 5-a bracket; 6-flow equalizing fins.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the present invention is further explained by combining with the following embodiments.

In the case of the utility model, as shown in fig. 1, the air intake optimization device with the temperature reduction nozzle of the air cooling tower of the utility model is arranged outside the cooling triangle 1, the width of the air intake optimization device is equal to the circumferential distance of one cooling triangle unit of the air cooling tower, and for the convenience of installation and maintenance, the air intake optimization device is divided into six parts in the vertical direction, and the total height is equal to the height of the widening platform of the air cooling tower; the air inlet optimizing device mainly comprises a blade cascade 2 and a support 5, the blade cascade 2 is composed of a plurality of groups of vertically arranged blades 3, two sides of each blade 3 are of curved surface wedge-shaped structures, adjacent two blades can form gradually-reducing channels similar to nozzles in the horizontal direction, the inside of each blade 3 is of a hollow structure, two ends of each blade are connected with a header 4, the headers 4 can distribute cold water to the blades, smoothness of the cold water channels is guaranteed, the bottommost header 4 is provided with a cold water inlet and outlet, a valve is arranged at the cold water inlet and can be used for opening or closing the cold water channels, and the flow of the cold water inside the blades is adjusted.

When the air cooling system operates under the high-temperature condition in summer, the optimizing device can properly increase the flow of cold water in the blades 3 according to the ambient temperature and the temperature of cooling water, and reduce the ambient air temperature and increase the ambient air speed by combining the nozzles formed by two adjacent blades 3, so that the heat exchange effect of the air cooling tower is improved; when the air cooling system operates under the condition of spring or autumn, a valve at a cold water inlet of the header 4 can be properly closed, and the cold water flow in the blade 3 is reduced; when the air cooling system operates under severe cold conditions in winter, the temperature of ambient air is low, a valve at a cold water inlet of the header 4 can be directly closed, and the ambient air is adjusted only under the action of the blades 3 and the nozzles, so that the distribution of an air flow field in the cooling triangular unit can be improved, and the heat exchange performance of the radiator can be improved.

As shown in fig. 2, the utility model relates to an air cooling tower air inlet optimizing apparatus's top view with temperature reduction nozzle, cascade 2 comprises the blade 3 of following the equidistant arrangement of horizontal direction, and two adjacent blades can form the convergent passageway of similar nozzle structure in the horizontal direction, utilize the characteristic of air cooling when the nozzle, can reduce air cooling tower import air temperature, improve the cooling effect of radiator, promote the cooling capacity of air cooling tower.

As shown in fig. 3, which is a sectional view of the blade, the bottom surface of the blade 3 is parallel to the plane of the louver, the outer edge of the tip of the blade is provided with a flow equalizing fin, and the surface of the flow equalizing fin is of a corrugated structure, which is helpful for adjusting the wind direction entering the cooling triangular unit and improving the air flow field structure inside the cooling triangular unit.

The utility model relates to an air cooling tower air inlet optimizing apparatus with temperature reduction nozzle through set up the cascade of compriseing vertical wedge blade in the cooling triangle unit air intake outside, constitutes the cooling effect of nozzle with the help of inside cold water of blade and adjacent blade, reduces air cooling tower air inlet temperature, improves radiator inlet wind speed to improve the cooling effect of air cooling tower radiator, reduce the unit backpressure, improve the economic nature of unit operation.

The basic principles, essential features and advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but rather is capable of being embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an air cooling tower air inlet optimizing apparatus with temperature reduction nozzle, includes along the support and the cascade of the regional outside vertical arrangement of air cooling tower radiator, its characterized in that:

the bracket is positioned at the outer side of the cooling triangular unit and is fixed near the outer intersection line of the cooling columns of two adjacent cooling triangular units; the blade cascade is composed of blades and is positioned on the bracket, and a reducing channel similar to a nozzle is formed between every two adjacent blades; the blades are of a hollow structure, the two ends of each blade are provided with headers, and the outer sides of the blades are provided with flow equalizing fins; the bottommost header is provided with a cold water inlet and a cold water outlet, and water can be distributed to the interior of the blade; the surface of the flow equalizing fin is of a corrugated structure, so that the flow equalizing effect on ambient air can be enhanced.

2. The air cooling tower air inlet optimization device with the temperature reduction nozzle as claimed in claim 1, is characterized in that: the support is vertically arranged on the outer side of the cooling triangular unit of the air cooling tower, the height of the support is equal to that of the widening platform of the air cooling tower, and the support is fixed near the outer intersection line of two adjacent cooling columns.

3. The air cooling tower air inlet optimization device with the temperature reduction nozzle as claimed in claim 1, is characterized in that: the blade cascade is divided into n groups in the vertical direction, the width of each group is equal to the circumferential distance l of one cooling triangular unit, the height of each group is h/n, h is the height of the widening platform of the air cooling tower, and n is 1, 2, 3, 4, 5 and 6.

4. The air cooling tower air inlet optimization device with the temperature reduction nozzle as claimed in claim 1, is characterized in that: the blades are fixed on the bracket in a vertical state and are distributed at equal intervals in the horizontal direction.

5. The air cooling tower air inlet optimization device with the temperature reduction nozzle as claimed in claim 1, is characterized in that: the two sides of each blade are of a wedge-shaped structure with curved surfaces, and a tapered channel similar to a nozzle can be formed between every two adjacent blades in the horizontal direction.

6. The air cooling tower air inlet optimization device with the temperature reduction nozzle as claimed in claim 1, is characterized in that: the outer edge of the tip of each blade is provided with a flow equalizing fin, and the surface of each flow equalizing fin is of a corrugated structure.

7. The air cooling tower air inlet optimization device with the temperature reduction nozzle as claimed in claim 1, is characterized in that: the blades are of an internal hollow structure, two ends of each blade are communicated with the headers, the header at the bottommost end is provided with a cold water inlet and a cold water outlet, and a valve is arranged at the cold water inlet and used for opening or closing a cold water channel and adjusting the flow of cold water in the blades.