阅读说明：本技术 一种带有减温喷嘴的空冷塔进风优化装置 (Air cooling tower air inlet optimizing device with temperature reducing nozzle ) 是由 秦春营 于 2020-08-20 设计创作，主要内容包括：本发明专利公开了一种带有减温喷嘴的空冷塔进风优化装置,该装置包括沿空冷塔散热器区域外侧竖直布置的支架和叶栅,支架位于冷却三角单元外侧,固定在相邻两个冷却三角单元的冷却柱外交线附近；叶栅由叶片构成,位于支架上,相邻两个叶片之间形成类似喷嘴的渐缩通道；叶片为中空结构,外侧设有分风鳍片,两端设有联箱,最底端联箱设有冷水进出口。在空冷塔实际运行过程中,环境空气通过叶栅的喷嘴结构时温度降低、速度增大,叶栅对环境空气的风向具有调节作用,能够有效改善冷却三角单元内部的空气流场结构,提高散热器的换热效果；通过联箱可向叶片内通入冷水,降低进入冷却三角单元的环境空气温度,进而提高空冷塔的冷却性能。(The invention discloses an air cooling tower air inlet optimization device with a temperature reducing nozzle, which comprises a bracket and a cascade which are vertically arranged along the outer side of a radiator area of an air cooling tower, wherein the bracket is positioned on 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.)

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 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。

4. 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 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.

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 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.

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.

Technical Field

The invention belongs to the technical field of air cooling towers of fire/nuclear power stations, and particularly relates to an air inlet optimization device with a temperature reduction nozzle for an air cooling tower.

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. Although the inlet air of the air cooling tower is cooled by an evaporative cooling mode, so that the operation efficiency of the natural draft air cooling tower in summer is improved, the inlet air flow and the temperature of the natural draft air cooling tower are not adjusted according to the nozzle and the surrounding structure of the nozzle, and the structure and the optimization purposes of the nozzle are completely different from those of the natural draft air cooling tower.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide an air inlet optimization device of an air cooling tower with a temperature reduction nozzle, which is used for solving the problems that the inlet air temperature of the air cooling tower is higher, the heat exchange performance of a radiator is poorer, the outlet water temperature of the air cooling tower is increased and the cooling efficiency of an air cooling unit is reduced under the high-temperature condition in summer.

In order to achieve the purpose, the technical scheme of the 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 invention has the following beneficial effects:

the invention relates to an air cooling tower air inlet optimization device with a temperature reduction nozzle, which is characterized in that a cascade is arranged outside an air inlet of a cooling triangle, the cascade is composed of wedge-shaped hollow blades with curved surfaces at two sides, the blades are in wedge-shaped structures with curved surfaces at two sides, adjacent two blades can form a gradually-reduced channel similar to the nozzle in the horizontal direction, two ends of each blade are communicated with a header, the header at the bottommost end is provided with a cold water inlet and a cold water outlet, a valve is arranged at the cold water inlet for opening or closing the cold water channel and adjusting the flow of cold water in the blades, and the gradually-reduced channel similar to the nozzle is formed between the adjacent two blades by introducing the cold water into the blades, so that the inlet air temperature of the air cooling tower is reduced, the inlet air speed is increased.

Drawings

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

FIG. 1 is a schematic layout of an air cooling tower air intake optimization device with a desuperheating nozzle according to the present invention.

FIG. 2 is a top view of an air cooling tower air intake optimization device with a desuperheating nozzle of the present invention.

FIG. 3 is a sectional view of a blade of an air cooling tower air inlet optimization device with a temperature reduction 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, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

In the case of the invention, as shown in fig. 1, the air cooling tower air inlet optimization device with the temperature reduction nozzle is arranged outside a cooling triangle 1, the width of the air cooling tower air inlet optimization device is equal to the circumferential distance of one cooling triangle unit of the air cooling tower, the device is divided into six parts in the vertical direction for convenience of installation and maintenance, and the total height of the device is equal to the height of an air cooling tower widening platform; 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 top view of the air intake optimization device with the temperature-reducing nozzle of the air cooling tower of the invention is that the cascade 2 is composed of blades 3 which are arranged at equal intervals along the horizontal direction, and two adjacent blades can form a gradually-reducing channel similar to the nozzle structure in the horizontal direction.

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.

According to the air cooling tower air inlet optimization device with the temperature reduction nozzle, the cascade consisting of the vertical wedge-shaped blades is arranged on the outer side of the air inlet of the cooling triangular unit, and the air inlet temperature of the air cooling tower is reduced and the air inlet speed of the radiator is increased by means of the cooling effect of the nozzle formed by cold water in the blades and the adjacent blades, so that the cooling effect of the radiator of the air cooling tower is improved, the back pressure of a unit is reduced, and the running economy of the unit is improved.

While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. 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.