SU1755717A3 - Counterflow cooling tower sprinkler - Google Patents

Abstract

The use of contact heat and mass transfer sprinklers of counterflow cooling towers. SUMMARY OF THE INVENTION The counterflow cooling tower fill sprinkler comprises a block of vertical tubular elements 1 with corrugated inner and outer helical surfaces. Elements 1 are installed in rows and interconnected by fastening means 2, made in the form of curvilinear vertical corrugated on both sides of sheets of sections of M-shaped cross section. Curvature of M-shaped section corresponds to the curvature of the outer surface of adjacent elements 1 Means 2 are installed in the lower and upper The areas of the elements 1 are flush with the upper edges. By means of the means 2, the elements 1 are installed in a checkerboard pattern, while the cell 3 between the means 2 is made with a cross section area The values are equal to the cross-sectional area of the tubular elements 1. The elements 1 and the means 2 can be made with longitudinal, transverse corrugations screw with different helix angles of inclination, with different cross-sectional shapes of corrugations 11pfl-ly 10 il

Description

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The invention relates to heat and power engineering, and to estates to contact heat and mass transfer irrigators. devices - counterflow cooling towers.

Known sprinkler counterflow cooling tower, containing a block of horizontal and vertical tubular elements.

The main disadvantages of such an irrigator are high aerodynamic drag and complex installation techniques, since the irrigator is made of alternating rows and layers of horizontal and vertical pipes. High aerodynamic drag is a consequence of the fact that the air flows overlap the surface of the horizontal pipes, and the vertical elements are installed close to each other. In addition, the heat and mass transfer efficiency is not high enough, since only the outer surfaces of the horizontal elements participate in the process.

The closest in technical essence and the achieved effect to the proposed is the irrigation counter-current cooling tower, which contains a block of vertical tubular elements installed with corrugated inner and outer surfaces, spacing fasteners placed in the lower and upper parts of the elements.

The main disadvantage of the known irrigator is the great laboriousness and low-tech installation, which is carried out directly under cooling tower conditions. In addition, the heat and mass transfer efficiency is also low due to the square arrangement of the elements, which in the cooling towers with a circular cross section does not allow placing them evenly over the cross section. The annular space of the irrigant is not sufficiently used.

The aim of the invention is to improve the processability of installation and the efficiency of heat and mass transfer.

This goal is achieved by the fact that in the counter-current cooling tower fill, which contains a block of vertical tubular elements installed with rows of corrugated inner and outer surfaces, spacing fasteners placed in the lower and upper parts of the elements, the spacing and fastening means are in the form of vertical corrugated sheets, installed between two adjacent rows of pipes and flush with the upper edges of the latter and rigidly connected to the edges, the sheets are made of sections M-shaped second cross-sectional shape, wherein the central portion of each section is formed

with a curved surface corresponding to the outer surface of the adjacent tubular element. In addition, the sheets in adjacent rows are offset from one another by the width of the section of the M-shape with the formation between the sections of the irrigator cell with a cross-sectional area equal to the cross-sectional area of the tubular elements

0 Tubular elements and sheets can be made of a hydrophobic or hydrophilic material, or a suitable coating. The corrugations of the tubular elements and sheets are screw-shaped, while they are made with a pitch varying in length or with segments with opposite helix directions. Corrugations can be made both longitudinal and transverse. Corrugations of elements and sheets can be

0 are made of sinusoidal, triangular or polygonal profile.

FIG. 1 shows a sprinkler, top view; in fig. 2 - the same, side view; in fig. 3 - placement of irrigator in the section of the gradient 5; in fig. 4 shows an example of a tubular element with portions having variable helix directions of the corrugations; in fig. 5 - execution of elements with transverse corrugations; in fig. 6 - performance of elements with the opposite direction of the helix of the corrugation; in fig. 7 - execution of elements with longitudinal corrugations; Figs 8-10 show corrugations with sinusodal, triangular and polygonal profiles, respectively.

The sprinkler of the counterflow cooling tower contains a block of vertical tubular elements 1 with corrugated screw inner and outer surfaces.

0 Elements 1 are installed in rows and interconnected by spacers and fasteners 2. Tools 2 are made in the form of curved vertical corrugated sheets on both sides

5 of the sections of the M-shaped cross section. These sheets can be made by stamping. The central part of the section — curvilinear, M-shaped — is provided with a curvature corresponding to the outer surface of the abutting elements 1. The fastening means 2 are installed in the lower and upper portions of the tubular elements 1 flush with them and attached to them by welding, melting or gluing their edges. In accordance with the proposed form of fasteners 2, they are placed between every two adjacent rows of pipes. The fasteners 2 are made in various lengths (or their length is set in the assembly process itself

irrigator, which is produced outside the cooling tower). By installing means 2 of different lengths, you can create a sprinkler in a block of any cross sectional shape. In the case of a gradmrci with a round section (Fig. 3), the tubular elements are completely and evenly distributed throughout the section. As can be seen from FIG.

1, using fasteners 2 in the sprinkler, tubular elements are arranged in a checkerboard pattern, which is ensured by displacing the fasteners 2 in each row by the width of an M-shaped section. At the same time, the irrigator cell 3 formed between the sections is made with a cross-sectional area equal to the cross-sectional area of the tubular elements 1, which ensures equal aerodynamic drag over the irrigator section. The tubular elements 1 and fastener sheets 2 can be made of both hydrophobic and hydrophilic material, or from appropriate construction materials with appropriate coatings. The implementation of both the tubular elements 1 and the surfaces of the means 2 with screw corrugations of 4 different shapes allows for an intensive heat and mass transfer during the film flow of water. In order to intensify the heat and mass transfer under changing conditions of water and air temperature along the height, the tubular elements 1 and the fastening means 2 are made with screw corrugations 4 with variable, for example, increasing (Fig. 2) downward steps, i.e. with increasing tilt angle of the corrugations to the vertical. Within the same element 1, sections with the opposite direction of the helix of the corrugation (Fig. 4) can be made or within one section, i.e. intersecting corrugations 4 (Fig, 5), or corrugations can be made longitudinal, transverse. In cross section, the corrugations can be sinusoidal, triangular, polygonal

The water to be cooled is sprayed onto the sprinkler, distributed over the inner and outer surfaces of the tubular elements 1 and fasteners.

2. Water along the screw depressions, the corrugation 4 flows, interacting with the upward air flow. When changing the direction of the corrugation or changing the angle of inclination, and especially in the case of intersecting corrugation 4 (FIG. 5), an additional effect arises from film breakdown, turbulence in air and water flows. The uniform aerodynamic resistance of the irrigator over the entire cross section of the cooling tower creates conditions for increasing the efficiency of heat and mass transfer and uniform load of the cooling tower.

Claims (12)

1. Sprinkler protigzotochnoy cooling tower containing a block of vertical tubular members installed with corrugated inner and outer surfaces, spacing fasteners located in the bottom and the upper parts of the elements, characterized in that, in order to improve the processability of installation and the efficiency of heat and mass transfer, the spacers and fasteners are made in the form of vertical corrugated sheets installed between two adjacent rows of pipes and flush with the top edges of the latter and rigidly connected to the edges, the sheets are made from the sections of the M-shaped a cross-sectional shape, wherein the central part of each part is made with a curved surface corresponding to the outer surface of the adjacent tubular element. 2 Sprinkler pop, 1, characterized in that the sheets in adjacent rows are offset from one another by the width of the section of the M-shape with the formation between the cells of the irrigator with a cross-sectional area equal to the cross-sectional area of tubular elements 3, Sprinkler according to claim. 1, characterized in that the tubular elements and sheets made of hydrophobic material or coating. 4.Or, ostel by l. 1, that is, so that the tubular elements and sheets are made of a hydrophilic material or coating. 5, Sprinkler under item 1, characterized in that the corrugations of the tubular elements and sheets are screw, 6. The enlarger according to claim 5, of which is the fact that the corrugations of the elements and sheets are made with varying length shagm. 7. The endeavor according to claim 5, of which is the elements that are made with areas with opposite directions helix corrugation. 8, Sprinkler pop, 1, characterized in that the corrugations of the elements and sheets are made longitudinal. 9. Sprinkler pop. 1, characterized in that the corrugations of the elements and sheets are made transverse. 10, Sprinkler popp. 1-9, referring to the fact that the corrugations of elements and sheets are made of a sinusoidal profile 11, Sprinkler according to claims 1–9, differing from the fact that the corrugations of the elements and sheets are made of a triangular profile. 12. Sprinkler on PP. 1-9, characterized in that the corrugations of elements and sheets are made of a polygonal profile. Ju / five.3 X four X four fieA Fig 5 Phage. 2 / flue 6 Fig four FIG. 8 V v u FIG. 9 FIG. ten