CN218454606U

CN218454606U - Hyperbolic cooling tower with reinforced waist line

Info

Publication number: CN218454606U
Application number: CN202222263320.9U
Authority: CN
Inventors: 杨富强; 贾培庆; 张彬; 高肇春
Original assignee: Huaneng Laiwu Power Generation Co Ltd
Current assignee: Huaneng Laiwu Power Generation Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-02-07
Anticipated expiration: 2032-08-26

Abstract

The utility model provides a hyperbola cooling tower that stringcourse is strengthened, including the horizontal stringcourse that is located the hyperbola summit, its characterized in that still including cover at the tower wall surface of hyperbola cooling tower, extend 0.6-1 m's enhancement region from the stringcourse from top to bottom, it includes the high-strength concrete layer to strengthen the region, including the reinforcing bar of cross arrangement in the high-strength concrete layer. Through increase strong concrete layer and cross steel bar structure in the stringcourse region of hyperbola cooling tower, the structural strength of greatly increased waist prolongs the life-span of hyperbola cooling tower.

Description

Hyperbolic cooling tower with reinforced waist line

Technical Field

The utility model relates to a cooling tower field of thermal power plant, more specifically say, relate to a thermal power factory hyperbola cooling tower's reinforcement technique.

Background

A circulating water natural draft cooling tower of a thermal power plant and a nuclear power station is a large-scale thin shell type structure. In order to save water in a power plant installed in an area where water is not sufficiently supplied, a circulating cooling water system is constructed so that hot water discharged from a cooler is cooled therein and then reused. The cooling structures adopted by large power plants are mostly hyperbolic cooling towers.

Because the inner wall of the cooling tower is in contact with hot water for a long time, higher requirements are put forward on the structural strength of the wall of the cooling tower.

Generally, the cooling tower wall is prefabricated and formed by reinforced concrete. Because the reinforced concrete has discontinuous microcracks, and the porous reinforced concrete structure concrete is a solid, liquid and gas three-phase coexisting building material consisting of coarse aggregates, sand and cementing materials, a large number of pores and bubbles exist inside the porous reinforced concrete structure concrete, and the porous reinforced concrete structure concrete is a porous heterogeneous material essentially. The pores provide passages for the invasion of foreign matters, and carbon dioxide, sulfate and chloride ions in water and air enter the interior of the concrete through the pores to perform a degradation reaction with the concrete, so that the durability of the concrete is obviously reduced. Due to the special use function of the cooling tower, the degradation of concrete is more aggravated in the environment where the cooling tower is located, so that the structural performance of the tower wall of the cooling tower is affected, and the service life of the cooling tower is shortened.

The waistline area of the hyperbolic tower body is the weakest area of the whole cooling tower, and structural damage is easy to occur.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above shortcoming, the not enough of prior art, the utility model provides a reinforced (rfd) hyperbolic cooling tower of stringcourse can effectively compensate current cooling tower wall's reinforced concrete's structure weakness, prolongs cooling tower's life.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

the utility model provides a hyperbola cooling tower that stringcourse is strengthened, including the horizontal stringcourse that is located the hyperbola summit, its characterized in that still including cover at the tower wall surface of hyperbola cooling tower, extend 0.6-1 m's enhancement region from the stringcourse from top to bottom, it includes the high-strength concrete layer to strengthen the region, including the reinforcing bar of cross arrangement in the high-strength concrete layer.

Preferably, the crossed reinforcing bars comprise transverse reinforcing rings arranged in a direction offset from the waistline direction.

Preferably, the crossed reinforcing steel bars further comprise longitudinal reinforcing steel bars which are arranged in a manner of deviating from the hyperbolic direction.

Preferably, the surface of the crossed reinforcing steel bars comprises a plating layer resisting alkali corrosion.

Preferably, the distance between adjacent horizontal reinforcing rings or longitudinal reinforcing bars is 5-10 cm.

Preferably, the thickness of the high-strength concrete layer is at least 2 times of the total thickness of the crossed reinforcing steel bars.

Preferably, the high strength concrete structure comprises reactive micro-powder concrete or fibre reinforced concrete.

(III) advantageous effects

The technical effects of the utility model reside in that: through increasing strong concrete layer and cross steel bar structure in the stringcourse region of hyperbola cooling tower, the structural strength of greatly increased waist, the life-span of extension hyperbola cooling tower.

Drawings

FIG. 1 is a schematic longitudinal cross-sectional view of a hyperbolic cooling tower of the present invention;

FIG. 2 is a schematic structural view of a first embodiment of a steel bar of the hyperbolic cooling tower of the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the steel bar of the hyperbolic cooling tower of the present invention.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

As shown in fig. 1, the hyperbolic cooling tower of the utility model discloses a waistline enhancement, including the tower wall basic unit 1 that has the hyperbolic profile, tower wall basic unit 1 has the waistline 3 that is located the hyperbola summit, strengthens regional 2 covers at the surface of tower wall 1 of hyperbolic cooling tower, extends certain distance from waistline 3 is upper and lower, preferably upwards and respectively extend 0.6-1m from the waistline downwards.

It should be noted that the hyperbolic cooling tower of the present invention may be a newly constructed hyperbolic cooling tower or a new hyperbolic cooling tower.

Strengthen the region strengthen regional including the high-strength concrete layer, including the reinforcing bar of crossing arrangement in the high-strength concrete layer. The high-strength concrete layer comprises active micro-powder concrete or fiber reinforced concrete. The reinforcing steel bars arranged in a crossed manner are integrally embedded into the high-strength concrete layer, the thickness of the high-strength concrete layer is at least 2 times of the total thickness of the reinforcing steel bars arranged in a crossed manner, so that a reinforcing steel bar reinforcing layer and a homogeneous high-strength concrete layer are obtained in the thickness direction, and the bending strength is improved while the corrosion resistance is better. The reinforcing steel layer is preferably arranged close to the base layer of the tower wall of the hyperbolic cooling tower, and plays a role in anchoring the high-strength concrete layer on the base layer of the tower wall to a certain extent.

The arrangement of the reinforcing bars is shown in figure 2 for the sake of example only, it being understood that these reinforcing bars are sunk in the high-strength concrete layer and are not visible in normal operating conditions.

As shown in fig. 2, the reinforcing bars include transverse reinforcing rings 4 arranged to be offset from the wale direction. The tendon ring 4 completely encircles the waist of the hyperbolic cooling tower from the circumferential direction, but does not lie in a plane coincident with or parallel to the plane of the waistline 3, but at an angle a, preferably 5-10 °. This is to maximize the efficiency of resisting the bending moment experienced in the beltline zone. Meanwhile, the reinforcing steel bars form a complete ring shape, so that the anchoring effect on the high-strength concrete layer is improved. Fig. 2 shows the tendon rings divided into two intersecting directions of extension, each direction of extension comprising a set of mutually parallel tendon rings. In an alternative embodiment, the tendon rings comprise only one set of single mutually parallel directions of extension.

As shown in fig. 3, the reinforcing bars further comprise longitudinal reinforcing bars 5 arranged offset from the hyperbolic direction and intersecting a set of transverse reinforcing rings 4 parallel to each other. An included angle b exists between the plane where the plurality of longitudinal reinforcing bars 5 are located and the longitudinal center line of the tower body, and the included angle b is preferably 5-10 degrees. The reinforcing steel bars are obliquely attached to the tower body of the cooling tower in a spiral shape, the structural strength of the high-strength concrete layer is enhanced, in addition, compared with the vertical arrangement of the reinforcing steel bars, the bending moment born by a waist line resisting area can be effectively and maximally resisted, and meanwhile, the anchoring effect and the anti-cracking performance of the high-strength concrete layer are improved.

Preferably, the surfaces of the crossed reinforcing steel bars 4-5 comprise plating layers resistant to alkali corrosion.

Preferably, the distance between adjacent transverse reinforcing rings and/or longitudinal reinforcing bars is 10-25 cm.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a hyperbola cooling tower that stringcourse is strengthened, is including the horizontal stringcourse that is located the hyperbola summit, its characterized in that, still including cover at the outer wall of hyperbola cooling tower, extend 0.6-1 m's reinforcement area from the stringcourse from top to bottom, it includes the high-strength concrete layer to strengthen the area, including the reinforcing bar of cross arrangement in the high-strength concrete layer.

2. The waistline-reinforced hyperbolic cooling tower of claim 1, wherein the crosswise disposed rebars comprise transverse rebar rings disposed offset from the waistline direction.

3. The waistline-reinforced hyperbolic cooling tower of claim 2, wherein the crossed reinforcing steel bars further comprise longitudinal reinforcing bars offset from the hyperbolic direction.

4. The beltline-reinforced hyperbolic cooling tower of any one of claims 1-3, wherein the surfaces of the intersecting reinforcing bars comprise a coating resistant to caustic corrosion.

5. The waistline-reinforced hyperbolic cooling tower as recited in claim 3, wherein the spacing between adjacent transverse or longitudinal tendons is 10-25 cm.

6. The beltline-reinforced hyperbolic cooling tower of claim 1, wherein the high-strength concrete layer has a thickness at least 2 times the total thickness of the crosswise-arranged steel bars.

7. The waistline-reinforced hyperbolic cooling tower of claim 6, wherein the high-strength concrete layer comprises reactive micro-powder concrete or fiber-reinforced concrete.