RU2455606C2 - System for reverse cooling of cooling water - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: system has distributing pipes resting on horizontal cross pieces and provided with spray nozzles and droplet separators directed downwards. Cross pieces are equipped with support sections open from above and provided for introduction of distributing pipes. Every two support sections following one after another in longitudinal direction of cross piece are separated from each other by means of support for droplet separators. Multi-layer spraying head pieces flown over with cooling air flow are provided under cross pieces.

EFFECT: creation of system for reverse cooling of cooling water, which provides easy erection of distributing pipes, as well as considerably reduces the costs at further repair works.

6 cl, 3 dwg

Description

The invention relates to a system for re-cooling cooling water according to the features of the preamble of claim 1.

Such a system has horizontal distribution girders, loaded with a temperature of between about 20 ° C. and 60 ° C. cooling water, distribution pipes with downward-directed spray nozzles and droplet separators. The distribution pipes form, together with the separators provided above the distribution pipes and the irrigation nozzles located under the distribution pipes in the form of, for example, thin plates or gratings, a component of the back-cooling unit in a film or hybrid cooling tower, while the cooling water leaving the distribution nozzles from the distribution pipes is distributed as much as possible a thin layer on irrigation nozzles that are exposed to natural air flow or when uditelnoy ventilation via, for example, fan. The cooling water that flows from the irrigation nozzles and is re-cooled by air is collected on the bottom side of the tower and then supplied again to fulfill its cooling function. Drop separators located above the distribution pipes perform the task of separating water droplets from the upstream steam stream in order to minimize the vapor cloud at the top of the cooling tower.

The supporting frame for irrigation nozzles, distribution pipes and droplet separators is formed, as a rule, of vertical posts and horizontal crossbars. Racks and crossbars can be made of concrete, fiber reinforced plastics, in particular fiberglass reinforced plastics (GFK) or wood. Steel structures are possible. While droplet separators formed from several flat segments are located directly on the crossbars, the distribution pipes are under the crossbars. Thus, when installing the distribution pipes, it is necessary to move them using suitable lifting tools under the crossbar, and then fasten them to it using tie straps or clamps. Considering the cross-sectional dimensions of the cooling tower and holding the distribution pipes at several points of the suspension, significant labor costs are required for installation. In addition, the distribution pipes can only be installed one after the other, since they have a limited length, and therefore, multiple joints must be provided. When connecting, it is necessary to move the pipes suspended during installation also horizontally.

The irrigation nozzles made in several layers under the distribution pipes provided with spray nozzles are oriented in position using, in particular, fiberglass-reinforced plastic beams and corresponding suspension means, which are also attached to the crossbars.

If it is necessary to carry out repair work on the distribution pipes, they can be dismantled and then mounted due to irrigation nozzles only from above. To do this, they must first be temporarily fixed in order to then remove individual distribution pipes between the crossbars with the opening of individual fixations. Therefore, it is necessary to carry out the distribution pipes correspondingly short, due to which the labor costs for installation and dismantling are further increased taking into account the connections between the distribution pipes.

It is also known to thread the distribution pipes through the openings in the crossbars and to connect with each other. This means that relatively short distribution pipes are used, which accordingly must have a plurality of connection points. It also requires a lot of labor during installation and dismantling. Such crossbars are formed in most cases from concrete.

The basis of the invention is the creation of a system for re-cooling of cooling water, which provides easy installation of distribution pipes, and also significantly reduces costs during subsequent repair work.

This problem is solved according to the invention using the characteristics of paragraph 1 of the claims.

Accordingly, the crossbars are provided with support sections open from above, preferably extending over their entire width, for introducing distribution pipes. The two supporting sections following one after another in the longitudinal direction of the crossbar are separated from each other by means of a support for droplet separators.

Thus, the invention provides the possibility of introducing without problems the distribution pipes also in large quantities from above to the supporting sections. The distribution pipes can be connected when the distribution pipes are in the supporting sections. Special pipe aids are no longer required because they are lying down and not suspended.

After laying all the distribution pipes and connecting to each other, the droplet separators can be laid on supports and correctly fixed.

If it is necessary to repair the distribution pipes, it is only necessary to remove the flat segments of the droplet separators in the respective areas. After that, the distribution pipes lie loosely in the support sections open from above. Then they can simply be removed up and replaced with new distribution pipes.

According to the characteristics of claim 2, the supports form integral parts of the crossbar made in the form of a single whole. This is possible regardless of the material (concrete, fiber-reinforced plastic, wood, fiber cement, steel).

However, according to claim 3 of the claims, it is also possible that the supports are capable of being connected to crossbars. This means that the supports and crossbars are made separately and are connected detachably or inseparably with each other so that support sections arise.

In addition, according to the invention, it is preferable if, in accordance with the features of claim 4 of the claims, on the side of the support heads pocket-shaped slots extending in the longitudinal direction of the crossbar for carrier strips are provided. In accordance with this, the droplet separators are laid not directly on the supports, but on the straps passing on the side of the heads of the supports. Sockets on the side of the support heads provide flawless lateral direction of the strips. The strips for receiving the droplets can also be an integral part of the droplets themselves. At the same time, a retaining bar is applied to the droplet separator packages on the side of the head or end, which then serves to longitudinally support the droplet separators above the crossbar.

The planks can be made of plastic, in particular fiber-reinforced plastic, in particular fiberglass-reinforced plastic, wood, fiber cement or steel. The cross section is expediently made so that on both longitudinal edges of the otherwise planar slats, convex longitudinal bulges extending upward are provided on which the droplet separators are supported.

Taking into account the fact that the distribution pipes lie in the supporting sections of the crossbar, in order to reduce the distance between the spray nozzles according to claim 5, it is provided that the spray nozzles are located at a distance from the distribution pipes with vertically connected connecting pipes. The connecting pipes in this case have a length that approximately corresponds to the vertical thickness of the crossbar under the support section.

The following is a more detailed explanation of the invention by examples with reference to the accompanying drawings, which are schematically depicted:

figure 1 is a partial section of a system for re-cooling cooling water in an isometric view;

figure 2 - section of the system according to figure 1 in the plane passing near the crossbar in accordance with arrow II on an enlarged scale; and

figure 3 is a vertical section along the line III-III in the direction of arrow IIIa in figure 2.

1, reference numeral 1 denotes a system for re-cooling cooling water, which is used, in particular, in a non-depicted film or hybrid cooling tower with natural or forced ventilation.

The system 1 contains several vertical posts 2, as well as horizontal crossbars 3, 4 extending in the longitudinal and transverse directions. In this case, the crossbars 3, as also shown in FIGS. 2 and 3, are provided with support sections 5 that are open from above and extend over their entire width B for introducing distribution pipes 6 for cooling water to be re-cooled. Each two successive longitudinal sections of the crossbar 3 of the support section 5 are separated from each other by means of one support 7 for the drop separators 8 provided above the distribution pipes 8. The drop separators 8 are composed of vertically curved plastic plates and are divided into several flat segments 9. On 1, the system is shown in an exploded isometric view in which the droplet separators 8 are shown at a distance from the supports 7. The broken lines indicate that the flat segment 9 always extends from the crossbar 3 to the crossbar 3. O the pores 7 can form integral parts of the crossbar 3 made in the form of a single whole (Fig. 1) or can be connected detachably or inseparably with the crossbars 3 (Fig. 2).

As shown in more detail in FIGS. 2 and 3, on the side of the heads of the supports 7 there are provided longitudinally extending pocket 3 pockets 10 for the droplet carriers 8 of the strips 11. The strips 11 in this embodiment are made of plastic. They are made mainly in the form of flat strips and have convex bulges 12 protruding upward on the longitudinal edges, on which the ends of the flat segments 9 of the droplet separators 8 are laid.

Under the crossbars 3 there are multilayer irrigation nozzles 13, in particular made of plastic, which have a lamellar or lattice structure and lie on the support bars 14. The support bars 14 are fixed by means of suspension elements 15, for example in the form of a wire, on the crossbars 3.

The distribution pipes 6 are provided with spray nozzles 16 and trays 17 spraying cooling water over a large surface located under them. To keep the distance between the spray nozzles 16 and the irrigation nozzles 13 as small as possible, taking into account the vertical thickness D of the crossbar 3 under the supporting sections 5, the spray nozzles 16 using vertically extending connecting pipes 18 are located at a distance from the distribution pipes 6.

List of items

1. System

2. Racks

3. Crossbars

4. Crossbars

5. Support plots

6. Distribution pipes

7. Supports

8. Drop separators

9. Flat segments

10. Nests

11. Planks

12. Thickening

13. Irrigation nozzles

14. Support strips

15. Hanging elements

16. Progressive nozzles

17. Plates

18. Connecting pipes

B. Crossbar width

D. Crossbar thickness.

Claims (6)

1. A system for the reverse cooling of cooling water, which comprises distribution pipes (6) supported by horizontal bolts (3) with downward spray nozzles (16) and droplet separators (8), characterized in that the bolts (3) are provided with support sections open on top (5) for introducing the distribution pipes (6), and every two supporting sections (5) longitudinally following each other in the longitudinal direction of the crossbar (3) are separated from each other by means of the support (7) for the droplet separators (8). 2. The system according to claim 1, characterized in that the supports (7) form integral parts of the crossbar (3) made as a single whole. 3. The system according to claim 1, characterized in that the supports (7) are made with the possibility of connection with the crossbars (3). 4. The system according to any one of claims 1 to 3, characterized in that on the side of the heads of the supports (7) there are provided pocket-shaped nests (10) extending in the longitudinal direction of the crossbars (3) for the bearing strips (8) of the slats (11). 5. The system according to any one of claims 1 to 3, characterized in that the spray nozzles (16) with the help of vertically extending connecting pipes (18) are located at a distance from the distribution pipes (6). 6. The system according to claim 4, characterized in that the spray nozzles (16) by means of vertically extending connecting pipes (18) are located at a distance from the distribution pipes (6).

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