CN116123919A - Cooling tower - Google Patents

Abstract

The present invention relates to a cooling tower. The cooling tower includes: the tower comprises a tower body and a plurality of herringbone columns supported and arranged at the bottom of the tower body; the water collecting tank is arranged in the tower cylinder body; the water outlet unit comprises a water return channel and a water absorption steel pipe, the water return channel is arranged in the tower body and positioned below the water collecting tank, and the water return channel is communicated with the water collecting tank; the water absorption steel pipe is provided with a water inlet end and a water outlet end opposite to the water inlet end, the water inlet end is communicated with the water return channel, and the water outlet end penetrates out of the tower body between two adjacent herringbone posts and is used for being connected with an inlet of the water absorption pump.

Description

Cooling tower

Technical Field

The invention relates to the technical field of cooling tower water outlet, in particular to a cooling tower.

Background

The high-level water receiving cooling tower is called as a high-level tower for short, and is a countercurrent natural ventilation cooling tower with a high-level water receiving device and a central water collecting tank. The high-position water receiving device consists of a water receiving inclined plate, a splash guard, a water receiving tank and other parts which are arranged below the water spraying filler, and the water is collected into a central water collecting tank after being received, and then flows back to a pump house.

In the existing secondary circulation scheme of the high-order tower, the technical problem which has the biggest trouble always is the arrangement and structural design problem from the water collecting tank of the high-order tower to the pump room section. According to the arrangement and structural scheme of the section of the existing high-level tower, the water collecting tank outlet tower tail end of the high-level tower is mainly necked, a concrete water return channel is formed to penetrate through a cooling tower herringbone column, and the water return channel outside the high-level tower is connected to lengthen, deepen and widen after penetrating through, so that the water collecting tank outlet tower is used for process rectification and circulating water pumping. However, a concrete backwater ditch is adopted at the backwater outlet tower of the water collecting tank, the water pressure in the water head of the water collecting tank is born between 16m and 21m, and the backwater ditch design is in the contradiction between the process section and the structural design. On one hand, the flow cross section of the water return channel is required to be amplified as much as possible in the process, so that the flow state of water is ensured to be stable; on the other hand, the backwater ditch structure is required to pass through the herringbone columns of the cooling tower, and the space between the herringbone columns generally cannot meet the requirements of the process section; the herringbone column is a space diagonal column, so that in order to strive for the maximum process section, a necking structure with small top and large bottom or a different structure is needed, and the flow state of water is influenced; on the other hand, the reinforced concrete structure bears the advantage that the internal pressure is not the structure, so that the calculated wall thickness of the water return channel structure is about 0.9-1.4 m, and the wall thickness is increased to further influence the flow cross section; on the other hand, in order to meet the rectification requirement after high-speed water flows out of the tower, the water return channel is lengthened and deepened, the section is obliquely widened, and finally the water return channel is enlarged to meet the water sucking space requirement of several circulating pumps, so that the vertical side wall height of the water return channel outside the tower is 8m to 10m, the structural span of a top plate and a bottom plate is 20m to 28m, the water pressure in a water collecting tank water head is still born and is 16m to 21m, the structure of the water return channel is difficult to design when bearing internal pressure, a plurality of columns with large cross sections are required to bear structural deformation and internal pressure, the columns are more and have large cross sections, the process water flow is influenced, and the water distribution is unfavorable.

Disclosure of Invention

Based on this, it is necessary to provide a cooling tower which improves the above-mentioned drawbacks, aiming at the problem of the prior art that the arrangement and structural design of the water collection sump of the high-level tower from the tower to the pump house section is difficult.

A cooling tower, comprising:

the tower comprises a tower body and a plurality of herringbone columns supported and arranged at the bottom of the tower body;

the water collecting tank is arranged in the tower cylinder body; and

The water outlet unit comprises a water return channel and a water absorption steel pipe, wherein the water return channel is arranged in the tower cylinder body and is positioned below the water collecting tank, and the water return channel is communicated with the water collecting tank; the water absorption steel pipe is provided with a water inlet end and a water outlet end opposite to the water inlet end, the water inlet end is communicated with the water return channel, and the water outlet end penetrates out of the tower body between two adjacent herringbone columns and is used for being connected with an inlet of a water absorption pump.

In one embodiment, the water return channel has a first end and a second end opposite to the first end, and the width dimension of the water return channel gradually increases in the direction from the first end to the second end;

the second end of the water return channel is provided with a water outlet, and the water inlet end of the water absorption steel pipe is connected with the water outlet.

In one embodiment, the number of the water absorbing steel pipes is multiple, the second end of the water return channel is provided with a plurality of water outlets corresponding to the water absorbing steel pipes one by one, and the water inlet end of each water absorbing steel pipe is connected with the corresponding water outlet.

In one embodiment, the water outlets are arranged at intervals along the width direction of the water return channel.

In one embodiment, the water collection tank comprises a main tank section and an end tank section connected to the end of the main tank section, wherein the end tank section is positioned above the water return channel; the bottom of the end groove section is provided with a water outlet opening, and the top of the water return groove is provided with a water inlet opening communicated with the water outlet opening.

In one embodiment, the cooling tower further comprises a first support column support disposed between the top of the water return channel and the end trough section.

In one embodiment, the bottom elevation of the end tank section is higher than the bottom elevation of the main body tank section to form a receiving space below the end tank section for receiving the water return channel.

In one embodiment, the cooling tower further comprises a water spraying unit and a second support column, wherein the water spraying unit is arranged in the tower cylinder body and is positioned above the water collecting tank, and the second support column is supported and arranged between the top of the water return channel and the water spraying unit.

In one embodiment, the number of the water outlet units is two, the two water outlet units are respectively arranged at two longitudinal ends of the water collecting tank, and the water return groove of each water outlet unit is communicated with the corresponding end part of the water collecting tank.

In one embodiment, the water collection trough and the water return trough are both reinforced concrete structures.

According to the cooling tower, in the actual use process, water to be cooled enters the tower barrel body of the cooling tower and is cooled in the tower barrel body. The cooled water is collected in the water collecting tank, and the water in the water collecting tank enters the water return channel below the water collecting tank again, so that the steady flow effect is achieved in the water return channel. The water in the water return ditch is guided out of the tower body through the water absorption steel pipe and enters the water absorption pump of the pump house, and then is continuously conveyed to the downstream under the pumping action of the water absorption pump.

So, move the return water ditch into the inside of the tower body, and utilize the water-absorbing steel pipe to pass out of the tower body from between two adjacent herringbone columns, thus discharge the water in the return water ditch to the pump house, on one hand, fully utilize the water-absorbing steel pipe bear the characteristic that internal pressure and flow state of water flow are stable, the space between two adjacent herringbone columns is enough for the water-absorbing steel pipe to pass through, have solved the concrete return water ditch structure to pass through the shrinking cross section of herringbone column, the internal pressure is too big, the water flow velocity is high, structural settlement scheduling problem; on the other hand, the water return channel in the tower and the water suction pump outside the tower are directly connected by utilizing the water suction steel pipe, so that the construction of the water return channel outside the tower is completely canceled, the space outside the tower which is required to be occupied is greatly reduced, various difficulties in design and construction of the water return channel with high water pressure outside the tower are avoided, and the problem of mutual interference between the construction of the high-rise structure of the cooling tower and the underground excavation of the water return channel outside the tower is avoided.

Drawings

FIG. 1 is a schematic view showing a structure of a cooling tower according to an embodiment of the present invention;

FIG. 2 is a top view of the cooling tower shown in FIG. 1;

FIG. 3 is a water outlet unit of the cooling tower shown in FIG. 1;

fig. 4 is a partial enlarged view at a in fig. 1.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 and 2, a cooling tower according to an embodiment of the present invention includes a tower 10, a water collecting tank 20 and a water outlet unit 30. The tower 10 includes a tower body 11 and a plurality of herringbone posts 13 supported at the bottom of the tower body 11, that is, the tower body 11 is commonly supported by the herringbone posts 13. Further, the plurality of herringbone posts 13 are uniformly distributed at intervals at the bottom of the tower body 11 along the circumferential direction of the tower body 11, thereby realizing stable support of the tower body 11.

A water collecting tank 20 is provided in the tower body 11 for collecting water after cooling is completed. The water outlet unit 30 includes a water return channel 31 and a water absorbing steel pipe 32. The water return channel 31 is also provided in the tower body 11 and is located below the water collection tank 20. The water return groove 31 is communicated with the water collecting groove 20, so that water collected in the water collecting groove 20 can flow into the water return groove 31, and the water flow is stabilized by the water return groove 31, so that the flow state of the water flow is stable. The water absorbing steel pipe 32 has a water inlet end and a water outlet end opposite the water inlet end. The water inlet end of the water absorbing steel pipe 32 is communicated with the water return channel 31, and the water outlet end of the water absorbing steel pipe 32 penetrates out of the tower body 11 from between two adjacent herringbone posts 13 and is connected with the inlet of the water absorbing pump 40 of the pump house, so that water in the water return channel 31 can enter the water absorbing pump 40 of the pump house through the water absorbing steel pipe 32 and is conveyed downstream under the pumping action of the water absorbing pump 40. Further, the water collection tank 20 and the water return channel 31 are both of reinforced concrete structure.

In the practical use process of the cooling tower, water to be cooled enters the tower barrel body 11 of the cooling tower and is cooled in the tower barrel body 11. The cooled water is collected in the water collecting tank 20, and the water in the water collecting tank 20 enters the water return channel 31 below the water collecting tank, and the steady flow effect is achieved in the water return channel 31. The water in the water return channel 31 is guided out of the tower body 11 through the water absorbing steel pipe 32 and enters the water absorbing pump 40 of the pump house, and then is continuously conveyed downstream under the pumping action of the water absorbing pump 40.

So, the backwater groove 31 is moved to the inside of the tower body 11, and the water in the backwater groove 31 is discharged to the pump room by utilizing the water absorbing steel pipe 32 to penetrate out of the tower body 11 from between two adjacent herringbone posts 13, on one hand, the characteristics that the water absorbing steel pipe 32 bears the internal pressure and the flow state of water flow is stable are fully utilized, the space between two adjacent herringbone posts 13 is enough for the water absorbing steel pipe 32 to penetrate through, and the problems that the structure of the concrete backwater groove 31 penetrates through the reduced cross section of the herringbone posts 13, the internal pressure is overlarge, the flow speed of water flow is high, the structure is settled and the like are solved; on the other hand, the water return channel 31 in the tower and the water suction pump 40 outside the tower are directly connected by the water suction steel pipe 32, so that the construction of the water return channel outside the tower is completely canceled, the space outside the tower which is required to be occupied is greatly reduced, various difficulties in design and construction of the water return channel with high water pressure outside the tower are avoided, and the problem of mutual interference between the construction of the high-rise structure of the cooling tower and underground excavation of the water return channel outside the tower is avoided.

In general, the cooling tower fully ensures that the cooling performance is not affected, and simultaneously realizes more reasonable water distribution and more stable flow state; structurally solves the problems that a concrete backwater ditch structure penetrates through a reduced cross section of a herringbone column 13 of the cooling tower, the internal pressure is overlarge, the flow speed of water flow is high, the structure is settled and the like; all concrete backwater ditches outside the tower are eliminated, the occupied area is greatly saved, and the flat arrangement of a factory is optimized; the method saves a great amount of construction investment economically, finally realizes the conditions of flow state, structural design, total flat arrangement and multi-win economic investment, obviously achieves the effects of energy conservation and emission reduction, and has very obvious social and economic benefits.

Referring to fig. 3 and 4, in the embodiment of the invention, the water return channel 31 has a first end 311 and a second end 313 opposite to the first end 311. And, in the direction from the first end 311 to the second end 313, the width dimension of the water return channel 31 gradually increases. The second end 313 of the water return channel 31 has a water outlet 35, and the water inlet end of the water absorbing steel pipe 32 is connected to the water outlet 35, so that water in the water return channel 31 enters the water absorbing steel pipe 32 through the water outlet 35 of the second end 313 and then enters the water absorbing pump 40 of the pump house through the water absorbing steel pipe 32.

In this way, the water entering the water return channel 31 from the water collecting tank 20 flows to the second end 313 of the water return channel 31, and the width dimension of the water return channel 31 gradually increases in the direction from the first end 311 to the second end 313, so that the water flow state gradually stabilizes due to the steady flow effect on the water flow. The water at the second end 313 of the water return channel 31 is conveyed out of the tower body 11 through the water absorbing steel pipe 32, and then enters the water absorbing pump 40 of the pump house.

Further, the number of the water absorbing steel pipes 32 is plural, and the second end 313 of the water return channel 31 is provided with a plurality of water outlets 35 corresponding to the water absorbing steel pipes 32 one by one. The water inlet end of each water absorbing steel pipe 32 is connected to the corresponding water outlet 35, and the water outlet end of each water absorbing steel pipe 32 is connected to the corresponding water absorbing pump 40, so that water in the water return channel 31 enters each water absorbing steel pipe 32 through each water outlet 35, and then enters each water absorbing pump 40 of the pump house through each water absorbing steel pipe 32.

Optionally, the plurality of water outlets 35 are arranged at intervals along the width direction of the water return channel 31. In particular to the embodiment shown in fig. 3, the second end 313 of the return channel 31 has three water outlets 35.

In an embodiment of the invention, the water collection sump 20 comprises a main body sump section 21 and an end sump section 23 connected to the end of the main body sump section 21, the end sump section 23 being located above the return gutter 31. The bottom of the end groove section 23 is provided with a water outlet opening, and the top of the water return groove 31 is provided with a water inlet opening communicated with the water outlet opening, so that water in the main body groove section 21 moves towards the end groove section 23 and enters the water return groove 31 downwards through the water outlet opening and the water inlet opening. Thus, compared with the prior art that water enters the water return channel along the horizontal direction, water in the water collecting tank 20 in the embodiment enters the water return channel 31 downwards, so that the flow state of the water flow is more stable.

Further, the cooling tower further comprises a first support column 50, wherein the first support column 50 is supported and arranged between the top of the water return channel 31 and the end groove section 23, so as to support and fix the end groove section 23 above the water return channel 31. In this way, on the one hand, the acting force of the first support column 50 on the water return channel 31 can balance the internal water pressure born by the top of the water return channel 31, so as to improve the capacity of bearing the internal water pressure of the water return channel 31; on the other hand, due to the existence of the water return channel 31, the length dimension of the first support column 50 is reduced, which is beneficial to the structural design of the first support column 50; on the other hand, due to the existence of the first support column 50, the top of the water return channel 31 is reinforced, and the excessive span of the top of the water return channel 31 is avoided.

Further, the bottom elevation of the end tank section 23 is higher than the bottom elevation of the main body tank section 21 to form an accommodation space for accommodating the return water channel 31 below the end tank section 23. In this way, due to the existence of the water return groove 31, the side wall height of the end groove section 23 of the water collecting tank 20 is reduced, namely, the water return groove 31 divides the side wall height of the water collecting tank 20, and the water return groove 31 serves as a supporting base of the water collecting tank 20, so that the water collecting tank 20 is more stable, and meanwhile, the side wall structural design and reinforcement of the water collecting tank 20 are facilitated.

In particular embodiments, the cooling tower further includes a water shower unit (not shown) and a second support column 60 disposed within the tower body 11. The water spraying unit is located above the water collecting tank 20, and the second support column 60 is supported and arranged between the top of the water return channel 31 and the water spraying unit, that is, the water spraying unit is supported by the second support column 60. In this way, the length of the second support column 60 is reduced due to the water return channel 31, which is beneficial to the structural design of the second support column 60.

In the embodiment, two water outlet units 30 are provided, the two water outlet units 30 are respectively arranged at two longitudinal ends of the water collecting tank 20, and the water return channel 31 of each water outlet unit 30 is communicated with the corresponding end of the water collecting tank 20, so that water collected by the main body channel section 21 of the water collecting tank 20 flows to the end channel sections 23 at the two ends, and enters the water return channels 31 of the two water outlet units 30 respectively through the end channel sections 23 at the two ends.

Of course, in other embodiments, only one water outlet unit 30 need be provided when the water collection sump 20 has only one end from which water is discharged.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A cooling tower, comprising:

the tower comprises a tower body (11) and a plurality of herringbone columns (13) supported and arranged at the bottom of the tower body (11);

a water collecting tank (20) arranged in the tower body (11); and

The water outlet unit (30) comprises a water return channel (31) and a water absorption steel pipe (32), wherein the water return channel (31) is arranged in the tower cylinder body (11) and is positioned below the water collecting tank (20), and the water return channel (31) is communicated with the water collecting tank (20); the water absorption steel pipe (32) is provided with a water inlet end and a water outlet end opposite to the water inlet end, the water inlet end is communicated with the water return ditch (31), and the water outlet end penetrates out of the tower body (11) from between two adjacent herringbone columns (13) and is used for being connected with an inlet of the water absorption pump (40).

2. The cooling tower according to claim 1, characterized in that the water return channel (31) has a first end (311) and a second end (313) opposite to the first end (311), and in that the width dimension of the water return channel (31) increases gradually in the direction from the first end (311) to the second end (313);

the second end (313) of the water return channel (31) is provided with a water outlet (35), and the water inlet end of the water absorbing steel pipe (32) is connected to the water outlet (35).

3. The cooling tower according to claim 2, wherein the number of water absorbing steel pipes (32) is plural, the second end (313) of the water return channel (31) has a plurality of water outlets (35) in one-to-one correspondence with the plurality of water absorbing steel pipes (32), and the water inlet end of each water absorbing steel pipe (32) is connected to the corresponding water outlet (35).

4. A cooling tower according to claim 3, wherein a plurality of the water outlets (35) are arranged at intervals in the width direction of the water return channel (31).

5. The cooling tower according to claim 1, characterized in that the water collection sump (20) comprises a main sump section (21) and an end sump section (23) connected to the end of the main sump section (21), the end sump section (23) being located above the water return channel (31); the bottom of the end groove section (23) is provided with a water outlet opening, and the top of the water return groove (31) is provided with a water inlet opening communicated with the water outlet opening.

6. The cooling tower according to claim 5, further comprising a first support column (50), the first support column (50) being supportingly arranged between the top of the water return channel (31) and the end tank section (23).

7. The cooling tower according to claim 5, characterized in that the bottom elevation of the end tank section (23) is higher than the bottom elevation of the main body tank section (21) to form a receiving space for receiving the water return channel (31) below the end tank section (23).

8. The cooling tower according to claim 1, further comprising a water spraying unit and a second support column (60) arranged in the tower body (11), wherein the water spraying unit is located above the water collecting tank (20), and the second support column (60) is supported and arranged between the top of the water return channel (31) and the water spraying unit.

9. The cooling tower according to claim 1, wherein two water outlet units (30) are provided, the two water outlet units (30) are respectively provided at both longitudinal ends of the water collecting tank (20), and the water return groove (31) of each water outlet unit (30) communicates with the corresponding end of the water collecting tank (20).

10. Cooling tower according to claim 1, characterized in that the water collection trough (20) and the water return trough (31) are both of reinforced concrete construction.

Images