CN116123919A - a 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

a cooling tower

technical field

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

Background technique

The high-level water collection cooling tower is referred to as "high-level tower" for short. It is a counter-flow natural ventilation cooling tower with a high-level water collection device and a central water collection tank. The high-level water collection device is composed of a water collection sloping plate, a splash guard, and a water collection tank arranged under the water spray filler. After collecting water, it is collected into the central water collection tank and then returned to the pump room.

In the existing high-level tower secondary circulation scheme, the most troublesome technical problem is the layout and structural design of the high-level tower water collection tank from the tower to the pump room section. According to the layout and structural scheme of the section of the existing high-level tower, the main reason is that the outlet end of the water collection tank of the high-level tower is greatly narrowed to form a concrete backwater ditch passing through the cooling tower's herringbone column, and after crossing, it is connected to the backwater ditch outside the tower for lengthening Deepen and widen, serve for process rectification and pump water absorption. However, the backwater outlet of the sump adopts a concrete backwater ditch, which bears the water pressure in the water head of the sump between 16m and 21m, and the design of the backwater ditch is in the contradiction between the process section and the structural design. On the one hand, the process requires that the flow section of the backwater ditch should be enlarged as much as possible to ensure the stability of the water flow; on the other hand, the structure of the backwater ditch needs to pass through the herringbone columns of the cooling tower, and the distance between the herringbone columns is generally not satisfactory. Requirements for the technological section; and the herringbone column is a space oblique pillar, so that in order to strive for the largest technological section in the backwater ditch, the neck needs to be narrowed, the top is small, the bottom is large, or the structure is heterogeneous, which will affect the water flow pattern; on the other hand, reinforced concrete The internal pressure of the structure is not the advantage of this type of structure, resulting in the calculated wall thickness of the backwater ditch being about 0.9 to 1.4m, and the increase in wall thickness will further affect the flow section; on the other hand, the backwater ditch outside the tower is designed to meet the high-speed water Rectification requirements after flowing out of the tower, the backwater ditch should be lengthened and deepened, and the section should be widened obliquely, and finally expanded to meet the water suction spacing requirements of several circulating pumps, so that the height of the vertical side wall of the backwater ditch outside the tower is 8m to 10m, and the top and bottom plates The structural span is 20m to 28m, and it still bears the water pressure in the water head of the sump between 16m and 21m, which makes it difficult to design the structure of the backwater ditch that can withstand internal pressure, and it is necessary to add multiple large-section columns in the middle to withstand structural deformation and internal pressure. , There are many columns and the cross section is large, which affects the process water flow, which is not good for water distribution.

Contents of the invention

Based on this, it is necessary to provide a cooling tower that improves the above-mentioned defects in view of the difficulty in the layout and structural design of the section from the water collection tank of the high-level tower to the pump room in the prior art.

A cooling tower comprising:

A tower, including a tower body and supporting a plurality of gable columns arranged at the bottom of the tower body;

A water collection tank is arranged in the tower body; and

The water outlet unit includes a backwater ditch and a water-absorbing steel pipe, the backwater ditch is arranged in the tower body, and is located below the water collection tank, and the backwater ditch is connected to the water collection tank; the water-absorbing steel pipe It has a water inlet end and a water outlet end opposite to the water inlet end, the water inlet end communicates with the backwater ditch, and the water outlet end passes out of the tower body from between two adjacent herringbone columns , and used to connect with the inlet of the suction pump.

In one of the embodiments, the backwater ditch has a first end and a second end opposite to the first end, and in the direction from the first end to the second end, the backwater ditch The width size of the gradually increases;

The second end of the return ditch has a water outlet, and the water inlet end of the water-absorbing steel pipe is connected to the water outlet.

In one of the embodiments, there are multiple water-absorbing steel pipes, and the second end of the return ditch has a plurality of water outlets corresponding to a plurality of water-absorbing steel pipes, each The water inlet end of the water-absorbing steel pipe is connected to the corresponding water outlet.

In one of the embodiments, a plurality of the water outlets are arranged at intervals along the width direction of the backwater ditch.

In one of the embodiments, the sump includes a main tank section and an end tank section connected to the end of the main tank section, and the end tank section is located above the return ditch; the end section A water outlet opening is opened at the bottom of the tank section, and a water inlet opening communicated with the water outlet opening is opened at the top of the return ditch.

In one of the embodiments, the cooling tower further includes a first support column, and the first support column is supported and arranged between the top of the backwater ditch and the end tank section.

In one embodiment, the bottom level of the end tank section is higher than the bottom level of the main body tank section, so as to form an accommodating space below the end tank section for accommodating the backwater ditch.

In one of the embodiments, the cooling tower further includes a water shower unit and a second support column arranged in the tower body, the water shower unit is located above the sump, and the second support column The support is arranged between the top of the return ditch and the shower unit.

In one of the embodiments, there are two water outlet units, and the two water outlet units are respectively arranged at the longitudinal ends of the sump, and the return ditch of each water outlet unit is connected to the The corresponding ends of the sump are connected.

In one of the embodiments, both the sump and the return ditch are reinforced concrete structures.

In the actual use of the above cooling tower, the water to be cooled enters the tower body of the cooling tower and is cooled in the tower body. The cooled water is collected in the sump, and the water in the sump enters the return ditch below it, and achieves the effect of steady flow in the return ditch. The water in the backwater ditch is exported out of the tower body through the water-absorbing steel pipe, and enters the water-absorbing pump in the pump room, and then continues to be transported downstream under the pumping action of the water-absorbing pump.

In this way, the backwater ditch is moved to the inside of the tower body, and the water-absorbing steel pipe is used to pass through between two adjacent herringbone columns to the outside of the tower body, thereby discharging the water in the backwater ditch to the pump room. On the one hand, making full use of the characteristics of water-absorbing steel pipes to withstand internal pressure and stable water flow, the space between two adjacent herringbone columns is sufficient for water-absorbing steel pipes to pass through, which solves the problem of shrinkage of the concrete backwater ditch structure passing through the herringbone columns. problems such as excessive pressure, high water flow rate, and structural settlement; on the other hand, the use of water-absorbing steel pipes directly connects the return ditch inside the tower and the suction pump outside the tower, completely canceling the construction of the return ditch outside the tower, greatly reducing the required occupancy The space outside the tower avoids various difficulties in the design and construction of the high internal water pressure backwater ditch outside the tower, and avoids the mutual interference between the construction of the towering structure of the cooling tower and the underground excavation of the backwater ditch outside the tower.

Description of drawings

Fig. 1 is the structural representation of cooling tower in an embodiment of the present invention;

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

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

FIG. 4 is a partial enlarged view of A in FIG. 1 .

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. 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. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiments.

Referring to FIG. 1 and FIG. 2 , an embodiment of the present invention provides a cooling tower, including a tower 10 , a water collection tank 20 and a water outlet unit 30 . The tower 10 includes a tower body 11 and a plurality of gable columns 13 supported on the bottom of the tower body 11 , that is to say, the tower body 11 is jointly supported by a plurality of gable columns 13 . Further, a plurality of chevron columns 13 are evenly arranged on the bottom of the tower body 11 along the circumferential direction of the tower body 11 , so as to achieve stable support for the tower body 11 .

The water collecting tank 20 is arranged in the tower body 11 and is used for collecting the cooled water. The water outlet unit 30 includes a backwater ditch 31 and a water-absorbing steel pipe 32 . The backwater ditch 31 is also arranged in the tower body 11 and is located below the sump 20 . The backwater ditch 31 communicates with the water collection tank 20, so that the water collected in the water collection tank 20 can flow into the backwater ditch 31, so that the water flow can be stabilized by the backwater ditch 31, making the flow state of the water flow more stable. The water-absorbing steel pipe 32 has a water inlet end and a water outlet end opposite to the water inlet end. The water inlet end of the water-absorbing steel pipe 32 communicates with the backwater ditch 31, and the water outlet end of the water-absorbing steel pipe 32 passes between two adjacent herringbone columns 13 to the outside of the tower body 11, and is used for connecting with the water suction pump 40 of the pump room. The inlet is connected so that the water in the backwater ditch 31 can enter the water suction pump 40 of the pump room through the water suction steel pipe 32 and be transported downstream under the pumping action of the water suction pump 40 . Further, both the water collection tank 20 and the backwater ditch 31 are reinforced concrete structures.

In the actual use of the above cooling tower, the water to be cooled enters the tower body 11 of the cooling tower and is cooled in the tower body 11 . The cooled water is collected in the water collection tank 20, and the water in the water collection tank 20 enters the return water ditch 31 below it again, and achieves the effect of steady flow in the return water ditch 31. The water in the backwater ditch 31 is led out of the tower body 11 through the water-absorbing steel pipe 32 , and enters the water-absorbing pump 40 of the pump room, and then continues to be transported downstream under the pumping action of the water-absorbing pump 40 .

In this way, the backwater ditch 31 is moved to the inside of the tower body 11, and the water-absorbing steel pipe 32 is used to pass between two adjacent herringbone columns 13 to the outside of the tower body 11, so that the water in the backwater ditch 31 The water is discharged to the pump room. On the one hand, the characteristics of the water-absorbing steel pipe 32 to withstand the internal pressure and the stable water flow are fully utilized. The space between two adjacent herringbone columns 13 is enough for the water-absorbing steel pipe 32 to pass through, and the structure of the concrete return ditch 31 is solved. Cross-section of the herringbone column 13, problems such as excessive internal pressure, high water velocity, and structural settlement; on the other hand, the water-absorbing steel pipe 32 is used to directly connect the backwater ditch 31 inside the tower and the water-absorbing pump 40 outside the tower, completely The construction of the backwater ditch outside the tower is canceled, which greatly reduces the occupied space outside the tower, avoids various difficulties in the design and construction of the high internal water pressure backwater ditch outside the tower, and avoids the construction of the towering structure of the cooling tower and the underground backwater ditch outside the tower Excavation mutual interference problem.

Generally speaking, the cooling tower of the present invention fully ensures that the cooling performance is not affected, and at the same time realizes a more reasonable water distribution and a more stable flow state; structurally, the shrinkage of the concrete return ditch structure passing through the herringbone column 13 of the cooling tower is solved Cross-section, excessive internal pressure, high water velocity, structural settlement and other problems; canceled all concrete backwater ditches outside the tower, greatly saved the floor area, optimized the layout of the plant; economically saved a lot of construction investment, and finally realized the process flow State, structural design, overall layout, economic investment win-win situation, significantly achieve the effect of energy saving and emission reduction, and have very significant social and economic benefits.

Referring to FIG. 3 and FIG. 4 , in the embodiment of the present invention, the backwater ditch 31 has a first end 311 and a second end 313 opposite to the first end 311 . Moreover, in the direction from the first end 311 to the second end 313 , the width of the backwater ditch 31 increases gradually. The second end 313 of the backwater ditch 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 the water in the backwater ditch 31 enters the water-absorbing steel pipe through the water outlet 35 of the second end 313 32, then enter the water suction pump 40 of the pump house through the water suction steel pipe 32.

In this way, the water entering the backwater ditch 31 from the sump 20 flows toward the second end 313 of the backwater ditch 31, because the width of the backwater ditch 31 gradually increases from the first end 311 to the second end 313. Large, so as to play a role in stabilizing the water flow, making the flow state of the water flow gradually stable. The water at the second end 313 of the backwater ditch 31 is delivered to the outside of the tower body 11 through the water-absorbing steel pipe 32, and then enters into the water-absorbing pump 40 of the pump room.

Further, there are multiple water-absorbing steel pipes 32 , and the second end 313 of the return ditch 31 has multiple water outlets 35 corresponding to the multiple water-absorbing steel pipes 32 one-to-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 respectively connected on the corresponding water-absorbing pump 40, so that the water in the backwater ditch 31 enters into the Each water-absorbing steel pipe 32 enters each water-absorbing pump 40 of the pump room respectively by each water-absorbing steel pipe 32 .

Optionally, the plurality of water outlets 35 are arranged at intervals along the width direction of the backwater ditch 31 . Specifically, in the embodiment shown in FIG. 3 , the second end 313 of the backwater ditch 31 has three water outlets 35 .

In the embodiment of the present invention, the water collection tank 20 includes a main tank section 21 and an end tank section 23 connected to the end of the main tank section 21 , and the end tank section 23 is located above the backwater ditch 31 . The bottom of the end groove section 23 is provided with a water outlet opening, and the top of the backwater ditch 31 is provided with a water inlet opening communicated with the water outlet opening, so that the water in the main body groove section 21 moves to the end groove section 23 and flows downward. Enter into the backwater ditch 31 through the water outlet opening and the water inlet opening. In this way, compared with the prior art that enters the backwater ditch along the horizontal direction, the water in the sump 20 enters downward into the backwater ditch 31 in this embodiment, so that the flow state of the water flow is more stable.

Further, the cooling tower also includes a first support column 50, which is supported between the top of the backwater ditch 31 and the end slot section 23, so that the end section 23 above the backwater ditch 31 Perform support fixation. In this way, on the one hand, the force exerted by the first support column 50 on the backwater ditch 31 can balance the internal water pressure on the top of the backwater ditch 31 and improve the ability of the backwater ditch 31 to bear internal water pressure; With the existence of the water ditch 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; To strengthen the effect, avoid the top span of the return ditch 31 is too large.

Further, the bottom level of the end tank section 23 is higher than the bottom level of the main body tank section 21 , so as to form an accommodating space below the end tank section 23 for accommodating the backwater ditch 31 . In this way, due to the existence of the backwater ditch 31, the side wall height of the end tank section 23 of the sump 20 is reduced, that is, the backwater ditch 31 divides the height of the side wall of the sump 20, and the backwater ditch 31 serves as the sump 20 The support base makes the water collection tank 20 more stable, and is beneficial to the design and reinforcement of the side wall structure of the water collection tank 20 at the same time.

Specifically in the embodiment, the cooling tower further includes a water shower unit (not shown in the figure) and a second support column 60 arranged in the tower body 11 . The water shower unit is located above the sump 20 , and the second support column 60 is supported between the top of the return ditch 31 and the water shower unit, that is, the water shower unit is supported by the second support column 60 . In this way, due to the existence of the backwater ditch 31 , the length of the second support column 60 is reduced, which is beneficial to the structural design of the second support column 60 .

Specifically in the embodiment, two water outlet units 30 are provided, and the two water outlet units 30 are respectively arranged at the longitudinal ends of the sump 20 , and the return ditch 31 of each water outlet unit 30 is connected to the corresponding end of the sump 20 The water collected by the main tank section 21 of the water collection tank 20 flows to the end tank sections 23 at both ends, and enters the return ditch 31 of the two water outlet units 30 through the end tank sections 23 at both ends.

Of course, in other embodiments, only one water outlet unit 30 needs to be provided when only one end of the water collection tank 20 has water outlet.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A cooling tower, characterized in that, comprising: A tower, comprising a tower body (11) and supporting a plurality of gable columns (13) arranged at the bottom of the tower body (11); A water collection tank (20), arranged in the tower body (11); and The water outlet unit (30) includes a backwater ditch (31) and a water-absorbing steel pipe (32), the backwater ditch (31) is arranged in the tower body (11), and is located at the top of the water collection tank (20) Below, the return ditch (31) communicates with the sump (20); the water-absorbing steel pipe (32) has a water inlet end and a water outlet end opposite to the water inlet end, and the water inlet end is connected to the return water The ditch (31) is connected, and the water outlet end passes out of the tower body (11) from between two adjacent chevron columns (13), and is used to connect with the inlet of the water suction pump (40). 2. The cooling tower according to claim 1, characterized in that, the return ditch (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 of the backwater ditch (31) gradually increases; The second end (313) of the backwater ditch (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). 3. The cooling tower according to claim 2, characterized in that, the number of the water-absorbing steel pipes (32) is multiple, and the second end (313) of the backwater ditch (31) has a plurality of The water-absorbing steel pipes (32) correspond to a plurality of water outlets (35) one by one, and the water inlet end of each water-absorbing steel pipe (32) is connected to the corresponding water outlet (35). 4. The cooling tower according to claim 3, characterized in that, a plurality of the water outlets (35) are arranged at intervals along the width direction of the backwater ditch (31). 5. The cooling tower according to claim 1, characterized in that, the sump (20) comprises a main body trough (21) and an end trough (23) connected to the end of the main body trough (21) ), the end tank section (23) is located above the backwater ditch (31); the bottom of the end tank section (23) is provided with a water outlet opening, and the top of the backwater ditch (31) is opened There is a water inlet opening communicated with the water outlet opening. 6. The cooling tower according to claim 5, characterized in that, the cooling tower also includes a first support column (50), and the first support column (50) is supported to be arranged on the return ditch (31) Between the top of and the end groove segment (23). 7. The cooling tower according to claim 5, characterized in that, the bottom elevation of the end slot section (23) is higher than the bottom elevation of the main body slot section (21), so that the end slot section The lower part of (23) forms an accommodating space for accommodating the backwater ditch (31). 8. The cooling tower according to claim 1, characterized in that, the cooling tower further comprises a water shower unit and a second support column (60) arranged in the tower body (11), the water shower The unit is located above the water collection tank (20), and the second support column (60) is supported and arranged between the top of the backwater ditch (31) and the water shower unit. 9. The cooling tower according to claim 1, characterized in that, the water outlet unit (30) is set to two, and the two water outlet units (30) are respectively arranged on the vertical length of the water collection tank (20). two ends, and the return ditch (31) of each water outlet unit (30) communicates with the corresponding end of the sump (20). 10. The cooling tower according to claim 1, characterized in that, both the water collection tank (20) and the return water ditch (31) are reinforced concrete structures.

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