Anti-freezing potential energy recovery cooling tower

Abstract

The anti-freezing potential energy recovery cooling tower comprises a tower body and a cooling pipeline, the tower body comprises an air inlet, an air outlet, a water inlet pipeline and a bottom water tank, a heat exchange space is formed in the tower body, the air inlet and the air outlet communicate with the heat exchange space, one end of the water inlet pipeline communicates with the heat exchange space, and the other end of the water inlet pipeline communicates with an external pipeline; the heat exchange space is communicated with the bottom water tank and is used for cooling water entering from the water inlet pipeline by air entering from the air inlet; the cooling pipeline is connected to the water inlet pipeline, the first spraying opening facing the air inlet is formed in the cooling pipeline and used for adjusting the temperature of air entering from the air inlet, and the cooling tower can reduce the freezing condition generated in winter.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooling towers, and more particularly, to an anti-freezing potential energy recovery cooling tower. Background Art

[0002] When a conventional mechanical draft cooling tower recovers the potential energy of water in a rain area, it usually sets a high-level water collection device and a collecting water tank below the packing of the cooling tower to recover the potential energy of the water. However, when the temperature is relatively low in winter, the cold air blown into the cooling tower through the air inlet is likely to freeze the high-level water collection device, the collecting water tank, and the packing area (i.e., the heat exchange space inside the cooling tower). Therefore, how to reduce the freezing risk of the cooling tower in winter is an extremely important research topic. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide an anti-freezing potential energy recovery cooling tower, which can reduce the freezing condition of the cooling tower in winter to at least partially solve the above technical problems.

[0004] To achieve the above purpose, the present disclosure provides an anti-freezing potential energy recovery cooling tower, including a tower body including an air inlet, an air outlet, a water inlet pipe, and a bottom water tank. A heat exchange space is provided inside the tower body. The air inlet and the air outlet are respectively communicated with the heat exchange space. One end of the water inlet pipe is communicated with the heat exchange space, and the other end is used for communicating with an external pipeline. The heat exchange space is communicated with the bottom water tank. The heat exchange space is used for cooling the water entering from the water inlet pipe by the air entering from the air inlet; and a cooling pipeline connected to the water inlet pipe, and a first spray port facing the air inlet is provided on the cooling pipeline for adjusting the temperature of the air entering from the air inlet.

[0005] Optionally, the cooling pipeline includes a first pipe body and a second pipe body. One end of the first pipe body is connected to the water inlet pipe, and the other end extends in the direction of the air inlet. The number of the second pipe bodies is multiple and they are respectively connected to the first pipe body, and the first spray port is provided on each of the second pipe bodies.

[0006] Optionally, the cooling pipeline further includes a third pipe body connected to the first pipe body. The tower body further includes a collecting water tank located between the heat exchange space and the cooling pipeline, and a second spray port facing the collecting water tank is provided on the third pipe body.

[0007] Optionally, atomizing nozzles are connected to both the first spray port and the second spray port.

[0008] Optionally, the first pipe body extends obliquely downward from the water inlet pipe towards the air inlet.

[0009] Optionally, the cooling pipeline further includes a stop valve connected to the first pipe body.

[0010] Optionally, the stop valve is configured as a solenoid valve, and a temperature sensor signal - connected to the solenoid valve is provided at the air inlet. The temperature sensor is used to monitor the temperature at the air inlet to control the opening or closing of the solenoid valve.

[0011] Optionally, the cooling pipeline further includes an emptying pipe connected to the first pipe body or the second pipe body.

[0012] Optionally, the pipe diameter of the emptying pipe is smaller than that of the first pipe body and the second pipe body.

[0013] Optionally, the number of the tower bodies is multiple. Among them, the water inlet pipe of at least one tower body is connected with a plurality of cooling pipelines, and the plurality of cooling pipelines extend towards different tower bodies respectively, so as to adjust the temperature of the air entering from the air inlets of different tower bodies.

[0014] Through the above - mentioned technical solution, that is, the anti - freezing potential energy recovery cooling tower provided by the present disclosure, when the temperature is relatively low in winter and the wind from the external environment blows in from the air inlet, the first spray nozzle on the cooling pipeline facing the air inlet will spray water on the wind blowing in from the air inlet. And the other end of the cooling pipeline is connected to the water inlet pipe, and the water flowing inside the water inlet pipe is the relatively high - temperature water that is about to enter the tower body for cooling. It is equivalent to leading out a bypass from the water inlet pipe, that is, connecting the water inlet pipe with the cooling pipeline, and spraying a part of the relatively high - temperature water through the cooling pipeline from the first spray nozzle to the air inlet of the tower body, so that the water and the wind can exchange heat and increase the temperature of the wind blowing in from the air inlet. Furthermore, it can prevent the situation that when the temperature is relatively low in winter, the temperature of the wind blowing in from the air inlet is too low and freezes the tower body.

[0015] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0017] Figure 1 is a schematic diagram of the anti - freezing potential energy recovery cooling tower and part of its internal structure provided in the exemplary embodiment of the present disclosure;

[0018] Figure 2 is Figure 1 a partial enlarged view of position A in

[0019] DESCRIPTION OF THE REFERENCE NUMERALS

[0020] 1 - Tower body; 110 - Air inlet; 120 - Air outlet; 130 - Water inlet pipe; 140 - Bottom water tank; 150 - Heat exchange space; 160 - Water collection tank; 170 - Fan; 2 - Cooling pipeline; 201 - First spray nozzle; 202 - Second spray nozzle; 203 - Atomizing nozzle; 210 - First pipe body; 220 - Second pipe body; 230 - Third pipe body; 240 - Stop valve; 250 - Drain pipe. Specific embodiments

[0021] The following will describe the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present disclosure, and are not intended to limit the present disclosure.

[0022] In the present disclosure, unless otherwise stated, the orientation terms such as "inside, outside" refer to the inside and outside relative to the contour of the structure or component itself; "first, second" etc. are used to distinguish one element from another, without sequence and importance. In addition, the same reference numerals in different drawings represent the same elements, and repeated reference numerals in a single drawing also represent the same elements. In Figure 1 the arrow X indicates the wind direction when the external wind blows into the tower body 1 through the air inlet 110, and the arrow Y indicates the wind direction inside the tower body 1.

[0023] The present disclosure provides an anti-freezing potential energy recovery cooling tower. Referring to Figure 1 and Figure 2 as shown, the anti-freezing potential energy recovery cooling tower includes a tower body 1 and a cooling pipeline 2. The tower body 1 includes an air inlet 110, an air outlet 120, a water inlet pipe 130 and a bottom water tank 140. A heat exchange space 150 is provided inside the tower body 1. The air inlet 110 and the air outlet 120 are respectively communicated with the heat exchange space 150. One end of the water inlet pipe 130 is communicated with the heat exchange space 150, and the other end is used to be communicated with an external pipeline. The heat exchange space 150 is communicated with the bottom water tank 140. The heat exchange space 150 is used for the wind entering from the air inlet 110 to cool the water entering from the water inlet pipe 130; the cooling pipeline 2 is connected to the water inlet pipe 130, and a first spray nozzle 201 facing the air inlet 110 is provided on the cooling pipeline 2 to adjust the temperature of the wind entering from the air inlet 110.

[0024] In the above manner, that is, the anti-freezing potential energy recovery cooling tower provided by the present disclosure, when the wind in the external environment blows in from the air inlet 110 in the case of low winter temperature, the first spray port 201 on the cooling pipeline 2 facing the air inlet 110 will spray water on the wind blowing in from the air inlet 110, and the other end of the cooling pipeline 2 is connected to the water inlet pipeline 130. The water flowing inside the water inlet pipeline 130 is the relatively high-temperature water that is about to enter the tower body 1 for cooling. It is equivalent to leading out a bypass from the water inlet pipeline 130, that is, connecting the water inlet pipeline 130 to the cooling pipeline 2, and spraying a part of the relatively high-temperature water from the first spray port 201 to the air inlet 110 of the tower body 1 through the cooling pipeline 2, so as to enable the water and the wind to exchange heat and increase the temperature of the wind blowing in from the air inlet 110, thereby preventing the situation that the tower body 1 freezes due to the relatively low temperature of the wind blowing in from the air inlet 110 in the case of low winter temperature of the cooling tower.

[0025] It should be noted that the cooling tower mentioned in the above manner is usually a mechanical draft cooling tower. Refer to Figure 1 and Figure 2 As shown, in this cooling tower, generally the flow direction of the wind is guided by the fan 170, that is, Figure 1 As shown, after the wind enters the tower body 1 through the air inlet 110 along the arrow X direction, it will move upward under the influence of the fan 170, that is, move along the arrow Y direction. During the process of the wind moving along the Y direction, the wind will pass through the heat exchange space 150 from the bottom to the top of the tower body 1, and one end of the water inlet pipeline 130 is connected to the external pipeline, and the other end is connected to the heat exchange space 150. After the water enters the tower body 1 from the water inlet pipeline 130, it will also enter the heat exchange space 150 and exchange heat with the wind flowing through the heat exchange space 150, that is, the cooling method of cooling water by wind commonly used in related cooling towers. The heat exchange space 150 can be the packing area widely used in the tower body 1 of the existing cooling tower. The cooled water will drip from the bottom of the heat exchange space 150 into the bottom water tank 140, and then continue to be transported to other equipment that requires water as a power source, such as a hydraulic generator, a condenser or a steam turbine unit, for continuous circulation, and the wind will be discharged from the air outlet 120 under the operation of the fan 170.

[0026] In some embodiments, refer to Figure 1 and Figure 2As shown, the cooling pipeline 2 includes a first pipe body 210 and a second pipe body 220. One end of the first pipe body 210 is connected to the water inlet pipeline 130, and the other end extends towards the air inlet 110. The number of the second pipe bodies 220 is multiple and they are respectively connected to the first pipe body 210. Each second pipe body 220 is provided with a first spray port 201. In this way, the first pipe body 210 can be used to mainly convey the water from the water inlet pipeline 130, and the first pipe body 210 can also distribute the water from the water inlet pipeline 130 to multiple second pipe bodies 220 and spray it out through multiple first spray ports 201. Multiple spray ports 201 jointly spray water on the air inlet 110, which can increase the contact area between the water and the air blowing through the air inlet 110, and further improve the heat exchange efficiency between the water and the air.

[0027] Among them, the number of the second pipe bodies 220 can be any appropriate number. For example, referring to Figure 2 As shown, in the present disclosure, the number of the second pipe bodies 220 is two and they are connected to the first pipe body 210 at intervals, and a suitable distance can be maintained between the two second pipe bodies 220, such as in the range of 0.5 to 2 meters, as long as the spraying range can cover the air inlet 110. In addition, the number of the second pipe bodies 220 can also be three, four or more, and the present disclosure does not make specific limitations on this.

[0028] In some embodiments, referring to Figure 1 and Figure 2 As shown, the cooling pipeline 2 further includes a third pipe body 230 connected to the first pipe body 210. The tower body 1 further includes a water collection tank 160 located between the heat exchange space 150 and the cooling pipeline 2. The third pipe body 230 is provided with a second spray port 202 facing the water collection tank 160. In this way, the third pipe body 230 can spray water on the water collection tank 160 in the tower body 1 for anti-freezing. That is, in the mechanical draft cooling tower mentioned in the above method, a water collection tank 160 is usually equipped to recover the potential energy of the water cooled through the heat exchange space 150. The rear end of the water collection tank 160 can be used to connect equipment such as a hydraulic generator in the steam turbine unit. The water entering the water collection tank 160 can enter the hydraulic generator for power generation and reuse. In order to prevent the occurrence of ice formation in the water collection tank 160 in the tower body 1 due to low winter temperature, a third pipe body 230 facing the water collection tank 160 can be led out from the first pipe body 210 to use the relatively warm water from the water inlet pipeline 130 to exchange heat or thaw the water in the water collection tank 160. When the water flows through the third pipe body 230, it can be sprayed out through the second spray port 202 and sprayed into the water collection tank 160 to reduce or even avoid the situation of the water collection tank 160 being frozen.

[0029] In some embodiments, referring to Figure 1 and Figure 2As shown, both the first spray nozzle 201 and the second spray nozzle 202 are connected with atomizing nozzles 203. In this way, when the water flows out, the atomizing nozzles 203 can generate uniform water mist, thereby forming a larger coverage spraying area, so as to increase the contact surface with the air at the air inlet 110 and also increase the contact surface with the water in the water collection tank 160. Moreover, the atomizing nozzles 203 can atomize the water about to be sprayed out in the second pipe body 220 and the third pipe body 230 into fine water droplets, and can also improve the water-saving efficiency.

[0030] In some embodiments, referring to Figure 1 and Figure 2 As shown, the first pipe body 210 extends obliquely downward from the water inlet pipe 130 towards the air inlet 110. In this way, the inclined first pipe body 210 can make the water entering from the water inlet pipe 130 flow towards the air inlet 110 faster, so as to be able to discharge the water that exchanges heat with the air at the air inlet 110 more quickly. That is to say, in the Figure 1 embodiment shown, the first pipe body 210 has an inclined angle downward compared with the horizontal direction of the tower body 1, and the inclined angle is generally one-thousandth of a degree of a small slope, which can satisfy the water in the first pipe body 210 to flow from the water inlet pipe 130 towards the air inlet 110.

[0031] In some embodiments, referring to Figure 1 and Figure 2 As shown, the cooling pipeline 2 further includes a stop valve 240 connected to the first pipe body 210. In this way, the stop valve 240 can allow or cut off the water flow from the water inlet pipe 130 to the first spray nozzle 201 and the second spray nozzle 202. That is to say, when the air temperature at the air inlet 110 is lower than the preset temperature (for example, 0°C), the stop valve 240 can be opened to allow the water from the water inlet pipe 130 to exchange heat with the air at the air inlet 110 and increase the air temperature. When the air temperature is higher than the preset temperature (for example, 0°C) and anti-freezing measures are not required inside the tower body 1, the stop valve 240 can be closed to block the water from the water inlet pipe 130 from exchanging heat with the air at the air inlet 110, so as to reduce or even avoid wasting resources.

[0032] In some embodiments, referring to Figure 1 and Figure 2As shown, the globe valve 240 is configured as a solenoid valve, and a temperature sensor (not shown in the figure) signal-connected to the solenoid valve is provided at the air inlet 110. The temperature sensor is used to monitor the temperature at the air inlet 110 to control the opening or closing of the solenoid valve. In this way, the temperature sensor can monitor the air temperature at the air inlet 110 in real time. When the air temperature at the air inlet 110 is lower than the above preset temperature (for example, 0 °C), it can transmit a signal to the solenoid valve, and the solenoid valve opens. At this time, the water from the water inlet pipe 130 is allowed to exchange heat with the air at the air inlet 110 and increase the temperature of the air. When the air temperature at the air inlet 110 is higher than the above preset temperature, a signal can also be transmitted to the solenoid valve again, and the solenoid valve closes. At this time, the water from the water inlet pipe 130 is blocked from exchanging heat with the air at the air inlet 110, so as to achieve the effect of intelligent control. Among them, the connection method between the temperature sensor and the solenoid valve can be wired connection or wireless connection. Among them, the wired connection can adopt, for example, the way of PLC control, and the wireless connection can adopt any suitable way such as NFC intelligent control. The present disclosure does not make specific limitations on this.

[0033] In some embodiments, referring to Figure 1 and Figure 2 As shown, the cooling pipeline 2 further includes a drain pipe 250 connected to the first pipe body 210 or the second pipe body 220. In this way, the drain pipe 250 can be connected to the lowest part of the first pipe body 210 or the second pipe body 220. Furthermore, when the cooling pipeline 2 does not exchange heat with the air at the air inlet 110 inside, all the residual water in the pipes can be discharged in time. The purpose of setting the drain pipe 250 is also to discharge the residual water in time through the drain pipe 250 when a part of the first spray nozzles 201 and the second spray nozzles 202 are not at the lowest part of the cooling pipeline 2 and there is residual water. That is, referring to Figure 2 As shown, one end of the drain pipe 250 can be connected to the lowest part of the second pipe body 220. In this way, when the globe valve 240 is closed, due to the slope of the first pipe body 210 itself, the water in the first pipe body 210 will gradually flow towards the second pipe body 220, and the drain pipe 250 can discharge all the residual water in the second pipe body 220 to prevent the cooling pipeline 2 itself from freezing due to the cold air when the residual water remains in the first pipe body 210 or the second pipe body 220.

[0034] In some embodiments, referring to Figure 1 and Figure 2As shown, the pipe diameters of the drain pipes 250 are all smaller than those of the first pipe body 210 and the second pipe body 220. In this way, when there is flowing water in the first pipe body 210 and the second pipe body 220, the drain pipes 250 are always in a drainage state. Setting the drain pipes 250 to have a smaller pipe diameter than the first pipe body 210 and the second pipe body 220 can minimize the occurrence of wasted water.

[0035] In some embodiments, referring to Figure 1 and Figure 2 as shown, the number of tower bodies 1 is multiple. Among them, the water inlet pipes 130 of at least one tower body 1 are connected with multiple cooling pipelines 2, and the multiple cooling pipelines 2 extend towards different tower bodies 1 respectively to adjust the temperature of the air at the air inlets of different tower bodies 1. In this way, when the air temperatures at the air inlets 110 of multiple tower bodies 1 all need to be adjusted, multiple cooling pipelines 2 can be simultaneously connected to the water inlet pipes 130 of one or more of the tower bodies 1, and the air temperatures at the air inlets 110 of multiple tower bodies 1 can be adjusted simultaneously through the multiple cooling pipelines 2, rather than connecting cooling pipelines 2 to all the tower bodies 1. In this way, the labor intensity of the staff for reconstructing and constructing the cooling pipelines 2 among multiple tower bodies 1 can be reduced, and thus the labor force during the reconstruction process can be reduced. Among them, Figure 1 exemplarily describes the arrangement mode where two tower bodies 1 are adjacent. In this arrangement mode, two cooling pipelines 2 can be simultaneously connected to the water inlet pipe 130 of one of the tower bodies 1, and the air at the air inlets of the two tower bodies 1 can be heated simultaneously. Or, more cooling pipelines 2 can also be connected to the same water inlet pipe 130, such as three, four or more. The present disclosure does not make specific limitations on this.

[0036] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0037] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination modes.

[0038] In addition, any combination can be made among various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. An anti-freezing potential energy recovery cooling tower, characterized in that, Comprising: A tower body, including an air inlet, an air outlet, a water inlet pipe, and a bottom water tank. A heat exchange space is provided inside the tower body. The air inlet and the air outlet are respectively communicated with the heat exchange space. One end of the water inlet pipe is communicated with the heat exchange space, and the other end is used for being communicated with an external pipeline. The heat exchange space is communicated with the bottom water tank. The heat exchange space is used for cooling the water entering from the water inlet pipe by the air entering from the air inlet; and A cooling pipeline, connected to the water inlet pipe, and a first spray port facing the air inlet is provided on the cooling pipeline for adjusting the temperature of the air entering from the air inlet.

2. The anti-freezing potential energy recovery cooling tower according to claim 1, wherein The cooling pipeline includes a first pipe body and a second pipe body. One end of the first pipe body is connected to the water inlet pipe, and the other end extends in the direction of the air inlet. The number of the second pipe bodies is multiple and they are respectively connected to the first pipe body. Each of the second pipe bodies is provided with the first spray port.

3. The anti-freezing potential energy recovery cooling tower according to claim 2, wherein The cooling pipeline further includes a third pipe body connected to the first pipe body. The tower body further includes a water collection tank located between the heat exchange space and the cooling pipeline. A second spray port facing the water collection tank is provided on the third pipe body.

4. The anti-freezing potential energy recovery cooling tower according to claim 3, characterized in that, Both the first spray port and the second spray port are connected with atomizing nozzles.

5. The anti-freezing potential energy recovery cooling tower according to claim 2, wherein The first pipe body extends obliquely downward from the water inlet pipe towards the air inlet.

6. The anti-freezing potential energy recovery cooling tower according to claim 2, characterized in that, The cooling pipeline further includes a stop valve connected to the first pipe body.

7. The anti-freezing potential energy recovery cooling tower according to claim 6, wherein The stop valve is configured as an electromagnetic valve. A temperature sensor signal-connected to the electromagnetic valve is provided at the air inlet. The temperature sensor is used for monitoring the temperature at the air inlet to control the opening or closing of the electromagnetic valve.

8. The anti-freezing potential energy recovery cooling tower according to claim 2, wherein The cooling pipeline further includes a drain pipe connected to the first pipe body or the second pipe body.

9. The anti-freezing potential energy recovery cooling tower according to claim 8, characterized in that, The pipe diameter of the drain pipe is smaller than the pipe diameters of the first pipe body and the second pipe body.

10. The anti-freezing potential energy recovery cooling tower according to claim 1, wherein The number of the tower bodies is multiple. Among them, the water inlet pipes of at least one tower body are connected with multiple cooling pipelines, and the multiple cooling pipelines respectively extend towards different tower bodies for adjusting the temperatures of the air entering the air inlets of different tower bodies.

Images