A high-efficiency cooling tower for air conditioning and water distribution method thereof

Abstract

The invention discloses a high-efficiency cooling tower for air conditioning, comprising: a tower body, an anemometer, an exhaust pipe, an adjusting component, a controller, and a water supply component. The anemometer is arranged on the exhaust pipe, and a receiving end of the controller is electrically connected to the anemometer. The anemometer monitors wind direction and wind speed information and sends it to the controller. The controller controls the opening of the adjusting component in different directions to cool the water temperature of flowing water in the water supply component. Through a specific algorithm and a water distribution method, the wind volume and direction of the side wind at the actual arrangement position of the cooling tower are measured in real time, so that the opening of the adjusting component on the water supply branch pipe can be adjusted in real time, and the water distribution volume on both sides of the water distribution system can be adjusted in real time, thereby strengthening the heat and mass transfer in the filling area of ​​the cooling tower on the windward side, having a positive impact on the high-efficiency and energy-saving operation of the chiller, and changing the deviation of the air-water ratio on both sides of the cooling tower caused by the influence of the side wind.

Description

Technical Field

[0001] The invention relates to a high-efficiency cooling tower for air conditioning and a water distribution method thereof. Background Art

[0002] Forced ventilation cross-flow cooling towers are widely used for cooling cooling water in central air-conditioning systems. Their cooling performance directly affects the safe, economical and efficient operation of chillers. The complex heat and mass transfer between the air-water phases in cross-flow cooling towers is easily affected by ambient air temperature, humidity, wind speed and wind direction. Ambient side winds can cause uneven wind speed distribution on the air inlet surfaces on both sides of the cooling tower, resulting in deviation of the air-water ratio on both sides from the design value, weakening the heat and mass transfer in the packing area of ​​the cooling tower on the leeward side, and having an adverse effect on the efficient and energy-saving operation of the chiller. Once the wind direction changes, it is difficult to balance the air-water phases, and during the water cooling process, some humid and hot gases will flow out from the air outlet, carrying some water vapor to the external environment, affecting the surrounding environment and people. Summary of the invention

[0003] The present invention provides a high-efficiency cooling tower for air conditioning and a water distribution method thereof, which can effectively solve the above problems.

[0004] The present invention is achieved in that:

[0005] A high-efficiency cooling tower for air conditioning comprises: a tower body, an anemometer, an exhaust pipe, an adjusting member, a controller, and a water supply assembly. The anemometer is arranged on the exhaust pipe, and a receiving end of the controller is electrically connected to the anemometer.

[0006] The wind speed and wind direction meter monitors the wind direction and wind speed information and sends it to the controller, and the controller controls the opening of the regulating member in different directions to cool the water temperature of the flowing water in the water supply component.

[0007] The exhaust pipe includes a water blocking platform and an exhaust fan. The water blocking platform includes a wire cover. A water absorption ring cover and a water absorption ring platform are fixed on the wire cover. The water absorption ring cover and the water absorption ring platform are used to absorb moisture in the hot air sucked to the outside by the exhaust fan. A water guide channel is arranged at the bottom of the water absorption ring platform.

[0008] As a further improvement, the water supply assembly includes a water supply main, the water outlet of the water supply main is connected to a plurality of water supply branches, the flow channel of the water supply branch is provided with an adjusting member, the water outlet of the water supply branch is provided with a water distribution channel, and the adjusting member is used to configure the supply amount of the water supply main to each of the water distribution channels.

[0009] As a further improvement, the invention further includes a return water main pipe, which is communicated with a return water branch pipe of the tower body. The return water branch pipe is used to collect water flow from the water distribution channel. The return water branch pipe is also connected to the water guide channel of the exhaust pipe to guide the water recovered by the water suction ring cover and the water suction ring platform into the return water main pipe.

[0010] As a further improvement, the installation height of the anemometer and wind direction instrument is higher than the installation height of the exhaust chimney.

[0011] As a further improvement, the water distribution channel is provided with a plurality of layout openings, and a plurality of valves are correspondingly provided on the layout openings, and the plurality of valves are connected in parallel with the regulating member.

[0012] As a further improvement, vertically arranged air inlet windows are provided on the outer wall of the tower body, a plurality of guide blades are provided in the air inlet windows, a guide motor is movably provided on each of the blades, and the guide motor is electrically connected to the controller.

[0013] As a further improvement, vertically arranged air inlet windows are provided on the outer wall of the tower body, a plurality of guide blades are provided in the air inlet windows, a guide motor is movably provided on each of the blades, and the guide motor is electrically connected to the controller.

[0014] A water distribution method for a high-efficiency air-conditioning cooling tower comprises the following steps:

[0015] S1: Set up a tester on the cooling tower to collect wind speed information V and wind direction information α outside the cooling tower.

[0016] S2; the collected wind speed information V, wind direction information α is transmitted to the control system, the information taken is analyzed and calculated, and the opening φ of the regulating component is obtained,

[0017] S3; adjusting and controlling the water supply line of the cooling tower by the regulating component, adjusting the water distribution around the cooling tower according to the opening φ of the regulating component,

[0018] S4; the control system analyzes the temperature of the cooling tower return pipe and fine-tunes the regulating component according to the water temperature.

[0019] S5; repeat steps 1-4, obtain wind speed information V and wind direction information α in real time, and adjust the opening φ of the regulating component in real time.

[0020] As a further improvement, in step S2, the opening φ of the regulating component is calculated as follows:

[0021] Among them, V max is the maximum wind speed in history for that month.

[0022] The beneficial effects of the present invention are:

[0023] The present invention uses a specific algorithm and water distribution method to measure the wind volume and wind direction of the side wind at the actual layout position of the cooling tower in real time, so that the opening of the regulating part on the water supply branch pipe can be adjusted in real time, and the water distribution volume on both sides of the water distribution system can be adjusted in real time, thereby strengthening the heat and mass transfer in the filling area of ​​the cooling tower on the windward side, having a positive impact on the efficient and energy-saving operation of the chiller, and changing the deviation of the air-water ratio on both sides of the cooling tower caused by the influence of the side wind.

[0024] The water blocking platform provided in the present invention can absorb and reuse the moisture in the humid and hot gas discharged from the tower body through the cooperation of the water absorption ring cover and the water absorption ring platform, so as to reduce the water vapor content in the gas discharged outside. On the one hand, it can reduce water loss and improve the recycling and reuse of water; on the other hand, it can prevent water vapor from overflowing during the cooling process and affecting the environment around the cooling tower.

[0025] The present invention arranges air inlet windows and guide blades, which cooperate with a controller to adjust the direction of the guide blades according to the wind direction, so that the contact area between the guide blades facing the wind direction and the wind is always minimized, thereby reducing wind resistance and allowing the wind to better carry away heat vapor in the water.

[0026] The present invention provides a separate valve on each layout opening. When the wind force is small or relatively uneven, only the layout openings on one side or in a certain direction can be opened, thereby improving the application of wind force while reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 The present invention provides a schematic structural diagram of a high-efficiency cooling tower for air conditioning.

[0029] Figure 2 It is a schematic structural diagram of the inner side of a water blocking platform provided by an embodiment of the present invention.

[0030] Figure 3 It is a schematic diagram of the structure of a water supply component from a top view according to an embodiment of the present invention.

[0031] Figure 4 The present invention provides a logic flow chart of a water distribution method for a high-efficiency cooling tower for air conditioning.

[0032] In the figure: 1; tower body, 11; air inlet window, 12; guide blades,

[0033] 2. Wind speed and direction instrument,

[0034] 3; exhaust pipe, 31; water blocking platform, 32; exhaust fan,

[0035] 311; wire cover, 312; water absorption ring cover, 313; water absorption ring platform, 314; water guide channel,

[0036] 4. Adjustment parts,

[0037] 5. Controller,

[0038] 6; water supply components, 61; water supply main, 62; water supply branch pipe, 63; water distribution channel,

[0039] 631; layout port, 632; valve,

[0040] 7; Return water main. DETAILED DESCRIPTION

[0041] In order to make the embodiments of the present invention, all belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0042] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as referring to the purpose, technical solutions and advantages of the methods. To be more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work indicate or imply relative importance or implicitly indicate the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] Reference Figure 1-4As shown, a high-efficiency cooling tower for air conditioning comprises: a tower body 1, an anemometer 2, an exhaust pipe 3, an adjusting member 4, a controller 5, and a water supply assembly 6. The anemometer 2 is arranged on the exhaust pipe 3, and the receiving end of the controller 5 is electrically connected to the anemometer 2. The anemometer 2 monitors the wind direction and wind speed information and sends it to the controller 5. The controller 5 controls the opening of the adjusting member 4 in different directions to cool the water temperature of the flowing water in the water supply assembly 6. The wind direction and wind speed detected in real time can be transmitted to the controller 5. After analysis by the controller 5, the adjusting member 4 in the corresponding wind direction is adjusted. Preferably, the adjusting member 4 can be an electric regulating valve, and can also be other regulating mechanisms in other embodiments. After the adjusting member 4 adjusts the corresponding opening, the water distribution amount of the filling area on both sides of the cooling tower is adjusted, and the deviation of the air-water ratio on both sides of the cooling tower caused by the side wind is changed, so that the water flow sprayed from the water supply assembly 6 is subjected to the best wind cooling effect, the temperature of the water flow is reduced, and the deviation of the air-water ratio on both sides of the cooling tower caused by the side wind is changed.

[0044] Specifically, the exhaust chimney 3 includes a water blocking platform 31 and an exhaust fan 32, the water blocking platform 31 includes a wire cover 311, a water absorption ring cover 312 and a water absorption ring platform 313 are fixed on the wire cover 311, the water absorption ring cover 312 and the water absorption ring platform 313 are used to absorb moisture in the hot air sucked to the outside by the exhaust fan 32, and a water guide channel 314 is provided at the bottom of the water absorption ring platform 313. The wire cover 311 can provide a fixing medium for the water absorption ring cover 312 and the water absorption ring platform 313 to prevent the two from falling, and the wire cover 311 itself has a large gap, which will not block the circulation of the humid and hot air flow. The water absorption ring cover is an arch structure, and the water absorption ring platform 313 is a truncated cone structure, which is consistent with the flow direction of the airflow and completely contains the gas column, so that the airflow can fully contact the water absorption ring cover 312 and the water absorption ring platform 313, and most of the water vapor therein is absorbed. The absorbed water vapor will be affected by gravity and gradually flow downward and flow out along the water guide channel 314, achieving the effect of recycling water flow, which can not only prevent a large amount of water vapor from being sprayed out uselessly, but also can recycle and reuse the heat dissipation water flow.

[0045] Furthermore, the water supply assembly 6 includes a water supply main pipe 61, the water outlet of the water supply main pipe 61 is connected to a plurality of water supply branch pipes 62, the flow channel of the water supply branch pipe 62 is provided with an adjusting member 4, the water outlet of the water supply branch pipe 62 is provided with a water distribution channel 63, the adjusting member 4 is used to configure the supply amount of the water supply main pipe 61 to each of the water distribution channels 63, and the corresponding direction of the number of water supply branch pipes 62 and the direction of the number of adjusting members 4 can be set according to the actual local wind direction, which is not specifically limited here.

[0046] Furthermore, it further includes a return water main 7, which is communicated with a return water branch pipe (not shown in the figure) of the tower body 1, and the return water branch pipe is used to collect the water flow of the water distribution channel 63. The return water branch pipe is also connected to the water guide channel 314 of the exhaust pipe 3, and is used to guide the water recovered by the water suction ring cover 312 and the water suction ring platform 313 into the return water main 7, so that the water recovered by the water suction ring cover 312 and the water suction ring platform 313 can be recycled. Preferably, a temperature sensor is provided on the return water main 7, which can detect the temperature of the recovered water flow, and negatively feedback adjust the regulating member 4 according to the temperature change to optimize the opening of the regulating member 4.

[0047] Furthermore, the installation height of the anemometer and wind vane 2 is higher than the installation height of the exhaust chimney 3. The height higher than the exhaust chimney 3 can improve the detection accuracy of wind direction and wind force, and the anemometer and wind vane 2 must be set above the highest exhaust position of the exhaust chimney 3 to prevent the external airflow from affecting the detection data of the anemometer and wind vane 2.

[0048] Furthermore, the water distribution channel 63 is provided with a plurality of layout openings 631, and a plurality of valves 632 are correspondingly provided on the layout openings 631, and the plurality of valves 632 are connected in parallel with the regulating member 4. The layout openings 631 are all provided with valves 632, and the valves 632 are in a parallel state, and can be controlled individually or together, and can be fine-tuned when the regulating member 4 is adjusted over a large range, so as to better utilize the water in each direction.

[0049] Furthermore, a vertically arranged air inlet window 11 is provided on the outer wall of the tower body 1, and a plurality of guide blades 12 are provided in the air inlet window 11. A guide motor (not shown in the figure) is movably provided on each of the blades 12. The guide motor is electrically connected to the controller 5, and there is a signal conduction relationship between the guide motor and the controller 5. When the controller 5 controls the corresponding adjustment member 4 to open, the corresponding signal will also be sent to the guide motor in the corresponding direction, so that the corresponding guide motor rotates the blades 12 in the corresponding wind direction, and the blades 12 in the corresponding wind direction are rotated to a state opposite to the direction in which the wind blows, thereby reducing the contact area between the blades 12 and the wind, reducing wind resistance, and achieving a better effect of utilizing wind energy.

[0050] A water distribution method for a high-efficiency air-conditioning cooling tower comprises the following steps:

[0051] S1: Set up a tester on the cooling tower to collect wind speed information V and wind direction information α outside the cooling tower.

[0052] S2; the collected wind speed information V, wind direction information α is transmitted to the control system, the information taken is analyzed and calculated, and the opening φ of the regulating component is obtained,

[0053] S3; adjusting and controlling the water supply line of the cooling tower by the regulating component, adjusting the water distribution around the cooling tower according to the opening φ of the regulating component,

[0054] S4; the control system analyzes the temperature of the cooling tower return pipe and fine-tunes the regulating component according to the water temperature.

[0055] S5; repeat steps 1-4, obtain wind speed information V and wind direction information α in real time, and adjust the opening φ of the regulating component in real time.

[0056] Preferably, in step S2, the opening φ of the regulating component is calculated as follows:

[0057] Among them, V max is the maximum wind speed in history for that month,

[0058] Taking the cooling tower air inlet direction as due south and due north as an example,

[0059] When cosα is a positive value, the adjusting member 4 on the due south side (leeward side) is turned down; when cosα is a negative value, the adjusting member 4 on the due north side (leeward side) is turned down.

[0060] After a lot of testing, we got the following data:

[0061] project unit Test data 1 Test Data 2 Test data 3 Test data 4 Wind speed measured value m / s 7.5 5.2 9.6 13.5 Wind direction measured value ° 22.5 45 157.5 315 Leeward side electric regulating valve opening ％ 91.7 95.6 89.4 88.5 Adjust the cooling outlet water temperature on the windward side before ℃ 31.8 32 31.7 31.5 Adjust the cooling outlet water temperature on the front leeward side ℃ 32.3 32.2 32.3 32.1 Adjust the cooling water temperature of the front return water main ℃ 32.05 32.10 32.00 31.80 Adjusted windward cooling outlet water temperature ℃ 31.7 31.7 31.6 31.4 Adjust the cooling outlet water temperature on the leeward side ℃ 31.8 31.9 31.7 31.6 Adjusted return water main cooling water temperature ℃ 31.75 31.80 31.65 31.49

[0062] It can be seen that the water at the return water main 7 after adjustment has achieved a better cooling effect. Based on the optimal adjustment function relationship between the water distribution on both sides and the wind speed and wind direction, and by adjusting the water distribution method and water distribution amount of the water distribution system, the water distribution amount of the filling area on both sides of the cooling tower is adjusted, thereby changing the deviation of the air-water ratio on both sides of the cooling tower caused by the influence of side wind.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency cooling tower for air conditioning, characterized in that: include: A tower body (1), an anemometer (2), an exhaust pipe (3), an adjustment member (4), a controller (5), and a water supply assembly (6), wherein the anemometer (2) is arranged on the exhaust pipe (3), and a receiving end of the controller (5) is electrically connected to the anemometer (2). The wind speed and direction instrument (2) monitors wind direction and wind speed information and sends the information to the controller (5). The controller (5) controls the opening of the regulating member (4) in different directions to cool the water temperature of the flowing water in the water supply component (6). The exhaust pipe (3) comprises a water blocking platform (31) and an exhaust fan (32); the water blocking platform (31) comprises a wire cover (311); a water absorption ring cover (312) and a water absorption ring platform (313) are fixed to the wire cover (311); the water absorption ring cover (312) and the water absorption ring platform (313) are used to absorb moisture in hot air sucked to the outside by the exhaust fan (32); a water guide channel (314) is provided at the bottom of the water absorption ring platform (313); The water supply assembly (6) comprises a water supply main pipe (61), the water outlet of the water supply main pipe (61) being connected to a plurality of water supply branch pipes (62), a regulating member (4) being provided on the flow channel of the water supply branch pipe (62), a water distribution channel (63) being provided at the water outlet of the water supply branch pipe (62), the regulating member (4) being used to configure the distribution amount of the water supply main pipe (61) to each of the water distribution channels (63), The high-efficiency air-conditioning cooling tower further comprises a return water main pipe (7), the return water main pipe (7) being in communication with a return water branch pipe of the tower body (1), the return water branch pipe being used to collect water flow from the water distribution channel (63), the return water branch pipe being also connected to the water guide channel (314) of the exhaust pipe (3) and being used to guide water recovered by the water suction ring cover (312) and the water suction ring platform (313) into the return water main pipe (7), The outer wall of the tower body (1) is provided with vertically arranged air inlet windows (11), a plurality of guide blades (12) are provided in the air inlet windows (11), each of the blades (12) is movably provided with a guide motor, and the guide motor is electrically connected to the controller (5).

2. A high-efficiency air-conditioning cooling tower according to claim 1, characterized in that: The installation height of the anemometer and wind direction instrument (2) is higher than the installation height of the exhaust pipe (3).

3. A high-efficiency air-conditioning cooling tower according to claim 1, characterized in that: The water distribution channel (63) is provided with a plurality of distribution openings (631), and a plurality of valves (632) are provided on the distribution openings (631) in a one-to-one correspondence, and the plurality of valves (632) are connected in parallel with the regulating member (4).

4. A water distribution method for a high-efficiency cooling tower for air conditioning according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1: Set up a tester on the cooling tower to collect wind speed information V and wind direction information α outside the cooling tower. S2; the collected wind speed information V, wind direction information α is transmitted to the control system, the information taken is analyzed and calculated, and the opening φ of the regulating component is obtained, S3; adjusting and controlling the water supply line of the cooling tower by the regulating component, adjusting the water distribution around the cooling tower according to the opening φ of the regulating component, S4; the control system analyzes the temperature of the cooling tower return pipe and fine-tunes the regulating component according to the water temperature. S5; repeat steps 1-4, obtain wind speed information V and wind direction information α in real time, and adjust the opening φ of the regulating component in real time.

5. The water distribution method for a high-efficiency cooling tower for air conditioning according to claim 4, characterized in that: In step S2, the opening φ of the regulating component is calculated as follows: ,in, V max is the maximum wind speed in history for that month.

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