Low-noise cooling tower cooling equipment

Abstract

The utility model discloses low-noise cooling equipment of a cooling tower, which belongs to the field of rail transit equipment and comprises a radiator, a fan, a spraying device and a control terminal. The radiator is communicated with a cooling circulation pipeline. And the fan is communicated with the radiator. And the spraying device is communicated with the fan. The control terminal is electrically connected with the fan and the spraying device. A cooling tower radiator adopts an air cooling and water cooling coexistence mode, and in winter with low environment temperature, the radiator is cooled by adopting air cooling preferentially; in summer with high environment temperature, when air cooling cannot meet the requirement, the air cooling and water cooling combined heat dissipation mode is started. On the basis of the same heat dissipation requirement, the size of the fan impeller can be reduced, the maximum linear speed of the impeller and the aerodynamic noise of the fan are reduced, and then the noise of the cooling tower is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail transit equipment field, specifically a low noise cooling tower cooling equipment. BACKGROUND

[0002] With the development of locomotive and motor car, its cooling system performance plays a vital role in overall operation efficiency and environmental adaptability. At present, cooling tower usually adopts direct current ventilator to cool radiator. This design meets the cooling demand to some extent, but there are obvious deficiencies under different environmental temperature conditions.

[0003] In summer, due to high environmental temperature, the temperature of ventilator inlet air is increased, and radiator needs greater heat dissipation capacity to maintain normal operation. Therefore, to meet the requirement of high heat dissipation, the air volume of ventilator needs to be significantly increased, thereby leading to the increase of ventilator volume and power. This not only makes the overall size and weight of cooling tower increase significantly, but also causes greater noise pollution problem, affecting the comfort of vehicle operation and environmental noise control.

[0004] And in winter, the environmental temperature is low, the temperature of ventilator inlet air is low, and the heat dissipation capacity required by radiator is significantly reduced, so that only small air volume can meet the demand. However, since the design of fan in the existing cooling tower system is usually optimized for extreme high temperature conditions, in low temperature environment, most of the performance of ventilator is idle, the energy utilization efficiency is significantly reduced, causing serious resource waste. INVENTION CONTENTS

[0005] The utility model is provided with a low noise cooling tower cooling equipment to solve the problems in the prior art.

[0006] The utility model provides a low noise cooling tower cooling equipment, which comprises:

[0007] A radiator is communicated with a cooling circulation pipeline;

[0008] A fan is communicated with the radiator;

[0009] A spraying device is communicated with the fan;

[0010] A control terminal is electrically connected with the fan and the spraying device.

[0011] Further, a temperature sensor is arranged on the cooling circulation pipeline, and the temperature sensor is electrically connected with the control terminal. The temperature sensor detects the temperature of the cooling liquid in the cooling circulation pipeline in real time and transmits data to the control terminal. The control terminal dynamically adjusts the operating state of the fan and the spraying device according to the temperature data.

[0012] Further, the fan is provided with a noise sensor electrically connected with the control terminal.

[0013] Further, the spray device comprises a water-cooled water tank and an atomizing nozzle, the atomizing nozzle is in communication with the water-cooled water tank and is arranged opposite to the fan.

[0014] Further, the radiator is externally provided with a gas-liquid separation device, the gas-liquid separation device comprises an air outlet and a liquid outlet, the liquid outlet is in communication with the water-cooled water tank.

[0015] Further, the gas-liquid separation device further comprises a plurality of separation cavities and a plurality of air inlets, the radiator comprises a plurality of heat dissipation units, the plurality of heat dissipation units are arranged in the corresponding separation cavities and are in communication with each other, the plurality of air inlets are in communication with the corresponding separation cavities, and the output direction of the air inlets is arranged eccentric to the central axis of the separation cavities.

[0016] Further, the gas-liquid separation device further comprises a filter, the filter is arranged between the radiator and the liquid outlet.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] 1. The cooling tower radiator adopts the coexistence mode of air cooling and water cooling, in winter when the ambient temperature is low, air cooling is preferred to cool the radiator, in summer when the ambient temperature is high, when air cooling cannot meet the requirements, the mode of air cooling and water cooling is started to cool together.

[0019] 2. The spray device is arranged at the air inlet of the fan, when air cooling cannot meet the cooling requirements, the water cooling system is started, the spray amount is controlled by the control terminal, the heat exchange is strengthened by air cooling and water cooling, and the purpose of efficient cooling is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of a low-noise cooling tower cooling device A.

[0022] Figure 2 It is a schematic diagram of the overall structure of a low-noise cooling tower cooling device B.

[0023] Figure 3 It is a schematic diagram of the structure of the gas-liquid separation device provided by the present application.

[0024] In the figure: 1, radiator; 11, cooling circulation pipeline; 12, temperature sensor; 13, heat dissipation unit; 2, fan; 21, noise sensor; 3, spraying device; 31, water cooling tank; 32, atomizing nozzle; 4, control terminal; 5, gas-liquid separation device; 51, air outlet; 52, liquid outlet; 53, separation cavity; 54, air inlet; 55, filter. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be described and explained in the following with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0026] Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those skilled in the art, the present application can be applied to other similar situations without creative labor. In addition, it can be understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in the present application, some design, manufacture or production changes based on the technical content disclosed in the present application are only routine technical means, and should not be understood as insufficient disclosure of the present application.

[0027] However, there will be cases where unnecessary details are omitted. For example, there are cases where detailed descriptions of matters that are well known, repeated descriptions of structures that are actually the same. This is to avoid the following description unnecessarily becoming lengthy, facilitating understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application, and are not intended to limit the subject matter recited in the claims.

[0028] Referring to Figure 1 As shown in the drawings, in the embodiment of the utility model, a low-noise cooling tower cooling equipment, including radiator 1, fan 2, spray device 3 and control terminal 4. Radiator 1 is communicated with cooling circulation pipeline 11. Fan 2 and radiator 1 are communicated. Spray device 3 and fan 2 are communicated. Control terminal 4 is electrically connected with fan 2 and spray device 3 respectively.

[0029] Radiator 1 is connected with cooling tower cooling object through cooling circulation pipeline 11, high-temperature medium is transported to radiator 1 to carry out heat exchange cooling, and the medium after cooling is transported back to the corresponding equipment, realizes cooling circulation. Radiator 1 realizes heat exchange function through the cooperation of fan 2, spray device 3 and control terminal 4. Among them, fan 2 is responsible for guiding airflow to carry out air cooling, spray device 3 sprays atomized water to fan 2 export area, and control terminal 4 controls the running state of fan 2 and spray device 3 according to operating parameters. By controlling the operation of the two modes of air cooling and water cooling through control terminal 4, the power output of fan 2 can be optimized according to the actual heat dissipation demand, the noise of fan 2 is reduced and the heat dissipation efficiency is improved, and different environmental temperature conditions are adapted.

[0030] The cooling equipment provides two control logics, namely a control loop based on medium temperature and a control loop based on fan 2 noise.

[0031] Temperature sensor 12 is arranged on cooling circulation pipeline 11, temperature sensor 12 detects the temperature of medium in cooling circulation pipeline 11 in real time, and transmits data to control terminal 4. Control terminal 4 adjusts the speed of fan 2 and the running state of spray device 3 according to temperature data to meet the heat dissipation demand. Through the temperature feedback closed-loop control system, the intelligent linkage of fan 2 and spray device 3 is realized, and the heat dissipation demand under different temperature conditions is dynamically adapted.

[0032] In one embodiment, when the radiator 1 outlet temperature ≤ 45℃, the spray device 3 is closed, and after the spray device 3 is closed, the radiator 1 outlet medium temperature will remain low or rise under the wind cooling of the fan 2; when the radiator 1 outlet temperature rises until the temperature ≥ 55℃, the spray device 3 is started, and when the radiator 1 outlet medium temperature continues to be 55℃ or has an increasing trend, the spray amount is gradually increased until the maximum spray amount enhances the cooling effect; when the radiator 1 outlet temperature shows a decreasing trend, the spray amount is gradually reduced, and when the radiator 1 outlet temperature ≤ 45℃, the spray device 3 is closed.

[0033] The fan 2 is provided with a noise sensor 21, which monitors the noise level of the fan 2 in real time and transmits the monitoring data to the control terminal 4. The control terminal 4 adjusts the speed of the fan 2 or enables the spray device 3 according to the noise condition to reduce the noise caused by high-speed operation of the fan 2.

[0034] The spray device 3 includes a water-cooled water tank 31 and an atomizing nozzle 32, the spray device 3 provides water for the atomizing nozzle 32 through the water-cooled water tank 31, the atomizing nozzle 32 atomizes and sprays water mist to the outlet area of the fan 2, and forms a double cooling effect in combination with wind cooling. The condensed water in the water mist is separated and recovered by using gas-liquid separation technology, thereby reducing the waste of spray water.

[0035] The outside of the radiator 1 is provided with a gas-liquid separation device 5, which includes an air outlet 51 and a liquid outlet 52, and the liquid outlet 52 is communicated with the water-cooled water tank 31. The airflow generated by the fan 2 mixes with the water mist and then exchanges heat with the radiator 1, and the atomized airflow after heat exchange is separated into liquid phase and gas phase under the action of the gas-liquid separation device 5, wherein the liquid phase forms water droplets and is collected at the liquid outlet 52 for discharge, and the gas phase is discharged through the air outlet 51. The water discharged from the liquid outlet 52 enters the water-cooled water tank 31 for recycling.

[0036] In one embodiment, please refer to Figure 2 and Figure 3 The gas-liquid separation device 5 further includes a plurality of separation cavities 53 and a plurality of air inlets 54, each separation cavity 53 is an independent space and is isolated from each other, the separation cavity 53 is preferably a cylindrical space, and the air inlet 54 is communicated on the side wall of the separation cavity 53 and is arranged eccentric to the central axis of the separation cavity 53. The radiator 1 includes a plurality of heat dissipation units 13, and the plurality of heat dissipation units 13 are arranged inside the corresponding separation cavities 53 and are communicated with each other, and the cooling medium sequentially passes through each heat dissipation unit 13 for heat exchange in the separation cavities 53.

[0037] The eccentric design of the air inlet 54 makes the airflow rotate in the separation chamber 53 to form a vortex, and separates the gas-liquid phase by using gravity and centrifugal force, thereby improving the efficiency of water mist and air separation, and optimizing the air flow path to enhance heat dissipation. At the same time, the heat dissipation unit 13 itself can also act as a baffling separation structure when in contact with the airflow, such as designing the heat dissipation unit 13 into a coil shape to improve the contact rate of the airflow with the heat dissipation unit 13. When the gas-liquid mixture encounters an obstruction, the airflow will be deflected to the top exhaust port 51, while the liquid will adhere to the obstruction surface due to inertia and fall under the action of gravity. This design integrates the radiator 1 and the gas-liquid separation device 5 into one structure, which separates the gas-liquid mixture while exchanging heat with the heat dissipation unit 13, thereby improving the integration of the system and enhancing the compactness of the equipment.

[0038] Further, a filter 55 is provided between the radiator 1 and the liquid outlet 52, which filters the impurities in the backflow water to ensure the cleanliness of the backflow water and avoid clogging the spray device 3.

[0039] In one embodiment, as shown in Figure 1 The filter 55 is used as a gas-liquid separation structure. The filter 55 increases the contact area between the gas-liquid mixture and the obstruction by arranging closely spaced pores, and uses the baffling separation principle to make the airflow deflected to the exhaust port 51, while the liquid adheres to the obstruction surface due to inertia and falls under the action of gravity.

[0040] It should be noted that the present application is not limited to the above embodiments. The above embodiments are only examples, and embodiments having the same technical idea and playing the same role and effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, within the scope of the main idea of the present application, various modifications of the embodiments that can be thought of by those skilled in the art, as well as other ways constructed by combining part of the components of the embodiments, are also included in the scope of the present application.

Claims

1. A low-noise cooling tower cooling apparatus, characterized by, Include: A radiator (1) is communicated with a cooling circulation pipeline (11); A fan (2) is communicated with the radiator (1); A spraying device (3) is communicated with the fan (2); A control terminal (4) is electrically connected with the fan (2) and the spraying device (3) respectively.

2. A low noise cooling tower cooling apparatus according to claim 1, wherein, The cooling circulation pipeline (11) is provided with a temperature sensor (12), and the temperature sensor (12) is electrically connected with the control terminal (4).

3. A low noise cooling tower cooling apparatus according to claim 1 wherein, The fan (2) is provided with a noise sensor (21), and the noise sensor (21) is electrically connected with the control terminal (4).

4. A low noise cooling tower cooling apparatus according to claim 1 wherein, The spraying device (3) comprises a water-cooled water tank (31) and an atomizing nozzle (32), the atomizing nozzle (32) is communicated with the water-cooled water tank (31) and is arranged opposite to the fan (2).

5. A low noise cooling tower cooling apparatus according to claim 4 wherein, The outside of the radiator (1) is provided with a gas-liquid separation device (5), the gas-liquid separation device (5) comprises an air outlet (51) and a liquid outlet (52), and the liquid outlet (52) is communicated with the water-cooled water tank (31).

6. A low noise cooling tower cooling apparatus according to claim 5 wherein, The gas-liquid separation device (5) further comprises a plurality of separation cavities (53) and a plurality of air inlets (54), the radiator (1) comprises a plurality of heat dissipation units (13), a plurality of the heat dissipation units (13) are arranged in the corresponding separation cavities (53) and are communicated with each other, a plurality of the air inlets (54) are communicated with the corresponding separation cavities (53), and the output direction of the air inlet (54) is arranged eccentrically with the central axis of the separation cavity (53).

7. A low noise cooling tower cooling apparatus according to claim 5 or 6, wherein The gas-liquid separation device (5) further comprises a filter (55), and the filter (55) is arranged between the radiator (1) and the liquid outlet (52).

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