Large-temperature-difference low-approximation-degree extreme cooling countercurrent cooling tower

Abstract

The utility model discloses a large-temperature-difference low-approximation extreme-cooling countercurrent cooling tower, which belongs to the technical field of cooling towers, and comprises a tower body, an air duct, a fan system, an air inlet pipe, an air outlet pipe, an air outlet pipe, an air inlet pipe and an air outlet pipe, and is characterized in that the air duct is positioned at the top end of the tower body; the spraying system is used for spraying cooling water; the water collecting basin is positioned at the bottom of the tower body and used for collecting cooling water; the total height of the water spraying filler is greater than 3000mm, and the water spraying filler is positioned below the spraying system and above the water collecting basin; the air inlet shutters are positioned below the water spraying filler and are distributed on the side wall of the tower body; the water spraying filler is composed of at least two layers, a movable shutter is arranged on the side wall of the tower body between two adjacent layers of water spraying filler, the movable shutter is of an openable structure, and the opening angle of the movable shutter can be adjusted. Through the design of optimizing the filler height, reducing the water spraying density, arranging the adjustable movable shutters and the like, efficient cooling is realized, the high requirement of a data center liquid cooling system and the like on the cooling water temperature is met, and the energy consumption and the operation cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the cooling tower technical field, concretely is a big temperature difference low approximation degree extreme cold counterflow cooling tower. BACKGROUND

[0002] The wet-bulb temperature refers to the equilibrium temperature reached after the heat and mass exchange between wet air and water under certain conditions. It refers to the temperature of the system when the air in the system reaches the saturation state and the system reaches thermal equilibrium, and the latent heat required for water evaporation comes entirely from the sensible heat released by the temperature drop of the wet air. In simple terms, the wet-bulb temperature is the lowest temperature that the current environment can reach through evaporation of water.

[0003] With the rapid development of big data, cloud computing and artificial intelligence, the energy consumption of data centers has increased dramatically, and the cooling system accounts for a large proportion of the energy consumption. Traditional air-cooled systems gradually expose the drawbacks of low efficiency and high energy consumption, while liquid-cooled systems stand out with their high-efficiency cooling characteristics. As the core equipment of the cooling system, the performance of the cooling tower directly affects the energy efficiency of the entire system.

[0004] The cooling source required by liquid-cooled servers is higher than 30℃, which can meet the cooling demand. In most parts of the country, the wet-bulb temperature is lower than 30℃ throughout the year. Therefore, a cooling tower with low approximation degree is more suitable for the application scenario of liquid-cooled server cooling. At the same time, the larger the temperature difference, the higher the cooling efficiency. Because a larger temperature difference means that there is a greater driving force for heat conduction during the process, which can quickly transfer heat from the heat source to the cooling medium, and then dissipate to the surrounding environment. Therefore, when designing and using a cooling system, it is common to try to increase the temperature difference to improve the cooling efficiency.

[0005] There are many cooling tower products on the market, but most of them have some limitations in design. First, the packing height is generally low, usually below 1200mm, rarely exceeding 1500mm, which limits the contact area and time of cooling water and air, making it difficult to meet the strict requirements of cooling water temperature in high-load operation data centers and other application scenarios. Second, the water density setting is unreasonable, which can easily cause water droplet collision and merging, uneven distribution, and other problems, affecting heat exchange efficiency. Third, the ventilation design lacks flexibility, and cannot accurately adjust the air intake according to changes in external environmental temperature. In low-temperature climates, it is easy to overcool, and in high-temperature environments, it is difficult to meet the high-intensity cooling demand, making it difficult to adapt to the complex operating conditions of data centers in different seasons throughout the year, resulting in energy waste. INVENTION CONTENTS

[0006] To solve the above problems, the utility model provides a big temperature difference low approximation degree extreme cold counter flow cooling tower, through the design of optimizing the packing height, reducing the water spray density, setting adjustable movable louvers, realizes efficient cooling, satisfies the high demand of data center liquid cooling system to cooling water temperature, reduces energy consumption and operating cost.

[0007] To achieve the above object, the utility model adopts the technical scheme of:

[0008] A big temperature difference low approximation degree extreme cold counter flow cooling tower, including: the tower body, its inside is equipped with: the air cylinder, be located the tower body top, the air cylinder is provided with fan system in; spray system, be used for spraying cooling water, the water collecting basin is located the tower body bottom, be used for collecting cooling water, the water spray packing, total height is greater than 3000mm, be located the spray system below, the water collecting basin top, the air inlet louver, be located the water spray packing below, distribute in the tower body side wall, the water spray packing is made of not less than two layers, be equipped with movable louvers on the tower body side wall between adjacent two layers water spray packing, the movable louvers are openable and closable structure, and its opening and closing angle can be adjusted.

[0009] The beneficial effects produced by the above technical scheme are: by increasing the water spray packing height, the contact area and time of cooling water and air can be increased, which is beneficial to improve the cooling effect and reduce the difference between the outlet temperature of cooling water and the environmental wet bulb temperature; by reducing the water spray density, water droplet collision and merging can be reduced, water droplets can be more evenly distributed in the packing, and water-air heat exchange efficiency can be enhanced; by increasing the air inlet volume, air power can be enhanced, and evaporation heat dissipation of cooling water can be promoted. At the same time, the movable louvers can be adjusted in opening and closing angle according to the external environment temperature and cooling demand, the air inlet volume can be controlled, and the best cooling effect can be realized under different seasons and climate conditions, and the adaptability and energy saving of the cooling tower can be improved.

[0010] As a further improvement of the above scheme, the water spray density of the water spray packing is 1.0-3.0m 3 / (m 2 ·h).

[0011] The beneficial effects produced by the above technical scheme are: by controlling the water spray density in the range of 1.0-3.0m 3 / (m 2 ·h), the cooling water can be fully distributed on the packing to form a good water film or water droplets, and the problems of water droplet collision and merging, local water accumulation and the like caused by too large water spray density can be avoided, and the cooling effect can be affected. At the same time, the reasonable water spray density is helpful to reduce the risk of packing blockage, prolong the service life of the packing, and reduce the maintenance cost.

[0012] As a further improvement of the above scheme, the opening and closing angle adjustment range of the movable louvers is 0°-90°.

[0013] The beneficial effects of the above technical solution are: the opening and closing angle of the movable louvers is adjustable in the range of 0°-90°, which can realize various ventilation states from complete closing to complete opening. In low-temperature climate, the opening and closing angle of the movable louvers can be adjusted to be smaller or even closed, so as to reduce the air inlet amount and avoid affecting the stability of the cooling water temperature due to excessive cooling of the cooling tower; in high-temperature climate, the opening and closing angle of the movable louvers can be adjusted to be larger, so as to increase the air inlet amount and improve the cooling efficiency to meet the cooling demand. Such a wide range of adjustment capability enables the cooling tower to better adapt to different environmental conditions and realize energy-saving operation.

[0014] As a further improvement of the above scheme, the material of the water-spraying filler is PVC.

[0015] The beneficial effects of the above technical solution are: the PVC material has the advantages of light weight, low price, good chemical stability, strong corrosion resistance, etc. The use of the PVC material water-spraying filler in the cooling tower can effectively resist the corrosion of various chemical substances in the cooling water, prolong the service life of the filler; at the same time, the surface of the PVC material filler is smooth and not easy to scale, which is beneficial to maintaining the ventilation performance and cooling effect of the filler; in addition, the PVC material also has good thermal stability and can work stably in high-temperature environment to ensure the normal operation of the cooling tower.

[0016] As a further improvement of the above scheme, a ventilation box is arranged between the filler and the side wall of the tower body; the ventilation box is through from top to bottom, and the lower end or the upper end is provided with an adjustable plate which can be turned to open and close; the two ends of the adjustable plate are installed in the ventilation box through rotating shafts; one end of the rotating shaft extends out of the outer wall of the tower body and is connected with a handle.

[0017] The beneficial effects of the above technical solution are: the arrangement of the ventilation box can form an additional ventilation channel between the filler and the side wall of the tower body, further increasing the air flow and improving the cooling efficiency. The design of the adjustable plate enables the operator to conveniently control the opening and closing of the adjustable plate through the handle, flexibly adjust the ventilation amount according to actual needs, realize the best cooling effect under different working conditions, and also be beneficial to adjusting the airflow distribution in the cooling tower to avoid airflow short circuit or uneven phenomenon.

[0018] Compared with the prior art, the overall beneficial effects of the present application are:

[0019] The present application realizes the cooling effect of large temperature difference and low approach degree through optimizing the height of the water-spraying filler, reducing the water-spraying density, increasing the air inlet amount into the tower, and arranging movable louvers, etc., can meet the application scenarios with high requirements for cooling water temperature such as data center liquid cooling system, improve the cooling efficiency, and reduce energy consumption and operation cost; at the same time, the structure design is reasonable and has strong adaptability, which can be widely applied to industrial cooling fields under different climate conditions, and has significant economic and social benefits. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0021] Figure 2 It is a front internal structure schematic view of the utility model.

[0022] Figure 3 It is a structure schematic view of the ventilation box arranged at the side of the filler.

[0023] Figure 4 It is a structure schematic view of the ventilation box.

[0024] Figure 5 It is an installation sectional view schematic view of the filler and the ventilation box in the tower body.

[0025] In the drawing: 1, fan system; 2, air duct; 3, spraying system; 4, tower body; 5, filler; 6, air inlet louver; 7, water collecting basin; 8, central cylinder; 9, water outlet; 10, water inlet; 11, movable louver; 12, ventilation box; 13, adjusting plate; 14, rotating shaft. DETAILED DESCRIPTION

[0026] In order to make the person skilled in the art better understand the technical scheme, the utility model is described in detail below in combination with examples, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model.

[0027] I. Introduction of the overall structure of the cooling tower

[0028] As shown in Figures 1-5 The utility model provides a big temperature difference low approximation degree extreme cold counterflow cooling tower, mainly by tower body 4, air duct 2, fan system 1, spraying system 3, water collecting basin 7, water spraying filler 5, air inlet louver 6 etc. component constitutes. Tower body 4 is the support and containment structure of whole cooling tower, and the inside reasonable layout each functional component, ensures that cooling process is carried out efficiently. Air duct 2 is located at the top of tower body 4, and is internally installed with fan system 1, and the fan runs and produces strong airflow, provides power support for the evaporation heat dissipation of cooling water, promotes hot air to discharge outside the tower. Spraying system 3 is responsible for uniform spraying cooling water, so that cooling water can fully contact with air, realizes heat exchange. Water collecting basin 7 is at the bottom of tower body 4, and is used to collect the water after cooling, so as to be recycled or discharged. Water spraying filler 5 is one of the core components of the cooling tower, and the total height exceeds 3000mm, which is much higher than the height of ordinary cooling tower filler 5, adopts multilayer structure design, and movable louver 11 is arranged between adjacent two layers, and the material of filler 5 is PVC, which has good corrosion resistance and thermal stability. Air inlet louver 6 is distributed on the side wall of tower body 4 and is located below water spraying filler 5, and is used to guide the outside air into the tower and exchange heat with the cooling water.

[0029] A central cylinder 8 is arranged at the bottom of the water collecting basin 7, and a water outlet 9 is arranged at the bottom of the central cylinder 8. The water inlet 10 is connected to the spray system 3, and the water inlet 10 and the water outlet 9 are connected by a circulating pipeline and a water pump.

[0030] II. Component details and function description

[0031] 1. Adjustable louvers 11: The adjustable louvers 11 are installed on the side wall of the tower body 4 between two adjacent layers of water spraying fillers 5, and the opening and closing angle can be adjusted within the range of 0°-90°. When the external environment temperature is low, the opening and closing angle of the adjustable louvers 11 can be adjusted to reduce the air intake, so as to avoid excessive cooling of the cooling tower. In high temperature environment, the opening and closing angle of the adjustable louvers 11 is adjusted to increase the air intake, so as to meet the cooling demand. This flexible adjustment mechanism enables the cooling tower to adapt to different seasons and climate conditions, and realizes energy-saving operation.

[0032] 2. Ventilation box 12 and adjusting plate 13: The ventilation box 12 is arranged between the filler 5 and the side wall of the tower body 4, and the ventilation box is flat and penetrates from top to bottom. The lower end or the upper end is provided with an adjusting plate 13 which can be turned to open or close. The adjusting plate 13 is installed in the ventilation box 12 through a rotating shaft 14, one end of the rotating shaft 14 extends to the outer wall of the tower body 4 and is connected with a handle, so as to facilitate the operator to control the opening and closing of the adjusting plate 13 according to the actual needs. The opening and closing of the adjusting plate 13 can adjust the direction of the external air entering the tower body through the louvers. After the adjusting plate is opened, part of the air volume can bypass the current filler layer and directly enter the upper filler layer, further improving the flexibility of air volume adjustment and adapting to more working conditions.

[0033] III. Working principle and operation steps

[0034] 1. Working principle: When the cooling tower is running, the cooling water is uniformly sprayed on the water spraying filler 5 through the spray system 3, forming a water film or water droplets. At the same time, the fan system 1 is started, and the air enters the tower from the air inlet louvers 6, and the cooling water and the air are countercurrently exchanged in the water spraying filler 5. Due to the increase of the height of the water spraying filler 5 and the adoption of the multi-layer structure design, the contact area and time of the cooling water and the air are greatly increased, and the water spraying density is reduced, so that the water droplet distribution is more uniform, the water droplet collision and combination are reduced, and the heat exchange efficiency is improved. In the heat exchange process, the cooling water releases heat and the temperature decreases, and finally flows into the water collecting basin 7. By adjusting the opening and closing angle of the adjustable louvers 11 and the adjusting plate 13 in the ventilation box 12, the air intake and ventilation path can be flexibly controlled according to the environmental temperature and cooling demand, so as to ensure that the cooling tower can realize efficient cooling under different working conditions.

[0035] 2. Operation steps:

[0036] Firstly, check whether all parts of the cooling tower are firmly installed to ensure that the fan system 1, the spray system 3 and other parts are in normal operation.

[0037] According to the current ambient temperature and cooling demand, the opening angle of the movable louvers 11 and the position of the adjusting plate 13 in the ventilation box 12 are pre-adjusted to set the ventilation volume.

[0038] Start the fan system 1 and the spraying system 3 to start circulating the cooling water, and air enters the tower to exchange heat with the cooling water.

[0039] During operation, closely monitor various parameters of the cooling tower, such as cooling water temperature, fan speed, spraying system 3 pressure, etc., and adjust the movable louvers 11 and the adjusting plate 13 in a timely manner according to actual conditions to ensure that the cooling effect reaches the best state.

[0040] Through the above design and operation, the extreme cooling counterflow cooling tower with large temperature difference and low approximation degree can achieve high-efficiency cooling effect, meet the application scenarios with high requirements for cooling water temperature of data center liquid cooling systems, reduce energy consumption and operation cost, and has significant economic and social benefits.

[0041] It should be noted that in this article, the terms: include, contain and any other variants are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. In this article, specific examples are used to describe the principles and implementation methods of the technical solutions of the present application. The above example is only used to help understand the method and its core idea of the present application. The above is only the preferred embodiment of the present application. It should be pointed out that due to the limited nature of the language expression, there are infinite specific structures objectively. For ordinary skilled persons in the technical field, without departing from the principles of the present application, some improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate way; these improvements, refinements, changes or combinations, or the direct application of the concept and technical solutions of the present application to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A large temperature difference, low approach, extreme cold counter flow cooling tower characterized by, The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower.

2. A large temperature difference, low approach, extreme cold counter-flow cooling tower according to claim 1, characterized in that, The water spray density of the water spray packing (5) is 1.0-3.0 m 3 / m 2 ·h).

3. A large temperature difference, low approach, extreme cold counter-flow cooling tower according to claim 1, characterized in that, The application relates to a cooling tower.

4. A large temperature difference, low approach, extreme cold counter-flow cooling tower according to claim 1, characterized in that, The application relates to a cooling tower.

5. A large temperature difference, low approach, extreme cold counter-flow cooling tower according to claim 1, characterized in that, The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to a cooling tower. The application relates to

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