Circulating cooling tower with water saving device

Abstract

The present disclosure relates to the technical field of cooling towers, and one embodiment of the present disclosure provides a circulating cooling tower with a water-saving device, which comprises a tower body, a collection tray arranged at the bottom of the tower body, a purification and water removal assembly arranged in the interior of the tower body, and a filtration and circulation assembly arranged on the inner side of the tower body; the purification and water removal assembly comprises a circulating water inlet pipe which is inserted into the interior of the tower body, the lower end surface of the circulating water inlet pipe is provided with a water spraying cover, the interior of the tower body is provided with a mounting rack, the mounting rack is provided with water removal sheets, the inner side wall of each water removal sheet is provided with a heating cavity, and the interior of each heating cavity is provided with a heating coil pipe. Through the above technical scheme, the problems existing in the operation of the traditional circulating cooling tower in the prior art are solved, and the most prominent problem is the waste of water resources. In the process of heat and mass transfer between the circulating cooling water and the air in the cooling tower, water loss occurs in three forms, namely, blowdown loss, wind loss and evaporation loss.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of cooling tower technology, and more specifically, to a circulating cooling tower with a water-saving device. Background Technology

[0002] A circulating cooling tower is a widely used device in the industrial field to reduce the heat generated by equipment in industrial processes. It generates steam by exchanging heat between water and air, and uses the steam to carry away heat through evaporation, achieving the purposes of evaporative heat dissipation, convective heat transfer, and radiative heat transfer, thereby reducing the water temperature and ensuring the normal operation of the system.

[0003] In many industries such as pharmaceuticals, chemicals, and power, circulating cooling towers play a vital role. For example, in the pharmaceutical field, it is often necessary to cool equipment such as reactors, condensers, and dryers to control the temperature and ensure the normal operation of the reaction.

[0004] However, traditional circulating cooling towers have some problems during operation, the most prominent of which is water waste. During the heat and mass transfer between circulating cooling water and air in the cooling tower, water loss occurs in three forms: sewage loss, wind loss, and evaporation loss. Among these, evaporation loss accounts for 30%-55% of the total water loss and 1.2%-1.6% of the circulating water volume, making it the largest of the three types of water loss in cooling towers and a major factor in water loss in power plants and other industrial sectors.

[0005] To address the water conservation issue in cooling towers, current research directions and technical approaches mainly include the following: One approach is to reduce the temperature of the cooling water before it enters the cooling tower and sprays it, thereby reducing the cooling heat load on the packing layer after the cooling water enters the tower and achieving water conservation. However, reducing the temperature of the circulating cooling water in advance requires a large amount of refrigerant, resulting in high initial investment costs. Another approach is to cool and condense the water vapor above the water baffle of the cooling tower to save water. This can be achieved by using heat pipe technology, spraying condensate, water-cooled plate heat exchangers, and air heat exchangers to cool and condense the water vapor and recover the water lost due to evaporation. However, this approach suffers from problems such as immature technology, high costs, low heat exchange efficiency, and impact on ventilation inside the tower.

[0006] In addition, traditional circulating cooling towers also face challenges in water quality maintenance. Impurities in the circulating water can easily accumulate inside the tower, causing blockages and affecting the cooling effect and equipment lifespan. Some existing technologies use swirl plates and rotating shafts to scrape away impurities from the inner wall of the tower. Although this can prevent impurities from adhering to the inner wall, the impurity particles are still inside the tower. Over time, this can damage the internal components and cause blockages.

[0007] Therefore, developing a circulating cooling tower with high water-saving efficiency, effective treatment of impurities in circulating water, and ability to ensure stable operation and extend equipment life is of great practical significance. Utility Model Content

[0008] To overcome the above-mentioned defects, the embodiments of this disclosure provide a circulating cooling tower with a water-saving device, which solves some problems in the operation of traditional circulating cooling towers in the prior art, among which the most prominent problem is the waste of water resources. During the heat and mass transfer process between circulating cooling water and air in the cooling tower, water loss occurs in three forms: sewage loss, wind loss, and evaporation loss.

[0009] According to one aspect, at least one embodiment of the present disclosure provides a circulating cooling tower with a water-saving device, comprising:

[0010] The tower body, with a water collection tray at its bottom;

[0011] A water purification and dewatering assembly is disposed inside the tower body;

[0012] A filter circulation assembly is disposed inside the tower body;

[0013] The purification and dewatering assembly includes a circulating water inlet pipe, which is inserted into the interior of the tower body. A water spray hood is provided on the lower end face of the circulating water inlet pipe, and a connecting pipe is provided on the upper end of the water spray hood. The connecting pipe is connected to the circulating water inlet pipe, and an atomizing nozzle is provided inside the connecting pipe. A mounting frame is provided inside the tower body, and a dewatering plate is provided on the mounting frame. A heating chamber is provided on the inner side wall of the dewatering plate, and a heating coil is provided inside the heating chamber.

[0014] As a further technical solution, a sealing plug is provided at the end of the circulating water inlet pipe, an installation sleeve is fitted on the circulating water inlet pipe, an installation bracket is provided on the side wall of the installation sleeve, and the end of the installation bracket is fixedly connected to the inner side wall of the tower body.

[0015] As a further technical solution, the filtration circulation assembly includes a placement ring, which is disposed on the inner side wall of the tower body. A drip filter screen is disposed inside the placement ring, and a sound wave generator is disposed on the lower end face of the placement ring. The sound wave generator is fitted at the edge of the drip filter screen.

[0016] As a further technical solution, the water collection tray is located on the lower end face of the tower body, and the position of the water collection tray corresponds to that of the drip filter screen. A circulating water outlet pipe is provided on the side wall of the water collection tray.

[0017] As a further technical solution, the dewatering plate is attached to the tower body, the dewatering plate is composed of multiple curved components arranged in an orderly manner, and the heating coil is a resistance heating tube.

[0018] As a further technical solution, a support column is provided between the tower body and the water collection tray, and the structure between the water collection tray and the tower body is matched.

[0019] As a further technical solution, the diameter of the circulating water inlet pipe is the same as that of the circulating water outlet pipe.

[0020] As a further technical solution, a feed pipe is provided on the side wall of the tower body, and the feed pipe is located at the lower end of the drip filter screen.

[0021] The beneficial effects of the embodiments disclosed herein are as follows:

[0022] 1. In this disclosure, through the design of the dewatering plate and the heating coil, the water vapor generated during the heat exchange process rises and condenses into water droplets when it encounters the low-temperature dewatering plate, avoiding direct loss in the form of steam. When water accumulates on the surface of the dewatering plate, the heating coil is energized and heated, causing the attached water droplets to evaporate again into water vapor (which can re-participate in the condensation cycle) instead of dripping and being lost directly. This significantly reduces the evaporation loss of circulating water, allowing 30%-55% of the water lost in traditional evaporation to be recycled through condensation.

[0023] 2. In this disclosure, water quality stabilizers (such as scale inhibitors and bactericides) can be added to the feed pipe on the side wall of the tower as needed. While filtering impurities, it inhibits scale formation and microbial growth from the source, reduces the corrosion of equipment by circulating water, and extends the service life of the cooling tower and its supporting systems. In addition, the feed pipe can also be used to add cooling media, flexibly adapting to the cooling needs of different industrial scenarios. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0025] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0026] Figure 2 This is a cross-sectional view of the circulating water inlet pipe disclosed herein;

[0027] Figure 3 This is a cross-sectional axonometric view of the water removal plate disclosed herein;

[0028] Figure 4 This is a cross-sectional view of the drip filter screen disclosed herein;

[0029] In the diagram: 1. Tower body; 2. Water collection tray; 3. Purification and dewatering assembly; 3-1. Circulating water inlet pipe; 3-2. Water spray hood; 3-3. Connecting pipe; 3-4. Atomizing nozzle; 3-5. Mounting frame; 3-6. Dewatering plate; 3-7. Heating chamber; 3-8. Heating coil; 3-9. Sealing plug; 3-10. Mounting sleeve; 3-11. Mounting frame; 4. Filter circulation assembly; 4-1. Mounting ring; 4-2. Drip filter screen; 4-3. Sound wave generator; 4-4. Circulating water outlet pipe; 5. Support column; 6. Feed pipe. Detailed Implementation

[0030] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0031] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, encompassing fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections via an intermediate medium; and connections within two components. Those skilled in the art can understand the specific meaning of these terms in this disclosure based on the specific circumstances.

[0033] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 1-4 As shown, a circulating cooling tower with a water-saving device according to this disclosure is illustrated, comprising:

[0037] Tower body 1, with a water collection tray 2 at the bottom of tower body 1;

[0038] Purification and water removal component 3 is installed inside the tower body 1;

[0039] The filter circulation assembly 4 is located inside the tower body 1.

[0040] The purification and dewatering component 3 includes a circulating water inlet pipe 3-1, which is inserted into the interior of the tower body 1. A water spray hood 3-2 is provided on the lower end face of the circulating water inlet pipe 3-1, and a connecting pipe 3-3 is provided on the upper end of the water spray hood 3-2. The connecting pipe 3-3 is connected to the circulating water inlet pipe 3-1, and an atomizing nozzle 3-4 is provided inside the connecting pipe 3-3. A mounting frame 3-5 is provided inside the tower body 1, and a dewatering plate 3-6 is provided on the mounting frame 3-5. A heating chamber 3-7 is provided on the inner side wall of the dewatering plate 3-6, and a heating coil 3-8 is provided inside the heating chamber 3-7.

[0041] The filter circulation assembly 4 includes a placement ring 4-1, which is located on the inner side wall of the tower body 1. A drip filter 4-2 is installed inside the placement ring 4-1. A sound wave generator 4-3 is installed on the lower end face of the placement ring 4-1 and is fitted around the edge of the drip filter 4-2.

[0042] In some examples, the tower body 1 has a columnar structure with a water collection tray 2 at its bottom. The tower body 1 and the water collection tray 2 are fixedly connected by support columns 5, which are evenly distributed between the tower body 1 and the water collection tray 2, allowing the water collection tray 2 to be stably supported on the lower end face of the tower body 1. The structure between the water collection tray 2 and the tower body 1 is tightly matched to prevent water leakage. The lower end face of the circulating water inlet pipe 3-1 is connected to a water spray hood 3-2. The upper end of the water spray hood 3-2 is connected to the circulating water inlet pipe 3-1 through a connecting pipe 3-3. An atomizing nozzle 3 is installed inside the connecting pipe 3-3. -4. When circulating water flows into connecting pipe 3-3 from circulating water inlet pipe 3-1, it is atomized into fine water droplets by atomizing nozzle 3-4 and sprayed out from water spray cover 3-2, which increases the contact area between water and air and improves heat exchange efficiency. The tower body 1 is equipped with a mounting frame 3-5, on which a water removal plate 3-6 is fixedly installed. The water removal plate 3-6 is tightly attached to the inner wall of the tower body 1. The water removal plate 3-6 is composed of multiple curved components arranged in an orderly manner. This structural design increases the surface area of ​​the water removal plate 3-6, which is conducive to improving the water removal effect.

[0043] The placement ring 4-1 is installed on the inner wall of the tower body 1. A drip filter 4-2 is fixedly installed inside the placement ring 4-1. The drip filter 4-2 is arranged horizontally to intercept impurities falling from above and prevent them from entering the collection pan 2. A sound wave generator 4-3 is installed on the lower end face of the placement ring 4-1. The sound wave generator 4-3 is fitted at the edge of the drip filter 4-2. When the sound wave generator 4-3 is working, the sound waves generated can cause the impurities attached to the drip filter 4-2 to vibrate and fall off, preventing impurities from clogging the filter and ensuring the filtration effect of the filter. The collection pan 2 is set on the lower end face of the tower body 1, corresponding to the position of the drip filter 4-2. Water falling from the drip filter 4-2 directly enters the collection pan 2.

[0044] The circulating water requiring cooling enters through the circulating water inlet pipe 3-1, is atomized by the atomizing nozzle 3-4, and then sprayed out from the spray hood 3-2. Inside the tower body 1, it exchanges heat with the air, and the heat is carried away by the air, causing the water temperature to drop. The water vapor generated during the heat exchange process rises and encounters the dewatering plate 3-6. Some of the water vapor condenses into water droplets on the dewatering plate 3-6. The heating coil 3-8 on the dewatering plate 3-6 can heat the dewatering plate 3-6 when needed to prevent water droplet accumulation. After heat exchange, the water and condensed water droplets fall down and pass through the drip filter screen 4-2. Impurities are intercepted by the filter screen, and the water flows into the collection water pan 2. Finally, it flows out through the circulating water outlet pipe 4-4 to enter the next cycle. At the same time, the sound wave generator 4-3 works to prevent impurities from clogging the drip filter screen 4-2. The feed pipe 6 can be used to add substances or agents that need to be cooled to meet different usage requirements.

[0045] like Figures 1-4As shown in the figure, this embodiment proposes that the end of the circulating water inlet pipe 3-1 is provided with a sealing plug 3-9, the circulating water inlet pipe 3-1 is fitted with an installation sleeve 3-10, the side wall of the installation sleeve 3-10 is provided with an installation bracket 3-11, and the end of the installation bracket 3-11 is fixedly connected to the inner side wall of the tower body 1.

[0046] In some examples, the circulating water inlet pipe 3-1 is inserted into the inside of the tower body 1 from the top of the tower body 1, and its end is provided with a sealing plug 3-9 to prevent water leakage. The circulating water inlet pipe 3-1 is fitted with an installation sleeve 3-10, and an installation bracket 3-11 is welded to the side wall of the installation sleeve 3-10. The end of the installation bracket 3-11 is fixedly connected to the inner side wall of the tower body 1 by bolts to ensure the stable installation of the circulating water inlet pipe 3-1 inside the tower body 1.

[0047] like Figure 1 As shown, the water collection tray 2 is located on the lower end face of the tower body 1. The position of the water collection tray 2 corresponds to that of the drip filter screen 4-2. The side wall of the water collection tray 2 is provided with a circulating water outlet pipe 4-4.

[0048] In some examples, the side wall of the water collection pan 2 is connected to a circulating water outlet pipe 4-4, which is used to transport the water in the water collection pan 2 to the subsequent recycling stage.

[0049] like Figure 1 As shown, the dewatering plate 3-6 is attached to the tower body 1. The dewatering plate 3-6 is composed of multiple curved components arranged in an orderly manner. The heating coil 3-8 is a resistance heating tube.

[0050] like Figure 1 As shown, a support column 5 is provided between the tower body 1 and the water collection pan 2, and the structure between the water collection pan 2 and the tower body 1 is matched.

[0051] In some examples, the inner wall of the dewatering plate 3-6 is provided with a heating chamber 3-7, and a heating coil 3-8 is installed inside the heating chamber 3-7. The heating coil 3-8 is a resistance heating tube. When dewatering is required, the resistance heating tube is energized, and the resistance heating tube heats up the heating chamber 3-7, thereby raising the temperature of the dewatering plate 3-6 and evaporating the water adhering to the dewatering plate 3-6, preventing water accumulation from affecting the dewatering effect.

[0052] like Figure 1 As shown, the circulating water inlet pipe 3-1 and the circulating water outlet pipe 4-4 have the same diameter.

[0053] In some examples, the circulating inlet pipe 3-1 and the circulating outlet pipe 4-4 have the same diameter to ensure smooth water circulation.

[0054] like Figure 1 As shown, a feed pipe 6 is provided on the side wall of the tower body 1, and the feed pipe 6 is located at the lower end of the drip filter screen 4-2.

[0055] In some examples, the side wall of the tower body 1 is provided with a feed pipe 6, which is located at the lower end of the drip filter 4-2 and is used to introduce the air that needs to be discharged into the tower body 1.

[0056] In operation, the circulating water requiring cooling enters the tower body 1 through the circulating water inlet pipe 3-1. When the water flows to the connecting pipe 3-3, the atomizing nozzle 3-4 atomizes the water into fine droplets, which are then sprayed out from the spray hood 3-2. This atomization process significantly increases the contact area between the water and the air, greatly improving the heat exchange efficiency. During the heat exchange process, the air absorbs heat from the water, causing the water temperature to drop and achieving initial cooling. During this process, some of the water is heated and vaporized into water vapor. This water vapor rises and encounters cooler air... Due to the temperature difference, water vapor condenses into water droplets on the surface of water separator 3-6. When a large number of water droplets accumulate on water separator 3-6, electricity is supplied to the heating coil 3-8 (resistance heating tube), which heats the heating chamber 3-7, thereby raising the temperature of water separator 3-6 and evaporating the attached water. This prevents excessive water droplet accumulation from affecting the water removal effect of water separator 3-6, and also avoids water loss directly in the form of water vapor, achieving water conservation. After heat exchange, the water and condensed water droplets fall and drip through the filter. Net 4-2 filters the falling water, intercepting impurities and preventing them from entering the collection tray 2 and affecting water quality. The sound generator 4-3 on the lower end of the ring 4-1 operates continuously, generating sound waves that act on the drip filter net 4-2, causing impurities attached to the net to fall off due to vibration. This ensures the filter net maintains good filtration performance and prevents clogging. The filtered water falls smoothly into the collection tray 2, which, due to its position corresponding to the drip filter net 4-2, effectively collects the filtered water. The circulating water outlet pipe 4-4 on the side wall of the tray 2 transports the water in the tray to the subsequent recycling stage. The circulating water inlet pipe 3-1 and the circulating water outlet pipe 4-4 have the same diameter, ensuring the stability of the flow rate and pressure balance during the water circulation process, and realizing the efficient recycling of water resources. The feed pipe 6 on the side wall of the tower body 1 is located at the lower end of the drip filter screen 4-2. The feed pipe 6 is connected to the air that needs to be discharged and purified, which affects the cooling effect and equipment life; or specific cooling media can be added to improve the cooling efficiency and meet the usage requirements under different working conditions.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A circulating cooling tower with a water-saving device, characterized in that, include: The tower body (1) has a water collection tray (2) at its bottom; A purification and dewatering component (3) is disposed inside the tower body (1); A filter circulation assembly (4) is disposed inside the tower body (1); The purification and dewatering component (3) includes a circulating water inlet pipe (3-1), which is inserted into the interior of the tower body (1). A water spray hood (3-2) is provided on the lower end face of the circulating water inlet pipe (3-1), and a connecting pipe (3-3) is provided on the upper end of the water spray hood (3-2). The connecting pipe (3-3) is connected to the circulating water inlet pipe (3-1). An atomizing nozzle (3-4) is provided inside the connecting pipe (3-3). A mounting frame (3-5) is provided inside the tower body (1), and a dewatering plate (3-6) is provided on the mounting frame (3-5). A heating chamber (3-7) is provided on the inner side wall of the dewatering plate (3-6), and a heating coil (3-8) is provided inside the heating chamber (3-7).

2. A circulating cooling tower with a water-saving device according to claim 1, characterized in that, The end of the circulating water inlet pipe (3-1) is provided with a sealing plug (3-9), and an installation sleeve (3-10) is fitted on the circulating water inlet pipe (3-1). An installation bracket (3-11) is provided on the side wall of the installation sleeve (3-10), and the end of the installation bracket (3-11) is fixedly connected to the inner side wall of the tower body (1).

3. A circulating cooling tower with a water-saving device according to claim 1, characterized in that, The filter circulation assembly (4) includes a placement ring (4-1), which is disposed on the inner side wall of the tower body (1). A drip filter (4-2) is disposed inside the placement ring (4-1), and a sound wave generator (4-3) is disposed on the lower end face of the placement ring (4-1). The sound wave generator (4-3) is fitted at the edge of the drip filter (4-2).

4. A circulating cooling tower with a water-saving device according to claim 3, characterized in that, The water collection tray (2) is located on the lower end face of the tower body (1). The water collection tray (2) is positioned corresponding to the drip filter screen (4-2). A circulating water outlet pipe (4-4) is provided on the side wall of the water collection tray (2).

5. A circulating cooling tower with a water-saving device according to claim 1, characterized in that, The dewatering plate (3-6) is attached to the tower body (1). The dewatering plate (3-6) is composed of multiple curved components arranged in an orderly manner. The heating coil (3-8) is a resistance heating tube.

6. A circulating cooling tower with a water-saving device according to claim 1, characterized in that, A support column (5) is provided between the tower body (1) and the water collection tray (2), and the structure between the water collection tray (2) and the tower body (1) is matched.

7. A circulating cooling tower with a water-saving device according to claim 4, characterized in that, The circulating water inlet pipe (3-1) and the circulating water outlet pipe (4-4) have the same diameter.

8. A circulating cooling tower with a water-saving device according to claim 3, characterized in that, The tower body (1) is provided with a feed pipe (6) on its side wall, and the feed pipe (6) is located at the lower end of the drip filter (4-2).

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