Opening and closing mixed self-circulation refrigeration type cooling tower

Abstract

The invention discloses an opening and closing mixed self-circulation refrigeration type cooling tower, and relates to the technical field of industrial circulation cooling. The water collecting tank (5) is positioned at the bottom of the cooling tower body (8); the opening and closing mixed self-circulation refrigeration module comprises a closed box (6), a closed space is formed based on the cooling tower body (8), and the bottom of the closed box (6) is open and is in closed communication with the water collecting tank (5); the surface air cooler (2) is arranged towards the air inlet; the self-circulation water spraying mechanism (3) is connected to a self-circulation water spraying filler assembly (4), one side of the self-circulation water spraying filler assembly (4) is arranged towards the air inlet, and a water outlet of the self-circulation water spraying filler assembly (4) is connected into the water collecting tank (5) to form cooling circulation. The cooling tower can greatly improve the heat exchange efficiency, has the characteristics of water saving and energy saving, can effectively save the electrical investment of the system, and is low in operation cost and maintenance cost of the system.

Description

Technical Field

[0001] The present application relates to the technical field of industrial circulating cooling, and in particular to an open-closed hybrid self-circulating refrigeration type cooling tower. Background Art

[0002] The cooling or condensation of process media in the industrial field generally requires circulating water with a lower temperature. After absorbing heat, the circulating water needs to go to the cooling tower to evaporate and dissipate heat for cooling, and then be sent to the heat exchanger again to absorb the heat of the process medium. Cooling towers are divided into two categories: open and closed. In open cooling towers, the circulating water is in direct contact with the air from the environment for heat transfer, and the water quality is poor; while in closed cooling towers, the circulating water does not contact the ambient air, and the water quality is clean. Under the suction of the fan, the air in the environment is sucked into the tower for convective heat exchange with the circulating water in the coil.

[0003] The cooling towers of the prior art, whether closed cooling towers or open cooling towers, have the following defects: first, the existing cooling towers form a water circulation refrigeration method between the cooling tower and the refrigerated device, and the cooling water in the tower adopts a one-way non-circulating refrigeration method, so the heat exchange effect is not good, the heat exchange efficiency is not high, and some cooling towers even waste water resources; second, the adaptability to variable flow of circulating water is poor. Once the flow of circulating water is very small, the circulating water will be unevenly distributed, so that the circulating water cannot be evenly distributed in the water-spraying filler, thereby reducing the heat exchange efficiency. Summary of the invention

[0004] The embodiment of the present application provides an open and closed hybrid self-circulating refrigeration type cooling tower, which is used to greatly improve the efficiency of heat exchange, has the characteristics of water saving and energy saving, can effectively save the electrical investment of the system, and has low system operation cost and maintenance cost.

[0005] The embodiment of the present application provides an open-close hybrid self-circulating refrigeration type cooling tower, comprising:

[0006] A cooling tower body 8, wherein a water sprinkling mechanism 10 and a water sprinkling filling layer 11 are arranged in the cooling tower body 8, and the water sprinkling filling layer 11 is located below the water sprinkling mechanism 10; an air inlet is arranged on one side wall of the cooling tower body 8, and the lower part of the other side wall of the cooling tower body 8 opposite to the air inlet is tightly connected to a closed box 6 of an open and close hybrid self-circulating refrigeration module;

[0007] A water collecting tank 5 is located at the bottom of the cooling tower body 8;

[0008] Open and closed hybrid self-circulating refrigeration module, including:

[0009] A closed box 6, which forms a closed space based on the cooling tower body 8, and the bottom of the closed box 6 is open and is in closed communication with the water collecting tank 5;

[0010] The surface cooler 2 is arranged toward the air inlet and connected to the self-circulating water pump 1 so that the water in the water collection tank 5 is introduced into the surface cooler 2 based on the self-circulating water pump 1, and the water outlet of the surface cooler 2 is connected to the self-circulating water spraying mechanism 3;

[0011] The self-circulating water sprinkling mechanism 3 is connected to the self-circulating water sprinkling filler assembly 4. One side of the self-circulating water sprinkling filler assembly 4 is arranged toward the air inlet, and the water outlet of the self-circulating water sprinkling filler assembly 4 is connected to the water collecting tank 5 to form a cooling cycle.

[0012] Optionally, a guide groove 12 is provided in the cooling tower body 8 below the water spraying filler layer 11, and the circulating water flowing out of the water spraying filler layer 11 falls downward into the guide groove 12, and the guide groove 12 guides the circulating water into the water distribution tray of the self-circulating water spraying mechanism 3.

[0013] Optionally, the water spraying mechanism 10 includes:

[0014] The water distribution bucket 101 has a plurality of water outlet holes 10 and two air guide pipes 125 distributed on its bottom surface. The air guide pipes 125 penetrate the bottom surface of the water distribution bucket 101 and are fixed to the bottom surface of the water distribution bucket 101.

[0015] The water outlet flow regulating mechanism of the water distribution bucket includes an elastic deformable body 106 and an extrusion barrel 107. The elastic deformable body 106 includes distributed water flow channels 9 corresponding to and connected with the water outlet holes 108 on the water distribution bucket 101. The bottom surface of the extrusion barrel 107 is provided with water flow holes 110 corresponding to and connected with the water flow channels 9. The bottom surface of the water distribution bucket 101 extends into the extrusion barrel 107, and the elastic deformable body 106 is located between the bottom surface of the water distribution bucket and the bottom surface of the extrusion barrel.

[0016] Optionally, the air guide tube 125 passes through the elastic deformation body 106 and the extrusion barrel 107, and is slidably connected to a through hole on the bottom of the extrusion barrel 107;

[0017] The water sprinkling mechanism 10 also includes a driving device, which includes two electric push rods 102 located on both sides of the extrusion barrel 107 , the push rod ends of the two electric push rods 102 are respectively connected to the push-pull cross rod 113 , and the two push-pull cross rods 113 are fixedly connected to both sides of the extrusion barrel 107 .

[0018] Optionally, a liquid level sensor 103 and a liquid surface sensor 104 are also installed on the side wall of the water distribution bucket 101 , and the liquid level sensor 103 and the liquid surface sensor 104 are both electrically connected to the controller 105 .

[0019] Optionally, the water outlet hole 108 on the lower surface of the bottom of the water distribution bucket 101 is provided with a lower tubular water guide joint 111 communicating therewith;

[0020] The water flow hole 110 on the upper surface of the bottom of the extrusion barrel 107 is provided with an upper tubular water guide joint 112 communicating with the water flow hole;

[0021] The lower tubular water guide joint 111 is inserted into the upper end of the water flow channel 109 of the elastic deformation body 106 , and the upper tubular water guide joint 112 is inserted into the lower end of the water flow channel 109 of the elastic deformation body 106 .

[0022] Optionally, it also includes a main fan 9 and a self-circulating refrigeration fan 7;

[0023] The main fan 9 is arranged above the cooling tower body 8 and the water spraying mechanism 10;

[0024] The self-circulating refrigeration fan 7 is arranged at an exhaust port of a side wall formed by the closed box 6 and the other side of the self-circulating water sprinkling filler assembly 4 .

[0025] Optionally, the surface cooler 2 is a circuitous structure formed by bending a copper tube.

[0026] Optionally, a water collector 13 is further provided between the main fan 9 and the water spraying mechanism 10 .

[0027] The open and closed hybrid self-circulating refrigeration type cooling tower of the embodiment of the present application can greatly improve the efficiency of heat exchange, has the characteristics of water saving and energy saving, can effectively save the electrical investment of the system, and has low system operation cost and maintenance cost.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0030] Figure 1 The overall structure of the open and close hybrid self-circulating refrigeration cooling tower of the embodiment of the present application is schematically shown;

[0031] Figure 2 The figure is a schematic diagram of the structure of the water spraying mechanism according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] The present application embodiment provides an open-close hybrid self-circulating refrigeration type cooling tower, such as Figure 1 As shown, including:

[0034] A cooling tower body 8, wherein a water sprinkling mechanism 10 and a water sprinkling packing layer 11 are arranged in the cooling tower body 8, wherein the water sprinkling packing layer 11 is located below the water sprinkling mechanism 10; an air inlet is arranged on one side wall of the cooling tower body 8, and the lower part of the other side wall of the cooling tower body 8 opposite to the air inlet is tightly connected to the closed box 6 of the open and close hybrid self-circulating refrigeration module. In a specific example, a circulating water inlet is arranged on one side of the upper part of the cooling tower body 8, and the circulating water inlet is connected to the water sprinkling mechanism 10.

[0035] The water collecting tank 5 is located at the bottom of the cooling tower body 8, and a circulating water outlet is provided on the side wall of the water collecting tank 5.

[0036] Open and closed hybrid self-circulating refrigeration module, including:

[0037] A closed box 6, which forms a closed space based on the cooling tower body 8, and the bottom of the closed box 6 is open and is in closed communication with the water collecting tank 5;

[0038] The surface cooler 2 is arranged toward the air inlet and connected to the self-circulating water pump 1 so that the water in the water collection tank 5 is introduced into the surface cooler 2 based on the self-circulating water pump 1, and the water outlet of the surface cooler 2 is connected to the self-circulating water spraying mechanism 3;

[0039] The self-circulating water spraying mechanism 3 is connected to the self-circulating water spraying filler assembly 4. One side of the self-circulating water spraying filler assembly 4 is arranged toward the air inlet, and the water outlet of the self-circulating water spraying filler assembly 4 is connected to the water collection tank 5 to form a cooling cycle. Under the action of the self-circulating water pump 1, the circulating water in the water collection tank 5 flows back to the water collection tank 5 through the surface cooler 2, the self-circulating water spraying mechanism 3, and the self-circulating water spraying filler assembly 4 in sequence, so that the circulating water in the water collection tank in the ring tower can realize reciprocating heat exchange with the wind, greatly improving the efficiency of heat exchange.

[0040] In some embodiments, Figure 1 As shown, it also includes a main fan 9 and a self-circulating refrigeration fan 7;

[0041] The main fan 9 is arranged above the cooling tower body 8 and the water spraying mechanism 10;

[0042] The self-circulating refrigeration fan 7 is arranged at an exhaust port of a side wall formed by the closed box 6 and the other side of the self-circulating water-spraying filler assembly 4 .

[0043] In a specific example, the self-circulating refrigeration fan 7 is arranged at the exhaust port on the top of the closed box 6, the surface cooler 2 is arranged at the air inlet on the side wall of the closed box 6, the self-circulating water spraying mechanism 3 is located in the closed box 6 and above the self-circulating water spraying filler assembly 4, and the self-circulating water spraying filler assembly 4 is located in the closed box 6 and above the water collection tank 5. Under the action of the self-circulating refrigeration fan 7, the fresh air enters the closed box 6 after indirectly exchanging heat with the circulating water in the surface cooler 2 (closed type) at the air inlet (air inlet), and passes through the self-circulating water spraying filler assembly 4 horizontally, and directly exchanges heat with the circulating water in the self-circulating water spraying filler assembly 4 (open type) before being discharged from the exhaust port on the top of the closed box 6.

[0044] In some embodiments, a guide groove 12 is provided inside the cooling tower body 8 and below the water spraying filler layer 11, and the circulating water flowing out of the water spraying filler layer 11 falls downward into the guide groove 12, and the guide groove 12 guides the circulating water into the water distribution tray of the self-circulating water spraying mechanism 3. Specifically, a plurality of spray heads are distributed on the bottom surface of the water distribution tray, and the circulating water flowing out of the surface cooler 2 flows into the water distribution tray, and the circulating water in the water distribution tray is evenly distributed downward to the self-circulating water spraying filler assembly 4 through the spray heads. The guide groove 12 guides the circulating water into the water distribution tray of the self-circulating water spraying mechanism 3 in the open-close hybrid self-circulating refrigeration module, and then falls downward from the self-circulating water spraying mechanism 3 to the self-circulating water spraying filler assembly 4, realizing two-stage heat exchange to improve the efficiency of heat exchange.

[0045] In some specific examples, the water spraying filler layer 11 and the self-circulating water spraying filler assembly 4 can both adopt high-efficiency wet film fillers, which have a smaller footprint than conventional cooling towers and are superior to ordinary cooling towers.

[0046] In some examples, the surface cooler 2 is a meandering structure formed by bending a copper tube.

[0047] In some examples, a water collector 13 is further provided between the main fan 9 and the water spraying mechanism 10. After heat exchange, the air carries a large amount of water vapor. When the air passes through the water collector upward, the water vapor is filtered, and the condensed water droplets fall down and are recycled, which greatly saves water resources.

[0048] like Figure 2 As shown, in some embodiments, the water spraying mechanism 10 includes:

[0049] The water distribution bucket 101 has a plurality of water outlet holes 10 and two air guide pipes 125 distributed on its bottom surface. The air guide pipes 125 penetrate the bottom surface of the water distribution bucket 101 and are fixed to the bottom surface of the water distribution bucket 101.

[0050] The water outlet flow regulating mechanism of the water distribution bucket includes an elastic deformable body 106 and an extrusion barrel 107. The elastic deformable body 106 includes a distributed water flow channel 9 corresponding to and connected to the water outlet hole 108 on the water distribution bucket 101. The bottom surface of the extrusion barrel 107 is distributed with water flow holes 110 corresponding to and connected to the water flow channel 9. The bottom surface of the water distribution bucket 101 extends into the extrusion barrel 107. The elastic deformable body 106 is located between the bottom surface of the water distribution bucket and the bottom surface of the extrusion barrel. In a specific example, the elastic deformable body 106 can be made of a soft material, such as a silicone material. The elastic deformable body 106 is located between the bottom surface of the water distribution bucket and the bottom surface of the extrusion barrel. When the extrusion barrel 107 squeezes the elastic deformable body 106 upward, the water flow channel will gradually become smaller. When the extrusion barrel 107 moves upward to the maximum stroke position, the water flow channel 9 closes itself.

[0051] In some specific examples, such as Figure 2 As shown, the air guide tube 125 passes through the elastic deformation body 106 and the extrusion barrel 107, and is slidably connected with the through hole on the bottom of the extrusion barrel 107;

[0052] The water sprinkling mechanism 10 also includes a driving device, which includes two electric push rods 102 located on both sides of the extrusion barrel 107 , the push rod ends of the two electric push rods 102 are respectively connected to the push-pull cross rod 113 , and the two push-pull cross rods 113 are fixedly connected to both sides of the extrusion barrel 107 .

[0053] In some specific examples, a liquid level sensor 103 and a liquid level sensor 104 are also installed on the side wall of the water distribution bucket 101, and the liquid level sensor 103 and the liquid level sensor 104 are electrically connected to the controller 105. The liquid level height sensor is used to detect the height change of the liquid level in the water distribution bucket. In this embodiment, the liquid level height sensor adopts an ultrasonic liquid level sensor. The liquid level sensor is used to detect the position of the liquid level in the water distribution bucket to ensure that the liquid covers the bottom surface of the water distribution bucket. When the liquid level in the water distribution bucket gradually rises to the position of the liquid level sensor, the liquid level sensor transmits the information to the controller. The controller drives two electric push rods to adjust the water flow rate of the water distribution bucket through the liquid level position information and the height change of the liquid level in the water distribution bucket. Once the flow rate of circulating water is very small, it can ensure that the water in the water distribution bucket can cover the entire bottom surface of the water distribution bucket, so that the circulating water can be evenly distributed in the water sprinkling filler, thereby improving the heat exchange efficiency.

[0054] In some specific examples, the water outlet hole 108 on the lower surface of the bottom of the water distribution bucket 101 is provided with a lower tubular water guide joint 111 communicating therewith;

[0055] The water flow hole 110 on the upper surface of the bottom of the extrusion barrel 107 is provided with an upper tubular water guide joint 112 communicating with the water flow hole;

[0056] The lower tubular water guide joint 111 is inserted into the upper port of the water flow channel 109 of the elastic deformation body 106, and the upper tubular water guide joint 112 is inserted into the lower port of the water flow channel 109 of the elastic deformation body 106, thereby ensuring that the water outlet hole of the water distribution bucket, the water flow channel of the soft elastic deformation body and the water flow hole of the extrusion bucket are always connected, and there will be no situation where the holes are misaligned and blocked after the soft elastic deformation body is extruded and deformed.

[0057] The open and closed hybrid self-circulating refrigeration type cooling tower of the embodiment of the present application is designed with an open and closed hybrid self-circulating refrigeration module on one side of the cooling tower body, which can enable the circulating water in the water collection tank in the ring tower to achieve reciprocating heat exchange with the wind, greatly improving the heat exchange efficiency.

[0058] The open and closed hybrid self-circulating refrigeration cooling tower of the present application has the following characteristics:

[0059] Energy saving: Reduce the proportion of compressor air conditioning or even do not use the compressor. The unit energy efficiency ratio (COP) is as high as 10, which can save about 70% energy compared with traditional compressor refrigeration air conditioning (COP is 3).

[0060] Economical: The power distribution power of cooling and air conditioning equipment is less than that of traditional compressor refrigeration and air conditioning, which can save the electrical investment of the system, and at the same time, the system operation cost and maintenance cost are low.

[0061] It should be noted that in the various embodiments of the present application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0062] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0063] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An open and close hybrid self-circulating refrigeration type cooling tower, characterized in that: include: A cooling tower body (8), wherein a water sprinkling mechanism (10) and a water sprinkling filling layer (11) are arranged in the cooling tower body (8), and the water sprinkling filling layer (11) is located below the water sprinkling mechanism (10); an air inlet is arranged on one side wall of the cooling tower body (8), and the lower part of the other side wall of the cooling tower body 8 opposite to the air inlet is tightly connected to a closed box (6) of an open and close hybrid self-circulating refrigeration module; A water collecting tank (5) is located at the bottom of the cooling tower body (8); Open and closed hybrid self-circulating refrigeration module, including: A closed box (6), which forms a closed space based on the cooling tower body (8), the bottom of the closed box (6) is open and is in closed communication with the water collecting tank (5); A surface cooler (2) is arranged toward the air inlet and is connected to a self-circulating water pump (1) so that water from a water collection tank (5) is introduced into the surface cooler (2) based on the self-circulating water pump (1), and a water outlet of the surface cooler (2) is connected to a self-circulating water spraying mechanism (3); The self-circulating water sprinkling mechanism (3) is connected to the self-circulating water sprinkling filler assembly (4), one side of the self-circulating water sprinkling filler assembly (4) is arranged toward the air inlet, and the water outlet of the self-circulating water sprinkling filler assembly (4) is connected to the water collecting tank (5) to form a cooling cycle.

2. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 1, characterized in that: A guide groove (12) is provided inside the cooling tower body (8) and below the water spraying filler layer (11); the circulating water flowing out of the water spraying filler layer (11) falls downward into the guide groove (12); and the guide groove (12) guides the circulating water into the water distribution tray of the self-circulating water spraying mechanism (3).

3. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 2, characterized in that: The water spraying mechanism (10) comprises: A water distribution bucket (101) is provided with a plurality of water outlet holes (10) and two air guide pipes (125) on its bottom surface, wherein the air guide pipes (125) penetrate the bottom surface of the water distribution bucket (101) and are fixed to the bottom surface of the water distribution bucket (101); A water distribution bucket water flow rate regulating mechanism comprises an elastic deformable body (106) and an extrusion barrel (107); the elastic deformable body (106) comprises distributed water flow channels (9) corresponding to and in communication with a water outlet hole (108) on the water distribution bucket (101); water flow through holes (110) corresponding to and in communication with the water flow channels (9) are distributed on the bottom surface of the extrusion barrel (107); the bottom surface of the water distribution bucket (101) extends into the extrusion barrel (107); and the elastic deformable body (106) is located between the bottom surface of the water distribution bucket and the bottom surface of the extrusion barrel.

4. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 3, characterized in that: The air guide tube (125) passes through the elastic deformation body (106) and the extrusion barrel (107), and is slidably connected to a through hole on the bottom of the extrusion barrel (107); The water spraying mechanism (10) further comprises a driving device, wherein the driving device comprises two electric push rods (102) located on both sides of the extrusion barrel (107), the push rod ends of the two electric push rods (102) are respectively connected to the push-pull cross rods (113), and the two push-pull cross rods (113) are fixedly connected to both sides of the extrusion barrel (107).

5. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 4, characterized in that: A liquid level sensor (103) and a liquid surface sensor (104) are also installed on the side wall of the water distribution bucket (101), and the liquid level sensor (103) and the liquid surface sensor (104) are both electrically connected to the controller (105).

6. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 4, characterized in that: The water outlet hole (108) on the lower surface of the bottom of the water distribution bucket (101) is provided with a lower tubular water guide joint (111) communicating therewith; An upper tubular water guide joint (112) communicating with the water flow through hole (110) is provided at the water flow through hole (110) on the upper surface of the barrel bottom of the extrusion barrel (107); The lower tubular water guide joint (111) is plugged into the upper end of the water flow channel (109) of the elastic deformation body (106), and the upper tubular water guide joint (112) is plugged into the lower end of the water flow channel (109) of the elastic deformation body (106).

7. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 1, characterized in that: It also includes a main fan (9) and a self-circulating refrigeration fan (7); The main fan (9) is arranged above the cooling tower body (8) and the water spraying mechanism (10); The self-circulating refrigeration fan (7) is arranged at an air outlet of a side wall formed by the closed box (6) and the other side of the self-circulating water-spraying filler assembly (4).

8. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 1, characterized in that: The surface cooler (2) is a circuitous structure formed by bending a copper tube.

9. The open-close hybrid self-circulating refrigeration type cooling tower according to claim 1, characterized in that: A water collector (13) is also provided between the main fan (9) and the water spraying mechanism (10).

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