A dry cooling tower wet membrane device

Abstract

The application discloses a kind of dry cooling tower wet membrane devices of enabling and closing, belong to cooling tower technical field.Device includes wet membrane component, hinged member and electric hydraulic telescopic rod;Wet membrane component is set to the air inlet surface of dry cooling tower, its bottom is hinged with cooling tower frame by hinged member, remaining side is inlaid with cooling tower frame and is not fixed by connecting member;Electric hydraulic telescopic rod is set to the inside of wet membrane component in cooling tower body, one end of electric hydraulic telescopic rod is connected with cooling tower body, the other end is connected with wet membrane component;When external air temperature is higher, electric hydraulic telescopic rod contracts, pulls wet membrane component and rotates to inwards to inlaid with frame around bottom hinged shaft, wet membrane component is closed and participates in cooling heat exchange;When external air temperature is lower, wet membrane cooling is not needed, electric hydraulic telescopic rod is lengthened, and pushes wet membrane component and rotates to open, external air can directly enter tower and coil heat exchange without wet membrane, so as to reduce air inlet resistance, reduce fan energy consumption, improve system operation efficiency, realize energy saving and emission reduction.

Description

Technical Field

[0001] This invention relates to the field of cooling tower technology, and more particularly to an openable and closable hydraulic telescopic dry cooling tower wet film device. Background Technology

[0002] Cooling towers are devices used in civil and industrial buildings to reduce the temperature of cooling water. They are an essential component in modern air conditioning cooling water systems, industrial cooling water systems, and other systems.

[0003] Dry cooling towers are widely used in areas with scarce freshwater resources due to their low water consumption. To minimize the inlet air temperature, most existing designs add a wet film to the inlet surface of the dry cooling tower. The outside air temperature decreases after passing through the water-soaked wet film, thereby improving the heat exchange effect between the air inside the tower and the coils.

[0004] However, the wet film in existing dry cooling towers is usually fixed on the frame on the air inlet side of the cooling tower and cannot be opened. When the outside air temperature is low enough that heat exchange between the outside air and the coil can be carried out directly, the fixed wet film becomes a resistance component in the airflow path, which consumes additional fan pressure, increases fan energy consumption, and reduces the operating efficiency of the system.

[0005] Therefore, how to provide a wet film device for dry cooling towers that can be turned on or off according to operating conditions, and reduce air intake resistance and fan energy consumption when wet film cooling is not required, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To address the aforementioned technical problems, the present invention aims to provide an openable and closable hydraulic telescopic wet film device for dry cooling towers. When the dry cooling tower does not require the wet film to operate, the wet film can be opened, thereby reducing air intake resistance and fan energy consumption, thus improving the operating efficiency of the cooling tower and achieving energy conservation and emission reduction.

[0007] The objective of this invention is achieved through the following technical solution: A closable hydraulic telescopic wet film device for a dry cooling tower includes: a wet film assembly, a hinge, and an electro-hydraulic telescopic rod; the wet film assembly is disposed on the air inlet side of the dry cooling tower, the bottom of the wet film assembly is hinged to the frame of the dry cooling tower via the hinge, and the remaining sides of the wet film assembly are in contact with the cooling tower frame but not fixed by connectors; the electro-hydraulic telescopic rod is disposed inside the dry cooling tower body and located inside the wet film assembly, one end of the electro-hydraulic telescopic rod is connected to the tower body, and the other end is connected to the wet film assembly; the electro-hydraulic telescopic rod drives the wet film assembly to rotate around the hinge axis at the bottom by extending or retracting, so that the wet film assembly switches between a closed state where it is in contact with the cooling tower frame and an open state where it flips outward.

[0008] Furthermore, the hinge is a hinge, and the bottom edge of the wet film is hinged to the cooling tower frame via the hinge.

[0009] Furthermore, the wet film assembly includes a wet film frame and a wet film body installed within the wet film frame. The inner side of the wet film frame is provided with a lifting lug that extends into the tower body. The end of the electro-hydraulic telescopic rod is provided with a rod-through hole, and the lifting lug passes through the rod-through hole to realize the connection between the electro-hydraulic telescopic rod and the wet film assembly.

[0010] Furthermore, the lifting lug is a U-shaped steel plate lifting lug, welded to the upper middle part of the inner side of the wet film frame; the rod end of the electric hydraulic telescopic rod is provided with a double-ear joint, and the double-ear joint is hinged to the lifting lug by a pin.

[0011] Furthermore, the electro-hydraulic telescopic rods are provided in two sets, symmetrically arranged on the left and right sides of the inner tower base of the wet film frame, and the two sets of electro-hydraulic telescopic rods move synchronously.

[0012] Furthermore, the wet film rotates 70° outward from the closed state to the open state, with the bottom hinge shaft as the rotation axis.

[0013] Furthermore, a wet membrane water distribution trough is provided on the top of the wet membrane frame, and a water distribution pipe is connected to the wet membrane water distribution trough. A water distribution hole is provided at the bottom of the wet membrane water distribution trough. When the wet membrane assembly is in the closed state, the cooling tower spray pump is started and sprays water onto the wet membrane assembly through the water distribution pipe and water distribution hole.

[0014] Furthermore, a baffle and a rubber sealing gasket are provided at the contact point between the top of the wet film assembly and the cooling tower frame. When the wet film assembly is in the closed state, the top of the wet film assembly is sealed and fitted to the cooling tower frame through the rubber sealing gasket.

[0015] Furthermore, the control line of the electro-hydraulic telescopic rod is connected to the central control system, which sends group control commands to the electro-hydraulic telescopic rod according to the outside air temperature to control the opening and closing of the wet film assembly.

[0016] Compared with the prior art, one or more embodiments of the present invention may have the following advantages: When the dry cooling tower does not require the participation of the wet film, the wet film module can be opened to the outside in time, and the outside air can directly enter the tower and exchange heat with the coil without passing through the wet film. This reduces the air intake resistance, realizes the energy-saving operation of the fan, and improves the operating efficiency of the system. The rotation and opening / closing of the wet film module is powered by an electro-hydraulic telescopic rod, which provides smooth operation and reliable thrust. The electro-hydraulic telescopic rod can be connected to the system group control and can automatically respond to changes in the external temperature, thereby optimizing system operation and achieving energy saving and emission reduction. The wet film assembly is hinged to the cooling tower frame only at the bottom, while the other three sides fit freely. When closed, it achieves a seal by means of the tension of the electric hydraulic telescopic rod and the rubber sealing gasket. It has a simple structure, reliable opening and closing, and is easy to implement on existing dry cooling towers with low maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the wet film assembly in the closed state; Figure 2 This is a schematic diagram of the structure of the wet film assembly when it is in the open state; Figure 3 This is a structural diagram of the connection between the electro-hydraulic telescopic rod and the wet film assembly; Figure 4 This is a structural diagram of the top closed section of the wet film assembly.

[0018] In the diagram: 1-Cooling tower body, 2-Wet film assembly, 21-Wet film frame, 22-Wet film body, 3-Hinge shaft, 4-Electro-hydraulic telescopic rod, 41-Pole hole, 5-Lifting lug, 6-Coil, 7-Wet film water distribution trough, 8-Water distribution pipe, 9-Water distribution hole, 10-Baffle, 11-Rubber sealing gasket. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the embodiments and accompanying drawings.

[0020] like Figure 1 and Figure 2 The diagram shows an openable and closable hydraulic telescopic wet film device for a dry cooling tower, comprising a wet film assembly 2, a hinge, and an electro-hydraulic telescopic rod 4. The wet film assembly 2 is located on the air inlet side of the dry cooling tower. The bottom of the wet film assembly 2 is hinged to the frame of the cooling tower body 1 via the hinge. The other three sides of the wet film assembly 2 are attached to the cooling tower frame but not fixed by connecting parts, allowing the wet film assembly 2 to rotate around the hinge axis at the bottom. The electro-hydraulic telescopic rod 4 is located inside the tower, inside the wet film assembly 2, and installed above the tower base. One end of the electro-hydraulic telescopic rod 4 is connected to the tower body 1, and the other end is connected to the wet film assembly 2. The thrust and pull required for the rotation of the wet film assembly 2 are provided by the electro-hydraulic telescopic rod 4. A coil 6 is installed inside the tower, and a fan is installed at the top of the tower body 1. Outside air enters the tower from the air inlet side, exchanges heat with the coil 6, and is then discharged from the top of the tower.

[0021] The hinge is a hinge with one side fixedly connected to the cooling tower frame and the other side fixedly connected to the bottom of the wet film assembly 2. The wet film assembly 2 can rotate around the hinge axis 3 of the hinge.

[0022] like Figure 3As shown, the wet film assembly 2 includes a wet film frame 21 and a wet film body 22 installed within the wet film frame 21. The wet film frame 21 is a steel frame. A lifting lug 5 extending into the tower is provided on the inner side of the wet film frame 21. A through-hole 41 is pre-drilled at the end of the electro-hydraulic telescopic rod 4, through which the lifting lug 5 passes, thereby connecting the electro-hydraulic telescopic rod 4 to the wet film assembly 2. When the electro-hydraulic telescopic rod 4 extends or retracts, it transmits thrust or pull force to the wet film assembly 2 through the lifting lug 5, causing the wet film assembly 2 to rotate around the hinge shaft 3 at the bottom.

[0023] The lifting lug 5 is a U-shaped steel plate lifting lug, welded to the upper middle part of the inner side of the wet film frame; the rod end of the electric hydraulic telescopic rod 4 is provided with a double-ear joint, and the double-ear joint is hinged to the lifting lug 5 by a pin.

[0024] The electric hydraulic telescopic rod 4 is provided in two sets, symmetrically arranged on the left and right sides of the inner tower base of the wet film frame 21, and the two sets of electric hydraulic telescopic rods move synchronously.

[0025] like Figure 4 As shown, a wet film distribution trough 7 is provided on the top of the cooling tower frame, and a water distribution pipe 8 is connected to the wet film distribution trough 7. Several water distribution holes 9 are opened at the bottom of the wet film distribution trough 7. When the wet film assembly 2 is in the closed state, it is located below the water distribution holes 9. After the spray pump of the dry cooling tower is started, the spray water enters the wet film distribution trough 7 through the water distribution pipe 8, flows out evenly from the water distribution holes 9, and wets the wet film body 22 from top to bottom. A baffle 10 and a rubber sealing gasket 11 are provided at the contact point between the wet film assembly 2 and the cooling tower frame. When the wet film assembly 2 is in the closed state, it is sealed and fitted to the cooling tower frame through the rubber sealing gasket 11 to prevent short circuit of air intake.

[0026] The working principle of this device is as follows: Initially, the electro-hydraulic telescopic rod 4 is in the retracted state, and the wet film assembly 2 is tightly attached to the cooling tower frame. At this time, the wet film assembly 2 is in the closed state (e.g., Figure 1 (As shown). In this state, the spray pump of the dry cooling tower starts and sprays water onto the wet film body 22. Outside air enters the cooling tower after being cooled by the water-soaked wet film body 22 and exchanges heat with the coil 6.

[0027] When the outside air temperature is low and cooling with a wet membrane is not required, the electro-hydraulic telescopic rod 4 extends. The thrust of the electro-hydraulic telescopic rod 4 is transmitted to the wet membrane assembly 2 through the lifting lug 5, causing the wet membrane assembly 2 to rotate outward about the bottom hinge shaft 3 as the rotation axis. When the wet membrane assembly 2 rotates outward by 70° from the closed position, the electro-hydraulic telescopic rod 4 stops extending, and at this time the wet membrane assembly 2 is in the open state (e.g., Figure 2 (As shown). After the wet film assembly 2 is turned on, outside air can directly reach the coil 6 inside the tower for heat exchange without passing through the wet film assembly 2, thereby reducing air intake resistance, reducing fan energy consumption, and improving system operating efficiency.

[0028] When the wet film assembly 2 needs to be put into use, the electric hydraulic telescopic rod 4 retracts, and the pulling force is applied to the wet film frame 21 through the lifting lug 5, which drives the wet film assembly 2 to rotate inward about the bottom hinge shaft 3 as the rotation axis until the wet film assembly 2 and the cooling tower frame are completely closed. At this time, the wet film assembly 2 re-participates in heat exchange.

[0029] In this embodiment, the control line of the electro-hydraulic telescopic rod 4 is connected to the central control system to receive group control commands. The central control system can automatically control the extension and retraction of the electro-hydraulic telescopic rod 4 according to changes in the outside air temperature, realizing automatic response to the opening and closing of the wet film assembly 2, thereby optimizing system operation.

[0030] While the embodiments disclosed in this invention are as described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in form and detail of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A closable wet film device for a dry cooling tower, characterized in that, The system includes a wet film assembly, a hinge, and an electro-hydraulic telescopic rod. The wet film assembly is disposed on the air inlet side of the dry cooling tower. The bottom of the wet film assembly is hinged to the frame of the dry cooling tower via the hinge. The remaining sides of the wet film assembly are in contact with the cooling tower frame but are not fixed by connectors. The electro-hydraulic telescopic rod is disposed inside the dry cooling tower body and located inside the wet film assembly. One end of the electro-hydraulic telescopic rod is connected to the tower body, and the other end is connected to the wet film assembly. The electro-hydraulic telescopic rod drives the wet film assembly to rotate around the hinge axis at the bottom by extending or retracting, so that the wet film assembly switches between a closed state where it is in contact with the cooling tower frame and an open state where it flips outward.

2. The openable and closable dry cooling tower wet film device according to claim 1, characterized in that, The hinge is a hinge, and the bottom edge of the wet film is hinged to the cooling tower frame via the hinge.

3. The openable and closable dry cooling tower wet film device according to claim 1, characterized in that, The wet film assembly includes a wet film frame and a wet film body installed within the wet film frame. The inner side of the wet film frame is provided with a lifting lug that extends into the tower body. The end of the electro-hydraulic telescopic rod is provided with a rod-through hole, and the lifting lug passes through the rod-through hole to realize the connection between the electro-hydraulic telescopic rod and the wet film assembly.

4. The openable and closable dry cooling tower wet film device according to claim 1, characterized in that, The lifting lug is a U-shaped steel plate lifting lug, welded to the upper middle part of the inner side of the wet film frame; the end of the electric hydraulic telescopic rod is provided with a double-ear joint, and the double-ear joint is hinged to the lifting lug by a pin.

5. The openable and closable dry cooling tower wet film device according to claim 3, characterized in that, The electro-hydraulic telescopic rods are provided in two sets, symmetrically arranged on the left and right sides of the inner tower base of the wet film frame, and the two sets of electro-hydraulic telescopic rods move synchronously.

6. The openable and closable dry cooling tower wet film device according to claim 1, characterized in that, The wet membrane rotates 70° outward from the closed state to the open state, with the bottom hinge shaft as the rotation axis.

7. The openable and closable dry cooling tower wet film device according to claim 1, characterized in that, The top of the wet film frame is provided with a wet film water distribution trough, which is connected to a water distribution pipe. The bottom of the wet film water distribution trough is provided with a water distribution hole. When the wet film assembly is in the closed state, the cooling tower spray pump starts and sprays water onto the wet film assembly through the water distribution pipe and water distribution hole.

8. The openable and closable dry cooling tower wet film device according to claim 7, characterized in that, A baffle and a rubber sealing gasket are provided at the contact point between the top of the wet film assembly and the cooling tower frame. When the wet film assembly is in the closed state, the top of the wet film assembly is sealed and attached to the cooling tower frame through the rubber sealing gasket.

9. The openable and closable dry cooling tower wet film device according to claim 1, characterized in that, The control line of the electro-hydraulic telescopic pole is connected to the central control system. The central control system sends group control commands to the electro-hydraulic telescopic pole according to the outside air temperature to control the opening and closing of the wet film assembly.

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