Multistage heat exchange type high-efficiency evaporative condenser

Abstract

The application discloses a multi-stage heat exchange type high-efficiency evaporative condenser and belongs to the technical field of condensers. The condenser comprises a water collecting base and a box body. A composite heat exchange module is arranged in the box body. A spraying module for cooling the composite heat exchange module is arranged above the box body. An axial flow air cooling module for air cooling heat exchange of the composite heat exchange module is arranged in the box body. A high-frequency cleaning module for cleaning the composite heat exchange module is arranged in the water collecting base. The whole composite heat exchange module is slowly rotated like a rotating door by adjusting a motor, so that the composite pipe bodies of each group are periodically rotated to a working area and a lowermost cleaning area. When the pipe body rotates to the bottom cleaning position, the fins on the surface of the pipe body are extruded with a fixed arc-shaped cleaning base plate, so that the hard scale condensed on the pipe wall is effectively extruded, broken and crushed. In combination with an ultrasonic generator arranged in the cleaning area, the composite pipe body after mechanical descaling is deeply and finely cleaned.

Description

Technical Field

[0001] This invention relates to the field of condenser technology, and more particularly to a multi-stage heat exchange type high-efficiency evaporative condenser. Background Technology

[0002] An evaporative condenser is a heat exchange device that uses the heat absorption of water evaporation to cool the refrigerant or other process fluids inside the condenser tubes. It utilizes the large amount of latent heat absorbed during water evaporation to efficiently remove heat from the fluid inside the tubes. Compared to simple air cooling or water cooling, it combines the advantages of both, significantly improving heat exchange efficiency and greatly reducing water consumption.

[0003] In daily use, during the continuous circulation and evaporation of cooling water in an evaporative condenser, the concentration of minerals (such as calcium and magnesium) in the water becomes increasingly higher, eventually exceeding their solubility. These minerals precipitate and deposit on the surface of the heat exchange tubes and inside the pipes, forming hard scale. Scale has an extremely low thermal conductivity, which severely hinders heat transfer, leading to increased condensing pressure, increased compressor power consumption, and decreased cooling capacity, which seriously restricts the use of the condenser. Based on this, a multi-stage heat exchange type high-efficiency evaporative condenser is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a multi-stage heat exchange type high-efficiency evaporative condenser.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage heat exchange type high-efficiency evaporative condenser includes a water collection base and a housing. A composite heat exchange module is installed inside the housing. A spray module for cooling the composite heat exchange module is installed above the housing. An axial flow air-cooling module for air-cooling heat exchange of the composite heat exchange module is installed inside the housing. A high-frequency cleaning module for periodically cleaning the composite heat exchange module is installed inside the water collection base.

[0007] The composite heat exchange module includes two inlet and outlet water tanks located at one end of the housing. A rotating end plate is connected to the inlet and outlet water tanks through an active control component. Multiple composite end plates are evenly arranged on the rotating end plates. Multiple supporting inner tubes are rotatably arranged on the composite end plates. Composite tubes are arranged at the ends of the supporting inner tubes. The other ends of the composite tubes are connected to each other through a dynamic communication device.

[0008] As a preferred embodiment, the composite tube body includes an inner corrosion-resistant tube located inside, a heat exchange tube body disposed outside the inner corrosion-resistant tube body, and a plurality of finned ribs disposed alternately on the heat exchange tube body, with an extruded inner liner disposed at the inner end of the finned ribs.

[0009] As a preferred scheme, the active control assembly comprises an inner water isolation disc rotatably connected with the inner wall of the water inlet and outlet tank body through a fixed inner ring, and an inner sealing disc is rotatably connected with the inner water isolation disc at a position corresponding to the composite end disc;

[0010] An adjusting motor is arranged in the water inlet and outlet tank body, and the output end of the adjusting motor is fixedly connected with the inner water isolation disc and the rotating end plate.

[0011] As a preferred scheme, a self-rotation gear is fixedly connected with the outer lateral wall of the supporting inner pipe body, an inner fixed gear ring is arranged on the fixed inner ring and is in meshing connection with the self-rotation gear, a self-rotation gear ring is fixedly connected with the outer lateral wall of the composite end disc, and an outer fixed gear ring is arranged on the fixed inner ring and is in meshing connection with the self-rotation gear ring.

[0012] As a preferred scheme, the dynamic communication device comprises two communication water changing discs arranged on the tank body, a connecting end plate is rotatably arranged on the communication water changing disc, a plurality of connecting end discs are uniformly rotatably arranged on the connecting end plate, the end portion of the composite pipe body is fixedly arranged on the connecting end disc, a water changing opening is arranged at the connecting position, a communication opening corresponding to the water changing opening is arranged on the communication water changing disc, and the two communication water changing discs are in communication with each other through a laminated pipeline.

[0013] As a preferred scheme, the high-frequency cleaning module comprises an arc-shaped cleaning base disc arranged in the water collecting base, and an ultrasonic generator is arranged on the arc-shaped cleaning base disc.

[0014] As a preferred scheme, the axial flow air cooling module comprises an air outlet opening arranged on the top of the tank body, the air outlet opening is directly above the supporting inner pipe body, an axial flow fan is arranged in the air outlet opening, and an air inlet opening is arranged on the side of the tank body close to the dynamic communication device.

[0015] As a preferred scheme, the spraying module is provided with two groups and is arranged directly above the composite pipe bodies on the two sides.

[0016] Compared with the prior art, the application has the following beneficial effects:

[0017] 1、The whole composite heat exchange module can slowly rotate like a "revolving door" through the driving of the adjusting motor, so that the composite pipe bodies of each group are periodically rotated to the working area and the cleaning area at the lowermost position, the fins and ribs on the surface of the pipe body are pressed against the fixed arc-shaped cleaning base disc when the pipe body rotates to the bottom cleaning position, the hard scale condensed on the outer wall of the pipe body can be effectively pressed, broken and crushed, the ultrasonic generator arranged in the cleaning area is combined to perform deep and fine cleaning on the composite pipe body after mechanical descaling, residual scale is completely removed, the cleaning effect is ensured, and physical automatic descaling without chemical agents is realized.

[0018] 2、The finned rib is moved inwardly to link the extrusion inner lining part, the flexible corrosion-resistant inner tube is extruded and deformed, the soft blockage in the pipe is disturbed and cleaned, and the internal flow channel is kept unobstructed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A three-dimensional structure schematic diagram of a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application.

[0020] Figure 2 An assembly structure schematic diagram of a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application.

[0021] Figure 3 A combination structure schematic diagram of a composite heat exchange module in a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application. Figure 1

[0022] Figure 4 Figure 3 An enlarged structure schematic diagram of A in the figure is provided for the present application.

[0023] Figure 5 A combination structure schematic diagram of a composite heat exchange module in a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application. Figure 2

[0024] Figure 6 A sectional structure schematic diagram of a water inlet and outlet tank body in a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application.

[0025] Figure 7 A structure schematic diagram of a composite pipe body in a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application.

[0026] Figure 8 A position relationship distribution schematic diagram of a composite pipe body, a composite end disc and a rotating end plate in a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application.

[0027] Figure 9 A frame diagram of a multi-stage heat exchange type high-efficiency evaporative condenser is provided for the present application.

[0028] ​​​In the figure: 1, water collecting base; 2, box body; 3, spraying module; 4, water inlet and outlet box body; 5, rotating end plate; 6, composite end disc; 7, supporting inner tube body; 8, composite tube body; 801, corrosion-resistant inner tube; 802, heat exchange tube body; 803, fin strip; 804, extruded inner lining; 9, fixed inner ring; 10, inner water isolation disc; 11, inner sealing disc; 12, self-rotating gear; 13, inner fixed tooth ring; 14, self-rotating tooth ring; 15, outer fixed tooth ring; 16, communication water exchange disc; 17, connecting end plate; 18, connecting end disc; 19, laminated pipeline; 20, arc-shaped cleaning bottom disc; 21, air outlet; 22, air inlet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the devices or elements referred to in a particular orientation, constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment, refer to Figures 1 to 9 A multi-stage heat exchange type high-efficiency evaporative condenser, comprising a water collecting base 1 and a box body 2, a composite heat exchange module is arranged in the box body 2, the composite heat exchange module comprises two water inlet and outlet box bodies 4 arranged at one end of the box body 2, the water inlet and outlet box bodies 4 are connected with rotating end plates 5 through active control assemblies, and an external pipeline is arranged above the water inlet and outlet box bodies 4 and connected with the cold water and hot water pipelines of the system respectively;

[0033] Further, the active control assembly comprises an inner water isolation disc 10 rotatably connected with the inner wall of the water inlet and outlet tank body 4 through a fixed inner ring 9, wherein the fixed inner ring 9 is fixedly connected with the inner wall of the water inlet and outlet tank body 4, and the inner water isolation disc 10 is rotatably connected with the fixed inner ring 9, so that the inner water isolation disc 10 can rotate with the water inlet and outlet tank body 4. The inner sealing disc 11 is rotatably connected with the inner water isolation disc 10 at a position corresponding to the composite end disc 6. The end portion of the support inner tube body 7 extends inwardly through the inner sealing disc 11. The inner sealing disc 11 and the composite end disc 6 can rotate synchronously. Such a structure can seal the structure of the active control assembly by the inner water isolation disc 10 and the inner sealing disc 11.

[0034] An adjusting motor is arranged in the water inlet and outlet tank body 4. The output end of the adjusting motor is fixedly connected with the inner water isolation disc 10 and the rotating end plate 5. The adjusting motor is used to drive the inner water isolation disc 10 and the rotating end plate 5 to rotate synchronously.

[0035] Further, the outer side wall of the support inner tube body 7 is fixedly connected with a self-rotation gear 12. The fixed inner ring 9 is provided with an inner fixed gear ring 13 which is meshingly connected with the self-rotation gear 12. The outer side wall of the composite end disc 6 is fixedly connected with a self-rotation gear ring 14. The fixed inner ring 9 is provided with an outer fixed gear ring 15 which is meshingly connected with the self-rotation gear ring 14.

[0036] A plurality of composite end discs 6 are uniformly arranged on the rotating end plate 5. A plurality of support inner tube bodies 7 are rotatably arranged on the composite end disc 6. The end portion of the support inner tube body 7 is provided with a composite tube body 8. Further, the composite tube body 8 comprises a corrosion-resistant inner tube 801 in the inside. A heat exchange tube body 802 is arranged outside the corrosion-resistant inner tube 801. A plurality of fin strips 803 are arranged on the heat exchange tube body 802 in a staggered manner. The inner end portion of the fin strip 803 is provided with an extrusion lining 804. The composite tube body 8 is composed of the heat exchange tube body 802 and the fin strip 803, which greatly increases the effective heat exchange area.

[0037] It should be noted that the arc-shaped cleaning bottom disc 20 is close to the outer wall of the composite tube body 8. When the composite tube body 8 is driven to rotate, the fin strip 803 arranged on the surface layer of the composite tube body 8 will be in contact with the inner wall of the arc-shaped cleaning bottom disc 20, so as to extrude the fin strip 803 and make the fin strip 803 move inwardly. When extruded, the scale originally condensed on the surface layer of the composite tube body 8 will be broken. The inward movement of the fin strip 803 will drive the extrusion lining 804 connected thereto to be internally pressed, so as to extrude and deform the flexibly arranged corrosion-resistant inner tube 801, and also clean the blockage condensed in the corrosion-resistant inner tube 801.

[0038] It should be noted that the plurality of composite pipe bodies 8 is a group of annular distribution, the annular distribution of the composite pipe body 8 provides a channel for the wind delivery, increases the contact area with the air, combines the top spray evaporation and axial flow air cooling, combines the high efficiency of water cooling and the water saving advantage of air cooling, realizes the extremely high heat exchange efficiency.

[0039] The other end of the composite pipe body 8 is connected to each other through a dynamic communication device, the dynamic communication device includes two communication water changing discs 16 arranged on the box body 2, the connecting end plate 17 is arranged on the communication water changing disc 16, a plurality of connecting end discs 18 are uniformly arranged on the connecting end plate 17, the end of the composite pipe body 8 is fixedly arranged on the connecting end disc 18, and the connecting part is provided with a water changing port, the communication water changing disc 16 is provided with a communication port corresponding to the water changing port, and the two communication water changing discs 16 are communicated with each other through the laminated pipeline 19.

[0040] It should be noted that the bottom of the communication water changing disc 16 is in a closed state, so the group of composite pipe bodies 8 at the lowermost position is in a non-working state, so when the groups of composite pipe bodies 8 above are working, the group of composite pipe bodies 8 at the bottom is in a continuous cleaning state of the high-frequency cleaning module.

[0041] It is worth noting that the middle positions of the communication water changing disc 16 and the connecting end plate 17 are hollow, which improves the ventilation area of the air inlet channel.

[0042] The box body 2 is provided with a spray module 3 for cooling the composite heat exchange module, further, the spray module 3 is provided with two groups, which are arranged above the composite pipe bodies 8 on both sides.

[0043] The box body 2 is provided with an axial flow air cooling module for air cooling heat exchange of the composite heat exchange module, further, the axial flow air cooling module includes an air outlet 21 arranged on the top of the box body 2, the air outlet 21 is arranged above the supporting inner pipe body 7, the air outlet 21 is provided with an axial flow fan, and the box body 2 is provided with an air inlet 22 close to the dynamic communication device.

[0044] The water collecting base 1 is provided with a high-frequency cleaning module for periodic cleaning of the composite heat exchange module, the high-frequency cleaning module includes an arc-shaped cleaning base plate 20 arranged in the water collecting base 1, the arc-shaped cleaning base plate 20 is soaked in the circulating water in the water collecting base 1, and the arc-shaped cleaning base plate 20 is provided with an ultrasonic generator, the ultrasonic generator is a prior art, which can realize ultrasonic cleaning of a group of composite pipe bodies 8 at the arc-shaped cleaning base plate 20, so as to ensure effective cleaning of the scale on the composite pipe body 8.

[0045] The high-efficiency evaporative condenser works, and the medium is transported through the inlet and outlet water tank body 4 on one side, and the medium is transported under the action of the conveying pressure and enters the composite pipe body 8 through the support inner pipe body 7. Under the action of the spray module 3, the circulating water is continuously sprayed on the surface of the composite pipe body 8. At this time, the medium in the inside is effectively cooled under the action of the spray, and the steam is quickly volatilized under the action of the axial flow fan, and the heat exchange effect is improved.

[0046] When the evaporative condenser runs to the predetermined time, scale is generated on the composite pipe body 8 located on the upper layer. At this time, the control adjustment motor drives the rotating end plate 5 to rotate, so that the plurality of composite pipe bodies 8 connected through the composite end disc 6 are rotated, so that the position of the composite pipe body 8 located on the uppermost is changed, and the position of the composite pipe body 8 located on the uppermost directly contacting the circulating water is gradually adjusted. When the rotating end plate 5 is driven to rotate, the composite end disc 6 is rotated under the action of the self-rotating gear ring 14 under the action of the outer fixed gear ring 15, so that the position of the composite pipe body 8 and the position of the composite pipe body 8 located on the uppermost directly contacting the circulating water are gradually changed.

[0047] In this process, the support inner pipe body 7 drives the composite pipe body 8 to rotate under the action of the inner fixed gear ring 13 and the self-rotating gear 12. At this time, the composite pipe body 8 located on the lowermost makes the fin rib 803 provided on the surface layer of the composite pipe body 8 contact the inner wall of the arc-shaped cleaning bottom disc 20, so that the fin rib 803 is extruded and moves inward. When extruded, the scale originally condensed on the surface layer of the composite pipe body 8 is broken, and the fin rib 803 moves inward, drives the extrusion inner lining 804 connected therein to be internally pressed, extrudes the corrosion-resistant inner pipe 801 provided with flexibility, deforms, and can also clean the blockage condensed in the corrosion-resistant inner pipe 801.

[0048] When the composite pipe body 8 needs to be removed and moves to the bottom (in a non-working state), it directly contacts the arc-shaped cleaning bottom disc 20 below. At this time, the high-frequency cleaning module provided at the arc-shaped cleaning bottom disc 20 can realize ultrasonic cleaning of the scale on the broken composite pipe body 8, so that the evaporative condenser is always in an efficient working state.

[0049] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-stage heat exchange type high-efficiency evaporative condenser, comprising a water collection base (1) and a housing (2), characterized in that, The box (2) is equipped with a composite heat exchange module, and a spray module (3) is provided above the box (2) to cool down the composite heat exchange module. An axial flow air-cooling module is provided inside the box (2) to perform air-cooled heat exchange on the composite heat exchange module. A high-frequency cleaning module is provided inside the water collection base (1) to perform periodic cleaning on the composite heat exchange module. The composite heat exchange module includes two inlet and outlet water tanks (4) located at one end of the housing (2). A rotating end plate (5) is connected to the inlet and outlet water tanks (4) through an active control component. Multiple composite end plates (6) are evenly arranged on the rotating end plate (5). Multiple supporting inner tubes (7) are rotatably arranged on the composite end plates (6). A composite tube (8) is provided at the end of the supporting inner tube (7). The other end of the composite tube (8) is connected to each other through a dynamic communication device. The composite tube body (8) includes a flexible corrosion-resistant inner tube (801) located inside, and a heat exchange tube body (802) is provided outside the corrosion-resistant inner tube (801). Multiple finned ribs (803) are arranged alternately on the heat exchange tube body (802), and an extruded inner liner (804) is provided at the inner end of the finned ribs (803). The active control component includes an inner water-separating plate (10) that is rotatably connected to the inner wall of the inlet / outlet water tank (4) via a fixed inner ring (9); a self-rotating gear (12) is fixedly connected to the outer wall of the supporting inner pipe (7); an inner fixed gear ring (13) that meshes with the self-rotating gear (12) is provided on the fixed inner ring (9); a self-rotating gear ring (14) is fixedly connected to the outer wall of the composite end plate (6); and an outer fixed gear ring (15) that meshes with the self-rotating gear ring (14) is provided on the fixed inner ring (9). The high-frequency cleaning module includes an arc-shaped cleaning chassis (20) set in the water collection base (1). Under the action of the inner fixed gear ring (13) and the self-rotating gear (12), the supporting inner tube (7) will drive the composite tube (8) to rotate. At this time, the composite tube (8) at the bottom will cause the fin ribs (803) set on the surface of the composite tube (8) to contact the inner wall of the arc-shaped cleaning chassis (20). An ultrasonic generator is set on the arc-shaped cleaning chassis (20).

2. The multi-stage heat exchange type high-efficiency evaporative condenser according to claim 1, characterized in that, An inner sealing disc (11) is rotatably connected to the inner water-blocking disc (10) at the position corresponding to the composite end disc (6), and the end of the supporting inner tube (7) extends inward through the inner sealing disc (11); An adjusting motor is installed inside the inlet and outlet water tank (4), and the output end of the adjusting motor is fixedly connected to the inner water baffle (10) and the rotating end plate (5).

3. The multi-stage heat exchange type high-efficiency evaporative condenser according to claim 1, characterized in that, The dynamic communication device includes two communication water exchange trays (16) set on the box (2). A connecting end plate (17) is rotatably set on the communication water exchange tray (16). Multiple connecting end plates (18) are evenly rotatably set on the connecting end plate (17). The end of the composite pipe (8) is fixedly set on the connecting end plate (18), and a water exchange port is set at the connection part. A communication port corresponding to the water exchange port is opened on the communication water exchange tray (16). The two communication water exchange trays (16) are interconnected through a stacked pipeline (19).

4. The multi-stage heat exchange type high-efficiency evaporative condenser according to claim 1, characterized in that, The axial flow air-cooled module includes an air outlet (21) opened on the top of the box (2), the air outlet (21) is located directly above the supporting inner tube (7), an axial flow fan is installed in the air outlet (21), and an air inlet (22) is opened on the side of the box (2) near the dynamic communication device.

5. A multi-stage heat exchange type high-efficiency evaporative condenser according to claim 1, characterized in that, The spray module (3) is provided in two sets, which are respectively located directly above the composite pipe body (8) on both sides.

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