Anti-freezing device for water filling of indirect air cooling tower

Abstract

The utility model relates to the field of water filling anti-freezing devices for indirect air cooling towers, in particular to an anti-freezing device for water filling of an indirect air cooling tower. A water inlet inner pipe is installed on the heat exchange assembly, heat conduction rib plates are fixedly connected to the spiral inner sides of the two spiral pipes correspondingly, stirring assemblies are arranged in the two spiral pipes correspondingly, hot water in the heat preservation barrel can transfer heat to the heat conduction rib plates and the spiral pipes, and when water flows into the spiral pipes to flow, spiral blades can be driven to rotate; water entering the spiral pipe is disturbed through the rotating spiral blades, the spiral rib plates arranged on the inner wall of the water outlet inner pipe disturb the water flow again so as to keep the flowability of the water flow, and after the environment temperature rises, the heat preservation curtain is folded upwards so that the side wall of the heat preservation barrel can be leaked out. Heat of hot water in the heat preservation barrel can be dissipated outwards through the T-shaped heat conduction plate, the hot water can be further cooled through the temperature of supplementary water, the temperature of cooling water is reduced again, and the cooling effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of water-filled antifreeze devices for indirect air-cooled towers, specifically an antifreeze device for water-filled indirect air-cooled towers. Background Technology

[0002] An indirect air-cooled tower is a device that uses natural ventilation to achieve heat exchange for cooling. It mainly cools the hot water sent from the condenser in a thermal power plant and then sends it back to the condenser in the thermal power plant to form a circulation loop. Compared with the traditional wet cooling method, it can achieve water saving, strong environmental adaptability and high operational stability. In order to ensure the heat exchange efficiency of the indirect air-cooled tower, water needs to be added to the cooling tower regularly or as needed to replenish the cooling water and ensure the cooling effect.

[0003] Currently, during the water filling process of air-cooled towers in some high-altitude and cold regions, the water in the pipes freezes due to the low temperature, which can easily cause blockages in the pipes or facilities. Furthermore, the frozen water in the pipes expands, which can easily cause the pipes to rupture, thus affecting the entire cooling process. Therefore, an antifreeze device for water filling of indirect air-cooled towers is proposed to address the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and address the problems existing in existing technologies, this utility model proposes an antifreeze device for water filling of indirect air-cooled towers.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The antifreeze device for water filling of indirect air-cooled towers according to this utility model includes an insulation tank; a heat exchange component is provided inside the insulation tank; a water supply pipe is installed on the insulation tank; an inlet water pipe is installed on the heat exchange component; the inlet water pipe is coaxially arranged inside the water supply pipe; an outlet water pipe is installed below the heat exchange component; and a drain pipe is installed at the bottom of the insulation tank; the drain pipe is coaxially arranged outside the outlet water pipe.

[0006] The heat exchange assembly includes two spiral tubes arranged in a spiral configuration. A heat-conducting fin is fixed to the inner side of each spiral tube, and an agitation assembly is provided inside each spiral tube.

[0007] The outer wall of the insulated barrel is equipped with an insulation component for heat preservation.

[0008] Preferably, the agitation assembly includes a fixed frame, on which a rotating shaft is rotatably mounted, and on which spiral blades are provided.

[0009] Preferably, the inner outlet pipe is provided with a spiral rib along the conveying direction, the end of the inner inlet pipe extends outside the water delivery pipe, and the end of the inner outlet pipe extends outside the drain pipe.

[0010] Preferably, the end of the inner water inlet pipe located inside the water delivery pipe is fixedly connected to an inlet pipe, and the inlet pipe is connected to the upper end of the two spiral pipes. The end of the inner water outlet pipe located inside the drain pipe is fixedly connected to an outlet pipe, and the outlet pipe is connected to the bottom end of the two spiral pipes.

[0011] Preferably, a T-shaped heat-conducting plate is spirally arranged on the side wall of the heat-insulating barrel, the end of the T-shaped heat-conducting plate extends into the inside of the heat-insulating barrel and is staggered between the two spiral tubes, and the vertical section of the T-shaped heat-conducting plate is attached to the outer wall of the heat-insulating barrel.

[0012] Preferably, the insulation component includes a fixing plate, which is fixed to the outer wall of the insulation barrel, and an insulation curtain is provided under the fixing plate, with an installation plate fixed to the lower end of the insulation curtain.

[0013] Preferably, a guide wheel is rotatably mounted on the fixed plate, and a lifting chain is fixedly connected to the mounting plate, with the end of the lifting chain wound around the guide wheel and set downwards.

[0014] Preferably, the water supply pipe is connected to the outlet end of the condenser in the thermal power plant, the drain pipe is connected to the inlet cooling end of the air-cooled tower, the end of the inlet inner pipe outside the insulation barrel is connected to the water filling device, and the end of the outlet inner pipe outside the insulation barrel is connected to the water filling hole of the air-cooled tower.

[0015] The advantages of this utility model are:

[0016] 1. This utility model utilizes the hot water in the insulated tank to transfer heat to the heat-conducting ribs and spiral tube, thereby heating the water inside the spiral tube. As the water flows into the spiral tube, it drives the spiral blades to rotate, which in turn disturbs the water entering the spiral tube, improving the flow of the water. The spiral ribs on the inner wall of the outlet pipe further disturb the water flow to maintain its fluidity, thus preventing the pipe from freezing due to excessively low ambient temperature during the filling process.

[0017] 2. This utility model allows the insulation curtain to be folded upwards when the ambient temperature rises, exposing the side wall of the insulation tank. The heat of the hot water inside the insulation tank is transferred to the T-shaped heat conduction plate, and the heat of the hot water inside the insulation tank is dissipated outwards through the T-shaped heat conduction plate, so as to initially cool the hot water supplied by the condenser. At the same time, during the water filling process, the temperature of the supplementary water can be used to further cool the hot water in the insulation tank, so as to further reduce the cooling water temperature and improve the cooling effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the first three-dimensional structure in this embodiment;

[0020] Figure 2 This is a cross-sectional enlarged view of the main structure of the insulated bucket in this embodiment;

[0021] Figure 3 This is an enlarged schematic diagram of the main structure of the heat exchange component in this embodiment;

[0022] Figure 4 This is a cross-sectional enlarged schematic diagram of the main structure of the heat exchange component in this embodiment;

[0023] Figure 5 This is a cross-sectional enlarged schematic diagram of the main structure of the thermal insulation component in this embodiment;

[0024] Figure 6 This is a cross-sectional enlarged schematic diagram of the main structure of the stirring component in this embodiment;

[0025] Figure 7 For this embodiment Figure 5 Enlarged schematic diagram of region A in the middle.

[0026] In the picture: 1. Insulated container;

[0027] 2. Heat exchanger assembly; 21. Spiral tube; 22. Inlet pipe; 23. Outlet pipe; 24. Heat-conducting fins;

[0028] 25. Agitator assembly; 251. Fixing frame; 252. Rotating shaft; 253. Spiral blades;

[0029] 3. Water supply pipe;

[0030] 4. Drainage pipe;

[0031] 5. Inlet water pipe;

[0032] 6. Inner water outlet pipe; 61. Spiral rib plate;

[0033] 7. Thermal insulation components; 71. Fixing plate; 72. Thermal insulation curtain; 73. Mounting plate; 74. Guide wheels; 75. Lifting chain;

[0034] 8. T-shaped heat-conducting plate. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0036] Please see Figure 1-7 As shown, an antifreeze device for water filling of an indirect air-cooled tower includes an insulated tank 1; a heat exchange component 2 is installed inside the insulated tank 1, a water supply pipe 3 is installed on the insulated tank 1, an inlet water pipe 5 is installed on the heat exchange component 2, the inlet water pipe 5 is coaxially arranged inside the water supply pipe 3, an outlet water pipe 6 is installed below the heat exchange component 2, and a drain pipe 4 is installed at the bottom of the insulated tank 1, the drain pipe 4 is coaxially arranged outside the outlet water pipe 6.

[0037] The heat exchange assembly 2 includes two spiral tubes 21 arranged in a spiral configuration. A heat-conducting fin plate 24 is fixed to the inner side of each spiral tube 21, and an agitation assembly 25 is provided inside each spiral tube 21.

[0038] The outer wall of the insulated container 1 is provided with an insulation component 7 for heat preservation.

[0039] The stirring assembly 25 includes a fixed frame 251, on which a rotating shaft 252 is rotatably mounted, and a spiral blade 253 is provided on the rotating shaft 252.

[0040] The water outlet inner pipe 6 is provided with a spiral rib plate 61 along the conveying direction, the end of the water inlet inner pipe 5 extends outside the water delivery pipe 3, and the end of the water outlet inner pipe 6 extends outside the drain pipe 4.

[0041] The end of the water inlet pipe 5 located inside the water delivery pipe 3 is fixedly connected to the water inlet pipe 22, and the water inlet pipe 22 is connected to the upper end of the two spiral pipes 21. The end of the water outlet pipe 6 located inside the drain pipe 4 is fixedly connected to the water outlet pipe 23, and the water outlet pipe 23 is connected to the bottom end of the two spiral pipes 21.

[0042] The side wall of the heat preservation barrel 1 is provided with a T-shaped heat-conducting plate 8 in a spiral shape. The end of the T-shaped heat-conducting plate 8 extends into the interior of the heat preservation barrel 1 and is staggered between the two spiral tubes 21. The vertical section of the T-shaped heat-conducting plate 8 is attached to the outer wall of the heat preservation barrel 1.

[0043] The heat insulation component 7 includes a fixing plate 71, which is fixed to the outer wall of the heat insulation barrel 1. A heat insulation curtain 72 is provided below the fixing plate 71, and an installation plate 73 is fixed to the lower end of the heat insulation curtain 72.

[0044] A guide wheel 74 is rotatably mounted on the fixed plate 71, and a lifting chain 75 is fixedly connected to the mounting plate 73. The end of the lifting chain 75 is wound around the guide wheel 74 and set downward.

[0045] The water supply pipe 3 is connected at one end to the water outlet of the condenser in the thermal power plant, the drain pipe 4 is connected at one end to the water inlet cooling end of the air-cooled tower, the end of the water inlet inner pipe 5 located outside the insulation barrel 1 is connected to the water filling device, and the end of the water outlet inner pipe 6 located outside the insulation barrel 1 is connected to the water filling hole of the air-cooled tower.

[0046] During operation, in some high-altitude and cold regions, the water in the pipes may freeze due to the low temperature during the water filling process of the air-cooled tower, which can easily cause blockage of the pipes or facilities. Furthermore, the water in the pipes will expand when frozen, which can easily cause the pipes to rupture, thus affecting the entire cooling process. In this solution, the water supply pipe 3 is connected to the outlet of the condenser in the thermal power plant, the water inlet pipe 5 is connected to the water filling equipment, the water outlet pipe 6 is connected to the water filling port of the air-cooled tower, and the drain pipe 4 is connected to the water inlet cooling port of the air-cooled tower. When the equipment is running, the hot water transported from the condenser of the thermal power plant will enter the insulation tank 1 through the water supply pipe 3 and enter the air-cooled tower through the drain pipe 4 for cooling.

[0047] When water needs to be added to the air-cooled tower, water is pumped into the insulation tank 1 through the water filling equipment and enters the spiral tubes 21 with two spirals through the water inlet pipe 5. At this time, the hot water in the insulation tank 1 will transfer heat to the heat-conducting fins 24 and the spiral tubes 21 to heat up the water in the spiral tubes 21, thereby achieving the effect of raising the water filling temperature. When the water flows into the spiral tubes 21, it will drive the spiral blades 253 to rotate, so that the rotating spiral blades 253 will disturb the water entering the spiral tubes 21 and improve the water flow. The heated water will then enter the air-cooled tower through the water outlet pipe 6 to replenish the air-cooled tower. When the water flows through the water outlet pipe 6, the spiral fins 61 set on the inner wall of the water outlet pipe 6 will disturb the water flow again to maintain the water flow and thus prevent the pipes from freezing due to the low ambient temperature during the water filling process.

[0048] When the ambient temperature rises, the lifting chain 75 is pulled to fold the insulation curtain 72 upwards, exposing the side wall of the insulation tank 1. When the equipment is in use, the hot water in the condenser is filled into the insulation tank 1. The heat of the hot water in the insulation tank 1 is transferred to the T-shaped heat conduction plate 8, and the heat of the hot water in the insulation tank 1 is dissipated outwards through the T-shaped heat conduction plate 8 to initially cool the hot water supplied by the condenser. The water after initial cooling then enters the air-cooled tower through the drain pipe 4 for secondary cooling to further reduce the temperature of the cooling water supplied to the thermal power plant. At the same time, during the water filling process, the temperature of the supplementary water can be used to further cool the hot water in the insulation tank 1 to further reduce the cooling water temperature and improve the cooling effect.

[0049] The combination achieves the effect of water filling and antifreeze in the air-cooled tower, effectively preventing the water filling pipes from freezing and cracking due to excessively low ambient temperatures, and further improving the cooling effect of circulating water to ensure normal production.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A freeze protection device for indirect air-cooled tower water filling, characterized by: The utility model provides a heat preservation bucket (1), the heat preservation bucket (1) is provided with heat exchange assembly (2), the heat preservation bucket (1) is installed with water supply pipe (3), the heat exchange assembly (2) is installed with water inlet inner tube (5), the water inlet inner tube (5) is coaxially arranged in water supply pipe (3), the heat exchange assembly (2) is installed with water outlet inner tube (6), the heat preservation bucket (1) bottom is installed with drain pipe (4), the drain pipe (4) is coaxially arranged on the outside of water outlet inner tube (6), The heat exchange assembly (2) includes two spiral pipes (21) arranged in a spiral, the spiral inside of the two spiral pipes (21) is fixedly connected with a heat conduction rib plate (24), and the two spiral pipes (21) are provided with an agitating assembly (25) therein. The outer wall of the heat preservation bucket (1) is provided with a heat preservation assembly (7) for heat preservation.

2. The anti-freezing device for water filling of an indirect air cooling tower according to claim 1, characterized in that: The agitating assembly (25) includes a fixing frame (251), a rotating shaft (252) is rotatably installed on the fixing frame (251), and a spiral blade (253) is arranged on the rotating shaft (252).

3. The anti-freezing device for water filling of indirect air cooling tower according to claim 1, characterized in that: The water outlet inner tube (6) is provided with a spiral rib plate (61) along the conveying direction, the end of the water inlet inner tube (5) extends outside the water supply pipe (3), and the end of the water outlet inner tube (6) extends outside the drain pipe (4).

4. The anti-freezing device for water filling of indirect air cooling tower according to claim 1, characterized in that: The end of the water inlet inner tube (5) located in the water supply pipe (3) is fixedly connected with a water inlet pipe (22), the water inlet pipe (22) is communicatively arranged on the upper ends of the two spiral pipes (21), the end of the water outlet inner tube (6) located in the drain pipe (4) is fixedly connected with a water outlet pipe (23), and the water outlet pipe (23) is communicatively arranged on the bottom ends of the two spiral pipes (21).

5. The anti-freezing device for water filling of indirect air cooling tower according to claim 1, characterized in that: The side wall of the heat preservation bucket (1) is provided with T-shaped heat conduction plates (8) in a spiral shape, the ends of the T-shaped heat conduction plates (8) extend into the heat preservation bucket (1) and are arranged in an interleaved manner between the two spiral pipes (21), and the vertical sections of the T-shaped heat conduction plates (8) are arranged in abutment on the outer wall of the heat preservation bucket (1).

6. The anti-freezing device for water filling of indirect air cooling tower according to claim 1, characterized in that: The heat preservation assembly (7) includes a fixing plate (71) fixedly connected to the outer wall of the heat preservation bucket (1), a heat preservation curtain (72) arranged below the fixing plate (71), and a mounting plate (73) fixedly connected to the lower end of the heat preservation curtain (72).

7. The anti-freezing device for water filling of an indirect air cooling tower according to claim 6, characterized in that: A guide wheel (74) is rotatably installed on the fixing plate (71), a lifting chain (75) is fixedly connected to the mounting plate (73), and the ends of the lifting chain (75) are wound downward through the guide wheel (74).

8. The anti-freezing device for water filling of indirect air cooling tower according to claim 1, characterized in that: The end of the water supply pipe (3) is connected to the water outlet end of a condenser in a thermal power plant, the end of the drain pipe (4) is connected to the water inlet cooling end of an air cooling tower, the end of the water inlet inner tube (5) located outside the heat preservation bucket (1) is connected to a water filling device, and the end of the water outlet inner tube (6) located outside the heat preservation bucket (1) is connected to a water filling hole of the air cooling tower.

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