Anti-freezing heat preservation device for cooling tower of power plant

Abstract

The utility model relates to the technical field of anti-freezing of cooling towers, and discloses a power plant cooling tower anti-freezing heat preservation device which comprises a tower body, the top of the tower body is fixedly connected with a tower top, the top of the tower top is fixedly connected with fins, the interiors of the fins are fixedly connected with annular water pipes, and the outer walls of the annular water pipes are fixedly connected with water return pipes. One end of the water return pipe is fixedly connected to the interior of the tower body, a water inlet pipe is fixedly connected to the outer wall of the annular water pipe, a supporting assembly is arranged on the outer wall of the tower body, and a heating plate is fixedly connected to the top of the supporting assembly. The tower top, the annular water pipe, the water inlet pipe, the water return pipe, the water tank, the water pump and the heating plate are matched, so that the effect of melting an ice layer on the tower top is achieved, and the problems that the tower top is seriously iced, the iced weight is increased, unnecessary loads are brought to the tower structure, and the risk of structural damage or collapse is increased are solved. Therefore, serious potential safety hazards and economic losses are caused, and the installability of the cooling tower of the power plant is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling tower antifreeze, in particular to an antifreeze and heat preservation device for a cooling tower in a power plant. Background Art

[0002] Cooling tower is an important equipment used in power plants to reduce the temperature of power generation equipment. Its main function is to remove heat from the industrial process by cooling hot water or heat medium, and recirculate the cooled water or medium to maintain temperature stability. The anti-freeze insulation device of the cooling tower of the power plant is a measure taken to prevent the structure and equipment of the cooling tower from freezing in a low temperature environment.

[0003] In the cold winter, the low temperature environment may cause ice on the top of the cooling tower. The top of the cooling tower is the part that bears the greatest wind load and ice risk. If the top of the tower is severely frozen, the weight of the ice will increase, bringing unnecessary load to the tower structure, resulting in an increased risk of structural damage or collapse, bringing serious safety hazards and economic losses. Therefore, in order to solve the above problems, a power plant cooling tower anti-freezing insulation device is proposed. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides an anti-freezing and thermal insulation device for a power plant cooling tower, which aims to improve the severe icing on the top of the tower. The weight of the ice will increase, bringing unnecessary load to the tower structure, resulting in an increased risk of structural damage or collapse, causing serious safety hazards and economic losses.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-freezing and heat-insulating device for a cooling tower in a power plant, comprising a tower body, a tower top is fixedly connected to the top of the tower body, a fin is fixedly connected to the top of the tower top, an annular water pipe is fixedly connected to the inside of the fin, a return pipe is fixedly connected to the outer wall of the annular water pipe, one end of the return pipe is fixedly connected to the inside of the tower body, an inlet pipe is fixedly connected to the outer wall of the annular water pipe, a support assembly is arranged on the outer wall of the tower body, a heating plate is fixedly connected to the top of the supporting assembly, a water tank is fixedly connected to the top of the heating plate, a water pump is arranged on the top of the water tank, an input end of the water pump is fixedly connected to the inside of the water tank, an output end of the water pump is fixedly connected to one end of the inlet pipe, a connecting pipe is fixedly connected to the inside of the tower body, a water distribution pipe is fixedly connected to the outer wall of the connecting pipe, one end of the water distribution pipe is fixedly connected to the inside of the water tank, and an electromagnetic valve is arranged inside the water distribution pipe.

[0006] As a further description of the above technical solution:

[0007] The support assembly comprises a bracket, one side of which is fixedly connected to the outer wall of the tower body, and the top of the bracket is fixedly connected to the bottom of the heating plate.

[0008] As a further description of the above technical solution:

[0009] A receiving groove is provided inside the tower body, and a controller is arranged on the outer wall of the tower body.

[0010] As a further description of the above technical solution:

[0011] The top of the controller is fixedly connected to the outer wall of the tower body, a heating wire is fixedly connected inside the controller, and the outer wall of the heating wire is attached to the outer wall of the tower body.

[0012] As a further description of the above technical solution:

[0013] A water pipe is arranged inside the water inlet pipe, and a heat preservation layer is fixedly connected to the outer wall of the water pipe.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the thermal insulation layer is fixedly connected with a protective layer.

[0016] As a further description of the above technical solution:

[0017] The annular water pipes are arranged in a linear array and fixedly connected inside the fins.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the receiving groove is fixedly connected with a drainage pipe.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, firstly, the coordination among the tower top, the annular water pipe, the water inlet pipe, the water return pipe, the water tank, the water pump and the heating plate achieves the effect of melting the ice layer on the tower top, solves the problem of severe icing on the tower top, the weight of the ice will increase, and bring unnecessary load to the tower structure, resulting in an increased risk of structural damage or collapse, bringing serious safety hazards and economic losses, and improving the installability of the power plant cooling tower.

[0022] 2. In the utility model, the effect of utilizing its own heat source is achieved through the coordination between the connecting pipe, the water distribution pipe, the solenoid valve, the bracket, the water pump, the water inlet pipe and the annular water pipe, which solves the problem of relying on electric heat to heat the water source when heating the tower top and then transporting it to the tower top for heating, which wastes energy, and saves energy of the power plant cooling tower.

[0023] 3. In the utility model, the cooperation among the receiving groove, the heating wire, the controller and the drain pipe is used to melt and collect the fallen ice cubes, thereby solving the problem that the melted ice layer on the top of the tower falls directly, which is dangerous if there are operators at the bottom of the tower, thereby ensuring the life safety of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of an anti-freezing and heat preservation device for a power plant cooling tower proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the top of a power plant cooling tower anti-freezing and heat preservation device proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the bottom structure of a receiving tank of a power plant cooling tower anti-freezing and heat preservation device proposed by the utility model;

[0027] Figure 4 The utility model is a cross-sectional view of a water inlet pipe of an anti-freezing and heat preservation device for a power plant cooling tower.

[0028] Legend:

[0029] 1. Tower body; 2. Tower top; 3. Connecting pipe; 4. Water distribution pipe; 5. Solenoid valve; 6. Bracket; 7. Heating plate; 8. Water tank; 9. Water pump; 10. Water inlet pipe; 11. Annular water pipe; 12. Return pipe; 13. Receiving trough; 14. Heating wire; 15. Controller; 16. Drain pipe; 17. Water pipe; 18. Insulation layer; 19. Protective layer; 20. Fins. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 and Figure 2, the utility model provides an embodiment: an anti-freezing and heat preservation device for a cooling tower in a power plant, comprising a tower body 1, a tower top 2 is fixedly connected to the top of the tower body 1, a fin 20 is fixedly connected to the top of the tower top 2, a return pipe 12 is fixedly connected to the inside of the fin 20, one end of the return pipe 12 is fixedly connected to the inside of the tower body 1, an outer wall of an annular water pipe 11 is fixedly connected to a water inlet pipe 10, a support assembly is arranged on the outer wall of the tower body 1, a heating plate 7 is fixedly connected to the top of the support assembly, a water tank 8 is fixedly connected to the top of the heating plate 7, a water pump 9 is arranged on the top of the water tank 8, an input end of the water pump 9 is fixedly connected to the inside of the water tank 8, an output end of the water pump 9 is fixedly connected to one end of the water inlet pipe 10, a connecting pipe 3 is fixedly connected to the inside of the tower body 1, a water distribution pipe 4 is fixedly connected to the outer wall of the connecting pipe 3, one end of the water distribution pipe 4 is fixedly connected to the inside of the water tank 8, a solenoid valve 5 is arranged inside the water distribution pipe 4, and the support assembly comprises a bracket 6, one side of the bracket 6 is fixedly connected to the outer wall of the tower body 1, and the top of the bracket 6 is fixedly connected to the bottom of the heating plate 7;

[0032] Specifically, first, when the water source needs to be cooled, the water to be cooled continuously enters the interior of the tower body 1 through the connecting pipe 3. The tower body 1 is designed with an efficient cooling device to quickly reduce the temperature of the water source to the required level. However, in some cases, such as in the winter in the north, the tower top 2 may freeze due to low temperature. At this time, the solenoid valve 5 will be opened in time, so that the uncooled water source flows into the water tank 8 through the water distribution pipe 4. When the water temperature is high, the input end of the water pump 9 will quickly extract the water source in the water tank 8 and pump it out through the output end of the water pump 9. These water sources then flow into the interior of the annular water pipe 11 through the water inlet pipe 10, and the heat of the annular water pipe 11 is conducted to the tower top 2 through the fins 20, thereby heating and deicing the tower top 2. During the heating and deicing process, the temperature of the water source will gradually decrease. In order to maintain the heating effect, these water sources will return to the interior of the tower body 1 through the return pipe 12 for circulation. This recycling not only improves the utilization rate of water sources, but also effectively saves energy. In addition, when the water source needs to be further heated, the heating plate 7 heats the water tank 8, and then heats the water source inside the water tank 8. This heating method can be flexibly adjusted according to actual needs. When heating is not needed, the heating plate 7 will automatically turn off, thereby avoiding energy waste.

[0033] Reference Figure 3 and Figure 4A receiving groove 13 is provided inside the tower body 1, a controller 15 is provided on the outer wall of the tower body 1, the top of the controller 15 is fixedly connected to the outer wall of the tower body 1, a heating wire 14 is fixedly connected inside the controller 15, the outer wall of the heating wire 14 is attached to the outer wall of the tower body 1, a water pipe 17 is provided inside the water inlet pipe 10, a heat preservation layer 18 is fixedly connected to the outer wall of the water pipe 17, a protective layer 19 is fixedly connected to the outer wall of the heat preservation layer 18, the annular water pipe 11 is arranged in a linear array and fixedly connected to the inside of the fin 20, and a drain pipe 16 is fixedly connected to the outer wall of the receiving groove 13;

[0034] Specifically, when the melted ice layer slides into the receiving tank 13, the controller 15 will start the heating wire 14 for heating. This design cleverly uses heat energy to melt the ice layer in the receiving tank 13 into liquid. Subsequently, the liquid will flow out along the drain pipe 16 for collection or direct discharge. As for the water inlet pipe 10, its structure is also worthy of our attention. The water pipe 17 is made of ordinary steel pipe. Although the steel pipe itself has a certain thermal insulation performance, in order to further improve its thermal insulation effect, we also add a thermal insulation layer 18 on its outside. The thermal insulation layer 18 is made of polyurethane foam, which not only has good thermal insulation performance, but also has excellent thermal insulation effect, which can ensure that the water temperature in the water pipe 17 will not fluctuate due to changes in external temperature. In order to protect the thermal insulation layer 18 and the water pipe 17, we also deliberately cover them with a protective layer 19. This protective layer 19 is made of fiberglass, which has extremely high strength and durability, and can effectively resist external impact and wear, thereby ensuring the service life of the entire water inlet pipe 10.

[0035] Working principle: When the anti-freezing and heat preservation device of the power plant cooling tower is used, the water source to be cooled first enters the tower body 1 through the connecting pipe 3 for cooling. When the top of the tower 2 needs to be heated and de-iced, the solenoid valve 5 is opened to allow the uncooled water source to flow into the water tank 8 through the water distribution pipe 4. When the temperature is high, the water source in the water tank 8 is directly pumped out by the input end of the water pump 9, and pumped out through the output end of the water pump 9, so that the water source flows into the annular water pipe 11 through the water inlet pipe 10 to heat and de-ice the tower top 2. Then the water source returns to the tower body 1 through the return pipe 12 for circulation. When the water source needs to be heated, the heating plate 7 heats the water tank 8. The heating heats the water source inside the water tank 8, thereby reducing energy waste when heating is not needed. The melted ice layer will slide into the receiving groove 13, and then the controller 15 controls the heating wire 14 to melt the ice layer in the receiving groove 13 into liquid, and finally flows out from the drain pipe 16 for collection or direct discharge. The water inlet pipe 10 is composed of a water pipe 17, an insulation layer 18 and a protective layer 19. The water pipe 17 is an ordinary steel pipe, and the insulation layer 18 is polyurethane foam with good thermal insulation performance and heat insulation effect. The protective layer 19 is used to protect the insulation layer 18 and the water pipe 17, and is made of fiberglass.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power plant cooling tower anti-freezing and heat preservation device, comprising a tower body (1), characterized in that: The top of the tower body (1) is fixedly connected to a tower top (2), the top of the tower top (2) is fixedly connected to a fin (20), the inside of the fin (20) is fixedly connected to an annular water pipe (11), the outer wall of the annular water pipe (11) is fixedly connected to a return pipe (12), one end of the return pipe (12) is fixedly connected to the inside of the tower body (1), the outer wall of the annular water pipe (11) is fixedly connected to a water inlet pipe (10), the outer wall of the tower body (1) is provided with a support assembly, and the top of the support assembly is fixedly connected to a heating plate (7 ), the top of the heating plate (7) is fixedly connected to a water tank (8), the top of the water tank (8) is provided with a water pump (9), the input end of the water pump (9) is fixedly connected to the inside of the water tank (8), the output end of the water pump (9) is fixedly connected to one end of a water inlet pipe (10), the inside of the tower body (1) is fixedly connected to a connecting pipe (3), the outer wall of the connecting pipe (3) is fixedly connected to a water distribution pipe (4), one end of the water distribution pipe (4) is fixedly connected to the inside of the water tank (8), and a solenoid valve (5) is provided inside the water distribution pipe (4).

2. The anti-freezing and heat preservation device for cooling tower of power plant according to claim 1, characterized in that: The support assembly comprises a bracket (6), one side of the bracket (6) is fixedly connected to the outer wall of the tower body (1), and the top of the bracket (6) is fixedly connected to the bottom of the heating plate (7).

3. The anti-freezing and heat preservation device for a power plant cooling tower according to claim 1, characterized in that: A receiving groove (13) is provided inside the tower body (1), and a controller (15) is provided on the outer wall of the tower body (1).

4. The anti-freezing and heat preservation device for cooling tower of power plant according to claim 3, characterized in that: The top of the controller (15) is fixedly connected to the outer wall of the tower body (1), and a heating wire (14) is fixedly connected inside the controller (15), and the outer wall of the heating wire (14) is attached to the outer wall of the tower body (1).

5. The anti-freezing and heat preservation device for cooling tower of power plant according to claim 1, characterized in that: A water passage (17) is arranged inside the water inlet pipe (10), and a heat-insulating layer (18) is fixedly connected to the outer wall of the water passage pipe (17).

6. The anti-freezing and heat preservation device for cooling tower of power plant according to claim 5, characterized in that: The outer wall of the thermal insulation layer (18) is fixedly connected with a protective layer (19).

7. The anti-freezing and heat preservation device for a power plant cooling tower according to claim 1, characterized in that: The annular water pipes (11) are arranged in a linear array and fixedly connected inside the fins (20).

8. The anti-freezing and heat preservation device for cooling tower of power plant according to claim 3, characterized in that: The outer wall of the receiving groove (13) is fixedly connected with a drainage pipe (16).

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