A tower top deicing device for a thermal power unit cooling tower

Abstract

The utility model belongs to the electric power and power engineering technical field relates to a thermal power generating unit cooling tower top deicing device, including steel cable, a plurality of hoisting equipment, electric heat tracing system, monitoring system and control system, the steel cable cooperation sleeve is located in the outer periphery of cooling tower top, a plurality of hoisting equipment are used for driving steel cable and move up and down along the outer periphery of cooling tower top, electric heat tracing system is used for carrying out electric heating to steel cable, monitoring system is used for real -time monitoring to the icing condition of cooling tower top and hoisting equipment tension, control system is used for receiving monitoring system signal and according to this signal control electric heat tracing system and hoisting equipment's start -stop. The utility model utilizes the mode of physical friction to remove ice, and only carries out electric heating to steel cable, realizes the deicing function of partition time, has simple structure, stable and reliable, is convenient and effective, and has the advantages such as saving energy consumption.

Description

Technical Field

[0001] This utility model belongs to the field of power and power engineering technology, specifically relating to a de-icing device for the top of a cooling tower of a thermal power unit. Background Technology

[0002] In northern thermal power units with a capacity of 600MW or more, icing at the cooling tower outlet is a severe problem in winter. If ice falls, it can easily cause personal injury, property damage, and other serious consequences. Furthermore, workers cannot climb the tower to remove ice under these conditions. Even if they could, the frequency of de-icing and the associated safety risks do not align with current safety principles and cost-effectiveness considerations.

[0003] A domestic patent application with application number 202110410586.9 discloses a system and method for de-icing the top of an antifreeze cooling tower. However, this system has the following drawbacks: 1. The guide rails, after being exposed to wind and sun and freezing, will deform and break, rendering the de-icing equipment inoperable and thus preventing de-icing. Furthermore, maintenance is complex and time-consuming. 2. Whether the antifreeze can effectively de-ic at -40°C and at a height of over 100 meters is questionable, as is the dosage. Even if the dosage issue can be resolved, replenishing the antifreeze remains problematic. 3. Installing electric heat tracing plates on the top of a large-area, large-perimeter natural draft cooling tower, such as a 600MW tower, would require substantial initial investment and significant energy consumption for maintenance, failing to meet current energy-saving requirements. Utility Model Content

[0004] The purpose of this utility model is to address the defects and shortcomings of existing technologies by designing a simple, stable, reliable, convenient, effective, and energy-saving de-icing device for the top of a cooling tower in a thermal power unit.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a de-icing device for the top of a cooling tower of a thermal power unit, comprising:

[0006] Steel cable, which is fitted and sleeved on the outer periphery of the top of the cooling tower;

[0007] Multiple winches are used to drive steel cables to move up and down along the outer periphery of the top of the cooling tower.

[0008] An electric heat tracing system, wherein the electric heat tracing system is used to electrically heat the steel cable;

[0009] The monitoring system is used to monitor the icing condition at the top of the cooling tower and the tension of the hoisting equipment in real time.

[0010] A control system is provided for receiving signals from the monitoring system and controlling the start and stop of the electric heat tracing system and the hoisting equipment based on the signals.

[0011] Preferably, the diameter of the steel cable is 30mm.

[0012] Preferably, the winch device includes a winch drum and a winch motor for driving the winch drum.

[0013] Preferably, there are 8 sets of winches, which are distributed at intervals along the circumference of the top of the cooling tower on the top platform, and the lifting weight of each set of winches is 5t.

[0014] Preferably, the monitoring system includes a video monitoring component and a tensile force monitoring component.

[0015] Preferably, the upper and lower ends of the outer periphery of the cooling tower top are also provided with limiters, which are used to limit the start and stop positions of the steel cable and prevent the steel cable from falling off.

[0016] After adopting the above technical solution, the de-icing device for the top of a cooling tower of a thermal power unit provided by this utility model has the following beneficial effects:

[0017] (1) This utility model is applicable to the anti-ice-falling design of the top of the natural ventilation cooling tower of nuclear power and thermal power units of 600MW and above, which greatly eliminates the occurrence of ice-falling injury incidents;

[0018] (2) This utility model has a simple structure, low initial investment, and convenient maintenance, which reduces cost investment while satisfying the de-icing effect.

[0019] (3) Compared with the method of melting ice by electric heating, this utility model can reduce the power consumption during use and meet the needs of energy saving and consumption reduction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation structure of a de-icing device for the top of a cooling tower of a thermal power unit according to the present invention.

[0021] Figure 2 This is a top view of a de-icing device for the top of a cooling tower of a thermal power unit according to the present invention.

[0022] The components include: 1. Steel cable; 2. Winch drum; 3. Winch motor; 4. Limit switch; 5. Monitoring system. Detailed Implementation

[0023] The present invention will now be described in further clear and complete detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] During the harsh winter months in northern regions, condensation and icing easily occur at the outlet of natural ventilation cooling towers, potentially leading to falling ice and injuries. To prevent such incidents, this invention provides a de-icing device for the top of a cooling tower in a thermal power unit. Figure 1-2 As shown, it includes steel cable 1, multiple winch devices, electric heat tracing system, monitoring system 5, and control system.

[0030] The steel cable 1 is fitted around the outer perimeter of the cooling tower top. The diameter of the steel cable 1 is 30mm. The multiple winches drive the steel cable 1 up and down along the outer perimeter of the cooling tower top via steel wire ropes. Specifically, the winches include a winch drum 2 and a winch motor 3 for driving the winch drum 2. There are 8 sets of winches, which are distributed at intervals along the circumference of the cooling tower top on the tower top platform. The lifting weight of a single set of winches is 5t. The electric heating system is used to electrically heat the steel cable 1. The monitoring system 5 is set between two adjacent winches and includes video monitoring components for real-time monitoring of the icing situation at the top of the cooling tower and tension monitoring components for real-time monitoring of the tension of the winches. The control system is used to receive signals from the monitoring system 5 and control the start and stop of the electric heating system and the winches according to the signals. Furthermore, limiters 4 are also provided at the upper and lower ends of the outer perimeter of the cooling tower top. The limiters 4 are used to limit the start and stop positions of the steel cable 1 and prevent the steel cable 1 from falling off.

[0031] When ice forms on the top of the cooling tower in winter, this utility model provides a de-icing device for the top of a thermal power unit cooling tower. By adjusting the tension of the hoisting equipment and using a video monitoring system to determine the icing situation, when the icing is relatively minor, the electric heating system is activated, and the hoisting equipment is started. Larger ice blocks are removed by physical friction through the lifting steel cable 1.

[0032] In summary, the de-icing device for the top of a cooling tower of a thermal power unit provided by this utility model utilizes physical friction de-icing and only uses electric heating for steel cables to achieve the function of de-icing in different areas and at different times. This not only ensures a stable de-icing effect but also reduces the initial investment and subsequent energy consumption of the power plant, meeting the long-term needs of energy conservation and emission reduction.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A de-icing device for the top of a cooling tower of a thermal power unit, characterized in that, include: Steel cable (1), wherein the steel cable (1) is fitted and sleeved on the outer periphery of the top of the cooling tower; Multiple winches are used to drive steel cables (1) to move up and down along the outer periphery of the top of the cooling tower. An electric heat tracing system is used to electrically heat the steel cable (1); The monitoring system (5) is used to monitor the icing situation at the top of the cooling tower and the pulling force of the hoisting equipment in real time. A control system is provided for receiving signals from the monitoring system and controlling the start and stop of the electric heat tracing system and the hoisting equipment based on the signals.

2. The de-icing device for the top of a cooling tower of a thermal power unit according to claim 1, characterized in that: The diameter of the steel cable (1) is 30mm.

3. The de-icing device for the top of a cooling tower of a thermal power unit according to claim 1, characterized in that: The hoisting equipment includes a hoist drum (2) and a hoist motor (3) for driving the hoist drum (2).

4. The de-icing device for the top of a cooling tower of a thermal power unit according to claim 1, characterized in that: The hoisting equipment consists of 8 sets, which are distributed at intervals along the circumference of the top of the cooling tower on the top platform, and the lifting weight of each set of hoisting equipment is 5t.

5. The de-icing device for the top of a cooling tower of a thermal power unit according to claim 1, characterized in that: The monitoring system includes a video monitoring component and a tensile force monitoring component.

6. The de-icing device for the top of a cooling tower of a thermal power unit according to claim 1, characterized in that: Limiters (4) are also provided at the upper and lower ends of the outer periphery of the top of the cooling tower. The limiters (4) are used to restrict the start and stop positions of the steel cable (1) and prevent the steel cable (1) from falling off.

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