A sealed heating device for indirect air cooling system winter operation

Abstract

The application discloses a sealing heating device for winter operation of an indirect air cooling system, comprising a driving mechanism, an anti-swing fixing mechanism and a plurality of connected anti-freezing curtains installed on the indirect air cooling tower; the top of the anti-freezing curtain is connected with the driving mechanism, and the bottom of the anti-freezing curtain is connected with the anti-swing fixing mechanism; wherein the anti-freezing curtain comprises an outer insulation layer and an inner heating layer, and the outer insulation layer is arranged outside the inner heating layer. The anti-freezing curtain is detachably arranged outside the indirect air cooling tower to heat and insulate the indirect air cooling tower, so that the problem of draught is effectively avoided; the anti-freezing curtain is easy to dismount and install according to the external environment, and has the characteristics of small space occupation, simple use, convenience and good anti-freezing effect.

Description

Technical Field

[0001] This invention belongs to the technical field of air-cooled towers in thermal power plants, specifically relating to a sealed heating device for winter operation of indirect air-cooled systems. Background Technology

[0002] With the development of the machinery industry, more and more mechanical equipment has been widely used. Air-cooled towers are often installed in large factories, manufacturing enterprises, and even large residential areas. An air-cooled tower is a device that uses water as a circulating coolant to absorb heat from the system and release it into the atmosphere to lower the water temperature.

[0003] In operation, air-cooled towers utilize the heat exchange between water and air to generate steam. The steam evaporates, carrying away heat through evaporation, convection, and radiation to dissipate waste heat generated in industrial processes or refrigeration and air conditioning systems, thereby lowering the water temperature and ensuring normal system operation. Air-cooled towers are primarily used in air conditioning cooling systems, aluminum profile processing, air compressors, and industrial water cooling, with the most common applications in air conditioning, refrigeration, and the plastics and chemical industries. Specifically, they can be used for air temperature control, manufacturing and processing, and cooling of operating machinery. However, in colder regions like northern my country, the low winter temperatures cause a sharp increase in heat dissipation from the air-cooled radiators. Combined with specific on-site requirements, this leads to a decrease in the inlet cooling water temperature of the tower. These factors make the circulating water within the air-cooled radiator tubes prone to freezing. The resulting volume expansion from freezing can cause blockage and cracking of the radiator tubes, seriously threatening the safe operation of the indirect air-cooling system and even the entire plant. Therefore, solving the freezing problem in indirect air-cooling systems can significantly improve the economy, stability, and safety of air-cooled power plants.

[0004] In existing technologies, to address the freezing problem of indirect air-cooled towers, such as the invention patent with patent number CN110595224A, the freezing prevention for air-cooled towers is achieved by designing mutually cooperating sealing columns and louvers. Its advantage is that it is easy to adjust during normal operation and can control the air flow of the air-cooled tower. However, since the louvers are mechanical structures with many moving parts, they are prone to mechanical failure. Furthermore, due to the large suction force of the air-cooled tower, even when the louvers are fully closed, air will still flow through the tube bundle under the action of suction force, affecting its freezing prevention effect. Summary of the Invention

[0005] To address the shortcomings of the existing technology, the present invention aims to provide a sealed heating device for winter operation of an indirect air-cooled system. This device can heat and insulate the indirect air-cooled tower, effectively avoiding the problem of drafts. It also has a simple structure, is easy to adjust, and can be disassembled and installed according to the external environment. It features small footprint, ease of use, and good antifreeze effect.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A sealed heating device for winter operation of an indirect air-cooled system includes a drive mechanism, an anti-sway fixing mechanism, and several connected anti-freeze curtains that can protect the indirect air-cooled tower; the top of the anti-freeze curtains is connected to the drive mechanism, and the lower end of the anti-freeze curtains is connected to the anti-sway fixing mechanism.

[0008] The antifreeze curtain includes an outer insulation layer and an inner heating layer, with the outer insulation layer located outside the inner heating layer.

[0009] Furthermore, the drive mechanism includes a geared motor, a rotating shaft, and a mounting component. The rotating shaft is mounted on the mounting component and is connected to the upper end of the antifreeze curtain. The geared motor is connected to the rotating shaft.

[0010] Furthermore, the geared motor is fixedly mounted on the outside of the mounting component, and the mounting component is connected to the rotating shaft through an inner bearing.

[0011] Furthermore, a moisture-proof layer is provided on the outside of the external insulation layer.

[0012] Furthermore, a vent pipe is provided inside the inner heating layer, and the vent pipe is distributed in an S-shape. One end of the vent pipe is provided with a first air inlet, and the other end is provided with a second air outlet.

[0013] Furthermore, the first air inlet of the antifreeze curtain is connected to the second air outlet of the adjacent antifreeze curtain via a conduit.

[0014] Furthermore, several waist belts are provided on the outer wall of the outer insulation layer, and tie straps are provided at both ends of the waist belts. Adjacent antifreeze curtains are connected by tie straps.

[0015] The antifreeze curtain has zippers and matching zipper pulls on both sides.

[0016] Furthermore, a buffer plate is provided at the lower end of the outer insulation layer, and an anti-sway fixing mechanism is provided at the bottom of the buffer plate;

[0017] The rotating shaft has a mounting slot, and the top of the antifreeze curtain has a mounting clip that matches the mounting slot.

[0018] Furthermore, the anti-sway fixing mechanism includes a pressure plate and a positioning column;

[0019] The pressure plate is installed on the ground, the top of the positioning post passes through the buffer plate, and the bottom is set on the pressure plate. A spring is sleeved on the positioning post between the buffer plate and the pressure plate.

[0020] Furthermore, an elastic connector is provided between the pressure plate and the buffer plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention utilizes a drive mechanism, an anti-freeze curtain, and an anti-sway fixing mechanism. The drive mechanism retracts and releases the anti-freeze curtain, which forms a wrapping mechanism to protect the indirect air-cooled tower, thus achieving insulation and anti-freeze effects. The anti-sway fixing mechanism secures the lower end of the anti-freeze curtain, using gravity to prevent it from swaying, effectively preventing external disturbances from affecting its insulation effect. The invention is simple in structure, easy to adjust, and can be disassembled and installed according to the external environment. It has the advantages of small footprint, ease of use, and good anti-freeze effect. The anti-freeze curtain is designed with a two-layer structure: an outer insulation layer and an inner heating layer, effectively ensuring its insulation and anti-freeze effects. The wrapping mechanism of the anti-freeze curtain protects the indirect air-cooled tower, preventing drafts and effectively guaranteeing the anti-freeze effect of the device.

[0023] Furthermore, this device features mounting slots on the rotating shaft and mounting clips on the upper end of the antifreeze curtain. Its modular structure allows for easy installation and disassembly as needed, making it convenient for factories to install and assemble according to specific requirements. It offers high flexibility, allowing each factory to adapt to its specific needs. The simple structure and easy adjustment facilitate widespread adoption by various factories.

[0024] Furthermore, the use of waistbands, cable ties, and zippers allows adjacent antifreeze curtains to be connected after release. Attached Figure Description

[0025] Figure 1 This is a diagram showing the usage state of the indirect air-cooled tower sealing heating device of the present invention.

[0026] Figure 2 This is a front view of the indirect air-cooled tower sealing heating device of the present invention.

[0027] Figure 3 This is a rear view of the indirect air-cooled tower sealing heating device of the present invention.

[0028] Figure 4 This is a side view of the antifreeze curtain of the present invention.

[0029] Figure 5 for Figure 3A magnified view of a portion of point A in the middle.

[0030] Figure 6 This is an exploded view of the driving mechanism of the present invention.

[0031] The components are: 1. Wall, 2. Drive mechanism, 21. Gear motor, 22. Shaft, 221. Keyway, 222. Mounting slot, 23. Suspension steel pipe, 24. Mounting component, 25. Bearing, 26. Tightening bolt, 3. Anti-freeze curtain, 30. Inner heating layer, 31. Outer insulation layer, 32. Zipper, 33. Waistband, 34. Cable tie, 35. Zipper head, 36. Buffer plate, 37. First air inlet, 371. Second air outlet, 38. Vent pipe, 39. Mounting clip, 30. Inner heating layer, 4. Anti-sway fixing mechanism, 41. Pressure plate, 42. Elastic connector, 43. Positioning post, 44. Spring, 45. Positioning bolt, 46. Positioning sleeve. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Reference Figures 1-6 The present invention discloses a sealed heating device for winter operation of an indirect air-cooled system, which is installed on the outside of the wall 1 of the indirect air-cooled tower. A suspended steel pipe 23 is installed on the top of the wall 1. The sealed heating device includes a drive mechanism 2, an anti-sway fixing mechanism 4, and several anti-freeze curtains 3 installed on the indirect air-cooled tower. The top of the anti-freeze curtains 3 is connected to the drive mechanism 2, and the bottom of the anti-freeze curtains 3 is connected to the anti-sway fixing mechanism 4.

[0034] Among them, see Figure 2 , Figure 3 , Figure 5 and Figure 6 The drive mechanism 2 includes a geared motor 21, a rotating shaft 22, and a mounting component 24. The mounting component 24 is movably mounted on the suspended steel pipe 23 at the top of the wall 1 by a tightening bolt 26. The rotating shaft 22 is located between two symmetrically arranged mounting components 24 and is connected to the upper end of the antifreeze curtain 3. The geared motor 21 is located at the end of the rotating shaft 22. In use, the geared motor 21 drives the rotating shaft 22 to move, thereby realizing the operation of rolling up and lowering the curtain.

[0035] Preferred, see Figure 6The geared motor 21 is fixedly installed on the outside of the mounting component 24. The mounting component 24 is connected to the rotating shaft 22 through the inner bearing 25. The rotating shaft 22 is rotatably installed between the two mounting components 24. In use, the rotating shaft 22 can be driven to rotate by the geared motor 21. A keyway 221 is also provided at the end of the rotating shaft 22. The keyway 221 is used in conjunction with the end of the drive shaft of the geared motor 21 to connect the rotating shaft 22 to the geared motor 21. That is, in use, the rotating shaft 22 is driven to rotate by the rotation of the geared motor 21.

[0036] Preferred, see Figure 3 To ensure the antifreeze effect of the antifreeze curtain 3 during use, the antifreeze curtain 3 includes an outer insulation layer 31 and an inner heating layer 30. The outer insulation layer 31 is disposed on the outside of the inner heating layer 30 and on the inside of the inner heating layer 30. It is preferably made of insulation roll material, and a moisture-proof layer is provided on the outside of the outer insulation layer 31 for moisture protection and heat preservation during use.

[0037] The inner heating layer 30 is located on the side closest to the wall 1, while the outer insulation layer 31 is located away from the wall 1. A flexible vent pipe 38 is arranged within the inner heating layer 30 in an S-shape, allowing hot air to pass through it. A first air inlet 37 and a second air outlet 371 are located at the ends of the vent pipes 38. The positions of the first air inlet 37 and the second air outlet 371 can be adjusted according to actual working conditions. The first air inlet 37 of one antifreeze curtain 3 is connected to the second air outlet 371 of an adjacent antifreeze curtain 3 via a conduit. During use, the inner heating layer 30 is heated using the vent pipe 38, and the heating systems of adjacent antifreeze curtains 3 are connected via conduits to achieve unified heating and antifreeze protection.

[0038] Preferably, in order to prevent the antifreeze curtain 3 from swinging under the action of wind during use and forming a through wind on the inside of the antifreeze curtain 3, which would affect the antifreeze effect of the antifreeze curtain 3, waist belts 33 are also provided at equal intervals on the outer wall of the outer insulation layer 31. The two ends of the waist belts 33 are provided with cable ties 34, and the two adjacent antifreeze curtains 3 are connected by the cable ties 34 during use.

[0039] Preferably, to facilitate the connection of two adjacent antifreeze curtains 3 during use, zippers 32 are also provided on the left and right sides of the antifreeze curtains 3. The zippers 32 are used in conjunction with zipper heads 35. During installation, the zipper heads 35 are used to connect two adjacent antifreeze curtains 3 to form a whole, which is used to wrap the indirect air-cooled tower and thus prevent freezing.

[0040] Preferably, in order to install the anti-sway fixing mechanism 4, an L-shaped buffer plate 36 is provided at the lower end of the outer insulation layer 31. The buffer plate 36 is used in conjunction with the anti-sway fixing mechanism 4, and the anti-sway fixing mechanism 4 is located on the lower side of the buffer plate 36.

[0041] Preferred, see Figure 4 To facilitate the replacement or installation of the antifreeze curtain 3 during use, i.e., to achieve detachable installation of the rotating shaft 22 and the antifreeze curtain 3, a continuous mounting slot 222 is provided on the rotating shaft 22. The mounting slot 222 works in conjunction with the mounting clip 39 located at the upper end of the antifreeze curtain 3. That is, during use, the upper end of the antifreeze curtain 3 is mounted on the rotating shaft 22 through the mutual cooperation of the mounting slot 222 and the mounting clip 39, thus achieving detachable installation of the rotating shaft 22 and the antifreeze curtain 3.

[0042] The usage process of the indirect air-cooled tower sealing heating device described in this embodiment includes:

[0043] Step 1: When the external air temperature of the indirect air-cooled tower is low and the above-mentioned indirect air-cooled tower sealing heating device is needed to insulate the indirect air-cooled tower, first determine the number of this device as needed, and install this device on the suspended steel pipe 23 at the top of the wall 1 of the indirect air-cooled tower. Then, by driving the reduction motor 21, the antifreeze curtain 3 is released, so that the buffer plate 36 at the free end of the antifreeze curtain 3 falls to the ground of the indirect air-cooled tower foundation.

[0044] Step 2: Then, as needed, use cable ties 34 and zipper heads 35 or zippers 32 and zipper heads 35 to connect two adjacent antifreeze curtains 3 to form a whole to wrap the indirect air-cooled tower, thereby preventing the antifreeze curtains 3 from swinging under the action of external wind or other forces, which would affect the antifreeze effect of the antifreeze curtains 3.

[0045] Step 3: After connecting all the antifreeze curtains 3 to form an integral structure, use conduits to connect the ventilation pipes 38 of each antifreeze curtain 3 to form an integrated heating system. Finally, use heating equipment to heat the ventilation pipes 38.

[0046] To connect the buffer plate 36 at the lower end of the antifreeze curtain 3 to the ground during use and prevent the antifreeze curtain 3 from swinging, an anti-sway fixing mechanism 4 is designed, including an L-shaped pressure plate 41 and an elastic connector 42. The pressure plate 41 is installed on the ground below the indirect air-cooled tower by a positioning bolt 45, and a positioning post 43 is provided on the pressure plate 41. Specifically, the top of the positioning post 43 passes through the buffer plate 36 and is connected to the buffer plate 36 by a connecting nut. The bottom end is set on the pressure plate 41. A spring 44 is sleeved on the positioning post 43 between the buffer plate 36 and the pressure plate 41 to play a buffering role, protect the buffer plate 36, and protect the antifreeze curtain 3 under external disturbance.

[0047] The elastic connector 42 is installed between the pressure plate 41 and the buffer plate 36, elastically connecting the pressure plate 41 and the buffer plate 36, so that the stress is evenly distributed.

[0048] The anti-sway fixing mechanism 4 is located at the lower end of the antifreeze curtain 3. In use, it uses gravity to prevent the antifreeze curtain 3 from swaying. At the same time, the anti-sway fixing mechanism 4 works in conjunction with the positioning sleeve 46 located on the foundation of the indirect air-cooled tower to fix the lower end of the antifreeze curtain 3.

[0049] The principle of the anti-sway fixing mechanism 4 in this embodiment includes:

[0050] During the release of the antifreeze curtain 3, when the buffer plate 36 is close to the ground, the elastic connector 42 is welded between the pressure plate 41 and the buffer plate 36. Then, the buffer plate 36 and the pressure plate 41 are connected by the positioning pin 43 and the spring 44. Finally, the two adjacent antifreeze curtains 3 are connected by the cable tie 34 or the zipper 32 and the zipper head 35 to form a whole to wrap the indirect air-cooled tower. Then, the antifreeze curtain 3 is fixedly installed on the outside of the wall of the indirect air-cooled tower by the interaction of the positioning bolt 45 and the sleeve 46 to prevent the indirect air-cooled tower from freezing.

[0051] This invention, by setting up a driving mechanism, an antifreeze curtain, and an anti-sway fixing mechanism, allows the antifreeze curtain to be detachably installed on the outside of the wall of the indirect air-cooled tower, thereby heating and insulating the indirect air-cooled tower and effectively avoiding the problem of drafts. At the same time, the structure is simple, the adjustment process is convenient, and it can be disassembled and installed according to the external environment. It has the characteristics of small space occupation, simple and convenient use, and good antifreeze effect.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A sealed heating device for winter operation of an indirect air-cooled system, characterized in that, It includes a drive mechanism (2) installed on the indirect air-cooled tower, an anti-sway fixing mechanism (4) and several connected anti-freeze curtains (3) that can protect the indirect air-cooled tower; the top of the anti-freeze curtain (3) is connected to the drive mechanism (2) and the bottom of the anti-freeze curtain (3) is connected to the anti-sway fixing mechanism (4). The antifreeze curtain (3) includes an outer insulation layer (31) and an inner heating layer (30), wherein the outer insulation layer (31) is located on the outside of the inner heating layer (30); The drive mechanism (2) includes a geared motor (21), a rotating shaft (22) and a mounting component (24). The rotating shaft (22) is mounted on the mounting component (24) and is connected to the upper end of the antifreeze curtain (3). The geared motor (21) is connected to the rotating shaft (22). A moisture-proof layer is provided on the outside of the external insulation layer (31); An air vent (38) is provided inside the inner heating layer (30), and the air vent (38) is S-shaped. One end of the air vent (38) is provided with a first air inlet (37), and the other end is provided with a second air outlet (371). The first air inlet (37) of the antifreeze curtain (3) is connected to the second air outlet (371) of the adjacent antifreeze curtain (3) through a conduit; Several waistbands (33) are provided on the outer wall of the outer insulation layer (31), and tie straps (34) are provided at both ends of the waistbands (33). Adjacent antifreeze curtains (3) are connected by tie straps (34). Zippers (32) and zipper heads (35) that match the zippers (32) are provided on both sides of the antifreeze curtain (3). A buffer plate (36) is provided at the lower end of the outer insulation layer (31), and an anti-sway fixing mechanism (4) is provided at the bottom of the buffer plate (36); The rotating shaft (22) is provided with a mounting slot (222), and the top of the antifreeze curtain (3) is provided with a mounting clip (39) that cooperates with the mounting slot (222); The anti-sway fixing mechanism (4) includes a pressure plate (41) and a positioning column (43); Among them, the pressure plate (41) is installed on the ground, the top of the positioning column (43) passes through the buffer plate (36), the bottom is set on the pressure plate (41), and a spring (44) is sleeved on the positioning column (43) between the buffer plate (36) and the pressure plate (41). An elastic connector (42) is provided between the pressure plate (41) and the buffer plate (36); The pressure plate (41) is installed on the ground below the indirect air-cooled tower by a positioning bolt (45), and the positioning column (43) is connected to the buffer plate (36) by a connecting nut.

2. A sealed heating device for winter operation of an indirect air-cooled system according to claim 1, characterized in that, The geared motor (21) is fixedly installed on the outside of the mounting part (24), and the mounting part (24) is connected to the rotating shaft (22) through the inner bearing (25).

Images