Flip type anti-freezing device for air cooling island

Abstract

The utility model relates to the technical field of air cooling islands, in particular to an air cooling island flip type anti-freezing device which comprises cover plates, pull cables, pulleys and winches, the cover plates are semicircular and symmetrically arranged on the left side and the right side of an aisle, the straight edges of the cover plates are hinged to the bottom end of the aisle, and the arc edges of the cover plates are in lap joint with the top end of the peripheral wall of an air duct. The pulley is installed at the top end of a handrail of a passage, the winch is installed in the middle of the handrail, one end of the pull cable is connected with the middle of the top end of the cover plate, and the other end of the pull cable bypasses the pulley to be connected with the winch. The anti-freezing device is simple in structural design, small in occupied area, low in manufacturing cost and good in anti-freezing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of air cooling islands, in particular to a flip-type antifreeze device for air cooling islands. Background Art

[0002] Air-cooled islands typically use steam-filled radiators. Their working principle is to transport exhaust steam from the steam turbine through steam pipes to the radiator, where the heat is removed by a cooling fan, causing the exhaust steam to condense into water. To prevent freezing damage to the air-cooled island during severe cold spells in northern China, a traditional method is to cover the radiator or cooling fan air inlet with a blanket. However, these blankets are easily blown away by the wind and need to be recovered in rainy or snowy weather, which is very troublesome.

[0003] Currently, the existing practice is to install rolling shutters at the cooling fan inlets. While this overcomes the shortcomings of traditional methods, their length and width, both approximately 10 meters, require a large footprint and are expensive. Furthermore, they take up a long time to fully open and close, resulting in a slow response. Furthermore, during periods of strong winds during severe cold spells, air on the windward side of the air-cooling island tends to backflow and then flow out the leeward side. The actual amount of air cooled in the air-cooling island is high, making it prone to freezing (especially on the shutter's guide rails), causing the shutter to jam when opening and closing, thus affecting its usability. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide an air-cooled island flip-cover antifreeze device with simple structural design, small footprint, low cost and good antifreeze effect.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an air-cooled island flip-type anti-freeze device, including a cover plate, a cable, a pulley and a winch. The cover plate is semicircular and is symmetrically arranged on the left and right sides of the aisle. The straight edge of the cover plate is hinged to the bottom end of the aisle, and its arc edge overlaps the top of the wind tube wall. The pulley is installed at the top of the railing of the aisle, and the winch is installed in the middle of the railing. One end of the cable is connected to the middle of the top of the cover plate, and the other end passes around the pulley and is connected to the winch.

[0006] Furthermore, a pressure sensor is installed on the outer side of the middle portion of the railing.

[0007] Furthermore, a spring is installed on the outer side of the top end of the railing.

[0008] Furthermore, a reinforcing rib is installed at the middle of the top end of the cover plate. The reinforcing rib is arranged longitudinally and connected to one end of the pull cable.

[0009] Furthermore, it also includes a limiting structure, which includes a base, a stud, a nut, a slave bevel gear, a main bevel gear, a rotating shaft and a rotating wheel. The base is installed at the top of the railing, and the stud is slidably installed in a groove opened in the middle of the base, and its top extends out of the groove. A socket corresponding to the stud is opened on the reinforcing rib, and the nut is rotatably installed in an annular cavity provided in the base, and is threadedly sleeved in the middle of the stud. The slave bevel gear and the main bevel gear are both arranged in the annular cavity, and the slave bevel gear is sleeved on the nut and meshed with the main bevel gear. The rotating shaft is rotatably installed in the axial hole opened in the base, one end of the rotating shaft extends into the annular cavity and is connected to the main bevel gear, and the other end thereof extends out of the axial hole and is connected to the rotating wheel.

[0010] Furthermore, the top end of the stud is spherical.

[0011] The beneficial effects of the utility model are:

[0012] (1) The utility model realizes the flattening and vertical placement of the semicircular cover plate by retracting and pulling the cable with a winch, thereby realizing the opening and closing of the cooling fan air inlet. Compared with the rolling door, the utility model has a simple structure design, small footprint, low cost and good anti-freezing effect.

[0013] (2) The utility model uses a pressure sensor to sense the position of the cover when it is placed upright, thereby preventing the cover from tilting excessively toward the aisle when it is placed upright, thereby preventing the cover from being unable to automatically flip over.

[0014] (3) The utility model provides a thrust to the upright cover plate by setting a spring, thereby further preventing the cover plate from being unable to automatically flip over due to excessive tilting toward the aisle.

[0015] (4) The utility model limits the upright cover plate by setting a limiting structure, thereby preventing the cover plate from accidentally falling due to cable failure during the maintenance of the cooling fan, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0017] Figure 1 This is a schematic diagram of the installation of the utility model on an air cooling island;

[0018] Figure 2 This is a side view of the cover plate of the present invention when placed upright;

[0019] Figure 3 This is a top view of the cover plate of the present invention when it is laid flat;

[0020] Figure 4 yes Figure 1 the enlarged portion of the middle A section;

[0021] Figure 5 This is the installation position diagram of the limiting structure in the utility model;

[0022] Figure 6 It is a cross-sectional view of the limiting structure of the utility model.

[0023] In the figure: 100, cover plate; 200, cable; 300, pulley; 400, winch; 500, aisle; 510, railing; 600, air duct; 700, pressure sensor; 800, spring; 900, reinforcing rib; 910, jack; 1000, limiting structure; 1010, base; 1011, groove; 1012, annular cavity; 1013, shaft hole; 1020, stud; 1030, screw sleeve; 1040, slave bevel gear; 1050, main bevel gear; 1060, rotating shaft; 1070, rotating wheel. DETAILED DESCRIPTION

[0024] The present invention will now be further described with reference to the accompanying drawings, which are simplified schematic diagrams illustrating the basic structure of the present invention in a schematic manner, and thus only show components related to the present invention.

[0025] Example 1

[0026] like Figures 1-4 As shown, a flip-cover antifreeze device for an air-cooled island includes a cover plate 100, a cable 200, a pulley 300, and a winch 400. The cover plate 100 is semicircular and symmetrically arranged on the left and right sides of aisle 500. The straight edge of the cover plate 100 is hinged to the bottom end of the aisle 500, and its curved edge overlaps the top of the peripheral wall of the air duct 600. The pulley 300 is installed at the top of the railing 510 of the aisle 500, and the winch 400 is installed in the middle of the railing 510. One end of the cable 200 is connected to the middle of the top of the cover plate 100, and the other end passes around the pulley 300 and is connected to the winch 400. The winch 400 retracts and retracts the cable 200 to achieve flat and upright placement of the semicircular cover plate 100, thereby achieving opening and closing of the cooling fan air inlet. Compared with a rolling door, the structure design is simple, the floor space is small, the cost is low, and the antifreeze effect is good. In addition, the cooling fan air inlet can be opened and closed by simply rotating the cover plate 100 90 degrees, which has a faster response speed than a rolling door.

[0027] like Figure 4As shown, when the cover plate 100 is flipped from standing to laying flat, it is mainly achieved by the weight of the cover plate 100 itself, which is more energy-efficient. In order to ensure that the cover plate 100 is flipped from standing to laying flat by its own weight, it is necessary to prevent the cover plate 100 from tilting excessively toward the aisle 500 when standing, that is, the cover plate 100 leans against the railing 510. To avoid the occurrence of the above situation, a pressure sensor 700 is installed on the outer side of the middle part of the railing 510. The pressure sensor 700 can sense the position of the cover plate 100 when standing, and prevent the cover plate 100 from tilting excessively toward the aisle 500 when standing. When the cooling fan air inlet needs to be opened, the winch 400 pulls the cover plate 100 to flip through the cable 200. When the pressure sensor 700 senses squeezing, the winch 400 stops working. At this time, under normal circumstances, the cover plate 100 placed upright will tilt slightly away from the aisle 500. Specifically, the pressure sensor 700 is connected to the outer side of the middle portion of the railing 510 through a corner plate.

[0028] like Figure 4 As shown, a spring 800 is installed on the outer side of the top of the railing 510. The spring 800 gives a thrust to the upright cover 100, further preventing the cover 100 from being unable to automatically flip over due to excessive tilting toward the aisle 500. When the cover 100 is upright, the spring 800 is compressed.

[0029] like Figure 2-Figure 4 As shown, a reinforcing rib 900 is installed at the top center of the cover plate 100. The reinforcing rib 900 is arranged longitudinally and connected to one end of the cable 200. The provision of the reinforcing rib 900 improves the overall strength and rigidity of the cover plate 100. Specifically, the cable 200 is respectively provided at both ends of the reinforcing rib 900.

[0030] When the cooling fan air inlet is closed, the winch 400 releases the cable 200, and the elastic force of the spring 800 pushes the upright cover 100, and the cover 100 flips under the action of its own gravity until the cover 100 is flat, covering the cooling fan air inlet.

[0031] Example 2

[0032] This embodiment adds a limiting structure 1000 on the basis of embodiment 1. Through the setting of the limiting structure 1000, the upright cover plate 100 is limited to prevent the cover plate 100 from accidentally falling due to failure of the cable 200 during maintenance of the cooling fan, thereby improving safety.

[0033] like Figure 5 and Figure 6As shown, the limiting structure 1000 includes a base 1010, a stud 1020, a screw sleeve 1030, a slave bevel gear 1040, a main bevel gear 1050, a rotating shaft 1060 and a rotating wheel 1070. The base 1010 is installed at the top of the railing 510, and the stud 1020 is slidably installed in the groove 1011 opened in the middle of the base 1010, and its top extends out of the groove 1011. The reinforcing rib 900 is provided with a socket 910 corresponding to the stud 1020, and the screw sleeve 1030 is rotatably installed in the base 1010. The screw thread 1030 is screwed into the annular cavity 1012 and is threadedly sleeved on the middle part of the stud 1020. The slave bevel gear 1040 and the main bevel gear 1050 are both arranged in the annular cavity 1012. The slave bevel gear 1040 is sleeved on the screw sleeve 1030 and meshes with the main bevel gear 1050. The rotating shaft 1060 is rotatably mounted in the shaft hole 1013 opened in the base 1010. One end of the rotating shaft 1060 extends into the annular cavity 1012 and is connected to the main bevel gear 1050, and the other end thereof extends out of the shaft hole 1013 and is connected to the runner 1070. Specifically, the top of the stud 1020 is spherical, which facilitates the top of the stud 1020 to enter the insertion hole 910; the groove 1011 is connected to the shaft hole 1013 through the annular cavity 1012. When the winch 400 pulls the cover plate 100 to an upright position by pulling the cable 200, the maintenance personnel rotates the wheel 1070, and then drives the main bevel gear 1050 to rotate through the shaft 1060. Due to the engagement of the main bevel gear 1050 with the slave bevel gear 1040, the screw sleeve 1030 is driven to rotate. The threaded cooperation between the screw sleeve 1030 and the stud 1020 converts the rotation of the screw sleeve 1030 into axial movement of the stud 1020, that is, the stud 1020 moves up and down in the groove 1011, and the top end of the stud 1020 enters the socket 910, thereby realizing the limitation of the upright cover plate 100.

[0034] The above-mentioned implementation mode is only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. An air-cooling island flip-cover antifreeze device, characterized by: The invention comprises a cover plate (100), a cable (200), a pulley (300) and a winch (400); the cover plate (100) is semicircular and symmetrically arranged on the left and right sides of the aisle (500); the straight edge of the cover plate (100) is hinged to the bottom end of the aisle (500), and the arc edge thereof overlaps the top end of the peripheral wall of the wind tube (600); the pulley (300) is installed at the top end of the railing (510) of the aisle (500); the winch (400) is installed in the middle of the railing (510); one end of the cable (200) is connected to the middle part of the top end of the cover plate (100), and the other end thereof passes around the pulley (300) and is connected to the winch (400).

2. The air-cooling island flip-type antifreeze device according to claim 1 is characterized in that: A pressure sensor (700) is installed on the outer side of the middle portion of the railing (510).

3. The air-cooling island flip-type antifreeze device according to claim 1 is characterized in that: A spring (800) is installed on the outer side of the top end of the railing (510).

4. The air-cooling island flip-type antifreeze device according to claim 1 is characterized in that: A reinforcing rib (900) is installed at the middle of the top end of the cover plate (100), and the reinforcing rib (900) is arranged longitudinally and connected to one end of the pulling cable (200).

5. The air-cooling island flip-type antifreeze device according to claim 4 is characterized in that: The invention also includes a limiting structure (1000), wherein the limiting structure (1000) includes a base (1010), a stud (1020), a screw sleeve (1030), a secondary bevel gear (1040), a primary bevel gear (1050), a rotating shaft (1060) and a rotating wheel (1070). The base (1010) is installed at the top of the railing (510). The stud (1020) is slidably installed in a groove (1011) provided in the middle of the base (1010), and the top of the stud (1020) extends out of the groove (1011). The reinforcing rib (900) is provided with a socket (910) corresponding to the stud (1020). The screw sleeve (1030) is rotatably installed on the base. The base (1010) is provided with an annular cavity (1012) and is threadedly sleeved on the middle part of the stud (1020). The slave bevel gear (1040) and the master bevel gear (1050) are both provided in the annular cavity (1012). The slave bevel gear (1040) is sleeved on the screw sleeve (1030) and meshed with the master bevel gear (1050). The rotating shaft (1060) is rotatably mounted in the shaft hole (1013) opened in the base (1010). One end of the rotating shaft (1060) extends into the annular cavity (1012) and is connected to the master bevel gear (1050), and the other end thereof extends out of the shaft hole (1013) and is connected to the rotating wheel (1070).

6. The air-cooling island flip-type antifreeze device according to claim 5, characterized in that: The top end of the stud (1020) is spherical.

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