Height-adjustable cooling tower for thermal power plant

Abstract

The utility model relates to a kind of cooling towers of height-adjustable filler of thermal power plant of thermal power plant, including tower main body, support, rotating adjusting part, filler and sprinkler device;The support includes fixed frame and movable frame, fixed frame is fixedly installed on the inner wall of the tower main body, movable frame is connected with the fixed frame by at least one rotating adjusting part, to be able to adjust the axial distance between movable frame and the fixed frame;First filling area is formed on the fixed frame, second filling area is formed on the movable frame, along the axial direction of the tower main body, the projection of the first filling area and the projection of the second filling area coincide;The filler includes first filler and second filler, first filler is filled in first filling area, second filler is filled in second filling area, and the first filler and the second filler are connected along the axial direction of the tower main body, with the advantage that the height of filler can be adjusted to avoid icing at the lower end of filler when ambient temperature is too low.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling equipment, and in particular to a cooling tower with adjustable packing height for thermal power plants. Background Technology

[0002] Natural draft counterflow wet cooling towers (hereinafter referred to as cooling towers) are commonly used cold-end equipment in thermal power plants and nuclear power plants. This type of cooling tower is a device that uses the principles of evaporation and convection cooling to cool hot water and reduce the temperature of circulating water. That is, hot water is sprayed downwards from the top of the cooling tower and comes into contact with the upward flow of humid air, so as to use the humid air to carry the heat in the hot water into the atmosphere.

[0003] To increase the contact area and contact time between two convective fluids, cooling towers typically contain packing material. The arrangement and height of this packing material directly affect the cooling tower's efficiency. To improve cooling performance, the current method for arranging packing material in cooling towers usually involves first fixing a support frame inside the tower, and then laying a layer of packing material of a certain height directly on top of the support frame.

[0004] However, once the packing arrangement is determined, the packing height cannot be adjusted. During cold seasons, especially in northern regions where ambient temperatures can drop to minus ten or even tens of degrees Celsius, prolonged contact between cold air and the coolant can easily lead to ice formation at the bottom of the packing and other areas. This ice can grow into icicles and columns, increasing the load on the support columns and packing, and potentially causing collapse. In severe cases, it can even affect the safe and stable operation of units associated with the cooling tower. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a cooling tower with adjustable packing height for thermal power plants.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cooling tower for thermal power plants with adjustable packing height includes a tower body, and a support, a rotating adjustment component, packing, and a spraying device disposed within the tower body;

[0008] The support includes a fixed frame and a movable frame. The fixed frame is fixedly installed on the inner wall of the tower body. The movable frame is connected to the fixed frame through at least one of the rotating adjustment components, so that the rotating adjustment component can adjust the axial distance between the movable frame and the fixed frame by rotation.

[0009] A first filling area is formed on the fixed frame, and a second filling area is formed on the movable frame. Along the axial direction of the tower body, the projections of the first filling area and the second filling area coincide.

[0010] The packing includes a first packing and a second packing. The first packing fills the first filling area, and the second packing fills the second filling area. The first packing and the second packing are slidably connected along the axial direction of the tower body.

[0011] Preferably, the rotation adjustment component includes a first connecting seat, a second connecting seat, a threaded rod, and a threaded sleeve;

[0012] The first connecting seat and the second connecting seat are respectively fixedly installed on the fixed frame and the movable frame;

[0013] The threaded rod is fixedly installed on the first connecting seat, and the threaded sleeve is rotatably installed on the second connecting seat and threadedly connected to the threaded rod.

[0014] Preferably, the movable frame is provided in several groups, and the several groups of movable frames are distributed in a circular array about the central axis of the cooling tower.

[0015] Preferably, each set of movable frames includes a sector-shaped support and a rectangular sector support;

[0016] The sector-shaped support and the annular sector support are distributed radially along the cooling tower at intervals, so that a channel is formed between adjacent sector-shaped support and annular sector support.

[0017] Preferably, the outer diameter of the annular sector bracket is R;

[0018] The outer diameter of the sector-shaped support ranges from 0.7R to 0.8R.

[0019] The radial width of the channel ranges from 0.8m to 2m.

[0020] Preferably, each of the fan-shaped area brackets is provided with a rotation adjustment component at its corner position;

[0021] And / or,

[0022] Each of the aforementioned annular sector supports is equipped with a rotating adjustment component on its arc-shaped rod.

[0023] Preferably, the first packing includes a plurality of spaced-apart first hexagonal prism cylinders, and the ends of two adjacent first hexagonal prism cylinders away from the second packing are connected by a connecting strip;

[0024] The second packing material comprises a plurality of interconnected second hexagonal prism cylinders.

[0025] Preferably, the filler is made of plastic material;

[0026] And / or,

[0027] The movable frame is made of aluminum alloy or fiberglass.

[0028] Preferably, the distance from the bottom of the spraying device to the top of the filler is in the range of 0.8m to 1.2m;

[0029] And / or,

[0030] The maximum height of the filler is in the range of 1m to 1.5m.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] This utility model provides a cooling tower with adjustable packing height for thermal power plants. By installing a fixed frame on the inner wall of the tower body, and connecting the movable frame to the fixed frame through a rotating adjustment component, the first and second packing materials can slide along the axial direction of the tower body. The axial height between the movable and fixed frames can be adjusted by rotating the adjustment component, thereby adjusting the overall height of the packing material to adapt to different climates and prevent the packing material from freezing at the bottom when the ambient temperature is too low, which could lead to the collapse of the entire packing material. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the internal structure of a cooling tower, one example of the present invention.

[0035] Figure 2 This is a structural schematic diagram of one example of a support, a rotation adjustment element, and a packing.

[0036] Figure 3 for Figure 2 A partial cross-sectional diagram.

[0037] Figure 4 for Figure 3 An enlarged diagram of position D in the middle.

[0038] Figure 5 for Figure 2 A schematic diagram of the structure of the central support.

[0039] Figure 6 for Figure 5 A top-down view.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Tower body; 2. Support frame; 21. Fixed frame; 210. First filling zone; 22. Movable frame; 220. Second filling zone; 221. Sector-shaped zone support; 222. Annular sector support; 3. Rotating adjustment component; 31. First connecting seat; 32. Second connecting seat; 33. Threaded rod; 34. Threaded sleeve; 4. Packing material; 41. First packing material; 411. First hexagonal prism tube; 412. Connecting strip; 42. Second packing material; 421. Second hexagonal prism tube; 5. Spraying device; 6. Channel. Detailed Implementation

[0042] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] See Figures 1 to 6This utility model provides a cooling tower with adjustable packing height for thermal power plants, including a tower body 1, and a support 2, a rotating adjustment component 3, packing 4, and a spraying device 5 disposed within the tower body 1. The support 2 includes a fixed frame 21 and several movable frames 22. The fixed frame 21 is fixedly installed on the inner wall of the tower body 1. The movable frames 22 are connected to the fixed frame 21 via at least one rotating adjustment component 3, allowing the rotating adjustment component 3 to adjust the axial distance between the movable frames 22 and the fixed frame 21 by rotation. A first filling area 210 is formed on the fixed frame 21, and a second filling area 220 is formed on the movable frames 22. The projections of the first filling area 210 and the second filling area 220 coincide along the axial direction of the tower body 1. The packing 4 includes a first packing 41 and a second packing 42. The first packing 41 fills the first filling area 210, and the second packing 42 fills the second filling area 220. The first packing 41 and the second packing 42 are slidably connected along the axial direction of the tower body 1.

[0046] It is easy to understand that in the above scheme, by installing the fixed frame 21 on the inner wall of the tower body 1, and the movable frame 22 being connected to the fixed frame 21 through the rotating adjustment component 3, the first packing 41 and the second packing 42 can slide along the axial direction of the tower body 1. Thus, the axial height between the movable frame 22 and the fixed frame 21 can be adjusted by rotating the adjustment component 3, thereby adjusting the overall height of the packing 4 to adapt to different climates and prevent the packing 4 from freezing at the bottom when the ambient temperature is too low, which would lead to the overall collapse of the packing 4.

[0047] For example, when the external ambient temperature is relatively low (i.e., the temperature of the cold air supplied from the bottom of the tower is too low, such as below -10 degrees Celsius), the axial height between the movable frame 22 and the fixed frame 21 can be reduced by adjusting the rotating adjustment component 3, thereby reducing the overall height of the packing 4. This allows the cold air to quickly contact the coolant supplied from the top of the tower, preventing the cold air from freezing at the bottom of the packing 4 due to prolonged contact time with the coolant, thus preventing the packing 4 from collapsing and ensuring the safe and stable operation of the cooling tower and the units connected to it. When the external ambient temperature is relatively high (i.e., the temperature of the cold air supplied from the bottom of the tower is relatively high, such as above zero), the axial height between the movable frame 22 and the fixed frame 21 can be increased by adjusting the rotating adjustment component 3, thereby increasing the overall height of the packing 4, increasing the contact time between the cold air and the coolant, and increasing the heat exchange efficiency.

[0048] See Figure 1 The distance from the bottom of the spray device 5 to the top of the packing structure (i.e., Figure 1 The value of S1 shown can be set to 0.8m, 0.9m, 1m, 1.1m, or 1.2m. It should be understood that the value of S1 should satisfy the condition: 0.8m ≤ S1 ≤ 1.2m.

[0049] Furthermore, the maximum height of the packing structure (i.e., the maximum distance between the upper and lower end faces of packing 4, see...) Figure 1 S2 shown can be set to 1m, 1.25m, or 1.5m. It should be understood that the range of values ​​for S2 should satisfy: 1m ≤ S1 ≤ 1.5m.

[0050] See Figures 1 to 4 The rotating adjustment component 3 includes a first connecting seat 31, a second connecting seat 32, a threaded rod 33, and a threaded sleeve 34; wherein the first connecting seat 31 and the second connecting seat 32 are respectively fixedly installed on the fixed frame 21 and the movable frame 22; the threaded rod 33 is fixedly installed on the first connecting seat 31, and the threaded sleeve 34 is rotatably installed on the second connecting seat 32 and is threadedly connected to the threaded rod 33.

[0051] It is easy to understand that when the threaded sleeve 34 is driven to rotate manually or by a motor gear mechanism, it can be driven to move up or down relative to the threaded rod 33, thereby adjusting the distance between the movable frame 22 and the fixed frame 21. It is worth noting that when using a motor gear mechanism, the motor gear mechanism can be sealed and installed on the second connecting seat 32, with the driven gear fixedly connected to the upper end of the threaded sleeve 34, and the driving wheel driven by the motor can then drive the driven wheel to rotate.

[0052] See Figures 1 to 6 The movable frame 22 is set in several groups, and the several groups of movable frames 22 are distributed in a circular array about the central axis of the cooling tower.

[0053] Specifically, each set of movable frames 22 includes a sector-shaped support 221 and an annular sector support 222; the sector-shaped support 221 and the annular sector support 222 are distributed sequentially at intervals along the radial direction of the cooling tower so that a channel 6 is formed between adjacent sector-shaped support 221 and annular sector support 222.

[0054] Furthermore, if the outer diameter of the annular sector bracket 222 is R, then the outer diameter of the sector bracket 221 can be set to 0.7R, 0.75R, or 0.8R. It should be understood that the outer diameter of the sector bracket 221 can be in the range of 0.7R to 0.8R.

[0055] It should be understood that the outer diameter R of the annular sector support 222 is equal to the inner diameter of the structure where the cooling tower packing 4 is installed.

[0056] To facilitate maintenance by personnel, the radial width of channel 6 can be set to 0.8m, 0.9m, 1m, 1.5m, or 2m. It should be understood that the radial width of channel 6 can be set within the range of 0.8m to 2m.

[0057] See Figure 5Each sector bracket 221 has a rotation adjustment component 3 at its corner position; each annular sector bracket 222 has a rotation adjustment component 3 on its arc-shaped rod to ensure the stability of the installation of the sector bracket 221 and the annular sector bracket 222.

[0058] It should be understood that the annular sector bracket 222 may have a rotation adjustment element 3 installed only on the inner side (i.e., near the center) of the arc-shaped rod, or it may have a rotation adjustment element 3 installed only on the outer side (i.e., away from the center) of the arc-shaped rod.

[0059] It is worth noting that on the sector bracket 221, "corner position" indicates the position where the sector bracket 221 turns.

[0060] See Figures 2 to 4 In order to facilitate the relative sliding of the first packing 41 and the second packing 42, while not affecting the flow of fluid through the first packing 41 and the second packing 42, the first packing 41 includes a plurality of spaced first hexagonal prism cylinders 411, and the ends of two adjacent first hexagonal prism cylinders 411 away from the second packing 42 are connected by a connecting strip 412; the second packing 42 includes a plurality of connected second hexagonal prism cylinders 421.

[0061] Specifically, the filler 4 is made of plastic materials; for example: PE, PP, PVC, PTFE, PET / PBT, PC, PV, etc. The movable frame 22 is made of aluminum alloy.

[0062] It is easy to understand that the packing 4 and the movable frame 22 are made of lightweight materials, which makes it easier to reduce the weight of the movable frame 22 and the second packing 42, and thus facilitates the adjustment and installation of both.

[0063] Of course, in other embodiments, the movable frame 22 can also be made of fiberglass or galvanized steel sheet. The corresponding fixed frame 21 can also be made of fiberglass or galvanized steel sheet.

[0064] Furthermore, it is worth noting that the fixed frame 21 and the movable frame 22 can also be equipped with support structures for supporting the first packing 41 and the second packing 42, respectively, to ensure the stability of the first packing 41 and the second packing 42. The support structures can be equipped with arc rods, support ropes, etc. However, it should be noted that the projection of the support structure along the cooling tower axis should not coincide with the first hexagonal prism cylinder 411, so as not to affect the relative sliding of the first packing 41 and the second packing 42.

[0065] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cooling tower with adjustable fill height for a thermal power plant, characterized in that, It includes a tower body (1), and a support (2), a rotation adjustment component (3), a packing (4), and a spraying device (5) disposed within the tower body (1); The support (2) includes a fixed frame (21) and a movable frame (22). The fixed frame (21) is fixedly installed on the inner wall of the tower body (1). The movable frame (22) is connected to the fixed frame (21) through at least one of the rotating adjustment components (3) so that the rotating adjustment component (3) can adjust the axial distance between the movable frame (22) and the fixed frame (21) by rotation. A first filling area (210) is formed on the fixed frame (21), and a second filling area (220) is formed on the movable frame (22). Along the axial direction of the tower body (1), the projection of the first filling area (210) and the projection of the second filling area (220) coincide. The packing (4) includes a first packing (41) and a second packing (42). The first packing (41) is filled in the first filling area (210), and the second packing (42) is filled in the second filling area (220). The first packing (41) and the second packing (42) are slidably connected along the axial direction of the tower body (1).

2. A cooling tower with adjustable fill height for a thermal power plant according to claim 1, characterized in that, The rotation adjustment component (3) includes a first connecting seat (31), a second connecting seat (32), a threaded rod (33), and a threaded sleeve (34). The first connecting seat (31) and the second connecting seat (32) are respectively fixedly installed on the fixed frame (21) and the movable frame (22); The threaded rod (33) is fixedly installed on the first connecting seat (31), and the threaded sleeve (34) is rotatably installed on the second connecting seat (32) and threadedly connected to the threaded rod (33).

3. A cooling tower with adjustable packing height for thermal power plants according to claim 1 or 2, characterized in that, The movable frame (22) is provided in several groups, and the several groups of movable frames (22) are distributed in a circular array about the central axis of the cooling tower.

4. A cooling tower with adjustable packing height for thermal power plants according to claim 3, characterized in that, Each set of movable frames (22) includes a sector support (221) and an annular sector support (222); The sector-shaped support (221) and the annular sector support (222) are distributed sequentially at intervals along the radial direction of the cooling tower, so that a channel (6) is formed between adjacent sector-shaped supports (221) and annular sector supports (222).

5. A cooling tower with adjustable packing height for thermal power plants according to claim 4, characterized in that, The outer diameter of the annular sector bracket (222) is R; The outer diameter of the sector support (221) ranges from 0.7R to 0.8R; The radial width of the channel (6) ranges from 0.8m to 2m.

6. A cooling tower with adjustable packing height for thermal power plants according to claim 4, characterized in that, Each of the sector brackets (221) is provided with a rotation adjustment component (3) at the corner position; And / or, Each of the annular sector brackets (222) is provided with a rotating adjustment element (3) on its arc-shaped rod.

7. A cooling tower with adjustable fill height for a thermal power plant according to claim 1, characterized in that, The first packing (41) includes a plurality of spaced first hexagonal prism tubes (411), and the ends of two adjacent first hexagonal prism tubes (411) away from the second packing (42) are connected by a connecting strip (412); The second packing (42) comprises a plurality of connected second hexagonal prism tubes (421).

8. A cooling tower with adjustable packing height for thermal power plants according to claim 7, characterized in that, The filler (4) is made of plastic material; And / or, The movable frame (22) is made of aluminum alloy material.

9. A cooling tower with adjustable fill height for a thermal power plant according to claim 1, characterized in that, The distance from the bottom of the spraying device (5) to the upper end of the filler (4) is 0.8m-1.2m; And / or, The maximum height of the filler (4) is 1m-1.5m.

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