Air cooling tower and air precooling system

Abstract

The application discloses an air cooling tower and an air precooling system, and belongs to the technical field of cooling devices. The air cooling tower comprises a tower body and a filtering device. The tower body is provided with a cooling cavity and a water outlet communicating with the cooling cavity. The filtering device comprises a first filtering piece arranged in the cooling cavity. The first filtering piece comprises a top wall and a side wall connected with each other. The top wall and the side wall are arranged at an angle and enclose a containing groove. The containing groove is open to the top wall. The open end of the containing groove faces the water outlet. A plurality of first filtering holes are formed in the side wall and the top wall. After the first filtering piece is arranged, the first filtering piece can filter the cooling water. When large scale water scale at the positions such as the pipeline interface of the air cooling tower falls, the large scale water scale cannot enter the water outlet and the circulating pipeline under the action of the first filtering piece, the water outlet and the circulating pipeline are prevented from being blocked, the cooling water can be ensured to return to the water storage pool, and the stable operation of the air precooling system is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of cooling devices, and particularly relates to an air cooling tower and an air precooling system. Background Technology

[0002] The air precooling system at the front end of the air separation unit mainly includes: air cooling tower, circulating water system, nitrogen cooling tower, cooling water pump, chilled water pump and chiller, etc.

[0003] The cooled water, after being washed in the air cooling tower, flows back into the circulating water system from the drain at the bottom for continued cooling and reuse. The circulating water system includes circulating pipes and a water storage tank, with the circulating pipes connecting the drain and the water storage tank.

[0004] Because air and water contain a lot of impurities, these impurities rapidly decompose to form calcium carbonate due to the high temperatures in the cooling tower. Over time, this calcium carbonate accumulates on the packing material and pipe joints of the air cooling tower, forming large pieces of scale. When these large scale pieces fall off, they clog drain outlets and circulation pipes, hindering the flow of cooling water back to the storage tank and causing the air precooling system to malfunction. Utility Model Content

[0005] This application aims to at least partially solve the technical problem that the drain outlet of an air cooling tower and the circulation pipe connecting to the drain outlet are easily clogged by large pieces of scale. To this end, this application provides an air cooling tower and an air precooling system.

[0006] In a first aspect, an air cooling tower provided in the embodiments of this application includes:

[0007] The tower body has a cooling chamber and a drain outlet communicating with the cooling chamber;

[0008] A filtration device includes a first filter element disposed within the cooling chamber. The first filter element includes a connected top wall and a side wall, which are angled together and enclose a receiving groove. The opening of the receiving groove is opposite to the top wall. The opening faces the drain outlet. Multiple first filter holes are provided on both the side wall and the top wall.

[0009] In some embodiments, the first filter element has a plurality of sidewalls connected end to end, and each of the sidewalls is connected to the top wall.

[0010] In some embodiments, the top wall and the side walls are both rectangular, the first filter element has four side walls, the four side walls are respectively connected to the four sides of the top wall, and the four side walls are perpendicular to the top wall, with adjacent two side walls being perpendicular to each other.

[0011] In some embodiments, the air cooling tower further includes a second filter element disposed within the cooling chamber, the second filter element being connected to the first filter element and the second filter element shielding the opening; the second filter element has a plurality of second filter holes, the second filter holes being smaller than the first filter holes.

[0012] In some embodiments, the first filter element and the second filter element are detachably connected.

[0013] In some embodiments,

[0014] The top wall includes a plurality of first rods and a plurality of second rods, the plurality of first rods being spaced apart and arranged in parallel, the plurality of second rods being spaced apart and arranged in parallel, and the first rods and the second rods being perpendicular and fixedly connected;

[0015] The sidewall includes a plurality of third rods and a plurality of fourth rods, the plurality of third rods being spaced apart and arranged in parallel, the plurality of fourth rods being spaced apart and arranged in parallel, and the third rods and fourth rods being perpendicular and fixedly connected;

[0016] The first filter element further includes a first connector, a second connector, and a third connector; the first connector is simultaneously connected to multiple third rods, and the first connector is also connected to the tower body; the second connector is connected to the fourth rod and the first rod; the third connector is connected to the second rod and the fourth rod.

[0017] In some embodiments, the first connector is bolted to the tower body.

[0018] In some embodiments, along the length direction of the second rod, a plurality of first clearance holes are spaced apart on the second rod, and a plurality of first rods are respectively inserted into the plurality of first clearance holes and welded to the second rod;

[0019] Along the length of the third rod, a plurality of second clearance holes are spaced apart on the third rod, and a plurality of fourth rods are respectively inserted into the plurality of second clearance holes and welded to the third rod.

[0020] In some embodiments, the first filter element and the tower body are detachably connected.

[0021] Secondly, an air precooling system provided in this application includes the air cooling tower described in the first aspect.

[0022] This utility model has at least the following beneficial effects:

[0023] After the air cooling tower is equipped with a first filter element, it filters the cooling water. When large pieces of scale fall from the packing material and pipe interfaces of the air cooling tower, the first filter element prevents them from entering the drain outlet and circulation pipes, thus preventing blockage and ensuring that the cooling water can flow back to the storage tank, guaranteeing the stable operation of the air precooling system. Because the bottom and side walls of the first filter element are angled, the cooling water can flow out in different directions, including through the top wall and side walls, ensuring sufficient flow rate. Even when the top wall is blocked by accumulated scale, the cooling water can still flow back through the first filter holes on the side wall, maintaining the required flow rate. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an air cooling tower in one or more embodiments of this application is shown.

[0026] Figure 2 A schematic diagram of the structure of a filtering device in some embodiments of this application is shown.

[0027] Figure 3 Schematic diagrams of the filtering device in other embodiments of this application are shown.

[0028] Figure 4 A schematic diagram of the structure of the second filter element of the filtering device in some embodiments of this application is shown.

[0029] Figure 5 A schematic diagram of the top wall of the first filter element of the filtration device in some embodiments of this application is shown.

[0030] Figure 6 A schematic diagram of the structure of the sidewall of the first filter element of the filtering device in some embodiments of this application is shown.

[0031] Figure label:

[0032] 1000-Air cooling tower, 200-Tower body, 200a-Cooling chamber, 200b-Drain outlet, 100-Filter device, 110-First filter element, 110a-Receiving tank, 110b-Opening, 110c-First filter hole, 111-Top wall, 1111-First rod, 1112a-First clearance hole, 1112-Second rod, 112-Side wall, 1121-Third rod, 1121a-Second clearance hole, 1122-Fourth rod, 1131-First connector, 1132-Second connector, 1133-Third connector, 120-Second filter element, 120a-Second filter hole. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0037] In related technologies, the drainage outlet of an air cooling tower and the circulation pipe connected to it are prone to blockage by large pieces of scale. This application provides an air cooling tower and an air precooling system, which can at least partially solve the problem of the air cooling tower's drainage outlet and the circulation pipe connected to it being easily blocked by large pieces of scale.

[0038] This application is described below with reference to the accompanying drawings and specific embodiments:

[0039] like Figure 1 and Figure 2 As shown, the air cooling tower 1000 includes a tower body 200 and a filter device 100. The tower body 200 has a cooling chamber 200a and a drain outlet 200b communicating with the cooling chamber 200a. The filter device 100 includes a first filter element 110 disposed in the cooling chamber 200a. The first filter element 110 includes a connected top wall 111 and a side wall 112, which are angled together and enclose a receiving groove 110a. The opening 110b of the receiving groove 110a is opposite to the top wall 111. The opening 110b faces the drain outlet 200b. Multiple first filter holes 110c are provided on both the side wall 112 and the top wall 111.

[0040] The structure and cooling principle of the tower body 200 are known to those skilled in the art and will not be described in detail here. The tower body 200 may include components such as a shell, packing, and a cooling water distributor. The shell has a cooling chamber 200a and a drain outlet 200b, and the packing, cooling water distributor, etc. are disposed in the cooling chamber 200a.

[0041] The drain outlet 200b is located at the bottom of the tower body 200. The cooling water inside the tower body 200 flows back to the water storage tank through the drain outlet 200b and the circulation pipe connected to the drain outlet 200b.

[0042] The top wall 111 and side wall 112 of the first filter element 110 are arranged at an angle, which can be a right angle, an acute angle, or an obtuse angle. The angled arrangement of the top wall 111 and side wall 112 of the first filter element 110 prevents them from being on the same plane, allowing the top wall 111 of the first filter element 110 to be located away from the drain outlet 200b. The bottom wall and side wall 112 are fixedly connected, for example, by welding or snap-fitting, and are not limited in this application.

[0043] The top wall 111 and the side wall 112 together form a receiving groove 110a. The receiving groove 110a has an opening 110b. The opening 110b of the receiving groove 110a is arranged opposite to the top wall 111 and the opening 110b is arranged downward. The opening 110b is opposite to the drain outlet 200b. With this design, the first filter element 110 is covered on the drain outlet 200b.

[0044] Multiple first filter holes 110c are provided on the top wall 111 and the side wall 112 so that the cooling water in the cooling chamber 200a can flow out through the first filter holes 110c.

[0045] The first filter element 110 may or may not be connected to the tower body 200, and this application does not impose any restrictions on it.

[0046] After the air cooling tower 1000 is equipped with the first filter element 110, the first filter element 110 can filter the cooling water. When large pieces of scale fall off the packing and the pipe interfaces of the air cooling tower 1000, the first filter element 110 prevents them from entering the drain outlet 200b and the circulation pipe, thus preventing blockage of the drain outlet 200b and the circulation pipe and ensuring that the cooling water can flow back to the storage tank, ensuring the stable operation of the air precooling system. Because the bottom wall and side wall 112 of the first filter element 110 are set at an angle, the cooling water can flow out in different directions, either through the top wall 111 or through the side wall 112, ensuring the flow rate of the cooling water. Even when a large amount of scale accumulates on the top wall 111 and becomes blocked, the cooling water can still flow back through the first filter hole 110c on the side wall 112, ensuring the flow rate of the cooling water.

[0047] In some embodiments, the first filter element 110 has a plurality of sidewalls 112 connected end to end, and each of the plurality of sidewalls 112 is connected to the top wall 111.

[0048] The first filter element 110 may have one sidewall 112, which is annular. Alternatively, the first filter element 110 may have multiple sidewalls 112, which are connected end-to-end to form an annular shape. A top wall 111 is located at one end of each sidewall 112 and is connected to all sidewalls 112. Having multiple sidewalls 112 allows each sidewall 112 to be processed separately and then assembled to form an annular shape, reducing the processing difficulty of the first filter element 110.

[0049] like Figure 2 As shown, in some embodiments, the top wall 111 and the side walls 112 are both rectangular, and the first filter element 110 has four side walls 112. The four side walls 112 are respectively connected to the four sides of the top wall 111, and the four side walls 112 are perpendicular to the top wall 111. The two adjacent side walls 112 are perpendicular to each other.

[0050] The rectangle can be either a square or a rectangle. The four side walls 112 are connected end to end, with adjacent side walls 112 arranged perpendicularly to each other, and all four side walls 112 are perpendicular to the top wall 111. After the side walls 112 are connected to each other and to the top wall 111, the first filter element 110 is in the shape of a cuboid or a cube.

[0051] like Figure 3 and Figure 4 As shown, in some embodiments, the air cooling tower 1000 further includes a second filter element 120 disposed in the cooling chamber 200a. The second filter element 120 is connected to the first filter element 110, and the second filter element 120 covers the opening 110b of the receiving groove 110a. The second filter element 120 is provided with a plurality of second filter holes 120a, which are smaller than the first filter holes 110c.

[0052] The second filter hole 120a is smaller than the first filter hole 110c. In other words, the size of the second filter hole 120a is smaller than the size of the first filter hole 110c. The second filter hole 120a can intercept smaller scale, allowing smaller scale to pass through the first filter hole 110c and be intercepted by the second filter hole 120a, preventing it from entering the drain outlet 200b and the circulation pipe.

[0053] In some embodiments, both the first filter hole 110c and the second filter hole 120a are square, and the side length of the second filter hole 120a is smaller than the length of the first filter hole 110c.

[0054] In some embodiments, both the first filter hole 110c and the second filter hole 120a are circular, and the diameter of the second filter hole 120a is smaller than the diameter of the first filter hole 110c.

[0055] In some embodiments, the first filter element 110 and the second filter element 120 are detachably connected. This design allows the second filter element 120 to be removed from the first filter element 110 when a significant amount of scale accumulates in the receiving tank 110a, facilitating scale removal. The detachable connection can be achieved in various ways, such as bolted connections or snap-fit ​​connections.

[0056] like Figure 2As shown, in some embodiments, the top wall 111 includes a plurality of first rods 1111 and a plurality of second rods 1112. The plurality of first rods 1111 are spaced apart and arranged in parallel, and the plurality of second rods 1112 are spaced apart and arranged in parallel. The first rods 1111 and the second rods 1112 are perpendicularly and fixedly connected. The side wall 112 includes a plurality of third rods 1121 and a plurality of fourth rods 1122. The plurality of third rods 1121 are spaced apart and arranged in parallel, and the plurality of fourth rods 1122 are spaced apart and arranged in parallel. The third rods 1121 and the fourth rods 1122 are perpendicularly and fixedly connected. The first filter element 110 also includes a first connector 1131, a second connector 1132 and a third connector 1133. The first connector 1131 is connected to the plurality of third rods 1121 and is also connected to the tower body 200. The second connector 1132 is connected to the fourth rods 1122 and the first rods 1111, and the third connector 1133 is connected to the second rods 1112 and the fourth rods 1122.

[0057] Multiple first rods 1111 and multiple second rods 1112 are fixedly connected to form a top wall 111, and multiple third rods 1121 and multiple fourth rods 1122 are fixedly connected to form a side wall 112. Both the top wall 111 and the side wall 112 are mesh-like, and the first filter hole 110c is a mesh hole on the mesh plate. A first connector 1131 is used to fix multiple third rods 1121 together so that multiple side walls 112 are connected end to end to form a ring. A second connector 1132 is used to connect the fourth rod 1122 and the first rod 1111 together so that some side walls 112 are connected to the top wall 111. A third connector 1133 is used to connect the second rod 1112 and the fourth rod 1122 so that other side walls 112 are connected to the top wall 111.

[0058] like Figure 2 As shown, in some embodiments, four sidewalls 112, four first connectors 1131, two second connectors 1132, and two third connectors 1133 are provided. The four first connectors 1131 are respectively disposed on the four edges formed by the four sidewalls 112, and the first connectors 1131 fix the third rods 1121 of two adjacent sidewalls 112 together. The lower ends of the four first connectors 1131 are all connected to the tower body 200. The two second connectors 1132 are respectively disposed on the two edges formed by two of the sidewalls 112 and the top wall 111, fixing the fourth rod 1122 of the sidewall 112 and the first rod 1111 of the top wall 111 together. The two third connectors 1133 are respectively disposed on the two edges formed by the other two sidewalls 112 and the top wall 111, fixing the second rod 1112 of the top wall 111 and the fourth rod 1122 of the sidewall 112 together. The fixing connection method is varied, such as welding.

[0059] In some embodiments, the first connector 1131, the second connector 1132, and the third connector 1133 are all angle steel.

[0060] In some embodiments, to facilitate the separation of the first filter element 110 and the tower body 200, the first connector 1131 is connected to the tower body 200 by bolts.

[0061] like Figure 5 As shown, in some embodiments, along the length of the second rod 1112, a plurality of first clearance holes 1112a are spaced apart on the second rod 1112, and a plurality of first rods 1111 respectively pass through the plurality of first clearance holes 1112a and are welded to the second rod 1112. With this design, the first clearance holes 1112a limit the first rods 1111 and help to reduce the thickness of the top wall 111.

[0062] like Figure 6 As shown, in some embodiments, a plurality of second clearance holes 1121a are spaced apart along the length of the third rod 1121, and a plurality of fourth rods 1122 are respectively inserted into the plurality of second clearance holes 1121a and welded to the third rod 1121. With this design, the second clearance holes 1121a limit the fourth rods 1122 and help to reduce the thickness of the sidewall 112.

[0063] In some embodiments, the first filter element 110 and the tower body 200 are detachably connected. The detachable connection can be achieved in various ways, such as bolted connections or snap-fit ​​connections. This detachable connection allows the first filter element 110 to be removed from the tower body 200, facilitating the cleaning of scale on the first filter element 110 by operators. The detachable connection can be achieved through the top wall 111, side wall 112, first connector 1131, second connector 1132, or third connector 1133 of the first filter element 110; no limitation is made in this application.

[0064] Based on the same inventive concept, this application also provides an air precooling system, which includes the air cooling tower 1000 described above.

[0065] Since the air precooling system includes the aforementioned air cooling tower 1000, it naturally possesses all the beneficial effects of the air cooling tower 1000, which will not be elaborated upon here.

[0066] In some embodiments, the air precooling system further includes a circulating water system, which includes a circulating pipe, a water storage tank, a cooling tower, and a circulating water pump. The circulating pipe connects the water storage tank and the drain outlet 200b, returning cooling water to the water storage tank, and the circulating water pump sends water from the water storage tank into the cooling tower for cooling.

[0067] In some embodiments, the air precooling system further includes a nitrogen cooling tower and a chiller. The nitrogen cooling tower draws water from a water storage tank and cools the water flow. After cooling, the water is sent to the chiller for further cooling, and then to the air cooling tower 1000. The specific structures of the nitrogen cooling tower and the chiller are known to those skilled in the art and will not be described in detail here.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0069] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0070] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An air cooling tower, characterized in that, include: The tower body (200) has a cooling chamber (200a) and a drain outlet (200b) communicating with the cooling chamber (200a); A filtration device (100) includes a first filter element (110) disposed in the cooling chamber (200a). The first filter element (110) includes a connected top wall (111) and a side wall (112). The top wall (111) and the side wall (112) are angled and enclose a receiving groove (110a). The opening (110b) of the receiving groove (110a) is opposite to the top wall (111). The opening (110b) faces the drain outlet (200b). A plurality of first filter holes (110c) are provided on both the side wall (112) and the top wall (111).

2. The air cooling tower according to claim 1, characterized in that, The first filter element (110) has a plurality of sidewalls (112), which are connected end to end, and all of the sidewalls (112) are connected to the top wall (111).

3. The air cooling tower according to claim 2, characterized in that, The top wall (111) and the side walls (112) are both rectangular. The first filter element (110) has four side walls (112). The four side walls (112) are respectively connected to the four sides of the top wall (111), and the four side walls (112) are perpendicular to the top wall (111). Two adjacent side walls (112) are perpendicular to each other.

4. The air cooling tower according to any one of claims 1-3, characterized in that, The air cooling tower (1000) further includes a second filter element (120) disposed in the cooling chamber (200a), the second filter element (120) being connected to the first filter element (110), and the second filter element (120) covering the opening (110b); the second filter element (120) is provided with a plurality of second filter holes (120a), the second filter holes (120a) being smaller than the first filter holes (110c).

5. The air cooling tower according to claim 4, characterized in that, The first filter element (110) and the second filter element (120) are detachably connected.

6. The air cooling tower according to any one of claims 1-3, characterized in that, The top wall (111) includes a plurality of first rods (1111) and a plurality of second rods (1112). The plurality of first rods (1111) are spaced apart and arranged in parallel, and the plurality of second rods (1112) are spaced apart and arranged in parallel. The first rods (1111) and the second rods (1112) are perpendicular and fixedly connected. The sidewall (112) includes a plurality of third rods (1121) and a plurality of fourth rods (1122). The plurality of third rods (1121) are spaced apart and arranged in parallel, and the plurality of fourth rods (1122) are spaced apart and arranged in parallel. The third rods (1121) and the fourth rods (1122) are perpendicular and fixedly connected. The first filter element (110) further includes a first connector (1131), a second connector (1132), and a third connector (1133); the first connector (1131) is simultaneously connected to a plurality of the third rods (1121), and the first connector (1131) is also connected to the tower body (200); the second connector (1132) is connected to the fourth rod (1122) and the first rod (1111); the third connector (1133) is connected to the second rod (1112) and the fourth rod (1122).

7. The air cooling tower according to claim 6, characterized in that, The first connector (1131) is connected to the tower body (200) by bolts.

8. The air cooling tower according to claim 6, characterized in that, Along the length direction of the second rod (1112), a plurality of first clearance holes (1112a) are spaced apart on the second rod (1112), and a plurality of first rods (1111) are respectively inserted into the plurality of first clearance holes (1112a) and welded to the second rod (1112); Along the length direction of the third rod (1121), a plurality of second clearance holes (1121a) are provided at intervals on the third rod (1121), and a plurality of fourth rods (1122) are respectively inserted into the plurality of second clearance holes (1121a) and welded to the third rod (1121).

9. The air cooling tower according to any one of claims 1-3, characterized in that, The first filter element (110) and the tower body (200) are detachably connected.

10. An air precooling system, characterized in that, The air cooling tower (1000) includes any one of claims 1-9.

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