Heat exchange system for closed cooling tower

Abstract

The utility model discloses a heat exchange system for a closed cooling tower, which comprises the closed cooling tower, a pump body, a heat exchanger body and a filtering component, the filtering component comprises a filtering box body, a first filtering piece and a limiting component, and water flow in the closed cooling tower flows into a water inlet of the filtering box body from a water outlet end and enters the filtering box body; then, the water flow is filtered through the first filtering piece, particulate matter brought up in the cooling water circulation process is intercepted, and it is guaranteed that no obvious particulate matter exists in the water flow entering the pump body and the heat exchanger body; therefore, the defect that in the design of the cooling tower with the external plate heat exchanger, particulate matter easily enters an inner channel of the plate heat exchanger and an inner structural gap of the water pump, and consequently a flow channel is blocked is overcome, the technical problem is solved, and the technical effect of maintaining stable and lasting operation of the whole system is achieved.

Description

Technical Field

[0001] This utility model relates to the field of closed-loop cooling tower technology, and specifically to a heat exchange system for closed-loop cooling towers. Background Technology

[0002] A closed-circuit cooling tower is a device that places a tubular heat exchanger inside the tower and ensures a cooling effect through heat exchange between circulating air, water sprayed outside the tubes, and circulating water inside the tubes.

[0003] There is a type of closed-loop cooling tower that uses plate heat exchangers. Unlike closed-loop cooling towers that use conventional heat exchange coils, in this type of closed-loop cooling tower, the plate heat exchanger is located outside the cooling tower. Due to the structural design of multiple heat exchange plates in the plate heat exchanger, the heat exchange area is increased for the same volume, thus improving the heat exchange efficiency.

[0004] However, unlike the heat exchange coil design, in the above technology, the liquid in the cooling tower flows back into the cooling tower through external pipes, plate heat exchangers, and water pumps. During the circulation process, the cooling water is prone to being mixed with particulate matter. The above circulation structure has parts that are easily blocked, such as narrow internal channels of the plate heat exchanger and gaps in the internal structure of the water pump. When particulate matter enters these areas, it can easily block the flow channels. Utility Model Content

[0005] To address the technical problems identified in the background section of the prior art, this utility model provides a heat exchange system for closed-loop cooling towers. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] A heat exchange system for a closed-loop cooling tower includes a pump body and a heat exchanger body disposed between the inlet and outlet ends of the closed-loop cooling tower. The heat exchange system further includes a filter assembly disposed between the outlet end and the pump body. The filter assembly includes:

[0007] The filter housing has an inlet and an outlet on its opposite horizontal sides, and a slot is provided on the upper part of the filter housing.

[0008] The first filter element can be placed in the filter box through a slot to filter the water flow from the inlet to the outlet. At this time, the first filter element is located in the slot and the inner wall of the slot abuts against the first filter element.

[0009] A seal that is inserted into a slot to seal the slot;

[0010] The limiting assembly includes a limiting plate, which is rotatably connected to the filter housing and can move to limit the position of the slot and the seal.

[0011] Furthermore, the upper part of the filter box has two slots, one slot away from the water inlet and the other slot close to the water inlet. The filter box also includes a second filter element, which has a higher filtration accuracy than the first filter element. The second filter element can be placed in the filter box through the slot close to the water inlet. There are two sealing components and two limiting components. Each slot has a corresponding sealing component for sealing the slot and a limiting component for limiting the sealing component.

[0012] Furthermore, both the first and second filter elements are plate-shaped, and are placed in the filter housing at an angle. The upper part of the first filter element is closer to the water inlet than its lower part, and the second filter element is parallel to the first filter element.

[0013] Furthermore, an auxiliary inlet hole is provided at the bottom of one side of the filter box, and a sealing plate is provided at the auxiliary inlet hole. The sealing plate is detachably connected to the filter box and is used to seal the auxiliary inlet hole.

[0014] Furthermore, the filter assembly also includes two collection boxes, both fixedly connected to the side of the sealing plate facing the filter box, one collection box being located below the first filter element and the other collection box being located below the second filter element, and both collection boxes being able to pass through the inlet auxiliary hole.

[0015] Furthermore, the limiting component includes:

[0016] An I-shaped fixed shaft is vertically fixed to the upper part of the filter box and located on one side of the slot. One end of the limiting plate is rotatably connected to the I-shaped fixed shaft.

[0017] The fixed base is fixedly connected to the upper part of the filter box and is located on the other side of the slot. The fixed base has a movable slot on the side facing the I-shaped fixed shaft. The limiting plate can rotate into the movable slot. The fixed base is equipped with a locking mechanism. When the other end of the limiting plate rotates into the movable slot, the locking mechanism can lock the position of the limiting plate.

[0018] Furthermore, a vertical first locking groove is provided through one end of the limiting plate that can enter the movable groove, and a vertical second locking groove is provided through the upper part of the fixed seat, and the first locking groove and the second locking groove can communicate with each other; the locking mechanism includes a locking block, which can vertically pass through the second locking groove and be inserted into the first locking groove to lock the positional relationship between the limiting plate and the fixed seat.

[0019] Furthermore, an annular groove is provided on the inner wall of the second locking groove, and the annular groove is higher than the upper end of the locking block. A through groove is provided on the upper part of the fixing base, which is connected to the annular groove and the second locking groove. The locking mechanism also includes a limiting strip, which is horizontal and can enter the annular groove through the through groove and the upper part of the second locking groove. The two ends of the limiting strip abut against the inner wall of the annular groove, and the limiting strip can rotate on the horizontal plane.

[0020] The bottom surface of the filter housing is provided with a stabilizing groove, so that when the first filter element is inserted into the filter housing from the slot, the bottom of the first filter element can be embedded in the stabilizing groove.

[0021] The beneficial effects of this utility model are as follows: The first filter element is placed into the filter box through a slot, and then a seal is inserted into the slot to seal it. A limiting plate in the limiting assembly then limits the upper part of the seal, preventing water from overflowing when the water flows through the filter box. During use, water from the closed cooling tower flows from the outlet into the inlet of the filter box and enters the filter box. The water then passes through the first filter element for filtration, intercepting particles carried up during the cooling water circulation process. This ensures that there are no obvious particles in the water entering the pump and heat exchanger bodies. Furthermore, during equipment maintenance after circulation, the seal is removed from the slot, and the first filter element is taken out for cleaning or replacement. This avoids the defect in cooling tower designs with external plate heat exchangers where particles easily enter the internal channels of the plate heat exchanger and the gaps in the internal structure of the water pump, leading to flow channel blockage. This solves the technical problem and achieves the technical effect of maintaining the stable and long-term operation of the overall system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram showing the disassembled structure of a filter component according to an embodiment of the present invention;

[0024] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0025] Figure 4 This is a structural schematic diagram of the vertical cross-section of the fixing seat according to one embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of a filter assembly according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of a collection box according to one embodiment of the present invention.

[0028] Figure label:

[0029] 1. Closed-circuit cooling tower; 2. Filter assembly; 21. Filter box; 22. Sealing plate; 231. First filter element; 232. Second filter element; 24. Sealing element; 251. I-shaped fixed shaft; 252. Limiting plate; 253. Locking block; 254. Limiting strip; 255. Fixing seat; 3. Pump body; 4. Heat exchanger body; 51. Annular groove; 52. Through groove; 53. Second locking groove; 6. Collection box. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0031] This utility model provides a heat exchange system for a closed-loop cooling tower, including a closed-loop cooling tower 1, a pump body 3, a heat exchanger body 4, and a filter assembly 2. The filter assembly 2 includes a filter housing 21, a first filter element 231, and a limiting component. The pump body 3 and the heat exchanger body 4 are disposed between the inlet and outlet ends of the closed-loop cooling tower 1. The heat exchange system also includes the filter assembly 2, which is disposed between the outlet end and the pump body 3. The filter housing 21 has an inlet and an outlet on opposite horizontal sides. The filter housing 21 has a slot on its upper part; the first filter element 231 can be placed inside the filter housing 21 through the slot to filter the water flowing from the inlet to the outlet. At this time, the first filter element 231 is located inside the slot, and the inner side wall of the slot abuts against the first filter element 231; the sealing element 24 is inserted into the slot to seal the slot; the limiting assembly includes a limiting plate 252, which is rotatably connected to the filter housing 21 and can move to limit the slot and the sealing element 24.

[0032] For details, please refer to Figure 1The first filter element 231 is placed into the filter housing 21 through a slot, and then a sealing element 24 is inserted into the slot to seal it. At this time, the upper end of the first filter element 231 abuts against the inner wall of the slot, and its lower end abuts against the inner bottom surface of the filter housing 21, thus maintaining the stable placement of the first filter element 231. Then, the limiting plate 252 in the limiting assembly limits the upper part of the sealing element 24 to prevent the sealing element 24 from being lifted up and causing water to overflow when the water flows through the filter housing 21. In use, the water in the closed cooling tower 1 flows from the outlet end into the inlet of the filter housing 21 and enters the filter housing 21. The water then passes through the first filter element 231 for filtration, intercepting the particles carried up during the cooling water circulation process. This ensures that there are no obvious particles in the water entering the pump body 3 and the heat exchanger body 4. At the same time, when performing equipment maintenance after the circulation is completed, the seal 24 is removed from the slot, and the first filter element 231 is taken out for cleaning or replacement. This avoids the defect in the cooling tower design of this external plate heat exchanger where particles can easily enter the internal channels of the plate heat exchanger and the gaps in the internal structure of the water pump, thus causing flow channel blockage. This solves the technical problem and achieves the technical effect of maintaining the stable and long-term operation of the overall system.

[0033] Furthermore, considering the need to improve the filtration effect, two filtration processes, coarse and fine, are required. Therefore, the filter housing 21 has two slots on its upper part, one slot away from the water inlet and the other slot close to the water inlet. The filter housing 21 also includes a second filter element 232, which has a higher filtration accuracy than the first filter element 231. The second filter element 232 can be placed inside the filter housing 21 through the slot close to the water inlet. There are two sealing components and two limiting components. Each slot has a corresponding sealing component 24 for sealing the slot and a limiting component for limiting the sealing component 24.

[0034] Please refer to Figure 1 , Figure 2 as well as Figure 5 In this embodiment, both the first filter element 231 and the second filter element 232 are filter screens. The pore size of the second filter element 232 is smaller than that of the first filter element. In other embodiments, the first filter element 231 and the second filter element 232 can also be other types of filter structures, such as common filter blocks, filter cartridges or activated carbon filter elements, etc.

[0035] In this embodiment, the upper end of the first filter element 231 has a handle. When maintenance is required, after removing the seal 24, a finger or a tool with a hook structure can be inserted into the slot to hook the handle, thus allowing the first filter element 231 to be removed from the filter housing 21. The second filter element 232 can also adopt the same configuration.

[0036] Furthermore, the structure of the two filter elements is optimized to achieve a better filtration effect. Therefore, both the first filter element 231 and the second filter element 232 are plate-shaped. The first filter element 231 and the second filter element 232 are placed in the filter box 21 at an angle, and the upper part of the first filter element 231 is closer to the water inlet than its lower part. The second filter element 232 is parallel to the first filter element 231.

[0037] Please refer to Figure 2 as well as Figure 5 With the above configuration, after particulate matter in the water flow is intercepted by the first filter element 231 and the second filter element 232, because the first filter element 231 and the second filter element 232 are inclined plates and their lower parts are far from the water inlet, a certain proportion of the particulate matter will fall under their own gravity and settle below the first filter element 231 and the second filter element 232. This technical effect allows the first filter element 231 and the second filter element 232 to have a longer service life and are less prone to clogging by particulate matter, thus affecting the circulation of the system's cooling water.

[0038] In this embodiment, the first filter element 231 and the second filter element 232 are plate-shaped filter screens with a rectangular frame around their perimeter to fix the filter screens and maintain their tilted state. In other embodiments, the first filter element 231 and the second filter element 232 can be other forms of plate-shaped filter elements, such as plates made of filter cartridge material, or activated carbon bags fixed using plate grids.

[0039] Furthermore, an inlet auxiliary hole is provided at the bottom of one side of the filter box 21, and a sealing plate 22 is provided at the inlet auxiliary hole. The sealing plate 22 is detachably connected to the filter box 21 and is used to seal the inlet auxiliary hole.

[0040] Please refer to Figure 2 , Figure 5 as well as Figure 6 In this embodiment, the sealing plate 22 is detachably connected to the filter housing 21 by bolts. In other embodiments, the sealing plate 22 can also be detachably connected to the filter housing 21 by clips, slide rails, or some conventional locking components. The sealing plate 22 needs to ensure that it can completely seal the inlet auxiliary hole.

[0041] Furthermore, the filter assembly 2 also includes two collection boxes 6, both of which are fixedly connected to the side of the sealing plate 22 facing the filter box 21. One collection box 6 is located below the first filter element 231, and the other collection box 6 is located below the second filter element 232. Both collection boxes 6 can pass through the inlet auxiliary hole.

[0042] Please refer to Figure 2 , Figure 5 as well as Figure 6 In this embodiment, when particulate matter in the water flow is intercepted by the first filter element 231 and the second filter element 232 and falls and settles, this part of the particulate matter will eventually fall into the collection box 6 below the first filter element 231 and the second filter element 232, thereby achieving the technical effect of collecting the falling particulate matter. During the maintenance stage, the sealing plate 22 is disassembled from the filter box 21, and the sealing plate 22 is moved away from the inside of the filter box 21, thereby driving the collection box 6 to be pulled out from the inlet auxiliary hole, thereby cleaning the settled particulate matter collected therein. After cleaning, the collection box 6 is sent into the filter box 21 through the inlet auxiliary hole, and the sealing plate 22 is detachably connected to the filter box 21 to seal the inlet auxiliary hole.

[0043] Furthermore, the limiting assembly includes: an I-shaped fixed shaft 251, which is vertically fixedly connected to the upper part of the filter box 21 and located on one side of the slot; one end of the limiting plate 252 is rotatably connected to the I-shaped fixed shaft 251; and a fixed seat 255, which is fixedly connected to the upper part of the filter box 21 and located on the other side of the slot. The fixed seat 255 has a movable groove on the side facing the I-shaped fixed shaft 251, and the limiting plate 252 can rotate into the movable groove. The fixed seat 255 is provided with a locking mechanism, which can lock the position of the limiting plate 252 when the other end of the limiting plate 252 rotates into the movable groove.

[0044] Please refer to Figure 2 , Figure 3 and Figure 4 In this embodiment, the limiting component has been further refined to facilitate a convenient and stable application of a top-mounted limiting effect to the seal. In this embodiment, the limiting plate 252 can rotate horizontally around the I-shaped fixed shaft 251. When the seal 24 needs to be limited, the limiting plate 252 is rotated above the seal 24, and the end of the limiting plate 252 away from the I-shaped fixed shaft 251 enters the movable groove of the fixed seat 252. At this time, a locking mechanism is used to lock the position of the limiting plate 252, thereby achieving a convenient and stable limiting effect, ensuring the stable filtration effect of the filter assembly and preventing the overflow of internal cooling water.

[0045] Furthermore, a vertical first locking groove is formed through one end of the limiting plate 252 that can enter the movable groove, and a vertical second locking groove 53 is formed through the upper part of the fixed seat 255, and the first locking groove and the second locking groove 53 can communicate with each other; the locking mechanism includes a locking block 253, which can vertically pass through the second locking groove 53 and be inserted into the first locking groove to lock the positional relationship between the limiting plate 252 and the fixed seat 255. This refines the locking mechanism, enabling it to more securely lock the position of the limiting plate 252, thus allowing the limiting plate 252 to more stably limit the sealing element 24.

[0046] In this embodiment, when the end of the limiting plate 252 away from the I-shaped fixed shaft 251 enters the movable groove of the fixed seat 252, the first locking groove and the second locking groove 53 are aligned and connected. At this time, the locking block is inserted into the channel formed by the first locking groove and the second locking groove 53. The locking block 253 can simultaneously contact the inner sidewalls of the first locking groove and the second locking groove 53, thereby restricting the movement of the limiting plate 252 and achieving the technical effect of locking the limiting plate 252.

[0047] In other embodiments, various common locking mechanisms can be used to lock the limiting plate 252, such as setting the limiting plate 252 and the fixing seat 255 as a snap-fit ​​connection, or using a ring cable tie to fix the relative position of the two, or using a locking clamp structure to lock the two.

[0048] Furthermore, in order to make the locking effect of the locking block 253 more stable, an annular groove 51 is provided on the inner side wall of the second locking groove 53, and the annular groove 51 is higher than the upper end of the locking block 253. A through groove 52 is provided on the upper part of the fixing base 255, which is connected to the annular groove 51 and the second locking groove 53. The locking mechanism also includes a limiting strip 254, which is horizontal and can enter the annular groove 51 through the through groove 52 and the upper part of the second locking groove 53. The two ends of the limiting strip 254 abut against the inner side wall of the annular groove 51, and the limiting strip 254 can rotate on the horizontal plane.

[0049] When the locking block is inserted into the channel formed by the first locking groove and the second locking groove 53, restricting the movement of the limiting plate 252, the limiting strip 254 is then placed in the annular groove 51, above the locking block 253, through the through groove 52, with both ends of the limiting strip 254 adhering to the inner wall of the annular groove 51. At this time, the limiting strip 254 is located at the diameter position of the annular groove 51 and can rotate horizontally about the center of the annular groove 51. Rotating the limiting strip 254 away from the bottom of the through groove 52 prevents it from leaving the annular groove 51, thus limiting the upper part of the locking block 53 and preventing the locking block 53 from coming out of the first locking groove and the second locking groove 53 under vibration conditions. When the lock is engaged, simply rotate the limiting strip 254 to the bottom of the through groove 52 and remove it through the through groove 52 to remove the locking block 53 and release the lock.

[0050] The bottom surface of the filter housing 21 has a stabilizing groove. When the first filter element 231 is inserted into the filter housing 21 from the slot, the bottom of the first filter element 231 can be embedded in the stabilizing groove. The inner wall of the stabilizing groove abuts against the first filter element 231. With the above arrangement, the upper end of the first filter element 231 is confined in the slot, and the lower end of the first filter element 231 is embedded in the stabilizing groove, so that the position of the first filter element 231 can remain stable under the influence of water flow impact.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat exchange system for a closed-circuit cooling tower, comprising a pump body (3) and a heat exchanger body (4) disposed between the inlet and outlet ends of the closed-circuit cooling tower (1), characterized in that, The heat exchange system further includes a filter assembly (2), which is disposed between the water outlet and the pump body (3). The filter assembly (2) includes: The filter box (21) has an inlet and an outlet on opposite horizontal sides, and a slot is provided on the upper part of the filter box (21). The first filter element (231) can be placed in the filter box (21) through a slot to filter the water flow from the inlet to the outlet. At this time, the first filter element (231) is located in the slot, and the inner side wall of the slot abuts against the first filter element (231). The sealing element (24) is inserted into the slot to seal the slot; The limiting assembly includes a limiting plate (252) which is rotatably connected to the filter housing (21) and can move to limit the slot and the seal (24).

2. The heat exchange system for a closed-loop cooling tower according to claim 1, characterized in that, The filter housing (21) has two slots on its upper part. One slot is far from the water inlet and the other slot is close to the water inlet. The filter housing (21) also includes a second filter element (232). The second filter element (232) has a higher filtration accuracy than the first filter element (231). The second filter element (232) can be placed in the filter housing (21) through the slot close to the water inlet. There are two sealing components and two limiting components. Each slot has a corresponding sealing component (24) for sealing the slot and a limiting component for limiting the sealing component (24).

3. The heat exchange system for a closed-loop cooling tower according to claim 2, characterized in that, Both the first filter element (231) and the second filter element (232) are plate-shaped. The first filter element (231) and the second filter element (232) are placed in the filter box (21) at an incline. The upper part of the first filter element (231) is closer to the water inlet than its lower part. The second filter element (232) is parallel to the first filter element (231).

4. The heat exchange system for a closed-loop cooling tower according to claim 3, characterized in that, An inlet auxiliary hole is provided on the bottom side of the filter box (21), and a sealing plate (22) is provided at the inlet auxiliary hole. The sealing plate (22) is detachably connected to the filter box (21) and is used to seal the inlet auxiliary hole.

5. The heat exchange system for a closed-loop cooling tower according to claim 4, characterized in that, The filter assembly (2) further includes two collection boxes (6), both of which are fixedly connected to the side of the sealing plate (22) facing the filter box (21). One collection box (6) is located below the first filter element (231), and the other collection box (6) is located below the second filter element (232). Both collection boxes (6) can pass through the inlet auxiliary hole.

6. The heat exchange system for a closed-loop cooling tower according to claim 1, characterized in that, The limiting component includes: An I-shaped fixed shaft (251) is vertically fixed to the upper part of the filter box (21) and located on one side of the slot. One end of the limiting plate (252) is rotatably connected to the I-shaped fixed shaft (251). The fixed seat (255) is fixedly connected to the upper part of the filter box (21) and located on the other side of the slot. The fixed seat (255) has a movable groove on the side facing the I-shaped fixed shaft (251). The limiting plate (252) can rotate into the movable groove. The fixed seat (255) is provided with a locking mechanism. When the other end of the limiting plate (252) rotates into the movable groove, the locking mechanism can lock the position of the limiting plate (252).

7. The heat exchange system for a closed-loop cooling tower according to claim 6, characterized in that, The limiting plate (252) has a vertical first locking groove through one end that can enter the movable groove, and the fixed seat (255) has a vertical second locking groove (53) through the upper part, and the first locking groove and the second locking groove (53) can communicate with each other; the locking mechanism includes a locking block (253), which can vertically pass through the second locking groove (53) and be inserted into the first locking groove to lock the positional relationship between the limiting plate (252) and the fixed seat (255).

8. The heat exchange system for a closed-loop cooling tower according to claim 7, characterized in that, The inner wall of the second locking groove (53) is provided with an annular groove (51), and the annular groove (51) is higher than the upper end of the locking block (253). The upper part of the fixing seat (255) is provided with a through groove (52), which is connected to the annular groove (51) and the second locking groove (53). The locking mechanism also includes a limiting strip (254), which is horizontal and can pass through the through groove (52) and the upper part of the second locking groove (53) to enter the annular groove (51). The two ends of the limiting strip (254) abut against the inner wall of the annular groove (51), and the limiting strip (254) can rotate on the horizontal plane.

9. The heat exchange system for a closed-loop cooling tower according to claim 1, characterized in that, The bottom surface of the filter box (21) is provided with a stabilizing groove. When the first filter element (231) is inserted into the filter box (21) from the slot, the bottom of the first filter element (231) can be embedded in the stabilizing groove.

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