A tube brush type on-line cleaning device

Abstract

The application provides a tube brush type on-line cleaning device, which comprises a cooling tower, a water pump, a reverser and a heat exchanger, the reverser comprises a first water inlet, a first water outlet, a second water inlet and a second water outlet, the bottom of the cooling tower is communicated with the water inlet of the water pump, the water outlet of the water pump is the same as the first water inlet of the reverser, the first water outlet of the reverser is communicated with the water inlet of the heat exchanger, the water outlet of the heat exchanger is communicated with the second water inlet of the reverser, and the second water outlet of the reverser is communicated with the top of the cooling tower. The application has the advantages of keeping the inside of the heat exchange tube clean, preventing scale and algal slime from being generated, improving the heat exchange efficiency, reducing the corrosion of the heat exchange tube, prolonging the service life of the heat exchanger and the like.

Description

Technical Field

[0001] This invention relates to the field of heat exchangers, and more specifically to a tube brush type online cleaning device. Background Technology

[0002] The tube brush online cleaning system can clean the condenser of a chiller unit without shutting it down, preventing scale buildup on the condenser's inner wall, thereby improving the chiller's heat exchange efficiency and making the heat exchange equipment operate more stably, efficiently, and energy-savingly. The tube brush online cleaning system can operate online without stopping the unit. The system consists of specially designed wear-resistant nylon brushes, brush baskets, a four-way commutator, and a controller. The tube brushes and brush baskets are installed on the chiller condenser, and the four-way commutator is installed in the water circuit. During operation, the water flow direction is switched, causing the chiller's brushes to reciprocate and clean the tube walls, removing dirt. The effectiveness of the tube brushes, as the cleaning component, directly affects the overall performance of the system.

[0003] The four-way commutator is a core component of the tube brush type online cleaning device. Traditional commutators have a cylindrical structure with flat caps at both ends. To better withstand internal water pressure, these caps are typically thick, resulting in a significant dead weight for the equipment. Due to the commutator's diameter, the four-way interfaces are close together, which is inconvenient for installation and subsequent maintenance. Furthermore, the internal cavity of the commutator requires machining to ensure the rotation of the internal flow control mechanism, resulting in complex machining processes, high rotational resistance, and the need for a hydraulic or pneumatic actuator. Additionally, the limited internal space leads to relatively high fluid resistance. Long-term operation is not conducive to energy conservation and consumption reduction.

[0004] Therefore, it is necessary to provide a new technical solution. Summary of the Invention

[0005] To address the technical problems existing in the prior art, this invention discloses a tube brush type online cleaning device, the specific technical solution of which is as follows:

[0006] This invention provides a pipe brush type online cleaning device, including a cooling tower, a water pump, a commutator, and a heat exchanger. The commutator includes a first water inlet, a first water outlet, a second water inlet, and a second water outlet.

[0007] The bottom of the cooling tower is connected to the inlet of the water pump, the outlet of the water pump is connected to the first inlet of the commutator, the first outlet of the commutator is connected to the inlet of the heat exchanger, the outlet of the heat exchanger is connected to the second inlet of the commutator, and the second outlet of the commutator is connected to the top of the cooling tower.

[0008] Furthermore, the first water inlet and the first water outlet of the commutator are at the same height, the second water inlet and the second water outlet of the commutator are at the same height, and the first water inlet and the second water outlet are located on the same side, and the first water outlet and the second water inlet are located on the same side.

[0009] Furthermore, the commutator also includes a tank, an inner liner, a partition plate, and a drive shaft.

[0010] The inner liner is disposed inside the tank body, and the top and bottom of the inner liner are respectively provided with openings.

[0011] The partition plate connects the outer wall of the inner liner and the inner wall of the tank, dividing the tank into upper and lower parts that are not interconnected, and fixing the inner liner in place.

[0012] The drive shaft passes through the top and bottom of the inner liner and can move up and down. The top of the drive shaft is provided with an upper baffle that can cover the top opening of the drive shaft. The bottom of the drive shaft is provided with a lower baffle that can cover the bottom opening of the drive shaft. A guide tube is provided in the middle of the drive shaft. The guide tube is a hollow tube, and the upper and lower ends of the guide tube extend outward to contact and seal with the inside of the inner liner.

[0013] Furthermore, the inner liner is provided with through holes above and below the partition plate, and the through holes connect the internal space of the inner liner with the internal space of the tank body.

[0014] Furthermore, a sealing baffle is also provided inside the inner liner.

[0015] When the bottom end of the guide tube is at the same horizontal level as the isolation plate, the top of the guide tube contacts and seals with the sealing baffle, and the guide tube isolates the inner liner from top to bottom, preventing communication.

[0016] Furthermore, the tank body is connected to the first water inlet and the second water inlet respectively, and the inner liner is connected to the first water outlet and the second water outlet respectively.

[0017] When the drive shaft is pulled up, the upper baffle separates from the top opening of the inner liner, the lower baffle separates from the bottom opening of the inner liner, the guide tube contacts the sealing baffle, the first water inlet is connected to the first water outlet, and the second water inlet is connected to the second water outlet.

[0018] When the drive shaft is pulled down, the upper baffle is in sealed contact with the top opening of the inner liner, the lower baffle is in sealed contact with the bottom opening of the inner liner, the guide tube connects the upper and lower sides of the inner liner, the first water inlet is connected to the second water inlet, and the first water outlet is connected to the second water outlet through the guide tube.

[0019] Furthermore, when the drive shaft is in the pull-down position, the through hole portion on the inner liner is located between the top and bottom ends of the guide tube.

[0020] The present invention has the following beneficial effects:

[0021] 1. The tube brush type online cleaning device provided by the present invention can make the tube brush reciprocate inside the heat exchange tube, keep the inside of the heat exchange tube clean, prevent scale and algae from forming, improve heat exchange efficiency, reduce heat exchange tube corrosion, and extend the service life of the heat exchanger.

[0022] 2. The tube brush type online cleaning device provided by this invention, compared with the traditional four-way commutator, uses a capped structure at both ends, which has better pressure resistance and is lighter than the flat-cap structure. The commutator shell does not require machining, simplifying the manufacturing process. The shell size can be adjusted according to customer needs, and the arrangement of the four interfaces is more flexible, facilitating installation and subsequent maintenance. Traditional commutators have high rotational resistance, requiring hydraulic or pneumatic actuators. This invention, however, only requires an electric actuator, simplifying maintenance.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

[0025] Figure 1 This is a schematic diagram of the structure of the parallel water flow type tube brush online cleaning device provided in an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the cross-flow type tube brush online cleaning device provided in an embodiment of the present invention.

[0027] Figure 3 yes Figure 1 A schematic diagram of the commutator.

[0028] Figure 4 yes Figure 2 A schematic diagram of the commutator.

[0029] The attached diagram is labeled as follows: 1-Cooling tower, 2-Water pump, 3-Commutator, 4-Heat exchanger, 31-First inlet, 32-First outlet, 33-Second inlet, 34-Second outlet, 35-Tank body, 36-Inner liner, 37-Isolation plate, 38-Drive shaft, 381-Upper baffle, 382-Lower baffle, 383-Guide tube, 361-Sealing baffle. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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 the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] This invention provides a tube brush type online cleaning device, reference Figures 1 to 4 The system includes a cooling tower 1, a water pump 2, a commutator 3, and a heat exchanger 4. The commutator 3 includes a first inlet 31, a first outlet 32, a second inlet 33, and a second outlet 34. The bottom of the cooling tower 1 is connected to the inlet of the water pump 2, the outlet of the water pump 2 is connected to the first inlet of the commutator 31, the first outlet 32 ​​of the commutator 3 is connected to the inlet of the heat exchanger 4, the outlet of the heat exchanger 4 is connected to the second inlet 33 of the commutator 3, and the second outlet 34 of the commutator 3 is connected to the top of the cooling tower 1.

[0034] The first inlet 31 and the first outlet 32 ​​of the commutator 3 are at the same height, the second inlet 33 and the second outlet 34 of the commutator 3 are at the same height, and the first inlet 31 and the second outlet 34 are on the same side, and the first outlet 32 ​​and the second inlet 33 are on the same side.

[0035] The commutator 3 also includes a tank 35, an inner liner 36, an isolation plate 37, and a drive shaft 38.

[0036] The inner liner 36 is disposed inside the tank body 35, and the top and bottom of the inner liner 36 are respectively provided with openings.

[0037] The partition plate 37 connects the outer wall of the inner liner 36 and the inner wall of the tank body 35. The partition plate 37 divides the tank body 35 into upper and lower parts that are not connected to each other, and the partition plate 37 fixes the inner liner 36.

[0038] The drive shaft 38 passes through the top and bottom of the inner liner 36 and can move up and down. An upper baffle 381 is provided at the top of the drive shaft 38, which can cover the top opening of the drive shaft 38. A lower baffle 382 is provided at the bottom of the drive shaft 38, which can cover the bottom opening of the drive shaft 38. A guide tube 383 is provided in the middle of the drive shaft 38. The guide tube 383 is a hollow tube, and the upper and lower ends of the guide tube 383 extend outward to contact and seal with the inside of the inner liner 36.

[0039] The inner liner 36 has through holes above and below the partition plate 37, and the through holes connect the internal space of the inner liner 36 with the internal space of the tank body 35.

[0040] The inner liner 36 is also provided with a sealing baffle 361. When the bottom end of the guide tube 383 is at the same horizontal line as the isolation plate 37, the top of the guide tube 383 contacts and seals with the sealing baffle 361. The guide tube 383 isolates the inner liner 36 from top to bottom and prevents it from communicating.

[0041] The tank body 35 is connected to the first water inlet 31 and the second water inlet 33, respectively, and the inner liner 36 is connected to the first water outlet 32 ​​and the second water outlet 34, respectively.

[0042] When the drive shaft 38 is pulled up, the upper baffle 381 separates from the top opening of the inner liner 36, the lower baffle 382 separates from the bottom opening of the inner liner 36, the guide tube 383 contacts the sealing baffle 361, the first water inlet 31 is connected to the first water outlet 32, and the second water inlet 33 is connected to the second water outlet 34.

[0043] When the drive shaft 38 is pulled down, the upper baffle 381 is in sealed contact with the top opening of the inner liner 36, the lower baffle 382 is in sealed contact with the bottom opening of the inner liner 36, the guide tube 383 connects the upper and lower sides of the inner liner 36, the first water inlet 31 is connected to the second water inlet 33, and the first water outlet 32 ​​is connected to the second water outlet 34 through the guide tube.

[0044] When the drive shaft 38 is in the pull-down position, the through hole portion on the inner liner 36 is located between the top and bottom ends of the guide tube 383.

[0045] 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 the invention. 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.

[0046] 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 and variations to the above embodiments within the scope of the present invention.

Claims

1. A pipe brush type on-line cleaning device, characterized by: The cooling tower (1), the water pump (2), the reversing device (3) and the heat exchanger (4), the reversing device (3) comprises a first water inlet (31), a first water outlet (32), a second water inlet (33) and a second water outlet (34), The bottom of the cooling tower (1) is communicated with the water inlet of the water pump (2), the water outlet of the water pump (2) is communicated with the first water inlet (31) of the reversing device (3), the first water outlet (32) of the reversing device (3) is communicated with the water inlet of the heat exchanger (4), the water outlet of the heat exchanger (4) is communicated with the second water inlet (33) of the reversing device (3), and the second water outlet (34) of the reversing device (3) is communicated with the top of the cooling tower (1), The reversing device (3) further comprises a tank body (35), an inner container (36), a partition plate (37) and a transmission shaft (38), The inner container (36) is arranged inside the tank body (35), and the top and bottom of the inner container (36) are respectively provided with openings, The partition plate (37) connects the outer wall of the inner container (36) and the inner wall of the tank body (35), the partition plate (37) separates the tank body (35) into two parts and is not communicated with each other, and the partition plate (37) fixes the inner container (36), The transmission shaft (38) penetrates the top and bottom of the inner container (36), and the transmission shaft (38) can move up and down, the top of the transmission shaft (38) is provided with an upper baffle (381), the upper baffle (381) can block the top opening of the transmission shaft (38), the lower part of the transmission shaft (38) is provided with a lower baffle (382), the lower baffle (382) can block the bottom opening of the transmission shaft (38), and the middle position of the transmission shaft (38) is provided with a flow guide cylinder (383), the flow guide cylinder (383) is a hollow cylinder, and the upper and lower ends of the flow guide cylinder (383) respectively extend outward to contact and seal the inside of the inner container (36), The inner container (36) is provided with a through hole above and below the partition plate (37), and the through hole communicates the internal space of the inner container (36) with the internal space of the tank body (35), The tank body (35) is respectively communicated with the first water inlet (31) and the second water inlet (33), and the inner container (36) is respectively communicated with the first water outlet (32) and the second water outlet (34), The inner container (36) is further provided with a sealing baffle (361), when the bottom end of the flow guide cylinder (383) is at the same horizontal line as the partition plate (37), the top of the flow guide cylinder (383) contacts and seals the sealing baffle (361), and the flow guide cylinder (383) separates the inner container (36) into two parts and is not communicated with each other, When the transmission shaft (38) is pulled up, the upper baffle (381) is separated from the top opening of the inner container (36), the lower baffle (382) is separated from the bottom opening of the inner container (36), the flow guide cylinder (383) is in contact with the sealing baffle (361), the first water inlet (31) is in communication with the first water outlet (32), and the second water inlet (33) is in communication with the second water outlet (34). When the transmission shaft (38) is pulled down, the upper baffle (381) is in sealing contact with the top opening of the inner container (36), the lower baffle (382) is in sealing contact with the bottom opening of the inner container (36), the flow guide cylinder (383) communicates the upper and lower sides of the inner container (36), the first water inlet (31) is in communication with the second water inlet (33), and the first water outlet (32) is in communication with the second water outlet (34) through the flow guide cylinder (383).

2. The pipe brush online cleaning apparatus according to claim 1, wherein: The first water inlet (31) and the first water outlet (32) of the commutator (3) are at the same height, the second water inlet (33) and the second water outlet (34) of the commutator (3) are at the same height, and the first water inlet (31) and the second water outlet (34) are located on the same side, and the first water outlet (32) and the second water inlet (33) are located on the same side.

3. The pipe brush online cleaning apparatus according to claim 1, wherein: When the transmission shaft (38) is in the pulled-down position, the through hole portion on the inner container (36) is located between the top end and the bottom end of the flow guide cylinder (383).

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