Cleaning device of heat exchanger

Abstract

The utility model discloses a cleaning device of a heat exchanger, which relates to the technical field of heat exchanger cleaning, and comprises a bottom plate, the top of the bottom plate is provided with a clamping component and a radial adjusting component, the radial adjusting component is symmetrically connected with two groups of transverse pipes, and the close ends of the two groups of transverse pipes are communicated with annular high-pressure nozzles. An axial pushing assembly is further arranged on the bottom plate, and the radial adjusting assembly comprises two fixed supporting pieces and two movable supporting pieces. In the using process, the tube nest heat exchange assembly is clamped through the arranged clamping assembly, then the two sets of annular high-pressure nozzles are pushed to move towards the interior of a tube body in the tube nest heat exchange assembly through the axial pushing assembly so as to wash the inner wall of the tube body, and therefore the multiple tube bodies do not need to be detached for cleaning; and the tube nest heat exchange assembly can be cleaned by directly and integrally disassembling the tube nest heat exchange assembly, so that the steps of the cleaning work are effectively simplified, and the efficiency of the cleaning work is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger cleaning technology, and in particular to a heat exchanger cleaning device. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, and are widely used.

[0003] Shell-and-tube heat exchangers, also known as tubular heat exchangers, are the most widely used type of heat exchanger. They are indirect heat exchangers that use the walls of tube bundles enclosed in a shell as the heat transfer surface. This type of heat exchanger has a simple structure, low cost, wide flow cross-section, and is easy to clean of scale. In the process of cleaning shell-and-tube heat exchangers, it is necessary to focus on cleaning the inner walls of multiple tube bundles.

[0004] Chinese utility model patent application number CN202310993951.2 describes an automatic cleaning device for tube heat exchanger pipes. This device, through the cooperation of a rotating mechanism and a cleaning mechanism, can clean multiple disassembled heat exchanger pipes at once, resulting in high cleaning efficiency. Furthermore, the combination of flexible brushing and rigid scraping during the cleaning process allows for targeted cleaning of scale that has been accumulated for a long time and is difficult to clean, thus improving the cleaning effect. However, when cleaning the tube bundles in the tube heat exchanger, the aforementioned cleaning device requires disassembling multiple tube bundles first, then installing them onto the cleaning device for cleaning. After cleaning, the multiple tube bundles need to be reinstalled inside the heat exchanger shell, leading to a large workload for cleaning tube heat exchangers and reducing the efficiency of tube heat exchanger cleaning. Utility Model Content

[0005] The purpose of this utility model is to provide a heat exchanger cleaning device to solve the problem mentioned in the background art that existing shell-and-tube heat exchanger cleaning devices require disassembling multiple tube bundles and then installing them onto the cleaning device before cleaning can be performed, resulting in a large workload for cleaning shell-and-tube heat exchangers and reducing the efficiency of cleaning shell-and-tube heat exchangers.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cleaning device for a heat exchanger, comprising a base plate, a clamping assembly and a radial adjustment assembly provided on the top of the base plate, two sets of horizontal pipes symmetrically connected to the radial adjustment assembly, and an annular high-pressure nozzle connected to one end of each of the two sets of horizontal pipes that are close to each other; and an axial pushing assembly is also provided on the base plate.

[0007] The radial adjustment assembly includes two fixed supports and two movable supports. The two fixed supports and two movable supports are symmetrically arranged on the base plate. The two movable supports are located on the left and right sides of the two fixed supports, respectively. A set of horizontal tubes is connected to the fixed supports and movable supports on the same side. The radial adjustment assembly is used to drive the horizontal tubes to move radially along the fixed supports and movable supports on the same side.

[0008] The axial pushing component is used to push the two movable supports to move in a direction that brings them closer together.

[0009] Preferably, the radial adjustment assembly further includes multiple movable cavities respectively formed at equal angles on two fixed supports and two movable supports. Movable blocks are slidably connected at equal angles in the multiple movable cavities. The horizontal tube is movably inserted into the movable blocks. The radial adjustment assembly also includes two sets of fixing mechanisms symmetrically arranged on the two movable supports. The fixing mechanisms are used to fix the horizontal tube. The advantage of this arrangement is that the radial position of the horizontal tube and the annular high-pressure nozzle can be easily adjusted and fixed, preparing for the cleaning work, ensuring the smooth and reliable completion of the cleaning work, and improving the efficiency of the cleaning work.

[0010] Preferably, each set of fixing mechanisms includes clamps that are respectively fixedly sleeved on a set of horizontal tubes. Each set of fixing mechanisms also includes multiple pairs of first cylinders that are connected in a ring at equal angles to the movable support. The number of pairs of first cylinders in each set is equal to the number of horizontal tubes in each set. The output end of each pair of first cylinders is symmetrically fixedly connected to two clamping plates. Each set of clamps is located in the middle of each set of multiple pairs of clamping plates. The advantage of this arrangement is that it ensures that the cleaning work can be carried out smoothly and improves the reliability of the cleaning device.

[0011] Preferably, the fixed support includes a first circular plate, and the fixed support also includes a plurality of connecting plates that are fixedly connected to the outer circumferential surface of the first circular plate at equal angles in a ring. The plurality of movable cavities are respectively opened on the side of the plurality of connecting plates. The advantage of this arrangement is that it is convenient for the operator to accurately adjust the radial position of the annular high-pressure nozzle, which improves the ease of operation of the cleaning device and thus improves the efficiency of the cleaning work.

[0012] Preferably, the axial pushing assembly includes two sets of push rods symmetrically fixedly connected to two movable support members. The axial pushing assembly also includes two sets of second cylinders symmetrically fixedly connected to the top of the base plate. The output ends of the two sets of second cylinders are respectively fixedly connected to the two sets of push rods. The movable support member is a second circular plate. The two sets of push rods are symmetrically fixedly connected to the outer circumferential surface of the two second circular plates. The advantage of this arrangement is that it ensures that the cleaning work is completed smoothly and further improves the reliability of the cleaning device.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] 1. In this utility model, the tube heat exchange assembly is clamped by the clamping component, and then the two sets of annular high-pressure nozzles are pushed towards the inside of the tube in the tube heat exchange assembly by the axial pushing component to rinse the inner wall of the tube. In this way, it is not necessary to disassemble multiple tubes separately for cleaning. The tube heat exchange assembly can be disassembled as a whole to complete the cleaning work, which effectively simplifies the cleaning steps and improves the cleaning efficiency.

[0015] 2. In this utility model, the fixed support component includes multiple connecting plates distributed at equal angles in a ring shape, which creates gaps between the connecting plates. This allows the operator to accurately adjust the radial position of the ring-shaped high-pressure nozzle, improving the ease of operation of the cleaning device and further enhancing the efficiency of the cleaning work. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a first cleaning device for a heat exchanger in an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the second structure of a cleaning device for a heat exchanger in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the third structure of a cleaning device for a heat exchanger in an embodiment of this utility model;

[0020] Figure 4 This is a partial structural schematic diagram of a cleaning device for a heat exchanger according to an embodiment of the present utility model;

[0021] Figure 5 As an embodiment of this utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 6 As an embodiment of this utility model Figure 3 Enlarged view of point B in the middle;

[0023] Figure 7 As an embodiment of this utility model Figure 3 Enlarged diagram of point C in the middle.

[0024] In the diagram: 1. Base plate; 2. Clamping assembly; 21. First pressure plate; 22. Third cylinder; 23. Second pressure plate; 3. Radial adjustment assembly; 31. Fixed support; 311. First circular plate; 312. Connecting plate; 32. Moving support; 33. Moving cavity; 34. Moving block; 35. Fixing mechanism; 351. Clamping block; 352. First cylinder; 353. Clamping plate; 36. Fixing plate; 37. Crossbar; 4. Horizontal tube; 41. Annular high-pressure nozzle; 5. Axial pushing assembly; 51. Push rod; 52. Second cylinder; 6. Tube heat exchange assembly; 61. Partition plate; 62. Tube bundle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0026] Example 1

[0027] Please refer to Figures 1-7 The cleaning device for a heat exchanger shown includes a base plate 1. A clamping assembly 2 and a radial adjustment assembly 3 are provided on the top of the base plate 1. Two sets of horizontal tubes 4 are symmetrically connected to the radial adjustment assembly 3. An annular high-pressure nozzle 41 is connected to one end of each set of horizontal tubes 4 that is close to each other. An axial pushing assembly 5 is also provided on the base plate 1. The device also includes a tube heat exchange assembly 6. The tube heat exchange assembly 6 includes two symmetrically distributed partitions 61. Multiple tube bundles 62 are fixedly connected between the two partitions 61.

[0028] The clamping assembly 2 includes two first pressure plates 21 symmetrically fixedly connected to the top of the base plate 1. The clamping assembly 2 also includes two pairs of third cylinders 22 symmetrically fixedly connected to the top of the base plate 1. Two second pressure plates 23 are symmetrically fixedly connected to the output ends of the two pairs of third cylinders 22. The two second pressure plates 23 are located directly above the two first pressure plates 21. Two partitions 61 are placed on the top of the two first pressure plates 21 respectively. The two second pressure plates 23 are pressed against the top of the two partitions 61.

[0029] The radial adjustment assembly 3 includes two fixed supports 31 and two movable supports 32. The two fixed supports 31 and the two movable supports 32 are symmetrically arranged on the base plate 1. The two movable supports 32 are located on the left and right sides of the two fixed supports 31 respectively. A set of horizontal tubes 4 are connected to the fixed supports 31 and the movable supports 32 on the same side. The radial adjustment assembly 3 is used to drive the horizontal tubes 4 to move radially along the fixed supports 31 and the movable supports 32 on the same side.

[0030] The axial push assembly 5 is used to push the two movable supports 32 to move in a direction that approaches each other.

[0031] refer to Figures 2-7 The radial adjustment assembly 3 also includes multiple moving cavities 33 that are respectively opened at equal angles on two fixed support members 31 and two moving support members 32. Moving blocks 34 are slidably connected at equal angles in the multiple moving cavities 33. The horizontal tube 4 is movably inserted into the moving blocks 34. The radial adjustment assembly 3 also includes two sets of fixing mechanisms 35 symmetrically arranged on the two moving support members 32. The fixing mechanisms 35 are used to fix the horizontal tube 4. The radial adjustment assembly 3 also includes two fixing plates 36 symmetrically fixedly connected to the top of the base plate 1. Two horizontal bars 37 are symmetrically fixedly connected to the sides of the two fixing plates 36 that are close to each other. Two first circular plates 311 are symmetrically fixedly connected to the ends of the two horizontal bars 37 that are close to each other. Two second circular plates are symmetrically movably sleeved on the outer circumferential surfaces of the two horizontal bars 37.

[0032] Specifically, by pushing the moving block 34 to slide within the moving cavity 33, the radial positions of the horizontal tube 4 and the annular high-pressure nozzle 41 can be adjusted. Then, the horizontal tube 4 is fixed by the fixing mechanism 35, which conveniently completes the adjustment and fixing of the radial positions of the horizontal tube 4 and the annular high-pressure nozzle 41. This allows the annular high-pressure nozzle 41 to be aligned with the end of the tube bundle 62 to be cleaned, preparing for the cleaning work and ensuring that the cleaning work is completed smoothly and reliably, while also improving the efficiency of the cleaning work.

[0033] refer to Figure 2 and Figure 5 Each set of fixing mechanisms 35 includes clamping blocks 351 that are respectively fixedly sleeved on a set of horizontal tubes 4. Each set of fixing mechanisms 35 also includes multiple pairs of first cylinders 352 that are connected in a ring at equal angles to the movable support 32. The number of pairs of first cylinders 352 in each set is equal to the number of horizontal tubes 4 in each set. The output end of each pair of first cylinders 352 is symmetrically fixedly connected to two clamping plates 353. Each set of clamping blocks 351 is located in the middle of each set of multiple pairs of clamping plates 353.

[0034] Specifically, by activating each pair of two first cylinders 352, the two clamping plates 353 are pushed to move towards each other and clamp the clamping plates 353. Then, with the cooperation of the moving blocks 34 on the same side fixed support 31 and moving support 32, the horizontal pipe 4 can be firmly fixed, ensuring that the cleaning work can be carried out smoothly and improving the reliability of the cleaning device.

[0035] refer to Figure 2 , Figure 3 , Figure 4 and Figure 6The fixed support member 31 includes a first circular plate 311, and the fixed support member 31 also includes a plurality of connecting plates 312 that are fixedly connected to the outer peripheral surface of the first circular plate 311 at equal angles in a ring. A plurality of moving cavities 33 are respectively opened on the side of the plurality of connecting plates 312.

[0036] Specifically, there are gaps between the multiple connecting plates 312, which makes it easy for the staff to accurately adjust the radial position of the annular high-pressure nozzle 41 so that the annular high-pressure nozzle 41 can be aligned with the end of the tube bundle 62 to be cleaned, thereby improving the ease of operation of the cleaning device and thus improving the efficiency of the cleaning work.

[0037] refer to Figures 2-4 The axial pushing component 5 includes two sets of push rods 51 symmetrically fixedly connected to two movable support members 32. The axial pushing component 5 also includes two sets of second cylinders 52 symmetrically fixedly connected to the top of the base plate 1. The output ends of the two sets of second cylinders 52 are respectively fixedly connected to the two sets of push rods 51. The movable support member 32 is a second circular plate, and the two sets of push rods 51 are symmetrically fixedly connected to the outer circumferential surface of the two second circular plates.

[0038] Specifically, by using two sets of second cylinders 52 to drive two sets of push rods 51 to move in a direction closer to each other, two sets of annular high-pressure nozzles 41 can be moved from both ends of the tube bundle 62 to be cleaned towards the middle of the tube bundle 62 to complete the cleaning work on the inner wall of the tube bundle 62, ensuring the smooth completion of the cleaning work and further improving the reliability of the cleaning device.

[0039] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cleaning device for a heat exchanger, comprising a base plate (1), characterized in that: The base plate (1) is provided with a clamping assembly (2) and a radial adjustment assembly (3) at the top. Two sets of horizontal pipes (4) are symmetrically connected to the radial adjustment assembly (3). The ends of the two sets of horizontal pipes (4) that are close to each other are connected to an annular high-pressure nozzle (41). The base plate (1) is also provided with an axial pushing assembly (5). The radial adjustment assembly (3) includes two fixed supports (31) and two movable supports (32). The two fixed supports (31) and the two movable supports (32) are symmetrically arranged on the base plate (1). The two movable supports (32) are located on the left and right sides of the two fixed supports (31). A set of horizontal tubes (4) are connected to the fixed supports (31) and the movable supports (32) on the same side. The radial adjustment assembly (3) is used to drive the horizontal tubes (4) to move radially along the fixed supports (31) and the movable supports (32) on the same side. The axial pushing component (5) is used to push the two movable supports (32) to move in a direction that approaches each other.

2. The heat exchanger cleaning device according to claim 1, characterized in that: The radial adjustment assembly (3) further includes multiple moving cavities (33) that are respectively opened at equal angles on two fixed supports (31) and two moving supports (32). Moving blocks (34) are slidably connected at equal angles in the multiple moving cavities (33). The horizontal tube (4) is movably inserted into the moving blocks (34). The radial adjustment assembly (3) further includes two sets of fixing mechanisms (35) symmetrically arranged on the two moving supports (32). The fixing mechanisms (35) are used to fix the horizontal tube (4).

3. The heat exchanger cleaning device according to claim 2, characterized in that: Each set of fixing mechanisms (35) includes clamping blocks (351) that are respectively fixedly sleeved on a set of horizontal tubes (4). Each set of fixing mechanisms (35) also includes multiple pairs of first cylinders (352) that are connected in a ring at equal angles to the movable support (32). The number of pairs of first cylinders (352) in each set is equal to the number of horizontal tubes (4) in each set. The output end of each pair of first cylinders (352) is symmetrically fixedly connected to two clamping plates (353). Each set of clamping blocks (351) is located in the middle of each set of multiple pairs of clamping plates (353).

4. The heat exchanger cleaning device according to claim 3, characterized in that: The fixed support member (31) includes a first circular plate (311), and the fixed support member (31) also includes a plurality of connecting plates (312) that are fixedly connected in a ring at equal angles to the outer peripheral surface of the first circular plate (311), and the plurality of moving cavities (33) are respectively opened on the side of the plurality of connecting plates (312).

5. A heat exchanger cleaning device according to claim 4, characterized in that: The axial pushing assembly (5) includes two sets of push rods (51) symmetrically fixedly connected to two movable support members (32). The axial pushing assembly (5) also includes two sets of second cylinders (52) symmetrically fixedly connected to the top of the base plate (1). The output ends of the two sets of second cylinders (52) are respectively fixedly connected to the two sets of push rods (51). The movable support member (32) is a second circular plate. The two sets of push rods (51) are symmetrically fixedly connected to the outer circumferential surface of the two second circular plates.

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