A shell-and-tube heat exchanger cleaning device

Abstract

The utility model relates to shell and tube heat exchanger cleaning technical field, specifically disclose a shell and tube heat exchanger cleaning device, including fixed cylinder, the inside of fixed cylinder is provided with cleaning mechanism, the cleaning mechanism includes setting in the telescopic cylinder of fixed cylinder inside, the recess that opens in the outer wall of telescopic cylinder, the cleaning plate that can be dismantled and connected in the recess inside through the countersunk head bolt, and the sliding plate fixedly connected in one end of telescopic cylinder outer wall, install in fixed cylinder left side, and the output and the fixed connection of sliding plate two electric push rods, the inside of telescopic cylinder is provided with the washing mechanism, through the integration of mechanical scraper and high pressure washing function in an organic whole, through electric push rod drive, can realize the reciprocating cleaning of automation, greatly improved the cleaning efficiency, through setting telescopic cylinder and the telescopic pipe of cleaning pipeline middle part, make the whole cleaning mechanism can lengthen and contract, thereby adapt to the heat exchange pipe of different length, greatly enhanced the versatility of device.

Description

Technical Field

[0001] This utility model relates to the field of shell-and-tube heat exchanger cleaning technology, and specifically discloses a shell-and-tube heat exchanger cleaning device. Background Technology

[0002] Shell-and-tube heat exchangers are the most widely used traditional heat exchangers. Their most basic structure consists of a circular shell with many small tubes for heat exchange. These heat exchangers are often used in hot water heating systems, low-temperature water air conditioning systems, and certain continuous hot water production processes.

[0003] Currently, heat exchanger tube cleaning methods rely on manual mechanical cleaning, which involves operators using hand brushes or scrapers to reach inside the tubes. This is not only labor-intensive and inefficient, but also prone to blind spots due to limitations in the precision of manual operation. Furthermore, the flushing mechanisms of some existing equipment are designed with a fixed length, which cannot be adapted to different specifications. Therefore, a shell-and-tube heat exchanger cleaning device is needed to solve this problem. Utility Model Content

[0004] This utility model proposes a shell-and-tube heat exchanger cleaning device that integrates mechanical scraping with high-pressure flushing, enabling automated reciprocating cleaning, greatly improving cleaning efficiency, and allowing the entire cleaning mechanism to extend and retract, thereby adapting to heat exchange tubes of different lengths and greatly enhancing the versatility of the device.

[0005] This utility model is implemented as follows: a shell-and-tube heat exchanger cleaning device includes a fixed cylinder, and a cleaning mechanism is provided inside the fixed cylinder.

[0006] The cleaning mechanism includes a telescopic cylinder set inside the fixed cylinder, a groove opened on the outer wall of the telescopic cylinder, a cleaning plate detachably connected to the inside of the groove by countersunk bolts, a sliding plate fixedly connected to one end of the outer wall of the telescopic cylinder, and two electric push rods installed on the left side of the fixed cylinder with their output ends fixedly connected to the sliding plate.

[0007] The telescopic cylinder is equipped with a flushing mechanism inside;

[0008] The rinsing mechanism includes a cleaning pipe that runs through the inside of the telescopic cylinder. The left side of the cleaning pipe extends through and to the outside of the fixed cylinder. The middle part of the cleaning pipe is a telescopic pipe. The right side of the cleaning pipe is threaded with a connecting pipe. Spray holes are opened through the outer wall and the right end of the connecting pipe.

[0009] As a preferred embodiment of the shell-and-tube heat exchanger cleaning device of this utility model, the outer wall of the fixed cylinder is provided with at least two sets of abutments, and an elastic component is provided between the outer wall of the fixed cylinder and the abutments.

[0010] As a preferred embodiment of the shell-and-tube heat exchanger cleaning device of this utility model, the outer wall of the cleaning pipe is fixedly connected with two connecting rings that are respectively fixedly connected to the inner wall of the fixed cylinder and the inner wall of the telescopic cylinder.

[0011] As a preferred embodiment of the shell-and-tube heat exchanger cleaning device of this utility model, two supports are fixedly connected to the left side of the fixed cylinder. The outer walls of the two supports are threaded and threaded with threaded rods. The side of the two threaded rods near the heat exchange tube is movably connected to an arc-shaped clamping plate through a bearing.

[0012] As a preferred embodiment of the shell-and-tube heat exchanger cleaning device of this utility model, the inner wall of the fixed cylinder is provided with at least two sliding grooves, and the sliding plate is slidably connected to the sliding grooves.

[0013] As a preferred embodiment of the shell-and-tube heat exchanger cleaning device of this utility model, the cleaning plate is made of an elastic material and has bristles on its outer surface.

[0014] The beneficial effects of this utility model are:

[0015] 1. By integrating the mechanical scraper with the high-pressure flushing function, and driven by the electric actuator, automated reciprocating cleaning can be achieved, which greatly improves cleaning efficiency and reduces manual labor intensity and risk;

[0016] 2. By setting up a telescopic cylinder and a telescopic pipe in the middle of the cleaning pipe, the entire cleaning mechanism can extend and retract, thereby adapting to heat exchange tubes of different lengths and greatly enhancing the versatility of the device. Spray holes are provided on the side wall and end of the connecting pipe, which can perform all-round and thorough rinsing while brushing, which can not only wash away loose dirt, but also clean the brushing area, thus improving the cleaning effect. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is an overall structural diagram of a shell-and-tube heat exchanger cleaning device according to the present invention.

[0019] Figure 2 This is a perspective view of the fixed cylinder and telescopic cylinder of this utility model.

[0020] Figure 3 This is a structural diagram of the cleaning pipeline of this utility model.

[0021] The markings in the diagram are: 1. Fixed cylinder; 101. Elastic component; 102. Support plate; 2. Bracket; 201. Threaded rod; 202. Arc-shaped clamp; 3. Telescopic cylinder; 301. Cleaning plate; 4. Cleaning pipe; 401. Telescopic pipe; 402. Connecting pipe; 403. Spray hole; 5. Sliding plate; 501. Electric actuator. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-3 A shell-and-tube heat exchanger cleaning device includes a fixed cylinder 1, and a cleaning mechanism is provided inside the fixed cylinder 1.

[0024] The cleaning mechanism includes a telescopic cylinder 3 set inside the fixed cylinder 1, a groove opened on the outer wall of the telescopic cylinder 3, a cleaning plate 301 detachably connected to the inside of the groove by countersunk bolts, a sliding plate 5 fixedly connected to one end of the outer wall of the telescopic cylinder 3, and two electric push rods 501 installed on the left side of the fixed cylinder 1 and whose output end is fixedly connected to the sliding plate 5.

[0025] The telescopic cylinder 3 is equipped with a rinsing mechanism inside;

[0026] The rinsing mechanism includes a cleaning pipe 4 that runs through the inside of the telescopic cylinder 3. The left side of the cleaning pipe 4 runs through and extends to the outside of the fixed cylinder 1. The middle part of the cleaning pipe 4 is a telescopic pipe 401. The right side of the cleaning pipe 4 is threadedly connected to a connecting pipe 402. Spray holes 403 are opened through the outer wall and the right end of the connecting pipe 402.

[0027] In this embodiment: The operator aligns the right end of the fixed cylinder 1 with the heat exchange tube inlet to be cleaned. Then, the electric actuator 501 is activated, pushing the sliding plate 5 and the connected telescopic cylinder 3 to the right, allowing the cleaning plate 301 and connecting pipe 402 to enter the heat exchange tube. At this time, high-pressure water is introduced from the left end of the cleaning pipe 4, passing through the telescopic pipe 401 and connecting pipe 402, and spraying out from the spray hole 403 to pre-wet and rinse the tube wall. Simultaneously, the electric actuator 501 drives the telescopic cylinder 3 to reciprocate, and the bristles on the cleaning plate 301 mechanically scrape the tube wall, with the scraped dirt being immediately washed away by the high-pressure water flow. After cleaning, the electric actuator 501 retracts the entire cleaning mechanism, integrating the mechanical scraping and high-pressure rinsing functions into one unit. Driven by the electric actuator 501, automated reciprocating cleaning can be achieved, greatly improving cleaning efficiency, reducing manual labor intensity, and allowing the entire cleaning mechanism to extend and retract, thereby adapting to heat exchange tubes of different lengths and greatly enhancing the versatility of the device.

[0028] As a technical optimization of this utility model, the outer wall of the fixed cylinder 1 is provided with at least two sets of abutment plates 102, and an elastic component 101 is provided between the outer wall of the fixed cylinder 1 and the abutment plates 102.

[0029] In this embodiment, the elastic component 101 (such as a spring) enables the abutment 102 to be pressed tightly against the end face of the heat exchanger tube sheet.

[0030] As a technical optimization of this utility model, the outer wall of the cleaning pipe 4 is fixedly connected with two connecting rings that are respectively fixedly connected to the inner wall of the fixed cylinder 1 and the inner wall of the telescopic cylinder 3.

[0031] In this embodiment, the two connecting rings fix the cleaning pipe 4 to the fixed cylinder 1 and the telescopic cylinder 3 respectively, providing stable support for the long cantilevered cleaning pipe 4 and ensuring the stability and safety of the cleaning process.

[0032] As a technical optimization of this utility model, two brackets 2 are fixedly connected to the left side of the fixed cylinder 1. The outer walls of the two brackets 2 are threaded and threaded with threaded rods 201. The side of the two threaded rods 201 near the heat exchange tube is movably connected to an arc-shaped clamping plate 202 through a bearing.

[0033] In this embodiment: Rotate the threaded rods 201 on both sides of the bracket 2. The threaded rods 201 push the arc-shaped clamping plates 202 forward until they tightly clamp the outer wall of the target heat exchange tube. Through the clamping force on both sides, the entire cleaning device is firmly fixed to the heat exchanger.

[0034] As a technical optimization of this utility model, the inner wall of the fixed cylinder 1 is provided with at least two sliding grooves, and the sliding plate 5 is slidably connected to the sliding grooves.

[0035] In this embodiment, the sliding plate 5 cooperates with the groove on the inner wall of the fixed cylinder 1 to provide precise linear guidance for the reciprocating motion of the telescopic cylinder 3, preventing it from rotating or swaying, and ensuring that the cleaning plate 301 and the rinsing mechanism can smoothly enter and exit the heat exchange tube along a straight line.

[0036] As a technical optimization of this utility model, the cleaning plate 301 is made of elastic material and has bristles on its outer surface.

[0037] In this embodiment, the cleaning plate 301, made of an elastic material (such as rubber or polyurethane), has a certain deformation capability, which can better fit heat exchange tubes with different inner diameters or slight deformations, thereby improving the cleaning coverage. The bristles on the outer surface can penetrate deep into the dirt for effective cleaning.

[0038] The working principle and usage process of this utility model are as follows: Align the right end of the fixed cylinder 1 with the inlet of the heat exchange tube to be cleaned, so that the axis of the fixed cylinder 1 coincides with the axis of the heat exchange tube. At this time, the elastic component 101 (such as a compression spring) on ​​the outer wall of the fixed cylinder 1 generates elastic reaction force due to pressure, pushing the abutment plate 102 to tightly fit against the end face of the heat exchanger tube sheet, completing the initial positioning and buffering; then, rotate the threaded rods 201 on the two sets of brackets 2 on the left side of the fixed cylinder 1. When the threaded rods 201 rotate, they can push the arc-shaped clamping plates 202 to move radially along the heat exchange tube until the two sets of arc-shaped clamping plates 202 tightly clamp the outer wall of the heat exchange tube from both sides. Through the dual fixing method of "end face abutment + radial clamping", the entire device is firmly locked on the heat exchanger to avoid displacement or shaking during the cleaning process;

[0039] Activate the two electric actuators 501 on the left side of the fixed cylinder 1. The output end of the electric actuator 501 pushes the sliding plate 5, which is fixedly connected to it, to slide to the right along the slide groove, thereby driving the telescopic cylinder 3 connected to the sliding plate 5 to extend to the right in sync. During this process, the cleaning plate 301 installed in the groove on the outer wall of the telescopic cylinder 3 by countersunk bolts, and the connecting pipe 402 threaded at the right end of the cleaning pipe 4, enter the heat exchange tube together with the telescopic cylinder 3 until the extension length matches the actual length of the heat exchange tube (the stroke of the electric actuator 501 can be preset and adjusted according to the tube length).

[0040] Once the cleaning plate 301 and connecting pipe 402 reach the designated position, a high-pressure water source (usually 3-8 MPa) is connected to the left end of the cleaning pipe 4. The high-pressure water flows sequentially through the main body of the cleaning pipe 4, the telescopic pipe 401, and the connecting pipe 402, and finally sprays out in multiple directions from the spray holes 403 opened on the outer wall and right end of the connecting pipe 402. First, the inner wall of the heat exchange tube is pre-wetted to soften stubborn scale. At the same time, the electric actuator 501 drives the telescopic cylinder 3 to reciprocate along the slide groove, which in turn drives the cleaning plate 301 to reciprocate along the pipe wall. Because the cleaning plate 301 is made of elastic material (such as polyurethane or oil-resistant rubber), it has a certain deformation capability and can closely fit the inner wall of heat exchange tubes with different inner diameters. The bristles on its outer surface can penetrate into the scale gaps and mechanically scrape off the softened dirt. Meanwhile, the high-pressure water jet from the spray hole 403 immediately flushes the scraped dirt away from the tube wall and discharges it from the other end of the heat exchange tube with the water flow, avoiding secondary adhesion of dirt and realizing the simultaneous "scraping-rinsing" process.

[0041] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A shell-and-tube heat exchanger cleaning device, comprising a fixed cylinder (1), characterized in that: The fixed cylinder (1) is equipped with a cleaning mechanism inside; The cleaning mechanism includes a telescopic cylinder (3) disposed inside the fixed cylinder (1), a groove opened on the outer wall of the telescopic cylinder (3), a cleaning plate (301) detachably connected to the groove by countersunk bolts, a sliding plate (5) fixedly connected to one end of the outer wall of the telescopic cylinder (3), and two electric push rods (501) installed on the left side of the fixed cylinder (1) and whose output end is fixedly connected to the sliding plate (5). The telescopic cylinder (3) is equipped with a flushing mechanism inside; The rinsing mechanism includes a cleaning pipe (4) that runs through the inside of the telescopic cylinder (3). The left side of the cleaning pipe (4) extends through and to the outside of the fixed cylinder (1). The middle part of the cleaning pipe (4) is a telescopic pipe (401). The right side of the cleaning pipe (4) is threaded with a connecting pipe (402). Spray holes (403) are opened through the outer wall and the right end of the connecting pipe (402).

2. The shell-and-tube heat exchanger cleaning device according to claim 1, characterized in that: The outer wall of the fixed cylinder (1) is provided with at least two sets of abutment plates (102), and an elastic component (101) is provided between the outer wall of the fixed cylinder (1) and the abutment plates (102).

3. The shell-and-tube heat exchanger cleaning device according to claim 1, characterized in that: The outer wall of the cleaning pipe (4) is fixedly connected to two connecting rings that are respectively fixedly connected to the inner wall of the fixed cylinder (1) and the inner wall of the telescopic cylinder (3).

4. The shell-and-tube heat exchanger cleaning device according to claim 1, characterized in that: Two brackets (2) are fixedly connected to the left side of the fixed cylinder (1). The outer walls of the two brackets (2) are threaded and threaded with threaded rods (201). The two threaded rods (201) are movably connected to an arc-shaped clamp (202) via bearings on the side near the heat exchange tube.

5. The shell-and-tube heat exchanger cleaning device according to claim 1, characterized in that: The inner wall of the fixed cylinder (1) is provided with at least two sliding grooves, and the sliding plate (5) is slidably connected to the sliding grooves.

6. The shell-and-tube heat exchanger cleaning device according to claim 1, characterized in that: The cleaning plate (301) is made of an elastic material and has bristles on its outer surface.

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