Heat exchanger tube nest cleaning device

Abstract

The utility model relates to the technical field of heat exchanger cleaning, in particular to a heat exchanger tube nest cleaning device. In order to solve the problem that an existing high-pressure cleaning fluid flushing mode cannot effectively clean heat exchanger tube nests with thick dirt inside, the novel heat exchanger tube nest cleaning device comprises a water drilling machine, a connecting pipe and a drill bit, and the drill bit is coaxially fixed to an opening in the head end of the connecting pipe in a blocking mode. The tail end of the connecting pipe is coaxially fixed to the threaded connecting end of the water drilling machine and communicates with an output shaft of the water drilling machine in a sealed mode, and the head end of the connecting pipe is provided with an inclined hole obliquely formed in the direction of the tail end of the connecting pipe. The cleaning device for the tube nest of the heat exchanger is simple in structure, low in manufacturing cost, convenient to use and capable of effectively cleaning thick dirt in the tube nest of the heat exchanger, so that the heat exchange effect of the heat exchanger is guaranteed, and normal operation of a production system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger cleaning, in particular to a cleaning device for heat exchanger tubes. Background Art

[0002] As a heat exchanger widely used in current industrial production, the shell-and-tube heat exchanger has the advantages of good heat transfer effect, large area, simple structure, etc. During the long-term use of the pipes of the shell-and-tube heat exchanger, the problem of scale formation inside the tubes will occur, which affects the heat transfer effect and makes the production system unable to operate stably for a long time. The traditional cleaning method for heat exchanger tubes mainly adopts the method of flushing with high-pressure cleaning liquid. When there is less dirt inside the heat exchanger tubes, the method of high-pressure flushing has obvious effect. However, when the dirt inside the heat exchanger tubes is thick, the method of high-pressure flushing is difficult to effectively clean the thick dirt attached to the inner wall of the heat exchanger tubes. Summary of the Invention

[0003] In order to solve the problem that the existing method of flushing with high-pressure cleaning liquid cannot effectively clean the heat exchanger tubes with thick dirt inside, the utility model provides a new cleaning device for heat exchanger tubes.

[0004] The utility model is realized by adopting the following technical scheme:

[0005] A cleaning device for heat exchanger tubes includes a water drill, a connecting pipe, and a drill bit. The drill bit is coaxially fixed at the opening of the first end of the connecting pipe. The second end of the connecting pipe is coaxially fixed to the threaded connection end of the water drill and is in sealed communication with the output shaft of the water drill (it is well known to those skilled in the art that the output shaft and the threaded connection end of the water drill are existing structures of the existing water drill. The threaded connection end itself is used to connect the water drill bit directly equipped with the water drill. The water drill bit directly equipped with the water drill is generally used for wall hole opening, with a large diameter and a short length, and cannot extend deep into the heat exchanger tubes to clean the dirt inside the heat exchanger tubes). The first end of the connecting pipe is provided with an inclined hole that is inclined towards the second end of the connecting pipe.

[0006] During use, align the drill bit in the device with the port of the heat exchanger tube, then turn on the water drill. The drill bit rotates to peel off the dirt inside the heat exchanger tube, and at the same time, water is introduced so that the water sequentially enters the output shaft of the water drill, the connecting pipe, and finally the water is discharged through the inclined hole into the heat exchanger tube and discharged towards the second end of the heat exchanger tube, so that the dirt peeled off by the drill bit inside the heat exchanger tube is discharged with the water flow rotating, thus completing the cleaning of the dirt inside the heat exchanger tube.

[0007] Further, the device further includes a threaded connection cylinder. The head end of the threaded connection cylinder is hermetically sleeved on the tail end of the connecting pipe. The inner wall of the tail end of the threaded connection cylinder is provided with an internal thread adapted to the threaded connection end of the water drill. The tail end of the threaded connection cylinder is threadedly connected to the threaded connection end of the water drill. This structure facilitates the installation and disassembly between the connecting pipe and the water drill.

[0008] Further, the water drill is a water drill with a water seal.

[0009] Further, the diameter of the inclined hole is 3 mm.

[0010] Further, the connecting pipe is a stainless steel tube.

[0011] Further, the outer diameter of the connecting pipe is equal to the diameter of the drill bit.

[0012] The beneficial effects produced by the present utility model are as follows: The heat exchanger tube cleaning device described in the present utility model has a simple structure, low manufacturing cost, convenient use, and can effectively clean the thicker dirt inside the heat exchanger tubes, thereby ensuring the heat exchange effect of the heat exchanger and ensuring the normal operation of the production system. Description of the Drawings

[0013] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with the present utility model, and are used together with the specification to explain the principles of the present utility model.

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] In the figure: 1 - water drill, 2 - connecting pipe, 3 - drill bit, 4 - inclined hole, 5 - threaded connection cylinder, 6 - output shaft, 7 - threaded connection end, 8 - heat exchanger tube. Detailed Embodiments

[0017] In order to be able to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the following will further describe the solution of the present utility model. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0018] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. It should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] The specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0021] As Figure 1 shown, a heat exchanger tube cleaning device includes a water drill 1, a connecting pipe 2, and a drill bit 3. The drill bit 3 is coaxially fixed at the opening of the first end of the connecting pipe 2. The second end of the connecting pipe 2 is coaxially fixed to the threaded connection end 7 of the water drill 1 and is in sealed communication with the output shaft 6 of the water drill 1 (it is well known to those skilled in the art that the output shaft 6 and the threaded connection end 7 of the water drill 1 are existing structures of the existing water drill 1. The threaded connection end 7 itself is used to connect the drilling bit directly equipped with the water drill 1. Generally, the water drill bit directly equipped with the water drill is used for wall hole opening, with a relatively large diameter and a relatively short length, and cannot extend deep into the heat exchanger tube 8 to clean the dirt inside the heat exchanger tube 8). An inclined hole 4 is provided at the first end of the connecting pipe 2 and is arranged obliquely toward the second end of the connecting pipe 2.

[0022] During use, the drill bit 3 of the device is aligned with the port of the heat exchanger tube 8, and then the water drill 1 is turned on. The drill bit 3 rotates to peel off the dirt inside the heat exchanger tube 8. At the same time, water is introduced, so that the water sequentially enters the output shaft 6 of the water drill, the connecting pipe 2, and finally the water is discharged through the inclined hole 4 into the heat exchanger tube 8 and discharged toward the second end of the heat exchanger tube 8, so that the dirt peeled off by the drill bit 3 inside the heat exchanger tube 8 is discharged by the rotation of the water flow, thereby completing the cleaning of the dirt inside the heat exchanger tube 8.

[0023] In specific implementation, the device further includes a threaded connection cylinder 5. The head end of the threaded connection cylinder 5 is hermetically sleeved on the tail end of the connecting pipe 2. The inner wall of the tail end of the threaded connection cylinder 5 is provided with an internal thread adapted to the threaded connection end 7 of the water drill 1. The tail end of the threaded connection cylinder 5 is threadedly connected to the threaded connection end 7 of the water drill 1. This structure facilitates the installation and disassembly between the connecting pipe 2 and the water drill 1.

[0024] In this specific implementation manner, the water drill 1 is a water drill with a water seal. The diameter of the inclined hole 4 is 3 mm. Further, the connecting pipe 2 is a stainless steel tube. The outer diameter of the connecting pipe 2 is equal to the diameter of the drill bit 3.

[0025] The above are only specific implementation manners of the present utility model, enabling those skilled in the art to understand or implement the present utility model. Although detailed descriptions have been made with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the respective embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A heat exchanger tube cleaning device, characterized in that: The invention comprises a water drilling machine (1), a connecting pipe (2), and a drill bit (3); the drill bit (3) is coaxially fixed to the opening of the head end of the connecting pipe (2); the tail end of the connecting pipe (2) is coaxially fixed to the threaded connection end (7) of the water drilling machine (1) and is sealed and connected to the output shaft (6) of the water drilling machine (1); the head end of the connecting pipe (2) is provided with an inclined hole (4) which is arranged obliquely toward the tail end of the connecting pipe (2).

2. A heat exchanger tube cleaning device according to claim 1, characterized in that: The device further comprises a threaded connection tube (5), a sealing sleeve at the head end of the threaded connection tube (5) being fixed to the tail end of the connection pipe (2), an inner wall of the tail end of the threaded connection tube (5) being provided with an internal thread matching the threaded connection end (7) of the water drilling machine (1), and the tail end of the threaded connection tube (5) being threadedly connected to the threaded connection end (7) of the water drilling machine (1).

3. A heat exchanger tube cleaning device according to claim 2, characterized in that: The water drilling rig (1) is a water drilling rig with a water seal.

4. A heat exchanger tube cleaning device according to claim 3, characterized in that: The diameter of the inclined hole (4) is 3 mm.

5. A heat exchanger tube cleaning device according to claim 4, characterized in that: The connecting pipe (2) is a stainless steel tube.

6. A heat exchanger tube cleaning device according to claim 5, characterized in that: The outer diameter of the connecting pipe (2) is equal to the diameter of the drill bit (3).

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