Self-worming descaling tube

Abstract

This utility model discloses a self-propelled peristaltic descaling tube, including a tube body and at least one descaling spring installed on the tube wall. The descaling spring is formed by coiling a bimetallic strip and is generally cylindrical. The self-propelled peristaltic descaling tube provided by this utility model uses a descaling spring made of a bimetallic strip wound around the inner or outer side of the tube body. When the temperature changes, the descaling spring itself undergoes direct mechanical deformation, at which point the brittle and fragile scale adhering to the descaling spring is shaken off, making the boiler tube less prone to scaling and greatly extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of pipe and pipeline descaling technology, specifically to a self-propelled peristaltic descaling pipe. Background Technology

[0002] Scale buildup in pipelines is a significant problem, often causing flow obstruction and a range of issues, which can severely impact equipment downtime or even render it unusable. Taking boiler equipment as an example, boiler tubes are crucial components used to transport high-temperature, high-pressure water, steam, or flue gas. They are used in boiler water walls, superheaters, economizers, etc., and must withstand high-pressure, high-temperature water or steam, requiring high heat and pressure resistance. Their performance directly affects the boiler's safety and efficiency.

[0003] However, the primary hazard to boiler tubes comes from scale. To date, scale remains a major concern affecting boiler safety and efficiency. Although various measures have been taken, such as using softened and purified water sources and adding scale inhibitors, and these measures involve high equipment investment and operating material costs, they have still failed to effectively prevent scale formation on boiler tubes. Once scale forms on boiler tubes, acid washing is necessary for descaling. The acid washing process is cumbersome, labor-intensive, time-consuming, and pollutes the environment. Furthermore, it can cause corrosion damage to the boiler tubes if not handled carefully. In addition, scale formation on boiler tubes leads to serious resource waste and safety hazards. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a self-propelled peristaltic descaling pipe to solve the problem that the pipes in the existing technology are prone to scaling and difficult to clean.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a self-propelled peristaltic descaling tube, including a tube body and a descaling coil spring installed on the tube wall of the tube body.

[0006] The descaling coil spring is made of bimetallic strips and is generally cylindrical.

[0007] This utility model also has the following technical features:

[0008] The descaling coil spring includes a first descaling coil spring, which is installed on the outer wall of the pipe body.

[0009] The driven layer of the first descaling coil spring is located inside the first descaling coil spring.

[0010] The descaling coil spring also includes a second descaling coil spring, which is installed on the inner wall of the pipe body.

[0011] The driven layer of the second descaling coil spring is located on the outside of the second descaling coil spring.

[0012] The descaling coil spring is also vertically mounted with multiple perforated connecting pieces at both ends along its circumference, with the perforated connecting pieces facing away from the axis of the descaling coil spring.

[0013] The perforated connecting piece is also equipped with a pusher plate, which is made of a bimetallic sheet, and the driven layer of the pusher plate faces the side of the perforated connecting piece.

[0014] The descaling coil springs are connected by a pusher disc.

[0015] The perforated connecting piece is riveted to the push plate.

[0016] Compared with the prior art, this utility model has the following technical effects:

[0017] (I) The self-propelled peristaltic descaling tube provided by this utility model uses a descaling spring made of bimetallic strips wrapped around the inner or outer side of the tube body. When the temperature changes, the descaling spring itself undergoes mechanical deformation. At this time, the brittle and fragile scale attached to the descaling spring will be shaken off, making the pipeline less prone to scaling and greatly extending its service life.

[0018] (II) The self-propelled peristaltic descaling tube provided by this utility model has a simple structure, is easy to operate, is safe and reliable, and has strong adaptability. Attached Figure Description

[0019] Figure 1 This is an exploded view of the two-section descaling coil spring of this utility model.

[0020] Figure 2 This is a schematic diagram of the descaling coil spring of this utility model.

[0021] Figure 3 This is a schematic diagram of the connection structure of the two descaling coil springs of this utility model.

[0022] Figure 4 This is a schematic diagram of the push plate structure of this utility model.

[0023] The meanings of the labels in the attached diagram are as follows:

[0024] 1-Descaling coil spring, 2-Connecting piece with hole, 3-Pushing disc.

[0025] 1-1-First descaling coil spring.

[0026] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0027] Unless otherwise specified, all components in this invention are made from components known in the prior art.

[0028] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0029] This invention, based on the principle of "if it can't be blocked, then dredge it," employs a peristaltic shaking method to remove scale. In other words, since measures at the water source are insufficient to effectively solve the scaling problem, measures are taken to protect the pipeline itself. With the emergence of new materials and processes, previously unsolvable problems have been effectively resolved. Currently, there is a bimetallic sheet material that exhibits the characteristic of directly undergoing mechanical deformation with temperature changes; this invention is based on this characteristic.

[0030] Example 1:

[0031] This embodiment provides a self-propelled peristaltic descaling tube, such as... Figures 1-4 As shown, it includes a pipe body and a descaling coil spring 1 installed on the pipe wall of the pipe body.

[0032] The descaling coil spring 1 is made of a bimetallic strip and is generally cylindrical.

[0033] A bimetallic sheet is a composite material composed of two or more metals or other materials with suitable properties. Also known as a thermal bimetallic sheet, due to the different coefficients of thermal expansion of its constituent layers, when the temperature changes, the deformation of the active layer is greater than that of the passive layer. This causes the bimetallic sheet to bend towards the passive layer, resulting in a change in the curvature of the composite material and thus deformation.

[0034] The descaling spring 1, made of bimetallic strip, undergoes mechanical deformation when the temperature changes, at which point the brittle and fragile scale adhering to the descaling spring 1 will be shaken off.

[0035] As a preferred embodiment:

[0036] The descaling coil spring 1 includes a first descaling coil spring 1-1, which is installed on the outer wall of the pipe body.

[0037] The driven layer of the first descaling coil spring 1-1 is located on the inner side of the first descaling coil spring 1-1.

[0038] This applies to situations where water is on the outside of the pipeline, such as fire-tube boiler tubes. Therefore, the first descaling coil spring 1-1 is installed on the outer wall of the pipe body.

[0039] As a preferred embodiment:

[0040] The descaling spring 1 also includes a second descaling spring, which is installed on the inner wall of the pipe body.

[0041] The driven layer of the second descaling coil spring is located on the outside of the second descaling coil spring.

[0042] This applies to situations where water is inside the pipe, such as water pipes or boiler tubes. Therefore, the first descaling coil spring 1-1 is installed on the inner wall of the pipe body.

[0043] As a preferred embodiment:

[0044] The descaling coil spring 1 has multiple perforated connecting pieces 2 vertically installed at both ends along its circumference, with the perforated connecting pieces 2 facing away from the axis of the descaling coil spring 1.

[0045] The perforated connecting piece 2 is also equipped with a pusher plate 3, which is made of a bimetallic sheet, and the driven layer of the pusher plate 3 faces the side of the perforated connecting piece 2.

[0046] The descaling coil springs 1 are connected by a pusher disc 3. When the pusher disc 3 is used for connection, the pusher discs 3 on the two descaling coil springs 1 are connected on the outer side, so that the other side of the pair of pusher discs 3 can be far away from each other.

[0047] When the temperature changes, the descaling coil spring 1 undergoes mechanical deformation directly, and the bimetallic pusher plate 3 pushes the descaling coil spring 1 to move axially, so that the scale remaining on the boiler tube is scraped off by the descaling coil spring 1.

[0048] As a preferred embodiment:

[0049] The perforated connecting piece 2 is riveted to the push plate 3.

[0050] The specific working process of this utility model:

[0051] A 1.0 mm thick and 30 mm wide bimetallic strip is made into a coiled spring shape with the same diameter as the boiler tube. The driven layer of the bimetallic strip is placed inside the coiled spring, so that it creeps and coils inward radially as the temperature rises.

[0052] The bimetallic strip's performance parameters are set so that the coil springs creep inward and coil tightly onto the outer wall of the boiler tube when the temperature is above 60℃ (the temperature at which scaling is likely to occur), and the pushing disc begins to push the two coil springs to move axially towards each other when the temperature is below 60℃.

[0053] Due to the characteristics of the bimetallic strip, the higher the temperature of the descaling spring 1, the tighter it clamps, forming an armor-like protection for the outer wall of the boiler tube. At this time, the reverse peristalsis of the pushing disc 3 is ineffective, so that the scale can only adhere to the descaling spring 1. Then, due to the temperature characteristics of the bimetallic strip, when the temperature drops below 60℃, the descaling spring 1 begins to peristalt and expand outward, loosely fitting onto the outer wall of the boiler tube. At this time, the brittle and fragile scale adhering to the descaling spring 1 will be shaken off. At the same time, the pushing disc 3 of the bimetallic strip pushes the loosened descaling spring 1 to move axially, scraping off the scale remaining on the boiler tube. All the scale falls to the bottom of the boiler and is discharged with the boiler drain pipe. Thus, the self-powered peristaltic descaling tube of this utility model achieves the self-powered descaling function.

[0054] The above describes the descaling process for fire-tube boilers. Similarly, for water-tube boilers, simply place the driven layer of the bimetallic strip's descaling spring 1 on the outside of the descaling spring 1, and insert it along with the pusher plate 3 (which can be omitted for small-diameter boiler tubes) into the inner wall of the boiler tube. This will achieve the same descaling function. Furthermore, the bimetallic strip itself is a heat-sensitive metal, so it has excellent thermal conductivity and will not affect the original thermal conductivity of the boiler tube; on the contrary, it will improve it. Simultaneously, the bimetallic strip has rust-proof properties and will not cause any pollution to the boiler water.

[0055] The above technical solutions are only preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art without creative effort within the technical scope disclosed in this utility model are covered within the protection scope of this utility model.

Claims

1. A self-propelled peristaltic descaling tube, comprising a tube body, characterized in that, It also includes at least one descaling coil spring (1) installed on the pipe wall of the pipe body; The descaling coil spring (1) is made of bimetallic strips and is generally cylindrical.

2. The self-propelled peristaltic descaling tube as described in claim 1, characterized in that, The descaling coil spring (1) includes a first descaling coil spring (1-1), which is installed on the outer wall of the pipe body; The driven layer of the first descaling coil spring (1-1) is located inside the first descaling coil spring (1-1).

3. The self-propelled peristaltic descaling tube as described in claim 1, characterized in that, The descaling coil spring (1) also includes a second descaling coil spring, which is installed on the inner wall of the pipe body; The driven layer of the second descaling coil spring is located on the outside of the second descaling coil spring.

4. The self-propelled peristaltic descaling tube as described in claim 1, characterized in that, The descaling coil spring (1) is also vertically mounted with multiple perforated connecting pieces (2) at both ends along its circumference, and the perforated connecting pieces (2) face away from the axis of the descaling coil spring (1). The perforated connecting piece (2) is also equipped with a pusher plate (3), which is made of a bimetallic sheet, and the driven layer of the pusher plate (3) faces the perforated connecting piece (2). The descaling coil springs (1) are connected by a pusher disc (3).

5. The self-propelled peristaltic descaling tube as described in claim 4, characterized in that, The perforated connecting piece (2) is riveted to the push plate (3).

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