Anti-abrasion device for pipeline rubber expansion joint

Abstract

The utility model discloses a pipeline rubber expansion joint anti-abrasion device which comprises a rubber outer sleeve, one side of the rubber outer sleeve is fixedly connected with a first flange, one side of the first flange is fixedly connected with a first connecting flange, one side of the first connecting flange is fixedly connected with an anti-abrasion lining, and the other side of the rubber outer sleeve is fixedly connected with a second flange. According to the pipeline rubber expansion joint anti-abrasion device, after the device is put into use, the rubber expansion joint is internally provided with the anti-abrasion lining, and the ceramic chips in the anti-abrasion lining have the characteristics of high temperature resistance, corrosion resistance and abrasion resistance, so that the expansion joint is prevented from being directly scoured by a medium; due to the fact that part of liquid can form vortexes to scour the inner wall of the expansion joint through medium turbulence, the silicone structural sealant is filled in the gap, the silicone structural sealant can block the gap and has a certain swelling capacity, the problem of back flushing is perfectly solved, and therefore the expansion telescopic performance of a system is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-wear structure for pipe rubber sleeves, and in particular to an anti-wear device for pipe rubber expansion joints. Background Technology

[0002] Rubber expansion joints are commonly used for inlet and outlet connections of slurry pumps, slag pumps, and ash pumps in industries such as power plants and metallurgy. These joints compensate for misalignment between the pump body and pipeline connections, absorb system vibration, and protect the equipment for safe and stable operation. They are affordable and widely used, and their application in clean systems is mature and stable. However, under the influence of highly corrosive and abrasive media such as slurry and ash systems, their service life is short, reliability is low, and expansion joints are prone to bursting at any time. If not detected in time, this can cause large-scale pollution of the plant, even forcing equipment shutdowns and environmental pollution incidents. Leaks are also unpredictable and difficult to control. In power plant desulfurization slurry systems, the lifespan of expansion joints is generally 6-12 months. Especially in Guizhou, due to the high hardness of limestone caused by karst topography, the wear of expansion joints is accelerated, resulting in a lifespan of only 3-6 months and frequent bursting incidents.

[0003] Currently, the expansion joints are thickened, reinforced with inner polyester fabric, and molded using high-quality rubber in multiple layers through integral vulcanization. However, this only extends the lifespan of the expansion joints by about one month. To ensure the safety and stability of the equipment, power plants generally conduct regular inspections and replace them in advance. This increases the cost of manpower and materials significantly, and the maintenance material costs remain high, putting enormous pressure on the refined management of power plants. Utility Model Content

[0004] The main purpose of this utility model is to provide a wear-resistant device for pipe rubber expansion joints, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A wear-resistant device for a pipe rubber expansion joint includes a rubber jacket, a flange 1 fixedly connected to one side of the rubber jacket, a connecting flange 1 fixedly connected to one side of the flange 1, a wear-resistant inner liner fixedly connected to one side of the connecting flange 1, and a flange 2 fixedly connected to the other side of the rubber jacket.

[0007] The wear-resistant liner includes a seamless steel pipe, the inner wall of which is fixedly connected with ceramic adhesive, and the inner wall of which is fixedly connected with ceramic sheets.

[0008] In order to achieve the effect of fixing with bolts to fit the flange two, as a wear-resistant device for pipe rubber expansion joints of this utility model, the outer surface of the flange two is fixedly connected to the connecting flange two, and the inner wall of the connecting flange two is fixedly connected to the insertion pipe.

[0009] In order to achieve the effect of buffering the impact force of the medium entering, as a wear-resistant device for a pipe rubber expansion joint of this utility model, the inner wall of the insertion tube is fixedly connected with four protrusions.

[0010] In order to facilitate the entry and exit of the medium, as a wear-resistant device for a pipe rubber expansion joint of this utility model, one end of the rubber jacket is provided with a pipe outlet and the other end of the rubber jacket is provided with a pipe inlet.

[0011] In order to fill the gap between the rubber outer jacket and the wear-resistant inner liner, as an anti-wear device for pipe rubber expansion joints of this utility model, a filler is provided between the rubber outer jacket and the wear-resistant inner liner, and the filler material is silicone structural sealant.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This anti-wear device for pipeline rubber expansion joints consists of a rubber outer jacket, flange one, connecting flange one, wear-resistant inner lining, seamless steel pipe, ceramic adhesive, and ceramic plates. After the device is put into use, the inside of the rubber expansion joint is lined with a wear-resistant inner lining. The ceramic plates in the wear-resistant inner lining have the characteristics of high temperature resistance, corrosion resistance, and wear resistance, preventing the expansion joint from being directly eroded by the medium. At the same time, since there is a certain gap between the wear-resistant inner lining and the expansion joint, due to the turbulent flow of the medium, some liquid will form vortices that erode the inner wall of the expansion joint. Therefore, silicone structural sealant is filled in the gap. The silicone structural sealant can both seal the gap and have a certain expansion capacity, perfectly solving the back erosion problem. Thus, because the steel pipe lining isolates the medium from direct contact and erosion with the expansion joint, the corrosion resistance is improved. The overall structure is simple and convenient to construct, and the construction quality is easy to control. At the same time, it can ensure the expansion and contraction performance of the system.

[0014] 2. This anti-wear device for the pipe rubber expansion joint consists of a second flange, a second connecting flange, an insert pipe, and four protrusions. The second connecting flange is fastened to the second flange and can be fixed with bolts. The insert pipe is fixed to the second connecting flange and inserted into the pipe inlet. The insert pipe has four protrusions inside, which can effectively buffer the inertial force of the medium after it enters, thereby reducing the impact and wear of the medium on the pipe wall. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the anti-wear device for a pipe rubber expansion joint according to Embodiment 1 of this utility model;

[0016] Figure 2 This is a bottom-view isometric structural diagram of an anti-wear device for a pipe rubber expansion joint according to Embodiment 1 of this utility model;

[0017] Figure 3 This is an exploded structural diagram of an anti-wear device for a pipe rubber expansion joint according to Embodiment 1 of this utility model;

[0018] Figure 4 This is an isometric structural schematic diagram of the wear-resistant liner in a wear-resistant device for a pipe rubber expansion joint according to Embodiment 1 of this utility model;

[0019] Figure 5 This is an isometric structural diagram of the protrusion in an anti-wear device for a pipe rubber expansion joint according to Embodiment 1 of this utility model;

[0020] Figure 6 This is a frontal cross-sectional view of a wear-resistant device for a pipe rubber expansion joint according to Embodiment 1 of this utility model;

[0021] Figure 7 This is a cross-sectional structural schematic diagram of the wear-resistant liner in a wear-resistant device for a pipe rubber expansion joint according to Embodiment 1 of this utility model;

[0022] Figure 8 This is an isometric structural diagram of the rubber jacket in an anti-wear device for a pipe rubber expansion joint according to Embodiment 1 of this utility model.

[0023] In the diagram: 1. Rubber jacket; 2. Flange 1; 3. Connecting flange 1; 4. Wear-resistant lining; 401. Seamless steel pipe; 402. Ceramic adhesive; 403. Ceramic sheet; 5. Flange 2; 6. Connecting flange 2; 7. Insert pipe; 8. Protrusion; 9. Pipe outlet; 10. Pipe inlet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0025] Example 1

[0026] like Figure 1-8 As shown, a wear-resistant device for a pipe rubber expansion joint includes a rubber jacket 1, a flange 2 fixedly connected to one side of the rubber jacket 1, a connecting flange 3 fixedly connected to one side of the flange 2, a wear-resistant inner liner 4 fixedly connected to one side of the connecting flange 3, and a flange 5 fixedly connected to the other side of the rubber jacket 1.

[0027] The wear-resistant liner 4 includes a seamless steel pipe 401, a ceramic adhesive 402 fixedly connected to the inner wall of the seamless steel pipe 401, and a ceramic sheet 403 fixedly connected to the inner wall of the ceramic adhesive 402.

[0028] In practical use, the rubber outer jacket 1, flange 2, connecting flange 3, wear-resistant liner 4, seamless steel pipe 401, ceramic adhesive 402, and ceramic sheet 403 are arranged to form a pipe rubber expansion joint. Flange 2 is located at the outlet 9 end of the rubber outer jacket 1. The connecting flange 3 and wear-resistant liner 4 are fixed together, with the wear-resistant liner 4 inserted inside the rubber outer jacket 1. The connecting flange 3 and flange 2 are fitted together and can be fixed with bolts. The wear-resistant liner 4 is composed of seamless steel pipe 401, ceramic adhesive 402, and ceramic sheet 403. The space between the wear-resistant liner 4 and the rubber outer jacket 1 is filled with silicone structural sealant. After the device is put into use, the rubber... The expansion joint has a wear-resistant liner 4 inside, and the ceramic sheet 403 in the wear-resistant liner 4 has the characteristics of high temperature resistance, corrosion resistance and wear resistance, which prevents the expansion joint from being directly eroded by the medium. At the same time, since there is a certain gap between the wear-resistant liner 4 and the expansion joint, some liquid will form vortices and erode the inner wall of the expansion joint due to the turbulent flow of the medium. Therefore, silicone structural sealant is filled in the gap. The silicone structural sealant can not only seal the gap, but also has a certain expansion capacity, which perfectly solves the back erosion problem. Thus, because the steel pipe liner isolates the medium from direct contact and erosion with the expansion joint, the corrosion resistance is improved. The overall structure is simple and convenient to construct, and the construction quality is easy to control. At the same time, it can ensure the expansion and contraction performance of the system.

[0029] In this embodiment, a connecting flange 6 is fixedly connected to the outer surface of flange 2 5, and an insertion tube 7 is fixedly connected to the inner wall of connecting flange 2 6.

[0030] In practical use, flange 26 is connected and bolts are used to fix it in conjunction with flange 25.

[0031] In this embodiment, four protrusions 8 are fixedly connected to the inner wall of the insertion tube 7.

[0032] In practical use, the impact force of the buffer medium is reduced by setting the bump 8.

[0033] In this embodiment, one end of the rubber jacket 1 is provided with a pipe outlet 9, and the other end of the rubber jacket 1 is provided with a pipe inlet 10.

[0034] In practical use, the setting of pipe outlet 9 and pipe inlet 10 facilitates the entry and exit of the medium.

[0035] In this embodiment, a filler is provided between the rubber outer jacket 1 and the wear-resistant inner liner 4, and the filler material is silicone structural sealant.

[0036] In practical use, the gap between the rubber outer jacket 1 and the wear-resistant inner liner 4 is filled by applying silicone structural sealant.

[0037] Working principle: After the device is put into use, the inside of the rubber expansion joint is a wear-resistant liner 4. The ceramic sheet 403 in the wear-resistant liner 4 has the characteristics of high temperature resistance, corrosion resistance and wear resistance, which prevents the expansion joint from being directly eroded by the medium. At the same time, since there is a certain gap between the wear-resistant liner 4 and the expansion joint, due to the turbulent flow of the medium, some liquid will form a vortex to erode the inner wall of the expansion joint. Therefore, silicone structural sealant is filled in the gap. The silicone structural sealant can not only seal the gap but also has a certain expansion capacity, which perfectly solves the back erosion problem.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe rubber expansion joint anti-abrasion device comprising a rubber jacket (1), characterized in that: One side of the rubber jacket (1) is fixedly connected with flange one (2), one side of the flange one (2) is fixedly connected with connecting flange one (3), one side of the connecting flange one (3) is fixedly connected with wear-resistant lining (4), the other side of the rubber jacket (1) is fixedly connected with flange two (5); The wear-resistant lining (4) comprises a seamless steel pipe (401), the inner wall of the seamless steel pipe (401) is fixedly connected with ceramic glue (402), and the inner wall of the ceramic glue (402) is fixedly connected with ceramic sheet (403).

2. A pipe rubber expansion joint anti-abrasion device according to claim 1, characterized in that: The outer surface of the flange two (5) is fixedly connected with connecting flange two (6), and the inner wall of the connecting flange two (6) is fixedly connected with insertion pipe (7).

3. A pipe rubber expansion joint anti-abrasion device according to claim 2, characterized in that: The inner wall of the insertion pipe (7) is fixedly connected with lug (8), and the number of the lug (8) is four.

4. A wear assembly for a pipe expansion joint as defined in claim 1 wherein: One end of the rubber jacket (1) is provided with pipe outlet (9), and the other end of the rubber jacket (1) is provided with pipe inlet (10).

5. A pipe rubber expansion joint anti-abrasion device according to claim 1, characterized in that: A filler is arranged between the rubber jacket (1) and the wear-resistant lining (4), and the material of the filler is silicone structural sealant.

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