Composite wear-resistant bent pipe

Abstract

The utility model discloses a composite wear-resistant elbow pipe, which comprises an outer pipe and a wear-resistant layer installed inside the outer pipe, the outer wall of the upper end of the outer pipe is fixedly connected with a transparent block, a calibration strip a is embedded inside the outer wall of the lower end of the transparent block, and a calibration strip b is embedded inside the outer wall of the upper end of the wear-resistant layer. The circular outer wall of the outer pipe is sleeved with a heat preservation layer, the circular outer wall of the heat preservation layer is sleeved with a pressure-resistant shell, a transparent block, a calibration strip a and a calibration strip b are installed, the distance between the calibration strip a and the calibration strip b can be observed, and when the position distance between the calibration strip a and the calibration strip b deviates, the calibration strip a and the calibration strip b can be calibrated. If the wear-resistant layer is damaged, it represents that the wear-resistant layer and the outer pipe are delaminated, the current wear-resistant layer can be maintained in time, the situation that the delaminating phenomenon is found only when the subsequent outer pipe is damaged, and consequently the situation that the loss is increased is found is avoided, and the loss is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to composite elbows, and specifically relates to a composite wear-resistant elbow. Background Art

[0002] The elbow made of a composite of wear-resistant materials and other materials is used in pipeline systems for conveying abrasive granular materials. Composite wear-resistant elbows usually use inner lining wear-resistant materials, such as ceramics, wear-resistant alloys, etc., to increase the wear resistance of the pipeline. At the same time, the outer layer uses other materials to enhance the pressure resistance of the pipeline. However, after long-term use, delamination will occur between the wear-resistant layer and the outer pipe, and it is difficult to detect the delamination after it occurs, resulting in the inner wall of the outer pipe being exposed to the material conveyed inside the pipeline, accelerating the wear of the outer pipe and causing the outer pipe to break. The delamination phenomenon can only be detected after the internal material is ejected. Utility Model Content

[0003] The utility model aims to provide a composite wear-resistant elbow pipe to solve the problem that delamination occurs between the wear-resistant layer and the outer pipe in the above-mentioned background technology, and the problem is not easy to find after the delamination occurs.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite wear-resistant elbow pipe, comprising an outer pipe and a wear-resistant layer installed inside the outer pipe;

[0005] A transparent block is fixedly connected to the outer wall of the upper end of the outer tube, a calibration strip a is embedded in the inner part of the outer wall of the lower end of the transparent block, and a calibration strip b is embedded in the inner part of the outer wall of the upper end of the wear-resistant layer.

[0006] Preferably, the circular outer wall of the outer tube is sleeved with a heat-insulating layer, and the circular outer wall of the heat-insulating layer is sleeved with a pressure-resistant outer shell.

[0007] Preferably, a space is reserved between the calibration strip a and the calibration strip b, and the transparent block is made of a transparent acrylic material.

[0008] Preferably, an upwardly opening positioning opening is provided between the pressure-resistant outer shell and the heat-insulating layer for bonding and fixing of the transparent block and the outer tube, and the pressure-resistant outer shell is made of stainless steel.

[0009] Preferably, the front end outer wall of the outer tube is fixedly connected with a flange interface, and a plurality of mounting holes are provided inside the front end outer wall of the flange interface.

[0010] Preferably, two flange interfaces are provided, and the wear-resistant layer is made of ceramic material.

[0011] Preferably, the outer tube and the wear-resistant layer are fixedly connected by gluing, and the outer tube is made of carbon steel.

[0012] Compared with the prior art, the utility model provides a composite wear-resistant elbow, which has the following beneficial effects:

[0013] By installing the transparent block, the calibration strip a and the calibration strip b, the distance between the calibration strip a and the calibration strip b can be observed. When the position distance between the calibration strip a and the calibration strip b is offset, it means that delamination has occurred between the wear-resistant layer and the outer pipe. The current wear-resistant layer can be repaired in time to avoid the delamination being discovered only when the outer pipe is damaged later, which results in the discovery of the delamination only when the loss is aggravated. This reduces losses and can reduce the occurrence of accidents caused by outer pipe rupture, thereby ensuring the safety of personnel and others. Delamination problems can be discovered in time and repairs can be made in time to reduce maintenance costs and increase the service life of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of a composite wear-resistant elbow structure.

[0015] Figure 2 The utility model is a schematic diagram of a composite wear-resistant elbow structure.

[0016] Figure 3 It is a schematic diagram of the partial structure of the transparent block area in a side view section of the utility model.

[0017] In the figure: 1. Outer tube; 2. Wear-resistant layer; 3. Flange interface; 4. Mounting hole; 5. Pressure-resistant shell; 6. Transparent block; 7. Calibration strip a; 8. Calibration strip b; 9. Insulation layer; 10. Positioning port. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides Figure 1-3 A composite wear-resistant elbow pipe shown includes an outer pipe 1 and a wear-resistant layer 2 installed inside the outer pipe 1. When the granular material is transported in the pipe, the wear-resistant layer 2 reduces the friction of the material flow, thereby reducing the wear of the material itself and the wear of the outer pipe 1 for transporting the material;

[0020] A transparent block 6 is fixedly connected to the outer wall of the upper end of the outer tube 1, a calibration strip a7 is embedded in the outer wall of the lower end of the transparent block 6, and a calibration strip b8 is embedded in the outer wall of the upper end of the wear-resistant layer 2. When delamination of the wear-resistant layer 2 occurs, the distance between the calibration strip a7 and the calibration strip b8 can be observed through the transparent block 6. If the difference in position is large or the calibration strip b8 cannot be observed, it means that delamination of the wear-resistant layer 2 has occurred.

[0021] like Figure 3 As shown, the circular outer wall of the outer tube 1 is sleeved with a heat-insulating layer 9, the circular outer wall of the heat-insulating layer 9 is sleeved with a pressure-resistant outer shell 5, a spacing is reserved between the calibration strip a7 and the calibration strip b8, and the transparent block 6 is made of transparent acrylic material.

[0022] The pressure-resistant shell 5 is used to increase the contact distance between the outer tube 1 and external heavy objects, thereby reducing the damage to the upper side of the outer tube 1 caused by the downward pressure of heavy objects. The thermal insulation layer 9 is added to block the external cold air from corroding the inside of the wear-resistant layer 2, which causes the wear-resistant layer 2 to be affected by low temperature and ice, and friction between materials. Whether delamination of the wear-resistant layer 2 occurs can be judged by the reserved spacing between the calibration bar a7 and the calibration bar b8.

[0023] like Figure 3 As shown, an upwardly opening positioning opening 10 is provided between the pressure-resistant shell 5 and the heat-insulating layer 9 for bonding and fixing the transparent block 6 and the outer tube 1 . The pressure-resistant shell 5 is made of stainless steel.

[0024] The pressure-resistant shell 5 made of stainless steel has good pressure resistance and can reduce the deformation caused by external forces.

[0025] like Figure 1 As shown, the front end outer wall of the outer tube 1 is fixedly connected with a flange interface 3, and a plurality of mounting holes 4 are opened inside the front end outer wall of the flange interface 3. The flange interface 3 is provided with two, and the wear-resistant layer 2 is made of ceramic material. The outer tube 1 and the wear-resistant layer 2 are fixedly connected by gluing, and the outer tube 1 is made of carbon steel material.

[0026] By connecting the flange interface 3 with the external conveying pipeline and aligning the mounting holes 4, the outer pipe 1 and other pipelines are connected to complete the material conveying.

[0027] The implementation principle of this embodiment is: after the outer tube 1 is connected to the external conveying pipeline, during the material conveying process, the material contacts the wear-resistant layer 2 and circulates, thereby reducing the friction during circulation. At the same time, the transparent block 6 can be observed to detect the distance between the calibration strip a7 and the calibration strip b8 to determine whether delamination of the wear-resistant layer 2 occurs during use.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite wear-resistant elbow pipe, comprising an outer pipe (1) and a wear-resistant layer (2) installed inside the outer pipe (1); Features: A transparent block (6) is fixedly connected to the outer wall of the upper end of the outer tube (1), a calibration strip a (7) is embedded in the inner part of the outer wall of the lower end of the transparent block (6), and a calibration strip b (8) is embedded in the inner part of the outer wall of the upper end of the wear-resistant layer (2).

2. The composite wear-resistant elbow according to claim 1, characterized in that: The circular outer wall of the outer tube (1) is sleeved with a heat-insulating layer (9), and the circular outer wall of the heat-insulating layer (9) is sleeved with a pressure-resistant outer shell (5).

3. The composite wear-resistant elbow according to claim 1, characterized in that: A space is reserved between the calibration strip a (7) and the calibration strip b (8), and the transparent block (6) is made of transparent acrylic material.

4. The composite wear-resistant elbow according to claim 2, characterized in that: A positioning opening (10) opening upward is provided between the pressure-resistant outer shell (5) and the heat-insulating layer (9) for bonding and fixing the transparent block (6) and the outer tube (1). The pressure-resistant outer shell (5) is made of stainless steel.

5. The composite wear-resistant elbow according to claim 4, characterized in that: The front end outer wall of the outer tube (1) is fixedly connected to a flange interface (3), and a plurality of mounting holes (4) are provided inside the front end outer wall of the flange interface (3).

6. The composite wear-resistant elbow according to claim 5, characterized in that: The flange interfaces (3) are provided with two, and the wear-resistant layer (2) is made of ceramic material.

7. The composite wear-resistant elbow according to claim 1, characterized in that: The outer tube (1) and the wear-resistant layer (2) are fixedly connected by gluing, and the outer tube (1) is made of carbon steel.

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