Self-lubricating corrugated protective casing pipe

Abstract

The utility model relates to the technical field of protective casing pipes, and discloses a self-lubricating corrugated protective casing pipe which comprises a lubricating layer and a main body layer which are sequentially arranged from inside to outside, the lubricating layer and the main body layer are both of a circular pipe structure, the outer wall of the lubricating layer is attached to the inner wall of the main body layer, and the thickness of the lubricating layer accounts for 5%-15% of the total thickness of the lubricating layer and the main body layer. The utility model has the beneficial effects that the double-layer structure form that the lubricating layer is matched with the main body layer is adopted, and the thickness of the lubricating layer positioned on the inner layer is controlled between 5% and 15% of the total thickness, so that the thickness of the lubricating layer with higher cost can be controlled to further control the cost, and the friction coefficient of the inner surface of the pipe can be reduced; the self-lubricating performance of the inner surface of the pipe is improved, and later sleeve construction is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of protective sleeves, in particular to a self-lubricating corrugated protective sleeve. Background Art

[0002] Corrugated protective sleeves are mainly used as cable sheaths and pipe sheaths. Their unique corrugated structure gives the pipes a relatively high ring stiffness and enables them to withstand external pressure and deformation. The current production methods of corrugated pipes mostly adopt extrusion and forming with corrugated molds. There are inevitably problems such as parting lines and inner wall defects on the inner wall of the pipes. The above problems will cause inconvenience in threading and tubing, and may also scratch the wires and pipes. The common method is to apply lubricants on the wires and pipes, which is cumbersome and time-consuming in construction. Content of the Utility Model

[0003] The purpose of this application is to provide a self-lubricating corrugated protective sleeve to improve the effect of threading and tubing and prevent damage to the wire pipes.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A self-lubricating corrugated protective sleeve includes a lubricating layer and a main body layer arranged in sequence from inside to outside. Both the lubricating layer and the main body layer are in a circular tube structure. The outer wall of the lubricating layer is attached to the inner wall of the main body layer. Among them, the thickness of the lubricating layer accounts for 5%-15% of the total thickness of the lubricating layer and the main body layer.

[0006] In some embodiments of this application, the thickness of the lubricating layer is at least 0.1 mm.

[0007] In some embodiments of this application, the total thickness of the lubricating layer and the main body layer is 0.7 mm - 1.6 mm.

[0008] In some embodiments of this application, the lubricating layer is a modified high molecular material silicon core layer.

[0009] In some embodiments of this application, the lubricating layer is a modified PE silicon core layer.

[0010] In some embodiments of this application, the lubricating layer is a modified PP silicon core layer.

[0011] In some embodiments of this application, the main body layer is a high molecular material layer.

[0012] In some embodiments of this application, the main body layer is a PE layer.

[0013] In some embodiments of this application, the main body layer is a PP layer.

[0014] The self-lubricating corrugated casing of the present application adopts a double-layer structure form of a lubricating layer combined with a main body layer. The thickness of the lubricating layer located on the inner layer is controlled between 5% and 15% of the total thickness. This can not only control the thickness of the lubricating layer with relatively high cost and thus control the cost, but also reduce the friction coefficient of the inner surface of the pipe, improve the self-lubricating performance of the inner surface of the pipe, and facilitate the later casing construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of the self-lubricating corrugated casing of the present application.

[0016] In the figure, 1 is the lubricating layer; 2 is the main body layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0018] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", etc. used in the present application to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] As Figure 1 shown, an embodiment of the present application provides a self-lubricating corrugated casing, including: a lubricating layer 1 and a main body layer 2 arranged in sequence from inside to outside. Both the lubricating layer 1 and the main body layer 2 are circular tube-shaped structures. The outer wall of the lubricating layer 1 is attached to the inner wall of the main body layer 2. Among them, the thickness of the lubricating layer 1 accounts for 5%-15% of the total thickness of the lubricating layer 1 and the main body layer 2.

[0021] Based on the above technical solution, the self-lubricating corrugated casing of the present application adopts a double-layer structure form of a lubricating layer 1 and a main body layer 2. The thickness of the lubricating layer 1 located on the inner layer is controlled between 5% and 15% of the total thickness. This can not only control the thickness of the relatively costly lubricating layer 1 and thus control the cost, but also reduce the friction coefficient of the inner surface of the pipe, improve the self-lubricating performance of the inner surface of the pipe, and facilitate the subsequent casing construction.

[0022] In some embodiments of the present application, as Figure 1 shown, the thickness of the lubricating layer 1 is at least 0.1 mm. Only when the thickness of the lubricating layer 1 is at least 0.1 mm can a long-term effective self-lubricating layer 1 be formed on the inner layer of the pipe, improving the lifespan of the pipe and reducing the risk of lubrication failure during installation.

[0023] In some embodiments of the present application, as Figure 1 shown, the total thickness of the lubricating layer 1 and the main body layer 2 is 0.7 mm - 1.6 mm. When the total thickness of the pipe is between 0.7 mm and 1.6 mm, pipes with a thickness less than 0.7 mm have poor reliability and are prone to problems such as cracking. Pipes with a thickness greater than 1.6 mm are too large in size, prone to interference, and the area for liquid flow is affected.

[0024] In some embodiments of the present application, as Figure 1 shown, the lubricating layer 1 is a modified polymer material silicon core layer. The modified polymer material silicon core lubricating layer 1 is formed by co-extruding a polymer substrate and a silica gel masterbatch (containing linear polydimethylsiloxane or dimethyl silicone oil, etc.) simultaneously, forming an inner wall with a permanent solid silicone grease lubricant (i.e., silicon core). It has good lubricating performance and a small friction coefficient, making it very suitable as the lubricating layer 1 on the inner wall of the pipe. Among them, the addition amount of the silica gel masterbatch is 0.5% - 3%. When 3% is added, the friction coefficient of the pipe can reach 0.05; when 0.5% is added, the friction coefficient of the pipe can reach 0.15.

[0025] Specifically, as Figure 1 shown, the lubricating layer 1 is a modified PE silicon core layer. PE is polyethylene, which is inexpensive and easy to obtain. By co-extruding polyethylene and a silica gel masterbatch, a modified PE silicon core lubricating layer 1 is formed, giving the inner wall of the pipe good lubricating performance.

[0026] Specifically, as Figure 1 shown, the lubricating layer 1 is a modified PP silicon core layer. PP is polypropylene, which is inexpensive and easy to obtain. By co-extruding polypropylene and a silica gel masterbatch, a modified PP silicon core lubricating layer 1 is formed, giving the inner wall of the pipe good lubricating performance.

[0027] In some embodiments of the present application, as Figure 1As shown, the main body layer 2 is a polymer material layer. The polymer material layer accounts for 85%-95% of the total thickness. The polymer material has low cost, is not easy to deteriorate or denature, and is easy to process, making it very suitable as the material of the main body layer 2.

[0028] Specifically, as Figure 1 shown, the main body layer 2 is a PE layer. PE is polyethylene, which is cheap, easy to obtain, odorless, non-toxic, feels like wax, and has excellent low-temperature resistance. It has good chemical stability, can resist the erosion of most acids and alkalis, is insoluble in common solvents at room temperature, has low water absorption, and excellent electrical insulation, making it a high-quality material choice for the main body layer 2 of the pipe.

[0029] Specifically, as Figure 1 shown, the main body layer 2 is a PP layer. PP is polypropylene, which is cheap and easy to obtain. It is a thermoplastic synthetic resin with excellent properties, a colorless and translucent thermoplastic lightweight general-purpose plastic, with chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, and good high-abrasion resistance processing properties, etc., making it a high-quality material choice for the main body layer 2 of the pipe.

[0030] In summary, the self-lubricating corrugated casing of the present application adopts a double-layer structure form of the lubricating layer 1 and the main body layer 2. The thickness of the lubricating layer 1 located in the inner layer is controlled between 5%-15% of the total thickness. It can not only control the thickness of the lubricating layer 1 with higher cost and thus control the cost, but also reduce the friction coefficient of the inner surface of the pipe, improve the self-lubricating performance of the inner surface of the pipe, and facilitate the later casing construction.

[0031] The above is only the preferred embodiment of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. A self-lubricating corrugated sheath tube, Characterized in that, Comprising: A lubricating layer and a main body layer arranged in sequence from inside to outside. Both the lubricating layer and the main body layer are in a circular tube structure. The outer wall of the lubricating layer is attached to the inner wall of the main body layer. Among them, the thickness of the lubricating layer accounts for 5%-15% of the total thickness of the lubricating layer and the main body layer; The thickness of the lubricating layer is at least 0.1 mm; The total thickness of the lubricating layer and the main body layer is 0.7 mm - 1.6 mm.

2. The self-lubricating corrugated sheath tube according to claim 1, Characterized in that, The lubricating layer is a modified polymer material silicon core layer.

3. The self-lubricating corrugated sheath tube according to claim 2, Characterized in that, The lubricating layer is a modified PE silicon core layer.

4. The self-lubricating corrugated sheath tube according to claim 2, Characterized in that, The lubricating layer is a modified PP silicon core layer.

5. The self-lubricating corrugated sheath tube according to claim 1, Characterized in that, The main body layer is a polymer material layer.

6. The self-lubricating corrugated sheath tube according to claim 5, Characterized in that, The main body layer is a PE layer.

7. The self-lubricating corrugated sheath tube according to claim 5, Characterized in that, The main body layer is a PP layer.

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