Modified polypropylene single-wall corrugated spiral cable protection pipe

Abstract

The modified polypropylene single-wall corrugated spiral cable protection pipe designed by the utility model adopts threaded connection, and compared with a single-wall corrugated pipe adopting welding connection, the inner wall of the joint is smooth, a cable is not easy to damage, and the cable penetration resistance is small; the buried cable protection pipe is small in inner diameter and adopts a spiral winding structure, so that the bearing capacity of a circular pipeline can be improved, and the buried cable protection pipe with a larger size is high in anti-pressure capability; the connector can be connected with a working well, the annular cylindrical water stop ring is arranged, the distance of underground water flowing into the cable protection pipe is increased, and therefore the water stop effect is achieved, and the device is suitable for airport engineering flying area navigational light engineering.

Description

Technical Field

[0001] The utility model relates to an electric power protection tube, in particular to a modified polypropylene single-wall corrugated spiral cable protection tube. Background Art

[0002] The inner diameter of the cable protection tube for airport flight zone navigation lights is 63mm, which requires a higher load-bearing capacity and a ring stiffness level greater than 40kPa. It is smaller than the size of the buried cable protection. If hot-melt welding is used, the inner diameter of the connection is prone to produce inward hot-melt residues, and the smoothness of the inner wall cannot be ensured. Due to its small size, it has a greater impact on cable threading. Modified polypropylene single-wall corrugated spiral tube is selected, and the spiral winding structure can improve the bearing capacity of the circular pipe; threaded connection is used at the connection, and it is waterproof and earthquake-resistant, suitable for airport engineering flight zone navigation lighting projects. Summary of the invention

[0003] The utility model aims to provide a modified polypropylene single-wall corrugated spiral cable protection tube, which adopts threaded connection, has high bearing capacity, is waterproof and shock-resistant, and is suitable for airport engineering flight zone navigation lighting engineering.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a modified polypropylene single-wall corrugated spiral cable protection tube, characterized in that: it comprises a single-wall corrugated spiral tube body 1, a connector 2;

[0005] The single-wall corrugated spiral pipe body 1 is a spirally wound structure of an annular cylinder, which is composed of a spiral corrugation 11 and an inner pipe 12. The spiral corrugation 11 is wound around the outer periphery of the inner pipe 12, and gaps 10 are formed between the connected spiral corrugations 11 on the outer periphery of the inner pipe 12.

[0006] The connector 2 is composed of an annular cylindrical water stop ring 21 and an inner winding spiral corrugated sleeve 22, and the inner winding spiral corrugated sleeve 22 is composed of an inner inserted spiral corrugation 221 and an outer sleeve 222, and the inner inserted spiral corrugation 221 is wound on the inner wall of the outer sleeve 222, and a groove 220 is formed on the inner wall of the outer sleeve 222 between the inner inserted spiral corrugations 221;

[0007] An outer diameter end of the annular cylindrical water stop ring 21 is connected to an inner diameter end of the inner winding spiral corrugated sleeve 22;

[0008] The spiral corrugation 11 can be closely fitted with the groove 220 formed on the inner wall of the outer sleeve 222 between the connected inner inserted spiral corrugations 221, and the outer wall of the annular cylindrical water stop ring 21 can be closely fitted with the inner wall reserved for the working well;

[0009] A connection method for a modified polypropylene single-wall corrugated spiral cable protection tube is a threaded connection; the spiral corrugations 11 of a single-wall corrugated spiral tube body 1 and the inner inserted spiral corrugations 221 at one end of an inner wound spiral corrugated sleeve 22 not connected to an annular cylindrical water stop ring 21 are wound on the inner wall of the outer sleeve 222 to form a groove 220 that fits tightly; the spiral corrugations 11 of another single-wall corrugated spiral tube body 1 and the inner inserted spiral corrugations 221 at the other end of an inner wound spiral corrugated sleeve 22 not connected to an annular cylindrical water stop ring 21 are wound on the inner wall of the outer sleeve 222 to form a groove 220 that fits tightly.

[0010] The advantages of the utility model are:

[0011] 1) A modified polypropylene single-wall corrugated spiral cable protection tube adopts threaded connection. Compared with the single-wall corrugated tube with welding connection, the inner wall of the connection is smooth, which is not easy to damage the cable and has small cable threading resistance;

[0012] 2) A modified polypropylene single-wall corrugated spiral cable protection tube has a small inner diameter and adopts a spiral winding structure, which can improve the bearing capacity of the circular pipe. The larger size of the buried cable protection tube has strong compressive resistance;

[0013] 3) A connector of a modified polypropylene single-wall corrugated spiral cable protection pipe can be connected to a working well, and an annular cylindrical water-stop ring is set to increase the distance that groundwater flows into the cable protection pipe, thereby achieving a water-stopping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is described in detail below with reference to the accompanying drawings:

[0015] Figure 1 This is a structural diagram of a single-wall corrugated spiral tube body 1 of a modified polypropylene single-wall corrugated spiral cable protection tube of the present invention;

[0016] Figure 2 It is a longitudinal cross-sectional view of the connector 2 of the modified polypropylene single-wall corrugated spiral cable protection tube of the present invention;

[0017] Figure 3 This is a structural diagram of the connection between the single-wall corrugated spiral tube body 1 and the connector 2 of a modified polypropylene single-wall corrugated spiral cable protection tube of the present invention;

[0018] Figure 4 The utility model is a schematic diagram of connecting a single-wall corrugated spiral tube body 1 and another single-wall corrugated spiral tube body 1 of a modified polypropylene single-wall corrugated spiral cable protection tube. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to specific embodiments and accompanying drawings:

[0020] A modified polypropylene single-wall corrugated spiral cable protection tube, characterized in that it comprises a single-wall corrugated spiral tube body 1 and a connector 2.

[0021] like Figure 1 As shown, the single-wall corrugated spiral tube body 1 is a spirally wound structure of an annular cylinder, consisting of a spiral corrugation 11 and an inner tube 12. The spiral corrugation 11 is wound around the outer periphery of the inner tube 12, and gaps 10 are formed between the connected spiral corrugations 11 on the outer periphery of the inner tube 12.

[0022] like Figure 2 As shown, the connector 2 is composed of an annular cylindrical water stop ring 21 and an inner winding spiral corrugated sleeve 22, and the inner winding spiral corrugated sleeve 22 is composed of an inner inserted spiral corrugation 221 and an outer sleeve 222, and the inner inserted spiral corrugation 221 is wound on the inner wall of the outer sleeve 222, and a groove 220 is formed on the inner wall of the outer sleeve 222 between the inner inserted spiral corrugations 221;

[0023] An outer diameter end of the annular cylindrical water stop ring 21 is connected to an inner diameter end of the inner wound spiral corrugated sleeve 22 .

[0024] like Figure 3 As shown, the spiral corrugation 11 can fit tightly with the groove 220 formed on the inner wall of the outer sleeve 222 between the connected inner inserted spiral corrugations 221, and the outer wall of the annular cylindrical water stop ring 21 can fit tightly with the inner wall of the reserved channel of the working well.

[0025] like Figure 4 As shown, a connection method of a modified polypropylene single-wall corrugated spiral cable protection tube is a threaded connection; the spiral corrugation 11 of a single-wall corrugated spiral tube body 1 and the inner inserted spiral corrugation 221 at one end of an inner wound spiral corrugated sleeve 22 not connected to an annular cylindrical water stop ring 21 are wound on the inner wall of the outer sleeve 222 to form a groove 220 that fits tightly, and the spiral corrugation 11 of another single-wall corrugated spiral tube body 1 and the inner inserted spiral corrugation 221 at the other end of an inner wound spiral corrugated sleeve 22 not connected to an annular cylindrical water stop ring 21 are wound on the inner wall of the outer sleeve 222 to form a groove 220 that fits tightly.

Claims

1. A modified polypropylene single-wall corrugated spiral cable protection tube, characterized in that: It comprises a single-wall corrugated spiral pipe body (1) and a connector (2); The single-wall corrugated spiral tube body (1) is a spirally wound structure of an annular cylinder, and is composed of a spiral corrugation (11) and an inner tube (12). The spiral corrugation (11) is wound around the outer periphery of the inner tube (12), and gaps (10) are formed between the spiral corrugations (11) on the outer periphery of the inner tube (12). The connector (2) is composed of an annular cylindrical water stop ring (21) and an inner winding spiral corrugated sleeve (22); the inner winding spiral corrugated sleeve (22) is composed of an inner inserted spiral corrugation (221) and an outer sleeve (222); the inner inserted spiral corrugation (221) is wound on the inner wall of the outer sleeve (222); and grooves (220) are formed on the inner wall of the outer sleeve (222) between the inner inserted spiral corrugations (221); An outer diameter end of the annular cylindrical water stop ring (21) is connected to an inner diameter end of the inner winding spiral corrugated sleeve (22); The spiral corrugation (11) can be closely fitted with the groove (220) formed on the inner wall of the outer sleeve (222) between the connected inner inserted spiral corrugations (221), and the outer wall of the annular cylindrical water stop ring (21) can be closely fitted with the inner wall reserved for the working well.

2. A modified polypropylene single-wall corrugated spiral cable protection tube according to claim 1, characterized in that: A modified polypropylene single-wall corrugated spiral cable protection tube is connected in a threaded manner; the spiral corrugations (11) of a single-wall corrugated spiral tube body (1) and the inner inserted spiral corrugations (221) at one end of an inner wound spiral corrugated sleeve (22) not connected to an annular cylindrical water stop ring (21) are wound on the inner wall of an outer sleeve (222) to form a groove (220) for close fitting, and the spiral corrugations (11) of another single-wall corrugated spiral tube body (1) and the inner inserted spiral corrugations (221) at the other end of the inner wound spiral corrugated sleeve (22) not connected to the annular cylindrical water stop ring (21) are wound on the inner wall of the outer sleeve (222) to form a groove (220) for close fitting.

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