CN110131508A - A socket-embedded self-fixing steel-plastic composite full-swing drag tube - Google Patents

Abstract

The invention discloses a socket-embedded self-fixing steel-plastic composite full-swing pull pipe, comprising: a steel pipe, the two ends of the steel pipe have a socket section and a socket section, and the socket section of each adjacent previous steel pipe is inserted to the rear In the socket section of a steel pipe; the limit ring, the limit ring is fixed on the socket section; the connector and the elastic ring, one end of the connector is clamped on the socket section, and the other end of the connector and the limit steel ring An elastic ring is embedded to fasten the socket section and the socket section; a sealing rubber ring is embedded in the gap between the socket section and the socket section. The invention provides a socket-embedded self-fixing steel-plastic composite omni-swing pulling pipe, which has a large pulling force and a long pulling distance, and is suitable for 360° omni-directional swing and a large swing angle.

Description

A socket-embedded self-fixing steel-plastic composite full-swing drag tube

technical field

The invention relates to the construction field of non-excavation pipelines with diameters, in particular to a socket-embedded self-fixing steel-plastic composite omnidirectional pull pipe.

Background technique

It is more and more difficult to lay DN80-DN1000 underground pipelines across urban roads, highways, railways, lakes and rivers. The emergence of directional drilling and dragging construction method avoids the excavation of roads and damage to other underground pipelines, and at the same time reduces the impact on traffic and environment during the construction of underground pipelines.

The directional drilling and dragging construction method is adopted, and the directional drilling trajectory is a three-dimensional "serpentine" parabolic shape. The length of the dragging pipe in the directional drilling and dragging construction method ranges from tens of meters to thousands of meters. During the production process of the dragging pipe, due to the requirements of storage and transportation, the dragging pipe needs to be cut into sections. During construction, the short section of pipe needs to be connected into A long tube that meets the requirements and has the physical properties of being able to bend, while the existing drag tube generally uses a flexible HDPE plastic tube or a welded steel pipe that sacrifices the length to obtain the curvature. However, when the plastic material drag tube is dragged for too long , due to the shortcomings of insufficient tensile strength, insufficient surface hardness, and easy adulteration of plastic materials, it is easy to cause quality hazards such as dragged pipes being broken, caliber deformation, and severe scratches on the outer wall of the pipe. The hot-melt welding interface process is complex and tedious. Harsh, etc., while welded steel pipes are generally connected by five-oil three-cloth external anti-corrosion and interface welding process. When used to drag the pipe, the length is sacrificed to obtain the curvature and a large waste of materials increases the cost. Dragging and scraping the five-oil three-cloth in the hole cannot meet the anti-corrosion requirements and affect the service life of the pipeline, and the welding process is complicated and tedious and has high requirements.

Contents of the invention

In order to solve the above technical problems, the present invention provides a socket-embedded self-fixing steel-plastic composite full-swing pull pipe.

The technical solution of the present invention is: a socket-embedded self-fixing steel-plastic composite full-swing drag tube, comprising:

A steel pipe, the two ends of the steel pipe have a socket section and a socket section, and each adjacent socket section of the previous steel pipe is inserted into the socket section of the next steel pipe;

A limit ring, the limit ring is fixed on the socket section;

A connecting piece and an elastic ring, one end of the connecting piece is clamped on the socket section, and an elastic ring is embedded between the other end of the connecting piece and the limit steel ring, so as to securely connect the socket section and the socket section;

A sealing rubber ring, the sealing rubber ring is embedded in the gap between the socket section and the socket section.

Preferably, grooves are formed on the socket section.

Preferably, the connecting piece is a self-fixing mechanism, and both ends of the self-fixing mechanism have convex edges.

Preferably, the convex edge at one end of the self-fixing mechanism fits into the groove, and the convex edge at the other end clamps the elastic ring.

Preferably, the limit ring is a limit steel ring, and the limit steel ring is fixed on the socket section.

Preferably, the limiting ring is an integrally formed limiting arc segment of the socket segment.

Preferably, the elastic ring is a self-locking spring ring.

Preferably, the self-locking spring coil is a self-locking C-shaped coil.

Preferably, the steel pipe is provided with an anti-corrosion and anti-scratch layer; the anti-corrosion and anti-scratch layer is a high-density polyethylene layer.

Preferably, the contact between the elastic ring and the limit steel ring is point contact.

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

(1) The pulling force is large, and the pulling pipe can bear a force of 150KN to 8000KN according to the size of the caliber without decoupling. Axial thrust = cross-sectional area * pressure;

(2) The swing angle is large. Due to the self-fixing interface, the socket section and the socket section of the drag tube that are in point contact can achieve a swing angle of 4-16° when dragging;

(3) It can swing 360° in all directions, adapting to the three-dimensional "serpentine" parabolic swing;

(4) Made to order, each can be made according to the construction situation of 0.5 meters to 12 meters in length;

(5) The crossing distance is long, and the dragging length of the inlet and outlet can reach one kilometer;

(6) T-type sliding socket connection, the pipe can withstand water pressure of 10Mpa;

(7) There is no need for external power supply and connection equipment when the drag tube is installed and connected;

(8) The outer wall of the pipe is wrapped with epoxy resin + adhesive + HDPE wrapping tape, or wrapped with high-strength concrete to ensure the safety and reliability of external anti-corrosion;

(9) For internal anti-corrosion, epoxy resin, HDPE, concrete, stainless steel and other anti-corrosion materials can be used according to the difference of the conveying fluid;

(10) The wall thickness of the contact protrusion between the self-fixing structure and the elastic self-locking steel ring is greater than that of the tube body. Experiments have proved that the tube body cracks (broken) under the ultimate axial pullout force without damage to the self-fixing interface, "no decoupling".

Description of drawings

FIG. 1 is a schematic structural view of Embodiment 1 and Embodiment 2.

FIG. 2 is a schematic structural diagram of Embodiment 3. FIG.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

In the downtown area with dense urban buildings, such as high-rise buildings, when the traditional pipeline laying method cannot be used to directly excavate the road surface and then lay the pipeline, the steel-plastic composite full-swing drag pipe can be used to conveniently carry out the laying construction of underground pipelines Operation.

In the actual operation of pulling pipe construction, since the drill pipe and the product pipe to be pulled have a certain rigidity, the trajectory of the product pipe to be pulled from the ground to the ground and the exit of the drill pipe is a smooth arc. Therefore, the set drill The incoming line is an arc.

As shown in Figure 1, a socket-embedded self-fixing steel-plastic composite full-swing pull pipe, including steel pipe 1, limit steel ring 2, self-fixing mechanism 3, self-locking C-shaped spring ring 4 and sealant Circle 5.

Both ends of the steel pipe 1 have socket sections and socket sections, and each adjacent socket section of the previous steel pipe is inserted into the socket section of the next steel pipe.

A limit steel ring 2 is provided on the socket section. A groove 6 is provided on the socket section.

When the socket section of each adjacent previous steel pipe is inserted into the socket section of the next steel pipe, the convex edge at one end of the self-fixing mechanism 3 is matched and snapped into the groove 6, and the convex edge at the other end of the self-fixing mechanism 3 A self-locking C-shaped spring ring 4 is embedded between the limit steel ring 2 . Among them, the contact between the elastic ring and the limit steel ring is a point contact, because it can realize a large swing angle, and the convex edge of the self-fixing mechanism clamps the elastic ring, and the socket section and the socket section can be fastened due to the elastic tension. connect them.

A sealing rubber ring 5 is embedded in the gap between the socket section and the socket section.

The steel pipe 1 is provided with a high-density polyethylene layer 7, which is anti-corrosion and anti-scratch.

The specifications of the short section steel pipes of the drag pipe can be 0.5m/branch, 1m/branch, 2m/branch, 3m/branch, 4m/branch, 6m/branch, 12m/branch, etc.

Steel-plastic composite full-swing drag tube, axial thrust = cross-sectional area * pressure, such as 800 caliber drag tube, pressure 5.0MPa (50 kg), wall thickness 1.2cm, axial thrust = (82/2) ² 3.14* 50 = 263.917 tons; 1 ton = 9.8 kilonewtons (KN); 263.917*9.8 = 2586KN

Because it is proved that the pipe can bear a large load, and the load can reach 150KN to 8000KN without decoupling.

The comparison table of performance parameters between DN800 HDPE drag tube and steel-plastic composite omnidirectional drag tube on the market is as follows

Example 2

When the pipeline to be buried needs to pass through the mountains, and it is difficult to directly excavate the road surface to lay the pipeline by using the traditional pipeline laying method, the steel-plastic composite omni-swing drag pipe can be used to conveniently carry out the laying work of the underground pipeline.

In the actual operation of pulling pipe construction, since the drill pipe and the product pipe to be pulled have a certain rigidity, the trajectory of the product pipe to be pulled from the ground to the ground and the exit of the drill pipe is a smooth arc. Therefore, the set drill The incoming line is an arc.

As shown in Figure 1, a socket-embedded self-fixing steel-plastic composite full-swing pull pipe, including steel pipe 1, limit steel ring 2, self-fixing mechanism 3, self-locking C-shaped spring ring 4 and sealant Circle 5.

Both ends of the steel pipe 1 have socket sections and socket sections, and each adjacent socket section of the previous steel pipe is inserted into the socket section of the next steel pipe.

A limit steel ring 2 is provided on the socket section. A groove 6 is provided on the socket section.

When the socket section of each adjacent previous steel pipe is inserted into the socket section of the next steel pipe, the convex edge at one end of the self-fixing mechanism 3 is matched and snapped into the groove 6, and the convex edge at the other end of the self-fixing mechanism 3 A self-locking C-shaped spring ring 4 is embedded between the limit steel ring 2 . Among them, the contact between the elastic ring and the limit steel ring is a point contact, because it can realize a large swing angle, and the convex edge of the self-fixing mechanism clamps the elastic ring, and the socket section and the socket section can be fastened due to the elastic tension. connect them.

A sealing rubber ring 5 is embedded in the gap between the socket section and the socket section.

The steel pipe 1 is provided with a high-density polyethylene layer 7, which is anti-corrosion and anti-scratch.

The specifications of the short section steel pipes of the drag pipe can be 0.5m/branch, 1m/branch, 2m/branch, 3m/branch, 4m/branch, 6m/branch, 12m/branch, etc.

Steel-plastic composite full-swing drag tube, axial thrust = cross-sectional area * pressure, such as 800 caliber drag tube, pressure 5.0MPa (50 kg), wall thickness 1.2cm, axial thrust = (82/2) ² 3.14* 50 = 263.917 tons; 1 ton = 9.8 kilonewtons (KN); 263.917*9.8 = 2586KN

Because it is proved that the pipe can bear a large load, and the load can reach 150KN to 8000KN without decoupling.

The comparison table of performance parameters between DN800 HDPE drag tube and steel-plastic composite omnidirectional drag tube on the market is as follows

Example 3

When the pipelines to be buried need to pass through lakes and rivers, and the traditional pipeline laying method cannot be used to directly excavate the road surface and then lay the pipelines, the steel-plastic composite omni-directional drag pipe can be used to conveniently carry out the laying construction of underground pipelines Operation.

In the actual operation of pulling pipe construction, since the drill pipe and the product pipe to be pulled have a certain rigidity, the trajectory of the product pipe to be pulled from the ground to the ground and the exit of the drill pipe is a smooth arc. Therefore, the set drill The incoming line is an arc.

As shown in FIG. 2 , a socket-embedded self-fixing steel-plastic composite omni-directional drag tube includes a steel pipe 1 , a self-fixing mechanism 3 , a self-locking C-shaped spring ring 4 and a sealing rubber ring 5 .

Both ends of the steel pipe 1 have socket sections and socket sections, and each adjacent socket section of the previous steel pipe is inserted into the socket section of the next steel pipe.

The limiting arc section 2 is integrally formed on the socket section. A groove 6 is provided on the socket section.

When the socket section of each adjacent previous steel pipe is inserted into the socket section of the next steel pipe, the convex edge at one end of the self-fixing mechanism 3 is matched and snapped into the groove 6, and the convex edge at the other end of the self-fixing mechanism 3 A self-locking C-shaped spring coil 4 is embedded between the limiting arc section 2 . Among them, the contact between the elastic ring and the limiting arc is point contact, because it can realize a large swing angle, and the convex edge of the self-fixing mechanism clamps the elastic ring, and the socket section and the socket section can be fastened due to the elastic tension. connect them.

A sealing rubber ring 5 is embedded in the gap between the socket section and the socket section.

The steel pipe 1 is provided with a high-density polyethylene layer 7, which is anti-corrosion and anti-scratch.

The specifications of the short section steel pipes of the drag pipe can be 0.5m/branch, 1m/branch, 2m/branch, 3m/branch, 4m/branch, 6m/branch, 12m/branch, etc.

Steel-plastic composite full-swing drag tube, axial thrust = cross-sectional area * pressure, such as 800 caliber drag tube, pressure 5.0MPa (50 kg), wall thickness 1.2cm, axial thrust = (82/2) ² 3.14* 50 = 263.917 tons; 1 ton = 9.8 kilonewtons (KN); 263.917*9.8 = 2586KN

Because it is proved that the pipe can bear a large load, and the load can reach 150KN to 8000KN without decoupling.

The comparison table of performance parameters between DN800 HDPE drag tube and steel-plastic composite omnidirectional drag tube on the market is as follows

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot limit the scope of rights of the present invention with this. Therefore, modifications, equivalent changes, improvements, etc. made according to the scope of the patent application for the present invention still belong to the scope covered by the present invention .

Claims (10)

1. A socket-embedded self-fixing steel-plastic composite full-swing drag tube, characterized in that it includes: A steel pipe, the two ends of the steel pipe have a socket section and a socket section, and each adjacent socket section of the previous steel pipe is inserted into the socket section of the next steel pipe; A limit ring, the limit ring is arranged on the socket section; A connecting piece and an elastic ring, one end of the connecting piece is clamped on the socket section, and an elastic ring is embedded between the other end of the connecting piece and the limit steel ring, so as to securely connect the socket section and the socket section; A sealing rubber ring, the sealing rubber ring is embedded in the gap between the socket section and the socket section. 2. A socket-embedded self-fixing steel-plastic composite omni-directional pull pipe according to claim 1, characterized in that grooves are opened on the socket section. 3. A socket-embedded self-fixing steel-plastic composite full-swing pull pipe according to claim 2, characterized in that the connector is a self-fixing mechanism, and the two ends of the self-fixing mechanism have convex shape edge. 4. A socket-embedded self-fixing steel-plastic composite full-swing pull pipe according to claim 3, characterized in that the convex edge at one end of the self-fixing mechanism is matched and snapped into the groove, and the other The convex edge at one end clamps the elastic ring. 5. A socket-embedded self-fixing steel-plastic composite omni-directional drag tube according to any one of claims 1-4, characterized in that, the limit ring is a limit steel ring, and the limit steel The ring is fixed on the socket section. 6. A socket-embedded self-fixing steel-plastic composite full-swing pull tube according to any one of claims 1-4, characterized in that, the limit ring is a limit arc integrally formed by the socket section part. 7. A socket-embedded self-fixing steel-plastic composite omni-directional pulling tube according to any one of claims 1-4, characterized in that the elastic ring is a self-locking spring ring. 8. A socket-embedded self-fixing steel-plastic composite omni-directional pull tube according to any one of claims 1-4, characterized in that the self-locking coil is a self-locking C-shaped coil. 9. A socket-embedded self-fixing steel-plastic composite full-swing pull pipe according to claim 1, characterized in that, the steel pipe is provided with an anti-corrosion and anti-scratch layer; the anti-corrosion and anti-scratch layer is high density polyethylene layer. 10. A socket-embedded self-fixing steel-plastic composite omni-directional pull tube according to claim 1, characterized in that the contact between the elastic ring and the limit steel ring is a point contact.