CN216540550U - Hydraulic drive's compound pipeline preparation facilities of mechanical type - Google Patents

Abstract

The utility model discloses a hydraulic-driven mechanical composite pipeline preparation device, which comprises a main shell, a central shaft and a roller assembly, wherein the main shell is provided with a central shaft; the central shaft and the main shell form a revolute pair; two roller assemblies are assembled on two sides of the main shell; the roller assembly comprises a roller, a roller bracket, a piston rod, a roller shaft and a bearing; the piston rod is fixed on the roller bracket and forms a sliding pair with the chute of the main shell; two ends of the roller shaft are supported at two ends of the roller bracket through two bearings; the roller is fixed on the roller shaft. According to the utility model, oil is injected into the main shell, so that the oil moves on the spiral line groove in the main shell to drive the main shell to rotate, and forward thrust is applied through the driving device, so that the roller assembly extrudes the inner wall of the lining pipe in the process of forward spiral, and the preparation of the composite pipeline is gradually completed; the utility model has simple structure, reliable work, relatively low cost and higher efficiency and stability in preparing the composite pipeline.

Description

A hydraulically driven mechanical composite pipeline preparation device

technical field

The utility model belongs to the field of pipeline production, in particular to a hydraulically driven mechanical composite pipeline preparation device.

Background technique

With the increasing use of energy in the world, the exploitation and transportation of oil and gas has become an important link, and the composite pipeline plays a vital role in the process of exploitation and transportation of oil and gas, which has the advantages of low transportation cost, large transportation volume and energy consumption. It has the advantages of small size, safety and reliability, and low loss, so it is widely used.

In the prior art, the composite pipeline is prepared and processed in two ways. The first way is to use the mechanical structure to expand the lined pipe for preparation; The gap between the two pipes is then expanded through the mechanical structure to realize the composite of the two pipes; the second method is to connect the corrosion-resistant alloy and the carbon steel pipe to prepare by metallurgy; the mechanism is: through the surfacing or hot rolling process The metallurgical combination of corrosion-resistant materials and steel; the metallurgical composite pipeline prepared by metallurgical method has stronger bonding force between the two layers of metal materials, but the metallurgical process cost is high and the preparation process is complicated. The preferred choice in the project; the pipeline prepared by mechanical structure not only has good mechanical properties and corrosion resistance, but also has relatively low production cost.

At present, the composite pipeline is prepared by mechanical structure, and most of the methods are used to fix the outer mold and expand the inner mold; therefore, the structure of the inner mold is the key point for the preparation of the composite pipe; the current inner mold is mostly integral, and it is easy to prepare the composite pipe. There are problems such as uneven stress on the pipeline or damage to the lining pipe structure. In view of the above problems, it is urgent to propose and develop a mechanical device that can realize continuous operation, and the operation process is stable and efficient to realize the preparation of composite pipelines.

SUMMARY OF THE INVENTION

Aiming at the problems that the conventional inner mold is prone to uneven stress on the pipeline or damage to the lining pipe structure during the process of preparing the composite pipeline, the utility model proposes a hydraulically driven mechanical composite pipeline preparation device. When the pipeline is in the pipeline, the force uniformity of the pipeline is greatly improved, and the damage to the internal structure of the pipeline is reduced.

The utility model relates to a hydraulically driven mechanical composite pipeline preparation device, comprising a main casing, an end cover, a central shaft and a roller assembly; the central shaft and the main casing form a rotating pair; the two end caps are fixed at the center Both ends of the shaft, the space between the central shaft, the two end caps and the main casing is a hydraulic chamber; one end cap is provided with a liquid inlet, the other end cap is provided with a liquid outlet, the liquid inlet and outlet The liquid ports are all communicated with the hydraulic chamber; the two roller assemblies are assembled on both sides of the main casing, and the included angle between the two roller assemblies along the circumferential direction of the central axis is 180°; the inner wall of the main casing is provided with an integrated A plurality of helical grooves formed and uniformly distributed along the circumferential direction.

The roller assembly includes a roller, a roller support, a piston rod, a roller shaft and a bearing; the piston rod is fixed on the roller support; both ends of the roller shaft are supported on the roller by two bearings. The rollers are fixed on the roller shafts; the piston rods of the two roller assemblies and the sliding grooves opened on both sides of the main casing respectively form sliding pairs, and the inner end of the sliding grooves of the main casing is connected to the hydraulic pressure cavity communication.

Preferably, an axial retaining ring is installed between the bearing and the roller bracket.

Preferably, the cross section of the helical groove is semicircular.

Preferably, a liquid sealing ring is provided between the main casing and the end cover.

Preferably, the four threaded holes opened on each end face of the central shaft and the four through holes opened corresponding to one end cover are respectively fixedly connected by bolts.

Preferably, both the liquid inlet and the liquid outlet are connected with a hydraulic device.

More preferably, the hydraulic device includes a pump and an oil tank, the output port of the pump is communicated with the liquid inlet port, and the oil tank is communicated with the liquid outlet port; and a pressure regulator valve is also provided between the output port of the pump and the liquid inlet port.

Preferably, both ends of the side surface of the roller are tapered surfaces with a taper of 1:4.

Preferably, a hemispherical groove is formed on the end face of the piston rod connected with the chute.

Preferably, the end of the piston rod connected with the chute is provided with an integrally formed limit ring, and the limit ring is limited by the outer end of the chute of the main housing.

The beneficial effects of the present utility model are:

1. The utility model injects oil into the main casing through the hydraulic device, drives the telescopic rods in the two roller assemblies to extend, and drives the main casing through the movement of the oil on the spiral groove inside the main casing Rotate to realize the rotational motion of the two roller assemblies, and then apply a forward thrust to the end cover with the liquid inlet through the driving device, so that the main casing moves forward, and finally realizes the roller assembly in the process of spiral advancement. The inner wall of the liner is extruded to gradually complete the preparation of the composite pipe; the utility model has a simple structure, reliable operation and relatively low cost, and the spiral extrusion can prevent the composite pipe from being excessively deformed at one time during the extrusion process. The buckling or crushing of the pipe wall makes the preparation process of the composite pipe more efficient and stable.

2. The two ends of the roller in the utility model adopt a tapered design, so that the inner liner tube and the carbon steel pipe can be uniformly deformed and contacted from small to large, which further improves the uniformity of the force during the extrusion process of the liner tube. The structural damage to the lining pipe is reduced, and the continuous long-term operation inside the pipe can be realized.

Description of drawings

Fig. 1 is the assembly schematic diagram of the present utility model;

Fig. 2 is the assembly schematic diagram of the main casing and two roller assemblies in the present invention;

Fig. 3 is the structural representation of the roller assembly in the present invention;

Fig. 4 is the structural perspective view of the roller assembly in the present invention;

Figure 5 is a schematic diagram of the working principle of the present invention.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a hydraulically driven mechanical composite pipeline preparation device includes a main casing 1, an end cover 2, a central shaft 4 and a roller assembly 6; the central shaft 4 and the main casing 1 constitute a rotating pair ; Two end caps 2 are fixed at both ends of the central shaft 4, and the space between the central shaft 4, the two end caps 2 and the main casing 1 is a hydraulic chamber; one end cap 2 is provided with a liquid inlet, the other The end cover 2 is provided with a liquid outlet, and both the liquid inlet and the liquid outlet are communicated with the hydraulic chamber; the two roller assemblies 6 are assembled on both sides of the main casing 1, and the two roller assemblies 6 are along the central axis 4. The included angle in the circumferential direction is 180°; the inner wall of the main casing 1 is provided with a plurality of helical grooves that are integrally formed and evenly distributed along the circumferential direction; the function of the helical grooves is to hydraulically drive the main casing to rotate, so as to realize two rollers The rotational movement of the assembly 6 causes the roller assembly 6 to squeeze the inner wall of the liner pipe 9 during the spiral advance process, which improves the uniformity of the force on the liner pipe 9 .

As shown in Figures 3 and 4, the roller assembly 6 includes a roller 6-1, a roller bracket 6-3, a piston rod 6-4, a roller shaft 6-5 and a bearing 6-6; the piston rod 6-4 is fixed On the roller bracket 6-3; both ends of the roller shaft 6-5 are supported on both ends of the roller bracket through two bearings 6-6; the roller 6-1 is fixed on the roller shaft 6-5; two The piston rods 6-4 of the roller assembly 6 and the sliding grooves opened on both sides of the main casing 1 respectively constitute sliding pairs, and the inner end of the sliding grooves of the main casing 1 is communicated with the hydraulic chamber, so that the roller assembly 6 can be driven by hydraulic pressure. Stable pressing force is applied to the inner wall of the liner tube 9 .

As a preferred embodiment, an axial retaining ring 6-2 is installed between the bearing 6-6 and the roller bracket 6-3 to perform axial positioning of the bearing 6-6.

As a preferred embodiment, as shown in FIG. 2 , the cross section of the helical groove is semicircular to reduce energy loss.

As a preferred embodiment, a liquid sealing ring 5 is provided between the main casing 1 and the end cover 2 to prevent liquid from leaking out of the main casing 1 .

As a preferred embodiment, the four threaded holes opened on each end face of the central shaft 4 and the four through holes opened corresponding to one end cover 2 are respectively fixedly connected by bolts 3 .

As a preferred embodiment, both the liquid inlet and the liquid outlet are connected with the hydraulic device.

As a more preferred embodiment, the hydraulic device includes a pump and an oil tank, the output port of the pump is communicated with the liquid inlet port, and the oil tank is communicated with the liquid outlet port;

As a preferred embodiment, both ends of the side surface of the roller 6-1 are tapered surfaces with a taper of 1:4. The tapered surfaces can gradually compress the lining pipe 9 and gradually expand the inner diameter of the composite pipe, thereby The force uniformity during the extrusion process of the composite pipe is further improved; and both sides of the roller 6-1 are provided with tapered surfaces to facilitate assembly, and when the tapered surface at one end is damaged, it can be replaced with the other end to continue operation, saving energy cost.

As a preferred embodiment, as shown in FIG. 3 , the end face of the piston rod 6-4 connected with the chute is provided with a hemispherical groove, which is more conducive to the smooth driving of hydraulic pressure, so as to exert a more stable pressure on the inner wall of the lining pipe 9. pressing force.

As a preferred embodiment, the end of the piston rod 6-4 connected to the chute is provided with an integrally formed limit ring, and the limit ring is limited by the outer end of the chute of the main housing 1, thereby limiting the movement of the piston rod 6-4. Maximum reach.

The working principle of the present utility model is as follows:

The utility model is placed inside the lining pipe 9; the hydraulic device is activated, and the oil enters the main casing 1 from the liquid inlet of the end cover 2. As shown in Figure 5, two rollers are driven by the oil pressure. The piston rods 6-4 of the assembly 6 protrude radially along the central axis synchronously, and the rollers 6-1 of the two roller assemblies 6 abut on the inner lining pipe 9, so that the inner lining pipe 9 and the carbon steel pipe 8 are deformed, Until the carbon steel pipe 8 touches the outer mold 7 for shaping the pipe; while the piston rod 6-4 is radially fed, the oil drives the main casing to rotate through the helical groove, so as to realize the rotational motion of the two roller assemblies 6, and then In addition, through the driving device (a device that can provide the driving trolley and other devices that can provide axial forward power along the composite pipeline), a forward thrust is applied to the end cover 2 with the liquid inlet, so that the main casing 1 moves forward, and finally the roller assembly 6. The inner wall of the lining pipe 9 is extruded during the spiral advance, which improves the uniformity of the force of the lining pipe 9, and gradually realizes the preparation of the composite pipe, preventing the composite pipe from buckling or crushing due to one-time excessive deformation. Moreover, the tapered surface of the roller 6-1 enables the composite pipe to be deformed and contacted uniformly from small to large, which further improves the uniformity of the force applied to the lining pipe 9 during the extrusion process.

Claims (10)

1. The utility model provides a hydraulic drive's compound pipeline preparation facilities of mechanical type, includes main casing body, end cover and center shaft, its characterized in that: also includes a roller assembly; the central shaft and the main shell form a revolute pair; the two end covers are fixed at two ends of the central shaft, and the space among the central shaft, the two end covers and the main shell is a hydraulic cavity; one end cover is provided with a liquid inlet, the other end cover is provided with a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the hydraulic cavity; the two roller assemblies are assembled on two sides of the main shell, and the included angle of the two roller assemblies along the circumferential direction of the central shaft is 180 degrees; the inner wall of the main shell is provided with a plurality of spiral wire grooves which are integrally formed and are uniformly distributed along the circumferential direction;

the roller assembly comprises a roller, a roller bracket, a piston rod, a roller shaft and a bearing; the piston rod is fixed on the roller bracket; two ends of the roller shaft are supported at two ends of the roller bracket through two bearings; the roller is fixed on the roller shaft; piston rods of the two roller assemblies and sliding grooves formed in two sides of the main shell body respectively form sliding pairs, and the inner ends of the sliding grooves of the main shell body are communicated with the hydraulic cavity.

2. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: and an axial retainer ring is arranged between the bearing and the roller bracket.

3. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: the cross section of the spiral line groove is semicircular.

4. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: a liquid sealing ring is arranged between the main shell and the end cover.

5. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: and four threaded holes formed in each end face of the central shaft are fixedly connected with four through holes formed in one corresponding end cover through bolts respectively.

6. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: the liquid inlet and the liquid outlet are both connected with a hydraulic device.

7. The hydraulically driven mechanical compound pipeline preparation device of claim 6, wherein: the hydraulic device comprises a pump and an oil tank, wherein the output port of the pump is communicated with the liquid inlet, and the oil tank is communicated with the liquid outlet; and a pressure stabilizing valve is arranged between the output port and the liquid inlet of the pump.

8. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: the two ends of the side surface of the roller are both tapered as 1: 4, 4.

9. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: and a hemispherical groove is formed in the end face of one end, connected with the sliding groove, of the piston rod.

10. The hydraulically driven mechanical composite pipe preparation device of claim 1, wherein: and one end of the piston rod connected with the sliding groove is provided with an integrally formed limiting ring, and the limiting ring is limited by the outer end of the sliding groove of the main shell.

Images