CN215866207U

CN215866207U - Test bed for measuring fatigue of flexible pipe or hinged pipe

Info

Publication number: CN215866207U
Application number: CN202120421113.4U
Authority: CN
Inventors: 朱良
Original assignee: Xi'an Letry Testing Machines Co ltd
Current assignee: Xi'an Letry Testing Machines Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-02-18
Anticipated expiration: 2031-02-25

Abstract

The embodiment of the utility model provides a test bed for measuring fatigue of a flexible pipe or a hinged pipe, which comprises the test bed and also comprises: the flexible pipe clamp comprises a driving device, a flexible pipe clamp and a hinged pipe clamp; the driving device is used for driving the flexible pipe clamp to clamp the flexible pipe and testing the fatigue strength of the flexible pipe; the driving device is used for driving the hinged pipe clamp to clamp the hinged pipe, and the fatigue strength of the hinged pipe is tested. A driving device, a flexible pipe clamp and a hinged pipe clamp are arranged on the basis of the experiment table and used for measuring the fatigue strength of the flexible pipe or the hinged pipe; the utility model can measure flexible pipe and hinged pipe; therefore, the problem that two pieces of experimental equipment are needed for the existing flexible pipe and the existing hinged pipe for measurement is solved.

Description

Test bed for measuring fatigue of flexible pipe or hinged pipe

Technical Field

The utility model relates to the technical field of fatigue test beds, in particular to a test bed for measuring fatigue of a flexible pipe or a hinged pipe.

Background

With the continuous deepening of the field of ocean development, the development depth of the ocean flexible pipe is increased. In the early 60 s of the last century, marine flexible pipes were laid at a typical depth of 20 meters. By the beginning of the 21 st century, the water depth of the super-deep water area can reach 1500-3000 m.

Nowadays, the design and production technology of marine flexible pipes is mature, and the design and development are continuously carried out towards the direction of ultra-deep water. However, the flexible oil and gas pipelines used in offshore oil fields, especially deep-sea oil and gas fields, in China up to now mainly depend on foreign manufacturers, are expensive, and are difficult to repair in time once accidents occur in the using process of the flexible pipelines along with the prolonging of time.

Therefore, when the flexible pipe and the hinged pipe are manufactured, the fatigue resistance detection is very critical, the existing fatigue test bench independently tests one of the flexible pipe and the hinged pipe, and when the flexible pipe and the hinged pipe are measured, two test benches are needed, so that the time and labor are wasted, and the flexible pipe and the hinged pipe are very inconvenient.

Disclosure of Invention

The utility model provides a test bed for measuring fatigue of a flexible pipe or an articulated pipe, and aims to solve the problems that two test beds are needed when the flexible pipe and the articulated pipe are measured by the conventional fatigue test bed, time and labor are wasted, and inconvenience is caused. In order to achieve the purpose, the utility model adopts the following technical scheme:

a test bench for measuring fatigue of a flexible pipe or a hinged pipe comprises the test bench and further comprises:

the flexible pipe clamp comprises a driving device, a flexible pipe clamp and a hinged pipe clamp;

the driving device is used for driving the flexible pipe clamp to clamp the flexible pipe and testing the fatigue strength of the flexible pipe;

the driving device is used for driving the hinged pipe clamp to clamp the hinged pipe, and the fatigue strength of the hinged pipe is tested.

Further comprising: the device comprises a shell, a bottom plate and a mounting rack;

the driving device includes: the device comprises a winding and separating device, a bent template mechanism, a track plate, a steel wire rope, a flexible pipe clamp, a lifting platform, a driving mechanism, a fixed pulley and a U-shaped pipe hoop;

the shell and the driving mechanism are both arranged on the bottom plate; the mounting rack is arranged inside the shell; the winding and separating device and the track plate are arranged on the mounting frame, and the bent template mechanism is arranged on the track plate in a sliding manner; the lifting platform is arranged on the mounting frame in a sliding manner;

one end of the steel wire rope is rotatably arranged on the winding and separating device, the other end of the steel wire rope is fixedly connected to the lifting platform, the steel wire rope sequentially bypasses the fixed pulley and the bent template mechanism, and the driving mechanism is used for driving the winding and separating device to tighten or loosen the steel wire rope;

the U-shaped pipe hoop is arranged on the mounting rack and used for fixing a flexible pipe; the flexible pipe clamp is arranged on the lifting platform and used for clamping a flexible pipe;

the hinged pipe clamp includes: an upper articulated pipe clamp and a lower articulated pipe clamp; the upper hinged pipe clamp is arranged on the winding and separating device, and the lower hinged pipe clamp is arranged on the lifting platform; the hinged pipe is clamped between the upper hinged pipe clamp and the lower hinged pipe clamp.

Further, still include: the V-shaped cushion block is arranged at the bottom of the mounting rack and used for supporting the flexible pipe.

Further, the drive mechanism includes: servo motor and universal joint, servo motor sets up on the bottom plate, servo motor's axle head with universal joint's one end is coaxial to be set up, universal joint's the other end sets up on the rolling separator.

Further, the rolling separator includes: the steel wire rope winding and separating mechanism and the rotating mechanism are detachably arranged; when the flexible pipe is tested, the steel wire rope winding and separating mechanism is arranged separately from the rotating mechanism; when the hinged pipe is tested, the steel wire rope winding and separating mechanism is meshed with the rotating mechanism.

Further, the upper hinged pipe clamp is arranged on the rotating mechanism, and the lower hinged pipe clamp is detachably arranged on the lifting platform.

Further, the lifting platform is arranged on the side face of the mounting frame in a sliding mode, and the lifting platform is arranged on the mounting frame side face close to one side of the winding and separating device.

Furthermore, the number of the flexible pipe clamps is two, one flexible pipe clamp is detachably arranged on the lifting platform, and the other flexible pipe clamp is arranged on the other side face of the mounting frame in a sliding manner; and the other end of the steel wire rope is fixedly connected to the other flexible pipe clamp.

The support seat is arranged on the mounting frame; when articulated pipe experiment, the supporting seat is used for supporting articulated pipe.

Compared with the prior art, the utility model has the following advantages;

the utility model provides a test bed for measuring fatigue of a flexible pipe or a hinged pipe, which is characterized in that a driving device, a flexible pipe clamp and a hinged pipe clamp are arranged on the basis of the test bed and used for measuring the fatigue strength of the flexible pipe or the hinged pipe; the utility model can measure flexible pipe and hinged pipe; therefore, the problem that two pieces of experimental equipment are needed for the existing flexible pipe and the existing hinged pipe for measurement is solved.

In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions, and the advantageous effects brought by the technical features of the technical solutions described above, other technical problems that the present invention can solve, other technical features included in the technical solutions, and advantageous effects brought by the technical features will be described in further detail in the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic structural diagram of a test bed for measuring fatigue of a flexible pipe or a hinged pipe according to an embodiment of the present invention;

FIG. 2 is a front view of the partial connection of the wire rope take-up and separation mechanism and the rotation mechanism;

fig. 3 is a schematic view of a measuring articulated pipe.

Reference numerals:

1. a winding and separating device; 2. a bending template mechanism; 3. a track board; 4. a wire rope; 5. a flexible pipe clamp; 6. a flexible tube; 7. a U-shaped pipe hoop; 8. a V-shaped cushion block; 9. a supporting seat; 10. A lifting platform; 11. a drive mechanism; 12. a universal coupling; 13. a fixed pulley; 14. a housing; 15. a base plate; 16. a mounting frame; 17. an upper articulated pipe clamp; 18. a lower articulated pipe clamp; 19. the tube is hinged.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, and table 1, an embodiment of the present invention provides a test stand for measuring fatigue of a flexible pipe or an articulated pipe, including: the device comprises a winding and separating device 1, a bent template mechanism 2, a track plate 3, a steel wire rope 4, a flexible pipe clamp 5, a lifting platform 10, a driving mechanism 11, a fixed pulley 13, a shell 14, a bottom plate 15, a mounting frame 16, a U-shaped pipe hoop 7, an upper hinged pipe clamp 17 and a lower hinged pipe clamp 18;

referring to fig. 1, the housing 14 and the driving mechanism 11 are fixed to the base plate 15, and the outer bottom surface of the mounting bracket 16 is fixed to the inner bottom surface of the housing 14; the winding and separating device 1 and the track plate 3 are both arranged on the back of the mounting frame 16, and the bent template mechanism 2 is arranged on the track plate 3in a sliding manner; the lifting platform 10 is arranged on the side surface of the mounting frame 16 in a sliding manner;

referring to fig. 1-2, the take-up and separation device 1 comprises: the steel wire rope winding and separating mechanism is detachably connected with the rotating mechanism, and the steel wire rope winding and separating mechanism is separated from the rotating mechanism when the flexible pipe 6 is tested; when the hinged pipe 19 is tested, the steel wire rope winding and separating mechanism is meshed with the rotating mechanism.

Referring to fig. 1, the drive mechanism 11 includes: servo motor and universal joint, servo motor set up on bottom plate 15, servo motor's axle head and universal joint's one end coaxial setting, and universal joint's the other end sets up on wire rope rolling separating mechanism for power transmission drives wire rope rolling separating mechanism and tightens up or loosen wire rope 4.

Referring to fig. 1, the lifting platform 10 is slidably disposed on a side surface of the mounting frame 16, and the lifting platform 10 is disposed on a side surface of the mounting frame 16 near the winding and separating device 1.

Referring to fig. 1, the number of the flexible pipe clamps 5 is two, one flexible pipe clamp 5 is bolted to the lifting platform 10, and the other flexible pipe clamp 5 is slidably disposed on the other side surface of the mounting frame 16 and slides up and down along the side surface; one end of a steel wire rope 4 is fixed on the winding and separating device 1, and the steel wire rope 4 sequentially bypasses the fixed pulley 13 and the bent template mechanism 2 and is finally fixedly connected to the other flexible pipe clamp 5;

referring to fig. 1, a U-shaped pipe clamp 7 is provided at the bottom of the mounting bracket 16, the U-shaped pipe clamp 7 being used to fix the flexible pipe 6; u-shaped pipe hoop 7, when flexible pipe 6 was tested, avoided right side flexible pipe 6 to break away from flexible pipe anchor clamps 5 on right side. The servo motor drives the universal coupling to rotate, the universal coupling 12 drives the winding and separating device 1 to tighten or loosen the steel wire rope 4, the steel wire rope 4 enables the bending template mechanism 2 to move in the track plate 3 through the fixed pulley 13, and finally the steel wire rope 4 pulls the other flexible pipe clamp 5 to slide up and down;

specifically, referring to fig. 1, the method further includes: v-arrangement cushion 8, V-arrangement cushion 8 set up in the bottom of mounting bracket 16 for support flexible pipe 6, when flexible pipe 6 experiments, flexible pipe 6's right side touches the mounting panel bottom when the bending reduces, avoids the damage of flexible pipe 6 and mounting panel.

Note that the housing 14 is welded to the bottom plate 15. The rolling and separating device 1 and the track plate 3 can be fixed on the back of the mounting frame 16 through screws. The bending template mechanism 2 is arranged in a bending sliding rail of the track plate 3in a sliding and bending mode, a steel wire rope 4in a convenience room drives the flexible pipe 6 to perform regular bending deformation, and data measurement of the flexible pipe 6 is facilitated. The fixed pulley 13 is fixedly arranged on the top of the mounting frame 16 and changes the direction of the steel wire rope 4. The winding and separating device 1 is arranged on the top surface of the mounting plate as shown in figures 1 and 2. The lifting platform 10 is arranged on the left side surface of the mounting frame 16 in a sliding manner and slides up and down along the left side surface, and when the flexible pipe 6 is tested, the flexible pipe 6 is fixed on the mounting frame 16 by the U-shaped pipe hoop 7, so that the lifting platform 10 is fixed; when articulated pipe 19 is tested, because last articulated pipe anchor clamps 17 centre gripping articulated pipe 19 when rotatory deformation, make articulated pipe 19 distortion, must make the lift platform 10 of articulated pipe 19 lower extreme rise, namely make the setting rise at the articulated pipe anchor clamps 18 of lift platform 10 down, avoided articulated pipe 19 to be elongated like this, reduced experimental error. The right flexible pipe clamp 5 and the right lower hinged pipe clamp 18 are both connected to the lifting platform 10 through bolts, so that the flexible pipe clamp and the lower hinged pipe clamp are convenient to disassemble, and the lower hinged pipe 19 is connected to the lifting platform 10 through bolts during a hinged pipe 19 experiment; in the experiment of the flexible pipe 6, the flexible pipe clamp 5 on the left side is bolted on the lifting platform 10.

Referring to fig. 1 and 3, an upper articulated pipe clamp 17 is arranged on the rotating mechanism, and a lower articulated pipe clamp 18 is detachably arranged on the lifting platform 10; the upper articulated pipe clamp 17 and the lower articulated pipe clamp 18 are used to clamp the articulated pipe 19.

Specifically, referring to fig. 1, the test fixture further comprises a supporting seat 9, the supporting seat 9 is disposed at the bottom of the mounting frame 16, and during an experiment of the hinged pipe 19, the supporting seat 9 is used for supporting the hinged pipe 19.

First, test for measuring the flexible tube 6:

during testing, the flexible pipe 6 with the length of 3-3.5 m and the inner diameter of 2-4 in is arranged on the flexible pipe clamp 5, and the whole test bed is placed in a temperature test box. As shown in fig. 1 and 2, one end of a flexible pipe 6 is fixed on the flexible pipe clamp 5 on the left side, the other end of the flexible pipe 6 is fixed on the flexible pipe clamp 5 on the right side, and the flexible pipe 6 is fixed on a mounting frame 16 by a U-shaped pipe hoop 7; according to the minimum bending radius of the flexible tube 6, as shown in table 1. The servo motor drives the universal coupling to rotate, the universal coupling drives the steel wire rope winding and separating mechanism to tighten or loosen the steel wire rope 4, the steel wire rope 4 bypasses the fixed pulley 13 to drive the bending template mechanism 2 to slide in the fan-shaped track groove of the track plate 3, the end part of the steel wire rope 4 drives the flexible pipe clamp 5 on the right side to ascend or descend, and therefore the flexible pipe 6 is stretched, bent and rebounded to be straightened through bending, and the process is repeated.

Bending 100 times at the lowest temperature (-60 ℃), 260 times at room temperature, and 260 times at room temperature under pressure (140 MPa at the highest test pressure). The temperature test box meets the requirement of the lowest working temperature of 60 ℃ below zero.

Second, test for measuring articulated tube 19:

during testing, the flexible pipe 6 and the flexible clamp arranged on the lifting platform 10 need to be removed, then the lower hinged pipe 19 is installed on the lifting platform 10, the hinged pipe 19 (inner diameters of 1in, 11/2in, 2in, 21/2in, 3in and 4in) is taken and fixed on the upper hinged pipe clamp 17 and the lower hinged pipe clamp 18, and the support seat 9 can support the bent hinged pipe 19; at the moment, the steel wire rope rolling and separating mechanism is meshed with the rotating mechanism and is connected with the rotating mechanism, the servo motor drives the universal coupling to rotate, the universal coupling drives the steel wire rope rolling and separating mechanism to rotate, the steel wire rope rolling and separating mechanism drives the upper hinged pipe clamp 17 to rotate, and therefore the dynamic range rotation test of the hinged pipe 19 is measured.

In the test with the hinged tube 19, the test stand was placed in a temperature test chamber. The lower hinged pipe clamp 18 is used for fixedly clamping the hinged pipe 19, and the upper hinged pipe clamp 17 rotates 45 degrees along with the steel wire rope winding and separating mechanism. The reciprocating cycle, at nominal pressure, is at least 620 times rotating cycles in two planes at an angle of 45 ° for the line of articulated pipe 19 at only one point of rotation.

The specifications and basic parameters of the flexible throttling well pressing pipeline are shown in the table 1:

table 1: the specification and basic parameters of the flexible throttling well-killing pipeline are as follows: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a test bench for measuring flexible pipe or articulated pipe fatigue, includes the test bench, its characterized in that still includes:

the driving device is used for driving the hinged pipe clamp to clamp the hinged pipe and testing the fatigue strength of the hinged pipe;

2. A test rig for measuring fatigue of a flexible or articulated pipe according to claim 1, further comprising: the V-shaped cushion block is arranged at the bottom of the mounting rack and used for supporting the flexible pipe.

3. A test rig for measuring fatigue of a flexible or articulated pipe according to claim 1, wherein the drive mechanism comprises: servo motor and universal joint, servo motor sets up on the bottom plate, servo motor's axle head with universal joint's one end is coaxial to be set up, universal joint's the other end sets up on the rolling separator.

4. Test bench for measuring fatigue of flexible or articulated pipes according to claim 1, characterized in that said rolling and separating device comprises: the steel wire rope winding and separating mechanism and the rotating mechanism are detachably arranged; when the flexible pipe is tested, the steel wire rope winding and separating mechanism is arranged separately from the rotating mechanism; when the hinged pipe is tested, the steel wire rope winding and separating mechanism is meshed with the rotating mechanism.

5. A test bench for measuring fatigue of flexible or articulated pipes according to claim 4, wherein the upper articulated pipe holder is arranged on the rotating mechanism and the lower articulated pipe holder is detachably arranged on the lifting platform.

6. The test bench of claim 1, wherein the lifting platform is slidably disposed on a side surface of the mounting frame, and the lifting platform is disposed on a side surface of the mounting frame near the rolling and separating device.

7. A test bench for measuring fatigue of flexible pipes or articulated pipes according to claim 6, wherein the number of the flexible pipe clamps is two, one of the flexible pipe clamps is detachably arranged on the lifting platform, and the other flexible pipe clamp is slidably arranged on the other side surface of the mounting rack; and the other end of the steel wire rope is fixedly connected to the other flexible pipe clamp.

8. The test stand for measuring fatigue of a flexible or articulated pipe according to claim 1, further comprising a support seat provided on the mounting frame; when articulated pipe experiment, the supporting seat is used for supporting articulated pipe.