CN212432835U - Pipeline elasticity lays curvature radius measuring device - Google Patents

Abstract

The utility model discloses a pipeline elasticity lays curvature radius measuring device, including fixed platform, fixed platform is last to be connected with spud pile, push rod and location platform, the spud pile is total two, still has put the tubular product that awaits measuring on the fixed platform, and the tubular product that awaits measuring is placed in same one side of two spud piles, and the tubular product that awaits measuring is withstood from one side relative with the spud pile to push rod one end, and the push rod passes the location platform and withstands the tubular product that awaits measuring. The two fixing piles are used as supports of the pipes to be tested, the push rod is used as a tool for bending the pipes to be tested, and therefore the pipes to be tested are kept in a bending state to test whether the pipes to be tested can keep stability of physical properties such as pipe pressure bearing capacity, external force resistance and the like, and therefore the minimum curvature radius of the pipeline is determined on the safe premise, and data are provided for follow-up construction.

Description

Pipeline elasticity lays curvature radius measuring device

Technical Field

The utility model belongs to the oil and gas field, concretely relates to pipeline elasticity lays curvature radius measuring device.

Background

The oil field is in order to solve the problem that the corrosion of steel pipeline gathering and transportation oil reveals, the life-span is short, the pipeline gathering and transportation test of introduction, the oil gathering and transportation is buried with the general ditch of pipeline and is laid during the test, the mountain-turning mountain-climbing, need the pipeline diversion to adopt elasticity to lay at first, also utilize the flexibility of pipeline self, under the prerequisite that does not influence body stability, lean on nature or certain external force to carry out the bending, realize the pipeline diversion. When the elastic laying cannot meet the requirement of direction changing, the elbow is adopted for direction changing, but the cost of the elbow direction changing is higher than that of the elastic laying, and the construction difficulty is increased. The oil collecting and transporting pipelines are various in types, and the curvature radius of the pipelines is influenced by the caliber, raw materials, wall thickness, manufacturing process and the like. In the design stage of test development, in order to improve the accuracy of design, reduce the engineering cost, reasonably select the minimum curvature radius of elastic laying of the pipeline and improve the design quality, the minimum curvature radius of elastic laying of the pipeline for oil gathering and transportation needs to be determined and mastered, and the device for measuring the curvature radius of elastic laying of the pipeline for oil gathering and transportation is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pipeline elasticity lays curvature radius measuring device to confirm the minimum curvature radius that pipeline elasticity laid.

The utility model aims at realizing through following technical means, a pipeline elasticity lays curvature radius measuring device, including fixed platform, last spud pile, push rod and the location platform of being connected with of fixed platform, the spud pile is total two, is equipped with the push rod between two spud piles, and the push rod passes from the location platform.

The push rod is a threaded push rod, a threaded push rod hole matched with the threaded push rod is formed in the positioning table, and the push rod penetrates through the threaded push rod hole.

Still be connected with clamping device on the push rod front end, clamping device is U type draw-in groove.

The tail end of the push rod is also connected with a rotary handle.

The fixing platform is further connected with a fixing clamp, the fixing clamp is L-shaped, one side of the fixing clamp is detachably connected to the fixing pile, and the other side of the fixing clamp is in surface contact with the fixing platform.

The fixing clamp is provided with a fixing pile hole on one side, the fixing clamp is inserted into the fixing pile through the fixing pile hole, and the fixing clamp is fixed on the fixing pile through nuts on two sides of the fixing clamp.

The connecting line of the two fixing piles is perpendicular to the push rod.

The extension line of the push rod is intersected on the central point of the connecting line of the two fixing piles.

The beneficial effects of the utility model reside in that: 1. through the support of two spuds as the tubular product that awaits measuring, the push rod is as the instrument of crooked tubular product that awaits measuring to keep the tubular product that awaits measuring in bending state testing whether can remain stable under this kind of condition, with provide help to follow-up construction, and simple structure, the operation of being convenient for.

2. The pipe to be tested is wrapped by the clamping device on the push rod, so that the push rod can push the pipe to be tested to be more stable when being bent, and the front end of the push rod is prevented from being dislocated with the pipe to be tested in the pushing process.

3. Through installing the fixation clamp on the spud pile, will await measuring tubular product and fix between fixation clamp and the spud pile, avoid awaiting measuring tubular product in bending process, and the position between the spud pile produces the change.

Drawings

FIG. 1 is a schematic structural diagram of a device for measuring the curvature radius of elastic laying of a pipeline;

in figure 1, a handle is rotated; 2. a push rod; 3. a fixed platform; 4. a clamping device; 5. a pipe to be tested; 6. fixing piles, 7; a positioning table; 8. and (4) fixing clips.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Detailed Description

[ example 1 ]

As shown in fig. 1, the device for measuring the curvature radius of elastic laying of the pipeline comprises a fixed platform 3, wherein two fixed piles 6, two push rods 2 and two positioning tables 7 are connected to the fixed platform 3, the push rods 2 are arranged between the two fixed piles 6, and the push rods 2 penetrate through the positioning tables 7.

During the specific use, fixed platform 3's upper surface is connected with two spud piles 6, and the tubular product 5 that awaits measuring is put on fixed platform 3 to the south side of the tubular product 5 that awaits measuring contacts with the north side of spud pile 6, and the tubular product 5 that awaits measuring is held by spud pile 6 support. Wherein the pipe 5 to be measured is an RTP nonmetal pipeline.

The north side of fixed platform 3 is connected with location platform 7, and push rod 2 passes location platform 7 and extends to the south, when promoting push rod 2 and move to the south, 2 south ends of push rod meet into the north side of the tubular product 5 that awaits measuring gradually, finally with the contact of tubular product 5 that awaits measuring, continue to impel push rod 2, then tubular product 5 that awaits measuring is protruding to the south, form an arc, under the different camber circumstances, the radius of curvature is different, consequently as long as control push rod 2 propulsive distance, can let tubular product 5 that awaits measuring keep testing at the camber of difference.

[ example 2 ]

As shown in fig. 1, based on embodiment 1, the push rod 2 is a threaded push rod, a threaded push rod hole matched with the threaded push rod is formed on the positioning table 7, and the push rod 2 passes through the threaded push rod hole.

The outer side of the push rod 2 is provided with threads, a south-north threaded push rod hole is formed in the positioning table 7, the push rod 2 penetrates through the threaded push rod hole to support the pipe 5 to be tested, and the position of the screw rod is fixed through the threads.

The front end of the push rod 2 is also connected with a clamping device 4, and the clamping device 4 is a U-shaped clamping groove.

The south end of the push rod 2 is also connected with a U-shaped clamping device 4, the pipe 5 to be tested is accommodated in the clamping device 4, and the point at one end of the push rod 2 is in surface contact with the pipe 5 to be tested, so that the surface of the clamping device 4 is in surface contact with the pipe 5 to be tested, the pipe 5 to be tested is more stable when deformed by the push rod 2, and the phenomenon that the push rod 2 does not push the center of the pipe 5 to be tested is avoided.

The tail end of the push rod 2 is also connected with a rotary handle 1.

The north end of the push rod 2 is connected with a rotary handle 1, which is convenient for rotating the push rod 2.

Still be connected with fixation clamp 8 on fixed platform 3, fixation clamp 8 is the L type, and wherein one side can be dismantled and connect on spud pile 6, another side and fixed platform 3 surface contact.

Fixing clamp 8 goes up to open on one side has the fixing pile hole, and fixing clamp 8 inserts on spud pile 6 through the fixing pile hole, and fixing clamp 8 is fixed on spud pile 6 through the nut in fixing clamp 8 both sides.

Fixation clamp 8 can be dismantled and connect on spud pile 6, and after tubular product 5 that awaits measuring was put 6 north sides of spud pile, earlier to 6 upper end mounting nuts of spud pile, then install fixation clamp 8 on spud pile 6, fix fixation clamp 8 on spud pile 6 through the nut about fixation clamp 8.

Fixation clamp 8 and spud pile 6 have also formed a U-shaped structure, have further fixed the both ends of the tubular product 5 that awaits measuring, prevent that the tubular product 5 that awaits measuring from shifting when the bending.

The connecting line of the two fixing piles 6 is vertical to the push rod 2.

The extension line of the push rod 2 is intersected on the central point of the connecting line of the two fixing piles 6.

Two spud piles 6 are located fixed platform 3's east and west both sides respectively, and the extension line of push rod 2 is perpendicular with the line of two spud piles 6, and on the mid point of the extension line intersection of push rod 2 and two spud piles 6 lines, it is the center of the tubular product 5 that awaits measuring to guarantee that push rod 2 promotes like this, has guaranteed that the tubular product 5 that awaits measuring is crooked into arc and crooked camber.

[ example 3 ]

As shown in fig. 1, on the basis of embodiment 2, a method for using a device for measuring the curvature radius of elastic laying of a pipeline, firstly, calculating the curvature radius numerical values of a series of pipes 5, 1000D and 900D … … to be measured; and calculating corresponding curvature radius values when the curvatures of the pipe to be measured are 1000D, 900D and 800D … … are analogized in sequence, and providing data for the propelling distance of the follow-up push rod 2.

Secondly, placing the pipe 5 to be measured on one side of the two fixing piles 6, rotating the handle to push the push rod 2 to be close to the pipe 5 to be measured, clamping the pipe 5 to be measured by the clamping device 4 until the pipe is pushed to the curvature radius value of 1000D, and enabling the pipe 5 to be measured to be in a curved arc shape;

the pipe 5 to be tested is placed on the north side of the fixing pile 6, the rotating handle 1 is rotated to push the push rod 2 to move south, the pipe 5 to be tested is bent, the rotation is stopped when the bending radius of the pipe 5 to be tested is equal to 1000D and the corresponding curvature radius is equal, and the push rod 2 is clamped in the positioning table 7.

Thirdly, maintaining the bending state of the pipe 5 to be tested in the second step; and (5) maintaining the pipe to be tested at the 1000D state for 24 hours.

And fourthly, taking down the pipe 5 to be tested, performing destructive test, returning to the second step if the property of the pipe 5 to be tested is not changed, and pushing the push rod 2 according to the curvature radius numerical values corresponding to 900D and 800D … … until the property of the pipe 5 to be tested is changed in the destructive test, wherein D at the moment is the minimum curvature radius of the pipe 5 to be tested.

The pipe to be tested is taken down and subjected to destructive test, and the stability of physical properties such as the pressure bearing capacity, the external force resistance and the like of the pipe 5 to be tested is detected, such as Vicat softening point test, DSC test, high-temperature high-pressure autoclave test, tensile property test, in-band pressure bending test, in-band pressure axial tensile test, high-temperature internal pressure axial tensile test, hydraulic pressure blasting (room temperature), hydraulic pressure blasting (high temperature) and air tightness detection. If the property of the pipe 5 to be tested is obviously changed at this time, which indicates that the pipe to be tested cannot undertake the elastic laying under the condition of bending 1000D, 1000D is the minimum curvature radius of the pipe 5 to be tested, and then the curvature of the elastic laying needs to be controlled to be more than 1000D in the subsequent construction.

If the property is not changed under the condition of 1000D curvature, returning to the second step, and performing destructive test again when the bending radius of the pipe 5 to be tested is equal to the corresponding curvature radius when the bending radius is 900D, if the property is changed, 900D is the minimum curvature, if the property is not changed, returning to the second step, and continuously repeating until the bending radius of the pipe 5 to be tested is equal to the corresponding curvature radius when the bending radius is 800D, and the curvature at the moment is the minimum curvature.

For example, the property of the pipe to be measured is changed at 600D, then 600D is the minimum curvature, and in the following construction, the same type of pipe must keep the curvature at 700D or above when laid with the curvature.

If the property is changed at 1000D, keeping a new pipe 5 to be tested at 1100D, then testing, and continuously adding 100D until the property of the pipe is unchanged.

In the second step, after the pipe 5 to be measured is placed on one side of the two fixing piles 6, the fixing clamp 8 is further installed on the fixing piles 6, and the pipe 5 to be measured penetrates through the fixing clamp 8 and the fixing piles 6.

Claims (8)

1. A device for measuring the elastic laying curvature radius of a pipeline is characterized by comprising: fixed platform (3), fixed platform (3) are last to be connected with spud pile (6), push rod (2) and location platform (7), spud pile (6) are total two, are equipped with push rod (2) between two spud piles (6), and push rod (2) pass from location platform (7).

2. A pipe elastic laying radius of curvature measuring device as claimed in claim 1, wherein: the push rod (2) is a threaded push rod, a threaded push rod hole matched with the threaded push rod is formed in the positioning table (7), and the push rod (2) penetrates through the threaded push rod hole.

3. A pipe elastic laying radius of curvature measuring device as claimed in claim 1, wherein: the front end of the push rod (2) is also connected with a clamping device (4), and the clamping device (4) is a U-shaped clamping groove.

4. A pipe elastic laying radius of curvature measuring device as claimed in claim 1, wherein: the tail end of the push rod (2) is also connected with a rotating handle (1).

5. A pipe elastic laying radius of curvature measuring device as claimed in claim 1, wherein: still be connected with fixation clamp (8) on fixed platform (3), fixation clamp (8) are the L type, and wherein one side can be dismantled and connect on spud pile (6), another side and fixed platform (3) surface contact.

6. A pipe elastic laying radius of curvature measuring device of claim 5, wherein: fixing clip (8) are gone up to open on one side has the spud hole, and inserting on spud (6) through the spud hole fixing clip (8), and fixing clip (8) are fixed on spud (6) through the nut in fixing clip (8) both sides.

7. A pipe elastic laying radius of curvature measuring device as claimed in claim 1, wherein: the connecting line of the two fixing piles (6) is vertical to the push rod (2).

8. A pipe elastic laying radius of curvature measuring device as claimed in claim 1, wherein: the extension line of the push rod (2) is intersected on the central point of the connecting line of the two fixing piles (6).

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