CN107643218A - A kind of curved experimental apparatus for testing of wellhead connector big load tension and compression and experimental method - Google Patents
A kind of curved experimental apparatus for testing of wellhead connector big load tension and compression and experimental method Download PDFInfo
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- CN107643218A CN107643218A CN201710811757.2A CN201710811757A CN107643218A CN 107643218 A CN107643218 A CN 107643218A CN 201710811757 A CN201710811757 A CN 201710811757A CN 107643218 A CN107643218 A CN 107643218A
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Abstract
The present invention relates to a kind of curved experimental apparatus for testing of wellhead connector big load tension and compression and experimental method, it is characterised in that：It includes auxiliary mould system, hinge power structure for amplifying system, hydraulic power loading system, input data acquisition analysis system and output data acquisition analysis system；Auxiliary mould system is arranged on existing well head connector system；Hinge power structure for amplifying system is connected with auxiliary mould system, and output loads are provided for auxiliary mould system；Hydraulic power loading system is connected with hinge power structure for amplifying system, and input load is provided for hinge power structure for amplifying；Input data acquisition analysis system is arranged in hinge power structure for amplifying system, and the adaptability to changes on collection hinge power structure for amplifying, which is used as, actually enters load；Output data acquisition analysis system is arranged in wellhead connector system, gathers the adaptability to changes in well head connector system as reality output load.The present invention can be widely applied to underwater oil-gas mining technical field.
Description
Technical field
The present invention relates to underwater oil-gas mining technical field, especially with regard to a kind of curved survey of wellhead connector big load tension and compression
Try experimental provision and experimental method.
Background technology
Subsea production tree by be placed on sea bed underwater well head be made up of valve, pipeline, connector and accessory one
Individual oil extraction system, and subsea production tree wellhead connector is the important spare part of subsea production tree, it can be by subsea production tree
Underwater well head is connected to Deng underwater production facility, realizes the sealing of subsea production tree and underwater well head junction, and prevents oil gas
Reveal, external applied load in carrying.Typically connected between wellhead connector and subsea production tree by extraordinary trapezoidal thread, special type ladder
Shape screw thread has preferable bearing capacity.But due in subsea production tree pipeline etc. action of ocean current lower swing or vibration can lead
Wellhead connector is caused to be acted on by the larger big load including tension and compression including curved, thus it is guaranteed that wellhead connector can be big
It still can preferably be worked under the curved effect of load tension and compression, be that the subsea production system including subsea production tree is safe and reliable
The necessary guarantee of production, thus big load test is carried out to wellhead connector and seems extremely important to observe its performance.
The country has largely on the curved comprehensive experimental device of tension and compression at present, what Chinese patent literature 200520029374.2 proposed
A kind of Multifunction test machine platform module, it can increase various servicing units on platform and be used to realize four kinds of loads of tension and compression bending
Multiple material and structural test under lotus, but the experimental provision could not take the error of component into account.Chinese patent literature
A kind of 201420622826.7 bending normal stresses measure that can carry out crossbeam proposed, Subjected To Combined Axial Loading And Bending deformation experiment, truss
The dynamics experimental device of the kinds of experiments such as internal force determination experiment, statically determinate structure internal force measure, redundant structure internal force measure, although
Experiment considers the influence of foozle, but can not realize the experiment compared with big load.Moreover, it there is no both at home and abroad to well at present
Mouth connector and similar means carry out the research of the simple economic experimental provision of big load experiment.In addition, prior art
Middle drawing bending test device also has the following disadvantages：
When the 1st, carrying out different experiments, it usually needs make different experimental provisions, add the expense of experimental site and experiment
With reducing conventional efficient.
2nd, will to load input system when doing big load experiment, it is necessary to there is larger input load to complete task
Ask higher, this can also increase the expense of experiment.
3rd, the existing deformation measurement for drawing bending test device generally to only considered test specimen in terms of measurement, without
Consider whether input load meets to require.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of curved experimental apparatus for testing of wellhead connector big load tension and compression
And experimental method, the curved experiment of big load tension and compression can be carried out to wellhead connector and similar means, there is low load input, it is big to carry
The characteristics of lotus exports, and assembling and disassembling is convenient.
To achieve the above object, the present invention takes following technical scheme：A kind of curved test of wellhead connector big load tension and compression
Experimental provision, it is characterised in that：It includes auxiliary mould system, hinge power structure for amplifying system, hydraulic power loading system, defeated
Enter data acquisition and analysis system and output data acquisition analysis system；The auxiliary mould system is arranged on existing wellhead connector
In system；The hinge power structure for amplifying system is connected with the auxiliary mould system, is provided for the auxiliary mould system defeated
Go out load；The hydraulic power loading system is connected with the hinge power structure for amplifying system, is the hinge power structure for amplifying
Input load is provided；The input data acquisition analysis system is arranged in the hinge power structure for amplifying system, described in collection
Adaptability to changes on hinge power structure for amplifying, which is used as, actually enters load；The output data acquisition analysis system is arranged on the well
On mouth connector system, the adaptability to changes in the wellhead connector system is gathered as reality output load.
The auxiliary mould system includes upper I-steel shelf, upper I-steel shelf connection component, connection welding plate, lower I-shaped
Steelframe is sub, lower I-steel shelf connection component, installs fixture, lower I-steel shelf fixed block and two be symmetricly set on it is described under
The hydraulic cylinder support system of I-steel shelf both sides；The upper I-steel shelf both ends by the upper I-steel connection component with
The hinge power structure for amplifying system connection, the upper I-steel bottom shelf are connected by the connection welding plate with the well head
The top connection of device system；Amplified by the lower I-steel connection component and the hinge power at the lower I-steel shelf both ends
Structural system is connected, and the lower I-steel shelf top is connected by the bottom of the installs fixture and the wellhead connector system
Connect, the lower I-steel shelf bottom is fixed on the ground by the lower I-steel shelf fixed block；Two cylinder bottoms
The bottom of seat is fixedly installed on the ground of the lower I-steel shelf both sides by the cylinder bottom seat board respectively, two institutes
State hydraulic cylinder upper cover plate described in the top difference bolt connection two of hydraulic cylinder base.
The upper I-steel shelf connection component is provided with the welding frid of some necks, two irregular pads including two surfaces
Block, some regular cushion blocks and two otic placodes；Side of the two welding groove plate surfaces with neck and the upper I-steel shelf spiral shell
Tether and connect, the two irregular cushion blocks be plugged in the upper I-steel shelf lateral surface two straight trough mouths and the welding frid it
Between, and the upper surface of the irregular cushion block matches with the upper I-steel shelf outer surface；Some regular cushion blocks
It is plugged between other straight trough mouths of the upper I-steel shelf and the welding frid；Two otic placodes and two welding grooves
Crab bolt connects, and its surface opposite side is provided with the mounting hole for being connected with the hinge power structure for amplifying system；Under described
I-steel shelf connection component includes two welding otic placodes, and the two welding otic placodes are respectively welded at the lower I-steel shelf two
End, and the two welding otic placode surfaces are provided with some mounting holes for being connected with the hinge power structure for amplifying system.
The two hydraulic cylinder support systems include a hydraulic cylinder base, an alterable height cylinder bottom seat board and
One hydraulic cylinder upper cover plate；The bottom of two hydraulic cylinder bases is symmetricly set on institute by the two cylinder bottom seat boards respectively
On the ground for stating lower I-steel shelf both sides, hydraulic pressure cylinder top head described in the top difference bolt connection two of two hydraulic cylinder bases
Plate, and three cavities for placing hydraulic cylinder are provided with the top of two hydraulic cylinder bases, under the two hydraulic cylinder upper cover plates
Surface is provided with the groove to match with the cavity.
The hinge power structure for amplifying system includes two symmetrically arranged hinge power structure for amplifying, and each hinge power
Structure for amplifying includes three transverse bars being arranged side by side and two pairs of hinges being disposed between the transverse bar；It is described each
Transverse bar and two pairs of hinge end sections are by selling be hinged in one, and upper and lower hinge and each transverse bar in two pairs of hinges
Angle is identical；The other end of each transverse bar is hinged by small pin and the hydraulic power loading system, each to the hinge
In the other end of upper and lower hinge pass through ear in middle pin and the auxiliary mould system in upper and lower i-beam frame sub-component respectively
Plate and welding otic placode are hinged.
The hydraulic power loading system includes some hydraulic cylinders and hydraulic control system；Each hydraulic cylinder is set respectively
In two hydraulic cylinder bases of the auxiliary mould system both sides, and one end of each hydraulic cylinder by small pin with it is described
Each transverse bar connection in hinge power structure for amplifying system；Other end end face is by the hydraulic cylinder base and hydraulic cylinder upper cover plate
Surface is fixed；The hydraulic control system includes controllor for step-by-step motor and hydraulic circuit components containing pump；The stepper motor control
Device processed is connected by signal wire with each hydraulic cylinder, for providing control signal for each hydraulic cylinder；The hydraulic circuit containing pump
Component connects each hydraulic cylinder and hydraulic power unit, for providing hydraulic pressure for each hydraulic cylinder.
The input data acquisition analysis system include some transverse bar tension and compression foil gauges, some hinge tension and compression foil gauges and
First static resistance deformeter；The transverse bar tension and compression foil gauge is arranged on each transverse bar of the hinge power structure for amplifying system
Upper surface, the hinge tension and compression foil gauge is arranged on the upper surface of the upper hinge of each pair of hinge of the hinge power structure for amplifying
With the lower surface of lower hinge；Each the transverse bar tension and compression foil gauge and hinge tension and compression foil gauge connect and compose measurement by wire
It is connected after electric bridge with first static resistance deformeter, gathers the adaptability to changes on each transverse bar and hinge in real time.
It is quiet to foil gauge, connector radial strain piece and second that the output data acquisition analysis system includes connector shaft
State resistance instrument；The connector shaft is arranged on the connector body in the wellhead connector system to foil gauge, the company
Connect on the center ring that device radial strain piece is arranged in the wellhead connector system；Each connector shaft is to foil gauge and company
Connect device radial strain piece and connected and composed by wire and is connected with second static resistance deformeter after measuring bridge, adopted in real time
Collect the adaptability to changes of the wellhead connector system.
A kind of curved test experiments method of wellhead connector big load tension and compression using described device, it is characterised in that including with
Lower step：1) wellhead connector system and auxiliary mould system, hinge power structure for amplifying system and hydraulic power are added respectively
Loading system connects；2) input data acquisition analysis system and output data acquisition analysis system are separately mounted into hinge power to put
In Large Structure Systems and wellhead connector system；3) according to the required load of requirement of experiment, and hinge power structure for amplifying system
Initial times of force amplifying coefficient, obtain the output loads calculated value of hydraulic cylinder；4) hydraulic control system carries according to obtained output
Lotus calculated value sends control signals to both sides hydraulic cylinder, carries out tensile, compressive, bending load test experiment；5) according to input, output data
The stress data of acquisition system collection and the output loads calculated value of hydraulic cylinder are analyzed, obtains the various errors under the load
Value；6) on the premise of keeping hydraulic cylinder output loads constant, times force amplifying coefficient of hinge power structure for amplifying system, weight are changed
Multiple step 4~5), observe the mechanical behavior of the well head connector system under different output loads.
In the step 4), hydraulic control system sends control signals to both sides liquid according to obtained output loads calculated value
Cylinder pressure, the method for carrying out tensile, compressive, bending load test experiment are：When carrying out drawing load test stabilization：Pass through hydraulic control system and step
Stepper motor controller control left side hydraulic cylinder moves right, right side hydraulic cylinder is to left movement；When carrying out compressive load experiment：Test run
After row, transported to the right to left movement, right side hydraulic cylinder by hydraulic control system and controllor for step-by-step motor control left side hydraulic cylinder
It is dynamic；When carrying out curved load test stabilization：By hydraulic control system and controllor for step-by-step motor control left side hydraulic cylinder to left movement,
Right side hydraulic cylinder moves right.
For the present invention due to taking above technical scheme, it has advantages below：1st, the present invention is put due to being provided with hinge power
Large Structure Systems, input load can be amplified 20 times by it, and can be changed by changing hinge length and horizontal direction angle
Times force amplifying coefficient, reduces the output loads requirement to hydraulic cylinder, disclosure satisfy that the various loads for carrying out the curved test experiments of tension and compression
Lotus demand.2nd, articulated manner is used between auxiliary mould system and experimental subjects of the present invention, it is convenient to remove, when needs are to different
When experimental subjects carries out tension and compression curved experiment, auxiliary mould system need to only be sling, transition apparatus simulation well head is turned round it is lower, so
Different transition apparatus is used according to different test specimens afterwards.3rd, the present invention in upper I-steel connection component due to being provided with weldering
Access slot plate, by the structure and height of regulation rule cushion block and irregular cushion block, and then welding frid is adjusted up and down, you can eliminate
The foozle of alignment error and hinge etc., ensure correct installation.4th, in the present invention in hinge power structure for amplifying hinge length,
And the height of hydraulic cylinder bottom cushion block is adjustable, the curved reality of big load tension and compression to wellhead connector or similar means is realized
The different requirements tested, the scope of application are wider.5th, this experimental provision is simple in construction, reasonable in design, occupies little space, experimental provision weight
Multiple utilization rate is higher, has the characteristics of low load input, big load output, economic and practical, has to production scene and preferably refers to
Lead effect.
Brief description of the drawings
Fig. 1 is the main view overall structure schematic cross-sectional view of the present invention；
Fig. 2 is the vertical view overall structure schematic cross-sectional view of the present invention；
Fig. 3 is the lower I-steel shelf of the present invention and fixed block schematic perspective view；
Fig. 4 is the lower I-steel shelf of the present invention and fixed block schematic side view；
Fig. 5 is frid in the present invention and upper I-steel shelf assembling structure schematic diagram；
Fig. 6 is frid dimensional structure diagram in the present invention；
Fig. 7 is the front view of frid in the present invention；
Fig. 8 is the top view of frid in the present invention；
Fig. 9 is the side view of frid in the present invention；
Figure 10 is otic placode dimensional structure diagram in the present invention；
Figure 11 is otic placode front view in the present invention；
Figure 12 is the structural representation that hinge power of the present invention amplifies component；
The hinge power that Figure 13 is Figure 12 amplifies component front view.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Fig. 1~Fig. 5, a kind of curved experimental apparatus for testing of wellhead connector big load tension and compression provided by the invention, bag
Include auxiliary mould system, hinge power structure for amplifying system, hydraulic power loading system, input data acquisition analysis system and output
Data acquisition and analysis system；Wherein, auxiliary mould system is arranged on existing well head connector system or similar means, hinge power
Structure for amplifying system is connected with auxiliary mould system, and output loads are provided for auxiliary mould system；Hydraulic power loading system with
Hinge power structure for amplifying system is connected, and input load is provided for hinge power structure for amplifying；Input data acquisition analysis system is set
In hinge power structure for amplifying system, the adaptability to changes on collection hinge power structure for amplifying, which is used as, actually enters load；Output data
Acquisition analysis system is arranged in wellhead connector system, and the adaptability to changes gathered in well head connector system carries as reality output
Lotus.
Wellhead connector system includes simulation tree body 1, production tree test pile 2, connector body 3, support ring 4, center ring
5th, closing piece 6 and drive ring 7.Wherein, simulation tree body 1 is arranged on the top of production tree test pile 2, and both are close by connector body 3
Envelope connection.The top of connector body 3 is fixedly connected with simulation tree body 1 bottom, and the bottom of connector body 3 passes through support ring 4 and set
The top of center ring 5 outside production tree test pile 2 is located to be fixedly connected.Some locks are arranged at intervals in the cavity of connector body 3
Block 6, each closing piece 6 are connected by internal thread with the outer wall of production tree test pile 2.The outer cover of connector body 3 is provided with drive ring 7, and
It is contact of incline plane between connector body 3 and drive ring 7, for being moved up and down under hydraulic-driven, promotes the card entry/exit of closing piece 6
The thread groove inside/outside of production tree test pile 2 is to lock/unlock well head and well head above equipment.
Auxiliary mould system include upper I-steel shelf 8, connection welding plate 9, lower I-steel shelf 10, installs fixture 11, under
I-steel shelf fixed block 12, upper I-steel shelf connection component, lower I-steel shelf connection component and it is symmetricly set on down
The hydraulic cylinder support system of the both sides of I-steel shelf 10.Wherein, the upper both ends of I-steel shelf 8 by upper I-steel connection component with
Hinge power structure for amplifying system connects, in the connection welding plate 9 and wellhead connector system that the upper bottom of I-steel shelf 8 passes through welding
The simulation tree body 1 in portion connects.The lower both ends of I-steel shelf 10 pass through lower I-steel connection component and hinge power structure for amplifying system
Connection, the lower top of I-steel shelf 10 pass through installs fixture 11 and the bottom of production tree test pile 2 of wellhead connector system bottom
Connection, the lower bottom of I-steel shelf 10 is fixed on the ground by lower I-steel shelf fixed block 12.
Two hydraulic cylinder support systems include a hydraulic cylinder base 13, an alterable height cylinder bottom seat board 14 and
One hydraulic cylinder upper cover plate 15.The bottom of two hydraulic cylinder bases 13 is symmetricly set on lower work by two cylinder bottom seat boards 14 respectively
On the ground of 10 both sides of word steelframe, the top difference hydraulic cylinder upper cover plate 15 of bolt connection two of two hydraulic cylinder bases 13, and two
The top of hydraulic cylinder base 13 is provided with three cavities for placing hydraulic cylinder, the lower surface of two hydraulic cylinder upper cover plate 15 be provided with
The groove that the cavity matches.
As shown in Fig. 6~Figure 11, upper I-steel shelf connection component includes the welding groove that two surfaces are provided with some necks
Plate 16, two irregular cushion blocks 17, some regular otic placodes 19 of cushion block 18 and two.Side of two welding frid 16 surfaces with neck with
The upper bolt connection of I-steel shelf 8, two irregular cushion blocks 17 are plugged in two straight trough mouths and the welding of the lateral surface of I-steel shelf 8
Between frid 16, and the upper surface of irregular cushion block 17 matches with the upper outer surface of I-steel shelf 8；Some regular cushion blocks 18
It is plugged between other straight trough mouths of I-steel shelf 8 and welding frid 16.Two otic placodes 19 and two welding frid 16 bolts connect
Connect, and the surface opposite side of two otic placode 19 is provided with the mounting hole for being connected with hinge power structure for amplifying system.
Lower I-steel shelf connection component includes two welding otic placodes 20, and two welding otic placodes 20 are respectively welded at lower i-beam frame
Sub 10 both ends, and the surface of two welding otic placodes 20 is provided with some mounting holes for being connected with hinge power structure for amplifying system.
As shown in Figure 12 and Figure 13, hinge power structure for amplifying system includes two symmetrically arranged hinge power structure for amplifying, and often
One hinge power structure for amplifying includes three transverse bars 21 being arranged side by side and two pairs of hinges being disposed between each transverse bar
Chain 22.Each transverse bar 21 and two pairs of ends of hinge 22 are by selling be hinged in one, and upper and lower hinge and transverse bar 21 in two pairs of hinges
Angle it is identical.Each other end of transverse bar 21 is hinged by small pin and hydraulic power loading system, it is each to it is upper in the hinge 22,
The other end of lower hinge passes through pin in one and the otic placode 19 in upper and lower i-beam frame sub-component in auxiliary mould system and weldering respectively
Ear connecting plate 20 connects.
Hydraulic power loading system includes some hydraulic cylinders 23 and by controllor for step-by-step motor 24 and the group of hydraulic circuit containing pump
The hydraulic control system that part 25 is formed.Each hydraulic cylinder 23 is separately positioned in the hydraulic cylinder base 13 of auxiliary mould system both sides,
And one end of each hydraulic cylinder 23 is connected by small pin with the transverse bar 21 in hinge power structure for amplifying system, other end end face is by liquid
Cylinder pressure base 13 is fixed with the inner surface of hydraulic cylinder upper cover plate 15.Controllor for step-by-step motor 24 is connected by signal wire and each hydraulic cylinder 23
Connect, for providing control signal for each hydraulic cylinder 23；Hydraulic circuit components containing pump 25 connect each hydraulic cylinder 23 and hydraulic power unit, use
In for each hydraulic cylinder 23 provide hydraulic pressure.
Input data acquisition analysis system includes some transverse bar tension and compression foil gauges 26, some and of hinge tension and compression foil gauge 27
First static resistance deformeter 28.Transverse bar tension and compression foil gauge 26 is arranged on each transverse bar 21 in hinge power structure for amplifying system
Upper surface, hinge tension and compression foil gauge 27 are arranged on the upper surface of each upper hinge 22 and lower hinge 22 in hinge power structure for amplifying system
Lower surface on.After each transverse bar tension and compression foil gauge 26 and hinge tension and compression foil gauge 27 connect and compose measuring bridge by wire
It is connected with the first static resistance deformeter 28, gathers the adaptability to changes on each transverse bar 21 and hinge 22 in real time.
It is quiet to foil gauge 29, connector radial strain piece 30 and second that output data acquisition analysis system includes connector shaft
State resistance instrument 31.Connector shaft is arranged on the connector body 3 in wellhead connector system to foil gauge 29, and connector is radially
Foil gauge 30 is arranged on the center ring 5 in wellhead connector system.Each connector shaft radially should to foil gauge 29 and connector
Become piece 30 and connected and composed by wire and is connected with the second static resistance deformeter 31 after measuring bridge, gather well head connection in real time
The adaptability to changes of connector body axially and radially in device system.
Based on the above-mentioned curved experimental apparatus for testing of wellhead connector big load tension and compression, the present invention also provides a kind of wellhead connector
The curved test experiments method of big load tension and compression, comprises the following steps：
1) wellhead connector system supplymentary fixture system, hinge power structure for amplifying system and hydraulic power are loaded respectively
System installs.
Installation method comprises the following steps：
1. lower I-steel shelf 10 is put on the ground, and will by the mounting hole on lower I-steel shelf fixed block 12
It is fixed on the ground.
2. two hydraulic cylinder bases 13 are placed in by the lower both sides of I-steel shelf 10 according to precalculated distance successively
On ground, and fixed on the ground by the mounting hole on cylinder bottom seat board 14.
3. each hydraulic cylinder 23 is placed in the cavity at the top of two hydraulic cylinder base 13, blending bolt is by hydraulic cylinder upper cover plate
15 are fixed on the top of hydraulic cylinder base 13.
4. between wellhead connector system is placed on into upper and lower I-steel shelf 8,10, top is solid by connecting welding plate 9
Fixed, bottom is fixed by installs fixture 11.
5. successively with pin by each transverse bar 21 and hydraulic cylinder 23, transverse bar 21 and upper lower hinge 22, upper hinge 22 and ear
Plate 19, underneath hinges 22 are connected with welding otic placode 20.
6. installing I-steel shelf 8 and two welds frid 16, during installation on upper 8 two lateral surfaces of I-steel shelf
Two bolts are filled respectively in each straight trough mouth, if had dislocation between welding frid 16 and straight trough mouth, it is necessary to move up and down welding
Frid 16 is adjusted, then successively welding the upper surface of frid 16 and the upper inner surface of I-steel shelf 8 between insert it is irregular
Cushion block 17 and regular cushion block 18.
2) input data acquisition analysis system and output data acquisition analysis system are separately mounted to hinge power amplification knot
On construction system and wellhead connector system.
Specifically, respectively on the upper surface of transverse bar 21, the upper surface of upper hinge 22 and the lower surface of underneath hinges 22 respectively
Foil gauge is pasted, each foil gauge after wire composition measuring bridge with the first static resistance deformeter 28 respectively by being connected；Well
Connector shaft on mouth connector system passes through wire to foil gauge 29 and connector radial strain piece 30 and forms measurement electricity respectively
It is connected after bridge with the second static resistance deformeter 31.According to default hydraulic control lines figure by the oil inlet of hydraulic cylinder, fuel-displaced
In mouth interface and the line attachment of hydraulic package containing pump.
3) according to the required load of requirement of experiment, and initial times of force amplifying coefficient of hinge power structure for amplifying system, obtain
To the output loads calculated value of hydraulic cylinder.
Times force amplifying coefficient of hinge power structure for amplifying system determines by hinge length and its with the angle of horizontal direction, this
First by being 84.3 with horizontal direction angle in invention°Hinge, times in hinge power structure for amplifying Systems Theory now
Force amplifying coefficient is 10, and according to the required load of requirement of experiment and initial times of force amplifying coefficient, the defeated of hydraulic cylinder is calculated
Go out load value.
4) hydraulic control system sends control signals to both sides hydraulic cylinder 23 according to obtained output loads calculated value, carries out
Tensile, compressive, bending load test is tested.
Before the curved test experiments of tension and compression are carried out, trial operation is carried out first, is sent control signals to by hydraulic control system
Both sides hydraulic cylinder, to less input hydraulic pressure signal, whether first, second static resistance deformeter 28 of observation, 31 indicating values change.
Afterwards, when carrying out drawing load test stabilization：Pass through hydraulic control system and controllor for step-by-step motor control left side hydraulic pressure
Cylinder moves right, right side hydraulic cylinder is to left movement；
When carrying out compressive load experiment：By hydraulic control system and controllor for step-by-step motor control left side hydraulic cylinder to the left
Motion, right side hydraulic cylinder move right；
When carrying out curved load test stabilization：Pass through hydraulic control system and controllor for step-by-step motor control left side and right side hydraulic pressure
Cylinder moves right simultaneously to left movement, or left side and right side hydraulic cylinder simultaneously.
5) calculated according to the output loads of input, the stress data that output data analysis acquisition system gathers and hydraulic cylinder
Value, obtains the various error amounts under the load；
The mechanical behavior parameter for the wellhead connector being related in the present invention mainly includes：Top and the bottom hinge adaptability to changes,
Read and record the transverse bar shown in the first static resistance deformeter 28 and the foil gauge on up/down portion hinge
The connector shaft shown on strain value and the second static resistance deformeter 31 shows to foil gauge 29 and connector radial strain piece 30
Value, foil gauge indicating value is observed on the hinge of top and the bottom to judge whether error；Transverse bar and up/down portion are calculated according to σ=E ε
The stress of hinge, the power being then subject to according to F=σ A calculating transverse bars and up/down portion hinge, calculates now force multiplication system times power
Whether coefficient is calculated value, and calculates force amplifying coefficient relative error；According to the output loads of hydraulic cylinder 23, the mechanics of materials is utilized
The deformation of theoretical calculation transverse bar, and the strain indicating value contrast of the transverse bar with being shown in the first static resistance deformeter are stretched, is calculated
The error of hydraulic cylinder output loads when it leakage be present.
6) on the premise of keeping hydraulic cylinder loading load constant, the hinge different from horizontal direction corner dimension is changed,
Repeat step 5), i.e., in the case where ensureing that input load is constant, change the amplification coefficient of force amplificatory structure and then change output
The size of load, to observe the mechanical behavior of wellhead connector and similar means under different output loads.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, connected mode and manufacture craft etc. are all
It can be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement, should not exclude
Outside protection scope of the present invention.
Claims (10)
- A kind of 1. curved experimental apparatus for testing of wellhead connector big load tension and compression, it is characterised in that：It includes auxiliary mould system, hinge Chain force structure for amplifying system, hydraulic power loading system, input data acquisition analysis system and output data acquisition analysis system；The auxiliary mould system is arranged on existing well head connector system；The hinge power structure for amplifying system with it is described auxiliary Help fixture system to be connected, output loads are provided for the auxiliary mould system；The hydraulic power loading system and the hinge Power structure for amplifying system is connected, and input load is provided for the hinge power structure for amplifying；The input data acquisition analysis system It is arranged in the hinge power structure for amplifying system, gathers the conduct of the adaptability to changes on the hinge power structure for amplifying and actually enter load Lotus；The output data acquisition analysis system is arranged in the wellhead connector system, gathers the wellhead connector system In adaptability to changes as reality output load.
- A kind of 2. curved experimental apparatus for testing of wellhead connector big load tension and compression as claimed in claim 1, it is characterised in that：It is described Auxiliary mould system includes upper I-steel shelf, upper I-steel shelf connection component, connection welding plate, lower I-steel shelf, lower work The sub- connection component of word steelframe, installs fixture, lower I-steel shelf fixed block and two are symmetricly set on the lower I-steel shelf The hydraulic cylinder support system of both sides；The upper I-steel shelf both ends are connected by the upper I-steel connection component with the hinge power structure for amplifying system, The upper I-steel bottom shelf is connected by the connection welding plate with the top of the wellhead connector system；The lower I-steel shelf both ends are connected by the lower I-steel connection component with the hinge power structure for amplifying system, The lower I-steel shelf top is connected by the installs fixture with the bottom of the wellhead connector system, the lower I-shaped The sub- bottom of steelframe is fixed on the ground by the lower I-steel shelf fixed block；The bottom of two hydraulic cylinder bases is fixedly installed on the lower i-beam frame by the cylinder bottom seat board respectively On the ground of sub- both sides, hydraulic cylinder upper cover plate described in the top difference bolt connection two of two hydraulic cylinder bases.
- A kind of 3. curved experimental apparatus for testing of wellhead connector big load tension and compression as claimed in claim 2, it is characterised in that：It is described Upper I-steel shelf connection component is provided with the welding frid of some necks, two irregular cushion blocks, some rules including two surfaces Cushion block and two otic placodes；Side of the two welding groove plate surfaces with neck and the upper I-steel shelf bolt connection, two institutes State irregular cushion block be plugged in the upper I-steel shelf lateral surface two straight trough mouths and it is described welding frid between, and it is described not The upper surface of regular cushion block matches with the upper I-steel shelf outer surface；Some regular cushion blocks are plugged on described Between other straight trough mouths of I-steel shelf and the welding frid；Two otic placodes are connected with the two welding groove crab bolts, Its surface opposite side is provided with the mounting hole for being connected with the hinge power structure for amplifying system；The lower I-steel shelf connection component includes two welding otic placodes, and the two welding otic placodes are respectively welded at the lower I-shaped The sub- both ends of steelframe, and the two welding otic placode surfaces are provided with some peaces for being connected with the hinge power structure for amplifying system Fill hole.
- A kind of 4. curved experimental apparatus for testing of wellhead connector big load tension and compression as claimed in claim 2, it is characterised in that：Two institutes Stating hydraulic cylinder support system includes a hydraulic cylinder base, the cylinder bottom seat board of an alterable height and a hydraulic pressure cylinder top head Plate；The bottom of two hydraulic cylinder bases is symmetricly set on the lower I-steel by the two cylinder bottom seat boards respectively On the ground of shelf both sides, hydraulic cylinder upper cover plate described in the top difference bolt connection two of two hydraulic cylinder bases, and two institutes Three cavities being provided with the top of hydraulic cylinder base for placing hydraulic cylinder are stated, the two hydraulic cylinder upper cover plate lower surfaces are provided with The groove to match with the cavity.
- A kind of 5. curved experimental apparatus for testing of wellhead connector big load tension and compression as claimed in claim 1, it is characterised in that：It is described Hinge power structure for amplifying system includes two symmetrically arranged hinge power structure for amplifying, and each hinge power structure for amplifying wraps Include three transverse bars being arranged side by side and two pairs of hinges being disposed between the transverse bar；Each transverse bar and two pairs of hinge end sections are by selling be hinged in one, and upper and lower hinge and each institute in two pairs of hinges The angle for stating transverse bar is identical；The other end of each transverse bar is hinged by small pin and the hydraulic power loading system, respectively Upper and lower I-steel shelf in middle pin and the auxiliary mould system is passed through respectively to the other end of upper and lower hinge in the hinge Otic placode and welding otic placode in component are hinged.
- A kind of 6. curved experimental apparatus for testing of wellhead connector big load tension and compression as claimed in claim 1, it is characterised in that：It is described Hydraulic power loading system includes some hydraulic cylinders and hydraulic control system；Each hydraulic cylinder is separately positioned in two hydraulic cylinder bases of the auxiliary mould system both sides, and each liquid One end of cylinder pressure is connected by small pin with each transverse bar in the hinge power structure for amplifying system；Other end end face is by the liquid Cylinder pressure base is fixed with hydraulic cylinder upper cover plate inner surface；The hydraulic control system includes controllor for step-by-step motor and hydraulic circuit components containing pump；The controllor for step-by-step motor leads to Cross signal wire to be connected with each hydraulic cylinder, for providing control signal for each hydraulic cylinder；The hydraulic circuit components containing pump connect Each hydraulic cylinder and hydraulic power unit are connect, for providing hydraulic pressure for each hydraulic cylinder.
- A kind of 7. curved experimental apparatus for testing of wellhead connector big load tension and compression as claimed in claim 1, it is characterised in that：It is described Input data acquisition analysis system includes some transverse bar tension and compression foil gauges, some hinge tension and compression foil gauges and the first static resistance Deformeter；The transverse bar tension and compression foil gauge is arranged on the upper surface of each transverse bar of the hinge power structure for amplifying system, institute State hinge tension and compression foil gauge be arranged on the hinge power structure for amplifying each pair of hinge upper hinge upper surface and lower hinge Lower surface；Each the transverse bar tension and compression foil gauge and hinge tension and compression foil gauge by wire connect and compose after measuring bridge with institute The connection of the first static resistance deformeter is stated, gathers the adaptability to changes on each transverse bar and hinge in real time.
- A kind of 8. curved experimental apparatus for testing of wellhead connector big load tension and compression as claimed in claim 1, it is characterised in that：It is described Output data acquisition analysis system includes connector shaft to foil gauge, connector radial strain piece and the second static resistance instrument；Institute State connector shaft to be arranged on the connector body in the wellhead connector system to foil gauge, the connector radial strain Piece is arranged on the center ring in the wellhead connector system；Each connector shaft is to foil gauge and connector radial strain Piece is connected and composed by wire and is connected with second static resistance deformeter after measuring bridge, is gathered the well head in real time and is connected Connect the adaptability to changes of device system.
- A kind of 9. curved test experiments side of wellhead connector big load tension and compression using such as any one of claim 1~8 described device Method, it is characterised in that comprise the following steps：1) it is by wellhead connector system and auxiliary mould system, hinge power structure for amplifying system and hydraulic power loading respectively System connects；2) input data acquisition analysis system and output data acquisition analysis system are separately mounted to hinge power structure for amplifying system On system and wellhead connector system；3) according to the required load of requirement of experiment, and initial times of force amplifying coefficient of hinge power structure for amplifying system, liquid is obtained The output loads calculated value of cylinder pressure；4) hydraulic control system sends control signals to both sides hydraulic cylinder according to obtained output loads calculated value, drawn, pressed, Curved load test experiment；5) stress data of acquisition system collection and the output loads calculated value of hydraulic cylinder are analyzed according to input, output data, Obtain the various error amounts under the load；6) on the premise of keeping hydraulic cylinder output loads constant, times force amplifying coefficient of hinge power structure for amplifying system is changed, Repeat step 4~5), observe the mechanical behavior of the well head connector system under different output loads.
- A kind of 10. curved test experiments method of wellhead connector big load tension and compression as claimed in claim 9, it is characterised in that：Institute State in step 4), hydraulic control system sends control signals to both sides hydraulic cylinder according to obtained output loads calculated value, carries out Tensile, compressive, bending load test experiment method be：When carrying out drawing load test stabilization：Transported to the right by hydraulic control system and controllor for step-by-step motor control left side hydraulic cylinder Dynamic, right side hydraulic cylinder is to left movement；When carrying out compressive load experiment：After trial operation, pass through hydraulic control system and controllor for step-by-step motor control left side hydraulic pressure Cylinder moves right to left movement, right side hydraulic cylinder；When carrying out curved load test stabilization：Transported to the left by hydraulic control system and controllor for step-by-step motor control left side hydraulic cylinder Dynamic, right side hydraulic cylinder moves right.
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| CN201710811757.2A CN107643218B (en) | 2017-09-11 | 2017-09-11 | Wellhead connector large-load tension-compression bending test experimental device and method |
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| CN201710811757.2A CN107643218B (en) | 2017-09-11 | 2017-09-11 | Wellhead connector large-load tension-compression bending test experimental device and method |
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| CN107643218B (en) | 2020-02-14 |
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