CN111537149A - Intelligent center rod telescopic experiment platform - Google Patents
Intelligent center rod telescopic experiment platform Download PDFInfo
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- CN111537149A CN111537149A CN202010512668.XA CN202010512668A CN111537149A CN 111537149 A CN111537149 A CN 111537149A CN 202010512668 A CN202010512668 A CN 202010512668A CN 111537149 A CN111537149 A CN 111537149A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 52
- 238000012360 testing method Methods 0.000 claims abstract description 61
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 8
- 239000011435 rock Substances 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 physical mechanics Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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Abstract
The invention relates to an intelligent central rod telescopic experiment platform which comprises a linear driving mechanism, a box body and a pressure experiment chamber, wherein the pressure experiment chamber is used for simulating a fidelity chamber of a fidelity corer, the pressure experiment chamber comprises a chamber body outer cylinder and a central rod, and the chamber body outer cylinder is arranged in the box body; the linear driving mechanism is installed outside the box body, an output part of the linear driving mechanism is connected with the central rod to drive the central rod to axially and linearly move, and a tension testing device is arranged between the output part and the central rod. According to the invention, the tension testing device is arranged between the driving mechanism and the central rod, so that the sealing effect of the pressure maintaining experiment chamber under different tension conditions can be verified; the quick insertion structure is simple to operate and reliable in performance, can realize quick butt joint of the central rod and the pull rod, and is beneficial to improving the working efficiency.
Description
Technical Field
The invention relates to the technical field of test systems of coring devices, in particular to an intelligent central rod telescopic experiment platform.
Background
The characteristics of deep rock such as physical mechanics, chemical biology and the like are closely related to the in-situ environmental conditions, the in-situ environmental loss in the coring process can cause the distortion and the irreversible change of the physicochemical property and the mechanical property of the rock core, and the key of the attack is how to obtain the in-situ rock core under the deep environmental conditions and carry out real-time loading test and analysis under the in-situ fidelity state.
At present, in-situ fidelity coring devices store rock cores in a core storage tube after the rock cores are drilled by a drilling tool, and realize the simulation of the in-situ environment of the rock cores through a pressure maintaining device, a heat preserving device and a moisture preserving device which are connected with the core storage tube. Before core drilling, the pressure maintaining capacity needs to be verified, so that a pressure resistance testing platform of the pressure maintaining cabin is produced.
The pressure resistance test platform of the pressure holding chamber generally comprises a pressure holding experiment chamber, a hydraulic system and the like, and the pressure holding performance of the pressure holding experiment chamber is verified by injecting high-pressure liquid into the pressure holding experiment chamber through the hydraulic system. The pressure maintaining test chamber has various structures, and can comprise a central rod, a flap valve, a core barrel and other parts like a fidelity coring device for verifying the action reliability of the central rod and the flap valve. The core barrel can be driven to move upwards by extracting the central rod, and the flap valve is automatically closed after the core barrel is lifted to a certain height.
The lower end of the central rod is provided with an outer step, the upper end of the core barrel is provided with an inner step matched with the outer step, and when the central rod is lifted upwards to be abutted against the outer step and the inner step, the central rod can drive the core barrel to move upwards synchronously. Meanwhile, due to the abutting of the outer step and the inner step, the sealing between the outer wall of the central rod and the inner wall of the core barrel at the abutting part can be realized. The sealing performance of the abutting part is related to the tensile force applied to the central rod. However, the existing pressure-resistant capability test platform for the pressure-holding chamber cannot verify the sealing effect of the pressure-holding experimental chamber under different tension conditions.
Disclosure of Invention
The invention aims to provide an intelligent central rod telescopic experiment platform which can verify the sealing effect of a pressure maintaining experiment cabin under different tension conditions.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the flexible experiment platform of intelligent well core rod, including sharp actuating mechanism, box and be used for simulating the pressure experiment cabin in fidelity corer fidelity cabin, the pressure experiment cabin is including cabin body urceolus and central rod, sharp actuating mechanism's output member with well core rod links to each other in order to drive well core rod axial rectilinear movement, output member with be equipped with the tensile test device between the well core rod.
Preferably, the linear driving mechanism is a cylinder, an oil cylinder or a linear motor.
Furthermore, an output part of the linear driving mechanism is connected with the central rod through a pull rod.
Furthermore, one end of the tension testing device is in threaded connection with an output part of the linear driving mechanism, and the other end of the tension testing device is in threaded connection with the pull rod.
Furthermore, the pull rod is connected with the center rod through a quick insertion structure.
Furthermore, the quick plug structure comprises a plug part, a jack part matched with the plug part and at least two spring buckles, wherein the plug part and the jack part are respectively connected with one of the pull rod and the central rod;
the plug part and the jack part can be clamped and fixed axially through the spring buckle.
Further, the spring buckle is arranged on the plug part; the spring buckle comprises a clamping block and a spring arranged in the radial direction;
the outer side wall of the plug part is provided with a groove for avoiding the clamping block, one end of the spring is fixedly connected with the groove wall of the groove, and the other end of the spring is fixedly connected with the clamping block; under the action of the spring, one part of the clamping block is positioned in the groove, and the other part of the clamping block protrudes out of the outer side wall of the plug part;
the outer side of the clamping block is an inclined plane, so that when the plug part is inserted into the jack part, the axial force of the jack part acting on the inclined plane can generate a radial component force, and the clamping block is further pushed to move radially until the clamping block is completely immersed into the groove;
the plug socket is characterized in that a plug hole is formed in the plug hole portion, an annular groove is coaxially formed in the hole wall of the plug hole, and the cross section of the annular groove is matched with an outer protruding portion, exposed out of the plug portion, of the clamping block.
Further, flexible experiment platform still includes the box in intelligent well core rod, cabin body urceolus is installed inside the box, sharp actuating mechanism installs outside the box, is equipped with the preformed hole that supplies the experiment pipeline to pass on the box.
Further, a liquid injection hole is formed in the side wall of the outer barrel of the cabin body, and a flap valve used for achieving sealing closing of the lower end of the pressure maintaining experiment cabin is installed at the lower end of the outer barrel of the cabin body; the flap valve comprises a valve seat, a valve clack and an elastic part, one end of the valve clack is movably connected with the outer side wall of the upper end of the valve seat, and the top of the valve seat is provided with a valve port sealing surface matched with the valve clack;
the core barrel is arranged in the outer barrel of the cabin body, and when the core barrel is positioned in the valve seat, the valve clack is opened by 90 degrees and is positioned between the core barrel and the outer barrel of the cabin body;
the lower end of the central rod extends into the core barrel, the lower end of the central rod is provided with an outer step, and the core barrel is provided with an inner step matched with the outer step;
when the central rod is lifted upwards by the linear driving mechanism until the outer step is abutted against the inner step, the lifting of the central rod can drive the core barrel to synchronously move upwards;
when the core barrel is lifted to a certain height, the valve clack returns to the top surface of the valve seat to be in sealing contact with the valve port sealing surface under the action of the elastic element and gravity;
when the central rod is lifted to the stroke end, the outer wall of the upper end of the core barrel is in sealing fit with the inner wall of the outer barrel of the cabin body.
Furthermore, a medium inlet and a medium outlet are arranged on the box body.
Further, the outer barrel of the cabin body comprises a first test piece, a second test piece and an intermediate connecting piece, wherein the first test piece is positioned above the second test piece, and the intermediate connecting piece is of a cylindrical structure;
the first test piece is connected with the second test piece through an intermediate connecting piece, and the liquid injection hole is formed in the wall of the intermediate connecting piece.
Compared with the prior art, the invention has the following beneficial effects:
1, a tension testing device is arranged between a driving mechanism and a central rod, so that the sealing effect of the pressure maintaining experiment chamber under different tension conditions can be verified;
2, the quick plug structure is simple to operate and reliable in performance, can realize quick butt joint of the central rod and the pull rod, and is beneficial to improving the working efficiency.
3, the upper end and the lower end of the pressure maintaining test chamber are connected by the middle connecting piece, so that the drilling on the pressure maintaining test chamber can be avoided, the pressure maintaining test chamber is prevented from being damaged, and the accuracy of the test can be improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure with the drawbar disengaged from the center rod;
FIG. 3 is an enlarged view of a portion of FIG. 2 at C;
FIG. 4 is a schematic view of the structure of the pull rod and the center rod when they are plugged together;
FIG. 5 is an enlarged view of a portion of FIG. 4 at D;
FIG. 6 is a schematic view of the configuration of the holding pressure experiment chamber when the center pole is not lifted;
FIG. 7 is an enlarged view of a portion of FIG. 6 at A;
FIG. 8 is a schematic view of the configuration of the holding pressure test chamber when the center pole is lifted to the end of travel;
fig. 9 is a partial enlarged view at B in fig. 8;
FIG. 10 is a cross-sectional view of the first embodiment;
FIG. 11 is a schematic view of the holding pressure test chamber when the outer cylinder is disassembled into an upper part and a lower part;
FIG. 12 is a schematic view of the construction of the intermediate link;
FIG. 13 is a schematic view of the pressure experiment chamber in the second embodiment;
FIG. 14 is a sectional view of the second embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
Detailed description of the invention
As shown in FIG. 1, the intelligent central rod telescopic experiment platform disclosed by the invention comprises a linear driving mechanism 8, a box body 81 and a pressure experiment chamber 10 for simulating a fidelity chamber of a fidelity corer, wherein the pressure experiment chamber 10 is arranged in the box body 81. The case 81 is an explosion-proof case. The pressure experiment chamber 10 comprises a chamber body outer cylinder and a central rod 2, a mounting seat 80 is arranged in a box body 81, and the chamber body outer cylinder is fixed on the mounting seat 80.
The linear driving mechanism 8 is installed outside the box body 81, an output part of the linear driving mechanism is connected with the central rod 2 to drive the central rod 2 to axially and linearly move, and a tension testing device 6 is arranged between the output part and the central rod 2. The tension testing device 6 can select a tension meter.
The linear driving mechanism 8 can be a cylinder, an oil cylinder or a linear motor. In the present embodiment, the output member of the linear drive mechanism is connected to the center rod 2 via a tie rod 7. Taking the linear driving mechanism 8 as an oil cylinder as an example, the cylinder body of the oil cylinder is fixedly connected with the outside of the box body 81, the output part of the oil cylinder is a piston rod 801, one end of the tension testing device 6 is in threaded connection with the piston rod 801, and the other end of the tension testing device 6 is in threaded connection with the pull rod 7.
In order to facilitate the connection of the pull rod 7 and the central rod 2, the pull rod 7 is connected with the central rod 2 through a quick insertion structure. As shown in fig. 2 to 5, the quick-connect structure in this embodiment includes a plug portion 24, a socket portion 71 adapted to the plug portion 24, and at least two spring latches 9, and the plug portion 24 and the socket portion 71 can be axially clamped and fixed by the spring latches 9.
The plug portion 24 and the receptacle portion 71 are connected to one of the tie rod 7 and the center rod 2, respectively. Connected here means that two separate parts are connected together or manufactured in one piece. Taking the example where the plug portion 24 is connected to the center rod 2 and the socket portion 71 is connected to the tie rod 7, the plug portion 24 may be integrally formed with the center rod 2, or the plug portion 24 and the center rod 2 may be two separate parts and then integrally connected. Of course, the plug portion 24 may be connected to the drawbar 7, and the socket portion 71 may be connected to the central rod 2.
In the present embodiment, the plug portion 24 is integrally formed with the center rod 2, and the insertion hole portion 71 is integrally formed with the tie rod 7. The spring buckle 9 is arranged on the plug part 24; the spring catch 9 includes a latch 91 and a radially disposed spring 92. The outer side wall of the plug part 24 is provided with a groove 25 for avoiding the fixture block 91, one end of the spring 92 is fixedly connected with the groove wall of the groove 25, and the other end of the spring 92 is fixedly connected with the fixture block 91; under the action of spring 92, a portion of latch 91 is located in recess 25, and another portion of latch 91 protrudes from the outer sidewall of plug portion 24.
The outer side of the clamping block 91 is provided with an inclined surface 93, so that when the plug part 24 is inserted into the insertion hole part 71, the insertion hole part 71 acts on the inclined surface 93 to generate a radial component force, and the clamping block 91 is further pushed to move radially to be completely immersed into the groove 25;
the socket portion 71 is provided with a socket 76, a hole wall 74 of the socket 76 is coaxially provided with an annular groove 75, and the cross section of the annular groove 75 is matched with the convex portion of the latch 91 exposed out of the plug portion 24. The cross-sectional shape of the annular groove 75 may be a triangle, the first groove wall 73 of the annular groove 75 fits the inclined surface 93 of the latch 91, and the second groove wall 74 of the annular groove 75 fits the inclined surface 93 of the latch 91.
For ease of insertion, the outer side wall of the plug portion 24 is an outer tapered surface 26, and the wall 74 of the receptacle 76 of the receptacle portion 71 is an inner tapered surface matching the outer tapered surface 26. The connection between the plug portion 24 and the central rod 2 forms a stop step 27 for abutting against the end surface 72 of the plug portion.
As shown in fig. 3 and 5, when the pull rod 7 and the central rod 2 need to be connected together, the pull rod 7 is butted with the central rod 2, the axial force of the insertion hole portion 71 acting on the inclined surface 93 generates a radial component force to push the fixture block 91 to gradually and radially move to be completely immersed in the groove 25, and when the annular groove 75 moves to be opposite to the fixture block 91, the fixture block 91 loses the action external force of the insertion hole portion 71 and radially moves to a part to be clamped in the annular groove 75 under the action of the spring 92; at this time, the end surface 72 of the plug portion also just abuts against the limit step 27 and is inserted in place.
Because the latch 91 is partially located in the groove 25 of the plug portion 24 and partially located in the annular groove 75 of the socket portion 71, the pull rod 7 and the central rod 2 are prevented from moving relative to each other in the axial direction, and the pull rod 7 and the central rod 2 are quickly clamped and fixed in the axial direction. The number of the spring buckles 9 is set according to the requirement, and can be set to be 2, 3 or more. To ensure a balanced force, the spring catches 9 are arranged at equal intervals in the circumferential direction.
The invention has simple operation, can realize the quick butt joint of the central rod and the pull rod in the outer cylinder only by axially moving the pull rod when in use, and can improve the working efficiency.
As shown in fig. 6-9, the pressure experiment chamber 10 in the present embodiment directly adopts a pressure maintaining experiment chamber, and the pressure maintaining experiment chamber includes an outer cylinder 1, a central rod 2, a core barrel 3 and a flap valve 5 for realizing the sealing closing of the lower end of the experiment chamber.
The pressure maintaining experiment chamber comprises an outer cylinder 1 which is a chamber body outer cylinder of the pressure experiment chamber 10. The outer cylinder 1 is formed by assembling a plurality of threaded sleeves and is used for simulating a drilling machine outer cylinder of the in-situ fidelity coring device. The flap valve 5 comprises a valve seat 51, a valve clack 52 and an elastic part 53, one end of the valve clack 52 is movably connected with the outer side wall of the upper end of the valve seat 51, and the top of the valve seat 51 is provided with a valve port sealing surface matched with the valve clack 52. The elastic member 53 is a spring or a torsion spring.
The lower end of the central rod 2 extends into the core barrel 3, the lower end of the central rod 2 is provided with an outer step 23, the upper end of the core barrel 3 is provided with an inner step 32 matched with the outer step 23, and when the central rod 2 is lifted upwards until the outer step 23 abuts against the inner step 32, the central rod 2 can drive the core barrel 3 to move upwards synchronously. Meanwhile, due to the abutting of the outer step 23 and the inner step 32, sealing can be formed between the outer wall of the central rod 2 and the inner wall of the core barrel 3 at the abutting part. The sealing properties of the abutment are related to the axial pressure between the core rod 2 and the core barrel 3. The axial pressure between the central rod 2 and the core barrel 3 is determined by the tension exerted on the central rod 2. The tensile force applied to the center rod 2 can be tested through the tensile force testing device 6, and then the sealing performance of the pressure experiment chamber 10 under different tensile force conditions can be verified.
As shown in fig. 6 and 7, in the initial state, the core barrel 3 is positioned at the lower end of the outer cylinder 1 and in the valve seat 51. When the core barrel 3 is positioned in the valve seat 51, the valve flap 52 is opened by 90 ° and is positioned between the core barrel 3 and the outer barrel 1; when the core barrel 3 is lifted upwards to a certain height by the central rod 2, the valve clack 52 returns to the top surface of the valve seat 51 under the action of the elastic element 53 and gravity to be in sealing contact with the valve port sealing surface, and the valve is closed.
As shown in fig. 8 and 9, when the central rod 2 continues to be lifted upwards to the end of the stroke, the outer wall of the upper end of the core barrel 3 is in sealing fit with the inner wall of the outer barrel 1. Two sealing rings 22 are arranged on the outer wall of the upper end of the core barrel 3 to realize the sealing with the barrel wall of the outer barrel 1. At this time, the outer wall of the central rod 2 and the inner wall of the core barrel 3 form a seal at the abutting part of the outer step 23 and the inner step 32, thereby completing the sealing of the upper end of the outer barrel 1. The lower end of the outer cylinder 1 is closed by a flap valve 5, so that a sealed space for storing a rock core is formed in the outer cylinder 1.
The inner wall of the outer barrel 1 is provided with a first limiting step 16 for axially limiting the core barrel 3, and when the upper end surface 21 of the core barrel abuts against the first limiting step 16, the center rod 2 is lifted to the stroke end point.
In order to increase the sealing specific pressure of the flap valve 5, the pressure maintaining experiment chamber further comprises a trigger mechanism 4, the trigger mechanism 4 comprises a trigger inner cylinder 41, a trigger block 42 and a trigger spring 43, a through hole is formed in the side wall of the trigger inner cylinder 41, the trigger block 42 is placed in the through hole, and a protruding portion 31 matched with the trigger block 42 is arranged on the outer side wall of the bottom of the core cylinder 3; the inner wall of the outer cylinder 1 is provided with an avoiding opening 15 matched with the trigger block 42, the trigger block 42 is positioned above the valve clack 52, and the avoiding opening 15 is positioned above the trigger block 42. The bottom of the avoiding opening 15 is provided with a guiding inclined plane which is convenient for the trigger block 42 to slide into the avoiding opening 15 from bottom to top and is also convenient for the trigger block 42 to slide out of the avoiding opening 15 from top to bottom.
The trigger spring 43 is sleeved outside the trigger inner cylinder 41, the outer wall of the trigger inner cylinder 41 is provided with a shoulder 44, the trigger spring 43 is compressed between the shoulder 44 and the step surface of the inner wall of the outer cylinder 1, and the trigger spring 43 is positioned above the trigger block 42;
when the core barrel 3 is positioned in the valve seat 51, the trigger inner barrel 41 is positioned between the core barrel 3 and the outer barrel 1, the lower end of the trigger inner barrel 41 is matched with a spigot of the valve seat 51, and the trigger block 42 protrudes out of the inner side wall of the trigger inner barrel 41;
when the core barrel 3 is lifted upwards to the first height, the convex part 31 of the core barrel 3 supports against the trigger block 42, so that the trigger inner barrel 41 can be driven to move upwards synchronously;
when the core barrel 3 is continuously lifted upwards to the second height, the trigger block 42 is pushed into the avoidance port 15 by the convex portion 31, so that the trigger block 42 avoids the convex portion 31;
when the core barrel 3 is lifted up to the bottom of the core barrel 3 to cross the avoidance port 15, the trigger block 42 loses the acting force of the core barrel 3, and the trigger inner cylinder 41 drives the trigger block 42 to fall back to press the closed valve clack 52 under the action of gravity and the trigger spring 43.
In order to perform the pressure resistance test, a high-pressure liquid needs to be injected into the holding pressure test chamber. As shown in fig. 10, a drill is required to drill a hole 101 in the side wall of the outer cylinder 1, and the hole 101 is used as a liquid injection hole to realize connection with a hydraulic pipeline. To facilitate connection to the fluid line, the holes 101 are threaded holes. Of course, the box 81 is provided with a first prepared hole 82 for the experiment pipeline to pass through.
In another embodiment, in order to realize the simulation of the in-situ environment temperature, a medium inlet 83 and a medium outlet 84 are provided on the box 81, and the pressure experiment chamber 10 can be heated or cooled by injecting a medium with a certain temperature into the box 1 through the box 81 so as to simulate the in-situ environment temperature.
Detailed description of the invention
In the first embodiment, the pressure-maintaining and compacting test chamber is connected with a hydraulic pipeline by drilling a hole in the cylinder wall, and the drilling of the drilling machine can damage the pressure-maintaining test chamber, so that the test result is not real.
As shown in fig. 12, 13 and 14, the outer cylinder of the capsule body in the present embodiment includes a first test piece 11, a second test piece 12 and an intermediate connecting member 13, the first test piece 11 is the upper end of the outer cylinder 1 of the holding pressure test chamber, the second test piece 12 is the lower end of the outer cylinder 1 of the holding pressure test chamber, and the intermediate connecting member 13 is a cylindrical structure; first trial spare 11 links to each other through middle connecting piece 13 with second trial spare 12, and liquid filling hole 14 is located on the section of thick bamboo wall of middle connecting piece 13 for external hydraulic source, thereby can avoid drilling on the trial spare, prevent to cause the harm to the trial spare, therefore the pressure environment of reducible trial spare, make the test result more true.
As shown in fig. 11, in the present embodiment, the outer cylinder 1 of the holding pressure test chamber is separated into a first test piece 11 and a second test piece 12 from the screw connection of the outer cylinder 1. The first limit step 16 is positioned on the first test piece 11, and the flap valve 5 and the trigger mechanism 4 are positioned on the second test piece 12. When the central rod 2 is lifted to the stroke end, the outer wall of the upper end of the core barrel 3 is in sealing fit with the inner wall of the first test piece 11.
One end of the intermediate connecting piece 13 is an internal thread, and the other end is an external thread, so as to realize the threaded connection with the first test piece 11 and the second test piece 12. And sealing rings are arranged between the middle connecting piece 13 and the first test piece 11 and the second test piece 12, and the sealing performance can be improved by the thread sealing and the sealing of the sealing rings.
This embodiment utilizes the intermediate junction spare to link up the upper end and the lower extreme of pressurize experiment cabin, can avoid boring on the pressurize test cabin, prevents to cause the harm to the pressurize test cabin, can improve the accuracy of experiment.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.
Claims (10)
1. The utility model provides a flexible experiment platform of intelligent well core rod, is including the pressure experiment cabin that is used for simulating fidelity corer fidelity cabin, and the pressure experiment cabin includes cabin body urceolus and central rod, its characterized in that: the device also comprises a linear driving mechanism, an output part of the linear driving mechanism is connected with the central rod to drive the central rod to axially and linearly move, and a tension testing device is arranged between the output part and the central rod.
2. The intelligent central rod telescoping experiment platform of claim 1, wherein: the linear driving mechanism is a cylinder, an oil cylinder or a linear motor.
3. The intelligent central rod telescoping experiment platform of claim 1, wherein: the output part of the linear driving mechanism is connected with the central rod through a pull rod.
4. The intelligent central rod telescoping experiment platform of claim 3, wherein: one end of the tension testing device is in threaded connection with an output part of the linear driving mechanism, and the other end of the tension testing device is in threaded connection with the pull rod.
5. The intelligent central rod telescoping experiment platform of claim 3 or 4, wherein: the pull rod is connected with the center rod through a quick insertion structure.
6. The intelligent central rod telescoping experiment platform of claim 5, wherein: the quick plug-in structure comprises a plug part, a jack part matched with the plug part and at least two spring buckles, wherein the plug part and the jack part are respectively connected with one of the pull rod and the central rod;
the plug part and the jack part can be clamped and fixed axially through the spring buckle.
7. The intelligent central rod telescoping experiment platform of claim 6, wherein: the spring buckle is arranged on the plug part; the spring buckle comprises a clamping block and a spring arranged in the radial direction;
the outer side wall of the plug part is provided with a groove for avoiding the clamping block, one end of the spring is fixedly connected with the groove wall of the groove, and the other end of the spring is fixedly connected with the clamping block; under the action of the spring, one part of the clamping block is positioned in the groove, and the other part of the clamping block protrudes out of the outer side wall of the plug part;
the outer side of the clamping block is an inclined plane, so that when the plug part is inserted into the jack part, the axial force of the jack part acting on the inclined plane can generate a radial component force, and the clamping block is further pushed to move radially until the clamping block is completely immersed into the groove;
the plug socket is characterized in that a plug hole is formed in the plug hole portion, an annular groove is coaxially formed in the hole wall of the plug hole, and the cross section of the annular groove is matched with an outer protruding portion, exposed out of the plug portion, of the clamping block.
8. The intelligent central rod telescoping experiment platform of claim 1, wherein: the outer barrel of the cabin body is installed inside the box body, the linear driving mechanism is installed outside the box body, and a preformed hole for an experiment pipeline to penetrate is formed in the box body.
9. The intelligent central rod telescoping experiment platform of claim 1 or 8, wherein: the side wall of the outer barrel of the cabin body is provided with a liquid injection hole, and the lower end of the outer barrel of the cabin body is provided with a flap valve for realizing the sealing and closing of the lower end of the pressure maintaining experiment cabin; the flap valve comprises a valve seat, a valve clack and an elastic part, one end of the valve clack is movably connected with the outer side wall of the upper end of the valve seat, and the top of the valve seat is provided with a valve port sealing surface matched with the valve clack;
the core barrel is arranged in the outer barrel of the cabin body, and when the core barrel is positioned in the valve seat, the valve clack is opened by 90 degrees and is positioned between the core barrel and the outer barrel of the cabin body;
the lower end of the central rod extends into the core barrel, the lower end of the central rod is provided with an outer step, and the core barrel is provided with an inner step matched with the outer step;
when the central rod is lifted upwards by the linear driving mechanism until the outer step is abutted against the inner step, the lifting of the central rod can drive the core barrel to synchronously move upwards;
when the core barrel is lifted to a certain height, the valve clack returns to the top surface of the valve seat to be in sealing contact with the valve port sealing surface under the action of the elastic element and gravity;
when the central rod is lifted to the stroke end, the outer wall of the upper end of the core barrel is in sealing fit with the inner wall of the outer barrel of the cabin body.
10. The intelligent central rod telescoping experiment platform of claim 9, wherein: the outer barrel of the cabin body comprises a first test piece, a second test piece and an intermediate connecting piece, wherein the first test piece is positioned above the second test piece, and the intermediate connecting piece is of a cylindrical structure;
the first test piece is connected with the second test piece through an intermediate connecting piece, and the liquid injection hole is formed in the wall of the intermediate connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512668.XA CN111537149B (en) | 2020-06-08 | 2020-06-08 | Intelligent center rod telescopic experiment platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010512668.XA CN111537149B (en) | 2020-06-08 | 2020-06-08 | Intelligent center rod telescopic experiment platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111537149A true CN111537149A (en) | 2020-08-14 |
| CN111537149B CN111537149B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010512668.XA Active CN111537149B (en) | 2020-06-08 | 2020-06-08 | Intelligent center rod telescopic experiment platform |
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