CN113514355A - Resonance bending fatigue testing machine for oil-gas pipe column - Google Patents
Resonance bending fatigue testing machine for oil-gas pipe column Download PDFInfo
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- CN113514355A CN113514355A CN202110439288.2A CN202110439288A CN113514355A CN 113514355 A CN113514355 A CN 113514355A CN 202110439288 A CN202110439288 A CN 202110439288A CN 113514355 A CN113514355 A CN 113514355A
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 25
- 238000005452 bending Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 67
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000005284 excitation Effects 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a resonance bending fatigue testing machine for an oil-gas pipe column, which belongs to the technical field of fatigue durability tests of mechanical parts and mainly comprises a supporting system, a transmission system and a monitoring system. The movable support design is adopted, the spatial position of the support structure can be moved according to the size of a test piece, and the vibration reduction function is realized through the tire; the supporting structure of the testing machine adopts an open-close type design, can meet the testing requirements of test pieces with different sizes, and has good applicability; the transmission part of the testing machine can adapt to the resonance frequency of the test piece by changing the rotating speed of the motor, and simultaneously apply different excitation loads by adjusting the mass of the additional mass block, so that the frequency modulation and amplitude modulation of the excitation loads can be simultaneously realized, the excitation load requirements of the resonance bending tests of the test pieces with different sizes are met, and the testing machine has stronger universality; the invention simplifies the structure of the testing machine, improves the applicability and can be widely applied to the fatigue tests of various test pieces.
Description
Technical Field
The invention relates to a resonance bending fatigue testing machine for an oil-gas tubular column, in particular to a resonance bending fatigue testing device for testing the fatigue durability of an oil-gas drilling tubular column.
Background
The oil-gas pipe column is key equipment for oil-gas drilling and production, and mainly comprises a marine riser, a drill rod, a vertical pipe, a casing pipe, a wellhead and the like. In actual work, the oil-gas pipe column is influenced by dynamic loads such as operation loads, environmental loads and the like, and fatigue failure accidents are easy to happen. In order to accurately forecast and improve the fatigue life of the oil-gas pipe column and ensure the operation safety, the fatigue durability test of the oil-gas pipe column needs to be carried out, and the fatigue performance S-N curve of the oil-gas pipe column is determined. The fatigue test method mainly comprises a stretching method, a four-point bending method, a rotary bending method, a resonance bending method and the like, wherein the resonance bending fatigue test method has the advantages of high efficiency, low energy consumption and the like, and has better application prospect in the fatigue test of the oil-gas pipe column, particularly a large oil-gas pipe column. Therefore, the resonance bending fatigue testing machine for the oil-gas pipe column is provided, is suitable for oil-gas pipe column resonance bending fatigue tests of different sizes, and provides effective test equipment for the oil-gas pipe column fatigue tests.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a resonance bending fatigue testing machine for an oil-gas pipe column.
The invention is realized by the following technical scheme: the utility model provides a resonance bending fatigue testing machine for oil gas tubular column which characterized in that: the device comprises a supporting system, a transmission system, a monitoring system, a test piece and a protective cover.
The utility model provides a resonance bending fatigue test machine for oil gas tubular column, braced system with transmission system mutual independence, oil gas tubular column resonance fatigue test machine turns left from the right side and is transmission system and braced system in proper order, the test piece is fixed on the braced system, monitoring system installs in the middle part position, when experimental, places test piece, transmission system and braced system whole in the protection casing, guarantee experimental security.
The supporting system comprises a supporting tire, a bottom plate, a connecting shaft, a locking support, a supporting structure and tire shafts, and plays roles of supporting, fixing and buffering in the resonance process of the test piece, wherein the two tire shafts are respectively fixed at two ends of the bottom plate, the tire is symmetrically fixed on the tire shafts, and the supporting of the supporting system is realized. The bottom plate is opened there is the hole of equidistance, the locking support passes through the bolt and can installs on the different hole sites of bottom plate, in order to realize the step regulation of distance between the locking support, bearing structure includes backup pad and connecting axle, through the connecting axle with the locking support is articulated, bearing structure is in symmetrical installation on the bottom plate.
The transmission system comprises a motor, a coupler, an eccentric mass block, an additional mass block, a flange plate, a three-jaw chuck, a bearing, a transmission shaft, a static load chamber and a connecting key, and plays a role in applying power drive to the test piece. The motor passes through the shaft coupling with the transmission shaft links to each other, two eccentric quality pieces pass through the hookup key cooperation is installed on the transmission shaft, the hookup key is opened has the keyway of certain angle in interval to realize the cooperation of the different contained angles of two eccentric quality pieces to adjust centrifugal force, realize the effective control to experimental vibration. The transmission shaft with the bearing internal diameter interference is connected, the ring flange with the bearing external diameter interference is connected, three-jaw chuck presss from both sides tight test piece one end, with the ring flange passes through the bolt fastening, will the motor with the excitation load transmission that eccentric mass piece cooperation produced gives the test piece, three-jaw chuck steps up the test piece for mode nodal point position when changing the test piece resonance for the test piece tip is kept away from to nodal point position, the better support of being convenient for, the static load room is installed the test piece left end.
The monitoring system comprises a strain acquisition system and a through crack monitoring and controlling system.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the movable support design is adopted, so that a large-mass and large-size test piece can be supported, the position of the support system can be changed according to the size of the test piece, and the movable support system has better applicability and flexibility; 2. the invention can adapt to the resonance frequency of the test piece by changing the rotating speed of the motor, and simultaneously, by adjusting the mass of the additional mass block and applying different excitation loads, the frequency modulation and amplitude modulation of the excitation loads can be simultaneously realized, the excitation load requirements of the resonance bending tests of the test pieces with different sizes are met, and the invention has stronger universality; 3. the supporting system designed by the invention can ensure that the circle centers of the test pieces are positioned on a straight line when supporting size adjustment is carried out, and the accuracy of an experimental result is ensured; 4. the mechanical deformation mechanism is simple in structure, high in stability and reliability and capable of being widely applied to fatigue tests of various test pieces.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the protective cover of the present invention.
FIG. 3 is a schematic representation of the transmission system of the present invention.
FIG. 4 is a schematic view of the support system of the present invention.
Fig. 5 is a top view of the support system of the present invention.
FIG. 6 is a schematic view of an eccentric mass of the present invention.
In the figure, 1, a motor, 2, a coupler, 3, a tire, 4, a bottom plate, 5, a sensor, 6, a test piece, 7, a supporting structure, 8, a static load chamber, 9, a protective cover, 10, a three-jaw chuck, 11, a flange plate, 12, a bearing, 13, an eccentric mass block, 14, an additional mass block, 15, a transmission shaft, 16, a supporting structure and 17, a locking support are arranged.
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
As shown in figure 1, a resonance bending fatigue testing machine for an oil-gas pipe column sequentially comprises a transmission system and a supporting system from right to left, a test piece 6 is fixed on a supporting structure 7, a static load chamber 8 is installed at the left end of the test piece 6 and used for changing the position of a wave node of the test piece, and a monitoring system is installed at the middle position.
As shown in fig. 1 and 3, the motor 1 is fixed on a frame, the coupling 2 connects the transmission shaft 15 with the motor 1, the eccentric mass 13 is matched with the transmission shaft 15 through a key, the additional mass block 14 is fixed on the eccentric mass block 13 through a bolt, the bearing 12 is in interference fit with the eccentric mass block 13, the inner diameter of the flange plate 11 is in interference fit with the outer diameter of the bearing 12, the three-rotation chuck 10 is fixed with the flange plate 11 through a bolt, the three-jaw chuck 10 clamps the test piece 6 and is connected with the transmission system, and the transmission system changes the excitation load applied to the test piece 6 by changing the mass 14 of the additional mass block and the rotating speed of the motor 1.
As shown in fig. 1, 4 and 5, the tires 3 are fixed at two ends of the bottom of the base plate 4, the locking supports 17 are fixed at the positions of the holes formed in the base plate 4 through bolts, the supporting structure 16 is hinged to the locking supports 17 through connecting shafts, the mounting positions of the locking supports 17 on the base plate 4 are changed, different opening and closing angles are realized, and therefore test pieces with different sizes are supported.
As shown in fig. 6, the eccentric mass 13 has a rectangular block structure, and a connecting hole for mounting the additional mass 14 is formed at the lower end thereof.
In the experiment process, the test piece 6, the transmission device and the supporting device can be all placed in the protective cover 9, so that the experiment safety is ensured.
The method has the beneficial effects that:
the resonance bending fatigue testing machine for the oil-gas pipe column is provided, adopts a movable support design, can support a large-mass and large-size test piece, can change the position of a support system according to the size of the test piece, and has better applicability and flexibility; the invention can adapt to the resonance frequency of the test piece by changing the rotating speed of the motor, and simultaneously, by adjusting the mass of the additional mass block and applying different excitation loads, the frequency modulation and amplitude modulation of the excitation loads can be simultaneously realized, the excitation load requirements of the resonance bending tests of the test pieces with different sizes are met, and the invention has stronger universality; the supporting system designed by the invention can ensure that the circle centers of the test pieces are positioned on a straight line when supporting size adjustment is carried out, and the accuracy of an experimental result is ensured; the mechanical deformation mechanism is simple in structure, high in stability and reliability and capable of being widely applied to fatigue tests of various test pieces.
The present invention is not limited to the above embodiments, and various other equivalent modifications, substitutions and alterations can be made without departing from the basic technical concept of the invention according to the common technical knowledge and conventional means in the field.
Claims (4)
1. The utility model provides a resonance bending fatigue testing machine for oil gas tubular column which characterized in that: it includes braced system, transmission system, monitoring system, test piece, protection casing, braced system with transmission system mutual independence, oil gas tubular column resonance bending fatigue testing machine turns left from the right side and is transmission system and braced system in proper order, the test piece is fixed on the braced system, monitoring system installs the test piece middle part.
When the test is carried out, the test piece, the transmission system and the supporting system are all placed in the protective cover, so that the safety of the test is ensured.
The supporting system comprises a supporting tire, a bottom plate, a connecting shaft, a locking support, a supporting structure and tire shafts, and plays roles of supporting, fixing and buffering in the resonance process of the test piece, wherein the two tire shafts are respectively fixed at two ends of the bottom plate, the tire is symmetrically fixed on the tire shafts, and the supporting of the supporting system is realized. The bottom plate is opened there is the equidistance hole, the locking support passes through the bolt and can installs on the different hole sites of bottom plate, in order to realize there is the level regulation of distance between the lock locking support, bearing structure includes backup pad and connecting axle, through the connecting axle with the locking support is articulated, bearing structure is in symmetrical installation on the bottom plate, wholly is "M" shape.
The transmission system comprises a motor, a coupler, an eccentric mass block, an additional mass block, a flange plate, a three-jaw chuck, a bearing, a transmission shaft, a static load chamber and a connecting key, and plays a role in applying power drive to the test piece. The motor passes through the shaft coupling with the transmission shaft links to each other, two eccentric quality pieces pass through the hookup key cooperation is installed on the transmission shaft, the hookup key is opened has the keyway of certain angle in interval to realize the cooperation of the different contained angles of two eccentric quality pieces to adjust centrifugal force, realize the effective control to experimental vibration. The transmission shaft with the bearing internal diameter interference is connected, the ring flange with the bearing external diameter interference is connected, three-jaw chuck presss from both sides tight test piece one end, with the ring flange passes through the bolt fastening, will the motor with the excitation load transmission that eccentric mass piece cooperation produced gives the test piece, three-jaw chuck steps up the test piece for mode nodal point position when changing the test piece resonance for the test piece tip is kept away from to nodal point position, the better support of being convenient for, the static load room is installed the test piece left end.
The monitoring system comprises a strain acquisition system and a through crack monitoring and controlling system.
2. The resonance bending fatigue testing machine for oil and gas pipe columns according to claim 1, wherein the tire can rotate to realize the movement of the supporting system, and the tire can simultaneously realize the vibration damping effect, reduce the influence on the test result due to vibration, and simultaneously avoid the accidents caused by the vibration of the test piece.
3. The resonance bending fatigue testing machine for the oil-gas pipe column is characterized in that the locking support is matched with the hole in the bottom plate to realize the adjustment of the opening and closing angle of the supporting structure, so that the supporting system meets the use requirements of test pieces with different sizes; meanwhile, the M-shaped structure adopted by the design of the supporting system also ensures that the circle centers of different test pieces and the axis of the motor are always positioned on the same level.
4. The resonance bending fatigue testing machine for oil and gas pipe strings as claimed in claim 1, wherein the eccentric mass block is provided with two holes at the lower end, the additional mass block is mounted at the position of the eccentric mass block hole through a bolt, and different excitation loads can be applied to the test piece by replacing different mass blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110439288.2A CN113514355A (en) | 2021-04-23 | 2021-04-23 | Resonance bending fatigue testing machine for oil-gas pipe column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110439288.2A CN113514355A (en) | 2021-04-23 | 2021-04-23 | Resonance bending fatigue testing machine for oil-gas pipe column |
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| Publication Number | Publication Date |
|---|---|
| CN113514355A true CN113514355A (en) | 2021-10-19 |
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| CN202110439288.2A Pending CN113514355A (en) | 2021-04-23 | 2021-04-23 | Resonance bending fatigue testing machine for oil-gas pipe column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061671A (en) * | 2021-11-12 | 2022-02-18 | 常州双环热工仪表有限公司 | Vortex street flowmeter |
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| CN107036801A (en) * | 2017-06-09 | 2017-08-11 | 上海理工大学 | Experiment turbine rotor test specimen bogey |
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| CN110057700A (en) * | 2019-05-06 | 2019-07-26 | 北京工业大学 | A kind of bending/curved drawing fretting fatigue and fretting wear pilot system and test method |
| CN211740855U (en) * | 2020-01-17 | 2020-10-23 | 天津益普科技发展有限公司 | Full-size marine pipeline resonance rotary bending fatigue testing machine |
| CN112595613A (en) * | 2020-11-24 | 2021-04-02 | 江苏徐工工程机械研究院有限公司 | Device and method for testing bending fatigue performance of coating of piston rod of hydraulic cylinder |
-
2021
- 2021-04-23 CN CN202110439288.2A patent/CN113514355A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592195A (en) * | 2013-11-27 | 2014-02-19 | 西南交通大学 | Machine and method for slight impact wear test on nuclear power station steam generator heat-transfer pipe |
| CN107054501A (en) * | 2017-03-10 | 2017-08-18 | 上海大学 | A kind of adaptive dolly of unmanned complex road surface based on parallel institution |
| CN107036801A (en) * | 2017-06-09 | 2017-08-11 | 上海理工大学 | Experiment turbine rotor test specimen bogey |
| CN108362586A (en) * | 2018-03-01 | 2018-08-03 | 吉林大学 | Resonate fatigue bending machine |
| CN109990999A (en) * | 2019-04-30 | 2019-07-09 | 吉林大学 | Underneath type drives piezoelectricity HF fatigue testing machine |
| CN110057700A (en) * | 2019-05-06 | 2019-07-26 | 北京工业大学 | A kind of bending/curved drawing fretting fatigue and fretting wear pilot system and test method |
| CN211740855U (en) * | 2020-01-17 | 2020-10-23 | 天津益普科技发展有限公司 | Full-size marine pipeline resonance rotary bending fatigue testing machine |
| CN112595613A (en) * | 2020-11-24 | 2021-04-02 | 江苏徐工工程机械研究院有限公司 | Device and method for testing bending fatigue performance of coating of piston rod of hydraulic cylinder |
Non-Patent Citations (1)
| Title |
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| 刘秀全等: "油气管柱共振弯曲疲劳实验平台研制" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061671A (en) * | 2021-11-12 | 2022-02-18 | 常州双环热工仪表有限公司 | Vortex street flowmeter |
| CN114061671B (en) * | 2021-11-12 | 2022-08-09 | 常州双环热工仪表有限公司 | Vortex street flowmeter |
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Application publication date: 20211019 |