CN112824846A - Calibration device and calibration method for bolt stress of large-scale high-speed rotation equipment - Google Patents
Calibration device and calibration method for bolt stress of large-scale high-speed rotation equipment Download PDFInfo
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- CN112824846A CN112824846A CN201911149618.3A CN201911149618A CN112824846A CN 112824846 A CN112824846 A CN 112824846A CN 201911149618 A CN201911149618 A CN 201911149618A CN 112824846 A CN112824846 A CN 112824846A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000000523 sample Substances 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000007822 coupling agent Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 18
- 230000006378 damage Effects 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000001683 neutron diffraction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011202 physical detection method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The invention provides a calibration device and a calibration method for bolt stress of large-sized high-speed rotation equipment, belongs to the field of detection of the bolt stress of the large-sized high-speed rotation equipment, and particularly relates to the calibration device and the calibration method for the bolt stress of the large-sized high-speed rotation equipment. The problem of current bolt stress's the detection degree of difficulty big, cause the injury to part or measurement personnel is solved. The calibrating device comprises a steel pipe sleeve, a pressure sensor, an ultrasonic probe, an industrial personal computer and a nut, the calibrating bolt penetrates through the steel pipe sleeve, the head of the calibrating bolt is contacted with the steel pipe sleeve, the pressure sensor penetrates through the screw portion of the calibrating bolt and is contacted with one end of the steel pipe sleeve, the nut is in threaded connection with the screw portion of the calibrating bolt, the nut is in contact connection with the pressure sensor, the ultrasonic probe is connected with the tail end of the calibrating bolt, and the ultrasonic probe is connected with the industrial personal computer through a transmission line. The method is mainly used for calibrating parameters in the bolt stress detection of large-scale high-speed rotation equipment.
Description
Technical Field
The invention belongs to the field of bolt stress detection of large-scale high-speed rotation equipment, and particularly relates to a calibration device and a calibration method for bolt stress of large-scale high-speed rotation equipment.
Background
Large high-speed rotary equipment is generally greater than 3m in height, greater than 1.5m in diameter, and greater than 1.5 kilo-revolutions per minute, taking an aircraft engine as an example. The bolts used by the aeroengine need to bear higher temperature or pressure, so the bolts have high requirements on the stress of the bolts, and the detection on the stress is particularly important, and at present, the stress detection on the bolts mainly comprises three detection methods of no damage, micro damage, damage and the like. The method is a contact measurement method, and easily causes certain damage to the bolt in the measurement process, and can affect subsequent assembly and use to a certain extent, so that the method is basically not used any more. The nondestructive detection method is also called as physical detection method, and the method mainly comprises neutron diffraction method, X-ray diffraction method, magnetic method and ultrasonic method. Currently, an X-ray diffraction method is widely used, and the method is calculated by lattice strain measured by X-rays, but the method has high requirements on the surface of a material and poses certain threats to the personal health of detection personnel.
The stress detection by the ultrasonic method is based on the sound velocity propagation theory and the ultrasonic theory, the stress is detected by utilizing the relation between the stress and the sound velocity, the stress detection method has the advantages of rapidness, low cost, quantifiability, better resolution and permeability, no harm to human bodies and the like, can accurately evaluate the distribution state of the stress in different materials within a certain depth range, and is suitable for field detection.
Disclosure of Invention
The invention provides a calibration device and a calibration method for bolt stress of large-scale high-speed rotation equipment, aiming at solving the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a large-scale high-speed gyration is equipped calibration device of bolt stress, it includes steel pipe sleeve, pressure sensor, ultrasonic transducer, industrial computer and nut, treats that the calibration bolt passes the steel pipe sleeve, the head of treating the calibration bolt contacts with the steel pipe sleeve, pressure sensor passes the screw portion of calibration bolt and contacts with steel pipe sleeve one end, the nut with treat the screw portion threaded connection of calibration bolt, the nut links to each other with the pressure sensor contact, ultrasonic transducer with treat that the calibration bolt is terminal to link to each other, ultrasonic transducer passes through the transmission line and links to each other with the industrial computer.
Furthermore, a coupling agent is coated at the joint of the ultrasonic probe and the tail end of the bolt to be calibrated.
The invention also provides a method for calibrating the bolt stress of the large-scale high-speed rotation equipment, which comprises the following steps:
the method comprises the following steps: initializing parameters of a pressure sensor and an industrial personal computer;
step two: the nut is rotated through a wrench, so that the nut applies pressure to the pressure sensor, and the pressure of the pressure sensor at the moment and the time difference of ultrasonic wave propagation under the pressure are recorded;
step three: repeating the second step to obtain a plurality of groups of data;
step four: and performing curve fitting on the multiple groups of data, and solving the parameter K through the fitted curve.
Further, the solving formula of the parameter K is as follows:
in the formula: f is the pressure measured by the pressure sensor, S is the cross-sectional area of the bolt to be calibrated, delta t1Is the time difference of the ultrasonic wave propagation.
Further, curve fitting of the multiple sets of data was performed by MATLAB software.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problems of high detection difficulty and damage to parts or detection personnel in the conventional bolt stress detection. The invention lays a good foundation for subsequent stress detection by measuring and calibrating the parameter K, better solves the influence caused by contact measurement, has simple operation mode and lower cost, is easy to control and plays a certain guiding role for other related measurement foundations.
Drawings
FIG. 1 is a schematic structural view of a calibration device for bolt stress of large-scale high-speed rotation equipment according to the invention
FIG. 2 is a schematic diagram of a process for calibrating the stress parameters of a large-sized high-speed rotating equipment bolt according to the invention
1-steel pipe sleeve, 2-pressure sensor, 3-ultrasonic probe, 4-industrial personal computer, 5-bolt to be calibrated, 6-nut, 7-transmission line
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention.
The embodiment is described with reference to fig. 1-2, and the device for calibrating the bolt stress of the large-scale high-speed rotation equipment comprises a steel pipe sleeve 1, a pressure sensor 2, an ultrasonic probe 3, an industrial personal computer 4 and a nut 6, wherein a bolt 5 to be calibrated penetrates through the steel pipe sleeve 1, the head of the bolt 5 to be calibrated is in contact with the steel pipe sleeve 1, the pressure sensor 2 penetrates through the screw part of the bolt 5 to be calibrated and is in contact with one end of the steel pipe sleeve 1, the nut 6 is in threaded connection with the screw part of the bolt 5 to be calibrated, the nut 6 is in contact connection with the pressure sensor 2, the ultrasonic probe 3 is connected with the tail end of the bolt 5 to be calibrated, and the ultrasonic probe 3 is connected with the industrial personal computer 4 through.
In the embodiment, a bolt 5 to be calibrated penetrates through a steel pipe sleeve 1, a pressure sensor 2 is installed at the other end of the steel pipe sleeve 1, a nut 6 is in threaded connection with the bolt 5 to be calibrated, a coupling agent with a proper thickness is coated at the tail end of the bolt 5 to be calibrated, and an ultrasonic probe 3 is connected with the tail end of the bolt 5 to be calibrated and is correctly connected with an industrial personal computer 4 through a transmission line 7. And after the connection is finished, measuring data to finish the calibration of the parameter K.
The embodiment of the invention provides a method for calibrating bolt stress of large-scale high-speed rotation equipment, which comprises the following steps:
the method comprises the following steps: initializing parameters of the pressure sensor 2 and the industrial personal computer 4;
step two: the nut 6 is rotated through a wrench, so that the nut 6 applies pressure to the pressure sensor 2, and the pressure of the pressure sensor 2 at the moment and the time difference of ultrasonic wave propagation under the pressure are recorded;
step three: repeating the second step to obtain a plurality of groups of data;
step four: and performing curve fitting on the multiple groups of data, and solving the parameter K through the fitted curve.
The solving formula of the parameter K is as follows:
in the formula: f is the pressure measured by the pressure sensor (2), S is the cross-sectional area of the bolt (5) to be calibrated, delta t1Is the time difference of the ultrasonic wave propagation.
Curve fitting of multiple sets of data was achieved by MATLAB software. The parameter K obtained by calibration provides a foundation for subsequent stress detection, and the solving formula of the stress is as follows:
σ＝K*Δt2
in the formula: σ is the stress, K is the calculated parameter, Δ t2The time difference of ultrasonic wave propagation in stress detection.
The device and the method for calibrating the bolt stress of the large-scale high-speed rotating equipment provided by the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (5)
1. The utility model provides a large-scale high-speed calibration device that equipment bolt stress that revolves which characterized in that: the device comprises a steel pipe sleeve (1), a pressure sensor (2), an ultrasonic probe (3), an industrial personal computer (4) and a nut (6), wherein a calibration bolt (5) penetrates through the steel pipe sleeve (1), the head of the calibration bolt (5) is contacted with the steel pipe sleeve (1), the pressure sensor (2) penetrates through a screw portion of the calibration bolt (5) and is contacted with one end of the steel pipe sleeve (1), the nut (6) is in threaded connection with the screw portion of the calibration bolt (5), the nut (6) is contacted with the pressure sensor (2) and is connected with the tail end of the calibration bolt (5), and the ultrasonic probe (3) is connected with the industrial personal computer (4) through a transmission line (7).
2. The device for calibrating the bolt stress of the large-scale high-speed rotating equipment according to claim 1, is characterized in that: and a coupling agent is coated at the joint of the ultrasonic probe (3) and the tail end of the bolt (5) to be calibrated.
3. The calibration method of the large-scale high-speed rotation equipment bolt stress calibration device according to claim 1, is characterized in that: it comprises the following steps:
the method comprises the following steps: initializing parameters of the pressure sensor (2) and the industrial personal computer (4);
step two: the nut (6) is rotated through a wrench, so that the nut (6) applies pressure to the pressure sensor (2), and the pressure of the pressure sensor (2) at the moment and the time difference of ultrasonic wave propagation under the pressure are recorded;
step three: repeating the second step to obtain a plurality of groups of data;
step four: and performing curve fitting on the multiple groups of data, and solving the parameter K through the fitted curve.
4. The method for calibrating the bolt stress of the large-scale high-speed rotating equipment according to claim 3, wherein the method comprises the following steps: the solving formula of the parameter K is as follows:
in the formula: f is the pressure measured by the pressure sensor (2), S is the cross-sectional area of the bolt (5) to be calibrated, delta t1Is the time difference of the ultrasonic wave propagation.
5. The method for calibrating the bolt stress of the large-scale high-speed rotating equipment according to claim 3, wherein the method comprises the following steps: and the curve fitting of the multiple groups of data is realized by MATLAB software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149618.3A CN112824846A (en) | 2019-11-21 | 2019-11-21 | Calibration device and calibration method for bolt stress of large-scale high-speed rotation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149618.3A CN112824846A (en) | 2019-11-21 | 2019-11-21 | Calibration device and calibration method for bolt stress of large-scale high-speed rotation equipment |
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| CN112824846A true CN112824846A (en) | 2021-05-21 |
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| CN201911149618.3A Pending CN112824846A (en) | 2019-11-21 | 2019-11-21 | Calibration device and calibration method for bolt stress of large-scale high-speed rotation equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577394A (en) * | 2022-03-04 | 2022-06-03 | 北京理工大学 | Bolt fastening axial tensile stress detection calibration method and device |
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| CN205981526U (en) * | 2016-08-30 | 2017-02-22 | 青岛苏试海测检测技术有限公司 | Be used for bogie mounting panel bolt pretightning force testing arrangement |
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| CN108151947A (en) * | 2017-12-26 | 2018-06-12 | 北京理工大学 | The caliberating device and scaling method of a kind of pretightning force and elongation |
| CN209280192U (en) * | 2018-12-13 | 2019-08-20 | 深圳市德航智能技术有限公司 | A kind of frame-type bolt stress measuring device being convenient for changing |
-
2019
- 2019-11-21 CN CN201911149618.3A patent/CN112824846A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| CN103323170A (en) * | 2013-06-14 | 2013-09-25 | 内蒙古第一机械集团有限公司 | Pretightening force measuring system and method of bolt set connection |
| CN104075831A (en) * | 2014-07-11 | 2014-10-01 | 广西大学 | Pre-tightening force measurement device of high-strength bolt |
| CN106925987A (en) * | 2016-06-14 | 2017-07-07 | 北京普华亿能风电技术有限公司 | Tools for bolts ' pretension device and Bolt Screw Down Method on a kind of blower fan tower barrel |
| CN205981526U (en) * | 2016-08-30 | 2017-02-22 | 青岛苏试海测检测技术有限公司 | Be used for bogie mounting panel bolt pretightning force testing arrangement |
| CN108151947A (en) * | 2017-12-26 | 2018-06-12 | 北京理工大学 | The caliberating device and scaling method of a kind of pretightning force and elongation |
| CN209280192U (en) * | 2018-12-13 | 2019-08-20 | 深圳市德航智能技术有限公司 | A kind of frame-type bolt stress measuring device being convenient for changing |
Non-Patent Citations (2)
| Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577394A (en) * | 2022-03-04 | 2022-06-03 | 北京理工大学 | Bolt fastening axial tensile stress detection calibration method and device |
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Application publication date: 20210521 |