CN106248488A - Kingbolt stretching and measurement technique - Google Patents
Kingbolt stretching and measurement technique Download PDFInfo
- Publication number
- CN106248488A CN106248488A CN201610574431.8A CN201610574431A CN106248488A CN 106248488 A CN106248488 A CN 106248488A CN 201610574431 A CN201610574431 A CN 201610574431A CN 106248488 A CN106248488 A CN 106248488A
- Authority
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- China
- Prior art keywords
- kingbolt
- hydraulic oil
- oil pump
- stretching
- measurement
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000691 measurement method Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 239000010720 hydraulic oil Substances 0.000 claims description 24
- 239000003921 oil Substances 0.000 claims description 4
- 238000010338 mechanical breakdown Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- 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
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- 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
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of kingbolt stretching and measure technique, ensure that every kingbolt has identical deflection in drawing process, monitoring kingbolt is in the change of drawing process constantly, bolt is measured by placing one at the inner chamber of kingbolt, measurement apparatus is installed at the top of kingbolt, kingbolt measures bolt height during being stretched to be increased, the registration of measurement apparatus changes, the straightforward change embodying kingbolt elongation, this process solves kingbolt problem such as pump cover unbalance stress even kingbolt deflection difficulty measurement in drawing process, the fields of measurement such as bearing base part axial gap can also be applied to.
Description
Technical field: the present invention relates to a kind of kingbolt stretching and measure technique.
Background technology: kingbolt is main reactor pump core one-level parts, when main pump is properly functioning, in pump case
Water temperature is up to 290 degrees Celsius, and pressure is raised to 15Mpa, and seal and the water conservancy parts such as stator, insulator in pump case are high at high temperature
Pressure is not subjected to displacement and thermal expansion, mainly due to kingbolt by connecting pump case and pump cover thus to Ministries of Water Resources such as seals
Part positions, and kingbolt almost bears whole system pressures.The quantity of kingbolt comes to 16, if every kingbolt
Pretightning force different, the levelness of pump cover will be affected, thus affect the running orbit in the axle center of whole main pump, cause main pump
Vibrations.Pump cover to be ensured and closed chamber uniform force, it is necessary to 16 kingbolts of midplane extrusion, to guarantee each in drawing process
Pretightning force suffered by kingbolt is identical, is on the one hand the reading being carried out pressure by the Pressure gauge of stretching cylinder, is on the other hand exactly
Measure the deformation of kingbolt.
For stretching and the measurement of deformation of kingbolt, common process is that kingbolt carries out packet stretching, a hydraulic pressure
By the Pressure gauge on hydraulic oil pump, 4 bolt tensioning jacks of oil pump control, judge whether kingbolt reaches specified pretightning force, reach
The directly measurement of depth indicator or ruler is used after pretightning force.Process above method is to measure after the stretch, constant can guarantee that 4
Kingbolt pretightning force in drawing process is identical, elongation is identical and pump cover uniform force.If stretching finds main spiral shell after terminating
Bolt deflection is different, again can only stretch, can cause kingbolt fatigue wear after removing, and measuring method is single, inefficiency, and
And accurate not, if several kingbolts are measured simultaneously, need many individuals to carry out, it is impossible to reach to monitor main spiral shell constantly simultaneously
The purpose of bolt deformation.Cannot judge whether kingbolt reaches yield strength after producing plastic deformation, kingbolt can not be controlled
Fatigue wear, according to case above, it is necessary to formulate reasonably stretching and distortion measurement technique, and the use that can meet kingbolt is wanted
Ask.
Summary of the invention: it is an object of the present invention to provide a kind of kingbolt stretching and measure technique, working as at kingbolt drawing process
Middle guarantee pump cover uniform force, in the case of ensureing less than specified pretightning force, 16 symmetrical kingbolt phases to be had
Same deformation, by installing measurement apparatus, it is ensured that kingbolt deformation in drawing process is measured constantly, and at double on kingbolt
Improve work efficiency.Technical solution of the present invention is: a kind of kingbolt stretching and measurement technique, hydraulic oil pump promotes bolt tensioning jack
Acting, after hydraulic oil pump reaches certain pressure value, kingbolt starts to deform upon, the elongation of kingbolt and hydraulic oil pump
Pressure is proportional, and while kingbolt deforms upon, the measurement bolt height of its intracavity changes, and is now arranged on survey
Mechanical amesdial pointer on amount sleeve changes, and measures numerical value by reading, intuitively reflects the deflection of kingbolt, on
The method of stating comprises the following steps:
1) kingbolt (2) is screwed in pump case (1) through pump cover (3)；
2) nut (4) is installed on kingbolt (2)；
3) will measure sleeve (9), machinery amesdial (8) is placed on kingbolt, then fastens with threaded (10)；
4) bolt tensioning jack (7) is fixed on kingbolt；
5) hydraulic oil pump (6) is connected on bolt tensioning jack (7)；
6) hydraulic oil pump (6) is pressurizeed, record oil pressure value and tensile elongation；
7), after hydraulic oil pump (6) reaches rated pressure, mother nut (4) is tightened；
8) pressure of hydraulic oil pump (6) is laid down；
9) repeating next group stretching, method is ibid.
The present invention changes the measurement technique of the kingbolt tensile deformation of routine, in the situation less than specified pretightning force
Under, 16 symmetrical kingbolts have identical deformation.Make pump cover uniform force in the middle of kingbolt drawing process.Pass through
Installing measurement apparatus on kingbolt, the deformation of kingbolt self is directly passed to measure bolt, measures the change of bolt height,
Being embodied directly on machinery amesdial, reading is the most eye-catching, it is ensured that kingbolt deformation in drawing process is the most monitored, this
Bright measurement is stably accurate, and certainty of measurement is high, can measure the deflection of 4 kingbolts and form reference each other simultaneously, carrying at double
High work efficiency.Use the stretching of this kingbolt and the measurement technique of deformation, by the measurement of kingbolt deformation can be calculated
And judge whether kingbolt reaches yield strength after producing plastic deformation, there is important meaning for controlling the fatigue wear of kingbolt
Justice.Ensure that the service life of kingbolt.This technique is being applied in the installation of multiple stage product, and practical function is good
Good, reach the Expected Results that core main pump is installed.
Accompanying drawing illustrates:
Fig. 1 is kingbolt stretching and measures technique
Detailed description of the invention:
A kind of kingbolt stretching and measurement technique, hydraulic oil pump promotes bolt tensioning jack to do work, when hydraulic oil pump reaches one
After level pressure force value, kingbolt starts to deform upon, and the elongation of kingbolt is proportional with the pressure of hydraulic oil pump, kingbolt
While deforming upon, the measurement bolt height of its intracavity changes, and is now arranged on the mechanical amesdial measured on sleeve
Pointer changes, and measures numerical value by reading, intuitively reflects the deflection of kingbolt, and said method comprises the following steps:
As it is shown in figure 1,
1) kingbolt 2 is screwed in pump case 1 through pump cover 3；
2) nut 4 is installed on kingbolt 2；
3) measurement sleeve 9, machinery amesdial 8 are placed on kingbolt, then fasten with threaded 10；
4) bolt tensioning jack 7 is fixed on kingbolt；
5) hydraulic oil pump 6 is connected on bolt tensioning jack 7；
6) hydraulic oil pump 6 is pressurizeed, record oil pressure value and tensile elongation；
7), after hydraulic oil pump 6 reaches rated pressure, mother nut 4 is tightened；
8) pressure of hydraulic oil pump 6 is laid down；
9) repeating next group stretching, method is ibid.
Described step 4) in kingbolt selection must uniform, select 4 identical bolt tensioning jacks, bolt tension
Device have to be perfectly the same with the contact area of pump cover, described step 3) in measurement apparatus have to be perfectly the same, so could really
Protect step 6) in measured value accurate.
Described step 6) hydraulic oil pump start pressurization after, measurement apparatus can monitor the change of kingbolt constantly, if send out
The reading of any one device existing and other devices reading difference are relatively big, then have mechanical breakdown in explanation drawing process, must stop
Only stretching, finds out reason and is out of order side by side.
Claims (3)
1. kingbolt stretching and a measurement technique, is characterized in that: hydraulic oil pump promotes bolt tensioning jack to do work, and works as hydraulic oil pump
After reaching certain pressure value, kingbolt starts to deform upon, and the elongation of kingbolt is proportional with the pressure of hydraulic oil pump,
While kingbolt deforms upon, the measurement bolt height of its intracavity changes, and is now arranged on the machinery measured on sleeve
Amesdial pointer changes, and measures numerical value by reading, intuitively reflects the deflection of kingbolt, and said method includes following
Step:
1) kingbolt (2) is screwed in pump case (1) through pump cover (3)；
2) nut (4) is installed on kingbolt (2)；
3) will measure sleeve (9), machinery amesdial (8) is placed on kingbolt, then fastens with threaded (10)；
4) bolt tensioning jack (7) is fixed on kingbolt；
5) hydraulic oil pump (6) is connected on bolt tensioning jack (7)；
6) hydraulic oil pump (6) is pressurizeed, record oil pressure value and tensile elongation；
7), after hydraulic oil pump (6) reaches rated pressure, mother nut (4) is tightened；
8) pressure of hydraulic oil pump (6) is laid down；
9) repeating next group stretching, method is ibid.
A kind of kingbolt stretching the most according to claim 1 and measure technique, is characterized in that: described step 4) in kingbolt
Selection must be uniform, selects 4 identical bolt tensioning jacks, bolt tensioning jack must be complete with the contact area of pump cover
Identical, described step 3) in measurement apparatus have to be perfectly the same, the most just can ensure that step 6) in measured value accurate.
A kind of kingbolt stretching the most according to claim 1 and measurement technique, is characterized in that: described step 6) hydraulic oil pump
After starting pressurization, measurement apparatus can monitor the change of kingbolt constantly, if it find that have the reading of any one device and its
His device reading difference is relatively big, then have mechanical breakdown in explanation drawing process, must stop stretching, find out reason and be out of order side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610574431.8A CN106248488A (en) | 2016-07-20 | 2016-07-20 | Kingbolt stretching and measurement technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610574431.8A CN106248488A (en) | 2016-07-20 | 2016-07-20 | Kingbolt stretching and measurement technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106248488A true CN106248488A (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610574431.8A Pending CN106248488A (en) | 2016-07-20 | 2016-07-20 | Kingbolt stretching and measurement technique |
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| CN (1) | CN106248488A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211714A (en) * | 2019-06-21 | 2019-09-06 | 三门核电有限公司 | A kind of reactor pressure vessel kingbolt tensile loads technique |
| CN110926940A (en) * | 2018-09-20 | 2020-03-27 | 上海汇众汽车制造有限公司 | Method for testing ultimate contact strength of material surface |
| CN112179556A (en) * | 2020-09-29 | 2021-01-05 | 核工业西南物理研究院 | A kind of fusion reactor bolt group pre-tightening detection device and its pre-tightening force detection method |
| CN113894533A (en) * | 2021-12-08 | 2022-01-07 | 东方法马通核泵有限责任公司 | Hydraulic stretching quick installation method for main pump main bolt |
| CN113984508A (en) * | 2021-11-24 | 2022-01-28 | 江苏核电有限公司 | Main bolt stretching practical operation and analysis platform and method |
| CN114216766A (en) * | 2021-11-24 | 2022-03-22 | 哈尔滨电气动力装备有限公司 | Method for measuring stretching length of main bolt of shaft seal type nuclear main pump |
| CN114360315A (en) * | 2021-12-31 | 2022-04-15 | 江苏核电有限公司 | Tensile training of nuclear power station horizontal centrifugal pump king bolt and testing platform |
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| US4597294A (en) * | 1984-06-25 | 1986-07-01 | Westinghouse Electric Corp. | Ultrasonic nondestructive tubing inspection system |
| CN200968840Y (en) * | 2006-11-08 | 2007-10-31 | 哈尔滨汽轮机厂有限责任公司 | Apparatus for measuring screw bolt elongation amount for steam turbine assembly measurement |
| CN201233211Y (en) * | 2008-08-04 | 2009-05-06 | 哈尔滨电机厂有限责任公司 | Large-sized shaft coupling bolt pretension, extension and fine measurement device |
| CN202329492U (en) * | 2011-11-17 | 2012-07-11 | 哈尔滨哈锅锅炉工程技术有限公司 | Simple measuring pull rod for inner diameter of drum body of boiler pressure container |
| CN102636094A (en) * | 2012-04-26 | 2012-08-15 | 哈尔滨电机厂有限责任公司 | Thickness measurement device for filler strip under slot wedge of steam turbogenerator rotor |
| CN202622315U (en) * | 2012-05-28 | 2012-12-26 | 宁波赛维思机械有限公司 | Stretcher for hydraulic bolt |
| CN103487322A (en) * | 2013-09-10 | 2014-01-01 | 广西桂冠开投电力有限责任公司 | Method and tool for measuring extension value of vertically-installed cold-drawn bolt with measurement hole |
| CN104483110A (en) * | 2014-11-19 | 2015-04-01 | 哈尔滨电气动力装备有限公司 | High-accuracy fine adjusting positioning device |
| CN105444658A (en) * | 2015-11-13 | 2016-03-30 | 哈尔滨电机厂有限责任公司 | Hydro-generator coupling bolt elongation value measurement technique |
-
2016
- 2016-07-20 CN CN201610574431.8A patent/CN106248488A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4597294A (en) * | 1984-06-25 | 1986-07-01 | Westinghouse Electric Corp. | Ultrasonic nondestructive tubing inspection system |
| CN200968840Y (en) * | 2006-11-08 | 2007-10-31 | 哈尔滨汽轮机厂有限责任公司 | Apparatus for measuring screw bolt elongation amount for steam turbine assembly measurement |
| CN201233211Y (en) * | 2008-08-04 | 2009-05-06 | 哈尔滨电机厂有限责任公司 | Large-sized shaft coupling bolt pretension, extension and fine measurement device |
| CN202329492U (en) * | 2011-11-17 | 2012-07-11 | 哈尔滨哈锅锅炉工程技术有限公司 | Simple measuring pull rod for inner diameter of drum body of boiler pressure container |
| CN102636094A (en) * | 2012-04-26 | 2012-08-15 | 哈尔滨电机厂有限责任公司 | Thickness measurement device for filler strip under slot wedge of steam turbogenerator rotor |
| CN202622315U (en) * | 2012-05-28 | 2012-12-26 | 宁波赛维思机械有限公司 | Stretcher for hydraulic bolt |
| CN103487322A (en) * | 2013-09-10 | 2014-01-01 | 广西桂冠开投电力有限责任公司 | Method and tool for measuring extension value of vertically-installed cold-drawn bolt with measurement hole |
| CN104483110A (en) * | 2014-11-19 | 2015-04-01 | 哈尔滨电气动力装备有限公司 | High-accuracy fine adjusting positioning device |
| CN105444658A (en) * | 2015-11-13 | 2016-03-30 | 哈尔滨电机厂有限责任公司 | Hydro-generator coupling bolt elongation value measurement technique |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926940A (en) * | 2018-09-20 | 2020-03-27 | 上海汇众汽车制造有限公司 | Method for testing ultimate contact strength of material surface |
| CN110211714A (en) * | 2019-06-21 | 2019-09-06 | 三门核电有限公司 | A kind of reactor pressure vessel kingbolt tensile loads technique |
| CN110211714B (en) * | 2019-06-21 | 2020-08-07 | 三门核电有限公司 | Reactor pressure vessel main bolt tension loading process |
| CN112179556A (en) * | 2020-09-29 | 2021-01-05 | 核工业西南物理研究院 | A kind of fusion reactor bolt group pre-tightening detection device and its pre-tightening force detection method |
| CN113984508A (en) * | 2021-11-24 | 2022-01-28 | 江苏核电有限公司 | Main bolt stretching practical operation and analysis platform and method |
| CN114216766A (en) * | 2021-11-24 | 2022-03-22 | 哈尔滨电气动力装备有限公司 | Method for measuring stretching length of main bolt of shaft seal type nuclear main pump |
| CN113984508B (en) * | 2021-11-24 | 2026-01-06 | 江苏核电有限公司 | A platform and method for practical operation and analysis of main bolt tensioning |
| CN113894533A (en) * | 2021-12-08 | 2022-01-07 | 东方法马通核泵有限责任公司 | Hydraulic stretching quick installation method for main pump main bolt |
| CN114360315A (en) * | 2021-12-31 | 2022-04-15 | 江苏核电有限公司 | Tensile training of nuclear power station horizontal centrifugal pump king bolt and testing platform |
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Application publication date: 20161221 |
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