CN107063072A - Plant equipment contact surface opening displacement measurement apparatus and its measuring method - Google Patents
Plant equipment contact surface opening displacement measurement apparatus and its measuring method Download PDFInfo
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- CN107063072A CN107063072A CN201710321399.7A CN201710321399A CN107063072A CN 107063072 A CN107063072 A CN 107063072A CN 201710321399 A CN201710321399 A CN 201710321399A CN 107063072 A CN107063072 A CN 107063072A
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- contact surface
- opening displacement
- shaped spring
- spring leaf
- plant equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
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- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to a kind of plant equipment contact surface opening displacement measurement apparatus and its measuring method, including the mechanical equipment component first and mechanical equipment component second to be measured being disposed adjacent, magnet base is separately installed with the contact surface of the mechanical equipment component first and mechanical equipment component second, the top of two magnet bases is fixed with U-shaped spring leaf by screw, resistance strain gage is installed, the resistance strain gage connects deformeter by foil gauge signal wire in the middle part of the crossbeam of the U-shaped spring leaf.Compact conformation of the present invention, rationally, it is easy to operate, it is 65Mn spring steel plates by using material, the main body of the present invention is constituted with reference to magnet base and resistance strain gage.With light structure, install simple and convenient, can effectively measure plant equipment contact surface opening displacement, can be used after carrying out effective encapsulation process to foil gauge in water environment.
Description
Technical field
The present invention relates to test equipment technical field, especially a kind of plant equipment contact surface opening displacement measurement apparatus and
Its measuring method.
Background technology
In engineering practice, many plant equipment under arms during due to by interior pressure, mechanical stretching or vibration
Etc. reason, the contact surface between some parts can be made loosening occur and opened, so as to influence equipment performance, can caused when serious
Simultaneously engineering accident occurs for equipment failure.Therefore, when equipment is delivered or during use, in running order crucial portion
Contact surface opening displacement between the adjacent component of position carries out accurately measuring very necessary, is to ensure that equipment is qualified and can have safely
Imitate the important indicator used.
At present, finite element analysis software is mainly used it is determined that using work to the analysis of plant equipment contact surface opening displacement
Numerical simulation calculation is carried out under condition.
The content of the invention
The shortcoming that the applicant is directed in above-mentioned existing production technology is surveyed there is provided a kind of plant equipment contact surface opening displacement
Device and its measuring method are measured, so as to be surveyed in plant equipment working condition to adjacent component contact surface opening displacement
Amount, can logarithm value result of calculation verified, substantially increase use flexibility and reliability.
The technical solution adopted in the present invention is as follows：
A kind of plant equipment contact surface opening displacement measurement apparatus, including the mechanical equipment component first to be measured being disposed adjacent
With mechanical equipment component second, magnetic force is separately installed with the contact surface of the mechanical equipment component first and mechanical equipment component second
Seat, the top of two magnet bases is fixed with installation resistance in the middle part of U-shaped spring leaf, the crossbeam of the U-shaped spring leaf by screw and answered
Become piece, the resistance strain gage connects deformeter by foil gauge signal wire.
It is used as the further improvement of above-mentioned technical proposal：
The U-shaped spring leaf bottom is outward extended with knuckle, the knuckle and is fixed by screws on magnet base；
Top and bottom adhering resistance strain sheets in the middle part of the U-shaped spring leaf crossbeam；
The material of the U-shaped spring leaf is 65Mn.
A kind of measuring method of plant equipment contact surface opening displacement measurement apparatus, comprises the following steps：
The first step：Magnet base is placed in the both sides of plant equipment adjacent component contact surface first；
Second step：In U-shaped spring leaf crossbeam centre position, upper and lower surface pastes resistance strain gage along its length, and makes
Sealed with silica gel；
3rd step：U-shaped spring leaf two ends are fixed on magnet base using screw；
4th step：Foil gauge on U-shaped spring leaf is connected to deformeter by foil gauge signal wire；
5th step：Under plant equipment working condition, pass through strain-ga(u)ge measurement to U-shaped spring leaf crossbeam midpoint upper and lower surface
Strain value；
6th step：Sealing surface opening displacement amount is calculated by formula.
It is used as the further improvement of above-mentioned technical proposal：
A height of L of U-shaped spring leaf, width is b, and thickness is h；When contact surface opening displacement is y, magnet base drives U-shaped
Y/2 is opened at A, D two ends of spring leaf respectively, and BC sections of stress states of spring gooseneck combine for stretching with bending；Due to spring steel
Symmetry, take right half part ABE piecewise analysis,
The clamped cantilever beam in B ends is reduced to by AB sections, has y/2 opening displacement at A ends.It can be obtained according to the mechanics of materials
The A ends horizontal pull P that crossbeam has due to opening displacement is：
WhereinFor spring leaf cross sectional moment of inertia.
The moment of flexure that BE sections of crossbeam is steady state value, is：
Crossbeam midpoint E upper and lower surface bending stresses are：
WhereinFor module of anti-bending section.
The strain of crossbeam midpoint E upper and lower surfaces is：
Therefore the opening displacement of contact surface is：
Foil gauge is pasted by means of in U-shaped spring leaf crossbeam centre position upper and lower surface, can be measured by deformeter
Corresponding strain value ε, so as to obtain the opening displacement y of plant equipment contact surface.
Beneficial effects of the present invention are as follows：
Compact conformation of the present invention, rationally, it is easy to operate, be 65Mn spring steel plates by using material, with reference to magnet base and
Resistance strain gage constitutes the main body of the present invention.With light structure, install simple and convenient, can effectively measure plant equipment and connect
Contacting surface opening displacement, can be used after carrying out effective encapsulation process to foil gauge in water environment.
The present invention can be measured in plant equipment working condition to adjacent component contact surface opening displacement, logarithm value meter
Calculation value is verified.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of U-shaped spring leaf of the present invention.
Fig. 3 is that U-shaped spring leaf of the present invention is subjected to displacement figure with contact surface.
Fig. 4 is U-shaped spring leaf right half part analysis chart of the present invention.
Wherein：1st, magnet base；2nd, screw；3rd, U-shaped spring leaf；4th, resistance strain gage；5th, foil gauge signal wire；6th, strain
Instrument；7th, mechanical equipment component first；8th, mechanical equipment component second.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is illustrated.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the plant equipment contact surface opening displacement measurement apparatus of the present embodiment, including
The mechanical equipment component first 7 and mechanical equipment component second 8 to be measured being disposed adjacent, mechanical equipment component first 7 and plant equipment portion
Magnet base 1 is separately installed with the contact surface of part second 8, the top of two magnet bases 1 is fixed with U-shaped spring leaf 3, U by screw 2
Resistance strain gage 4 is installed, resistance strain gage 4 connects deformeter 6 by foil gauge signal wire 5 in the middle part of the crossbeam of shape spring leaf 3.
The bottom of U-shaped spring leaf 3 is outward extended with knuckle, knuckle to be fixed on magnet base 1 by screw 2.
Top and bottom adhering resistance strain sheets 4 in the middle part of the crossbeam of U-shaped spring leaf 3.
The material of U-shaped spring leaf 3 is 65Mn.
The measuring method of the plant equipment contact surface opening displacement measurement apparatus of the present embodiment, comprises the following steps：
The first step：Magnet base 1 is placed in the both sides of plant equipment adjacent component contact surface first；
Second step：Resistance strain gage 4 along its length is pasted in the crossbeam centre position upper and lower surface of U-shaped spring leaf 3, and
Sealed using silica gel；
3rd step：The two ends of U-shaped spring leaf 3 are fixed on magnet base 1 using screw 2；
4th step：Foil gauge signal wire 5 on U-shaped spring leaf 3 is connected to deformeter 6；
5th step：Under plant equipment working condition, pass through strain-ga(u)ge measurement to U-shaped spring leaf crossbeam midpoint upper and lower surface
Strain value；
6th step：Sealing surface opening displacement amount is calculated by formula.
A height of L of U-shaped spring leaf 3, width is b, and thickness is h；When contact surface opening displacement is y, magnet base 1 drives U
Y/2 is opened at A, D two ends of shape spring leaf 3 respectively, and BC sections of stress states of spring gooseneck combine for stretching with bending；Due to spring
The symmetry of steel, takes right half part ABE piecewise analysis,
The clamped cantilever beam in B ends is reduced to by AB sections, has y/2 opening displacement at A ends.
Can obtain the A ends horizontal pull P that crossbeam has due to opening displacement according to the mechanics of materials is：
WhereinFor spring leaf cross sectional moment of inertia.
The moment of flexure that BE sections of crossbeam is steady state value, is：
Crossbeam midpoint E upper and lower surface bending stresses are：
WhereinFor module of anti-bending section.
The strain of crossbeam midpoint E upper and lower surfaces is：
Therefore the opening displacement of contact surface is：
Foil gauge is pasted by means of in U-shaped spring leaf crossbeam centre position upper and lower surface, can be measured by deformeter
Corresponding strain value ε, so as to obtain the opening displacement y of plant equipment contact surface.
It is known that opening displacement y and strain value ε is linear relationship from foregoing invention principle, can be by given different
Joint open y carries out checking measurement accuracy of the invention to compare the strain value ε in U-shaped spring leaf crossbeam centre position.Assuming that h=
1mm, b=20mm, L=150mm, numerical simulation, comparing result such as following table are carried out by FEM-software ANSYS：
Can easily it be obtained during plant equipment use to adjacent component contact surface opening displacement by the above method
Measurement, easy to use, survey calculation is simple.
Above description is explanation of the invention, is not the restriction to invention, limited range of the present invention is referring to right
It is required that, within protection scope of the present invention, any type of modification can be made.
Claims (6)
1. a kind of plant equipment contact surface opening displacement measurement apparatus, it is characterised in that：Including the machinery to be measured being disposed adjacent
Part of appliance first (7) and mechanical equipment component second (8), the mechanical equipment component first (7) and mechanical equipment component second (8) connect
Magnet base (1) is separately installed with contacting surface, the top of two magnet bases (1) is fixed with U-shaped spring leaf (3), institute by screw (2)
State and resistance strain gage (4) is installed in the middle part of the crossbeam of U-shaped spring leaf (3), the resistance strain gage (4) passes through foil gauge signal wire
(5) connection deformeter (6).
2. plant equipment contact surface opening displacement measurement apparatus as claimed in claim 1, it is characterised in that：The U-shaped spring
Piece (3) bottom is outward extended with knuckle, the knuckle to be fixed on magnet base (1) by screw (2).
3. plant equipment contact surface opening displacement measurement apparatus as claimed in claim 1, it is characterised in that：The U-shaped spring
Top and bottom adhering resistance strain sheets (4) in the middle part of piece (3) crossbeam.
4. plant equipment contact surface opening displacement measurement apparatus as claimed in claim 1, it is characterised in that：The U-shaped spring
The material of piece (3) is 65Mn.
5. a kind of measuring method of plant equipment contact surface opening displacement measurement apparatus described in utilization claim 1, its feature exists
In：Comprise the following steps：
The first step：Magnet base (1) is placed in the both sides of plant equipment adjacent component contact surface first；
Second step：In U-shaped spring leaf (3) crossbeam centre position, upper and lower surface pastes resistance strain gage (4) along its length, and
Sealed using silica gel；
3rd step：U-shaped spring leaf (3) two ends are fixed on magnet base (1) using screw (2)；
4th step：Resistance strain gage (4) on U-shaped spring leaf (3) is connected to deformeter (6) by foil gauge signal wire (5)；
5th step：Under plant equipment working condition, pass through answering for strain-ga(u)ge measurement to U-shaped spring leaf crossbeam midpoint upper and lower surface
Variate；
6th step：Contact surface opening displacement amount is calculated by formula.
6. the measuring method of plant equipment contact surface opening displacement measurement apparatus as claimed in claim 5, it is characterised in that：U
A height of L of shape spring leaf (3), width is b, and thickness is h；When contact surface opening displacement is y, magnet base (1) drives U-shaped spring
Y/2 is opened at A, D two ends of piece (3) respectively, and BC sections of stress states of spring gooseneck combine for stretching with bending；Due to spring steel
Symmetry, takes right half part ABE piecewise analysis,
The clamped cantilever beam in B ends is reduced to by AB sections, has y/2 opening displacement at A ends.A ends can be obtained according to the mechanics of materials
The horizontal pull P that crossbeam has due to opening displacement is：
<mrow>
<mi>P</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mn>3</mn>
<msub>
<mi>EI</mi>
<mi>Z</mi>
</msub>
</mrow>
<msup>
<mi>L</mi>
<mn>3</mn>
</msup>
</mfrac>
<mo>&CenterDot;</mo>
<mfrac>
<mi>y</mi>
<mn>2</mn>
</mfrac>
</mrow>
WhereinFor spring leaf cross sectional moment of inertia.
The moment of flexure that BE sections of crossbeam is steady state value, is：
<mrow>
<mi>M</mi>
<mo>=</mo>
<mi>P</mi>
<mi>L</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mn>3</mn>
<msub>
<mi>EI</mi>
<mi>z</mi>
</msub>
</mrow>
<msup>
<mi>L</mi>
<mn>2</mn>
</msup>
</mfrac>
<mo>&CenterDot;</mo>
<mfrac>
<mi>y</mi>
<mn>2</mn>
</mfrac>
</mrow>
Crossbeam midpoint E upper and lower surface bending stresses are：
WhereinFor module of anti-bending section.
The strain of crossbeam midpoint E upper and lower surfaces is：
Therefore the opening displacement of contact surface is：
Foil gauge is pasted by means of in U-shaped spring leaf crossbeam centre position upper and lower surface, can be measured accordingly by deformeter
Strain value ε, so as to obtain the opening displacement y of plant equipment contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321399.7A CN107063072A (en) | 2017-05-09 | 2017-05-09 | Plant equipment contact surface opening displacement measurement apparatus and its measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321399.7A CN107063072A (en) | 2017-05-09 | 2017-05-09 | Plant equipment contact surface opening displacement measurement apparatus and its measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107063072A true CN107063072A (en) | 2017-08-18 |
Family
ID=59596217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710321399.7A Pending CN107063072A (en) | 2017-05-09 | 2017-05-09 | Plant equipment contact surface opening displacement measurement apparatus and its measuring method |
Country Status (1)
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| CN (1) | CN107063072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987155A (en) * | 2019-12-17 | 2020-04-10 | 山东大学 | TBM hob loss state real-time monitoring device and method |
| CN112710381A (en) * | 2020-12-18 | 2021-04-27 | 重庆理工大学 | Vertical vibration detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2821098B2 (en) * | 1995-05-30 | 1998-11-05 | 株式会社鴻池組 | Soil displacement measurement measuring device |
| CN2881604Y (en) * | 2005-10-31 | 2007-03-21 | 中国地震局工程力学研究所 | Crack meter |
| CN102261889A (en) * | 2011-04-08 | 2011-11-30 | 长安大学 | Two-cantilever large-deformation strain measurement sensor |
| CN103868443A (en) * | 2014-03-21 | 2014-06-18 | 中国船舶重工集团公司第七○二研究所 | Device for measuring opening degree of sealing faces of flanges |
| CN205561747U (en) * | 2016-01-19 | 2016-09-07 | 辽宁工业大学 | Reinforced concrete and metal components warp measuring resistance strain displacement sensor |
-
2017
- 2017-05-09 CN CN201710321399.7A patent/CN107063072A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2821098B2 (en) * | 1995-05-30 | 1998-11-05 | 株式会社鴻池組 | Soil displacement measurement measuring device |
| CN2881604Y (en) * | 2005-10-31 | 2007-03-21 | 中国地震局工程力学研究所 | Crack meter |
| CN102261889A (en) * | 2011-04-08 | 2011-11-30 | 长安大学 | Two-cantilever large-deformation strain measurement sensor |
| CN102261889B (en) * | 2011-04-08 | 2013-09-04 | 长安大学 | Two-cantilever large-deformation strain measurement sensor |
| CN103868443A (en) * | 2014-03-21 | 2014-06-18 | 中国船舶重工集团公司第七○二研究所 | Device for measuring opening degree of sealing faces of flanges |
| CN205561747U (en) * | 2016-01-19 | 2016-09-07 | 辽宁工业大学 | Reinforced concrete and metal components warp measuring resistance strain displacement sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987155A (en) * | 2019-12-17 | 2020-04-10 | 山东大学 | TBM hob loss state real-time monitoring device and method |
| CN110987155B (en) * | 2019-12-17 | 2021-07-06 | 山东大学 | TBM hob loss state real-time monitoring device and method |
| CN112710381A (en) * | 2020-12-18 | 2021-04-27 | 重庆理工大学 | Vertical vibration detection device |
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Application publication date: 20170818 |