CN105004520A - Ball valve test pressure stress measuring process method - Google Patents
Ball valve test pressure stress measuring process method Download PDFInfo
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- CN105004520A CN105004520A CN201510505884.0A CN201510505884A CN105004520A CN 105004520 A CN105004520 A CN 105004520A CN 201510505884 A CN201510505884 A CN 201510505884A CN 105004520 A CN105004520 A CN 105004520A
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Abstract
The invention discloses a ball valve test pressure stress measuring process method. The ball valve testing process, deformation of a valve spherical surface is measured by a laser tracker, and stress of the valve spherical surface is measured by a stress measuring instrument in a condition that an inner cavity of a ball valve has water pressure, thereby providing a data basis for analyzing reasons of water leakage in ball valve sealing, inspecting the manufacturing quality of ball valve assembly, and improving the precision standard for the water leakage of a ball valve test. The method disclosed by the invention solves a problem that the valve stress deformation cannot be directly measured, thereby providing the data basis for analyzing the reasons of water leakage in ball valve sealing. In the condition that the inner cavity of the ball valve has pressure, the deformation of the valve spherical surface is measured by the laser tracker, and the stress of the valve spherical surface is measured by the stress measuring instrument, so that the manufacturing quality of ball valve assembly is inspected.
Description
Technical field
The invention discloses a kind of ball valve test pressure stress measurement process.
Background technology
Ball valve of water turbine sealing position adopts shape metallic leak-proof structure now, requires that the water leakage allowed between metallic sealing section is 0L/min.At present, ball valve processing adopts different processes, improves the machining precision at valve and valve body related seals position, ensures the water leakage requirement of ball valve.Existing measuring technique is some horizontal shifts of measuring ball valve valve central point with dial gauge, can not react distortion and the stress relation of ball valve valve reality; The data adopting laser tracker and stress detector to measure under the change of ball valve chamber pressure, have reacted practical distortion situation and the stress changing relation in ball valve valve space, can check the Design and manufacture quality of ball valve.
Summary of the invention
The invention discloses a kind of ball valve test pressure of ball valve of water turbine stress measurement process, optimize ball valve assembling and test technology, improve the accuracy standard of ball valve test water leakage.
Technical scheme of the present invention is a kind of ball valve test pressure stress measurement process, and processing step is as follows:
1) be put on test platform after ball valve assembling, ball valve inner chamber be full of water, valve sphere marks measurement point position;
(2) bonding laser tracker datum mark base on valve measurement point position;
(3) on valve measurement point position, bonding survey stress becomes sheet;
(4) under ball valve inner chamber is full of water and water pressure (0Mpa), the data of valve spherical surface measurement point position are measured with laser tracker;
(5) under ball valve inner chamber is full of water and water pressure (0Mpa), the stress data of valve spherical surface measurement point is measured with stress detector;
(6) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the data of valve spherical surface measurement point position are measured with laser tracker;
(7) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the stress data of valve spherical surface measurement point is measured with stress detector;
(8) under ball valve inner chamber water pressure (0Mpa), the data of valve spherical surface measurement point position are remeasured with laser tracker;
(9) under ball valve inner chamber water pressure (0Mpa), the stress data of valve spherical surface measurement point is remeasured with stress detector;
(10) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, measured distortion and the STRESS VARIATION data of valve sphere by laser tracker and stress detector, ensure that the water leakage that ball valve assembles.
There are following technological difficulties in the present invention in process of the test:
(1) valve sphere pressure distortion is measured.
(2) valve sphere pressure stresses is measured.
Technique effect of the present invention is as follows:
(1) be put on test platform after ball valve assembling, ball valve inner chamber be full of water, valve sphere marks measurement point position.The determination of measurement point position, needing can the stress deformation of accurate response valve.
(2) on valve measurement point position, bonding laser tracker datum mark base.Measure the bonding of base, the measuring error of laser tracker can be avoided, ensure the accuracy of measurement data.
(3) on valve measurement point position, bonding survey stress becomes sheet.Survey the selection of stress point position, the data analyzing laser tracker measurement should be contributed to.
(4) under ball valve inner chamber is full of water and water pressure (0Mpa), the data of valve spherical surface measurement point position are measured with laser tracker.The data gathered are that benchmark analyzes data, are convenient to subsequent data analysis.
(5) under ball valve inner chamber is full of water and water pressure 0MPa pressure, the stress data of valve spherical surface measurement point is measured with stress detector.The data gathered are that benchmark analyzes data, are convenient to subsequent data analysis.
(6) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the data of valve spherical surface measurement point position are measured with laser tracker.The data that the different pressures stage measures with laser tracker, can find the deformation rule of valve sphere.
(7) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the stress data of valve spherical surface measurement point is measured with stress detector.The data that the different pressures stage measures with stress detector, can find the variation of stress of valve sphere.
(8) under ball valve inner chamber water pressure 0MPa, the data of valve spherical surface measurement point position are remeasured with laser tracker.The data of Resurvey and the benchmark of former collection are analyzed data and are contrasted, and eliminate measuring error, provide and analyze data accurately.
(9) under ball valve inner chamber water pressure 0MPa, the stress data of valve spherical surface measurement point is remeasured with stress detector.The data of Resurvey and the benchmark of former collection are analyzed data and are contrasted, and eliminate measuring error, provide and analyze data accurately.
(10) when ball valve inner chamber has water pressure, measured distortion and the STRESS VARIATION data of valve sphere by laser tracker and stress detector, ensure that the water leakage that ball valve assembles.
This invention ensures that the quality of ball valve sealing water leakage, under ball valve inner chamber has water pressure, measure valve spherical deformation with laser tracker, measure the stress of valve sphere with stress detector, examine the workmanship of ball valve assembling.
The present invention proposes a kind of process measuring ball valve valve static stress and distortion, solve the difficult problem that valve stress deformation cannot directly be measured, for the reason analyzing ball valve sealing water leakage provides data foundation.
Accompanying drawing explanation
Fig. 1 valve spherical surface measurement point position schematic diagram
Fig. 2 valve spherical surface measurement point position and ordering principle figure
● embodiment
A kind of ball valve test pressure stress measurement process, comprises following processing step:
(1) be put on test platform after ball valve assembling, ball valve inner chamber be full of water, valve sphere marks measurement point position;
(2) bonding laser tracker datum mark base on valve measurement point position;
(3) on valve measurement point position, bonding survey stress becomes sheet;
(4) under ball valve inner chamber is full of water and water pressure (0Mpa), the data of valve spherical surface measurement point position are measured with laser tracker;
(5) under ball valve inner chamber is full of water and water pressure (0Mpa), the stress data of valve spherical surface measurement point is measured with stress detector;
(6) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the data of valve spherical surface measurement point position are measured with laser tracker;
(7) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the stress data of valve spherical surface measurement point is measured with stress detector;
(8) under ball valve inner chamber water pressure (0Mpa), the data of valve spherical surface measurement point position are remeasured with laser tracker;
(9) under ball valve inner chamber water pressure (0Mpa), the stress data of valve spherical surface measurement point is remeasured with stress detector;
(10) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, measured distortion and the STRESS VARIATION data of valve sphere by laser tracker and stress detector, ensure that the water leakage that ball valve assembles.
Originally being embodiment particular content is:
(1) be put on test platform after ball valve assembling, valve is in full off state, and ball valve 1 inner chamber is full of water, and at ball valve two ends, sealing surface place has not allowed seepage place.Valve 2 sphere marks measurement point position, and measurement point should on same pitch circle 3.Measurement point energy accurate response valve stress deformation on same pitch circle 3, is shown in Fig. 1.
(2) on valve 2 measurement point same pitch circle 3 position, bonding laser tracker datum mark base, measurement point base bonds 9 points altogether.Measure the bonding of base, the measuring error of laser tracker can be avoided, ensure the accuracy of measurement data, see Fig. 2.
(3) on valve 2 measurement point same pitch circle 3 position, bonding survey stress becomes sheet, totally 9 points.Measurement point energy accurate response valve stress deformation on same pitch circle 3, contributes to the data analyzing laser tracker measurement, sees Fig. 2.
(4) ball valve inner chamber 1 is full of water and under water pressure 0MPa, measure the three-dimensional raw data of the first measurement point 4, second measurement point 5, the 3rd measurement point 6, the 4th measurement point 7, the 5th measurement point 8, the 6th measurement point 9, the 7th measurement point 10, the 8th measurement point 10 and the 9th measurement point 11 on the same pitch circle 3 of valve 2 sphere with laser tracker, see Fig. 2.
(5) ball valve inner chamber 1 is full of water and under water pressure 0MPa, measure the primary stress data of the first measurement point 4, second measurement point 5, the 3rd measurement point 6, the 4th measurement point 7, the 5th measurement point 8, the 6th measurement point 9, the 7th measurement point 10, the 8th measurement point 10 and the 9th measurement point 11 on the same pitch circle 3 of valve 2 sphere with stress detector, see Fig. 2.
(6) when ball valve inner chamber 1 water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the three-dimensional data of the first measurement point 4, second measurement point 5, the 3rd measurement point 6, the 4th measurement point 7, the 5th measurement point 8, the 6th measurement point 9, the 7th measurement point 10, the 8th measurement point 10 and the 9th measurement point 11 on the same pitch circle 3 of valve 2 sphere are measured with laser tracker.By under different pressures by the data that laser tracker is measured, carry out Drawing of Curve and date comprision, find the deformation rule of valve 2 sphere, see Fig. 2.
(7) when ball valve inner chamber 1 water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the stress data of the first measurement point 4, second measurement point 5, the 3rd measurement point 6, the 4th measurement point 7, the 5th measurement point 8, the 6th measurement point 9, the 7th measurement point 10, the 8th measurement point 10 and the 9th measurement point 11 on the same pitch circle 3 of valve 2 sphere is measured with stress detector.By under different water pressure by the data that stress detector is measured, carry out Drawing of Curve and date comprision, find the variation of stress of valve 2 sphere, see Fig. 2.
(8) ball valve inner chamber 1 water pressure is down to 0MPa, measures the three-dimensional data of the first measurement point 4, second measurement point 5, the 3rd measurement point 6, the 4th measurement point 7, the 5th measurement point 8, the 6th measurement point 9, the 7th measurement point 10, the 8th measurement point 10 and the 9th measurement point 11 on the same pitch circle 3 of valve 2 sphere with laser tracker.The three-dimensional data gathered, participate in Drawing of Curve and date comprision, can eliminate ball valve rigging error, provide and analyze data accurately, see Fig. 2.
(9) ball valve inner chamber 1 water pressure is down to 0MPa, measures the stress data of the first measurement point 4, second measurement point 5, the 3rd measurement point 6, the 4th measurement point 7, the 5th measurement point 8, the 6th measurement point 9, the 7th measurement point 10, the 8th measurement point 10 and the 9th measurement point 11 on the same pitch circle 3 of valve 2 sphere with stress detector.Gather the stress data of measurement point, participate in Drawing of Curve and date comprision, eliminate measuring error, provide and analyze data accurately, see Fig. 2.
(10) when ball valve inner chamber 1 has water pressure, three-dimensional data and the stress data of the first measurement point 4, second measurement point 5, the 3rd measurement point 6, the 4th measurement point 7, the 5th measurement point 8, the 6th measurement point 9, the 7th measurement point 10, the 8th measurement point 10 and the 9th measurement point 11 on the same pitch circle 3 of valve 2 sphere is measured with laser tracker and stress detector, ensure that the water leakage that ball valve assembles, see Fig. 2.
Need equipment be used:
● hydraulic oil pump
● water pump
● laser tracker
● stress detector
● notebook computer
● tensimeter
The present invention proposes a kind of process measuring ball valve valve static stress and distortion, solve the difficult problem that valve stress deformation cannot directly be measured, for the reason analyzing ball valve sealing water leakage provides data foundation.Under ball valve inner chamber has pressure, measure valve spherical deformation with laser tracker, measure the stress of valve sphere with stress detector, examine the workmanship of ball valve assembling.
Claims (1)
1. a ball valve test pressure stress measurement process, is characterized in that: comprise following processing step:
(1) be put on test platform after ball valve assembling, ball valve inner chamber be full of water, valve sphere marks measurement point position;
(2) bonding laser tracker datum mark base on valve measurement point position;
(3) on valve measurement point position, bonding survey stress becomes sheet;
(4) under ball valve inner chamber is full of water and water pressure (0Mpa), the data of valve spherical surface measurement point position are measured with laser tracker;
(5) under ball valve inner chamber is full of water and water pressure (0Mpa), the stress data of valve spherical surface measurement point is measured with stress detector;
(6) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the data of valve spherical surface measurement point position are measured with laser tracker;
(7) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, the stress data of valve spherical surface measurement point is measured with stress detector;
(8) under ball valve inner chamber water pressure (0Mpa), the data of valve spherical surface measurement point position are remeasured with laser tracker;
(9) under ball valve inner chamber water pressure (0Mpa), the stress data of valve spherical surface measurement point is remeasured with stress detector;
(10) when ball valve inner chamber water pressure is respectively 0MPa, 1MPa, 2MPa design pressure, measured distortion and the STRESS VARIATION data of valve sphere by laser tracker and stress detector, ensure that the water leakage that ball valve assembles.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108942155A (en) * | 2018-09-04 | 2018-12-07 | 哈尔滨电机厂有限责任公司 | A kind of hydraulic turbine large size ball valve metal sealing surface pressure deformation adjusting process method |
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Cited By (2)
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Application publication date: 20151028 |