CN103868443A - Device for measuring opening degree of sealing faces of flanges - Google Patents
Device for measuring opening degree of sealing faces of flanges Download PDFInfo
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- CN103868443A CN103868443A CN201410107762.1A CN201410107762A CN103868443A CN 103868443 A CN103868443 A CN 103868443A CN 201410107762 A CN201410107762 A CN 201410107762A CN 103868443 A CN103868443 A CN 103868443A
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- spring leaf
- flange
- pushing tow
- magnet base
- angle structure
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Abstract
A device for measuring the opening degree of sealing faces of flanges comprises two magnetic bases. The two magnetic bases are attracted to the inner wall faces of mounting holes of the two flanges which are connected in a sealed mode on a pressure bearing container. A fixing support and a pushing support are installed on the two magnetic bases respectively. One end of a short leaf spring and one end of a long leaf spring are fixedly installed on the fixing support, and the other ends of the two leaf springs are suspended and both extend in the radial direction of the flanges. The two sides of the fixed ends of the two leaf springs are respectively provided with a strain gauge, and the two strain gauges on the short leaf spring and the two strain gauges on the long leaf spring are all in half-bridge connection. Two axial pushing pins are arranged on the pushing support, one of the two pushing pins is connected with the suspension end of the short leaf spring in an abutting mode, the other one of the two pushing pins is connected with the suspension end of the long leaf spring in an abutting mode, and connecting wires of the four strain gauges are led out through water-tight connectors. The device can be used for measuring the opening degree of the sealing faces of the flanges in a high-pressure water environment in the pressure bearing container.
Description
Technical field
The present invention relates to flange seal field of measuring technique, be specifically related to measure the device of the flange sealing surface amount of opening in pressure resistant vessel inner high voltage water environment condition.
Background technology
High pressure flange sealing is the seal form that pressure resistant vessel is conventional, conventionally adopt the O shape rubber ring with self sealing action to be arranged in the groove of flange sealing surface, due to the trench bottom surfaces close contact on pre-sealed effect O shape circle and flange sealing surface and sealing surface, when entering groove by flange sealing surface gap, aqueous medium in pressure resistant vessel can only work to of an O-ring seals side, in the time that the pressure in pressure resistant vessel increases, O-ring seals is pushed to groove another side, thereby O RunddichtringO is squeezed into D shape, and pressure is passed to flange contact facings, so further improve sealing effectiveness.But, the self sealss ability of O-ring seals is limited, owing to there being gap between flange sealing surface, in the time that pressure resistant vessel internal pressure is too high, flange sealing surface can produce and open distortion under the effect of axial load, sealing surface gap is increased, may there is " sizing material is extruded " phenomenon of O-ring seals, cause thus seal failure, therefore, in the time of the design of Sealing Structure of pressure resistant vessel, especially for the design of Sealing Structure of ultrahigh pressure vessel or large-sized pressure resistant vessel, must know the maximum amount of opening of flange sealing surface in the time of design pressure, and as version and the size of Main Basis design O-ring seal and groove, thereby guarantee the positiver sealing of pressure resistant vessel.
At present, it is mainly to adopt finite element analysis software under definite physical dimension and design pressure, to carry out analog computation that the flange sealing surface of pressure resistant vessel opens quantitative analysis, obtain the theoretical value of the flange sealing surface amount of opening, and set it as the size foundation of follow-up design of Sealing Structure, but owing to lacking the device of in pressure resistant vessel inner high voltage water environment, the actual amount of opening of flange sealing surface being measured, thereby cannot carry out actual testing authentication to calculated value.The measuring technique of the fresh rare flange sealing surface amount of opening in prior art, Chinese patent ZL201110462716.X discloses " a kind of measurement mechanism of flange sealing surface ", it is mainly used in the flange manufacturing process measurement of the flange seal facial disfigurement causing due to welding and Technology for Heating Processing, it cannot be applicable to the measurement to the flange sealing surface amount of opening in pressure resistant vessel inner high voltage underwater environment, and for example Chinese patent ZL20132011942.3 disclosed " a kind of tower barrel of wind generating set flange opening pick-up unit ", although thereby it is to detect tower drum flange opening amount by foil gauge strain measurement, thereby and compare Real-Time Monitoring flange open condition with maximum theoretical, but it is at the arranged outside foil gauge of flange connection surface, and measurement is flange radial strain, cannot be applicable to equally the measurement to the flange sealing surface amount of opening in pressure resistant vessel inner high voltage underwater environment.
Summary of the invention
The applicant improves for above-mentioned shortcoming of the prior art, and a kind of measurement mechanism of the flange sealing surface amount of opening is provided, and it can measure the amount of opening of flange sealing surface in pressure resistant vessel inner high voltage water environment, and simple in structure, easy to operate.
Technical scheme of the present invention is as follows:
The measurement mechanism of the flange sealing surface amount of opening, comprises magnet base one and magnet base two, and described two magnet bases rely on its magnetic to be adsorbed on respectively on the internal face of the mounting hole on flange one, the flange two of pressure resistant vessel, and flange one is tightly connected with flange two; Fixed support and magnet base one are affixed, one end of short spring leaf and long spring leaf is installed on fixed support, the other end of short spring leaf and long spring leaf suspends, and all along the radially extension of described two flanges, the both sides of short spring leaf stiff end and long spring leaf stiff end are equipped with a foil gauge, two foil gauges on two foil gauges and long spring leaf on short spring leaf are half-bridge and connect, and two foil gauges on two foil gauges and long spring leaf on short spring leaf are along the axial stickup of described two flanges; Pushing tow support is installed on magnet base two, pushing tow support is provided with along described two flange shaft to two pushing tow pin that protrude, in described two pushing tow pin one with the end butt that suspends of short spring leaf, the end butt that suspends of another in described two pushing tow pin and long spring leaf, the connection wire of described four foil gauges is drawn through underwater electrical connector.
Its further technical scheme is:
Described fixed support is with right-angle structure, fixed support is close on magnet base one by described right-angle structure, and axial plate and the magnet base one of described right-angle structure are affixed, one end of short spring leaf and long spring leaf is all affixed with same one end of the radial plate of described right-angle structure.
Described pushing tow support is with right-angle structure, and pushing tow support is close on magnet base two by described right-angle structure, and the axial plate of described right-angle structure and magnet base two affixed, two pushing tow pin are located in the radial plate of described right-angle structure.
Technique effect of the present invention:
The present invention is by being arranged to described spring leaf the cantilevered fashion of prebuckling distortion, by the strain variation amount of measurement described spring leaf under the effect of the axial load of pressure resistant vessel inner high voltage aqueous medium, and according to the funtcional relationship between the strain of semi-girder and amount of deflection, can realize the real-time measurement of the actual amount of opening to flange sealing surface in pressure resistant vessel inner high voltage water environment; The present invention is by the setting of one is long and the other is short two spring leafs, not only can measure flange sealing surface under test pressure along flange shaft to the actual amount of opening, and can measure the opening angle of flange sealing surface.Utilize the theoretical value that actual measured value that the present invention obtains not only can calculate Finite Element Method to carry out testing authentication, and can provide more accurate design considerations for the version of flange sealing structure and size.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention.
Fig. 2 is support bracket fastened side view of the present invention.
Fig. 3 is the side view of pushing tow support of the present invention.
Wherein: 1, magnet base one; 2, magnet base two; 3, flange one; 4, flange two; 5, fixed support; 6, short spring leaf; 7, long spring leaf; 8, foil gauge; 9, pushing tow support; 91, pushing tow pin; 10, connect wire; 11, underwater electrical connector; 12, O RunddichtringO; 13, strainmeter.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
See Fig. 1, the present invention includes magnet base 1 and magnet base 22, described two magnet bases rely on its magnetic to be adsorbed on respectively on the internal face of the mounting hole on flange 1, the flange 24 of pressure resistant vessel, particularly, flange 1, flange 24 are respectively shell flange, the cylinder cap flange of pressure resistant vessel, form butt-end packing be connected between flange 1 and flange 24 by O RunddichtringO 12, fixed support 5 is affixed with magnet base 1, one end of short spring leaf 6 and long spring leaf 7 is installed on fixed support 5, the other end of short spring leaf 6 and long spring leaf 7 suspends, and all radially extensions along described two flanges are held in suspending of short spring leaf 6 and long spring leaf 7, the both sides of short spring leaf 6 stiff ends and long spring leaf 7 stiff ends are equipped with a foil gauge 8, two foil gauges 8 on two foil gauges 8 and long spring leaf 7 on short spring leaf 6 are half-bridge and connect, and two foil gauges 8 on two foil gauges 8 and long spring leaf 7 on short spring leaf 6 are along the axial stickup of described two flanges, pushing tow support 9 is installed on magnet base 22, pushing tow support 9 is provided with along described two flange shaft to two pushing tow pin 91 that protrude, in two pushing tow pin 91 one with the end butt that suspends of short spring leaf 6, the end butt that suspends of another in two pushing tow pin 91 and long spring leaf 7, the connection wire 10 of four foil gauges 8 leads to external dynamic strainmeter 13 through underwater electrical connector 11, and underwater electrical connector 11 is located on arbitrary flange of described two flanges.
Particularly, see Fig. 1, Fig. 2, described fixed support 5 is with right-angle structure, fixed support 5 is close on magnet base 1 by described right-angle structure, and the axial plate of described right-angle structure and magnet base 1 is affixed by set bolt, all to pass through set bolt affixed with same one end of the radial plate of described right-angle structure in one end of short spring leaf 6 and long spring leaf 7; See Fig. 1, Fig. 3, described pushing tow support 9 is with right-angle structure, pushing tow support 9 is close on magnet base 22 by described right-angle structure, and the axial plate of described right-angle structure and magnet base 22 is affixed by set bolt, and two pushing tow pin 91 are located in the radial plate of described right-angle structure.So-called " axially ", " radially ", refer to respectively described two flanges axially, radially.And, for rigging position, pushing tow support 9 rigging position on magnet base two 2 of fine-tuning fixed support 5 on magnet base 1, described in the axial plate of right-angle structure, pushing tow support 9, on the axial plate of right-angle structure, be equipped with the mounting hole coordinating with set bolt described in fixed support 5.
Measuring process of the present invention is as follows:
See Fig. 1, when initial installation, pass through the setting of the axial spacing of magnet base 1 and magnet base 22, two pushing tow pin 91 that make pushing tow support 9 are the end that suspends of the short spring leaf 6 of pushing tow and long spring leaf 7 respectively, utilize the jacking force of pushing tow pin 91 to guarantee that two spring leafs produce certain prebuckling (bending within the scope of the linear elasticity of spring leaf), in the process increasing gradually in pressure resistant vessel internal water pressure, due to the effect of axial load, the flange sealing surface of pressure resistant vessel opens gradually, distance between magnet base 1 and magnet base 22 increases along with opening of flange sealing surface, thereby the distance between fixed support 5 and pushing tow support 9 is increased gradually, short spring leaf 5 reduces gradually with the flexural deformation of long spring leaf 6, application external dynamic strainmeter 13 and computer control system gather the strain output of described two spring leaf stiff ends, according to the strain of semi-girder---amount of deflection relation function, utilize the strain output data of described two spring leaf stiff ends, can obtain the amount of opening of pressure resistant vessel flange sealing surface.Because described two flanges are fixedly connected with, therefore under the Axial Loads of pressure resistant vessel inner high voltage water, the path of opening of flange sealing surface is not simple along flange shaft to opening, open but present " V " font with certain opening angle, therefore, the present invention further adopts that one is long and the other is short, and two spring leafs are measured, the displacement of the measurement by long and short two spring leafs and the displacement difference of the two, not only can measure flange sealing surface under test pressure along flange shaft to the actual amount of opening, and can measure the opening angle of flange sealing surface.
The present invention is by by one is long and the other is short, two spring leafs are arranged to the cantilevered fashion that prebuckling is out of shape, by the strain variation amount of measurement described two spring leafs under the effect of the axial load of pressure resistant vessel inner high voltage aqueous medium, and according to the funtcional relationship between the strain of semi-girder and amount of deflection, can realize the real-time measurement of the actual amount of opening to flange sealing surface in pressure resistant vessel inner high voltage water environment.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention, referring to claim, within protection scope of the present invention, can be done any type of modification.
Claims (3)
1. the measurement mechanism of the flange sealing surface amount of opening, it is characterized in that: comprise magnet base one (1) and magnet base two (2), described two magnet bases rely on its magnetic to be adsorbed on respectively on the internal face of the mounting hole on flange one (3), the flange two (4) of pressure resistant vessel, and flange one (3) is tightly connected with flange two (4), fixed support (5) is affixed with magnet base one (1), one end of short spring leaf (6) and long spring leaf (7) is installed on fixed support (5), the other end of short spring leaf (6) and long spring leaf (7) suspends, and all along the radially extension of described two flanges, the both sides of short spring leaf (6) stiff end and long spring leaf (7) stiff end are equipped with a foil gauge (8), two foil gauges (8) on two foil gauges (8) and long spring leaf (7) on short spring leaf (6) are half-bridge and connect, and two foil gauges (8) on two foil gauges (8) and long spring leaf (7) on short spring leaf (6) are along the axial stickup of described two flanges, pushing tow support (9) is installed on magnet base two (2), pushing tow support (9) is provided with along described two flange shaft to two the pushing tow pin (91) that protrude, in described two pushing tow pin (91) one with the end butt that suspends of short spring leaf (6), the end butt that suspends of another in described two pushing tow pin (91) and long spring leaf (7), the connection wire (10) of described four foil gauges (8) is drawn through underwater electrical connector (11).
2. by the measurement mechanism of the flange sealing surface amount of opening claimed in claim 1, it is characterized in that: described fixed support (5) is with right-angle structure, fixed support (5) is close on magnet base one (1) by described right-angle structure, and the axial plate of described right-angle structure and magnet base one (1) are affixed, one end of short spring leaf (6) and long spring leaf (7) is all affixed with same one end of the radial plate of described right-angle structure.
3. by the measurement mechanism of the flange sealing surface amount of opening described in claim 1 or 2, it is characterized in that: described pushing tow support (9) is with right-angle structure, pushing tow support (9) is close on magnet base two (2) by described right-angle structure, and the axial plate of described right-angle structure and magnet base two (2) are affixed, and two pushing tow pin (91) are located in the radial plate of described right-angle structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107762.1A CN103868443B (en) | 2014-03-21 | 2014-03-21 | Device for measuring opening degree of sealing faces of flanges |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107762.1A CN103868443B (en) | 2014-03-21 | 2014-03-21 | Device for measuring opening degree of sealing faces of flanges |
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| Publication Number | Publication Date |
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| CN103868443A true CN103868443A (en) | 2014-06-18 |
| CN103868443B CN103868443B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410107762.1A Expired - Fee Related CN103868443B (en) | 2014-03-21 | 2014-03-21 | Device for measuring opening degree of sealing faces of flanges |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747800A (en) * | 2015-04-01 | 2015-07-01 | 上海市政建设有限公司 | Articulated pipe stretching quantity control device and method of curve steel jacking pipe |
| CN107063072A (en) * | 2017-05-09 | 2017-08-18 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Plant equipment contact surface opening displacement measurement apparatus and its measuring method |
| CN109570739A (en) * | 2019-02-12 | 2019-04-05 | 黄山学院 | A kind of new equipment deformed for controlling Friction Stir Welding |
| CN110567358A (en) * | 2019-08-26 | 2019-12-13 | 中国美术学院 | Method and device for measuring diameter by double-acting cantilever beam sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205394U (en) * | 1985-12-11 | 1986-08-27 | 重庆大学 | Two-way (electronic and mechanical) ball-socket type extensometer |
| GB2292226A (en) * | 1994-08-02 | 1996-02-14 | Grace W R & Co | Detecting the build-up of deposits in a manufacturing plant |
| CN2669133Y (en) * | 2003-12-19 | 2005-01-05 | 长安大学 | Double cantilever concrete structure strain measuring meter |
| CN201053910Y (en) * | 2007-06-22 | 2008-04-30 | 上海宇泽机电设备有限公司 | Tension detector |
| CN101344372A (en) * | 2008-08-18 | 2009-01-14 | 山东大学 | Miniature built-in cantilever beam type displacement gage used for geomechanics model experiment |
-
2014
- 2014-03-21 CN CN201410107762.1A patent/CN103868443B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205394U (en) * | 1985-12-11 | 1986-08-27 | 重庆大学 | Two-way (electronic and mechanical) ball-socket type extensometer |
| GB2292226A (en) * | 1994-08-02 | 1996-02-14 | Grace W R & Co | Detecting the build-up of deposits in a manufacturing plant |
| CN2669133Y (en) * | 2003-12-19 | 2005-01-05 | 长安大学 | Double cantilever concrete structure strain measuring meter |
| CN201053910Y (en) * | 2007-06-22 | 2008-04-30 | 上海宇泽机电设备有限公司 | Tension detector |
| CN101344372A (en) * | 2008-08-18 | 2009-01-14 | 山东大学 | Miniature built-in cantilever beam type displacement gage used for geomechanics model experiment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747800A (en) * | 2015-04-01 | 2015-07-01 | 上海市政建设有限公司 | Articulated pipe stretching quantity control device and method of curve steel jacking pipe |
| CN107063072A (en) * | 2017-05-09 | 2017-08-18 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Plant equipment contact surface opening displacement measurement apparatus and its measuring method |
| CN109570739A (en) * | 2019-02-12 | 2019-04-05 | 黄山学院 | A kind of new equipment deformed for controlling Friction Stir Welding |
| CN109570739B (en) * | 2019-02-12 | 2024-05-28 | 黄山学院 | Novel device for controlling friction stir welding deformation |
| CN110567358A (en) * | 2019-08-26 | 2019-12-13 | 中国美术学院 | Method and device for measuring diameter by double-acting cantilever beam sensor |
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| CN103868443B (en) | 2017-01-18 |
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