CN109959321B - Device for measuring distance and angle of sealing surface of valve seat of nuclear-grade gate valve - Google Patents
Device for measuring distance and angle of sealing surface of valve seat of nuclear-grade gate valve Download PDFInfo
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- CN109959321B CN109959321B CN201711403545.7A CN201711403545A CN109959321B CN 109959321 B CN109959321 B CN 109959321B CN 201711403545 A CN201711403545 A CN 201711403545A CN 109959321 B CN109959321 B CN 109959321B
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- magnetic
- seat
- valve
- sliding rail
- sliding
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- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 230000005291 magnetic effect Effects 0.000 claims abstract description 68
- 238000005259 measurement Methods 0.000 claims description 11
- 230000005294 ferromagnetic effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 241001391944 Commicarpus scandens Species 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000013507 mapping Methods 0.000 abstract description 8
- 230000005855 radiation Effects 0.000 abstract description 6
- 238000011109 contamination Methods 0.000 abstract description 4
- 230000002285 radioactive effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
Abstract
The invention belongs to the technical field of nuclear power station overhaul, in particular to a device for measuring the spacing and angle of valve seat sealing surfaces of a nuclear-grade gate valve, which aims at overcoming the defects of the conventional measuring method for the spacing of the valve seat sealing surfaces of a common gate valve, provides a measuring device capable of meeting the spacing of the valve seat sealing surfaces of the gate valve with radioactive contamination and nuclear grade, and provides a practical measuring means for the included angle of the sealing surfaces, and is characterized in that: the magnetic valve comprises a sliding rail, a sliding block, a valve seat joint surface, a pointer, a sliding rail connecting arm, a magnetic seat, a rotary handle and a magnet. The invention obviously improves the precision of measuring the distance between valve seats of the nuclear gate valve and meets the requirement of overhaul standard of nuclear equipment. The device is convenient to use, measures fast, has reduced the time that the mapping personnel exposes under the radiation environment, has reduced the radiation dose that suffers. The device provides an effective means for measuring the included angle of the sealing surface of the valve seat of the nuclear-grade gate valve.
Description
Technical Field
The invention belongs to the technical field of nuclear power station overhaul, and particularly relates to a device for measuring the distance and angle of sealing surfaces of valve seats of nuclear-grade gate valves.
Background
When the valve seat of the gate valve needs to reconstruct the sealing surface of the valve seat due to the defects of cracks, corrosion and the like, the spacing between the sealing surfaces of the valve seat and the included angle of the sealing surfaces need to be mapped. At present, the measurement of the distance between the sealing surfaces of the valve seats of non-nuclear-grade gate valves in a conventional thermal power plant or a chemical plant mostly depends on common measuring tools such as vernier calipers, meter gauges and the like, and the measurement is carried out on gate valves with larger caliber by means of an inner clamp and combining with the meter gauges. For the angle of the sealing surface of the valve seat, no very effective measuring tool is currently seen. Because conventional mapping methods take longer, they can increase radiation damage to mapping personnel when applied to nuclear grade equipment with radioactive contamination.
For mapping of a valve seat sealing surface of a nuclear gate valve with radioactive contamination, the accuracy of the mapping is required to meet the high-accuracy requirement of nuclear equipment, and the mapping time is shortened as much as possible in order to reduce the adverse effect of radiation dose on the health of staff during the mapping.
Disclosure of Invention
The invention aims to provide a measuring device capable of meeting the requirement of the space between sealing surfaces of a valve seat of a gate valve with radioactive contamination and nuclear grade and provides a practical measuring means for the included angle of the sealing surfaces.
The invention is realized in the following way:
the device for measuring the distance and the angle of the sealing surface of the valve seat of the nuclear-grade gate valve comprises a sliding rail, a sliding block, a valve seat attaching surface, a pointer, a sliding rail connecting arm, a magnetic seat, a rotary handle and a magnet; the two sliding rails are oppositely arranged and are movably connected through a sliding rail connecting arm; a valve seat fitting surface is arranged on the outer side end surface of the sliding rail and is used for fitting with a sealing surface of the valve seat; the sliding block is arranged in the sliding rail and slides along the length direction of the sliding rail; the pointer is arranged on the sliding block and used for marking the position of the sealing surface of the valve seat; one of the two sliding rails is movably connected with the magnetic seat through a magnetic seat connecting arm; the rotary handle and the magnet are both arranged on the magnetic base, the rotary handle is movably connected with the magnetic base, and the magnet is fixed on the rotary handle.
The whole sliding rail is cuboid, and an H-shaped sliding groove is formed in the length direction and used for fixedly mounting the sliding block; the joint surface of the valve seat fixed on the sliding rail is a smooth plane, so that the valve seat is convenient to joint with the sealing surface of the valve seat, and the joint mode is that the surfaces coincide.
The shape of the sliding block is matched with the shape of the sliding groove in the sliding rail; four sliding blocks are provided, and two sliding blocks are arranged in each sliding groove; the sliding block realizes the positioning in the sliding rail through the fastening screw, so that the pointer is fixed, and the measurement of the distance between the sealing surfaces of the valve seat is realized.
The whole slide rail connecting arm is rectangular plate-shaped, and the number of the slide rail connecting arm is four, and two slide rail connecting arms are in a group; two ends of each group of sliding rail connecting arms are movably connected with the sliding rail through a first hinge point, and the included angles between the sliding rail connecting arms and the sliding rail are beta and theta; the two slide rail connecting arms of each group are movably connected through a second hinge point, and the included angle between the two slide rail connecting arms is alpha; the sliding rail connecting arm is used for connecting the sliding rail, and the angle of alpha, beta and theta can be fixed through locking the second hinge point, so that the measurement of the clamping angle of the sealing surface of the valve seat can be realized.
The whole magnetic seat connecting arm is rectangular plate-shaped, and the number of the magnetic seat connecting arm is two to three; one end of the magnetic seat connecting arm is movably connected with the sliding rail through a third hinge point, and the other end of the magnetic seat connecting arm is fixedly connected with the magnetic seat through a welding point; the magnetic seat connecting arms are movably connected through universal joints, locking nuts are arranged on the universal joints, the universal joints can be fixed through screwing the locking nuts, and the magnetic seat connecting arms are suitable for field environments and fixed at multiple angles.
The whole magnetic seat is a hollow hexahedron; the rotary handle penetrates through two opposite surfaces of the magnetic seat, one end of the rotary handle extends out of the magnetic seat and is movably connected with the magnetic seat, and the rotary handle rotates by taking the axis of the rotary handle as a shaft; the magnet is positioned in the magnetic seat and rotates along with the rotating handle; through adjusting the rotating handle, the magnetic pole of the magnet faces the ferromagnetic plane and can be firmly attracted and fixed with the ferromagnetic plane, so that the whole device is fixed. As mentioned above, the slide rail, the slide block, the valve seat attaching surface, the pointer, the slide rail connecting arm, the magnetic seat and the rotating handle are all made of aluminum alloy or stainless steel materials, and the magnet is made of an artificial permanent magnet which is not easy to break.
The beneficial effects of the invention are as follows:
the invention obviously improves the precision of the valve seat spacing measurement and meets the maintenance standard requirement of nuclear-grade equipment. The device is convenient to use, measures fast, has reduced the time that the mapping personnel exposes under the radiation environment, has reduced the radiation dose that suffers. The device provides an effective means for measuring the included angle of the sealing surface of the valve seat.
Drawings
FIG. 1 is a front view of an apparatus for nuclear grade gate valve seat seal face spacing, angle measurement of the present invention;
fig. 2 is a top view of an apparatus (without magnetic seat and connecting arm) for measuring the distance and angle between the sealing surfaces of the valve seat of a nuclear gate valve according to the present invention.
Wherein: 1. the magnetic valve comprises a sliding rail, a sliding block, a valve seat joint surface, a pointer, a sliding rail connecting arm, a magnetic seat, a rotary handle, a magnet, a first hinging point, a second hinging point, a third hinging point, a universal joint and a welding point.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1 and 2, a device for measuring the distance and angle between the sealing surfaces of the valve seats of a nuclear-grade gate valve comprises a sliding rail 1, a sliding block 2, a valve seat attaching surface 3, a pointer 4, a sliding rail connecting arm 5, a magnetic seat connecting arm 6, a magnetic seat 7, a rotary handle 8 and a magnet 9. The number of the sliding rails 1 is two, the two sliding rails 1 are oppositely arranged, and the two sliding rails 1 are movably connected through a sliding rail connecting arm 5. The outer end face of the sliding rail 1 is provided with a valve seat fitting face 3 which is used for fitting with a sealing face of a valve seat. The slider 2 is arranged inside the slide rail 1 and slides along the length direction of the slide rail 1. A pointer 4 is mounted on the slider 2 for marking the position of the sealing surface of the valve seat. One of the two slide rails 1 is movably connected with a magnetic seat 7 through a magnetic seat connecting arm 6. The rotating handle 8 and the magnet 9 are arranged on the magnetic base 7, the rotating handle 8 is movably connected with the magnetic base 7, and the magnet 9 is fixed on the rotating handle 8.
The whole sliding rail 1 is cuboid, and an H-shaped sliding groove is formed in the length direction and used for fixedly mounting the sliding block 2. The valve seat joint surface 3 fixed on the slide rail 1 is a smooth plane, is convenient to joint with the sealing surface of the valve seat, and is in a joint mode of surface-to-surface coincidence.
The shape of the sliding block 2 is matched with the shape of a sliding groove in the sliding rail 1. Four sliding blocks 2 are provided, and two sliding blocks 2 are arranged in each sliding groove. The slide block 2 is positioned in the slide rail 1 by fastening screws, so that the pointer 4 is fixed, and the distance between the sealing surfaces of the valve seat is measured.
The whole slide rail connecting arm 5 is rectangular plate-shaped, and four slide rail connecting arms are provided, and two slide rail connecting arms are combined into a group. Two ends of each group of slide rail connecting arms 5 are movably connected with the slide rail 1 through a first hinge point D, and the included angles between the slide rail connecting arms 5 and the slide rail 1 are beta and theta. The two slide rail connecting arms 5 of each group are movably connected through a second hinge point E, and an included angle between the two slide rail connecting arms 5 is alpha. The slide rail connecting arm 5 is used for connecting the slide rail 1, and is also used for fixing angles of alpha, beta and theta, so that the measurement of the clamping angle of the sealing surface of the valve seat is realized.
The magnetic seat connecting arms 6 are in a rectangular plate shape as a whole, and are two to three in number. One end of the magnetic seat connecting arm 6 is movably connected with the sliding rail 1 through a third hinge point F, and the other end is fixedly connected with the magnetic seat 7 through a welding point H. The magnetic seat connecting arms 6 are movably connected in pairs through universal joints G, locking nuts are arranged on the universal joints G, and the universal joints can be fixed by screwing the locking nuts, so that the magnetic seat connecting arms are suitable for field environments and fixed at multiple angles.
The magnetic base 7 is a hollow hexahedron as a whole. The rotating handle 8 penetrates through two opposite surfaces of the magnetic seat 7, one end of the rotating handle extends out of the magnetic seat 7 and is movably connected with the magnetic seat 7 to rotate by taking the axis of the rotating handle as a shaft. The magnet 9 is positioned inside the magnetic base 7 and rotates along with the rotating handle 8. The rotating handle 8 is rotated by 90 degrees clockwise, so that the magnetic poles of the magnet 9 face the ferromagnetic plane, and the magnet can be firmly attracted and fixed with the ferromagnetic plane, thereby realizing the fixation of the whole device.
In this embodiment, the sliding rail 1, the sliding block 2, the valve seat attaching surface 3, the pointer 4, the sliding rail connecting arm 5, the magnetic seat connecting arm 6, the magnetic seat 7 and the rotating handle 8 are all made of aluminum alloy or stainless steel materials, and the magnet 9 is made of an artificial permanent magnet which is not easy to break.
The invention discloses a method for measuring the distance and angle between sealing surfaces of a valve seat of a nuclear-grade gate valve, which is realized by the device of the invention and specifically comprises the following steps:
step one: the rotating handle 8 is rotated clockwise by 90 degrees, so that the magnetic poles of the magnet 9 face the working surface, the magnetic base 7 is firmly attracted to a proper plane on the working site, the purpose is to enable the measuring device to be stable, the measuring device can move and adjust in a small range, and the two universal joints G are slightly locked and are not completely locked. The opening direction of the < alpha > is led to extend downwards into the valve cavity of the nuclear-grade gate valve.
Step two: the valve seat jointing surfaces 3 on two sides of the measuring tool are respectively jointed with the inlet sealing surface and the outlet sealing surface of the valve seat of the nuclear-grade gate valve, and the plane where the measuring tool is positioned is mutually perpendicular to the sealing surfaces on two sides of the valve seat.
Step three: the positions of the slide rails 1 are finely adjusted, so that the valve seat joint surfaces 3 of the two slide rails are respectively overlapped with the highest point and the lowest point of the sealing surfaces of the valve seats of the inlet valve and the outlet valve of the nuclear grade gate valve. After the adjustment is completed, the fastening screw of the second hinge point E is locked, so that the angles of alpha, beta and theta are fixed.
Step four: the universal joint G is fully locked.
Step five: the four sliding blocks 2 are respectively slid along the H-shaped sliding grooves of the sliding rail 1, so that the pointers 4 on the two sliding blocks at the bottom point to the bottommost edges of the sealing surfaces of the inlet valve seat and the outlet valve seat of the nuclear-grade gate valve respectively, and the pointers 4 on the two sliding blocks at the top point to the topmost edges of the sealing surfaces of the inlet valve seat and the outlet valve seat of the nuclear-grade gate valve respectively.
Step six: the four sliding blocks 2 are locked to fix the position of the pointer 4.
Step seven: the rotary handle 8 is rotated anticlockwise by 90 degrees, and the whole measuring tool is taken out for offline measurement.
Step eight: and measuring the distance between the needle tips of the two uppermost slider pointers 4, namely the maximum sealing surface distance value.
Step nine: and measuring the distance between the needle points of the two sliding block pointers 4 at the lowest part, namely the minimum sealing surface distance value.
Step ten: and measuring values of < alpha >, < beta > and < theta >, wherein < beta+ > and < theta- < alpha > are the included angles of the inlet sealing surface and the outlet sealing surface of the nuclear valve.
The embodiment of the present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described in the specification.
Claims (4)
1. A device that is used for nuclear grade gate valve disk seat sealed face interval, angle measurement, its characterized in that: the magnetic valve comprises a sliding rail (1), a sliding block (2), a valve seat attaching surface (3), a pointer (4), a sliding rail connecting arm (5), a magnetic seat connecting arm (6), a magnetic seat (7), a rotary handle (8) and a magnet (9); the two sliding rails (1) are arranged oppositely, and the two sliding rails (1) are movably connected through a sliding rail connecting arm (5); a valve seat attaching surface (3) is arranged on the outer side end surface of the sliding rail (1) and is used for attaching with a sealing surface of a valve seat; the sliding block (2) is arranged in the sliding rail (1) and slides along the length direction of the sliding rail (1); the pointer (4) is arranged on the sliding block (2) and used for marking the position of the sealing surface of the valve seat; one of the two slide rails (1) is movably connected with a magnetic seat (7) through a magnetic seat connecting arm (6); the rotary handle (8) and the magnet (9) are both arranged on the magnetic base (7), the rotary handle (8) is movably connected with the magnetic base (7), and the magnet (9) is fixed on the rotary handle (8);
the whole sliding rail (1) is cuboid, and an H-shaped sliding groove is formed in the length direction and used for fixedly mounting the sliding block (2); the valve seat joint surface (3) fixed on the sliding rail (1) is a smooth plane, so that the valve seat joint surface is convenient to joint with a sealing surface of a valve seat, and the joint mode is that the surfaces are overlapped;
the shape of the sliding block (2) is matched with the shape of a sliding groove in the sliding rail (1); four sliding blocks (2) are provided, and two sliding blocks (2) are arranged in each sliding groove; the sliding block (2) is positioned in the sliding rail (1) through a fastening screw, so that the pointer (4) is fixed, and the measurement of the distance between sealing surfaces of the valve seat is realized;
the whole slide rail connecting arm (5) is rectangular plate-shaped, and four slide rail connecting arms are arranged in total, and two slide rail connecting arms are arranged in a group; two ends of each group of sliding rail connecting arms (5) are movably connected with the sliding rail (1) through a first hinge point (D), and the included angles between the sliding rail connecting arms (5) and the sliding rail (1) are beta and theta; the two slide rail connecting arms (5) of each group are movably connected through a second hinge point (E), and an included angle between the two slide rail connecting arms (5) is alpha; the two groups of slide rail connecting arms (5) are used for connecting the two slide rails (1), and the slide rail connecting arms can be locked by screwing the fastening screw of the second hinge point (E) and the angles of alpha, beta and theta are fixed, so that the measurement of the clamping angle of the sealing surface of the valve seat is realized.
2. The device for measuring the distance and the angle between sealing surfaces of valve seats of nuclear gate valves according to claim 1, wherein: the whole magnetic seat connecting arm (6) is rectangular plate-shaped, and the number of the magnetic seat connecting arm is two to three; one end of the magnetic seat connecting arm (6) is movably connected with the sliding rail (1) through a third hinge point (F), and the other end of the magnetic seat connecting arm is fixedly connected with the magnetic seat (7) through a welding point (H); the magnetic seat connecting arms (6) are movably connected in pairs through universal joints (G), locking nuts are arranged on the universal joints (G), and the universal joints can be fixed by screwing the locking nuts, so that the magnetic seat connecting arms are suitable for field environments and fixed at multiple angles.
3. The device for measuring the distance and the angle between sealing surfaces of valve seats of nuclear gate valves according to claim 1, wherein: the whole magnetic seat (7) is a hollow hexahedron; the rotary handle (8) penetrates through two opposite surfaces of the magnetic seat (7), one end of the rotary handle extends out of the magnetic seat (7), is movably connected with the magnetic seat (7) and rotates by taking the axis of the rotary handle as a shaft; the magnet (9) is positioned in the magnetic seat (7) and rotates along with the rotary handle (8); the rotating handle (8) is rotated by 90 degrees clockwise, so that the magnetic poles of the magnet (9) face to the ferromagnetic plane, and the magnet can be firmly attracted and fixed with the ferromagnetic plane, thereby realizing the fixation of the whole device.
4. The device for measuring the distance and the angle between sealing surfaces of valve seats of nuclear gate valves according to claim 1, wherein: the magnetic valve is characterized in that the sliding rail (1), the sliding block (2), the valve seat attaching surface (3), the pointer (4), the sliding rail connecting arm (5), the magnetic seat connecting arm (6), the magnetic seat (7) and the rotating handle (8) are made of aluminum alloy or stainless steel materials, and the magnet (9) is made of an artificial permanent magnet which is not easy to break.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711403545.7A CN109959321B (en) | 2017-12-22 | 2017-12-22 | Device for measuring distance and angle of sealing surface of valve seat of nuclear-grade gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711403545.7A CN109959321B (en) | 2017-12-22 | 2017-12-22 | Device for measuring distance and angle of sealing surface of valve seat of nuclear-grade gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109959321A CN109959321A (en) | 2019-07-02 |
| CN109959321B true CN109959321B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711403545.7A Active CN109959321B (en) | 2017-12-22 | 2017-12-22 | Device for measuring distance and angle of sealing surface of valve seat of nuclear-grade gate valve |
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| Country | Link |
|---|---|
| CN (1) | CN109959321B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8815106D0 (en) * | 1988-06-24 | 1988-08-03 | Pearce Harvey P R | Apparatus for measuring angle between two adjacent surfaces |
| DE4028650A1 (en) * | 1990-09-10 | 1992-03-12 | Helios Messtechnik | Length measurement unit for CNC operation - has yoke-shaped part withmeasurement edge on slider with motor-driven spindle |
| DE4329976A1 (en) * | 1993-09-04 | 1995-03-09 | Bosch Gmbh Robert | Method for measuring the travel (lift) of a valve and setting a valve |
| FR2793018A1 (en) * | 1999-04-30 | 2000-11-03 | Rami Haidar | Device for measuring the angle between two separated plane surfaces, such as a patients limbs |
| CN101922921A (en) * | 2009-06-11 | 2010-12-22 | 瓦特西拉瑞士股份有限公司 | The method of liner inspection tool and check cylinder liner |
| CN103196345A (en) * | 2012-12-24 | 2013-07-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Seat route measuring device used for vehicle crash test |
| CN104209776A (en) * | 2014-08-13 | 2014-12-17 | 南通高中压阀门有限公司 | Universal fixture for sealing surface of valve body for vertical lathe and clamping method thereof |
| CN204575026U (en) * | 2015-04-02 | 2015-08-19 | 浙江慧仁电子有限公司 | A kind of modified high precision conductive plastics angular displacement sensor |
| CN106197216A (en) * | 2016-07-23 | 2016-12-07 | 殷年久 | A kind of ball bearing radial play measuring method and multiparameter automatic measuring instrument |
| CN207610653U (en) * | 2017-12-22 | 2018-07-13 | 中核核电运行管理有限公司 | It is a kind of for core grade gate valve seat sealing interplanar distance, angle measurement device |
-
2017
- 2017-12-22 CN CN201711403545.7A patent/CN109959321B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8815106D0 (en) * | 1988-06-24 | 1988-08-03 | Pearce Harvey P R | Apparatus for measuring angle between two adjacent surfaces |
| DE4028650A1 (en) * | 1990-09-10 | 1992-03-12 | Helios Messtechnik | Length measurement unit for CNC operation - has yoke-shaped part withmeasurement edge on slider with motor-driven spindle |
| DE4329976A1 (en) * | 1993-09-04 | 1995-03-09 | Bosch Gmbh Robert | Method for measuring the travel (lift) of a valve and setting a valve |
| FR2793018A1 (en) * | 1999-04-30 | 2000-11-03 | Rami Haidar | Device for measuring the angle between two separated plane surfaces, such as a patients limbs |
| CN101922921A (en) * | 2009-06-11 | 2010-12-22 | 瓦特西拉瑞士股份有限公司 | The method of liner inspection tool and check cylinder liner |
| CN103196345A (en) * | 2012-12-24 | 2013-07-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Seat route measuring device used for vehicle crash test |
| CN104209776A (en) * | 2014-08-13 | 2014-12-17 | 南通高中压阀门有限公司 | Universal fixture for sealing surface of valve body for vertical lathe and clamping method thereof |
| CN204575026U (en) * | 2015-04-02 | 2015-08-19 | 浙江慧仁电子有限公司 | A kind of modified high precision conductive plastics angular displacement sensor |
| CN106197216A (en) * | 2016-07-23 | 2016-12-07 | 殷年久 | A kind of ball bearing radial play measuring method and multiparameter automatic measuring instrument |
| CN207610653U (en) * | 2017-12-22 | 2018-07-13 | 中核核电运行管理有限公司 | It is a kind of for core grade gate valve seat sealing interplanar distance, angle measurement device |
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| Publication number | Publication date |
|---|---|
| CN109959321A (en) | 2019-07-02 |
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