CN109322659A - A kind of oil/gas well inner wall of the pipe cleaning measuring device - Google Patents
A kind of oil/gas well inner wall of the pipe cleaning measuring device Download PDFInfo
- Publication number
- CN109322659A CN109322659A CN201811158906.0A CN201811158906A CN109322659A CN 109322659 A CN109322659 A CN 109322659A CN 201811158906 A CN201811158906 A CN 201811158906A CN 109322659 A CN109322659 A CN 109322659A
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- Prior art keywords
- fixedly connected
- screw rod
- oil
- gas well
- wall
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/08—Measuring diameters or related dimensions at the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a kind of oil/gas well inner wall of the pipes to clear up measuring device, including mounting plate, support plate, stiffening plate, fixed link, lantern ring, the first screw rod, baffle, motor, pedestal, rotating bar, roller, fixed plate, fixing bolt, screw thread turntable, link slot, connecting cylinder, the first graduation mark, sliding bar, the second graduation mark, annular groove, fixed column, the second screw rod, rotor plate, level board, reinforcing rib, link block, sliding slot, coulisse, spring, sliding block, mobile bar, woollen brush base and hairbrush.This kind of oil/gas well inner wall of the pipe cleaning measuring device structure is simple, novel in design, under the action of the fixation measuring mechanism of setting, convenient for fixation measuring mechanism stable is fixed on oil/gas well port, it is measured simultaneously convenient for carrying out aperture size to oil/gas well port, ensure that the first screw rod stable rotation is passed through, and when in use, passes through the cleaning mechanism of setting simultaneously, substance convenient for adsorbing to oil/gas well inner wall is cleared up, and is easy to use.
Description
Technical field
The present invention relates to a kind of cleaning measuring device, specifically a kind of oil/gas well inner wall of the pipe clears up measuring device, belongs to
Clear up measuring device applied technical field.
Background technique
Oil-Gas Well Engineering belongs to Oil and Natural Gas Engineering first level discipline.Oil/gas well is mankind's exploration and development underground stone
Oil and the essential information of natural gas resource and substance channel.Oil-Gas Well Engineering is the construction around oil/gas well, measurement and is prevented
The fund and technology-intensive engineering protected and implemented, mainly including oil-gas exploration and development drilling well and Well Completion Engineering of Oil Reservoirs, oil gas well measurements
It is the basic link of oil-gas exploration and development with testing engineering and oil/gas well protection and recovery project etc..
After the installation of oil gas well conduit, worker is needed to measure the pore size of oil gas well conduit, is convenient for work
Author carries out relevant operation to oil/gas well pipeline opening, at the same some oil gas well conduits after mounting inner wall can adsorb it is more miscellaneous
Matter influences the clean of oil/gas well inner wall of the pipe, needs manually to be cleared up, working efficiency can be greatly reduced, influence use process.
Therefore, a kind of oil/gas well inner wall of the pipe cleaning measuring device is proposed regarding to the issue above.
Summary of the invention
The object of the invention is that providing a kind of oil/gas well inner wall of the pipe cleaning measurement dress to solve the above-mentioned problems
It sets.
The present invention is achieved through the following technical solutions above-mentioned purpose, and a kind of oil/gas well inner wall of the pipe clears up measuring device,
Including mounting plate, support plate, pedestal, driving mechanism, fixation measuring mechanism and cleaning mechanism；
The mounting plate opposite sides is fixedly connected with support plate, and support plate bottom is fixedly connected with pedestal；The bottom
It is fixedly connected with rotating bar in the placing groove that seat bottom surface offers, and rotating bar surface is socketed with roller；The pedestal one
Side is fixedly connected with fixed plate, and fixed plate surface is threaded with fixing bolt；The support plate side by stiffening plate with
Mounting plate bottom is fixedly connected；The mounting plate is fixedly connected by fixed link with lantern ring, and lantern ring internal screw thread is connected with first
Screw rod；First screw tip is fixedly connected with baffle, and the first screw rod bottom end is fixedly connected with link block；
The driving mechanism includes motor, screw thread disk and the first screw rod, and motor is mounted on mounting plate bottom table
Face；The motor output end is connected with the screw thread turntable connecting with the first screw flight；
The fixation measuring mechanism includes connecting cylinder, the second screw rod, sliding bar and rotor plate, and fixed at the top of connecting cylinder
It is connected with fixed column；The fixed column is fixedly connected by being fixedly connected on the fixed cylinder of mounting plate bottom, and fixed cylinder bottom end
Side surface is threaded with fastening bolt；Running through in the middle part of the connecting cylinder has the first screw rod, and connecting cylinder outer surface is equipped with first
Graduation mark；The connecting cylinder both ends are threaded with the second screw rod, and second screw rod one end side surface is fixedly connected with rotor plate；
The rotation plate surface offers annular groove, and engaging slidably connects sliding bar one end in annular groove；The sliding bar is another
In the link slot that end is offered with connecting cylinder inner wall, and sliding bar surface offers the second graduation mark；
The cleaning mechanism includes link block, mobile bar, woollen brush base and hairbrush, and link block opposite flank offers
Sliding slot；Spring is equipped in the sliding slot, and spring one end is fixedly connected with the mobile bar being slidably connected with sliding slot；The mobile bar
One end is fixedly connected with woollen brush base, and woollen brush base side is fixedly connected with hairbrush；The link block surface is offered to be connected with sliding slot
Logical coulisse, and the sliding block being fixedly connected with mobile bar is slidably connected in coulisse；It is fixedly connected with and adds at the top of the link block
Strengthening tendons, and reinforcing rib is fixedly connected with the level board for being fixedly connected on the first screw surface.
Preferably, the support plate number is two, and to be fixedly connected on mounting plate bottom in parallel opposite for two support plates
Side surface.
Preferably, fixed plate is run through in the fixing bolt end.
Preferably, screw thread turntable outer surface is equipped with external screw thread, and screw thread turntable passes through the external screw thread of outer surface and the
The connection of one screw flight.
Preferably, it is placed in parallel between the second screw rod and the sliding bar of connecting cylinder the same side connection.
Preferably, the second screw rod number is two, and symmetrical about the first screw rod between the second screw rod.
Preferably, one end that the sliding bar is connect with annular groove is one centimetre away from another side surface of the rotor plate.
Preferably, the reinforcing rib number is two, and reinforcing rib is symmetrical about first screw rod.
Preferably, it the face where the connecting cylinder axis, the face where the link block and is placed in parallel between horizontal plane.
Preferably, the hairbrush number is two, and hairbrush is symmetrical about the connecting cylinder.
The beneficial effects of the present invention are:
1. this kind of oil/gas well inner wall of the pipe cleaning measuring device structure is simple, novel in design, pass through the fixation measuring of setting
Under the action of mechanism, convenient for fixation measuring mechanism stable is fixed on oil/gas well port, while convenient for being carried out to oil/gas well port
Aperture size measures, while ensureing that the first screw rod stable rotation is passed through, and is conducive to use.
2. the substance convenient for adsorbing to oil/gas well inner wall is cleared up when in use, by the cleaning mechanism of setting, ensure
Oil/gas well inner wall it is clean, while improving fixation measuring mechanism to the measurement accuracy of oil/gas well port, be easy to use.
3. when in use, realize the first screw rod of motor drive screw thread driven by rotary disc rotation, realize to oil/gas well inner wall into
The automatic cleaning of row, reduces labor intensity, while ensureing the stable downslide during rotation of the first screw rod, improves the first screw rod and uses
Stability, practical value is higher, be suitble to promote the use of.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is partial enlargement structural representation at A in Fig. 1 of the present invention；
Fig. 3 is rotor plate side surface of the present invention structural schematic diagram；
Fig. 4 is present invention slider and link block attachment structure schematic diagram；
Fig. 5 is base bottom surface texture schematic diagram of the present invention.
In figure: 1, mounting plate, 2, support plate, 3, stiffening plate, 4, fixed link, 5, lantern ring, the 6, first screw rod, 7, baffle, 8,
Motor, 9, pedestal, 10, rotating bar, 11, roller, 12, fixed plate, 13, fixing bolt, 14, screw thread turntable, 1401, connection
Slot, 15, connecting cylinder, the 1501, first graduation mark, 16, sliding bar, the 1601, second graduation mark, 17, annular groove, 18, fixed column,
19, the second screw rod, 20, rotor plate, 21, level board, 22, reinforcing rib, 23, link block, 2301, sliding slot, 2302, coulisse, 24, bullet
Spring, 25, sliding block, 26, mobile bar, 27, woollen brush base, 28, hairbrush.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1-5, a kind of oil/gas well inner wall of the pipe cleaning measuring device, including mounting plate 1, support plate 2, bottom
Seat 9, driving mechanism, fixation measuring mechanism and cleaning mechanism；
1 opposite sides of mounting plate is fixedly connected with support plate 2, and 2 bottom of support plate is fixedly connected with pedestal 9；Institute
It states and is fixedly connected with rotating bar 10 in the placing groove that 9 bottom surface of pedestal offers, and 10 surface of rotating bar is socketed with roller 11,
The roller 11 of setting, it is easy to remove；9 side of pedestal is fixedly connected with fixed plate 12, and 12 surface of fixed plate is threadedly coupled
There are fixing bolt 13, the fixing bolt 13 of setting, convenient for the fixation of fixed plate 12；2 side of support plate by stiffening plate 3 with
1 bottom of mounting plate is fixedly connected；The mounting plate 1 is fixedly connected by fixed link 4 with lantern ring 5, and 5 internal screw thread of lantern ring is connected with
First screw rod 6, the lantern ring 5 of setting stablize movement convenient for the first screw rod 6；First screw rod, 6 top is fixedly connected with baffle
7, and 6 bottom end of the first screw rod is fixedly connected with link block 23；
The driving mechanism includes motor 8, screw thread disk and the first screw rod 6, and motor 8 is mounted on 1 bottom of mounting plate
Portion surface, the motor 8 of setting rotate convenient for driving screw thread turntable 14；8 output end of motor is connected with and the first screw rod
The 6 screw thread turntables 14 being threadedly coupled；
The fixation measuring mechanism includes connecting cylinder 15, the second screw rod 19, sliding bar 16 and rotor plate 20, and connecting cylinder
15 tops are fixedly connected with fixed column 18；The fixed column 18 connects by the way that the fixed cylinder for being fixedly connected on 1 bottom of mounting plate is fixed
It connects, and fixed cylinder bottom end side surface is threaded with fastening bolt；Running through in the middle part of the connecting cylinder 15 has the first screw rod 6, and even
15 outer surface of connect cylinder is equipped with the first graduation mark 1501；15 both ends of connecting cylinder are threaded with the second screw rod 19, and the second spiral shell
19 one end side surface of bar is fixedly connected with rotor plate 20；20 surface of rotor plate offers annular groove 17, and in annular groove 17
Engaging slidably connects 16 one end of sliding bar, the annular groove 17 of setting, convenient for the sliding of sliding bar 16；The sliding bar 16 is another
In the link slot 1401 that end is offered with 15 inner wall of connecting cylinder, and 16 surface of sliding bar offers the second graduation mark 1601；
The cleaning mechanism includes link block 23, mobile bar 26, woollen brush base 27 and hairbrush 28, and 23 opposite side of link block
Surface offers sliding slot 2301；It is equipped with spring 24 in the sliding slot 2301, and 24 one end of spring is fixedly connected with and sliding slot 2301
The mobile bar 26 being slidably connected；Described 26 one end of mobile bar is fixedly connected with woollen brush base 27, and 27 side of woollen brush base is fixedly connected
There is hairbrush 28, the hairbrush 28 of setting is cleared up convenient for oil/gas well inner wall of the pipe；23 surface of link block offers and sliding slot 2301
The coulisse 2302 of connection, and the sliding block 25 being fixedly connected with mobile bar 26 is slidably connected in coulisse 2302；The link block 23
Top is fixedly connected with reinforcing rib 22, and reinforcing rib 22 is fixedly connected with the level board 21 for being fixedly connected on 6 surface of the first screw rod,
The reinforcing rib 22 of setting, convenient for the connection of level board 21 and link block 23.
2 number of support plate is two, and two support plates 2 are fixedly connected on 1 bottom opposite side table of mounting plate in parallel
Face is easily installed plate 1 and is supported by support plate 2；Fixed plate 12 is run through in 13 end of fixing bolt., convenient for fixed plate 12
It is fixed；14 outer surface of screw thread turntable is equipped with external screw thread, and screw thread turntable 14 passes through the external screw thread and the first screw rod 6 of outer surface
It is threadedly coupled, drives the rotation of the first screw rod 16 convenient for screw thread turntable 14；Second screw rod 19 of 15 the same side of connecting cylinder connection
And be placed in parallel between the sliding bar 16, convenient for being measured to oil/gas well inner wall aperture；Second screw rod, 19 number
It is two, and symmetrical about the first screw rod 6 between the second screw rod 19, stablizes convenient for the second screw rod 19 and place；The sliding
One end that bar 16 is connect with annular groove 17 is one centimetre away from another side surface of the rotor plate 20, convenient for calculating after measurement, is convenient for
It uses；22 number of reinforcing rib is two, and reinforcing rib 22 is symmetrical about first screw rod 6, improves the first screw rod
Effect is placed in 16 stablize；It face where 15 axis of connecting cylinder, the face where the link block 23 and is put down between horizontal plane
Row is placed, and is ensured and is placed compact between connecting cylinder 15 and link block 23, is easy to use；28 number of hairbrush is two, and hair
Brush 28 is symmetrical about the connecting cylinder 15, improves the cleaning effect of oil gas wellhole inner wall.
In the use of the present invention, the external control switch of the electric elements in the device and power supply are passed through fixation first
Bolt 13 carries out the fixed plate 12 that 9 side of pedestal is fixedly connected to stablize fixation, and by starting motor 8, motor 8 drives spiral shell
During line turntable 14 drives the first screw rod 6 to be rotated by screw thread turntable 14, while the first screw rod 6 rotates it is vertical under
Drop, when hairbrush 28 is moved to oil/gas well port, by manual sliding slider 25, makes mobile bar 26 slide into connecting cylinder 15
Interior, rotating the first screw rod 6 manually is moved to hairbrush 28 in oil/gas well port, and then is again started up motor 8, and motor 8 is logical
Screw thread turntable 14 of overdriving drives the rotation of the first screw rod 6, is driven by the first screw rod 6 and is then placed on by adjusting connecting cylinder 15
In the oil/gas well pipe end for needing to clean, fixed link 4 is tightly fastened by fastening bolt with fixed cylinder, ensures connection
Cylinder 15, which is stablized, to be placed, and then by rotation rotor plate 20, rotor plate 20 drives the second screw rod 19 to be rotated, passes through the second screw rod
19 fit closely rotor plate 20 and oil/gas well port inner wall, then by observing the elongation of the sliding bar 16 of bottom end,
The pore size for calculate oil/gas well port, to complete the cleaning of oil/gas well port.
The Y2 motor that motor 8 is sold using constant speed Pty Ltd, support circuit can be provided by businessman.
It is related to circuit and electronic component and module is the prior art, those skilled in the art may be implemented completely,
Without superfluous words, the content that the present invention protects is not related to the improvement for software and method yet.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that by fall in claim with all in the meaning and scope of important document
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of oil/gas well inner wall of the pipe clears up measuring device, it is characterised in that: including mounting plate (1), support plate (2), pedestal
(9), driving mechanism, fixation measuring mechanism and cleaning mechanism；Mounting plate (1) opposite sides is fixedly connected with support plate
(2), and support plate (2) bottom is fixedly connected with pedestal (9)；It is fixed in the placing groove that pedestal (9) bottom surface offers
It is connected with rotating bar (10), and rotating bar (10) surface is socketed with roller (11)；Pedestal (9) side is fixedly connected with fixation
Plate (12), and fixed plate (12) surface is threaded with fixing bolt (13)；Support plate (2) side passes through stiffening plate (3)
It is fixedly connected with mounting plate (1) bottom；The mounting plate (1) is fixedly connected by fixed link (4) with lantern ring (5), and lantern ring (5)
Internal screw thread is connected with the first screw rod (6)；First screw rod (6) top is fixedly connected with baffle (7), and the first screw rod (6) bottom
End is fixedly connected with link block (23)；The driving mechanism includes motor (8), screw thread disk and the first screw rod (6), and electronic
Machine (8) is mounted on mounting plate (1) bottom surface；Motor (8) output end is connected with to be threadedly coupled with the first screw rod (6)
Screw thread turntable (14)；The fixation measuring mechanism includes connecting cylinder (15), the second screw rod (19), sliding bar (16) and rotor plate
(20), fixed column (18) and at the top of connecting cylinder (15) are fixedly connected with；The fixed column (18) is by being fixedly connected on mounting plate
(1) fixed cylinder of bottom is fixedly connected, and fixed cylinder bottom end side surface is threaded with fastening bolt；In the connecting cylinder (15)
Portion, which is run through, to be had the first screw rod (6), and connecting cylinder (15) outer surface is equipped with the first graduation mark (1501)；Connecting cylinder (15) both ends
It is threaded with the second screw rod (19), and the second screw rod (19) one end side surface is fixedly connected with rotor plate (20)；The rotation
Plate (20) surface offers annular groove (17), and engaging slidably connects sliding bar (16) one end in annular groove (17)；The cunning
In the link slot (1401) that lever (16) other end and connecting cylinder (15) inner wall offer, and sliding bar (16) surface offers the
Two graduation marks (1601)；The cleaning mechanism includes link block (23), mobile bar (26), woollen brush base (27) and hairbrush (28),
And link block (23) opposite flank offers sliding slot (2301)；Spring (24) are equipped in the sliding slot (2301), and spring
(24) one end is fixedly connected with the mobile bar (26) being slidably connected with sliding slot (2301)；Described mobile bar (26) one end is fixedly connected
Have woollen brush base (27), and woollen brush base (27) side is fixedly connected with hairbrush (28)；Link block (23) surface offers and slides
The coulisse (2302) of slot (2301) connection, and the sliding block being fixedly connected with mobile bar (26) is slidably connected in coulisse (2302)
(25)；It is fixedly connected with reinforcing rib (22) at the top of the link block (23), and reinforcing rib (22) and is fixedly connected on the first screw rod
(6) level board (21) on surface is fixedly connected.
2. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the support plate
(2) number is two, and two support plates (2) are fixedly connected on mounting plate (1) bottom opposite flank in parallel.
3. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the fixed spiral shell
Fixed plate (12) are run through in bolt (13) end.
4. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the screw thread turns
Disk (14) outer surface is equipped with external screw thread, and screw thread turntable (14) is threadedly coupled by the external screw thread of outer surface with the first screw rod (6).
5. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the connecting cylinder
(15) it is placed in parallel between the second screw rod (19) and the sliding bar (16) of the same side connection.
6. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: second spiral shell
Bar (19) number is two, and symmetrical about the first screw rod (6) between the second screw rod (19).
7. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the sliding bar
(16) one end connecting with annular groove (17) is one centimetre away from the rotor plate (20) another side surface.
8. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the reinforcing rib
(22) number is two, and reinforcing rib (22) is symmetrical about first screw rod (6).
9. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the connecting cylinder
(15) it the face where axis, the face where the link block (23) and is placed in parallel between horizontal plane.
10. a kind of oil/gas well inner wall of the pipe according to claim 1 clears up measuring device, it is characterised in that: the hairbrush
(28) number is two, and hairbrush (28) is symmetrical about the connecting cylinder (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158906.0A CN109322659A (en) | 2018-09-30 | 2018-09-30 | A kind of oil/gas well inner wall of the pipe cleaning measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158906.0A CN109322659A (en) | 2018-09-30 | 2018-09-30 | A kind of oil/gas well inner wall of the pipe cleaning measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109322659A true CN109322659A (en) | 2019-02-12 |
Family
ID=65266541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811158906.0A Pending CN109322659A (en) | 2018-09-30 | 2018-09-30 | A kind of oil/gas well inner wall of the pipe cleaning measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109322659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827634A (en) * | 2019-02-20 | 2019-05-31 | 嘉兴勤慎智能技术有限公司 | A kind of liquid level sensor |
| CN113198809A (en) * | 2021-05-18 | 2021-08-03 | 段宇航 | Bellows inner wall cleaning device |
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| US4407071A (en) * | 1980-01-31 | 1983-10-04 | Rheinmetall Gmbh | Internal diameter measuring device for pipes |
| US4547970A (en) * | 1984-08-03 | 1985-10-22 | Brewster Albert L | Thread anvils for inside micrometer |
| EP1887311A2 (en) * | 2006-08-12 | 2008-02-13 | Ulrich Breitmeier | Method for measuring the micro structure of the surfaces of cylinder drill hoes and measuring device for performing the measuring method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827634A (en) * | 2019-02-20 | 2019-05-31 | 嘉兴勤慎智能技术有限公司 | A kind of liquid level sensor |
| CN109827634B (en) * | 2019-02-20 | 2020-06-05 | 昆山金之光电子科技有限公司 | Liquid level sensor |
| CN113198809A (en) * | 2021-05-18 | 2021-08-03 | 段宇航 | Bellows inner wall cleaning device |
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Application publication date: 20190212 |