CN201803687U - Flange connection type expansion bend measuring instrument for submarine pipes - Google Patents
Flange connection type expansion bend measuring instrument for submarine pipes Download PDFInfo
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- CN201803687U CN201803687U CN2010205410669U CN201020541066U CN201803687U CN 201803687 U CN201803687 U CN 201803687U CN 2010205410669 U CN2010205410669 U CN 2010205410669U CN 201020541066 U CN201020541066 U CN 201020541066U CN 201803687 U CN201803687 U CN 201803687U
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Abstract
The utility model relates to a flange connection type expansion bend measuring instrument for submarine pipes, which comprises a vertical angle meter, a horizontal angle meter, a water level gauge, a tensiometer, a steel wire hoist and a distance measuring steel wire, wherein the vertical angle meter and the horizontal angle meter are vertically fixed into a whole, the water level gauge is fixed on the horizontal angle meter, the distance measuring steel wire is wound on the steel wire hoist, a steel wire collar clamp is arranged on the distance measuring steel wire, one end of the tensiometer is connected with the steel wire hoist, and the horizontal angle meter is fixedly connected with a base. An A dial of the vertical angle meter is sheathed on a vertical shaft in an empty manner, and a pointer on the A dial can measure the angle; and the pointer on the horizontal angle meter can swing on a B dial and measure the horizontal azimuth angle of an expansion bend, and flanges at two ends of a vertical pipe and a flat pipe are butted accurately after underwater adjustment. The measurement is accurate, the pressure test qualification rate of the mounted flanges is high, the construction period is shortened, and the construction cost on the sea is reduced. For example, in a JZ9-3W submarine gas pipe laying project, the construction period can be shortened by 8 days due to the accurate measurement and good mounting effect, the pressure test is qualified.
Description
Technical field
The utility model relates to a kind of measuring instrument, particularly relates to a kind of flange and connects pressure testing qualification rate height, and the duration is short, the curved measuring instrument of flange join type sea tube swelling that the offshore construction cost is low.
Background technology
As everyone knows, along with the develop rapidly of marine oil cause, will have increasing subsea pipeline to be routed to the seabed, this just inevitable association goes out the curved flange of many extra large tube swellings and connects engineering.At present, in project of building up and just preparing to build and sea pipe maintenance items, great majority all exist the curved underwater flange that expands to connect construction problem.The curved flange of so-called extra large tube swelling connects, and is meant the flange that uses various types between jacket riser bottom and the flat pipe of subsea pipeline, and curved peace pipe connects the installation form that connects with expanding.The construction and installation experience in past shows, the operation that the sea curved flange of tube swelling connects most critical is relative tertiary location and azimuthal measurement between the extra large pipe flange, promptly measures various relative tertiary locations and orientation such as distance between riser bottom standpipe flange and the flat pipe flange of sea pipe, angle, the discrepancy in elevation.Have only and measure these data parameters exactly, then according to the setting-out on the workboat deck of these parameters, it is curved to precast the expansion that will install so exactly, thereby make curved can successfully being in place of expanding, and be fastened to tight state, just guarantee the flange pressure testing qualification rate height of being installed.Its result is exactly reduction of erection time greatly, reduces the offshore construction cost greatly.Yet in project in the past, the curved measurement of extra large tube swelling just uses steel ruler to measure the distance (relative position) of two flange faces by the frogman simply, and it is curved just to begin prefabricated above deck expansion then.Owing to do not measure angle (relative orientation) and height (relative relief) between the standpipe end flanges peace pipe end flange, so inaccurate, prefabricated according to this expansion is curved can not install smoothly, its flange face can not coincide, flange connecting blow-by, a pressure testing are just revealed and have to be done over again.The flange that has is repeatedly done over again possibly, thereby causes the duration seriously to postpone, because offshore construction fleet day rate is in hundreds of thousands, up to a million, so, cause heavy economic loss because the measurement of flange is inaccurate.
Summary of the invention
The utility model provides a kind of flange to connect pressure testing qualification rate height for solving the technical matters that exists in the known technology, and the duration is short, the curved measuring instrument of flange join type sea tube swelling that the offshore construction cost is low.
The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is: it is characterized in that: measuring instrument comprises vertical inclinometer, level angle instrument, spirit-leveling instrument, tensiometer, steel wire cucurbit, range finding steel wire, vertical inclinometer and level angle instrument vertical fixing are integral, spirit-leveling instrument is fixed on the level angle instrument, the range finding steel wire is wrapped on the steel wire cucurbit, have clip on the range finding steel wire, one end of tensiometer is connected with the steel wire cucurbit, and the level angle instrument is fixedlyed connected with base.
The utility model can also be by the following technical solutions:
Described vertical inclinometer includes A index dial, sleeve, vertical shaft, vertical angle indicator and A bolt, A index dial and sleeve are fixed together and sky is enclosed within on the vertical shaft, have the A deep-slotted chip breaker on the A index dial, one end of vertical angle indicator is fixed on the A index dial with the A bolt is rotatable, the A screw of vertical angle indicator center fixed is stuck in the A deep-slotted chip breaker, and the other end of vertical angle indicator is connected with the other end of tensiometer;
Described level angle instrument comprises level angle pointer, B index dial, B bolt, B deep-slotted chip breaker and B screw, one end of level angle pointer is fixed on the sleeve, the level angle pointer can be swung on the B index dial, the B screw of level angle instrument center fixed is stuck in the B deep-slotted chip breaker, and the level angle instrument is in the same place by vertical shaft and vertical inclinometer vertical fixing;
Described base is fixed on level angle instrument and the tested flange.
Advantage and the good effect that the utlity model has are: accurately can guarantee the flange pressure testing qualification rate height installed because measure, to have shortened the duration, to have reduced the offshore construction cost.As in the gas transmission line laying project of recent JZ9-3W seabed, used the curved measuring instrument of flange join type sea tube swelling, prefabricated effective with installation, the measurement that the expansion of two places is bent is accurate, connect smoothly under water, the actual construction time has shortened 8 days than plan time, and the pressure testing of underwater flange everywhere is all once qualified, save 1,600,000 yuan of costs, and created condition for this project completes in advance.
Description of drawings
Fig. 1 is the utility model one-piece construction synoptic diagram;
Fig. 2 is measuring instrument and extra large pipeline flange fixed connection structure synoptic diagram;
Fig. 3 is extra large Guan Pingguan position and standpipe angular setting synoptic diagram;
Fig. 4 is the prefabricated and verification synoptic diagram that extra large pipe flange expands and bends;
Fig. 5 is the scheme of installation under water that extra large pipe flange expands and bends.
Among Fig. 1-Fig. 5: 1. vertical inclinometer, 2. level angle instrument, 3. spirit-leveling instrument, 4. tensiometer, 5. steel wire cucurbit, 6. range finding steel wire, 6-1. clip, 7. base, 8.A index dial, 9. sleeve, 10. vertical shaft, 11. vertical angle indicators, 12.A bolt, 13.A deep-slotted chip breaker, 14.A screw, 15.B index dial, 16. the level angle pointer, 17.B deep-slotted chip breaker, 18.B screw, 19. Current Collector Sleaves, 20. water wings, 21. standpipes, 22. flat pipes, 23. expand bends.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows, see also Fig. 1-Fig. 5.
As shown in Figure 1: measuring instrument comprises vertical inclinometer 1, level angle instrument 2, spirit-leveling instrument 3, tensiometer 4, steel wire cucurbit 5, range finding steel wire 6, vertical inclinometer 1 and level angle instrument 2 vertical fixing are integral, described vertical inclinometer 1 includes A index dial 8, sleeve 9, vertical shaft 10, vertical angle indicator 11 and A bolt 12, A index dial 8 is fixed together with sleeve 9 and sky is enclosed within on the vertical shaft 10, can rotate around vertical shaft, have A deep-slotted chip breaker 13 on the A index dial 8, one end of vertical angle indicator 11 is fixed on the A index dial 8 with A bolt 12, vertical angle indicator 11 can rotate around A bolt 12, the A screw 14 of vertical angle indicator 11 center fixed is stuck in the A deep-slotted chip breaker 13, vertical angle indicator 11 rotates along A deep-slotted chip breaker 13 by A screw 14, the A index dial 8 of described vertical inclinometer 1 is used to measure the curved vertical inclination angle of expanding, its meter full scale is-90 ° to 0 ° to+90 °, precision 30 ', the curved vertical inclination angle of expanding shows by vertical angle indicator 11.Described range finding steel wire 6 is wrapped on the steel wire cucurbit 5, and steel wire cucurbit 5 is used to tighten up (or loosening) range finding steel wire 6, and range finding steel wire 6 is used to measure two distances between the flange.The diameter of range finding steel wire 6 is
Length is 100m, and scalable, and range finding has steel wire clip 6-1 on the steel wire 6, after range finding steel wire 6 keeps constant-tensions, steel wire clip 6-1 is stuck in the fixed length place of range finding steel wire 6, as between the aquatic measurement flange apart from the time mark on the range finding steel wire 6.One end of described tensiometer 4 is connected with steel wire cucurbit 5, the other end of tensiometer 4 is connected with an end of vertical angle indicator 11, when tensiometer 4 is tightened to certain tension force when range finding steel wire 6, plug the register pin on the tensiometer 4, make range finding steel wire 6 remain this constant-tension.
Described level angle instrument 2 comprises level angle pointer 16, B index dial 15, B deep-slotted chip breaker 17 and B screw 18, one end of level angle pointer 16 is fixed on sleeve 9, level angle pointer 16 can be swung on B index dial 15, the B screw 18 of level angle instrument 2 center fixed is stuck in the B deep-slotted chip breaker 17, B index dial 15 on the described level angle instrument 2 is used to measure the curved horizontal azimuth that expands, its meter full scale is-90 ° to 0 ° to+90 °, precision 30 ', the horizontal azimuth of expansion curved 23 shows by level angle pointer 14.Spirit-leveling instrument 3 is fixed on the level angle instrument 2, in order to show and to be adjusted in levelness when installing and measuring instrument that measuring instrument is fixedlyed connected with base 7 by level angle instrument 2.Level angle instrument 2 is in the same place by vertical shaft 10 and vertical inclinometer 1 vertical fixing, described base 7 by the long screw on the base 7 be bolted on the flange of tested pipeline.
Adopt following method when using the utility model:
One. concrete measuring process, as shown in Figure 2:
1. install and measure instrument under water, at first, the flange face of vertical shaft 10 center lines and the standpipe 21 of measuring instrument (or flat pipe 22) align, then, adjust the measuring instrument base and be level, at last, the fixation measuring instrument;
2. the frogman pulls out range finding steel wire 6 and exceptionally straight from the steel wire cucurbit 5 that 22 two measuring instruments of standpipe 21 and flat pipe are connected;
3. it is exceptionally straight to tighten up steel wire cucurbit 5 steel wire 6 of will finding range, arrive certain tension value after, plug the register pin on the tensiometer 4, steel wire clip 6-1 on the card;
4. read the horizontal angle and the vertical angle of measuring instrument respectively;
5. unload steel wire cucurbit 5 and range finding steel wire 6, measure steel wire length, add tensiometer 4, vertical angle indicator 11 equal lengths, just equal the distance between standpipe 21 and flat pipe 22 flanges according to steel wire clip 6-1 position;
Two. the set-up procedure of flat pipe 22 positions and standpipe 21 angles, as shown in Figure 3:
1. according to standpipe 21 peace pipes 22 flange angles, the distance parameter measured, position and the angle geometric graph of standpipe 21 peace pipe 22 flanges before adjustment draws;
∠ 1 is flat pipe end flange face horizontal angle before adjusting;
∠ 2 is standpipe end flanges face horizontal angle before adjusting;
∠ 3 and ∠ 4 are angle of bend before adjusting;
∠ θ standpipe 21 anglecs of rotation;
L: flat pipe 22 displacements.
2. according to existing bend pipe parameter, position and angle geometric graph after the standpipe 21 peace pipes 22 flange adjustment of drawing;
∠ 1 ' is for adjusting back flat pipe 22 end flanges face horizontal angles;
∠ 2 ' is for adjusting rear profile tube 21 end flanges face horizontal angles;
∠ 3 ' and ∠ 4 ' are for adjusting back angle of bend (design angle of bend);
3. by top graphing method, can calculate the angle of flat pipe 22 displacements and standpipe 21 rotations;
4. rotation standpipe 21 makes flange reach designing requirement with the mobile pipe 22 of putting down, and precasting exactly expands bends 23, makes it smooth connection, the qualification rate of raising expansion curved 23.
Three. flange expands and bends prefabricated and check: as shown in Figure 4:
1. prefabricated: after confirming that flat pipe 22 positions and standpipe 21 angles are suitable, according to standpipe 21 peace pipes 22 flange angles, the distance parameter of final measurement, prefabricated expansion curved 23 on the workboat deck.Sometimes, in order to race against time, to measure under water usually and carry out preceding or carry out, just prefabricated curved 23 two ends of expanding, a road junction or the spot welding of two road junctions are stayed in the centre, in order to adjusting.
2. check: when the curved 23 prefabricated backs (road junction or the spot welding of two road junctions are stayed in the centre) of expanding, two flange measuring instruments are installed in respectively on the flange at curved 23 two ends of expanding, measuring expands bends angle, the spacing of 23 liang of end flanges.Compare with angle, the spacing of standpipe 21 peace pipes 22 flanges.After all suitable, carry out the welding of weld bond at last, in case improper also will prescinding or spreading expansion curved 23.
Experience shows: if differential seat angle at ± 1 °, pitch difference is+0, during-20cm (in the curved short 20cm that promptly expands) scope, can connect smoothly and expand curvedly 23, flange pressure testing qualification rate is very high.
Four. the installation under water of extra large pipe flange expansion curved 23: as shown in Figure 5:
When extra large pipe flange expands curved 23 prefabricated intactly and after checking no problem, just can install under water, its step is as follows:
1. lift by crane extra large pipe flange expansion and bend 23, be divided into two kinds of situations usually:
1.. when the sea is calm, can expands to bend on 23 at extra large pipe flange and fasten crane barge 19.With crane barge 19 water is directly hung down in extra large pipe flange expansion curved 23 then.Putting it under frogman's guiding between the standpipe 21 peace pipes 22.
2.. when the sea is surged greatly, fastened the crane barge 19, also will fasten inflation water wings 20 except expanding to bend on 23 at extra large pipe flange.With crane barge with extra large pipe flange expand curved 23 hang the seabed after, the frogman has taken off crane barge 19, and with water wings 20 inflations, extra large pipe flange is expanded bend 23 to float.By the frogman it is pushed between the standpipe 21 peace pipes 22.The purpose of using inflation water wings 20 is when surging greatly because of the sea, crane barge 19 pitches bigger, at this moment use the extra large pipe flange of crane barge 19 butt joints to expand and bend 23 quite danger, inflate water wings 20 and use, because of pitching, crane barge 19 causes that extra large pipe flange expansion curved 23 moves up and down together with regard to having avoided, reduced frogman's danger, and made the flange butt joint more smooth.
2. butt joint standpipe 21 peace are managed 22 liang of end flanges: behind standpipe 21 peace pipes 22 two ends flange face position suitables, in the middle of two flanges, put into packing washer, wear bolt then, to avoid standpipe 21 or 22 displacements of flat pipe, after putting on, bolts at two ends tightens with the even reinforcing of hydraulic spanner successively again, afterburning always to design load, so far, extra large pipe flange expansion curved 23 has installed at this point.
Its advantage is: accurately can guarantee the flange pressure testing qualification rate height installed because measure, to have shortened the duration, to have reduced the offshore construction cost.As in the gas transmission line laying project of recent JZ9-3W seabed, used the curved measuring instrument of flange join type sea tube swelling, prefabricated effective with installation, the measurement of two places expansion curved 23 is accurate, connects smoothly under water, and the duration has shortened 8 days, the flange pressure testing is once qualified, saves 1,600,000 yuan of costs.
Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.
Claims (4)
1. a flange join type sea tube swelling is bent measuring instrument, it is characterized in that: measuring instrument comprises vertical inclinometer (1), level angle instrument (2), spirit-leveling instrument (3), tensiometer (4), steel wire cucurbit (5), range finding steel wire (6), vertical inclinometer (1) and level angle instrument (2) vertical fixing are integral, spirit-leveling instrument (3) is fixed on the level angle instrument (2), range finding steel wire (6) is wrapped in the steel wire cucurbit (5), have clip (6-1) on the range finding steel wire (6), one end of tensiometer (4) is connected with steel wire cucurbit (5), and level angle instrument (2) is fixedlyed connected with base (7).
2. the curved measuring instrument of flange join type according to claim 1 sea tube swelling, it is characterized in that: described vertical inclinometer (1) includes A index dial (8), sleeve (9), vertical shaft (10), vertical angle indicator (11) and A bolt (12), A index dial (8) is fixed together with sleeve (9) and sky is enclosed within on the vertical shaft (10), have A deep-slotted chip breaker (13) on the A index dial (8), one end of vertical angle indicator (11) is fixed on the A index dial (8) with A bolt (12) is rotatable, the A screw (14) of vertical angle indicator (11) center fixed is stuck in the A deep-slotted chip breaker (13), and the other end of vertical angle indicator (11) is connected with the other end of tensiometer (4).
3. the curved measuring instrument of flange join type according to claim 1 sea tube swelling, it is characterized in that: described level angle instrument (2) comprises level angle pointer (16), B index dial (15), B deep-slotted chip breaker (17) and B screw (18), one end of level angle pointer (16) is fixed on the sleeve (9), level angle pointer (16) can be gone up swing at B index dial (15), the B screw (18) of level angle instrument (2) center fixed is stuck in the B deep-slotted chip breaker (17), and level angle instrument (2) by vertical inclinometer (1) vertical fixing of vertical shaft (10) together.
4. the curved measuring instrument of flange join type according to claim 1 sea tube swelling, it is characterized in that: described base (7) is fixed on level angle instrument (2) and the tested flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205410669U CN201803687U (en) | 2010-09-26 | 2010-09-26 | Flange connection type expansion bend measuring instrument for submarine pipes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205410669U CN201803687U (en) | 2010-09-26 | 2010-09-26 | Flange connection type expansion bend measuring instrument for submarine pipes |
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| CN201803687U true CN201803687U (en) | 2011-04-20 |
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| CN2010205410669U Expired - Fee Related CN201803687U (en) | 2010-09-26 | 2010-09-26 | Flange connection type expansion bend measuring instrument for submarine pipes |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435117A (en) * | 2011-12-28 | 2012-05-02 | 中国海洋石油总公司 | Method and device for measuring spatial position between submarine pipeline flanges |
| CN102853801A (en) * | 2012-09-13 | 2013-01-02 | 东华大学 | Angle measuring device |
| CN103196352A (en) * | 2013-04-16 | 2013-07-10 | 山东科技大学 | Plane angle measuring instrument |
| CN103307996A (en) * | 2013-07-04 | 2013-09-18 | 合肥工业大学 | Simple laser scanning device |
| CN106568369A (en) * | 2016-10-21 | 2017-04-19 | 大连橡胶塑料机械有限公司 | Novel screw element height and phase angle synchronization measurement device |
| CN106813105A (en) * | 2015-12-02 | 2017-06-09 | 中国石油天然气股份有限公司 | Pipeline indicating device and pipeline assembly |
| CN107726963A (en) * | 2017-11-03 | 2018-02-23 | 中船黄埔文冲船舶有限公司 | A kind of existing school instrument of flange |
| CN108562438A (en) * | 2017-12-28 | 2018-09-21 | 洛阳轴承研究所有限公司 | Pairing bearing frictional torque measuring device and measuring method face-to-face |
| CN109682278A (en) * | 2017-10-19 | 2019-04-26 | 交通运输部上海打捞局 | A kind of seabed flange position indicator |
| CN110332878A (en) * | 2019-07-12 | 2019-10-15 | 天津海外海科技有限公司 | A kind of undersea sea pipe flange angel measuring instrument and application method |
| CN113587776A (en) * | 2021-09-17 | 2021-11-02 | 上海外高桥造船有限公司 | Folding pipe length measuring device and using method thereof |
| CN113666241A (en) * | 2021-07-15 | 2021-11-19 | 中国海洋石油集团有限公司 | In-place method for mounting after expansion bending |
| CN113932677A (en) * | 2021-09-01 | 2022-01-14 | 海洋石油工程股份有限公司 | Upright column type mechanical flange measuring instrument |
| CN114234774A (en) * | 2021-11-03 | 2022-03-25 | 海洋石油工程股份有限公司 | Mechanical measuring instrument with ratchet |
| CN114812350A (en) * | 2022-01-27 | 2022-07-29 | 海洋石油工程股份有限公司 | Flat mechanical flange measuring instrument with bearing |
-
2010
- 2010-09-26 CN CN2010205410669U patent/CN201803687U/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435117A (en) * | 2011-12-28 | 2012-05-02 | 中国海洋石油总公司 | Method and device for measuring spatial position between submarine pipeline flanges |
| CN102853801A (en) * | 2012-09-13 | 2013-01-02 | 东华大学 | Angle measuring device |
| CN103196352A (en) * | 2013-04-16 | 2013-07-10 | 山东科技大学 | Plane angle measuring instrument |
| CN103196352B (en) * | 2013-04-16 | 2015-07-08 | 山东科技大学 | Plane angle measuring instrument |
| CN103307996A (en) * | 2013-07-04 | 2013-09-18 | 合肥工业大学 | Simple laser scanning device |
| CN103307996B (en) * | 2013-07-04 | 2016-03-02 | 合肥工业大学 | A kind of laser scanning easy device |
| CN106813105B (en) * | 2015-12-02 | 2019-04-05 | 中国石油天然气股份有限公司 | Pipeline indicating device and pipeline assembly |
| CN106813105A (en) * | 2015-12-02 | 2017-06-09 | 中国石油天然气股份有限公司 | Pipeline indicating device and pipeline assembly |
| CN106568369A (en) * | 2016-10-21 | 2017-04-19 | 大连橡胶塑料机械有限公司 | Novel screw element height and phase angle synchronization measurement device |
| CN106568369B (en) * | 2016-10-21 | 2019-05-14 | 大连橡胶塑料机械有限公司 | Novel spiral element heights and phase angle synchronous measuring apparatus |
| CN109682278B (en) * | 2017-10-19 | 2022-11-22 | 交通运输部上海打捞局 | Submarine flange locater |
| CN109682278A (en) * | 2017-10-19 | 2019-04-26 | 交通运输部上海打捞局 | A kind of seabed flange position indicator |
| CN107726963A (en) * | 2017-11-03 | 2018-02-23 | 中船黄埔文冲船舶有限公司 | A kind of existing school instrument of flange |
| CN107726963B (en) * | 2017-11-03 | 2024-03-26 | 中船黄埔文冲船舶有限公司 | Flange calibration instrument |
| CN108562438A (en) * | 2017-12-28 | 2018-09-21 | 洛阳轴承研究所有限公司 | Pairing bearing frictional torque measuring device and measuring method face-to-face |
| CN110332878A (en) * | 2019-07-12 | 2019-10-15 | 天津海外海科技有限公司 | A kind of undersea sea pipe flange angel measuring instrument and application method |
| CN113666241A (en) * | 2021-07-15 | 2021-11-19 | 中国海洋石油集团有限公司 | In-place method for mounting after expansion bending |
| CN113666241B (en) * | 2021-07-15 | 2023-08-22 | 中国海洋石油集团有限公司 | Positioning method for mounting after expansion bending |
| CN113932677A (en) * | 2021-09-01 | 2022-01-14 | 海洋石油工程股份有限公司 | Upright column type mechanical flange measuring instrument |
| CN113587776A (en) * | 2021-09-17 | 2021-11-02 | 上海外高桥造船有限公司 | Folding pipe length measuring device and using method thereof |
| CN114234774A (en) * | 2021-11-03 | 2022-03-25 | 海洋石油工程股份有限公司 | Mechanical measuring instrument with ratchet |
| CN114812350A (en) * | 2022-01-27 | 2022-07-29 | 海洋石油工程股份有限公司 | Flat mechanical flange measuring instrument with bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20190926 |