CN204532141U - A kind of tubing and casing and box cupling twist the accurate control device connecing J value - Google Patents
A kind of tubing and casing and box cupling twist the accurate control device connecing J value Download PDFInfo
- Publication number
- CN204532141U CN204532141U CN201520086274.7U CN201520086274U CN204532141U CN 204532141 U CN204532141 U CN 204532141U CN 201520086274 U CN201520086274 U CN 201520086274U CN 204532141 U CN204532141 U CN 204532141U
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- China
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- travelling gear
- main pincers
- rotary encoder
- box cupling
- twist
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Abstract
A kind of tubing and casing and box cupling twist the accurate control device connecing J value, comprise pipe and twist machine enclosure, right bearing seat, bearing, main pincers travelling gear, left shaft holder, shaft joint and rotary encoder, the two ends of main pincers travelling gear are arranged on pipe respectively by bearing by right bearing seat and left shaft holder and twist on machine enclosure, are connected by shaft joint at arbitrary end face of main pincers travelling gear with rotary encoder.The rotational angle of main pincers travelling gear is obtained by rotary encoder, just accurately can control body threaded ends by the pitch of connecting thread again and be screwed in axial length in box cupling, thus Precise Control of Oil sleeve pipe is twisting with box cupling the control accuracy connecing the complete J value tolerance range formed later, in actual production, as long as just can accurately calculate according to the pitch of J value and tolerance thereof, connecting thread the precise turn that main pincers travelling gear should rotate, the rotation number of turns of main pincers travelling gear is supplied to by rotary encoder the control circuit that machine twisted by pipe.
Description
Technical field:
The utility model relates to a kind of tubing and casing and box cupling twists the accurate control device connecing J value.
Background technology:
In recent years along with the raising that oil field requires tubing and casing quality of connection, require that the connection of sleeve pipe and box cupling should meet bonding strength requirement, meet sealing requirements again.Existing tubing and casing is all twist in advance in one end of tubing and casing to connect box cupling before dispatching from the factory, and spin the end of thread of another root tubing and casing and box cupling to requiring behind oil field, the extension realizing tubing and casing is tightly connected again, and meets oil field operation requirement.
The existing tubing and casing technological process of production is: the cutted thread of path tube two ends, and---coupling pre-screwing---twist and connect that---hydraulic pressure test---oiling is antirust---enters stock by box cupling.Wherein, box cupling twists that to connect operation be a very important Quality Control Links, and it is directly connected to and follow-uply extends the sealing performance that connects and whether up to standard bonding strength requires.
At present, box cupling twists the API5C1 standard that the quality control requirement connecing operation performs American Petroleum Institute usually, this standard whether reaches requirement moment of torsion as criterion to twist the moment of torsion connect, in actual mechanical process, tubing and casing manufacturing enterprise is when prewhirling box cupling, except apply specific rotation torque value between box cupling and tubing and casing except, also to measure coupling face and the stubborn of tubing and casing body external screw thread outer face connects degree of depth J value, as shown in Figure 1, this J value tolerance range scope is larger, tolerance range is 12.7mm, requires lower.In the manufacturing process of reality, because the dimensional fits of internal and external threads is different, and use and different stubbornly connect thread compound, thus box cupling to twist the J value excursion after connecing also comparatively large, error is between 10mm.
In actual mechanical process, it is found that and perform this standard, certain defect is deposited between connection sealing between tubing and casing and box cupling and bonding strength, apply to require rotation torque under specific service condition after, still packing less phenomenon is there is between tubing and casing and box cupling, and by after the improvement of double thread type of attachment, current box cupling is twisted the mode that connects and can not be met again to twist and connect quality control requirement.
In recent years, applicant endeavours the research of tubing and casing link technique always, improve screw thread button-type and the machining accuracy of existing tubing and casing, propose with control J value (Lcpm) be control criterion tubing and casing and box cupling connection standard, the connection sealing energy of further both raisings and bonding strength, meet the extension connection request of oil field to tubing and casing better.The core of this standard is: control coupling inner thread and the externally threaded machining accuracy in tubing and casing two ends, to spin depth dimensions at spin time control liquefaction sleeve pipe and box cupling, namely control J value (Lcpm) is controlled, guarantee that two tubing and casing are when extending connection, the connecting end surface energy closed butt joint of two tubing and casing, thus ensure the sealing performance after two tubing and casing docking and bonding strength.
Twist connection technology requirement according to this box cupling, tubing and casing with box cupling twist connect complete after J value (Lcpm) tolerance range that formed should control within 0.5mm.
To take moment of torsion as control mode twist connect operation to carry out box cupling according to existing, tubing and casing and box cupling cannot meet the above-mentioned tolerance range requirement of J value after twisting and connecing, manual hand manipulation's adjustment must be carried out, operative employee also cannot ensure that once-through operation puts in place, need constantly to measure the change of J value to revise, labour intensity is large, twists operate miss once cross, and can connect quality and causes extreme influence twisting.
Utility model content:
Precisely be connected in order to ensure between tubing and casing with box cupling, ensure tubing and casing with box cupling twist connect complete after J value (Lcpm) tolerance range that formed should control within 0.5mm, applicant provide a kind of tubing and casing and box cupling twists the accurate control device connecing J value.
The technical scheme that the utility model is taked is as follows:
A kind of tubing and casing and box cupling twist the accurate control device connecing J value, comprise pipe and twist machine enclosure, right bearing seat, bearing, main pincers travelling gear, left shaft holder, shaft joint and rotary encoder, the two ends of main pincers travelling gear are arranged on pipe respectively by bearing by right bearing seat and left shaft holder and twist on machine enclosure, it is characterized in that: be connected with rotary encoder by shaft joint at arbitrary end face of main pincers travelling gear.
Further, rotary encoder is arranged on left shaft holder, and rotary encoder is connected by the left end of shaft joint with main pincers travelling gear.
Further, the speed ratio of main pincers travelling gear and rotary encoder is 1 to 10, and namely main pincers travelling gear turns 1 circle, and rotary encoder turns 10 circles.
Owing to having installed rotary encoder on the end face of main pincers travelling gear, the rotational angle of main pincers travelling gear is obtained by rotary encoder, accurately can control body threaded ends by the pitch of connecting thread and be screwed in axial length in box cupling, thus can Precise Control of Oil sleeve pipe with box cupling twist connect complete after the control accuracy of J value (Lcpm) tolerance range that formed, ensure the control of J value (Lcpm) tolerance range within 0.5mm scope.In actual production, as long as just can accurately calculate according to the pitch of J value (Lcpm) and tolerance thereof, connecting thread the precise turn that main pincers travelling gear should rotate, the rotation number of turns of main pincers travelling gear is supplied to by rotary encoder the control circuit that machine twisted by pipe.By in theory, the tolerance grade of J value (Lcpm) can improve arbitrarily, as long as select corresponding rotary encoder just can realize, therefore guarantees that the tolerance grade of J value (Lcpm) does not exist any technical difficulty within 0.5mm scope.
Accompanying drawing illustrates:
Fig. 1 is the syndeton schematic diagram of tubing and casing and box cupling;
Fig. 2 is structural representation of the present utility model;
In figure: machine enclosure twisted by 1-pipe; 2-right bearing seat; 3-bearing; The main pincers travelling gear of 4-; 5-left shaft holder; 6-shaft joint; 7-rotary encoder.
Detailed description of the invention:
Below in conjunction with accompanying drawing, progressive explanation is done to embodiment of the present utility model:
A kind of tubing and casing and box cupling twist the accurate control device connecing J value, as shown in Figure 2, it comprises pipe and twists machine enclosure 1, right bearing seat 2, bearing 3, main pincers travelling gear 4, left shaft holder 5, shaft joint 6 and rotary encoder 7, the two ends of main pincers travelling gear 4 are arranged on pipe respectively by bearing 3 by right bearing seat 2 and left shaft holder 5 and twist on machine enclosure 1, be connected with rotary encoder 7 by shaft joint 6 at arbitrary end face of main pincers travelling gear 4, in this example, rotary encoder 7 is arranged on left shaft holder 5, rotary encoder 7 is connected with the left end of main pincers travelling gear 4 by shaft joint 6, the speed ratio of main pincers travelling gear 4 and rotary encoder 7 is 1 to 10, i.e. main pincers travelling gear 4 turn of 1 circle, rotary encoder 7 turn of 10 circle.
Claims (3)
1. a tubing and casing and box cupling twist the accurate control device connecing J value, comprise pipe and twist machine enclosure (1), right bearing seat (2), bearing (3), main pincers travelling gear (4), left shaft holder (5), shaft joint (6) and rotary encoder (7), the two ends of main pincers travelling gear (4) are arranged on pipe respectively by bearing (3) by right bearing seat (2) and left shaft holder (5) and twist on machine enclosure (1), it is characterized in that: be connected with rotary encoder (7) by shaft joint (6) at arbitrary end face of main pincers travelling gear (4).
2. tubing and casing and box cupling twist the accurate control device connecing J value according to claim 1, it is characterized in that: rotary encoder (7) is arranged on left shaft holder (5), rotary encoder (7) is connected by the left end of shaft joint (6) with main pincers travelling gear (4).
3. tubing and casing and box cupling twist the accurate control device connecing J value according to claim 1, it is characterized in that: the speed ratio of main pincers travelling gear (4) and rotary encoder (7) is 1 to 10, namely main pincers travelling gear (4) turns 1 circle, and rotary encoder (7) turns 10 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520086274.7U CN204532141U (en) | 2015-02-06 | 2015-02-06 | A kind of tubing and casing and box cupling twist the accurate control device connecing J value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520086274.7U CN204532141U (en) | 2015-02-06 | 2015-02-06 | A kind of tubing and casing and box cupling twist the accurate control device connecing J value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532141U true CN204532141U (en) | 2015-08-05 |
Family
ID=53746164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520086274.7U Expired - Fee Related CN204532141U (en) | 2015-02-06 | 2015-02-06 | A kind of tubing and casing and box cupling twist the accurate control device connecing J value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204532141U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500903A (en) * | 2016-09-19 | 2017-03-15 | 北京大学 | A kind of monitoring method of the special buckle twist-on quality based on torque signal |
| CN112525415A (en) * | 2020-11-02 | 2021-03-19 | 天津钢管制造有限公司 | Pressure detection method for oil tapping pressure in oil casing coupling |
-
2015
- 2015-02-06 CN CN201520086274.7U patent/CN204532141U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500903A (en) * | 2016-09-19 | 2017-03-15 | 北京大学 | A kind of monitoring method of the special buckle twist-on quality based on torque signal |
| CN106500903B (en) * | 2016-09-19 | 2019-01-15 | 北京大学 | A kind of monitoring method of the special buckle twist-on quality based on torque signal |
| CN112525415A (en) * | 2020-11-02 | 2021-03-19 | 天津钢管制造有限公司 | Pressure detection method for oil tapping pressure in oil casing coupling |
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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: 20150805 Termination date: 20200206 |