CN202452912U - Measurement ring gauge for external thread standoff of hermetic-seal nipple used in low-pressure gas field - Google Patents
Measurement ring gauge for external thread standoff of hermetic-seal nipple used in low-pressure gas field Download PDFInfo
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- CN202452912U CN202452912U CN2011205619471U CN201120561947U CN202452912U CN 202452912 U CN202452912 U CN 202452912U CN 2011205619471 U CN2011205619471 U CN 2011205619471U CN 201120561947 U CN201120561947 U CN 201120561947U CN 202452912 U CN202452912 U CN 202452912U
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Abstract
The utility model relates to a measurement ring gauge for the external thread standoff of a hermetic-seal nipple used in a low-pressure gas field. The measurement ring gauge comprises a thread gauge, wherein the internal thread parameters of the thread gauge are matched with the design parameters of the external thread of the hermetic-seal nipple used in the low-pressure gas field, four oil-cutting grooves are uniformly arranged on the internal thread of the thread gauge, and one of the oil-cutting grooves is disposed at the start point of a complete thread at the end of the thread gauge. The measurement ring gauge solves the technical problem of the inability of conventional thread gauges to measure the external thread standoff of the hermetic-seal nipple used in the low-pressure gas field accurately and conveniently, and can measure the external thread standoff of the hermetic-seal nipple used in the low-pressure gas field accurately and conveniently, with the advantages of high use convenience, stable and reliable measuring results, and relatively good suitability for field detection.
Description
Technical field
The utility model belongs to oil, Gas Industry oil well pipe thread parameter measuring technical field, is specifically related to a kind of air-tight seal screw joint external thread standoff and measures ring gauge.
Background technology
In oil, the construction of natural gas fields, the sleeve pipe that is adopted is the string of casing that is connected to form by threaded connector, and threaded connector is the weakest link in the tubing string, and its structural intergrity, sealing integrity and reliability have a strong impact on the safety in production and the tubing string life-span in oil field.For the low pressure gas field, employed sleeve pipe must satisfy its switching performance, and lower production cost is arranged again.To the double requirements of Oilfield Company to sleeve pipe reliability and economy; CNPC Tubular Goods Research Institute develops the low pressure gas field of a kind of two-stage sealing and screw thread transition structure form and uses sealing adaptor; In strength of joint that has guaranteed tubing string and sealing property; Reduce the factory process difficulty again, practiced thrift production cost.This low pressure gas field is to guarantee the safe and reliable important step of string of casing with the parameter measurement of air-tight seal screw joint external thread.Because the singularity of this joint external thread parameter needs to measure the external thread standoff, still, existing thread profile gauge can not accurately be convenient for measuring this special joint external thread standoff.Therefore, need a kind of gauge that accurately is convenient for measuring this external thread standoff.
Summary of the invention
The utility model purpose provides a kind of measurement ring gauge that can measure the low pressure gas field with air-tight seal screw joint external thread standoff, and it has solved existing thread profile gauge can not accurately be convenient for measuring the technical matters of low pressure gas field with air-tight seal screw joint external thread standoff.
The technical solution of the utility model is:
1, a kind of low pressure gas field comprises thread profile gauge 1 with air-tight seal screw joint external thread parameter measurement ring gauge; It is characterized in that: the inner thread parameter of said thread profile gauge 1 and low pressure gas field are complementary with the external thread design parameter of air-tight seal screw joint; Be evenly equipped with four oil bits grooves 4 on the internal thread of said thread profile gauge 1, and one of them oil bits groove is positioned at the big end complete thread of thread profile gauge starting point; The opening angle a of said oil bits groove is 60 ± 3 °, and groove depth h is 3 ± 0.5mm.
2, low pressure according to claim 1 gas field is with air-tight seal screw joint external thread parameter measurement ring gauge; It is characterized in that: the inner thread parameter of said thread profile gauge 1 is: loading end angle [alpha]=3 °～30 °, spigot surface angle beta=30 °～45 °, tooth top circular arc radius R=0.38mm～0.42mm; Wide B1=1.3mm～the 1.5mm of alveolus; Wide B2=1.6mm～the 1.8mm of dental ridge, the high H=1.9mm～2.2mm of tooth, pitch N are per inch 6 teeth～8 teeth.
3, low pressure according to claim 1 and 2 gas field is characterized in that: comprise that also two are tightened handle 2 with air-tight seal screw joint external thread parameter measurement ring gauge; Tighten the excircle side that handle 2 symmetries are installed in thread profile gauge 1 for said two.
The technique effect that the utlity model has is:
1, the utility model adopts the thread profile gauge parameter that is complementary with air-tight seal screw joint external thread design parameter with the low pressure gas field, can measure the external thread standoff of low pressure gas field with air-tight seal screw joint accurately and conveniently.
2, the utility model is easy to use, and measurement result is reliable and stable, and can be applicable to on-the-spot the detection preferably.
Description of drawings
Fig. 1 is ring gauge is measured in the utility model low pressure gas field with air-tight seal screw joint external thread standoff a structural representation;
Fig. 2 is the C-C cut-open view of Fig. 1, i.e. the structural representation of oil bits groove;
Fig. 3 is the structural drawing of the measured low pressure gas field of the utility model ring gauge with the hermetic seal male connection;
Fig. 4 be with the low pressure gas field with the structural drawing of the corresponding low pressure of hermetic seal male connection gas field with the hermetic seal female adapter;
Wherein: the 1-thread profile gauge; 2-tightens handle; The 3-internal thread; 4-oil bits groove; A-oil bits channel opening angle; H-oil bits groove depth; α-loading end angle; β-spigot surface angle; R-tooth top (end) arc radius; The B1-alveolus is wide; The B2-dental ridge is wide; The H-tooth is high; The O-internal thread becomes awl.
Embodiment
As shown in Figure 1, the utility model comprises that a thread profile gauge 1, two tighten handle 2, and the inner thread parameter of thread profile gauge 1 and low pressure gas field are complementary with the external thread design parameter of air-tight seal screw joint; Be evenly equipped with four oil bits grooves 4 on the internal thread of thread profile gauge 1, one of them oil bits groove must be positioned at the big end complete thread of thread profile gauge starting point.The opening angle a of oil bits groove is 60 ± 3 °, and groove depth h is 3 ± 0.5mm.
There is the threaded hole of two symmetrical distributions thread profile gauge 1 excircle side, tightens in the threaded hole that handle 2 is installed in outside surface respectively for two.
Referring to Fig. 3, the hermetic seal male connection is used in a kind of low pressure gas field, and the resistance to tension behind the last button has been improved in loading end angle [alpha]=3 °～30 °; Spigot surface angle beta=30 °～45 °, the button guiding is stable in the assurance; Tooth top circular arc radius R=0.38mm～0.42mm has the auxiliary seal effect simultaneously at anti-stick button; Wide B1=1.3mm～the 1.5mm of alveolus is prone to make-up when detaining in the assurance thread alternating does not take place; Wide B2=1.6mm～the 1.8mm of dental ridge, button back loading end contacts with spigot surface in the assurance; High H=1.9mm～the 2.2mm of tooth has improved tensile strength; Pitch N is per inch 6 teeth～8 teeth, the intensity in the assurance under button and the tensile load.During practical implementation, can select this special thread sleeve pipe of different size for use according to the requirement of concrete operating mode.Adopt and the same processing technology of API screw thread during manufacturing.Wherein box cupling and body be with a grade of steel or a high grade of steel, on when detaining two ends evenly smear the API thread compound, clamping box cupling middle part, factory's end adopts on the peak torque to be detained, on-the-spot end adopts on the best torque to be detained.
Referring to Fig. 4, the hermetic seal female adapter is used in a kind of low pressure gas field, and the resistance to tension behind the last button has been improved in loading end angle [alpha]=3 °～30 °; Spigot surface angle beta=30 °～45 °, the button guiding is stable in the assurance; Arc radius R=0.38mm～0.42mm at the bottom of the tooth has the auxiliary seal effect simultaneously at anti-stick button; Wide B1=1.3mm～the 1.5mm of alveolus is prone to make-up when detaining in the assurance thread alternating does not take place; Wide B2=1.6mm～the 1.8mm of dental ridge, button back loading end contacts with spigot surface in the assurance; High H=1.9mm～the 2.2mm of tooth has improved tensile strength; Pitch N is per inch 6 teeth～per inch 8 teeth, the intensity in the assurance under button and the tensile load; Referring to Fig. 4, internal thread becomes awl O and is 67mm/m～73mm/m, forms effective sealed engagement.During practical implementation, can select this special thread sleeve pipe of different size for use according to the requirement of concrete operating mode.Adopt and the same processing technology of API screw thread during manufacturing.Wherein box cupling and body be with a grade of steel or a high grade of steel, internal thread phosphatization thickness >=20um, on when detaining two ends evenly smear the API thread compound, clamping box cupling middle part, factory's end adopts on the peak torque to be detained, on-the-spot end adopts on the best torque to be detained.
During measurement, with thread profile gauge 1 through spanner or tighten on the external thread that handle 2 tightens to the measured sleeve tubing string.After tightening, use pit gauge measurement thread profile gauge small end end face and box face apart from d.The design ideal value of d can be consulted the low pressure gas field with air-tight seal screw joint thread parameter standard, can confirm through the size of contrast d whether institute's survey sleeve pipe external thread standoff parameter is qualified.
Claims (3)
1. ring gauge is measured with air-tight seal screw joint external thread standoff in a low pressure gas field, comprises thread profile gauge (1); It is characterized in that: the inner thread parameter of said thread profile gauge (1) and low pressure gas field are complementary with the external thread design parameter of air-tight seal screw joint; Be evenly equipped with four oil bits grooves (4) on the internal thread of said thread profile gauge (1), and one of them oil bits groove is positioned at the big end complete thread of thread profile gauge starting point; The opening angle (a) of said oil bits groove is 60 ± 3 °, and groove depth (h) is 3 ± 0.5mm.
2. ring gauge is measured with air-tight seal screw joint external thread standoff in low pressure according to claim 1 gas field; It is characterized in that: the inner thread parameter of said thread profile gauge (1) is: loading end angle (α)=3 °～30 °, spigot surface angle (β)=30 °～45 °, tooth top arc radius (R)=0.38mm～0.42mm; Wide (B1)=1.3mm～1.5mm of alveolus; Wide (B2)=1.6mm～1.8mm of dental ridge, high (H)=1.9mm～2.2mm of tooth, pitch is per inch 6 teeth～8 teeth.
3. ring gauge is measured with air-tight seal screw joint external thread standoff in low pressure according to claim 1 and 2 gas field, it is characterized in that: comprise that also two are tightened handle (2); Tighten the excircle side that handle (2) symmetry is installed in thread profile gauge (1) for said two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205619471U CN202452912U (en) | 2011-12-19 | 2011-12-19 | Measurement ring gauge for external thread standoff of hermetic-seal nipple used in low-pressure gas field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205619471U CN202452912U (en) | 2011-12-19 | 2011-12-19 | Measurement ring gauge for external thread standoff of hermetic-seal nipple used in low-pressure gas field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202452912U true CN202452912U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205619471U Expired - Fee Related CN202452912U (en) | 2011-12-19 | 2011-12-19 | Measurement ring gauge for external thread standoff of hermetic-seal nipple used in low-pressure gas field |
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| Country | Link |
|---|---|
| CN (1) | CN202452912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111754651A (en) * | 2020-06-01 | 2020-10-09 | 中国石油天然气集团有限公司 | Virtual tight distance measuring method |
-
2011
- 2011-12-19 CN CN2011205619471U patent/CN202452912U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111754651A (en) * | 2020-06-01 | 2020-10-09 | 中国石油天然气集团有限公司 | Virtual tight distance measuring method |
| CN111754651B (en) * | 2020-06-01 | 2022-07-05 | 中国石油天然气集团有限公司 | Virtual tight distance measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20131219 |