CN203928991U - For measuring the ruler of tube end linearity - Google Patents
For measuring the ruler of tube end linearity Download PDFInfo
- Publication number
- CN203928991U CN203928991U CN201420204090.1U CN201420204090U CN203928991U CN 203928991 U CN203928991 U CN 203928991U CN 201420204090 U CN201420204090 U CN 201420204090U CN 203928991 U CN203928991 U CN 203928991U
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- ruler
- measuring
- permanent
- linearity
- pipe
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Abstract
A kind of for measuring the ruler of tube end linearity, it comprises blade, and two permanent-magnet blocks that are arranged side by side at blade right-hand member, the permanent-magnet block in left side and the distance of blade left end are 1500mm～1800mm, distance between two permanent-magnet blocks is at least 300mm, and it also comprises the bending action dip stick that is arranged on blade left end.The utility model adopts the permanent-magnet block that is equipped with parallel arranged in common ruler one end, make one end of pipe to be measured adsorb closely and be fitted on ruler in the time measuring, ensure the measuring accuracy of tube end linearity to be measured, be arranged on the bending action dip stick of the ruler other end, make of the present utility modelly can measure tube end linearity to be measured and bending action for the ruler of measuring tube end linearity simultaneously.The utility model is reasonable in design, simple in structure, intention is unique, measurement accuracy is high, in ensureing measuring accuracy, has saved labour and Measuring Time, has improved work efficiency.
Description
Technical field
The utility model belongs to survey instrument and equipment technical field, is specifically related to a kind of instrument of measuring tube end linearity.
Background technology
Linearity is most basic part in geometric tolerances.Linearity is a kind of form tolerance of the actual straight line of restriction to ideal line variation.Linearity is made up of shape (desirable contained shape), size (tolerance value), direction, position four elements.For limiting a rectilinear form deviation in plane, restricted quarter straight line form variations in one direction, the form variations of restricted quarter straight line in either direction.
The tube end straight line degree measurement that American Petroleum Institute's sleeve pipe and oil pipe specification are more than or equal to 114.3mm to specification requires as follows:
Use at least long ruler of 1.80m to measure tube end linearity, ruler at least should have 0.30m to contact with the tube surface beyond curved end scope, only guaranteed ruler has at least 0.30m to contact with the tube surface beyond pipe end bending range, guarantee pipe end straightness measuring accuracy.
American Petroleum Institute's drilling rod specification requires as follows to drill pipe body end straight line degree measurement:
Use at least long ruler of 1.80m to measure drill pipe body end (not comprising end upsetting part) linearity, ruler at least should have 0.30m to contact with the tube surface beyond curved end scope, only guaranteed ruler has at least 0.30m to contact with the tube surface beyond pipe end bending range, the precision that guarantee pipe end straightness is measured.
In order to ensure tube end linearity, factory all measures tube end linearity.But because existing survey instrument cannot ensure the precision of tube end straight line degree measurement to cause factory cannot find out in time the underproof pipe of end linearity, cause the underproof pipe of these pipe end straightness to forward lower operation to, or dispatch from the factory as specification product.
Oil pipe, casing thread connection and the body bias of the underproof pipe processing of pipe end straightness, can reduce oil pipe, casing joint strength of joint and sealing property.If factory finds that oil pipe, the casing thread connection of the underproof pipe processing of pipe end straightness are defective, should after crop, again process.If oil pipe, casing length meet standard-required after crop, manufacturer can lose pipeline section and the crop expense of crop part in vain; If oil pipe, casing length do not meet standard-required after crop, whole oil pipe, sleeve pipe are scrapped, and manufacturer's loss is larger.In addition, when in machining screw joint process, the underproof pipe of pipe end straightness rotates, vibrations are very serious, this can cause threading machine bearing life and other part earlier period damage, shortens the thread processing machine tool life-span, finally makes manufacturer's production cost increase considerably.
After the underproof pipe of use tube end linearity is processed into line pipe, in the time of the seam of pipeline field joint, easily produces misalignment, and increase welding vestige stress, finally reduce joint welding quality.
Drill rod threaded nipple and the body bias of the underproof pipe processing of pipe end straightness, can reduce drilling life of drill pipe.
Ensure oil pipe, sleeve pipe, line pipe and drill pipe body end straight line degree measurement precision, key is the design of tube end straight line degree measuring tool.Current, design can ensure that the tube end straight line degree measuring tool of degree of accuracy is still the large technical barrier that survey instrument designing unit and processing enterprise face.
Summary of the invention
Technical problem to be solved in the utility model be to provide a kind of reasonable in design, simple in structure, measuring accuracy is high, easy to use for measuring the ruler of tube end linearity.
Solving the problems of the technologies described above adopted technical scheme is:
It comprises blade, and two permanent-magnet blocks that are arranged side by side at blade right-hand member, the permanent-magnet block in left side and the distance of blade left end are 1500mm～1800mm, and the distance between two permanent-magnet blocks is at least 300mm, and it also comprises the bending action dip stick that is arranged on blade left end.
The utility model adopts the permanent-magnet block that is equipped with parallel arranged in common ruler one end, make one end of pipe to be measured closely adsorb and be fitted on ruler in the time measuring, ensure the measuring accuracy of tube end linearity to be measured, be arranged on the bending action dip stick of the ruler other end, make of the present utility modelly can directly read bending action for the ruler of measuring tube end linearity.The utility model is reasonable in design, simple in structure, intention is unique, measurement accuracy is high, in ensureing measuring accuracy, has saved labour and Measuring Time, has improved work efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 4.
Embodiment
Now in conjunction with the accompanying drawings and embodiments the utility model is further described, but the utility model is not limited to following embodiment.
Embodiment 1
In Fig. 1, the ruler for measuring tube end linearity of the present embodiment is connected and is formed by blade 1, permanent-magnet block 2.
Be equipped with two permanent-magnet blocks 2 arranged side by side at blade 1 right-hand member, the permanent-magnet block 2 that is arranged on left side is 1500mm apart from the length of blade left end, between two permanent-magnet blocks 2 at a distance of 300mm.
Use the present embodiment when measuring the ruler of tube end linearity and measure tube end linearity, first be placed on pipe to be measured parallel the one side that is equipped with permanent-magnet block 2 on ruler, two permanent-magnet blocks 2 are adsorbed on ruler on pipe to be measured, make the length between two permanent-magnet blocks 2 on ruler blade 1 contact laminating with the tube surface beyond pipe end bending range.According to the requirement of American Petroleum Institute's sleeve pipe and oil pipe specification and drilling rod specification, only the tube surface beyond the pipe end bending range of guaranteed ruler and pipe to be measured has at least 300mm to contact, guarantee pipe end straightness measuring accuracy.Be assemblied between two permanent-magnet blocks 2 of ruler right-hand member at a distance of 300mm, the suction-operated that two permanent-magnet blocks 2 are treated test tube has ensured the measuring accuracy of tube end linearity to be measured, measures the bending action of pipe end by routine measurement instruments such as clearance gauges simultaneously.
Embodiment 2
Be equipped with two permanent-magnet blocks 2 arranged side by side at blade 1 right-hand member, the permanent-magnet block 2 that is arranged on left side is 1600mm apart from the length of blade left end, between two permanent-magnet blocks 2 at a distance of 300mm.
Connecting relation between other parts and parts is identical with embodiment 1.Principle of work is identical with embodiment 1.
Embodiment 3
Be equipped with two permanent-magnet blocks 2 arranged side by side at blade 1 right-hand member, the permanent-magnet block 2 that is arranged on left side is 1800mm apart from the length of blade left end, between two permanent-magnet blocks 2 at a distance of 400mm.
Connecting relation between other parts and parts is identical with embodiment 1.Principle of work is identical with embodiment 1.
Embodiment 4
In Fig. 2, the ruler for measuring tube end linearity of the present embodiment is connected and is formed by blade 1, permanent-magnet block 2, bending action dip stick 3.
In above-described embodiment 1～3, be equipped with bending action dip stick 3 at blade 1 left end, the connecting relation between other parts and parts is identical with embodiment 1～3.
Use the present embodiment when measuring the ruler of tube end linearity and measure tube end linearity, first be placed on pipe to be measured parallel the one side that is equipped with permanent-magnet block 2 and bending action dip stick 3 on ruler, two permanent-magnet blocks 2 are adsorbed on ruler on pipe to be measured, make the length between two permanent-magnet blocks 2 on ruler blade 1 contact laminating with the tube surface beyond pipe end bending range.According to the requirement of American Petroleum Institute's sleeve pipe and oil pipe specification and drilling rod specification, only the tube surface beyond the pipe end bending range of guaranteed ruler and pipe to be measured has at least 300mm to contact, guarantee pipe end straightness measuring accuracy.Be assemblied between two permanent-magnet blocks 2 of ruler right-hand member at a distance of 300mm, the suction-operated that two permanent-magnet blocks 2 are treated test tube has ensured the measuring accuracy of tube end linearity to be measured, can directly read the bending action value of pipe to be measured by being arranged on the bending action dip stick 3 of blade 1 left end simultaneously.
Claims (2)
1. one kind for measuring the ruler of tube end linearity, it is characterized in that: it comprises blade (1), and two permanent-magnet blocks (2) that are arranged side by side at blade (1) right-hand member, the permanent-magnet block (2) in left side is 1500mm～1800mm with the distance of blade (1) left end, and the distance between two permanent-magnet blocks (2) is at least 300mm.
2. according to claim 1 for measuring the ruler of tube end linearity, it is characterized in that: it also comprises the bending action dip stick (3) that is arranged on blade (1) left end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204090.1U CN203928991U (en) | 2014-04-24 | 2014-04-24 | For measuring the ruler of tube end linearity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204090.1U CN203928991U (en) | 2014-04-24 | 2014-04-24 | For measuring the ruler of tube end linearity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203928991U true CN203928991U (en) | 2014-11-05 |
Family
ID=51824793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420204090.1U Expired - Fee Related CN203928991U (en) | 2014-04-24 | 2014-04-24 | For measuring the ruler of tube end linearity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203928991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278960A (en) * | 2018-03-23 | 2018-07-13 | 中国石油天然气集团公司管材研究所 | A kind of measurement method of steel tube end part straightness measuring instrument and the measuring instrument |
-
2014
- 2014-04-24 CN CN201420204090.1U patent/CN203928991U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278960A (en) * | 2018-03-23 | 2018-07-13 | 中国石油天然气集团公司管材研究所 | A kind of measurement method of steel tube end part straightness measuring instrument and the measuring instrument |
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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 |
Granted publication date: 20141105 Termination date: 20160424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |