CN2177794Y - Hollow sucker rod - Google Patents
Hollow sucker rod Download PDFInfo
- Publication number
- CN2177794Y CN2177794Y CN 93219666 CN93219666U CN2177794Y CN 2177794 Y CN2177794 Y CN 2177794Y CN 93219666 CN93219666 CN 93219666 CN 93219666 U CN93219666 U CN 93219666U CN 2177794 Y CN2177794 Y CN 2177794Y
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- CN
- China
- Prior art keywords
- hollow section
- box cupling
- seamless hollow
- joint
- seamless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a hollow sucker rod. The utility model is formed by the progress that a seal ring or a metal pipe joint under the thermal condition, which is clamped with a jointless hollow pipe with uniform wall thickness, is fixed tightly with a jointing hoop or another metal pipe joint. An oil resistant seal ring can be added in certain cases. The utility model has the advantages of simple manufacturing process, and good tightness. The stress concentration generated by the situation that the ending position of threads of a hollow pipe is stressed and locked tightly can be avoided, and thus, the utility model is not easy to break.
Description
The utility model relates to the latus rectum hollow rod.
The effect of latus rectum hollow rod in the oil production technology device is by cable under hollow rod is in oil pipe or injects heat transfer medium (hot water, deep fat), in oil pipe, form a direct circulation system, reach viscosity reduction, wax removal, sand washing, separate purposes such as salt, simultaneously can increase the oil pump plunger piston effective travel, improve pump efficiency, also can be in order to oil production by layer, slim-hole is recovered the oil and is driven subsurface progressive cavity etc.Chinese patent " latus rectum hollow rod " (patent No. 90225278.X) has been introduced a kind of latus rectum hollow rod, the body wall thickness is even, end outer surface adopts rolled thread, the box cupling inner surface adopts thread-rolling screw, after being screwed into box cupling, two pipes connect, though this technology has been taked several encapsulating methods, still has leakage phenomenon.In addition, box cupling is in the stressed locking in gas pipe thread ending place, and produce stress and concentrate, so the pipe screw-thread ending place fracture of being everlasting.
The purpose of this utility model is to improve the shortcoming of prior art and a kind of good airproof performance is provided, and the intensity height, can not produce that stress is concentrated at gas pipe thread ending place and the hollow rod that causes the beam hanger rupture failure.
The utility model is design like this, selects the uniform seamless hollow section of wall thickness for use, and the outer round surface at its two ends is processed into light beam, and fineness exists
More than 6; Alternative is processed into the tubular configured joint seal with metal or nylon material, and the seal endoporus adopts fraising to be processed into optical surface, and its fineness exists
More than 6, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but is the interference size; Its external surface is processed into finish and exists
More than 6, and tapering is arranged.Seal is heated, make the end of its seamless hollow section under the normal temperature of packing into after the expansion, just tightly clip is on seamless hollow section after its cooling, and the end portion on the seamless hollow section beyond the seal adopts rolled thread, is screwed onto with the box cupling with extruding internal thread with the metal manufacturing.The sealing of box cupling two ends and tubular configured joint, box cupling two ends are processed with the tapering that is complementary with seal outer surface and the fineness of poppet surface exists
More than 6, two seamless hollow sections are screwed into the box cupling from the box cupling two ends, tightly clip is together because of seal adopts interference size and seamless hollow section, seal outer surface adopts the conical surface and box cupling to fit tightly again, connect good airproof performance so plant hollow rod, avoided the stressed locking in screw-thread ending place and produce stress and concentrate, thereby be difficult for rupturing at the screw-thread ending place.
The utility model can also be realized like this, selects the uniform seamless hollow section of wall thickness for use, and the outer round surface at its two ends is processed into light beam, and fineness exists
More than 6; Alternative tubular metal joint, endoporus adopts fraising, is processed into finish and exists
More than 6, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but is the interference size, and one end has cannelure, joint is heated, makes the end of its seamless hollow section under the normal temperature of packing into after the expansion, after the joint cooling just tightly clip on seamless hollow section.End portion beyond the joint of seamless hollow section adopts rolled thread, be screwed onto with box cupling with extruding internal thread, box cupling both ends of the surface and tubular configured joint corresponding surface have cannelure, the mid-oil-resistant seal ring that is placed with of cannelure that the end that joint and box cupling fit forms.Tightly clip is together because of joint adopts interference size and seamless hollow section for this kind of design, adopt the oil-resistant seal ring extruding tight at joint and box cupling place again, connect good airproof performance so plant hollow rod, avoided the stressed locking in screw-thread ending place to produce stress and concentrated, thereby be difficult for rupturing at the screw-thread ending place.Above-mentioned oil-resistant seal ring also can be placed in the box cupling fully, does not promptly drive cannelure on the metal joint, and is processed with the cannelure of placing sealing ring in the both ends of the surface of box cupling.
The third technical scheme of the present utility model is, selects the uniform seamless hollow section of wall thickness for use, and its two ends outer round surface is processed into light beam, and fineness exists
More than 6; With metal box cupling and tubular configured joint are created holistic two stairstepping unions in addition, single order laddertron joint, its endoporus employing fraising than larger diameter end is processed into finish and is existed
More than 6, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but be the interference size, joint is heated, make the end of its seamless hollow section under the normal temperature of packing into after the expansion, just clip is on seamless hollow section tightly after the joint cooling, and joint smaller diameter end outer round surface adopts rolled thread, its end is processed with annular seal groove, the built-in oil-resistant seal ring that is placed with of groove.Select the thick uniform seamless hollow section of another endwall for use, its two ends outer round surface is processed into light beam, and fineness exists
More than 6; Process a union that is complementary with above-mentioned stairstepping metallic pipe coupling in addition, the end endoporus employing fraising of this union is processed into finish and is existed
More than 6, each adopted size of its endoporus is the same with seamless hollow section external diameter nominal size, but be the interference size, joint is heated, make the end of its seamless hollow section of another root under the normal temperature of packing into after the expansion, just clip is in the end of seamless hollow section tightly after the joint cooling, and the other end of joint adopts the extruding internal thread, is screwed onto with the smaller diameter end with rolled thread of above-mentioned stairstepping metallic pipe coupling.The design because of joint adopt interference size and seamless hollow section tightly clip between two joints, adopted oil-resistant seal ring again together, so good airproof performance also can be avoided rupturing at the screw-thread ending place.
In a word, the above-mentioned various oil exploitation tests that are designed for of the utility model, good airproof performance, easy fracture is not reduced the loss, the production efficiency height.
First kind of structure chart of Fig. 1 the utility model.
Second kind of structure chart of Fig. 2 the utility model.
The third structure chart of Fig. 3 the utility model.
The 4th kind of structure chart of Fig. 4 the utility model.
Embodiment 1:
Select two uniform seamless hollow sections 1 of steel wall thickness for use, the outer round surface at its two ends is processed into light beam, and fineness is
6, alternative is processed into annular seal 2 with steel material, and the seal endoporus adopts fraising to be processed into optical surface, and its fineness is
6, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but is the interference size, and seal outer surface is processed into finish and is
6, and tapering, seal is heated to below the refining temperature, pack into the end of seamless hollow section, just clip is on seamless hollow section tightly after the joint cooling, and the end portion beyond the seamless hollow section seal adopts rolled thread, is screwed onto with the box cupling 3 with extruding internal thread of steel, the box cupling two ends are processed with the tapering that is complementary with seal outer surface, and the fineness of poppet surface also is
6, two seamless hollow sections that have seal are screwed into the box cupling from the box cupling two ends, screw to get final product, and a plurality of seamless hollow sections such as above-mentioned connection can be done sucker rod.
Embodiment 2:
Select two uniform seamless hollow sections 4 of steel wall thickness for use, the two ends outer round surface of its pipe is processed into light beam respectively, and fineness is
6; Alternative is processed into tubular configured joint 5 with steel material, and its endoporus adopts fraising, is processed into finish and is
6, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but be the interference size, joint is heated to below the refining temperature, two joints are respectively charged into the end of two seamless hollow sections, after the joint cooling just tightly clip on seamless hollow section, rolled thread is adopted in end beyond the tubular configured joint of seamless hollow section, be screwed onto with steel box cupling 6 with extruding internal thread, the box cupling two ends are processed with cannelure 7, the mid-oil-resistant seal ring 8 that is placed with of groove, so a plurality of seamless hollow sections link to each other, and can do sucker rod.
Embodiment 3:
Select two uniform seamless hollow sections 9 of steel wall thickness for use, the two ends outer round surface of its pipe is processed into light beam respectively, and fineness is
7, other processes a steel stairstepping union 10, and its endoporus employing fraising than larger diameter end is processed into finish and is
7, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but is the interference size, and joint is heated to below the refining temperature, make the end of its seamless hollow section under the normal temperature of packing into after the expansion, after the joint cooling just tightly clip on seamless hollow section.Joint smaller diameter end outer round surface adopts rolled thread, leaves one section polished rod less than the major diameter of thread size in its end, is processed with annular seal groove 11 on the polished rod, the built-in oil-resistant seal ring 12 that is placed with of groove.Process a steel joint 13 that is complementary with above-mentioned stairstepping union in addition, the end endoporus employing fraising of this joint is processed into finish and is
7, it is the same with seamless hollow section external diameter nominal size that its endoporus is respectively spent size, but be the interference size, joint is heated to below the refining temperature, pack into after it the is expanded end of the normal temperature seamless hollow section of another root down, just clip is on seamless hollow section tightly after the cooling, and the other end of joint adopts and pushes internal thread, the smaller diameter end with rolled thread that connects shape with above-mentioned stairstepping pipe is screwed onto, and the oil-resistant seal ring optical surface of joint therewith partly fits tightly.So several seamless hollow sections link to each other, and can do sucker rod.
Embodiment 4:
Its basic structure is identical with embodiment 2, and only oil-resistant seal ring 14 is placed between joint 15 and the box cupling 16, promptly is processed with the cannelure that is complementary on the corresponding surface of joint and box cupling.
Claims (6)
1, a kind of oil recovery latus rectum hollow rod is made up of seamless hollow section, box cupling, seal, it is characterized in that:
(1) outer round surface at seamless hollow section two ends is processed into light beam, and fineness exists
More than 6;
(2) seal is a tubular configured joint, and its bore area fineness exists
More than 6, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but is the interference size, and clip is on seamless hollow section;
(3) end portion beyond the tubular configured joint adopts rolled thread on the seamless hollow section, is screwed onto with the box cupling with extruding internal thread;
(4) box cupling two ends and tubular configured joint sealing.
2, a kind of oil recovery latus rectum hollow rod as claimed in claim 1 it is characterized in that the box cupling two ends are processed with the tapering that is complementary with the tubular configured joint external surface, and the fineness of poppet surface exists all
More than 6.
3, a kind of oil recovery latus rectum hollow rod as claimed in claim 1 is characterized in that the interface of box cupling both ends of the surface and tubular configured joint has cannelure, puts oil-resistant seal ring in the groove.
4, a kind of oil recovery latus rectum hollow rod as claimed in claim 3 is characterized in that the two ends of described cannelure at box cupling.
5, a kind of oil recovery latus rectum hollow rod as claimed in claim 3 is characterized in that described cannelure is made up of the two ends and the tubular configured joint end of box cupling.
6, a kind of oil recovery latus rectum hollow rod as claimed in claim 1 is characterized in that box cupling and tubular configured joint are fabricated to holistic two stairstepping unions, and one of them union exists than the bore area fineness of larger diameter end
More than 6, the endoporus nominal size is the same with seamless hollow section external diameter nominal size, but is the interference size, and clip is on seamless hollow section, and joint smaller diameter end outer round surface adopts rolled thread, and its end is processed with annular seal groove, the built-in oil-resistant seal ring that is placed with of groove; One end bore area fineness of another one union exists
More than 6, its nominal size is the same with seamless hollow section external diameter nominal size, but is the interference size, and clip is on seamless hollow section, the other end of union adopts the extruding internal thread, is screwed onto with the smaller diameter end with rolled thread of above-mentioned stairstepping union.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219666 CN2177794Y (en) | 1993-07-27 | 1993-07-27 | Hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219666 CN2177794Y (en) | 1993-07-27 | 1993-07-27 | Hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2177794Y true CN2177794Y (en) | 1994-09-21 |
Family
ID=33799003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93219666 Expired - Fee Related CN2177794Y (en) | 1993-07-27 | 1993-07-27 | Hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2177794Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644444A (en) * | 2012-04-24 | 2012-08-22 | 山东东宝钢管有限公司 | Double-seal anti-corrosion water injection well oil pipe |
| CN106869818A (en) * | 2017-05-04 | 2017-06-20 | 柳富献 | A kind of hollow rod joint |
| CN112112578A (en) * | 2020-11-23 | 2020-12-22 | 东营市金亿来石油机械有限公司 | Hollow sucker rod of anti-deflection |
-
1993
- 1993-07-27 CN CN 93219666 patent/CN2177794Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644444A (en) * | 2012-04-24 | 2012-08-22 | 山东东宝钢管有限公司 | Double-seal anti-corrosion water injection well oil pipe |
| CN106869818A (en) * | 2017-05-04 | 2017-06-20 | 柳富献 | A kind of hollow rod joint |
| CN112112578A (en) * | 2020-11-23 | 2020-12-22 | 东营市金亿来石油机械有限公司 | Hollow sucker rod of anti-deflection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |