CN204283875U - Combined and welded metal stator single screw pump - Google Patents
Combined and welded metal stator single screw pump Download PDFInfo
- Publication number
- CN204283875U CN204283875U CN201420197532.4U CN201420197532U CN204283875U CN 204283875 U CN204283875 U CN 204283875U CN 201420197532 U CN201420197532 U CN 201420197532U CN 204283875 U CN204283875 U CN 204283875U
- Authority
- CN
- China
- Prior art keywords
- screw pump
- stator
- metal stator
- single screw
- combined
- 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
Links
Landscapes
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a kind of combined and welded metal stator single screw pump, metal stator integral assembling, in screw pump outer tube, is characterized in that: each single-unit metal stator length is 800-1200mm.Therefore, it is high that this kind of metal stator single screw pump has machining accuracy, and quality is good, long service life, wear-resistant, high temperature resistant, corrosion-resistant, moment of torsion is little, easily change after rotor wearing and tearing, the features such as oil producing operation expense is low, can realize rapidly producing in enormous quantities, meet oilfield market demand.
Description
Art
The utility model relates to the oil rig of a kind of ground, oil field drive screw oil production system, and especially adopt the swollen tire location of core rod, laser bonding and argon arc welding technology carry out a kind of novel metal stator single screw pump of metal stator connection.
Background technique
At present, known oil field ground drive screw oil production system is made up of surface drive and down-hole single screw pump system two large divisions.Down-hole single screw pump system is made up of parts such as centralizer of screw pump, single screw pump, oil pipe torque anchor, screen casing, tail pipe, plugs.
Single screw pump mainly comprises upper connection, stator, rotor, and lower contact and snubber five parts, realizing oil recovery object essential elements is stators and rotators.
Single screw pump divides by stator material elastomer stator single screw pump and metal stator single screw pump two kinds, metal stator single screw pump and elastomer stator single screw pump compare and have many advantages, as wear-resisting in stator, heatproof, long service life, without swelling, rotor turns moment of torsion is little, but metal stator single screw pump also has some defects, mainly:
1, the metal stator length of bulk metal stator single screw pump is 3600-8000mm, and mechanical processing difficulty is large, and machining accuracy can not meet design requirement, and reject rate is high, and processing equipment of stator Meteorological is large.
2, after combining the metal stator length reduction of metal stator single screw pump, single stator machining accuracy reaches technical requirements, but makes the metal stator dimensional accuracy after assembling overproof because assembly connection method has problems, and can not meet design requirement.If any the stator of combination metal stator screw pump adopt stator connecting sleeve to connect, stator location excircle dimension that is inaccurate and stator connecting sleeve also significantly limit major diameter, the manufacturing and designing of huge discharge screw pump, and limits the using scope of screw pump; The single stator length design size of some combination metal stator screw pumps is too little, only have 120-380mm, after assembling, integrating error are large, and after the welding manner taked makes stator weld, distortion is large, make the metal stator dimensional accuracy after assembling overproof equally, can not meet design requirement.
Above-mentioned shortcoming significantly limit using of metal stator single screw pump and develops, the production of metal stator single screw pump product does not form scale so far, metal stator single screw pump still fails to replace elastomer stator single screw pump, can not meet the demand of oilfield market.
Summary of the invention
The purpose of this utility model adopts rational, advanced technical matters method, designs and produce a kind of high-quality, metal stator single screw pump product of meeting the alternative elastomer stator single screw pump of oilfield market demand continually and steadily.
The utility model takes following technological scheme for achieving the above object:
1, single-unit metal stator length reasonable in design, by repeatedly manufacturing experimently and testing, determines that single-unit metal stator length is 800-1200mm.
2, combine metal stator assembling and adopt the swollen tire location of core rod, laser bonding is connected with argon arc welding technology, and metal stator assembly precision is high, and the distortion of welding junction place is little.
3, select suitable metal stator and metallic rotator raw material, determine corresponding surface intensified technique
Metal stator material is 38CrMoAl superior alloy steel, and metallic rotator material is 40CrNiMo superior alloy steel; Stators and rotators surface intensified technique is glow discharge nitriding technique, stator nitrogenize rear surface hardness HV800-900, rotor nitrogenize rear surface hardness HV500-600, glow discharge nitriding technique heat treatment deformation is little, the machining accuracy of stators and rotators can be ensured, stators and rotators is high through glow discharge nitriding rear surface hardness, there is good wear resistance, heat resistance and corrosion resistance, and the coupling of stators and rotators surface hardness makes rotor become vulnerable part, in oil field operation, facilitate rotor to change, reduce oil producing operation expense.
4, the metal stator integral assembling that assemble welding is good, in screw pump outer tube, screws upper and lower joint, the metallic rotator of apolegamy corresponding size,
Then connect snubber, a high-quality combined and welded metal stator single screw pump completes manufacturing process.The beneficial effects of the utility model are: it is high that combined and welded metal stator single screw pump has precision, quality is good, long service life, wear-resistant, high temperature resistant, corrosion-resistant, moment of torsion is little, easily changes, the features such as oil producing operation expense is low after rotor wearing and tearing, can realize rapidly producing in enormous quantities, meet oilfield market demand.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated
Fig. 1 is the utility model combined and welded metal stator single screw pump schematic diagram.
Fig. 2 is the swollen tire location of combined and welded metal stator single screw pump core rod, laser bonding and argon arc welding embodiment schematic diagram.
In FIG, 1. oil connection, 2. centralizer of screw pump, 3. sucker rod, 4 oil connections, 5. rod collar, 6. upper connection, 7. screw pump outer tube, 8. stator, 9. rotor, 10. lower contact, 11. position limit pins, 12. snubbers, 13. oil connections, 14. oil pipe torque anchors, 15. screen casings.
In fig. 2, a. stator A, b. laser bonding and argon arc welding weld seam, c. stator B, d. core rod is swollen tire.
Embodiment
The utility model is the improvement carried out for metal stator single screw pump defect of the prior art, according to metal stator single screw pump stator, rotor structure and the swollen tire of core rod, laser bonding and argon arc welding technical characterstic and design, its concrete grammar utilizes the swollen tire helical outer surface of core rod and metal stator surface of internal cavity close contact that metal stator is located, and utilizes laser bonding and argon arc welding seam deformation little guarantee metal stator assembly precision thus realize the technical requirement on design of metal stator single screw pump stator assembling.
In FIG, combination metal stator (8) is through the swollen tire location of core rod, and laser bonding and argon arc welding link into an integrated entity, and after welding, integral assembling is in screw pump outer tube (7).
In the embodiment's schematic diagram shown in Fig. 2, core rod is swollen, and tire (d) screws in stator A (a) of same size with in stator B (c), stator A (a) and stator B (c) surface of contact are close to, screw the EXPANSION ANCHOR BOLTS of the swollen tire (d) of core rod, make the swelling of core rod swollen tire (d) helical outer surface in the inner cavity surface of stator A (a) with stator B (c), thus make stator A (a) and stator B (c) location.Start laser bonding and argon arc welding equipment respectively, stator A (a) and stator B (c) contact position are welded.Postwelding unscrews the EXPANSION ANCHOR BOLTS of the swollen tire (d) of core rod, and the expansion surface of core rod is swollen tire (d) resets, and takes out the swollen tire (d) of core rod, and stator A (a) and stator B (c) gang welding assembly process complete.
Claims (1)
1. a combined and welded metal stator single screw pump, metal stator integral assembling, in screw pump outer tube, is characterized in that: each single-unit metal stator length is 800-1200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197532.4U CN204283875U (en) | 2014-04-19 | 2014-04-19 | Combined and welded metal stator single screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197532.4U CN204283875U (en) | 2014-04-19 | 2014-04-19 | Combined and welded metal stator single screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283875U true CN204283875U (en) | 2015-04-22 |
Family
ID=52867040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197532.4U Expired - Fee Related CN204283875U (en) | 2014-04-19 | 2014-04-19 | Combined and welded metal stator single screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271074A (en) * | 2015-05-13 | 2017-01-04 | 盐城世宏石油装备有限公司 | Metal stator screw pump stator assembling positioning expander tire |
| CN109915044A (en) * | 2019-03-22 | 2019-06-21 | 中国地质大学（北京） | A kind of assembled helicoid hydraulic motor metal stator and its axial processing and assembling |
-
2014
- 2014-04-19 CN CN201420197532.4U patent/CN204283875U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271074A (en) * | 2015-05-13 | 2017-01-04 | 盐城世宏石油装备有限公司 | Metal stator screw pump stator assembling positioning expander tire |
| CN106271074B (en) * | 2015-05-13 | 2018-08-17 | 盐城世宏石油装备有限公司 | Metal stator screw pump stator assembles positioning expander tire |
| CN109915044A (en) * | 2019-03-22 | 2019-06-21 | 中国地质大学（北京） | A kind of assembled helicoid hydraulic motor metal stator and its axial processing and assembling |
| CN109915044B (en) * | 2019-03-22 | 2023-11-21 | 中国地质大学（北京） | Axial machining and assembling process for metal stator of assembled screw drilling tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204283875U (en) | Combined and welded metal stator single screw pump | |
| CN200958369Y (en) | Weldless drilling rod for coal mine | |
| CN201620773U (en) | Novel welding type drill collar | |
| CN204628000U (en) | Hot extracting thick oil metal stator screw pump | |
| CN204458326U (en) | A kind of graded ceramic plunger | |
| CN203614052U (en) | Self-locking threaded joint | |
| CN205779598U (en) | Horizontal well Special oil pump | |
| CN205841092U (en) | Split type wall-thickness screw motor such as grade and helicoid hydraulic motor thereof | |
| CN105195637A (en) | Bimetal composite pipe liquid expansion forming feeding device and process | |
| CN106271074B (en) | Metal stator screw pump stator assembles positioning expander tire | |
| CN206111647U (en) | Long axis pump is with linking boss | |
| CN105927521A (en) | Specific oil well pump for horizontal well | |
| CN204002756U (en) | The public wet joint of a kind of used in oil well logging | |
| CN109807249B (en) | Bimetal composite pipe expansion joint forming test device | |
| CN203131235U (en) | Bimetal composite pipe for medium/high-pressure oil gas | |
| CN207195165U (en) | A kind of all-metal screw pump | |
| CN204692808U (en) | A kind of pipe joint | |
| CN205743816U (en) | Old well reparation thermal extraction casing head | |
| CN204610279U (en) | Metal stator screw pump stator assembling and positioning is swollen tire | |
| CN205349677U (en) | Annular plunger float buret formula oil -well pump | |
| CN217558271U (en) | Connecting mechanism of elliptical continuous sucker rod | |
| CN202467732U (en) | High-temperature-resistant expansion pipe string | |
| CN206111648U (en) | Long axis pump is with linking axle sleeve | |
| CN204200106U (en) | A kind of hydraulic casing centralizer | |
| CN202338210U (en) | Metallic expansion type external segmented completion tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: YANCHENG SHIHONG PETROLEUM EQUIPMENT Co.,Ltd. Document name: Notification of an Office Action |
|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |