CN106271074B - Metal stator screw pump stator assembles positioning expander tire - Google Patents
Metal stator screw pump stator assembles positioning expander tire Download PDFInfo
- Publication number
- CN106271074B CN106271074B CN201510244162.4A CN201510244162A CN106271074B CN 106271074 B CN106271074 B CN 106271074B CN 201510244162 A CN201510244162 A CN 201510244162A CN 106271074 B CN106271074 B CN 106271074B
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- Prior art keywords
- stator
- tire
- metal stator
- metal
- screw pump
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
Abstract
The invention discloses a kind of metal stator screw pump stators to assemble positioning expander tire, it is designed according to the principle combination metal stator screw pump stator spiral cavity feature of elastic expansion tire, it is characterized in that on the matrix of twin-screw rotor, it is designed to 8 valve elastic expansion tires, the double helix outer surface of swollen tire is set to bulge with travelling expansion core and fixed expansion core, it is in close contact comprehensively with two single-unit metal stator spiral surface of internal cavity, to fix two single-unit metal stators, make two continuous dislocation-frees in single-unit metal stator spiral inner cavity.Metal stator screw pump stator assembly positioning expander mould has accurate positioning, and whole metal stator concentricity and straightness are respectively less than 0.04mm, the continuous dislocation-free in stator spiral inner cavity after the completion of stator assembly；Positioning process is simple, easy to operate, and positioning time is short, and qualification rate is high；The features such as manufacturing cost is low, plastic-less deformation, service life is long solves metal stator assembly positioning and problem is not allowed, so that metal stator screw pump is realized mass production rapidly, meet oilfield market demand.
Description
Technical field
The present invention relates to a kind of metal stator screw pump stators to assemble positioning expander tire, is used more particularly, to a kind of oil field
Heavy crude heat extraction metal stator screw pump stator assembles positioning expander tire.
Background technology
There are mainly two types of the metal stator screw pump developed of the country is classified by stator at present：One is monoblock type metals
Stator screw pump, one is combined metal stator screw pumps.
Monoblock type metal stator screw pump is since mechanical processing difficulty is big, and stator spiral inner cavity scale error is big after processing,
Rough surface cannot meet design requirement, so far not yet in field use.
Combined metal stator screw pump is that bulk metal stator is divided into then 4 to save less, the single-unit stators of at most 16 sections, so
Single-unit stator is machined afterwards, reduces the mechanical processing difficulty of metal stator, makes the processing essence of single-unit metal stator
Degree improves, and meets design requirement, and still, the combination of single-unit metal stator is assembled into a great problem, and cumulative errors cause to combine greatly
Metal stator qualification rate afterwards is very low.
The metal stator for the metal stator screw pump that the enterprise that the country has at present develops is connected using stator connector sleeve, stator
Positioning is inaccurate, and technique is cumbersome, and positioning time is long, and efficiency is low, and qualification rate is low, and since tubing size is limited, stator connector sleeve
Outer garden size limit the design and manufacture of major diameter, huge discharge screw pump.Limit the use scope of screw pump.Some enterprises
The stator of the metal stator screw pump of development in such a way that lenticular contact surface positions or positions finger setting, stator assembly after by
Big in cumulative errors, whole metal stator dimensional accuracy is overproof, and qualification rate is low.
The above problem significantly limits using and developing for metal stator screw pump, and metal stator screw pump product is so far
Do not form scale yet, cannot meet oil field oil exploitation especially thickened oil recovery the needs of.
Invention content
Technical problem to be solved by the invention is to provide a kind of metal stators to assemble positioning tool, solves metal stator dress
With the inaccurate problem of positioning.
The present invention solves the technical solution that metal stator assembly positioning is not allowed problem to be taken：
1. the principle using elastic expansion tire is designed to 8 valve elastic expansion tires on the matrix of twin-screw rotor, swollen with moving about
Core and fixed expansion core make the double helix outer surface of swollen tire bulge, and are closely connect comprehensively with two single-unit metal stator spiral surface of internal cavity
It touches, to fix two single-unit metal stators, makes two continuous dislocation-frees in single-unit metal stator spiral inner cavity, reach assembly positioning
Accurate purpose.
2. swollen tire material uses the high-quality spring steel makings of 65Mn, quenched rear hardness 42HRC-46HRC to keep swollen tire elasticity good
It is not easy to be plastically deformed, long lifespan is durable.
3. swollen tire length is 2 times of metal stator helical pitch, reach design requirement after making two single-unit metal stator positioning.
Compared with existing metal stator screw pump stator assembles location technology, the beneficial effects of the invention are as follows：
1. metal stator screw pump stator assembles positioning expander tire accurate positioning, whole metal stator is same after the completion of stator assembly
Axis degree and straightness are respectively less than 0.04mm, the continuous dislocation-free in stator spiral inner cavity.
2. metal stator screw pump stator assembles, positioning expander tire positioning process is simple, and easy to operate, positioning time is short, qualification rate
It is high.
3. metal stator screw pump stator assembly positioning expander tire manufacturing cost is low, plastic-less deformation, service life is long.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples
Fig. 1 is metal stator screw pump stator assembly positioning expander tire schematic diagram.
Fig. 2 is metal stator screw pump stator assembly positioning expander tire embodiment schematic diagram.
In Fig. 1,1. swollen tire；2. expansion core of moving about；3. fixing expansion core；4. expansion core connecting rod；5. swollen tire connecting tube；6. swollen tire rotation
Handle；7. expansion core rotating handle.
In fig. 2,1. swollen tire；2. expansion core of moving about；3. fixing expansion core；4. expansion core connecting rod；5. swollen tire connecting tube；6. swollen tire rotation
Handle；7. expansion core rotating handle；8. single-unit metal stator A；9. two single-unit metal stator contact surfaces (weld seam)；10. single-unit metal stator
B。
Specific implementation mode
The present invention be directed to the inventions that metal stator screw pump stator assembly orientation problem is carried out, according to elastic expansion tire
Principle combination metal stator screw pump stator spiral cavity feature designs, and specific method is：
1. metal stator screw pump stator assembly positioning expander tire is to be designed to 8 valves elasticity on the matrix of twin-screw rotor
Swollen tire makes the double helix outer surface of swollen tire bulge, with two single-unit metal stator spiral inner cavities with travelling expansion core and fixed expansion core
Surface is in close contact comprehensively, to fix two single-unit metal stators, keeps two single-unit metal stator spiral inner cavities continuously error-free
Position.
2. swollen tire material uses the high-quality spring steel makings of 65Mn, quenched rear hardness 42HRC-46HRC to keep swollen tire elasticity good
It is not easy to be plastically deformed, travelling expansion core, fixed expansion core and expansion core connecting rod are manufactured using high-quality medium carbon alloy steel.
3. swollen tire length is 2 times of metal stator helical pitch, swollen tire original size and cavity gap in metal stator spiral
0.08mm。
The present invention is described in further detail below in conjunction with 2 embodiment of attached drawing：
First by single-unit metal stator A (8) and single-unit metal stator B (10) through examining qualified same size, fill respectively
It is stuck on two chucks in same axis, and by single-unit metal stator A (8) and single-unit metal stator B (10) contact face
Be close to, rotation single-unit metal stator A (8), with twin-screw mold core by single-unit metal stator A (8) and single-unit metal stator B (10) just
Step positioning, takes out twin-screw mold core, and metal stator screw pump stator is begun to use to assemble positioning expander tire, rotates expansion core rotating handle (7),
Swollen tire (1) is set to be in original size, rotation forces are swollen tire rotating handle (6) along metal stator spiral inner cavity sends swollen tire (1) center to
At two single-unit metal stator contact surfaces (weld seam) (9), expansion core rotating handle (7) is rotated, with travelling expansion core (2) and fixed expansion core (3)
Swollen tire (1) is set to bulge, in the spiral of swollen tire (1) helical outer surface and single-unit metal stator A (8) and single-unit metal stator B (10)
Chamber swelling, single-unit metal stator A (8) and single-unit metal stator B (10) are positioned, rotating chuck make single-unit metal stator A (8) and
Single-unit metal stator B (10) at the uniform velocity rotates, and is carried out to single-unit metal stator A (8) and single-unit metal stator B (10) contact surface (9)
Laser welding, postwelding rotate expansion core rotating handle (7), swollen tire (1) are made to return to original size, and rotation forces are swollen tire rotating handle (6) takes out swollen
Tire (1), single-unit metal stator A (8) and single-unit metal stator B (10) welding are completed, and are repeated above-mentioned action and are welded next single-unit
Metal stator, until completing whole single-unit metal stator welding, whole metal stator screw pump stator combination assembly process is completed.
Claims (2)
1. a kind of metal stator screw pump stator assembles positioning expander tire, including swollen tire, travelling expansion core, fixed expansion core, expansion core connecting rod,
Seven part of swollen tire connecting tube, swollen tire rotating handle and expansion core rotating handle is designed to 8 valve bullets it is characterized in that on the matrix of twin-screw rotor
Property swollen tire, so that the double helix outer surface of swollen tire is bulged with travelling expansion core and fixed expansion core, in two single-unit metal stator spirals
Chamber surface is in close contact comprehensively, fixes two single-unit metal stators.
2. metal stator screw pump stator according to claim 1 assembles positioning expander tire, it is characterized in that swollen tire length is gold
Belong to 2 times of stator helical pitch, swollen tire original size is 0.08mm with cavity gap in metal stator spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244162.4A CN106271074B (en) | 2015-05-13 | 2015-05-13 | Metal stator screw pump stator assembles positioning expander tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244162.4A CN106271074B (en) | 2015-05-13 | 2015-05-13 | Metal stator screw pump stator assembles positioning expander tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271074A CN106271074A (en) | 2017-01-04 |
| CN106271074B true CN106271074B (en) | 2018-08-17 |
Family
ID=57631747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510244162.4A Active CN106271074B (en) | 2015-05-13 | 2015-05-13 | Metal stator screw pump stator assembles positioning expander tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106271074B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309548A (en) * | 2017-08-28 | 2017-11-03 | 盐城世宏石油装备有限公司 | A kind of metal stator of screw pump welds outfit system |
| CN110341448B (en) * | 2019-07-25 | 2023-05-02 | 盐城市步高汽配制造有限公司 | Electric automobile double-rotor motor power device and system and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2438859A (en) * | 2006-06-05 | 2007-12-12 | Juan Zak | Toroidal fluid machine |
| CN201763617U (en) * | 2010-08-04 | 2011-03-16 | 李斌 | All-metal multiple-threaded spiral screw pump |
| CN201871975U (en) * | 2010-11-19 | 2011-06-22 | 贵州航天风华精密设备有限公司 | Expansion fixture for large thin-wall casings |
| CN204200570U (en) * | 2014-11-07 | 2015-03-11 | 中国石油化工股份有限公司 | Split all-metal screw pump |
| CN204283875U (en) * | 2014-04-19 | 2015-04-22 | 盐城世宏石油装备有限公司 | Combined and welded metal stator single screw pump |
| CN204610279U (en) * | 2015-05-13 | 2015-09-02 | 盐城世宏石油装备有限公司 | Metal stator screw pump stator assembling and positioning is swollen tire |
-
2015
- 2015-05-13 CN CN201510244162.4A patent/CN106271074B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2438859A (en) * | 2006-06-05 | 2007-12-12 | Juan Zak | Toroidal fluid machine |
| CN201763617U (en) * | 2010-08-04 | 2011-03-16 | 李斌 | All-metal multiple-threaded spiral screw pump |
| CN201871975U (en) * | 2010-11-19 | 2011-06-22 | 贵州航天风华精密设备有限公司 | Expansion fixture for large thin-wall casings |
| CN204283875U (en) * | 2014-04-19 | 2015-04-22 | 盐城世宏石油装备有限公司 | Combined and welded metal stator single screw pump |
| CN204200570U (en) * | 2014-11-07 | 2015-03-11 | 中国石油化工股份有限公司 | Split all-metal screw pump |
| CN204610279U (en) * | 2015-05-13 | 2015-09-02 | 盐城世宏石油装备有限公司 | Metal stator screw pump stator assembling and positioning is swollen tire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106271074A (en) | 2017-01-04 |
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