CN109578270B - All-metal gap bridge type screw pump - Google Patents
All-metal gap bridge type screw pump Download PDFInfo
- Publication number
- CN109578270B CN109578270B CN201811479082.7A CN201811479082A CN109578270B CN 109578270 B CN109578270 B CN 109578270B CN 201811479082 A CN201811479082 A CN 201811479082A CN 109578270 B CN109578270 B CN 109578270B
- Authority
- CN
- China
- Prior art keywords
- metal
- bridge
- metal stator
- stator
- outer tube
- 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.)
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Links
- 239000002184 metal Substances 0.000 title claims abstract description 84
- 125000003003 spiro group Chemical group 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 15
- 239000003129 oil well Substances 0.000 abstract description 11
- 230000005484 gravity Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to an all-metal gap bridge type screw pump which comprises an upper joint, a gap bridge outer pipe, a metal rotor, a metal stator centering ring, a metal stator, a lower joint and a limiter, wherein the upper joint is connected with the upper joint; the bridge outer tube bears the gravity generated by the lower tail tube, and the metal stator righting ring enables the bridge outer tube and the metal stator to be always in a coaxial position, so that the metal stator is prevented from tensile deformation and even breakage, and pump clamping is avoided; in addition, the hollow limiter can enable devices such as a perforating gun, a cable depth correcting instrument and the like to pass through, so that oil pipes, a pump body and a lower tail pipe do not need to be all lifted out of an oil well before oil well perforation, testing and other oil testing operations are carried out, the operation efficiency is greatly improved, time and labor are saved, and the operation cost is saved.
Description
Technical Field
The invention relates to an all-metal gap bridge type screw pump.
Background
Along with large-area exploitation of oil pumping of an oil field, the all-metal screw oil pump starts to be gradually applied in batches; although the all-metal screw oil pump solves the problems of no wear resistance, no temperature resistance, low service life, easy swelling and the like of the rubber stator screw pump, meets the use requirements of thickened oil exploitation of an oil field, because the all-metal screw oil pump adopts a combined stator welding, thin-wall outer sleeve and locating pin type limiter structure, when the lower end of the all-metal screw oil pump is hung with heavy load, namely, the lower tail pipe is longer (the lower end of the pump is connected with more than 1000 meters of lower tail pipe), the metal stator is easy to be stretched and deformed by gravity and even broken in the use process, so that the pump is blocked; moreover, the positioning pin type limiter cannot pass through devices such as a perforating gun, a cable depth correcting instrument and the like, so that oil pipes, a pump body and a lower tail pipe are required to be all lifted out of an oil well before oil well perforation, testing and other oil testing operations are carried out, time and labor are wasted, and extra operation cost is caused due to shutdown, so that the device needs to be further improved.
Disclosure of Invention
Aiming at the current state of the art, the invention aims to provide a method for preventing the metal stator from tensile deformation or even fracture, thereby avoiding clamping the pump; and the efficiency of oil testing operations such as perforating gun and underground test is greatly improved, time and labor are saved, and the operation cost is saved.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an all-metal bridge screw pump, includes top connection, outer tube of passing a bridge, metal rotor, metal stator righting ring, metal stator, lower clutch, stopper, its characterized in that, the one end of stopper inserts the spiro union in the one end of lower clutch inside, the one end of metal stator inserts the spiro union in the other end of lower clutch inside, the other end of metal stator inserts in the one end of outer tube of passing a bridge inside, the one end of outer tube of passing a bridge also inserts the spiro union in the other end of lower clutch inside, the other end outside cover of metal stator has the metal stator righting ring of spiro union, the one end of top connection inserts the spiro union in the other end of outer tube of passing a bridge inside; the inside interlude of metal stator is connected with rotatable metal rotor, the other end of metal rotor is located the inside of gap bridge outer tube.
Preferably, the metal stator righting ring is positioned inside the gap bridge outer tube and is mutually attached to the inner wall of the gap bridge outer tube.
Preferably, a ripple cavity is formed in the metal stator.
Preferably, a first counter bore is formed in the center of one end of the limiter, a second counter bore is formed in the center of the other end of the limiter, a taper hole is formed in the center of the bottom surface of the second counter bore, and a through hole is formed between the center of the bottom surface of the taper hole and the center of the bottom surface of the first counter bore.
Preferably, the screw end of the metal rotor passes through the bellows chamber and protrudes into the first counterbore.
Compared with the prior art, the invention has the advantages that: the invention is provided with the outer bridge pipe and the metal stator centering ring, the outer bridge pipe bears the gravity generated by the lower tail pipe, and the metal stator centering ring enables the outer bridge pipe and the metal stator to be always in the coaxial position, so that the metal stator is prevented from tensile deformation or even fracture, and pump clamping is avoided; in addition, the invention also provides a hollow limiter which can enable devices such as a perforating gun, a cable depth correcting instrument and the like to pass through, so that oil pipes, a pump body and a lower tail pipe do not need to be all lifted out of an oil well before oil well perforation, test and other oil testing operations are carried out, the operation efficiency is greatly improved, the time and the labor are saved, and the operation cost is saved.
Drawings
Fig. 1 is a cross-sectional structural view of the present invention.
Detailed Description
As shown in fig. 1, an all-metal gap bridge screw pump comprises an upper joint 1, a gap bridge outer tube 2, a metal rotor 3, a metal stator centering ring 4, a metal stator 5, a lower joint 6 and a limiter 7; one end of a limiter 7 is inserted and screwed into one end of the lower joint 6, one end of a metal stator 5 is inserted and screwed into the other end of the lower joint 6, the other end of the metal stator 5 is inserted into one end of the outer bridging tube 2, one end of the outer bridging tube 2 is also inserted and screwed into the other end of the lower joint 6, a metal stator centering ring 4 is sleeved and screwed outside the other end of the metal stator 5, and the metal stator centering ring 4 is positioned in the outer bridging tube 2 and is mutually attached with the inner wall of the outer bridging tube 2; one end of the upper joint 1 is inserted into and screwed with the other end of the bridge outer tube 2; the inside of the metal stator 5 is connected with a rotatable metal rotor 3 in a penetrating way, and the other end of the metal rotor 3 is positioned in the gap bridge outer tube 2; the inside of the metal stator 5 is provided with a ripple cavity 51, one end center of the limiter 7 is provided with a first counter bore 71, the other end center of the limiter 7 is provided with a second counter bore 73, the bottom surface center of the second counter bore 73 is provided with a taper hole 74, and a through hole 72 is formed between the bottom surface center of the taper hole 74 and the bottom surface center of the first counter bore 71; the screw end 31 of the metal rotor 3 passes through the bellows chamber 51 and protrudes into the first counterbore 71.
When the device is used, the other end of the upper joint 1 is connected and communicated with an oil pipe, a second counter bore 73 on the other end of the limiter 7 is connected with a torque anchor and a lower tail pipe, the weight of the lower tail pipe acts on the outer bridging pipe 2 through the limiter 7 and the lower joint 6, the other end of the metal stator 5 is in a suspended state due to the existence of a metal stator centering ring 4, the metal stator centering ring 4 plays a role in centering, the metal stator 5 is always in a coaxial position with the outer bridging pipe 2, and the metal stator 5 is ensured not to be influenced by the weight of the lower tail pipe; when the outer pipe 2 of the bridge is stretched by the weight of the lower tail pipe, the lower joint 6 and the limiter 7 can move along with the outer pipe 2 of the bridge, so that one end of the metal stator 5 can also move along with the lower joint 6, and the metal stator is smoothly separated from the metal rotor 3, so that the problems of deformation and pump clamping can not occur; therefore, when oil testing operations such as perforating gun descending and underground testing are needed, an oil pipe, the invention and a lower tail pipe are not needed to be lifted out of an oil well, only the metal rotor 3 is needed to be lifted out, then the perforating gun or a cable depth correcting instrument and the like are put into a specified underground position through the oil pipe, the invention and the lower tail pipe to be operated, after the testing is finished, the perforating gun or the cable depth correcting instrument is taken out, and the metal rotor 3 is put in again, so that oil extraction can be continued.
Along with large-area exploitation of oil pumping of an oil field, the all-metal screw oil pump starts to be gradually applied in batches; although the all-metal screw oil pump solves the problems of no wear resistance, no temperature resistance, low service life, easy swelling and the like of the rubber stator screw pump, meets the use requirements of thickened oil exploitation of an oil field, because the all-metal screw oil pump adopts a combined stator welding, thin-wall outer sleeve and locating pin type limiter structure, when the lower end of the all-metal screw oil pump is hung with heavy load, namely, the lower tail pipe is longer (the lower end of the pump is connected with more than 1000 meters of lower tail pipe), the metal stator is easy to be stretched and deformed by gravity and even broken in the use process, so that the pump is blocked; the positioning pin type limiter cannot enable the perforating gun, the cable depth correcting instrument and other devices to pass through, so that oil pipes, a pump body and a lower tail pipe are required to be all lifted out of an oil well before oil well perforation, testing and other oil testing operations are carried out, time and labor are wasted, and extra operation cost is caused by shutdown; the invention is provided with the outer bridging tube 2 and the metal stator centering ring 4, the outer bridging tube 2 bears the gravity generated by the lower tail tube, the metal stator centering ring 4 ensures that the outer bridging tube 2 and the metal stator 5 are always in the coaxial position, the metal stator 5 is prevented from stretching deformation or even breaking, and pump clamping is avoided; in addition, the invention also provides the hollow limiter 7, which can enable devices such as a perforating gun, a cable depth correcting instrument and the like to pass through, so that oil pipes, a pump body and a lower tail pipe do not need to be all lifted out of an oil well before oil well perforation, testing and other oil testing operations are carried out, the operation efficiency is greatly improved, the time and the labor are saved, and the operation cost is saved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; while the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that modifications may be made to the techniques described in the foregoing embodiments, or that certain features may be substituted for those illustrated therein; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. The utility model provides an all-metal bridge screw pump, includes top connection, outer tube of passing a bridge, metal rotor, metal stator righting ring, metal stator, lower clutch, stopper, its characterized in that, the one end of stopper inserts the spiro union in the one end of lower clutch inside, the one end of metal stator inserts the spiro union in the other end of lower clutch inside, the other end of metal stator inserts in the one end of outer tube of passing a bridge inside, the one end of outer tube of passing a bridge also inserts the spiro union in the other end of lower clutch inside, the other end outside cover of metal stator has the metal stator righting ring of spiro union, the one end of top connection inserts the spiro union in the other end of outer tube of passing a bridge inside; the inside of the metal stator is connected with a rotatable metal rotor in a penetrating way, and the other end of the metal rotor is positioned in the gap bridge outer tube;
the metal stator centering ring is positioned in the bridge outer tube and is mutually attached to the inner wall of the bridge outer tube, and the bridge outer tube and the metal stator are always in a coaxial position;
the first counter bore is arranged at the center of one end of the limiter, the second counter bore is arranged at the center of the other end of the limiter, the taper hole is arranged at the center of the bottom surface of the second counter bore, and a through hole is arranged between the center of the bottom surface of the taper hole and the center of the bottom surface of the first counter bore.
2. An all-metal gap bridge screw pump according to claim 1, wherein the metal stator is internally provided with a corrugated cavity.
3. An all-metal gap-bridge screw pump according to claim 1, wherein the screw end of the metal rotor passes through the bellows chamber and protrudes into the first counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479082.7A CN109578270B (en) | 2018-12-05 | 2018-12-05 | All-metal gap bridge type screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479082.7A CN109578270B (en) | 2018-12-05 | 2018-12-05 | All-metal gap bridge type screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578270A CN109578270A (en) | 2019-04-05 |
| CN109578270B true CN109578270B (en) | 2023-10-31 |
Family
ID=65926330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811479082.7A Active CN109578270B (en) | 2018-12-05 | 2018-12-05 | All-metal gap bridge type screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578270B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242559A (en) * | 2019-07-21 | 2019-09-17 | 中石化石油工程技术服务有限公司 | A kind of subsurface progressive cavity and the construction method for passing through subsurface progressive cavity |
| CN114215743A (en) * | 2021-12-28 | 2022-03-22 | 潍坊宝峰机械有限公司 | Super large displacement high-lift screw pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2641327Y (en) * | 2003-09-11 | 2004-09-15 | 于宝奎 | Sand blocking proof type screw stem pump |
| CN2700606Y (en) * | 2003-12-03 | 2005-05-18 | 扬振平 | Ground surface driven screw pump for rodless pumping operation |
| CN201121583Y (en) * | 2007-10-19 | 2008-09-24 | 宁波正鼎石油机械设备制造有限公司 | Extension type full-metal single screw oil pump |
| DE102009010107A1 (en) * | 2009-02-21 | 2010-08-26 | Wilo Se | Eccentric spiral pump for use in domestic waste water drainage system, has rotor provided with spiral-shaped or screw-shaped outer contour that is driven by drive motor, where outer surface of rotor is formed by rubber or flexible plastic |
| CN108223358A (en) * | 2018-01-31 | 2018-06-29 | 新乡市夏烽电器有限公司 | Latent oil directly-driven screw pump unit |
| CN208106738U (en) * | 2018-04-02 | 2018-11-16 | 盐城世宏石油装备有限公司 | A kind of all-metal screw formula oil well pump |
-
2018
- 2018-12-05 CN CN201811479082.7A patent/CN109578270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2641327Y (en) * | 2003-09-11 | 2004-09-15 | 于宝奎 | Sand blocking proof type screw stem pump |
| CN2700606Y (en) * | 2003-12-03 | 2005-05-18 | 扬振平 | Ground surface driven screw pump for rodless pumping operation |
| CN201121583Y (en) * | 2007-10-19 | 2008-09-24 | 宁波正鼎石油机械设备制造有限公司 | Extension type full-metal single screw oil pump |
| DE102009010107A1 (en) * | 2009-02-21 | 2010-08-26 | Wilo Se | Eccentric spiral pump for use in domestic waste water drainage system, has rotor provided with spiral-shaped or screw-shaped outer contour that is driven by drive motor, where outer surface of rotor is formed by rubber or flexible plastic |
| CN108223358A (en) * | 2018-01-31 | 2018-06-29 | 新乡市夏烽电器有限公司 | Latent oil directly-driven screw pump unit |
| CN208106738U (en) * | 2018-04-02 | 2018-11-16 | 盐城世宏石油装备有限公司 | A kind of all-metal screw formula oil well pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109578270A (en) | 2019-04-05 |
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