CN105889062B - Screw rod pump drive assembly - Google Patents
Screw rod pump drive assembly Download PDFInfo
- Publication number
- CN105889062B CN105889062B CN201610302913.8A CN201610302913A CN105889062B CN 105889062 B CN105889062 B CN 105889062B CN 201610302913 A CN201610302913 A CN 201610302913A CN 105889062 B CN105889062 B CN 105889062B
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- CN
- China
- Prior art keywords
- power transmission
- motor
- hard alloy
- mechanical seal
- transmission shaft
- 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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Classifications
-
- 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
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
-
- 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
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of screw rod pump drive assembly, at present Screw Pump of Oil Field drive device is directly typically driven using integrated form, it is unidirectional mechanical sealing structure that integrated form, which directly drives drive device, and it bears, and pressure is small, is unfavorable for the use of oil well mesohigh operating mode；And often trigger burn-down of electric motor when Current mechanical oil leak；The technical scheme is that the output end of motor and the power transmission shaft of screw pump are linked together by spline, mechanical seal and lower mechanical seal are provided with the take-off lever of power transmission shaft below cylinder radial bearing, sealing shroud is provided between upper and lower mechanical seal, sealing shroud is fixed on main shaft cylinder using limit screw, main shaft cylinder lower end welds together with lower flange, and lower flange is fixed together with blowout preventer.It is an advantage of the invention that using double-mechanical sealing structure design, it is pressure-resistant to reach more than 4.5Mpa, service life length；And the mechanical seal part split of motor and screw rod pump drive assembly designs, mechanical seal oil leak can be avoided to burn the generation of motor accident.
Description
Technical field
The invention belongs to producing well crude oil production facility technical field, specifically one kind can prevent drive device from leaking
The screw rod pump drive assembly of motor is ruined in rusting.
Background technology
Screw Pump of Oil Field typically directly drives drive device using integrated form at present, and it is unidirectional mechanical that integrated form, which directly drives drive device,
Sealing structure, it bears, and pressure is small, is unfavorable for the use of oil well mesohigh operating mode；It is and frequent when Current mechanical oil leak
Burn-down of electric motor can be triggered, so as to cause the generation of accident, cause the service life of screw pump shorter, replacing is repaired to it to be caused
The waste of a large amount of manpower and materials simultaneously improves production cost reduction operating efficiency.
The content of the invention
It is an object of the invention to provide a kind of screw rod pump drive assembly that can prevent drive device oil leak from burning motor.
The object of the present invention is achieved like this, and it includes：Motor, screw pump, it is characterized in that：The output end and spiral shell of motor
The power transmission shaft of bar pump is linked together by spline, in the hole at the output end insertion gland center of motor, gland and motor
Oil sealing is provided between output end；Gland cooperates and is fixed in the centre bore of upper flange with upper flange, and upper flange is reverse
It is fixed on motor housing；Main shaft cylinder upper end welds together with upper flange, is set between the upper end shoulder and gland of power transmission shaft
There is thrust bearing；Below thrust bearing, cylinder roller bearing is provided between power transmission shaft and main shaft cylinder；In cylinder roller bearing
Lower section, cylinder radial bearing is provided between main shaft cylinder at power transmission shaft multi-diameter shaft, the power transmission shaft below cylinder radial bearing
Take-off lever on be provided with mechanical seal and lower mechanical seal, sealing shroud, sealing shroud are provided between upper and lower mechanical seal
It is fixed on using limit screw on main shaft cylinder, main shaft cylinder lower end welds together with lower flange, and lower flange is fixed on blowout preventer
Together.
The gland is boss-shaped, and its cross section carries I-shaped ladder cavity.
Gland is provided with sealing gasket with upper flange joint.
The upper and lower mechanical seal is by holding screw, tight set, spring, spring groove, hard alloy blocks and bearing composition；Tightly
Determine screw to be fixed on the take-off lever of power transmission shaft through tight set；Tight set coordinates with spring groove gap, and spring is arranged on spring groove
In the notch in portion, the take-off lever gap of hard alloy blocks, hard alloy blocks and power transmission shaft is provided between spring groove bottom and bearing
Coordinate.
The spring groove is with being provided with the seam being engaged with hard alloy on bearing.
The hard alloy is divided into upper and lower hard alloy, and upper hard alloy is arranged on spring groove bottom, and lower hard alloy is set
Put in holder top, the contact surface of upper and lower hard alloy is sealing surface.
It is an advantage of the invention that：It is pressure-resistant to reach more than 4.5Mpa, service life using double-mechanical sealing structure design
It is long；And the mechanical seal part split of motor and screw rod pump drive assembly is designed, and mechanical seal oil leak can be avoided to burn electricity
Machine accident occurs；With oil-lubricated bearing Cooling Design, there is the discharge of bottom water, the detection of looking glass pasta, oiling with pressure etc. to design work(
Can, effectively extend bearing life；Different capacity grade motor can be used, and can directly be changed, different bar footpaths screw pump
Well is directly supporting, reduces lectotype selection apolegamy difficulty.
Brief description of the drawings
Fig. 1 is the structure schematic diagram of the present invention；
Fig. 2 is Fig. 1 F portions enlarged drawing；
Fig. 3 is Fig. 1 G portions enlarged drawing.
The present invention is described in further detail by example below in conjunction with accompanying drawing, but following examples is only this hair
Bright example therein, does not represent the right protection scope that is limited of the present invention, and the scope of the present invention is to weigh
Sharp claim is defined.
Embodiment
Example 1
Referring to Fig. 1 ~ 3, motor 1 is connected with the power transmission shaft 9 of screw rod pump drive assembly by spline, gland 2 and upper flange 14
Between sealing gasket be installed and connected by soket head cap screw 3, upper flange 14 is connected with motor 1 by hex bolts, gland 2 with
Power transmission shaft 9 is provided with thrust bearing 6 at C, and main shaft cylinder 16 is with upper flange 14 by the company of welding, and main shaft cylinder 16 is with power transmission shaft 9 in D
Place is provided with cylinder roller bearing 8, and main shaft cylinder 16 is provided with cylinder radial bearing 10 with power transmission shaft 9 at E, in cylinder to mandrel
Hold and mechanical seal 11 and lower mechanical seal 28 are connected with 10 lower section power transmission shaft 9, sealing shroud 17 is arranged on upper mechanical seal
Between 11 and lower mechanical seal 28, sealing shroud 17 is connected with collar bush 16 by limit screw 19, main shaft cylinder 16 and lower flange 21
By being welded to connect, lower flange 21 is connected with blowout preventer by hex bolts 12 and hex nut 13.Tight set 23 and spring groove 25
Gap coordinates, compression spring 24, and hard alloy 26 is embedded in the seam of spring groove 25 to be coordinated with the gap of power transmission shaft 9, holding screw
22 lockings.Hard alloy 26 is embedded in bearing 27 to be coordinated with the gap of power transmission shaft 9.
Operation principle：
Connected between motor 1 and power transmission shaft 9 with spline, the flange of motor 1 is bolted with upper flange 14, lower flange 21
It is connected through a screw thread with blowout preventer H, by tapered threaded connection between power transmission shaft 9 and polished rod I, its effect is to export motor 1
Moment of torsion is transmitted on power transmission shaft 9 and is delivered on polished rod I, and thrust bearing 6 is used to carry axial load, and carrying down-hole pressure is upward
Active force；Taper roll bearing 8 mainly carries footpath, axial connected load, carries underground polished rod I weight；Mechanical seal 11
It is connected with power transmission shaft 9 and is locked with holding screw 22, main shaft cylinder 16 is stopped dynamic with limit screw 19 after is interference fitted with sealing shroud 17
Make, spring 24 is used for adjust automatically sealed friction surface, plays better seal effect, and rubbing surface uses hard alloy spin friction
Sealing.Summary explanation, it can be seen that the application screw rod pump drive assembly is the transmission of motor 1 and the split of mechanical seal part
Design.The contact surface of upper and lower hard alloy is sealing surface 29.
Claims (5)
1. a kind of screw rod pump drive assembly, it includes：Motor, screw pump, it is characterized in that：The output end of motor and the biography of screw pump
Moving axis is linked together by spline, in the hole at the output end insertion gland center of motor, between gland and the output end of motor
It is provided with oil sealing；Gland cooperates and is fixed in the centre bore of upper flange with upper flange, and upper flange is reversely fixed on motor
On shell；Main shaft cylinder upper end welds together with upper flange, and thrust bearing is provided between the upper end shoulder and gland of power transmission shaft；
Below thrust bearing, cylinder roller bearing is provided between power transmission shaft and main shaft cylinder；Below cylinder roller bearing, power transmission shaft
Cylinder radial bearing is provided with multi-diameter shaft between main shaft cylinder, is set on the take-off lever of the power transmission shaft below cylinder radial bearing
Mechanical seal and lower mechanical seal are equipped with, sealing shroud is provided between upper and lower mechanical seal, sealing shroud uses limit screw
It is fixed on main shaft cylinder, main shaft cylinder lower end welds together with lower flange, and lower flange is fixed together with blowout preventer；On described,
Lower mechanical seal is by holding screw, tight set, spring, spring groove, hard alloy blocks and bearing composition；Holding screw is consolidated through tight set
It is scheduled on the take-off lever of power transmission shaft；Tight set coordinates with spring groove gap, and spring is arranged in the notch on spring groove top, spring groove
Hard alloy blocks, the take-off lever gap cooperation of hard alloy blocks and power transmission shaft are provided between bottom and bearing.
2. a kind of screw rod pump drive assembly according to claim 1, it is characterized in that：The gland is boss-shaped, and its is transversal
Face carries I-shaped ladder cavity.
3. a kind of screw rod pump drive assembly according to claim 1, it is characterized in that：Gland is provided with upper flange joint
Sealing gasket.
4. according to claim 1 a kind of screw rod pump drive assembly, it is characterized in that：Be provided with the spring groove and bearing with
The seam that hard alloy is engaged.
5. according to claim 1 a kind of screw rod pump drive assembly, it is characterized in that：The hard alloy is divided into upper and lower hard
Alloy, upper hard alloy are arranged on spring groove bottom, and lower hard alloy is arranged on holder top, the contact surface of upper and lower hard alloy
For sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302913.8A CN105889062B (en) | 2016-05-10 | 2016-05-10 | Screw rod pump drive assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302913.8A CN105889062B (en) | 2016-05-10 | 2016-05-10 | Screw rod pump drive assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105889062A CN105889062A (en) | 2016-08-24 |
| CN105889062B true CN105889062B (en) | 2017-12-29 |
Family
ID=56703474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610302913.8A Active CN105889062B (en) | 2016-05-10 | 2016-05-10 | Screw rod pump drive assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889062B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZW1993A1 (en) * | 1992-02-17 | 1993-06-02 | Fluid Holdings Ltd | Starting positie displacement pump |
| CN2837555Y (en) * | 2005-11-10 | 2006-11-15 | 阜新市石油工具厂 | Surface driving device for screw pump |
| CN201031792Y (en) * | 2007-04-25 | 2008-03-05 | 王鹏翔 | Improved down-hole screw pump ground driving head |
| CN202082101U (en) * | 2011-05-10 | 2011-12-21 | 天津市科麟机电设备有限公司 | Lower sealing device directly driven by screw pump |
| CN202065159U (en) * | 2011-06-07 | 2011-12-07 | 杨爽 | Underlying sealing directly driven power head |
-
2016
- 2016-05-10 CN CN201610302913.8A patent/CN105889062B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105889062A (en) | 2016-08-24 |
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