CN100526647C - Method for machining screw pump stator with equal wall thickness - Google Patents
Method for machining screw pump stator with equal wall thickness Download PDFInfo
- Publication number
- CN100526647C CN100526647C CNB2003101076620A CN200310107662A CN100526647C CN 100526647 C CN100526647 C CN 100526647C CN B2003101076620 A CNB2003101076620 A CN B2003101076620A CN 200310107662 A CN200310107662 A CN 200310107662A CN 100526647 C CN100526647 C CN 100526647C
- Authority
- CN
- China
- Prior art keywords
- stator
- pump barrel
- injecting glue
- wall thickness
- core
- 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 - Lifetime
Links
- 238000003754 machining Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title claims description 16
- 238000005266 casting Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 21
- 238000001125 extrusion Methods 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 12
- 238000003672 processing method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005495 investment casting Methods 0.000 claims description 4
- 244000035744 Hura crepitans Species 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 241001661918 Bartonia Species 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Images
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
- 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
- F04C2/1071—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 the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—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 the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
A technology for machining the stator of the screw-stem pump with same wall thickness for mechanically recovering petroleum includes such steps as shaping the stator (pump barrel) by precise casting or mechanical machining, filling rubber, and conventional post-treating. Its advantages are thin and uniform rubber layer, high performance and size precision, and long service life.
Description
Technical field:
The present invention relates to the mechanical oil recovery technical field, belong to the processing method of screw pump stator.
Background technique:
At present, the processing method of known screw pump casts in rubber in the steel pipe and forms, and the internal surface of lining is the double helix curved surface, rubber layer lining became uneven.When this screw pump stator is worked, cause the stator premature failure easily, shortened the working life of screw bolt well.
Summary of the invention:
The invention provides and to make the screw pump stator with equal wall thickness rubber layer thin and evenly, and can improve the service behaviour of screw pump effectively, further improve the processing method of the screw pump stator with equal wall thickness of screw pump operating life.
The method applied in the present invention has two kinds:
A kind of screw pump stator with equal wall thickness processing method be to adopt the precision casting technology processing stator pump barrel can satisfy stator pumps cylinder size precision and mechanical property, the stator pump barrel after the casting forms complete stator product through injecting glue again.Another kind of screw pump stator with equal wall thickness processing method be to adopt mechanical-moulded processes stator pump barrel, the stator outward appearance is the double helix geometrical shape, again the stator pump barrel is carried out injecting glue and forms complete stator product.Two kinds of processing methods all will be through carrying out could forming complete stator product behind the injecting glue to the stator pump barrel, and two kinds of processing methods are by changing the shape of stator steel body, all can make the stator rubber layer thin and even, and overcome the deficiency of existing conventional screw pump stator technology, can improve the service behaviour of screw pump effectively.
First method is the precision casting technology method, is made up of following steps:
A, manufacturing core
At first in the sectionally assembled master pattern of lathe in machining moulding, make core, lay arbor within it, adopt resin sand to make core, outside core, brush zirconium English powder quick drying paint after the moulding.
B, manufacturing casting mold
Employing is to the case sub-module design, longitudinal profile with the stator pump barrel is a mold joint, semicolumn model with the outside dimension that satisfies the stator pump barrel produces upper mold and lower mold in sandbox, the arbor of core is connected with positioning device, offer two rising heads and sprue gate in upper mold, cast is prepared in mould assembling.
C, carry out cast at the sprue gate, pouring temperature is controlled at 1440-1460 ℃, forms the stator pump barrel, and quenching with Subsequent tempering is carried out to the stator pump barrel in the casting back, guarantees that hardness is at HB 180-240.
Stator pump barrel after d, the casting is again through injecting glue, and the injecting glue temperature is controlled at 90-110 ℃, forms complete stator product behind the injecting glue.
Second method is mechanical-moulded technological method, is made up of following steps:
A ', mfg. moulding die
At first process the extrusion molding dies of screw pump stator with equal wall thickness pump barrel.
Modified and the finishing of b ', hollow tube
Want before the processing earlier hollow tube to be carried out modified, alignment, modified between HB180-200, then the stator pump barrel is carried out cylindrical roughing.
C ', the compacting of stator pump barrel
Under the propelling movement of extrusion press, hollow tube passes through extrusion molding dies gradually, and the directly formation moulding stator pumps tube of back that comes out is suppressed for the first time and used roughcast, forms general shape, suppresses for the second time again and uses smart mould, revises the boundary dimension of stator pump barrel.
After d ', the extrusion modling stator pump barrel is carried out injecting glue, the injecting glue temperature is controlled at 90-110 ℃, forms complete stator product behind the injecting glue.
Compared with the prior art the present invention has following beneficial effect:
1, rubber layer is thin and even, and the heat dispersion in the time of can improving screw pump work can not produce the heat accumulation effect.And temperature is to influence one of stator rubber sensible factor in working life, the heat ageing that same wall-thickness stator can slow down rubber because of its good performance of heat dissipation, the working life of further improving screw pump.
2, the ability of rubber layer resistance to deformation in movement process of thin and uniform wall thickness is good, thereby single-stage pressure-bearing height; Can reduce the magnitude of interference between pump stage number and rotor under identical lifting lift condition, aspects such as its running moment of torsion and system effectiveness are better than the conventional screw pump, can improve the service behaviour of pump.
3, same wall-thickness stator screw pump swell rubber, temperature expand evenly, can guarantee the molded lines of pump preferably, that is to say that the sealability of pump improves, make screw pump have better mechanical property in the running, help keeping for a long time high pump efficiency, prolong the life cycle of pump.
Description of drawings:
Fig. 1 is a coremaking model schematic representation of the present invention;
Fig. 2 is the core schematic representation of belt carcass bone of the present invention;
Fig. 3 pours into a mould the mould assembling schematic representation for the present invention;
Fig. 4 is a stator pump barrel extrusion molding dies of the present invention;
Fig. 5 is a stator pump barrel extrusion modling processing schematic representation of the present invention.
Embodiment:
Below provide embodiments of the invention:
During first kind of segmentation precision casting technology method of on-the-spot use:
A, manufacturing core
At first use the sectionally assembled master pattern 10 of lathe in machining moulding, adopt resin sand in master pattern 10, to make core 5, and in core 5, lay arbor 9, after the moulding, brush zirconium English powder quick drying paint outside core 5 makes the stator pump barrel 3 spiral hole internal surfaces after the casting not have scab.
B, manufacturing casting mold
Employing is to the case sub-module design, longitudinal profile with stator pump barrel 3 is a mold joint, semicolumn model with the outside dimension that satisfies stator pump barrel 3 produces upper mold 1 and lower mold 8 in sandbox 7, the arbor 9 of core 5 is connected with positioning device 6, offer two rising heads 2 and sprue gate 4 in upper mold 1, cast is prepared in mould assembling.
C, 4 implementation cast at the sprue gate, pouring temperature is controlled at 1450 ± 10 ℃, forms stator pump barrel 3, and quenching with Subsequent tempering is carried out to stator pump barrel 3 in the casting back, and assurance hardness is in HB210 ± 10.
On-the-spot when using second kind of mechanical-moulded technological method:
A ', mfg. moulding die
At first process the extrusion molding dies 12 of screw pump stator with equal wall thickness pump barrel 11.
Modified and the finishing of b ', hollow tube
Want before the processing earlier hollow tube 13 to be carried out modified, alignment, the modified hardness that makes is HB210 ± 10, then stator pump barrel 11 is carried out cylindrical roughing, guarantees that roughness of excircle is below 6.3.
C ', the compacting of stator pump barrel
Under the propelling movement of extrusion press 14, hollow tube 13 passes through extrusion molding dies 12 gradually, and the directly formation moulding stator pumps tube 11 of back that comes out is suppressed for the first time and used roughcast, forms general shape, suppresses for the second time again and uses smart mould, revises the boundary dimension of stator pump barrel 11.
After d ', the extrusion modling stator pump barrel 11 is carried out injecting glue, the injecting glue temperature is controlled at 100 ± 10 ℃, forms complete stator product behind the injecting glue.
Claims (2)
1, the processing method of screw pump stator with equal wall thickness is characterized in that: the precision casting technology method is made up of following steps:
A, manufacturing core
At first in the sectionally assembled master pattern (10) of lathe in machining moulding, make core (5), lay arbor (9) within it, adopt resin sand to make core (5), outside core (5), brush zirconium English powder quick drying paint after the moulding;
B, manufacturing casting mold
Employing is to the case sub-module design, longitudinal profile with stator pump barrel (3) is a mold joint, semicolumn model with the outside dimension that satisfies stator pump barrel (3) produces upper mold (1) and lower mold (8) in sandbox (7), the arbor (9) of core (5) is connected with positioning device (6), offer two rising heads (2) and sprue gate (4) in upper mold (1), cast is prepared in mould assembling;
C, (4) implementation cast at the sprue gate, pouring temperature is controlled at 1440-1460 ℃, forms stator pump barrel (3), and quenching with Subsequent tempering is carried out to stator pump barrel (3) in the casting back, and assurance hardness is at HB180-240;
Stator pump barrel (3) after d, the casting is again through injecting glue, and the injecting glue temperature is controlled at 90-110 ℃, forms complete stator product behind the injecting glue.
2, the processing method of screw pump stator with equal wall thickness is characterized in that: mechanical-moulded technological method is made up of following steps:
A ', mfg. moulding die
At first process the extrusion molding dies (12) of screw pump stator with equal wall thickness pump barrel (11);
Modified and the finishing of b ', hollow tube
Want before the processing earlier hollow tube (13) to be carried out modified, alignment, modified between HB180-200, then stator pump barrel (11) is carried out cylindrical roughing;
C ', the compacting of stator pump barrel
Under the propelling movement of extrusion press (14), hollow tube (13) is gradually by extrusion molding dies (12), and the back of coming out directly forms moulding stator pumps tube (11), suppress for the first time and use roughcast, form general shape, suppress again for the second time and use smart mould, revise the boundary dimension of stator pump barrel (11);
After d ', the extrusion modling stator pump barrel (11) is carried out injecting glue, the injecting glue temperature is controlled at 90-110 ℃, forms complete stator product behind the injecting glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101076620A CN100526647C (en) | 2003-11-04 | 2003-11-04 | Method for machining screw pump stator with equal wall thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101076620A CN100526647C (en) | 2003-11-04 | 2003-11-04 | Method for machining screw pump stator with equal wall thickness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1614238A CN1614238A (en) | 2005-05-11 |
| CN100526647C true CN100526647C (en) | 2009-08-12 |
Family
ID=34758326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101076620A Expired - Lifetime CN100526647C (en) | 2003-11-04 | 2003-11-04 | Method for machining screw pump stator with equal wall thickness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100526647C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332501B (en) * | 2008-07-25 | 2010-06-02 | 泰州市永昌冶金设备有限公司 | Vacuum negative-pressure loss mould casting technique |
| CN101865129B (en) * | 2010-05-19 | 2012-05-23 | 锦州鹏宇泵业有限公司 | Processing method of screw pump stator with equal wall thickness and special push-pull device |
| CN101900112A (en) * | 2010-08-03 | 2010-12-01 | 于瀚翔 | Rolling method of equal-wall-thickness multiple-threaded screw pump stator |
| CN102357981A (en) * | 2011-11-04 | 2012-02-22 | 中国海洋石油总公司 | Processing method of screw pump elastic rotor with equal wall thickness |
| CN106312449A (en) * | 2015-07-10 | 2017-01-11 | 中国石油天然气股份有限公司 | Machining technology for all-metal screw pump low in cost and long in service life |
| CN105171351B (en) * | 2015-09-22 | 2017-12-26 | 黄山众拓工业泵制造有限公司 | The processing technology of oil-gas mixed delivery pump |
| CN108906946B (en) * | 2018-07-24 | 2023-05-30 | 广东斯坦德流体系统有限公司 | Hollow rotor forming equipment |
-
2003
- 2003-11-04 CN CNB2003101076620A patent/CN100526647C/en not_active Expired - Lifetime
Non-Patent Citations (2)
| Title |
|---|
| 等壁厚定子螺杆泵研究及应用前景探讨. 何艳等.石油机械，第31卷第2期. 2003 |
| 等壁厚定子螺杆泵研究及应用前景探讨. 何艳等.石油机械，第31卷第2期. 2003 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1614238A (en) | 2005-05-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200930 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: PetroChina Company Limited Patentee after: Daqing Oilfield Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District Daqing Oil Field Co Patentee before: Daqing Oilfield Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |
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| CX01 | Expiry of patent term |