CN201650730U - Double equal-wall-thickness screw - Google Patents
Double equal-wall-thickness screw Download PDFInfo
- Publication number
- CN201650730U CN201650730U CN2010201687475U CN201020168747U CN201650730U CN 201650730 U CN201650730 U CN 201650730U CN 2010201687475 U CN2010201687475 U CN 2010201687475U CN 201020168747 U CN201020168747 U CN 201020168747U CN 201650730 U CN201650730 U CN 201650730U
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- wall
- equal
- thickness
- stator casing
- rubber
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- Expired - Fee Related
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Abstract
The utility model relates to a double equal-wall-thickness screw for screw pumps or screw drill tools for oil production or well drilling in petroleum industry, which is capable of increasing radiation area of a stator casing, increasing radiation capacity of rubber, reducing lagged heat generated by mechanical extrusion and lowering affection of thermal lag. The technical scheme includes that the stator casing is of an equal-wall-thickness structure, a stator outer spiral groove same with an inner hole of the stator casing in spiral direction is arranged on the outside of the stator casing, a rubber lining has equal wall thickness, the rubber is adhered onto the inner wall of the stator casing by means of vulcanization, and a rotor is meshed with the rubber lining to form a sealed cavity. The screw is characterized in that a spirally grooved equal-wall-thickness structure same with the inner hole in spiral direction is arranged on the outside of the stator casing, the spiral groove increases radiation area, the equal-wall-thickness rubber lining is more powerful in deformation resistance and uniform in deformation, and the double equal-wall-thickness screw has the advantages of fine sealing performance, high working efficiency, long service life and easy realization because of low processing precision requirement of the outer spiral groove of the stator casing, and can be used in oil production, well drilling and well repair in petroleum industry.
Description
Technical field
The utility model relates to and a kind ofly is used for that petroleum industry is recovered the oil or the screw pump or the helicoid hydraulic motor of drilling well, particularly relates to the wall thickness screw rods such as two in screw pump or the helicoid hydraulic motor.
Background technique
Screw pump and helicoid hydraulic motor are the most widely used oil recovery at present and drilling and repairing well instrument, and their core component all is screw rods, and screw rod is made up of stator and rotor; Conventional stator case is the metal tube that an inner sulfuration has rubber, and the rubber endoporus is shape in the shape of a spiral, and the formation Seal cage that is meshed with rotor, rotor are the helical metal bars that is processed by alloyed steel; Stator is as one of most critical parts of motor part, and its performance is directly connected to the working life and the complete machine working efficiency of screw pump and screw motor.The situation that the stator metal shell lost efficacy in the practical application is few, and rubber bushing is subjected to the effect of multiple physical fields such as hydrostatic pressure, pressure reduction, drilling well medium swelling, extruding, deform easily, wear and tear, tear and fall piece, have a strong impact on the working life and the working efficiency of instrument.
The operating life of rubber bushing and working efficiency and stator case structure have substantial connection, conventional stator case inner chamber is smooth cylndrical surface, inner chamber need vulcanize the rubber of one deck uneven thickness with the engages and seals of realization with rotor, because the stator case inner chamber is more smooth, the rubber bond area is little, and adhesion strength is easily degenerated; During work, owing to the rubber bushing uneven thickness, the rubber bushing distortion is big, and the each several part swell increment is also inequality, can not well guarantee the sealing of Seal cage, and heat radiation is uneven, and thermal hysteresis is serious, and rubber very easily wears out and tears; The external in recent years same wall-thickness stator lining that proposes, though can improve the rubber bound quality, improve non-deformability and heat dispersion, but because the stator metal shell uneven thickness of rubber bushing outside, rubber bushing heat radiation phenomenon uneven, heat accumulation is still more serious, thereby influence the sealing of Seal cage, cause the working efficiency of screw pump and helicoid hydraulic motor and still can not satisfy the job requirements of drilling well, well workover and oil recovery working life.Therefore, the screw pump and the screw drilling tool motor of research perfect heat-dissipating, good airproof performance, efficient height and long service life have very big necessity and important industrial value.
Summary of the invention
The purpose of this utility model is: for heat diffusion area, the hysteresis heat that improves rubber heat dispersion, the generation of minimizing mechanical presses that increases stator case, the influence that reduces thermal hysteresis, the spy provides a kind of two wall thickness screw rod that waits.
For achieving the above object, the technological scheme that this technical problem that solves the utility model adopts is: a kind of two wall thickness screw rods that wait, form by stator case, rubber bushing and rotor, its structure characteristic is: stator case is for waiting wall thickness structure, and there is the stator external spiral groove identical with its endoporus rotation direction the stator case outside; Rubber bushing is to wait wall thickness, and rubber is bonded in the stator case inwall by sulfuration process; Rotor and rubber bushing engagement form Seal cage.Stator case can make the each several part heat radiation heat dissipation rate even and housing of rubber bushing fast for waiting wall thickness.The stator external spiral groove can increase heat diffusion area, and the spiral chute of stator inner hole can increase the rubber bushing bond area, the Reinforced Rubber adhesion strength.
Two rotors that wait the wall thickness screw rods and stator case specific lobe are a kind of of 1/2,2/3,3/4,4/5,5/6,6/7,7/8,8/9,9/10 or 10/11.
The utility model compared with prior art, the beneficial effect that has is: (1) this screw rod for the stator case outside have with its endoporus rotation direction same-handed groove wait the wall thickness structure, spiral chute has increased heat diffusion area; (2) ability that waits the resistance to deformation of wall thickness rubber bushing of stator case inside is stronger, and distortion evenly; (3) etc. wall thickness rubber bushing thermal hysteresis is lighter, and outside same wall-thickness stator housing can make its heat radiation evenly and improve its heat dissipation rate, and the swelling of rubber expands evenly with temperature, can effectively guarantee the sealing of Seal cage; (4) this pair waited wall thickness screw rod good airproof performance, high working efficiency, power can reach conventional motor one to more than the twice, long service life, stator case external spiral groove requirement on machining accuracy is not high, is easy to realize, can be used for recovering the oil and drilling and repairing well in.
Description of drawings
Fig. 1 is a kind of two 5/6 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Fig. 2 is a kind of two 5/6 screw rod stator case outer surface structure schematic representation that waits the wall thickness screw rod of the utility model.
Fig. 3 is a kind of two 1/2 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Fig. 4 is a kind of two 2/3 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Fig. 5 is a kind of two 3/4 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Fig. 6 is a kind of two 4/5 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Fig. 7 is a kind of two 6/7 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Fig. 8 is a kind of two 7/8 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Fig. 9 is a kind of two 8/9 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Figure 10 is a kind of two 9/10 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Figure 11 is a kind of two 10/11 screw rod sectional view that waits the wall thickness screw rod of the utility model.
Among the figure: 1. stator case, 2. rubber bushing, 3. rotor, 4. stator external spiral groove.
Specific implementation method
As Fig. 1～shown in Figure 11, a kind of two wall thickness screw rods that wait of the utility model are made up of stator case 1, rubber bushing 2 and rotor 3, and described stator case 1 is structure such as wall thickness such as grade, and there is the stator external spiral groove 4 identical with its endoporus rotation direction stator case 1 outside; Rubber bushing 2 is for waiting wall thickness, and rubber is bonded in the stator case inwall by sulfuration process; Rotor 3 forms Seal cage with rubber bushing 2 engagements.
There is the stator external spiral groove 4 identical with its endoporus rotation direction stator case 1 outside of this screw rod, and the spiral chute in stator external spiral groove 4 and the endoporus can increase heat diffusion area, and the endoporus spiral chute can also increase the rubber bond area, the Reinforced Rubber adhesion strength; Ability Deng 2 resistances to deformation of wall thickness rubber bushing is stronger, and distortion evenly; Little Deng wall thickness rubber bushing 2 thermal hysteresiss influences, and its can Homogeneouslly-radiating by same wall-thickness stator housing 1 and heat dissipation rate fast, it is even that the swelling of rubber bushing 2 and temperature expand, and can effectively guarantee the sealing of Seal cage, increases work efficiency.
Claims (2)
1. two wall thickness screw rod that waits is made up of stator case (1), rubber bushing (2) and rotor (3), and it is characterized in that: stator case (1) is for waiting wall thickness structure, and there is the stator external spiral groove (4) identical with its endoporus rotation direction stator case (1) outside; Rubber bushing (2) is to wait wall thickness, and rubber bound is at stator case (1) inwall; Rotor (3) forms Seal cage with rubber bushing (2) engagement.
2. two wall thickness screw rod that waits according to claim 1 is characterized in that: the rotor (3) that this pair waited the wall thickness screw rod and the specific lobe of stator case (1) are a kind of in 1/2,2/3,3/4,4/5,5/6,6/7,7/8,8/9,9/10 or 10/11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201687475U CN201650730U (en) | 2010-04-13 | 2010-04-13 | Double equal-wall-thickness screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201687475U CN201650730U (en) | 2010-04-13 | 2010-04-13 | Double equal-wall-thickness screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650730U true CN201650730U (en) | 2010-11-24 |
Family
ID=43115963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201687475U Expired - Fee Related CN201650730U (en) | 2010-04-13 | 2010-04-13 | Double equal-wall-thickness screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650730U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062087A (en) * | 2010-12-29 | 2011-05-18 | 陈思 | Double-screw pump provided with elastic lining layer |
| CN102629796A (en) * | 2012-03-26 | 2012-08-08 | 西南石油大学 | Pipe fitting inner high-pressure forming equal-wall thickness screw motor and processing process thereof |
| CN106014199A (en) * | 2016-05-18 | 2016-10-12 | 燕山大学 | Sectional type uniform-wall-thickness screw drilling tool stator |
| CN108050058A (en) * | 2017-12-06 | 2018-05-18 | 中石化石油机械股份有限公司研究院 | Oil-extracting screw pump |
| CN113202688A (en) * | 2021-05-25 | 2021-08-03 | 中石化江钻石油机械有限公司 | Screw motor and underground power drilling tool with prolonged service life |
-
2010
- 2010-04-13 CN CN2010201687475U patent/CN201650730U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062087A (en) * | 2010-12-29 | 2011-05-18 | 陈思 | Double-screw pump provided with elastic lining layer |
| CN102629796A (en) * | 2012-03-26 | 2012-08-08 | 西南石油大学 | Pipe fitting inner high-pressure forming equal-wall thickness screw motor and processing process thereof |
| CN106014199A (en) * | 2016-05-18 | 2016-10-12 | 燕山大学 | Sectional type uniform-wall-thickness screw drilling tool stator |
| CN108050058A (en) * | 2017-12-06 | 2018-05-18 | 中石化石油机械股份有限公司研究院 | Oil-extracting screw pump |
| CN113202688A (en) * | 2021-05-25 | 2021-08-03 | 中石化江钻石油机械有限公司 | Screw motor and underground power drilling tool with prolonged service life |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20140413 |