CN202914304U - Novel single-screw oil extracting pump - Google Patents
Novel single-screw oil extracting pump Download PDFInfo
- Publication number
- CN202914304U CN202914304U CN 201220651126 CN201220651126U CN202914304U CN 202914304 U CN202914304 U CN 202914304U CN 201220651126 CN201220651126 CN 201220651126 CN 201220651126 U CN201220651126 U CN 201220651126U CN 202914304 U CN202914304 U CN 202914304U
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- rotor
- stator
- new type
- oil extraction
- screw oil
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
A novel single-screw oil extracting pump comprises a rotor and a stator, wherein the rotor takes the shape of three-end revolved threads, the stator adopts a four-head cavity structure, the outer contour of the rotor is matched with the inner profile of the cavity of the stator, and the rotor is embedded into the cavity of the stator. The shape of the external surface of the rotor is a curved surface formed by the screwing-in of a curve, equally spaced with an epiphyseal line, around an axial line. The inner diameter cavity surface of the stator is matched with the external surface of the rotor. The rotor and the stator are in interference fit. In the utility model, the eccentricity of the 3: 4 screw pump is smaller than that of rotary screw pumps with molded line ratio of 1: 2 and 2: 3; the lifting efficiency of the screw pump is higher than that of the screw pumps with molded line ratio of 1: 2 and 2: 3; and the eccentricity of the rotor is reduced, the unevenness of the rubber thickness of the stator is reduced, the speed of sliding between the rotor and the stator is lowered, the period of pump check caused by rod tube abrasion and rotor and stator abrasion can be prolonged, and under the same condition, a comparison show that the period of pump check is prolonged for 200 days, and the work cost is lowered.
Description
Technical field
The utility model relates to the lifting equipment technical field of oil extraction in oil field, especially relates to a kind of new type single screw oil extraction pump.
Background technique
Screw pump is as a kind of mechanical oil recovery equip ment, has the irreplaceable superiority of other pumping units at viscous crude, the aspects such as exploitation that contain sand, high-gas-contained well, and have that volume is little, easy for installation, key character that low energy consumption etc. is easy to promote.At present, what mainly used at the scene is 1: 2 molded line list screw rod oil extraction pump, and 2: 3 molded line helical rotor pumps are used in pilot test in some oil field.The motion ratio of their rotor and stator liner pair (ratio of rotor and lining spiral upper thread number is 1: 2 or 2: 3).But theoretical calculation and test research proves that all employing motion ratio is 3: 4 helical rotor pump, will obviously improve the technical-economic index of helical rotor pump, and enlarges its application area.
The model utility content
The purpose of this utility model is to design a kind of novel new type single screw oil extraction pump, addresses the above problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of new type single screw oil extraction pump, comprise rotor and stator, described rotor is three and revolves string of a musical instrument profile that described stator is the four-head cavity structure, the interior match profiles of the die cavity of described rotor external frame and described stator is closed, and described rotor is embedded in the die cavity of described stator.
Described rotor is metal material, and surface abrasion resistance coating, described stator outer wall are ￠ 88.9x6.5 steel pipe, uses binder adhesive rubber material in the outer wall pipe of described stator.
Being shaped as by the curved surface that forms around the axis precession with the equidistant curve of bone line of the external surface of described rotor.
The internal diameter cavity surface of described stator matches with the external surface of described rotor.
Adopt interference fit between described rotor and the described stator.
Magnitude of interference between described rotor and the described stator, the rotating speed of based on crude lift height and described new type single screw oil extraction pump, setting forms.
The beneficial effects of the utility model can be summarized as follows:
1, the throw of eccentric of 3: 4 of the present utility model screw pumps is less than the screw pump of 1: 2 and 2: 3 molded line ratios;
2, the raising efficiency of the utility model screw pump was higher than 1: 2 and the screw pump of 2: 3 molded line ratios;
3, the utility model has reduced eccentricity of rotor, has reduced the stator rubber thickness offset, has reduced Sliding velocity between rotor, has prolonged because rod tube wearing and tearing and rotor wear and tear to examine the cycle of pump, contrasts with in the situation, pump detection period has prolonged 200 days, has reduced operating cost.Can satisfy preferably oil recovery well lifting needs.
Description of drawings
Fig. 1 is the schematic representation of the utility model rotor helical-screw Surface forming.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the structural representation that the utility model rotor master looks.
Fig. 4 is the structural representation of the side cross-section shape of the utility model rotor.
Fig. 5 is the cross section structure schematic representation that the stator master looks in the utility model.
Fig. 6 is the structural representation of the side cross-section shape of stator in the utility model.
Wherein, 1 rotor, 2 stators, 3 bone lines, 4 equal space lines, 5 center lines, 6 pendulum spin lines.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Such as Fig. 1 to a kind of new type single screw oil extraction pump shown in Figure 6, comprise rotor and stator, described rotor is three and revolves string of a musical instrument profile, described stator is the four-head cavity structure, the interior match profiles of the die cavity of described rotor external frame and described stator is closed, and described rotor is embedded in the die cavity of described stator.Described rotor is metal material, and surface abrasion resistance coating, described stator outer wall are ￠ 88.9x6.5 steel pipe, uses binder adhesive rubber material in the outer wall pipe of described stator.Being shaped as by the curved surface that forms around the axis precession with the equidistant curve of bone line of the external surface of described rotor.The internal diameter cavity surface of described stator matches with the external surface of described rotor.Adopt interference fit between described rotor and the described stator, the magnitude of interference between described rotor and the described stator, the rotating speed of based on crude lift height and described new type single screw oil extraction pump, setting forms.
Screw pump of the prior art is in the oil field development application process, and bar is disconnected, pipe leaks has become the principal element that affects the screw bolt well pump detection period because the existence of throw of eccentric causes.In order to reduce screw bolt well rod and tube partial-wear inspection pump sump number, reduce Sliding velocity between rotor, reduce the stator rubber thickness offset, prolong the screw bolt well pump detection period, developed 3: 4 molded line helical rotor pumps.
(1) by the indoor material contrast, optimizes the stator rubber material that is fit to 3: 4 molded line helical rotor pumps, and determine reasonable stator rubber compounding.
The processing of (2) 3: 4 molded line Stator of Single Progressive Cavity Pump core rods adopts shape of cross section to carry out virtual modeling, determines the shape of stator helix, according to the physical property of selected rubber, determines the offset of core rod molded line.After determining correct profile coordinate and offset, according to offset design and processing core rod.
(3) determine internal diameter size and the wall thickness of stator processing tubing, and strict regulations injecting glue and thin metallization processes; Rotor processing technique adopts the continuous punching method, according to the highest mechanical efficiency point value of standard detection; Determine reasonable interference value according to the characteristic of initial torque value and selected rubber material.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. a new type single screw oil extraction pump comprises rotor and stator, it is characterized in that, described rotor is three and revolves string of a musical instrument profile, described stator is the four-head cavity structure, and the interior match profiles of the die cavity of described rotor external frame and described stator is closed, and described rotor is embedded in the die cavity of described stator.
2. new type single screw oil extraction pump according to claim 1, it is characterized in that: described rotor is metal material, surface abrasion resistance coating, described stator outer wall are ￠ 88.9x6.5 steel pipe, in the outer wall pipe of described stator with binder adhesive rubber material.
3. new type single screw oil extraction pump according to claim 1 is characterized in that: being shaped as by the curved surface that forms around the axis precession with the equidistant curve of bone line of the external surface of described rotor.
4. the new type single screw oil extraction pump of stating according to claim 1 is characterized in that: the internal diameter cavity surface of described stator matches with the external surface of described rotor.
5. the new type single screw oil extraction pump of stating according to claim 1 is characterized in that: adopt interference fit between described rotor and the described stator.
6. the new type single screw oil extraction pump of stating according to claim 5 is characterized in that: the magnitude of interference between described rotor and the described stator, and the rotating speed of based on crude lift height and described new type single screw oil extraction pump, setting forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651126 CN202914304U (en) | 2012-11-30 | 2012-11-30 | Novel single-screw oil extracting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651126 CN202914304U (en) | 2012-11-30 | 2012-11-30 | Novel single-screw oil extracting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914304U true CN202914304U (en) | 2013-05-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220651126 Expired - Fee Related CN202914304U (en) | 2012-11-30 | 2012-11-30 | Novel single-screw oil extracting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914304U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013465A (en) * | 2017-06-16 | 2017-08-04 | 珠海格力电器股份有限公司 | Helical-lobe compressor |
| CN109538112A (en) * | 2019-01-04 | 2019-03-29 | 中国地质大学（北京） | It is a kind of to be set with spliced all-metal screw stator and its processing method |
| 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 |
-
2012
- 2012-11-30 CN CN 201220651126 patent/CN202914304U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013465A (en) * | 2017-06-16 | 2017-08-04 | 珠海格力电器股份有限公司 | Helical-lobe compressor |
| CN109538112A (en) * | 2019-01-04 | 2019-03-29 | 中国地质大学（北京） | It is a kind of to be set with spliced all-metal screw stator and its processing method |
| CN109538112B (en) * | 2019-01-04 | 2023-09-08 | 中国地质大学（北京） | Processing method of sleeved spliced all-metal screw stator |
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20191130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |