CN1421613A - Screw pump made of polymer material and ceramic and its manufacture - Google Patents
Screw pump made of polymer material and ceramic and its manufacture Download PDFInfo
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- CN1421613A CN1421613A CN 02158850 CN02158850A CN1421613A CN 1421613 A CN1421613 A CN 1421613A CN 02158850 CN02158850 CN 02158850 CN 02158850 A CN02158850 A CN 02158850A CN 1421613 A CN1421613 A CN 1421613A
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Abstract
The present invention is screw pump made of polymer material and ceramic and its manufacture. The stator lining is made of metal, polymer material or non-elastic ceramic material; and the rotor surface is made of metal, polymer material or elastic material. The stator is made through injection forming polymer lining short pieces, painting adhesive and installing the short pieces inside the casing or through arranging sintered ceramic lining short pieces inside hot casing and contracting the casing. The rotor making process includes milling rotor blank, deoiling, painting adhesive and heating, painting molten elastic material and sulfurization. The screw pump of the present invention is used in oil extraction as well as other industrial fields.
Description
Technical field: the present invention relates to a kind of screw pump of lifting fluid, relate in particular to a kind of screw pump that is used for oil mining, the invention still further relates to the manufacture method of this screw pump with inelastic body manufacturings such as polymeric material and potteries.
Background technique: the screw pump of present industrial usefulness mainly is made up of rubber-bushed helical stator and steel helical rotor, because the spiral head number of rotor always lacks one than the spiral head number of stator liner, this just forms many airtight chamber between rotor, the potted line that these chambers just can form along stator and rotor when rotor rotates in stator is progressively progressive on axially, thereby realizes the conveying of fluid.Screw pump is used for the existing nearly 30 years history of petroleum production as a kind of hydraulic machinery, because its adaptability to viscous fluid is good, the screw pump oil production well number increased year by year in recent years.Screw pump is used for oil mining as oil recovery machiner generally can constitute two kinds of oil production methods.The one, rod-type drive screw pump, its principle is the drive unit that is positioned on the well head production tree, by sucker rod rotation torque is passed to subsurface progressive cavity, screw pump rotation is lifted to well head with well liquid from the down-hole then, the application of rod-type drive screw pump be well depth at 1000 meters with interior straight well.Second kind is electric oil submerged screw pump, its principle is to give the down-hole oil-submersible motor by the power cable that extends to the down-hole from well head with power delivery, downhole electrical motor drives the subsurface progressive cavity running, thereby well liquid is lifted to well head, and electric oil submerged screw pump is mainly used in the oil mining on inclined shaft, horizontal well, deep-well and the ocean platform.Because existing screw pump stator lining is made by rubber, it is used in following shortcoming and defect is arranged on the oil well: the one, the rubber bushing abrasion resistance is poor, especially for containing the sand oil well, liner wear is serious, liner wear will carry out construction operation and change pump, and oil well also need stop production during the construction operation after losing efficacy, therefore, change pump at every turn all will pay at least several ten thousand tens0000 costs at most.The problem of wear-resisting property difference has restricted its running speed simultaneously, generally can only below 300RPM, move, otherwise can't ensure its working life, rotating speed does not increase, the manufacture cost of pump own is increased, and in the down-hole that reducing gear is set is also very difficult for it, this has seriously limited its application area.Second deficiency is that existing screw pump can't be used for deep-well and high-temperature oil well, more can't adapt to the thermal recovery oil well of steam injection owing to be subjected to the restriction (being not more than 100 ℃) of stator liner rubber heat resistance.The 3rd deficiency is lining rubber easy ageing failure under the oil well hydrocarbon corrodes, and be no more than 500 days its working life.Startup that the 4th deficiency is this pump and operation moment of torsion are big, this is that poor heat stability causes because the surperficial friction ractor of rubber bushing is big, and initial torque is big, the problem that starts difficulty has seriously limited uses it for the making electric oil submerged screw pump, has therefore lost a bulk of market share.The 5th deficiency is that the single-stage pressure head of existing screw pump is low, this is because the non-uniform thickness on the cross section of rubber bushing causes, different its compress variations of the thickness of rubber are also different, therefore under the effect of pump stage two ends pressure reduction, will produce leakage, the problem that the single-stage pressure head is low has limited makes high-lift screw pump, otherwise can only be cost to sacrifice efficient significantly.The 6th deficiency is the poor dimensional stability of rubber bushing, it is under different downhole temperatures, size can differ from half millimeter more than, this has just caused same pump its hydraulic characteristic (pressure head, discharge capacity) under varying environment just unknowable without analog detection, and this has brought very big extra workload for manufacturer and user.The 7th deficiency is that this pump can only disposablely use in the down-hole, because the needs on the oil production technology, sometimes require screw pump to trip out to ground after running a period of time in the down-hole, and in a single day existing screw pump trips out ground, hydrocarbon in rubber bushing is invaded in the down-hole just can discharge fast, make rubber covering generation swelling and the use of can't going into the well once more, this brings very big waste and inconvenience to the user.Existing screw pump also has a deficiency to be, its rubber bushing must be made by large-scale adhesive casting machine and vulcanization plant, because casting glue laminated power, variation of temperature, can't be consistent on the rubber bushing size of making, and both non-interchangeabilities, this is that the user does not welcome.
Summary of the invention: the objective of the invention is to: provide a kind of screw pump made from polymeric material and/or pottery to overcome all deficiencies of above-mentioned prior art, it had both possessed good wear resistance, can ensure again in the medium-term and long-term running of the high temperature well of inclement condition.It possesses also that moment of torsion is little, single-stage pressure head height, dimensional stability are good, can be repeatedly used and interchangeable performance, and can turn round under high speed reliably.Another object of the present invention provides the screw pump that a kind of polymeric material and/or pottery are made, and makes it not only can be used for oil mining but also can be used for ground other industrial field.Purpose of the present invention also will provide the method for making this screw pump.
For realizing above-mentioned goal of the invention, the screw pump that polymeric material and/or pottery are made comprises: flexible drive shaft, rotor, stator, stator comprise stator liner and stator case.The present invention improves the material of making stator liner, both changed in the prior art and all the time elastomers such as rubber had been made stator liner, with the way of metal as rotor outer surface, the stator liner of screw pump all is stiff among the present invention, the outer surface of rotor was both stiff, and was also flexible.The material of making stator liner is polymeric material, pottery or metal; The material of making rotor surface is polymeric material, metal or elastomer.Polymeric material described here is meant the high-performance special engineering plastics, and these type of engineering plastics have the excellent comprehensive performance, and except that good mechanical property, it also has the heat distortion temperature height, and long-term serviceability temperature can reach more than 200 ℃; Outstanding chemically-resistant and hydrolysis property; Fabulous dimensional stability; Superior abrasion performance and self lubricity.The high performance engineering plastics that is fit to the oil well condition is answered first-selected PAEK (PAEK) class material, this type of material comprises: now industrial polyether-ether-ketone (PEEK), polyether-ketone (PEK), polyetherketoneetherketoneketone (PEKEKK), PEKK (PEKK), and polyether ether ketone ketone (PEEKK), polyethers biphenyl ether ketone (PEDEK), polyethers biphenyl ether ketone ketone and the assorted naphthalene biphenyl polyether ketone (PPEK) etc. of research and development recently; Polyphenylene sulfide (PPS) also is particularly suitable as the material of making screw pump and is used for oil well, and it also has fabulous price performance except that possessing aforesaid superior function; Polyether sulfone also is a good material of manufacturing subsurface progressive cavity, and this type of material comprises: polyether sulfone (PES), assorted naphthalene biphenyl polyether sulfone (PPES), assorted naphthalene biphenyl polyether sulfone ketone (PPESK), polyethersulfone ketone ketone and contain heterocycle polyether sulfone ether ketone ketone.The high performance engineering plastics that is fit to do the subsurface progressive cavity material also has polybenzoate (PHB) etc.The composite material that above-mentioned polymeric material forms after with fiber reinforcement demonstrates higher intensity, heat resistance and wear resistance performance, and the fiber that is used to strengthen modification can be: carbon fiber, glass fibre, ceramic fiber, steel fiber, boron fiber and synthetic fiber etc.With above-mentioned polymeric material is that matrix suitably adds graphite, molybdenum disulfide, teflon etc. and can further improve its friction and wear performance; The combination property of the blending and modifying of above-mentioned polymeric material and other material and chemical modifying homologous compound (also claiming alloy) also can be greatly improved.Therefore will improve the accommodation and the service behaviour of screw pump significantly with above-mentioned polymeric material making screw pump stator lining and rotor surface.
Except that above-mentioned polymeric material, pottery (as silicon nitride ceramics, silicon carbide porcelain) also is the excellent materials of making the screw pump stator lining, they are high temperature resistant except tool, the high strength, wear-resisting and corrosion resistant premium properties, also have good thermal stability, line account coefficient is little, and friction factor is little, energy selflubricating, the advantage that hardness is high, make stator liner with them, can use in the down-hole and need not maintenance for many years, be particularly suitable for height and contain the sand oil well.To carry out supporting with stator liner and the rotor surface that above-mentioned polymeric material, pottery, metal or elastic material make respectively, can be combined into the screw pump that several have nothing in common with each other, both when stator liner is polymeric material, rotor surface can be a metal, also can be that polymeric material can also be that elastic material is made; When the material of stator liner was pottery, rotor surface can be that polymeric material also can be that elastic material is made; When the material of stator liner was metal, rotor surface was that polymeric material is made.Above-mentioned elastic material is meant nitrile butadiene rubber, butyl rubber and polyurethane.Screw pump of the present invention, when rotor surface adopts non-elastic material to make, stator liner adopts zero to cooperate or Spielpassung with cooperating of rotor surface, and its matching gap is 0-0.3mm, and the size of matching gap will be decided according to the viscosity of pump transporting fluid and the rotating speed of pump.When rotor surface adopted elastic material to make, stator liner was an interference fit with cooperating of rotor surface, and interference is greater than 0.1mm.
In order to produce screw pump of the present invention with above-mentioned polymeric material and porcelain, its manufacture method comprises following several aspect: polymeric material is that manufacturing method for stators, the pottery of lining is the manufacture method of the manufacturing method for stators of lining, polymeric material rotor surface and the manufacture method of elastic material rotor surface.
Polymeric material is that the manufacturing method for stators of lining comprises following several steps, prepare mould earlier, do internal mold with the stator core rod, the garden pipe is made external mold, then according to the molding technological condition of selected polymeric material, as drying temperature and time, melt temperature, die temperature etc. are injected or extruding and moulding, make the stator liner pipe nipple of this kind polymeric material, also this kind polymeric material can be extruded into bar or tubing, be made into the lining pipe nipple by machining then.Each lining pipe nipple appearance coating adhesive that to make again, and molded lines is installed in the stator case in being aligned with each other, with compressing pipe that each lining pipe nipple is locked in stator case at last.
Pottery is the manufacturing method for stators of lining, comprises following several steps: utilize earlier mould with raw material (as the preparation Si
3N
4, use the Si powder) powder with injection or other suitable mode moulding after, reaction in-situ takes place in (as nitrogen) heating in certain atmosphere, synthetic desired material is (as Si
3N
4), and sintering takes place simultaneously make the stator liner pipe nipple, then with stator case as collapsible tube, and to its heating (200-300 ℃), molded lines was installed in the stator case after the heating in each lining pipe nipple that will sinter simultaneously was aligned with each other, and compress with compressing pipe, treat that the cooling of stator housing is shunk after, each lining pipe nipple can be securely fixed in the stator case.
The manufacture method of polymeric material rotor surface can adopt isoionic spray mo(u)lding technology, comprise following several steps, at first will mill good rotor surface and carry out sandblast degreasing pretreatment, then the polymeric material powder is sent in the plasma gun, to rotor surface, form coating with high velocity jet.Coating need not through oversintering again, and coating thickness is unrestricted, and the rotor surface after the spraying is again through polishing treatment.Rotor surface also can adopt dispersion coating molding technology, earlier with the rotor surface pretreatment, is coated with one deck Organic fluoride priming paint then during moulding, behind the drying sintering, just can select suitable polymeric material to carry out the dispersion coating molding.The coating drying condition is 90-100 ℃, 30min, last melt temperature sintering according to selected polymeric material.
Elastic material rotor surface manufacture method comprises following several steps, after will milling good metallic rotator surface ungrease treatment, evenly coat Bond, and rotor is heated to 80-100 ℃, then with the elastic material of fusion, add curing agent and stir by its process conditions, be coated in equably again on the rotor surface after the heating, vulcanize by the sulfurize temperature and the time of this elastic material regulation at last.
The screw pump that adopts above-mentioned polymeric material and pottery to make, because the excellent properties that material itself has the high-temperature resistant grade, can be in the medium-term and long-term use of high-temperature oil well more than 200 ℃, simultaneously because chemical resistance, self lubricity and wear resistance performance that material itself has, make the several times in working life of screw pump increase, and the moment of torsion of pump is little, and the efficient height can long-time running under the high rotating speed of 1500RPM.
Description of drawings:
Fig. 1 is a screw pump structure sectional view of the present invention
Fig. 2 is along Fig. 1 center line A-A cross section view
Fig. 3 is the cross-sectional view of the other structure of screw pump of the present invention
Fig. 4 utilizes the stator liner pipe nipple to implement structural representation of the present invention
Embodiment: the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is a screw pump typical structure schematic representation of the present invention, it comprises that the effect that is connected with flexible drive shaft 5, flexible drive shaft 5 on stator case 4, the stator liner 7 of being with inner helical surface and helical rotor with matching 6, the rotor 6 is to rotate the eccentric rotary that becomes rotor with one heart, when flexible drive shaft 5 drive rotors 6 rotate in stator liner 7, fluid will enter chamber 2 step by step along pump intake 1, fluid after the pressurization enters export pipeline 3 then, discharges ground.Above-mentioned screw pump is done stator liner with polymeric material, pottery or metal; Do rotor surface with polymeric material, metal or elastic material, stator that different materials is made and rotor carry out supportingly again, can be combined into numerous embodiments.
Mode of execution one: see Fig. 2, present embodiment takes stator liner 7 to make for polymeric material, and the surface 8 of rotor 6 is hard chrome or chrome-base ceramic.
Mode of execution two: see Fig. 3, present embodiment takes stator liner 7 to make for polymeric material, and the surface 8 of rotor 6 also is that polymeric material is made.
Mode of execution three: see Fig. 3, present embodiment takes stator liner 7 to make for polymeric material, and the surface 8 of rotor 6 is that elastic material is made.
Mode of execution four: see Fig. 3, present embodiment takes stator liner 7 to make for pottery, and the surface 8 of rotor 6 is that polymeric material is made.
Mode of execution five: see Fig. 3, present embodiment takes stator liner 7 to make for pottery, and the surface 8 of rotor 6 is that elastic material is made.
Mode of execution six: see Fig. 3, present embodiment takes stator liner 7 to make by machining or die casting for metallic material, and the surface 8 of rotor 6 is that polymeric material is made.
The manufacture method of screw pump stator when now the material of stator liner 7 being discussed in conjunction with Fig. 4 is respectively polymeric material and pottery.When situation during for the former, will inject earlier or the polymeric material lining pipe nipple 7 of machining moulding ' outer surface 11 be coated with and be covered with Bond, and with the interior molded lines of each lining pipe nipple 7 ' be aligned with each other.Be installed in the stator case 4, with compressing pipe 9 each lining pipe nipple 7 ' locked managed between 9 with compressing at limited ring 10 again.Lining short circuit 7 ' external diameter than the little 0.02-0.1mm of internal diameter of stator case 4.
When the material of stator liner 7 is pottery, earlier stator case 4 integral body are heated to 200-300 ℃, again reactive sintering is made in the stator case 4 after molded lines in each ceramic chamber lining pipe nipple 7 ' be aligned with each other is installed in heating, and with compressing pipe 9 and limited ring 10 to carry out the end spacing, each lining pipe nipple 7 after stator case 4 coolings are shunk ' just can be securely fixed in the stator case 4, thus complete stator formed.Lining pipe nipple 7 under the normal temperature state ' external diameter than the big 0.02-0.1mm of internal diameter of stator case 4.
Manufacture method about polymeric material rotor surface and elastic material rotor surface has been done concrete narration in summary of the invention, so not in this repetition.
Certainly, make screw pump with polymeric material and also can adopt other method,, integral body is injected or be extruded into to stator liner use as stator as with the stator case cancellation; Also can keep stator case, global formation and bonding are carried out synchronously.Equally, also can take hot-spraying technique to manufacture the rotor surface of polymeric material.Such conversion all drops within protection scope of the present invention.
Claims (12)
1, a kind of screw pump made from polymeric material and pottery, comprise: flexible drive shaft (5), rotor (6), stator, stator is made up of stator liner (7) and stator case (4), it is characterized in that: its stator liner (7) is made by the non-elastic material of polymeric material or pottery or metal, the material of rotor surface (8) can be the non-elastic material of polymeric material or metal, it also can be elastic material, when the material of stator liner (7) is polymeric material, rotor surface (8) can be a metal, also can be polymeric material, can also be that elastic material is made; When the material of stator liner (7) was pottery, rotor surface (8) can be that polymeric material also can be that elastic material is made; When the material of stator liner (7) was metal, rotor surface (8) was that polymeric material is made; This type of polymeric material usable fibers strengthens, also can add graphite, molybdenum disulfide, teflon, when rotor surface (8) is that non-elastic material is when making, stator liner (7) is zero cooperation or Spielpassung with cooperating of rotor surface (8), its matching gap is 0-0.3mm, when rotor surface (8) was the elastic material manufacturing, stator liner (7) was an interference fit with cooperating of rotor surface (8), and magnitude of interference is greater than 0.1mm.
2, according to the described screw pump of claim 1, it is characterized in that: described polymeric material be PAEK (PAEK) class high performance engineering plastics and with the homologous compound of other material blending and modifying and chemical modifying.
3, according to the described screw pump of claim 1, it is characterized in that: described polymeric material be polyphenylene sulfide (PPS) and with the homologous compound of other material blending and modifying and chemical modifying.
4, according to the described screw pump of claim 1, it is characterized in that: described polymeric material be the polyether sulfone high performance engineering plastics and with the homologous compound of other material blending and modifying and chemical modifying.
5, according to the described screw pump of claim 1, it is characterized in that: described polymeric material be polybenzoate (PHB) and with the homologous compound of other material blending and modifying and chemical modifying.
6, according to the described screw pump of claim 1, it is characterized in that: described elastic material is a polyurethane.
7, according to the described screw pump of claim 1, it is characterized in that: described elastic material is a nitrile butadiene rubber.
8, according to the described screw pump of claim 1, it is characterized in that: described elastic material is a butyl rubber.
9, a kind of described polymeric material of claim 1 of making is the manufacturing method for stators of lining, to inject earlier or outer surface (11) coated with adhesive of the polymeric material lining pipe nipple (7 ') of machining moulding, and each lining pipe nipple (7 ') is aligned with each other interior molded lines, be installed in the stator case (4), with compressing pipe (9) that each lining pipe nipple (7 ') is locked at limited ring (10) and compress between the pipe (9) again.
10, a kind of described pottery of claim 1 of making is the manufacturing method for stators of lining, check the outside dimension of lining pipe nipple (7 ') and the internal diameter size of stator case (4) earlier, guarantee under the normal temperature state, the external diameter of lining pipe nipple (7 ') is than the big 0.02-0.1mm of internal diameter of stator case (4), again stator case (4) integral body is heated to 200-300 ℃, in each ceramic chamber lining pipe nipple (7 ') that then reactive sintering is made is aligned with each other molded lines and be installed in heating after stator case (4) in, and with compressing pipe (9) and limited ring (10) to carry out the end spacing.
11, a kind of manufacture method of making the described polymeric material rotor surface of claim 1, at first will mill good rotor surface pretreatment, then the polymeric material powder is sent in the plasma gun, arrive on the rotor surface (8) with high velocity jet, form coating polishing treatment again, the dispersion coating molding is earlier with rotor surface (8) pretreatment, be coated with one deck Organic fluoride priming paint then, behind the drying sintering, polymeric material is carried out dispersion to apply, the coating drying condition is 90-100 ℃, 30 minutes, and last melt temperature sintering according to selected polymeric material.
12, a kind of manufacture method of making the described elastic material rotor surface of claim 1, metallic rotator surface (8) ungrease treatment that to mill earlier, evenly coat Bond again, and rotor is heated to 80-100 ℃, then the elastic material of fusion is added curing agent by its technological requirement and stir, evenly be coated in again on the rotor surface (8) after the heating, vulcanize by the sulfurize temperature and the time of this elastic material regulation at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02158850 CN1421613A (en) | 2002-12-22 | 2002-12-22 | Screw pump made of polymer material and ceramic and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02158850 CN1421613A (en) | 2002-12-22 | 2002-12-22 | Screw pump made of polymer material and ceramic and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1421613A true CN1421613A (en) | 2003-06-04 |
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ID=4753190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02158850 Pending CN1421613A (en) | 2002-12-22 | 2002-12-22 | Screw pump made of polymer material and ceramic and its manufacture |
Country Status (1)
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|---|---|
| CN (1) | CN1421613A (en) |
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| CN101803151A (en) * | 2007-09-21 | 2010-08-11 | 西门子公司 | Separating can and method for producing the same |
| CN101443556B (en) * | 2006-05-11 | 2011-08-03 | 奈赤-单体泵股份有限公司 | Stator casing for eccentric worm pumps |
| CN101352373B (en) * | 2007-07-27 | 2012-12-12 | 精工爱普生株式会社 | Method for manufacturing dental abutment and dental abutment |
| CN101671507B (en) * | 2009-09-29 | 2013-03-13 | 上海海隆赛能新材料有限公司 | Preparation and application of oil well pipe dedicated weather-proof and high temperature, high pressure and high impact resisting external protective material |
| CN104563858A (en) * | 2014-11-28 | 2015-04-29 | 浙江歌瑞新材料有限公司 | Screw drill stator made of PTFE (Polytetrafluoroethylene) and PTFE applied to stator |
| CN104558985A (en) * | 2014-11-28 | 2015-04-29 | 浙江歌瑞新材料有限公司 | Screw drill stator prepared from fluorine-containing material and fluorine-containing material used for stator |
| CN104595182A (en) * | 2014-11-28 | 2015-05-06 | 浙江歌瑞新材料有限公司 | Screw drilling tool stator manufactured by using FEP and modified FEP applied to stator |
| CN104712494A (en) * | 2014-11-28 | 2015-06-17 | 浙江歌瑞新材料有限公司 | Screw drilling tool stator prepared from blend of PTFE and FEP, and fluorine-containing material applied to stator |
| CN106762610A (en) * | 2016-11-16 | 2017-05-31 | 哈尔滨天顺化工科技开发有限公司 | A kind of screw pump stator for making polyacrylonitrile matrix |
| CN109435010A (en) * | 2019-01-04 | 2019-03-08 | 河北工业大学 | Extruded type ceramic false tooth 3D printer |
| CN109611329A (en) * | 2019-02-19 | 2019-04-12 | 盐城世宏石油装备有限公司 | A kind of processing method of rubber rotor screw oil well pump and rubber rotor |
| CN111396306A (en) * | 2020-03-27 | 2020-07-10 | 盐城世宏石油装备有限公司 | All-metal single-screw oil-gas mixed transportation pump |
| CN111542701A (en) * | 2018-01-05 | 2020-08-14 | 英雄欧洲有限责任公司 | Volumetric pump and metering system comprising at least one such pump |
| CN112423924A (en) * | 2018-07-18 | 2021-02-26 | 福格申有限责任两合公司 | Rotor for eccentric screw pump and method for manufacturing the same |
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2002
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101443556B (en) * | 2006-05-11 | 2011-08-03 | 奈赤-单体泵股份有限公司 | Stator casing for eccentric worm pumps |
| CN101352373B (en) * | 2007-07-27 | 2012-12-12 | 精工爱普生株式会社 | Method for manufacturing dental abutment and dental abutment |
| CN101803151A (en) * | 2007-09-21 | 2010-08-11 | 西门子公司 | Separating can and method for producing the same |
| CN101671507B (en) * | 2009-09-29 | 2013-03-13 | 上海海隆赛能新材料有限公司 | Preparation and application of oil well pipe dedicated weather-proof and high temperature, high pressure and high impact resisting external protective material |
| CN104595182B (en) * | 2014-11-28 | 2019-05-10 | 浙江歌瑞新材料有限公司 | It is a kind of using FEP production screw drilling tool stator and applied to the modification FEP of the stator |
| CN104563858A (en) * | 2014-11-28 | 2015-04-29 | 浙江歌瑞新材料有限公司 | Screw drill stator made of PTFE (Polytetrafluoroethylene) and PTFE applied to stator |
| CN104558985A (en) * | 2014-11-28 | 2015-04-29 | 浙江歌瑞新材料有限公司 | Screw drill stator prepared from fluorine-containing material and fluorine-containing material used for stator |
| CN104595182A (en) * | 2014-11-28 | 2015-05-06 | 浙江歌瑞新材料有限公司 | Screw drilling tool stator manufactured by using FEP and modified FEP applied to stator |
| CN104712494A (en) * | 2014-11-28 | 2015-06-17 | 浙江歌瑞新材料有限公司 | Screw drilling tool stator prepared from blend of PTFE and FEP, and fluorine-containing material applied to stator |
| CN106762610A (en) * | 2016-11-16 | 2017-05-31 | 哈尔滨天顺化工科技开发有限公司 | A kind of screw pump stator for making polyacrylonitrile matrix |
| CN111542701A (en) * | 2018-01-05 | 2020-08-14 | 英雄欧洲有限责任公司 | Volumetric pump and metering system comprising at least one such pump |
| CN112423924A (en) * | 2018-07-18 | 2021-02-26 | 福格申有限责任两合公司 | Rotor for eccentric screw pump and method for manufacturing the same |
| CN112423924B (en) * | 2018-07-18 | 2023-10-31 | 福格申有限责任两合公司 | Rotor for eccentric screw pump and method for manufacturing same |
| US11841016B2 (en) | 2018-07-18 | 2023-12-12 | Vogelsang Gmbh & Co Kg | Rotor for an eccentric screw pump and method for the manufacture thereof |
| CN109435010A (en) * | 2019-01-04 | 2019-03-08 | 河北工业大学 | Extruded type ceramic false tooth 3D printer |
| CN109611329A (en) * | 2019-02-19 | 2019-04-12 | 盐城世宏石油装备有限公司 | A kind of processing method of rubber rotor screw oil well pump and rubber rotor |
| CN111396306A (en) * | 2020-03-27 | 2020-07-10 | 盐城世宏石油装备有限公司 | All-metal single-screw oil-gas mixed transportation pump |
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