CN101621243A - Numerical control linear motor for submersible pump - Google Patents
Numerical control linear motor for submersible pump Download PDFInfo
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- CN101621243A CN101621243A CN200810045448A CN200810045448A CN101621243A CN 101621243 A CN101621243 A CN 101621243A CN 200810045448 A CN200810045448 A CN 200810045448A CN 200810045448 A CN200810045448 A CN 200810045448A CN 101621243 A CN101621243 A CN 101621243A
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Abstract
The invention aims to solve the technical problem of providing a numerical control linear motor for a submersible pump. A lower joint 2 and an upper joint 7 of the motor are respectively used for stators of motor standard sections, and are connected with stators of two adjacent standard sections through stopper positioning; the lower joint 2, the upper joint 7 and a wear-resistant sleeve 5 form a radial positioning and guiding structure of the stator sand rotators of the standard sections; each standard section of the motor is concentric with a shell 3; the radial positioning and guiding structure formed by the lower joint 2, the upper joint 7 and the wear-resistant sleeve 5 makes a rotator component 4 concentric with the shell 3; and the rotator component 4 consists of a magnetic ring, an iron ring and a central rod. The motor is made from samarium-cobalt rare earth magnetic steel resistant to high temperature and corrosion, has small polar distance deviation between the stator and the rotator, and performs closed-loop vector control by using sensorless control technology; and compared with an open-loop silicon controlled mode of the conventional motor, the closed-loop vector control has better controllability, stable motor running and quick response to dynamic control.
Description
Technical field
The invention belongs to the techniques of linear motor field, be specifically related to a kind of numerical control linear motor for submersible pump, the present invention is applicable to the pumping installations of depths lifting fluid under the crude oil well.
Background technology
The Chinese patent literature database discloses that number of patent application is 200410050431.5, invention and created name is the patent application technology of " numerically controlled reciprocating oil-immersed pump ", this patent application discloses a kind of oil-immersed pump device of power set and oil well pump being become one, though the oil production equipment of the online random adjustment parameter of this device energy, but under the high-temperature work environment of down-hole, the electric mover middle magnetic ring can be damaged, the magnetic material demagnetizes under hot environment seriously simultaneously, thereby cause motor uplift force deficiency, shorten useful life.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of numerical control linear motor for submersible pump.
Numerical control linear motor for submersible pump of the present invention comprises stator modules, lower contact, shell, mover assembly, wear-resistant sleeve, adjustment packing ring, top connection, stator sleeve;
Stator modules is made of a line bag and silicon steel sheet magnetic circuit; Lower contact, top connection, adjustment packing ring have constituted the syndeton between the standard knot stator; Lower contact and top connection are respectively the last lower contact of motor standard joint stator, by the seam location, connect the stator of adjacent two standard knots; The lower contact of linear electric motors, top connection, wear-resistant sleeve have constituted the radial location and the guide frame of standard knot stator and mover; Guiding and the location of mover in stator realized with the mover iron hoop by the wear-resistant sleeve 5 that is installed in the lower contact 2;
The stator modules of described numerical control linear motor is arranged on and adopts in the stator inner sleeve that thin-wall stainless steel makes; Be used for the stator radial location and motor Global Macros motor housing is concentric with each standard knot of linear electric motors, location that lower contact top connection wear-resistant sleeve constitutes and guiding mechanism make mover assembly and shell concentric.
Described wear-resistant sleeve and mover iron hoop contact-making surface scribble wear-resistant coating.
Magnet ring and center pole are arranged in the iron hoop of described linear motor rotor assembly.
Stator modules in the numerical control linear motor for submersible pump of the present invention is made of a line bag and silicon steel sheet magnetic circuit.
Wherein lower contact, top connection, adjustment packing ring have constituted the syndeton between the standard knot stator.Lower contact and top connection are respectively the last lower contact of motor standard joint stator, by the seam location, utilize welding manner to connect the stator of adjacent two standard knots.Because stator modules length has bigger deviation, can compensate adjustment by adjusting packing ring, the length of each standard knot is strictly controlled.In assembling process, utilize specific purpose tool, behind the adjusting pad that inserts suitable thickness, axially clamp, implement welding then.
Wherein lower contact, top connection, wear-resistant sleeve have constituted the radial location and the guide frame of standard knot stator and mover.The external diameter of lower contact and top connection is more bigger than the external diameter of stator modules, can pass through machining strict guarantee dimensional tolerance.Utilize the outside dimension of this standard, motor radial dimension precision and shell are consistent.Thoroughly overcome the deficiency of the stator modules cylindrical location that utilizes the intensity extreme difference, reduced the difficulty of stator assembling simultaneously greatly.Guiding and the location of mover in stator realized with the mover iron hoop by the wear-resistant sleeve that is installed in the lower contact.Wear-resistant sleeve and mover iron hoop contact-making surface utilize wear-resistant coating process, form the long-life friction pair.And make special surface at mover iron hoop two ends, form guiding.In the mover assembly motion process, guarantee the enough mover iron hoops and the contact length of wear-resistant sleeve inner surface, its center and stator center strictness are consistent at the volley to force mover assembly.
The effect of stator inner sleeve is to provide location and protection for stator modules.Useful thin-wall stainless steel is made.The effect of motor housing provides stator radial location and motor Global Macros.Can make each standard knot of motor and shell strict concentric aspect radial location, location and the guiding mechanism that constitutes by lower contact top connection wear-resistant sleeve makes mover assembly and shell also with one heart strict again.Thereby dwindle the frictional resistance of mover assembly in motion process greatly.
Mover assembly is made up of magnet ring, iron hoop and center pole.Mover pole span dimensional accuracy can be passed through the machining strict guarantee.By adjusting packing ring each standard stator joint dimensional accuracy is strictly controlled, this size is again the integral multiple of mover pole span, so thoroughly eliminated whole motor and in the middle of motion process, decided mover pole span Accumulated deviation, made the electromagnetic resistance of motor be reduced to minimum degree.
The invention solves the existing electric mover middle magnetic ring of original motor can be damaged and the magnetic material serious problem of demagnetizing under hot environment, and prolong the useful life of motor greatly.
The radial location of motor of the present invention is accurate, utilizes the syndeton between the motor standard joint to form accurate location, can make motor form strict concentric structure relatively in each standard knot, greatly reduces mechanical friction resistance.
The axial location of motor of the present invention is accurate, controls the length dimension tolerance of each standard knot by strictness, makes the pole span Accumulated deviation between electric mover and the stator be reduced to minimum level.Thereby, reduce electromagnetic resistance greatly, improve the motor magnetic circuit, improve the magnetic field utilization ratio, motor is operated steadily, the efficient height.Compare with the traditional structure linear electric motors, effectively lifting force can improve more than 30%, and current of electric can reduce more than 30%, can weaken deficiencies such as motor oscillating and heating greatly simultaneously.Guiding is handled with wear-resistant coating, can reduce the shock and vibration of mover iron hoop when the turnover fairlead, effectively improves guide effect, reduces friction, improves motor and mover life-span.
Motor of the present invention adopts high temperature resistant, corrosion-resistant SmCo rare earth magnetic steel, and is fixed, mover pole span deviation is little, can pass through the position Sensorless Control technology, carries out closed-loop vector and controls; The open-loop silicon controlled control mode controllability of comparing conventional motors is better, stable motor running, and dynamically control response is fast.
Description of drawings
Fig. 1 structure of the linear motion actuator schematic diagram of the present invention
Fig. 2 is the partial enlarged drawing of Fig. 1
Among the figure, 1. stator modules 2. lower contacts 3. shells 4. mover assemblies 5. wear-resistant sleeves 6. are adjusted packing ring 7. top connections 8. stator sleeves.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
In Fig. 1,2, numerical control linear motor for submersible pump mainly comprises stator modules 1, lower contact 2, shell 3, mover assembly 4, wear-resistant sleeve 5, adjusts packing ring 6, top connection 7, stator sleeve 8.Stator modules 1 is made of a line bag and silicon steel sheet magnetic circuit, in a standard knot of motor, has 15 stator modules.
Lower contact 2, top connection 7, adjustment packing ring 6 have constituted the syndeton between the standard knot stator.Lower contact 2 and top connection 7 are respectively the last lower contact of motor standard joint stator, by the seam location, utilize welding manner to connect the stator of adjacent two standard knots.Because stator modules length has bigger deviation, can compensate adjustment by adjusting packing ring 6.In assembling process, utilize specific purpose tool, behind the adjusting pad that inserts suitable thickness, axially clamp, implement welding then.
Lower contact 2, top connection 7, wear-resistant sleeve 5 have constituted the radial location and the guide frame of standard knot stator and mover.The external diameter of lower contact 2 and top connection 7 is more bigger than the external diameter of stator modules, and motor radial accuracy and shell are consistent.Thoroughly overcome the deficiency of the stator modules cylindrical location that utilizes the intensity extreme difference, reduced the difficulty of stator assembling simultaneously greatly.Guiding and the location of mover in stator realized with the mover iron hoop by the wear-resistant sleeve 5 that is installed in the lower contact 2.Wear-resistant sleeve 5 and mover iron hoop contact-making surface utilize wear-resistant coating process, form the long-life friction pair.And make special surface at mover iron hoop two ends, form guiding.In mover assembly 4 motion processes, guarantee the contact length of enough mover iron hoops and wear-resistant sleeve 5 inner surfaces, its center and stator center strictness are consistent at the volley to force mover assembly 4.
The effect of stator inner sleeve 8 is to provide location and protection for stator modules 1.Useful thin-wall stainless steel is made.The effect of motor housing 3 provides stator radial location and motor Global Macros.Can make each standard knot of motor strict concentric with shell 3 aspect radial location, location and the guiding mechanism that constitutes by lower contact 2 top connections 7 wear-resistant sleeves 5 makes mover assembly 4 and shell 3 also with one heart strict again.Thereby dwindle the frictional resistance of mover assembly 4 in motion process greatly.
Mover assembly 4 is made up of magnet ring, iron hoop and center pole.Thoroughly eliminate whole motor and in the middle of motion process, decide mover pole span Accumulated deviation by adjusting size that packing ring 6 can make each standard stator joint, make the electromagnetic resistance of motor be reduced to minimum degree.
Claims (3)
1. numerical control linear motor for submersible pump.It is characterized in that: described linear electric motors comprise stator modules (1), lower contact (2), shell (3), mover assembly (4), wear-resistant sleeve (5), adjust packing ring (6), top connection (7), stator sleeve (8); Stator modules (1) is made of a line bag and silicon steel sheet magnetic circuit; Lower contact (2), top connection (7), adjustment packing ring (6) have constituted the syndeton between the standard knot stator; Lower contact (2) and top connection (7) are respectively the last lower contact of motor standard joint stator, by the seam location, connect the stator of adjacent two standard knots; The lower contact of linear electric motors (2), top connection (7), wear-resistant sleeve (5) have constituted the radial location and the guide frame of standard knot stator and mover; Guiding and the location of mover in stator realized with the mover iron hoop by the wear-resistant sleeve (5) that is installed in the lower contact (2);
The stator modules of described numerical control linear motor (1) is arranged on and adopts in the stator inner sleeve (8) that thin-wall stainless steel makes; Be used for the stator radial location and motor Global Macros motor housing (3) is concentric with each standard knot of linear electric motors, location that lower contact (2) top connections (7) wear-resistant sleeves (5) constitute and guiding mechanism make mover assembly (4) and shell (3) with one heart.
2. numerical control linear motor for submersible pump according to claim 1 is characterized in that: described wear-resistant sleeve (5) scribbles wear-resistant coating with mover iron hoop contact-making surface
3. according to claim 1, described numerical control linear motor for submersible pump is characterized in that: in the iron hoop of described linear motor rotor assembly (4) magnet ring and center pole are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810045448A CN101621243A (en) | 2008-06-30 | 2008-06-30 | Numerical control linear motor for submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810045448A CN101621243A (en) | 2008-06-30 | 2008-06-30 | Numerical control linear motor for submersible pump |
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| Publication Number | Publication Date |
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| CN101621243A true CN101621243A (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810045448A Pending CN101621243A (en) | 2008-06-30 | 2008-06-30 | Numerical control linear motor for submersible pump |
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| CN (1) | CN101621243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312664A (en) * | 2011-01-10 | 2012-01-11 | 郑艳 | Numerical-control intelligent oil extractor system |
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2008
- 2008-06-30 CN CN200810045448A patent/CN101621243A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312664A (en) * | 2011-01-10 | 2012-01-11 | 郑艳 | Numerical-control intelligent oil extractor system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100106 |