CN108825122B - High-frequency impact linear permanent magnet motor system - Google Patents
High-frequency impact linear permanent magnet motor system Download PDFInfo
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- CN108825122B CN108825122B CN201810641119.5A CN201810641119A CN108825122B CN 108825122 B CN108825122 B CN 108825122B CN 201810641119 A CN201810641119 A CN 201810641119A CN 108825122 B CN108825122 B CN 108825122B
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- rotor
- stator
- magnetic field
- permanent magnet
- magnetic
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/12—Electrically operated hammers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/003—Bearing, sealing, lubricating details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Abstract
A linear permanent magnet motor system for high-frequency impact mainly comprises a stator system, a rotor system and a mechanical system; the method is characterized in that: the stator system includes: the stator comprises an outer cylinder, an inner cylinder, a stator core and a winding; the mover system includes: the magnetic steel compression ring comprises a rotor shaft and a plurality of groups of permanent magnets arranged in halbach, wherein each group of permanent magnets comprises an N pole, an outward magnetic field middle pole, an S pole, an inward magnetic field middle pole, a magnetic steel compression ring and an upper end of the rotor; the mechanical system comprises: the device comprises a protector piston, a seal, a multifunctional rear support cover, a return energy storage capsule, a capsule stress cover, a linear bearing, a displacement sensor body, a sensor moving ring, a moving ring mounting seat, a moving ring gland, an anti-collision rubber block, a front linear bearing, a front fixed seat, a front moving seal and a hammer. The invention has wide application range, is mainly used for high-frequency auxiliary impact devices for petroleum drilling under high temperature and high pressure, and can also be used for occasions requiring high-frequency reciprocating impact motion, such as resonance crushing heads of cement pavements, tunnel rock tunneling auxiliary impact equipment and the like.
Description
Technical Field
The invention relates to the field of petroleum auxiliary impact drilling and rock breaking, and discloses a high-frequency impact linear permanent magnet motor system which is resistant to high temperature and high pressure, high in efficiency and continuously adjustable in impact frequency and motion amplitude and can be used as underground petroleum drilling auxiliary impact equipment and application occasions such as tunnel impact rock breaking, airport and cement pavement resonance breaking.
Background
The most part of the motor is a rotating motor, the output is rotary motion, when the linear motion is needed, a motion conversion mechanism is needed to convert the rotary motion into the linear motion, and therefore the problems of low efficiency and low frequency exist. The linear motor can directly realize linear reciprocating motion without conversion, has simple structure, and can improve the efficiency of the system and the frequency of the reciprocating motion. The petroleum drilling adopts the rotary rock breaking at present, if reciprocating impact motion can be superposed on the rotary motion, the rock breaking efficiency can be greatly improved, the reciprocating impact linear motion is realized, if the integral impact motion is impossible for a drill rod of thousands of meters, the impact motion mechanism can only be installed at an underground drill bit, meanwhile, due to the limitation of a drilling space, the diameter of the mechanism is strictly required, and due to the difficult problems of high temperature, high pressure and the like existing in the deep underground, the mechanism which is small in size, can work at high frequency and has continuously adjustable working frequency is urgently needed. The general linear motor works on the ground, and cannot bear the high-temperature and high-pressure environment structurally; the conventional reciprocating motor adopts a mechanical spring structure, has the problems of low natural frequency, easy corrosion damage, spring coefficient creep and the like, and Chinese patent 102013783A discloses a light direct current linear motor which is not suitable for a high-temperature and high-pressure working environment. As the technology belongs to a new technology, no linear motor system which can meet the requirements of working conditions exists in the market.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the high-efficiency linear motor system overcomes the defects of the prior art, has high power density, high motion frequency and long service life, can be used at high temperature and high pressure and also can be applied to the ground, and simultaneously has adjustable motion frequency and motion amplitude.
The technical solution of the invention is as follows: a high-frequency impact linear permanent magnet motor system mainly comprises a stator system, a rotor system and a mechanical system; the stator system includes: the stator comprises an outer cylinder, an inner cylinder, a stator core and a winding; the mover system includes: the magnetic steel compression ring comprises a rotor shaft and a plurality of groups of permanent magnets arranged in halbach, wherein each group of permanent magnets comprises an N pole, an outward magnetic field middle pole, an S pole, an inward magnetic field middle pole, a magnetic steel compression ring and an upper end of the rotor; the mechanical system comprises: the device comprises a protector piston, a multifunctional rear support cover, a return energy storage capsule, a capsule stressed cover, a linear bearing, a displacement sensor body, a sensor movable ring, a movable ring mounting seat, a movable ring gland, an anti-collision rubber block, a front bearing gland, a front linear bearing, a front fixing seat, a front movable seal and a punch hammer, wherein the upper end of an outer cylinder is in interference fit with the front fixing seat, the lower end of the outer cylinder is in interference fit with the multifunctional rear support cover, the upper end of the inner cylinder is mounted on the matching surface of the front fixing seat through screws, two O-shaped seal rings are arranged in the middle of the inner cylinder for sealing, the lower end of the inner cylinder is mounted on the matching surface of the multifunctional rear support cover through screws, two O-shaped seal rings are arranged in the middle of the inner cylinder for sealing, a stator core is provided with multiple groups, each group consists of a left block and a right block, the outer diameter of the, the upper end of the permanent magnet is arranged on the upper end head of the rotor, the permanent magnets arranged in halbach are provided with a plurality of groups, each group consists of an N pole, an outward middle pole of a magnetic field, an S pole and an inward middle pole of the magnetic field, the upper end of the permanent magnet is close to the end surface of the upper end head of the rotor, the lower end of the permanent magnet is tightly pressed by a magnetic steel press ring through an internal thread, the protector piston is provided with two oppositely arranged seal rings and is integrally arranged in the cylinder body of the multifunctional rear support cover, one end of a return energy storage capsule is close to the end surface of the multifunctional rear support cover, the other end of the return energy storage capsule is close to the capsule stress cover, a rotor assembly is close to the capsule stress cover through the magnetic steel press ring, the displacement sensor body is fixedly arranged at the end part of the core shaft of the multifunctional rear support cover through interference fit, the movable ring of the sensor, the other end of the rotor is tightly pressed by a front bearing gland, two front moving seals are arranged in a sealing groove of a front fixing seat, and the impact hammer is arranged at the end part of the upper end head of the rotor through threads; the four magnetic steels on the motor rotor are in a group, N in each group is annular, radial magnetization is carried out, the direction of a magnetic field points to the outside from the inside, the middle of the magnetic field points to the outside is annular, axial magnetization is carried out, the magnetic field points to the left from the right, S is annular, radial magnetization is carried out, the direction of the magnetic field points to the inside from the outside, the middle of the magnetic field points to the inside is annular, axial magnetization is carried out, and the direction of the magnetic field points to the right from the left; the rotor shaft is of a hollow thin-wall structure and made of a magnetic conductive material, the magnetic steel pressure ring and the upper end head of the rotor are made of non-magnetic stainless steel, nitrogen is filled in the return energy storage capsule, the return energy storage capsule is made of fluororubber, upward kinetic energy of the rotor assembly is absorbed and stored through the capsule stress cover, and the kinetic energy is released when the rotor assembly moves downward; the anti-collision rubber block is made of silicon rubber; the front linear bearing is made of tin bronze; the stator iron core is of a left-right split structure and is made of iron-based amorphous materials; the windings are annular, and are connected in parallel after each group of windings appears outside, and a high-frequency line with corona resistance is adopted; the displacement sensor body is a high-frequency giant magnetostrictive displacement sensor and is arranged at the end part of the mandrel, and the sensor moving ring is arranged in the moving rotor shaft; the protector piston is made of tin bronze, two U-shaped sealing rings which are oppositely arranged are arranged on the protector piston, two double-O-shaped rings are adopted for all static seals, two front moving seals (25) are adopted, wear-resistant copper powder and tetrafluoroethylene material are adopted for the outermost part, and the tetrafluoroethylene material is adopted for the other part; the motor is filled with 20 to 30 # transformer oil.
The principle of the scheme is as follows: the N pole, the middle pole outside the magnetic field, the S pole and the middle pole inside the magnetic field of the motor rotor form a closed magnetic field, the magnetic field is very strong in the air gap magnetic field of the rotor and the stator, and the magnetic field is very weak in the magnetic yoke part of the rotor, so that the thickness of the stator yoke part can be reduced, the quality of the rotor can be reduced, the motion frequency of the rotor can be improved, according to the magnitude of the required force, a plurality of groups of magnetic steels are adopted, the groups are in parallel connection, and finally, the magnetic steel pressing ring is pressed at the end part to form a rotor system which corresponds to the rotor, the stator system is correspondingly connected with the rotor system in parallel, each group comprises a left iron core and a right iron core, and because of the shape of a magnetic circuit, the iron cores adopt an iron-based amorphous material with large magnetic conductivity, small coercive force and large resistivity to reduce the loss, the stator module is matched with the inner diameter of the inner cylinder through the outer diameter, is pressed and installed by a press, and is connected in parallel at last, and the wire outlet is arranged in the groove of the inner cylinder. The gap between the inner cylinder and the outer cylinder passes drilling cutting slurry and also has a cooling effect on the stator of the motor, when the motor needs to move forwards, a stator winding is electrified with forward current, the winding generates a magnetic field, the magnetic field interacts with the magnetic field of a rotor assembly to push a rotor shaft to move forwards, the self mass of the rotor shaft and the mass of a hammer impact a load to generate an impact effect, a sensor moving ring is arranged on the rotor shaft, a moving signal of the rotor shaft is transmitted to a control system through a displacement sensor, the control system determines the magnitude and the direction of the current according to the displacement through a corresponding control algorithm, the motor is filled with No. 20 to No. 30 transformer oil, the oil is balanced with the external pressure through a protector piston, so that the pressure of the oil inside the transformer is consistent with the external pressure, the service life of a sealing element is prolonged, and when the temperature is increased or reduced, the volume of, the changes can be compensated by the movement of the piston of the protector, and the two U-shaped seals on the piston are oppositely arranged, so that the external well fluid under low pressure can not permeate into the motor, and the oil in the motor can not permeate out; when the rotor shaft moves upwards in a return stroke, the return stroke energy storage capsule is compressed through the magnetic steel pressure ring and the capsule gland, nitrogen gas filled in the energy storage capsule is compressed, the volume is reduced, kinetic energy is stored in the energy storage capsule until the speed of the rotor shaft is zero, when impact motion is carried out, the stator system generates downward thrust to the rotor system when the motor is electrified in the positive direction, compressed gas in the capsule expands to release energy, the rotor system is jointly pushed to move forwards, impact energy is generated, the impact hammer impacts the drill bit, a rock breaking effect is generated, if the drill bit is too far away from the impact hammer, the rotor system impacts the anti-collision rubber block, and system damage is avoided.
The advantages of the invention compared with the prior similar system are that: the structure is compact, the rotor assembly is light in weight and high in natural frequency, the magnetic steel is in a halbach arrangement form, and the power density of the rotor is high; the energy storage capsule is used as a restoring elasticity, the natural frequency is high, the higher impact frequency can be achieved, and meanwhile, the fluororubber has the advantages of high temperature resistance and corrosion resistance; the piston type protector is adopted, transformer oil is filled in the protector, the internal and external pressure difference of the motor is balanced, the sealing life is prolonged, the volume change of the transformer oil caused by temperature change can be compensated, the heat dissipation is facilitated, and the piston type protector can be used for assisting rock breaking in petroleum drilling and can also be used for resonance rock breaking in cement roads and airports.
Drawings
Fig. 1 is an overall three-dimensional cross-sectional view of a high-frequency impact linear permanent magnet motor system of the technical solution of the present invention;
fig. 2 is a schematic diagram of an iron core 3 of a high frequency impact linear permanent magnet motor system according to the technical solution of the present invention;
fig. 3 is a schematic view of an inner cylinder 2 of a high frequency impact linear permanent magnet motor system according to the technical solution of the present invention;
fig. 4 is a schematic diagram of an inner cylinder assembly composed of an inner cylinder 2, a multifunctional rear supporting cover 13 and a front fixing seat 24 of a high-frequency impact linear permanent magnet motor system according to the technical solution of the present invention;
FIG. 5 is a schematic diagram of a permanent magnet assembly of a high frequency impulse linear permanent magnet motor system in accordance with the present inventive technique;
FIG. 6 is a schematic view of a mover assembly of a high frequency impact linear permanent magnet motor system in accordance with a preferred embodiment of the present invention;
fig. 7 is an assembly schematic diagram of the multifunctional rear support cover 13, the return energy storage capsule 14, the displacement sensor body and the protector of the high-frequency impact linear permanent magnet motor system according to the technical solution of the present invention;
fig. 8 is an assembly view of a front mounting seat 24 and the like of a high frequency impact linear permanent magnet motor system according to the technical solution of the present invention;
Detailed Description
As shown in fig. 1, the stator system mainly comprises a stator system, a mover system and a mechanical system, wherein the stator system comprises: the stator comprises an outer cylinder 1, an inner cylinder 2, a stator core 3 and a winding 4; the mover system includes: the rotor comprises a rotor shaft 5 and a plurality of groups of permanent magnets, wherein each group of permanent magnets comprises an N pole 6, a magnetic field outward middle pole 7, an S pole 8, a magnetic field inward middle pole 9, a magnetic steel pressure ring 10 and a rotor upper end 11; the mechanical system comprises: the device comprises a protector piston 12, a multifunctional rear support cover 13, a return energy storage capsule 14, a capsule stressed cover 15, a linear bearing 16, a displacement sensor body 17, a sensor movable ring 18, a movable ring mounting seat 19, a movable ring gland 20, an anti-collision rubber block 21, a front bearing gland 22, a front linear bearing 23, a front fixed seat 24, a front movable seal 25 and a punch hammer 26, wherein the upper end of an outer cylinder 1 is in interference fit with the front fixed seat 24, the lower end of the outer cylinder is in interference fit with the multifunctional rear support cover 13 by 0.06 mm to 0.1 mm, the upper end of an inner cylinder 2 is mounted on the matching surface of the front fixed seat 24 through screws, two O-shaped seal rings are arranged in the middle of the inner cylinder for sealing, the lower end of the inner cylinder is mounted on the matching surface of the multifunctional rear support cover 13 through screws, two O-shaped seal rings are arranged in the middle of the inner cylinder, two stator cores 3 are arranged, in order to facilitate the coil inserting, the winding 4 is arranged between a left block and a right block of the stator core 3, the coil is externally led out, a coil outlet is led out in parallel in a groove of the inner cylinder 2, the lower end of a rotor shaft 5 is arranged on a mandrel of a multifunctional rear support cover 13 through a linear bearing 16, the upper end of the rotor shaft is arranged on an upper end head 11 of the rotor, a plurality of groups of permanent magnets are arranged in halbach, each group consists of an N pole 6, an outward middle pole 7 of a magnetic field, an S pole 8 and an inward middle pole 9 of the magnetic field which are arranged in sequence, the upper end of the rotor shaft abuts against the end surface of the upper end head 11 of the rotor, the lower end of the rotor shaft is pressed tightly through a magnetic steel pressing ring 10 through screw threads, two U-shaped sealing rings which are oppositely arranged are arranged on a protector piston 12 and integrally arranged in a cylinder body of the multifunctional rear support cover 13, a return energy storage, the rotor component is pressed on the 15 surfaces of the capsule stress cover through the magnetic steel pressing ring 10, the displacement sensor body 17 is fixedly installed at the end part of the core shaft of the multifunctional rear supporting cover 13 through interference fit, the sensor moving ring 18 is installed on the moving ring installing seat 19 through sliding fit, and is tightly pressed through screws by the moving ring pressing cover 20, the anti-collision rubber block 21 is installed on the front fixing seat 24 through screws, the front linear bearing 23 is installed in the inner hole of the front fixing seat 24, the other end of the front linear bearing is tightly pressed through the front bearing pressing cover 22, the front moving seals 25 are two in number, different in material and installed in the sealing groove of the front fixing seat 24, and the impact hammer 26 is installed at the end part 10.
Fig. 2 is a schematic structural diagram of a stator core 3 according to the present invention, the stator core 3 is composed of an end core 31 and an intermediate core 32, fig. 2a is a schematic sectional view of the end core 31, fig. 2b is a schematic three-dimensional sectional view of the end core, fig. 2c is a schematic sectional view of the intermediate core 32, fig. 2d is a schematic three-dimensional sectional view of the intermediate core 32, the end cores 31 are disposed at both ends of the core 3, the intermediate cores 32 are sequentially arranged, the three-dimensional sectional view after the arrangement is shown in fig. 2e, the sectional view is shown in fig. 2f, a stator winding 4 is disposed at 302 of the sectional view 2f of the core 3, a wire outlet is formed at 301, a wire outlet hole 301 is formed in a straight line, and then the whole is mounted in the inner cylinder 2, the inner diameter of the inner cylinder 2 and the outer diameter of the core 3 are.
Fig. 3 is a schematic diagram of the inner cylinder 2 of the invention, pin mounting holes are provided at 201 and 203 on the diagram, 202 of the inner cylinder 2 is a winding 4 outgoing line place which is respectively mounted in the corresponding pin hole of the front fixing seat 24 and the multifunctional rear support cover 13, the winding 4 incoming and outgoing lines are welded in parallel here, and then led out from the outgoing line hole of the multifunctional rear support cover 13.
Fig. 4 is a schematic diagram of an assembly of the outer cylinder 1 and the inner cylinder 2 in the invention, the inner cylinder 2 is connected with the front fixed seat 24 and the multifunctional supporting cover 13 through 8 pins at 201, and drilling fluid flows through a gap between the outer cylinder 1 and the inner cylinder 2, which is a circulation channel of the drilling fluid and cools a stator of a motor.
Fig. 5 is a view of the mover permanent magnet assembly of the present invention, fig. 5a is a front view, fig. 5b is a three-dimensional view, in fig. 5a, the N pole 6, the magnetic field outward middle pole 7, the S pole 8 (magnetic poles are NS, and it is not stated that one ring is N pole or S pole), and the magnetic field inward middle pole 9 are all circular, the magnetizing directions thereof are as shown in fig. 5a, the N pole 6, the magnetic field outward middle pole 7, the S pole 8, and the magnetic field inward middle pole 9 are arranged from right to left in the figure, four are in one group, and the groups are arranged in the same direction, the magnetic field formed by this way is strong at the air gap of the motor, and the magnetic field is weak at the yoke portion, so as to reduce the weight of the mover of the motor and increase the vibration frequency of the.
Fig. 6 is an assembly drawing of the mover of the present invention, as shown in the drawing, the mover shaft 5 is made of a material with high magnetic permeability, one end of the mover shaft is in large interference fit with the cylindrical surface of the mover upper end 11, the mover upper end 11 is made of a non-magnetic stainless steel material, the permanent magnet assemblies shown in fig. 5 are arranged on the mover shaft, one end of each permanent magnet assembly is fixed on the end surface of the mover upper end 11, the other end of each permanent magnet assembly is pressed by a magnetic steel pressing ring 10, and the internal threads of the magnetic steel pressing ring 10 are in external thread fit. In the figure, the position 501 is close to the end face of the linear bearing, the position 503 is provided with the linear bearing, the position 504 is provided with the movable ring mounting seat 19 of the displacement sensor, the position 505 is provided with the front linear bearing 23, and the position 506 is provided with the hammer 26 through external threads.
FIG. 7 is an assembly schematic diagram of the multifunctional rear support cover 13, the displacement sensor body 14, the return energy storage capsule 14 and the protector of the invention, FIG. 7a is a two-dimensional cross-sectional view, FIG. 7b is a three-dimensional view, the displacement sensor body 17 is installed at the end of the core shaft of the multifunctional rear end cover and is pressed by the pressing cover 28 through screws, a middle hole 1401 passes through the cable of the sensor, a hole at 1302 is a motor stator line channel, 1301 passes through drilling fluid, 1303 is an o-shaped sealing ring, two seals 10 are installed on the protector piston 11, the seals 10 are U-shaped seals and are installed back to ensure no leakage under low pressure, the return energy storage capsule 14 is installed in the front cavity of the multifunctional rear support cover 13, the kinetic energy of the rotor shaft is absorbed by the compression of gas, in order to make the force applied to the return energy storage capsule 14 uniform, the capsule force applying cover 15 is installed in front of the capsule, the return, the capsule is made of fluororubber.
FIG. 8 is a schematic diagram of an assembly of an anti-collision rubber block 21, a front bearing gland 22, a front linear bearing 23, a front fixing seat 24 and a front moving seal 25 of the present invention, wherein FIG. 8a is a schematic sectional diagram, FIG. 8b is a schematic three-dimensional diagram, the anti-collision rubber block 21 is made of high temperature resistant and elastic silicone rubber, and has 6 counter bores thereon, and is mounted on an end surface of the front fixing seat 24 by screws, the front linear bearing 23 is made of tin bronze and is a sliding bearing, and has a guiding function and a supporting function on the one hand, and the inner circle of the front linear bearing is 0.01-0.02mm larger than the outer diameter of the shaft, and is mounted on an inner hole of the front fixing seat 24 by matching, the front bearing gland 22 is fixed and pressed on the end surface of the fixing seat 24 by 6 counter screws, the front moving seal 25 is made of a moving seal of different materials, is mounted in the sealing groove of the fixed seat 24.
In a word, the high-frequency impact linear permanent magnet motor system provided by the invention has the advantages of high power density, high motion frequency and high efficiency, can be used under high-frequency impact at high temperature and high pressure, and is adjustable in motion frequency and motion amplitude.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A high-frequency impact linear permanent magnet motor system mainly comprises a stator system, a rotor system and a mechanical system; the method is characterized in that: the stator system includes: the stator comprises an outer cylinder (1), an inner cylinder (2), a stator core (3) and a winding (4); the mover system includes: the magnetic rotor comprises a rotor shaft (5) and a plurality of groups of permanent magnets arranged in halbach, wherein each group of permanent magnets comprises an N pole (6), a magnetic field outward middle pole (7), an S pole (8), a magnetic field inward middle pole (9), a magnetic steel pressure ring (10) and a rotor upper end (11); the mechanical system comprises: a protector piston (12), a multifunctional rear support cover (13), a return energy storage capsule (14), a capsule stress cover (15), a linear bearing (16), a displacement sensor body (17), a sensor movable ring (18), a movable ring mounting seat (19), a movable ring gland (20), an anti-collision rubber block (21), a front bearing gland (22), a front linear bearing (23), a front fixing seat (24), a front moving seal (25) and a punch hammer (26), wherein the upper end of an outer cylinder (1) is in interference fit with the front fixing seat (24), the lower end of the outer cylinder is in interference fit with the multifunctional rear support cover (13), the upper end of an inner cylinder (2) is arranged on the matching surface of the front fixing seat (24) through pins, the middle of the inner cylinder is sealed by two O-shaped seal rings, the lower end of the inner cylinder is arranged on the matching surface of the multifunctional rear support cover (13) through pins, the middle of the inner, one is an end iron core (31), the other is a middle iron core (32), the outer diameter of the stator iron core (3) is matched with the inner diameter of the inner cylinder (2), a winding (4) is arranged between the left block and the right block of the stator iron core (3), wires are led out from the outside, wire outlets face to grooves of the inner cylinder (2), then leads are led out in parallel, the lower end of a rotor shaft (5) is arranged on a mandrel of a multifunctional rear supporting cover (13) through a linear bearing (16), the upper end of the rotor shaft is arranged on an upper end head (11) of the rotor, a plurality of groups of permanent magnets are arranged in a halbach mode, N poles (6), magnetic field outward middle poles (7), S poles (8) and magnetic field inward middle poles (9) in each group are arranged in sequence, the N poles (6) in each group are annular, the magnetic fields are magnetized in radial directions, the magnetic fields point from the inside to the outside, the magnetic fields are outward, the magnetic fields outward middle poles (7, the S pole (8) is annular, the magnetic field is magnetized in the radial direction, the direction of the magnetic field is directed to the inside from the outside, the middle pole (9) facing the inside of the magnetic field is annular, the magnetic field is magnetized in the axial direction, the magnetic steel is composed of a plurality of groups of permanent magnets arranged in the right direction and the left direction, the upper end of the magnetic steel is abutted against the end surface of the upper end (11) of the rotor, the lower end of the magnetic steel is tightly pressed by a magnetic steel pressing ring (10) through threads, two U-shaped sealing rings which are oppositely arranged are arranged on a protector piston (12) and integrally arranged in a cylinder body of the multifunctional rear supporting cover (13), a return energy storage capsule (14) is arranged in a front cavity of the multifunctional rear supporting cover (13), one end of the return energy storage capsule (14) is abutted against the end surface of the multifunctional rear supporting cover (13) and the other end of the return energy storage capsule is abutted against the capsule stressed cover (15), the rotor system is pressed against the surface, the sensor movable ring (18) is installed in a movable ring installation seat (19) hole in a sliding fit mode, a movable ring gland (20) is compressed through a screw, an anti-collision rubber block (21) is installed on the end face of a front fixed seat (24) through a screw, a front linear bearing (23) is installed in an inner hole of the front fixed seat (24), the other end of the front linear bearing is compressed through a front bearing gland (22), two front movable seals (25) are installed in a seal groove of the front fixed seat (24), and a punching hammer (26) is installed at the end portion of an upper end (11) of a rotor through threads.
2. A high frequency impulse linear permanent magnet motor system according to claim 1, characterized in that: the rotor shaft (5) is of a hollow thin-wall structure and made of magnetic conductive materials, the magnetic steel pressure ring (10) and the upper end (11) of the rotor are made of non-magnetic conductive stainless steel, nitrogen is filled in the return energy storage capsule (14), the return energy storage capsule is made of fluororubber, upward kinetic energy of the rotor system is absorbed and stored through the capsule stress cover (15), and the kinetic energy is released when the rotor system moves downwards.
3. A high frequency impulse linear permanent magnet motor system according to claim 1, characterized in that: the anti-collision rubber block (21) is made of silicon rubber; the front linear bearing (23) is made of tin bronze.
4. A high frequency impulse linear permanent magnet motor system according to claim 1, characterized in that: the stator core (3) is of a left-right split structure, a middle round hole is used for outgoing wires after being sealed, and the material of the stator core is iron-based amorphous.
5. A high frequency impulse linear permanent magnet motor system according to claim 1, characterized in that: the winding (4) is annular, each group of external outgoing wires are connected in parallel, and a high-frequency wire with corona resistance is adopted.
6. A high frequency impulse linear permanent magnet motor system according to claim 1, characterized in that: the displacement sensor body (17) is a high-frequency giant magnetostrictive displacement sensor and is arranged at the end part of a mandrel of the multifunctional rear support cover (13), and the sensor moving ring (18) is arranged in an inner hole of the movable rotor shaft (5).
7. A high frequency impulse linear permanent magnet motor system according to claim 1, characterized in that: the protector piston (12) be integrated form, protector piston (12) are tin bronze, two U type sealing rings of relative installation of facial make-up, all static seals adopt two O type circles, preceding removal seal (25) have two, adopt wear-resisting copper powder and tetrafluoroethylene material outermost, another adopts the tetrafluoroethylene material.
8. A high frequency impulse linear permanent magnet motor system according to claim 1, characterized in that: the motor is filled with 20 to 30 # transformer oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810641119.5A CN108825122B (en) | 2018-06-20 | 2018-06-20 | High-frequency impact linear permanent magnet motor system |
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| CN201810641119.5A CN108825122B (en) | 2018-06-20 | 2018-06-20 | High-frequency impact linear permanent magnet motor system |
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| CN108825122B true CN108825122B (en) | 2019-12-27 |
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| WO2022047598A1 (en) * | 2020-09-03 | 2022-03-10 | Rodriguez Rios Borja | Reciprocating linear induction motor device |
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