CN111817481A - Novel explosion-proof synchronous reluctance motor and manufacturing method thereof - Google Patents
Novel explosion-proof synchronous reluctance motor and manufacturing method thereof Download PDFInfo
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- CN111817481A CN111817481A CN202010860493.1A CN202010860493A CN111817481A CN 111817481 A CN111817481 A CN 111817481A CN 202010860493 A CN202010860493 A CN 202010860493A CN 111817481 A CN111817481 A CN 111817481A
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- end cover
- rotor
- cover
- base
- proof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Abstract
The invention discloses a novel explosion-proof synchronous reluctance motor and a manufacturing method thereof, comprising a machine base, a stator core, a rotor core and a rotating shaft, the front end and the rear end of the engine base are respectively provided with a front end cover and a rear end cover, the bearing chambers of the front end cover and the rear end cover are respectively provided with a bearing inner cover correspondingly, a plane explosion-proof joint surface is formed between the front end cover and the corresponding bearing inner cover and between the rear end cover and the corresponding bearing inner cover, a rotating shaft is arranged in the machine base and penetrates through bearings in the bearing chambers at two sides, a rotor core is sleeved on the rotating shaft, the periphery of the rotor core is provided with a stator core, the rotor core is cylindrical and is formed by stacking a plurality of rotor punching sheets, the rotor punching sheet is characterized in that a shaft hole is formed in the center of the rotor punching sheet, connecting holes are formed in the periphery of the shaft hole, and a magnetic flux shielding group is further arranged on the rotor punching sheet and uniformly distributed in the circumferential direction by taking the shaft hole as the circle center. The invention has the advantages of simple structure, firmness, durability, high efficiency, wide speed regulation range and lower cost.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a novel explosion-proof synchronous reluctance motor and a manufacturing method thereof.
Background
At present, domestic explosion-proof motors are mainly traditional three-phase asynchronous explosion-proof motors, and a small number of manufacturers also produce explosion-proof permanent magnet synchronous motors, wherein the efficiency of the former motors mainly takes IE2 and IE3 at present, but the frequency modulation range of the motor is narrow, and the overload capacity of the motor is limited; the magnetic steel is embedded in the latter motor, so that the motor cannot run at high temperature (the magnetic steel is easy to demagnetize at high temperature), and certain limitation is caused; with the deep popularization of national energy policies and the collaborative development concept of resource-saving and environment-friendly society, the material-saving type explosion-proof motor with high efficiency, wide frequency modulation range, wide application range and strong overload capacity is researched and developed to become the development trend of the next generation explosion-proof motor. Related products are now lacking in the market.
Disclosure of Invention
In order to solve the above problems, the present invention provides the following technical solutions: a novel explosion-proof synchronous reluctance motor comprises a machine base, a stator core, a rotor core and a rotating shaft, the front end and the rear end of the machine base are respectively provided with a front end cover and a rear end cover, the front end cover and the rear end cover are respectively provided with an inner shell part and a bearing chamber, bearing inner covers are correspondingly arranged on one sides of the bearing chambers of the front end cover and the rear end cover, a plane explosion-proof joint surface is formed between the inner shell parts of the front end cover and the rear end cover and the corresponding bearing inner covers, a rotating shaft is arranged in the machine base and penetrates through bearings in the bearing chambers at two sides, a rotor core is sleeved on the rotating shaft, the periphery of the rotor core is provided with a stator core, the rotor core is cylindrical and is formed by stacking a plurality of rotor punching sheets, the rotor punching sheet is characterized in that a shaft hole is formed in the center of the rotor punching sheet, connecting holes are formed in the periphery of the shaft hole, and a magnetic flux shielding group is further arranged on the rotor punching sheet and uniformly distributed in the circumferential direction by taking the shaft hole as the circle center.
Further, the magnetic flux barrier group comprises a first magnetic flux barrier, a second magnetic flux barrier and a third magnetic flux barrier which are arranged from inside to outside in the radial direction, and magnetic bridges are arranged in the middle positions of the first magnetic flux barrier and the second magnetic flux barrier.
Furthermore, one side of the inner shell part is provided with a threaded blind hole, and the bearing inner cover is provided with a threaded through hole corresponding to the threaded blind hole.
Furthermore, the base is also connected with a junction box.
Furthermore, the rotor sheets are connected through bolts.
Further, the widths of the magnetic bridges are communicated.
The manufacturing method of the novel explosion-proof synchronous reluctance motor is characterized by comprising the following steps of:
s1, manufacturing a stator punching sheet and a rotor punching sheet: blanking a silicon steel sheet to respectively manufacture a stator punching sheet and a rotor punching sheet;
s2, manufacturing a rotating shaft; the method comprises the following steps of blanking a raw material of a rotating shaft, turning and milling, then putting a rotor into a shaft, and sequentially performing processes of finish turning of the outer circle of the rotor, grinding of the outer circle of the shaft and correction of dynamic balance;
s3, manufacturing a base; sequentially carrying out the procedures of turning a reference surface, drilling and tapping, finish turning, milling a bottom foot surface, milling a line door and drilling and tapping again on a machine base casting, and then pressing the machine base casting into a machine base;
s4, manufacturing the rest parts; sequentially turning, drilling and supplying wires to an end cover casting, a bearing inner cover casting, a bearing outer cover casting, a junction box base casting and a junction box cover casting;
s5, front assembly; assembling the manufactured stator punching sheet, the rotating shaft, the base, the end cover, the bearing inner cover, the bearing outer cover, the junction box base and the junction box cover with a standard component to be installed;
s6, spray painting: connecting the assembled components with a junction box and a junction box hopper, and performing surface painting;
s7, post assembling; adding functional parts to the parts after painting;
and S8, packaging and warehousing.
Further, the stator punching sheet in the step S1 needs to be subjected to the processes of stator core lamination, wire insertion, wiring, turn-to-turn experiment, withstand voltage experiment and insulation treatment.
Further, the base, the end caps, the inner bearing caps and the terminal block base all require hydraulic tests before being assembled.
The invention has the advantages that:
1. the working characteristics of synchronous reluctance are applied to an explosion-proof motor system, the problem that the cost of a traditional explosion-proof variable frequency motor is high is solved, the principle of minimum reluctance path closure is utilized, the rotor sheet which is independently developed by generating magnetic pull force through reluctance change of a rotor at different positions does not need to be cast with aluminum or embedded with magnetic steel, the risk of loss of magnetism at high temperature is avoided, the aluminum casting process of a conventional motor is omitted, and the energy efficiency of the motor is improved to the level of IE4 under the condition that the same shell and the same shape scale are guaranteed to be adopted.
2. Through changing original inner shell portion through-hole for the screw thread blind hole, changing the blind hole of bearing inner cup screw thread department for the screw thread through-hole, reasonable adjustment flame proof face structure has stopped the motor and has led to the oil leak or the phenomenon of intaking because of bolted connection problem, has stopped the condition of speed reducer trade flange oil leak.
3. The rotor punching sheet is connected and fastened by bolts in a special fixing mode, the traditional aluminum casting or copper casting process is replaced, and the operation is convenient and fast.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a side cross-sectional view of the present invention.
Fig. 3 is a structural view of a rotor sheet.
Fig. 4 is a structural view of a conventional inner case portion.
Fig. 5 is a structural view of a conventional inner case portion.
In the figure: 1. a machine base; 2. a stator core; 3. a rotor core; 4. a rotating shaft; 5. a front end cover; 6. a rear end cap; 7. an inner shell portion; 8. a bearing chamber; 9. an inner bearing cover; 10. rotor punching sheets; 11. a shaft hole; 12. connecting holes; 13. a first magnetic flux barrier; 14. a second magnetic flux barrier; 15. a third magnetic flux barrier; 16. a magnetic bridge; 17. a threaded blind hole; 18. a junction box; 19. and (4) bolts.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
Referring to fig. 1-5, a novel explosion-proof synchronous reluctance motor comprises a base 1, a stator core 2, a rotor core 3 and a rotating shaft 4, wherein a front end cover 5 and a rear end cover 6 are respectively arranged at the front end and the rear end of the base 1, an inner shell 7 and a bearing chamber 8 are respectively arranged in the front end cover 5 and the rear end cover 6, a bearing inner cover 9 is correspondingly arranged at one side of the bearing chamber 8 of the front end cover 5 and the rear end cover 6, a planar explosion-proof joint surface is formed between the inner shell 7 of the front end cover 5 and the rear end cover 6 and the corresponding bearing inner cover 9, as shown in fig. 4, a through hole a is designed on the traditional inner shell 7, a blind hole is arranged at the position corresponding to the bearing inner cover 9, a bolt sequentially passes through the through hole a and the blind hole, then the inner shell 7 and the bearing inner cover 9 are connected together, and a planar explosion-proof joint surface is, therefore, as shown in fig. 5, in this embodiment, the through hole of the original inner housing 7 is changed to be a threaded blind hole 17, the blind hole at the inner cover 9 of the bearing is changed to be a threaded through hole, and then the situation that the motor is connected by the bolt 19 to cause oil leakage or water inflow can be solved well by the bolt 19, the housing 1 is internally provided with the rotating shaft 4, the rotating shaft 4 passes through the bearings in the bearing chambers 8 at both sides, the rotating shaft 4 is sleeved with the rotor core 3, the periphery of the rotor core 3 is provided with the stator core 2, the rotor core 3 is cylindrical, the rotor core 3 is formed by stacking a plurality of rotor laminations 10, the center of the rotor lamination 10 is provided with the shaft hole 11, the periphery of the shaft hole 11 is provided with the connecting hole 12, each rotor lamination 10 is connected by the bolt 19 passing through the connecting hole 12 on the plurality of rotor laminations 10, so that the rotor does not need to be cast aluminum, the cast aluminum, magnetic resistance change that arouses through the rotor in different positions produces magnetic pull and produces power, consequently, need not to inlay the magnet steel, the risk of losing magnetism under the high temperature has both been avoided, synchronous magnetic resistance concrete structure is equipped with magnetic flux shielding group for rotor punching 10, magnetic flux shielding group is equipped with four altogether, use shaft hole 11 as the centre of a circle according to circumferencial direction evenly distributed, thereby form four magnetic poles, every magnetic flux shielding group is including the first magnetic flux barrier 13 of from interior to exterior radial setting, second magnetic flux barrier 14 and third magnetic flux barrier 15, the intermediate position of first magnetic flux barrier 13 and second magnetic flux barrier 14 all is provided with magnetic bridge 16, magnetic bridge 16's width communicates with each other, can promote certain mechanical strength, still be connected with terminal box 18 on the frame 1. The advantage of this embodiment lies in applying the operating characteristic of synchronous magnetic resistance to explosion-proof machine system for explosion-proof machine need not cast aluminium and inlay the magnet steel, under the circumstances of guaranteeing to adopt same casing and appearance size, improves the motor efficiency and reaches IE4 level.
Example 2
A manufacturing method of a novel explosion-proof synchronous reluctance motor comprises the following steps:
s1, manufacturing a stator punching sheet and a rotor punching sheet 10: blanking silicon steel sheets to respectively manufacture a stator punching sheet and a rotor punching sheet 10;
s2, manufacturing a rotating shaft 4; the method comprises the following steps of blanking a raw material of a rotating shaft 4, turning and milling, then putting a rotor into the shaft, and sequentially performing processes of finish turning of the outer circle of the rotor, grinding of the outer circle of the shaft and correction of dynamic balance;
s3, manufacturing a base 1; sequentially carrying out the working procedures of turning a reference surface, drilling and tapping, finish turning, milling a bottom foot surface, milling a line door and drilling and tapping again on a casting of the base 1, and then pressing the casting into the base 1;
s4, manufacturing the rest parts; sequentially turning, drilling and supplying wires to an end cover casting, a bearing inner cover casting, a bearing outer cover casting, a junction box base casting and a junction box cover casting;
s5, front assembly; assembling the manufactured stator punching sheet, the rotating shaft 4, the base 1, the end cover, the bearing inner cover, the bearing outer cover, the junction box base and the junction box cover with a standard component to be installed;
s6, spray painting: attaching the assembled components to a junction box 18 and a junction box hopper, and performing surface painting;
s7, post assembling; adding functional parts to the parts after painting;
and S8, packaging and warehousing.
The stator punching sheet in the step S1 also needs to be subjected to the processes of laminating, wire embedding, wire connection, turn-to-turn experiments, voltage withstand experiments and insulation treatment of the stator core 2, and the base 1, the end cover, the bearing inner cover and the junction box 18 seat need to be subjected to a water pressure experiment before front assembly, in the step S5 in the embodiment, standard parts required by front assembly comprise an installation plate, bolts 19, screws, gaskets, sealing rings and the like, and functional parts required in assembly after the step S7 comprise fan blades, a fan cover, lifting rings, keys, shaft sleeves, nameplates and the like.
The names of the processes involved in this embodiment, such as finish turning of the outer circle of the rotor, grinding of the outer circle of the shaft, and correction of the dynamic balance, are well known in the art, and those skilled in the art can achieve the object of the present invention without detailed description of the specification.
Table 1 shows the efficiency values of the motor manufactured by the method of the present embodiment and its IE 4.
From table 1 it can be seen that the motor energy efficiency can be improved to the level of IE4 while ensuring the same housing and form factor.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a novel explosion-proof synchronous reluctance motor which characterized in that: the explosion-proof motor comprises a base (1), a stator core (2), a rotor core (3) and a rotating shaft (4), wherein a front end cover (5) and a rear end cover (6) are respectively arranged at the front end and the rear end of the base (1), an inner shell part (7) and a bearing chamber (8) are respectively arranged in the front end cover (5) and the rear end cover (6), one side of the bearing chamber (8) of the front end cover (5) and the rear end cover (6) is correspondingly provided with an inner bearing cover (9), a plane explosion-proof joint surface is formed between the inner shell part (7) of the front end cover (5) and the rear end cover (6) and the corresponding inner bearing cover (9), the rotating shaft (4) is installed in the base (1), the rotating shaft (4) penetrates through bearings in the bearing chambers (8) at the two sides, the rotor core (3) is sleeved on the rotating shaft (4), the stator core (2) is arranged at the periphery of the rotor, rotor core (3) are piled up by a plurality of rotor punching (10) and are formed, the center of rotor punching (10) is equipped with shaft hole (11), be equipped with connecting hole (12) around shaft hole (11), still be equipped with magnetic flux shielding group on rotor punching (10), magnetic flux shielding group uses shaft hole (11) to press circumferencial direction evenly distributed as the centre of a circle.
2. The novel explosion-proof synchronous reluctance motor according to claim 1, characterized in that: the magnetic flux barrier group comprises a first magnetic flux barrier (13), a second magnetic flux barrier (14) and a third magnetic flux barrier (15) which are arranged from inside to outside in the radial direction, and magnetic bridges (16) are arranged in the middle positions of the first magnetic flux barrier (13) and the second magnetic flux barrier (14).
3. The novel explosion-proof synchronous reluctance motor according to claim 1, characterized in that: one side of the inner shell part (7) is provided with a threaded blind hole (17), and the bearing inner cover (9) is provided with a threaded through hole corresponding to the threaded blind hole (17).
4. The novel explosion-proof synchronous reluctance motor according to claim 1, characterized in that: the machine base (1) is also connected with a junction box (18).
5. The novel explosion-proof synchronous reluctance motor according to claim 1, characterized in that: the rotor punching sheets (10) are connected through bolts (19).
6. The novel explosion-proof synchronous reluctance motor according to claim 2, characterized in that: the widths of the magnetic bridges (16) are communicated.
7. The manufacturing method of the novel explosion-proof synchronous reluctance motor is characterized by comprising the following steps of:
s1, manufacturing a stator punching sheet and a rotor punching sheet (10): blanking silicon steel sheets to respectively manufacture a stator punching sheet and a rotor punching sheet (10);
s2, manufacturing a rotating shaft (4); the method comprises the following steps of blanking raw materials of a rotating shaft (4), turning and milling, then putting a rotor into a shaft, and sequentially carrying out processes of finish turning of the outer circle of the rotor, grinding of the outer circle of the shaft and correction of dynamic balance;
s3, manufacturing a base (1); sequentially carrying out the working procedures of turning a reference surface, drilling and tapping, finish turning, milling a bottom foot surface, milling a line door and drilling and tapping again on a casting of the base (1), and then pressing the casting into the base (1);
s4, manufacturing the rest parts; sequentially turning, drilling and supplying wires to an end cover casting, a bearing inner cover casting, a bearing outer cover casting, a junction box base casting and a junction box cover casting;
s5, front assembly; assembling the manufactured stator punching sheet, the rotating shaft (4), the base (1), the end cover, the bearing inner cover (9), the bearing outer cover, the junction box base and the junction box cover with a standard component to be installed;
s6, spray painting: the assembled components are connected with a junction box (18) and a junction box hopper, and surface painting is carried out;
s7, post assembling; adding functional parts to the parts after painting;
and S8, packaging and warehousing.
8. The manufacturing method of the novel explosion-proof synchronous reluctance motor according to claim 7, wherein; the stator punching sheet in the step S1 needs to be subjected to the processes of stator core laminating, wire inserting, wire connecting, turn-to-turn experiment, voltage withstanding experiment and insulation treatment.
9. The manufacturing method of the novel explosion-proof synchronous reluctance motor according to claim 8, characterized in that: the base (1), the end cover, the bearing inner cover (9) and the junction box seat are required to be subjected to a hydraulic pressure experiment before being assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860493.1A CN111817481A (en) | 2020-08-25 | 2020-08-25 | Novel explosion-proof synchronous reluctance motor and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860493.1A CN111817481A (en) | 2020-08-25 | 2020-08-25 | Novel explosion-proof synchronous reluctance motor and manufacturing method thereof |
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| CN111817481A true CN111817481A (en) | 2020-10-23 |
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| CN202010860493.1A Pending CN111817481A (en) | 2020-08-25 | 2020-08-25 | Novel explosion-proof synchronous reluctance motor and manufacturing method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656658U (en) * | 2010-03-26 | 2010-11-24 | 钟祥市新宇机电制造有限公司 | Special flange type vibration motor for oil field |
| CN101924405A (en) * | 2009-06-17 | 2010-12-22 | 抚顺煤矿电机制造有限责任公司 | Explosion separation structure for shaft |
| CN201854123U (en) * | 2010-07-26 | 2011-06-01 | 宁夏西北骏马电机制造股份有限公司 | Oil-leakage prevention mechanical seal for bearing of explosion-proof motor |
| CN202759320U (en) * | 2012-08-14 | 2013-02-27 | 湘潭新昕通用电气有限公司 | Explosion-proof device for reluctance motor |
| CN104362824A (en) * | 2014-12-06 | 2015-02-18 | 南阳防爆集团股份有限公司 | Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor |
| CN110365140A (en) * | 2019-07-18 | 2019-10-22 | 哈尔滨理工大学 | A kind of synchronous magnetic resistance motor rotor |
-
2020
- 2020-08-25 CN CN202010860493.1A patent/CN111817481A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924405A (en) * | 2009-06-17 | 2010-12-22 | 抚顺煤矿电机制造有限责任公司 | Explosion separation structure for shaft |
| CN201656658U (en) * | 2010-03-26 | 2010-11-24 | 钟祥市新宇机电制造有限公司 | Special flange type vibration motor for oil field |
| CN201854123U (en) * | 2010-07-26 | 2011-06-01 | 宁夏西北骏马电机制造股份有限公司 | Oil-leakage prevention mechanical seal for bearing of explosion-proof motor |
| CN202759320U (en) * | 2012-08-14 | 2013-02-27 | 湘潭新昕通用电气有限公司 | Explosion-proof device for reluctance motor |
| CN104362824A (en) * | 2014-12-06 | 2015-02-18 | 南阳防爆集团股份有限公司 | Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor |
| CN110365140A (en) * | 2019-07-18 | 2019-10-22 | 哈尔滨理工大学 | A kind of synchronous magnetic resistance motor rotor |
Non-Patent Citations (1)
| Title |
|---|
| 哈尔滨电机制造学校主编: "《电机制造工艺学》", 31 May 1979, 北京：机械工业出版社 * |
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Application publication date: 20201023 |
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| RJ01 | Rejection of invention patent application after publication |