CN111864953A - Variable-speed pumped storage generator set rotor winding end fixing structure - Google Patents
Variable-speed pumped storage generator set rotor winding end fixing structure Download PDFInfo
- Publication number
- CN111864953A CN111864953A CN202010736616.0A CN202010736616A CN111864953A CN 111864953 A CN111864953 A CN 111864953A CN 202010736616 A CN202010736616 A CN 202010736616A CN 111864953 A CN111864953 A CN 111864953A
- Authority
- CN
- China
- Prior art keywords
- insulation box
- rotor winding
- generator set
- speed pumped
- storage generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/51—Fastening of winding heads, equalising connectors, or connections thereto applicable to rotors only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
A variable-speed pumped storage generator set rotor winding end fixing structure belongs to the technical field of generator accessories. The invention solves the problem that the radial centrifugal force of the rotor winding of the existing pumped storage generator is very large. The rotor support ring plate comprises a U-shaped screw, an insulation box limiting plate, an insulation box, a rotor support ring plate and a fixing piece, wherein the insulation box limiting plate is arranged on the upper portion of the insulation box, the U-shaped screw penetrates through the insulation box limiting plate and the insulation box, the top end of the U-shaped screw penetrates through the inner side of the rotor support ring plate, the fixing piece is sleeved at the top end of the U-shaped screw, one end of the fixing piece is connected with the inner side of the rotor support ring plate, and a nut is arranged at the other end of. The centrifugal force generated during rotation is transmitted to the rotor support ring plate through the U-shaped screws, each U-shaped screw bears the centrifugal force of a half total structure, and after the end fixing structure is used, the end of a rotor winding is more stable and reliable when the rotor rotates.
Description
Technical Field
The invention relates to a variable-speed pumped storage generator set rotor winding end fixing structure, and belongs to the technical field of generator accessories.
Background
In the power industry, a variable-speed constant-frequency power generation technology is adopted, so that the stability of a power generation system can be improved, and the system efficiency can be improved. The variable-speed pumped storage generator set can adapt to the change of the rotating speed of the generator by changing the frequency of the exciting current, so that the variable-speed pumped storage generator set is matched with the optimal rotating speed of a prime motor, the efficiency of the generator set is improved, the static and transient stability of a power system is obviously improved, and the variable-speed pumped storage generator set is a necessary tool for power system management after a power grid is developed to a certain stage. The structure of the variable-speed-draw-number continuous energy generator set is different from that of a conventional pumped storage unit, a rotor adopts a hidden-level mechanism, a rotor core is formed by a rotor winding, a rotor punching sheet and other components, wherein the rotor winding is a double-layer strip type wave winding, and is connected with a three-phase alternating current excitation system through a collecting ring device and an electric brush to form a rotating magnetic field relative to the rotor. Because the rotor winding is subjected to a large radial centrifugal force during operation, the fixation of the winding end becomes a key technology of the variable-speed pumped storage generator motor.
In summary, a structure for fixing the winding end of the rotor of the variable-speed pumped storage generator set is needed to meet the requirement for fixing the winding end of the variable-speed pumped storage generator set.
Disclosure of Invention
The invention discloses a variable-speed pumped storage generator set rotor winding end fixing structure which is used for meeting the requirement of variable-speed pumped storage generator set winding end fixing. The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
the utility model provides a variable speed pumped storage generating set rotor winding tip fixed knot constructs, including U type screw rod, insulating box limiting plate, insulating box, rotor support crown plate and mounting insulating box limiting plate is installed on insulating box upper portion, and insulating box limiting plate and insulating box are passed to U type screw rod, and the inboard of rotor support crown plate is passed on the top of U type screw rod, and the mounting suit is on the top of U type screw rod, and the one end of mounting is connected with the inboard of rotor support crown plate, and the nut is installed to the other end of mounting.
Furthermore, a stop washer is sleeved on the U-shaped bolt and is installed between the fixing piece and the nut.
Further, the stop washer is a single-lug stop washer or a double-lug stop washer.
Furthermore, the insulation box comprises a wire rod and a wedge plate, the wire rod is installed in the insulation box, the wedge plate is installed on the inner wall of the insulation box, and the wire rod is connected with the wedge plate.
Furthermore, the structure of the insulation box is a three-groove conjoined structure.
Furthermore, a groove is processed on the end face of the fixing piece, and the annular plate of the rotor support is arranged in the groove of the fixing piece.
The invention has the beneficial effects that:
the end part of the rotor winding of the variable-speed pumped storage generator is fixed with an insulation box, a U-shaped screw rod, an insulation box limiting plate and other parts, the outer diameter of the rotor of the variable-speed pumped storage generator is larger, the rotating speed is higher than that of a conventional pumped storage unit, so the fixing requirement on a coil rod is also higher, after the fixing structure of the invention is adopted, the integral mechanism is more reliable, wherein the insulation box adopts a three-groove conjoined structure, the centrifugal force generated by the coil rod in three grooves is transmitted to the insulation box limiting plate through the insulation box, the insulation box limiting plate is made of metal materials, compared with the insulation box made of insulation materials, the mechanical property is better, the insulation box can bear larger centrifugal force, after the insulation box and the insulation box limiting plate are assembled and then inserted into the U-shaped screw rod, the insulation box limiting plate is integrally connected to the rotor support ring plate through the U-shaped screw rod, and the centrifugal force generated during rotation, the U-shaped screws are made of high-strength alloy steel materials, each U-shaped screw bears the centrifugal force of a half total structure, and after the end fixing structure is used, the winding end of the rotor is more stable and reliable when the rotor rotates.
Drawings
FIG. 1 is a front view of a variable speed pumped storage generator set rotor winding end fixing structure;
FIG. 2 is a sectional view taken along line A of FIG. 1;
FIG. 3 is a schematic diagram of an insulation box limiting plate of a variable-speed pumped storage generator set rotor winding end fixing structure;
fig. 4 is a schematic view of the internal structure of the insulating case.
In the figure, 1-U-shaped screw rod, 2-insulation box limiting plate, 3-insulation box, 4-rotor support ring plate, 5-fixing piece, 6-nut, 7-stop washer, 8-wedge plate and 9-wire rod.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, which is illustrated in the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to fig. 3, and the variable-speed pumped storage generator set rotor winding end fixing structure of the embodiment includes a U-shaped screw 1, an insulation box limiting plate 2, an insulation box 3, a rotor support ring plate 4 and a fixing member 5, wherein the insulation box limiting plate 2 is installed on the upper portion of the insulation box 3, the U-shaped screw 1 passes through the insulation box limiting plate 2 and the insulation box 3, the top end of the U-shaped screw 1 passes through the inner side of the rotor support ring plate 4, the fixing member 5 is sleeved on the top end of the U-shaped screw 1, one end of the fixing member 5 is connected with the inner side of the rotor support ring plate 4, and a nut 6 is installed at the other end of the. The insulation box 3 is connected with the rotor support ring plate 4 through the U-shaped screw rods 1, the insulation box limiting plates 2 are made of metal materials and can bear larger centrifugal force, the U-shaped screw rods 1 are made of high-strength alloy steel materials, each U-shaped screw rod 1 bears the centrifugal force of a half total structure, and after the end fixing structure is used, the end part of a rotor winding is more stable and reliable when the rotor rotates.
The second embodiment is as follows: the embodiment is described with reference to fig. 1 to fig. 3, and the variable speed pumped storage generator set rotor winding end fixing structure of the embodiment is characterized in that a brake washer 7 is sleeved on the U-shaped bolt 1, and the brake washer 7 is installed between the fixing piece 5 and the nut 6. With this arrangement, the lock washer 7 is used in cooperation with the nut 6 to prevent the nut 6 from loosening.
The third concrete implementation mode: the embodiment is described with reference to fig. 1 to fig. 3, and the stop washer 7 of the variable speed pumped storage generator set rotor winding end fixing structure of the embodiment is a single-lug stop washer or a double-lug stop washer; when in use, the single-lug stop washer or the double-lug stop washer can be selected according to the nut 6 and the requirement of the nut.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1-3, and the variable-speed pumped-storage generator set rotor winding end fixing structure of the embodiment comprises an insulating box 3 and a wedge plate 8, wherein the insulating box 3 comprises a bar 9 and the wedge plate 8, the bar 9 is installed inside the insulating box 3, the wedge plate 8 is installed on the inner wall of the insulating plate 3, and the bar 9 is connected with the wedge plate 8. So set up, fix line stick 9 inside insulating box 3 through carving board 8, because variable speed pumped storage generating set rotor external diameter is great, and the rotational speed is higher than conventional pumped storage generating set, and the fixed requirement to line stick 9 is just higher, and after carving board 8 fixed line stick 9, it is more firm to make its overall structure.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1 to fig. 3, and the insulation box 3 of the variable-speed pumped storage generator set rotor winding end fixing structure of the embodiment is of a three-slot conjoined structure. The centrifugal force generated by the bars 9 in the three slots of the insulating case 3 is transmitted to the insulating case restriction plate 2 through the insulating case 3.
The sixth specific implementation mode: the embodiment is described with reference to fig. 1 to fig. 3, and the variable speed pumped storage generator set rotor winding end fixing structure of the embodiment has a groove machined in a cross section of the fixing member 5, and the rotor bracket ring plate 4 is installed in the groove of the fixing member 5. So set up, prevent that mounting 5 from taking place axial float.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (6)
1. The utility model provides a variable speed pumped storage generating set rotor winding tip fixed knot constructs which characterized in that: including U type screw rod (1), insulating box limiting plate (2), insulating box (3), rotor support crown plate (4) and mounting (5), install on insulating box (3) upper portion insulating box limiting plate (2), insulating box limiting plate (2) and insulating box (3) are passed in U type screw rod (1), and the inboard of rotor support crown plate (4) is passed in U type screw rod (1), and mounting (5) suit is on U type screw rod (1), and the inboard contact of the upper end of mounting (5) and rotor support crown plate (4), nut (6) are installed to the tip of U type screw rod (1).
2. The variable speed pumped-storage generator set rotor winding end fixing structure of claim 1, wherein: a stop washer (7) is sleeved on the U-shaped bolt (1), and the stop washer (7) is installed between the fixing piece (5) and the nut (6).
3. The variable speed pumped-storage generator set rotor winding end fixing structure of claim 2, wherein: the stop washer (7) is a single-lug stop washer or a double-lug stop washer.
4. The variable speed pumped-storage generator set rotor winding end fixing structure of claim 1, wherein: the insulation box (3) comprises a line rod (9) and a wedge plate (8), the line rod (9) is installed inside the insulation box (3), the wedge plate (8) is installed on the inner wall of the insulation box (3), and the line rod (9) is connected with the wedge plate (8).
5. The variable speed pumped-storage generator set rotor winding end fixing structure of claim 4, wherein: the structure of the insulation box (3) is a three-groove conjoined structure.
6. The variable speed pumped-storage generator set rotor winding end fixing structure of claim 1, wherein: a groove is processed on the end face of the fixing piece (5), and the rotor support ring plate (4) is installed in the groove of the fixing piece (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010736616.0A CN111864953A (en) | 2020-07-28 | 2020-07-28 | Variable-speed pumped storage generator set rotor winding end fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010736616.0A CN111864953A (en) | 2020-07-28 | 2020-07-28 | Variable-speed pumped storage generator set rotor winding end fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111864953A true CN111864953A (en) | 2020-10-30 |
Family
ID=72948345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010736616.0A Pending CN111864953A (en) | 2020-07-28 | 2020-07-28 | Variable-speed pumped storage generator set rotor winding end fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111864953A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567107A (en) * | 2022-02-21 | 2022-05-31 | 中国科学院电工研究所 | Fixing device for rotor winding end part of variable-speed generator motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218715A (en) * | 2014-10-10 | 2014-12-17 | 哈尔滨电机厂有限责任公司 | Double-pressing plate fixing structure for end part of rotor winding of large-scale alternating current excitation generator motor |
| CN105958694A (en) * | 2016-05-16 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Variable-speed pumped storage generator motor rotor winding end socket insulating box fixing structure |
| CN105975716A (en) * | 2016-05-24 | 2016-09-28 | 哈尔滨理工大学 | Method for designing variable speed pumped storage motor with double speed regulation mechanisms |
| CN207968105U (en) * | 2018-04-10 | 2018-10-12 | 哈尔滨电机厂有限责任公司 | Variable-ratio pumped-storage power generation rotor core compressing structure |
| CN209434998U (en) * | 2019-04-12 | 2019-09-24 | 哈尔滨电机厂有限责任公司 | A kind of stator bar end support structure of turbine-generator units |
-
2020
- 2020-07-28 CN CN202010736616.0A patent/CN111864953A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218715A (en) * | 2014-10-10 | 2014-12-17 | 哈尔滨电机厂有限责任公司 | Double-pressing plate fixing structure for end part of rotor winding of large-scale alternating current excitation generator motor |
| CN105958694A (en) * | 2016-05-16 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Variable-speed pumped storage generator motor rotor winding end socket insulating box fixing structure |
| CN105975716A (en) * | 2016-05-24 | 2016-09-28 | 哈尔滨理工大学 | Method for designing variable speed pumped storage motor with double speed regulation mechanisms |
| CN207968105U (en) * | 2018-04-10 | 2018-10-12 | 哈尔滨电机厂有限责任公司 | Variable-ratio pumped-storage power generation rotor core compressing structure |
| CN209434998U (en) * | 2019-04-12 | 2019-09-24 | 哈尔滨电机厂有限责任公司 | A kind of stator bar end support structure of turbine-generator units |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567107A (en) * | 2022-02-21 | 2022-05-31 | 中国科学院电工研究所 | Fixing device for rotor winding end part of variable-speed generator motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Latoufis et al. | Axial flux permanent magnet generator design for low cost manufacturing of small wind turbines | |
| Muljadi et al. | Cogging torque reduction in a permanent magnet wind turbine generator | |
| Ahsanullah et al. | Review of PM generator designs for direct-drive wind turbines | |
| Uzhegov et al. | Loss minimization in high-speed permanent magnet synchronous machines with tooth-coil windings | |
| CN110601479B (en) | Double-rotor induction wind driven generator and working method thereof | |
| Uzhegov et al. | Design of 6-slot 2-pole high-speed permanent magnet synchronous machines with tooth-coil windings | |
| CN111864953A (en) | Variable-speed pumped storage generator set rotor winding end fixing structure | |
| CN103855890A (en) | Outer rotor type driving motor of main coolant pump | |
| Cheng et al. | Study on the design method of high speed permanent magnet synchronous machine | |
| Arafat et al. | Design and performance analysis of a modified outer rotor permanent magnet alternator for low-speed wind turbine | |
| CN206712637U (en) | Double shaft-extension asynchronous starting permanent magnet synchronous motor | |
| Aleksashkin et al. | Literature review on permanent magnet generators design and dynamic behavior | |
| Lv et al. | Design and Performance Analysis of High-Speed Cryogenic Permanent Magnet Synchronous Motor | |
| CN112003437B (en) | Composite structure wind driven generator and power generation system | |
| Hatziargyriou | Design aspects of coreless axial flux permanent magnet generators for low cost small wind turbine applications | |
| CN208707438U (en) | A kind of high sealed motor of low noise | |
| CN112803631A (en) | Polar slot matching method applied to high-capacity offshore high-temperature superconducting fan | |
| CN202094757U (en) | Connection structure for rare earth permanent magnetic coreless generator and diesel engine | |
| Jin et al. | Preliminary design of a TORUS type axial flux generator for direct-driven tidal current turbine | |
| CN219592177U (en) | Permanent magnet synchronous submersible motor | |
| CN213574598U (en) | Brushless double-fed motor for oil field screw pump | |
| Arish et al. | Comparative Analysis of PM and Non-PM Design Options for Small-Scale Wind Generators | |
| Lebsir et al. | Switched reluctance generator models for wind turbine systems | |
| Zhang et al. | Performance analysis of doubly excited brushless generator with outer rotor for wind power application | |
| Wang et al. | Design and Operation of Low Speed and Direct Drive of Single-Phase Generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |