WO2023070180A1 - Conexão calandrada e máquina elétrica girante - Google Patents
Conexão calandrada e máquina elétrica girante Download PDFInfo
- Publication number
- WO2023070180A1 WO2023070180A1 PCT/BR2021/050475 BR2021050475W WO2023070180A1 WO 2023070180 A1 WO2023070180 A1 WO 2023070180A1 BR 2021050475 W BR2021050475 W BR 2021050475W WO 2023070180 A1 WO2023070180 A1 WO 2023070180A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connection
- calendered
- flange
- present
- attached
- Prior art date
Links
- 238000003490 calendering Methods 0.000 title claims abstract description 65
- 238000009826 distribution Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
- H02K15/14—Casings; Enclosures; Supports
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/26—Means for adjusting casings relative to their supports
Definitions
- the present invention is part of the field of technologies related to the connection between the frame and the flange in vertical electrical machines , more specifically , the present invention applies to the calendered connection between the frame and the flange for vertical flanged frames .
- rotating electrical machines refer to machines designed to transform electrical energy into mechanical energy . These equipment include, for example, generators and electric motors.
- connection between the frame and the flange in vertical electrical machines is carried out by means of the machine 's own stringers , which are elongated to the flange , or even by means of segments of polygonal plates welded to the frame structure .
- the present invention aims to solve the aforementioned problems by providing a cylindrical or conical calendered connection between the housing and the flange, for vertical flanged housings, which promotes better drilling interchangeability, increased structural rigidity and simplicity in construction , compared to those existing in the state of the art.
- the patent document EP 3 639 717 A2 describes a fan motor comprising a motor support, a motor part accommodated in an internal space of the motor support and an impeller arranged above the motor support.
- the engine mount defines: an air discharge opening configured to discharge the impeller's discharged air for an external space of the motor support; a cooling flow path outlet disposed on the upper side of the motor support at a position between the impeller and the air discharge opening; and a first cooling flow path inlet disposed at a position below the air discharge opening and the cooling flow path outlet.
- the document therefore relates to a fan motor with an integrated motor and fan, and more particularly to a fan motor structure capable of increasing the power of a motor and cooling the motor smoothly while reducing size and weight. of the fan motor.
- the document presents openings for the discharge of the air flow and concerns the machine's ventilation circuit, therefore not providing a solution to the problems associated with the interchangeability of the machine's attachment.
- the patent document WO 2017/194522 refers to a stator structure of an electrical machine having a first end and an opposite second end. A flange projects from the first end and surrounds the first end.
- the stator frame having cooling fluid channels and cooling fins on the outer surface of the stator frame extending from the first end to the second end.
- the stator structure is formed as a single piece. The ends of the outer walls of the coolant channels at the first end are connected to the flange and the cooling fins extend to the joint of the flange and the first end.
- the mentioned document presents fluid channels or fins for cooling on the surface of the housing and teaches about an integral housing made of cast iron, making the construction of the structure more complex.
- Document CN 204156639 U describes a utility model that provides a type of console mode electric machine support and the motor is separated from the reducer by this console mode electric machine support .
- the motor is connected to a support by means of screws, and in turn, connected to the reducer in a non-rigid way.
- the engine mount is welded and bolted to the main frame.
- the motor and reducer are completely isolated from the structure, reducing the transmission of vibration to the machines.
- the document attributes the increase in rigidity and reduction of vibration to the way in which the support is attached to the structure, and not to the shape of the support.
- slits made in the structure of the document are for inspection or centering adjustment.
- US patent document 3, 617, 784 discloses an electric motor having a stationary part formed with an annular groove and which is mounted on a member in an opening therein.
- the member in the aperture has an inner edge that includes an inwardly extending portion between a pair of elastomeric O-rings disposed at the bottom of the groove.
- the inner edge of the slotted member functions to hold the O-rings in frictional engagement with the engine part.
- Each of the O-rings in such frictional engagement with the engine part presses against each other with each of the O-rings resting on a different one of the axially spaced shoulders of the groove in sealing engagement therewith. That document discusses the use of the two O-rings mounted on a recess in the motor housing.
- the present invention is part of the field of technologies related to the connection between the frame and the flange in vertical electrical machines , more specifically , the present invention applies to the calendered cylindrical or conical connection between the frame and the flange for frames vertical flanges.
- the invention deals with a conical or cylindrical calendered connection arranged between the housing and the flange for vertical flanged housings that promotes: the interchangeability of the drilling means, the increase of the torsional rigidity of the structure, in order to withstand high loads at the base , and the simplicity of construction , by providing a calendered component formed by one or more strips of plates welded to the structure .
- a calendered connection comprising : an upper end ; a lower end; and at least one aperture; the upper end being attached to the lower portion of a housing and the lower end being attached to a flange surrounding the lower end.
- Figure 1 shows a three-dimensional perspective view of an electrical machine, according to an application example of the present invention.
- Figure 2 also shows a three-dimensional perspective view of an electrical machine, according to an application example of the present invention.
- Figure 3 also shows an enlarged three-dimensional perspective view of an electrical machine section with emphasis on a conical calendered connection, according to a preferred configuration of the present invention.
- Figure 4 shows a bottom view in three-dimensional perspective of an electrical machine section, according to a preferred configuration of the present invention.
- Figure 5 shows a front view of an electrical machine with straight calendered connection, according to an application example of the present invention.
- Figure 6 shows a front view of an electrical machine with conical calendered connection, according to another application example of the present invention.
- Figure 7 shows a configuration for use of the calendered connection and its respective plan view, according to an application example of the present invention.
- Figure 8A shows a three-dimensional view of an electrical machine with emphasis on a conical calendered connection, according to a preferred configuration of the present invention.
- Figure 8B shows an enlarged detail of the conical calendered connection, according to a configuration preference of the present invention.
- the present invention is applied in the area of connections between frame and flange in vertical electrical machines, more specifically, the present invention refers to a cylindrical or conical calendered connection 300 between frame 200 and flange 400 in vertical rotating electrical machines 100, as illustrated in Figure 1 of the present application, in accordance with a preferred embodiment of the present invention.
- connections between frames and flanges in vertical rotating electrical machines are carried out by using the motor's own stringers elongated to the flange, or by means of segments of polygonal plates welded to the frame structure.
- These types of connections generate problems related to the interchangeability of the fastening means between the already existing bases and the rotating electrical machines due to the disposition of the stringers of the referred connections.
- another identified problem concerns the insufficient rigidity given to the structure when using connections already known from the state of the art, which is observed by the high deflection at the base of the flanges.
- another problem concerns the complexity and cost of building these connections (use of several plates and individualized welding) .
- the present invention proposes a solution that provides greater interchangeability of the drilling means, increased rigidity structural and simplicity in construction by means of a calendered connection 300, comprising: an upper end 310; a lower end 320; and at least one opening 330; the upper end 310 being attached to the lower portion 210 of a housing 200 and the lower end 320 being attached to a flange 400 surrounding the lower end 320.
- FIG. 3 an enlarged section of vertical electric machine 100 is illustrated .
- Said enlarged section includes a calendered connection 300 arranged between a vertical housing 200 and a flange 400.
- the calendered connection 300 comprising an upper end 310 that is attached to the lower portion of the housing 210, and a lower end 320 that is attached to the flange 400.
- the flange 400 surrounding the lower end 320 of the calendered connection 300 .
- the upper ends 310 and lower 320 are , preferably , substantially circular profiles , and are used for electrical machines and interfaces with the most varied dimensions . Therefore, it will be appreciated by one skilled in the art that the diameters of the upper 310 and lower 320 ends of the calendered connection 300 can vary according to the desired application.
- the calendered connection 300 is preferably a cone-shaped, or conical, calendered connection, with the lower end 320 extending outwards relative to the central axis of the connection calendered 300.
- the cone works like a tube, ensuring high torsional and compressive rigidity.
- the use of the cone makes it possible to bring the line of holes 410 closer to the base of the cone, which also contributes to greater rigidity of the flange 400 and of the entire structure associated with the electrical machine.
- the cone is inclined in relation to the horizontal plane between 90° and 30° degrees.
- the rigidity of the connection must be suitable for each project.
- the cone-shaped calendered connection may also have an inverted configuration, with the upper end diameter 310 greater than the lower end diameter 320.
- the calendered connection 300 is a cylindrical calendered connection, or straight, as can be seen in Figure 5.
- the calendered connection 300 has a height between about 50 mm and 600 mm.
- such values are not limiting, since the calendered connection 300 can be manufactured to be used in different models and frame sizes of electrical machines.
- the upper end 310 of the calendered connection 300 is attached to the lower portion 210 of the frame 200 by means of screws, rivets, welding, or any other appropriate means of attachment.
- the lower end 320 of the calendered connection 300 is attached to the flange 400 also by means of screws , rivets , solder or any other suitable means of fastening .
- the calendered connection 300 of the present invention also has openings 330, or slots, on the holes 410 of the flange 400 to allow access and proper tightening of the fastening screws of the electrical machine, or any other type of fastening means used .
- the openings 330 are preferably positioned at the lower end 320 of the calendered connection 300, in order to allow access to the means used for tightening the used fastening screws.
- the calendered connection 300 has at least one opening 330 .
- the at least one aperture 330 may be square, rectangular, circular, substantially polygonal, or any other geometric shape applicable to design specifics.
- the at least one aperture 330 is substantially polygonal in shape.
- the calendered connection can be formed from one of the following materials: steel, cast iron, among others.
- the calendered connection 300 can be designed so that the at least one opening 330 of the calendered connection 300 is arranged over at least one fixing hole 410 of the flange 400.
- one of the features of the present invention is associated with the interchangeability of holes and the fact that the number of openings 330 in the calendered connection 300 varies according to the number and distribution of fixing holes 410 of the flange 400.
- the number of openings 330 in the calendered connection 300 varies in relation to the number of fixing holes 410 in the flange 400 in one of the following proportions: 1:1, 1:2, 1:3.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180103869.7A CN118369838A (zh) | 2021-10-29 | 2021-10-29 | 压延连接件和旋转电机 |
PCT/BR2021/050475 WO2023070180A1 (pt) | 2021-10-29 | 2021-10-29 | Conexão calandrada e máquina elétrica girante |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/BR2021/050475 WO2023070180A1 (pt) | 2021-10-29 | 2021-10-29 | Conexão calandrada e máquina elétrica girante |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023070180A1 true WO2023070180A1 (pt) | 2023-05-04 |
Family
ID=86160244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2021/050475 WO2023070180A1 (pt) | 2021-10-29 | 2021-10-29 | Conexão calandrada e máquina elétrica girante |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN118369838A (pt) |
WO (1) | WO2023070180A1 (pt) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8424186B2 (en) * | 2008-07-30 | 2013-04-23 | Robert Bosch Gmbh | Method for manufacturing an electric machine by a lost foam casting process, and electric machine for a hybrid vehicle |
WO2016195148A1 (ko) * | 2015-06-05 | 2016-12-08 | 엘지전자 주식회사 | 전동기용 케이스 및 그의 제조방법, 전동기용 케이스를 구비한 전동기 |
US10361603B2 (en) * | 2013-12-16 | 2019-07-23 | Mitsubishi Electric Corporation | Mechanically and electrically integrated driving apparatus and manufacturing method therefor |
-
2021
- 2021-10-29 CN CN202180103869.7A patent/CN118369838A/zh active Pending
- 2021-10-29 WO PCT/BR2021/050475 patent/WO2023070180A1/pt active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8424186B2 (en) * | 2008-07-30 | 2013-04-23 | Robert Bosch Gmbh | Method for manufacturing an electric machine by a lost foam casting process, and electric machine for a hybrid vehicle |
US10361603B2 (en) * | 2013-12-16 | 2019-07-23 | Mitsubishi Electric Corporation | Mechanically and electrically integrated driving apparatus and manufacturing method therefor |
WO2016195148A1 (ko) * | 2015-06-05 | 2016-12-08 | 엘지전자 주식회사 | 전동기용 케이스 및 그의 제조방법, 전동기용 케이스를 구비한 전동기 |
Also Published As
Publication number | Publication date |
---|---|
CN118369838A (zh) | 2024-07-19 |
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