Vertical hydro-generator rotor magnetic pole support and magnetic pole supporting structure

Abstract

The invention relates to a vertical hydro-generator rotor magnetic pole support which comprises a central sleeve with a shaft hole formed in the middle and six supporting arms connected to the outer side of the central sleeve in a radial mode, and the six supporting arms are evenly distributed along the periphery of the central sleeve. The end, away from the center sleeve, of each supporting arm is provided with an arc-shaped face, a limiting boss is formed at one end of each arc-shaped face, a groove is formed in the other end of each arc-shaped face, a key groove is formed in the end face of the side, away from the center sleeve, of each supporting arm, and the key grooves are formed in the axis direction of the center sleeve and penetrate through the two ends of the center sleeve. On the premise that the supporting strength is guaranteed, the weight of the support can be effectively reduced, the magnet yoke punching sheet can be effectively fixed by arranging the limiting bosses and the grooves on the arc-shaped faces of the outer sides of the supporting arms, and through the structure of the six supporting arms, when the support rotates, the effect similar to a fan can be formed, heat is effectively dissipated, and the service life of the support is prolonged. The invention further provides a vertical hydro-generator rotor magnetic pole supporting structure.

Description

Technical Field

[0001] The invention relates to the technical field of hydro-generator structure design, and in particular to a vertical hydro-generator rotor magnetic pole bracket and a magnetic pole support structure. Background Art

[0002] A hydro-turbine generator is a generator that uses a turbine as the prime mover to convert water energy into electrical energy. It is the main power equipment for producing electricity in a hydropower station. The structural performance of a hydro-turbine generator plays a vital role in the safe, stable and efficient operation of a power station.

[0003] Structurally, the hydro-turbine generator is a salient pole three-phase synchronous generator, whose magnetic poles are hung on the outer ring of the rotor yoke and protrude outward. Since the speed of the hydro-turbine generator is low and it needs to generate industrial frequency electricity, the corresponding number of generator poles is large, so the salient pole type is relatively simple in terms of structural technology. There are many types of rotor yokes with magnetic poles, some of which are multi-layer pancake structures mounted on the shaft, and some are cast into a cylindrical shape and mounted on the shaft.

[0004] Since the hydro-turbine generator rotor has a large number of generator poles, the rotor yoke form of the above structure will make its overall weight larger, require higher support strength of the bracket, and have poor heat dissipation effect. Summary of the invention

[0005] Based on the above description, the present invention provides a vertical hydro-generator rotor pole support to solve the technical problems in the prior art.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A vertical hydro-turbine generator rotor magnetic pole support, comprising a central sleeve with an axial hole formed in the middle and six arms radially connected to the outer side of the central sleeve, wherein the six arms are evenly distributed along the outer periphery of the central sleeve; Each of the support arms has an arcuate surface at one end away from the center sleeve, a limiting boss is formed at one end of the arcuate surface and a groove is formed at the other end, a keyway is formed on the end surface of the support arm away from the center sleeve, and the keyway is arranged along the axial direction of the center sleeve and passes through the two ends.

[0007] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The pole bracket provided in the present application adopts a structural form of a center sleeve combined with a support arm. Under the premise of ensuring the supporting strength, the weight of the bracket can be effectively reduced. By providing a limiting boss and a groove on the outer arc surface of the support arm, the yoke punching sheet can be effectively fixed. Through the structure of six support arms, when the bracket rotates, a fan-like effect can be formed to effectively dissipate heat.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the support arm includes an arm body and a connecting portion, one end of the arm body is connected to the center sleeve, the connecting portion is connected to an end of the arm body away from the center sleeve, and the limiting boss, groove and keyway are all formed on the connecting portion.

[0010] Furthermore, reinforcing edges are formed at both ends and the middle of the arm body along the radial direction of the central sleeve.

[0011] Furthermore, ventilation holes are formed on the arm body and penetrate through the two side panels thereof.

[0012] Furthermore, the central sleeve and the support arm are integrally cast.

[0013] The present application also provides a vertical hydro-turbine generator rotor magnetic pole support structure, which includes the vertical hydro-turbine generator rotor magnetic pole support, and also includes a stopper, a first end plate, a yoke punching sheet, a second end plate, a tensioning assembly and a fastening key; The stopper is detachably mounted in the groove; The first end plate is an annular plate and is coaxially sleeved on the outer side of the magnetic pole bracket, and one side of the first end plate cooperates with the limiting boss to limit the position; The magnetic yoke punching sheet is an annular sheet and is coaxially sleeved on the outer side of the magnetic pole bracket; The second end plate is an annular plate and is coaxially sleeved on the outer side of the magnetic pole bracket, the magnetic yoke punching sheet is arranged between the first end plate and the second end plate, and the side of the second end plate away from the first end plate cooperates with the baffle to limit the position; The tensioning assembly is used to lock the first end plate, the yoke punching sheet and the second end plate into an integral yoke assembly; The fastening key is arranged in the keyway and is used to fix the yoke integral assembly on the pole support.

[0014] The above-mentioned support structure first installs the first end plate on the outer ring of the support arm, the first end plate is limited by the limiting boss, then the yoke punching sheets are stacked, and finally the upper end plate is installed, and the three are locked into an integral yoke assembly by the tightening assembly, and finally the integral yoke assembly and the bracket are wedged together by the fastening key, which can meet the support strength and effectively reduce the weight of the bracket. At the same time, when rotating, the six support arms are equivalent to fan blades, which have the effect of ventilation and heat dissipation.

[0015] Furthermore, the second end plate is formed with a second through hole corresponding to the first through hole, and the yoke punching sheet is formed with a tightening hole corresponding to the first through hole. The first through hole, the tightening hole and the second through hole together constitute a tightening channel. The tightening screw passes through the tightening channel, and the tightening bolt is fastened to both ends of the tightening screw. Furthermore, the first end plate includes an inner ring plate, an outer ring plate and a spacer block, the inner ring plate cooperates with the limiting boss to limit the position, the outer ring plate is arranged opposite to the inner ring plate, the spacer block is connected between the inner ring plate and the outer ring plate, and the tightening bolts close to the first end plate are in contact with the inner ring plate.

[0016] Furthermore, the fastening key is a pair of keys, which include a first key unit and a second key unit, the first key unit is inserted from one end of the key slot, and the second key unit is inserted from the other end of the key slot, the first key unit has a first wedge surface, and the second key unit has a second wedge surface, and the first wedge surface overlaps and contacts with the second wedge surface inside the key slot.

[0017] Furthermore, a side of the second end plate away from the first end plate is connected to a plurality of angle steel plates, and the angle steel plates are arranged along the radial direction of the second end plate and are evenly distributed around the central axis of the second end plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a rotor pole support of a vertical hydro-turbine generator provided in an embodiment of the present invention; Figure 2 It is a partially enlarged schematic diagram of a support arm according to an embodiment of the present invention; Figure 3 A schematic diagram of a half-section structure of a vertical hydro-generator rotor magnetic pole support structure provided in Example 2 of the present application; Figure 4 for Figure 3 A schematic structural diagram of a second end plate from a side perspective; Figure 5 This is a schematic diagram of the structure of the first end plate in the second embodiment of the present application; Figure 6 This is a schematic diagram of the structure of the fastening key in the second embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90° or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0022] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0023] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0024] Embodiment 1 like Figure 1 and Figure 2 As shown, an embodiment of the present application discloses a vertical hydro-turbine generator rotor pole support, which includes a central sleeve 10 with an axial hole formed in the middle and six arms 20 radially connected to the outside of the central sleeve 10, and the six arms 20 are evenly distributed along the outer circumference of the central sleeve 10.

[0025] Among them, each arm 20 has an arcuate surface at one end away from the center sleeve 10, a limiting boss 20a is formed at one end of the arcuate surface and a groove 20b is formed at the other end, and a keyway 20c is formed on the end surface of the arm 20 away from the center sleeve 10, and the keyway 20c is arranged along the axial direction of the center sleeve 10 and passes through both ends.

[0026] In an embodiment of the present application, the support arm 20 includes an arm body 21 and a connecting portion 22, one end of the arm body 21 is connected to the center sleeve 10, the connecting portion 22 is connected to the end of the arm body 21 away from the center sleeve 10, and the limiting boss 20a, the groove 20b and the keyway 23 are all formed in the connecting portion 22.

[0027] Among them, reinforcing edges 23 are formed at both ends and the middle of the arm body 21 along the radial direction of the central sleeve 10 . The design of the reinforcing edges 23 can enhance the supporting strength of the arm body 21 .

[0028] Preferably, the arm body 21 is formed with ventilation holes 21a penetrating the two side panels thereof. When the bracket rotates, the support arm 20 forms a function similar to fan blades. The design of the ventilation holes 21a can further enhance the heat dissipation effect and make the internal space between the support arms 20 connected.

[0029] In the embodiment of the present application, the central sleeve 10 and the support arm 20 are integrally cast.

[0030] The pole bracket provided in the present application adopts a structural form of a center sleeve 10 combined with a support arm 20. Under the premise of ensuring the supporting strength, the weight of the bracket can be effectively reduced. By providing a limiting boss 20a and a groove 20b on the outer arc surface of the support arm 20, the yoke punching sheet can be effectively fixed. Through the structure of six support arms 20, when the bracket rotates, a fan-like effect can be formed to effectively dissipate heat.

[0031] Embodiment 2 This embodiment provides a vertical hydro-turbine generator rotor magnetic pole support structure, such as Figure 3-6 As shown, it includes the vertical hydro-turbine generator rotor pole support 100 in the above embodiment, and also includes a stopper 200, a first end plate 300, a yoke punching sheet 400, a second end plate 500, a tensioning assembly 600 and a fastening key 700.

[0032] The stopper 200 is detachably installed in the groove 20b. The first end plate 300 is an annular plate and is coaxially sleeved on the outer side of the pole support 100 . One side of the first end plate 300 cooperates with the limiting boss 20 a to limit the position.

[0033] The yoke punching sheet 400 is an annular sheet and is coaxially sleeved on the outer side of the pole support 100 .

[0034] The second end plate 500 is an annular plate and is coaxially mounted on the outer side of the pole support 100. The yoke punching 400 is arranged between the first end plate 300 and the second end plate 500. The side of the second end plate 500 away from the first end plate 300 cooperates with the baffle 200 to limit the position.

[0035] The stopper 200 and the limiting boss 20a are respectively located at the two ends of the connecting portion 22, and can limit the yoke punching sheet 400 located on the pole bracket 100, ensuring that the first end plate 300, the yoke punching sheet 400, and the second end plate 500 are stably installed between the stopper 200 and the limiting boss 20a.

[0036] The tensioning assembly 600 is used to lock the first end plate 300, the yoke punching sheet 400 and the second end plate 500 into an integral yoke assembly, ensuring that all the yoke punching sheets 400 are tightly fitted together to form a stable annular column structure; The fastening key 700 is disposed in the key slot 20 c and is used to fix the yoke integral assembly on the pole support 100 .

[0037] The tensioning assembly 600 includes a tensioning screw 610 and a tensioning bolt 620. A first through hole is formed on the first end plate 300, a second through hole is formed on the second end plate 500 corresponding to the first through hole, and a tensioning hole is formed on the yoke punching sheet 400 corresponding to the first through hole. The first through hole, the tensioning hole and the second through hole together constitute a tensioning channel. The tensioning screw 610 passes through the tensioning channel, and the tensioning bolt 620 is fastened to both ends of the tensioning screw 610.

[0038] In an embodiment of the present application, the first end plate 300 includes an inner ring plate 310, an outer ring plate 320 and a spacer block 330. The inner ring plate 310 cooperates with the limiting boss 20a for limiting, the outer ring plate 320 is arranged opposite to the inner ring plate 310, the spacer block 330 is connected between the inner ring plate 310 and the outer ring plate 320, and the tightening bolt 620 close to the first end plate 300 is in contact with the inner ring plate 310.

[0039] Preferably, the fastening key 700 is a pair of keys, which include a first key unit 710 and a second key unit 720. The first key unit 710 is inserted from one end of the key slot 20c, and the second key unit 720 is inserted from the other end of the key slot 20c. The first key unit 710 has a first wedge surface 711, and the second key unit 720 has a second wedge surface 721. The first wedge surface 711 and the second wedge surface 721 overlap and contact each other inside the key slot. When the first key unit 710 and the second key unit 720 move inward, the first wedge surface 711 and the second wedge surface 721 contact each other, so that the key unit located at the upper part moves upward and radially presses against the yoke integral assembly, thereby fixing the yoke punching sheet 400 on the bracket.

[0040] More preferably, a plurality of angle steel plates 510 are connected to the side of the second end plate 500 away from the first end plate 300. The angle steel plates 510 are arranged radially along the second end plate 500 and are evenly distributed around the central axis of the second end plate 500. During the rotation process, the angle steel plates 510 can also effectively form fan blades to further enhance the heat dissipation effect.

[0041] In the above-mentioned support structure, the first end plate 300 is first installed on the outer ring of the support arm 20, the first end plate 300 is limited by the limiting boss 20a, and then the yoke punching sheet 400 is stacked, and finally the second end plate 500 is installed, and the three are locked into an integral yoke assembly by the tensioning assembly 600, and finally the integral yoke assembly and the bracket 100 are wedged by the fastening key 700, which can meet the support strength and effectively reduce the weight of the bracket. At the same time, when rotating, the six support arms 20 are equivalent to fan blades, which have the effect of ventilation and heat dissipation.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical hydro-turbine generator rotor pole support, characterized in that: It comprises a central sleeve with an axial hole formed in the middle and six arms radially connected to the outer side of the central sleeve, wherein the six arms are evenly distributed along the outer periphery of the central sleeve; Each of the support arms has an arcuate surface at one end away from the center sleeve, a limiting boss is formed at one end of the arcuate surface and a groove is formed at the other end, a keyway is formed on the end surface of the support arm away from the center sleeve, and the keyway is arranged along the axial direction of the center sleeve and passes through the two ends.

2. The vertical hydro-generator rotor pole support according to claim 1, characterized in that: The support arm includes an arm body and a connecting portion, one end of the arm body is connected to the center sleeve, the connecting portion is connected to an end of the arm body away from the center sleeve, and the limiting boss, groove and keyway are all formed on the connecting portion.

3. The vertical hydro-generator rotor pole support according to claim 2, characterized in that: Both ends and the middle of the arm body are formed with reinforcement edges along the radial direction of the central sleeve.

4. The vertical hydro-generator rotor pole support according to claim 2, characterized in that: The arm body is formed with ventilation holes penetrating through the two side panels thereof.

5. The vertical hydro-generator rotor pole support according to claim 1, characterized in that: The central sleeve and the support arm are integrally cast.

6. A vertical hydro-generator rotor magnetic pole support structure, characterized in that: The vertical hydro-turbine generator rotor magnetic pole support comprises a stopper, a first end plate, a yoke punching sheet, a second end plate, a tensioning assembly and a fastening key; The stopper is detachably mounted in the groove; The first end plate is an annular plate and is coaxially sleeved on the outer side of the magnetic pole bracket, and one side of the first end plate cooperates with the limiting boss to limit the position; The magnetic yoke punching sheet is an annular sheet and is coaxially sleeved on the outer side of the magnetic pole bracket; The second end plate is an annular plate and is coaxially sleeved on the outer side of the magnetic pole bracket, the magnetic yoke punching sheet is arranged between the first end plate and the second end plate, and the side of the second end plate away from the first end plate cooperates with the baffle to limit the position; The tensioning assembly is used to lock the first end plate, the yoke punching sheet and the second end plate into an integral yoke assembly; The fastening key is arranged in the keyway and is used to fix the yoke integral assembly on the pole support.

7. The vertical hydro-generator rotor magnetic pole support structure according to claim 6, characterized in that: The tensioning assembly includes a tensioning screw and a tensioning bolt, a first through hole is formed on the first end plate, a second through hole is formed on the second end plate corresponding to the first through hole, a tensioning hole is formed on the yoke punching sheet corresponding to the first through hole, the first through hole, the tensioning hole and the second through hole together constitute a tensioning channel, the tensioning screw passes through the tensioning channel, and the tensioning bolt is fastened to both ends of the tensioning screw.

8. The vertical hydro-generator rotor magnetic pole support structure according to claim 7, characterized in that: The first end plate includes an inner ring plate, an outer ring plate and a spacer block. The inner ring plate cooperates with the limiting boss to limit the position. The outer ring plate is arranged opposite to the inner ring plate. The spacer block is connected between the inner ring plate and the outer ring plate. The tightening bolts close to the first end plate are in contact with the inner ring plate.

9. The vertical hydro-generator rotor magnetic pole support structure according to claim 6, characterized in that: The fastening key is a pair of keys, which include a first key unit and a second key unit. The first key unit is inserted from one end of the key slot, and the second key unit is inserted from the other end of the key slot. The first key unit has a first wedge surface, and the second key unit has a second wedge surface. The first wedge surface overlaps and contacts with the second wedge surface inside the key slot.

10. The vertical hydro-generator rotor magnetic pole support structure according to claim 6, characterized in that: A side of the second end plate away from the first end plate is connected to a plurality of angle steel plates, and the angle steel plates are arranged along the radial direction of the second end plate and are evenly distributed around the central axis of the second end plate.

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