CN211715512U - Turbo generator rotor conducting screw structure - Google Patents
Turbo generator rotor conducting screw structure Download PDFInfo
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- CN211715512U CN211715512U CN201921991530.1U CN201921991530U CN211715512U CN 211715512 U CN211715512 U CN 211715512U CN 201921991530 U CN201921991530 U CN 201921991530U CN 211715512 U CN211715512 U CN 211715512U
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Abstract
The utility model discloses a turbo generator rotor conductive screw structure, electric conductor in rotor conductive screw, J type lead wire, dextrorotation nut, levogyration nut, gasket and rotor shaft, in rotor conductive screw's the interior electric conductor of lower extreme screw in rotor shaft, rotor winding J type lead wire is connected with rotor conductive screw's upper end, fastens through dextrorotation nut, rethread levogyration nut locking dextrorotation nut. The utility model overcomes the defects of the traditional turbine generator rotor conductive screw connection structure, and can effectively enhance the vibration and loosening resistance of the connection structure; meanwhile, the conductive reliability is enhanced, the conductor heating condition caused by resistance change can be effectively relieved, and the safety of equipment is protected.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment, concretely relates to turbo generator rotor conductive screw structure.
Background
In the prior art, as shown in fig. 1, firstly, an electric conductor in a rotor shaft of a steam turbine generator is screwed with the lower end of an old conductive screw, then a high-strength bolt is used to penetrate through a gasket and a connecting hole of a winding J-shaped lead, and then an internal thread at the upper end of the old conductive screw is screwed in to fasten the rotor winding J-shaped lead and the old conductive screw to form a current channel.
When the turbonator normally runs, the rotating speed is up to 3000rpm, and because the connecting point of the existing old conductive screw and the J-shaped lead of the rotor winding is positioned at the edge of the rotating structure of the whole turbonator, the following risks exist:
(1) when the generator normally operates and starts or stops, the high-strength bolt connected to the upper part can bear larger centrifugal force, vibration and variable load impact, so that vibration and loosening are caused. The traditional bolt and gasket structure has poor vibration and loosening resistance in a non-static environment.
(2) After the high-strength bolt connected to the upper part is loosened, even if the wire withdrawing condition is not very serious, the connection between the surface of the old conductive screw and the J-shaped lead wire of the winding can be separated under the action of strong centrifugal force. This results in a doubling of the contact resistance of the connection points, and the temperature rises severely when a large current is passed, jeopardizing the safety of the equipment.
The equipment failure caused by the connection looseness of the old conductive screw of the steam turbine generator and the J-shaped lead wire of the winding occurs for a long time. Therefore, a new type of turbine generator rotor conductive screw structure which can effectively resist vibration and loosening and has reliable conductive capability needs to be provided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the risk that above-mentioned traditional old-fashioned conductive screw structure and connection method exist, the utility model provides a novel turbo generator rotor conductive screw structure has stronger anti-vibration and loose ability and has more reliable electric conductivity.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a turbo generator rotor conductive screw structure, includes rotor shaft internal conductor, characterized by, still includes rotor conductive screw, J type lead wire, right-handed nut, left-handed nut and gasket, rotor conductive screw's lower extreme screw in is to rotor shaft internal conductor, rotor conductive screw's upper end is reducing structure, J type lead wire is through its connecting hole suit in reducing structure's bottom, the gasket suit is in J type lead wire's top, in J type lead wire's top reducing structure's surface is provided with bispin to discontinuous compound external screw thread (Tang's screw thread), right-handed nut and left-handed nut respectively with bispin is to discontinuous compound screw-thread fit, right-handed nut and left-handed nut are installed in proper order on reducing structure.
Furthermore, the right-handed nut is in contact with the left-handed nut, and the top end of the diameter-changing structure is higher than the top end of the left-handed nut.
Furthermore, the rotor conductive screw and the J-shaped lead are both made of copper alloy.
Compared with the prior art, the utility model, have following advantage and effect:
(1) because the rotor conductive screw adopts the Down's screw thread, the right-handed nut and the left-handed nut form a structural anti-loosening form, and the anti-vibration loosening capability can be effectively enhanced.
(2) The rotor conductive screw and the J-shaped lead are made of copper alloy materials and have high conductivity, the rotor conductive screw and the J-shaped lead are directly connected in a penetrating and sleeving mode, the conductive reliability is enhanced, even if the nut is loosened by vibration, the heating condition of a conductor caused by resistance change can be effectively relieved, and the safety of equipment is protected.
Drawings
Fig. 1 is a schematic structural diagram of a conventional old conductive screw and a connection method.
Fig. 2 is a schematic structural view of a rotor conductive screw and a connection method according to an embodiment of the present invention.
In the figure: the rotor comprises a rotor conductive screw 1, a J-shaped lead 2, a right-handed nut 3, a left-handed nut 4, a gasket 5, a rotor shaft inner conductor 6 and a reducing structure 7.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 2, a turbo generator rotor conductive screw structure comprises a rotor conductive screw 1, a J-shaped lead 2, a right-handed nut 3, a left-handed nut 4, a gasket 5 and a rotor shaft inner conductor 6, wherein the lower end of the rotor conductive screw 1 is screwed into the rotor shaft inner conductor 6, the upper end of the rotor conductive screw 1 is a variable diameter structure 7, the J-shaped lead 2 is sleeved at the bottom end of the variable diameter structure 7 through a connecting hole thereof, the gasket 5 is sleeved above the J-shaped lead 2, a double-handed discontinuous composite external thread is arranged above the J-shaped lead 2 and on the outer surface of the variable diameter structure 7, the right-handed nut 3 and the left-handed nut 4 are respectively matched with the double-handed discontinuous composite external thread, the right-handed nut 3 and the left-handed nut 4 are sequentially installed on the variable diameter structure 7, the right-handed nut 3 is in contact with the left-handed nut 4, the rotor conductive screw 1 and the J-shaped lead 2 are both made of copper alloy.
During processing, the upper part of the rotor conductive screw 1 is made into a reducing structure 7 according to the size of a connecting hole of the J-shaped lead 2, an lengthening structure is made according to the thicknesses of the J-shaped lead 2, the right-handed nut 3 and the left-handed nut 4, and double-handed discontinuous composite external threads (Down's threads) are processed on the outer surface of a part above the J-shaped lead 2.
During the use, fix in at first the lower extreme screw in rotor shaft inner conductor 6 of rotor conductive screw 1, then with J type lead wire 2 suit on the reducing structure 7 of rotor conductive screw 1 upper end, including gasket 5, suit dextrorotation nut 3 and screw up, guarantee J type lead wire 2 and rotor conductive screw 1 fastening back, suit and screw up levogyration nut 4 again, prevent that dextrorotation nut 3 from loosening.
Because the direction that the right-handed nut 3 moves back the silk is the direction that left-handed nut 4 was screwed up, formed the locking form in structure, can effectively strengthen the anti-vibration loose ability.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the scope of the present invention.
Claims (3)
1. The utility model provides a turbo generator rotor conductive screw structure, includes rotor shaft inner conductor (6), characterized by, still includes rotor conductive screw (1), J type lead wire (2), right-handed nut (3), left-handed nut (4) and gasket (5), the lower extreme screw in of rotor conductive screw (1) is to rotor shaft inner conductor (6) in, the upper end of rotor conductive screw (1) is reducing structure (7), J type lead wire (2) through its connecting hole suit in the bottom of reducing structure (7), gasket (5) suit is in the top of J type lead wire (2), the surface of reducing structure (7) is provided with the compound external screw thread of bispin direction, right-handed nut (3) and left-handed nut (4) respectively with the compound external screw thread fit of bispin direction discontinuity, the right-handed nut (3) and the left-handed nut (4) are sequentially arranged on the reducing structure (7).
2. The steam turbine generator rotor conducting screw structure as claimed in claim 1, wherein the right-handed nut (3) and the left-handed nut (4) are in contact, and the top end of the reducing structure (7) is higher than the top end of the left-handed nut (4).
3. The rotor conducting screw structure of the steam turbine generator as claimed in claim 1, wherein the rotor conducting screw (1) and the J-shaped lead (2) are both made of copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921991530.1U CN211715512U (en) | 2019-11-18 | 2019-11-18 | Turbo generator rotor conducting screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921991530.1U CN211715512U (en) | 2019-11-18 | 2019-11-18 | Turbo generator rotor conducting screw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211715512U true CN211715512U (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921991530.1U Active CN211715512U (en) | 2019-11-18 | 2019-11-18 | Turbo generator rotor conducting screw structure |
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| CN (1) | CN211715512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043138A (en) * | 2019-11-18 | 2020-04-21 | 华电电力科学研究院有限公司 | Steam turbine generator rotor conductive screw structure and connection method |
-
2019
- 2019-11-18 CN CN201921991530.1U patent/CN211715512U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043138A (en) * | 2019-11-18 | 2020-04-21 | 华电电力科学研究院有限公司 | Steam turbine generator rotor conductive screw structure and connection method |
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