CN218829324U - Lead-out wire connection structure of hydraulic generator stator core-through screw - Google Patents
Lead-out wire connection structure of hydraulic generator stator core-through screw Download PDFInfo
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- CN218829324U CN218829324U CN202222934963.1U CN202222934963U CN218829324U CN 218829324 U CN218829324 U CN 218829324U CN 202222934963 U CN202222934963 U CN 202222934963U CN 218829324 U CN218829324 U CN 218829324U
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- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 14
- 238000009413 insulation Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses a lead-out wire connection structure of hydraulic generator stator cored screw relates to hydraulic generator operation on-line monitoring technical field, including screw rod end, swivel nut, screw, terminal and lead-out wire, the swivel nut sets up on the screw rod end, and the lead-out wire penetrates the terminal and sets up, be provided with the screw through-hole on the swivel nut, the screw passes through the screw through-hole and fixes the terminal on the swivel nut, should set up simple structure, firm reliable, convenient to use is stable, factor of safety is high, economic nature is good, neither changes the screw rod primary structure, does not influence screw rod primary structure security, can guarantee again that screw rod end and lead-out wire realize good electrical connection and reliable mechanical fastening, for the insulating on-line monitoring of the core of the screw rod is worn to the realization, provides the basis.
Description
Technical Field
The patent relates to the technical field of hydraulic generator operation on-line monitoring, in particular to a reliable connection structure for an outgoing line for monitoring the electric quantity of a core-penetrating screw of a hydraulic generator stator core.
Background
The feed-through screw is located inside a main magnetic field (a stator core yoke part) of the generator, and in order to prevent the stator core from being damaged due to short circuit and grounding through the feed-through screw, an insulating sleeve needs to be arranged between the feed-through screw and the stator core. According to statistics, the ground insulation of the stator core feed-through screw is degraded, and even the fault caused by zero ground insulation resistance accounts for a high proportion of stator core faults. Once the eddy current or the circulation current in the iron core occurs, the local high temperature of the stator iron core can be caused, even the iron core is burnt and melted, and the damage is very serious.
In order to realize the online monitoring of the insulation level of the iron core by the screw, an outgoing line is required to lead out the electrical quantity in the screw, and at present, no structural scheme capable of ensuring the reliable connection between the outgoing line and the screw for the online monitoring of the core-penetrating screw of the stator of the hydraulic generator is available in practice and relevant documents and patents.
The prior art proposes a Chinese invention patent document with publication number CN106443318A and publication date of 2017, 2 and 22, and the patent document discloses the following technical scheme:
the invention discloses a hydro-generator rotor winding turn-to-turn short circuit diagnosis method based on a penetrating screw. And carrying out real-time data processing on the acquired induction voltage of the penetrating screw, comparing the deviation of the induction voltage on the penetrating screw when the same positions of different magnetic poles sweep the penetrating screw, and judging that the hydro-generator has a rotor winding turn-to-turn short circuit fault when the voltage difference exceeds a set threshold value. The invention can improve the defects of the prior art and improve the diagnosis level of the faults.
The invention discloses a method for diagnosing turn-to-turn short circuit of a rotor winding of a hydraulic generator based on a feed-through screw, which can complete magnetic field measurement by leading out a measurement lead-out wire on the feed-through screw, is very safe and convenient to implement, but does not provide a stable and reliable lead-out wire connection structure, although Chinese patent documents with the publication number of CN108173363A or the publication number of CN209748278U and the like disclose different stator core feed-through screw structures, the structures are used for reducing vibration evaluation rate and playing a role in screw insulation, and a structural scheme for reliably connecting the feed-out wire and the screw on-line monitoring of the feed-through screw of the hydraulic generator stator with the feed-through screw cannot be provided.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a hydraulic generator stator is lead-out wire connection structure of core screw rod worn unshakable in one's determination, this structure neither changes the screw rod primary structure, does not influence screw rod primary structure security, can guarantee again that screw rod end and lead-out wire realize good electrical connection and reliable mechanical fastening, for realizing that the core screw rod provides the basis to unshakable in one's determination insulating on-line monitoring.
The utility model discloses a realize through adopting following technical scheme:
the utility model provides a lead-out wire connection structure of hydraulic generator stator core screw rod, includes screw rod end, swivel nut, screw, terminal and lead-out wire, the swivel nut sets up on the screw rod end, and the lead-out wire penetrates the terminal and sets up, be provided with the screw thread through-hole on the swivel nut, the screw passes through the screw thread through-hole and fixes the terminal on the swivel nut.
Furthermore, a stop washer is arranged on the end head of the screw rod, and the stop washer is sleeved into the end head of the screw rod to lock and fix the threaded sleeve.
Further, the stop washer is a single-lug stop washer or a double-lug stop washer.
Furthermore, the thread insert is of an internal thread and an external thread or has a structure with only an internal thread.
Furthermore, two planes are arranged on the outer side of the threaded sleeve.
Further, the threaded through hole is arranged in one of the planes.
Further, the screw is fixed with the plane on the outer side of the screw sleeve in a spot welding mode.
Further, the threaded through hole is a threaded blind hole, an optical through hole or an optical blind hole.
Furthermore, a gap is formed between the lower end face of the screw and the external thread of the screw rod.
Further, the terminal is a Y-shaped terminal or a ring terminal.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a hydraulic generator stator is lead-out wire connection structure of screw rod of wearing core unshakable in one's determination, this setting have simple structure, convenient to use is stable, characteristics that economic nature is good, neither changes the screw rod primary structure, does not influence screw rod primary structure security, can guarantee again that screw rod end and lead-out wire realize good electrical connection and reliable mechanical fixation, for the insulating on-line monitoring of the screw rod of wearing core to unshakable in one's determination of realization, provide the basis.
2. The utility model discloses in, be provided with lock washer on the screw rod end, lock washer embolias the screw rod end with the swivel nut lock solid, makes overall structure more firm, increases the stability and the security of device.
3. The utility model discloses in, according to the actual demand, lock washer is monaural lock washer or ears lock washer.
4. The utility model discloses in, according to the actual demand, the swivel nut is interior external screw thread or only has the structure of internal screw thread.
5. The utility model discloses in, the swivel nut outside is provided with two planes, through planar setting, can be used as lock solid and the installation of acting as to the swivel nut and dismantle or be used for the laminating of annular terminal, make the laminating of annular terminal on the swivel nut, increase the wholeness ability and the stability of structure.
6. The utility model discloses in, the screw thread through-hole sets up in one of them plane to when making the screw pass through the screw thread through-hole and fixing the terminal on the swivel nut, the terminal can closely laminate on the plane of swivel nut, increases the wholeness ability and the stability of structure, further guarantees that screw rod end and lead-out wire realize good electrical connection.
7. The utility model discloses in, the screw is fixed with swivel nut side plane spot welding, makes overall structure more firm, increases the stability and the security of device.
8. The utility model discloses in, according to the actual demand, the screw thread through-hole can be screw thread blind hole, smooth through-hole or light blind hole.
9. The utility model discloses in, be provided with the clearance between the lower terminal surface of screw and the external screw thread of screw rod for the lower terminal surface contactless screw rod's of screw external screw thread further guarantees not to influence the original structure of screw rod, increases the wholeness ability and the stability of structure, further guarantees the screw rod end and realizes good electrical connection with the lead-out wire.
10. The utility model discloses in, the terminal is Y type terminal or annular terminal, accords with overall structure setting, and the installation of being convenient for increases the stability of structure.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic view of a thread insert according to an embodiment of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 5 is a side view of a ring terminal according to an embodiment of the present invention;
fig. 6 is a front view of a ring terminal according to an embodiment of the present invention.
The labels in the figure are:
1. the screw sleeve comprises a screw sleeve body 2, a stop washer 3, a screw 4, a terminal 5, a leading-out wire 6, a screw rod end 7, an internal thread 8, an external thread 9 and a threaded through hole.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined below to clearly and completely describe the technical solution of the embodiments of the present invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of the terms "comprising" or "including" and the like in the present disclosure is intended to mean that the elements or items listed before the term are inclusive of the elements or items listed after the term and their equivalents, without excluding other elements or items. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The present invention will be further explained with reference to the drawings and examples.
Example 1
As a preferred embodiment of the utility model, the embodiment provides a hydraulic generator stator core wears lead-out wire connection structure of core screw rod, including screw rod end 6, swivel nut 1, screw 3, annular terminal 4 and lead-out wire 5, swivel nut 1 sets up on screw rod end 6, and lead-out wire 5 penetrates annular terminal 4 and sets up, be provided with screw thread through-hole 9 on the swivel nut 1, screw 3 passes through screw thread through-hole 9 and fixes annular terminal 4 on swivel nut 1.
The embodiment has the advantages of simple structure, convenience and stability in use and good economical efficiency, does not change the original structure of the screw, does not influence the safety of the original structure of the screw, can ensure that the screw end 6 and the outgoing line 5 realize good electrical connection and reliable mechanical fixation, and provides a foundation for realizing the on-line insulation monitoring of the core-penetrating screw on the iron core.
Example 2
As another preferred embodiment of the present invention, referring to fig. 1 of the specification, the present embodiment provides a leading-out wire connection structure of a stator core-through screw of a hydraulic generator, including a screw end 6, a barrel 1, a screw 3, an annular terminal 4 and a leading-out wire 5, the barrel 1 is disposed on the screw end 6, the leading-out wire 5 penetrates the annular terminal 4 and is fastened, a threaded through hole 9 is disposed on the barrel 1, the screw 3 fixes the annular terminal 4 on the barrel 1 through the threaded through hole 9, a lock washer 2 is disposed on the screw end 6, the lock washer 2 is sleeved in the screw end 6 to lock the barrel 1, the lock washer 2 is a double-lug lock washer 2, the barrel 1 is an inner and outer thread 8 structure, two planes are disposed outside the barrel 1, the threaded through hole 9 is disposed in one of the planes, the screw is a blind hole, a gap is disposed between a lower end surface of the screw 3 and the outer thread 8 of the screw, and the screw 3 is fixed to the side plane of the barrel 1 by spot welding.
The embodiment has the advantages of simple structure, firmness and reliability, convenience and stability in use, high safety factor and good economy, the original structure of the screw is not changed, the safety of the original structure of the screw is not influenced, good electrical connection and reliable mechanical fixation of the screw end 6 and the outgoing line 5 can be guaranteed, a foundation is provided for the on-line insulation monitoring of the iron core by the core-penetrating screw, two planes are arranged on the outer side of the screw sleeve 1, one plane is used for locking and dismounting the screw sleeve 1 or laminating the annular terminal 4, the annular terminal 4 is laminated on the screw sleeve 1, the overall performance and stability of the structure are improved, the other plane is provided with the threaded through hole 9, the screw 3 fixes the terminal 4 on the screw sleeve 1 through the threaded through hole 9, the terminal 4 can be tightly laminated on the plane of the screw sleeve 1, the overall performance and stability of the structure are improved, and the good electrical connection of the screw end 6 and the outgoing line 5 is further guaranteed.
Example 3
As another preferred embodiment of the utility model, the embodiment provides a hydraulic generator stator core wears lead-out wire connection structure of core screw rod, including screw rod end 6, swivel nut 1, screw 3, ring terminal 4 and lead-out wire 5, swivel nut 1 sets up on screw rod end 6, and lead-out wire 5 penetrates ring terminal 4 and sets up, be provided with screw through-hole 9 on the swivel nut 1, screw 3 fixes ring terminal 4 on swivel nut 1 through screw through-hole 9, is provided with lock washer 2 on screw rod end 6, and lock washer 2 embolias screw rod end 6 with swivel nut 1 lock solid, and lock washer 2 is monaural lock washer 2, and swivel nut 1 is the structure that only has inside screw thread, and the swivel nut 1 outside is provided with the plane, and screw through-hole 9 sets up in the plane, and the screw is the light blind hole.
The embodiment has the advantages of simple structure, convenience and stability in use, high safety factor and good economical efficiency, does not change the original structure of the screw rod, does not influence the safety of the original structure of the screw rod, can ensure that the end head 6 of the screw rod and the outgoing line 5 of the screw rod are in good electrical connection and reliable mechanical fixation, provides a foundation for realizing the on-line insulation monitoring of the core by the core-penetrating screw rod, and is used for locking and mounting the screw sleeve 1 through the arrangement of the plane, thereby being convenient to use and being convenient to dismount.
Example 4
As another preferred embodiment of the present invention, the present embodiment provides a lead-out wire connection structure of a stator core-through screw rod of a hydraulic generator, including a screw rod end 6, a threaded sleeve 1, a screw 3, a terminal 4 and a lead-out wire 5, the threaded sleeve 1 is disposed on the screw rod end 6, the lead-out wire 5 penetrates the terminal 4 and is fastened, a threaded through hole 9 is disposed on the threaded sleeve 1, the screw 3 fixes the terminal 4 on the threaded sleeve 1 through the threaded through hole 9, a lock washer 2 is disposed on the screw rod end 6, the lock washer 2 is sleeved in the screw rod end 6 to lock the threaded sleeve 1, the lock washer 2 is a double-lug lock washer 2, the threaded sleeve 1 is a structure with only internal threads, a plane is disposed on the outer side of the threaded sleeve 1, the screw is a smooth through hole, a gap is disposed between the lower end surface of the screw 3 and the external thread 8 of the screw rod, and the terminal 4 is a Y-type terminal 4.
This embodiment simple structure, firm reliable, convenient to use is stable, factor of safety is high, economic nature is good, neither change the screw rod primary structure, do not influence screw rod primary structure security, can guarantee again that screw rod end 6 and lead-out wire 5 realize good electrical connection and reliable mechanical fixation, it provides the basis to the insulating on-line monitoring of unshakable in one's determination to realize the screw rod of wearing, the swivel nut 1 outside is provided with the plane, through planar setting, can be used as to the lock solid of swivel nut 1 and the laminating of installing the dismantlement usefulness or being used for annular terminal 4, make annular terminal 4 laminate on swivel nut 1, increase the wholeness ability and the stability of structure.
Example 5
As another preferred embodiment of the present invention, the present embodiment provides a leading-out wire connection structure of hydraulic generator stator core threading screw, including screw rod end 6, swivel nut 1, screw 3, ring terminal 4 and leading-out wire 5, swivel nut 1 sets up on screw rod end 6, and leading-out wire 5 penetrates ring terminal 4 and fastens, be provided with threaded through hole 9 on swivel nut 1, screw 3 passes through threaded through hole 9 and fixes ring terminal 4 on swivel nut 1, is provided with lock washer 2 on screw rod end 6, and lock washer 2 embolias screw rod end 6 with swivel nut 1 lock solid, and lock washer 2 is monaural lock washer 2, and swivel nut 1 is the structure of internal and external screw thread 8, and the swivel nut 1 outside is provided with the plane, and threaded through hole 9 sets up in the plane, and the screw is the screw blind hole, is provided with the clearance between the external screw thread 8 of the lower terminal surface of screw 3 and the screw rod.
This embodiment simple structure, it is firm reliable, high safety factor, economic nature is good, neither change the screw rod primary structure, do not influence screw rod primary structure security, can guarantee screw rod end 6 and lead-out wire 5 again and realize good electrical connection and reliable mechanical fastening, the insulating on-line monitoring who wears the screw to unshakable in one's determination provides the basis for realizing, the swivel nut 1 outside is provided with the plane, screw through-hole 9 sets up in the plane, thereby when making screw 3 fix terminal 4 on swivel nut 1 through screw through-hole 9, terminal 4 can closely laminate on the plane of swivel nut 1, increase the wholeness ability and the stability of structure, further guarantee screw rod end 6 and lead-out wire 5 and realize good electrical connection.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention will still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an outgoing line connection structure of hydraulic generator stator core lead screw rod, its characterized in that, includes screw rod end (6), swivel nut (1), screw (3), terminal (4) and outgoing line (5), swivel nut (1) sets up on screw rod end (6), and outgoing line (5) penetrate terminal (4) and fasten, be provided with screw thread through-hole (9) on swivel nut (1), screw (3) are fixed terminal (4) on swivel nut (1) through screw thread through-hole (9).
2. The outgoing line connecting structure of the core-penetrating screw rod of the stator core of the hydraulic generator according to claim 1, wherein a stop washer (2) is arranged on the end head (6) of the screw rod, and the stop washer (2) is sleeved into the end head (6) of the screw rod to lock and fix the threaded sleeve (1).
3. The outgoing line connecting structure of the stator core-through screw rod of the hydraulic generator according to claim 2, wherein the stop washer (2) is a single-lug stop washer or a double-lug stop washer.
4. The outgoing line connecting structure of the stator core penetrating screw of the hydraulic generator according to claim 1, wherein the thread insert (1) is of an internal thread and an external thread (8) or a structure with only internal threads.
5. The outgoing line connecting structure of the stator core-through screw rod of the hydraulic generator according to claim 1, wherein two planes are arranged outside the screw sleeve (1).
6. The outgoing line connecting structure of a stator core-through screw rod of a hydraulic generator according to claim 5, wherein the threaded through hole (9) is provided in one of the planes.
7. The outgoing line connecting structure of the stator core-through screw rod of the hydraulic generator according to claim 6, wherein the screw (3) is fixed with the plane outside the screw sleeve (1) by spot welding.
8. The outgoing line connecting structure of the hydro-generator stator core lead-through screw according to claim 1, wherein the threaded through hole (9) is a threaded blind hole, an optical through hole or an optical blind hole.
9. The outgoing line connecting structure of the stator core-through screw rod of the hydraulic generator according to claim 1, wherein a gap is provided between the lower end surface of the screw (3) and the external thread (8) of the screw rod.
10. The outgoing line connecting structure of the stator core-through screw rod of the hydraulic generator according to claim 1, wherein the terminal (4) is a Y-shaped terminal or an annular terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222934963.1U CN218829324U (en) | 2022-11-04 | 2022-11-04 | Lead-out wire connection structure of hydraulic generator stator core-through screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222934963.1U CN218829324U (en) | 2022-11-04 | 2022-11-04 | Lead-out wire connection structure of hydraulic generator stator core-through screw |
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| Publication Number | Publication Date |
|---|---|
| CN218829324U true CN218829324U (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222934963.1U Active CN218829324U (en) | 2022-11-04 | 2022-11-04 | Lead-out wire connection structure of hydraulic generator stator core-through screw |
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| Country | Link |
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| CN (1) | CN218829324U (en) |
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- 2022-11-04 CN CN202222934963.1U patent/CN218829324U/en active Active
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Inventor after: Wang Haitao Inventor after: Zhang Lin Inventor after: Hou Xiaoyu Inventor after: Lou Tengsheng Inventor after: Gu Xinming Inventor after: Yang Zhengwei Inventor after: Mei Renjie Inventor after: Hou Peipei Inventor after: Zhao Junke Inventor after: Zhou Jiayuan Inventor after: Chen Shangui Inventor after: Gao Tao Inventor after: Tian Peng Inventor after: Hu Hao Inventor after: Duo Lin Inventor after: Shi Jingwei Inventor before: Wang Haitao Inventor before: Zhang Lin Inventor before: Hou Xiaoyu Inventor before: Lou Tengsheng Inventor before: Gu Xinming Inventor before: Yang Zhengwei Inventor before: Mei Renjie Inventor before: Hou Peipei Inventor before: Zhao Junke Inventor before: Zhou Jiayuan Inventor before: Chen Shangui Inventor before: Gao Tao Inventor before: Tian Peng Inventor before: Hu Hao Inventor before: Duo Lin Inventor before: Shi Jingwei |