CN217481446U - Do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi - Google Patents
Do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi Download PDFInfo
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- CN217481446U CN217481446U CN202123029617.0U CN202123029617U CN217481446U CN 217481446 U CN217481446 U CN 217481446U CN 202123029617 U CN202123029617 U CN 202123029617U CN 217481446 U CN217481446 U CN 217481446U
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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
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Abstract
The utility model aims at providing a do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi, include: the hydraulic turbine comprises a generator shaft provided with a lower flange and a plurality of stepped through holes arranged on the lower flange, a water turbine shaft provided with an upper flange and a plurality of connecting through holes arranged on the upper flange, a plurality of water turbine coupling bolts, a plurality of nuts and a plurality of stop blocks, wherein the water turbine coupling bolts, the plurality of nuts and the plurality of stop blocks are in one-to-one correspondence with the connecting through holes and the stepped through holes; the hydraulic turbine coupling bolt includes: one side of the positioning section is provided with a bolt head with a positioning plane, a thread section and a positioning section, the diameter of the positioning section is larger than the outer diameter of the thread section, and two ends of the positioning section are correspondingly connected with the bolt head and the thread section one by one; the diameter of the positioning section is matched with the diameter of the connecting through hole and the diameter of the small end of the stepped through hole; the bolt head is positioned in the large end of the stepped through hole, the positioning section is positioned in the connecting through hole and the small end of the stepped through hole, and the thread section extends out of the upper end of the connecting through hole and is in threaded connection with the nut; one side end of the stop block is pressed against the positioning plane and the stop block is welded with the lower flange.
Description
Technical Field
The utility model belongs to the technical field of hydroelectric generating equipment technique and specifically relates to a do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi.
Background
The hydraulic generator is a generator which takes a hydraulic turbine as a prime mover to convert water energy into electric energy; the mixed-flow hydraulic generator is an important branch of the hydraulic generator and comprises a large shaft shared by a hydraulic turbine and a generator, during power generation, water flows into the volute at the lower part of the large shaft and flows out of a draft tube after power generation is finished, negative pressure is formed in the draft tube during flowing, and in order to avoid deformation and damage of the draft tube due to negative pressure influence, air needs to be supplied into the draft tube through a large-shaft air supply device; the structure of the large shaft air supplement device can be known from the large shaft air supplement device of the hydraulic generator disclosed by the invention of the Chinese patent application number 201721418090.1; when the hydraulic generator normally runs, a large shaft formed by a generator shaft and a water turbine shaft coupling rotates at a high speed along with a unit, and a water turbine coupling bolt for connecting the generator shaft and the water turbine shaft is easily loosened or even falls off under the actions of centrifugal force, vibration, shearing force and the like under the long-term high-speed rotating state, so that the normal air supplement of a large shaft air supplement device is influenced, a draft tube is easily deformed and damaged, and even major accidents are caused; therefore, when the unit is rotated at a high speed, the water turbine coupling bolt looseness and the falling off can be prevented, the normal air supply of the large-shaft air supply device is facilitated, the deformation and the damage of the draft tube are not easily caused, and the water turbine coupling bolt looseness preventing device which is good in safety and facilitates air supply becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming present hydraulic turbine coupling bolt under the state of long-term high-speed rotation, exist and become flexible easily and drop even, influence the normal tonifying qi of macroaxis air supplement unit, easily cause draft tube deformation damage, cause the not enough of major accident even, provide one kind when the unit is high-speed rotatory, can prevent that hydraulic turbine coupling bolt is not hard up to drop, be favorable to the normal tonifying qi of macroaxis air supplement unit, be difficult for causing draft tube deformation damage, the better hydraulic turbine coupling bolt locking device who is favorable to the tonifying qi of security.
The utility model discloses a concrete technical scheme is:
the utility model provides a do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi, includes: the hydraulic turbine comprises a generator shaft, a turbine shaft, a plurality of hydraulic turbine coupling bolts, a plurality of nuts and a plurality of stop blocks, wherein the generator shaft is provided with a lower flange and a plurality of connecting through holes arranged on the lower flange; the hydraulic turbine coupling bolt includes: one side of the positioning section is provided with a bolt head with a positioning plane, a thread section and a positioning section, the diameter of the positioning section is larger than the outer diameter of the thread section, and two ends of the positioning section are correspondingly connected with the bolt head and the thread section one by one; the diameter of the positioning section is matched with the diameter of the connecting through hole and the diameter of the small end of the stepped through hole; the bolt head is positioned in the large end of the stepped through hole, the positioning section is positioned in the connecting through hole and the small end of the stepped through hole, and the thread section extends out of the upper end of the connecting through hole and is in threaded connection with the nut; one side end of the stop block is pressed against the positioning plane and the stop block is connected with the lower flange.
Preferably, the anti-loosening device for the water turbine coupling bolt for benefiting air supplement further comprises: the cover is sleeved outside the shaft of the water turbine, the lower end of the cover is connected with the upper flange, and the number of the fixing screws is the same as that of the coupling bolts of the water turbine and corresponds to that of the coupling bolts of the water turbine one to one; the number of the screw through holes which are arranged on the cover is the same as that of the water turbine coupling bolts and corresponds to one; the upper end of the thread section is provided with a screw hole; the screw rod of the fixing screw penetrates through the screw through hole and is in threaded connection with the screw hole.
Preferably, the lower end of the side wall of the cover cap is in threaded connection with the side wall of the upper flange.
Preferably, the positioning section is provided with two annular grooves; the lower end of one annular groove is positioned at the upper end of the bolt head, and the upper end of the other annular groove is positioned at the lower end of the threaded section.
Preferably, the axial length of the annular groove is one third to one fifth of the positioning section.
Preferably, the other side end of the stop block is provided with an arc surface with the radius matched with the radius of the large end of the stepped through hole.
Preferably, the other side end of the stop block is provided with an arc surface with the radius matched with the radius of the large end of the stepped through hole.
Compared with the prior art, the beneficial effects of the utility model are that: do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi, the location section is arranged in connect the via hole and ladder via hole tip, location section diameter and connect the via hole diameter and ladder via hole tip diameter adaptation, bolt head one side is equipped with the location plane, another side of stop block is equipped with the arc surface of radius and ladder via hole tip radius adaptation, a side end of stop block is pushed down location plane and stop block and is connected with lower flange, set screw's screw rod passes the screw spiro union that screw through hole and screw thread section upper end were equipped with, when the high-speed rotation of unit, can prevent that hydraulic turbine shaft coupling bolt is not hard up to drop, be favorable to the normal tonifying qi of macroaxis tonifying qi device, be difficult for causing draft tube deformation damage, the security is better.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the structure comprises a lower flange 1, a stepped through hole 2, a generator shaft 3, an upper flange 4, a connecting through hole 5, a water turbine shaft 6, a nut 7, a stop block 8, a positioning plane 9, a bolt head 10, a threaded section 11, a positioning section 12, a cover cap 13, a fixing screw 14, a screw through hole 15, a screw hole 16, an annular groove 17 and an arc surface 18.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in figure 1: the utility model provides a do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi, includes: the hydraulic turbine is provided with a generator shaft 3 provided with a lower flange 1 and five stepped through holes 2 arranged on the lower flange 1, a water turbine shaft 6 provided with an upper flange 4 and five connecting through holes 5 arranged on the upper flange 4, five water turbine coupling bolts, five nuts 7 and five stop blocks 8, wherein the five water turbine coupling bolts are in one-to-one correspondence with the connecting through holes 2 and the stepped through holes 5; the water turbine coupling bolt includes: the bolt head 10 with a positioning plane 9 arranged on one side, the thread section 11, and the positioning section 12 with the diameter larger than the outer diameter of the thread section 11 and the two ends corresponding to the bolt head 10 and the thread section 11 one by one to form connection; the diameter of the positioning section 12 is in transition fit with the diameter of the connecting through hole 2 and the diameter of the small end of the stepped through hole 5; the bolt head 10 is positioned in the large end of the stepped through hole 5, the positioning section 12 is positioned in the connecting through hole 2 and the small end of the stepped through hole 5, and the thread section 11 extends out of the upper end of the connecting through hole 2 and is in threaded connection with the nut 7; the stop block 8 is positioned in the large end of the stepped through hole 5, one side end of the stop block 8 is pressed against the positioning plane 9, and the stop block 8 is welded with the lower flange 1.
Do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi still include: the cover cap 13 is sleeved outside the water turbine shaft 6, the lower end of the side wall is in threaded connection with the upper flange 4, and the number of the fixing screws 14 is the same as that of the water turbine coupling bolts and corresponds to that of the water turbine coupling bolts one by one; the number of the screw through holes 15 which are arranged on the cover cap 13 is the same as that of the water turbine coupling bolts and are in one-to-one correspondence; the upper end of the thread section 11 is provided with a screw hole 16; the screw shaft of the fixing screw 14 passes through the screw through hole 15 and is screwed with the screw hole 16.
The positioning section 12 is provided with two annular grooves 17; the lower end of one annular groove 17 is positioned at the upper end of the bolt head 10, and the upper end of the other annular groove 17 is positioned at the lower end of the threaded section 11.
The other side end of the stop block 8 is provided with an arc surface 18 with the radius in transition fit with the radius of the large end of the stepped through hole 5.
In addition to the above embodiments, the technical features or technical data of the present invention can be selected and combined again within the scope disclosed in the claims and the specification of the present invention to constitute new embodiments, which can be realized by those skilled in the art without creative efforts, therefore, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and within the protection scope of the present invention.
Claims (7)
1. The utility model provides a do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi, includes: the generator shaft that is equipped with lower flange and locates a plurality of ladder through-holes on the lower flange is equipped with the flange and locates the water turbine shaft of a plurality of connect the through-hole on the flange, characterized by: do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi still include: the water turbine coupling bolts, the nuts and the stop blocks are in one-to-one correspondence with the connecting through holes and the stepped through holes; the hydraulic turbine coupling bolt includes: one side of the positioning section is provided with a bolt head of a positioning plane, a thread section and a positioning section, the diameter of the positioning section is larger than the outer diameter of the thread section, and two ends of the positioning section are correspondingly connected with the bolt head and the thread section one by one; the diameter of the positioning section is matched with the diameter of the connecting through hole and the diameter of the small end of the stepped through hole; the bolt head is positioned in the large end of the stepped through hole, the positioning section is positioned in the connecting through hole and the small end of the stepped through hole, and the thread section extends out of the upper end of the connecting through hole and is in threaded connection with the nut; one side end of the stop block is pressed against the positioning plane and the stop block is connected with the lower flange.
2. The anti-loosening device for the coupling bolt of the water turbine facilitating air supplement as claimed in claim 1, which is characterized in that: further comprising: the cover covers are sleeved outside the shaft of the water turbine, the lower end of the cover covers is connected with the upper flange, and the number of the cover covers is the same as that of the water turbine coupling bolts and the cover covers correspond to the fixing bolts one by one; the number of the screw through holes which are arranged on the cover is the same as that of the water turbine coupling bolts and corresponds to one; the upper end of the thread section is provided with a screw hole; the screw rod of the fixing screw penetrates through the screw through hole and is in threaded connection with the screw hole.
3. The anti-loosening device for the coupling bolt of the water turbine facilitating air supplement as claimed in claim 2, wherein: the lower end of the side wall of the cover cap is in threaded connection with the side wall of the upper flange.
4. The anti-loosening device for the coupling bolt of the water turbine beneficial to air supplement as claimed in claim 1, 2 or 3, is characterized in that: the positioning section is provided with two annular grooves; the lower end of one annular groove is positioned at the upper end of the bolt head, and the upper end of the other annular groove is positioned at the lower end of the threaded section.
5. The anti-loosening device for the coupling bolt of the water turbine facilitating air supplement as claimed in claim 4, wherein: the axial length of the annular groove is one third to one fifth of the positioning section.
6. The anti-loosening device for the coupling bolt of the water turbine facilitating air supply as claimed in claim 1, 2 or 3, wherein: the other side end of the stop block is provided with an arc surface with the radius matched with that of the large end of the stepped through hole.
7. The anti-loosening device for the coupling bolt of the water turbine facilitating air supply as claimed in claim 1, 2 or 3, wherein: the other side end of the stop block is provided with an arc surface with the radius matched with that of the large end of the stepped through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123029617.0U CN217481446U (en) | 2021-12-02 | 2021-12-02 | Do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123029617.0U CN217481446U (en) | 2021-12-02 | 2021-12-02 | Do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217481446U true CN217481446U (en) | 2022-09-23 |
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ID=83302643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123029617.0U Active CN217481446U (en) | 2021-12-02 | 2021-12-02 | Do benefit to hydraulic turbine shaft coupling bolt locking device of tonifying qi |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217481446U (en) |
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2021
- 2021-12-02 CN CN202123029617.0U patent/CN217481446U/en active Active
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