CN216198600U - High-reliability hydraulic power plant anti-drop master control switch device - Google Patents
High-reliability hydraulic power plant anti-drop master control switch device Download PDFInfo
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- CN216198600U CN216198600U CN202121937870.3U CN202121937870U CN216198600U CN 216198600 U CN216198600 U CN 216198600U CN 202121937870 U CN202121937870 U CN 202121937870U CN 216198600 U CN216198600 U CN 216198600U
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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
An anti-drop master switch device of a high-reliability hydraulic power plant comprises a master switch, wherein a magnetic head of the master switch is connected to a servomotor through an anti-drop structure; the anti-falling structure comprises a double-cylinder gear and a first welding block; the first welding block is connected to the guide vane servomotor of the water turbine, the double-cylinder gears are two cylindrical steel columns arranged side by side, and the steel columns are connected through a connecting plate; the magnetic head of the master switch is positioned in a space formed by the double cylindrical gears; the master switch periphery passes through the installation of second welding piece, and second welding piece passes through bolt fixed connection with the master switch. The connection form of double cylindrical screens is adopted between the magnetic head of the master switch and the servomotor, so that the installation errors of front and back, left and right, and up and down are overcome, and the problem that the magnetic head is easy to fall off due to the fact that the magnetic head and the servomotor are directly welded and no buffer device exists is solved; the protection grade of a magnetic memory switch of the master switch is IP67, the magnetic memory switch cannot be damaged after being soaked in water, and the normal work of the magnetic memory switch is not influenced by the water leakage of the guide vane of the unit.
Description
Technical Field
The utility model relates to the technical field of master switches, in particular to an anti-drop master switch device for a high-reliability hydraulic power plant.
Background
The main control switch of the hydraulic power plant is used as an important automatic component of the hydraulic turbine, is arranged on a guide vane servomotor mechanism of the hydraulic turbine, reflects the opening position of a guide vane of the unit, and is connected with a monitoring system through an electric appliance contact in the device, so that the automatic control of the unit can be realized.
The master switch of the P-shaped smart power plant is of a magnetic turning plate type, the total length of the magnetic turning plate is 900 mm, and five magnetic memory switches are arranged on the master switch, namely a guide vane full-closed switch, a guide vane no-load opening degree above, a guide vane full-open switch and a guide vane full-open switch above. The magnetic head of the master switch and the servomotor are directly welded through a steel bar with the length of 20 cm, and the servomotor drives the magnetic head to do linear motion in the up-and-down motion process. The servomotor sends the five switching value signals to the LCU cabinet switching value switching-in module through a cable in the process of up-and-down movement, and the upper computer judges the state of the unit through a master switch position signal.
The magnetic head of the master switch of 5 units of the P-shaped hydroelectric power plant is directly welded with the servomotor through a steel bar, and the magnetic head is driven to do linear motion in the up-and-down motion process of the servomotor. The magnetic head of the master switch and the servomotor are directly welded without a buffer device, the magnetic head falls off due to large swing in the up-and-down operation process of the push-pull rod of the servomotor, the magnetic memory switch acts wrongly, the state of the unit is displayed in an unstable state, and the upper computer cannot issue a command. At present, the magnetic head is bound by iron wires, so that great potential safety hazards exist. Until now, the master switch magnetic head frequently has a drop fault. In the starting process of the unit, the upper computer cannot give a command, the unit cannot be started normally, and water is abandoned and is subjected to scheduling examination; in the shutdown process of the unit, the upper computer cannot issue a command, and the unit cannot be normally shut down. In addition, the guide vane water leakage condition sometimes exists at the installation position of the master switch, so that the magnetic memory switch of the master switch is wetted and can be burnt out, and once the magnetic head is wetted and rusted, the operation of the unit is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the situation and provide the high-reliability hydraulic power plant anti-drop master switch device, the magnetic head and the servomotor are connected in a double-cylinder clamping and shifting manner, the mounting errors of front and back, left and right, and up and down are overcome, the servomotor only drives the magnetic head to directly move up and down when moving, no stress is applied in other directions, the service life is prolonged, and the measurement reliability is improved.
An anti-drop master switch device of a high-reliability hydraulic power plant comprises a master switch, wherein a magnetic head of the master switch is connected to a servomotor through an anti-drop structure;
the anti-falling structure comprises a double-cylinder gear and a first welding block; the first welding block is connected to the water turbine guide vane servomotor through welding, the double-cylinder gears are two cylindrical steel columns arranged side by side, and the steel columns are connected through a connecting plate; the magnetic head of the master switch is positioned in a space formed by the double cylindrical gears; wherein first welding piece is for taking to dial the card welding piece, adopts the bi-cylinder to keep off the position and can overcome around, control, upper and lower installation error.
The periphery of the master switch is installed through a second welding block, and the second welding block is fixedly connected with the master switch through a bolt.
Furthermore, one end of the first welding block is connected to the water turbine guide vane servomotor through welding, and the other end of the first welding block is fixedly connected with a double-cylinder gear.
Furthermore, one end of the steel column is welded to the first welding block, and the other end of the steel column is connected through a connecting plate.
Furthermore, the distance between the two steel columns is larger than or equal to the outer diameter of the master switch magnetic head.
Furthermore, the second welding block is fixedly connected to the peripheral supporting leg of the master switch through an outer hexagon bolt, a spring washer and a flat washer are laid between the second welding block and the outer hexagon bolt, the flat washer is in contact with the outer hexagon bolt, and the spring washer is in contact with the second welding block.
Further, the protection grade of the magnetic memory switch of the master switch is IP 67.
Compared with the prior art, the utility model has the beneficial effects that:
according to the high-reliability anti-falling master switch device for the hydraulic power plant, the connection form of double cylindrical clamping positions is adopted between the magnetic head of the master switch and the servomotor, so that the mounting errors of front and back, left and right, and up and down can be overcome, and the problem that the magnetic head is easy to fall off due to the fact that the magnetic head is directly welded with the servomotor and a buffer device is not arranged is solved; therefore, the servomotor only drives the magnetic head to move up and down directly when moving, and no stress is applied to other directions, so that the service life and the measurement reliability can be greatly improved.
According to the master switch in the high-reliability hydraulic power plant anti-drop master switch device, the protection grade of the magnetic memory switch is IP67, foreign objects and dust can be completely prevented from entering the master switch, and the master switch can be ensured not to be damaged after being soaked in water, so that the normal work of the magnetic memory switch is not influenced due to the water leakage of the guide vanes of the unit.
In conclusion, the master switch in the high-reliability hydraulic power plant anti-drop master switch device fundamentally overcomes the defects that the magnetic head drops due to large vibration, the action of the magnetic memory switch is inaccurate, and the upper computer cannot obtain accurate information of the unit state. And the protection level of the magnetic memory switch is improved, and equipment damage caused by guide vane water leakage is prevented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a front sectional view of an anti-drop master switch device of a high-reliability hydraulic power plant in an embodiment of the utility model.
Fig. 2 is a side sectional view of an anti-drop master switch device of a high-reliability hydraulic power plant in an embodiment of the utility model.
In the figure: 1-master switch, 11-magnetic head, 2-servomotor, 3-first welding block, 4-steel column, 5-connecting plate, 6-second welding block and 7-outer hexagon bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The specific embodiment is as follows:
as shown in fig. 1 and 2, the anti-drop master switch device for the high-reliability hydraulic power plant comprises a master switch 1, wherein a magnetic head 11 of the master switch is connected to a servomotor 2 through an anti-drop structure.
The anti-drop structure comprises a double-cylinder gear and a first welding block 3, the first welding block 3 is connected to the water turbine guide vane servomotor 2 through welding, the first welding block 3 is a long-strip-shaped steel block, one end of the long-strip-shaped steel block is connected to the servomotor 2 through welding, and the other end of the long-strip-shaped steel block is fixedly connected with the double-cylinder gear. The bi-cylinder keeps off position for two cylindric steel columns that set up side by side, the steel column passes through the connecting plate to be connected, and is concrete, and the bi-cylinder keeps off the position including two cylindric steel columns 4, and the one end of two steel columns 4 welds in first welding block 3, and the other end of steel column 4 connects through connecting plate 5, and connecting plate 5 adopts the steel sheet. The magnetic head 11 of the master switch is positioned in the space formed by the double cylindrical gears. The distance that the magnetic head 5 of the master switch extends into the space formed by the double cylindrical gears is at least 10 mm, and in specific operation, the distance that the magnetic head of the master switch extends into the space formed by the double cylindrical gears is determined according to specific installation conditions, so that the magnetic head can not be drawn out from the space in the cylindrical gears when the servomotor moves up and down. Wherein the welding of first welding piece has the bi-cylindrical to keep off the position, can overcome around, control, upper and lower installation error.
In this embodiment, the periphery of master switch is installed in the assigned position through second welding piece 6, and second welding piece 6 passes through bolt fixed connection with master switch. Specifically, the second welds the piece and is square steel block, and second welds piece 6 through outer hex bolts 7 fixed connection in master switch's periphery landing leg, has laid spring washer and plain washer between second welding piece 6 and the outer hex bolts 7, and wherein plain washer contacts with outer hex bolts, and spring washer contacts with second welding piece. The first welding block and the second welding block are both welded on site.
In this embodiment, the distance between the two steel columns 4 is greater than or equal to the outer diameter of the master switch magnetic head 11, so that the magnetic head can move up and down, left and right, and back and forth in the space in the double-cylinder gear formed by the two steel columns to form a buffer space, and the up-down, left-right, and front-back errors generated when the master switch is installed are overcome.
In this embodiment, the protection level of the magnetic memory switch of the master switch is I P67, which can completely prevent the invasion of foreign objects and dust, and can ensure that the switch is not damaged after being soaked in water, so that the normal operation of the magnetic memory switch is not affected by the water leakage of the guide vane of the unit.
According to the high-reliability anti-falling master switch device for the hydraulic power plant, the connection form of double cylindrical clamping positions is adopted between the magnetic head of the master switch and the servomotor, so that the mounting errors of front and back, left and right, and up and down can be overcome, and the problem that the magnetic head is easy to fall off due to the fact that the magnetic head is directly welded with the servomotor and a buffer device is not arranged is solved; therefore, the servomotor only drives the magnetic head to move up and down directly when moving, and no stress is applied to other directions, so that the service life and the measurement reliability can be greatly improved.
The master switch in the high-reliability hydraulic power plant anti-drop master switch device fundamentally overcomes the defects that the magnetic head drops due to large vibration, the action of the magnetic memory switch is inaccurate, and an upper computer cannot obtain accurate information of the unit state. And the protection level of the magnetic memory switch is improved, and equipment damage caused by guide vane water leakage is prevented. Through using this master switch device, eliminated the unit because of master switch action is inaccurate, the unable order of issuing of host computer to lead to the number of times of unable start, also saved the time that the unit overhauld this defect of processing simultaneously, practiced thrift the cost: the number of times that the unit can't normally start can be eliminated to this device, if every year according to every machine unusual start secondary calculation, the time that an average unit need overhaul the processing is an hour. The predicted power generation benefit is saved by about 9.6 ten thousand degrees for one machine, and the cost is saved by about 48 ten thousand degrees for five machine sets. Meanwhile, the scheduling assessment caused by the fact that the terminal is started on time without complying with the scheduling requirement is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a high reliability hydroelectric power plant anti-drop master switch device, includes master switch, its characterized in that: the master switch magnetic head is connected to the servomotor through the anti-falling structure;
the anti-falling structure comprises a double-cylinder gear and a first welding block; the first welding block is connected to the water turbine guide vane servomotor, the double-cylinder gears are two cylindrical steel columns arranged side by side, and the steel columns are connected through a connecting plate; the magnetic head of the master switch is positioned in a space formed by the double cylindrical gears;
the periphery of the master switch is installed through a second welding block, and the second welding block is fixedly connected with the master switch through a bolt.
2. The high-reliability hydraulic power plant anti-drop master switch device according to claim 1, characterized in that: one end of the first welding block is connected to the water turbine guide vane servomotor in a welding mode, and the other end of the first welding block is fixedly connected with a double-cylinder gear.
3. The high-reliability hydraulic power plant anti-drop master switch device according to claim 2, characterized in that: one end of the steel column is welded to the first welding block, and the other end of the steel column is connected through a connecting plate.
4. The high-reliability hydraulic power plant anti-drop master switch device according to claim 3, characterized in that: the distance between the two steel columns is larger than or equal to the outer diameter of the master switch magnetic head.
5. The high-reliability hydraulic power plant anti-drop master switch device according to claim 1, characterized in that: the second welding block is fixedly connected to the peripheral supporting leg of the master switch through an outer hexagon bolt, and a spring washer and a flat washer are laid between the second welding block and the outer hexagon bolt.
6. The high-reliability hydraulic power plant anti-drop master switch device according to claim 1, characterized in that: the protection rating of the magnetic memory switch of the master switch is I P67.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121937870.3U CN216198600U (en) | 2021-08-18 | 2021-08-18 | High-reliability hydraulic power plant anti-drop master control switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121937870.3U CN216198600U (en) | 2021-08-18 | 2021-08-18 | High-reliability hydraulic power plant anti-drop master control switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216198600U true CN216198600U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121937870.3U Active CN216198600U (en) | 2021-08-18 | 2021-08-18 | High-reliability hydraulic power plant anti-drop master control switch device |
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| Country | Link |
|---|---|
| CN (1) | CN216198600U (en) |
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2021
- 2021-08-18 CN CN202121937870.3U patent/CN216198600U/en active Active
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