CN216670103U - Novel hydroelectric generating set axle current detection device - Google Patents
Novel hydroelectric generating set axle current detection device Download PDFInfo
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- CN216670103U CN216670103U CN202123186254.1U CN202123186254U CN216670103U CN 216670103 U CN216670103 U CN 216670103U CN 202123186254 U CN202123186254 U CN 202123186254U CN 216670103 U CN216670103 U CN 216670103U
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- detection
- detection box
- permanent magnet
- box
- ring belt
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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 novel hydroelectric generating set shaft current detection device, which comprises a detection box and a display control instrument, wherein the detection box is of a circular box body structure formed by splicing two semicircular bodies, two ends of each of the two semicircular bodies of the detection box are respectively provided with corresponding connecting lugs, and two groups of corresponding connecting lugs on the two semicircular bodies of the detection box are respectively connected through bolts; a detection assembly and a signal receiving and transmitting device are arranged in the detection box, the detection assembly is a permanent magnet ring belt, and the permanent magnet ring belt is a circular ring belt structure formed by splicing two semicircular ring belts; the detection surface of the permanent magnet ring belt extends out of the detection box from the inner ring surface of the detection box, and the signal output end of the permanent magnet ring belt is connected with the signal input end of the display control instrument through a signal receiving and sending device. The utility model adopts an induction type detection mode, reduces the direct contact with the large shaft of the water turbine, reduces the occurrence of safety accidents, and ensures the reliability and the practicability of equipment.
Description
Technical Field
The utility model relates to the field of shaft current detection, in particular to a novel shaft current detection device for a hydroelectric generating set.
Background
When the water turbine generator operates, due to the fact that air gaps between a stator and a rotor are unequal, stator core fragments and magnetic poles are asymmetric, static excitation and the like, magnetic fluxes are unbalanced, shaft voltage is generated by the unbalanced magnetic fluxes and shaft cutting, the voltage changes along with the voltage and load of the generator, in addition, the shaft voltage and shaft current generated by the shaft voltage accelerate the aging and deterioration of bearing lubricating oil, the bearing bush is seriously burnt, and the bearing throw is increased. Therefore, it is desirable to provide a detection device capable of effectively detecting the shaft current of the turbine generator, which can be applied to a power plant.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a novel hydroelectric generating set shaft current detection device which is simple in structure, is arranged around a large shaft of a hydroelectric generating set, adopts an induction type detection mode and can effectively detect the shaft current of a hydraulic turbine generator.
The technical scheme of the utility model is as follows:
a novel hydroelectric generating set shaft current detection device comprises a detection box and a display control instrument, wherein the detection box is of a circular box body structure formed by splicing two semi-circular ring bodies, two ends of the two semi-circular ring bodies of the detection box are respectively provided with corresponding connection lugs, and two groups of corresponding connection lugs on the two semi-circular ring bodies of the detection box are respectively connected through bolts; the detection box is internally provided with a detection assembly and a signal receiving and transmitting device, the detection assembly is a permanent magnet ring belt, the permanent magnet ring belt is a circular ring belt structure formed by splicing two semicircular ring belts, and when the two semicircular ring bodies of the detection box are spliced into a complete circular ring box body, two end faces of the two semicircular ring belts of the permanent magnet ring belt are respectively attached; the detection surface of the permanent magnet ring belt extends out of the detection box from the inner ring surface of the detection box, and the signal output end of the permanent magnet ring belt is connected with the signal input end of the display control instrument through a signal receiving and sending device.
The working principle of the technical scheme is as follows:
when the device is installed, firstly, a cross rod is respectively installed on the left side and the right side of a main shaft of a water turbine unit, two ends of the cross rod are required to be fixed, the whole upward surface of the cross rod needs to be a complete plane, then a detection box is installed, two semi-circular ring bodies are placed on the cross rod and fixed on the cross rod through screws, the two semi-circular ring bodies are combined into a complete circular ring box body in a fixing mode, the main shaft of the unit is required to penetrate through the center of the detection box, the Faraday electromagnetic induction law is utilized, as long as induced current is generated on the main shaft of the unit, the induced current can be detected by a permanent magnet ring belt, and then the generated signal is sent to a display and control instrument through a signal receiving and sending device to be displayed and controlled.
The utility model adopts an induction type detection mode, reduces the direct contact with the large shaft of the water turbine, reduces the occurrence of safety accidents, and ensures the reliability and the practicability of equipment.
In a further technical scheme, the connection part of the permanent magnet ring belt and the inner ring surface of the detection box is in sealing connection through epoxy resin, so that the sealing protection performance of the inner components of the detection box is guaranteed, and the risk that the inner components are corroded by water vapor to cause damage is reduced.
In a further technical scheme, the display control instrument comprises a shell, a central processing unit arranged in the shell and a display panel embedded on the surface of the shell, wherein a signal output end of a permanent magnet ring belt is connected with a signal input end of the central processing unit through a signal receiving and sending device, a signal output end of the central processing unit is connected with a signal input end of the display panel and used for displaying detection data, in addition, the central processing unit is also connected with a power plant monitoring system in a current signal output and/or communication signal output mode, the power plant monitoring system is provided by a power plant and judges the shutdown time according to the specific use condition of the power plant; and an alarm module is also arranged in the display and control instrument, and when the central processing unit receives the abnormal signal, the alarm module sends an alarm to realize an alarm function.
In a further technical scheme, the shell of the display and control instrument is made of light plastic materials, so that the shell has sufficient insulation in a use environment.
In a further technical scheme, be equipped with the bleeder vent on the casing of apparent accuse appearance, can improve the inside thermal diffusivity of apparent accuse appearance, prevent the overheated damage of inside components and parts, be equipped with waterproof ventilated membrane on the shells inner wall of apparent accuse appearance, can guarantee that its inside subassembly avoids the corrosion damage of external steam.
In a further technical scheme, be equipped with the port joint of being connected with the signal sending end of signal receiving transmitter on the detection box, the port joint passes through the transmission wire and is connected with the signal input part who shows the accuse appearance, guarantees the insulating nature in the detection box, prevents that water from getting into the detection box and causing the damage to its inside subassembly.
In a further technical scheme, a fireproof coil and a flame-retardant material are further arranged in the detection box, so that the fireproof performance of the detection device can be improved.
The beneficial effects of the utility model are:
1. the utility model adopts an induction type detection mode, reduces the direct contact with the large shaft of the water turbine, reduces the occurrence of safety accidents, and ensures the reliability and the practicability of equipment;
2. the display and control instrument is made of light plastic materials, so that the display and control instrument has enough insulation in a use environment, and the two sides of the display and control instrument are provided with the air holes, so that the heat dissipation performance in the display and control instrument can be improved, and the internal components are prevented from being damaged due to overheating;
3. the water-turbine generator set is arranged for supplying power to the display control instrument, so that the input of electric energy can be further reduced, and energy can be better saved;
4. the detection assembly of the detection box is made of a permanent magnet material, and can detect the current and the voltage of the large shaft of the unit, so that a full foundation is provided for the subsequent analysis of the unit.
Drawings
FIG. 1 is a side view of a novel hydroelectric generating set shaft current detection device according to an embodiment of the present invention;
fig. 2 is a top view of a shaft current detection device of the novel hydroelectric generating set according to an embodiment of the present invention.
Description of reference numerals:
10. a detection cartridge; 11. connecting lugs; 12. a port fitting; 20. a display control instrument; 30. a machine set large shaft; 40. a transmission conductor.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
a novel hydroelectric generating set shaft current detection device is shown in figures 1 and 2 and comprises a detection box 10 and a display control instrument 20, wherein the detection box 10 is of a circular box structure formed by splicing two semi-circular rings, two ends of each semi-circular ring of the detection box 10 are respectively provided with a corresponding connection lug 11, and two groups of corresponding connection lugs 11 on the two semi-circular rings of the detection box 10 are respectively connected through bolts; a detection assembly and a signal receiving and transmitting device are arranged in the detection box 10, the detection assembly is a permanent magnet ring belt, the permanent magnet ring belt is a circular ring belt structure formed by splicing two semicircular ring belts, and when the two semicircular ring bodies of the detection box 10 are spliced into a complete circular ring box body, two end faces of the two semicircular ring belts of the permanent magnet ring belt are respectively attached; the detection surface of the permanent magnetic ring belt extends out of the detection box 10 from the inner ring surface of the detection box 10, and the signal output end of the permanent magnetic ring belt is connected with the signal input end of the display and control instrument 20 through a signal receiving and sending device.
In this embodiment, the display and control instrument 20 includes a housing, a central processing unit disposed in the housing, and a display panel embedded on the surface of the housing, wherein a signal output end of the permanent magnet ring belt is connected to a signal input end of the central processing unit via a signal receiving and transmitting device, a signal output end of the central processing unit is connected to a signal input end of the display panel for displaying detection data, and the central processing unit is further connected to a power plant monitoring system via a current signal output and/or communication signal output manner, the power plant monitoring system is provided by a power plant, and the shutdown time is determined according to the specific use condition of the power plant; an alarm module is further arranged in the display and control instrument 20, and when the central processing unit receives the abnormal signal, an alarm is sent to the alarm module, so that an alarm function is realized.
When the utility model is installed, firstly, a cross bar is respectively installed at the left side and the right side of a large shaft 30 of a water turbine set, the two ends of the cross bar are required to be fixed, the whole upward surface of the cross bar needs to be a complete plane, then a detection box 10 is installed, two semi-circular ring bodies are placed on the cross bar and fixed on the cross bar by screws, the two semi-circular ring bodies are combined into a complete circular ring box body in a fixing mode, the large shaft 30 of the water turbine set is required to pass through the center of the detection box 10, the Faraday electromagnetic induction law is utilized, as long as induced current is generated on the large shaft 30 of the water turbine set, the induced current can be detected by a permanent magnet ring belt, and then the generated signal is sent to a display and control instrument 20 for displaying and controlling through a signal receiving and sending device.
The utility model adopts an induction type detection mode, reduces the direct contact with the large shaft of the water turbine, reduces the occurrence of safety accidents, and ensures the reliability and the practicability of equipment.
In another embodiment, the connection between the permanent magnetic ring belt and the inner ring surface of the detection box 10 is sealed and connected by epoxy resin, so that the sealing protection of the internal components of the detection box 10 is ensured, and the risk of damage caused by water vapor corrosion of the internal components is reduced.
In another embodiment, the housing of the display and control instrument 20 is made of a lightweight plastic material, which can provide sufficient insulation in the environment of use.
In another embodiment, the casing of the display and control instrument 20 is provided with air holes, which can improve the heat dissipation performance inside the display and control instrument 20 and prevent the internal components from being damaged due to overheating, and the inner wall of the casing of the display and control instrument 20 is provided with a waterproof breathable film, which can ensure that the internal components are prevented from being damaged due to corrosion of external water vapor.
In another embodiment, as shown in fig. 1, a port connector 12 connected to a signal transmitting end of a signal receiving and transmitting device is disposed on the detection box 10, and the port connector 12 is connected to a signal input end of the display and control instrument 20 through a transmission wire 40, so as to ensure insulation in the detection box 10 and prevent water from entering the detection box 10 and damaging components inside the detection box 10.
In another embodiment, the detection box 10 is further provided with a fireproof coil and a flame-retardant material, so that the fireproof performance of the detection device can be improved.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. The novel hydroelectric generating set shaft current detection device is characterized by comprising a detection box and a display control instrument, wherein the detection box is of a circular box body structure formed by splicing two semi-circular rings, two ends of each of the two semi-circular rings of the detection box are respectively provided with corresponding connecting lugs, and two groups of corresponding connecting lugs on the two semi-circular rings of the detection box are respectively connected through bolts; the detection box is internally provided with a detection assembly and a signal receiving and transmitting device, the detection assembly is a permanent magnet ring belt, the permanent magnet ring belt is a circular ring belt structure formed by splicing two semicircular ring belts, and when the two semicircular ring bodies of the detection box are spliced into a complete circular ring box body, two end faces of the two semicircular ring belts of the permanent magnet ring belt are respectively attached; the detection surface of the permanent magnet ring belt extends out of the detection box from the inner ring surface of the detection box, and the signal output end of the permanent magnet ring belt is connected with the signal input end of the display control instrument through a signal receiving and sending device.
2. The novel hydroelectric generating set shaft current detection device as claimed in claim 1, wherein the connection between the permanent magnet ring belt and the inner ring surface of the detection box is sealed and connected by epoxy resin.
3. The novel hydroelectric generating set shaft current detection device as claimed in claim 1, wherein the shell of the display and control instrument is made of light plastic material.
4. The novel hydroelectric generating set shaft current detection device as claimed in claim 1, wherein a casing of the display and control instrument is provided with air holes, and a waterproof air permeable membrane is arranged on an inner wall of the casing of the display and control instrument.
5. The novel hydroelectric generating set shaft current detection device as claimed in claim 1, wherein the detection box is provided with a port connector connected with a signal sending end of a signal receiving and sending device, and the port connector is connected with a signal input end of a display and control instrument through a transmission lead.
6. The novel hydroelectric generating set shaft current detection device as claimed in claim 1, wherein a fireproof coil and a flame retardant material are further arranged in the detection box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123186254.1U CN216670103U (en) | 2021-12-17 | 2021-12-17 | Novel hydroelectric generating set axle current detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123186254.1U CN216670103U (en) | 2021-12-17 | 2021-12-17 | Novel hydroelectric generating set axle current detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216670103U true CN216670103U (en) | 2022-06-03 |
Family
ID=81795079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123186254.1U Active CN216670103U (en) | 2021-12-17 | 2021-12-17 | Novel hydroelectric generating set axle current detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216670103U (en) |
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2021
- 2021-12-17 CN CN202123186254.1U patent/CN216670103U/en active Active
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