CN218765687U

CN218765687U - Hydraulic generator rotor collecting ring and magnetic pole optical fiber temperature sensor

Info

Publication number: CN218765687U
Application number: CN202222722386.XU
Authority: CN
Inventors: 董永成; 何丽
Original assignee: Shenzhen Akefa Advanced Technology Co ltd
Current assignee: Shenzhen Akefa Advanced Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-03-28
Anticipated expiration: 2032-10-17

Abstract

The utility model relates to a high voltage power equipment secondary control field, concretely relates to hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor, including collecting ring and magnetic pole coil, the inboard of collecting ring is provided with the slotted hole insulation board, the front of slotted hole insulation board is provided with insulating clamp plate, insulating clamp plate is connected with slotted hole insulation board through four groups of screws, the bottom of magnetic pole coil is provided with the magnetic pole insulation board, slotted hole insulation board and the inside of magnetic pole insulation board all are provided with the sensor; the sensor is from last down to constitute by temperature-sensing probe, sensor optical cable and fiber connector in proper order, the inside of fluting hole insulation board and magnetic pole insulation board all is provided with temperature-sensing probe, compares with current hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor, the utility model discloses a design can promote hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor's whole fastness, accurate nature and practicality.

Description

Hydraulic generator rotor collecting ring and magnetic pole optical fiber temperature sensor

Technical Field

The utility model relates to a high voltage power equipment secondary control field, concretely relates to hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor.

Background

The rotor of the hydraulic generator has a strong magnetic field and is a high-speed rotating part, and in the running hydraulic generator, turn-to-turn short circuit faults of a rotor winding account for the total number of the faults of the motor, most of the hydraulic generators have the fault or have the fault, and the turn-to-turn short circuit of the rotor excitation winding is a common electrical fault of the generator. At present, no effective technical means is available for realizing temperature online monitoring, and identification and early warning of rotor faults are always difficult problems in the industry and problems to be solved urgently.

The prior art method for measuring the temperature of the rotor generally adopts a non-contact infrared camera to monitor the surface temperature of the rotor in operation, and the method can only see the surface temperature of the rotor, has low accuracy and stability and cannot monitor a core heating point. In some cases, only the optical fiber temperature sensor is used for monitoring the temperature of the rotor magnetic pole, the collector ring and other positions in real time, but the optical fiber temperature sensor is used for realizing the temperature monitoring in a secondary processing mode of a bare probe type sensor. A special sensor which is not designed for a specific application scene cannot generally ensure high-standard temperature measurement performance and long-term operation reliability in the aspects of optical cable structures, probe packaging and mechanical properties.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a hydro-generator rotor collecting ring and magnetic pole optical fiber temperature sensor comprises a collecting ring and a magnetic pole coil, wherein a slotted hole insulating plate is arranged on the inner side of the collecting ring, an insulating pressing plate is arranged on the front side of the slotted hole insulating plate, the insulating pressing plate is connected with the slotted hole insulating plate through four groups of screws, a magnetic pole insulating plate is arranged at the bottom of the magnetic pole coil, and sensors are arranged inside the slotted hole insulating plate and the magnetic pole insulating plate;

the sensor comprises a temperature sensing probe, a sensor optical cable and an optical fiber connector from top to bottom in sequence, the temperature sensing probe is arranged in the slotted hole insulation board and the magnetic pole insulation board, the temperature sensing probe comprises an upper cover plate and a probe base, a positioning groove is formed in the probe base, and a temperature sensing substance is arranged in the sensor optical cable extending to the positioning groove.

As the utility model discloses preferred scheme, the width of constant head tank is greater than the width of sensor cable.

As the utility model discloses preferred scheme, collecting ring and the corresponding position department of screw set up threaded hole.

As the utility model discloses preferred scheme, the locating hole has been seted up with the corresponding position department of temperature sensing probe to the fluting hole insulation board, the fluting hole insulation board has been seted up with the corresponding position department of sensor optical cable and has been forced the dead slot.

As the utility model discloses preferred scheme, the penetration hole has been seted up to insulating clamp plate and the corresponding position department of screw.

As the utility model discloses preferred scheme, the sensor mounting hole has been seted up with the corresponding position department of temperature-sensing probe to the magnetic pole insulation board, sensor mounting hole diameter is greater than the diameter of temperature-sensing probe.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in, through the cooperation design of sensor, fluting hole insulation board and magnetic pole insulation board for temperature-sensing probe can the sensor fix respectively on the collecting ring with magnetic pole coil's inside, make fixedly more firm, simultaneously temperature-sensing probe respectively with collecting ring and magnetic pole coil direct contact, make the temperature measurement more accurate and respond soon, make hydraulic generator rotor collecting ring and magnetic pole optical fiber temperature sensor's fastness and precision obtain promoting greatly.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the current collecting ring structure of the present invention;

fig. 3 is a schematic diagram of the structure of the magnetic pole coil of the present invention.

Fig. 4 is a schematic diagram of the sensor structure of the present invention.

Fig. 5 is a schematic view of the structure of the temperature sensing probe of the present invention.

Fig. 6 is the utility model discloses slotted hole insulation board and insulating clamp plate structure sketch map.

In the figure: 1. a collector ring; 101. a threaded hole; 2. a pole coil; 3. a slotted hole insulating plate; 301. positioning holes; 302. a forced air groove; 4. an insulating platen; 401. a through hole; 5. a screw; 6. a magnetic pole insulating plate; 601. a sensor mounting hole; 7. a sensor; 701. a temperature sensing probe; 702. a sensor cable; 703. an optical fiber connector; 704. an upper cover plate; 705. a probe base; 706. positioning a groove; 707. a temperature sensitive substance.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the invention, a number of embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the invention may be embodied in many different forms and is not limited to the embodiments described herein, but rather these embodiments are provided so as to render the disclosure more thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Examples

Referring to fig. 1-6, the present invention provides a technical solution:

the utility model provides a hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor, includes collecting ring 1 and magnetic pole coil 2, and the inboard of collecting ring 1 is provided with slotted hole insulation board 3, and the front of slotted hole insulation board 3 is provided with insulating clamp plate 4, and insulating clamp plate 4 is connected with slotted hole insulation board 3 through four screws 5 of group, and the bottom of magnetic pole coil 2 is provided with magnetic pole insulation board 6, and slotted hole insulation board 3 all is provided with sensor 7 with the inside of magnetic pole insulation board 6.

In this embodiment, the implementation scenario specifically includes: in the use, fix the interior survey at collecting ring 1 with fluting hole insulation board 3 and insulating pressing plate 4 through screw 5, fix sensor 7 in the inside of fluting hole insulation board 3 simultaneously, make sensor 7 and collecting ring 1 direct contact, fix the sensor 7 in the inside of magnetic pole insulation board 6 through magnetic pole insulation board 6 simultaneously, make sensor 7 and magnetic pole coil 2, thereby make the temperature measurement of sensor 7 and collecting ring 1 and magnetic pole coil 2 more accurate and response fast, whole operation flow is simple convenient, compare with current hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor, the utility model discloses a design can promote hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor's whole fastness, accurate and practicality.

Firstly, referring to fig. 4-5, a sensor 7 is composed of a temperature sensing probe 701, a sensor optical cable 702 and an optical fiber connector 703 from top to bottom in sequence, the temperature sensing probe 701 is disposed inside both a slotted hole insulating plate 3 and a magnetic pole insulating plate 6, the temperature sensing probe 701 is used for fixing the temperature to be detected at the position to be detected, the outline of the schematic diagram is circular, the shape of the schematic diagram can be changed according to a fixed mode, and can also be rectangular, polygonal and the like, the sensor optical cable 702 is used for bidirectionally transmitting excitation light for exciting the temperature sensing probe 701 or providing excitation light of an original reference spectrum and signal light with a temperature signal, the optical fiber connector 703 is used for connecting the sensor 7 into a demodulation device directly or through a switching optical cable, the temperature sensing probe 701 is composed of an upper cover plate 704 and a probe base 705, a positioning groove 706 is disposed inside the probe base 705, the sensor optical cable 702 is placed into the probe base, the probe base 705 and the upper cover plate are encapsulated into a whole by using epoxy glue, the sensor optical cable 702 is provided with a temperature sensing substance 707, the width of the positioning groove 706 is greater than the width of the sensor optical cable 702, the substance 707 is a substance or a substance which can change with an environmental temperature change, a gallium arsenide crystal structure, a temperature sensing rotor or a temperature sensing optical fiber grating structure, and a temperature measuring rotor can be more accurately improved by a temperature measuring ring.

Referring to fig. 2, 3, 5 and 6, a threaded hole 101 is formed in a position of the collecting ring 1 corresponding to the screw 5, a positioning hole 301 is formed in a position of the slotted hole insulation plate 3 corresponding to the temperature sensing probe 701, a hollow-approaching groove 302 is formed in a position of the slotted hole insulation plate 3 corresponding to the sensor optical cable 702, the screw 5 penetrates through the slotted hole insulation plate 3 and the insulation pressing plate 4 to fix the sensor 7 on the collecting ring 1, a penetrating hole 401 is formed in a position of the insulation pressing plate 4 corresponding to the screw 5, a sensor mounting hole 601 is formed in a position of the magnetic pole insulation plate 6 corresponding to the temperature sensing probe 701, the diameter of the sensor mounting hole 601 is larger than that of the temperature sensing probe 701, the number of the sensor mounting holes 601 is determined by the number of the sensors 7, the sensors 7 are placed in the sensor mounting holes 601 of the magnetic pole insulation plate 6 to press down the magnetic pole coils 2, and the magnetic pole insulation plates 6 and the magnetic pole coils 2 are made of glue, so that the firmness of the collecting ring and the hydraulic generator rotor temperature sensor is greatly improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic generator rotor collecting ring and magnetic pole optic fibre temperature sensor, includes collecting ring (1) and magnetic pole coil (2), its characterized in that: a slotted hole insulation board (3) is arranged on the inner side of the collecting ring (1), an insulation pressing board (4) is arranged on the front surface of the slotted hole insulation board (3), the insulation pressing board (4) is connected with the slotted hole insulation board (3) through four groups of screws (5), a magnetic pole insulation board (6) is arranged at the bottom of the magnetic pole coil (2), and sensors (7) are arranged inside the slotted hole insulation board (3) and the magnetic pole insulation board (6);

sensor (7) are from last down to constitute by temperature sensing probe (701), sensor optical cable (702) and fiber connector (703) in proper order, slotted hole insulation board (3) all are provided with temperature sensing probe (701) with the inside of magnetic pole insulation board (6), temperature sensing probe (701) comprise upper cover plate (704) and probe base (705), constant head tank (706) have been seted up to the inside of probe base (705), sensor optical cable (702) extend to the inside of constant head tank (706) and are provided with temperature sensing material (707).

2. The hydro-generator rotor collecting ring and magnetic pole optical fiber temperature sensor according to claim 1, characterized in that: the width of the positioning slot (706) is greater than the width of the sensor cable (702).

3. The hydro-generator rotor collecting ring and magnetic pole optical fiber temperature sensor according to claim 1, characterized in that: and a threaded hole (101) is formed in the position of the collecting ring (1) corresponding to the screw (5).

4. The hydro-generator rotor collecting ring and magnetic pole optical fiber temperature sensor according to claim 1, characterized in that: the positioning hole (301) is formed in the position, corresponding to the temperature sensing probe (701), of the slotted hole insulating plate (3), and the forced empty groove (302) is formed in the position, corresponding to the sensor optical cable (702), of the slotted hole insulating plate (3).

5. The hydro-generator rotor collecting ring and magnetic pole optical fiber temperature sensor according to claim 1, characterized in that: and penetrating holes (401) are formed in the positions, corresponding to the screws (5), of the insulating pressing plates (4).

6. The hydro-generator rotor collecting ring and magnetic pole optical fiber temperature sensor according to claim 1, characterized in that: the magnetic pole insulating plate (6) is provided with a sensor mounting hole (601) at a position corresponding to the temperature sensing probe (701), and the diameter of the sensor mounting hole (601) is larger than that of the temperature sensing probe (701).