CN215214417U

CN215214417U - Intelligent bearing of wind power motor

Info

Publication number: CN215214417U
Application number: CN202121486719.2U
Authority: CN
Inventors: 丁晓喜; 陈振宇; 张路科; 谭华平; 曾强; 邵毅敏
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-12-17
Anticipated expiration: 2031-07-01

Abstract

The utility model provides an intelligent bearing of a wind power motor, which comprises a bearing body, wherein the bearing body is positioned on a bearing seat, a bearing end cover is fixedly arranged on the end surface of the bearing body, and an oil sealing ring is arranged between the bearing end cover and the bearing body; the bearing comprises a bearing seat, a bearing end cover, a bearing rotating speed sensor and a sensing module circuit mainboard. This wind-powered electricity generation motor intelligence bearing has accomplished the autonomous electricity generation function through mutually supporting between the hall sensor on the alternative magnetic pole magnetic ring on the oil blanket circle and the bearing frame, has still gathered the rotational speed information and the running direction of bearing simultaneously, has advantages such as passing the route weak point, signal precision height.

Description

Intelligent bearing of wind power motor

Technical Field

The utility model relates to an intelligent bearing field, concretely relates to wind-powered electricity generation motor intelligent bearing.

Background

The wind driven generator has a severe working environment, and the transmission system is easy to break down under the working conditions of low-speed heavy-load, non-stable and strong impact. According to statistics, the blower accidents caused by the bearings account for 45% of the total accidents, and the service state of the blower accidents needs to be accurately monitored. Different from the traditional external bearing monitoring mode, the accurate extraction of the bearing state information cannot be effectively realized due to the influence of the structure of a transmission system, a transmission path and the like. As a novel key component integrating self-sensing and self-diagnosis into a bearing body structure, the intelligent bearing has the advantages of structural integrated design, information sensing principle and intelligent diagnosis method which are widely concerned. The wind driven generator motor spindle bearing is simple and compact in structure, the generator is complex in structure and high in density, the sensor integrated bearing can monitor the real-time state of the bearing without damaging the structure of the bearing body and installing an additional assembly outside the bearing, early fault early warning of the bearing is achieved, and the wind driven generator motor spindle bearing has great practical value.

The existing sensor integrated bearing mostly arranges a sensor on a bearing stator part, and the sensing of the bearing is usually realized based on structural vibration or strain signals. In terms of signals, the measured information comes from the outer ring of the bearing and has a certain distance from the fault source position, and the information cannot reflect the early fault information of the bearing. In terms of structure, the conventional sensor integrated bearing also has the problems of scattered arrangement of functional components, insufficient compactness in design and low integration level, so that a person skilled in the art is urgently needed to solve corresponding technical problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that exists among the above-mentioned prior art, the utility model aims at providing a wind-powered electricity generation motor intelligence bearing.

In order to realize the above purpose of the utility model, the utility model provides an intelligent bearing of a wind power motor, which comprises a bearing body, wherein the bearing body is positioned on a bearing seat, a bearing end cover is fixedly arranged on the end surface of the bearing body, and an oil seal ring is arranged between the bearing end cover and the bearing body; the bearing comprises an oil seal ring, a bearing seat, a bearing body, a sensing module circuit main board, a Hall sensor, an alternating magnetic pole magnetic ring, an oxygen magnet and a bearing rotating speed sensor, wherein the alternating magnetic pole magnetic ring is arranged along the circumferential direction of the oil seal ring, the oxygen magnet with alternately distributed magnetic poles is arranged on the alternating magnetic pole magnetic ring, the sensing module circuit main board is arranged on the circumferential direction of the end face of the bearing seat, the Hall sensor corresponding to the alternating magnetic pole magnetic ring is integrated on the sensing module circuit main board, and when the bearing body rotates, the Hall sensor cuts magnetic induction lines of the alternating magnetic pole magnetic ring to generate electricity and acquires bearing rotating speed information and running direction information;

the bearing end cover is characterized in that a data receiving module circuit main board is arranged on the outer side of the bearing end cover, a through hole is formed in the bearing end cover, the data receiving module circuit main board is connected with the sensing module circuit main board through an interface bunch penetrating through the through hole, bearing rotating speed information and running direction information sent by the sensing module circuit main board are received, and a data reading interface is arranged on the data receiving module circuit main board.

This wind-powered electricity generation motor intelligence bearing has accomplished the autonomous electricity generation function through mutually supporting between the hall sensor on the alternative magnetic pole magnetic ring on the oil blanket circle and the bearing frame, has still gathered the rotational speed information and the running direction of bearing simultaneously, has advantages such as passing the route weak point, signal precision height.

According to the preferable scheme of the intelligent bearing of the wind power motor, a micro temperature sensor and a micro vibration sensor are further integrated on the sensing module circuit main board, and the data receiving module circuit main board is used for amplifying, filtering, storing and transmitting the received temperature information and vibration information.

The intelligent bearing of the wind power motor acquires vibration, temperature and rotating speed information of the bearing through the miniature vibration sensor, the miniature temperature sensor and the Hall sensor which are arranged on the bearing block, completes multi-physical information acquisition of the bearing, and simultaneously completes an autonomous power generation function based on the structure of the bearing block, the oil sealing ring and the bearing end cover and the mutual cooperation between the alternating magnetic pole magnetic ring and the Hall sensor. By adopting the intelligent bearing of the wind power motor, the bearing information can be directly sensed by the sensor, and the intelligent bearing has the advantages of short passing path, more multi-source information, more reliable and accurate signals and higher integration level.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of an intelligent bearing of a wind power motor;

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is a schematic view of a magnetic ring with alternating magnetic poles;

FIG. 4 is a schematic diagram of the distribution of sensors on the main circuit board of the sensing module;

fig. 5 is a schematic distribution diagram of the ring-shaped high-temperature lithium battery and the data reading interface on the circuit board of the data receiving module.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 5, the utility model provides an intelligent bearing for a wind power motor, which comprises a bearing body 5, wherein the bearing body 5 is positioned on a bearing seat 4, a bearing end cover 3 is fixedly arranged on the end surface of the bearing body 5, and an oil seal ring 2 is arranged between the bearing end cover 3 and the bearing body 5; and the alternating magnetic pole magnetic ring 8 is arranged along the circumferential direction of the oil sealing ring 2, and oxygen magnets with alternately distributed magnetic poles are arranged on the alternating magnetic pole magnetic ring 8, and the intervals between the oxygen magnets are the same. In this embodiment, the outer ring of the oil seal ring 2 is in interference fit with the clamping grooves in the alternating magnetic pole magnetic ring 8, and the alternating magnetic pole magnetic ring 8 rotates along with the shaft to generate an alternating magnetic field in the axial direction. A sensing module circuit main board 11 is also arranged on the end surface of the bearing seat 4 in the circumferential direction, in the embodiment, a first abdicating groove is formed on the end surface of the bearing seat 4, the sensing module circuit main board 11 is fixed in the first abdicating groove, and the sensing module circuit main board 11 is preferably a high-temperature silica gel sealing loop circuit board so as to achieve the purposes of resisting high temperature and oil and preventing external impurities from entering; meanwhile, the functions of protecting circuit mainboard components and fixing circuit board components are also achieved, the Hall sensor 9 corresponding to the alternate magnetic pole magnetic ring 8 is integrated on the sensing module circuit mainboard 11, and when the bearing body 5 rotates, the Hall sensor 9 cuts the magnetic induction lines of the alternate magnetic pole magnetic ring 8 to generate electricity, and bearing rotating speed information and running direction information are obtained. The electricity generated by the hall sensor 9 cutting the magnetic induction lines of the alternating magnetic pole magnetic ring 8 can be used for the sensing module circuit main board 11 to work, specifically, a rechargeable battery can be integrated on the sensing module circuit main board 11, the electricity generated by the hall sensor 9 cutting the magnetic induction lines of the alternating magnetic pole magnetic ring 8 is stored in the rechargeable battery, and the rechargeable battery supplies power for the sensing module circuit main board 11.

The bearing end cover 3 outside is provided with data receiving module circuit mainboard 14, has seted up the through-hole on this bearing end cover 3, data receiving module circuit mainboard 14 is connected with perception module circuit mainboard 11 through passing interface 15 bunch 7 of through-hole, receives bearing rotational speed information and the running direction information that perception module circuit mainboard 11 sent, be equipped with data reading interface 15 on the data receiving module circuit mainboard 14, data reading interface 15 can be connected with outside host computer and realize bearing real-time status monitoring. The data receiving module is connected with electricity through a power supply port, and a ring-buckle annular high-temperature lithium battery 6 is further arranged as a standby power supply of the data receiving module. Preferably, a second yielding groove is formed in the outer side of the bearing end cover 3, and the data receiving module circuit main board 14 is embedded in the second yielding groove.

The sensing module circuit main board 11 is further integrated with a micro temperature sensor 12 and a micro vibration sensor 10, wherein the number of the micro vibration sensors 10 is preferably two, and the two micro vibration sensors 10 and the two hall sensors 9 are respectively integrated on the sensing module circuit main board 11 in 180-degree distribution. The sensing module circuit main board 11 performs analog quantity amplification, filtering, storage, transmission processing, power management and the like on the information collected by the hall sensor 9, the miniature temperature sensor 12 and the miniature vibration sensor 10. The data receiving module circuit board 14 receives bearing rotation speed information, running direction information, temperature information and vibration information sent by the sensing module circuit board 11.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An intelligent bearing of a wind power motor comprises a bearing body, wherein the bearing body is positioned on a bearing seat, a bearing end cover is fixedly arranged on the end face of the bearing body, and an oil seal ring is arranged between the bearing end cover and the bearing body; the bearing is characterized in that alternating magnetic pole magnetic rings are arranged along the circumferential direction of the oil sealing ring, oxygen magnets with alternately distributed magnetic poles are arranged on the alternating magnetic pole magnetic rings, a sensing module circuit main board is arranged on the circumferential direction of the end face of the bearing seat, Hall sensors corresponding to the alternating magnetic pole magnetic rings are integrated on the sensing module circuit main board, and when the bearing body rotates, the Hall sensors cut magnetic induction lines of the alternating magnetic pole magnetic rings to generate electricity and acquire bearing rotating speed information and running direction information;

2. The intelligent bearing of claim 1, wherein the sensing module circuit board is further integrated with a micro temperature sensor and a micro vibration sensor, and the data receiving module circuit board amplifies, filters, stores and transmits the received temperature information and vibration information.

3. The intelligent wind-power motor bearing as claimed in claim 1, wherein the oil seal ring outer ring is in interference fit with the slots in the alternating magnetic pole magnetic ring, and the alternating magnetic pole magnetic ring rotates with the shaft.

4. The intelligent wind-power motor bearing according to claim 1, wherein a first abdicating groove is formed in the end face of the bearing seat, and the sensing module circuit main board is fixed in the first abdicating groove.

5. The intelligent wind power motor bearing according to claim 1, wherein a second yielding groove is formed in the outer side of the bearing end cover, and the data receiving module circuit main board is embedded in the second yielding groove.

6. The intelligent bearing of claim 1, wherein the sensing module circuit board is a high temperature silica gel seal loop circuit board.