CN202178680U

CN202178680U - Birotor motor capable of measuring floating bearing temperature

Info

Publication number: CN202178680U
Application number: CN201120299864XU
Authority: CN
Inventors: 刘卫; 王文亮
Original assignee: Guodian United Power Technology Co Ltd
Current assignee: Guodian United Power Technology Co Ltd
Priority date: 2011-08-17
Filing date: 2011-08-17
Publication date: 2012-03-28
Anticipated expiration: 2021-08-17

Abstract

The utility model discloses a birotor motor capable of measuring the floating bearing temperature. On the basis of a conventional birotor motor structure, a position is defined as a temperature measuring point (7) on an outer side of an outer rotor support (12), and the position has the nearest transmission distance with a floating bearing (6). An infrared temperature measuring probe (8) or (9) is arranged on a corresponding position of an outer shell motor base (1), and the corresponding position is vertically opposite to the position of the temperature measuring point (7). The birotor motor adopts the infrared temperature measurement method to indirectly measure the temperature of the floating bearing, thus overcoming the difficulty existing in a conventional method which uses a temperature sensor to directly measure the temperature. Besides, the measurement is simple, and the measuring signal is reliable, at the same time, the installation of the infrared temperature measuring probe is convenient without being influenced by the space limitation of the motor, and the maintenance is easy.

Description

The double-rotor machine that a kind of floating bearing temperature can be surveyed

Technical field

The utility model relates to design of electrical motor and applied technical field, particularly, relates to the double-rotor machine that a kind of floating bearing temperature can be surveyed.

Background technology

At present, along with the fast development of hybrid power system and wind generator system, the application of double-rotor machine is also more and more.Conventional motor generally includes only a stator and a rotor, no matter is direct current machine, synchronous machine, or asynchronous machine, all has only a mechanical axis input or output port.Double-rotor machine began to be applied in recent years, and this double-rotor machine has two mechanical axis, can independent operating because of the inside and outside structure of its motor, can realize the independent delivery of two mechanical axis energy.This new type double rotor electric machine can be realized the stepless time adjustment performance; And reduced the volume and weight of motor device greatly, improved operating efficiency, can satisfy requirements of saving energy; Superior runnability is arranged; Therefore, in hybrid vehicle, wind generator system, the propelling of mixing naval vessel and mining machinery drive system etc., good prospects for application is arranged.At present, theoretical ripe double-rotor machine mainly contains four kinds: birotor is with-asynchronous machine, squirrel-cage double-rotor machine, to changeing dual rotor permanent magnetic motor and brushless, permanently double-rotor machine.

Double-rotor machine is measured the temperature of its floating bearing with conventional temperature sensor, and following difficulty is arranged: the first, and be the difficult installation of limitation that temperature sensor receives the space; The second, temperature sensor is not easy to safeguard; The 3rd, the temperature sensor measurement value need extract through mechanical axis hole and slip ring, and transmission signals receives the interference of required alternating current in the winding in the axis hole easily, and it is also unreliable to adopt slip ring to draw the temperature signal of measurement.

The utility model content

The purpose of the utility model is to overcome the shortcoming and defect of above-mentioned prior art; A kind of double-rotor machine of measuring the floating bearing temperature is provided; Through the temperature of infrared indirect measurement floating bearing, can overcome and utilize temperature sensor directly floating bearing to be carried out difficult, the interference problem of installation, maintenance lead-in wire inconvenient and that need utilize the slip ring lead-in wire to bring that thermometric exists.

The technical scheme that realizes above-mentioned purpose is following:

The double-rotor machine that a kind of floating bearing temperature can be surveyed; External rotor mechanical axis, internal rotor mechanical axis are installed in respectively in the static bearing of support of shell support; External rotor support through iron and steel material quality between external rotor and the external rotor mechanical axis is connected; Internal rotor is connected with the internal rotor mechanical axis; External rotor support and internal rotor mechanical axis stretch between the shaft end in the shell support and are connected through floating bearing, and leaving the floating bearing transmission range outside on the rotor field spider lateral surface is the temperature survey point the most nearby, with the vertical corresponding shell support of said temperature survey point on corresponding site infrared temperature probe is installed.

Compared with prior art, the utlity model has following beneficial effect:

The utility model is installed infrared temperature probe through the appropriate location at existing double-rotor machine shell support; Adopt the infrared measurement of temperature method to measure the temperature of floating bearing indirectly; Overcome the difficulty that exists in traditional employing temperature sensor direct temperature measurement method; Measure simply, and measuring-signal is reliable relatively; Simultaneously, infrared temperature probe is easy for installation, not influenced by the limited space property of motor, is convenient to safeguard.

Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.

Description of drawings

Fig. 1 can measure the structural representation of the double-rotor machine of floating bearing temperature for the utility model.

Embodiment

Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.

As shown in Figure 1; An embodiment of the double-rotor machine that can survey for the floating bearing temperature; The structure of general double-rotor machine is: external rotor mechanical axis 2, internal rotor mechanical axis 4 are installed in respectively in the static bearing 11,10 of support of shell support 1; External rotor support 12 through iron and steel material quality between external rotor 3 and the external rotor mechanical axis 2 is connected; Internal rotor 5 is connected with internal rotor mechanical axis 4, and external rotor support 12 and internal rotor mechanical axis 4 stretch between the shaft end in the shell support 1 and be connected through floating bearing 6.Wherein, external rotor 3 is supported on the static bearing 11 of support and floating bearing 6 of shell support 1, can rotate freely; Internal rotor 5 is supported on the static bearing 10 of support of shell support 1, equally also can rotate freely.

Measure the temperature of floating bearing 6 for ease; Can adopt the method for infrared indirect temperature-measuring to measure; As shown in Figure 1; On the basis of above-mentioned electric machine structure, be temperature survey point 7 the most nearby from floating bearing 6 transmission ranges on rotor field spider 12 lateral surfaces outside, with the vertical corresponding shell support 1 of temperature survey point 7 on corresponding site infrared temperature probe 8 or 9 are installed.

Adopt the principle of said structure thermometric to be: owing to receive the restriction of double-rotor machine structure; Adopt the infrared temperature that can not directly measure floating bearing 6; Because floating bearing 6 is to adopt the external rotor support 12 of iron and steel material quality to be connected with external rotor 3; So can through on the external rotor support 12 of measuring iron and steel material quality from the nearest temperature survey point 7 of floating bearing 6, come to obtain indirectly the temperature of floating bearing 6.Influenced by the iron and steel heat radiation, the temperature of the temperature of temperature survey point 7 and floating bearing 6 may have point tolerance a little, and in most cases measured value may be less than normal relatively, can revise the temperature value that obtains more real floating bearing 6.

What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.

Claims

1. double-rotor machine that the floating bearing temperature can be surveyed; External rotor mechanical axis (2), internal rotor mechanical axis (4) are installed in respectively in the static bearing of support (11), (10) of shell support (1); External rotor support (12) through iron and steel material quality between external rotor (3) and the external rotor mechanical axis (2) is connected; Internal rotor (5) is connected with internal rotor mechanical axis (4); External rotor support (12) stretches between the interior shaft end of shell support (1) with internal rotor mechanical axis (4) and is connected through floating bearing (6), it is characterized in that:

Outside on rotor field spider (12) lateral surface from floating bearing (6) transmission range the most nearby for temperature survey point (7), with the vertical corresponding shell support (1) of said temperature survey point (7) on corresponding site infrared temperature probe (8) or (9) are installed.