CN202395608U

CN202395608U - Installation structure of motor temperature sensor

Info

Publication number: CN202395608U
Application number: CN201120515559XU
Authority: CN
Inventors: 何海军
Original assignee: Bombardier CPC Propulsion System Co Ltd
Current assignee: Bombardier NUG Propulsion System Co Ltd
Priority date: 2011-12-13
Filing date: 2011-12-13
Publication date: 2012-08-22
Anticipated expiration: 2021-12-13

Abstract

The utility model discloses an installation structure of a motor temperature sensor, which comprises a motor housing, a stator and a rotor, wherein the stator comprises windings and an iron core; the installation structure also comprises a temperature sensor fixing block and a temperature sensor, wherein the temperature sensor fixing block is fixedly connected with the motor housing; the neck of the temperature sensor is arranged in a sensor installing hole of the temperature sensor fixing block; the temperature sensing end of the temperature sensor penetrates through the motor housing to be inserted into a sensor insertion hole of the iron core; and the temperature sensor is fixedly connected with the temperature sensor fixing block. Along the axial direction of the motor, the temperature sensor is installed in a place which is 10-30mm far away from the end part of the iron core; and along the radial direction of the motor, the axial line of the temperature sensor is positioned at the center of two adjacent windings of the stator. The installation structure also comprises heat conduction silicone gel which is filled between the temperature sensor and the temperature sensor fixing block and between the motor housing and the iron core. The installation structure has the advantages of simplicity, convenience for replacing the temperature sensor, good heat conduction property of heat conduction silicone grease because the heat conduction capacity of the iron core is better than that of a motor winding, and high temperature sensing precision of the temperature sensor.

Description

A kind of motor temperature sensor fixing structure

Technical field

The utility model belongs to mechanical manufacturing field, particularly is embedded in the mounting structure of the temperature sensor that thermometric is used in the locomotive traction motor.

Background technology

The temperature sensor that thermometric is used in the conventional locomotive traction electric machine generally is embedded in the motor windings, and the traction electric machine single-machine capacity constantly increases at present, and the power loss that produces during operation also continues to increase; It is serious to make that the motor feels hot, and motor windings is through behind the vacuum paint dipping, and temperature sensor has just been suffered at winding by " curing "; Maybe need change if temperature sensor breaks down, we will dismantle motor, the insulating barrier of cutout stator winding; Again lay temperature sensor; The workload of changing is very big, and has insulating barrier and space in the coil of motor windings, and the capacity of heat transmission is influenced; Temperature sensor does not detect actual coil temperature, causes the temperature sensor temperature measurement accuracy not high.

Summary of the invention

It is a kind of simple in structure that the purpose of the utility model is to provide, and changes the motor temperature sensor fixing structure convenient, that temperature measurement accuracy is high.

In order to achieve the above object; The technical scheme of the utility model is: a kind of motor temperature sensor fixing structure, comprise motor case, stator and rotor, and stator comprises winding and iron core; This structure also comprises temperature sensor fixed block and temperature sensor; The temperature sensor fixed block is fixedly connected with motor case, and the neck of temperature sensor is contained in the transducer installing hole of temperature sensor fixed block, and the thermometric end of temperature sensor passes motor case; Insert in the transducer jack unshakable in one's determination, temperature sensor is fixedly connected with the temperature sensor fixed block;

The installation site of temperature sensor be along motor axially for core end 10-30mm, along the central authorities that radially are positioned at two adjacent windings of stator of motor for the axis of temperature sensor apart from stator.

This structure also comprises heat transfer silica gel, and heat transfer silica gel is filled between the transducer installing hole and temperature sensor of temperature sensor fixed block, between motor case and the temperature sensor, and between the transducer jack and temperature sensor unshakable in one's determination.

The utlity model has following advantage; The utility model is bonded in temperature sensor in the temperature sensor installing hole of temperature sensor fixed block and in the temperature sensor jack unshakable in one's determination with the good heat transfer silicone grease of thermal conductivity; Temperature sensor is fixedly connected with the temperature sensor fixed block; If temperature sensor breaks down and maybe need change, only need that temperature sensor is disassembled replacing and get final product; Again because the capacity of heat transmission unshakable in one's determination is stronger than machine winding coil; Heat transfer silicone grease good heat conductivity; Therefore temperature sensor can accurately measure the initial temperature of motor, even behind electric motor starting, also can accurately monitor the real time temperature in the motor; Mounting structure is simple, and replacing is convenient, temperature measurement accuracy is high.

Description of drawings

Fig. 1 is the front elevational schematic of embodiment 1;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the enlarged drawing of B among Fig. 1;

Fig. 4 is a C-C cutaway view among Fig. 3.

Embodiment

Below in conjunction with accompanying drawing the utility model is done explanation in further detail.

As depicted in figs. 1 and 2, a kind of motor temperature sensor fixing structure comprises motor case 1, stator 2 and rotor 3; Stator 2 comprises winding 2-1 and 2-2 unshakable in one's determination; This structure also comprises temperature sensor fixed block 5 and temperature sensor 6, and temperature sensor fixed block 5 is fixing with motor case 1 welding, certainly; Temperature sensor fixed block 5 also can adopt screw to be connected with motor case 1, and perhaps alternate manner is fixedly connected; The neck of temperature sensor 6 is contained in the transducer installing hole of temperature sensor fixed block 5; The thermometric end of temperature sensor 6 passes motor case 1; Insert in the transducer jack of 2-2 unshakable in one's determination, temperature sensor 6 and temperature sensor fixed block 5 are connected by screw.Certainly, temperature sensor 6 also can be connected with dowel fixes with temperature sensor fixed block 5, perhaps otherwise is fixedly connected.

Like Fig. 3 and shown in Figure 4, the installation site of temperature sensor 6 be along motor axially for 2-2 unshakable in one's determination end 10-30mm, along the central authorities that radially are positioned at two adjacent winding 2-1 of stator 2 of motor for the axis of temperature sensor 6 apart from stator 2.

This structure also comprises heat transfer silica gel 7, and heat transfer silica gel 7 is filled between the transducer installing hole and temperature sensor 6 of temperature sensor fixed block 5, between motor case 1 and the temperature sensor 6, and between the transducer jack and temperature sensor 6 of 2-2 unshakable in one's determination.

Claims

1. a motor temperature sensor fixing structure comprises motor case (1), stator (2) and rotor (3), and stator (2) comprises winding (2-1) and (2-2) unshakable in one's determination, it is characterized in that:

A, also comprise temperature sensor fixed block (5) and temperature sensor (6); Temperature sensor fixed block (5) is fixedly connected with motor case (1); The neck of temperature sensor (6) is contained in the transducer installing hole of temperature sensor fixed block (5); The thermometric end of temperature sensor (6) passes motor case (1), inserts in the transducer jack of (2-2) unshakable in one's determination, and temperature sensor (6) is fixedly connected with temperature sensor fixed block (5);

The installation site of b, temperature sensor (6) be along motor axially for iron core (2-2) end 10-30mm, along the central authorities that radially are positioned at two adjacent windings (2-1) of stator (2) of motor for the axis of temperature sensor (6) apart from stator (2).

2. motor temperature sensor fixing structure according to claim 1; It is characterized in that: also comprise heat transfer silica gel (7); Heat transfer silica gel (7) is filled between the transducer installing hole and temperature sensor (6) of temperature sensor fixed block (5), between motor case (1) and the temperature sensor (6), and between the transducer jack and temperature sensor (6) of (2-2) unshakable in one's determination.