CN2070439U

CN2070439U - Infrared ray axle temp. transducer

Info

Publication number: CN2070439U
Application number: CN 89213428
Authority: CN
Inventors: 纪宜群; 葛天仕; 王松淮; 吴棠轩; 隋正民; 严金贵; 庞立民
Original assignee: GUANGHAN COMMUNICATION SIGNAL FACTORY CHENGDU RAILWAY BUREAU
Current assignee: GUANGHAN COMMUNICATION SIGNAL FACTORY CHENGDU RAILWAY BUREAU
Priority date: 1989-12-29
Filing date: 1989-12-29
Publication date: 1991-01-30

Abstract

The utility model discloses a railway special infrared ray axle temperature transducer for detecting the hot box of an operating train vehicle, preventing the shaft burning accident of the operating train vehicle and ensuring the safety of transportation. The utility model is mainly characterized in that an infrared element receives the surface radiation energy of the outer housing of a shaft box, which makes that the temperature of a grating piece is kept lower than the surface temperature of the shaft box all along. The utility model has the advantages that a semiconductor refrigeration device can carry off the heat quantity of a grating stator fixed ring, which reduces the temperature of the grating stator fixed ring; taking the measure of heat insulation, the infrared ray axle temperature transducer only makes the small-range local refrigeration to the stator fixed ring part, saving the energy consumption of the refrigeration; the outer housing is taken as a radiator, and the heat quantity generated by the refrigeration device is conducted to the outer housing, ensuring the effect of refrigeration.

Description

The infrared axle temperature sensor

The utility model relates to a kind of infrared ray sensor that running train vehicle hot box prevents that hot box accident from taking place of surveying.It is applicable to grating temperature as the sensor of surveying background.

The at present domestic probe that generally uses, grating is contained in infrared ray responsive element front, and grating is closed the background of axle box surface temperature as a comparison when surveying, and requiring grating temperature should be lower than the axle box temperature system could correct work.Because probe generally will be contained in the shell of sealing, therefore, place the grating radiating condition difference in the shell to have thermal inertia.When environment temperature descends suddenly, the axle box surface temperature also descends thereupon, temperature can not lower at once in the probing shell because grating places, just may be higher than the axle box surface temperature, this moment is if carry out axle temperature detection and opposite signal will occur, can't handle and differentiation causes system's cisco unity malfunction.

Task of the present utility model is to overcome the existing weak point of above-mentioned existing procucts, designs a kind of infrared axle temperature sensor, reaching local cooling, saves the target of refrigeration energy consumption.

The utility model adopts following design proposal to be achieved.

A kind of infrared axle temperature sensor, it is characterized in that being equipped with on the grating stator set collar semiconductor cooler, " U " shape heat radiator also is housed on this semiconductor cooler, front end at grating stator set collar is equipped with the grating moving plate, the rear end of infrared components and grating stator set collar joins, and jacket is housed therebetween, and preceding lens barrel is fixed on the panel by O-ring seal, infrared components is fixed in the integral support combination, and panel connects and composes this sensor by screw and shell.

Accompanying drawing 1 is this sensor general assembly drawing, and its each label is:

1, infrared components; 2, jacket; 3, grating stator set collar; 4, " U " shape heat radiator; 5, semiconductor cooler; 6, grating moving plate; 7, shell; 8, panel; 9, preceding lens barrel; 10, O-ring seal; 11, integral support combination:

Accompanying drawing 2 is this sensor optical path figure, and its each title is:

12, germainium lens; 13, lenticular lenses; 14, sulfuration zinc metal sheet.

Below in conjunction with accompanying drawing embodiment is described.

As shown in Figure 1, infrared components 1 is fixed in the integral support combination 11 (passing through screw), front end at infrared components 1 is a jacket 2, front end at jacket 2 is equipped with grating stator set collar 3, this grating stator set collar 3 is made up of lenticular lenses 13, semiconductor cooler 5 is equipped with in upper end at grating stator set collar 3, and " U " shape heat radiator 4 is housed on it again.On the preceding lens barrel 9 sulphur spare zinc metal sheet 14 is housed, this preceding lens barrel 9 is fixed on the panel 8 by O-ring seal 10, and panel 8 constitutes these sensors by the nail of wriggling with shell 7.

Accompanying drawing 2 is this sensor optical path figure, and as shown in Figure 2, infrared components 1 receives the infrared energy that the train axle box surface temperature width of cloth is penetrated by sulfuration zinc metal sheet 14, lenticular lenses 13 and germainium lens 12.

The advantage of this sensor is:

1, adopts semiconductor cooler 5, take away the heat on the grating stator retainer ring 3, reduce the temperature on it;

2, take provision for thermal insulation, grating stator retainer ring 3 is carried out among a small circle local refrigeration, to save the refrigeration energy consumption;

3, be radiator with shell 7, the heat that semiconductor cooler 5 is sent is transmitted on the shell 7 and distributes, and has guaranteed cooling effect;

4, this sensor only consumes cooling power below 3.5 watts by-45 ℃ to 60 ℃ low, high temperature row row test, and it is about below 5 ℃ just to make the temperature of lenticular lenses 13 be lower than the temperature of shell 7.

The infrared energy that each axle box surface width of cloth of picked-up is penetrated in sensor is installed in the protector of rail both sides changes it into corresponding electric signal, can differentiate after treatment to have or not the train hot box.