CN2261623Y

CN2261623Y - Ash level controlling device for microwave carbon detector

Info

Publication number: CN2261623Y
Application number: CN 95245026
Authority: CN
Inventors: 高秀山; 祁枢田; 毛朝阳; 刘古敦; 吕桢; 张渡; 樊堃; 张京夫
Original assignee: XIAN ENERGY WATER TREATMENT NEW TECHNOLOGY DEVELOPMENT Co
Current assignee: XIAN ENERGY WATER TREATMENT NEW TECHNOLOGY DEVELOPMENT Co
Priority date: 1995-08-03
Filing date: 1995-08-03
Publication date: 1997-09-03
Anticipated expiration: 2005-08-03

Abstract

The utility model relates to an ash level control device for microwave measuring carbon instrument, which makes real-time measurement on the carbon content in the fly ashes from boilers. The utility model mainly comprises a lamp of light source and a light activated element at both sides of a glass pipe which conveys fly ashes, an ash ejector which is connected with the outlet of the glass pipe, a motor and a motor control circuit. Owing to a light gathering device arranged in the lamp of light source, light can be gathered into beams and light intensity is enhanced and normal proceed of photoelectric sensing is ensured and blank pipe phenomenon is avoided.

Description

The ash position control device of microwave carbonmeter

The utility model relates to a kind of ash position control device of the microwave carbonmeter that boiler fly ash content is measured in real time.

The existing microwave carbonmeter that boiler flyash carbon content is measured in real time, the WCT type microwave carbonmeter disclosed and commercially available as Chinese patent CN1017261, its flying dust control device all is to be provided with an illuminator and photosensitive tube respectively in the both sides of the quartz glass tube of carrying flying dust, is provided with ash ejector and motor at the endpiece of glass tube.When the ash position in the glass tube surpasses or be lower than control ash position, photosensitive tube by or conducting, control ash discharge motor running or stop, thus make the ash position in the glass tube remain on certain position.But, because the above-mentioned light that illuminator sent is divergent state, do not concentrate, it is lower that light passes the intensity that glass tube shines on the photosensitive tube, particularly also can adhere to some flying dusts more or less on the tube wall of glass tube, therefore, the blank pipe phenomenon usually takes place in the operational process of reality.That is, when the ash position was lower than control ash position, the intensity of the light that in fact photosensitive tube is received was extremely low, and photosensitive tube still is in cut-off state, thereby the ash discharge motor continues to cause the glass tube blank pipe in running

The purpose of this utility model is that above-mentioned existing ash position control device is improved and a kind of ash position control device that the microwave carbonmeter of blank pipe phenomenon can not take place of providing.

The solution that realizes the utility model purpose is: the ash position control device of the microwave carbonmeter that is provided comprise the illuminator that is located at the glass tube both sides of carrying flying dust respectively and light activated element, with ash ejector and drive motor thereof that above-mentioned glass tube endpiece links to each other, above-mentioned light activated element is connected on to be controlled in the on-off circuit that the ash ejector drive motor opens, stops.Improvements of the present utility model are to set up at the illuminator place beam condensing unit.Can make light-ray condensing become a branch of like this, further improve light intensity, be lower than the reliable conducting of light activated element energy when controlling the ash position so that guarantee the grey position of glass tube.

The utility model is owing to taked the optically focused measure, thereby the ash position control stabilization in the glass tube is reliable, and the light emitting diode of available high brightness replaces the common bulb in the existing ash position control device, thereby improved the serviceable life of illuminator, made carbonmeter be able to measure in real time continuously and stably for a long time.

Below in conjunction with accompanying drawing content of the present utility model is illustrated.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the cut-open view at Figure 1A-A place.

Fig. 3 is the control circuit figure of Fig. 1 motor.

As shown in Figure 1 and Figure 2: circular quartz glass tube 1 is positioned at the inner chamber of ash collector 2, and it is fixed among the dissection type bakelite base 3.Boiler fly ash enters glass tube 1 from the upper end of ash collector 2, enters ash ejector 4 from the glass tube lower end again.Ash ejector 4 adopts the screw ash ejector, when motor 5 drives the screw rod rotation, flying dust can be discharged.Have the hole of installation illuminator 6 and light activated element 7 along the diametric(al) of glass tube at the middle part of bakelite base 3.Illuminator 6 adopts high brightness LED, its luminous intensity Iv 〉=9mcd, and peak wavelength is gone into=565nm.Beam condensing unit can adopt versions such as lens, and this example adopts reflecting type convergent bowl 8, and is this simple in structure and effective, and can utilize glass tube 1 itself to make concave and convex lenses, again by adjusting the position of illuminator 6, can make light source assemble bunchy.

The drive motor 5 of the ash ejector in this example adopts slow-speed of revolution reversible electric machine.Big because of its internal resistance, power consumption is little, torque is big, so when overload or the bulky grain flying dust when blocking ash ejector motor can not burn yet, thereby guaranteed the safety of ash position control device.The power of the reversible electric machine that this example adopts is 10～20W, and rotating speed is 35～70 rev/mins, and concrete parameter can be decided according to the ash discharge amount.All the other numberings of Fig. 1: 9-circuit for controlling motor, 10-whirlwind.

The control circuit of drive motor 5 as shown in Figure 3, it is an electronic switch of being made up of triode 11, relay J, protection diode 12, resistance 13 and light activated element 7, wherein the normally closed interlock of relay J is serially connected in the loop of motor 5.When the ash position in the glass tube was lower than control ash position, light passed glass tube and shines on the light activated element 7, light activated element 7 conductings, and triode 11 conductings, the relay J action, motor 5 stops; Otherwise motor rotates, and the flying dust in the glass tube is controlled on the certain position.

Claims

1, the ash position control device of microwave carbonmeter, comprise the illuminator (6) and light activated element (7), the ash ejector (4) that links to each other with above-mentioned glass tube endpiece and drive motor (5) thereof that are located at glass tube (1) both sides of carrying flying dust respectively, above-mentioned light activated element (7) is connected in the on-off circuit that control ash ejector drive motor opens, stops, and it is characterized in that locating to be provided with a beam condensing unit at illuminator (6).

2, ash position control device as claimed in claim 1 is characterized in that said beam condensing unit is reflecting type convergent bowl (8).

3, ash position control device as claimed in claim 1 or 2 is characterized in that illuminator (6) adopts light emitting diode, its luminous intensity Iv 〉=9mcd, and peak wavelength is gone into=565nm.

4, ash position control device as claimed in claim 1 or 2 is characterized in that drive motor (5) is a slow-speed of revolution reversible electric machine.

5, ash position control device as claimed in claim 3 is characterized in that drive motor (5) is a slow-speed of revolution reversible electric machine.