Radiation alarm
Technical field
The present invention relates to a kind of device that radiation is carried out on-the-spot detection automatically and Realtime Alerts.
Background technology
In power industry, along with new and high technologies such as x-ray imaging detection in non-destructive material inspection extensive applications such as weld seam detection, electric power pylon material evaluations, the safe handling of X ray receives operating personnel's attention day by day.X ray has very strong penetrability and radioactivity, surpasses safe dose, will cause the damage of human tissue cell.The radiation protection monitoring of prior art mainly is the development to radiation protection clothing and personal dosimeter, when meeting with electric power pylon with x-ray imaging detection weldering, does not also have simple and reliable radiation detection warning device.
Summary of the invention
The invention provides a kind of radiation alarm, solved the problem that does not have simple and reliable radiation detection warning device when weldering is met with electric power pylon detecting with x-ray imaging.
The present invention overcomes the above problems through following scheme:
A kind of radiation alarm; Comprise pedestal, alarm lamp and magnet piece; The lamp socket of alarm lamp is arranged on the top board of pedestal, and red Transparent lamp shade is arranged on through screw on the top board of pedestal, in lamp socket, is provided with bulb; Magnet piece is fixedly installed on the base plate of pedestal; Pedestal is provided with battery, flashing relay, photoelectricity isolated tube and radiosensitive triode, and lamp socket links together through two controlled connection terminals of connection lead in the inserts bolt of hollow and flashing relay, and the positive pole of battery is connected with a control terminal of flashing relay; Another control terminal of flashing relay is connected with an output terminal of photoelectricity isolated tube; Another output terminal of photoelectricity isolated tube is connected with the negative pole of battery through switch, and the collector of radiosensitive triode is connected with an input end of photoelectricity isolated tube, and the emitter of radiosensitive triode is connected with another input end of photoelectricity isolated tube.
The glass convex lens of radiosensitive triode are provided with layer of fluorescent powder; Fluorescent powder is the silicate of earth alkali metal; The shell of radiosensitive triode is a jar shape, glass convex lens and the corresponding setting of tube core as base stage, and described battery and pedestal are movably connected.
The present invention has easy and simple to handle, and is highly sensitive, and usable range is wide, can monitor not noticeable locational radiation variation according to the position of field of employment, the scene carried out in radiation detect automatically and Realtime Alerts, guarantees staff's safety.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of radiosensitive triode 7 of the present invention;
Fig. 3 is a circuit principle structure synoptic diagram of the present invention.
Specific embodiment
A kind of radiation alarm; Comprise pedestal 8, alarm lamp 1 and magnet piece 9; The lamp socket 2 of alarm lamp 1 is arranged on the top board of pedestal 8, and red Transparent lamp shade 11 is arranged on through screw 10 on the top board of pedestal 8, in lamp socket 2, is provided with bulb 4; Magnet piece 9 is fixedly installed on the base plate of pedestal 8; Pedestal 8 is provided with battery 17, flashing relay 5, photoelectricity isolated tube 19 and radiosensitive triode 7, and lamp socket 2 links together through the two controlled connection terminals of the connection lead in the inserts bolt 3 of hollow 6 with flashing relay 5, and the positive pole of battery 17 is connected with a control terminal of flashing relay 5; Another control terminal of flashing relay 5 is connected with an output terminal of photoelectricity isolated tube 19; Another output terminal of photoelectricity isolated tube 19 is connected with the negative pole of battery 17 through switch 18, and the collector 16 of radiosensitive triode 7 is connected with an input end of photoelectricity isolated tube 19, and the emitter of radiosensitive triode 7 is connected with another input end of photoelectricity isolated tube 19.
The glass convex lens 12 of radiosensitive triode 7 are provided with layer of fluorescent powder 13; Fluorescent powder 13 is the silicate of earth alkali metal; The shell 15 of radiosensitive triode 7 is a jar shape; Glass convex lens 12 and tube core 14 corresponding settings as base stage, described battery 17 is movably connected with pedestal 8.
The radiosensitive triode of selecting for use 7 has the electric current amplification, radiation-sensitive.Radiosensitive triode 7 is to utilize fluorescent material to receive radiation irradiation to send cold light, makes inner jar type sealing phototriode receive optical radiation and produces electric current, and is high to the susceptibility of radiation.
When there was X-radiation the working site, the layer of fluorescent powder 13 that is provided with on the glass convex lens 12 of radiosensitive triode 7 was generally the silicate of earth alkali metal; Can send chemical cold light, shine on the jar shape sealing phototriode in the pipe, phototriode utilizes the glass convex lens that light is converged; Receive optical radiation control to form photocurrent, consequent photogenerated current gets into emitter by base stage, has amplified and is equivalent to β marking current doubly thereby in collector loop, obtain one; Loop, flashing relay 5 place is connected; Through optical isolation 19, make electric current further amplify, the bulb 4 in the alarm lamp is luminous; Through flashing relay 5, this radiosensitive warning device is sent continue glittering alerting signal.
When being installed in this on-the-spot equipment alarm, the staff should withdraw radiation area, draws warning rope in addition, hangs alarm light 2 meters of safe distances, and the pedestrian crossing should be provided with warning sign.