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Transmission source device

A transmission source and transmission hole technology, applied in the direction of using radiation for material analysis, etc., can solve the problems of radiation exposure danger, the transmission source cannot be automatically reset, and the shielding thickness is small, so as to achieve the effect of reducing the dose received.

Active Publication Date: 2015-06-17
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The conventional transmission source device has a transmission hole on the lead shielding body, and a movable stopper is installed outside the transmission hole to realize the switch of the transmission source. However, the movable stopper is generally controlled by a push rod motor. The transmission source cannot be automatically reset, and the risk of radiation exposure is prone to occur; in addition, the thickness of the movable stopper is smaller than the shielding thickness in other directions, and it is impossible to achieve all-round equivalent shielding

Method used

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Embodiment Construction

[0017] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0018] Transmission source devices such as figure 1 , the device includes a push rod 1, a lead shielding body 5 and a lead shielding rod 3 with a stainless steel shell, a transmission hole 6 is opened on the lead shielding body, an electromagnet 2 is fixedly connected to the bottom of the push rod 1, and the lead shielding rod 3 is located directly below the electromagnet 2, and realizes the connection and separation of the lead shielding rod 3 and the electromagnet 2 under the power-on and power-off conditions, and a closed-source shielding block 7 is installed 5 cm below the transmission hole. There is a transmission source chamber 9 made of duralumin at the bottom of the lead shielding rod 3, such as figure 2 , the transmission source is placed in the transmission source cavity. The thickness of the lead shielding body is 12cm.

[0019...

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Abstract

The invention belongs to the technical field of measurement of radioactive wastes and discloses a transmission source device. The device comprises a push rod, a lead shielding body and a lead shielding rod and is characterized in that a transmission source is located in a transmission source cavity at the lower part of the lead shielding rod; the bottom of the push rod is fixedly connected with an electromagnet; the lead shielding rod is located rightly below the electromagnet; a push rod motor controls the push rod to move downwards until the push rod is in contact with a stainless steel shell; the electromagnet is electrified to suck the lead shielding rod, and then the push rod motor moves upwards to bring the transmission source to the height of the position of a transmission hole, so that an opening function of the transmission source is realized; after transmission measurement is finished, the push rod motor moves downwards; after the transmission source reaches the position of a closed source shielding block below the transmission hole, the electromagnet is powered off and the lead shielding rod is released; and then the push rod motor is reset upward and a closing function of the transmission source is realized.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste measurement, and in particular relates to a transmission source device. Background technique [0002] Quantitative measurement and analysis of gamma activity is carried out for large-volume nuclear materials or nuclear waste. The internal medium has a relatively large attenuation of gamma rays for radionuclides. The medium information is usually corrected by adding a transmission source measurement, and the selected transmission source is generally a strong gamma radiation source. During the use and operation of the strong gamma source, on the one hand, it is required to minimize the radiation dose of the transmission source to the operator during the normal use of the device; on the other hand, when an accident occurs, as long as the power is cut off quickly, the radiation The source quickly returns to a safe location. [0003] The conventional transmission source device has a transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/02
Inventor 柏磊邵婕文曹端程毅梅刘宏斌刘大鸣何丽霞王仲奇祝利群
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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