A neutron channel gate device
A channel and neutron technology, applied in the field of neutron channel gate devices, can solve the problems of inconvenient opening and closing of neutron channels, inability to completely and effectively shield neutrons, inconvenient use and maintenance, and achieve easy opening and closing, structural Simple, connected and reliable results
Inactive Publication Date: 2016-07-06
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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Problems solved by technology
This method is inconvenient to open and close the neutron channel, inconvenient to use and maintain, and cannot completely and effectively shield neutrons
Method used
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[0013] Below in conjunction with accompanying drawing, the present invention will be further described
[0014] figure 1 is the front view of the neutron channel gate structure of the present invention, figure 2 is a cross-sectional view of the neutron channel gate structure of the present invention, image 3 It is a sectional view of the neutron channel gate structure of the present invention. exist Figure 1 ~ Figure 3 Among them, the neutron tunnel gate device of the present invention includes a lower guide shaft 1, an installation base 2, a shaft sleeve 3, a lower limit bolt 4, a neutron channel 5, a shielding layer 6, an upper limit bolt 7, an upper guide shaft 8, an upper Fixed frame 9, upper limit switch 10, upper limit block 11, lower limit block 12, lower limit switch 13, cylinder 14, expansion screw 15, its connection relationship is that described guide shaft 1 is connected with neutron channel 5 by screws, The shielding layer 6 is placed on the top of the neut...
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The invention provides a neutron channel gate device which is composed of components such as a guiding shaft, a mounting base, a spindle sleeve, stop bolts, a neutron channel, a shielding layer, an upper fixed framework, limit switches, stoppers, a cylinder and the like. The guiding shaft, the neutron channel and the shielding layer form a fixed assembly which moves up and down along the fixed framework under the action of the cylinder. An upper stopper is fixed at the upper end of the shielding layer. When the shielding layer moves upwards to a specific location, the upper stopper is contacted with an upper limit switch and an upper signal is outputted. A lower stopper is fixed at the lower end of the neutron channel. When the neutron channel moves downward to a specific location, the lower stopper is contacted with a lower limit switch and a lower signal is outputted. The device has advantages of simple structure, reliable connection and convenient use and maintenance, and is easy to realize opening and closing of the neutron channel.
Description
technical field [0001] The invention belongs to the technical field of reactor shielding devices, and in particular relates to a neutron channel gate device. Background technique [0002] The neutron channel gate device is mainly a supplement to the shielding capability of the reactor. After using the additional gate, the radiation dose generated from the reactor can meet the safety dose requirements. [0003] At present, the neutron channel is generally carried out by means of a block, and the neutron channel is opened when the block is taken out of the neutron channel; and the neutron channel is closed when the block is put into the neutron channel. This method is inconvenient to open and close the neutron channel, inconvenient to use and maintain, and cannot completely and effectively shield neutrons. Contents of the invention [0004] In order to overcome the deficiency of opening and closing the neutron channel in the prior art, the present invention provides a gate ...
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IPC IPC(8): G21C11/02
CPCY02E30/30
Inventor 杜卫星李军格刘志勇刘耀光魏建明周自平陈波李建罗正华邓云伟陈喜平
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF