JPS607785Y2 - uranium centrifuge - Google Patents

Description

[Detailed explanation of the idea] This invention concerns a uranium centrifugal separation device.

Conventionally, in a uranium centrifugal separation system, a large number of centrifuges (more than 10 centrifuges) are connected in series, UF6 gas is supplied into these centrifuges, and the uranium component in the UF6 gas is separated into U238. And U235J, which is lighter than this
Divide into U and concentrate this U235 precept.

For this separation and concentration, the rotary drum of the centrifuge is rotated at a circumferential speed of 400 m/s or more.

However, this rotary cylinder may become unbalanced for some reason during rotation, come into contact with surrounding casings, etc., and be destroyed.

In such a case, thin fragments and strong pressure waves are generated, which rush into the front and rear centrifuges, destroy their rotating barrels, and generate fragments and pressure waves again.

In this way, the destruction propagates sequentially to the previous and subsequent stages, and all centrifuges are destroyed.

This idea was made in view of the above situation, and its purpose is to prevent the damage from spreading to all centrifuges in the event that one centrifuge breaks down as described above. It is an object of the present invention to provide a uranium centrifugal separator that is capable of centrifuging uranium and has a simple structure.

The structure of this invention will be described with reference to the drawings showing one embodiment. In FIGS. 1 to 9, the main body 1° 1', 1"
Formed by two openings 2, 2 that serve both as gas inflow and gas exhaustion,
A buffer dust collector 5.5' is provided with swirling devices 3゜3', 3'' for inflowing gas and a dust collection chamber 4 for storing dust in the inflow gas.
, 5'', and a block 7 of a centrifuge 6 is connected to the two openings 2°2 of the buffer dust collectors 5.5' and 5'', respectively. be.

In the figure, 9 is a slit, 10 is a separation chamber, 11 is a core, 1
2 is a tube wall, and 13 is a pipe.

To explain this in detail, first, in FIG. 1, the rotating device 3 is provided with guide vanes 14 spirally around the core 11, and in the uranium centrifugal separator shown in FIGS. 7 to 9, If one of the centrifuges 6 breaks down as described above, a pressure wave and a gas flow will rush in from either of the openings 2,2.

These pressure waves and gas flows sequentially impinge on the spiral blade surface 14, are diffused, swirled, and weakened.

Further, the dust generated by the destruction is subjected to centrifugal force by the swirling flow of the gas and approaches the separation chamber 10, while being thrown into the dust collection chamber 4 through the slit 9 due to collision with the guide vanes 14, etc.

In this way, pressure waves are attenuated and dust is also collected.

Note that the number of guide vanes 14 is arbitrary.

Next, the buffer dust collector 5' shown in FIGS. 3 and 4 is formed by a propeller-shaped stationary blade 17 as a gas swirling device 3', and is different from the buffer dust collector 5' shown in FIG. 5
It has almost the same functions as .

The stationary blades 17 may be provided throughout the main body 1', or may be omitted from the central portion as shown in the figure.

The buffer dust collector 5'' shown in FIGS. 5 and 6 is a gas swirling device 3'' in which two openings 2.2 are formed in a main body 1'' in a cylindrical shape and in a tangential direction. be.

As for the pressure wave and gas flow that rush in from either opening 2, first the pressure wave is caused by the pipe wall 12, the separation wall 10,
etc., and are scattered and buffered and dissipated from other openings 2.

Further, since the gas flow is introduced into the main body 1'' from the tangential direction, a swirling flow is formed.

At the same time, the dust and the like that have entered fall into the dust collection chamber 4 through the slit 9 of the separation wall 10.

Both of the buffer dust collectors 5.5' and 5'' are
The function is the same even if the openings through which pressure waves, etc. enter are swapped between the left and right sides.

Next, the buffer dust collector 5.5', 5'' centrifugal separator 6
There are various types of connection to the block 7 shown in FIGS. 7 to 9.

The configuration shown in FIG. 7 is a cascade type separation device, in which the supplied UF'6 gas enters as shown by arrow A, and the concentrated gas of U235J& proceeds as shown by arrow B.

Also, gas with a low concentration of U235J& is allowed to advance as shown by the arrow.

In this state, if one of the blocks of the centrifugal separator 6 becomes unbalanced in its rotating body for some reason and is destroyed as described above, the centrifugal separator 6 in the block 7 will be destroyed. , and other blocks 7 are prevented from being destroyed by the action of the buffer dust collectors 5.5', 5''.

The same applies to the configuration shown in FIG. 8, and the configuration shown in FIG. 9 can only destroy the centrifugal separator 6 that caused the destruction.

In addition, the buffer dust collectors 5.5', 5'' act reversibly no matter which side of the openings 2, 2 a pressure wave etc. enter, so the overall packing can be simplified. Therefore, pressure loss during normal use can also be reduced.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of this invention, a partially destroyed perspective view of a buffer dust collector used in a uranium centrifugal separator, and Figure 2 shows the separation of the buffer dust collector used in a uranium centrifuge. A partial perspective view of the chamber, FIG. 3 shows a second embodiment of this invention, a side sectional view of the buffer dust collector, FIG. 4 is a front view of the device shown in FIG. 3, and FIG. 5 shows a second embodiment of this invention. 6 is a front sectional view of the device shown in FIG. 5, and FIGS. 7, 8, and 9 are respectively a uranium centrifugal separator. It is a schematic diagram showing various forms of. 1.1', 1"... Body, 2, 2...
Opening, 3゜3', 3''...Swivel device, 4...
... Dust collection chamber, 5゜5', 5'' ... Buffer dust collector, 6 ... Centrifugal separator, 7 ... Block.

Claims (1)

[Scope of utility model registration request] The main body 1.1', 1'' has two openings 2, 2 for gas inflow and outflow, and an inflow gas swirling device 3.3.
', 3'' and a dust collection chamber 4 for storing dust in the inflow gas are provided to form a buffer dust collector 5.5', 5'', and the buffer dust collector 5.5', 5'' is A uranium centrifugal separator characterized in that blocks 7 of a centrifuge 6 are connected to the two openings 2, 2, respectively.