Device for horizontal equipment fuel claddings tablets

 

(57) Abstract:

Usage: the invention relates to nuclear engineering and can be used in the gear casings fuel elements (cartridges) of nuclear fuel (tablets). The device contains a vibrooccasion made in the form of the profile of the Cam driven in rotational motion from the drive. The Cam acts on the movable element made in the form of a rod, mounted on it with a shell of a fuel rod. The rod acts through the hinge to the bowl set can be rotated. 6 Il.

The invention relates to nuclear engineering and can be used in the gear casings fuel elements (cartridges) of fuel tablets.

A device for input of radioactive pellets in the tube capacity [1] the Device comprises a docking station with channels for input shell and tablets and the clamping sleeve to ensure the immobility of the login shell.

A disadvantage of this device is the low productivity, the possibility of jamming of the pills in the shell at their introduction, no paliatsos, which also increases the probability of jamming and leads to the necessity of introduction is cast pellets in the fuel rods of the rod type [2] includes a table for placing the pellets in the fuel rods, fixed in the upper part of the table and located coaxially with the tablets, and the vibrating device is connected with the table for the transmission of vibrations, and the vibrating device is connected with the table for the transmission of vibrations in such a way that, when the device vibrates, the table can vary, making the movement forward, up, back and down, forcing them to move every tablet in the fuel rod rod type length, a predetermined time of each cycle.

The device provides high performance equipment fuel rods. A disadvantage of this device is its high energy consumption associated with the presence of a powerful vibrator and a large number of structures. This is due to the need to ensure the rigidity of the table not only in longitudinal but also in the transverse direction.

The closest in technical essence and the achieved technical result is a device for loading nuclear fuel tablets [3] (prototype). The device includes a base, a supporting frame, on which is mounted a plate having multiple grooves, which are fuel pellets. Against the frame has a movable table provided with a vibration to the horizontal. Between the ends of the plate and table installed a transitional device that provides input tablets in the shell. The device is equipped with a movable block levers are equipped with an electric actuator for axial movement. The device is equipped with a system of control over the content.

When enabled, the drive unit moves levers and moves with gutters plate fuel pellets through a transitional device in the shell starts vibrooccasion, the table provides inclined reciprocating movement, tablets are moving in the shell and fill them completely. Slope location table contributes to this.

The specified device has the following disadvantages: a significant number of manual operations, namely: installation shells and posting them on the table, inserting transition bushings in a transitional device, placing the tablets in the grooves on the plate. One of the major drawbacks is the high energy and intensity, complexity and structure.

The invention is directed to a solution to reduce energy and metal consumption, simplifying the design and improving the operational characteristics of the device for equipment fuel rods.

The task releasename it vibrooccasion, the vibratory feeder Cup with pills and a connecting element, the vibrooccasion made in the form of a Cam mechanism, a spring-loaded plunger which has the ability to interact with a bar attached to it by the shell and the rod, in turn, can impact tangentially through the hinge attached to the axis of the bowl with tablets, while the plunger and the rod with the shell have the opportunity to go forward and bowl angular synchronous and in-phase oscillatory movement, and the Cam mechanism is made to the law of movement of the plunger in all phases of motion, satisfying the following mathematical expression:

S 0,5 gKt2,

where S is the displacement of the pusher, m;

g the acceleration of gravity, m/s2;

K > Ktfor phase forward;

K < Ktfor phase reverse;

Ktthe coefficient of friction between the tablet and the shell material;

t the current time phase of the movement of the pusher, C.

In comparison with the known analogues, including the prototype, the use of vibrooccasion in the form of a Cam mechanism, a spring-loaded plunger which cooperates with the rod only in the axial direction, does not require a reinforced aswesome rigidity in the longitudinal direction. During performance of the process equipment of the fuel rods is easily adjustable by varying the speed of rotation of the engine.

The task of the different accelerations of the pusher vibrooccasion (see distinctive features in the claims) in the phases of movement forward and back creates the conditions for the movement of pellets in the shell.

Synchronous and in-phase axial oscillatory movement of the rod and fixed thereto shell provide pills easy sliding tray Cup, docking shell element with the bowl and the inside of the shell. At the same time excluded the impact of the ends of tablets and reduced likelihood of damage to the tablets.

In Fig. 1 shows a device for equipment rods, front view, Fig. 2 a top view; Fig. 3 type a and B of the fastening rod, the roller follower and the Cam; Fig. 4 section B-b shows the bracket attached to the rod, and the location of the rod in the sliding guides of Fig. 5 type G for the connecting element of Fig. 6 type D, a top view of the Cup and the connecting element in place of the output of the tablets from the bowl.

The device contains a vibrooccasion made in the form of a Cam mechanism and consisting of a profile of the Cam 1, mounted on the shaft podlasia 6 and communicates with the above-mentioned Cam 1. On the rod 7 is fixed through a bracket 8 shell 9. One end of a rod rigidly fastened to the pusher and the other end has the opportunity to interact tangentially through the hinge 10 is fixed on the axis of the bowl 11. The rod 7 is installed in the guide 12 with the possibility of lateral movement. The Cup 11 is provided with a guide part 13. On the rod 7 has a connecting element 14, made in the form of connecting lodgement between the part 13 and the adapter 15. as the gear casings tablets is a dusty operation, the bowl 11, the connecting element 14 with the adapter 15 and the open end snaryazhenii shell 9 is placed in a sealed glove box 16. The entire device is mounted on the stationary frame 17.

The device operates as follows.

Sealed on the one hand, the membrane 9 of the transport mechanism 18 is fed to the support arms 8, and then the open end of the shell is inserted in the adapter 15 and secured.

When the shaft of the actuator 3, the profile of the Cam 1, performing a rotational movement acts on the roller 5 of the pusher 4, and the rod 7 mounted on it with a shell 9 is moved in the axial direction, while the chief is Angi 7 with the shell 9 and the bowl 11 to its original position by a spring leaf springs 6. Thus, the rod 7 with the shell 9 performs translational and bowl 11 angular synchronous and in-phase oscillatory motion, forcing tablets 19 lying on the bottom of the bowl 11, to move (slide) on the tray bowl and leaving through the part 13, then through the connecting element 14 and the adapter 15 to the shell 9. Single vibrancy formed by the tray bowl 11, the connecting element 14, the adapter 15 and the shell 9, provides unobstructed smooth sliding of the tablets 18 without collisions and congestion, excluding chips and other damage.

Test devices showed that simplicity, reliability, small metal and energy intensity, adjustable speed electric drive provide improved operational characteristics of the rig rods and performance and allows us to assert that the present invention is useful, necessary.

The sources of information.

1. Device for introducing radioactive pellets in a tubular container. French patent N 2522436, CL G 21 C 21/02, 1983.

2. A device for loading fuel pellets in the fuel elements of the rod type. Application France N 2257130, CL G 21 C 21/02, 1975.

3. The device for loading the pellets of nuclear fuel rods pills, containing a frame placed on it vibrooccasion with a movable element, a vibratory feeder with pills and a connecting element, wherein the vibrooccasion made in the form of a Cam mechanism that is installed with the possibility of interaction with a movable element made in the form of a rod mounted on it with a shell of a fuel rod, and the rod is installed with the possibility of interaction through the hinge with the feeder, made in the form of a bowl that is installed with the possibility of rotation.

 

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