JP6402852B2 - Crushing and recovery equipment - Google Patents

Description

  The present invention relates to a crushing and collecting apparatus.

  In general, high-level radioactive liquid waste that is generated at nuclear facilities is sent to the glass melting furnace of the high-level radioactive liquid waste glass solidification facility, treated as a glass solid, and then stored in the radioactive waste storage facility. Is done.

  In the vitrification facility, high-level radioactive waste liquid is mixed when the raw glass is melted inside the glass melting furnace, and the molten glass mixed with the high-level radioactive waste liquid is poured into a canister (stainless steel container). The glass solidified body is formed by solidifying the molten glass.

  A conventional glass melting furnace includes, for example, a melting furnace body that is constructed of a refractory material such as a refractory brick so that a melting space is formed therein, and whose outer periphery is covered with a metal casing. The upper ceiling wall of the melting furnace body is provided with an inlet into which raw glass such as high-level radioactive liquid waste and glass beads is charged as a liquid to be treated, and is provided at the middle in the vertical direction of the inner wall of the melting furnace body. The main electrode that heats and melts the raw glass in the melting space by energization between each other is arranged oppositely, and the lower end of the bottom portion that has a shape that narrows downward in the melting furnace body has the main electrode A bottom electrode is provided that heats and melts the glass at the bottom of the melting space by energization with the electrode. The flow-down hole formed in the bottom electrode is connected to a flow-down nozzle for extracting molten glass mixed with high-level radioactive waste liquid and injecting it into the canister. The high frequency induction heating coil for nozzles is arranged. Further, an auxiliary electrode is disposed between the main electrode and the bottom electrode on the outer periphery of the portion that is shaped to be narrowed downwardly on the inner wall of the melting furnace body.

  In the conventional glass melting furnace as described above, high-level radioactive liquid waste and raw glass are introduced from the inlet of the melting furnace main body, and first, a current is passed between the main electrodes and between the auxiliary electrodes to cause a joule of the molten glass therebetween. The high-level radioactive liquid waste and the raw glass are sufficiently melted together by heat. Subsequently, the glass on the top of the bottom electrode is heated by Joule heat generated by passing a current between the main electrode and the bottom electrode. After that, when the flow nozzle extending from the flow hole of the bottom electrode is heated by energizing the high frequency induction heating coil for the nozzle, the solidified glass clogged therein is melted and extracted downward, The molten glass in the melting furnace body flows down into a canister set in the lower part thereof and is hermetically accommodated as a glass solidified body.

  For example, Patent Document 1 shows a general technical level related to the glass melting furnace as described above.

JP 2007-302531 A

  By the way, the high-level radioactive liquid waste contains about 1% of platinum group elements such as ruthenium, palladium, rhodium, etc., but the platinum group elements are separated without being dissolved in the glass inside the glass melting furnace. If the particles are small, they move in the same manner as glass, but if the particles are large, they tend to settle and deposit on the bottom of the glass melting furnace compared to the movement of the molten glass inside the glass melting furnace.

  Moreover, since the platinum group element is conductive, when the concentration of the platinum group element in the glass at the bottom of the glass melting furnace is increased by sedimentation, the shape is as if metal is present there. It becomes. As a result, the electrical resistance of the glass is lowered, and even if a current is passed between the main electrode and the bottom electrode and current is passed through the glass, sufficient Joule heat cannot be obtained, and the viscosity of the glass is not lowered. The glass containing the platinum group element may solidify and remain attached to the inner surface of the bottom of the glass melting furnace.

  For this reason, the glass solidified and remained on the inner surface of the bottom of the glass melting furnace is crushed by inserting a dedicated tool for crushing with a tip like a chisel into the glass melting furnace, and instead of the tool. It was necessary to replace the suction device dedicated to the recovery and recover.

  However, if a dedicated tool, a suction device, or the like is replaced each time the glass is crushed and collected, the work efficiency is poor and it takes time and effort.

  Further, in order to suck the glass piece after crushing with a suction device or the like, a tool for crushing the glass piece more finely is required, which has been a factor of further reducing the work efficiency.

  Furthermore, when the glass piece is collected by suction, the apparatus may be blocked by the glass piece, and it is necessary to take some measures for releasing the blockage of the apparatus.

  The present invention has been made in view of the above-described conventional problems, and can collect and recover the object attached to the inner surface of the structure without changing tools and devices, thereby improving work efficiency. An object of the present invention is to provide a crushing and collecting device that can be obtained and can cope with a blockage caused by an object to be collected.

The present invention is inserted disposed externally of the glass melting furnace to the inside, a crushing recovery apparatus for recovering by crushing glass adhered to the inner surface of the glass melting furnace,
A suspension tool unit that suspends glass from the inner surface of the glass melting furnace and further presses and crushes the suspended glass ;
A suction unit disposed adjacent to the lifting tool unit and sucking the glass crushed by the lifting tool unit;
An occlusion release unit that is inserted into the suction unit and is remotely operated and for releasing clogging in the suction unit due to the glass ;
A base flange attached to the opening of the glass melting furnace;
A guide pipe penetratingly arranged with respect to the base flange via a spherical bearing;
A main pipe that is slidably arranged in the axial direction with respect to the guide pipe;
The hanging tool unit is detachably attached to the tip of the main pipe,
The suction unit is related to a crushing and collecting apparatus characterized in that the suction unit passes through the inside of the main pipe and is juxtaposed with the suspension tool unit .

  In the crushing and collecting apparatus, a plurality of the clogging release units are arranged at intervals in the longitudinal direction of a wire inserted into the suction unit, a gripping part fitted to the upper end of the wire, and the wire. It is preferable to provide a pipe member fitted so as to be installed.

According to the crushing and collecting apparatus of the present invention, the object to be collected attached to the inner surface of the glass melting furnace as a structure can be crushed and collected without changing tools and apparatuses, and work efficiency can be improved. In addition, it is possible to achieve an excellent effect of being able to cope with a blockage caused by an object to be collected.

It is a perspective view which shows the Example of the crushing collection | recovery apparatus of this invention. It is a whole schematic diagram which shows the state which inserted the Example of the crushing collection | recovery apparatus of this invention into the inside of a glass melting furnace. FIG. 3 is a detailed view of part III in FIG. 2. FIG. 4 is a detailed view of a part IV in FIG. 2. FIG. 3 is a detailed view of a portion V in FIG. 2. It is a figure which shows the action | operation of the obstruction | occlusion release unit in the Example of the crushing collection | recovery apparatus of this invention, Comprising: It is VI-VI arrow line view of FIG. 4, (a) is the state figure which located the obstruction | occlusion release unit in the descent | fall end. , (B) is a state diagram in which the closure release unit is located at the rising end.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 to 6 show an embodiment of the crushing and collecting apparatus of the present invention. The crushing and collecting apparatus is inserted and arranged from the outside to the inside of a glass melting furnace 1 (see FIG. 2) as a structure, The glass G as an object to be collected attached to the inner surface of the furnace 1 is crushed and collected.

  The crushing and collecting apparatus is arranged so that the glass G is suspended from the inner surface of the glass melting furnace 1, the suspended glass G is further pressed to crush the suspended glass G, and the suspended tool unit 2 is adjacent to the suspended tool unit 2. The suction unit 3 sucks the glass G crushed by the lifting tool unit 2, and is inserted into the suction unit 3 so as to be remotely operated and to release the clogging of the glass G inside the suction unit 3. The closure release unit 4 is provided.

  As shown in FIGS. 2 and 5, a base flange 5 is attached to the opening 1 a of the glass melting furnace 1, and a guide pipe 7 penetrates the base flange 5 via a spherical bearing 6 in a tiltable manner. The main pipe 8 is pierced through the guide pipe 7 so as to be slidable in the axial direction.

  As shown in FIG. 3, the lifting tool unit 2 is detachably attached to the tip of the main pipe 8, and the suction unit 3 has a suction pipe 3 a that penetrates the inside of the main pipe 8 and the lifting tool unit 2. A suction nozzle 3b is attached to the tip of the suction pipe 3a in parallel with the unit 2.

  As shown in FIGS. 1 and 4, a grip unit 9 is provided at the upper end of the main pipe 8. The gripping unit 9 includes a frame body 9A attached to the upper end of the main pipe 8, a support plate 9C placed on the upper base plate 9a of the frame body 9A via a vibration isolator 9B, and the support plate 9C. And a gripping pipe 9D standing on the top. Further, a support post 9E is erected at both width ends of the lower base plate 9b of the frame body 9A, and a hook of a hoist 10 attached to the tip of a robot arm (not shown) is provided between the upper ends of the support post 9E. The suspension member 9 </ b> F to which 10 a is hooked is pivotally attached. The vibration isolator 9B is an instrument that absorbs shock and vibration in three dimensions using elastic deformation of the wire rope.

  As shown in FIG. 3, the lifting tool unit 2 includes a tool body 2a that vibrates the tip tool 2b by air pressure, and a connector plug 2c (see FIG. 4) that supplies compressed air to the tool body 2a is provided in the main pipe. 8 is disposed inside the frame 9A of the gripping unit 9 so as to be connected to the upper end of the gripping unit 9. Note that compressed air introduced into the connector plug 2c from an unillustrated compressor via an air hose flows through the main pipe 8 and is supplied from the air pipe 2d (see FIG. 3) to the tool body 2a. It is like that. As the tip tool 2b, for example, a hammer made of a special hard alloy for surface finishing of a stone material (referred to as “Bishan”) can be used. In this connection, the striking surface of the tip of the bishan used as the tip tool 2b is planar, unlike a chisel with a sharp tip, and a plurality of quadrangular pyramid teeth 2e are projected.

  As shown in FIG. 4, the upper end of the suction pipe 3a passes through the lower base plate 9b of the frame 9A, and a pipe joint 3d is connected to the upper end of the suction pipe 3a passing through the lower base plate 9b via an elbow 3c. A cyclone suction recovery device 11 (see FIG. 2) is connected to the other end of the suction hose 3e (see FIG. 1) which is attached and connected at one end to the pipe joint 3d.

  The clogging release unit 4 includes a wire 4A inserted into the suction pipe 3a of the suction unit 3, and a gripping portion in which a flange portion 4b is formed at the upper and lower ends of the cylindrical body 4a and fitted to the upper end of the wire 4A. 4B, and a tube material 4C that is fitted to the wire 4A so as to be arranged in a plurality of intervals in the longitudinal direction. The blocking release unit 4 is inserted from the upper end of the gripping pipe 9D, and is inserted into the suction pipe 3a from a receiving tube 3f attached to the elbow 3c. Then, the gripping portion 4B is gripped by a manipulator (not shown), and as shown in FIGS. 6 (a) and 6 (b), the closure release unit 4 is moved up and down, whereby the suction unit 3 made of the glass G is moved. It is designed to release internal clogging. Between the gripping portion 4B of the wire 4A and the tube material 4C positioned at the uppermost portion, there is a lowering stopper 4D that abuts the receiving tube 3f to restrict the lowering of the wire 4A, and the gripping pipe 9D. And a slide guide 4E for guiding the raising and lowering of the wire 4A.

  Next, the operation of the above embodiment will be described.

  When crushing the glass G that has solidified and remained on the bottom inner surface of the glass melting furnace 1 as a structure, first, the hook 10a of the hoist 10 attached to the tip of the robot arm (not shown) is suspended from the suspension member 9F. The suspension tool unit 2 and the suction unit 3 are inserted and disposed inside the opening 1a of the glass melting furnace 1 so as to cover the opening 1a as shown in FIG. A base flange 5 is attached to the glass melting furnace 1.

  In this state, when the driving of the robot arm and the hoisting / lowering operation of the hook 10a by the hoist 10 are combined, the guide pipe 7 and the main pipe 8 tilt with respect to the spherical bearing 6 and the main pipe 8 is guided to the guide pipe 7 The tip tool 2b of the lifting tool unit 2 can be moved in accordance with the position of the remaining glass G solidified on the inner surface of the bottom of the glass melting furnace 1.

  In the tool main body 2a of the lifting tool unit 2, compressed air introduced into the connector plug 2c from a compressor (not shown) via an air hose flows through the main pipe 8 to the air pipe 2d (see FIG. 3). When the tip tool 2b vibrates, the glass G is crushed. Note that when the glass G is crushed while the gripping pipe 9D is gripped by a manipulator (not shown), vibrations generated at that time are absorbed by the vibration isolator 9B and are prevented from being transmitted to the manipulator.

  The glass G crushed by the lifting tool unit 2 is sucked into the suction pipe 3a from the suction nozzle 3b of the suction unit 3, and is recovered by the cyclone suction recovery device 11 (see FIG. 2) via the suction hose 3e. .

  As a result, it is not necessary to replace dedicated tools, suction devices, etc. each time the glass G is crushed and recovered, the work efficiency is improved, and labor and time are reduced.

  Here, large fragments of the crushed glass G are not sucked from the suction nozzle 3b. However, the tip tool 2b is not a chisel-shaped tool with a sharp tip, but has a flat striking surface and a plurality of quadrangular pyramid teeth 2e projecting from the glass melting furnace 1 By pressing the large pieces of the glass G using the weight of the entire apparatus at the flat part on the inner surface of the bottom of the glass, the large pieces of the glass G can be crushed more finely without being released and sucked from the suction nozzle 3b. This eliminates the need for a separate tool for crushing glass G fragments more finely, and can eliminate factors that further reduce the work efficiency.

  Further, when the glass G fragments are collected by the suction unit 3, the suction pipe 3a may be blocked by the glass G fragments, but the gripping portion 4B is gripped by a manipulator (not shown), and FIG. As shown in FIG. 6B, when the closure release unit 4 is moved up and down, the plurality of tubes 4C fitted to the wires 4A are moved in the suction pipe 3a and are clogged in the suction pipe 3a. The glass G will circulate downstream along with the sucked air.

Thus, it is possible to crush and collect the glass G adhering to the inner surface of the glass melting furnace 1 as a structure without changing tools or devices, and to improve the work efficiency and to cope with the blockage by the glass G. Can do.

  And, as in this embodiment, a base flange 5 attached to the opening 1a of the glass melting furnace 1 as the structure, and a guide penetratingly disposed through the base flange 5 via a spherical bearing 6 so as to be tiltable. A pipe 7 and a main pipe 8 which is slidably disposed in the guide pipe 7 in the axial direction thereof. The suspension tool unit 2 is detachably attached to a tip of the main pipe 8 and the suction pipe It is preferable in the following points that the unit 3 penetrates the inside of the main pipe 8 and is arranged in parallel with the lifting tool unit 2. That is, while the guide pipe 7 and the main pipe 8 are tilted with the spherical bearing 6 as a base point, the main pipe 8 is slid in the axial direction with respect to the guide pipe 7, so that the tip tool 2 b of the lifting tool unit 2 is moved. The position adjustment can be freely performed according to the position of the glass G remaining after solidifying on the inner surface of the bottom of the glass melting furnace 1. Further, since the hanging tool unit 2 is detachably attached to the tip of the main pipe 8, the hanging tool unit 2 can be easily replaced as necessary. Furthermore, since the suction unit 3 penetrates the inside of the main pipe 8 and is arranged side by side with the suspension tool unit 2, the glass G crushed by the suspension tool unit 2 can be immediately sucked.

  Further, as in the present embodiment, the blocking release unit 4 includes a wire 4A inserted into the suction unit 3, a gripping portion 4B fitted to the upper end of the wire 4A, and the wire 4A. It is preferable in terms of the following points to include the pipe member 4C that is fitted so as to be disposed in a plurality in the longitudinal direction. That is, when the gripping portion 4B is gripped by a manipulator (not shown) and the closure release unit 4 is moved up and down as shown in FIGS. 6 (a) and 6 (b), a plurality of pieces fitted to the wire 4A are attached. The tube material 4C moves in the suction pipe 3a, and the clogging of the glass G inside the suction unit 3 can be released.

  It should be noted that the crushing and collecting apparatus of the present invention is not limited to the above-described embodiments, and it is needless to say that various changes can be made without departing from the scope of the present invention.

1 Glass melting furnace (structure)
DESCRIPTION OF SYMBOLS 1a Opening part 2 Lifting tool unit 3 Suction unit 4 Closure release unit 4A Wire 4B Gripping part 4C Tubing material 4a Cylindrical body 4b Flange part 5 Base flange 6 Spherical bearing 7 Guide pipe 8 Main pipe G Glass (to be collected)

Claims (2)

Is inserted and arranged externally of the glass melting furnace to the inside, a crushing recovery apparatus for recovering by crushing glass adhered to the inner surface of the glass melting furnace,
A suspension tool unit that suspends glass from the inner surface of the glass melting furnace and further presses and crushes the suspended glass ;
A suction unit disposed adjacent to the lifting tool unit and sucking the glass crushed by the lifting tool unit;
An occlusion release unit that is inserted into the suction unit and is remotely operated and for releasing clogging in the suction unit due to the glass ;
A base flange attached to the opening of the glass melting furnace;
A guide pipe penetratingly arranged with respect to the base flange via a spherical bearing;
A main pipe that is slidably arranged in the axial direction with respect to the guide pipe;
The hanging tool unit is detachably attached to the tip of the main pipe,
The crushing and collecting apparatus , wherein the suction unit passes through the main pipe and is juxtaposed with the suspension tool unit . The occlusion releasing unit is fitted so that a plurality of wires are inserted into the suction unit, a gripping part is fitted to the upper end of the wire, and a plurality of the wires are spaced apart in the longitudinal direction. crushing recovery system of claim 1 wherein a tubing that is.

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