JP2001350000A - Target truck for neutron scattering facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a target truck for neutron facility suited for performing maintenance and replacement of parts by remote control. SOLUTION: The target truck includes a target part 6 irradiated with charged particles inside a target port 30 to generate neutrons, a seal part 25 provided at the target part 6 to seal and fix the target part 6 to the target port 30, a shield part 7 for providing shielding against neutrons generated within the target port 30, a first fixing part 21 for fixing the shield part 7 to the target part 6; a truck 3 carrying the target part 6, the seal part 25, the shield part 7 and the first fixing part 21, and a drive part 58 for driving the truck 3. To install the target part 6 within the target port 30, the truck 3 is transferred to the target port 30 by the drive part 58 and the target part 6 is sealed and fixed to the target port 30 by the seal part 25 and the shield part 7 is fixed to the target part 6 by the first fixing part 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a neutron facility target cart used in a neutron facility for generating neutrons by irradiating charged particles such as a proton beam, and more particularly, to maintenance by remote control. And a target cart for neutron facilities suitable for replacing parts.

[0002]

2. Description of the Related Art A proton beam from an accelerator is incident on a heavy metal target to cause a spallation reaction to generate a high-intensity neutron beam, which is advanced in a wide range of fields such as life science, condensed matter physics, and nuclear physics. The neutron facility where the research is conducted
Conventionally, a target cart 1 for a neutron facility as shown in FIG. 15 has been used.

[0003] The target cart 1 for neutron facilities is arranged on a cart 3 provided with wheels 2, and FIG. 16 (a)
16B, during the neutron scattering operation, the target unit 6 is inserted into the radiation source chamber 10 by moving the wheel 2 on the rail 5.

On the other hand, at the time of maintenance / repair, by moving the carriage 3 on the rail 5, it is possible to pull out and convey the radiation from the source room 10 to the target carriage handling room 12 and the target carriage maintenance room 14 side. It is arranged as follows.

In the target cart 1 for a neutron facility, the target section 6 is mounted on a target section block 8 which is the tip of a shielding block 7 on the cart 3.
Pipes (cooling units and cooling pipes) 16 for cooling the cooling block 7 are connected to the plumbing cavity 9 at the end of the shielding block 7.

In the case of a high-intensity neutron beam, during maintenance such as replacement or repair of parts of the target section 6 and the cooling pipes 16 in the plumbing cavity 9, the shielding block 7 and the target section, which are heavy and long, from the viewpoint of reducing exposure. 6. It is necessary to attach / detach / handle the cooling pipes 16 and the like by remote control.

[0007]

However, such a conventional trolley for neutron facilities has the following problems.

That is, the shielding block 7, the target portion 6, and the cooling pipes 16 are asymmetric structures having different structures depending on their installation locations, and when being lifted, the gripping position is adjusted or the center of gravity is adjusted on the handling tool side. It is not suitable for remote operation because it is necessary to center and lift. Even if remote control is performed, it takes a long time because it is difficult to attach and detach these components and to handle them.

Therefore, during maintenance of the target cart 1 for neutron facilities such as parts replacement and repair, an operator performs centering / lifting work while visually confirming with a chain block or the like using an M / S manipulator (not shown). Therefore, there is a problem that workers are exposed.

In addition, when the radiation level is high, work cannot be started until the radiation dose rate in the facility is sufficiently attenuated, which causes a problem that the facility utilization rate is reduced.

The present invention has been made in view of such circumstances, and is constructed by combining components that can be easily attached and detached, and is thus suitable for maintenance and replacement of components by remote control. To provide a target trolley for neutron facilities.

[0012]

Means for Solving the Problems In order to achieve the above object, the present invention takes the following measures.

That is, according to the first aspect of the present invention, a target portion which receives radiated charged particles in the target port to generate neutrons, and a seal provided in the target portion for sealing and fixing the target portion to the target port side. Part, a shielding part for shielding neutrons generated in the target port, and a first part for fixing the shielding part to the target part side.
And a truck mounted with a target portion, a seal portion, a shielding portion, and a first fixed portion, and a driving portion for driving the truck. When the target portion is installed in the target port, the driving portion The trolley is transferred to the target port side, the target portion is sealed and fixed to the target port side by the seal portion, and the shielding portion is fixed to the target portion side by the first fixing portion.

According to the second aspect of the present invention, there is provided a target portion which receives radiated charged particles in the target port to generate neutrons, and a seal portion provided in the target portion for sealing and fixing the target portion to the target port side. ,
A shielding part for shielding neutrons generated in the target port, a gas cylinder provided in the shielding part, and the shielding part is temporarily fixed to the target part side by being pressed by the gas cylinder, and the pressing by the gas cylinder is released. A fixing pin for fixing the shielding portion to the target portion side, a bogie equipped with the target portion, the seal portion, the shielding portion, and the fixing pin, and a driving portion for driving the bogie, and setting the target portion in the target port In the case of, by the drive unit, the carriage that the mounted shielding unit is temporarily fixed to the target unit side is transferred to the target port side, and the target unit is sealed and fixed to the target port side by the seal unit, Release the pressing of the shielding part by the gas cylinder, and move the shielding part to the target part side with the fixing pin. A constant.

According to a third aspect of the present invention, in the target cart for a neutron facility of the first or second aspect of the present invention, a positioning hole provided so that the target portion is installed at a predetermined location in the target port; A second fixing portion for fixing the carriage based on the positioning hole.

According to a fourth aspect of the present invention, in the target cart for a neutron facility according to the third aspect of the present invention, the first supply pipe is a pipe for supplying a liquid metal that generates neutrons when irradiated with charged particles to the target portion. A first recovery pipe which is a pipe for recovering the liquid metal irradiated by the charged particles in the target portion, a first supply pipe, and a first supply pipe.
And the recovery pipes respectively, at least the thermal expansion amount of both pipes, or the case where the truck is not fixed based on the second fixing portion and the case where the truck is fixed based on the second fixing portion. And a first expansion joint that expands and contracts in accordance with the difference in the position of the pipe based on the difference in the position of the truck.

According to a fifth aspect of the present invention, in the target cart for a neutron facility according to the third or fourth aspect, a second supply pipe is a pipe for supplying cooling water for cooling the target section to the target section; A second return pipe, which is a return pipe of the cooling water supplied to the target portion by the second supply pipe.
Recovery pipe, the second supply pipe and the second recovery pipe, respectively, at least the amount of thermal expansion of both pipes, or the case where the bogie is not fixed based on the second fixing part, A second expansion joint that expands and contracts in accordance with the difference in the position of the pipe based on the difference in the position of the bogie from the case where the carriage is fixed based on the second fixing portion.

According to a sixth aspect of the present invention, in the target cart for a neutron facility according to the fourth aspect of the present invention, the second pipe is a pipe for supplying cooling water for cooling the target section to the target section.
A supply pipe, a second recovery pipe that is a return pipe of the cooling water supplied to the target portion by the second supply pipe,
The second supply pipe and the second recovery pipe are provided respectively, and at least the amount of thermal expansion of both pipes, or the case where the truck is not fixed based on the second fixing portion, and the case where the truck is fixed to the second fixing portion. A second expansion joint that expands and contracts in accordance with the difference in the position of the pipe based on the difference in the position of the bogie from the case where the carriage is fixed based on the first expansion joint provided in the first supply pipe; A first joint fixing means for simultaneously and integrally fixing a second expansion joint provided on the second supply pipe so as to be detachably attached thereto; a first expansion joint provided on the first recovery pipe;
And a second joint fixing means for integrally fixing the second expansion joint provided in the collection pipe so as to be simultaneously detachably attachable.

According to a seventh aspect of the present invention, in the target cart for a neutron facility according to any one of the fourth to sixth aspects, at least one of the supply pipe and the recovery pipe is inspected, maintained, and repaired. Remote control means for performing any one of the above by remote control.

According to an eighth aspect of the present invention, in the target cart for a neutron facility according to the seventh aspect of the present invention, the shielding portion includes a first gripping portion capable of gripping the shielding portion on an upper side, and the remote control means includes: While grasping the first gripper and lifting and transferring the shielding part, the replacement shielding part is gripped by the first gripper and lifted and transferred onto the trolley, and the replacement shielding part is placed on the trolley. The shield is replaced by loading.

According to a ninth aspect of the present invention, in the target cart for a neutron facility according to any one of the fourth to eighth aspects of the present invention, the supply pipe and the recovery pipe are respectively disposed in the shielding section, and are disposed in the shielding section. An opening window that enables maintenance of each installed pipe is provided in the shielding unit.

According to a tenth aspect of the present invention, in the target cart for a neutron facility according to the ninth aspect, the trolley is provided between the supply pipe and the expansion joint provided in the supply pipe. A first coupler for connecting the supply pipe and the expansion joint, and a recovery pipe provided in the opening window and interposed between the collection pipe and the expansion joint provided in the collection pipe; And a second coupler for connecting the two.

According to the eleventh aspect of the present invention, in the target cart for a neutron facility according to the tenth aspect, the coupler comprises:
An upstream end member connected to the upstream side of the pipe, a downstream end member connected to the downstream side of the pipe, and an outer peripheral portion of a joint between the upstream end member and the downstream end member were provided to cover the outer periphery. A sleeve, first connection means for connecting the upstream end member and the sleeve, and second connection means for connecting the downstream end member and the sleeve are provided.

According to a twelfth aspect of the present invention, in the neutron facility target cart of the eleventh aspect, the first connecting means includes a hole provided on the upstream end member side and a hole provided on the sleeve side. The first lock pin connects the upstream end member and the sleeve by being integrally inserted, and the second connection means is provided on the hole provided on the downstream end member and on the sleeve side. The second lock pin connects the downstream end member and the sleeve by being integrally inserted into the hole.

According to the thirteenth aspect of the present invention, in the tenth to the first aspects,
2. The target cart for a neutron facility according to any one of the items 2), further comprising a drain means for draining a residue remaining inside the coupler from the coupler.

According to the fourteenth aspect, the first to thirteenth aspects are described.
In the trolley for neutron facilities according to any one of the inventions, the removing means for removing the target part and the seal part from the trolley, and the target part and the seal part removed by the removing means are lifted and transferred as waste. Waste transfer means.

According to the fifteenth aspect of the present invention, the fourth to thirteenth aspects are provided.
In the trolley for neutron facilities of any one of the inventions of the present invention, the supply pipe and the recovery pipe are provided respectively, a second gripper capable of gripping the pipe, and the second gripper, A pipe lifting means for lifting the pipe provided with the second grip portion.

According to a sixteenth aspect of the present invention, in the neutron facility target cart of the fifteenth aspect, the pipe lifting means grips the second gripping part and is provided with the second gripping part. Is lifted and transferred, while the replacement pipe is lifted by gripping the second gripping portion of the pipe and transferred to the bogie side to replace the pipe.

According to the seventeenth aspect, the first to sixteenth aspects are provided.
In the target truck for neutron facility of any one of the inventions of the present invention, by running the truck, by providing a rail for guiding the truck into the target port, by providing a drive unit separately from the truck at the lower side of the rail Enables the cart to be shorter.

According to the eighteenth aspect of the present invention, the first to sixteenth aspects are provided.
The trolley for neutron facilities according to any one of the inventions, wherein the trolley is provided with a rail for guiding the trolley into the target port by running the trolley, and a drive unit is buried under the rail, and the buried drive unit is provided. In the case where maintenance is performed on the drive unit, the cover unit that covers the drive unit is removed to perform maintenance on the drive unit.

[0031]

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

The same reference numerals in the drawings used in the following description of the embodiments denote the same parts as in FIGS. 15 and 16, and a description thereof will be omitted.

(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows an example of a target cart for a neutron facility according to the present embodiment, and is a partial side sectional view in a front part.

FIG. 2 is a plan view of the trolley for neutron facilities shown in FIG.

FIG. 3 is a front view of the neutron facility target cart shown in FIG. 1 as viewed from the target section side.

FIG. 4 is a partial side sectional view of the neutron facility target cart shown in FIG. 1 when the upper shield is removed.

FIG. 5 is a plan sectional view of the neutron facility target cart shown in FIG.

FIG. 6 is a sectional view of the neutron facility target cart shown in FIG.

FIG. 7 is a sectional view of the neutron facility target cart shown in FIG.

FIG. 8 shows an example of the neutron facility target cart according to the present embodiment, and is a partial side sectional view of a rear portion.

FIG. 9 is a sectional view of the driving device.

That is, the target cart for the neutron facility according to the present embodiment has an oval cross-sectional shape, and is subjected to the proton beam irradiation in the source chamber 10.
The first shielding blocks 7 (1a) and 7 (1b) and the second
Shielding block 7 (2) and third shielding block 7 (3)
And additional components.

(1) Target Unit 6 The target unit 6 is integrally attached to a plurality of lock pins 21 and the distal end surface of a cylindrical body member 23 having both a radiation shielding function and a reinforcing function of the target unit 6. I have to.

The distal end surface of the cylindrical body member 23 is integrally attached to a disk-shaped flange member 27 provided with a radiation-resistant hollow metal seal ring 25 provided so as to be able to hermetically seal He gas. . The disc-shaped flange member 27 has both a radiation shielding function and a reinforcing function of the cylindrical trunk member 23.

Thus, the target section 6 is connected to the neutron scattering container 29 and the target port 3 in the radiation source chamber 10.
0, so that it is positioned with respect to the tip flange 31.

The lock pin 21 fixes the pressing rod 33 so that it can be unlocked and released. Thus, the fixed pressing rod 33 presses the gas cylinder 35 housed in the second shielding block 7 (2). The second shielding block 7 (2) has an offset structure having a horseshoe-shaped cross-sectional shape. As will be described later, the lower part of the second shielding block lower member 7 (2) having an offset structure having a rectangular cross-sectional lower portion will be described later. And a second shielding block upper member 7 having an offset structure in which the upper part has a semicircular cross-sectional shape.
(2).

A liquid metal inlet pipe 37 for supplying liquid metal to the target section 6 and a liquid metal outlet pipe 38 for returning the liquid metal are provided in the hollow interior of the cylindrical body member 23 having an oval cross section. Provided. In addition, the target unit 6
A cooling water inlet pipe 39 which is a pipe for supplying cooling water to the
A cooling water outlet pipe 40 as a return pipe is provided.

The first shielding block 7 (1 a) includes a one-touch coupler 42 having a lock mechanism for attaching and detaching the liquid metal inlet pipe 37, the liquid metal outlet pipe 38, the cooling water inlet pipe 39, and the cooling water outlet pipe 40. An opening window W for maintenance / repair for maintenance / repair is provided.

The disc-like flange member 27 and the cylindrical body member 23 have a spring 44 on the lock pin 21. Thereby, the inside of the distal end of the target port 30 and the distal end flange 31 surface side are engaged so as to be able to be pressed and adhered.

Further, the disc-shaped flange member 27 and the cylindrical body member 23 are provided with stopper pins 46 for preventing falling off. As a result, the target port 30 is detachably engaged with the inside of the distal end of the target port 30 and the flange 31 surface side.

The first shielding block 7 (1 a) is set on the top surface of the bogie 3 in the direction of a plurality of positioning pins 48 so as to be installed in a contracted manner.

The first shielding block 7 (1 a) is mounted on the trolley 3 by being fitted and inserted with an insertable / pullable overturn prevention pin 50 provided on the side of the trolley 3. I have to.

(2) Second Shielding Block 7 (2) The second shielding block 7 (2) has an offset structure having a horseshoe-shaped cross section, and the lower portion of the second shielding block has an offset structure having a rectangular cross-section at the bottom. Member 7 (2 bottom)
And a second shielding block upper member 7 (on the upper side) having an offset structure having a semicircular cross section at the top.

The liquid metal outlet pipe 38, the cooling water inlet pipe 39, and the cooling water outlet pipe 40 are integrally engaged with each other vertically. Further, the second shielding block lower member 7
(2 bottom) At the end, these pipes 38, 39, 40
Is provided with a notch space S for gripping provided with a gripping portion for gripping.

This facilitates the installation or removal of the liquid metal outlet pipe 38, the cooling water inlet pipe 39, and the cooling water outlet pipe 40 during maintenance and repair.

Further, the liquid metal outlet pipe 38, the cooling water inlet pipe 39, and the cooling water outlet pipe 40 are moved to both sides in order to secure a working space for the one-touch coupler 42 when the liquid metal inlet pipe 37 is attached and detached. It is arranged around.

The second shielding block lower member 7 (2 lower)
A plurality of positioning pins 48 are set on the upper surface of the carriage 3 to be oriented and set in an arbitrarily manner.

The second shielding block upper member 7 (2
The upper part is set on the upper surface part of the second shielding block lower member 7 (2 lower part) by a plurality of positioning pins 48, and is set in a fixed manner.

(3) Third Shielding Block 7 (3) The third shielding block 7 (3) has an offset structure having a horseshoe-shaped cross section, and is attached and detached by a remote handling device (not shown) during maintenance and repair. (7 (3) (#a) to 7 (3) with respect to the longitudinal direction to facilitate the operation
It has a divided structure (as in #d).

That is, a third shielding block lower member 7 (3 lower) having an offset structure having a lower rectangular cross section;
The upper part is formed of a third shielding block upper member 7 (upper part 3) having an offset structure having a semicircular cross section at its upper part.

The liquid metal port pipe 38, the cooling water inlet pipe 39, and the cooling water outlet pipe 40 are integrally engaged vertically by the third shielding block upper member 7 (3).

Further, the third shielding block upper member 7 (3
In the upper part, a notch space S for grip having a grip for gripping these pipes 38, 39, 40 is provided at the end.

This facilitates the installation or removal of the liquid metal outlet pipe 38, the cooling water inlet pipe 39, and the cooling water outlet pipe 40 during maintenance and repair.

The third shielding block lower member 7 (3 lower)
A plurality of positioning pins 48 are set on the upper surface of the carriage 3 to be oriented and set in an arbitrarily manner.

The third shielding block upper member 7 (upper 3) is
The orientation is set by a plurality of positioning pins 48 on the upper surface of the third shielding block lower member 7 (3 lower), and the third shielding block 7 (3) is installed.

(4) Dolly 3 When the target unit 6 is inserted into the neutron scattering container 29, the target unit 6 is inserted into the neutron scattering container 29.
An up / down driving gas cylinder 52 and a positioning lock pin 54 which are in close contact with each other are provided.

On the other hand, a rack member 56 is embedded in the floor of the building. The rack member 56 has a pin hole H at the tip end.
And are detachably engaged.

On the upper surface of the rear part 3 (#b) of the carriage,
Drive 58 for moving the vehicle forward and backward
It is mounted by being engaged with the rack member 56 through a pinion gear 60 rotatably inserted through (#b) and through which power can be transmitted. The drive device 58 includes a drive motor 58 (1), a speed reducer 58 (2), and a speed reduction drive transmission mechanism 58 (3).

The driving device 58 is provided with the liquid metal inlet pipe 3.
7 and the liquid metal outlet pipe 38, and the cooling water inlet pipe 39 and the cooling water outlet pipe 40 are covered with a reinforcing block member 62 having both functions of drip-proof and radiation shielding at the time of maintenance and repair removal.

Further, on the upper surface of the truck rear part 3 (#b),
A liquid metal cooling / water cooling system unit device (not shown) for circulating liquid metal and cooling water is mounted on the liquid metal cooling / water cooling system unit device. And cooling water inlet pipe 3
9 and the cooling water outlet pipe 40.

The cart 3 has a crawler type low floor roller mechanism 64 for transporting heavy objects. Then, the crawler type low floor roller mechanism 64 is mounted on a parallel rail 66 buried in parallel with the building side. Further, by providing a guide roller or the like (not shown), it engages with an offset groove portion F that facilitates linear movement.

(5) Expansion joints 68 and 69 One-touch coupler 41 of liquid metal inlet pipe 37 upstream of one-touch coupler 41 and one-touch coupler 42 of liquid metal outlet pipe 38
The target portion 6 is located on the downstream side of the neutron scattering container 29.
And an expansion joint 68 for absorbing the amount of displacement between the time when the carriage 3 is brought into close contact with and the time when the carriage 3 is detached, and the amount of thermal expansion during the neutron scattering operation.

Further, the liquid metal outlet pipe 38 can be integrally attached to the one-touch coupler 42, and the one-touch coupler 43, which is detachably attached at the same time, is connected to the cooling water inlet pipe 39 and the cooling water outlet pipe 40 by the liquid metal outlet pipe 40. It is provided integrally with the outlet pipe 38. On the upstream side and the downstream side of the one-touch coupler 43, respectively, the target unit 6 is inserted into the neutron scattering container 29 side, and the displacement amount between when the carriage 3 comes into close contact with and comes off, the one-touch coupler 42 and the one-touch coupler An expansion joint 69 is provided to absorb the difference in the amount of attachment / detachment stroke with respect to 43, and the difference between the amount of thermal expansion during operation of the neutron scattering device and the amount of thermal expansion in the liquid metal outlet pipe 38.

(6) Pipes The liquid metal inlet pipe 37 and the liquid metal outlet pipe 38, and the cooling water inlet pipe 39 and the cooling water outlet pipe 40 easily circulate or drain the liquid metal and cooling water in the pipes. So that it is inclined toward the outlet pipe side.

In the following places, a drain V is provided so that the residual liquid metal at the time of maintenance / repair detachment can be collected into a below-floor tank provided on the maintenance building side (not shown). Each of the V-shaped inclined grooves V is provided.

That is, the second shielding block lower member 7 below the one-touch coupler 41 of the liquid metal inlet pipe 37.
(2 bottom) floor surface, the hollow inner floor surface of the first shielding block 7 (1a) below the one-touch coupler 42 of the liquid metal outlet piping 38, the tip end floor surface of the bogie 3 at the junction, the cooling water inlet piping 39 And a hollow inner floor surface of the first shielding block 7 (1a) below the one-touch couplers 42 and 43 of the cooling water outlet pipe 40, and a front end floor surface of the bogie 3 at the junction.

(7) Suspension holes 70 for the lifting device The two tops of the disc-shaped flange member 27 and the first shielding block upper member 7 (1b) are remotely lifted during maintenance and repair. Holes for lifting equipment for lifting 7
0 (#a) and 70 (#c) are provided so as to be detachable from the common lifting tool device two-point lifting tool.

Then, the second shielding block upper member 7 (2
Upper) and the third shielding block upper member 7 (3 upper) (# a ~
At three places on each top of #d), hanging holes 70 (#d, #e, #f, #g, #h) for hoisting tool devices for performing remote lifting during maintenance / repair are provided. Each is provided so as to be detachable from a common three-point lifting device.

Next, the operation of the neutron facility target cart according to the present embodiment configured as described above will be described.

The target portion 6 integrally attached to the distal end surface of the cylindrical body member 23 having the disk-shaped flange member 27 having the plurality of lock pins 21 and the hollow metal seal ring 25 has the lock pins 21. , Second shielding block 7
It is unlocked by pressing the pressing rod 33 with the gas cylinder 35 of (2).

Then, in this state, the vehicle is driven forward through the pinion gear 60 by the driving device 58 mounted on the carriage 3.

Further, the target portion 6 is made of the neutron scattering container 2
After the disc-shaped flange member 27 is inserted into the target port 30 of FIG. 9 and is brought into close contact with the front flange 31 surface, the pressing of the gas cylinder 35 is released, and the lock pin 21 is moved toward the front flange 31 surface side. Lock and He
A gas tight seal is made.

After the bogie 3 is further advanced and pressed until the disc-shaped flange member 27 and the first shielding block 7 (1a) are in close contact with each other, the positioning lock pin 54 inserted into the bogie 3 is moved up and down. Positioning is performed by inserting the driving gas cylinder 52 into the pin hole H at the tip end of the rack member 56 buried in the building-side floor.

As a result, the first shielding block 7 (1
a), the second shielding block 7 (2) and the third shielding block 7 (3) are engaged with the neutron scattering container 29 side to shield radiation, and the neutron scattering operation is enabled.

After the neutron scattering operation is completed, the target unit 6
Is released from the neutron scattering container 29 side by the operation reverse to the above-described operation. That is, the driving device 58 mounted on the truck 3 performs reverse traveling via the pinion gear 60, and the truck 3 is carried into the maintenance building.

On the other hand, when the neutron scattering operation is being performed, the one-touch coupler 41 of the liquid metal inlet pipe 37
When the carriage 3 is brought into close contact with the neutron scattering container 29 due to the insertion of the target portion 6 by the expansion joint 68 provided on the upstream side of the liquid crystal outlet pipe 38 and on the downstream side of the one-touch coupler 42 of the liquid metal outlet pipe 38. And the thermal expansion during the neutron scattering operation are absorbed.

Further, a cooling water inlet pipe 39 and a cooling water outlet pipe 40 which are integrally attached to the one-touch coupler 42 of the liquid metal outlet pipe 38 and are detachably mounted at the same time.
The amount of displacement between the time when the carriage 3 is brought into close contact with and the time when the carriage 3 is detached, which is caused by inserting the target portion 6 into the neutron scattering container 29 by the expansion joints 69 provided on the upstream side and the downstream side of the one-touch coupler 43, The difference in the amount of attachment / detachment stroke between the one-touch coupler 42 and the one-touch coupler 43 and the amount of thermal expansion during the neutron scattering operation are absorbed.

Further, the target portion 6 and the cylindrical body member 2
It is not shown at the time of replacement of the old and new three parts, and at the time of inspection, maintenance, and repair of the components mounted on the liquid metal inlet pipe 37, the liquid metal outlet pipe 38, the cooling water inlet pipe 39, the cooling water outlet pipe 40, and the truck 3. The second shield block upper member 7 (2 upper) and the third shield block upper member 7 (3
Above) (#a to #d) are removed.

Thereafter, the one-touch coupler 42 of the liquid metal outlet pipe 38 and cooling through the maintenance / repair opening window W of the first shielding block 7 (1a) by a remote handling manipulator device with a visual inspection device (not shown). The one-touch coupler 43 of the water inlet pipe 39 and the cooling water outlet pipe 40 is separably locked when detached.

The second shielding block lower member 7 (2
Above, the one-touch coupler 41 of the liquid metal inlet pipe 37 is also separably locked when detached.

Thereafter, a remote handling pulling trolley device with a visual device (not shown) is further moved to the disk-shaped flange member 27.
By inserting and attaching to the side, the target unit 6 and
The cylindrical body member 23 is pulled out of the first shielding block 7 (1a) and removed. Then, the removed target portion 9 and cylindrical body member 23 are lifted by a two-point lifting tool of a common remote handling lifting tool device with a visual observation device (not shown).

Thus, the target portion 6 and the cylindrical body member 23 are transported to a waste treatment building (not shown) and discarded.

At this time, the liquid metal remaining in the one-touch coupler 41 of the liquid metal inlet pipe 37 and the one-touch coupler 42 of the liquid metal outlet pipe 38 is supplied to the second shielding block lower member 7 (2 lower). A floor surface, a hollow inner floor surface of the first shielding block 7 (1a), and a trolley 3 at the junction.
Through a drain V-shaped inclined groove V provided on the front end floor surface and into a below-floor tank provided on the maintenance building side (not shown).

The insertion and reassembly of the cylindrical body member 23 provided with the new target portion 6 and the disk-shaped flange member 27 are performed by operations reverse to the above-described operations at the time of separation. Will be

Further, in the first shielding block 7 (1a),
A configuration mounted on the trolley 3 such as a liquid metal cooling / water cooling system unit device on the second shielding block lower member 7 (2 lower) and the third shielding block lower member 7 (3 lower) (#a to #d). Inspection, maintenance, and repair of items are performed by a remote handling manipulator device with a visual inspection device (not shown).

Then, if necessary, the third shielding block lower member 7 (3 lower) (#a to #d) is gripped by the gripping notch space S disposed at the upper end thereof and removed, and a new one is obtained. It will be replaced.

As described above, in the trolley for neutron facilities according to the present embodiment, by pressing the pressing rod 33 by the above-described operation,
The target unit 6 can be easily unlocked.
Then, in this state, the carriage 3 is driven by the driving device 58.
Can easily be moved forward, and the target portion 6 can be inserted into the target port 30.

Then, the disk-shaped flange member 27 is brought into close contact with the surface of the distal end flange 31 to release the pressing of the gas cylinder 35, thereby locking the target portion 6 to the surface of the distal end flange 31 and airtight by He gas. Can be sealed.

Further, after the disc-shaped flange member 27 and the first shielding block 7 (1a) are pressed until they come into close contact with each other, the positioning lock pin 54 inserted into the carriage 3 is inserted into the pin hole H at the tip end. Thereby, the positioning of the target section 6 can be fixed.

Thereafter, the first shielding block 7 (1a), the second shielding block 7 (2) and the third shielding block 7 (3)
Respectively with the radiation shielding member of the building on the neutron scattering container 29 side, so that the radiation can be shielded, and the neutron scattering operation can be performed.

When the neutron scattering operation is performed,
The expansion joint 68 can absorb the amount of displacement generated when the carriage 3 is brought into close contact with and detached from the carriage 3, and the amount of thermal expansion during the neutron scattering operation. The expansion joint 6
By means of 9, it is possible to absorb the amount of displacement between when the carriage 3 comes into close contact and when it comes off, the difference in the amount of detachable stroke between the one-touch coupler 42 and the one-touch coupler 43, and the amount of thermal expansion during neutron scattering operation.

On the other hand, after the end of the neutron scattering operation, the target portion 6 can be detached from the front end flange 31 side by the operation reverse to the above-mentioned operation.

Further, for replacement of new and old parts, inspection, maintenance and repair, the upper member 7 (on the second) and the third
The shield block upper member 7 (3) (#a to #d) is removed, and the one-touch couplers 42 and 43 are separably locked through the maintenance / repair opening window W when detached. 6 and the cylindrical body member 23 can be removed from the first shielding block 7 (1a).

Further, the removed target portion 6 and cylindrical body member 23 can be transported to a waste treatment building for disposal. At this time, the liquid metal remaining in the one-touch coupler 42 can be collected in the underfloor tank via the drain V-shaped gradient groove V.

The insertion and reassembly of the cylindrical body member 23 can be performed by performing the operation reverse to the above-described operation at the time of separation.

Further, the inside of the first shielding block 7 (1a),
Inspection, maintenance, and the like of the liquid metal cooling / water cooling system unit devices provided on the second shielding block lower member 7 (2 lower) and the third shielding block lower member 7 (3 lower) (#a to #d).
The repair is performed by a remote handling manipulator device with a visual inspection device, and if necessary, a notch space for gripping disposed at the upper end of the third shielding block lower member 7 (3 lower) (#a to #d). It can be grasped and removed at S and replaced with a new one.

As described above, according to the present embodiment, it is possible to implement a target cart for a neutron facility in which components can be easily attached and detached, and which is suitable for maintenance and replacement of components by remote control. .

(Second Embodiment) A second embodiment of the present invention will be described with reference to FIGS.

FIG. 10 shows an example of the neutron facility target truck according to the present embodiment, and is a partial side sectional view showing the neutron facility target truck and the truck traveling underfloor drive device.

FIG. 11 is a plan view showing an example of a bogie traveling under-floor drive device.

FIG. 12 is a side sectional view showing an example of a lock type mechanism at the time of mounting the one-touch coupler.

FIG. 13 is a side view showing an example of a lock type mechanism at the time of mounting the one-touch coupler.

FIG. 14 is a front sectional view showing an example of a lock type mechanism at the time of mounting the one-touch coupler.

The same parts as those described in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
Here, only different parts will be described.

That is, as shown in FIGS. 10 and 11, the target cart for the neutron facility according to the present embodiment comprises a driving device 58 for moving the cart 3, a pinion gear 60, a positioning lock pin 54, and a positioning lock pin 54. An up / down driving gas cylinder 52 for driving the lock pin 54 is provided hanging down on the lower surface of the reinforcing floor cover member 72. Thereby, the carriage 3 is shortened.

The drive device 58 and the pinion gear 60
To the lower part 74 of the end of the bogie 3 in the maintenance building storage position for maintenance / repair for performing maintenance / repair,
It is also buried for radiation shielding.

In this case, the rack member 56 provided on the bottom surface of the truck 3 is engaged with the pinion gear 60 so as to be able to run, and the pin pin hole for positioning lock provided at the terminal end of the bottom surface of the truck 3 is provided. H and the positioning lock pin 54 are disposed so as to be detachably engageable.

The reinforcing floor covering member 72 on which the parallel rails 66 are laid includes a driving device 58 (a driving motor 58 (1), a speed reducer 58 (2), a speed reduction drive transmission mechanism 58 (3)), a pinion gear 60, At the time of maintenance / repair with the vertically driven gas cylinder 52, it is removed. Thereby, the reinforcing floor cover member 72 on which the parallel rails 66 are laid is interposed and inserted into the neutron scattering container 29 side of the reinforcing floor cover member 72 so as to be able to carry out the slide avoidance from the lower part of the end of the bogie 3. .

On the other hand, as shown in FIGS. 12 and 13, the one-touch coupler 42 of the lock-on-mount type is provided with a seal ring 82 inside the distal end member 80 on the socket 79 side, and the peripheral direction of the distal end portion is adjusted. A sleeve member 86 which spring-presses a plurality of lock balls 84 which are freely stored in the linear direction to the outside of the distal end member 80 so that the lock balls 84 can be covered and locked.
Is inserted.

A lock member 88 provided with a half hole and a lock hole on both sides of the tip member 80 on the socket 79 side.
The lock mechanism members 90 are attached to both sides of the sleeve member 86, respectively.

Further, when connecting or disconnecting the socket 79 side and the plug 91 side, a spring pressing type U-shaped lock pin 92 enabling the sleeve member 86 to be locked.
Equipped.

A lock groove 98 having a concave spherical cross section is provided outside the plug member 96 of the tip member 94 on the plug 91 side so as to be able to engage and lock with a plurality of lock balls 84. It is inserted and sealably engaged in the ring 82.

Next, the operation of the neutron facility target cart according to the present embodiment configured as described above will be described.

The carriage 3 is moved forward by a driving device 58 buried under the reinforcing floor cover member 72 provided with the parallel rails 66 and also serving as a radiation shield.

The carriage 3 is then brought into close contact with the neutron scattering container 29 side, and then the leading end pin hole H for positioning lock is used.
The lock pin 54 is inserted and positioning is performed.

When the carriage 3 is detached from the neutron scattering container 29, the operation is performed by performing the reverse operation of the above operation.

The driving device 58 and the pinion gear 6
At the time of maintenance / repair of the vertically driven gas cylinder 52, after removing the reinforcing floor cover member 72 inserted and inserted into the neutron scattering container 29 side by a remote handling lifting tool device with a visual device (not shown), The tip of 3 is the lower part 7
Slide 4 out.

Lock-type one-touch coupler 42 when mounted
Is separated, the U-shaped lock pin 92 is pulled up by a remote handling manipulator with a visual device (not shown) to release the half-break hole side of the lock member 88, and then the U-shaped lock pin 92 is removed. The sleeve member 86 is fixed by being pulled toward the lock hole side of the lock member 88 and inserted. As a result, the lock ball 84 is easily detached from the lock groove 98 having the concave spherical cross section.

On the other hand, when connecting the lock-type one-touch coupler 42 at the time of mounting, the U-shaped lock pin 92 is inserted into the half-break hole side of the lock member 88 by performing the reverse of the above-described operation. By doing so, the sleeve member 86 is fixed.

As described above, in the target truck for neutron facilities according to the present embodiment, by the above-described operation, in addition to the effects of the first embodiment, the driving device 5
8 is buried under the reinforcing floor cover member 72, the configuration of the truck 3 can be simplified, and
Can be shortened. Further, by adopting the one-touch coupler 42 having the configuration as shown in FIGS. 12 to 14, in addition to the effect of the first embodiment, an effect that the pipes can be easily connected can be obtained. Can be.

As described above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to such configurations. Within the scope of the technical idea described in the claims, those skilled in the art can come up with various modified examples and modified examples, and these modified examples and modified examples are also within the technical scope of the present invention. It is understood that it belongs to.

[0133]

As described above, according to the present invention,
It can be configured by combining components that can be easily attached and detached, so that a target cart for neutron facilities suitable for maintenance and replacement of components by remote control can be realized.

[Brief description of the drawings]

FIG. 1 shows an example of a neutron facility target cart according to a first embodiment, and is a partial side sectional view in a front part.

FIG. 2 is a plan view of the target cart for the neutron facility shown in FIG. 1;

FIG. 3 is a front view of the neutron facility target cart shown in FIG. 1 as viewed from a target portion side.

FIG. 4 is a partial side cross-sectional view of the neutron facility target cart shown in FIG. 1 when an upper shield is removed.

FIG. 5 is a plan sectional view of the neutron facility target cart shown in FIG. 4;

FIG. 6 is a view of a trolley for a neutron facility shown in FIG.
A arrow sectional drawing.

FIG. 7 is a view of a trolley B- of the target cart for the neutron facility shown in FIG.
B arrow sectional drawing.

FIG. 8 is a partial side cross-sectional view showing a rear part of the neutron facility target cart according to the first embodiment.

FIG. 9 is a cross-sectional view of a driving device.

FIG. 10 is a partial side cross-sectional view showing an example of a neutron facility target truck according to the second embodiment, showing a neutron facility target truck and a truck traveling underfloor drive device.

FIG. 11 is a plan view showing an example of a bogie traveling underfloor drive device.

FIG. 12 is a side sectional view showing an example of a lock type mechanism at the time of mounting the one-touch coupler.

FIG. 13 is a side view showing an example of a locking mechanism at the time of mounting the one-touch coupler.

FIG. 14 is a front sectional view showing an example of a lock-type mechanism when the one-touch coupler is mounted.

FIG. 15 is a perspective view of a target cart for a neutron facility according to the prior art.

FIG. 16 is a layout diagram of a target cart for a neutron facility according to the related art in a neutron facility.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Target cart for neutron facilities, 2 ... Wheel, 3 ... Cart, 5 ... Rail, 6 ... Target part, 7 ... Shielding block, 8 ... Target part block, 9 ... Plumming cavity, 10 ... Source room, 12 ... Target Truck handling room, 14: Target truck maintenance room, 16: Cooling piping, 21: Lock pin, 23: Cylindrical body member, 25: Hollow metal seal ring, 27: Disc-shaped flange member, 29: Neutron scattering container, Reference numeral 30: target port, 31: tip flange, 33: pressing rod, 35: gas cylinder, 37: liquid metal inlet piping, 38: liquid metal outlet piping, 39: cooling water inlet piping, 40: cooling water outlet piping, 42, 43: One-touch coupler, 44: Spring, 46: Stopper pin, 48: Positioning pin, 50: Fall prevention pin 52, a vertical drive gas cylinder, 54, a positioning lock pin, 56, a rack member, 58, a drive device, 60, a pinion gear, 62, a reinforcing block member, 64, a crawler type low floor roller mechanism, 66, a parallel rail, 68 69, expansion joint, 70, hanging hole, 72, reinforcing floor cover member, 74, lower part, 79, socket, 80, tip member, 82, seal ring, 84, lock ball, 86, sleeve member, 88, lock 90, a lock mechanism member, 91, a plug, 92, a U-shaped lock pin, 94, a tip member, 96, a plug member, 98, a lock groove.

Continued on the front page (72) Inventor Ryutaro Hino 2-4, Shirane, Shirakata, Tokai-mura, Naka-gun, Ibaraki Pref. Inside the Japan Atomic Energy Research Institute Tokai Research Institute (72) Inventor Masaki Kanaga 2, Shirano, Shirakata-shi, Tokai-mura, Naka-gun, Ibaraki No. 4 in the Japan Atomic Energy Research Institute Tokai Research Laboratory (72) Katsuhiro Haga Inventor Katsuhiro Hakukata, Tokai-mura, Naka-gun, Ibaraki Prefecture 2-4 Within Japan Atomic Energy Research Institute Tokai Research Institute (72) Inventor Hidetaka Kinoshita Tokai, Naka-gun Ibaraki Prefecture 2-4 Shirane, Shirahane, Murakamikata, Japan Atomic Energy Research Institute, Tokai Research Institute BE02 BE04 BE06 BE07 BE08 EA05

Claims (18)

[Claims] A target portion receiving radiated charged particles in a target port to generate neutrons; a seal portion provided on the target portion, for sealing and fixing the target portion to the target port side; A shielding part for shielding neutrons generated in the target port; a first fixing part for fixing the shielding part to the target part side; the target part, the seal part, the shielding part, and the first fixing part And a drive unit for driving the truck, when the target unit is installed in the target port, the drive unit transfers the truck to the target port side, and the seal unit By sealing the target portion to the target port side and fixed,
A target cart for a neutron facility, wherein the shielding portion is fixed to the target portion side by the first fixing portion. 2. A target portion receiving irradiating charged particles in a target port to generate neutrons, a seal portion provided on the target portion, and sealing and fixing the target portion to the target port side; A shielding portion for shielding neutrons generated in the target port, a gas cylinder provided in the shielding portion, and the gas cylinder is temporarily fixed to the target portion side by being pressed by the gas cylinder, and the gas cylinder A fixing pin for fixing the shielding portion to the target portion side by releasing the pressing by the target, a target portion, the seal portion, the shielding portion, a truck mounted with the fixing pin, and a driving portion for driving the truck. When the target unit is installed in the target port, Transporting the truck, on which the mounted shielding portion is temporarily fixed to the target portion side, to the target port side by the driving portion, and sealing the target portion to the target port side by the sealing portion. A trolley for neutron facilities, wherein the gas cylinder releases the pressing of the shielding part by the gas cylinder, and the shielding part is fixed to the target part side by the fixing pin. 3. The neutron facility target truck according to claim 1, wherein the target portion is provided at a predetermined position in the target port, and the positioning hole is provided. And a second fixing portion for fixing the cart based on the target cart. 4. The target cart for a neutron facility according to claim 3, wherein the first supply pipe is a pipe that supplies a liquid metal that generates neutrons when irradiated by the charged particles to the target unit. A first recovery pipe that is a pipe for recovering the liquid metal irradiated by the charged particles in the target portion; and a first supply pipe and the first recovery pipe, respectively, which are provided at each of the first pipe and the first recovery pipe. The amount of expansion, or based on a difference in the position of the cart between the case where the cart is not fixed based on the second fixing portion and the case where the cart is fixed based on the second fixing portion. A neutron facility target cart, comprising: a first expansion joint that expands and contracts in accordance with the difference in the position of the pipe. 5. The target cart for a neutron facility according to claim 3, wherein the second supply pipe is a pipe for supplying cooling water for cooling the target section to the target section, and the second supply pipe. A second recovery pipe, which is a return pipe of the cooling water supplied to the target portion by the supply pipe, and a second supply pipe and the second recovery pipe, respectively, wherein at least heat of both the pipes is provided. The amount of expansion, or based on a difference in the position of the cart between the case where the cart is not fixed based on the second fixing portion and the case where the cart is fixed based on the second fixing portion. A neutron facility target cart, comprising: a second expansion joint that expands and contracts in accordance with the difference in the position of the pipe. 6. The target cart for a neutron facility according to claim 4, wherein a second supply pipe which is a pipe for supplying cooling water for cooling the target section to the target section, and a second supply pipe. A second recovery pipe that is a return pipe of the cooling water supplied to the target portion; and a second supply pipe and the second recovery pipe, each of which is provided with a thermal expansion amount of at least the two pipes, or The position of the pipe based on the difference in the position of the bogie between the case where the bogie is not fixed based on the second fixing portion and the case where the bogie is fixed based on the second fixing portion A second expansion joint that expands and contracts in accordance with the difference amount, and a first expansion joint provided in the first supply pipe and a second expansion joint provided in the second supply pipe. At the same time removable First joint fixing means for physically fixing, simultaneously attaching and detaching the first expansion joint provided in the first recovery pipe and the second expansion joint provided in the second recovery pipe; A target cart for a neutron facility, comprising: a second joint fixing means for fixing the joint as possible as possible. 7. The target cart for a neutron facility according to claim 4, wherein at least one of the supply pipe and the recovery pipe is selected from among inspection, maintenance, and repair. A trolley for neutron facilities, comprising remote control means for performing any one of the above operations by remote control. 8. The target cart for a neutron facility according to claim 7, wherein the shielding unit includes a first holding unit that can hold the shielding unit on an upper side, and the remote control unit includes the first holding unit. 1, while holding and transferring the shielding unit, and holding the first holding unit to lift and transfer the shielding unit, transferring the shielding unit to the bogie, and replacing it on the bogie. A target cart for a neutron facility, wherein the shield unit is replaced by loading the shield unit. 9. The target truck for a neutron facility according to claim 4, wherein the supply pipe and the recovery pipe are respectively disposed in the shielding section, and are disposed in the shielding section. A target cart for a neutron facility, characterized in that an opening window for enabling maintenance of each of the pipes is provided in the shielding section. 10. The target truck for a neutron facility according to claim 9, wherein the supply truck is provided in the opening window, is interposed between the supply pipe and the expansion joint provided in the supply pipe, and supplies the supply pipe. A first coupler that connects the pipe and the expansion joint; a first coupler that is provided in the opening window and is interposed between the collection pipe and the expansion joint provided in the collection pipe; A target truck for a neutron facility, comprising: a second coupler that connects to an expansion joint. 11. The target cart for a neutron facility according to claim 10, wherein the coupler includes: an upstream tip member connected to an upstream side of a pipe; a downstream tip member connected to a downstream side of a pipe; A sleeve provided so as to cover an outer periphery of a joining portion between the upstream end member and the downstream end member; first connecting means for connecting the upstream end member to the sleeve; and a downstream end. A target cart for a neutron facility, comprising: a second connecting means for connecting a member and the sleeve. 12. The first connection means is integrally inserted into a hole provided on the upstream end member side and a hole provided on the sleeve side, and the first connection means is connected to the upstream end member. A first lock pin for connecting to the sleeve, wherein the second connecting means is integrally inserted into a hole provided on the downstream end member side and a hole provided on the sleeve side; The target cart for a neutron facility according to claim 11, wherein the second lock pin connects the downstream end member and the sleeve. 13. The method according to claim 10, wherein:
The target cart for a neutron facility according to claim 7, further comprising drain means for draining a residue remaining inside the coupler from the coupler. 14. The target cart for a neutron facility according to claim 1, wherein said target unit and said seal unit are detached from said cart by said detaching unit. A target carrier for a neutron facility, comprising: a waste transfer unit configured to lift and transfer the target unit and the seal unit as waste. 15. The neutron facility target cart according to any one of claims 4 to 13, wherein the target cart is provided in the supply pipe and the recovery pipe, respectively.
A second gripper capable of gripping the pipe, and a pipe lifting means for gripping the second gripper and lifting the pipe provided with the second gripper. Characteristic target cart for neutron facilities. 16. The neutron facility target cart according to claim 15, wherein the pipe lifting means grips the second grip and lifts a pipe provided with the second grip. Neutron facility target, wherein the replacement pipe is lifted by gripping a second gripping portion of the pipe and transferred to the bogie side to replace the pipe. Trolley. 17. The target truck for a neutron facility according to claim 1, further comprising a rail that guides the truck into the target port by running the truck. A target cart for a neutron facility, wherein the cart is shortened by providing the drive unit separately from the cart on a lower side. 18. The target truck for a neutron facility according to claim 1, further comprising a rail that guides the truck into the target port by running the truck. Burying means for burying the driving unit on the lower side, and covering the buried driving unit, and when performing maintenance on the driving unit, covering means for covering the driving unit; A target cart for a neutron facility, wherein the target cart is removed for maintenance of the drive unit.