JPH07228471A - Gas cylinder conveying rack - Google Patents

Abstract

PURPOSE:To provide a gas cylinder conveying rack allowing many relatively long gas cylinders each having a connecting opening at the lower end to be safely inserted/removed into the rack from the side and capable of being assembled or disassembled. CONSTITUTION:This gas cylinder conveying rack is constituted of multiple units 1 capable of being connected or separated in the thickness direction, each unit 1 is horizontally connected with vertical structural angles 2 and horizontal structural angles 3, and the whole is formed into a lattice shape to constitute a frame 4. Arms 6 are protruded on the frame 4, and flange sections 5 are formed at the tips. Seat faces 9 for the flange pieces 8 of gas cylinders 7 are formed on the upper faces of the arms 6, and a pair of hook sections 11 are separately provided at both the upper and lower end sections of the unit 1 or the end frames connected to it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rack for transporting a large number of nitrogen gas cylinders stored in a building of a nuclear power plant.

[0002]

2. Description of the Related Art A hydro control unit is connected to a drive mechanism for a control rod that is inserted into and removed from a core of a nuclear power plant. This hydro control unit has a nitrogen gas cylinder and an accumulator unit, and conventionally, the hydro control unit was provided for each of a large number of control rod drive mechanisms. Since a nitrogen gas cylinder with a relatively small capacity is sufficient, a relatively low height was sufficient. Therefore, there was no particular obstacle to the transportation and installation.

[0003]

However, since the conventional hydro control unit requires as many control rod drive mechanisms as there are in the reactor, a lot of time and labor is required for maintenance and maintenance of the hydro control unit. Was. Therefore, it is desirable to reduce the number of the hydro control units as much as possible. The present invention is 2
One hydro control unit that can be used in common for one control rod drive mechanism is to be provided, and the capacity of the gas cylinder that is the unit is doubled and the height is almost doubled. In this case, a transport rack is provided. Further, such a large-capacity and long-length gas cylinder can be easily inserted into and removed from the rack, and the rack can be easily loaded and unloaded on / from a transport vehicle, and a plurality of units can be mounted on the rack unit body. It is an object of the present invention to provide a rack that enables a pressure resistance test with a gas cylinder stored.

[0004]

To achieve the above object, a rack for transporting a gas cylinder according to the present invention comprises a plurality of units 1 which can contact each other in the thickness direction, and each unit 1 comprises a plurality of vertical members. 2, a plurality of horizontal members 3 are joined and fixed in a plane, and a frame 4 is formed in a grid pattern as a whole.
A plurality of substantially equal lengths, which are juxtaposed to each other at equal intervals and have one end fixed to one flat surface of the frame 4 and the connecting flange portion 5 formed at the other end. Provided on the upper surfaces of the arms 6 and the respective arms 6,
A pair of flange pieces 8 projectingly provided on the outer periphery of the upper end of the gas cylinder 7 are seated, and a seating surface 9 to which the flange pieces 8 are fastened and fixed via fasteners 12 and the frame 4 are detachably fastened. , A plurality of U bolts 10 for fastening the outer circumference of the body of the gas cylinder 7 to the frame 4 thereof, and each of which is connected to the unit 1 or the unit 1 so that the hoisting end of the hoisting machine is locked. The upper and lower end portions of the end portion frame 30 are spaced apart from each other, and the lifting locking portions 11 are provided.
Are provided in pairs, and the flange portion 5 of the unit 1 located on the back side is detachably connected to the frame 4 of the unit 1 located on the front side via fasteners 12. The gas cylinder 7 has a gas inlet / outlet at its lower end.

The rack according to a second aspect of the present invention is the rack according to the first aspect, wherein the length of the pair of vertical mold members 2 located on both sides of the frame 4 is longer than that of the vertical mold member 2a located in the middle. Conveying hanging ears 23 project from the upper end of the short vertical mold member 2a located in the middle, and the lifting locking portions 11 are provided on the side surfaces of the long vertical mold members 2 located on both sides. Further, the invention according to claim 3 is such that, in claim 1, an end frame 30 is arranged at the front ends of the plurality of units 1 connected in the thickness direction, and the total thickness thereof is larger than the length of the vertical mold member 2. The end frame 30 is provided with a plurality of hanging ears 22 for lateral stacking on a vehicle.

[0006]

In the rack of the present invention, as shown in FIGS. 1 and 2, the respective units 1 are connected to each other via fasteners 12 such as bolts and nuts so as to be separable. Therefore, the front of the frame 4 of the unit 1 can be opened and the plurality of gas cylinders 7 can be detachably accommodated in the unit 1 from the front side thereof, and the two can be fastened and fixed. Therefore, the attachment / detachment of the gas cylinder 7 becomes extremely easy. Further, the ends of the suspension wires 27 of the hoisting machine can be locked to the locking portions 11 provided in pairs at the upper and lower ends of the unit 1, respectively, and can be turned upside down in the air. As a result, the gas inlet / outlet located at the lower end of the gas cylinder 7 can be directed upward, and the liquid for pressure resistance test can be inserted from there to perform the pressure resistance test of the gas cylinder 7. That is, it is possible to safely and efficiently perform a pressure resistance test on a plurality of gas cylinders 7 with the plurality of gas cylinders 7 housed in the unit 1.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows a unit 1 which constitutes the rack of the present invention.
2 is an explanatory view of the assembly thereof, FIG. 3 is a plan view of the rack 33 showing the assembled state, and FIG. 4 is a side view of the same. Further, FIG. 5 is an explanatory view of mounting the gas cylinders 7 one by one from the rack 33 transported on the floor concrete 36 and mounting them on the support 34 of the wall concrete 35, and FIG. 6 is a rear view of the cylinder transporting truck 13. 7 is the same plan view. This rack for transporting gas cylinders is for transporting a large number of nitrogen gas cylinders used in a control rod drive mechanism of a nuclear power plant, and has a plurality of units 1 which can be contacted and separated from each other. Each unit 1 includes a pair of long vertical members 2 located on both sides and three short vertical members 2a positioned in the middle at the upper and lower end portions respectively.
Thus, the whole frame is formed in a lattice shape in parallel by welding or bolting in a plane and forms a frame 4.

Five arms 6 are respectively abutted at equal intervals on the upper and lower sides of the frame 4, one end of which is fixed to the frame 4 by means such as welding, and a flange for connection to the other end. The part 5 is integrally formed. The interval between the opposing arms 6 is formed to be larger than the diameter of the gas cylinder 7 housed between them, and shorter than the distance between the tips of the flange pieces 8 projecting on both sides of the gas cylinder 7. A bolt hole 25 is formed on the arm 6 at a position aligned with the bolt hole formed on the arm 6. Further, a plurality of bolt holes 2 are formed in the flange portion 5 at the tip of the arm 6.
4 is bored, and a bolt hole is bored in the back surface of the vertical mold member 2 at a position aligned with the bolt hole 24.

Further, a pair of locking portions 11 are fixed to the side surfaces at both upper and lower ends of the long vertical member 2 by means such as welding. Further, a pair of hanging ears 23 are fixed to the upper end surface of the short vertical member 2a at target positions with respect to the center of the rack. A channel member 37 is fixed to the lower front surface of the frame 4, and a pair of bolt holes 25 for inserting the U bolts 10 are formed in the channel member 37 between the arms 6 at equal intervals. In this embodiment, the unit 1 thus constructed is composed of four to six units to form one rack. And that rack 33
An end frame 30 is arranged on the front surface of (FIG. 3). The end frame 30 is formed in substantially the same manner as the frame 4 of the unit 1, and a pair of hanging ears 22 are provided on the upper and lower sides of the front surface of the frame. The hanging ears 22 are used for hoisting when a rack 33 accommodating a large number of gas cylinders 7 is horizontally stacked on a transportation vehicle such as a truck or a trailer. This is because the height of a gas cylinder is abnormally high and it cannot be transported, so racks are stacked side by side.

Next, a method of using the rack of the present invention will be described. First, the unit 1 is erected as shown in FIG. 1, the hanging wire 28 is locked to the hanging ear 22 of the gas cylinder 7, and the hanging wire 28 is lifted. Then, the gas cylinder 7 is laterally inserted between the pair of arms 6 and 6, the flange piece 8 provided at the lower end of the hanging ear 22 is placed on the seating surface 9, and the bolt hole of the flange piece 8 and the seating surface 9 are placed. Align with the upper bolt hole 25. Then, a bolt (not shown) is inserted there and fastened with a nut. At the same time, the U-bolt 10 is wound around the lower periphery of the gas cylinder 7, both ends thereof are inserted into the bolt holes 25 of the channel material 37, and the nut 29 is screwed to the tip thereof to completely fix the gas cylinder 7 to the unit 1. To do. Similarly, the gas cylinder 7 is mounted between the arms 6 and 6.

Next, as shown in FIG. 2, another unit 1 is arranged on the front surface of the unit 1, the bolt hole 24 of the arm 6 is aligned with the bolt hole of the vertical member 2 of the front unit, and the bolt is inserted there. At the same time, fix both with a nut. The same work is performed on the upper and lower arms 6 to completely fasten and fix the front and rear units 1 and 1. Next, a plurality of gas cylinders 7 are attached to the front side unit 1 in the same manner as described above, and while sequentially joining the respective units,
A plurality of gas cylinders 7 are attached to each. Then, the end frame 30 is fixed to the unit 1 in the front row. In this way, a large number of gas cylinders 7 can be stored in the rack.

Next, as an example, a pressure test of the gas cylinder 7 may be performed as follows. 2 to 4, the unit 1 in the front row and the end frame 30 are integrated, and they are separated from the other units 1. For that purpose, the bolts and nuts fastened to the bolt holes 24 of the arm 6 of the rear unit can be removed. Then
Locking portions 11 provided at the upper and lower ends of the unit 1 in pairs.
1, the wire end is locked, and the pipe 26 in FIG. 1 is positioned upward by lifting it with at least two hoisting machines and repeating it up and down. By applying pressure, a pressure resistance test can be performed for each gas cylinder 7. In addition, in order to repeat the unit 1 upside down, without using the locking portion 11 of the unit 1,
It is also possible to repeat using the pair of upper and lower hanging ears 22 of the end frame 30.

Next, in order to carry out a pressure test of the gas cylinder of the unit 1 in the second row, the end frame 30 is separated from the unit 1 in the front row, and it is connected to the second row.
The second row unit is separated from the third row unit 1. Then, the withstand voltage test may be performed in the same procedure as described above. In order to combine a plurality of units 1 each containing a gas cylinder 7 as shown in FIGS. 3 and 4 and to transport them from a factory to a nuclear power plant, a pair of upper and lower hanging ears 22 protruding from the front surface of the end frame 30 are used. To lift the rack 33 and stack it horizontally on a truck or trailer.
When the rack 33 transported in this way has an unfinished upper part of the building of the power plant and the floor surface and wall surface for installing the nitrogen gas cylinder are completed, the whole rack is lifted by a large crane and placed on the floor. I'll do it.

When the cylinder installation wall surface and ceiling surface are completed, as shown in FIG. 5, the wall concrete 3
A pair of upper and lower supports 34 projecting from the gas tank 5 are used to transport the gas cylinders 7 by using the cylinder carrier truck 13.
Transfer from. For that purpose, in FIGS. 3 and 4, first, the end frame 30 is removed, and the front of the cylinder carrier truck 13 is brought close to the gas cylinder 7. Then, a wire is hung from the hook of the chain block 19 which is hung from the frame of the top 20 of the cylinder transporting truck 13.
The wire end is locked to the hanging ear 22 of the gas cylinder 7. Then, the bolts and nuts for fastening and fixing the flange piece 8 of the gas cylinder 7 and the arm 6 are removed. At the same time, the U-bolt 10 that fastens the lower part of the gas cylinder 7 is removed, and the gas cylinder 7 is transferred to the cylinder carrier 13. The cylinder transporting carriage 13 has a carriage body 14 and a plurality of steel ball type casters 16 projectingly provided on the lower surface thereof, and a top portion 20 for suspending the chain block 19 is provided on the upper end thereof.

A shoe 15 is provided at the front of the lower end to support the outer circumference of the gas cylinder 7. Further, a ladder 21 is provided on the back side of the cylinder transporting truck 13, which facilitates the operation of locking the hook end of the chain block 19. At the same time, as shown in FIGS. 5 to 7, a pair of weight carriages 18 are provided on both sides of the rear portion of the cylinder transporting carriage 13, and a counterweight 17 made of an iron plate is attached to the weight carriages 18 so that the center of gravity of the entire body is lowered. It is arranged so as to prevent the cylinder transport cart 13 from falling. When the work for attaching the gas cylinders 7 in the front row to the support 34 of the wall concrete 35 is completed in this way, the unit 1 in the front row is removed, and the gas cylinders 7 in the second row are sequentially installed on the support 34 in the same manner.
The unit 1 thus removed is disassembled and carried out from the interior of the building.

[0016]

The rack for transporting a gas cylinder of the present invention is
A plurality of units 1 are configured to be able to come in contact with and separate from each other in the thickness direction, a pair of flange pieces 8 of a gas cylinder 7 are seated on the seating surfaces 9 of the respective arms 6 to be fastened and fixed, and the body of the gas cylinder 7 is The outer circumference of the part is U bolt 10 on the frame 4.
The gas cylinder 7 can be easily loaded and unloaded from the rack 33 from the lateral side in the thickness direction of the rack. That is, unit 1
With the front side of the unit open, the gas cylinder 7 can be attached and detached from the side while the unit 1 is standing. Further, it is possible to transport the entire rack in a state where the plurality of units 1 equipped with the respective gas cylinders 7 are joined to each other, which facilitates loading and unloading on the transport vehicle.

With the gas cylinder 7 attached to each unit, the unit body can be turned upside down, whereby the gas inlet / outlet provided at the lower end of the gas cylinder 7 is located at the upper end, and the liquid is discharged from there. The pressure resistance test of the cylinder can be performed by supplying and applying pressure to the liquid. This is because the pair of locking portions 11 is provided at the upper and lower ends of each unit 1, so that the end portions of the two hoisting machines are locked to the locking portions 11 at the upper and lower ends, respectively.
Because it can be turned upside down in the air. Further, according to the invention of claim 2, since the transport hanging ears 23 of the entire rack are provided on the upper end of the short vertical member 2a,
Even if the unit 1 is repeatedly turned upside down, that portion does not contact the floor surface, and the unit 1 can be stably erected on the floor in the opposite direction.

[Brief description of drawings]

FIG. 1 is a perspective view of a unit 1 that constitutes a rack for transporting a gas cylinder of the present invention.

FIG. 2 is an exploded view of the rack.

FIG. 3 is a plan view of the rack.

FIG. 4 is a side view of the rack.

FIG. 5 is an explanatory view of taking out the gas cylinder 7 from the rack and installing it on the support 34 of the wall concrete 35.

FIG. 6 is a rear view of the installation cylinder transporting carriage 13.

FIG. 7 is a plan view of the installation cylinder transporting carriage 13.

[Explanation of symbols]

 1 Unit 2 Vertical Material 3 Horizontal Material 4 Frame 5 Flange 6 Arm 7 Gas Cylinder 8 Flange Piece 9 Seating Surface 10 U Bolt 11 Locking Part 12 Fastener 13 Cylinder Conveying Cart 14 Cart Main Body 15 Shoe 16 Steel Ball Caster 17 Counter Weight 18 Weight trolley 19 Chain block 20 Top 21 Ladder 22 Suspended ear 23 Suspended ear 24 Suspended ear 24 Bolt hole 25 Bolt hole 26 Pipe 27 Suspended wire 28 Suspended wire 29 Nut 30 End frame 31 Flange 33 Rack 34 Support 35 Wall concrete 36 Floor Concrete 37 channel material

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Akihiko Kobayashi No.8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Toshiba Isogo Engineering Center Co., Ltd.

Claims (3)

[Claims] 1. A plurality of units 1 which can contact each other in the thickness direction, and each unit 1 has a plurality of vertical mold members 2 and a plurality of horizontal mold members 3 joined and fixed in a plane, and the whole unit is formed into a lattice shape. Substantially, the formed frame 4 and the formed frame 4 are juxtaposed at the same height and at equal intervals, and one end of each of the frames 4 is fixed and projected on one plane, and the connecting flange portion 5 is formed on the other end. A plurality of arms 6 having the same length and a pair of flange pieces 8 provided on the upper surface of each of the arms 6 and projecting from the outer periphery of the upper end portion of the gas cylinder 7 are seated, and the flanges are connected via fasteners 12. A seating surface 9 to which the piece 8 is fastened and fixed to the frame 4 is detachably fastened,
A plurality of U bolts 10 for fastening the outer circumference of the body of the gas cylinder 7 to the frame 4 thereof; Edge frame 3
The upper and lower ends of 0 are provided with a pair of lifting locking portions 11 spaced apart from each other, and the flange portion 5 of the unit 1 positioned on the back side
The frame 4 of the unit 1 whose front side is located
A rack for transporting a gas cylinder, which is configured to be detachably connected to the gas cylinder 7 through a fastener 12, and the gas cylinder 7 has a gas inlet / outlet formed at a lower end thereof. 2. The pair of vertical mold members 2 located on both sides of the frame 4 is formed to have a length longer than that of a vertical mold member 2a located in the middle, and a short vertical mold member 2a located in the middle. A rack for transporting a gas cylinder, in which a suspending ear 23 for transporting is projectingly provided at an upper end, and the suspending portions 11 for suspending are provided on side surfaces of long vertical members 2 located on both sides. 3. The end frame 30 according to claim 1, wherein the end frames 30 are arranged at the front ends of the plurality of units 1 connected in the thickness direction, and the entire thickness thereof is smaller than the length of the vertical mold member 2. The end frame 30 is provided with a plurality of hanging ears 22 for lateral stacking on a vehicle.