JPS6141512Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a pipe joint, and more particularly to the structure of a pipe joint that allows pipes to be quickly and easily attached and detached by remote control.

In general, towers and tanks used in spent nuclear fuel reprocessing plants, waste liquid treatment plants for nuclear material with high levels of radioactivity, or plants filled with highly concentrated toxic gases are subject to corrosion due to the materials they contain. Many of them are sexual.

Therefore, there are many chances that the towers and tanks used for the above-mentioned purposes and the piping connected thereto will corrode or break down, and if such a situation occurs, they must be replaced with new ones. Incidentally, such replacement work requires the installation and removal of a large number of pipes installed in towers and tanks, and must be performed by remote control to ensure the safety of the workers.

Under the above-mentioned circumstances, there is a need for a simple pipe joint structure that allows each pipe to be quickly and easily connected and removed by remote control in this type of tower and tank.

The present invention has been made in view of this point.

First, before describing the configuration of the present invention, an outline of the equipment used in the remote-controlled piping joint of the present invention will be explained.

Figures 1 and 2 are schematic diagrams of towers and tanks used in spent nuclear fuel reprocessing plants and waste liquid treatment plants with high levels of radioactivity; Figure 1 is a front view;
FIG. 2 is a plan view thereof.

The tower body 1 is attached to a removable stand 3 via a bracket 2.
The removable pedestal 3 is removably attached to a fixed pedestal 5, which is fixed to a foundation 4 and has extensions 5a in two directions, by means of fixed hardware 6.

In practice, machining is performed at the position where the fixed hardware 6 is provided, and accurate positioning of the mounting hardware is performed here. The fixed pedestal 5 and the removable pedestal 3 are housed in a room having a foundation 4 (not shown), and a remote control device such as a power manipulator is disposed above the foundation 4. (A large number of towers and tanks as shown in FIG. 1 are arranged in the front and back direction of the paper surface of the paper, and windows W are provided along the towers and tanks as shown in FIG. 2.) A large number of fixed pipes 7 are directly attached to the tank body 1, and a flange 8 through which pipes 9 are fixed is attached, and the other end of the fixed pipes 7 is supported on a removable frame 3 which is machined. 10, and the pipe 9 is connected to the pipe joint 1 through the pipe joint 12 and pipe 13.
1, respectively.

On the other hand, the end of the fixed pipe 14 led into the room is attached to a pipe joint 16 attached to the extension part 5a of the fixed frame 5 via a support 15 machined.

And between the piping joints 11 and 16 there is a detachable piping 1.
7 is provided. Note that machining is also performed on the extension portion 5a of the fixed frame 5.

Further, a large number of pipe joints 11 and 16 are arranged in a line on both sides of the detachable pedestal 3 and on the extension 5a of the fixed pedestal 5, respectively. In the above example, the piping joints are arranged in four rows as shown in FIG.

By arranging the pipe joints 11 and 16 in this manner, remote control becomes easy. That is, in reality, the manipulator is operated while checking the positions of the piping joints 11 and 16 through the monitoring window W shown in FIG. 2, but in this case, the initial position of the manipulator is aligned with the first piping joints 11 and 16. Thereby, the piping joints can be remotely operated one after another by simply performing two-dimensional positioning. Furthermore, since the positions of the many piping joints 11 and 16 are the same, there are excellent effects such as the ability to significantly reduce the number of spare parts.

The present invention relates to the improvement of piping joints used in equipment including towers and tanks, and the structure of the present invention to achieve the above object is a pipe joint that connects two orthogonal or diagonal pipes. , a fixed joint body and a movable joint body are configured such that they are joined by a conical inclined surface, a fixed-side piping is connected to the fixed joint body, a detachable piping is connected to the movable joint body, and the inclined surface A bolt is rotatably extended on the opposite side, a movable support is screwed onto the bolt, a plurality of claw members are swingably supported on the movable support, and the claw members are attached to the movable support. When the movable joint body is moved, it opens and closes to engage the fixed joint body and press the movable joint body against the fixed joint body, thereby pressing the conical inclined surfaces formed on the connecting surfaces of both joint bodies. This is a remote-controlled piping joint characterized in that it is configured to be connected to each other.

Next, embodiments of the present invention will be described with reference to the drawings.

Figure 3 is a side sectional view showing the main parts of the present invention.
0 is a fixed side joint body, and a fixed pipe 21 is fixed to the lower surface of this joint body. Reference numeral 22 denotes a moving joint body, and a detachable pipe 23 (corresponding to the detachable pipe 17 in FIGS. 1 and 2) is fixed to the side surface of this joint body.

Note that, although the fixed pipe 21 and the movable pipe 23 are normally perpendicular to each other as shown in FIG. 3, they may be diagonally oriented at an angle other than the right angle depending on the case. A frame body 24 is fixed to the upper part of the moving side joint body 22 with bolts 25, and the bolts 2 are fixed to the frame body 24.
6 are rotatably connected, and this bolt 26
A movable support 27 is screwed to the movable support 2.
Claw members 28, 28a are attached to pins 29, 29 on both sides of 7.
It is swingably supported by a.

The claw members 28, 28a have a claw portion 28b at the lower end,
28c are provided, respectively, and are adapted to engage with the lower surface of the fixed side joint body 20. Further, a bolt head 30 for an impact wrench is provided at the tip of the bolt 26.

Next, the operation of the piping joint according to the present invention will be explained.

Figure 3 shows a fixed side joint body 20 and a movable side joint body 22.
In this state, the movable support 27 is pulled up by the bolt 26 as shown by arrow F, and the pin 2 is connected to the movable support 27.
Claw members 28, 28a supported by 9, 29a
The claws 28b and 28c provided at the ends of the fixed side joint body 20 grip the lower surface of the fixed side joint body 20, and the both joint bodies 20,
A conical slope 20 formed on the joining surface of 22
a and 22a are pressed and brought into contact. A flat surface is provided at the tip of this slope 22a,
An O-ring 31 is provided on this plane to maintain airtightness. In addition,
The conical slope provided on the joint body has a centering function.

Next, when releasing the remote control piping joint connected as described above, the moving support 27 is moved in the direction opposite to the arrow F by engaging and driving the driving part of the impact wrench with the bolt head 30. By moving in the direction, the pressing force of both joint bodies 20, 22 is released, and the inner surfaces of the claw members 28, 28a contact the upper corners of the moving joint 22, opening as shown by the two-dot chain line. The claw portions 28b and 28c can be separated from each other by a greater distance than the stationary joint body 20.

When the state is reached, the detachable pipe 23 fixed to the joint body 22 can be removed from the fixed pipe 21 by moving the movable joint body 22 upward.

Note that the claw members 28, 28a are bent as shown in FIG. 3, and are given a rotational moment due to their own weight that rotates toward the joint body 22 around the pins 29, 29a, causing the bolt head 30 to rotate. Therefore, when the movable support member 27 is moved upward, the claw portions 28b and 28c automatically engage with the lower part of the fixed joint hand body 20. In the embodiment of the present invention, the movement direction of the pawl member is regulated by its own weight, but the present invention is not limited to this, and it is clear that a spring may be used, for example.

The frame body 24 also restricts the movement of the claw members 28, 28a, so that the claw members can move between the solid line and the two-dot chain line.

As described in detail above, the present invention provides the fixed side joint body 2
0, the moving side joint body 22, and this moving side joint body 2
2, a movable support 27 screwed onto this bolt 26, and a movable support 27 connected to
It consists of claw members 28, 28a which are swingably supported by the movable joint body 20, 28a. 22 are formed with inclined surfaces 20a and 22a that engage with each other, and by driving the bolt 26, the movable support body 27 is moved and the claw members 28, 2 are moved.
8a is configured to engage with or disengage from the fixed side joint body 20, and the bolt 26
The claw member can be easily opened and closed by fitting and driving the driving part of the impact wrench into the bolt head 30 provided on the head of the bolt, and the joint body 22 is pressed against or separated from the joint body 20. It is possible to remotely control the manipulator to fix the fixed piping 21.
The movable pipe 23 can be easily attached to and detached from the movable pipe 23.

Therefore, according to the present invention, it is possible to easily attach and detach a large number of piping installed in columns and vessels, and it is possible to attach and detach columns and vessels under isolated conditions as described at the beginning.

Although not described in detail in the embodiments of the present invention, the detachable piping is provided with pipe joint bodies at both ends, and the detachable piping can be disconnected by disconnecting the piping joints. This creates a large space between the pipes, which can be used to easily replace the columns and tanks.

[Brief explanation of the drawing]

FIG. 1 is a front view schematically showing the apparatus including columns and tanks, and FIG. 2 is a plan view thereof. FIG. 3 is a front view of the remote-controlled piping joint according to the present invention, FIG. 4 is a sectional view of the same side, and FIG. 5 is a plan view of the same. 1... Tower tank main body, 3... Detachable mount, 5... Fixed mount, 11, 12... Piping joint, 13... Piping,
14... Fixed piping, 16... Piping joint, 20...
Fixed side joint body, 21... Fixed piping, 22... Moving side joint body, 23... Moving piping, 24... Frame body, 2
5... Bolt, 27... Moving support, 28, 28
a...Claw member, 30...Intoc trench head.

Claims (1)

[Scope of utility model registration request] A joint that connects two orthogonal or oblique pipes, and is configured such that a fixed joint body and a movable joint body are joined by a conical slope, and the fixed side pipe is connected to the fixed joint body. A detachable pipe is connected to the movable joint body, and a bolt is rotatably extended on the opposite side of the inclined surface, a movable support body is screwed to the bolt, and a plurality of claw members are attached to the movable joint body. This claw member opens and closes when the movable support body is moved, engages with the fixed joint body, presses the movable joint body against the fixed joint body, and presses the movable joint body against the fixed joint body. A remote-controlled piping joint characterized in that it is configured to connect conical inclined surfaces formed on the connecting surfaces by pressing them together.