JPH02142994A - Pipeline setting device - Google Patents

Abstract

PURPOSE:To facilitate a batch connection at time of plenty of pipelines in number as well as to make the extent of sealability securable by adopting a gasket, turning to a plane seal, in the tip of an elastic joint with flexibility even in the axial direction, and making a joint inner diameter larger than a gasket bore. CONSTITUTION:In a pipeline setting device, plural pieces of pipelines 3 are connected to a bracket 2 locked to a base 1, and an elastic joint 4 with flexibility, namely, elasticity in the axial direction such as an angle rubber bellows and an expansion joint is connected to each end of these pipelines 3, and other ends of the joint 4 and held together by a header plate 5. Then, this plate 5 is connected to a pneumatic cylinder 7 attached to the bracket 2 by connecting fittings fixed to this plate, and it is moved as far as a stroke (l) by operation of the cylinder 7. Next, when the plate 5 is moved by this stroke (l), lip-form packing 8 attached to pipe port of the plate 5 is pressed to a flange surface 10 of a feedwater port of a feedwater unit 9 set up on the base 1, thus connection of a duct line takes place.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a piping attachment/detaching device, and more particularly to a piping attachment/detachment device suitable for use in equipment where piping is frequently attached and detached, such as a unit of a continuous casting machine.

[Conventional technology]

As described in Japanese Patent Publication No. 52-27845, the conventional device has a movable sleeve attached to the supply side, and connects piping by pressing the tip of this sleeve against the supplied side through a gasket. It had become.

[Problem to be solved by the invention]

The above-mentioned conventional technology has the advantage that the piping can be easily attached and detached without using bolts, but since the tip of the sleeve is pressed against the guide of the water supply hole entrance on the supplied side, it is difficult to connect both. It is necessary that there is no misalignment, and when there are many sleeves, it is difficult to align each pipe line to connect all the sleeves at once, and if there is even one poor fit, the piping will be damaged. I have a problem where I can't connect.

In addition, since the tightening force of the seal at the connection part was dependent on external force from a hydraulic cylinder, etc. provided separately from the pipe system, this external force source required reliability, and a decrease in output could induce leakage. There was also a problem.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a pipe attachment/detachment device that allows easy attachment/detachment of piping.

[Means to solve the problem]

The above purpose is to use elastic joints that are flexible in the axial direction, such as angle-shaped rubber bellows or expansion joints, instead of sleeves in conventional devices, and to use gaskets that form flat seals at the tips of the elastic joints. This is achieved by making the inner diameter of the elastic joint larger than the diameter of the gasket. Preferably, a plurality of elastic joints are attached to one header plate, and a pressure spring is arranged between the supply-side fixing part and the header plate.

[Effect]

Since the gasket is pressed against a flat surface to seal the flat surface,
Misalignment is allowed within the range of the dimensional difference between the diameter of the gasket and the diameter of the water supply hole on the supply side. Therefore, even if there are a large number of pipes, they can be easily connected all at once. In addition, since the inner diameter of the elastic joint is larger than the diameter of the gasket, when internal pressure acts on the pipe, a thrust acts in the axial direction according to the difference in area between the cross section of the gasket and the cross section of the elastic joint, and this thrust acts on the gasket. It acts to press against the other plane.

Therefore, sealing performance is easily ensured.

Furthermore, by attaching a plurality of pipes to one header plate, it becomes easier to attach and detach the pipes all at once.

Furthermore, by providing a push spring between the supply side and the header plate, the piping is automatically connected when the operation of the header plate is released, and the normally "closed" state can be maintained.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the pipe attachment/detachment device, a plurality of pipes 3 are connected to a bracket 2 fixed to a base 1, and the ends of each pipe 3 are provided with axial flexibility, such as an angle-shaped rubber bellows or an expansion joint. The elastic joints 4 are then connected and the other ends of the elastic joints 4 are held together by a header plate 5. The header plate 5 connects a pneumatic cylinder 7 attached to the bracket 2 with a connecting fitting 6 fixed thereto.
The pneumatic cylinder 7 moves by a stroke Q by the operation of the pneumatic cylinder 7. When the header plate 5 moves by the stroke Q, the lip-shaped gasket 8 suitable for a face seal attached to the piping port of the header plate 5 is pressed against the flange surface 1o of the water supply hole of the water supply unit 9 arranged on the base 1. The pipes are then connected.

The required output that the pneumatic cylinder 7 should provide is the force to move the header plate 5 while bending the elastic joint 4 when no internal pressure is acting on the pipe, and the force to move the header plate 5 while bending the elastic joint 4 when no internal pressure is acting on the pipe. 8 and the flange surface 10 to ensure sealing performance.

Here, if the force required to extend the elastic joint 4 by the stroke Q is Fax, the inner diameter of the packing 8 is dl, the inner diameter of the elastic joint 4 is d2, the output of the cylinder 7 is Fcy, and the number of pipes is n, then the pipe When no internal pressure is acting on the path, the contact force Fp of the gasket 1-8 is expressed by the following equation (1).

F p = Fay Few
-(1) Here, if the minimum required contact force of the gasket 8 is Fpo, then from the above equation (1), the required output P cyo of the cylinder 7 is given by the following equation.

Pcyo=n (Fpo+Fex)
-(2) When the internal pressure p acts on the pipe, a thrust force is generated as the elastic joint 4 tries to expand, so the contact force F'p of the gasket 8 increases as shown in the following equation.

F'p=Fp+ −(d 2”−d 12)
...(3) If the contact force safety factor of the gasket 8 is f, the safety factor is.

Fp f=−dip πdlp. Therefore, from equation (4), the diameter d of the gasket 8
1 and the inner diameter d2 of the elastic joint 4, it is possible to ensure the necessary safety factor f, which is related to the internal pressure of the pipe.

In equation (1), the output Fcy of the pneumatic cylinder 7 is given to obtain the initial contact force, but in the case of 1X, where the air source of the pneumatic cylinder 7 cannot be expected to be reliable, the bracket 2
By arranging the elastic joint 4 and the pusher A 11 between the header plate 5 and the header plate 5 in parallel with the elastic joint 4, as shown by the imaginary line in FIG. can be ensured, improving reliability.

FIG. 3 shows another embodiment of the present invention. In this embodiment, a flexible hose 12 is directly attached to the header plate 5 without providing an elastic joint, and a face seal is formed between the packing 13 and the flange surface 14. It is a combination of conduits and combinations. Such a conduit can be added within an allowable range of the contact force safety factor f.

FIG. 4 specifically shows an application example in which a water supply unit and a pipe attachment/detachment device are combined. When internal pressure acts on the pipe line, the thrust force by the elastic joint 4 acts on the water supply unit 9, so the number of pipes is distributed evenly to the left and right sides of the water supply unit 9, and they are arranged so that the thrust forces cancel each other out within the water supply unit 9. This allows the force for fixing the water supply unit 9 on the base 1 to be minimized.

〔Effect of the invention〕

According to the present invention, since flat sealing is performed using a gasket, connections can be easily made even if there is misalignment, and a large number of pipes can be connected and disconnected at the same time. Since the self-locking effect of the internal pressure of the pipe is utilized, it is possible to connect and disconnect in a short period of time, and the connection can be made without leakage. In addition, by gathering a large number of pipes together on one header plate, it is possible to attach and detach brackets even more quickly, and by providing a push spring, it is possible to ensure automatic and reliable connections. .

[Brief explanation of the drawing]

1 is a partial cross-sectional side view of a piping attachment/detachment device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a partial cross-sectional side view of another embodiment of the present invention, and FIG. FIG. 3 is a partially sectional side view showing an example of application of the invention. 2... Fixed part (bracket), 3... Piping, 4...
Elastic joint, 5...Header plate, 8...Gasket, 10...Supplied side (flange surface), 11...Press spring.

Claims (1)

[Claims] 1. An elastic joint having flexibility in the axial direction is provided on the supply side pipe as a part of the pipe line, a gasket is disposed at the end of the elastic joint, and the diameter of the gasket is set as above. By making the inner diameter smaller than the inner diameter of the elastic joint, and pressing the gasket toward the supplied side using the thrust of the elastic joint generated by the difference in cross-sectional area between the inner diameter and the diameter when internal pressure acts on the pipe line. A piping attachment/detachment device characterized by connecting piping. 2. In the piping attachment/detachment device according to claim 1, the plurality of elastic joints provided on the supply side piping are attached together to one header plate, and each of the piping is connected by the header plate. A piping attachment/detachment device, characterized in that the piping is connected to the supplied side with a flat seal and is configured to attach and detach the piping all at once. 3. In the piping attachment/detachment device according to claim 2, between the header plate and the fixing part on the supply side,
A piping attachment/detachment device characterized in that a push spring is arranged in parallel to the elastic joint.