JPH0137252Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing lid holding device that allows the lid to be opened and closed quickly and easily and that reduces the moment applied to the pin.

A conventional lid holding device for sealing a pressure vessel such as a high-temperature, high-pressure heat exchanger is shown in FIG.

In FIG. 1, a disc-shaped thin film plate c is attached to the inner circumferential step on one end side of the body a through a ring-shaped gasket b, and the gasket b is connected to the thin film plate c.
A flat lid e having a step is fitted into the hollow part of the gasket retaining ring d so as to press the thin film plate c, and the inner periphery of one end of the body a A fixing ring f is screwed onto the female threaded part screwed into the flat cover e so as to hold down the flat cover e, and a gasket tightening bolt g is threaded into the female threaded part screwed into the fixing ring f.
are screwed together, and the gasket tightening bolt g
The tip of the gasket presser ring d contacts the gasket presser ring d, and presses the gasket b via the thin film plate c.

When inspecting the inside of the above heat exchanger, remove the gasket tightening bolt g and then rotate the fixing ring f with a special jig.
Then, remove the flat cover e, gasket holding ring d, thin film plate c, and gasket b.
Since it is necessary to temporarily install a special jig to rotate the fixing ring f, the work becomes complicated and time-consuming. Also, if dust or the like gets on the threads of the barrel a and the fixing ring f, there is a risk that the threads will be damaged and the fixing ring f will not be able to rotate, so be very careful not to get any dirt on the threads. This makes the work difficult. Furthermore, when pressure is applied internally during use and the gasket retaining ring d is pressed by the gasket tightening bolt g, a moment acts on the threaded portions of the barrel a and the fixing ring f, deforming them, and causing the screws of the fixing ring f to operate. There is a risk of interference or burn-in.

The present invention eliminates the drawbacks of the above-mentioned conventional means, and provides a sealing lid holding device for pressure vessels, etc., which has a simple structure and allows quick opening and closing of the sealing lid, and reduces the moment applied to the pin. This was done with the purpose of providing.

Hereinafter, an embodiment of the present invention will be described based on FIG. 2.

A container 4 formed by integrally fixing a tube plate 2 and a shell 3 to one end of the shell 1 is detachably attached via a gasket 5. A large number of tubes 6 are inserted into the tube plate 2 into the shell 1, and the shell 3 is provided with a fluid inlet nozzle 7 and a fluid outlet nozzle 8.

A stepped portion is provided on the inner periphery of the body 3, and a disc-shaped thin film plate 10 is disposed on the stepped portion via a ring-shaped gasket 9 to prevent fluid from leaking to the outside. A gasket holding ring 11 for holding down the gasket 9 is attached to the periphery of the gasket. Next, a stepped flat cover 12 is provided, one end of which is fitted into the hollow portion of the gasket holding ring 11 to hold the thin film plate 10. The maximum outer diameter of the flat lid 12 is slightly smaller than the inner diameter of the barrel 3, similar to the gasket retaining ring 11.

A fixing ring 13 is fitted between the inner periphery of the barrel 3 and the outer periphery of the small diameter portion of the stepped flat lid 12.
3 is brought into contact with the protrusion 12a of the large diameter portion of the flat lid 12. The fixing ring 13 is provided with a plurality of female threads, and the gasket tightening bolts 1 are inserted into the female threads.
4, the gasket tightening bolt 14 is inserted into the through hole 12b provided in the flat lid 12, and the tip of the gasket tightening ring 14 is brought into contact with the gasket holding ring 11. A through hole 3a extending radially to the body 3 is formed at a required position in the body 3, and a hole 13a is also formed in the fixing ring 13 so as to be coaxial with the through hole 3a. 3a and the hole 13a to fix the fixing ring 13.

With the above configuration, when inspecting the inside of the container 4, after removing the gasket tightening bolt 14, use a suitable jig provided to tighten the pin 15.
After removing the fixing ring 13, remove the flat cover 12, gasket retaining ring 11, and thin film plate 1.
0. After removing the gaskets 9 one after another, inspect the inside. Since the fixation using the pin 15 is simpler than the screw structure shown in FIG. 1, it can be opened and inspected easily, and it is also easy to dispose of dust etc. if it is attached. Automation is also possible as attachment and detachment can be done quickly using the provided jig. Furthermore, the pressure inside the container 4 is mostly controlled by the thin film plate 10 and the flat lid 1.
2. Since the moment is transmitted to the fixing ring 13 via the protrusion 12a, the moment applied to the pin 15 is reduced.
Therefore, the pin diameter can be small and the body length can be shortened.

In addition, in the embodiment of the present invention, the case where the sealing lid holding device is applied to the water chamber of a heat exchanger has been described, but the present invention can be applied not only to heat exchangers but also to various containers. Of course, various other changes may be made without departing from the gist of the present invention.

According to the sealing lid holding device for pressure vessels, etc. of the present invention, it is possible to open and close the sealing lid easily and quickly, so the time when the container is not used is shortened, productivity is improved, and the pin Since such a moment is reduced, the body length required for the lid can be shortened, and furthermore, the structure is simple and manufacturing is easy, and various other excellent effects can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional lid pressing device for sealing a pressure vessel, etc., and FIG. 2 is an explanatory diagram of a lid pressing device for sealing a pressure vessel, etc. according to the present invention. In the figure, 1 is the body, 2 is the tube plate, 3 is the body, 4 is the container, 5
is a gasket, 9 is a gasket, 10 is a thin film plate,
11 is a gasket holding ring, 12 is a flat lid, 12
13 is a fixing ring, 14 is a gasket tightening bolt, and 15 is a pin.

Claims (1)

[Scope of utility model registration request] A gasket provided on the stepped portion of the inner circumference of the container, a thin plate for sealing the fluid in the container by pressing the gasket, and a retaining ring that presses around the thin plate, the outer circumference of which is slightly smaller than the inner circumference of the body. a lid that presses down the thin plate and has a protrusion facing toward the container opening on its outer periphery; a fixing ring that comes into contact with the protrusion and presses the lid; For sealing a pressure vessel, etc., comprising a plurality of abutting gasket tightening bolts and a plurality of removable pins whose axes extend in a radial direction, pass through the body, and whose tips engage with the fixing ring. Lid holding device.