JPS5818549B2 - Youki Kouzou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to container structures for use in high temperature freezing and other extreme conditions.

It is well known to connect a container body and a container head using a pin-type connecting device. For example, U.S. Pat. A method is described for linking each other.

Particularly in the nuclear industry, it is still necessary to provide a double seal between the vessel head and the vessel body so that pressure tests can be carried out while the vessel is in use.

Larger sealing rings are used for larger containers (even if the container is placed vertically).
The weight of the container head alone compresses the sealing ring, making it impossible to achieve a sufficient seal while the container is in use.

Of course, if the container is placed horizontally, it will be completely impossible to compress the seal, regardless of the weight of the head.

That is, if the container is placed horizontally or vertically but does not have enough weight to compress the seal, a suitable tightening device is required to compress the seal.

A further problem with pin-type connecting containers is that the radially arranged pins move radially outward due to relative movement between the container connecting rings holding them.

The present invention provides a dowel pin-type coupling device for coupling a container head to a container body, in particular to maintain the position of the coupling pin in a predetermined inserted state during periodic temperature or pressure fluctuations, or to immediately The present invention provides a container connecting device that returns to a predetermined insertion position and serves to compress and hold an annular seal ring disposed between the container body and the container head.

That is, according to an embodiment of the invention, the first container part is provided with an annular end, the annular end is provided with two coaxial connecting rings and an annular groove is formed between them, and the second container part is provided with an annular end. The section is also provided with an annular end, a connecting ring projecting from the annular end is configured to be insertable into the annular groove of the first container section, and further includes an annular end of the first container section and a second container section. A sealing device is provided between the ends and sealing therebetween.

Each of the connecting rings of the first container part and the second container part has a set of holes arranged at regular intervals in the circumferential direction,
One connecting pin is inserted into each set of holes.

Furthermore, each connecting pin is held at a predetermined insertion position in the hole described above, and even if the connecting ring moves relative to each other and the pin moves from the predetermined position, it will be held at the predetermined insertion position. A pin retainer is provided for return.

Furthermore, a compression device forming part of the container portion is provided,
This keeps the sealing ring compressed and completely seals the connection between the first container part and the second container part.

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

In the drawings, the letter V indicates the entire vessel, which may be oriented horizontally or vertically and is used under high temperature and pressure conditions or other extreme conditions.

The container V includes a container head 10 and a container body 1 on which it is placed.
1, and both are connected by a connecting device 12 (FIGS. 2 and 3) or 14 (FIGS. 4 and 5).

The container body 11 includes an annular end 11a, and the annular end 11a
is connected to the main portion of the container body (not shown) by welding or other methods.

The annular end 11a has two coaxial rings 15 and 16, which are arranged radially apart from each other and define an annular groove 17.

It should be noted that the coupling rings 15 and 16 in this embodiment are formed integrally with the container body end 11a by cutting or other methods. The rim 18 is provided with two coaxial annular grooves 18a and 18b formed by cutting, both of which are arranged radially apart from each other and are provided with annular sealing rings or gaskets 19a and 19, respectively.
Accommodates b.

The container head 10 has an annular end 10a;
is provided with one coaxial ring 20 which can be inserted into the annular groove 11 between the body rings 15 and 16.

The annular end 10a further comprises an inwardly projecting rim 21 which engages on the body inwardly projecting rim 18 and is sealed by seal rings 19aTh and 19b.

Note that the seal rings 19a and 19b are made of a suitable rubber or polymer or some kind of metal.
These are already well known in the art.

In the nuclear industry, sealing rings 19a and 19
By providing double seals at positions separated from each other in the radial direction as shown in FIG.
It is necessary to enable communication with the annular space between the two.

The passage 22 is used to test the sealing effectiveness of the seal rings 19a and 19b while the container V is in use.

In addition, in order to fully obtain the sealing effect of the seal rings 19a and 19b, they are compressed by the inner annular rim surface 21a so that a sufficient sealing effect can be maintained even if the inside of the container V is pressurized. Must be configured.

The container V of the present invention is particularly designed to be used in high temperature and high pressure conditions. When used in such conditions, the entire container including the container body 11 and the container head 10 is exposed to cyclical temperatures and ( or) move relative to each other under the influence of pressure fluctuations, resulting in head rings 20
Relative radial movement often occurs between the body rings 15 and 16.

Therefore, the thickness of the head connecting ring 20 is usually the same as that of the main body 11.
The width of the annular groove 1γ is appropriately adjusted to provide an annular gap as shown in 15a so as not to impede such radial expansion or contraction.

Next, the connecting device 12 shown in FIGS. 2 and 3 will be explained. The connecting device 12 includes main body rings 15 and 16.
The head ring 20 is provided with a number of holes 25 arranged at regular intervals in the circumferential direction, and each set of holes has a connecting pin 2.
6 is inserted.

That is, the holes 25 provided in the main body rings 15 and 16 and the head ring 20 are arranged approximately on the same line in the radial direction at predetermined positions in the circumferential direction, details of which are as follows. The figure shows one set of holes 2
5 and a pin 26 inserted therein, all the connecting devices arranged at regular intervals in the circumferential direction have the same configuration.

As shown in FIGS. 2 and 3, the outer body ring 16 has a hole 16a which is coaxial with the groove 15b of the inner body ring 15, and the head ring 20 also has a hole 20a. .

When the container head 10 is first placed on the container body 11, the head ring 20 is inserted into the annular groove 17, and the annular rim lower surface 21a engages with the heads of the seal rings 19a and 19b.

Note that even when the container is placed vertically as shown in FIG. 1, the weight of the container head 10 is usually insufficient to sufficiently compress the seal rings 19a and 19b.

Then, insert the pin 26 and at the same time insert the head ring hole 20a.
by moving the seal rings 19ab and 1 to a completely coaxial state with the main body ring holes 16a and 15b.
9b to a predetermined state.

In other words, when the container head 10 is simply placed on the main body 11, the head ring 20 is in an incomplete insertion position.
The head ring hole 20a is located above the ring holes 16ak and 15b of the main body 11, that is, at a position slightly off the center axis, but when the container head 10 is pushed down by an external force, the seal rings 19a and 19b are compressed, and at the same time the head The ring hole 20a moves on the same axis as the ring holes 16a and 15a of the main body 11.

In this way, the inner annular rim surface 21a allows the seal ring 1
9a.

19b is compressed, and after the holes are completely lined up on the same axis, the pin 26 is inserted into the hole under pressure.

The coupling device 12 is thus able to compress the sealing rings 19a and 19b and maintain a perfect seal.

The main body ring hole 16a is provided with a protrusion 16b extending in the radial direction, and the protrusion 16b is arranged on the same axis as the protrusion 15c which also extends in the radial direction within the circular large size or groove 15b. A similar protrusion 20b is provided inside 20a, and the hole 20a is connected to the hole 16'a and 1
When the pin 26 is moved to the coaxial state with the pin 5a and the pin 26 can be inserted, the protrusion 20b is aligned with the protrusions 16b and 15c.
It is configured to be in a coaxial state with.

Further, the pin 26 is provided with a groove 26a extending in the axial direction,
Groove 26a engages projections 16b, 20b and 15c to hold pin 26 from rotation in the inserted position shown in FIG.

The pin 26 has a hole 26b along the longitudinal axis, a large widened portion 26c is provided at the outer end of the hole 26b, a nut 26d is disposed within the widened portion 26c, and a set screw 26e is disposed within the widened portion 26c.
’ is fixed.

The purpose of providing the shaft hole 26b also includes venting gas when inserting the pin into the coaxial holes 16a t 20ak and 15b.

Next, a description will be given of the retaining device, generally indicated by the reference numeral 30. The retaining device 30 is disposed on the outer annular wall 16d of the main body connecting ring 16 so as to overlie each connecting pin 26, and the retaining device 30 is arranged so as to overlap each connecting pin 26. In addition to inserting and holding the pin to the insertion position shown in Figure 2, it is also used to remove the pin from the insertion position.
The absorbent serves to prevent the pin 26 from moving relative to each other in the radial direction after being inserted into 0a:Th and 15b.

The holding device 30 comprises a bracket or support member 31;
The bracket 31 supports a stop shaft 32 that is screwed into the pin 26.

The bracket 31 includes a base plate 31a, and the base plate 31a is fixed onto the hole 16a of the main body ring 16 by a spring 31b.

The base plate 31a still has a circular hole 31c, and the hole 31c is arranged on the same axis as the ring hole 16a.

The base plate 31a further has a protrusion 31b, which is arranged on the same axis as the protrusion 16b of the outer ring 16.

On both sides of the base plate 31a are side plates 31e and 3 that extend outward.
1f, and both are connected to the outer bracket member or end plate 31g by a suitable method such as welding.

The end plate 31g has a hole 31 that rotatably supports the stop shaft 32.
h, and the stop shaft portion 32c in the hole 31h is held by holding washers 32ab and 32b so as not to come off, and in this state the stop shaft 32 is rotatable relative to the end plate.

The outer end 32d of the stop shaft 32 has a hexagonal outer shape, and can be engaged with a suitable tool such as an air wrench.

Moreover, the inner end 32e of the stop shaft 32 has a thread, and is screwed into the threaded hole 26f of the nut.

When using the container V with the connecting device 12, first the container V is placed in the desired horizontal position or vertical position as shown, and then the head 10 is placed on the main body 11 and the head ring 20 is connected to the main body ring 15 and 16 into the annular groove 1γ.

In this state, the hole 20a in the head ring 20 is not completely coaxial with the holes 16ak and 15b in the body rings 16 and 15.

This is because the two seal rings 19a and 19b do not deform due to their own resistance force.

Therefore, in order to move the ring holes 20a of each set 25 on the same axis as the ring holes 16a and 15b, some external force is applied to the head 10, and the head 10 is moved against the buffer resistance of the seal rings 19aTh and 19b. It is necessary to press the ring inwards, ie, such an outward action causes the head ring hole 20a to move coaxially with the ring holes 16a and 15b, and the sealing rings 19ak and 19b to be compressed.

In this state, the pin 26a is completely inserted to the position shown in FIG.

In this embodiment, a holding device 30 is used to coaxially insert the pin 26 into the hole.

First, the pin 26 is engaged with the threaded portion 32e of the stop shaft 30, and the pin 26 is inserted into the outer body ring hole 6a.

Next, a tool such as an air wrench is engaged with the outer end 32d of the stop shaft to rotate the stop shaft in a predetermined direction, thereby moving the pin 26 inward and passing through the head ring hole 20a into the inner body ring hole. 15b, and engage the pin 26 with the entire set.

Similarly, to remove the pin 26, use an air wrench or other suitable tool to rotate the stop shaft 32 in the opposite direction and insert the pin 26 into the head ring hole.

20a, and insert the pin 26 into the main body ring hole 16a.
It is in a state where it is engaged only.

When all the pins 26 of the connecting devices 12 are pulled out to this state, the container head can be removed.

If you still want to assemble the head 10 and main body 11 again, you can repeat the above procedure using the holding device 30.

The container V may also be subject to periodic temperature or pressure changes that may result in relative radial movement between the body rings 1.5 and 16 and the head ring 20.

When there is such a relative movement between the main body ring 15 and the head ring 20, the connecting pin is pushed outward from the fully inserted position shown in FIG. acts to absorb the outward movement or ratcheting effect of

That is, the stop shaft 32 moves outward together with the pin 26 to bend the end plate 31g of the bracket 31 outward, thereby absorbing the displacement of the pin in the radial direction.

When the force pushing the pin 26 outward is released, the elasticity of the bracket 310 causes the bracket 31 and the stop shaft 32 to
forces pin 26 radially inwardly, returning it to the fully inserted condition of FIG.

In some cases, the head ring 20 such as the main body ring 15
The pressing force acting on the pin 26 due to the relative movement between the It seems like it works to hold it in the inserted position.

In each case, the pin 26 is held in the fully inserted position or returned to its fully inserted position by the retaining device 30, so that the pin 26 will never be dislodged from its predetermined position within the coupling rings 16, 20 and 15. do not have.

Next, the coupling device 35 shown in FIGS. 4 and 5 will be explained. The coupling device 35 can be used without using an external device to seal the ring 19a:! =p and 19b, and the basic parts of the container head 10, container body 11, and holding device 310 are represented by the same reference numeral and the same letter. The structure is almost the same.

Therefore, the container V and the connecting device 14 of FIGS. 4 and 5
In the figure, only new members and members different from those in the previous embodiment are indicated by different symbols.

That is, the connecting rings 15 and 16 of the main body 11 and the connecting ring 20 of the head 10 have a set of holes 36 arranged at regular intervals in the circumferential direction, and FIGS. 4 and 5 show one set of holes 36. The details are shown below.

The outer main body ring 16 has a tapered hole 37a that becomes smaller in diameter radially inward, and the inner main body ring 15 has a tapered cut hole 37a that becomes smaller in diameter radially inward, and a similar cut groove 3γb. There is.

The hole 37b of the inner main body ring 15 has the same center line 3B as the hole 37a of the outer main body ring 16, so that both are completely on the same axis, and a taper pin 39 whose diameter becomes smaller toward the inside can be inserted. .

The head ring 20 also has a tapered hole 37c that becomes smaller in diameter inward in the radial direction, and the tapered hole 37c forms a set of coaxial holes together with the main ring holes 3γa i- and 37b, into which the pin 39 can be inserted. .

However, initially, the hole 37c of the head ring 20 is incompletely coaxial with the main ring holes 37a and 37d.

That is, when the head 10 is placed on the main body 11, the inner rim surface 21a of the annular end 10a of the head 10 engages on the seal rings 19a and 19b as described above, but this does not result in compressive deformation of the seal rings 19a and 19b. .

Therefore, in this state, seal rings 19a and 1
Since 9b is not deformed at all or deformed insufficiently, the centerline 40 of the head ring hole 37c is located slightly above the centerline 38 of the main body ring holes 37a and 37b.

FIG. 4 shows the pin 39 partially inserted into the set of holes 36.

Note that the shaft hole 40a provided in the pin 39 is provided for purposes such as gas venting, and the threaded end portion 39b can engage the threaded portion 32e of the stop shaft 32.

A retaining device 31 for moving the pin 39 from the initial incompletely inserted position shown in FIG. 4 to the fully inserted position shown in FIG.
Use.

That is, it is sufficient to rotate the stop shaft 32 supported by the bracket 31.

The stop shaft 32e rotates to move the pin 39 inward in the radial direction, and also serves to lower the head ring 20 deeper into the annular groove 17 by the cam action of the gate between the taper pin 39 and the taper hole 37c. do.

In this way, the tapered pin 39 is completely inserted into the inner main ring hole 37b while lowering the head ring 20.

When the pin reaches the fully inserted state, the head ring hole 37c
and the main body ring holes 37a and 37b are arranged completely on the same axis, the annular end 10a of the head 10 is lowered to a predetermined position, and the sealing rings 19a and 19b are sufficiently compressed by the inner rim surface 21a. deformed and thus able to achieve the required seal during use of the container.

That is, the pin 39 cooperates with the holding device 31 to compress the seal rings 19a:Th and 19b without requiring external force.

In other words, the tapered pin 39 whose diameter decreases radially inward acts as a wedge against the head ring hole 37c, lowering the head ring 20 into the groove 17 and simultaneously lowering the seal ring 19a. Compress and tighten 19b and 19b.

When the fully inserted state shown in FIG. 5 is reached, the head ring hole 37
The center line of c is the same as the center line 38 of the main body ring holes 37a and 37b, and at the same time, the center axis or center line of the pin 39 is coincident with the center line 38 of the ring holes.

It should be noted that the above description is merely a detailed description of the present invention, and various changes may be made in shape, size, materials, and detailed construction without departing from the scope of the invention.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of a container using a pin-type connecting device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the container connecting device of FIG. 1, and FIG. 3 is a pin-type connecting device of the present invention. A cross-sectional view taken along the line 2-2 in FIG. 2 showing the holding bracket and bracket of the device, and FIG. FIG. 5 is a cross-sectional view showing an i-joint in an incomplete coaxial state, and FIG. 5 shows the embodiment of the container connecting device shown in FIG. FIG. 3 is a cross-sectional view showing a compressed state. Explanation of symbols of main parts, ■... Container, 10... Container head, 11... Container body, 12... Connecting device, 15
゜16... Body connection ring, -17... Annular groove, 2
0...Head connection ring, 19a, 19b...Seal ring, 16a, 15b, 20a・''Connection ring hole, 2
6... Connecting pin, 30... Holding device, 32... Stop shaft, 31... Bracket

Claims (1)

Claims: 1. A first container part having an annular end provided with two connecting rings coaxially spaced apart and defining an annular groove therebetween; a second container part having an annular end including a coupling ring insertable into an annular groove of the container part, disposed between said first container part and said second container part to seal therebetween; a container sealing device; connecting pins formed in the connecting rings of the first container part and the second container part at regular intervals in the circumferential direction, and one connecting pin inserted into each hole; the first container part; and a bendable outer bracket member spaced apart from the connecting pin, a bracket mounted on the first container portion and radially outward of the connecting pin, and a bracket provided on the connecting pin. and a retaining shaft that is rotatably attached to the outer bracket member with respect to the bracket and extends and that is screwed into the screw hole of the connecting pin; Even if the connecting pin is installed at a predetermined insertion position in the hole formed in the connecting ring, and the connecting ring is relatively moved in the radial direction due to changes in temperature or pressure, the connecting pin can be inserted into the predetermined position. a pin holding device for holding the container in the inserted position.