JP2577911Y2 - Gas sealing work equipment for pressure vessels - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a gas sealing operation device used for sealing a gas inlet of a pressure vessel such as an accumulator for an automobile with a gas plug. The present invention relates to a pressure vessel gas sealing operation device intended to improve the pressure.

[0002]

2. Description of the Related Art In a pressure vessel such as an accumulator for an automobile, a gas filling port opened in a shell which is a container body is sealed with a gas plug after gas is filled. Here, the gas plug is conventionally of a screw type which is screwed into the gas inlet of the shell and fixed, and an O-ring is used in combination to secure the sealing performance (Japanese Utility Model Application No. 63-36).
No. 701).

[0003]

[Problems to be solved by the invention] As described above, conventionally,
Since the gas inlet of the shell is sealed using a screw-in type gas plug and an O-ring, there is a disadvantage in that it is expensive to manufacture the gas plug and to incorporate the O-ring.

Further, screw-in type gas plugs need to be tightened or opened, resulting in poor working efficiency.
The ring had troublesome problems such as the need to control the contact surface roughness.

Moreover, since the screw-in type gas plug can be intentionally opened, it has been necessary to cover the outer periphery with a paint or the like in order to prevent this.

Therefore, the present invention eliminates the need for screwing the gas plug into the gas inlet of the shell and the use of an O-ring, and is a low-cost, highly efficient, and highly efficient gas seal for a pressure vessel. It is an object of the present invention to provide a gas sealing operation device capable of obtaining a stop structure.

[0007]

This invention for achieving the above object SUMMARY OF THE INVENTION, the shell and the gas chamber and o the inside of the shell
A diaphragm which is divided into two chambers,
And a gas filling port communicating between the gas chamber and
The oil inlet that communicates with the oil chamber and the gas seal
With a gas plug inserted into the inlet and sealing it
Welding the gas plug of the pressure vessel to the gas inlet
A pressure vessel gas sealing operation device for
With the filling port facing downward, pull the shell up and down
An upper holding member to be sandwiched and a lower holding member as an electrode;
With the gas plug inserted into the gas inlet,
Employs a means that includes a pressing member that is an electrode for pressing
Things.

[0008]

This invention is based on the adoption of the above means.
With the gas inlet facing downward
Between the holding member and the lower holding member,
Insert a gas plug into the filling port and push it upward with a pushing member.
Press the lower holding member and the pushing member, which are electrodes in this state.
Between the gas plug and the shell
Will be welded to the sealing hole.

[0009]

[0010]

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 2 and FIG. 3 show the overall configuration of a vertical pressure vessel gas sealing operation device 1, in the middle of which an upper holding member 3 for holding the pressure container 2 and a lower holding member 4. And are arranged. Also, a hydraulic cylinder 5 for driving the upper holding member 3 in the vertical direction and a hydraulic cylinder 7 for driving the pushing member 6 described later in the vertical direction are arranged at the upper and lower parts.

FIG. 1 is an enlarged view of the vicinity of the upper holding member 3 and the lower holding member 4. Here, the lower holding member 4 has a thick cylindrical shape having a center hole 4 a and is supported on a support plate 9 via an insulating member 8. Then, on the upper end surface of the lower holding member 4 where the center hole 4a is opened,
Shell 2 at a portion where gas filling port 2a of pressure vessel 2 is opened
A concave curved surface corresponding to the shape b is formed, and a seal ring 10 is mounted around the opening of the center hole 4a.

The lower holding member 4 has a gas supply hole 4b located near the upper end thereof and communicating with a center hole 4a.
And an appropriate gas is supplied from a gas cylinder (not shown) via a hose. Insulating bushes 11 and 12 are attached to the center hole 4a below the opening position of the gas supply hole 4b.

Here, the center hole 4a of the lower holding member 4 is provided.
A push member 6 driven up and down by a hydraulic cylinder 7 is slidably fitted through a seal ring 13 in the insulating bushes 11 and 12 mounted on the boss. The pushing member 6 has a cooling water passage 6 a having a closed upper end formed therein.
Is connected to a cooling water supply hose (not shown). The outer periphery of the upper end portion of such a pushing member 6 is formed slightly thin so as not to obstruct the gas flow from the gas supply hole 4b, and a concave portion 6b for positioning and holding the gas plug 2c is formed on the upper end surface. Have been.

On the other hand, on the insulating member 8, a pushing member 6 is provided.
Is fixed to the support plate 9 with bolts, and, for example, four guide rods 16 are erected on the fixing ring 15. And this guide rod 1
6, a support ring 17 of the pressure vessel 2 is slidably fitted to the upper part so as to be prevented from coming off, and a coil spring 18 elastically holding the support ring 17 upward is wound around each guide rod 16. .

A curved surface corresponding to the shape of the shell 2b of the pressure vessel 2 is formed in the upper portion of the inner peripheral surface of the support ring 17 and the lower portion of the inner peripheral surface of the upper holding member 3, respectively.

Here, the lower holding member 4 and the pushing member 6 are connected to a resistance welding device (not shown) to form their electrodes.

FIG. 4 shows the pressure vessel 2. The interior of the shell 2b is formed by a bladder 2d which is a gas barrier.
e and an oil chamber 2g. Shell 2b
Is connected to the gas charging port 2a communicating the inside and outside of the gas chamber 2e.
And the oil inlet 2f communicating between the inside and outside of the oil chamber 2g
It is provided in a penetrating state. The gas filling port 2a has
A gas plug 2c for sealing this is inserted.
The gas plug 2c has a cylindrical portion fitted into the gas charging port 2a.
And a flange portion which is formed integrally with the cylindrical portion and which comes into contact with the outer periphery of the shell 2b . The screw portion is provided.
Not in. An oil plug is inserted into the oil inlet 2f.
And the center of the oil plug is inside the oil chamber 2g.
A port communicating with the outside is formed. What
In the drawing, reference numeral 2i denotes a fixing portion of the bladder, and 2h denotes a fixing portion of the bladder.
A holder for holding the fixed portion 2i and a poppet 2j
Each is shown.

Next, the operation of the gas sealing working device 1 for a pressure vessel constructed as described above will be described. First, the flange portion of the gas plug 2c is placed on the concave portion 6b formed on the upper end surface of the pushing member 6 and the column portion thereof is directed upward, and the pressure vessel 2 is placed on the support ring 17 with the gas filling port 2a directly below. And put it so that it faces. In this state, the hydraulic cylinder 5 is operated to drive the upper holding member 3 downward to push the pressure vessel 2. Then, the support ring 17 moves downward along the guide rod 16 while opposing the coil spring 18, so that the shell 2 b of the pressure vessel 2 presses against the concave curved surface formed on the upper end surface of the lower holding member 4,
Thus, the shell 2b of the pressure vessel 2 is sandwiched between the upper holding member 3 and the lower holding member 4.

The shell 2b of the pressure vessel 2 is
When held between the lower holding member 4 and the lower holding member 4, the periphery of the center hole 4 a of the lower holding member 4 is sealed by the seal ring 10. Therefore, an appropriate gas is supplied from a gas cylinder (not shown) to the gas supply hole 4b of the lower holding member 4 via a hose, and the gas is supplied from the center hole 4a to the gas chamber 2e of the pressure vessel 2 via the gas filling port 2a. Encapsulate.

After the gas is sealed in the gas chamber 2e of the pressure vessel 2, the hydraulic cylinder 7 is actuated to push the pushing member 6 upward, so that the cylindrical portion of the gas plug 2c is sealed by the gas sealing of the pressure vessel 2. Insert into inlet 2a. In this state, while supplying cooling water into the cooling water passage 6a of the pushing member 6, the gas plug 2
Power is supplied to the pushing member 6 that comes into contact with the brim portion c and the lower holding member 4 that comes into contact with the shell 2b, and the gas plug 2c is resistance-welded to the gas filling port 2a of the shell 2b.

The pressure according to this embodiment configured as described above
In the gas sealing operation device 1 for a power container, the gas plug 2
When the gas sealing port 2a is sealed with c, no screwing work is required, and the use of an O-ring is not required, so that the cost is low and the working efficiency is high.

Further, the gas plug 2c is connected to the gas charging port 2a.
With the gas plug 2c inserted, the gas plug 2c is
Since it is anti-welding, it has extremely high sealing properties,
The thickness of the well 2b can be reduced, and the pressure vessel 2 can be reduced in weight.
Can be. Further, the gas filling port 2a of the shell 2b is lowered.
With the gas plug 2c inserted into the gas charging port 2a.
Molten metal generated during welding because it is to be welded
To prevent dust and welding residue from adhering to the bladder 2d
Bladder 2d is damaged by their heat
Can be prevented.

In the above embodiment, a pair of electrodes is constituted by the pushing member 6 and the lower holding member 4.
Alternatively, the upper holding member 3 that contacts the shell 2b may be configured as one electrode.

[0025]

[Effects of the Invention] As described above, this invention requires a gas charging port.
Hold the shell with the upper holding member and the lower holding
Between the material and the gas plug
And pushed upward by the pushing member,
Apply current between the lower holding member, which is an electrode, and the pushing member.
With this, the gas plug is welded to the gas inlet.
This eliminates the need to screw in gas plugs.
At the same time, the use of an O-ring is not required. Accordingly
Cost and work efficiency
It can also be raised. Also, plug the gas plug
After inserting the gas plug into the gas
Very high sealing performance is obtained because of contact
This means that the shell can be made thinner and the pressure vessel lighter
Will be able to Plus, shell gas
With the gas inlet facing downward, insert a gas plug into the gas
Molten metal that is generated during welding.
Metal and welding debris can be prevented from adhering to the diaphragm.
To prevent the diaphragm from being damaged by those heat
And provide good quality products.
Will be able to.

Here, the gas sealing operation of the pressure vessel does not involve the screwing operation of the gas plug and the use of the O-ring is not required, so that the cost is low and the working efficiency is good.

In the gas sealing structure of the pressure vessel obtained in this way, a gas plug is inserted into the gas inlet of the shell and resistance welded, so that extremely high sealing performance can be obtained. For this reason, it is also possible to reduce the wall pressure of the shell and reduce the weight of the pressure vessel.

[Brief description of the drawings]

FIG. 1 is a diagram showing a main part structure of an embodiment of a gas sealing work apparatus for a pressure vessel according to the present invention.

FIG. 2 is a front view showing the entire structure of one embodiment.

FIG. 3 is a side view showing the entire structure of one embodiment.

FIG. 4 is a half sectional view of a pressure vessel obtained using the apparatus of one embodiment.

[Explanation of symbols]

1 ...... gas sealing operation device of the pressure vessel 2 ...... pressure vessel 2a ...... gas seal port 2b ...... shell 2c ...... gas plug 2d ...... membrane (bladder) 2e ...... gas chamber 2f ...... oil introduction port 2g ... oil chamber 2h ... holder 2i ... bladder fixing part 2j ... poppet 3 ... upper holding member 4 ... lower holding member 4a ... center hole 4b ... gas supply hole 5, 7 ... hydraulic cylinder 6 ... Pushing member 6a Cooling water passage 6b Depression 8 Insulating member 9 Support plate 10, 13 Seal ring 11, 12 Insulating bush 14 Joint 15 Fixing ring 16 ... Guide rod 17 ... Support ring 18 ... Coil spring

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F17C 5/06 F15B 1/08

Claims (1)

(57) [Scope of request for utility model registration] 1. A shell and a gas chamber and an inside of the shell.
A diaphragm which is divided into two chambers,
And a gas filling port communicating between the gas chamber and
The oil inlet that communicates with the oil chamber and the gas seal
With a gas plug inserted into the inlet and sealing it
Welding the gas plug of the pressure vessel to the gas inlet
A pressure vessel gas sealing operation device for
With the filling port facing downward, pull the shell up and down
An upper holding member to be sandwiched and a lower holding member as an electrode;
With the gas plug inserted into the gas inlet,
A gas sealing operation device for a pressure vessel, comprising a pressing member which is an electrode for pressing .