JPS6035561B2 - Welded type accumulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to welded accumulators for use in accumulating, dampening, and the like of pressurized liquids.

Conventionally, the rim parts 49 and 52 of the body parts 45 and 45 are abutted, and the support part 41 in which the mouth of the partition part 43 is joined to the flange 42 is positioned inside this abutting part, and the ear facing parts 45 and 49 are A welded type accumulator in which the support piece 41 is used as a backing metal is disclosed in Figure 3 of the drawing of the Publication of Publication No. 41-2202, in which the support piece 41 of the partition piece 43 is Since the part 49 is deeply penetrated and the flange 44 of the partition piece 42 is joined to its upper end, the volume of the partition part 43 is increased, and when the parts 45 and 49 are welded, the supporting part 41 serves as a back metal and has the effect of protecting the partition piece 43.

However, in this case, the opening of the partition piece 43 is simply glued to the flange 44 at the upper end of the support piece 41.
If the connection between the support piece 41 and the partition piece 43 is weak and high-pressure oil enters between the two, not only will the adhesive peel off and the partition piece 43 will lose its partitioning function, but the support piece will Since it is in close contact with the inner surface of the part 49, when the lug parts 45 and 4 and 9 are welded using this as a backing metal, the heat of welding is transmitted to the partition part 43 through the support part 41, and the partition part There was a problem that thermal deterioration and burnout of the pieces occurred. Therefore, the present invention provides a mounting part of a flange retaining ring that protrudes deeply from the container main body while constricting into the lid body, and firmly grips the bladder flange by narrowing the upper end of the clamping part, to connect the container main body and the lid body. It is an object of the present invention to provide a welded type accumulator that is used as a backing metal for welding and does not cause separation of the bladder flange even when high hydraulic pressure is applied, and does not cause thermal deterioration or burnout of the bladder due to welding heat. Next, an example of the implementation of the accumulator according to the present invention will be described below with reference to the drawings.

In the figure, 1 is the main body of the container, which is made of a suitable metal or the like according to the working pressure, and is formed almost in the shape of a bowl, with a liquid inlet and outlet 2 at the center of the bottom. As shown on the right side of the figure, the frame is slanted inward, and in the case of normal welding, it is finished slanted outward as shown on the left side of the figure. 3
is a bladder retaining ring, which is formed by pressing a thin steel plate, etc.
At its lower part, a mounting part 5 is provided, which is located inside the abutting part between the container main body 1 and a lid described later, and whose lower end is supported by a receiving part 6 provided on the container main body 1. A flange holding part 4 is provided downward, which protrudes deeply into the lid body to be described later as it narrows as it extends upward and approaches the husband surface.

Reference numeral 7 denotes a curved portion whose tip is rounded when the flange holding portion 4 is inserted, so as not to damage the tip when the bladder is bent upward.

Reference numeral 8 denotes a deformable bladder made of natural rubber, synthetic rubber, etc., and a flange 9 which also serves as a packing is provided at the opening of the bladder. The special groove 4 is narrowed from the state shown by the solid line in FIG. 2 to the state shown by the chain line, so that the groove 4 is airtightly and firmly attached to the clamping groove 4.

1. A lid body made of the same material as the container main body 1, usually provided with a gas filling valve 11 in the husband part, and provided with a gas inlet/outlet when used as a transfer barrier, and the lower end butts against the container main body 1. In the case of electron beam welding, it is finished with an outward slope so that it closely fits with the edge green of the container main body 1, and in the case of normal welding, a welding groove is formed between it and the edge green of the main body 1. It is slanted outward.

Reference numeral 12 denotes a valve body attached to the bottom of the bladder 8, which contacts the valve seat 13 to close the liquid inlet/outlet 2 when the bladder 8 expands, and separates from the valve seat 13 to open the liquid inlet/outlet 2 when the bladder 5 contracts. It is something.

Therefore, the flange 9 provided at the entrance of the bladder 8 is inserted into the flange clamping part 4, which is provided so as to protrude deeply as it extends upward into the lid 10 of the bladder retaining ring 3. If a drawing machine or the like is used to draw the drawing from the state shown by the solid line in Figure 2 to the state shown by the chain line in the same figure, the inner wall of the clamping part 4 will bite into the flange 9, making the flange 9 airtight and strong. In this state, the mounting part 5 provided at the lower part of the bladder holding ring 3 is iron-inserted into the closing part of the container main body 1, its lower end is supported by the step part 6, and the lid is placed on the container main body 1. If the body 10 is attached, the lid body 1 and the mounting part 5
At this time, the container body 1 and the lid body 10 are either brought into close contact with each other by electron beam welding as shown in the right half of FIG. If a welding groove is formed as shown in the left half and this part is welded with electricity or gas, the mounting part 5 will act as a backing metal for welding in both cases to make the welding more effective, and the bladder retaining ring will also be welded. 3, this mounting part 5 is adapted to the main body 1 of the container, but the upper part is brimful and the flange holding part 4 is smaller than the lid body 10, so the bladder has a sufficient distance from the mounting part which serves as the back metal for welding. Since the distance is maintained and it is hardly affected by welding heat, a welded type accumulator that has excellent volumetric efficiency and cushioning properties due to the large volume of the prada 8 and does not cause thermal damage to the prada can be easily completed. As described above, the welded type accumulator according to the present invention abuts the edges of the container main body and the lid body, positions the attachment part of the bladder retaining ring that holds the flange of the bladder inside this abutting part, and In a welded type accumulator in which the mounting part and the lid body are welded together using the mounting part as a backing metal, the bladder retaining ring is contracted as it extends above the mounting part and protrudes deeply into the lid body, and the bladder flange is attached to the clamping part at the tip of the bladder retaining ring. Since the bladder is gripped, the volume of the bladder becomes large, close to the volume of the entire container formed by the container main body and the lid, and the volumetric efficiency and buffering performance of the accumulator are significantly improved.

The flange of the bladder was inserted into the bladder holding part provided at the upper end of the bladder holding ring, and the inner wall of the holding part was squeezed to firmly grip the flange, so high hydraulic pressure was applied between the bladder and the holding ring. Also, the flange will not come off.

The mounting part of the Prada retaining ring fits the main body of the container, but it tightens as it extends upward, and the flange holding part at the upper end is separated from the lid body, so the above-mentioned mounting part is used as a backing metal to connect the main body of the container and the lid. When welding the joint with the body, not only the welding flame and welding gas are blocked by the mounting part, but also the prada is sufficiently separated from the mounting part and the welding heat is not transmitted, so the welding flame, welding gas, welding The bladder, which is extremely sensitive to heat, is completely protected from these and will not undergo deterioration or damage.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the accumulator according to the present invention, and FIG. 1 is a longitudinal sectional front view thereof. FIG. 2 is an enlarged sectional view of the main part. In the figure, 1 is a main body of the container, 10 is a lid, 3 is a plug holding ring, 4 is a flange holding part, 5 is a mounting part, 8 is a bladder, and 9 is a flange. Figure 1 Figure 2

Claims (1)

[Claims] 1. On the upper side of the attachment part that is fitted across the joint edge of the main body of the container and the lid, it protrudes deeply into the lid while constricting as it extends upward, and the flange of the bladder is inserted into the upper end to narrow the inner piece. , a bladder retaining ring provided with a clamping portion for firmly gripping the flange is joined to the container main body and the lid by welding the container main body and the lid using the mounting portion as a backing metal. Form accumulator.