JPS6118241Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an accumulator that is provided with an elastic and flexible bag called a bladder in which liquid is stored in an airtight tank filled with gas in advance.

Conventional technology and its problems Accumulators are widely used in conventional water supply systems or hot water heating systems as pressure accumulators or water hammer prevention devices, but air or inert gas is sealed in advance into a tank at a constant pressure. After that, in a simple type where water is directly supplied and drained, some of the gas is absorbed or dissolved in the water,
There is a risk of an unexpected accident occurring in the water supply and drainage equipment.
For this reason, in recent years, many types of tanks have been seen in which a flexible diaphragm is fixed to the middle of the tank at its periphery to prevent direct contact with gas and liquid. However, even in this type of system, it is still insufficient in terms of corrosion and contamination of the liquid due to direct contact between the liquid and the inner surface of the tank, and it is also difficult to use water supply and drainage systems, especially those for drinking water. However, cleaning and other maintenance inside the tank, hygiene, etc. are not always sufficient. In addition, there are various drawbacks such as the flow of water during supply and discharge of liquid is not smooth and, in extreme cases, vibration or noise is generated.

Purpose and Structure of the Present Invention The present invention eliminates the various drawbacks of the conventional device described above, and provides smooth liquid behavior during supply and drainage, ease of maintenance and inspection, and prevents swinging and deviation of the bag body. It is an object of the present invention to provide a bladder-type accumulator that can prevent this and keep the bag body in a stable state.

In order to achieve this purpose, the bladder type accumulator of the present invention includes a tank made of a strong material, hollow and airtight so as to be able to fill with gas, and having a narrow opening at the bottom in a cylindrical shape with a vertical height. A flange is removably attached to the opening provided at the lower part, and a narrow part of the cylindrical opening made of an elastic flexible material and having a vertical height and approximately the same shape as the narrow part of the tank is inserted into the tank. A bag body that is properly fitted and joined to the narrow part of the opening of the tank, and has a plurality of holes oriented toward the bag body, and has a vertical height and substantially the same shape as the narrow part of the bag body. a bowl-shaped retainer secured to the flange with a cylindrical side portion snugly fitted into the narrow portion of the opening of the bag body; and at least one suspension device for suspending the upper end of the bag above the upper part of the tank.

Effects of the Invention By having the above structure, the bladder type accumulator of the present invention has the following effects.

(1) Since the liquid supply/discharge port is located at the bottom of the bag and the flow is rectified through the hole in the retainer, the liquid supply/discharge operation is extremely smooth.

(2) In addition, since the liquid supplied from the liquid supply system does not collide directly with the opening of the bag, the shock especially when starting the pump can be reduced, allowing for quiet operation and extending the life of the bag. be able to.

(3) Because a retainer was attached to the inner circumference of the bag opening,
Even when the bag is deflated, an opening for supplying and discharging the liquid can be secured, the bag can be stabilized, and the liquid can be reliably supplied and discharged.

(4) Even when liquid enters the bag, the liquid is rectified through the holes in the retainer, and the compressed air outside the bag acts as a cushion to support the bag, and the upper part of the bag is connected to the tank. Since the bag is connected to the bag, the swinging of the bag is extremely small, the breathing of the bag is evened out, and the life of the bag is long.

(5) Since the bag and other components can be freely removed from the tank opening, maintenance, inspection, and repair are extremely easy, and this not only improves the operation rate of the accumulator but also improves the efficiency of related equipment. The operating rate can also be improved.

Furthermore, the present invention has the following effects due to the special structure of the retainer.

(6) The retainer is made into an inverted cap-like cylindrical shape and is fitted onto the inner surface of the opening of the bag body, which prevents the opening of the bag body from deforming inward, and allows for the supply of liquid.
It is possible to securely hold the opening open for discharge, ensure stability of the bag even when the bag is deflated, and reliably supply and discharge liquid.

(7) Since the retainer is cylindrical and fits neatly into the narrow part of the mouth of the bag, which has almost the same shape, when the bag is deformed, the bag is subject to wear due to particles in the liquid. Moreover, the bag is not damaged by the retainer, and the life of the bag can be increased.

(8) A suspension device is installed to suspend the upper end of the bag from the top of the tank, which prevents the bag from swinging or shifting, making it possible to maintain the bag in a stable state and also to facilitate inspection and maintenance of the bag. etc. becomes easier.

Embodiment FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. In the figure, 1 is a tank made of a strong material such as steel, which is formed to be airtight and has an opening 2 at its lower end. This part of the opening 2 is formed into a cylindrical narrow part with a considerable height. A bag 3 is made of an elastic and flexible material such as rubber, and is detachably attached to the tank 1 through the opening 2. The opening 4 of the bag body 3 has a narrow portion having a considerable height and having approximately the same shape as the narrow portion of the tank,
This narrow part is tightly clamped to the narrow part of the opening 2 of the tank 1 via the flange 5. As the clamping means, bolts and nuts are most commonly used as shown in the figure, but other clamping means may also be used. Next, a cylindrical retainer 6 formed in a bowl shape and having a considerable height is properly fitted and attached to the inner peripheral surface of the narrow part of the opening 4 of the bag 3.
prevent inward deformation. The retainer 6 is provided with a plurality of holes 7 facing the bag body 3, and the flange 5 is provided with a communication port 8 for fluid connection with a liquid supply/discharge system such as a pump or a heating system. At the top of the tank 1 is provided an air supply port 9 to be connected to a source of pressurized gas.

Although not shown in FIG. 1, FIG. 2 shows the upper part of the tank 1 in cross section. That is, an opening 10 is provided in the upper part of the tank 1, a flange 11 is formed, and a lid 13 is detachably attached using a fastener 12 such as a bolt. A connecting member 14 made of a flexible elastic material is attached to the upper part of the bag body 3, and is connected to and suspended from the lid 13 via a hanging member 15 and a bolt 16.

In this example, a lid 13 with a hanging member 15
and the connecting member 14 constitute a suspension device for the bag.

The effect of the above configuration will be explained next. First, compressed air is filled in the tank 1 through the air supply port 9 until a predetermined pressure is reached, and the bag body 3 is opened at the opening 4.
The other parts except the front and back are deformed and contracted until the front and back are in close contact with each other. After reaching a predetermined pressure, the air supply port 9 is shut off, and then a water supply system such as a pump (not shown) is connected.
Water is supplied through a communication port 8 that communicates with the bag body 3, and the water enters the bag body 3 from the communication port 8 through a plurality of holes 7 provided in the retainer 6. Accordingly, as the amount of water supplied increases, the bag body 3 changes from its initial flat state to a bolt-like shape and expands to the state shown in the figure to accommodate the supplied water. At the start of water supply, the bag body 3
However, since a bowl-shaped retainer 6 is attached to the inner periphery of the opening 4, the opening 4 does not become flat, and water is supplied to the bag body 3. Since the water enters from the bottom, there is no problem such as vibration of the bag body 3, which often occurs when water enters. Once the predetermined amount of water has been filled, the water supply is shut off.
Next, in order to discharge the water contained in the bag 3, the system fluidly connected to the communication port 8 is activated, and the air pressure in the tank 1 causes the water in the bag 3 to flow into the retainer 6. It is pushed out and discharged from the communication port 8. During the water supply and drainage, the retainer 6 is provided with a plurality of holes 7 facing the bag body 3, so that the water flow is rectified and no head loss due to turbulence occurs. It also prevents abnormal deformation of the bag body due to polarized head flow. As above,
If a control means is attached to the communication port 8, water within a predetermined pressure range can be supplied and discharged between the water supply source and the water usage system. Even when the water inside the bag 3 is completely drained, the opening 4 of the bag 3 opens downward and the opening 4 of the bag 3
Since the retainer 6 is attached to the inner surface of the bag body 3, the water contained in the bag body 3 can be completely discharged without being blocked at the opening part 4. Further, when performing maintenance or inspection inside the tank 1 or replacing the bag 3, the bag 3 and other constituent members can be easily taken out from the opening 2 of the tank 1 by removing the flange 5.

In addition, in the present invention, as shown in FIG. 2, by connecting the upper part of the bag body to the tank, it is possible to prevent the bag body 3 from swinging, shifting, etc., and to maintain it in a stable state. inspection, maintenance, etc. become easier.

In this embodiment, air and water have been described as the gas and liquid, but it goes without saying that the same effect can be obtained when other gases and liquids are used. Furthermore, although rubber is shown as an example of the bag, it may be made of materials other than rubber as long as it has sufficient corrosion resistance against the gases and liquids used, and as long as it has elasticity and flexibility. can. Furthermore, it is a matter of course that the materials constituting the tank and the like may be non-ferrous or non-metallic materials in addition to steel materials. Furthermore, the state of engagement between the constituent members, such as the structure in which the retainer opening is sandwiched between flanges, the retainer and the bag body, or the retainer and the flange, may be fixed during use. Various modifications are possible depending on the situation and other conditions.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view of the bladder type accumulator of the present invention, and FIG. 2 is a partial cross-sectional view of a portion of the accumulator shown in FIG. 1...Tank, 2...Opening, 3...Bag body, 4...
...Opening, 5...Flange, 6...Retainer, 7
... hole, 8 ... communication port, 9 ... air supply port, 10 ...
Opening, 11... Flange, 12... Fastener, 13
... Lid, 14 ... Connection member, 15 ... Hanging member,
16...Bolt.

Claims (1)

[Claims for Utility Model Registration] 1. A tank made of a strong material, hollow and airtight so as to be able to fill with gas, and having a cylindrical opening with a narrow part at the bottom having a vertical height; A flange removably attached to the opening and a narrow part of the cylindrical opening made of an elastic flexible material and having a vertical height and approximately the same shape as the narrow part of the tank are inserted into the tank. a cylindrical side portion having a plurality of holes oriented toward the bag body and having a vertical height and approximately the same shape as the narrow portion of the bag body; a bowl-shaped retainer that is firmly fitted into the narrow part of the opening of the bag body and fixed to the flange; a communication port provided in the flange so as to face the retainer and communicate with a liquid supply/drainage system; and at least one suspension device for suspending the upper end of the bag above the tank. 2. A lid that is removably attached to the tank and has a hanging member on the lower side for closing an opening provided in the upper part of the tank, and a lid that can be detachably connected to the hanging member and that is attached to the upper part of the bag body. The bladder type accumulator according to claim 1, wherein the suspension device is constituted by a connecting member made of a flexible elastic material.