JPS5929121Y2 - Bladder type accumulator - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an accumulator having an elastic and flexible bare body called a bladder for storing liquid in an airtight tank pre-filled with gas.

Conventional technology and its problems Accumulators are widely used in conventional water supply systems, hot water supply systems, etc. as pressure accumulators or water hammer prevention devices. In the case of a simple system in which water is directly supplied and drained, there is a risk that a portion of the gas will be absorbed or dissolved in the water, causing corrosion of the water supply and drainage equipment, and causing unexpected accidents such as water hammering.

For this reason, many types of devices that prevent direct contact between gas and liquid have been seen in recent years.

However, even with 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. However, cleaning and other maintenance inside the tank, hygiene, etc. are not always sufficient.

Furthermore, there are various drawbacks such as the flow of water during supply and drainage of liquid in the tank is not smooth, and in extreme cases, vibration or noise may be generated.

Purpose and Structure of the Present Invention The purpose of the present invention is to eliminate the various drawbacks of the conventional devices described above, and to provide a bladder-type accumulator that exhibits smooth liquid behavior during supply and discharge, and is easy to maintain and inspect. It is something.

In order to achieve this purpose, the plug-type accumulator of the present invention includes a tank made of a rigid material that is hollow and airtight so that gas can be filled in, a flange that is removably attached to an opening provided in a part of the tank, and an elastic flexible tank. a bowl-shaped retainer installed inside the opening of the bag and fixed to the flange; and a bowl-shaped retainer that penetrates the flange and the retainer and has one end near the bottom of the bag. It is characterized by comprising a liquid supply/discharge pipe facing the liquid supply/discharge system and having the other end communicated with the liquid supply/discharge system.

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 pipe faces near the bottom of the bag, 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) Since a retainer is attached to the inner circumference of the bag opening, an opening for liquid supply and drainage is secured even when the bag is deflated.
Not only can the bag be stabilized, but also the liquid can be reliably supplied and discharged.

(4) Even when liquid enters the bag, the liquid supply and discharge pipe faces near the bottom of the bag, and the compressed air on the outside of the bag acts as a cushion to support the bag. Since it enters relatively quietly and gradually increases along the bag body, the swinging of the bag body is extremely small and the breathing of the bag body is evened out, so the life of the bag band is long.

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

Example The drawing is a sectional view showing an embodiment of the present invention.

In the figure, reference numeral 1 denotes a tank made of a rigid material such as steel, which is formed to be airtight and has an opening 2 at one end, for example, the upper end.

A bag 3 is made of an elastic and flexible material such as rubber, and is detachably attached to the tank through the opening 2. The opening 4 of the bag 3 is connected to the tank 1 through the flange 5. sandwich it in the opening 2 of.

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 bowl-shaped retainer 6 is attached to the inner peripheral surface of the opening 4 of the bag 3 to prevent the opening 4 of the bag 3 from deforming inward.

A supply/discharge pipe 7 is fixedly fixed to the retainer 6 so that its lower end faces near the bottom of the bag body 3, and the upper end of the supply/discharge pipe 7 is communicated with a communication port 8 fixed to the flange 5.

Although it is desirable that the ends of the supply/discharge pipe 7 and the communication port 8 are brought into close contact with each other, a slight space may be provided between them.

The communication port 8 is fluidly connected to a liquid supply/drainage system such as a pump or a hot water supply system.

At the bottom of the tank 1 there is provided an air supply port 9 to be connected to a source of pressurized gas.

The effect of the above configuration will be explained next.

First, when compressed air is previously sealed into the tank 1 through the air supply port 9 until a predetermined pressure is reached, the bag body 3 deforms and contracts until it comes into close contact with the periphery of the supply/discharge pipe 7 .

After reaching a predetermined pressure, the air supply port 9 is shut off.

Next, water is supplied through a communication port 8 that communicates with a water supply system (not shown) such as a pump, and the water enters the bag body 3 from the lower end of the supply/discharge pipe 7.

Accordingly, as the amount of water supplied increases, the bag body 3 expands from its initial flat state to a bottle shape and into the state shown in the figure to accommodate the supplied water.

At the start of water supply, the bag body 3 assumes a flat state, but since a bowl-shaped retainer 6 is attached to the inner periphery of the opening 4, the opening 4 does not become flat. Furthermore, since the water enters the bag 3 from the bottom of the supply/discharge pipe 7, vibrations of the bag 3, which often occur as the water enters, or lateral shaking and abnormal deformation of the bag due to the inertia of the water. Such inconveniences do not occur at all.

Once the predetermined amount of water has been filled, the water supply is shut off.

Next, in order to drain the water stored in the bag body 3, the communication port 8
When the system fluidly connected to is activated, the air pressure in the tank 1 forces the water in the bag 3 into the supply/discharge pipe I and discharges it from the communication port 8.

If the control means is attached to the communication port 8 as described above,
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 supply/discharge pipe 7 faces near the bottom of the bag 3 and the retainer 6 is attached to the inner surface of the opening 4 of the bag 3. The water contained in the bag body 3 can be completely discharged without being blocked at the opening 4.

In addition, when performing maintenance or inspection inside the tank 1 or replacing the bag body 3, the flange 5 can be removed.
The bag body 3 can be easily taken out from the opening 2.

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 can be made of materials other than rubber as long as it has sufficient corrosion resistance against the gas and liquid to be used, and as long as it has elasticity and flexibility.

Furthermore, it is a matter of course that, in addition to steel materials, non-ferrous materials or non-metallic materials can be used for the materials constituting the tank and the like.

Furthermore, the state of engagement between the structural members is determined by the use of a structure in which the retainer opening is sandwiched between flanges, the retainer and the bag are fixed, or the supply/discharge pipe and the flange are fixed. Various modifications are possible depending on the situation and other conditions.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view showing an embodiment of the present invention. 1...Tank, 2...Opening, 3...
... Bag body, 4 ... Opening, 5 ... Flange, 6 ... Retainer, 7 ... Supply and discharge pipe, 8 ...・Communication port, 9...Air supply port.

Claims (1)

[Scope of utility model registration request] A tank made of a rigid material and formed to be hollow and airtight so as to be able to fill with gas; a flange detachably attached to an opening provided in a part of the tank; and a bag made of an elastic and flexible material and provided inside the tank. a bowl-shaped retainer installed inside the opening of the bag body and fixed to the flange; and a bowl-shaped retainer that penetrates the flange and the retainer, with one end facing near the bottom of the bag body and the other end connected to a liquid supply and drainage system. A bladder-type accumulator characterized by having a fluid supply and discharge pipe that communicates with each other.