JPS5910600Y2 - Anti-vibration tank - Google Patents

Description

[Detailed description of the invention] The present invention relates to a new vibration-proof tank, and more specifically, it is an effective vibration-proof tank that can be used to stabilize the pointers of fluid pressure gauges, flow meters, etc. when they are difficult to read due to vibration. It provides:

Generally, gaseous substances are used as pressurizing means, transport aids, etc., and liquid substances are often kept in constant flow.

As means for detecting the pressure and flow rate of these fluids, instruments such as pressure gauges and flow meters are installed directly or indirectly (bypass) connected to the supply and discharge pipes.

However, depending on where the pressure gauge and flow meter are installed, they are often accompanied by vibrations caused by nearby motors such as pumps, and these vibrations are transmitted to the fluid flowing in the supply and discharge pipes, causing fluid pulsation and waving phenomena.

Additionally, fluid pulsations and undulations result in vibrating pressure gauge and flowmeter pointers.

In this case, not only is it difficult to read the pointer of the meter, making detection uncertain, but it can also cause problems with the meter.

Therefore, when installing pressure gauges and flow meters in places where vibrations occur as described above, it is common to connect them through a vibration-proof tank.

The vibration-proof tanks that have been used in the past have been developed for chemical resistance, and generally a Teflon sheet is provided inside a hollow sealed container, and two chambers are constructed through the Teflon sheet. The fluid is passed through one fluid introduction chamber, and the pressure transmission oil whose volume changes little due to pressure is sealed in the other chamber connected to the pressure gauge, and the Teflon seal is sealed as the fluid pressure changes. In this method, the pressure in the chamber to which the meter is connected is displayed on the pointer of the pressure gauge by minute movements of the meter.

However, the anti-vibration tank produced by the above method was not originally developed as an anti-vibration tank, but was intended for chemical resistance.

Therefore, since the inside of the tank is coated with Teflon or glass, it is expensive.

Not only that, but if the sheet that partitions the inside of the tank deteriorates and pinholes occur, the indication of the instrument pointer will become uncertain, so it will be necessary to replace the vibration-proof tank itself or replace the sheet, which will make it difficult to maintain sufficient durability. There were flaws that I can't say.

The present invention was developed as a result of studies to compensate for the deficiencies in the above-mentioned anti-vibration tanks, and surprisingly, by using perforated plates instead of sheets as partition plates, anti-vibration tanks can be manufactured at low cost and have good durability. In addition, we confirmed the advantages of being able to display and detect accurate instrument pointers, and the new anti-vibration tank of the present invention was fully utilized.

That is, in the present invention, a perforated plate is provided inside a hollow sealed container, and the perforated plate is used to divide the chamber into a fluid introduction chamber and a fluid pressure conduction chamber, and a fluid introduction port is provided in the fluid introduction chamber and a fluid pressure conduction port is provided in the fluid pressure transfer chamber. When used for fluid detection, the fluid introduction chamber and the fluid pressure transmission chamber are maintained in the same phase through the perforated plate, and the above-mentioned advantages are exhibited.

When the viscosity of the liquid is low, fluid pulsation can be sufficiently absorbed by simply introducing the fluid from the fluid inlet without providing a porous plate.

However, when the viscosity of the fluid is high, it is not enough to simply introduce the fluid through the fluid inlet, and the fluid must also pass through holes provided in the perforated plate.

The diameter of the holes in the perforated plate is preferably 0.1 to 0.1, as described below.
It is about 10 mm.

Therefore, the amount of pulsating fluid that can pass through the perforated plate at a time is limited, and the perforated plate functions to suppress the flow rate of the fluid.

As a result, the amount of fluid passing through the perforated plate is constant, and even though the pulsating fluid passes through the perforated plate, it becomes a fluid with no pulsation and a uniform flow.

The fluid that can be detected using the vibration-proof tank of the present invention may be either liquid or gaseous and is not particularly limited.

However, since liquid materials generally have excellent vibration absorption ability, it is necessary to provide a perforated plate except in special cases, i.e., when the viscosity of the fluid is high and the fluid pulsations cannot be absorbed by the fluid inlet alone. There is no gender.

Therefore, the present invention is most effectively utilized when the fluid is gaseous.

Of course, even when the fluid is a liquid substance, the effect is smaller than that of a gaseous substance, but it is more effective than one without a perforated plate.

The vibration-proof tank of the present invention is not particularly limited as long as the inside of the hollow container is sealed and there is no leakage of fluid.

The material of the container is not limited and any known material can be used, and metals such as iron, nickel, chromium, titanium, etc., or alloys thereof are generally most preferably used.

Further, depending on the field of use of the anti-vibration tank, resins such as polyacrylonitrile, polyolefin, fiber-reinforced resins (FRP), etc. can be used as necessary.

The shape of the container can also be selected as appropriate depending on the field of use; for example, known shapes such as a spherical shape, a box shape, a cylindrical shape, etc. may be adopted.

In the present invention, the perforated plate provided inside the hollow sealed container may be made of the same material as the container described above or a different material, but it must be able to withstand fluid pressure.

This is because when the pulsating fluid passes through the perforated plate, only a small amount of fluid can pass through at a time, and the pressure exerted by the fluid that cannot pass is exerted on the perforated plate.

Examples of materials for the perforated plate include neoprene, ethylene/
Rubbery substances such as vinyl acetate copolymers and vinyl chloride resins are suitable depending on the usage.

In addition, the hole diameter of the perforated plate may be small as long as it allows the fluid to pass through without creating a pressure difference between the fluid introduction chamber and the fluid pressure transmission chamber; if the hole diameter is too large, pulsation may occur. Since the fluid can pass through the perforated plate at once, the perforated plate may not restrict the flow of the fluid at all. This is not preferable because it may be transmitted to the fluid pressure conduction chamber.

Therefore, the hole diameter of the perforated plate varies depending on the position where the hole is provided, the size of the intermediate sealed container, the type of fluid, the flow of the fluid introduced from the fluid inlet, etc., and cannot be determined unconditionally, but generally the diameter is 0.1 Holes of the order of ~10 mm are most preferably utilized.

Moreover, the thickness of the perforated plate is not limited at all as long as it is the thickness of a plate-like body included in the concept of a normal plate.

Furthermore, although this differs depending on whether the material of the perforated plate is hard or soft, generally the perforated plate does not bend.

Any method can be used to install the perforated plate as long as the hollow container can be kept sealed. Generally, if the material is metal, the fluid introduction chamber, fluid pressure conduction chamber, and perforated plate are made separately and welded. or by using a suitable adhesive.
Methods such as attaching the material to a body or fastening it with bolts/nuts through packing are employed.

In addition, when the material is a composite or resin, melt bonding, bonding with an adhesive, etc. are suitable.

Furthermore, when the container is made of a metal material and the perforated plate is made of a rubber material, a composite material, a resin material, etc., a method of integrating them by tightening them directly or through a packing material using a bolt/nut method is adopted.

The material and structure of the fluid introduction port and fluid pressure transmission port in the vibration-proof tank of the present invention are not particularly limited, and known materials can be used as they are.

The shape of the fluid introduction port may be such that the fluid introduction port faces the perforated plate, and the fluid introduced into the fluid introduction chamber may directly reach the perforated plate.

However, it is generally preferable for the fluid introduction port to have a direction so that the fluid introduced into the fluid introduction chamber does not directly reach the perforated plate, and the fluid is introduced so that the fluid is introduced into the fluid introduction chamber as parallel to the perforated plate as possible. Preferably, a mouth is provided.

Although the shape of the fluid pressure transmission port has less yaw restrictions than the fluid introduction port, it is most preferable to provide the fluid pressure transmission port so as to be substantially parallel to the perforated plate like the fluid introduction port.

If the fluid is corrosive, measures must be taken to prevent the fluid from reaching the instrument directly.

In order to specifically explain the present invention, the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited to these accompanying drawings.

FIG. 1 is a typical explanatory diagram for installing the vibration-proof tank of the present invention.

Fluid is introduced into the vibration-proof tank 3 of the present invention from the vibrating piping 1 through the fluid introduction nozzle 4 via the flexible hose 2 in a bypass path as required.

The anti-vibration tank 3 of the present invention has one end fixed to a non-vibration point 5, and is connected to a meter 7, such as a pressure gauge, through a fluid pressure conducting nozzle 6.

FIG. 2 is a longitudinal cross-sectional view of a typical cylindrical anti-vibration tank of the present invention.

Moreover, FIG. 3 is a sectional view showing typical shapes of the fluid introduction port and the fluid pressure transmission port.

For the fluid introduced into the fluid introduction chamber through the fluid introduction nozzle 4 shown in FIG. 1, it is preferable to direct the fluid introduction port 8 shown in FIG. 3 toward the side wall side, for example.

The fluid introduced into the fluid introduction chamber 9 from such a fluid introduction port 8 is guided toward the side wall and is not directly supplied to the perforated plate 10.

When the perforated plate 10 is made of a rubber material, for example, it can be easily sealed by tightening bolts 11 as shown in FIG.

The fluid introduced into the fluid introduction chamber 9 is guided to the fluid pressure transmission chamber 13 through the holes 12 of the porous plate 10.

The perforated plate serves to eliminate pulsations and undulations of the fluid, and also serves to uniformly supply the fluid.

Therefore, the fluid supplied to the fluid pressure transmission chamber 13 becomes a uniform flow and operates the pointer of the meter 7 through the fluid pressure transmission port 14.

As is clear from the above description, the present invention allows vibrations to be absorbed by simple means and the pointer of a meter to be reliably read.

The accuracy is approximately 10 times higher than pointer detection using a vibrating tank without any treatment, and there is less damage to the mechanical structure of the instrument due to fluid pulsation or waving.
The durability will also be increased by more than 4 times.

It is also cheaper than conventional anti-vibration tanks.

Moreover, it is not necessary to consider pinholes caused by sheet deterioration as strictly as with conventional vibration-proof tanks, so durability is improved.

[Brief explanation of the drawing]

Figure 1 is a typical explanatory diagram when installing the present invention.
Figure 2 is a longitudinal cross-sectional view of a typical vibration isolation tank of the present invention.
FIG. 3 is a sectional view showing a typical shape of the fluid introduction port or the fluid pressure transmission port. 1... Vibration piping, 2... Flexible hose, 3...
... Vibration-proof tank, 4... Fluid introduction nozzle, 5... Non-vibration point, 6... Fluid pressure conduction nozzle, 7... Instrument,
8...Fluid introduction port, 9...Fluid introduction chamber, 10...
Perforated plate, 11... Bolt, 12... Hole, 13...
Fluid pressure conduction chamber, 14...Fluid pressure conduction port.

Claims (4)

[Scope of utility model registration request] (1) A perforated plate is provided inside the hollow sealed container to divide it into a fluid introduction chamber and a fluid pressure conduction chamber, and the fluid introduction chamber has a fluid introduction port and the fluid pressure conduction chamber has a fluid inlet. A fluid vibration-proof tank equipped with a pressure conduction port. (2) The vibration-proof tank according to claim 1, wherein the perforated plate has a hole diameter of 0.1 to 10 mm. (3) The anti-vibration tank according to claim 1, wherein the fluid inlet is shaped so that the fluid is introduced into the fluid inlet chamber parallel to the perforated plate. (4) The anti-vibration tank according to claim 1, wherein the fluid pressure transmission port is arranged parallel to the perforated plate.