JPH0429703A - Accumulator - Google Patents

Abstract

PURPOSE:To prevent the discharge of a liquid from a discharge part by providing an accumulator on the way of piping to apply an up-grade thereto in a flow direction and providing a level detection part and a rising pipe to the accumulator in the vicinity of the front end part thereof in the flow direction and providing an exhaust part to the upper part of the rising pipe. CONSTITUTION:Since an accumulator 5 is provided with an up-grade in a flow direction, the rear end part 5b thereof is filled with a liquid and, since excessive gas quietly moves in the liquid along the upper surface of the accumulator 5 even when said gas becomes large gas bubbles to float, the disturbance by the surface of the liquid in the front end part 5a of the accumulator 5 is reduced. Therefore, the liquid level in the accumulator 5 can be detected by a level detector and the outflow of liquid droplets from an exhaust part 4 can be prevented by the control of the liquid level. The separated excessive gas is discharged from the exhaust part 4. An auxiliary flow path 6 is connected so as to make the position of the front end bottom part 5a lower than that of the rear end bottom part 5b to eliminate the stagnation of the liquid in the accumulator and, therefore, the clogging of an exhaust valve or a nozzle due to the liquid corrosive substance or contaminant in the accumulator and the damage due to freezing are eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an accumulator that has a function of efficiently separating gas and liquid that are not completely dissolved when a large amount of gas is dissolved in a liquid.

[Conventional technology]

Conventional accumulators that also function as gas-liquid separators are
By providing a horizontal or downward slope with respect to the flow direction, the gas in the gas-liquid mixed water is facilitated to move upward, promoting the dissolution of excess gas, and furthermore, the excess gas that remains undissolved is separated.

However, an accumulator with a horizontal or downward slope with respect to the flow gradient as described above is not suitable for gas separation,
Although the dissolving ability is excellent, as shown in Figure 4, the proportion of the liquid portion in the gas-liquid mixed water introduction part (rear end part 5b) in the accumulator is small, and the separated excess gas remains as large bubbles. The bubbles float above the accumulator and are violently disturbed on the water surface, resulting in rapid fluctuations in the water surface. On the other hand, since the liquid level is high at the front end portion 5a of the accumulator, if the water level fluctuates rapidly, even water droplets will come out from the discharge portion 4 when the pressure fluctuates.

[Problem to be solved by the invention]

The present invention was made in view of the above-mentioned problems, and its purpose is to provide good dissolution performance and gas-liquid separation performance, and to control the liquid level by internal water level detection, even during pressure fluctuations. It is an object of the present invention to provide an accumulator having a structure in which liquid does not come out from an exhaust part and water does not accumulate inside when the device is stopped.

[Means to solve the problem]

The accumulator of the present invention includes a large diameter section having a sufficiently large pipe diameter in the middle of the piping, the large diameter section having an upward slope in the flow direction, and a water level detection section and a water level detection section near the front end of the large diameter section in the flow direction. It is characterized by providing a riser pipe, providing an exhaust part above the riser pipe, and further having an auxiliary flow path having a slope such that the bottom of the front end is at the same height or lower than the bottom of the rear end. .

[For production]

That is, in the present invention, by making the pipe diameter of the accumulator sufficiently large, the excess gas in the gas-liquid mixed water can be sufficiently separated, similar to when the accumulator is made to have a horizontal or downward slope with respect to the flow gradient. The separated gas is stored in the riser pipe 3 and exhausted from the exhaust section 4.

Furthermore, by making the accumulator have an upward slope with respect to the flow direction, the proportion of liquid in the rear end portion 5b of the accumulator increases, and even if the excess gas becomes large bubbles and floats up, the excess gas flows through the liquid onto the top surface of the accumulator. Since it moves quietly along the water level, it suppresses fluctuations in the water level due to turbulence of bubbles at the rear end 5b where the water level detection part 2 is located, making it easy to detect the water level, and injecting gas when the water level rises. It is possible to keep the water level in the accumulator constant by

As a result, liquid is prevented from flowing out from the discharge section due to severe fluctuations in the liquid level in the accumulator or rise in the water level.

In addition, since the auxiliary flow path has a slope such that the front end bottom is at the same height or lower than the rear end bottom, water does not accumulate inside the device even when the device is stopped.

〔Example〕

The present invention will be described in detail below based on embodiments shown in the accompanying drawings.

FIG. 1 shows an embodiment of the accumulator 5 of the present invention. This has a cylindrical shape with a sufficiently large diameter, and has an upward slope in the flow direction, and furthermore, the pipe 3 rises upward from the upper surface near the front end 5a in the flow direction. An exhaust section 4 consisting of an exhaust valve and a water level detection section 2 consisting of a float switch are provided on the upper part of the riser pipe 3.

Further, an auxiliary flow path 6 is provided at the bottom of the accumulator, and is connected so that the front end bottom 5a is lower than the rear end bottom 5b. The accumulator 5 according to the present invention is constructed in this way.

Here, a water level detection unit 2 provided at the top of the riser pipe 3
The method is not limited to the float sinch method, and other methods such as an electrode method and a capacitance method may be used.

FIG. 2 shows another embodiment of the accumulator 5 of the present invention.

Here, piping 1c extends vertically downward from the front end bottom 5a of the accumulator through a thin bypass pipe to the rear end bottom 5b.
By connecting them, an auxiliary flow path 6 is formed, and stagnant water is prevented from accumulating in the rear end portion 5b of the accumulator.

FIG. 3 is an explanatory diagram of the usage state of the accumulator according to the present invention, and in an embodiment, an accumulator 5 is provided between piping 1b and 1c of a fine bubble generator 12 attached to a tank 11 such as a bathtub. An example is illustrative.

The accumulator 5 is provided between the pump 7 and the discharge port 9, and is connected to the pump 7 by a pipe 1b and to the discharge port 9 by a pipe 1c.

The micro bubble generator 12 is connected to the intake pipe 1 in order from the water intake port 8 side.
0, pump 7, accumulator 5, and discharge port 9 are arranged.

When the pump 7 is driven, the liquid in the tank lI is sucked from the water intake port 8 by the action of the pump 7, and when this liquid passes through the pipe 1a, air and gases such as carbon dioxide and the like are generated in the intake pipe 10. is inhaled and dissolved under pressure within the pump 7.

Then, the liquid in which the gas is dissolved is sent to the discharge port 9 through the pipe 1b while still being pressurized.
During this process, when the fluid flows through the accumulator 5, the accumulator 5 not only absorbs the pulsation of the liquid and absorbs the impact pressure, but also absorbs the gas that was not completely dissolved by the pressurization in the pump 7. In addition to promoting the dissolution of
Even so, the excess gas that remains undissolved and mixed in the liquid floats to the side of the riser tube 4 to separate the excess gas from the liquid.

In other words, when a liquid containing gas flows inside the accumulator 5 as shown by the arrow hole in Figure 2, its inner diameter is sufficiently large so that the flow velocity is sufficiently slow, and the gas in the gas-liquid mixture water easily moves upward due to buoyancy. The dissolution of the excess gas is facilitated and the excess gas that still remains undissolved is separated.

Furthermore, since the accumulator 5 has an upward slope in the flow direction, the rear end 5b of the accumulator 5 is filled with liquid. Since it moves quietly along the top surface of the accumulator, the disturbance of the water surface at the front end 5a of the accumulator 5 is reduced. Therefore, the water level in the accumulator 5 can be detected by the water level detection part 2 provided at the upper part of the riser pipe 3 of the front end part 5a, and by controlling the liquid level, it is possible to prevent water droplets from coming out from the exhaust part 4. It can be prevented. On the other hand, the surplus gas separated upward is stored in the riser pipe 3 as shown by arrow B and is exhausted from the exhaust section 4. In addition, the liquid that has passed through the accumulator 5 is transferred to the piping IC.
It passes through the nozzle provided at the discharge port 9 and is discharged into the tank 11. At this time, the liquid in which the gas is dissolved changes from a pressurized state to a state in which the pressure is released all at once, so that the gas dissolved in the liquid precipitates and becomes fine bubbles that spread inside the tank 11. Then, when the microbubble generator 12 is stopped and the liquid in the tank 11 is drained, the liquid in the accumulator 6 flows downward (in the direction of the flow gradient) by gravity, and no stagnant water remains inside.

〔Effect of the invention〕

In the present invention, as described above, an accumulator with a sufficient pipe diameter is provided in the middle of the piping, this is made to have an upward slope in the flow direction, and a water level detection part and a riser pipe are installed near the front end in the flow direction. Since the exhaust part is provided at the top of this riser pipe, when separating excess gas, gas and liquid can be separated with a simple configuration, and turbulence on the water surface inside the accumulator is suppressed, thereby reducing the internal water level. It has become possible to control the liquid level through detection, and as a result, it has become possible to prevent liquid from flowing out from the discharge section. Moreover, despite the uphill slope, the auxiliary flow path prevents stagnant water from accumulating in the accumulator (the liquid inside will not rot, or contaminants will clog the exhaust valve or nozzle). There is no longer any risk of damage due to freezing.

[Brief explanation of drawings]

FIG. 1(a) is a schematic cross-sectional view of one embodiment of the present invention, the first (
b) is a side view of the same as above, FIG. 2 is a schematic cross-sectional view of another embodiment of the present invention, FIG. 3 is a schematic explanatory view showing an example of use of the present accumulator, and FIG. In the figure, 1 is a pipe, 2 is a water level detection part 3 is a riser pipe, and 4 is an exhaust part.

Claims (1)

[Claims] (1) Provide a large diameter part with a sufficiently large pipe diameter in the middle of the piping, make this large diameter part slope upward in the flow direction, and install a water level detection part and a riser pipe near the front end of the large diameter part in the flow direction. 1. An accumulator comprising: an exhaust section at the top of the riser; and an auxiliary flow path having a slope such that the bottom of the front end is at the same height or lower than the bottom of the rear end.