JPS594730Y2 - gas liquid separator - Google Patents

Description

[Detailed description of the invention] The present invention relates to a gas-liquid separator, and more specifically, the invention separates a gas-liquid two-phase flow into gas and liquid by the action of a packet installed inside the main body and having an inclined plate at the bottom. related to gas-liquid separators.

An example of a conventional gas-liquid separator of this type is shown in FIG.

The main body 1 is cylindrical and closed at the top and bottom, and has an inlet 2 and an outlet 3. Inside the main body 1, there is an inlet 4 that is cylindrical and open at the top, and an inclined plate at the bottom. 5 and a packet 6 is installed.

The inlet 2 is provided at a position facing the inclined plate 5 of the packet 6, while the outlet 3 extends from inside the packet 4, through the main body 1, and to the outside of the main body 1.

In the packet type gas-liquid separator having the above configuration, the gas-liquid two-phase flow introduced from the inlet 2 into the main body 1 flows upward after hitting the inclined plate 5 of the packet 6.
It rises through an annular passage 7 formed between the inner side of the body 1 and the outer side of the packet 6 and flows into the packet 6 from the inlet 4.

At this time, the gas which has a small specific gravity and tends to rise does not flow into the packet 6, but continues to rise, is separated from the liquid, and only the liquid is discharged to the outside through the outlet 3.

On the other hand, the separated gas rises and is collected in the upper space 8 inside the main body 1.

When the volume of this space 8 increases and the float 9 descends as the liquid level falls, the valve 1 that interlocks with the float 9
0 is opened and the gas in the space 8 is exhausted.

As the amount of gas in space 8 decreases, the liquid level recovers,
The float 9 rises and the valve 10 is closed.

The above operations are repeated to continue separating gas and liquid.

In the above configuration, there is almost no function to forcibly enlarge the bubbles included in the gas-liquid two-phase flow, and the flow form of the incoming gas-liquid two-phase flow, that is, the inside of the horizontal pipe connected to the inlet 2 is changed to gas. Wave-like flow in which liquid is divided into two phases (upper and lower), piston flow in which gas flows as a large piston in liquid, bubble flow in which gas flows in the form of bubbles in liquid, and gas flow in a single phase in liquid. The flow form, such as a uniform flow that disperses and flows, greatly affects the separation performance, and fine bubbles such as bubble flow and uniform flow could hardly be separated.

Furthermore, the flow of the gas-liquid two-phase flow that has ascended through the annular passage 7 is not sufficiently rectified and the flow is turbulent, resulting in the drawback that gas is mixed into the fluid flowing downward.

In view of the problems of the conventional method described above, the present invention utilizes a large number of linear fluid passages to define the annular passage formed between the inner surface of the main body and the outer surface of the packet, and these fluid passages provide
It is characterized by being configured to allow bubbles to grow.

Specific examples will be explained below based on the drawings.

In the present invention, as shown in FIG.
is defined by a large number of thin tubes 11 to form a linear fluid passage, and is configured to rectify the upward flow.

As shown in FIG. These cylinders may be fixed to each other by one or more supporting members protruding radially from the outer surface of the packet 6, or concentric cylinders may be arranged,
This also includes the case where flat plates extending over the entire length of the cylinder are protruded from the outer surface of the packet 6 at equal intervals in the radial direction, so that the planar shape is almost like a lattice.

In the case of FIG. 3, the diameter of each thin tube 11 is set to 1Q mm or more, since resistance increases if it is too small.

The space 12 between these thin tubes 11, 11... also serves as a fluid passage, but this is 10 m long.
The spacing may be less than m.

As shown in the figure, the thin tubes 11゜11... are arranged so that as they are located from the inside to the outside, their upper ends 11a are located further away from the same horizontal plane, that is, the outer thin tubes become longer. This is preferable because the fluid flows smoothly into the inlet 4 of the packet 6 and the rectifying effect becomes larger.

Further, the lower ends 11b of the thin tubes 11, 11, . . . are located slightly above the inlet 2 and disposed on the same horizontal plane.

In the figure, 15 is a safety valve, and 16 is a peephole.

As mentioned above, if the annular passage 7 is defined by a number of straight fluid passages, the effective cross-sectional area within the annular passage 7 will be small, and therefore the upward velocity of the fluid will be slightly higher, but each capillary 11 Since the passage area of the fluid is small, the rectifying effect is large, and the bubbles combine and grow.

It is generally known that when the bubbles grow to a large size as described above, the rate of rise increases and they tend to separate.

According to the present invention, the growth of bubbles, which cannot be expected with conventional packet-type gas-liquid separators, is distantly avoided with an extremely simple structure.

Further, since the flow is not disturbed by the rectifying action, there is no possibility that rising air bubbles will be drawn into the liquid.

Although the present invention may have the same structure as the conventional packet type gas-liquid separator in other respects, there is no problem, but in this example, the float 13 has a different structure from the float 9 in FIG.

The diameter d of the float 13 is 0.5 to 0.0 of the inner diameter of the main body 1.
The float 13 is approximately 8 times as large as the liquid, and is provided with a plurality of holes 14 to allow air bubbles rising from the liquid to pass through.

When formed in this way, fluid flows smoothly into the packet 6 due to the combination with the thin tube 11 which is made higher toward the main body 1 side.

In the conventional case, the gas-liquid two-phase flow was blown upward from the annular passage 7, which caused large turbulence at the interface between the liquid and gas, and there was a risk that the separated gas would be mixed into the liquid again. .

Therefore, in order to prevent this, the liquid level should be adjusted to the inlet 4 of the packet 6.
However, according to this example, since there is less disturbance at the interface, the size of the main body 1 itself can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of a conventional packet type gas-liquid separator, FIG. 2 is a vertical sectional view of the gas-liquid separator of the present invention, and FIG. 3 is a horizontal sectional view of a fluid passage formed by a thin tube. 1...Main body, 2...Inflow port, 3...
... Outlet, 5... Inclined plate, 6...
Packet, 7... Circular passage, 11...
tubule.

Claims (1)

[Scope of utility model registration request] A packet provided inside the main body, open at the top and closed at the bottom by an inclined plate, an inlet provided on the side of the main body so that the fluid flowing into the main body collides with the inclined plate, and an inlet from the inside of the packet. A gas-liquid separator comprising an outlet extending through the body and out of the body, and a number of straight fluid passages provided between the packet and the body.