JPH11138053A - Gas-liquid separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-liquid separator which can improve the flow rate measuring precision of separated liquid and the flow rate measuring precision of separated gas by preventing the turbulence of a liquid level in a cyclone separator, the entrainment of bubbles into liquid, and others. SOLUTION: In a gas-liquid separator which is equipped with a cyclone separator 1 in which two-phase current fluid (a) is supplied from the side part, separated gas (b) is discharged from the upper part, and separated liquid (e) is discharged from the lower part, a a flow rate detector 7 of the separated gas, a high liquid level detector 2 and a low liquid level detector 3 which are installed on the sidewall of the cyclone separator 1 and measures the flow rates of the separated gas (b) and the separated liquid (e), a device 11 for preventing the turbulence of a liquid surface is installed between the supply position of the fluid (a) and the installation position of the detector 2. The device 11 is formed from a reverse truncated cone type sedimentation cylinder, a semicircular double stage bulk plate, an orifice disk, or a separator refraction part. Or, a funnel-type inner cylinder is installed in the cyclone separator 1, and a liquid discharge flow rate adjustment means is equipped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclone-type gas-liquid separation apparatus applied to separation of a gas-liquid two-phase flow fluid that does not dissolve in each other, for example, a mixed fluid of air and water.

[0002]

2. Description of the Related Art A conventional gas-liquid separator will be described with reference to FIG. In FIG. 6, the gas-liquid two-phase flow fluid a is sent from the inlet pipe 5 into the cylindrical cyclone separator 1 from the tangential direction, and is swirled to be separated into gas and liquid.

The separated gas (hereinafter simply referred to as gas) b separated from the two-phase flow fluid a rises in the cyclone separator, and the flow rate is measured by a gas flow detector (for example, an orifice flow meter) 7. Exhaust gas d is discharged out of the system. On the other hand, a separated liquid (hereinafter simply referred to as a liquid) e
Forms a liquid film along the inner wall surface of the cyclone separator 1, turns downward, and flows down as drainage c.

The flow rate of the liquid e separated from the two-phase flow fluid a is measured by detecting the liquid level of the liquid e in the cyclone separator 1. Specifically, the flow is as follows. Have been done.

The liquid level of the liquid e is detected by the high liquid level detector 2 for the high liquid level 9 and by the low liquid level detector 3 for the low liquid level 10, and the respective detection signals are transmitted via the timer 6. Input to the computer 8.

When a high liquid level signal is input, the computer 8 opens the electromagnetic valve 4 and discharges the liquid e as the drain liquid c. When a low liquid level signal is input, the computer 8 closes the electromagnetic valve 4 and closes the liquid e. The time until the position 9 is reached is measured by the timer 6, and the flow rate of the liquid e is obtained from the time. At the same time when the high liquid level detector 2 detects the high liquid level 9, the solenoid valve 4 is opened again, and the liquid e is discharged out of the system.

[0007]

In the conventional gas-liquid separation device, the flow rate of the separated liquid is measured by measuring the time from the low level to the high level as described above. Was. However, the liquid film formed on the inner wall of the cyclone separator is largely disturbed by the separated liquid, and the liquid level is disturbed by the flowing liquid film, so that the liquid level detector malfunctions and the liquid flow rate is reduced. In some cases, accurate automatic measurement was not possible.

Further, small bubbles are mixed in the liquid, and the bubbles are entrained in the liquid discharged from the solenoid valve 4, so that the accuracy of measuring the gas flow rate may be deteriorated. Further, during the liquid discharge, the inside of the cyclone separator becomes a negative pressure as the liquid level decreases and the gas is sucked, so that the gas flow rate measurement accuracy at the time of the liquid level lowering may deteriorate.

The present invention solves the above-mentioned problem of the conventional device.
Prevents liquid level turbulence in the cyclone separator, prevents entrainment of bubbles in the liquid, etc., and increases the flow measurement accuracy of the separated liquid and the flow measurement accuracy of the separated gas. It is an object of the present invention to provide a gas-liquid separation device capable of performing the above.

[0010]

[Means for Solving the Problems]

(1) The present invention relates to a gas-liquid separation device, a cylindrical cyclone separator which is supplied with a two-phase flow fluid of gas and liquid from a side portion, discharges a separation gas from an upper portion, and discharges a separation liquid from a lower portion, and A gas-liquid separation device comprising a high liquid level detector and a low liquid level detector provided on a side wall below a supply position of a two-phase flow fluid of the cyclone separator, wherein a flow rate of a separated liquid is measured. The apparatus is characterized in that the separator is provided with a liquid level disturbance preventer provided between a supply position of the two-phase flow fluid and a mounting position of the high liquid level detector.

In the above, the liquid separated from the two-phase flow fluid supplied from the side of the cyclone separator, forming a liquid film on the inner wall surface of the cyclone separator, and flowing down while turning, is a liquid level disturbance preventer. As a result, it separates or decelerates from the inner wall surface and flows down.

Therefore, the liquid level of the liquid detected by the high liquid level detector or the low liquid level detector is not disturbed by the disturbance of the liquid film or the falling impact of the separated water. Detection can be performed accurately.

(2) In the present invention, in the above (1), the liquid level turbulence preventer is formed by an inverted truncated cone-shaped settling cylinder, a half-moon-shaped two-stage bulkhead, an orifice disk, or a separator bending portion. It is characterized by:

In the above, the inverted truncated cone-shaped settling cylinder, the half-moon-shaped two-stage baffle plate, or the orifice disk can separate the flowing liquid from the inner wall surface of the cyclone separator. Separated water can be decelerated.

[0015] Therefore, it is possible to prevent the liquid surface of the liquid from being disturbed or the liquid surface from being disturbed due to a falling impact, and it is possible to accurately detect the liquid level by each detector.

(3) The present invention relates to a gas-liquid separation device, and has a cylindrical cyclone separation system in which a two-phase flow fluid of gas and liquid is supplied from a side portion, a separation gas is discharged from an upper portion, and a separation liquid is discharged from a lower portion. , A high-level detector and a low-level detector provided on the side wall below the two-phase flow fluid supply position of the cyclone separator, and the flow rate of the separated gas and the separated liquid. In the gas-liquid separator in which the measurement is performed, the entire circumference of the upper end of the side wall of the cyclone separator between the supply position of the two-phase flow fluid of the cyclone separator and the mounting position of the high liquid level detector is attached, and The lower cylinder forms an inner cylinder in the cyclone separator, and the lower end thereof is provided with a funnel-shaped inner cylinder that opens into the cyclone separator below the mounting position of the low liquid level detector. And also the above cyclone The liquid outlet of the separator is provided at a height position between the mounting position of the low liquid level detector and the lower end of the funnel-shaped inner cylinder, and further, the liquid outlet of the cyclone separator A liquid discharge amount adjusting means is provided on the downstream side of the apparatus.

Therefore, the liquid level in the cyclone separator is prevented from being disturbed, and the mixing of bubbles in the liquid is prevented.
It is possible to increase the flow rate measurement accuracy of the separated liquid and the flow rate measurement accuracy of the separated gas.

(4) The present invention is characterized in that in (1), (2) or (3), the gas is air and the liquid is water.

Therefore, the present invention can be implemented in a particularly effective field of application.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A gas-liquid separator according to a first embodiment of the present invention will be described with reference to FIG.

In the present embodiment, the two-phase fluid a
, A cylindrical cyclone separator 1 for discharging separated air b from the upper part and discharging separated water e from the lower part, a solenoid valve 4 provided at the lower part of the separator 1, A high liquid level detector 2 and a low liquid level detector 3 provided on the side wall of the cyclone separator 1 below the connection position, and a computer 8 to which the detectors 2 and 3 are connected via a timer 6 are provided. This is related to a gas-liquid separation device, and since this portion is the same as that of a conventional device, the details thereof are omitted.

The present embodiment shown in FIG. 1 is a gas-liquid separation device in which the inverted liquid cone is fixed to the inner wall of the cyclone separator 1 between the position where the inlet pipe 5 is connected and the position where the high liquid level detector 2 is mounted. Inverted frustoconical settling cylinder 1 formed in shape and penetrating vertically
1 is provided.

In the above, the separated water e separated from the separated air b in the cyclone separator 1 forms a liquid film along the inner wall surface of the separator 1 and swirls down. When it reaches, it flows along the wall,
A streamline f is formed as shown in FIG.

Therefore, below the inverted truncated cone-shaped settling cylinder 11, the flow of the separation water e separates from the inner wall surface of the cyclone separator 1, and the liquid surface is not disturbed by the liquid film disturbance. The liquid level detectors 2 and 3 can detect the liquid levels 9 and 10 without malfunction, and can accurately measure the flow rate of the separated water e.

A gas-liquid separator according to a second embodiment of the present invention will be described with reference to FIGS. 2 (a) and 2 (b). FIG.
In another embodiment shown in (a) and (b), instead of the inverted truncated cone-shaped settling cylinder 11 used as the liquid level disturbance prevention device in the above-described embodiment, a half-moon-shaped two-stage cover plate 12 or An orifice disk 13 is used.

When the half-moon-shaped two-stage bulkhead plate 12 and the orifice disk 13 are used, the inverted frustoconical settling cylinder 1 is also used.
As in the case of 1, the flow of the separated water e is separated from the inner wall surface of the cyclone separator 1, so that the liquid surface is not disturbed by the flow of the separated water, and the liquid levels 9 and 10 can be accurately detected. It has become possible.

A gas-liquid separator according to a third embodiment of the present invention will be described with reference to FIG. In the third embodiment shown in FIG. 3, the liquid level disturbance prevention device is configured by a separator bending portion 14 formed by bending a part of the cyclone separator 1.

In the above description, the separation water e flowing down along the inner wall surface of the cyclone separator 1 has its falling speed reduced by the separator refraction section 14, so that the liquid surface is not disturbed by the separation water e flowing down. And liquid levels 9 and 10 can be accurately detected.

In the first to third embodiments of the present invention, the case of a two-phase flow fluid of air and water has been described as an example. However, the present invention is not limited to this, and the As a gas-liquid separation device in the case of liquid two-phase flow fluid,
The same applies.

A fourth embodiment of the present invention will be described below with reference to FIG. 4A and 4B are explanatory views of a gas-liquid separation device according to the fourth embodiment, wherein FIG. 4A is a side sectional view, and FIG. 4B is a view taken in the direction of arrows BB in FIG. The same parts as those in the first embodiment or the third embodiment are denoted by the same reference numerals, and description thereof will be omitted.

On the inner side wall of the cyclone separator 1, the enlarged upper end 15-of the funnel-shaped inner cylinder 15 is provided between the mounting position of the two-phase fluid inlet pipe 5 and the mounting position of the high liquid level detector 2. 1 is attached so as to be in contact with the entire circumference. The funnel-shaped inner cylinder 15 is
After narrowing the lower side from the upper end 15-1 into an inverted truncated cone, the straight pipe portion 1 having an outer diameter smaller than the inner diameter of the cyclone separator 1
5-2, and is disposed in the cyclone separator 1 in the shape of its inner cylinder. The lower end 15-3 of the funnel-shaped inner cylinder 15 is opened into the cyclone separator 1 below the low liquid level detector 3.

A liquid outlet 1 is provided at the lower end of the cyclone separator 1.
6, a manual valve 17 as a liquid discharge amount adjusting means is connected in series downstream of the solenoid valve 4 in addition to the solenoid valve 4 described above. Note that the manual valve 17 may be connected in series upstream of the solenoid valve 4.

The flow rate detector 7 for the separated gas b is as described above in the conventional example. In the present embodiment, the liquid e separated in the cyclone separator 1 forms a liquid film along the wall surface of the cyclone separator 1 and flows down while swirling. On the downstream side from 1, the separated liquid e separates from the wall surface and flows down in the straight pipe portion 15-2 of the funnel-shaped inner cylinder 15. As a result, it is possible to eliminate the disturbance of the field of view caused by the disturbance of the liquid film on the wall of the cyclone separator 1, which is one of the causes of the malfunction of the liquid level detectors 2 and 3.

Further, a region where the separated liquid e descends in the cyclone separator 1 and a region where the liquid level is detected can be divided, and the disturbance of the detected liquid level can be reduced. , 3 can be eliminated.

Further, the manual valve 1 is connected to the liquid discharge port 16 at the lower part of the cyclone separator 1 and serves as a means for adjusting the liquid discharge amount in series downstream (or upstream) of the solenoid valve 4.
Since the solenoid valve 7 is installed, the solenoid valve 4 is opened by adjusting the opening of the manual valve 17 in advance, so that the liquid level descending speed when the liquid e is discharged can be adjusted. The liquid e and the gas b (particularly fine bubbles) can be reliably separated in the cyclone separator 1 by slowing down the liquid descent speed at the time of discharging the liquid, and the liquid e is entrained by the discharged liquid. The amount of air bubbles can be reduced, and the flow rate measurement accuracy of the gas b can be improved.

In addition to the above effects, the amount of the gas b sucked in the cyclone separator 1 can be reduced by slowing down the liquid level, and the flow rate of the gas b at the time of the liquid level drop can be measured. Accuracy can be improved.

A fifth embodiment of the present invention will be described below with reference to FIG. FIG. 5 is an explanatory diagram showing a side cross section of the gas-liquid separation device according to the fifth embodiment. The same parts as those in the above-described first to fourth embodiments are denoted by the same reference numerals, and description thereof will be omitted.

In the present embodiment, a cyclone separator is provided at a height between the lower end 15-3 of the funnel-shaped inner cylinder 15 and the mounting position of the low liquid level detector 3 in the fourth embodiment. 1
Is provided with a liquid discharge port 16 '.

For this reason, in the present embodiment, in addition to the effect of preventing the problem of liquid film turbulence and liquid level turbulence caused by the funnel-shaped inner cylinder 15 described in the fourth embodiment, as shown in FIG. The direction of the flow of the liquid e is the lower end 15 of the funnel-shaped inner cylinder 15.
By changing from downward to upward in the vicinity of −3, fine bubbles in the liquid can be reliably separated, bubbles are not entrained at the time of discharging the liquid, and the measurement accuracy of the gas flow rate can be improved.

Furthermore, even if the fine bubbles are accompanied by the liquid and flow down, in a state where the liquid is not discharged, the gas b and the liquid e are more separated in the annular portion outside the funnel-shaped inner cylinder 15. This can be performed reliably, the bubbles are not entrained at the time of discharging the liquid, and the flow rate measurement accuracy of the gas b can be improved.

In the vicinity of the liquid outlet 16 ', the liquid e
Gas b leaks from the liquid discharge port 16 'during the final stage of liquid discharge (between the time when the low liquid level detector 3 detects the liquid level and the solenoid valve 4 closes). And the measurement accuracy of the flow rate of the gas b can be improved.

The effect of improving the measurement accuracy of the flow rate of the gas b can be further improved by using it together with the manual valve 17 as in the fourth embodiment.

In the fourth and fifth embodiments of the present invention described above, the case of a two-phase fluid of gas and liquid has been described as an example. The present invention is particularly effectively applied as a gas-liquid separation device for flowing fluid. Although the present invention has been described with reference to the embodiment shown in the drawings, the present invention is not limited to the embodiment, and various changes may be made to the specific structure within the scope of the present invention. Not even.

[0044]

According to the present invention, there is provided a cyclone separator for supplying a two-phase flow fluid of gas and liquid from a side portion, discharging a separated gas from an upper portion, and discharging a separated liquid from a lower portion, and provided on a side wall of the cyclone separator. In a gas-liquid separation device that includes a high liquid level detector and a low liquid level detector that measures the flow rate of a separated liquid, it is provided between the supply position of the two-phase flow fluid and the mounting position of the high liquid level detector. By having a liquid level disturbance preventive device provided, this preventive device was also formed by an inverted truncated cone-shaped settling cylinder, a half-moon-shaped two-stage bulkhead plate, an orifice disk, or a separator bending portion. As a result, the liquid surface of the liquid detected by the high liquid level detector or the low liquid level detector is not disturbed by the liquid film turbulence or the falling impact of the liquid. Detection can be performed accurately It becomes, it is possible to flow measurement accurate separation liquid.

Further, the present invention also provides a cylindrical cyclone separator, in which a two-phase flow fluid of gas and liquid is supplied from a side portion, discharges a separation gas from an upper portion, and discharges a separation liquid from a lower portion, a flow detector for a separation gas, and In a gas-liquid separation device provided with a high liquid level detector and a low liquid level detector provided on a side wall below a two-phase flow fluid supply position of the cyclone separator, and a flow rate measurement of a separated gas and a separated liquid is performed. The entire circumference of the upper end is attached to the side wall of the cyclone separator between the supply position of the two-phase flow fluid of the cyclone separator and the attachment position of the high liquid level detector, and the lower side from the upper end is inside the cyclone separator. By providing an inner cylinder having a funnel-shaped inner cylinder whose lower end is opened into the cyclone separator below the mounting position of the low liquid level detector, a liquid discharge port of the cyclone separator is provided. The above low liquid level detection At the height between the mounting position of the inner funnel and the lower end of the funnel-shaped inner cylinder, and further provided with a liquid discharge amount adjusting means on the downstream side of the liquid discharge port of the cyclone separator. Since the liquid separated by the separator flows down in the funnel-shaped inner cylinder, the malfunction of each liquid level detector due to the turbulence of the liquid film is removed, and the turbulence of the detected liquid level is reduced to accurately detect each liquid level. In addition to accurate measurement of the flow rate of the separated liquid, the separation of liquid and gas can be ensured to prevent gas entrainment during liquid discharge from the cyclone separator, and also during liquid discharge. The suction speed of the gas can be reduced by slowing down the liquid descending speed, and the flow rate of the separated gas can be measured accurately.

In the present invention, the gas is air,
It is particularly effective as a gas-liquid separation device used for a two-phase fluid in which the liquid is water.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a gas-liquid separation device according to a first embodiment of the present invention, wherein (a) is a side sectional view and (b) is AA of (a).
(C) is an operation explanatory view.

FIGS. 2A and 2B are explanatory diagrams of a gas-liquid separation device according to a second embodiment of the present invention, wherein FIG. 2A shows a case where the liquid level disturbance preventer is a half-moon-shaped two-stage cover plate, and FIG. Is the case.

FIG. 3 is an explanatory diagram of a gas-liquid separation device according to a third embodiment of the present invention.

FIGS. 4A and 4B are explanatory views of a gas-liquid separation device according to a fourth embodiment of the present invention, wherein FIG. 4A is a side sectional view, and FIG.
It is an arrow view.

FIG. 5 is an explanatory diagram showing a side cross section of a gas-liquid separation device according to a fifth embodiment of the present invention.

FIG. 6 is a side sectional view of an example of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cyclone separator 2 High liquid level detector 3 Low liquid level detector 4 Solenoid valve 5 Inlet pipe 6 Timer 7 Flow rate detector 8 Computer 11 Inverted frustoconical settling cylinder 12 Half-moon-shaped two-stage cover 13 Orifice disk 14 Separation Deflector 15 Funnel-shaped inner cylinder 16 Liquid outlet 16 'Liquid outlet 17 Manual valve

Claims (9)

[Claims] A cylindrical cyclone separator for supplying a two-phase flow fluid of gas and liquid from a side portion, discharging a separated gas from an upper portion, and discharging a separated liquid from a lower portion, and a two-phase flow fluid of the cyclone separator A high-liquid level detector and a low-liquid level detector provided on the side wall below the supply position of the liquid supply device, wherein the flow rate of the separated liquid is measured. A gas-liquid separation device comprising a liquid level disturbance prevention device provided between a position and a mounting position of a high liquid level detector. 2. The gas-liquid separation device according to claim 1, wherein the liquid level disturbance prevention device is formed by an inverted truncated cone-shaped settling cylinder. 3. The gas-liquid separation device according to claim 1, wherein the liquid level disturbance prevention device is formed by a half-moon-shaped two-stage cover plate. 4. The gas-liquid separation device according to claim 1, wherein the liquid level disturbance prevention device is formed by an orifice disk. 5. The gas-liquid separation device according to claim 1, wherein the liquid level disturbance prevention device is formed by a separator bending portion. 6. A cyclone separator having a cylindrical shape, a gas-liquid two-phase flow fluid being supplied from a side portion, discharging a separated gas from an upper portion, and discharging a separated liquid from a lower portion, a flow detector for the separated gas, and the cyclone separation. A gas-liquid separation device comprising a high liquid level detector and a low liquid level detector provided on a side wall below a supply position of a two-phase flow fluid of the vessel, wherein flow rates of separated gas and separated liquid are measured. The entire circumference of the upper end is attached to the side wall of the cyclone separator between the supply position of the two-phase flow fluid of the separator and the mounting position of the high liquid level detector, and the inner cylinder in the cyclone separator is below the upper end. A gas-liquid separator characterized in that it has a funnel-shaped inner cylinder whose lower end is opened into the cyclone separator below the mounting position of the low liquid level detector. 7. The gas-liquid separator according to claim 6, wherein
A gas-liquid separator, wherein a liquid outlet of the cyclone separator is provided at a height between a mounting position of the low liquid level detector and a lower end of the funnel-shaped inner cylinder. 8. The gas-liquid separation device according to claim 6, further comprising a liquid discharge amount adjusting means downstream of the liquid discharge port of the cyclone separator. apparatus. 9. The gas-liquid separation device according to claim 1, wherein the gas is air, and the liquid is water.