WO2024063267A1

WO2024063267A1 - Single-flow vortex tube having improved gas separation performance, and gas separation system using same

Info

Publication number: WO2024063267A1
Application number: PCT/KR2023/008992
Authority: WO
Inventors: 임석연; 유상석; 김병재; 박승환
Original assignee: 충남대학교산학협력단
Priority date: 2022-09-20
Filing date: 2023-06-28
Publication date: 2024-03-28

Abstract

The present invention relates to a single-flow vortex tube that allows the transport speed of gas inside to be rapidly accelerated instantaneously, thereby significantly improving gas separation performance by means of a vortex effect. In addition, the vortex tube comprises: a main housing which has an inlet formed on one side thereof and an outlet formed on the other side thereof, and is formed to have, continuously along the longitudinal direction, a contraction section in which the entire volume, including an internal transport path connecting the inlet and outlet, is contracted, and an expansion section in which the entire volume is expanded; a vortex generator which causes gas transported at high pressure and introduced into the inlet of the main housing to form a vortex and be transported along the internal transport path; and a control valve which is installed on an outlet side of the main housing to separate the gas transported along the internal transport path according to temperature and discharge the separated gas to the outside.

Description

Single-flow vortex tube with improved gas separation performance and gas separation system using the same

The present invention relates to a single-flow vortex tube that separates and discharges gas according to temperature and a gas separation system using the same. More specifically, the vortex effect is created by allowing the transfer speed of gas inside to be rapidly accelerated instantaneously. It relates to a single-flow vortex tube that can significantly improve gas separation performance and a gas separation system using the same.

In general, a vortex tube is a device that separates high-pressure gas introduced into the inside according to temperature by the vortex effect within it and discharges it into high-temperature gas and low-temperature gas.

Such vortex tubes are mainly used for cooling in various industrial sites due to various advantages such as not requiring a separate power source for gas separation, separation reaction occurring quickly, and being compact.

However, the cooling performance of the vortex tube itself is not superior to existing coolers, so its use is inevitably limited in environments that require excellent cooling performance.

Accordingly, for the purpose of improving the cooling performance of the vortex tube, a number of inventions such as the “vortex tube” in Korean Patent Publication No. 10-0880276 and the “vortex tube” in Korean Patent Publication No. 10-1151341 have been proposed to provide general information. It has been revealed.

In other words, the “vortex tube” of the Republic of Korea Patent Publication No. 10-0880276 is configured to cool the heat dissipation body by the Coanda effect in the process in which part of the air injected into the device is discharged through another path, so that it is different from the existing device. Unlike others, an invention has been proposed regarding a vortex tube that can be configured to completely block the path through which hot air is discharged, thereby improving the efficiency of blowing cold air to the outside.

In addition, in the “vortex tube” of the Republic of Korea Patent Publication No. 10-1151341, a rotation groove connecting the inlet and the vortex chamber is integrated into the cold air discharge trap to maximize the rotational force of the compressed air, and a cooling device with multiple heat dissipation fins is arranged. An invention has been proposed regarding a vortex tube that enables sufficient air cooling of the vortex chamber and ultimately improves the efficiency of spraying cold air to the outside.

However, the effect of improving cooling performance that can actually be realized simply by the effect of air cooling, which is commonly proposed in the above-mentioned prior inventions, is inevitably limited, and the use of this level of performance improvement alone in environments that require excellent cooling performance is still limited. There is no choice but to do so.

Therefore, it can be said that another solution is required to improve the cooling performance of the vortex tube.

On the other hand, compared to the counter-flow type vortex tube, which is all or most of the vortex tubes used in industrial sites, etc., single-flow type vortex tubes are either not used at all or are difficult to find use cases, and this situation can also be confirmed in the preceding inventions mentioned above. .

In other words, the above-mentioned prior inventions are all inventions targeting a counter-flow type vortex tube, and even in other inventions proposed for the purpose of improving cooling performance, the structure for a single-flow type vortex tube has not been confirmed.

Therefore, it is difficult to confirm the exact cooling performance of the single-flow vortex tube or the possibility of improvement, and this problem cannot be said to be desirable from the perspective of industrial development.

Vortex tubes, which have various advantages such as not requiring a separate power source for gas separation, rapid separation reaction, and compact design, are widely used as cooling devices in industrial fields, etc. due to their various advantages. However, the cooling performance itself is not superior to that of existing coolers, which inevitably limits its use in environments that require excellent cooling performance. Therefore, the present invention proposes a solution to this problem. It has one purpose.

In addition, compared to counter-flow type vortex tubes, which are all or most of the vortex tubes used in industrial sites, etc., single-flow type vortex tubes are not used at all or it is difficult to find use cases, so the present invention proposes a solution to this problem. For the purpose of

The present invention aims to achieve the above object,

An inlet is formed on one side, an outlet is formed on the other side, and the entire volume, including the internal transport path connecting the inlet and outlet, is composed of a contraction section where the volume is contracted and a diffusion section where the diffusion is continuous along the longitudinal direction. the main housing; A vortex generator that causes gas transported at high pressure and flowing into the inlet of the main housing to form a vortex and be transported along an internal transport path; And, a control valve installed on the outlet side of the main housing to separate the gas transported along the internal transfer path according to temperature and discharge it to the outside. We present a single-flow vortex tube with improved gas separation performance, comprising:

At this time, the main housing is characterized by an asymmetric configuration in which the length of the diffusion section is more than twice as long as the length of the contraction section.

In addition, the main housing is characterized in that one or more discharge pipes are formed to protrude in an inclined direction on the outer peripheral surface of the diffusion section.

In addition, the present invention includes a compressor that compresses gas and transfers it at high speed through a transfer pipe; It is composed of a single inlet pipe, a single main discharge pipe connected to the inlet 101, and one or more auxiliary discharge pipes opened and closed by a valve, so that the high-pressure gas transferred from the compressor is routed through one or more paths according to the flow rate. Distributor that discharges; Auxiliary vortex tubes connected to the plurality of auxiliary discharge pipes one by one to separate and discharge the supplied gas according to temperature; And, a control unit that automatically opens and closes the valve of the auxiliary discharge pipe according to the inflow amount of gas flowing into the distributor; We present a gas separation system using a single-flow vortex tube with improved gas separation performance, characterized by comprising:

The single-flow vortex tube with improved gas separation performance according to the present invention and the gas separation system using the same,

By using the main housing, which is composed of a contraction section in which the entire volume including the internal transfer path contracts and a diffusion section in which the diffusion section is continuous along the longitudinal direction, the transfer speed at which the gas is transferred within the housing suddenly increases rapidly. By allowing acceleration, the gas separation performance due to the vortex effect can be further improved, and as a result, the temperature of the gas discharged to the outside can be lowered further.

In addition, the present invention consists of a single-flow type vortex tube in which the entire structure, including the main housing, is formed in the same direction as the outlet through which high-temperature gas is discharged and the outlet through which low-temperature gas is discharged, so that those skilled in the art, etc. This may have the effect of increasing interest and use.

Figure 1 is a cross-sectional view of a general counter-flow type vortex tube.

Figure 2 is a cross-sectional view of a single-flow vortex tube with improved gas separation performance according to the present invention.

Figure 3 is an example diagram showing the flow of gas generated inside a single-flow vortex tube with improved gas separation performance according to the present invention and the flow of dry particles generated inside being discharged.

Figure 4 is a block diagram of a gas separation system using a single-flow vortex tube with improved gas separation performance according to the present invention.

In a uni-flow vortex tube that separates and discharges gas according to temperature, an inlet is formed on one side, an outlet is formed on the other side, and an internal transfer path connecting the inlet and outlet is included. A main housing composed of a contraction section in which the overall volume is contracted and a diffusion section in which the overall volume is diffused, being continuous along the longitudinal direction; A vortex generator that causes gas transported at high pressure and flowing into the inlet of the main housing to form a vortex and be transported along an internal transport path; And, a control valve installed on the outlet side of the main housing to separate the gas transported along the internal transfer path according to temperature and discharge it to the outside. It is characterized by being composed of a.

The present invention relates to a single-flow vortex tube (10) that separates gases according to temperature and discharges them,

An inlet 101 is formed on one side, an outlet 102 is formed on the other side, and a contraction section 103 in which the entire volume, including the internal transport path connecting the inlet 101 and the outlet 102, is contracted. A main housing (100) in which an over-diffusing diffusion section (104) is continuous along the longitudinal direction; A vortex generator 110 that causes the gas transported at high pressure and flowing into the inlet 101 of the main housing 100 to form a vortex and be transported along the internal transport path; And, a control valve 120 installed on the outlet 102 side of the main housing 100 to separate the gas transported along the internal transfer path according to temperature and discharge it to the outside; It is characterized by being composed of a.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

First, as mentioned above, the present invention is a single-flow type vortex tube, which is one of the vortex tubes, which are non-powered devices that separate gas supplied at high pressure into high-temperature gas and low-temperature gas depending on the temperature by the internal vortex effect and discharge them. (Uniflow type vortex tube) (10).

That is, in the present invention, the gas that is compressed and transferred from the external compressor 200 and introduced into the interior through the inlet 101 forms an ultra-high-speed vortex and is transferred to a single outlet and then separated into high-temperature gas and low-temperature gas. It has a structure that allows it to be discharged to the outside, and has a structural difference from the counter-flow type vortex tube in that it has a single discharge port as described above.

For reference, as shown in FIG. 1, the counter flow type vortex tube is compressed and transferred from an external compressor 200, and the gas flowing inside through the inlet forms an ultra-high-speed vortex and flows through an outlet on one side. It is transferred to one side, and the high-temperature gas is discharged to the outside by a valve installed on the outlet side, but the low-temperature gas is returned and discharged to the outside through another outlet on the other side, and is formed in opposite directions. It can be clearly distinguished from a single-flow type vortex tube by its external feature of having an outlet.

More specifically, in the present invention, an inlet 101 is formed on one side, an outlet 102 is formed on the other side, and the overall volume including the internal transfer path connecting the inlet 101 and the outlet 102 is It is characterized in that it includes a main housing 100 in which a shrinking section 103 and a spreading diffusion section 104 are continuous along the longitudinal direction.

That is, the main housing 100 is a major component that constitutes the overall shape of the present invention, and as shown in Figure 2, the inlet 101 through which gas transported at high pressure flows in the same way as a known single-flow vortex tube. is formed on one side, a transfer path through which the introduced gas is transferred is formed inside, and an outlet 102 through which the gas separated according to temperature is discharged to the outside is formed on the other side.

In addition, the main housing 100 is characterized in that one or more discharge pipes 105 are formed to protrude in an inclined direction on the outer peripheral surface of the diffusion section 104.

In addition, the main housing 100 is characterized in that a vortex generator 110 is installed adjacent to the inlet 101, whereby the high-pressure gas flowing into the inlet 101 immediately forms a strong vortex. It can be transported at high speed along the transport path.

At this time, the vortex generator 110 is an essential device in the construction of all vortex tubes, including the present invention, and can be configured in various forms so that the gas transported in a form penetrating the inside can form a vortex. .

In other words, the vortex generator 110 can use any one of those used in existing vortex tubes, and a new one can be applied if performance or cost-effectiveness can be improved.

Therefore, the high-pressure gas that is compressed and transported from the external compressor 200 and flows into the inlet 101 of the main housing 100 rotates at a high speed of about 1,000,000 RPM or more as it passes through the vortex generator 110, creating a vortex. can be formed, and in that state can be transported at high speed toward the discharge port 102 along the internal transport path.

That is, as shown in FIG. 3, a spiral movement of the gas occurs by the vortex generator 110 in the transfer path inside the main housing 100, and a separation phenomenon according to the temperature of the gas occurs along with the transfer. One airflow is formed that is transported along the inner wall of the path, and another airflow is formed that is transported to the center of the transport path. (There is no academic definition for this phenomenon, but it has been proven through numerous experiments, etc. there is.)

At this time, the main housing 100 is a contraction-diffusion type in which the volume shrinks along the longitudinal direction and then spreads again to a volume equal to or similar to the original volume. Not only the external shape but also the internal transport path is formed, thereby forming the internal transport path. A rapid change occurs in the transport speed of the gas being transported along.

In addition, the main housing 100 is not only configured as a contraction-diffusion type, but the diffusion section 104, where the volume spreads, is formed to be more than twice as long compared to the length of the contraction section 103, where the volume is contracted. By being configured in an asymmetrical manner, the amount of shrinkage per unit area where the volume shrinks along the length direction is formed to be greater than the amount of diffusion per unit area where the volume spreads.

According to the above configuration, the transport speed of the gas transported along the transport path inside the main housing 100 rapidly increases in the contraction section 103 where the inner diameter of the transport path is rapidly reduced, and as a result, The temperature of the gas transported to the center of the transport path may drop rapidly.

At this time, since the rapid temperature rise of the gas transported along the inner wall of the transport path does not occur immediately, the temperature of the gas transported to the center of the transport path is preceded by a decrease in temperature.

Therefore, the temperature of the gas transported inside the main housing 100 may rapidly drop to a maximum of 45°C or less at the end of the contraction section 103 or the beginning of the diffusion section 104, as shown in Figure 3. As shown, this causes condensation of the gas, resulting in a large amount of dry particles being generated and included in the gas.

At this time, initially, all or most of the large amount of dry particles are included in the gas transported to the center of the transport path, but later, they move to the gas transported along the inner wall of the transport path by centrifugal force.

In addition, the movement of dry particles due to centrifugal force can be further accelerated because it occurs in the diffusion section 104 of the main housing 100, where the cross-sectional area of the transfer path continues to expand, and as a result, all dry particles move to the inner wall side. movement occurs.

And, as described above, the main housing 100 is characterized in that one or more discharge pipes 105 are formed to protrude in an oblique direction on the outer peripheral surface of the diffusion section 104, so that the main housing 100 is configured to protrude in an oblique direction, so that the main housing 100 is configured to protrude in an inclined direction. Dry particle emissions occur.

Therefore, the gas discharged through the outlet 102 of the main housing 100 does not contain dry particles, and as a result, compared to the existing vortex tube, high temperature gas with a higher temperature and low temperature gas with a lower temperature are produced. The effect of being able to separate and discharge the gas to the outside occurs.

In other words, the present invention can realize a significant improvement in cooling performance by rapidly increasing the speed at which gas is transferred through the asymmetric contraction and diffusion configuration of the main housing 100, and a large amount of by-products are generated in the process. All dry particles can be removed through one or more discharge pipes 105.

At this time, a large amount of dry particles discharged through the one or more discharge pipes 105 may be transferred to an external collection device for processing through a hose or other pipe connected to the discharge pipe 105.

Meanwhile, as shown in Figures 2 and 3, on the outlet 102 side of the main housing 100, the gas transported along the internal transfer path is separated according to temperature and discharged to the outside for the purpose of controlling the discharge amount. It is characterized in that a control valve 120 is installed for this purpose.

At this time, the control valve 120 has a path for discharging high-temperature gas in the same path as the valve used in the counter-flow type vortex tube, but the low-temperature outlet 121 for discharging low-temperature gas is formed through the center. In that it differs from the valve used in a counter-flow type vortex tube.

Therefore, the high-temperature gas transported along the inner wall of the main housing 100 and the low-temperature gas transported along the center of the transport path are controlled by the control valve 120. It can be discharged through different routes, and emissions can also be controlled.

In addition, the present invention relates to a gas separation system using a single-flow vortex tube (10) with improved gas separation performance, comprising: a compressor (200) that compresses gas and transfers it at high speed through a transfer pipe; It is configured to include a single inlet pipe 211, a single main discharge pipe 212, and one or more auxiliary discharge pipes 213 that are opened and closed by a valve, so that the high-pressure gas transferred from the compressor 200 is adjusted according to the flow rate. Distributor 210 for discharging through one or more paths; Auxiliary vortex tubes 220 connected to the one or more auxiliary discharge pipes 213 one by one to separate and discharge the supplied gas according to temperature; And, a control unit that automatically opens and closes the valve of the auxiliary discharge pipe 213 according to the amount of gas flowing into the distributor 210; It is characterized by being composed of a.

First, the compressor 200 shown in FIG. 4 is a device that compresses gas and delivers high-pressure gas. It compresses the exhaust gas generated by combustion of fuel and transfers it at high speed through a transfer pipe or through reforming. It can be configured to compress the mixed gas discharged in the process of producing hydrogen and transfer it at high pressure through a transfer pipe.

That is, the compressor 200 may be configured to prioritize the exhaust gas emitted from engines such as industrial engines or ship engines, or to preferentially process the mixed gas emitted in the process of producing hydrogen through reforming. It may be possible, but this is not necessarily the case.

In addition, the distributor 210 shown in FIG. 4 is configured to include a single inlet pipe 211, a single main discharge pipe 212, and one or more auxiliary discharge pipes 213 that are opened and closed by a valve, so that the compressor It is a device that quantitatively separates gases such as exhaust gas compressed and transferred from (200) as needed.

That is, as shown in FIG. 4, the single-flow vortex tube 10 of the present invention is connected to the main discharge pipe 212 of the distributor 210, and in addition, one or more auxiliary discharge pipes 213 are connected to the opposing discharge pipe 213. The auxiliary vortex tube 220, which is composed of a flow-type vortex tube or a single-flow vortex tube 10, is connected so that gases such as exhaust gas discharged from the distributor 210 can be separated and processed according to temperature.

And the control unit automatically opens and closes the valve of the auxiliary discharge pipe 213 according to the amount of gas flowing into the distributor 210, thereby preventing overload of the single-flow type vortex tube 10 and simultaneously controlling the single-flow type vortex tube ( 10) The separation efficiency for gases such as exhaust gas can be improved compared to when used alone.

Accordingly, one or more measurement sensors 214 may be provided on the inlet pipe 211 side of the distributor 210 for the purpose of measuring the flow rate of gas flowing into the inside, and the auxiliary discharge pipe 213 may be provided with automatic opening and closing of the valve. A device such as an actuator or a motor may be provided for the purpose, and the control unit may control the device such as an actuator or a motor by selecting whether to use the auxiliary vortex tube 220 according to the flow rate of the measured gas. .

At this time, the control unit operates the valve so that the main discharge pipe 212 of the distributor 210 is opened independently when the gas flow rate measured by the measurement sensor 214 is below the first set value, which is a preset minimum value. It is possible to control or maintain the current state so that all gas flowing into the distributor 210 is transferred only to the single-flow type vortex tube 10.

In addition, the control unit controls the main discharge pipe 212 of the distributor 210 when the gas flow rate measured by the measurement sensor 214 is between the first set value, which is a preset minimum value, and the second set value, which is a preset intermediate value. ) and some of the auxiliary discharge pipes 213 are controlled to be in an open state or the current state is maintained so that part of the gas flowing into the distributor 210 is transferred to the single-flow vortex tube 10, and other Some may be transferred to the auxiliary vortex tube (220).

At this time, depending on the number of auxiliary discharge pipes 213 provided in the distributor 210, the section between the first set value and the second set value may be further divided into multiple sections, and the gas flow rate corresponding to each section As this is detected, the number of auxiliary discharge pipes 213 opened by the control unit may change.

In addition, the control unit opens the main discharge pipe 212 and all auxiliary discharge pipes 213 of the distributor 210 when the gas flow rate measured by the measurement sensor 214 is greater than the second set value, which is a preset intermediate value. By controlling the valve to maintain the current state or maintaining the current state, the gas flowing into the distributor 210 can be evenly distributed and transferred throughout the single-flow type vortex tube 10 and the auxiliary vortex tube 220.

In this way, the present invention is a gas such as exhaust gas generated by combustion or mixed gas discharged in the process of producing hydrogen by using the single-flow type vortex tube (10) alone or the single-flow type vortex tube (10) and the auxiliary vortex tube (220). By allowing pretreatment in the process, the purification efficiency of fine dust, etc. in the subsequent process can be greatly improved.

The embodiments introduced above are provided as examples so that the technical idea of the present invention can be sufficiently conveyed to those skilled in the art to which the present invention pertains, and the present invention is limited to the embodiments described above. It is not limited and may be embodied in other forms.

In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and in the drawings, the width, length, thickness, etc. of components may be exaggerated or reduced for convenience.

Additionally, like reference numerals refer to like elements throughout the specification.

A single-flow vortex tube with improved gas separation performance and a gas separation system using the same can further improve the gas separation performance by the vortex effect, and as a result, the temperature of the gas discharged to the outside can be lowered. Because the effect occurs, it has sufficient industrial applicability.

Claims

In a uni-flow vortex tube that separates and discharges gas according to temperature,

An inlet 101 is formed on one side, an outlet 102 is formed on the other side, and a contraction section 103 in which the entire volume, including the internal transport path connecting the inlet 101 and the outlet 102, is contracted. A main housing (100) in which an over-diffusing diffusion section (104) is continuous along the longitudinal direction;

A vortex generator 110 that causes the gas transported at high pressure and flowing into the inlet 101 of the main housing 100 to form a vortex and be transported along the internal transport path; and,

A control valve 120 installed on the outlet 102 side of the main housing 100 to separate the gas transported along the internal transfer path according to temperature and discharge it to the outside; A single-flow vortex tube with improved gas separation performance, comprising:
According to paragraph 1,

The main housing 100 is,

A single-flow vortex tube with improved gas separation performance, characterized in that it is asymmetrical in that the length of the diffusion section (104) is more than twice as long as the length of the contraction section (103).
According to paragraph 1,

The main housing 100 is,

A single-flow vortex tube with improved gas separation performance, characterized in that one or more discharge pipes (105) are formed to protrude in an inclined direction on the outer peripheral surface of the diffusion section (104).
A compressor (200) that compresses gas and transfers it at high speed through a transfer pipe;

It is configured to include a single inlet pipe 211, a single main discharge pipe 212, and one or more auxiliary discharge pipes 213 that are opened and closed by a valve, so that the high-pressure gas transferred from the compressor 200 is adjusted according to the flow rate. Distributor 210 for discharging through one or more paths;

Auxiliary vortex tubes 220 connected to the one or more auxiliary discharge pipes 213 one by one to separate and discharge the supplied gas according to temperature; and,

a control unit (not shown) that automatically opens and closes the valve of the auxiliary discharge pipe 213 according to the amount of gas flowing into the distributor 210; A gas separation system using a single-flow vortex tube with improved gas separation performance, comprising: