CN211913032U - Centrifugal gas-liquid two-phase separation device - Google Patents

Abstract

The application provides a centrifugal gas-liquid two-phase separator, includes: a working medium pipe; and the separation assembly is arranged in the working medium pipe and comprises at least one group of helical fins for guiding the working medium to form helical flow. The centrifugal gas-liquid two-phase separation device can realize gas-liquid two-phase separation of low-temperature fluid, has small required space, utilizes pipeline space, is flexible in layout, and solves the problem of low separation efficiency of the conventional low-temperature phase separation device.

Description

Centrifugal gas-liquid two-phase separation device

Technical Field

The utility model relates to a low temperature technical field to more specifically relates to a centrifugal gas-liquid double-phase separator.

Background

The existing gas-liquid two-phase separation devices are various in types, and the working principle mainly comprises gravity settling, baffling separation, centrifugal force separation, silk screen separation, ultrafiltration separation, filler separation and the like. Some phase separation devices for cryogenic fluids are available, but the devices are generally complex in structure, occupy a large space, and have the problem of low separation efficiency.

SUMMERY OF THE UTILITY MODEL

The centrifugal gas-liquid two-phase separation device has the advantages that the centrifugal force generated by the rotational flow of the cryogenic fluid in the centrifugal gas-liquid two-phase separation device is utilized to separate the liquid phase and the gas phase of the cryogenic fluid, the required space is small, the pipeline space is utilized, the layout is flexible, and the problem that the separation efficiency of the conventional cryogenic phase separation device is not high is solved.

The application provides a centrifugal gas-liquid two-phase separator includes: a working medium pipe; and the separation assembly is arranged in the working medium pipe and comprises at least one group of helical fins for guiding the working medium to form helical flow. The centrifugal gas-liquid two-phase separation device can realize gas-liquid two-phase separation of low-temperature fluid, has small required space, utilizes pipeline space, is flexible in layout, and solves the problem of low separation efficiency of the conventional low-temperature phase separation device.

In one embodiment, the separation assembly further comprises: a gas pipe coaxially disposed inside the working medium pipe and including a plurality of exhaust holes distributed along an axial direction; wherein the helical fin is disposed on an outer wall of the gas tube along an axial direction of the gas tube. Through this embodiment, can make the gaseous working medium that separates can get into in the gas pipe through the exhaust hole and flow out.

In one embodiment, the centrifugal gas-liquid two-phase separation device includes a plurality of sets of helical fins arranged in parallel or connected in series in the axial direction of the gas tube. By means of the embodiment, the working fluid can be sufficiently guided to spiral motion in the separation device, and the improvement of the separation efficiency is ensured.

In one embodiment, the centrifugal gas-liquid two-phase separation device further comprises a heat insulation pipe, wherein the working medium pipe is coaxially arranged inside the heat insulation pipe to form a heat insulation interlayer. This embodiment can achieve a heat insulating effect and ensure a separation effect.

In one embodiment, the thermally insulating interlayer is a vacuum layer, an air interlayer or a working medium interlayer.

In one embodiment, the insulating interlayer is filled with an insulating material.

In one embodiment, a first heat-insulating pipe and a second heat-insulating pipe are included, and the inner diameter of the first heat-insulating pipe is larger than the inner diameter of the second heat-insulating pipe. Through this embodiment, can further realize the thermal-insulated effect of separator inside and external world, reinforcing.

In one embodiment, a liquid pipe is coaxially provided between the working medium pipe and the gas pipe, and a plurality of drain holes are provided along an axial direction of the liquid pipe. Through this embodiment for in the separation process, liquid gets into the runner that liquid pipe and working medium pipe formed through the outage, and gas discharges through the exhaust hole inside the gas pipe, realizes the gas-liquid two-phase separation, does not contain liquid in the gas that obtains like this, also does not contain gas in the liquid, has promoted separation efficiency.

In one embodiment, the outer wall of the working tube is wrapped with a layer of insulating material.

In one embodiment, the separation assembly further comprises a gas tube coaxially disposed inside the working fluid tube, and the gas tube has a length less than the length of the working fluid tube. Through this embodiment, can make working medium fluid be guided by helical fin in the flow process of phase separator anterior segment and fully develop into the spiral flow, realized gas-liquid separation, at the flow process of phase separator back end, gaseous phase working medium gets into inside the gas pipe via gas pipe mouth of pipe and/or exhaust hole, and the liquid phase gets into the annular flow channel between working medium pipe and the gas pipe and flows.

In one embodiment, the separation assembly further comprises a liquid pipe disposed coaxially with the working medium pipe, and a plurality of drain holes are disposed along an axial direction of the liquid pipe. Through the implementation mode, the liquid-phase working medium can enter the flow channel formed by the liquid pipe and the working medium pipe through the liquid discharge hole, and the gas-phase working medium flows in the working medium pipe, so that gas-liquid two-phase separation is realized.

Compared with the prior art, the centrifugal gas-liquid two-phase separation device provided by the application separates the liquid phase and the gas phase of the low-temperature fluid by utilizing the centrifugal force generated by the rotational flow of the low-temperature fluid in the centrifugal gas-liquid two-phase separation device, has small required space, utilizes the space of a pipeline, is flexible in layout, and solves the problem that the separation efficiency of the existing low-temperature phase separation device is not high.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 is a schematic view showing the structure of a centrifugal gas-liquid two-phase separation apparatus according to an embodiment of the present application;

FIG. 2 is a schematic view showing the structure of a centrifugal gas-liquid two-phase separation apparatus according to an embodiment of the present application;

FIG. 3 shows a schematic structural view of a centrifugal gas-liquid two-phase separation device according to another embodiment of the present application;

FIG. 4 is a schematic view showing the structure of a centrifugal gas-liquid two-phase separation apparatus according to another embodiment of the present application;

FIG. 5 shows a schematic view of a centrifugal gas-liquid two-phase separation device according to another embodiment of the present application;

FIG. 6 is a schematic view showing the structure of a centrifugal gas-liquid two-phase separation device according to another embodiment of the present application;

fig. 7 shows a schematic view of the structure of a centrifugal gas-liquid two-phase separation device according to another embodiment of the present application.

List of reference numerals:

100-centrifugal gas-liquid two-phase separation device;

110-a working medium tube;

120-a gas pipe;

121-exhaust hole;

130-helical fins;

140-a thermally insulated pipe;

141-a first insulating tube;

142-a second insulated pipe;

150-a liquid tube;

151-drain hole.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

In the drawings, for the purpose of clarity, thick solid line arrows indicate the flow direction of the working fluid before separation, thin solid line arrows indicate the flow direction of the liquid-phase working fluid after separation, and thin dotted line arrows indicate the flow direction of the gas-phase working fluid after separation.

Fig. 1 is a schematic structural diagram of a centrifugal gas-liquid two-phase separation device 100 according to an embodiment of the present disclosure. As shown in fig. 1, the centrifugal gas-liquid two-phase separation device 100 includes a working tube 110 and a separation assembly (not shown) including a gas tube 120 and a helical fin 130. Wherein, the working medium tube 110 and the gas tube 120 are both in a circular tube structure, and the gas tube 120 is coaxially disposed inside the working medium tube 110, that is, the inner diameter of the working medium tube 110 is greater than the inner diameter of the gas tube 120, and the length of the gas tube 120 is greater than or equal to the length of the working medium tube, at least one set of helical fins 130 is disposed on the outer wall of the gas tube 120 along the axial direction of the gas tube 120, and thus is located in an annular space formed by the working medium tube 110 and the gas tube 120, and the annular space is used as a flow passage for working medium fluid during use. The gas pipe 120 has a plurality of through holes in the axial direction, which serve as gas vents 121 for the gas-phase working medium to flow through, i.e., the gas-phase working medium can enter the inside of the gas pipe 120 through the gas vents 121 and flow out.

In the using process, the gas-liquid two-phase low-temperature fluid enters the flow channel formed between the working medium tube 110 and the gas tube 120 and flows spirally under the guidance of the spiral fin 130, the centrifugal force difference between the gas and the liquid is large due to the large density difference between the gas and the liquid, the gas and the liquid are separated under the action of the centrifugal force, the gas is discharged into the gas tube 120 through the gas exhaust hole 121 and flows out of the gas tube 120, the liquid-phase working medium continuously flows out along the flow channel, and the gas-liquid two-phase separation is realized.

It should be understood herein that the gas phase working medium outlet of the gas pipe 120 should be at least flush with the liquid phase working medium outlet of the working medium pipe 110, and even may exceed the liquid phase working medium outlet, so as to ensure that the separated liquid phase working medium and gas phase working medium will not mix again.

Optionally, a single row of exhaust holes 121 may be arranged in the axial direction of the gas pipe 120, or a plurality of rows of exhaust holes 121 may be arranged, and the number and the aperture size of the exhaust holes 121 may be changed according to the separation requirement, so that the gas-phase working medium separated after the spiral flow can enter the gas pipe 120 through the plurality of exhaust holes 121 in time, and does not flow out along the annular flow channel with the liquid-phase working medium, thereby ensuring the separation effect.

Alternatively, the helical fins 130 and the gas tubes 120 may be formed in various manners, such as welding or integrally formed (e.g., cast) to reduce the difficulty of manufacturing the separating apparatus.

As shown in fig. 2, a plurality of sets of spiral fins (preferably two sets of spiral fins in fig. 2) are provided on the outer wall of the gas tube 120, and the plurality of sets of fins are arranged on the outer wall in parallel, i.e., the sets of supports are spaced apart by a certain distance, or the plurality of sets of spiral fins are connected in series. By the method, the fluid working medium can be fully guided to flow spirally under the condition that the total length and the total flow of the phase separation device are not changed, so that the separation of a liquid phase and a gas phase is realized, and the separation efficiency is higher.

Preferably, the fin spacing widths of the plurality of sets of fins are equal, so that the fluid working medium can fully and spirally move in the phase separation device 100, and fluid turbulence of the system is avoided. Of course, the fin spacing widths of the plurality of sets of fins may not be equal.

In another preferred embodiment of the present application, as shown in fig. 3, the length of gas tube 120 is less than the length of working substance tube 110, i.e. gas tube 120 is completely "contained" inside working substance tube 110. The gas-phase working fluid can enter the gas pipe 120 from the gas discharge hole 121 of the gas pipe 120 and the inlet located inside the working fluid pipe 110. The fluid is guided by the spiral fins 130 to fully develop into spiral flow in the flow process of the front section of the phase separation device, so that gas-liquid separation is realized, and gas-liquid two phases enter the inside and the outside of the gas pipe respectively in the flow process of the rear section of the phase separation device.

Of course, in the separation device 100 shown in fig. 3, the gas pipe 120 may also be provided with the exhaust holes 121, so that the gas-phase working medium can enter the gas pipe through the pipe opening of the gas pipe, and can also enter the pipe through the plurality of exhaust holes 121 on the gas pipe 120, thereby realizing the outflow of the gas-phase working medium.

Fig. 4 is another preferred embodiment of the present invention, a heat insulation pipe 140 is further sleeved outside the working medium pipe 110, that is, the inner diameter of the heat insulation pipe 140 is larger than the inner diameter of the working medium pipe 110, so as to ensure that the cryogenic fluid can be separated into a gas phase and a liquid phase under low environmental heat leakage, and prevent the cryogenic liquid phase from being vaporized in a large amount due to heat exchange with the external environment in the subsequent flowing process, thereby reducing the separation effect and affecting the application of the cryogenic liquid phase and the cryogenic gas phase in the subsequent equipment. The heat-insulating pipe 140 and the working medium pipe 110 form a heat-insulating interlayer, the interlayer can be vacuumized, an air interlayer can be adopted, and a gas part or/and a liquid part separated from the low-temperature fluid can be introduced into the interlayer, so that the cold energy contained in the interlayer is fully utilized. Of course, the insulating interlayer may be filled with an insulating material. Meanwhile, the heat insulation pipe can be eliminated, and the heat insulation material is only wrapped outside the working medium pipe.

In order to achieve a better heat insulation effect, a plurality of heat insulation pipes 140 may be sleeved outside the working medium pipe 110 in a radial direction, and a heat insulation interlayer may be formed between the plurality of heat insulation pipes 140. Preferably, as shown in fig. 5, the centrifugal gas-liquid two-phase separation device 100 may include two insulation pipes 140, i.e., a first insulation pipe 141 and a second insulation pipe 142, sleeved in a radial direction, and an inner diameter of the first insulation pipe 141 is larger than an inner diameter of the second insulation pipe 142. This can reduce the running cost while achieving a better heat insulating effect.

In another embodiment shown in fig. 6, a liquid pipe 150 is coaxially disposed between the working fluid pipe 110 and the gas pipe 120, and a plurality of drain holes 151 are disposed along an axial direction of the liquid pipe 150. Specifically, the helical fins 130 should be arranged between the liquid pipe 150 and the gas pipe 120, in the separation process, a liquid-phase working medium enters a flow channel formed by the liquid pipe 150 and the working medium pipe 110 through the liquid discharge holes 151, a gas-phase working medium is discharged into the gas pipe 120 through the gas discharge holes 121, gas-liquid two-phase separation is achieved, the obtained gas-phase working medium does not contain the liquid-phase working medium, the liquid-phase working medium does not contain the gas-phase working medium, and the separation efficiency is improved.

Similar to the arrangement of the exhaust holes 121, a single row of liquid discharge holes 151 may be provided in the axial direction on the liquid pipe 150, and a plurality of rows of liquid discharge holes 151 may also be provided, and the number and the size of the holes of the liquid discharge holes 151 may be changed according to the separation requirement, so that the liquid-phase working medium separated after the spiral can enter the liquid pipe 150 through the plurality of liquid discharge holes 151 in time, and does not pass through the exhaust holes 121 along with the gas-phase working medium, ensuring the separation effect.

In the embodiment shown in fig. 7, the separation assembly may also include only the liquid pipe 150, and a plurality of liquid discharge holes 151 are provided in the axial direction of the liquid pipe 150, so that after the working medium is separated into a gas-liquid two-phase working medium by the spiral motion, the liquid-phase working medium may enter the annular flow channel between the liquid pipe 150 and the working medium pipe 110 through the liquid discharge holes 151 and flow out, and the gas-phase working medium flows in the working medium pipe 110 and flows out.

In the centrifugal gas-liquid two-phase separation device 100 provided by the present application, the working fluid pipe 110, the gas pipe 120, the spiral fin 130, the heat insulating pipe 140, and the liquid pipe 150 may be made of the same material or different materials. Among them, the thermal insulation tube 140 is preferably made of a material excellent in thermal insulation performance. Preferably, the pipe is made of a metallic material or a polymeric material.

The application provides a centrifugal gas-liquid two-phase separator utilizes this centrifugal gas-liquid two-phase separator, can realize the gas-liquid two-phase separation of low temperature fluid, and required space is less, has utilized pipeline space, and the overall arrangement is nimble, has solved the not high problem of present low temperature phase separator separation efficiency.

It should be understood that although the present application has been described with reference to a low temperature fluid as an example, the vapor-liquid two-phase separation apparatus 100 is also applicable to the vapor-liquid two-phase separation of a normal temperature fluid or a high temperature fluid.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims (10)

1. A centrifugal gas-liquid two-phase separation device (100), comprising:

a working medium tube (110); and

the separation assembly is arranged inside the working medium pipe (110) and comprises at least one group of spiral fins (130) for guiding the working medium to form spiral flow.

2. The centrifugal gas-liquid two-phase separation device (100) according to claim 1, wherein the separation assembly further comprises:

a gas pipe (120) coaxially disposed inside the working medium pipe (110) and including a plurality of gas discharge holes (121) distributed along an axial direction;

wherein the spiral fin (130) is disposed on an outer wall of the gas tube (120) along an axial direction of the gas tube (120).

3. The centrifugal gas-liquid two-phase separation device (100) according to claim 2, comprising a plurality of sets of the helical fins (130), the plurality of sets of the helical fins (130) being arranged in parallel or connected in series in an axial direction of the gas tube (120).

4. The centrifugal gas-liquid two-phase separation device (100) according to claim 1 or 2, further comprising a heat insulating pipe (140), wherein the working fluid pipe (110) is coaxially disposed inside the heat insulating pipe (140) to form a heat insulating interlayer.

5. The centrifugal gas-liquid two-phase separation device (100) according to claim 4, wherein the thermal insulation interlayer is a vacuum layer, an air interlayer or a working medium interlayer.

6. The centrifugal gas-liquid two-phase separation device (100) according to claim 4, wherein the thermal insulation interlayer is filled with a thermal insulation material.

7. The centrifugal gas-liquid two-phase separation device (100) according to claim 6, comprising a first heat insulating pipe (141) and a second heat insulating pipe (142), wherein an inner diameter of the first heat insulating pipe (141) is larger than an inner diameter of the second heat insulating pipe (142).

8. The centrifugal gas-liquid two-phase separation device (100) according to claim 1 or 2, characterized in that a liquid pipe (150) is coaxially provided between the working fluid pipe (110) and the separation assembly, and a plurality of drain holes (151) are provided along an axial direction of the liquid pipe (150).

9. The centrifugal gas-liquid two-phase separation device (100) according to claim 1, wherein the separation assembly further comprises a gas pipe (120) coaxially disposed inside the working substance pipe (110), and a length of the gas pipe (120) is smaller than a length of the working substance pipe (110).

10. The centrifugal gas-liquid two-phase separation device (100) according to claim 1, wherein the separation assembly further comprises a liquid pipe (150) disposed coaxially with the working fluid pipe (110), and a plurality of drain holes (151) are provided along an axial direction of the liquid pipe (150).

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