CN108722027B

CN108722027B - Inertial separation device and liquid collector thereof

Info

Publication number: CN108722027B
Application number: CN201810840720.7A
Authority: CN
Inventors: 王志强; 陈鸿
Original assignee: Wisdom Energy Technology Co Ltd
Current assignee: Wisdom Energy Technology Co Ltd
Priority date: 2018-07-27
Filing date: 2018-07-27
Publication date: 2023-09-19
Anticipated expiration: 2038-07-27
Also published as: CN108722027A

Abstract

The inertial separation device provided by the application can be used for separating gas and liquid in a gas-liquid mixing medium, and comprises a flow director, a liquid collector, a liquid outlet channel and an air outlet channel. The air outlet channel and the liquid outlet channel are respectively communicated with the inner cavity of the liquid collector and are used for respectively outputting separated gas and liquid. The liquid collector is arranged around the periphery of the flow director, the liquid collector is provided with a mixed medium inlet for receiving the gas-liquid mixed medium, and the mixed medium inlet is arranged around the periphery of the flow director.

Description

Inertial separation device and liquid collector thereof

Technical Field

The present application relates to an inertial separation device, and more particularly, to an inertial separation device for separating gas and liquid.

Background

In existing inertial separators, centrifugal forces generated by the swirling flow of the two-phase fluid cause the liquid phase component to spread radially outwardly to impinge on the cylindrical inner wall surface of the vessel, forming droplets, which are discharged through respective outlets, and the remaining gas phase exits the vessel through a separate outlet. The degree of gas-liquid separation is largely dependent on the geometry of the vessel and its hydrodynamic characteristics. Since centrifugal force is largely dependent on the radius and inner diameter of the vessel and the flow rate of the two-phase fluid, an increase in the separation efficiency of the gas-liquid two phases generally requires an increase in the size of the apparatus. But in some applications where installation space is limited, smaller equipment sizes are often required.

Disclosure of Invention

In view of the above, the present application provides an inertial separator device that can improve the separation efficiency with a compact size.

The application also provides a liquid collector of the inertial separation device, which can improve the separation efficiency under the condition of compact size.

In an embodiment, the inertial separation device comprises a cylinder, the cylinder comprises a mixed medium input end and an air outlet end, the fluid director is located in the cylinder, a mixed medium input channel is formed between the mixed medium input end and the fluid director, the air outlet channel is formed between the fluid director and the air outlet end, and the fluid trap is arranged around the wall of the cylinder.

In an embodiment, the fluid director includes a guiding cone and a guiding vane, the guiding cone includes a guiding cone base body and a mixing medium guiding cone portion extending from the guiding cone base body towards the mixing medium input end, the guiding vane is disposed on a surface of one side of the guiding cone base body towards the mixing medium input end, the guiding vane is disposed at a periphery of the guiding cone base body, the guiding cone further includes a gas guiding cone portion extending from the guiding cone base body towards the air outlet end, and the gas guiding cone portion and the mixing medium guiding cone portion are identical in appearance and are symmetrically disposed.

In an embodiment, the guide vanes are provided as individually detachable components.

In an embodiment, the cylinder body comprises a first cylinder body and a second cylinder body which are in butt joint, the flow guide cone is fixed at one end part of the first cylinder body facing the second cylinder body, and the liquid collector is fixed at one end part of the second cylinder body facing the first cylinder body.

In one embodiment, the liquid outlet channel is communicated with the air outlet channel by an air duct.

In one embodiment, the inertial separator device comprises a barrel including a mixed media input and an outlet, the flow director being positioned within the barrel, a mixed media input channel being formed between the mixed media input and the flow director, the outlet being formed between the flow director and the outlet, the cavity of the liquid trap being an open loop having a cavity first end and a cavity second end, the outlet channel being connected to the cavity second end, the liquid trap having an extension path from the cavity first end toward the cavity second end, the cross-sectional area of the cavity increasing gradually over the extension path, the material of the liquid trap being curved in a direction around the extension path to form the cavity, the liquid trap having a first edge portion and a second edge portion along the extension path, the first edge portion and the second edge portion being unbonded to form an annular gap between the first edge portion and the second edge portion, the flow guide cone and the first edge portion forming a gas outlet, the gas outlet communicating with the outlet.

In one embodiment, the second edge is provided with a blocking portion continuing to bend in a direction surrounding the extension path for blocking the liquid from flowing out of the cavity from the slit.

In an embodiment, the inertial separation device is provided with a plurality of liquid collectors in the circumferential direction of the cylinder, and each liquid collector is communicated with one liquid outlet channel.

In another aspect, the present application provides a liquid trap for an inertial separation device, the liquid trap having an interior chamber. The inner cavity is an open ring and is provided with an inner cavity first end and an inner cavity second end, the inner cavity second end is used as an outlet of separated liquid, the liquid collector is provided with an extension path from the inner cavity first end to the inner cavity second end, the material of the liquid collector is bent along the direction surrounding the extension path to form the inner cavity, the liquid collector is provided with a first edge part and a second edge part along the first extension path, the first edge part and the second edge part are not connected, so that an annular gap is formed between the first edge part and the second edge part, and the annular gap is used as an inlet of the gas-liquid mixing medium and an outlet of separated gas.

In an embodiment, the cross-sectional area of the inner cavity gradually increases along the extending path, and the second edge is provided with a blocking part which continues to bend along the direction surrounding the extending path and is used for blocking the liquid from flowing out of the inner cavity from the gap.

In summary, the present application provides an inertial separator, which is different from a conventional cylindrical liquid collector in that an annular liquid collector is provided, so that the size of the device is significantly reduced. In some embodiments, through setting up the same water conservancy diversion awl of both sides appearance and setting up the stator as the separately detachable part, just can realize going up the air inlet or going down the air inlet through changing stator mounted position, a equipment can satisfy multiple application scenario. In addition, through setting up the air duct between liquid outlet channel and air outlet channel, effectively improve the flow velocity in the liquid trap to effectively improve separation efficiency.

Drawings

FIG. 1 is a perspective assembly view of one embodiment of an inertial separation device.

Fig. 2 is an exploded perspective view of the inertial separation device of fig. 1.

Fig. 3 is another angular exploded view of the inertial separation device of fig. 1.

Fig. 4 is a schematic exploded view in cross section of the inertial separation device of fig. 1.

Fig. 5 is a cross-sectional view of the inertial separation device of fig. 1.

Fig. 6 is a partial enlarged view of fig. 5.

Fig. 7 is a perspective combination view of another embodiment of an inertial separation device.

Fig. 8 is a top view of fig. 7.

Detailed Description

Before the embodiments are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The application is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of the terms "comprising," "including," "having," and the like are intended to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present application is not limited to the number of the element as one, but may include a plurality of the elements.

Fig. 1 is a perspective combined view of an embodiment of an inertial separation device, fig. 2-4 are exploded schematic views of the inertial separation device of fig. 1, fig. 5 is a cross-sectional view of the inertial separation device of fig. 1, and fig. 6 is a partial enlarged view of fig. 5.

The inertial separation device comprises a cartridge 10, the cartridge 10 including a mixed media input 12 and an output 14. A deflector 16 is located within the barrel 10. A mixed media inlet channel 18 is formed between the mixed media inlet 12 and the flow director 16, and the outlet channel 20 is formed between the flow director 16 and the outlet 14. The inertial separation device further includes a liquid trap 22. The flow director 16 is used for guiding the gas-liquid mixing medium into the inner cavity 24 of the liquid collector 22 from the periphery of the flow director 16, and the air outlet channel 20 and the liquid outlet channel 28 are respectively communicated with the inner cavity 24 of the liquid collector 22 and are used for respectively outputting separated gas and liquid.

In the illustrated embodiment, the cartridge 10 includes a first cartridge body 30 and a second cartridge body 32 that are in butt-joint. In the illustrated embodiment, the first and second barrel portions 30, 32 are provided with abutting flanges 34, 36, respectively.

The deflector 16 is fixed to an end of the first cylindrical body 30 facing the second cylindrical body 32, i.e. the end where the flange 34 is provided. In the illustrated embodiment, the first barrel 30 is provided with a mount 38 at an end thereof. A gap 40 is formed between the fixing frame 38 and the wall of the first cylindrical body 30, and the gap 40 communicates with the air outlet channel 20.

The deflector 16 includes a deflector cone 42 and vanes 44. The cone 42 includes a cone body 46 and a mixing medium cone portion 48 extending from the cone body 46 toward the mixing medium input end 12. In the illustrated embodiment, the flow cone 42 further includes a gas flow cone portion 50 extending from the flow cone base 46 toward the outlet end 14. The guide vanes 44 are arranged on a side surface of the cone body 46 facing the mixing medium input 12, said guide vanes 44 being located at the periphery of said cone body, whereby the gas-liquid mixing medium is guided from the periphery of said deflector 16 into the inner chamber 24 of the liquid collector 22. In this embodiment, the gas guiding cone 50 is identical to the mixing medium guiding cone 48 in shape and symmetrically arranged. If the vanes are formed as a single removable part, the same set of equipment can be used to accommodate both the upper and lower end feeds of the mixed media. As long as the guide vane 44 is provided on the upper surface or the lower surface of the guide cone 42 according to actual conditions, the remaining components need not be changed. Of course, it should be understood that it is also possible to provide the mixing medium flow cone 48 only on the side facing the mixing medium input 12, and not to provide the gas flow cone 50 on the other side. Alternatively, the profile of the diversion cones 48, 50 on both sides may not be uniform.

A liquid trap 22 is disposed around the periphery of the deflector 16. In the illustrated embodiment, the liquid trap 22 is disposed around the wall of the cartridge 10. More specifically, the liquid trap 22 is fixed to an end of the second cylindrical body 32 facing the first cylindrical body 30, that is, an end where a flange 36 is provided. In the illustrated embodiment, the liquid trap 22 is secured to the second barrel portion 32, and the flange 36 is secured to the liquid trap 22.

The cavity 24 of the accumulator 22 is an open loop having a cavity first end 52 and a cavity second end 54. The outlet passage 28 is connected to the second end 54 of the chamber. The accumulator 22 has an extension path from the first end 52 of the cavity toward the second end 54 of the cavity. In the illustrated embodiment, the cross-sectional area of the lumen 24 (i.e., the cross-section perpendicular to the extended path) gradually increases over the extended path. The mixing medium is continuously introduced from the flow director 16 into the interior chamber 24 and, due to the internal pressure, the separated gas and liquid will be discharged from the outlet channel and the outlet channel, respectively, along respective paths. For liquid and solid phase materials, the flow will be from one end of small cross section to one end of large cross section as a whole. The gas-liquid separation process is further described below: under the action of inertial force, the gas-liquid mixed medium is subjected to turbulence condensation on the relevant surface when passing through the guide cone and the blades, so that gas-liquid separation is formed, and the gas-liquid mixed medium enters the liquid collecting cavity, and respectively enters the gas outlet channel and the liquid outlet channel under the action of internal pressure and gravity. The surface of the root of the diversion cone is provided with a non-smooth surface, so that turbulent flow condensation is generated, and the gas-liquid separation efficiency can be improved.

The liquid trap 22 may be wound from a single sheet or may be cast. If formed by winding, the material of the accumulator 22 is bent in a direction around the extension path to form the cavity 24. The accumulator 22 has a first edge portion 56 and a second edge portion 58 along the extension path, the first edge portion 56 and the second edge portion 58 not being joined, thereby forming an annular gap 60 between the first edge portion and the second edge portion, a gas outlet 62 being formed between the deflector 16 and the first edge portion 56, the gas outlet 62 being in communication with the gap 40 and the outlet channel 20. The gap 60 serves as a mixing medium inlet for receiving the gas-liquid mixing medium and is disposed around the periphery of the deflector 16.

To further block liquid from exiting the cavity 24 through the gap 60, the second edge portion 58 continues to bend in a direction around the path of extension to form a barrier 64 that blocks out liquid and/or solids.

In operation, the mixing medium enters the cartridge 10 from the mixing medium input 12 and flows along the mixing medium input channel 18, and the mixing medium passes circumferentially of the deflector 16 through the slit 60 of the sump 22 and into the interior cavity 24 of the sump 22 by virtue of the guiding action of the vanes 44. The mixing medium flows along the inner wall of the liquid trap 22, and the fluid flowing to the second edge portion 58 is blocked by the blocking portion 64, so that the solids and liquid in the fluid cannot leave the inner cavity 24 from the second edge portion 58, and most of the solids and liquid can only flow toward the inner cavity second end 54 with a larger cross section, and then be discharged from the liquid outlet channel 28 out of the cylinder 10. The separated gas is forced by the internal pressure to exit the cartridge 10 from the gap 60 of the liquid trap 22, through the gas outlet 62, through the gap 40 and into the gas outlet channel 20. Thus, the gap 60 serves as both an inlet for the mixing medium and an outlet for the separated gas.

The present application also proposes a structure that increases the flow rate of the fluid in the liquid trap 22. The outlet channel 28 communicates with the outlet channel 20 by means of an air duct 66. Since a small amount of gas is discharged from the liquid outlet channel 28 together with the liquid, the gas increases the discharge pressure of the liquid outlet channel 28. By providing the air duct 66 to direct the portion of the air to the air outlet passage 20 for discharge, the discharge pressure of the liquid outlet passage is effectively reduced, thereby increasing the liquid discharge rate and thus the flow rate in the liquid trap 22. Increasing the flow rate of the fluid within the accumulator 22 facilitates the coalescing of the liquid, thereby achieving a more efficient separation effect. Different mixed media may have different optimal flow rates, so that an adjusting valve can be arranged on the air guide pipe 66 to adjust the air guide amount so as to adapt to different working conditions.

In the above embodiment, the inertial separation device is provided with a liquid trap 22 in the circumferential direction of the cylinder, only one liquid outlet channel 28 being connected to the liquid trap 22, the liquid trap 22 substantially surrounding the circumference of the cylinder 10 and the deflector 16. In the embodiment shown in fig. 7 and 8, the inertial separation device is provided with four liquid traps 22 in the circumferential direction of the bowl 10, each liquid trap 22 being in communication with one liquid outlet channel 28. At this point, each liquid trap 22 encircles only one quarter of the circumference of the bowl 10 and deflector 16. Of course, the number of the liquid trap 22 and the liquid outlet channel 28 may be determined according to practical situations, such as the amount of the mixed medium to be treated.

The above embodiments use the term "annular" or "circumferential" which does not limit the necessity of the liquid trap 22 to surround the entire circumference, but only the portion around the circumference is also considered to be the circumference as proposed by the present application. In addition, the term "open loop" as used in the above embodiments means that the ends of a loop do not communicate to form a closed loop, such as in the above embodiments where the smaller section lumen first end 52 does not communicate with the larger section lumen second end 54. Furthermore, although the inertial separation device is described in the present application for separating the gas and the liquid in the mixed medium, the mixed medium may contain a gas phase, a liquid phase and a solid phase, and the solid phase is generally discharged from the liquid outlet channel 28 together with the liquid phase. For simplicity of description in the embodiments and claims, only the liquid and gas separation is described, and the channels for discharging the liquid phase and the solid phase are collectively referred to as the liquid outlet channel 28, but it should be understood that the liquid outlet channel 28 may discharge the solid phase substance or the liquid may be mixed with the solid phase substance, depending on the composition of the substances in the mixed medium.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed are illustrative and not restrictive. The scope of the application is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The inertial separation device comprises a flow director, a liquid collector, a liquid outlet channel and an air outlet channel, wherein the flow director is used for guiding a gas-liquid mixed medium into an inner cavity of the liquid collector from the periphery of the flow director, the air outlet channel and the liquid outlet channel are respectively communicated with the inner cavity of the liquid collector and are used for respectively outputting separated gas and liquid; the inner cavity of the liquid collector is an open ring and is provided with an inner cavity first end and an inner cavity second end, the liquid outlet channel is connected with the inner cavity second end, the liquid collector is provided with an extension path from the inner cavity first end to the inner cavity second end, the cross section area of the inner cavity is gradually increased along the extension path, the material of the liquid collector is bent along the direction encircling the extension path to form the inner cavity, the liquid collector is provided with a first edge part and a second edge part along the extension path, the first edge part and the second edge part are not connected, an annular gap is formed between the first edge part and the second edge part, a gas outlet is formed between the liquid guider and the first edge part, and the gas outlet is communicated with the air outlet channel.

2. The inertial separation device of claim 1, wherein the inertial separation device comprises a barrel including a mixed media input and an outlet, the flow director being positioned within the barrel, a mixed media input channel being formed between the mixed media input and the flow director, the outlet being formed between the flow director and the outlet, the liquid trap being disposed around the barrel wall.

3. The inertial separation device of claim 2, wherein the deflector comprises a deflector cone and a vane, the deflector cone comprising a deflector cone base and a mixing medium deflector cone portion extending from the deflector cone base toward the mixing medium input, the vane being disposed on a side surface of the deflector cone base toward the mixing medium input, the vane being disposed on a periphery of the deflector cone base, the deflector cone further comprising a gas deflector cone portion extending from the deflector cone base toward the outlet, the gas deflector cone portion being of uniform shape and symmetrically disposed with respect to the mixing medium deflector cone portion.

4. The inertial separator according to claim 2 wherein said barrel comprises a first barrel portion and a second barrel portion, said deflector being secured to an end of said first barrel portion facing said second barrel portion, said liquid collector being secured to an end of said second barrel portion facing said first barrel portion.

5. The inertial separator according to claim 4 wherein said outlet channel communicates with said outlet channel by means of an air duct.

6. An inertial separation device according to claim 1, wherein the second edge portion is provided with a blocking portion continuing to bend in a direction around the extension path for blocking liquid from flowing out of the cavity from the gap.

7. An inertial separator according to any one of claims 2 to 5, wherein the inertial separator is provided with a plurality of said liquid traps in the circumferential direction of the barrel, each liquid trap being in communication with one of said liquid outlet channels.

8. A liquid trap for an inertial separation device, said liquid trap having an interior chamber, said interior chamber being an open annulus having a first interior chamber end and a second interior chamber end, said second interior chamber end being an outlet for separated liquid, said liquid trap having an extension path from said first interior chamber end toward said second interior chamber end, said liquid trap material being curved in a direction around said extension path to form said interior chamber, said liquid trap having first and second edge portions along said extension path, said first and second edge portions being non-joined to form an annular gap between said first and second edge portions, said annular gap being an inlet for a gas-liquid mixing medium and an outlet for separated gas; the liquid collector is formed by winding a plate.

9. The liquid trap of claim 8, wherein the cross-sectional area of the cavity increases gradually over the extended path, and the second edge portion is provided with a blocking portion continuing to bend in a direction around the extended path for blocking liquid from flowing out of the cavity from the slit.