CN112212550A - Separator and balance system - Google Patents

Abstract

The invention provides a separator and a balance system. The separator includes: the shell is surrounded to form a channel, a first end of the channel is provided with a gas-liquid inlet, a second end of the channel is provided with a gas outlet, and the shell is provided with a liquid outlet communicated with the channel; the periphery of the diversion separation column is provided with a separation bulge, and the separation bulge is positioned on one side of the liquid outlet close to the gas-liquid inlet; the inlet blades are arranged at intervals along the periphery of the first end of the flow guiding separation column, and two ends of each inlet blade are respectively fixed on the outer wall of the first end of the flow guiding separation column and the inner wall of the gas-liquid inlet; and the outlet blades are arranged at intervals along the periphery of the second end of the flow guide separation column, and two ends of each outlet blade are respectively fixed on the outer wall of the second end of the flow guide separation column and the inner wall of the channel. The separator can separate liquid in the refrigerant, effectively prevent the liquid refrigerant from entering the impeller, prevent the liquid impact phenomenon of the compressor and ensure the safe operation of the compressor.

Description

Separator and balance system

Technical Field

The invention relates to the technical field of compression devices, in particular to a separator and a balance system.

Background

With the popularization of the application of the falling film evaporator, the application of the centrifugal water chiller to the falling film evaporator is more and more extensive. However, the use of falling-film evaporators with large cold stages involves the risk of entrainment. If the inlet of the compressor has the function of preventing liquid from directly entering the impeller, the safe operation of the compressor is more facilitated.

Disclosure of Invention

The invention mainly aims to provide a separator and a balance system to solve the problem of liquid carrying risk of a compressor in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a separator comprising: the gas-liquid separation device comprises a shell, a gas-liquid separation device and a gas-liquid separation device, wherein the shell is surrounded to form a channel, a first end of the channel is provided with a gas-liquid inlet, a second end of the channel is provided with a gas outlet, and the shell is provided with a liquid outlet communicated with the channel; the flow guide separation column is arranged in the channel and extends along the axis direction of the channel, a separation bulge is arranged on the periphery of the flow guide separation column, and the separation bulge is positioned on one side of the liquid outlet close to the gas-liquid inlet; the inlet blades are arranged at intervals along the periphery of the first end of the flow guide separation column, and two ends of each inlet blade are respectively fixed on the outer wall of the first end of the flow guide separation column and the inner wall of the gas-liquid inlet; and the outlet blades are arranged along the periphery of the second end of the flow guide separation column at intervals, and two ends of each outlet blade are respectively fixed on the outer wall of the second end of the flow guide separation column and the inner wall of the channel.

Further, the perpendicular projection of the inlet blade on the outer wall surface of the flow guide separation column comprises a first plane section and a first curved surface section, the first plane section extends along the axial direction of the flow guide separation column, the first curved surface section is in smooth transition with the first plane section, and an included angle alpha between a tangential line at the tail end of the first curved surface section and the first plane section is 10 degrees to 45 degrees.

Further, the vertical projection of the outlet blade on the outer wall surface of the flow guiding separation column comprises a second plane section and a second curved surface section, the second curved surface section extends along the axial direction of the flow guiding separation column, the second curved surface section and the second plane section are in smooth transition, and an included angle beta between a tangential line of the tail end of the second curved surface section and the second plane section is 15-50 degrees.

Further, the first curved surface section and the second curved surface section are bent in opposite directions.

Furthermore, one end of the gas-liquid inlet, which is far away from the gas outlet, is provided with a first flow guide inclined plane, and an included angle theta between the first flow guide inclined plane and the channel is 10-20 degrees.

Furthermore, the diversion separation column further comprises an arc curved surface section, a front cylindrical section, a rear cylindrical section and a second diversion inclined surface, the arc curved surface section is located at the first end of the diversion separation column, the separation bulge is located between the front cylindrical section and the rear cylindrical section, and the second diversion inclined surface is located at the second end of the diversion separation column.

Further, the outer diameter of the flow guiding separation column is d, the width of the arc curved surface section along the axial direction of the flow guiding separation column is h, and d/h is 0-2.

Further, the separation protrusion is a hemispherical protrusion.

Further, the shell comprises a first shell section and a second shell section, the flow guide separation column is located in the first shell section, the outer diameter of the second shell section is smaller than the inner diameter of the first shell section, the first end of the second shell section is located inside the first shell section, the second shell section is connected with the first shell section through a plurality of connecting ribs arranged at intervals, and the liquid outlet is formed between every two adjacent connecting ribs.

Further, the cross section of the liquid outlet is fan-shaped.

Further, the separator also comprises a driving device and an adjusting blade, the adjusting blade is rotatably mounted inside the second housing section, the driving device is in driving connection with the adjusting blade, and the rotating angle of the adjusting blade is-5 degrees to 100 degrees.

Further, the adjusting blade comprises a blade handle and a blade part, the blade handle penetrates through the second casing section and is connected with the driving device, the blade part is arranged in a sector shape, an extension line of the blade handle divides the blade part into an area A and an area B, and the ratio B/A of the area A and the area of the area B is 0.2-0.3.

Furthermore, one end of the gas outlet close to the gas-liquid inlet is a conical opening, one end of the gas outlet far away from the gas-liquid inlet is a cylindrical opening, and the smaller end of the conical opening is connected with the cylindrical opening.

Further, the separator still includes the regulation casing, the regulation casing encloses and establishes the formation cavity, the first end of regulation casing have with the water conservancy diversion mouth of cavity intercommunication, the shell is installed in the cavity, the gas-liquid import with the water conservancy diversion mouth is connected.

Furthermore, one side of the diversion port, which is close to the cavity, is provided with a sinking groove, the first end of the shell is provided with a connecting flange, and the connecting flange is fixed in the sinking groove through a connecting piece.

Further, the inner wall surface of the diversion port is provided with a third diversion inclined surface, and an included angle gamma between the third diversion inclined surface and the axis of the channel is 10-20 degrees.

According to another aspect of the present invention there is provided a balance system comprising a separator as described above.

Further, the balancing system further comprises a compressor comprising an impeller, the gas outlet of the separator being in communication with a front end inlet of the impeller; the balance system further comprises a first pipeline, an oil mist separation device, an oil tank, a second pipeline and a third pipeline, wherein two ends of the first pipeline are respectively connected with a tail end cavity of the impeller and the second pipeline, two ends of the second pipeline are respectively connected with an inlet of the oil mist separation device and an air outlet of the oil tank, two ends of the third pipeline are respectively connected with an oil return port of the oil tank and an oil port of the oil mist separation device, and a gas pipeline of the oil mist separation device is connected with a cavity of the separator.

Further, a first control valve is arranged on the first pipeline.

Further, the compressor comprises an outlet duct, the cavity being connected to the outlet duct by a fourth duct.

Further, a flow regulating device is arranged on the fourth pipeline.

Furthermore, the front end of the separator is provided with an inlet pipeline, the balance system further comprises a controller and a detection assembly, the detection assembly is used for detecting the temperature of the cavity and the inlet pipeline, the controller is in control connection with the detection assembly and the flow regulating device, and the controller controls the flow regulating device according to the detection result of the detection assembly.

Further, the flow regulating device is an electronic expansion valve or a thermal expansion valve or a regulating valve or an electromagnetic valve.

Further, the detection assembly comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged at the inlet pipeline, the second temperature sensor is arranged at the cavity, the detection temperature of the first temperature sensor is T2, the detection temperature of the second temperature sensor is T1, the flow regulating device is opened at a first preset opening degree when T1-T2 is equal to 0 ℃, the flow regulating device is opened at a second preset opening degree according to temperature control when T1-T2 is equal to or less than 0.5 ℃, and the flow regulating device is closed when T1-T2 is greater than 0.5 ℃.

Further, a clearance passage is provided between the outlet end of the housing of the separator and the impeller.

Further, the width e of the clearance channel is 0.5mm to 2 mm.

When the technical scheme of the invention is applied and used, the separator is arranged at the front end of an impeller of a compressor, a refrigerant mixed with gas and liquid phases enters from a gas-liquid inlet, the refrigerant entering the separator can be organized under the action of inlet blades and then enters the channel, under the separation action of the separation bulge on the flow guide separation column, because the specific gravity of the liquid is larger than that of the gas, if the fluid contains the liquid, the liquid is separated outwards under the centrifugal force action of the separation bulge, at the moment, the liquid in the refrigerant can move along the tangential direction of the separation bulge and is transmitted to the outside of the shell from the liquid outlet, the gas in the refrigerant is continuously transmitted along the axial direction of the channel, and is transmitted to the impeller from the gas outlet after being reorganized by the outlet blades. Therefore, the separator can separate the liquid in the refrigerant, effectively prevent the liquid refrigerant from entering the impeller, prevent the liquid impact phenomenon of the compressor and ensure the safe operation of the compressor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 schematically illustrates a cross-sectional view of a separator of the present invention in connection with a compressor;

FIG. 2 schematically shows a cross-sectional view of a separator of the present invention;

FIG. 3 schematically illustrates a cross-sectional view of the front end of the adjustment housing of the present invention;

FIG. 4 schematically illustrates a perspective view of the separator of the present invention with the housing and internal structure thereof partially broken away;

FIG. 5 schematically illustrates a first cross-sectional view of the outer shell of the separator of the present invention and its internal structure;

FIG. 6 schematically illustrates a second cross-sectional view of the outer shell of the separator of the present invention and its internal structure;

FIG. 7 schematically illustrates a half-sectional view of the outer shell of the separator of the present invention and its internal structure;

FIG. 8 schematically illustrates a cross-sectional view of the structure of FIG. 7 after longitudinal dissection;

FIG. 9 schematically illustrates a front view of an adjusting blade of the present invention;

FIG. 10 schematically illustrates a vertical projection of an inlet vane of the present invention onto the outer wall surface of a flow directing separation column;

FIG. 11 schematically illustrates a vertical projection of an exit vane of the present invention onto the outer wall surface of a flow-guiding separation column;

FIG. 12 schematically illustrates a front view of the balancing system of the present invention after partial cutaway;

FIG. 13 schematically illustrates a front view of the balancing system of the present invention after the compressor and separator have been connected;

fig. 14 schematically shows a cross-sectional view of the adjusting housing of the invention at the location of the connection with the impeller.

Wherein the figures include the following reference numerals:

100. a separator; 110. a housing; 111. a channel; 112. a gas-liquid inlet; 1121. a first diversion inclined plane; 113. a gas outlet; 1131. a tapered mouth; 1132. a cylindrical port; 114. a liquid outlet; 115. a first housing section; 116. a second housing section; 117. connecting ribs; 118. a connecting flange; 120. a flow guiding separation column; 121. separating the protrusions; 122. a circular arc curved surface section; 123. a front cylindrical section; 124. a rear cylindrical section; 125. a second diversion inclined plane; 130. an inlet vane; 131. a first planar segment; 132. a first curved surface section; 140. an outlet vane; 141. a second curved surface section; 142. a second planar segment; 150. a drive device; 160. adjusting the blades; 161. a petiole; 162. a blade section; 1621. a region A; 1622. a region B; 170. a housing; 171. a cavity; 172. a flow guide port; 173. a third flow guiding inclined plane; 174. sinking a groove; 175. a second temperature sensor; 200. a compressor; 210. an impeller; 220. an outlet conduit; 300. a first conduit; 310. a first control valve; 400. an oil mist separator; 500. an oil tank; 600. a second conduit; 700. a third pipeline; 800. a fourth conduit; 900. a flow regulating device; 1100. an inlet duct; 1110. a clearance channel.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-11, a separator 100 is provided according to an embodiment of the present invention.

The separator 100 in this embodiment includes a housing 110, a guide flow separation column 120, inlet vanes 130, and outlet vanes 140.

Wherein, the housing 110 encloses to form a channel 111, a first end of the channel 111 is provided with a gas-liquid inlet 112, a second end of the channel 111 is provided with a gas outlet 113, and the housing 110 is provided with a liquid outlet 114 communicated with the channel 111; the diversion separation column 120 is arranged in the channel 111 and extends along the axial direction of the channel 111, the periphery of the diversion separation column 120 is provided with a separation bulge 121, and the separation bulge 121 is positioned on one side of the liquid outlet 114 close to the gas-liquid inlet 112; a plurality of inlet vanes 130 are arranged at intervals along the periphery of the first end of the flow guiding separation column 120, and two ends of each inlet vane 130 are respectively fixed on the outer wall of the first end of the flow guiding separation column 120 and the inner wall of the gas-liquid inlet 112; a plurality of outlet blades 140 are spaced along the outer circumference of the second end of the flow guiding separation column 120, and both ends of the outlet blades 140 are fixed on the outer wall of the second end of the flow guiding separation column 120 and the inner wall of the passage 111, respectively.

In actual use, the separator 100 is arranged at the front end of the impeller 210 of the compressor 200, the refrigerant mixed with gas and liquid phases enters from the gas-liquid inlet 112, the refrigerant entering the inside of the separator 100 can be organized through the action of the inlet blades 130, then enters the inside of the channel 111, under the separating action of the separating protrusions 121 on the flow guiding separating column 120, because the specific gravity of the liquid is larger than that of the gas, if the liquid is contained in the fluid, the liquid is separated outwards through the centrifugal force of the separating protrusions 121, at this time, the liquid in the refrigerant can move along the tangential direction of the separating protrusions 121 and is transmitted to the outside of the shell 110 from the liquid outlet 114, and the gas in the refrigerant continues to be transmitted along the axial direction of the channel 111, and is transmitted to the impeller 210 from the discharge port of the gas outlet 113 after being reorganized by the outlet blades 140. Therefore, the separator 100 of the present invention can separate the liquid in the refrigerant, effectively prevent the liquid refrigerant from entering the impeller 210, prevent the compressor 200 from liquid impact, and ensure the safe operation of the compressor 200.

As shown in fig. 1, fig. 2, fig. 4 and fig. 10, a perpendicular projection of the inlet vane 130 in this embodiment on the outer wall surface of the flow-guiding separation column 120 includes a first planar section 131 and a first curved section 132, the first planar section 131 extends along the axial direction of the flow-guiding separation column 120, the first curved section 132 is in smooth transition with the first planar section 131, and an included angle α between a tangential line of a terminal end of the first curved section 132 and the first planar section 131 is 10 ° to 45 °, for example, 20 °, 30 ° and 40 °. After the refrigerant mixed with gas and liquid enters the gas-liquid inlet 112 and passes through the structure of the inlet blade 130, the refrigerant can spirally move on the outer surface of the flow guiding separation column 120, and when the refrigerant flows to the separation protrusion 121, the refrigerant can be effectively separated from the liquid and discharged from the liquid outlet 114.

It should be noted that, the vertical projection of the inlet vane 130 on the outer wall surface of the guide flow separation column 120 in the present embodiment refers to a projection viewed from a direction parallel to the inlet vane 130 toward the outer wall surface of the guide flow separation column 120.

As shown in fig. 1, fig. 2, fig. 4 and fig. 11, a perpendicular projection of the outlet vane 140 on the outer wall surface of the guide flow separation column 120 includes a second planar section 142 and a second curved section 141, the second curved section 141 extends along the axial direction of the guide flow separation column 120, the second curved section 141 is smoothly transited to the second planar section 142, and a tangential line of a terminal end of the second curved section 141 is contracted to the second planar section 142 by an included angle β of 15 ° to 50 °, for example, 20 °, 30 ° or 40 °. After the gas-liquid mixed refrigerant flows to the separation protrusion 121 to be separated, the separated gas refrigerant can be reorganized by the outlet vane 140 and finally enters the compressor 200.

Similarly, the vertical projection of the outlet vane 140 on the outer wall surface of the guide flow separation column 120 in the present embodiment refers to a projection viewed from a direction parallel to the outlet vane 140 toward the outer wall surface of the guide flow separation column 120.

Preferably, the first curved surface section 132 and the second curved surface section 141 in the present embodiment have opposite bending directions, so as to reorganize the refrigerant after being organized by the inlet vane 130, so that the refrigerant can be continuously transmitted along the axial direction of the separator 100. Specifically, the tissue is organized according to the actual use requirement, and only the included angle β formed by the end tangential line of the second curved surface section 141 and the second planar section 142 needs to be adjusted. The outlet blades 140 in this embodiment can guide the airflow to flow out, and the airflow outlet direction of the outlet blades 140 of the separator 100 is an axial direction, so that the airflow is guided to flow uniformly along the axial direction.

Referring to fig. 5, an end of the gas-liquid inlet 112 away from the gas outlet 113 in the present embodiment has a first diversion inclined surface 1121, and an angle θ between the first diversion inclined surface 1121 and an axis of the channel 111 is 10 ° to 20 °, so as to facilitate introduction of the refrigerant into the gas-liquid inlet 112.

Referring to fig. 1 to 8, the flow guiding separation column 120 of the present embodiment further includes a curved arc section 122, a front cylindrical section 123, a rear cylindrical section 124, and a second flow guiding inclined plane 125, wherein the curved arc section 122 is located at a first end of the flow guiding separation column 120, the separation protrusion 121 is located between the front cylindrical section 123 and the rear cylindrical section 124, and the second flow guiding inclined plane 125 is located at a second end of the flow guiding separation column 120.

In the implementation, the inlet vane 130 is located at the outer periphery of the front cylindrical section 123, the outlet vane 140 is located at the outer periphery of the rear cylindrical section 124, so as to guide and organize the gas flow, and after the refrigerant is separated by the separation protrusion 121, the refrigerant enters the end of the channel 111 from the second guiding inclined plane 125 and flows out from the gas outlet 113.

Preferably, the guide flow separation column 120 has an outer diameter d, and the curved arc section 122 has a width h along the axial direction of the guide flow separation column 120, wherein d/h is 0 to 2, so as to guide the refrigerant into the channel 111.

The separation protrusion 121 is a hemispherical protrusion, which is convenient for separating the gas-liquid mixed refrigerant.

In operation, the inlet vanes 130 of the separator 100 of this embodiment direct the fluid flow from an axial direction to a vane outlet direction, and the gas flow is rotated along the front cylindrical section 123, and if the fluid contains a liquid, the liquid will be separated outwardly by centrifugal force due to the liquid having a higher specific gravity than the gas and passing through the separating protrusions 121.

When the fluid flows through the separation protrusion 121, the flow direction changes, and the gas having a smaller specific gravity is more easily changed in direction and enters the outlet vane 140 along the guide separation column 120. Due to the high specific gravity of the liquid, when the fluid flows over the highest point of the separation protrusion 121, the liquid will fly towards the liquid outlet 114 and exit the separator 100, avoiding the liquid refrigerant to enter the impeller.

The casing 110 comprises a first casing section 115 and a second casing section 116, the flow guiding separation column 120 is located in the first casing section 115, the outer diameter of the second casing section 116 is smaller than the inner diameter of the first casing section 115, the first end of the second casing section 116 is located inside the first casing section 115, the second casing section 116 and the first casing section 115 are connected through a plurality of connecting ribs 117 arranged at intervals, and a liquid outlet 114 is arranged between two adjacent connecting ribs 117. Preferably, the liquid outlet 114 is fan-shaped in cross-section. Of course, in other embodiments of the present invention, the liquid outlet 114 may be configured in a triangular or square shape or other shaped configuration.

Referring to fig. 2, one end of the gas outlet 113 close to the gas-liquid inlet 112 is a tapered opening 1131, one end of the gas outlet 113 far from the gas-liquid inlet 112 is a cylindrical opening 1132, and one end with a smaller opening of the tapered opening 1131 is connected with the cylindrical opening 1132, so that the gas refrigerant can be rapidly conveyed into the compressor 200. As the gas flow enters gas outlet 113, it is directed along tapered opening 1131 and cylindrical opening 1132, which become more and more uniform.

Referring to fig. 1 and 9, the separator 100 in this embodiment further includes a driving device 150 and an adjusting blade 160, the adjusting blade 160 is rotatably installed inside the second casing section 116, the driving device 150 is in driving connection with the adjusting blade 160, the rotating angle of the adjusting blade 160 is-5 ° to 100 °, when the separator 100 is actually used, the driving device 150 can be controlled according to the use requirement of the compressor 200, and further the adjusting blade 160 is driven to rotate, and when the adjusting blade 160 rotates, the gas flow rate and the flow direction of the gas outlet 113 can be adjusted.

The adjusting blade 160 in this embodiment includes a blade stem 161 and a blade portion 162, the blade stem 161 passes through the blade portion 162 and is connected to the second housing section 116 and the driving device 150, the blade portion 162 is disposed in a fan shape, and an extension line of the blade stem 161 divides the blade portion into an a region 1621 and a B region 1622, wherein a ratio B/a of an area of the a region 1621 to an area of the B region 1622 is 0.2 to 0.3.

Preferably, the driving device 150 in this embodiment is a driving motor, which is simple in structure and easy to implement.

Referring again to fig. 1 to 7, the separator 100 in this embodiment further includes an adjusting casing 170, the adjusting casing 170 encloses to form a cavity 171, a first end of the adjusting casing 170 has a diversion port 172 communicated with the cavity 171, the outer shell 110 is installed in the cavity 171, and the gas-liquid inlet 112 is connected to the diversion port 172. When the liquid in the channel 111 is separated from the liquid outlet 114 and enters the cavity 171 for practical use, the liquid refrigerant in the cavity 171 may be gasified and then sent to the compressor again.

For convenience of installation, the diversion opening 172 in this embodiment is provided with a sinking groove 174 at a side close to the cavity 171, and the first end of the housing 110 is provided with the connecting flange 118, and the connecting flange 118 is fixed in the sinking groove 174 by a connector. The connecting piece in the embodiment is a screw or a pin and the like.

The inner wall surface of the diversion port 172 in this embodiment has a third diversion inclined surface 173, and an included angle γ between the third diversion inclined surface 173 and the axis of the passage 111 is 10 ° to 20 °, so that the refrigerant can be uniformly and stably delivered into the diversion port 172.

In actual use, the front end of the separator 100 in this embodiment is provided with an inlet pipe 1100, and the inlet pipe 1100 is fixed to the front end of the adjustment housing 170 by bolts, so as to facilitate the refrigerant to be delivered into the separator 100.

After the refrigerant passes through the inlet pipe 1100, the air flow is disturbed and uneven, which has a large influence on the performance of the compressor. In the present embodiment, the inlet pipe 1100 is disposed at the front end of the separator 100, so that the liquid in the refrigerant can be separated, the flow state of the refrigerant can be changed to a desired state, and the efficiency of the compressor 200 can be improved.

Referring to fig. 1 to 14, according to another aspect of the present invention, there is provided a balance system comprising a separator 100, wherein the separator 100 is the separator 100 in the above embodiment.

The balancing system in this embodiment further includes a compressor 200, the compressor 200 includes an impeller 210, and the gas outlet 113 of the separator 100 is communicated with the front inlet of the impeller 210, so as to separate liquid in the refrigerant, and make the flow state of the refrigerant approach to a designed ideal state, thereby improving the efficiency of the compressor 200.

Referring to fig. 14 in fig. 12, the balancing system in this embodiment further includes a first pipe 300, an oil mist separator 400, an oil tank 500, a second pipe 600, and a third pipe 700, wherein two ends of the first pipe 300 are respectively connected to the end chamber of the impeller 210 and the second pipe 600, two ends of the second pipe 600 are respectively connected to the inlet of the oil mist separator 400 and the outlet of the oil tank 500, two ends of the third pipe 700 are respectively connected to the oil return port of the oil tank 500 and the oil port of the oil mist separator 400, and the gas pipe of the oil mist separator 400 is connected to the cavity 171 of the separator 100.

When the compressor works, the high-temperature and high-pressure refrigerant leaked from the tail end of the impeller 210 can be conveyed to the second pipeline 600 through the action of the first pipeline 300, the lubricating oil in the refrigerant can be separated through the action of the oil mist separation device 400 and then conveyed into the oil tank 500, and then the high-temperature and high-pressure refrigerant is conveyed into the cavity 171, so that the liquid refrigerator in the cavity 171 can be gasified conveniently, and the pressure difference of the compressor 200 can be balanced conveniently.

Preferably, the first pipe 300 of the present embodiment is provided with a first control valve 310 to facilitate control of the refrigerant entering the second pipe 600.

The compressor 200 in this embodiment includes an outlet pipe 220, and the cavity 171 and the outlet pipe 220 are connected by a fourth pipe 800. The fourth pipe 800 is provided with a flow rate adjusting device 900, and the fourth pipe 800 and the flow rate adjusting device 900 are used for conveniently conveying the high-temperature and high-pressure refrigerant output by the compressor 200 into the cavity 171 and gasifying the liquid refrigerant in the cavity 171.

In this embodiment, the air outlet of the oil tank 500 is connected to the second pipeline 600 by a flange, the second pipeline 600 is joined to the first pipeline 300 and then welded to the interface of the oil mist separator 400, and after being separated by the oil mist separator 400, the gas enters the cavity 171, so that the liquid refrigerator in the cavity 171 can be gasified, the pressure of the oil tank 500 can be balanced, and the air outlet pipe of the oil mist separator 400 is connected to the adjusting housing 170 by a flange. After being separated by the oil mist separator 400, the lubricating oil flows back to the oil tank 500 by gravity.

The balancing system in this embodiment further includes a controller (not shown) and a detection component, the detection component is used for detecting the temperature of the cavity 171 and the inlet pipe 1100, the controller is in control connection with the detection component and the flow regulating device 900, and the controller controls the flow regulating device 900 according to the detection signal transmitted by the detection component.

Preferably, the flow regulating device 900 in this embodiment is an electronic expansion valve or a thermal expansion valve or a regulating valve or a solenoid valve.

The sensing assembly in this embodiment includes a first temperature sensor (not shown) disposed at the inlet duct 1100 and a second temperature sensor 175 disposed at the cavity 171, the first temperature sensor having a sensing temperature of T2 and the second temperature sensor 175 having a sensing temperature of T1, the flow regulator 900 being opened at a first predetermined opening degree when T1-T2 is 0 ℃, the flow regulator 900 being opened at a second predetermined opening degree according to temperature control when T1-T2 is 0.5 ℃, and the flow regulator 900 being closed when T1-T2>0.5 ℃.

The liquid is separated and discharged into the cavity 171 through the separator 100 at the inlet of the compressor 200, the high temperature gas of the equilibrium system enters the cavity 171 to exchange heat with the separated liquid, the second temperature sensor 175 is installed in the cavity 171, and the flow rate of the high temperature gas in the fourth pipe 800 is controlled by the second temperature sensor 175.

A clearance channel 1110 is provided between the outlet end of the housing 110 of the separator 100 and the impeller 210. The heat exchanged gas enters the impeller 210 through the gap channel 1110, the gap channel 1110 is composed of a shroud end face of the impeller 210, a shroud sealing side face and a rear end face of the casing 110, and preferably, the width e of the gap channel 1110 is 0.5mm to 2 mm.

It can be appreciated from the above embodiments that the inlet vanes 130 of the separator 100 of the present invention direct the fluid flow from the axial direction to the outlet direction of the inlet vanes 130, and the gas flow can rotate along the front cylindrical section 123, and if the fluid contains liquid, the liquid will be separated outwards due to the centrifugal force, because the specific gravity of the liquid is greater than that of the gas. After the fluid passes through the separation protrusion 121, the flow direction changes, and the gas with a smaller specific gravity is easier to change direction, and enters the outlet blade 140 of the separator 100 along the guide separation column 120. Due to the high specific gravity of the liquid, when the fluid flows through the highest point of the separation protrusion 121, the liquid will fly to the position of the liquid outlet 114 and exit the casing 110, avoiding the liquid from entering the impeller 210.

The balance system of the invention can ensure the safe operation of the compressor 200, and the conveyed high-temperature gas enters the inlet of the compressor 200 to gasify the separated liquid; by adjusting the operating conditions of the temperature equalization system within the housing 170, complete vaporization of the separated liquid is ensured.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the separator can separate liquid, effectively prevent the liquid from entering the impeller and ensure the safe operation of the compressor. The separated liquid exists in the space enclosed by the regulating shell, and is gasified through heat exchange of high-temperature gas, and the gas after heat exchange enters the impeller to participate in refrigeration cycle. The high-temperature gas for heat exchange comes from the balance system.

The balance system has the function of balancing the pressure of the tail end chamber of the impeller of the compressor and the pressure of the oil tank with the pressure of the inlet of the compressor, so that the safe operation of the system is ensured. The temperatures in the end chamber of the impeller and the oil tank are higher than the inlet temperature of the compressor in the running process of the unit. The liquid separated by the separator may be heat exchanged with the portion of the gas. And monitoring the temperature in the regulating shell through a second temperature sensor, and heating by using high-temperature and high-pressure gas in the balance system if the temperature does not meet the specified requirement. The flow of the high-temperature and high-pressure gas in the balance system is controlled by an electronic expansion valve or an electromagnetic valve.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (26)

1. A separator (100), comprising:

the gas-liquid separation device comprises a shell (110), wherein the shell (110) is surrounded to form a channel (111), a first end of the channel (111) is provided with a gas-liquid inlet (112), a second end of the channel (111) is provided with a gas outlet (113), and the shell (110) is provided with a liquid outlet (114) communicated with the channel (111);

the flow guiding separation column (120) is arranged in the channel (111) and extends along the axial direction of the channel (111), a separation bulge (121) is arranged on the periphery of the flow guiding separation column (120), and the separation bulge (121) is positioned on one side, close to the gas-liquid inlet (112), of the liquid outlet (114);

the inlet blades (130) are arranged at intervals along the periphery of the first end of the flow guide separation column (120), and two ends of each inlet blade (130) are respectively fixed on the outer wall of the first end of the flow guide separation column (120) and the inner wall of the gas-liquid inlet (112);

the outlet blades (140) are arranged along the periphery of the second end of the flow guide separation column (120) at intervals, and two ends of each outlet blade (140) are fixed to the outer wall of the second end of the flow guide separation column (120) and the inner wall of the channel (111) respectively.

2. The separator (100) according to claim 1, wherein a perpendicular projection of the inlet vane (130) on the outer wall surface of the guide flow separation column (120) comprises a first planar section (131) and a first curved section (132), the first planar section (131) extends along the axial direction of the guide flow separation column (120), the first curved section (132) is in smooth transition with the first planar section (131), and an included angle α between a terminal tangential line of the first curved section (132) and the first planar section (131) is 10 ° to 45 °.

3. The separator (100) according to claim 2, wherein the perpendicular projection of the outlet vane (140) on the outer wall surface of the guide flow separation column (120) comprises a second planar segment (142) and a second curved segment (141), the second curved segment (141) extends along the axial direction of the guide flow separation column (120), the second curved segment (141) is in smooth transition with the second planar segment (142), and the angle β between the tangential line of the end of the second curved segment (141) and the second planar segment (142) is 15 ° to 50 °.

4. A separator (100) as claimed in claim 3, wherein the direction of curvature of said first curved section (132) and said second curved section (141) are opposite.

5. The separator (100) according to claim 1, wherein an end of the gas-liquid inlet (112) far from the gas outlet (113) has a first diversion inclined surface (1121), and an included angle θ between the first diversion inclined surface (1121) and the channel (111) is 10 ° to 20 °.

6. The separator (100) of claim 1, wherein the flow-directing separation column (120) further comprises a curved arc section (122), a front cylindrical section (123), a rear cylindrical section (124), and a second flow-directing ramp (125), the curved arc section (122) being located at a first end of the flow-directing separation column (120), the separation protrusion (121) being located between the front cylindrical section (123) and the rear cylindrical section (124), and the second flow-directing ramp (125) being located at a second end of the flow-directing separation column (120).

7. The separator (100) according to claim 6, wherein the guide flow separation column (120) has an outer diameter d, and the curved arc segment (122) has a width h along the axial direction of the guide flow separation column (120), wherein d/h is 0 to 2.

8. The separator (100) according to claim 1, wherein said separation protrusion (121) is a hemispherical protrusion.

9. The separator (100) according to any of claims 1 to 8, wherein the housing (110) comprises a first housing section (115) and a second housing section (116), the flow-directing separation column (120) being located within the first housing section (115), the second housing section (116) having an outer diameter smaller than the inner diameter of the first housing section (115), the second housing section (116) having a first end located inside the first housing section (115), the second housing section (116) and the first housing section (115) being connected by a plurality of spaced apart connecting ribs (117), adjacent two of the connecting ribs (117) having the liquid outlet (114) therebetween.

10. A separator (100) as claimed in claim 9, wherein the liquid outlet (114) is fan-shaped in cross-section.

11. The separator (100) according to claim 9, wherein said separator (100) further comprises a driving device (150) and an adjusting blade (160), said adjusting blade (160) being rotatably mounted inside said second housing section (116), said driving device (150) being in driving connection with said adjusting blade (160), said adjusting blade (160) being rotated through an angle of-5 ° to 100 °.

12. The separator (100) according to claim 11, wherein the adjustment blade (160) comprises a blade shank (161) and a blade portion (162), the blade shank (161) passing through the second housing section (116) and being connected to the drive means (150), the blade portion (162) being arranged in a sector, an extension of the blade shank (161) dividing the blade portion (162) into an a-region (1621) and a B-region (1622), wherein the ratio B/a of the area of the a-region (1621) and the area of the B-region (1622) is 0.2 to 0.3.

13. The separator (100) according to claim 9, wherein the end of the gas outlet (113) close to the gas-liquid inlet (112) is a tapered opening (1131), the end of the gas outlet (113) far from the gas-liquid inlet (112) is a cylindrical opening (1132), and the smaller opening end of the tapered opening (1131) is connected with the cylindrical opening (1132).

14. The separator (100) according to claim 1, wherein the separator (100) further comprises an adjusting shell (170), the adjusting shell (170) encloses a cavity (171), a first end of the adjusting shell (170) is provided with a diversion port (172) communicated with the cavity (171), the shell (110) is installed in the cavity (171), and the gas-liquid inlet (112) is connected with the diversion port (172).

15. The separator (100) according to claim 14, wherein a side of the baffle opening (172) adjacent to the cavity (171) is provided with a sink (174), and the first end of the housing (110) is provided with a connecting flange (118), and the connecting flange (118) is fixed in the sink (174) by a connecting member.

16. The separator (100) according to claim 14, wherein the inner wall surface of the baffle opening (172) has a third baffle slope (173), the third baffle slope (173) having an angle γ of 10 ° to 20 ° with the axis of the channel (111).

17. A balancing system comprising a separator (100), characterized in that the separator (100) is a separator (100) according to any of claims 1 to 16.

18. The balancing system according to claim 17, further comprising a compressor (200), the compressor (200) comprising an impeller (210), the gas outlet (113) of the separator (100) communicating with a front end inlet of the impeller (210);

the balance system further comprises a first pipeline (300), an oil mist separation device (400), an oil tank (500), a second pipeline (600) and a third pipeline (700), wherein two ends of the first pipeline (300) are respectively connected with a tail end chamber of the impeller (210) and the second pipeline (600), two ends of the second pipeline (600) are respectively connected with an inlet of the oil mist separation device (400) and an air outlet of the oil tank (500), two ends of the third pipeline (700) are respectively connected with an oil return port of the oil tank (500) and an oil port of the oil mist separation device (400), and a gas pipeline of the oil mist separation device (400) is connected with the cavity (171) of the separator (100).

19. A balancing system according to claim 18, wherein the first conduit (300) is provided with a first control valve (310).

20. A balancing system according to claim 18, wherein the compressor (200) comprises an outlet conduit (220), and wherein the cavity (171) and the outlet conduit (220) are connected by a fourth conduit (800).

21. A balancing system according to claim 20, wherein the fourth conduit (800) is provided with a flow regulating device (900).

22. The balancing system according to claim 21, characterized in that an inlet pipe (1100) is provided at the front end of the separator (100), the balancing system further comprises a controller and a detection assembly, the detection assembly is used for detecting the temperature of the cavity (171) and the inlet pipe (1100), the controller is in control connection with the detection assembly and the flow regulating device (900), and the controller controls the flow regulating device (900) according to the detection result of the detection assembly.

23. A balancing system according to claim 22, wherein the flow regulating device (900) is an electronic or thermal expansion valve or a regulating valve or a solenoid valve.

24. The balancing system according to claim 22, characterized in that the detection assembly comprises a first temperature sensor and a second temperature sensor (175), the first temperature sensor being arranged at the inlet duct (1100), the second temperature sensor (175) being arranged at the cavity (171), the first temperature sensor having a detected temperature T2, the second temperature sensor (175) having a detected temperature T1, the flow regulating device (900) being opened at a first predetermined opening when T1-T2 ≥ 0 ℃, the flow regulating device (900) being opened at a second predetermined opening according to temperature control when 0 ℃ > T1-T2 ≥ 0.5 ℃ 0 ℃ < T1-T2 ≤ 0.5 ℃, the flow regulating device (900) being closed when T1-T2 ≤ 0.5 ℃ T1-T2>0.5 ℃.

25. The balancing system according to claim 18, characterized in that there is a clearance channel (1110) between the outlet end of the housing (110) of the separator (100) and the impeller (210).

26. The balancing system according to claim 25, characterized in that the width e of the clearance channel (1110) is 0.5mm to 2 mm.

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