Separator and balancing system

Abstract

The application provides a separator and a balancing system. The separator comprises a shell, a channel formed by the shell, a gas-liquid inlet at a first end of the channel, a gas outlet at a second end of the channel, a liquid outlet on the shell and in communication with the channel, a flow guide separation column, a separation protrusion on the outer periphery of the flow guide separation column, a plurality of inlet blades, the inlet blades being arranged at intervals along the outer periphery of the first end of the flow guide separation column and fixed at the outer wall of the first end of the flow guide separation column and the inner wall of the gas-liquid inlet, and a plurality of outlet blades, the outlet blades being arranged at intervals along the outer periphery of the second end of the flow guide separation column and fixed at the outer wall of the second end of the flow guide separation column and the inner wall of the channel. The separator can separate the liquid in the refrigerant, effectively prevent the liquid refrigerant from entering the impeller, prevent the liquid strike phenomenon of the compressor, and ensure the safe operation of the compressor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compression devices, in particular to a separator and a balancing system. BACKGROUND

[0002] With the popularization of falling film evaporator applications, centrifugal water chiller units are increasingly widely used in falling film evaporators. However, the application of falling film evaporators in large refrigeration capacity sections has the risk of liquid carry-over. If the compressor inlet has the function of preventing liquid from directly entering the impeller, it is more conducive to the safe operation of the compressor. SUMMARY

[0003] The main purpose of the present application is to provide a separator and a balancing system to solve the problem of liquid carry-over risk in the prior art compressor.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a separator is provided, comprising: a shell, the shell surrounds to form a channel, the first end of the channel has a gas-liquid inlet, the second end of the channel has a gas outlet, and a liquid outlet is provided on the shell and communicates with the channel; a flow guide separation column, the flow guide separation column is arranged in the channel and extends along the axial direction of the channel, the outer periphery of the flow guide separation column is provided with a separation protrusion, and the separation protrusion is located on the side of the liquid outlet close to the gas-liquid inlet; a plurality of inlet blades are arranged along the outer periphery of the first end of the flow guide separation column, and the two ends of the inlet blades 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; a plurality of outlet blades are arranged along the outer periphery of the second end of the flow guide separation column, and the two ends of the outlet blades are respectively fixed on the outer wall of the second end of the flow guide separation column and the inner wall of the channel.

[0005] Further, the vertical projection of the inlet blade on the outer wall surface of the flow guide separation column includes a first plane section and a first curved section, the first plane section extends along the axial direction of the flow guide separation column, the first curved section smoothly transitions with the first plane section, and the included angle a between the tangential line at the end of the first curved section and the first plane section is 10° to 45°.

[0006] Further, the vertical projection of the outlet blade on the outer wall surface of the flow guide separation column includes a second plane section and a second curved section, the second curved section extends along the axial direction of the flow guide separation column, the second curved section smoothly transitions with the second plane section, and the included angle β between the tangential line at the end of the second curved section and the second plane section is 15° to 50°.

[0007] Further, the bending directions of the first curved section and the second curved section are opposite.

[0008] Further, the gas-liquid inlet has a first flow guide slope at an end away from the gas outlet, and an angle θ between the first flow guide slope and the channel is 10°-20°.

[0009] Further, the flow guide separation column further comprises a circular arc curved surface segment, a front cylindrical segment, a rear cylindrical segment, and a second flow guide slope, the circular arc curved surface segment is located at a first end of the flow guide separation column, the separation protrusion is located between the front cylindrical segment and the rear cylindrical segment, and the second flow guide slope is located at a second end of the flow guide separation column.

[0010] Further, an outer diameter of the flow guide separation column is d, and a width of the circular arc curved surface segment along an axial direction of the flow guide separation column is h, wherein d / h is 0-2.

[0011] Further, the separation protrusion is a semispherical protrusion.

[0012] Further, the shell comprises a first shell segment and a second shell segment, the flow guide separation column is located in the first shell segment, an outer diameter of the second shell segment is smaller than an inner diameter of the first shell segment, a first end of the second shell segment is located inside the first shell segment, the second shell segment and the first shell segment are connected by a plurality of spaced-apart connecting ribs, and the liquid outlet is located between two adjacent connecting ribs.

[0013] Further, a cross section of the liquid outlet is fan-shaped.

[0014] Further, the separator further comprises a driving device and an adjusting vane, the adjusting vane is rotatably installed inside the second shell segment, the driving device is drivingly connected with the adjusting vane, and a rotation angle of the adjusting vane is -5°-100°.

[0015] Further, the adjusting vane comprises a vane stem and a vane part, the vane stem passes through the second shell segment and is connected with the driving device, the vane part is arranged in a fan shape, and an extension line of the vane stem separates the vane part into an A region and a B region, wherein a ratio B / A of an area of the A region to an area of the B region is 0.2-0.3.

[0016] Further, an end of the gas outlet close to the gas-liquid inlet is a tapered port, an end of the gas outlet away from the gas-liquid inlet is a cylindrical port, and the tapered port is connected with the cylindrical port at an end with a smaller opening.

[0017] Further, the separator further comprises an adjusting housing, the adjusting housing surrounds a cavity, a first end of the adjusting housing has a flow guide port in communication with the cavity, the shell is installed in the cavity, and the gas-liquid inlet is connected with the flow guide port.

[0018] Further, the flow guide hole is provided with a sink groove on the side close to the cavity, and the first end of the shell is provided with a connecting flange fixed in the sink groove through a connecting piece.

[0019] Further, the inner wall surface of the flow guide hole has a third flow guide slope, and the included angle γ between the third flow guide slope and the axis of the channel is 10-20°.

[0020] According to another aspect of the present application, there is provided a balancing system comprising a separator as described above.

[0021] Further, the balancing system further comprises a compressor comprising an impeller, and a gas outlet of the separator is communicated with a front end inlet of the impeller; the balancing system further comprises a first pipeline, an oil mist separating device, an oil tank, a second pipeline and a third pipeline, two ends of the first pipeline are connected with a terminal chamber of the impeller and the second pipeline respectively, two ends of the second pipeline are connected with an inlet of the oil mist separating device and a gas outlet of the oil tank respectively, two ends of the third pipeline are connected with an oil return port of the oil tank and an oil port of the oil mist separating device respectively, and a gas pipeline of the oil mist separating device is connected with the cavity of the separator.

[0022] Further, the first pipeline is provided with a first control valve.

[0023] Further, the compressor comprises an outlet pipeline, and the cavity is connected with the outlet pipeline through a fourth pipeline.

[0024] Further, the fourth pipeline is provided with a flow adjusting device.

[0025] Further, a front end of the separator is provided with an inlet pipeline, and the balancing system further comprises a controller and a detection assembly for detecting temperatures of the cavity and the inlet pipeline, the controller is in control connection with the detection assembly and the flow adjusting device, and the controller controls the flow adjusting device according to a detection result of the detection assembly.

[0026] Further, the flow adjusting device is an electronic expansion valve, a thermal expansion valve, a regulating valve or an electromagnetic valve.

[0027] Further, the detection assembly comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged at the inlet pipe, 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, when T1-T2=0℃, the flow regulating device opens a first predetermined opening degree, when 0℃

[0028] Further, the gap channel is between the outlet end of the shell of the separator and the impeller.

[0029] Further, the width e of the gap channel is 0.5mm to 2mm.

[0030] In practical use, the separator is arranged at the front end of the impeller of the compressor, the gas-liquid mixed refrigerant enters from the gas-liquid inlet, is organized by the inlet blades, then enters the inside of the channel, and is separated by the separation protrusions on the flow guide separation column. Since the specific gravity of the liquid is greater than that of the gas, if the fluid contains liquid, the liquid is separated outward by the centrifugal force of the separation protrusions. At this time, the liquid in the refrigerant can move along the tangent direction of the separation protrusions and be transported to the outside of the shell from the liquid outlet, and the gas in the refrigerant continues to be transported along the axial direction of the channel, is reorganized by the outlet blades, and is then transported to the impeller from the gas outlet. It can be seen that the separator of the present application can separate the liquid in the refrigerant, effectively prevent the liquid refrigerant from entering the impeller, prevent the liquid strike phenomenon of the compressor, and ensure the safe operation of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings constituting a part of the specification of the present application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0032] Figure 1 The cross-sectional view when the separator of the present application is connected with the compressor is schematically shown;

[0033] Figure 2 The cross-sectional view of the separator of the present application is schematically shown;

[0034] Figure 3 The cross-sectional view of the front end of the adjusting shell of the present application is schematically shown;

[0035] Figure 4Fig. 1 schematically shows a perspective view of the housing of the separator of the present application and a longitudinal section of its internal structure after being cut open;

[0036] Figure 5 Fig. 2 schematically shows a first cross-sectional view of the housing of the separator of the present application and its internal structure;

[0037] Figure 6 Fig. 3 schematically shows a second cross-sectional view of the housing of the separator of the present application and its internal structure;

[0038] Figure 7 Fig. 4 schematically shows a half cross-sectional view of the housing of the separator of the present application and its internal structure;

[0039] Figure 8 Fig. 5 schematically shows a cross-sectional view of the structure of the housing of the separator of the present application after being cut open longitudinally; Figure 7

[0040] Figure 9 Fig. 6 schematically shows a front view of the regulating vane of the present application;

[0041] Figure 10 Fig. 7 schematically shows a vertical projection view of the inlet vane of the present application on the outer wall surface of the flow guide separation column;

[0042] Figure 11 Fig. 8 schematically shows a vertical projection view of the outlet vane of the present application on the outer wall surface of the flow guide separation column;

[0043] Figure 12 Fig. 9 schematically shows a front view of the balancing system of the present application after being cut open partially;

[0044] Figure 13 Fig. 10 schematically shows a front view of the balancing system of the present application after the compressor and the separator are connected;

[0045] Figure 14 Fig. 11 schematically shows a cross-sectional view of the regulating housing and the impeller of the present application at the connecting position.

[0046] In the above figures, the following reference signs are used:

[0047] ​100 separator; 110 housing; 111 channel; 112 gas-liquid inlet; 1121 first flow guide slope; 113 gas outlet; 1131 conical port; 1132 cylindrical port; 114 liquid outlet; 115 first housing section; 116 second housing section; 117 connecting rib; 118 connecting flange; 120 flow guide separation column; 121 separation protrusion; 122 circular arc curved section; 123 front cylindrical section; 124 rear cylindrical section; 125 second flow guide slope; 130 inlet blade; 131 first planar section; 132 first curved section; 140 outlet blade; 141 second curved section; 142 second planar section; 150 driving device; 160 adjusting blade; 161 blade stem; 162 blade part; 1621 A area; 1622 B area; 170 housing; 171 cavity; 172 flow guide port; 173 third flow guide slope; 174 sink; 175 second temperature sensor; 200 compressor; 210 impeller; 220 outlet pipe; 300 first pipe; 310 first control valve; 400 oil mist separation device; 500 oil tank; 600 second pipe; 700 third pipe; 800 fourth pipe; 900 flow regulating device; 1100 inlet pipe; 1110 gap channel. DETAILED DESCRIPTION

[0048] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combinations thereof.

[0050] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0051] Referring to Figures 1 to 11 As shown, according to an embodiment of the present application, a separator 100 is provided.

[0052] The separator 100 in the embodiment comprises a housing 110, a flow guide separation column 120, inlet vanes 130, and outlet vanes 140.

[0053] The housing 110 encloses a passage 111, the first end of the passage 111 having a gas-liquid inlet 112, the second end of the passage 111 having a gas outlet 113, and the housing 110 being provided with a liquid outlet 114 in communication with the passage 111. The flow guide separation column 120 is arranged in the passage 111 and extends along the axial direction of the passage 111, the outer periphery of the flow guide separation column 120 being provided with a separation protrusion 121, the separation protrusion 121 being located on the side of the liquid outlet 114 close to the gas-liquid inlet 112. A plurality of inlet vanes 130 are arranged along the outer periphery of the first end of the flow guide separation column 120 at intervals, the two ends of the inlet vanes 130 being fixed to the outer wall of the first end of the flow guide separation column 120 and the inner wall of the gas-liquid inlet 112, respectively. A plurality of outlet vanes 140 are arranged along the outer periphery of the second end of the flow guide separation column 120 at intervals, the two ends of the outlet vanes 140 being fixed to the outer wall of the second end of the flow guide separation column 120 and the inner wall of the passage 111, respectively.

[0054] In actual use, the separator 100 is arranged at the front end of the impeller 210 of the compressor 200, the refrigerant in gas-liquid mixture enters from the gas-liquid inlet 112, is organized by the inlet blade 130, and then enters the inside of the channel 111, and under the separation of the separation protrusions 121 on the flow guide separation column 120, the liquid in the fluid is separated outward by the centrifugal force of the separation protrusions 121 due to the larger specific gravity of the liquid than that of the gas, at this time, the liquid in the refrigerant can move along the tangent direction of the separation protrusions 121 and be 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, is organized again by the outlet blade 140, and is then discharged from the gas outlet 113 to the impeller 210. It can be seen that the separator 100 of the present application can separate the liquid in the refrigerant, effectively prevent the liquid refrigerant from entering the impeller 210, prevent the liquid hammer phenomenon of the compressor 200, and ensure the safe operation of the compressor 200.

[0055] In combination with Figure 1 , Figure 2 , Figure 4 and Figure 10 , the vertical projection of the inlet blade 130 on the outer wall surface of the flow guide separation column 120 in the embodiment includes a first plane section 131 and a first curved section 132, the first plane section 131 extends along the axial direction of the flow guide separation column 120, the first curved section 132 is smoothly connected with the first plane section 131, and the included angle α between the tangent line at the end of the first curved section 132 and the first plane section 131 is 10° to 45°, for example, 20°, 30°, 40°. After the refrigerant in gas-liquid mixture enters the gas-liquid inlet 112 and is organized by the inlet blade 130, the refrigerant can move spirally on the outer surface of the flow guide separation column 120, and when the refrigerant flows to the separation protrusions 121, the liquid in the refrigerant can be effectively separated and discharged from the liquid outlet 114.

[0056] It should be noted that the vertical projection of the inlet blade 130 on the outer wall surface of the flow guide separation column 120 in the embodiment refers to the projection seen from the direction parallel to the inlet blade 130 towards the outer wall surface of the flow guide separation column 120.

[0057] In combination with Figure 1 , Figure 2 , Figure 4 and Figure 11As shown, the vertical projection of the outlet blade 140 on the outer wall surface of the flow guide 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 flow guide separation column 120, the second curved section 141 and the second planar section 142 are smoothly connected, and the included angle β between the tangential line at the end of the second curved section 141 and the second planar section 142 is 15° to 50°, for example, 20°, 30°, 40°. After the gas-liquid mixed refrigerant flows to the separation protrusion 121 and is separated, the separated gaseous refrigerant can be reorganized by the outlet blade 140 and finally enters the compressor 200.

[0058] Similarly, the vertical projection of the outlet blade 140 on the outer wall surface of the flow guide separation column 120 in the embodiment refers to the projection seen from the direction parallel to the outlet blade 140 towards the direction of the outer wall surface of the flow guide separation column 120.

[0059] Preferably, the bending directions of the first curved section 132 and the second curved section 141 in the embodiment are opposite, which facilitates reorganizing the refrigerant after being organized by the inlet blade 130, so that the refrigerant can continue to be transmitted along the axial direction of the separator 100. According to actual use requirements, only the included angle β between the tangential line at the end of the second curved section 141 and the second planar section 142 needs to be adjusted. The outlet blade 140 in the embodiment can guide the gas flow to flow out, and the gas flow outlet direction of the outlet blade 140 of the separator 100 is the axial direction, which guides the gas flow to flow uniformly along the axial direction.

[0060] Referring to Figure 5 As shown, the gas-liquid inlet 112 in the embodiment has a first flow guide inclined surface 1121 at the end away from the gas outlet 113, and the included angle θ between the first flow guide inclined surface 1121 and the axis of the channel 111 is 10° to 20°, which facilitates guiding the refrigerant into the gas-liquid inlet 112.

[0061] Referring to Figures 1 to 8 As shown, the flow guide separation column 120 in the embodiment further includes a circular arc curved section 122, a front cylindrical section 123, a rear cylindrical section 124, and a second flow guide inclined surface 125, the circular arc curved section 122 is located at the first end of the flow guide 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 guide inclined surface 125 is located at the second end of the flow guide separation column 120.

[0062] In the implementation design, the inlet blade 130 is located at the outer periphery of the front cylindrical section 123, and the outlet blade 140 is located at the outer periphery of the rear cylindrical section 124, which facilitates guiding and organizing the gas flow. After the refrigerant is separated by the separation protrusion 121, it enters the end of the channel 111 from the second flow guide inclined surface 125 and flows out from the gas outlet 113.

[0063] Preferably, the outer diameter of the flow guide separation column 120 is d, and the width of the circular arc curved section 122 along the axial direction of the flow guide separation column 120 is h, wherein d / h is 0 to 2, which facilitates guiding the refrigerant into the passage 111.

[0064] The separation protrusion 121 is a hemispherical protrusion, which facilitates separating the gas-liquid mixed refrigerant.

[0065] In actual operation, the inlet blade 130 of the separator 100 in this embodiment guides the fluid to change from axial flow to the direction of the blade outlet, at which time the gas flow can rotate along the front cylindrical section 123. Since the specific gravity of the liquid is greater than that of the gas, if the fluid contains liquid, the liquid will be separated outward due to the centrifugal force after the action of the separation protrusion 121.

[0066] When the fluid flows through the separation protrusion 121, the flow direction changes, and the gas with smaller specific gravity is easier to change direction and enter the outlet blade 140 along the flow guide separation column 120. Since the specific gravity of the liquid is large, when the fluid flows through the highest point of the separation protrusion 121, the liquid will fly to the liquid outlet 114 position and be discharged from the separator 100, avoiding the liquid refrigerant from entering the impeller.

[0067] The shell 110 includes a first shell section 115 and a second shell section 116. The flow guide separation column 120 is located in the first shell section 115. The outer diameter of the second shell section 116 is smaller than the inner diameter of the first shell section 115. The first end of the second shell section 116 is located inside the first shell section 115. The second shell section 116 and the first shell section 115 are connected by a plurality of spaced-apart connecting ribs 117. The liquid outlet 114 is located between any two adjacent connecting ribs 117. Preferably, the cross section of the liquid outlet 114 is fan-shaped. Of course, in other embodiments of the present application, the liquid outlet 114 can also be triangular, square or other special-shaped structures.

[0068] Referring to Figure 2 As shown, the end of the gas outlet 113 close to the gas-liquid inlet 112 is a tapered port 1131, and the end of the gas outlet 113 away from the gas-liquid inlet 112 is a cylindrical port 1132. The smaller end of the tapered port 1131 is connected with the cylindrical port 1132, which facilitates quickly conveying the gas refrigerant into the compressor 200. When the gas flow enters the gas outlet 113, the gas flow is guided to flow along the tapered port 1131 and the cylindrical port 1132, and the gas flow becomes more and more uniform.

[0069] In combination with Figure 1 and Figure 9As shown, the separator 100 in the embodiment further comprises a driving device 150 and an adjusting vane 160, the adjusting vane 160 is rotatably installed inside the second housing segment 116, the driving device 150 is drivingly connected with the adjusting vane 160, the rotation angle of the adjusting vane 160 is -5° to 100°, in actual use of the separator 100, the driving device 150 can be controlled according to the use requirement of the compressor 200, thereby driving the adjusting vane 160 to rotate, when the adjusting vane 160 rotates, the gas flow and the flow direction of the gas outlet 113 can be adjusted.

[0070] The adjusting vane 160 in the embodiment comprises a vane stem 161 and a vane part 162, the vane stem 161 passes through the vane part 162 and is connected with the second housing segment 116 and the driving device 150, the vane part 162 is arranged in a fan shape, the extension line of the vane stem 161 separates the vane part into an A area 1621 and a B area 1622, wherein the ratio B / A of the area of the A area 1621 to the area of the B area 1622 is 0.2 to 0.3.

[0071] Preferably, the driving device 150 in the embodiment is a driving motor, which is simple in structure and easy to realize.

[0072] Again referring to Figures 1 to 7 As shown, the separator 100 in the embodiment further comprises an adjusting housing 170, the adjusting housing 170 is surrounded to form a cavity 171, the first end of the adjusting housing 170 has a flow guide opening 172 in communication with the cavity 171, the housing 110 is installed in the cavity 171, and the gas-liquid inlet 112 is connected with the flow guide opening 172. After the liquid in the channel 111 is separated from the liquid outlet 114, it enters the inside of the cavity 171, and in actual use, the liquid refrigerant in the cavity 171 can be gasified and then delivered to the compressor again.

[0073] In order to facilitate installation, the flow guide opening 172 in the embodiment is provided with a sunken groove 174 on the side close to the cavity 171, the first end of the housing 110 is provided with a connecting flange 118, and the connecting flange 118 is fixed in the sunken groove 174 by a connecting piece. The connecting piece in the embodiment is a screw or a pin, etc.

[0074] The inner wall surface of the flow guide opening 172 in the embodiment has a third flow guide slope 173, the included angle γ between the third flow guide slope 173 and the axis of the channel 111 is 10° to 20°, which facilitates uniform and stable delivery of the refrigerant into the flow guide opening 172.

[0075] In actual use, the front end of the separator 100 in the embodiment is provided with an inlet pipe 1100, the inlet pipe 1100 is fixed at the front end of the adjusting housing 170 by bolts, which facilitates delivery of the refrigerant into the separator 100.

[0076] The refrigerant passes through the inlet pipe 1100, and the gas flow is disturbed, the gas flow is uneven, and the performance of the compressor is greatly affected. In the embodiment, the inlet pipe 1100 is arranged at the front end of the separator 100, the liquid in the refrigerant can be separated out, the flow state of the refrigerant tends to be the ideal state designed, and the efficiency of the compressor 200 is improved.

[0077] In combination Figures 1 to 14 As shown in the drawings, according to another aspect of the present application, a balancing system is provided, which comprises the separator 100 in the above-mentioned embodiment.

[0078] The balancing system in the embodiment further comprises the compressor 200, which comprises the impeller 210, the gas outlet 113 of the separator 100 is communicated with the front end inlet of the impeller 210, the liquid in the refrigerant can be separated out, the flow state of the refrigerant tends to be the ideal state designed, and the efficiency of the compressor 200 is improved.

[0079] Referring to Figure 12 In the drawings Figure 14 As shown in the drawings, the balancing system in the embodiment further comprises the first pipe 300, the oil mist separating device 400, the oil tank 500, the second pipe 600 and the third pipe 700, two ends of the first pipe 300 are respectively connected with the end chamber of the impeller 210 and the second pipe 600, two ends of the second pipe 600 are respectively connected with the inlet of the oil mist separating device 400 and the gas outlet of the oil tank 500, two ends of the third pipe 700 are respectively connected with the oil return port of the oil tank 500 and the oil port of the oil mist separating device 400, and the gas pipe of the oil mist separating device 400 is connected with the cavity 171 of the separator 100.

[0080] In the working process, through the action of the first pipe 300, the high-temperature and high-pressure refrigerant leaked from the end of the impeller 210 can be transported to the second pipe 600, through the action of the oil mist separating device 400, the lubricating oil in the refrigerant can be separated out and then transported into the oil tank 500, and then the high-temperature and high-pressure refrigerant is transported into the cavity 171, which is convenient for gasifying the liquid refrigerant in the cavity 171 and balancing the pressure difference of the compressor 200.

[0081] Preferably, the first control valve 310 is arranged on the first pipe 300 in the embodiment, which is convenient for controlling the refrigerant entering the second pipe 600.

[0082] The compressor 200 in the embodiment comprises an outlet pipe 220, and the cavity 171 is connected with the outlet pipe 220 through a fourth pipe 800. The fourth pipe 800 is provided with a flow regulating device 900. Through the fourth pipe 800 and the flow regulating device 900, the high-temperature and high-pressure refrigerant output by the compressor 200 is conveniently delivered into the cavity 171, and the liquid refrigerant in the cavity 171 is conveniently gasified.

[0083] In the embodiment, the gas outlet of the oil tank 500 is connected with the second pipe 600 through a flange, the second pipe 600 is connected with the first pipe 300 and is then welded with the oil mist separating device 400, after being separated by the oil mist separating device 400, the gas enters the cavity 171, which is convenient for gasifying the liquid refrigerant in the cavity 171 and balancing the pressure of the oil tank 500. The gas outlet pipe of the oil mist separating device 400 is connected with the adjusting shell 170 through a flange. After being separated by the oil mist separating device 400, the lubricating oil flows back to the oil tank 500 by gravity.

[0084] The balancing system in the embodiment further comprises a controller (not shown in the figure) 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. The controller controls the flow regulating device 900 according to the detection signal transmitted by the detection assembly.

[0085] Preferably, the flow regulating device 900 in the embodiment is an electronic expansion valve, a thermal expansion valve, a regulating valve or an electromagnetic valve.

[0086] The detection assembly in the embodiment comprises a first temperature sensor (not shown in the figure) and a second temperature sensor 175. The first temperature sensor is arranged at the inlet pipe 1100, and the second temperature sensor 175 is arranged at the cavity 171. The detection temperature of the first temperature sensor is T2, and the detection temperature of the second temperature sensor 175 is T1. When T1-T2=0℃, the flow regulating device 900 opens a first predetermined opening degree. When 0℃

[0087] The liquid is separated by the separator 100 at the inlet of the compressor 200 and is discharged into the cavity 171. The high-temperature gas of the balancing system enters the cavity 171 and exchanges heat with the separated liquid. The cavity 171 is provided with the second temperature sensor 175, and the flow of the high-temperature gas in the fourth pipe 800 is controlled by the second temperature sensor 175.

[0088] The gap channel 1110 is between the outlet end of the shell 110 of the separator 100 and the impeller 210. The heat-exchanged gas enters the impeller 210 through the gap channel 1110, which is composed of the end face of the wheel cover, the sealing side of the wheel cover and the rear end face of the shell 110. Preferably, the width e of the gap channel 1110 is 0.5mm to 2mm.

[0089] According to the above embodiment, it can be known that the inlet blade 130 of the separator 100 of the present application guides the fluid to change from axial flow to the outlet direction of the inlet blade 130, at this time, the airflow can rotate along the front cylindrical section 123, and since the specific gravity of the liquid is greater than that of the gas, if the fluid contains liquid, the liquid will be separated outward due to the centrifugal force. After the fluid passes through the separation protrusion 121, the flow direction changes, and the gas with small specific gravity is easier to change direction and enter the outlet blade 140 of the separator 100 along the flow guide separation column 120. Since the specific gravity of the liquid is large, when the fluid flows through the highest point of the separation protrusion 121, the liquid will fly to the liquid outlet 114 position and be discharged from the shell 110, avoiding the liquid entering the impeller 210.

[0090] The balancing system of the present application can ensure the safe operation of the compressor 200, and the high-temperature gas delivered into the inlet of the compressor 200 can make the separated liquid gasify; by adjusting the operating state of the temperature balancing system in the shell 170, the complete gasification of the separated liquid is ensured.

[0091] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects: the separator of the present application can separate the liquid, effectively prevent the liquid from entering the impeller, and ensure the safe operation of the compressor. The separated liquid exists in the closed space of the adjusting shell, is gasified by heat exchange with the high-temperature gas, and the heat-exchanged gas enters the impeller to participate in the refrigeration cycle. The high-temperature gas for heat exchange comes from the balancing system.

[0092] The function of the balancing system is to balance the pressure of the impeller end chamber and the oil tank of the compressor with the inlet pressure of the compressor, and to ensure the safe operation of the system. The temperature in the impeller end chamber and the oil tank during the operation of the unit is higher than the inlet temperature of the compressor. The separated liquid of the separator can exchange heat with the gas. The temperature in the adjusting shell is monitored by the second temperature sensor, and if the temperature does not meet the specified requirements, the high-temperature and high-pressure gas in the balancing system is used for heating. The flow of the high-temperature and high-pressure gas in the balancing system is controlled by an electronic expansion valve or an electromagnetic valve.

[0093] It has to be noted that the terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the use of these terms is interchangeable under appropriate circumstances and the embodiments of the present application are capable of operation in other sequences than described or illustrated herein. Moreover, the terms "comprise", "have" and any variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, has or includes a list of elements is not necessarily limited to those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0094] The preferred embodiments of the application are described above in detail. The application is not limited to the embodiments described above, but can vary and be modified in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the scope of the protection of the application.

Claims

1. A separator (100) characterized by, The utility model relates to a kind of gas-liquid separation devices, including: Housing (110), the housing (110) is formed channel (111), the first end of the channel (111) has gas-liquid inlet (112), the second end of the channel (111) has gas outlet (113), the housing (110) is provided with liquid outlet (114) with the channel (111) communication;The first flow guide slope (1121) of the gas-liquid inlet (112) is away from the end of the gas outlet (113) has; Flow guide separation column (120), the flow guide separation column (120) is arranged in the channel (111) and extends along the axial direction of the channel (111), the outer periphery of the flow guide separation column (120) is provided with separation protrusion (121), and the separation protrusion (121) is located on the side of the liquid outlet (114) close to the gas-liquid inlet (112);The flow guide separation column (120) further includes front cylindrical section (123) and rear cylindrical section (124), and the separation protrusion (121) is located between the front cylindrical section (123) and the rear cylindrical section (124); Inlet blade (130), a plurality of the inlet blade (130) is interval arranged along the outer periphery of the first end of the flow guide separation column (120), and the two ends of the inlet blade (130) are 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) respectively; Outlet blade (140), a plurality of the outlet blade (140) is interval arranged along the outer periphery of the second end of the flow guide separation column (120), and the two ends of the outlet blade (140) are fixed on 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, characterized in that The vertical projection of the inlet blade (130) on the outer wall surface of the flow guide separation column (120) includes first plane section (131) and first curved section (132), the first plane section (131) extends along the axial direction of the flow guide separation column (120), the first curved section (132) is smoothly transitioned with the first plane section (131), and the included angle α between the tangential line at the end of the first curved section (132) and the first plane section (131) is 10°-45°.

3. The separator (100) according to claim 2, characterized in that The vertical projection of the outlet blade (140) on the outer wall surface of the flow guide separation column (120) includes second plane section (142) and second curved section (141), the second curved section (141) extends along the axial direction of the flow guide separation column (120), the second curved section (141) is smoothly transitioned with the second plane section (142), and the included angle β between the tangential line at the end of the second curved section (141) and the second plane section (142) is 15°-50°.

4. The separator (100) according to claim 3, characterized in that The bending direction of the first curved section (132) and the second curved section (141) is opposite.

5. The separator (100) according to claim 1, characterized in that The included angle θ between the first flow guide slope (1121) and the channel (111) is 10°-20°.

6. The separator (100) according to claim 1, characterized in that The flow guide separation column (120) further comprises a circular arc curved section (122) and a second flow guide slope (125), the circular arc curved section (122) is located at the first end of the flow guide separation column (120), and the second flow guide slope (125) is located at the second end of the flow guide separation column (120).

7. The separator (100) according to claim 6, characterized in that The outer diameter of the flow guide separation column (120) is d, and the width of the circular arc curved section (122) along the axial direction of the flow guide separation column (120) is h, wherein d / h is 0-2.

8. The separator (100) according to claim 1, characterized in that The separation protrusion (121) is a semispherical protrusion.

9. The separator (100) according to any one of claims 1 to 8, characterized in that The outer shell (110) comprises a first outer shell section (115) and a second outer shell section (116), the flow guide separation column (120) is located in the first outer shell section (115), the outer diameter of the second outer shell section (116) is smaller than the inner diameter of the first outer shell section (115), the first end of the second outer shell section (116) is located inside the first outer shell section (115), the second outer shell section (116) and the first outer shell section (115) are connected by a plurality of spaced connection ribs (117), and the liquid outlet (114) is arranged between adjacent two connection ribs (117).

10. The separator (100) according to claim 9, characterized in that The cross section of the liquid outlet (114) is a sector.

11. The separator (100) according to claim 9, characterized in that The separator (100) further comprises a driving device (150) and an adjusting blade (160), the adjusting blade (160) is rotatably installed inside the second outer shell section (116), the driving device (150) is drivingly connected with the adjusting blade (160), and the rotation angle of the adjusting blade (160) is -5°-100°.

12. The separator (100) according to claim 11, characterized in that The adjusting blade (160) comprises a blade stem (161) and a blade part (162), the blade stem (161) penetrates through the second outer shell section (116) and is connected with the driving device (150), the blade part (162) is arranged in a sector shape, and the extension line of the blade stem (161) divides the blade part (162) into an A region (1621) and a B region (1622), wherein the ratio B / A of the area of the A region (1621) to the area of the B region (1622) is 0.2-0.

3.

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

14. The separator (100) of claim 1, characterized in that, The separator (100) further comprises an adjusting housing (170), the adjusting housing (170) surrounds a cavity (171), the first end of the adjusting housing (170) is provided with a flow guide port (172) in communication with the cavity (171), the outer shell (110) is installed in the cavity (171), and the gas-liquid inlet (112) is connected with the flow guide port (172).

15. The separator (100) according to claim 14, characterized in that The flow guide opening (172) is provided with a sink (174) near one side of the cavity (171), and the first end of the shell (110) is provided with a connecting flange (118) fixed in the sink (174) by a connecting member.

16. The separator (100) according to claim 14, characterized in that The inner wall surface of the flow guide opening (172) has a third flow guide slope (173) with an included 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 the separator (100) of any one of claims 1 to 16.

18. The balancing system of claim 17, wherein, The balancing system further comprises a compressor (200) comprising an impeller (210), and a gas outlet (113) of the separator (100) is in communication with a front end inlet of the impeller (210). The balancing system further comprises a first pipeline (300), an oil mist separator (400), an oil tank (500), a second pipeline (600), and a third pipeline (700), two ends of the first pipeline (300) are connected with a terminal chamber of the impeller (210) and the second pipeline (600) respectively, two ends of the second pipeline (600) are connected with an inlet of the oil mist separator (400) and a gas outlet of the oil tank (500) respectively, two ends of the third pipeline (700) are connected with an oil return port of the oil tank (500) and an oil port of the oil mist separator (400) respectively, and a gas pipeline of the oil mist separator (400) is connected with the cavity (171) of the separator (100).

19. The balancing system of claim 18, wherein, The first pipeline (300) is provided with a first control valve (310).

20. The balancing system of claim 18, wherein, The compressor (200) comprises an outlet pipeline (220), and the cavity (171) is connected with the outlet pipeline (220) through a fourth pipeline (800).

21. The balancing system of claim 20, wherein, The fourth pipeline (800) is provided with a flow regulating device (900).

22. The balancing system of claim 21, wherein, The front end of the separator (100) is provided with an inlet pipeline (1100), and the balancing system further comprises a controller and a detection assembly, the detection assembly is used for detecting temperatures of the cavity (171) and the inlet pipeline (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 a detection result of the detection assembly.

23. The balancing system of claim 22, wherein, The flow regulating device (900) is an electronic expansion valve, a thermal expansion valve, a regulating valve, or a solenoid valve.

24. The balancing system of claim 22, wherein, The detection assembly comprises a first temperature sensor and a second temperature sensor (175), the first temperature sensor is arranged at the inlet pipe (1100), the second temperature sensor (175) is arranged at the cavity (171), the detection temperature of the first temperature sensor is T2, the detection temperature of the second temperature sensor (175) is T1, when T1-T2=0℃, the flow regulating device (900) opens a first predetermined opening degree, when 0℃>T1-T2≥0.5℃ 0℃<T1-T2≤0.5℃, the opening degree of the flow regulating device (900) opens a second predetermined opening degree according to temperature control, when T1-T2<0.5℃ T1-T2>0.5℃, the flow regulating device (900) is closed.

25. The balancing system of claim 18, wherein, The gap channel (1110) is arranged between the outlet end of the shell (110) of the separator (100) and the impeller (210).

26. The balancing system of claim 25, wherein, The width e of the gap channel (1110) is 0.5mm to 2mm.

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