CN102997522A - Centrifugal refrigerating compressor, and oil separation system and oil separation method for centrifugal refrigerating compressor - Google Patents
Centrifugal refrigerating compressor, and oil separation system and oil separation method for centrifugal refrigerating compressor Download PDFInfo
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- CN102997522A CN102997522A CN2012104882242A CN201210488224A CN102997522A CN 102997522 A CN102997522 A CN 102997522A CN 2012104882242 A CN2012104882242 A CN 2012104882242A CN 201210488224 A CN201210488224 A CN 201210488224A CN 102997522 A CN102997522 A CN 102997522A
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Abstract
The invention relates to a centrifugal refrigerating compressor, and an oil separation system and an oil separation method for the centrifugal refrigerating compressor. The oil separation system comprises a primary oil-gas separator, a secondary oil-gas separator, a balance pipe and an oil return pipe, wherein the primary oil-gas separator is arranged inside a gear box of the centrifugal refrigerating compressor; the secondary oil-gas separator is arranged at an air suction part of the centrifugal refrigerating compressor; lubricating oil and mixed gas of refrigerant which are separated out by the primary oil-gas separator flow through the balance pipe and the secondary oil-gas separator sequentially; the lubricating oil separated out by the secondary oil-gas separator flows into the gear box through the oil return pipe; and the refrigerant separated out by the secondary oil-gas separator enters an air suction hole of the air suction part. The primary oil-gas separator and the secondary oil-gas separator continuously play roles, so that the lubricating oil and the mixed gas of the refrigerant are separated completely; and therefore oil leakage is effectively reduced and the safe operation of a machine set is ensured.
Description
Technical field
The present invention relates to compressor field, particularly relate to a kind of centrifugal refigerating compressor and oily separation system thereof, method.
Background technology
Centrifugal refigerating compressor is kept relatively low pressure in order to make in its gear-box, need to add balance pipe between the inspiratory component of gear-box and compressor.But the mist of oil of gear-box inside can enter along balance pipe the inspiratory component of compressor, thereby makes lubricating oil enter kind of refrigeration cycle thereupon, the problem of cause system's heat transfer effect variation, compressor running oil.Wherein, this mode is the main race oil approach of centrifugal refigerating compressor.Run oil in order to reduce as far as possible, unit of the prior art has added the built-in oil gas separating device usually in the gear-box of balance pipe front end, and with the mist of separation lubrication oil and cold-producing medium, oil mass is run in control.But still having remaining mist of oil can't separate fully, thereby also can cause comparatively serious race oil problem.Run oil and can produce a series of fault, cause unit to move.
Summary of the invention
The present invention aim to provide a kind of simple in structure, reliability is high, can effectively reduce the centrifugal refigerating compressor that runs oily problem and oily separation system thereof, method.
For solving the problems of the technologies described above, as first aspect of the present invention, provide a kind of oil of centrifugal refigerating compressor to separate system, comprising: primary oil gas separating device, primary oil gas separating device are installed in the gear-box of centrifugal refigerating compressor; The secondary gs-oil separator, the secondary gs-oil separator is installed on the inspiratory component of centrifugal refigerating compressor; Balance pipe, the mist of the isolated lubricating oil of primary oil gas separating device and cold-producing medium flow through successively balance pipe and secondary gs-oil separator; Oil return pipe flows into gear-box by the isolated lubricating oil of secondary gs-oil separator through oil return pipe; Entered the air entry of inspiratory component by the isolated cold-producing medium of secondary gs-oil separator.
Further, oily separation system also comprises the support with hole, and the primary oil gas separating device is installed in the cavity of gear-box by support.
Further, oily separation system also comprises the stop valve that is installed on the oil return pipe.
Further, inspiratory component comprises inner tube and is enclosed within the outer tube in the inner tube outside, one end of inner tube is connected with an end of outer tube, the other end of inner tube forms air entry, be provided with air inlet on the sidewall of outer tube, balance pipe is connected with air inlet, and the secondary gs-oil separator is arranged in the annular gap between outer tube and the inner tube.
Further, the secondary gs-oil separator comprises annular sidewall and the diapire with hole; Be provided with flange on the outer tube wall of inner tube; The other end of inner tube passes the hole on the diapire, and annular sidewall is resisted against on the boss at air inlet place of outer tube.
Further, also be provided with lubricating oil outlet on the sidewall of outer tube, oil return pipe is connected with lubricating oil outlet.
As second aspect of the present invention, a kind of oil separating method of centrifugal refigerating compressor is provided, comprise: the primary oil gas separating device is installed in the gear-box of centrifugal refigerating compressor, is separated in order to the lubricating oil in the gear-box is carried out one-level with the mist of cold-producing medium; The secondary gs-oil separator is installed at inspiratory component place at centrifugal refigerating compressor; Utilize the mist after the secondary gs-oil separator separates one-level to carry out the second-order separation, make the isolated lubricating oil of secondary gs-oil separator flow into gear-box through oil return pipe, make the isolated cold-producing medium of secondary gs-oil separator enter the air entry of inspiratory component.
Further, with the primary oil gas separating device by being installed in the cavity of gear-box with porose support.
Further, oil separating method also comprises: at oil return pipe stop valve is set.
As the 3rd aspect of the present invention, a kind of centrifugal refigerating compressor is provided, comprise oily separation system, this oil separation system is that above-mentioned oil separates system.
The present invention plays a role continuously by primary oil gas separating device and secondary gs-oil separator, makes the mist of lubricating oil and cold-producing medium separate more thoroughly, thereby has effectively reduced the race oil mass, has guaranteed the safe operation of unit.Along with the operation of unit, said process can continue circulation always and go down.In addition, the present invention also has characteristics simple in structure, that reliability is high.
Description of drawings
Fig. 1 has schematically shown the structural representation of the oil separation system among the present invention.
Reference numeral among the figure: 10, primary oil gas separating device; 20, gear-box; 30, secondary gs-oil separator; 31, annular sidewall; 32, diapire; 40, inspiratory component; 41, inner tube; 42, outer tube; 43, air inlet; 44, lubricating oil outlet; 45, air entry; 46, flange; 47, boss; 50, balance pipe; 60, oil return pipe; 70, stop valve.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As a first aspect of the present invention, provide a kind of oil of centrifugal refigerating compressor to separate system.As shown in Figure 1, this oil separation system comprises: primary oil gas separating device 10, primary oil gas separating device 10 are installed in the gear-box 20 of centrifugal refigerating compressor; Secondary gs-oil separator 30, secondary gs-oil separator 30 are installed on the inspiratory component 40 of centrifugal refigerating compressor; Balance pipe 50, the mist of primary oil gas separating device 10 isolated lubricating oil and cold-producing medium flow through successively balance pipe 50 and secondary gs-oil separator 30; Oil return pipe 60 flows into gear-box 20 by secondary gs-oil separator 30 isolated lubricating oil through oil return pipe 60; Entered the air entry 45 of inspiratory component 40 by secondary gs-oil separator 30 isolated cold-producing mediums.Preferably, primary oil gas separating device 10 is installed in the top of gear-box, can flow back to gear-box 20 in order to separate the lubricating oil that obtains under its action of gravitation.
During the unit operation, owing to the pressure of the pressure in the gear-box 20 greater than the exit of balance pipe 50, therefore, the cold-producing medium in the gear-box 20 and the mist of lubricating oil at first collide through primary oil gas separating device 10 and separate.Isolated lubricating oil can because of action of gravitation, flow back into the inside of gear-box 20.So the mist after the filtration flows to the inspiratory component 40 of compressor by balance pipe 50.Before mist enters the air entry 45 of inspiratory component 40 of compressor, carry out the second-order separation through secondary gs-oil separator 30, the lubricating oil of separating is directly got back to gear-box 20 by oil return pipe 60, and gas then enters kind of refrigeration cycle, thereby reaches the purpose of separation lubrication oil and cold-producing medium.Here, primary oil gas separating device 10 and secondary gs-oil separator 30 play a role continuously, make the mist of lubricating oil and cold-producing medium separate more thoroughly, thereby have effectively reduced the race oil mass, have guaranteed the safe operation of unit.Along with the operation of unit, said process can continue circulation always and go down.In addition, the present invention also has characteristics simple in structure, that reliability is high.
Preferably, oily separation system also comprises the support with hole, and primary oil gas separating device 10 is installed in the cavity of gear-box 20 by support.Like this, one-level is separated the lubricating oil obtain and can be flowed back to gear-box 20 under action of gravitation by the hole on the support.
Preferably, oily separation system also comprises the stop valve 70 that is installed on the oil return pipe 60.Can open the oil circuit of oil return pipe 60 by operating stop valve 70, the lubricating oil that the second-order separation is obtained flows in the gear-box 20.
Preferably, inspiratory component 40 comprises inner tube 41 and is enclosed within the outer tube 42 in inner tube 41 outsides, one end of inner tube 41 is connected with an end of outer tube 42, the other end of inner tube 41 forms air entry 45, be provided with air inlet 43 on the sidewall of outer tube 42, balance pipe 50 is connected with air inlet 43, and secondary gs-oil separator 30 is arranged in the annular gap between outer tube 42 and the inner tube 41.Like this, the mist that is entered by air inlet 43 must just can flow into air entry 45 through secondary gs-oil separator 30 first, thereby has reached the purpose of the second-order separation.
Preferably, secondary gs-oil separator 30 comprises annular sidewall 31 and the diapire 32 with hole; Be provided with flange 46 on the outer tube wall of inner tube 41; This other end of inner tube 41 passes the hole on the diapire 32, and annular sidewall 31 is resisted against on the boss 47 at air inlet 43 places of outer tube 42.Further, preferably, also be provided with lubricating oil outlet 44 on the sidewall of outer tube 42, oil return pipe 60 is connected with lubricating oil outlet 44.Like this, secondary gs-oil separator 30 has formed complete separating and filtering structure between air inlet 43 and air entry 45, so that the mist that is entered by air inlet 43 must just can enter air entry 45 by secondary gs-oil separator 30, prevent the phenomenon that filtered just flows into air entry 45, thereby further reduced the race oil mass.Preferably, balance pipe 50 directly is connected to air inlet 43 by gear-box 20.
As a second aspect of the present invention, a kind of oil separating method of centrifugal refigerating compressor is provided, comprise: at the gear-box 20 interior installation primary oil gas separating devices 10 of centrifugal refigerating compressor, separate in order to the lubricating oil in the gear-box 20 is carried out one-level with the mist of cold-producing medium; Secondary gs-oil separator 30 is installed at inspiratory component 40 places at centrifugal refigerating compressor; Utilize the mist after 30 pairs of one-levels of secondary gs-oil separator are separated to carry out the second-order separation, make secondary gs-oil separator 30 isolated lubricating oil flow into gear-box 20 through oil return pipe 60, make secondary gs-oil separator 30 isolated cold-producing mediums enter the air entry 45 of inspiratory component 40.
Preferably, with primary oil gas separating device 10 by being installed in the cavity of gear-box 20 with porose support.Like this, one-level is separated the lubricating oil obtain and can be flowed back to gear-box 20 under action of gravitation by the hole on the support.
Preferably, oil separating method also comprises: at oil return pipe 60 stop valve 70 is set.Can open the oil circuit of oil return pipe 60 by operating stop valve 70, the lubricating oil that the second-order separation is obtained flows in the gear-box 20.
As a third aspect of the present invention, a kind of centrifugal refigerating compressor is provided, comprise oily separation system, this oil separation system is that above-mentioned oil separates system.
The present invention has saved the system of complicated evaporimeter oil return, has improved reliability, has reduced cost.And the present invention can realize kind of refrigeration cycle substantially without oil, thereby improved heat exchange efficiency and the Energy Efficiency Ratio of unit.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the oil of a centrifugal refigerating compressor separates system, it is characterized in that, comprising:
Primary oil gas separating device (10), described primary oil gas separating device (10) are installed in the gear-box (20) of described centrifugal refigerating compressor;
Secondary gs-oil separator (30), described secondary gs-oil separator (30) are installed on the inspiratory component (40) of described centrifugal refigerating compressor;
Balance pipe (50), the mist of the isolated lubricating oil of described primary oil gas separating device (10) and cold-producing medium flow through successively described balance pipe (50) and described secondary gs-oil separator (30);
Oil return pipe (60) flows into described gear-box (20) by the isolated lubricating oil of described secondary gs-oil separator (30) through described oil return pipe (60); Entered the air entry (45) of described inspiratory component (40) by the isolated cold-producing medium of described secondary gs-oil separator (30).
2. oily separation according to claim 1 system is characterized in that, described oily separation system also comprises the support with hole, and described primary oil gas separating device (10) is installed in the cavity of described gear-box (20) by described support.
3. oily separation according to claim 1 system is characterized in that, described oily separation system also comprises the stop valve (70) that is installed on the described oil return pipe (60).
4. oily separation according to claim 1 system, it is characterized in that, described inspiratory component (40) comprises inner tube (41) and is enclosed within the outer tube (42) in described inner tube (41) outside, one end of described inner tube (41) is connected with an end of described outer tube (42), the other end of described inner tube (41) forms described air entry (45), be provided with air inlet (43) on the sidewall of described outer tube (42), described balance pipe (50) is connected with described air inlet (43), and described secondary gs-oil separator (30) is arranged in the annular gap between described outer tube (42) and the described inner tube (41).
5. oily separation according to claim 4 system is characterized in that described secondary gs-oil separator (30) comprises annular sidewall (31) and has the diapire (32) in hole; Be provided with flange (46) on the outer tube wall of described inner tube (41); The described other end of described inner tube (41) passes the hole on the described diapire (32), and described annular sidewall (31) is resisted against on the boss (47) that the described air inlet (43) of described outer tube (42) locates.
6. oily separation according to claim 4 system is characterized in that also be provided with lubricating oil outlet (44) on the sidewall of described outer tube (42), described oil return pipe (60) is connected with described lubricating oil outlet (44).
7. the oil separating method of a centrifugal refigerating compressor is characterized in that, comprising:
Primary oil gas separating device (10) is installed in the gear-box (20) of described centrifugal refigerating compressor, is separated in order to the lubricating oil in the described gear-box (20) is carried out one-level with the mist of cold-producing medium;
Inspiratory component (40) at described centrifugal refigerating compressor locates to install secondary gs-oil separator (30);
Utilize the mist after described secondary gs-oil separator (30) separates described one-level to carry out the second-order separation, make the isolated lubricating oil of described secondary gs-oil separator (30) flow into described gear-box (20) through oil return pipe (60), make the isolated cold-producing medium of described secondary gs-oil separator (30) enter the air entry (45) of described inspiratory component (40).
8. oil separating method according to claim 7 is characterized in that, with described primary oil gas separating device (10) by being installed in the cavity of described gear-box (20) with porose support.
9. oil separating method according to claim 7 is characterized in that, described oil separating method also comprises: at described oil return pipe (60) stop valve (70) is set.
10. centrifugal refigerating compressor comprises oily separation system, it is characterized in that, described oily separation system is each described oily separation system in the claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488224.2A CN102997522B (en) | 2012-11-26 | 2012-11-26 | Centrifugal refrigerating compressor, and oil separation system and oil separation method for centrifugal refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488224.2A CN102997522B (en) | 2012-11-26 | 2012-11-26 | Centrifugal refrigerating compressor, and oil separation system and oil separation method for centrifugal refrigerating compressor |
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| Publication Number | Publication Date |
|---|---|
| CN102997522A true CN102997522A (en) | 2013-03-27 |
| CN102997522B CN102997522B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210488224.2A Expired - Fee Related CN102997522B (en) | 2012-11-26 | 2012-11-26 | Centrifugal refrigerating compressor, and oil separation system and oil separation method for centrifugal refrigerating compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809701A (en) * | 2017-05-08 | 2020-02-18 | 艾默生环境优化技术有限公司 | Compressor with liquid start control |
| CN111927793A (en) * | 2020-06-15 | 2020-11-13 | 珠海格力电器股份有限公司 | Centrifugal compressor balance pipe assembly, centrifugal compressor and refrigerating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4213307A (en) * | 1978-11-13 | 1980-07-22 | Westinghouse Electric Corp. | Oil separation and return system for centrifugal refrigerant compressors |
| JPS59176491A (en) * | 1983-03-25 | 1984-10-05 | Anretsuto:Kk | Horizontal two-shaft compression pump |
| CN1439854A (en) * | 2002-02-19 | 2003-09-03 | 普莱克斯技术有限公司 | Working-fluid circulating system for compressor set |
| CN202195630U (en) * | 2011-07-25 | 2012-04-18 | 珠海格力电器股份有限公司 | Gas-liquid separation structure of compressor |
-
2012
- 2012-11-26 CN CN201210488224.2A patent/CN102997522B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4213307A (en) * | 1978-11-13 | 1980-07-22 | Westinghouse Electric Corp. | Oil separation and return system for centrifugal refrigerant compressors |
| JPS59176491A (en) * | 1983-03-25 | 1984-10-05 | Anretsuto:Kk | Horizontal two-shaft compression pump |
| CN1439854A (en) * | 2002-02-19 | 2003-09-03 | 普莱克斯技术有限公司 | Working-fluid circulating system for compressor set |
| CN202195630U (en) * | 2011-07-25 | 2012-04-18 | 珠海格力电器股份有限公司 | Gas-liquid separation structure of compressor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809701A (en) * | 2017-05-08 | 2020-02-18 | 艾默生环境优化技术有限公司 | Compressor with liquid start control |
| CN110809701B (en) * | 2017-05-08 | 2021-07-06 | 艾默生环境优化技术有限公司 | Compressor with liquid start control |
| CN111927793A (en) * | 2020-06-15 | 2020-11-13 | 珠海格力电器股份有限公司 | Centrifugal compressor balance pipe assembly, centrifugal compressor and refrigerating system |
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| Publication number | Publication date |
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| CN102997522B (en) | 2015-05-27 |
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