CN114704462A - Screw compressor unit with double lubricating oil ways for working - Google Patents
Screw compressor unit with double lubricating oil ways for working Download PDFInfo
- Publication number
- CN114704462A CN114704462A CN202210538448.3A CN202210538448A CN114704462A CN 114704462 A CN114704462 A CN 114704462A CN 202210538448 A CN202210538448 A CN 202210538448A CN 114704462 A CN114704462 A CN 114704462A
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- Prior art keywords
- lubricating oil
- screw compressor
- oil
- rotor
- inlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/021—Control systems for the circulation of the lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2280/00—Arrangements for preventing or removing deposits or corrosion
- F04C2280/04—Preventing corrosion
Abstract
The invention discloses a screw compressor unit with double lubricating oil paths, which comprises: the screw compressor is provided with a screw compressor air inlet end seal and a screw compressor exhaust end seal at two ends respectively; the bearing lubricating oil way is used for lubricating the outer side of the screw compressor and the supporting assembly; the rotor lubricating oil path is communicated with the interior of the screw compressor and can inject rotor lubricating oil into the screw compressor to form a lubricating oil film protective layer; and the bearing lubricating oil path and the rotor lubricating oil path are isolated from each other. The invention enables the bearing lubricating oil circuit and the rotor lubricating oil circuit to operate by adopting two completely independent lubricating oils, and the two lubricating oils are not mixed with each other and polluted, thereby prolonging the service life of the screw compressor under corrosive gas and reducing the consumption of the lubricating oil.
Description
Technical Field
The invention relates to the technical field of screw compressors, in particular to a screw compressor unit with double lubricating oil ways.
Background
At present, some screw compressors with oil-free structures spray water or diesel oil to compress process gas, and the water spray of screw compressor units containing corrosive media can corrode rotors, air suction end seats and exhaust end seats of the screw compressors, so that the service life of the screw compressors is greatly shortened; in order to reduce the influence of corrosion, diesel oil is sprayed, however, because the boiling point of the diesel oil is low, part of the diesel oil enters the process gas, and the consumption of the diesel oil is large, so that the increase of the service life of a screw compressor unit and the reduction of the consumption of the diesel oil are important economic values.
In the rotor lubricating oil screw compressor, the compressed process gas pollutes the lubricating oil due to impurities contained in the process gas, so that the bearing and the seal of the compressor are easily damaged, the service life of the lubricating oil is short, the oil is frequently changed, the operation cost is increased, and the damage of the compressor is caused.
Disclosure of Invention
In view of the above, it is necessary to provide a screw compressor unit with dual lubrication oil paths, which can increase the service life of the screw compressor unit, reduce the consumption of diesel oil, and shorten the service life of lubricating oil.
A screw compressor unit with double lubricating oil paths for working comprises:
the screw compressor is provided with a screw compressor air inlet end seal and a screw compressor exhaust end seal at two ends respectively;
the bearing lubricating oil way is used for lubricating the outer side of the screw compressor and the support assembly;
the rotor lubricating oil path is communicated with the interior of the screw compressor and can inject rotor lubricating oil into the screw compressor to form a lubricating oil film protective layer;
and the bearing lubricating oil path and the rotor lubricating oil path are isolated from each other.
In one embodiment, the support assembly comprises:
and the bearings are arranged on the left and right sides of the male screw rod and the left and right sides of the female screw rod.
In one embodiment, the bearing lubrication oil path includes:
the outlet of the oil tank is connected with the inlet of a bearing lubricating oil cooler through an oil pump, and the outlet of the bearing lubricating oil cooler is connected with the inlet of a bearing lubricating oil filter;
an inlet of the lubricating oil distributor is connected with an outlet of the bearing lubricating oil filter through an oil inlet main pipe, and outlets of the lubricating oil distributor are respectively arranged on the outer side of the sealing of the air inlet end of the screw compressor, the outer side of the sealing of the air outlet end of the screw compressor and the bearing;
and the oil return main pipe can recover lubricating oil returned by each bearing and the dynamic seal of the screw compressor, and is communicated with the oil tank.
In one embodiment, the rotor lubricating oil passage includes:
the oil-gas separator is internally provided with an oil core with a coalescence filtering function, the inlet of the oil-gas separator is communicated with the exhaust end of the screw compressor through a first exhaust pipe, the gas outlet end of the oil-gas separator is communicated with a second exhaust pipe, and the lubricating oil outlet end of the oil-gas separator is connected with the inlet of the rotor lubricating oil cooler;
and the inlet of the rotor lubricating oil filter is connected with the outlet of the rotor lubricating oil cooler, and the outlet of the rotor lubricating oil filter is communicated with the air inlet end of the screw compressor.
In one embodiment, the air inlet end of the screw compressor is connected with a compressor air inlet, and the compressor air inlet is connected with the bottom of the oil core.
In one embodiment, a pressure control valve is arranged between the gas outlet end of the oil-gas separator and the second exhaust pipe.
In one embodiment, the injection amount of the lubricating oil of the rotor lubricating oil path is designed to be 0.01-5% of the volume flow rate in the inlet state.
According to the screw compressor unit with the double-lubricating oil path working, the bearing lubricating oil path and the rotor lubricating oil path which are mutually isolated are adopted, wherein the bearing lubricating oil path provides lubrication for the bearing and other friction pairs of the screw compressor, the rotor lubricating oil path is filled with the other path of lubricating oil in the screw compressor to form a lubricating oil film protective layer on the surfaces of the rotor and the cylinder, the rotor and the cylinder body are isolated from being in direct contact with corrosive fluid, so that the corrosion resistance of the rotor and the cylinder body is improved, the process gas and the rotor are cooled and compressed, and meanwhile, the lubricating oil film protective layer also compensates gaps among the female rotor, the male rotor, the cylinder body and the exhaust end face, and the volumetric efficiency is improved. The design enables the bearing lubricating oil circuit and the rotor lubricating oil circuit to operate by adopting different lubricating oils, and the bearing lubricating oil circuit and the rotor lubricating oil circuit cannot be mixed and polluted with each other, so that the service life of the screw compressor under corrosive gas is prolonged, and the consumption of the lubricating oil is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a screw compressor unit in which a double lubrication circuit of the present invention works.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, an embodiment of the present invention provides a screw compressor set with two lubricating oil paths, including:
the screw compressor comprises a screw compressor 5, wherein a screw compressor air inlet end seal 3 and a screw compressor exhaust end seal 6 are respectively arranged at two ends of the screw compressor 5; in this embodiment, the screw compressor inlet end seal 3 and the screw compressor outlet end seal 6 can respectively seal the inlet end and the outlet end of the screw compressor 5, so that the inside of the screw compressor 5 is completely isolated from the outside, and a sealed compression cavity is formed.
A bearing lubrication oil passage, the lubrication oil of which can lubricate the outside of the screw compressor 5 and the support assembly;
the rotor lubricating oil circuit is a special oil circuit independent of the bearing lubricating oil circuit, specifically, the rotor lubricating oil circuit can form a lubricating oil film protective layer on the surfaces of the rotor and the cylinder, so that the direct contact between the rotor and the cylinder and corrosive fluid is isolated, the corrosion resistance of the rotor and the cylinder is improved, the compressed gas and the rotor are cooled, meanwhile, the lubricating oil film protective layer also compensates gaps among the female rotor, the male rotor, the cylinder and the exhaust end face, and the volumetric efficiency is improved.
And the bearing lubricating oil path and the rotor lubricating oil path are isolated from each other.
According to the screw compressor unit with the double-lubricating oil path, the bearing lubricating oil path and the rotor lubricating oil path which are mutually isolated are adopted, wherein the bearing lubricating oil path provides lubrication for a bearing and other friction pairs of the screw compressor, the rotor lubricating oil path is used for injecting the other path of lubricating oil into the screw compressor so as to form a lubricating oil film protective layer on the surfaces of the rotor and the cylinder, and the rotor and the cylinder body are isolated from being in direct contact with corrosive fluid, so that the corrosion resistance of the screw compressor unit is improved, and the compression process gas and the rotor are cooled; the design enables the bearing lubricating oil circuit and the rotor lubricating oil circuit to operate by adopting different oil liquids, and the bearing lubricating oil circuit and the rotor lubricating oil circuit cannot be mixed and polluted, so that the service life of the screw compressor under corrosive gas is prolonged, and the consumption of the lubricating oil is reduced.
In an embodiment of the present invention, the support assembly includes:
bearings 19 are provided on both left and right sides of the male screw 20 and both left and right sides of the female screw 18.
In an embodiment of the present invention, the bearing lubrication oil passage includes:
an oil tank 14, an outlet of the oil tank 14 is connected with an inlet of a bearing lubricating oil cooler 16 through an oil pump 15, and an outlet of the bearing lubricating oil cooler 16 is connected with an inlet of a bearing lubricating oil filter 17;
an inlet of the lubricating oil distributor 4 is connected with an outlet of the bearing lubricating oil filter 17 through an oil inlet header pipe 2, and outlets of the lubricating oil distributor 4 are respectively arranged on the outer side of the screw compressor air inlet end seal 3, the outer side of the screw compressor air outlet end seal 6 and a bearing 19;
and the oil return main pipe 13 is used for recovering lubricating oil returned by each bearing and the dynamic seal of the screw compressor 5, and the oil return main pipe 13 is communicated with the oil tank 14.
In this embodiment, the lubricating oil in the oil tank 14 is pumped into the bearing lubricating oil cooler 16 through the oil pump 15 for cooling, the cooled lubricating oil flows into the bearing lubricating oil filter 17 from the outlet of the bearing lubricating oil cooler 16 for filtering, the filtered lubricating oil enters the lubricating oil distributor 4, the lubricating oil distributor 4 can distribute the lubricating oil into a plurality of branch pipes, and then the lubricating oil is respectively injected into the outer side of the screw compressor air inlet end seal 3, the outer side of the screw compressor air outlet end seal 6, and the positions of the bearings 19 and the like through the corresponding branch pipes, and meanwhile, the lubricating oil at these positions is recovered into the oil tank 14 through the oil return header pipe 13, thereby completing the recycling of the lubricating oil.
In an embodiment of the present invention, the rotor lubricating oil passage includes:
an oil core 21 with a coalescence filtering function is installed in the oil-gas separator 10, an inlet of the oil-gas separator 10 is communicated with a gas exhaust end of the screw compressor 5 through a first gas exhaust pipe 7, a gas outlet end of the oil-gas separator 10 is communicated with a second gas exhaust pipe 9, and a lubricating oil outlet end of the oil-gas separator 10 is connected with an inlet of the rotor lubricating oil cooler 11;
and the inlet of the rotor lubricating oil filter 12 is connected with the outlet of the rotor lubricating oil cooler 11, and the outlet of the rotor lubricating oil filter 12 is communicated with the air inlet end of the screw compressor 5.
In this embodiment, the rotor lubricating oil in the rotor lubricating oil path is injected into the screw compressor 5 and then mixed with the process gas to generate an oil-gas mixture, the oil-gas mixture enters the oil-gas separator 10 through the first exhaust pipe 7 to be subjected to oil-gas separation, then, the separated oil is cooled through the rotor lubricating oil cooler 11, and the cooled oil is filtered through the rotor lubricating oil filter 12 and then injected into the screw compressor 5 again, so that the recycling of the rotor lubricating oil is completed.
In an embodiment of the present invention, an air inlet end of the screw compressor 5 is connected to a compressor air inlet 1, and the compressor air inlet 1 is connected to the bottom of the oil core 21, so that oil at the bottom of the oil core 21 enters the circulation of rotor lubricating oil again, thereby reducing the consumption of lubricating oil. In this embodiment, the compressor inlet 1 is used to convey a process gas into the screw compressor 5.
Optionally, a pressure control valve 8 is arranged between the gas outlet end of the oil-gas separator 10 and the second exhaust pipe 9, and the pressure control valve 8 can control the pressure of the oil-gas separator 10 to be always higher than the pressure of the air inlet of the screw compressor 5, so that the circulation of the bearing lubricating oil can be established by means of the pressure difference.
Optionally, the bottom of the oil core 21 at the bottom of the oil separator 10 is connected so that part of the lubricating oil filtered out by the oil core 21 is returned to the inlet of the screw compressor 5 to reduce the amount of entrained oil in the gas and the consumption of lubricating oil.
In this embodiment, the injection amount of the lubricant oil in the rotor lubricant oil path is designed not to exceed the range of 0.01% to 5% of the volume flow rate in the inlet state, and the specific injection amount is designed on the basis that the temperature of the discharge end of the screw compressor 5 is controlled to be higher than the dew point of the discharge pressure of the compressed gas by more than 5 ℃ according to the difference between the compressed gas and the pressure.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples are only illustrative of several embodiments of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides a screw compressor unit of two lubricated oil circuit work which characterized in that includes:
the screw compressor (5), both ends of the said screw compressor (5) are equipped with the air inlet end seal (3) of the screw compressor and air outlet end seal (6) of the screw compressor separately;
the bearing lubricating oil way is used for lubricating the outer side of the screw compressor (5) and the supporting assembly;
the rotor lubricating oil path is communicated with the interior of the screw compressor (5), and can inject rotor lubricating oil into the screw compressor (5) to form a lubricating oil film protective layer;
wherein the bearing lubricating oil path and the rotor lubricating oil path are isolated from each other.
2. The dual lubrication circuit working screw compressor package of claim 1, wherein said support assembly comprises:
and bearings (19) provided on the left and right sides of the male screw (20) and the left and right sides of the female screw (18).
3. The dual lubrication circuit operating screw compressor package of claim 2, wherein said bearing lubrication circuit comprises:
an oil tank (14), wherein an outlet of the oil tank (14) is connected with an inlet of a bearing lubricating oil cooler (16) through an oil pump (15), and an outlet of the bearing lubricating oil cooler (16) is connected with an inlet of a bearing lubricating oil filter (17);
an inlet of the lubricating oil distributor (4) is connected with an outlet of the bearing lubricating oil filter (17) through an oil inlet header pipe (2), and outlets of the lubricating oil distributor (4) are respectively arranged on the outer side of the screw compressor air inlet end seal (3), the outer side of the screw compressor air outlet end seal (6) and a bearing (19);
the oil return main pipe (13), the oil return main pipe (13) can retrieve the lubricating oil that each bearing of screw compressor (5) and dynamic seal returned, just oil return main pipe (13) with oil tank (14) are linked together.
4. The dual lubrication circuit working screw compressor package of claim 1, wherein said rotor lubrication circuit comprises:
the oil-gas separator (10), an oil core (21) with a coalescence filtering function is installed in the oil-gas separator (10), an inlet of the oil-gas separator (10) is communicated with a gas exhaust end of the screw compressor (5) through a first gas exhaust pipe (7), a gas outlet end of the oil-gas separator (10) is communicated with a second gas exhaust pipe (9), and a lubricating oil outlet end of the oil-gas separator (10) is connected with an inlet of the rotor lubricating oil cooler (11);
the inlet of the rotor lubricating oil filter (12) is connected with the outlet of the rotor lubricating oil cooler (11), and the outlet of the rotor lubricating oil filter (12) is communicated with the air inlet end of the screw compressor (5).
5. Screw compressor group with double lubrication circuit operation according to claim 4, characterized in that the inlet end of the screw compressor (5) is connected to the compressor inlet (1), and the compressor inlet (1) is connected to the bottom of the oil core (21).
6. Screw compressor group with double lubrication circuit working according to claim 4 or 5, characterized in that a pressure control valve (8) is arranged between the gas outlet end of the gas-oil separator (10) and the second gas outlet pipe (9).
7. The screw compressor unit of claim 1, wherein the injection amount of the lubricant oil of the rotor lubricant oil path is set to 0.01-5% of the volume flow rate in the inlet state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210538448.3A CN114704462A (en) | 2022-05-18 | 2022-05-18 | Screw compressor unit with double lubricating oil ways for working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210538448.3A CN114704462A (en) | 2022-05-18 | 2022-05-18 | Screw compressor unit with double lubricating oil ways for working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114704462A true CN114704462A (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210538448.3A Pending CN114704462A (en) | 2022-05-18 | 2022-05-18 | Screw compressor unit with double lubricating oil ways for working |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114704462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115507034A (en) * | 2022-10-24 | 2022-12-23 | 冰轮环境技术股份有限公司 | Lubricating oil circulation system of oil injection screw compressor |
-
2022
- 2022-05-18 CN CN202210538448.3A patent/CN114704462A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115507034A (en) * | 2022-10-24 | 2022-12-23 | 冰轮环境技术股份有限公司 | Lubricating oil circulation system of oil injection screw compressor |
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