CN114718847B - Reciprocating compressor lubricating oil cooling system and using method - Google Patents
Reciprocating compressor lubricating oil cooling system and using method Download PDFInfo
- Publication number
- CN114718847B CN114718847B CN202210321986.7A CN202210321986A CN114718847B CN 114718847 B CN114718847 B CN 114718847B CN 202210321986 A CN202210321986 A CN 202210321986A CN 114718847 B CN114718847 B CN 114718847B
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- Prior art keywords
- switching valve
- oil cooler
- temperature
- oil
- detection unit
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 44
- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title abstract description 14
- 239000003921 oil Substances 0.000 claims abstract description 90
- 238000001514 detection method Methods 0.000 claims abstract description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000010725 compressor oil Substances 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/0276—Lubrication characterised by the compressor type the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention discloses a reciprocating compressor lubricating oil cooling system and a using method thereof, wherein the reciprocating compressor lubricating oil cooling system comprises the following steps: a first oil cooler provided with a first outlet and a first inlet; the first inlet is connected with a reciprocating compressor; a temperature detection unit that detects a temperature of the lubricating oil; the controller is connected with the temperature detection unit and the first oil cooler, receives the temperature detected by the temperature detection unit and sends a control command to control the cooling efficiency of the first oil cooler; the switching valve adjusts the state of the switching valve according to the control instruction of the controller; the switching valve comprises a first switching valve and a second switching valve, the first switching valve is arranged at the first inlet, and the second switching valve is arranged at the first outlet. The invention can reach the operation technical index without manual adjustment for many times in the cooling process, and simultaneously ensures the heat exchange efficiency.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a reciprocating compressor lubricating oil cooling system and a using method thereof.
Background
In a lubricating oil system of a reciprocating compressor, a lubricating oil cooler needs to be provided. The lubricating oil cooler is used for taking away heat generated by lubricating oil in the mechanical lubrication process, maintaining the stability of the working temperature of the lubricating oil and keeping good working performance. The excessive temperature of the lubricating oil can cause the viscosity of the lubricating oil to be reduced, the lubricating capability to be reduced and the equipment to be easily abraded.
Most of lubricating oil coolers of the existing reciprocating compressor adopt a structure of a water-cooled shell-and-tube heat exchanger, the working temperature of lubricating oil is adjusted manually in a cooling water quantity adjusting mode, the technical index of operation can be reached by manual adjustment for multiple times, and time and labor are wasted. In addition, in many areas in northern China, due to the reason of the quality of circulating water, the oil cooler adopting the water-cooled shell-and-tube structure can generate the phenomenon of scaling on the water side after running for a period of time, so that the heat exchange effect is sharply reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a reciprocating compressor lubricating oil cooling system and a using method thereof, which can achieve the operation technical index without manual operation adjustment for many times and have good heat exchange effect.
The purpose of the invention is realized by adopting the following technical scheme: a reciprocating compressor lubricant cooling system comprising:
a first oil cooler provided with a first outlet and a first inlet; the first inlet is connected with a reciprocating compressor;
a temperature detection unit that detects a temperature of the lubricating oil;
the controller is connected with the temperature detection unit and the first oil cooler, receives the temperature detected by the temperature detection unit and sends a control command to control the cooling efficiency of the first oil cooler;
the switching valve adjusts the state of the switching valve according to the control instruction of the controller; the switching valve includes a first switching valve disposed at the first inlet and a second switching valve disposed at the first outlet.
Further, the oil cooler also comprises a second oil cooler which is provided with a second outlet and a second inlet; the second inlet and the second outlet are respectively provided with a third switching valve and a fourth switching valve; and a second outlet of the second oil cooler is connected with the temperature detection unit through a fourth switching valve.
Further, the controller adjusts the states of the third switching valve and the fourth switching valve according to the temperature detected by the temperature detection unit, and sends a control command to control the working state of the second oil cooler.
Furthermore, the temperature detection unit comprises a temperature sensor and a bimetal thermometer, and the temperature sensor is respectively connected with the first outlet and the second outlet through a second switching valve and a fourth switching valve; the bimetal thermometer is respectively connected with the first inlet and the second inlet through the first switching valve and the third switching valve.
Further, the first oil cooler and the second oil cooler are both air-cooled oil coolers, the first oil cooler and the second oil cooler are both provided with an axial flow fan and a heat exchange copper pipe, the heat exchange copper pipe is provided with outer fins, and the axial flow fan operates to drive air on the outer fin side to flow.
Further, the axial flow fan adopts a variable frequency motor, and the controller adjusts the cooling efficiency of the first oil cooler by controlling the variable frequency motor of the first oil cooler.
Further, the first switching valve, the second switching valve, the third switching valve and the fourth switching valve are all pneumatic switching valves.
The second purpose of the invention is realized by adopting the following technical scheme:
a method for using a reciprocating compressor lubricating oil cooling system, which is applied to a controller of the reciprocating compressor lubricating oil cooling system, the method comprises the following steps:
step S1, a receiving temperature detection unit detects the temperature of lubricating oil cooled by a first oil cooler;
and S2, adjusting the rotating speed of an axial flow fan in the first oil cooler according to the temperature, so as to control the cooling efficiency of the first oil cooler until the temperature detected by the temperature detection unit is equal to a preset threshold value.
Further, the method also comprises the following steps:
s3, judging whether the temperature detected by the temperature detection unit is greater than a preset threshold value, and if so, judging whether the rotating speed of an axial flow fan of the first oil cooler reaches the maximum value; and when the rotating speed of the axial flow fan of the first oil cooler reaches the maximum value, the first switching valve, the second switching valve and the first oil cooler are controlled to be closed, and the third switching valve, the fourth switching valve and the second oil cooler are controlled to be opened and cooled by the second oil cooler.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a reciprocating compressor lubricating oil cooling system and a using method thereof.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic flow chart of an embodiment of the present invention.
In the figure: 1. a first oil cooler; 2. a first switching valve; 3. a second switching valve; 4. a second oil cooler; 5. a third switching valve; 6. a fourth switching valve; 7. a bimetallic thermometer; 8. a temperature sensor; 9. a variable frequency motor; 10. and a controller.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in figure 1, the invention provides a reciprocating compressor lubricating oil cooling system which is applied to cooling lubricating oil of a small reciprocating compressor, can achieve operation technical indexes without manual adjustment for many times and has good heat exchange effect.
Specifically, the system comprises a first oil cooler 1, a temperature detection unit, a controller 10 and a switching valve, wherein the first oil cooler 1 is provided with a first outlet and a first inlet, the first inlet is connected with a reciprocating compressor, and lubricating oil enters the first oil cooler 1 through the first inlet. The temperature detection unit detects the temperature of the lubricating oil. The controller 10 is connected to the temperature sensor 8 and the first oil cooler 1, receives the temperature detected by the temperature detection unit, and sends a control command to control the cooling efficiency of the first oil cooler 1. The switching valve adjusts the state of the switching valve according to the control instruction of the controller 10; the switching valve comprises a first switching valve 2 and a second switching valve 3, the first switching valve 2 is arranged at the first inlet, and the second switching valve 3 is arranged at the first outlet.
When the first switching valve 2 and the second switching valve 3 are opened, the lubricating oil of the dual compressor enters the first oil cooler 1 through the first inlet via the first switching valve 2, and is cooled by the first oil cooler 1. The temperature detection unit is arranged outside the first outlet to detect the temperature of the cooled lubricating oil. The controller 10 controls the cooling efficiency of the first oil cooler 1 according to the temperature detected by the temperature detecting unit, so as to better cool the lubricating oil and improve the cooling efficiency.
Furthermore, in the present embodiment, a second oil cooler 4 is further provided, and is used alternatively with the first oil cooler 1, so as to improve the operation reliability, and simultaneously avoid the problem that the first oil cooler 1 fails and cannot cool the lubricating oil in time. The second oil cooler 4 is provided with a second outlet and a second inlet, similar to the first oil cooler 1; the second inlet and the second outlet are respectively provided with a third switching valve 5 and a fourth switching valve 6; a second outlet of the second oil cooler 4 is connected to the temperature detection unit via a fourth switching valve 6. The temperature detection unit can also detect the temperature of the lubricating oil cooled by the second oil cooler 4. And the first switching valve 2, the second switching valve 3, the third switching valve 5 and the fourth switching valve 6 are all pneumatic switching valves, so that the control is convenient.
The temperature detection unit comprises a temperature sensor 8 and a bimetal thermometer 7, wherein the temperature sensor 8 is respectively connected with a first outlet and a second outlet through a second switching valve and a fourth switching valve; the bimetal thermometer 7 is respectively connected with the first inlet and the second inlet through the first switching valve and the third switching valve. The bimetal thermometer 7 detects the temperature of uncooled lubricating oil, and the temperature sensor 8 detects the temperature of the cooled lubricating oil, so that the cooling efficiency of the system can be calculated more accurately.
First oil cooler 1 and second oil cooler 4 are air-cooled oil cooler, first oil cooler 1 and second oil cooler 4 all are provided with axial fan, heat transfer copper pipe, and heat transfer copper pipe outband fin, axial fan operation, the reinforcing first oil cooler 1 or the air flow of the outer fin side of second oil cooler 4, take away the unnecessary heat of the lubricating oil that flows in the copper pipe, play the cooling effect. The motor of the axial flow fan adopts a variable frequency motor 9, and the running rotating speed can be adjusted according to the control instruction of a controller 10, so that the blast flow of the axial flow fan is adjusted.
High-temperature lubricating oil from the oil tank of the small reciprocating compressor is pressurized by the oil pump and then enters the first oil cooler 1 to be cooled, and the temperature sensor 8 detects the temperature of the lubricating oil passing through the first oil cooler 1 and transmits a detected temperature signal to the controller 10. The program controller 10 sends a control instruction of adjusting the rotating speed to the axial flow fan of the first oil cooler 1 according to a preset threshold, and the axial flow fan continuously adjusts the running rotating speed until the temperature is equal to the preset threshold.
If the running rotating speed of the axial flow fan of the first oil cooler 1 reaches the maximum value, but the temperature detection value is still larger than the preset threshold value, the controller 10 sends an instruction, and the third switching valve 5 and the fourth switching valve 6 are automatically opened; the first switching valve 2 and the second switching valve 3 are automatically closed; the first oil cooler 1 stops operating and the second oil cooler 4 automatically starts operating. Meanwhile, the controller 10 sends a fault signal of the first oil cooler 1 to remind a worker to perform maintenance.
Based on the same invention idea, the application also provides a using method of the system, which comprises the following steps:
step S1, a receiving temperature detection unit detects the temperature of lubricating oil cooled by a first oil cooler;
and S2, adjusting the rotating speed of an axial flow fan in the first oil cooler according to the temperature, so as to control the cooling efficiency of the first oil cooler until the temperature detected by the temperature detection unit is equal to a preset threshold value.
S3, judging whether the temperature detected by the temperature detection unit is greater than a preset threshold value or not, and if so, judging whether the rotating speed of an axial flow fan of the first oil cooler reaches the maximum value or not; and if the rotating speed of the axial flow fan of the first oil cooler reaches the maximum value, controlling the first switching valve, the second switching valve and the first oil cooler to be closed, and controlling the third switching valve, the fourth switching valve and the second oil cooler to be opened so as to be cooled by the second oil cooler.
The invention provides a reciprocating compressor lubricating oil cooling system and a using method thereof.A first oil cooler 1 is used for cooling the lubricating oil of a reciprocating compressor, a temperature detection unit detects the temperature of the lubricating oil in real time, a controller 10 adjusts the cooling efficiency of the first oil cooler 1 according to the temperature of the lubricating oil, the technical operating index can be reached without manual operation adjustment for many times in the cooling process, and meanwhile, the heat exchange efficiency is ensured.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Claims (6)
1. A reciprocating compressor lubricant cooling system, comprising:
a first oil cooler provided with a first outlet and a first inlet; the first inlet is connected with a reciprocating compressor;
the second oil cooler is provided with a second outlet and a second inlet;
a temperature detection unit that detects a temperature of the lubricating oil;
the controller is connected with the temperature detection unit and the first oil cooler, receives the temperature detected by the temperature detection unit and sends a control command to control the cooling efficiency of the first oil cooler;
the switching valve adjusts the state of the switching valve according to the control instruction of the controller; the switching valves comprise a first switching valve, a second switching valve, a third switching valve and a fourth switching valve, wherein the first switching valve is arranged at the first inlet, the second switching valve is arranged at the first outlet, the third switching valve is arranged at the second inlet, and the fourth switching valve is arranged at the second outlet; a second outlet of the second oil cooler is connected with the temperature detection unit through a fourth switching valve;
the controller performs the steps of:
step S1, a receiving temperature detection unit detects the temperature of lubricating oil cooled by a first oil cooler;
s2, adjusting the rotating speed of an axial flow fan in the first oil cooler according to the temperature so as to control the cooling efficiency of the first oil cooler until the temperature detected by the temperature detection unit is equal to a preset threshold value;
s3, judging whether the temperature detected by the temperature detection unit is greater than a preset threshold value or not, and if so, judging whether the rotating speed of an axial flow fan of the first oil cooler reaches the maximum value or not; and if the rotating speed of the axial flow fan of the first oil cooler reaches the maximum value, controlling the first switching valve, the second switching valve and the first oil cooler to be closed, and controlling the third switching valve, the fourth switching valve and the second oil cooler to be opened so as to be cooled by the second oil cooler.
2. The reciprocating compressor oil cooling system of claim 1, wherein said controller adjusts the state of said third switching valve and said fourth switching valve according to the temperature detected by said temperature detecting unit, and issues a control command to control the operation state of said second oil cooler.
3. The lubricating oil cooling system of claim 1, wherein the temperature detecting unit comprises a temperature sensor and a bimetal thermometer, the temperature sensor is connected to the first outlet and the second outlet respectively through the second switching valve and the fourth switching valve; the bimetal thermometer is respectively connected with the first inlet and the second inlet through the first switching valve and the third switching valve.
4. The system of claim 1, wherein the first oil cooler and the second oil cooler are both air-cooled oil coolers, and the first oil cooler and the second oil cooler are both provided with an axial fan and a heat exchange copper pipe, the heat exchange copper pipe is provided with external fins, and the axial fan operates to drive air on the external fins to flow.
5. The reciprocating compressor oil cooling system of claim 4, wherein said axial fan employs an inverter motor, and said controller adjusts the cooling efficiency of said first oil cooler by controlling the inverter motor of said first oil cooler.
6. The lubricating oil cooling system for a reciprocating compressor according to claim 1, wherein said first switching valve, said second switching valve, said third switching valve and said fourth switching valve are pneumatic switching valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210321986.7A CN114718847B (en) | 2022-03-29 | 2022-03-29 | Reciprocating compressor lubricating oil cooling system and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210321986.7A CN114718847B (en) | 2022-03-29 | 2022-03-29 | Reciprocating compressor lubricating oil cooling system and using method |
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| CN114718847A CN114718847A (en) | 2022-07-08 |
| CN114718847B true CN114718847B (en) | 2022-12-30 |
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| CN202210321986.7A Active CN114718847B (en) | 2022-03-29 | 2022-03-29 | Reciprocating compressor lubricating oil cooling system and using method |
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| EP2339265B1 (en) * | 2009-12-25 | 2018-03-28 | Sanyo Electric Co., Ltd. | Refrigerating apparatus |
| JP7190963B2 (en) * | 2019-05-23 | 2022-12-16 | コベルコ・コンプレッサ株式会社 | Oil-cooled screw compressor |
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2022
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| CN112963332A (en) * | 2021-02-25 | 2021-06-15 | 胡红婷 | Lubricating oil cooling system of air compressor and control method thereof |
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| CN114718847A (en) | 2022-07-08 |
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Address after: No. 27-28, 7th floor, building 12, Shenzhen Bay science and technology ecological park, No. 18, South Keji Road, high tech community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Haige Jingu Industrial Technology Co.,Ltd. Address before: No. 27-28, 7th floor, building 12, Shenzhen Bay science and technology ecological park, No. 18, South Keji Road, high tech community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN THRESHOLD INDUSTRIAL TECHNOLOGY CO.,LTD. |
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