CN114934894B - Marine high-pressure air compressor lubricating oil temperature control system and control method thereof - Google Patents
Marine high-pressure air compressor lubricating oil temperature control system and control method thereof Download PDFInfo
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- CN114934894B CN114934894B CN202210328548.3A CN202210328548A CN114934894B CN 114934894 B CN114934894 B CN 114934894B CN 202210328548 A CN202210328548 A CN 202210328548A CN 114934894 B CN114934894 B CN 114934894B
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 238000001816 cooling Methods 0.000 claims abstract description 61
- 239000003921 oil Substances 0.000 claims description 63
- 238000010438 heat treatment Methods 0.000 claims description 40
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 17
- 239000000498 cooling water Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004945 emulsification Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 3
- 239000000314 lubricant Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Compressor (AREA)
Abstract
The invention provides a temperature control system and a control method for lubricating oil of a marine high-pressure air compressor. According to the scheme, the temperature control device can heat the lubricating oil in the crankcase of the air compressor to 65-68 ℃ in advance before the air compressor is started, so that the overlarge temperature drop when high-temperature wet air enters the crankcase of the air compressor is avoided, and meanwhile, the cooling unit is added to prevent the lubricating oil with the overlarge temperature from rapidly rising to a threshold value which is higher than 70 ℃ after the air compressor is started. The scheme main effect in this application is the moisture in preventing the production of comdenstion water and not simple removal lubricating oil, and this application reduces lubricating oil and moisture's contact in the root cause, reduces lubricating oil's emulsification probability and promotes its life.
Description
Technical Field
The invention relates to the field of air compressors, in particular to a lubricating oil temperature control system and a control method for a marine high-pressure air compressor.
Background
Because of special environmental requirements of the marine high-pressure air compressor, most of the marine high-pressure air compressor adopts a water-cooled piston air compressor, three-to-four-stage compression is carried out, the piston mainly adopts single action, 2-6% of compressed gas is leaked into a crankcase at each stage when the compressor works, the leaked compressed air is high-temperature (100-180 ℃) wet air with saturated water content, the temperature of the internal space of the crankcase is generally 30-70 ℃, the temperature of the air compressor is only 30-40 ℃ when the oil temperature of the air compressor is not quickly increased, at the moment, the high-temperature wet air can be rapidly cooled when entering the internal space of the crankcase, then partial condensed water is separated out, the condensed water remains at the bottom of the crankcase, the daily accumulation of months occurs, the condensed water quantity is obviously increased, further, the suction inlet of an oil pump is reached, the condensed water enters a lubricating system along with the oil pump, the oil film requirements of a crankshaft, a connecting rod and a bearing bush are seriously damaged when running at high speed, and lubricating oil is emulsified.
Chinese patent CN11092558A discloses a method for heating lubricating oil and removing condensed water of air compressor and air compressor, which comprises setting oil-gas separating cylinder, then placing mixed lubricating oil and water into the oil-gas separating cylinder for heating to remove water, so as to achieve separation of condensed water and prevent lubricating oil from emulsifying. However, for separating condensate water, the heating temperature needs to reach more than 100 ℃ to achieve a better separation effect, and the oil temperature in the crankcase of the air compressor in the national standard GB/T12929 high-pressure piston air compressor for ships has a forced requirement of not more than 70 ℃, so that the oil temperature in the crankcase of the air compressor is excessively high due to overheating once the condensate water is excessively heated, and potential safety hazards exist. In addition, condensed water in the scheme can firstly enter the lubricating oil and then be separated, so that the performance of the lubricating oil can be influenced even if the lubricating oil is separated due to the fact that the lubricating oil is mixed with more condensed water.
The Chinese patent CN213270210U discloses an automatic water removing device for a crank case of a piston type medium-pressure air compressor of a hydropower plant, which adopts the scheme that a heater and a temperature control switch are arranged in the crank case, the temperature in the crank case is kept at about 60 ℃, however, the generation of condensed water cannot be prevented at all at 60 ℃, meanwhile, the temperature in the crank case can be kept at more than 60 ℃ only by means of a heating device, the temperature in the crank case cannot be kept at more than 70 ℃, and the temperature in a lubricating oil tank is easy to rise rapidly due to the fact that lubricating oil falling back from the crank case exceeds 70 ℃, so that potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a marine high-pressure air compressor lubricating oil temperature control system capable of reducing the condensate water production and a control method thereof.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the temperature control system for the lubricating oil of the marine high-pressure air compressor comprises an air compressor crankcase, wherein a temperature control device is arranged in the air compressor crankcase, the temperature in the air compressor crankcase is maintained to be 65-68 ℃, and the temperature control device comprises a heating unit and a cooling unit; the temperature control device comprises a temperature sensor and a control unit, wherein the temperature sensor and the control unit form signal connection, the control unit controls the heating unit and the cooling unit to work, and the temperature sensor comprises an upper layer sensor arranged above the cooling unit and a lower layer sensor arranged below the cooling unit.
According to the scheme, the temperature control device can heat the lubricating oil in the crankcase of the air compressor to 65-68 ℃ in advance before the air compressor is started, so that the overlarge temperature drop when high-temperature wet air enters the crankcase of the air compressor is avoided, and meanwhile, the cooling unit is added to prevent the lubricating oil with the overlarge temperature from rapidly rising to a threshold value which is higher than 70 ℃ after the air compressor is started. The scheme main effect in this application is the moisture in preventing the production of comdenstion water and not simple removal lubricating oil, and this application reduces lubricating oil and moisture's contact in the root cause, reduces lubricating oil's emulsification probability and promotes its life. The control unit controls the heating unit and the cooling unit to work, namely, the control unit controls the opening and closing and the power of the heating unit, and the control unit controls the opening and closing of the cooling unit and the flow of cooling water.
Preferably, the heating unit is disposed at the bottom of the crankcase of the air compressor, and the cooling unit is disposed at the lower portion of the crankcase of the air compressor and is immersed in the lubricating oil.
Preferably, the upper part of the crankcase of the air compressor is provided with a crankshaft, the lower part of the crankcase of the air compressor is communicated with an oil pipe, the oil pipe is connected with an oil pump and supplies oil for the crankshaft, the lower layer sensor is arranged at the joint of the oil pipe and the lower part of the crankcase of the air compressor, and the oil pipe is sequentially provided with an oil filter, a one-way valve, the oil pump and an oil pressure gauge along the flowing direction of lubricating oil.
Preferably, the cooling unit comprises a water inlet pipe and a water outlet pipe which are arranged in parallel, the planes of the water inlet pipe and the water outlet pipe are parallel to the horizontal plane, the water inlet pipe and the water outlet pipe are communicated through a water diversion pipe, the length direction of the water diversion pipe is perpendicular to the length direction of the water inlet pipe and the water outlet pipe, a plurality of water diversion pipes are arranged at intervals in parallel, and heat exchange fins are arranged on the pipe wall of the water diversion pipe.
Preferably, the water inlet pipe is provided with an electromagnetic proportional ball valve controlled by a control unit.
Preferably, the top of the crankcase of the air compressor is communicated with a breathing tube, the breathing tube comprises a vertical tube section and a folded tube section, and the included angle between the vertical tube section and the folded tube section is smaller than 90 degrees.
Preferably, one end of the folded pipe section is communicated with a primary air inlet cavity of the air compressor.
Preferably, a heat preservation pipe is sleeved on the pipe wall of the breathing pipe.
Preferably, a heater is sleeved on the pipe wall of the breathing pipe.
A control method of a lubricating oil temperature control system of a marine high-pressure air compressor comprises the following steps:
s1, preparing to start the air compressor, detecting the temperature of lower lubricating oil in a crankcase of the air compressor through a lower sensor, if the temperature is lower than 65 ℃, entering a step S2, otherwise, entering a step S3;
s2, starting a heating unit to heat lubricating oil at the bottom of a crankcase of the air compressor to 65 ℃;
s3, starting the air compressor, and enabling an oil pump to press and send lubricating oil at the bottom of a crankcase of the air compressor to a crankshaft;
s4, heating the lubricating oil to 80 ℃ under the friction action of the crankshaft and the bearing bush;
s5, lubricating oil at the crankshaft falls into the bottom of a crankcase of the air compressor under the action of gravity, the cooling unit is started when the temperature of the lubricating oil above the cooling unit exceeds 68 ℃, the cooling unit is closed when the temperature of the lubricating oil above the cooling unit is lower than 65 ℃, the heating unit is closed when the temperature of the lubricating oil below the cooling unit exceeds 68 ℃, the heating unit is started when the temperature of the lubricating oil below the cooling unit is lower than 65 ℃, and the control unit controls the cooling water flow of the cooling unit to maintain the temperature of the lubricating oil in the crankcase at 65-68 ℃.
The method comprises the steps of preheating the air compressor before starting to prevent condensate water, and further heating part of lubricating oil at the crankshaft to remove water in the lubricating oil, so that the water in the lubricating oil is reduced to the greatest extent in a preheating and reheating mode.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the cooling unit;
reference numerals illustrate: 10. a crankcase of the air compressor; 11. a crankshaft; 20. a heating unit; 30. a cooling unit; 31. a water inlet pipe; 32. a water outlet pipe; 33. a water diversion pipe; 34. a heat exchange fin; 35. an electromagnetic proportional ball valve; 40. a control unit; 50. an upper sensor; 60. a lower layer sensor; 70. an oil pipe; 71. oil filtering; 72. a one-way valve; 73. an oil pump; 80. a breathing tube; 81. a vertical pipe section; 82. a tube folding section; 90. the air compressor is provided with a primary air inlet cavity.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the description of the present invention, it should be noted that the terms "bottom," "outside," "front-to-back," and the like indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the state of use of the present application, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and defined otherwise, the term "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The oil cooling device comprises an air compressor crankcase 10, wherein a temperature control device is arranged in the air compressor crankcase 10, the temperature control device maintains the temperature of lubricating oil in the air compressor crankcase 10 at 65-68 ℃, and the temperature control device comprises a heating unit 20 and a cooling unit 30; the temperature control device comprises a temperature sensor and a control unit 40, the temperature sensor is in signal connection with the control unit 40, the control unit 40 controls the heating unit 20 and the cooling unit 30 to work, and the temperature sensor comprises an upper layer sensor 50 arranged above the cooling unit 30 and a lower layer sensor 60 arranged below the cooling unit 30.
The numerical range 65-68 ℃ in the scheme is the optimal numerical range obtained by the applicant through multiple experiments, when the temperature is lower than 65 ℃, high-temperature wet air enters, more condensed water is generated, when the oil temperature exceeds 68 ℃, even if the oil temperature does not exceed 70 ℃, the oil temperature exceeds 70 ℃ under the operation of the air compressor, so that the limitation of the oil temperature of the air compressor in the national standard GB/T12929 of high-pressure piston air compressor for ships is not met. The temperature control device can heat the lubricating oil in the crankcase 10 of the air compressor to 65-68 ℃ in advance before the air compressor is started, so that the excessive temperature drop when high-temperature wet air enters the crankcase 10 of the air compressor is avoided, and meanwhile, the cooling unit is added so as to prevent the lubricating oil with the excessive temperature from rapidly rising to a threshold value exceeding 70 ℃ after the air compressor is started. In addition, the heating unit in the application can enable the existing heating modes such as resistance wire heating and medium heat exchange, and the cooling unit can be selected as the existing cooling modes such as medium heat exchange and air cooling, wherein the mode of water cooling medium heat exchange is preferred, the scheme in the application mainly aims at preventing the generation of condensed water instead of simply removing the moisture in the lubricating oil, the application fundamentally reduces the contact between the lubricating oil and the moisture, and reduces the emulsification probability of the lubricating oil so as to prolong the service life of the lubricating oil. The control unit 40 receives temperature signals of upper and lower layers of the lubricating oil to correspondingly activate the heating unit 20 and the cooling unit 30 and control the power of the heating unit 20 and the water flow rate of the cooling unit 30. Because lubricating oil is not an efficient heat conducting material, the temperature of the lubricating oil is unevenly distributed, and particularly, the temperature of an upper layer and a lower layer of the lubricating oil in the application have large difference, so that the oil temperature of the upper layer and the lower layer of the lubricating oil are required to be detected respectively. Wherein the control unit controls the heating unit 20 and the cooling unit 30 to work, namely, the control unit 40 controls the opening and closing and the power of the heating unit 20, and the control unit 40 controls the opening and closing of the cooling unit 30 and the flow of cooling water
Preferably, the heating unit 20 is disposed at the bottom of the air compressor crankcase 10, and the cooling unit 30 is disposed at the lower portion of the air compressor crankcase 10 and is immersed in the lubricating oil. The higher temperature lubricant oil will float up with a smaller density, so that the peripheral lubricant oil will float up after the bottom heating unit 20 heats the lubricant oil, thereby forming a flow that is convenient for heating all the lubricant oil, while the lower temperature lubricant oil will sink with a larger density, thus providing the cooling unit 30 at the lower part of the air compressor crankcase 10 instead of at the bottom.
Preferably, the upper portion of the air compressor crankcase 10 is provided with a crankshaft 11, the lower portion of the air compressor crankcase 10 is communicated with an oil pipe 70, the oil pipe 70 is connected with an oil pump 73 and supplies oil to the crankshaft 11, the lower sensor 60 is arranged at a joint of the oil pipe 70 and the lower portion of the air compressor crankcase 10, and the oil pipe 70 is sequentially provided with an oil filter 71, a check valve 72, the oil pump 73 and an oil pressure gauge 74 along the flowing direction of lubricating oil. The check valve 72 is provided before the oil pump 73 to prevent oil return at the oil pump, and the oil pressure gauge 74 is provided downstream of the oil pump 73 because the oil pump builds up oil pressure at the oil outlet position. The lower sensor 60 is provided at the junction of the oil pipe 70 and the lower portion of the air compressor crankcase 10 to ensure the reliability of temperature control. In the above scheme, the lubricating oil at the bottom of the crankcase 10 of the air compressor is pumped to the crankshaft 11 through the oil filter 71 and the check valve 72 under the action of the oil pump 73, the lubricating oil at the position is heated to more than 80 ℃ due to the friction between the crankshaft 11 and the bearing bush, the local heating of the lubricating oil does not violate national standard GB/T12929, the contact area of the lubricating oil with air is increased, and the water in the oil can be further separated under the action of high temperature above 80 ℃.
As shown in fig. 2, the cooling unit 30 includes a water inlet pipe 31 and a water outlet pipe 32 which are arranged in parallel, the planes of the water inlet pipe 31 and the water outlet pipe 32 are parallel to a horizontal plane, the water inlet pipe 31 and the water outlet pipe 32 are communicated through a water diversion pipe 33, the length direction of the water diversion pipe 33 is perpendicular to the length direction of the water inlet pipe 31 and the water outlet pipe 32, a plurality of water diversion pipes 33 are arranged at intervals in parallel, and heat exchange fins 34 are arranged on the pipe wall of the water diversion pipe 33. Because the cooling unit is immersed in the lubricating oil, and the lubricating oil which is cooler at the periphery of the cooling unit cannot float upwards, the application range of the cooling unit is enlarged, the cooling range in the horizontal direction is expanded by using the water inlet pipe 31, the water outlet pipe 32 and the water diversion pipe 33, and the cooling range in the vertical direction is expanded by the heat exchange fins 34.
Preferably, the water inlet pipe 31 is provided with an electromagnetic proportional ball valve 35 controlled by a control unit 40. The temperature sensor collects oil temperature signals, power proportion amplification is carried out through a 4-20 mA current command signal by the control unit 40, current is output to the electromagnet of the electromagnetic proportion ball valve 35 according to proportion, the output force of the electromagnet moves the position of the valve core according to proportion, and the flow of cooling water can be controlled according to corresponding proportion, so that constant temperature control of the lubricating oil in the crankcase at 65-68 ℃ is realized.
Preferably, the top of the crankcase 10 of the air compressor is communicated with a breathing tube 80, the breathing tube 80 comprises a vertical tube section 81 and a folded tube section 82, and the included angle between the vertical tube section 81 and the folded tube section 82 is smaller than 90 degrees. The moisture thus separated at the crankshaft 11 directly enters the breathing tube 80, and because the tube segment 82 is disposed obliquely downward, even if the moisture condenses in the tube segment 82, it flows out along the tube segment 82 instead of flowing back into the air compressor crankcase 10.
Preferably, one end of the folded tube section 82 is communicated with a primary air inlet cavity 90 of the air compressor. In this way, a complete closed loop is formed for the air compressor system, and the water discharged from the crankcase 10 of the air compressor still enters the air compressor system, thereby preventing the direct discharge of condensed water.
In the first embodiment, a heat-insulating tube is sleeved on the tube wall of the breathing tube 80. The breathing tube 80 is insulated to prevent direct condensation back flow after water vapor enters.
In the second embodiment, a heater is sleeved on the pipe wall of the breathing pipe 80. Because the breathing tube 80 is positioned outside the crankcase 10 of the air compressor, the breathing tube 80 can be directly heated to prevent condensation water from condensing and simultaneously accelerate water vapor separation.
A control method of a lubricating oil temperature control system of a marine high-pressure air compressor comprises the following steps:
s1, preparing to start the air compressor, detecting the temperature of lower lubricating oil in a crankcase 10 of the air compressor through a lower sensor 60, if the temperature is lower than 65 ℃, entering a step S2, otherwise, entering a step S3;
s2, starting a heating unit 20 to heat lubricating oil at the bottom of the crankcase 10 of the air compressor to 65 ℃;
s3, starting the air compressor, and pumping lubricating oil at the bottom of a crankcase 10 of the air compressor to a crankshaft 11 by an oil pump 73;
s4, heating the lubricating oil to 80 ℃ under the friction action of the crankshaft 11 and the bearing bush;
s5, lubricating oil at the crankshaft 11 falls into the bottom of the crankcase 10 of the air compressor under the action of gravity, the cooling unit 30 is started when the temperature of the lubricating oil above the cooling unit 30 exceeds 68 ℃, the cooling unit 30 is closed when the temperature of the lubricating oil above the cooling unit 30 is lower than 65 ℃, the heating unit 20 is closed when the temperature of the lubricating oil below the cooling unit 30 exceeds 68 ℃, the heating unit 20 is started when the temperature of the lubricating oil below the cooling unit 30 is lower than 65 ℃, and the control unit (40) controls the cooling water flow of the cooling unit (30) to maintain the temperature of the lubricating oil in the crankcase between 65 and 68 ℃.
The method firstly performs preheating to prevent condensed water from being generated before the air compressor is started, and in addition, part of lubricating oil can be further heated at the crankshaft 11 to remove water in the lubricating oil, and the water in the lubricating oil is reduced to the greatest extent through the preheating and reheating modes. The high temperature of the lubricating oil falling back from the crankshaft 11 increases the temperature of the upper lubricating oil, and at this time, the cooling unit 30 is started to further lower the temperature of the upper lubricating oil, while the temperature of the lower lubricating oil may be lower, and the heating unit 20 is selectively turned on and off according to the actual temperature of the lower lubricating oil.
Although the present disclosure is disclosed above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (7)
1. The control method of the lubricating oil temperature control system of the marine high-pressure air compressor comprises an air compressor crankcase (10), wherein a temperature control device is arranged in the air compressor crankcase (10), the temperature control device maintains the temperature of the lubricating oil in the air compressor crankcase (10) at 65-68 ℃, and the temperature control device comprises a heating unit (20) and a cooling unit (30); the temperature control device comprises a temperature sensor and a control unit (40), wherein the temperature sensor is in signal connection with the control unit (40), the control unit (40) controls the heating unit (20) and the cooling unit (30) to work, and the temperature sensor comprises an upper layer sensor (50) arranged above the cooling unit (30) and a lower layer sensor (60) arranged below the cooling unit (30); the heating unit (20) is arranged at the bottom of the air compressor crankcase (10), and the cooling unit (30) is arranged at the lower part of the air compressor crankcase (10) and is immersed in lubricating oil; the upper part of the air compressor crankcase (10) is provided with a crankshaft (11), the lower part of the air compressor crankcase (10) is communicated with an oil pipe (70), the oil pipe (70) is connected with an oil pump (73) and supplies oil to the crankshaft (11), the lower layer sensor (60) is arranged at the joint of the oil pipe (70) and the lower part of the air compressor crankcase (10), and the oil pipe (70) is sequentially provided with an oil filter (71), a one-way valve (72), the oil pump (73) and an oil pressure gauge (74) along the flowing direction of lubricating oil; the method is characterized by comprising the following steps:
s1, preparing to start the air compressor, detecting the temperature of lower lubricating oil in a crankcase (10) of the air compressor through a lower sensor (60), if the temperature is lower than 65 ℃, entering a step S2, otherwise, entering a step S3;
s2, starting a heating unit (20) to heat lubricating oil at the bottom of a crankcase (10) of the air compressor to 65 ℃;
s3, starting the air compressor, and enabling an oil pump (73) to press and send lubricating oil at the bottom of a crankcase (10) of the air compressor to a crankshaft (11);
s4, heating the lubricating oil to 80 ℃ under the friction action of the crankshaft (11) and the bearing bush;
s5, lubricating oil at the crankshaft (11) falls into the bottom of a crankcase (10) of the air compressor under the action of gravity, the cooling unit (30) is started when the temperature of the lubricating oil above the cooling unit (30) exceeds 68 ℃, the cooling unit (30) is closed when the temperature of the lubricating oil above the cooling unit (30) is lower than 65 ℃, the heating unit (20) is closed when the temperature of the lubricating oil below the cooling unit (30) exceeds 68 ℃, the heating unit (20) is started when the temperature of the lubricating oil below the cooling unit (30) is lower than 65 ℃, and the control unit (40) controls the cooling water flow of the cooling unit (30) to maintain the temperature of the lubricating oil in the crankcase at 65-68 ℃.
2. The control method for the lubricating oil temperature control system by utilizing the marine high-pressure air compressor according to claim 1, wherein the cooling unit (30) comprises a water inlet pipe (31) and a water outlet pipe (32) which are arranged in parallel, the planes of the water inlet pipe (31) and the water outlet pipe (32) are parallel to a horizontal plane, the water inlet pipe (31) and the water outlet pipe (32) are communicated through a water diversion pipe (33), the length direction of the water diversion pipe (33) is perpendicular to the length direction of the water inlet pipe (31) and the water outlet pipe (32), a plurality of water diversion pipes (33) are arranged at intervals in parallel, and heat exchange fins (34) are arranged on the pipe wall of the water diversion pipe (33).
3. The control method of the lubricating oil temperature control system for the marine high-pressure air compressor according to claim 2, wherein the water inlet pipe (31) is provided with an electromagnetic proportional ball valve (35) controlled by a control unit (40).
4. The control method of the lubricating oil temperature control system for the marine high-pressure air compressor according to claim 3, wherein the top of the crankcase (10) of the air compressor is communicated with a breathing tube (80), the breathing tube (80) comprises a vertical tube section (81) and a folded tube section (82), and an included angle between the vertical tube section (81) and the folded tube section (82) is smaller than 90 degrees.
5. The control method of the lubricating oil temperature control system for the marine high-pressure air compressor of claim 4, wherein one end of the pipe folding section (82) is communicated with a primary air inlet cavity (90) of the air compressor.
6. The control method of the lubricating oil temperature control system for the marine high-pressure air compressor of claim 5, wherein the pipe wall of the breathing pipe (80) is sleeved with a heat preservation pipe.
7. The control method of the lubricating oil temperature control system for the marine high-pressure air compressor of claim 5, wherein a heater is sleeved on the pipe wall of the breathing pipe (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328548.3A CN114934894B (en) | 2022-03-30 | 2022-03-30 | Marine high-pressure air compressor lubricating oil temperature control system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328548.3A CN114934894B (en) | 2022-03-30 | 2022-03-30 | Marine high-pressure air compressor lubricating oil temperature control system and control method thereof |
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| CN114934894A CN114934894A (en) | 2022-08-23 |
| CN114934894B true CN114934894B (en) | 2024-04-05 |
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| CN206929990U (en) * | 2017-07-04 | 2018-01-26 | 武汉市新荣锅炉制造有限公司 | A kind of Fin-tube Condenser |
| CN108679435A (en) * | 2018-04-28 | 2018-10-19 | 国网山东省电力公司电力科学研究院 | A kind of steam-turbine lubrication oil temperature on-line control device of accurate temperature controlling |
| CN209083503U (en) * | 2018-11-19 | 2019-07-09 | 自贡诺力斯百盛压缩机有限公司 | A kind of oiling compressor machine with temperature adjustment function |
| CN213455087U (en) * | 2020-11-13 | 2021-06-15 | 中国电建集团重庆工程有限公司 | Heat abstractor is used in bulky concrete construction |
| CN113586402A (en) * | 2021-08-20 | 2021-11-02 | 中石化石油机械股份有限公司三机分公司 | System and method for quickly heating lubricating oil of compressor warm-up |
| CN215614892U (en) * | 2021-07-30 | 2022-01-25 | 山东亿佰通管道系统有限公司 | Cooling device for sand casting |
| CN114215725A (en) * | 2021-12-14 | 2022-03-22 | 西安交通大学 | Two-stage compression diaphragm compressor system |
| CN114576539A (en) * | 2022-03-07 | 2022-06-03 | 南通市力威特液压设备有限公司 | Thin oil station integrated control system |
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2022
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| CN2639833Y (en) * | 2002-11-02 | 2004-09-08 | 陈绍希 | Steel aluminium integrated wing type heat radiator of regulation and controlling |
| CN201521418U (en) * | 2009-11-05 | 2010-07-07 | 李解放 | Lubricating oil temperature control device of heat pump compressor |
| CN206929990U (en) * | 2017-07-04 | 2018-01-26 | 武汉市新荣锅炉制造有限公司 | A kind of Fin-tube Condenser |
| CN108679435A (en) * | 2018-04-28 | 2018-10-19 | 国网山东省电力公司电力科学研究院 | A kind of steam-turbine lubrication oil temperature on-line control device of accurate temperature controlling |
| CN209083503U (en) * | 2018-11-19 | 2019-07-09 | 自贡诺力斯百盛压缩机有限公司 | A kind of oiling compressor machine with temperature adjustment function |
| CN213455087U (en) * | 2020-11-13 | 2021-06-15 | 中国电建集团重庆工程有限公司 | Heat abstractor is used in bulky concrete construction |
| CN215614892U (en) * | 2021-07-30 | 2022-01-25 | 山东亿佰通管道系统有限公司 | Cooling device for sand casting |
| CN113586402A (en) * | 2021-08-20 | 2021-11-02 | 中石化石油机械股份有限公司三机分公司 | System and method for quickly heating lubricating oil of compressor warm-up |
| CN114215725A (en) * | 2021-12-14 | 2022-03-22 | 西安交通大学 | Two-stage compression diaphragm compressor system |
| CN114576539A (en) * | 2022-03-07 | 2022-06-03 | 南通市力威特液压设备有限公司 | Thin oil station integrated control system |
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| CN114934894A (en) | 2022-08-23 |
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