CN112815222B - High-level oil tank oil filtering system based on frequency conversion technology and auxiliary oil tank and working method - Google Patents
High-level oil tank oil filtering system based on frequency conversion technology and auxiliary oil tank and working method Download PDFInfo
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- CN112815222B CN112815222B CN202110186988.5A CN202110186988A CN112815222B CN 112815222 B CN112815222 B CN 112815222B CN 202110186988 A CN202110186988 A CN 202110186988A CN 112815222 B CN112815222 B CN 112815222B
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- 238000001914 filtration Methods 0.000 title claims abstract description 90
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 51
- 238000005516 engineering process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005070 sampling Methods 0.000 claims abstract description 60
- 239000003921 oil Substances 0.000 claims description 464
- 230000001502 supplementing effect Effects 0.000 claims description 60
- 239000010687 lubricating oil Substances 0.000 claims description 58
- 239000010865 sewage Substances 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N19/00—Lubricant containers for use in lubricators or lubrication systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
- F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N2039/007—Using strainers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
The present invention discloses a high-level oil tank filtration system and working method based on frequency conversion technology and auxiliary oil tank. The system includes a high-level oil tank, an auxiliary oil tank, a frequency conversion oil filter, an overflow pipeline, a replenishment pipeline, an inlet pipeline, an auxiliary oil tank discharge pipeline, a coarse filter, a fine filter, a frequency conversion oil pump, a frequency converter, a sampling pipeline, and several matching flanges and shut-off valves. The present invention uses frequency conversion technology and auxiliary oil tank technology to increase the degree of freedom of adjustable flushing flow rate for the high-level oil tank filtration system. By connecting with the inlet pipeline, replenishment pipeline, and overflow pipeline of the high-level oil tank, it adopts high-speed oil filtration circulation without replenishment pipeline, high-speed oil filtration circulation without inlet pipeline, and high-speed oil filtration circulation including replenishment pipeline. The oil filtration circulation of pipelines and inlet pipelines increases the oil filtration flow rate and efficiency. This method is effective for the inlet pipelines The flushing and filtering of impurities in the oil replenishment pipeline and overflow pipeline are more thorough, which can effectively prevent impurities in the high-level oil tank pipeline from entering the bearing system of the turbomachinery.
Description
Technical Field
The invention relates to the technical field of oil filtering of impeller machinery lubricating oil systems, in particular to a high-level oil tank oil filtering system based on a frequency conversion technology and an auxiliary oil tank and a working method.
Background
Among the accessory systems of an impeller machine, a lubrication oil system is one of the most important auxiliary systems, and the quality of lubrication oil is directly related to the operational safety and service life of the impeller machine. The prior art can realize oil filtering of the lubricating oil system except for the high-level oil tank pipeline in the impeller machinery system, so that the oil quality of the lubricating oil system except for the high-level oil tank and the pipeline of the impeller machinery system can meet the use requirement, but the high-level oil tank and the pipeline of the high-level oil tank in the impeller machinery system cannot be filtered, and the risk of bearing damage or complete machine damage caused by substandard oil quality and impurities in the high-level oil tank flowing into the impeller machinery bearing when the impeller machinery system is in a power failure accident is increased.
Disclosure of Invention
The invention aims to solve the problems and provide a high-level oil tank oil filtering system based on a frequency conversion technology and an auxiliary oil tank and a working method thereof.
The invention realizes the above purpose through the following technical scheme:
The high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank comprises a high-level oil tank 1, the auxiliary oil tank 2, a frequency conversion oil filter 3, an oil overflow pipeline 4, an oil supplementing pipeline 5, an oil inlet pipeline 6, an auxiliary oil tank sewage discharging pipeline 7, a rough filtering filter 8, a fine filtering filter 9, a frequency conversion oil pump 10, a frequency converter 11, a sampling pipeline 12, a plurality of pairing flanges 13 and a plurality of shutoff valves 14, wherein an oil inlet port, an oil supplementing port and an oil overflow port which are arranged on the high-level oil tank 1 are respectively connected with one end of the oil inlet pipeline 6, one end of a main pipeline of the oil supplementing pipeline 5 and one end of the oil overflow pipeline 4, the other end of the oil overflow pipeline 4 is connected with an outlet pipeline of the frequency conversion oil pump 10 on the frequency conversion oil filter 3 through a pair of pairing flanges 13, the other end of the oil inlet pipeline 6 is connected with the oil inlet pipeline port of the auxiliary oil tank 2 through a pair of pairing flanges 13, the other end of the main path of the oil supplementing pipeline 5 is connected with an outlet pipeline of an oil supplementing pipe joint of the auxiliary oil tank 2 through a pair of matched flanges 13, one end of a sampling pipeline 12 is communicated with a three-way joint of the main path of the oil supplementing pipeline 5, an inlet pipeline of a rough filter 8 is connected with an overflow pipeline joint of the auxiliary oil tank 2 through a pair of matched flanges 13, an outlet of the rough filter 8 is directly connected with an inlet of a fine filter 9 through an internal pipeline of a variable frequency oil filter 3, an outlet of the fine filter 9 is directly connected with an inlet of the variable frequency oil pump 10 through an internal pipeline of the variable frequency oil filter 3, a shut-off valve 14 is respectively arranged in the middle of the pipeline between the rough filter 8 and the fine filter 9 and in the middle of the pipeline between the fine filter 9 and the variable frequency oil pump 10, a shut-off valve 14 is arranged in the middle of the sampling pipeline 12, and a shut-off valve is arranged in the middle of the pipeline inside the flange of the oil supplementing pipe joint of the auxiliary oil tank 2, the middle part of the pipeline inside the oil inlet pipe interface flange and the middle part of the pipeline inside the oil overflow pipe interface flange are respectively provided with a shutoff valve 14, the middle part of the pipeline inside the outlet flange of the variable frequency oil pump 10 of the variable frequency oil filter 3 and the middle part of the pipeline inside the inlet flange of the coarse filter 8 are respectively provided with a shutoff valve 14, the auxiliary oil groove sewage discharging pipeline 7 is provided with a shutoff valve 14, the coarse filter 8, the fine filter 9, the variable frequency oil pump 10 and the variable frequency device 11 are fixed on the base of the variable frequency oil filter 3, and the top of the auxiliary oil groove 2 is provided with an oil filling port and a knob type oil filling cover.
The frequency converter 11 of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank realizes the control of the lubricating oil supply lift by controlling the rotating speed of the frequency conversion oil pump 10, and the oil supply lift of the frequency conversion oil pump 10 regulated by the frequency converter 11 in the operation process is larger than the sum of the lengths of each section of vertical trend pipeline of the oil overflow pipeline 4.
The overflow pipeline 4, the oil supplementing pipeline 5 and the oil inlet pipeline 6 of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank are provided with a vertical trend pipeline and a horizontal trend pipeline.
The sampling pipeline 12 of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank is a horizontal pipeline, and the distance between the joint position of the sampling pipeline 12 and the oil supplementing pipeline 5 and the flange of the oil supplementing pipeline 5 is less than or equal to 1 meter.
The rated volume of the auxiliary oil tank 2 of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank is more than or equal to 2 times of the rated volume of the high-level oil tank 1 and the sum of the volumes of the oil overflow pipeline 4, the oil supplementing pipeline 5 and the oil inlet pipeline 6.
The working method of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank is divided into four stages, namely an oil injection stage, an oil filtering stage, a sampling stage and an oil return stage, wherein the oil injection stage is to close all shut-off valves 14, open a knob type oil filling cover at the top of the auxiliary oil tank 2, inject lubricating oil into the auxiliary oil tank 2, the oil quantity of the injected lubricating oil is 1.3 to 1.5 times of the volume of the lubricating oil required by the high-level oil tank oil filtering and a pipeline thereof, cover the knob type oil filling cover, open all shut-off valves except the shut-off valves 14 positioned in the middle part of the sampling pipeline 12 and the shut-off valves 14 positioned on the auxiliary oil tank blow-down pipeline 7, open the frequency converter 11 to start the variable frequency oil pump 10 and adjust the oil supply lift to drive the lubricating oil into the high-level oil tank 1 through the oil overflow pipeline 4, the liquid level of the high-level oil tank 1 is 70% of the rated volume, the oiling stage is completed, the variable-frequency oil pump 10 is closed, and all the shutoff valves 14 are closed at the same time; The oil filtering stage is divided into three steps, wherein the first step is to open all shut-off valves except a shut-off valve 14 positioned in the middle of a sampling pipeline 12, a shut-off valve 14 positioned on an auxiliary oil groove blow-down pipeline 7 and a shut-off valve 14 positioned in the middle of a pipeline on the inner side of an oil supplementing port flange of an auxiliary oil groove 2, start a variable frequency oil pump 10, enable lubricating oil to sequentially pass through an oil inlet pipeline 6, the auxiliary oil groove 2, a rough filter 8, a fine filter 9 and the variable frequency oil pump 10 from a high-level oil tank 1, return to the high-level oil tank 1 again, realize high-speed oil filtering circulation of an oil supplementing pipeline 5, and simultaneously close the variable frequency oil pump 10 and all shut-off valves 14 when lubricating oil finishes high-speed oil filtering circulation of the oil supplementing pipeline 5 for a plurality of times, The second step of the oil filtering stage is entered, at this time, all the shut-off valves except the shut-off valve 14 positioned in the middle of the sampling pipeline 12, the shut-off valve 14 positioned on the drain pipeline 7 of the auxiliary oil tank and the shut-off valve 14 positioned in the middle of the pipeline inside the flange of the oil inlet of the auxiliary oil tank 2 are opened, the variable frequency oil pump 10 is started, lubricating oil sequentially passes through the oil supplementing pipeline 5, the auxiliary oil tank 2, the rough filter 8, the fine filter 9 and the variable frequency oil pump 10 from the high-level oil tank 1, the high-speed oil filtering circulation without the oil inlet pipeline 6 is realized, after the high-speed oil filtering circulation without the oil inlet pipeline 6 is completed for a plurality of times by the lubricating oil, the third step of the oil filtering stage is entered, Opening a shutoff valve 14 positioned in the middle of a pipeline at the inner side of an oil inlet flange of the auxiliary oil tank 2, converging lubricating oil after passing through an oil supplementing pipeline 5 and an oil inlet pipeline 6 respectively from a high-level oil tank 1, sequentially passing through the auxiliary oil tank 2, a rough filtering filter 8, a fine filtering filter 9 and a variable-frequency oil pump 10, returning to the high-level oil tank 1 again, completing oil filtering circulation comprising the oil supplementing pipeline 5 and the oil inlet pipeline 6 for a plurality of times, completing an oil filtering stage, closing a frequency converter 11 and the variable-frequency oil pump 10, and simultaneously closing all shutoff valves 14; The sampling stage is to slowly open a shutoff valve 14 positioned in the middle of a sampling pipeline 12, discharge 5 to 10 liters of lubricating oil from an outlet of the sampling pipeline 12 to rinse the sampling pipeline 12, then pick up a small amount of lubricating oil from the lubricating oil in a flowing state to rinse a sampling bottle subjected to cleaning treatment, pour out the lubricating oil in the sampling bottle, pick up 1.5 times of the volume of the lubricating oil required for inspection from the lubricating oil in the flowing state by using the rinsed sampling bottle, cover the bottle cap of the sampling bottle, close the shutoff valve 14 on the sampling pipeline 12, and finish sampling; the oil return stage is to open a shutoff valve 14 in the middle of the inner side pipeline of the oil supplementing pipe joint flange and a shutoff valve 14 in the middle of the inner side pipeline of the oil inlet pipe joint flange of the auxiliary oil tank 2 respectively, so that lubricating oil in the high-level oil tank 1, the oil supplementing pipeline 5 and the oil inlet pipeline 6 can flow back to the auxiliary oil tank 2.
The invention has the beneficial effects that:
At present, no oil filtering scheme for a high-level oil tank and a pipeline of the high-level oil tank can be used in an impeller mechanical system. The invention provides a high-level oil tank oil filtering system with low cost and high operability based on a frequency conversion technology and an auxiliary oil tank and a working method thereof, the invention adds a degree of freedom for adjusting the flow rate of flushing welding slag and dust for the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank technology through being connected with an oil inlet pipeline, an oil supplementing pipeline and an oil overflowing pipeline of the high-level oil tank, the method has the advantages that the high-speed oil filtering circulation without an oil supplementing pipeline, the high-speed oil filtering circulation without an oil inlet pipeline and the oil filtering circulation comprising the oil supplementing pipeline and the oil inlet pipeline are adopted, the flow speed of the oil supplementing pipeline and the oil inlet pipeline is increased, the flow direction in the oil supplementing pipeline is consistent with the flow direction of the oil supplementing process of the high-level oil tank under the accident condition, and the method is more thorough in flushing and filtering the welding slag and dust of the oil inlet pipeline, the oil supplementing pipeline and the oil overflow pipeline, and can effectively prevent the welding slag and dust in the high-level oil tank pipeline from entering the bearing system of the impeller machine. The invention reserves a representative sampling port, the experimental result obtained by sampling at the position for laboratory analysis is more reliable, and after the sampling is qualified, the lubricating oil in the high-level oil tank, the oil supplementing pipeline and the oil inlet pipeline can flow back to the auxiliary oil tank completely, so that the lubricating oil can be reused, and the waste of the lubricating oil in the whole oil filtering link is reduced to the greatest extent.
Drawings
FIG. 1 is a schematic diagram of a high-level tank oil filtering system based on a frequency conversion technology and an auxiliary oil tank.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
As shown in fig. 1, a high-level tank oil filtering system based on a frequency conversion technology and an auxiliary oil tank comprises a high-level tank 1, the auxiliary oil tank 2, a frequency conversion oil filter 3, an oil spilling pipeline 4, an oil supplementing pipeline 5, an oil inlet pipeline 6, an auxiliary oil tank sewage discharging pipeline 7, a coarse filter 8, a fine filter 9, a frequency conversion oil pump 10, a frequency converter 11, a sampling pipeline 12, a plurality of pairing flanges 13 and a plurality of shutoff valves 14, wherein an oil inlet port, an oil supplementing port and an oil spilling port interface which are arranged on the high-level tank 1 are respectively connected with one end of the oil inlet pipeline 6, one end of a main pipeline 5 and one end of the oil spilling pipeline 4, the other end of the oil spilling pipeline 4 is connected with an outlet pipeline of the frequency conversion oil pump 10 on the frequency conversion oil filter 3 through a pair of pairing flanges 13, the other end of the oil inlet pipeline 6 is connected with the oil inlet pipeline of the auxiliary oil tank 2 through a pair of pairing flanges 13, one end of the sampling pipeline 12 is communicated with a three-way interface of the main filter 5, one end of the sampling pipeline 8 is connected with the coarse filter 8 through a pair of pairing flanges 13, the filter 8 is directly connected with the coarse filter 9 of the inner side of the oil filtering pipeline 2 through the frequency conversion oil filtering pipeline 9 and the middle part of the coarse filter 9 which is arranged between the middle part of the frequency conversion filter 9 and the coarse filter is directly connected with the middle part of the coarse filter 2 through the middle part of the frequency conversion filter 9, and the filter 10 is arranged between the middle part of the filter 9 and the coarse filter 9 through the frequency conversion filter 9 and the middle part of the frequency conversion filter 2, and the filter is directly connected with the middle filter 9, and the filter between the filter 2 and the filter is directly between the filter and the filter 2 and the filter is arranged between the middle, the middle part of the pipeline inside the oil inlet pipe interface flange and the middle part of the pipeline inside the oil overflow pipe interface flange are respectively provided with a shutoff valve 14, the middle part of the pipeline inside the outlet flange of the variable frequency oil pump 10 of the variable frequency oil filter 3 and the middle part of the pipeline inside the inlet flange of the coarse filter 8 are respectively provided with a shutoff valve 14, the sewage pipeline 7 of the auxiliary oil groove is provided with a shutoff valve 14, and the top of the auxiliary oil groove 2 is provided with an oil filling port and a knob type oil filling cover.
As a preferred embodiment of the present invention, the frequency converter 11 of the high-level tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank controls the oil supply lift of the lubricating oil by controlling the rotation speed of the frequency conversion oil pump 10, and the oil supply lift of the frequency conversion oil pump 10 regulated by the frequency converter 11 in the operation process is greater than the sum of the lengths of each section of vertical trend pipeline of the oil overflow pipeline 4.
As a preferred embodiment of the invention, the overflow pipeline 4, the oil supplementing pipeline 5 and the oil inlet pipeline 6 of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank are provided with a vertical trend pipeline and a horizontal trend pipeline.
As a preferred embodiment of the present invention, the sampling pipeline 12 of the high-level tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank is a horizontal pipeline, and the distance between the interface position of the sampling pipeline 12 and the oil supplementing pipeline 5 and the flange of the oil supplementing pipeline 5 is less than or equal to 1 meter.
As a preferred embodiment of the present invention, the rated volume of the auxiliary oil tank 2 of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank is more than or equal to 2 times of the rated volume of the high-level oil tank 1 and the sum of the volumes of the overflow pipeline 4, the oil supplementing pipeline 5 and the oil inlet pipeline 6.
As a preferred embodiment of the present invention, the coarse filter 8, the fine filter 9, the variable frequency oil pump 10 and the frequency converter 11 of the high-level tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank are fixed on the base of the variable frequency oil filter 3.
The working method of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank comprises four stages, namely an oil filling stage, an oil filtering stage, a sampling stage and an oil returning stage, wherein the oil filling stage is to close all shut-off valves 14, open a knob type oil filling cover at the top of the auxiliary oil tank 2, inject lubricating oil into the auxiliary oil tank 2, the oil quantity of the injected lubricating oil is 1.3 to 1.5 times of the volume of the lubricating oil required by the high-level oil tank oil filtering and a pipeline thereof, cover the knob type oil filling cover, open all shut-off valves except the shut-off valves 14 positioned in the middle part of the sampling pipeline 12 and the shut-off valves 14 positioned on the auxiliary oil tank blowdown pipeline 7, open the frequency converter 11 to start the frequency conversion oil pump 10 and adjust the oil supply lift to drive the lubricating oil into the high-level oil tank 1 through the oil overflow pipeline 4, the liquid level of the high-level oil tank 1 is 70% of the rated volume, the oiling stage is completed, the variable-frequency oil pump 10 is closed, and all the shutoff valves 14 are closed at the same time; The oil filtering stage is divided into three steps, wherein the first step is to open all shut-off valves except a shut-off valve 14 positioned in the middle of a sampling pipeline 12, a shut-off valve 14 positioned on an auxiliary oil groove blow-down pipeline 7 and a shut-off valve 14 positioned in the middle of a pipeline on the inner side of an oil supplementing port flange of an auxiliary oil groove 2, start a variable frequency oil pump 10, enable lubricating oil to sequentially pass through an oil inlet pipeline 6, the auxiliary oil groove 2, a rough filter 8, a fine filter 9 and the variable frequency oil pump 10 from a high-level oil tank 1, return to the high-level oil tank 1 again, realize high-speed oil filtering circulation of an oil supplementing pipeline 5, and simultaneously close the variable frequency oil pump 10 and all shut-off valves 14 when the lubricating oil completes 300 high-speed oil filtering circulation of the oil supplementing pipeline 5, The second step of the oil filtering stage is entered, at this time, all the shut-off valves except the shut-off valve 14 positioned in the middle of the sampling pipeline 12, the shut-off valve 14 positioned on the drain pipeline 7 of the auxiliary oil tank and the shut-off valve 14 positioned in the middle of the pipeline inside the flange of the oil inlet of the auxiliary oil tank 2 are opened, the variable frequency oil pump 10 is started, lubricating oil sequentially passes through the oil supplementing pipeline 5, the auxiliary oil tank 2, the rough filter 8, the fine filter 9 and the variable frequency oil pump 10 from the high-level oil tank 1, the high-speed oil filtering circulation without the oil inlet pipeline 6 is realized, after 300 times of high-speed oil filtering circulation without the oil inlet pipeline 6 is completed by the lubricating oil, the third step of the oil filtering stage is entered, Opening a shutoff valve 14 positioned in the middle of an oil inlet pipe interface flange inner side pipeline of the auxiliary oil tank 2, converging lubricating oil after passing through an oil supplementing pipeline 5 and an oil inlet pipeline 6 respectively in two paths from the high-level oil tank 1, sequentially passing through the auxiliary oil tank 2, a rough filter 8, a fine filter 9 and a variable-frequency oil pump 10, returning to the high-level oil tank 1 again, completing 300 times of oil filtering circulation comprising the oil supplementing pipeline 5 and the oil inlet pipeline 6, completing an oil filtering stage, closing the frequency converter 11 and the variable-frequency oil pump 10, and simultaneously closing all shutoff valves 14; The sampling stage is to slowly open a shutoff valve 14 positioned in the middle of a sampling pipeline 12, discharge 5 to 10 liters of lubricating oil from an outlet of the sampling pipeline 12 to rinse the sampling pipeline 12, then collect a small amount of lubricating oil from the lubricating oil in a flowing state to rinse a sampling bottle subjected to cleaning treatment, pour the lubricating oil in the sampling bottle, then collect 1.5 times of the volume of the lubricating oil required by inspection from the lubricating oil in the flowing state by using the rinsed sampling bottle, cover the bottle cap of the sampling bottle, close a valve on the sampling pipeline 12 and finish sampling; the oil return stage is to open a shutoff valve 14 in the middle of the inner side pipeline of the oil supplementing pipe joint flange and a shutoff valve 14 in the middle of the inner side pipeline of the oil inlet pipe joint flange of the auxiliary oil tank 2 respectively, so that lubricating oil in the high-level oil tank 1, the oil supplementing pipeline 5 and the oil inlet pipeline 6 can flow back to the auxiliary oil tank 2.
Claims (7)
1. High-order oil tank oil filtering system based on frequency conversion technology and auxiliary oil groove, its characterized in that: comprises a high-level oil tank (1), an auxiliary oil tank (2), a variable-frequency oil filter (3), an oil overflow pipeline (4), an oil supplementing pipeline (5), an oil inlet pipeline (6), an auxiliary oil tank sewage discharge pipeline (7), a rough filtration filter (8), a fine filtration filter (9), a variable-frequency oil pump (10), a frequency converter (11), a sampling pipeline (12), a plurality of pairing flanges (13) and a plurality of shutoff valves (14), wherein an oil inlet port, an oil supplementing port and an oil overflowing port which are arranged in the high-level oil tank (1) are respectively connected with one end of the oil inlet pipeline (6), one end of a main trunk pipeline of the oil supplementing pipeline (5) and one end of the oil overflowing pipeline (4), the other end of the oil overflowing pipeline (4) is connected with an outlet pipeline of the variable-frequency oil pump (10) on the variable-frequency oil filter (3) through a pair of pairing flanges (13), the other end of the oil inlet pipeline (6) is connected with the oil inlet pipeline of the auxiliary oil tank (2) through a pair of pairing flanges (13), the other end of the oil supplementing pipeline (5) is connected with an oil supplementing pipeline outlet pipeline of the auxiliary oil tank (2) through a pair of pairing flanges (13), the oil supplementing pipeline outlet of the main pipeline (5) is connected with the main pipeline (8 through a pair of pairing flanges (12), the outlet of the coarse filter (8) is directly connected with the inlet of the fine filter (9) through an internal pipeline of the variable-frequency oil filter (3), the outlet of the fine filter (9) is directly connected with the inlet of the variable-frequency oil pump (10) through an internal pipeline of the variable-frequency oil filter (3), a shut-off valve (14) is respectively arranged in the middle of the pipeline between the coarse filter (8) and the fine filter (9) and the middle of the pipeline between the fine filter (9) and the variable-frequency oil pump (10), a shut-off valve (14) is respectively arranged in the middle of the sampling pipeline (12), a shut-off valve (14) is respectively arranged in the middle of the pipeline inside the oil supplementing pipe flange of the auxiliary oil tank (2), the middle of the pipeline inside the oil inlet pipe flange and the pipeline inside the oil spilling pipe interface flange, a shut-off valve (14) is respectively arranged in the middle of the pipeline inside the variable-frequency oil pump (10) outlet flange of the variable-frequency oil filter (3), a shut-off valve (14) is respectively arranged in the middle of the pipeline inside the inlet flange of the coarse filter (8), a shut-off valve (14) is respectively arranged on the auxiliary oil tank pipeline (7), and the top of the auxiliary oil tank (2) is provided with an oil filling port and a twist-type screw cap.
2. The high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank as claimed in claim 1, wherein: the frequency converter (11) controls the lubricating oil supply lift by controlling the rotating speed of the frequency conversion oil pump (10), and the oil supply lift of the frequency conversion oil pump (10) regulated by the frequency converter (11) in the running process is larger than the sum of the lengths of each section of vertical trend pipeline of the oil overflow pipeline (4).
3. The high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank as claimed in claim 1, wherein: the oil overflow pipeline (4), the oil supplementing pipeline (5) and the oil inlet pipeline (6) are provided with a vertical trend pipeline and a horizontal trend pipeline.
4. The high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank as claimed in claim 1, wherein: the sampling pipeline (12) is a horizontal pipeline, and the distance between the joint position of the sampling pipeline (12) and the oil supplementing pipeline (5) and the flange of the oil supplementing pipeline (5) is less than or equal to 1 meter.
5. The high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank as claimed in claim 1, wherein: the rated volume of the auxiliary oil groove (2) is more than or equal to 2 times of the sum of the rated volume of the high-level oil tank (1), the volume of the oil overflow pipeline (4), the volume of the oil supplementing pipeline (5) and the volume of the oil inlet pipeline (6).
6. The high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank as claimed in claim 1, wherein: the coarse filter (8), the fine filter (9), the variable-frequency oil pump (10) and the frequency converter (11) are fixed on the base of the variable-frequency oil filter (3).
7. The working method of the high-level oil tank oil filtering system based on the frequency conversion technology and the auxiliary oil tank as claimed in any one of claims 1 to 6, which is characterized in that: the method comprises four stages, namely an oiling stage, an oil filtering stage, a sampling stage and an oil return stage, wherein the oiling stage is to close all shut-off valves (14), open a turn-button type oiling cover at the top of an auxiliary oil groove (2), inject lubricating oil into the auxiliary oil groove (2), and fill the lubricating oil amount which is 1.3 to 1.5 times of the lubricating oil volume required by high-level oil tank oil filtering and a pipeline thereof, cover the turn-button type oiling cover, open all shut-off valves except the shut-off valves (14) positioned in the middle of a sampling pipeline (12) and the shut-off valves (14) positioned on an auxiliary oil groove blowdown pipeline (7), Starting a variable frequency oil pump (10) by opening a frequency converter (11), adjusting an oil supply lift, pumping lubricating oil into a high-level oil tank (1) through an oil overflow pipeline (4), enabling the liquid level of the high-level oil tank (1) to be 70% of the rated volume, completing an oil injection stage, closing the variable frequency oil pump (10), and simultaneously closing all shut-off valves (14); The oil filtering stage is divided into three steps, the first step is to open all shut-off valves except the shut-off valve (14) positioned in the middle of a sampling pipeline (12), the shut-off valve (14) positioned on an auxiliary oil groove sewage pipeline (7) and the shut-off valve (14) positioned in the middle of the pipeline at the inner side of an oil supplementing pipe joint flange of an auxiliary oil groove (2), start a variable frequency oil pump (10), lubricating oil sequentially passes through an oil inlet pipeline (6), the auxiliary oil groove (2), a rough filtering filter (8), a fine filtering filter (9) and the variable frequency oil pump (10) from a high-level oil tank (1) and returns to the high-level oil tank (1) again to realize high-speed oil filtering circulation of an oil supplementing pipeline (5), When lubricating oil completes high-speed oil filtering circulation of the oil supplementing pipeline (5) for many times, the variable-frequency oil pump (10) and all shut-off valves (14) are closed simultaneously, and the lubricating oil enters a second step of an oil filtering stage, all shut-off valves except the shut-off valve (14) positioned in the middle of the sampling pipeline (12), the shut-off valve (14) positioned on the auxiliary oil groove blow-down pipeline (7) and the shut-off valve (14) positioned in the middle of the pipeline at the inner side of an oil inlet pipe interface flange of the auxiliary oil groove (2) are opened at the moment, the variable-frequency oil pump (10) is started, and the lubricating oil sequentially passes through the oil supplementing pipeline (5), the auxiliary oil groove (2), the rough filtering filter (8), the fine filtering filter (9), The variable frequency oil pump (10) returns to the high-level oil tank (1) again to realize high-speed oil filtering circulation without an oil inlet pipeline (6), after lubricating oil finishes high-speed oil filtering circulation without the oil inlet pipeline (6) for many times, enters a third step of an oil filtering stage, opens a shutoff valve (14) positioned at the middle part of the inner side pipeline of an oil inlet pipeline interface flange of the auxiliary oil tank (2), divides the lubricating oil from the high-level oil tank (1) into two paths, respectively passes through the oil supplementing pipeline (5) and the oil inlet pipeline (6) and then merges, sequentially passes through the auxiliary oil tank (2), the rough filtering filter (8), the fine filtering filter (9) and the variable frequency oil pump (10), returns to the high-level oil tank (1) again to finish oil filtering circulation comprising the oil supplementing pipeline (5) and the oil inlet pipeline (6) for many times, the oil filtering stage is completed, the frequency converter (11) and the variable frequency oil pump (10) are closed, and all shut-off valves (14) are closed at the same time; the sampling stage is to slowly open a shutoff valve (14) positioned in the middle of a sampling pipeline (12), discharge 5 to 10 liters of lubricating oil from an outlet of the sampling pipeline (12) to lubricate the sampling pipeline (12), then to collect a small amount of lubricating oil from the lubricating oil in a flowing state to lubricate a clean sampling bottle, to pour out the lubricating oil in the sampling bottle, then to collect 1.5 times of the lubricating oil volume required by inspection from the lubricating oil in the flowing state by the moistened sampling bottle, to cover the bottle cap of the sampling bottle, and to close the shutoff valve (14) on the sampling pipeline (12) to finish sampling; the oil return stage is to open a shutoff valve (14) in the middle of the inner side pipeline of the oil supplementing pipe joint flange and a shutoff valve (14) in the middle of the inner side pipeline of the oil inlet pipe joint flange of the auxiliary oil tank (2) respectively, so that lubricating oil in the high-level oil tank (1), the oil supplementing pipeline (5) and the oil inlet pipeline (6) all flow back to the auxiliary oil tank (2).
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| JP2014047886A (en) * | 2012-09-03 | 2014-03-17 | Toshiba Corp | Lubrication oil cleaning device, and lubrication oil cleaning method |
| CN107605552B (en) * | 2017-08-03 | 2020-05-19 | 山东电力建设第一工程公司 | Lubricating and flushing system for lubricating oil pipeline of steam turbine generator unit |
| CN109488869B (en) * | 2018-11-30 | 2021-05-28 | 涿州市诚达设备制造有限公司 | Oil mist oil supplementing device |
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| CN102818104A (en) * | 2012-08-23 | 2012-12-12 | 南京西普水泥工程集团有限公司 | Grinding roller lubricating system of four-roller vertical mill |
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