CN114542938A - Turbine lubricating oil return oil filtering system and using method - Google Patents
Turbine lubricating oil return oil filtering system and using method Download PDFInfo
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- CN114542938A CN114542938A CN202210294670.3A CN202210294670A CN114542938A CN 114542938 A CN114542938 A CN 114542938A CN 202210294670 A CN202210294670 A CN 202210294670A CN 114542938 A CN114542938 A CN 114542938A
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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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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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
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or 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
- F16N39/002—Arrangements for conditioning of lubricants in the lubricating system by deaeration
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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
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
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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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- 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
- F16N2260/00—Fail safe
- F16N2260/02—Indicating
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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
- F16N2260/00—Fail safe
- F16N2260/30—Clogging filter
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtration Of Liquid (AREA)
Abstract
A turbine lube oil return filtration system comprising: the oil tank comprises an oil return area, a middle area and an oil suction area; the oil return area is separated from the middle area by a first partition plate assembly; the first partition plate assembly is provided with a first vertical filter screen plate for carrying out first filtration on the lubricating oil of the steam turbine; the middle area and the oil absorption area are separated by a second clapboard component; the second vertical filter screen plate is arranged on the second partition plate assembly to carry out secondary filtration on the lubricating oil of the steam turbine; and the top of the oil tank is also provided with a liquid level difference meter for monitoring the liquid levels of the three regions. The turbine lubricating oil return oil filtering system disclosed by the invention not only can be used for filtering turbine lubricating oil twice, but also can be used for realizing online replacement of the filter screen, improving the working efficiency, monitoring whether the filter screen is blocked in real time and sending an alarm signal to a remote monitoring end.
Description
Technical Field
The invention belongs to the technical field of turbine lubricating oil, and particularly relates to a turbine lubricating oil return oil filtering system and a using method thereof.
Background
The normal operation of the turbine lubricating oil system is one of the decisive factors of the safe and stable operation of the unit. In the operation process, if a lubricating oil system has problems, the problems of bearing burning, overlarge vibration and the like of a steam turbine can be caused, and production accidents such as trip and the like can be caused in serious cases, so the problem of the oil quality of the lubricating oil is very important. Except that the oil purification device circularly treats the lubricating oil such as water removal, impurity removal, acid removal, emulsification and the like, a common lubricating oil system requires that a filter device is respectively arranged at an oil return pipeline and an oil outlet pipeline of a lubricating oil hydraulic station to filter the lubricating oil which flows back to the hydraulic station and flows into a steam turbine system again. A double-cylinder filter is generally adopted at a lubricating oil outlet of the hydraulic station, and a filter element can be replaced on line by switching a handle between the two filters.
The return oil filtering device is generally designed by manufacturers of the lubricating oil station, and the performance of the return oil filtering device of each manufacturer is greatly different due to different structures and different filtering methods.
The existing oil return and oil filtering device is generally simple, easy and rough. For example, some manufacturers weld the filter screen plate directly on the internal partition plate of the oil tank, and the filter screen plate and the whole partition plate form a filter device together; the oil return pipeline is blocked to cause a series of problems such as oil level reduction often to this kind of structural design to the filter equipment of this kind of form can't in time change on line, can only wait to change when the unit stops, influences the normal operating of steam turbine.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a turbine lubricating oil return oil filtering system and a turbine lubricating oil return oil filtering method.
The invention adopts the following technical scheme:
a turbine lube oil return filtration system comprising: the oil tank comprises an oil return area, a middle area and an oil suction area; the oil return area is separated from the middle area by a first partition plate assembly; the first partition plate assembly is provided with a first vertical filter screen plate, the first vertical filter screen plate can filter lubricating oil of the steam turbine for the first time, and the first vertical filter screen plate can be replaced; the middle area and the oil absorption area are separated by a second clapboard component; the second vertical filter screen plate is arranged on the second partition plate assembly, the second vertical filter screen plate can be used for carrying out secondary filtration on the lubricating oil of the steam turbine, and the second vertical filter screen plate can be replaced; the top of the oil tank is also provided with a first ultrasonic liquid level difference meter which is respectively connected with the oil return area and the middle area and is used for monitoring the liquid level difference between the oil return area and the middle area; the top of the oil tank is also provided with a second ultrasonic liquid level difference meter which is respectively connected with the middle area and the oil absorption area and is used for monitoring the liquid level difference between the middle area and the oil absorption area; the oil return area is provided with an oil return port, and the oil absorption area is provided with an oil suction port.
As a preferred embodiment of the present invention, the first partition plate assembly includes a first partition plate and a first partition plate double-rail chute.
As a preferred embodiment of the present invention, a first vertical filter screen plate is disposed on the first partition plate double-track chute.
As a preferred embodiment mode of the present invention, the second partition plate assembly includes a second partition plate, a second partition plate double-rail chute, and a hook.
As a preferred embodiment of the present invention, a second vertical filter screen plate is disposed on the second partition plate double-rail chute.
As a preferred embodiment of the present invention, the hook is disposed above the second partition double-track chute for hanging the second vertical filter screen plate.
As a preferred embodiment mode of the present invention, the oil return opening is disposed on the left side of the top of the oil return area and extends to the bottom of the oil return area.
As a preferred embodiment mode of the present invention, the first vertical filtering net is disposed at a right upper corner of the first baffle plate assembly.
In a preferred embodiment of the present invention, the second vertical filtering net is disposed at a lower left corner of the second baffle plate assembly.
As a preferred embodiment mode of the present invention, the oil suction opening is disposed at the top right side of the oil suction area and extends to the lower side portion of the oil suction area; the oil tank is used for increasing the length of a circulation path of turbine lubricating oil, and further increasing the residence time of the turbine lubricating oil in the oil tank.
As a preferred embodiment mode of the present invention, the oil return opening is disposed on the right side of the top of the oil return area and extends to the bottom of the oil return area.
As a preferred embodiment mode of the present invention, the first vertical filtering net is disposed at an upper left corner of the first baffle plate assembly.
In a preferred embodiment of the present invention, the second vertical filtering net is disposed at a right lower corner of the second baffle plate assembly.
As a preferred embodiment mode of the present invention, the oil suction opening is disposed at the left side of the top of the oil suction area and extends to the lower side of the oil suction area; the oil tank is used for increasing the length of a circulation path of turbine lubricating oil, and further increasing the residence time of the turbine lubricating oil in the oil tank.
In a preferred embodiment of the present invention, the first vertical filter screen plate is used for coarse filtration of the lubricating oil, and the filtration precision is 200 μm.
In a preferred embodiment of the present invention, the second vertical filter screen plate is used for fine filtering of the lubricating oil, and the filtering precision is 160 μm.
As a preferred embodiment of the present invention, a first flange cover is disposed on the upper cover of the oil tank above the first vertical filter screen plate, and is used for replacing the first vertical filter screen plate.
As a preferred embodiment of the present invention, a second flange cover is disposed on the upper cover of the oil tank above the second vertical filter screen plate, and is used for replacing the second vertical filter screen plate.
As a preferred embodiment of the present invention, the first vertical filter screen plate includes a first filter screen, a first perforated plate, a first transverse pressing plate, a first longitudinal pressing plate, a first rivet, a first frame, and a first handle.
As a preferred embodiment of the present invention, a first orifice plate is disposed in the first frame, and the first filter screen is fixed to the first orifice plate by the first transverse pressing plate, the first longitudinal pressing plate, and the first rivet.
As a preferred embodiment mode of the present invention, the first handle is disposed above the first frame, and the first handle can be rotatably placed in a horizontal position.
As a preferred embodiment of the present invention, the second vertical filter screen plate includes a second filter screen, a second perforated plate, a second transverse pressing plate, a second longitudinal pressing plate, a second rivet, a second frame, and a second handle.
As a preferred embodiment of the present invention, a second orifice plate is disposed in the second frame, and the second filter screen is fixed to the second orifice plate by the second transverse pressing plate, the second longitudinal pressing plate, and the second rivet.
As a preferred embodiment of the present invention, the second handle is provided above the second frame, and the second handle can be hung to the hook when the second vertical filter screen panel is placed on the second barrier panel assembly.
In a preferred embodiment of the present invention, the bottom of the oil return area, the middle area and the oil suction area is provided with a first manual stop valve, a second manual stop valve and a third manual stop valve respectively for discharging sediment at the bottom of the oil tank.
As a preferred embodiment of the present invention, the oil return area, the intermediate area, and the oil suction area are respectively provided with a first magnetic plate level gauge, a second magnetic plate level gauge, and a third magnetic plate level gauge, which are used for monitoring liquid level heights of the oil return area, the intermediate area, and the oil suction area.
A method of using a turbine lube oil return filtration system, said method of use comprising the steps of:
step 1: the lubricating oil of the steam turbine enters an oil tank from an oil return port to carry out primary precipitation, impurities are precipitated at the bottom of an oil return area and then are periodically discharged through a first manual stop valve, the lubricating oil after primary precipitation enters an intermediate area after being coarsely filtered through a first vertical filter screen plate, and the liquid levels of the oil return area and the intermediate area are monitored;
step 2: the lubricating oil in the middle area is precipitated for the second time, impurities are precipitated to the bottom of the middle area and then are discharged periodically through a second manual stop valve, the lubricating oil precipitated for the second time is finely filtered through a second vertical filter screen plate and then enters an oil absorption area, and the liquid levels of the middle area and the oil absorption area are monitored;
and step 3: the lubricating oil in the oil absorption area is precipitated for the third time, impurities are precipitated to the bottom of the oil absorption area and then are periodically discharged through a third manual stop valve, and the lubricating oil precipitated for the third time is conveyed to the use area through an oil suction port and an oil pump.
As a preferred embodiment of the present invention, in step 1, when there is a liquid level difference between the oil return zone and the intermediate zone, the first vertical filter screen plate is clogged.
As a preferred embodiment of the present invention, in step 2, when there is a liquid level difference between the intermediate zone and the oil absorption zone, the second vertical filter screen plate is clogged.
As a preferred embodiment mode of the invention, the liquid level difference between the oil return area and the middle area and the liquid level difference between the middle area and the oil absorption area are monitored by the first ultrasonic liquid level difference meter and the second ultrasonic liquid level difference meter and then converted into standard electric signals, and when the liquid level difference exceeds a set value, the remote monitoring end sends out an alarm signal; or a certain liquid level difference exists through the first magnetic turning plate liquid level meter, the second magnetic turning plate liquid level meter and the third magnetic turning plate liquid level meter when the first vertical filter screen plate or the second vertical filter screen plate is blocked, and the first vertical filter screen plate or the second vertical filter screen plate needs to be replaced and cleaned.
As a preferred embodiment of the present invention, in step 1, when the first vertical filter screen plate needs to be cleaned due to too much blocked impurities, the first flange cover is opened, and after a new first vertical filter screen plate is placed in the first double-rail chute, the original first vertical filter screen plate is taken out through the first handle for cleaning.
As a preferred embodiment of the present invention, in step 2, when the second vertical filter screen plate needs to be cleaned due to too much blocked impurities, the second flange cover is opened, and after a new second vertical filter screen plate is placed in the second double-rail chute, the original second vertical filter screen plate is taken out and cleaned through the second handle.
Compared with the prior art, the invention has the beneficial effects that:
(1) the oil tank is divided into an oil return area, an intermediate area and an oil suction area by the partition plates, and the positions of the 2 vertical filter screen plates are optimized, so that the length of a circulation path of lubricating oil can be increased to the maximum extent, the retention time of the lubricating oil in the oil tank is further increased, and the cooling and heat dissipation of the lubricating oil, the separation of bubbles and the precipitation of impurities are facilitated;
(2) the flange cover is arranged on the top plate of the oil tank at the position of the vertical filter screen plate, the vertical filter screen plate is placed in the sliding chute and is provided with the double-track sliding chute, and the vertical filter screen plate can be replaced on line;
(3) by arranging the double-track sliding chute at the unfiltered side, impurities cannot fall to the filtered oil side when the filter screen is drawn out along the sliding chute, so that the filtered lubricating oil is prevented from being polluted;
(4) through the designed vertical filter screen plate structure, washing or replacement can be selected according to the use condition of the filter screen;
(5) the bottom of the oil tank is arranged to be in an inclined front-high back-low type, and three areas are respectively provided with a sewage discharge outlet, so that the periodic sewage discharge function of the oil tank can be realized;
(6) by arranging three geomagnetic turning plate liquid level meters in the oil return area, the middle area and the oil absorption area, whether two filter screens are blocked or not and the blocking degree can be judged according to the liquid levels of the geomagnetic turning plate liquid level meters;
(7) through set up ultrasonic wave level difference meter between oil return district and middle zone, between middle zone and the oil absorption district, can every filter plate both sides liquid level difference of crossing of remote monitoring to convert the liquid level into standard signal of telecommunication, when the filter screen blockked up, the liquid level difference of corresponding position exceeded the setting value, and remote monitoring end sends alarm signal.
Drawings
FIG. 1 is a front sectional view of a turbine lube oil return filtration system of the present invention;
FIG. 2 is a top cross-sectional view of a turbine lube oil return filtration system of the present invention;
FIG. 3 is an installation effect diagram of the first vertical filter screen plate;
FIG. 4 is an installation effect diagram of the second vertical filter screen plate;
FIG. 5 is a schematic structural view of a first baffle plate assembly;
FIG. 6 is a schematic structural view of a second diaphragm assembly;
FIG. 7 is a schematic view of a first vertical filter screen panel;
fig. 8 is a schematic structural diagram of a second vertical filter screen plate.
In the figure:
1-a first baffle assembly; 2-a first vertical filter screen plate; 3-a first flange cover; 4-a first ultrasonic level difference meter; 5-a second ultrasonic level difference meter; 6-a second flange cover; 7-a second baffle assembly; 8-a second vertical filter screen plate; 9-a first manual stop valve; 10-a second manual stop valve; 11-a third manual stop valve; 12-a first magnetic flip plate level gauge; 13-a second magnetic flip plate level gauge; 14-a third magnetic turn plate level gauge; 15-oil return port; 16-an oil suction opening; a-an oil return area; b-an intermediate zone; c-oil absorption area.
101-a first separator; 102-a first partition double-rail chute;
201-a first screen; 202-a first orifice plate; 203-a first transverse press plate; 204-a first longitudinal pressing plate; 205-a first rivet; 206-a first frame; 207-a first handle;
701-a second separator; 702-a second partition double-track chute; 703-hooking;
801-a second screen; 802-second orifice plate; 803-a second cross press plate; 804-a second longitudinal pressing plate; 805-a second rivet; 806-a second frame; 807-a second handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described herein are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step on the basis of the spirit of the present invention are within the scope of protection of the present invention.
Fig. 1 is a front sectional view of a turbine lubricant oil return filtering system of the present invention, fig. 2 is a top sectional view of a turbine lubricant oil return filtering system of the present invention, and as shown in fig. 1 and fig. 2, a turbine lubricant oil return filtering system of the present invention mainly includes an oil tank.
The interior of the oil tank is divided into an oil return area A, an intermediate area B and an oil suction area C.
Separate through first baffle subassembly 1 between oil return district A and the middle zone B, be provided with first perpendicular filter screen board 2 on the first baffle subassembly 1, first perpendicular filter screen board 2 can carry out the first filtration to steam turbine lubricating oil, and first perpendicular filter screen board 2 can be changed.
The middle area B and the oil absorption area C are separated through a second partition plate assembly 7, a second vertical filter screen plate 8 is arranged on the second partition plate assembly 7, the second vertical filter screen plate 8 can carry out secondary filtration on the lubricating oil of the steam turbine, and the second vertical filter screen plate 8 can be replaced.
The top of the oil tank is also provided with a first ultrasonic liquid level difference meter 4 which is respectively connected with the oil return area A and the middle area B and used for monitoring the liquid level difference between the oil return area A and the middle area B, and a second ultrasonic liquid level difference meter 5 which is respectively connected with the middle area B and the oil absorption area C and used for monitoring the liquid level difference between the oil return area A and the middle area B.
The oil return area a is provided with an oil return opening 15 and the oil suction area C is provided with an oil suction opening 16.
The oil return port 15 is arranged on the left side of the top of the oil return area A and extends to the bottom of the oil return area A, the first vertical filter screen 2 is arranged at the right upper corner of the first partition plate assembly 1, and the second vertical filter screen 8 is arranged at the left lower corner of the second partition plate assembly 7; the oil suction opening 16 is provided at the top right side of the oil suction region C and extends to the lower side portion of the oil suction region C. Or the oil return port 15 is arranged on the right side of the top of the oil return area A and extends to the bottom of the oil return area A, the first vertical filter screen 2 is arranged at the left upper corner of the first partition plate assembly 1, and the second vertical filter screen 8 is arranged at the right lower corner of the second partition plate assembly 7; the oil suction opening 16 is provided at the top left side of the oil suction region C and extends to the lower side portion of the oil suction region C. The length of a circulation path for enabling the turbine lubricating oil to be increased, the residence time of the turbine lubricating oil in the oil tank is further increased, and cooling and heat dissipation, bubble precipitation and impurity precipitation of the lubricating oil are facilitated.
As shown in fig. 3 and 5, the first partition plate assembly 1 includes a first partition plate 101 and a first partition plate double-rail chute 102, and a first vertical filter screen plate 2 is disposed on the first partition plate double-rail chute 102.
As shown in fig. 4 and 6, the second partition plate assembly 7 includes a second partition plate 701, a second partition plate double-rail chute 702, and a hook 703, the second partition plate double-rail chute 702 is provided with a second vertical filter screen plate 8, and the hook 703 is disposed above the second partition plate double-rail chute 702 for hanging the second vertical filter screen plate 8.
The first vertical filter screen plate 2 is used for coarse filtration of lubricating oil, and the filtration precision is 200 mu m. The upper cover of the oil tank above the first vertical filter screen plate 2 is provided with a first flange cover 3 for replacing the first vertical filter screen plate 2.
The second vertical filter screen plate 8 is used for fine filtering of lubricating oil, and the filtering precision is 160 mu m. And a second flange cover 6 is arranged on the upper cover of the oil tank above the second vertical filter screen plate 8 and used for replacing the second vertical filter screen plate 8.
The chutes of the two partition plates are arranged by adopting double rails, so that when the filter screen plate is replaced, only the flange cover needs to be opened, the standby filter screen plate is installed on the other reserved chute rail, and then the blocked filter screen plate is taken out. In order to avoid the situation that impurities on the filter screen fall to pollute lubricating oil when the vertical filter screen plate is drawn out, the reserved chute is arranged on the unfiltered side, so that the impurities cannot fall to the filtered oil side when the filter screen is drawn out along the chute, and the filtered lubricating oil is prevented from being polluted.
As shown in fig. 7, the first vertical screen plate 2 includes a first screen 201, a first perforated plate 202, a first transverse pressing plate 203, a first longitudinal pressing plate 204, a first rivet 205, a first frame 206, and a first handle 207. Be provided with first orifice plate 202 in the first frame 206, first filter screen 201 passes through first horizontal clamp plate 203, first vertical clamp plate 204 and first rivet 205 to be fixed on first orifice plate 202, and first handle 207 sets up in the top of first frame 206, and first handle 207 can rotate and place horizontal position for can not produce the space conflict with first blind flange 3 in top, lead to first blind flange 3 not to cover.
As shown in fig. 8, the second vertical filter screen panel 8 comprises a second filter screen 801, a second perforated panel 802, a second transverse press panel 803, a second longitudinal press panel 804, a second rivet 805, a second frame 806 and a second handle 807. A second pore plate 802 is arranged in the second frame 806, the second filter screen 801 is fixed on the second pore plate 802 through a second transverse pressing plate 803, a second longitudinal pressing plate 804 and a second rivet 805, the second handle 807 is arranged above the second frame 806, and when the second vertical filter screen plate 8 is placed on the second partition plate assembly 7, the second handle 807 can be hung at the position of the hook 703, and when the second vertical filter screen plate 8 is drawn out along the second partition plate double-track chute 702, the space above the oil tank is saved.
The bottom of the oil return area A, the bottom of the middle area B and the bottom of the oil suction area C are respectively provided with a first manual stop valve 9, a second manual stop valve 10 and a third manual stop valve 11 which are used for discharging sediments at the bottom of the oil tank, and the bottom of the oil tank is arranged to be inclined towards the stop valves, so that the sediments can be conveniently discharged.
The oil return area A, the middle area B and the oil absorption area C are respectively provided with a first magnetic turning plate liquid level meter 12, a second magnetic turning plate liquid level meter 13 and a third magnetic turning plate liquid level meter 14 which are used for monitoring the liquid level heights of the oil return area A, the middle area B and the oil absorption area C.
A method of using a turbine lube oil return filtration system, said method of use comprising the steps of:
step 1: the lubricating oil of the steam turbine enters an oil tank from an oil return port 15 to be precipitated for the first time, impurities are precipitated at the bottom of an oil return area A and then are periodically discharged through a first manual stop valve 9, the lubricating oil precipitated for the first time enters an intermediate area B after being coarsely filtered through a first vertical filter screen plate 2, and the liquid levels of the oil return area A and the intermediate area B are monitored;
step 2: the lubricating oil in the middle area B is precipitated for the second time, impurities are precipitated to the bottom of the middle area B, and then the lubricating oil is discharged periodically through a second manual stop valve 10, the lubricating oil precipitated for the second time is finely filtered through a second vertical filter screen plate 8 and then enters an oil absorption area C, and the liquid levels of the middle area B and the oil absorption area C are monitored;
and 3, step 3: the lubricating oil in the oil absorption area C is precipitated for the third time, impurities are precipitated at the bottom of the oil absorption area C and then are periodically discharged through a third manual stop valve 11, and the lubricating oil precipitated for the third time is conveyed to the use area through an oil suction port 16 and an oil pump.
In the step 1, when a liquid level difference exists between the oil return area A and the middle area B, the first vertical filter screen plate 2 is blocked. In the step 2, when a liquid level difference exists between the middle area B and the oil absorption area C, the second vertical filter screen plate 8 is blocked.
The liquid level difference between the oil return area A and the middle area B and the liquid level difference between the middle area B and the oil absorption area C are monitored by a first ultrasonic liquid level difference meter 4 and a second ultrasonic liquid level difference meter 5 and then converted into standard electric signals, and when the liquid level difference exceeds a set value, a remote monitoring end sends out an alarm signal; or a certain liquid level difference is observed in situ through the first magnetic turning plate liquid level meter 12, the second magnetic turning plate liquid level meter 13 and the third magnetic turning plate liquid level meter 14, at the moment, the first vertical filter screen plate 2 or the second vertical filter screen plate 8 is blocked, and needs to be replaced and cleaned.
In step 1, when the first vertical filter screen plate 2 needs to be cleaned due to excessive blocking impurities, the first flange cover 3 is opened, a new first vertical filter screen plate 2 is placed in the first double-rail chute 102, and then the original first vertical filter screen plate 2 is taken out and cleaned through the first handle 207.
In step 2, when the second vertical filter screen 8 needs to be cleaned due to excessive blocking impurities, the second flange cover 6 is opened, a new second vertical filter screen 8 is put into the second double-rail chute 702, and then the original second vertical filter screen 8 is taken out and cleaned through the second handle 807.
Compared with the prior art, the invention has the beneficial effects that:
(1) the oil tank is divided into an oil return area, an intermediate area and an oil suction area through the partition plates, and the positions of the 2 vertical filter screen plates are optimized, so that the length of a circulation path of lubricating oil can be increased to the maximum extent, the retention time of the lubricating oil in the oil tank is further increased, and the cooling and heat dissipation of the lubricating oil, the separation of bubbles and the precipitation of impurities are facilitated;
(2) the flange cover is arranged on the top plate of the oil tank at the position of the vertical filter screen plate, the vertical filter screen plate is placed in the sliding chute and is provided with the double-track sliding chute, and the vertical filter screen plate can be replaced on line;
(3) by arranging the double-track sliding chute at the unfiltered side, impurities cannot fall to the filtered oil side when the filter screen is drawn out along the sliding chute, so that the filtered lubricating oil is prevented from being polluted;
(4) through the designed vertical filter screen plate structure, washing or replacement can be selected according to the use condition of the filter screen;
(5) the bottom of the oil tank is arranged to be in an inclined front-high back-low type, and three areas are respectively provided with a sewage discharge outlet, so that the periodic sewage discharge function of the oil tank can be realized;
(6) by arranging three geomagnetic turning plate liquid level meters in the oil return area, the middle area and the oil absorption area, whether two filter screens are blocked or not and the blocking degree can be judged according to the liquid levels of the geomagnetic turning plate liquid level meters;
(7) through set up ultrasonic wave level difference meter between oil return district and middle zone, between middle zone and the oil absorption district, can every filter plate both sides liquid level difference of crossing of remote monitoring to convert the liquid level into standard signal of telecommunication, when the filter screen blockked up, the liquid level difference of corresponding position exceeded the setting value, and remote monitoring end sends alarm signal.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (15)
1. A turbine lube oil return filtration system comprising: the oil tank, its characterized in that:
the oil tank comprises an oil return area (A), an intermediate area (B) and an oil suction area (C);
the oil return area (A) is separated from the middle area (B) through a first partition plate assembly (1);
the first partition plate assembly (1) is provided with a first vertical filter screen plate (2), the first vertical filter screen plate (2) can be used for filtering lubricating oil of the steam turbine for the first time, and the first vertical filter screen plate (2) can be replaced;
the middle area (B) is separated from the oil absorption area (C) through a second partition plate component (7);
a second vertical filter screen plate (8) is arranged on the second partition plate assembly (7), the second vertical filter screen plate (8) can be used for carrying out secondary filtration on the lubricating oil of the steam turbine, and the second vertical filter screen plate (8) can be replaced;
the top of the oil tank is also provided with a first ultrasonic liquid level difference meter (4) which is respectively connected with the oil return area (A) and the middle area (B) and is used for monitoring the liquid level difference between the oil return area (A) and the middle area (B);
the top of the oil tank is also provided with a second ultrasonic liquid level difference meter (5) which is respectively connected with the middle area (B) and the oil absorption area (C) and is used for monitoring the liquid level difference between the middle area and the oil absorption area;
the oil return area (A) is provided with an oil return opening (15), and the oil suction area (C) is provided with an oil suction opening (16).
2. The turbine lubricant return oil filtration system of claim 1, wherein:
the first partition plate assembly (1) comprises a first partition plate (101) and a first partition plate double-rail sliding groove (102);
the first partition plate double-track sliding chute (102) is provided with a first vertical filter screen plate (2).
3. The turbine lubricant return oil filtration system of claim 2, wherein:
the second partition plate assembly (7) comprises a second partition plate (701), a second partition plate double-rail sliding groove (702) and a hook (703);
a second vertical filter screen plate (8) is arranged on the second partition plate double-track chute (702);
the hook (703) is arranged above the double-track sliding groove (702) of the second partition plate and used for hanging the second vertical filter screen plate (8).
4. The turbine lubricant return oil filtration system of claim 3, wherein:
the oil return port (15) is arranged on the left side of the top of the oil return area (A) and extends to the bottom of the oil return area (A);
the first vertical filter screen (2) is arranged at the right upper corner of the first partition plate assembly (1);
the second vertical filter screen (8) is arranged at the left lower corner of the second clapboard component (7);
the oil suction opening (16) is arranged at the right side of the top of the oil suction area (C) and extends to the lower side part of the oil suction area (C); the oil tank is used for increasing the length of a circulation path of turbine lubricating oil, and further increasing the residence time of the turbine lubricating oil in the oil tank.
5. The turbine lube oil return filtration system of claim 3 wherein:
the oil return port (15) is arranged on the right side of the top of the oil return area (A) and extends to the bottom of the oil return area (A);
the first vertical filter screen (2) is arranged at the upper left corner of the first partition plate assembly (1);
the second vertical filter screen (8) is arranged at the right lower corner of the second clapboard component (7);
the oil suction opening (16) is arranged on the left side of the top of the oil suction area (C) and extends to the lower side part of the oil suction area (C); the oil tank is used for increasing the length of a circulation path of turbine lubricating oil, and further increasing the residence time of the turbine lubricating oil in the oil tank.
6. The turbine lube oil return filtration system of any of claims 4 or 5 wherein:
the first vertical filter screen plate (2) is used for carrying out coarse filtration on lubricating oil, and the filtration precision is 200 mu m;
the second vertical filter screen plate (8) is used for fine filtering of lubricating oil, and the filtering precision is 160 mu m.
7. The turbine lubricant return oil filtration system of claim 6, wherein:
a first flange cover (3) is arranged on the upper cover of the oil tank above the first vertical filter screen plate (2) and used for replacing the first vertical filter screen plate (2);
and a second flange cover (6) is arranged on the upper cover of the oil tank above the second vertical filter screen plate (8) and used for replacing the second vertical filter screen plate (8).
8. The turbine lubricant return oil filtration system of claim 7, wherein:
the first vertical filter screen plate (2) comprises a first filter screen (201), a first pore plate (202), a first transverse pressing plate (203), a first longitudinal pressing plate (204), a first rivet (205), a first frame (206) and a first handle (207);
a first pore plate (202) is arranged in the first frame (206), and a first filter screen (201) is fixed on the first pore plate (202) through a first transverse pressing plate (203), a first longitudinal pressing plate (204) and a first rivet (205);
the first handle (207) is arranged above the first frame (206), and the first handle (207) can be rotatably placed to a horizontal position.
9. The turbine lubricant return oil filtration system of claim 7, wherein:
the second vertical filter screen plate (8) comprises a second filter screen (801), a second pore plate (802), a second transverse pressing plate (803), a second longitudinal pressing plate (804), a second rivet (805), a second frame (806) and a second handle (807);
a second pore plate (802) is arranged in the second frame (806), and a second filter screen (801) is fixed on the second pore plate (802) through a second transverse pressing plate (803), a second longitudinal pressing plate (804) and a second rivet (805);
the second handle (807) is arranged above the second frame (806), and when the second vertical filter screen panel (8) is placed on the second partition plate assembly (7), the second handle (807) can be hung to the hook (703).
10. The turbine lubricant return oil filtration system of claim 1, wherein:
the bottoms of the oil return area (A), the middle area (B) and the oil absorption area (C) are respectively provided with a first manual stop valve (9), a second manual stop valve (10) and a third manual stop valve (11) which are used for discharging sediments at the bottom of the oil tank;
the oil return area (A), the middle area (B) and the oil suction area (C) are respectively provided with a first magnetic turning plate liquid level meter (12), a second magnetic turning plate liquid level meter (13) and a third magnetic turning plate liquid level meter (14) which are used for monitoring the liquid level heights of the oil return area (A), the middle area (B) and the oil suction area (C).
11. A method of using the turbine lube oil return filtration system of any of claims 1 to 10 wherein:
the using method comprises the following steps:
step 1: the lubricating oil of the steam turbine enters an oil tank from an oil return port (15) to be precipitated for the first time, impurities are precipitated at the bottom of an oil return area (A) and then are periodically discharged through a first manual stop valve (9), the lubricating oil precipitated for the first time enters an intermediate area (B) after being coarsely filtered through a first vertical filter screen plate (2), and the liquid levels of the oil return area (A) and the intermediate area (B) are monitored;
step 2: lubricating oil in the middle area (B) is precipitated for the second time, impurities are precipitated to the bottom of the middle area (B) and then are periodically discharged through a second manual stop valve (10), the lubricating oil precipitated for the second time enters an oil absorption area (C) after being finely filtered through a second vertical filter screen plate (8), and the liquid levels of the middle area (B) and the oil absorption area (C) are monitored;
and step 3: the lubricating oil in the oil absorption area (C) is precipitated for the third time, impurities are precipitated to the bottom of the oil absorption area (C) and then are periodically discharged through a third manual stop valve (11), and the lubricating oil precipitated for the third time is conveyed to the use area through an oil suction port (16) and an oil pump.
12. The method of using a turbine lube oil return filtration system of claim 11 wherein:
in the step 1, when a liquid level difference exists between the oil return area (A) and the middle area (B), the first vertical filter screen plate (2) is blocked;
in the step 2, when a liquid level difference exists between the middle area (B) and the oil absorption area (C), the second vertical filter screen plate (8) is blocked.
13. The method of using a turbine lubricant return oil filtration system of claim 12, wherein:
after the liquid level difference between the oil return area (A) and the middle area (B) and the liquid level difference between the middle area (B) and the oil absorption area (C) are monitored by a first ultrasonic liquid level difference meter (4) and a second ultrasonic liquid level difference meter (5), the liquid level difference is converted into a standard electric signal, and when the liquid level difference exceeds a set value, an alarm signal is sent out by a remote monitoring end; or a certain liquid level difference exists through the first magnetic turning plate liquid level meter (12), the second magnetic turning plate liquid level meter (13) and the third magnetic turning plate liquid level meter (14) which are observed on site, at the moment, the first vertical filter screen plate (2) or the second vertical filter screen plate (8) is blocked, and the filter screen plate needs to be replaced and cleaned.
14. The method of using a turbine lubricant return oil filtration system of claim 13, wherein:
in the step 1, when the first vertical filter screen plate (2) needs to be cleaned due to excessive blocking of impurities, the first flange cover (3) is opened, a new first vertical filter screen plate (2) is placed in the first double-rail sliding groove (102), and then the original first vertical filter screen plate (2) is taken out for cleaning through the first handle (207).
15. The method of using a turbine lube oil return filtration system of claim 13 wherein:
in the step 2, when the second vertical filter screen plate (8) needs to be cleaned due to the fact that the second vertical filter screen plate blocks excessive impurities, the second flange cover (6) is opened, a new second vertical filter screen plate (8) is placed in the second double-rail sliding groove (702), and then the original second vertical filter screen plate (8) is taken out and cleaned through the second handle (807).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210294670.3A CN114542938A (en) | 2022-03-24 | 2022-03-24 | Turbine lubricating oil return oil filtering system and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210294670.3A CN114542938A (en) | 2022-03-24 | 2022-03-24 | Turbine lubricating oil return oil filtering system and using method |
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| Publication Number | Publication Date |
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| CN114542938A true CN114542938A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210294670.3A Pending CN114542938A (en) | 2022-03-24 | 2022-03-24 | Turbine lubricating oil return oil filtering system and using method |
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| CN (1) | CN114542938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070502A (en) * | 2022-07-26 | 2022-09-20 | 南京建克机械有限公司 | Oil tank structure |
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2022
- 2022-03-24 CN CN202210294670.3A patent/CN114542938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070502A (en) * | 2022-07-26 | 2022-09-20 | 南京建克机械有限公司 | Oil tank structure |
| CN115070502B (en) * | 2022-07-26 | 2023-02-14 | 南京建克机械有限公司 | Oil tank structure |
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