CN215636467U - Lubricating oil filtering and oil quantity online adjusting device - Google Patents
Lubricating oil filtering and oil quantity online adjusting device Download PDFInfo
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- CN215636467U CN215636467U CN202121839445.0U CN202121839445U CN215636467U CN 215636467 U CN215636467 U CN 215636467U CN 202121839445 U CN202121839445 U CN 202121839445U CN 215636467 U CN215636467 U CN 215636467U
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Abstract
The utility model discloses a lubricating oil filtering and oil quantity online adjusting device which comprises a filter screen, an oil quantity adjusting valve, a pressure monitoring system and a flow monitoring system, wherein the filter screen is arranged on the lubricating oil filtering and oil quantity online adjusting device; the inlet of the filter screen is communicated with the oil supply main pipe, and the outlet of the filter screen is connected with the oil quantity regulating valve; the outlet of the oil quantity regulating valve is communicated with the oil inlet pipeline; the pressure monitoring system is arranged on two sides of the oil quantity regulating valve; the flow monitoring system is arranged on the oil inlet pipeline. According to the lubricating oil filtering and oil quantity online adjusting device, the oil circulation time can be effectively shortened in the lubricating oil filtering process, the unit usable time is prolonged, meanwhile, necessary lubricating oil flow adjustment can be timely carried out on the bearings which work abnormally in the operation process, and the safety and the economy of the unit are improved.
Description
Technical Field
The utility model belongs to the technical field of thermal power plant safety, and relates to a lubricating oil filtering and oil quantity online adjusting device.
Background
At present, the lubricating oil quantity distribution mode of each bearing of a lubricating oil system of most of turbo generator sets adopts a mode that a throttling orifice plate is arranged on a bearing oil inlet channel to limit the flow. The diameter of the bearing oil inlet throttling orifice plate is given in advance by a host manufacturer and is pre-installed on the bearing sleeve, the total flow of lubricating oil for normal operation of the unit is provided by a lubricating oil pump, and the oil quantity of each bearing is distributed by each bearing throttling orifice plate. According to the design mode of the existing system, the flow rate of lubricating oil of each bearing can not be adjusted in the running process of the unit, the load of each bearing of the unit in the running process can be changed, and in addition, because of the deviation of the shafting load adjustment result and the design value, the abnormal rise of the temperature of each bearing can not be avoided.
Most of the oil inlet pipelines of the lubricating oil system of the steam turbine generator unit are only provided with normal filter screens (with larger design apertures) behind the oil cooler, and the rear oil inlet pipelines are not provided with filter screens for the purpose of industrial standard specification. The oil filtering work in the shutdown stage and the overhaul stage of the unit can only accelerate the progress of oil circulation by temporarily adding the oil filter, and generally, after other work of the unit is completed, the oil circulation stage can be arranged for about 2-4 days so as to meet the requirement that the lubricating oil quality is qualified before the unit is started. Through add detachable lubricating oil filter screen at each bearing oil inlet pipe end, can effectively improve oil cycle efficiency, reduce the time of oil cycle and the unit unnecessary downtime.
According to the design of the existing lubricating oil system, the steam turbine generator unit has the following two problems: the oil inlet pipeline of each bearing of the turbo generator set is not provided with a filter screen, and lubricating oil can be filtered only by temporarily adding an oil filter during shutdown maintenance, so that the lubricating oil filtering time is influenced, and the preparation time before the start of the turbo generator set is increased. Meanwhile, the oil inlet amount of lubricating oil of each bearing cannot be changed after the installation work is finished, and even if the metal temperature of the bearing rises or the bearing works abnormally during the operation, the flow of the lubricating oil cannot be adjusted on line.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a lubricating oil filtering and oil quantity online adjusting device.
In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:
a lubricating oil filtering and oil amount online adjusting device comprises: the device comprises a filter screen, a main lubricating oil supply pipe, an oil quantity adjusting valve, an oil inlet pipeline, a pressure monitoring system and a flow monitoring system;
the inlet of the filter screen is communicated with the lubricating oil supply main pipe, and the outlet of the filter screen is connected with the inlet of the oil quantity regulating valve; the outlet of the oil quantity regulating valve is communicated with the oil inlet pipeline; the pressure monitoring system is arranged on two sides of the oil quantity regulating valve; the flow monitoring system is arranged on the oil inlet pipeline.
The utility model further improves the following steps:
the filter screen is made in a laser drilling mode.
The filter screen is detachable structure.
And the inlet of the lubricating oil supply main pipe is connected with an oil cooler of a lubricating oil system and then is connected with an oil supply pipeline.
The pressure monitoring system includes a first pressure measurement device and a second pressure measurement device disposed on opposite sides of the oil quantity adjustment valve.
The first pressure measuring device and the second pressure measuring device are respectively connected with the first signal processor.
The flow monitoring system is a flow measuring device arranged on an outlet pipeline of the oil quantity adjusting valve.
The flow measuring device is connected with the second signal processor.
Compared with the prior art, the utility model has the following beneficial effects:
according to the lubricating oil filtering and oil quantity online adjusting device, the oil circulation time can be effectively shortened in the lubricating oil filtering process, the unit usable time is prolonged, meanwhile, necessary lubricating oil flow adjustment can be timely carried out on the bearings which work abnormally in the operation process, and the safety and the economy of the unit are improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of an apparatus for filtering lubricating oil and adjusting the amount of oil on line according to an embodiment of the present invention.
Wherein: 1-filter screen, 2-main pipe of lubricating oil supply, 3-oil quantity regulating valve, 4-oil supply pipeline behind oil cooler of lubricating oil system, 5-oil inlet pipeline, 6-pressure monitoring system and 7-flow monitoring system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience and simplicity, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the embodiment of the utility model discloses a lubricating oil filtering and oil amount online adjusting device, which comprises a filter screen 1; a lubricating oil supply main pipe 2; an oil amount adjusting valve 3; a lubricating oil system oil cooler rear oil supply pipeline 4; each bearing lubricating oil enters the oil pipeline 5; a pressure monitoring system 6; a flow monitoring system 7.
The filter screen 1 is in a laser drilling mode, an inlet of the filter screen 1 is connected with the lubricating oil supply main pipe 2, and an outlet of the filter screen 1 is connected with an inlet of the oil amount adjusting valve 3;
the lubricating oil supply system comprises a lubricating oil supply main pipe 2, wherein the inlet of the lubricating oil supply main pipe 2 is connected with a lubricating oil system oil cooler rear oil supply pipeline 4, and the outlet of the lubricating oil supply main pipe is connected with a filter screen 2 of each bearing of the steam turbine generator unit;
the inlet of the oil quantity regulating valve 3 is connected with the filter screen 1, and the outlet of the oil quantity regulating valve 3 is connected with a lubricating oil inlet pipeline 5 of each bearing of the turbo generator set;
and a pressure monitoring system 6, wherein the pressure monitoring system 6 is arranged on an inlet pipeline and an outlet pipeline of the oil quantity adjusting valve 3 and is used for adjusting the flow rate of the lubricating oil passing through the oil quantity adjusting valve 3.
And the flow monitoring system 7 is arranged on an outlet pipeline of the oil amount adjusting valve 3, and is used for monitoring the actual lubricating oil flow passing through the oil amount adjusting valve 3.
The filter screen 1 adopts a detachable structure. In the stop operation stage of the unit, a filter screen 1 is arranged to accelerate the flushing speed of the lubricating oil, and the lubricating oil filter screen is taken out when the oil quality is qualified; the pressure monitoring system 6 includes a first pressure measuring device 61 provided in an inlet line of the oil amount adjusting valve 3, and a second pressure measuring device 62 provided in an outlet line of the oil amount adjusting valve 3. The flow rate monitoring system 7 is provided with a first flow rate measuring device 71 provided in an outlet line of the oil amount adjusting valve 3.
Lubricating oil passes through the filter screen 1, gets into oil mass adjusting valve 3, and the lubricating oil that gets into each bearing passes through oil mass adjusting valve control, finally gets into each bearing lubricating oil inlet pipe way.
The filter screen 1 is put into use in the oil circulation filtration stage of maintenance and shutdown. The lubricating oil quality can reach the required level before the unit starts at the fastest speed, and lubricating oil passes through the filter screen 1 (the filter screen is in the filtration state this moment), gets into oil mass regulating valve 3 (the regulating valve opens to the biggest this moment), finally gets into each bearing lubricating oil inlet pipe way. And when the lubricating oil quality meets the starting requirement, the filter screen in the filter screen 1 (the filter screen is in a dismantling state at the moment) is dismantled so as to meet the requirement of the industry specification. Under the above-mentioned operating mode, filter screen 1 can save the time of oil circulation to the maximum extent when reaching the required lubricating oil quality standard of start.
The oil quantity regulating valve 3 can be put into use under various working conditions of running and stopping of the unit. Under various working conditions of the turbo generator unit, lubricating oil firstly passes through the filter screen 1 (the filter screen is put into operation in the shutdown stage, and the filter screen is removed in the operating state), then flows through the oil quantity adjusting valve 3 (the initial position of the adjusting valve in the operating stage is the valve opening given by a manufacturer), and finally enters the lubricating oil inlet pipeline of each bearing of the turbo generator unit. When the bearing works abnormally (temperature or stability is abnormal), the flow of the lubricating oil can be adjusted to a value which the system should reach through the oil quantity adjusting valve 3. The machine set can meet the requirement of on-line adjustment and distribution of the bearing lubricating oil flow under various working conditions.
The control strategy of the screen 1 is as follows: in the machine set stopping stage or the stage that the lubricating oil quality is lower than the standard and should reach the value, the filter screen in the filter screen 1 should be installed, and the part should be in the filter screen working state. After the lubricating oil quality reaches the standard requirement before the unit starts, the filter screen in the filter screen 1 should be removed in time, and the filter screen 1 does not have the filtering capability at this moment, just flows through the passageway in front of the oil mass adjusting valve 3 as the lubricating oil.
The control strategy for the fuel quantity regulating valve 3 is as follows: in the unit operation stage, the valve opening degree of the oil quantity adjusting valve 3 is in the opening degree corresponding to the design flow of a steam turbine manufacturer, and if the flow of lubricating oil needs to be adjusted in the operation process, the oil quantity adjusting valve 3 is adjusted. The adjustment process should be combined with the first pressure measuring device 61 provided on the inlet line of the oil amount adjusting valve 3 and the second pressure measuring device 62 provided on the outlet line of the oil amount adjusting valve 3 to calculate the pressure difference before and after the oil amount adjusting valve 3, obtain the flow rate of the lubricating oil according to the valve flow rate characteristic curve, and compare the flow rate with the measurement result of the first flow rate measuring device 71 provided on the outlet line of the oil amount adjusting valve 3.
In the embodiment, the filter screen arrangement of the lubricating oil system can be ensured to meet the requirement of the industry specification, the oil circulation time of the lubricating oil can be shortened, the dynamic adjustment of the oil supply flow of the lubricating oil of each bearing can be realized, and the safety and the economy of the unit are improved.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a lubricating oil filters and online adjusting device of oil mass which characterized in that includes: the device comprises a filter screen (1), a lubricating oil supply main pipe (2), an oil quantity adjusting valve (3), an oil inlet pipeline (5), a pressure monitoring system (6) and a flow monitoring system (7);
an inlet of the filter screen (1) is communicated with the lubricating oil supply main pipe (2), and an outlet of the filter screen (1) is connected with an inlet of the oil quantity regulating valve (3); the outlet of the oil quantity regulating valve (3) is communicated with an oil inlet pipeline (5); the pressure monitoring system (6) is arranged on two sides of the oil quantity adjusting valve (3); the flow monitoring system (7) is arranged on the oil inlet pipeline (5).
2. The device for filtering lubricating oil and adjusting the quantity of oil on-line according to claim 1, characterized in that the filter screen (1) is made in the form of laser drilling.
3. The device for filtering lubricating oil and adjusting the amount of oil on-line according to claim 1 or 2, characterized in that the filter screen (1) is of a detachable construction.
4. The device for filtering and adjusting the amount of lubricating oil according to claim 1, wherein the inlet of the lubricating oil supply main pipe (2) is connected with a rear oil supply pipeline (4) of an oil cooler of a lubricating oil system.
5. The device for filtering and adjusting the amount of lubricating oil according to claim 1, characterized in that the pressure monitoring system (6) comprises a first pressure measuring device (61) and a second pressure measuring device (62) arranged on either side of the oil amount regulating valve (3).
6. The device for filtering and adjusting the amount of lubricating oil according to claim 5, wherein the first pressure measuring device (61) and the second pressure measuring device (62) are respectively connected to a first signal processor.
7. The device for filtering lubricating oil and adjusting the amount of oil on-line according to claim 1, characterized in that the flow monitoring system (7) is a flow measuring device (71) arranged on the outlet conduit of the oil amount adjusting valve (3).
8. The lubricating oil filtering and oil quantity online adjustment device according to claim 7, characterized in that the flow measuring device (71) is connected with a second signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121839445.0U CN215636467U (en) | 2021-08-06 | 2021-08-06 | Lubricating oil filtering and oil quantity online adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121839445.0U CN215636467U (en) | 2021-08-06 | 2021-08-06 | Lubricating oil filtering and oil quantity online adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215636467U true CN215636467U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121839445.0U Active CN215636467U (en) | 2021-08-06 | 2021-08-06 | Lubricating oil filtering and oil quantity online adjusting device |
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| Country | Link |
|---|---|
| CN (1) | CN215636467U (en) |
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2021
- 2021-08-06 CN CN202121839445.0U patent/CN215636467U/en active Active
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