CN114484252A - Oil return filter screen state detection equipment for lubricating oil system of single-shaft combined cycle unit - Google Patents
Oil return filter screen state detection equipment for lubricating oil system of single-shaft combined cycle unit Download PDFInfo
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- CN114484252A CN114484252A CN202111622987.7A CN202111622987A CN114484252A CN 114484252 A CN114484252 A CN 114484252A CN 202111622987 A CN202111622987 A CN 202111622987A CN 114484252 A CN114484252 A CN 114484252A
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- liquid level
- alarm
- level sensor
- filter screen
- lubricating oil
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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
- F16N29/04—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 enabling a warning to be given; enabling moving parts to be stopped
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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
- F16N19/006—Maintaining oil level
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention relates to a single-shaft combined cycle unit lubricating oil system return oil filter screen state detection device, which comprises: the device comprises a first liquid level sensor and a second liquid level sensor, wherein the first liquid level sensor is arranged in the trapezoidal vertical plate area, and the second liquid level sensor is arranged in the sewage draining area; an alarm; a controller connected to the first and second level sensors, respectively, and to the alarm connection, configured to perform the steps of: receiving the liquid level of the trapezoidal vertical plate area collected by a first liquid level sensor; receiving a liquid level of the blowdown area collected by a second liquid level sensor; and calculating the difference value between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area, judging whether the difference value exceeds a preset threshold value, and if so, outputting an alarm signal for representing the blockage of the oil return filter screen and controlling an alarm to give an alarm. Compared with the prior art, the invention has the advantages of solving the problem of protection and stopping of the lubricating oil pump and the like.
Description
Technical Field
The invention relates to the field of monitoring of a lubricating oil system of a single-shaft combined cycle unit, in particular to a device for detecting the state of an oil return filter screen of the lubricating oil system of the single-shaft combined cycle unit.
Background
The lubricating oil system of the single-shaft combined cycle unit is generally a pressurized forced circulation system, lubricating oil is supplied to each bearing and a sealing oil system through an oil supply main pipe by a lubricating oil pump and then returns to a lubricating oil tank through an oil return main pipe, and the structure of the lubricating oil tank is shown in fig. 1 and 2.
In order to ensure the return oil quality of the lubricating oil, the return oil of the lubricating oil enters the vertical plate area through the oil return filter screen after passing through the sewage discharge area, and the circulation process is completed. In the normal circulation process, the consumption of lubricating oil is extremely low, but in the daily operation process of a unit, the oil level of a lubricating oil tank often drops abnormally, leakage can occur due to observation of an oil level gauge, and finally the phenomenon that the pressure of a lubricating oil main pipe is lower than a protection value to trigger the protection and the stopping of a lubricating oil pump is caused.
Disclosure of Invention
Because the oil level often drops abnormally, the pressure of a main lubricating oil pipe is low because the lubricating oil pump cannot suck lubricating oil normally due to the low oil level of an oil tank, and each bearing cannot obtain a reliable lubricating oil source, so that each bearing bush of each bearing can be damaged; even the pressure of a main pipe of lubricating oil is lower than a protection value to trigger the protection of a lubricating oil pump to stop, and each bearing of the unit is cut off to cause the serious consequence of main equipment damage.
The invention aims to provide a device for detecting the state of an oil return filter screen of a lubricating oil system of a single-shaft combined cycle unit, which is characterized in that liquid level sensors are respectively arranged in a trapezoidal vertical plate area and a sewage discharge area, and the state of the oil return filter screen is detected by judging the liquid level difference between the trapezoidal vertical plate area and the sewage discharge area, so that the problem that the pressure of a main lubricating oil pipe is low and each bearing bush of the unit is damaged due to the fact that the oil level of a lubricating oil tank frequently drops abnormally or the pressure of the main lubricating oil pipe is lower than a protection value to trigger the protection and the shutdown of a lubricating oil pump so that each bearing of the unit is cut off and main equipment is damaged is avoided.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a unipolar combined cycle unit lubricating oil system can return oil filter screen state check out test set, includes:
the device comprises a first liquid level sensor and a second liquid level sensor, wherein the first liquid level sensor is arranged in the trapezoidal vertical plate area, and the second liquid level sensor is arranged in the sewage draining area;
an alarm;
a controller connected to the first and second level sensors, respectively, and an alarm connection configured to perform the steps of:
receiving the liquid level of the trapezoidal vertical plate area collected by a first liquid level sensor;
receiving a liquid level of the blowdown area collected by a second liquid level sensor;
and calculating the difference value between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area, judging whether the difference value exceeds a preset threshold value, if so, outputting an alarm signal for representing the blockage of the oil return filter screen, and controlling the alarm to give an alarm.
The first liquid level sensor and the second liquid level sensor are connected with the controller through a communication bus.
The first liquid level sensor and the second liquid level sensor are non-contact liquid level sensors.
The alarm comprises an alarm indicator light and a buzzer alarm.
Calculate the regional liquid level of liquid level and the regional liquid level of blowdown of trapezoidal riser difference to judge whether this difference exceeds the threshold value of preconfiguration, if yes, then output and be used for the warning signal of sign return oil filter screen jam and control the alarm is reported to the police, specifically includes:
calculating the difference value between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area;
judging whether the difference exceeds a pre-configured first threshold value, if so, outputting a first-level signal for representing the blockage of the oil return filter screen to control the alarm to give an alarm, and:
and judging whether the difference value exceeds a second threshold value which is preset, if so, outputting a secondary signal for representing the blockage of the oil return filter screen to control the alarm to give an alarm.
The first threshold is 100 millimeters.
The second threshold is 200 mm.
Compared with the prior art, the invention has the following beneficial effects:
1. the liquid level sensors are respectively arranged in the trapezoidal vertical plate area and the sewage discharge area, and the state of the oil return filter screen is detected by judging the liquid level difference between the trapezoidal vertical plate area and the sewage discharge area, so that the problem of stopping the lubricating oil pump protection caused by frequent abnormal drop of the oil level of the lubricating oil tank is avoided.
2. By adopting the non-contact liquid level sensor, the original oil way can not be influenced, and the stability is improved.
3. Two-stage alarming is designed, refining is achieved, and monitoring accuracy is improved.
Drawings
FIG. 1 is a schematic view of a first angled configuration of a lubricant reservoir;
FIG. 2 is a second angle schematic view of the oil sump;
FIG. 3 is a schematic diagram of the apparatus of the present application;
wherein: 1. exchange lubricating oil, 2, exchange lubricating oil pump, 3, direct current lubricating oil pump, 4, first apical axis oil pump, 5, second apical axis oil pump, 6, apical axis oil filter screen, 7, the blowdown is regional, 8, the inclined bottom plate, 9, the baffle, 10, the oil feed is strained, 11, trapezoidal riser is regional, 12, the oil inlet, 13, the level gauge, 14, the apron, 15, the oil extraction cigarette fan, 16, the oil separator, 17, the level switch, 18, the regional import of trapezoidal riser, 101, first level sensor, 102, second level sensor, 103, the controller.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
For the lubricating oil system shown in fig. 1 and 2, the return oil of the lubricating oil enters the vertical plate area through the oil return filter screen after passing through the sewage discharge area, and the circulation process is completed. Therefore, the liquid level sensor is additionally arranged in the trapezoid vertical plate area and the sewage discharge area of the lubricating oil tank, the liquid level difference at two sides is additionally arranged for alarming, the working condition of the oil return filter screen is effectively monitored, and defect elimination processing is timely found.
The specific implementation mode can be realized by a DCS field bus or by designing an independent hardware alarm circuit, the cost of the DCS field bus is low, and the reliability of the DCS field bus is high.
Example 1
In this embodiment, realize based on DCS field bus, as shown in fig. 3, provide a unipolar combined cycle unit lubricating oil system can return oil filter screen state check out test set, include:
the device comprises a first liquid level sensor and a second liquid level sensor, wherein the first liquid level sensor is arranged in the trapezoidal vertical plate area, and the second liquid level sensor is arranged in the sewage draining area;
an alarm;
a controller connected to the first and second level sensors, respectively, and an alarm connection configured to perform the steps of:
receiving the liquid level of the trapezoidal vertical plate area collected by a first liquid level sensor;
receiving a liquid level of the blowdown area collected by a second liquid level sensor;
and calculating the difference value between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area, judging whether the difference value exceeds a preset threshold value, and if so, outputting an alarm signal for representing the blockage of the oil return filter screen and controlling an alarm to give an alarm.
The liquid level sensors are respectively arranged in the trapezoidal vertical plate area and the sewage discharge area, and the state of the oil return filter screen is detected by judging the liquid level difference between the trapezoidal vertical plate area and the sewage discharge area, so that the problem of stopping the lubricating oil pump protection caused by frequent abnormal drop of the oil level of the lubricating oil tank is avoided.
In this embodiment, connect through communication bus between first level sensor and the second level sensor and the controller, the wiring is convenient.
In this embodiment, first level sensor and second level sensor are non-contact level sensor, can not influence original oil circuit, improve stability.
In this embodiment, the alarm includes alarm indicator and buzzer siren, provides more diversified warning.
In this embodiment, first level sensor and second level sensor pass through the support fixed, and specific mounting means is as shown in the figure, adopts two radar type level gauges, fixes respectively at the oil tank top and arranges in trapezoidal riser region and blowdown region.
In this embodiment, calculate the difference of the regional liquid level of liquid level and the blowdown region of trapezoidal riser to judge whether this difference exceeds the threshold value of pre-configuration, if be, then export the alarm signal that is used for the sign oil return filter screen to block up and control the alarm and report to the police, specifically include:
calculating the difference value between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area;
judging whether the difference exceeds a pre-configured first threshold value, if so, outputting a first-level signal control alarm for representing the blockage of the oil return filter screen, and:
and judging whether the difference value exceeds a second threshold value which is pre-configured, if so, outputting a secondary signal for representing the blockage of the oil return filter screen to control the alarm to give an alarm.
Two-stage alarming is designed, refining is achieved, and monitoring accuracy is improved, wherein the first threshold value is 100 millimeters, and the second threshold value is 200 millimeters.
Example 2:
this embodiment adopts hardware circuit to realize warning return circuit, and is concrete, provides a unipolar combined cycle unit lubricating oil system can return oil filter screen state check out test set, includes:
the device comprises a first liquid level sensor and a second liquid level sensor, wherein the first liquid level sensor is arranged in the trapezoidal vertical plate area, and the second liquid level sensor is arranged in the sewage draining area;
an alarm and a controller;
first level sensor and second level sensor are as liquid level transmitter, can convert the information of liquid level into the potential signal and outwards send to the controller, and the controller includes devices such as comparator, through demarcating the relation of potential and liquid level height, can compare the potential, reports to the police when the potential difference exceeds the setting value.
Claims (7)
1. The utility model provides a unipolar combined cycle unit lubricating oil system can return oil filter screen state check out test set which characterized in that includes:
the device comprises a first liquid level sensor and a second liquid level sensor, wherein the first liquid level sensor is arranged in the trapezoidal vertical plate area, and the second liquid level sensor is arranged in the sewage draining area;
an alarm;
a controller connected to the first and second level sensors, respectively, and an alarm connection configured to perform the steps of:
receiving the liquid level of the trapezoidal vertical plate area collected by a first liquid level sensor;
receiving a liquid level of the blowdown area collected by a second liquid level sensor;
and calculating the difference value between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area, judging whether the difference value exceeds a preset threshold value, if so, outputting an alarm signal for representing the blockage of the oil return filter screen, and controlling the alarm to give an alarm.
2. The single-shaft combined cycle unit lubricating oil system oil return filter screen state detection device as claimed in claim 1, wherein the first liquid level sensor and the second liquid level sensor are connected with the controller through a communication bus.
3. The single-shaft combined cycle unit lubricating oil system oil filter screen state detection device as claimed in claim 1, wherein the first liquid level sensor and the second liquid level sensor are non-contact liquid level sensors.
4. The single-shaft combined cycle unit lubricating oil system oil filter screen state detection device as claimed in claim 1, wherein the alarm comprises an alarm indicator light and a buzzer alarm.
5. The single-shaft combined cycle unit lubricating oil system oil return filter screen state detection equipment as claimed in claim 1, wherein the difference between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area is calculated, whether the difference exceeds a pre-configured threshold value is judged, if yes, an alarm signal for representing oil return filter screen blockage is output, and the alarm is controlled to give an alarm, and the equipment specifically comprises:
calculating the difference value between the liquid level of the trapezoidal vertical plate area and the liquid level of the sewage discharge area;
judging whether the difference exceeds a pre-configured first threshold value, if so, outputting a first-level signal for representing the blockage of the oil return filter screen to control the alarm to give an alarm, and:
and judging whether the difference value exceeds a second threshold value which is preset, if so, outputting a secondary signal for representing the blockage of the oil return filter screen to control the alarm to give an alarm.
6. The apparatus according to claim 5, wherein the first threshold is 100 mm.
7. The apparatus according to claim 5, wherein the second threshold is 200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622987.7A CN114484252A (en) | 2021-12-28 | 2021-12-28 | Oil return filter screen state detection equipment for lubricating oil system of single-shaft combined cycle unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622987.7A CN114484252A (en) | 2021-12-28 | 2021-12-28 | Oil return filter screen state detection equipment for lubricating oil system of single-shaft combined cycle unit |
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| CN114484252A true CN114484252A (en) | 2022-05-13 |
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| CN202111622987.7A Pending CN114484252A (en) | 2021-12-28 | 2021-12-28 | Oil return filter screen state detection equipment for lubricating oil system of single-shaft combined cycle unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117968157A (en) * | 2024-03-29 | 2024-05-03 | 珠海格力电器股份有限公司 | Air conditioning unit and air conditioner |
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| CN206965290U (en) * | 2017-03-30 | 2018-02-06 | 华润电力焦作有限公司 | A kind of monitoring system of petrol station filter screen differential pressure |
| CN209161669U (en) * | 2018-10-26 | 2019-07-26 | 江苏道同环境科技有限公司 | Oil-containing sewage treatment system |
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2021
- 2021-12-28 CN CN202111622987.7A patent/CN114484252A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201606120U (en) * | 2009-12-30 | 2010-10-13 | 上海电气电站设备有限公司 | Steam turbine unit lubricating oil tank |
| CN103157321A (en) * | 2011-12-15 | 2013-06-19 | 中国石油天然气集团公司 | Automatic detection alarm method and device for clogging of high pressure airtight filter |
| CN104765389A (en) * | 2015-03-24 | 2015-07-08 | 青岛海兴电子有限公司 | Micro filter liquid level control device and control method based on micro filter liquid level |
| CN106246247A (en) * | 2016-09-29 | 2016-12-21 | 华北电力科学研究院有限责任公司 | A kind of thermal power plant's Turbo-generator Set lubricating oil system and on off control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117968157A (en) * | 2024-03-29 | 2024-05-03 | 珠海格力电器股份有限公司 | Air conditioning unit and air conditioner |
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