CN112098278A - Nuclear power plant lubricating oil loop monitoring device and method - Google Patents
Nuclear power plant lubricating oil loop monitoring device and method Download PDFInfo
- Publication number
- CN112098278A CN112098278A CN202011007165.3A CN202011007165A CN112098278A CN 112098278 A CN112098278 A CN 112098278A CN 202011007165 A CN202011007165 A CN 202011007165A CN 112098278 A CN112098278 A CN 112098278A
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- lubricating oil
- metal particle
- particle detection
- power plant
- nuclear power
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 239000002923 metal particle Substances 0.000 claims abstract description 79
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 238000002955 isolation Methods 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 230000000007 visual effect Effects 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims 1
- 239000010773 plant oil Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Dispersion Chemistry (AREA)
- Business, Economics & Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a nuclear power plant lubricating oil loop monitoring device which can be connected to a main lubricating oil loop and comprises a metal particle detection instrument and a pipeline for connecting the metal particle detection instrument to the main lubricating oil loop. The pipeline that is connected to metal particle detection instrument on the lubricating oil major loop is close to lubricating oil major loop one end and is equipped with once isolating valve on the pipeline between metal particle detection instrument and the lubricating oil major loop, is equipped with the instrument isolating valve on the pipeline between metal particle detection instrument and the once isolating valve, is equipped with the sample valve on the pipeline between metal particle detection instrument and the instrument isolating valve. The metal particle detection instrument is provided with an independently controlled alarm box for collecting, remotely transmitting and alarming the information of the metal particle detection instrument. In addition, the invention discloses a method for monitoring a lubricating oil loop of a nuclear power plant.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to a device and a method for monitoring a lubricating oil loop of a nuclear power plant.
Background
In a nuclear power plant, a large number of large-scale equipment such as a diesel engine, a steam turbine and the like exist, and a lubricating oil system is an important auxiliary system for normal operation of various large-scale equipment. In recent years, faults such as large equipment crankshaft breakage, cam burnout, bush blackening, gear damage and the like occur in a nuclear power plant, and the large equipment is shut down.
At present, in a nuclear power plant, the conventional detection means for a lubricating oil system loop of large equipment mainly comprises: 1) online monitoring: the method comprises the steps of measuring the pressure and the temperature of a lubricating oil loop, and monitoring the pressure and the temperature of a main lubricating oil path; 2) offline detection: generally, sampling analysis is carried out, after large-scale equipment is shut down, on-site sampling is carried out on lubricating oil, and sampling components are analyzed in a laboratory; 3) and (6) flaw detection.
However, the conventional detection means of the existing lubricating oil system loop has the following defects: 1) online monitoring: because large-scale equipment is large in size and large in lubricating area, the pressure and the temperature of all lubricating surfaces cannot be measured, and the faults of partial lubricating measuring points are insufficient to cause the abnormal changes of the pressure and the temperature of a main oil way, the abrasion faults of equipment parts cannot be found in time by monitoring the pressure and the temperature of the main oil way of lubricating oil on line; 2) offline detection: the off-line monitoring generally adopts sampling analysis, the on-site sampling of the lubricating oil is usually carried out after the large-scale equipment is shut down for a period of time, the timeliness is poor, and the early warning effect on operators cannot be timely realized; 3) flaw detection: and radiation hazard to operators.
Through analysis, the fault working condition can be monitored in an auxiliary mode through the early warning function of the lubricating oil system, early warning is carried out, and faults caused by abrasion of equipment are effectively avoided.
Disclosure of Invention
The invention aims to: the device and the method overcome the defects of the prior art, carry out auxiliary monitoring through the early warning function of a lubricating oil system, carry out early warning in advance and effectively avoid faults caused by abrasion of equipment.
In order to achieve the above object, the present invention provides a nuclear power plant lubricating oil circuit monitoring device, which is used for being connected to a main lubricating oil circuit, and comprises a metal particle detecting instrument and a pipeline for connecting the metal particle detecting instrument to the main lubricating oil circuit.
As an improvement of the monitoring device for the lubricating oil loop of the nuclear power plant, one end of a pipeline connecting the metal particle detection instrument to the main lubricating oil loop, which is adjacent to the main lubricating oil loop, is provided with a metal hose.
As an improvement of the device for monitoring the lubricating oil loop of the nuclear power plant, a primary isolation valve is arranged on a pipeline between the metal particle detection instrument and the main lubricating oil loop.
As an improvement of the lubricating oil loop monitoring device for the nuclear power plant, an instrument isolation valve is arranged on a pipeline between the metal particle detection instrument and the primary isolation valve, and a sampling valve is arranged on a pipeline between the metal particle detection instrument and the instrument isolation valve.
As an improvement of the lubricating oil loop monitoring device for the nuclear power plant, the metal particle detection instrument is provided with an independently controlled alarm box for collecting, remotely transmitting and alarming information of the metal particle detection instrument.
In order to achieve the above object, the present invention further provides a method for monitoring a lubricating oil circuit of a nuclear power plant, which comprises the following steps:
connecting a metal particle detection instrument to a main lubricating oil loop through a pipeline to form a metal particle detection loop;
an independently controlled alarm box is arranged on the metal particle detection instrument; and
when the metal particle detection instrument detects metal particles generated by serious abrasion, the alarm box gives an alarm.
As an improvement of the monitoring method for the lubricating oil loop of the nuclear power plant, the alarm is an audible and visual alarm.
As an improvement of the monitoring method for the lubricating oil loop of the nuclear power plant, the alarm box sends an audible and visual alarm and sends an alarm signal to the main control unit.
As an improvement of the monitoring method of the lubricating oil loop of the nuclear power plant, the conduction condition of the metal particle detection loop is that metal particles with the particle size not less than 0.8mm exist.
As an improvement of the monitoring method of the nuclear power plant lubricating oil loop, when metal particles with the particle size not less than 0.8mm are detected in the metal particle detection loop, the equipment is stopped for inspection, the content type of the metal particles and the properties of the wear particles are detected through sampling, and the wear state of corresponding parts in the equipment is analyzed and judged.
Compared with the prior art, the device and the method for monitoring the lubricating oil loop of the nuclear power plant have the following advantages: the metal particle detection loop is configured, so that the online monitoring of the metal particles in the lubricating oil loop of the large-scale equipment is realized, the impurity content of the lubricating oil is measured and analyzed, and the content of the metal particles is monitored, so that a decision basis is provided for the preventive maintenance of the large-scale equipment, and the method can be widely applied to the metal particle monitoring of the lubricating oil loop of other large-scale equipment.
Drawings
The following detailed description of the invention will be made in conjunction with the accompanying drawings and detailed description of the invention, in which:
fig. 1 is a schematic structural diagram of a lubricating oil circuit monitoring device of a nuclear power plant.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, the present invention provides a monitoring device for a lubricating oil circuit of a nuclear power plant, which is connected to a main lubricating oil circuit, and includes a metal particle detector 10 and a pipeline 20 connecting the metal particle detector 10 to the main lubricating oil circuit.
In the embodiment shown in fig. 1, the end of the line 20 connecting the metal particle detector 10 to the main circuit of the lubricant is a metal hose near the main circuit of the lubricant, which can sufficiently absorb the vibration during the test of the large-scale equipment. The primary isolation valve 30 is arranged on the pipeline 20 between the metal particle detection instrument 10 and the main lubricating oil loop, so that the main lubricating oil pipeline can be isolated from the loop of the metal particle detection instrument 10 in case of failure, and the function of the main lubricating oil loop and the safe operation of equipment are not influenced. An instrument isolation valve 40 is arranged on the pipeline 20 between the metal particle detection instrument 10 and the primary isolation valve 30, and a sampling valve 50 is arranged on the pipeline between the metal particle detection instrument and the instrument isolation valve.
According to a preferred embodiment of the present invention, the metal particle detecting instrument 10 is provided with an independently controlled alarm box 60 for collecting, transmitting and alarming information of the metal particle detecting instrument 10, so as to ensure the independence of the metal particle detecting instrument 10 and reduce the influence on the original control system loop.
Referring to fig. 1, the present invention further provides a method for monitoring a nuclear power plant lube circuit, which includes the following steps:
connecting the metal particle detection instrument 10 to a main lubricating oil loop through a pipeline 20 to form a metal particle detection loop;
an independently controlled alarm box 60 is arranged on the metal particle detecting instrument 10; and
when the metal particle detecting instrument 10 detects metal particles generated by severe wear, the alarm box 60 issues an alarm.
According to one embodiment of the present invention, the alarm is an audible and visual alarm, and the alarm box 60 sends an audible and visual alarm and sends an alarm signal to the main control early warning 70 to remind the operation and maintenance personnel to intervene. The conduction condition of the metal particle detection loop is that metal particles with the particle size not less than 0.8mm exist, and at the moment, the metal particles play a switch-like role. When the particle size of the metal particles is less than 0.8mm, the metal particle detection loop is not conducted and an alarm is triggered. When the particle size of the metal particles is larger than or equal to 0.8mm, the metal particle detection loop is conducted and alarms are triggered, and the occurrence of the metal particles with the size indicates that the inside of large equipment is seriously abraded. Therefore, when an alarm is triggered, whether metal particles accumulated in the early stage or metal particles just worn out need to be checked according to actual working conditions by stopping the equipment. The inspection method can check whether worn metal particles exist in the filter screen by detaching the detector meter part, analyze and judge the wear state of corresponding parts in the equipment by sampling and detecting the content type of the metal particles and the properties of the worn particles, and accordingly carry out the next operation and maintenance work.
In combination with the above detailed description of the embodiments of the present invention, it can be seen that the apparatus and method for monitoring a lubricating oil circuit of a nuclear power plant according to the present invention have the following advantages over the prior art: the metal particle detection loop is configured, so that the online monitoring of the metal particles in the lubricating oil loop of the large-scale equipment can be realized, the impurity content of the lubricating oil is measured and analyzed, the metal particle content is monitored, a decision basis is provided for the preventive maintenance of the large-scale equipment, and the method can be widely applied to the metal particle monitoring of the lubricating oil loop of other large-scale equipment.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a nuclear power plant's lubricating oil return circuit monitoring devices for connect on the lubricating oil major loop, its characterized in that, nuclear power plant's lubricating oil return circuit monitoring devices includes the pipeline that metal particle detection appearance and be connected to metal particle detection appearance on the lubricating oil major loop.
2. The nuclear power plant oil circuit monitoring device of claim 1, wherein the line connecting the metal particle detector gauge to the main oil circuit is a metal hose at an end adjacent to the main oil circuit.
3. The nuclear power plant lube circuit monitoring device of claim 1, wherein a primary isolation valve is provided in a line between the metal particle detector and the lube main circuit.
4. The nuclear power plant lubricating oil circuit monitoring device of claim 3, wherein a meter isolation valve is arranged on a pipeline between the metal particle detection meter and the primary isolation valve, and a sampling valve is arranged on a pipeline between the metal particle detection meter and the meter isolation valve.
5. The nuclear power plant lubricating oil circuit monitoring device of any one of claims 1-4, wherein the metal particle detection instrument is provided with an independently controlled alarm box for collecting, transmitting and alarming information of the metal particle detection instrument.
6. A nuclear power plant lubricating oil loop monitoring method is characterized by comprising the following steps:
connecting a metal particle detection instrument to a main lubricating oil loop through a pipeline to form a metal particle detection loop;
an independently controlled alarm box is arranged on the metal particle detection instrument; and
when the metal particle detection instrument detects metal particles generated by serious abrasion, the alarm box gives an alarm.
7. The method for monitoring the lubrication circuit of a nuclear power plant according to claim 6, wherein the alarm is an audible and visual alarm.
8. The method for monitoring the nuclear power plant lubricating oil circuit as claimed in claim 6, wherein the alarm box sends an audible and visual alarm and an alarm signal to a main control unit.
9. The method for monitoring the lube circuit of a nuclear power plant as claimed in claim 6, wherein the conduction condition of the metal particle detection circuit is the presence of metal particles having a particle size of not less than 0.8 mm.
10. The method for monitoring the nuclear power plant lubricating oil loop according to claim 9, wherein when metal particles with the particle size not less than 0.8mm are detected in the metal particle detection loop, the equipment is stopped for inspection, the content type of the metal particles and the properties of the wear particles are detected through sampling, and the wear state of corresponding parts in the equipment is analyzed and judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007165.3A CN112098278A (en) | 2020-09-23 | 2020-09-23 | Nuclear power plant lubricating oil loop monitoring device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007165.3A CN112098278A (en) | 2020-09-23 | 2020-09-23 | Nuclear power plant lubricating oil loop monitoring device and method |
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| Publication Number | Publication Date |
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| CN112098278A true CN112098278A (en) | 2020-12-18 |
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| CN202011007165.3A Pending CN112098278A (en) | 2020-09-23 | 2020-09-23 | Nuclear power plant lubricating oil loop monitoring device and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202671616U (en) * | 2012-05-09 | 2013-01-16 | 新兴铸管股份有限公司 | External roller way bearing block cooling system of furnace |
| CN108663213A (en) * | 2018-04-26 | 2018-10-16 | 中广核研究院有限公司 | A kind of online particle monitoring systems and method of nuclear power plant's Emergency diesel lubricating oil |
| CN208534830U (en) * | 2018-06-28 | 2019-02-22 | 常州市新港热电有限公司 | A kind of boiler feed pump lubricating pipe |
| CN110470822A (en) * | 2019-08-21 | 2019-11-19 | 岭澳核电有限公司 | A kind of nuclear power station equipment wearing monitoring system and method |
| CN211474309U (en) * | 2019-08-18 | 2020-09-11 | 江苏新海科技发展有限公司 | Single cylinder diesel oil tank oil-out flange joint structure |
-
2020
- 2020-09-23 CN CN202011007165.3A patent/CN112098278A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202671616U (en) * | 2012-05-09 | 2013-01-16 | 新兴铸管股份有限公司 | External roller way bearing block cooling system of furnace |
| CN108663213A (en) * | 2018-04-26 | 2018-10-16 | 中广核研究院有限公司 | A kind of online particle monitoring systems and method of nuclear power plant's Emergency diesel lubricating oil |
| CN208534830U (en) * | 2018-06-28 | 2019-02-22 | 常州市新港热电有限公司 | A kind of boiler feed pump lubricating pipe |
| CN211474309U (en) * | 2019-08-18 | 2020-09-11 | 江苏新海科技发展有限公司 | Single cylinder diesel oil tank oil-out flange joint structure |
| CN110470822A (en) * | 2019-08-21 | 2019-11-19 | 岭澳核电有限公司 | A kind of nuclear power station equipment wearing monitoring system and method |
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