CN110805835A - Intelligent water leakage monitoring method for converter valve cooling system - Google Patents
Intelligent water leakage monitoring method for converter valve cooling system Download PDFInfo
- Publication number
- CN110805835A CN110805835A CN201911136003.7A CN201911136003A CN110805835A CN 110805835 A CN110805835 A CN 110805835A CN 201911136003 A CN201911136003 A CN 201911136003A CN 110805835 A CN110805835 A CN 110805835A
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- China
- Prior art keywords
- optical fiber
- valve
- water leakage
- alarm
- control device
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Abstract
An intelligent method for monitoring water leakage of a converter valve cooling system belongs to the technical field of electric power monitoring and comprises the following steps: data acquisition → optical fiber abnormity alarm device → valve control device → control valve. The invention has the beneficial effects that: (1) the accuracy is high; (2) the operation and maintenance workload is reduced; (3) the cost is low, and the economic benefit is high; (4) the propulsion power is ubiquitous in the internet of things.
Description
Technical Field
The invention relates to the technical field of power monitoring, in particular to an intelligent method for monitoring water leakage of a converter valve cooling system.
Background
The converter transformer substation is a system for performing mutual energy conversion between direct current and alternating current in a direct current transmission project, a core equipment converter of the converter transformer substation mainly has the function of performing alternating current-direct current conversion, the converter transformer consists of a converter valve and a converter transformer, the converter valve is high in manufacturing cost, heat is generated during the operation of the converter valve, the heat rises all the time and can influence the operation condition of internal elements, effective cooling needs to be performed on the converter transformer substation, cooling of the converter station in the world is mostly in a water cooling mode at present, water cooling systems in the converter valve are formed by connecting a plurality of sections of PVDF (polyvinylidene fluoride) and metal pipes, water leakage can be caused during the operation, abnormal conditions such as discharge among converter equipment can be caused when internal water leaks, and the whole valve tower and adjacent valve towers can be directly.
In order to ensure the stable operation of a power grid and equipment, a set of water leakage monitoring device is configured on the shielding layer at the bottom of each phase of valve tower; for the statistics of the water leakage events of domestic converter substations in recent 5 years, the alarm success rate of a water leakage monitoring device is only less than 40%, and for the reason, a unit adopts water leakage monitoring color-changing test paper for monitoring the water leakage monitoring color-changing test paper at the bottom of a converter valve in a shielding manner; however, the water leakage occurrence time is random, if the water leakage occurrence time is later than the patrol time of the operation and maintenance personnel, the cooling water pipe is always in a water leakage state within 24 hours and is not known, and unless the leakage amount is large, the monitoring device can give an alarm correctly, the direct current transmission system can be forced to stop operation or the valve tower can be burnt out.
Bottom shielding water leakage monitoring devices, this kind of inspection mode have the drawback, and bottom shielding is about 10m and supervises, and single-phase valve tower water leakage volume needs continuous seepage 20L when the shielding water leakage monitoring devices perception of going to the bottom under the ideal state, and this kind of mode can't play effective monitoring to cooling system water leakage.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an intelligent method for monitoring water leakage of a converter valve cooling system, which is characterized by comprising the following steps: data acquisition → optical fiber abnormity alarm device → valve control device → control valve;
data acquisition: the data acquisition is that when water drops leaking from the cold water pipelines (4) through the flange (5) pass through the end gap (2) of the two optical fibers (3), the light path transmission is changed, and the optical fiber abnormity alarm device is triggered;
optical fiber abnormity alarm device: the optical fiber abnormity alarm device receives the water leakage information and continuously transmits the data to the valve control device;
a valve control device: the valve control device carries out logic analysis and respectively sends out alarm and trip signals according to the alarm frequency and the alarm time;
a control valve: the control valve is switched off by receiving the tripping signal.
The utility model provides a converter valve cooling system intelligent device that leaks monitoring, its structure is: the cold water pipelines (4) are communicated with each other through the flange (5), the two sides of the flange (5) are provided with the fixed buckles (1), the fixed buckles (1) are sleeved on the cold water pipelines (4) and fix the two optical fibers (3) at the bottom of the cold water pipelines (4), the end gap (2) of the two optical fibers (3) is 0.8-1.2mm, the fixing buckle (1) is composed of a cold water pipeline fixing ring (6) and an optical fiber fixing ring (8), a water leakage drainage channel (7) is arranged between the cold water pipeline fixing ring (6) and the optical fiber fixing ring (8), the diameter of the inner ring of the cold water pipeline fixing ring (6) is less than or equal to the outer diameter of a cold water pipeline (4), the diameter of the inner ring of the optical fiber fixing ring (8) is less than or equal to the outer diameter of an optical fiber (3), the optical fiber fixing rings (8) are two, and the distance between the two optical fiber fixing rings (8) is 0.8-1.5 mm.
The flange plate (5) is connected with the flange plate (5) through bolts and nuts.
The cold water pipeline (4), the flange plate (5) and the fixing buckle (1) are all made of PVC materials.
The principle of the invention is as follows: the optical fiber (3) is vertically fixed at the joint of the cold water pipeline (4), when water leaks through an optical fiber monitoring gap at the joint of a water pipe in a valve tower, the device sends out a water seepage alarm, the optical path is configured to be in a parallel relation between every two joint optical fibers, each alarm has a corresponding address, the optical fiber abnormity alarm device MSC sends a message to the valve control system, the valve control system carries out logic analysis on the collected digital quantity, and alarm and tripping signals are respectively sent out according to alarm times and alarm time delay, so that the safe and stable operation of a power grid and equipment is guaranteed to the maximum extent, and the concept of ubiquitous power internet of things is rapidly promoted.
The invention has the beneficial effects that: (1) the accuracy is high: the optical fiber monitoring is sensitive and accurate, an alarm is given immediately when water leaks from the water pipe, and a system sends a trip signal when the water dropping speed is too high, so that the equipment damage and the power grid abnormity are reduced to the maximum extent;
(2) and (3) operation and maintenance workload is reduced: after the invention is applied, the internal valve cooling system can directly reduce the operation and maintenance workload, and operators do not need to perform key inspection on the joint of the cold water pipe of the converter valve every day;
(3) low cost and high economic benefit: the optical fiber loop is simple to install and low in cost, and the economic benefit is directly and effectively improved;
(4) propulsion power is ubiquitous in the internet of things: contributes to the construction of ubiquitous power Internet of things.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic view of a fixing clip structure according to the present invention;
FIG. 3 is a side view of the retaining clip of the present invention;
FIG. 4 is an overall view of the valve tower of the present invention;
FIG. 5 is a block diagram of the logic of the present invention.
Wherein: 1. the device comprises a fixing buckle, 2, an end gap, 3, an optical fiber, 4, a cold water pipeline, 5, a flange plate, 6, a cold water pipeline fixing ring, 7, a water leakage drainage channel, 8 and an optical fiber fixing ring.
Fifth, detailed description of the invention
Embodiment 1, an intelligent method for monitoring water leakage of a converter valve cooling system is characterized in that: data acquisition → optical fiber abnormity alarm device → valve control device → control valve;
data acquisition: the data acquisition is that when water drops leaking from the cold water pipelines (4) through the flange (5) pass through the end gap (2) of the two optical fibers (3), the light path transmission is changed, and the optical fiber abnormity alarm device is triggered;
optical fiber abnormity alarm device: the optical fiber abnormity alarm device receives the water leakage information and continuously transmits the data to the valve control device;
a valve control device: the valve control device carries out logic analysis and respectively sends out alarm and trip signals according to the alarm frequency and the alarm time;
a control valve: the control valve is switched off by receiving the tripping signal.
The utility model provides a converter valve cooling system intelligent device that leaks monitoring, its structure is: the structure is as follows: the cold water pipelines (4) are communicated with each other through the flange (5), the two sides of the flange (5) are provided with the fixed buckles (1), the fixed buckles (1) are sleeved on the cold water pipelines (4) and fix the two optical fibers (3) at the bottom of the cold water pipelines (4), the end gap (2) of the two optical fibers (3) is 0.8mm, the fixing buckle (1) is composed of a cold water pipeline fixing ring (6) and an optical fiber fixing ring (8), a water leakage drainage channel (7) is arranged between the cold water pipeline fixing ring (6) and the optical fiber fixing ring (8), the diameter of the inner ring of the cold water pipeline fixing ring (6) is less than or equal to the outer diameter of a cold water pipeline (4), the diameter of the inner ring of the optical fiber fixing ring (8) is less than or equal to the outer diameter of an optical fiber (3), the optical fiber fixing rings (8) are two, and the distance between the two optical fiber fixing rings (8) is 0.8 mm.
The flange plate (5) is connected with the flange plate (5) through bolts and nuts.
The cold water pipeline (4), the flange plate (5) and the fixing buckle (1) are all made of PVC materials.
data acquisition: the data acquisition is that when water drops leaking from the cold water pipelines (4) through the flange (5) pass through the end gap (2) of the two optical fibers (3), the light path transmission is changed, and the optical fiber abnormity alarm device is triggered;
optical fiber abnormity alarm device: the optical fiber abnormity alarm device receives the water leakage information and continuously transmits the data to the valve control device;
a valve control device: the valve control device carries out logic analysis and respectively sends out alarm and trip signals according to the alarm frequency and the alarm time;
a control valve: the control valve is switched off by receiving the tripping signal.
The utility model provides a converter valve cooling system intelligent device that leaks monitoring, its structure is: the structure is as follows: the cold water pipelines (4) are communicated with each other through the flange (5), the two sides of the flange (5) are provided with the fixed buckles (1), the fixed buckles (1) are sleeved on the cold water pipelines (4) and fix the two optical fibers (3) at the bottom of the cold water pipelines (4), the end gap (2) of the two optical fibers (3) is 1.2mm, the fixing buckle (1) is composed of a cold water pipeline fixing ring (6) and an optical fiber fixing ring (8), a water leakage drainage channel (7) is arranged between the cold water pipeline fixing ring (6) and the optical fiber fixing ring (8), the diameter of the inner ring of the cold water pipeline fixing ring (6) is less than or equal to the outer diameter of a cold water pipeline (4), the diameter of the inner ring of the optical fiber fixing ring (8) is less than or equal to the outer diameter of an optical fiber (3), the optical fiber fixing rings (8) are two, and the distance between the two optical fiber fixing rings (8) is 1.5 mm.
The flange plate (5) is connected with the flange plate (5) through bolts and nuts.
The cold water pipeline (4), the flange plate (5) and the fixing buckle (1) are all made of PVC materials.
Claims (1)
1. An intelligent method for monitoring water leakage of a converter valve cooling system is characterized by comprising the following steps:
data acquisition → optical fiber abnormity alarm device → valve control device → control valve;
data acquisition: the data acquisition is that when water drops leaking from the cold water pipelines (4) through the flange (5) pass through the end gap (2) of the two optical fibers (3), the light path transmission is changed, and the optical fiber abnormity alarm device is triggered;
optical fiber abnormity alarm device: the optical fiber abnormity alarm device receives the water leakage information and continuously transmits the data to the valve control device;
a valve control device: the valve control device carries out logic analysis and respectively sends out alarm and trip signals according to the alarm frequency and the alarm time;
a control valve: the control valve is switched off by receiving the tripping signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136003.7A CN110805835A (en) | 2019-11-19 | 2019-11-19 | Intelligent water leakage monitoring method for converter valve cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136003.7A CN110805835A (en) | 2019-11-19 | 2019-11-19 | Intelligent water leakage monitoring method for converter valve cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN110805835A true CN110805835A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911136003.7A Pending CN110805835A (en) | 2019-11-19 | 2019-11-19 | Intelligent water leakage monitoring method for converter valve cooling system |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920830A (en) * | 1982-07-27 | 1984-02-02 | Sumitomo Electric Ind Ltd | Method for detecting leakage of oily liquid |
| CN101354110A (en) * | 2007-07-23 | 2009-01-28 | 上海市莘格高级中学 | Intelligent coal gas leakage alarming and cutting system |
| CN103033323A (en) * | 2012-12-11 | 2013-04-10 | 国网智能电网研究院 | Novel optical fiber type leakage detector used for direct-current converter valve |
| CN103282757A (en) * | 2010-12-30 | 2013-09-04 | 伊顿公司 | Leak detection system |
| CN105221402A (en) * | 2015-11-06 | 2016-01-06 | 国家电网公司 | High voltage direct current converter valve constituent recycle pump leakage detection method and device |
| CN105466650A (en) * | 2014-09-28 | 2016-04-06 | 国家电网公司 | System for monitoring DC converter valve water leakage |
| CN108801561A (en) * | 2018-07-05 | 2018-11-13 | 武汉理工大学 | A kind of composite material sensor for pipeline Oil Leakage Detecting |
| CN209055475U (en) * | 2018-10-30 | 2019-07-02 | 南京信息工程大学 | One kind can illuminate water pipe leak detection Infrared Monitor System |
-
2019
- 2019-11-19 CN CN201911136003.7A patent/CN110805835A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920830A (en) * | 1982-07-27 | 1984-02-02 | Sumitomo Electric Ind Ltd | Method for detecting leakage of oily liquid |
| CN101354110A (en) * | 2007-07-23 | 2009-01-28 | 上海市莘格高级中学 | Intelligent coal gas leakage alarming and cutting system |
| CN103282757A (en) * | 2010-12-30 | 2013-09-04 | 伊顿公司 | Leak detection system |
| CN103033323A (en) * | 2012-12-11 | 2013-04-10 | 国网智能电网研究院 | Novel optical fiber type leakage detector used for direct-current converter valve |
| CN105466650A (en) * | 2014-09-28 | 2016-04-06 | 国家电网公司 | System for monitoring DC converter valve water leakage |
| CN105221402A (en) * | 2015-11-06 | 2016-01-06 | 国家电网公司 | High voltage direct current converter valve constituent recycle pump leakage detection method and device |
| CN108801561A (en) * | 2018-07-05 | 2018-11-13 | 武汉理工大学 | A kind of composite material sensor for pipeline Oil Leakage Detecting |
| CN209055475U (en) * | 2018-10-30 | 2019-07-02 | 南京信息工程大学 | One kind can illuminate water pipe leak detection Infrared Monitor System |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200218 |
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| RJ01 | Rejection of invention patent application after publication |