CN203811327U - Inner-leakage on-line monitoring device of valve - Google Patents
Inner-leakage on-line monitoring device of valve Download PDFInfo
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- CN203811327U CN203811327U CN201420040785.0U CN201420040785U CN203811327U CN 203811327 U CN203811327 U CN 203811327U CN 201420040785 U CN201420040785 U CN 201420040785U CN 203811327 U CN203811327 U CN 203811327U
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Abstract
The utility model relates to an inner-leakage on-line monitoring device of a valve which is installed in an operation pipe. The on-line monitoring device includes an upstream temperature sensor, a downstream temperature sensor and a controller. The upstream temperature sensor and the downstream temperature sensor are respectively installed on an inlet end of a valve flow path and an outlet end of the valve flow path, are electrically connected respectively to the controller through an upstream temperature signal leading wire and a downstream temperature signal leading wire, and are respectively used for acquiring a valve inlet end temperature and a valve outlet end temperature. The controller is used for receiving signals outputted from the upstream temperature sensor and the downstream temperature sensor and carries an analysis process according to real-time temperature information for determining whether an inner leakage exists in the valve or not. With the monitoring device, an inner-leakage valve can be effectively monitored and a trend of the inner leakage can be detected. The valve having the trend of the inner leakage can be processed in advance so that problems that the valve is serious in inner leakage and cannot be repaired can be avoid, so that a piece of equipment is ensured to be operated safely and economically.
Description
Technical field
The utility model relates to online discharge monitoring field, relates in particular to a kind of valves leakage on-Line Monitor Device.
Background technology
Valve is fluid control component main in the boiler circuit of fuel-burning power plant, and it is used for regulating flow or the pressure of medium.Its function comprise cut off or connect medium, control flow, change flow, change MEDIA FLOW to, prevent medium back flow, controlled pressure or relieving pressure etc.In industrial processes, because the factors such as the suffered tight power of valve sealing face is inadequate, valve seat lower gasket decrement is excessive, valve seat distortion, mounting process often cause valves leakage.Commercial unit valves leakage quantity new doors many and that often just changed use and have just leaked and caused maintainer to be too tired to deal with several times.Valves leakage has had a strong impact on security of operation and the equipment economy of equipment.Some valve is in high temperature and high pressure condition, once occur leaking, spool valve seat can be blown groove makes to sew more and more serious, therefore must check erroneous ideas at the outset, when valve at the beginning in leakage just administer.And traditional method is all can find in the situation that valves leakage is serious, can not tackle the problem at its root, more can not on-line monitoring valves leakage situation.
Summary of the invention
Thereby being to provide, the purpose of this utility model a kind ofly can find in time the on-Line Monitor Device that valves leakage trend is taken precautions against in advance.
For achieving the above object, the technical solution adopted in the utility model is: a kind of valves leakage on-Line Monitor Device, described valve installation is in in-service pipeline, this on-Line Monitor Device comprises upstream temperature sensor, downstream temperature sensor and controller, described upstream temperature sensor is installed on described valve stream inlet end, described downstream temperature sensor is installed on described valve flowing path outlet end, described upstream temperature sensor is electrically connected by upstream temperature signal lead and described controller, described downstream temperature sensor is electrically connected by downstream temperature signal lead and described control, the corresponding temperature that gathers valve inlet end and endpiece of described upstream temperature sensor and downstream temperature sensor, thereby described controller is for receiving the signal of upstream temperature sensor and downstream temperature sensor output and analyzing and judge whether valve has interior leakage according to real time temperature information.
Further, described controller is programmable logic controller (PLC) PLC, and it comprises MBM and judge module.
Further, described controller comprises comparer, described comparer is used in the time of valve wide open or full cut-off, thereby judges interior leakage degree according to upstream and downstream temperature value corresponding to working medium physical parameter computational analysis in valve upstream and downstream pipeline geometric parameter, pipeline by the changing value that compares upstream and downstream temperature.
Because technique scheme is used, the utility model compared with prior art has following advantages: the utility model is installed the temperature of downstream temperature sensor with Real-time Collection porch and exit by the inlet end at valve and endpiece, and by controller to gather data according to pipeline geometric parameter, working medium physical parameter incorporation engineering fluid mechanics, thermal conduction study is analyzed, thereby effectively monitor out the valve leaking in existence, and can find valves leakage trend, with advanced processing, the problem of avoiding valves leakage seriously cannot repair, and ensure device security economical operation.
Brief description of the drawings
Accompanying drawing 1 is valves leakage on-Line Monitor Device schematic diagram of the present utility model;
Wherein, 10, valve; 20, in-service pipeline; 1, upstream temperature sensor; 2, downstream temperature sensor; 3, upstream temperature lead-in wire; 4, downstream temperature lead-in wire; 5, controller.
Embodiment
In order to make those skilled in the art understand better content of the present utility model, below in conjunction with drawings and embodiments, the utility model is made to a nearly step and describe in detail.
As shown in Figure 1, valve 10 to be monitored is arranged in in-service pipeline 20, the present embodiment valves leakage on-Line Monitor Device comprises upstream temperature sensor 1, downstream temperature sensor 2, controller 3, wherein, upstream temperature sensor 1 is installed on the inlet end of valve 10 streams, downstream temperature sensing 2 is installed on the endpiece of valve stream, between upstream temperature sensor 2 and controller 3, be connected by upstream temperature signal lead 3, between downstream temperature sensing 2 and controller 3, be connected by downstream temperature signal lead 2.
In the present embodiment, controller 3 is programmable logic controller (PLC) PLC, its data according to upstream and downstream temperature sensor 1,2 Real-time Collections are stored, and each temperature sensor are set and valve 10 distance between center line L1, L2 modeling judge valves leakage degree according to pipeline geometric parameter, hot working fluid force parameter.Wherein, the installation site of upstream and downstream temperature sensor 1,2 is that sensor and valve distance between center line L1, L2 calculate according to working medium physical parameter in valve upstream and downstream pipeline geometric parameter, pipeline.
Further, controller 3 also comprises a comparer, this comparer is in the time of valve wide open and full cut-off, according to upstream and downstream temperature value corresponding to working medium physical parameter computational analysis in valve upstream and downstream pipeline geometric parameter, pipeline, this comparer judges valves leakage degree by the changing value that compares upstream and downstream temperature.
The utility model on-Line Monitor Device, according to pipeline geometric parameter, working medium physical parameter incorporation engineering fluid mechanics, thermal conduction study, calculate upstream and downstream temperature sensor installation site, pass through on-line data acquisition, temperature is stored in computing machine constantly, analyze, according to historical trend, thereby judge the whether interior leakage of valve.Whole apparatus structure is simple, convenient and practical, can find in time valves leakage trend, the problem that advanced processing avoids valves leakage seriously cannot repair, support equipment safety and economic operation.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (2)
1. a valves leakage on-Line Monitor Device, described valve installation is in in-service pipeline, it is characterized in that: this on-Line Monitor Device comprises upstream temperature sensor, downstream temperature sensor and PLC controller, described upstream temperature sensor is installed on described valve stream inlet end, described downstream temperature sensor is installed on described valve flowing path outlet end, described upstream temperature sensor is electrically connected by upstream temperature signal lead and described PLC, and described downstream temperature sensor is electrically connected with described PLC by downstream temperature signal lead.
2. valves leakage on-Line Monitor Device according to claim 1, it is characterized in that: it also comprises comparer, described comparer is used in the time of valve wide open or full cut-off, thereby judges interior leakage degree according to upstream and downstream temperature value corresponding to working medium physical parameter computational analysis in valve upstream and downstream pipeline geometric parameter, pipeline by the changing value that compares upstream and downstream temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040785.0U CN203811327U (en) | 2014-01-23 | 2014-01-23 | Inner-leakage on-line monitoring device of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040785.0U CN203811327U (en) | 2014-01-23 | 2014-01-23 | Inner-leakage on-line monitoring device of valve |
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| Publication Number | Publication Date |
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| CN203811327U true CN203811327U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420040785.0U Expired - Fee Related CN203811327U (en) | 2014-01-23 | 2014-01-23 | Inner-leakage on-line monitoring device of valve |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004490A (en) * | 2015-05-26 | 2015-10-28 | 龙岩烟草工业有限责任公司 | Method and system for detecting leakage of drain valve |
| CN107063581A (en) * | 2017-06-01 | 2017-08-18 | 北京京能未来燃气热电有限公司 | Valves leakage detection means and detection method |
| CN107420628A (en) * | 2017-06-21 | 2017-12-01 | 中国华能集团清洁能源技术研究院有限公司 | Leakage monitoring device and monitoring method in a kind of steam valve |
| CN112098001A (en) * | 2020-09-25 | 2020-12-18 | 三门核电有限公司 | Valve internal leakage detection method and device |
| CN112836437A (en) * | 2021-03-05 | 2021-05-25 | 国家能源集团谏壁发电厂 | Thermal power generating unit valve internal leakage detection method |
| CN113409969A (en) * | 2021-02-05 | 2021-09-17 | 海南核电有限公司 | Nuclear power plant valve internal leakage fault diagnosis method |
| CN113551840A (en) * | 2021-07-22 | 2021-10-26 | 中国核动力研究设计院 | Valve internal leakage monitoring system and method based on optical fiber temperature measurement technology |
| CN114526865A (en) * | 2022-01-27 | 2022-05-24 | 核电运行研究(上海)有限公司 | Valve internal leakage monitoring and diagnosing method |
| CN115165219A (en) * | 2022-06-22 | 2022-10-11 | 华能(大连)热电有限责任公司 | Device and method for rapidly judging internal leakage of pipeline valve by using infrared sensor |
-
2014
- 2014-01-23 CN CN201420040785.0U patent/CN203811327U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004490A (en) * | 2015-05-26 | 2015-10-28 | 龙岩烟草工业有限责任公司 | Method and system for detecting leakage of drain valve |
| CN107063581A (en) * | 2017-06-01 | 2017-08-18 | 北京京能未来燃气热电有限公司 | Valves leakage detection means and detection method |
| CN107420628A (en) * | 2017-06-21 | 2017-12-01 | 中国华能集团清洁能源技术研究院有限公司 | Leakage monitoring device and monitoring method in a kind of steam valve |
| CN112098001A (en) * | 2020-09-25 | 2020-12-18 | 三门核电有限公司 | Valve internal leakage detection method and device |
| CN113409969A (en) * | 2021-02-05 | 2021-09-17 | 海南核电有限公司 | Nuclear power plant valve internal leakage fault diagnosis method |
| CN112836437A (en) * | 2021-03-05 | 2021-05-25 | 国家能源集团谏壁发电厂 | Thermal power generating unit valve internal leakage detection method |
| CN113551840A (en) * | 2021-07-22 | 2021-10-26 | 中国核动力研究设计院 | Valve internal leakage monitoring system and method based on optical fiber temperature measurement technology |
| CN114526865A (en) * | 2022-01-27 | 2022-05-24 | 核电运行研究(上海)有限公司 | Valve internal leakage monitoring and diagnosing method |
| CN115165219A (en) * | 2022-06-22 | 2022-10-11 | 华能(大连)热电有限责任公司 | Device and method for rapidly judging internal leakage of pipeline valve by using infrared sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20200123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |