CN203083727U - Wall temperature detection device for inner leakage of steam drain pipeline - Google Patents
Wall temperature detection device for inner leakage of steam drain pipeline Download PDFInfo
- Publication number
- CN203083727U CN203083727U CN201220712605.XU CN201220712605U CN203083727U CN 203083727 U CN203083727 U CN 203083727U CN 201220712605 U CN201220712605 U CN 201220712605U CN 203083727 U CN203083727 U CN 203083727U
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- China
- Prior art keywords
- wall temperature
- steam
- steam drain
- temperature measuring
- inner leakage
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- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000000605 extraction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Abstract
The utility model provides a wall temperature detection for inner leakage of steam drain pipeline. Each steam drain pipe which is connected with high-pressure steam discharging pipeline or steam extracting pipeline is provided with a temperature measuring device which is connected with an intelligent front-end device. The intelligent front-end device is connected with a control system. The control system is connected with a display device and an alarm device. The wall temperature detection device according to the technical solution of the utility model is provided with wall temperature measuring points of thermal resistance or thermocouple, and directly determines whether inner leakage exists at the pipeline valve and inner leakage degree according to the temperature number of the wall temperature measuring points. The valve with inner leakage can be replaced in time, thereby reducing heat consumption of the machine, and furthermore improving economical performance and safety.
Description
Technical field
The utility model relates to the wall temperature pick-up unit that leaks in a kind of steam drain water piping, is used to judge heat power plant boiler, steam turbine steam drain water piping valves leakage situation.Reduce hear rate to reduce the working medium loss, reach purpose of energy saving.
Background technology
Heat power plant boiler, steam turbine steam draining system valves leakage detects, the most manual types that adopt of domestic power plant, the personnel that need patrol and examine regularly adopt hand-held infrared thermometer to detect one by one, this detection mode, owing to be subjected to pipe insulation to influence restriction with the valve arrangement position, testing process can cause that the accuracy of artificial judgment reduces, cause leaking in the part detection careless omission situation of valve, form a large amount of high-quality steam in service bleed drain tank or condenser, this part steam does not do work, not only cause a large amount of thermal loss to unit, and the thermal load and the cold source energy of condenser have been increased, influenced the economy of unit, this means can not be accomplished accurately simultaneously, real-time online detection.
Summary of the invention
The purpose of this utility model provides the wall temperature pick-up unit that leaks in a kind of steam drain water piping, is used to judge heat power plant boiler, steam turbine steam drain water piping valves leakage situation, reduces hear rate to reduce the working medium loss, reaches purpose of energy saving.
For achieving the above object, the utility model is by the following technical solutions:
The wall temperature pick-up unit that leaks in a kind of steam drain water piping, with on each steam drain water piping that high pressure jet chimney or extraction line are connected temperature measuring equipment is set, this temperature measuring equipment is connected with intelligent front end, the intelligent front end connection control system, control system connects display device and warning device.
Described temperature measuring equipment is positioned at the rear end of Automatic steam trap Trap door.
Described temperature measuring equipment is thermal resistance or thermopair.
Described control system is the DCS system.
Adopt the utility model of technique scheme, the wall temperature measuring point of thermal resistance or thermopair is set on the pipeline behind the door at Automatic steam trap Trap, judge directly according to the Temperature numerical of wall temperature measuring point whether pipeline valve exists the degree of interior leakage and interior leakage, leak valve in time changing, reduce the unit hear rate, the economy and the security that have improved unit.
Description of drawings
Fig. 1 is cold section blind controller system figure of steam turbine reheated steam.
Fig. 2 is one section and draws gas and highly add hydrophobic venting blind controller system figure No. 1.
Embodiment
As shown in Figure 1 and Figure 2, the wall temperature pick-up unit that leaks in a kind of steam drain water piping, with on each steam drain water piping 3 that high pressure jet chimney 1 or extraction line 2 are connected temperature measuring equipment 4 is set, this temperature measuring equipment 4 is connected with intelligent front end 6, intelligent front end 6 connects the DCS control system, and the DCS control system connects display device and warning device.
Above-mentioned temperature measuring equipment 4 is thermal resistance or thermopair, is positioned at the rear end of Automatic steam trap Trap door 5.
The utility model is in order to judge steam drain water piping valves leakage situation, behind totally 45 points, the boiler side Automatic steam trap Trap door 5 temperature measuring equipment 4 workers 27 points is set in that temperature measuring equipment 4 is set behind the steam turbine side Automatic steam trap Trap door 5 respectively.4 pairs of steam turbines of above-mentioned temperature measuring equipment, boiler drain water piping all cover.The steam turbine side is provided with 9 intelligent front ends, adopts compensating wire to insert the warm galvanic couple measuring point of steam turbine sidewall, and boiler side is provided with 4 intelligent front ends, adopts compensating wire to insert the warm galvanic couple measuring point of boiler side walls.Intelligent front end inserts unit DCS switch rack by communication modes, and the data of wall temperature measurement are uploaded on the DCS operator station LCD display picture by the DCS controller.The operations staff by DCS operator station LCD display, carries out real time monitoring to the wall temperature measuring point at central station of floating dock.Whether accurately judge steam drain water piping valve according to wall temperature situation of change and numerical value leaks and interior leakage degree in existing.Also can different alarm set points be set by temperature signal being got threshold value, the valve of reminding the operations staff internally to leak is in time safeguarded and is changed.According to the wall temperature measurement behind the hydrophobic valve, judge that the criterion of valves leakage and interior leakage degree is as follows:
A) medium parameter 〉=400 ℃, under the hydrophobic door closure state: wall temperature behind the drain valve 〉=200 ℃, steam drain pipe exist leaks in serious; Wall temperature behind the drain valve 〉=120 ℃, steam drain pipe exist leaks in general; Wall temperature behind the drain valve 〉=80 ℃, there is seepage in the steam drain pipe;
B) medium parameter is 300 ~ 400 ℃, and under the hydrophobic door closure state: wall temperature behind the drain valve 〉=150 ℃, steam drain pipe exist leaks in serious; Wall temperature behind the drain valve 〉=100 ℃, steam drain pipe exist leaks in general; Wall temperature behind the drain valve 〉=60 ℃, there is seepage in the steam drain pipe;
C) medium parameter＜300 ℃, under the hydrophobic door closure state: wall temperature behind the drain valve 〉=120 ℃, steam drain pipe exist leaks in serious; Wall temperature behind the drain valve 〉=80 ℃, steam drain pipe exist leaks in general; Wall temperature behind the drain valve 〉=50 ℃, there is seepage in the steam drain pipe.
Claims (4)
1. the wall temperature pick-up unit that leaks in the steam drain water piping, it is characterized in that: on each the steam drain water piping (3) that is connected with high pressure jet chimney (1) or extraction line (2) temperature measuring equipment (4) is set, this temperature measuring equipment (4) is connected with intelligent front end (6), intelligent front end (6) connection control system, control system connects display device and warning device.
2. the wall temperature pick-up unit that leaks in the steam drain water piping according to claim 1, it is characterized in that: described temperature measuring equipment (4) is positioned at the rear end of Automatic steam trap Trap door (5).
3. the wall temperature pick-up unit that leaks in the steam drain water piping according to claim 1 and 2, it is characterized in that: described temperature measuring equipment (4) is thermal resistance or thermopair.
4. the wall temperature pick-up unit that leaks in the steam drain water piping according to claim 1, it is characterized in that: described control system is the DCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220712605.XU CN203083727U (en) | 2012-12-21 | 2012-12-21 | Wall temperature detection device for inner leakage of steam drain pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220712605.XU CN203083727U (en) | 2012-12-21 | 2012-12-21 | Wall temperature detection device for inner leakage of steam drain pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203083727U true CN203083727U (en) | 2013-07-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220712605.XU Expired - Fee Related CN203083727U (en) | 2012-12-21 | 2012-12-21 | Wall temperature detection device for inner leakage of steam drain pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203083727U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913296A (en) * | 2015-05-14 | 2015-09-16 | 广东红海湾发电有限公司 | High-low pressure heater emergency drain control method |
| CN107060913A (en) * | 2017-04-28 | 2017-08-18 | 安徽新宁能源科技有限公司 | A kind of unattended automatic hydrophobic system |
| CN109611814A (en) * | 2018-12-29 | 2019-04-12 | 湖南鸿远高压阀门有限公司 | The measurement method and measuring system of pipe valve arrangement draining system heat-energy losses |
| CN111480066A (en) * | 2017-12-18 | 2020-07-31 | 拓自达电线株式会社 | Liquid detection sensor and liquid detection device |
| CN114110412A (en) * | 2021-11-26 | 2022-03-01 | 华能上海燃机发电有限责任公司 | Internal leakage monitoring system for steam turbine power plant drain valve |
-
2012
- 2012-12-21 CN CN201220712605.XU patent/CN203083727U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913296A (en) * | 2015-05-14 | 2015-09-16 | 广东红海湾发电有限公司 | High-low pressure heater emergency drain control method |
| CN107060913A (en) * | 2017-04-28 | 2017-08-18 | 安徽新宁能源科技有限公司 | A kind of unattended automatic hydrophobic system |
| CN111480066A (en) * | 2017-12-18 | 2020-07-31 | 拓自达电线株式会社 | Liquid detection sensor and liquid detection device |
| CN111480066B (en) * | 2017-12-18 | 2023-11-07 | 拓自达电线株式会社 | Liquid detection sensor and liquid detection device |
| CN109611814A (en) * | 2018-12-29 | 2019-04-12 | 湖南鸿远高压阀门有限公司 | The measurement method and measuring system of pipe valve arrangement draining system heat-energy losses |
| CN109611814B (en) * | 2018-12-29 | 2019-12-20 | 湖南鸿远高压阀门有限公司 | Measuring method and measuring system for heat energy loss of pipe valve arrangement drainage system |
| CN114110412A (en) * | 2021-11-26 | 2022-03-01 | 华能上海燃机发电有限责任公司 | Internal leakage monitoring system for steam turbine power plant drain valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20131221 |