CN201212827Y - Drainage leakage amount measuring device for electricity plant steam tube - Google Patents
Drainage leakage amount measuring device for electricity plant steam tube Download PDFInfo
- Publication number
- CN201212827Y CN201212827Y CNU2008200778018U CN200820077801U CN201212827Y CN 201212827 Y CN201212827 Y CN 201212827Y CN U2008200778018 U CNU2008200778018 U CN U2008200778018U CN 200820077801 U CN200820077801 U CN 200820077801U CN 201212827 Y CN201212827 Y CN 201212827Y
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- CN
- China
- Prior art keywords
- temperature sensor
- pipeline
- main steam
- power plant
- steam header
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005611 electricity Effects 0.000 title abstract 5
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000002209 hydrophobic effect Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004069 plant analysis Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Abstract
The utility model relates to a drainage leakage-quantity measuring device of a steam pipeline in an electricity generating station. The drainage leakage quantity measuring device comprises a pressure sensor and a temperature sensor which are arranged on a steam main pipeline, a first pipeline surface temperature sensor and a first insulation layer external surface temperature senor which are arranged at the measuring position A on a drainage pipeline, a second pipeline surface temperature sensor and a second insulation layer external temperature sensor which are arranged at the measuring position B on the drainage pipeline, a data collector and a PC computer; the output ends of the pressure senor and all temperature sensors are respectively connected with the corresponding input end of the data collector, and the output end of the data collector is connected with the input end of the PC computer. The utility model has the advantages that the measurement problem of the drainage pipeline leakage flow rate on the overheating steam pipeline in the electricity generating station during the normal operation is solved and quantitative data for the operation and the overhauling of the electricity generating station and basis for the energy conservation and consumption reduction of the electricity generating station are provided.
Description
Technical field
The utility model relates to the hydrophobic leakage rate measurement mechanism of a kind of power plant jet chimney.
Background technology
Along with the electric power unit develops to the high capacity high parameter, the jet chimney of power plant leaks increasing to the economic influence of power plant.With a certain 600MW unit main steam pipe is example, is 2t/h as the hydrophobic leakage flow of main steam line, then will influence the about 0.3g/KW.h of power plant's coal consumption, will consume the about 1100t of mark coal every year more.But the hydrophobic leakage of power plant's jet chimney at present generally can only be qualitative, and can't propose quantitative quantity.This mainly is to have very big difficulty because the leakage flow of power plant's drain water piping is measured, and on the one hand, because the hydrophobic pipeline caliber is less, measurement mechanisms such as throttling orifice plate can't be installed.On the other hand, because the measuring media temperature is higher, and can't adopt flow measurement mode such as ultrasound wave.
Summary of the invention
Technical problem to be solved in the utility model provides the hydrophobic leakage rate measurement mechanism of a kind of power plant jet chimney.
The utility model solves technical scheme that its technical matters adopts:
The hydrophobic leakage rate measurement mechanism of power plant's jet chimney, it is characterized in that it by be installed in pressure transducer and temperature sensor on the main steam header road, be installed in the first pipe surface temperature sensor and the first heat-insulation layer hull-skin temperature sensor at A place, measuring position on the drain water piping in main steam header road, the second pipe surface temperature sensor and the second heat-insulation layer hull-skin temperature sensor, data acquisition unit, the PC that is installed in B place, measuring position on the drain water piping in main steam header road formed; The output terminal of pressure transducer and above-mentioned each temperature sensor connects the respective input of data acquisition unit respectively, the input end of the output termination PC of data acquisition unit.
The model of described data acquisition unit is OM-DAQPRO-6300.
In the utility model, the distance L between the measuring position A on the drain water piping, B two places is 5 ± 1m.
Described pressure transducer is connected with pressure transmission sleeve pipe on being installed in the main steam header road by connector; Described temperature sensor directly inserts in the temperature survey sleeve pipe that is installed on the main steam header road.
The beneficial effects of the utility model are the problems of measurement that solved drain water piping leakage flow on the normal power plant in service superheat steam pipeline, provide quantitative data for power plant moves and overhauls, and the energy-saving and cost-reducing foundation that provides of power plant is provided; Can carry out periodic monitoring to the leakage situation of drain water piping in power plant's jet chimney; The needs of economy of power plant analysis have been satisfied.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the installation site synoptic diagram of pressure transducer of the present utility model and each temperature sensor.
Embodiment
By the embodiment shown in Fig. 1,2 as can be known, the hydrophobic leakage rate measurement mechanism of power plant's jet chimney, it is characterized in that it by be installed in pressure transducer 2 and temperature sensor 3 on the main steam header road 1, be installed in the first pipe surface temperature sensor 5 and the first heat-insulation layer hull-skin temperature sensor 6 at A place, measuring position on the drain water piping 4 in main steam header road, the second pipe surface temperature sensor 7 and the second heat-insulation layer hull-skin temperature sensor 8, data acquisition unit, the PC that is installed in B place, measuring position on the drain water piping 4 in main steam header road formed; The output terminal of pressure transducer 2 and above-mentioned each temperature sensor connects the respective input of data acquisition unit respectively, the input end of the output termination PC of data acquisition unit.
The model of described data acquisition unit is OM-DAQPRO-6300.
In the present embodiment, the distance L between the measuring position A on the drain water piping 4, B two places is 5 ± 1m (see figure 2).
Described pressure transducer 2 is connected with pressure transmission sleeve pipe on being installed in main steam header road 1 by connector; Described temperature sensor 3 directly inserts in the temperature survey sleeve pipe that is installed on the main steam header road 1.
Principle of work of the present utility model is as follows:
Data acquisition unit is that digital signal is input in the PC with the pressure transducer that collects and the analog signal conversion of each temperature sensor, carries out the calculating of leakage flow according to heat balance principle, and its computing method are as follows:
One, the drain water piping surface is to the thermal discharge Q of heat-insulation layer
1Be calculated as follows:
Wherein, Q
1Be the thermal discharge of drain water piping surface to heat-insulation layer, the W of unit;
k
1Be the heat-insulation layer coefficient of heat conductivity, the W/ of unit (m.K);
T
mBe drain water piping average surface temperature, unit K;
T
m＝(T
am+T
bm)/2
T
AmBe the first pipe surface temperature sensor, the 5 measured temperature at measuring position A place, unit K;
T
BmBe the second pipe surface temperature sensor, the 7 measured temperature at measuring position B place, unit K;
T
sBe drain water piping heat-insulation layer appearance medial temperature, unit K;
T
s＝(T
as+T
bs)/2
T
AsBe the temperature that the first heat-insulation layer appearance temperature sensor 6 at measuring position A place is surveyed, unit K;
T
AsBe the temperature that the second heat-insulation layer appearance temperature sensor 8 at measuring position B place is surveyed, unit K;
D
mBe the drain water piping external diameter, the m of unit;
D
sBe drain water piping heat-insulation layer external diameter, the m of unit;
L is the distance between measuring position A, B two places, the m of unit.
Two, the heat reduction Q of interior media between two measuring positions of A, B on the drain water piping
2Be calculated as follows:
Q
2＝w
1×C
p×ΔT
Q wherein
2Be the heat reduction of interior media between two measuring positions of A, B on the drain water piping, the W of unit;
w
1Be leakage flow, units/s;
C
pBe the steam specific volume, the W/kg.K of unit;
Δ T is a drain water piping interior media temperature drop-out value, unit K;
In the actual measurement, Δ T value can be approximately the drop-out value of drain water piping surface temperature, promptly
ΔT＝T
am—T
bm。
Three, under the steady heat equilibrium state, Q
1=Q
2, can calculate the leakage flow in the drain pipe thus.Computing formula as shown in the formula:
During this device uses, when measuring the pressure of jet chimney, after pressure transducer installs, need the isolation valve of opening pressure pressure tube.After this device is finished using, at first behind the isolation valve of closing presure pressure tube, can dismantle pressure transducer during dismounting.
Claims (4)
1, the hydrophobic leakage rate measurement mechanism of power plant's jet chimney, it is characterized in that it by the drain water piping (4) that is installed in pressure transducer (2) and temperature sensor (3) on the main steam header road (1), is installed in the main steam header road go up the first pipe surface temperature sensor (5) and the first heat-insulation layer hull-skin temperature sensor (6) at A place, measuring position, the second pipe surface temperature sensor (7) and the second heat-insulation layer hull-skin temperature sensor (8), data acquisition unit, the PC that is installed in B place, measuring position on the drain water piping (4) in main steam header road formed; The output terminal of pressure transducer (2) and above-mentioned each temperature sensor connects the respective input of data acquisition unit respectively, the input end of the output termination PC of data acquisition unit.
2, the hydrophobic leakage rate measurement mechanism of power plant's jet chimney according to claim 1, the model that it is characterized in that described data acquisition unit is OM-DAQPRO-6300.
3, the hydrophobic leakage rate measurement mechanism of power plant's jet chimney according to claim 2 is characterized in that being positioned at the measuring position A on the drain water piping (4), the distance L between B two places is 5 ± 1m.
4, the hydrophobic leakage rate measurement mechanism of power plant's jet chimney according to claim 3 is characterized in that described pressure transducer (2) is connected with pressure transmission sleeve pipe on being installed in main steam header road (1) by connector; Described temperature sensor (3) directly inserts in the temperature survey sleeve pipe that is installed on the main steam header road (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200778018U CN201212827Y (en) | 2008-07-08 | 2008-07-08 | Drainage leakage amount measuring device for electricity plant steam tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200778018U CN201212827Y (en) | 2008-07-08 | 2008-07-08 | Drainage leakage amount measuring device for electricity plant steam tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212827Y true CN201212827Y (en) | 2009-03-25 |
Family
ID=40497003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200778018U Expired - Fee Related CN201212827Y (en) | 2008-07-08 | 2008-07-08 | Drainage leakage amount measuring device for electricity plant steam tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201212827Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135235A (en) * | 2010-01-27 | 2011-07-27 | 捷达世软件（深圳）有限公司 | System and method for monitoring air compression pipeline |
| CN102305107A (en) * | 2011-09-20 | 2012-01-04 | 河北省电力建设调整试验所 | Turboset heat rate online monitoring device and method based on cold side heat loss |
| CN103994332A (en) * | 2014-04-16 | 2014-08-20 | 大连科华热力管道有限公司 | Steam directly-buried pipe network with leakage warning device |
| CN105042337A (en) * | 2015-06-15 | 2015-11-11 | 中国石油天然气股份有限公司 | Calculation method for leakage amount of oil transmission pipeline |
| CN105465492A (en) * | 2015-12-25 | 2016-04-06 | 江苏洁润管业有限公司 | Metal pipeline with data transmission function |
| CN110159868A (en) * | 2019-05-27 | 2019-08-23 | 北京奥蓝仕技术有限公司 | Data processing method, device and the SMART SLEEVE of SMART SLEEVE |
| CN111059457A (en) * | 2019-12-10 | 2020-04-24 | 合肥泽众城市智能科技有限公司 | System and method for judging working state of steam heating pipe network infrastructure |
-
2008
- 2008-07-08 CN CNU2008200778018U patent/CN201212827Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135235A (en) * | 2010-01-27 | 2011-07-27 | 捷达世软件（深圳）有限公司 | System and method for monitoring air compression pipeline |
| CN102305107A (en) * | 2011-09-20 | 2012-01-04 | 河北省电力建设调整试验所 | Turboset heat rate online monitoring device and method based on cold side heat loss |
| CN102305107B (en) * | 2011-09-20 | 2015-03-11 | 河北省电力建设调整试验所 | Turboset heat rate online monitoring device and method based on cold side heat loss |
| CN103994332A (en) * | 2014-04-16 | 2014-08-20 | 大连科华热力管道有限公司 | Steam directly-buried pipe network with leakage warning device |
| CN103994332B (en) * | 2014-04-16 | 2017-02-01 | 大连科华热力管道有限公司 | Steam directly-buried pipe network with leakage warning device |
| CN105042337A (en) * | 2015-06-15 | 2015-11-11 | 中国石油天然气股份有限公司 | Calculation method for leakage amount of oil transmission pipeline |
| CN105042337B (en) * | 2015-06-15 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of Pipeline Leak amount computational methods |
| CN105465492A (en) * | 2015-12-25 | 2016-04-06 | 江苏洁润管业有限公司 | Metal pipeline with data transmission function |
| CN110159868A (en) * | 2019-05-27 | 2019-08-23 | 北京奥蓝仕技术有限公司 | Data processing method, device and the SMART SLEEVE of SMART SLEEVE |
| CN111059457A (en) * | 2019-12-10 | 2020-04-24 | 合肥泽众城市智能科技有限公司 | System and method for judging working state of steam heating pipe network infrastructure |
| CN111059457B (en) * | 2019-12-10 | 2022-09-30 | 合肥泽众城市智能科技有限公司 | System and method for judging working state of steam heating pipe network infrastructure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. HEBEI ELECTRIC POWER CONS Effective date: 20130320 Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20130320 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130320 Address after: 050021 Shijiazhuang Province, Yuhua Province Sports street, South Street, No. 238, No. Patentee after: Electric Power Research Institute of Hebei Electric Power Corporation Patentee after: State Grid Corporation of China Patentee after: Hebei Electric Power Construction & Adjustment Research Institute Address before: 050021 Hebei city of Shijiazhuang Province Sports South Street No. 238 Hebei Electric Power Research Institute Patentee before: Hebei Electric Power Research Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 Termination date: 20150708 |
|
| EXPY | Termination of patent right or utility model |