CN203259205U - Measuring device for turbine high and medium pressure cylinder shaft seal overflowed steam flow - Google Patents
Measuring device for turbine high and medium pressure cylinder shaft seal overflowed steam flow Download PDFInfo
- Publication number
- CN203259205U CN203259205U CN 201320206009 CN201320206009U CN203259205U CN 203259205 U CN203259205 U CN 203259205U CN 201320206009 CN201320206009 CN 201320206009 CN 201320206009 U CN201320206009 U CN 201320206009U CN 203259205 U CN203259205 U CN 203259205U
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- China
- Prior art keywords
- shaft seal
- pressure cylinder
- cylinder shaft
- steam flow
- sensor
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- Expired - Fee Related
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- 238000005259 measurement Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000013480 data collection Methods 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Turbine Rotor Nozzle Sealing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model relates to a measuring device for turbine high and medium pressure cylinder shaft seal overflowed steam flow. The measuring device comprises a sensor set, a data collection unit, and a calculation and display unit, wherein the data collection unit is connected with the sensor set, and the calculation and display unit is connected with the data collection unit. The sensor set is composed of a flow sensor, a pressure sensor and a temperature sensor. The measuring device solves the problem that currently, the overflowed steam flow of a high and medium pressure cylinder shaft seal of a power plant DCS can not be directly monitored, and provides accurate foundation for monitoring the operation state of units in the power plant.
Description
Technical field
The utility model relates to the measurement mechanism of the excessive steam flow amount of a kind of steam turbine high intermediate pressure cylinder shaft seal.
Background technology
Along with the pressure increasing of national energy-saving and reduction of discharging, the mode of power plant's heat supply unit central heating is adopted in each big city, has obtained increasing application.Its advantage is mainly reflected in: (1) is large owing to the Power Plant installed capacity, the energy loss less; (2) power plant's heat supply unit because energy can be realized the utilization of step, can directly improve the economy of Power Plant operation except heat supply.
Power plant's heat supply unit is in service, and heating steam supply flow is directly relevant with the external heating load of unit, is the important monitored parameter of unit therefore.Usually, the supervision of heating steam supply flow is not because the steam line diameter greatly generally adopts the mode of direct measurement, and the mode of the hydrophobic flow of heat exchangers for district heating is measured in more employing.Because the heat exchangers for district heating drain temperature is higher, adopt simple method of calculating flux can produce larger error in the Power Plant DCS control system.
The utility model content
Technical problem to be solved in the utility model provide a kind of simple in structure, measure the overflow measurement mechanism of steam flow amount of more convenient accurate steam turbine high intermediate pressure cylinder shaft seal.
The utility model adopts following technical scheme:
The utility model sensor group, the data acquisition unit that is connected with the sensor group and the calculating that is connected with data acquisition unit and display unit form, and described sensor group is comprised of flow sensor, pressure transducer and temperature sensor.
Described calculating and display unit are PC or notebook computer.
The model of described data acquisition unit is OM-DAQPRO-6300.
Good effect of the present utility model is as follows:
(1) the utility model mainly is by being arranged in flow sensor and the temperature sensor measurement data on the attemperator desuperheating water pipeline, and the pressure transducer on the gland steam pipeline and temperature sensor, process and storage by data acquisition unit, finally in calculating and display unit, realize data calculating, show and process, it has solved the accurate real time monitoring problem of the excessive steam flow amount of Power Plant high intermediate pressure cylinder shaft seal, not only one-piece construction is fairly simple, and it is convenient to measure, and can provide accurately data for the economy that unit operation accurately calculates in power plant.
(2) adopt the utility model to solve the problem that the excessive steam flow amount of high intermediate pressure cylinder shaft seal can't directly be monitored in the present Power Plant DCS System, provide accurate foundation for power plant accurately monitors the running status of unit.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model is comprised of sensor group, the data acquisition unit 4 that is connected with the sensor group and the calculating that is connected with data acquisition unit 4 and display unit 5, described sensor group is comprised of flow sensor 1, pressure transducer 2 and temperature sensor 3, and described calculating and display unit 5 are PC or notebook computer.
The utility model is passed to data acquisition unit by pressure transducer, temperature sensor and flow sensor image data with the data-signal that gathers, and calculates according to following heat balance equation by flow rate calculation and display unit at last:
In the formula: F is the measured excessive steam flow amount of high intermediate pressure cylinder shaft seal, the t/h of unit; F3 is shaft seal temperature-decreased pressure reducer desuperheating water flow, the t/h of unit; H1 represents the high intermediate pressure cylinder decatize vapour enthalpy that overflows, the kJ/kg of unit, enthalpy H1=f (p1, T1); H2 represents the high intermediate pressure cylinder steam enthalpy behind the vapour shaft seal attemperator that overflows, the kJ/kg of unit, enthalpy H2=f (p1, T2); H3 represents the high intermediate pressure cylinder vapour shaft seal attemperator desuperheating water enthalpy that overflows, the kJ/kg of unit, enthalpy H3=f (T3).The computing formula of enthalpy is carried out according to formula among the international standard IFC97.
Sensor connecting line described in the utility model is fixed on the terminal of described data acquisition unit by the mode of bolted, mode by usb communication line between described data acquisition unit and flow rate calculation and the display unit is connected, communications protocol adopts USB 1.1, the utility model carries out Real-Time Monitoring by the excessive steam flow amount to Power Plant high intermediate pressure cylinder shaft seal, can provide foundation for instructing power plant's heat supply power unit in economic operation, satisfy the needs of Power Plant economy operation.
Claims (3)
1. the steam turbine high intermediate pressure cylinder shaft seal measurement mechanism of steam flow amount that overflows, it is characterized in that it is comprised of sensor group, the data acquisition unit (4) that is connected with the sensor group and the calculating that is connected with data acquisition unit (4) and display unit (5), described sensor group is comprised of flow sensor (1), pressure transducer (2) and temperature sensor (3).
2. the measurement mechanism of the excessive steam flow amount of a kind of steam turbine high intermediate pressure cylinder shaft seal according to claim 1 is characterized in that described calculating and display unit (5) are PC or notebook computer.
3. a kind of steam turbine high intermediate pressure cylinder shaft seal according to claim 1 and 2 measurement mechanism of steam flow amount that overflows, the model that it is characterized in that described data acquisition unit (4) is OM-DAQPRO-6300.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206009 CN203259205U (en) | 2013-04-23 | 2013-04-23 | Measuring device for turbine high and medium pressure cylinder shaft seal overflowed steam flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206009 CN203259205U (en) | 2013-04-23 | 2013-04-23 | Measuring device for turbine high and medium pressure cylinder shaft seal overflowed steam flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259205U true CN203259205U (en) | 2013-10-30 |
Family
ID=49471761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320206009 Expired - Fee Related CN203259205U (en) | 2013-04-23 | 2013-04-23 | Measuring device for turbine high and medium pressure cylinder shaft seal overflowed steam flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203259205U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940473A (en) * | 2014-04-29 | 2014-07-23 | 国家电网公司 | Method and device for testing inter-cylinder glandpacking leakage of high-pressure and intermediate-pressure cylinder combination turbine |
| CN103954321A (en) * | 2014-04-29 | 2014-07-30 | 国家电网公司 | Novel method and novel device for testing gas leaking quantity of shaft seal between cylinders of turbine with combination cylinder of high and intermediate pressure cylinder |
-
2013
- 2013-04-23 CN CN 201320206009 patent/CN203259205U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940473A (en) * | 2014-04-29 | 2014-07-23 | 国家电网公司 | Method and device for testing inter-cylinder glandpacking leakage of high-pressure and intermediate-pressure cylinder combination turbine |
| CN103954321A (en) * | 2014-04-29 | 2014-07-30 | 国家电网公司 | Novel method and novel device for testing gas leaking quantity of shaft seal between cylinders of turbine with combination cylinder of high and intermediate pressure cylinder |
| CN103954321B (en) * | 2014-04-29 | 2017-04-19 | 国家电网公司 | Method and device for testing gas leaking quantity of shaft seal between cylinders of turbine with combination cylinder of high and intermediate pressure cylinder |
| CN103940473B (en) * | 2014-04-29 | 2017-08-04 | 国家电网公司 | The method of testing and device of gland leak-off amount between a kind of high intermediate pressure cylinder conjunction cylinder cylinder of steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131030 Termination date: 20160423 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |