CN203287064U - Power plant heating steam supply flow measuring device based on heat balance - Google Patents
Power plant heating steam supply flow measuring device based on heat balance Download PDFInfo
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- CN203287064U CN203287064U CN2013202061072U CN201320206107U CN203287064U CN 203287064 U CN203287064 U CN 203287064U CN 2013202061072 U CN2013202061072 U CN 2013202061072U CN 201320206107 U CN201320206107 U CN 201320206107U CN 203287064 U CN203287064 U CN 203287064U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The utility model relates to a power plant heating steam supply flow measuring device based on heat balance. The power plant heating steam supply flow measuring device is composed of a sensor unit, a data acquiring unit connected with the sensor unit and a calculating and displaying unit in both-way connection with the data acquiring unit. The sensor unit is composed of a flow senor located on a heat-supply network circulating water pipe, a first pressure sensor, a first temperature sensor, a second temperature sensor located on a heat-supply network heater outlet circulating water pipe, a second pressure sensor, a third temperature sensor, a third pressure sensor and a fourth temperature sensor, wherein the first pressure sensor and the first temperature sensor are located on a heat-supply network heater inlet circulating water pipe, the second pressure sensor and the third temperature sensor are located on a heat-supply network heating steam supply pipe, and the third pressure sensor and the fourth temperature sensor are located on a heat-supply network heater outlet water drainage pipe. The outlet ends of the sensors are respectively connected with the input end of the data acquiring unit. The power plant heating steam supply flow measuring device has the advantages of achieving accurate real-time monitoring of power plant heating steam supply flow and being simple in overall structure and convenient to measure.
Description
Technical field
The utility model relates to a kind of based on thermally equilibrated power plant heating steam supply flow measurement device.
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) because the Power Plant installed capacity is large, the energy loss less; (2) power plant's heat supply unit except heat supply, can be realized the utilization of step due to energy, can directly improve the economy of Power Plant operation.
Power plant's heat supply unit is in service, and heating steam supply flow is directly relevant to the external heating load of unit, is therefore the important monitored parameter of unit.Usually, the supervision of heating steam supply flow is due to the large mode that does not generally adopt direct measurement of steam line diameter, and the mode of the hydrophobic flow of power plant's 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
The technical problems to be solved in the utility model is to provide a kind of simple in structure, the convenient steam supply of power plant's heating accurately of measurement flow measurement device, is used for the normal operating hydrophobic flow of monitoring power plant heat exchangers for district heating.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
The utility model is by sensor unit, the data acquisition unit that is connected with sensor unit and with the two-way calculating that is connected of data acquisition unit and display unit, form;
Described sensor unit by being positioned at flow sensor on the heat supply network circulating water pipeline, be positioned at the first pressure transducer and the first temperature sensor on heat exchangers for district heating import circulating water pipeline, be positioned at the second temperature sensor on heat exchangers for district heating outlet circulating water pipeline, be positioned at the second pressure transducer and three-temperature sensor on heat supply network heating steam line, the 3rd pressure transducer and the 4th temperature sensor on heat exchangers for district heating outlet drain water piping form;
The output terminal of described each sensor connects respectively the input end of data acquisition unit.
Described calculating and display unit are PC or the notebook computer that flow rate calculation software is housed.
The model of described data acquisition unit is OM-DAQPRO-5300.
The beneficial effect that adopts technique scheme to produce is:
(1) the utility model is mainly by being arranged in flow sensor, pressure transducer and the temperature sensor measurement data on heat exchangers for district heating import and export heat supply network circulating water pipeline, heating steam line, heat exchangers for district heating drain water piping, process and store by data acquisition unit, finally realize data calculating in calculating and display unit, show and process, it has solved the accurate real time monitoring problem of power plant's heating steam supply flow, not only one-piece construction is simple, and it is convenient to measure, and can provide data accurately for the external evaporation capacity for engine of power plant's accurate-metering and heating load;
(2) the utility model has solved power plant's heating steam supply flow in present Power Plant DCS System and has generally shown the problem that accuracy is poor, monitors accurately that for power plant the running status of heating system provides foundation.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, the utility model is by sensor unit, the data acquisition unit 9 that is connected with sensor unit and with the two-way calculating that is connected of data acquisition unit 9 and display unit 10, form;
Described sensor unit by being positioned at flow sensor 1 on the heat supply network circulating water pipeline, be positioned at the first pressure transducer 2 and the first temperature sensor 5 on heat exchangers for district heating import circulating water pipeline, be positioned at the second temperature sensor 6 on heat exchangers for district heating outlet circulating water pipeline, be positioned at the second pressure transducer 3 and three-temperature sensor 7 on heat supply network heating steam line, the 3rd pressure transducer 4 on heat exchangers for district heating outlet drain water piping and the 4th temperature sensor 8 form;
The output terminal of described each sensor connects respectively the input end of data acquisition unit 9.
Described calculating and display unit 10 are for being equipped with PC or the notebook computer of flow rate calculation software.
The model of described data acquisition unit 10 is OM-DAQPRO-5300.
Described each temperature sensor is arranged in the temperature survey sleeve pipe that is installed on pipeline; Described flow sensor directly be installed on corresponding pipeline on measuring diaphragm be connected.Described each pressure transducer directly is connected with pressure tube by jointing.
The lead-out terminal of described each pressure transducer, each temperature sensor and flow sensor is fastening by the input terminal of bolt and data acquisition unit 9; Be connected by usb communication line between described data acquisition unit 9 and calculating and display unit 10, communications protocol adopts USB 1.1.
Flow sensor 1 in the utility model, the first pressure transducer 2, the first temperature sensor 5, the second temperature sensor 6, the second pressure transducer 3, three-temperature sensor 7, the 3rd pressure transducer 4 and the 4th temperature sensor 8 all represent by the output signal of 4-20mA the data-signal that gathers, pass to data acquisition unit 9, calculate according to formula (1) by calculating and display unit 10 finally:
Wherein, F is heat supply network heating steam supply flow, the t/h of unit;
H
1For heating steam supply enthalpy, the kJ/kg of unit;
H
2For the hydrophobic enthalpy of heat exchangers for district heating, the kJ/kg of unit;
Fw is the heat supply network circulating water flow, and its value is recorded by flow sensor 1, the t/h of unit;
H
3For heat exchangers for district heating outlet heat supply network recirculated water enthalpy, the kJ/kg of unit;
H
4For heat exchangers for district heating import heat supply network recirculated water enthalpy, the kJ/kg of unit.
The enthalpy of above-mentioned medium all calculates according to the computing formula of international standard IFC97, and formula (2)-(5) are as follows:
In formula (2)-(5),
Be respectively heating pressure of steam supply and temperature, its value is recorded by the second pressure transducer 3 and three-temperature sensor 7 respectively, unit be respectively MPa and ℃;
Calculating and display unit 10 have adopted the form of function for the impact of fluid media (medium) temperature and pressure versus flow amount, improved the response speed of calculating display unit.
The utility model is simple in structure, and constructs and measure conveniently, can provide data accurately for normal power plant in service of Measurement accuracy power plant heating steam supply flow.
Claims (3)
1. one kind based on thermally equilibrated power plant heating steam supply flow measurement device, it is characterized in that it by sensor unit, the data acquisition unit (9) that is connected with sensor unit and with the two-way calculating that is connected of data acquisition unit (9) and display unit (10), forms;
Described sensor unit by being positioned at flow sensor (1) on the heat supply network circulating water pipeline, be positioned at the first pressure transducer (2) and the first temperature sensor (5) on heat exchangers for district heating import circulating water pipeline, be positioned at the second temperature sensor (6) on heat exchangers for district heating outlet circulating water pipeline, be positioned at the second pressure transducer (3) and three-temperature sensor (7) on heat supply network heating steam line, the 3rd pressure transducer (4) and the 4th temperature sensor (8) on heat exchangers for district heating outlet drain water piping form;
The output terminal of described each sensor connects respectively the input end of data acquisition unit (9).
2. according to claim 1 a kind of based on thermally equilibrated power plant heating steam supply flow measurement device, it is characterized in that described calculating and display unit (10) they are PC or notebook computer.
3. according to claim 2 a kind of based on thermally equilibrated power plant heating steam supply flow measurement device, the model that it is characterized in that described data acquisition unit (10) is OM-DAQPRO-5300.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202061072U CN203287064U (en) | 2013-04-23 | 2013-04-23 | Power plant heating steam supply flow measuring device based on heat balance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202061072U CN203287064U (en) | 2013-04-23 | 2013-04-23 | Power plant heating steam supply flow measuring device based on heat balance |
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| CN2013202061072U Expired - Fee Related CN203287064U (en) | 2013-04-23 | 2013-04-23 | Power plant heating steam supply flow measuring device based on heat balance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949096A (en) * | 2015-07-16 | 2015-09-30 | 广东美的厨房电器制造有限公司 | Steam generation system as well as liquid flow detection method and device |
| CN110411611A (en) * | 2019-07-24 | 2019-11-05 | 河北冀研能源科学技术研究院有限公司 | A kind of high-precision Gateway Station in Heating Network heating load capacity checking device |
| CN111895489A (en) * | 2020-06-17 | 2020-11-06 | 天津国电津能滨海热电有限公司 | Enthalpy value calculation-based unit heat supply steam extraction flow measuring method |
| CN112880761A (en) * | 2021-01-29 | 2021-06-01 | 山东中实易通集团有限公司 | Method and system for measuring circulating water flow |
| CN113375724A (en) * | 2021-06-29 | 2021-09-10 | 华能太原东山燃机热电有限责任公司 | Heat supply network state monitoring system for gas thermal power plant based on multiple topological structures |
| CN114674585A (en) * | 2022-03-23 | 2022-06-28 | 华电电力科学研究院有限公司 | Heating capacity measuring method, device and system |
-
2013
- 2013-04-23 CN CN2013202061072U patent/CN203287064U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949096A (en) * | 2015-07-16 | 2015-09-30 | 广东美的厨房电器制造有限公司 | Steam generation system as well as liquid flow detection method and device |
| CN104949096B (en) * | 2015-07-16 | 2017-03-08 | 广东美的厨房电器制造有限公司 | Steam generating system and fluid flow detection method and device |
| CN110411611A (en) * | 2019-07-24 | 2019-11-05 | 河北冀研能源科学技术研究院有限公司 | A kind of high-precision Gateway Station in Heating Network heating load capacity checking device |
| CN111895489A (en) * | 2020-06-17 | 2020-11-06 | 天津国电津能滨海热电有限公司 | Enthalpy value calculation-based unit heat supply steam extraction flow measuring method |
| CN112880761A (en) * | 2021-01-29 | 2021-06-01 | 山东中实易通集团有限公司 | Method and system for measuring circulating water flow |
| CN113375724A (en) * | 2021-06-29 | 2021-09-10 | 华能太原东山燃机热电有限责任公司 | Heat supply network state monitoring system for gas thermal power plant based on multiple topological structures |
| CN114674585A (en) * | 2022-03-23 | 2022-06-28 | 华电电力科学研究院有限公司 | Heating capacity measuring method, device and system |
| CN114674585B (en) * | 2022-03-23 | 2024-01-12 | 华电电力科学研究院有限公司 | Heat supply capacity measuring method, device and system |
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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: 20131113 Termination date: 20160423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |