CN2775613Y - Steam metering intelligent integrating instrument - Google Patents
Steam metering intelligent integrating instrument Download PDFInfo
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- CN2775613Y CN2775613Y CN 200420055197 CN200420055197U CN2775613Y CN 2775613 Y CN2775613 Y CN 2775613Y CN 200420055197 CN200420055197 CN 200420055197 CN 200420055197 U CN200420055197 U CN 200420055197U CN 2775613 Y CN2775613 Y CN 2775613Y
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Abstract
The utility model relates to a steam metering intelligent integrating instrument, which mainly forms an integral system by a host, a flow sensor, a pressure sensor, a temperature sensor, etc. The integrating instrument system has high integration degree, which integrates a plurality of sensors, temperature sensor T or pressure sensor P signals can be singly input through the selectable input end of a keyboard 8, or the temperature sensor T and the pressure sensor P signals are simultaneously input into the selection input end. When the temperature sensor T or the pressure sensor P signals are singly input into the input end, the utility model is used for measuring saturated steam; when the temperature sensor T and the pressure sensor P signals are simultaneously input into the input end, the utility model is used for measuring superheated steam; the utility model can also automatically detect, calculate, display and transmit signals in long distance to steam measurement data. The steam metering intelligent integrating instrument has the advantages of high meterring accuracy, reliable operation and micro power consumption. The steam is used as the secondary energy, and the utility model has profound social significance to accurate metering for steam.
Description
Technical field
The utility model relates to the collection and the treating apparatus of steam measurement data, the steam measurement intelligent integral-counting instrument of particularly a kind of speed mode and differential pressure type steam-flow meter.
Background technology
Steam is as secondary energy, and its accurate metering is had the important social meaning.Existing steam measurement because the complicacy of steam measurement mathematical model, mostly adopts lookup table mode or from fitting formula, or does not adopt the mathematical formulae of up-to-date international standard, and computational accuracy is poor; Or adopt temperature transmitter, pressure unit, flow sensor (transmitter) to be installed separately separately, and measure to method together each sensor is integrated again, there is the transformed error of each input quantity, it is poor to cause measuring accuracy; Or under the actual situation that departs from saturated-vapor state, be used as the saturated vapour metering, only adopt a temperature sensor or pressure transducer separately, cause metering incorrect, or the result is output as mass unit, as closing unit, for development trend from now on, can not satisfy with the situation of heat as the closing unit of steam.
Summary of the invention
The purpose of this utility model is just at the shortcoming and defect part of existing technology, the steam measurement intelligent integral-counting instrument that provides a kind of steam measurement to use.It can carry out the keyboard setting operation according to demand, selects metering saturated vapour or superheated vapor.When selecting the signal of input end independent input temp sensor T or pressure transducer P, be used for measurement to saturated vapour by keyboard; When selecting input end while input temp sensor T and pressure transducer P signal by keyboard, be used for measurement to superheated vapor.It to flow, temperature, the pressure of steam gather in real time, handle, demonstration and teletransmission output, the amount of exportable demonstration is relevant steam parameter: temperature, pressure, density, heat content, volumetric flow rate, volume total amount, mass rate, quality total amount, heat flow, heat total amount can provide the signal of transmission to have and the corresponding pulse duration frequency signal of volumetric flow rate, 4mA～20mA normalized current signal (two wires or three-way), RS485 data communication interface, RF radio frequency signal.
Steam measurement intelligent integral-counting instrument of the present utility model is characterized in that mainly being made up of flow sensor Q, temperature sensor T, pressure transducer P and main frame; Host circuit is to be the Single Chip Microcomputer (SCM) system of core with single-chip microcomputer 10, and its circuit is connected to: power supply circuit 20 is connected with each circuit; Display screen 11 connects (adopting liquid crystal display drive circuit 12 and LCDs 11 for good) with the display driver circuit 12 that is connected with single-chip microcomputer 10; Flow sensor Q is connected with flow signal treatment circuit 5 on the main frame, and flow signal treatment circuit 5 is connected with the single-chip microcomputer 10 of main frame; Pressure transducer P is connected with pressure modulate circuit 1, temperature sensor T is connected with temperature modulate circuit 2, and pressure modulate circuit 1 and temperature modulate circuit 2 are with multi-way switch 3 and connect multi-way switch 3 and operation amplifier circuit 4 connections that are connected with single-chip microcomputer 10; The circuit that is connected with single-chip microcomputer 10 also has crystal oscillating circuit 6 and keyboard 8 (when selecting the signal of input end independent input temp sensor T or pressure transducer P by keyboard 8, to be used for the measurement to saturated vapour; When selecting input end while input temp sensor T and pressure transducer P signal, be used for measurement to superheated vapor by keyboard 8.)。
Steam measurement intelligent integral-counting instrument of the present utility model compared with prior art has the following advantages: system integration degree height, integrated a plurality of sensor, can select input end independent input temp sensor T or pressure transducer P signal by keyboard 8, or selection input end while input temp sensor T and pressure transducer P signal, when input end independent input temp sensor T or pressure transducer P signal, be used for measurement to saturated vapour; When input end while input temp sensor T and pressure transducer P signal, be used for measurement to superheated vapor.Integral body has very high reliability, the long-term automatic gauge steam of energy, the measuring accuracy height, the video data amount is big, and the amount of exportable demonstration is relevant steam parameter: temperature, pressure, density, heat content, volumetric flow rate, volume total amount, mass rate, quality total amount, heat flow, heat total amount; The output interface feature richness can provide the signal of transmission to have and the corresponding pulse duration frequency signal of volumetric flow rate, 4mA～20mA normalized current signal (two wires or three-way), RS485 data communication interface, RF radio frequency signal, is convenient to the host computer centralized management; For adapting to development trend, integrating instrument can measure heat.Can use this integrating instrument to carry out long-term on-line continuous metering, make steam measurement reach a new hi-tech water.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is the circuit block diagram of the electric principle of steam measurement intelligent integral-counting instrument of the present utility model.
Fig. 2 is the main program flow chart of steam measurement intelligent integral-counting instrument of the present utility model.
Among the figure: 1. pressure modulate circuit, 2. temperature modulate circuit, 3. multi-way switch, 4. operation amplifier circuit, 5. flow signal treatment circuit, 6. crystal oscillating circuit, 7.EEPROM storer, 8. keyboard, the 9. anti-deadlock circuit of hardware, 10. single-chip microcomputer, 11. display screen, 12. display driver circuits, 13. pulsed frequency output circuit modules, 14.4mA～20mA current output circuit module, 15.RS485 the datel circuit module, 16. radio communication circuit modules, 17. outside 24VDC power supplys, 18. lithium battery, 19. electric power management circuit, 20. power supply circuits, Q. flow sensor, P. pressure transducer, the T. temperature sensor.
Embodiment
As shown in Figure 1, steam measurement intelligent integral-counting instrument of the present utility model is characterized in that mainly being made up of flow sensor Q, temperature sensor T, pressure transducer P and main frame; Host circuit is to be the Single Chip Microcomputer (SCM) system of core with single-chip microcomputer 10, and its circuit is connected to: power supply circuit 20 is connected with each circuit; Display screen 11 connects (adopting liquid crystal display drive circuit 12 and LCDs 11 for good) with the display driver circuit 12 that is connected with single-chip microcomputer 10; Flow sensor Q is connected with flow signal treatment circuit 5 on the main frame, and flow signal treatment circuit 5 is connected with the single-chip microcomputer 10 of main frame; Pressure transducer P is connected with pressure modulate circuit 1, temperature sensor T is connected with temperature modulate circuit 2, and pressure modulate circuit 1 and temperature modulate circuit 2 are with multi-way switch 3 and connect multi-way switch 3 and operation amplifier circuit 4 connections that are connected with single-chip microcomputer 10; The circuit that is connected with single-chip microcomputer 10 also has crystal oscillating circuit 6 and keyboard 8 (when selecting the signal of input end independent input temp sensor T or pressure transducer P by keyboard 8, to be used for the measurement to saturated vapour; When selecting input end while input temp sensor T and pressure transducer P signal, be used for measurement to superheated vapor by keyboard 8.)。Because the needs of function, the hardware circuit that is connected with Single Chip Microcomputer (SCM) system also comprises: eeprom memory 7, the anti-deadlock circuit 9 of hardware, pulsed frequency output circuit module 13,4mA～20mA current output circuit module 14, RS485 datel circuit module 15, radio communication circuit module 16, outside 24VDC power supply 17, lithium battery 18, electric power management circuit 19.
The modularized circuit design is adopted in remote transfer signal output, and every kind of output signal all adopts an independent circuit module, can increase and decrease as required; Output circuit adopts photoelectric isolation technology, thereby improves the anti-interference of system greatly.
Described steam measurement intelligent integral-counting instrument is characterized in that: the data model of the program of single-chip microcomputer 10 adopts " the IAPWS water and steam macroscopic property 1997 industrial formula " of international water and steam association or is called for short " IAPWS-IP97 formula ".In the program of this integrating instrument, because " IAPWS-IP97 " formula complexity of calculation, adopt the nybble single-precision floating point number format of IEEE754 to add, subtract, computings such as multiplication and division, comparison, numeral system conversion, the program modularity structure, clear understandable, easy to maintenance.
Described steam measurement intelligent integral-counting instrument, it is characterized in that: flow sensor Q is the speed mode flow sensor, its flow signal treatment circuit 5 is output as pulse duration frequency signal and is connected with the counter port of single-chip microcomputer 10, or flow sensor Q is differential pressure flow sensor, and its flow signal treatment circuit 5 is output as with the differential pressure value corresponding voltage signal and is connected with the single-chip microcomputer 10 of main frame.
Described steam measurement intelligent integral-counting instrument, it is characterized in that: single-chip microcomputer can be connected with pulsed frequency output circuit module 13,4mA～20mA current output circuit module 14, RS485 datel circuit module 15, radio communication circuit module 16 by the I/O mouth, the networking of convenience and host computer.
Described steam measurement intelligent integral-counting instrument, it is characterized in that Single Chip Microcomputer (SCM) system power supply employing power management techniques, outside 24VDC power supply 17 and lithium battery 18 and electric power management circuit 19 also connect, electric power management circuit 19 is connected with Single Chip Microcomputer (SCM) system power supply circuit 20, when only using lithium battery 18 power supplies, programmed control management by electric power management circuit 19 and single-chip microcomputer, the power supply average power consumption is not more than 200 μ A, and when lithium battery 18 supply voltages are lower than 3.6V, as long as battery does not exhaust fully, then Single Chip Microcomputer (SCM) system power supply 20 supply voltages maintain 3.6V, have guaranteed the reliability of circuit working.
Described steam measurement intelligent integral-counting instrument is characterized in that: Single Chip Microcomputer (SCM) system has adopted hardware to prevent deadlock circuit 9, when system moves owing to external disturbance or unpredictable factor appearance deadlock, by normally operation behind the hardware circuit forced resetting.
Described steam measurement intelligent integral-counting instrument is characterized in that: Single Chip Microcomputer (SCM) system adopts eeprom memory 7, the original data of energy long preservation after outage, and recover the back powering on.Avoid because the loss of data after the outage.
Described steam measurement intelligent integral-counting instrument is characterized in that: all circuit all adopt the essential safety design.Adopt the current limliting power supply mode, comprise the current limliting power supply of internal cell power supply,, can guarantee effectively that instrument safety is explosion-proof the measures such as current limliting power supply of each sensor.
The core of this integrating instrument is a single-chip microcomputer 10, is characterized in that the I/O port number is many, inner integrated a lot of peripheral functions such as AD conversion, UART etc., and little power consumption, processing power is strong etc.Frequency speed according to external crystal oscillation circuit 6 after single-chip microcomputer powers on is moved, temperature sensor T and pressure transducer P are behind signal conditioning circuit separately, carry out the signal amplification earlier by entering operation amplifier circuit 4 behind single-chip microcomputer 10 control multi-way switchs 3 gatings, carry out the AD conversion again to the inside of single-chip microcomputer 10, flow sensor Q is connected with the I/O port of single-chip microcomputer 10 behind flow signal treatment circuit 5.Single-chip microcomputer 10 collects and respectively passes the laggard row operation of sensor signal, and the result is exported demonstration, promptly by with the interface of display driver circuit 12 (adopt liquid crystal display drive circuit be good 12), with data presentation to display screen 11 (it is good adopting LCDs 11); When detecting wireless communication signals, promptly carry out data transmission by wireless communication module 16 according to predetermined communication protocol; When detecting 17 power supplies of outside 24VDC power supply, by the 13 output pulses of pulsed frequency output circuit module, and judge whether two wires or three-way 4mA～20mA current output circuit module 14 and output automatically, when receiving data, carry out data transmission according to communication protocol by RS485 datel circuit module 15 by RS485 datel circuit module 15 communication ports; When program because when unpredictable factor " race flies " or " deadlocks ", the anti-deadlock circuit 9 pressure single-chip microcomputers of the hardware on the single-chip microcomputer 10 reset to enter normal operating conditions.Add fashionable as outside 24VDC power supply 17, internal cell 18 cuts off power supply automatically to save electric energy, as when not having outside 24VDC power supply 17, internal cell 18 automatic powers then, when internal cell 18 in use consumes at leisure and sends a telegraph pressure drop when low, electric power management circuit 19 keeps 3.6V voltage constant until the complete no-output electric current of battery automatically, has guaranteed the stable of Single Chip Microcomputer (SCM) system power supply 20 like this.
Claims (9)
1. a steam measurement intelligent integral-counting instrument is characterized in that mainly being made up of flow sensor (Q), temperature sensor (T), pressure transducer (P) and main frame; Host circuit is to be the Single Chip Microcomputer (SCM) system of core with single-chip microcomputer (10), and its circuit is connected to: power supply circuit (20) is connected with each circuit; Display screen (11) connects with the display driver circuit (12) that is connected with single-chip microcomputer (10); Flow sensor (Q) is connected with flow signal treatment circuit (5) on the main frame, and flow signal treatment circuit (5) is connected with the single-chip microcomputer (10) of main frame; Pressure transducer (P) is connected with pressure modulate circuit (1), temperature sensor (T) is connected with temperature modulate circuit (2), pressure modulate circuit (1) and temperature modulate circuit (2) are with multi-way switch (3) and connect multi-way switch (3) and operation amplifier circuit (4) connection that is connected with single-chip microcomputer (10); The circuit that is connected with single-chip microcomputer (10) also has crystal oscillating circuit (6) and keyboard (8); When selecting the signal of independent input temp sensor of input end (T) or pressure transducer (P), be used for measurement to saturated vapour by keyboard (8); When selecting input end while input temp sensor (T) and pressure transducer (P) signal by keyboard (8), be used for measurement to superheated vapor.
2, a kind of steam measurement intelligent integral-counting instrument according to claim 1, it is characterized in that Single Chip Microcomputer (SCM) system power supply employing power management techniques, outside 24VDC power supply (17) and lithium battery (18) and electric power management circuit (19) also connect, electric power management circuit (19) is connected with Single Chip Microcomputer (SCM) system power supply circuit (20), when only using lithium battery (18) power supply, the complete machine average power consumption is not more than 200 μ A.
3, a kind of steam measurement intelligent integral-counting instrument according to claim 1 and 2, it is characterized in that flow sensor (Q) is the speed mode flow sensor, its flow signal treatment circuit (5) is output as pulse duration frequency signal and is connected with the counter port of single-chip microcomputer (10), or flow sensor (Q) is differential pressure flow sensor, and its flow signal treatment circuit (5) is output as with the differential pressure value corresponding voltage signal and is connected with the single-chip microcomputer (10) of main frame.
4, a kind of steam measurement intelligent integral-counting instrument according to claim 1 and 2, the data model that it is characterized in that the program of single-chip microcomputer (10) adopt " the IAPWS water and steam macroscopic property 1997 industrial formula " of international water and steam association or are called for short " IAPWS-IF97 formula ".
5, a kind of steam measurement intelligent integral-counting instrument according to claim 3, the data model that it is characterized in that the program of single-chip microcomputer (10) adopt " the IAPWS water and steam macroscopic property 1997 industrial formula " of international water and steam association or are called for short " IAPWS-IF97 formula ".
6, a kind of steam measurement intelligent integral-counting instrument according to claim 1 and 2, it is characterized in that the hardware circuit that is connected with single-chip microcomputer (10) system also comprises: eeprom memory (7), the anti-deadlock circuit (9) of hardware, pulsed frequency output circuit module (13), 4mA～20mA current output circuit module (14), RS485 datel circuit module (15), radio communication circuit module (16).
7, a kind of steam measurement intelligent integral-counting instrument according to claim 3, it is characterized in that the hardware circuit that is connected with single-chip microcomputer (10) system also comprises: eeprom memory (7), the anti-deadlock circuit (9) of hardware, pulsed frequency output circuit module (13), 4mA～20mA current output circuit module (14), RS485 datel circuit module (15), radio communication circuit module (16).
8, a kind of steam measurement intelligent integral-counting instrument according to claim 4, it is characterized in that the hardware circuit that is connected with single-chip microcomputer (10) system also comprises: eeprom memory (7), the anti-deadlock circuit (9) of hardware, pulsed frequency output circuit module (13), 4mA～20mA current output circuit module (14), RS485 datel circuit module (15), radio communication circuit module (16).
9, a kind of steam measurement intelligent integral-counting instrument according to claim 5, it is characterized in that the hardware circuit that is connected with single-chip microcomputer (10) system also comprises: eeprom memory (7), the anti-deadlock circuit (9) of hardware, pulsed frequency output circuit module (13), 4mA～20mA current output circuit module (14), RS485 datel circuit module (15), radio communication circuit module (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420055197 CN2775613Y (en) | 2004-12-15 | 2004-12-15 | Steam metering intelligent integrating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420055197 CN2775613Y (en) | 2004-12-15 | 2004-12-15 | Steam metering intelligent integrating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775613Y true CN2775613Y (en) | 2006-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420055197 Expired - Lifetime CN2775613Y (en) | 2004-12-15 | 2004-12-15 | Steam metering intelligent integrating instrument |
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| Country | Link |
|---|---|
| CN (1) | CN2775613Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928157A (en) * | 2012-11-06 | 2013-02-13 | 成都千嘉科技有限公司 | Calibration system and method for pressure sensor of flow integrator |
| CN103808377A (en) * | 2014-03-11 | 2014-05-21 | 济钢集团有限公司 | Differential pressure type flow measuring system |
-
2004
- 2004-12-15 CN CN 200420055197 patent/CN2775613Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928157A (en) * | 2012-11-06 | 2013-02-13 | 成都千嘉科技有限公司 | Calibration system and method for pressure sensor of flow integrator |
| CN103808377A (en) * | 2014-03-11 | 2014-05-21 | 济钢集团有限公司 | Differential pressure type flow measuring system |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141215 Granted publication date: 20060426 |