CN105606848A - Online detection method for differential pressure transmitting unit of anemometer - Google Patents
Online detection method for differential pressure transmitting unit of anemometer Download PDFInfo
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- CN105606848A CN105606848A CN201510507024.0A CN201510507024A CN105606848A CN 105606848 A CN105606848 A CN 105606848A CN 201510507024 A CN201510507024 A CN 201510507024A CN 105606848 A CN105606848 A CN 105606848A
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Abstract
The invention discloses an online detection method for a differential pressure transmitting unit of an anemometer. The online detection method adopts a system comprising the differential pressure transmitting unit, a PA bus connector, an RS232-USB data cable, a communication adapter and a calibration system. A differential pressure value is measured through the differential pressure transmitting unit of the anemometer, a pressure signal is transmitted to the calibration system through the PA bus connector via the communication adapter, the calibration system performs operation such as parameter setting, zero adjustment, calibration and fault prompting, and achieves online calibration and data display of the differential pressure transmitting unit of the anemometer. The online detection method comprises the steps of zero adjustment and calibration of the differential pressure transmitting unit, pressure balancing operation and pressure calibration. The online detection method achieves an online detection function of the differential pressure transmitting unit of the anemometer, greatly improves the ability of controlling operation process of the anemometer, and adds an effective detection method.
Description
Technical field
The present invention relates to a kind of online test method, is a kind of differential pressure transporting unit online test method specifically, particularly a kind of anemobiagraph differential pressure transporting unit online test method.
Background technology
Along with the technological transformation of a tobacco business new round, the baking silk technique in fiber tow production workshop has increased the anemobiagraph measuring unit that cut-tobacco drier barrel temperature matches with hot blast temperature and hot blast wind speed, measuring unit adopts integral structure, the differential pressure signal that mechanical pick-up device is measured, be connected to differential pressure transporting cell processing by pressure guiding pipe, and arrive PLC control system by PA bus transfer, according to current detection method and system in use, mainly adopt measuring method and the corresponding measuring system of off-line.
Industry and enterprise measurement technology personnel are to the cycle calibration of this class instrument and safeguard very puzzled, cannot meet the process control requirement of this anemobiagraph, cannot realize the control completely under anemobiagraph core cell presence, and can only evaluate the overall performance error accuracy of anemobiagraph, owing to there is no the support of supporting online test method and system, cannot realize parameter setting, zero-bit adjustment and the demarcation of differential pressure transporting unit. Set up the method and can effectively realize the configuration of anemobiagraph differential pressure transporting unit, demarcate and checking, there is great practical value.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of anemobiagraph differential pressure transporting unit online test method is provided, not only can realize zero-bit adjustment and demarcation under anemobiagraph dynamical state, and can also arrange anemobiagraph differential pressure transporting cell parameters, data show in real time, fault message prompting.
For solving above technical problem, the present invention by the following technical solutions:
A kind of anemobiagraph differential pressure transporting unit online test method, the system that the method adopts comprises differential pressure transporting unit, PA Bussing connector, RS232-USB data cable, communication adapter and calibration system, differential pressure transporting unit connects PA Bussing connector, PA Bussing connector connects communication adapter by RS232-USB data cable, communication adapter connects calibration system, the front end of described differential pressure transporting unit connects differential pressure sensing unit by impulse stop valve, and high-pressure stop valve, low-pressure shutoff valve and balance conducting valve are set on impulse stop valve; The differential pressure value of measuring by anemobiagraph differential pressure transporting unit, pressure signal is transferred to calibration system by PA Bussing connector through communication adapter, calibration system carries out parameter setting, zero-bit is adjusted, demarcate, the operations such as fault prompting, realize the unit on-line proving of anemobiagraph differential pressure transporting and data and show; Described method comprises that differential pressure transporting unit zero-bit is adjusted and demarcation, pressure balance operation and pressure calibration;
1) the zero-bit adjustment under the operation of differential pressure transporting unit or inactive state, comprising: under differential pressure transporting unit running status, have hot blast in mobile situation in airduct; Under differential pressure transporting unit inactive state, in airduct, without the mobile situation of hot blast, the zero-bit of differential pressure transporting unit is revised; Need to before adjustment, need the high-pressure stop valve of differential pressure transporting unit and low-pressure shutoff valve to close, balance conducting valve is opened, and just carries out aforesaid operations;
2) Zero positioning under the operation of differential pressure transporting unit or halted state, comprise: under the operation of differential pressure transporting unit or inactive state, close high-pressure stop valve and low-pressure shutoff valve, open balance conducting valve, and treat that differential pressure transporting cell pressure value tends towards stability, realize Zero positioning operation; Zero positioning action need confirms that the zero value of input is correct, and is carrying out after proving operation, observes zero-bit result; Otherwise need to operate by above-mentioned steps, until zero value is correct;
3) pressure balance under differential pressure transporting unit running status operation, comprising: the demonstration of high pressure and low pressure difference after operation to differential pressure transporting unit impulse stop valve, balance; Described pressure balance action need switch impulse stop valve, after high-pressure stop valve and low-pressure shutoff valve must be closed simultaneously, balance conducting valve is just opened; After pressure balance has operated, balance conducting valve is closed, high-pressure stop valve and low-pressure shutoff valve are opened;
4) pressure calibration under differential pressure transporting unit running status, comprising: under differential pressure transporting unit running status, differential pressure transporting unit is carried out to the demarcation of any range section; Described pressure calibration action need is closed high-pressure stop valve and low-pressure shutoff valve simultaneously, and pressure guiding pipe departs from, any one end Bonding pressure calibration system of impulse stop valve; When impulse stop valve is connected to after pressure calibration system, open this stop valve and continue operation; And differential pressure transporting cell pressure calibrated span is pre-seted, calibrated span can not exceed and pre-sets, otherwise the warning of breaking down; After described pressure calibration has operated, impulse stop valve need to be taken back to measuring system, and high-pressure stop valve and low-pressure shutoff valve are opened.
Anemobiagraph differential pressure transporting of the present invention unit online test method, the operating procedure that it mainly carries out zero-bit adjustment and demarcation by the differential pressure transporting unit under or static state dynamically online to anemobiagraph, realizes differential pressure transporting unit and detects online. Demarcate and operating process in data pass through detection system, anemobiagraph differential pressure transporting unit connects the differential pressure signal of measurement PA Bussing connector by RS232-USB data wire is transferred to calibration system through communication adapter, system is carried out parameter setting, zero-bit is adjusted, demarcate, the operations such as fault prompting, realize the unit on-line proving of anemobiagraph differential pressure transporting and data and show. Realize the online measuring ability in anemobiagraph differential pressure transporting unit, improved greatly the control ability to anemobiagraph running, increased effective detection method.
Detailed description of the invention
The following specific embodiments of the present invention is to make a detailed explanation.
A kind of anemobiagraph differential pressure transporting unit on-line detecting system, this system comprises differential pressure transporting unit, PA Bussing connector, RS232-USB data cable, communication adapter and calibration system, differential pressure transporting unit connects PA Bussing connector, PA Bussing connector connects communication adapter by RS232-USB data cable, communication adapter connects calibration system, the front end of described differential pressure transporting unit connects differential pressure sensing unit by impulse stop valve, and high-pressure stop valve, low-pressure shutoff valve and balance conducting valve are set on impulse stop valve. The differential pressure value of measuring by anemobiagraph differential pressure transporting unit, is transferred to calibration system by PA Bussing connector through communication adapter by pressure signal, and calibration system carries out parameter setting, zero-bit is adjusted, demarcate, fault prompting operation, realizes the unit on-line proving of anemobiagraph differential pressure transporting and data and shows. Described differential pressure sensing unit, for the online detection of anemobiagraph provides differential pressure signal. Impulse stop valve, is carrying out zero-bit adjustment, in pressure balance and calibration process, carries out the adjusting of source of the gas and protects differential pressure sensing unit. Differential pressure transporting unit and PA Bussing connector, the pressure signal that differential pressure sensing unit is measured carries out data processing, and provides interface for transfer of data. RS232-USB data wire, provides the cable trails of transfer of data. Communication adapter, for differential pressure signal data provide data receiver and the interface that transfers to calibration system. Calibration system, provides the parameter setting, data of system to show and the information such as fault prompting.
Software section, demarcating with adjusting is mainly that the individual step of carrying out zero-bit adjustment, Zero positioning and pressure calibration by the online differential pressure transporting unit module dynamically or under static of anemobiagraph operates, zero-bit adjustment refers to carries out zero-bit adjustment to anemobiagraph, zero-bit mark refers to anemobiagraph carried out to zero adjustment, and pressure calibration refers to anemobiagraph is carried out to pressure calibration. Data show it is mainly the real-time Presentation Function of realizing nominal data and measurement data in detection method process. The functions such as system arranges by parameter, fault prompting, realize correct configuration and the process tracking information indicating of differential pressure transporting unit.
Particularly, the described zero-bit adjustment to differential pressure transporting unit is the correction of the zero migration under dynamically online or static state.
Particularly, described zero-bit adjustment is to comprise in airduct having hot blast or the situation without hot blast, can realize online adjustment.
Before described zero-bit is adjusted, high-pressure stop valve and the low-pressure shutoff valve that need to close differential pressure transporting unit, open balance conducting valve, just can operate above-mentioned steps.
When carrying out before zero-bit adjustment, to guarantee that differential pressure transporting unit is connected with PA Bussing connector, and connected in communication adapter, communication adapter is connected with calibration system.
When carrying out before zero-bit adjustment, first calibration system reads pressure signal and the parameter information of current differential pressure transporting unit, confirm errorless after, just can carry out offset correction operation.
Pressure signal is the output of differential pressure transporting unit particularly, can, according to data figure place showing, determine decimal digits and pressure unit.
Parameter signal is the value at current zero point of differential pressure transporting unit particularly.
When zero-bit adjustment completes, calibration system is stored in the value at zero point after adjusting in differential pressure transporting unit, and by this at zero point value be presented in result, the zero value of current anemobiagraph of while is real-time being presented in system screen also.
Preferably, in order to realize the online detection of anemobiagraph differential pressure transporting unit, need further anemobiagraph to be carried out to Zero positioning.
Particularly, described Zero positioning is to comprise in airduct having hot blast or the situation without hot blast, can realize on-line proving.
Before described Zero positioning, need to close high-pressure stop valve and the low-pressure shutoff valve of differential pressure transporting unit, open balance conducting valve, just can operate above-mentioned steps.
When carrying out before Zero positioning, first calibration system can read pressure signal and parameter information, confirm errorless after, just can carry out proving operation.
In the time carrying out Zero positioning, zero value is inputted in zero-bit parameter, confirm errorless after, demarcate.
Preferably, in order to realize the accurate of Zero positioning, need 2～3 Zero positionings operations.
When Zero positioning completes, calibration system by calibrated zero point value be stored in differential pressure transporting unit, and by this at zero point value be presented in result, also real-time being presented in system screen simultaneously.
Described pressure balance operation, in order to realize zero-bit adjustment and demarcation, prevents the overproof fault in differential pressure transporting unit.
Particularly, pressure balance action need switch impulse stop valve, after high pressure and low-pressure shutoff valve must be closed simultaneously, balance conducting valve just can be opened.
Preferably, by observing the current show value of differential pressure transporting unit, evaluate the pressure balance of high pressure and low-pressure end, whether meet the requirements.
Particularly, after pressure balance has operated, first balance conducting valve is closed, secondly could open high pressure and low-pressure shutoff valve simultaneously.
Preferably, by observing the current show value evaluation of differential pressure transporting unit, if measuring system in running status, differential pressure transporting unit display measurement result, if measuring system in halted state, differential pressure transporting unit should be shown as zero.
Preferably, in order to realize the online detection of anemobiagraph differential pressure transporting unit, need further anemobiagraph to be carried out to pressure calibration.
Before described pressure calibration, need to confirm the range ability of differential pressure transporting unit, make differential pressure transporting unit in measurement category.
Particularly, while needs, can pre-set the calibrated span of differential pressure transporting unit, meet field working conditions and technological requirement.
Particularly, after range has pre-seted, pre-set if calibrated span exceeds, system will be pointed out fault alarm.
Described pressure calibration, need to close high pressure and low-pressure shutoff valve simultaneously, and pressure guiding pipe is departed to former measuring system.
Preferably, any one end of impulse stop valve can be connected to pressure calibration system, and open impulse stop valve.
Particularly, in the time that high-pressure stop valve is connected to pressure calibration system, calibration system output normal pressure, differential pressure transporting unit shows positive pressure value, when calibration system output negative pressure, differential pressure transporting unit shows negative pressure value.
Particularly, in the time that low-pressure shutoff valve is connected to pressure calibration system, calibration system output normal pressure, differential pressure transporting unit shows negative pressure value, when calibration system output negative pressure, differential pressure transporting unit shows positive pressure value.
Preferably, high-pressure stop valve can be connected to pressure calibration system, and export full scale normal pressure, wait for that differential pressure transporting unit is stable in corresponding force value. In calibration system, input full scale force value, and determine simultaneously.
Preferably, after pressure full scale has been demarcated, can carry out 5 equal portions to this range ability, respectively this 5 equal portions point be carried out to pressure detecting, by the measurement of upper and lower stroke, checking differential pressure transporting unit has been demarcated accurately.
After described pressure calibration completes, impulse stop valve need to be taken back to measuring system, and impulse stop valve is opened.
Claims (1)
1. an anemobiagraph differential pressure transporting unit online test method, it is characterized in that: the system that the method adopts comprises differential pressure transporting unit, PA Bussing connector, RS232-USB data cable, communication adapter and calibration system, differential pressure transporting unit connects PA Bussing connector, PA Bussing connector connects communication adapter by RS232-USB data cable, communication adapter connects calibration system, the front end of described differential pressure transporting unit connects differential pressure sensing unit by impulse stop valve, on impulse stop valve, high-pressure stop valve is set, low-pressure shutoff valve and balance conducting valve, the differential pressure value of measuring by anemobiagraph differential pressure transporting unit, is transferred to calibration system by PA Bussing connector through communication adapter by pressure signal, and calibration system carries out parameter setting, zero-bit is adjusted, demarcate, fault prompting operation, realizes the unit on-line proving of anemobiagraph differential pressure transporting and data and shows, described method comprises that differential pressure transporting unit zero-bit is adjusted and demarcation, pressure balance operation and pressure calibration,
1) the zero-bit adjustment under the operation of differential pressure transporting unit or inactive state, comprising: under differential pressure transporting unit running status, have hot blast in mobile situation in airduct; Under differential pressure transporting unit inactive state, in airduct, without the mobile situation of hot blast, the zero-bit of differential pressure transporting unit is revised; Need to before adjustment, need the high-pressure stop valve of differential pressure transporting unit and low-pressure shutoff valve to close, balance conducting valve is opened, and just carries out aforesaid operations;
2) Zero positioning under the operation of differential pressure transporting unit or halted state, comprise: under the operation of differential pressure transporting unit or inactive state, close high-pressure stop valve and low-pressure shutoff valve, open balance conducting valve, and treat that differential pressure transporting cell pressure value tends towards stability, realize Zero positioning operation; Zero positioning action need confirms that the zero value of input is correct, and is carrying out after proving operation, observes zero-bit result; Otherwise need to operate by above-mentioned steps, until zero value is correct;
3) pressure balance under differential pressure transporting unit running status operation, comprising: the demonstration of high pressure and low pressure difference after operation to differential pressure transporting unit impulse stop valve, balance; Described pressure balance action need switch impulse stop valve, after high-pressure stop valve and low-pressure shutoff valve must be closed simultaneously, balance conducting valve is just opened; After pressure balance has operated, balance conducting valve is closed, high-pressure stop valve and low-pressure shutoff valve are opened;
4) pressure calibration under differential pressure transporting unit running status, comprising: under differential pressure transporting unit running status, differential pressure transporting unit is carried out to the demarcation of any range section; Described pressure calibration action need is closed high-pressure stop valve and low-pressure shutoff valve simultaneously, and pressure guiding pipe departs from, any one end Bonding pressure calibration system of impulse stop valve; When impulse stop valve is connected to after pressure calibration system, open this stop valve and continue operation; And differential pressure transporting cell pressure calibrated span is pre-seted, calibrated span can not exceed and pre-sets, otherwise the warning of breaking down; After described pressure calibration has operated, impulse stop valve need to be taken back to measuring system, and high-pressure stop valve and low-pressure shutoff valve are opened.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510507024.0A CN105606848A (en) | 2015-08-18 | 2015-08-18 | Online detection method for differential pressure transmitting unit of anemometer |
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| CN201510507024.0A CN105606848A (en) | 2015-08-18 | 2015-08-18 | Online detection method for differential pressure transmitting unit of anemometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109884341A (en) * | 2019-03-25 | 2019-06-14 | 中煤科工集团重庆研究院有限公司 | The method and system that the pressure difference zero point value of measuring wind speed is calibrated automatically |
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| CN101113934A (en) * | 2007-07-24 | 2008-01-30 | 天津天仪集团仪表有限公司 | Intelligent capacitance differential pressure cell and method |
| CN201522317U (en) * | 2009-10-12 | 2010-07-07 | 贵州中烟工业有限责任公司 | Online calibrating device of orifice-plate steam flow measuring system |
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| CN203881412U (en) * | 2014-06-10 | 2014-10-15 | 浙江中宁硅业有限公司 | Device for fast calibrating differential pressure type liquidometer on working condition site |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113934A (en) * | 2007-07-24 | 2008-01-30 | 天津天仪集团仪表有限公司 | Intelligent capacitance differential pressure cell and method |
| CN201522317U (en) * | 2009-10-12 | 2010-07-07 | 贵州中烟工业有限责任公司 | Online calibrating device of orifice-plate steam flow measuring system |
| CN202304903U (en) * | 2011-10-21 | 2012-07-04 | 广州万德威尔自动化系统有限公司 | Exact air quantity measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109884341A (en) * | 2019-03-25 | 2019-06-14 | 中煤科工集团重庆研究院有限公司 | The method and system that the pressure difference zero point value of measuring wind speed is calibrated automatically |
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Application publication date: 20160525 |