CN104019926A - Thermocouple matching box for detecting temperature between turbines of engine - Google Patents
Thermocouple matching box for detecting temperature between turbines of engine Download PDFInfo
- Publication number
- CN104019926A CN104019926A CN201410264224.3A CN201410264224A CN104019926A CN 104019926 A CN104019926 A CN 104019926A CN 201410264224 A CN201410264224 A CN 201410264224A CN 104019926 A CN104019926 A CN 104019926A
- Authority
- CN
- China
- Prior art keywords
- resistance
- slope
- deviation
- node
- circuit
- Prior art date
- 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.)
- Pending
Links
Abstract
The invention discloses a thermocouple matching box for detecting temperature between turbines of an engine. The thermocouple matching box comprises a deviation resistor combination linear array and a slope resistor combination linear array, wherein the deviation resistor combination linear array and the slope resistor combination linear array are connected with an electronic controller, the deviation resistor combination linear array is formed by connecting resistors from R1 to R8 in series, the slope resistor combination linear array is formed by connecting resistors from R9 to R16 in series, the two ends of each resistor are in short-circuited connection to form a parallel-connection circuit through a printed wire, and the input end of the printed wire of each resistor is provided with a cut-off node which is used for on-site real measurement and can be connected with the circuit for measuring the circuit; the electronic controller can be used for measuring different combination values of the slope resistors from R9 to R16 through a slope resistor detection circuit, and corresponding slope resistance R is obtained; different combination values of the deviation resistors from R1 to R8 are measured, and corresponding deviation resistance R is obtained. By means of the thermocouple matching box, the deviation correction coefficient and the slope correction coefficient of the engine can be obtained, the trouble that every time the electronic controller is replaced, the electronic controller needs to be matched with the engine is saved, and the out-field guarantee efficiency of the engine is obviously improved.
Description
Technical field
The present invention relates to one and be applicable to the thermopair matching box that temperature between aeromotor gas turbine and free turbine (T45) detects.
Background technology
The too high field monitoring difficulty that makes of engine gas turbine-exit temperature T4, therefore use the temperature T 45 between monitoring gas turbine and free turbine instead, along with load increases, T4 and T45 rise thereupon, between them, there is certain relation, limited T45, just equaled to have limited T4, therefore the thermometric precision of T45 has just determined T4 temperature.Conventionally T45 temperature is to adopt thermocouple measurement average and obtain, be furnished with 8 thermopair parallel connections in order to detect the temperature in T45 cross section at the T45 cross section of engine average mark, but, the temperature-averaging value that these 8 thermopairs measure can not be reacted the actual temperature value in T45 cross section exactly, thereby affect T45 measuring accuracy the final restriction that affects T4, the fuel flow of control engine timely and accurately.The error that the T45 of each engine measures between temperature and the actual temperature in T45 cross section is different, can carry out T45 by T45 matching box and measure the calibration between temperature and T45 cross section actual temperature.
Summary of the invention
Task of the present invention is to provide a kind of aeromotor T45 thermopair matching box method for designing, by engine T45 thermopair matching box, can avoid changing each time engine electronic control system device all needs and the trouble of Engine Matching, significantly improves the efficiency that outfield ensures.
Above-mentioned purpose of the present invention can reach by following measures, a kind of thermopair matching box that detects temperature between engine turbine, comprise the deviation resistor group zygonema battle array and the slope resistance combination linear array that are connected with electronic controller, it is characterized in that: deviation resistor group zygonema battle array is in series by resistance R 1～R8, slope resistance combination linear array is in series by resistance R 9～R16, and every resistance two ends end is shunt circuit independently by printed conductor short circuit, on every resistance printed conductor input end, be equipped with for on-the-spot actual measurement, in place in circuit, measuring resistance blocks node, electronic controller is measured the various combination value of slope resistance R9～R16 by slope resistance testing circuit, obtain corresponding slope resistance R
tiltedly, the various combination value of measured deviation resistance R 1～R8, obtains corresponding deviation resistance R
partially, and according to following formula slope calculations correction factor a and drift correction coefficient b:
Calculate corresponding engine gas generator turbine by temperature T 45H=a × T45+b between formula engine gas turbine and free turbine again and go out the T45 temperature value between free turbine, in formula, C
1, C
2for the constant obtaining according to test figure.
The present invention has following beneficial effect than prior art,
The deviation resistor group zygonema battle array that employing of the present invention is connected with electronic controller and slope resistance combination linear array, according to different engine T45 state of temperatures, revise deviation resistance and the slope resistance value of T45 thermopair matching box,
Before dispatching from the factory, engine all to carry out bench test, in process of the test, just need to determine the error between thermocouple measuring temperature and the actual average temperature in T45 cross section, experimenter can obtain deviation system correction number and Gradient correction coefficient according to calculating, and the drift correction coefficient of this engine and Gradient correction coefficient can be solidified by deviation resistance and the slope resistance resistance of adjusting T45 matching box.Electronic controller gathers drift correction resistance value and Gradient correction resistance value, CPU is by calculating drift correction coefficient and the Gradient correction coefficient that just can know this engine, according to formula T45H=a × T45+b, the T45 section temperature that gathers engine is revised, obtain the true temperature value in T45 cross section, participate in engine control.
After engine dispatches from the factory, resistance controller does not need and engine carries out the error between measured value and the actual value in Matching and modification T45 cross section, only need to gather drift correction resistance value and Gradient correction resistance value, can obtain drift correction coefficient and the Gradient correction coefficient of this engine, thereby exempt from but to carry out in outfield the trouble of parameter adjustment, can avoid changing each time engine electronic control system device all needs and the trouble of Engine Matching, has significantly improved the efficiency that engine outfield ensures.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the thermopair matching box circuit theory schematic diagram that the present invention detects temperature between engine turbine.
In figure: R1～R8 is deviation resistance, R9～R16 is slope resistance, and node 1～16 is for holing truncation points, and 17～19 is exit point.
Embodiment
In embodiment described below, the thermopair matching box of temperature T 45 between monitoring aeromotor gas turbine and free turbine, comprises the deviation resistor group zygonema battle array and the slope resistance combination linear array that are connected with electronic controller.Every resistance two ends end is shunt circuit independently by printed conductor short circuit, is equipped with for on-the-spot actual measurement on every resistance printed conductor input end, and in place in circuit, measuring resistance blocks node; Electronic controller is measured the various combination value of slope resistance R9～R16 by slope resistance testing circuit, obtain corresponding slope resistance R
tiltedly, electronic controller carrys out the various combination value of measured deviation resistance R 1～R8 by deviation resistance detecting circuit, obtain corresponding deviation resistance R
partially, and according to following formula slope calculations correction factor a and drift correction coefficient b:
In formula, C
1, C
2for the constant obtaining according to test figure, then can calculate corresponding T4 temperature value by formula T4=a × T45+b.End points 19 is common port, and end points 17 and end points 19 are deviation resistance output terminal, and end points 18 and end points 19 are slope resistance output terminal.
Deviation resistor group zygonema battle array is in series by the deviation resistance R 1～R8 in independent shunt circuit.In deviation resistor group zygonema battle array, every resistance is by printed conductor short circuit, printed conductor is provided with 1～8 numbering and blocks node, because node and corresponding resistance are relations in parallel, can be according to the relation in parallel of the corresponding resistance of node, select independent shunt circuit to block a certain node in node 1～8, resistance corresponding this node can be accessed in above-mentioned deviation resistor group zygonema battle array circuit, combination obtains needed deviation resistance R
partially.Such as according to on-the-spot actual measured value, R
partially=R1+R3+R6, operating personnel can drill the little electric drill of shunt circuit node 1 use independently, the also line at resistance R 1 two ends disconnects, R1 place in circuit is effective, in like manner operating personnel can drill the little electric drill of shunt circuit node 3,6 use independently, R3, R6 place in circuit are effective, and remaining R2, R4, R5, R7, R8 are due to by track short circuit in parallel, therefore place in circuit is invalid.According to on-the-spot actual measured value needs, in deviation resistor group zygonema battle array circuit, select one of them or the independent shunt circuit of several selection to block node, combination obtains needed total departure resistance R
partially.
Slope resistance combination linear array is in series by the slope resistance R9～R16 in independent shunt circuit.In slope resistance combination linear array, every resistance is by printed conductor short circuit, printed conductor is provided with 9～16 numberings and blocks node, because node and corresponding resistance are relations in parallel, can be according to the relation in parallel of the corresponding resistance of node, select independent shunt circuit to block a certain node in node 9～16, resistance corresponding this node can be accessed in above-mentioned deviation resistor group zygonema battle array circuit, combination obtains needed slope resistance R
tiltedly.Such as according to on-the-spot actual measured value, R
tiltedly=R10+R14+R16, operating personnel drill the little electric drill of node 10 use, the also line at resistance R 10 two ends disconnects, R10 place in circuit is effective, in like manner operating personnel drill the little electric drill of node 14,16 use, R14, R16 place in circuit are effective, and remaining R9, R11, R12, R13, R15 are due to by track short circuit in parallel, therefore place in circuit is invalid.According to on-the-spot actual measured value needs, in slope resistance combination linear array, select one of them or the independent shunt circuit of several selection to block node, combination obtains needed total slope resistance R
tiltedly.
Above-described is only the preferred embodiments of the present invention.It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also make some distortion and improvement, these changes and change should be considered as belonging to protection scope of the present invention.
Claims (7)
1. one kind is detected the thermopair matching box of temperature between engine turbine, comprise the deviation resistor group zygonema battle array and the slope resistance combination linear array that are connected with electronic controller, it is characterized in that: deviation resistor group zygonema battle array is in series by resistance R 1～R8, slope resistance combination linear array is in series by resistance R 9～R16, and every resistance two ends are shunt circuit independently by printed conductor short circuit, on every resistance printed conductor input end, be equipped with for on-the-spot actual measurement, in place in circuit, measuring resistance blocks node; Electronic controller is measured the various combination value of slope resistance R9～R16 by slope resistance testing circuit, obtain corresponding slope resistance R
tiltedly, the various combination value of measured deviation resistance R 1～R8, obtains corresponding deviation resistance R
partially, and according to following formula slope calculations correction factor a and drift correction coefficient b:
Calculate corresponding engine gas generator turbine by temperature T 45H=a × T45+b between formula engine gas turbine and free turbine again and go out the T45 temperature value between free turbine, in formula, C
1, C
2for the constant obtaining according to test figure.
2. the thermopair matching box of temperature between detection engine turbine as claimed in claim 1, is characterized in that: deviation resistor group zygonema battle array is in series by the deviation resistance R 1～R8 in independent shunt circuit.
3. the thermopair matching box of temperature between detection engine turbine as claimed in claim 2, it is characterized in that: in deviation resistor group zygonema battle array, every resistance is by printed conductor short circuit, printed conductor is provided with 1～8 numbering and blocks node, according to the relation in parallel of the corresponding resistance of node, select independent shunt circuit to block a certain node in node 1～8, resistance corresponding this node can be accessed in above-mentioned deviation resistor group zygonema battle array circuit, combined value obtains the deviation resistance R needing
partially.
4. the thermopair matching box of temperature between detection engine turbine as claimed in claim 2, it is characterized in that: according to on-the-spot actual measured value needs, in deviation resistor group zygonema battle array circuit, select one of them or the independent shunt circuit of several selection to block node, combination obtains needed total departure resistance R
partially.
5. the thermopair matching box of temperature between detection engine turbine as claimed in claim 1, is characterized in that: slope resistance combination linear array is in series by the slope resistance R9～R16 in independent shunt circuit.
6. the thermopair matching box of temperature between detection engine turbine as claimed in claim 5, it is characterized in that: in slope resistance combination linear array, every resistance is by printed conductor short circuit, printed conductor is provided with 9～16 numberings and blocks node, according to the relation in parallel of the corresponding resistance of node, select independent shunt circuit to block a certain node in node 9～16, resistance corresponding this node can be accessed in above-mentioned deviation resistor group zygonema battle array circuit, combination obtains needed slope resistance R
tiltedly.
7. the thermopair matching box of temperature between detection engine turbine as claimed in claim 5, it is characterized in that: according to on-the-spot actual measured value needs, in slope resistance combination linear array, select one of them or the independent shunt circuit of several selection to block node, combination obtains needed total slope resistance R
tiltedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410264224.3A CN104019926A (en) | 2014-06-13 | 2014-06-13 | Thermocouple matching box for detecting temperature between turbines of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410264224.3A CN104019926A (en) | 2014-06-13 | 2014-06-13 | Thermocouple matching box for detecting temperature between turbines of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104019926A true CN104019926A (en) | 2014-09-03 |
Family
ID=51436806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410264224.3A Pending CN104019926A (en) | 2014-06-13 | 2014-06-13 | Thermocouple matching box for detecting temperature between turbines of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104019926A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201589677U (en) * | 2009-12-03 | 2010-09-22 | 中国南方航空工业(集团)有限公司 | Torque signal matching box |
| CN201747464U (en) * | 2009-12-03 | 2011-02-16 | 中国南方航空工业(集团)有限公司 | Signal matching box for aircraft engines |
| US8334749B1 (en) * | 2009-09-28 | 2012-12-18 | General Electric Company | Temperature detection in a gas turbine |
| CN103542959A (en) * | 2013-10-29 | 2014-01-29 | 中国航空动力机械研究所 | Method for calibrating average temperature of T45 section of turboshaft engine |
| CN103542965A (en) * | 2013-10-29 | 2014-01-29 | 中国航空动力机械研究所 | Torque measuring system and torque calibrating method of output shaft of turboshaft engine |
-
2014
- 2014-06-13 CN CN201410264224.3A patent/CN104019926A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8334749B1 (en) * | 2009-09-28 | 2012-12-18 | General Electric Company | Temperature detection in a gas turbine |
| CN201589677U (en) * | 2009-12-03 | 2010-09-22 | 中国南方航空工业(集团)有限公司 | Torque signal matching box |
| CN201747464U (en) * | 2009-12-03 | 2011-02-16 | 中国南方航空工业(集团)有限公司 | Signal matching box for aircraft engines |
| CN103542959A (en) * | 2013-10-29 | 2014-01-29 | 中国航空动力机械研究所 | Method for calibrating average temperature of T45 section of turboshaft engine |
| CN103542965A (en) * | 2013-10-29 | 2014-01-29 | 中国航空动力机械研究所 | Torque measuring system and torque calibrating method of output shaft of turboshaft engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588667B (en) | A kind of high-accuracy compensation by thermistor calibrating installation | |
| CN203132741U (en) | Thermal resistance temperature transmitter calibration device | |
| CN105651409B (en) | Cold junction compensation temperature measurement circuit and device | |
| CN108195447A (en) | flowmeter calibration system and calibration method | |
| CN107101741A (en) | A kind of temp measuring system and method | |
| CN107255534B (en) | A kind of error measurement method of Thermistor Temperature Measurement instrument | |
| CN106679841A (en) | Temperature detecting device and temperature detecting method | |
| CN102798481A (en) | Cold junction compensation temperature measurement method of thermocouple | |
| CN104180929A (en) | Calibration method of thermal resistance type hot-fluid sensor | |
| CN107132417B (en) | A kind of precision resister measurement method of reactive circuit parameter drift | |
| CN105092095A (en) | Temperature calibrating method and device | |
| CN105466633A (en) | Pressure sensor calibration device under low temperature | |
| CN107179146A (en) | A kind of transformer oil surface thermometer intelligent online method of calibration | |
| CN106568535B (en) | Precision detection system of motor vehicle exhaust emission temperature sensor | |
| CN203908696U (en) | Torque signal matching box of power output rotating shaft of engine | |
| CN104019926A (en) | Thermocouple matching box for detecting temperature between turbines of engine | |
| CN107687905A (en) | A kind of platinum resistance temperature harvester | |
| CN104280582B (en) | A kind of current in resistance property antidote, rectifier and testing current in resistance property instrument | |
| CN103003674A (en) | Method for determining a resulting total mass flow to an exhaust gas mass flow sensor | |
| CN106908165A (en) | Using the method and apparatus of thermosensitive resistance measurement temperature | |
| CN207408021U (en) | A kind of New temperature transmitter experimental device | |
| CN103134617A (en) | Intelligent heat engineering verification system | |
| CN110244128A (en) | Thermal resistance four-wire system real-time measurement circuit and its implementation | |
| CN113030611A (en) | Line loss information planning system based on actual measurement information | |
| CN108204865A (en) | Industrial instrument, industrial control system and RTD temp measuring methods |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140903 |