CN202869684U - Rotary measurement apparatus of combustion gas temperature field - Google Patents
Rotary measurement apparatus of combustion gas temperature field Download PDFInfo
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- CN202869684U CN202869684U CN 201220486073 CN201220486073U CN202869684U CN 202869684 U CN202869684 U CN 202869684U CN 201220486073 CN201220486073 CN 201220486073 CN 201220486073 U CN201220486073 U CN 201220486073U CN 202869684 U CN202869684 U CN 202869684U
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Abstract
A rotary measurement apparatus of a combustion gas temperature field comprises a data acquisition assembly, a driving assembly and a control system. The data acquisition assembly comprises a rotary body, a temperature measurement sensor head support rod and thermocouple measure points. The driving assembly comprises a motor and a transmission mechanism. The control system comprises a computer, an A/D board, an I/O board, a controller, a signal conversion box, a position sensor, position sensor signals, motor control signals, and thermocouple output signals. A transmission mechanism comprises a motor transmission shaft, a reduction gear mechanism and a rotary body transmission shaft. Through rotation of the motor, a main transmission gear and a transmission gear are driven by the motor transmission shaft to do mesh deceleration transmission, and the rotary body is driven by the rotary body transmission shaft to rotate. Thermocouple measure points are respectively disposed on a comb tooth top portion of the temperature measurement sensor head support rod for measuring temperature. Thermocouple measure point leads are lead out from the temperature measurement sensor head support rod and are fixed to the rotary body, go into a center hole of the transmission shaft after grouping and clustering, and then are connected with a freezing point and is connected into the signal conversion box, and then are connected to the A/D board through a bus, and finally is connected with the computer.
Description
Technical field
The present invention relates to a kind of fuel gas temperature measurement mechanism, relate in particular to a kind of fuel gas temperature field wheel measuring device.
Technical background
The measurement in temperature field, the general Miniature temperature field measurement that is used for, exhaust section temperature field measurement for heating system, in the firing equipment industry, also often use, mainly be according to cross section fuel gas temperature field measurement requirement, require thermometric sense head point position to adopt plug-in type according to the cross section, the fixed position is measured.For the very high high-temperature fuel gas temperature field measurement of accuracy requirement, require measuring point more, plug-in type is measured and can be increased the blockage ratio in exhaust cross section, can cause measurement result to depart from reality, error is larger, as Measuring Time is long in batches, weak effect, and inefficiency, intensity of workers is large.For the temperature field measurement of some special devices, as to the temperature field measurement on the aerospace equipment, adopt the insertion temperature field measurement method can not be suitable for.Adopt stepper motor to drive measuring mechanism by reduction gearing mechanism in prior art 200620036779.3 " rotary self-operated measuring unit " patent and rotate, its measurement mechanism comprises signals collecting mechanism, measurement and control instrument, computing machine and digital voltmeter.Measurement and control instrument comprises that channel decoding circuit, relay switch circuit, stepping motor control circuit and I/O clamp enter computing machine, and its rotary temperature signal collection mechanism comprises stepper motor, speed reduction unit, thermopair and support; The power output shaft of stepper motor is connected with the power input shaft of speed reduction unit, support is connected with reducer output shaft, and the installation of TC is on support, and support comprises three support arms, 5 thermopairs are installed on each support arm, are driven the rotation of reduction gear driving rotating mechanism by stepper motor and measure.It is larger to adopt the relay switch circuit to exist the contact to disturb, and reliability is relatively poor; Adopt stepper motor especially to adopt five as drive motor, have mechanism, circuit complexity, easily lose the step, inaccurate to galvanic couple position degree control accuracy.
Summary of the invention
The technical matters that (1) will solve
Develop the wheel measuring device of a kind of fuel gas temperature field, need to solve the position accuracy of rotation thermometric and data acquisition and the Transfer Technology problem of traveling time requirement and temperature measuring equipment.
(2) technical scheme
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
A kind of fuel gas temperature field wheel measuring device comprises data acquisition assembly, driven unit, control system; Wherein the data acquisition assembly comprises rotary body, measures a sense pole, thermopair measuring point, control system comprises computing machine, A/D plate, I/O plate, controller, signal transfer trunk, position transducer, position sensor signal, Motor Control signal, thermocouple output signal, and driven unit comprises motor, gear train; Described gear train comprises motor shaft, reduction gear, rotary body transmission shaft; Reduction gear is a pair of bevel gear at least, contains main drive gear, transmission gear, is installed in the gear case; Rotary body transmission shaft output terminal is connected to the center of rotary body reinforcement; Motor shaft is connected with main drive gear, the input end of rotary body transmission shaft is connected with transmission gear, rotate by motor, drive main drive gear and transmission gear engagement gearing-down by motor shaft, make the rotation of rotary body transmission shaft driven rotary body; Computing machine is selected ordinary PC, utilizes PCI slot empty in the cabinet that A/D plate and I/O plate are installed, and realizes controlling measurement mechanism; Motor is selected general direct current motor, and position transducer is installed on the motor shaft, and position transducer and motor shaft are provided with linkage, adopts close-loop control mode; Control motor start-up, the controller that stops and signal transfer trunk are installed in control box.
Described rotary body is a kind of annular, is supported by the rotary body reinforcement, and a thermometric sense pole is fixedly mounted in the radial position of rotary body outside, and a thermometric sense pole integral body stretches in the tested air-flow; The thermopair measuring point orientation of a thermometric sense pole is over against tested airflow direction.
Temperature survey is carried out at the broach top that is fixedly mounted on respectively a thermometric sense pole of described each thermopair measuring point, after thermopair measuring point lead-in wire is drawn from a thermometric sense pole, be fixed on rotary body and the rotary body reinforcement, dividing into groups, boundling is laggard to be entered the center transmission shaft hole and draws, connect freezing point access signal transfer trunk, be connected on the A/D plate with a bus, be connected with computing machine.
Described motor adopts close-loop control mode, adopts showing of the motor position that is in and the method for angle value by contrasting that each position, front and back need to rotate, and can eliminate cumulative errors, and position control accuracy reaches ± and 0.4 °; The angle value that target setting value and each position need to rotate can realize that the temperature field is measured automatically at any angle in 360 °, realize the rotary angle position of Real Time Monitoring motor shaft.
Described controller comprises transformer, rectifier filer, solid-state relay I, solid-state relay II; Controller and signal transfer trunk are that system signal is concentrated and shunted, and for motor, position transducer provide power supply, the I/O partitioned signal are processed, for motor provides control signal simultaneously.
Described transformer input voltage signal is alternating voltage 220V, and the d. c. voltage signal of output is divided into two-way, and one the tunnel is output DC 5V, 1A, and another road is output DC 27V, 15A, enters respectively the two-way rectifier filer; The rectifier filer on-position signal transducer of output DC 5V, 1A; The rectifier filer of output DC 27V, 15A accesses respectively solid-state relay I and solid-state relay II.
Described motor forward and backward signal is to provide by the I/O plate, adopts solid-state relay to switch, and disturbs to eliminate the contact of adopting common relay to bring; Solid-state relay also is divided into two kinds, i.e. solid-state relay I and solid-state relay II; Solid-state relay I receives signal A in the I/O plate, orders about the motor forward rotation; Solid-state relay II receives signal B in the I/O plate, orders about the motor backward rotation.
It is the above passage A/D plate of 12bit that thermocouple output signal and position sensor signal are selected precision, can count definite more than 1 according to port number or measurement, the dut temperature signal is by thermopair measuring point lead-in wire, adopt freezing point to carry out cold junction compensation, be directly connected to the A/D plate, take digital filtering to improve the precision of data acquisition, can directly draw the measuring point temperature value by demarcation and common engineering Conversion of measurement unit.
Described employing close-loop control mode is the processing controls process of carrying out during to the position sensor signal that receives, Motor Control signal, thermocouple output signal by computing machine.Measure beginning when starting, data recording deposit module is opened, and the record motor reel is at every turn by the angular coordinates value x and the forward rotation value x ' that set, when x ' ≠ x ± 0.4, return to adjustment, until x '=x ± 0.4 o'clock, enter next angular coordinates value 2x after finishing measurement; Needing according to measurement data also can backward rotation or random angle coordinate values nx rotation.
Compared with prior art, the invention has the beneficial effects as follows:
1. according to the requirement of fuel gas temperature field measurement point quantity, use wheelwork to measure channel cross-section blocked area≤1.5%;
2. adopt the rotating body component structure, strengthened the intensity of a thermometric sense pole, thereby the position degree that has guaranteed each thermometric sense pole has improved the accuracy of a thermometric sense pole position degree in ± 0.4 ° of scope.
3. a thermometric sense pole is adopted symmetrical structure, and the temperature value of each measurement point of rechecking can be arranged, and plays mutually check and correction effect of thermopair, has improved accuracy and the repeatability of temperature field measurement value.
4. temperature signal enters main frame by the sampling of A/D plate with the bus connection, reduces with the contact of relay switch and disturbs, and improves functional reliability;
5. select direct current motor as drive motor, add contactless relay, I/O plate, make control structure simple, good reliability, the deployed position sensor can be realized Real Time Monitoring.
Description of drawings:
Fig. 1 is a kind of temperature field wheel measuring apparatus system synoptic diagram.
1-measures acquisition component 2-driven unit 3-control system 4-position sensor signal
5-Motor Control signal 6-thermocouple output signal 7-gear train
Fig. 2 is that thermometric sense head is arranged synoptic diagram.
A 8-rotary body 9-thermometric sense pole 10-thermopair measuring point lead-in wire 11-rotary body transmission shaft
12-rotary body reinforcement
Fig. 3 is a thermometric sense synoptic diagram among Fig. 2
13-feels a pole mount pad 14-thermopair measuring point
Fig. 4 is the kinematic train synoptic diagram
15-motor 16-controller 17-motor shaft 18-main drive gear
19-transmission gear 20-position transducer 21-reduction gear
Fig. 5 is fuel gas temperature field wheel measuring schematic diagram of device
22-freezing point 23-signal transfer trunk 24-A/D plate 25-I/O plate 26-bus 27-computing machine
Fig. 6 is fuel gas temperature field wheel measuring device Electric Machine Control, drive principle figure
28-220V alternating current 29-transformer 30-direct current I 31-direct current II
32-rectifying and wave-filtering voltage stabilizer 33-solid-state relay I 34-solid-state relay II
35-signal A 36-signal B
Embodiment
Below by instantiation the present invention is further described.It is descriptive below implementing, and is not determinate, can not limit protection scope of the present invention with this.
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, a kind of temperature field wheel measuring device comprises data acquisition assembly 1, driven unit 2, control system 3; Wherein data acquisition assembly 1 comprises rotary body 8, a thermometric sense pole 9, thermopair measuring point 14, driven unit 2 comprises motor 15, gear train 7, and control system 3 comprises computing machine 27, A/D plate 24, I/O plate 25, controller 16, signal transfer trunk 23, position transducer 20, position sensor signal 4, Motor Control signal 5, thermocouple output signal 6.Gear train 7 comprises motor shaft 17, reduction gear 21, rotary body transmission shaft 11.Reduction gear 21 is a pair of conical reduction gearing at least, contains main drive gear 18, transmission gear 19, is installed in the gear case.Motor shaft 17 is connected with main drive gear 18, and the input end of rotary body transmission shaft 11 is connected with transmission gear 18.
Described rotary body 8 is a kind of annulars, is supported by rotary body reinforcement 12, and a thermometric sense pole 9 is fixedly mounted in the radial position of rotary body 8 outsides, and a thermometric sense pole 9 integral body stretch in the tested air-flow.Thermopair measuring point 14 orientations of a thermometric sense pole 9 are over against tested airflow direction.Rotary body transmission shaft 19 output terminals are connected to the center of rotary body reinforcement 12; Rotate by motor 15, drive main drive gear 18 and transmission gear 19 engagement gearing-down by motor shaft 17, make 8 rotations of rotary body transmission shaft 11 driven rotary bodies.
Temperature survey is carried out at the broach top that is fixedly mounted on respectively a thermometric sense pole 9 of described each thermopair measuring point 14, after thermopair measuring point lead-in wire 10 is drawn from a thermometric sense pole 9, be fixed on rotary body 8 and the rotary body reinforcement 12, the laggard center pit that enters rotary body transmission shaft 11 of boundling that divides into groups is drawn, connect freezing point 22 access signal transfer trunks 23, be connected on the A/D plate 24 with a bus 26, be connected with computing machine 27.
Described computing machine 27 is selected ordinary PC, utilizes PCI slot empty in the cabinet that A/D plate 24 and I/O plate 25 are installed, and adopts the universal programming technology to realize controlling measurement mechanism.
Described motor 15 is selected general direct current motor, position transducer 20 is installed on the motor shaft 17, position transducer 20 is provided with linkage with motor shaft 17, adopt close-loop control mode, the angle value that the position that is in showing of motor 15 and each position, front and back need to rotate is by the method for contrast, can eliminate accumulated error, position control accuracy reaches ± and 0.4 °; The angle value that target setting value and each position need to rotate can be realized the at any angle automatic measurement in temperature field in 360 °, realize the rotary angle position of Real Time Monitoring motor shaft 17,
Control motor start-up, the controller 16 that stops and signal transfer trunk 23 are installed in control box, and controller 16 comprises transformer 29, rectifying and wave-filtering voltage stabilizer 32, solid-state relay I33, solid-state relay II34; Controller 16 and signal transfer trunk 23 are that system signal is concentrated and shunted, and provide power supply for motor 15, position transducer 20 simultaneously; Signal A36 and signal B38 to I/O plate 25 process, for Motor Control signal 5 is provided.
Described transformer 29 input voltage signals are 220V alternating current 28, and the direct current of output is divided into two-way, and one the tunnel is that output DC I30 is 5V, 1A, and another road is that output DC II31 is 27V, 15A, enters respectively two-way rectifying and wave-filtering voltage stabilizer 32; On-position signal transducer 20 behind the 5V of output DC I30, the 1A process rectifying and wave-filtering voltage stabilizer 32; Access respectively solid-state relay I33 and solid-state relay II34 behind the 27V of output DC II31, the 15A process rectifying and wave-filtering voltage stabilizer 32.
The forward of described motor 15 and backward rotation signal provide by I/O plate 25, switch by solid-state relay I33 or solid-state relay II34, disturb to eliminate the contact of adopting common relay to bring; Solid-state relay I33 receives signal A35 in the I/O plate, orders about motor 15 forward rotation; Solid-state relay II34 receives signal B36 in the I/O plate, orders about motor 15 backward rotation.
It is the above passage A/D plate 24 of 12bit that thermocouple output signal 6 and position sensor signal 4 are selected precision, can count definite more than 1 according to port number or measurement.The dut temperature signal adopts freezing point 22 to carry out cold junction compensation by thermopair measuring point lead-in wire 10, is directly connected to A/D plate 24, takes digital filtering to improve accuracy of data acquisition, can directly draw the measuring point temperature value by demarcation and common engineering Conversion of measurement unit.
Described employing close-loop control mode is the processing controls process of being undertaken during by the position sensor signal 4 of 27 pairs of receptions of computing machine, Motor Control signal 5, thermocouple output signal 6.Measure beginning when starting, data recording deposit module is opened, record motor shaft 17 each angular coordinates value x and forward rotation value x ' by setting, when x ' ≠ x ± 0.4, return to adjustment, until x '=x ± 0.4 o'clock, enter next angular coordinates value 2x after finishing measurement; Need also can carry out backward rotation or random angle coordinate values nx rotation according to measurement data.
Claims (7)
1. a fuel gas temperature field wheel measuring device comprises data acquisition assembly (1), driven unit (2), control system (3); Wherein data acquisition assembly (1) comprises rotary body (8), measures a sense pole (9), thermopair measuring point (14), control system (3) comprises computing machine (27), A/D plate (24), I/O plate (25), controller (16), signal transfer trunk (23), position transducer (20), position sensor signal (4), Motor Control signal (5), thermocouple output signal (6), and driven unit (2) comprises motor (15), gear train (17); Described gear train (17) comprises motor shaft (17), reduction gear (21), rotary body transmission shaft (11); Reduction gear (21) is a pair of bevel gear at least, contains main drive gear (18), transmission gear (19), is installed in the gear case; Rotary body transmission shaft (11) output terminal is connected to the center of rotary body reinforcement (12); Motor shaft (17) is connected with main drive gear (17), the input end of rotary body transmission shaft (11) is connected with transmission gear (19), rotate by motor (15), drive main drive gear (18) and transmission gear (19) engagement gearing-down by motor shaft (17), make rotary body transmission shaft (11) driven rotary body (8) rotation; It is characterized in that: computing machine (27) is selected ordinary PC, utilizes PCI slot empty in the cabinet that A/D plate (24) and I/0 plate (25) are installed, and realizes controlling measurement mechanism; Motor (15) is selected general direct current motor, and position transducer (20) is installed on the motor shaft (17), and position transducer (20) is provided with linkage with motor shaft (17), adopts close-loop control mode; Control motor start-up, the controller (16) that stops and signal transfer trunk (23) are installed in control box.
2. fuel gas temperature according to claim 1 field wheel measuring device, it is characterized in that: controller (16) comprises transformer (29), rectifying and wave-filtering voltage stabilizer (32), solid-state relay I (33), solid-state relay II (34); Controller (16) and signal transfer trunk (23) are that system signal is concentrated and shunted, provide power supply for motor (15), position transducer (20) simultaneously, signal A (36) and signal B (38) to I/O plate (25) process, for Motor Control signal (5) is provided.
3. fuel gas temperature according to claim 1 and 2 field wheel measuring device, it is characterized in that: the forward of described motor (15) and backward rotation signal provide by I/O plate (25), switch by solid-state relay I (33) or solid-state relay II (34), disturb to eliminate the contact of adopting common relay to bring; Solid-state relay I (33) receives signal A (35) in the I/O plate, orders about motor (15) forward rotation; Solid-state relay II (34) receives signal B (36) in the I/O plate, orders about motor (15) backward rotation.
4. fuel gas temperature according to claim 1 field wheel measuring device, it is characterized in that: it is the above passage A/D plate (24) of 12bit that thermocouple output signal (6) and position sensor signal (4) are selected precision, can count definite more than 1 according to port number or measurement; The dut temperature signal is by thermopair measuring point lead-in wire (10), adopt freezing point (22) to carry out cold junction compensation, be directly connected to A/D plate (24), gather digital filtering to improve accuracy of data acquisition, can directly draw the measuring point temperature value by demarcation and common engineering Conversion of measurement unit.
5. fuel gas temperature according to claim 1 and 2 field wheel measuring device, it is characterized in that: described transformer (29) input voltage signal is the alternating current (28) of 220V, the direct current of output is divided into two-way, one the tunnel is that output DC I (30) is 5V, 1A, another road is that output DC II (31) is 27V, 15A, enters respectively two-way rectifying and wave-filtering voltage stabilizer (32); Output DC I (30) is through the rear on-position signal transducer (20) of rectifying and wave-filtering voltage stabilizer (32); Access respectively solid-state relay I (33) and solid-state relay II (34) behind 27V, the 15A process rectifying and wave-filtering voltage stabilizer (32) of output DC II (31).
6. fuel gas temperature according to claim 1 field wheel measuring device, it is characterized in that: the angle value that the position that the showing of described motor (15) is in and each position, front and back need to rotate is by the method for contrast, can eliminate accumulated error, position control accuracy reaches ± and 0.4 °; The angle value that target setting value and each position need to rotate can be realized the at any angle automatic measurement in temperature field in 360 °, realize the rotary angle position of Real Time Monitoring motor shaft (17).
7. fuel gas temperature according to claim 1 field wheel measuring device is characterized in that: described employing close-loop control mode is the processing controls process of carrying out during to the position sensor signal (4) that receives, Motor Control signal (5), thermocouple output signal (6) by computing machine (27); Measure beginning when starting, data recording deposit module is opened, and record motor shaft (17) is at every turn by the angular coordinates value x and the forward rotation value x ' that set, when x ' ≠ x ± 0.4, return to adjustment, until x '=x ± 0.4 o'clock, enter next angular coordinates value 2x after finishing measurement; Need also can carry out backward rotation or random angle coordinate values nx rotation according to measurement data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486073 CN202869684U (en) | 2012-09-14 | 2012-09-14 | Rotary measurement apparatus of combustion gas temperature field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486073 CN202869684U (en) | 2012-09-14 | 2012-09-14 | Rotary measurement apparatus of combustion gas temperature field |
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| Publication Number | Publication Date |
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| CN202869684U true CN202869684U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220486073 Expired - Lifetime CN202869684U (en) | 2012-09-14 | 2012-09-14 | Rotary measurement apparatus of combustion gas temperature field |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674306A (en) * | 2012-09-14 | 2014-03-26 | 贵航发动机设计研究所 | Rotating measurement device for fuel-gas temperature field |
| CN105229600A (en) * | 2013-01-04 | 2016-01-06 | 微软技术许可有限责任公司 | Capability-based device driver framework |
-
2012
- 2012-09-14 CN CN 201220486073 patent/CN202869684U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674306A (en) * | 2012-09-14 | 2014-03-26 | 贵航发动机设计研究所 | Rotating measurement device for fuel-gas temperature field |
| CN103674306B (en) * | 2012-09-14 | 2016-12-28 | 贵航发动机设计研究所 | A kind of fuel gas temperature field rotary measurement device |
| CN105229600A (en) * | 2013-01-04 | 2016-01-06 | 微软技术许可有限责任公司 | Capability-based device driver framework |
| CN105229600B (en) * | 2013-01-04 | 2019-07-05 | 微软技术许可有限责任公司 | Capability-based device driver frame |
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