CN112212982A - Calibration system of temperature measuring device for side wall of rotor of cylindrical rotating machine - Google Patents
Calibration system of temperature measuring device for side wall of rotor of cylindrical rotating machine Download PDFInfo
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- CN112212982A CN112212982A CN202011232422.3A CN202011232422A CN112212982A CN 112212982 A CN112212982 A CN 112212982A CN 202011232422 A CN202011232422 A CN 202011232422A CN 112212982 A CN112212982 A CN 112212982A
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- 238000009529 body temperature measurement Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 239000000523 sample Substances 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 230000005457 Black-body radiation Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
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Abstract
The invention discloses a calibration system of a temperature measuring device for the side wall of a rotor of a cylindrical rotating machine, which comprises a rotating machine test platform, an acquisition mechanism and a control mechanism, wherein the acquisition mechanism is connected with the control mechanism; the rotary machine test platform comprises a rotary machine, a black body emission source controller, an infrared temperature measurement sensor probe and a standard device, wherein the black body emission source and the black body emission source controller are connected with each other; the acquisition mechanism comprises an infrared temperature measuring device electrically connected with the probe of the infrared temperature measuring sensor and a signal isolation transmitter electrically connected with the standard device; the control mechanism comprises an industrial personal computer internally provided with a collection card and a communication card, the collection card is electrically connected with the signal isolation transmitter, and the communication card is electrically connected with the infrared temperature measuring device and the blackbody emission source controller. The invention meets the calibration requirement of the multi-path temperature measuring device on the premise of ensuring the integrity of the rotor of the rotary machine and not damaging the tightness of the rotor, can automatically calculate the calibrated fitting curve according to the calibration result, and has high precision of the calculated calibrated fitting curve.
Description
Technical Field
The invention belongs to a calibration system of a temperature measuring device, and particularly relates to a calibration system of a temperature measuring device of a side wall of a rotor of a cylindrical rotating machine.
Background
With the development of rotary machine development, the temperature distribution of the rotor side wall is found to have an important influence on the improvement of the rotary machine performance. However, at present, no relation between the thermodynamic state of the rotor and the performance of the rotating machine is established, which is not favorable for further improving the performance, and therefore, establishing the relationship between the temperature distribution of the rotor side wall of the rotating machine and the performance thereof becomes an important subject of the research of the rotating machine.
In the research process, because the tightness of the internal structure of the rotary machine must be ensured, the installation mode adopted by the measuring device for the temperature of the side wall of the rotor of the rotary machine can seriously affect the measurement accuracy of the measuring device, and the accuracy of the temperature measurement is a key problem affecting the whole subject, so that research on a calibration system of the measuring device for the temperature of the side wall of the rotor of the rotary machine on the premise of ensuring the integrity of the rotor of the rotary machine and not damaging the tightness is urgently needed.
Disclosure of Invention
The invention is provided for overcoming the defects in the prior art, and aims to provide a calibration system of a temperature measuring device of a rotor side wall of a cylindrical rotating machine.
The invention is realized by the following technical scheme:
a calibration system of a temperature measuring device for the side wall of a rotor of a cylindrical rotating machine comprises a rotating machine test platform, an acquisition mechanism and a control mechanism; the rotary machine test platform comprises a rotary machine, a black body emission source controller, an infrared temperature measurement sensor probe and a standard device, wherein the black body emission source and the black body emission source controller are connected with each other; the infrared temperature measuring sensor probe is arranged in an opening on an outer sleeve of the rotary machine; the standard device is attached to the inner wall of a rotor of the rotary machine; the black body emission source is arranged in a rotor of the rotating machine; the acquisition mechanism comprises an infrared temperature measuring device electrically connected with an infrared temperature measuring sensor probe and a signal isolation transmitter electrically connected with the standard device; the control mechanism comprises an industrial personal computer internally provided with a collection card and a communication card, the collection card is electrically connected with the signal isolation transmitter, and the communication card is electrically connected with the infrared temperature measuring device and the blackbody emission source controller.
In the technical scheme, the number of the infrared temperature measuring sensor probes is the same as that of the standard device, and the number of the infrared temperature measuring sensor probes is at least one.
In the above technical solution, when the plurality of infrared temperature measurement sensor probes and the plurality of standards are provided, the infrared temperature measurement sensor probes and the plurality of standards are distributed along the axial direction of the rotating machine.
In the technical scheme, the standard device is arranged at the minimum adjacent position of the intersection of the connecting line of the center of the infrared temperature measuring sensor probe and the center of the rotating machine and the rotor of the rotating machine.
In the above technical solution, an axis of the black body emission source coincides with a central axis of a rotor along the rotary machine.
In the technical scheme, the communication card is respectively connected with the infrared temperature measuring device and the blackbody emission source controller through two RS485 communication buses.
In the above technical scheme, the control mechanism further comprises a peripheral connected with the industrial personal computer, and the peripheral comprises a display, a mouse and a keyboard.
In the above technical solution, the control mechanism is disposed on the console.
In the technical scheme, the infrared temperature measuring device, the signal isolation transmitter and the blackbody radiation source controller are all arranged in the collection box; the top of the collection box is provided with a plurality of wire inlet and outlet holes; at least one electric fan is arranged in the collection box.
In the technical scheme, a grounding terminal, a 24V power supply and a plurality of circuit breakers are arranged in the collection box, and the 24V power supply supplies power for the signal isolation transmitter and the infrared temperature measuring device; the circuit breakers respectively control the on and off of a 220V AC main power supply, a black body controller power supply and a 24V power supply.
The invention has the beneficial effects that:
the invention provides a calibration system of a temperature measuring device on the side wall of a cylindrical rotating machine rotor, which realizes the temperature calibration of the temperature measuring device on the side wall of the sealed rotating machine rotor, meets the calibration requirement of a plurality of paths of temperature measuring devices on the premise of ensuring the integrity of the rotating machine rotor and not damaging the tightness of the rotating machine rotor, can automatically calculate a calibrated fitting curve according to the calibration result, has high precision of the calculated calibrated fitting curve, and has a range conforming to the general requirement of the rotating machine; the LabVIEW virtual instrument platform and the collection box are adopted to design the calibration system, so that the system is flexible to realize, strong in expandability and convenient for optimization and improvement of a temperature calibration strategy; the multi-path temperature calibration system adopting the framework can be popularized to other application fields, has strong applicability, and provides a better solution for the multi-path temperature calibration system.
Drawings
FIG. 1 is a schematic structural diagram of a calibration system of a temperature measuring device for a rotor side wall of a cylindrical rotating machine according to the present invention;
FIG. 2 is a schematic connection diagram of a tool control machine in the device for measuring the temperature of the side wall of the rotor of the cylindrical rotating machine according to the present invention;
FIG. 3 is a schematic diagram of the installation position of a standard device in the calibration system of the temperature measuring device for the rotor side wall of the cylindrical rotating machine according to the present invention;
FIG. 4 is a flowchart of the calibration operation of the calibration system of the temperature measuring device for the rotor side wall of the cylindrical rotating machine according to the present invention.
Wherein:
1 rotating machinery test platform
11 rotating machinery 12 infrared temperature measurement sensor probe
13 standard 14 blackbody emission source
15 blackbody emission source controller
2 acquisition mechanism
21 infrared temperature measuring device 22 signal isolation transmitter
23 collection box 24 fan
3 control mechanism
31 industrial control computer
311 acquisition card 312 communication card
32 operating table.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the calibration system of the device for measuring the temperature of the rotor sidewall of a cylindrical rotating machine according to the present invention are further described below by referring to the drawings of the specification and the specific embodiments.
Example 1
In order to determine the temperature distribution of the side wall of the rotor of the rotary machine, the temperature measuring device of the side wall of the rotor of the cylindrical rotary machine needs to be provided with a plurality of temperature measuring points in the axial direction of the side wall of the rotary machine, each temperature measuring point is provided with a temperature measuring device, and each temperature measuring device has an accuracy deviation of an useless degree when being installed in a closed manner, so that the temperature measuring device needs to be calibrated. The invention establishes a calibration model on the basis of a rotary mechanical test platform.
As shown in fig. 1 to 3, a calibration system of a cylindrical rotating machine rotor side wall temperature measurement device comprises a rotating machine test platform 1, an acquisition mechanism 2 and a control mechanism 3;
the rotary machine test platform 1 comprises a rotary machine 11, a black body emission source 14 and a black body emission source controller 15 which are connected with each other, and an infrared temperature measurement sensor probe 12 and a standard device 13 which are arranged on the rotary machine 11; the infrared temperature measuring sensor probe 12 is arranged in an opening on an outer sleeve of the rotary machine; the standard device 13 is attached to the inner wall of the rotor of the rotating machine 11; blackbody emitter 14 is centrally disposed within the rotor of rotary machine 11.
The rotary machine 11 is a test rotary machine, and comprises conventional mechanisms and components required for normal operation of the rotary machine;
the infrared temperature measuring sensor probe 12 directly carries out non-contact temperature measurement on the side wall of the rotor through a hole on the outer sleeve of the rotating machine.
The standard device 13 is a second-class standard platinum thermal resistance thermometer and is attached to the inner wall of the rotor to directly carry out contact type temperature measurement on the side wall of the rotor. The standard device 13 is arranged at the minimum adjacent position of the intersection of the connecting line of the center of the infrared temperature measurement sensor probe 12 and the center of the rotating machine 11 and the rotor of the rotating machine 11.
blackbody emission source controller 15 controls the temperature of blackbody radiation source 14 according to the calibration temperature zone and the temperature interval command sent by industrial personal computer 31.
In this embodiment, the number of the infrared temperature measurement sensor probes 12 and the number of the standards 13 are ten, and the ten infrared temperature measurement sensor probes 12 and the standards 13 are distributed in the axial direction of the rotary machine 11.
The acquisition mechanism 2 comprises an infrared temperature measuring device 21 electrically connected with the infrared temperature measuring sensor probe 12 and a signal isolation transmitter 22 electrically connected with the standard device 13;
the infrared temperature measuring device 21 is a Raitai MI3 infrared temperature measuring device which realizes the detection of the temperature of the side wall of the rotor, converts the detected temperature value into an analog signal of 0-10V, and then is connected with the communication board card through a cable to transmit the temperature data to the industrial personal computer.
The signal isolation transmitter 22 converts the temperature signal collected by the standard device 13 into a 0-10V analog signal, and finally transmits the 0-10V analog signal to the NI PCI 6343 acquisition card 311 installed on the industrial personal computer 31, so as to realize the acquisition of the standard reference temperature of the outer wall of the rotor of the rotary machine.
The infrared temperature measuring device, the signal isolation transmitter and the blackbody radiation source controller are all arranged in the collection box. A plurality of wire inlet and outlet holes are formed in the upper portion of the collecting box, so that signal and communication signal wires can conveniently penetrate in and out, and electric connection among components is achieved. The collecting box is also provided with at least one electric fan, and the electric fan radiates heat for the whole box body of the collecting box, so that safe and stable operation of devices in the collecting box is guaranteed. Two in the embodiment, and are arranged on the right side of the collection box.
The collecting box is also internally provided with a grounding terminal, a 24V power supply and a plurality of circuit breakers, wherein the circuit breakers are used for respectively controlling a 220V AC main power supply, a black body controller power supply and a 24V power supply; the 24V power supply is a bright weft power supply DR-120-24 and supplies power for the signal isolation transmitter and the infrared temperature measuring device. The circuit breaker is the power input switch and the protection device of the whole collection box.
The control mechanism 3 comprises an industrial personal computer 31 internally provided with an acquisition card 311 and a communication card 312, the acquisition card 311 is electrically connected with the signal isolation transmitter 22, and the communication card 312 is electrically connected with the infrared temperature measuring device 21 and the blackbody emission source controller 15. The control mechanism further comprises a peripheral connected with the industrial personal computer 31, and the peripheral comprises a display, a mouse and a keyboard. The control mechanism is provided on the console 32.
The industrial personal computer 31 is a porphyry industrial personal computer and is mainly used for realizing the core control function and the man-machine interaction function of the temperature calibration system, and comprises temperature calibration logic, a temperature calibration section, temperature interval input, temperature real-time display, temperature parameter storage and the like.
The acquisition card 311 is an NIPCI 6343 acquisition card, and is electrically connected with a signal isolation transmitter arranged in the acquisition box to realize the acquisition function of analog quantity signals.
The communication card 312 is a porphyry PCI 1602B communication board card, supports two RS485 communication buses, is connected with a bus black body controller, sends related instructions, and reads the state and parameters of a black body radiation source. The other bus is connected with 10 MI3 infrared temperature measuring devices and is responsible for reading temperature values; and the data communication function of the infrared temperature measuring device 21, the blackbody emitting source controller 15 and the industrial personal computer 31 is realized.
Example 2
Based on the embodiment 1, the calibration method of the cylindrical rotating machinery rotor side wall temperature measurement device specifically comprises the following steps (taking a multi-path temperature calibration with a plurality of infrared temperature measurement probes and a standard device as an example):
starting S1;
(ii) setting a system calibration temperature interval and interval according to operator input S2;
(iii) acquiring the current temperatures (T) of all the standards as a reference for judging the start-up S3;
(iv) comparing the temperature of the etalon with the set minimum value (Tmin) of the temperature interval, and returning to the step (iii) if the temperature in the etalon is greater than the minimum value of the temperature interval; if yes, go to step (v) S4;
(v) setting the temperature interval minimum to the target temperature (Ttag) S5;
(vi) sending a command to the blackbody controller to set the target temperature of the blackbody radiation source to be the current system target temperature S6;
s7: (vii) comparing the current temperature of the standard device with the target temperature, and if the target temperature is less than the temperature of the comparator, returning to the step (vi); if so, the process proceeds to step S8.
(viii) recording the current temperature of the standard device and the current temperature of the infrared sensor, and storing the current temperatures in a database S8;
(ix) comparing the current target temperature plus a target temperature interval (Δ T) with the set maximum temperature interval (Tmax). If less than or equal to, enter (x); if greater than enter (xi) S9;
(x) taking the current target temperature value as a new target temperature value by adding the calibration temperature interval, and returning to the step (vi) S10;
(xi) Judging whether the number of the standard devices of which the target values reach the maximum value of the set temperature interval reaches 10 or not, if not, returning to the step (vi); up to 10, go to step (xii) S11;
(xii) Taking out all the temperatures of the standard devices recorded in the database and the corresponding temperatures of the infrared sensors, and respectively calculating the calibration fitting curve output result S12 of each single standard device;
(xiii) Ending S13.
The design principle of the invention is as follows:
aiming at the technical characteristics of calibration of the temperature measuring device of the side wall of the rotor of the rotary machine, the invention establishes a single-path temperature calibration model on the axial end face of the rotor of the rotary machine, designs a multi-path temperature calibration structure, and formulates a multi-path temperature calibration strategy, thereby finally realizing the calibration of the temperature measuring device of the side wall of the rotor of the rotary machine.
The working process of the invention is as follows:
firstly, a blackbody radiation source is placed in the center inside a cylindrical rotating mechanical rotor, and a standard device is arranged near a measuring point of a measuring device on the side wall of the cylindrical rotating mechanical rotor; then, sequentially turning on power switches of the operation console and the collection box, waiting for the start of the system, and inputting a required calibration temperature section and a required temperature interval on a human-computer interaction interface of the operation console; and automatically controlling the blackbody radiation source to gradually increase the temperature, recording related data by the operating console, calculating a fitting curve after the acquisition is finished, and finally realizing the required temperature calibration.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The utility model provides a calibration system of tube-shape rotating machinery rotor lateral wall temperature-measuring device which characterized in that: comprises a rotary mechanical test platform (1), an acquisition mechanism (2) and a control mechanism (3);
the rotary machine test platform (1) comprises a rotary machine (11), a blackbody emission source (14) and a blackbody emission source controller (15) which are connected with each other, and an infrared temperature measurement sensor probe (12) and a standard device (13) which are arranged on the rotary machine (11); the infrared temperature measuring sensor probe (12) is arranged in an opening on an outer sleeve of the rotary machine; the standard device (13) is attached to the inner wall of the rotor of the rotating machine (11); the blackbody emission source (14) is arranged in a rotor of the rotating machine (11);
the acquisition mechanism (2) comprises an infrared temperature measuring device (21) electrically connected with the infrared temperature measuring sensor probe (12) and a signal isolation transmitter (22) electrically connected with the standard device (13);
the control mechanism (3) comprises an industrial personal computer (31) internally provided with an acquisition card (311) and a communication card (312), the acquisition card (311) is electrically connected with the signal isolation transmitter (22), and the communication card (312) is electrically connected with the infrared temperature measuring device (21) and the blackbody emission source controller (15).
2. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 1, wherein: the number of the infrared temperature measuring sensor probes (12) is the same as that of the standard devices (13), and the number of the infrared temperature measuring sensor probes is at least one.
3. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 2, wherein: when the infrared temperature measurement sensor probes (12) and the standard devices (13) are multiple, the infrared temperature measurement sensor probes (12) and the standard devices (13) are distributed along the axial direction of the rotating machine (11).
4. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 2, wherein: the standard device (13) is arranged at the minimum adjacent position of the intersection of the connecting line of the center of the infrared temperature measurement sensor probe (12) and the center of the rotating machine (11) and the rotor of the rotating machine (11).
5. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 1, wherein: the axis of the black body emission source (14) coincides with the central axis of the rotor along the rotating machine (11).
6. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 1, wherein: and the communication card (312) is respectively connected with the infrared temperature measuring device (21) and the blackbody emission source controller (15) through two RS485 communication buses.
7. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 1, wherein: the control mechanism further comprises a peripheral connected with the industrial personal computer (31), and the peripheral comprises a display, a mouse and a keyboard.
8. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 1, wherein: the control mechanism is arranged on the operating platform (32).
9. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 1, wherein: the infrared temperature measuring device (21), the signal isolation transmitter (22) and the blackbody radiation source controller (15) are all arranged in the collection box (23); the top of the collection box (23) is provided with a plurality of inlet and outlet wire holes; at least one electric fan (24) is arranged in the collection box (23).
10. The calibration system for the temperature measurement device of the side wall of the rotor of the cylindrical rotating machine according to claim 9, wherein: the collecting box (23) is internally provided with a grounding terminal, a 24V power supply and a plurality of circuit breakers, and the 24V power supply supplies power to the signal isolation transmitter (22) and the infrared temperature measuring device (21); the circuit breakers respectively control the on and off of a 220V AC main power supply, a black body controller power supply and a 24V power supply.
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| CN202011232422.3A CN112212982B (en) | 2020-11-06 | 2020-11-06 | Calibration system of cylindrical rotary machine rotor side wall temperature measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114353964A (en) * | 2022-03-21 | 2022-04-15 | 北矿智云科技(北京)有限公司 | Detection system and method for temperature of semi-autogenous mill barrel |
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| CN114353964A (en) * | 2022-03-21 | 2022-04-15 | 北矿智云科技(北京)有限公司 | Detection system and method for temperature of semi-autogenous mill barrel |
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