CN110849602A - Temperature and rotational speed adjustable high temperature rotating part dynamic experiment device - Google Patents
Temperature and rotational speed adjustable high temperature rotating part dynamic experiment device Download PDFInfo
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- CN110849602A CN110849602A CN201911042094.8A CN201911042094A CN110849602A CN 110849602 A CN110849602 A CN 110849602A CN 201911042094 A CN201911042094 A CN 201911042094A CN 110849602 A CN110849602 A CN 110849602A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a temperature and rotating speed adjustable dynamic experimental device for a high-temperature rotating part, which comprises an experimental box, a plurality of electric heating rods arranged in the experimental box, an experimental part installation shaft horizontally penetrating through the experimental box, a supporting seat for supporting the experimental part installation shaft and a driving shaft which is connected to one end of the experimental part installation shaft and is coaxial with the experimental part installation shaft; the upper wall of the experimental box is provided with a measuring probe, the side wall of the experimental box is provided with an external thermocouple, the lower end of the base of the experimental box is provided with a temperature controller, and the temperature controller is connected with an electric heating rod. According to the invention, the temperature in the experiment box is adjusted in real time through the PID temperature controller, the temperature in the experiment box is in the range of room temperature to 1500 ℃, the stability is +/-1 ℃, and the accurate control of the high-temperature environment temperature can be realized; the external high-speed variable frequency motor drives the rotating experimental part in the experimental box, and the rotating speed of the high-speed variable frequency motor is adjusted through the frequency converter, so that the accurate control of the rotating speed of 1000-15000 rpm can be ensured; and the dynamic experiment of the high-speed rotating part in a high-temperature environment is realized.
Description
Technical Field
The invention belongs to the technical field of dynamic experiments of hot end parts of aero-engines, and particularly relates to a dynamic experiment device for a high-temperature rotating part with adjustable temperature and rotating speed.
Background
In aircraft engines, the ambient temperature of the hot end components can typically reach above 1000 ℃, and deformation of the component structure can have a significant impact on mechanical efficiency and fuel consumption under high speed, high load operating conditions.
In order to obtain the influence rule of centrifugal load and thermal load on deformation of the rotating component through an experimental method, working conditions such as the ambient temperature (room temperature to 1500 ℃) and the rotating speed (0-15000 rpm) of the hot end component of the engine need to be simulated, and the temperature and the rotating speed can be accurately adjusted. Meanwhile, the device needs to have a structure in which an external measurement probe can be mounted. Currently, no such device provides the experimental conditions described above.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a dynamic experimental device for a high-temperature rotating part with adjustable temperature and rotating speed, and overcomes the defect that the prior art can not simulate working conditions such as the ambient temperature and the rotating speed of a hot-end part of an engine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dynamic experimental device for a high-temperature rotating component with adjustable temperature and rotating speed comprises an experimental box, a plurality of electric heating rods arranged in the experimental box, an experimental piece installation shaft horizontally penetrating through the experimental box, a supporting seat supporting the experimental piece installation shaft, and a driving shaft which is connected to one end of the experimental piece installation shaft and is coaxial with the experimental piece installation shaft, wherein the driving shaft is used for driving the experimental piece installation shaft to rotate;
the upper wall of the experimental box is provided with a measuring probe, the side wall of the experimental box is provided with an external thermocouple, the lower end of the base of the experimental box is provided with a temperature controller, and the temperature controller is connected with the electric heating rod.
The invention also comprises the following technical characteristics:
optionally, the plurality of electric heating rods are distributed on two sides of the experimental piece mounting shaft, and the tops of the electric heating rods are fixedly connected with the upper wall through a clamp;
the electric heating rod is a carbon-silicon heating rod, and a built-in thermocouple is arranged in the carbon-silicon heating rod.
Optionally, the electrical heating stick has eight, the both sides of experiment piece installation axle are equipped with four electrical heating sticks respectively, and are located four electrical heating sticks of experiment piece installation axle one side and are located the same vertical plane that is on a parallel with experiment piece installation axle.
Optionally, the experimental box comprises the upper wall, the two side walls and the base, and further comprises a front wall, a rear wall and an experimental cavity enclosed by the upper wall, the two side walls, the front wall, the rear wall and the base.
Optionally, a first through hole is formed in the upper wall, a measuring probe fixing seat is installed on the first through hole, and the measuring probe fixing seat is used for fixedly installing the measuring probe;
a second through hole is formed in one side wall, an external thermocouple fixing seat is mounted on the second through hole, and the external thermocouple fixing seat is used for fixedly mounting the external thermocouple;
the two side walls are provided with a third through hole and a fourth through hole which are opposite to each other, the experimental piece mounting shafts are perpendicular to the two side walls and penetrate through the third through hole and the fourth through hole, and the supporting seat is arranged at the end part of the experimental piece mounting shafts positioned at the two sides of the experimental box.
Optionally, the first through hole is located right above the experimental piece mounting shaft; the second through hole is located right above the fourth through hole, and the distance between the second through hole and the fourth through hole is 2-3 cm.
Optionally, the measurement probe comprises a fiber optic probe, a capacitance probe, a microwave probe, or an inductance probe; other types of sensor probes may also be included.
Optionally, an experimental piece is mounted on the experimental piece mounting shaft and located right below the measuring probe.
Optionally, the experimental piece mounting shaft is mounted on the supporting seat through a supporting ring sleeved on the experimental piece mounting shaft; the end part of the experimental piece mounting shaft is connected with the driving shaft through a coupling; the driving shaft is connected with a high-speed variable frequency motor.
Optionally, a panel of the temperature controller is provided with a switch button, a temperature adjusting button and a temperature display screen; and a heat insulation layer is arranged between the electric heating rod and the side wall, the front wall and the rear wall of the experiment box, so as to play a role in heat insulation.
Compared with the prior art, the invention has the beneficial technical effects that:
according to the invention, (I) the temperature in the experiment box is adjusted in real time by the PID temperature controller, the temperature in the experiment box is within the range of room temperature to 1500 ℃, the stability is +/-1 ℃, the accurate control of the high-temperature environment temperature can be realized, and the temperature distribution of the experiment piece is more uniform when the whole experiment piece is at the experiment environment temperature.
According to the invention, (II) the external high-speed variable frequency motor drives the rotating experiment piece in the experiment box, and the rotating speed of the high-speed variable frequency motor is adjusted by the frequency converter, so that the accurate control of the rotating speed of 1000-15000 rpm can be ensured.
And (III) the high-speed rotating part dynamic experiment under the high-temperature environment is realized by penetrating the experimental part mounting shaft and the experimental part in the experimental box.
According to the invention, through the designed measuring probe fixing seat and the external thermocouple fixing seat, an external measuring sensor is convenient to install, and the measurement of a rotating experimental part and the temperature monitoring in an experimental box are realized.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the present invention with the front, rear and top walls removed;
the reference numerals in the figures denote: 1-an experiment box, 2-an electric heating rod, 3-an experiment piece mounting shaft, 4-a supporting seat, 5-a driving shaft, 6-a temperature controller, 7-an experiment piece and 8-a supporting ring;
11-upper wall, 12-side wall, 13-base, 14-experimental cavity;
111-a measuring probe fixing seat, 121-an external thermocouple fixing seat, 122-a third through hole and 123-a fourth through hole.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example 1:
the embodiment provides a dynamic experimental device for a high-temperature rotating part with adjustable temperature and rotating speed, which comprises an experimental box 1, a plurality of electric heating rods 2 arranged in the experimental box 1, an experimental part mounting shaft 3 horizontally penetrating through the experimental box 1, a supporting seat 4 for supporting the experimental part mounting shaft 3, and a driving shaft 5 connected to one end of the experimental part mounting shaft 3 and coaxial with the experimental part mounting shaft 3, wherein the driving shaft 5 is used for driving the experimental part mounting shaft 3 to rotate; the upper wall 11 of the experimental box 1 is provided with a measuring probe, the side wall 12 of the experimental box 1 is provided with an external thermocouple, the lower end of the base 13 of the experimental box 1 is provided with a temperature controller 6, and the temperature controller 6 is connected with the electric heating rod 2. In the invention, the temperature controller 6 is internally connected with the electric heating rod 2 through a logic circuit and is used for PID temperature control, the temperature in the experiment box is regulated in real time through the PID temperature controller, the temperature in the experiment box is in the range of room temperature to 1500 ℃, the stability is +/-1 ℃, and the accurate control of the high-temperature environment temperature can be realized; the external high-speed variable frequency motor drives the rotating experimental part in the experimental box, and the rotating speed of the high-speed variable frequency motor is adjusted through the frequency converter, so that the accurate control of the rotating speed of 1000-15000 rpm can be ensured; the dynamic experiment of the high-speed rotating part in a high-temperature environment is realized by penetrating an experimental part mounting shaft and the experimental part in an experimental box; through the measuring probe fixing base and the external thermocouple fixing base of design, be convenient for install external measuring transducer, realize the measurement of pair of rotation experiment piece and the temperature monitoring in the experiment case.
In the embodiment, a plurality of electric heating rods 2 are distributed on two sides of an experimental piece mounting shaft 3, the tops of the electric heating rods 2 are fixedly connected with an upper wall 11 through a clamp, and the inside of an experimental box 1 is heated through the electric heating rods 2 so as to achieve the working condition of simulating the ambient temperature of a hot end part of an engine; the electric heating rod 2 is a carbon-silicon heating rod, the highest heating environment temperature can reach 1500 ℃, a built-in thermocouple is arranged in the carbon-silicon heating rod, the temperature measured by the built-in thermocouple is used as a PID control circuit feedback signal, the accurate control of the heating temperature can be realized, and the control precision can reach +/-1 ℃.
Specifically, electrical heating rod 2 in this embodiment has eight, and the both sides of experiment piece installation axle 3 are equipped with four electrical heating rod 2 respectively, and are located four electrical heating rod 2 of experiment piece installation axle 3 one side and are located the same vertical plane that is on a parallel with experiment piece installation axle 3 for realize the even heating to experiment piece 7.
The experimental box 1 comprises an upper wall 11, two side walls 12 and a base 13, and further comprises a front wall, a rear wall and an experimental cavity 14 enclosed by the upper wall 11, the two side walls 12, the front wall, the rear wall and the base 13, and is used for simulating working conditions such as the ambient temperature and the rotating speed of a hot end component of an engine in the experimental box 1. In the present embodiment, the inner wall of the sidewall 12 is designed to be a frustum pyramid shape, which is an inner structure of the furnace door, and is integrated with the furnace door to function as a high-temperature seal when the furnace is operated.
Specifically, the upper wall 11 is provided with a first through hole, the first through hole is provided with a measuring probe fixing seat 111, the measuring probe fixing seat 111 is used for fixedly mounting a measuring probe, and in other embodiments, the size of the measuring probe fixing seat 111 can be changed and adjusted according to the size of different measuring probes so as to adapt to different types of measurement applications; a second through hole is formed in one side wall 12, an external thermocouple fixing seat 121 is installed on the second through hole, and the external thermocouple fixing seat 121 is used for fixedly installing an external thermocouple so that the external thermocouple can accurately monitor and calibrate the temperature in the experimental cavity; the two side walls 12 are provided with a third through hole 122 and a fourth through hole 123 which are opposite to each other, the experimental piece mounting shaft 3 is perpendicular to the two side walls 12 and penetrates through the third through hole 122 and the fourth through hole 123, and the end parts of the experimental piece mounting shafts 3 positioned at the two sides of the experimental box 1 are provided with supporting seats 4.
The first through hole is positioned right above the experimental part mounting shaft 3; the second through hole is located right above the fourth through hole 123, and the distance between the second through hole and the fourth through hole 123 is 2-3 cm, so that the external thermocouple installed in the second through hole can accurately monitor and calibrate the temperature in the experimental cavity.
The measuring probe comprises a fiber optic probe, a capacitance probe, a microwave probe or an inductance probe, and can also comprise other types of sensor probes to adapt to different types of measuring applications.
Install the experiment piece 7 on the experiment piece installation axle 3, experiment piece 7 is located measurement probe under, and in this embodiment, experiment piece 7 can be turbine rotor model, compressor model or other rotor models.
The experimental piece mounting shaft 3 is arranged on the supporting seat 4 through a supporting ring 8 sleeved on the experimental piece mounting shaft 3; the end part of the experimental part mounting shaft 3 is connected with a driving shaft 5 through a coupler; the driving shaft 5 is connected with a high-speed variable frequency motor, the rotating speed of the high-speed variable frequency motor can be steplessly adjusted through a knob of a frequency converter, and the rotating speed can reach 15000 rpm; in other embodiments, the adjusting drive shaft 5 and the high-speed variable frequency motor can be replaced according to the load requirements of different experimental pieces 7.
A panel of the temperature controller 6 is provided with a switch button, a temperature adjusting button and a temperature display screen for regulating and controlling temperature; and a heat insulation layer is arranged between the electric heating rod 1 and the side wall, the front wall and the rear wall of the experimental box 1 to play a role in heat insulation.
The working process of the invention is as follows:
when the device is used, the heating is started through a switch button of the temperature controller, a heating program is started after a heating curve (time-temperature corresponding relation) is set on a panel of the temperature controller, the temperature in the furnace is heated according to the set curve, and the heating process can be suspended or stopped at any time; turning on a switch of the high-speed variable frequency motor, adjusting the rotating speed of the high-speed variable frequency motor through a knob of a frequency converter, and driving a driving shaft of the high-speed variable frequency motor to drive the installation shaft of the experimental piece to rotate to a required rotating speed; and dynamically measuring the experimental piece by an external measuring probe to obtain a required experimental measurement result.
Claims (10)
1. The dynamic experimental device for the high-temperature rotating component with adjustable temperature and rotating speed is characterized by comprising an experimental box (1), a plurality of electric heating rods (2) arranged in the experimental box (1), an experimental piece mounting shaft (3) horizontally penetrating through the experimental box (1), a supporting seat (4) supporting the experimental piece mounting shaft (3) and a driving shaft (5) which is connected to one end of the experimental piece mounting shaft (3) and is coaxial with the experimental piece mounting shaft (3), wherein the driving shaft (5) is used for driving the experimental piece mounting shaft (3) to rotate;
install measuring probe on upper wall (11) of experimental box (1), install external thermocouple on lateral wall (12) of experimental box (1), base (13) lower extreme of experimental box (1) is equipped with temperature controller (6), temperature controller (6) are connected electrical heating rod (2).
2. The dynamic experimental device for the high-temperature rotating component with adjustable temperature and rotating speed as claimed in claim 1, wherein the plurality of electric heating rods (2) are distributed on two sides of the experimental component mounting shaft (3), and the tops of the electric heating rods (2) are fixedly connected with the upper wall (11) through a clamp;
the electric heating rod (2) is a carbon-silicon heating rod.
3. The dynamic experimental device for the high-temperature rotating component with adjustable temperature and rotation speed according to claim 2, characterized in that the number of the electric heating rods (2) is eight, four electric heating rods (2) are respectively arranged on two sides of the experimental member mounting shaft (3), and the four electric heating rods (2) on one side of the experimental member mounting shaft (3) are located in the same vertical plane parallel to the experimental member mounting shaft (3).
4. The dynamic experimental apparatus for high temperature rotary components with adjustable temperature and rotation speed according to claim 1, wherein the experimental box (1) comprises the upper wall (11), two side walls (12) and the base (13), and further comprises a front wall, a rear wall and an experimental cavity (14) enclosed by the upper wall (11), the two side walls (12), the front wall, the rear wall and the base (13).
5. The dynamic experimental device for the high-temperature rotating component with adjustable temperature and rotating speed as claimed in claim 4, wherein the upper wall (11) is provided with a first through hole, the first through hole is provided with a measuring probe fixing seat (111), and the measuring probe fixing seat (111) is used for fixedly mounting the measuring probe;
a second through hole is formed in one side wall (12), an external thermocouple fixing seat (121) is installed on the second through hole, and the external thermocouple fixing seat (121) is used for fixedly installing the external thermocouple;
be equipped with relative third through-hole (122) and fourth through-hole (123) on two lateral walls (12), experimental piece installation axle (3) perpendicular to two lateral walls (12) and pass third through-hole (122) and fourth through-hole (123) to be equipped with at the tip of experimental piece installation axle (3) that is located experimental box (1) both sides supporting seat (4).
6. The temperature and rotation speed adjustable high-temperature rotating component dynamic experimental device as claimed in claim 5, wherein the first through hole is located right above the experimental component mounting shaft (3); the second through hole is located right above the fourth through hole (123), and the distance between the second through hole and the fourth through hole (123) is 2-3 cm.
7. The temperature and rotation speed adjustable high-temperature rotating component dynamic experimental device as claimed in claim 1, wherein the measuring probe comprises a fiber optic probe, a capacitance probe, a microwave probe or an inductance probe.
8. The dynamic experimental device for the high-temperature rotating component with adjustable temperature and rotating speed as claimed in claim 1, wherein the experimental piece mounting shaft (3) is provided with an experimental piece (7), and the experimental piece (7) is positioned right below the measuring probe.
9. The temperature and rotation speed adjustable high-temperature rotating component dynamic experimental device as claimed in claim 1, wherein the experimental member mounting shaft (3) is mounted on the supporting seat (4) through a supporting ring (8) sleeved on the experimental member mounting shaft (3); the end part of the experimental piece mounting shaft (3) is connected with the driving shaft (5) through a coupling; the driving shaft (5) is connected with a high-speed variable frequency motor.
10. The dynamic experimental device for the high-temperature rotating component with adjustable temperature and rotating speed as claimed in claim 1, wherein a panel of the temperature controller (6) is provided with a switch button, a temperature adjusting button and a temperature display screen; and heat insulation layers are arranged between the electric heating rod (1) and the side wall, the front wall and the rear wall of the experimental box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911042094.8A CN110849602A (en) | 2019-10-30 | 2019-10-30 | Temperature and rotational speed adjustable high temperature rotating part dynamic experiment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911042094.8A CN110849602A (en) | 2019-10-30 | 2019-10-30 | Temperature and rotational speed adjustable high temperature rotating part dynamic experiment device |
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| CN110849602A true CN110849602A (en) | 2020-02-28 |
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| CN201911042094.8A Pending CN110849602A (en) | 2019-10-30 | 2019-10-30 | Temperature and rotational speed adjustable high temperature rotating part dynamic experiment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040354A1 (en) * | 2021-09-16 | 2023-03-23 | 青岛海尔生物医疗科技有限公司 | Method and apparatus for temperature control of centrifuge, centrifuge and storage medium |
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| CN209470878U (en) * | 2018-12-05 | 2019-10-08 | 朱梓傲 | A kind of reliability test of aeroplane engine main bearing |
| CN110333052A (en) * | 2019-04-10 | 2019-10-15 | 武汉理工大学 | High Temperature Rotating unit test platform |
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2019
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886978A (en) * | 2010-07-07 | 2010-11-17 | 四川大学 | Vacuum high/low temperature environmental simulation electromechanical transmission mechanism comprehensive performance experimental system |
| CN205785814U (en) * | 2016-05-27 | 2016-12-07 | 中航商用航空发动机有限责任公司 | The reliability test of aeroplane engine main bearing |
| CN206876396U (en) * | 2017-05-11 | 2018-01-12 | 浙江省机电设计研究院有限公司 | Sealed bearings combination property simulation test machine |
| CN209470878U (en) * | 2018-12-05 | 2019-10-08 | 朱梓傲 | A kind of reliability test of aeroplane engine main bearing |
| CN109839273A (en) * | 2019-04-09 | 2019-06-04 | 中国航空综合技术研究所 | Rod end bearing limiting temperature test fixture and its test method |
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Application publication date: 20200228 |