CN210119345U - Thermal bending fault experimental device applied to rotating machinery - Google Patents
Thermal bending fault experimental device applied to rotating machinery Download PDFInfo
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- CN210119345U CN210119345U CN201921470748.2U CN201921470748U CN210119345U CN 210119345 U CN210119345 U CN 210119345U CN 201921470748 U CN201921470748 U CN 201921470748U CN 210119345 U CN210119345 U CN 210119345U
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Abstract
The utility model provides a be applied to rotating machinery's crooked trouble experiment device of heat, belongs to the crooked trouble experiment technical field of rotor heat, the utility model discloses a solve the problem that traditional experimental apparatus can't simulate the crooked trouble experiment of rotor system heat. The output of motor is connected with the input of gear box, and the output of gear box links to each other with the one end of pivot, and the both ends of pivot all support through slide bearing, and the rotor setting is in the pivot, and the rotor outside is equipped with the heating device with rotor appearance matched with, and one side that two slide bearings are close to the rotor all is equipped with eddy current displacement sensor group, and eddy current displacement sensor group is used for measuring the displacement of pivot or rotor. The utility model discloses a be applied to rotating machinery's crooked trouble experimental apparatus of heat can simulate the rotor and be heated the inflation, takes place the crooked trouble of heat to data to in the experimentation are gathered.
Description
Technical Field
The utility model relates to a crooked trouble experimental apparatus of heat especially relates to a be applied to rotatory machinery crooked trouble experimental apparatus of heat.
Background
The complex thermal environment in the working process of the gas turbine has important influence on the deformation and vibration characteristics of the whole machine structure, in particular to the thermal bending phenomenon of the rotor system in the shutdown cooling process. In the shutdown cooling process, buoyancy convective heat transfer phenomenon occurs inside the gas turbine, so that an upper and lower temperature difference environment is formed, and further, the rotor system is uneven in circumferential thermal expansion and generates thermal bending deformation. The vibration characteristics of the rotor system change as the thermal bending deformation changes the mass distribution of the rotor system. The hot bending fault is a common fault in the process of development and operation, and causes the attention of foreign engine development units; and the traditional experimental device can not simulate the thermal bending fault experiment of the rotor system. Therefore, the development of the thermal bending fault experiment is necessary in the design, production and manufacturing processes.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be applied to rotating machinery's hot bending fault experimental apparatus to solve the problem that traditional experimental apparatus can't simulate rotor system hot bending fault experiment.
A thermal bending fault experimental device applied to rotary machinery comprises a motor, a gear box, a rotating shaft, a sliding bearing, a rotor, a heating device and an eddy current displacement sensor group;
the output of motor is connected with the input of gear box, and the output of gear box links to each other with the one end of pivot, and the both ends of pivot all support through slide bearing, and the rotor setting is in the pivot, and the rotor outside is equipped with the heating device with rotor appearance matched with, and one side that two slide bearings are close to the rotor all is equipped with eddy current displacement sensor group, and eddy current displacement sensor group is used for measuring the displacement of pivot or rotor.
Preferably: the heating device comprises an upper sleeve, a lower sleeve, a heat insulation layer, a heating tile, a thermocouple and a support;
the upper sleeve and the lower sleeve are connected to form a cylinder with two open ends, the cylinder is supported by the support, the cylinder is lined with a heat insulation layer, the inner wall of the heat insulation layer is regular octagon, heating tiles are arranged on the inner wall of the heat insulation layer at equal intervals, and thermocouples are arranged on the outer surface of the rotor at equal intervals.
Preferably: the eddy current displacement sensor group comprises a horizontal eddy current displacement sensor and a vertical eddy current displacement sensor which are distributed at 90 degrees.
Preferably: the motor is provided with a frequency converter, and energy conservation and speed regulation are realized through the frequency converter.
Preferably: the eddy current displacement sensor group is connected with the industrial personal computer through an electric lead, and a sensor interface box is arranged between the industrial personal computer and the eddy current displacement sensor group.
The utility model discloses compare with current product and have following effect:
the heating device can simulate the thermal bending fault of the rotor, and the eddy current displacement sensor is used for testing the displacement in the x direction and the y direction respectively, so that the vibration characteristic of the thermal bending state of the rotor can be obtained.
The heating device can be communicated to heat different areas of the rotor, axial temperature difference control is achieved, and circumferential temperature difference control of the rotor is achieved by adjusting the temperature of the heating tiles on different edges of the octagon inside the heating device.
Drawings
Fig. 1 is a schematic structural diagram of a thermal bending fault experimental apparatus applied to a rotary machine according to the present invention;
FIG. 2 is a front view of the heating device;
fig. 3 is a side view of fig. 2.
In the figure: 1-motor, 2-gear box, 3-rotating shaft, 4-sliding bearing, 5-rotor, 6-heating device, 7-industrial personal computer, 8-sensor interface box, 9-eddy displacement sensor group, 10-upper sleeve, 11-lower sleeve, 12-heat insulation layer, 13-heating tile, 14-thermocouple, 15-support, 16-frequency converter and 17-lubricating oil system.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 3, the thermal bending fault testing apparatus applied to a rotary machine disclosed in this embodiment includes a motor 1, a gear box 2, a rotating shaft 3, a sliding bearing 4, a rotor 5, a heating device 6, and an eddy current displacement sensor group 9;
the output of motor 1 is connected with gear box 2's input, gear box 2's output links to each other with the one end of pivot 3, the both ends of pivot 3 all support through slide bearing 4, rotor 5 sets up in pivot 3, 5 outsides of rotor are equipped with the heating device 6 with 5 appearance matched with of rotor, one side that two slide bearings 4 are close to the rotor all is equipped with vortex displacement sensor group 9, vortex displacement sensor group 9 is used for measuring the displacement of pivot 3 or rotor 5, still include lubricating oil system 17, lubricating oil system 17 provides lubrication and cooling for experimental apparatus, the gear box is used for the acceleration rate, the acceleration rate ratio should reach more than 10.
Further: the heating device 6 comprises an upper sleeve 10, a lower sleeve 11, a heat insulation layer 12, a heating tile 13, a thermocouple 14 and a support 15;
the upper sleeve 10 and the lower sleeve 11 are connected to form a cylinder with two open ends, the cylinder is supported by a support 15, a heat insulation layer 12 is lined in the cylinder, the inner wall of the heat insulation layer 12 is regular octagon, heating tiles 13 are arranged on the inner wall of the heat insulation layer 12 at equal intervals, thermocouples 14 are arranged on the outer surface of the rotor 5 at equal intervals, the thermocouples are temperature measuring elements commonly used in temperature measuring instruments, directly measure the temperature, convert temperature signals into thermal electromotive force signals, and convert the thermal electromotive force signals into the temperature of a measured medium through an electric instrument (a secondary instrument). Thermocouples were uniformly placed on the axial and axial surfaces of the test rotor to test the axial and circumferential temperature differences of the rotor surfaces during the test.
The heating device can be divided into A, B, C different areas along the axial direction, and the different areas are set with different temperatures, so that the axial temperature difference control is realized. The circumferential temperature difference control of the rotor is realized by adjusting different temperatures of the octagonal heating tiles inside.
Further: the eddy current displacement sensor group 9 is a horizontal eddy current displacement sensor and a vertical eddy current displacement sensor which are distributed at 90 degrees, and respectively tests displacements in x and y directions, namely the vibration characteristics of the rotor in a thermal bending state.
Further: the motor 1 is provided with a frequency converter 16, energy is saved and speed is adjusted through the frequency converter 16, the frequency converter 16 is used for adjusting the voltage and frequency of an output power supply, the required power supply voltage is provided according to the actual requirement of the motor, and the purposes of energy saving and speed adjustment are further achieved.
Further: the eddy current displacement sensor group 9 is connected with the industrial personal computer 7 through an electric lead, a sensor interface box 8 is arranged between the industrial personal computer 7 and the eddy current displacement sensor group 9, and the sensor interface box 8 is a signal amplifier or a signal amplifying circuit.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (5)
1. The utility model provides a be applied to rotating machinery's hot bending fault experimental apparatus which characterized in that: comprises a motor (1), a gear box (2), a rotating shaft (3), a sliding bearing (4), a rotor (5), a heating device (6) and an eddy current displacement sensor group (9);
the output of motor (1) is connected with the input of gear box (2), the output of gear box (2) links to each other with the one end of pivot (3), the both ends of pivot (3) all support through slide bearing (4), rotor (5) set up on pivot (3), rotor (5) outside is equipped with heating device (6) with rotor (5) appearance matched with, one side that two slide bearings (4) are close to the rotor all is equipped with eddy current displacement sensor group (9), eddy current displacement sensor group (9) are used for measuring the displacement of pivot (3) or rotor (5).
2. The thermal bending fault experimental device applied to the rotary machine according to claim 1, wherein: the heating device (6) comprises an upper sleeve (10), a lower sleeve (11), a heat insulation layer (12), a heating tile (13), a thermocouple (14) and a support (15);
the upper sleeve (10) and the lower sleeve (11) are connected to form a cylinder with two open ends, the cylinder is supported by a support (15), a heat insulation layer (12) is lined in the cylinder, the inner wall of the heat insulation layer (12) is in a regular octagon shape, heating tiles (13) are arranged on the inner wall of the heat insulation layer (12) at equal intervals, and thermocouples (14) are arranged on the outer surface of the rotor (5) at equal intervals.
3. A thermal bend failure testing apparatus applied to a rotary machine according to claim 1 or 2, wherein: the vortex displacement sensor group (9) is a horizontal vortex displacement sensor and a vertical vortex displacement sensor which are distributed at 90 degrees.
4. A thermal bend failure testing apparatus applied to a rotary machine according to claim 1 or 2, wherein: the motor (1) is provided with a frequency converter (16), and energy conservation and speed regulation are realized through the frequency converter (16).
5. The thermal bending fault experimental device applied to the rotary machine according to claim 3, wherein: the vortex displacement sensor group (9) is connected with an industrial personal computer (7) through an electric lead, and a sensor interface box (8) is arranged between the industrial personal computer (7) and the vortex displacement sensor group (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470748.2U CN210119345U (en) | 2019-09-05 | 2019-09-05 | Thermal bending fault experimental device applied to rotating machinery |
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| CN201921470748.2U CN210119345U (en) | 2019-09-05 | 2019-09-05 | Thermal bending fault experimental device applied to rotating machinery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358386A (en) * | 2021-05-31 | 2021-09-07 | 扬州大学 | Variable temperature field loading and detecting system for rotary machine |
| CN113738458A (en) * | 2020-05-29 | 2021-12-03 | 中国航发商用航空发动机有限责任公司 | Gas turbine, device for preventing rotor from thermal bending and prime mover thereof |
-
2019
- 2019-09-05 CN CN201921470748.2U patent/CN210119345U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738458A (en) * | 2020-05-29 | 2021-12-03 | 中国航发商用航空发动机有限责任公司 | Gas turbine, device for preventing rotor from thermal bending and prime mover thereof |
| CN113738458B (en) * | 2020-05-29 | 2023-09-29 | 中国航发商用航空发动机有限责任公司 | Gas turbine, rotor heat bending prevention device and driving device thereof |
| CN113358386A (en) * | 2021-05-31 | 2021-09-07 | 扬州大学 | Variable temperature field loading and detecting system for rotary machine |
| CN113358386B (en) * | 2021-05-31 | 2023-09-29 | 扬州大学 | Variable temperature field loading and detecting system for rotary machinery |
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