CN208672174U - A kind of experimental provision of pair of turntable chamber turntable wall surface temperature measurement - Google Patents
A kind of experimental provision of pair of turntable chamber turntable wall surface temperature measurement Download PDFInfo
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- CN208672174U CN208672174U CN201821139295.0U CN201821139295U CN208672174U CN 208672174 U CN208672174 U CN 208672174U CN 201821139295 U CN201821139295 U CN 201821139295U CN 208672174 U CN208672174 U CN 208672174U
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Abstract
The utility model discloses the experimental provisions of a kind of pair of turntable chamber turntable wall surface temperature measurement, belong to aviation experimental provision technical field.The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, upstream disk and the sealing of outer screen are connected, and downstream disk and outer screen have outlet annular space；The outer wall of upstream disk has the first heat insulation layer, and the outer wall of upstream disk connects the first hollow shaft, the first hollow axis connection gas supply mechanism, and upstream disk can be rotated about the axis thereof by the first driving mechanism；The circumferential wall of downstream disk has heating element, the outer wall of downstream disk is embedded with multiple temperature sensors, the outer wall of downstream disk has the second heat insulation layer, there are commutator transformer, wireless temperature acquisition module on the outside of second heat insulation layer, the wireless signal transfer that the temperature signal of temperature sensor detection is issued by wireless temperature acquisition module is to receiving end.The utility model simplifies the temperature measurement structure measured turntable chamber wall surface temperature, and improves thermometric accuracy.
Description
Technical field
The utility model relates to the experimental provisions of a kind of pair of turntable chamber turntable wall surface temperature measurement, belong to aviation experimental provision
Technical field.
Background technique
Counter rotating turbine is the turbine structure that hiigh pressure stage turbine rotor and lower pressure stage turbine rotor reversely rotate.In aircraft gas
Counter rotating turbine structure is used in turbogenerator, and the gyro on rotor is acted on when on the one hand aircraft can be made to do maneuvering flight
Torque obtains counteracting largely, and then reduces the outer torque passed on airframe；On the other hand, relative to conventional whirlpool
Wheel, the low pressure guide vane turning angle and consistency of counter rotating turbine reduce, thus improve the pneumatic efficiency of engine entirety.Counter rotating turbine
Have become one of the forward position research direction of high-performance gas turbine technology development.
Turntable, rotary shaft and outer screen are formd to turntable chamber.For cooling down the turbine disk and seal disc chamber to prevent
It is flowed between the turbine disk that the air that combustion gas is flowed backward is reversely rotated at two, which forms ask the intracavitary flowing of turntable and heat exchange
Topic.The pressure-air that the turbine cooling of aero-engine generally uses blower outlet or intergrade to draw is as cooling medium.
Air conditioning quantity is very few to be sufficiently cooled the turbine disk；And air conditioning quantity excessively can then reduce the performance of engine.Therefore it mentions
High cooling air-flow is particularly important in the intracavitary cooling efficiency of the turbine disk.The most direct evaluation index of cooling efficiency is exactly to reflect turntable
The turntable bulk temperature of every intensity and the turntable radial temperature difference of reflection turntable thermal stress size.Therefore, it is necessary to measure to turntable
Chamber wall surface temperature.
Because of high speed rotation and high temperature operating conditions, the acquisition of temperature data in the wall surface temperature test of counter rotating turbine disk chamber
It is extremely difficult.Therefore there is the technical staff of this field to devise relevant experimental rig, measure difference in the case of unstable state
Disk wall surface temperature is reversely rotated under cold air flow and different rotating speeds.For the experimental rig, all measurements are to turntable wall surface temperature
Thermocouple guide to hollow shaft from the back side of turntable after connected with the temperature multi-channel gating device that is rotated with main shaft.When certain all the way
After thermocouple signal is strobed, amplify through amplifier, then is transferred in static test macro by slip ring electrical feedthrough.Due to cunning
The sliding contact of ring and brush makes to produce contact resistance between them, therefore slip ring electrical feedthrough connect with thermocouple and will affect survey
Warm galvanic couple feeds back the small electrical signals of temperature acquisition terminal.And the contact resistance of slip ring electrical feedthrough can be with the increase of revolving speed
And increase, so that high-speed rotary part wall surface temperature measurement result differs bigger with true value.Reducing contact resistance at present influences
Method be to temperature thermocouple feedback small electrical signals do the processing method for first amplifying and restoring and compensating afterwards, but compensation result
It cannot still reflect true wall surface temperature, the temperature results that experiment measurement obtains are relatively low.Various interference signals pass through electric signal
The transmission of slip ring electrical feedthrough also has an impact, and corresponding various intermediate links cause biggish error.And since measurement points are more,
The conducting wire that slip ring draws electricity is more, and connection is more complex, and apparatus structure is more complex.The slip ring of multiple measurement point temperature signals is transmitted simultaneously
Electrical feedthrough price is more expensive, limits it and is widely used.Therefore, from the accuracy and economy to turntable cavity wall face thermometry
Property angle is seen, needs to be changed existing thermometric mode.
Summary of the invention
The goal of the invention of the utility model is: in view of the above problems, providing a kind of pair of turntable chamber turntable wall surface
The experimental provision of temperature measurement, the utility model connect and pass through with wireless temperature acquisition module by using temperature sensor
Emit wireless signal transfer to receiving end, simplifies the temperature measurement structure measured turntable chamber wall surface temperature, improve thermometric accuracy.
The technical solution adopted in the utility model is as follows:
The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement, upstream disk, downstream disk including coaxial line and outer
Screen, the upstream disk and the sealing of outer screen one end are connected, and have outlet annular space between downstream disk and the outer screen other end；It is described
The outer wall of upstream disk is equipped with the first heat insulation layer, is connected at the outer wall axis of upstream disk for outside screen inner cavity conveying gas
First hollow shaft, first hollow shaft are connected with gas supply mechanism, and the upstream disk can be revolved by the first driving mechanism around its axis
Turn；The circumferential wall of the downstream disk is equipped with heating element, and the outer wall of downstream disk is embedded with multiple temperature sensors, downstream disk it is outer
Wall is equipped with the second heat insulation layer, is equipped with commutator transformer, wireless temperature acquisition module on the outside of the second heat insulation layer；The commutator transformer
It is connected with wireless temperature acquisition module, wireless temperature acquisition module is connected with temperature sensor, the temperature of temperature sensor detection
The wireless signal transfer that signal is issued by wireless temperature acquisition module is to receiving end.
When the operation of the utility model: outer screen is formd with upstream disk, the downstream disk for being located at outer screen both ends to turntable
Chamber, the first heat insulation layer and the second heat insulation layer can make to meet turntable chamber as far as possible adiabatic condition, and the utility model designs mesh
Be detect to turntable wall surface temperature (i.e. the inner wall temperature of downstream disk).Under the action of the first driving mechanism, upstream disk with
Outer screen rotates about the axis (peripheral since outer screen is fixedly connected with upstream disk, therefore when the first driving mechanism driving upstream disc spins
Screen also follows upstream disc spins).And heating element heats downstream disk.Gas supply mechanism is by high pressure gas by from first
Hollow shaft injects outer screen inner cavity, cools down to downstream disk, and then gas is discharged from outlet annular space.Temperature sensor will test
To the temperature signal (temperature sensor is used to detect the temperature of downstream disk inner wall) of downstream disk pass to wireless temperature acquisition mould
Block, then wireless temperature acquisition module issues wireless signal transfer and gives receiving end (computer), and computer receives wireless temperature and adopts
After collecting the wireless signal that module issues, conversion process is carried out into temperature information by software.In the present invention, temperature sensing
Device is embedded in the outer wall of downstream disk rather than is embedded in the inner wall of downstream disk；If temperature sensor is embedded in the inner wall of downstream disk,
Temperature sensor on downstream disk inner wall will affect intracavitary gas flowfield；And when the outer wall of temperature sensor insertion downstream disk,
Temperature of the temperature that temperature sensor detects close to downstream disk inner wall.
The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, the first driving mechanism packet
The first motor is included, the rotor of the first motor is connected with first rotating shaft, and first rotating shaft is equipped with the first driving gear；Described
One hollow shaft is equipped with the first driven gear, and first driving gear is meshed transmission with the first driven gear.As first
Driving mechanism preferred design, first rotating shaft and the first hollow shaft form the driving form of non-coaxial transmission.
The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, the downstream disk pass through second
Driving mechanism can rotate about the axis thereof, and second driving mechanism includes the second motor, and the rotor of the second motor is connected with
Second shaft, the second shaft are equipped with the second driving gear；It is connected with the second hollow shaft at the outer wall axis of the downstream disk, it should
Second hollow shaft is equipped with the second driven gear, and second driving gear is meshed transmission with the second driven gear.As
Two driving mechanism preferred designs, the second shaft and the second hollow shaft form the driving form of non-coaxial transmission.
Further, slip ring electrical feedthrough is equipped in that one end that the second hollow shaft is connected with downstream disk, the second hollow shaft,
The slip ring electrical feedthrough is used to power to heating element, commutator transformer；The outer ring of the slip ring electrical feedthrough and the second hollow shaft
It is fixedly connected with, the inner ring of slip ring electrical feedthrough is in free state, and the inner ring conducting wire of slip ring electrical feedthrough is worn from the second hollow shaft other end
Out, and inner ring conducting wire is not in contact with the second hollow shaft;The circumferential wall of the downstream disk offers annular groove, and the heating element is
Resistive heater, in resistive heater winding insertion annular groove, filled with for avoiding what resistive heater fell off from filling out in annular groove
Fill layer;The outer ring conducting wire of the slip ring electrical feedthrough is connected with resistive heater, commutator transformer respectively.
Further, the filled layer is sticky soil.Filled layer designed in downstream disk high-speed rotation
When, it can be avoided resistive heater and fall off.And as preferred design, filled layer is the biggish sticky soil of viscosity, and advantage exists
In: when needing to check or repairing resistive heater, sticky soil is easily removable and refills, without damaging Pan Bi.Certainly
Filled layer can also be other materials for avoiding resistive heater from falling off, such as cement；When filled layer is cement, if
When needing replacing resistive heater, the dismounting of cement is more difficult, and is easily damaged the circumferential wall of downstream disk.
The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, the temperature sensor circumference
It is distributed at the different radius of downstream disk.To measure the temperature at the different radius of downstream disk, that is, measure downstream disk inner wall
Radial distribution temperature.
The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, the temperature sensor are
PT100 platinum resistance thermometer sensor,.Preferably, PT100 platinum resistance thermometer sensor, temperature measurement accuracy is high, the resistance value variation with temperature rate of resistance is big and is in
Linearly, temperature-measuring range meets experimental design requirement.
The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, the outer screen can be adjusted axially
Whole is set in outside upstream disk, by adjusting the relative position between outer screen and upstream disk, with realization adjustment downstream disk and outside
Outlet annular space size between screen.
The experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, the gas supply mechanism include sky
Air compressor is connected between air compressor and the first hollow shaft by snorkel, wherein snorkel passes through with the first hollow shaft
Rotary joint is connected.
Further, it is provided on the snorkel for the flowmeter of detection gas flow and for gas pressure stabilizing
Pressure maintaining valve.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the utility model, the utility model is by adopting
It is given receiving end (such as computer) with temperature sensor and wireless temperature acquisition module, and by emitting wireless signal transfer, letter
Change the temperature measurement structure measured turntable chamber wall surface temperature, improve thermometric accuracy, the temperature of other rotary parts is measured
It is worth with important practical.
2, this temperature measuring equipment structure is simple, facilitates connection and assembling, does not need additional mechanism providing additional operations and the journeys such as temperature amplification, compensation
Sequence.
3, it is accurate to measure turntable wall surface (inner wall of downstream disk) temperature, while can well ensure the stabilization of measurement
Property, continuity, carry out the turntable wall surface temperature measurement in the case of stable state and unstable state.
4, low in cost, the slip ring electrical feedthrough of one multi-point temperature measurement of production needs members up to ten thousand at present, adds temperature signal
Amplification, compensation mechanism, price is more expensive, and the temperature acquisition system of this temperature measuring equipment only needs several hundred members, be greatly saved experiment at
This, is the experimental provision for needing to measure the laboratory of rotatable parts temperature and all affording to use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the schematic diagram that upstream disk, outer screen, downstream disk match;
Fig. 3 is distribution schematic diagram (conceal second heat insulation layer) of the components such as temperature sensor in downstream disk outer wall;
Fig. 4 is the cross-sectional view of downstream disk;
Fig. 5 is the schematic diagram that slip ring electrical feedthrough is set in the second hollow shaft；
Fig. 6 is the curve graph of downstream disk inner wall temperature radially-arranged experiment value and calculated value；
Fig. 7 is the radially-arranged curve graph of downstream disk inner wall temperature under various inlet amount；
Fig. 8 is the radially-arranged curve graph of downstream disk inner wall temperature under upstream disk different rotating speeds.
Marked in the figure: 1- outer screen, 11- axis, 12- outlet annular space, 2- upstream disk, the first heat insulation layer of 21-, 31- first
Motor, 32- first rotating shaft, the first driving gear of 33-, the first driven gear of 34-, the first hollow shaft of 35-, the compression of 41- air
Machine, 42- snorkel, 43- flowmeter, 44- pressure maintaining valve, 45- rotary joint, 5- downstream disk, the second heat insulation layer of 51-, 52- lead
Slot, 53- annular groove, the second motor of 61-, the second shaft of 62-, the second driving gear of 63-, the second driven gear of 64-, 65- second
Hollow shaft, 7- slip ring electrical feedthrough, the outer ring 71-, the outer ring 72- conducting wire, 73- inner ring, 74- inner ring conducting wire, 81- heating element, 82- are filled out
Fill layer, 91- commutator transformer, 92- wireless temperature acquisition module, 93- temperature sensor.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figures 1 to 5, the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement of the present embodiment, including
Upstream disk 2, downstream disk 5 and the outer screen 1 of coaxial line 11, the upstream disk 2 are connected with the sealing of outer 1 one end of screen, downstream disk 5 with
There is outlet annular space 12 between outer 1 other end of screen；The outer wall of the upstream disk 2 is equipped with the first heat insulation layer 21, upstream disk 2 it is outer
The first hollow shaft 35 for outside screen inner cavity conveying gas is connected at wall axis, which is connected with gas supply
Mechanism, the upstream disk 2 can be rotated by the first driving mechanism around its axis 11；The circumferential wall of the downstream disk 5 is equipped with heating
Element 81, the outer wall of downstream disk 5 are embedded with multiple temperature sensors 93, and the outer wall of downstream disk 5 is equipped with the second heat insulation layer 51, and second
Commutator transformer 91, wireless temperature acquisition module 92 are equipped on the outside of heat insulation layer 51；The commutator transformer 91 is adopted with wireless temperature
Collect module 92 to be connected, wireless temperature acquisition module 92 is connected with temperature sensor 93, the temperature signal that temperature sensor 93 detects
The wireless signal transfer issued by wireless temperature acquisition module 92 is to receiving end.
When the operation of the utility model: outer screen 1 and upstream disk 2, the downstream disk 5 for being located at outer 1 both ends of screen form pair
Turntable chamber, the first heat insulation layer 21 and the second heat insulation layer 51 can make to meet turntable chamber as far as possible adiabatic condition, this is practical new
The main purpose of type is to detect to turntable wall surface temperature (that is, inner wall temperature of downstream disk 5).In the effect of the first driving mechanism
Under, around the rotation of axis 11, (since outer screen 1 is fixedly connected with upstream disk 2, therefore the first driving mechanism drives upstream disk 2 with outer screen 1
When upstream disk 2 rotates, outer screen 1 also follows upstream disk 2 to rotate)；And heating element 81 heats downstream disk 5.Gas supply
Mechanism by injecting outer 1 inner cavity of screen from the first hollow shaft 35, cools down high pressure gas to downstream disk 5, then gas from
Outlet annular space 12 is discharged.(93 purpose of temperature sensor is to examine the temperature signal for the downstream disk 5 that temperature sensor 93 will test
Survey the temperature of 5 inner wall of downstream disk) wireless temperature acquisition module 92 is passed to, then wireless temperature acquisition module 92 issues wireless communication
Number pass to receiving end (computer).After computer receives the wireless signal that wireless temperature acquisition module 92 issues, pass through software
Conversion process is carried out into temperature information.In the present invention, temperature sensor 93 is embedded in the outer wall of downstream disk 5 rather than is embedded in
The inner wall of downstream disk 5；The inner wall that certain temperature sensor 93 is embedded in downstream disk 5 is more able to reflect out the inner wall temperature of downstream disk 5,
But the temperature sensor 93 on 5 inner wall of downstream disk will affect intracavitary gas flowfield；And temperature sensor 93 is embedded in downstream disk 5
Outer wall when, the temperature of temperature that temperature sensor 93 detects close to 5 inner wall of downstream disk.Preferably, upstream disk 2, downstream
Disk 5 is made of mild steel, and certainly, upstream disk 2, downstream disk 5 can also be made of other Heat Conduction Materials.First heat insulation layer
21, the second heat insulation layer 51 is made of heat-insulating materials such as mineral wool or asbestos boards, exhausted by first using the cover board with fixing hoop
Thermosphere 21 is pressed in 2 outer wall of upstream disk, the second heat insulation layer 51 is pressed in 5 outer wall of downstream disk.
Further optimization based on the present embodiment, in another embodiment, as shown in Figure 1, first driving mechanism
Including the first motor 31, the rotor of the first motor 31 is connected with first rotating shaft 32, and first rotating shaft 32 is equipped with first actively
Gear 33；First hollow shaft 35 is equipped with the first driven gear 34, first driving gear 33 and the first driven gear
34 are meshed transmission.As the first driving mechanism preferred design, first rotating shaft 32 and the first hollow shaft 35 form non-coaxial biography
Dynamic driving form.
Further optimization based on the present embodiment, in another embodiment, as shown in Figure 1, the downstream disk 5 passes through the
Two driving mechanisms can be rotated around its axis 11, and second driving mechanism includes the second motor 61, and the second motor 61 turns
Son is connected with the second shaft 62, and the second shaft 62 is equipped with the second driving gear 63；It is connected at the outer wall axis of the downstream disk 5
Have the second hollow shaft 65, which is equipped with the second driven gear 64, second driving gear 63 and second from
Moving gear 64 is meshed transmission.As the second driving mechanism preferred design, the second shaft 62 forms non-with the second hollow shaft 65
The driving form of coaxial transmission.
Further, in another embodiment, as shown in Figures 1 to 5, it is connected in the second hollow shaft 65 with downstream disk 5
That one end, the second hollow shaft 65 is interior equipped with slip ring electrical feedthrough 7, and the slip ring electrical feedthrough 7 is used for heating element 81, direct current transformation
Device 91 is powered；The outer ring 71 of the slip ring electrical feedthrough is fixedly connected with the second hollow shaft 65, and the inner ring 73 of slip ring electrical feedthrough is in certainly
By state, the inner ring conducting wire 74 of slip ring electrical feedthrough is pierced by from 65 other end of the second hollow shaft, and inner ring conducting wire 74 is not empty with second
Mandrel 65 is in contact;The circumferential wall of the downstream disk 5 offers annular groove 53, and the heating element 81 is resistive heater, should add
In hot water radiation wire winding insertion annular groove 53, filled with the filled layer 82 for avoiding resistive heater from falling off in annular groove 53;It is described
The outer ring conducting wire 72 of slip ring electrical feedthrough is connected with resistive heater, commutator transformer 91 respectively.When downstream disk 5 passes through the second driving
When mechanism can be rotated around its axis 11, the outer ring 71 of slip ring electrical feedthrough follows the second hollow shaft 65 to rotate, and slip ring electrical feedthrough
Inner ring 73 remain stationary transition.It will be evident that resistive heater is cased with ceramics pipe outer or other insulating materials.It is alternative,
Resistive heater is made of nichrome；The length of resistive heater can be determined according to actually required heating amount.For choosing
It selects, the outer wall of downstream disk 5 offers the wire lead slot 52 of connection annular groove 53, the outer ring conducting wire 72 and adding thermal resistance of slip ring electrical feedthrough
The connected guide line of silk, commutator transformer 91 is embedded in the wire lead slot 52.
Further, in another embodiment, the filled layer 82 is sticky soil.The purpose of design of filled layer 82 exists
In can be avoided resistive heater and fall off in 5 high-speed rotation of downstream disk.And as preferred design, filled layer 82 be viscosity compared with
Big sticky soil, it is advantageous that: when needing to check or repairing resistive heater, sticky soil is easily removable and again
It fills out, without damaging Pan Bi.Certain filled layer 82 can also be other materials for avoiding resistive heater from falling off, such as water
Mud；When filled layer 82 is cement, when if necessary to replace resistive heater, the dismounting of cement is more difficult, and is easy damage
The circumferential wall of bad downstream disk 5.
Further optimization based on the present embodiment, in another embodiment, as shown in figure 3, the temperature sensor 93
Circle distribution is at the different radius of downstream disk 5.To measure the temperature at the different radius of downstream disk 5, i.e., to measure down
Swim the radial distribution temperature of 5 inner wall of disk.
Further optimization based on the present embodiment, in another embodiment, the temperature sensor 93 are PT100 platinum heat
Resistance.Preferably, PT100 platinum resistance thermometer sensor, temperature measurement accuracy is high, the resistance value variation with temperature rate of resistance is big and linear, thermometric
Range meets experimental design requirement.Preferably, it is welded and fixed after PT100 platinum resistance thermometer sensor, insertion downstream disk 5.An embodiment wherein
In, PT100 platinum resistance thermometer sensor, is using three-wire system gage system common in regular industrial process control, it may be assumed that draws platinum resistance thermometer sensor, one end
A lead out, the other end draw the mode of two leads.
Further optimization based on the present embodiment, in another embodiment, the suit that the outer screen 1 can be axially adjustable
In outside upstream disk 2, by adjusting the relative position between outer screen 1 and upstream disk 2, downstream disk 5 and outer screen 1 are adjusted to realize
Between 12 size of outlet annular space.Alternative, outer screen 1 is made of composite material.Specifically, an embodiment wherein
In, outer screen 1 sticks in 21 circumferential wall of the first heat insulation layer, and outer screen 1 and the first heat insulation layer 21 pass through fastener (such as spiral shell
Bolt) it is fixedly connected with, to realize that upstream disk 2 and the sealing of outer 1 one end of screen are connected (certainly, between upstream disk 2 and the inner wall of outer screen 1
Sealing ring can also be set to reinforce sealing effect)；By adjusting link position (the also phase of outer screen 1 and the first heat insulation layer 21
When in having adjusted the relative position between outer screen 1 and upstream disk 2), it is achieved between adjustment downstream disk 5 and outer screen 1
12 size of outlet annular space.For example, removing bolt first when outlet annular space 12 needs to tune up, glue the outer disengaging of screen 1 (not
Even) 21 circumferential wall of the first heat insulation layer；Then outer screen 1 is mobile backwards to downstream disk 5, until 12 meet demand of outlet annular space, this
When the inner wall of outer screen 1 is sticked in the circumferential wall of the first heat insulation layer 21, outer screen 1 and the first insulation are then made by bolt
Layer 21 is fixedly connected with, this just has adjusted the link position of outer screen 1 and the first heat insulation layer 21；The size of outlet annular space 12, which is realized, to be adjusted
Greatly.When outlet annular space 12 needs to turn down, principle is identical.
Further optimization based on the present embodiment, in another embodiment, as shown in Figure 1, the gas supply mechanism includes
Air compressor 41 is connected between air compressor 41 and the first hollow shaft 35 by snorkel 42, wherein snorkel 42 and the
One hollow shaft 35 is connected by rotary joint 45.
Further, in another embodiment, as shown in Figure 1, being provided on the snorkel 42 for detection gas stream
The flowmeter 43 of amount and pressure maintaining valve 44 for gas pressure stabilizing.
The Combination Design of technical characteristic based on the various embodiments described above, in one embodiment, as shown in Figures 1 to 5,
First rotating shaft 32, the first hollow shaft 35, the second shaft 62, the second hollow shaft 65 are rotatably assemblied in workbench by bearing
On；First motor 31, the second motor 61 are fixedly arranged on workbench；In the present embodiment, upstream disk 2 rotates (the first motor
31 startings), downstream disk 5 it is static (the second motor 61 does not start), the radius of upstream disk 2 and downstream disk 5 is 200mm, PT100 platinum
Thermal resistance is distributed at radius 60mm, 90mm, 120mm, 160mm, 180mm of downstream disk 5, there is 4 PT100 platinum at different radii
Thermal resistance forms radial distribution form；Commutator transformer 91 have 1, wireless temperature acquisition module 92 have 3, direct current becomes
Depressor 91 and wireless temperature acquisition module 92 form the distribution of circumference array.Wherein, the air inflow of the first hollow shaft 35 is
200kg/h, 2 revolving speed of upstream disk are 2000rpm, and measurement actual temperature (experiment value) is compared with numerical simulation calculation (calculated value)
Compared with, as shown in fig. 6, test value and calculated value coincide it is preferable.The utility model to other five kinds of operating conditions (the first hollow shaft 35
Air inflow is 249kg/h, 299kg/h, 348kg/h, 405kg/h and 448kg/h) temperature measurement and simulation calculating have been carried out,
As a result identical is also preferable.Therefore, the measurement of turntable wall surface (5 inner wall of downstream disk) temperature radial temperature profile of the utility model
Precision is very high.In the present embodiment, the 5 inner wall temperature radial distribution of downstream disk under various inlet amount is also measured, as shown in fig. 7,
By taking air inflow is 100kg/h, 300kg/h, 400kg/h as an example；And 5 inner wall temperature of downstream disk under 2 different rotating speeds of upstream disk
Radial distribution, as shown in figure 8, by taking 2 revolving speed of upstream disk is 250rpm, 500rpm as an example.In Fig. 6, Fig. 7 and Fig. 8, abscissa is
The radius r(unit mm of downstream disk 5), ordinate is corresponding temperature T(unit K).With rotor-stator cavity chamber (upstream in the present embodiment
The rotation of disk 2, downstream disk 5 are static) it is subject to for example, it is of course also possible to turning-turntable chamber (rotation of upstream disk 2, the rotation of downstream disk 5
Turn), the revolving speed of the first motor 31 and the second motor 61 passes through silicon-controlled regulation and control.The utility model passes through flowmeter
43 can measure gas flow, and external photoelectric figure revolution counter can measure turntable (upstream disk 2, downstream disk 5) revolving speed, two disks
(upstream disk 2, downstream disk 5) rotating ratio, can also external pertinent instruments test panel chamber axial gap, outlet annular space, it is each to analyze
Influence of a parameter to disk chamber cooling effect.Aero gas turbine engine is that thermocouple is placed in static guider at present
Blade cannot reflect the actual temperature of the poor working-blade of operating condition to measure temperature locating for turbine.This experiment dress
The rotating disk temperature-measurement principle set can be used for the high temperature such as aero gas turbine engine turbo blade, the turbine disk and axis, high speed rotation
The temperature of component measures.Therefore the utility model has stronger application value.
In conclusion the experimental provision measured using a kind of pair of turntable chamber turntable wall surface temperature of the utility model, this reality
With novel by using temperature sensor and wireless temperature acquisition module, and receiving end (ratio is given by transmitting wireless signal transfer
Such as computer), simplify the temperature measurement structure measured turntable chamber wall surface temperature, thermometric accuracy is improved, to other rotary parts
Temperature measurement also have important practical value.This temperature measuring equipment structure is simple, facilitates connection and assembling, does not need temperature and puts
Greatly, additional mechanism providing additional operations and the program such as compensation.It is accurate to the measurement of turntable wall surface (inner wall of downstream disk) temperature, while can guarantee well
Stability, the continuity of measurement carry out the turntable wall surface temperature measurement in the case of stable state and unstable state.It is low in cost, at present
The slip ring electrical feedthrough for making a multi-point temperature measurement needs members up to ten thousand, and along with temperature signal amplification, compensation mechanism, price is more expensive,
And the temperature acquisition system of this temperature measuring equipment only needs several hundred members, and experimental cost is greatly saved, and is to need to measure rotatable parts temperature
The experimental provision that the laboratory of degree is all afforded to use.When the external pertinent instruments of the temperature measuring equipment, different parameters can be measured
Under (gas flow, rotary speed, two disk rotating speed ratios, disk chamber axial gap, outlet gap) to turntable wall surface temperature, can be with
As multiple experiment porch, to analyze influence of each parameter of each pipe to disk chamber cooling effect.Using the technical side of the utility model
When case, can controlledly analyze, observe whether there is causality, Yi Jixiang between the data or phenomenon of certain needs
Mutual influence degree.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement, it is characterised in that: the upstream including coaxial line (11)
Disk (2), downstream disk (5) and outer screen (1), the upstream disk (2) and the sealing of outer screen (1) one end are connected, downstream disk (5) and outer
There are outlet annular space (12) between screen (1) other end；
The outer wall of the upstream disk (2) is equipped with the first heat insulation layer (21), is connected at the outer wall axis of upstream disk (2) for outside
Screen inner cavity conveys the first hollow shaft (35) of gas, which is connected with gas supply mechanism, the upstream disk (2)
It can be rotated around its axis (11) by the first driving mechanism；
The circumferential wall of the downstream disk (5) is equipped with heating element (81), and the outer wall of downstream disk (5) is embedded with multiple temperature sensors
(93), the outer wall of downstream disk (5) is equipped with the second heat insulation layer (51), be equipped on the outside of the second heat insulation layer (51) commutator transformer (91),
Wireless temperature acquisition module (92)；
The commutator transformer (91) is connected with wireless temperature acquisition module (92), and wireless temperature acquisition module (92) and temperature pass
Sensor (93) is connected, and the temperature signal of temperature sensor (93) detection passes through the wireless communication that wireless temperature acquisition module (92) issue
Number pass to receiving end.
2. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as described in claim 1, it is characterised in that: described
First driving mechanism includes the first motor (31), and the rotor of the first motor (31) is connected with first rotating shaft (32), and first turn
Axis (32) is equipped with the first driving gear (33)；First hollow shaft (35) is equipped with the first driven gear (34), and described the
One driving gear (33) is meshed transmission with the first driven gear (34).
3. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as described in claim 1, it is characterised in that: described
Downstream disk (5) can be rotated by the second driving mechanism around its axis (11), and second driving mechanism includes the second motor
(61), the rotor of the second motor (61) is connected with the second shaft (62), and the second shaft (62) is equipped with the second driving gear
(63)；The second hollow shaft (65) are connected at the outer wall axis of the downstream disk (5), which is equipped with second
Driven gear (64), second driving gear (63) are meshed transmission with the second driven gear (64).
4. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as claimed in claim 3, it is characterised in that: the
That one end that two hollow shafts (65) are connected with downstream disk (5), the second hollow shaft (65) is interior to be equipped with slip ring electrical feedthrough (7), the cunning
Ring electrical feedthrough (7) is used to power to heating element (81), commutator transformer (91)；
The outer ring (71) of the slip ring electrical feedthrough is fixedly connected with the second hollow shaft (65), and the inner ring (73) of slip ring electrical feedthrough is in certainly
By state, the inner ring conducting wire (74) of slip ring electrical feedthrough is pierced by from the second hollow shaft (65) other end, and inner ring conducting wire (74) not with
Second hollow shaft (65) is in contact;
The circumferential wall of the downstream disk (5) offers annular groove (53), and the heating element (81) is resistive heater, heating electricity
It hinders in silk winding insertion annular groove (53), filled with the filled layer (82) for avoiding resistive heater from falling off in annular groove (53);
The outer ring conducting wire (72) of the slip ring electrical feedthrough is connected with resistive heater, commutator transformer (91) respectively.
5. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as claimed in claim 4, it is characterised in that: described
Filled layer (82) is sticky soil.
6. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as described in claim 1, it is characterised in that: described
Temperature sensor (93) circle distribution is at the different radius of downstream disk (5).
7. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as described in claim 1, it is characterised in that: described
Temperature sensor (93) is PT100 platinum resistance thermometer sensor,.
8. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as described in claim 1, it is characterised in that: described
Outer screen (1) can be axially adjustable be set in upstream disk (2) outside, by adjusting opposite between outer screen (1) and upstream disk (2)
Position, to realize outlet annular space (12) size between adjustment downstream disk (5) and outer screen (1).
9. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as described in claim 1, it is characterised in that: described
Gas supply mechanism includes air compressor (41), passes through snorkel (42) phase between air compressor (41) and the first hollow shaft (35)
Even, wherein snorkel (42) is connected with the first hollow shaft (35) by rotary joint (45).
10. the experimental provision of a kind of pair of turntable chamber turntable wall surface temperature measurement as claimed in claim 9, it is characterised in that: institute
It states and is provided on snorkel (42) for the flowmeter (43) of detection gas flow and for the pressure maintaining valve of gas pressure stabilizing
(44).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821139295.0U CN208672174U (en) | 2018-07-18 | 2018-07-18 | A kind of experimental provision of pair of turntable chamber turntable wall surface temperature measurement |
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| CN201821139295.0U CN208672174U (en) | 2018-07-18 | 2018-07-18 | A kind of experimental provision of pair of turntable chamber turntable wall surface temperature measurement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517270A (en) * | 2020-04-24 | 2020-08-11 | 华东师范大学 | High-adaptability container capable of realizing efficient replacement and installation of atomic air chamber |
| CN113250754A (en) * | 2021-04-22 | 2021-08-13 | 中国民用航空飞行学院 | Flow structure for counter-rotating disc cavity |
| CN114354013A (en) * | 2022-01-25 | 2022-04-15 | 浙江大学 | Combustor outlet temperature measuring mechanism coupled with turbine guide vane |
-
2018
- 2018-07-18 CN CN201821139295.0U patent/CN208672174U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517270A (en) * | 2020-04-24 | 2020-08-11 | 华东师范大学 | High-adaptability container capable of realizing efficient replacement and installation of atomic air chamber |
| CN113250754A (en) * | 2021-04-22 | 2021-08-13 | 中国民用航空飞行学院 | Flow structure for counter-rotating disc cavity |
| CN114354013A (en) * | 2022-01-25 | 2022-04-15 | 浙江大学 | Combustor outlet temperature measuring mechanism coupled with turbine guide vane |
| CN114354013B (en) * | 2022-01-25 | 2022-12-20 | 浙江大学 | Combustor outlet temperature measuring mechanism coupled with turbine guide vane |
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