CN209181936U - A kind of total temperature probe automatically adjusting port size - Google Patents
A kind of total temperature probe automatically adjusting port size Download PDFInfo
- Publication number
- CN209181936U CN209181936U CN201821902146.5U CN201821902146U CN209181936U CN 209181936 U CN209181936 U CN 209181936U CN 201821902146 U CN201821902146 U CN 201821902146U CN 209181936 U CN209181936 U CN 209181936U
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- China
- Prior art keywords
- stomata
- stagnation cover
- reducing machine
- venthole
- air inlet
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Abstract
The utility model discloses a kind of total temperature probes for automatically adjusting port size, it is related to aero-engine total temperature the field of test technology, the utility model includes stagnation cover, temperature sensor and thermal seal, stagnation cover is hollow tubular structure, the sealing of stagnation cover left end, the right end of stagnation cover is sealed by thermal seal, temperature sensor test side is arranged in stagnation cover, temperature sensor is fixed on thermal seal, the left end of stagnation cover is provided with the air inlet connected with the hollow space of stagnation cover, the right end of stagnation cover is provided with the venthole connected with the hollow space of stagnation cover at temperature sensor, it is arranged on stagnation cover by rotating and changes the stomata reducing machine of the enterprising stomata of stagnation cover and venthole openings of sizes, stomata reducing machine passes through gear reduction, one-way clutch and stepper motor coordinated drive；The utility model can be improved the advantages of measuring accuracy.
Description
Technical field
The utility model relates to aero-engine total temperature the field of test technology, more particularly to a kind of automatic adjustment gas
The total temperature probe of mouth size.
Background technique
When total temperature refers to that fluid is totally stationary with adiabatic process, its kinetic energy translates into the temperature reflected when interior energy.
In aviation field, stagnation temperature is referred to as total temperature, and the hygrosensor by being mounted on aircraft surface
To measure.Probe designs remain static at by air relative to aircraft.When air is opposing stationary, kinetic energy is converted into inside
Energy.Air is compressed and the temperature of insulation is undergone to increase.Therefore, total temperature is higher than static (or environment) air themperature.
Total temperature is the basic input of air-data computer, so as to still air temperature be calculated, to obtain really
Air speed.
It is accurate to measure combustor exit combustion gas stream temperature in aerospace field, it can be sprayed for engine inlets and tail
The optimization design of pipe provides important reference data.When the high enthalpy fuel gas temperature of actual measurement high speed, in order to make sensor measurement temperature
Spend closer to air-flow true temperature, usually by sensor with suitable stagnation cover is mating is made into total temperature probe pattern.Total temperature sensing
When device is tested, by the dual stagnation of stagnation chamber and sensor probe, forward flow speed is reduced rapidly combustion gas stream, the kinetic energy of air-flow
It is changed into thermal energy, flowing brought velocity error also by fuel gas high-speed will reduce.
In thermal-hydraulic mechanics, the total temperature Tt of air-flow is made of static temperature T and dynamic temperature Tv two parts.Static temperature is measurement gas
The kinetic energy of molecule free movement；Dynamic temperature is to measure the kinetic energy of gas molecule directed movement.
In formula, v is air velocity；Cp is specific heat at constant pressure；K is adiabatic exponent, the ratio of gas specific heat at constant pressure and specific heat at constant volume
Value, k=cp/cv, for air, k=1.4；For combustion gas, k=1.33；Ma is gasflow mach number.
The deviation of the total temperature of the instruction temperature and air-flow of sensor, is measurement error.
In engine performance test test, need to measure jet flow field total temperature with different types of total temperature probe.It is existing
Total temperature probe passes in and out that tolerance is smaller, and thermal inertia is big, thermometric position cannot abundant stagnation incoming flow, the heat exchange of temperature sensor surface is not
Sufficiently, and the insensitive angular region of air-flow is small, is easy to generate measurement error in measurement process, is difficult accurately to measure aeroplane engine
Machine flow field total temperature, especially at low speeds, traditional total temperature probe air inflow are small, are unable to precise measurement flow field total temperature, therefore send out
The size of the air inlet and air outlet of the total temperature probe of motivation has certain requirement, however on the market but without probe can be changed
The total temperature probe of air inlet and gas outlet size.
Utility model content
The purpose of this utility model is that: it can not be adjusted to solve traditional total temperature probe air inflow, causing cannot be accurate
The problem of measuring flow field total temperature, the utility model provide a kind of total temperature probe for automatically adjusting port size.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of total temperature probe automatically adjusting port size, including stagnation cover, temperature sensor and thermal seal, institute
Stating stagnation cover is hollow tubular structure, and the right end of the sealing of stagnation cover left end, stagnation cover is sealed by thermal seal, described
Thermal seal is fixedly connected with stagnation cover, and the temperature sensor test side is arranged in stagnation cover, and temperature sensor is fixed
On thermal seal, the left end of stagnation cover is provided with the air inlet connected with the hollow space of stagnation cover, the right end of stagnation cover
The venthole connected with the hollow space of stagnation cover is provided at temperature sensor；It is arranged on the stagnation cover by turning
It moves to change the stomata reducing machine of the enterprising stomata of stagnation cover and venthole openings of sizes, stomata reducing machine passes through gear reduction
Driving, the gear reduction are driven by one-way clutch and stepper motor.By the way that air inlet reducing machine is arranged, this is allowed
Utility model can change the diameter of air inlet and venthole, allow total temperature probe can when the total temperature measurement in progress flow field
Diameter by adjusting air inlet and gas outlet keeps measurement result more accurate.
Working principle: stepper motor drives one-way clutch rotation, one-way clutch and gear reduction coordinated drive
The rotation of stomata reducing machine, allows the diameter of venthole and air inlet to be changed, the gas output of air inlet and venthole is able to
Changing, the data that the disengaging tolerance by changing air inlet and venthole is collected under various states are for statistical analysis, final
It is closest out to improve measurement accuracy with actual flow field total temperature, while not needed when total temperature convenient for being measured in laboratory
It designs more total temperature probes to measure, improves the versatility of this product.
Further, it is provided with stomata reducing machine at the air inlet and venthole, the stomata reducing machine is hollow
Pipe structure is provided with the variable diameter hole that can be connected with air inlet or venthole, the variable diameter hole in the outer circle of stomata reducing machine
It is constituted for the different hole of multiple diameters.By the way that the hole of multiple and different diameters is arranged in stomata reducing machine, stomata reducing machine is allowed to rotate
When, the hole of different-diameter is sequentially connected with air inlet or venthole on stomata reducing machine, changes air inlet indirectly to realize
Total temperature probe can be gone out by adjusting air inlet level-one when the total temperature measurement in progress flow field for the size of hole or venthole
The throughput of port is compared and analyzed by the measurement result under a variety of measurement patterns, keeps measurement result more accurate.
Further, gear is provided on the stomata reducing machine of the air inlet position and the stomata reducing machine at venthole
Deceleration mechanism, drive air inlet position gear reduction one-way clutch and driving venthole at gear reduction it is unidirectional
It is set in shaft to clutch reverse symmetry.Stomata at stomata reducing machine and venthole by that will drive air inlet position becomes
The one-way clutch of diameter device is oppositely arranged, the stomata reducing machine at the stomata reducing machine and driving venthole of driving air inlet position
Two one-way clutch using the same stepper motor drive when, stepper motor rotate forward when air inlet position stomata
Reducing machine can rotate, when stepper motor reversion when venthole at stomata reducing machine rotation, allow present apparatus structure more
It is compact, reduce the manufacturing cost of the present apparatus.
Further, the gear reduction includes the fixed driven gear being set on stomata reducing machine, Yi Jihe
The outer ring of the driving gear that driven gear is meshed, the one-way clutch is fixedly connected with driving gear, the one-way clutch
Shaft is fixedly installed on the inner ring of device, the shaft is fixedly connected with the output shaft of stepper motor.
Further, the left end of the stagnation cover is fixedly installed the plug for blocking stagnation cover, a left side for the shaft
End is fixedly connected with the output shaft of stepper motor by shaft coupling, the other end of the shaft and the axis being fixed on plug
Seat is held to be rotatablely connected by rolling bearing.
Further, also it is arranged with thrust sleeve on the stagnation cover, the left end of the thrust sleeve and air inlet position
The contact of stomata reducing machine, the right end of the thrust sleeve are contacted with the stomata reducing machine at venthole.Thrust sleeve can will be into
Stomata reducing machine at stomata is separated with the stomata reducing machine at venthole, convenient for the positioning of the stomata reducing machine at two.
Further, the one-way clutch is roller oblique slot type one-way clutch.
The beneficial effects of the utility model are as follows:
1. allowing the utility model that can change the diameter of air inlet and venthole by setting air inlet reducing machine, allowing
Total temperature probe can make measurement result more by adjusting the diameter of air inlet and gas outlet when the total temperature measurement in progress flow field
Add accurate.
2. it is for statistical analysis by the data that the disengaging tolerance for changing air inlet and venthole is collected under various states, most
Obtain eventually closest with actual flow field total temperature, improve measurement accuracy, at the same convenient in laboratory when measurement total temperature not
It needs to design more total temperature probes to measure, improves the versatility of this product.
3. when allowing stomata reducing machine to rotate, stomata becomes by the hole that multiple and different diameters are arranged in stomata reducing machine
Sequentially perhaps venthole is connected to realize and change air inlet or venthole indirectly with air inlet in the hole of different-diameter on diameter device
Size, allow total temperature probe when carrying out the total temperature measurement in flow field can by adjusting the throughput of air inlet level-one gas outlet,
It is compared and analyzed by the measurement result under a variety of measurement patterns, keeps measurement result more accurate.
4. by the way that the one-way clutch of the stomata reducing machine at the stomata reducing machine and venthole of air inlet position will be driven anti-
To setting, two one-way clutch benefits of the stomata reducing machine at the stomata reducing machine and driving venthole of driving air inlet position
When drive with the same stepper motor, the stomata reducing machine of air inlet position can be rotated when stepper motor rotates forward, when
Stomata reducing machine rotation when stepper motor inverts at venthole, makes present apparatus structure more compact, reduces the present apparatus
Manufacturing cost.
5. thrust sleeve can be by the stomata at the stomata reducing machine of air inlet position and venthole by setting thrust sleeve
Reducing machine separates, convenient for the positioning of the stomata reducing machine at two.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is stomata reducing machine cross-sectional view in Fig. 1；
Fig. 3 is one-way clutch disabled state structural schematic diagram in Fig. 1；
Fig. 4 is one-way clutch enabled state structural schematic diagram in Fig. 1；
Fig. 5 is plug cross-sectional view in Fig. 1.
Appended drawing reference: 1- plug, 2- bearing block, 3- shaft, 4- driving gear, 5- one-way clutch, 6- stomata reducing machine,
7- driven gear, 8- thrust sleeve, 9- stagnation cover, 10- stepper motor, 11- temperature sensor, 12- thermal seal.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In addition, term " the
One ", " second " etc. is only used for distinguishing description, is not understood to indicate or imply relative importance.
In the description of the utility model embodiment, it should be noted that the instructions such as term "inner", "outside", "upper"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings or when utility model product use usually puts
The orientation or positional relationship put, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
Embodiment 1
As shown in Fig. 1 to 5, the present embodiment provides it is a kind of automatically adjust port size total temperature probe, including stagnation cover 9,
Temperature sensor 11 and thermal seal 12, the stagnation cover 9 are hollow tubular structure, and the left end of the stagnation cover 9 is fixed
It is provided with the plug 1 for blocking stagnation cover 9, external screw thread is set on plug 1, in 9 left end of stagnation cover in vacancy setting and plug 1
The internal screw thread that matches of external screw thread, the right end of stagnation cover 9 sealed by thermal seal 12, the thermal seal 12 with it is stagnant
Only cover 9 is fixedly connected, and is provided with Internal Pipe Thread in the right end of stagnation cover 9 is hollow, be provided in the outer circle of thermal seal 12 with
The external pipe thread that the Internal Pipe Thread of the right end of stagnation cover 9 matches, 11 test side of temperature sensor are arranged in stagnation cover 9
Interior, the fixing end of temperature sensor 11 is embedded in thermal seal 12, the left end of stagnation cover 9 be provided with in stagnation cover 9
The air inlet that empty part is connected, the right end of stagnation cover 9 is provided at temperature sensor 11 to be tapped with the hollow portion of stagnation cover 9
Logical venthole；It is arranged on the stagnation cover 9 by rotating and changes the enterprising stomata of stagnation cover 9 and venthole openings of sizes
Stomata reducing machine 6, stomata reducing machine 6 by gear reduction drive, the gear reduction by one-way clutch 5 with
And stepper motor 10 drives.By the way that air inlet reducing machine 6 is arranged, allow the utility model that can change air inlet and venthole
Total temperature probe can be made to measure by adjusting the diameter of air inlet and gas outlet when the total temperature measurement in progress flow field for diameter
As a result more accurate.
Embodiment 2
It is described further on the basis of embodiment 1, stomata reducing machine 6 is provided at air inlet and venthole,
The stomata reducing machine 6 is hollow tubular structure, and the hollow space of stomata reducing machine 6 and the outer circle of stagnation cover 9 form clearance fit,
It is provided in the outer circle of stomata reducing machine 6 around multiple variable diameter holes that 6 centre of gyration of stomata reducing machine is evenly arranged, each variable diameter
The diameter in hole is different, and in 6 rotation process of stomata reducing machine, air inlet or venthole are merely able to and stomata reducing machine 6
On a variable diameter hole connect.By the way that the hole of multiple and different diameters is arranged in stomata reducing machine 6, stomata reducing machine 6 is allowed to rotate
When, the hole of different-diameter is sequentially connected with air inlet or venthole on stomata reducing machine 6, changes air inlet indirectly to realize
Or the size of venthole, allow total temperature probe can be by adjusting air inlet level-one outlet when the total temperature measurement in progress flow field
The throughput of mouth, is compared and analyzed by the measurement result under a variety of measurement patterns, keeps measurement result more accurate.
Embodiment 3
It is described further on the basis of embodiment 1, the stomata at the stomata reducing machine 6 and venthole of air inlet position
It is provided with gear reduction on reducing machine 6, drives the one-way clutch 5 and driving outlet of air inlet position gear reduction
It is set in shaft 3 to 5 reverse symmetry of one-way clutch of gear reduction at hole.By the stomata that will drive air inlet position
The one-way clutch 5 of stomata reducing machine 6 at reducing machine 6 and venthole is oppositely arranged, when the stomata variable diameter of driving air inlet position
Device 6 and driving venthole at stomata reducing machine 6 two one-way clutch 5 using the same stepper motor 10 drive when
It waits, the stomata reducing machine 6 of air inlet position can rotate when stepper motor 10 rotates forward, and go out when stepper motor 10 inverts
Stomata reducing machine 6 at stomata rotates, and makes present apparatus structure more compact, reduces the manufacturing cost of the present apparatus.
Gear reduction includes the driven gear 7 being set on stomata reducing machine 6, the mounting hole and gas of driven gear 7
The outer circle of hole reducing machine 6 is interference fit, and driven gear 7 is meshed with driving gear 4, the outer ring of the one-way clutch 5 and
The end face of driving gear 4 is fixedly connected by screw, and corresponding threaded hole is arranged in the end face of driving gear 4, one-way clutch 5
Shaft 3 is fixedly installed on inner ring, the installation inner hole and shaft 3 of one-way clutch 5 are interference fitted, the shaft 3 and stepping electricity
The output shaft of machine 10 is fixedly connected.
The left end of shaft 3 is fixedly connected with the output shaft of stepper motor 10 by shaft coupling, the other end of the shaft 3 with
Be fixed at bearing block 2 on plug 1 to be rotatablely connected by rolling bearing, the welding of bearing block 2 and plug 1, bearing block 2 and
Plug 1 also can be made overall structure.
Embodiment 4
It is described further on the basis of embodiment 1, thrust sleeve 8, the thrust housing is also arranged on stagnation cover 9
The left end of cylinder 8 is contacted with the stomata reducing machine 6 of air inlet position, the right end and the stomata variable diameter at venthole of the thrust sleeve 8
Device 6 contacts, and two end faces of the inner hole of thrust sleeve 8 and the outer circle clearance fit of stagnation cover 9, thrust sleeve 8 manufacture finish
High as far as possible, frictional force is smaller when allowing thrust sleeve 8 to contact with stomata reducing machine 6.Thrust sleeve 8 can be by air inlet position
Stomata reducing machine 6 is separated with the stomata reducing machine 6 at venthole, convenient for the positioning of the stomata reducing machine 6 at two.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (7)
1. a kind of total temperature probe for automatically adjusting port size, including stagnation cover (9), temperature sensor (11) and insulation sealing
Part (12), the stagnation cover (9) are hollow tubular structure, and stagnation cover (9) the left end sealing, the right end of stagnation cover (9) passes through
Thermal seal (12) sealing, the thermal seal (12) are fixedly connected with stagnation cover (9), temperature sensor (11) inspection
End setting is surveyed in stagnation cover (9), temperature sensor (11) is fixed on thermal seal (12), and the left end of stagnation cover (9) is set
It is equipped with the air inlet connected with the hollow space of stagnation cover (9), the right end of stagnation cover (9) is arranged at temperature sensor (11)
There is the venthole connected with the hollow space of stagnation cover (9)；Pass through rotation it is characterized by: being arranged on the stagnation cover (9)
Change the stomata reducing machine (6) of the enterprising stomata of stagnation cover (9) and venthole openings of sizes, stomata reducing machine (6) passes through gear
The driving of deceleration mechanism, the gear reduction are driven by one-way clutch (5) and stepper motor (10).
2. it is according to claim 1 automatic adjustment port size total temperature probe, it is characterised in that: the air inlet and go out
It is provided at stomata stomata reducing machine (6), the stomata reducing machine (6) is hollow tubular structure, the outer circle of stomata reducing machine (6)
On be provided with the variable diameter hole that can be connected with air inlet or venthole, the variable diameter hole is that the different hole of multiple diameters is constituted.
3. the total temperature probe of automatic adjustment port size according to claim 1, it is characterised in that: the air inlet position
It is provided with gear reduction on stomata reducing machine (6) at stomata reducing machine (6) and venthole, drives air inlet position gear
It is covered to one-way clutch (5) reverse symmetry of gear reduction at the one-way clutch (5) and driving venthole of deceleration mechanism
It is located on shaft (3).
4. the total temperature probe of automatic adjustment port size according to claim 1, it is characterised in that: the gear reduction unit
Structure includes the fixed driven gear (7) being set on stomata reducing machine (6), and the driving tooth being meshed with driven gear (7)
It takes turns (4), the outer ring of the one-way clutch (5) is fixedly connected with driving gear (4), on the inner ring of the one-way clutch (5)
It is fixedly installed shaft (3), the shaft (3) is fixedly connected with the output shaft of stepper motor (10).
5. the total temperature probe of automatic adjustment port size according to claim 3, it is characterised in that: the stagnation cover (9)
Left end be fixedly installed the plug (1) for blocking stagnation cover (9), the left end of the shaft (3) and stepper motor (10)
Output shaft is fixedly connected by shaft coupling, the other end of the shaft (3) and the bearing block (2) being fixed on plug (1)
It is rotatablely connected by rolling bearing.
6. the total temperature probe of automatic adjustment port size according to claim 3, it is characterised in that: the stagnation cover (9)
On be also arranged with thrust sleeve (8), the left end of the thrust sleeve (8) is contacted with the stomata reducing machine (6) of air inlet position, described
The right end of thrust sleeve (8) is contacted with the stomata reducing machine (6) at venthole.
7. the total temperature probe of automatic adjustment port size according to claim 1, it is characterised in that: the one-way clutch
It (5) is roller oblique slot type one-way clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821902146.5U CN209181936U (en) | 2018-11-19 | 2018-11-19 | A kind of total temperature probe automatically adjusting port size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821902146.5U CN209181936U (en) | 2018-11-19 | 2018-11-19 | A kind of total temperature probe automatically adjusting port size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209181936U true CN209181936U (en) | 2019-07-30 |
Family
ID=67373325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821902146.5U Expired - Fee Related CN209181936U (en) | 2018-11-19 | 2018-11-19 | A kind of total temperature probe automatically adjusting port size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209181936U (en) |
-
2018
- 2018-11-19 CN CN201821902146.5U patent/CN209181936U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190730 Termination date: 20211119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |