CN209181938U - A kind of total temperature probe that can adjust temperature sensor location - Google Patents
A kind of total temperature probe that can adjust temperature sensor location Download PDFInfo
- Publication number
- CN209181938U CN209181938U CN201821902166.2U CN201821902166U CN209181938U CN 209181938 U CN209181938 U CN 209181938U CN 201821902166 U CN201821902166 U CN 201821902166U CN 209181938 U CN209181938 U CN 209181938U
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- temperature sensor
- limit sleeve
- stagnation cover
- side limit
- sleeve
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Abstract
The utility model discloses the total temperature probes that one kind can adjust temperature sensor location, it is related to aero-engine total temperature the field of test technology, the utility model includes stagnation cover, temperature sensor and thermal seal, the left end of stagnation cover is provided with the air inlet connected with the hollow space of stagnation cover, and the right end of stagnation cover is provided with the venthole connected with the hollow space of stagnation cover at temperature sensor；The position-limit mechanism of distance of stretch out and draw back of the limit temperature sensor in stagnation cover is provided between the stagnation cover and the thermal seal, position-limit mechanism successively includes the left side limit sleeve being fixedly connected with stagnation cover and the right side limit sleeve being fixedly connected with left side limit sleeve from left to right, it is provided with external screw thread on the thermal seal, the internal screw thread to match with the external screw thread on thermal seal is provided on the limit sleeve of right side；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, can adjust temperature more particularly to one kind
Spend the total temperature probe of sensor position.
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.
Utility model content
The purpose of this utility model is that: in order to solve the position of the temperature sensor of traditional total temperature probe can not carry out it is micro-
It adjusts, causes the problem of being unable to precise measurement flow field total temperature, the utility model, which provides one kind, can adjust temperature sensor location
Total temperature probe.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of total temperature probe that can adjust temperature sensor location, including stagnation cover, temperature sensor and insulation are close
Sealing, the stagnation cover are hollow tubular structure, and the right end of the sealing of stagnation cover left end, stagnation cover is close by thermal seal
Envelope, the thermal seal are fixedly connected with stagnation cover, and the temperature sensor test side is arranged in stagnation cover, temperature sensing
Device is fixed on thermal seal, and the left end of stagnation cover is provided with the air inlet connected with the hollow space of stagnation cover, stagnation cover
Right end be provided at temperature sensor with the hollow space of stagnation cover connect venthole；The stagnation cover and it is described absolutely
Be provided with the position-limit mechanism of distance of stretch out and draw back of the limit temperature sensor in stagnation cover between heat seal, position-limit mechanism from a left side to
The right side successively includes the left side limit sleeve being fixedly connected with stagnation cover and the right side limit sleeve being fixedly connected with left side limit sleeve,
It is provided with external screw thread on the thermal seal, is provided on the limit sleeve of right side and matches with the external screw thread on thermal seal
Internal screw thread.Thermal seal is threadedly coupled with right side limit sleeve, can be limited by turning thermal seal or right side
Position set is to adjust lengthwise position of the temperature sensor being fixedly mounted on thermal seal in stagnation cover, so that temperature be allowed to pass
Sensor is able to detect that the gas flow temperature of different location in stagnation cover, improves the accuracy of testing result.
Working principle: thermal seal is threadedly coupled with right side limit sleeve, by turning thermal seal or the right side
Lateral confinement position set changes the relative positional relationship between thermal seal and right side limit sleeve, reaches and changes temperature sensor in stagnation
Position in cover.
Further, temperature sensor activity runs through left side limit sleeve and right side limit sleeve, left side limit sleeve and right side
Cavity is provided in the assembly of limit sleeve, being provided in cavity can prevent the test side of temperature sensor to be moved to left side limit
Guide sleeve in the set of position, the guide sleeve are movably set on temperature sensor, and the left end of temperature sensor is fixedly installed energy
The blocking thrust surface for enough guide sleeve being stopped to skid off.Utilize the cavity of guide sleeve and the assembly of left side limit sleeve and right side limit sleeve
The mode to match limits the position change of temperature sensor, and the position of temperature sensor is avoided to exceed presumptive area,
Cause prohibited data detection true.
Further, sealing ring resistant to high temperature is provided between the left side limit sleeve and right side limit sleeve.Resistance to height is set
Temperature sealing ring allow left side limit sleeve and right side limit sleeve between better tightness, improve the detection accuracy of the present apparatus.
Further, sealing ring is the O-ring seals of red copper material.The O-ring seals of red copper material not only can be with resistance to height
Temperature, and red copper is relatively soft, and sealing effect is good, further increases the measurement accuracy of the present apparatus.
Further, movable sleeve is equipped with spring in outer circle on the thermal seal, and the left end and right side of the spring limit
The right end face contact of position set, the right end of spring are fixedly connected with thermal seal.By the way that spring is arranged, thermal seal and right is allowed
There can also be pretightning force after being connected through a screw thread between the limit sleeve of side, prevent thermal seal opposite with right side limit sleeve sliding
It moves, causes the position of temperature sensor to change, influence measurement accuracy.
Further, the left end of left side limit sleeve is provided with limit stepped hole, and limit stepped hole is through entire left side limit
Set, the limit stepped hole successively include sliding with the cylindrical hole one of sensor outer circle clearance fit, restricted guidance set from left to right
Dynamic conical bore and the cylindrical hole two with the outer circle clearance fit of guide sleeve are also symmetrically arranged with limit on the limit sleeve of right side
Stepped hole.
The beneficial effects of the utility model are as follows:
1. thermal seal is threadedly coupled with right side limit sleeve, it can be by turning thermal seal or right side
Limit sleeve is to adjust lengthwise position of the temperature sensor being fixedly mounted on thermal seal in stagnation cover, to allow temperature
Sensor is able to detect that the gas flow temperature of different location in stagnation cover, improves the accuracy of testing result.
2. by the cavity of guide sleeve and left side limit sleeve and the assembly of right side limit sleeve match in the way of, to temperature
The position change of sensor is limited, and is avoided the position of temperature sensor beyond presumptive area, is caused prohibited data detection true.
3. sealing ring resistant to high temperature, which is arranged, allows better tightness between left side limit sleeve and right side limit sleeve, the present apparatus is improved
Detection accuracy.
4. the O-ring seals of red copper material not only can be with high temperature resistant, but also red copper is relatively soft, and sealing effect is good, further
Improve the measurement accuracy of the present apparatus.
5. by setting spring, allow between thermal seal and right side limit sleeve after being connected through a screw thread can also have it is pre-
Clamp force prevents thermal seal and right side limit sleeve Relative sliding, the position of temperature sensor is caused to change, influences to measure
Precision.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is stagnation cover structure schematic diagram in Fig. 1；
Fig. 3 is guide sleeve cross-sectional view in Fig. 1；
Fig. 4 is left side limit sleeve cross-sectional view in Fig. 1；
Fig. 5 is right side limit sleeve cross-sectional view in Fig. 1.
Appended drawing reference: 1- stagnation cover, 2- air inlet, 3- venthole, 4- temperature sensor, the left side 5- limit sleeve, 6- sealing
Circle, 7- guide sleeve, the right side 8- limit sleeve, 9- spring, 10- 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, a kind of total temperature probe that can adjust temperature sensor location, including stagnation cover 1, temperature are passed
Sensor 4 and thermal seal 10, the stagnation cover 1 are hollow tubular structure, 1 left end of the stagnation cover sealing, stagnation cover 1
Right end is sealed by thermal seal 10, and the thermal seal 10 is fixedly connected with stagnation cover 1, and the temperature sensor 4 is examined
It surveys end to be arranged in stagnation cover 1, the shank of temperature sensor 4 is embedded in thermal seal 10, and the left end of stagnation cover 1 is provided with
The air inlet 2 connected with the hollow space of stagnation cover 1, the right end of stagnation cover 1 are provided with and stagnation cover at temperature sensor 4
The venthole 3 that 1 hollow space is connected；The right side with stagnation cover 1 is provided between the stagnation cover 1 and the thermal seal 10
The right side limit sleeve 8 holding the left side limit sleeve 5 of welding and being bolted to connection with left side limit sleeve 5, the insulation are close
It is provided with external screw thread on sealing 10, the interior spiral shell to match with the external screw thread on thermal seal 10 is provided on right side limit sleeve 8
Line.Thermal seal 10 is threadedly coupled with right side limit sleeve 8, it can be by turning thermal seal 10 or right side
Lengthwise position of the temperature sensor 4 in stagnation cover 1 that limit sleeve 8 is fixedly mounted on thermal seal 10 with adjusting, thus
It allows temperature sensor 4 to be able to detect that the gas flow temperature of different location in stagnation cover 1, improves the accuracy of testing result.
Thermal seal 10 is set on the cylinder of tower, in the small diameter and larger diameter shape of thermal seal 10
At thrust surface, movable sleeve is equipped with spring 9, the left end of spring 9 and the right end of right side limit sleeve 8 in outer circle on thermal seal 10
Face contact, the right end of spring 9 and the thrust face contact of thermal seal 10, or directly welded with thrust surface.By the way that bullet is arranged
Spring 9, pretightning force can also be had by allowing between thermal seal 10 and right side limit sleeve 8 after being connected through a screw thread, and prevent from being insulated close
Sealing 10 and 8 Relative sliding of right side limit sleeve, cause the position of temperature sensor 4 to change, influence measurement accuracy.
Embodiment 2
It is described further on the basis of embodiment 1, being arranged on the temperature sensor 4 can be in temperature sensing
The guide sleeve 7 to horizontally slip on device 4, the left end of temperature sensor 4 are fixedly installed the blocking that guide sleeve 7 can be stopped to skid off and stop
Pushing surface, the i.e. head diameter of temperature sensor 4 are greater than the diameter of shank, and the shank with temperature sensor 4 is provided on guide sleeve 7
The through-hole of outer circle clearance fit, 4 activity of temperature sensor run through left side limit sleeve 5 and right side limit sleeve 8, left side limit sleeve 5
With the cavity for being provided with receiving guide sleeve 7 in the assembly of right side limit sleeve 8.Utilize guide sleeve 7 and left side limit sleeve 5 and right side
The mode that the cavity of the assembly of limit sleeve 8 matches limits the position change of temperature sensor 4, temperature is avoided to pass
The position of sensor 4 exceeds presumptive area, causes prohibited data detection true.
The left end of left side limit sleeve 5 is provided with limit stepped hole, and limit stepped hole is described through entire left side limit sleeve 5
Limit stepped hole successively includes the circle with the cylindrical hole one of 4 outer circle clearance fit of sensor, 7 sliding of restricted guidance set from left to right
Taper hole and cylindrical hole two with the outer circle clearance fit of guide sleeve 7 are also symmetrically arranged with limit ladder on right side limit sleeve 8
Hole, limit stepped hole and right side after left side limit sleeve 5 is fixedly connected with right side limit sleeve 8 by screw, on left side limit sleeve 5
Limit stepped hole on limit sleeve 8 together constitutes the above-mentioned cavity that can accommodate guide sleeve 7, while the both ends of guide sleeve 7 are equal
It is provided with the conical round table to match with conical bore.
Embodiment 3
It is described further, is arranged between the left side limit sleeve 5 and right side limit sleeve 8 on the basis of embodiment 1
There is sealing ring 6 resistant to high temperature, the connection fitting position setting sealing ring 6 of left side limit sleeve 5 and right side limit sleeve 8 is sealed patch
It closes.Be arranged sealing ring 6 resistant to high temperature allow left side limit sleeve 5 and right side limit sleeve 8 between better tightness, improve the inspection of the present apparatus
Survey precision.
Sealing ring 6 is the O-ring seals of red copper material.The O-ring seals of red copper material not only can be with high temperature resistant, Er Qiezi
Copper is relatively soft, and sealing effect is good, further increases the measurement accuracy of the present apparatus.
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 (6)
1. one kind can adjust the total temperature probe of temperature sensor location, including stagnation cover (1), temperature sensor (4) and absolutely
Heat seal (10), the stagnation cover (1) are hollow tubular structure, stagnation cover (1) the left end sealing, the right side of stagnation cover (1)
End is sealed by thermal seal (10), and the thermal seal (10) is fixedly connected with stagnation cover (1), the temperature sensor
(4) test side setting is in stagnation cover (1), and temperature sensor (4) is fixed on thermal seal (10), a left side for stagnation cover (1)
End is provided with the air inlet (2) connected with the hollow space of stagnation cover (1), and the right end of stagnation cover (1) is close to temperature sensor (4)
Place is provided with the venthole (3) connected with the hollow space of stagnation cover (1)；It is characterized by: the stagnation cover (1) and it is described absolutely
It is provided with the position-limit mechanism of distance of stretch out and draw back of the limit temperature sensor (4) in stagnation cover (1) between heat seal (10), limits
Mechanism successively includes the left side limit sleeve (5) being fixedly connected with stagnation cover (1) and consolidates with left side limit sleeve (5) from left to right
Surely the right side limit sleeve (8) connected is provided with external screw thread on the thermal seal (10), and right side limit sleeve is provided on (8)
The internal screw thread to match with the external screw thread on thermal seal (10).
2. the total temperature probe according to claim 1 that temperature sensor location can be adjusted, it is characterised in that: temperature sensing
Device (4) activity runs through left side limit sleeve (5) and right side limit sleeve (8), the group of left side limit sleeve (5) and right side limit sleeve (8)
Cavity is provided in zoarium, being provided in cavity can prevent the test side of temperature sensor (4) to be moved to left side limit sleeve (5)
Interior guide sleeve (7), the guide sleeve (7) are movably set on temperature sensor (4), and the left end of temperature sensor (4) is fixed
It is provided with the blocking thrust surface that guide sleeve (7) can be stopped to skid off.
3. the total temperature probe according to claim 2 that temperature sensor location can be adjusted, it is characterised in that: the left side
Sealing ring resistant to high temperature (6) are provided between limit sleeve (5) and right side limit sleeve (8).
4. the total temperature probe according to claim 3 that temperature sensor location can be adjusted, it is characterised in that: sealing ring
It (6) is the O-ring seals of red copper material.
5. the total temperature probe according to claim 1 that temperature sensor location can be adjusted, it is characterised in that: the insulation
Movable sleeve is equipped with spring (9) in outer circle on sealing element (10), the left end of the spring (9) and the right side of right side limit sleeve (8)
Contact, the right end of spring (9) are fixedly connected with thermal seal (10).
6. the total temperature probe according to claim 2 that temperature sensor location can be adjusted, it is characterised in that: left side limit
The left end of set (5) is provided with limit stepped hole, limit stepped hole through entire left side limit sleeve (5), the limit stepped hole from
From left to right successively include with the cylindrical hole one of sensor (4) outer circle clearance fit, restricted guidance set (7) slide conical bore, with
And the cylindrical hole two with the outer circle clearance fit of guide sleeve (7), right side limit sleeve are also symmetrically arranged with limit stepped hole on (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821902166.2U CN209181938U (en) | 2018-11-19 | 2018-11-19 | A kind of total temperature probe that can adjust temperature sensor location |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821902166.2U CN209181938U (en) | 2018-11-19 | 2018-11-19 | A kind of total temperature probe that can adjust temperature sensor location |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209181938U true CN209181938U (en) | 2019-07-30 |
Family
ID=67373334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821902166.2U Expired - Fee Related CN209181938U (en) | 2018-11-19 | 2018-11-19 | A kind of total temperature probe that can adjust temperature sensor location |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209181938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146787A (en) * | 2020-10-29 | 2020-12-29 | 黑龙江普金科技有限公司 | Sensing device capable of keeping sealing and adjusting and fixing temperature measurement position |
| CN116892965A (en) * | 2023-09-11 | 2023-10-17 | 浙江力夫传感技术有限公司 | Probe structure of temperature and humidity transmitter |
-
2018
- 2018-11-19 CN CN201821902166.2U patent/CN209181938U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146787A (en) * | 2020-10-29 | 2020-12-29 | 黑龙江普金科技有限公司 | Sensing device capable of keeping sealing and adjusting and fixing temperature measurement position |
| CN116892965A (en) * | 2023-09-11 | 2023-10-17 | 浙江力夫传感技术有限公司 | Probe structure of temperature and humidity transmitter |
| CN116892965B (en) * | 2023-09-11 | 2024-01-16 | 浙江力夫传感技术有限公司 | Probe structure of temperature and humidity transmitter |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190730 Termination date: 20211119 |