CN112461396A - Armored platinum wire total temperature sensor - Google Patents
Armored platinum wire total temperature sensor Download PDFInfo
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- CN112461396A CN112461396A CN202011289786.5A CN202011289786A CN112461396A CN 112461396 A CN112461396 A CN 112461396A CN 202011289786 A CN202011289786 A CN 202011289786A CN 112461396 A CN112461396 A CN 112461396A
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- framework
- platinum wire
- shell
- armored platinum
- total temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
- G01K7/20—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
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- Measuring Volume Flow (AREA)
Abstract
The invention provides an armored platinum wire total temperature sensor which comprises a shell, a base, a framework, a supporting sheet, a supporting frame, an armored platinum wire, a switching component and a hoop. The shell is of a cylindrical structure, and the outer wall of the shell is fixedly connected with the base; the framework is a cylinder structure with a flow guide hole in the middle; the design of the flow guide hole is used for improving the response time, and the framework is fixedly connected with the inner wall of the shell through the support sheet and the support frame; the framework is provided with a diversion hole, and an armored platinum wire is wound at the position of the diversion hole and used for measuring the temperature of gas flowing through the framework; the cross section of the support frame is of a Y-shaped special-shaped cone structure, a plurality of arc-shaped grooves are formed in the contact part of the support frame and the inner wall of the shell along the circumferential direction, the support frame and the shell are fixed through screws, a certain inlet-outlet area ratio is formed between the support frame and the shell, the total temperature recovery rate can be controlled, and compared with a similar action structure, the structure has a certain structure anti-icing capacity and improves the anti-icing performance; the armored platinum wire is used for switching the internal core wire through the switching component to lead out a temperature signal; the clamp is fixed with the framework and used for fixing the switching component.
Description
Technical Field
The invention belongs to the technical field of design of aviation sensors, and relates to an armored platinum wire total temperature sensor.
Background
The prior total temperature sensor usually adopts an exposed platinum wire and a film platinum resistor as temperature sensing elements, the exposed platinum wire can improve the response time as the temperature sensing elements, but the problems of complex process and relatively low reliability exist in the insulating treatment of a supporting structural member if the supporting structural member adopts a metal material, and if the supporting structural member adopts a non-metal material, the subsequent heat conduction path design, the structural packaging and the like are often more complex, the assembly difficulty of products is increased, and the film platinum resistor as the temperature sensing element has a relatively simple structure but has a relatively slow response time. The object of the present invention is to further develop and improve the total temperature sensors of the prior art.
Disclosure of Invention
The purpose of the invention is as follows: the armored platinum wire total temperature sensor adopts the armored platinum wire as a temperature sensing element, and has the characteristics of long service life, better double-channel consistency, quick dynamic response and high total temperature recovery rate.
The technical scheme of the invention is as follows: the armored platinum wire temperature measuring structure comprises a shell (1), a base (2), a framework (3), a supporting sheet (4), a supporting frame (5), an armored platinum wire (6), an adapter part (7) and a clamp (8);
the shell (1) is of a cylindrical structure, and the outer wall of the shell (1) is fixedly connected with the base (2); the framework (3) is of a cylindrical structure, and a plurality of flow guide holes are uniformly formed in the middle section of the cylinder along the circumferential direction; the framework (3) is fixedly connected with the inner wall of the shell (1) through a support sheet (4) and a support frame (5), and the framework (3) and the shell (1) are coaxially arranged; the outer surface of the framework (3) is provided with a diversion hole, and an armored platinum wire (6) is wound at the position of the diversion hole and fixed for measuring the gas temperature; gas flows in from one end of the shell (1) and the framework (3) and flows out from the other end of the shell (1) and the framework (3);
the supporting frame (5) is of a special-shaped cone structure with a Y-shaped section, and a plurality of arc-shaped grooves are formed in the contact part of the supporting frame and the inner wall of the shell 1 along the circumferential direction to form a certain inlet-outlet area ratio for controlling the total temperature recovery rate;
the armored platinum wire (6) is a four-core double-loop, and an internal core wire is connected in a switching way through a switching component (7) to realize the leading-out of a temperature signal; the clamp (8) is fixed with the framework (3) in a welding mode and used for fixing the adapter component (7).
The invention has the beneficial effects that: the invention adopts the armored platinum wire as the temperature sensing material, the interior of the temperature sensing material is of a four-core double-loop structure, the reliability of the product can be effectively improved, the natural and mechanical environment resistance can be enhanced, the internal double-loop structure can ensure higher double-channel consistency, and meanwhile, the product can be ensured to have higher total temperature recovery rate through proper adjustment of the supporting frame.
Drawings
FIG. 1 is a schematic diagram of an armored platinum wire total temperature sensor;
FIG. 2 is a cross-sectional view of an armored platinum wire total temperature sensor;
FIG. 3 is a schematic view of a sheathed platinum wire total temperature sensor support frame;
FIG. 4 is a schematic diagram of an armored platinum wire total temperature sensor skeleton.
Detailed Description
The technical scheme of the invention is explained in detail by combining the drawings and the specific embodiment.
Fig. 1 is a schematic diagram of an armored platinum wire temperature measurement structure, fig. 2 is a sectional view of the armored platinum wire temperature measurement structure, and as shown in fig. 1 and fig. 2, the armored platinum wire temperature measurement structure of the embodiment includes a shell (1), a base (2), a framework (3), a support sheet (4), a support frame (5), an armored platinum wire (6), an adapter component (7) and a clamp (8).
The shell (1) is of a cylindrical structure, and the outer wall of the shell (1) is fixedly connected with the base (2); the framework (3) is of a cylindrical structure with a plurality of flow guide holes in the middle section, the framework (3) is fixedly connected with the inner wall of the shell (1) through a support sheet (4) and a support frame (5), and the framework (3) and the shell (1) are coaxially arranged; the outer surface of the framework (3) is provided with a diversion hole, and an armored platinum wire (6) is wound at the position of the diversion hole, is fixed in a welding mode and is used for measuring the gas temperature; gas flows in from one end of the shell (1) and the framework (3) and flows out from the other end of the shell (1) and the framework (3);
the supporting frame (5) is of a special-shaped cone structure with a Y-shaped section, and a plurality of arc-shaped grooves are formed in the contact part of the supporting frame and the inner wall of the shell 1 along the circumferential direction to form a certain inlet-outlet area ratio for controlling the total temperature recovery rate; each arc-shaped groove is in rounded transition along the joint of the end surface of the arc-shaped groove and the middle framework (3) so as to improve the gas circulation efficiency.
The armored platinum wire (6) is a four-core double-loop, and an internal core wire is connected in a switching way through a switching component (7) to realize the leading-out of a temperature signal; the clamp (8) is fixed with the framework (3) in a welding mode and used for fixing the adapter component (7).
In the specific implementation process, on the basis of the structural design, the armored platinum wire (6) is a four-core double-loop, is wound on the position of the outer surface of the framework (3) and is provided with a flow guide hole, the response time is prolonged, and the armored platinum wire is fixed in a welding mode.
On the basis of the design of the armored platinum wire total temperature sensor, the armored platinum wire (6) is connected with an internal core wire in a switching way through a switching component (7), so that the temperature signal is led out.
On the basis of the design of the armored platinum wire total temperature sensor, the armored platinum wire (6) is designed in a dual-redundancy mode, and has good consistency.
On the basis of the design of the armored platinum wire total temperature sensor, the framework (3) is of a cylindrical structure with a plurality of flow guide holes in the middle section, and is fixedly connected with the inner wall of the shell (1) through a support sheet (4) and a support frame (5) to form an internal flow field;
on the basis of the design of the armored platinum wire total temperature sensor, the supporting frame (5) is of a special-shaped cone structure with a Y-shaped section, the area of the arc-shaped groove is adjusted to control the air flow inlet and outlet area, the effect of controlling the total temperature recovery rate is achieved, meanwhile, the windward area is reduced through the conical design, and the purpose of structural anti-icing is achieved.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (8)
1. The armored platinum wire total temperature sensor is characterized by comprising a shell (1), a base (2), a framework (3), a support sheet (4), a support frame (5), an armored platinum wire (6), an adapter part (7) and a clamp (8);
the shell (1) is of a cylindrical structure, and the outer wall of the shell (1) is fixedly connected with the base (2); the framework (3) is of a cylindrical structure, and a plurality of flow guide holes are formed in the middle section of the cylinder; the framework (3) is fixedly connected with the inner wall of the shell (1) through a support sheet (4) and a support frame (5); an armored platinum wire (6) is wound and fixed on the periphery of the framework (3) and is used for measuring the temperature of gas flowing through; gas flows in from one end of the shell (1) and the framework (3) and flows out from the other end of the shell (1) and the framework (3);
the supporting frame (5) is of a special-shaped cone structure with a Y-shaped section, a plurality of arc-shaped grooves are formed in the contact part of the supporting frame and the inner wall of the shell (1) along the circumferential direction and are fixed through screws, and the supporting frame and the shell (1) form a certain inlet-outlet area ratio and are used for controlling the total temperature recovery rate;
the inner core wire of the armored platinum wire (6) is insulated from the outside, and the inner core wire is connected in a switching way through a switching component (7) to realize the leading-out of a temperature signal; the clamp (8) is connected with the framework (3) and used for fixing the adapter part (7).
2. The armored platinum wire total temperature sensor according to claim 1, wherein the armored platinum wire (6) is of a four-core double-loop design.
3. The armored platinum wire total temperature sensor according to claim 1, wherein the framework (3) is of a cylindrical structure, and a plurality of flow guide holes are uniformly formed in the middle section of the cylinder along the circumferential direction; the inner flow field is formed by fixedly connecting the support sheet (4) and the support frame (5) with the inner wall of the shell (1).
4. The armored platinum wire total temperature sensor according to claim 3, wherein the armored platinum wire (6) is wound on the position of the framework (3) where a flow guide hole is formed.
5. The armored platinum wire total temperature sensor according to claim 4, wherein the flow guide holes are uniformly distributed along the circumferential direction of the framework (3).
6. The armored platinum wire total temperature sensor according to claim 4, wherein the armored platinum wire (6) is fixed on the framework (3) by welding.
7. The armored platinum wire total temperature sensor according to claim 1, wherein the support frame (5) is a special-shaped cone structure with a Y-shaped section, 3 arc-shaped grooves are formed in the contact part of the support frame and the inner wall of the shell 1 along the circumferential direction, and each arc-shaped groove is in rounded transition along the connection part of the end face of the arc-shaped groove and the middle framework (3).
8. The armored platinum wire total temperature sensor according to claim 1, wherein the hoop (8) and the framework (3) are fixedly connected into a whole by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289786.5A CN112461396B (en) | 2020-11-17 | 2020-11-17 | Armored platinum wire total temperature sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289786.5A CN112461396B (en) | 2020-11-17 | 2020-11-17 | Armored platinum wire total temperature sensor |
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| Publication Number | Publication Date |
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| CN112461396A true CN112461396A (en) | 2021-03-09 |
| CN112461396B CN112461396B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011289786.5A Active CN112461396B (en) | 2020-11-17 | 2020-11-17 | Armored platinum wire total temperature sensor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB883779A (en) * | 1960-02-10 | 1961-12-06 | Rosemount Eng Co Ltd | A gas temperature probe |
| US4403872A (en) * | 1979-11-05 | 1983-09-13 | Rosemount Inc. | Flow device for sensors |
| US5653538A (en) * | 1995-06-07 | 1997-08-05 | Rosemount Aerospace Inc. | Total temperature probe |
| WO2015017035A1 (en) * | 2013-08-01 | 2015-02-05 | Unison Industries, Llc | Fast response temperature sensor using a polyimide enclosed rtd |
| CN206330685U (en) * | 2016-12-08 | 2017-07-14 | 苏州长风航空电子有限公司 | A kind of quick response temperature measuring equipment |
| CN108387323A (en) * | 2018-03-02 | 2018-08-10 | 成都凯天电子股份有限公司 | Triple backup temperature transducers |
| CN207894533U (en) * | 2018-03-02 | 2018-09-21 | 成都凯天电子股份有限公司 | The platinum resistance temperature sensor of triplex redundance measuring temperature is provided for engine mouth |
| JP2019113538A (en) * | 2017-12-25 | 2019-07-11 | 株式会社デンソー | Physical quantity measuring device |
-
2020
- 2020-11-17 CN CN202011289786.5A patent/CN112461396B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB883779A (en) * | 1960-02-10 | 1961-12-06 | Rosemount Eng Co Ltd | A gas temperature probe |
| US4403872A (en) * | 1979-11-05 | 1983-09-13 | Rosemount Inc. | Flow device for sensors |
| US5653538A (en) * | 1995-06-07 | 1997-08-05 | Rosemount Aerospace Inc. | Total temperature probe |
| WO2015017035A1 (en) * | 2013-08-01 | 2015-02-05 | Unison Industries, Llc | Fast response temperature sensor using a polyimide enclosed rtd |
| CN206330685U (en) * | 2016-12-08 | 2017-07-14 | 苏州长风航空电子有限公司 | A kind of quick response temperature measuring equipment |
| JP2019113538A (en) * | 2017-12-25 | 2019-07-11 | 株式会社デンソー | Physical quantity measuring device |
| CN108387323A (en) * | 2018-03-02 | 2018-08-10 | 成都凯天电子股份有限公司 | Triple backup temperature transducers |
| CN207894533U (en) * | 2018-03-02 | 2018-09-21 | 成都凯天电子股份有限公司 | The platinum resistance temperature sensor of triplex redundance measuring temperature is provided for engine mouth |
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|---|---|
| CN112461396B (en) | 2023-05-23 |
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