CN112461396B - Armored platinum wire total temperature sensor - Google Patents
Armored platinum wire total temperature sensor Download PDFInfo
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- CN112461396B CN112461396B CN202011289786.5A CN202011289786A CN112461396B CN 112461396 B CN112461396 B CN 112461396B CN 202011289786 A CN202011289786 A CN 202011289786A CN 112461396 B CN112461396 B CN 112461396B
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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, an adapter component and a clamp. 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 diversion hole at the middle position; the design of the diversion hole is used for improving response time, and the framework is fixedly connected with the inner wall of the shell through the supporting sheet and the supporting frame; the framework is provided with a diversion hole position, and an armored platinum wire is wound on the diversion hole position and is used for measuring the temperature of flowing gas; the cross section of the support frame is of a Y-shaped abnormal cone structure, a plurality of arc grooves are formed in the contact part with the inner wall of the shell along the circumferential direction, the arc grooves are fixed by screws, a certain inlet-outlet area ratio is formed between the arc grooves and the shell, and the arc grooves can be used for controlling the total temperature recovery rate. The armored platinum wire is used for switching the internal core wire through the switching part, so that the temperature signal is led out; the clamp is fixed with the skeleton for fixed switching part.
Description
Technical Field
The invention belongs to the technical field of aviation sensor design, and relates to an armored platinum wire total temperature sensor.
Background
The prior art provides high total temperature recovery rate, quick response time, long service life and better dual-channel consistency technical performance for the total temperature sensor, the prior total temperature sensor usually adopts a bare platinum wire and a thin film platinum resistor as a temperature sensing element, the bare platinum wire can improve the response time as the temperature sensing element, but the problem of complex process and relatively low reliability exists in the insulation treatment of the supporting structural member if the supporting structural member adopts a metal material, and if the supporting structural member adopts a nonmetallic material, the design of a subsequent heat conduction path, the structural encapsulation and the like are often complicated, the assembly difficulty of a product is increased, and the thin film platinum resistor as the temperature sensing element has relatively simple structure but has the problem of slower response time. It is an object of the present invention to provide further developments and improvements to prior art total temperature sensors.
Disclosure of Invention
The purpose of the invention is that: the armored platinum wire total temperature sensor has the advantages that the armored platinum wire is adopted as a temperature sensing element, and the armored platinum wire total temperature sensor has the characteristics of long service life, high dual-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 piece (4), a supporting frame (5), an armored platinum wire (6), a switching 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 diversion 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 the supporting sheet (4) and the supporting 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 position wound with an armored platinum wire (6) and fixed for measuring the gas temperature; the 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 support frame (5) is a special cone structure with a Y-shaped section, a plurality of arc grooves are formed in the contact part with the inner wall of the shell 1 along the circumferential direction, a certain inlet-outlet area ratio is formed, and the support frame is used for controlling the total temperature recovery rate;
the armored platinum wire (6) is a four-core double-loop, and an internal core wire is switched through a switching part (7) to realize temperature signal extraction; the clamp (8) is fixed with the framework (3) in a welding mode and is used for fixing the switching component (7).
The invention has the beneficial effects that: the invention adopts the armored platinum wire as the temperature sensing material, and the inside of the armored platinum wire is of a four-core double-loop structure, so that the reliability of the product can be effectively improved, the natural and mechanical environment resistance can be enhanced, the inner double-loop structure can ensure higher dual-channel consistency, and meanwhile, the product can be ensured to have higher total temperature recovery rate through proper adjustment of the support 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 an armored platinum wire total temperature sensor support frame;
fig. 4 is a schematic diagram of an armored platinum wire total temperature sensor backbone.
Detailed Description
The technical scheme of the invention is described in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of an armored platinum wire temperature measuring structure, fig. 2 is a sectional view of the armored platinum wire temperature measuring structure, and as shown in fig. 1 and 2, the armored platinum wire temperature measuring structure of the embodiment comprises a shell (1), a base (2), a framework (3), a supporting sheet (4), a supporting frame (5), an armored platinum wire (6), a switching 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 diversion holes at the middle section, the framework (3) is fixedly connected with the inner wall of the shell (1) through the supporting sheet (4) and the supporting 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 position wound with an armored platinum wire (6) and fixed in a welding mode for measuring the gas temperature; the 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 support frame (5) is a special cone structure with a Y-shaped section, a plurality of arc grooves are formed in the contact part with the inner wall of the shell 1 along the circumferential direction, a certain inlet-outlet area ratio is formed, and the support frame is used for controlling the total temperature recovery rate; each arc-shaped groove is in rounded transition along the end face of each arc-shaped groove to the joint of 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 switched through a switching part (7) to realize temperature signal extraction; the clamp (8) is fixed with the framework (3) in a welding mode and is used for fixing the switching 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 outer surface of the framework (3), is provided with a diversion hole, improves response time, and 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 used for switching an internal core wire through a switching component (7) so as to lead out a temperature signal.
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 diversion holes at the middle section, and is fixedly connected with the inner wall of the shell (1) through the supporting sheet (4) and the supporting frame (5) to form an internal flow field;
on the basis of the design of the armored platinum wire total temperature sensor, the support frame (5) is of a special cone structure with a Y-shaped section, the air flow inlet and outlet areas are controlled by adjusting the area of the arc-shaped groove, the effect of controlling the total temperature recovery rate is achieved, meanwhile, the windward area is reduced due to the conical design, and the anti-icing purpose of the structure is achieved.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by this patent.
Claims (6)
1. The armored platinum wire total temperature sensor is characterized by comprising a shell (1), a base (2), a framework (3), a supporting sheet (4), a supporting frame (5), an armored platinum wire (6), an adapting 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 diversion 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 the supporting sheet (4) and the supporting frame (5); an armored platinum wire (6) is fixedly wound on the periphery of the framework (3) and used for measuring the temperature of flowing gas; the 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 support frame (5) is a special cone structure with a Y-shaped section, a plurality of arc grooves are formed in the contact part with the inner wall of the shell (1) along the circumferential direction, and the arc grooves are fixed by screws, and form a certain inlet-outlet area ratio with the shell (1) for controlling the total temperature recovery rate;
the framework (3) is of a cylindrical structure, and a plurality of diversion 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); the support frame (5) is a special cone structure with a Y-shaped section, 3 arc grooves are formed in the contact part with the inner wall of the shell 1 along the circumferential direction, and each arc groove is in rounded transition along the joint part between the end face of each arc groove and the middle framework (3);
the inner core wire of the armored platinum wire (6) is insulated from the outside, and the inner core wire is switched through the switching part (7) to realize the temperature signal extraction; the clamp (8) is connected with the framework (3) and is used for fixing the switching component (7).
2. The armored platinum wire total temperature sensor according to claim 1, wherein the armored platinum wire (6) is of a four-core dual-circuit design.
3. The armored platinum wire total temperature sensor according to claim 1, wherein the armored platinum wire (6) is wound on the framework (3) at a position with a diversion hole.
4. The armored platinum wire total temperature sensor according to claim 3, wherein the diversion holes are uniformly distributed along the circumferential direction of the framework (3).
5. An armoured platinum wire total temperature sensor according to claim 3, characterised in that the armoured platinum wire (6) is fixed to the skeleton (3) by means of welding.
6. The armored platinum wire total temperature sensor according to claim 1, wherein the clamping hoop (8) and the framework (3) are fixedly connected into a whole through 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 CN112461396A (en) | 2021-03-09 |
| CN112461396B true CN112461396B (en) | 2023-05-23 |
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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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB883779A (en) * | 1960-02-10 | 1961-12-06 | Rosemount Eng Co Ltd | A gas temperature probe |
| WO2015017035A1 (en) * | 2013-08-01 | 2015-02-05 | Unison Industries, Llc | Fast response temperature sensor using a polyimide enclosed rtd |
| JP2019113538A (en) * | 2017-12-25 | 2019-07-11 | 株式会社デンソー | Physical quantity measuring device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN108387323A (en) * | 2018-03-02 | 2018-08-10 | 成都凯天电子股份有限公司 | Triple backup temperature transducers |
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2020
- 2020-11-17 CN CN202011289786.5A patent/CN112461396B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB883779A (en) * | 1960-02-10 | 1961-12-06 | Rosemount Eng Co Ltd | A gas temperature probe |
| WO2015017035A1 (en) * | 2013-08-01 | 2015-02-05 | Unison Industries, Llc | Fast response temperature sensor using a polyimide enclosed rtd |
| JP2019113538A (en) * | 2017-12-25 | 2019-07-11 | 株式会社デンソー | Physical quantity measuring device |
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| CN112461396A (en) | 2021-03-09 |
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