CN114413940A - Ultra-high temperature sensor - Google Patents
Ultra-high temperature sensor Download PDFInfo
- Publication number
- CN114413940A CN114413940A CN202210098450.3A CN202210098450A CN114413940A CN 114413940 A CN114413940 A CN 114413940A CN 202210098450 A CN202210098450 A CN 202210098450A CN 114413940 A CN114413940 A CN 114413940A
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- China
- Prior art keywords
- outer shell
- shell
- coil
- magnetic rod
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 239000003292 glue Substances 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses an ultra-high temperature sensor, which comprises an outer shell; the magnetic rod is hermetically arranged in the outer shell; the high-temperature ceramic coil is wound on the magnetic rod; the permanent magnet is matched with the other end of the magnetic rod; a ceramic insulating sheet; the pin needle is inserted on the ceramic insulating sheet; the connecting contact pin is fixed at the other end of the pin; and a high temperature flexible cable passing through one end of the outer housing. According to the invention, the high-temperature ceramic coil, namely the coil wound by the high-temperature ceramic wire, is adopted, and the permanent magnet and the high-temperature flexible cable are encapsulated in the outer shell through the cement glue, so that two ends of the outer shell are blocked by the encapsulating material used in a high-temperature environment, the problem that the sensor is used in a 400 ℃ environment is solved, the sensor has the characteristic of ultrahigh temperature, the pin needle is sealed and fixed in the outer shell through glass sintering, and the moisture absorption problem caused by encapsulation by the cement glue is solved.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to an ultrahigh temperature sensor.
Background
The aero-engine needs to use parameters such as rotating speed, linear displacement and angular displacement when in use, and needs to use a rotating speed sensor, a linear displacement sensor, an angular displacement sensor and the like, and the sensors are installed near engine blades, rotating shafts, casings or fuels, so that the environment is severe, the use temperature is high, the vibration is strong, pollutants exist and the like, most of the sensors need to be sealed and fixed by pouring glue, the use temperature of the commonly used pouring glue is low, the temperature resistance is below 300 ℃, and the requirements cannot be met in the ultra-high temperature application field (such as 400 ℃ ultra-high temperature environment).
In view of the above, the present inventors have made extensive studies and research on various defects and inconveniences caused by the imperfect structural design of the sensor.
Disclosure of Invention
The invention aims to provide an ultrahigh temperature sensor.
In order to achieve the above purpose, the solution of the invention is:
an ultra-high temperature sensor, the sensor comprising an outer housing; the magnetic rod is hermetically arranged in the outer shell, and one end of the magnetic rod extends out of the outer shell; the high-temperature ceramic coil is wound on the magnetic rod; the permanent magnet is matched with the other end of the magnetic rod and is encapsulated in the outer shell through cement glue; the ceramic insulation sheet is arranged in the middle of the inner part of the outer shell; the pin needle is inserted on the ceramic insulating sheet and is fixed in the outer shell through glass sintering and sealing, and one end of the pin needle is connected with the high-temperature ceramic coil; the connecting contact pin is fixed at the other end of the pin; and the high-temperature flexible cable penetrates through one end of the outer shell, is connected with the connecting pin and is encapsulated in the outer shell through cement glue.
Preferably, the shell body comprises a coil shell, an end cover, a connecting shell and a tail attachment, and the coil shell, the end cover, the connecting shell and the tail attachment are fixed together through laser welding in sequence.
Preferably, the outer shell further comprises a retainer ring, the retainer ring is arranged at the end of the coil shell, the magnetic rod is inserted into the retainer ring, and the magnetic rod, the retainer ring and the coil shell are fixed together through laser welding in sequence.
Preferably, the one end of connecting pin is equipped with the connecting rod, and the other end is equipped with the U type and participates in, the connecting rod passes through water flame welded fastening with high temperature flexible cable, the U type is pegged graft and is cup jointed on pin needle to through water flame welded fastening.
After the scheme is adopted, the high-temperature ceramic coil, namely the coil wound by the high-temperature ceramic wire, is adopted, and the permanent magnet and the high-temperature flexible cable are encapsulated in the outer shell through the cement glue, so that the two ends of the outer shell are both blocked by the encapsulating material used in the high-temperature environment, the problem that the sensor is used in the environment of 400 ℃ is solved, the sensor has the characteristic of ultrahigh temperature, the pin needle is sealed and fixed in the outer shell through glass sintering, and the moisture absorption problem caused by the encapsulation of the cement glue is solved.
Drawings
FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, a preferred embodiment of the ultra high temperature sensor of the present invention comprises an outer shell 1; the magnetic rod 2 is hermetically arranged in the outer shell 1, and one end of the magnetic rod 2 extends out of the outer shell 1; the high-temperature ceramic coil 3 is wound on the magnetic rod 2; the permanent magnet 4 is matched with the other end of the magnetic rod 2 and is encapsulated in the outer shell 1 through cement glue 5; the ceramic insulation sheet 6 is arranged in the middle of the inner part of the outer shell 1; the pin needle 7 is inserted on the ceramic insulating sheet 6 and is hermetically fixed in the outer shell 1 through glass sintering 8, and one end of the pin needle 7 is connected with the high-temperature ceramic coil 3; the connecting pin 9 is fixed at the other end of the pin 7; and the high-temperature flexible cable 10 penetrates through one end of the outer shell 1, is connected with the connecting pin 9, and is encapsulated in the outer shell 1 through cement glue 5.
The working principle of the invention is as follows: the sensor of the invention can convert the rotating speed of the tested tone wheel (or rotating shaft) into voltage and frequency signals related to the rotating speed. The sensor generates a constant magnetic field by the permanent magnet 4, which is converged by the magnetic rod 2 and passes through the high temperature ceramic coil 3 on the magnetic rod 2, and then returns to the permanent magnet 4 in the space outside the probe. When the teeth (or the protrusions of the rotating shaft) of the measured tone wheel are close to the sensor probe, the magnetic field distribution near the sensor probe is changed, so that the magnetic flux in the high-temperature ceramic coil 3 is changed, and a forward output voltage is generated. As the tone wheel (or shaft) rotates, the teeth or projections move closer and further away from the transducer probe, and the transducer generates a signal related to the frequency of the rotational speed.
The key point of the invention is that the high-temperature ceramic coil 3, namely the coil wound by the high-temperature ceramic wire, is adopted, and the permanent magnet 4 and the high-temperature flexible cable 10 are encapsulated in the outer shell 1 through the cement glue 5, so that two ends of the outer shell 1 are both blocked by the encapsulating material used in the high-temperature environment, the problem that the sensor is used in the environment of 400 ℃ is solved, the sensor has the characteristic of ultra-high temperature, the pin 7 is sealed and fixed in the outer shell 1 through the glass sintering 8, and the moisture absorption problem caused by encapsulation by the cement glue 5 is solved.
The outer shell 1 comprises a coil shell 11, an end cover 12, a connecting shell 13 and a tail piece 14, wherein the coil shell 11, the end cover 12, the connecting shell 13 and the tail piece 14 are fixed together sequentially through laser welding. The outer shell 1 is divided into the coil shell 11, the end cover 12, the connecting shell 13 and the tail attachment 14, so that other components are favorably mounted, and the sensor is convenient to mount; and the laser welding has the advantages of firm structure and high temperature resistance.
The outer shell 1 further comprises a retainer ring 15, the retainer ring 15 is arranged at the end of the coil shell 11, the magnetic rod 2 is inserted into the retainer ring 15, and the magnetic rod 2, the retainer ring 15 and the coil shell 11 are fixed together sequentially through laser welding. The retainer ring 15 is arranged, so that the high-temperature ceramic coil 3 is protected and positioned; and the laser welding has the advantages of firm structure and high temperature resistance.
The one end of above-mentioned connecting pin 9 is equipped with connecting rod 91, and the other end is equipped with the U type and participates in 92, and connecting rod 91 passes through water flame welded fastening with high temperature flexible cable 10, and the U type is pegged graft and is cup jointed on pin needle 7 to through water flame welded fastening. It has the advantage of joint strength.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as may be appropriate to those skilled in the art without departing from the scope of the invention.
Claims (4)
1. An ultra-high temperature sensor, characterized in that: the sensor comprises
An outer housing;
the magnetic rod is hermetically arranged in the outer shell, and one end of the magnetic rod extends out of the outer shell;
the high-temperature ceramic coil is wound on the magnetic rod;
the permanent magnet is matched with the other end of the magnetic rod and is encapsulated in the outer shell through cement glue;
the ceramic insulation sheet is arranged in the middle of the inner part of the outer shell;
the pin needle is inserted on the ceramic insulating sheet and is fixed in the outer shell through glass sintering and sealing, and one end of the pin needle is connected with the high-temperature ceramic coil;
the connecting contact pin is fixed at the other end of the pin;
and the high-temperature flexible cable penetrates through one end of the outer shell, is connected with the connecting pin and is encapsulated in the outer shell through cement glue.
2. The ultra-high temperature sensor of claim 1, wherein: the shell body comprises a coil shell, an end cover, a connecting shell and a tail attachment, wherein the coil shell, the end cover, the connecting shell and the tail attachment are fixed together through laser welding in sequence.
3. The ultra-high temperature sensor according to claim 2, wherein: the outer shell further comprises a check ring, the check ring is arranged at the end of the coil shell, the magnetic rod is inserted into the check ring, and the magnetic rod, the check ring and the coil shell are fixed together through laser welding in sequence.
4. The ultra-high temperature sensor of claim 1, wherein: the one end of connecting pin is equipped with the connecting rod, and the other end is equipped with the U type and participates in, the connecting rod passes through water flame welded fastening with high temperature flexible cable, the U type is pegged graft and is cup jointed on pin needle to through water flame welded fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210098450.3A CN114413940A (en) | 2022-01-27 | 2022-01-27 | Ultra-high temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210098450.3A CN114413940A (en) | 2022-01-27 | 2022-01-27 | Ultra-high temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114413940A true CN114413940A (en) | 2022-04-29 |
Family
ID=81279878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210098450.3A Pending CN114413940A (en) | 2022-01-27 | 2022-01-27 | Ultra-high temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114413940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4296687A1 (en) * | 2022-06-22 | 2023-12-27 | Honeywell International Inc. | Aircraft engine sensing apparatus with insulated connection wires |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977423A (en) * | 2015-06-19 | 2015-10-14 | 中国航空工业集团公司上海航空测控技术研究所 | Magneto-electric speed sensor |
| US20160061637A1 (en) * | 2014-09-02 | 2016-03-03 | Infineon Technologies Ag | Integrated angle sensing device |
| CN110061384A (en) * | 2019-04-24 | 2019-07-26 | 中广核研究院有限公司 | A kind of hermetically-sealed electrical connector |
| CN211263511U (en) * | 2020-02-28 | 2020-08-14 | 宁波斯林科电子科技有限公司 | Automobile engine speed sensor |
| CN214041444U (en) * | 2020-10-14 | 2021-08-24 | 慧石（上海）测控科技有限公司 | Rotating speed sensor |
-
2022
- 2022-01-27 CN CN202210098450.3A patent/CN114413940A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160061637A1 (en) * | 2014-09-02 | 2016-03-03 | Infineon Technologies Ag | Integrated angle sensing device |
| CN104977423A (en) * | 2015-06-19 | 2015-10-14 | 中国航空工业集团公司上海航空测控技术研究所 | Magneto-electric speed sensor |
| CN110061384A (en) * | 2019-04-24 | 2019-07-26 | 中广核研究院有限公司 | A kind of hermetically-sealed electrical connector |
| CN211263511U (en) * | 2020-02-28 | 2020-08-14 | 宁波斯林科电子科技有限公司 | Automobile engine speed sensor |
| CN214041444U (en) * | 2020-10-14 | 2021-08-24 | 慧石（上海）测控科技有限公司 | Rotating speed sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4296687A1 (en) * | 2022-06-22 | 2023-12-27 | Honeywell International Inc. | Aircraft engine sensing apparatus with insulated connection wires |
| US11927104B2 (en) | 2022-06-22 | 2024-03-12 | Honeywell International Inc. | Aircraft engine sensing apparatus with insulated connection wires |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220429 |
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| RJ01 | Rejection of invention patent application after publication |