CN113203491A - Thermocouple temperature measuring slip ring for measuring temperature of rotating part - Google Patents
Thermocouple temperature measuring slip ring for measuring temperature of rotating part Download PDFInfo
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- CN113203491A CN113203491A CN202110459117.6A CN202110459117A CN113203491A CN 113203491 A CN113203491 A CN 113203491A CN 202110459117 A CN202110459117 A CN 202110459117A CN 113203491 A CN113203491 A CN 113203491A
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- thermocouple
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- binding post
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- 238000009529 body temperature measurement Methods 0.000 claims abstract description 11
- 239000003292 glue Substances 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 239000004065 semiconductor Substances 0.000 abstract description 6
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
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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
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to a thermocouple temperature measurement slip ring for measuring the temperature of a rotating part, which comprises a rotor, a first binding post, a signal processing unit, a stator, a second binding post, a core shaft, a conducting ring and an electric brush, wherein the rotor is fixedly connected with the rotating part provided with a thermocouple, one end of the first binding post is correspondingly connected with the thermocouple, and the other end of the first binding post is connected with the input end of the signal processing unit; the conducting ring is fixed at the upper end of the mandrel, and a conducting wire penetrates through the mandrel to be connected with the conducting ring and the signal processing single output end; the electric brush is arranged on the electric brush support and is in contact conduction with the conducting ring; the second terminal is arranged on the stator, and the brush is connected with the second terminal through a conducting wire. The temperature signal that passes through signal processing unit and measure the thermocouple at the rotating member side converts the analog signal into, then inserts the data acquisition equipment with the analog signal through the sliding ring, realizes the signal transmission of rotating part to fixed part, has avoided the thermocouple signal simultaneously because of introducing the signal distortion problem that other semiconductor materials arouse.
Description
Technical Field
The invention relates to a thermocouple temperature measurement slip ring, in particular to a thermocouple temperature measurement slip ring for measuring the temperature of a rotating part.
Background
Thermocouple thermometry is a temperature sensing probe commonly used in the field of temperature measurement, and its working principle is based on the difference between thermoelectric potentials generated at different temperatures of two different semiconductor materials to measure the temperature. Different types of thermocouples use different semiconductor materials and their thermoelectric voltage signals are millivolt-level.
At present, when a thermocouple is used for measuring temperature of a rotating part (such as a fan or a clutch), a third metal material needs to be connected into a thermocouple loop, and as long as the temperatures of two junctions of the materials are the same, the thermoelectric potential generated by the thermocouple is kept unchanged. However, in the actual test requirement, the third metal wire is generally connected only when the distance between the temperature measurement point and the data acquisition unit needs to be extended, and the condition that the temperatures of the two nodes are the same cannot be realized. Therefore, in actual tests, direct use of a wire extension thermocouple for temperature measurement mostly results in a measured temperature lower than the actual temperature, the lower value depending on the temperature difference at both ends of the extension wire. In order to truly restore the temperature of the measured rotating member, the problem of signal change of a thermoelectric potential signal of a thermocouple caused by access of different semiconductor materials must be solved.
Disclosure of Invention
In order to solve the problems, the invention provides a thermocouple temperature measuring slip ring for measuring the temperature of a rotating part, a temperature signal is converted into an analog quantity signal through a signal conversion circuit at the side of the rotating part, and the analog quantity signal is accessed into data acquisition equipment through the slip ring, so that the signal transmission from the rotating part to a fixed part is realized, and the problem of signal distortion caused by introducing other semiconductor materials into a thermocouple signal is avoided.
The technical scheme adopted by the invention is as follows: the utility model provides a thermocouple temperature measurement sliding ring for measuring rotating member temperature which characterized in that: the rotor is fixedly connected with a rotating piece provided with a thermocouple, the signal processing unit is arranged in the rotor, the first wiring terminal is arranged on the rotor, one end of the first wiring terminal is correspondingly connected with the thermocouple, and the other end of the first wiring terminal is connected with the input end of the signal processing unit;
the rotor is rotationally connected with the stator, the lower end of the mandrel is fixedly connected with the rotor, and the upper end of the mandrel extends into the cavity of the stator; a conducting ring and a brush support are arranged in the stator, the conducting ring is fixed at the upper end of the mandrel, and a conducting wire penetrates through the mandrel to be connected with the conducting ring and the signal processing single output end; the electric brush support is provided with an electric brush, and the electric brush is in contact conduction with the conducting ring; the second binding post is arranged on the stator, and the electric brush is connected with the second binding post through a conducting wire.
Preferably, the signal processing unit is sealed in the rotor by using a heat-conducting adhesive.
Preferably, the rotor is connected to the stator by a bearing.
Preferably, the conductive ring is insulated and isolated from the mandrel.
Preferably, the mandrel is provided with a plurality of conducting rings, and adjacent conducting rings are insulated and isolated.
Preferably, the signal processing unit converts the thermoelectric voltage signal of the thermocouple into a common analog signal.
Preferably, the second terminal includes at least one pair of power terminals.
Preferably, the thermocouple temperature measurement slip ring is designed into X temperature channels, and the number of the first binding posts is at least 2X.
Preferably, the number of the second terminals is at least X + 1.
Preferably, the first binding post and the rotor, and the second binding post and the stator are isolated by insulating sheaths.
The beneficial effects obtained by the invention are as follows: the temperature signal that passes through signal processing unit and measure the thermocouple at the rotating member side converts the analog signal into, then inserts the data acquisition equipment with the analog signal through the sliding ring, realizes the signal transmission of rotating part to fixed part, has avoided the thermocouple signal simultaneously because of introducing the signal distortion problem that other semiconductor materials arouse. The invention can use any data collector with analog quantity collection to measure the temperature of the rotating part through the thermocouple, has low test cost, high accuracy and flexible use, and can be widely applied to test requirements of racks, vehicles and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic diagram of signal processing of the signal processing unit;
reference numerals: 1. a rotor; 2. a stator; 3. a mandrel; 4. conducting rings; 5. an electric brush; 6. an electric brush holder; 7. a first terminal post; 8. a second terminal; 9. a bearing; 10. a signal processing unit; 11. heat conducting glue; 12. a rear cover; 13. the mandrel is provided with a through hole.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments.
As shown in fig. 1-3, the thermocouple temperature measurement slip ring for measuring the temperature of a rotating member of the present invention includes a rotor 1, a first terminal 7, a signal processing unit 10, a stator 2, a second terminal 8, a core shaft 3, a conducting ring 4 and an electric brush 5, wherein the rotor 1 is a cavity structure made of an insulating material, and the rotor 1 is fixedly connected with the rotating member and keeps rotating synchronously; the signal processing unit 10 is filled and sealed in a cavity of the rotor 1 by using heat conducting glue 12, the first binding post 7 is arranged on the rotor 1, the input end of the signal processing unit 10 is connected with the first binding post 7 through a special compensation lead wire for a thermocouple, then the first binding post 7 is connected with a thermocouple electrode on the rotating part through a special compensation lead wire for the thermocouple, and the thermocouple inputs measured thermoelectric potential signals of the rotating part into the input end of the signal processing unit 10 through the special compensation lead wire for the thermocouple and the first binding post 7.
The stator 2 is a cavity structure made of insulating materials, and the stator 2 is rotationally connected with the rotor 1 through a bearing 9; the mandrel 3 is made of insulating materials, a mandrel through hole 13 for a lead to pass through is formed in the middle of the mandrel 3, the lower end of the mandrel 3 is fixedly connected with the rotor 1 through threads, and the upper end of the mandrel extends into a cavity of the stator 2; a conducting ring 4 and an electric brush support 6 are arranged in a cavity of the stator 2, the conducting ring 4 is fixed in a groove corresponding to the mandrel 3, the electric brush support 6 is made of insulating materials, the electric brush support 6 is fixed with the cavity wall of the stator 2 through bolts (the position can be adjusted according to the contact condition of the electric brush 5 and the conducting ring 4), and an electric brush 5 is arranged on the electric brush support 6; the head of the electric brush 5 is always in sliding contact with the conducting ring 4 on the mandrel 3, the tail of the electric brush is connected with the inner side of the second binding post 1 through a conducting wire, and the outer side of the second binding post 1 is connected with a power supply and a data acquisition unit.
The conducting wire passes through the central spindle through hole 13 in the central part of the central spindle 3 to connect the conducting ring 4 with the output end of the signal processing unit 10. The thermoelectric potential signals of the thermocouple are converted into common analog quantity signals after being processed in the signal processing unit 10, the converted linear analog quantity signals are not influenced by the material of the lead any more, and the signals can be directly measured by the lead by using a data acquisition unit.
In this embodiment, the signal processing unit 10 adopts INA128UK, and is composed of a power supply, a signal measurement unit, a signal processing and converting unit, and the like, and mainly completes measurement and signal conversion of the thermoelectric voltage signal of the thermocouple, and can convert the thermoelectric voltage signal of the thermocouple into a common analog signal.
In this embodiment, the conducting rings 4 are isolated from the mandrel 3, a plurality of conducting rings 4 are disposed in the groove of the mandrel 3, and adjacent conducting rings 4 are isolated from each other.
In this embodiment, the thermocouple temperature measuring slip ring may be designed as an X temperature channel (X > ═ 1), and the number of the first binding posts 7 (thermocouple binding posts) located on the rotor 1 is 2X; the stator 2 is provided with a plurality of second terminals 8, wherein at least one pair of power terminals (one positive terminal and one negative terminal) and X +1 signal output channels (X thermocouple output signals and a common terminal) are required to be replaced.
In this embodiment, the conductive ring 4 and the brush 5 are made of materials with high conductive efficiency and small conductive resistance; the bearing 9 is a high-speed high-precision bearing so as to be compatible with the testing requirement of high-speed components; the tail end of the stator 2 is provided with a rear cover 12 in a pressing mode so as to protect the internal structure of the cavity of the stator 2.
The foregoing shows and describes the general principles and principal structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a thermocouple temperature measurement sliding ring for measuring rotating member temperature which characterized in that: the electric heating rotor comprises a rotor (1), a first binding post (7), a signal processing unit (10), a stator (2), a second binding post (8), a mandrel (3), a conducting ring (4) and an electric brush (5), wherein the rotor (1) is fixedly connected with a rotating part provided with a thermocouple, the signal processing unit (10) is arranged in the rotor (1), the first binding post (7) is arranged on the rotor (1), one end of the first binding post (7) is correspondingly connected with the thermocouple, and the other end of the first binding post (7) is connected with the input end of the signal processing unit (10);
the rotor (1) is rotationally connected with the stator (2), the lower end of the mandrel (3) is fixedly connected with the rotor (1), and the upper end of the mandrel extends into a cavity of the stator (2); a conducting ring (4) and an electric brush support (6) are arranged in the stator (2), the conducting ring (4) is fixed at the upper end of the mandrel (3), and a conducting wire penetrates through the mandrel (3) and is connected with the conducting ring (4) and the output end of the signal processing unit (10); an electric brush (5) is arranged on the electric brush support (6), and the electric brush (5) is in contact conduction with the conducting ring (4); the second binding post (8) is arranged on the stator (2), and the electric brush (5) is connected with the second binding post (8) through a conducting wire.
2. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 1, wherein: the signal processing unit (10) is sealed in the rotor (1) by using heat-conducting glue (11).
3. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 1, wherein: the rotor (1) is connected with the stator (2) through a bearing (9).
4. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 1, wherein: the conducting ring (4) is insulated and isolated from the mandrel (3).
5. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 1, wherein: the mandrel (3) is provided with a plurality of conducting rings (4), and adjacent conducting rings (4) are insulated and isolated.
6. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 1, wherein: the signal processing unit (10) converts the thermoelectric potential signal of the thermocouple into a common analog quantity signal.
7. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 1, wherein: the second terminals (8) comprise at least one pair of power terminals.
8. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 1, wherein: the thermocouple temperature measurement slip ring is designed into X temperature channels, and the number of the first binding posts (7) is at least 2X.
9. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 8, wherein: the number of the second binding posts (8) is at least X + 1.
10. The thermocouple temperature measuring slip ring for measuring the temperature of a rotating member according to claim 8, wherein: the first binding post (7) and the rotor (1) and the second binding post (8) and the stator (2) are isolated by insulating sheaths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110459117.6A CN113203491A (en) | 2021-04-27 | 2021-04-27 | Thermocouple temperature measuring slip ring for measuring temperature of rotating part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110459117.6A CN113203491A (en) | 2021-04-27 | 2021-04-27 | Thermocouple temperature measuring slip ring for measuring temperature of rotating part |
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| Publication Number | Publication Date |
|---|---|
| CN113203491A true CN113203491A (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110459117.6A Pending CN113203491A (en) | 2021-04-27 | 2021-04-27 | Thermocouple temperature measuring slip ring for measuring temperature of rotating part |
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| CN (1) | CN113203491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536100A (en) * | 2022-02-27 | 2022-05-27 | 重庆大学 | Temperature measuring method and device for milling cutting tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202853786U (en) * | 2012-10-31 | 2013-04-03 | 上海大众汽车有限公司 | Device used for measuring internal parameters of rotating member |
| CN103134605A (en) * | 2013-01-30 | 2013-06-05 | 山东大学 | Rolling bearing inner ring rolling path grinding temperature measuring device |
| CN105515285A (en) * | 2016-01-12 | 2016-04-20 | 上海吉亿电机有限公司 | Non-contact rotor temperature detection device and method |
| CN106840428A (en) * | 2017-03-13 | 2017-06-13 | 大连理工大学 | A kind of apparatus and method for facing temperature survey |
| CN206369591U (en) * | 2016-07-07 | 2017-08-01 | 中国第一汽车股份有限公司 | The temperature measuring equipment of strong magnetic-type revolving part |
| CN208672167U (en) * | 2018-06-08 | 2019-03-29 | 扬州五亭桥缸套有限公司 | A kind of online temperature measuring device of centrifuge cylinder mold |
-
2021
- 2021-04-27 CN CN202110459117.6A patent/CN113203491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202853786U (en) * | 2012-10-31 | 2013-04-03 | 上海大众汽车有限公司 | Device used for measuring internal parameters of rotating member |
| CN103134605A (en) * | 2013-01-30 | 2013-06-05 | 山东大学 | Rolling bearing inner ring rolling path grinding temperature measuring device |
| CN105515285A (en) * | 2016-01-12 | 2016-04-20 | 上海吉亿电机有限公司 | Non-contact rotor temperature detection device and method |
| CN206369591U (en) * | 2016-07-07 | 2017-08-01 | 中国第一汽车股份有限公司 | The temperature measuring equipment of strong magnetic-type revolving part |
| CN106840428A (en) * | 2017-03-13 | 2017-06-13 | 大连理工大学 | A kind of apparatus and method for facing temperature survey |
| CN208672167U (en) * | 2018-06-08 | 2019-03-29 | 扬州五亭桥缸套有限公司 | A kind of online temperature measuring device of centrifuge cylinder mold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536100A (en) * | 2022-02-27 | 2022-05-27 | 重庆大学 | Temperature measuring method and device for milling cutting tool |
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