CN113091938A - Method for measuring bearing temperature by using thermocouple arranged in casing - Google Patents
Method for measuring bearing temperature by using thermocouple arranged in casing Download PDFInfo
- Publication number
- CN113091938A CN113091938A CN202110505902.0A CN202110505902A CN113091938A CN 113091938 A CN113091938 A CN 113091938A CN 202110505902 A CN202110505902 A CN 202110505902A CN 113091938 A CN113091938 A CN 113091938A
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- thermocouple
- temperature
- bearing
- casing
- measuring
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000000523 sample Substances 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a method for measuring the temperature of a bearing by a thermocouple arranged in a casing.A hole is drilled on the circumference of the casing, and a first thermocouple measuring head channel, a second thermocouple measuring head channel, a first thermocouple coupling wire channel and a second thermocouple coupling wire channel are drilled and laid; a thermocouple penetrates into the inner wall of a bearing cavity of the casing through a hole in the casing, positioning and installation of a first thermocouple measuring head, a second thermocouple measuring head, a first thermocouple coupling wire and a second thermocouple coupling wire are achieved, and temperature change of the bearing is sensed in real time; the temperature signals received by the thermocouple measuring head I and the thermocouple measuring head II are transmitted to the outside of the casing through the thermocouple coupling wire I and the thermocouple coupling wire II and transmitted to the temperature measuring connector, the temperature measuring connector is externally connected with the temperature measuring equipment, and the temperature change of the bearing is collected through the externally connected temperature measuring equipment.
Description
Technical Field
The invention belongs to the technical field of slip ring current leading devices, and particularly relates to a method for measuring the temperature of a bearing by a thermocouple arranged in a casing.
Background
The rotating speed of the rotor of the aeroengine in China is usually higher than 20000r/min, the rotating speed of the small and medium aeroengine is mostly applied around 40000r/min, and the requirements for measuring the stress of the engine in military specifications of the engine or civil aviation airworthiness regulations at home and abroad are all specified in plain text. The signal transmission device for measuring the dynamic stress of the engine usually adopts a slip ring electricity leading device, a slip ring rotor of the slip ring electricity leading device rotates along with a rotor of the engine, a bearing of a slip ring rotor rotates at a high speed to generate a large amount of heat, and in order to ensure that the bearing of the slip ring rotor is normally used, the temperature of the bearing of the slip ring rotor must be monitored when the slip ring electricity leading device works so as to ensure that the slip ring electricity leading device is normally used. The existing bearing temperature monitoring method is to weld a thermocouple on a bearing outer ring, couple wires are led out from the bearing outer ring from two sides of a bearing supporting casing or radially led out through the hole of the supporting casing, and temperature signals are connected into testing equipment. If the bearing cavity has sealing requirements, the wiring hole is also required to be plugged. The end face and the outer circular face of the bearing outer ring of the slip ring electricity leading device are both attached to other components, if a thermocouple is welded on the bearing outer ring, a groove needs to be formed in the component contacted with the bearing to accommodate the thermocouple, and in the process of assembling the rotor to the supporting casing, a thermocouple wire needs to pass through a wiring hole of the casing carefully, and the thermocouple wire is gradually pulled out along with the pushing of the rotor into the casing. In the assembly process, the alignment of the arrangement part of the bearing thermocouple and the slotted part of the contact element needs to be paid special attention to, the thermocouple is prevented from being extruded in the assembly process, a thermocouple wire is bent and pulled in a hole and is easy to scratch and damage, and a thermocouple connector needs to be connected on site after the thermocouple connector is installed in place.
The existing bearing temperature measuring method is to weld a thermocouple on the outer ring of a bearing, and a thermocouple wire passes through a hole of a casing or a bearing contact element to lead out a thermocouple signal; in order to extrude the thermocouple on the outer ring surface of the bearing without extrusion welding, the bearing contact element needs to be refitted with a slot; each assembly needs to arrange a thermocouple on site, draw the thermocouple wire and then connect the connector assembly, the thermocouple wire is easy to wear in the drawing process, the exposed thermocouple wire and the connector assembly are usually fixed temporarily, and the reliability is lower; the lead hole is required to be blocked on site in the occasion with the sealing requirement on the bearing cavity, the assembling and disassembling process is complex, and the thermocouple is easy to damage.
Disclosure of Invention
The invention aims to provide a method for measuring the temperature of a bearing by a thermocouple arranged in a casing.A hole is drilled in the casing for mounting the bearing, a thermocouple measuring head and a thermocouple wire are embedded in the casing, the thermocouple measuring head and the thermocouple wire are fixed by epoxy resin glue, and after the thermocouple wire is led out of the casing, a connector assembly is connected and fixed on the casing, so that the thermocouple and the casing are integrated, the assembly process of a rotor is not influenced by temperature requirements, the thermocouple does not need to be arranged during assembly, the temperature of the bearing of a slip ring rotor can be simply, conveniently and quickly tested, and the problems in the background technology are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for measuring the temperature of a bearing by a thermocouple arranged in a casing comprises the following steps:
the method comprises the following steps: drilling holes on the circumference of the casing, and drilling through and paving channels of a thermocouple measuring head I, a thermocouple measuring head II, a thermocouple coupling wire I and a thermocouple coupling wire II;
step two: the thermocouple penetrates into the inner wall of a bearing cavity of the casing through a hole in the casing, positioning and installation of a first thermocouple measuring head, a second thermocouple measuring head, a first thermocouple wire and a second thermocouple wire are achieved, the first thermocouple measuring head and the second thermocouple measuring head are enabled to face and contact the bearing in the bearing cavity, and temperature change of the bearing is sensed in real time;
step three: and temperature signals received by the first thermocouple measuring head and the second thermocouple measuring head are transmitted to the outside of the casing and transmitted to the temperature measuring connector through the first thermocouple wire and the second thermocouple wire, the temperature measuring connector is externally connected with temperature measuring equipment, and the temperature change of the bearing is acquired through the externally connected temperature measuring equipment.
As a still further scheme of the invention: and in the second step, the first thermocouple measuring head, the second thermocouple measuring head, the first thermocouple wire and the second thermocouple wire are installed in the casing hole and are filled and cured through epoxy resin glue.
As a still further scheme of the invention: and in the second step, the first thermocouple measuring head and the second thermocouple measuring head are flush with the inner wall of the casing.
As a still further scheme of the invention: and in the third step, the temperature measuring connector is coupled on the mounting plate of the casing.
As a still further scheme of the invention: the temperature measuring connector is fixed on the mounting plate through a bolt.
As a still further scheme of the invention: the mounting plate is fixed on the casing through bolts.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention does not destroy the integral structure of the bearing outer ring and the bearing contact component, reduces the installation difficulty, completes the signal leading-out and the plugging of the lead hole at one time, integrates the thermocouple and the bearing support casing together, has compact structure and reliable work, can be used for a long time by one-time arrangement, is not easy to damage due to fixed position of the thermocouple, and can be quickly inserted and connected during the test of connecting lines;
2. the bearing of the invention has no welding thermocouple, so that the bearing is convenient to assemble and disassemble, and the temporary connection after the thermocouple wires penetrate out is not needed, thereby realizing the temperature monitoring of the bearing rapidly, simply, conveniently and reliably.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a view of the thermocouple placement bore bearing cartridge of the present invention.
FIG. 2 is a temperature measurement diagram of a thermocouple bearing built in a casing according to the present invention.
Fig. 3 is a view from direction a of fig. 2.
In the figure: 1. a case; 2. a first thermocouple wire; 3. a second thermocouple wire; 4. epoxy resin glue; 5. a thermocouple measuring head I; 6. a second thermocouple probe; 7. a bearing cavity; 8. a temperature measuring connector; 9. mounting a plate; 10. and (4) bolts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, a method for measuring a temperature of a bearing by a thermocouple built in a casing includes the following steps:
the method comprises the following steps: drilling holes on the circumference of the casing 1, and drilling through and paving channels of a first thermocouple measuring head 5, a second thermocouple measuring head 6, a first thermocouple wire 2 and a second thermocouple wire 3;
step two: a thermocouple penetrates into the inner wall of a bearing cavity 7 of the casing 1 through a hole in the casing 1, positioning and installation of a first thermocouple measuring head 5, a second thermocouple measuring head 6, a first thermocouple wire 2 and a second thermocouple wire 3 are achieved, the first thermocouple measuring head 5 and the second thermocouple measuring head 6 are enabled to be opposite to and contact with a bearing in the bearing cavity 7, and temperature change of the bearing is sensed in real time;
step three: temperature signals received by the first thermocouple measuring head 5 and the second thermocouple measuring head 6 are transmitted to the outside of the casing 1 and transmitted to the temperature measuring connector 8 through the first thermocouple wire 2 and the second thermocouple wire 3, the temperature measuring connector 8 is externally connected with temperature measuring equipment, and the temperature change of the bearing is collected through the externally connected temperature measuring equipment.
According to the method for measuring the bearing temperature, when the slip ring current leading device rotates at a high speed, the bearing rotates at a high speed along with the slip ring rotor to generate a large amount of heat, so that the bearing temperature rises, the thermocouple measuring head I5 and the thermocouple measuring head II 6 which are in contact with the bearing sense the change of the bearing temperature, temperature signals are transmitted to the temperature measuring connector 8 outside the casing 1 through the thermocouple wire I2 and the thermocouple wire II 3 which are pre-embedded in the casing 1, and the temperature measuring connector is communicated with temperature measuring equipment through a measuring line, so that the bearing temperature is rapidly, simply and conveniently monitored in real time.
Referring to fig. 2, in the second step, the first thermocouple probe 5, the second thermocouple probe 6, the first thermocouple wire 2 and the second thermocouple wire 3 are installed in the hole of the casing 1 and are filled and cured through epoxy resin glue 4.
When the sealing device is used, the sealing of the hole of the casing 1 and the curing of the first thermocouple measuring head 5, the second thermocouple measuring head 6, the first thermocouple wire 2 and the second thermocouple wire 3 are realized through the action of the epoxy resin glue 4, the sealing effect is improved, and the failure rate is reduced.
Referring to fig. 2, in the second step, the first thermocouple probe 5 and the second thermocouple probe 6 are flush with the inner wall of the casing 1 and contact the bearing.
When the bearing temperature measuring device is used, the sensitivity and the accuracy of the temperature measurement of the first thermocouple measuring head 5 and the second thermocouple measuring head 6 on the bearing are improved, and meanwhile, the first thermocouple measuring head 5 and the second thermocouple measuring head 6 are flush with the inner wall of the casing 1 and are in contact with the bearing, so that the bearing is convenient to disassemble and assemble, and the first thermocouple measuring head 5 and the second thermocouple measuring head 6 or the outer ring of the bearing can be prevented from being damaged during disassembly and assembly.
Referring to fig. 1-3, in step three, the temperature measuring connector 8 is coupled to a mounting plate 9 of the casing 1, the temperature measuring connector 8 is fixed on the mounting plate 9 through a bolt 10, and the mounting plate 9 is fixed on the casing 1 through the bolt 10.
When the method is used, the integral structure of the bearing outer ring and the bearing contact component can not be damaged by the method for measuring the temperature of the bearing, the installation difficulty is reduced, the signal leading-out and the plugging of the lead hole are completed at one time, the first thermocouple measuring head 5, the second thermocouple measuring head 6, the first thermocouple wire 2, the second thermocouple wire 3 and the bearing support casing 1 are integrated together, the structure is compact, the work is reliable, the method can be used for a long time by one-time arrangement, the positions of the first thermocouple measuring head 5, the second thermocouple measuring head 6, the first thermocouple wire 2 and the second thermocouple wire 3 are fixed and are not easy to damage, and the quick plugging is realized through the temperature measuring connector 8 during the test.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. A method for measuring the temperature of a bearing by a thermocouple arranged in a casing is characterized by comprising the following steps:
the method comprises the following steps: drilling holes on the circumference of the casing (1), and drilling through and paving channels of a first thermocouple probe (5), a second thermocouple probe (6), a first thermocouple wire (2) and a second thermocouple wire (3);
step two: a thermocouple penetrates into the inner wall of a bearing cavity (7) of the casing (1) through a hole in the casing (1) to realize the positioning and installation of a first thermocouple measuring head (5), a second thermocouple measuring head (6), a first thermocouple wire (2) and a second thermocouple wire (3), so that the first thermocouple measuring head (5) and the second thermocouple measuring head (6) are opposite to and contact with the bearing in the bearing cavity (7), and the temperature change of the bearing is sensed in real time;
step three: temperature signals received by the thermocouple measuring head I (5) and the thermocouple measuring head II (6) are transmitted to the outside of the casing (1) and transmitted to the temperature measuring connector (8) through the thermocouple coupling wire I (2) and the thermocouple coupling wire II (3), the temperature measuring connector (8) is externally connected with temperature testing equipment, and the collection of bearing temperature change is completed through the externally connected temperature testing equipment.
2. The method for measuring the temperature of the bearing by the thermocouple arranged in the machine box is characterized in that in the second step, the first thermocouple probe (5), the second thermocouple probe (6), the first thermocouple wire (2) and the second thermocouple wire (3) are installed in the hole of the machine box (1) and are filled and cured through epoxy resin glue (4).
3. The method for measuring the temperature of the bearing by the thermocouple arranged in the machine box is characterized in that in the second step, the first thermocouple measuring head (5) and the second thermocouple measuring head (6) are flush with the inner wall of the machine box (1).
4. The method for measuring the temperature of the bearing by the thermocouple arranged in the machine casing is characterized in that the temperature measuring connector (8) is coupled to the mounting plate (9) of the machine casing (1) in the third step.
5. A method for measuring the temperature of a bearing by a thermocouple arranged in a casing according to claim 4, wherein the temperature measuring connector (8) is fixed on the mounting plate (9) by a bolt (10).
6. A method for measuring the temperature of a bearing by a thermocouple arranged in a casing according to claim 5, characterized in that the mounting plate (9) is fixed on the casing (1) by bolts (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505902.0A CN113091938A (en) | 2021-05-10 | 2021-05-10 | Method for measuring bearing temperature by using thermocouple arranged in casing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505902.0A CN113091938A (en) | 2021-05-10 | 2021-05-10 | Method for measuring bearing temperature by using thermocouple arranged in casing |
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| Publication Number | Publication Date |
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| CN113091938A true CN113091938A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110505902.0A Pending CN113091938A (en) | 2021-05-10 | 2021-05-10 | Method for measuring bearing temperature by using thermocouple arranged in casing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639896A (en) * | 2021-08-12 | 2021-11-12 | 沈阳航空航天大学 | Indirect temperature measurement method for aircraft engine case |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433525A (en) * | 1993-08-13 | 1995-07-18 | Reliance Electric Industrial Company | Bearing housing with embedded temperature measurement device |
| JP2006189123A (en) * | 2005-01-07 | 2006-07-20 | Jtekt Corp | Pinion shaft support device for vehicle |
| CN101173874A (en) * | 2006-10-31 | 2008-05-07 | 佛山市顺德区顺达电脑厂有限公司 | Thermocouple type thermometer testing apparatus |
| CN202903357U (en) * | 2012-10-18 | 2013-04-24 | 中国航空动力机械研究所 | Installing structure of thermocouple for measuring temperature of outer ring of bearing |
| CN204878379U (en) * | 2015-07-15 | 2015-12-16 | 铜陵天奇蓝天机械设备有限公司 | Bearing frame with thermometric component |
| CN105317556A (en) * | 2014-12-04 | 2016-02-10 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature-resistant casing structure used for aero-engine |
| CN106099569A (en) * | 2016-07-18 | 2016-11-09 | 中国核动力研究设计院 | A kind of thermocouple electrical cnnector |
| CN106289734A (en) * | 2016-07-21 | 2017-01-04 | 浙江大学 | A kind of aero-engine casing high temperature containment test technology |
| CN211480331U (en) * | 2020-04-17 | 2020-09-11 | 青岛市产品质量监督检验研究院 | Temperature rise inspection recording equipment |
-
2021
- 2021-05-10 CN CN202110505902.0A patent/CN113091938A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433525A (en) * | 1993-08-13 | 1995-07-18 | Reliance Electric Industrial Company | Bearing housing with embedded temperature measurement device |
| JP2006189123A (en) * | 2005-01-07 | 2006-07-20 | Jtekt Corp | Pinion shaft support device for vehicle |
| CN101173874A (en) * | 2006-10-31 | 2008-05-07 | 佛山市顺德区顺达电脑厂有限公司 | Thermocouple type thermometer testing apparatus |
| CN202903357U (en) * | 2012-10-18 | 2013-04-24 | 中国航空动力机械研究所 | Installing structure of thermocouple for measuring temperature of outer ring of bearing |
| CN105317556A (en) * | 2014-12-04 | 2016-02-10 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature-resistant casing structure used for aero-engine |
| CN204878379U (en) * | 2015-07-15 | 2015-12-16 | 铜陵天奇蓝天机械设备有限公司 | Bearing frame with thermometric component |
| CN106099569A (en) * | 2016-07-18 | 2016-11-09 | 中国核动力研究设计院 | A kind of thermocouple electrical cnnector |
| CN106289734A (en) * | 2016-07-21 | 2017-01-04 | 浙江大学 | A kind of aero-engine casing high temperature containment test technology |
| CN211480331U (en) * | 2020-04-17 | 2020-09-11 | 青岛市产品质量监督检验研究院 | Temperature rise inspection recording equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639896A (en) * | 2021-08-12 | 2021-11-12 | 沈阳航空航天大学 | Indirect temperature measurement method for aircraft engine case |
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