CN112326172A - Cooling device of gas turbine moving blade non-contact vibration measurement sensor - Google Patents
Cooling device of gas turbine moving blade non-contact vibration measurement sensor Download PDFInfo
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- CN112326172A CN112326172A CN202011325683.XA CN202011325683A CN112326172A CN 112326172 A CN112326172 A CN 112326172A CN 202011325683 A CN202011325683 A CN 202011325683A CN 112326172 A CN112326172 A CN 112326172A
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- turbine
- gas turbine
- moving blade
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- 238000001816 cooling Methods 0.000 title claims abstract description 64
- 238000005259 measurement Methods 0.000 title claims abstract description 33
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 48
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a cooling device of a non-contact vibration measurement sensor of a gas turbine moving blade, which is characterized in that a sensor protection box body of the non-contact vibration measurement sensor is arranged; the sensor protection box body is provided with a plurality of rows of cooling holes, compressed air introduced into the turbine cylinder body from the air compressor air extraction opening is used for carrying out air cooling on the non-contact vibration measurement sensor, the cooling air enters the mounting box from the cooling holes in the sensor mounting box body and is filled in the cooling air flowing hole between the non-contact vibration measurement sensor and the mounting box, and then the non-contact vibration measurement sensor is protected by cooling air, so that high-temperature smoke in a turbine flow channel is prevented from damaging the non-contact vibration measurement sensor. The invention solves the measurement problem of the non-contact vibration measurement sensor for the turbine moving blade in the high-temperature environment, and is suitable for the non-contact vibration monitoring of the turbine moving blades of each gas turbine.
Description
Technical Field
The invention relates to a cooling device for a moving blade non-contact vibration measurement sensor, in particular to a cooling device for a gas turbine moving blade non-contact vibration measurement sensor.
Background
With the continuous development of clean energy in China, the installed capacity of a gas turbine power station is steadily increased, and various online monitoring technology levels of the gas turbine are also continuously improved for ensuring the safe operation of the gas turbine. Turbine blades are important components of gas turbines, and vibration measurement of turbine blades is one of the key technologies of gas turbines. The turbine blade needs to be subjected to various vibration tests in the design and manufacturing stages, including static and normal-temperature blade vibration characteristic tests, and after the turbine blade is put into practical operation, because the test environment temperature is high and the test system is complex, the vibration monitoring of the turbine blade is rarely applied to a practical unit.
The vibration monitoring device for the gas turbine moving blade in China is installed less, mainly because the temperature of a test environment is high, the sensor is difficult to resist high temperature, the installation is difficult, and a test system is complex.
With the continuous development of the gas turbine towards high power and high efficiency, the initial temperature of the turbine is continuously improved, and the safety requirement on the turbine blade is also continuously improved. On an actual gas turbine unit, the demand of a non-contact sensor for monitoring the vibration of a turbine moving blade, which can be safely and reliably used in a high-temperature environment, is more and more urgent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a cooling device for a non-contact measurement sensor for vibration monitoring of a moving blade of a gas turbine.
In order to achieve the purpose, the invention adopts the following technical scheme:
the cooling device of the non-contact vibration measurement sensor of the turbine moving blade of the gas turbine comprises a left support bearing and a right support bearing which are arranged at two ends of a gas compressor rotor of the gas turbine, wherein the gas compressor rotor of the gas turbine comprises a gas compressor part and a turbine part; an air pumping hole is formed in the air compressor cylinder; a rotating speed sensor for measuring the rotating speed of the rotor is arranged at the shaft end; punching and mounting a non-contact vibration measurement sensor with a cooling device on a turbine cylinder cooling air channel corresponding to a turbine moving blade, and obtaining vibration information of each turbine moving blade by using a blade tip timing measurement method; the non-contact vibration measurement sensor with the cooling device comprises a sensor protection box body and a non-contact vibration measurement sensor packaged in the sensor protection box body, wherein the sensor protection box body is provided with a plurality of rows of cooling holes.
The invention is further improved in that the gas turbine upper cylinder and the gas turbine lower cylinder are fixedly connected by a cylinder bolt.
The invention further improves that the non-contact vibration measurement sensor comprises a laser transmitter and a plurality of laser receivers, and lead wires of the laser transmitter and the laser receivers are led out from the tail part of the sensor protection box body.
The invention is further improved in that a light-transmitting end cover is arranged at the top of the sensor protection box body.
The invention is further improved in that the sensor protection box body is provided with a mounting lug.
The invention is further improved in that the mounting lug is fixedly mounted in the cooling air channel of the turbine cylinder by bolts.
The invention is further improved in that compressed air introduced into the turbine cylinder from the air exhaust port of the air compressor is used for carrying out air cooling on the non-contact vibration measuring sensor, cooling air with the pressure higher than that of flue gas enters the sensor mounting box body from a cooling hole in the sensor mounting box body and is filled in a cooling air flowing hole between the non-contact vibration measuring sensor and the sensor mounting box body, so that cooling air protection is formed on the non-contact vibration measuring sensor, and high-temperature flue gas in a turbine flow channel is prevented from entering and damaging the non-contact vibration measuring sensor.
The invention is further improved in that in order to measure different order vibration modes of the turbine blade, the non-contact vibration measuring sensor is installed between the turbine moving blade and the downstream stationary blade in a mode of setting an inclination angle.
The invention has at least the following beneficial technical effects:
the invention provides a cooling device of a non-contact vibration measurement sensor of a gas turbine moving blade, which is characterized in that a sensor mounting box body of the non-contact vibration measurement sensor is arranged; the sensor mounting box body is provided with a plurality of rows of cooling holes, compressed air introduced into the turbine cylinder body from the air exhaust port of the air compressor is used for carrying out air cooling on the non-contact vibration measuring sensor, the cooling air enters the sensor mounting box body from the cooling holes in the sensor mounting box body and is filled in cooling air flowing holes between the non-contact vibration measuring sensor and the sensor mounting box body, and then cooling air protection is formed on the non-contact vibration measuring sensor, so that high-temperature smoke in a turbine flow channel is prevented from entering and damaging the sensor.
In summary, the cooling device for the non-contact vibration measurement sensor of the gas turbine moving blade solves the measurement problem of the non-contact vibration measurement sensor of the moving blade of the turbine in the high-temperature environment, provides a cooling method for the non-contact vibration measurement sensor of the moving blade in the high-temperature environment, and is suitable for non-contact vibration monitoring of the moving blade of each gas turbine.
Drawings
FIG. 1 is a schematic view of a gas turbine moving blade vibration monitoring apparatus;
FIG. 2 is a schematic view of a turbine moving blade vibration displacement sensor and cooling apparatus;
FIG. 3 is a schematic end view of a turbine moving blade vibration displacement sensor and cooling apparatus;
FIG. 4 is a schematic view of the mounting location of a turbine moving blade vibration displacement sensor.
Description of reference numerals:
1. a gas turbine compressor rotor; 2. a left support bearing; 3. a right support bearing; 4. a compressor section; 5. a turbine section; 6. a gas turbine upper cylinder; 7. a gas turbine lower cylinder; 8. a burner; 9. an air exhaust port of the air compressor; 10. a rotational speed sensor; 11. moving blades of a turbine; 12. a non-contact vibration measuring sensor with a cooling device; 13. a turbine cylinder cooling air passage; 14. a non-contact vibration measurement sensor; 15. a sensor protection box body; 16. a cooling hole; 17. a laser transmitter; 18. a laser receiver; 19. a lead wire; 20. a transparent protective end cap; 21. mounting lugs; 22. cooling the air flow apertures.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the cooling device of the non-contact vibration measurement sensor for the turbine moving blade of the gas turbine provided by the invention comprises a left support bearing 2 and a right support bearing 3 which are arranged at two ends of a compressor rotor 1 of the gas turbine, wherein the compressor rotor 1 of the gas turbine comprises a compressor part 4 and a turbine part 5, the rotor is wrapped by an upper cylinder 6 of the gas turbine and a lower cylinder 7 of the gas turbine, the upper cylinder 6 of the gas turbine and the lower cylinder 7 of the gas turbine are fixedly connected by a cylinder bolt, and a plurality of combustors 8 are uniformly arranged between the compressor part 4 and the turbine part 5 along the circumference of the rotating direction; an air pumping hole 9 is formed in the air compressor cylinder; a rotating speed sensor 10 for measuring the rotating speed of the rotor is arranged at the shaft end; a non-contact vibration measuring sensor 12 with a cooling device is arranged on a turbine cylinder cooling air channel 13 corresponding to the turbine moving blades 11 in a punching mode, and vibration information of each turbine moving blade 11 is obtained by a blade tip timing measuring method.
Referring to fig. 2, the non-contact vibration measuring sensor 12 with a cooling device includes a sensor protection case 15 and a non-contact vibration measuring sensor 14 enclosed in the sensor protection case 15, the non-contact vibration measuring sensor 14 includes a laser emitter 17 and a plurality of laser receivers 18, lead wires 19 of the laser emitter and the laser receivers are led out from the tail of the sensor protection case 15, and a light-transmitting end cap 20 is disposed on the top of the sensor protection case 15. The sensor protection box body 15 is provided with mounting lugs 21 and is fixedly mounted in the turbine cylinder cooling air channel 13 by bolts.
Referring to fig. 3, the non-contact vibration measuring sensor 14 is air-cooled by compressed air introduced from the air extraction opening of the compressor to the turbine cylinder, and the cooling air enters the sensor mounting box 15 from the cooling hole 16 on the sensor mounting box 15 and fills the cooling air flowing hole 22 between the non-contact vibration measuring sensor 14 and the sensor mounting box 15, so as to form cooling air protection for the non-contact vibration measuring sensor 14 and prevent high-temperature flue gas in the turbine flow passage from entering and damaging the sensor.
Referring to FIG. 4, to facilitate the measurement of different turbine blade step modes, the non-contact vibration measurement sensor 14 may be mounted at an oblique angle between the turbine rotor blade and the downstream stator blade.
Claims (8)
1. The cooling device of the non-contact vibration measurement sensor for the turbine moving blades of the gas turbine is characterized in that a left support bearing (2) and a right support bearing (3) are arranged at two ends of a compressor rotor (1) of the gas turbine, the compressor rotor (1) of the gas turbine comprises a compressor part (4) and a turbine part (5), the rotor is wrapped by an upper cylinder (6) of the gas turbine and a lower cylinder (7) of the gas turbine, the upper cylinder (6) of the gas turbine and the lower cylinder (7) of the gas turbine are fixedly connected, and a plurality of combustors (8) are uniformly arranged between the compressor part (4) and the turbine part (5) along the periphery in the rotating direction; an air extraction opening (9) is arranged on the air compressor cylinder; a rotating speed sensor (10) for measuring the rotating speed of the rotor is arranged at the shaft end; punching and mounting a non-contact vibration measurement sensor (12) with a cooling device on a turbine cylinder cooling air channel (13) corresponding to a turbine moving blade (11), and obtaining vibration information of each turbine moving blade (11) by using a blade tip timing measurement method; the non-contact vibration measurement sensor (12) with the cooling device comprises a sensor protection box body (15) and a non-contact vibration measurement sensor (14) packaged in the sensor protection box body (15), wherein the sensor protection box body (15) is provided with a plurality of rows of cooling holes (16).
2. The cooling device for a non-contact vibration measuring sensor of a moving blade of a gas turbine according to claim 1, wherein the upper cylinder (6) and the lower cylinder (7) of the gas turbine are fixedly connected by a cylinder bolt.
3. The cooling device for a non-contact vibration measuring sensor of a moving blade of a gas turbine according to claim 1, wherein the non-contact vibration measuring sensor (14) comprises a laser transmitter (17) and a plurality of laser receivers (18), and lead wires (19) of the laser transmitter and the laser receivers are led out from the tail of the sensor protection case (15).
4. The cooling device for a non-contact vibration measuring sensor of a moving blade of a gas turbine according to claim 1, wherein a translucent end cap (20) is provided on top of the sensor protection case (15).
5. The cooling device for a non-contact vibration measuring sensor of a moving blade of a gas turbine according to claim 1, wherein the sensor protective case (15) is provided with mounting lugs (21).
6. The cooling device for a non-contact vibration measuring sensor of a moving blade of a gas turbine according to claim 5, wherein the mounting lug (21) is fixedly mounted in the cooling air passage (13) of the turbine block by means of a bolt.
7. The cooling apparatus for a non-contact vibration measuring sensor of moving blades of a gas turbine according to claim 1, wherein the non-contact vibration measuring sensor (14) is air-cooled by compressed air introduced into a turbine cylinder from a compressor extraction opening, and cooling air having a pressure greater than that of flue gas enters the sensor mounting case (15) from a cooling hole (16) formed in the sensor mounting case (15) and fills a cooling air flow aperture (22) formed between the non-contact vibration measuring sensor (14) and the sensor mounting case (15), thereby forming a cooling air shield for the non-contact vibration measuring sensor (14) and preventing high-temperature flue gas in a turbine flow passage from entering and damaging the non-contact vibration measuring sensor (14).
8. The cooling device for a non-contact vibration measuring sensor of a turbine moving blade of a gas turbine according to claim 1, wherein the non-contact vibration measuring sensor (14) is installed at a position between the turbine moving blade and the downstream stationary blade by setting an inclination angle in order to measure different step modes of the turbine moving blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011325683.XA CN112326172A (en) | 2020-11-23 | 2020-11-23 | Cooling device of gas turbine moving blade non-contact vibration measurement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011325683.XA CN112326172A (en) | 2020-11-23 | 2020-11-23 | Cooling device of gas turbine moving blade non-contact vibration measurement sensor |
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| Publication Number | Publication Date |
|---|---|
| CN112326172A true CN112326172A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011325683.XA Pending CN112326172A (en) | 2020-11-23 | 2020-11-23 | Cooling device of gas turbine moving blade non-contact vibration measurement sensor |
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| CN (1) | CN112326172A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210256A (en) * | 1997-08-21 | 1999-03-10 | Abb研究有限公司 | Optical high temperature meter for gas turbine |
| CN107631881A (en) * | 2017-08-30 | 2018-01-26 | 华能国际电力股份有限公司 | Full-size multifunctional gas turbine combustion test system |
| CN108168810A (en) * | 2017-11-29 | 2018-06-15 | 中国航空工业集团公司沈阳飞机设计研究所 | Vibration characteristics tests system under a kind of hyperthermal environments |
| KR20180079865A (en) * | 2017-01-03 | 2018-07-11 | 한국전력공사 | Test rig and test system and method for heat resistant test of high-temperature component |
| CN207990134U (en) * | 2018-02-27 | 2018-10-19 | 中国航发动力股份有限公司 | A kind of gas turbine high-temp-resisting vibration-resisting sensor stand |
| CN208751816U (en) * | 2018-09-05 | 2019-04-16 | 西安热工研究院有限公司 | A kind of vibration monitoring device for gas turbine compressor blade and blade |
| CN213632595U (en) * | 2020-11-23 | 2021-07-06 | 华能国际电力股份有限公司 | Cooling device of gas turbine moving blade non-contact vibration measurement sensor |
-
2020
- 2020-11-23 CN CN202011325683.XA patent/CN112326172A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210256A (en) * | 1997-08-21 | 1999-03-10 | Abb研究有限公司 | Optical high temperature meter for gas turbine |
| KR20180079865A (en) * | 2017-01-03 | 2018-07-11 | 한국전력공사 | Test rig and test system and method for heat resistant test of high-temperature component |
| CN107631881A (en) * | 2017-08-30 | 2018-01-26 | 华能国际电力股份有限公司 | Full-size multifunctional gas turbine combustion test system |
| CN108168810A (en) * | 2017-11-29 | 2018-06-15 | 中国航空工业集团公司沈阳飞机设计研究所 | Vibration characteristics tests system under a kind of hyperthermal environments |
| CN207990134U (en) * | 2018-02-27 | 2018-10-19 | 中国航发动力股份有限公司 | A kind of gas turbine high-temp-resisting vibration-resisting sensor stand |
| CN208751816U (en) * | 2018-09-05 | 2019-04-16 | 西安热工研究院有限公司 | A kind of vibration monitoring device for gas turbine compressor blade and blade |
| CN213632595U (en) * | 2020-11-23 | 2021-07-06 | 华能国际电力股份有限公司 | Cooling device of gas turbine moving blade non-contact vibration measurement sensor |
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