CN112728309A - Vibration sensor support for gas turbine - Google Patents
Vibration sensor support for gas turbine Download PDFInfo
- Publication number
- CN112728309A CN112728309A CN202011524875.3A CN202011524875A CN112728309A CN 112728309 A CN112728309 A CN 112728309A CN 202011524875 A CN202011524875 A CN 202011524875A CN 112728309 A CN112728309 A CN 112728309A
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- Prior art keywords
- flow channel
- ear seat
- bracket
- base plate
- plate
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- 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.)
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- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 22
- 239000000523 sample Substances 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000112 cooling gas Substances 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention belongs to the technical field of gas turbine vibration sensors, and particularly relates to a vibration sensor support for a gas turbine. The invention increases the balance weight of the bracket to change the position of the gravity center, reduces the natural frequency of the bracket, and avoids the interference to the acquisition of the vibration value caused by the resonance generated by the same natural frequency as the driving frequency of the casing of the gas turbine. According to the invention, the lug base plate and the fastening metal plate are provided with two bolt holes, the fastening metal plate is arranged on the other side of the casing flange, and the fastening metal plate is connected with the bolt holes at the upper end of the lug base plate by using the fastening bolts to strain the vibration sensor bracket, so that the axial swinging vibration of the bracket is effectively reduced. The invention designs the cooling flow channel in the bracket, the cooling gas is accessed from the bracket interface, and the vibration sensor probe is cooled through the flow channel, and the cooling effect of the invention is obviously better than that of the conventional bracket. The invention has the advantages of simple structure, high rigidity, good heat dissipation performance, good stability and the like, and can be widely applied to the vibration value measurement of the casing in the high-temperature area of the gas turbine.
Description
Technical Field
The invention belongs to the technical field of gas turbine vibration sensors, and particularly relates to a vibration sensor support for a gas turbine.
Background
For a gas turbine unit, the temperature of an outer casing is high in the operation process, and a sensor for collecting the vibration of the outer casing needs to be mounted on the surface of the outer casing through a sensor support.
The natural frequency of the vibration sensor support of the existing combustion engine unit is close to the vibration frequency which can possibly generate higher amplitude on the local surface of a rotor or an outer box of the combustion engine when the combustion engine unit runs, and the combustion engine is stopped because the sensor support generates resonance and has larger amplitude at a specific rotating speed. The production and the unit maintenance are greatly influenced, and the fuel waste is caused. In addition, the high temperature of the outer casing of the combustion engine can also affect the operation of the vibration sensor, so that the vibration value of the vibration sensor fluctuates.
Aiming at the phenomenon that the unit may fluctuate in vibration value at a specific rotating speed, a sensor bracket with the natural frequency far away from the driving frequency of the combustion engine unit needs to be designed.
Disclosure of Invention
The invention aims to provide a vibration sensor bracket for a gas turbine, which can change the natural frequency of the bracket and reduce the probability and vibration amplitude of forced vibration when a unit operates so as to improve the accuracy of a vibration acquisition value of a gas turbine unit while ensuring the cooling of a sensor probe;
the purpose of the invention is realized by the following technical scheme: the ear seat consists of an ear seat substrate, a sensor mounting end face and a heat insulation baffle; the ear seat base plate is integrally square, the upper end of the left side of the ear seat base plate is provided with a trapezoidal bulge, the upper part of the left side of the ear seat base plate is provided with a long round through hole, the lower part of the left side of the ear seat base plate is provided with a round through hole, and the upper part and the lower part of the right side of the ear seat base plate are provided with fixing holes; the fastening metal plate consists of a polygonal plate, a square plate and a parallelogram transition section; the upper structure of the polygonal plate is completely the same as that of the upper structure of the left side of the lug base plate, the left lower corner of the bottom of the polygonal plate is a triangular unfilled corner, and the left side of the polygonal plate is provided with a long round through hole and a round through hole which are the same as those of the left side of the lug base plate; the left side and the right side of the parallelogram transition section are respectively connected with a polygonal plate and a square plate; the right side of the square plate part of the fastening metal plate is provided with a fixing hole which is the same as the right side of the ear seat substrate; the bottom of the sensor mounting end surface is vertically connected with the bottom of the ear seat substrate, and a cooling flow channel is formed in the sensor mounting end surface; the whole heat insulation baffle is L-shaped, and the right-angle part of the L-shape is subjected to circular arc smoothing treatment; the heat insulation baffle is integrally arranged at the upper left corner of the mounting end face of the sensor; the cooling flow channel consists of a square flow channel, a right-angle trapezoidal flow channel and a rectangular flow channel; the rectangular flow channel is arranged in the center of the sensor mounting end face and extends from the left end of the sensor mounting end face to the right end of the sensor mounting end face; the square flow channel is arranged above the middle part of the rectangular flow channel, the bottom of the square flow channel is communicated with the middle part of the rectangular flow channel, and the upper end of the square flow channel extends to the interface between the heat insulation baffle and the mounting end face of the sensor; the right-angle trapezoidal flow channel is arranged below the middle part of the rectangular flow channel, the upper bottom of the right-angle trapezoidal flow channel is communicated with the middle part of the rectangular flow channel, and the lower bottom of the right-angle trapezoidal flow channel extends to the interface between the ear base plate and the sensor mounting end face; the sensor mounting end face is provided with the support counterweight, the support counterweight changes the gravity center position of the ear seat, the natural frequency of the vibration sensor support is reduced, and resonance caused by the fact that the natural frequency is the same as the driving frequency of the combustion engine casing is avoided.
The invention has the beneficial effects that:
the invention can change the natural frequency of the bracket and reduce the probability and vibration amplitude of forced vibration when the unit operates while ensuring the cooling of the sensor probe, thereby improving the accuracy of the vibration acquisition value of the gas turbine unit. The invention increases the balance weight of the bracket to change the position of the gravity center, reduces the natural frequency of the bracket, and avoids the interference to the acquisition of the vibration value caused by the resonance generated by the same natural frequency as the driving frequency of the casing of the gas turbine. According to the invention, the lug base plate and the fastening metal plate are provided with two bolt holes, the fastening metal plate is arranged on the other side of the casing flange, and the fastening metal plate is connected with the bolt holes at the upper end of the lug base plate by using the fastening bolts to strain the vibration sensor bracket, so that the axial swinging vibration of the bracket is effectively reduced. The invention designs the cooling flow channel in the bracket, the cooling gas is accessed from the bracket interface, and the vibration sensor probe is cooled through the flow channel, and the cooling effect of the invention is obviously better than that of the conventional bracket. The invention optimizes the geometric shape of the sensor bracket, reduces the natural frequency of the bracket, and avoids the interference to the vibration value acquisition caused by the resonance generated by the same natural frequency as the driving frequency of the combustion engine casing. The invention has the advantages of simple structure, high rigidity, good heat dissipation performance, good stability and the like, and can be widely applied to the vibration value measurement of the casing in the high-temperature area of the gas turbine.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2(a) is a top view of the present invention.
Fig. 2(b) is a side view of the present invention.
Fig. 2(c) is a front view of the present invention.
Fig. 3 is a schematic view of the installation position of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention provides a vibration sensor support for a gas turbine, which can effectively avoid the influence of the vibration of a rotor and a casing of a gas turbine unit on the support.
The invention can change the natural frequency of the bracket and reduce the probability and vibration amplitude of forced vibration when the unit operates while ensuring the cooling of the sensor probe, thereby improving the accuracy of the vibration acquisition value of the gas turbine unit. The fastening metal plate added in the invention is arranged on the other side of the flange of the casing of the combustion engine, and adds an axial constraint to the bracket of the vibration sensor, thereby further reducing the vibration value interference possibly caused by the bracket. The invention has the advantages of simple structure, high rigidity, good heat dissipation performance, good stability and the like, and can be widely applied to the vibration value measurement of the casing in the high-temperature area of the gas turbine.
A vibration sensor mount for a gas turbine includes a fastening metal plate 2 and an ear base; the ear seat consists of an ear seat substrate 1, a sensor mounting end face 5 and a heat insulation baffle 6; the ear seat base plate is integrally square, the upper end of the left side of the ear seat base plate is provided with a trapezoidal bulge, the upper part of the left side of the ear seat base plate is provided with a long round through hole, the lower part of the left side of the ear seat base plate is provided with a round through hole, and the upper part and the lower part of the right side of the ear seat base plate are provided with fixing holes;
the fastening metal plate consists of a polygonal plate, a square plate and a parallelogram transition section; the upper structure of the polygonal plate is completely the same as that of the upper structure of the left side of the lug base plate, the left lower corner of the bottom of the polygonal plate is a triangular unfilled corner, and the left side of the polygonal plate is provided with a long round through hole and a round through hole 3 which are the same as those of the left side of the lug base plate; the left side and the right side of the parallelogram transition section are respectively connected with a polygonal plate and a square plate; the right side of the square plate part of the fastening metal plate is provided with a fixing hole 4 which is the same as the right side of the ear seat substrate;
the bottom of the sensor mounting end face is vertically connected with the bottom of the ear seat substrate, and a cooling flow channel 7 is formed in the sensor mounting end face; the whole heat insulation baffle is L-shaped, and the right-angle part of the L-shape is subjected to circular arc smoothing treatment; the heat insulation baffle is integrally arranged at the upper left corner of the mounting end face of the sensor; the cooling flow channel consists of a square flow channel, a right-angle trapezoidal flow channel and a rectangular flow channel; the rectangular flow channel is arranged in the center of the sensor mounting end face and extends from the left end of the sensor mounting end face to the right end of the sensor mounting end face; the square flow channel is arranged above the middle part of the rectangular flow channel, the bottom of the square flow channel is communicated with the middle part of the rectangular flow channel, and the upper end of the square flow channel extends to the interface between the heat insulation baffle and the mounting end face of the sensor; the right-angle trapezoidal flow channel is arranged below the middle part of the rectangular flow channel, the upper bottom of the right-angle trapezoidal flow channel is communicated with the middle part of the rectangular flow channel, and the lower bottom of the right-angle trapezoidal flow channel extends to the interface between the ear base plate and the sensor mounting end face;
the sensor mounting end face is provided with a support counterweight 8, the support counterweight changes the gravity center position of the ear seat, the natural frequency of the vibration sensor support is reduced, and resonance caused by the fact that the natural frequency is the same as the driving frequency of the combustion engine casing is avoided.
The invention optimizes the geometric shape of the sensor bracket, reduces the natural frequency of the bracket, and avoids the interference to the vibration value acquisition caused by the resonance generated by the same natural frequency as the driving frequency of the combustion engine casing; the invention increases the balance weight of the bracket to change the position of the gravity center, reduces the natural frequency of the bracket, and avoids the interference to the acquisition of the vibration value caused by the resonance generated by the same natural frequency as the driving frequency of the casing of the gas turbine. Two bolt holes are formed in the lug base plate and the fastening metal plate, the fastening metal plate is installed on the other side of the casing flange, the fastening metal plate is connected with the bolt holes in the upper end of the lug base plate through fastening bolts, the vibration sensor support is tensioned, and axial swing vibration of the support is effectively reduced. The invention designs the cooling flow channel in the bracket, the cooling gas is accessed from the bracket interface, and the vibration sensor probe is cooled through the flow channel, and the cooling effect of the invention is obviously better than that of the conventional bracket.
The invention provides a vibration sensor bracket for a gas turbine, which consists of joints such as an ear seat substrate, a heat insulation baffle plate and a fastening metal plate, and also comprises a fastening piece, a pipeline joint and the like. The lug base plate comprises two mounting holes which are respectively a round through hole and a long round through hole, and the lower round through hole is matched with the casing flange for fixed mounting. And a cooling air groove is formed in the mounting end face of the sensor, and cooling air flows in through an air pipe to cool the vibration sensor probe. By adjusting the thickness of each structure and mounting and matching, the support has lower gravity center and is more stable in operation, and the support can more accurately reflect the vibration condition of the gas turbine body. Forced vibration is not easy to occur in the running of the gas turbine unit, and the influence of resonance on the sensor is avoided; the invention adds the fastening metal plate to increase the axial constraint for the bracket, and simultaneously adopts a novel flow channel design to optimize the cooling effect of the vibration sensor, so that the data acquired by the vibration sensor is more accurate; the invention has higher economic benefit, can effectively avoid the machine set from stopping due to the fluctuation of the vibration value caused by bracket resonance and the like, and reduces the waste of fuel of the combustion engine and the loss of the machine set.
As shown in fig. 1, the fastening and mounting plate 2 is fixed above the casing flange through a casing flange fixing hole 3, and the upper end of the fastening metal plate 2 and the upper end of the ear base plate 1 are tightened by passing a bolt through a bolt fixing hole 4. Wherein the ear seat base plate 1 is opposite to the fastening metal plate 2 and is respectively fixed at two ends of the flange mounting surface, and the mounting position is required to be as shown in figure 3.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A vibration sensor support for a gas turbine, characterized in that: comprises a fastening metal plate and an ear seat; the ear seat consists of an ear seat substrate, a sensor mounting end face and a heat insulation baffle; the ear seat base plate is integrally square, the upper end of the left side of the ear seat base plate is provided with a trapezoidal bulge, the upper part of the left side of the ear seat base plate is provided with a long round through hole, the lower part of the left side of the ear seat base plate is provided with a round through hole, and the upper part and the lower part of the right side of the ear seat base plate are provided with fixing holes; the fastening metal plate consists of a polygonal plate, a square plate and a parallelogram transition section; the upper structure of the polygonal plate is completely the same as that of the upper structure of the left side of the lug base plate, the left lower corner of the bottom of the polygonal plate is a triangular unfilled corner, and the left side of the polygonal plate is provided with a long round through hole and a round through hole which are the same as those of the left side of the lug base plate; the left side and the right side of the parallelogram transition section are respectively connected with a polygonal plate and a square plate; the right side of the square plate part of the fastening metal plate is provided with a fixing hole which is the same as the right side of the ear seat substrate; the bottom of the sensor mounting end surface is vertically connected with the bottom of the ear seat substrate, and a cooling flow channel is formed in the sensor mounting end surface; the whole heat insulation baffle is L-shaped, and the right-angle part of the L-shape is subjected to circular arc smoothing treatment; the heat insulation baffle is integrally arranged at the upper left corner of the mounting end face of the sensor; the cooling flow channel consists of a square flow channel, a right-angle trapezoidal flow channel and a rectangular flow channel; the rectangular flow channel is arranged in the center of the sensor mounting end face and extends from the left end of the sensor mounting end face to the right end of the sensor mounting end face; the square flow channel is arranged above the middle part of the rectangular flow channel, the bottom of the square flow channel is communicated with the middle part of the rectangular flow channel, and the upper end of the square flow channel extends to the interface between the heat insulation baffle and the mounting end face of the sensor; the right-angle trapezoidal flow channel is arranged below the middle part of the rectangular flow channel, the upper bottom of the right-angle trapezoidal flow channel is communicated with the middle part of the rectangular flow channel, and the lower bottom of the right-angle trapezoidal flow channel extends to the interface between the ear base plate and the sensor mounting end face; the sensor mounting end face is provided with the support counterweight, the support counterweight changes the gravity center position of the ear seat, the natural frequency of the vibration sensor support is reduced, and resonance caused by the fact that the natural frequency is the same as the driving frequency of the combustion engine casing is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524875.3A CN112728309A (en) | 2020-12-22 | 2020-12-22 | Vibration sensor support for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524875.3A CN112728309A (en) | 2020-12-22 | 2020-12-22 | Vibration sensor support for gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112728309A true CN112728309A (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011524875.3A Pending CN112728309A (en) | 2020-12-22 | 2020-12-22 | Vibration sensor support for gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112728309A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB617651A (en) * | 1946-10-09 | 1949-02-09 | W P Butterfield Ltd | Improvements in or relating to vehicle tank mountings |
| US20130168513A1 (en) * | 2011-12-15 | 2013-07-04 | Centrum Dopravniho Vyzkumu V.V.I. | Positioning device |
| US20130315728A1 (en) * | 2012-05-28 | 2013-11-28 | Hon Hai Precision Industry Co., Ltd. | Fixing device for fan |
| CN204477176U (en) * | 2015-01-21 | 2015-07-15 | 山东美晨科技股份有限公司 | A kind of Novel rear axle dynamic vibration absorber |
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| CN206439114U (en) * | 2016-12-21 | 2017-08-25 | 中国人民解放军92537部队 | A kind of sensor stand suitable for the outer casing vibration acquisition of gas turbine |
| US20170268717A1 (en) * | 2016-03-16 | 2017-09-21 | Daniel Roskamp | Quick release equipment mount |
| CN208579902U (en) * | 2018-08-10 | 2019-03-05 | 中国航天空气动力技术研究院 | A kind of wind-tunnel cup damping screen tension device |
| CN109931485A (en) * | 2019-04-15 | 2019-06-25 | 中国船舶重工集团公司第七0三研究所 | A kind of vibration acceleration sensor bracket of band heat dissipation and heat insulating function |
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-
2020
- 2020-12-22 CN CN202011524875.3A patent/CN112728309A/en active Pending
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| US20170268717A1 (en) * | 2016-03-16 | 2017-09-21 | Daniel Roskamp | Quick release equipment mount |
| CN105858920A (en) * | 2016-04-01 | 2016-08-17 | 江苏荆溪环保设备有限公司 | Rubber tube type microporous aerator |
| CN206439114U (en) * | 2016-12-21 | 2017-08-25 | 中国人民解放军92537部队 | A kind of sensor stand suitable for the outer casing vibration acquisition of gas turbine |
| CN208579902U (en) * | 2018-08-10 | 2019-03-05 | 中国航天空气动力技术研究院 | A kind of wind-tunnel cup damping screen tension device |
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Application publication date: 20210430 |
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