CN205067042U - Utilize blade dynamic frequency testing arrangement of magnetic force excitation - Google Patents
Utilize blade dynamic frequency testing arrangement of magnetic force excitation Download PDFInfo
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- CN205067042U CN205067042U CN201520827592.4U CN201520827592U CN205067042U CN 205067042 U CN205067042 U CN 205067042U CN 201520827592 U CN201520827592 U CN 201520827592U CN 205067042 U CN205067042 U CN 205067042U
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Abstract
The utility model provides an utilize blade dynamic frequency testing arrangement of magnetic force excitation, utilizes the magnetic force vibration exciter to exert the exciting force to rotating vane, and with foil gage perception blade vibration information, the signalling machine comes out the blade vibration information of foil gage perception through the real -time transmission of radio, and blade vibration information is gathered through receiving antenna receive real -time to the signal reception machine to transfer the multiplexer (MUX with blade vibration information. Each way input -output channel of magnetic tape recorder is connected with multichannel signal controller for save each passageway blade vibration information. Utilize multichannel signal controller to select perhaps multiple signal of the same kind to give data analyzer for analysis blade vibration characteristic. Thermometer, speedometer, oscillograph are used for near the temperature of real -time supervision signalling machine, impeller velocity, each way signal respectively. The utility model provides a blade natural frequency under rotation rate the test and adopt gaseous excitation mode can arouse the problem of the super temperature of equipment, simple structure, the security height, with low costs, pollution -free, can satisfy blade natural frequency under rotation and rate test requirement.
Description
Technical field:
The utility model relates to a kind of blade natural frequency under rotation rate proving installation, particularly a kind of blade dynamic frequency proving installation utilizing magnetic force exciting.
Background technology:
Blade natural frequency under rotation rate measuring technology provides important test figure foundation for the design of the machinery impeller vane such as steam turbine, gas turbine, is one of the gordian technique in blade design and experimental technique field.Along with blade vibration and the development of Structural Strength Design technology and deepening continuously to blade vibration safety research, requirements at the higher level are proposed to the security of blade natural frequency under rotation rate test macro work, reliability and accuracy.
The core of blade natural frequency under rotation rate method of testing utilizes radio signal transmission technology to install signal transmitter on pivoting leaf dish, foil gauge is perceived blade vibration information converts electric signal to and emits, recycling signal receiver and registering instrument carry out receiving, gathering, and then utilize data analyzer to carry out blade vibration analysis.
Along with turbomachine is constantly to high-power, high-level efficiency future development, length of blade constantly increases, single-stage fan power improves constantly, the requirement of blade natural frequency under rotation measuring technology is also improved constantly, and the blade natural frequency under rotation test mode of traditional nitrogen exciting mode, affect the vacuum tightness of test environment, and along with the continuous increase of exciting air-flow, blade does work to air-flow, and temperature is raised, and causes the unfavorable factors such as testing equipment overtemperature.
At present, blade natural frequency under rotation rate test macro utilizes the mode of nitrogen jet exciting, and there are the following problems for this mode: 1, nitrogen exciting can affect the vacuum tightness in test vacuum cylindrical shell; 2, temperature in test cylindrical shell can be caused to raise; 3, each test needs to lay in nitrogen in advance, and cost is higher; 4, nitrogen pressure has loss, and exciting force reduces; 5, artificial multiple switching nitrogen pot valve is needed in test, inconvenient.
Utility model content:
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides a kind of blade dynamic frequency proving installation utilizing magnetic force exciting.
For achieving the above object, the utility model adopts following technical scheme to be achieved:
A kind of blade dynamic frequency proving installation utilizing magnetic force exciting, comprise vacuum cylindrical shell, and the preposition rocker be arranged in vacuum cylindrical shell and rearmounted rocker, two rockers are provided with rotating shaft, one end of this rotating shaft extend out to the outer and drive motor output shaft external with being arranged on vacuum cylinder of preposition rocker and is connected, it is outer and be provided with rectangle gear that the other end extend out to rearmounted rocker, rotating shaft between two rockers is provided with impeller, and this impeller comprises wheel disc and is evenly arranged on several blades in wheel disc circumference;
The speed probe be arranged on for testing the speed according to rectangle pinion rotation on rearmounted rocker is also comprised in vacuum cylindrical shell, be arranged on the receiving antenna on preposition rocker and temperature sensor, be arranged on the foil gauge on blade vibration take-off location and the signal transmitter be arranged on wheel disc and emitting antenna, and foil gauge is connected with signal transmitter by foil gauge lead-in wire, and be provided for the magnetic force vibrator of blade exciting;
Vacuum cylinder is external is provided with signal receiver, multiple signals controller, oscillograph, tachometer gage, data analyzer and thermometer, wherein, temperature sensor is connected with thermometer by temperature sensor wires, receiving antenna is connected with signal receiver by receiving antenna lead-in wire, signal receiver output terminal is connected with multiple signals controller input end, speed probe is connected with multiple signals controller by speed probe lead-in wire, and multiple signals controller output end is connected with data analyzer input end with oscillograph input end, tachometer gage input end respectively.
The utility model further improves and is: one end of rotating shaft is connected by the drive motor output shaft that shaft coupling is external with being arranged on vacuum cylinder.
The utility model further improves and is: vacuum cylinder is external is also provided with the magnetic tape recorder be connected with multiple signals controller.
The utility model further improves and is: be provided with two rocker tracks be arranged in parallel in vacuum cylindrical shell, and preposition rocker and rearmounted rocker are arranged on these two rocker tracks respectively.
The utility model further improves and is: each rocker track is all provided with a magnetic force vibrator by exciter support.
The utility model further improves and is: magnetic force vibrator adopts rectangular parallelepiped permanent magnet or cylindrical permanent magnet iron, rectangular parallelepiped permanent magnet or cylindrical permanent magnet iron are installed in rectangular parallelepiped magnet mounting box and right cylinder magnet mounting box respectively, all filled by insulating gel between rectangular parallelepiped permanent magnet and rectangular parallelepiped magnet mounting box inwall and between cylindrical permanent magnet iron and right cylinder magnet mounting box inwall, rectangular parallelepiped magnet mounting box or right cylinder magnet mounting box are fixed on exciter support, and magnetic force vibrator and impeller keep horizontal range 1 ~ 30 centimetre.
The utility model further improves and is: during magnetic force vibrator employing rectangular parallelepiped permanent magnet, rectangular parallelepiped permanent magnet is parallel to blade trailing edge direction and arranges along its long limit.
The utility model further improves and is: be also provided with speed probe support and antenna holder in vacuum cylindrical shell, and speed probe support one end is fixed on rearmounted rocker, and the other end is external part, and speed probe is arranged on the external part of rearmounted rocker; Antenna holder is sleeved in rotating shaft and one end and is fixed on preposition rocker, and receiving antenna and temperature sensor are separately positioned on antenna holder.
The utility model further improves and is: the wheel disc end face of impeller circumferentially on offer compensating groove or some equalizing ports be evenly arranged;
When wheel disc end face offering some equalizing ports be evenly arranged, the transmitter box being suitable for equalizing port is provided with in equalizing port, the interior resin glue that adopts of transmitter box being suitable for equalizing port is packaged with signal transmitter and battery, and by round insulation cover plate for sealing, this round insulation lid surface is integrated with loop transmit antenna, and round insulation cover plate is distributed with the positive and negative port of power supply, foil gauge port and antenna port, battery plus-negative plate is connected with the positive and negative port of power supply, foil gauge is connected with foil gauge port by foil gauge lead-in wire, loop transmit antenna is connected with antenna port,
When wheel disc end face offers compensating groove, the transmitter box being suitable for compensating groove is provided with in compensating groove, resin glue is adopted to be packaged with signal transmitter and battery in transmitter box, and by square insulating cover plate for sealing, this square insulation cover plate surface is integrated with square emitter antenna, and square insulating cover plate is distributed with the positive and negative port of power supply, foil gauge port and antenna port, battery plus-negative plate is connected with the positive and negative port of power supply, foil gauge is connected with foil gauge port by foil gauge lead-in wire, and loop transmit antenna is connected with antenna port.
The utility model further improves and is: the sidewall of vacuum cylindrical shell offers vacuum cylindrical shell fairlead, and it is external that temperature sensor wires, receiving antenna lead-in wire and speed probe lead-in wire all lead to vacuum cylinder by vacuum cylindrical shell fairlead.
Relative to prior art, the utility model has following technique effect:
A kind of blade dynamic frequency proving installation utilizing magnetic force exciting of the utility model, comprise the rotary part of the adjoint vane rotary installed in vacuum cylindrical shell, be fixed on the on-rotatably moving part in vacuum cylindrical shell, and be arranged on the external collection of vacuum cylinder, storage and analytical equipment.Adopt the vibration information of foil gauge perception blade, strain variation blade vibration caused is directly changed into resistance variations, and is emitted by electric signal, and without the need to adopting other indirect conversion methods to vibration information, good reliability, accuracy is high.
Employing magnetic force exciting can according to leaf blade size, exciting force size, and select the magnetic force vibrator of different model, magnetic force can keep constant in test process, can not decay, and can not give in vacuum cylindrical shell and introduce gas, can not affect the vacuum tightness of vacuum cylindrical shell.Adopt magnetic force vibrator, before testing, prepare a large amount of high pressure nitrogen, do not need manual operation in test process, security is high, and easy for installation, pollution-free, and cost is low, can reuse.
Multiplexer (MUX makes the switching tested between each passage in front system debug and test control more easy.Magnetic tape recorder can ensure to store the continuity of data, and comparing digital storage equipment more can the continuous print blade vibration information of rediscover.Temperature sensor is fixedly mounted on antenna holder, can monitor the environment temperature of the machine of penetrating that signals in real time, ensures that test process signal transmitter works in safe temperature range, improves device security.
In sum, a kind of blade dynamic frequency proving installation utilizing magnetic force exciting of the utility model, solving the dynamic test frequently of traditional blades adopts nitrogen exciting mode can cause equipment overtemperature and the hypodynamic problem of nitrogen exciting, the measurement way of blade dynamic frequency is measured under providing a kind of rotation status, be applicable to the dynamic test frequently of various deviated splitter vane, accurate blade natural frequency under rotation rate can be obtained, for blade design sizing, safe operation provide technical support.Can turbomachine be widely used in, to improve the security of blade, increase the active time of blade.
Accompanying drawing illustrates:
Fig. 1 is the overall schematic of the blade dynamic frequency proving installation utilizing magnetic force exciting;
Fig. 2 is magnetic force vibrator, foil gauge, be suitable for the transmitter box scheme of installation of leaf dish equalizing port;
Fig. 3 is for being suitable for leaf dish compensating groove transmitter box scheme of installation;
Fig. 4 is the transmitter box vertical view being suitable for equalizing port;
Fig. 5 is the transmitter box front elevation being suitable for equalizing port;
Fig. 6 is the transmitter box vertical view being suitable for compensating groove;
Fig. 7 is the transmitter box front elevation being suitable for compensating groove;
Fig. 8 is cuboid-type magnetic force vibrator vertical view;
Fig. 9 is cuboid-type magnetic force vibrator side view;
Figure 10 is cylinder type magnetic force vibrator vertical view;
Figure 11 is cylinder type magnetic force vibrator side view.
Wherein: 1, impeller; 2, rotating shaft; 3, preposition rocker; 4, rearmounted rocker; 5, rocker track; 6, vacuum cylindrical shell; 7, shaft coupling; 8, drive motor; 9, receiving antenna; 10, antenna holder; 11, temperature sensor; 12, speed probe; 13, speed probe support; 14, rectangle gear; 15, magnetic force vibrator; 16, magnetic force exciter support; 17, vacuum cylindrical shell fairlead; 18, signal receiver; 19, multiple signals controller; 20, magnetic tape recorder; 21, oscillograph; 22, tachometer gage; 23, data analyzer; 24, thermometer; 25, receiving antenna lead-in wire; 26, temperature sensor wires; 27, speed probe lead-in wire; 28, blade, 29, wheel disc; 30, foil gauge; 31, the signal transmitter box of equalizing port is suitable for; 32, equalizing port; 33, foil gauge lead-in wire; 34, compensating groove; 35, the signal transmitter box of compensating groove is suitable for; 36, round insulation cover plate; 37, loop transmit antenna; 38, the positive and negative port of power supply; 39, foil gauge port; 40, antenna port; 41, signal transmitter; 42, battery; 43, resin glue; 44, square insulating cover plate; 45, square emitter antenna; 46, rectangular parallelepiped permanent magnet; 47, insulating gel; 48, rectangular parallelepiped magnet mounting box; 49, cylindrical permanent magnet iron; 50, right cylinder magnet mounting box.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, a kind of blade dynamic frequency proving installation utilizing magnetic force exciting of the utility model, comprise vacuum cylindrical shell 6, and the preposition rocker 3 be arranged in vacuum cylindrical shell 6 and rearmounted rocker 4, tested impeller 1 is arranged on preposition rocker 3, rearmounted rocker 4 together with rotating shaft 2, be fixed in vacuum cylindrical shell 6 on rocker track 5, rotating shaft 2 leading portion shaft coupling 7 is connected with drive motor 8 output shaft outside vacuum cylindrical shell 6.
Can choose one or more magnetic force vibrator 15 along impeller 1 circumferentially, magnetic force exciter support 16 to be fixed in vacuum cylindrical shell 6 on rocker track 5.Receiving antenna 9 is fixed on preposition rocker 3 together with antenna holder 10, and tours antenna diameter is identical with impeller balance hole 29 or compensating groove 31 diameter, during installation and transmitter box horizontal range keep 3 ~ 50 centimetres.Temperature sensor 11 is fixedly mounted on antenna holder 10, keeps 5 ~ 80 centimetres with transmitter box horizontal range.Speed probe 12 is arranged on rotating shaft 2 end, and speed probe support 13 is fixed on rear rocker 4, and by measuring the pulse signal of axle head rectangle gear 14, and be converted into rotating speed, speed probe 12 and rectangle gear 14 keep 2 ~ 30 cm distance.Receiving antenna lead-in wire 25, temperature sensor wires 26, speed probe lead-in wire 27 fixedly mount along antenna holder 10, two rockers and rocker track 5 respectively, and concentrate and draw from vacuum cylindrical shell fairlead 17, then seal vacuum cylindrical shell fairlead 17.The equipment that in test, above equipment is positioned at vacuum cylindrical shell 6 must fixedly mount.
Further, by vacuum cylindrical shell fairlead 17 three lead-in wires connector drum external monitor analytical instrument respectively out, concrete mode is: temperature sensor wires 26 connects thermometer 24, for the temperature of signal transmitter annex in Real-Time Monitoring cylindrical shell.Receiving antenna goes between 25 connection signal receivers 18 for receiving each road transmitter signal, and signal receiver 18 is connected with multiple signals controller 19.Speed probe lead-in wire 27 is directly connected with multiple signals controller 19.Multiple signals controller 19 is connected with multichannel recorder 20, oscillograph 21, tachometer gage 22, data analyzer 23 respectively.Multichannel recorder 20 stored record each road vibration information and rotary speed information.Oscillograph 21 is for real time inspection each road vibration signal.Tachometer gage 22 is for Real-Time Monitoring wheel speed.Data analyzer 23, for the time domain of each road vibration signal, frequency-domain analysis, judges blade each rank dynamic frequency.
See Fig. 2, magnetic force exciter support 16 two ends are fixed by bolts on two the rocker tracks 5 in left and right, and two magnetic force vibrators 15 are arranged along impeller 1 formed symmetrical, and are fixed on magnetic force exciter support 16.Magnetic force vibrator 15 adopts rectangular parallelepiped permanent magnet 46 or cylindrical permanent magnet iron 49, rectangular parallelepiped permanent magnet 46 or cylindrical permanent magnet iron 49 are installed on respectively and are placed in rectangular parallelepiped magnet mounting box 48 and right cylinder magnet mounting box 50, all filled by insulating gel 47 between rectangular parallelepiped permanent magnet 46 and rectangular parallelepiped magnet mounting box 48 inwall and between cylindrical permanent magnet iron 49 and right cylinder magnet mounting box 50 inwall, rectangular parallelepiped magnet mounting box 48 or right cylinder magnet mounting box 50 are fixed on exciter support 16, for rectangular parallelepiped permanent magnet 46, its long limit is parallel to blade trailing edge, magnetic force vibrator 15 and impeller clearance keep 1 ~ 30 centimetre.
See Fig. 2,3, foil gauge 30 is arranged in bottom blade profile, distance blade type platform 2 ~ 50 centimetres, and distance blade 28 trailing edge 1 ~ 20 centimetre, adopts special fire resistant resin glue.Transmitter box is fixedly mounted on wheel disc equalizing port or compensating groove (be suitable for equalizing port transmitter box 31, be suitable for compensating groove transmitter box 35).Go between with bifilar foil gauge between foil gauge 30 with transmitter box and 33 to be connected; foil gauge goes between 33 fixed and arranged on blade 28 and wheel disc 29; foil gauge lead-in wire 33 is first fixed with the little clamp interval of spot welding, then seals along lead-in wire epoxide-resin glue, and last spot welding one deck light sheet is protected.In test, above equipment is with blade and blade dish High Rotation Speed in vacuum cylindrical shell, must fixedly mount on blade and wheel disc, prevents equipment in test from throwing away, clashes into other object.
See Fig. 4,5, the transmitter box 31 being applicable to equalizing port installs round insulation cover plate 36 additional, round insulation cover plate 36 set of surfaces circularizes emitting antenna 37, distribution power port 38, foil gauge connectivity port 39 and emitting antenna port 40 on round insulation cover plate 36.Signal transmitter 41 and battery 42 vertically interval are placed, and adopt resin glue 43 to be encapsulated in transmitter box 31.
See Fig. 6,7, square insulation cover plate 44 on the transmitter box 35 being applicable to compensating groove, square insulating cover plate 44 set of surfaces squarely emitting antenna 45, distribution power port 38, foil gauge connectivity port 39 and emitting antenna port 40 on square insulating cover plate 44.Signal transmitter 41 and battery 42 in the horizontal direction interval are placed, and adopt resin glue 43 to be encapsulated in transmitter box 35.
See Fig. 8,9, rectangular parallelepiped permanent magnet 46 is arranged in cuboid-type magnet mounting box 48, and rectangular parallelepiped permanent magnet 46 surrounding and magnet mounting box 48 are apart from 1 ~ 5 centimetre, and surrounding gap-fill insulating gel 47 is reinforced.
See Figure 10,11, cylindrical permanent magnet iron 49 is arranged in cylinder type magnet mounting box 50, and cylindrical permanent magnet iron 49 surrounding and magnet mounting box 50 are apart from 1 ~ 5 centimetre, and surrounding gap-fill insulating gel 47 is reinforced.
In order to further understand the utility model, now its course of work is explained as follows.
During work, magnetic force vibrator 15 pairs of rotating vanes 28 are utilized to apply exciting force, with foil gauge 30 perception blade 28 vibration information, signal transmitter 41 by blade 28 vibration information of foil gauge 30 perception by radio real time emission out, signal receiver 18 gathers blade 28 vibration information by receiving antenna real-time reception, and blade 28 vibration information is passed to multiple signals controller 19.Magnetic tape recorder 20 each road IO channel is connected with multiple signals controller 19, for storing each passage vanes vibration information.Multiple signals controller 19 is utilized to select a road or multiple signals to data analyzer 23, for analyzing blade vibration characteristic.Thermometer 24, tachometer gage 22, oscillograph 21 are respectively used to temperature near Real-Time Monitoring signal transmitter 41, wheel speed, each road signal.
Claims (10)
1. one kind utilizes the blade dynamic frequency proving installation of magnetic force exciting, it is characterized in that: comprise vacuum cylindrical shell (6), and the preposition rocker (3) be arranged in vacuum cylindrical shell (6) and rearmounted rocker (4), two rockers are provided with rotating shaft (2), one end of this rotating shaft (2) extend out to preposition rocker (3) outward and be arranged on vacuum cylindrical shell (6) drive motor outward (8) output shaft and be connected, the other end extend out to rearmounted rocker (4) and be provided with rectangle gear (14) outward, rotating shaft (2) between two rockers is provided with impeller (1), this impeller (1) comprises wheel disc (29) and is evenly arranged on several blades (28) in wheel disc (29) circumference,
Also comprise in vacuum cylindrical shell (6) and being arranged on rearmounted rocker (4) for rotating the speed probe (12) tested the speed according to rectangle gear (14), be arranged on the receiving antenna (9) on preposition rocker (3) and temperature sensor (11), be arranged on the foil gauge (30) on blade (28) vibration pickup position and the signal transmitter (41) be arranged on wheel disc (29) and emitting antenna, and foil gauge (30) is connected with signal transmitter (41) by foil gauge lead-in wire (33), and be provided for the magnetic force vibrator (15) of blade (28) exciting,
Vacuum cylindrical shell (6) is outside equipped with signal receiver (18), multiple signals controller (19), oscillograph (21), tachometer gage (22), data analyzer (23) and thermometer (24), wherein, temperature sensor (11) is connected with thermometer (24) by temperature sensor wires (26), receiving antenna (9) is connected with signal receiver (18) by receiving antenna lead-in wire (25), signal receiver (18) output terminal is connected with multiple signals controller (19) input end, speed probe (12) is connected with multiple signals controller (19) by speed probe lead-in wire (27), multiple signals controller (19) output terminal respectively with oscillograph (21) input end, tachometer gage (22) input end is connected with data analyzer (23) input end.
2. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 1, is characterized in that: one end of rotating shaft (2) by shaft coupling (7) be arranged on vacuum cylindrical shell (6) drive motor outward (8) output shaft and be connected.
3. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 1, is characterized in that: vacuum cylindrical shell (6) is also provided with the magnetic tape recorder (20) be connected with multiple signals controller (19) outward.
4. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 1, it is characterized in that: be provided with two rocker tracks (5) be arranged in parallel in vacuum cylindrical shell (6), preposition rocker (3) and rearmounted rocker (4) are arranged on these two rocker tracks (5) respectively.
5. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 4, is characterized in that: each rocker track (5) is all provided with a magnetic force vibrator (15) by exciter support (16).
6. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 5, it is characterized in that: magnetic force vibrator (15) adopts rectangular parallelepiped permanent magnet (46) or cylindrical permanent magnet iron (49), rectangular parallelepiped permanent magnet (46) or cylindrical permanent magnet iron (49) are installed in rectangular parallelepiped magnet mounting box (48) and right cylinder magnet mounting box (50) respectively, all filled by insulating gel (47) between rectangular parallelepiped permanent magnet (46) and rectangular parallelepiped magnet mounting box (48) inwall and between cylindrical permanent magnet iron (49) and right cylinder magnet mounting box (50) inwall, rectangular parallelepiped magnet mounting box (48) or right cylinder magnet mounting box (50) are fixed on exciter support (16), magnetic force vibrator (15) and impeller (1) keep horizontal range 1 ~ 30 centimetre.
7. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 6, it is characterized in that: during magnetic force vibrator (15) employing rectangular parallelepiped permanent magnet (46), rectangular parallelepiped permanent magnet (46) is parallel to blade (28) trailing edge direction and arranges along its long limit.
8. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 1, it is characterized in that: in vacuum cylindrical shell (6), be also provided with speed probe support (12) and antenna holder (10), speed probe support (12) one end is fixed on rearmounted rocker (4), the other end is external part, and speed probe (12) is arranged on the external part of rearmounted rocker (4); Antenna holder (10) is sleeved on that rotating shaft (2) is upper and one end is fixed on preposition rocker (3), and receiving antenna (9) and temperature sensor (11) are separately positioned on antenna holder (10).
9. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 1, is characterized in that: wheel disc (29) end face of impeller (1) circumferentially on offer compensating groove (34) or some equalizing ports (32) be evenly arranged;
When wheel disc (29) end face offering some equalizing port (32) that are evenly arranged, the transmitter box (31) being suitable for equalizing port is provided with in equalizing port (32), the interior resin glue (43) that adopts of transmitter box (31) being suitable for equalizing port is packaged with signal transmitter (41) and battery (42), and by round insulation cover plate (36) sealing, this round insulation cover plate (36) surface is integrated with loop transmit antenna (37), and round insulation cover plate (36) is distributed with the positive and negative port of power supply (38), foil gauge port (39) and antenna port (40), battery (42) both positive and negative polarity is connected with the positive and negative port of power supply (38), foil gauge (30) is connected with foil gauge port (39) by foil gauge lead-in wire (33), loop transmit antenna (37) is connected with antenna port (40),
When wheel disc (29) end face being offered compensating groove (34), the transmitter box (35) being suitable for compensating groove is provided with in compensating groove (34), resin glue (43) is adopted to be packaged with signal transmitter (41) and battery (42) in transmitter box (35), and by square insulating cover plate (44) sealing, this square insulation cover plate (44) surface is integrated with square emitter antenna (45), and square insulating cover plate (44) is distributed with the positive and negative port of power supply (38), foil gauge port (39) and antenna port (40), battery (42) both positive and negative polarity is connected with the positive and negative port of power supply (38), foil gauge (30) is connected with foil gauge port (39) by foil gauge lead-in wire (33), loop transmit antenna (37) is connected with antenna port (40).
10. a kind of blade dynamic frequency proving installation utilizing magnetic force exciting according to claim 1, it is characterized in that: the sidewall of vacuum cylindrical shell (6) offers vacuum cylindrical shell fairlead (17), temperature sensor wires (26), receiving antenna lead-in wire (25) and speed probe lead-in wire (27) all lead to vacuum cylindrical shell (6) outward by vacuum cylindrical shell fairlead (17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520827592.4U CN205067042U (en) | 2015-10-22 | 2015-10-22 | Utilize blade dynamic frequency testing arrangement of magnetic force excitation |
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| CN201520827592.4U CN205067042U (en) | 2015-10-22 | 2015-10-22 | Utilize blade dynamic frequency testing arrangement of magnetic force excitation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258887A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Blade dynamic frequency test apparatus using magnetic excitation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258887A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Blade dynamic frequency test apparatus using magnetic excitation |
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