CN201765054U - Portable shaft vibration measuring apparatus - Google Patents
Portable shaft vibration measuring apparatus Download PDFInfo
- Publication number
- CN201765054U CN201765054U CN2010202524865U CN201020252486U CN201765054U CN 201765054 U CN201765054 U CN 201765054U CN 2010202524865 U CN2010202524865 U CN 2010202524865U CN 201020252486 U CN201020252486 U CN 201020252486U CN 201765054 U CN201765054 U CN 201765054U
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- Prior art keywords
- sensor
- magnetic
- axle
- vibration
- signal processing
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- Expired - Fee Related
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Abstract
The utility model discloses a portable shaft vibration measuring apparatus, which comprises a magnetic sensor (3) and a handheld shaft vibration signal processing device (4) as shown in figures. A body of the magnetic sensor (3) is an L-shaped metal support, the shaft vibration sensor is installed on an arm, a magnetic base is installed on the other arm, distance from a vibration measuring sensor probe to the surface of a measured shaft can be adjusted according to practical field conditions, the magnetic base can be absorbed onto a stationary iron metal part close to the rotating shaft, the magnetic sensor transmits measured vibration signals to the handheld shaft vibration signal processing device via a lead, and after analysis and processing, a final shaft measurement result is displayed.
Description
Technical field
The utility model is a kind of portable contactless vibration measuring instrument that is used to measure the turning axle vibration, belongs to vibration analysis and technical field of measurement and test.
Background technology
Along with the development of unit to the maximization direction, separately the monitoring axle shakes or watt shakes and all can not reflect the unit vibration characteristic comprehensively, axle is shaken and watt shakes integrate analysis often can excavate than independent watt shake or axle shake data deeply the information of Duoing.And at present mainly concentrate on the monitoring of watt shaking at the portable monitoring means of rotating machinery vibrating, be still blank for the shake portable monitoring of signal of axle.Vibration monitoring at turning axle mainly is by measuring near the fixing vibration-measuring sensor of turning axle location arrangements in advance in the unit design phase at present, do not arrange that for the scene turning axle vibration survey of measuring point or inconvenient fixed and arranged vibration transducer position still do not have effective means, be unfavorable for operating rotating machinery shaft shaken and carry out comprehensively, in real time and monitoring easily, only rely on the single watt of effect of signals diagnostic result that shakes, even incur loss through delay processing opportunity.More especially do not arrange that vibration measuring point or measuring point arrange less relatively subsidiary engine equipment, when vibration fault occurring and need handle, it is particularly outstanding that this problem seems.
The utility model content
The utility model purpose is at the deficiencies in the prior art, a kind of portable shaft vibration gauge to the high-speed rotating shaft vibration survey is provided, and particularly status monitoring, safe operation, fault diagnosis and the performance evaluation of high speed such as steam turbine, compressor rotating machinery provide a kind of detection means easily for rotating machinery.
The utility model provides a kind of portable shaft vibration gauge, comprises that magnetic sensor and the hand-held axle signal processing apparatus that shakes forms.
The shake input end of signal processing apparatus of the output terminal of described magnetic sensor and hand-held axle is connected.
Described magnetic sensor comprises a L type support, on an arm of L type support, be provided with the sensor chute, slidely connect eddy current sensor in the sensor chute, described eddy current sensor is fixed by first nut and second nut that are threaded with it and be positioned at arm both sides of L type support.
Another arm of described L type support is provided with the magnetic base chute, slidely connects magnetic base in the magnetic base chute, and magnetic base is fixed by the 3rd nut that is threaded with it.Because most of high-speed rotating machine shell is a steel, adopt magnetic base fixation of sensor well.
The described hand-held axle signal processing apparatus that shakes receives axle that the magnetic sensor transmission the comes signal that shakes.Axle vibration sensor input signal is separated into DC component and AC compounent after pre-process.DC component is proportional to the static clearance between vibration transducer measuring head and the metal measured object surface, and AC compounent is proportional to dynamic displacement between the two, i.e. vibration.DC component is carried out size through amplification and is judged that if measuring sonde and testee surface distance are excessive, then output signal shows the outrange alarm to LCD, as outrange not then in the gap between demonstration vibration measuring probe and the testee on the LCD.AC compounent becomes corresponding digital signal through being sent to A/D converter after filtering, detection and the processing and amplifying, shows the shaft size of shaking by LCD at last.
The described hand-held axle signal processing apparatus that shakes adopts built-in 7.4V lithium battery power supply, and provides power supply for described magnetic sensor simultaneously.
The portable shaft vibration measurement mechanism beneficial effect that the utility model proposes is as follows:
1. the utility model has been broken away from shake measuring point in the metering system of traditional rotating machinery shaft and has been fixed in the drawback in somewhere, can select monitoring location flexibly according to on-the-spot actual needs.The high-speed rotating machine shell is generally steel, adopt the form of axle vibration sensor carrying magnetic pedestal can be neatly near near rotating shaft the static steel surface arrangement of choice of location axle vibration sensor;
2. the utility model is made up of a magnetic sensor and the hand-held axle signal processing apparatus that shakes, for be not easy to disposed axle shake measuring point or from cost benefit consider not arrange the rotating machinery of shaft vibration monitoring system proposed a kind of effectively and save the shaft vibration detection scheme of cost;
3. the utility model volume weight is little, is convenient to on-the-spot operating maintenance personnel and carries;
Description of drawings:
Fig. 1 portable shaft vibration gauge test sketch;
Fig. 2 magnetic sensor structural drawing;
Fig. 3 hand-held axle signal processing apparatus circuit block diagram that shakes;
Fig. 4 hand-held axle signal processing apparatus shape assumption diagram that shakes.
Among Fig. 1, the 1st, cylinder; The 2nd, rotating shaft; The 3rd, magnetic sensor; The 4th, the hand-held axle signal processing apparatus that shakes.
Among Fig. 2, the 5th, L type metal support; The 6th, magnetic block; The 7th, hold-down nut; The 8th, vibration-measuring sensor; The 9th, set nut; 10 and 11 is long shape hole chutes.
Among Fig. 4, the 12nd, housing; The 13rd, LCD display; The 14th, toggle switch; The 15th, charge port; The 16th, the vibration-measuring sensor signal input.
Embodiment:
A kind of portable shaft vibration gauge is made up of magnetic sensor 3 and the hand-held axle signal processing apparatus 4 that shakes, and the shake input end of signal processing apparatus 4 of the output terminal of magnetic sensor 3 and hand-held axle is connected.
Described magnetic sensor 3 comprises: L type support 5, on an arm of L type support 5, be provided with sensor chute 10, slidely connect sensor 8 in sensor chute 10, described sensor 8 is by being threaded with it and to be positioned at first nut 91 and second nut 92 of arm both sides of described L type support 5 fixing; On another arm of L type support 5, being provided with magnetic base chute 11, in magnetic base chute 11, slidely connect magnetic base 6, and magnetic base 6 is fixing by the 3rd nut 7 that is threaded with it.Magnetic base 6 can make a vibration sensor 8 be arranged on the steel surface 1 near rotating shaft 2.Chute on the L type support on two arms can flexible sensor 8 and rotating shaft 2 surfaces between distance.
Described hand-held axle shakes signal processing apparatus 4 circuit block diagrams as shown in Figure 2.Magnetic axle vibration sensor 3 input signals are separated into DC component and AC compounent after pre-process.DC component is proportional to the static clearance between a vibration sensor 8 measuring heads and the tested rotating shaft of metal 2 surfaces, and AC compounent is proportional to dynamic displacement between the two, i.e. vibration.DC component is carried out size through amplification and is judged, if the probe and tested rotating shaft 2 surface distances of axle vibration sensor 8 are excessive, then output signal shows the outrange alarm to LCD, as outrange not then in probe that shows axle vibration sensor 8 on the LCD and the gap between tested rotating shaft 2 surfaces.AC compounent becomes corresponding digital signal through being sent to A/D converter after filtering, detection and the processing and amplifying, shows the shafts size of shaking by shake LCD display 13 on the signal processing apparatus 4 of axle at last.
Described hand-held axle shakes signal processing apparatus 4 profiles as shown in Figure 3.Hand-held axle signal processing apparatus 4 external forms of shaking are square, and size as shown in the figure.The axle signal that shakes is gathered the back by front end magnetic sensor 3 and is input to the axle signal processing apparatus 4 that shakes by signal input 16, handles at LCD screen 13 through internal circuit to show measurement results.Measuring instrument adopts built-in 7.4V lithium battery power supply, and provides power supply for magnetic sensor.Charge port 15 is set on the shell 12.On shell 12 panels toggle switch 14 is set, is used for work, charging and off-mode and switches.
Claims (3)
1. portable shaft vibration gauge is made up of magnetic axle vibration sensor (3) and the hand-held axle signal processing apparatus (4) that shakes, and the shake input end of signal processing apparatus (4) of the output terminal of magnetic sensor (3) and hand-held axle is connected.
2. according to right 1 described portable shaft vibration gauge, it is characterized in that: described magnetic sensor (3) comprises 1 L type support (5), on an arm of L type support (5), be provided with sensor chute (10), slidely connect sensor (8) in sensor chute (10), described sensor (8) is by being threaded with it and to be positioned at first nut (91) of arm both sides and second nut (92) of described L type support (5) fixing; On another arm of L type support (5), being provided with magnetic base chute (11), in magnetic base chute (11), slidely connect magnetic base (6), and magnetic base (6) is fixing by the 3rd nut (7) that is threaded with it.
3. portable shaft vibration gauge according to claim 1, it is characterized in that, the axle signal that shakes is gathered the back by magnetic axle vibration sensor (3) and is input to the hand-held axle signal processing apparatus (4) that shakes by signal input (16), handles in LCD screen (13) demonstration measurement result through internal circuit.Charge port (15) is set on the shell (12).On shell (12) panel toggle switch (14) is set, is used for work, charging and off-mode and switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202524865U CN201765054U (en) | 2010-07-07 | 2010-07-07 | Portable shaft vibration measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202524865U CN201765054U (en) | 2010-07-07 | 2010-07-07 | Portable shaft vibration measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765054U true CN201765054U (en) | 2011-03-16 |
Family
ID=43717663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202524865U Expired - Fee Related CN201765054U (en) | 2010-07-07 | 2010-07-07 | Portable shaft vibration measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765054U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915604A (en) * | 2010-07-07 | 2010-12-15 | 东南大学 | Portable shaft vibration gauge |
| CN107340109A (en) * | 2017-06-15 | 2017-11-10 | 大唐东北电力试验研究所有限公司 | Blade vibration evaluation method, device and portable leaf vibration characteristics evaluating apparatus |
| CN107588933A (en) * | 2017-08-24 | 2018-01-16 | 上海复光竞成科技有限公司 | Packaged type navigates by water intensity of illumination distribution test system and method for testing |
-
2010
- 2010-07-07 CN CN2010202524865U patent/CN201765054U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915604A (en) * | 2010-07-07 | 2010-12-15 | 东南大学 | Portable shaft vibration gauge |
| CN107340109A (en) * | 2017-06-15 | 2017-11-10 | 大唐东北电力试验研究所有限公司 | Blade vibration evaluation method, device and portable leaf vibration characteristics evaluating apparatus |
| CN107588933A (en) * | 2017-08-24 | 2018-01-16 | 上海复光竞成科技有限公司 | Packaged type navigates by water intensity of illumination distribution test system and method for testing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20130707 |