CN211576071U - Mechanical electrical runout measuring device and measuring system for revolving body - Google Patents
Mechanical electrical runout measuring device and measuring system for revolving body Download PDFInfo
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- CN211576071U CN211576071U CN202020655103.2U CN202020655103U CN211576071U CN 211576071 U CN211576071 U CN 211576071U CN 202020655103 U CN202020655103 U CN 202020655103U CN 211576071 U CN211576071 U CN 211576071U
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- eddy current
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Abstract
The utility model relates to an accurate measurement field in place particularly, relates to a solid of revolution machinery electricity measuring device and measurement system. The mechanical electrical runout measuring device of the revolving body comprises an electrical eddy current sensor, a positioning frame and a host; the eddy current sensor is arranged on the positioning frame, and the positioning frame is used for adjusting the distance between the eddy current sensor and the measured target surface of the revolving body to be measured; the eddy current sensor is in communication connection with the host through a cable. The electric eddy current sensor, the cable and the signal amplifier of the mechanical electric jump quantity measuring device of the revolving body are separated type combination matching instruments, can be assembled and disassembled through specific combination, flexibly change the measuring strategy and facilitate different working condition field use. The mounting position of the eddy current sensor is not limited, the eddy current sensor is suitable for measuring various large and small rotors, and the distance between the eddy current sensor and the to-be-measured revolving body can be conveniently adjusted by arranging the positioning frame capable of adjusting the measuring position of the eddy current sensor.
Description
Technical Field
The utility model relates to an accurate measurement field in place particularly, relates to a solid of revolution machinery electricity measuring device and measurement system.
Background
The comprehensive runout of the rotor of the rotary machine is the sum of the mechanical runout and the electrical runout of the rotor, the mechanical runout reflects the machining error of parts, and the electrical runout represents the nonuniformity of the electromagnetic properties of materials of precision revolving parts (such as turbines, generators, internal combustion engines, machine tool spindles and other large rotors). Under the condition of low rotating speed of a large-scale rotating machine, the vibration of a rotor is very small and can be ignored, the vibration measured by a sensor is caused by the defects of a shaft measuring point and is generally called mechanical deviation and electrical deviation, and the vibration amplitude measured by the sensor under the condition of low speed is called mechanical-electrical jumping quantity or comprehensive jumping quantity.
The vibration fault is a main expression form of the fault of the rotary machine, the comprehensive bounce quantity influences the vibration and the operation reliability of the rotary machine, and the vibration and the operation reliability are an important evaluation index of the machining quality of a mechanical rotor, so that the vibration or displacement detection of a main shaft of the rotary machine is of great significance. In order to find out the material and processing defects of the mechanical rotor in time and avoid the repair of the machine set after assembly, it is necessary to immediately perform mechanical and electrical jump quantity comprehensive test on the rotor after the rotor is processed.
At present, in-situ measurement of large-scale shaft parts on processing and assembling sites is difficult to install and adjust due to the limitation of structures and installation spaces; the transposition method has the problems of complex operation, long measurement period, harmonic suppression and the like in the implementation process, so that at present, no mature and effective portable instrument exists for in-place measurement of the comprehensive jumping quantity of the rotor of the rotary machine.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solid of revolution machinery electricity measuring device and measurement system that jumps, can not receive mounted position's limitation, nimble adjustment signal circuit distance is fit for all kinds of big small-size rotor and measures.
The application provides a mechanical electrical runout measuring device of a revolving body, which comprises an eddy current sensor, a positioning frame and a host;
the eddy current sensor is arranged on the positioning frame, and the positioning frame is used for adjusting the distance between the eddy current sensor and the measured target surface of the revolving body to be measured; the eddy current sensor is in communication connection with the host through a cable.
In the above technical solution, preferably, the positioning frame includes a clamping member, and the clamping member is used for clamping the eddy current sensor.
In any of the above technical solutions, preferably, the positioning frame further includes a height adjusting member, and the height adjusting member is used for adjusting the height of the clamping member.
In any of the above technical solutions, preferably, the host includes a signal amplifier and a digital display meter;
the eddy current sensor is electrically connected with the signal amplifier through the cable, and the signal amplifier is electrically connected with the digital display meter through the cable.
In any one of the above technical solutions, preferably, the host further includes a display screen electrically connected to the digital display meter, and the display screen is configured to display data of the digital display meter.
In any of the above technical solutions, preferably, the host further includes a power line, a protection circuit, and a power switch;
the power line is electrically connected with the power switch through the protection circuit and is used for being communicated with a power supply and supplying power to the digital display meter.
In any of the above technical solutions, preferably, the host further includes a host key and a plurality of control keys respectively electrically connected to the digital display meter, where the plurality of control keys include a reset key, a clear key, and a measurement mode adjustment key.
In any of the above technical solutions, preferably, the host further includes a shielding case; and/or
The host machine also comprises a handle; and/or
The host computer still includes the supporting legs.
In any one of the above technical solutions, preferably, the device for measuring mechanical electrical runout of a rotating body further includes a rotating body bracket for supporting the rotating body to be measured.
The application also provides a measuring system which comprises the revolving body mechanical electrical runout measuring device.
Compared with the prior art, the beneficial effects of this application are:
the utility model provides a solid of revolution machinery electricity measuring device that jumps includes supporting eddy current sensor, cable and the signal amplifier of disconnect-type combination, through specific combination dismouting, can change the measurement strategy in a flexible way, makes things convenient for different operating mode field usages. The mounting position of the eddy current sensor is not limited, the eddy current sensor is suitable for measuring various large and small rotors, and the distance between the eddy current sensor and the revolving body to be measured can be conveniently adjusted by arranging the positioning frame capable of adjusting the measuring position of the eddy current sensor. The measuring host is small and exquisite, light and convenient to carry, has improved instrument availability factor, and shows that the precision is high, and the display mode can be according to the use custom and adjust.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a rotor mechanical electrical runout measuring device according to an embodiment of the present invention.
Reference numerals:
the method comprises the following steps of 1-a host, 2-a digital display meter, 3-a signal amplifier, 4-a host key, 5-a display screen, 6-a power switch, 7-a protection circuit, 8-a power line, 9-a cable, 10-an eddy current sensor, 11-a positioning frame, 12-a clamping component and 13-a measured rotor.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A rotary mechanical electrical runout measuring device and measuring system according to some embodiments of the present invention are described below with reference to fig. 1.
Referring to fig. 1, the present application provides a mechanical electrical runout measuring device for a revolving body, which includes an eddy current sensor 10, a positioning frame 11 and a main machine 1, and is used for measuring the mechanical electrical runout of the revolving body. The structure and the operation principle of the mechanical-electrical run-out measuring device of the rotor according to the present embodiment will be specifically described below by taking the rotor as an example.
The rotor 13 under test can be mounted on a high precision load-bearing carriage or machine tool at the factory site.
Referring to fig. 1, an eddy current sensor 10 is mounted on a spacer 11 and fixed to the outside of the rotor together with the spacer 11. The probe of the eddy current sensor 10 is arranged close to the measured rotor 13 and is perpendicular to the measured target surface of the measured rotor 13 as much as possible, so that the stability and accuracy of measuring the gap between the eddy current sensor 10 and the measured target surface in the measuring process are ensured. During the slow rotation of the measured rotor 13, the eddy current sensor 10 can measure the distance between the measured rotor 13 and the measured target surface, and transmit the distance signal to the main machine 1 through the cable 9.
Alternatively, eddy current sensor 10 has a linear range of 80mils (2mm) with a precision of 200mV/mil in the linear range.
Referring to fig. 1, the positioning frame 11 is used to fix the eddy current sensor 10, and the positioning frame 11 can adjust the mounting position and mounting height of the eddy current sensor 10 thereon to adjust the position of the eddy current sensor 10 relative to the target surface to be measured, so that the eddy current sensor 10 is within the measurement linearity range. Specifically, the positioning frame 11 includes a clamping member 12 and a height adjusting member (not shown in the figure), wherein the clamping member 12 is used for horizontally clamping the eddy current sensor 10 so as to enable the detection probe of the eddy current sensor 10 to be close to the target surface to be detected. Preferably, the clamping member 12 may be a retaining splint. The height adjusting component is used for adjusting the height of the clamping component 12, and further adjusting the height of the eddy current sensor 10, so that the position of the detection probe of the eddy current sensor 10 relative to the target surface to be detected is adjusted through the matching of the clamping component 12 and the height adjusting component. Preferably, the height adjustment member may be a telescopic rod or a lifting platform.
Referring to fig. 1, the host 1 includes a signal amplifier 3, a digital display table 2, a display screen 5, a power line 8, a protection circuit 7, and a power switch 6. The eddy current sensor 10 is connected with the signal amplifier 3 through the cable 9 in a communication way, so that the distance signal detected by the eddy current sensor 10 is transmitted to the signal amplifier 3. The signal amplifier 3 converts the distance signal into a voltage signal, and transmits the voltage signal to the digital display table 2 and the display screen 5, and the display screen 5 is used for displaying the voltage value and the distance value so as to obtain the mechanical and electrical jump information of the measured rotor 13 through the voltage value and the distance value and further determine the defect part of the rotor. The power line 8 is used for connecting an external power supply to supply power to the display screen 5, the digital display meter 2 and the signal amplifier 3. The power line 8 is electrically connected with the power switch 6 through the protection circuit 7, the protection circuit 7 is used for providing power protection for the whole machine, and the power switch 6 is used for controlling the electrification of the whole machine.
Specifically, the main body 1 has an outer shape of about 85 × 205 × 200mm (height × width × depth), and is formed of a plurality of aluminum alloy plates forming a shield case, and has good shielding performance. The digital display table 2, the signal amplifier 3 and the protection circuit 7 are disposed in the host 1. The host key 4, the display screen 5 and the power switch 6 are disposed on the outer surface of the shield case of the host 1. The shielding shell is also provided with a handle and supporting legs, and the supporting legs can be movable supporting pieces with movable wheels so as to be convenient to carry, move and use.
The host 1 supplies power through a power line 8, the voltage of the power supply is (165V-264V) AC, the frequency is (47-63) Hz, and the power consumption of the whole machine is less than or equal to 25W. The device for measuring the mechanical electrical jump of the revolving body in the embodiment supplies power to the signal amplifier 3 through the digital display table 2, simplifies the whole circuit and does not need to provide different voltage modes of the host 1, the signal amplifier 3 and the eddy current sensor 10.
The digital display table 2 is an editable high-precision digital display table, and is responsible for processing the direct-current voltage signal transmitted by the signal amplifier 3 and providing power for the signal amplifier 3. The numerical display table 2 shows that the measuring range is +/-0-19.999 Vdc, the resolution is 1mV, the voltage input impedance is ≧ 2M Ω, and the maximum allowable input is 120% of the measuring range.
In addition, the host 1 further includes a plurality of control keys respectively electrically connected to the digital display table 2, and the plurality of control keys include a reset key, a clear key, and a measurement mode adjustment key, and are used for selecting the measurement mode of the digital display table 2 and performing reset and clear operations of the display data. The high-precision digital display customizable measurement mode content can be edited, and the setting of instrument passwords, the setting of upper and lower limit alarms, the setting of decimal points, the setting of 10 calibration points with the maximum measurement range, the setting of customized display values, the setting of communication address labels and the like can be included.
When the device is used, the power switch 6 and the host key 4 are turned on, then the eddy current sensor 10 performs measurement, and the display screen 5 can display the gap voltage or the corresponding gap distance between the probe measured by the eddy current sensor 10 and the measured target surface of the measured rotor 13. The position of the eddy current sensor 10 is adjusted by the positioning frame 11 to adjust the gap voltage or the gap distance, and the zero clearing can be performed after the data is acquired. According to different use habits, different display modes can be selected: under the voltage display mode, the resolution is 1mV, which is equivalent to the vibration amplitude of 0.127 μm according to conversion; in the amplitude display mode, the minimum display value is 0.1 μm.
The eddy current sensor 10, the cable 9 and the signal amplifier 3 of the mechanical electrical runout measuring device of the revolving body of the embodiment are separate type combined matching instruments, and can be assembled and disassembled through specific combination, so that the measuring strategy can be flexibly changed, for example, the measuring distance between the mechanical electrical runout measuring device of the revolving body of the embodiment and the measured rotor 13, the protection grade of the combined matching instrument and the like can be realized, and the mechanical electrical runout measuring device of the revolving body of the embodiment can be conveniently used in different working condition fields. And the installation position of the eddy current sensor 10 is not limited, and the eddy current sensor is suitable for measuring various large and small rotors. The measurement host 1 is small and portable, is convenient to carry, improves the use efficiency of the instrument, has high display precision, and can be adjusted according to the use habit.
In addition, the mechanical electrical runout measuring device for the rotator of the embodiment further comprises a rotator bracket (not shown in the figure) for supporting the rotator to be measured so as to measure the rotator to be measured. The revolving body bracket is provided with a supporting component which is used for being rotationally connected with a rotating shaft of the revolving body to be tested so as to enable the revolving body to be tested to be placed in the revolving body bracket in a rotating mode.
The embodiment further provides a measuring system, which comprises the revolving body mechanical-electrical-bounce measuring device of the embodiment, and has all the beneficial effects of the revolving body mechanical-electrical-bounce measuring device, and the description is omitted here.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A mechanical electrical runout measuring device of a revolving body is characterized by comprising an eddy current sensor, a positioning frame and a host;
the eddy current sensor is arranged on the positioning frame, and the positioning frame is used for adjusting the distance between the eddy current sensor and the measured target surface of the revolving body to be measured; the eddy current sensor is in communication connection with the host through a cable.
2. A rotary body mechanical electrical runout measuring device according to claim 1, wherein said spacer includes a holding member for holding said eddy current sensor.
3. A rotary body mechanical electrical runout measuring device according to claim 2, wherein said spacer further comprises a height adjusting member for adjusting the height of said holding member.
4. A rotary body mechanical electrical runout measuring device according to claim 1, wherein said main machine includes a signal amplifier and a digital display meter;
the eddy current sensor is electrically connected with the signal amplifier through the cable, and the signal amplifier is electrically connected with the digital display meter through the cable.
5. The mechanical electrical jump measuring device of the revolving body of claim 4, wherein said host further comprises a display screen electrically connected to said digital display meter, said display screen displaying data of said digital display meter.
6. The electrical runout measuring device of a revolving body machine according to claim 4, wherein said main machine further comprises a power supply line, a protection circuit and a power switch;
the power line is electrically connected with the power switch through the protection circuit and is used for being communicated with a power supply and supplying power to the digital display meter.
7. The mechanical electrical jump measuring device of the revolving body of claim 4, wherein said host further comprises a host key and a plurality of control keys electrically connected to said digital display meter, respectively, said plurality of control keys comprising a reset key, a clear key and a measuring mode adjusting key.
8. A rotary body mechanical electrical trip measurement apparatus according to any one of claims 1 to 7, wherein said main body further comprises a shield case; and/or
The host machine also comprises a handle; and/or
The host computer still includes the supporting legs.
9. The mechanical electrical runout measuring device for the revolving body of claim 1, further comprising a revolving body support for supporting the revolving body to be measured.
10. A measuring system comprising a rotary body mechanical electrical runout measuring device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655103.2U CN211576071U (en) | 2020-04-26 | 2020-04-26 | Mechanical electrical runout measuring device and measuring system for revolving body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655103.2U CN211576071U (en) | 2020-04-26 | 2020-04-26 | Mechanical electrical runout measuring device and measuring system for revolving body |
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| Publication Number | Publication Date |
|---|---|
| CN211576071U true CN211576071U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020655103.2U Active CN211576071U (en) | 2020-04-26 | 2020-04-26 | Mechanical electrical runout measuring device and measuring system for revolving body |
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| Country | Link |
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| CN (1) | CN211576071U (en) |
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2020
- 2020-04-26 CN CN202020655103.2U patent/CN211576071U/en active Active
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Address after: 310022 Building 1, No. 608, Kangxin Road, Linping District, Hangzhou, Zhejiang Patentee after: Hangzhou Turbine Power Group Co.,Ltd. Address before: 357 Shiqiao Road, Xiacheng District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU STEAM TURBINE Co.,Ltd. |