CN107389004B - Acousto-optic measuring instrument for central shaft installation of hydroelectric generating set and measuring method thereof - Google Patents
Acousto-optic measuring instrument for central shaft installation of hydroelectric generating set and measuring method thereof Download PDFInfo
- Publication number
- CN107389004B CN107389004B CN201710701605.7A CN201710701605A CN107389004B CN 107389004 B CN107389004 B CN 107389004B CN 201710701605 A CN201710701605 A CN 201710701605A CN 107389004 B CN107389004 B CN 107389004B
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- China
- Prior art keywords
- hollow rod
- metal
- central shaft
- acousto
- measuring instrument
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes
Abstract
The invention discloses an acousto-optic measuring instrument for installing a central shaft of a hydroelectric generating set and a measuring method thereof, wherein the acousto-optic measuring instrument comprises: the first hollow rod is provided with a through hole on the rod wall; the battery is arranged in the first hollow rod, and one electrode of the battery is electrically connected with the first hollow rod; a buzzer, which is arranged in the first hollow rod and is close to the through hole of the first hollow rod, wherein one electrode of the buzzer is electrically communicated with the other electrode of the battery; one end of the insulating hollow rod is connected with one end of the first hollow rod; one end of the second hollow rod is connected with the other end of the insulating hollow rod, the second hollow rod is insulated from the first hollow rod in a circuit, and the second hollow rod is electrically communicated with the other electrode of the buzzer; a micrometer micro-cylinder, the shell of which is connected with the second hollow rod and is electrically communicated with the second hollow rod; and one end of the micrometer butt-joint rod is connected with and electrically communicated with the other end of the first hollow rod. The invention has the advantages of high measurement precision, convenient use and high working efficiency.
Description
Technical Field
The invention relates to an acousto-optic measuring instrument for installing a central shaft of a hydroelectric generating set and a measuring method thereof, belongs to the field of detection, and particularly relates to a measuring instrument for precisely detecting heavy components such as concentricity of the hydroelectric generating set, stator assembly, coaxiality of a main shaft and the like of a hydroelectric generating set which is power equipment of a hydropower station
Background
In the current water turbine equipment manufacturing and power station field assembly, because the detection object is larger, the detection equipment is limited, the installation accuracy requirement is high, when coaxiality and concentricity are measured, a hanging conical weight is added to serve as a standard through a hanging wire, then a reference object is found through measurement, and construction is carried out according to the reference object. Because the accuracy of measurement is difficult to control, the accuracy of the position of the reference object is not high, and the installation accuracy is affected.
Disclosure of Invention
According to the defects, the invention provides an acousto-optic measuring instrument for installing a central shaft of a hydroelectric generating set and a measuring method thereof. An installation accuracy of 0.01mm can be obtained by the measuring instrument.
The technical scheme of the invention is as follows:
an acousto-optic measuring instrument for installing a central shaft of a hydroelectric generating set, comprising:
the first hollow rod is provided with a through hole on the rod wall;
the battery is arranged in the first hollow rod, and one electrode of the battery is electrically connected with the first hollow rod;
the buzzer is arranged in the first hollow rod and is close to the through hole of the first hollow rod, sound of the buzzer can be sent out from the through hole, and one electrode of the buzzer is electrically communicated with the other electrode of the battery;
one end of the insulating hollow rod is connected with one end of the first hollow rod;
one end of the second hollow rod is connected with the other end of the insulating hollow rod, the second hollow rod is insulated from the first hollow rod in a circuit, and the second hollow rod is electrically communicated with the other electrode of the buzzer;
the shell of the micrometer micro-cylinder is connected with the second hollow rod and is electrically communicated with the second hollow rod, and the measuring head of the micrometer micro-cylinder is suspended;
one end of the micrometer butt-joint rod is connected with and electrically communicated with the other end of the first hollow rod, and the other end of the micrometer butt-joint rod is suspended;
when the first hollow rod and the second hollow rod are communicated through an external wire, the buzzer is electrified to sound.
It should be noted that, because the central axis of the hydroelectric generating set has a large or small size, the micrometer butt-joint rod can adopt different lengths according to different sizes, the micrometer micro-tube mainly has high-precision measurement and is convenient to adjust, and obviously, the precision of the micrometer micro-tube is the precision of the measurement of the invention.
In order to work in a noise environment, the novel LED lamp also comprises an LED lamp, wherein the LED lamp is installed in the first hollow rod and is close to a through hole of the first hollow rod, the through hole can be used for observing the LED lamp, and the LED lamp is connected with the buzzer in series. Through sound and light, and simultaneously has the prompting function.
For convenient replacement, the second hollow rod is connected with the micrometer micro-cylinder through threads.
The first hollow rod is connected with the micrometer butt-joint rod through threads.
Preferably, the LED lamp further comprises a long fixed jackscrew, one end of the long fixed jackscrew is electrically connected with the second hollow rod, and the other end of the long fixed jackscrew is electrically connected with the LED lamp.
The battery is characterized by further comprising a short fixed jackscrew, one end of the short fixed jackscrew is electrically connected with the battery, and the other end of the short fixed jackscrew is electrically connected with the first hollow rod.
The invention also discloses a measuring method of the acousto-optic measuring instrument for the central shaft installation of the hydroelectric generating set, which comprises the acousto-optic measuring instrument for the central shaft installation of the hydroelectric generating set, and is characterized by comprising the following steps:
step A, hoisting a metal wire above the center position of a central shaft of a hydroelectric generating set to be installed, and hanging a conical weight below the metal wire;
step B, taking the conical weight as the center, drawing an arc line, and arranging a plurality of metal reference objects on the arc line;
step C, electrically connecting the metal reference object with the metal wire through a lead;
step D, horizontally placing two ends of the acousto-optic measuring instrument between the metal reference object and the metal wire;
step E, measuring the distance between the metal reference object and the metal wire by adjusting the micrometer micro cylinder, and finally moving the position of the metal reference object, wherein when the acousto-optic measuring instrument just meets the requirements of emitting sound and light, the length of the acousto-optic measuring instrument is the length between the metal reference object and the metal wire;
step F, enabling the distances from the plurality of metal references to the metal wires to be equal, so that the center line below the central shaft of the hydroelectric generating set can be determined through the plurality of metal references;
step G, determining a plurality of metal references above a central shaft of the hydroelectric generating set by the same method;
and step H, dismantling the metal wire, and fixing a metal reference object which can be used for the installation standard of the central shaft of the hydroelectric generating set.
Preferably, the plurality of metal references have a circular arc shape, and the circular arc concave surfaces are aligned with the metal lines.
Preferably, the metal reference is provided with four or more.
Preferably, the metal wire is a piano wire.
The invention has the advantages of simple structure, low cost, high measurement precision, convenient use and high working efficiency.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings:
as shown, an acousto-optic meter for central shaft installation of a hydro-generator set, comprising:
a first hollow rod 11, the wall of which is provided with a through hole 6;
a battery 3 mounted in the first hollow rod 11, one electrode of the battery 3 being electrically connected to the first hollow rod 11; the battery 3 can be a rechargeable battery;
a buzzer 4 mounted in the first hollow bar 11 and close to the through hole 6 of the first hollow bar 11, sound of the buzzer 4 being able to be sent out from the through hole, one electrode of the buzzer 4 being in electrical communication with the other electrode of the battery 3; the buzzer 4 can be a commercially available active buzzer;
an insulating hollow rod 7, one end of which is coupled to one end of the first hollow rod 11;
a second hollow rod 12, one end of which is connected with the other end of the insulating hollow rod 7, the second hollow rod 12 is electrically insulated from the first hollow rod 11, and the second hollow rod 12 is electrically communicated with the other electrode of the buzzer 4;
a micrometer micro-cylinder 81, the housing of which is connected and electrically connected with the second hollow rod 12, the measuring head of the micrometer micro-cylinder 81 is suspended;
one end of the micrometer butt-joint rod 82 is connected with and electrically communicated with the other end of the first hollow rod 11, and the other end of the micrometer butt-joint rod is suspended;
when the first hollow rod 11 and the second hollow rod 12 are communicated through an external wire, the buzzer 3 is electrified to sound.
The LED lamp (5) is arranged in the first hollow rod (11) and is close to the through hole (6) of the first hollow rod (11), the through hole (6) can be used for observing the LED lamp (5), and the LED lamp (5) is connected with the buzzer (4) in series.
The second hollow rod 12 is screwed with the micrometer micro-cylinder 81.
The first hollow rod 11 is screwed with the micrometer docking rod 82.
The LED lamp also comprises a long fixed jackscrew 22, one end of the long fixed jackscrew 22 is electrically connected with the second hollow rod 12, and the other end of the long fixed jackscrew 22 is electrically connected with the LED lamp 5.
And the battery 3 is further provided with a short fixed jackscrew 21, one end of the short fixed jackscrew 21 is electrically connected with the battery 3, and the other end of the short fixed jackscrew 21 is electrically connected with the first hollow rod 11.
The micrometer micro-cylinder can be used with the precision of 0.01mm, the measuring range is 25mm, the clockwise rotation of the rotating cylinder is increased, the anticlockwise rotation is decreased, and the reading change of each rotation is 0.01mm. Measurement mode of micro-cartridge: according to the principle of spiral motion, when the micro-cylinder (also called a movable scale cylinder) rotates once, the micrometer screw advances or retreats by one pitch of 0.5 mm. Thus, when the micro-cylinder rotates one division, it rotates 1/50 of a circle, and the screw moves 1/50×0.5 mm=0.01 mm along the axis, so that a value of 0.01mm can be accurately read using the micrometer.
The measuring method of the acousto-optic measuring instrument for installing the central shaft of the water turbine generator set comprises the following steps of:
step A, hoisting a metal wire above the center position of a central shaft of a hydroelectric generating set to be installed, and hanging a conical weight below the metal wire;
step B, taking the conical weight as the center, drawing an arc line, and arranging a plurality of metal reference objects on the arc line;
step C, electrically connecting the metal reference object with the metal wire through a lead;
step D, horizontally placing two ends of the acousto-optic measuring instrument between the metal reference object and the metal wire;
step E, measuring the distance between the metal reference object and the metal wire by adjusting the micrometer micro cylinder, and finally moving the position of the metal reference object, wherein when the acousto-optic measuring instrument just meets the requirements of emitting sound and light, the length of the acousto-optic measuring instrument is the length between the metal reference object and the metal wire;
step F, enabling the distances from the plurality of metal references to the metal wires to be equal, so that the center line below the central shaft of the hydroelectric generating set can be determined through the plurality of metal references;
step G, determining a plurality of metal references above a central shaft of the hydroelectric generating set by the same method;
and step H, dismantling the metal wire, and fixing a metal reference object which can be used for the installation standard of the central shaft of the hydroelectric generating set.
The shape of the plurality of metal references is arc-shaped, and the arc concave surfaces are aligned with the metal wires.
The metal reference object is provided with more than four.
The metal wire is a piano wire.
Claims (10)
1. An acousto-optic measuring instrument for installing a central shaft of a hydroelectric generating set, comprising:
the first hollow rod is provided with a through hole on the rod wall;
the battery is arranged in the first hollow rod, and one electrode of the battery is electrically connected with the first hollow rod;
the buzzer is arranged in the first hollow rod and is close to the through hole of the first hollow rod, sound of the buzzer can be sent out from the through hole, and one electrode of the buzzer is electrically communicated with the other electrode of the battery;
one end of the insulating hollow rod is connected with one end of the first hollow rod;
one end of the second hollow rod is connected with the other end of the insulating hollow rod, the second hollow rod is insulated from the first hollow rod in a circuit, and the second hollow rod is electrically communicated with the other electrode of the buzzer;
the shell of the micrometer micro-cylinder is connected with the second hollow rod and is electrically communicated with the second hollow rod, and the measuring head of the micrometer micro-cylinder is suspended;
one end of the micrometer butt-joint rod is connected with and electrically communicated with the other end of the first hollow rod, and the other end of the micrometer butt-joint rod is suspended;
when the first hollow rod and the second hollow rod are communicated through an external wire, the buzzer is electrified to sound;
the measuring method of the acousto-optic measuring instrument comprises the following steps:
step A, hoisting a metal wire above the center position of a central shaft of a hydroelectric generating set to be installed, and hanging a conical weight below the metal wire;
step B, taking the conical weight as the center, drawing an arc line, and arranging a plurality of metal reference objects on the arc line;
step C, electrically connecting the metal reference object with the metal wire through a lead;
step D, horizontally placing two ends of the acousto-optic measuring instrument between the metal reference object and the metal wire;
step E, measuring the distance between the metal reference object and the metal wire by adjusting the micrometer micro cylinder, and finally moving the position of the metal reference object, wherein when the acousto-optic measuring instrument just meets the requirements of emitting sound and light, the length of the acousto-optic measuring instrument is the length between the metal reference object and the metal wire;
step F, enabling the distances from the plurality of metal references to the metal wires to be equal, so that the center line below the central shaft of the hydroelectric generating set can be determined through the plurality of metal references;
step G, determining a plurality of metal references above a central shaft of the hydroelectric generating set by the same method;
and step H, dismantling the metal wire, and fixing a metal reference object which can be used for the installation standard of the central shaft of the hydroelectric generating set.
2. An acousto-optic measuring apparatus for a central shaft mounting of a hydro-generator set according to claim 1 further comprising an LED lamp mounted within and adjacent to a through hole in said first hollow shaft for viewing the LED lamp, the LED lamp being in series with said buzzer.
3. An acousto-optic meter for central shaft installation of a hydro-generator set according to claim 1 wherein said second hollow rod is threadably coupled to said micrometer micro-cylinder.
4. An acousto-optic meter for central shaft installation of a hydro-generator set as defined in claim 1 wherein said first hollow rod is threadably coupled to a micrometer docking rod.
5. The acousto-optic measuring instrument for central shaft installation of a hydro-generator set according to claim 2, further comprising a long fixed jackscrew, one end of the long fixed jackscrew being electrically connected to the second hollow rod, the other end of the long fixed jackscrew being electrically connected to the LED lamp.
6. The acousto-optic gauge for central shaft installation of a hydro-generator set according to claim 1, further comprising a short fixed jackscrew having one end electrically connected to said battery and the other end electrically connected to said first hollow rod.
7. A measuring method of an acousto-optic measuring instrument for central shaft installation of a hydro-generator set, comprising the acousto-optic measuring instrument for central shaft installation of a hydro-generator set according to any one of claims 1 to 6, characterized by comprising the steps of:
step A, hoisting a metal wire above the center position of a central shaft of a hydroelectric generating set to be installed, and hanging a conical weight below the metal wire;
step B, taking the conical weight as the center, drawing an arc line, and arranging a plurality of metal reference objects on the arc line;
step C, electrically connecting the metal reference object with the metal wire through a lead;
step D, horizontally placing two ends of the acousto-optic measuring instrument between the metal reference object and the metal wire;
step E, measuring the distance between the metal reference object and the metal wire by adjusting the micrometer micro cylinder, and finally moving the position of the metal reference object, wherein when the acousto-optic measuring instrument just meets the requirements of emitting sound and light, the length of the acousto-optic measuring instrument is the length between the metal reference object and the metal wire;
step F, enabling the distances from the plurality of metal references to the metal wires to be equal, so that the center line below the central shaft of the hydroelectric generating set can be determined through the plurality of metal references;
step G, determining a plurality of metal references above a central shaft of the hydroelectric generating set by the same method;
and step H, dismantling the metal wire, and fixing a metal reference object which can be used for the installation standard of the central shaft of the hydroelectric generating set.
8. The method of claim 7, wherein the plurality of metal references have a circular arc shape, and the concave surface of the circular arc is aligned with the metal wire.
9. The method for measuring the sound and light of the central shaft of the hydroelectric generating set according to claim 8, wherein the metal reference is provided with more than four.
10. The method of claim 8, wherein the wire is a piano wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701605.7A CN107389004B (en) | 2017-08-16 | 2017-08-16 | Acousto-optic measuring instrument for central shaft installation of hydroelectric generating set and measuring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710701605.7A CN107389004B (en) | 2017-08-16 | 2017-08-16 | Acousto-optic measuring instrument for central shaft installation of hydroelectric generating set and measuring method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107389004A CN107389004A (en) | 2017-11-24 |
| CN107389004B true CN107389004B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710701605.7A Active CN107389004B (en) | 2017-08-16 | 2017-08-16 | Acousto-optic measuring instrument for central shaft installation of hydroelectric generating set and measuring method thereof |
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2017
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