CN201155967Y - Magnetic force foundation for measuring vertical type units shafting line linearity - Google Patents
Magnetic force foundation for measuring vertical type units shafting line linearity Download PDFInfo
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- CN201155967Y CN201155967Y CNU2008200280591U CN200820028059U CN201155967Y CN 201155967 Y CN201155967 Y CN 201155967Y CN U2008200280591 U CNU2008200280591 U CN U2008200280591U CN 200820028059 U CN200820028059 U CN 200820028059U CN 201155967 Y CN201155967 Y CN 201155967Y
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Abstract
The utility model discloses a magnetic base for measuring the axis straightness of a vertical unit shafting, which comprises a main magnetizer; wherein, one face of the main magnetizer, which faces an unit shaft, is provided with a V-shaped groove opening; one face of the main magnetizer, which backs towards the unit shaft is parallelly separated from the contact face of an auxiliary magnetizer by a nonmagnetic spacer plate; the inner part of the combined body of the main magnetizer and the auxiliary magnetizer is provided with an opening along the direction that is parallel with the unit shaft; a magnet is arranged in the opening; an adjusting knob is fixed on one end of the magnet. The magnetic base can guarantee the fixedness of the corresponding positions of a CCD device and the shaft; the base can be tightly sucked on a water turbine shaft, the measurement as well as the normal work of the water turbine shaft is influenced, and thus the axis straightness detection and the measuring precision of the shafting and the requirements for the measuring points can be ensured.
Description
Technical field
The utility model belongs to field of measuring technique, relates to a kind of linearity measurer, is specifically related to a kind of magnetic force base that vertical shaft system of unit axis verticality is measured that is used for.
Background technology
In the Hydropower Unit installation process, to carry out the jiggering inspection, by jiggering can check the unit rotating part install back or overhaul intact after, whether the axis of unit rotating part is free vertical, check each rotatable parts throw of unit, concentricity, rotor clearance and unit axis verticality, the conventional jiggering inspection method of using monitors each rotating part throw in want sites measured with dial gauge exactly, when measuring the unit axis verticality, still use more traditional method, it is piano wire weight earphone mensuration, though these survey dish methods are simple, exist the manual work precision low, measuring process is lack of standardization, the deficiency of data-handling capacity difference.At present, traditional hydraulic turbine verticality measuring method can not satisfy the needs of high precision, automatic measurement, along with microelectric technique, photoelectric technology and technical development of computer, studies novel Hydropower Unit axis verticality detection method and necessitates.Use non-contacting static measurement method to solve hydropower unit axis now and detect the problem that exists, some progress have been obtained, this measuring method further is generalized to vertical unit, the linearity of large-size axis diameter detects, relatively has researching value, but at vertical unit, must install and fix the CCD device on the large-size axis diameter, could utilize the CCD Devices Characteristics, and in order to measure the linearity value of diverse location on the vertical unit diameter of axle, also need often to change the fixed installation position of CCD device, if adopt the point of fixity mounting means of traditional perforating boring, not only method is inflexible, inconvenience is moved, and data point is limited, and influences the bulk strength of vertical unit axle, therefore study a kind of mounting means flexibly, just very necessary.
Summary of the invention
The purpose of this utility model provides a kind of magnetic force base that vertical shaft system of unit axis verticality is measured that is used for, it is inflexible to have solved the CCD device mount pad fixing means that exists in the prior art, move inconvenience, data point is limited, and influences the problem of vertical unit axle intensity.
The technical scheme that the utility model adopted is, a kind of magnetic force base that is used for vertical shaft system of unit axis verticality measurement, it is characterized in that: comprise leading magnet, the one side towards the unit axle of leading magnet has the V-shaped groove opening, the one side of the axle of unit dorsad of leading magnet and the surface of contact of secondary magnetic conductor are with non-magnetic dividing plate parallel spaced apart, in the assembly inside of leading magnet and secondary magnetic conductor along the direction opening of parallel unit axle, be provided with magnet in the opening, this magnet is divided into the N-S utmost point along diametric(al), is fixed with the adjustment knob at an end of magnet.
Dividing plate is selected copper coin for use.
V-shaped groove opening angle a is 150 °.
Magnet is selected for use cylindrical.
The beneficial effects of the utility model are, and are easy for installation, and random conversion installation site can not influence the intensity of vertical unit axle again, guaranteed the precision that vertical shaft system of unit axis verticality is measured and the requirement of position.
Description of drawings
Fig. 1 is the organigram of the utility model embodiment;
Fig. 2 a be embodiment of the present utility model be used for the axle be the installation site synoptic diagram of axis verticality pick-up unit; The layout synoptic diagram of four vertical lines 4 of four direction when Fig. 2 b is actual measurement.
Among the figure, 1, rotating shaft, 2, leading magnet, 3, magnet, 4, vertical line, 5, dividing plate, 6, rotary shaft rack, 7, weight, 8, oil tube, 9, the CCD device, 10, the magnetic force base, 11, secondary magnetic conductor, 12, adjust knob, 13, the V-shaped groove opening.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The utility model is to be used for vertical shaft system of unit axis verticality to detect and measurement mechanism.The hydraulic generator unit is general to adopt upright mode to arrange that its body critical piece comprises rotating shaft, generator amature, rotary wheel of water turbine, guide bearing and thrust bearing.Axle system is the important component part of hydraulic generator unit, and its kinematic behavior quality is directly connected to whole unit operation reliability, life-span and economic target, therefore in time detects with data analysis significant to Large Hydroelectric Set.The generator of unit, the hydraulic turbine and macro-axis are separately to make, will just can be linked to be an integral body in the erecting stage, this accuracy requirement to axis is tight especially, according to national standard, the deviation of throw requires at 0.19～0.35mm, i.e. the deviation of two hairline to 3 hairline diameters.
As shown in Figure 1, organigram for the utility model embodiment, comprise leading magnet 2, the one side towards the unit axle of leading magnet 2 has V-shaped groove opening 13, V-shaped groove opening 13 angles are a, the one side of the axle of unit dorsad of leading magnet 2 and the surface of contact of secondary magnetic conductor 11 are with non-magnetic copper coin 5 parallel spaced apart, in the assembly inside of leading magnet 2 and secondary magnetic conductor 11 along the direction opening of parallel unit axle, be provided with a rotatable cylindrical magnet 3 in the opening, this cylindrical magnet 3 is divided into the N-S utmost point along diametric(al), is fixed with at an end of cylindrical magnet 3 and adjusts knob 12.
Because the turbine shaft diameter is bigger, so 13 150 ° of the selections of V-shaped groove opening are proper, the V-shaped groove size is referring to the machinery industry standard JB/T 9162.2-1999 of the People's Republic of China (PRC).
The utility model in use, twist and adjust 3 rotations of knob 12 drive magnets, when the surface of contact position of vertical leading magnet 2 and secondary magnetic conductor 11 is arrived in rotary magnet N-S utmost point separatrix, because the partition effect of copper coin 5, the magnetic line of force forms closed circuit respectively in leading magnet 2 and secondary magnetic conductor 11, and the utility model integral body can be taken away easily; With magnet 3 again behind the half-twist, state as shown in fig. 1, the N-S utmost point is respectively facing to two magnetic conductors, this moment from the N utmost point to leading magnet 2 to turbine shaft 1 to secondary magnetic conductor 11 to the S utmost points, formation magnetic line of force closure, can CCD device 9 be installed on the measurement end face of secondary magnetic conductor 11 again with the utility model magnetic force base firmly attached on the turbine shaft.After the measurement installation site relative fixed of the utility model and vertical line 4, CCD device 9, after utilizing the projection of light to vertical line 4, the hot spot signal of 9 pairs of acceptance of CCD device is exported, through signal processing circuit and relevant calculating, just can carry out the axle of water wheels unit in this position is that axis verticality detects and surveying work.When needing the measuring position of conversion magnetic force base, will adjust knob 12 half-twists again after, can take off the utility model integral body easily, be installed to new measuring position.
Shown in Fig. 2 a,, use for reference piano wire earphone method, 10 installation site among the utility model such as the figure for the utility model is used for the installation site synoptic diagram that axle is axis verticality detection and measurement mechanism.Shown in Fig. 2 b, during actual measurement, four vertical line 4 tops of four direction need be fastened on the rotary shaft rack 6 that hangs over water wheels unit axle 1, and will guarantee that vertical line is suspended on the positive X of the hydraulic turbine, Y direction.The lower end of vertical line 4 hangs up weight 7, and weight 7 places oil tube 8 the insides, when measuring, has slight vibration also can not influence measurement result in the middle of the vertical line like this, guarantees the verticality of vertical line, thereby has guaranteed measuring accuracy.
In sum, the utility model has guaranteed that the CCD device is constant with the relative position of axle, this base can be adsorbed on the turbine shaft closely, neither can influence measurement, also can not influence the operate as normal of turbine shaft, thereby guarantee to axle to be that axis verticality detects and the precision of measurement and the requirement of measurement point.
Claims (4)
1, a kind of magnetic force base that is used for vertical shaft system of unit axis verticality measurement, it is characterized in that: comprise leading magnet (2), the one side towards the unit axle of leading magnet (2) has V-shaped groove opening (13), the one side of the axle of unit dorsad of leading magnet (2) and the surface of contact of secondary magnetic conductor (11) are with non-magnetic dividing plate (5) parallel spaced apart, in the assembly inside of leading magnet (2) and secondary magnetic conductor (11) along the direction opening of parallel unit axle, be provided with magnet (3) in the opening, this magnet (3) is divided into the N-S utmost point along diametric(al), is fixed with at an end of magnet (3) and adjusts knob (12).
2, magnetic force base according to claim 1 is characterized in that: described dividing plate (5) is selected copper coin for use.
3, magnetic force base according to claim 1 is characterized in that: described V-shaped groove opening (13) angle a is 150 °.
4, magnetic force base according to claim 1 is characterized in that: described magnet (3) is selected for use cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200280591U CN201155967Y (en) | 2008-01-08 | 2008-01-08 | Magnetic force foundation for measuring vertical type units shafting line linearity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200280591U CN201155967Y (en) | 2008-01-08 | 2008-01-08 | Magnetic force foundation for measuring vertical type units shafting line linearity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155967Y true CN201155967Y (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200280591U Expired - Fee Related CN201155967Y (en) | 2008-01-08 | 2008-01-08 | Magnetic force foundation for measuring vertical type units shafting line linearity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155967Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848781A (en) * | 2015-04-03 | 2015-08-19 | 中国南方电网有限责任公司调峰调频发电公司 | Continuous pump storage unit axis measuring and adjusting method |
| WO2017063279A1 (en) * | 2015-10-16 | 2017-04-20 | 南通大学 | Funnel stand with magnetic base for super clean bench |
-
2008
- 2008-01-08 CN CNU2008200280591U patent/CN201155967Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848781A (en) * | 2015-04-03 | 2015-08-19 | 中国南方电网有限责任公司调峰调频发电公司 | Continuous pump storage unit axis measuring and adjusting method |
| CN104848781B (en) * | 2015-04-03 | 2017-04-19 | 中国南方电网有限责任公司调峰调频发电公司 | Continuous pump storage unit axis measuring and adjusting method |
| WO2017063279A1 (en) * | 2015-10-16 | 2017-04-20 | 南通大学 | Funnel stand with magnetic base for super clean bench |
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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: 20081126 Termination date: 20110108 |