CN114367930A - Rotary machine stator casing partition plate alignment system and method based on molybdenum wires - Google Patents
Rotary machine stator casing partition plate alignment system and method based on molybdenum wires Download PDFInfo
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- CN114367930A CN114367930A CN202111623008.XA CN202111623008A CN114367930A CN 114367930 A CN114367930 A CN 114367930A CN 202111623008 A CN202111623008 A CN 202111623008A CN 114367930 A CN114367930 A CN 114367930A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The application provides a rotating machinery stator casing partition plate alignment system and a method based on molybdenum wires, wherein the system comprises the molybdenum wires, two molybdenum wire adjusting devices, two pendants, a signal receiver and a conductive measuring device; the two adjusting devices are arranged on the molybdenum wires and used for supporting the molybdenum wires and adjusting the positions of the effective molybdenum wires; the effective molybdenum wire is a molybdenum wire between the two adjusting devices; the two pendants are respectively connected to two ends of the molybdenum wire, are suspended in the air and straighten the molybdenum wire by utilizing the gravity of the pendants; the signal receiver is connected to two ends of the molybdenum wire through wires and used for judging whether the electric signals are communicated or not. The system firstly aligns the axes of the bearing areas at two sides through the molybdenum wire after deflection compensation, then aligns the stator casing partition plate through the molybdenum wire after deflection compensation, simplifies the alignment steps tediously, completes the operation of aligning the bearing areas at two sides of the stator casing efficiently and accurately, and has strong high efficiency and practicability.
Description
Technical Field
The application relates to the technical field of rotary machinery, in particular to a rotary machinery stator casing partition plate alignment system and method based on molybdenum wires.
Background
The rotating machine is a machine which mainly depends on rotation to complete specific functions, and typical rotating machines comprise a steam turbine, a gas turbine, a centrifugal and axial flow compressor, a fan, a pump, a water turbine, a generator, an aircraft engine and the like, and are widely applied to departments of electric power, petrifaction, metallurgy, aerospace and the like.
The installation alignment of a stator component in a rotary machine is a key process in the rotary machine, and the alignment precision of the stator component directly influences the stable operation, vibration indexes, efficiency and the like of a unit. When the rotating and stator components in the rotating machinery are poorly aligned, the rotating and stator components can be scraped, the vibration of a compressor can be caused, and even the frequent vehicle jumping can be caused, so that unnecessary cost increase is caused to a user. Especially for the centrifugal compressor industry, the alignment precision influences the service life of the unit due to higher equipment rotating speed.
The traditional alignment technology relies on alignment dummy shafts and dummy tile tools, although the alignment precision can be ensured, the alignment technology has the disadvantages of high cost, poor reusability and the like, and meanwhile, in order to prevent the influence on the precision, the deformation-preventing storage requirement of the tools is relatively high, so that the alignment technology brings great management cost for manufacturers or users; the method of aligning the stator parts, for example with a laser tracker, involves high costs due to lack of versatility.
Disclosure of Invention
The application provides a rotating machinery stator shell partition plate alignment system and method based on molybdenum wires, and aims to solve the problems that in the prior art, operation difficulty is too large and consumed time is too long when bearing areas on two sides of a stator shell partition plate in a large rotating machinery are aligned.
In a first aspect, the present application provides a molybdenum wire-based rotating machine stator case spacer alignment system, comprising: the method comprises the following steps: the device comprises a molybdenum wire, two molybdenum wire adjusting devices, two pendants, a signal receiver and a conductive measuring device;
the two adjusting devices are arranged on the molybdenum wires and used for supporting the molybdenum wires and adjusting the positions of the effective molybdenum wires; the effective molybdenum wire is a molybdenum wire between the two adjusting devices;
the two pendants are respectively connected to two ends of the molybdenum wire, are suspended in the air and straighten the molybdenum wire by utilizing the gravity of the pendants;
the signal receiver is connected to two ends of the molybdenum wire through wires and used for judging whether the electric signals are communicated or not.
Preferably, the electrically conductive measuring device is a micrometer.
Preferably, the pendant is a lead pendant.
In a second aspect, the present application provides a method for aligning a partition plate of a stator casing of a rotary machine based on molybdenum wires, comprising the following steps:
s10, dividing the effective molybdenum wire into several sections equally in horizontal direction, and using the end point of each section as the calibration point; measuring the deflection value of each calibration point to be used as the deflection value of the molybdenum wire of the calibration point;
s20, mounting bearing areas on two sides of the stator shell of the rotating machinery; the stator shell comprises bearing areas on two sides and a stator shell partition plate;
s30, aligning the axes of the bearing areas at two sides of the connecting line formed by the two end points of the effective molybdenum wire;
s40, mounting the stator casing between the bearing areas on the two sides, and aligning and coinciding the center of the cross section of the partition plate of the stator casing with the horizontal center of the effective molybdenum wire;
s50, measuring the distance between each calibration point and the partition board of the stator casing as the measurement height of the calibration point; the measured height of the calibration point and the deflection value of the molybdenum wire of the calibration point are taken as the theoretical height;
measuring the distance from each calibration point to a stator casing clapboard, wherein a measurement starting point end and a measurement terminal point end of the conductive measurement device are respectively connected with a molybdenum wire on the vertical section of the calibration point and the stator casing clapboard, judging whether the conductive measurement device is successfully connected or not through a signal receiver, and if the conductive measurement device is successfully connected, the signal receiver receives an electric connection signal; if the signal receiver fails to receive the electric connection signal;
and S60, adjusting the position of the stator shell partition plate to enable the theoretical height to be coincident with the axial height of the stator shell partition plate.
According to the technical scheme, the application provides a rotating machinery stator casing partition plate alignment system and method based on molybdenum wires, and the system comprises the molybdenum wires, two molybdenum wire adjusting devices, two pendants, a signal receiver and a conductive measuring device; the two adjusting devices are arranged on the molybdenum wires and used for supporting the molybdenum wires and adjusting the positions of the effective molybdenum wires; the effective molybdenum wire is a molybdenum wire between the two adjusting devices; the two pendants are respectively connected to two ends of the molybdenum wire, are suspended in the air and straighten the molybdenum wire by utilizing the gravity of the pendants; the signal receiver is connected to two ends of the molybdenum wire through wires and used for judging whether the electric signals are communicated or not. The axis of bearing district in both sides is aligned earlier to molybdenum filament after this system passes through the amount of deflection compensation, then with the molybdenum filament alignment stator casing baffle after the amount of deflection compensation, has simplified loaded down with trivial details ground alignment step, can accomplish the operation of stator casing alignment both sides bearing district high-efficiently and accurately, has high efficiency and practicality.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
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 description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic diagram illustrating a stator casing partition and two side bearing areas in a rotating machine according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a molybdenum wire based partition alignment system for a stator casing of a rotary machine according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of a method for aligning a partition plate of a stator casing of a rotary machine based on molybdenum wires according to an embodiment of the present disclosure;
fig. 4 is an illustration of the deflection value and the height in the method for aligning the partition plate of the stator casing of the rotary machine based on the molybdenum wire according to the embodiment of the present disclosure;
fig. 5 is a diagram illustrating alignment points and heights in a method for aligning a partition plate of a stator casing of a rotary machine based on molybdenum wires according to an embodiment of the present disclosure;
FIG. 6 is a diagram illustrating an application of a method for aligning a partition plate of a stator casing of a rotary machine based on molybdenum wires according to an embodiment of the present disclosure;
in the figure, 1-molybdenum wire, 2-molybdenum wire adjusting device, 3-pendant, 4-signal receiver and 5-conductive measuring device.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Referring to fig. 1, a schematic diagram of the positions of a stator casing partition and two side bearing areas in a conventional rotary machine is shown. In the prior art, the problem of complex operation exists in the process of aligning the bearing areas on the two sides of the stator shell partition plate in the large-scale rotating machinery all the time, the application provides a molybdenum wire-based rotating machinery stator shell partition plate aligning system and a molybdenum wire-based rotating machinery stator shell partition plate aligning method, the axis of the bearing areas on the two sides is firstly aligned by using a molybdenum wire 1 after deflection compensation, then the stator shell partition plate is aligned by using the molybdenum wire 1 after deflection compensation, the complex aligning steps are simplified, and the operation of aligning the bearing areas on the two sides of the stator shell can be efficiently and accurately completed.
Referring to fig. 2, the present application provides a molybdenum wire based rotating machine stator case diaphragm alignment system comprising: the device comprises a molybdenum wire 1, two molybdenum wire adjusting devices 2, two pendants 3, a signal receiver 4 and a conductive measuring device 5.
The molybdenum wire 1 is the core of the present application, and the molybdenum wire 1 is used as an alignment auxiliary component. The molybdenum wire 1 can be made of common molybdenum wire 1 materials obtained by machining, so that the use requirement can be met, and the molybdenum wire 1 has conductivity and can form a complete current path with other parts of the whole system.
The two molybdenum wire adjusting devices 2 are arranged on the molybdenum wires 1 and used for supporting the molybdenum wires 1 and adjusting the positions of the effective molybdenum wires; the effective molybdenum wire is a molybdenum wire 1 between two molybdenum wire adjusting devices 2.
The two falling objects 3 are respectively connected to two ends of the molybdenum wire 1, the falling objects 3 are suspended in the air, and the molybdenum wire 1 is straightened by the gravity of the falling objects 3. It should be noted that the drop 3 should not be too heavy to cause too much deformation. The drop 3 can be a conventional lead drop.
The signal receiver 4 is connected to two ends of the molybdenum wire 1 through wires and used for judging whether the electric signals are communicated or not.
The electrically conductive measuring device 5 is suitable for measuring. The conductive measuring device 5 needs to have conductivity because the accuracy requirement is high during measurement, and whether the measurement starting end and the measurement ending end are completely closed cannot be accurately observed. When the system is completely closed, the system and the partition plate of the stator shell form a complete passage, and a signal receiver 4 receives an electric signal of the passage; when there is no full contact, the signal receiver 4 receives no electrical signal and the process of measurement is adjusted again.
It should be noted that, in a general common machine, the conductive measuring device 5 may be a micrometer. The measurement requirements can be met by a common micrometer.
In addition, referring to fig. 3, the present application provides a method for aligning a partition plate of a stator of a rotary machine based on molybdenum wires, comprising:
s10, dividing the effective molybdenum wire into several sections equally in horizontal direction, and using the end point of each section as the calibration point; and measuring the deflection value of each calibration point to be used as the deflection value of the molybdenum wire of the calibration point.
This step is to obtain the deflection value of the effective molybdenum wire, which is a curved line due to gravity. In the application, the effective molybdenum wire is used as a straight line to align the bearing area of the stator, and then the effective molybdenum wire is used as a reference to align the partition plate of the stator shell. Referring to fig. 4, the effective molybdenum wire as the alignment in the present application is a theoretical molybdenum wire in the figure, and the theoretical molybdenum wire is a straight line which does not consider the existence of deflection, namely, a connection line of two end points of the effective molybdenum wire, but not an actual molybdenum wire. In order to obtain the theoretical molybdenum wire, a deflection value Hx is introduced as height compensation of the actual molybdenum wire.
S20, mounting bearing areas on two sides of the stator shell of the rotating machinery; the stator housing includes bearing areas on both sides and a stator housing partition.
Because the two side bearing areas are matched, after the two side bearing areas are installed, the axes of the two side bearing areas are completely overlapped to form a uniform axis.
And S30, aligning the axis of the bearing areas at two sides of the connecting line formed by the two end points of the effective molybdenum wire.
It should be noted that the two end points of the effective molybdenum wire, i.e. the theoretical molybdenum wire, are placed on the axes of the bearing areas on both sides, i.e. the theoretical axes are used to align the axes of the bearing areas on both sides.
And S40, installing the stator casing between the bearing areas on the two sides, and aligning the horizontal center of the section of the partition plate of the stator casing and the horizontal center of the effective molybdenum wire to coincide.
S50, measuring the distance between each calibration point and the partition board of the stator casing as the measurement height of the calibration point; the measured height of the calibration point and the deflection value of the molybdenum wire of the calibration point are taken as the theoretical height; measuring the distance from each calibration point to a stator casing clapboard, wherein a measurement starting point end and a measurement terminal point end of a conductive measurement device 5 are respectively connected with a molybdenum wire 1 on the vertical section of the calibration point and the stator casing clapboard, judging whether the conductive measurement device 5 is successfully connected or not through a signal receiver 4, and if the conductive measurement device 5 is successfully connected, the signal receiver 4 receives an electrical connection signal; if not successful, the signal receiver 4 does not receive the electrical connection signal.
In this step, the deflection value of the molybdenum wire 1 is compensated at a plurality of calibration points of the actual molybdenum wire, so as to obtain the theoretical molybdenum wire.
And S60, adjusting the position of the stator shell partition plate to enable the theoretical height to be coincident with the axial height of the stator shell partition plate.
The effective molybdenum wire after compensating the deflection value is taken as a base for adjusting the stator casing partition plate.
One specific embodiment is that first, knowing about the separation of the two bearing zones on both sides, about six meters, the effective molybdenum wire length in this system is set to eight meters, slightly longer than the length of the stator casing partition; then, the eight meters are equally divided into eight parts at an interval of one meter, and nine calibration points are obtained. The heights of the middle seven calibration points were measured, see fig. 5, as H1, H2, H3, H4, H5, H6, and H7, as specified in the following table:
then, bearing areas on both sides of the stator casing of the rotary machine are installed.
And aligning the axis of the bearing areas at two sides of a connecting line formed by two end points of the effective molybdenum wire. The two end points are the molybdenum wire 1 supporting points of the molybdenum wire adjusting device 2, namely the intersection points of the horizontal direction and the vertical direction of the molybdenum wire 1.
And installing the stator casing between the bearing areas on the two sides, and aligning and coinciding the horizontal center of the section of the partition plate of the stator casing and the horizontal center of the effective molybdenum wire.
In this embodiment, referring to fig. 6, the electrically conductive measuring device 5 is a micrometer. And judging whether the micrometer is completely connected with the molybdenum wire 1 and the stator casing partition plate by a measuring starting point end and a measuring end point end through a signal receiver, measuring the height from the molybdenum wire 1 corresponding to seven calibration points in the middle to the stator casing partition plate, and then compensating the deflection value of the molybdenum wire by the seven calibration points to be used as the theoretical height. The relevant data are as follows:
and finally, adjusting the position of the partition plate of the stator shell by taking the theoretical height as a reference.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (4)
1. A rotary machine stator enclosure baffle alignment system based on molybdenum wires, comprising: the device comprises a molybdenum wire (1), two molybdenum wire adjusting devices (2), two pendants (3), a signal receiver (4) and a conductive measuring device (5);
two of the adjusting devices are arranged on the molybdenum wire (1) and used for supporting the molybdenum wire (1) and adjusting the position of the effective molybdenum wire; the effective molybdenum wire is a molybdenum wire (1) between the two molybdenum wire adjusting devices (2);
the two pendants (3) are respectively connected to two ends of the molybdenum wire (1), the pendants (3) are suspended in the air, and the molybdenum wire (1) is straightened by utilizing the gravity of the pendants (3);
the signal receiver (4) is connected to two ends of the molybdenum wire (1) through electric wires and used for judging whether the electric signals are communicated or not.
2. Molybdenum wire based rotating machine stator casing diaphragm alignment system according to claim 1, characterized in that the electrically conductive measuring device (5) is a micrometer.
3. Molybdenum-wire-based rotating machine stator casing diaphragm alignment system according to claim 1, characterized in that the drop (3) is a lead drop.
4. A method for aligning a molybdenum wire based partition of a stator casing of a rotary machine for use in the system of any one of claims 1 to 3, comprising:
s10, dividing the effective molybdenum wire into several sections equally in horizontal direction, and using the end point of each section as the calibration point; measuring the deflection value of each calibration point to be used as the deflection value of the molybdenum wire of the calibration point;
s20, mounting bearing areas on two sides of the stator shell of the rotating machinery; the stator shell comprises bearing areas on two sides and a stator shell partition plate;
s30, aligning the axes of the bearing areas at two sides of the connecting line formed by the two end points of the effective molybdenum wire;
s40, mounting the stator casing between the bearing areas on the two sides, and aligning and coinciding the center of the cross section of the partition plate of the stator casing with the horizontal center of the effective molybdenum wire;
s50, measuring the distance between each calibration point and the partition board of the stator casing as the measurement height of the calibration point; adding the deflection value of the molybdenum wire of the calibration point to the measurement height of the calibration point to be used as a theoretical height;
measuring the distance from each calibration point to a stator casing partition plate, wherein a measurement starting point end and a measurement terminal point end of a conductive measurement device (5) are respectively connected with a molybdenum wire (1) on the vertical section of the calibration point and the stator casing partition plate, judging whether the conductive measurement device (5) is successfully connected through a signal receiver (4), and if the conductive measurement device is successfully connected, the signal receiver (4) receives an electric connection signal; if the signals are unsuccessful, the signal receiver (4) cannot receive the electric connection signals;
and S60, adjusting the position of the stator shell partition plate to enable the theoretical height to be coincident with the axial height of the stator shell partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623008.XA CN114367930A (en) | 2021-12-28 | 2021-12-28 | Rotary machine stator casing partition plate alignment system and method based on molybdenum wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623008.XA CN114367930A (en) | 2021-12-28 | 2021-12-28 | Rotary machine stator casing partition plate alignment system and method based on molybdenum wires |
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| CN114367930A true CN114367930A (en) | 2022-04-19 |
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| CN202111623008.XA Pending CN114367930A (en) | 2021-12-28 | 2021-12-28 | Rotary machine stator casing partition plate alignment system and method based on molybdenum wires |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002010681A1 (en) * | 2000-08-01 | 2002-02-07 | Mirko Essling | Measuring device and measuring method for determining distance and/or position |
| CN202701754U (en) * | 2012-07-21 | 2013-01-30 | 山东电力建设第二工程公司 | Shell installation center line aligning device for turbine |
| CN105403131A (en) * | 2015-12-11 | 2016-03-16 | 东方电气集团东方汽轮机有限公司 | Upper half and lower half flow passage separate centering method for rotation machinery |
| CN208488232U (en) * | 2018-05-15 | 2019-02-12 | 沈阳透平机械股份有限公司 | A kind of alignment device that the casing suitable for wind tunnel compressor assembles |
| CN209615253U (en) * | 2018-12-22 | 2019-11-12 | 渤海造船厂集团有限公司 | A kind of centering measuring device |
-
2021
- 2021-12-28 CN CN202111623008.XA patent/CN114367930A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002010681A1 (en) * | 2000-08-01 | 2002-02-07 | Mirko Essling | Measuring device and measuring method for determining distance and/or position |
| CN202701754U (en) * | 2012-07-21 | 2013-01-30 | 山东电力建设第二工程公司 | Shell installation center line aligning device for turbine |
| CN105403131A (en) * | 2015-12-11 | 2016-03-16 | 东方电气集团东方汽轮机有限公司 | Upper half and lower half flow passage separate centering method for rotation machinery |
| CN208488232U (en) * | 2018-05-15 | 2019-02-12 | 沈阳透平机械股份有限公司 | A kind of alignment device that the casing suitable for wind tunnel compressor assembles |
| CN209615253U (en) * | 2018-12-22 | 2019-11-12 | 渤海造船厂集团有限公司 | A kind of centering measuring device |
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