CN112361917A - Installation and construction method of regenerative fan - Google Patents
Installation and construction method of regenerative fan Download PDFInfo
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- CN112361917A CN112361917A CN202011278562.4A CN202011278562A CN112361917A CN 112361917 A CN112361917 A CN 112361917A CN 202011278562 A CN202011278562 A CN 202011278562A CN 112361917 A CN112361917 A CN 112361917A
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 37
- 238000009434 installation Methods 0.000 title claims abstract description 35
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims description 6
- 230000009191 jumping Effects 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an installation and construction method of a regenerative fan, which comprises the following steps: respectively adjusting the height and the levelness of the fixed end bearing box based on the sectioning plane of the fixed end bearing box; adjusting the center distance between the non-fixed end bearing box and the fixed end bearing box, the levelness of the non-fixed end bearing box and the verticality between the end surface of the non-fixed end bearing box and the axial lead; hoisting the rotor set to the non-fixed end bearing box and the fixed end bearing box by adopting hoisting carrying poles; and measuring and adjusting the clearance between the rotor set and the side cover of the non-fixed end bearing box by adopting a clearance gauge, and measuring and adjusting the clearance between the rotor set and the side cover of the fixed end bearing box by adopting the clearance gauge. The invention adopts the comprehensive adjustment technology, so that the regenerative fan can normally run in a cold state and can not vibrate in a hot state, the occurrence of faults is greatly reduced, and the successful one-time test run can be realized.
Description
Technical Field
The invention relates to the technical field of metallurgical machinery, in particular to an installation and construction method of a regenerative fan.
Background
The regenerative fan is a key device of a pellet production line, and faults occur frequently in production, so that the normal production is greatly influenced.
The regenerative fan has the structural characteristics that: the structure is complicated, the rotational speed is high, each part assembly requires that the precision is high, produce vibration, must rationally assemble easily in the operation, if the installation is improper, hardly guarantee equipment normal operating, the construction degree of difficulty is very big, leads to backheat fan installation quality poor, the vibration is big, influences its life and pelletizing production line's normal production.
Disclosure of Invention
In view of the above, the invention provides an installation and construction method of a regenerative fan, and aims to solve the problem that the normal production of a pellet production line is influenced by the poor installation quality of the conventional regenerative fan.
The invention provides an installation and construction method of a regenerative fan, which comprises the following steps: a fixed end adjusting step, wherein the height and the levelness of the fixed end bearing box are respectively adjusted based on the sectioning plane of the fixed end bearing box so as to complete the position adjustment of the fixed end bearing box; a non-fixed end position adjusting step of adjusting the center distance between the non-fixed end bearing box and the fixed end bearing box, the levelness of the non-fixed end bearing box and the verticality between the end surface of the non-fixed end bearing box and the axis so as to complete the position adjustment of the non-fixed end bearing box; a rotor set positioning step, namely assembling and detecting the rotor set, and hoisting the rotor set to the non-fixed end bearing box and the fixed end bearing box by adopting hoisting carrying poles; and adjusting concentricity, namely measuring and adjusting the gap between the rotor set and the side cover of the non-fixed end bearing box by adopting a feeler gauge, and measuring and adjusting the gap between the rotor set and the side cover of the fixed end bearing box by adopting the feeler gauge until the requirement of the preset gap is met.
Further, the installation and construction method of the regenerative fan specifically includes the following steps of: and placing a frame type level meter or a phase combination level meter at 4 corners on a bisection plane of the fixed-section bearing box, and measuring and adjusting levelness of the fixed-section bearing box in the longitudinal direction and the transverse direction until the requirement of preset levelness is met.
Further, in the installation and construction method of the regenerative fan, the preset levelness is required to be less than 0.04mm/m in both the longitudinal levelness and the transverse levelness.
Further, in the installation and construction method of the regenerative fan, the adjusting of the center distance between the non-fixed end bearing box and the fixed end bearing box specifically includes: according to the center distance size between the non-fixed end bearing box and the fixed end bearing box, after the non-fixed end bearing box is preliminarily positioned, the rotor set is preliminarily positioned, and the sizes of gaps between the rotor set and the fixed end bearing box and between the non-fixed end bearing boxes are measured and adjusted.
Further, in the installation and construction method of the regenerative fan, the adjusting of the levelness between the unfixed end bearing box and the rotor set specifically includes: and preliminarily positioning the rotor set, and measuring and adjusting the levelness of the main shaft of the rotor set by using a level meter.
Further, according to the installation and construction method of the regenerative fan, if the shaft deflection of the main shaft is larger than the threshold value, a clearance gauge is arranged between the level gauge and the main shaft.
Further, in the installation and construction method of the regenerative fan, the adjustment of the concentricity between the non-fixed end bearing box and the fixed end bearing box specifically includes: the method comprises the steps of preliminarily positioning a rotor set, fixing a dial indicator on a main shaft of the rotor set, enabling a measuring head of the dial indicator to point to a machined end face of a non-fixed end bearing box, and observing the jump of the dial indicator by rotating the main shaft so as to detect whether the end face jump value of the machined end face meets the preset jump requirement or not.
Further, in the installation and construction method of the regenerative fan, the preset runout requirement is that the end runout value is less than or equal to 0.05 mm.
Further, in the installation and construction method of the regenerative fan, the preset gap is required to be that a gap error between the rotor set and four side covers of the non-fixed end bearing box is less than or equal to 0.1mm, and meanwhile, a gap error between the rotor set and four side covers of the fixed end bearing box is less than or equal to 0.1 mm.
Further, according to the installation and construction method of the regenerative fan, in the rotor set positioning step, the rotor set is assembled and detected before the rotor shaft is hoisted.
The installation and construction method of the regenerative fan provided by the invention comprises the steps of sequentially adjusting the positions of the fixed end bearing box and the non-fixed end bearing box, installing the rotor set in place after the adjustment is finished, finally detecting and adjusting the concentricity between the fixed end bearing box and the non-fixed end bearing box by utilizing the gaps of the fixed end bearing box and the non-fixed end bearing box, and adopting a comprehensive adjustment technology to ensure that the regenerative fan is normally operated after being installed, the vibration values in cold state and hot state reach the optimal state, namely the regenerative fan is normally operated in the cold state and does not vibrate in the hot state, thereby greatly reducing the occurrence of faults and realizing the success of one-time trial run. The method reduces the construction cost, improves the working efficiency, obtains good effect, improves the installation quality of the regenerative fan, reduces the vibration and prolongs the service life.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flow chart of a method for installing and constructing a regenerative fan according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the adjustment of the longitudinal and lateral levelness of the bearing housing according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram illustrating center distance adjustment between bearing housings according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of spindle levelness measurement according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a run-out measurement of a machined end face of a bearing housing according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of rotor set hoisting according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, it is a flow chart diagram of an installation and construction method of a regenerative fan according to an embodiment of the present invention. As shown, the method comprises the following steps:
and a fixed end adjusting step S1, adjusting the height and the levelness of the fixed end bearing box respectively based on the sectioning plane of the fixed end bearing box so as to complete the position adjustment of the fixed end bearing box.
Specifically, the height of the bisection plane in the bearing box can be measured by a precise optical level, and meanwhile, a frame type level meter or a phase combination level meter can be placed at 4 corners of the bisection plane in the bearing box at the fixed section, as shown in fig. 2, the levelness of the bearing box 1 at the fixed section in the longitudinal direction and the transverse direction is measured and adjusted until the requirement of the preset levelness is met, so that the position adjustment and the positioning of the bearing box 1 at the fixed end are completed; in the figure, Y is the longitudinal direction and X is the transverse direction. Wherein, the requirement of the preset levelness can be that the longitudinal levelness and the transverse levelness are both less than 0.04 mm/m. In fig. 1, a non-fixed end bearing housing 2 is provided on one side of a fixed end bearing housing 1, and a fan impeller 31 is provided between the fixed end bearing housing 1 and the non-fixed end bearing housing 2.
And a non-fixed end position adjusting step S2, adjusting the center distance between the non-fixed end bearing box and the fixed end bearing box, the levelness of the non-fixed end bearing box and the verticality between the end surface of the non-fixed end bearing box and the axis so as to complete the position adjustment of the non-fixed end bearing box.
Specifically, the height and the levelness of the non-fixed end bearing box are not only required to be adjusted, but also the center distance and the concentricity between the two bearing boxes, namely the fixed end bearing box and the non-fixed end bearing box, are required to be adjusted; for a fan with a sliding bearing, the accuracy of the span size of the main shaft, the specific position of the bearing in a bearing box and the size of a gap are very important, because the main shaft is involved in the dimensional space which needs to be ensured by expansion with heat and contraction with cold, and the adjustment needs to be comprehensively considered. Therefore, first, as shown in fig. 3, the center distance between the non-fixed end bearing box and the fixed end bearing box can be adjusted to meet the requirements of drawings; then, as shown in fig. 4, the levelness of the bearing box at the non-fixed end is adjusted, the levelness of the main shaft can be measured by adjusting the main shaft of the rotor set erected on the bearing box at the non-fixed end and the bearing box at the fixed end, and the levelness of the main shaft meets the requirement by adjusting the bearing box at the non-fixed end, and when the levelness of the main shaft meets the requirement, the levelness of the bearing box at the non-fixed end also meets the requirement because the main shaft is arranged on the bearing box at the non-fixed end and the bearing box at the fixed end and the levelness of the bearing box at the fixed end; finally, to make the fan normally used, the bearing has a long service life, and it is very important whether the two end surfaces of the bearing box along the axial direction are perpendicular to the axial line, for the sliding bearing: because the sliding bearing can be aligned, for the condition that the end face of the bearing box is not perpendicular to the axis, the non-perpendicularity of the end face of the bearing box can be absorbed and covered by the aligning roller in the bearing, if the non-perpendicularity is small, the service life of the bearing is not influenced, and if the non-perpendicularity is large, the service life of the bearing can be greatly shortened; as shown in fig. 5, the perpendicularity between the non-fixed end bearing housing and the main shaft can be measured by the main shaft to measure and adjust the perpendicularity between the end surface of the non-fixed end bearing housing and the axis line.
And S3, hoisting the rotor set to the non-fixed end bearing box and the fixed end bearing box by adopting a hoisting carrying pole.
Specifically, after the unfixed end bearing box and the fixed end bearing box are corrected, the rotor set is installed in place; after the rotor set is assembled and detected, a lifting device such as a lifting carrying pole is adopted to lift the rotor set to the non-fixed end bearing box and the fixed end bearing box; when the rotor set is hoisted, the steel wire rope is cut without tying the shaft neck, and soft objects are well padded at the hoisting part; when the rotor set is hoisted, the rotor set can not be obliquely hoisted; when the rotor set is lifted and falls, the operation should be slow, and the swing and the shake of the rotor are prevented. Before the rotor set is hoisted, the rotor set is assembled and detected.
And a concentricity adjusting step S4, wherein a clearance between the side covers of the rotor set and the non-fixed end bearing box is measured and adjusted by a feeler gauge, and a clearance between the side covers of the rotor set and the fixed end bearing box is measured and adjusted by the feeler gauge until the requirement of a preset clearance is met.
Specifically, the concentricity adjustment of the two bearing boxes cannot be realized by checking the gap between the main shaft and the bearing by using a feeler gauge, and because the bearing can be aligned, the non-concentricity of the two bearing boxes is compensated and covered by the alignment of the bearing, which is the advantage of the bearing, but if the requirement on the installation precision is lowered, the too large installation error is absorbed by the alignment of the bearing, and the service life of the bearing is shortened; the event needs to carry out the adjustment of concentricity between non-stiff end bearing box and the stiff end bearing box, and the mounting hole of non-stiff end bearing box and stiff end bearing box is worn to locate by the main shaft, and the concentricity of non-stiff end bearing box and stiff end bearing box is measured in the clearance between accessible main shaft and the mounting hole specifically includes: the clearance between the main shaft and the four side covers of the fixed end bearing box can be checked by adopting a feeler gauge, and comparison is carried out to ensure that the clearances between the main shaft and the four side covers of the fixed end bearing box are approximately equal, and the error allowance between the clearances is less than or equal to 0.1 mm; and a feeler gauge can be adopted to check the gaps between the main shaft and the four side covers of the non-fixed end bearing box, and comparison is carried out to ensure that the gaps between the main shaft and the four side covers of the non-fixed end bearing box are slightly equal, and the error between the gaps is less than or equal to 0.1 mm. Namely, the preset clearance is required to be that the clearance error between the rotor set and the four side covers of the non-fixed end bearing box is less than or equal to 0.1mm, and meanwhile, the clearance error between the rotor set and the four side covers of the fixed end bearing box is less than or equal to 0.1 mm.
In this embodiment, adjusting the center distance between the unfixed end bearing housing and the fixed end bearing housing specifically includes: according to the size of the center distance between the non-fixed end bearing box and the fixed end bearing box, after the non-fixed end bearing box is preliminarily positioned, the rotor set is preliminarily positioned, and the sizes of gaps among the rotor set, the fixed end bearing box and the non-fixed end bearing box are measured and adjusted. Specifically, according to the size of the center distance between the non-fixed end bearing box and the fixed end bearing box, after the non-fixed end bearing box is preliminarily positioned, the rotor group is preliminarily positioned, and the sizes of gaps between the rotor group and the fixed end bearing box and between the rotor group and the non-fixed end bearing box along the circumferential direction of the main shaft are measured and adjusted, as shown in fig. 3, the center distance between the non-fixed end bearing box and the fixed end bearing box can be measured by a steel tape, and the non-fixed end bearing box is adjusted, so that the center distance between the non-fixed end bearing box and the fixed end bearing box meets the drawing requirements, and the non-fixed end bearing box is preliminarily positioned; and then, preliminarily positioning the rotor set, measuring and adjusting the sizes of gaps between the rotor set and the fixed end bearing box and between the rotor set and the non-fixed end bearing box, namely measuring whether the sizes of the gaps between the rotor set and the fixed end bearing box meet the requirements of a general diagram or not, and measuring whether the sizes of the gaps between the non-fixed end bearing box meet the requirements of the general diagram or not, and if not, further comprehensively adjusting to achieve the optimal control precision so as to complete the adjustment of the center distance.
In this embodiment, the adjusting of the levelness between the unfixed end bearing housing and the rotor set specifically includes: and preliminarily positioning the rotor set, and measuring and adjusting the levelness of the main shaft of the rotor set by using a level meter. Specifically, the rotor set is initially positioned, and the levelness of the main shaft of the rotor set is measured and adjusted by using a level gauge, a frame-type level gauge with the precision of 0.02mm/m can be placed on the main shaft of the rotor set, as shown in fig. 4, the frame-type level gauge is placed at a position far away from an impeller as far as possible, meanwhile, due to the weight of the impeller and the main shaft, the main shaft must have a certain deflection, namely a slight bending, which is normal, and if the axial deflection of the main shaft is greater than a threshold value, a clearance gauge is filled between the level gauge and the main shaft; the threshold value may be determined according to actual conditions, and is not limited in this embodiment; when the levelness of the main shaft meets the requirement, the levelness of the non-fixed end bearing box also meets the requirement because the main shaft is arranged on the non-fixed end bearing box and the fixed end bearing box, and the levelness of the fixed end bearing box is adjusted.
In this embodiment, the adjustment of the concentricity between the non-fixed end bearing housing and the fixed end bearing housing specifically includes: the rotor set is preliminarily positioned, the dial indicator is fixed on a main shaft of the rotor set, a measuring head of the dial indicator points to a machined end face of the unfixed end bearing box, and the jitter of the dial indicator is observed by rotating the main shaft so as to detect whether an end face jitter value of the machined end face meets a preset jitter requirement. Specifically, as shown in fig. 5, the rotor set is initially positioned, the dial indicator is fixed on the spindle of the rotor set, a measuring head of the dial indicator points to the machined end face of the unfixed end bearing box, and the run-out of the dial indicator is observed by rotating the spindle to detect whether the end face run-out value of the machined end face meets the preset run-out requirement; when the main shaft is rotated, the main shaft can be rotated by 360 degrees, if the main shaft is not rotated, the main shaft can be rotated back and forth by more than 180 degrees; the preset run-out requirement can be that the end run-out value is less than or equal to 0.05 mm. In this embodiment, the rotor set includes an impeller and a main shaft.
In summary, according to the installation and construction method of the regenerative fan provided by this embodiment, the positions of the fixed end bearing box and the non-fixed end bearing box are sequentially adjusted, the rotor set is installed and positioned after the adjustment is completed, and finally the concentricity between the fixed end bearing box and the non-fixed end bearing box is detected and adjusted by using the gaps between the three parts. The method reduces the construction cost, improves the working efficiency, obtains good effect, improves the installation quality of the regenerative fan, reduces the vibration and prolongs the service life.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The installation and construction method of the regenerative fan is characterized by comprising the following steps:
a fixed end adjusting step, wherein the height and the levelness of the fixed end bearing box are respectively adjusted based on the sectioning plane of the fixed end bearing box so as to complete the position adjustment of the fixed end bearing box;
a non-fixed end position adjusting step of adjusting the center distance between the non-fixed end bearing box and the fixed end bearing box, the levelness of the non-fixed end bearing box and the verticality between the end surface of the non-fixed end bearing box and the axis so as to complete the position adjustment of the non-fixed end bearing box;
a rotor set is hoisted to the non-fixed end bearing box and the fixed end bearing box by adopting hoisting carrying poles;
and adjusting concentricity, namely measuring and adjusting the gap between the rotor set and the side cover of the non-fixed end bearing box by adopting a feeler gauge, and measuring and adjusting the gap between the rotor set and the side cover of the fixed end bearing box by adopting the feeler gauge until the requirement of the preset gap is met.
2. The installation and construction method of the regenerative fan according to claim 1, wherein the adjusting of the levelness of the bearing box at the fixed end specifically comprises:
and placing a frame type level meter or a phase combination level meter at 4 corners on a bisection plane of the fixed-section bearing box, and measuring and adjusting levelness of the fixed-section bearing box in the longitudinal direction and the transverse direction until the requirement of preset levelness is met.
3. The installation and construction method of the regenerative fan according to claim 2, wherein the preset levelness requirement is that both the longitudinal levelness and the transverse levelness are less than 0.04 mm/m.
4. The installation and construction method of the regenerative fan according to any one of claims 1 to 3, wherein the adjusting of the center distance between the non-fixed end bearing box and the fixed end bearing box specifically comprises:
according to the center distance size between the non-fixed end bearing box and the fixed end bearing box, after the non-fixed end bearing box is preliminarily positioned, the rotor set is preliminarily positioned, and the sizes of gaps between the rotor set and the fixed end bearing box and between the non-fixed end bearing boxes are measured and adjusted.
5. The installation and construction method of the regenerative fan according to any one of claims 1 to 3, wherein the adjusting of the levelness between the unfixed end bearing box and the rotor set specifically comprises:
and preliminarily positioning the rotor set, and measuring and adjusting the levelness of the main shaft of the rotor set by using a level meter.
6. The installation and construction method of the regenerative fan according to claim 5,
and if the shaft deflection of the main shaft is greater than the threshold value, a clearance gauge is arranged between the level gauge and the main shaft.
7. The installation and construction method of the regenerative fan according to any one of claims 1 to 3, wherein the adjustment of the concentricity between the non-fixed end bearing box and the fixed end bearing box specifically comprises:
the method comprises the steps of preliminarily positioning a rotor set, fixing a dial indicator on a main shaft of the rotor set, enabling a measuring head of the dial indicator to point to a machined end face of a non-fixed end bearing box, and observing the jump of the dial indicator by rotating the main shaft so as to detect whether the end face jump value of the machined end face meets the preset jump requirement or not.
8. The installation and construction method of the regenerative fan according to claim 5,
the preset jumping requirement is that the end face jumping value is less than or equal to 0.05 mm.
9. The installation and construction method of the regenerative fan according to any one of claims 1 to 3,
the preset gap requirement is that the gap error between the rotor set and the four side covers of the non-fixed end bearing box is less than or equal to 0.1mm, and simultaneously, the gap error between the rotor set and the four side covers of the fixed end bearing box is less than or equal to 0.1 mm.
10. The installation and construction method of the regenerative fan according to any one of claims 1 to 3,
and in the rotor set positioning step, before the rotor shaft is hoisted, assembling and detecting the rotor set.
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| CN202011278562.4A CN112361917A (en) | 2020-11-16 | 2020-11-16 | Installation and construction method of regenerative fan |
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| CN202011278562.4A CN112361917A (en) | 2020-11-16 | 2020-11-16 | Installation and construction method of regenerative fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379011A (en) * | 2023-03-29 | 2023-07-04 | 华能山东发电有限公司烟台发电厂 | Fan spindle installation method and device |
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Application publication date: 20210212 |