CN114233689A - Alignment method for horizontally split large-scale compressor shell and partition plate - Google Patents
Alignment method for horizontally split large-scale compressor shell and partition plate Download PDFInfo
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- CN114233689A CN114233689A CN202111560093.XA CN202111560093A CN114233689A CN 114233689 A CN114233689 A CN 114233689A CN 202111560093 A CN202111560093 A CN 202111560093A CN 114233689 A CN114233689 A CN 114233689A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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Abstract
The invention discloses an alignment method for a horizontally split large-scale compressor shell and a partition plate, which comprises the following steps: s1, installing a partition board and a first end cover on the machine shell; s2, hoisting the dummy shaft to a preassembly position; s3, mounting a second end cover on the shell, and adjusting the dummy shaft at the pre-mounting position to a target position; s4, measuring the concentricity of the clapboard and the dummy shaft; s5, removing the false shaft; s6, detaching the clapboard, and grinding the clapboard according to the measurement result of the step S4; s7, mounting the polished partition plate; and S8, hoisting the dummy shaft to the target position again, and repeating the steps S4 to S7 to align the partition plate and the dummy shaft concentrically. The dummy shaft can be independently disassembled and assembled in the alignment process of the partition plate, so that the disassembly of the end cover is avoided, and the alignment efficiency of the partition plate is improved.
Description
Technical Field
The invention relates to the field of compressors, in particular to an alignment method for horizontally subdividing a large compressor shell and a partition plate.
Background
In order to solve the problems of deformation, staggered opening and the like of shaft end sealing caused by an upper half structure and a lower half structure when a traditional large horizontal split machine shell faces high pressure, a sealing area of the shaft end of a traditional horizontal split machine shell unit is adjusted to be a full-circle structure through a small end cover structure, and a machine unit-M + B machine unit with a new structure is formed. The structure is mainly applied to an ethylene compressor set.
Although the type of unit combines the characteristics of convenient MCL disassembly and inspection and high BCL pressure-bearing capacity, the structure of integrating the bearing area and the end cover brings great difficulty for assembly work. The shielding of the end caps from the bearing area has led to the recent popularity of laser trackers, which cannot be used because the light source cannot cover the bearing area and the spacer at the same time. The traditional method for assembling the dummy shaft and the end cover simultaneously greatly increases the workload, and although the alignment quality can be ensured, the alignment efficiency cannot be ensured.
Through consulting a large amount of data, know that the baffle of large-scale unit often passes through with the casing alignment: three methods of optical instrument, steel wire and false shaft. The optical instrument cannot be used due to the structural characteristics of the M + B type unit, and the steel wire cannot meet the high-precision alignment requirement of the partition plate and the shell of the centrifugal compressor due to the existence of physical property deflection. The dummy shaft has the problem of low efficiency in the alignment process of the M + B type unit. In summary, the dummy shaft is still the best solution for aligning the separator of the M + B centrifugal compressor, but the problem of low efficiency is to be solved.
Disclosure of Invention
In view of the above, the present invention provides an alignment method for horizontally splitting a large compressor casing and a partition plate.
Specifically, the method comprises the following technical scheme:
an alignment method for horizontally splitting a large compressor shell and a partition plate comprises the following steps:
s1, installing a partition board and a first end cover on the machine shell;
s2, hoisting the dummy shaft to a preassembly position;
s3, mounting a second end cover on the shell, and adjusting the dummy shaft at the pre-mounting position to a target position;
s4, measuring the concentricity of the clapboard and the dummy shaft;
s5, removing the false shaft;
s6, detaching the clapboard, and grinding the clapboard according to the measurement result of the step S4;
s7, mounting the polished partition plate;
and S8, hoisting the dummy shaft to the target position again, and repeating the steps S4 to S7 to align the partition plate and the dummy shaft concentrically.
Further, after the first end cover is installed in the step S1, a first supporting member is disposed in the first end cover, and a second supporting member is disposed on at least one of the partition boards;
the dummy shaft of the pre-installed position in the step S2 is placed on the first support and the second support.
Further, the first supporting piece is arranged in the sealing cavity of the first end cover, and the top surface of the first supporting piece and the top surface of the second supporting piece are in the same plane.
Further, after the second end cap is installed in the step S3, a third supporting member is disposed in the second end cap;
the dummy shaft of the target position is disposed on the first support and the third support.
Further, the third supporting piece is arranged in a sealing cavity of the second end cover, the second end cover and the first end cover are coaxially arranged, and the top surface of the third supporting piece and the top surface of the first supporting piece are in the same plane.
Further, removing the second support after the dummy shaft is in the target position.
Further, the step S5 includes the steps of:
s51, moving the dummy shaft towards the first end cover until the first end of the dummy shaft is pulled out of the second end cover;
s52, lifting the first end of the dummy shaft to the outside of the machine shell step by step to enable the dummy shaft to be in an inclined state;
and S53, moving the false shaft in the inclined state out of the shell.
Further, the step S8 includes the steps of:
s81, horizontally hoisting the dummy shaft to the upper part of the shell, and adjusting the dummy shaft to be in an inclined state;
s82, sending the second end of the dummy shaft in the inclined state into the first end cover until the wall surface of the dummy shaft (14) is attached to the wall surface of the first end cover (20), and reducing the height of the first end of the dummy shaft until the dummy shaft is adjusted to be in a horizontal state;
s83, traversing the dummy shaft in the horizontal state to the direction of the second end cover until the dummy shaft is at the target position.
Further, the inclined included angle between the axis of the dummy shaft and the axis of the housing in the inclined state has a maximum value and a minimum value.
Further, the step of obtaining the maximum value and the minimum value of the inclination angle includes:
traversing the pseudo shaft at the target position in the direction of the first end cover until the first end positioned in the second end cover is separated from the second end cover, and the end face of the first end is tightly attached to the end face of the second end cover;
the first end is lifted, and when the extension line of the lower wall surface of the first end is attached to the highest point of the second end cover, the minimum value of the inclined included angle is obtained;
and continuously raising the first end, and obtaining the maximum value of the inclined included angle when the upper wall surface of the dummy shaft positioned in the first end cover is attached to the wall surface of the first end cover.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least: in the method for aligning the partition plate by using the dummy shaft, the dummy shaft and the end cover can be independently hoisted. The dummy shaft can be independently disassembled and assembled in the alignment process of the partition plate, the disassembly of the end cover is avoided, and the efficiency of partition plate alignment is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a target position of a dummy shaft according to the present invention;
FIG. 2 is a schematic view of a false tile installation position structure according to the present invention;
FIG. 3 is a schematic view of the first step of installing the dummy shaft according to the present invention;
FIG. 4 is a schematic view of a dummy shaft removing step according to the present invention;
FIG. 5 is a schematic structural diagram of the present invention when the tilt angle of the dummy axis is the minimum;
FIG. 6 is a schematic structural diagram of the present invention when the tilt angle of the imaginary axis is the maximum.
The reference numerals in the figures are denoted respectively by:
11-a first support; 12-a third support; 13-a second support; 14-a false shaft; 20-a first end cap; 21-a second end cap; 30-a housing; 40-a separator.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Before further details of the embodiments of the present invention are described, terms of orientation such as "upper", "lower", and "side" in the embodiments of the present invention are based on the orientation shown in fig. 1.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, the present embodiment describes an alignment method for horizontally splitting a large compressor casing and a partition, and as shown in fig. 3, the method includes the following steps:
s1, mounting the partition plate 40 and the first end cap 20 on the housing 30;
s2, hoisting the dummy shaft 14 to a preassembly position (shown in FIG. 3 b);
s3, mounting the second end cap 21 on the housing 30 (as shown in fig. 3 c), and adjusting the dummy shaft 14 in the pre-assembly position to the target position (as shown in fig. 3 d);
s4, measuring the concentricity of the partition plate 40 and the dummy shaft 14;
s5, removing the dummy shaft 14;
s6, detaching the partition plate 40, and grinding the partition plate 40 according to the measurement result of the step S4;
s7, mounting the polished partition plate 40;
s8, the dummy shaft 14 is lifted to the target position again, and the steps S4 to S7 are repeated to align the partition plate 40 and the dummy shaft 14 concentrically.
In this embodiment, the second end cap 21 and the dummy shaft 14 are separately arranged, and the hoisting process of the second end cap 21 and the dummy shaft 14 can be separated, so that the dummy shaft 14 can be repeatedly hoisted only in the multiple-time alignment process of the partition plate 40, thereby avoiding repeated hoisting of the second end cap 21, reducing the process and time of hoisting, improving the hoisting efficiency, and improving the efficiency of utilizing the dummy shaft to align the partition plate.
As shown in fig. 3, after the first end cap 20 is mounted in step S1, a first supporting member 11 is disposed in the first end cap 20 (as shown in fig. 2), and a second supporting member 13 is disposed on at least one of the partition boards 40 (as shown in fig. 2); the dummy shaft 14 in the pre-installed position in step S2 is placed on the first support 11 and the second support 13. In this embodiment, the first support 11 and the second support 13 are bearing pads for supporting the dummy shaft 14, and are disposed to match with the dummy shaft 14. Before the pre-installation position, the dummy shaft 14 can be firstly hoisted to the second support piece 13, and at the moment, the second support piece 13 has a good support effect on the dummy shaft 14, so that the hoisting levelness is more controllable; the dummy shaft 14 is then laterally moved toward the first end cap 20 to straddle the dummy shaft 14 over the first and second support members 11 and 13 to a pre-assembly position.
The first support 11 is disposed in the sealed cavity of the first end cap 20, and the top surface of the first support 11 and the top surface of the second support 13 are in the same plane. This arrangement ensures the levelness of the dummy shaft 14, enabling the axis of the dummy shaft 14 in the pre-mount position to coincide with the axis of the housing 30.
As shown in fig. 3c, after the second end cap 21 is mounted in step S3, a third supporting member 12 (the position is shown in fig. 2) is disposed in the second end cap 21; a dummy shaft 14 of a target position (the position is shown in fig. 1) is provided on the first support 11 and the third support 12. The third support 12 in this embodiment is a bearing shell that mates with the dummy shaft 14. After the third support member 12 is completely set, the dummy shaft 14 in the pre-installed position is moved toward the second end cap 21, so that the dummy shaft 14 crosses over the first support member 11 and the third support member 12 to reach the target position.
As shown in fig. 3d, the third supporting member 12 is disposed in the sealing cavity of the second end cap 21, the second end cap 21 is disposed coaxially with the first end cap 20, and the top surface of the third supporting member 12 is in the same plane as the top surface of the first supporting member 11. This arrangement ensures the levelness of the dummy shaft 14, enabling the axis of the dummy shaft 14 at the target position to coincide with the axis of the housing 30. The dummy shaft 14 of the target position functions as a substitute rotor.
The second support 13 is removed after the dummy shaft 14 is in the target position, avoiding subsequent obstructions in aligning the dummy shaft 14 and the spacer 40.
In step S4, after the dummy shaft 14 reaches the target position, an inside micrometer is used to measure the distance between the dummy shaft 14 and each partition plate 40, the left, right, and lower three-point positions are taken during the measurement process to perform the measurement, and the adjustment amount of each partition plate is determined according to the measurement result.
After the partition 40 is removed in step S6, the partition 40 is polished according to the measurement result of step S4.
As shown in fig. 4, the process of removing the dummy shaft 14 at step S5 includes the steps of:
s51, moving the dummy shaft 14 towards the first end cap 20 until the first end of the dummy shaft 14 is pulled out of the second end cap 21 (as shown in FIG. 4 b);
s52, lifting the first end of the dummy shaft 14 and gradually lifting the dummy shaft 14 out of the housing 30 to make the dummy shaft 14 in a tilted state (as shown in fig. 4 c);
s53, the dummy shaft 14 in the tilted state is moved out of the housing 30 (as shown in fig. 4d and 4 e).
In the removing process of the dummy shaft 14 in the embodiment, the second end cover 21 is not detached, so that the hoisting process is reduced, and the hoisting efficiency is improved.
In this embodiment, when the dummy shaft 14 is mounted again in step S8, it is necessary to avoid contact between the dummy shaft 14 and the first end cap 20 and the second end cap 21, and the method specifically includes the following steps:
s81, horizontally hoisting the dummy shaft 14 to the upper part of the machine shell 30, and adjusting the dummy shaft 14 to be in an inclined state;
s82, the second end of the dummy shaft 14 in the inclined state is sent into the first end cover 20 until the wall surface of the dummy shaft 14 is attached to the wall surface of the first end cover 20, and the height of the first end of the dummy shaft 14 is reduced until the dummy shaft 14 is adjusted to be in the horizontal state;
s83, the dummy shaft 14 in the horizontal state is moved laterally in the direction of the second end cap 21 until the dummy shaft 14 is at the target position.
In this embodiment, in the process of repeatedly installing the dummy shaft 14 in step S8, the inclination angle of the dummy shaft 14 is first adjusted, the second end of the dummy shaft 14 enters the first end cap 20 until the wall surface of the dummy shaft 14 is attached to the wall surface of the second end cap 20, at this time, the length of the second end of the dummy shaft 14 entering the first end cap 20 is already the largest, and since the inclination angle is in accordance with the installation requirement, the projection of the first end of the dummy shaft 14 on the axis of the chassis 30 at this time is located between the first end cap 20 and the second end cap 21. When the height of the first end of the dummy shaft 14 is reduced later, the contact between the dummy shaft 14 and the second end cover 21 can be avoided, and the collision damage of the dummy shaft 14 and the second end cover 21 can be avoided.
When the dummy shaft 14 is repeatedly mounted in step S8 in this embodiment, the second supporting member 13 may be mounted on the partition plate 40 again according to the mounting requirement, and after the dummy shaft 14 is adjusted to be in the horizontal state, the dummy shaft 14 straddles over the first supporting member 11 and the second supporting member 13, so as to provide good support for the dummy shaft 14, make the air attitude of the dummy shaft 14 more stable, and provide a good operation basis for the subsequent traverse movement of the dummy shaft 14 toward the second end cap 21.
The inclination angle between the axis of the dummy shaft 14 in the inclined state and the axis of the casing 30 in this embodiment has a maximum value and a minimum value, and the inclination angle during repeated mounting and dismounting of the dummy shaft 14 should not be greater than the maximum value and not less than the minimum value, otherwise, the mounting and dismounting process of the dummy shaft 14 may collide with other structures of the compressor, causing unnecessary damage.
The step of obtaining the maximum value and the minimum value of the inclination angle in this embodiment includes:
transversely moving the dummy shaft 14 at the target position towards the first end cover 20 until the first end in the second end cover 21 is separated from the second end cover 21, and the end surface of the first end is tightly attached to the end surface of the second end cover 21;
the first end is lifted, and when the extension line of the lower wall surface of the first end is attached to the highest point of the second end cover 21, the minimum value beta (shown in fig. 5) of the inclined included angle is obtained;
the first end is further raised, and when the upper wall surface of the dummy shaft 14 positioned in the first end cap 20 is attached to the wall surface of the first end cap 20, the maximum value α of the inclination angle is obtained (as shown in fig. 6).
When the included angle of tilt is at a maximum, the second end of the dummy shaft 14 is located within the first end cap 20 and the bore size of the seal cavity of the first end cap 20 limits the degree of tilt of the dummy shaft 14. At the maximum inclination angle, the dummy shaft 14 may have two contact points, one of which is a point where the upper wall surface of the dummy shaft 14 abuts against the wall surface of the first end cap 20, and the other of which is a point where the lower wall surface of the second end of the dummy shaft 14 abuts against the lower wall surface of the seal cavity of the first end cap 20, and may be a point where the lower wall surface of the second end of the dummy shaft 14 abuts against the upper wall surface of the first support 11; the dummy shaft 14 may have three contact points, a first contact point being a point where the upper wall surface of the dummy shaft 14 abuts the wall surface of the first end cap 20, a second contact point being a point where the lower wall surface of the second end of the dummy shaft 14 abuts the lower wall surface of the sealed cavity of the first end cap 20, and a third contact point being a point where the lower wall surface of the second end of the dummy shaft 14 abuts the upper wall surface of the first support member 11. The dummy shaft 14 in this embodiment has two contact points, one of which is a point where the upper wall surface of the second end of the dummy shaft 14 abuts against the upper wall surface of the seal chamber of the first end cap 20, and the other of which is a point where the lower wall surface of the second end of the dummy shaft 14 abuts against the upper wall surface of the first support 11 (see fig. 6).
In this embodiment, the dummy shaft 14 is provided with two lifting point structures, the two lifting point structures are respectively connected to two sling structures (as shown in fig. 4), and at least one sling structure is provided with a chain block for adjusting the length of the sling, so as to rotate the dummy shaft 14 to adjust the horizontal state and the inclined state.
The embodiment provides an integral step of alignment work of a compressor shell and a partition plate, which comprises the following steps:
the method comprises the following steps: preparation work
(1) The dummy shaft 14 is designed. The length L and diameter D of the dummy shaft 14 are determined according to the span between the first end cap 20 and the second end cap 21.
L is larger than or equal to the supporting span of the compressor rotor, and D is smaller and better under the condition of meeting the integral rigidity of the dummy shaft 14.
(2) And designing a false tile. In the present embodiment, three false tiles (the first support 11, the second support 13, and the third support 12) are used in common. The false shoe is designed according to the diameter D of the false shaft 14, the first support workpiece 11 and the second support 13 in the figure 2 improve the support of the false shaft 14 during the installation process, and the third support 12 provides the support of the false shaft 14 during the alignment process.
(3) The range of values of the inclination angle of the dummy shaft 14 is determined. Based on the span between the first end cap 20 and the second end cap 21, as well as the size of the inner bore of the end cap seal cavity, and the length L and diameter D of the dummy shaft 14, the range of inclination of the dummy shaft 14 is determined as follows: beta is not less than the inclination angle and not more than alpha. α is the maximum angle of inclination available for the dummy shaft 14 and β is the minimum angle of inclination available for the dummy shaft 14.
(4) The corresponding lifting tool is prepared. And selecting a proper hoisting tool of the dummy shaft 14 according to the sizes of the inclination angles alpha and beta. The dummy shaft 14 is hoisted by using a two-point hoisting method, one hoisting point is fixed, and the other hoisting point can freely adjust the height of the hoisting point through a chain block, so that the rotation of the dummy shaft 14 is realized.
Step two: alignment of enclosure and partition
(1) The dummy shaft 14 is installed. The first end cap 20 is lifted separately to its mounting position, and the first support 11 is mounted in the sealed cavity of the first end cap 20. A second support member 13 is mounted at a position of a certain partition plate 40 in the middle. The dummy shaft 14 is lifted and dropped onto the second support 13 (as shown in fig. 3 a), and then the dummy shaft 14 is moved laterally toward the first end cap 20 to the first support 11 (as shown in fig. 3 b), and the support of the dummy shaft 14 is completed by the first support 11 and the second support 13. The second end cap 21 is lifted separately to its mounting position and the third support 12 is mounted in the sealed cavity of the second end cap 21 (as shown in figure 3 c). The dummy shaft 14 is moved laterally in the direction of the second end cap 21 to the third support member 12, the dummy shaft 14 is moved across the first support member 11 and the third support member 12, and the second support member 13 is removed.
(2) Alignment of the spacer 40. And measuring the distance between the dummy shaft 14 and the matching part of each partition plate 40 by using an inside micrometer, taking left, right and lower three-point measurement, and judging the adjustment amount of each partition plate according to the measurement result.
(3) Dummy shaft removal (as shown in fig. 4). The dummy shaft 14 is lifted and moved towards the first end cap 20, so that the first end stub shaft of the dummy shaft 14 is exposed from the second end cap 21 (as shown in fig. 4 b). The hand chain block is used for adjusting the inclination angle A of the dummy shaft 14 until the inclination angle A meets the following requirements: beta is not more than the inclination angle not more than alpha. The dummy shaft 14 is then slowly hoisted out.
(4) And hanging the partition plate out for polishing according to the adjustment amount of the partition plate.
(5) The dummy shaft 14 is reinstalled. Hoisting the dummy shaft 14 to the upper part of the casing 30, and adjusting the inclination angle A of the dummy shaft 14 by using a chain block until the inclination angle A meets the following requirements: beta is not more than the inclination angle not more than alpha. The second end of the dummy shaft 14 is then slowly advanced into the first end cap 20 until the wall of the second end abuts the wall of the first end cap 20, indicating that the second end has reached its maximum length. The height of the first end of the dummy shaft 14 is adjusted by using the chain block, if the second supporting member 13 is provided on the partition plate 40, the dummy shaft 14 can be directly dropped on the second supporting member 13, the dummy shaft 14 spans the first supporting member 11 and the second supporting member 13, and if the second supporting member 13 is not provided, the dummy shaft 14 needs to be directly adjusted to a horizontal state. The dummy shaft 14 in the horizontal state is moved in the direction of the second end cap 21 onto the third support member 12.
(6) Repeating the work contents of (2) to (5) until the concentricity of the partition plate 40 and the casing 30 meets the expected standard.
Compared with the original assembly process of the M + B compressor unit, the method cancels the assembly and hoisting procedures of the dummy shaft and the end cover, so that the dummy shaft 14 can be independently assembled with the end cover, the repeated assembly of the dummy shaft and the end cover and the assembly and disassembly of the whole dummy shaft and the end cover are reduced, and the assembly efficiency is greatly improved.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An alignment method for horizontally splitting a large compressor shell and a partition plate is characterized by comprising the following steps:
s1, installing a partition plate (40) and a first end cover (20) on the machine shell (30);
s2, hoisting the dummy shaft (14) to a preassembly position;
s3, mounting a second end cover (21) on the machine shell (30), and adjusting the dummy shaft (14) at a pre-assembly position to a target position;
s4, measuring the concentricity of the clapboard (40) and the dummy shaft (14);
s5, removing the dummy shaft (14);
s6, detaching the clapboard (40), and grinding the clapboard (40) according to the measurement result of the step S4;
s7, mounting the polished partition plate (40);
s8, re-hoisting the dummy shaft (14) to the target position, and repeating the steps S4 to S7 to concentrically align the partition plate (40) and the dummy shaft (14).
2. The method for aligning the shell and the partition of the horizontally split large compressor in claim 1,
after the first end cover (20) is installed in the step S1, a first support member (11) is disposed in the first end cover (20), and a second support member (13) is disposed on at least one of the partition plates (40);
the dummy shaft (14) in the pre-installed position in the step S2 is placed on the first support member (11) and the second support member (13).
3. The method for aligning the shell and the partition of the horizontally split large compressor in claim 2,
the first supporting piece (11) is arranged in a sealing cavity of the first end cover (20), and the top surface of the first supporting piece (11) and the top surface of the second supporting piece (13) are in the same plane.
4. The method for aligning the shell and the partition of the horizontally split large compressor in claim 2,
after the second end cover (21) is installed in the step S3, arranging a third support member (12) in the second end cover (21);
the dummy shaft (14) of the target position is disposed on the first support (11) and the third support (12).
5. The method for aligning the shell and the partition of the horizontally split large compressor according to claim 4,
the third supporting piece (12) is arranged in a sealing cavity of the second end cover (21), the second end cover (21) and the first end cover (20) are coaxially arranged, and the top surface of the third supporting piece (12) and the top surface of the first supporting piece (11) are in the same plane.
6. The method for aligning the shell and the partition of the horizontally split large compressor according to claim 4,
removing the second support (13) after the dummy shaft (14) is in the target position.
7. The method for aligning the shell and the partition of the horizontally split large compressor in claim 1,
the step S5 includes the steps of:
s51, moving the dummy shaft (14) towards the first end cover (20) until the first end of the dummy shaft (14) is pulled out of the second end cover (21);
s52, the first end of the dummy shaft (14) is lifted up and gradually lifted out of the machine shell (30) so that the dummy shaft (14) is in an inclined state;
s53, moving the false shaft (14) in the inclined state out of the machine shell (30).
8. The method for aligning the shell and the partition of the horizontally split large compressor in claim 1,
the step S8 includes the steps of:
s81, horizontally hoisting the dummy shaft (14) to the upper part of the machine shell (30), and adjusting the dummy shaft (14) to an inclined state;
s82, sending the second end of the dummy shaft (14) in the inclined state into the first end cover (20) until the wall surface of the dummy shaft (14) is attached to the wall surface of the first end cover (20), and reducing the height of the first end of the dummy shaft (14) until the dummy shaft (14) is adjusted to be in a horizontal state;
s83, the dummy shaft (14) in the horizontal state is transversely moved towards the direction of the second end cover (21) until the dummy shaft (14) is at the target position.
9. The method for aligning a horizontally split large compressor casing and a partition according to any one of claims 7 and 8,
the inclined included angle between the axis of the dummy shaft (14) and the axis of the casing (30) in the inclined state has a maximum value and a minimum value.
10. The method for aligning the horizontally split large compressor casing and the partition according to claim 9,
the step of obtaining the maximum value and the minimum value of the inclined included angle comprises the following steps:
traversing the dummy shaft (14) at the target position in the direction of the first end cover (20) until the first end positioned in the second end cover (21) is pulled out of the second end cover (21), and the end face of the first end is tightly attached to the end face of the second end cover (21);
the first end is lifted, and when the extension line of the lower wall surface of the first end is attached to the highest point of the second end cover (21), the minimum value of the inclined included angle is obtained;
and continuously raising the first end, and obtaining the maximum value of the inclined included angle when the upper wall surface of the dummy shaft (14) positioned in the first end cover (20) is attached to the wall surface of the first end cover (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111560093.XA CN114233689B (en) | 2021-12-20 | 2021-12-20 | Alignment method for horizontal split large compressor shell and partition plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111560093.XA CN114233689B (en) | 2021-12-20 | 2021-12-20 | Alignment method for horizontal split large compressor shell and partition plate |
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| Publication Number | Publication Date |
|---|---|
| CN114233689A true CN114233689A (en) | 2022-03-25 |
| CN114233689B CN114233689B (en) | 2023-06-30 |
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| CN202111560093.XA Active CN114233689B (en) | 2021-12-20 | 2021-12-20 | Alignment method for horizontal split large compressor shell and partition plate |
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| JP2015137629A (en) * | 2014-01-24 | 2015-07-30 | 三菱重工業株式会社 | Alignment adjusting method in rotary shaft system and alignment measuring device |
| CN107984166A (en) * | 2017-11-01 | 2018-05-04 | 沈阳透平机械股份有限公司 | The abdominal cavity processing method of horizonally split formula centrifugal compressor casing |
| CN108032077A (en) * | 2017-10-31 | 2018-05-15 | 沈阳透平机械股份有限公司 | The horizontal aligning method of large-scale cartridge type centrifugal compressor rotor and partition plate beam |
| CN211183734U (en) * | 2019-12-20 | 2020-08-04 | 上海上电机电设备工程有限公司 | Safe and reliable platform for core-pulling assembly and maintenance of medium-large motor |
| CN112360582A (en) * | 2020-10-27 | 2021-02-12 | 国电泉州热电有限公司 | High-medium-pressure non-dummy shaft final assembly method for remanufacturing unit |
| CN113381569A (en) * | 2021-06-16 | 2021-09-10 | 华能太仓发电有限责任公司 | Motor rotor penetrating device |
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2021
- 2021-12-20 CN CN202111560093.XA patent/CN114233689B/en active Active
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| JP2015137629A (en) * | 2014-01-24 | 2015-07-30 | 三菱重工業株式会社 | Alignment adjusting method in rotary shaft system and alignment measuring device |
| CN108032077A (en) * | 2017-10-31 | 2018-05-15 | 沈阳透平机械股份有限公司 | The horizontal aligning method of large-scale cartridge type centrifugal compressor rotor and partition plate beam |
| CN107984166A (en) * | 2017-11-01 | 2018-05-04 | 沈阳透平机械股份有限公司 | The abdominal cavity processing method of horizonally split formula centrifugal compressor casing |
| CN211183734U (en) * | 2019-12-20 | 2020-08-04 | 上海上电机电设备工程有限公司 | Safe and reliable platform for core-pulling assembly and maintenance of medium-large motor |
| CN112360582A (en) * | 2020-10-27 | 2021-02-12 | 国电泉州热电有限公司 | High-medium-pressure non-dummy shaft final assembly method for remanufacturing unit |
| CN113381569A (en) * | 2021-06-16 | 2021-09-10 | 华能太仓发电有限责任公司 | Motor rotor penetrating device |
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| CN114233689B (en) | 2023-06-30 |
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