CN115213861A - Leveling device and leveling method for multistage pump rotor - Google Patents

Abstract

The invention belongs to the technical field of nuclear power engineering, and discloses a multi-stage pump rotor leveling device and a leveling method. The multi-stage pump rotor leveling device includes a base, a column and a support mechanism. The base is provided with a protrusion, and the column is located above the base. , the top and bottom of the column are respectively provided with a first through hole and a second through hole, the protrusion penetrates through the second through hole and is rotatably connected with the column, the supporting mechanism includes a clamping assembly and a supporting seat, and the clamping assembly is connected to the support Above the seat, the rotor is lifted and placed above the support seat, and the rotor is clamped by the clamping assembly. The lower part can move in the vertical direction relative to the column, so that the rotor can be in a horizontal state, realize the rapid leveling of the rotor, avoid the jamming between parts due to the tilt of the rotor, and reduce the safety risk when the operator disassembles the rotor. .

Description

Multistage pump rotor leveling device and leveling method

technical field

The invention relates to the technical field of nuclear power engineering, in particular to a multistage pump rotor leveling device and a leveling method.

Background technique

Large-scale multi-stage pumps are important nuclear power equipment in nuclear power plants. They can be roughly divided into rotor assemblies and stator assemblies. The function of the rotor assembly is to generate centrifugal force through its own rotation, and then output power to the outside world. The rotor assembly mainly includes the impeller, guide bearing, shaft sleeve, coupling, etc. In order to ensure the normal operation of the multi-stage pump, regular maintenance and inspection are required. Therefore, the rotor assembly of the multi-stage pump is extracted from the pump pit and transported. Go to the maintenance site to disassemble the rotor assembly.

Usually, the rotor is placed horizontally on the sleeper, and then the measured value of the levelness of the rotor assembly is measured, and the height of the sleeper at different positions on the rotor assembly is adjusted by a jack, so that the rotor assembly is in a horizontal state, so as to ensure the smoothness of the rotor assembly during the disassembly process. Safety and the accuracy of testing quality, and then disassemble each part of the rotor assembly in turn with tools such as chain hoists and slings. However, during the disassembly process, the rotor slips or rotates, resulting in the overall inclination of the rotor assembly, which causes jamming when disassembling and assembling the impeller, shaft sleeve and other components, thereby damaging other parts such as the pump shaft.

Therefore, a multi-stage pump rotor leveling device and a leveling method are urgently needed to solve the above problems.

SUMMARY OF THE INVENTION

According to one aspect of the present invention, the present invention provides a multi-stage pump rotor leveling device, which is used to adjust the level of the rotor of the multi-stage pump, and adjust the level of the rotor at any time during the process of disassembling the rotor, so as to avoid the inclination of the rotor. Intermittent jamming, and at the same time, it can reduce the safety operation risk of the operator during the process of disassembling the rotor.

In order to solve the above-mentioned problems existing in the prior art, the present invention adopts the following technical solutions:

The multistage pump rotor leveling device is used to adjust the rotor levelness of the multistage pump, including:

a base, the base is provided with a protrusion;

a column, located above the base, the top and the bottom of the column are respectively provided with a first through hole and a second through hole, the protrusion penetrates the second through hole and is rotatably connected with the column;

The supporting mechanism includes a clamping assembly and a supporting seat, the clamping assembly is connected above the supporting seat, the clamping assembly is used for clamping the rotor, the supporting seat is located on the upright column, and the The rod portion of the support seat is threadedly connected to the first through hole, and the support seat can move in a vertical direction relative to the vertical column under the rotation of the vertical column, so that the rotor can be in a horizontal state.

Preferably, the clamping assembly includes a baffle plate and a support plate, the support plate is detachably connected to the top of the support base, the baffle plate is connected to the support plate, and the baffle plate is along the direction of the rotor. Extending in the axial direction, the baffle plate is used to block the rotor.

Preferably, the number of the baffles is two, the two baffles are arranged opposite and spaced apart, the support plate is connected between the two baffles, and the support plate is used to support the rotor.

Preferably, the multistage pump rotor leveling device further includes a connecting piece, the support plate is provided with a mounting hole, the mounting hole is a waist-shaped hole, the baffle is provided with a threaded hole, and the connecting piece passes through The mounting hole is threadedly connected to the threaded hole.

Preferably, the multistage pump rotor leveling device further comprises a locking nut, the locking nut is movably sleeved on the rod portion of the support seat, and the locking nut can be pressed against the upright column, so that the The relative positions of the support base and the upright column are locked.

Preferably, the multi-stage pump rotor leveling device further includes a hand-held rod, the upright column is further provided with a third through hole, and the hand-held rod can pass through the third through hole and rotate the upright column, so that all the The support base can move in a vertical direction relative to the upright column.

Preferably, the multi-stage pump rotor leveling device further comprises an anti-skid pad, which is made of rubber material, the anti-skid pad is arranged on the clamping assembly, and the anti-skid pad is used to prevent the rotor from slipping.

According to another aspect of the present invention, a method for leveling a rotor of a multi-stage pump is provided. Through the implementation of the above-mentioned multi-stage pump rotor leveling device, the multi-stage pump rotor leveling device is provided with a plurality of Leveling methods include:

S100: A plurality of the bases are marked and arranged in a straight line, and a ruler or a straight beam is used to align the plurality of the support bases with the marks of the base and place them on a straight line;

S200: Assemble all components except the base and the support;

S300: Lift and place the rotor above the support base, and clamp the rotor through the clamping assembly;

S400: Rotate the upright column under the action of an external force, and the upright column and the support seat are driven and cooperated, so that the support seat can move up and down in a vertical direction relative to the upright column, and the rotor is adjusted to be in a horizontal state.

Preferably, the multistage pump rotor leveling device further comprises a locking nut, the locking nut is movably sleeved on the rod portion of the support seat, and the locking nut can be pressed against the upright column, so that the The relative positions of the support base and the upright column are locked;

S400 in the multi-stage pump rotor leveling method is specifically:

S401: When the level of the rotor needs to be adjusted, loosen the lock nut, the lock nut moves upward relative to the support seat in the vertical direction, and the lock nut gradually moves away from the upright column, Rotating the upright column under the action of external force, the upright column and the support seat are driven and cooperated, so that the support seat can move up and down relative to the upright column in the vertical direction, and the rotor is adjusted to be in a horizontal state;

S402: Tighten the lock nut, and the lock nut moves downward relative to the support seat in the vertical direction until the lock nut is pressed against the upright column, so that the support seat and the upright column relative position lock.

Preferably, the multi-stage pump rotor leveling device further comprises an anti-skid pad, which is made of rubber material, the anti-skid pad is arranged on the clamping assembly, and the anti-skid pad is used to prevent the rotor from slipping;

The method for leveling the rotor of the multistage pump further includes: between S200 and S300:

S210: After the multi-stage pump rotor leveling device is assembled, the anti-skid pad is arranged between the clamping assembly and the support base, and the anti-skid pad is used to prevent the rotor from slipping during the disassembly process and rotate.

The beneficial effects of the present invention are:

The multi-stage pump rotor leveling device provided by the present invention is used to adjust the rotor level of the multi-stage pump. The column is located above the base, the clamping assembly is connected above the support base, and the rotor is hoisted and placed above the support base. , the rotor is clamped by the clamping assembly, the support seat is located on the column, and the rod part of the support seat is threadedly connected with the first through hole of the column. Move up and down in the vertical direction relative to the column, adjust the rotor to a suitable height, so that the rotor is in a horizontal state, adjust the level of the rotor at any time during the process of disassembling the rotor, realize the rapid leveling of the rotor, and avoid the inclination of the rotor. The jamming between the parts protects other parts of the pump shaft, and at the same time can reduce the safety risk when the operator disassembles the rotor.

The multi-stage pump rotor leveling method provided by the present invention is implemented through the implementation of the multi-stage pump rotor leveling device. After the multi-stage pump rotor leveling devices are assembled, they are placed in a straight line, and the rotors are lifted and placed above the support base. , the clamping assembly clamps the rotor, adjust the height of each multi-stage pump rotor leveling device according to the level of the rotor during the disassembly process, and rotate the column counterclockwise or clockwise by external force, at this time the support seat can be relative to the column along the edge Move up or down in the vertical direction to adjust the rotor to a horizontal state and realize the rapid leveling of the rotor.

Description of drawings

Fig. 1 is the structural schematic diagram 1 of the rotor leveling device of the multi-stage pump in the embodiment of the present invention;

Fig. 2 is the second structural schematic diagram of the multi-stage pump rotor leveling device in the embodiment of the present invention;

FIG. 3 is a flowchart of a method for leveling a rotor of a multistage pump in an embodiment of the present invention.

Reference number:

1. Base;

2. Column;

3. Support seat;

4. Baffle;

5. Support plate;

6. Connectors;

7. Lock nut;

8. Bearing;

9. Anti-slip mat;

10. Bolts.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "left", "right" and other azimuth or positional relationships are based on the azimuth or positional relationship shown in the accompanying drawings, which are only for the convenience of description and simplifying operations. It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used for distinction in description, and have no special meaning.

Place the rotor horizontally on the sleeper, then measure the level of the rotor assembly, and use the jack to adjust the height of the sleeper at different positions on the rotor assembly, so that the rotor assembly is in a horizontal state, so as to ensure the safety and safety of the disassembly process. Check the accuracy of the quality, and then disassemble each part of the rotor assembly in turn with tools such as chain hoists and slings. However, during the disassembly process, the rotor slips or rotates, resulting in the overall inclination of the rotor assembly, which causes jamming when disassembling and assembling the impeller, shaft sleeve and other components, thereby damaging other parts such as the pump shaft. In this regard, this embodiment provides a multi-stage pump rotor leveling device, which is used to adjust the level of the rotor of the multi-stage pump, and adjust the level of the rotor at any time during the process of disassembling the rotor, so as to avoid the inclination of the rotor. Intermittent jamming, and at the same time, it can reduce the safety operation risk of the operator during the process of disassembling the rotor.

As shown in FIG. 1-FIG. 2, in this embodiment, there are multiple multi-stage pump rotor leveling devices, and multiple multi-stage pump rotor leveling devices are arranged below the multi-stage pump rotor for adjusting The level of the rotor of the multi-stage pump, the multi-stage pump rotor leveling device includes a base 1, a column 2 and a support mechanism. Among them, the base 1 is provided with a protrusion, the column 2 is located above the base 1, the top and bottom of the column 2 are respectively provided with a first through hole and a second through hole, and the protrusion is penetrated through the second through hole and is connected with the column 2. Turn the connection. The supporting mechanism includes a clamping assembly and a supporting seat 3, the clamping assembly is connected above the supporting seat 3, the clamping assembly is used to clamp the rotor, the supporting seat 3 is located on the upright column 2, and the rod portion of the supporting seat 3 communicates with the first The holes are screwed together, and the support base 3 can move in the vertical direction relative to the upright post 2 under the rotation of the upright post 2, so that the rotor can be in a horizontal state. Specifically, since the rotor of the multi-stage pump has a relatively large weight, about 10 tons, the rotor is lifted and placed above the support base 3, the rotor is clamped by the clamping assembly, and the column 2 is rotated under the action of external force. Cooperate with the support base 3, at this time the support base 3 moves up and down in the vertical direction relative to the column 2, adjust the rotor to a suitable height, so that the rotor is in a horizontal state, adjust the level of the rotor at any time during the process of disassembling the rotor, It realizes the rapid leveling of the rotor, avoids jamming between parts due to the tilt of the rotor, protects other parts of the pump shaft, and reduces the safety risk of the operator during the process of disassembling the rotor.

Further, with continued reference to FIGS. 1-2 , the clamping assembly includes a baffle plate 4 and a support plate 5 , the support plate 5 is detachably connected to the top of the support base 3 , the baffle plate 4 is connected to the support plate 5 , and the baffle plate 4 runs along the rotor. The shaft is extended in the axial direction, and the baffle plate 4 is used to block the rotor. Specifically, the support plate 5 and the support base 3 are detachably connected by bolts 10 to facilitate disassembly and replacement, and the baffle plate 4 is in contact with the rotor to prevent the rotor from falling off the support plate 5, which has a good limiting effect on the rotor.

Further, referring to FIGS. 1-2, there are two baffles 4, the two baffles 4 are opposite and spaced apart, and the support plate 5 is connected between the two baffles 4, and the support plate 5 is used to support the rotor . Specifically, the two baffles 4 are extended along the axial direction of the rotor, and the rotor is placed on the support plate 5 between the two baffles 4, which further improves the limiting effect on the rotor, and can completely avoid the rotor from the support plate. 5 on roll off.

Further, continue to refer to FIG. 1-FIG. 2, the multistage pump rotor leveling device also includes a connecting piece 6, the support plate 5 is provided with a mounting hole, the mounting hole is a waist-shaped hole, the baffle 4 is provided with a threaded hole, and the connecting piece 6 is provided. Pass through the mounting hole and thread into the threaded hole. Specifically, the connecting member 6 can be a locking bolt of the baffle plate 4, the waist-shaped hole is extended along the axis direction perpendicular to the rotor, and the connecting member 6 can slide in the waist-shaped hole, so as to adapt to the rotors of different sizes, After being placed on the support plate 5, the distance between the two baffles 4 is adjusted so that the two baffles 4 can be pressed against the two sides of the rotor respectively, and then the connecting piece 6 is used to pass through the installation hole and screw it to the rotor. In the threaded hole of the baffle 4 , the relative positions of the baffle 4 and the support plate 5 are locked, so that the rotor is not easy to shake and does not fall from the support plate 5 .

Further, continuing to refer to FIGS. 1-2 , the multi-stage pump rotor leveling device also includes a lock nut 7 , which is movably sleeved on the rod portion of the support base 3 , and the lock nut 7 can be pressed against the upright column 2 . , so that the relative position of the support base 3 and the column 2 is locked. Specifically, after the rotor is placed on the support plate 5, the two baffle plates 4 are used to clamp the rotor, and when the level of the rotor needs to be adjusted, the lock nut 7 is loosened, and the lock nut 7 is vertical relative to the support base 3. Move up in the straight direction, the locking nut 7 is separated from the column 2, and then turn the column 2 counterclockwise or clockwise, at this time, the support base 3 moves up or down in the vertical direction relative to the column 2, and adjust the rotor to the appropriate height, That is, the rotor is in a horizontal state, tighten the lock nut 7, and the lock nut 7 moves downward relative to the support seat 3 in the vertical direction until the lock nut 7 abuts against the column 2, so that the support seat 3 and the column 2 are opposite to each other. Position lock.

Further, referring to Fig. 1-Fig. 2, the multi-stage pump rotor leveling device also includes a hand-held rod, the column 2 is also provided with a third through hole, and the hand-held rod can pass through the third through hole and rotate the column 2, so that the support The seat 3 is movable relative to the column 2 in the vertical direction. Specifically, the handle bar can be a crowbar, the side wall of the column is provided with a third through hole, the handle bar is inserted into the third through hole, the column 2 is rotated counterclockwise or clockwise, the column 2 is rotated relative to the base 1, and the support base 3 It moves up or down in the vertical direction relative to the upright column 2, so that the levelness of each position of the rotor can be adjusted.

Further, with continued reference to FIGS. 1-2 , the multi-stage pump rotor leveling device further includes a bearing 8 , the bearing 8 is sleeved on the protrusion, and the outer ring of the bearing 8 is fixedly connected to the column 2 . Specifically, the upright column 2 and the base 1 are rotatably matched with each other through the bearing 8 to prevent the upright column 2 from being stuck during the rotation process and ensure the smooth rotation of the upright column 2 .

Further, referring to FIGS. 1-2 , the base 1 has a "cross"-shaped structure. Specifically, the load at both ends of the center of the cross is the same, and the force is symmetrical, which is convenient for installation, and is more stable and not easy to shake, thereby ensuring the stability of the rotor on the support base 3 . Optionally, the base 1 may be an X-shaped structure.

Further, with continued reference to FIGS. 1-2 , the multi-stage pump rotor leveling device further includes a non-slip pad 9 made of rubber material. The anti-slip pad 9 is provided on the clamping assembly, and the anti-skid pad 9 is used to prevent the rotor from slipping. Specifically, the anti-skid pad 9 is made of rubber material, which is soft and elastic, wear-resistant and pressure-resistant, has a good anti-skid effect, prevents the rotor from rotating and slips, and can directly clean the dust on the surface of the anti-skid pad 9 with water, which can be used repeatedly.

Further, continue to refer to Fig. 1-Fig. 2, the multi-stage pump rotor leveling device also includes a bracket arranged on the support plate 5 and a curvature measuring instrument arranged on the bracket, the bracket is a "V"-shaped structure, and the bracket is used for The pump shaft is placed, and the camber gauge is used to measure the camber of the pump shaft. Specifically, select a plurality of brackets, place the V-shaped bracket on the support plate 5, and hoist the disassembled pump shaft to the V-shaped bracket. At this time, the gravity of the pump shaft is supported by the bracket. After adjusting the level of the pump shaft, The curvature measuring instrument is set up on the bracket, the needle points to the pump shaft, and the manual disk shaft can measure the curvature of the shaft, which can effectively improve the work efficiency.

The operation process of the multistage pump rotor leveling device is as follows:

First, arrange the multiple bases in a line; then assemble the bearing 8, the column 2, the support base 3, and the support plate 5, loosen the connecting piece 6, and adjust the distance between the two baffle plates 4 to be able to adapt to the rotor The size of the anti-skid pad 9 is inserted between the baffle 4 and the support plate 5 to prevent the rotor from slipping and rotating during the disassembly process, and the connecting piece 6 is tightened; the rotor is lifted horizontally and placed on the support plate between the two baffles 4 5, adjust according to the levelness of the rotor, loosen the lock nut 7, and use the hand-held rod to insert the third through hole of the column 2 for rotation. At this time, the support base 3 will move up and down in the vertical direction relative to the column 2. After adjusting to an appropriate height, tighten the lock nut 7, and finally disassemble the rotor parts in sequence, and the level of the rotor can be adjusted at any time during the disassembly process.

This embodiment also provides a multi-stage pump rotor leveling method. As shown in FIG. 3, through the implementation of the above-mentioned multi-stage pump rotor leveling device, there are multiple multi-stage pump rotor leveling devices. Flat methods include:

S100: Mark the multiple bases 1 and arrange them in a straight line. Use a ruler or a straight beam to align the multiple support bases 3 with the marks on the base 1 and place them on a straight line.

Use a marker to mark several bases 1, and then align several bases 1 one by one through the above marks and arrange them in a line, and use one side of a ruler or other tool to align the marks on the base 1, The number of support seats 3 is the same as that of the base 1, and the plurality of support seats 3 are aligned one by one with the other side of the ruler as the standard line to ensure that all the support seats 3 are in a straight line, so that the rotor can be directly placed on the support seat 3. superior.

S200: Assemble all parts except the base 1 and the support base 3.

The assembly of the bearing 8 , the support plate 5 and the baffle plate 4 is convenient and quick in the assembly process due to the relatively simple structure.

S210: After the multi-stage pump rotor leveling device is assembled, the anti-skid pad 9 is arranged between the clamping assembly and the support base 3, and the anti-skid pad 9 is used to prevent the rotor from slipping and rotating during the disassembly process.

The anti-skid pad 9 is made of rubber material, which is soft and elastic, wear-resistant and pressure-resistant, and has a good anti-skid effect. The dust on the surface of the anti-skid pad 9 is directly washed with water, and can be used repeatedly.

S300: Lift the rotor and place it above the support base 3, and clamp the rotor through the clamping assembly.

The rotor is bundled with a traveling sling and placed on the support base 3 by being hoisted laterally. The clamping assembly has a space capable of accommodating the rotor to clamp the rotor, so as to ensure that the rotor is not easily dropped from the support base 3 .

S400: Rotate the upright column 2 under the action of external force, and the upright column 2 and the support base 3 are driven and cooperated, so that the support base 3 can move up and down relative to the upright column 2 in the vertical direction, and the rotor is adjusted to be in a horizontal state.

The S400 is specifically:

S401: When the level of the rotor needs to be adjusted, loosen the lock nut 7, the lock nut 7 moves upward relative to the support base 3 in the vertical direction, the lock nut 7 gradually moves away from the column 2, and the column is rotated under the action of external force 2. The column 2 and the support base 3 are in driving cooperation, so that the support base 3 can move up and down in the vertical direction relative to the column 2, and the rotor is adjusted to be in a horizontal state.

Adjust the height of several multi-stage pump rotor leveling devices according to the level of the rotor at this time. If the rotor is in a tilted state during the disassembly process, first loosen the lock nut 7, and use the hand-held rod to insert it into the column 2. Counterclockwise or clockwise Clockwise rotation, at this time, the support base 3 can move up or down relative to the upright column 2 until it is adjusted to a suitable height, and the rotor is in a horizontal state.

S402: Tighten the lock nut 7, and the lock nut 7 moves downward relative to the support base 3 in the vertical direction until the lock nut 7 is pressed against the upright column 2, so that the relative position of the support base 3 and the upright column 2 is locked.

When the rotor is in a horizontal state, tighten the lock nut 7, specifically, rotate the lock nut 7 so that the lock nut 7 can move downward relative to the rod of the support base 3 in the vertical direction until the lock nut 7 is close to And finally press against the column 2, at this time, the relative position of the support base 3 and the column 2 is fixed to ensure that the rotor is always in a horizontal state.

In the multi-stage pump rotor leveling method provided in this embodiment, through the implementation of the multi-stage pump rotor leveling device, the multi-stage pump rotor leveling devices are assembled in a straight line, and the rotors are lifted and placed on the support base 3 Above the rotor, the clamping assembly clamps the rotor. During the disassembly process, the height of each multi-stage pump rotor leveling device is adjusted according to the level of the rotor, and the column 2 is rotated counterclockwise or clockwise by external force. At this time, the support seat 3 can Move up or down in the vertical direction relative to the column 2 to adjust the rotor to a horizontal state. In the process of disassembling the rotor, the level of the rotor can be adjusted at any time, so as to realize the rapid leveling of the rotor, avoid the jamming between the parts due to the inclination of the rotor, protect the other parts of the pump shaft, and reduce the disassembly of the operator. Safety risks in the rotor process.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. Multistage pump rotor levelling device for adjust multistage pump's rotor levelness, its characterized in that includes:

the base (1), the said base (1) is equipped with the projection;

the upright post (2) is positioned above the base (1), a first through hole and a second through hole are respectively formed in the top and the bottom of the upright post (2), and the bulge penetrates through the second through hole and is rotatably connected with the upright post (2);

the supporting mechanism comprises a clamping assembly and a supporting seat (3), the clamping assembly is connected above the supporting seat (3) and used for clamping the rotor, the supporting seat (3) is located on the stand column (2), the rod part of the supporting seat (3) is in threaded connection with the first through hole, and the supporting seat (3) can move in the vertical direction relative to the stand column (2) under the rotation of the stand column (2) so that the rotor can be in a horizontal state.

2. The multi-stage pump rotor leveling device according to claim 1, wherein the clamping assembly comprises a baffle plate (4) and a support plate (5), the support plate (5) is detachably connected to the top of the support base (3), the baffle plate (4) is connected to the support plate (5), the baffle plate (4) extends along the axial direction of the rotor, and the baffle plate (4) is used for blocking the rotor.

3. Multistage pump rotor levelling device according to claim 2, characterized in that the number of baffles (4) is two, the two baffles (4) are arranged opposite and spaced apart, the support plate (5) is connected between the two baffles (4), the support plate (5) is used to support the rotor.

4. The leveling device for the rotor of the multistage pump according to claim 2, further comprising a connecting member (6), wherein the support plate (5) is provided with a mounting hole, the mounting hole is a kidney-shaped hole, the baffle plate (4) is provided with a threaded hole, and the connecting member (6) passes through the mounting hole and is in threaded connection with the threaded hole.

5. The leveling device for the rotor of the multistage pump, according to claim 1, further comprising a locking nut (7), wherein the locking nut (7) is movably sleeved on the rod portion of the supporting base (3), and the locking nut (7) can be abutted against the upright post (2) so as to lock the relative positions of the supporting base (3) and the upright post (2).

6. The multi-stage pump rotor leveling device according to claim 1, further comprising a hand-held rod, wherein the column (2) further defines a third through hole, and the hand-held rod can pass through the third through hole and rotate the column (2) so that the support base (3) can move vertically relative to the column (2).

7. Multistage pump rotor leveling device according to claim 1, further comprising a non-slip mat (9) made of a rubber material, the non-slip mat (9) being arranged on the clamping assembly, the non-slip mat (9) being used to prevent the rotor from slipping.

8. A multistage pump rotor leveling method characterized in that a plurality of multistage pump rotor leveling devices are provided by the implementation of the multistage pump rotor leveling device according to any one of claims 1 to 7, the multistage pump rotor leveling method comprising:

s100: the bases (1) are marked and arranged in a straight line shape, and the supporting seats (3) are aligned with the marks of the bases (1) one by one and are positioned on the same straight line by using a ruler or a straight beam;

s200: assembling all parts except the base (1) and the supporting seat (3);

s300: the rotor is hoisted and placed above the supporting seat (3), and is clamped by the clamping assembly;

s400: rotate under the effect of external force stand (2), stand (2) with supporting seat (3) transmission fit makes supporting seat (3) can for stand (2) reciprocate along vertical direction, adjust the rotor is in the horizontality.

9. The leveling method of the multistage pump rotor as recited in claim 8, further comprising a locking nut (7), wherein the locking nut (7) is movably sleeved on the rod portion of the supporting seat (3), and the locking nut (7) can be abutted against the upright post (2) so as to lock the relative positions of the supporting seat (3) and the upright post (2);

s400 in the leveling method of the multistage pump rotor specifically comprises the following steps:

s401: when the levelness of the rotor needs to be adjusted, the locking nut (7) is unscrewed, the locking nut (7) moves upwards relative to the supporting seat (3) along the vertical direction, the locking nut (7) gradually leaves away from the upright post (2), the upright post (2) is rotated under the action of external force, and the upright post (2) is in transmission fit with the supporting seat (3), so that the supporting seat (3) can move up and down relative to the upright post (2) along the vertical direction, and the rotor is adjusted to be in a horizontal state;

s402: and tightening the locking nut (7), wherein the locking nut (7) moves downwards relative to the supporting seat (3) along the vertical direction until the locking nut (7) abuts against the upright post (2), so that the relative position of the supporting seat (3) and the upright post (2) is locked.

10. The method of leveling a rotor of a multistage pump according to claim 8, wherein the apparatus further comprises a non-slip pad (9) made of a rubber material, the non-slip pad (9) being disposed on the clamping assembly, the non-slip pad (9) being used to prevent the rotor from slipping;

the multi-stage pump rotor leveling method further comprises, between S200 and S300:

s210: after the multistage pump rotor leveling device is assembled, the anti-slip pad (9) is arranged between the clamping assembly and the supporting seat (3), and the anti-slip pad (9) is used for preventing the rotor from slipping and rotating in the disassembly process.

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