CN213298391U - Pump body centering device - Google Patents
Pump body centering device Download PDFInfo
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- CN213298391U CN213298391U CN202021573810.3U CN202021573810U CN213298391U CN 213298391 U CN213298391 U CN 213298391U CN 202021573810 U CN202021573810 U CN 202021573810U CN 213298391 U CN213298391 U CN 213298391U
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- pump shaft
- centering device
- pump body
- adjusting
- body centering
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- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to an adjustment mechanism technical field especially relates to a pump body centering device. The pump body centering device comprises at least two connecting structures arranged at the top of the sealing chamber, each connecting structure is provided with at least two adjusting structures, the adjusting structures are used for adjusting the positions of pump shafts in the sealing chamber, all the adjusting structures surround the pump shafts and are uniformly distributed, and the contact surfaces of the adjusting structures and the pump shafts are arc-shaped surfaces. The pump body centering device in this application sets up two at least regulation structures on a connection structure, and every regulation structure is the arcwall face with the contact surface of pump shaft to increase area of contact, reduce the condition of sideslipping and take place.
Description
Technical Field
The utility model relates to an adjustment mechanism technical field especially relates to a pump body centering device.
Background
In the assembling process of the nuclear power station main pump, a pump shaft needs to be centered and positioned. The tool that original factory supplied is used by 4 independent centering instruments cooperations, and every positioning tool is fixed at the seal chamber up end by 1 bolt to assist the use of percentage table. In the process of pump shaft centering, because reasons such as 4 independent positioning tool atress inequality, kicking block and pump shaft contact surface are little, the condition that sideslips often takes place for the centering instrument, influences work efficiency.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a pump body centering device sets up two at least regulation structures on a connection structure, and every contact surface of adjusting structure and pump shaft is the arcwall face to increase area of contact, reduce the condition emergence that sideslips.
The embodiment of the utility model provides a pump body centering device, which comprises at least two connecting structures arranged at the top of a sealing chamber;
every all be equipped with two at least regulation structures on the connection structure, regulation structure be used for adjusting set up in the pump shaft position in the seal chamber, all regulation structure centers on the pump shaft evenly distributed, wherein, regulation structure with the contact surface of pump shaft is the arcwall face.
Further, the adjusting structure comprises a base, a positioning block and a first adjusting piece;
the base is mounted on the connecting structure, the first adjusting piece is used for connecting the positioning block to one side, facing the pump shaft, of the base, and the first adjusting piece can drive the positioning block to move towards or away from the pump shaft;
the surface of the positioning block, which is in contact with the pump shaft, is an arc-shaped surface.
Further, the first adjusting piece comprises a first screw rod, a first nut and a first connecting block;
the first screw penetrates through the first nut and the base to be connected with the first connecting block arranged in the positioning block.
Furthermore, a counter bore for installing the first connecting block is formed in one side, facing the pump shaft, of the positioning block.
Further, the pump body centering device also comprises a dial indicator, wherein the dial indicator is connected to the base and can move towards the position close to or far away from the pump shaft.
Further, the pump body centering device also comprises a second adjusting piece, the second adjusting piece is connected with the base, the dial indicator is assembled on the second adjusting piece, and the second adjusting piece can enable the dial indicator to move towards or away from one end of the pump shaft.
Further, the second adjusting piece comprises a second screw rod, a second nut and a second connecting block;
the second screw rod passes through the second nut and the base is connected with the second connecting block, the dial indicator is connected with the second connecting block, and the second connecting block can rotate relative to the dial indicator.
Further, all the connection structures are symmetrically arranged with respect to a center line of the sealed chamber.
Further, the adjusting structures on all the connecting structures are symmetrically arranged.
Furthermore, each connecting structure is provided with at least three mounting holes for being connected with the top of the sealing chamber, and the three mounting holes are distributed at intervals along the extending direction of the connecting structure.
The pump body centering device comprises at least two connecting structures arranged at the top of a sealing chamber, wherein each connecting structure is provided with at least two adjusting structures; and because the contact surface and the arc surface of the adjusting structure and the pump shaft increase the contact surface between the adjusting structure and the pump shaft, the condition that the adjusting structure sideslips when adjusting the pump shaft is reduced.
Drawings
Fig. 1 is a schematic view of a pump body centering device according to an embodiment of the present invention;
fig. 2 is a top view of an adjusting structure, a dial indicator and a first adjusting member in a pump body centering device according to an embodiment of the present invention;
fig. 3 is a cross-sectional view a-a of fig. 2.
Icon:
10-a connecting structure; 11-mounting holes; 20-a regulating structure; 21-a base; 22-a positioning block; 23-a first adjustment member; 231-a first screw; 232-a first nut; 233-a first connection block; 30-dial indicator; 40-a second adjustment member; 41-a second screw; 42-a second nut; 43-second connecting block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
First, a scene of application of the pump body centering device is explained, in an assembly process of an RCP main pump of a nuclear power station, when a pump shaft penetrates into a pump chamber, in order to facilitate subsequent assembly of parts such as an impeller and the like, measurement of numerical values and other work, the pump shaft needs to be temporarily centered and positioned. In order to adjust the well location to the pump shaft for the convenience, the application provides a pump body centering device, combines the figure detailed description below to describe the pump body centering device that the embodiment of the utility model provides.
Fig. 1 is a schematic view of a pump body centering device according to an embodiment of the present invention, as shown in fig. 1, the present invention provides a pump body centering device, which includes at least two connecting structures 10 installed on the top of a sealing chamber; each connecting structure 10 is provided with at least two adjusting structures 20, each adjusting structure 20 is used for adjusting the position of a pump shaft arranged in the sealing chamber, all the adjusting structures 20 are uniformly distributed around the pump shaft, and the contact surface between each adjusting structure 20 and the pump shaft is an arc-shaped surface.
The pump body centering device comprises at least two connecting structures 10 arranged at the top of a sealing chamber, wherein each connecting structure 10 is provided with at least two adjusting structures 20, and when the position of a pump shaft in the sealing chamber needs to be adjusted, when any one adjusting structure 20 on one connecting structure 10 is stressed, at least two adjusting structures 20 connected to one connecting structure 10 are stressed at the same time, so that the stress of the adjusting structures 20 is relatively uniform; and because the contact surface and the arc surface of the adjusting structure 20 and the pump shaft increase the contact surface between the adjusting structure 20 and the pump shaft, the occurrence of sideslip generated when the adjusting structure 20 adjusts the pump shaft is reduced.
It should be noted that the number of the connecting structures 10 and the number of the adjusting structures 20 on each connecting structure 10 need to be determined according to the specific use situation.
As an alternative mode, fig. 2 is a top view of an adjusting structure 20, a dial indicator 30 and a first adjusting part 23 in a pump body centering device according to an embodiment of the present invention; as shown in fig. 2, the adjusting structure 20 includes a base 21, a positioning block 22 and a first adjusting member 23;
the base 21 is mounted on the connecting structure 10, the first adjusting element 23 is used for connecting the positioning block 22 to a side of the base 21 facing the pump shaft, and the first adjusting element 23 can drive the positioning block 22 to move towards or away from the pump shaft;
the contact surface of the positioning block 22 and the pump shaft is an arc surface.
The first adjusting member 23 may have a variety of structural forms, as long as the first adjusting member can drive the positioning block 22 to extend or retract, and the structural form of the first adjusting member 23 is not illustrated here.
In this embodiment, the connecting structure 10 may be disposed in an arc shape, and the base 21 may be slidably mounted on the connecting structure 10 along the extending direction of the connecting structure 10, so that the position of the base 21 on the connecting structure 10 may be conveniently adjusted; the positioning block 22 is mounted between the base 21 and the pump shaft through the first adjusting part 23, when the position of the pump shaft in the sealing chamber needs to be adjusted, the first adjusting part 23 can drive the positioning block 22 to move towards the position where the pump shaft is located, the positioning block 22 is in contact with the outside of the pump shaft and pushes the pump shaft to move along the moving direction of the positioning block 22, the position of the pump shaft in the sealing chamber is further adjusted, and the position of the positioning block 22 relative to the pump shaft can be adjusted through the base 21 so as to adjust the position of the pump shaft for multiple times, so that the position of the pump shaft is more accurate; in addition, because the surface of pump shaft is the arcwall face, and the surface that locating piece 22 and pump shaft contact also is the arcwall face to increased the area of contact of locating piece 22 with the pump shaft, can improve the stability of locating piece 22 when driving the pump shaft and remove, the condition that reduces to sideslip takes place.
As an alternative, as shown in fig. 3, the first adjusting member 23 includes a first screw 231, a first nut 232, and a first connecting block 233;
the first screw 231 penetrates through the first nut 232 and the base 21 to be connected with the first connecting block 233 arranged in the positioning block 22.
In this embodiment, a threaded hole may be formed in the base 21, and the first screw 231 passes through the first nut 232 and the threaded hole to be connected to the first connecting block 233 arranged in the positioning block 22, so that the positioning block 22 is connected to the first screw 231, and when the positioning block 22 needs to be moved, the first screw 231 is rotated to increase or decrease the length of the first screw 231 between the base 21 and the pump shaft, so as to adjust the position relationship between the positioning block 22 and the pump shaft, and complete the position adjustment of the pump shaft.
The hole for the first screw 231 to pass through may also be a non-threaded hole, and due to the arrangement of the first nut 232, the first nut 232 may lock the position of the first screw 231, so that after the positioning block 22 is moved to the set position, the position thereof can be fixed, and the precision of adjusting the position of the pump shaft is ensured.
In addition, one side of the positioning block 22 facing the first screw 231 is provided with a connecting hole with a step-shaped cross section, and the first connecting block 233 penetrates the positioning block 22 from one side of the positioning block 22 facing the pump shaft to be connected with the first screw 231, so that when the first screw 231 rotates, the positioning block 22 cannot rotate along with the first screw 231, and stable contact between the positioning block 22 and the pump shaft is ensured.
It should be noted that a counterbore for installing the first connecting block 233 is formed in one side of the positioning block 22 facing the pump shaft. The counter bore is arranged to ensure that the contact surface of the positioning block 22 and the pump shaft is also an arc surface after the first connecting block 233 connects the first screw 231 to the positioning block 22.
As an optional way, the pump body centering device further includes a dial indicator 30, the dial indicator 30 is connected to the base 21, and the dial indicator 30 can move to a position close to or far away from the pump shaft. When the adjusting structure 20 adjusts the position of the pump shaft and adjusts the pump shaft to meet the centering requirement, the position of the dial indicator 30 is adjusted, and the value of the fine adjustment of the pump shaft is read.
The dial indicator 30 is located above the positioning block 22 along the extending direction of the pump shaft, so that the position of the dial indicator 30 can be directly adjusted after the pump shaft is positioned, and the value of the precision of the pump shaft can be read.
As an optional mode, the pump body centering device further includes a second adjusting member 40, the second adjusting member 40 is connected to the base 21, the dial indicator 30 is assembled to the second adjusting member 40, and the second adjusting member 40 can drive the dial indicator 30 to move towards or away from one end of the pump shaft.
In this embodiment, the second adjusting part 40 is connected to the base 21, and the second adjusting part 40 is further connected to the dial indicator 30, and the position of the dial indicator 30 relative to the pump shaft can be adjusted, so that the dial indicator 30 can accurately read the value of the pump shaft fine adjustment after the pump shaft is centered.
The second adjuster 40 may have the same or different configuration as the first adjuster 23, and the specific configuration is not illustrated.
As an alternative, as shown in fig. 3, the second adjusting member 40 includes a second screw 41, a second nut 42, and a second connecting block 43;
the second screw 41 passes through the second nut 42 and the base 21 to be connected to the second connection block 43, the dial indicator 30 is connected to the second connection block 43, and the second connection block 43 can rotate relative to the dial indicator 30.
In this embodiment, the second screw 41 is rotated to drive the dial indicator 30 to move toward the position of the pump shaft, and when the second screw 41 is rotated, the dial indicator 30 cannot rotate along with the rotation of the second screw 41 due to the arrangement of the second connecting block 43, so that the stability of the dial indicator 30 in the moving process is ensured.
Alternatively, all of the connecting structures 10 are symmetrically disposed about the centerline of the sealed chamber. This arrangement facilitates the adjustment of the position of the pump shaft by the adjustment structure 20 disposed on the connection structure 10.
As an alternative, the adjusting structures 20 on all the connecting structures 10 are symmetrically arranged. That is, a plurality of adjusting structures 20 are evenly distributed along the circumference of the pump shaft, so that when the position of the pump shaft is adjusted through the adjusting structures 20, the pump shaft can be adjusted to the centered position more quickly, and the adjusting efficiency is improved.
As an alternative, each of the connecting structures 10 is provided with at least three mounting holes 11 for connecting with the top of the sealing chamber, and the three mounting holes 11 are distributed at intervals along the extending direction of the connecting structure 10. The attachment structure 10 is secured to the enclosure by bolts through the mounting holes 11. Wherein the bolts pass through the base 21 to fix the base 21 to the sealed chamber when the connecting structure 10 is connected to the sealed chamber.
The connection structure 10 may also be mounted on the sealed chamber by other means, such as: by means of a snap-fit or plug-in connection.
The specific using steps when centering the pump body are as follows: a. the base 21 and the connecting structure 10 are fixedly arranged at the top of the sealed chamber by using bolts;
b. the positioning block 22 moves back and forth (i.e. in a direction close to or away from the pump shaft) by adjusting the first screw 231, so as to adjust the position of the pump shaft;
c. repeating the step b until the centering requirement is met;
d. the position of the dial indicator 30 is adjusted through the second screw rod 41, and a pump shaft fine adjustment value is read;
e. after the centering requirement is met, the first nut 232 is locked, and the dial indicator 30 is detached.
It will be apparent to those skilled in the art that various changes and modifications may be made 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 and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A pump body centering device, comprising: at least two connecting structures arranged on the top of the sealing chamber;
every all be equipped with two at least regulation structures on the connection structure, regulation structure be used for adjusting set up in the pump shaft position in the seal chamber, all regulation structure centers on the pump shaft evenly distributed, wherein, regulation structure with the contact surface of pump shaft is the arcwall face.
2. The pump body centering device of claim 1, wherein the adjustment structure comprises a base, a locating block, and a first adjustment member;
the base is mounted on the connecting structure, the first adjusting piece is used for connecting the positioning block to one side, facing the pump shaft, of the base, and the first adjusting piece can drive the positioning block to move towards or away from the pump shaft;
the surface of the positioning block, which is in contact with the pump shaft, is an arc-shaped surface.
3. The pump body centering device of claim 2, wherein the first adjusting member comprises a first screw, a first nut, and a first connecting block;
the first screw penetrates through the first nut and the base to be connected with the first connecting block arranged in the positioning block.
4. The pump body centering device of claim 3, wherein a side of the locating block facing the pump shaft is provided with a counterbore for mounting the first connecting block.
5. The pump body centering device of claim 2, further comprising a dial indicator coupled to the base, wherein the dial indicator is movable toward and away from a location where the pump shaft is located.
6. The pump body centering device of claim 5, further comprising a second adjusting member connected to said base, said dial indicator being mounted to said second adjusting member, said second adjusting member enabling said dial indicator to move toward or away from an end of said pump shaft.
7. The pump body centering device of claim 6, wherein the second adjusting member comprises a second screw, a second nut, and a second connecting block;
the second screw rod passes through the second nut and the base is connected with the second connecting block, the dial indicator is connected with the second connecting block, and the second connecting block can rotate relative to the dial indicator.
8. The pump body centering device of claim 1, wherein all of said connection structures are symmetrically disposed about a centerline of said seal chamber.
9. The pump body centering device of claim 1, wherein the adjustment structures on all of the connection structures are symmetrically disposed.
10. The pump body centering device of claim 1, wherein each of the connection structures is provided with at least three mounting holes for connecting with a top of the seal chamber, and the three mounting holes are spaced apart along an extending direction of the connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021573810.3U CN213298391U (en) | 2020-07-31 | 2020-07-31 | Pump body centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021573810.3U CN213298391U (en) | 2020-07-31 | 2020-07-31 | Pump body centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213298391U true CN213298391U (en) | 2021-05-28 |
Family
ID=76023459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021573810.3U Active CN213298391U (en) | 2020-07-31 | 2020-07-31 | Pump body centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298391U (en) |
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2020
- 2020-07-31 CN CN202021573810.3U patent/CN213298391U/en active Active
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