CN210240118U - Device for dismounting radial bearing at lower part of shielding main pump and fixing rotor - Google Patents
Device for dismounting radial bearing at lower part of shielding main pump and fixing rotor Download PDFInfo
- Publication number
- CN210240118U CN210240118U CN201921169192.3U CN201921169192U CN210240118U CN 210240118 U CN210240118 U CN 210240118U CN 201921169192 U CN201921169192 U CN 201921169192U CN 210240118 U CN210240118 U CN 210240118U
- Authority
- CN
- China
- Prior art keywords
- rotor
- plate
- foundatin plate
- pump
- radial bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A device for dismantling a radial bearing at the lower part of a shielding main pump and fixing a rotor belongs to the technical field of maintenance of shielding main pumps of nuclear power stations. The utility model discloses a foundatin plate, be used for connecting the foundatin plate support of foundatin plate and the pump body, be used for connecting foundatin plate and lower part journal bearing's stud and connect nut on stud, locate the lug on the foundatin plate to and be used for connecting the rotor supporting tool and the cushion of foundatin plate and pump shaft, be used for connecting the main bolt of foundatin plate and the pump body, be used for connecting the foundatin plate and hug closely the enhancement support of the pump body. The utility model discloses can realize the dismantlement of lower part journal bearing and loosing core of rotor subassembly high-efficiently steadily, avoid the damage of lower part journal bearing and rotor subassembly simultaneously.
Description
Technical Field
The utility model relates to a nuclear power station shielding formula main pump maintenance technical field especially relates to a be used for shielding main pump lower part journal bearing to demolish and rotor fixing device.
Background
After the nuclear power station runs for a long time, the possibility that other parts such as the thrust bearing and the shielding sleeve of the shielding main pump have problems is gradually increased. If the shielding sleeve is broken and needs to be disassembled for maintenance, the shielding main pump is hydrophobic, and the bulging phenomenon of the shielding sleeve is inevitably generated. The disassembly work of the shielding main pump is seriously influenced. Therefore, it is necessary to develop a shielded main pump overhaul process and tool in a highly radioactive environment. If the shielding sleeve is bulged, from the viewpoint of the disassembly process flow of the shielding main pump at present, the restriction factors are as follows: 1. lower radial bearing: as an important component of the canned main pump operation, and disassembling the lower radial bearing requires placing the canned main pump upside down. Because the radial clearance between the lower radial bearing and the stator of the shielding main pump is small, the lower radial bearing can not be normally disassembled after the bulge phenomenon occurs. 2. Core pulling of the rotor assembly: after the shielding sleeve bulges, particularly the bulge of the stator shielding sleeve between the lower radial bearing of the shielding main pump and the rotor winding seriously hinders the core pulling of the rotor assembly, so that the rotor assembly can only be pulled out from the direction of the impeller, and the conventional rotor locking device is arranged at the impeller end of the shielding main pump, so that the core pulling of the rotating assembly is difficult to carry out.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that above-mentioned prior art exists, provide a be used for shielding main pump lower part journal bearing and demolish and rotor fixing device, its dismantlement and the loosing core of rotor subassembly that can realize lower part journal bearing steadily high-efficiently, avoid the damage of lower part journal bearing and rotor subassembly simultaneously.
The utility model aims at realizing through the following technical scheme:
the utility model provides a be used for shielding main pump lower part journal bearing to demolish and rotor fixing device, includes the foundatin plate, is used for connecting the foundatin plate support of foundatin plate and the pump body, be used for connecting foundatin plate and lower part journal bearing's stud and connect in nut on the stud, locate lug on the foundatin plate, and be used for connecting the rotor supporting tool and the cushion of foundatin plate and pump shaft, be used for connecting the main bolt of foundatin plate and the pump body, be used for connecting the foundatin plate is hugged closely the enhancement support of the pump body.
The use principle is as follows: the rotor assembly is locked from the impeller end of the shielding main pump by adopting the existing locking device in advance, the rotor assembly is prevented from being damaged due to accidental sliding, and then the shielding main pump is placed on the existing inverted bracket in an inverted mode, so that the device is convenient to install and operate.
When dismantling lower part journal bearing, through lifting by crane the lug on instrument and the foundatin plate, move the foundatin plate to pump body top to it is fixed, specific connected mode to connect foundatin plate and the pump body through a plurality of foundatin plate supports: the outer diameter of the foundation plate support is larger than that of the main bolt hole, a threaded hole is formed in the upper portion of the foundation plate support, and bolts sequentially penetrate through the gasket, the foundation plate and the foundation plate support and the flange bolt holes supported on the pump body. The connection process of the foundation plate and the pump body is ensured, the screw rod holes in the foundation plate and the bolt holes in the lower radial bearing are kept in corresponding and concentric relation, and then a plurality of double-head screw rods respectively penetrate through the screw rod holes in the foundation plate and are in threaded connection with the lower radial bearing. And finally, uniformly rotating the nuts on the plurality of double-head screw rods, so that the double-head screw rods drive the lower radial bearing (together with the upper thrust bearing) to gradually rise until the lower radial bearing is pulled out of the pump body, and transferring the bearing to a target position with the help of a lifting tool and dismantling the device.
When carrying out the rotor subassembly and loosing core, through lifting by crane the lug on instrument and the foundatin plate, move the foundatin plate to pump body top to connect foundatin plate and pump shaft through rotor supporting tool, cushion and bolt, concrete connected mode: one end of the rotor supporting tool is in a shape matched with the pump shaft, a through hole matched with a bolt hole in the pump shaft is formed in the rotor supporting tool, and the rotor supporting tool and the pump shaft are connected through bolts to prevent the pump shaft and the rotor assembly from accidentally sliding off when the whole pump body is subsequently turned; the other end of the rotor supporting tool is provided with a threaded hole, and a bolt sequentially penetrates through the cushion block and the foundation plate and then is fixedly connected with the threaded hole of the rotor supporting tool. And then, a plurality of main bolts penetrate through holes in the foundation plate and are connected with flange bolt holes in the pump body, a plurality of reinforcing supports are arranged between the foundation plate and the pump body, one end of each reinforcing support is fixedly connected with the foundation plate through bolts, and the other end of each reinforcing support is tightly attached to the pump body. Then the whole shielding main pump is turned over and is placed on the existing upright support, the locking device of the rotor assembly at the impeller end is disassembled, a plurality of bolts for connecting the rotor supporting tool and the pump shaft are disassembled, and finally the core pulling of the rotor assembly is carried out from the upper side.
As the utility model discloses it is preferred, the external diameter of foundatin plate support is greater than the diameter of flange bolt hole on the pump body. To ensure the supporting function of the foundation plate support.
As the utility model discloses it is preferred, the foundatin plate support has four, the equipartition in foundatin plate both sides. The structure is stressed evenly, and the whole mounting structure is stable and reliable.
As the utility model discloses it is preferred, the double-end lead screw has four of equipartition, corresponds the screw hole on the radial bearing of lower part respectively. The structure is even in stress, and the bearing dismounting work is more stable and reliable.
As the utility model discloses it is preferred, the lug has four, the equipartition in on the foundatin plate. The structure is even in stress, and stability and safety when the foundation plate is lifted and transferred are guaranteed.
As the utility model discloses it is preferred, the rotor supporting tool includes support column and brace table, be equipped with the connection in the support column the bolt hole of foundatin plate, be equipped with the through-hole of a plurality of cooperation pump epaxial bolt holes on the brace table. The structure is convenient for installation and connection, and the connection stability is high.
As the utility model discloses it is preferred, strengthen the support and include spliced pole and supporting shoe, be equipped with the connection in the spliced pole the bolt hole of foundatin plate. The supporting stability of strengthening the support has further been improved to the setting of supporting shoe.
The utility model has the advantages that: after the bulge phenomenon occurs to the shielding main pump, the disassembly of the lower radial bearing and the core pulling of the rotor assembly can be accurately completed, meanwhile, the damage to the stator chamber and the rotor assembly of the shielding main pump is avoided, and the overhauling quality and efficiency are greatly improved.
Drawings
FIG. 1 is a view showing a state of the present invention in use when the lower radial bearing is removed;
fig. 2 is the utility model discloses service condition when carrying out the rotor subassembly and loosing core is illustrated.
1-a foundation plate; 2-a pump body; 3-a foundation plate support; 4-lower radial bearing; 5-double-end screw rod; 6-a nut; 7-lifting lugs; 8-a pump shaft; 9-a rotor support tool; 10-cushion block; 11-a main bolt; 12-reinforcing the support.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a be used for shielding main pump lower part journal bearing to demolish and rotor fixing device, includes foundatin plate 1, is used for connecting foundatin plate support 3 of foundatin plate 1 and the pump body 2, be used for connecting foundatin plate 1 and lower part journal bearing 4's stud 5 and connect in nut 6 on the stud 5, locate lug 7 on the foundatin plate 1, and be used for connecting the rotor supporting tool 9 and the cushion 10 of foundatin plate 1 and pump shaft 8, be used for connecting the main bolt 11 of foundatin plate 1 and the pump body 2, be used for connecting the foundation plate 1 is hugged closely the enhancement support 12 of the pump body 2.
Specifically, the external diameter of foundatin plate support 3 is greater than the diameter of flange bolt hole on the pump body 2. The foundation plate supports 3 are four and evenly distributed on two sides of the foundation plate 1. The double-end screw rod 5 is provided with four uniformly distributed screw holes which respectively correspond to the threaded holes on the lower radial bearing 4. The lifting lugs 7 are four and are uniformly distributed on the foundation plate 1. Rotor supporting tool 9 includes support column and brace table, be equipped with in the support column and connect the bolt hole of foundatin plate, be equipped with the through-hole of bolt hole on a plurality of cooperation pump shafts on the brace table. The reinforcing support 12 comprises a connecting column and a supporting block, and a bolt hole for connecting the foundation plate is formed in the connecting column.
In summary, the usage principle of the device is as follows: the rotor assembly is locked from the impeller end of the shielding main pump by adopting the existing locking device in advance, the rotor assembly is prevented from being damaged due to accidental sliding, and then the shielding main pump is placed on the existing inverted bracket in an inverted mode, so that the device is convenient to install and operate.
When dismantling lower part journal bearing, through lifting by crane the lug on instrument and the foundatin plate, move the foundatin plate to pump body top to it is fixed, specific connected mode to connect foundatin plate and the pump body through a plurality of foundatin plate supports: the outer diameter of the foundation plate support is larger than that of the main bolt hole, a threaded hole is formed above the foundation plate support, and bolts sequentially penetrate through the gasket, the foundation plate and the foundation plate support and support the flange bolt holes in the pump body. The connection process of the foundation plate and the pump body is ensured, the screw rod holes in the foundation plate and the bolt holes in the lower radial bearing are kept in corresponding and concentric relation, and then a plurality of double-head screw rods respectively penetrate through the screw rod holes in the foundation plate and are in threaded connection with the lower radial bearing. And finally, uniformly rotating the nuts on the plurality of double-head screw rods, so that the double-head screw rods drive the lower radial bearing (together with the upper thrust bearing) to gradually rise until the lower radial bearing is pulled out of the pump body, and transferring the bearing to a target position with the help of a lifting tool and dismantling the device.
When carrying out the rotor subassembly and loosing core, through lifting by crane the lug on instrument and the foundatin plate, move the foundatin plate to pump body top to connect foundatin plate and pump shaft through rotor supporting tool, cushion and bolt, concrete connected mode: one end of the rotor supporting tool is in a shape matched with the pump shaft, a through hole matched with a bolt hole in the pump shaft is formed in the rotor supporting tool, and the rotor supporting tool and the pump shaft are connected through bolts to prevent the pump shaft and the rotor assembly from accidentally sliding off when the whole pump body is subsequently turned; the other end of the rotor supporting tool is provided with a threaded hole, and a bolt sequentially penetrates through the cushion block and the foundation plate and then is fixedly connected with the threaded hole of the rotor supporting tool. And then, 4 main bolts penetrate through holes in the foundation plate and are connected with flange bolt holes in the pump body, a plurality of reinforcing supports are arranged between the foundation plate and the pump body, one end of each reinforcing support is fixedly connected with the foundation plate through bolts, and the other end of each reinforcing support is tightly attached to the pump body. Then the whole shielding main pump is overturned and is placed on the existing upright support, namely, one end provided with the device is positioned below, the rotor assembly locking device which is arranged at the impeller end in advance is disassembled, a plurality of bolts which are connected with the rotor supporting tool and the pump shaft are disassembled, and finally the core pulling of the rotor assembly is carried out from the upper side.
The above description is only the specific embodiment of the preferred embodiment of the present invention, and this specific embodiment is based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a be used for shielding main pump lower part journal bearing to demolish and rotor fixing device, a serial communication port, include the foundatin plate, be used for connecting the foundatin plate support of foundatin plate and the pump body, be used for connecting foundatin plate and lower part journal bearing's stud and connect in nut on the stud, locate lug on the foundatin plate, and be used for connecting the rotor supporting tool and the cushion of foundatin plate and pump shaft, be used for connecting the main bolt of foundatin plate and the pump body, be used for connecting the foundatin plate is hugged closely the enhancement support of the pump body.
2. The apparatus of claim 1, wherein the outer diameter of the base plate support is larger than the diameter of the flange bolt hole on the pump body.
3. The device for shielding the removal of the lower radial bearing of the main pump and the fixing of the rotor as recited in claim 1, wherein the foundation plate supports have four, evenly distributed on both sides of the foundation plate.
4. The device for shielding the removal of the lower radial bearing of the main pump and fixing the rotor as claimed in claim 1, wherein the double-headed screw rod has four uniformly distributed holes corresponding to the screw holes of the lower radial bearing.
5. The device for shielding the removal of the lower radial bearing of the main pump and the fixing of the rotor as recited in claim 1, wherein said lifting lugs are four and are uniformly distributed on said base plate.
6. The device for shielding the removal of the radial bearing at the lower part of the main pump and fixing the rotor as claimed in claim 1, wherein the rotor supporting tool comprises a supporting column and a supporting platform, the supporting column is internally provided with a bolt hole for connecting the foundation plate, and the supporting platform is provided with a plurality of through holes for matching with the bolt hole on the pump shaft.
7. The device for shielding the removal of the lower radial bearing of the main pump and fixing the rotor as claimed in claim 1, wherein the reinforcing support comprises a connecting column and a supporting block, and a bolt hole for connecting the foundation plate is formed in the connecting column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169192.3U CN210240118U (en) | 2019-07-24 | 2019-07-24 | Device for dismounting radial bearing at lower part of shielding main pump and fixing rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169192.3U CN210240118U (en) | 2019-07-24 | 2019-07-24 | Device for dismounting radial bearing at lower part of shielding main pump and fixing rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240118U true CN210240118U (en) | 2020-04-03 |
Family
ID=69992530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921169192.3U Active CN210240118U (en) | 2019-07-24 | 2019-07-24 | Device for dismounting radial bearing at lower part of shielding main pump and fixing rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210240118U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649007A (en) * | 2020-06-09 | 2020-09-11 | 三门核电有限公司 | Large-scale shielding main pump disassembling device and disassembling process in radioactive environment |
| CN113478431A (en) * | 2021-07-22 | 2021-10-08 | 哈尔滨电气动力装备有限公司 | Large-scale shielding motor thrust disc nut mounting and locking process |
-
2019
- 2019-07-24 CN CN201921169192.3U patent/CN210240118U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649007A (en) * | 2020-06-09 | 2020-09-11 | 三门核电有限公司 | Large-scale shielding main pump disassembling device and disassembling process in radioactive environment |
| CN111649007B (en) * | 2020-06-09 | 2021-07-02 | 三门核电有限公司 | Large-scale shielding main pump disassembling device and disassembling process in radioactive environment |
| CN113478431A (en) * | 2021-07-22 | 2021-10-08 | 哈尔滨电气动力装备有限公司 | Large-scale shielding motor thrust disc nut mounting and locking process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210240118U (en) | Device for dismounting radial bearing at lower part of shielding main pump and fixing rotor | |
| US9627949B2 (en) | Method of vertically assembling a generator of a wind turbine | |
| KR20150118190A (en) | Method and apparatus for removal and replacement of a wound stator core | |
| CN109854527B (en) | Locking shielding tool for shielding main pump | |
| CN111977500B (en) | Dismounting hanger device and dismounting method for nuclear power station main pump seal static ring assembly | |
| CN211306195U (en) | Vertical hydroelectric set main shaft flange dismounting device | |
| CN211388602U (en) | Auxiliary dismounting device for lower stator end cover of shielding main pump | |
| CN209145778U (en) | A kind of wind generator unit wheel hub installation and transportation device | |
| KR20140094852A (en) | For the installation of a wind power generator using marine equipment | |
| CN113334312A (en) | Tool and method for disassembling blind plate of reactor control rod driving mechanism | |
| CN221020828U (en) | Movable guide vane crank arm dismantling device | |
| CN216997293U (en) | Annular protection lifting appliance for fan tower cylinder | |
| CN221015702U (en) | Magnetic stirring outer magnetic rotor anti-jumping device | |
| CN102223038A (en) | Flange-less machine base for brushless synchronous power generator | |
| CN211737581U (en) | Single-stage vertical centrifugal pump dismounting bracket | |
| CN220078298U (en) | Double-bridge machine stator hoisting device for hydropower house | |
| CN219705009U (en) | Lower frame lifting tool nut mounting device | |
| CN215826924U (en) | Rotary table of connecting cylinder structure | |
| CN208631961U (en) | Horizontal permanent-magnetic synchronizes submersible motor kludge experimental rig | |
| CN217413847U (en) | Disassembly tool for guide vane shaft head | |
| CN217943204U (en) | Movable support suitable for multistage deep-well pump shaft coupling dismouting | |
| CN117885060B (en) | Single-row tapered roller wind power main shaft bearing installation tool and installation method | |
| CN211034886U (en) | Portable shielding main pump kingbolt lifting device | |
| CN211623797U (en) | Hoisting and lifting structure for large submersible axial flow pump | |
| CN214924067U (en) | Bearing bush disassembling tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |