CN113400246B - Installation and disassembly process of lower guide bearing fixing ring of main shaft seal pump of nuclear power station - Google Patents
Installation and disassembly process of lower guide bearing fixing ring of main shaft seal pump of nuclear power station Download PDFInfo
- Publication number
- CN113400246B CN113400246B CN202110793523.6A CN202110793523A CN113400246B CN 113400246 B CN113400246 B CN 113400246B CN 202110793523 A CN202110793523 A CN 202110793523A CN 113400246 B CN113400246 B CN 113400246B
- Authority
- CN
- China
- Prior art keywords
- lower guide
- guide bearing
- mounting
- ring
- fixing ring
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The special tool is of a vertical structure and comprises a fixing device (1), an inner hexagon bolt pre-tightening tool (2), a fixing sleeve ring (3) and a mounting pipe (4). The lower guide bearing fixing ring (5) and the mounting pipe (4) are assembled together by adopting the fixing device (1) outside the pump body, the lower guide bearing fixing ring and the mounting pipe are matched to be positioned by adopting a spigot, the gap is 0.02mm, the mounting tool and the lower guide bearing fixing ring (5) are installed in the pump body by adopting a crane, in order to ensure the mounting precision, the guide vane (6) is prevented from being collided and abraded, the inner hexagon bolt pre-tightening tool (2) is fixed by adopting the fixing sleeve ring (3), and the torque wrench transmits torque to the waisted bolt (7) through the fixing inner hexagon bolt pre-tightening tool (2), so that the locking torque for installing the waisted bolt (7) is achieved, and the accurate positioning and installation of the lower guide bearing fixing ring are ensured.
Description
The technical field is as follows:
the invention relates to a process for mounting and dismounting a lower guide bearing fixing ring of a shaft seal main pump in a nuclear power station.
The background art comprises the following steps:
the shaft-sealed nuclear main pump is one of the most critical nuclear island main devices in a loop system of a nuclear power station, and represents the highest level of design and manufacture of the current pump products, wherein the lower guide bearing is a key part of a shaft seal pump, the lower guide bearing fixing ring is used for fixing the lower guide bearing of the nuclear main pump, the installation precision of the lower guide bearing fixing ring directly influences the operation vibration value of the whole nuclear main pump, at present, various installation and disassembly modes are available at home and abroad, but in actual operation, a special tool is lacked, the whole installation process is complex, not only the time consumption is long, but also the accurate installation is difficult, the phenomena of clamping stagnation, part collision and grinding damage are easy to occur in the assembly process, and the lower guide bearing fixing ring is required to be installed at the lowest end of the whole main pump body, the installation depth is large, and the installation is very difficult.
The invention content is as follows:
the invention aims to provide a process for mounting and dismounting a lower guide bearing fixing ring of a shaft seal main pump in a nuclear power station, which solves the problem that a torque wrench cannot fasten bolts due to large mounting depth, and prevents the problems of clamping stagnation and grinding damage caused by small mounting clearance of the lower guide bearing fixing ring (5).
The technical scheme of the invention is as follows: the utility model provides a solid fixed ring's of leading bearing installation and dismantlement technology under nuclear power station bearing seal main pump, by fixing device (1), hexagon socket head cap screw pretension instrument (2), the fixed lantern ring (3), one set of mounting tool is constituteed in installation pipe (4), mounting tool is vertical structure, adopt fixing device (1) to lead solid fixed ring of bearing (5) and installation pipe (4) to assemble together down at the pump body, adopt the crane with mounting tool and lead solid fixed ring of bearing (5) down pack into the pump body in, adopt fixed lantern ring (3) fixed hexagon socket head cap screw pretension instrument (2), torque wrench passes through fixed hexagon socket head cap screw pretension instrument (2) transmission moment of torsion and gives waist-contracting bolt (7), thereby reach the locking moment of torsion of waist-contracting bolt (7) installation, this set of mounting tool has guaranteed the accurate positioning and the installation of leading solid fixed ring of bearing (5) down, including following step:
1) Firstly, a mounting tube (4) is placed on a lower guide bearing fixing ring (5) outside a pump body, the top of the mounting tube (4) is installed into a fixing device (1), a lower bolt of the fixing device (1) is screwed into the lower guide bearing fixing ring (5), and thus the lower guide bearing fixing ring (5) is fixed to the lower part of the mounting tube (4) in a threaded connection mode;
2) After the fixed lantern ring (3) is arranged in the hexagon socket head cap screw pre-tightening tool (2), the hexagon socket head cap screw pre-tightening tool (2) is arranged in the installation pipe (4);
3) Hoisting the fixing device (1), the inner hexagon bolt pre-tightening tool (2), the fixed lantern ring (3), the mounting pipe (4) and the lower guide bearing fixing ring (5) by using a crane, adjusting the levelness of the mounting pipe (4) to 0.02mm/m, and slowly placing the lower guide bearing fixing ring (5) into the pump body;
4) A torque wrench is placed at the top of the inner hexagon bolt pre-tightening tool (2), the inner hexagon bolt pre-tightening tool (2) is rotated, the lower part of the inner hexagon bolt pre-tightening tool (2) is connected with the waist bolt (7) in an inner hexagon mode, torque is transmitted through the inner hexagon bolt pre-tightening tool (2), the waist bolt (7) fixes the lower guide bearing fixing ring (5) and the guide vane (6), and the locking torque value is 201.0Nm;
5) Loosening the fixing device (1), hoisting the fixing device (1), the inner hexagon bolt pre-tightening tool (2), the fixing sleeve ring (3) and the mounting pipe (4) by using a crane, moving out of the main pump, and finishing mounting;
the installation of the shaft seal type main pump lower guide bearing fixing ring is in a cavity, and the installation depth dimension reaches 1734mm.
The invention has the technical effects that:
the mounting device is characterized in that 1) the shaft seal type main pump lower guide bearing fixing ring is mounted in a cavity, the mounting depth size reaches 1734mm, the mounting is very difficult, the mounting gap is only 0.02mm, and the collision is easy to occur.
2) According to the invention, the torque of the torque wrench is transmitted to the waisted bolt (7) through the inner hexagon bolt pre-tightening tool (2), so that the torque value of the waisted bolt (7) reaches a safe locking torque value, the problem that whether the waisted bolt (7) is firmly installed or not is determined only by the experience of an operator is eliminated, and the difficulty that the torque wrench cannot tighten the bolt due to large installation depth is solved;
3) According to the invention, the fixing device (1) is adopted to fix the lower guide bearing fixing ring (5) on the mounting pipe (4), so that the problems of fixing of parts with large mounting depth and large size and difficulty in dismounting the fixing tool after mounting are solved, and the tool is simple to operate;
4) The coaxiality of the upper spigot and the lower spigot of the tool mounting tube (4) is 0.02mm, the sizes of the upper spigot and the lower spigot are actually matched according to the sizes of the spigot of the lower guide bearing fixing ring (5) and the sealing chamber (8), and the matching gap is ensured to be 0.02mm, so that the coaxiality of the lower guide bearing fixing ring (5) and the sealing chamber (8) is ensured, and the problems of clamping stagnation and grinding damage caused by small mounting gap of the lower guide bearing fixing ring (5) are prevented.
5) The tool can also be used for disassembling the lower guide bearing fixing ring during the maintenance of a nuclear power station.
Description of the drawings:
FIG. 1 is a schematic view of the mounting of a lower guide bearing retainer ring
The specific implementation mode is as follows:
as shown in fig. 1, a fixed ring's of leading bearing installation and dismantlement technology under nuclear power station bearing seal main pump, by fixing device 1, hexagon socket head cap nut pretension instrument 2, the fixed lantern ring 3, a set of mounting tool is constituteed to installation pipe 4, the mounting tool is vertical structure, adopt fixing device 1 to assemble together with fixed ring 5 of leading bearing down with installation pipe 4 outside the pump body, adopt the crane with the fixed ring 5 of leading bearing down pack into the pump body, adopt the fixed hexagon socket head cap nut pretension instrument 2 of the fixed lantern ring 3 fixed, torque wrench passes through fixed hexagon socket head cap nut pretension instrument 2 transmission moment of torsion for waist bolt 7, thereby reach the locking moment of torsion of waist bolt 7 installation, this set of mounting tool has guaranteed the accurate positioning and the installation of the fixed ring 5 of leading bearing down, including following step:
1) Firstly, the mounting tube 4 is placed on the lower guide bearing fixing ring 5 outside the pump body, the top of the mounting tube 4 is installed into the fixing device 1, the lower bolt of the fixing device 1 is screwed into the lower guide bearing fixing ring 5, and thus the lower guide bearing fixing ring 5 is fixed to the lower part of the mounting tube 4 in a threaded connection mode;
2) After the fixed lantern ring 3 is arranged in the hexagon socket head cap screw pre-tightening tool 2, the hexagon socket head cap screw pre-tightening tool 2 is arranged in the installation pipe 4;
3) Hoisting the fixing device 1, the inner hexagon bolt pre-tightening tool 2, the fixed lantern ring 3, the mounting tube 4 and the lower guide bearing fixing ring 5 together by using a crane, adjusting the levelness of the mounting tube 4 to 0.02mm/m, and slowly placing the lower guide bearing fixing ring 5 into the pump body; the coaxiality of the upper spigot and the lower spigot of the mounting tube 4 is 0.02mm, the sizes of the upper spigot and the lower spigot are actually matched according to the sizes of the spigots of the lower guide bearing fixing ring 5 and the sealing chamber 8, and the matching gap is ensured to be 0.02mm, so that the mounting coaxiality of the lower guide bearing fixing ring 5 and the sealing chamber 8 is ensured, and the problems of clamping stagnation and grinding damage caused by the small mounting gap of the lower guide bearing fixing ring 5 are prevented;
4) Placing a torque wrench at the top of the inner hexagon bolt pre-tightening tool 2, rotating the inner hexagon bolt pre-tightening tool 2, connecting the lower part of the inner hexagon bolt pre-tightening tool 2 and the waisted bolt 7 in an inner hexagon manner, transmitting torque through the inner hexagon bolt pre-tightening tool 2, and enabling the waisted bolt 7 to fix the lower guide bearing fixing ring 5 and the guide vane 6, wherein the locking torque value is 201.0Nm;
5) And (3) loosening the fixing device 1, hoisting the fixing device 1, the hexagon socket head cap screw pre-tightening tool 2, the fixing sleeve ring 3 and the mounting pipe 4 by using a crane, moving out of the main pump, and finishing mounting.
The installation of bearing seal formula main pump lower guide bearing solid fixed ring is the installation in the cavity, and the installation degree of depth size has reached 1734mm.
Claims (1)
1. The installation and disassembly process of the lower guide bearing fixing ring of the shaft seal main pump of the nuclear power station is characterized in that: by fixing device (1), hexagon socket head cap screw pretension instrument (2), the fixed lantern ring (3), one set of mounting tool is constituteed in installation pipe (4), the mounting tool is vertical structure, adopt fixing device (1) to lead solid fixed ring of bearing (5) and installation pipe (4) to assemble together down at the pump body, adopt the crane with mounting tool and lead solid fixed ring of bearing (5) down pack into the pump body in, adopt fixed lantern ring (3) fixed hexagon socket head cap screw pretension instrument (2), torque wrench passes through fixed hexagon socket head cap screw pretension instrument (2) transmission moment of torsion for waisting bolt (7), thereby reach the locking moment of torsion of waisting bolt (7) installation, this set of mounting tool has guaranteed the accurate positioning and the installation of leading solid fixed ring of bearing (5) down, including following step:
1) Firstly, a mounting tube (4) is placed on a lower guide bearing fixing ring (5) outside a pump body, the top of the mounting tube (4) is installed into a fixing device (1), a lower bolt of the fixing device (1) is screwed into the lower guide bearing fixing ring (5), and thus the lower guide bearing fixing ring (5) is fixed to the lower part of the mounting tube (4) in a threaded connection mode;
2) After the fixed lantern ring (3) is arranged in the inner hexagon bolt pre-tightening tool (2), the inner hexagon bolt pre-tightening tool (2) is arranged in the installation pipe (4);
3) Hoisting the fixing device (1), the inner hexagon bolt pre-tightening tool (2), the fixed lantern ring (3), the mounting pipe (4) and the lower guide bearing fixing ring (5) together by using a crane, adjusting the levelness of the mounting pipe (4) to 0.02mm/m, and slowly placing the lower guide bearing fixing ring (5) into the pump body; the coaxiality of the upper spigot and the lower spigot of the mounting pipe (4) is 0.02mm, the sizes of the upper spigot and the lower spigot are actually matched according to the sizes of the spigot of the lower guide bearing fixing ring (5) and the sealing chamber (8), and the fit clearance is ensured to be 0.02mm, so that the mounting coaxiality of the lower guide bearing fixing ring (5) and the sealing chamber (8) is ensured, and the problems of clamping stagnation and grinding damage caused by small mounting clearance of the lower guide bearing fixing ring (5) are prevented;
4) A torque wrench is placed at the top of the inner hexagon bolt pre-tightening tool (2), the inner hexagon bolt pre-tightening tool (2) is rotated, the lower part of the inner hexagon bolt pre-tightening tool (2) is connected with the waist bolt (7) in an inner hexagon mode, torque is transmitted through the inner hexagon bolt pre-tightening tool (2), the waist bolt (7) fixes the lower guide bearing fixing ring (5) and the guide vane (6), and the locking torque value is 201.0Nm;
5) Loosening the fixing device (1), hoisting the fixing device (1), the inner hexagon bolt pre-tightening tool (2), the fixing sleeve ring (3) and the mounting pipe (4) by using a crane, moving out of the main pump, and finishing mounting;
the installation of the shaft seal type main pump lower guide bearing fixing ring is in a cavity, and the installation depth dimension reaches 1734mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110793523.6A CN113400246B (en) | 2021-07-14 | 2021-07-14 | Installation and disassembly process of lower guide bearing fixing ring of main shaft seal pump of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110793523.6A CN113400246B (en) | 2021-07-14 | 2021-07-14 | Installation and disassembly process of lower guide bearing fixing ring of main shaft seal pump of nuclear power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113400246A CN113400246A (en) | 2021-09-17 |
| CN113400246B true CN113400246B (en) | 2022-10-11 |
Family
ID=77686244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110793523.6A Active CN113400246B (en) | 2021-07-14 | 2021-07-14 | Installation and disassembly process of lower guide bearing fixing ring of main shaft seal pump of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113400246B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193151B (en) * | 2021-11-17 | 2023-05-12 | 中核检修有限公司 | Bearing guide ring mounting method and bearing guide ring mounting mechanism |
| CN114378567A (en) * | 2021-12-17 | 2022-04-22 | 哈尔滨电气动力装备有限公司 | Nuclear main pump bearing guide ring installation process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465215A (en) * | 2013-09-27 | 2013-12-25 | 哈尔滨电气动力装备有限公司 | Tool for dismounting and mounting main shaft seal of main pump of 300MW nuclear power station |
| CN205519802U (en) * | 2016-04-08 | 2016-08-31 | 贵州遵义驰宇精密机电制造有限公司 | A frock clamp for thread processing on unmanned aerial vehicle end cover |
| CN205734782U (en) * | 2016-04-29 | 2016-11-30 | 天津职业技术师范大学 | Workbench disassembled by plunger displacement pump |
| CN205799370U (en) * | 2016-06-20 | 2016-12-14 | 上海电气凯士比核电泵阀有限公司 | Steering tool is protected for dismounting the support of parts on shaft |
| CN111637085A (en) * | 2020-06-08 | 2020-09-08 | 哈尔滨电气动力装备有限公司 | Installation process of nuclear reactor coolant pump shaft sleeve |
| CN111660085A (en) * | 2020-06-16 | 2020-09-15 | 中国航发航空科技股份有限公司 | Assembling device for connecting nut in narrow space of high-pressure rotor of engine and operation method |
| CN211759722U (en) * | 2020-02-17 | 2020-10-27 | 青海盐湖工业股份有限公司 | Scraper bolt dismounting tool for caustic soda flake machine |
| CN212311872U (en) * | 2020-06-02 | 2021-01-08 | 宿州市胜辉塑业有限公司 | Dismounting and mounting equipment for inner and outer die of corrugated pipe |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9789592B2 (en) * | 2014-10-03 | 2017-10-17 | Vcc Structures, Inc. | Rotary tool |
| CN210476782U (en) * | 2019-04-02 | 2020-05-08 | 北京博创惠众环保科技有限公司 | Bearing fixing ring dismounting tool |
| CN110842852B (en) * | 2019-11-20 | 2021-01-15 | 三门核电有限公司 | Tool and method for dismounting coupling in narrow space of large submerged long-axis pump |
-
2021
- 2021-07-14 CN CN202110793523.6A patent/CN113400246B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465215A (en) * | 2013-09-27 | 2013-12-25 | 哈尔滨电气动力装备有限公司 | Tool for dismounting and mounting main shaft seal of main pump of 300MW nuclear power station |
| CN205519802U (en) * | 2016-04-08 | 2016-08-31 | 贵州遵义驰宇精密机电制造有限公司 | A frock clamp for thread processing on unmanned aerial vehicle end cover |
| CN205734782U (en) * | 2016-04-29 | 2016-11-30 | 天津职业技术师范大学 | Workbench disassembled by plunger displacement pump |
| CN205799370U (en) * | 2016-06-20 | 2016-12-14 | 上海电气凯士比核电泵阀有限公司 | Steering tool is protected for dismounting the support of parts on shaft |
| CN211759722U (en) * | 2020-02-17 | 2020-10-27 | 青海盐湖工业股份有限公司 | Scraper bolt dismounting tool for caustic soda flake machine |
| CN212311872U (en) * | 2020-06-02 | 2021-01-08 | 宿州市胜辉塑业有限公司 | Dismounting and mounting equipment for inner and outer die of corrugated pipe |
| CN111637085A (en) * | 2020-06-08 | 2020-09-08 | 哈尔滨电气动力装备有限公司 | Installation process of nuclear reactor coolant pump shaft sleeve |
| CN111660085A (en) * | 2020-06-16 | 2020-09-15 | 中国航发航空科技股份有限公司 | Assembling device for connecting nut in narrow space of high-pressure rotor of engine and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113400246A (en) | 2021-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113400246B (en) | Installation and disassembly process of lower guide bearing fixing ring of main shaft seal pump of nuclear power station | |
| CN110285955B (en) | Device and method for detecting loosening of bolts and nuts of top cover of water turbine unit | |
| CN203352373U (en) | Transmission system electromechanical connecting device | |
| CN111975290B (en) | Nuclear power main pump impeller mounting process | |
| CN103759073B (en) | A kind of integral type level pipe jointer | |
| CN115338777A (en) | Polishing grinding head driving device and polishing machine | |
| CN203756995U (en) | Feeding sealing device of ball grinding mill | |
| CN213004463U (en) | Valve grinding device with grinding rod centering function | |
| CN205412793U (en) | Just, reassembling type drilling fluid agitator | |
| CN111906685A (en) | A grinder for narrow and small space | |
| CN107707085B (en) | Electric jigger device of primary pump motor of primary loop of reactor | |
| CN217914741U (en) | Polishing grinding head driving device and polishing machine | |
| CN111002268A (en) | Automatic screw up gondola water faucet lid device | |
| CN215318448U (en) | Automatically controlled pump shaft end flange dismounting device | |
| CN105618866A (en) | Rotary location type gear shaft gear tooth end chamfering grinding processing device | |
| CN212584487U (en) | Flange fast-assembling device | |
| CN210731664U (en) | Accurate alignment frock of square body hydro-cylinder clamping | |
| CN210500001U (en) | Mining multifunctional wrench | |
| CN207788177U (en) | A kind of shaft assembled speed reducer press mounting tool | |
| CN114542215A (en) | Portable dismouting location structure for cylindric cylinder | |
| CN217777390U (en) | Quick-release drill bit | |
| CN211231403U (en) | Lead screw mounting structure of inertial capacity rubber composite shock absorber | |
| CN221582986U (en) | Grinding device for repairing double shoulder surfaces of external threads of drill rod | |
| CN220029919U (en) | Tool for centering operation of centrifugal pump shaft | |
| CN203955086U (en) | A kind of flat slurry mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |