CN113526323B - Nuclear main pump multi-component combined hoisting method - Google Patents
Nuclear main pump multi-component combined hoisting method Download PDFInfo
- Publication number
- CN113526323B CN113526323B CN202110747045.5A CN202110747045A CN113526323B CN 113526323 B CN113526323 B CN 113526323B CN 202110747045 A CN202110747045 A CN 202110747045A CN 113526323 B CN113526323 B CN 113526323B
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- China
- Prior art keywords
- pump shaft
- hoisting
- shaft
- pump
- sealing chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a multi-component combined hoisting method for a nuclear main pump, wherein a hoisting disc (3) is installed on a seal chamber (1), a shaft support (5) is installed on a pump shaft (2), and the shaft support (5) and the hoisting disc (3) are connected, so that the seal chamber (1) and the pump shaft (2) are integrated. The shaft support (5) completes the radial positioning of the seal chamber (1) and the pump shaft (2). The invention has the advantages that the sealing chamber and the pump shaft are integrally moved and transferred by hoisting with the crown block, the coaxiality of the pump shaft and the sealing chamber in the hoisting process is ensured, accidents caused by displacement of the pump shaft in the hoisting process are avoided, meanwhile, a plurality of parts are hoisted, the working efficiency is improved, the accuracy and the convenience of part positioning are ensured, the operation is simple and convenient, the practical effect is good, and the expected effect of nuclear power main pump installation is achieved.
Description
The technical field is as follows:
the invention relates to a multi-component combined hoisting method for a nuclear main pump.
Background art:
the seal chamber and the pump shaft are nuclear primary components of the nuclear main pump, wherein the seal chamber is a nuclear primary pressure-bearing component, so that no grinding and scratch can be caused in the assembling and hoisting process, the nuclear main pump needs two parts to fall into the pump shell simultaneously in the installation process, and the pump shaft and the seal chamber cannot generate relative displacement in the process, so that the coaxiality of the pump shaft and the seal chamber is ensured, and the high-precision assembling and hoisting is completed. At present, the nuclear main pump has no precedent made in China, no experience can be used for reference, and a set of reasonable multi-component combined hoisting device is invented by continuous exploration and research.
The invention content is as follows:
the invention aims to provide a nuclear main pump multi-component combined hoisting method which can prevent two parts from generating relative displacement in a hoisting process to generate damage on the premise of ensuring the assembly precision and safety.
The technical scheme of the invention is as follows: a nuclear main pump multi-component combined hoisting method is characterized in that: the sealing chamber (1) and the pump shaft (2) are accurately positioned and integrated into a whole through a combined positioning device, and the hoisting and transferring of a plurality of components are completed through a hoisting platform (3), wherein the method comprises the following steps:
1) the pump shaft (2) is dropped at the bottom of the sealing chamber (1);
2) the sealing chamber (1) and the hoisting platform (3) are fixedly connected by adopting a first hexagon screw (4);
3) the shaft support (5) is sleeved on the pump shaft (2) and then fixedly connected with the hoisting platform (3) by adopting a second hexagon screw (6);
4) the stretching bow (9) is fixedly connected with the shaft bracket (5) by a third hexagon screw (10);
5) the screw rod (8) penetrates through the stretching bow (9) and is screwed into the lower pump shaft (2) and fixedly connected by a nut (7);
6) at the moment, the sealing chamber (1) and the pump shaft (2) form a whole, and the sealing chamber (1) and the pump shaft (2) can be lifted and transported by utilizing lifting lugs on the crown block and the lifting platform (3).
A nuclear main pump multi-component combined hoisting method is characterized in that: and in the step 3), the assembly relationship between the middle shaft support (5) and the pump shaft (2) is clearance fit, the clearance is less than 0.02mm, and the inner surface of the shaft support (5) is made of polytetrafluoroethylene material.
The technical effects are as follows:
the invention has the advantages that the band-pass hoisting disc (3), the shaft support (5) and the stretching bow (9) finish the accurate positioning and fixing among a plurality of parts, and skillfully enable the sealing chamber (1) and the pump shaft (2) to be integrated. The method can also be applied to the fields of assembly and lifting of other multiple parts.
The assembly relationship of the shaft support (5) and the pump shaft (2) is clearance fit, the clearance is less than 0.02mm, and the coaxiality of the pump shaft and the sealing chamber is indirectly ensured. Meanwhile, the inner surface of the positioning device is made of polytetrafluoroethylene, so that collision and damage of the pump shaft in the assembling and hoisting processes are prevented. The transfer process plays a protective role.
According to the invention, the arch (9), the long screw (8) and the nut (7) are stretched in the step 5), so that the pump shaft is prevented from being displaced in the hoisting and transferring processes, the axial positioning of the pump shaft and the axial positioning of the pump shaft are realized, and the fixing device prevents the pump shaft from being loosened to cause danger in the transferring process.
The combined hoisting method has the advantages that the axial positioning of the radial shafts of the seal chamber and the pump shaft is guaranteed, the purpose of simultaneously hoisting a plurality of parts is realized, the combined hoisting method is applied to the installation of a plurality of nuclear main pump products, the practical effect is good, and the expected effect of the nuclear main pump installation is achieved.
Description of the drawings:
FIG. 1 is a schematic view of the installation method of the present invention
The specific implementation mode is as follows:
as shown in fig. 1, a multi-component combined hoisting method for a nuclear main pump, which precisely positions and integrates a seal chamber 1 and a pump shaft 2 through a combined positioning device, and completes hoisting and transferring of multiple components through a hoisting platform 3, comprises the following steps:
1) dropping the pump shaft 2 at the bottom of the sealing chamber 1;
2) the sealing chamber 1 and the lifting disc 3 are fixedly connected by a first hexagon screw 4;
3) the shaft support 5 is sleeved on the pump shaft 2 and then fixedly connected with the hoisting disc 3 by adopting a second hexagon screw 6;
4) the stretching bow 9 is fixedly connected with the shaft bracket 5 by a third hexagon screw 10;
5) the screw 8 is screwed into the lower pump shaft 2 through the stretching bow 9 and is fixedly connected by a nut 7;
6) at the moment, the sealing chamber 1 and the pump shaft 2 form a whole, and the lifting lugs on the crown block and the lifting disc 3 can be used for lifting and transferring the sealing chamber 1 and the pump shaft 2.
In the step 3): the shaft support 5 and the pump shaft 2 are in clearance fit, the clearance is less than 0.02mm, and the inner surface of the shaft support 5 is made of polytetrafluoroethylene materials.
Claims (1)
1. A nuclear main pump multi-component combined hoisting method is characterized in that: the sealing chamber (1) and the pump shaft (2) are accurately positioned and integrated into a whole through a combined positioning device, and the hoisting and transferring of a plurality of components are completed through a hoisting platform (3), wherein the method comprises the following steps:
1) the pump shaft (2) is dropped at the bottom of the sealing chamber (1);
2) the sealing chamber (1) and the hoisting platform (3) are fixedly connected by adopting a first hexagon screw (4);
3) the shaft support (5) is sleeved on the pump shaft (2) and then fixedly connected with the lifting platform (3) by adopting a second hexagon screw (6), the assembly relationship between the shaft support (5) and the pump shaft (2) is clearance fit, the clearance is smaller than 0.02mm, and the inner surface of the shaft support (5) is made of polytetrafluoroethylene material;
4) the stretching bow (9) is fixedly connected with the shaft bracket (5) by a third hexagon screw (10);
5) the screw rod (8) penetrates through the stretching bow (9) and is screwed into the lower pump shaft (2) and fixedly connected by a nut (7);
6) at the moment, the sealing chamber (1) and the pump shaft (2) form a whole, and the sealing chamber (1) and the pump shaft (2) are lifted and transported by using lifting lugs on the crown block and the lifting platform (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747045.5A CN113526323B (en) | 2021-07-02 | 2021-07-02 | Nuclear main pump multi-component combined hoisting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747045.5A CN113526323B (en) | 2021-07-02 | 2021-07-02 | Nuclear main pump multi-component combined hoisting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113526323A CN113526323A (en) | 2021-10-22 |
| CN113526323B true CN113526323B (en) | 2022-04-08 |
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ID=78097554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110747045.5A Active CN113526323B (en) | 2021-07-02 | 2021-07-02 | Nuclear main pump multi-component combined hoisting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113526323B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304797A2 (en) * | 1987-08-26 | 1989-03-01 | KSB Aktiengesellschaft | Lifting device for a submersible motor-driven pump |
| CN103058043A (en) * | 2012-12-14 | 2013-04-24 | 北车风电有限公司 | Aligning bearing lift for draught fan and lifting method |
| CN202988541U (en) * | 2012-12-14 | 2013-06-12 | 北车风电有限公司 | Self-aligning bearing lifting appliance for air blower |
| CN103183287A (en) * | 2011-12-29 | 2013-07-03 | 核动力运行研究所 | Hoisting clamp specially used for reactor coolant pump main flange bolt |
| CN103626025A (en) * | 2013-12-04 | 2014-03-12 | 大连洁能重工机械有限公司 | Special hoisting mechanism for nuclear main pump flywheel |
| CN204138130U (en) * | 2014-06-13 | 2015-02-04 | 诸暨市越都茶业有限公司 | Hanging device and prepackage clamp positioning mechanism thereof |
| CN109854527A (en) * | 2019-01-30 | 2019-06-07 | 三门核电有限公司 | A kind of shielding main pump locking shielding tool |
| CN110745689A (en) * | 2019-11-29 | 2020-02-04 | 重庆江增船舶重工有限公司 | Turbine type main engine moving and static component assembling and disassembling and hoisting auxiliary tool and assembling and disassembling method |
| CN210944522U (en) * | 2019-11-29 | 2020-07-07 | 重庆江增船舶重工有限公司 | Turbine type main engine moving and static parts mounting and dismounting and hoisting auxiliary tool |
| 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 |
| CN111977500A (en) * | 2020-07-28 | 2020-11-24 | 中广核核电运营有限公司 | Dismounting hanger device and dismounting method for nuclear power station main pump seal static ring assembly |
| CN212403183U (en) * | 2020-03-25 | 2021-01-26 | 河北领启机械设备有限公司 | Prevent spiral case hoist device for assembly of sediment stuff pump of fish tail |
-
2021
- 2021-07-02 CN CN202110747045.5A patent/CN113526323B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304797A2 (en) * | 1987-08-26 | 1989-03-01 | KSB Aktiengesellschaft | Lifting device for a submersible motor-driven pump |
| CN103183287A (en) * | 2011-12-29 | 2013-07-03 | 核动力运行研究所 | Hoisting clamp specially used for reactor coolant pump main flange bolt |
| CN103058043A (en) * | 2012-12-14 | 2013-04-24 | 北车风电有限公司 | Aligning bearing lift for draught fan and lifting method |
| CN202988541U (en) * | 2012-12-14 | 2013-06-12 | 北车风电有限公司 | Self-aligning bearing lifting appliance for air blower |
| CN103626025A (en) * | 2013-12-04 | 2014-03-12 | 大连洁能重工机械有限公司 | Special hoisting mechanism for nuclear main pump flywheel |
| CN204138130U (en) * | 2014-06-13 | 2015-02-04 | 诸暨市越都茶业有限公司 | Hanging device and prepackage clamp positioning mechanism thereof |
| CN109854527A (en) * | 2019-01-30 | 2019-06-07 | 三门核电有限公司 | A kind of shielding main pump locking shielding tool |
| CN110745689A (en) * | 2019-11-29 | 2020-02-04 | 重庆江增船舶重工有限公司 | Turbine type main engine moving and static component assembling and disassembling and hoisting auxiliary tool and assembling and disassembling method |
| CN210944522U (en) * | 2019-11-29 | 2020-07-07 | 重庆江增船舶重工有限公司 | Turbine type main engine moving and static parts mounting and dismounting and hoisting auxiliary tool |
| CN212403183U (en) * | 2020-03-25 | 2021-01-26 | 河北领启机械设备有限公司 | Prevent spiral case hoist device for assembly of sediment stuff pump of fish tail |
| 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 |
| CN111977500A (en) * | 2020-07-28 | 2020-11-24 | 中广核核电运营有限公司 | Dismounting hanger device and dismounting method for nuclear power station main pump seal static ring assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113526323A (en) | 2021-10-22 |
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