CN211034886U - Portable shielding main pump kingbolt lifting device - Google Patents
Portable shielding main pump kingbolt lifting device Download PDFInfo
- Publication number
- CN211034886U CN211034886U CN201921410414.6U CN201921410414U CN211034886U CN 211034886 U CN211034886 U CN 211034886U CN 201921410414 U CN201921410414 U CN 201921410414U CN 211034886 U CN211034886 U CN 211034886U
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- main
- bolt
- main pump
- fixed pulley
- main bolt
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Abstract
A portable shielding main pump main bolt hoisting tool belongs to the technical field of nuclear power station shielding main pump maintenance. The utility model discloses a thread plug, fixed pulley, king bolt hoist, capstan winch, wire rope, the screw plug lower extreme is located to the fixed pulley, and wire rope passes through the fixed pulley and connects king bolt hoist and capstan winch. The utility model discloses the structure is light and handy, and the simple operation can improve the efficiency of kingbolt hoist and mount greatly, reduces maintenance personal radiation total dose.
Description
Technical Field
The utility model relates to a nuclear power station shielding main pump maintenance technical field especially relates to a portable shielding main pump kingbolt lifting device.
Background
After a nuclear power station runs for a long time, the possibility that the thrust bearing, the shielding sleeve and other parts of a shielding reactor coolant pump (hereinafter referred to as a shielding main pump) have problems is gradually increased, and it is necessary to plan and develop a special tool for replacing and overhauling the shielding main pump in a radioactive environment in advance. The pump casing of the shielding main pump is welded on the bottom head of the steam generator, the shielding main pump is inversely arranged on the pump casing through 24 main bolts, and the replacement and maintenance of the shielding main pump relate to the repeated disassembly and assembly of the main bolts.
Through the comprehensive analysis of the evaporator compartment field condition, the connection mode of the shielding main pump and the pump shell and the dismounting and mounting process of the main bolt of the shielding main pump, the factors restricting the hoisting of the main bolt of the shielding main pump are mainly as follows: 1. the westinghouse design shielding main pump main bolt hoisting process is based on the prerequisite that a main pump mounting trolley is in place, but the main pump mounting trolley can be hoisted to a steam generator chamber only after a large amount of materials in an evaporator compartment are dismantled, so that the hoisting work of the main bolt restricts a main pump overhaul key path, the key path time is greatly increased, and the total radiation dose of maintenance personnel is improved; 2. the inspection of main bolt elongation of the shielding main pump is executed for many times in the service life, if the adjustment of the main bolt elongation needs to be completed under the matching of the main bolt dismounting and hoisting work, and a large amount of materials in an evaporator compartment need to be dismounted by means of the main shielding pump mounting trolley dismounting and hoisting the main bolt.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that above-mentioned prior art exists, provide a portable shielding main pump owner bolt lifting device, its structure is light and handy, and the simple operation can improve the efficiency of owner bolt hoist and mount greatly, reduces maintenance personal radiation total dose.
The utility model aims at realizing through the following technical scheme:
the utility model provides a portable shielding main pump kingbolt lifting device, includes threaded plug, fixed pulley, kingbolt hoist, capstan winch, wire rope, the fixed pulley is located the threaded plug lower extreme, wire rope passes through the fixed pulley is connected the kingbolt hoist with the capstan winch.
The utility model discloses an application principle: when the main bolt is installed, the threaded plug is screwed into the main bolt hole of the pump shell, the winch is installed on the main flange, then the steel wire rope is released through the winch, the main bolt lifting appliance penetrates through the main flange hole and is placed to the position of the main bolt, the main bolt lifting appliance is installed and connected with the main bolt, then the steel wire rope is pulled through the winch, the main bolt penetrates through the main flange hole and is lifted upwards, and the main bolt is conveniently screwed into the main bolt hole of the pump shell subsequently. The operation when disassembling the main bolt is the same as the above operation, and the main bolt is stably lowered to the ground or other target positions mainly by slowly releasing the wire rope by the winch. In addition, the winch can be installed by other parts, such as firstly installing a C-shaped support on the main flange, jacking through a bolt, and then installing and connecting the winch on the C-shaped support through a connecting piece such as a bolt and a nut, so as to ensure the stability.
Preferably, the screw plug is connected with the fixed pulley through a bolt and nut assembly. The convenient dismouting of structure is maintained, and the dismantlement state is portable more simultaneously.
Preferably, the upper end of the threaded plug is provided with a chamfer. So that the process of screwing the threaded plug into the main bolt hole is smoother.
As the utility model discloses it is preferred, the main bolt hoist includes the lug, locates the lug crossbeam of lug lower extreme, locates the threaded rod of lug crossbeam lower extreme. The lifting device is reasonable in structure, the lifting lugs are used for being connected with steel wire ropes, the lifting lug cross beam improves the structural strength and stability of the whole lifting device, and the threaded rods are used for being connected with lifting threaded holes in the end portions of the main bolts.
As the utility model discloses it is preferred, lug upper portion is connected with the wire rope and detains. The structure is more convenient for connecting the steel wire rope.
As the utility model discloses it is preferred, lug crossbeam both ends all are equipped with the pinhole. When the main bolt is lifted to the position that the lifting lug cross beam penetrates through and is positioned above the main flange hole, the fixing pin is inserted into the pin hole, and the main bolt lifting appliance and the main bolt connected with the main bolt lifting appliance are hung on the main flange through the fixing pin, so that subsequent installation and operation are facilitated.
As the utility model discloses it is preferred, the capstan winch is hand winch. The hand winch is simple in structure, convenient to operate, free of structures such as power supply equipment or electric wires and convenient to carry.
The utility model has the advantages that: can realize shielding main pump kingbolt hoist and mount's function under the condition that does not rely on shielding main pump installation dolly, save the dismouting time of bulk material dismouting and main pump installation dolly on the main pump cavity hoist and mount passageway, shorten main pump hoist and mount critical path time, reduce maintenance personal radiation total dose. And the hoisting tool is light and convenient to operate.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing an assembly structure of a threaded plug and a fixed pulley;
fig. 3 is a schematic structural diagram of a kingbolt hanger.
1-a threaded plug; 2-fixed pulley; 3-main bolt hoist; 4-a winch; 5-a steel wire rope; 6-pump casing; 7-a main flange; an 8-C shaped scaffold; 31-a lifting lug; 32-a lug beam; 33-a threaded rod; 34-steel wire rope buckle; 35-fixed pins.
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 portable shielding main pump kingbolt lifting device, includes threaded plug 1, fixed pulley 2, kingbolt hoist 3, capstan winch 4, wire rope 5, fixed pulley 2 locates 1 lower extreme of threaded plug, wire rope 5 passes through fixed pulley 2 is connected kingbolt hoist 3 with capstan winch 4.
Specifically, the threaded plug 1 is connected with the fixed pulley 2 through a bolt and nut assembly. The convenient dismouting of structure is maintained, and the dismantlement state is portable more simultaneously. The upper end of the threaded plug 1 is also provided with a chamfer. So that the process of screwing the threaded plug into the main bolt hole is smoother.
In addition, the main bolt hanger 3 includes a lifting lug 31, a lifting lug beam 32 provided at a lower end of the lifting lug 31, and a threaded rod 33 provided at a lower end of the lifting lug beam 32. The lifting device is reasonable in structure, the lifting lugs are used for being connected with steel wire ropes, the lifting lug cross beam improves the structural strength and stability of the whole lifting device, and the threaded rods are used for being connected with lifting threaded holes in the end portions of the main bolts. The upper part of the lifting lug 31 is connected with a wire rope buckle 34. The structure is more convenient for connecting the steel wire rope. The two ends of the lifting lug cross beam 32 are provided with pin holes. When the main bolt is lifted to the position that the lifting lug cross beam passes through and is positioned above the main flange hole, the fixing pin 35 is inserted into the pin hole, and the main bolt lifting appliance and the main bolt connected with the main bolt lifting appliance are hung on the main flange through the fixing pin, so that the subsequent installation operation is facilitated.
The winch 4 is a hand winch. The hand winch is simple in structure, convenient to operate, free of structures such as power supply equipment or electric wires and convenient to carry.
To sum up, the use principle of this instrument: when the main bolt is installed, the threaded plug 1 is screwed into a main bolt hole of the pump shell 6, the winch 4 is installed on the main flange 7, the steel wire rope 5 is released through the winch 4, the main bolt lifting tool 3 penetrates through the main flange hole and is placed to the position of the main bolt, the main bolt lifting tool 3 is installed and connected with the main bolt, the steel wire rope 5 is pulled through the winch 4, the main bolt penetrates through the main flange hole and is lifted upwards until the lifting lug cross beam 32 rises above the main flange hole, the two fixing pins 35 are respectively inserted into pin holes of the lifting lug cross beam 32, the main bolt lifting tool 3 and the main bolt are hung on the main flange 7, and subsequent main bolt installation operation is facilitated. The operation when detaching the main bolt is the same as the above operation, and the main bolt has been stably lowered to the ground or other target position mainly by slowly releasing the wire rope 5 by the winch 4. In addition, the winch 5 can be installed by other parts, such as first installing a C-shaped bracket 8 on the main flange 7, pushing the C-shaped bracket tightly against the main flange through bolts, and then installing and connecting the winch 4 on the C-shaped bracket through connecting pieces such as bolts and nuts, etc., so as to ensure stability.
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 (5)
1. A portable shielding main pump main bolt hoisting tool is characterized by comprising a threaded plug, a fixed pulley, a main bolt hoisting tool, a winch and a steel wire rope, wherein the fixed pulley is arranged at the lower end of the threaded plug, and the steel wire rope is connected with the main bolt hoisting tool and the winch through the fixed pulley; the main bolt lifting appliance comprises lifting lugs, a lifting lug cross beam arranged at the lower end of the lifting lugs and a threaded rod arranged at the lower end of the lifting lug cross beam; and pin holes are formed in two ends of the lifting lug cross beam.
2. The portable shielding main pump main bolt hoisting tool of claim 1, wherein the threaded plug is connected with the fixed pulley through a bolt-nut assembly.
3. The portable shielding main pump main bolt hoisting tool of claim 1, wherein the upper end of the threaded plug is provided with a chamfer.
4. The portable shielding main pump main bolt hoisting tool of claim 1, wherein a wire rope buckle is connected to the upper portion of the lifting lug.
5. The portable shielded main pump main bolt lifting tool of claim 1, wherein the winch is a hand winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410414.6U CN211034886U (en) | 2019-08-28 | 2019-08-28 | Portable shielding main pump kingbolt lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410414.6U CN211034886U (en) | 2019-08-28 | 2019-08-28 | Portable shielding main pump kingbolt lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211034886U true CN211034886U (en) | 2020-07-17 |
Family
ID=71538223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921410414.6U Active CN211034886U (en) | 2019-08-28 | 2019-08-28 | Portable shielding main pump kingbolt lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211034886U (en) |
-
2019
- 2019-08-28 CN CN201921410414.6U patent/CN211034886U/en active Active
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