CN219037845U - Tool for measuring gap between lifting tool and guide device of reactor core detector - Google Patents
Tool for measuring gap between lifting tool and guide device of reactor core detector Download PDFInfo
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- CN219037845U CN219037845U CN202222710734.1U CN202222710734U CN219037845U CN 219037845 U CN219037845 U CN 219037845U CN 202222710734 U CN202222710734 U CN 202222710734U CN 219037845 U CN219037845 U CN 219037845U
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- lifting cylinder
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- 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
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Abstract
The utility model belongs to measuring tools, and particularly relates to a reactor core detector guide device lifting tool clearance measuring tool. Comprising a semi-annular member. The external shape of the component is a 120-degree annular structure. The member is internally provided with two annular through holes. The two annular through holes are symmetrically arranged. The opening angle of the two annular through holes is 50 degrees. The utility model has the beneficial effects that: by using the utility model, the 3mm gap (within the range of 0-5 mm) between the upper lifting cylinder and the lower lifting cylinder in the meshing and uncoupling process of the IGA lifting tool can be accurately controlled, so that the meshing teeth of the upper lifting cylinder and the lower lifting cylinder do not interfere, friction resistance generated between the meshing teeth of the upper lifting cylinder and the step surfaces of the meshing teeth on the lower lifting cylinder can be avoided, the meshing and uncoupling rotation operation of the upper lifting cylinder and the lower lifting cylinder is carried out in one step, no jamming is generated, and the working efficiency is obviously improved.
Description
Technical Field
The utility model belongs to measuring tools, and particularly relates to a reactor core detector guide device lifting tool clearance measuring tool.
Background
The Hua Long I is the third generation million kilowatt level pressure advanced water reactor nuclear power of Chinese autonomous research and development design, and a reactor core detector guide device (hereinafter referred to as IGA) is added to the upper part of the reactor pressure vessel, so a special lifting appliance (hereinafter referred to as IGA lifting appliance) for lifting the IGA is newly added on the basis of an M310 nuclear power unit by using the Hua Long I inner part lifting appliance. Because of the limitation of the design height of the IGA lifting appliance, the lifting appliance consists of an upper lifting cylinder and a lower lifting cylinder, and in the process of lifting or lowering the IGA by using the IGA lifting appliance, the four groups of upper lifting cylinders and lower lifting cylinders of the IGA lifting appliance need to be frequently engaged and disengaged. In the engaged state of the upper and lower lifting cylinders, a gap of only 5mm exists between the lower joint engaging teeth of the upper lifting cylinder and the upper joint steps of the lower lifting cylinder, the engagement and disengagement operation of the upper and lower lifting cylinders is carried out by using a nuclear island annular crane, the gap between the upper and lower lifting cylinders can be accurately controlled within 0-5mm in the hoisting process by visual observation of personnel, if the gap cannot be controlled, the engagement and disengagement rotation operation of the upper and lower lifting cylinders can generate jamming due to the dry engaging teeth (when the gap is larger than 5 mm) or friction resistance (when the gap is 0) of the engaging teeth of the upper and lower lifting cylinders, and the position of a crane lifting hook is required to be adjusted for multiple times to eliminate the jamming. Therefore, the gap measuring tool for the lifting tool of the guide device of the reactor core detector of the Hua-Dragon reactor disclosed by the utility model realizes the rapid and efficient engagement and disengagement rotation operation of the lifting cylinders at the upper part and the lower part of the IGA lifting tool, reduces the time of major repair critical paths, reduces the radiation dose received by personnel in a radiation control area, and has great significance.
Disclosure of Invention
The utility model aims to provide a reactor core detector guide device lifting tool clearance measuring tool which can improve the working efficiency of engagement and disengagement rotation operation of upper and lower lifting cylinders of an IGA lifting tool, reduce the time of major repair critical paths and reduce the dosage of radioactivity received by personnel.
The technical scheme of the utility model is as follows: a reactor core detector guide hanger gap measurement tool includes a semi-annular member.
The external shape of the component is a 120-degree annular structure.
The inner diameter of the member is 151mm.
The annular width of the member is 79mm.
The thickness of the component is 3mm.
The member is internally provided with two annular through holes.
The two annular through holes are symmetrically arranged.
The opening angle of the two annular through holes is 50 degrees.
The utility model has the beneficial effects that: by using the utility model, the 3mm gap (within the range of 0-5 mm) between the upper lifting cylinder and the lower lifting cylinder in the meshing and uncoupling process of the IGA lifting tool can be accurately controlled, so that the meshing teeth of the upper lifting cylinder and the lower lifting cylinder do not interfere, friction resistance generated between the meshing teeth of the upper lifting cylinder and the step surfaces of the meshing teeth on the lower lifting cylinder can be avoided, the meshing and uncoupling rotation operation of the upper lifting cylinder and the lower lifting cylinder is carried out in one step, no jamming is generated, and the working efficiency is obviously improved.
Drawings
FIG. 1 is a schematic diagram of a reactor core detector guide hanger gap measurement tool according to the present utility model;
fig. 2 is a schematic diagram of a tool for measuring the gap between a guide device and a hanger of a reactor core detector according to the present utility model.
In the figure: 1 upper lifting cylinder, 2 clearance measuring tool, 3 lower lifting cylinder.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples.
The utility model is used for the separation and engagement operation of the upper and lower lifting cylinders of the lifting tool of the guide device of the Hua-long reactor core detector, and realizes the rapid engagement and separation of the upper and lower lifting cylinders by precisely controlling the gap between the upper and lower lifting cylinders, thereby obviously improving the working efficiency.
As shown in figure 1, the tool for measuring the clearance of the lifting appliance of the reactor core detector guide device comprises a semi-annular member, wherein the member is of a 120-degree annular structure, the diameter of the inner side of the member is 151mm, the annular width of the member is 79mm, the thickness of the member is 3mm, two annular through holes are symmetrically formed in the annular structure, and the opening angle of each through hole is 50 degrees.
The diameter of the inner side of the clearance measuring tool is 151mm and is equal to the outer diameter of the lower joint of the lower lifting cylinder of the IGA lifting tool, so that the tool can be tightly attached to the lower lifting cylinder of the IGA lifting tool when in use; the width of the gap measuring tool is 79mm, so that enough margin is reserved for a hand operation space, and the injury caused by extrusion of fingers of a person and a lifting cylinder on the upper part of the IGA lifting appliance in the operation process is avoided; the thickness of the clearance measuring tool is 3mm (0-5 mm intermediate value), the clearance measuring tool is used as an entity measuring device in the lifting process of the IGA lifting appliance, a reliable judgment basis is provided for lifting operators, and the clearance between the upper lifting cylinder and the lower lifting cylinder of the IGA lifting appliance is accurately controlled; the clearance measuring tool is symmetrically provided with two annular through holes with 50-degree openings, and an operator can extend fingers into the through holes so as to facilitate the grabbing of the tool and the levelness of the holding tool.
As shown in fig. 2, the present utility model is used as follows:
placing the measuring tool 2 on the upper meshing tooth step surface of the lower lifting cylinder 3;
lowering the upper lifting cylinder 1 by a crane;
when the lower end face of the lower meshing teeth of the upper lifting cylinder 1 is flush with the upper end face of the measuring tool 2 by visual observation, the gap between the upper lifting cylinder and the lower lifting cylinder is controlled to be 3mm, and the crane is stopped from being lowered;
the operator manually rotates the upper lifting cylinder 1 clockwise to complete the meshing operation of the upper lifting cylinder and the lower lifting cylinder of the IGA lifting appliance.
Lifting the upper lifting cylinder 1 by a crane;
in the lifting process of the upper lifting cylinder 1, when the measuring tool 2 can just fill the gap between the upper lifting cylinder 1 and the lower lifting cylinder 3, the gap between the upper lifting cylinder and the lower lifting cylinder is controlled to be 3mm, and the crane lifting is stopped;
the operator manually rotates the upper lifting cylinder 1 anticlockwise to complete the upper and lower lifting cylinders of the IGA lifting appliance to be disconnected.
Claims (4)
1. A reactor core detector guider hoist clearance measuring tool which characterized in that: comprises a semi-annular component;
the shape of the component is a 120-degree annular structure;
the inner diameter of the component is 151mm;
the annular width of the component is 79mm;
the thickness of the component is 3mm.
2. The reactor core detector guide hanger gap measurement tool of claim 1, wherein: the member is internally provided with two annular through holes.
3. The reactor core detector guide hanger gap measurement tool of claim 2, further comprising: the two annular through holes are symmetrically arranged.
4. The reactor core detector guide hanger gap measurement tool of claim 2, further comprising: the opening angle of the two annular through holes is 50 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222710734.1U CN219037845U (en) | 2022-10-14 | 2022-10-14 | Tool for measuring gap between lifting tool and guide device of reactor core detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222710734.1U CN219037845U (en) | 2022-10-14 | 2022-10-14 | Tool for measuring gap between lifting tool and guide device of reactor core detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219037845U true CN219037845U (en) | 2023-05-16 |
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ID=86284262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222710734.1U Active CN219037845U (en) | 2022-10-14 | 2022-10-14 | Tool for measuring gap between lifting tool and guide device of reactor core detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219037845U (en) |
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2022
- 2022-10-14 CN CN202222710734.1U patent/CN219037845U/en active Active
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