CN217239054U - Remote installation tool for irradiation monitoring pipe of reactor pressure vessel of nuclear power plant - Google Patents
Remote installation tool for irradiation monitoring pipe of reactor pressure vessel of nuclear power plant Download PDFInfo
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- CN217239054U CN217239054U CN202121171895.7U CN202121171895U CN217239054U CN 217239054 U CN217239054 U CN 217239054U CN 202121171895 U CN202121171895 U CN 202121171895U CN 217239054 U CN217239054 U CN 217239054U
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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 relates to the technical field of nuclear power maintenance, in particular to a remote installation tool for an irradiation monitoring pipe of a reactor pressure vessel of a nuclear power plant, wherein three transverse brackets B are arranged between two bracket side plates; two tip ends of the two transverse brackets A are respectively fixed with the outer surface of the bottom of the long operating rod, and four end feet are respectively fixed with the upper parts of the two bracket side plates; the upper part and the lower part of the hydraulic ram A are respectively welded and fixed at the middle sections of the two transverse brackets B at the upper part and the middle part; the hydraulic jack fixing bracket is welded on the two bracket side plates and used for fixing the hydraulic jack B; one end of the positioning pin is respectively connected with the end parts of the two hydraulic ejector rods B, and the other end of the positioning pin respectively penetrates through the circular pin holes in the two support side plates and is inserted into the positioning holes of the two irradiation sample racks on the lower reactor component. The utility model discloses mounting tool overall structure is simple, and the manufacturing of being convenient for installs easy operation simultaneously fast, can practice thrift nuclear power plant overhaul time limit for a project.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power maintenance, concretely relates to long-range mounting tool of nuclear power plant's reactor pressure vessel irradiation supervisory tube.
Background
The reactor pressure vessel bears the effects of high temperature, high pressure, fluid scouring, corrosion, neutron irradiation and the like during the operation, so that the toughness of the material is reduced, the ductile-brittle transition temperature is increased, and if the operation temperature and the pressure exceed the limiting conditions, the risk of sudden fracture is easily induced. During operation, the irradiation supervisory tube may monitor the reactor pressure vessel material properties as the reactor changes in order to assess the risk of rupture that may exist. Besides the installation of the irradiation monitoring pipe before the first charging, the irradiation monitoring pipe is also installed during the nuclear power plant refueling overhaul period subsequently.
After the reactor is operated, the reactor pressure vessel and the lower reactor internals have very high radioactivity due to material activation, radioactive substance adhesion and the like, and cannot be installed by using the installation tool and the installation method of the irradiation monitoring tube before loading when the unit is overhauled. At present, aiming at the problem that the irradiation monitoring pipe needs to be installed remotely during the overhaul of a nuclear power plant, no special installation tool is designed domestically, and the problem of remotely installing the irradiation monitoring pipe during the overhaul is not solved.
Therefore, it is highly desirable to design a remote installation tool for an irradiation monitor to solve the problem that the irradiation monitor cannot be installed during overhaul.
Disclosure of Invention
An object of the utility model is to provide a long-range mounting tool of nuclear power plant's reactor pressure vessel irradiation supervisory tube can be used to the installation of reactor pressure vessel irradiation supervisory tube during the overhaul of nuclear power plant.
The technical scheme of the utility model as follows:
a remote installation tool for an irradiation monitoring pipe of a nuclear power plant reactor pressure vessel comprises a positioning pin, a hydraulic ejector rod A, a hydraulic ejector A, a hydraulic hose, an operating long rod, a hoisting ring, a hydraulic pump A, a hydraulic pump B, a transverse support A, a support side plate, a transverse support B, a hydraulic ejector fixing support and a hydraulic ejector rod B;
the long operating rod is of a circular tube structure, and two hydraulic hoses penetrate through the long operating rod;
the hydraulic hose is used for transmitting liquid pressure and is used as an action transmission part for remote installation and operation of the irradiation monitoring pipe;
the upper ends of the two hydraulic hoses are respectively connected with a hydraulic pump A and a hydraulic pump B;
the lower ends of the two hydraulic hoses are connected with the hydraulic jack A and the hydraulic jack B through hydraulic jack connectors respectively;
the hoisting ring is fixedly arranged at the top end of the operating long rod and is used as a hoisting part of the mounting tool;
the two bracket side plates are parallel to each other and are vertically arranged; the number of the transverse supports B is three, the transverse supports B are parallel to each other, are transversely arranged between the two support side plates and are welded and fixed with the support side plates;
the lower half parts of the two bracket side plates are respectively provided with a circular pin hole, and a positioning pin can penetrate through the circular pin holes;
the transverse supports A are of V-shaped structures, and are arranged in parallel up and down;
two tip ends of the two transverse brackets A are respectively welded and fixed with the outer surface of the bottom of the long operating rod, and four end feet are respectively welded and fixed with the upper parts of the two bracket side plates;
the upper part and the lower part of the hydraulic jack A are respectively welded and fixed at the middle sections of the two transverse brackets B at the upper part and the middle part, and the hydraulic mandril A of the hydraulic jack A faces downwards;
the hydraulic jack A can position the installation tool in the vertical direction, and after the installation tool is positioned, the hydraulic ejector rod A of the hydraulic jack A extends out to push against the top plug of the irradiation monitoring pipe and press the irradiation monitoring pipe into the installation groove;
the hydraulic jack fixing supports are of long strip-shaped structures, are four in number, are equally divided into two groups, are respectively welded on the side plates of the two supports and are used for fixing the hydraulic jack B;
the two hydraulic jacks B are respectively welded and fixed in the middle of the two hydraulic jack fixing supports of each group, and the end parts of the two hydraulic push rods B respectively face the circular pin holes in the side plates of the supports;
the positioning pins are of a cylindrical structure, and the number of the positioning pins is two;
one end of each of the two positioning pins is connected with the end of each of the two hydraulic ejector rods B, the other end of each of the two positioning pins penetrates through the circular pin holes in the two support side plates and is inserted into the positioning holes of the two irradiation sample holders on the lower reactor component, the positioning pins are inserted into or pulled out of the positioning holes of the irradiation sample holders by actuating the hydraulic ejector rods B, and meanwhile, reaction force can be provided for the pressing action of the hydraulic ejector rods A.
And the two hydraulic ram fixing supports in each group are arranged in parallel, and one end of each hydraulic ram fixing support is fillet-welded on the side plate of the support and is respectively positioned above and below the circular pin hole.
The distance between the two support side plates is matched with the width of the irradiation sample rack, and the two support side plates can be used for assisting in positioning and installing tools.
The length of the operating long rod is the same as the depth of the reactor core water pool.
And one ends of the two positioning pins are respectively connected with the end parts of the two hydraulic ejector rods B through two fasteners.
The fastener is used for connecting the hydraulic ejector rod B and the positioning pin and transmitting the action of the hydraulic ejector rod B to the positioning pin.
The hydraulic pump A operates one hydraulic jack A through one hydraulic hose, and the hydraulic pump B operates two hydraulic jacks B through the other hydraulic hose.
The hydraulic hose is a stainless steel corrugated pipe.
The positioning pin is a movable and replaceable part.
The remote installation method is used for remote installation of the irradiation monitoring pipe during the nuclear power plant refueling overhaul.
The beneficial effects of the utility model reside in that:
1) the utility model discloses mounting tool has solved the difficulty of internal nuclear power plant long-range installation irradiation supervisory control pipe during overhaul from nothing, has filled the blank of internal long-range installation irradiation supervisory control pipe instrument during overhaul.
2) The utility model discloses mounting tool overall structure is simple, and the manufacturing of being convenient for installs easy operation simultaneously fast, can practice thrift the overhaul period of a nuclear power plant.
3) The utility model discloses mounting tool almost all adopts stainless steel material to make processing and forms, and the instrument of being convenient for is clean, can not produce the pollution to the quality of water in reactor core pond in the course of the work.
Drawings
FIG. 1 is an elevation view of a remote installation tool;
fig. 2 is a side view of a remote installation tool.
In the figure: 1. positioning pins; 2. a hydraulic ejector rod A; 3. a hydraulic ram A; 4. a hydraulic top connector; 5. a hydraulic hose; 6. operating the long rod; 7. hoisting a ring; 8. a hydraulic pump A; 9. a hydraulic pump B; 10. a transverse bracket A; 11. a bracket side plate; 12. a transverse bracket B; 13. a hydraulic ram B; 14. a hydraulic jack fixing bracket; 15. a hydraulic ejector rod B; 16. a fastener.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The remote installation tool for the irradiation monitoring pipe of the reactor pressure vessel of the nuclear power plant shown in the figures 1-2 comprises a positioning pin 1, a hydraulic ejector rod A2, a hydraulic ejector A3, a hydraulic hose 5, an operating long rod 6, a hoisting ring 7, a hydraulic pump A8, a hydraulic pump B9, a transverse support A10, a support side plate 11, a transverse support B12, a hydraulic ejector fixing support 14, a hydraulic ejector rod B15 and a fastener 16.
The long operating rod 6 is made of circular steel tubes, the length of the long operating rod is the same as the depth of a reactor core water pool, and two hydraulic hoses 5 penetrate through the long operating rod 6. The hydraulic hose 5 is a stainless steel corrugated pipe and is used for transmitting liquid pressure. Meanwhile, the device is used as an action transmission component for remote installation operation of the irradiation monitoring pipe, helps installation personnel to perform remote operation above the reactor core water pool, and avoids the personnel from contacting lower reactor internals in a short distance.
The upper ends of the two hydraulic hoses 5 are respectively connected with a hydraulic pump A8 and a hydraulic pump B9, so that an installer can conveniently perform pressurization operation above the water pool. The lower ends of the two hydraulic hoses 5 are respectively connected with a hydraulic jack A3 and a hydraulic jack B13 through a hydraulic jack connector 4. Specifically, the hydraulic pump A8 operates one hydraulic ram A3 through one hydraulic hose 5, and the hydraulic pump B9 operates two hydraulic rams B13 through the other hydraulic hose 5.
The hoisting ring 7 is made of stainless steel and is fixedly arranged at the top end of the long operating rod 6 to serve as a hoisting part of the mounting tool, and the position and the direction of the mounting tool are adjusted by operating the hoisting ring 7 above the water pool to ensure smooth mounting.
The support side plates 11 and the transverse support B12 are both stainless steel strip-shaped structures, wherein two support side plates 11 are arranged in parallel and vertically; the number of the transverse supports B12 is three, the three transverse supports B12 are parallel to each other and transversely arranged between the two support side plates 11 and fixed with the support side plates 11 through fillet welding. The distance between the two support side plates 11 is matched with the width of the irradiation sample rack, and the two support side plates can be used for assisting in positioning and installing tools.
And the lower half parts of the two bracket side plates 11 are respectively provided with a circular pin hole, and the positioning pin 1 can penetrate through the circular pin holes.
The transverse supports A10 are of a V-shaped structure made of stainless steel, and are arranged in parallel up and down. Two most advanced of two horizontal support A10 are fixed with the surface welding of operation stock 6 bottom respectively, and four end legs pass through fillet weld with the upper portion of two support curb plates 11 respectively and fix, can prolong the horizontal operating distance of mounting tool, avoid because there is outside outstanding outer edge on the internals upper portion and lead to the irradiation sample frame on the internals that positioning pin 1 and the hydraulic pressure ejector pin A2 of mounting tool can't contact.
The upper part and the lower part of the hydraulic ram A3 are respectively welded and fixed on the middle sections of the two transverse brackets B12 at the upper part and the middle part, and the hydraulic mandril A2 of the hydraulic ram A3 faces downwards.
The hydraulic ram A3 can fix a position the mounting tool in the vertical direction, and after the mounting tool fixes a position, the hydraulic ejector pin A2 of the hydraulic ram A3 stretches out, can push against the irradiation supervisory tube top plug, and presses the irradiation supervisory tube into the mounting groove.
The hydraulic ram fixing supports 14 are of a strip-shaped structure, four in number and divided into two groups, and are welded on the two support side plates 11 respectively and used for fixing the hydraulic ram B13. The two hydraulic ram fixing brackets 14 of each group are arranged in parallel, and one end of each hydraulic ram fixing bracket is fillet-welded on the bracket side plate 11 and is respectively positioned above and below the circular pin hole.
The two hydraulic jacks B13 are respectively welded and fixed in the middle of the two hydraulic jack fixing brackets 14 of each group, and the end parts of the two hydraulic push rods B15 respectively face the circular pin holes on the bracket side plates 11.
The positioning pin 1 is a cylindrical structure made of stainless steel, has two structures and is a movable and replaceable part. One end of each of the two positioning pins 1 is connected with the end of each of the two hydraulic ejector pins B15 through two fasteners 16, the other end of each of the two positioning pins passes through the circular pin holes in the two support side plates 11 and is inserted into the positioning holes of the two irradiation sample holders on the lower reactor internals, the positioning pins 1 are inserted into or pulled out of the positioning holes of the irradiation sample holders by actuating the hydraulic ejector pins B15, and meanwhile, reaction force can be provided for the pressing action of the hydraulic ejector pins A2.
The fasteners 16 are made of stainless steel, and are used for connecting the hydraulic ejector rod B15 and the positioning pin 1 and transmitting the action of the hydraulic ejector rod B15 to the positioning pin 1.
When nuclear power plant need install reactor pressure vessel irradiation supervisory tube during refueling overhaul, adopt the utility model discloses the instrument carries out the long-range installation of irradiation supervisory tube.
1) Under the state that the reactor core water pool is full of water, the lower reactor internals are lifted by using a ring crane, and are hoisted into the reactor internals pool and placed on a storage rack;
2) placing the irradiation monitoring pipe into a mounting hole of a corresponding irradiation sample rack on the lower reactor component by using an irradiation monitoring pipe extraction tool;
3) moving a crane or a ring crane on the loading and unloading machine, connecting a hoisting ring 7 of the installation tool to a crane hook through a hanging strip, and vertically hoisting the assembled installation tool by using the crane;
4) adjusting the position of an installation tool of the irradiation monitoring pipe by using a crane, moving a hydraulic ejector rod A2 to the upper end of an ejector plug of the irradiation monitoring pipe, and dropping an operation tool to enable a hydraulic ejector rod A2 to drop into a groove of the ejector plug of the irradiation monitoring pipe;
5) operating the hydraulic jack A3 to adjust the position of the hydraulic mandril A2 to ensure that the positioning pin 1 is aligned with the positioning hole of the irradiation sample rack, and operating the hydraulic jack B13 to ensure that the positioning pin 1 is inserted into the positioning hole; during the period, the position of the installation tool can be continuously adjusted by operating the long rod 6 and the hoisting ring 7;
6) the hydraulic pump A8 is operated to enable the hydraulic ejector rod A2 to be pressed out downwards, the hydraulic ejector rod A2 is guaranteed to be abutted against a top plug of the irradiation monitoring pipe in the operation process, and pressurization is continued until the irradiation monitoring pipe is installed in place;
7) releasing pressure of the hydraulic pump B9, retracting the hydraulic ejector rod B15, and enabling the positioning pin 1 to exit from the positioning hole; the hydraulic pump A8 releases pressure, and the hydraulic mandril A2 is retracted; the mounting tool is separated from the lower in-pile member and placed at a safe position;
8) and (5) operating the ring crane to hoist the lower reactor internals back into the reactor pressure vessel, and finishing the installation of the irradiation monitoring pipe.
Claims (10)
1. The utility model provides a long-range mounting tool of nuclear power plant's reactor pressure vessel irradiation supervisory tube which characterized in that: the hydraulic lifting device comprises a positioning pin (1), a hydraulic ejector rod A (2), a hydraulic jack A (3), a hydraulic hose (5), an operating long rod (6), a hoisting ring (7), a hydraulic pump A (8), a hydraulic pump B (9), a transverse support A (10), a support side plate (11), a transverse support B (12), a hydraulic jack fixing support (14) and a hydraulic ejector rod B (15);
the long operating rod (6) is of a circular tube structure, and two hydraulic hoses (5) penetrate through the long operating rod;
the hydraulic hose (5) is used for transmitting liquid pressure and is used as an action transmission component for remote installation and operation of the irradiation monitoring pipe;
the upper ends of the two hydraulic hoses (5) are respectively connected with a hydraulic pump A (8) and a hydraulic pump B (9);
the lower ends of the two hydraulic hoses (5) are respectively connected with the hydraulic jack A (3) and the hydraulic jack B (13) through the hydraulic jack connector (4);
the hoisting ring (7) is fixedly arranged at the top end of the long operating rod (6) and is used as a hoisting part of the mounting tool;
the support side plates (11) and the transverse support B (12) are both of a long strip-shaped structure, wherein two support side plates (11) are arranged in parallel and vertically; three transverse supports B (12) are arranged in parallel and transversely between the two support side plates (11) and are welded and fixed with the support side plates (11);
the lower half parts of the two bracket side plates (11) are respectively provided with a circular pin hole, and the positioning pin (1) can penetrate through the circular pin holes;
the transverse supports A (10) are of V-shaped structures, and are arranged in parallel up and down;
two tip ends of the two transverse supports A (10) are respectively welded and fixed with the outer surface of the bottom of the long operating rod (6), and four end feet are respectively welded and fixed with the upper parts of the two support side plates (11);
the upper part and the lower part of the hydraulic ram A (3) are respectively welded and fixed at the middle sections of the two transverse brackets B (12) at the upper part and the middle part, and the hydraulic ejector rod A (2) of the hydraulic ram A (3) faces downwards;
the hydraulic jack A (3) can position the installation tool in the vertical direction, and after the installation tool is positioned, the hydraulic ejector rod A (2) of the hydraulic jack A (3) extends out to prop against the ejection plug of the irradiation monitoring pipe and press the irradiation monitoring pipe into the installation groove;
the hydraulic jack fixing supports (14) are of strip-shaped structures, four in number and divided into two groups, are respectively welded on the two support side plates (11) and are used for fixing the hydraulic jack B (13);
the two hydraulic jacks B (13) are respectively welded and fixed in the middle of the two hydraulic jack fixing supports (14) of each group, and the end parts of the two hydraulic push rods B (15) respectively face to the circular pin holes in the support side plates (11);
the positioning pins (1) are of a cylindrical structure, and the number of the positioning pins is two;
one end of each of the two positioning pins (1) is connected with the end of each of the two hydraulic ejector rods B (15), the other end of each of the two positioning pins penetrates through the circular pin holes in the two support side plates (11) and is inserted into the positioning holes of the two irradiation sample racks in the lower reactor, the positioning pins (1) are inserted into or pulled out of the positioning holes of the irradiation sample racks by actuating the hydraulic ejector rods B (15), and meanwhile, reaction force can be provided for the pressing action of the hydraulic ejector rods A (2).
2. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as claimed in claim 1, wherein: and each group of two hydraulic ram fixing brackets (14) are arranged in parallel, and one end of each hydraulic ram fixing bracket is fillet-welded on the bracket side plate (11) and is respectively positioned above and below the circular pin hole.
3. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as claimed in claim 1, wherein: the distance between the two support side plates (11) is matched with the width of the irradiation sample rack, and the two support side plates can be used for assisting in positioning and installing tools.
4. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as claimed in claim 1, wherein: the length of the long operating rod (6) is the same as the depth of the core water pool.
5. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as set forth in claim 1, wherein: one end of each positioning pin (1) is connected with the end of each hydraulic ejector rod B (15) through two fasteners (16).
6. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as set forth in claim 5, wherein: the fastener (16) is used for connecting the hydraulic ejector rod B (15) and the positioning pin (1) and transmitting the action of the hydraulic ejector rod B (15) to the positioning pin (1).
7. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as claimed in claim 1, wherein: the hydraulic pump A (8) operates one hydraulic ram A (3) through one hydraulic hose (5), and the hydraulic pump B (9) operates two hydraulic rams B (13) through the other hydraulic hose (5).
8. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as set forth in claim 1, wherein: the hydraulic hose (5) is a stainless steel corrugated pipe.
9. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as claimed in claim 1, wherein: the positioning pin (1) is a movable and replaceable part.
10. The remote installation tool for the irradiation monitoring pipe of the nuclear power plant reactor pressure vessel as claimed in any one of claims 1 to 9, wherein: the remote installation method is used for remote installation of the irradiation monitoring pipe during the nuclear power plant refueling overhaul.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121171895.7U CN217239054U (en) | 2021-05-28 | 2021-05-28 | Remote installation tool for irradiation monitoring pipe of reactor pressure vessel of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121171895.7U CN217239054U (en) | 2021-05-28 | 2021-05-28 | Remote installation tool for irradiation monitoring pipe of reactor pressure vessel of nuclear power plant |
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| Publication Number | Publication Date |
|---|---|
| CN217239054U true CN217239054U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121171895.7U Active CN217239054U (en) | 2021-05-28 | 2021-05-28 | Remote installation tool for irradiation monitoring pipe of reactor pressure vessel of nuclear power plant |
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| CN (1) | CN217239054U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115050494A (en) * | 2022-06-27 | 2022-09-13 | 中国核动力研究设计院 | Cantilever type irradiation monitoring tube gripping device and working method |
| CN115410734A (en) * | 2021-05-28 | 2022-11-29 | 福建福清核电有限公司 | Remote installation tool for irradiation monitoring pipe of reactor pressure vessel of nuclear power plant |
-
2021
- 2021-05-28 CN CN202121171895.7U patent/CN217239054U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115410734A (en) * | 2021-05-28 | 2022-11-29 | 福建福清核电有限公司 | Remote installation tool for irradiation monitoring pipe of reactor pressure vessel of nuclear power plant |
| CN115050494A (en) * | 2022-06-27 | 2022-09-13 | 中国核动力研究设计院 | Cantilever type irradiation monitoring tube gripping device and working method |
| CN115050494B (en) * | 2022-06-27 | 2023-11-17 | 中国核动力研究设计院 | Cantilever type irradiation monitoring pipe grabbing device and working method |
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