CN109817358B - Irradiation monitoring device for reactor pressure vessel of high-temperature gas cooled reactor nuclear power station - Google Patents
Irradiation monitoring device for reactor pressure vessel of high-temperature gas cooled reactor nuclear power station Download PDFInfo
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- CN109817358B CN109817358B CN201910046165.5A CN201910046165A CN109817358B CN 109817358 B CN109817358 B CN 109817358B CN 201910046165 A CN201910046165 A CN 201910046165A CN 109817358 B CN109817358 B CN 109817358B
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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
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Abstract
The invention discloses an irradiation monitoring device for a reactor pressure vessel of a high-temperature gas cooled reactor nuclear power station, which comprises an irradiation monitoring pipe assembly, wherein the irradiation monitoring pipe assembly comprises a plurality of irradiation monitoring pipe sections which are mutually connected, and a sample assembly is arranged in each irradiation monitoring pipe section; the two adjacent irradiation monitoring pipe sections are detachably connected through a connecting piece, and the two adjacent irradiation monitoring pipe sections can rotate through the connecting piece between the two adjacent irradiation monitoring pipe sections; and a cord removably attached to one end of the irradiation monitoring tube assembly. Compared with the prior art, the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas-cooled reactor nuclear power station can be inserted into and pulled out of a bent pipe channel, has direction recognition, can prevent hard collision with the channel, and can monitor a high-temperature section and a low-temperature section simultaneously.
Description
Technical Field
The invention belongs to the field of nuclear power, and particularly relates to a reactor pressure vessel irradiation monitoring device for a high-temperature gas cooled reactor nuclear power station.
Background
A high-temperature gas-cooled reactor pressure vessel is one of main equipment of a nuclear power station. The reactor pressure vessel cylinder and the welding seam are made of ferrite low alloy steel, have the characteristic of irradiation embrittlement under long-term fast neutron irradiation, and require that the operation parameters of the system are properly adjusted by considering the irradiation effect in the whole life of the reactor pressure vessel. Therefore, in the design of the reactor pressure vessel, irradiation supervision should be performed on the reactor pressure vessel material.
The existing pressurized water reactor nuclear power station reactor pressure vessel irradiation monitoring channel is a straight pipe type, the irradiation monitoring pipe is designed to be a rectangular stainless steel shell, a sample and a detector are arranged in the irradiation monitoring pipe, the bottom of the irradiation monitoring pipe is sealed by welding a bottom plug and the shell, the top of the irradiation monitoring pipe is sealed by welding a top plug and the shell, and the top plug is provided with a through hole communicated with the inside of the shell and used for filling inert gas into the irradiation monitoring pipe and finally sealing the irradiation monitoring pipe through a sealing plug so as to ensure the sealing performance of the irradiation monitoring pipe. The irradiation monitoring tube is fixed on an irradiation sample support of an internal component of the reactor pressure vessel through a top plug and a bottom plug, and the insertion and extraction operation of the irradiation monitoring tube is realized through a special tool.
The following disadvantages are mainly present:
1) The reactor is only suitable for a pressurized water reactor and is not suitable for a high-temperature gas cooled reactor;
2) The large-curvature bent pipe passage cannot be passed;
3) The irradiation monitoring length is limited by the bracket, and the number of loaded samples is limited;
4) The neutron irradiation monitoring of a certain height of the reactor core area can be realized only, and the neutron irradiation monitoring beyond the area cannot be realized.
In view of the above, it is necessary to provide a radiation monitoring device for a reactor pressure vessel of a high temperature gas cooled reactor nuclear power plant, which can be inserted into and pulled out from a bent pipe passage, has direction recognition, and can monitor a high temperature section and a low temperature section simultaneously.
Disclosure of Invention
The invention aims to: the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station can be inserted into and pulled out of a bent pipe channel, has direction recognition performance, and can monitor a high-temperature section and a low-temperature section simultaneously.
In order to achieve the above object, the present invention provides an irradiation monitoring device for a reactor pressure vessel of a high temperature gas cooled reactor nuclear power plant, comprising:
the irradiation monitoring pipe assembly comprises a plurality of irradiation monitoring pipe sections which are connected with each other, and a sample assembly is arranged in each irradiation monitoring pipe section; the two adjacent irradiation monitoring pipe sections are detachably connected through a connecting piece, and the two adjacent irradiation monitoring pipe sections can rotate through the connecting piece between the two adjacent irradiation monitoring pipe sections; and
and the rope is detachably connected to one end of the irradiation monitoring pipe assembly.
The irradiation monitoring pipe joint comprises a pipe body, a top plug and a bottom plug, wherein the top plug and the bottom plug are respectively fixed at two ends of the pipe body, the sample assembly is arranged in the pipe body, a through hole for sealing is formed in the bottom plug, and the through hole is sealed through a sealing element.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station, the upper end and the lower end of the pipe body are of cylindrical structures, the middle of the pipe body is of a rectangular structure, and an annular groove is formed in the upper cylindrical structure part.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station, two first lifting lugs are arranged on the top plug, and an opening is formed in each first lifting lug; preferably, a counter bore is further arranged in the middle of the top plug.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas-cooled reactor nuclear power station, the opening of the first lifting lug is a waist-shaped hole, and the two adjacent irradiation monitoring pipe sections can rotate along the long axis direction of the waist-shaped hole after being connected.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas-cooled reactor nuclear power station, when two adjacent irradiation monitoring pipe joints are connected, the second lifting lug on the bottom plug is positioned between the two first lifting lugs on the top plug and is connected through a connecting piece.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station, the bottom plug of the pipe joint of the last section of the irradiation monitoring pipe is a bottom plug without a lifting lug structure.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station, the sealing element comprises a screw and a stainless steel ball, and the stainless steel ball is embedded into the through hole of the bottom plug and is compressed and sealed by the screw.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station, the sample assembly comprises a sample, a filling block and a detector, wherein the upper part and the lower part of the filling block are respectively provided with the sample, the filling block is provided with an opening, and the detector is arranged in the opening of the filling block.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high temperature gas cooled reactor nuclear power station, at least two position-adjustable clamps are arranged on the rope and used for preventing the rope from being abraded.
As an improvement of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station, the rope is fixed by a fixing clamp.
Compared with the prior art, the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station has the following technical effects:
1) The irradiation monitoring pipe assembly is segmented and fixedly connected through bolts and nuts, so that the irradiation monitoring pipe assembly can be inserted into and pulled out of the bent pipe channel;
2) The first lifting lug of the pipe joint top plug of the irradiation monitoring pipe is provided with the waist-shaped hole, so that the irradiation monitoring pipe assembly can rotate in two directions, and the blockage of the irradiation monitoring pipe assembly during insertion and extraction is avoided;
3) The upper end and the lower end of the pipe joint of the irradiation monitoring pipe are cylindrical, so that the movement of the irradiation monitoring pipe assembly in the bent pipe is facilitated, and the blockage is prevented;
4) The middle of the pipe joint of the irradiation monitoring pipe is of a rectangular structure, so that the uniform irradiation of the sample in the pipe body can be realized;
5) The circular ring groove at the upper cylindrical part of the irradiation monitoring pipe joint ensures that the irradiation monitoring pipe joint has certain elasticity, and can prevent the hard collision between the irradiation monitoring pipe joint and the channel;
6) A counter bore is arranged in the middle of the top plug of the pipe joint of the irradiation monitoring pipe, and after the rope is broken, the counter bore can be used as a force application part of the irradiation monitoring pipe assembly, and the irradiation monitoring pipe assembly is pulled out by adopting a special tool;
7) The interior of the tube body of the irradiation monitoring tube joint is arranged in a square hole form, so that the arrangement of a sample assembly in the tube body is facilitated;
8) The pipe joint of the irradiation monitoring pipe adopts a sealing element with a thread structure, which can play a role in temporary sealing and can play a role in permanent sealing after welding;
9) The irradiation monitoring pipe assembly is connected with two ropes, so that redundancy is realized;
10 The rope is provided with two cylindrical hoops which prevent the rope from rubbing against the passage when in use;
11 The radiation monitoring tube assembly may be arranged at a high temperature section and a low temperature section, respectively, according to the temperature distribution of the reactor, in a structural form so as to perform overall monitoring.
Drawings
The irradiation monitoring device for the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant according to the present invention is described in detail below with reference to the accompanying drawings and the following detailed description, wherein:
fig. 1 is a schematic diagram of a reactor pressure vessel irradiation monitoring elbow channel structure.
Fig. 2 is a schematic structural diagram of a reactor pressure vessel irradiation monitoring device of a high temperature gas cooled reactor nuclear power plant of the present invention.
Fig. 3 is a schematic structural diagram of a single-section irradiation monitoring pipe joint of the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas-cooled reactor nuclear power plant.
Fig. 4 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 3.
Fig. 5 is a schematic structural diagram of a sample assembly of the irradiation monitoring device for the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant.
FIG. 6 is an exploded view of a sample assembly of the irradiation monitoring device for the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant according to the present invention.
Reference numerals:
10-an irradiation surveillance tube assembly; 12-irradiation monitoring pipe joint; 120-a tube body; 1200-a ring groove; 122-top plug; 1220-a first lifting lug; 1222-a counterbore; 1224-opening a hole; 124-bottom plug; 1240-a seal; 1242-a second lifting lug; 14-a sample assembly; 140-a sample; 142-a filler block; 144-a detector; 16-a connector; 20-a rope; 200-ring buckling; 22-retaining clip.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated for convenience in describing the invention and to simplify description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the product of the invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Referring to fig. 1 to 6, the irradiation monitoring apparatus for a reactor pressure vessel of a high temperature gas cooled reactor nuclear power plant according to the present invention includes:
the irradiation monitoring tube assembly 10 comprises a plurality of interconnected irradiation monitoring tube sections 12, wherein a sample assembly 14 is arranged in each irradiation monitoring tube section 12; wherein, two adjacent irradiation monitoring pipe joints 12 are detachably connected through a connecting piece 16, and the two adjacent irradiation monitoring pipe joints 12 can rotate through the connecting piece 16 therebetween; and
a cable 20 removably attached to one end of the radiation monitoring tube assembly 10, the other end of the cable 20 being suspended by a loop 200 from a suspension device on the top of the reactor pressure vessel when in use.
Referring to FIG. 2, a radiation monitoring tube assembly 10 includes a plurality of interconnected radiation monitoring tube sections 12, a plurality representing 2, 3, 4, 5 or more. Specifically, two adjacent irradiation monitoring pipe sections 12 are detachably connected by a connecting member 16, and in the illustrated embodiment, the connecting member 16 is a bolt and nut assembly, and the two irradiation monitoring pipe sections 12 can be rotated by a certain angle in one direction through the bolt therebetween.
With continued reference to fig. 1 and 2, during irradiation monitoring, the entire irradiation monitoring device is suspended in the reactor pressure vessel irradiation monitoring pipe elbow 001, one end of the irradiation monitoring pipe assembly 10 is connected to a rope 20, in the illustrated embodiment, the rope 20 is a steel wire rope, and the rope 20 is fixed by a fixing clip 22 after being connected to one end of the irradiation monitoring pipe assembly 10. Specifically, the lower portion of the rope 20 is connected to the first lifting lug 1220 on the upper portion of the irradiation monitoring pipe assembly 10 through the buckle 200, the upper portion of the rope 20 is hung on a hanging device on the top cover of the reactor pressure vessel through the buckle 200, and the rope 20 and the buckle 200 are respectively fixed through the fixing clips 22, and the position of the irradiation monitoring pipe assembly 10 in the elbow channel 001 of the reactor pressure vessel can be determined through the length of the rope 20.
The reactor pressure vessel irradiation monitoring pipe elbow passage 001 comprises a bent pipe 002 and a guide horn cover 003, wherein the upper end and the lower end of the bent pipe 002 are connected with a straight pipe section 004. The rope 20 position that corresponds at crooked pipeline 002 section is provided with two cylindrical clamps 24, and the clamp 24 is located crooked pipeline 002's upper and lower both ends position, can prevent rope 20 and return bend passageway 001 inner wall direct contact and produce wearing and tearing, and two cylindrical clamps 24 can be adjusted according to crooked pipeline 002's length. In other embodiments of the present invention, the band 24 may be a band of other shapes, such as spherical, ellipsoidal, etc., and the cable 20 may be a cable of other forms, such as a chain.
Referring to fig. 3, the irradiation monitoring pipe 12 includes a pipe body 120, a top plug 122 and a bottom plug 124, the top plug 122 and the bottom plug 124 are respectively fixed at two ends of the pipe body 120, specifically, fixed at two ends of the pipe body 120 by welding, and the sample assembly 14 is placed in the pipe body 120.
Preferably, the upper and lower ends of the tube body 120 are cylindrical, the middle is rectangular, and the upper cylindrical portion is provided with the annular groove 1200, so that the upper and lower ends are cylindrical, which is beneficial to the movement of the irradiation monitoring tube assembly 10 in the bent tube 002 and prevents jamming; by providing the annular groove 1200, it has a certain elasticity, and can prevent hard collision between the irradiation monitoring pipe joint 12 and the elbow passage 001. The bottom plug 124 is provided with a through hole for sealing, and the through hole is sealed by a seal 1240. Specifically, after the sample assembly 14 is placed within the rectangular configuration of the tubular body 120 and the top plug 122 and bottom plug 124 are welded together, helium gas is introduced into the tubular body 120 and is finally welded and sealed by the seal 1240.
With continued reference to fig. 3, the seal 1240 is a combination of a screw and a stainless steel ball, the sealing through hole of the bottom plug 124 is a threaded hole, the stainless steel ball is inserted into the threaded hole, the screw is tightened to perform a compression seal, and the seal 1240 serves as a temporary seal and is finally welded to serve as a permanent seal.
Further, each top plug 122 is provided with two first lifting lugs 1220, and a counter bore 1222 is formed in the middle of the top plug 122 of at least the uppermost irradiation monitoring tube 12, so that by providing the counter bore 1222, even after the cable 20 is broken, the counter bore 1222 can serve as a force application part of the irradiation monitoring tube assembly 10, and the irradiation monitoring tube assembly 10 can be pulled out by using a special tool. The top plugs 122 of the remaining irradiation monitor tube tubulars 12 may be provided with counterbores 1222 as desired.
The bottom plug 124 comprises a bottom plug with a single-lifting-lug structure and a bottom plug without a lifting-lug structure, specifically, as shown in fig. 2 and fig. 3, the bottom plug of the last irradiation monitoring pipe section 12 is a bottom plug without a lifting-lug structure, the bottom plugs 124 of the other irradiation monitoring pipe sections 12 are bottom plugs with a single-lifting-lug structure provided with a second lifting lug 1242, and by arranging the second lifting lug 1242 on the bottom plug 124, it is convenient for two adjacent irradiation monitoring pipe sections 12 to be connected through the lifting lugs of the top plug 122 and the bottom plug 124 and the connecting member 16.
Specifically, when two adjacent irradiation monitoring pipe joints 12 are connected, the second lifting lug 1242 on the bottom plug 124 is located between the two first lifting lugs 1220 on the top plug 122, so that the three lifting lugs are arranged side by side, and a bolt is inserted into an opening on the three lifting lugs and then connected through a matched nut.
Preferably, the openings 1224 of the first ears 1220 of the top plug 122 are slotted holes, and the two irradiation monitoring pipe sections 12 can be connected by a small rotation angle along the long axis of the slotted holes.
As shown in fig. 3 and 4, the tube 120 has a rectangular hole therein, and the sample assembly 14 is placed in the rectangular hole of the tube 120, so as to achieve uniform irradiation of the sample in the irradiation monitoring tube section 12.
Referring to fig. 5 and 6, the sample assembly 14 includes a sample 140, a fill block 142, and a detector 144, the detector 144 includes a temperature detector and a dose detector, and the sample 140 is disposed on the upper and lower portions of the fill block 142, respectively, to form a sandwich structure. The sample 140 and the filling block 142 are both cubic structures, and one side of the filling block 142 is provided with an opening, and the detector 144 is placed in the opening of the filling block 142 and is plugged with a plug to prevent the detector 144 from falling out.
As shown in fig. 2 and fig. 3, since the top plug 122 on the uppermost irradiation monitoring pipe joint 12 is provided with two first lifting lugs 1220, two ropes 20 are provided to be connected to the two first lifting lugs 1220, respectively, after the ropes 20 pass through the openings of the first lifting lugs 1220, the ropes are fixed by the fixing clips 22, and two cylindrical hoops 24 are respectively sleeved on the two ropes 20, the positions of the hoops 24 can be adjusted as required, and are mainly located at the upper and lower ends of the bent pipe 002, so as to prevent the ropes 20 from directly contacting the inner wall of the bent pipe passage 001 to cause abrasion. By connecting one rope 20 to each of the two first lifting eyes 1220 at the uppermost end of the irradiation monitoring tube assembly 10, the whole device has redundancy, and irradiation monitoring can be performed even when one of the ropes 20 is broken. Since the irradiation monitoring tube assembly 10 is connected with the rope 20, the irradiation monitoring tube assembly 10 can be disposed at a high temperature section and a low temperature section, respectively, for overall monitoring.
Compared with the prior art, the irradiation monitoring device for the reactor pressure vessel of the high-temperature gas cooled reactor nuclear power station has the following beneficial technical effects:
1) The irradiation monitoring pipe assembly 10 is segmented and fixedly connected through bolts and nuts, so that the irradiation monitoring pipe assembly 10 can be inserted into and pulled out of a bent pipe channel;
2) The first lifting lug 1220 of the top plug 122 of the irradiation monitoring pipe joint 12 is provided with a kidney-shaped hole, so that the irradiation monitoring pipe assembly 10 can rotate in two directions, and the blockage caused by the insertion and the extraction of the irradiation monitoring pipe assembly 10 is avoided;
3) The upper end and the lower end of the pipe joint 12 of the irradiation monitoring pipe are cylindrical, so that the movement of the irradiation monitoring pipe assembly 10 in a bent pipe is facilitated, and jamming is prevented;
4) The middle of the irradiation monitoring pipe joint 12 is of a rectangular structure, so that the uniform irradiation of the sample in the pipe body 120 can be realized;
5) The circular ring groove at the upper cylindrical part of the irradiation monitoring pipe joint 12 ensures that the circular ring groove has certain elasticity, and can prevent the hard collision between the irradiation monitoring pipe joint 12 and a channel;
6) A counter bore 1222 is arranged in the middle of the top plug 122 of the irradiation monitoring pipe joint 12, after the rope 20 is broken, the counter bore 1222 can be used as a force application part of the irradiation monitoring pipe assembly 10, and the irradiation monitoring pipe assembly 10 is pulled out by a special tool;
7) The interior of the tube body 120 of the irradiation monitoring tube joint 12 is provided with a square hole form, so that the arrangement of the sample assembly 14 in the tube body 120 is convenient;
8) The irradiation monitoring pipe joint 12 adopts a sealing member 1240 with a thread structure, which can play a role in temporary sealing and can play a role in permanent sealing after welding;
9) The irradiation monitoring tube assembly 10 is connected with two ropes 20, and redundancy is achieved;
10 Rope 20 is provided with two cylindrical clips 24 which prevent the rope 20 from rubbing against the passage in use;
11 The radiation monitoring tube assembly 10 is constructed in such a manner that the radiation monitoring tube assembly 10 can be respectively disposed at a high temperature section and a low temperature section according to the temperature distribution of the reactor for overall monitoring.
The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (11)
1. A radiation monitoring device for a reactor pressure vessel of a high-temperature gas cooled reactor nuclear power station is characterized by comprising:
the irradiation monitoring pipe assembly comprises a plurality of irradiation monitoring pipe sections which are connected with each other, and a sample assembly is arranged in each irradiation monitoring pipe section; the two adjacent irradiation monitoring pipe sections are detachably connected through a connecting piece, the connecting piece is formed by a bolt and a nut assembly, and the two adjacent irradiation monitoring pipe sections can rotate through the connecting piece between the two adjacent irradiation monitoring pipe sections; and
and the rope is detachably connected to one end of the irradiation monitoring pipe assembly.
2. The irradiation monitoring device of the reactor pressure vessel of the high-temperature gas-cooled reactor nuclear power station as recited in claim 1, wherein the irradiation monitoring pipe joint comprises a pipe body, a top plug and a bottom plug, the top plug and the bottom plug are respectively fixed at two ends of the pipe body, the sample assembly is arranged in the pipe body, the bottom plug is provided with a through hole for sealing, and the through hole is sealed through a sealing element.
3. The irradiation monitoring device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as recited in claim 2, wherein the upper and lower ends of the tube body are cylindrical structures, the middle of the tube body is rectangular, and an annular groove is formed in the upper cylindrical structure.
4. The irradiation monitoring device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as recited in claim 2, wherein two first lifting lugs are arranged on the top plug, and the first lifting lugs are provided with openings.
5. The irradiation monitoring device for the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as claimed in claim 2, wherein a counter bore is further arranged in the middle of the top plug.
6. The irradiation supervision device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant according to claim 4, wherein the opening of the first lifting lug is a kidney-shaped hole, and the two adjacent irradiation supervision pipe sections can rotate along the long axis direction of the kidney-shaped hole after being connected.
7. The irradiation monitoring device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as recited in claim 6, wherein a second lifting lug is arranged on the bottom plug, and when two adjacent irradiation monitoring pipe joints are connected, the second lifting lug on the bottom plug is positioned between the two first lifting lugs on the top plug and is connected through a connecting piece.
8. The irradiation monitoring device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as claimed in claim 2, wherein the sealing element comprises a screw and a stainless steel ball, and the stainless steel ball is embedded in the through hole of the bottom plug and is compressed and sealed by the screw.
9. The irradiation monitoring device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as claimed in claim 2, wherein the sample assembly comprises a sample, a filling block and a detector, the upper part and the lower part of the filling block are respectively provided with the sample, the filling block is provided with an opening, and the detector is arranged in the opening of the filling block.
10. The irradiation monitoring device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as claimed in claim 1, wherein at least two position-adjustable clamps are provided on the rope for preventing the rope from being worn.
11. The irradiation monitoring device of the reactor pressure vessel of the high temperature gas cooled reactor nuclear power plant as claimed in claim 10, wherein the rope is fixed by a fixing clip.
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| CN201910046165.5A CN109817358B (en) | 2019-01-17 | 2019-01-17 | Irradiation monitoring device for reactor pressure vessel of high-temperature gas cooled reactor nuclear power station |
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| CN201910046165.5A CN109817358B (en) | 2019-01-17 | 2019-01-17 | Irradiation monitoring device for reactor pressure vessel of high-temperature gas cooled reactor nuclear power station |
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| CN110600149B (en) * | 2019-09-10 | 2022-09-16 | 上海群力紧固件制造有限公司 | Reactor pressure vessel bottom plug |
| CN110600146A (en) * | 2019-09-25 | 2019-12-20 | 中核能源科技有限公司 | Ball passing controller applied to high-temperature gas cooled reactor |
| CN111610012B (en) * | 2020-06-04 | 2022-03-25 | 中国核动力研究设计院 | Irradiation monitoring tube test device and use method |
| CN111816334A (en) * | 2020-07-20 | 2020-10-23 | 中国核动力研究设计院 | Irradiation monitoring tube |
| CN112113855A (en) * | 2020-09-18 | 2020-12-22 | 一重集团大连核电石化有限公司 | Steam pressure test method applied to irradiation monitoring pipe |
| CN112582090B (en) * | 2020-12-14 | 2022-06-24 | 华能山东石岛湾核电有限公司 | Material taking and guiding device for fuel element of pebble-bed high-temperature gas cooled reactor |
| CN114005560B (en) * | 2021-10-22 | 2023-07-04 | 华能核能技术研究院有限公司 | Ball stop device falls in high temperature gas cooled reactor absorption ball and ball bed formula high temperature gas cooled reactor |
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| CN105244063B (en) * | 2015-09-08 | 2017-08-01 | 中国核动力研究设计院 | A kind of real heap for presurized water reactor irradiates structure |
| US9881708B1 (en) * | 2017-04-12 | 2018-01-30 | Consolidated Nuclear Security, LLC | Radiation area monitor device and method |
| CN107705862B (en) * | 2017-09-21 | 2019-11-05 | 中广核检测技术有限公司 | Heat Exchanger of Nuclear Power Plant water chamber positions plate welding seams automatic scanning device |
| CN212303093U (en) * | 2019-11-26 | 2021-01-05 | 中广核工程有限公司 | Reactor pressure vessel irradiation monitoring device |
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