CN108242272B - A shielding protector for putting waste liquid storage tank sample high - Google Patents

A shielding protector for putting waste liquid storage tank sample high Download PDF

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Publication number
CN108242272B
CN108242272B CN201611207656.6A CN201611207656A CN108242272B CN 108242272 B CN108242272 B CN 108242272B CN 201611207656 A CN201611207656 A CN 201611207656A CN 108242272 B CN108242272 B CN 108242272B
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Prior art keywords
work box
plate
sampling
sampling work
guide pipe
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CN201611207656.6A
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CN108242272A (en
Inventor
陈勇
阙昌林
吉头杰
张国林
靳东奎
朱盈喜
张鸿
柴世全
刘英杰
甘淑霞
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404 Co Ltd China National Nuclear Corp
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404 Co Ltd China National Nuclear Corp
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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00Transportable or portable shielded containers
    • G21F5/002Containers for fluid radioactive wastes
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00Transportable or portable shielded containers
    • G21F5/06Details of, or accessories to, the containers
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00Transportable or portable shielded containers
    • G21F5/06Details of, or accessories to, the containers
    • G21F5/14Devices for handling containers or shipping-casks, e.g. transporting devices loading and unloading, filling of containers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A shielding protection device for sampling a high-level radioactive waste liquid storage tank is characterized in that a sampling working box is positioned on a working box bracket, the sampling working box is in a hollow box structure surrounded by an upper plate, a lower plate, a front inclined plate, a rear plate, a left plate and a right plate, and lead with a certain thickness is poured in the middle of each plate; the sword type mechanical arm A and the sword type mechanical arm B are arranged on the front plate of the sampling work box in parallel, the operating handles of the sword type mechanical arm A and the sword type mechanical arm B face outwards, and the mechanical arms face inwards; the shielding and sealing peeping window is positioned at the upper parts of the sword-shaped manipulator A and the sword-shaped manipulator B; the illuminating device A and the illuminating device B are positioned on the upper plate of the sampling work box, and illuminating lamps of the illuminating device A and the illuminating device B are installed towards the inside of the sampling work box; the upper guide pipe A and the lower guide pipe B are respectively positioned in the middle of the upper plate and the lower plate of the sampling work box, the upper guide pipe A vertically penetrates into the sampling work box, and the lower guide pipe B vertically penetrates out of the work box.

Description

A shielding protector for putting waste liquid storage tank sample high
Technical Field
The invention belongs to a shielding and protecting device, and particularly relates to a shielding and protecting device for sampling a high-level radioactive waste liquid storage tank.
Background
In the process of temporarily storing high-level waste liquid generated by a spent fuel post-treatment plant in an acidic system for a long time, the physical and chemical characteristics of the waste liquid can change along with the storage time, and certain correlation is shown with the liquid level in a storage tank. Before the high-level radioactive waste liquid storage tank is decommissioned and treated, a high-level radioactive waste liquid source item needs to be sampled and analyzed. Wherein, the sampling needs to be positioned and sampled to the high-level radioactive waste liquid with different heights, and the quantitative parameters of the sampling are determined by the analysis requirements.
The high level radioactive liquid waste is sampled usually in a vacuum sampling mode all the year round, and although the sampling can be realized, the sampling method has certain disadvantages: the sampling process in such a mode causes the problems of high space dosage field, large secondary waste generation amount, excessive vacuum suction sample amount, difficult control of sample amount, easy occurrence of irreversible high-level waste liquid leakage, poor sampling representativeness and the like. In recent years, mechanical forced sampling performed on a high-level radioactive waste liquid storage tank has the advantages of controllable sampling amount, easy adjustment of sampling position, low spatial dose field in the sampling operation process and the like, so that the sampling mode of the high-level radioactive waste liquid storage tank is more biased to mechanical forced sampling. Such sampling methods require the deployment of sophisticated shielding guards.
Disclosure of Invention
The invention aims to: the shielding and protecting device for sampling the high-level radioactive waste liquid storage tank is used for shielding and protecting the sampling process and reducing the dosage accepted by an operator as much as possible.
The technical scheme of the invention is as follows: a shielding protection device for sampling a high-level radioactive waste liquid storage tank is characterized in that a sampling working box is positioned on a working box bracket, the sampling working box is in a hollow box structure surrounded by an upper plate, a lower plate, a front inclined plate, a rear plate, a left plate and a right plate, and lead with a certain thickness is poured in the middle of each plate;
the sword type mechanical arm A and the sword type mechanical arm B are arranged on the front plate of the sampling work box in parallel, the operating handles of the sword type mechanical arm A and the sword type mechanical arm B face outwards, and the mechanical arms face inwards; the shielding and sealing peeping window is positioned at the upper parts of the sword-shaped manipulator A and the sword-shaped manipulator B; the illuminating device A and the illuminating device B are positioned on the upper plate of the sampling work box, and illuminating lamps of the illuminating device A and the illuminating device B are installed towards the inside of the sampling work box; the upper guide pipe A and the lower guide pipe B are respectively positioned in the middle of the upper plate and the lower plate of the sampling work box, the upper guide pipe A vertically penetrates into the sampling work box, and the lower guide pipe B vertically penetrates out of the work box.
The pickling system comprises a pickling opening, a pickling solution channel and a spraying device; wherein, the pickling mouth is located sample work box upper plate, in last stand pipe A left side, introduces spray set with the pickle through the pickle passageway, and spray set hugs closely under last stand pipe A.
The steel wire rope take-up and pay-off device is positioned on the left side of the acid pickling system and consists of a steel wire rope take-up and pay-off handle, a fixed pulley, a steel wire rope guide pulley, a steel wire rope positioning clamp and a steel wire rope positioning clamp handle; the steel wire rope winding and unwinding handle and the steel wire rope positioning clamp handle are led in by the upper plate of the sampling work box, the steel wire rope is fixed and wound on the fixed pulley, the steel wire rope is guided to the lower end of the guide pipe A on the sampling work box through the steel wire rope guide pulley, and the steel wire rope winding and unwinding handle is rotated, so that the fixed pulley is rotated, and the winding and unwinding of the steel wire rope are realized.
The jib positioning device is located the stand pipe A right side, it includes jib location operating handle, the locator card, jib locator card guide rail, jib location operating handle is located outside the sample work box upper plate, jib location operating handle connects jib locator card pipe, and jib locator card is connected to jib locator card guide rail other end, and jib locator card is connected with last stand pipe A, jib location operating handle rotates and drives the locator card and reciprocates for jib positioner card dies or is not hard up.
The shielding sealing side door is positioned on the left plate of the sampling work box; the universal tray is positioned on the inner side of the lower plate of the sampling work box.
The work box bracket is made of stainless steel.
The shielding and sealing peeping window is positioned at the upper parts of the sword type manipulator A and the sword type manipulator B, and the plane of the shielding and sealing peeping window and the front plate of the sampling work box form an included angle of 60 degrees towards the back.
The outward ends of the upper guide pipe A and the lower guide pipe B are both provided with flange joints, and the inward ends of the upper guide pipe A and the lower guide pipe B are spaced at a certain distance.
The sampling work box is made of inner and outer stainless steel materials.
The invention has the following remarkable effects: the device can realize automobile hoisting under the condition of limited hoisting space, the minimum hoisting hole is 1200mm multiplied by 1200mm, the whole weight of the device is not more than 4t, the maximum diameter of the sampler is less than 50mm, and the height of the sampler is less than 120 mm;
the sampling object with extremely strong radioactivity and large acidity can be operated in a non-direct contact way;
the dosage of a sampling operation space is controlled, and the irradiated dosage of an operator is controlled, wherein the space dosage rate at 1m from the sampling working box is less than 5 mu Sv/h, and the space dosage rate at 1m from the transfer container is less than 5 mu Sv/h;
drawings
FIG. 1 is a schematic view of a shielding and protecting device for sampling a high level radioactive waste storage tank according to the present invention;
FIG. 2 is a side view of the shielding and protecting device for sampling high level radioactive waste storage tank according to the present invention
FIG. 3 is a top view of the shielding and protecting device for sampling high level radioactive waste storage tank according to the present invention
FIG. 4 is a top view of the shielding and protecting device for sampling high level radioactive waste storage tank according to the present invention
FIG. 5 is a schematic view of the acid washing system of the shielding protection device for sampling the high level radioactive waste liquid storage tank according to the present invention
FIG. 6 is a schematic view of a steel wire rope winding and unwinding device of the shielding and protection device for sampling the high-level radioactive waste liquid storage tank according to the invention
FIG. 7 is a schematic view of a shield and guard boom positioning device for high level waste storage tank sampling according to the present invention
In the figure: 1 sampling work box, 2 work box supports, 3 sword type manipulator B, 4 illuminator B, 5 lower guide tubes, 6 suspender positioning operation handles, 7 fixed pulleys, 8 pickling ports, 9 pickling solution channels, 10 spray devices, 11 steel wire rope guide pulleys, 12 steel wire rope positioning cards, 13 steel wire rope positioning card handles, 14 positioning cards, 15 sword type manipulator A, 16 shielding sealing peep windows, 17 illuminator A, 18 pickling systems, 19 suspender positioning devices, 20 steel wire rope winding and unwinding devices, 21 upper guide tubes A, 22 shielding sealing side doors, 23 universal trays, 24 suspender positioning card guide rails, 25 steel wire rope winding and unwinding handle handles, 25 steel wire rope winding and unwinding devices
Detailed Description
The design of the present invention is described in further detail below with reference to the attached drawings and specific examples.
As shown in fig. 1, 2, 3 and 4, the sampling work box 1 is located on the work box support 2, the sampling work box 1 is made of inner and outer stainless steel materials and serves as a frame, an empty box structure is defined by an upper plate, a lower plate, a front inclined plate, a rear plate, a left plate and a right plate, lead with a certain thickness is poured in the middle of each plate, and the work box support 2 is made of stainless steel materials.
The sword type manipulator A15 and the sword type manipulator B3 are arranged on the front plate of the sampling work box 1 in parallel, the operating handles of the sword type manipulator A15 and the sword type manipulator B3 face outwards, and the manipulators face inwards; the shielding and sealing peep window 16 is positioned at the upper parts of the sword-shaped manipulator A15 and the sword-shaped manipulator B3, and the plane of the shielding and sealing peep window and the front plate of the sampling work box (1) form an included angle of 60 degrees towards the back; the lighting device A17 and the lighting device B4 are positioned on the upper plate of the sampling work box 1, and the lighting lamps of the lighting device A17 and the lighting device B4 are all installed towards the inside of the sampling work box 1; the upper guide pipe A21 and the lower guide pipe B5 are respectively positioned in the middle of the upper plate and the lower plate of the sampling working box 1, the upper guide pipe A21 vertically penetrates into the sampling working box 1, the lower guide pipe B5 vertically penetrates out of the working box 1, flange connectors are respectively arranged at the outward ends of the upper guide pipe A21 and the lower guide pipe B5, and the inward ends of the flange connectors are separated by a certain distance;
as shown in fig. 5, the pickling system 18 includes a pickling opening 8, a pickling solution passage 9, and a shower device 10. Wherein, the pickling opening 8 is positioned on the upper plate of the sampling work box 1, the pickling solution is introduced into the spray device 10 through the pickling solution channel 9 on the left side of the upper guide pipe A21, and the spray device 10 is tightly attached to the right lower part of the upper guide pipe A21.
The steel wire rope reeling and unreeling device 20 is located on the left side of the acid pickling system 18 and consists of a steel wire rope reeling and unreeling handle 25, a fixed pulley 7, a steel wire rope guide pulley 11, a steel wire rope positioning clamp 12 and a steel wire rope positioning clamp handle 13 as shown in fig. 6. The steel wire rope take-up and pay-off handle 25 and the steel wire rope positioning clamp handle 13 are led in by the upper plate of the sampling work box 1, the steel wire rope is fixed and wound on the fixed pulley 7, the steel wire rope is guided to the lower end of a guide pipe A21 on the sampling work box through the steel wire rope guide pulley 11, the steel wire rope take-up and pay-off handle 25 is rotated, the fixed pulley 7 is rotated, and the steel wire rope take-up and pay-.
The boom positioning device 19 is located on the right side of the upper guide tube a21, as shown in fig. 7, it includes the boom positioning operation handle 6, the locator card 14, the boom locator card guide rail 24, the boom positioning operation handle 6 is located outside the upper plate of the sampling work box 1, the boom positioning operation handle 6 is connected with the boom locator card guide tube 24, the boom locator card 14 is connected to the other end of the boom locator card guide rail 24, and the boom locator card 14 is connected with the upper guide tube a21, the boom positioning operation handle 6 rotates to drive the locator card 14 to move up and down, so that the boom positioning device 19 is locked or loosened.
As shown in fig. 4, a shield sealing side door 22 is located on the left plate of the sampling work box 1; the universal tray 23 is positioned inside the lower plate of the sampling work box 1. The accessories are all made of stainless steel materials, and the sealing position adopts a rubber soft pad which is resistant to certain acidity corrosion and certain dose irradiation.

Claims (3)

1. The utility model provides a shielding protector that is used for high-level radioactive liquid waste storage tank to sample which characterized in that: the sampling work box (1) is positioned on the work box bracket (2), the sampling work box (1) is enclosed into an empty box structure by an upper plate, a lower plate, a front inclined plate, a rear plate, a left plate and a right plate, and lead with certain thickness is poured in the middle of each plate;
the sword type mechanical arm A (15) and the sword type mechanical arm B (3) are arranged on the front plate of the sampling work box (1) in parallel, the operating handles of the sword type mechanical arm A and the sword type mechanical arm B face outwards, and the mechanical arms face inwards; the illuminating device A (17) and the illuminating device B (4) are positioned on the upper plate of the sampling work box (1), and illuminating lamps of the illuminating device A (17) and the illuminating device B (4) are installed towards the inside of the sampling work box (1); the upper guide pipe A (21) and the lower guide pipe B (5) are respectively positioned in the middle of the upper plate and the lower plate of the sampling work box (1), the upper guide pipe A (21) vertically penetrates into the sampling work box (1), and the lower guide pipe B (5) vertically penetrates out of the sampling work box (1);
the suspender positioning device (19) is positioned on the right side of the upper guide pipe A (21) and comprises a suspender positioning operating handle (6), a suspender positioning clamp (14) and a suspender positioning clamp guide rail (24), wherein the suspender positioning operating handle (6) is positioned outside the upper plate of the sampling work box (1), the suspender positioning operating handle (6) is connected with the suspender positioning clamp guide rail (24), the suspender positioning clamp (14) is connected to the other end of the suspender positioning clamp guide rail (24), the suspender positioning clamp (14) is connected with the upper guide pipe A (21), and the suspender positioning operating handle (6) rotates to drive the suspender positioning clamp (14) to move up and down, so that the suspender positioning device (19) is clamped or loosened;
the shielding sealing side door (22) is positioned on the left plate of the sampling work box (1); the universal tray (23) is positioned on the inner side of the lower plate of the sampling work box 1;
the work box bracket (2) is made of stainless steel;
the shielding and sealing peeping window (16) is positioned at the upper parts of the sword-shaped manipulator A (15) and the sword-shaped manipulator B (3), and the plane of the shielding and sealing peeping window and the front plate of the sampling work box (1) form an included angle of 60 degrees towards the back;
the outward ends of the upper guide pipe A (21) and the lower guide pipe B (5) are respectively provided with a flange interface, and the inward ends thereof are spaced at a certain distance;
the sampling work box (1) is made of inner and outer stainless steel materials.
2. A shielding guard for use in sampling a high level waste reservoir, according to claim 1, wherein: the pickling system (18) comprises a pickling opening (8), a pickling solution channel (9) and a spraying device (10); wherein, the pickling opening (8) is positioned on the upper plate of the sampling work box (1), the pickling solution is introduced into the spraying device (10) through the pickling solution channel (9) on the left side of the upper guide pipe A (21), and the spraying device (10) is tightly attached to the right lower part of the upper guide pipe A (21).
3. A shielding and shielding device for use in sampling high level waste liquid storage tanks, according to claim 2, wherein: the steel wire rope take-up and pay-off device (20) is positioned on the left side of the acid washing system (18) and consists of a steel wire rope take-up and pay-off handle (25), a fixed pulley (7), a steel wire rope guide pulley (11), a steel wire rope positioning clamp (12) and a steel wire rope positioning clamp handle (13); the steel wire rope winding and unwinding handle (25) and the steel wire rope positioning clamp handle (13) are introduced from the upper plate of the sampling work box (1), the steel wire rope is fixed and wound on the fixed pulley (7), the steel wire rope is guided to the lower end of the upper guide pipe A (21) of the sampling work box through the steel wire rope guide pulley (11), and the steel wire rope winding and unwinding handle (25) is rotated, so that the fixed pulley (7) rotates, and the winding and unwinding of the steel wire rope are realized.
CN201611207656.6A 2016-12-23 2016-12-23 A shielding protector for putting waste liquid storage tank sample high Active CN108242272B (en)

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CN108242272B true CN108242272B (en) 2021-05-18

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109406207B (en) * 2018-11-12 2024-06-04 中核四川环保工程有限责任公司 Radioactive sediment sampling system of radioactive waste liquid storage tank and application method thereof
CN113380435A (en) * 2021-06-23 2021-09-10 中国核动力研究设计院 Containing box for He-3 gas loop

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2193583Y (en) * 1994-04-28 1995-03-29 刘景尧 Radioisotope split charging apparatus
CN201049734Y (en) * 2007-02-08 2008-04-23 北京神州贝克科技有限公司 Automatic split charging device for radioactive isotope
CN102831943A (en) * 2012-09-11 2012-12-19 依贝伽射线防护设备科技(上海)有限公司 Iodine radioactive drug split charging device
CN203026180U (en) * 2012-12-31 2013-06-26 深圳市海博科技有限公司 Source loading device
CN204558038U (en) * 2015-05-05 2015-08-12 郑州波尔登防护用品有限公司 A kind of isotope packaging device
CN205050568U (en) * 2015-09-28 2016-02-24 中国辐射防护研究院 Screened room

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003034444A1 (en) * 2001-10-15 2003-04-24 Mallinckrodt Inc. Radiopharmaceutical capsule dispensing system
US7750328B2 (en) * 2006-10-27 2010-07-06 Draximage General Partnership Filling system for potentially hazardous materials

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2193583Y (en) * 1994-04-28 1995-03-29 刘景尧 Radioisotope split charging apparatus
CN201049734Y (en) * 2007-02-08 2008-04-23 北京神州贝克科技有限公司 Automatic split charging device for radioactive isotope
CN102831943A (en) * 2012-09-11 2012-12-19 依贝伽射线防护设备科技(上海)有限公司 Iodine radioactive drug split charging device
CN203026180U (en) * 2012-12-31 2013-06-26 深圳市海博科技有限公司 Source loading device
CN204558038U (en) * 2015-05-05 2015-08-12 郑州波尔登防护用品有限公司 A kind of isotope packaging device
CN205050568U (en) * 2015-09-28 2016-02-24 中国辐射防护研究院 Screened room

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