CN209822293U - Combined radiation shielding hanging rack device - Google Patents
Combined radiation shielding hanging rack device Download PDFInfo
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- CN209822293U CN209822293U CN201821153537.1U CN201821153537U CN209822293U CN 209822293 U CN209822293 U CN 209822293U CN 201821153537 U CN201821153537 U CN 201821153537U CN 209822293 U CN209822293 U CN 209822293U
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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
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Abstract
The utility model relates to a nuclear facilities radiation protection technical field, concretely relates to modular radiation shield stores pylon device. The utility model provides a nuclear power station adopt the problem that exists in the aspect of stability, security, convenience, commonality etc. when building the radioactive hotspot shielding mode of shielding wall. The utility model relates to a modular radiation shield stores pylon device, wholly be trapezium structure, divide into support body and lower support body, upper and lower support body is through upper and lower support body connecting seat fixed connection, the lower support body is including fixed couple, rotatory couple, telescopic cross beam and longitudinal support right angle fixed connection, support body welding floor is fan-shaped, fixed connection is on longitudinal support and telescopic cross beam, hinged joint is passed through to folding landing leg and longitudinal support bottom, horizontal folding landing leg and longitudinal support bottom fixed connection control connecting seat and longitudinal support fixed connection. The utility model discloses above-mentioned four-point problem can be solved to realize the shielding requirement of different length, height, angle.
Description
Technical Field
The utility model relates to a nuclear facilities radiation protection technical field, concretely relates to modular radiation shield stores pylon device.
Background
Almost all the radioactivity of the pressurized water reactor nuclear power station comes from an active area of a reactor loaded with fuel assemblies, and with the operation of the nuclear power station, corrosion activation products are continuously deposited on the inner walls of equipment, valves and pipelines of a main system and an auxiliary system thereof to form points or local positions with strong radioactivity, which are often called as radioactive hot spots (hot spots for short). The radiation level of the hot spots is high and not easy to eliminate, the formed strong penetrating radiation is the main reason of the increase of the radiation level of partial buildings or areas of the nuclear power plant, high radiation dose can be caused to maintainers near the hot spots, small dose accumulation can be caused to other workers passing by the hot spots, and therefore the integral collective dose of the power plant is increased.
In order to reduce the influence of the radioactive heat points on the radiation dose of personnel and ensure the radiation safety of field workers, temporary shielding is a common optimization measure in the radiation protection management of the nuclear power station. For some areas with complex structures and relatively concentrated hot spot positions, the overall shielding is generally implemented by adopting a shielding wall building mode, and although the current shielding walls are built in a plurality of ways, the following problems in general need to be considered and perfected:
(1) the stability problem is that in the selection of the material for temporary shielding of the nuclear power plant, a lead material with better economical efficiency is applied in a large quantity, but the lead shielding material is generally heavier, and the shielding wall needs to have enough stability after being built so as to avoid the damage of personnel or equipment caused by toppling over, so that the stability of the shielding wall needs to be fully evaluated.
(2) The method has the advantages that safety is high, the shielding wall is required to be built near a radioactive hotspot, and radiation safety assessment is required to be carried out on radiation dose received by workers who build and remove the shielding wall.
(3) The convenience problem requires that the shielding device has convenient nimble characteristics, reduces work load and operating time of staff near the hot spot, still requires simultaneously that the temporary shielding builds the back, should make things convenient for wholly to demolish or part demolish, can satisfy the needs of production operation and maintenance work.
(4) The universality problem requires that the shielding device can be matched with a lead shielding material commonly used in domestic nuclear power, so that the economical efficiency is improved, and meanwhile, the universal shielding device can meet the universal shielding requirements of different areas and different shielding performances.
(5) In addition, after the shielding wall is built, the shielding material is required to be prevented from deforming and generating gaps after being hung for a long time, so that the shielding performance is reduced.
Therefore, from the requirement of optimal management of radiation protection of a power station, it is necessary to design and manufacture a special ray shielding device which not only meets the radiation protection requirement on shielding performance, but also has strong safety and stability and can obviously reduce the radiation dose of shielding operators.
Disclosure of Invention
The technical solution problem of the utility model is that:
1. the problem of universality. The requirements of different shielding performances are met, and different shielding performance requirements can be met by hanging lead shielding materials with different thicknesses according to the dose rate level of a radiation source.
2. Stability problems. Since lead shielding materials are generally heavy, the shielding needs to be sufficiently stable to avoid injury to personnel or equipment due to toppling.
3. The safety problem. The main body part is arranged in a low radiation area so as to reduce the workload near a radioactive hot spot and reduce the radiation dose of an operator.
4. The convenience problem. The shielding device should be easy to disassemble and assemble, and the disassembling and assembling time of workers should be reduced as much as possible.
The technical solution of the utility model is that:
a combined radiation shielding hanging rack device comprises a fixed hook, a rotary hook, a left connecting seat, a telescopic crossbeam, a right connecting seat, an upper and a lower rack body connecting seats, a longitudinal folding supporting leg, a transverse folding supporting leg and a rack body welding ribbed plate, wherein, the whole trapezium structure that is of modular radiation shielding stores pylon device, divide into support body and lower support body, upper and lower support body is through upper and lower support body connecting seat fixed connection, the lower support body is including fixed couple, rotatory couple, telescopic cross beam and longitudinal support post right angle fixed connection, support body welding floor is fan-shaped, fixed connection is on longitudinal support post and telescopic cross beam, hinged joint is passed through to folding landing leg and longitudinal support post bottom, horizontal folding landing leg and longitudinal support post bottom fixed connection, left side connecting seat and longitudinal support post left side fixed connection, right side connecting seat and longitudinal support post right side fixed connection.
The telescopic cross beam is of a hollow cylindrical structure with hollow front and back surfaces, the telescopic section is inserted into the telescopic cross beam, and the fixed hook is fixedly connected to the upper surface of the telescopic cross beam.
The rotary hook is of a Y-shaped structure, and the bottom end of the rotary hook is provided with a fixing nut.
The through hole is formed in one end of the telescopic cross beam, the rotary hook penetrates through the through hole and is fixed to the telescopic cross beam, the groove is formed in the upper surface of the telescopic section, the through hole is formed in one end of the telescopic section, and the rotary hook penetrates through the through hole and is fixed to one end of the telescopic section.
The longitudinal folding supporting leg is composed of a cross rod and an inclined rod, the cross rod is connected with the bottom end of a longitudinal support column through a hinge, the middle of the inclined rod is connected with the cross rod through a hinge, the inclined rod is divided into an inner loop bar and an outer loop bar, the inner loop bar is movably connected with the longitudinal support column through a pin shaft, and the bottom of the outer loop bar is fixedly connected with a rubber pad foot.
The transverse folding supporting legs are fixedly connected to the bottom ends of the longitudinal pillars through hinges.
The upper frame body comprises a telescopic crossbeam and a longitudinal strut, and the handle is fixedly connected to the longitudinal strut.
The transverse folding supporting legs and the bottoms of the longitudinal upright posts are fixedly connected with pressure-bearing universal wheels.
Compared with the prior art, the utility model beneficial effect does:
1. and (4) universality. The cross beams of the upper and lower frame bodies of the hanger device are all designed in a hollow mode, the weight of the whole device is reduced, and the hanger device is provided with a convenient handle and is convenient to carry and move. The device is designed with a telescopic beam which is telescopic from the left side of the hanger device, and the shielding range can be expanded when the side edge of the hanger device is provided with an irregular obstacle. Two adjacent sets of combined radiation shielding hanger devices can be matched and linked at any angle. The lower support body can be used independently, and when a high radiation hotspot needs to be shielded, the upper support body is additionally arranged at the corresponding position of the lower support body to form an integral hanging frame device. Thereby realizing the universal expansion of the transverse direction and the longitudinal direction.
2. And (4) stability. The lower frame body is provided with 2 oblique supporting legs and 2 transverse supporting legs. 2 oblique supporting legs can be respectively unfolded towards the front side and the back side of the device by 90 degrees; the 2 transverse supporting legs can respectively rotate and fix towards the front and back of the device within the range of 0-90 degrees. 4 landing legs that positive and negative expand each other have realized the firm stability of stores pylon device, and 4 landing legs all can withdraw, reducible parking space.
3. And (4) safety. The assembly of the hanging rack device and the installation of the shielding material can be carried out in a low-radiation area, and then the whole hanging rack device is moved to a radioactive hot spot to be fixed so as to complete the construction of shielding measures. When the shielding device is dismounted, the shielding device is firstly released, moved to a low-radiation area integrally and then dismounted or temporarily stored and then reassembled. Because the main operation part is carried out in a low radiation area, the workload and the operation time near the hot spot can be obviously reduced, and the radiation dose of operators is reduced.
4. Convenience. The bottom of the lower frame body is provided with 4 pressure-bearing pulleys, a single pulley can bear 500Kg, the 4 pulleys can rotate for 360 degrees, and the integral movement and locking of the hanging frame device can be realized.
Drawings
FIG. 1 is a general view of a combined radiation shielding hanger assembly
FIG. 2 is a drawing of a frame mounting apparatus
FIG. 3 is a view of a lower frame
FIG. 4 the telescoping beam in an extended position
FIG. 5 shows the retractable beam in a retracted state
In the figure: 1. the support body comprises a fixed hook, 2 parts of a rotary hook, 3 parts of a left connecting seat, 4 parts of a telescopic cross beam, 5 parts of a pressure-bearing universal wheel, 6 parts of a right connecting seat, 7 parts of an upper support body connecting seat, a lower support body connecting seat, 8 parts of a handle, 9 parts of a support body welding rib plate, 10 parts of a longitudinal folding supporting leg, 11 parts of a transverse folding supporting leg and 12 parts of a longitudinal supporting column.
Detailed Description
(1) Radiation shielding scheme determination
And determining the range of shielding measures according to the spatial position and the influence area of the radioactive hot spot, and determining the number of the required radiation shielding supporting devices. And calculating the quantity of the shielding materials required to be adopted according to the actual dosage rate level of the position to be shielded, the expected dosage rate level and the lead equivalent of the shielding materials. At most 6 layers of standard lead shielding materials (3 layers on the front side and the back side) can be hung, 9 lead shielding materials can be hung on each hanger device in a single layer, 54 lead shielding materials can be hung on 6 layers, each standard lead shielding material weighs about 27Kg, and the weight of each hanger device can be loaded by about 2000 Kg. The 6 layers of standard lead shielding materials are equivalent to 30mm lead equivalent thickness, equivalent to 4-5 times of the half-value layer thickness of Cs-137 gamma rays and equivalent to 2-3 times of the half-value layer thickness of Co-60 gamma rays, and the quantity of the shielding materials can be increased or decreased according to the requirements in application so as to realize different shielding performance requirements.
(2) Radiation shield support device installation implementation
The invention is described in detail below with reference to the following figures and specific embodiments:
as shown in fig. 1, fig. 2 and fig. 3, a combined radiation shielding hanger device comprises an upper hanger body and a lower hanger body, the upper hanger body is fixedly connected with the lower hanger body part through an upper hanger body connecting seat 7 and a lower hanger body connecting seat 7, the upper hanger body and the lower hanger body comprise a fixed hook 1, a rotating hook 2, a telescopic cross beam 4 and a longitudinal strut 12, the telescopic cross beam 4 is fixedly connected with the longitudinal strut 12 at a right angle, a welding rib plate 9 of the hanger body is fan-shaped, the fixed connection is arranged on the longitudinal strut 12 and the telescopic cross beam 4, the bottom ends of a longitudinal folding landing leg 10 and the longitudinal strut 12 are connected through a hinge, the bottom ends of a transverse folding landing leg 11 and the longitudinal strut 12 are fixedly connected, the left side of. The longitudinal folding supporting leg 10 is composed of a cross rod and an oblique rod, the cross rod is connected with the bottom end of a longitudinal support column through a hinge, the middle of the oblique rod is connected with the cross rod through a hinge, the oblique rod is divided into an inner loop bar and an outer loop bar, the inner loop bar is movably connected with the longitudinal support column through a pin shaft, and the bottom of the outer loop bar is fixedly connected with a rubber pad foot. The transversely folding legs 11 are fixedly connected to the bottom ends of the longitudinal struts by hinges. The upper frame body comprises a telescopic crossbeam 4 and a longitudinal strut 12, and a handle 8 is fixedly connected to the longitudinal strut 12. The bottoms of the transverse folding supporting legs 11 and the longitudinal upright posts 12 are fixedly connected with a pressure-bearing universal wheel 5.
In a low radiation area, 2 transversely folded supporting legs 11 of the lower frame body are unfolded to 90 degrees, and a fixed knob is locked in a rotating mode; then, sequentially hanging lead shielding materials from the side edge of the hanging frame device, hanging one lead shielding material on each 3 fixed hooks 1, and overlapping the edges of two adjacent lead shielding materials to avoid gaps; after the lead shielding material is suspended, manually pushing the whole hanger device to a position to be shielded, unfolding the longitudinal folding supporting legs 10, and inserting the fixing bolts into corresponding hole positions for fixing; then the bottom universal wheel 5 is locked; if the side edge needs to extend the shielding range, the telescopic cross beam can be pulled out and fixed, and then the lead shielding material is hung. When the hanger is detached, the 2 longitudinal folding supporting legs 10 are retracted, the bottom universal wheels 5 are unlocked, and then the whole hanger device is pushed to a low-radiation area to be detached or temporarily stored.
As shown in fig. 4 and 5, the telescopic cross beam 4 is a hollow cylindrical structure with hollow front and back surfaces, the telescopic section is inserted into the telescopic cross beam 4, and the fixed hook 1 is fixedly connected to the upper surface of the telescopic cross beam 4. The rotating hook 2 is of a Y-shaped structure, and the bottom end of the rotating hook is provided with a fixing nut. The one end of flexible crossbeam 4 is opened there is the through-hole, and rotatory couple 2 passes the through-hole, fixes on flexible crossbeam 4, and the upper surface of flexible section is opened flutedly, and one end is opened has the through-hole, and rotatory couple 2 passes the through-hole, fixes on flexible section one end.
If the hot spot influence range is wide, a plurality of shielding hanger devices are required to be linked and combined for application. Firstly, selecting the size of the hanging rack device according to the height of a hot spot to be shielded, and determining the number of the hanging rack devices according to the shielding range; secondly, completing lead shielding material installation of a single hanger device in a low-radiation area (the installation operation mode is the same as the above), pushing each hanger device to a designated position, inserting upper, middle and lower pins on the side edges of two adjacent hanger devices into slots for locking, and realizing matching and linking at any angle according to the space position, wherein the common link angle is 180 degrees and 90 degrees; and finally, hanging lead shielding materials at the boundary position and locking the bottom supporting leg.
When the hanger device is detached, if only a single hanger device needs to be detached, the lead shielding material at the junction of the left side and the right side of the hanger device can be detached firstly, then the locking of the linking devices at the left side and the right side of the hanger device and the locking of the bottom supporting legs are released, and finally the hanger device is pushed to a low-radiation area to be detached or temporarily stored. The method is similar when the whole body is disassembled.
The main functions of the invention are four aspects: firstly, the requirements of different shielding performances are met, and different shielding performance requirements can be met by hanging lead shielding materials with different thicknesses according to the dose rate level of a radiation source; secondly, the device has stronger stability and firm stability under the condition of rated load; thirdly, the requirement of convenience of quick installation and removal is met, and the main body part is installed in a low-radiation area so as to reduce the workload near the radioactive hot spot and reduce the radiation dose of operators; fourthly, the shielding material commonly used in the nuclear power station can be matched, resources are saved, and meanwhile, the overall shielding requirements of different lengths, different heights and different angles can be met according to the characteristics of the hot spot area.
Claims (8)
1. A modular radiation shielding hanger apparatus comprising: fixed couple (1), rotatory couple (2), left connecting seat (3), telescopic crossbeam (4), right connecting seat (6), upper and lower support body connecting seat (7), support body welding floor (9), vertical folding landing leg (10), horizontal folding landing leg (11), vertical pillar (12), its characterized in that: the whole trapezium structure that is of combination formula radiation shield stores pylon device, divide into support body and lower carriage, upper and lower support body is through support body connecting seat (7) fixed connection from top to bottom, the lower carriage is including fixed couple (1), rotatory couple (2), telescopic cross beam (4) and longitudinal support (12) right angle fixed connection, support body welding floor (9) are fan-shaped, fixed connection is on longitudinal support (12) and telescopic cross beam (4), hinged joint is passed through to longitudinal folding landing leg (10) and longitudinal support (12) bottom, horizontal folding landing leg (11) and longitudinal support (12) bottom fixed connection, left side connecting seat (3) and longitudinal support (12) left side fixed connection, right side connecting seat (6) and longitudinal support (12) right side fixed connection.
2. The modular radiation shielding hanger apparatus of claim 1 further comprising: the telescopic cross beam (4) is a hollow cylindrical structure with hollow front and back surfaces, the telescopic section is inserted into the telescopic cross beam (4), and the fixed hook (1) is fixedly connected to the upper surface of the telescopic cross beam (4).
3. The modular radiation shielding hanger apparatus of claim 1 further comprising: the rotating hook (2) is of a Y-shaped structure, and the bottom end of the rotating hook is provided with a fixing nut.
4. A modular radiation shielding hanger assembly according to claim 3 wherein: one end of the telescopic cross beam (4) is provided with a through hole, the rotary hook (2) penetrates through the through hole and is fixed on the telescopic cross beam (4), the upper surface of the telescopic section is provided with a groove, one end of the telescopic section is provided with a through hole, and the rotary hook (2) penetrates through the through hole and is fixed at one end of the telescopic section.
5. The modular radiation shielding hanger apparatus of claim 1 further comprising: the vertical folding landing leg (10) comprise a cross rod and an inclined rod, the bottom ends of the cross rod and the vertical strut are connected through a hinge, the middle part of the inclined rod is connected with the cross rod through a hinge, the inclined rod is divided into an inner loop bar and an outer loop bar, the inner loop bar is movably connected with the vertical strut through a pin shaft, and the bottom of the outer loop bar is fixedly connected with a rubber pad foot.
6. The modular radiation shielding hanger apparatus of claim 1 further comprising: the transverse folding supporting legs (11) are fixedly connected to the bottom ends of the longitudinal pillars through hinges.
7. The modular radiation shielding hanger apparatus of claim 1 further comprising: the upper frame body comprises a telescopic crossbeam (4) and a longitudinal strut (12), and the handle (8) is fixedly connected to the longitudinal strut (12).
8. The modular radiation shielding hanger apparatus of claim 1 further comprising: the bottoms of the transverse folding supporting legs (11) and the longitudinal folding supporting legs (10) are fixedly connected with a pressure-bearing universal wheel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821153537.1U CN209822293U (en) | 2018-07-20 | 2018-07-20 | Combined radiation shielding hanging rack device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821153537.1U CN209822293U (en) | 2018-07-20 | 2018-07-20 | Combined radiation shielding hanging rack device |
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| CN209822293U true CN209822293U (en) | 2019-12-20 |
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| CN201821153537.1U Active CN209822293U (en) | 2018-07-20 | 2018-07-20 | Combined radiation shielding hanging rack device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173152A (en) * | 2019-05-15 | 2019-08-27 | 中国辐射防护研究院 | A kind of modularization movable type combination shielding lead blanket hanging frame device |
| CN112201380A (en) * | 2020-09-29 | 2021-01-08 | 中核核电运行管理有限公司 | Foldable radiation shielding device |
| CN112768103A (en) * | 2020-12-28 | 2021-05-07 | 中广核研究院有限公司 | Movable shielding device |
| CN115223740A (en) * | 2022-06-02 | 2022-10-21 | 中国辐射防护研究院 | Portable shielding hanger |
-
2018
- 2018-07-20 CN CN201821153537.1U patent/CN209822293U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173152A (en) * | 2019-05-15 | 2019-08-27 | 中国辐射防护研究院 | A kind of modularization movable type combination shielding lead blanket hanging frame device |
| CN112201380A (en) * | 2020-09-29 | 2021-01-08 | 中核核电运行管理有限公司 | Foldable radiation shielding device |
| CN112768103A (en) * | 2020-12-28 | 2021-05-07 | 中广核研究院有限公司 | Movable shielding device |
| CN112768103B (en) * | 2020-12-28 | 2024-05-10 | 中广核研究院有限公司 | Mobile shielding device |
| CN115223740A (en) * | 2022-06-02 | 2022-10-21 | 中国辐射防护研究院 | Portable shielding hanger |
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