CN113012839A - Slide rail type screen shielding device - Google Patents

Abstract

The invention particularly relates to a slide rail type screen shielding device which comprises a movable support and a plurality of screen shielding modules, wherein the screen shielding modules are hung on the movable support in a sliding mode. The slide rail type screen shielding device provided by the invention can meet the comprehensive requirements of shielding property, safety, stability, convenience and avoidance of repeated disassembly and assembly, reduces the exposure dose of workers and realizes optimal management of radiation protection of a power station.

Description

Slide rail type screen shielding device

Technical Field

The invention belongs to the technical field of radiation protection of nuclear facilities, and particularly relates to a slide rail type screen shielding device.

Background

Almost all the radioactivity of the pressurized water reactor nuclear power plant comes from an active area of a reactor loaded with fuel assemblies, and along with the operation of the nuclear power plant, corrosion activation products are continuously deposited on the inner walls of equipment, valves and pipelines of a main system and auxiliary systems thereof to form points or local positions with strong radioactivity, which are often called as radioactive hot spots. The radiation level of the radioactive hot spot is high and is not easy to eliminate, and the formed strong penetrating radiation is a main reason of the increase of the radiation level of partial buildings or areas of the nuclear power plant, can cause high radiation dose to maintenance personnel near the radioactive hot spot, and can cause small dose accumulation to other workers near the radioactive hot spot, so that the overall 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, ensure the radiation safety of field workers and improve the radiation safety management level of a power plant, temporary shielding is a relatively common optimization measure in radiation protection management of a nuclear power plant. In practical application, the difficulty of effectively implementing temporary radiation shielding measures is high for large radioactive equipment or areas with concentrated radioactive hot spots, and the mode of building a shielding wall is generally adopted to realize integral shielding protection. The built shielding wall not only needs to realize good shielding performance, but also needs to comprehensively consider the requirements that shielding measures have enough self stability, the safety influence on system equipment is avoided, the building is simple and easy, the radiation dose of operators is reduced, and the like, and also needs to consider the convenience of the operation of the shielding measures during the operation or maintenance activities, so that the irradiated dose of the shielding device which is repeatedly disassembled and assembled is reduced as much as possible.

At present, no suitable temporary shielding device is available at home and abroad to meet the comprehensive requirements, and the existing shielding device has a plurality of limitations in application, which are mainly reflected as follows: the shielding mode of directly covering the radioactive hot spot by using the shielding material is adopted, the shielding material is generally heavier and is difficult to effectively fix, the damage of radioactive hot spot equipment can be caused, the safety of a nuclear power plant process system is influenced, meanwhile, the shielding performance and the shielding range are limited, and the shielding material is gradually replaced at present. The mode of erecting a scaffold as a support and then suspending a shielding material is adopted, so that the load influence on equipment can be avoided, but the workload of shielding operation is large, the operation time is long, and the radiation dose to operators is large; meanwhile, the shielding material which can be hung on the scaffold is limited, and the shielding performance is relatively limited; in addition, other departments need to build a scaffold in advance, the effectiveness is poor, and the scaffold is inconvenient to temporarily detach and reassemble if needed. Other shielding strutting arrangement hang shielding material's mode again, to the radioactive hot spot equipment that needs regularly carry out the operation to patrol and examine or maintain, overhaul the activity, it is also comparatively inconvenient to frequently dismouting shielding measure, also can increase operating personnel irradiated dose.

Disclosure of Invention

Based on this, to the problem that current shield assembly can not satisfy shielding property, security, stability, convenience and avoid the comprehensive demand of repeated dismouting, provide a slide rail formula screen shield assembly, this slide rail formula screen shield assembly can satisfy shielding property, security, stability, convenience and avoid the comprehensive demand of repeated dismouting, reduce the staff and receive the exposure dose, realize power station radiation protection optimal management.

In order to achieve the above purpose, the invention provides the following technical scheme:

a slide rail type screen shielding device comprises a movable support and a plurality of screen shielding modules, wherein the screen shielding modules are hung on the movable support in a sliding mode.

Further, the movable support comprises a frame, slide rails, slide blocks, hoisting upper parts, hoisting lower parts, wall leg parts, bottom leg parts and universal wheels, the frame 1 comprises a top cross beam, a bottom cross beam, a middle cross beam, a left vertical beam and a right vertical beam, the top cross beam, the left vertical beam, the bottom cross beam and the right vertical beam are sequentially connected end to form a rectangular frame, the middle cross beam is arranged in the middle of an inner cavity of the rectangular frame, two parallel slide rails are respectively installed on the bottom edges of the top cross beam and the middle cross beam, each slide rail is provided with a plurality of slide blocks, the bottom of each slide block is provided with one hoisting upper part, the bottom of each hoisting upper part is provided with one hoisting lower part, the bottoms of every two parallel hoisting lower parts are provided with 1 screen shielding module, the front upper parts of the left vertical beam and the right vertical beam are provided with 1 wall leg, the lower surfaces of two ends of the bottom cross beam are respectively provided with a universal wheel, and two sides of the bottom cross beam are respectively provided with 1 bottom supporting leg part.

Furthermore, two parallel slide rails are installed at the bottoms of the top cross beam and the middle cross beam through bolts and nuts, and a plurality of slide blocks are installed on each slide rail in an embedded mode.

Further, the hoisting upper part comprises a hoisting upper part bottom plate and a hoisting upper part side plate, the hoisting upper part bottom plate and the hoisting upper part side plate are integrally connected to form a T-shaped structure, and the hoisting upper part bottom plate is connected with a sliding block bolt and a sliding block nut; and the hoisting upper side plate is connected with the hoisting lower part through bolts and nuts.

Further, the wall surface leg part is connected with the frame through a rotating shaft and a shaft fixing plate.

Further, wall landing leg part includes long screw and the wall supporting legs who is connected with the long screw head, the left side is erected roof beam and the right side and is erected 1 rotation axis of the positive upper portion of roof beam all nested installation, wall supporting legs bolt nut installs on the rotation axis, the left side is erected roof beam and the right side and is erected 1 axle fixed plate of roof beam lateral surface upper portion all installed, the axle fixed plate is connected with frame bolt nut.

Further, the two bottom leg parts are respectively installed on two sides of the bottom cross beam through bolts and nuts.

Further, the bottom supporting leg component comprises a rotating base, an upper rotating support arm, a lower rotating support arm, a strong magnet, a long supporting leg, a short supporting leg and a supporting leg limiting part, wherein 1 rotating base is respectively installed on two sides of the bottom cross beam through bolts and nuts and is welded and fixed, 1 supporting leg limiting part is respectively installed on two sides of the bottom cross beam through bolts and nuts, the side surface of the rotating base is respectively rotatably connected with the upper rotating support arm and the lower rotating support arm, the strong magnet is installed on the side edge of the front end of the upper rotating support arm, and the rotating support arm is fixed through the supporting leg limiting part which; the front end of the upper rotating support arm is in bolted connection with 1 long support leg, and the front end of the lower rotating support arm is in bolted connection with 1 short support leg.

Furthermore, 2 screw holes for installing the plug-in hinge of bolts and nuts are reserved on the upper portion and the lower portion of the outer side wall of the vertical beam on the left side, and 2 screw holes for installing the plug-in hinge of bolts and nuts are reserved on the upper portion and the lower portion of the outer side wall of the vertical beam on the right side.

Furthermore, the screen shielding module is wrapped by stainless steel, and the inside of the screen shielding module contains lead.

Furthermore, 1 screen handle is installed on each bolt and nut on the left side and the right side of each screen shielding module on the non-vertical beam side of the frame cavity, and 1 screen handle is installed on each screen shielding module on the non-vertical beam side of the frame cavity through bolts and nuts.

The invention has the beneficial technical effects that:

the slide rail type screen shielding device provided by the invention can meet the comprehensive requirements of shielding property, safety, stability, convenience and avoidance of repeated disassembly and assembly, reduces the exposure dose of workers, realizes the optimal management of radiation protection of a power station, and is specifically represented as follows:

1. the slide rail type screen shielding device is not in direct contact with the radioactive hot spot equipment, so that the radioactive hot spot equipment is prevented from being damaged due to the weight of the shielding device, and meanwhile, the slide rail type screen shielding device has stronger stability in a rated load range.

2. The sliding rail type screen shielding device is provided with the slidable screen shielding module, and can realize the shielding performance which is 4 times or more than that of a single-layer soft lead screen commonly used in a power plant.

3. The slide rail type screen shielding device has strong convenience, meets the operation requirement of quick installation and removal, can open and close the window through the slide screen shielding module after being installed, meets the requirements of operation or maintenance related work, and reduces the repeated disassembly and assembly workload and the irradiated dose of the shielding device.

4. The slide rail type screen shielding device has certain universality, can select and install the screen shielding module according to the hot spot height, can expand the shielding coverage range through the combination of a plurality of devices, and is suitable for the integral shielding requirements of various positions and various types of hot spots.

Drawings

FIG. 1 is a front view of the slide screen shielding device of the present invention;

FIG. 2 is a left side view of the slide screen shielding device of the present invention;

FIG. 3 is a bottom view of the sliding screen shielding device of the present invention;

FIG. 4 is a schematic structural view of a shaft fixing plate;

FIG. 5 is a schematic view of the structure of the rotating shaft;

FIG. 6 is a schematic view of the structure of the wall support leg;

FIG. 7 is a front view of the wall support legs parallel to the vertical beams;

FIG. 8 is a front view of the wall support legs perpendicular to the vertical beams;

FIG. 9 is a right side view of the wall support legs taken perpendicular to the vertical beams;

FIG. 10 is a front view of the slider;

FIG. 11 is a right side view of the slider;

FIG. 12 is a top view of the slider;

FIG. 13 is a front view of the upper section being hoisted;

FIG. 14 is a top view of the upper section being hoisted;

FIG. 15 is a front view of the lower section being hoisted;

FIG. 16 is a top view of the hoisted lower part;

FIG. 17 is a schematic view of the installation of the slide rail, the slide block, the lower hoisting part and the upper hoisting part;

FIG. 18 is a front view of a screen shielding module;

FIG. 19 is a top view of a screen shielding module;

FIG. 20 is a schematic view of a mid-screen shielding module assembly;

FIG. 21 is a side screen shielding module assembly view;

FIG. 22 is a schematic view of a bottom leg member configuration;

FIG. 23 is a front view of a leg stop;

FIG. 24 is a right side view of a leg stop;

FIG. 25 is a schematic view of a frame upper mount screen shielding module;

FIG. 26 is a schematic view of a frame lower mount screen shielding module;

FIG. 27 is an expanded front view of two sets of bottom leg members;

FIG. 28 is a bottom expanded view of the two sets of bottom leg members;

FIG. 29 is an expanded front view of a wall leg member and a set of bottom leg members;

FIG. 30 is an expanded bottom view of the wall leg members and a set of bottom leg members;

FIG. 31 is a front view of the left hinge;

FIG. 32 is a top view of the left hinge;

FIG. 33 is a top view of the right hinge;

FIG. 34 is a top view of the right hinge;

FIG. 35 is a front view of a linear assembly of two sets of devices;

FIG. 36 is a top view of a straight L-shaped assembly of two sets of devices;

FIG. 37 is a top view of two sets of apparatus in an inclined L-shaped arrangement;

figure 38 is a top plan view of two sets of apparatus ii shaped combinations;

fig. 39 is a top view of a die assembly of two sets of devices.

In the figure, 1, frame; 2. a shaft fixing plate; 3. a rotating shaft; 4. a wall surface leg member; 5. a slide rail; 6, a sliding block; 7. hoisting the upper part; 8. hoisting the lower part; 9. a screen shielding module; 10. a screen handle; 11. a universal wheel; 12. a bottom leg member; 12-1, an upper rotary support arm; 12-2, a lower rotary support arm; 12-3, a strong magnet; 12-4, a leg limit; 12-5, long supporting feet; 12-6, short supporting feet; 12-7 parts of strong magnets 12-3 parts of long supporting legs 12-5 parts of short supporting legs 12-6 parts of long supporting legs; 12-7 and a rotary support arm.

Detailed Description

In the description of the present invention, it is to be understood that the terms "left end", "right end", "above", "below", "outside", "inside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention.

A slide rail type screen shielding device comprises a movable support and a plurality of screen shielding modules 9, wherein the screen shielding modules 9 are hung on the movable support in a sliding mode.

Further, the movable support comprises a frame 1, slide rails 5, slide blocks 6, a hoisting upper part 7, a hoisting lower part 8, wall leg parts 4, a bottom leg part 12 and universal wheels 11, wherein the frame 1 comprises a top cross beam, a bottom cross beam, a middle cross beam, a left vertical beam and a right vertical beam, the top cross beam, the left vertical beam, the bottom cross beam and the right vertical beam are sequentially connected end to form a rectangular frame, the middle cross beam is arranged in the middle of an inner cavity of the rectangular frame, the bottom edges of the top cross beam and the middle cross beam are respectively provided with two parallel slide rails 5, each slide rail 5 is provided with a plurality of slide blocks 6, the bottom of each slide block 6 is provided with one hoisting upper part 7, the bottom of each hoisting upper part 7 is provided with one hoisting lower part 8, the bottom edges of each two parallel hoisting lower parts 8 are provided with 1 screen shielding module, the front upper parts of the left vertical beam and the right vertical beam are respectively provided with, the lower surfaces of two ends of the bottom cross beam are respectively provided with a universal wheel 11, and two sides of the bottom cross beam are respectively provided with 1 bottom supporting leg part 12.

Furthermore, two parallel slide rails 5 are installed on the bottom edges of the top cross beam and the middle cross beam through bolts and nuts, and a plurality of slide blocks 6 are installed on each slide rail 5 in an embedded mode.

Further, the hoisting upper part 7 comprises a hoisting upper part bottom plate and a hoisting upper part side plate, the hoisting upper part bottom plate and the hoisting upper part side plate are integrally connected to form a T-shaped structure, and the hoisting upper part bottom plate is connected with the sliding block 6 through bolts and nuts; and the hoisting upper side plate is connected with the hoisting lower part 8 through bolts and nuts.

Further, the wall surface leg part 4 is connected to the frame 1 through the rotary shaft 3 and the shaft fixing plate 2.

Further, wall landing leg part 4 includes the long screw and the wall supporting legs who is connected with the long screw head, the left side is erected roof beam and right side and is erected 1 rotation axis 3 of the positive upper portion of roof beam all nested installation, wall supporting legs bolt and nut installs on rotation axis 3, the left side is erected roof beam and right side and is erected 1 axle fixed plate 2 of roof beam lateral surface upper portion all installed, axle fixed plate 2 is connected with 1 bolt and nut of frame.

Further, the two bottom leg parts 12 are respectively installed on both sides of the bottom beam by bolts and nuts.

Further, the bottom leg part 12 comprises a rotating base 12-1, an upper rotating arm 12-2, a lower rotating arm 12-7, a strong magnet 12-3, a long supporting foot 12-5, a short supporting foot 12-6 and a leg limiting part 12-4, two sides of the bottom beam are respectively and symmetrically provided with 1 rotating base 12-1 by bolts and nuts and are welded and fixed, leg limit parts 12-4 are arranged on two sides of the middle of the bottom beam, the side surface of the rotating base 12-1 is respectively and rotatably connected with an upper rotating arm 12-2 and a lower rotating arm 12-7, a strong magnet 12-3 is arranged at the side edge of the front end of the upper rotary support arm 12-2, when the upper rotary support arm 12-2 is retracted, the support leg limiting piece 12-4 is adsorbed by the powerful magnet 12-3 to be fixed; the front end of the upper rotary support arm 12-2 is connected with 1 long support leg 12-5 through a bolt, and the front end of the lower rotary support arm 12-7 is connected with 1 short support leg 12-6 through a bolt.

Furthermore, 2 screw holes for installing the plug-in hinge of bolts and nuts are reserved on the upper portion and the lower portion of the outer side wall of the vertical beam on the left side, and 2 screw holes for installing the plug-in hinge of bolts and nuts are reserved on the upper portion and the lower portion of the outer side wall of the vertical beam on the right side.

Further, the screen shielding module 9 is wrapped by stainless steel, and the inside of the screen shielding module contains lead.

Furthermore, 1 screen handle 10 is installed on each of the left and right sides of each screen shielding module 9 on the non-vertical beam side of the inner cavity of the frame 1 by a bolt and a nut, and 1 screen handle 10 is installed on each screen shielding module 9 on the non-vertical beam side of the inner cavity of the frame 1 by a bolt and a nut.

Further, 1 screen shielding module 9 is installed on the bottom bolt and nut of each two parallel hoisting lower parts 8.

The sliding rail type screen shielding device is provided with a slidable screen shielding module in the aspect of radiation shielding performance, the screen shielding module is made of lead materials and is wrapped by stainless steel, equivalent lead is 2cm, the shielding performance is about 3 times of the half-value layer thickness of Cs-137 gamma rays (0.662Mev), about 1.7 times of the half-value layer thickness of Co-60 gamma rays (1.25Mev) and about 4 times of a single-layer soft lead screen commonly used in a nuclear power plant.

The slide rail type screen shielding device adopts a frame type structure in the aspect of safety, so that the shielding device is prevented from being in direct contact with hot spot equipment, and load safety influence on system equipment is avoided. After the slide rail type screen shielding device is fully loaded, the requirement that the seismic fortification intensity of the Zhejiang sea salt area is not lower than 6 levels can be met through seismic stability analysis. The outer surface of the slide rail type screen shielding device is subjected to smoothing treatment, and all edges and corners are subjected to polishing and smoothing treatment, so that the use safety is ensured. The slide rail type screen shielding device is small in workload and short in operation time required by installation and removal, relevant inspection and maintenance work can be carried out without removal, and the irradiated dose of shielding operators can be remarkably reduced.

The sliding rail type screen shielding device is convenient, the slidable screen module is a standard product, can be freely matched, and is convenient for personnel to carry and operate due to the design of the stainless steel handle. The slide rail type screen shielding device can realize the inspection or maintenance work of hot spot equipment under the condition that the shielding device is not dismounted, and the window can be opened and closed by moving the screen module, so that the repeated dismounting workload of the shielding device is reduced, and the implementation of field work is facilitated. The slide rail type screen shielding device has low operation difficulty, and operators can master the use requirements after simple training. The sliding rail type screen shielding device does not need the cooperation of other specialties of a power plant, and the effectiveness of the radiation shielding work can be improved.

The slide rail type screen shielding device comprises an upper frame and a lower frame, and a slidable screen module can be installed in the upper frame and the lower frame according to the height position of a hot spot and the shielding range, so that the slide rail type screen shielding device has high flexibility. The slide rail type screen shielding device can meet the construction requirements of shielding walls in various areas and has better universality. When the hot spot range that needs the shielding is great, can adopt many sets of device combination to use the shielding assembly of the constitution multiple style, like linear type assembly, the L type assembly of multiple contained angle, II type assembly, mouth type assembly etc..

Example 1

Referring to fig. 1, a sliding rail type screen shielding device includes 1 movable bracket and 12 screen shielding modules 9.

The movable support comprises 1 frame 1, 4 sliding rails 5, 24 sliding blocks 6, 24 hoisting upper parts 7, 24 hoisting lower parts 8, 2 wall supporting leg parts 4, 2 bottom supporting leg parts 12 and 2 universal wheels 11.

Frame 1 is formed by a plurality of square pipe body spares, erects the roof beam and erects the roof beam on the right side including top crossbeam, bottom crossbeam, middle part crossbeam, left side, top crossbeam, left side are erected roof beam, bottom crossbeam and right side and are erected the roof beam and connect end to end in proper order and form rectangular frame, rectangular frame inner chamber middle part is equipped with the middle part crossbeam. Specifically, the wall thickness of the square tube is 3 mm; the length, width and height of the frame 1 are 1100mm multiplied by 70mm multiplied by 1500 mm; the height of the upper surface and the lower surface of the top cross beam and the bottom cross beam are both 40mm, the height of the upper surface and the lower surface of the middle cross beam is 80mm, and the distance between the horizontal center plane of the middle cross beam and the bottom surface of the bottom cross beam is 750 mm.

The bottom edges of the top beam and the middle beam are respectively provided with 40 double-row holes, the top beam and the middle beam are provided with two parallel slide rails 5 through double-row hole bolts and nuts, and each slide rail 5 is provided with 6 sliding blocks 6 in an embedded mode. Specifically, the distance between the double rows of holes is 50mm, and the aperture diameter is phi 3.5 mm; the sliding rail 5 and the sliding block 6 are made of 304 stainless steel; the length, width and height of the slide rail 5 are 1000mm multiplied by 12mm multiplied by 7.5 mm; the length, width and height of the slide block 6 are 47mm multiplied by 27mm multiplied by 11 mm.

The bottom bolt and nut of each sliding block 6 is provided with a hoisting upper part 7, the bolt and nut of each hoisting upper part 7 is provided with a hoisting lower part 8, and every two parallel hoisting lower parts 8 are provided with 1 screen shielding module 9.

Specifically, the hoisting upper part 7 is made of 45 steel and comprises a hoisting upper part bottom plate with the length, width and height of 47mm multiplied by 27mm multiplied by 5mm and a hoisting upper part side plate with the length, width and height of 47mm multiplied by 4mm multiplied by 40mm, and the hoisting upper part bottom plate and the hoisting upper part side plate are welded and connected to form a T-shaped structure; the hoisting lower part 8 is made of 45 steel and comprises a hoisting lower bottom plate with the length, width and height of 72mm multiplied by 23mm multiplied by 5mm and a hoisting lower side plate with the length, width and height of 32mm multiplied by 30mm multiplied by 5mm, and the hoisting lower bottom plate and the hoisting lower side plate are welded and connected to form a T-shaped structure; four through holes with the distance of 20mm and the aperture phi of 3.5 are arranged on the hoisting upper bottom plate, and the hoisting upper bottom plate is arranged at the bottom of the sliding block 6 through holes, bolts and nuts; a phi 7mm through hole is formed in the hoisting upper side plate, a phi 6mm through hole connected with the hoisting upper side plate is reserved in the middle of the hoisting lower side plate, and the hoisting lower side plate and the hoisting upper side plate are connected through the phi 7mm through hole and the phi 6mm through hole through bolts and nuts; the hoisting lower bottom plate is provided with two phi 6mm threaded holes, 4M 4 threaded holes are pre-embedded in the upper part of each screen shielding module 9, and two hoisting lower bottom plates are installed on the upper part of each screen shielding module 9 in a threaded manner.

The wall surface supporting leg part 4 comprises a long screw and a wall surface supporting leg connected with the head of the long screw; the long screw rod is an M10 threaded rod with the length of 190mm, the outer diameter phi of the wall supporting leg is 32mm, the long screw rod is welded on the long threaded rod, and the long screw rod and the wall supporting leg are both made of SUS304 stainless steel.

The wall surface leg part 4 is connected with the frame 1 through the rotating shaft 3 and the shaft fixing plate 2.

Specifically, the rotating shaft 3 is made of 45 steel, the total length is 63mm, the outer diameter phi is 30mm, and phi 16mm multiplied by 6mm circumferential shoulders are arranged on two axial sides; the shaft fixing plate 2 is made of SUS304 stainless steel, the length, the width and the height of the SUS304 stainless steel are 100mm multiplied by 70mm multiplied by 5mm, the center of the shaft fixing plate is a phi 16mm through hole, and two sides of the shaft fixing plate are respectively provided with a phi 6mm through hole.

The upper parts of the front surfaces of the left vertical beam and the right vertical beam are square through holes of 44mm multiplied by 300mm, the circumference shoulder at one end of the rotating shaft 3 penetrates through the through holes reserved at the edge of the frame 1 at the square through hole for fixing, the circumference shoulder at the other end penetrates through the phi 16mm through hole of the shaft fixing plate 2, and the two phi 6mm through holes of the shaft fixing plate 2 are connected with the vertical beams by bolts and nuts. The middle part of the rotating shaft 3 is provided with an M10 threaded hole, and the wall surface supporting leg screw rod is arranged on the rotating shaft 3 through an M10 threaded hole; the shaft fixing plates 2 are mounted on the upper portions of the outer side surfaces of the left vertical beam and the right vertical beam, the middle portions of the shaft fixing plates 2 are phi 16mm through holes, and the shaft fixing plates 2 are connected with one end of the rotating shaft 3 through the phi 16mm through holes in a surrounding mode. Function of the wall surface leg member 4: when the device sets up and leans on the wall nearer, the bottom landing leg can only be opened to the outside, leans on one side of the wall bottom landing leg can't be opened, can open at this moment the wall landing leg and support the wall, just with the bottom landing leg combined action of opening outwards, stabilize the support body. The unfolded mode is shown in fig. 29, 30.

And two ends of the bottom cross beam are respectively provided with a 4-inch heavy universal wheel 11. The universal wheel 11 is made of 304 stainless steel. The heavy universal wheel 11 can be braked and locked, and a single heavy universal wheel 11 can bear 500kg of load.

The left side and the right side of the lower surface of the bottom cross beam are respectively provided with 4M 6 threaded holes, and the two bottom leg parts 12 are installed on the bottom cross beam through bolts and are welded and fixed.

Referring to fig. 22, the bottom leg part 12 includes a rotary base 12-1, an upper rotary arm 12-2, a lower rotary arm 12-7, a strong magnet 12-3, a long support foot 12-5, a short support foot 12-6, and a leg stopper 12-4.

The rotary base 12-1 is installed on the lower surface of the bottom cross beam through bolts and nuts and is welded and fixed, and the upper rotary support arm 12-2 and the lower rotary support arm 12-7 are fixedly connected with an M16mm threaded hole of the rotary base 12-1 through bolts; the upper rotary arm 12-2 and the lower rotary arm 12-7 can rotate freely within the range of 90 degrees. The leg limiting piece 12-4 is provided with two phi 6mm through holes and is arranged on two threaded holes of the bottom cross beam through bolts; a strong magnet 12-3 is arranged at the side edge of the front end of the upper rotary support arm 12-2, and an adsorption support leg limiting part 12-4 is fixed when the upper rotary support arm 12-2 is retracted; the bolt of the long supporting foot 12-5 is fixedly connected with the threaded hole at the front end of the upper rotating arm 12-2, the bolt M12 of the long supporting foot 12-5 has a total length of 115mm, and the outer diameter phi 60 of the floor mat, the bolt of the short supporting foot 12-6 is fixedly connected with the threaded hole at the front end of the lower rotating arm 12-7, the bolt M12 of the short supporting foot 12-6 has a total length of 115mm, and the outer diameter phi 60 of the floor mat.

The length, width and height of the upper rotary support arm 12-2 are 410mm multiplied by 40mm multiplied by 20 mm; the length, width and height of the lower rotary support arm 12-7 are 360mm multiplied by 40mm multiplied by 20 mm; the long supporting legs 12-5 and the short supporting legs 12-6 are both made of 304 stainless steel; the upper rotating arm 12-2 and the lower rotating arm 12-7 are both made of 45 steel.

The bottom leg part 12 can be unfolded 90 degrees towards the left side and the right side respectively to form 180-degree symmetrical arrangement so as to stabilize the frame body, and the long supporting feet 12-5 and the short supporting feet 12-6 can be adjusted according to the ground leveling condition. The deployment mode is shown in fig. 27, 28.

The upper portion and the lower part of the outer side wall of the vertical beam on the left side are respectively reserved with 2M 10 threaded holes for installing the plug-in hinge, and the upper portion and the lower portion of the outer side wall of the vertical beam on the right side are respectively reserved with 2M 10 threaded holes for installing the plug-in hinge. When a plurality of devices are combined and applied, a plug-in hinge can be installed, each device is provided with 4 hinges, 2 lower hinges are installed on the left vertical beam, 2 upper hinges are installed on the right vertical beam, and the hinges are purchased and fixed by bolts and nuts.

The frame 1 can be stored and used as a whole after being assembled, and the total size of the single-set shielding device is 1100mm multiplied by 70mm multiplied by 1660 mm.

The length, width and height of the screen shielding module 9 are 180mm multiplied by 23mm multiplied by 650mm, the outer surface of the screen shielding module 9 adopts a 304 stainless steel outer package with the thickness of 1.5mm, and the thickness of the lead in the screen shielding module is 20 mm.

The left side bolt and the right side bolt of each screen shielding module on the non-vertical beam side of the inner cavity of the frame 1 are respectively provided with 1 screen handle 10, and the screen handles 10 can be used for carrying and opening and closing the screen shielding modules. And 1 screen handle 10 is arranged on each screen shielding module at the side of the vertical beam in the inner cavity of the frame 1 by bolts and nuts at the side of the non-vertical beam, so that the interference between the screen handles 10 and the vertical beams is avoided. The screen handle 10 may be used to carry and open and close the screen module.

The installation of the slide rail type screen shielding device comprises the following steps:

(1) shielding device frame mounting

Step 1: the wall surface leg member 4 is mounted on the upper portion of the frame 1 via the rotary shaft 3 and the shaft fixing plate 2.

Step 2: the top cross beam and the middle cross beam are both provided with two parallel slide rails 5 through bolts and nuts, each slide rail 5 is provided with 6 slide blocks 6 in an embedded mode, and the bottom of each slide block 6 is provided with a hoisting upper portion 7 through bolts and nuts.

And step 3: a4-inch heavy universal wheel 11 is installed at each bolt and nut at two ends of the bottom cross beam, and 1 bottom supporting leg limiting part 12 is installed at the left side and the right side of the lower surface of the bottom cross beam respectively through the bolt and nuts.

And 4, step 4: the step 1 to the step 3 are installed to form a shielding device frame which is integrally stored and used without being dismantled.

And 5: when a plurality of sets of devices are needed to be combined and applied, the pluggable hinge can be installed at M10 threaded holes reserved at the upper part and the lower part of the outer side wall of the vertical beam of the frame 1 through bolts and nuts, and the pluggable hinge can not be installed when a single set is used.

(2) Screen shielding module 9 installation

Step 1: and 1 screen shielding module 9 is arranged at the bottom edge of each two parallel hoisting lower parts 8.

Step 2: and (5) repeating the step (1) to finish the installation of all the hoisting lower parts 8 and the screen shielding modules 9.

And step 3: the screen handle 10 is installed, the left side and the right side of the middle screen shielding module 9 are respectively provided with a handle, and the side screen shielding module 9 is only provided with a handle.

The screen shielding module 9 is stored and used as a whole after being installed without being dismantled.

The sliding rail type screen shielding device is used

(1) Radiation shielding scheme determination

The range of the shielding measures and the number of the required radiation shielding devices and shielding modules are determined according to the spatial position and the influence area of the radioactive hot spot.

(2) Shielding device using method

1) The use method of the single set of device comprises the following steps: the slide rail type screen shielding device can realize various using modes according to the site hot spot position, and the specific method is roughly similar to that of the following steps: firstly, vertically opening 4 bottom leg parts 12 and locking universal wheels 11 in a low radiation area of a hot spot edge, and adjusting long supporting feet 12-5 and short supporting feet 12-6 to ensure that the frame 1 is kept vertical to the ground.

Installing screen shielding modules 9, installing 1 screen shielding module 9 on the bottom side of every two parallel hoisting lower parts 8 by bolts and nuts, and selecting a plurality of mounting modes of the screen shielding modules 9 according to different heights of hot spots:

when the height of the hot spot position from the ground is between 900mm and 1600mm, the screen shielding module 9 can be arranged on the upper part of the frame 1; when the height of the hot spot position from the ground is between 100mm and 800mm, the screen shielding module 9 can be arranged at the lower part of the frame 1; when the hot spot positions are distributed at multiple points in the range of 100mm to 1600mm from the ground height, the screen shielding modules 9 can be completely installed at the upper and lower portions of the frame 1.

Many people hold up steady movable support, suitably reduce the landing leg supporting legs, loosen universal wheel 11, with slide rail formula screen shield assembly whole removal to waiting to shield the position, lock the universal wheel 11 again, adopt different landing leg fixed methods to different positions: when the device is used in an open area, the device can be vertically opened through two sides of the 4 bottom leg parts 12, and the device is adjusted to be fixed at a proper height; when the wall support leg component is used near the wall, the wall support leg component 4 and the other 2 bottom support leg components 12 are combined to realize fixation.

2) The using process adjusting method comprises the following steps: after the sliding rail type screen shielding device is arranged, for general inspection, operation and simple maintenance, the screen shielding module 9 can be directly moved to open the window for operation, a whole set of shielding device does not need to be dismantled, and the screen shielding module 9 can be moved to recover after the completion, so that the operation is very convenient and fast. For large-scale maintenance, the shielding device needs to be moved away, the shielding device can be integrally moved to a non-working position by referring to the upper section, and the shielding device can be restored by integrally moving to a shielding position after the maintenance is finished.

3) The combined use method of a plurality of devices comprises the following steps: when the shielding range is wide or special shielding requirements exist, a plurality of sets of devices can be combined for use, the using method of each set of devices is the same as that of the device, hinges need to be installed on two sides of the shielding devices in advance during combined use, the two sets of devices are fixed through bolts and nuts when being moved to adjacent positions, and the bolts and nuts of the hinges need to be unfastened first when being disassembled.

Several types of common combinations are used as follows: in a linear mode, the extension shielding range of the device can be increased according to the hot spot area; the angle type can be used and can be assembled into a plurality of modes such as a vertical L type, an oblique angle L type and the like; the shielding house can be used in a closed mode, can be matched with walls to form the shielding house, and can also be directly used.

The slide rail type screen shielding device can realize related inspection and maintenance operations under the condition of not dismounting the device, and avoids increasing the irradiated dose of operators due to frequently dismounting the shielding device; when the slide rail type screen shielding device is erected and dismantled, compared with a shielding erecting mode that a scaffold is adopted as a support on the same scale, the workload and the operation time are both greatly reduced, and the irradiated dose of shielding erecting personnel can be reduced; the shielding thickness of the slide rail type screen shielding device described in the invention is about equal to the thickness of a soft lead screen commonly used in 4 power plants, the slide rail type screen shielding device is easy to install, does not deform, is good in operation convenience and strong in stability, and effectively improves the shielding performance; the slide rail type screen shielding device described in the invention can be used singly or in combination, so that the integral shielding requirements of various hot spot areas are met, and the system function is not influenced.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A slide rail type screen shielding device is characterized by comprising a movable support and a plurality of screen shielding modules (9), wherein the screen shielding modules (9) are hung on the movable support in a sliding mode.

2. The slide rail type screen shielding device according to claim 1, wherein the movable support comprises a frame (1), slide rails (5), sliders (6), a hoisting upper portion (7), a hoisting lower portion (8), a wall leg member (4), a bottom leg member (12) and universal wheels (11), the frame (1) comprises a top cross beam, a bottom cross beam, a middle cross beam, a left vertical beam and a right vertical beam, the top cross beam, the left vertical beam, the bottom cross beam and the right vertical beam are sequentially connected end to form a rectangular frame, the middle cross beam is arranged in the middle of an inner cavity of the rectangular frame, two parallel slide rails (5) are respectively arranged on the bottom edges of the top cross beam and the middle cross beam, a plurality of sliders (6) are respectively arranged on each slide rail (5), one hoisting upper portion (7) is arranged at the bottom of each slider (6), one hoisting lower portion (8) is arranged at the bottom of each hoisting upper portion (7), the bottom of every two parallel hoist and mount lower part (8) installs 1 screen shielding module (9), 1 wall landing leg part (4) is all installed on the positive upper portion of left side vertical beam and right side vertical beam, universal wheel (11) are respectively installed to bottom crossbeam both ends lower surface, 1 bottom landing leg part (12) are respectively installed to bottom crossbeam bottom both sides.

3. The screen shielding device of claim 2, wherein the top and middle beams are each mounted with two parallel sliding rails (5) by bolts and nuts, and each sliding rail (5) is mounted with a plurality of sliding blocks (6) in a nesting way.

4. The slide rail type screen shielding device according to claim 2, wherein the hoisting upper part (7) comprises a hoisting upper part bottom plate and a hoisting upper part side plate, the hoisting upper part bottom plate and the hoisting upper part side plate are integrally connected to form a T-shaped structure, and the hoisting upper part bottom plate is connected with the sliding block (6) through bolts and nuts; and the hoisting upper side plate is connected with the hoisting lower part (8) through bolts and nuts.

5. A screen-shielding device according to claim 2, characterised in that the wall-leg part (4) is connected to the frame (1) via a rotary shaft (3) and a shaft-fixing plate (2).

6. The sliding screen shielding device according to claim 5, wherein the wall leg part (4) comprises a long screw and a wall supporting leg connected with the head of the long screw, the upper parts of the front surfaces of the left vertical beam and the right vertical beam are respectively provided with 1 rotating shaft (3) in a nested manner, the bolt and nut of the wall supporting leg are arranged on the rotating shafts (3), the upper parts of the outer side surfaces of the left vertical beam and the right vertical beam are respectively provided with 1 shaft fixing plate (2), and the shaft fixing plates (2) are connected with the bolt and nut of the frame (1).

7. The sliding screen shielding device according to claim 1, wherein the bottom leg member (12) comprises a rotary base (12-1), an upper rotary arm (12-2), a lower rotary arm (12-7), a strong magnet (12-3), a long support leg (12-5), a short support leg (12-6) and a leg limiting member (12-4), wherein two sides of the bottom beam are respectively provided with 1 rotary base (12-1) via bolts and nuts and are welded and fixed, two sides of the bottom beam are respectively provided with 1 leg limiting member (12-4) via bolts and nuts, the side of the rotary base (12-1) is respectively rotatably connected with the upper rotary arm (12-2) and the lower rotary arm (12-7), the front side of the upper rotary arm (12-2) is provided with the strong magnet (12-3), when the rotary support arm is retracted, the rotary support arm is fixed by adsorbing a support leg limiting piece (12-4) through a strong magnet (12-3); the front end of the upper rotating support arm (12-2) is in bolted connection with 1 long support leg (12-5), and the front end of the lower rotating support arm (12-7) is in bolted connection with 1 short support leg (12-6).

8. The sliding screen shielding device according to claim 1, wherein 2 screw holes for bolt and nut mounting of the plug-in hinge are reserved in the upper and lower portions of the outer side wall of the left vertical beam, and 2 screw holes for bolt and nut mounting of the plug-in hinge are reserved in the upper and lower portions of the outer side wall of the right vertical beam.

9. A sliding-rail screen shielding device according to any one of claims 1 to 8, characterized in that the screen shielding module (9) is encased in stainless steel and contains lead inside.

10. The sliding-rail screen shielding device according to any one of claims 1 to 8, wherein each screen shielding module (9) on the non-vertical beam side of the inner cavity of the frame (1) is provided with 1 screen handle (10) by bolt and nut, and each screen shielding module (9) on the non-vertical beam side of the inner cavity of the frame (1) is provided with 1 screen handle (10) by bolt and nut.

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