CN212516594U - Tunnel type abnormal shape radiation shield assembly - Google Patents
Tunnel type abnormal shape radiation shield assembly Download PDFInfo
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- CN212516594U CN212516594U CN202021471818.9U CN202021471818U CN212516594U CN 212516594 U CN212516594 U CN 212516594U CN 202021471818 U CN202021471818 U CN 202021471818U CN 212516594 U CN212516594 U CN 212516594U
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Abstract
The utility model discloses a tunnel type abnormal shape radiation shielding device, including hollow cylinder module, first tunnel supports shielding module, and the second tunnel supports shielding module, tunnel shielding module, first turning shielding module, second turning shielding module, folding handle and connection hasp, shielding module pass through the fixed formation an organic whole of hasp. The beneficial effects are that: the tunnel type abnormal radiation shielding device has stronger stability and safety, and avoids the safety influence on the compression of hot spot pipelines; the utility model discloses the tunnel type abnormal shape radiation shield device of well description is when setting up and demolising, and work load and operating time are compared in the equal decline of other shielding methods by a wide margin, and operating personnel illuminated dosage also is showing and is reducing.
Description
Technical Field
The utility model belongs to the technical field of nuclear facilities radiation protection, concretely relates to tunnel type abnormal shape radiation shield assembly, it can regard as the abnormal shape radiation shield assembly of the strong radioactivity hot pipeline of multiple structure of nuclear power plant to use.
Background
The temporary radiation shielding is a radiation protection management and control measure commonly used by a nuclear power plant and is used for protecting radioactive hotspots which are difficult to eliminate, high in dose rate and large in influence on the radiation dose of personnel, so that the dose rate level of a workplace is reduced, and the radiation safety level of the power plant is improved.
In practical application, it is found that radiation shielding is difficult to effectively implement for radioactive hot spot pipelines of a strong radiation field, particularly for some hot spots with poor positions and limited space, for example, a hot spot of an RCP215VP balance pipeline of a nuclear island factory of four M310 units in a second, qin factory is located below a main pipeline of a reactor coolant system to a residual system, the contact dose rate reaches a hundred mSv/h level, so that the dose rate of surrounding places is remarkably increased, the overhaul working dose in the area near the hot spot pipeline contributes to the dose of the whole overhaul collective, and the main difficulties in implementing radiation shielding are as follows:
the dosage rate of the hot spot pipeline is high, the shielding performance of a single shielding material (soft lead screen) commonly used in a power plant is limited, the quantity of the shielding materials required for achieving the expected effect is large, the carrying and the installation of the shielding materials are difficult, the shielding disassembly and assembly operations are inconvenient, and the collective dosage cost is high.
The hot spot pipeline contains standpipe, violently manages and return bend isotructure, and hot spot position space is narrow and small, adopts the direct mode of covering of shielding material to effectively implement the parcel, and the shielding material that needs is in large quantity, weight is big, not only has the problem that shielding material is difficult to fix, still can cause the hot spot pipeline pressure-bearing, has the potential safety hazard.
Due to the influence of hot spot pipeline structure and space, the common support shielding mode is difficult to be effectively applied (such as hanging a soft lead screen by a scaffold); secondly, the shielding construction occupies a large space, and influences the implementation of nearby maintenance work and the passage of other workers; in addition, the working time of the shield building is long, and the exposure dose of operators is high.
For the radioactive hot spot pipeline with the strong radiation field, no suitable temporary shielding device exists at home and abroad currently, and an effective shielding and protecting means is also lacked in a nuclear power plant, so that certain radiation safety hidden danger exists on the site, and therefore, the existing shielding mode needs to be improved urgently.
In order to effectively solve the shielding and protection problems of radioactive hot spot pipelines in nuclear power plants, and better apply a radiation shielding technology, a set of radiation shielding device which meets the radiation protection requirement on shielding performance, has stronger safety and operation convenience and can obviously reduce the exposure dose of workers is necessary to be designed and manufactured from the requirement of optimal management of radiation protection of a power station.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tunnel type abnormal shape radiation shield assembly, it can solve the shielding protection difficult problem of the radioactive heat spot pipeline of nuclear power plant's strong radiation field, has better security performance, stability ability, convenience performance and reduction staff illuminated dose simultaneously.
The technical scheme of the utility model as follows: the utility model provides a tunnel type abnormal shape radiation shield assembly, includes hollow cylinder module, and first tunnel supports shielding module, and the second tunnel supports shielding module, tunnel shielding module, first turning shielding module, second turning shielding module, folding handle and connection hasp, shielding module pass through the hasp fixed formation an organic whole.
Interconnect between a plurality of tunnel shielding module, the one end and the tunnel of the structure that a plurality of tunnel shielding module are constituteed support shielding module to be connected, and tunnel support shielding module upper portion is connected with hollow cylinder module, and the other end of the structure that a plurality of tunnel shielding module are constituteed is connected with corner shielding module, and corner shielding module still is connected with the structure that a plurality of tunnel shielding module are constituteed.
The corner shielding module comprises a first corner shielding module and a second corner shielding module, the first corner shielding module and the second corner shielding module are connected through a connecting lock catch, and folding handles are respectively installed on the first corner shielding module and the second corner shielding module.
The tunnel support shielding module comprises a first tunnel support shielding module and a second tunnel support shielding module which are connected with each other, and a hole is formed in the middle of the joint of the second tunnel support shielding module and the first tunnel support shielding module.
And lead shielding layers are cast inside the hollow cylindrical module, the tunnel supporting shielding module, the tunnel shielding module and the corner shielding module.
The tunnel shielding module is locked by buckles and buckles arranged on the side edges, buckles are arranged in the middle of the two side edges of the tail groove, and buckles are arranged in the middle of the two side edges of the head convex groove.
The hollow cylinder module comprises two hollow semicylinders with symmetrical structures.
The hollow cylinder joint part is of a step-shaped structure, and a hasp and a buckle head are respectively arranged on the side walls of two sides of the joint part and used for radially fixing the module.
The hollow cylinder module comprises a base hollow cylinder module and a middle hollow cylinder module.
The upper part of the base hollow cylindrical module is of a convex groove structure, and the lower part of the base hollow cylindrical module is a plane.
The upper part of the middle hollow cylindrical module is of a convex groove structure, and the lower part of the middle hollow cylindrical module is of a groove structure.
The middle hollow cylindrical module is fixedly arranged above the base hollow cylindrical module through the connection of the concave-convex grooves, and ray leakage in the using process can be avoided.
The corner shielding module comprises a first corner shielding module and a second corner shielding module, and the first corner shielding module and the second corner shielding module are triangular shielding modules.
A platform is installed on the side edge of a convex groove in the top of the first tunnel supporting and shielding module, and a half hollow cylinder is installed in the center of the side edge of the convex groove of the platform.
And a platform is arranged on the side edge of the groove at the top of the second tunnel supporting shielding module, and a half hollow cylinder is arranged at the center of the side edge of the platform groove.
The beneficial effects of the utility model reside in that: the tunnel type abnormal radiation shielding device has stronger stability and safety, and avoids the safety influence on the compression of hot spot pipelines; when the tunnel type special-shaped radiation shielding device described in the utility model is erected and dismantled, the workload and the operation time are greatly reduced compared with other shielding modes, and the irradiated dose of the operator is also obviously reduced; the tunnel type abnormal radiation shielding device described in the utility model also takes into account various requirements such as convenience of transportation, convenience of disassembly and assembly, stability and the like on the basis of focusing on shielding performance design, takes into account the protection of material gaps, and has stronger shielding performance and convenience of operation; the tunnel type abnormal radiation shielding device described in the utility model has the advantages of comprehensive protection range, less occupied space, beautiful structure and less influence on other work around the hot spot after being assembled; the utility model discloses the shield body that tunnel type abnormal shape radiation shield assembly described can make up into multiple structure realizes the shielding protection requirement of multiple use, and does not influence the system function.
Drawings
Fig. 1 is a top view of a tunnel-type abnormal-shape radiation shielding device provided by the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a front view of a tunnel shielding module;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a top view of FIG. 4;
FIG. 7 is a front view of a tunnel support shielding module;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a left side view of FIG. 7;
FIG. 10 is a front view of a base hollow cylinder module;
FIG. 11 is a sectional view taken along line A-A of FIG. 10;
FIG. 12 is a left side view of FIG. 10;
FIG. 13 is a combination view of a tunnel support shielding module and a hollow cylindrical module;
FIG. 14 is a combination view of a base hollow cylindrical module and a middle hollow cylindrical module;
FIG. 15 is an assembled view of the horizontal linear shield assembly;
FIG. 16 is an assembly view of a horizontal elbow shield assembly;
FIG. 17 is an assembled view of the vertical L-shaped assembly;
FIG. 18 is an assembled view of the vertical T-shaped assembly;
fig. 19 is an assembly view of the vertical type ii assembly.
In the figure, 1 hollow cylinder module, 2 first tunnel supporting shielding module, 3 second tunnel supporting shielding module, 4 tunnel shielding module, 5 first corner shielding module, 6 second corner shielding module, 7 folding handle, 8 connecting lock catch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a tunnel type abnormal shape radiation shield assembly, its main function has following four aspects: the shielding device has strong shielding performance, can effectively and integrally shield the radioactive hot spot pipeline of a strong radiation field, and simultaneously avoids the problem of ray leakage of the shielding device; secondly, the shielding device has reliable safety and stability, is not contacted with the hotspot equipment, avoids the load damage of the hotspot equipment, and realizes the integral stability among the shielding modules; thirdly, the shielding device has strong convenience and simple use, meets the operation requirements of quick installation and removal of the shielding device, and reduces the exposure dose of operators; and fourthly, the device has certain universality, the shielding device can be combined into different shapes according to the positions and the structures of the hot spots, and the shielding protection range can be expanded through the combined application of a plurality of sets of devices, so that the general requirement of integrally shielding various positions and various types of hot spots is met.
The utility model provides a tunnel type abnormal shape radiation shield assembly, includes hollow cylinder module 1, and first tunnel supports shielding module 2, and the second tunnel supports shielding module 3, tunnel shielding module 4, first turning shielding module 5, second turning shielding module 6, folding handle 7, and connection lock catch 8, each shielding module passes through the fixed formation an organic whole of hasp. The tunnel type special-shaped radiation shielding device can be arranged into shielding assemblies with various shapes according to the hot spot pipeline structure.
As shown in fig. 1-3, a plurality of tunnel shielding modules 4 are connected to each other, one end of a structure formed by the plurality of tunnel shielding modules 4 is connected to the tunnel supporting shielding module, the upper part of the tunnel supporting shielding module is connected to a hollow cylindrical module 1, the other end of the structure formed by the plurality of tunnel shielding modules 4 is connected to a corner shielding module, and the corner shielding module is further connected to a structure formed by the plurality of tunnel shielding modules 4. The corner shielding module comprises a first corner shielding module 5 and a second corner shielding module 6, the first corner shielding module 5 and the second corner shielding module 6 are connected through a connecting lock catch 8, and the first corner shielding module 5 and the second corner shielding module 6 are respectively provided with a folding handle 7.
The tunnel supporting and shielding module comprises a first tunnel supporting and shielding module 2 and a second tunnel supporting and shielding module 3 which are connected with each other, and a hole is formed in the middle of the joint of the second tunnel supporting and shielding module 3 and the first tunnel supporting and shielding module 2.
Wherein, the parameters of each component are as follows:
the tunnel shielding module 4 is integrally molded by adopting 304 stainless steel with the thickness of 3mm and integrally molded by opening a die, a lead shielding layer with the thickness of 36mm is cast inside, and the integral thickness of the module material is 42 mm.
The upper part of the tunnel shielding module is of a hollow semi-cylindrical structure, the outer circle radius is 167mm, the inner circle radius is 125mm, and the width is 126 mm. The height of the arms on two sides connected by the hollow semicylinder is 125mm, the width of the arms is 126mm, and the outer diameter distance and the inner diameter distance of the arms on two sides are 334mm and 250mm respectively.
The combined parts of the front side surface and the rear side surface of the shielding module adopt a step-shaped structure, so that ray leakage in the shielding use process can be avoided when the shielding module is combined and applied.
The two tunnel shielding modules 4 are locked through hasps and buckles (purchase model 001-4rZvJ) arranged on the side edges, hasps are arranged in the middle of the two side edges of the tail groove, and buckles are arranged in the middle of the two side edges of the head convex groove.
The hollow cylindrical module 1 comprises two hollow semicylinders with symmetrical structures, the left half hollow cylindrical module and the right half hollow cylindrical module are integrally formed by adopting a die sinking process of 304 stainless steel with the thickness of 3mm, a lead shielding layer with the thickness of 40mm is cast inside, and the whole thickness of the module material is 46 mm. A foldable handle (purchase model UNFS-80) is respectively installed on the outer sides of the two hollow semi-cylinders, embedded welding is adopted to enhance the firmness of the handles, and meanwhile, the shielding modules are convenient to detach and install.
The outer circle radius of the hollow cylindrical module 1 is 96mm, the inner circle radius is 50mm, and the height is 66 mm. The left and right semi-hollow cylindrical joint parts are of a stepped structure, ray leakage in the shielding use process can be avoided, and meanwhile, the side walls on the two sides of the joint part are respectively provided with a hasp and a buckle head for radially fixing the module.
The hollow cylinder module 1 comprises two types of a base hollow cylinder module and a middle hollow cylinder module. The upper part of the base hollow cylindrical module is of a convex groove structure, and the lower part of the base hollow cylindrical module is a plane; the upper part of the middle hollow cylindrical module is of a convex groove structure, and the lower part of the middle hollow cylindrical module is of a groove structure. The middle hollow cylindrical module is fixedly arranged above the base hollow cylindrical module through the connection of the concave-convex grooves, and ray leakage in the using process can be avoided. If necessary, a plurality of middle hollow cylindrical modules can be installed in a superposed mode to expand the shielding height.
The corner shielding module comprises a first corner shielding module 5 and a second corner triangular shielding module 6, the first corner shielding module 5 and the second corner triangular shielding module 6 are triangular shielding modules which are combined to form a hollow cuboid structure, the two triangular shielding modules are integrally formed by adopting a 1.5mm thick 304 stainless steel die sinking, a 36mm thick lead shielding layer is cast inside, and the whole thickness of the module material is 39 mm.
The cuboid structure of the corner shielding module has the overall size of 336mm long, 324mm wide and 290mm high and comprises three shielding planes of a top surface, a left side surface and a right side surface.
The left side surface of the first corner shielding module 5 is a rectangle with the length of 336mm and the height of 290mm, the top surface is a right-angled triangle, two right-angled sides are respectively 336mm and 324mm long, wherein the joint of the right-angled side with the height of 290mm is a groove structure, a hasp is arranged at the height side, and a buckle head is arranged at the other height side; the bevel edge of the top surface triangle is designed into a step structure and is provided with a buckle head; and a folding handle is welded and installed in the middle of the left side surface and the top surface in an embedded manner.
The right side surface of the second corner shielding module 6 is 330mm long and 290mm high, the top surface is a right-angled triangle, two right-angled sides are respectively 330mm long and 324mm long, wherein the intersection edge of the 324mm right-angled side and the 290 height side is a groove structure, and two height sides are respectively provided with a hasp; the bevel edge of the top surface triangle is designed into a step structure and is provided with a hasp; and a folding handle is welded and installed in the middle of the right side surface and the top surface in an embedded manner.
The triangular bevel edges of the top surfaces of the two modules are connected through steps to form a rectangular plane and are fastened through hasps and buckles.
The tunnel supports the shielding module, and whole molding adopts 3mm thick 304 stainless steel die sinking integrated into one piece, and 36mm thickness lead shielding layer is cast to inside, and the whole thickness of module material is 42 mm.
The tunnel supporting and shielding module comprises a first tunnel supporting and shielding module 2 and a second tunnel supporting and shielding module 3, and the first tunnel supporting and shielding module and the second tunnel supporting and shielding module are identical in overall style and size with the tunnel shielding module except for a top structure.
A platform with the length of 200mm, the width of 80mm and the height of 25mm is designed and installed on the side edge of a convex groove at the top of the first tunnel supporting and shielding module 2, and a semi-hollow cylinder with the inner wall radius of 48mm, the thickness of 2mm and the height of 33mm is designed and installed at the center position of the side edge of the convex groove of the platform.
A platform with the length of 200mm, the width of 80mm and the height of 25mm is arranged on the side edge of a groove in the top of the second tunnel supporting shielding module 3, and a semi-hollow cylinder with the inner wall radius of 48mm, the thickness of 2mm and the height of 33mm is arranged at the center of the side edge of the platform groove.
The tops of the first tunnel supporting and shielding module 2 and the second tunnel supporting and shielding module 3 can be combined into a platform with the length of 200mm, the width of 160mm and the height of 25mm, and a hollow cylinder with the inner wall radius of 48mm, the thickness of 2mm and the height of 33mm is combined at the center of the platform.
The top platform and the semi-hollow cylinder are welded into an integral structure. The two side edges of the left and right side supporting modules are fastened by hasps and buckles.
The shielding performance of the tunnel-type profiled radiation shielding device is mainly dependent on the lead material thickness of the shielding module. And (2) performing related shielding calculation by adopting Monte Carlo software and a traditional formula calculation method (or a determinism method) according to the radioactive source item and the intensity of the radiation source of the related strong radiation field pipeline in the nuclear power plant, and determining the design thickness of a lead material of the shielding module under the condition of meeting the radiation control related management regulation of the nuclear power plant.
The effective lead equivalent of each module of the tunnel type special-shaped radiation shielding device reaches 40mm, and the shielding performance is about 5.7 times of the half-value layer thickness of Cs-137 gamma rays (0.662Mev) and about 3.3 times of the half-value layer thickness of Co-60 gamma rays (1.25 Mev). The shielding performance of the lead-free shielding material is about 8 times that of a single-layer soft lead screen commonly used in a power plant.
The joint parts of the shielding modules are designed to be connected through the stepped concave-convex grooves, so that the phenomenon that the shielding modules are connected with part of rays to leak can be effectively avoided, meanwhile, the shielding modules are convenient to install and disassemble on site, and the on-site operation time of the shielding body is saved.
Each shielding module of tunnel type abnormal shape radiation shield assembly adopts cascaded mode to splice the design, overlaps the mode of pressing through shielding module one by one and installs, adopts the hasp locking to fix between each adjacent shielding piece at last, can realize each shielding module accurate positioning and equipment, also can effectively prevent collapsing of shielding module, reinforcing shield assembly's security.
The tunnel type special-shaped radiation shielding device is a detachable radiation shielding device, a high-strength structural material modular design is adopted, and potential safety hazards caused by ray leakage or direct compression on an equipment pipeline due to material falling are not needed to worry after installation.
All parts of the tunnel type special-shaped radiation shielding device adopt an integrated structure, and no scattered parts exist, so that the tunnel type special-shaped radiation shielding device is convenient to store and use.
The similar parts of the tunnel type special-shaped radiation shielding device are designed according to standard specifications, can be matched and used at will and are convenient to install.
The tunnel type special-shaped radiation shielding device is mainly formed by combining all small shielding modules, can be decomposed and transported, and is convenient to operate. And after the shielding body is assembled, the shielding protection range is comprehensive, the occupied space is small, and the influence on other operations is small.
The tunnel type special-shaped radiation shielding device is only required to be positioned, stacked and fixed in sequence during installation, installation difficulty is low, operation is very convenient, an operator can master installation requirements through simple training, and the installation device does not need the cooperation of other operation departments and can also provide effectiveness for radiation shielding operation.
The tunnel type special-shaped radiation shielding device does not need regular maintenance after being installed, so that the operation time and the working intensity of operators can be reduced, the radiation level of an operation site is greatly reduced, unnecessary radiation dose is reduced, and the resource cost can be saved.
The tunnel type special-shaped radiation shielding device is detachably designed, has strong universality, and can be installed into shielding assemblies of various types according to the hot spot pipeline structure, such as linear assemblies, plane corner assemblies, vertical corner assemblies and other special-shaped assemblies. For a nuclear power plant with multiple sets, the method can be alternately applied among different sets according to actual needs, so that a single set of equipment and multiple sets can be shared, the purchase cost is saved, and the method has certain economical efficiency.
The utility model discloses an installation as follows:
(1) vertical elbow combined installation
Step 1: and 1 first tunnel supporting and shielding module and 1 second tunnel supporting and shielding module are selected, and the semi-cylindrical directions of the tops of the two modules are opposite to each other to form a complete cylinder.
Step 2: the left tunnel supporting and shielding module and the right tunnel supporting and shielding module are respectively covered on the left side and the right side of the vertical elbow, the two module combining parts are tightly connected through the concave-convex groove, and the two side lock catches are fastened again to complete the installation of the tunnel supporting and shielding module.
And step 3: selecting 1 left base hollow cylinder module (figure 10-12) and 1 right base hollow cylinder module, respectively installing the two modules at the left and right sides of the top cylinder of the tunnel supporting and shielding module, with the convex side facing upwards, and tightly connecting the left and right modules through a stepped structure. And (5) fastening the lock catches at the two sides to complete the installation of a set of base hollow cylindrical module.
And 4, step 4: selecting 1 middle hollow cylindrical module on the left side and 1 middle hollow cylindrical module on the right side, wherein the two modules are respectively arranged on the left side and the right side of the top of the hollow cylindrical module of the base, and the groove at the bottom of the two modules is connected with the convex groove at the top of the hollow cylindrical module of the base. The lock catches at the two sides of the middle hollow cylindrical module are fastened to finish the combined installation of the base and the middle hollow cylindrical module (figures 13 and 14).
And 5: other modules can be arranged on both sides of the tunnel supporting and shielding module to realize various combined structures.
(2) Linear combination mounting
Step 1: selecting a plurality of tunnel shielding modules, and installing 1 tunnel shielding module along one side direction of the hot spot pipeline.
Step 2: the side groove of the 2 nd tunnel shielding module and the side convex groove of the 1 st tunnel shielding module are oppositely arranged and tightly connected, and the lock catches at the outer sides of the two shielding modules are fastened (figure 15).
And step 3: and according to the length of the hot spot pipeline, sequentially installing other tunnel shielding modules on the left side or the right side of the combination according to the step 2.
(3) Plane elbow combined installation
Step 1: 1 left and right corner shielding module are selected, the hypotenuses of the triangular planes of the two modules being opposite.
Step 2: firstly, a left corner shielding module or a right corner shielding module is installed along one side edge of the pipeline elbow, and then another corner shielding module is installed along the other side edge of the elbow, so that the inclined edges of triangular planes of the two modules are opposite, and the stepped structures of the joint parts are connected tightly.
And step 3: and fastening each joint part to connect the lock catch, thus completing the installation of a set of corner shielding modules.
And 4, step 4: and other modules can be arranged on two side edges of the corner shielding module to realize various combined structures.
The plane elbow assembly and the vertical elbow assembly are provided with certain fine adjustment spaces, and the installation positions can be properly fine adjusted according to actual requirements when a plurality of sets of assemblies are installed.
The utility model discloses a use as follows:
(1) radiation shielding scheme determination
The shielding device can realize multiple using modes according to the actual situation of the field hot spot pipeline, and determines the range, the structure type and the required shielding module number of shielding measures by analyzing the conditions of the spatial position, the influence area and the like of the hot spot pipeline.
The device is mainly customized for the hot spot of the RCP215VP balance pipeline of a nuclear island plant of a nuclear power plant, the hot spot pipeline has the heat preservation diameter of about 220mm, comprises a vertical elbow with the height of about 400mm and a horizontal right-angle elbow (the length of one arm is about 700mm, the length of the other arm is about 550mm), and is designed into a shielding assembly with various special-shaped structures. The special-shaped structure shielding assembly body needs 1 set of hollow cylindrical base shielding module and middle shielding module respectively, 1 set of tunnel supporting shielding module, 1 set of corner shielding module and 4 tunnel shielding modules.
(2) Shielding device using method
Selecting 1 set of tunnel supporting shielding module, 1 set of hollow cylindrical base shielding module and 1 set of hollow cylindrical middle module, and completing shielding installation at the vertical elbow of the pipeline according to a vertical elbow combined installation method, as shown in figure 13; selecting 2 tunnel shielding modules, and completing the combined installation with the tunnel supporting shielding modules according to a linear combined installation method, as shown in fig. 17;
selecting 1 set of corner shielding module, and completing the combined installation with the tunnel shielding module according to the plane elbow combined installation method, as shown in figure 16;
and selecting 2 tunnel shielding modules, and finishing the combined installation with the other side edge of the corner shielding module according to a linear combined installation method. The integrally assembled shielding assembly with the special-shaped structure is shown in figure 1.
2) Shielding device dismantling method
Firstly, sequentially opening the lock catches of the joint parts of the shielding modules; secondly, removing the tunnel shielding module and the corner shielding module; then sequentially removing the hollow cylindrical module and the tunnel supporting and shielding module from top to bottom; and finally, transferring all the components.
3) Other structure combination using method
When the shielding range is wide or special shielding requirements exist, the shielding bodies with specific structures can be combined according to actual requirements, and the specific installation methods are approximately similar. The common combined use modes of the several types are as follows:
shielding and protecting hot spots of the linear pipeline only, determining the number of tunnel shielding modules according to the length of the hot spot pipeline, and forming a shielding body according to a linear combined installation method, as shown in figure 15;
only shielding and protecting the hot spots of the plane elbow, selecting 1 set of corner shielding module and a plurality of tunnel shielding modules, and forming a shielding body according to a linear combined installation method and a plane elbow combined installation method, as shown in figure 16;
the shielding protection of the hot spot of the vertical elbow is realized by selecting 1 set of tunnel supporting shielding module, a plurality of sets of hollow cylindrical shielding modules and a plurality of tunnel shielding modules, and forming an L-shaped or T-shaped shielding body according to a vertical elbow combined installation method and a linear combined installation method, as shown in figures 17 and 18. The plurality of vertical elbows can also form a Pi-shaped shielding combination body shown in 19.
Claims (15)
1. A tunnel type abnormal-shaped radiation shielding device is characterized in that: the shielding module comprises a hollow cylinder module, a first tunnel supporting shielding module, a second tunnel supporting shielding module, a tunnel shielding module, a first corner shielding module, a second corner shielding module, a folding handle and a connecting lock catch, wherein the shielding modules are fixedly integrated through the lock catch.
2. A tunnel-type profiled radiation shield as set forth in claim 1, wherein: interconnect between a plurality of tunnel shielding module, the one end and the tunnel of the structure that a plurality of tunnel shielding module are constituteed support shielding module to be connected, and tunnel support shielding module upper portion is connected with hollow cylinder module, and the other end of the structure that a plurality of tunnel shielding module are constituteed is connected with corner shielding module, and corner shielding module still is connected with the structure that a plurality of tunnel shielding module are constituteed.
3. A tunnel-type profiled radiation shield as set forth in claim 2, wherein: the corner shielding module comprises a first corner shielding module and a second corner shielding module, the first corner shielding module is connected with the second corner triangular shielding module through a connecting lock catch, and the first corner shielding module and the second corner shielding module are respectively provided with a folding handle.
4. A tunnel-type profiled radiation shield as set forth in claim 2, wherein: the tunnel support shielding module comprises a first tunnel support shielding module and a second tunnel support shielding module which are connected with each other, and a hole is formed in the middle of the joint of the second tunnel support shielding module and the first tunnel support shielding module.
5. A tunnel-type profiled radiation shield as set forth in claim 1, wherein: and lead shielding layers are cast inside the hollow cylindrical module, the tunnel supporting shielding module, the tunnel shielding module and the corner shielding module.
6. A tunnel-type profiled radiation shield as set forth in claim 1, wherein: the tunnel shielding module is locked by buckles and buckles arranged on the side edges, buckles are arranged in the middle of the two side edges of the tail groove, and buckles are arranged in the middle of the two side edges of the head convex groove.
7. A tunnel-type profiled radiation shield as set forth in claim 1, wherein: the hollow cylinder module comprises two hollow semicylinders with symmetrical structures.
8. A tunnel-type profiled radiation shield as set forth in claim 7, wherein: the hollow cylinder joint part is of a step-shaped structure, and a hasp and a buckle head are respectively arranged on the side walls of two sides of the joint part and used for radially fixing the module.
9. A tunnel-type profiled radiation shield as set forth in claim 7, wherein: the hollow cylinder module comprises a base hollow cylinder module and a middle hollow cylinder module.
10. A tunnel-type profiled radiation shield as claimed in claim 9, wherein: the upper part of the base hollow cylindrical module is of a convex groove structure, and the lower part of the base hollow cylindrical module is a plane.
11. A tunnel-type profiled radiation shield as claimed in claim 9, wherein: the upper part of the middle hollow cylindrical module is of a convex groove structure, and the lower part of the middle hollow cylindrical module is of a groove structure.
12. A tunnel-type profiled radiation shield as claimed in claim 9, wherein: the middle hollow cylindrical module is fixedly arranged above the base hollow cylindrical module through the connection of the concave-convex grooves, and ray leakage in the using process can be avoided.
13. A tunnel-type profiled radiation shield as set forth in claim 1, wherein: the corner shielding module comprises a first corner shielding module and a second corner shielding module, and the first corner shielding module and the second corner shielding module are triangular shielding modules.
14. A tunnel-type profiled radiation shield as set forth in claim 1, wherein: a platform is installed on the side edge of a convex groove in the top of the first tunnel supporting and shielding module, and a half hollow cylinder is installed in the center of the side edge of the convex groove of the platform.
15. A tunnel-type profiled radiation shield as set forth in claim 1, wherein: and a platform is arranged on the side edge of the groove at the top of the second tunnel supporting shielding module, and a half hollow cylinder is arranged at the center of the side edge of the platform groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021471818.9U CN212516594U (en) | 2020-07-23 | 2020-07-23 | Tunnel type abnormal shape radiation shield assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021471818.9U CN212516594U (en) | 2020-07-23 | 2020-07-23 | Tunnel type abnormal shape radiation shield assembly |
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| CN212516594U true CN212516594U (en) | 2021-02-09 |
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| CN202021471818.9U Active CN212516594U (en) | 2020-07-23 | 2020-07-23 | Tunnel type abnormal shape radiation shield assembly |
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2020
- 2020-07-23 CN CN202021471818.9U patent/CN212516594U/en active Active
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