Radioactive source production hot cell peep window

Abstract

The invention relates to the technical field of hot cell structures, in particular to a radioactive source production hot cell squint window. The hot chamber squint window comprises a middle frame, wherein a glass mounting area is arranged in the middle frame; the first lead glass is mounted in the protective frame, the protective frame and the first lead glass form a plurality of groups of glass assemblies, the glass assemblies are mounted in the glass mounting area, the plurality of groups of glass assemblies are overlapped in the glass mounting area, and the protective frames of the adjacent glass assemblies are attached to each other; the indoor side pressing ring and the outdoor side pressing assembly 400 are connected to the two ends of the middle frame correspondingly, the multiple sets of glass assemblies are pressed through the indoor side pressing ring and the outdoor side pressing assembly 400, and the indoor side pressing ring and the outdoor side pressing assembly 400 are connected with the corresponding protection frames correspondingly. The first lead glass of the hot chamber squint window can be conveniently disassembled and assembled in the middle frame, the damage probability of the first lead glass is greatly reduced, and the distance between the adjacent first lead glass is conveniently adjusted, so that the distance between the adjacent glass better meets the requirement.

Description

Technical Field

[0001] The invention relates to the technical field of hot chamber structures, in particular to a peep window for a radioactive source production hot chamber. Background Art

[0002] A hot chamber is a laboratory with a very thick shielding layer and special operating equipment. It is specially used for studying high-intensity radioactive materials. In order to facilitate the staff to check the situation inside the hot chamber, a peep window is installed on the cast iron screen of the hot chamber (which can be understood as the wall of the hot chamber).

[0003] The hot room peep window in the related art is as follows Fig. 9 As shown, it includes a glass frame 1000, a first lead glass 210, an outdoor pressing mechanism 900 and an indoor pressing ring 800. A plurality of first lead glasses 210 are placed vertically and stacked together to form a glass group. The glass is assembled in the glass frame 1000. The indoor pressing ring 800 and the outdoor pressing mechanism 900 are respectively connected to the two ends of the glass frame 1000 by bolts. The above glass group is pressed in the glass frame 1000 by the indoor pressing ring 800 and the outdoor pressing mechanism 900. The wall of the hot room includes a cast iron screen 500, the cast iron screen 500 is provided with a window, and the glass frame 1000 is installed in the window by bolts, the outdoor clamping mechanism 900 is installed with a tempered glass 450, and the cast iron screen 500 is also installed with an inner frame assembly 600 for blocking the window from the inside, and the inner frame assembly 600 is provided with a second lead glass 610 corresponding to the first lead glass 210 for easy perspective. Through the tempered glass 450, the first lead glass 210 and the second lead glass 610, the operator can check the situation in the hot room.

[0004] However, the method of directly inserting the first lead glass 210 into the glass frame 1000 has the following problems: 1. The edge of the first lead glass 210 is in direct contact with the glass frame 1000 and is easily damaged. In addition, the first lead glass 210 is very heavy. Therefore, when installing the first lead glass 210, the first lead glass 210 needs to be placed in the glass frame 1000 in a specific posture (kept horizontal), which results in inconvenience in installation. 2. The adjacent first lead glasses 210 are in direct contact, which makes it difficult to ensure close contact and adjust the distance between them; 3. When the indoor pressing ring 800 and the outdoor pressing mechanism 900 are pressed, they directly act on the outer wall of the first lead glass 210 located on both sides, which may easily cause the first lead glass 210 to be crushed. Summary of the invention

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a radioactive source production hot room peep window, comprising: The middle frame contains the glass installation area; A first lead glass is detachably fixedly installed in a protective frame, wherein the protective frame and the first lead glass form a glass assembly, and the glass assembly is installed in the glass installation area. The glass assemblies are in multiple groups, and the multiple groups of glass assemblies overlap in the glass installation area, and the protective frames of adjacent glass assemblies are in contact with each other; The indoor side pressure ring and the outdoor side pressure assembly are respectively detachably fixedly connected to the two ends of the middle frame, and multiple groups of glass assemblies are pressed by the indoor side pressure ring and the outdoor side pressure assembly, and the indoor side pressure ring and the outdoor side pressure assembly are respectively in contact with the corresponding protective frame.

[0006] Furthermore, in order to better implement the present invention, the protection frame includes: The annular frame has a first protrusion coaxial with the annular frame at one end, and the first protrusion protrudes from the inner ring wall of the annular frame; A pressure ring, an inner ring wall of which is provided with a second protrusion coaxial therewith, the pressure ring is detachably and fixedly connected to the other end of the annular frame, the first protrusion and the second protrusion are respectively connected to the two end edges of the first lead glass to clamp the first lead glass between the first protrusion and the second protrusion.

[0007] Furthermore, in order to better realize the present invention, chamfers are provided on both end edges of the first lead glass, and the first convex ring and the second convex ring are both provided with inclined surfaces adapted to the chamfers, the inclined surfaces cooperate with the chamfers, and a first sealing ring is padded between the mutually cooperating inclined surfaces and chamfers, and the first sealing ring surrounds the first lead glass.

[0008] Furthermore, in order to better implement the present invention, the pressing ring is bolted to the other end of the annular frame through a first bolt, so that the pressing ring and the annular frame are detachably fixedly connected together.

[0009] Furthermore, in order to better implement the present invention, both ends of the protection frame protrude 0.125 mm from the first lead glass, so that the distance between two adjacent pieces of first lead glass is 0.25 mm.

[0010] Furthermore, in order to better implement the present invention, it also includes: A second sealing ring, which is installed between the inner pressure ring of the chamber and the corresponding protection frame; A third sealing ring, cushioned between the outdoor side pressing assembly and the corresponding protection frame; The second sealing ring and the third sealing ring surround the corresponding first lead glass.

[0011] Furthermore, in order to better implement the present invention, it also includes: The indoor inner pressure ring is bolted to one end of the middle frame by a second bolt, so that the indoor inner pressure ring and the middle frame are detachably fixedly connected together, and a fourth sealing ring is installed between the indoor inner pressure ring and the middle frame; The outdoor side clamping assembly is bolted to the other end of the middle frame by a third bolt, so that the outdoor side clamping assembly and the middle frame are detachably fixedly connected together, and a fifth sealing ring is installed between the outdoor side clamping assembly and the middle frame; The fourth sealing ring and the fifth sealing ring surround the glass component.

[0012] Further, in order to better implement the present invention, the outdoor side pressing assembly includes: The plate body is bolted and fixed to the middle frame by the third bolts, the fifth sealing ring is installed between the plate body and the middle frame, and a mounting groove is provided on the plate body; The tempered glass is accommodated in the installation groove, the third sealing ring is installed between the tempered glass and the corresponding protection frame, and the sixth sealing ring is also installed between the tempered glass and the groove wall of the installation groove.

[0013] Furthermore, in order to better realize the present invention, the number of the glass assemblies is six groups, and, from the indoor side to the outdoor side, the lead glass models of the six groups of glass assemblies are K709, ZF501, ZF501, ZF6, ZF6, and ZF6 respectively.

[0014] Furthermore, in order to better realize the present invention, the wall of the hot chamber includes a cast iron screen, the cast iron screen is provided with a window, and the middle frame is installed in the window; The radiation source production hot room peep window also includes an inner frame component, which is installed on the cast iron screen and blocks the window from the indoor side. The inner frame component is configured with a second lead glass that facilitates perspective, and the model of the second lead glass is K709.

[0015] The beneficial effects of the present invention are embodied in that the peep window of the hot room for producing a radiation source comprises a middle frame, a first lead glass, a protective frame, an indoor side pressure ring and an outdoor side pressing assembly, a glass installation area is arranged in the middle frame, and the first lead glass is installed in the protective frame. At this time, the first lead glass and the protective frame form a glass assembly, and the glass assembly is installed in the above-mentioned installation area. The number of the glass assemblies is multiple groups, and the multiple groups of glass assemblies overlap in the glass installation area, and the protective frames of adjacent glass assemblies are attached to each other. In this way, by setting the distance between the end face of the protective frame and the surface of the first lead glass, it is possible to The spacing between adjacent first lead glasses can be conveniently controlled, and the indoor side pressure ring and the outdoor side pressure assembly are respectively detachably fixedly connected to the two ends of the middle frame, and multiple groups of the above glass assemblies are pressed in the middle frame by the indoor side pressure ring and the outdoor side pressure assembly, and the indoor side pressure ring and the outdoor side pressure assembly are respectively in contact with the corresponding protective frames, that is, the indoor side pressure ring and the outdoor side pressure assembly are pressed on the corresponding protective frame surface instead of directly pressing on the surface of the first lead glass, therefore, the indoor side pressure ring and the outdoor side pressure assembly can be prevented from causing damage to the first lead glass.

[0016] Through the above structure, compared with the prior art, the first lead glass in the peephole of the radiation source production hot chamber provided by the present invention can be directly loaded into the protective frame at the assembly site, and then the glass assembly consisting of the first lead glass and the protective frame can be loaded into the middle frame. Since the protective frame protects the first lead glass from the outside, more postures and tools can be used to assist in loading the glass assembly into the middle frame. Moreover, during the loading process, there is no need to worry about the edge of the first lead glass being damaged by the middle frame or external objects, so loading is more convenient. Furthermore, due to the isolation effect of the protective frame, the first lead glass will not be in direct contact with the middle frame, and the above-mentioned indoor inner pressure ring and outdoor outer clamping assembly will not be in direct contact with the first lead glass, and the lead glasses in the middle frame will not be in direct contact with each other, so the lead glass can be better protected.

[0017] Therefore, the first lead glass of the peephole window of the radiation source production hot chamber provided by the present invention can be easily disassembled and assembled from the middle frame, and the probability of damage to the first lead glass is greatly reduced. Moreover, the spacing between adjacent first lead glasses can also be easily adjusted so that the spacing between adjacent glasses better meets the requirements, thereby ensuring the perspective effect of the peephole window and making it more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a peep window for a radioactive source production hot chamber provided in an embodiment of the present invention; Figure 2 for Figure 1 A local enlarged view of area A; Figure 3 for Figure 1 A local enlarged view of area B in FIG. Figure 4 A schematic diagram of the structure of a glass assembly provided by an embodiment of the present invention; Figure 5 for Figure 4 A local enlarged view of the C region; Figure 6 is a schematic structural diagram of a first lead glass in an embodiment of the present invention; Figure 7 is a schematic structural diagram of a ring frame in an embodiment of the present invention; Figure 8 Schematic diagram of the structure of the pressing ring in the embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a hot room peep window in the prior art; Fig.10 for Fig. 9 A local enlarged view of the D region; Fig.11 for Fig. 9 A local enlarged view of area E in FIG.

[0019] Reference numerals: 1-middle frame, 200-glass assembly, 210-first lead glass, 211-chamfer, 220-protection frame, 221-annular frame, 2211-first convex ring, 222-pressure ring, 2221-second convex ring, 223-inclined surface, 224-first bolt, 230-first sealing ring, 300-indoor side pressure ring, 310-second sealing ring, 320-second bolt, 330-fourth sealing ring, 400- Outdoor side clamping assembly, 410-third sealing ring, 420-third bolt, 430-fifth sealing ring, 440-plate body, 450-tempered glass, 460-sixth sealing ring, 500-cast iron screen, 600-inner frame assembly, 610-second lead glass, 700-sealing gasket, 800-indoor clamping ring, 900-outdoor clamping mechanism, 910-inner pressure plate, 920-outer pressure plate, 1000-glass frame. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: Reference Figure 1-Figure 8 As shown, the radioactive source production hot chamber viewing window provided in this embodiment includes a middle frame 100, a first lead glass 210, a protective frame 220, an indoor side pressure ring 300 and an outdoor side pressing assembly 400, wherein: The middle frame 100 is a tubular structure, and a glass installation area is formed inside the middle frame 100. The outer wall of the middle frame 100 is provided with a mounting boss. The wall of the radiation source production hot room includes a cast iron screen 500, and the cast iron screen 500 is provided with a window. The middle frame 100 is inserted into the window. The mounting boss is fixedly connected to the outer wall of the cast iron screen 500 by bolts. A sealing structure is installed between the mounting boss and the cast iron screen 500 to prevent leakage at the contact position between the mounting boss and the cast iron screen 500. In this way, the middle frame 100 has one end close to the inside of the hot room and the other end close to the outside of the hot room, that is, the two ends of the middle frame 100 are close to the inside of the hot room and the outside of the hot room respectively.

[0022] The first lead glass 210 is installed in the protective frame 220. Specifically, the first lead glass 210 can be installed in the protective frame 220 by a fixed connection (e.g., bonding) or by a detachable manner. This embodiment is described by taking the detachable manner as an example, as described below. At this time, the first lead glass 210 and the protective frame 220 form a glass assembly 200, which is installed in the above-mentioned installation area.

[0023] The glass assemblies 200 are in multiple groups, and the multiple groups of glass assemblies 200 overlap in the glass installation area. Figure 1 As shown, the outer diameters of the first lead glasses 210 of the multiple groups of glass assemblies 200 are different. Optimally, the glass assemblies 200 are placed vertically in the middle frame 100, and the protective frames 220 of adjacent glass assemblies 200 are close to each other. In this way, by setting the distance between the end faces of the protective frames 220 and the surface of the first lead glasses 210, the spacing between adjacent first lead glasses 210 can be conveniently controlled. Optionally, both end faces of the protective frames 220 in this embodiment are planes, and the distance between the end faces and the surface of the first lead glasses 210 is 0.25 mm. In this way, when multiple glass assemblies 200 are overlapped and pressed together, the outer walls of the protective frames 220 of adjacent glass assemblies 200 are close to each other, so that the spacing between adjacent lead glasses is 0.5 mm, which has a better refraction effect on light, thereby obtaining a better perspective effect.

[0024] The indoor side pressure ring 300 and the outdoor side pressure assembly 400 are respectively detachably fixedly connected to the two ends of the middle frame 100, and the multiple groups of the above-mentioned glass assemblies 200 are pressed in the middle frame 100 by the indoor side pressure ring 300 and the outdoor side pressure assembly 400, and the indoor side pressure ring 300 and the outdoor side pressure assembly 400 are respectively in contact with the corresponding protective frame 220, that is, the indoor side pressure ring 300 and the outdoor side pressure assembly 400 are pressed on the surface of the corresponding protective frame 220, rather than directly pressed on the surface of the first lead glass 210, therefore, the indoor side pressure ring 300 and the outdoor side pressure assembly 400 can be prevented from causing damage to the first lead glass 210.

[0025] Through the above structure, compared with the prior art, the first lead glass 210 in the peephole of the radiation source production hot chamber provided by the present invention can be directly loaded into the protective frame 220 at the assembly site, and then the glass assembly 200 composed of the first lead glass 210 and the protective frame 220 can be loaded into the middle frame 100. Since the protective frame 220 protects the first lead glass 210 from the outside, more postures and tools can be used to assist in loading the glass assembly 200 into the middle frame 100. In addition, during the loading process, there is no need to worry about the edge of the first lead glass 210 being damaged by the middle frame 100 or external objects, so loading is more convenient. Furthermore, due to the isolation effect of the protective frame 220, the first lead glass 210 will not be in direct contact with the middle frame 100, and the above-mentioned indoor inner pressure ring 300 and outdoor outer clamping assembly 400 will not be in direct contact with the first lead glass 210, and the first lead glass 210 in the middle frame 100 will not be in direct contact with each other, so the first lead glass 210 can be better protected.

[0026] It is worth noting that in this embodiment, a lifting tool or a pneumatic suction cup device can be used to lift the glass assembly 200 so that the glass assembly 200 is horizontal, and the middle frame 100 is set horizontally, and then the glass assembly is placed in the middle frame 100. A lifting device can also be used to lift the glass assembly 200 to make it enter a suitable position in the middle frame 100.

[0027] Therefore, in the radiation source production hot chamber peep window provided by the present invention, the first lead glass 210 can be easily disassembled and assembled from the middle frame 100, and the probability of damage to the first lead glass 210 is greatly reduced, and the spacing between adjacent first lead glasses 210 is also convenient to adjust, so that the spacing between adjacent glasses is more in line with the requirements, thereby ensuring the perspective effect of the peep window and making it more practical.

[0028] An optional implementation of this embodiment is as follows: Figure 4-Figure 8 As shown, the protective frame 220 includes an annular frame body 221 and a pressing ring 222, wherein: The annular frame 221 may be a rectangular frame, and a first protrusion 2211 coaxial therewith is provided at one end of the annular frame 221. Optimally, the first protrusion 2211 and the annular frame 221 may be welded or integrally formed, and the first protrusion 2211 protrudes from the inner ring wall of the annular frame 221, that is, the inner diameter of the first protrusion 2211 is smaller than the inner diameter of the annular frame 221.

[0029] The inner diameter and outer diameter of the pressing ring 222 are both adapted to the above-mentioned annular frame 221. A second protrusion 2221 coaxial with the pressing ring 222 is provided on the inner ring wall of the pressing ring 222. The second protrusion 2221 and the pressing ring 222 can be welded or integrally formed. The above-mentioned pressing ring 222 is detachably fixedly connected to the other end of the above-mentioned annular frame 221. At this time, the first protrusion 2211 and the second protrusion 2221 are respectively located at the two ends of the protective frame 220, and the first lead glass 210 is installed between the pressing ring 222 and the annular frame 221, and the two end edges of the first lead glass 210 are respectively connected to the above-mentioned first protrusion 2211 and the second protrusion 2221, so that the first lead glass 210 is clamped by the first protrusion 2211 and the second protrusion 2221.

[0030] In this way, before the first lead glass 210 is loaded into the above-mentioned protective frame 220, it is necessary to first remove the pressure ring 222 from the annular frame 221 so that the pressure ring 222 and the annular frame 221 are separated, and then the annular frame 221 is placed horizontally, and the first lead glass 210 is lifted by a lifting device or lifted by a lifting mechanism, so that the first lead glass 210 is horizontally loaded into the above-mentioned annular frame, so that one end edge of the first lead glass 210 overlaps the first protrusion 2211 of the annular frame 221, and then the pressure ring 222 is installed on the annular frame 221, so that the second protrusion 2221 of the pressure ring 222 is pressed on the other end edge of the first lead glass 210.

[0031] The protective frame 220 of the above structure has the advantage of being easy to assemble and disassemble, so that the first lead glass 210 can be easily loaded or removed therefrom, and the first convex ring 2211 and the second convex ring 2221 can firmly clamp the first lead glass 210 .

[0032] Optionally, chamfers 211 are provided at both ends of the first lead glass 210, and inclined surfaces 223 matching the chamfers 211 are provided at the first convex ring 2211 and the second convex ring 2221. The press-fit connection between the first convex ring 2211 and the first lead glass 210 is actually the cooperation between the inclined surface 223 on the first convex ring 2211 and the chamfer 211 at one end of the first lead glass 210, and the press-fit connection between the second convex ring 2221 and the first lead glass 210 is actually the cooperation between the inclined surface 223 on the second convex ring 2221 and the chamfer 211 at the other end of the first lead glass 210. A first sealing ring 230 is installed between the mutually matching inclined surfaces 223 and chamfers 211, and the first sealing ring 230 surrounds the first lead glass 210. In this way, with the help of the first sealing ring 230, the gap inside the glass assembly 200 can be sealed, thereby preventing leakage from occurring in the gap between the edge of the first lead glass 210 and the inner wall of the protective frame 220.

[0033] Specifically, the pressure ring 222 in this embodiment is bolted to the other end of the annular frame 221 by a first bolt 224, so that the pressure ring 222 and the annular frame 221 are detachably fixedly connected together, thereby facilitating disassembly and assembly. It should be noted that in order to prevent the first bolt 224 in this embodiment from protruding out of the protective frame 220, specifically, a countersunk hole is opened in the pressure ring 222, and a screw hole is opened on the other end face of the annular frame 221. The above-mentioned bolt passes through the countersunk hole and is screwed with the screw hole, and the nut of the bolt is embedded in the above-mentioned countersunk hole.

[0034] For the hot room peep window, the sealing quality will directly affect its stability in use. If the sealing is not good or the sealing is deformed or damaged, the outside air and dust will enter the first lead glass 210 or other gaps in the peep window, which will affect the refractive index. When water vapor enters the inside of the peep window, it will cause the peep window to be blurred, and mold will adhere to the glass surface. The structure of the hot room peep window in the prior art is as follows: Figure 9-11 As shown, the indoor clamping ring 800 is connected to one end of the glass frame 1000 by bolts, and a sealing gasket 700 is installed at the position where the glass frame 1000 and the indoor clamping ring 800 are connected. The sealing gasket 700 is installed under the first lead glass 210. In this way, the weight of the lead glass will be pressed on the sealing gasket 700, which may easily deform the lower part of the sealing gasket 700, resulting in inconsistency between the lower and upper parts of the sealing gasket 700, thereby causing a poor seal. In addition, the sealing gasket 700 pressed by the lead glass is not easy to replace. The outdoor clamping mechanism 900 includes an outer pressure plate 920 and an inner pressure plate 910. The inner pressure plate 910 and the outer pressure plate 920 overlap and are bolted together by bolts (not shown in the figure), forming an interlayer between the inner pressure plate 910 and the outer pressure plate 920, in which the tempered glass 450 is sandwiched. The inner pressure plate 910 is bolted to the other end of the glass frame 1000 by another bolt, thereby connecting the entire outdoor clamping mechanism 900 to the other end of the glass frame 1000. A sealing gasket 700 is also provided at the position where the inner pressure plate 910 and the glass frame 1000 are connected. The sealing gasket 700 is also installed under a first lead glass 210. Therefore, the sealing gasket 700 also has the above-mentioned technical problems.

[0035] In order to solve this technical problem, the radioactive source production hot chamber viewing window provided in this embodiment further includes a second sealing ring 310 and a third sealing ring 410, wherein: The second sealing ring 310 is cushioned between the indoor side pressure ring 300 and the corresponding protection frame 220. When the indoor side pressure ring 300 is stably connected to the middle frame 100, the second sealing ring 310 is tightly pressed between one side plate surface of the indoor side pressure ring 300 and the end surface of the corresponding protection frame 220. It should be noted that the glass assembly 200 corresponding to the indoor side pressure ring 300 is a group of glass assemblies 200 close to the inside of the hot chamber, and the above-mentioned protection frame 220 corresponding to the indoor side pressure ring 300 is a protection frame 220 of a group of glass assemblies 200 close to the inside of the hot chamber.

[0036] The third sealing ring 410 is cushioned between the outdoor side clamping assembly 400 and the corresponding protection frame 220. When the outdoor side clamping assembly 400 is stably connected to the middle frame 100, the third sealing ring 410 is tightly pressed between the end faces of the outdoor side clamping assembly 400 and the corresponding protection frame 220. It should be noted that the glass assembly 200 corresponding to the outdoor side clamping assembly 400 is a group of glass assemblies 200 close to the outside of the hot room, and the protection frame 220 corresponding to the outdoor side clamping assembly 400 is a protection frame 220 of a group of glass assemblies 200 close to the outside of the hot room.

[0037] Through the above structure, the second sealing ring 310 and the third sealing ring 410 surround the corresponding first lead glass 210, and the second sealing ring 310 and the third sealing ring 410 are sealed from both ends respectively, so as to better seal around the glass assembly 200, thereby enhancing the internal sealing effect of the hot room peep window provided by this embodiment, and effectively preventing the outside air and water vapor from entering the inside of the peep window. Moreover, when the indoor inner pressure ring 300 is removed, the second sealing ring 310 can be disassembled and assembled, and when the outdoor outer pressing assembly 400 is removed, the third sealing ring 410 can be disassembled and assembled, so the second sealing ring 310 and the third sealing ring 410 are easy to disassemble and assemble. Most importantly, the second sealing ring 310 and the third sealing ring 410 will not be pressed by the first lead glass 210, so that the service life and the stability of use are higher, so as to provide a better sealing effect.

[0038] In order to achieve a better sealing effect inside the peep window, optionally, the radiation source production hot chamber peep window provided in this embodiment further includes a fourth sealing ring 330 and a fifth sealing ring 430, specifically: The fourth sealing ring 330 is installed between the indoor pressure ring 300 and the middle frame 100, so as to seal the contact position between the indoor pressure ring 300 and the middle frame 100. In this embodiment, the indoor pressure ring 300 is bolted to one end of the middle frame 100 by the second bolt 320. Specifically, the indoor pressure ring 300 is provided with a through hole, and the end surface of one end of the middle frame 100 is provided with a screw hole. The second bolt 320 passes through the through hole and is screwed to the screw hole. In this way, the indoor pressure ring 300 is detachably attached to the middle frame 100, which is convenient for disassembly and assembly of the indoor pressure ring 300, and further convenient for disassembly and assembly of the second sealing ring 310 and the fourth sealing ring 330.

[0039] The fifth sealing ring 430 is installed between the outdoor clamping assembly 400 and the middle frame 100, so as to seal the contact position between the outdoor clamping assembly 400 and the middle frame 100. In this embodiment, the outdoor clamping assembly 400 is bolted to the other end of the middle frame 100 by the third bolt 420. Specifically, the outdoor clamping assembly 400 is provided with a through hole, and the other end of the middle frame 100 is also provided with a screw hole. The third bolt 420 passes through the through hole and is screwed to the screw hole. In this way, the outdoor clamping assembly 400 and the middle frame 100 are detachably connected together, which is convenient for disassembling the outdoor clamping assembly 400, and then convenient for disassembling the third sealing ring 410 and the fifth sealing ring 430.

[0040] The fourth sealing ring 330 and the fifth sealing ring 430 surround the glass assembly 200, and therefore, the fourth sealing ring 330 and the fifth sealing ring 430 constitute a second layer of sealing. It is easy to understand that the second sealing ring 310 and the third sealing ring 410 constitute a first layer of sealing, thereby better ensuring the sealing of the interior of the peep window and preventing air and water vapor from entering the interior of the peep window.

[0041] Optionally, the outdoor side pressing assembly 400 in this embodiment is different from the outdoor pressing mechanism 900 of the existing peep window, and the outdoor side pressing assembly 400 includes a plate body 440 and a tempered glass 450, wherein: The plate body 440 is bolted to the other end of the middle frame 100 through the third bolt 420, the fifth sealing ring 430 is installed between the plate body 440 and the middle frame 100, the plate body 440 is provided with a mounting groove, the tempered glass 450 is installed in the mounting groove, and the third sealing ring 410 is installed between the tempered glass 450 and the corresponding protection frame 220. The outdoor side pressing assembly 400 of this structure is simpler in structure and more convenient to disassemble and assemble.

[0042] There is no sealing structure between the tempered glass 450 and the outer pressure plate 920 of the outdoor pressing mechanism 900 of the existing peep window, so air and water vapor easily enter the gap between the tempered glass 450 and the outer pressure plate 920 and between the tempered glass 450 and the third sealing ring 410, thereby blurring the peep window and affecting its line of sight and observation effect. In the outdoor side pressing assembly 400 provided in this embodiment, a sixth sealing ring 460 is installed between the plate body 440 and the tempered glass 450, so as to prevent air and water vapor from entering the installation groove and affecting the line of sight and the perspective effect of the peep window.

[0043] An optional implementation of the present embodiment is as follows: In the present embodiment, six groups of the above-mentioned glass assemblies 200 are installed in the above-mentioned middle frame 100, and, from the indoor side to the outdoor side, the models of the first lead glass 210 of the six groups of glass assemblies 200 are K709, ZF501, ZF501, ZF6, ZF6, and ZF6, respectively, so that the shielding effect of the peep window is better and the perspective effect is also ideal.

[0044] Like the prior art, in this embodiment, an inner frame assembly 600 is also installed on the side of the cast iron screen 500 close to the room. The inner frame assembly 600 can block the window on the cast iron screen 500. The hot chamber peep window provided in this embodiment is actually located on the outside of the inner frame assembly 600. The inner frame assembly 600 is configured with a second lead glass 610. The second lead glass 610 corresponds to the first lead glass 210, so as to facilitate perspective and provide a better shielding effect. The model of the second lead glass 610 is K709.

[0045] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or a specific area.

[0046] In the description of the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0049] In the description of the embodiments of the present invention, it should be understood that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0050] In the description of the embodiments of the present invention, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A peep window for a radioactive source production hot room, characterized in that: include: A middle frame (100) having a glass installation area therein; A first lead glass (210) is detachably fixedly mounted in a protective frame (220), wherein the protective frame (220) and the first lead glass (210) form a glass assembly (200), wherein the glass assembly (200) is mounted in the glass installation area, and the glass assemblies (200) are multiple groups, wherein the multiple groups of glass assemblies (200) overlap in the glass installation area, and the protective frames (220) of adjacent glass assemblies (200) are attached to each other; The indoor side pressure ring (300) and the outdoor side pressure assembly (400) are respectively detachably fixedly connected to the two ends of the middle frame (100); a plurality of groups of glass assemblies (200) are pressed by the indoor side pressure ring (300) and the outdoor side pressure assembly (400); and the indoor side pressure ring (300) and the outdoor side pressure assembly (400) are respectively in contact with the corresponding protective frame (220).

2. The radioactive source production hot room peep window according to claim 1, characterized in that: The protection frame (220) comprises: An annular frame (221), one end of which is provided with a first protruding ring (2211) coaxial therewith, wherein the first protruding ring (2211) protrudes from the inner ring wall of the annular frame (221); A pressing ring (222), the inner ring wall of which is provided with a second protruding ring (2221) coaxial therewith, the pressing ring (222) is detachably fixedly connected to the other end of the annular frame (221), the first protruding ring (2211) and the second protruding ring (2221) are respectively connected to the two end edges of the first lead glass (210) to clamp the first lead glass (210) between the first protruding ring (2211) and the second protruding ring (2221).

3. The radioactive source production hot room peep window according to claim 2, characterized in that: The edges at both ends of the first lead glass (210) are both provided with chamfers (211), the first convex ring (2211) and the second convex ring (2221) are both provided with inclined surfaces (223) adapted to the chamfers (211), the inclined surfaces (223) cooperate with the chamfers (211), and a first sealing ring (230) is padded between the mutually cooperating inclined surfaces (223) and the chamfers (211), and the first sealing ring (230) surrounds the first lead glass (210).

4. The radioactive source production hot room peep window according to claim 2, characterized in that: The pressing ring (222) is bolted to the other end of the annular frame (221) via a first bolt (224), so that the pressing ring (222) and the annular frame (221) are detachably fixedly connected together.

5. The radioactive source production hot room peep window according to claim 1, characterized in that: The distance between the end surface of the protection frame (220) and the surface of the first lead glass (210) is 0.25 mm, so that the distance between two adjacent pieces of the first lead glass (210) is 0.5 mm.

6. The radioactive source production hot room peep window according to any one of claims 1 to 5, characterized in that: Also includes: A second sealing ring (310) is cushioned between the indoor inner pressure ring (300) and the corresponding protection frame (220); A third sealing ring (410) cushioned between the outdoor side pressing assembly (400) and the corresponding protection frame (220); The second sealing ring (310) and the third sealing ring (410) surround the corresponding first lead glass (210).

7. The radioactive source production hot room viewing window according to claim 6, characterized in that: The indoor inner pressure ring (300) is bolted to one end of the middle frame (100) by a second bolt (320), so that the indoor inner pressure ring (300) and the middle frame (100) are detachably fixedly connected together, and a fourth sealing ring (330) is installed between the indoor inner pressure ring (300) and the middle frame (100); The outdoor side clamping assembly (400) is bolted to the other end of the middle frame (100) by a third bolt (420), so that the outdoor side clamping assembly (400) and the middle frame (100) are detachably fixedly connected together, and a fifth sealing ring (430) is installed between the outdoor side clamping assembly (400) and the middle frame (100); The fourth sealing ring (330) and the fifth sealing ring (430) surround the glass component (200).

8. The radioactive source production hot room viewing window according to claim 7, characterized in that: The outdoor side pressing assembly (400) comprises: The plate body (440) is bolted and fixed to the middle frame (100) by means of the third bolt (420); the fifth sealing ring (430) is cushioned between the plate body (440) and the middle frame (100); and a mounting groove is provided on the plate body (440); The tempered glass (450) is accommodated in the installation groove, the third sealing ring (410) is installed between the tempered glass (450) and the corresponding protection frame (220), and the sixth sealing ring (460) is also installed between the tempered glass (450) and the groove wall of the installation groove.

9. The radioactive source production hot room viewing window according to claim 1, characterized in that: The number of the glass assemblies (200) is six groups, and, from the indoor side to the outdoor side, the first lead glass models (210) of the six groups of glass assemblies (200) are K709, ZF501, ZF501, ZF6, ZF6, and ZF6, respectively.

10. The radioactive source production hot room viewing window according to claim 9, characterized in that: The wall of the hot chamber includes a cast iron screen (500), the cast iron screen (500) is provided with a window, and the middle frame (100) is mounted on the window; The radioactive source production hot room peep window also includes an inner frame component (600), which is installed on the cast iron screen (500) and blocks the window from the indoor side. The inner frame component (600) is configured with a second lead glass (610) that facilitates perspective, and the model of the second lead glass (610) is K709.

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