Isolation conveying device for material radioactivity detection

Abstract

The utility model provides a material radioactivity detection isolation conveying device, and relates to the technical field of radioactivity detection, the material radioactivity detection isolation conveying device comprises a head frame and a conveying frame, the conveying frame and the head frame are arranged in a front-back free combination butt joint mode, and a transfer belt is arranged between each head frame and each conveying frame in a penetrating mode. The conveying frame is packaged through an inner sealing concrete layer, and a conveying table is arranged among the headstock, the conveying frame and the transfer belt in a penetrating mode. An isolation cover is fixed in the transfer belt; the utility model has the beneficial effects that the head frame and the conveying frame which are arranged in a combined manner are adopted to form an isolation conveying channel of the radioactive material to be detected, and the front and rear conveying frame spaces are isolated by utilizing the transfer belt in a manner of matching with a two-by-two butt joint arrangement mode; the device structure can be matched with radioactivity detection equipment to carry out line-following arrangement of an inlet and an outlet, on the basis, the isolation performance of the conveying channel is guaranteed, and the applicability and practicability of the conveying device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactive detection, in particular to a material radioactive detection isolation and conveying device. Background Art

[0002] For radioactive waste generated by nuclear power plants, appropriate disposal methods are selected based on their type and characteristics, and multiple barrier measures, combining natural and engineered barriers, are adopted to isolate them from the human environment and slow their entry into the human environment, thereby effectively reducing hazards to humans and the environment and achieving long-term safety.

[0003] For low- and intermediate-level radioactive solid waste disposed near the surface, most of the radionuclides they contain have short half-lives and can decay to radiologically insignificant levels within decades to centuries. Both engineered and natural barriers can serve as isolation mechanisms, with engineered barriers being the primary approach. After solidification and packaging, these low- and intermediate-level radioactive wastes are transported to low- and intermediate-level radioactive waste disposal sites and placed in concrete units with treated bottoms that provide load-bearing, anti-seepage, water collection, and radionuclide adsorption. Radioactivity testing is required to determine the radioactivity of low- and intermediate-level treated materials and waste. Existing radioactivity testing methods, such as gamma spectrometers and manual containment testing, require on-site inspection of materials, making it difficult to conduct through-the-line testing in conjunction with transportation methods. This limits the application of traditional transportation methods to these testing methods. Utility Model Content

[0004] In view of the above technical problems existing in the prior art, a material radioactivity detection isolation and conveying device is provided.

[0005] The purpose and effect of this utility model are achieved by the following specific technical means:

[0006] A material radioactivity detection isolation conveying device includes a head frame and a conveying frame, wherein the conveying frame and the head frame are arranged in a front-to-back free combination and docking manner, a transfer belt is provided between each of the head frame and the conveying frame, the conveying frame is encapsulated by an inner sealing concrete layer, and a transfer platform is provided between the head frame, the conveying frame and the transfer belt;

[0007] An isolation cover is fixed in the transfer belt, the isolation cover and the transfer belt are isolated by concrete filling, and an inner isolation is formed between the isolation cover and the conveying platform;

[0008] A laminar flow hood is embedded on the isolation hood, a plurality of air valve pipe heads are externally connected to the laminar flow hood, and a branch air pipe is connected between the air valve pipe head and the laminar flow hood.

[0009] Further, the head frame and the conveying table connecting end are formed with a cover bin, and the cover bin is outwardly extended with a baffle frame on both sides.

[0010] Further, a plurality of step surfaces are formed between the cover bin and the conveying table.

[0011] Further, the conveying table is a radiation-proof rubber belt conveying table.

[0012] Further, the isolation cover is a door type opening structure, and a straight flow type window is formed between the isolation cover and the inner isolation.

[0013] Further, a conveying window frame is arranged outside the isolation cover and the cover bin, and the inner edge of the conveying window frame is tightly matched with the conveying table.

[0014] Further, an adapter bin is arranged between the isolation cover and the conveying frame, and the adapter bin and the isolation cover connecting end are sealed by a penetration-proof radiation material.

[0015] Further, a circulating valve port pipe is arranged between the laminar flow cover and the isolation cover, and the circulating valve port pipe is emptied by an external air valve.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The radioactive material detection and isolation conveying device adopts the combined arrangement of the head frame and the conveying frame to form an isolation conveying channel of the radioactive material to be detected, utilizes the intermediate transfer belt arranged in a two-by-two docking mode to isolate the space of the front and rear conveying frames, so that the device structure can be matched with the radioactive detection equipment to arrange the inlet and outlet of one place along the line, and the isolation performance of the conveying channel is ensured on the basis, and the applicability and practicality of the conveying device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is an internal plane structure schematic view of the utility model;

[0020] Figure 3 It is an internal plane structure schematic view of the cover bin of the utility model.

[0021] Marked in the figure: 1-head frame; 2-conveying frame; 3-intermediate transfer belt; 4-air valve pipe head; 5-cover bin; 6-baffle frame; 7-conveying table; 8-isolation cover; 9-conveying window frame; 10-adapter bin; 11-laminar flow cover; 12-branch air pipe; 13-circulating valve port pipe; 14-inner isolation. DETAILED DESCRIPTION

[0022] Please refer to Figure 1-3, further illustrate the embodiments of the present utility model;

[0023] A material radioactivity detection isolation conveying device includes a head frame 1 and a conveying frame 2. The conveying frame 2 and the head frame 1 are arranged in a front-to-back free combination and docking manner. A transfer belt 3 is provided between each head frame 1 and the conveying frame 2. The conveying frame 2 is encapsulated by an inner sealing concrete layer. A conveying platform 7 is provided between the head frame 1, the conveying frame 2 and the transfer belt 3.

[0024] An isolation cover 8 is fixed in the transfer belt 3. The isolation cover 8 and the transfer belt 3 are separated by concrete filling. An inner isolation 14 is formed between the isolation cover 8 and the conveying platform 7.

[0025] A laminar flow hood 11 is embedded in the isolation hood 8 , a plurality of air valve pipe heads 4 are externally connected to the laminar flow hood 11 , and a branch air pipe 12 is connected between the air valve pipe head 4 and the laminar flow hood 11 .

[0026] The device carries multiple conveying channels by combining head frames 1 and conveying frames 2 in pairs, and uses the head frame 1 structure to internally isolate the conveying channels of the conveying frames 2 according to the length of the conveying frames 2. The device adopts the platform conveying method of the transmission table 7 as the conveying platform for the material to be tested, and further completes the bridging matching of the combined structure by setting a transfer belt 3 between the head frame 1 and the conveying frame 2. The transfer belt 3 is used to isolate the inlet and outlet of the conveying frame 2, and the internal laminar isolation method is used to provide laminar airflow for the laminar flow hood 11 by using the external air valve pipe head 4 and the internal branch air pipe 12 to provide air pressure isolation at the inlet and outlet of the isolation cover 8, and cooperates with the external isolation structure formed between the isolation cover 8 and the internal isolation 14 to isolate and package the material conveying channel, thereby improving the safety of the device.

[0027] At the same time, taking into account the needs of radioactive detection, the device adopts a structure of a combined head frame 1 and a conveyor frame 2. The head frame 1 can be used to extend the inlet and outlet of the conveyor frame 2 in the direction of the pipeline, so that the detection equipment can be installed and arranged at the inlet and outlet of the head frame 1 to facilitate on-line detection work. At the same time, the isolation cover 8 structure in the transfer belt 3 is used to isolate the conveyor frame 2 inside and outside, which ensures that the conveying channel meets safety standards while meeting the detection needs of the detection equipment, thereby improving the applicability of the device.

[0028] Preferably, a cover bin 5 is formed at the connecting end of the head frame 1 and the conveying platform 7, and partition frames 6 extend outward on both sides of the cover bin 5, so that the cover bin 5 formed by the through-connection serves as a buffer channel in the conveying channel of the head frame 1 and the conveying platform 7, so as to provide a carrying space for the detection equipment, and cooperate with the partition frames 6 for clamping and fixing.

[0029] Preferably, a plurality of steps are formed between the cover bin 5 and the conveying table 7, and the step structure is arranged to be in contact with the outer end of the head frame 1 and the partition frame 6, so as to provide a sealing structure for the detection equipment, and to facilitate the subsequent sealing treatment of the penetration-resistant radiation material on the fixed end of the detection equipment.

[0030] Preferably, the conveying table 7 is a radiation-proof rubber belt conveying table, which is used to convey the material on the conveying table 7 by using the radiation-proof rubber material, and to avoid the influence of material radiation on the safety of the device.

[0031] Preferably, the isolation cover 8 is a door type opening structure, and a straight-through window is formed between the isolation cover 8 and the inner isolation 14. The door type structure can maximize the use of the inner and outer isolation of the isolation cover 8 to ensure the isolation performance of the conveying space of the conveying table 7, and the straight-through window is used for conveying.

[0032] Preferably, the conveying window frame 9 is arranged outside the isolation cover 8 and the cover bin 5, and the inner edge of the conveying window frame 9 is in close contact with the conveying table 7. The conveying bed frame 9 is used as the connecting piece between the isolation cover 8 and the cover bin 5, so as to perform inner sealing treatment on the conveying window between the cover bin 5 and the isolation cover 8, and to ensure the safety of the window structure of the isolation cover 8.

[0033] On the basis of the above, the adapter bin 10 is arranged between the isolation cover 8 and the conveying frame 2, and the connecting end of the adapter bin 10 is sealed by the penetration-resistant radiation material. The adapter bin 10 is used as the inner sealing structure of the conveying window of the isolation cover 8, so as to ensure the sealing performance between the isolation cover 8 and the inner space of the conveying frame 2.

[0034] Preferably, the circulation valve port pipe 13 is arranged between the laminar flow cover 11 and the isolation cover 8. The circulation valve port pipe 13 is arranged to be in contact with the air valve, and the window structure formed by the laminar flow cover 11 and the isolation cover 8 is arranged to be in contact with the air valve through the circulation valve port pipe 13. The laminar flow cover 11 is used to perform air exhaust treatment on the laminar flow air flow, and the isolation cover 8 is used to perform inner isolation on the air flow, so as to avoid the influence of the air flow on the material conveying in the conveying channel.

[0035] The implementation of the device is as follows:

[0036] The device is used to customize the conveying frame 2 with a corresponding conveying length according to the conveying requirements, and the head frame 1 is arranged at both ends of the conveying frame 2 by means of two-by-two combination. The adapter belt 3 is used as the isolation connecting structure between the conveying frame 2 and the head frame 1, so that the detection equipment can be arranged in one of the head frames 1 according to the requirements.

[0037] In conveying, the channel type conveying of the material is completed by the conveying table 7, the conveying frame 2 is connected with the head frame 1 at both ends, the air valve pipe head 4 is connected with the external air source, the blowing of the branch air pipe 12 and the laminar flow cover 11 is matched, the laminar flow is formed in the window of the isolation cover 8, the inlet and outlet channel openings of the conveying frame 2 are isolated by the laminar flow pressure, and the safety of the material conveying is ensured by matching the outer isolation structure of the conveying frame 2 and the isolation cover 8.

[0038] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A material radioactivity detection isolation and conveying device, characterized by: The invention comprises a head frame (1) and a conveying frame (2), wherein the conveying frame (2) and the head frame (1) are arranged in a front-to-back free combination and docking manner, a transfer belt (3) is provided between each of the head frame (1) and the conveying frame (2), the conveying frame (2) is encapsulated by an inner sealing concrete layer, and a conveying platform (7) is provided between the head frame (1), the conveying frame (2) and the transfer belt (3); An isolation cover (8) is fixed in the transfer belt (3), the isolation cover (8) and the transfer belt (3) are isolated by concrete filling, and an inner isolation (14) is formed between the isolation cover (8) and the conveying platform (7); A laminar flow hood (11) is embedded in the isolation hood (8), a plurality of air valve pipe heads (4) are externally connected to the laminar flow hood (11), and a branch air pipe (12) is connected between the air valve pipe heads (4) and the laminar flow hood (11).

2. The device for isolating and conveying radioactive materials according to claim 1, characterized in that: The connecting end of the head frame (1) and the conveying platform (7) is connected to form a cover bin (5), and partition frames (6) extend outwards from both sides of the cover bin (5).

3. The device for isolating and conveying radioactive materials according to claim 2, characterized in that: A plurality of steps are formed between the cover bin (5) and the conveying platform (7).

4. The device for isolating and conveying radioactive materials according to claim 1, characterized in that: The conveying platform (7) is a belt-type conveying platform made of radiation-proof rubber.

5. The device for isolating and conveying radioactive materials according to claim 1, characterized in that: The isolation cover (8) is a door-type opening structure, and a direct-flow window is formed between the isolation cover (8) and the inner isolation (14).

6. The device for isolating and conveying radioactive materials according to claim 2, characterized in that: A conveying window frame (9) is provided between the isolation cover (8) and the cover bin (5) so as to surround the outside thereof, and the inner edge of the conveying window frame (9) is tightly matched with the conveying platform (7).

7. The device for isolating and conveying radioactive materials according to claim 1, characterized in that: A transfer bin (10) is provided between the isolation cover (8) and the conveying frame (2), and the connection end between the transfer bin (10) and the isolation cover (8) is sealed by an anti-penetrating radiation material.

8. The device for isolating and conveying radioactive materials according to claim 1, characterized in that: A circulation valve port pipe (13) is provided between the laminar flow hood (11) and the isolation hood (8), and the circulation valve port pipe (13) is emptied through an external air valve.

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