A new type of 170L compressed steel drum for low- and medium-level radioactive waste

Abstract

The present invention discloses a novel 170L low- to medium-level radioactive waste compression steel barrel, comprising a barrel body and a barrel cover buckled on the barrel body, two or more annular ribs are arranged on the side wall of the barrel body, and an annular central protrusion and two or more linear protrusions extending outward from the annular central protrusion are arranged on the barrel bottom. The novel 170L low- to medium-level radioactive waste compression steel barrel disclosed by the present invention does not need to be perforated in the compression barrel during the overpressure process, and can achieve complete containment of the waste, and is suitable for overpressure treatment of general low- to medium-level radioactive solid waste, such as incineration ash, steel, salt slag, cement solidification, etc.

Description

Technical Field

[0001] The invention relates to the field of radioactive waste management, and in particular to a new type of 170L compressed steel barrel for low- to medium-level radioactive waste in the field. Background Art

[0002] Low- to medium-range radioactive dry waste is one of the main wastes generated by the operation of nuclear power plants or other nuclear facilities. The storage, transportation and disposal of these wastes require a lot of manpower, material and financial resources, and large storage and disposal sites must be prepared. In order to save storage and disposal space and transportation and disposal costs, they must be reduced in volume before disposal. Abroad, super compression of radioactive solid waste has been widely used in nuclear power plants, nuclear research centers and nuclear fuel cycle facilities. Super compression is based on increasing the density of waste, eliminating voids in the waste and reducing the volume. It is a relatively mature technology and is widely used.

[0003] At present, the compression barrels used in radioactive waste overpressure facilities have the following problems in the actual compression process that need to be improved:

[0004] 1) During the overpressure process, it is necessary to drill holes at the bottom of the waste barrel to release a small amount of liquid deposited in the barrel, and to relieve the pressure in the barrel during the compression process to avoid the compression barrel from exploding.

[0005] 2) During the overpressure process, parts of the waste barrel surface are still crushed, posing a risk of radioactive leakage. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a new type of 170L compressed steel drum for low- and medium-level radioactive waste.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A new type of 170L compressed steel drum for low- and medium-level radioactive waste includes a drum body and a drum cover buckled on the drum body. The improvement thereof lies in that: more than two annular ribs are arranged on the side wall of the drum body, and an annular center protrusion and more than two straight line protrusions extending outward from the annular center protrusion are arranged on the bottom of the drum.

[0009] Furthermore, the barrel cover has an inwardly turned chamfer, and the inner diameter of the barrel cover is smaller than the outer diameter of the barrel mouth on the barrel body.

[0010] Furthermore, the annular ribs are divided into three groups on the side wall of the barrel body, with three ribs in each group.

[0011] Furthermore, there are six linear protrusions, and the six linear protrusions are evenly spaced along the circumference of the annular central protrusion.

[0012] Furthermore, the capacity of the compression barrel is 170L.

[0013] The beneficial effects of the present invention are:

[0014] The new 170L low- and medium-level radioactive waste compression steel barrel disclosed in the present invention does not need to be perforated in the compression barrel during the overpressure process, and can achieve complete containment of the waste. It is suitable for overpressure treatment of general low- and medium-level radioactive solid waste, such as incineration ash, steel, salt slag, cement solids, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a new type of 170L low- to medium-level radioactive waste compression steel drum disclosed in Example 1 of the present invention;

[0016] Figure 2 It is a schematic structural diagram of the bottom portion of a new type of 170L low- and medium-level radioactive waste compression steel barrel disclosed in Example 1 of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] Embodiment 1, as Figure 1 As shown, this embodiment discloses a new type of 170L low- to medium-level radioactive waste compression steel drum (referred to as compression drum), comprising a drum body 1 and a drum cover 2 buckled on the drum body, two or more annular ribs 3 are arranged on the side wall of the drum body, and an annular central protrusion 5 and two or more linear protrusions 6 extending outward from the annular central protrusion are arranged on the drum bottom 4. The liquid accumulation groove inside the annular central protrusion and the liquid accumulation grooves between the linear protrusions can retain a small amount of liquid deposited in the drum during the compression process.

[0019] In this embodiment, the barrel cover has an inward chamfer, and the barrel cover is not sealed by bolts, but a special chamfer design is adopted. This type of compression barrel does not need to be punched before overpressure, and can release the gas in the barrel in time during the compression process to avoid "barrel explosion", thereby ensuring the integrity of the barrel body and 100% of the radioactive waste is contained in the container during the compression process. The inner diameter of the barrel cover is smaller than the outer diameter of the barrel mouth on the barrel body, so that there is a certain pressure between the barrel cover and the barrel body.

[0020] The annular ribs are divided into three groups on the side wall of the barrel body, with three ribs in each group, so that the compression barrel is easy to compress and the barrel body is not broken during the overpressure process to the greatest extent, thereby controlling the contamination of the overpressure system by radioactive waste.

[0021] In this embodiment, there are six linear protrusions, and the six linear protrusions are evenly spaced along the circumference of the annular central protrusion.

[0022] The capacity of the compressed steel drum is 170L.

[0023] After the compressed steel drum disclosed in this embodiment is compressed in the overpressure system, the compressed steel drum becomes a compressed cake, and the drum cover and the drum body are compressed and deformed to achieve a dead seal.

Claims

1. A new type of 170L low- to medium-level radioactive waste compressed steel drum, comprising a drum body and a drum cover buckled on the drum body, characterized in that: More than two annular ribs are arranged on the side wall of the barrel body, and an annular center protrusion and more than two straight line protrusions extending outward from the annular center protrusion are arranged on the barrel bottom; the barrel cover has an inward-turned chamfer, and the inner diameter of the barrel cover is smaller than the outer diameter of the barrel mouth on the barrel body; the annular ribs are divided into three groups on the side wall of the barrel body, with three ribs in each group; there are six straight line protrusions, and the six straight line protrusions are evenly spaced along the circumference of the annular center protrusion; the capacity of the compressed steel barrel is 170L.

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