CN214752972U

CN214752972U - Radiation source containing shielding device

Info

Publication number: CN214752972U
Application number: CN202023306433.XU
Authority: CN
Inventors: 萧于泱; 张续亮; 张陵; 陈皞; 刘辉
Original assignee: Jiangsu Nuclear Power Corp
Current assignee: Jiangsu Nuclear Power Corp
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-16
Anticipated expiration: 2030-12-31

Abstract

The utility model belongs to the technical field of nuclear power station radiation protection, concretely relates to radiation source contains shield assembly, include: the device comprises a bolt A, an upper cover, a base, a bottom plate, a built-in ring and a bolt B; the upper surface of the bottom plate is welded with a base; the upper cover is connected with the base through a bolt A; the built-in ring is arranged inside the base through a bolt B. The utility model discloses a stainless steel material replaces original lead material, replaces the shield assembly of V class radiation source with the exemption source in the radiation source classification, has replaced original radiation source and has contained shield assembly, has optimized the field management demand.

Description

Radiation source containing shielding device

Technical Field

The utility model belongs to the technical field of nuclear power station radiation protection, concretely relates to radiation source contains shield assembly.

Background

Before a portable radiation monitoring instrument of a certain nuclear power station is lent, a radiation protection person in a duty room directly exposes the active part of a radiation source to the air by opening the upper cover of the device, and simultaneously places the portable radiation monitoring instrument on a monitor for qualitatively testing the reliability and stability of the fluctuation of the value of the instrument.

The existing nuclear power station radiation source storage device is processed by adopting a lead material, a built-in radiation source is a V-type radiation source, the purchasing work of the radiation source (radiation source) is restricted by corresponding national laws and regulations, the time period is long, the flow links are more, the lead material is not common in general machining workshops, and the situation that the lead material is difficult to replace can occur if the problem of part loss occurs.

It is therefore desirable to address the above-mentioned problems and to devise a radiation source containment barrier that ameliorates the above-mentioned deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a radiation source and containing shield assembly for effectively solve prior art radiation source and contain shield assembly upper cover and base bearing and rotate the technical problem that vulnerable, built-in ring undetachable, the limited management and control of radiation source classification have.

The technical scheme of the utility model:

a radiation source containment shield comprising: the device comprises a bolt A, an upper cover, a base, a bottom plate, a built-in ring and a bolt B; the upper surface of the bottom plate is welded with a base; the upper cover is connected with the base through a bolt A; the built-in ring is arranged inside the base through a bolt B.

The upper cover includes: the upper cover comprises an upper cover handle, a concave platform A, a through hole and an upper cover body; the upper cover body is of a cylindrical structure, and the upper cover handle is fixedly arranged on the circumferential side surface of the upper cover body; the upper surface of the upper cover body is provided with a through hole; and a concave platform A is arranged in the through hole.

The base includes: a plurality of bolt holes B, concave platforms B, bolt holes A and concave platforms C; the base is integrally of a cylindrical structure, and a bolt hole A is formed in the upper surface of the base; the opening position of the bolt hole A is correspondingly consistent with the opening position of the through hole; a concave station B is arranged at the circle center position of the upper surface of the base, a concave station C is arranged at the concentric position inside the concave station B, and the diameter of the concave station C is smaller than that of the concave station B; and a plurality of bolt holes B are uniformly distributed on the circumferential surface of the concave platform B.

The built-in ring includes: the center of the built-in ring is provided with a center through hole; the circumferential surface of the built-in ring is provided with a plurality of chamfer through holes; the chamfering angle of the chamfering through hole is 45 degrees;

the built-in circular ring is placed in the concave station B and fixed in the base through a bolt B, and the diameter of a central through hole of the built-in circular ring is smaller than that of the concave station C.

A radiation source is placed in the concave station C; a plurality of mounting holes are uniformly formed in the surface of the bottom plate; the central position of the base is overlapped with the central position of the bottom plate.

The outer surface of the lower portion of the bolt A is provided with external threads, the outer surface of the upper portion of the bolt A is a smooth surface, the lower portion of the bolt A is arranged inside the bolt hole A in the base, and the smooth surface of the upper portion of the bolt A is arranged in the through hole of the upper cover.

The utility model discloses technological effect:

the utility model discloses a radiation source contains shield assembly adopts stainless steel material to replace original lead material, replaces the shield assembly of V class radiation source with the exemption source in the radiation source classification, has been applied to certain nuclear power station 3-6 units radiation protection on duty room respectively. Simultaneously for eliminating the restraint of first-stage engineering radiation protection on-duty room on its class V radioactive source uses the management and control, the utility model discloses original radiation source has further been replaced and shielding device has been contained, the field management demand has been optimized.

(1) The built-in ring of the containing shielding device of the utility model can be disassembled, which is convenient for the radiation source to be replaced when the radioactive decay is unavailable, and the original device is a fixed structure and can not be disassembled;

(2) the shielding device of the utility model can be popularized and applied to the design and manufacture of other shielding tools in the radiation protection external irradiation field;

(3) the lead material is replaced by the stainless steel material, so that the overall dimension of the upper cover of the shielding device is reasonably designed, the generation of non-practical parts is reduced, the weight of the shielding device is optimized, and the field installation can be better carried out;

(4) the rotation axis adopts bolted connection, has played rotation, support simultaneously, has connected the function of three, if produce wearing and tearing or damage in the use, can be easily changed, and the bearing that goes on between original shield assembly upper cover and the base rotates to be connected, if damage needs the whole change, and the cost is higher.

(5) Original shield assembly uses V type radiation source, belongs to radiation source classification system, receives more strict management and control from the national law and regulation aspect, the utility model discloses an exempt from the source, easily management on the system of degree.

(6) The device utilizes the gravity relation, the upper cover of the shielding device is in a closed state continuously when being used by no person, and the configuration of the supporting piece at the base position is reduced compared with the closing mode of the original device, so that the device is more concise and practical.

Drawings

Fig. 1 is a schematic structural view of a radiation source containing shielding device designed by the present invention;

FIG. 2 is a cross-sectional view of a radiation source containing shielding device designed by the present invention

FIG. 3 is a cross-sectional view of the upper cover of the radiation source containment shield of the present invention;

FIG. 4 is a cross-sectional view of the base of the radiation source containment shield of the present invention;

FIG. 5 is a top view of the built-in ring of the radiation source containing shielding device of the present invention;

FIG. 6 is a cross-sectional view of the built-in ring of the radiation source containing shielding device of the present invention

Wherein: 1-bolt A, 2-upper cover, 3-base, 4-bottom plate, 5-built-in ring, 6-bolt B, 401-mounting hole, 201-upper cover handle, 202-concave platform A, 203-through hole, 204-upper cover body, 301-bolt hole B, 302-concave platform B, 303-bolt hole A, 304-concave platform C, 501-central through hole, 502-chamfer through hole

Detailed Description

The following description of the present invention will be provided in conjunction with the accompanying drawings and the detailed description of the embodiments,

a radiation source containment shield comprising: bolt A1, upper cover 2, base 3, bottom plate 4, built-in ring 5 and bolt B6; the base 3 is welded on the upper surface of the bottom plate 4; the upper cover 2 and the base 3 are connected through a bolt A1; the built-in ring 5 is arranged inside the base 3 by means of a bolt B6.

The upper cover 2 includes: an upper cover handle 201, a concave platform A202, a through hole 203 and an upper cover body 204; the upper cover body 204 is of a cylindrical structure, and the upper cover handle 201 is fixedly arranged on the circumferential side surface of the upper cover body 204; the upper surface of the upper cover body 204 is provided with a through hole 203; the through hole 203 is internally provided with a concave A202.

The base 3 includes: a plurality of bolt holes B301, recessed platforms B302, bolt holes A303 and recessed platforms C304; the whole base 3 is of a cylindrical structure, and a bolt hole A303 is formed in the upper surface of the base 3; the opening position of the bolt hole A303 is correspondingly consistent with the opening position of the through hole 203; a concave station B302 is arranged at the position of the center of a circle on the upper surface of the base 3, a concave station C304 is arranged at the concentric position inside the concave station B302, and the diameter of the concave station C304 is smaller than that of the concave station B302; and a plurality of bolt holes B301 are uniformly distributed on the circumferential surface of the concave platform B302.

The built-in ring 5 includes: a central through hole 501 and a chamfer through hole 502, wherein the central through hole 501 is formed in the center position of the built-in ring 5; the circumferential surface of the built-in ring 5 is provided with a plurality of chamfer through holes 502; the chamfer angle of the chamfer through hole 502 is 45 degrees; the chamfered through hole 502 is used to receive the nut portion of the bolt B6.

A radiation source is placed in the concave platform C304; the built-in ring 5 is placed in the concave platform B302 and fixed in the base 3 through a bolt B6, and the diameter of a central through hole 501 of the built-in ring 5 is smaller than that of the concave platform C304, so that the radiation source in the concave platform C304 is prevented from falling out.

A plurality of mounting holes 401 are uniformly formed in the surface of the bottom plate 4; the central position of the base 3 is overlapped with the central position of the bottom plate 4.

The outer surface of the lower part of the bolt A1 is provided with external threads, the outer surface of the upper part of the bolt A1 is a smooth surface, and the lower part of the bolt A1 is arranged inside the bolt hole A303 in the base 3; the center of the bolt hole A1 is overlapped with the central axis of the adjacent mounting hole 401; the upper smooth surface of said bolt a1 is arranged in the through hole 203 of the upper cover 2. The smooth section of the outer surface of the middle upper part of the bolt A1 is used for realizing the horizontal rotation function between the upper cover 2 and the base 3 and enabling the upper cover 2 and the base 3 to be tightly attached.

The device can be fixed on a vertical wall surface or a horizontal plane for use through the mounting hole 401 of the bottom plate 4.

A method of containing shielding a radiation source containing shielding device as described above, comprising the steps of:

the method comprises the following steps: rotating the upper cover handle 201 to separate the upper cover body 204 from the base 3, so that the radiation source is exposed to the air through the central through hole 501;

step two: contacting a portable radiation monitoring instrument to be detected with a ray irradiation area of an active part of a radiation source at the central position of a base 3, so that the head reference point of the portable radiation monitoring instrument is opposite to the radiation source;

and step three, if the portable radiation monitoring instrument responds in the radiation source ray irradiation area, the operation is finished, and the upper cover 2 and the base 3 are overlapped and reset.

The present invention has been described in detail with reference to the accompanying drawings and examples, but the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.

Claims

1. A radiation source containment shield comprising: the device comprises a bolt A (1), an upper cover (2), a base (3), a bottom plate (4), a built-in ring (5) and a bolt B (6); the upper surface of the bottom plate (4) is welded with a base (3); the upper cover (2) is connected with the base (3) through a bolt A (1); the built-in ring (5) is arranged inside the base (3) through a bolt B (6).

2. A radiation source containment shield as claimed in claim 1, wherein: the upper cover (2) includes: an upper cover handle (201), a concave platform A (202), a through hole (203) and an upper cover body (204); the upper cover body (204) is of a cylindrical structure, and the upper cover handle (201) is fixedly arranged on the circumferential side surface of the upper cover body (204); a through hole (203) is formed in the upper surface of the upper cover body (204); a concave platform A (202) is arranged in the through hole (203).

3. A radiation source containment shield as claimed in claim 2, wherein:

the base (3) comprises: a plurality of bolt holes B (301), recessed platforms B (302), bolt holes A (303) and recessed platforms C (304); the base (3) is integrally of a cylindrical structure, and the upper surface of the base (3) is provided with a bolt hole A (303); the opening position of the bolt hole A (303) is consistent with the opening position of the through hole (203); a concave station B (302) is arranged at the circle center position of the upper surface of the base (3), a concave station C (304) is arranged at the concentric position inside the concave station B (302), and the diameter of the concave station C (304) is smaller than that of the concave station B (302); and a plurality of bolt holes B (301) are uniformly distributed on the circumferential surface of the concave platform B (302).

4. A radiation source containment shield as claimed in claim 3, wherein:

the built-in ring (5) comprises: the center through hole (501) and the chamfer through hole (502) are formed in the center position of the built-in circular ring (5); the circumferential surface of the built-in ring (5) is provided with a plurality of chamfer through holes (502); the chamfer angle of the chamfer through hole (502) is 45 degrees.

5. A radiation source containment shield as claimed in claim 4, wherein:

the built-in ring (5) is placed in the concave platform B (302) and fixed in the base (3) through a bolt B (6), and the diameter of a central through hole (501) of the built-in ring (5) is smaller than that of the concave platform C (304).

6. A radiation source containment shield as claimed in claim 5, wherein: a radiation source is placed in the concave platform C (304); a plurality of mounting holes (401) are uniformly formed in the surface of the bottom plate (4); the central position of the base (3) is overlapped with the central position of the bottom plate (4).

7. A radiation source containment shield as claimed in claim 6, wherein:

the outer surface of the lower portion of the bolt A (1) is provided with external threads, the outer surface of the upper portion of the bolt A (1) is a smooth surface, the lower portion of the bolt A (1) is arranged in the bolt hole A (303) in the base (3), and the smooth surface of the upper portion of the bolt A (1) is arranged in the through hole (203) of the upper cover (2).