Special calibration support for radiation monitoring detector of nuclear power plant

Abstract

The utility model discloses a special calibration support for a radiation monitoring detector of a nuclear power plant, which comprises a supporting rod, a front supporting ring, a rear supporting ring and a perfect circle sleeve, the supporting rod is sleeved with a lower lantern ring, an upper lantern ring and a middle lantern ring, the upper lantern ring is positioned above the lower lantern ring, and the middle lantern ring is positioned between the lower lantern ring and the upper lantern ring; three supporting legs are rotatably arranged on the periphery of the middle lantern ring, the three supporting legs are arranged on the periphery of the middle lantern ring at equal intervals in a surrounding mode, and a top plate is arranged at the upper end of the supporting rod. According to the utility model, the semi-circular sheet or the perfect wafer for installing the radioactive source is arranged among the three connecting rods, and the semi-circular sheet or the perfect wafer can move back and forth among the three connecting rods, so that the distance between the semi-circular sheet or the perfect wafer for installing the radioactive source and the head of the radiation monitoring detector can be adjusted; the radiation monitoring detector is relatively stable in the working process, and front and back calibration and fine tuning are also relatively convenient by moving the semicircular sheet or the perfect wafer.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant radiation monitoring technical field, concretely is a kind of special calibration support for nuclear power plant radiation monitoring probe. BACKGROUND

[0002] Nuclear power plant refers to the nuclear energy conversion for heat energy, to generate steam for steam turbine, steam turbine drives generator, constitutes the power plant of commercial power generation;In the daily operation process of nuclear power plant, because the fuel of nuclear element is used, a large amount of nuclear radiation is generated in the process of production, if the intensity of nuclear radiation exceeds the standard of safe production, it can cause great harm to the body of on-site staff, needs to use radiation monitoring probe to monitor, radiation monitoring probe is used to monitor the environmental dose or radiation intensity around certain room, pipeline or specific equipment;In order to ensure the accuracy of radiation monitoring, monitoring probe is usually fixed in specific position, and keeps stable, to monitor for a long time.Radiation monitoring probe as a kind of monitoring instrument, needs to be calibrated regularly by using radioactive source, and the relative position of radioactive source and probe when calibration can affect calibration result, so it is necessary to ensure that the installation position of radioactive source is basically fixed each time calibration is carried out.

[0003] In view of the above situation, the utility model provides. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a special calibration support for nuclear power plant radiation monitoring probe, to solve the problems mentioned in the background art, and to basically fix the position of radioactive source.

[0005] To solve the above technical problems, the utility model provides the following technical scheme.

[0006] The utility model provides a special calibration support for nuclear power plant radiation monitoring probe, which comprises a supporting rod, a front supporting ring, a rear supporting ring and a right circular sleeve, a lower sleeve ring, an upper sleeve ring and an intermediate sleeve ring are sleeved on the supporting rod, the upper sleeve ring is located above the lower sleeve ring, and the intermediate sleeve ring is located between the lower sleeve ring and the upper sleeve ring.

[0007] Three legs are rotatably arranged around the intermediate sleeve ring, the three legs are arranged around the intermediate sleeve ring in an equidistant ring shape, and the upper end of the supporting rod is provided with a top plate.

[0008] Two supporting blocks are symmetrically arranged on the upper surface of the top plate, the upper surface of the supporting block is provided with a circular-arc-shaped notch, the front supporting ring is placed in the notch of the front supporting block, and the rear supporting ring is placed in the notch of the rear supporting block.

[0009] Three connecting rods are uniformly and equidistantly arranged between the front supporting ring and the rear supporting ring, the right circular sleeve is located in the notch of the front supporting block, and one side of the right circular sleeve away from the front supporting ring is provided with a semicircular sleeve.

[0010] Preferably, the surface of the middle sleeve ring is uniformly and equidistantly provided with three rotating blocks in a surrounding distribution, the upper end of the supporting leg is rotationally connected with the rotating block through a rotating shaft, and the lower end of the supporting leg is located on the same horizontal plane.

[0011] Preferably, the side surface of the front supporting ring and the rear supporting ring is uniformly and equidistantly provided with three protrusions in a surrounding distribution, and the central part of the protrusion is provided with a through hole.

[0012] Preferably, the protrusion on the front supporting ring is aligned with the protrusion on the rear supporting ring, one end of the connecting rod is inserted into the protrusion of the front supporting ring, and the other end of the connecting rod is inserted into the protrusion of the rear supporting ring.

[0013] Preferably, the inner surface of the right circular sleeve, the inner surface of the semicircular sleeve and the inner surface of the front supporting ring are flush, and the upper surface of the semicircular sleeve is aligned with the horizontal diameter of the right circular sleeve.

[0014] Preferably, the two handle blocks are symmetrically arranged on the two sides of the upper sleeve ring.

[0015] Preferably, the lower surface of the right circular sleeve is fixedly installed in the notch of the front supporting block.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The lower sleeve ring, the upper sleeve ring and the middle sleeve ring can move up and down on the supporting rod, the distance between the middle sleeve ring and the bottom of the supporting leg can be adjusted, that is, the distance between the top plate and the bottom of the supporting leg can be adjusted, the upper sleeve ring and the lower sleeve ring play a clamping and fixing role on the middle sleeve ring,

[0018] The two supporting blocks play a supporting role on the front supporting ring and the rear supporting ring respectively, the three connecting rods connect the front supporting ring and the rear supporting ring as a whole, and the lower surfaces of the inner walls of the semicircular sleeve, the right circular sleeve, the front supporting ring and the rear supporting ring are flush, so that the radiation monitoring detector can be inserted into the semicircular sleeve and placed on the semicircular sleeve.

[0019] The semicircular sheet or the right circular sheet on which the radioactive source is installed is located between the three connecting rods, and the semicircular sheet or the right circular sheet can move forward and backward between the three connecting rods, so that the distance between the semicircular sheet or the right circular sheet on which the radioactive source is installed and the head of the radiation monitoring detector can be adjusted.

[0020] The radiation monitoring detector is relatively stable during operation, and front and rear calibration fine adjustment is relatively convenient by moving the half circular plate or the full circular plate, and the radiation monitoring detector can be popularized in nuclear power plant radiation monitoring. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole perspective view of the present application;

[0022] Figure 2 It is a perspective view of the top plate and the supporting block of the present application;

[0023] Figure 3 It is a perspective view of the upper sleeve ring and the lower sleeve ring of the present application;

[0024] Figure 4 It is a practical view of the present application.

[0025] In the figure: 1, supporting rod; 11, lower sleeve ring; 12, upper sleeve ring; 13, middle sleeve ring; 14, rotating block; 15, supporting leg; 16, handle block; 2, top plate; 21, supporting block; 22, notch; 3, front supporting ring; 31, rear supporting ring; 32, protruding block; 33, connecting rod; 34, full circular sleeve; 35, half circular sleeve; 4, radiation monitoring detector. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] As shown in Figures 1-3 A special calibration support for a nuclear power plant radiation monitoring detector, comprising a supporting rod 1, a front supporting ring 3, a rear supporting ring 31 and a full circular sleeve 34, a lower sleeve ring 11, an upper sleeve ring 12 and a middle sleeve ring 13 are sleeved on the supporting rod 1, the upper sleeve ring 12 is located above the lower sleeve ring 11, the middle sleeve ring 13 is located between the lower sleeve ring 11 and the upper sleeve ring 12, and the lower sleeve ring 11, the upper sleeve ring 12 and the middle sleeve ring 13 are all threadedly connected on the supporting rod 1;

[0029] Three supporting legs 15 are arranged around the intermediate collar 13, and the three supporting legs 15 are arranged at equal intervals around the intermediate collar 13. The supporting legs 15 support the entire device. The upper end of the supporting rod 1 is provided with a top plate 2.

[0030] The upper surface of the top plate 2 is symmetrically provided with two supporting blocks 21. The upper surface of the supporting block 21 is provided with a circular arc-shaped notch 22. The front supporting ring 3 is placed in the notch 22 of the front supporting block 21. The rear supporting ring 31 is placed in the notch 22 of the rear supporting block 21. The two supporting blocks 21 support the front supporting ring 3 and the rear supporting ring 31 respectively.

[0031] Three connecting rods 33 are arranged at equal intervals between the front supporting ring 3 and the rear supporting ring 31. The three connecting rods 33 connect the front supporting ring 3 and the rear supporting ring 31 into a whole. A circular sleeve 34 is located in the notch 22 of the front supporting block 21. The circular sleeve 34 is provided with a semicircular sleeve 35 on the side away from the front supporting ring 3. The radiation monitoring detector 4 can be placed in the semicircular sleeve 35.

[0032] Three rotating blocks 14 are arranged at equal intervals on the surface of the intermediate collar 13. The upper end of the supporting leg 15 is rotatably connected to the rotating block 14 through a rotating shaft. The lower end of the supporting leg 15 is located on the same horizontal plane.

[0033] Three protrusions 32 are arranged at equal intervals on the side surface of the front supporting ring 3 and the rear supporting ring 31. The central part of the protrusion 32 is provided with a through hole.

[0034] The protrusions 32 on the front supporting ring 3 are aligned with the protrusions 32 on the rear supporting ring 31. One end of the connecting rod 33 is inserted into the through hole of the protrusion 32 of the front supporting ring 3, and the other end is inserted into the through hole of the protrusion 32 of the rear supporting ring 31.

[0035] The inner surface of the circular sleeve 34 and the inner surface of the semicircular sleeve 35 are flush with the inner surface of the front supporting ring 3. The upper surface of the semicircular sleeve 35 is aligned with the horizontal diameter of the circular sleeve 34.

[0036] Two handle blocks 16 are symmetrically arranged on the two sides of the upper collar 12. Holding the handle block 16 can twist the upper collar 12.

[0037] The lower surface of the circular sleeve 34 is fixedly installed in the notch 22 of the front supporting block 21.

[0038] In summary: the lower collar 11, the upper collar 12 and the intermediate collar 13 can move up and down on the supporting rod 1. The distance between the intermediate collar 13 and the bottom of the supporting leg 15 can be adjusted, that is, the distance between the top plate 2 and the bottom of the supporting leg 15 can be adjusted. The upper collar 11 and the lower collar 12 clamp and fix the intermediate collar 13.

[0039] The two supporting blocks 21 support the front supporting ring 3 and the rear supporting ring 31 respectively, the three connecting rods 33 connect the front supporting ring 3 and the rear supporting ring 31 as a whole, and the lower surfaces of the inner walls of the semicircular sleeve 35, the circular sleeve 34, the front supporting ring 3 and the rear supporting ring 31 are flush, so that the radiation monitoring detector 4 can be inserted from the semicircular sleeve 35 and placed on the semicircular sleeve 35;

[0040] The semicircular sheet or the circular sheet on which the radioactive source is mounted is located between the three connecting rods 33, and the semicircular sheet or the circular sheet can move forward and backward between the three connecting rods 33, so that the distance between the semicircular sheet or the circular sheet on which the radioactive source is mounted and the head of the radiation monitoring detector 4 can be adjusted;

[0041] During the working process of the radiation monitoring detector 4, it is relatively stable, and it is also relatively convenient to calibrate and fine-tune forward and backward by moving the semicircular sheet or the circular sheet, and it can be popularized and used in the radiation monitoring of nuclear power plants.

[0042] The above is only the preferred specific implementation method of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dedicated calibration stand for a nuclear power plant radiation monitoring probe, characterized by: It includes support rod (1), front support ring (3), rear support ring (31) and positive circular sleeve (34), the support rod (1) is sleeved with lower sleeve ring (11), upper sleeve ring (12) and intermediate sleeve ring (13), the upper sleeve ring (12) is located above the lower sleeve ring (11), the intermediate sleeve ring (13) is located between the lower sleeve ring (11) and the upper sleeve ring (12); Three supporting legs (15) are rotationally arranged around the intermediate sleeve ring (13), the three supporting legs (15) are arranged in equidistant circumferential shape around the intermediate sleeve ring (13), and the upper end of the support rod (1) is provided with a top plate (2); The upper surface of the top plate (2) is symmetrically provided with two supporting blocks (21) in front and back, the upper surface of the supporting block (21) is provided with a circular arc notch (22), the front supporting ring (3) is placed in the notch (22) of the front supporting block (21), and the rear supporting ring (31) is placed in the notch (22) of the rear supporting block (21); Three connecting rods (33) are uniformly arranged at equal intervals between the front supporting ring (3) and the rear supporting ring (31), the positive circular sleeve (34) is located in the notch (22) of the front supporting block (21), and the side of the positive circular sleeve (34) away from the front supporting ring (3) is provided with a semicircular sleeve (35).

2. A calibration stand for a nuclear power plant radiation monitoring probe according to claim 1, characterized in that: Three rotating blocks (14) are uniformly arranged at equal intervals on the surface of the intermediate sleeve ring (13) in a circumferential distribution, the upper end of the supporting leg (15) is rotationally connected with the rotating block (14) through a rotating shaft, and the lower end of the supporting leg (15) is located on the same horizontal plane.

3. A calibration stand for a nuclear power plant radiation monitoring probe according to claim 1, characterized in that: The side surface of the front supporting ring (3) and the rear supporting ring (31) is uniformly provided with three convex blocks (32) in a circumferential distribution at equal intervals, and the central part of the convex block (32) is provided with a through hole.

4. A nuclear power plant radiation monitoring probe specific calibration stand according to claim 3, characterized in that: The convex block (32) on the front supporting ring (3) is aligned with the convex block (32) on the rear supporting ring (31), one end of the connecting rod (33) is inserted into the convex block (32) of the front supporting ring (3), and the other end is inserted into the convex block (32) of the rear supporting ring (31).

5. A calibration stand for a nuclear power plant radiation monitoring probe according to claim 1, characterized in that: The inner surface of the positive circular sleeve (34), the inner surface of the semicircular sleeve (35) and the inner surface of the front supporting ring (3) are flush, and the upper surface of the semicircular sleeve (35) is aligned with the horizontal diameter of the positive circular sleeve (34).

6. A calibration stand for a nuclear power plant radiation monitoring probe according to claim 1, characterized in that: Two handle blocks (16) are symmetrically arranged on the two sides of the upper sleeve ring (12).

7. A nuclear power plant radiation monitoring probe specific calibration stand according to claim 1, characterized in that: The lower surface of the positive circular sleeve (34) is fixedly installed in the notch (22) of the front supporting block (21).

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