CN218726772U - Shielding formula gamma ray detection device - Google Patents

Abstract

The utility model discloses a shielding gamma ray detection device, which comprises a source box container base fixedly arranged on the ground by screws; the mechanical arm base is rotatably arranged in the middle of the upper surface of the source box container base and is driven to rotate by a motor fixedly arranged in the source box container base; the primary mechanical arm is rotatably arranged above the mechanical arm base, and the top end of the primary mechanical arm is rotatably provided with a secondary mechanical arm; the lifting shielding bin is rotatably arranged on the outer side surface of the primary mechanical arm; the tested pipe body is arranged inside the lifting shielding bin in a penetrating mode. This shielding formula gamma ray detection device adopts neotype structural design for the in-process that utilizes gamma ray to detect a flaw and detect does not need clear yard and seal the management, thereby improves the work efficiency of whole testing process greatly, and does not influence other staff's in the factory building normal work, avoids extravagant staff's time.

Description

Shielding formula gamma ray detection device

Technical Field

The utility model relates to a ray detection technical field specifically is a shielding formula gamma ray detection device.

Background

During the operation of a nuclear power plant, equipment components can be influenced by various factors such as temperature, stress, irradiation, hydrogen adsorption, corrosion, vibration, abrasion and the like to cause the performance change of the component materials, such as aging, embrittlement, fatigue and the formation and development of defects, so that a nondestructive testing method is used for in-service inspection, some mechanical pressure-bearing equipment is systematically inspected, existing defects are tracked, newly generated defects are detected, analyzed and evaluated to ensure that the defects do not cause the functional failure of the equipment and the components before the next inspection, the safe and economic operation of the nuclear power plant is ensured, the ray detection (also called as ray detection) is one of five conventional nondestructive testing modes, the defects possibly generated in the inspected object are inspected through different intensities of transmitted rays at different parts, the ray detection method is widely applied in the industrial and nuclear power fields, and is also widely applied in the fields of special equipment, aviation, ships, weapons, engineering, bridges, steel structures and the like;

taking nuclear facilities as an example, according to related legal and regulatory requirements such as national nuclear safety law, nuclear power plant in-service inspection, nuclear power plant quality assurance safety regulation and the like, a radiation detection mode is required to be used to be clear in the nuclear power plant in-service inspection outline, and the radiation detection mode generally comprises relevant pipeline weld areas such as a reactor pressure vessel, a voltage stabilizer, a steam generator (primary side), a reactor coolant system, an ASG pipeline (auxiliary water supply pipeline), a steam turbine bypass pipeline and the like, wherein the radiation detection upper limit is limited by the ray penetration capacity, for example, the maximum steel thickness of 420kV X-ray machine penetration is about 80mm (when the pipeline is inspected, the pipeline is circular, two-layer thickness structure is required to be considered, so the penetration thickness is required to be reduced by half aiming at the pipeline structure), the maximum steel thickness of 60CO or 192Ir radioactive isotope gamma rays penetration is about 200mm, and in order to meet the penetration requirement, the nuclear power plant still uses 60CO or 192Ir gamma ray detection devices with strong penetration capacity in large quantity;

in actual use, nuclear power plant all adopts necessary distance or seals management and control measure when using gamma ray detection device, in order to avoid personnel to receive accidental irradiation, and nuclear power plant usually will clear a yard to seal management and control measure to its factory building because of the nuclear island factory building needs to use gamma ray detection during overhaul, because clear a yard makes the inside normal work that can't carry out of factory building with sealed management to waste time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shielding formula gamma ray detection device to propose in solving above-mentioned background art carrying out extensive flaw detection process and need seal the problem of management factory building and extravagant normal time from production.

In order to achieve the above object, the utility model provides a following technical scheme: a shielding type gamma ray detection device comprises a source box container base fixedly installed on the ground by screws, and also comprises:

the mechanical arm base is rotatably arranged in the middle of the upper surface of the source box container base and is driven to rotate by a motor fixedly arranged in the source box container base;

the primary mechanical arm is rotatably arranged above the mechanical arm base, the top end of the primary mechanical arm is rotatably provided with a secondary mechanical arm, and power sources of the primary mechanical arm and the secondary mechanical arm are both motors;

the lifting shielding bin is rotatably arranged on the outer side surface of the primary mechanical arm, and the cross section of the lifting shielding bin is of a square structure;

the tested pipe body is arranged inside the lifting shielding bin in a penetrating mode;

and the ray emission head is fixedly arranged on the outer side surface of the secondary mechanical arm and is used for emitting gamma rays.

Preferably, lift shielding storehouse and include shielding plate and lower shielding plate two parts, just go up the shielding plate with the shielding plate all sets up to lead plate shielding material down, utilizes lead plate shielding material to shield the inside gamma ray of lifting shielding storehouse, avoids influencing staff on every side.

Preferably, the side length of the square of the cross section of the lifting shielding bin is 120cm, and the maximum supporting weight of the primary mechanical arm and the secondary mechanical arm is 3t.

Preferably, the first-stage mechanical arm and the second-stage mechanical arm are internally provided with a fixed source whip tube in a penetrating mode, the bottom end of the fixed source whip tube is connected to a control component inside a source box container base, and the control component inside the source box container base can be opened and generates gamma rays.

Preferably, the fixed source whip comprises a transmission tube and a shielding sleeve, the shielding sleeve is wrapped outside the transmission tube, the transmission tube can transmit the generated gamma rays, and the external shielding sleeve can achieve the purpose of shielding and preventing diffusion.

Preferably, the transmission tube is a hollow structure for transmitting gamma rays, the top end of the transmission tube is fixedly connected with the ray emission head, and the gamma rays in the transmission tube can be emitted through the ray emission head to perform flaw detection on the detected tube.

Compared with the prior art, the beneficial effects of the utility model are that: this shielding formula gamma ray detection device adopts neotype structural design for the in-process that utilizes gamma ray to detect a flaw and detect does not need to clear away and seal the management, thereby improves the work efficiency of whole testing process greatly, and does not influence other staff's in the factory building normal work, avoids extravagant staff's time, and its concrete content is as follows:

1. the supporting shielding bin, the first-stage mechanical arm and the second-stage mechanical arm are matched, the motor is used for driving the first-stage mechanical arm and the second-stage mechanical arm to rotate to drive the supporting shielding bin to move, then the rotation between the supporting shielding bin and the second-stage mechanical arm (the motor driving inside the second-stage mechanical arm) is used for driving the supporting shielding bin to open and close, and the clamping and shielding of the inner detected pipe body are achieved.

2. The matching between the ray emission head and the fixed source whip tube is used, the control component inside the base of the source box container is utilized to open and generate gamma rays, and then the gamma rays are transmitted to the ray emission head through the transmission tube inside the fixed source whip tube to be emitted, so that the flaw detection of the detected tube on the inner side of the lifting shielding bin is realized.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of a three-dimensional front view structure of the lifting shielding bin of the present invention;

fig. 4 is a schematic view of the front view section structure of the primary mechanical arm and the secondary mechanical arm of the present invention;

fig. 5 is the structure schematic diagram of the local three-dimensional main view of the fixed source whip tube of the present invention.

In the figure: 1. a source box container base; 2. a mechanical arm base; 3. a primary mechanical arm; 4. a secondary mechanical arm; 5. lifting the shielding bin; 501. an upper shield plate; 502. a lower shield plate; 6. a measured pipe body; 7. a radiation emitting head; 8. fixing the source whip tube; 801. a conveying pipe; 802. and (4) a shielding sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a shielded gamma ray detection device comprises a source box container base 1 fixedly installed on the ground by screws, and also comprises: the mechanical arm base 2 is rotatably arranged in the middle of the upper surface of the source box container base 1, and the mechanical arm base 2 is driven to rotate by a motor fixedly arranged in the source box container base 1; the primary mechanical arm 3 is rotatably arranged above the mechanical arm base 2, the secondary mechanical arm 4 is rotatably arranged at the top end of the primary mechanical arm 3, and power sources of the primary mechanical arm 3 and the secondary mechanical arm 4 are motors; the lifting shielding bin 5 is rotatably arranged on the outer side surface of the primary mechanical arm 3, and the cross section of the lifting shielding bin 5 is of a square structure; the tested pipe body 6 is arranged inside the lifting shielding bin 5 in a penetrating mode; the ray emission head 7 is fixedly arranged on the outer side surface of the secondary mechanical arm 4, and the ray emission head 7 is used for emitting gamma rays;

the lifting shielding bin 5 comprises an upper shielding plate 501 and a lower shielding plate 502, the upper shielding plate 501 and the lower shielding plate 502 are made of lead plate shielding materials, the side length of a square of the cross section of the lifting shielding bin 5 is 120cm, the maximum supporting weight of a primary mechanical arm 3 and a secondary mechanical arm 4 is 3t, a fixed source whip tube 8 penetrates through the interiors of the primary mechanical arm 3 and the secondary mechanical arm 4, the bottom end of the fixed source whip tube 8 is connected to a control component inside a source box container base 1, the fixed source whip tube 8 comprises a transmission tube 801 and a shielding sleeve 802, the shielding sleeve 802 wraps the exterior of the transmission tube 801, the transmission tube 801 is of a hollow structure for gamma ray transmission, and the top end of the transmission tube 801 is fixedly connected with a ray emission head 7;

when the device is used, firstly, the lifting shielding bin 5 is moved to a proper height by the rotation of the first-stage mechanical arm 3 and the second-stage mechanical arm 4, then the motor is used for driving the upper shielding plate 501 and the lower shielding plate 502 to rotate outwards relatively, so that the lifting shielding bin 5 is integrally opened, then the tested tube 6 is placed between the upper shielding plate 501 and the lower shielding plate 502, clamping is realized by the folding between the upper shielding plate 501 and the lower shielding plate 502, then the switch is used for opening the control part inside the source box container base 1 and generating corresponding gamma rays, the generated gamma rays are transmitted through the transmission tube 801 in the fixed source whip tube 8, certain shielding is performed by the external shielding sleeve 802 in the transmission process, and finally the gamma rays transmitted in the transmission tube 801 are shot into the lifting shielding bin 5 through the ray emitting head 7 to perform flaw detection work on the tested tube 6.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A shielding type gamma ray detection device comprises a source box container base (1) fixedly installed on the ground through screws, and is characterized by further comprising:

the mechanical arm base (2) is rotatably arranged in the middle of the upper surface of the source box container base (1), and the mechanical arm base (2) is driven to rotate by a motor fixedly arranged in the source box container base (1);

the primary mechanical arm (3) is rotatably mounted above the mechanical arm base (2), the secondary mechanical arm (4) is rotatably mounted at the top end of the primary mechanical arm (3), and power sources of the primary mechanical arm (3) and the secondary mechanical arm (4) are motors;

the lifting shielding bin (5) is rotatably arranged on the outer side surface of the primary mechanical arm (3), and the cross section of the lifting shielding bin (5) is of a square structure;

the tested pipe body (6) is arranged inside the lifting shielding bin (5) in a penetrating mode;

and the ray emission head (7) is fixedly arranged on the outer side surface of the secondary mechanical arm (4), and the ray emission head (7) is used for emitting gamma rays.

2. The shielded gamma ray detection device of claim 1, wherein: the lifting shielding bin (5) comprises an upper shielding plate (501) and a lower shielding plate (502), and the upper shielding plate (501) and the lower shielding plate (502) are made of lead plate shielding materials.

3. The shielded gamma ray detection device according to claim 2, wherein: the side length of a square of the cross section of the lifting shielding bin (5) is 120cm, and the maximum supporting weight of the primary mechanical arm (3) and the secondary mechanical arm (4) is 3t.

4. The shielded gamma ray detection device according to claim 3, wherein: the one-level mechanical arm (3) and the second-level mechanical arm (4) are internally provided with a fixed source whip tube (8) in a penetrating mode, and the bottom end of the fixed source whip tube (8) is connected to a control component inside the source box container base (1).

5. The shielded gamma ray detection device of claim 4, wherein: the fixed source whip pipe (8) comprises a transmission pipe (801) and a shielding sleeve (802), and the shielding sleeve (802) wraps the outside of the transmission pipe (801).

6. The shielded gamma ray detection device of claim 5, wherein: the transfer pipe (801) is arranged into a hollow structure for transmitting gamma rays, and the top end of the transfer pipe (801) is fixedly connected with the ray emission head (7).

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