TWI873789B - Separable radiation detection box - Google Patents

Abstract

The present invention provides a separable radiation detection box comprising a box body, multiple radiation detectors, and a driving unit. The box body includes a bottom and two side portions, where the side portions can be selectively brought close to or moved away from the bottom. When the side portions are mutually abutted with the bottom, they collectively form a closed accommodating space. The radiation detectors are arranged on the surfaces of the bottom and the side portions facing the accommodating space. The driving unit is connected to the side portions.

Description

Separate radiation detection box

The present invention provides a radiation detection box, and in particular, a separate radiation detection box whose box body can be selectively separated and moved.

Radiation detection is a detection technology used in industry. Specifically, the products after nuclear reactions and the equipment used in the reaction process may be contaminated by radiation and cause harm to the human body. Therefore, the above items need to be tested to ensure that the radiation level is lower than the specified threshold before they can be further classified and processed. When the inspector wants to detect specific radiation pollutants, it is necessary to use a conveying element such as a belt to transport the container containing the object to be tested to the inside of the radiation detection box, and close the door of the detection box. The radiation detector installed inside the detection box detects the radiation released by the object to be tested, thereby determining the radiation level of the object to be tested.

In the past, the weight of a larger container (including the object to be tested) for loading the object to be tested was about 600 to 1,000 kilograms. However, the size of the container used for some large objects to be tested is quite large, and the total weight may be increased to more than five tons, which cannot be transported by ordinary belts. If a crane or other suspension mechanism is used to transport the container, it is easy to collide with the test box and cause damage.

In addition, during the testing process, in order to prevent radiation leakage from the object to be tested, the door and wall of the testing box are inlaid with lead plates with a thickness of more than five centimeters, making the door itself extremely heavy. It takes thirty to fifty seconds to slide from the fully closed position to the fully open position. When the object to be tested is placed in the testing box, the fully open door needs to be slid to the fully closed position again before the testing operation can be carried out, which invisibly increases the time required for the testing operation.

The inventor then devoted all his efforts to research and developed a separate radiation detection box that can be selectively separated and moved, in order to reduce transportation wear and shorten the detection operation time.

The present invention provides a separate radiation detection box, including a box body, a plurality of radiation detectors and a driving unit. The box body includes a bottom and two sides, the sides selectively approach or move away from the bottom, and when the sides and the bottom abut against each other, the sides and the bottom together form a closed accommodation space; the radiation detectors are arranged on the bottom and the surface of the side facing the accommodation space; the driving unit is connected to the side.

In one embodiment, the side portion is suitable for approaching or moving away from the bottom along a sliding direction and includes a ring wall portion and a side wall portion. The ring wall portion includes a ring wall and is formed with a through groove, each ring wall surrounds each through groove, the side portion is suitable for abutting each other through each ring wall, and each through groove penetrates each ring wall portion along the sliding direction. The side wall portion is movably arranged on the outer side of the corresponding ring wall portion in the sliding direction, and each side wall portion includes a side wall. When each side wall portion abuts against each corresponding ring wall portion, each side wall blocks each through groove.

In one embodiment, each of the above-mentioned side wall portions further includes an extension wall, each of which is disposed on the periphery of each side wall and extends along the sliding direction. When each of the side wall portions abuts against each of the corresponding annular wall portions, each annular wall abuts against each of the extension walls.

In one embodiment, the driving unit includes a plurality of motors, two of which are respectively suitable for driving the annular wall portion and the side wall portion of one of the side portions.

In one embodiment, the annular wall portion of each side portion and one of the side wall portions include a side wall shielding member. When each side wall portion abuts against each annular wall portion, each side wall shielding member is located in the gap between the corresponding side wall portion and the annular wall portion.

In one embodiment, each of the above-mentioned annular wall portions includes a plurality of annular portions, which are arranged along the sliding direction and are detachably connected to each other.

In one embodiment, the above-mentioned rings each include a ring wall, and one of the two adjacent rings among these rings further includes a ring shield. When the rings abut against each other, the ring shield is located in the gap between the ring walls of the rings.

In one embodiment, the above-mentioned side portions each include a ring wall, and one of the two adjacent side portions further includes a side shielding member. When the side portions and the bottom portion abut against each other, the side shielding member is located in the gap between the ring walls.

In one embodiment, the separate radiation detection box further includes a carrier, which is disposed on the bottom, and one of the radiation detectors is disposed between the bottom and the carrier.

In one embodiment, the carrier includes a plurality of rollers, and the driving unit is also connected to the rollers.

Thus, the separated radiation detection box of the present invention can selectively approach or move away from the bottom by driving the side part through the driving unit. Through the separation and movement of the box body, the original process of actively lifting or transporting the container containing the object to be tested into the box body can be transformed into the container containing the object to be tested being passively sealed by the box body, thereby achieving the effect of reducing transportation wear and shortening the detection time.

In order to make the above technical features and advantages of the present invention more clearly understood, an embodiment is given and described in detail with the attached drawings as follows.

1. 1’: Separate radiation detection box

10, 10’: Box

100: bottom

200a, 200b, 200a’, 200b’: side

210, 210’: Ring wall

212: Environmental Protection Department

212a: Ring wall

212b: Side shielding piece

212c: Ring shielding piece

216: Through slot

220: Side wall

222: Side wall

224: Side wall shielding piece

226:Extended wall

20, 20’: Drive unit

22, 22’: Slide rail

24: Motor

30: Radiation detector

40: Carrier

2: Object to be tested

Figure 1 is a three-dimensional schematic diagram of an embodiment of the separate radiation detection box of the present invention.

Figure 2 is a front view of the separate radiation detection box in Figure 1 when it is fully opened.

Figure 3 is a three-dimensional schematic diagram of the bottom and drive unit in Figure 2.

Figure 4 is a schematic diagram of the right side view of the annular wall portion of the first side portion in Figure 2.

Figure 5 is a schematic diagram of the right side view of the side wall portion of the first side portion in Figure 2.

Figure 6 is a front view schematic diagram of the separate radiation detection box in Figure 2 during the sealing process.

Figure 7 is a three-dimensional schematic diagram of another embodiment of the separate radiation detection box of the present invention.

Figure 8 is a front view of the separate radiation detection box in Figure 7 when it is fully opened.

The above-mentioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are for the convenience of description and are not intended to limit the present invention. In addition, in the following embodiments, the same or similar components will be labeled with the same or similar numbers, and repeated descriptions will be omitted appropriately.

Please refer to Figures 1 and 2, wherein Figure 1 is a three-dimensional schematic diagram of an embodiment of the separate radiation detection box of the present invention, and Figure 2 is a front view schematic diagram of the separate radiation detection box of Figure 1 when it is fully opened. The separate radiation detection box 1 of this embodiment is suitable for detecting the radiation amount of an object to be tested, and includes a box body 10, a driving unit 20 and a plurality of radiation detectors 30, wherein the box body 10 is used to accommodate and enclose the object to be tested; the driving unit 20 is connected to the box body 10 and is used to drive at least a part of the box body 10; and the radiation detector 30 is arranged on the box body 10 and is used to detect the radiation amount of the object to be tested.

Please refer to FIG. 2 and FIG. 3 together, wherein FIG. 3 is a three-dimensional schematic diagram of the bottom and the drive unit in FIG. 2. In detail, the housing 10 includes a bottom 100 and two side parts, and the drive unit 20 includes a slide rail 22 and a plurality of motors 24, wherein the bottom 100 is, for example, fixedly arranged in the center of the slide rail 22, and the side parts are slidably arranged on the slide rail 22 and are respectively arranged on the left and right sides of the bottom 100, and the motor 24 is connected to these side parts. For a clearer explanation, the side parts located on the left and right sides of the bottom 100 in FIG. 2 are respectively referred to as the first side part 200a and the second side part 200b. With such a configuration, the driving unit 20 drives the first side portion 200a and the second side portion 200b to slide relative to the bottom portion 100 along the extension direction of the slide rail 22 through the motor 24, that is, these side portions can selectively approach or move away from the bottom portion 100. When the user wants to detect the radiation amount of a specific object to be tested, he only needs to slide the first side portion 200a and the second side portion 200b to the fully opened position as shown in Figure 2 through the driving unit 20, place the object to be tested on the bottom 100, and drive the first side portion 200a and the second side portion 200b to approach the bottom 100 through the driving unit 20 so that they abut each other. The bottom 100, the first side portion 200a and the second side portion 200b will jointly form a closed accommodation space, and the object to be tested is located in the accommodation space, and the radiation detection operation can be performed.

Please refer to FIG. 2, FIG. 4 and FIG. 5 together, wherein FIG. 4 is a schematic diagram of the right side view of the annular wall portion of the first side portion in FIG. 2, and FIG. 5 is a schematic diagram of the right side view of the side wall portion of the first side portion in FIG. 2. As shown in FIG. 2, the first side portion 200a and the second side portion 200b are respectively adapted to approach or move away from the bottom 100 along a sliding direction (i.e., the extension direction of the slide rail 22) and respectively include an annular wall portion 210 and a side wall portion 220. As shown in FIG. 4, the annular wall portion 210 includes an annular wall 212a and is formed with a through groove 216, wherein the annular wall 212a surrounds the through groove 216, and the through groove 216 penetrates the annular wall portion 210 along the sliding direction. On the other hand, as shown in FIG. 2 and FIG. 5 , the side wall portion 220 is movably disposed on the outer side of the corresponding annular wall portion 210 in the sliding direction and includes a side wall 222. Thus, the motor 24 of the driving unit 20 can drive the annular wall portion 210 and the side wall portion 220 to slide relative to the bottom 100, which means that the annular wall portion 210 and the side wall portion 220 can be separated from each other and have different displacement amounts, greatly increasing the flexibility of the use of the separated radiation detection box 1. When the bottom 100, the first side portion 200a and the second side portion 200b form a closed accommodation space, the first side portion 200a and the second side portion 200b abut against each other through the respective ring walls 212a, and the side walls 222 of the side wall portion 220 shield the respective through slots 216, thereby preventing the ambient background radiation outside the test box from entering the test box and affecting the test results, and preventing the radiation of the test object inside the test box from leaking through the opening of the separated radiation test box 1, effectively reducing the possible harm to the health of radiation workers.

In some possible embodiments, the side wall portion 220 may further include an extension wall 226, wherein the extension wall 226 is disposed on the periphery of the side wall 222 and extends along the sliding direction. In this case, when the side wall portion 220 abuts against the annular wall portion 210, the annular wall 212a of the annular wall portion 210 abuts against the extension wall 226 to form a closed accommodation space. However, according to actual needs, the side wall portion 220 may also not include the extension wall 226 as shown in this embodiment, and only the side wall 222 abuts against the annular wall 212a, and the present invention is not limited to this.

On the other hand, as shown in FIG. 2 to FIG. 5 , the radiation detector 30 is disposed on the surface of the bottom 100 , the first side 200 a and the second side 200 b facing the accommodation space. In this embodiment, the radiation detectors 30 including the photomultiplier tubes and the radiation detectors are, for example, evenly arranged on the surfaces of the bottom 100, the first side 200a and the second side 200b, that is, four radiation detectors 30 are arranged on the bottom 100; two radiation detectors 30 are arranged on each of the three directions of the annular wall 212a of the first side 200a; four radiation detectors 30 are arranged on the side wall 222 of the first side 200a, and the arrangement of the radiation detectors 30 on the second side 200b is exactly the same as that on the first side 200a. Thus, when the bottom 100, the first side 200a and the second side 200b are in contact with each other, four radiation detectors 30 including photomultiplier tubes and radiation detectors are arranged in six directions of the accommodating space, so that the radiation amount of the object to be detected can be accurately and reliably detected.

Please refer to Figure 2 again. In order to prevent radiation from entering and exiting the gap between the two annular walls 212a when the annular wall portion 210 of the first side portion 200a and the annular wall portion 210 of the second side portion 200b abut against each other, the annular wall portion 210 of one of the first side portion 200a and the second side portion 200b of this embodiment further includes a side shielding member 212b, wherein the side shielding member 212b is, for example, configured on the inner surface of the annular wall 212a of the second side portion 200b and extends along the sliding direction. When the bottom 100, the first side portion 200a and the second side portion 200b are in contact with each other, the side shielding member 212b will be located at the gap between the annular walls 212a from the inner side of the annular wall portion 210, thereby effectively preventing radiation from entering and exiting the gap between the annular walls 212a.

Similarly, as shown in FIG5 , in order to prevent radiation from entering and exiting from the gap between the annular wall portion 210 and the side wall portion 220 when the annular wall portion 210 and the side wall portion 220 abut against each other, one of the annular wall portion 210 and the side wall portion 220 may include a side wall shielding member. In this embodiment, the side wall portion 220 includes a side wall shielding member 224, and the side wall shielding member 224 extends along the sliding direction. When the side wall portion 220 abuts against the annular wall portion 210, the side wall shielding member 224 is located in the gap between the side wall portion 220 and the annular wall portion 210, thereby effectively preventing radiation from entering and exiting.

It is worth mentioning that when the side wall portion 220 includes the extension wall 226, since the annular wall 212a of the annular wall portion 210 abuts against the extension wall 226, the extension length 224 of the side wall shielding member is preferably greater than the extension length of the extension wall 226, so as to achieve the effect of truly shielding the gap.

Please refer to Figure 2 again. Based on the transportation requirements or to avoid damaging the radiation detector 30, in some possible embodiments, the container for carrying the object to be tested may not be directly arranged on the bottom 100. In detail, the separated radiation detection box 1 may also include a carrier 40, wherein the carrier 40 is, for example, a carrier platform and is arranged on the bottom 100, and the radiation detector 30 is arranged between the bottom 100 and the carrier 40. Through such a configuration, the huge weight of the container can be supported by the carrier 40, thereby preventing the radiation detector 30 from being damaged.

Alternatively, in some other possible embodiments, the outside of the separated radiation detection box 1 may be configured with a belt or a conveyor wheel (not shown) that directly conveys the container to the inside of the box 10, and the carrier 40 includes a plurality of rollers corresponding to the belt or the conveyor wheel. In this case, the drive unit 20 may include a motor connected to these rollers, that is, when the container is transported by the belt or the conveyor wheel to a position adjacent to the box 10, the drive unit 20 may drive these rollers to rotate in the direction of the belt or the conveyor wheel, thereby moving the container to the top of the bottom 100.

Please refer to FIG. 6, which is a front view schematic diagram of the separated radiation detection box of FIG. 2 during the sealing process. The following is a detailed description of the process of how the separated radiation detection box 1 of this embodiment performs radiation detection on the object to be tested 2. First, the driving unit 20 drives the ring wall portion 210 and the side wall portion 220 of the first side portion 200a and the second side portion 200b to slide away from the bottom 100 along the sliding direction, so that each ring wall portion 210 and each side wall portion 220 moves to the fully open position as shown in FIG. 2. Then, the object to be tested 2 (or the container carrying the object to be tested 2) is placed on the bottom 100 through the gap between the side parts by a transport tool such as an overhead crane, a forklift or the above-mentioned conveying wheel, and the driving unit 20 is used to drive the annular wall 210 and the side wall 220 of the first side part 200a and the second side part 200b again, so that they approach the bottom 100 along the sliding direction and abut against each other, and the detection operation can be performed through the radiation detector 30.

The door of a general test box is extremely heavy due to lead filling. It takes thirty to fifty seconds to fully open the door from closed. After the object to be tested is placed in the test box, it takes the same amount of time to fully close the door. Since the separated radiation test box 1 does not need to go through the process of opening and closing the door to accommodate the object to be tested 2, compared with the commonly used design method (which requires opening and closing the door), the object to be tested does not need to spend time waiting for the door to open or close when it is placed in or removed from the test box. Therefore, the time for opening and closing the door can be saved, effectively reducing the overall testing operation time.

The design of the test box is to transport the object to be tested from the conveyor belt outside the box into the box. Since the first side 200a and the second side 200b can slide outward relative to the bottom 100 at the same time, when the same size of insertion gap is formed, the moving distance of the first side 200a and the second side 200b is only half of the conveying distance of the test box conveyor belt, and the time required is also only half of the previous test box conveying method, so it can effectively shorten the time required for the test operation.

It is worth mentioning that, although the driving unit 20 includes a slide rail 22 in this embodiment, and the slide rail 22 carries the first side portion 200a and the second side portion 200b, the present invention is not limited to this. According to the actual configuration requirements, the slide rail 22 can also be changed to a hanging rail arranged above the box 10, and the sliding directions of the first side portion 200a and the second side portion 200b are not limited to necessarily coincide or be parallel to each other, as long as they can form a closed accommodation space when combined, and allow the object to be tested to enter the box 10 when separated.

Please refer to Figures 7 and 8, wherein Figure 7 is a three-dimensional schematic diagram of another embodiment of the separate radiation detection box of the present invention, and Figure 8 is a front view schematic diagram of the separate radiation detection box of Figure 7 when it is fully opened. The separate radiation detection box 1' of this embodiment is substantially the same as the separate radiation detection box 1 of the previous embodiment, including a box body 10', a drive unit 20' and a plurality of radiation detectors 30. The main difference between the two is that the annular wall portion 210' of the first side portion 200a' and the second side portion 200b' of the separate radiation detection box 1' respectively include a plurality of annular portions 212, which are arranged along the sliding direction and can be detachably connected to each other.

Specifically, in order to correspond to the size of the object to be tested 2, the separated radiation detection box 1' can be designed as a rectangular parallelepiped shape like a container, and the ring wall portion 210' can include a plurality of ring portions 212, and the length of the slide rail 22' corresponds to the sliding stroke of these ring portions 212 and the side wall portion 220. Through such a configuration, the separated radiation detection box 1' can correspond to objects to be tested 2 of different sizes and have the same configuration density of radiation detectors 30 as the separated radiation detection box 1, thereby increasing the scope of application of the separated radiation detection box 1'.

As shown in FIG8 , in order to prevent radiation from entering and exiting from the gaps between the rings 212 when the rings 212 abut against each other, in this embodiment, one of the two adjacent rings 212 may include a ring shielding member 212c, and the ring shielding member 212c may extend along the sliding direction, for example. Thus, when the rings 212 abut against each other, the ring shielding member 212c may be aligned with the gaps between the rings 212, thereby effectively preventing radiation from entering and exiting.

The present invention has been disclosed in the above text in a preferred embodiment, but those familiar with the present technology should understand that the above embodiment is only used to illustrate the present invention and should not be interpreted as limiting the scope of the present invention. All changes and substitutions equivalent to the above embodiment should be considered to be within the scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the patent application.

1: Separate radiation detection box

10: Cabinet

100: bottom

200a, 200b: Side

210: Ring wall

212b: Side shielding piece

220: Side wall

20: Drive unit

22: Slide rail

24: Motor

30: Radiation detector

40: Carrier

Claims (10)

A separate radiation detection box includes: a box body, including: a bottom; and two side parts, selectively close to or away from the bottom, when the two side parts and the bottom are in contact with each other, the two side parts and the bottom together form a closed accommodation space; a plurality of radiation detectors, arranged on the surface of the bottom and the two side parts facing the accommodation space; and a driving unit, connected to the two side parts. As described in claim 1, the two side parts are suitable for approaching or moving away from the bottom along a sliding direction and respectively include: an annular wall part, including an annular wall and forming a through groove, each of the annular walls surrounds each of the through grooves, the two side parts are suitable for abutting each other through each of the annular walls, and each of the through grooves penetrates each of the annular wall parts along the sliding direction; and a side wall part, movably arranged on the outer side of the corresponding annular wall part in the sliding direction, and each of the side wall parts includes a side wall, when each of the side wall parts abuts against each of the corresponding annular wall parts, each of the side walls blocks each of the through grooves. As described in claim 2, the separate radiation detection box, wherein each of the side wall portions further includes an extension wall, each of the extension walls is arranged on the periphery of each of the side walls and extends along the sliding direction, and when each of the side wall portions abuts against the corresponding each of the annular wall portions, each of the annular walls abuts against each of the extension walls. The separated radiation detection box as described in claim 2, wherein the driving unit includes a plurality of motors, two of which are respectively suitable for driving the ring wall portion and the side wall portion of one of the two side portions. As described in claim 2, the separated radiation detection box, wherein the annular wall portion of each side portion and one of the side wall portions include a side wall shielding member, and when each side wall portion abuts against each annular wall portion, each side wall shielding member is located in the gap between the corresponding side wall portion and the annular wall portion. As described in claim 2, the separate radiation detection box, wherein each of the annular wall portions includes a plurality of annular portions, the plurality of annular portions are arranged along the sliding direction and are separably connected to each other. As described in claim 6, the separate radiation detection box, wherein the plurality of rings respectively include a ring wall, and one of the two adjacent rings among the plurality of rings further includes a ring shielding member, and when the two rings abut against each other, the ring shielding member is located in the gap between the ring walls of the two rings. As described in claim 1, the two side parts respectively include a ring wall, and one of the two side parts further includes a side shielding member, and when the two side parts and the bottom are in contact with each other, the side shielding member is located in the gap between the ring walls. The separate radiation detection box as described in claim 1 further includes a carrier, which is arranged on the bottom, and one of the plurality of radiation detectors is arranged between the bottom and the carrier. A separate radiation detection box as described in claim 9, wherein the carrier includes a plurality of rollers, and the drive unit is also connected to the plurality of rollers.

Images