Sealed radioactive source picker

Abstract

The utility model discloses a sealed radioactive source picker which comprises a telescopic rod and a picking assembly fixed at the front end of the telescopic rod, and the telescopic rod and the picking assembly form a preset angle in space so that the picking assembly can make contact with the surface of a sealed radioactive source to be picked. Wherein the picking assembly is configured to comprise an inclined rod and an electromagnet arranged on the inclined rod, and a charging power source electrically connected with the electromagnet is arranged on the telescopic rod; and an iron sheet matched with the electromagnet is arranged on the surface of the sealed radioactive source to be picked up. Compared with an existing mechanical clamp, the sealed radioactive source pickup device provided by the utility model adopts an electromagnetic suction mode, can realize remote operation, improves the radiation safety of operators, and ensures the pickup stability, effectiveness and convenience.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of radioactive source pickup. More specifically, the utility model relates to a heterogeneous sealed radioactive source pickup device. BACKGROUND

[0002] A radioactive source is a radiation source made of radioactive material. Radioactive sources can be divided into alpha sources, beta sources, gamma sources, and neutron sources according to the type of radiation released; and can be divided into sealed radioactive sources (radioactive material sealed in a package that meets certain requirements) and unsealed radioactive sources (radioactive material without a package). Most industrial, agricultural, and medical radioactive sources are sealed radioactive sources. For example, material level meters, flaw detectors, radiotherapy devices, and logging devices used in industrial, agricultural, and medical production all use sealed sources, such as cobalt-60, cesium-137, iridium-192, americium-241, carbon-14, and neutrons. Generally, sealed sources have long half-lives and can be reused, so during the entire use cycle, the radioactive source is repeatedly stored, transferred, used, transferred, and stored.

[0003] During this process, the radioactive source is removed from the sealed storage tank and placed in a nuclear instrument for use, and then removed from the nuclear instrument and placed back in the storage tank. For alpha and beta sources with low radioactivity, a short-handled mechanical clamp (such as tweezers) can be used to complete the operation of picking up and placing the source. This close-range, mechanical radioactive source pickup device can affect the radiation protection safety of the operator and the efficiency of picking up and placing the radioactive source during the picking up and placing process. If the gamma and neutron sources have high radioactivity, a long-handled mechanical clamp (such as patent number 200920204046.X) must be used. Currently, most radioactive source pickup devices use mechanical clamps. Due to the small size of the radioactive source and the small size of the source inlet and outlet of the storage tank, the use of this mechanical radioactive source pickup device is limited, and the operator must clearly identify the location of the radioactive source before the mechanical clamp can be used to pick up the source. Otherwise, the stability of the clamp will be limited.

[0004] Of course, there are also electromagnetic clamps for picking up radioactive sources in the prior art, such as patent application number 202021465042.X Co-60 radioactive source remote grabbing device, which is not suitable for picking up most radioactive sources that do not have magnetic properties.

[0005] For example, patent application number 201911094074.5 Well logging radioactive source automatic installation and replacement device also uses an electromagnetic clamp, but it sets an iron sheet on the radioactive source box, which can only pick up the radioactive source box and cannot directly pick up the radioactive source that cannot be attracted. The structure is complex and not suitable for picking up small radioactive sources.

[0006] The current pickup device for radioactive source has the defect of poor stability in operation, and the applicability of electromagnet is not wide enough. Contents of the utility model

[0007] An object of the present application is to solve the above problems and / or defects, and to provide the advantages described later.

[0008] In order to achieve these objects and other advantages of the present application, a sealed radioactive source pickup device is provided, which comprises a telescopic rod, a pickup assembly fixed at the front end of the telescopic rod, and the telescopic rod and the pickup assembly are at a predetermined angle in space, so that the pickup assembly is in contact with the surface of the sealed radioactive source to be picked up.

[0009] The pickup assembly is configured to include a diagonal rod and an electromagnet arranged on the diagonal rod, and the telescopic rod is provided with a charging power source electrically connected with the electromagnet.

[0010] The surface of the sealed radioactive source to be picked up is provided with an iron sheet matched with the electromagnet.

[0011] Preferably, it further comprises a handle arranged at the free end of the telescopic rod.

[0012] The handle has a hollow cavity inside, and the charging power source is arranged in the cavity.

[0013] The handle is provided with a switch for switching the on-off state of the communication circuit of the electromagnet and the charging power source.

[0014] Preferably, it further comprises a radiation detector arranged on the telescopic rod and close to one side of the handle.

[0015] The telescopic rod or the radiation detector is provided with a terminal in communication connection with the radiation detector.

[0016] Preferably, the front end of the telescopic rod is further provided with a camera mechanism and an RFID reader in electrical connection with the charging power source.

[0017] The storage tank body of the sealed radioactive source is provided with an electronic tag matched with the RFID reader.

[0018] The camera mechanism and the RFID reader are in communication connection with the terminal.

[0019] The utility model discloses at least includes following beneficial effect: the utility model discloses for the pickup of sealed radioactive source, relative to the mechanical clamp in prior art, adopt the mode of electromagnetic attraction, can realize long -distance operation, improve the radiation safety of operator, the stability, effectiveness, convenience of pickup is better, simultaneously through setting up corresponding iron sheet on the sealed radioactive source, on the basis of not damaging its radioactive source performance, it is convenient to pick up the operation of the radioactive source without magnetism, and the applicability of picking up the radioactive source is stronger.

[0020] Further, the sealed radioactive source pickup device integrates radiation detection, radioactive source identity identification and visual operation function, and can efficiently complete the operation of taking and placing the source under the condition of ensuring radiation safety.

[0021] Other advantages, objects and features of the utility model will be embodied in part by the following description, and will also be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structural schematic diagram of sealed radioactive source pickup device in an embodiment of the utility model;

[0023] Figure 2 It is the working flow chart of sealed radioactive source pickup device in the utility model. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail in combination with the drawings, so that those skilled in the art can implement according to the description.

[0025] It should be understood that the terms such as "have", "contain" and "include" used in this paper do not exclude the presence or addition of one or more other elements or combinations thereof.

[0026] It should be noted that in the description of the utility model, the orientation or position relationship indicated by the terms is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, structure and operation, so it cannot be understood as a limitation on the utility model.

[0027] In the description of the utility model, unless another definite provision and limitation, the term "installation", "set with", "sleeve set / interface", "connection" and so on, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can through intermediate medium indirectly connect, can be two elements inside the intercommunication, for the ordinary skilled in the art, can understand the specific meaning of the above-mentioned term in the utility model according to specific circumstances.

[0028] In addition, in the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can be the first and second features directly contact, or the first and second features indirectly contact through intermediate medium.And, the first feature is "on", "above" and "on" the second feature can be the first feature is directly above or obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height.The first feature is "under", "below" and "under" the second feature can be the first feature is directly below or obliquely below the second feature, or just indicates that the first feature is lower than the second feature in horizontal height.

[0029] Embodiment 1

[0030] A sealed radioactive source pickup, as shown in Figure 1 Figure, comprising telescopic rod 1, pickup assembly fixed in telescopic rod 1 front end, the telescopic rod 1 and pickup assembly are in space predetermined angle, so that pickup assembly and the surface of the sealed radioactive source 2 to be picked contact, telescopic rod 1 is the carrier of other parts of sealed radioactive source pickup, through manual adjustment, the length of telescopic rod can be changed, in actual application, telescopic rod 1 can adopt the way of multi-section thread connection, also can adopt the way of electric, cylinder control telescopic, or similar to the multi-section telescopic structure of umbrella support rod, the tail end of inclined rod 3 is rotationally connected with the front end of telescopic rod 1 (here, the rotationally connected can be any kind of way similar to hinged, and according to the installation position of inclined rod 3, the corresponding protruding joint is arranged on the corresponding position of telescopic rod 1, or the installation slot is arranged, which is the conventional equipment in the field, and will not be described here), the angle with telescopic rod 1 can be changed through manual adjustment;

[0031] Wherein, the pickup assembly is configured to include inclined rod 3 and electromagnet 4 arranged on inclined rod 3, the telescopic rod 1 is provided with charging power supply 5 electrically connected with electromagnet 4, the battery 5 is arranged in the hollow position in the handle to provide direct current power supply for electromagnet, radiation detector, display screen, RFID reader and camera, the electromagnet 4 is embedded in the front end of the inclined rod, and generates magnetism when powered on, and the magnetism disappears when powered off.

[0032] The surface of the sealed radioactive source 2 to be picked up is provided with an iron sheet 6 matched with the electromagnet 4, the iron sheet 6 is attached to the cladding of the radioactive source (i.e. the outside of the radioactive source), under the action of the magnetic force of the electromagnet 4, the iron sheet 6 is attracted to the electromagnet together with the radioactive source, if the magnetic force of the electromagnet 4 disappears, the iron sheet 6 is separated from the electromagnet 4 together with the radioactive source, and the iron sheet can be set to be as large as the side surface of the radioactive source, or smaller than the side surface, or half-wrapped on the outside of the radioactive source (i.e. the iron sheet is in a U-shaped structure).

[0033] Working principle: in actual application, multiple line cards with preset distance are arranged on the telescopic rod and the inclined rod respectively, the modules are electrically connected through wired mode, and the cable is fixed through the line card to prevent winding during use, and in application, the telescopic rod is adjusted to the predetermined distance, the inclined rod is set to have a predetermined angle with the telescopic rod, so that the position of the electromagnet can smoothly enter or separate from the source tank body, and because the mass of the radioactive source itself is not large, when the radioactive source is taken out and picked up, the predetermined angle between the inclined rod and the telescopic rod will not be affected by the weight of the radioactive source, so as to cause instability during picking up and after picking up.

[0034] Embodiment 2

[0035] The embodiment 2 is a preferred embodiment of the utility model, and the specific structure is as shown in Figures 1-2 The following improvements are disclosed based on the embodiment 1:

[0036] Further comprising a handle 7 arranged at the free end of the telescopic rod 1, the handle 7 is located at the tail end of the telescopic rod 1, and is used for the operator to grasp and control the position of the radioactive source picker;

[0037] The handle 7 has a hollow cavity 8 inside, and the charging power supply 5 is arranged in the cavity 8;

[0038] The handle 7 is provided with a switch 9 for switching the on-off state of the communication circuit of the electromagnet 4 and the charging power supply 5, the switch 9 is located at the front end of the handle 7, and is used for opening or disconnecting the power supply of the electromagnet 5 in a pressing mode.

[0039] Working principle: in practical application, the operator completes the operation of the picker through the handheld handle, and the switch is used to control the power-on or power-off of the electromagnet (in embodiment 1, the electromagnet and the charging power source can adopt a quick plug to control the power-on or power-off of the electromagnet), so that it is more convenient, and the space in the handle can be used to store the charging power source. In practical application, the connection between the storage hole and the external cable can be realized by perforating or setting a window on the handle. The plug that can realize electrical connection can also be designed in the cavity, and the fixing key matched with the plug is arranged in the cavity. The charging power source is provided with a groove matched with the fixing key, so that the charging power source can be pushed into the cavity only in a predetermined direction. The plug is electrically connected with other external devices, thereby ensuring the need of equipment maintenance or maintenance. The charging interface matched with the charging power source is also arranged on the charging power source. The cavity in the handle is sealed by the cap, and the cap is provided with an opening for exposing the charging interface.

[0040] Embodiment 3

[0041] Embodiment 3 is a preferred embodiment of the utility model, which discloses the following improvements based on embodiment 1.

[0042] The radiation detector 10 is arranged on the telescopic rod 1 and close to one side of the handle 7, and the radiation detector 10 is close to the power switch 9 of the electromagnet 5, so as to measure the radiation dose (rate) value of the gamma, alpha, beta and neutron source of the operating environment in real time. When the radiation dose (rate) exceeds the set threshold value, an alarm information is sent out.

[0043] The front end of the telescopic rod 1 is also provided with a camera mechanism 11 electrically connected with the charging power source 5 and an RFID reader 12. The camera mechanism 11 is arranged below the RFID reader 12 and is used to collect images around the electromagnet in real time.

[0044] The telescopic rod 1 or the radiation detector 11 is provided with a terminal 13 in communication connection with the radiation detector 11. The terminal 13 is arranged at the front end of the radiation detector 11 and can be designed integrally with the radiation detector 11 or can be an additional flat terminal. The terminal 13 provides the functions of receiving signals and displaying signals, so as to display the battery capacity, the radiation detection value and the images collected by the camera in real time.

[0045] The storage tank body 14 of the sealed radioactive source 2 is provided with an electronic tag 15 matched with the RFID reader 12. The electronic tag 15 is attached to the outer surface of the storage tank body and is within a certain distance, so that the RFID reader 12 can correctly read the information on the electronic tag 15, so as to determine whether the storage tank body needs to be opened.

[0046] The camera mechanism 11, the RFID reader 12 and the terminal 13 are in communication connection, through the communication connection, the display screen of the terminal 13 can display the readout value of the RFID reader 12, and the image obtained by the camera mechanism 11 can be displayed in real time through the display screen of the terminal 13.

[0047] Working principle: In actual application, the radiation detector 10 is used to detect the radiation amount of the environment, so that the operator can better adjust the length of the telescopic rod through the radiation amount, so as to ensure that the personnel are in a relatively safe environment. The camera mechanism (camera) is used to provide video images during the clamping process, so that the operator can clearly observe the situation inside the source tank body at a relatively long distance, facilitating the operator to perform the picking operation. The terminal is used as a display mechanism to display the detection results of the radiation detector, and simultaneously display the video images obtained by the camera mechanism. Since the connection relationship with other components and the display mode are prior art, they will not be described here.

[0048] As shown in Figure 2 In actual application, the process of using the sealed radioactive source picker to transfer the radioactive source includes:

[0049] Step one, radioactive source identity recognition, this step refers to verifying whether the radioactive source to be taken out is the target source needed through the electronic tag, and the process is as follows:

[0050] 1) Turn on the power supply to ensure that the electromagnet, radiation detector, display screen, RFID reader and camera are powered on and can work normally.

[0051] 2) Electronic tag readout, gradually approach the radioactive source storage tank body with the handheld radioactive source picker until the electronic tag on the outer surface is read by the RFID reader.

[0052] 3) Radioactive source identity recognition, observe the readout value of the RFID reader on the display screen, find the target radioactive source, and open the storage tank cover.

[0053] Step two, take the radioactive source, this step refers to taking out the temporarily stored or used radioactive source from the storage tank or nuclear instrument, and the process is as follows:

[0054] 1) Determine the length of the telescopic rod

[0055] Observe the radiation dose rate value on the display screen, and select a certain radiation dose rate and telescopic rod length under the condition of protecting the radiation safety of the operator (distance protection) and improving the source taking efficiency (time protection).

[0056] 2) Determine the position of the radioactive source

[0057] To ensure that the electromagnet can accurately attract the radioactive source, the operator needs to observe the image collected by the camera on the display screen to determine the position of the radioactive source in the source storage tank or nuclear instrument, so as to avoid radiation injury caused by observing the radioactive source at a short direct distance.

[0058] 3) Take out the radioactive source

[0059] Under the guidance of the camera, the electromagnet attracts the radioactive source and removes it from the source storage tank or nuclear instrument.

[0060] Step three, radioactive source storage, which refers to the storage of the radioactive source ready for use or already used in the nuclear instrument or source storage tank. The process is the same as taking out the radioactive source.

[0061] The above solutions are only a description of a preferred example, but are not limited thereto. In the implementation of the present application, appropriate replacement and / or modification can be made according to the needs of the user.

[0062] The number of devices and the scale of processing described herein are used to simplify the description of the present application. The application, modification and change of the present application are obvious to those skilled in the art.

[0063] Although the embodiments of the present application have been disclosed as above, it is not limited to the application and implementation listed in the specification. It can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized. Therefore, the present application is not limited to specific details and examples shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A sealed radioactive source pick-up comprising an extension arm, a pick-up assembly fixed to the front end of the extension arm, characterized in that, The telescopic rod and the pickup assembly are in a predetermined angle in space, so that the pickup assembly is in contact with the surface of the sealed radioactive source to be picked up; The pickup assembly is configured to include a slope rod and an electromagnet arranged on the slope rod, and the telescopic rod is provided with a charging power source electrically connected with the electromagnet; The surface of the sealed radioactive source to be picked up is provided with an iron sheet matched with the electromagnet.

2. The sealed radioactive source pickup of claim 1, wherein, A handle is further arranged at the free end of the telescopic rod; The handle has a hollow cavity inside, and the charging power source is arranged in the cavity; A switch is arranged on the handle to switch the on-off state of the communication circuit of the electromagnet and the charging power source.

3. The sealed radioactive source pickup of claim 1, wherein, A radiation detector is further arranged on the telescopic rod and close to the handle side; A terminal is arranged on the telescopic rod or the radiation detector and is in communication connection with the radiation detector.

4. The sealed radioactive source pickup of claim 1, wherein, A camera mechanism and an RFID reader are further arranged at the front end of the telescopic rod and are electrically connected with the charging power source; An electronic tag matched with the RFID reader is arranged on the source storage tank of the sealed radioactive source; The camera mechanism and the RFID reader are in communication connection with the terminal.

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