Radiation generator with switch locking function and radiation measuring device

Abstract

The utility model provides a radiation generator with a switch locking function and a radiation measuring device. The radiation generator comprises an outer shell, a rotary switch structure and a radiation source; a main body of the rotary switch structure is rotatably arranged in the outer shell, and one end of the rotary switch structure penetrates out of the outer shell; the rotary switch structure is provided with a source bearing hole, and the radiation source is fixed in the source bearing hole; the external shell is provided with a radiation hole; when the switch structure is rotated to drive the radiation source to rotate to a preset angle range, the radiation generator is in an open state, and the radiation source emits radiation beams through the radiation holes. In the actual application process, if the container is in a non-working state without radiation detection such as shutdown, production halt, maintenance and repair, the radiation source can be driven to rotate away from the preset angle range by adjusting the rotary switch structure, the radiation generator is closed, radiation pollution of the radiation source to the surrounding environment is reduced, unnecessary outward radiation is avoided, and the radiation detection efficiency is improved. And the radiation quantity received by field operators is reduced.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of industrial measurement, and in particular to a radiation generator and a radiation measurement device with a switch locking function. Background Art

[0002] In the industrial field, radiation measuring devices have many advantages such as non-contact, easy loading and unloading, and stable performance. Therefore, they are widely used in complex working conditions such as high temperature, high pressure, high dust, high toxicity, strong corrosion or abrasiveness. However, existing radiation measuring devices often do not have a switch function. This means that in actual applications, even if the container is in a non-working state such as shutdown, maintenance and overhaul, where it is not required to perform detection, the device itself will continue to radiate measurement signals. In this process, existing radiation measuring devices will not only waste their own radiation resources, but may also cause radiation pollution to the surrounding environment; at the same time, if the on-site personnel do not take adequate radiation protection measures or their protective clothing is damaged during the maintenance and overhaul of the container, they may also receive a large amount of radiation. Utility Model Content

[0003] The embodiments of the utility model provide a radiation generator and a radiation measuring device with a switch locking function, so as to reduce the radiation pollution of the surrounding environment by the radiation source, avoid unnecessary outward radiation, and reduce the amount of radiation received by on-site workers, at least when the container is in a non-working state such as shutdown, maintenance and overhaul where it is not necessary to perform detection.

[0004] In a first aspect, an embodiment of the utility model provides a radiation generator with a switch locking function, comprising an external housing, a rotary switch structure and a radiation source;

[0005] The main body of the rotary switch structure is rotatably arranged inside the external shell, and one end of the rotary switch structure passes through the external shell; the rotary switch structure has a source-bearing hole, and the radiation source is fixed in the source-bearing hole; the external shell is provided with a radiation hole; when and only when the rotary switch structure drives the radiation source to rotate to a preset angle range, the radiation generator is in an open state, and the radiation source only emits a radiation beam through the radiation hole.

[0006] Optionally, including a fastener;

[0007] After the radiation source is installed in the source-bearing hole, the fastener is installed in the source-bearing hole and connected to the inner wall of the source-bearing hole to fix the radiation source in the source-bearing hole.

[0008] Optionally, when the radiation generator is in the open state, the projection of the source-bearing hole in a preset direction is included in the projection of the radiation hole in the preset direction;

[0009] The preset direction refers to the axial direction of the source hole or the radiation hole.

[0010] Optionally, a sealing mechanism is provided between one end of the rotary switch structure passing through the external shell and the external shell; and the sealing mechanism is provided between the fastener and the source hole.

[0011] Optionally, the nuclide type of the radiation source is at least one of Na-22, Eu-152, Cs-137 and Co-60.

[0012] Optionally, including a switch handle;

[0013] The switch handle is fixedly connected to one end of the rotary switch structure passing through the external shell; a first locking hole is provided at one end of the switch handle away from the rotary switch structure; and a state pointing portion is provided at one end of the switch handle close to the rotary switch structure.

[0014] Optionally, the end of the outer shell close to the switch handle is provided with at least an open state locking hole, a closed state locking hole, an open state indicating mark and a closed state indicating mark;

[0015] When the first locking hole is aligned with the open state locking hole, the state pointing portion points to the open state indication mark, and the radiation generator is in the open state;

[0016] When the first locking hole is aligned with the closed state locking hole, the state pointing portion points to the closed state indication mark, and the radiation generator is in the closed state.

[0017] Optionally, comprising a locking member;

[0018] The locking member is used at least to fix the switch handle and the external shell so that the radiation generator remains in the open state when the first locking hole is aligned with the open state locking hole; or to fix the switch handle and the external shell so that the radiation generator remains in the closed state when the first locking hole is aligned with the closed state locking hole.

[0019] Optionally, comprising a source changing unit;

[0020] The outer shell is provided with a source-changing hole;

[0021] The source changing part is fixedly connected to the external shell and blocks the source changing hole.

[0022] Optionally, when the radiation generator needs to replace the radiation source, the source receiving hole rotates to the source changing hole, and the projection of the source receiving hole in a set direction is included in the projection of the source changing hole in the set direction;

[0023] The set direction refers to the axial direction of the source receiving hole or the source changing hole.

[0024] Optionally, when the rotary switch structure drives the radiation source to rotate to the preset angle range, the radiation beams emitted by the radiation source in directions other than the direction where the radiation hole is located are blocked;

[0025] When the rotary switch structure drives the radiation source to rotate away from the preset angle range, the radiation beam emitted by the radiation source in any direction is blocked.

[0026] Optionally, in order to block the meaningless radiation beams released by the radiation source, the thickness of the external shell, the source exchange part and the fastener is greater than a preset thickness, or the external shell, the source exchange part and the fastener are made of radiation shielding material, or the external shell, the source exchange part and the fastener are wrapped with radiation shielding material.

[0027] Optionally, a structural cavity is formed inside the rotary switch structure;

[0028] In order to block the meaningless radiation beams released by the radiation source; the structural cavity is arranged around the component inside the rotating switch structure with the source-bearing hole, and a shielding layer is provided in the structural cavity; and in the process of the rotating switch structure driving the radiation source to rotate, the thickness of the source-changing part, the fastener and the external shell of the area that the radiation source can radiate is greater than the preset thickness, or the source-changing part, the fastener and the external shell of the area that the radiation source can radiate are made of radiation shielding material, or the source-changing part, the fastener and the external shell of the area that the radiation source can radiate are wrapped by radiation shielding material.

[0029] Optionally, a structural cavity is formed inside the rotary switch structure;

[0030] In order to block the meaningless radiation beams released by the radiation source; the structural cavity is arranged around the component inside the rotary switch structure with the source-bearing hole, and a shielding layer is provided in the structural cavity; a shielding layer is also provided between the fastener and the radiation source; and in the process of the rotary switch structure driving the radiation source to rotate, the thickness of the external shell of the source changing part and the area that the radiation source can radiate is greater than the preset thickness, or the external shell of the source changing part and the area that the radiation source can radiate is made of radiation shielding material, or the external shell of the source changing part and the area that the radiation source can radiate is wrapped by radiation shielding material.

[0031] Optionally, in order to block the meaningless radiation beams released by the radiation source, a shielding layer is provided in the space enclosed by the external shell, the rotary switch structure and the source changing part; and a shielding layer is also provided between the fastener and the radiation source, or the thickness of the fastener is greater than a preset thickness, or the fastener is made of radiation shielding material, or the fastener is wrapped by radiation shielding material.

[0032] Optionally, when the nuclide type of the radiation source is Eu-152 or Na-22, the activity range of the radiation source is less than 1*10 6 Bq.

[0033] In a second aspect, an embodiment of the utility model further provides a radiation measuring device, the radiation measuring device is installed outside the container, and the radiation measuring device at least includes a detector and the radiation generator described in any one of the first aspects;

[0034] The detector is used, at least when the radiation generator is in the on state, to receive the attenuated beam formed after the radiation beam passes through the radiation path, so as to analyze the information of the medium in the container.

[0035] The technical solution provided by the embodiment of the utility model is that the main body of the rotary switch structure is rotatably arranged inside the external shell, and the radiation source is fixed in the source bearing hole of the rotary switch structure, so the rotary switch structure will drive the radiation source to rotate synchronously during the rotation process. When and only when the rotary switch structure drives the radiation source to rotate to the preset angle range, the radiation source is aligned with the radiation hole on the external shell and can only emit radiation beams to the outside through the radiation hole. At this time, the radiation generator is in an open state; on the contrary, when the rotary switch structure drives the radiation source to rotate away from the preset angle range, the radiation source is no longer aligned with the radiation hole and cannot emit radiation beams to the outside, and the radiation generator is correspondingly turned to a closed state. It can be seen that in the actual application of the radiation generator, if the container is in a non-working state where no radiation detection is required, such as shutdown, maintenance and repair, the on-site personnel can drive the radiation source to rotate away from the preset angle range by adjusting the rotary switch structure, and turn off the radiation generator, thereby reducing the radiation pollution of the radiation source to the surrounding environment, avoiding unnecessary outward radiation, and reducing the amount of radiation received by the on-site operators.

[0036] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a structural schematic diagram of a radiation generator with a switch locking function provided by an embodiment of the utility model;

[0039] Figure 2 It is a schematic structural cross-sectional diagram of a radiation generator with a switch locking function provided by an embodiment of the utility model;

[0040] Figure 3 It is a structural schematic diagram of a radiation measurement device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] Figure 1 is a schematic structural diagram of a radiation generator with a switch locking function provided by an embodiment of the utility model, Figure 2 Schematic diagram of the cross-section of a radiation generator with a switch locking function provided by an embodiment of the utility model. Figure 1 and Figure 2The radiation generator 201 includes an external shell 201A, a rotary switch structure 201B and a radiation source 201C; the main body of the rotary switch structure 201B is rotatably arranged inside the external shell 201A, and one end of the rotary switch structure 201B passes through the external shell 201A; the rotary switch structure 201B has a source-bearing hole, and the radiation source 201C is fixed in the source-bearing hole; the external shell 201A is provided with a radiation hole; when and only when the rotary switch structure 201B drives the radiation source 201C to rotate to a preset angle range, the radiation generator 201 is in an open state, and the radiation source 201C only emits a radiation beam through the radiation hole.

[0044] The material of the external housing 201A and the rotary switch structure 201B may be, for example, stainless steel, leaded stainless steel, etc.

[0045] There are many ways in which the main body of the rotary switch structure 201B can be rotatably disposed inside the outer housing 201A. Figure 1 It is exemplified that the main body of the rotary switch structure 201B can be horizontally rotatable around the axis (in the vertical direction) at one end of the rotary switch structure 201B passing through the external housing 201A. In some embodiments, the main body of the rotary switch structure 201B can also be swingably arranged around the other end away from the end passing through the external housing 201A. It can be understood that the preset angle range is related to the rotatable setting method adopted by the main body of the rotary switch structure 201B, the structure of the radiation hole, etc., and can be adaptively adjusted according to the actual application conditions of the radiation generator 201, and the embodiment of the utility model does not limit this. The preset angle range can be a specific angle, or it can be a set of angles composed of multiple continuous or discontinuous angles.

[0046] Since the main body of the rotary switch structure 201B is rotatably disposed inside the external housing 201A, and the radiation source 201C is fixed in the source bearing hole of the rotary switch structure 201B, the rotary switch structure 201B will drive the radiation source 201C to rotate synchronously during the rotation process. When and only when the rotary switch structure 201B drives the radiation source 201C to rotate to the preset angle range, the radiation source 201C is aligned with the radiation hole on the external housing 201A and can only emit radiation beams to the outside through the radiation hole, at this time, the radiation generator 201 is in the open state; on the contrary, when the rotary switch structure 201B drives the radiation source 201C to rotate away from the preset angle range, the radiation source 201C is no longer aligned with the radiation hole and cannot emit radiation beams to the outside, and the radiation generator 201 is correspondingly turned to the closed state.

[0047] To sum up, in the actual application of the radiation generator, if the container is in a non-working state such as shutdown, maintenance and overhaul where radiation detection is not required, on-site personnel can adjust the rotary switch structure to drive the radiation source to rotate away from the preset angle range and turn off the radiation generator, thereby reducing the radiation pollution of the surrounding environment by the radiation source, avoiding unnecessary outward radiation, and reducing the amount of radiation received by on-site workers.

[0048] On the basis of the above embodiment, optionally, the nuclide type of the radiation source is at least one of Na-22, Eu-152, Cs-137 and Co-60; when the nuclide type of the radiation source is Eu-152 or Na-22, the activity range of the radiation source is less than 1*10 6 Bq.

[0049] It can be understood that in addition to the nuclide types of the radiation source provided in the above embodiments of the present invention, in other embodiments, the radiation source can also be at least Am-241, Am-241 / Be, Au-198, Ba-133, C-14, Cd-109, Ce-141, Ce-144, Cf-252, Cl-36, Cm-242, Cm-244, Co-57, Cr-51, Cs-134, Eu-154, Fe-55, Gd-153, Ge-68, H-3, Hg-203, I-125, I-131, Ir-192, Kr-85, Mo-99, Nb-95, Ni-63, Np-237 (Pa-233), P-32, Pd-103, Pm-147, Po-210, Pu-238, Pu-239 / Be, Pu -239, Pu-240, Pu-242, Ra-226, Re-188, Ru-103 (Rh-103m), Ru-106 (Rh-106), S-35, Se-75, Sr-89, Sr-90 (Y-90), Tc-99 m , Te-132 (I-132), Th-230, Tl-204, Tm-170, Y-90, Y-91, Yb-169, Zn-65, Zr-95 and other nuclides.

[0050] Based on the above embodiment, optionally, when the radiation generator is in an open state, the projection of the source hole in a preset direction is included in the projection of the radiation hole in a preset direction; wherein the preset direction refers to the axial direction of the source hole or the radiation hole.

[0051] Based on the above embodiments, continue to refer to Figure 1 and Figure 2, optionally, includes a fastener 201D; after the radiation source 201C is installed into the source hole, the fastener 201D is installed into the source hole and connected to the inner wall of the source hole to fix the radiation source 201C in the source hole.

[0052] Optionally, a sealing mechanism 201E is provided between one end of the rotary switch structure 201B passing through the external shell 201A and the external shell 201A; a sealing mechanism 201E is provided between the fastener 201D and the source hole.

[0053] Optionally, the switch handle 201F is included; the switch handle 201F is fixedly connected to one end of the rotary switch structure 201B that passes through the outer shell 201A; the end of the switch handle 201F away from the rotary switch structure 201B is provided with a first locking hole; the end of the switch handle 201F close to the rotary switch structure 201B is provided with a state pointing portion (for example Figure 1 triangular tip shown in ).

[0054] Optionally, the end of the outer housing 201A close to the switch handle 201F is provided with at least an open state locking hole, a closed state locking hole, and an open state indicating mark (for example Figure 1 "ON" mark in the figure) and the off state indicator mark (for example Figure 1 "OFF" mark in the middle); when the first locking hole is aligned with the open state locking hole (such as Figure 1 As shown), the state pointing portion points to the open state indication mark, and the radiation generator 201 is in the open state; when the first locking hole is aligned with the closed state locking hole, the state pointing portion points to the closed state indication mark, and the radiation generator 201 is in the closed state.

[0055] Optionally, a locking member is included; the locking member is at least used when the first locking hole is aligned with the locking hole in the open state (see Figure 1 ), fix the switch handle 201F and the outer shell 201A to keep the radiation generator 201 in the open state; or, when the first locking hole is aligned with the closed state locking hole, fix the switch handle 201F and the outer shell 201A to keep the radiation generator 201 in the closed state.

[0056] Optionally, it further includes a source changing part 201G; the external shell 201A is provided with a source changing hole; the source changing part 201G is fixedly connected to the external shell 201A and blocks the source changing hole.

[0057] Optionally, when the radiation generator 201 needs to replace the radiation source 201C, the source-receiving hole rotates to the source-changing hole, and the projection of the source-receiving hole in the set direction is included in the projection of the source-changing hole in the set direction; wherein the set direction refers to the axial direction of the source-receiving hole or the source-changing hole.

[0058] Optionally, when the rotary switch structure 201B drives the radiation source 201C to rotate to a preset angle range, the radiation beams emitted by the radiation source 201C in directions other than the direction of the radiation hole are blocked; when the rotary switch structure 201B drives the radiation source 201C to rotate away from the preset angle range, the radiation beams emitted by the radiation source 201C in any direction are blocked.

[0059] The fastener 201D may be a bolt, a jackscrew, etc. The fastener 201D may be connected to the inner wall of the bearing hole at least through a thread.

[0060] In some embodiments, the area where the source hole contacts the radiation source 201C and the area where the fastener 201D contacts the radiation source 201C may be provided with buffering and shock-absorbing components such as rubber, foam plastic, and air cushion film to alleviate the adverse effects of on-site vibration conditions on the radiation generator 201 during actual application, which helps to reduce radiation measurement errors and improve radiation measurement accuracy.

[0061] It can be seen that the sealing mechanism 201E provided at one end of the rotary switch structure 201B passing through the outer shell 201A can play the role of increasing the rotation damping of the rotary switch structure 201B, smoothing the rotation process of the rotary switch structure 201B, and preventing foreign objects (such as rainwater, dust, etc.) from entering the rotary switch structure 201B. Similarly, the sealing mechanism provided by the fastener 201D can prevent foreign objects from outside the source hole from entering the inside of the source hole, maintain the steady-state working environment of the radiation source 201C, and help extend the service life of the radiation generator 201. It can be understood that the sealing mechanism 201E can include, for example, a sealing groove and a sealing member, and the sealing member can be, but is not limited to, a sealing ring.

[0062] The locking element may be a lock, such as a padlock. It can be seen that when the container is in a normal working state, the on-site personnel can adjust the rotating switch structure 201B through the switch handle 201F to align the first locking hole with the open state locking hole. At this time, the radiation generator 201 is in an open state, and the state pointing portion will point to the open state indication mark. The on-site personnel use the locking piece to connect the switch handle 201F and the external shell 201A together, so that the radiation generator 201 can be kept in an open state, and the radiation source emits a radiation beam through the radiation hole. Except for the direction where the radiation hole is located, the radiation beams emitted by the radiation source in other directions are blocked; when the container is in a non-working state, the on-site personnel can adjust the rotating switch structure 201B through the switch handle 201F again to align the first locking hole with the closed state locking hole. At this time, the radiation generator 201 is in a closed state, and the state pointing portion points to the closed state indication mark. The on-site personnel use the locking piece to connect the switch handle 201F and the external shell 201A together, so that the radiation generator 201 can be kept in a closed state, and the radiation beams emitted by the radiation source in any direction are blocked. Obviously, such a configuration as in the embodiment of the utility model can effectively prevent the radiation generator 201 from malfunctioning (especially under strong vibration conditions or during manual operation), which is beneficial to maintaining the working environment of on-site personnel.

[0063] There may be many forms of fixed connection between the source changing part 201G and the external shell 201A, such as nailing, riveting, threading, etc. In practical applications, the radiation source 201C in the radiation generator 201 is replaceable; for example, the on-site personnel can record the installation and use time of the radiation source 201C, and replace the radiation source 201C regularly in combination with the radiation characteristics of the radiation source 201C. When replacing the radiation source 201C, the on-site personnel can adjust the rotary switch structure 201B through the switch handle 201F so that the radiation hole and the source changing hole are aligned, and then remove the source changing part 201G and the fastener 201D to replace the radiation source 201C. Of course, the structure of the source changing part 201G and / or the fastener 201D can be designed as a non-standard part according to the needs of the site to prevent the radiation source 201C from being illegally stolen.

[0064] It should be noted that, in order to block meaningless radiation beams (ie, radiation beams not for measurement) released by the radiation source, the embodiments of the present utility model exemplarily provide the following various implementable methods of the radiation generator.

[0065] In a specific embodiment, in order to block the meaningless radiation beams released by the radiation source, the thickness of the outer shell, the source exchange part and the fasteners is greater than the preset thickness, or the outer shell, the source exchange part and the fasteners are made of radiation shielding material, or the outer shell, the source exchange part and the fasteners are wrapped with radiation shielding material.

[0066] In another specific embodiment, optionally, a structural cavity is formed inside the rotary switch structure; in order to block meaningless radiation beams released by the radiation source, the structural cavity is arranged around a component with a source-bearing hole inside the rotary switch structure, and a shielding layer is provided in the structural cavity; and in the process of the rotary switch structure driving the radiation source to rotate, the thickness of the external shell of the source changing part, the fastener and the area that the radiation source can radiate is greater than a preset thickness, or the source changing part, the fastener and the area that the radiation source can radiate are made of radiation shielding material, or the source changing part, the fastener and the area that the radiation source can radiate are wrapped by radiation shielding material.

[0067] In another specific embodiment, optionally, a structural cavity is formed inside the rotary switch structure; in order to block meaningless radiation beams released by the radiation source; the structural cavity is arranged around a component with a source-bearing hole inside the rotary switch structure, and a shielding layer is provided in the structural cavity; a shielding layer is also provided between the fastener and the radiation source; and in the process of the rotary switch structure driving the radiation source to rotate, the thickness of the external shell of the source changing part and the area that the radiation source can radiate is greater than a preset thickness, or the external shell of the source changing part and the area that the radiation source can radiate is made of radiation shielding material, or the external shell of the source changing part and the area that the radiation source can radiate is wrapped by radiation shielding material.

[0068] In another specific embodiment, optionally, in order to block meaningless radiation beams released by the radiation source, a shielding layer is provided in the space enclosed by the external shell (except the radiation hole), the rotary switch structure and the source changing part; and a shielding layer is also provided between the fastener and the radiation source, or the thickness of the fastener is greater than a preset thickness, or the fastener is made of radiation shielding material, or the fastener is wrapped by radiation shielding material.

[0069] In the above embodiments, the material of the shielding layer and the radiation shielding material can be heavy metals, such as lead. The preset thickness is related to the specific material of each component, and the embodiment of the utility model does not limit this.

[0070] Based on the above embodiments, Figure 3 is a schematic diagram of the structure of a radiation measurement device provided by an embodiment of the utility model, such as Figure 3 As shown, the radiation measuring device is installed on the outside of the container 203, and the radiation measuring device includes at least a detector 202 and the radiation generator 201 described in the above embodiment; the detector 202 is at least used to receive the attenuated beam formed after the radiation beam passes through the radiation path when the radiation generator 201 is in an open state, so as to analyze the information of the medium in the container 203.

[0071] The radiation path refers to the path that the radiation beam passes through from the radiation generator 201 to the detector 202. When the radiation beam passes through the radiation path, the container 203 and the medium on the radiation path will cause the radiation beam to be attenuated. Based on this attenuation effect, the detector 202 can parse parameter information of the medium in the container 203, such as density, filling degree, etc.

[0072] In some embodiments, optionally, the radiation measuring device further includes a mounting bracket, which is used to be clamped on the outer wall of the container 203 to mount the radiation generator 201 and the detector 202 on the outside of the container 203 and to support the radiation generator 201 and the detector 202 .

[0073] Optionally, the mounting bracket includes at least a first body 206, a second body 207, a first connecting piece 208, a second connecting piece 209 and a fixing plate 210; the first body 206 and the second body 207 are arranged opposite each other; the first connecting piece 208 connects the first end of the first body 206 and the first end of the second body 207 together, and the second connecting piece 209 connects the second end of the first body 206 and the second end of the second body 207 together, so that the first body 206 and the second body 207 are clamped on the outer wall of the container 203; the radiation generator 201 is fixed on the first body 206; the number of fixing plates 210 is greater than or equal to the number of detectors 202; the fixing plate 210 is arranged on the first body 206, and the detector 202 is fixed on the side of the fixing plate 210 close to the container 203.

[0074] The first body 206 and the second body 207 may be I-beams; the first connecting member 208 and the second connecting member 209 may include screws and nuts; and the fixing plate 210 may be disposed on the first body 206 by welding.

[0075] Continue to see Figure 3 The container 203 can be a cylindrical pipe, and the first body 206 and the second body 207 both include an arc portion, and the characteristic parameters of the arc portion are consistent with the characteristic parameters of the outer wall of the container 203 in contact with it. Under the action of the first connecting piece 208 and the second connecting piece 209, the arc portion of the first body 206 and the arc portion of the second body 207 are tightly attached to the outer wall of the container 203 in contact with it, so that the first body 206 and the second body 207 are clamped on the outer wall of the container 203.

[0076] It can be understood that when the number of fixing plates 210 is greater than the number of detectors 202, the fixing positions of the detectors 202 can be adaptively adjusted according to the actual working conditions of the container 203 or the actual needs of the user. The advantage of such a setting is that the arrangement of the radiation measuring device is relatively flexible, which is conducive to enhancing the practicality of the radiation measuring device.

[0077] In summary, the radiation measuring device provided in the embodiment of the utility model can be clamped on the outer wall of the container through the installation bracket, and then the radiation generator and at least two detectors are installed on the outside of the container. There is no need to groove or punch holes on the container. It is easy to install, flexible in layout, highly practical, and will not affect the continuity of production.

[0078] It should be noted that Figure 3 The example shows that the detector 202 and the radiation generator 201 are both mounted on the first body 206. It is understood that in some embodiments, the detector 202 and the radiation generator 201 may be both mounted on the second body 207; or, the radiation generator 201 is mounted on the first body 206, and the detector 202 is mounted on the second body 207; or, the radiation generator 201 is mounted on the second body 207, and the detector 202 is mounted on the first body 206; and so on.

[0079] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0080] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A radiation generator with a switch locking function, characterized in that: including an outer housing, a rotary switch structure and a radiation source; The main body of the rotary switch structure is rotatably arranged inside the external housing, and one end of the rotary switch structure passes through the external housing; the rotary switch structure has a source receiving hole, and the radiation source is fixed in the source receiving hole; The outer shell is provided with a radiation hole; when and only when the rotary switch structure drives the radiation source to rotate to a preset angle range, the radiation generator is in an open state, and the radiation source only emits a radiation beam through the radiation hole.

2. The radiation generator according to claim 1, characterized in that Including fasteners; After the radiation source is installed in the source-bearing hole, the fastener is installed in the source-bearing hole and connected to the inner wall of the source-bearing hole to fix the radiation source in the source-bearing hole.

3. The radiation generator according to claim 1, characterized in that When the radiation generator is in the open state, the projection of the source-bearing hole in the preset direction is included in the projection of the radiation hole in the preset direction; The preset direction refers to the axial direction of the source hole or the radiation hole.

4. The radiation generator according to claim 1 or 2, characterized in that A sealing mechanism is provided between one end of the rotary switch structure passing through the external shell and the external shell; and the sealing mechanism is provided between the fastener and the source hole.

5. The radiation generator according to claim 1, characterized in that The nuclide type of the radiation source is at least one of Na-22, Eu-152, Cs-137 and Co-60.

6. The radiation generator according to claim 1, characterized in that Including a source changing unit; The outer shell is provided with a source-changing hole; The source changing part is fixedly connected to the external shell and blocks the source changing hole.

7. The radiation generator according to claim 6, characterized in that When the radiation generator needs to replace the radiation source, the source receiving hole rotates to the source changing hole, and the projection of the source receiving hole in the set direction is included in the projection of the source changing hole in the set direction; The set direction refers to the axial direction of the source receiving hole or the source changing hole.

8. The radiation generator according to claim 1, characterized in that When the rotary switch structure drives the radiation source to rotate to the preset angle range, the radiation beams emitted by the radiation source in directions other than the direction where the radiation hole is located are blocked; When the rotary switch structure drives the radiation source to rotate away from the preset angle range, the radiation beam emitted by the radiation source in any direction is blocked.

9. The radiation generator according to claim 8, characterized in that In order to block the meaningless radiation beams released by the radiation source, the thickness of the external shell, the source change part and the fastener is greater than a preset thickness, or the external shell, the source change part and the fastener are made of radiation shielding material, or the external shell, the source change part and the fastener are wrapped by radiation shielding material.

10. The radiation generator according to claim 8, characterized in that A structural cavity is formed inside the rotary switch structure; In order to block the meaningless radiation beams released by the radiation source; the structural cavity is arranged around the component inside the rotating switch structure with the source-bearing hole, and a shielding layer is provided in the structural cavity; and in the process of the rotating switch structure driving the radiation source to rotate, the thickness of the source-changing part, the fastener and the external shell of the area that the radiation source can radiate is greater than the preset thickness, or the source-changing part, the fastener and the external shell of the area that the radiation source can radiate are made of radiation shielding material, or the source-changing part, the fastener and the external shell of the area that the radiation source can radiate are wrapped by radiation shielding material.

11. The radiation generator according to claim 8, characterized in that A structural cavity is formed inside the rotary switch structure; In order to block the meaningless radiation beams released by the radiation source; the structural cavity is arranged around the component inside the rotary switch structure with the source-bearing hole, and a shielding layer is provided in the structural cavity; a shielding layer is also provided between the fastener and the radiation source; and in the process of the rotary switch structure driving the radiation source to rotate, the thickness of the external shell of the source changing part and the area that the radiation source can radiate is greater than the preset thickness, or the external shell of the source changing part and the area that the radiation source can radiate is made of radiation shielding material, or the external shell of the source changing part and the area that the radiation source can radiate is wrapped by radiation shielding material.

12. The radiation generator according to claim 8, characterized in that In order to block the meaningless radiation beams released by the radiation source; a shielding layer is provided in the space enclosed by the external shell, the rotary switch structure and the source changing part; and a shielding layer is also provided between the fastener and the radiation source, or the thickness of the fastener is greater than the preset thickness, or the fastener is made of radiation shielding material, or the fastener is wrapped by radiation shielding material.

13. The radiation generator according to claim 1, characterized in that When the nuclide type of the radiation source is Eu-152 or Na-22, the activity range of the radiation source is less than 1*10 6 Bq.

14. The radiation generator according to claim 1, characterized in that Including switch handle; The switch handle is fixedly connected to one end of the rotary switch structure passing through the external shell; a first locking hole is provided at one end of the switch handle away from the rotary switch structure; and a state pointing portion is provided at one end of the switch handle close to the rotary switch structure.

15. The radiation generator according to claim 14, characterized in that The end of the outer shell close to the switch handle is provided with at least an open state locking hole, a closed state locking hole, an open state indicating mark and a closed state indicating mark; When the first locking hole is aligned with the open state locking hole, the state pointing portion points to the open state indication mark, and the radiation generator is in the open state; When the first locking hole is aligned with the closed state locking hole, the state pointing portion points to the closed state indication mark, and the radiation generator is in the closed state.

16. The radiation generator according to claim 15, characterized in that including a locking member; The locking member is used to fix the switch handle and the external housing at least when the first locking hole is aligned with the open state locking hole, so that the radiation generator is kept in the open state; Alternatively, when the first locking hole is aligned with the closed-state locking hole, the switch handle and the outer housing are fixed to keep the radiation generator in the closed state.

17. A radiation measuring device, characterized in that: The radiation measuring device is installed outside the container, and the radiation measuring device comprises at least a detector and a radiation generator according to any one of claims 1 to 16; The detector is used, at least when the radiation generator is in the on state, to receive the attenuated beam formed after the radiation beam passes through the radiation path, so as to analyze the information of the medium in the container.

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