High-precision radiation measurement device with temperature compensation

Abstract

The utility model provides a high-precision radiation measurement device with temperature compensation. The radiation measuring device is mounted outside the container and comprises a radiation generator and a detector; the detector is at least composed of an outer shell, a detection body, a temperature measurement assembly and a temperature control assembly. The outer shell is fixedly connected with the detection main body; the temperature control assembly and the temperature measurement assembly are both arranged in the detection main body and mounted around the radiation-light conversion body in the detection main body; the detection main body is provided with at least one wiring hole, so that the temperature control assembly and the temperature measurement assembly are electrically connected with a control circuit in the detection main body through the wiring hole. Self-adaptive adjustment of the radiation-light conversion temperature can be achieved through cooperation of the control circuit, the temperature measuring assembly and the temperature control assembly, the temperature is kept within the preset temperature range all the time, temperature compensation of the device is achieved, the negative influence of environment temperature changes on the characteristics of a radiation-light conversion body in the device is reduced, and the service life of the device is prolonged. The measurement error of the device is reduced, and the detection precision of the device is improved.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of industrial measurement, and in particular to a high-precision radiation measurement device with temperature compensation. Background Art

[0002] In the industrial field, radiation measurement devices have many advantages such as non-contact, easy loading and unloading, and stable performance, so they are widely used in complex working conditions such as high temperature, high pressure, high dust, high toxicity, strong corrosion or abrasiveness. However, in actual application, the characteristics of key measurement components in radiation measurement devices will be more or less affected by the ambient temperature and change, which will cause the measurement results of existing radiation measurement devices to be offset, and the detection accuracy needs to be improved. Utility Model Content

[0003] The embodiment of the utility model provides a high-precision radiation measurement device with temperature compensation, so as to at least reduce the negative impact of ambient temperature changes on the characteristics of key measurement components in the radiation measurement device, which is beneficial to reducing the measurement error of the radiation measurement device and improving the detection accuracy of the radiation measurement device.

[0004] The embodiment of the utility model provides a high-precision radiation measuring device with temperature compensation, the radiation measuring device is installed outside the container, and the radiation measuring device includes a radiation generator and a detector;

[0005] The detector is composed of at least an external shell, a detection body, a temperature measurement component and a temperature control component;

[0006] The external shell is fixedly connected to the detection body; the temperature control component and the temperature measuring component are both arranged inside the detection body and installed around the radiation-light converter in the detection body; at least one wiring hole is provided on the detection body, so that the temperature control component and the temperature measuring component are electrically connected to the control circuit in the detection body through the wiring hole.

[0007] Optionally, the outer shell is fixedly connected to the detection body to form a gap space;

[0008] The wires for connecting the temperature control component and the control circuit, and the wires for connecting the temperature measurement component and the control circuit are arranged in the gap space.

[0009] Optionally, a buffer and shock-absorbing component is provided in the gap space.

[0010] Optionally, a radiation source is provided inside the radiation generator, and the nuclide type of the radiation source is at least one of Na-22, Eu-152, Cs-137 and Co-60.

[0011] Optionally, the temperature control component includes at least a heating part and a cooling part;

[0012] The heating unit is at least used to increase the temperature of the radiation-light conversion body when the temperature measuring component detects that the temperature of the radiation-light conversion body is lower than a preset temperature range;

[0013] The cooling unit is at least used to reduce the temperature of the radiation-light conversion body when the temperature measuring component detects that the temperature of the radiation-light conversion body exceeds the preset temperature range.

[0014] Optionally, the temperature measuring component and / or the temperature controlling component is arranged in contact with the radiation-light conversion body.

[0015] Optionally, the temperature measuring component and the temperature controlling component are both arranged in non-contact with the radiation-light conversion body.

[0016] Optionally, the radiation measuring device further comprises a mounting bracket;

[0017] The mounting bracket is used to be inserted into the outer wall of the container so as to mount the radiation generator and the detector outside the container and to carry the radiation generator and the detector.

[0018] Optionally, the mounting bracket comprises at least a first main body, a second main body, a first connecting member, a second connecting member and a fixing plate;

[0019] The first body and the second body are arranged opposite to each other;

[0020] The first connecting member connects the first end of the first body to the first end of the second body, and the second connecting member connects the second end of the first body to the second end of the second body, so that the first body and the second body are inserted into the outer wall of the container;

[0021] The radiation generator is fixed on the first body;

[0022] The number of the fixing plates is greater than or equal to the number of the detectors;

[0023] The fixing plate is arranged on the first main body, and the detector is fixed on a side of the fixing plate close to the container.

[0024] Optionally, when the nuclide type of the radiation source inside the radiation generator is Eu-152, the activity range of the radiation source is less than 1*10 6 Bq.

[0025] According to the technical solution provided by the embodiment of the utility model, during the operation of the radiation measuring device, the control circuit can measure the temperature of the radiation-light converter in real time through a temperature measuring component arranged inside the detection body and installed around the radiation-light converter; when the temperature of the radiation-light converter is higher than a preset temperature range, the control circuit can send a temperature reduction instruction to a temperature control component arranged inside the detection body and installed around the radiation-light converter to reduce the temperature of the radiation-light converter; on the contrary, if the temperature of the radiation-light converter is lower than the preset temperature range, the control circuit can also send a temperature increase instruction to the temperature control component to increase the temperature of the radiation-light converter, so as to ultimately keep the temperature of the radiation-light converter within the preset temperature range.

[0026] It can be seen that in the actual application of the radiation measuring device, even if the characteristics of the radiation-light converter are affected by the ambient temperature and offset, the embodiment of the utility model can also realize adaptive adjustment of the temperature of the radiation-light converter through the coordinated cooperation of the control circuit, the temperature measuring component and the temperature control component, so that the temperature of the radiation-light converter is always maintained within the preset temperature range, thereby realizing temperature compensation of the radiation measuring device, reducing the negative impact of ambient temperature changes on the characteristics of the radiation-light converter in the radiation measuring device, and helping to reduce the measurement error of the radiation measuring device and improve the detection accuracy of the radiation measuring device.

[0027] 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

[0028] 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.

[0029] Figure 1 It is a structural schematic diagram of a high-precision radiation measurement device with temperature compensation provided by an embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of a detector provided by an embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of another high-precision radiation measurement device with temperature compensation provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] Figure 1 Schematic diagram of a high-precision radiation measurement device with temperature compensation provided by an embodiment of the utility model. Figure 2 Schematic diagram of the structure of a detector provided by an embodiment of the utility model. Figure 1 and Figure 2 As shown, the radiation measuring device 20 is installed in the container ( Figure 1 and Figure 2 The radiation measuring device 20 includes a radiation generator 201 and a detector 202 (not shown in the figure); the detector 202 is composed of at least an external shell 202a, a detection body 202b, a temperature measuring component 202c and a temperature control component 202d; the external shell 202a is fixedly connected to the detection body 202b; the temperature control component 202d and the temperature measuring component 202c are both arranged inside the detection body 202b and installed around the radiation-light converter A in the detection body 202b; the detection body 202b is provided with at least one wiring hole, so that the temperature control component 202d and the temperature measuring component 202c are electrically connected to the control circuit E in the detection body 202b through the wiring hole.

[0035] Among them, the container can be a tank body and a warehouse body that can carry materials, a pipeline for conveying materials, or other similar instruments or components; taking the production equipment in the industrial field as an example, the container in the embodiment of the utility model can be but is not limited to the reaction tank, material conveying pipeline and other components in the production equipment.

[0036] In one implementation of the present utility model, optionally, the temperature measuring component 202c and / or the temperature controlling component 202d are arranged in contact with the radiation-light converter A. In another implementation of the present utility model, optionally, both the temperature measuring component 202c and the temperature controlling component 202d are arranged in non-contact with the radiation-light converter A. Exemplarily, Figure 2 It is shown that the temperature measuring component 202c is in contact with the bottom of the radiation-light converter A, and the temperature control component 202d is in contact with the side of the radiation-light converter A near its bottom, which does not constitute a limitation on the embodiments of the present utility model. It can be understood that when the temperature measuring component 202c and / or the temperature control component 202d are arranged in a non-contact manner with the radiation-light converter A, the temperature measuring component 202c can, but is not limited to, perform non-contact measurement based on the infrared principle, and the temperature control component 202d can indirectly achieve temperature control of the radiation-light converter A by adjusting the ambient temperature of the radiation-light converter A.

[0037] The radiation-light converter A may be any object that can convert radiation rays into light signals, for example, a scintillator (plastic scintillator, NaI scintillator, etc.).

[0038] According to different measurement principles of the radiation measurement device 20 , the radiation generator 201 and the detector 202 may be of various types. For example, the radiation generator 201 may be a gamma ray generator, and the detector 202 may be a gamma ray detector 202 .

[0039] The material of the outer shell 202a can be stainless steel, etc., and the outer shell 202a can be but not limited to being threaded (by Figure 2 As shown by way of example, mechanical elements (such as bolts, screws, nuts, pins, rivets, and screws) are integrally connected to the detection body 202b.

[0040] The temperature measuring component 202c can be any type of temperature sensor.

[0041] There are many ways to set the wiring holes. For example, the temperature control component 202d and the temperature measuring component 202c can share the wiring holes (that is, the temperature control component 202d and the temperature measuring component 202c both pass through the first common wiring hole to pass through the detection body 202b, and pass through the second common wiring hole to pass through the detection body 202b, and finally be electrically connected to the control circuit E), or they can each use a corresponding wiring hole (such as Figure 2 As shown, the temperature control component 202d passes through the detection body 202b through the first temperature control wiring hole, and passes through the detection body 202b through the second temperature control wiring hole, and is finally electrically connected to the control circuit E; the temperature measurement component 202c passes through the detection body 202b through the first temperature measurement wiring hole, and passes through the detection body 202b through the second temperature measurement wiring hole, and is finally electrically connected to the control circuit E), which will not be repeated.

[0042] Exemplarily, the working principle of the radiation measurement device 20 to achieve temperature compensation may be specifically as follows:

[0043] During the operation of the radiation measuring device 20, the control circuit E can measure the temperature of the radiation-light converter A in real time through the temperature measuring component 202c disposed inside the detection body 202b and installed around the radiation-light converter A; when the temperature of the radiation-light converter A is higher than the preset temperature range, the control circuit E can send a cooling instruction to the temperature control component 202d disposed inside the detection body 202b and installed around the radiation-light converter A, so that the temperature of the radiation-light converter A can be reduced; on the contrary, if the temperature of the radiation-light converter A is lower than the preset temperature range, the control circuit E can also send a heating instruction to the temperature control component 202d to increase the temperature of the radiation-light converter A, so that the temperature of the radiation-light converter A is always maintained within the preset temperature range.

[0044] In one implementation of an embodiment of the utility model, optionally, the temperature control component 202d includes at least a heating part and a cooling part; the heating part is at least used to increase the temperature of the radiation-light converter A when the temperature measuring component 202c detects that the temperature of the radiation-light converter A is lower than a preset temperature range; the cooling part is at least used to lower the temperature of the radiation-light converter A when the temperature measuring component 202c detects that the temperature of the radiation-light converter A exceeds a preset temperature range.

[0045] Specifically, when the temperature of the radiation-light converter A is higher than a preset temperature range (the preset temperature range can be adaptively adjusted according to the actual application conditions of the radiation measuring device 20, for example, it can be 19°C~21°C, or it can be a single temperature value, for example, 20°C), the control circuit E can send a cooling instruction to the temperature control component 202d (the cooling instruction can be but is not limited to a level signal, for example, it can be a low level signal), and the cooling unit starts to work to reduce the temperature of the radiation-light converter A. When the temperature of the radiation-light converter A drops to the preset temperature range, the control circuit E can send a cooling instruction to the temperature control component 20 2d sends a temperature reduction stop instruction, and the cooling unit stops working; on the contrary, if the temperature of the radiation-light converter A is lower than the preset temperature range, the control circuit E can also send a temperature increase instruction to the temperature control component 202d (the temperature reduction instruction can also use a level signal, for example, it can be a high level signal), and the heating unit starts working to increase the temperature of the radiation-light converter A. When the temperature of the radiation-light converter A rises to the preset temperature range, the control circuit E can send a temperature increase stop instruction to the temperature control component 202d, and the heating unit stops working; this setting can make the temperature of the radiation-light converter A basically maintained within the preset temperature range.

[0046] To sum up, in the actual application of the radiation measuring device, even if the characteristics of the radiation-light converter are affected by the ambient temperature and offset, the embodiment of the utility model can realize adaptive adjustment of the temperature of the radiation-light converter through the coordinated cooperation of the control circuit, the temperature measuring component and the temperature control component, so that the temperature of the radiation-light converter is always maintained within the preset temperature range, thereby realizing temperature compensation of the radiation measuring device, reducing the negative impact of ambient temperature changes on the characteristics of the radiation-light converter in the radiation measuring device, and helping to reduce the measurement error of the radiation measuring device and improve the detection accuracy of the radiation measuring device.

[0047] It should be noted that Figure 1 The number of radiation generators and detectors is shown as one, which is not a limitation of the embodiments of the present invention. For example, in some embodiments, the radiation measurement device may include one radiation generator and multiple detectors, or may include one detector and multiple radiation generators, or may include multiple radiation generators and multiple detectors.

[0048] It should also be noted that the design concept of the temperature measuring component and the temperature control component proposed in the embodiment of the utility model is also suitable for temperature compensation of other key measuring components in the detector except the radiation-light converter, which is beneficial to further reduce the measurement error of the radiation measuring device and improve the detection accuracy of the radiation measuring device.

[0049] In an implementation manner provided in the present utility model embodiment, continue to refer to Figure 2 Optionally, the outer shell 202a and the detection body 202b are fixedly connected to form a gap space; the wire B connecting the temperature control component 202d and the control circuit E, and the wire C connecting the temperature measuring component 202c and the control circuit E are arranged in the gap space.

[0050] In another implementation provided by the embodiment of the utility model, optionally, a buffer shock absorbing component D is provided in the gap space. The buffer shock absorbing component D may be, but is not limited to, rubber, foam plastic, air cushion film, etc. It can be seen that the embodiment of the utility model can alleviate the impact of the on-site vibration conditions on the measurement of the radiation measurement device during actual application by providing the buffer shock absorbing component D, which is beneficial to further reduce the measurement error of the radiation measurement device and improve the detection accuracy of the radiation measurement device. It should be noted that Figure 2 Only a part of the disposition of the buffer shock absorbing assembly D is shown by way of example; in some embodiments, the buffer shock absorbing assembly D may also be provided in the gap space enclosed by the side of the detection body 202b and the side of the external shell 202a.

[0051] In another implementation manner provided by the embodiment of the present utility model, optionally, the outer shell is formed at least by one-piece processing or segmented welding.

[0052] In another implementation manner provided by an embodiment of the present invention, optionally, a radiation source is provided inside the radiation generator, and the nuclide type of the radiation source is at least Na-22.

[0053] In another embodiment of the present invention, optionally, a radiation source is provided inside the radiation generator, and the nuclide type of the radiation source is at least Eu-152; when the nuclide type of the radiation source inside the radiation generator is Eu-152, the activity range of the radiation source is less than 1*10 6 Bq.

[0054] In another implementation manner provided by an embodiment of the present invention, optionally, a radiation source is provided inside the radiation generator, and the nuclide type of the radiation source is at least Cs-137.

[0055] In another implementation manner provided by the embodiment of the present utility model, optionally, a radiation source is provided inside the radiation generator, and the nuclide type of the radiation source is at least Co-60.

[0056] It should be noted that, in addition to the nuclide types of the radiation source provided in the above embodiments, the radiation source in the embodiment of the utility model 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.

[0057] Based on the above embodiments or implementation modes, Figure 3 is a schematic diagram of the structure of another high-precision radiation measurement device with temperature compensation provided by an embodiment of the utility model. Figure 3As shown, 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 outside the container 203 and carry the radiation generator 201 and the detector 202 .

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] It should be noted that Figure 3The 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.

[0064] 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.

[0065] 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 high-precision radiation measurement device with temperature compensation, It is characterized in that The radiation measuring device is installed outside the container, and the radiation measuring device includes a radiation generator and a detector; The detector is composed of at least an external shell, a detection body, a temperature measurement component and a temperature control component; The external shell is fixedly connected to the detection body; the temperature control component and the temperature measuring component are both arranged inside the detection body and installed around the radiation-light converter in the detection body; at least one wiring hole is provided on the detection body, so that the temperature control component and the temperature measuring component are electrically connected to the control circuit in the detection body through the wiring hole.

2. The high-precision radiation measuring device with temperature compensation according to claim 1, It is characterized in that The outer shell and the detection body are fixedly connected to form a gap space; The wires for connecting the temperature control component and the control circuit, and the wires for connecting the temperature measurement component and the control circuit are arranged in the gap space.

3. The high-precision radiation measuring device with temperature compensation according to claim 2, It is characterized in that A buffer and shock-absorbing component is arranged in the gap space.

4. The high-precision radiation measuring device with temperature compensation according to claim 1, It is characterized in that A radiation source is arranged inside the radiation generator, and the nuclide type of the radiation source is at least one of Na-22, Eu-152, Cs-137 and Co-60.

5. The high-precision radiation measuring device with temperature compensation according to claim 1, It is characterized in that The temperature control component at least includes a heating part and a cooling part; The heating unit is at least used to increase the temperature of the radiation-light conversion body when the temperature measuring component detects that the temperature of the radiation-light conversion body is lower than a preset temperature range; The cooling unit is at least used to reduce the temperature of the radiation-light conversion body when the temperature measuring component detects that the temperature of the radiation-light conversion body exceeds the preset temperature range.

6. The high-precision radiation measuring device with temperature compensation according to claim 1, It is characterized in that The temperature measuring component and / or the temperature controlling component are arranged in contact with the radiation-light conversion body.

7. The high-precision radiation measuring device with temperature compensation according to claim 1, It is characterized in that The temperature measuring component and the temperature controlling component are both arranged in non-contact with the radiation-light conversion body.

8. The high-precision radiation measuring device with temperature compensation according to claim 1, It is characterized in that The radiation measurement device also includes a mounting bracket; The mounting bracket is used to be inserted into the outer wall of the container so as to mount the radiation generator and the detector outside the container and to carry the radiation generator and the detector.

9. The high-precision radiation measuring device with temperature compensation according to claim 8, It is characterized in that The mounting bracket at least comprises a first main body, a second main body, a first connecting member, a second connecting member and a fixing plate; The first body and the second body are arranged opposite to each other; The first connecting member connects the first end of the first body to the first end of the second body, and the second connecting member connects the second end of the first body to the second end of the second body, so that the first body and the second body are inserted into the outer wall of the container; The radiation generator is fixed on the first body; The number of the fixing plates is greater than or equal to the number of the detectors; The fixing plate is arranged on the first main body, and the detector is fixed on a side of the fixing plate close to the container.

10. The high-precision radiation measuring device with temperature compensation according to claim 1, It is characterized in that When the nuclide type of the radiation source inside the radiation generator is Eu-152, the activity range of the radiation source is less than 1*10 6 Bq.

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