CN216013688U - Surface pollution measuring instrument - Google Patents
Surface pollution measuring instrument Download PDFInfo
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- CN216013688U CN216013688U CN202122632683.0U CN202122632683U CN216013688U CN 216013688 U CN216013688 U CN 216013688U CN 202122632683 U CN202122632683 U CN 202122632683U CN 216013688 U CN216013688 U CN 216013688U
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Abstract
The utility model relates to a surface pollution measuring instrument, which comprises a measuring instrument main body, wherein the measuring instrument main body comprises a shell and a detector arranged at the bottom of the shell; the shell is detachably connected with a telescopic rod; the shell is rotatably connected with four wheels, the diameters of all the wheels are the same, and the vertical distances between the axes and the detector are equal; the bottom of casing is seted up and is used for holding the recess of detector, but the detector is located in the recess and vertical slip, still is equipped with in the recess and is used for driving the vertical gliding elevation structure of detector. The utility model discloses set up the telescopic link on the casing and improve the use degree of difficulty of measuring apparatu, and made further improvement to the measuring apparatu on this basis, through set up the wheel on the casing, can be easily and stably keep the interval of detector and measured surface, and grip the telescopic link and make the measuring apparatu translation also become easier because of the roll of wheel on the measured surface; the operation of the measuring instrument is simpler, and the measuring accuracy is improved.
Description
Technical Field
The utility model belongs to the technical field of nuclear medicine, concretely relates to surface pollution measuring apparatu.
Background
With the rapid development of medical technology, nuclear medicine will become an indispensable part of the future basic medical system, regardless of the external radioimmunoassay used in the nuclear medicine diagnosis process, the PET/CT, SPECT/CT developed at a near stage, or the nuclear medicine treatment131I for treating hyperthyroidism,125I particle implantation, and32surface application of P, etc., all without the use of radioisotopes. The radioactive isotope is produced, transported and then subpackaged in hospitals for use, the radioactivity measurement is not required, and the measurement and control of radioactive sources and radioactive intensity are the precondition for ensuring the safety of nuclear medicine.
At present, the COMO170 type surface pollution measuring instrument is used as a standard instrument for radioactive measurement in the field of nuclear medicine, a large-area thin-layer plastic scintillator detector is adopted as a core detection unit at the bottom of the surface pollution measuring instrument, a screen is arranged at the upper part of the surface pollution measuring instrument and used for displaying measured data and related parameters in real time, and the surface pollution measuring instrument is mainly used for radioactive pollution measurement on the surface of the earth surface, the wall surface and the surface of a sub-packaging table and gives out an acousto-optic alarm prompt for radioactive pollution exceeding a standard contamination level in cooperation with a corresponding auxiliary measurement system. However, the surface contamination measuring instrument adopts a short handle structure, and aiming at surface contamination or contamination splashed on a wall surface, measuring personnel need to adopt a squatting position or even a kneeling position or a method of temporarily setting a short stool to measure a place beyond the moving range of the personnel, so that the operation is difficult, and the risk of contamination of the measuring personnel is increased.
Therefore, the applicant tries to improve the short handle structure of the existing surface contamination measuring instrument, and changes the short handle structure into a telescopic rod structure, such as a handheld surface contamination measuring instrument of chinese patent CN201921484953.4, but after use, it is found that when the telescopic rod is held for remote measurement, because the distance between the holding point and the main body of the measuring instrument is relatively long, it is difficult to stably maintain the distance between the plastic scintillator detector and the measured surface within a certain range, and the stability of the distance between the two directly affects the accuracy of measurement, so that further improvement needs to be made on the surface contamination measuring instrument to reduce the operation difficulty and the measurement accuracy in different distance measurements.
Disclosure of Invention
The above-mentioned not enough to prior art, the to-be-solved technical problem of the utility model is to provide a surface pollution measuring apparatu, solve present surface pollution measuring apparatu when measuring, have the operation difficulty and measure the relatively poor problem of accuracy, gain the effect that measurement easy operation and accuracy are good.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a surface pollution measuring instrument comprises a measuring instrument main body, wherein the measuring instrument main body comprises a shell and a detector arranged at the bottom of the shell; the shell is detachably connected with a telescopic rod;
the shell is arranged on four rotatable wheels which are arranged in a square shape in a balanced mode, the rotation axes of all the wheels are parallel to each other, the diameters of all the wheels are the same, and the vertical distances from the rotation axes of the wheels to the detector are the same.
Preferably, the bottom of the shell is provided with a groove for accommodating the detector, the detector is arranged in the groove and can vertically slide, and a lifting structure for driving the detector to vertically slide is further arranged in the groove.
Further, still be equipped with the infrared distance meter that can follow the vertical slip of detector in the casing, infrared distance meter's sense terminal is down.
Furthermore, the lifting structure is provided with four wheels which correspond to the four wheels one by one, the shell is provided with two opposite side surfaces, two fixing shafts penetrate through each side surface, the inner ends of the fixing shafts extend into the grooves, and the four rotatable wheels are connected to the outer ends of the fixing shafts in a one-to-one mode;
elevation structure includes the adjusting bolt of vertical setting, adjusting bolt's pole portion up and with the lower surface butt of detector, threaded connection has adjusting nut on the adjusting bolt, adjusting nut fixed connection in the inner of fixed axle.
Furthermore, a plurality of compression springs are vertically arranged between the upper surface of the detector and the shell, and the compression springs are in a compressed state.
Preferably, a main display screen is arranged on the shell, and an auxiliary display screen is arranged on the telescopic rod.
Furthermore, the shell is provided with a tubular connecting seat which can be connected with the end part of the telescopic rod in a buckling way so as to realize the detachable connection of the telescopic rod and the shell;
the power supply line and the data line of the auxiliary display screen are both arranged in the telescopic rod in a penetrating mode and are electrically connected with the interface end at the end portion of the telescopic rod, and the joint end matched with the interface end is arranged in the tubular connecting seat.
Preferably, the detector adopts a large-area thin-layer lanthanum bromide plastic scintillator, the telescopic rod adopts a bamboo charcoal fiber material, and the wheel adopts an epoxy resin material.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses set up the telescopic link on the casing and improve the use degree of difficulty of measuring apparatu, and made further improvement to the measuring apparatu on this basis, through set up the wheel on the casing, make no matter the telescopic link is in the extension state or shortens the state and can easily stably keep the interval of detector and measured surface, and grip the telescopic link and make the measuring apparatu translation also because of the roll of wheel become easier on the measured surface; the cooperation of telescopic link and wheel makes the operation of measuring apparatu simpler, and the measuring accuracy obtains promoting.
2. The tubular connecting seat at the tail part of the measuring instrument is internally provided with a joint end, so that the electric connection between the auxiliary display screen and the measuring instrument is realized while the telescopic rod is plugged in and pulled out, and when a holding point of a measurer on the telescopic rod is far away from the measuring instrument, the auxiliary display screen displays a measuring result and related parameters in real time, so that the measuring instrument is more practical and convenient; and through the design of a circuit or a control system, when the telescopic rod is connected with the shell, the display is realized only by the auxiliary display screen, so that the energy consumption can be effectively reduced, and the standby and use time of the measuring instrument can be prolonged.
3. The utility model discloses a distance on detector and the surface that awaits measuring is adjusted to elevation structure, makes the use of measuring apparatu more nimble, and all can calculate the interval that obtains detector and surface that awaits measuring through elevation structure and infrared distance meter, both mutual independence, but check-up each other makes the adjustment of interval more accurate.
Drawings
FIG. 1 is a perspective view of a surface contamination measuring instrument according to an embodiment;
FIG. 2 is a schematic bottom view of the meter body according to an embodiment;
FIG. 3 is a schematic view of an embodiment of the lifting structure;
the device comprises a shell 1, a detector 2, an expansion link 3, wheels 41, a fixed shaft 42, an adjusting bolt 51, an adjusting nut 52, a compression spring 53, an infrared distance meter 6, a main display screen 71, a secondary display screen 72, a tubular connecting seat 81 and a joint end 82.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1, a surface contamination measuring instrument includes a main body of the measuring instrument, the main body of the measuring instrument includes a housing 1 and a detector 2 disposed at the bottom of the housing 1; the shell 1 is detachably connected with a telescopic rod 3;
the casing 1 is square, the two opposite side surfaces of the casing 1 are rotatably connected with wheels 41 at positions close to four corners of the casing 1, the rotation axes of all the wheels 41 are parallel to each other, the diameters of all the wheels 41 are the same, and the vertical distances from the rotation axes of the wheels 41 to the detector 2 are equal.
When the telescopic rod is implemented, the telescopic rod 3 is made of bamboo charcoal fiber materials, and the materials have the characteristics of small density and high strength, so that operators can save more labor, and the probability of human body contamination can be reduced to a certain extent; the wheel 41 is made of a special epoxy resin material, and the material has good radioactive decontamination performance, so that the contamination risk of the wheel 41 in the advancing process can be reduced, the pollution diffusion caused by the rolling of the wheel 41 is avoided, and the influence of the contamination of the wheel 41 on the measurement accuracy of the measuring instrument is also avoided.
The utility model discloses set up the telescopic link 3 on casing 1 and improve the use degree of difficulty of measuring apparatu, and further improved the measuring apparatu on this basis, through set up wheel 41 on casing 1, make no matter telescopic link 3 is in the extension state or shortens the state and can easily stably keep the interval of detector 2 and measured surface, and grip telescopic link 3 and make the measuring apparatu translation also become easier because of the roll of wheel 41 on the measured surface; the telescopic rod 3 and the wheel 41 are matched to enable the operation of the measuring instrument to be simpler, and the measuring accuracy is improved.
Preferably, the bottom of the shell 1 is provided with a groove for accommodating the detector 2, the detector 2 is arranged in the groove and can vertically slide, and the groove is also internally provided with a lifting structure for driving the detector 2 to vertically slide.
Like this, can be according to measuring the interval of demand adjustment detector 2 and the surface that awaits measuring, when the surface pollution degree is lighter, can adjust detector 2 downwards to make the pollution source kind that detects more detailed, when the surface pollution degree is more serious, can upwards adjust detector 2, in order to filter the interference of irrelevant pollution source, make the measurement more accurate.
In this embodiment, two fixing shafts 42 are respectively disposed on two opposite side surfaces of the housing 1 corresponding to the wheels 41, inner ends of the fixing shafts 42 extend into the grooves, and four rotatable wheels 41 are connected to outer ends of the fixing shafts 42 one by one;
elevation structure includes the adjusting bolt 51 of vertical setting, and adjusting bolt 51's pole portion is up and with the lower surface butt of detector 2, and threaded connection has adjusting nut 52 on adjusting bolt 51, and adjusting nut 52 fixed connection is in the inner of fixed axle 42.
Thus, the distance between the detector 2 and the surface to be measured (or the lowest part of the wheel 41) can be adjusted by screwing the adjusting bolt 51; meanwhile, the adjusting nut 52 is connected with the fixed shaft 42 instead of being directly connected with the shell 1, so that the base reference position of the detector 2 in the vertical direction is only the lowest position of the wheels 41, and during assembly, only the axes of the four wheels 41 are required to be positioned on the same plane, and the distance between the detector 2 and the surface to be detected can be calculated through the radius of the wheels 41 and the number of turns of the screwing of the adjusting bolt 51; the position of the detector 2 can be adjusted more simply and accurately.
Further, a plurality of compression springs 53 are vertically arranged between the upper surface of the detector 2 and the housing 1, the compression springs 53 are in a compressed state, and two ends of each compression spring 53 are fixedly connected with the upper surfaces of the housing 1 and the detector 2 respectively.
Therefore, the pressing spring 53 always keeps the detector 2 in a pressing state, the detector 2 is clamped by matching with the adjusting bolt 51, the adjusting bolt 51 and the adjusting nut 52 are always in a stressed state, and the adjusting bolt 51 is prevented from freely rotating due to shaking of a measuring instrument or other conditions when the detector is used.
Further, still be equipped with in the casing 1 and follow the vertical gliding infrared distance measuring instrument 6 of detector 2, infrared distance measuring instrument 6's sense terminal is down.
Therefore, the distance between the detector 2 and the surface to be measured can be obtained through calculation, and can also be directly measured through the infrared distance meter 6, and the two independent distance measurement schemes can be mutually checked and corrected to ensure accuracy.
Preferably, the housing 1 is provided with a main display 71, and the extendable rod 3 is provided with a sub display 72.
Therefore, when the telescopic rod 3 is held for long-distance measurement, the measurement data and related parameters can be conveniently checked in real time through the auxiliary display screen 72, so that the use of the measuring instrument is more convenient; meanwhile, through circuit design, when the telescopic rod 3 is connected with the shell 1, only the auxiliary display screen 72 displays the telescopic rod, so that energy consumption can be effectively reduced, and the standby time and the service time of the measuring instrument can be prolonged.
Furthermore, the casing 1 is provided with a tubular connecting seat 81 which can be connected with the end part of the telescopic rod 3 in a buckling manner so as to realize the detachable connection of the telescopic rod 3 and the casing 1;
a power supply wire (not shown in the figure) and a data wire (not shown in the figure) of the auxiliary display screen 72 are both arranged in the telescopic rod 3 in a penetrating way and are electrically connected with an interface end (not shown in the figure) at the end part of the telescopic rod 3, and a joint end 82 matched with the interface end is arranged in the tubular connecting seat 81; in this embodiment, a controller (not shown) is further disposed in the housing 1, and the controller is electrically connected to the main display 71, the connector 82, the infrared distance meter 6 and the detector 2.
Like this, the data line and the power cord of vice display screen 72 all are located telescopic link 3, make the measuring apparatu more pleasing to the eye, and simultaneously, when dismantling telescopic link 3, vice display screen 72 also with this surface pollution measuring apparatu disconnection, it is more convenient to use.
Preferably, the detector 2 adopts a large-area thin-layer lanthanum bromide plastic scintillator.
Thus, the detector 2 is LaBr which is not easy to deliquesce3(Ce) material, which has the property of being insensitive to humidity variations, allows better environmental suitability of the meter.
The measuring instrument described in this embodiment is further provided with an audible and visual alarm (not shown in the figure), the audible and visual alarm is electrically connected with the controller, and when the pollution is detected to exceed the standard, the audible and visual alarm can give out sound and give out light alarm.
The nuclide used in the working scene of the traditional nuclear medicine is single, and the operator knows the currently operated nuclide, so that the measurement evaluation of the specific nuclide can be realized by directly selecting the measurement mode of the nuclide species in the measurement process; however, with the progress of basic scientific research of nuclear medicine in China, the possibility of operating the polynucleotide in clinical nuclear medicine is increasingly improved; the situation that the surface, the wall surface and the split charging cabinet are polluted is not clear any more, and an operator cannot judge which nuclide causes the pollution at the first time, so that the surface pollution measuring instrument also needs to have the function of identifying the nuclide;
therefore, the measurement system carried by the surface contamination measurement instrument described in this embodiment adopts an optimal linear association memory neural network nuclide identification method, and 80 nuclide doses are prestored to expand the nuclear database; simulating efficiency scale factors of different nuclides and mixture thereof under various scene conditions by a Monte Carlo method under the conditions of preset scenes (including medical nuclide split charging, console contamination, nuclide scattering on the ground, wall corners and the like); therefore, the discrimination measurement of unknown nuclides and mixed nuclides is realized;
the energy response range of the surface contamination measuring instrument is 50 keV-2 MeV, and the pair can be realized by internally arranging 80 nuclide dose databases18F、32P、89Sr、90Y、99mTc、111In、125I、131I、137Cs、201The discrimination and measurement of Tl and other nuclides or their combination is 5-5 × 106cps, detector window area 170cm2And meets the requirement of GB 18871-2002 'basic standard for ionizing radiation protection and radiation source safety' on the measurement of the surface pollution control level.
The surface pollution measuring instrument of the utility model has the nuclide identification function, can discriminate and measure unknown nuclides and mixed nuclides, is a light surface pollution monitoring instrument which is more in line with human factors engineering design, can be widely applied to the nuclear medicine science construction in the medical and health field, and provides technical support for the radiation and health practice; and is also suitable for the teaching and scientific research fields of nuclear power plants and the like which may have nuclear pollution.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. A surface pollution measuring instrument comprises a measuring instrument main body, wherein the measuring instrument main body comprises a shell and a detector arranged at the bottom of the shell; the method is characterized in that: the shell is detachably connected with a telescopic rod;
the shell is arranged on four rotatable wheels which are arranged in a square shape in a balanced mode, the rotation axes of all the wheels are parallel to each other, the diameters of all the wheels are the same, and the vertical distances from the rotation axes of the wheels to the detector are the same.
2. A surface contamination measuring instrument according to claim 1, wherein: the bottom of casing is seted up and is used for holding the recess of detector, but the detector is located in the recess and vertical slip, still is equipped with in the recess and is used for driving the vertical gliding elevation structure of detector.
3. A surface contamination measuring instrument according to claim 2, wherein: an infrared distance meter capable of sliding vertically along with the detector is further arranged in the shell, and the detection end of the infrared distance meter faces downwards.
4. A surface contamination measuring instrument according to claim 2, wherein: the lifting structure is provided with four wheels which correspond to the four wheels one by one, the shell is provided with two opposite side surfaces, two fixing shafts penetrate through each side surface, the inner ends of the fixing shafts extend into the grooves, and the four rotatable wheels are connected to the outer ends of the fixing shafts one by one;
elevation structure includes the adjusting bolt of vertical setting, adjusting bolt's pole portion up and with the lower surface butt of detector, threaded connection has adjusting nut on the adjusting bolt, adjusting nut fixed connection in the inner of fixed axle.
5. The surface contamination measuring instrument according to claim 4, wherein: a plurality of compression springs are vertically arranged between the upper surface of the detector and the shell, and the compression springs are in a compressed state.
6. A surface contamination measuring instrument according to claim 1, wherein: the shell is provided with a main display screen, and the telescopic rod is provided with an auxiliary display screen.
7. The surface contamination measuring instrument according to claim 6, wherein: the shell is provided with a tubular connecting seat which can be connected with the end part of the telescopic rod in a buckling way so as to realize the detachable connection of the telescopic rod and the shell;
the power supply line and the data line of the auxiliary display screen are both arranged in the telescopic rod in a penetrating mode and are electrically connected with the interface end at the end portion of the telescopic rod, and the joint end matched with the interface end is arranged in the tubular connecting seat.
8. A surface contamination measuring instrument according to claim 1, wherein: the detector adopts a large-area thin-layer lanthanum bromide plastic scintillator.
9. A surface contamination measuring instrument according to claim 1, wherein: the telescopic rod is made of bamboo charcoal fiber materials.
10. A surface contamination measuring instrument according to claim 1, wherein: the wheel is made of epoxy resin materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122632683.0U CN216013688U (en) | 2021-10-31 | 2021-10-31 | Surface pollution measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122632683.0U CN216013688U (en) | 2021-10-31 | 2021-10-31 | Surface pollution measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN216013688U true CN216013688U (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122632683.0U Active CN216013688U (en) | 2021-10-31 | 2021-10-31 | Surface pollution measuring instrument |
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| CN (1) | CN216013688U (en) |
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2021
- 2021-10-31 CN CN202122632683.0U patent/CN216013688U/en active Active
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