CN219328901U - Underground radiation measuring device - Google Patents

Abstract

The utility model relates to the technical field of nuclear radiation detection, and provides an underground radiation measuring device, which comprises a plurality of measuring units which are spliced in sequence along the length direction of the measuring units, wherein two adjacent measuring units are arranged in a staggered manner, and each measuring unit comprises: the frame is of a regular polygon structure, a plurality of through grooves are formed in the surface of each regular polygon structure in a circumferential direction, and each through groove is located at one face of each regular polygon structure; the detectors are respectively arranged in each through groove; in two adjacent measuring units, the edge of one regular polygon structure is opposite to the surface of the other regular polygon structure. The underground radiation detection device can eliminate detection blind areas in the last measurement unit one by one when the measurement units sequentially pass through the same height in the well drilling, so that the detection area of the underground radiation detection device is increased, and the radiation sources in the whole circumferential direction at the same height of the well drilling can be detected.

Description

Underground radiation measuring device

Technical Field

The utility model relates to the technical field of nuclear radiation detection, in particular to an underground radiation measuring device.

Background

In recent years, the peaceful development and utilization of nuclear energy has become an important subject in the world today, and many nuclear power stations exist in China, so that the lamp fires of thousands of households are lightened, and how to safely develop in the rapid development process is a critical problem. For underground nuclear radiation measurement, one of the modes is to drill a well with a certain depth by using special equipment, then put an underground radiation measurement device into the well for measurement, while the existing underground radiation measurement device is usually of a regular polygon structure, and a detection blind area exists between two adjacent detectors, so that radiation sources in the whole circumferential direction at the same height in the well cannot be detected completely.

Disclosure of Invention

The utility model provides an underground radiation measuring device which is used for solving the defect that in the prior art, a detection blind area exists in the underground radiation measuring device, so that radiation sources in the whole circumferential direction at the same height in a well drilling cannot be detected completely.

The utility model provides an underground radiation measuring device, which comprises a plurality of measuring units, wherein the measuring units are spliced in sequence along the length direction of the measuring units, two adjacent measuring units are arranged in a staggered manner, and each measuring unit comprises: the frame is of a regular polygon structure, a plurality of through grooves are formed in the surface of each regular polygon structure in a circumferential direction, and each through groove is located at one face of each regular polygon structure; the detectors are respectively arranged in each through groove; in the adjacent two measuring units, the edge of one regular polygon structure is opposite to the surface of the other regular polygon structure.

According to the underground radiation measuring device provided by the utility model, the dislocation angle of two adjacent measuring units is 360/2n, wherein n is the number of faces of the regular polygon structure.

According to the underground radiation measurement device provided by the utility model, the regular polygon structure is a regular octahedron structure.

According to the underground radiation measuring device provided by the utility model, the incidence surface of each detector is provided with tellurium-zinc-cadmium crystals, and the tellurium-zinc-cadmium crystals are used for converting incident ray signals into current signals.

According to the underground radiation measurement device provided by the utility model, each detector is internally provided with a circuit module, and the circuit modules are used for converting the current signals into digital signals.

According to the underground radiation measurement device provided by the utility model, the underground radiation measurement device further comprises carbon fiber pipes, and the carbon fiber pipes are sleeved outside the measurement units.

According to the present utility model, there is provided an underground radiation measuring device, further comprising: the two end covers are respectively arranged at two ends of the carbon fiber tube; the data connector is arranged on any end cover and is electrically connected with the detector.

The utility model provides an underground radiation measurement device, which further comprises an upper computer, wherein the upper computer is electrically connected with the circuit module.

According to the underground radiation detection device provided by the utility model, the plurality of measurement units are spliced in sequence along the length direction of the underground radiation detection device, and the two adjacent measurement units are arranged in a staggered manner, so that when the plurality of measurement units sequentially pass through the same height in the well, detection dead zones in the last measurement unit are eliminated one by one, the detection area of the underground radiation detection device is increased, and all radiation sources in the whole circumference direction of the well at the same height are conveniently detected.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a prior art detection of an underground radiation measurement device;

FIG. 2 is a schematic diagram of a probe blind zone in a measurement unit;

FIG. 3 is a schematic illustration of one of the structures of the subsurface radiation measuring device provided by the present utility model;

FIG. 4 is a schematic structural view of the frame shown in FIG. 3;

FIG. 5 is a schematic view of the misalignment angle when two measurement units are spliced;

FIG. 6 is a second schematic diagram of an underground radiation measurement device according to the present utility model;

FIG. 7 is one of the detection schematics of the subsurface radiation measuring device provided by the present utility model;

FIG. 8 is a second schematic diagram of an underground radiation measurement device according to the present utility model;

reference numerals:

10: a frame; 11: a through groove; 20: a detector; 30: detecting a dead zone; 40: a carbon fiber tube; 50: an end cap; 60: a data connector; 100: and a measuring unit.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the mechanical connection and the electrical connection can be adopted; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The below describes the subsurface radiation measuring device of the present utility model in connection with fig. 1-8.

As shown in fig. 3, in the embodiment of the present utility model, the underground radiation measuring device includes a plurality of measuring units 100, where the plurality of measuring units 100 are sequentially spliced along the length direction of the measuring units, and two adjacent measuring units 100 are arranged in a staggered manner. Wherein each measuring unit 100 comprises: a frame 10 and a plurality of detectors 20. Each frame 10 is of a regular polygon structure, a plurality of through grooves 11 are formed in the surface of each regular polygon structure in a circumferential direction, each through groove 11 is located at one face of each regular polygon structure, and a plurality of detectors 20 are arranged in each through groove 11. In two adjacent measuring units 100, the edge of one regular polygon structure is opposite to the surface of the other regular polygon structure.

Specifically, in the present embodiment, each measuring unit 100 includes a frame 10 and a plurality of probes 20. As shown in fig. 4, the frame 10 is a hollow structure, the shape of the frame 10 is a regular polygon structure, which may be a cube, a regular hexagon, a regular octagon, etc., and a through slot 11 is provided on a face of each regular polygon structure, and the through slot 11 is used for installing the detector 20. Specifically, assuming that the frame 10 has a regular octagonal structure, it has 8 faces, each face is provided with a through slot 11, and each through slot 11 is provided with a detector 20, and the detector 20 is used for detecting a radiation source.

In the prior art, as shown in fig. 1, the frame 10 is also a regular octagonal structure, each face of the regular octagonal structure is provided with a detector 20, when the underground radiation source is measured, the regular octagonal structure is put into the well, as shown in fig. 2, the radiation source incident to the detector 20 can be detected, but the radiation source incident to the space between two adjacent detectors 20 cannot be detected, and a detection blind area 30 is formed between two adjacent detectors 20.

As shown in fig. 3, in the embodiment of the present utility model, a plurality of measurement units 100 are sequentially spliced along the length direction thereof, and two adjacent measurement units 100 are arranged in a staggered manner. In this embodiment, the offset arrangement refers to two adjacent measurement units 100, where the second measurement unit 100 rotates at a certain angle relative to the first measurement unit 100, that is, the edge of the second regular polygon structure is opposite to the surface of the previous regular polygon structure. In the case of measuring an underground radiation source, as shown in fig. 7 and 8, taking a regular octagonal structure as an example, a first measuring unit 100 is placed in a well at a certain height, 8 faces of the regular octagonal structure can detect a radiation source in the well opposite to the first measuring unit, and then a second measuring unit 100 is inserted into the well at the height, and because the position of the detector 20 in the second measuring unit 100 is staggered from the position of the detector 20 in one measuring unit 100, the detection blind of the first measuring unit 100 can be detected, thereby increasing the detection area of the radiation source in the well.

Further, when the underground radiation measuring device includes a plurality of measuring units 100, when the third measuring unit 100 extends into the well at the height, since the third measuring unit 100 and the second measuring unit 100 are also arranged in a staggered manner, the detecting blind areas 30 of the second measuring unit 100 can be detected, and the detecting blind areas can be detected sequentially, and when the underground radiation measuring device extends into the well, the detecting blind areas 30 of the previous measuring unit 100 can be detected one by one at a certain height in the well due to the sequential passing of the plurality of measuring units 100, so that the detecting blind areas can be eliminated, and the radiation sources in the circumferential direction of the well can be detected completely.

Further, the greater the number of spliced measurement units 100, the faster the detection efficiency of the subsurface radiation measurement device as it passes through the borehole.

According to the underground radiation detection device provided by the embodiment of the utility model, the plurality of measurement units are spliced in sequence along the length direction of the underground radiation detection device, and the two adjacent measurement units are arranged in a staggered mode, so that when the plurality of measurement units sequentially pass through the same height in the well, detection dead zones in the last measurement unit are eliminated one by one, the detection area of the underground radiation detection device is increased, and all radiation sources in the whole circumference direction of the well at the same height are conveniently detected.

As shown in fig. 5, in the embodiment of the present utility model, the misalignment angle of two adjacent measurement units 100 is 360/2n, where n is the number of faces of the regular polygon structure.

Specifically, when the underground radiation measuring device includes two measuring units 100, assuming that each measuring unit 100 is a regular octagon structure, the misalignment angle of the adjacent two measuring units 100 is 22.5 °; assuming that each measuring unit 100 has a regular hexagonal structure, the misalignment angle of two adjacent measuring units 100 is 30 °. That is, regardless of the fact that the measuring units 100 are of any regular polygonal structure, in the adjacent two measuring units 100, the detector 20 of the second measuring unit 100 is just opposite to the detection blind area 30 in the first measuring unit 100, so that the detection blind area can be eliminated, and the detection area of the underground radiation measuring device can be increased.

Further, in an embodiment of the present utility model, the incident face of each detector 20 is provided with cadmium zinc telluride crystals for converting incident radiation signals into current signals. Specifically, after the radioactive rays enter the tellurium-zinc-cadmium crystal, electron hole pairs are excited, the electron hole pairs drift under the action of an electric field, induced charges are induced, and then a current signal is generated.

Further, a circuit module is disposed in each detector 20, and the circuit module is used for converting the current signal into a digital signal.

Specifically, the induced charge enters the circuit module, and the circuit module comprises a main amplifying circuit and a multi-channel pulse analysis circuit, and the induced charge is converted into a digital signal after passing through the main amplifying circuit and the multi-channel pulse analysis circuit.

Further, in the embodiment of the utility model, the underground radiation measurement device further comprises an upper computer, the upper computer is electrically connected with the circuit module, the induced charges are converted into digital signals after passing through the main amplifying circuit and the multi-channel pulse analysis circuit, then the digital signals enter the upper computer for data output, and the upper computer is internally provided with software capable of recording radiation data of a radioactive source with corresponding depth in the well drilling.

As shown in fig. 6, in the embodiment of the present utility model, the underground radiation measuring device further includes a carbon fiber pipe 40, and the carbon fiber pipe 40 is sleeved outside the plurality of measuring units 100.

Specifically, the carbon fiber tube 40 is sleeved outside the measuring unit 100, so that electromagnetic shielding and dust prevention effects can be achieved, meanwhile, the weight of the underground radiation measuring device can be reduced due to the fact that the carbon fiber tube 40 is light, meanwhile, the carbon fiber tube 40 is beneficial to the passing of rays, and the detection sensitivity of the underground radiation detecting device is guaranteed.

As shown in fig. 6, in an embodiment of the present utility model, the subsurface radiation measuring device further includes: a pair of end caps 50 and a data connector 60. The two end caps 50 are respectively arranged at two ends of the carbon fiber tube 40 to seal the plurality of measuring units 100 in the carbon fiber tube 40, the data connector 60 is arranged at any end cap 50, and two ends of the data connector 60 are respectively electrically connected with the circuit module and the upper computer in the detector.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (8)

1. The utility model provides an underground radiation measuring device, its characterized in that includes a plurality of measuring unit, and a plurality of measuring unit is along self length direction concatenation in proper order, and adjacent two measuring unit dislocation set, every measuring unit includes:

the frame is of a regular polygon structure, a plurality of through grooves are formed in the surface of each regular polygon structure in a circumferential direction, and each through groove is located at one face of each regular polygon structure;

the detectors are respectively arranged in each through groove;

in the adjacent two measuring units, the edge of one regular polygon structure is opposite to the surface of the other regular polygon structure.

2. The apparatus of claim 1, wherein the misalignment angle of two adjacent measuring units is 360/2n, where n is the number of faces of the regular polygon structure.

3. The apparatus of claim 1, wherein the regular polygon structure is a regular octahedron structure.

4. A subsurface radiation measurement device according to any one of claims 1-3, wherein the incidence face of each detector is provided with cadmium zinc telluride crystals for converting incident radiation signals into current signals.

5. The apparatus of claim 4, wherein each of the detectors has a circuit module disposed therein for converting the current signals to digital signals.

6. The apparatus of claim 1, further comprising a carbon fiber tube sleeved outside of the plurality of measurement units.

7. The apparatus for measuring subsurface radiation as described in claim 6, further comprising:

the two end covers are respectively arranged at two ends of the carbon fiber tube;

the data connector is arranged on any end cover and is electrically connected with the detector.

8. The apparatus of claim 5, further comprising a host computer electrically connected to the circuit module.

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