CN217443549U - Probe and detection device for portable surface nuclear pollution detection - Google Patents

Abstract

The utility model discloses a probe for portable surface nuclear pollution detects, the probe includes: the base is a shell structure with an opening on one surface and a containing cavity; the transparent cover plate is arranged on one side of the opening of the base and is detachably connected with the opening, a circular through hole is formed in the transparent cover plate, and a fence is arranged in the circular through hole; the Mylar film is arranged on the circular through hole in the inner surface of the transparent cover plate in a matched mode and used for shielding visible light; the radioactivity measuring component is arranged in the base and is opposite to the round through hole, and is used for measuring the radioactivity intensity of the nuclear polluted surface; the vent hole is arranged on the base or the transparent cover plate and is used for balancing the pressure difference inside and outside the cavity; if the vent hole is arranged on the transparent cover plate, a breathable shading medium is arranged on the inner surface of the transparent cover plate to cover the vent hole arranged on the transparent cover plate; if the vent hole is arranged on the base, a pressure relief valve is arranged in the vent hole.

Description

Probe and detection device for portable surface nuclear pollution detection

Technical Field

The application belongs to the technical field of radioactive measurement, and particularly relates to a probe and a detection device for portable surface nuclear pollution detection.

Background

At present, the application of radioactivity detection technology is more and more extensive, and especially portable detection devices are increasingly important. In the field of portable nuclear detection at present, the device generally adopted is a portable radiometer, and the working principle of the radiometer is as follows: the radioactive rays emitted by the radioactive substances enter the sealed radiation instrument probe through the light-tight mylar film on the surface of the radiation instrument probe, and the specific radioactive intensity is detected by the radioactive intensity detection assembly in the radiation instrument probe and displayed on the radiation instrument host. However, in some special environments, such as a radiometer probe with a large temperature difference between the inside and the outside, being located in a plateau area, and being located in a deep well, the mylar film may be deformed and damaged due to the pressure difference between the inside and the outside of the radiometer probe, which weakens the shading effect, and seriously affects the service life of the radiometer probe and the accuracy of radioactivity detection.

SUMMERY OF THE UTILITY MODEL

In view of the above, some embodiments disclose a probe for portable surface nuclear contamination detection, the probe comprising:

the base is a shell structure with an opening on one surface and a containing cavity;

the transparent cover plate is arranged on one side of the opening of the base and is detachably connected with the opening, a circular through hole is formed in the transparent cover plate, and a fence is arranged in the circular through hole;

the mylar film is arranged on the circular through hole in the inner surface of the transparent cover plate in a matching mode and used for shielding visible light;

the radioactivity measuring component is arranged in the base, is opposite to the round through hole and is used for measuring the radioactivity intensity of the nuclear pollution surface;

the vent hole is arranged on the base or the transparent cover plate and is used for balancing the pressure difference between the inside and the outside of the accommodating cavity;

if the vent hole is arranged on the transparent cover plate, a breathable shading medium is arranged on the inner surface of the transparent cover plate to cover the vent hole arranged on the transparent cover plate;

if the vent hole is arranged on the base, a pressure relief valve is arranged in the vent hole.

Some embodiments disclose a probe for portable surface nuclear pollution detection, which is provided with at least one vent hole at any position on the periphery of a circular through hole of a transparent cover plate.

Some embodiments disclose a probe for portable surface nuclear contamination detection, wherein at least one vent hole is formed on any surface of the base.

Some embodiments disclose a probe for portable surface nuclear contamination detection, the diameter of the vent hole is 0.1-1 mm.

Some embodiments disclose a probe for portable surface nuclear contamination detection, further comprising a cover plate detachably mounted on the base and located outside the cover plate.

Some embodiments disclose a probe for portable surface nuclear pollution detection, be provided with the recess on the apron, be provided with the sand grip with the recess adaptation on the base.

According to the probe for detecting the portable surface nuclear pollution disclosed by some embodiments, the size of the breathable shading medium is matched with that of the transparent cover plate, the breathable shading medium is provided with a through hole matched with the circular through hole, and the breathable shading medium is made of foam.

Some embodiments disclose a probe for portable surface nuclear contamination detection, the fence comprises a plurality of cross bars and a plurality of longitudinal bars regularly arranged in a circular through hole, and the cross bars and the longitudinal bars divide the circular through hole into a plurality of hole structures.

Some embodiments disclose a detection device for portable surface nuclear contamination detection, comprising the probe described above.

Some embodiments disclose a detection device for detecting portable surface nuclear pollution, further comprising a host, wherein an aviation socket is arranged on the base, and is used for connecting the probe with the host.

The utility model provides a probe, detection device for portable surface nuclear pollution detects, the setting up of air vent and ventilative shading medium makes the probe hold the inside in chamber and outside pressure reach balanced state, has avoided the damage that the wheat draws the membrane to lead to because of inside and outside pressure differential under special environment, and the setting of apron has prolonged detection device's life-span, has guaranteed the accuracy and the validity of the radioactive intensity of measurement radioactive ray.

Drawings

FIG. 1 is a schematic view of a probe assembly according to embodiment 1;

FIG. 2 is a schematic diagram of a transparent cover plate structure in embodiment 1;

FIG. 3 is a schematic view of the structure of the base in embodiment 1;

FIG. 4 is a schematic view of the probe assembly of embodiment 2;

fig. 5 is a schematic view of the base structure of embodiment 2.

Reference numerals

1 base 2 transparent cover plate

3 Meela membrane 4 radioactivity measuring assembly

41 first radioactivity measuring part 42 second radioactivity measuring part

5 ventilating shading medium 6 cover plate

11. 21 air vent 7 pressure release valve

22 circular through hole 221 fence

222 hole structure 2211 cross bar

2212 longitudinal rod 12 first threaded hole

13 second threaded hole 14 aviation socket

15 aviation plug

Detailed Description

The word "embodiment" as used herein, is not intended to limit any embodiment described as "exemplary" to any other embodiment or advantages. Performance index tests in the examples of this application, unless otherwise indicated, were performed using routine experimentation in the art. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; other test methods and techniques not specifically mentioned in the present application are those commonly employed by those of ordinary skill in the art.

The terms "substantially" and "about" are used herein to describe small fluctuations. For example, they may mean less than or equal to ± 5%, such as less than or equal to ± 2%, such as less than or equal to ± 1%, such as less than or equal to ± 0.5%, such as less than or equal to ± 0.2%, such as less than or equal to ± 0.1%, such as less than or equal to ± 0.05%. Numerical data represented or presented herein in a range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range. For example, a numerical range of "1 to 5%" should be interpreted to include not only the explicitly recited values of 1% to 5%, but also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values, such as 2%, 3.5%, and 4%, and sub-ranges, such as 1% to 3%, 2% to 4%, and 3% to 5%, etc. This principle applies equally to ranges reciting only one numerical value. Moreover, such an interpretation applies regardless of the breadth of the range or the characteristics being described.

In this document, including the claims, conjunctions such as "comprising," including, "" carrying, "" having, "" containing, "" involving, "" containing, "and the like are understood to be open-ended, i.e., to mean" including but not limited to. Only the conjunctions "consisting of … …" and "consisting of … …" are closed conjunctions.

In the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In the examples, some methods, means, instruments, apparatuses, etc. well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

On the premise of no conflict, the technical features disclosed in the embodiments of the present application may be combined at will, and the obtained technical solution belongs to the content disclosed in the embodiments of the present application. It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, referred to herein, refer to the orientation or positional relationship indicated in the drawings, which is merely for convenience in describing technical features and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention unless it is conflicting with the context. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless otherwise conflicting context.

In some embodiments, a probe for portable surface nuclear contamination detection includes:

the base is a shell structure with an opening on one surface and a containing cavity; a cavity in the housing structure of the base adapted to receive other components that make up the probe, such as a radiometric component;

the transparent cover plate is arranged on one side of the opening of the base and is detachably connected with the opening, a circular through hole is formed in the transparent cover plate, and a fence is arranged in the circular through hole; the fence is a structure reinforcing part arranged in the circular through hole, and the mylar film can play a role in protecting the mylar film when arranged on the circular through hole, so that the mylar film can be prevented from being deformed and damaged;

the mylar film is arranged on the circular through hole in the inner surface of the transparent cover plate in a matching mode and is used for shielding visible light but not preventing radioactive rays from passing through, and accurate detection of the radioactive intensity by the influence of the visible light on the detection is prevented;

the radioactivity measuring component is arranged in the containing cavity of the base and fixed on the inner wall of the base, and the arranged position of the radioactivity measuring component is opposite to that of the circular through hole so as to measure the radioactivity intensity of the nuclear polluted surface;

the vent hole is arranged on the base or the transparent cover plate and is used for balancing the pressure difference between the inside and the outside of the accommodating cavity; when the mylar film is arranged on the circular through hole of the transparent cover plate, a closed space is formed in the cavity formed by the transparent cover plate and the inner part of the base, if the environment where the probe is located is subjected to temperature change and other conditions, the pressure intensity of the cavity in the base is easy to be inconsistent with the environmental pressure intensity, so that the internal and external pressures of the cavity are unbalanced, and the mylar film is easy to deform, damage and the like due to the action of pressure difference;

if the vent hole is arranged on the transparent cover plate, a breathable shading medium is arranged on the inner surface of the transparent cover plate to cover the vent hole arranged on the transparent cover plate; the breathable shading medium can effectively shade visible light from entering the containing cavity of the base, so that the influence of the visible light on the measurement effect due to the ventilation hole is avoided, meanwhile, the gas passing through the ventilation hole is not influenced, and the pressure difference between the inside and the outside of the containing cavity can be balanced;

if the vent hole is arranged on the base, a pressure relief valve is arranged in the vent hole; the pressure release valve is usually arranged in the base, the pressure release valve can release pressure in two directions, manual pressure release can be carried out according to needs, pressure can be released automatically, and when the pressure difference between the inside and the outside of the cavity of the base reaches a certain numerical value, the pressure release valve is opened automatically to balance the pressure inside and outside the cavity of the base so as to prevent the mylar from deforming and damaging due to the action of the pressure difference. Besides, the arrangement of the pressure release valve can prevent visible light from entering the base cavity through the vent hole to influence the radioactivity measurement precision, and can also prevent liquid from entering the base cavity.

As an optional implementation mode, 1-10 vent holes can be arranged. In an alternative embodiment, a single vent hole is formed at any position on the outer periphery of the circular through hole of the transparent cover plate. Usually, the circular through hole on the transparent cover plate is arranged in the central local area of the transparent cover plate, and the edge area outside the circular through hole can be provided with the vent hole, so that the strength of the transparent cover plate is not influenced, and the pressure regulation function of the vent hole can be realized; under the general condition, the pressure balance inside and outside the cavity can be guaranteed by arranging the vent hole, the vent hole is excessively arranged, light leakage is easy to occur, and the radioactivity intensity of radioactive rays entering the probe is possibly too high, so that the radioactivity measurement precision is influenced. When the vent hole is arranged on the transparent cover plate, the breathable shading medium is also arranged and fixed on the transparent cover plate, so that the vent hole can be covered.

In an alternative embodiment, a vent is provided on any surface of the base. Generally, the base is a columnar structure, the top surface is open, and the vent holes can be arranged at any position of the side wall.

In some embodiments, the diameter of the vent hole is 0.1-1 mm. The light leakage is easy to occur when the aperture of the vent hole is too large, and the measurement effect is influenced; too small aperture of the vent hole can cause low pressure release efficiency, and the pressure difference cannot be effectively adjusted, so that the Mylar film cannot be effectively protected.

In some embodiments, the device further comprises a cover plate detachably arranged and installed on the base and located outside the transparent cover plate. Generally, the cover plate is arranged and installed on the base, can protect the transparent cover plate, the mylar film and the radioactivity measuring component in the base, and can be detachably connected between the cover plate and the base, so that the cover plate can be conveniently installed or detached.

In general, the material of the cover plate can be made of a material that has a shielding effect on the radioactive rays, so that the shielding effect on the radioactivity can be achieved, and the corresponding shielding material can be selected in a targeted manner according to the type of radioactive rays.

As an optional embodiment, the cover plate is provided with a groove, and the base is provided with a raised line matched with the groove. Generally, when the cover plate is arranged and installed on the base, the grooves and the raised lines are matched with each other, so that the cover plate can be fixed; for example, when the probe is in a non-working state, the convex strips are clamped in the grooves, and the cover plate is arranged on the base, so that radioactive rays can be prevented from entering the cavity in the base through the Mylar film.

As an optional implementation mode, the size of the breathable shading medium is matched with that of the transparent cover plate, through holes matched with the circular through holes are formed in the breathable shading medium, and the breathable shading medium is made of foam. Generally, the through holes formed in the air-permeable and light-shielding medium are the same as the circular through holes formed in the transparent cover plate in size and correspond to the circular through holes in position, so that the air-permeable and light-shielding medium is prevented from blocking the mylar film formed on the transparent cover plate, and the detection result is prevented from being influenced.

In some embodiments, the fence comprises a plurality of cross bars and a plurality of longitudinal bars which are regularly arranged in the circular through hole, and the cross bars and the longitudinal bars divide the circular through hole into a plurality of regularly arranged hole structures, so that a rigid protection structure can be formed to prevent the mylar from deforming, the passage of radioactive rays is not hindered, and accurate measurement of radioactivity is ensured. In general, the widths of the transverse and longitudinal bars are preferably set as narrow as possible while ensuring that the mylar film can be reinforced, so that the radiation intensity of the radioactive rays passing through the circular through-hole is not impaired.

In some embodiments, a detection device for portable surface nuclear contamination detection includes a probe as disclosed in the above examples.

In some embodiments, the detection device for detecting the nuclear pollution on the portable surface further comprises a host, and the base is provided with an aviation socket for connecting the probe with the host. Generally, the host computer includes a receiving module, a storage module, a data analysis module and a display module for receiving, storing, analyzing and displaying the measurement data measured by the probe.

The technical details are further illustrated in the following description with reference to the embodiments and the accompanying fig. 1, 2, 3, 4, and 5.

Example 1

Fig. 1 is a schematic view of a probe assembly disclosed in embodiment 1, fig. 2 is a schematic view of a transparent cover plate structure disclosed in embodiment 1, and fig. 3 is a schematic view of a base structure disclosed in embodiment 1.

As shown in fig. 1, the probe for portable surface nuclear contamination detection includes: the device comprises a base 1, a transparent cover plate 2, a Mylar film 3, a radioactivity measuring component 4, a breathable shading medium 5, a cover plate 6 and a vent hole 21.

As shown in fig. 1, 2 and 3, the second radioactivity measuring part 42, the first radioactivity measuring part 41, the gas-permeable and light-shielding medium 5, the mylar film 3, the transparent cover plate 2 and the cover plate 6 are sequentially arranged and assembled at the adaptive positions in the base 1 from the near to the far from the base 1; the transparent cover plate 2 is provided with a circular through hole 22, the circular through hole 22 is provided with a plurality of rails 221 formed by criss-cross arrangement of cross bars 2211 and vertical bars 2212, and the cross bars 2211 and the vertical bars 2212 divide the circular through hole into a plurality of regularly arranged hole structures 222; on passing through apron 2, a vent 21 has been seted up to the position department of passing through 2 apex angles of apron in the neighbouring of circular through-hole periphery, and vent 21 plays the effect of balanced base appearance chamber outside atmospheric pressure. The mylar film 3 is attached to a fence 221 in a circular through hole 22 in the inner surface of the transparent cover plate 2 through an adhesive glue, a breathable shading medium 5 is arranged between the mylar film 3 and the first radioactivity measuring part 41, the size of the breathable shading medium 5 is matched with that of the transparent cover plate 2, a through hole matched with the circular through hole is formed in the breathable shading medium 5, the position of the first radioactivity measuring part 41 corresponds to the through hole, radioactive rays can enter the cavity of the base through the through hole to be measured, the breathable shading medium 5 covers the vent hole 21, and the breathable shading medium 5 is used for shading the light rays transmitted from the vent hole 21 and realizing smooth circulation of air flow inside and outside the cavity; the transparent cover plate 2 is screwed and fixed in the screw thread matched with the inner part of the base; the second radioactivity measuring component 42 is fixedly arranged in a first threaded hole 12 in the cavity of the base 1 through threaded connection, and the probe is connected with a host through an aviation plug 15 arranged in an aviation socket 14;

the bottom of base 1 is provided with sunken second screw hole 13, and this second screw hole 13 opening is in the outside of base 1 for install base 1 on the measuring pole with threaded connection mode.

When the probe is in a non-working state, the cover plate 6 is in fit connection with the raised line on the base 1 through the groove and is detachably mounted on the base so as to prevent radioactive rays in the external environment from entering the probe, activate the radioactivity measuring assembly and effectively enable the probe to be separated from the working state.

Example 2

Fig. 4 is a schematic view of the probe assembly disclosed in embodiment 2, and fig. 5 is a schematic view of the base structure disclosed in embodiment 2.

As shown in fig. 4 and 5, the probe for portable surface nuclear contamination detection includes: the device comprises a base 1, a transparent cover plate 2, a Mylar film 3, a radioactivity measuring component 4, a breathable shading medium 5, a cover plate 6, a vent hole 11 and a pressure release valve 7. Sequentially arranging and assembling a second radioactivity measuring part 42, a first radioactivity measuring part 41, a breathable shading medium 5, a Mylar film 3, a transparent cover plate 2 and a cover plate 6 at adaptive positions in the base 1 from near to far from the base 1; the transparent cover plate 2 is provided with a circular through hole, a plurality of cross rods and a plurality of vertical rods are arranged in the circular through hole to form a fence in a criss-cross mode, the fence is of a reinforcing structure and plays a role in protecting the Mylar membrane, the Mylar membrane 3 is attached to the fence in the circular through hole in the inner surface of the transparent cover plate 2 through sticky glue, a breathable shading medium 5 is arranged between the Mylar membrane 3 and the first radioactivity measuring part 41, the size of the breathable shading medium 5 is matched with that of the transparent cover plate 2, the breathable shading medium 5 is provided with a through hole matched with the circular through hole, the arrangement position of the first radioactivity measuring part 41 corresponds to the through hole, radioactive rays can enter the cavity of the base through the through hole to be measured, and the breathable shading medium 5 is arranged between the Mylar membrane and the first radioactivity measuring part to play a buffering role; the air vent 11 is arranged at a set position of the side wall of the base 1, the air vent 11 plays a role in balancing the air pressure inside and outside the cavity of the base, the pressure release valve 7 is arranged at one end of the air vent 11 outside the base, and when the pressure difference inside and outside the cavity of the base reaches a certain value, the pressure release valve is automatically opened to balance the pressure inside and outside the cavity of the base so as to prevent the mylar from deforming and damaging due to the pressure difference; the transparent cover plate 2 is screwed and fixed in the screw thread matched with the inner part of the base; the second radioactivity measuring component 42 is fixedly arranged in the first threaded hole 12 in the cavity of the base 1 through threaded connection; the probe is connected with the host through an aviation plug 15 arranged in an aviation socket 14;

the bottom of base 1 is provided with sunken second screw hole 13, and this second screw hole 13 opening is in the outside of base 1 for install base 1 on the measuring pole with threaded connection mode.

When the probe is in a non-working state, the cover plate 6 is in fit connection with the raised line on the base 1 through the groove and is detachably mounted on the base so as to prevent radioactive rays in the external environment from entering the probe, activate the radioactivity measuring assembly and effectively enable the probe to be separated from the working state.

The utility model provides a probe, detection device for portable surface nuclear pollution detects, the setting of air vent and ventilative shading medium makes the probe hold the inside in chamber and outside pressure reach balanced state, has avoided the damage that the wheat draws the membrane to lead to because of inside and outside pressure differential under special environment, and the setting of apron has prolonged detection device's life-span, has guaranteed the accuracy and the validity of radioactive intensity of radioactive ray.

The technical solutions and the technical details disclosed in the embodiments of the present application are only examples to illustrate the inventive concept of the present application, and do not constitute a limitation on the technical solutions of the present application, and all the conventional changes, substitutions, combinations, and the like made to the technical details disclosed in the present application have the same inventive concept as the present application and are within the protection scope of the claims of the present application.

Claims (10)

1. A probe for portable surface nuclear contamination detection, the probe comprising:

the base is a shell structure with an opening on one surface and a containing cavity;

the transparent cover plate is arranged on one side of the opening of the base and is detachably connected with the opening, a circular through hole is formed in the transparent cover plate, and a fence is arranged in the circular through hole;

the mylar film is arranged on the circular through hole in the inner surface of the transparent cover plate in a matched mode and used for shielding visible light;

the radioactivity measuring assembly is arranged in the base and is opposite to the round through hole, and is used for measuring the radioactivity intensity of the nuclear polluted surface;

the vent hole is arranged on the base or the transparent cover plate and is used for balancing the pressure difference between the inside and the outside of the cavity;

if the vent hole is arranged on the transparent cover plate, a breathable shading medium is arranged on the inner surface of the transparent cover plate to cover the vent hole arranged on the transparent cover plate;

if the vent hole is arranged on the base, a pressure relief valve is arranged in the vent hole.

2. The probe for portable surface nuclear contamination detection of claim 1, wherein at least one vent hole is provided at any position of the periphery of the circular through hole of the transparent cover plate.

3. The probe for portable surface nuclear contamination detection of claim 1, wherein at least one vent hole is provided on any surface of the base.

4. The probe for portable surface nuclear contamination detection of claim 1, wherein the vent hole has a diameter of 0.1-1 mm.

5. The probe for portable surface contamination detection according to claim 1, further comprising a cover plate removably mounted on the base outside the transparent cover plate.

6. The probe for portable surface nuclear pollution detection according to claim 5, wherein the cover plate is provided with a groove, and the base is provided with a convex strip matched with the groove.

7. The probe for detecting the nuclear pollution on the portable surface according to claim 1, wherein the size of the air-permeable and light-shielding medium is matched with that of the transparent cover plate, a through hole matched with the circular through hole is formed in the air-permeable and light-shielding medium, and the air-permeable and light-shielding medium is foam.

8. The probe for portable surface nuclear contamination detection according to claim 1, wherein the fence includes a plurality of cross bars and a plurality of longitudinal bars regularly arranged in the circular through hole, the cross bars and the longitudinal bars dividing the circular through hole into a plurality of hole structures.

9. A test device for portable surface nuclear contamination testing comprising a probe according to any one of claims 1 to 8.

10. A testing device for portable surface nuclear contamination detection according to claim 9, further comprising a host computer, wherein an aerial socket is provided on the base for connecting the probe with the host computer.

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