CN214669626U - Impact-resistant and moisture-absorption-resistant scintillation crystal detector - Google Patents

Abstract

The utility model discloses a shock-resistant and moisture absorption-proof scintillation crystal detector, which comprises a shell, wherein a scintillation crystal and a photomultiplier are arranged in the shell, the upper end surface of the scintillation crystal is coupled with the photomultiplier, and a sealing component is sleeved outside the joint of the scintillation crystal and the photomultiplier; the clearance intussuseption between shell and the photomultiplier has the shock attenuation obturator, and the shock attenuation obturator circumference cladding is in the outside of photomultiplier, inlays in the shock attenuation obturator and is equipped with the annular reinforcing plate, and the inner wall and the outer wall of annular reinforcing plate circumference respectively are fixed with a plurality of support archs, and the support arch is located the shock attenuation obturator. The utility model discloses wholly improve the impact resistance and the sealing performance of detector, strengthened the moisture absorption performance of preventing simultaneously.

Description

Impact-resistant and moisture-absorption-resistant scintillation crystal detector

Technical Field

The utility model relates to a scintillation crystal field especially relates to a moisture absorption scintillation crystal detector is prevented in shock-resistant.

Background

The scintillation crystal is a large category of artificial crystal, is a key component of a high-energy ray detection instrument, determines the performance of the high-energy ray detection instrument, and is widely applied to various fields of national economy such as safety inspection, energy, industrial metering, petroleum logging and the like. Among scintillation crystals, lanthanum bromide crystals have the advantages of high light yield, good energy resolution, short decay time, small nonlinear response and the like. The scintillation crystal detector on the existing market generally has the problem of poor impact resistance, and the detector shell is influenced by external force and easily damages internal elements, so that the connection between the internal elements of the existing scintillation crystal detector is easy to enter moisture due to poor internal sealing performance, and the moisture absorption resistance of the detector is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a moisture absorption scintillation crystal detector is prevented to shock-resistant to solve the problem that above-mentioned prior art exists.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a shock-resistant and moisture-absorption-proof scintillation crystal detector, which comprises a shell, wherein a scintillation crystal and a photomultiplier are arranged in the shell, the upper end surface of the scintillation crystal is coupled with the photomultiplier, and a sealing component is sleeved outside the joint of the scintillation crystal and the photomultiplier;

the shell with clearance intussuseption between the photomultiplier is filled with the shock attenuation obturator, the shock attenuation obturator circumference cladding is in the outside of photomultiplier, it is equipped with annular reinforcing plate to inlay in the shock attenuation obturator, the inner wall and the outer wall of annular reinforcing plate circumference respectively are fixed with a plurality of support archs, the support arch is located in the shock attenuation obturator.

Preferably, the shell includes first body, second body and the third body of from top to bottom rigid coupling in proper order, photomultiplier wears to locate between first body, the second body, the internal diameter of first body with the external diameter looks adaptation of photomultiplier tail end, the internal diameter of second body is greater than photomultiplier's external diameter, the clearance is located between second body and the photomultiplier.

Preferably, the sealing assembly comprises a first sealing ring, the first sealing ring is fixed at the outer edge of the bottom opening of the second tube body, a second sealing ring is fixed on the top surface of the first sealing ring, the aperture of the first sealing ring is smaller than that of the second sealing ring, the connection part of the photomultiplier and the upper end face of the scintillation crystal is sleeved in the first sealing ring, and the head end of the photomultiplier is sleeved in the second sealing ring.

Preferably, the outer side of the scintillation crystal is coated with a polytetrafluoroethylene tape, the polytetrafluoroethylene tape is bonded in the third tube body through resin, and an elastic part is arranged at the bottom of the scintillation crystal.

Preferably, the elastic component includes the fixed plate, the fixed plate is located scintillation crystal's bottom, set up flutedly on the top surface of fixed plate, be fixed with a plurality of spring, a plurality of on the diapire of recess the top rigid coupling of spring has the backup pad, the backup pad with scintillation crystal's lower terminal surface contact is connected.

Preferably, the outside cover of third body is equipped with the protective sheath, the protective sheath with it has the bradyseism to bond between the third body.

Preferably, the tail end of the photomultiplier penetrates through the first tube body, the tail end of the photomultiplier is provided with a plurality of pins, and the pins extend out of the first tube body.

Preferably, the scintillation crystal is a lanthanum bromide crystal.

The utility model discloses a following technological effect: fill the shock attenuation obturator between shell and photomultiplier for when the shell receives stress impact, the shock attenuation obturator can play the cushioning effect, plays good guard action to photomultiplier, by annular reinforcing plate, support bellied mating reaction and strengthen the support to the shock attenuation obturator, establishes seal assembly through the junction cover at scintillation crystal and photomultiplier, improves the sealing performance between the component, can reduce the moisture influence, the utility model discloses wholly improved the impact resistance and the sealing performance of detector, strengthened simultaneously and prevented the moisture absorption performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural view of the impact-resistant and moisture-absorption-proof scintillation crystal detector of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

wherein, 1 is the scintillation crystal, 2 is photomultiplier, 4 is the shock attenuation obturator, 5 is the annular reinforcing plate, 6 is the support arch, 7 is first body, 8 is the second body, 9 is the third body, 10 is first sealing ring, 11 is the second sealing ring, 13 is the polytetrafluoroethylene area, 14 is the resin, 15 is the fixed plate, 16 is the recess, 17 is the spring, 18 is the backup pad, 19 is the protective sheath, 20 is the bradyseism and glues, 21 is the pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1-2, the utility model provides a scintillation crystal detector of moisture absorption is prevented in shock-resistant, including the shell, be equipped with scintillation crystal 1 and photomultiplier 2 in the shell, the up end of scintillation crystal 1 with photomultiplier 2 coupling realizes the coupling between photomultiplier 2 and the scintillation crystal 1 and encapsulates in the shell, scintillation crystal 1 with photomultiplier 2 junction outside cover is equipped with seal assembly, seal assembly provides the sealing effect to scintillation crystal 1 and photomultiplier 2 junction;

the shell with clearance intussuseption between the photomultiplier 2 is filled with the shock attenuation obturator 4, and the shock attenuation obturator 4 is the foam, 4 circumference cladding of shock attenuation obturator are in photomultiplier 2's the outside, the embedded annular reinforcing plate 5 that is equipped with of shock attenuation obturator 4 for provide inside support to shock attenuation obturator 4, the inner wall and the outer wall of annular reinforcing plate 5 circumference respectively are fixed with a plurality of support archs 6, support archs 6 is located in the shock attenuation obturator 4, support archs 6 plays some supporting role in shock attenuation obturator 4.

Further optimize the scheme, the shell is including first body 7, second body 8 and the third body 9 of from top to bottom rigid coupling in proper order, photomultiplier 2 wears to locate between first body 7, the second body 8, the internal diameter of first body 7 with the external diameter looks adaptation of photomultiplier 2 tail end, the internal diameter of second body 8 is greater than photomultiplier 2's external diameter, the clearance is located between second body 8 and photomultiplier 2, 2 tail end parts of photomultiplier and the laminating of first body 7 inside wall, main part are in second body 8, are wrapped it by the shock attenuation obturator.

In a further optimized scheme, the sealing assembly comprises a first sealing ring 10, the first sealing ring 10 is fixed at the outer edge of the bottom opening of the second pipe body 8, a second sealing ring 11 is fixed on the top surface of the first sealing ring 10, the aperture of the first sealing ring 10 is smaller than that of the second sealing ring 11, the joint of the photomultiplier 2 and the upper end face of the scintillation crystal 1 is sleeved in the first sealing ring 10, the head end of the photomultiplier tube 2 is sleeved in the second sealing ring 11, in the prior art, only the scintillation crystal 1 and the photomultiplier tube 2 are generally inserted into the shell in sequence for packaging, but a gap of several millimeters exists between the inner wall of the shell and the scintillation crystal 1 and between the inner wall of the shell and the photomultiplier tube 2, so that moisture is easily introduced, in the embodiment, the first sealing ring 10 and the second sealing ring 11 are adopted to provide a sealing effect for the connection between the scintillation crystal 1 and the photomultiplier tube 2 under the matching effect.

Further optimize the scheme, scintillation crystal 1's outside cladding has polytetrafluoroethylene area 13, polytetrafluoroethylene area 13 bonds through resin 14 in the third body 9, scintillation crystal 1's bottom is equipped with the elastic component, chooses polytetrafluoroethylene area 13 for use to carry out closely the parcel to crystal 1 side for two terminal surfaces expose about the crystal.

Further optimize the scheme, the elastic component includes fixed plate 15, fixed plate 15 is located scintillation crystal 1's bottom, seted up recess 16 on fixed plate 15's the top surface, be fixed with a plurality of spring 17, a plurality of on recess 16's the diapire the top rigid coupling of spring 17 has backup pad 18, backup pad 18 with scintillation crystal 1's lower terminal surface contact is connected, when receiving external force to influence, utilizes backup pad 18 and spring 17's elastic action to play the bradyseism effect to scintillation crystal 1.

Further optimization scheme, the outside cover of third body 9 is equipped with protective sheath 19, protective sheath 19 with it has bradyseism to bond between the third body 9 and glues 20, and bradyseism is glued 20 and is the silica gel material, utilizes the elasticity based on silica gel self to play the bradyseism effect to third body 9, plays good guard action to its inside scintillation crystal.

In a further optimized scheme, the tail end of the photomultiplier tube 2 penetrates through the first tube body 7, the tail end of the photomultiplier tube 2 is provided with a plurality of pins 21, the pins 21 extend out of the first tube body 7, the pins 9 are distributed in an annular array, and the number of the pins is preferably 14.

In a further optimized scheme, the scintillation crystal 1 is a lanthanum bromide crystal.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims (8)

1. The utility model provides a scintillation crystal detector of moisture absorption is prevented to shock-resistant, includes the shell, be equipped with scintillation crystal (1) and photomultiplier (2) in the shell, its characterized in that: the upper end face of the scintillation crystal (1) is coupled with the photomultiplier (2), and a sealing component is sleeved outside the joint of the scintillation crystal (1) and the photomultiplier (2);

the shell with clearance intussuseption between photomultiplier (2) is filled with shock attenuation obturator (4), shock attenuation obturator (4) circumference cladding is in the outside of photomultiplier (2), the embedded annular reinforcing plate (5) that is equipped with in shock attenuation obturator (4), the inner wall and the outer wall of annular reinforcing plate (5) circumference are fixed with a plurality of support arch (6) respectively, support arch (6) are located in shock attenuation obturator (4).

2. The impact-resistant moisture absorption resistant scintillation crystal detector of claim 1, wherein: the shell is including first body (7), second body (8) and third body (9) of from top to bottom rigid coupling in proper order, photomultiplier (2) wear to locate between first body (7), second body (8), the internal diameter of first body (7) with the external diameter looks adaptation of photomultiplier (2) tail end, the internal diameter of second body (8) is greater than the external diameter of photomultiplier (2), the clearance is located between second body (8) and photomultiplier (2).

3. The impact-resistant moisture absorption resistant scintillation crystal detector of claim 2, wherein: the sealing assembly comprises a first sealing ring (10), the first sealing ring (10) is fixed at the outer edge of a bottom opening of the second pipe body (8), a second sealing ring (11) is fixed on the top surface of the first sealing ring (10), the aperture of the first sealing ring (10) is smaller than that of the second sealing ring (11), the photomultiplier (2) is sleeved with the joint of the upper end surface of the scintillation crystal (1) in the first sealing ring (10), and the head end of the photomultiplier (2) is sleeved in the second sealing ring (11).

4. The impact-resistant moisture absorption resistant scintillation crystal detector of claim 2, wherein: the outer side of the scintillation crystal (1) is coated with a polytetrafluoroethylene tape (13), the polytetrafluoroethylene tape (13) is bonded in the third tube body (9) through resin (14), and the bottom of the scintillation crystal (1) is provided with an elastic piece.

5. The impact-resistant moisture absorption resistant scintillation crystal detector of claim 4, wherein: the elastic component includes fixed plate (15), fixed plate (15) are located the bottom of scintillation crystal (1), set up on the top surface of fixed plate (15) recess (16), be fixed with a plurality of spring (17) on the diapire of recess (16), a plurality of the top rigid coupling of spring (17) has backup pad (18), backup pad (18) with the lower terminal surface contact of scintillation crystal (1) is connected.

6. The impact-resistant moisture absorption resistant scintillation crystal detector of claim 2, wherein: the outside cover of third body (9) is equipped with protective sheath (19), protective sheath (19) with it has bradyseism glue (20) to bond between third body (9).

7. The impact-resistant moisture absorption resistant scintillation crystal detector of claim 2, wherein: the tail end of the photomultiplier (2) penetrates through the first tube body (7), the tail end of the photomultiplier (2) is provided with a plurality of pins (21), and the pins (21) extend out of the first tube body (7).

8. The impact-resistant moisture absorption resistant scintillation crystal detector of claim 1, wherein: the scintillation crystal (1) is a lanthanum bromide crystal.

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