Measuring support for alanine dosimeter

Abstract

The utility model relates to a measuring bracket for an alanine dosimeter. The measuring bracket comprises a fixed seat and a glass tube matched with the fixed seat, the lower part of the fixed seat is provided with an intracavitary catheter communicated with the fixed seat, the bottom of the intracavitary catheter is provided with a blocking block, and a cap matched with the fixed seat is arranged above the fixed seat; and a protective sleeve is sleeved outside the glass tube. During use, the fixing seat and the intracavity conduit are mounted on an electron spin resonance spectrometer through screws, the protective sleeve is used for clamping a glass tube and placing the glass tube on the fixing seat, the barrier block is used for limiting the bottom of the glass tube, and the cap is used for further fixing the top of the glass tube. The glass tube is fixed in the cavity in the fixed seat, and is kept at a fixed position in the whole detection process without displacement, so that the detection precision during detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation processing dose measurement, and specifically relates to a measurement bracket for an alanine dosimeter. Background Art

[0002] After decades of development, radiation processing is a mature modern process technology. Compared with sterilization technologies such as high temperature and ethylene oxide, radiation sterilization has the advantages of good penetrability, being able to be carried out at room temperature, no residue, easy to control, etc. It is a green and efficient processing method and has been widely used in aspects such as irradiation sterilization of healthcare products, irradiation preservation of food, and irradiation modification of polymer materials.

[0003] During the irradiation processing, if the irradiation dose is insufficiently implemented, the product will not meet its specified sterility assurance level; while if the irradiation dose is exceeded, it will affect the safety of the product. Therefore, the irradiation dose is a key factor in irradiation quality control during radiation processing, and an appropriate dose measurement system must be selected to ensure the accuracy of the absorbed dose of the product after irradiation. After being irradiated, the alanine dosimeter generates stable free radicals, and the number of which has a significant function with the absorbed dose, and it is defined as a reference standard-level dosimeter. The alanine dosimeter has the advantages of a wide measurement range, stability, good measurement repeatability, non-destructive measurement, good applicability, and small uncertainty, and is very suitable for monitoring the absorbed dose of products during radiation processing.

[0004] The alanine dosimeter for industrial irradiation is in the shape of a pill, and an electron spin resonance spectrometer can be used to measure the free radical concentration in the alanine dosimeter after irradiation, which has the advantages of good accuracy and high stability. To ensure the accuracy of the measurement results, the alanine dosimeter needs to maintain a fixed posture during the measurement process and be accurately fixed in the resonance cavity of the electron spin resonance spectrometer, but the prior art cannot meet this standard, bringing a lot of inconvenience to the measurement process and reducing the measurement efficiency and accuracy.

[0005] Therefore, designing a suitable measurement bracket is crucial for the accuracy of the measurement results. Summary of the Invention

[0006] The purpose of the utility model is to provide an improved measurement bracket for an alanine dosimeter. Through structural improvement, a glass tube and a matching fixing seat are used to accurately and repeatedly fix the alanine dosimeter in the resonance cavity of the electron spin resonance spectrometer, effectively improving the detection accuracy and convenience.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a measuring bracket for an alanine dosimeter, characterized in that: the measuring bracket includes a fixing seat and a glass tube matched with the fixing seat; the lower part of the fixing seat is provided with an intracavitary catheter connected with it, the bottom of the intracavitary catheter is provided with a blocking block, and the top of the fixing seat is provided with a cap matched with it; the outer sleeve of the glass tube is provided with a protective sleeve.

[0008] Preferably, the top of the glass tube is provided with an outwardly expanded curling edge, and the bottom of the glass tube is provided with an exhaust hole.

[0009] Furthermore, the protective cover is a hollow cylindrical body with closed ends at both ends. The closed ends are provided with at least one expansion groove, which passes through the closed ends and extends to the cylindrical body part, so that the closed ends can hold the glass tube, and the diameter of the closed ends is smaller than the diameter of the glass tube.

[0010] Furthermore, the fixing seat is clamped in a fixing plate, a mounting portion is provided on the top of the fixing seat, an external thread is provided on the surface of the mounting portion, and the cover cap is provided with an internal thread matching the external thread.

[0011] Furthermore, a group of screws for fixing is provided on the fixing plate, and the screws are arranged on both sides of the fixing seat. The fixing seat is made of brass, and a stepped cylindrical structure extending downward is provided at the lower part of the fixing seat.

[0012] Furthermore, a catheter fixing hole is provided at the bottom of the stepped cylindrical structure, and the end of the intracavitary catheter is fixed in the catheter fixing hole.

[0013] Compared with the prior art, the technical solution of the utility model not only improves the overall technical solution, but also includes many improvements in details. Specifically, it has the following beneficial effects:

[0014] 1. The improved scheme of the utility model, the measuring bracket comprises a fixing seat and a glass tube matched with the fixing seat; the lower part of the fixing seat is provided with an intracavity catheter connected with the fixing seat, the bottom of the intracavity catheter is provided with a barrier block, and the upper part of the fixing seat is provided with a cap matched with the fixing seat, by installing the alanine dosimeter into the glass tube, and then placing the fixing seat with the glass tube fixed into the electron spin resonance spectrometer for measurement, it is ensured that the alanine dosimeter maintains a fixed posture during the measurement process, and the measurement accuracy is improved;

[0015] 2. In the technical solution of the utility model, the protective cover is a hollow cylindrical body, with closed ends at both ends, and at least one telescopic groove is provided on the closed end, which runs through the closed end and extends to the cylindrical body part, so that the closed end can clamp the glass tube, ensuring the stability of the glass tube during testing and movement, and improving the precision and accuracy of detection;

[0016] 3. In the structure of the present utility model, the glass tube is guided to the correct position through the intracavity catheter. The top of the glass tube is provided with an outward-expanded curled edge, which is convenient for loading the alanine dosimeter. The bottom of the glass tube is provided with an exhaust hole, so that the alanine dosimeter will fall naturally, and the air in the tube is discharged from the bottom small hole, which can keep the alanine dosimeter falling continuously in a fixed posture without flipping during the falling process, improving the accuracy of subsequent detection.

[0017] 4. The structure of the present utility model is simple, reasonably arranged, easy to use, and convenient for popularization and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the dispersion structure of the present utility model.

[0019] Reference Signs:

[0020] 1 Glass tube, 11 Top of the glass tube, 12 Exhaust hole;

[0021] 21 Fixed seat, 22 Intracavity catheter, 23 Protective sleeve, 24 Cap, 25 Screw, 26 Blocking block;

[0022] 211 Fixed plate, 212 External thread, 213 Step-shaped cylindrical structure;

[0023] 231 Telescopic strip, 232 Shrinkage end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] The present utility model provides a measuring bracket for an alanine dosimeter. Specifically, refer to Figure 1 , the difference from the prior art is that: the measuring bracket includes a fixed seat and a glass tube cooperating with the fixed seat; the lower part of the fixed seat is provided with an intracavity catheter communicating therewith, the bottom of the intracavity catheter is provided with a blocking block for fixing the descending position of the glass tube, and a cap cooperating with the fixed seat is provided above the fixed seat; a protective sleeve is sleeved outside the glass tube.

[0026] During use, the fixed seat together with the intracavity catheter is installed on the electron spin resonance spectrometer through screws. The protective sleeve is used to clamp the glass tube and place the glass tube on the fixed seat. The blocking block is used to limit the bottom of the glass tube, and the cap is used to further fix the top of the glass tube, so that the glass tube is fixed in the cavity of the fixed seat and remains in a fixed position during the whole detection process without displacement, improving the detection accuracy during detection.

[0027] Example 1

[0028] In this embodiment, the measuring bracket includes a fixed seat 21 and a glass tube 1 cooperating with the fixed seat; a cavity conduit 22 communicating with the lower part of the fixed seat is provided, a blocking block 26 for fixing the descending position of the glass tube is provided at the bottom of the cavity conduit, and a cap 24 cooperating with the fixed seat is provided above the fixed seat; a protective sleeve 23 is sleeved outside the glass tube for effective clamping and convenient transportation of the glass tube.

[0029] Specifically, the top end of the glass tube is provided with an outwardly expanding curled edge for facilitating the loading of the alanine dosimeter. At the same time, an exhaust hole 12 is provided at the bottom of the glass tube. After the alanine dosimeter is loaded into the glass tube, the alanine dosimeter will fall naturally, and the air in the tube will be discharged from the small hole at the bottom, which can keep the alanine dosimeter falling continuously in a fixed posture without flipping during the falling process.

[0030] The protective sleeve 23 is a hollow cylindrical barrel, and the two ends are provided with closed ends 232. At least one telescopic groove 231 is provided on the closed ends. The telescopic groove penetrates the closed ends and extends to the cylindrical barrel part, so that the closed ends can clamp the glass tube. The diameter of the closed ends is smaller than the diameter of the glass tube, which can ensure the effective clamping of the protective sleeve to the glass tube, making the glass tube relatively stable and safe both during the transportation process and during the detection process.

[0031] Furthermore, the fixed seat is clamped in a fixing plate 211. An installation part is provided at the top of the fixed seat, and an external thread 212 is provided on the surface of the installation part. The cap is provided with an internal thread matching the external thread. A set of screws for fixing are provided on the fixing plate, and the screws are arranged on both sides of the fixed seat. The fixed seat is made of brass, and a stepped cylindrical structure 213 extending downward is provided at the lower part of the fixed seat. A conduit fixing hole is provided at the bottom of the stepped cylindrical structure, and the end of the cavity conduit is fixed in the conduit fixing hole. The fixed seat together with the cavity conduit is installed on the electron spin resonance spectrometer through screws. A blocking block 26 is arranged at the bottom of the cavity conduit. The glass tube passes through the protective sleeve and is placed in the cavity conduit and stops at the blocking block, which can ensure that the position where the alanine dosimeter is located during each measurement is the same. Finally, the cap is tightened, and the entire bracket is stably fixed on the electron spin resonance spectrometer.

[0032] Scale lines are provided on the cavity conduit. The ratio of the diameter of the cylindrical barrel of the protective sleeve to the diameter of the main body of the fixed seat is 1:2 - 3.5, which can further improve the stability.

[0033] Example 2

[0034] A measuring bracket for an alanine dosimeter according to the present utility model. During daily measurement, the alanine dosimeter is picked up by tweezers and loaded into the glass tube 1 from the top 11 of the glass tube. The inner diameter of the glass tube 1 is slightly larger than that of the alanine dosimeter, and there is an exhaust hole 12 at the bottom of the glass tube. Therefore, the alanine dosimeter installed in the tube will fall naturally, and the air in the tube will be discharged through the exhaust hole 12 at the bottom of the glass tube. The alanine dosimeter will continue to fall in a fixed posture without flipping during the fall.

[0035] Fix the fixing base 21 on the electron spin resonance spectrometer through the screw 25. Clamp the glass tube 1 loaded with the alanine dosimeter through the protective sleeve 23, pass through the fixing base 21, and place it into the cavity catheter 22. Slowly place the glass tube 1 until the bottom of the glass tube 1 reaches the blocking block 26, which indicates that the alanine dosimeter has reached the fixed measurement position. Then tighten the cap 24, and the entire bracket will be stably fixed on the electron spin resonance spectrometer.

[0036] Specifically, the present utility model has the following beneficial effects:

[0037] 1. The top of the glass tube is processed with a push port and a curled edge. During daily measurement, it is convenient to load the alanine dosimeter, and it can reduce the weight loss of the alanine dosimeter caused by friction, bumping, etc., and ensure the measurement accuracy.

[0038] 2. The base includes parts such as a fixing base, a cavity catheter, a protective sleeve, and a cap. Each part has an independent function and does not affect each other.

[0039] 3. The fixing base is made of brass and is not easy to rust, which is convenient for daily maintenance. At the same time, after the fixing base and the cavity catheter are fixed with screws, it can ensure that the measurement position is the same each time.

[0040] 4. The protective sleeve is made of plastic material and is used to clamp the glass tube, which can reduce the friction when placing the glass tube and improve the service life of the glass tube.

[0041] 5. The structure of the present utility model is simple, the layout is reasonable, it is convenient to use, has a wide range of applications, has great commercial value, and is convenient for popularization and utilization.

[0042] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. A measuring bracket for an alanine dosimeter, characterized in that: The measuring bracket includes a fixing seat and a glass tube matched with the fixing seat; the lower part of the fixing seat is provided with an intracavity catheter connected with it, the bottom of the intracavity catheter is provided with a blocking block, and the upper part of the fixing seat is provided with a cap matched with it; the outer sleeve of the glass tube is provided with a protective sleeve.

2. The measuring bracket for an alanine dosimeter according to claim 1, characterized in that: The top of the glass tube is provided with an outwardly expanded curling edge, and the bottom of the glass tube is provided with an exhaust hole.

3. The measuring bracket for an alanine dosimeter according to claim 1, wherein: The protective cover is a hollow cylindrical body with closed ends at both ends. The closed ends are provided with at least one expansion groove, which runs through the closed ends and extends to the cylindrical body part, so that the closed ends can hold the glass tube. The diameter of the closed ends is smaller than the diameter of the glass tube.

4. A measuring bracket for an alanine dosimeter according to claim 1, characterized in that: The fixing seat is clamped in a fixing plate, a mounting portion is arranged on the top of the fixing seat, an external thread is arranged on the surface of the mounting portion, and the cover cap is provided with an internal thread matched with the external thread.

5. The measuring bracket for alanine dosimeter according to claim 4, characterized in that: A group of screws for fixing is arranged on the fixing plate, and the screws are arranged on both sides of the fixing seat. The fixing seat is made of brass, and a step-shaped cylinder structure extending downward is arranged at the lower part of the fixing seat.

6. The measuring bracket for an alanine dosimeter according to claim 5, characterized in that: A catheter fixing hole is arranged at the bottom of the stepped cylinder structure, and the end of the intracavitary catheter is fixed in the catheter fixing hole.

7. A measuring bracket for an alanine dosimeter according to claim 1, characterized in that: Graduation lines are arranged on the intracavitary catheter.

8. A measuring bracket for an alanine dosimeter according to claim 1, characterized in that: The ratio of the diameter of the cylindrical barrel of the protective sleeve to the diameter of the fixing seat body is 1:2-3.5.

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