CN-115465565-B - Calorimeter measuring cup cover for automatic operation and assembling method thereof

CN115465565BCN 115465565 BCN115465565 BCN 115465565BCN-115465565-B

Abstract

The invention relates to a cup cover of a calorimeter measuring cup for automatic operation and an assembly method thereof. The cup cover comprises an upper cover (01), a middle cover (02) and a lower cover (03) which are sequentially sleeved, wherein the upper cover (01) is provided with a mushroom head (010) for automatic operation, and the upper cover (01) is of an integrated structure. The upper cover (01) is of a structure with a wide upper part and a narrow lower part, and the outer edge of the upper cover forms taper. The upper cover (01) is made of the same material as the main body of the calorimeter. The material strength of the upper cover (01) is greater than that of the middle cover (02). Compared with the prior art, the invention has the advantages of ensuring the tightness and heat transfer stability of the calorimeter cup, meeting the convenience of automatic operation and the like.

Inventors

CHEN XIAOJIE
LIU JUN
LU NA
He Runhu
CHEN MING
HU XIWEI
LIU JUN
REN JUNYONG
CHEN YONGHONG
ZHU YONGQING
PEI HAIJUN
ZHANG LI
GAO JUAN
LIU DAWEI
LIU SHOUWANG
ZUO JIANG

Assignees

中核四0四有限公司

Dates

Publication Date: 20260508
Application Date: 20220915

Claims (1)

1. The assembly method of the cup cover of the calorimeter measuring cup for the automatic operation is characterized in that the cup cover comprises an upper cover (01), a middle cover (02) and a lower cover (03) which are sequentially sleeved, wherein a mushroom head (010) for the automatic operation is arranged on the upper cover (01), and the upper cover (01) is of an integrated structure; the lower cover (03) is sleeved in the middle cover (02), and the middle cover (02) is sleeved in the upper cover (01); the outer diameter of the middle cover (02) is equal to the inner diameter of the groove of the upper cover (01), and the outer diameter of the lower cover (03) is equal to the inner diameter of the groove of the middle cover (02); the upper cover (01) is of a structure with a wide upper part and a narrow lower part, the outer edge of the upper cover forms taper, and the middle cover forms a semi-surrounding structure; the material of the upper cover (01) is consistent with that of the main body of the calorimeter; The material strength of the upper cover (01) is greater than that of the middle cover (02); The upper cover (01) and the lower cover (03) are made of T2 copper, and the middle cover (02) is made of ABS; The assembly method of the cup cover of the calorimeter measuring cup for the automatic operation specifically comprises the following steps: The method comprises the steps of assembling an upper cover (01) and a middle cover (02), namely heating the upper cover (01), cooling the middle cover (02), quickly assembling the upper cover (01) and the middle cover (02), and recovering to normal temperature to form interference fit, wherein the heating temperature of the upper cover (01) is 90-100 ℃, the heating time is more than or equal to 30min, and the cooling temperature of the middle cover (02) is minus 30-18 ℃; The method comprises the steps of assembling a middle cover (02) and a lower cover (03), namely heating the assembled upper cover (01) and the middle cover (02), cooling the lower cover (03), rapidly assembling the lower cover (03) into the middle cover (02), and recovering to normal temperature to form interference fit, wherein the heating temperature of the upper cover (01) and the middle cover (02) is 90-100 ℃, the heating time is more than or equal to 30min, and the cooling temperature of the lower cover (03) is minus 196-180 ℃.

Description

Calorimeter measuring cup cover for automatic operation and assembling method thereof Technical Field The invention relates to the field of automatic measurement of radioactive materials, in particular to a cup cover of a calorimeter measuring cup for automatic operation and an assembly method thereof. Background In the calorimeter for automatic operation, the cup cover of the calorimeter is used as a movable piece which needs to be operated frequently, the structural design and the processing quality of the calorimeter need to ensure the operability of the calorimeter in the automatic grabbing process, and meanwhile, the stability of a thermal channel of the temperature between a calorimeter cup and a calorimeter is ensured under the condition of realizing automatic action, so that the accuracy of a measuring result is ensured. The cup cover of the calorimeter consists of three layers of materials with different heat transfer coefficients, wherein in the calorimeter, the lower cup cover needs to be consistent with the material of the calorimeter cup, and the upper cup cover needs to be consistent with the material of the calorimeter body. The cup cover insulating material used by the existing calorimeter uses the foam board as the heat insulating material, in the existing dynamic K value calorimeter, the cup cover is redesigned, ABS is used for replacing the foam board, the three layers of cup covers are connected together by the plastic connecting rod, and the operation convenience is greatly improved, and the schematic diagram is shown in figure 2. As shown in fig. 2, the three layers of cup covers are connected through plastic connecting rods, and the upper cover and the lower cover are made of metal and the middle cover is made of ABS (acrylonitrile butadiene styrene) due to different materials of the layers. The linear thermal expansion coefficient of copper is 17 multiplied by 10 -6/K at 20 ℃, the linear thermal expansion coefficient of ABS is between (36-98) multiplied by 10 -6/K, and a large difference exists between the two materials. In order to ensure the stability of the heat transfer channel of the calorimeter, the assembly gap between the cup cover and the thermostat body is as small as possible, the diameter processing precision of the cup cover and the thermostat body is generally controlled to be 0.02mm, and the cup cover is easy to be blocked due to the difference of thermal expansion coefficients. The phenomenon that the cup cover cannot be taken out often occurs during manual operation, and under the condition of automatic operation, the cup cover clamping stagnation can cause a robot to directly pull out the cup cover handle, so that equipment is damaged. Meanwhile, as the calorimeter has strict requirements on a heat transfer channel, the diameter tolerance of the cup cover is in the order of 0.02mm, and the repeated positioning precision of the automatic operation robot of the calorimeter is in the order of 0.2mm, the cup cover cannot be accurately covered by automatic operation. Disclosure of Invention The invention aims to overcome at least one of the defects in the prior art and provide the calorimeter measuring cup cover for the automatic operation and the assembly method thereof, which ensure the tightness and the heat transfer stability of the calorimeter cup and simultaneously meet the convenience of the automatic operation. The aim of the invention can be achieved by the following technical scheme: The cup cover comprises an upper cover, a middle cover and a lower cover which are sequentially sleeved, wherein the upper cover is provided with a mushroom head for automatic operation, and the upper cover is of an integrated structure. Increase handle intensity, reduce the risk that the bowl cover jamming caused the handle fracture. In the cup cover taking and placing process, in order to reduce errors introduced by the cup cover placing position, operation times are required to be reduced, the cup cover taking and placing operation difficulty is reduced, the existing upper, middle and lower three cup covers of the cup cover of the calorimeter are assembled to form a whole, three-layer cup cover taking and placing work can be completed only once during operation, and the measuring performance of the instrument is not reduced. Further, the lower cover is sleeved in the middle cover, and the middle cover is sleeved in the upper cover. The upper cover forms a semi-surrounding structure with the middle cover. The middle cover and the lower cover also form a semi-surrounding structure. Further, the outer diameter of the middle cover is equal to the inner diameter of the upper cover groove, and the outer diameter of the lower cover is equal to the inner diameter of the middle cover groove. Further, the upper cover is of a structure with a wide upper part and a narrow lower part, and the outer edge of the upper cover forms taper. About 2 deg.. When the cup cover is placed, the cup cover