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CN-121990264-A - Sealing sample pool capable of being repeatedly utilized

CN121990264ACN 121990264 ACN121990264 ACN 121990264ACN-121990264-A

Abstract

The application discloses a reusable sealed sample cell which is convenient to operate, good in reusability and long in service life, is suitable for most materials, enables a screw cap to be screwed down through the cooperation of internal threads and external threads, enables a sealing ring to deform under the applied pressure, enables the sealing ring to fill gaps between the screw cap and the screw cap, and can effectively realize gas sealing.

Inventors

  • SHI QUAN
  • FU WANXIN
  • LUO JIPENG
  • YIN NAN
  • XUE PEIHONG

Assignees

  • 中国科学院大连化学物理研究所

Dates

Publication Date
20260508
Application Date
20241108

Claims (6)

  1. 1. The reusable sealed sample cell is characterized by comprising a barrel, a screw cap and a sealing ring; the inner wall of the screw cap is provided with an internal thread; The cylinder body comprises an upper cylinder and a lower cylinder which are integrally formed, wherein the diameter of the upper cylinder is smaller than that of the lower cylinder; the outer surface of the upper cylinder is provided with external threads matched with the internal threads of the screw cap; The upper surface of the lower cylinder is provided with an annular groove, and the sealing ring is fixed on the groove; the diameter of the sealing ring is not smaller than the width of the groove.
  2. 2. The reusable sealed sample cell of claim 1, wherein the diameter of the sealing ring is set to 0.5mm and the width of the groove is set to 0.3-0.4 mm.
  3. 3. A reusable sealed sample cell according to any of claims 1 or 2, wherein the sealing ring is made of a metallic material.
  4. 4. A reusable sealed sample cell according to claim 3, wherein the sealing ring is made of one of indium, tin, lead, aluminum alloy, copper alloy.
  5. 5. The sealed reusable sample cell of claim 1, wherein the internal thread height is greater than the external thread height.
  6. 6. The sealed reusable sample cell of claim 5, wherein the height of the external threads is set to 4.5 millimeters and the height of the internal threads is set to 5 millimeters.

Description

Sealing sample pool capable of being repeatedly utilized Technical Field The application relates to a reusable sealed sample cell, and belongs to the field of calorimetric measuring devices. Background The heat capacity refers to the energy absorbed or released by a material when the temperature changes once, and currently, three methods, namely relaxation calorimetry, alternating current calorimetry and adiabatic calorimetry, are mainly adopted for accurately measuring the heat capacity of a condensed substance at a low temperature, wherein the relaxation calorimetry is only applicable to powder samples, which limits the applicability of the relaxation calorimetry in different substance states to a certain extent; In contrast, the adiabatic calorimeter is wider in measurement range, is applicable to most of condensed substances and has high measurement precision, and in order to ensure the universality of adiabatic heat measurement of a sample, the adiabatic heat measuring device almost holds the sample to be measured through a sample cell; The sealing method widely adopted at present is to seal by using a gasket and a knife edge, and the method has certain limitations, for example, the knife edge can generate scratches at different positions when contacting with the gasket, so that the reusability of the gasket is affected, the service life of the knife edge is shorter, and the economical efficiency and the practicability of the knife edge are reduced. Disclosure of Invention According to one aspect of the present application there is provided a reusable sealed sample cell comprising a barrel, a cap screw and a sealing ring; the inner wall of the screw cap is provided with an internal thread; The cylinder body comprises an upper cylinder and a lower cylinder which are integrally formed, wherein the diameter of the upper cylinder is smaller than that of the lower cylinder; the outer surface of the upper cylinder is provided with external threads matched with the internal threads of the screw cap; The upper surface of the lower cylinder is provided with an annular groove, and the sealing ring is fixed on the groove; the diameter of the sealing ring is not smaller than the width of the groove. Optionally, the diameter of the sealing ring is set to be 0.5 mm, and the width of the groove is set to be 0.3-0.4 mm. When the sealing device is used, the sealing ring is arranged in the groove and positioned between the screw cap and the upper surface of the lower cylinder of the sample cell, the screw cap is screwed down through the matching of the internal thread and the external thread, and the applied pressure deforms the sealing ring, so that the sample cell is reliably sealed. Optionally, the sealing ring is made of a metal material, and the metal material is required to have good ductility and low temperature resistance. Optionally, the sealing ring is made of one of indium, tin, lead, aluminum alloy, copper and copper alloy. Optionally, the internal thread height is greater than the external thread height. Optionally, the height of the external thread is set to 4.5 mm, and the height of the internal thread is set to 5 mm. When the screw cap is screwed with the upper cylinder through threads, the screw cap can be completely matched with the upper cylinder, so that the lower surface of the screw cap and the upper surface of the lower cylinder can be tightly attached, and sealing is realized. The application has the beneficial effects that: The reusable sealed sample cell provided by the application is convenient to operate, good in reusability and long in service life, is suitable for most materials, enables the screw cap to be screwed down through the matching of the internal threads and the external threads, enables the sealing ring to deform by the applied pressure, enables the sealing ring to fill the gap between the screw cap and the screw cap, and can effectively realize gas sealing. Drawings FIG. 1 is a schematic perspective view of a sample cell according to an embodiment of the present application; FIG. 2 is a front view of a sample cell provided in one embodiment of the application; Fig. 3 is a cross-sectional view taken along A-A in fig. 2 in accordance with the present application. List of parts and reference numerals: 1. a cylinder; 2, a groove, 3, an upper cylinder, 4, a sealing ring, 5, a screw cap, 6, an internal thread and 7, a lower cylinder. Detailed Description The present application is described in detail below with reference to examples, but the present application is not limited to these examples. Example 1 As shown in fig. 1 to 3, according to an embodiment of the present application, a reusable sealed sample cell is provided, including a cylinder 1, a screw cap 5, and a sealing ring 4; The inner wall of the screw cap 5 is provided with an internal thread 6; The cylinder body 1 comprises an upper cylinder and a lower cylinder which are integrally formed, wherein the diameter of the uppe