Reusable sealed sample pool

Abstract

The invention discloses a reusable sealed sample cell which is convenient to operate, good in reusability, long in service life and suitable for most of materials, a nut cover is screwed downwards through cooperation of an internal thread and an external thread, a sealing ring is deformed through applied pressure, a gap between the nut cover and the sealing ring is filled with the sealing ring, and gas sealing can be effectively achieved.

Description

Technical Field

[0001] This application relates to a reusable sealed sample cell, belonging to the field of calorimetric measurement devices. Background Technology

[0002] Heat capacity refers to the energy absorbed or released by a material when the temperature changes by one degree. Currently, there are three main methods for accurately measuring the heat capacity of condensed matter at low temperatures: relaxation calorimetry, alternating current calorimetry, and adiabatic calorimetry. Relaxation calorimetry is only applicable to powder samples, which to some extent limits its applicability in different material states. When dealing with materials with poor thermal conductivity, alternating current calorimetry is difficult to ensure the accuracy of the measurement results, which limits its widespread application.

[0003] In contrast, adiabatic calorimetry has a wider measurement range, applicable to the vast majority of condensed matter and has high measurement accuracy. To ensure the universality of adiabatic calorimetry, almost all adiabatic calorimetry devices use a sample cell to hold the sample to be tested. Therefore, the sealing of the sample cell is crucial. Once the sample cell seal fails, the reliability of the measurement results will be significantly affected.

[0004] The currently widely used sealing method uses gaskets and blades for sealing. This method has certain limitations. For example, when the blade comes into contact with the gasket, it will cause scratches at different locations, which will affect the reusability of the gasket. In addition, the blade has a short service life, which also reduces its economy and practicality. Summary of the Invention

[0005] According to one aspect of this application, a reusable sealed sample cell is provided, comprising a cylindrical body, a nut cap, and a sealing ring;

[0006] The inner wall of the nut cap is provided with internal threads;

[0007] The cylindrical body comprises two integrally formed upper and lower cylinders, wherein the diameter of the upper cylinder is smaller than that of the lower cylinder;

[0008] The outer surface of the upper cylinder is provided with an external thread that matches the internal thread of the nut cap;

[0009] The upper surface of the lower cylinder is provided with an annular groove, and the sealing ring is fixed on the groove;

[0010] The diameter of the sealing ring is not less than the width of the groove.

[0011] Optionally, the diameter of the sealing ring is set to 0.5 mm, and the width of the groove is set to 0.3 to 0.4 mm.

[0012] During use, the sealing ring is placed in the groove between the nut cap and the upper surface of the sample cell lower cylinder. The nut cap is screwed down by the engagement of the internal and external threads, and the applied pressure deforms the sealing ring, thereby achieving a reliable seal of the sample cell.

[0013] Optionally, the sealing ring is made of a metal material, which needs to have good ductility and low temperature resistance.

[0014] Optionally, the sealing ring is made of one of the following materials: indium, tin, lead, aluminum, aluminum alloy, copper, or copper alloy.

[0015] Optionally, the height of the internal thread is greater than the height of the external thread.

[0016] 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.

[0017] When the nut cap is screwed into the upper cylinder through the thread, the nut cap can fully fit the upper cylinder, ensuring that the lower surface of the nut cap and the upper surface of the lower cylinder can fit tightly together to achieve a seal.

[0018] The beneficial effects that this application can produce include:

[0019] The reusable sealed sample cell provided in this application is easy to operate, has good reusability, long service life, and is applicable to most materials. By screwing the nut cap downward through the cooperation of the internal and external threads, the applied pressure deforms the sealing ring, and the sealing ring fills the gap between them, which can effectively achieve gas sealing. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the sample cell provided in one embodiment of this application;

[0021] Figure 2 This is a front view of the sample cell provided in one embodiment of this application;

[0022] Figure 3 For this application Figure 2 A cross-sectional view along the AA direction.

[0023] List of components and reference numerals:

[0024] 1. Cylinder body; 2. Groove; 3. Upper cylinder; 4. Sealing ring; 5. Nut cap; 6. Internal thread; 7. Lower cylinder. Detailed Implementation

[0025] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0026] Example 1

[0027] like Figures 1-3 As shown, according to one embodiment of this application, a reusable sealed sample cell is provided, including a cylindrical body 1, a nut cap 5, and a sealing ring 4;

[0028] The inner wall of the nut cap 5 is provided with internal threads 6;

[0029] The cylinder 1 includes two integrally formed upper and lower cylinders, wherein the diameter of the upper cylinder 3 is smaller than that of the lower cylinder 7.

[0030] The outer surface of the upper cylinder 3 is provided with an external thread that matches the internal thread 6 of the nut cap 5;

[0031] The height of the internal thread 6 is greater than the height of the external thread;

[0032] The height of the external thread is 4.5 mm, and the height of the internal thread 6 is 5 mm.

[0033] When the nut cap 5 is screwed into the upper cylinder 3 by the thread, the nut cap 5 can fully fit the upper cylinder 3, ensuring that the lower surface of the nut cap 5 and the upper surface of the lower cylinder 7 can fit tightly together to achieve a seal.

[0034] The upper surface of the lower cylinder 7 is provided with an annular groove 2, the width of the groove 2 is 0.3 to 0.4 mm, and the sealing ring 4 is fixed on the groove 2;

[0035] The diameter of the sealing ring 4 is not less than the diameter of the groove 2.

[0036] In use, the sealing ring 4 is placed in the groove 2, located between the nut cap 5 and the upper surface of the sample cell lower cylinder 7. The nut cap 5 is screwed down by the cooperation of the internal thread 6 and the external thread. The applied pressure deforms the sealing ring 4, thereby achieving a reliable seal of the sample cell.

[0037] The sealing ring 4 is made of indium, which has good ductility and low temperature resistance. The diameter of the indium wire is 0.5 mm, which is greater than the width of the groove 2.

[0038] The above description is only a part of the embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and all fall within the scope of the technical solution.

Claims

1. A reusable sealed sample cell, characterized in that, Includes the cylinder body, nut cap, and sealing ring; The inner wall of the nut cap is provided with internal threads; The cylindrical body comprises two integrally formed upper and lower cylinders, 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 an external thread that matches the internal thread of the nut 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 less than the width of the groove.

2. The reusable sealed sample cell according to claim 1, characterized in that, The diameter of the sealing ring is set to 0.5 mm, and the width of the groove is set to 0.3 to 0.4 mm.

3. A reusable sealed sample cell according to any one of claims 1 or 2, characterized in that, The sealing ring is made of metal.

4. A reusable sealed sample cell according to claim 3, characterized in that, The sealing ring is made of one of the following materials: indium, tin, lead, aluminum, aluminum alloy, copper, or copper alloy.

5. A reusable sealed sample cell according to claim 1, characterized in that, The height of the internal thread is greater than the height of the external thread.

6. A reusable sealed sample cell according to claim 5, characterized in that, The height of the external thread is set to 4.5 mm, and the height of the internal thread is set to 5 mm.

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