Gas method true density tester sample chamber

Abstract

The utility model belongs to the technical field of gas method true density testing, in particular relates to a sample chamber of a gas method true density tester, and aims to solve the problems that in the prior art, the sample chambers of the gas method true density tester are different in design, but gas cannot be better ensured to uniformly pass through narrow gaps during gas suction and gas inflow, and the test efficiency is low. In order to solve the problems, the utility model provides the following scheme: the device comprises a base; the sample cell is fixedly mounted on the base, a sample chamber is arranged in the sample cell, and a sample cell cover is arranged at the top of the sample cell; the sample body is placed in the sample chamber, an airflow gap is formed between the sample cell and the sample chamber, an exhaust port is formed in the right side of the sample cell, and a vacuum system is fixedly arranged at one end of the top of the base. The device is simple in structure, can quickly test the true density of powder and blocky solids, improves the accuracy and repeatability of the true density test, and is convenient for people to use.

Description

Technical Field

[0001] The utility model relates to the technical field of gas method true density testing, in particular to a sample chamber of a gas method true density tester. Background Art

[0002] A gas-based true density tester is an experimental device used to measure the true density of materials (such as metals and ceramics). Its sample chamber, as the core component in the test process, undertakes the critical task of accommodating and securing the sample to be tested.

[0003] In the prior art, the sample chamber designs of gas-based true density testers vary, but they cannot better ensure that the gas can pass through the narrow gap evenly during the exhaust and intake air flows, thus affecting the accuracy of the test. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that the sample chambers of gas method true density testers are designed differently, but cannot better ensure that the gas can pass through the narrow gap evenly during the exhaust and intake air flows, thereby affecting the accuracy of the test, and to propose a sample chamber for a gas method true density tester.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sample chamber of a gas method true density tester, comprising:

[0007] base;

[0008] A sample pool is fixedly mounted on the base, wherein a sample chamber is provided in the sample pool and a sample pool cover is provided on the top of the sample pool;

[0009] The sample body is placed in the sample chamber, and an air flow gap is provided between the sample pool and the sample chamber.

[0010] Furthermore, an exhaust port is provided on the right side of the sample pool, and a vacuum system is fixedly provided on one end of the top of the base.

[0011] Furthermore, a pressure detection component and a standard cavity are provided in the vacuum system, an air outlet pipe is connected between the vacuum system and the exhaust port, and the pressure detection component can detect the gas pressure in the sample chamber.

[0012] Furthermore, a pressure equalizing groove is provided on the sample chamber, and the pressure equalizing groove is used to balance the exhaust and intake air flows.

[0013] Furthermore, an air inlet is provided on the left side of the sample pool, and the air inlet is communicated with the air flow gap.

[0014] Furthermore, the gas inlet is connected to an air intake pipe, and there is high-pressure gas in the air intake pipe.

[0015] Furthermore, a valve is provided on the air intake pipe for controlling the amount of gas entering the air intake pipe.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] This solution sets up a pressure equalizing groove, which balances the exhaust and intake air flows through the equalizing groove ring, so that the gas in the sample chamber flows evenly through a very narrow airflow gap, which can reduce the disturbance of the intake and exhaust airflows on the sample. The heat conduction effect in the process of the airflow fully contacting the surface of the sample chamber and sample pool through the very narrow airflow gap balances the gas temperature.

[0018] The utility model has a simple structure, can quickly test the true density of powders and block solids, improves the accuracy and repeatability of the true density test, and is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention provides a schematic structural diagram of a sample chamber of a gas method true density tester.

[0020] In the figure: 1. High-pressure gas; 2. Valve; 3. Gas inlet; 4. Pressure equalization tank; 5. Air flow gap; 6. Sample cell cover; 7. Sample chamber; 8. Sample body; 9. Pressure detection component; 10. Exhaust port; 11. Sample cell; 12. Vacuum system; 13. Base. DETAILED DESCRIPTION

[0021] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all the embodiments.

[0022] Example

[0023] Reference Figure 1 , a sample chamber of a gas method true density tester, comprising:

[0024] Base 13;

[0025] The sample pool 11 is fixedly mounted on the base 13. The sample pool 11 is provided with a sample chamber 7. The top of the sample pool 11 is provided with a sample pool cover 6. The sample pool cover 6 can seal the sample pool 11.

[0026] The sample body 8 is placed in the sample chamber 7 . An airflow gap 5 is provided between the sample pool 11 and the sample chamber 7 , and airflow can flow through the airflow gap 5 .

[0027] In this embodiment, an exhaust port 10 is provided on the right side of the sample pool 11 , and a vacuum system 12 is fixedly provided at one end of the top of the base 13 , and the vacuum system 12 can extract the gas in the sample chamber 7 .

[0028] In this embodiment, a pressure detection component 9 and a standard cavity are provided in the vacuum system 12 . An air outlet pipe is connected between the vacuum system 12 and the exhaust port 10 . The pressure detection component 9 can detect the gas pressure in the sample chamber 7 .

[0029] In this embodiment, a pressure equalizing groove 4 is provided on the sample chamber 7, and the pressure equalizing groove 4 is used to equalize the exhaust and intake air flows.

[0030] In this embodiment, an air inlet 3 is provided on the left side of the sample pool 11, and the air inlet 3 is communicated with the air flow gap 5. The air inlet 3 is connected to an air inlet pipe, and there is high-pressure gas 1 in the air inlet pipe. A valve 2 is provided on the air inlet pipe for controlling the amount of gas entering the air inlet pipe.

[0031] The implementation principle of the sample chamber of a gas method true density tester in the embodiment of the present application is as follows: first, during the true density test, the sample 8 placed in the sample chamber 7 must be evacuated by using the vacuum system 12, and then the pressure P0 in the sample chamber 7 at this time must be tested by the pressure detection component 9, and then the high-pressure gas 1 is transported through the air inlet 3 to the air flow gap 5 between the sample pool 11 and the sample chamber 7 through the air inlet pipe, and the high-pressure gas 1 is poured into the sample chamber 7 through the air flow gap 5, and the exhaust and intake air flows are balanced by the provided pressure equalization groove 4, so that the gas in the sample chamber 7 flows evenly in the very narrow air flow gap 5. This structure can reduce the impact of the intake and exhaust air flows on the sample chamber 7. The disturbance of the sample, the heat conduction effect of the airflow in the process of full contact with the surface of the sample chamber 7 and the sample pool 11 through the very narrow airflow gap 5, and the balanced gas temperature are beneficial to improving the accuracy and repeatability of the true density test. The pressure P1 at this time is tested by the pressure detection component 9, and then the high-pressure gas 1 injected into the sample chamber 7 is placed in the standard cavity to test the balanced pressure P2. Finally, the true density is calculated based on the pressures of these three states and the volumes of the sample chamber 7 and the standard cavity. All structures in this application can be selected in terms of material and length according to actual usage. The accompanying drawings are all schematic structural diagrams, and the specific actual dimensions can be adjusted appropriately.

[0032] The above is only a preferred specific implementation method of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solution and utility model concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A sample chamber of a gas method true density tester, characterized in that: include: Base (13); A sample pool (11) is fixedly mounted on the base (13), wherein a sample chamber (7) is provided in the sample pool (11), and a sample pool cover (6) is provided on the top of the sample pool (11); The sample body (8) is placed in the sample chamber (7), and an air flow gap (5) is provided between the sample pool (11) and the sample chamber (7).

2. The sample chamber of a gas method true density tester according to claim 1, characterized in that: An exhaust port (10) is provided on the right side of the sample pool (11), and a vacuum system (12) is fixedly provided on one end of the top of the base (13).

3. The sample chamber of a gas method true density tester according to claim 2, characterized in that: The vacuum system (12) is provided with a pressure detection component (9) and a standard cavity, and an air outlet pipe is connected between the vacuum system (12) and the exhaust port (10).

4. The sample chamber of a gas method true density tester according to claim 1, characterized in that: The sample chamber (7) is provided with a pressure equalizing groove (4), and the pressure equalizing groove (4) is used to equalize the exhaust and intake air flows.

5. The sample chamber of a gas method true density tester according to claim 1, characterized in that: An air inlet (3) is provided on the left side of the sample pool (11), and the air inlet (3) is communicated with the air flow gap (5).

6. The sample chamber of a gas method true density tester according to claim 5, characterized in that: The gas inlet (3) is connected to an air intake pipe, and high-pressure gas (1) is contained in the air intake pipe.

7. The sample chamber of a gas method true density tester according to claim 6, characterized in that: The air intake pipe is provided with a valve (2) for controlling the amount of gas entering the air intake pipe.

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