Gas measurement experiment device and use method thereof

Abstract

The invention discloses a gas measurement experiment device and a use method thereof, and the device comprises a cylinder barrel which is provided with an opening at one side and is sealed by a plug at the other side; the piston extends from the opening end of the cylinder barrel, and a connecting rod is arranged at one end of the piston; the air bag is arranged between the piston and the cylinder barrel, the air bag is connected with a deflation valve, an inflation valve and a monitoring interface, the inflation valve is connected with an inflator, and the monitoring interface is at least connected with a temperature sensor and a pressure sensor. And a constant-temperature sleeve is arranged outside the cylinder barrel. A distance meter is arranged at the tail end of the connecting rod and used for monitoring the moving distance of the connecting rod to obtain the volume between the plug and the piston. The system further comprises a man-machine interaction interface, data analysis and processing software is arranged in the man-machine interaction interface, the data analysis and processing software is connected with the temperature sensor, the pressure sensor and the range finder, and the data analysis and processing software draws a P-V diagram, a P-T diagram or a V-T diagram on the man-machine interaction interface through data processing. The problem that an existing gas measurement experimental device is prone to leakage, and consequently experimental data are inaccurate is solved.

Description

Technical Field

[0001] This invention relates to the field of gas experimental equipment, and more specifically to a gas measurement experimental device. Background Technology

[0002] In physics and chemistry experiments, the ideal gas law (PV=nRT) is a core concept. Experimental setups primarily utilize piston motion, which requires sealing. Current piston sealing methods mainly include: piston ring seals, elastomer seals, labyrinth seals, magnetic fluid seals, plasma-sprayed ceramic coating seals, and smart material seals. Due to cost constraints, piston ring seals and elastomer seals are currently the most commonly used. Although these seals are effective, gas leakage can still occur during compression, leading to inaccurate experimental data. Summary of the Invention

[0003] The present invention provides a gas measurement experimental device to solve the problem that existing gas measurement experimental devices are prone to leakage, resulting in inaccurate experimental data.

[0004] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a gas measurement experimental device, comprising: The cylinder has an opening on one side and is sealed on the other side by a plug. A piston extends into the cylinder from the open end, and a connecting rod is provided at one end of the piston; An airbag is disposed between the piston and the cylinder. The airbag is connected to a deflation valve, an inflation valve, and a monitoring interface. The inflation valve is connected to an inflation device, and the monitoring interface is connected to at least a temperature sensor and a pressure sensor.

[0005] As a further improvement to the above technical solution: Preferably, a thermostatic jacket is provided outside the cylinder.

[0006] Preferably, a rangefinder is provided at the end of the connecting rod to monitor the distance the connecting rod moves, so as to obtain the volume between the plug and the piston.

[0007] It also includes a human-computer interaction interface, which has built-in data analysis and processing software. The data analysis and processing software is connected to a temperature sensor, a pressure sensor, and a rangefinder. The data analysis and processing software processes data and draws PV, PT, or VT diagrams on the human-computer interaction interface.

[0008] The present invention also discloses a method for using a gas measurement experimental device, comprising the following steps: S1. Close the deflation valve and open the inflation valve to inflate the airbag with the preset amount of gas using the inflation machine. S2. Adjust the piston position via the connecting rod. During the movement, record the current data at intervals or intervals. S3. Draw a PV diagram, PT diagram, or VT diagram based on the current data.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes an airbag as a volume change chamber, combined with a piston cylinder, to achieve gas measurement experiments. The airbag's sealing properties ensure accurate experimental data. This improves the precision of gas experiments and reduces the manufacturing difficulty and cost of related instruments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the device structure of the present invention; Reference numerals: 1. Connecting rod; 2. Piston; 3. Cylinder; 4. Airbag; 5. Plug; 6. Monitoring interface; 7. Air release valve; 8. Inflation valve; 9. Inflator. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0012] like Figure 1 As shown, the gas measurement experimental apparatus of this embodiment includes: Cylinder 3 has an opening on one side and is closed on the other side by a plug 5; Piston 2 extends into cylinder 3 from the open end, and connecting rod 1 is provided at one end of piston 2; An air bladder 4 is positioned between the piston 2 and the cylinder 3. The air bladder 4 is connected to a deflation valve 7, an inflation valve 8, and a monitoring interface 6. The inflation valve 8 is connected to an inflator 9, and the monitoring interface 6 is used to connect temperature and pressure sensors to collect gas state parameters. The inflation valve 8 connects the inflator 9 and the air bladder 4 to allow the gas to be tested to be introduced. The deflation valve 7 releases the gas inside the soft air bladder 4, and both the inlet valve 8 and the deflation valve 7 meet high airtightness requirements. The material of the air bladder 4 must meet gas sealing requirements, and during the reciprocating motion of the piston 2, the soft air bladder 4 only deforms to change the internal gas volume, without direct frictional contact with the rigid cylinder wall 3. The air bladder 4 is made of a soft material such as rubber, and its inflated shape matches the cylinder wall to ensure that it completely fills the cylinder 3 after inflation. As the piston 2 moves, the gas volume inside the air bladder changes accordingly, always filling part of the space between the piston and the cylinder, allowing the gas volume to be read from the piston's position.

[0013] During assembly, the opening of the airbag 4 is sealed by the cylinder plug 5. The sealing method is either glue bonding or mechanical compression to ensure that there is no gas leakage between the soft airbag 4 and the cylinder plug 5. The piston 2 is driven by the connecting rod 1 to perform reciprocating motion. The piston 2 directly acts on the soft airbag 4 to compress or stretch the gas to be tested inside the soft airbag 4, thereby adjusting the gas volume.

[0014] A thermostatic jacket is installed outside the cylinder 3. The thermostatic jacket can reduce the influence of external temperature on the experiment. Since complete precision cannot be achieved, there will inevitably be slight errors in the experimental data, but these errors are within an acceptable range.

[0015] A rangefinder is installed at the end of connecting rod 1 to monitor the distance the connecting rod 1 moves, so as to obtain the volume between plug 5 and piston 2. This volume is actually the gas distribution volume, which is calculated as the bottom area of ​​cylinder 3 multiplied by the distance between the bottom and the piston; here, the bottom refers to plug 5.

[0016] It also includes a human-computer interaction interface, which has built-in data analysis and processing software. The data analysis and processing software is connected to temperature sensors, pressure sensors and rangefinders. Through data processing, the data analysis and processing software draws PV diagrams, PT diagrams or VT diagrams on the human-computer interaction interface.

[0017] The method of using the gas measurement experimental apparatus in this embodiment includes the following steps: S1. Close the deflation valve 7, open the inflation valve 8, and inflate the airbag 4 with the preset amount of gas through the inflation machine 9; S2. Adjust the position of piston 2 by connecting rod 1. During the movement, record the current data at intervals or intervals of movement. Demonstrate the experiment with PV=nRT. The current data here includes p, V, and T. S3. Draw a PV diagram, PT diagram, or VT diagram based on the current data.

[0018] Within the technical scope disclosed in this invention, any variations or substitutions that can be easily conceived should be included within the protection scope of this invention. Therefore, the protection scope of this invention should be determined by the scope of the claims.

Claims

1. A gas measurement experimental apparatus, characterized in that, include: The cylinder (3) is open on one side and closed on the other side by a plug (5); A piston (2) extends into the cylinder (3) from the open end, and a connecting rod (1) is provided at one end of the piston (2). An airbag (4) is disposed between the piston (2) and the cylinder (3). The airbag (4) is connected to a deflation valve (7), an inflation valve (8), and a monitoring interface (6). The inflation valve (8) is connected to an inflation machine (9). The monitoring interface (6) is connected to at least a temperature sensor and a pressure sensor.

2. The gas measurement experimental apparatus according to claim 1, characterized in that, A constant temperature jacket is provided outside the cylinder (3).

3. The gas measurement experimental apparatus according to claim 1 or 2, characterized in that, A rangefinder is provided at the end of the connecting rod (1) to monitor the moving distance of the connecting rod (1) in order to obtain the volume between the plug (5) and the piston (2).

4. The gas measurement experimental apparatus according to claim 3, characterized in that, It also includes a human-computer interaction interface, which has built-in data analysis and processing software. The data analysis and processing software is connected to a temperature sensor, a pressure sensor, and a rangefinder. The data analysis and processing software processes data and draws PV, PT, or VT diagrams on the human-computer interaction interface.

5. A method of using the gas measurement experimental apparatus as described in claim 4, characterized in that, Includes the following steps: S1. Close the deflation valve (7), open the inflation valve (8), and inflate the airbag (4) with a preset amount of gas through the inflation machine (9); S2. Adjust the position of piston (2) by connecting rod (1). During the movement, record the current data at interval time or interval movement distance. S3. Draw a PV diagram, PT diagram, or VT diagram based on the current data.

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