An internal heating type integrated gas experiment law exploring instrument

Abstract

Disclose a kind of inner heating type integrated gas experiment law inquiry instrument, including gas chamber, control component and monitoring device;Gas chamber includes main gas chamber and auxiliary gas chamber, main gas chamber and auxiliary gas chamber are connected by three-way valve;Gas chamber is all provided with push-pull piston, push-pull piston is provided with matched positioning device;Main gas chamber is provided with heating device, heating device includes heating component, heat dissipation component and air pressure temperature sensor, heating component, heat dissipation component and air pressure temperature sensor are electrically connected with control component respectively;Monitoring device is connected with control component communication.The inquiry instrument is integrated in one by constructing "double gas chamber three-way valve structure" the experimental function of three gas laws, without changing experimental device or reconnecting equipment, different types of gas law experiments can be completed, and built-in heating device makes it have accurate control to gas temperature, reduces the experimental error caused by temperature fluctuation.

Description

Technical Field

[0001] This application relates to the technical field of teaching experimental equipment, and mainly to an internally heated integrated gas experiment law exploration instrument. Background Technology

[0002] As core knowledge in the field of thermodynamics in physics, the experimental laws of gases involve fundamental concepts such as Boyle-Marie's law, Charles's law, and Gay-Lussac's law. These laws are extremely important for understanding the properties of gases, the laws governing the motion of microscopic particles, and thermal phenomena. In high school and even university physics teaching, these laws have always been important teaching points. Exploring the relationship between gas pressure, volume, and temperature through experiments not only helps students deepen their understanding of theoretical knowledge but also cultivates their scientific inquiry abilities and experimental skills, stimulating their interest in physics.

[0003] Existing instruments for exploring gas laws have several shortcomings. Firstly, traditional instruments typically consist of multiple discrete components, such as syringes, sensors, and data acquisition units. These components are prone to airtightness issues during connection, leading to significant deviations in experimental data. Secondly, existing instruments often use water bath heating or simple external heating methods, which cannot achieve precise temperature control and uniform heating of the gas, making it difficult to meet the high temperature requirements of experiments such as isothermal experiments. Furthermore, some instruments have limited data acquisition accuracy, making it difficult to obtain high-precision experimental data, and the data processing process is cumbersome, affecting the effectiveness and efficiency of experimental teaching. Some instruments can only conduct experiments exploring a single gas law, offering limited functionality and failing to meet diverse teaching needs.

[0004] In conclusion, developing a novel gas experiment law exploration instrument that effectively addresses the shortcomings of existing instruments, such as poor airtightness, inaccurate temperature control, low data acquisition precision, and limited functionality, is of paramount importance for improving the quality and effectiveness of physics experiment teaching. This will not only help students better understand and master the core concepts of gas experiment laws, enhancing their scientific literacy and experimental skills, but also provide more efficient and reliable experimental tools for physics teaching, promoting the development and innovation of physics experiment teaching, and further advancing the field of education. Utility Model Content

[0005] To address the problems of poor airtightness, inaccurate temperature control, low data acquisition precision, and limited functionality in existing gas experimental law research instruments, this application proposes an internally heated integrated gas experimental law research instrument to solve these problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An integrated gas experiment law investigation instrument with internal heating includes a gas chamber, a control component, and a monitoring device. The gas chamber includes a main gas chamber and a secondary gas chamber, which are connected by a three-way valve. Each gas chamber is equipped with a push-pull piston, and the push-pull piston is equipped with a matching positioning device. A heating device is installed in the main gas chamber, which includes a heating element, a heat dissipation element, and a pressure and temperature sensor. The heating element, the heat dissipation element, and the pressure and temperature sensor are electrically connected to the control component. The monitoring device is communicatively connected to the control component.

[0008] This experimental apparatus employs a unique dual-chamber structure, comprising a main chamber and a secondary chamber. The main chamber features an internal heating device that enables precise temperature control, ensuring uniform temperature distribution and reducing experimental errors caused by uneven temperature distribution. The secondary chamber is used for gas volume adjustment and buffering. Furthermore, the apparatus cleverly connects the main and secondary chambers using a three-way valve. By switching the valve's state and adjusting it in conjunction with a push-pull piston, rapid switching between experiments on the three gas laws can be achieved. This compact and easy-to-operate apparatus significantly improves the efficiency and accuracy of experimental teaching, providing a more efficient and reliable tool for teaching and experimenting with gas laws.

[0009] Preferably, the volume of the main air chamber is greater than the volume of the auxiliary air chamber.

[0010] More preferably, the volume ratio of the main air chamber to the auxiliary air chamber is 10 to 24:1.

[0011] The main gas chamber is the primary gas storage and reaction space, responsible for containing most of the experimental gases and equipped with a built-in heating device for precise temperature control. The larger volume of the main gas chamber helps ensure a uniform gas temperature distribution and reduces temperature gradients, thus providing a stable temperature environment for isothermal experiments. Simultaneously, the larger volume of the main gas chamber also allows for smoother pressure changes when adjusting the gas volume in the secondary gas chamber, facilitating accurate measurements.

[0012] The auxiliary chamber is connected to the main chamber via a three-way valve and is mainly used to adjust the gas volume to achieve gas volume changes under isobaric experimental conditions. The smaller volume of the auxiliary chamber allows the experimenter to increase or decrease the pressure inside the chamber by making small changes in gas volume, thereby quickly adjusting the system volume to meet the requirements of isobaric experiments without disrupting the stability of the gas in the main chamber.

[0013] Designing the main gas chamber to have a larger volume than the secondary gas chamber ensures that the main chamber dominates the experiment, maintaining the stability of the gas state and the reliability of the experimental data. This structure allows the main gas chamber to provide a stable gas environment, while the secondary gas chamber serves as an auxiliary adjustment tool, flexibly changing the system volume to improve the sensitivity and accuracy of the experiment. This clear distinction between primary and secondary chambers not only enhances the applicability and versatility of the experimental apparatus, enabling it to adapt to various gas law experiments, but also facilitates teaching demonstrations and student understanding, helping them to more intuitively grasp the experimental principles and operational methods of gas laws.

[0014] Preferably, the tail of the push-pull piston is provided with a positioning pin, which is snap-fitted to the positioning device. This structural design ensures that the push-pull piston moves smoothly and precisely within the gas chamber, thereby enabling accurate adjustment of the gas volume. Simultaneously, the snap-fit ​​connection between the positioning pin and the positioning device firmly fixes the position of the push-pull piston, effectively preventing unnecessary movement during the experiment and significantly reducing errors introduced by changes in the piston's position.

[0015] More preferably, the positioning device includes a fishbone positioner or a stepping pin base. Both the fishbone positioner and the stepping pin base provide high-precision positioning, allowing experimenters to quickly and accurately position the push-pull piston to the desired location. This not only improves the repeatability and reliability of the experiment but also simplifies the experimental procedure and saves experimental time.

[0016] Preferably, a piston anti-detachment mechanism is detachably provided at the opening of the gas chamber. When the gas in the gas chamber expands due to heat, the piston rebounds, or the piston is accidentally pulled, the anti-detachment mechanism forms a mechanical hard block to prevent the piston from being pushed out by the high-pressure gas and causing injury.

[0017] Preferably, the air chamber is transparent, and the outer wall of the air chamber is provided with scale lines along the pushing and pulling direction of the push-pull piston.

[0018] Preferably, a rubber sealing ring is provided at the connection between the three-way valve and the gas chamber. During the experiment, the rubber sealing ring undergoes self-tightening deformation, effectively filling the tiny gap at the connection between the three-way valve and the gas chamber, preventing gas leakage. This ensures the accuracy of the gas volume and pressure within the gas chamber, avoids experimental data deviations caused by leakage, and improves the reliability of the experimental results.

[0019] Preferably, the control component includes a display screen, function buttons, and indicator lights. The display screen can show real-time information such as the air pressure and temperature inside the chamber, as well as the name of the current gas law being tested, allowing experimenters to easily monitor the experimental progress and record and analyze data. The function buttons facilitate various operations and controls on the instrument, such as starting, stopping, and setting parameters, improving ease of operation and efficiency. The indicator lights provide intuitive information about the instrument's operating status and alarm messages, helping experimenters quickly identify the equipment's condition and reduce operational errors. Through the coordinated operation of these components, experimenters can perform experiments more efficiently, monitor the experimental status in real time, and promptly handle abnormal situations, thereby ensuring the smooth progress of the experiment and the reliability of the data.

[0020] Preferably, the device also includes a power supply that powers the control unit and the heating device. The control unit and heating device are the core components of the experimental apparatus. A stable power supply ensures that the control unit can accurately control and monitor various parameters during the experiment, such as air pressure and temperature. Simultaneously, the heating device can stably provide heat according to a preset program, ensuring precise control and uniform distribution of the gas temperature.

[0021] Compared with the prior art, this application has the following beneficial effects:

[0022] (1) The internal heating integrated gas law experiment explorer of this application integrates the experimental functions of three gas laws into one by constructing a "dual gas chamber three-way valve structure". It can complete different types of gas law experiments without replacing the experimental device or reconnecting the equipment. Moreover, the explorer has a compact structure and small size, which reduces the space occupied by the equipment compared with the traditional multiple independent experimental devices.

[0023] (2) The internal heating integrated gas experimental law exploration instrument of this application achieves precise control of gas temperature through a built-in heating device, and with the help of heat dissipation components, ensures that the gas temperature is uniform and stable, reducing experimental errors caused by temperature fluctuations.

[0024] (3) The internal heating integrated gas experiment law exploration instrument of this application realizes the precise adjustment of gas volume through the piston stepping positioning system (positioning device + positioning pin) and can fix the push-pull piston in the set position to ensure the accurate measurement and control of gas volume, thereby improving the accuracy of experimental data. Attached Figure Description

[0025] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of this application. Other embodiments and many anticipated advantages of these embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0026] Figure 1 A structural diagram of an internally heated integrated gas experimental law research apparatus according to an embodiment of this application is shown;

[0027] The attached figures are labeled as follows:

[0028] 1-Main air chamber, 11-Main air chamber push-pull piston, 2-Auxiliary air chamber, 21-Auxiliary air chamber push-pull piston, 3-Three-way valve, 4-Heating device, 5-Positioning device, 6-Push-pull piston anti-detachment mechanism, 7-Positioning pin, 8-Control components, 81-Display screen, 82-Function buttons, 83-Function indicator light, 84-Power switch, 85-Heating and heat dissipation switch. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] Where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This application shows a structural diagram of an integrated internally heated gas experimental law research apparatus, as illustrated in the following diagram. Figure 1 As shown, it includes an air chamber, a control component 8, a monitoring device, and a power supply. The air chamber includes a main air chamber 1 and an auxiliary air chamber 2, which are respectively connected to two branches of the same three-way valve 3.

[0032] In a specific embodiment, the pressure measurement range of the instrument is 0.5–1.5 kPa (measurement accuracy 0.01 kPa), and the temperature control range is -10–60℃ (measurement accuracy 0.01℃).

[0033] Specifically, a rubber sealing ring may be provided at the connection between the three-way valve 3 and the gas chamber. When the three-way valve 3 and the gas chamber are connected through a gas pipeline, rubber sealing rings are provided at both the connection between the three-way valve 3 and the gas pipeline, and at the connection between the gas chamber and the gas pipeline.

[0034] In a specific embodiment, sealant is also used to seal the connection between the three-way valve 3 and the gas pipeline, as well as the connection between the gas chamber and the gas pipeline.

[0035] Specifically, the volume of the main air chamber 1 is greater than the volume of the auxiliary air chamber 2. The volume of the main air chamber 1 is 30-150ml, the volume of the auxiliary air chamber 2 is 1-5ml, and the volume ratio of the main air chamber 1 to the auxiliary air chamber 2 is 10-24:1.

[0036] In a specific embodiment, the main gas chamber 1 has a volume of 60 mL, and the auxiliary gas chamber 2 has a volume of 2.5 mL.

[0037] Specifically, a heating device 4 is installed inside the main air chamber 1. The heating device 4 includes a heating component, a heat dissipation component, and a pressure and temperature sensor. Under the synergistic effect of the heating component and the heat dissipation component, a dynamic balance of "heat generation-heat transfer-heat control" is formed, and a high-precision temperature control closed-loop system is constructed with real-time feedback from the sensor, which greatly improves the heating efficiency and ensures uniform temperature and precise control.

[0038] In a specific embodiment, the three-way valve 3 is a Luer three-way valve, the heating component is a PTC heater, the heat dissipation component is a convection fan, and the air pressure and temperature sensor is a BMP280 sensor.

[0039] Specifically, a push-pull piston 11 and a push-pull piston 21 are respectively installed in the main air chamber 1 and the auxiliary air chamber 2, as well as a positioning device 5 that is matched with the push-pull piston. A push-pull piston anti-disengagement mechanism 6 can also be detachably installed at the opening of the air chamber. A positioning pin 7 is installed at the tail of the push-pull piston. The positioning pin 7 can be snapped together with the positioning device 5 to realize the adjustment and fixation of the push-pull piston.

[0040] In a specific embodiment, the positioning device 5 can be configured as a fishbone locator or a stepping pin base, and the positioning pin 7 matches the shape of the positioning device 5.

[0041] In a specific embodiment, the air chamber is made of a transparent material, so that the position of the push-pull piston can be clearly seen from the outside of the air chamber, and scale lines are provided on the outer wall of the air chamber along the pushing and pulling direction of the push-pull piston.

[0042] In another specific embodiment, the air chamber is provided with a transparent window along the pushing and pulling direction of the push-pull piston, so that the position of the push-pull piston can be clearly seen from the outside of the air chamber, and the transparent window is provided with scale lines.

[0043] Specifically, the control unit 8 is equipped with a display screen 81, function buttons 82, and function indicator lights 83. The display screen 81 can display real-time information such as the air pressure and temperature inside the chamber, as well as the name of the current gas experiment law, allowing experimenters to easily monitor the experimental progress and record and analyze data. The function buttons 82 facilitate various operational controls of the instrument, such as starting and stopping the heating or cooling components, and setting target temperatures and pressures, improving operational convenience and efficiency. The function indicator lights 83 include power lights, heating lights, and cooling fan lights, which intuitively indicate the instrument's operating status and alarm information, helping experimenters quickly identify equipment status and reduce operational errors.

[0044] In a specific embodiment, the control component 8 is also provided with a power switch 84 and a heating and heat dissipation switch 85.

[0045] In a specific embodiment, the control component 8 is based on an ESP32 microcontroller and integrates a display screen, function buttons, and function indicator lights on it.

[0046] Specifically, the monitoring device is communicatively connected to the control unit 8.

[0047] In a specific embodiment, the control unit 8 transmits data to the monitoring device via a USB interface.

[0048] Specifically, the power supply provides power to the control unit 8 and the heating device 4.

[0049] In a specific embodiment, both the control component 8 and the heating component are directly connected to the power supply.

[0050] In a specific embodiment, the probe also includes a base plate, and the air chamber, control components 8 and power supply are all mounted on the base plate.

[0051] Boyle-Marie experiment

[0052] (1) Initial setup: Close all passages with the three-way valve, forming a closed system in the main air chamber. Calibrate the instrument and deduct the volume of the heating device. Fix the main air chamber push-pull piston with the positioning pin. Set the target temperature and start the heating and heat dissipation components to make the temperature in the main air chamber uniform. When the temperature stabilizes to the set value (error ≤ 0.01℃), open the main air chamber passage valve of the three-way valve to connect the main air chamber with the outside, and then close the valve.

[0053] (2) Data acquisition: When the temperature in the main air chamber reaches the set value again, the monitoring device automatically records the pressure value; moves the main air chamber push-pull piston positioning pin to the next position, waits for the temperature to stabilize again and records the new pressure data; repeats the movement of the positioning pin and records the new pressure data, and collects the pressure data each time after ensuring that the temperature returns to the set value.

[0054] Charles's Law Investigation Experiment

[0055] (1) Initial setup: The three-way valve closes all passages, and the main gas chamber forms a closed system; the main gas chamber push-pull piston is fixed to ensure a constant gas volume; the temperature step value is set, and the heating and heat dissipation components are started to make the temperature in the main gas chamber uniform;

[0056] (2) Data acquisition: The monitoring device automatically records the pressure and temperature values ​​when a new temperature point is reached.

[0057] Gay-Lussac's Law Experiment

[0058] (1) Initial settings: Open the three-way valve to connect the main air chamber and the auxiliary air chamber; fix the main air chamber push-pull piston and set the initial position of the auxiliary air chamber push-pull piston; set the target pressure; start the heating and heat dissipation components;

[0059] (2) Data acquisition: When the temperature in the main air chamber rises and the pressure increases to the set value (error ≤ 0.01 kPa), the monitoring device automatically records the temperature; moves the auxiliary air chamber push-pull piston positioning pin to the next position, waits for the pressure to stabilize again and records the new temperature data; repeats the movement of the positioning pin and records the new temperature data, and collects the temperature data each time after ensuring that the pressure returns to the set value.

[0060] The specific embodiments of this application have been described above, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0061] In the description of this application, it should be understood that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that combinations of these measures cannot be used for improvement. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. An integrated, internally heated gas experimental law research apparatus, characterized in that, The system includes an air chamber, a control component, and a monitoring device. The air chamber comprises a main air chamber and a secondary air chamber, which are connected via a three-way valve. Each air chamber is equipped with a push-pull piston, and the push-pull piston is equipped with a corresponding positioning device. A heating device is installed in the main air chamber, comprising a heating element, a heat dissipation element, and a pressure and temperature sensor. The heating element, the heat dissipation element, and the pressure and temperature sensor are electrically connected to the control component. The monitoring device is communicatively connected to the control component.

2. The integrated gas experimental law research apparatus with internal heating according to claim 1, characterized in that, The volume of the main air chamber is greater than the volume of the auxiliary air chamber.

3. The integrated gas experimental law research apparatus with internal heating according to claim 2, characterized in that, The volume ratio of the main air chamber to the auxiliary air chamber is 10 to 24:

1.

4. The integrated gas experimental law research apparatus with internal heating according to claim 1, characterized in that, The tail of the push-pull piston is provided with a positioning pin, which is snapped into the positioning device.

5. The integrated gas experimental law research apparatus with internal heating according to claim 4, characterized in that, The positioning device includes a fishbone locator or a stepping pin base.

6. The integrated gas experimental law research apparatus with internal heating according to claim 1, characterized in that, A piston anti-disengagement mechanism is detachably provided at the opening of the air chamber.

7. The integrated gas experimental law investigation apparatus with internal heating according to claim 1, characterized in that, The air chamber is transparent, and scale lines are provided on the outer wall of the air chamber along the pushing and pulling direction of the push-pull piston.

8. The integrated gas experimental law research apparatus with internal heating according to claim 1, characterized in that, A rubber sealing ring is provided at the connection between the three-way valve and the air chamber.

9. The integrated gas experimental law research apparatus with internal heating according to claim 1, characterized in that, The control unit is equipped with a display screen, function buttons, and function indicator lights.

10. The integrated gas experimental law research apparatus with internal heating according to claim 1, characterized in that, It also includes a power supply that powers the control components and the heating device.

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