Ideal gas state equation experimental instrument

Abstract

The utility model relates to the technical field of pressure measurement experiment instruments, in particular to an ideal gas state equation experiment instrument, which comprises a glass tube, a heat conduction shell is mounted at one end of the glass tube, a temperature sensor is inserted into the heat conduction shell, a pressure sensor is mounted on the lower side of the heat conduction shell in a penetrating manner, and a plurality of groups of heat insulation protection plates are mounted on the outer side of the glass tube. A piston is arranged in the glass tube in a penetrating mode, a lead screw is installed at one end of the piston, the other end of the lead screw is matched with threads to rotationally penetrate out of the glass tube and the heat insulation protection plate, multiple sets of cooling fins are installed on the outer side of the heat insulation protection plate, and a cooling fan is installed on one sides of the cooling fins. Compared with the prior art, the experimental device has the advantages that an experiment can be carried out on the same set of experimental device by adopting a control variable method, and the defect that the previous experimental device cannot completely verify three laws is overcome; a semiconductor is used for heating / refrigerating; a modular structure is adopted, functions of all modules in an experiment are clear, and pressure and temperature protection devices and a high-temperature protection cover are arranged.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure measurement experimental instruments, in particular to an ideal gas state equation experimental instrument. Background Art

[0002] The ideal gas state equation reveals the state relationship between pressure, volume, amount of substance and temperature when the gas is in equilibrium. It is the basis of thermodynamics theory. Learning the theory of the ideal gas state equation plays an important role in the subsequent study of thermodynamics. Temperature is a very important physical quantity in thermodynamics. It can be said that any thermodynamic quantity is related to temperature. The physical quantity that describes the degree of hotness or coldness of an object, the Kelvin temperature, is generally greater than zero. Studying negative temperature is of great significance to thermodynamics experiments.

[0003] The existing gas device has an integral structure, the module functions are unclear, it is not convenient for later maintenance, and it does not have a high-temperature protection device. The temperature change range is narrow and the temperature change is slow in the water circulation heating / cooling method. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that the module function is unclear, there is no high temperature protection device, and the temperature change range is narrow and the temperature change is slow in the water circulation heating / cooling mode.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: an ideal gas state equation experimental instrument, comprising a glass tube, a heat-conducting shell is installed at one end of the glass tube, a temperature sensor is inserted and installed inside the heat-conducting shell, a pressure sensor is installed through the lower side of the heat-conducting shell, and multiple groups of heat-insulating protective plates are installed on the outer side of the glass tube;

[0008] A piston is provided inside the glass tube, one end of the piston is provided with a screw rod, the other end of the screw rod cooperates with a thread to rotate and pass through the glass tube and the heat insulation protective plate, multiple groups of heat sinks are provided on the outside of the heat insulation protective plate, and a heat dissipation fan is provided on the side of the heat sink away from the heat insulation protective plate.

[0009] As an improvement, one end of the temperature sensor passes through the interior of the glass tube.

[0010] As an improvement, multiple groups of the heat insulation protection plates are connected.

[0011] As an improvement, a hand wheel is installed at one end of the screw rod located outside the heat insulation protection plate.

[0012] As an improvement, a plurality of sets of anchor brackets are installed on the lower side of the heat insulation protection plate.

[0013] 3. Beneficial Effects

[0014] The advantages of the utility model compared with the prior art are:

[0015] 1. The experiment can be carried out on the same set of experimental equipment using the controlled variable method, which solves the defect that the previous experimental equipment of this type could not fully verify the three laws;

[0016] 2. The use of semiconductor heating / cooling solves the problem of narrow temperature change range and slow temperature change in the previous water circulation heating method;

[0017] 3. It adopts a modular structure, and the functions of each module in the experiment are clear. It has pressure and temperature protection devices and a high-temperature protective cover.

[0018] 4. It can cool down quickly and complete experiments of different classes continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a cross-sectional structural schematic diagram of an ideal gas state equation experimental instrument.

[0020] Figure 2 The utility model is a schematic diagram of the structure of a multifunctional temperature control experimental system of an ideal gas state equation experimental instrument.

[0021] Figure 3 The utility model is a schematic diagram of the structure of a pressure measuring device of an ideal gas state equation experimental instrument.

[0022] As shown in the figure: 1. Glass tube; 2. Piston; 3. Screw; 4. Handwheel; 5. Heat insulation protection plate; 6. Heat sink; 7. Cooling fan; 8. Heat conduction shell; 9. Temperature sensor; 10. Pressure sensor; 11. Anchor bracket. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] As attached Figure 1As shown, an ideal gas state equation experimental instrument comprises a glass tube 1, a heat-conducting shell 8 is installed at one end of the glass tube 1, a temperature sensor 9 is inserted and installed inside the heat-conducting shell 8, one end of the temperature sensor 9 passes through the inside of the glass tube 1, a pressure sensor 10 is installed through the lower side of the heat-conducting shell 8, and multiple groups of heat-insulating protective plates 5 are installed on the outer side of the glass tube 1, and the multiple groups of heat-insulating protective plates 5 are connected to each other;

[0026] A piston 2 is passed through the inside of the glass tube 1, a screw 3 is installed at one end of the piston 2, and the other end of the screw 3 cooperates with the thread to rotate and pass through the glass tube 1 and the heat insulation protection plate 5. Multiple groups of heat sinks 6 are installed on the outside of the heat insulation protection plate 5, and a heat dissipation fan 7 is installed on the side of the heat sink 6 away from the heat insulation protection plate 5.

[0027] Through the above structure, a scale is provided on the glass tube 1 to store and seal a certain mass of gas, which is sealed by the piston 2 to change the volume in the glass tube 1. The temperature sensor 9 is placed inside the glass tube 1 to measure the temperature in real time. The air inlet of the pressure sensor 10 is connected to the glass tube 1 to measure the pressure in real time. The heat on the heat insulation protection plate 5 is transferred through the heat sink 6. The heat dissipation fan 7 blows air to the heat sink 6 to accelerate the heat dissipation of the heat sink 6 and the heat insulation protection plate 5 to prevent high temperature from causing damage to the experimental instrument. The specific structure is as follows:

[0028] Through the above structure,

[0029] Combined with Figure 1 As shown, a hand wheel 4 is installed at one end of the screw rod 3 located outside the heat insulation protection plate 5, and a plurality of anchor brackets 11 are installed at the lower side of the heat insulation protection plate 5.

[0030] Through the above structure, rotating the hand wheel 4 drives the screw 3 to rotate, and the screw 3 pushes the piston 2 to move inside the glass tube 1, changing the pressure and volume of a certain mass of gas inside the glass tube 1, and the experimental instrument is stably supported by multiple sets of anchor brackets 11.

[0031] The specific usage is as follows:

[0032] The multifunctional temperature control experimental system (attached Figure 2 ) and pressure measuring device (attached Figure 3 ) and the gas law experimental device, connect the interface of the temperature sensor 9 of the gas law experimental device to the digital thermometer, then rotate the piston 2 to a certain position on the scale, turn on the multifunctional temperature control experimental system without external circuit, only preheat, turn on the digital pressure gauge, preheat for about 5 minutes, open the manual exhaust valve in the gas law experimental device, make the pressure inside and outside the glass tube 1 equal, and reset the pressure measuring device. Then rotate the piston 2 to a certain position on the scale, lock the manual exhaust valve to make the gas in the glass tube 1 in a sealed state, wait for the temperature and pressure of the electrical device and the enclosed gas to stabilize, and then carry out subsequent experiments.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0035] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An ideal gas state equation experimental apparatus, comprising a glass tube (1), characterized in that: A heat-conducting shell (8) is installed at one end of the glass tube (1), a temperature sensor (9) is inserted and installed inside the heat-conducting shell (8), a pressure sensor (10) is installed through the lower side of the heat-conducting shell (8), and multiple groups of heat-insulating protective plates (5) are installed on the outer side of the glass tube (1); A piston (2) is provided inside the glass tube (1), one end of the piston (2) is provided with a screw rod (3), the other end of the screw rod (3) is rotated in cooperation with a thread to pass through the glass tube (1) and the heat insulation protection plate (5), a plurality of groups of heat sinks (6) are provided outside the heat insulation protection plate (5), and a heat dissipation fan (7) is provided on the side of the heat sink (6) away from the heat insulation protection plate (5).

2. An ideal gas state equation experimental instrument according to claim 1, characterized in that: One end of the temperature sensor (9) passes through the interior of the glass tube (1).

3. An ideal gas state equation experimental instrument according to claim 1, characterized in that: A plurality of groups of the heat insulation protection plates (5) are connected to each other.

4. An ideal gas state equation experimental instrument according to claim 1, characterized in that: A hand wheel (4) is installed at one end of the screw rod (3) located outside the heat insulation protection plate (5).

5. An ideal gas state equation experimental instrument according to claim 1, characterized in that: A plurality of sets of anchor brackets (11) are installed on the lower side of the heat insulation protection plate (5).

Images