CN219066302U - Experimental device for temperature change during quantitative study gas expansion - Google Patents
Experimental device for temperature change during quantitative study gas expansion Download PDFInfo
- Publication number
- CN219066302U CN219066302U CN202122768912.1U CN202122768912U CN219066302U CN 219066302 U CN219066302 U CN 219066302U CN 202122768912 U CN202122768912 U CN 202122768912U CN 219066302 U CN219066302 U CN 219066302U
- Authority
- CN
- China
- Prior art keywords
- piston
- release valve
- air release
- temperature
- silica gel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an experimental device for quantitatively researching temperature change during gas expansion, which comprises a piston and a piston wall thereof; the top end of the piston wall is provided with an air outlet hole; the air outlet hole is detachably connected with one end of the silica gel tube in a sealing way, and the other end of the silica gel tube is connected to the air release valve; the two ends of the air release valve are hollow cylinders with different diameters, and a cone is arranged between the large end and the small end for transitional connection; the inner cavities of the large end, the small end and the cone are sequentially communicated to form a hollow cylinder channel; during the experiment, the other end of silicone tube inserts the cavity of bleed valve big end with adjustable depth of insertion, until support to the inner chamber of cone body wall, can realize the sealed of the interior gas of silicone tube, and the sealed temperature probe that inserts of tip cavity is until the probe is located in the gas of piston. The utility model solves the problem of the experimental device for researching the temperature change during the expansion of the gas in the middle school laboratory by adopting the experimental equipment which is simple and convenient to obtain.
Description
Technical Field
The utility model relates to the technical field of middle school physics experiments, in particular to an experimental device for quantitatively researching temperature change during gas expansion.
Background
In high school physical thermodynamic teaching, experiments on the reduction of the expansion temperature of a certain mass of gas are required. In the experimental process, the quality of the gas is controlled to be certain, the gas is ensured to be expanded, and the heating method cannot be eliminated when the temperature of the expansion process is increased, so that the experimental process is very difficult to operate. So most schools do traditional qualitative experiments at the level of phenomenon. Controlling this expansion to a short time, the temperature effects of heat transfer are considered negligible. For example, when the bottle is inflated to a certain amount, the gas can push the upper bottle cap open. At this time, mist is seen at the bottle mouth, and the temperature of the gas is indirectly proved to be reduced.
The rapid temperature sensor is used, so that the experiment can be changed into a quantitative or semi-quantitative experiment, and the change of the gas temperature can be clearly seen, and then the comparison is carried out to obtain an experiment conclusion.
Disclosure of Invention
1. The technical problems to be solved are as follows:
aiming at the technical problems, the utility model provides the experimental device for quantitatively researching the temperature change during gas expansion, which can quantitatively or semi-quantitatively display experimental phenomena, simply and qualitatively control the critical pressure of deflation and is convenient to compare.
2. The technical scheme is as follows:
an experimental device for quantitatively researching temperature change during gas expansion, which is characterized in that: comprising a piston and a piston wall thereof; the top end of the piston wall is provided with an air outlet; the air outlet hole is detachably connected with one end of the silica gel tube in a sealing way, and the other end of the silica gel tube is connected to the air release valve; the two ends of the air release valve are hollow cylinders with different diameters, and a cone is arranged between the large end and the small end for transitional connection; the inner cavities of the large end, the small end and the cone are sequentially communicated to form a hollow cylinder channel; during the experiment, the other end of the silicone tube can be inserted into the cavity of the big end of the air release valve in an adjustable insertion depth manner until the air release valve is propped against the inner cavity of the conical body wall, so that the sealing of the air in the silicone tube can be realized, and the probe of the rapid temperature sensor is inserted into the hollow seal of the small end until the probe is positioned in the air in the piston.
Further, the piston and the piston wall thereof are needle cylinders; the silicone tube is a standard small-sized silicone tube; the inner diameter of the large end of the air release valve is slightly larger than the outer diameter of the standard small silica gel tube; the inner diameter of the small end of the air release valve is slightly larger than the diameter of the temperature probe; the air outlet hole of the needle cylinder is connected with the silica gel tube through the luer, and sealing can be achieved in the experimental process.
Further, in the experiment, the rapid temperature sensor measures the temperature in the piston by means of the temperature probe, and wirelessly transmits information to the mobile terminal, and the mobile terminal displays the measured temperature; the temperature probe is a thermistor probe, and the model of the temperature probe is ST72mm-103F-3435.
Further, the experiment comprises the following steps:
step one: pulling the piston to the maximum volume of the piston wall, and connecting the piston with a silicone tube; penetrating a temperature probe from the small end of the air release valve and penetrating the whole air release valve; then inserting a silica gel pipe into the big end of the air release valve, and adjusting the position of the temperature probe to be close to the joint of the piston and the silica gel pipe; at the moment, the depth of the silica gel tube inserted into the air release valve is controlled to be a preset depth h 1 ；
Step two: inserting a temperature probe into a rapid temperature sensor, connecting the rapid temperature sensor with a mobile terminal by Bluetooth, and setting the mobile terminal to start to collect temperature;
step three: the piston is compressed manually and rapidly until the bottom of the piston wall, in the process, at a certain moment in the latter half of piston compression, the joint of the silica gel tube and the air release valve starts to leak air, the rapid temperature sensor detects the temperature change of the air in the whole process, and the moving end displays a temperature change curve;
step four: the depth of the silicone tube inserted into the air release valve is controlled to be a preset depth h 1 The piston is manually and slowly compressed until the bottom of the piston wall, in the process, at a certain moment in the latter half of piston compression, the joint of the silica gel tube and the air release valve starts to leak air, the rapid temperature sensor detects the temperature change of the air in the whole process, and the movable end displays a temperature change curve;
step five: changing the depth of the silica gel tube inserted into the air release valve to be h 2 Repeating the third and fourth steps to perform the comparison experiment of rapid compression and slow compression at different depths;
step six: and (5) carrying out experimental analysis to obtain an experimental conclusion.
3. The beneficial effects are that:
(1) The utility model solves the problem of the experimental device for reducing the expansion temperature of the gas with certain mass, can quantitatively or semi-quantitatively display experimental phenomena, simply and qualitatively control the critical pressure of the deflation, and is convenient for comparison.
(2) Besides a special air release valve, other instruments of the experimental device can be realized by using conventional instruments in a laboratory, and the experimental device is plug-and-play and fast and reliable in experiment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged cross-sectional view of the purge valve in the present utility model;
fig. 3 is an image of temperature change acquired in a specific embodiment.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
An experimental device for quantitatively researching temperature change during gas expansion as shown in fig. 1 to 2, which is characterized in that: comprising a piston 1 and a piston wall 2 thereof; the top end of the piston wall is provided with an air outlet; the air outlet hole is detachably connected with one end of the silica gel tube 3 in a sealing way, and the other end of the silica gel tube is connected to the air release valve 4; the two ends of the air release valve are hollow cylinders with different diameters, and a cone is arranged between the large end and the small end for transitional connection; the inner cavities of the large end, the small end and the cone are sequentially communicated to form a hollow cylinder channel; during experiments, the other end of the silicone tube is inserted into the cavity at the large end of the air release valve in an adjustable insertion depth manner until the silicone tube is propped against the inner cavity of the conical body wall, so that the sealing of gas in the silicone tube can be realized, and the probe 5 of the rapid temperature sensor 6 is inserted into the hollow seal at the small end until the probe is positioned in the gas in the piston
Further, the piston and the piston wall thereof are needle cylinders; the silicone tube is a standard small-sized silicone tube; the inner diameter of the large end of the air release valve is slightly larger than the outer diameter of the standard small silica gel tube; the inner diameter of the small end of the air release valve is slightly larger than the diameter of the temperature probe; the air outlet hole of the needle cylinder is connected with the silica gel tube through the luer, and sealing can be achieved in the experimental process.
The piston structure in this solution can be implemented with syringes, rubber tubes, etc. which are common in the laboratory. When the syringe is used for experiments, the size of the syringe can be selected according to the needs, and the silicone tube is a small rubber tube with the standard diameter of 7 mm; the inner diameter of the big end of the air release valve is 7.3mm, and the inner diameter of the small end of the air release valve is 2.5mm; the diameter of the temperature probe is 2mm.
Further, in the experiment, the rapid temperature sensor is connected with the temperature probe to measure the temperature in the piston, and the information is wirelessly transmitted to the mobile terminal, and the mobile terminal displays the measured temperature; the temperature probe is a thermistor probe, and the model of the temperature probe is ST72mm-103F-3435.
Specific examples:
the purpose of the experiment is as follows: the gas with certain mass is researched, when the gas pressure is unchanged, the volume and the temperature are changed
The experimental steps are as follows:
step one: pulling the piston to the maximum volume of the piston wall, and connecting the piston with a silicone tube; penetrating a temperature probe from the small end of the air release valve and penetrating the whole air release valve; then inserting a silica gel pipe into the big end of the air release valve, and adjusting the position of the temperature probe to be close to the joint of the piston and the silica gel pipe; at the moment, the depth of the silica gel tube inserted into the air release valve is controlled to be a preset depth h 1 ；
Step two: inserting a temperature probe into a rapid temperature sensor, connecting the rapid temperature sensor with a mobile terminal by Bluetooth, and setting the mobile terminal to start to collect temperature;
step three: the piston is compressed manually and rapidly until the bottom of the piston wall, in the process, at a certain moment in the latter half of piston compression, the joint of the silica gel tube and the air release valve starts to leak air, the rapid temperature sensor detects the temperature change of the air in the whole process, and the moving end displays a temperature change curve;
step four: the depth of the silicone tube inserted into the air release valve is controlled to be a preset depth h 1 The piston is slowly compressed manually up to the bottom of the piston wall, in the processIn the process, at a certain moment in the latter half of compression of the piston, the joint of the silica gel tube and the air release valve starts to leak air, the temperature sensor rapidly detects the temperature change of air in the whole process, and the movable end displays a temperature change curve;
step five: changing the depth of the silica gel tube inserted into the air release valve to be h 2 Repeating the third and fourth steps to perform the comparison experiment of rapid compression and slow compression at different depths;
step six: and (5) carrying out experimental analysis to obtain an experimental conclusion.
Fig. 3 is an image displayed on the mobile terminal when the experiment is performed. The experimental operation corresponding to the image is to control the depth of the silicone tube inserted into the air release valve to be h unchanged, and rapidly compress the needle cylinder to the bottom end for the first time; and after the initial state is restored, slowly compressing the temperature change graph acquired when the needle cylinder is in the bottom end for the second time.
The position shown in the left circle is the temperature change of the gas when the gas is compressed rapidly. It can be seen that the temperature increases rapidly and the leak gas decreases relatively slowly. The position shown in the right circle is the temperature change condition of the gas when the gas is slowly compressed. During the slow compression process, the temperature remains approximately unchanged, and only slightly rises before compression to the critical pressure of the blow-by gas; then the air leaks, the temperature drops rapidly, and then slowly rises.
From the experimental images it can be derived that: under the condition of rapid compression of a certain amount of gas, the temperature rises; in the case of rapid expansion, the temperature decreases.
By changing the depth of the insertion of the silicone tube, the above experiment was performed, and it was found that the greater the depth of the insertion of the silicone tube into the air release valve, the greater the critical pressure during air release and the greater the amount of change in gas temperature.
While the utility model has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model, and it is intended that the scope of the utility model shall be limited only by the claims appended hereto.
Claims (4)
1. An experimental device for quantitatively researching temperature change during gas expansion, which is characterized in that: comprising a piston and a piston wall thereof; the top end of the piston wall is provided with an air outlet; the air outlet hole is detachably connected with one end of the silica gel tube in a sealing way, and the other end of the silica gel tube is connected to the air release valve; the two ends of the air release valve are hollow cylinders with different diameters, and a cone is arranged between the large end and the small end for transitional connection; the inner cavities of the large end, the small end and the cone are sequentially communicated to form a hollow cylinder channel; during the experiment, the other end of the silicone tube can be inserted into the cavity of the big end of the air release valve in an adjustable insertion depth manner until the air release valve is propped against the inner cavity of the conical body wall, so that the sealing of the air in the silicone tube can be realized, and the probe of the rapid temperature sensor is inserted into the hollow seal of the small end until the probe is positioned in the air in the piston.
2. An experimental set-up for quantitative investigation of temperature variations upon gas expansion according to claim 1, wherein: the piston and the piston wall are needle cylinders; the silicone tube is a standard small-sized silicone tube; the inner diameter of the large end of the air release valve is slightly larger than the outer diameter of the standard small silica gel tube; the inner diameter of the small end of the air release valve is slightly larger than the diameter of the temperature probe; the air outlet hole of the needle cylinder is connected with the silica gel tube through the luer, and sealing can be achieved in the experimental process.
3. An experimental set-up for quantitative investigation of temperature variations upon gas expansion according to claim 1, wherein: during experiments, the rapid temperature sensor measures the temperature in the piston by means of the temperature probe, and wirelessly transmits information to the mobile terminal, and the mobile terminal displays the measured temperature; the temperature probe is a thermistor probe, and the model of the temperature probe is ST72mm-103F-3435.
4. An experimental set-up for quantitative investigation of temperature variations upon gas expansion according to claim 1, wherein: the experiment comprises the following steps:
step one: the piston is pulled to the maximum volume of the piston wall, and the silica gel tube is connectedThe method comprises the steps of carrying out a first treatment on the surface of the Penetrating a temperature probe from the small end of the air release valve and penetrating the whole air release valve; then inserting a silica gel pipe into the big end of the air release valve, and adjusting the position of the temperature probe to be close to the joint of the piston and the silica gel pipe; at the moment, the depth of the silica gel tube inserted into the air release valve is controlled to be a preset depth h 1 ；
Step two: inserting a temperature probe into a rapid temperature sensor, connecting the rapid temperature sensor with a mobile terminal by Bluetooth, and setting the mobile terminal to start to collect temperature;
step three: the piston is compressed manually and rapidly until the bottom of the piston wall, in the process, at a certain moment in the latter half of piston compression, the joint of the silica gel tube and the air release valve starts to leak air, the rapid temperature sensor detects the temperature change of the air in the whole process, and the moving end displays a temperature change curve;
step four: the depth of the silicone tube inserted into the air release valve is controlled to be a preset depth h 1 The piston is manually and slowly compressed until the bottom of the piston wall, in the process, at a certain moment in the latter half of piston compression, the joint of the silica gel tube and the air release valve starts to leak air, the rapid temperature sensor detects the temperature change of the air in the whole process, and the movable end displays a temperature change curve;
step five: changing the depth of the silica gel tube inserted into the air release valve to be h 2 Repeating the third and fourth steps to perform the comparison experiment of rapid compression and slow compression at different depths;
step six: and (5) carrying out experimental analysis to obtain an experimental conclusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122768912.1U CN219066302U (en) | 2021-11-12 | 2021-11-12 | Experimental device for temperature change during quantitative study gas expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122768912.1U CN219066302U (en) | 2021-11-12 | 2021-11-12 | Experimental device for temperature change during quantitative study gas expansion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219066302U true CN219066302U (en) | 2023-05-23 |
Family
ID=86363520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122768912.1U Active CN219066302U (en) | 2021-11-12 | 2021-11-12 | Experimental device for temperature change during quantitative study gas expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219066302U (en) |
-
2021
- 2021-11-12 CN CN202122768912.1U patent/CN219066302U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219066302U (en) | Experimental device for temperature change during quantitative study gas expansion | |
| ES474894A1 (en) | An instrument for placing material into both canals of the fallopian tubes. | |
| US6560550B2 (en) | Device and method for indirect measurement of physical property of rock and soil | |
| CN108844696A (en) | A kind of gas tubular detection device | |
| CN113982572B (en) | Fracturing energy storage integrated experimental method and experimental device | |
| CN104645527A (en) | Fire extinguisher air-inflation clamping fixing device | |
| KR102061419B1 (en) | Removable Repetitive Measuring Apparatus for texture of food | |
| US20210356452A1 (en) | System and method for testing cement | |
| US20090035744A1 (en) | Apparatus and Method for Separating and Storing Human Reproductive Material in a Cryotank | |
| CN111474169B (en) | Cancer detection kit | |
| CN108961967A (en) | Hot pressing hydrocarbon simulates kettle | |
| US2853873A (en) | Field calibrator for combustible gas analyzer | |
| CN211669025U (en) | Rock core gas permeability detection device | |
| CN205984027U (en) | Novel water boiling experiment demonstration device | |
| CN102831804B (en) | Tester for air intermolecular acting force | |
| CN214705130U (en) | Air pressure research device | |
| CN102353416B (en) | Synchronization pressure measurement-based cylinder cover volume detection device and method | |
| CN207730725U (en) | A kind of related CO2Deliquescent experimental system | |
| CN110954278A (en) | Leak detection method | |
| CN209941013U (en) | Cell pressure device | |
| CN207689213U (en) | A kind of syringe for shifting the single-needle double needle of gas | |
| CN202119499U (en) | Cylinder cover volume detecting device based on synchronous pressure measurement | |
| CN219715288U (en) | Device for researching swelling pressure leakage mechanism of white spirit conveying pipeline | |
| CN205937842U (en) | A thieff hatch support stopper for monitoring of pollution sources flue gas | |
| CN2603985Y (en) | Body internal energy variation demonstrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |