CN213635008U

CN213635008U - Experimental device for changing internal energy by object acting

Info

Publication number: CN213635008U
Application number: CN202022589704.0U
Authority: CN
Inventors: 严承咸
Original assignee: Hangzhou Qiandaohu Jianlan Middle School
Current assignee: Hangzhou Qiandaohu Jianlan Middle School
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-07-06
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses an experimental device for changing internal energy by applying work to an object, which comprises a perspective bottle and a balloon arranged in the perspective bottle, and is characterized in that the perspective bottle is provided with a bottle cap, the bottle cap is used as a support body, the bottle cap is provided with a valve inside, a thermometer and an air release pipe which pass through the bottle cap, and the air release pipe is provided with an air release valve; the balloon and the inner side of the bottle cap form a sealing structure, and the valve core, the thermometer and the air release pipe extend into the balloon. The change of internal energy changed by doing work has specific temperature digital display, so that the fuzzy experiment phenomenon becomes clear, specific and accurate, and the experiment result is changed from qualitative to quantitative; the experiment operation is convenient, and two experimental phenomena are completed by one-time operation; the internal energy change phenomenon is displayed by the balloon, the visibility is high, and the effect is obvious; the whole device is easy to obtain materials, simple to manufacture and low in cost.

Description

Experimental device for changing internal energy by object acting

Technical Field

The utility model relates to a teaching experiment utensil technique, especially an experimental apparatus that object work changes internal energy.

Background

Firstly, the internal energy of the object is changed by applying work; secondly, the object does work to the outside. The former can be understood by students in life phenomena, but the latter is few in teaching, and the main reason is that no experimental equipment is available, and the abstract theory is difficult to solve by using visual experiments.

In the section of the nine-year registration of the compulsory teaching material (internal energy of the object), an experiment that the external world applies work to the object to increase the internal energy of the object and increase the temperature is carried out, and when the experiment is carried out, the only existing experimental instrument is an 'air compression ignition instrument'. The biggest drawback of this experiment is the low success rate, especially for female teachers, which is difficult to succeed.

The devices in the prior art have limitations, such as a device for changing the internal energy of gas by doing work with patent publication No. CN 201829093U. Comprises a bottle body, a thermometer, a bottle cover and an air inlet pipe; the bottle body is a transparent glass bottle, the thermometer is a conventional thermometer, and the upper end of the thermometer is fixed at the lower end of the bottle cap and is used for displaying the temperature inside the bottle body; the bottle cap is used for sealing the bottle mouth of the bottle body; the air inlet pipe is hollow and tubular, is fixedly communicated with the bottle cover and is used for conveying air into the bottle body. The simple device can only observe the intuition of the pressure increase to the temperature change in the bottle body when acting to change the internal energy of the gas for experimental activities, and the deflation and pressure reduction processes and the air pressure increase and decrease amount can not be directly observed by students.

Disclosure of Invention

The utility model aims at solving the above problem, provide an experimental apparatus that object acting changes interior energy, it has the experimental characteristics that can demonstrate "external acting to the object", also can demonstrate "the object acting to the external world".

The above technical problem of the present invention can be solved by the following technical solutions: an experimental device for changing internal energy by applying work to an object comprises a perspective bottle and a balloon arranged in the perspective bottle, and is characterized in that the perspective bottle is provided with a bottle cap, the bottle cap is used as a support body, the bottle cap is provided with a valve inside, a thermometer and an air release pipe, and the air release pipe is provided with an air release valve; the balloon and the inner side of the bottle cap form a sealing structure, and the valve core, the thermometer and the air release pipe extend into the balloon.

In the experimental device for changing internal energy by applying work to the object, preferably, one end of the valve core and the air release pipe is located at the mouth of the balloon, the thermometer is of a probe type structure, and a probe of the thermometer extends into the abdomen of the balloon.

In the experimental device for changing the internal energy by the object doing work, preferably, the inner side of the bottle cap is provided with an auxiliary positioning tube, and the mouth of the balloon is fixed on the auxiliary positioning tube.

In the experimental device for changing the internal energy by the work of the object, preferably, the matching parts of the valve core, the thermometer and the bottle cap are provided with sealing sleeves.

In the experimental device for changing internal energy by applying work to the object, preferably, the valve core is internally provided with a one-way valve, the outer diameter of the valve core positioned outside the bottle cap is provided with external threads, and the valve core is fixed by nuts positioned on the inner side and the outer side of the bottle cap.

In the experimental apparatus for changing the internal energy by the work of the object, preferably, the outer diameter of the auxiliary positioning pipe is provided with a binding groove.

In the experimental device for changing the internal energy by the work of the object, preferably, the height of the auxiliary positioning pipe is greater than that of the bottle cap.

In the experimental device for changing the internal energy by the work of the object, preferably, the maximum expansion volume of the balloon is matched with the internal volume of the perspective bottle.

This technical scheme is with the perspective bottle that can bear certain pressure as the base member, at a fixed balloon in the bottle, can let the student feel the balloon inflation pressure boost directly perceivedly, the balloon reduces the gassing decompression process. The balloon, the valve inside, the air release pipe and the thermometer are all fixed on the inner side of the bottle cap by taking the bottle cap as a support body, and the balloon and the inner side of the bottle cap form a sealing structure to prevent air leakage. The valve core is provided with a one-way valve for one-way inflation and pressurization of the balloon; the reading meter of the thermometer is arranged outside the bottle cap, the temperature in the balloon is displayed in time, and the reading meter can be clear at a glance; the air release pipe also extends into the inner mouth of the balloon, and the air outlet is not influenced by the balloon for releasing air, so that the air release process is fully embodied.

The thermometer in the device is of a probe type structure, and can acquire the temperature of the central part of the balloon.

Furthermore, the inner side of the bottle cap is provided with an annular auxiliary positioning tube which is integrated with the bottle cap, is specially used for fixing the balloon, and can be bound and fixed by adding a rubber band, a rope and the like to avoid falling off. The parts fixed on the bottle cap are provided with sealing sleeves at the matching parts of the parts and the bottle cap, so that the parts are sealed, and are shockproof and anti-twisting. The height of the auxiliary positioning pipe is larger than that of the bottle cap, so that components are convenient to assemble.

Generally, the internal volume of the see-through bottle is to ensure the maximum volume of the balloon after inflation, or a little less, so as to avoid the balloon from excessively bursting and fully sense the gas change process.

Compared with the prior art, the beneficial effects of the utility model are that: the change of internal energy changed by doing work has specific temperature digital display, so that the fuzzy experiment phenomenon becomes clear, specific and accurate, and the experiment result is changed from qualitative to quantitative; the experiment operation is convenient, and two experimental phenomena are completed by one-time operation; the internal energy change phenomenon is displayed by the balloon, the visibility is high, and the effect is obvious; the whole device is easy to obtain materials, simple to manufacture and low in cost.

Drawings

Fig. 1 is a schematic view of a structure of the present invention.

Fig. 2 is a schematic view of the bottle cap part assembling structure of the present invention.

Fig. 3 is a view illustrating a structure of a bottle cap according to the present invention.

In the figure: 1. the device comprises a perspective bottle, 2 parts of balloons, 3 parts of valve cores, 4 parts of thermometers, 5 parts of air release pipes, 6 parts of air release valves, 7 parts of bottle caps, 701 parts of auxiliary positioning pipes, 702 parts of through holes and 8 parts of sealing sleeves.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Referring to fig. 1 and 2, an experimental device for changing internal energy by applying work to an object comprises a perspective bottle 1 with a bottle cap 7, a balloon 2, a valve inside 3, a probe thermometer 4, an exhaust pipe 5 bent at an angle of 90 degrees, and an exhaust valve 6 arranged on the exhaust pipe 5.

The inner side of the bottle cap 7 is provided with an auxiliary positioning pipe 701, as shown in fig. 3, the auxiliary positioning pipe 701 is in a ring shape and is integrated with the bottle cap 7, the height of the auxiliary positioning pipe 701 is about 5mm larger than the bottle cap 7, and the outer diameter of the auxiliary positioning pipe 701 is provided with a binding groove. Bottle lid 7 is last to have seted up 3 through-

holes

702, and 3 through-holes 702 all are located the diameter range that auxiliary positioning pipe 701 corresponds. The valve core 3 is installed through the screw 702, a one-way valve is arranged in the valve core 3, external threads are arranged on the outer diameter of the valve core 3 positioned outside the bottle cap 7, and the valve core 3 is fixed through two nuts positioned on the inner side and the outer side of the bottle cap 7; the other through hole 702 is used for positioning the thermometer 4, a probe of the thermometer 4 extends into the center of the abdomen of the balloon, and a sealing sleeve 8 is arranged at the matching point of the thermometer 4 and the bottle cap 7; the third through hole 702 is used for fixing the air release pipe 5, and a sealing sleeve 8 is also arranged at the matching point of the air release pipe 5 and the bottle cap 7. The bottle cap 7 is used as a support body for all three parts. After the balloon 2 is connected with the inner side sleeve of the bottle cap 7, a rubber band is additionally arranged to form a sealing matching structure. The maximum expansion volume of the balloon 2 is matched with the inner volume of the perspective bottle 1.

During the experiment, close bleed valve 6, utilize ordinary portable inflater to aerify from valve inside 3 to balloon 2 in, see through the perspective bottle 1 and can observe balloon 2 inflation, read thermometer 4 and show that the temperature rises gradually, accomplish the external work test to the object. Stopping inflating, slowly opening the air release valve 6 to exhaust, and in the exhaust process, the balloon 2 is reduced, the thermometer 4 displays temperature reduction, and the work test of the demonstration object to the outside is completed.

The above-mentioned embodiment is right the utility model discloses an explanation, any is right the utility model discloses a structure etc. after the simple transform all belong to the protection scope of the utility model.

Claims

1. An experimental device for changing internal energy by applying work to an object comprises a perspective bottle (1) and a balloon (2) arranged in the perspective bottle, and is characterized in that a bottle cap (7) is arranged on the perspective bottle, the bottle cap is used as a support body, a valve core (3) penetrating through the bottle cap, a thermometer (4) and an air release pipe (5) are arranged on the bottle cap, and an air release valve (6) is arranged on the air release pipe; the balloon and the inner side of the bottle cap form a sealing structure, and the valve core, the thermometer and the air release pipe extend into the balloon.

2. The experimental device for changing internal energy by doing work on an object according to claim 1, wherein one end of the valve core (3) and one end of the air release pipe (5) are located at the mouth of the balloon (2), the thermometer (4) is of a probe type structure, and a probe of the thermometer extends into the abdomen of the balloon.

3. An experimental device for changing internal energy by doing work on an object according to claim 1, characterized in that an auxiliary positioning tube (701) is arranged on the inner side of the bottle cap (7), and the mouth of the balloon (2) is fixed on the auxiliary positioning tube.

4. An experimental device for changing internal energy by applying work to an object according to claim 1, 2 or 3, characterized in that a sealing sleeve (8) is arranged at the matching part of the valve core (3), the thermometer (4) and the bottle cap (7).

5. The experimental device for changing the internal energy by applying work to an object according to claim 1, wherein a one-way valve is arranged in the valve core (3), external threads are arranged on the outer diameter of the valve core positioned outside the bottle cap (7), and the valve core is fixed by nuts positioned on the inner side and the outer side of the bottle cap.

6. An experimental device for changing internal energy by doing work on an object according to claim 3, wherein the outer diameter of the auxiliary positioning tube (701) is provided with a binding groove.

7. Experimental device for changing internal energy by doing work on object according to claim 3 or 6, characterized in that the height of the auxiliary positioning tube (701) is larger than the bottle cap (7).

8. An experimental device for changing internal energy by doing work on an object according to claim 1, 2, 3, 5 or 6, characterized in that the maximum expansion volume of the balloon (2) is matched with the internal volume of the see-through bottle (1).