CN206075650U - A kind of specific heat capacity tester - Google Patents

Abstract

The utility model discloses a kind of specific heat capacity tester, including：Base with two grooves；For two glass containers being separately mounted in described two grooves；The container cover that open top sealing with the glass container coordinates；The calandria being placed in the glass container；Red coolant-temperature gage meter, is extend in the glass container by the thermometer hole of the container cover；Connect the low-tension supply of the calandria；Wherein, two calandrias and the low-tension supply being separately mounted in two glass containers is connected in parallel.This utility model high insulating effect, experiment effect substantially, are easy to student's operation and are understood, simple structure, simple to operate, safety.

Description

A kind of specific heat capacity tester

Technical field

This utility model is related to instruments used for education, more particularly to a kind of specific heat capacity tester.

Background technology

Junior physicses textbook understands for the ease of student that when the concept of specific heat capacity is lectured usual Binding experiment is taught now Learn.Most schools are compared demonstration using water and oily two kinds of liquid, heat when specific heat capacity experimental teaching is carried out at present Source is alcohol burner, and alcohol burner heating is suffered from the drawback that：1st, it is dangerous；2nd, flame height is not easily controlled, and heating-up temperature is bad Control, inconvenient operation；3rd, heated liquid quick heating and it cannot be guaranteed that the heat that two kinds of liquid is obtained in experiment is identical, it is real Test teaching efficiency undesirable.

Some schools carry out experimental teaching using electrically heated mode at present, but heating source adopts 220V alternating currents pair Powerful electric-heating-wire-heating, suffers from the drawback that：1st, it is dangerous；2nd, liquid is made to heat up too fast, it is also difficult to it was observed that heated The temperature change of each time period in journey；3rd, as the container for being used for holding in heating process liquid is exposed in atmosphere, heating The heat of liquid afterwards is easy to be dispersed in air by container, and experiment effect is undesirable.

The content of the invention

The purpose of this utility model is exactly for the problem for overcoming above-mentioned prior art to exist, there is provided a kind of specific heat capacity experiment Device, high insulating effect, experiment effect substantially, are easy to student's operation and are understood, simple structure, simple to operate, safety.

In order to realize above-mentioned purpose of the present utility model, there is provided technical scheme below：

A kind of specific heat capacity tester, including：Base with two grooves；For being separately mounted in described two grooves Two glass containers；The container cover that open top sealing with the glass container coordinates；It is placed in the glass container Calandria；Red coolant-temperature gage meter, is extend in the glass container by the thermometer hole of the container cover；Connect the calandria Low-tension supply；Wherein, two calandrias and the low-tension supply being separately mounted in two glass containers is connected in parallel.

Preferably, the size of described two grooves is identical, the middle and lower part of each glass container and the groove close-fitting.

Preferably, the base is made up of foam.

Preferably, closely connected by rubber ring between the thermometer hole and the red coolant-temperature gage meter.

Preferably, the calandria is connected with the low-tension supply by binding post.

Preferably, one end of the binding post extend into the connection heating in the glass container through the container cover Body, the other end are located at outside the glass container and connect the low-tension supply.

Preferably, the other end of the binding post is provided with insulation sleeve.

Preferably, the calandria includes：The two parallel heating columns extended from the top of the glass container to bottom；Even The arc heating ring being connected between described two parallel heating column bottoms；Wherein, the top of described two parallel heating columns connects respectively One binding post.

Preferably, bottom of the arc heating ring parallel to the glass container.

Preferably, the resistance of the calandria is 5 Ω～10 Ω.

The beneficial effects of the utility model embody in the following areas：

1) rationally, structure composition is simple, safety simple to operate for this utility model design science, has both been adapted to teacher and also has been adapted for learning Raw to use, by testing in person, student can understand the concept for intuitively understanding and grasping specific heat capacity, experiment teaching effect satisfaction；

2) this utility model many places design insulation, sealing structure, prevent from heating liquid heat losses, it is ensured that experiment effect.

Description of the drawings

Fig. 1 is the structural representation of this utility model specific heat capacity tester (not shown power supply)；

Fig. 2 is the structural representation of the base shown in Fig. 1；

Fig. 3 is the structural representation of the glass container and its mounting assembly shown in Fig. 1.

Description of reference numerals：1- bases；11- grooves；2- glass containers；3- container cover；4- calandrias；41- heating columns； 42- arcs heat ring；5- binding posts；51- insulation sleeves；The red coolant-temperature gage meters of 6-；7- rubber rings.

Specific embodiment

As shown in Figures 1 to 3, this utility model provides a kind of specific heat capacity tester, including：Base with two grooves 11 1；For two glass containers 2 being separately mounted in two grooves 11, the open top of each glass container 2 is combined with container Lid 3；The calandria 4 being placed in glass container 2, for heating the liquid held in glass container 2；Red coolant-temperature gage meter 6, by holding The thermometer hole of device lid 3 is extend in the liquid that glass container 2 holds, for measuring the temperature of liquid；The low pressure of connection calandria 4 Power supply (not shown)；Wherein, the resistance of two calandrias 4 being separately mounted in two glass containers 2 is identical, and with One low-tension supply is connected in parallel, in order to provide identical heating condition to the different liquids in two glass containers 2.

This utility model is used to probe into the heat absorption capacity of the different liquids of two kinds of phase homogenous quantities under identical heating condition.

In order to ensure experimental result is accurately not emitted it is necessary to ensure the heat under identical heating condition, this utility model Many places are provided with sealing thermal insulation structure.

Two glass containers of the present embodiment adopt same size, and the size of two grooves 11 of base 1 is identical.Implement When, base 1 is made up of foam, middle and lower part and 11 close-fitting of groove of each glass container 2, for preventing the heat for heating liquid from dissipating Send out, play a part of keeping temperature.Certainly, base 1 can also be made up of remaining insulation material.

Further, the open top of each glass container 2 is coordinated with the sealing of container cover 3.Specifically, container cover 3 with Elastic seal ring is disposed with the contact surface of glass container 2,2 interior sealing of glass container is made, it is ensured that heat is prevented from losing.

Additionally, as shown in figure 3, rubber ring 7 is provided between the thermometer hole of container cover 3 and red coolant-temperature gage meter 6, rubber ring 7 can Guarantee to be tightly connected between thermometer hole and red coolant-temperature gage meter 6, prevent heat losses.Simultaneously as the elastic characteristic of rubber ring 7, Red coolant-temperature gage meter 6 can be moved up and down with respect to rubber ring 7, in order to red coolant-temperature gage meter 6 is adjusted to proper height relative to liquid level.

As shown in figure 3, the calandria 4 of the present embodiment is connected with low-tension supply by binding post 5.Wear one end of binding post 5 Cross container cover 3 and extend into connection calandria 4 in glass container 2, the other end is located at 2 outer connection low-tension supply of glass container.Wiring The part that post 5 is located at outside glass container 2 is provided with insulation sleeve 51, it is ensured that wiring safety.

The present embodiment is bottom-heated form.As shown in figure 3, calandria 4 includes：Top from glass container 2 is to bottom The two parallel heating columns 41 for extending；Arc heats ring 42.Wherein, connect arc heating ring between two parallel heating columns, 41 bottom 42；The top of two parallel heating columns 41 connects a binding post 5 respectively.Specifically, arc heats ring 42 parallel and close to glass The bottom of glass container 2, for realizing the uniform heating to liquid.

The present embodiment implement when, low-tension supply adopt alternating current-direct current, alternating current power supply rated voltage be 12V, DC source Rated voltage is 12V, and during actual experiment, normal experimental voltage may be set in 9～12V, and the resistance of calandria 4 is 5 Ω～10 Ω, under the heating condition, is being up to liquid continuous intensification in the heat time heating time of 10 minutes.So, this utility model is ensureing peace The programming rate of liquid can be controlled in the case of complete, makes student that each time period liquid liter of heating process is more easily observed The numerical value of temperature, can be got information about the concept of specific heat capacity, reach obvious experiment teaching effect by the utility model.

Although above-mentioned elaborate to this utility model, this utility model not limited to this, the skill of the art Art personnel can modify according to principle of the present utility model, therefore, it is all according to principle of the present utility model carry out it is various Modification all should be understood to fall into protection domain of the present utility model.

Claims (10)

1. a kind of specific heat capacity tester, it is characterised in that include：

Base with two grooves；

For two glass containers being separately mounted in described two grooves；

The container cover that open top sealing with the glass container coordinates；

The calandria being placed in the glass container；

Red coolant-temperature gage meter, is extend in the glass container by the thermometer hole of the container cover；

Connect the low-tension supply of the calandria；

Wherein, two calandrias and the low-tension supply being separately mounted in two glass containers is connected in parallel.

2. specific heat capacity tester according to claim 1, it is characterised in that the size of described two grooves is identical, each The middle and lower part of the glass container and the groove close-fitting.

3. specific heat capacity tester according to claim 2, it is characterised in that the base is made up of foam.

4. specific heat capacity tester according to claim 3, it is characterised in that the thermometer hole and the red coolant-temperature gage meter it Between closely connected by rubber ring.

5. specific heat capacity tester according to claim 4, it is characterised in that the calandria is low with described by binding post Voltage source connects.

6. specific heat capacity tester according to claim 5, it is characterised in that one end of the binding post passes through the container Lid extend into the connection calandria in the glass container, and the other end is located at outside the glass container and connects the low tension Source.

7. specific heat capacity tester according to claim 6, it is characterised in that the other end of the binding post is provided with insulation Set.

8. specific heat capacity tester according to claim 7, it is characterised in that the calandria includes：

The two parallel heating columns extended from the top of the glass container to bottom；

Arc heating ring for heating to liquid is connected between described two parallel heating column bottoms；

Wherein, the top of described two parallel heating columns connects a binding post respectively.

9. specific heat capacity tester according to claim 8, it is characterised in that the arc heats ring parallel to the glass The bottom of container.

10. specific heat capacity tester according to claim 9, it is characterised in that the resistance of the calandria is 5 Ω～10 Ω。