CN202275543U - Simple neutralization heat meter - Google Patents
Simple neutralization heat meter Download PDFInfo
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- CN202275543U CN202275543U CN2011204295314U CN201120429531U CN202275543U CN 202275543 U CN202275543 U CN 202275543U CN 2011204295314 U CN2011204295314 U CN 2011204295314U CN 201120429531 U CN201120429531 U CN 201120429531U CN 202275543 U CN202275543 U CN 202275543U
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- calorimeter
- neutralization
- temperature
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Abstract
The utility model relates to an experimental apparatus for measuring heating value in chemical teaching, in particular to a simple neutralization heat meter with the advantages of convenience for use, remarkable reaction phenomenon and low cost. The simple neutralization heat meter comprises a base (1), a reaction tube (2) arranged on the base (1), a sealing plug (3) matched with an opening of the reaction tube (2), a measurement tube (4) arranged by penetrating through the sealing plug (3), a temperature unit scale (6) and a constant-voltage switch (7) which are arranged on the sealing plug (3), a temperature sensing airbag (8) arranged at the lower end of the measurement tube (4), and a colored liquid column (9) arranged in the upper part of the measurement tube (4). By using a contraction and expansion principle, closed gas in the temperature sensing airbag (8) is expanded by heating to drive the colored liquid column (9) inside the upside of the measurement tube (4) to raise, and required data is measured. The simple neutralization heat meter has the beneficial effects of reasonable design, skilled structure, simple operation, small volume, wide application range, accuracy in measuring an energy change value, and less consumption of an experiment agent.
Description
Technical field
The utility model relates to the experimental apparatus of measuring thermal value in the chemistry teaching, is specially a kind of simple and easy heat of neutralization calorimeter.
Background technology
All be accompanied by thermal effect in many physics or the chemical change process, the release or the absorption of heat are promptly arranged,, can confirm the empirical value that other need indirectly through to these mensuration that discharges the heat that perhaps absorbs.Thus, calorimeter has produced with regard to corresponding, and so-called calorimeter is also claimed calorimeter, calorimeter or calorimeter, and it is a kind of instrument of measuring heat flux in chemistry or physical reactions, the conversion, and in simple terms, the instrument of measuring thermal effect just is called calorimeter.Along with the development of society and the raising of science and technology, the kind of calorimeter also is on the increase, and precision is also in continuous improve, and the general measure heating power is used bomb calorimeter, and what the measurement heat of neutralization was used more is heat-conducted calorimeter.
Teach an edition chemistry to take as an elective course in 4 people in 2004, " mensuration of neutralization reaction reaction heat " experiment is an experiment of having relatively high expectations, and the data that require to record are relatively near theoretical value.The heat of neutralization is meant the reaction heat that is produced when acid generates 1mol water with alkali generation neutralization reaction in lean solution.For the determination experiment of the heat of neutralization that middle school student did, though the calorimeter that is adopted has higher sensitivity, but exist cost an arm and a leg, difficult in maintenance, use loaded down with trivial details, problem such as manageability not, the precision aspect also can only be accurate to 1 degree.Use supporting calorimeter not only need carry out complicated operations; And, laboratory can have that instrument is few, a people does the situation that many people see for receiving the school of economics dictate; Not only can not make the student well observe experimental data; And make the student lose the chance of direct perception experimental phenomena, reduced students to the interest of experiment and the effect of classroom instruction.
Summary of the invention
It is a kind of easy to use that the purpose of the utility model is to provide, and reacting phenomenon is obvious, simple and easy heat of neutralization calorimeter with low cost.
The simple and easy heat of neutralization calorimeter of the utility model comprises base 1, reaction tube 2, sealing-plug 3, measures pipe 4 and temperature unit scale 6, it is characterized in that described calorimeter also comprises constant voltage switch 7, temperature-sensitive air bag 8 and coloured fluid column 9; Described reaction tube 2 bottom end seal are arranged on the base 1, and open upper end also is combined with the sealing-plug 3 that is tightly connected; Measure pipe 4 and pass sealing-plug 3 settings, the lower end is connected with the temperature-sensitive air bag 8 that places reaction tube 2 bottoms, open upper end; Measure in the part that pipe 4 stretches out sealing-plug 3 coloured fluid column 9 of long 1 to 2 centimetre is housed, and be provided with near the temperature unit scale 6 that sealing-plug 3 tops connect; Constant voltage switch 7 is arranged on the sealing-plug 3.
Further, described sealing-plug 3 center upper portion also vertically are connected with and are arranged on temperature unit scale 6 pole 5 behind.
Further, described temperature unit scale 6 is processed by paper or timber.
Further, described coloured fluid column 9 is a red ink.
The simple and easy heat of neutralization calorimeter of the utility model utilizes hot account shrinkage principle, and the effect of expanding with heat and contract with cold of gas is obvious in addition; Thereby can be so that reaction produce in the heat of neutralization in reaction tube 2, be connected that airtight in the temperature-sensitive air bag 8 of measuring pipe 4 lower ends when gases are heated, they expand, air pressure strengthens; Thereby coloured fluid column 9 of drive measuring pipe 4 upper interior rises, and can record needed data, in the course of reaction through the inside and outside air pressure pressure of constant voltage switch 7 conditioned reaction pipes 2; Guarantee reaction conditions, after reaction finished, gas temperature airtight in the temperature-sensitive air bag 8 reduced; Restore to the original state, can experimentize once more; Its beneficial effect is that reasonable in design, structure is ingenious, and is simple to operate; Easy to make, advantages of small volume, the energy changing pH-value determination pH is accurate, and the experimental pharmacy consumption is few; Applied widely, very meet at present new curriculum reform requirement, have to utilize and apply on a large scale.
Description of drawings
Fig. 1 is the structural representation of the utility model
Fig. 2 is the synoptic diagram of structure in the utility model instance 2
Among the figure: base 1, reaction tube 2, sealing-plug 3, mensuration pipe 4, pole 5, temperature unit scale 6, constant voltage switch 7, temperature-sensitive air bag 8, coloured fluid column 9
Embodiment
Instance 1
The simple and easy heat of neutralization calorimeter of the utility model, as shown in Figure 1, it comprises base 1; Place the reaction tube 2 on the base 1,, pass the mensuration pipe 4 that sealing-plug 3 is provided with the sealing-plug 3 that reaction tube 2 openings are sealed and matched; Be vertically set on the pole 5 of sealing-plug 2 center upper portion; Be connected the temperature unit scale 6 on sealing-plug 3 and the pole 5, be arranged on the constant voltage switch 7 on the sealing-plug 3, and the coloured fluid column 9 that is arranged on 1 centimetre of length in the temperature-sensitive air bag 8 of measuring pipe 4 lower ends and its top; Measure part that pipe 4 stretches out sealing-plug 3 and abut against on the temperature unit scale 6 and be provided with, temperature unit scale 6 is processed by timber, and temperature-sensitive air bag 8 is placed on the bottom of reaction tube 2.
When using the utility model to carry out heat of neutralization determination experiment; Open constant voltage switch 7 earlier; Keep reaction tube 2 inside and outside pressure to equate that the 0.5mol/l hydrochloric acid that then 5ml is configured joins in the reaction tube 2, writes down coloured fluid column 9 lower limbs residing scale on temperature unit scale 6; Be initial temperature, charge in the table; The 0.55mol/l NaOH solution that then 5ml is configured joins in the reaction tube 2, closes the loss that constant voltage switch 7 avoids reacting the heat of neutralization; Vibration gently at last; After liberated heat was heated the temperature-sensitive air bag 8 interior air of measuring the setting of pipe 4 lower ends in the neutralization reaction process, the swollen account of volume promoted coloured fluid column 9 and rises rapidly; When stopping rising; The residing scale of coloured fluid column 9 lower limbs both for the maximum temperature of reaction, was final temperature, charged in the table.
The simple and easy heat of neutralization calorimeter of the utility model, as shown in Figure 2, when carrying out oneself making, do reaction tube 2 with the needle tubing of syringe, it is inserted on the base of being processed by rubber plug 1, the inner syringe needle place that connects is with supporting piston seal; Use supporting piston own as sealing-plug 3; Push rod is as pole 5, and temperature unit scale 6 is made of paper, and the temperature-sensitive air bag 8 of measuring pipe 4 and lower end is processed by the minim pipette that is connected on woven hose and the woven hose; One section sealing of minim pipette; The woven hose that another section connection is passed from sealing-plug 3, woven hose top vertically is provided with near the push rod as pole 5, and temperature unit scale 6 is arranged on pole 5 and measures between the pipe 4; Insert sealing-plug 3 as constant voltage switch 7 with syringe needle, coloured fluid column 9 of measuring in the pipe 4 is the red ink of 2 centimeter length.It is in when operation, and to being operating as the insertion of syringe needle and extracting of constant voltage switch 7, all the other operations are said with instance 1.
Claims (4)
1. simple and easy heat of neutralization calorimeter comprises base (1), reaction tube (2), sealing-plug (3), measures pipe (4) and temperature unit scale (6), it is characterized in that described calorimeter also comprises constant voltage switch (7), temperature-sensitive air bag (8) and coloured fluid column (9); Described reaction tube (2) bottom end seal is arranged on the base (1), and open upper end also is combined with the sealing-plug (3) that is tightly connected; Measure pipe (4) and pass sealing-plug (3) setting; The lower end is connected with the temperature-sensitive air bag (8) that places reaction tube (2) bottom; Open upper end is stretched out coloured fluid column (9) of long 1 to 2 centimetre is housed in the part of sealing-plug, and is provided with near the temperature unit scale (6) that sealing-plug (3) top connects; Constant voltage switch (7) is arranged on the sealing-plug (3).
2. simple and easy heat of neutralization calorimeter as claimed in claim 1 is characterized in that, described sealing-plug (3) center upper portion also vertically is connected with and is arranged on temperature unit scale (6) pole (5) behind.
3. simple and easy heat of neutralization calorimeter as claimed in claim 2 is characterized in that described temperature unit scale (6) is processed by paper or timber.
4. simple and easy heat of neutralization calorimeter as claimed in claim 1 is characterized in that described coloured fluid column (9) is a red ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204295314U CN202275543U (en) | 2011-11-02 | 2011-11-02 | Simple neutralization heat meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204295314U CN202275543U (en) | 2011-11-02 | 2011-11-02 | Simple neutralization heat meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275543U true CN202275543U (en) | 2012-06-13 |
Family
ID=46195889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204295314U Expired - Fee Related CN202275543U (en) | 2011-11-02 | 2011-11-02 | Simple neutralization heat meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275543U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240559A (en) * | 2014-09-09 | 2014-12-24 | 郑州萃智电子技术有限公司 | Energy measurement teaching aid |
| CN110873610A (en) * | 2018-09-03 | 2020-03-10 | 宁波方太厨具有限公司 | Device for measuring temperature in equipment cavity |
-
2011
- 2011-11-02 CN CN2011204295314U patent/CN202275543U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240559A (en) * | 2014-09-09 | 2014-12-24 | 郑州萃智电子技术有限公司 | Energy measurement teaching aid |
| CN110873610A (en) * | 2018-09-03 | 2020-03-10 | 宁波方太厨具有限公司 | Device for measuring temperature in equipment cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20121102 |