CN2520539Y - Multipurpose demonstrator for measuring atmospheric pressure - Google Patents
Multipurpose demonstrator for measuring atmospheric pressure Download PDFInfo
- Publication number
- CN2520539Y CN2520539Y CN 02228400 CN02228400U CN2520539Y CN 2520539 Y CN2520539 Y CN 2520539Y CN 02228400 CN02228400 CN 02228400 CN 02228400 U CN02228400 U CN 02228400U CN 2520539 Y CN2520539 Y CN 2520539Y
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- China
- Prior art keywords
- mercury
- air chamber
- atmospheric pressure
- tube
- refrigerator
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- Expired - Fee Related
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Abstract
The utility model discloses a multipurpose demonstrator for detecting atmosphere pressure intensity, which comprises a mercury tube, an air chamber, a mercury storage chamber, and a chassis. A scale-plate is arranged on the side of the mercury tube, and a baffle is mounted between the mercury tube and the air chamber. Two eyelets are opened on the upper portion of the baffle, the mercury storage chamber is positioned at the lower portion of the air chamber, and the upper portion of the air chamber is provided with holes. Closure plugs are arranged in the holes. A thermometer, a refrigerator, a heat-producer and a vent pipe are fixed in the air chamber through the closure plugs. The refrigerator and the heat-producer are connected with the power system arranged on the chassis through directing lines. With the structure, demonstration experiment can be finished under the condition of total-enclosure, which efficiently avoids operators directly contact with mercury, and prevents from polluting the environment, and directly views the whole experiment demonstration process. The utility model has the advantages of simple structure, convenient experiment operation and the like.
Description
Technical field
The utility model relates to a kind of middle school physical experiment instrument, and particularly a kind of atmospheric pressure is measured and used demonstrator more.
Background technology
Atmospheric pressure is measured glass tube that demonstrating appliance is one one end sealing and a mercury cell, a funnel in school's Physical Experiment now.Method is after glass tube is filled mercury, blocks the mouth of pipe with finger, stands upside down then in mercury cell, decontrols finger, measures out the height between interior mercury liquid level of pipe and the mercury cell liquid level again with a yardstick, and promptly the mercury column height draws the atmospheric pressure value.Operation like this, teacher's one people's difficulty is finished, and needs student assistant, and especially mercury can during drainage, very easily spills, and teacher's hand contacts with mercury, and the mercury particulate that sticks on hand easily scatters on dais, desk, pollutes and poisons.
The experiment of " gas property " law, demonstrating appliance is several glass tubes, flexible pipe, ruler, gas container, thermometer, tank, piston component etc., with the mercury sealing, cold and hot water-bath gas methods experiment.In the experiment, device will repeatedly make up, difficult operation, and the atmospheric pressure value is an assumed value, and data will just can draw after measuring, calculating, and its parameter error is big.Experimentation is loaded down with trivial details, and the student is difficult for observing, and has increased the thinking difficulty.Easily spill when mercury can, drainage, in the operating process, also difficult control easily pollutes.
Summary of the invention
The purpose of this utility model will provide a kind of atmospheric pressure to measure the demonstrators of using exactly, it can make lecture experiment carry out under totally enclosed condition, avoided contacting of operator's hand and mercury, be difficult for causing environmental pollution, and the lecture experiment visual result, come into plain view.
The purpose of this utility model is achieved in that a kind of atmospheric pressure mensuration demonstrators of using more, comprise mercury tube 1, air chamber 2, mercury storeroom 3 and base 4, the mercury tube 1 other scale 5 that is provided with, between mercury tube 1 and the air chamber 2 dividing plate 6 is set, the top of dividing plate 6 has two apertures 7, mercury storeroom 3 is positioned at the bottom of air chamber 2, the top of air chamber 2 has hole 8, sealing-plug 9 is set on the hole 8, thermometer 10, refrigerator 11, heat-producing machine 12 and snorkel 13 pass sealing-plug 9 respectively and are fixed in the air chamber 2, and refrigerator 11 and heat-producing machine 12 link to each other by the supply unit 15 that is provided with on lead 14 and the base 4 respectively.Mercury tube 11 and scale 15 are arranged on to irritate and let out in the chamber 16.
Owing to adopt said structure, so lecture experiment is carried out under totally enclosed condition, avoided operator's hand to contact effectively, and whole experimental demonstration process is intuitively come into plain view with the direct of mercury.Can avoid causing the mercury pollution on the environment.Advantages such as that the utility model also has is simple in structure, convenient experimental operation.
Description of drawings
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is a structural representation of the present utility model.
Fig. 1 double as Figure of abstract.
Among the figure: 1, mercury tube, 2, air chamber, 3, the mercury storeroom, 4, base, 5, scale, 6, dividing plate, 7, aperture, 8, the hole, 9, sealing-plug, 10, thermometer, 11, refrigerator, 12, heat-producing machine, 13, snorkel, 14, lead, 15, supply unit, 16, irritate and let out the chamber.
Embodiment
Atmospheric pressure is as shown in Figure 1 measured the demonstrators of using more, comprise mercury tube 1, air chamber 2, mercury storeroom 3 and base 4, the mercury tube 1 other scale 5 that is provided with, between mercury tube 1 and the air chamber 2 dividing plate 6 is set, the top of dividing plate 6 has two apertures 7, mercury storeroom 3 is positioned at the bottom of air chamber 2, the top of air chamber 2 has hole 8, sealing-plug 9 is set on the hole 8, thermometer 10, refrigerator 11, heat-producing machine 12 and snorkel 13 pass sealing-plug 9 respectively and are fixed in the air chamber 2, refrigerator 11 and heat-producing machine 12 link to each other by the supply unit 15 that is provided with on lead 14 and the base 4 respectively, and mercury tube 11 and scale 15 are not put in chamber 16 is let out in filling.
When doing the atmospheric pressure determination experiment, load onto mercury tube 1 and scale 5 in chamber 16 is let out in filling, the mercury storeroom 3 that tilts then, mercury enter to irritate from the aperture 7 of storeroom 3 on dividing plate 6 automatically lets out chamber 16, flow in the mercury tube 1, after mercury is full of pipe, mercury storeroom 3 is vertical, at this moment, chamber 16 is let out in filling becomes high mercury chamber, mercury is under gravity and atmospheric pressure double action in the mercury tube 1, and the atmospheric pressure determination experiment is finished, and can directly read the high and atmospheric pressure value of mercury column on the scale 5.
When doing the experiment of gas property law, must finish the atmospheric pressure determination experiment earlier, promptly the mercury piezometer forms.
Gas property law experimental demonstration under the isothermy:
To quantitatively take out, the qi of chong channel ascending adversely body device receives on the snorkel 13, promotes then to take out, the qi of chong channel ascending adversely body device, this moment, gas volume dwindled, pressure increases, the mercury slug in the mercury tube 1 rises.Twitch is quantitatively taken out, the qi of chong channel ascending adversely body device, and this moment, gas volume increased, and pressure reduces, and the mercury slug in the mercury tube 1 descends.
Gas property law experimental demonstration under the pressure condition:
To put a deflated balloon on the snorkel 13, the heater switch on the energized device 15 then, electric current makes heat-producing machine 12 heating by lead 14, and this moment, gas temperature raise, and gas volume increases, and the balloon on the snorkel 13 fills greatly.Refrigeration switch on the energized device 15, electric current makes refrigerator 11 refrigeration by lead 14, and this moment, gas temperature descended, and gas volume reduces, and the balloon on the snorkel 13 dwindles.
Gas property law experimental demonstration under the equal-volume condition:
With snorkel 13 stopper jam-pack, the heater switch on the energized device 15 then, electric current makes by lead 14 and heats 12 heating, and this moment, gas temperature raise, and pressure increases, and the mercury slug in the mercury tube 1 rises.Refrigeration switch on the energized device 15, electric current makes refrigerator 11 refrigeration by lead 14, and this moment, gas temperature descended, and pressure reduces, and the mercury slug in the mercury tube 1 descends.
Claims (2)
1, a kind of atmospheric pressure is measured the demonstrators of using more, comprise mercury tube (1), air chamber (2), mercury storeroom (3) and base (4), it is characterized in that: the other scale (5) that is provided with of mercury tube (1), between mercury tube (1) and the air chamber (2) dividing plate (6) is set, the top of dividing plate (6) has two apertures (7), mercury storeroom (3) is positioned at the bottom of air chamber (2), the top of air chamber (2) has hole (8), sealing-plug (9) is set on the hole (8), thermometer (10), refrigerator (11), heat-producing machine (12) and snorkel (13) pass sealing-plug (9) respectively and are fixed in the air chamber (2), and refrigerator (11) is gone up the supply unit (15) that is provided with by lead (14) and base (4) respectively with heat-producing machine (12) and linked to each other.
2, a kind of atmospheric pressure according to claim 1 is measured and used demonstrator more, it is characterized in that: mercury tube (11) and scale (15) are arranged on to irritate and let out in the chamber (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228400 CN2520539Y (en) | 2002-02-06 | 2002-02-06 | Multipurpose demonstrator for measuring atmospheric pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228400 CN2520539Y (en) | 2002-02-06 | 2002-02-06 | Multipurpose demonstrator for measuring atmospheric pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2520539Y true CN2520539Y (en) | 2002-11-13 |
Family
ID=33704976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02228400 Expired - Fee Related CN2520539Y (en) | 2002-02-06 | 2002-02-06 | Multipurpose demonstrator for measuring atmospheric pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2520539Y (en) |
-
2002
- 2002-02-06 CN CN 02228400 patent/CN2520539Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |