CN201111289Y - Thermal cycle demonstration device - Google Patents

Abstract

The utility model relates to a heat circulation demonstrator, belonging to an auxiliary teaching tool for middle-school physics and geography, which is characterized in that: glass tubes are used to make a closed pipeline that is a hoop shape and vertical with the ground, a heating bottle is arranged at lower corner of the closed pipeline, the heating bottle is filled with red liquid and small solid suspended particles, the heating bottle adopts electric heater to heat, once energized, the liquid in the heating bottle is expanded and raised, so as to cause liquid circulation in the loop, thereby demonstrating heat-expansion cold-contraction and heat circulation.

Description

A kind of thermal cycle demonstration device

One, technical field

The utility model belongs to middle school physics, geographical teaching assistant teaching aid, makes the demonstration device circulatory mediator with liquid, particularly the shape and structure of demonstration device.

Two, background technology

Expanding with heat and contract with cold is the required knowledge of middle school student, the expanding with heat and contract with cold of the physics teacher demonstration of the degree difference shown in cold and hot liquid with thermometer, and intuitive is poor.And geographical teacher says the circulation of ocean current, air flow, does not have demonstration equipment, and is very empty.

Three, summary of the invention

The utility model is to make effective a kind of the expanding with heat and contract with cold of ocular demonstration and cause liquid round-robin demonstration device and auxiliary geography and physics teaching in integrated environment.

1, technical scheme

Do or back-shaped and with glass tube perpendicular to the closing pipe line on plane, one inferior horn of pipeline is established a heating bottle, fill colored liquid and the suspension solid-state granule identical in its body with its proportion, install an electric heater additional on the top of bottle, liquid circulates in the enclosed environment in case energising, electric heater with heating bottle middle and upper part liquid and heat expansion rises, cause, be the destruction of anti-heat expansion shrinkage, in closing pipe line, install the emulsion tube decompression additional.

2, beneficial effect

The ocular demonstration teaching efficiency is good.

Four, description of drawings

Fig. 1 is a kind of thermal cycle demonstration device front elevation

Among Fig. 1: loop glass-tube 1 emulsion tube 2 heating bottles 3 rubber plugs 4 electric heaters 5 plugs 6 feed tubes 7 colored liquids 8 suspension solid granulates 9 tongses 10

Five, embodiment

(length is millimeter)

Be made into 50 * 200 * 100 U-shaped pipe with the glass-tube of diameter 10, long at the emulsion tube 100 of 100 long pipe ends cover diameters 10, wear the glass-tube of 100 long diameters 10 again at the latex pipe end, promptly made loop glass-tube 1.Adopt 500 milliliters of vials as heating bottle 3 with suitable for reading and downside mouth, join rubber plug 4 at its two mouthfuls, and respectively bore the hole of a diameter 10, the 1 liang of glass-tube end in loop is inserted in the hole by shown in Figure 1, adopt 100 watts of little electric heaters 5 of straight formula, and on heating bottle 3 rubber plugs suitable for reading, make a call to a hole and be inserted in the hole.Electric heater 5 attachment plugs 6, other bores the aperture of a diameter 10 on rubber plug 4 suitable for reading, plug in the glass-tube of 50 long one section diameter 10, and the emulsion tube that 100 long one section diameter 10 are overlapped in the glass-tube upper end, is irritated fluid inspection and is stopped the phenomenon of leakage after a complete set of equipment is finished as feed tube 7.Get 98% ethanol, add the Sudan I and dye redness, add an amount of sawdust chip again, water is regulated ethanol proportion, make wood chip suspend wherein after, from full this demonstration device of inlet can, clamp the latex mouth of pipe with tongs 10.

Claims (2)

1, a kind of thermal cycle demonstration device is made hot circulating medium with liquid, it is characterized in that demonstration device is made of loop glass-tube, heating bottle, is full of the solid granule of band look liquid and suspension in the demonstration device.

2, a kind of thermal cycle demonstration device according to claim 1 is characterized in that electric heater is arranged in the heating bottle.