Cosmic ray scientific demonstration instrument

Abstract

The utility model discloses a cosmic ray scientific demonstration instrument. The cosmic ray scientific demonstration instrument comprises an evaporation layer (1), a transparent shell demonstration layer (2) and a refrigeration layer (3) which are sequentially stacked from top to bottom, wherein two ends of the transparent shell demonstration layer (2) are respectively connected with the evaporation layer (1) and the refrigeration layer (3) in a sealed manner to form a transparent sealed space; the evaporation layer (1) is used for carrying out low-temperature heating on ethanol or methanol to generate steam and enabling the steam to enter the transparent shell demonstration layer (2); the refrigeration layer (3) is used for reducing the temperature of steam in the transparent shell demonstration layer (2) to form supersaturated steam; and the transparent shell demonstration layer (2) is used for observing the track of incident ray particles by using the stored supersaturated steam. The device is ingenious and compact in structural design, can clearly observe the motion trail of particles, has the characteristics of large observation space, obvious demonstration effect, good mobility and the like, is suitable for various demonstration scenes, and can demonstrate to multiple persons at the same time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of teaching demonstration instrument, and relates to a cosmic ray scientific demonstration instrument. BACKGROUND

[0002] The working principle of Wilson cloud chamber: pure steam is adiabatically expanded or temperature is reduced to reach supersaturation state, at this time, charged particles are shot in, ions are generated in the path, and the supersaturated gas is condensed into small droplets with the ions as cores, so that the track of the particles is displayed, and the particles are observed or photographed.

[0003] The working principle of Wilson cloud chamber can be used to make a cosmic ray demonstration instrument for observing particles from the universe and daily life. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model aims at providing a cosmic ray scientific demonstration instrument. The cosmic ray scientific demonstration instrument adopts a cage drawer type modular structure design, the refrigeration layer, the observation layer and the evaporation layer are independently designed and stacked together from bottom to top, the structure design is ingenious and compact.

[0005] The technical scheme of the utility model is as follows:

[0006] A cosmic ray scientific demonstration instrument, which comprises an evaporation layer 1, a transparent shell demonstration layer 2 and a refrigeration layer 3 stacked from top to bottom in sequence.

[0007] The evaporation layer 1 is used for low-temperature heating of ethanol or methanol to generate steam and enter the transparent shell demonstration layer 2.

[0008] The refrigeration layer 3 is used for reducing the steam temperature in the transparent shell demonstration layer 2 to form supersaturated steam.

[0009] The transparent shell demonstration layer 2 is used for observing the track of incident charged particles by using the stored supersaturated steam.

[0010] Further, the refrigeration layer 3 comprises a refrigeration layer cover 32 and a refrigeration layer bottom shell 35, the refrigeration layer cover 32 is arranged at the top opening of the refrigeration layer bottom shell 35, a plurality of small holes are arranged on the side wall of the refrigeration layer bottom shell 35; a refrigeration plate 31 is arranged on the upper surface of the refrigeration layer cover 32, the refrigeration plate 31 is used for reducing the steam temperature in the transparent shell demonstration layer 2; a plurality of through holes are arranged on the refrigeration layer cover 32, one semiconductor refrigeration piece 33 is arranged in each through hole, the cold end of the semiconductor refrigeration piece 33 is used for cooling the refrigeration plate 31, the hot end of the semiconductor refrigeration piece 33 is connected with a water cooler 34, the water cooler 34 is used for taking away the heat generated by the hot end of the semiconductor refrigeration piece 33 through water cooling; a water cooling fan 37 is arranged below the refrigeration layer cover 32, the water cooling fan 37 is used for taking away the heat brought back by the water cooler 34 through blowing and the small holes.

[0011] Further, a heat insulation pad 36 is arranged between the refrigeration plate 31 and the refrigeration layer cover 32.

[0012] Further, the evaporation layer 1 comprises an upper cover 13, an evaporation dish 15 and an evaporation layer sealing layer 14; the upper cover 13 is connected with the upper end opening of the evaporation dish 15, exhaust holes 11 and liquid filling openings 12 are arranged on the upper cover 13, the exhaust holes 11 are used for exhausting the steam in the evaporation layer after the demonstration is finished, the liquid filling openings 12 are used for filling ethanol or methanol into the evaporation dish 15; the evaporation dish 15 extends into the transparent shell demonstration layer 2 and is used for containing ethanol or methanol and generating steam by low-temperature heating; the lower end of the upper cover 13 is sealingly connected with the upper end of the transparent shell demonstration layer 2 through the evaporation layer sealing layer 14.

[0013] Further, the refrigeration layer 3 further comprises a control circuit and a touch screen 38, which are used for controlling the semiconductor refrigeration piece 33, the water cooler 34, the water cooling fan 37 and the evaporation dish 15.

[0014] Further, the transparent shell demonstration layer 2 comprises LED lamp strips 21 and a demonstration layer positioning support 22; the LED lamp strips 21 are used for irradiating the supersaturated steam, so that the particle track is more obvious; the demonstration layer positioning support 22 is used for positioning the transparent shell of the transparent shell demonstration layer 2.

[0015] Further, the LED lamp strips 21 and the demonstration layer positioning support 22 are connected on the refrigeration layer cover 32 respectively.

[0016] The advantages of the utility model are as follows:

[0017] The utility model has the characteristics of large observation space, obvious demonstration effect, good mobility, is suitable for various demonstration scenes and can demonstrate to multiple people at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure diagram of the cosmic ray science demonstration instrument.

[0019] Figure 2 It is the structure diagram of the evaporation layer.

[0020] Figure 3 It is the structure diagram of the refrigeration layer.

[0021] Figure 4 It is the structure explosion diagram of the refrigeration layer.

[0022] The utility model discloses a cosmic ray science demonstration instrument, which comprises an evaporation layer, an acrylic transparent shell demonstration layer and a refrigeration layer. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail below in combination with the drawings, and the examples are only used for explaining the utility model and not for limiting the range of the utility model.

[0024] The cosmic ray science demonstration instrument is composed of an evaporation layer 1, an acrylic transparent shell demonstration layer 2 and a refrigeration layer 3 from top to bottom.

[0025] In the evaporation layer 1, the exhaust hole 11 is used to exhaust ethanol vapor in the space after the utility model ends demonstration, the liquid filling port 12 is used to fill ethanol into the evaporation dish 15, the upper cover 13 is part of the appearance shell of the utility model, the evaporation layer sealing layer 14 is used to form a sealed demonstration space with the acrylic transparent shell demonstration layer 2, and the evaporation dish 15 is used to contain ethanol and can be heated at low temperature to make ethanol evaporate quickly.

[0026] The acrylic transparent shell demonstration layer 2 is composed of a transparent acrylic shell, forms a transparent sealed space with the evaporation layer 1 above and the refrigeration layer 3 below, is used to form ethanol supersaturated vapor and is used for particle track formation and observation.

[0027] In the refrigeration layer 3, the refrigeration plate 31 is a copper plate with black surface, mainly responsible for reducing the ethanol vapor temperature in the demonstration layer, forming ethanol supersaturated vapor near the surface of the refrigeration plate 31; the refrigeration layer cover 32 is a bearing carrier of the refrigeration and demonstration structure (including the refrigeration plate 31, the semiconductor refrigeration sheet 33, the water cooler 34, the heat insulation pad 36, the LED lamp strip 21, the demonstration layer positioning support 22); the semiconductor refrigeration sheet 33 is a core element of the refrigeration function, responsible for cooling the refrigeration plate 31 through the cold end; the water cooler 34 is responsible for taking away the heat generated by the hot end of the semiconductor refrigeration sheet 33 through water cooling; the refrigeration layer bottom shell 35 is the shell and bearing structure of the whole refrigeration layer 3; the heat insulation pad 36 is below the refrigeration plate 31, responsible for cold and heat insulation, improving the refrigeration effect of the demonstration layer; the water cooling fan 37 is responsible for dissipating the heat brought back by the water cooler 34 through blowing; the control circuit and touch screen 38 are used to control the functions of the utility model through software.

[0028] The cosmic ray science demonstration instrument adds an appropriate amount of anhydrous ethanol from the liquid filling port 12 before demonstration, and the ethanol is evaporated in the evaporating dish 15 through heating to form ethanol saturated vapor in the acrylic transparent shell demonstration layer 2.

[0029] During demonstration, the water cooler 34, the water cooling fan 37 and the semiconductor refrigeration sheet 33 are started through the control circuit and touch screen 38. After the semiconductor refrigeration sheet 33 is started, the cold end directly cools the refrigeration plate 31 in contact with it. When the temperature is reduced to a certain extent, ethanol supersaturated vapor is formed in the acrylic transparent shell demonstration layer 2. When particles pass through the ethanol supersaturated vapor, small droplets are obviously formed on the particle trajectory under the irradiation of the LED lamp strip 21, so that the trajectory of the particle flight is observed. The water cooler 34 and the water cooling fan 37 are responsible for dissipating the heat generated in the refrigeration process of the semiconductor refrigeration sheet 33.

[0030] After the demonstration is completed, the ethanol vapor in the demonstration layer can be blown out through the exhaust hole 11 by using the air blower to blow air into the demonstration layer through the liquid filling port 12.

[0031] Although the specific embodiments of the utility model are disclosed for the purpose of illustration, the purpose is to help understand the content of the utility model and to implement it, and those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims. Therefore, the utility model should not be limited to the disclosed content of the best embodiment, and the scope of protection claimed by the utility model is the scope defined by the claims.

Claims

1. A cosmic ray science demonstrator, characterized in that, It includes an evaporation layer (1), a transparent outer shell demonstration layer (2), and a cooling layer (3) stacked from top to bottom: the two ends of the transparent outer shell demonstration layer (2) are respectively sealed to the evaporation layer (1) and the cooling layer (3) to form a transparent sealed space; The evaporation layer (1) is used to heat ethanol or methanol at low temperature to generate vapor and enter the transparent outer shell demonstration layer (2); The cooling layer (3) is used to reduce the steam temperature inside the transparent outer shell demonstration layer (2) to form supersaturated steam; The transparent outer shell demonstration layer (2) is used to observe the trajectory of incident ray particles using stored supersaturated vapor; The cooling layer (3) includes a cooling layer cover (32) and a cooling layer bottom shell (36). The cooling layer cover (32) is located at the top opening of the cooling layer bottom shell (36), and the side wall of the cooling layer bottom shell (36) is provided with multiple small holes. A cooling plate (31) is provided on the upper surface of the cooling layer cover (32), and the cooling plate (31) is used to reduce the steam temperature inside the transparent outer shell demonstration layer (2). The cooling layer cover (32) is provided with several through holes, and a semiconductor cooling chip (33) is installed in each through hole. The cold end of the semiconductor cooling chip (33) is used to cool the cooling plate (31). The hot end of the semiconductor cooling chip (33) is connected to the water cooler (34). The water cooler (34) is used to remove the heat generated by the hot end of the semiconductor cooling chip (33) by water cooling. A water cooling fan (37) is provided below the cooling layer cover (32). The water cooling fan (37) is used to discharge the heat brought back from the water cooler (34) to the outside of the cooling layer by blowing air and the small hole.

2. The cosmic ray science demonstrator according to claim 1, characterized in that, A heat insulation pad (36) is provided between the cooling plate (31) and the cooling layer cover (32).

3. The cosmic ray science demonstrator according to claim 1, characterized in that, The evaporation layer (1) includes a top cover (13), an evaporation dish (15), and an evaporation layer sealing layer (14); the top cover (13) is connected to the upper opening of the evaporation dish (15), and the top cover (13) is provided with an exhaust hole (11) and a liquid filling port (12). The exhaust hole (11) is used to discharge the steam in the evaporation layer after the demonstration, and the liquid filling port (12) is used to fill the evaporation dish (15) with ethanol or methanol; the evaporation dish (15) extends into the interior of the transparent outer shell demonstration layer (2) and is used to hold ethanol or methanol and heat it at low temperature to generate steam; the lower end of the top cover (13) is sealed to the upper end of the transparent outer shell demonstration layer (2) through the evaporation layer sealing layer (14).

4. The cosmic ray science demonstrator according to claim 3, characterized in that, The cooling layer (3) also includes a control circuit and a touch screen (38) for controlling the semiconductor cooling chip (33), the water cooler (34), the water cooling fan (37) and the evaporating dish (15).

5. The cosmic ray science demonstrator according to claim 1, characterized in that, The transparent outer shell demonstration layer (2) includes an LED light strip (21) and a demonstration layer positioning bracket (22); the LED light strip (21) is used to irradiate the supersaturated vapor to make the particle trajectory more obvious; the demonstration layer positioning bracket (22) is used to position the transparent outer shell of the transparent outer shell demonstration layer (2).

6. The cosmic ray science demonstrator according to claim 5, characterized in that, The LED light strip (21) and the demonstration layer positioning bracket (22) are respectively connected to the cooling layer cover (32).

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