CN2135175Y

CN2135175Y - Body electric shock demonstrator

Info

Publication number: CN2135175Y
Application number: CN 92234098
Authority: CN
Inventors: 张三霍; 裴显让; 武永平
Original assignee: HEKOU TOWN MIDDLE SCHOOL GUJIAO CITY
Current assignee: HEKOU TOWN MIDDLE SCHOOL GUJIAO CITY
Priority date: 1992-10-05
Filing date: 1992-10-05
Publication date: 1993-06-02
Anticipated expiration: 2002-10-05

Abstract

The utility model relates to a demonstrator for electric shock of human bodies, which comprises a demonstrating box, a power supply, electric poles, electric wires, an earth analogous plate, and a human body electric shock dummy with an indicator and a buzzer. The utility model can present visually single line electric shock, double line electric shock, high and step voltage electric shock, the electric shock caused by high voltage electric arc, etc. The utility model has the advantages of visual presentation, easy understanding and secure use. The utility model is an idea teaching tool of safe use of electricity for primary and middle school students, and the utility model can also be used as the teaching tool for training electricians in the enterprises.

Description

Body electric shock demonstrator

The utility model relates to instruments used for education, especially a kind of human electric shock's demonstration device that is used for the safety utilization of electric power teaching.

Progress along with society, expanding economy, electric power not only becomes the main secondary energy of industrial or agricultural, and enter in people's daily life, but many people are because of lacking general safety utilization of electric power knowledge, and various types of electric shock accidentss happen occasionally, teenager particularly, because of its curiosity is very strong, active again, therefore the electric shock accidents incidence often is higher than the adult in the middle of them.At present in middle and primary schools' physics book, the content of courses of safety utilization of electric power aspect is all arranged in all kinds of book of teaching, but because of it lacks general teaching aid, can not ocular demonstration, beyond one's depth, teaching efficiency is not ideal enough.

The purpose of this utility model is so that help people to understand the electric shock principle intuitively, to grasp safety utilization of electric power general knowledge for safety utilization of electric power education provides a kind of human electric shock's demonstration device that can demonstrate multiple electric shock phenomenon, reduces electric shock accidents.

Human electric shock's demonstration device comprises: demonstration box 1, power supply, electric pole 11, electric wire etc. is characterized in that it also comprises:

The earth analog board 21, it is installed in the demonstration box 1, left side of face is provided with several step-down rings 18 on it, the right of step-down ring 18 is provided with simulation ground 19, all collapse between adjacent two rings of described step-down ring 18 and be connected to resistance R, leftmost step-down ring and hi-line land jack 17 and are connected, and rightmost step-down ring is connected with zero line binding post 10 with simulation ground 19; Electric pole 11 is inserted into respectively in the jack 40 at the earth analog board 21 two ends, and crosspiece 12 two ends on two electric poles 11 haul live wire 14, zero line 15 respectively, and live wire 14, zero line 15 are connected respectively to binding

post

9,10.

Electric shock manikin 13, it is a plastic toy doll, and the hand of model, pin are surrounded by metal level and constitute 4 contacts, are connected with several bulb Homeway.com Chinese percussion instruments in the model body, and model places above the earth analog board 21 during demonstration.

Described power supply includes direct current (or interchange) power supply 41 and can produce the induction coil 42 of high pressure, and direct current (or interchange) power supply 41 and induction coil 42 all are installed on the earth analog board 21 bottoms, and both output terminals can be connected respectively to corresponding binding

post

9,10.

The utility model description of drawings is as follows:

Fig. 1 is its structural representation;

Fig. 2 is its electric shock manikin figure;

Fig. 3 is its earth analog board synoptic diagram;

Fig. 4 is its electrical schematic diagram.

Further describe below in conjunction with accompanying drawing.Each parts as shown in Figure 1 are: the handle 2 on demonstration box 1, the cover plate 20, attaching plug 3, double-point double-throw switch 4, HT pilot 5, low pressure pilot lamp 6, plug 7, jack 8, firewire binding post 9, zero line binding post 10, electric pole 11, crosspiece 12, electric shock manikin 13, live wire 14, zero line 15, hi-line land plug 16, hi-line and land jack 17, step-down ring 18, simulation ground 19, the earth analog board 21.

Structure as described in Figure 1 as previously mentioned, repeat no more, only make certain supplementary notes herein, its cover plate 20 bottoms are cavity, if get an electric shock when demonstrating, electric shock manikin, electric pole, electric wire such as preceding method are installed demonstration, demonstration is finished, parts such as electric pole, manikin can be pulled down, open cover plate 20 and put into cavity under it, in order to depositing and carrying.

Electric shock manikin 13 as shown in Figure 2, the hand, the foot that wherein are surrounded by metal level constitute 4

contacts

30,35,36 and 38,36 of right hand contact 30 and left foot contacts are in series with bulb 31,37, be in series with

bulb

39,34 between left hand contact 38 and the right crus of

diaphragm contact

35,33 parallel connections of bulb 32 Homeway.com Chinese percussion instruments, be connected between bulb 31 and 37 tie point A and bulb 39 and the 34 tie point B, make can both constitute series arm between above-mentioned any two contacts, demonstration is used for getting an electric shock.

Fig. 3 represents the earth analog board structure, it can be made with copper-clad plate, step-down ring 18 and simulation ground 19 metal levels for conduction, step-down ring 18 is five concentric endless belt, resistance R therebetween is respectively 5 Ω, 4 Ω, 3 Ω, 2 Ω and 1 Ω from left to right, and resistance preferably is welded in below the analog board 21, also has electric pole jack 40, jack 17 and binding

post

9,10 on the analog board 21, its connection is above stated, repeats no more herein.

Electrical schematic diagram shown in Figure 4 is described as follows: the mid point of double-point double-throw switch 4 connects electric power incoming line, its right side, left side are connected respectively to induction coil 42 input ends and direct current (or interchange) power supply 41 input ends, two output terminals of induction coil 42 are connected respectively to binding

post

10,9, the zero output and the binding post 10 of direct current (or interchange) power supply 41 join, 12 volts of output plugs 7 of direct current (or interchange) power supply 41; Live wire 14, zero line 15 are connected respectively to binding

post

9,10, the other end of live wire 14 connects hi-line and

lands plug

16,18 on the step-down ring some resistance R that connect that collapse are connected in series, and one termination hi-line lands jack 18, and the other end connects simulation ground 19 and binding post 10.

This demonstration device can be demonstrated four kinds of electric shock phenomenons, and its method is as follows:

1, single line gets an electric shock

Electric pole 11 is inserted in the hole 40 of the earth analog board 21 both sides, the good live wire 14 of frame, zero line 15, plug 7 inserts in the jack 8, a pin station of electric shock manikin 13 contact live wire 14 with the hand of this pin homonymy to simulation ground 19,4 groups of double-point double-throw switchs are the perfectly straight stream of edge joint (or interchange) power supply 41 left, interior three bulbs of manikin 13 bodies that get an electric shock this moment are bright, the news Chinese percussion instrument pipes, and certain part of this human body contacts with ground, and the electric shock phenomenon that another part contacts with live wire is got an electric shock on single line.

2, two-wire gets an electric shock

Power supply wiring is the same, the pin of electric shock manikin 13 stepped on the insulating surfaces of the earth analog board 21, and a hand contact live wire 14, another hand contact zero line 15,

bulb

31,32,39 is bright in manikin 13 bodies that get an electric shock this moment, news Chinese percussion instrument 33 sounding.Thisly stand on the insulator part contact live wire of human body, another part contact zero line and the electric shock phenomenon that produces is got an electric shock two-wire when human body.

Above-mentioned two kinds are got an electric shock low pressure owing to human body contacts the electric shock phenomenon that produces with the low pressure electrified body.

3, the high pressure step voltage is got an electric shock

Power supply wiring is the same, the plug 16 of live wire 14 1 ends is inserted in the jack 17, represent that high pressure the end of a thread drops on the ground this moment, step-down ring 18 expression on the earth analog board 21 from 20 meters on the line of dropping with interior explosive area, when human electric shock's model 13 when outwards walk about in the nearer place of high pressure the end of a thread, step steps greatly more, bulb is 32,34,37 bright more in the body, news Chinese percussion instrument 33 tweeting sounds are big more, expression electric shock degree is heavy more, otherwise, the step that human electric shock's model 13 steps is more little, and lamp is dark more, illustrates that pressure drop is little safe more between bipod.

4, high-voltage arc gets an electric shock

Plug 7 is transferred to from jack 8, plug 16 is transferred to from jack 17, draw back certain distance, human electric shock's model 13 is stood on the simulation ground 19, hand reaches when the about 2 centimetres of left and right sides of live wire 14, and 4 groups on switch is connected (this induction coil 42 is J1206 type induction coils), the high pressure of induction coil 42 outputs more than 40,000 volts to the right and induction coil 42, this moment, human electric shock's model 13 hand contacts and 14 of live wires promptly produced the spark discharge phenomenon, promptly represented high-voltage arc electric shock phenomenon.

If any two of four

contacts

30,35,36,38 of human electric shock's model 13 tap into live wire 14 and other line 15 respectively, then can demonstrate the double gap electric discharge phenomena.

The advantage of this demonstration device is as follows:

1), can demonstrate intuitively four kinds of electric shock phenomenons such as the electric shock of low pressure single line, two-wire electric shock, the electric shock of high pressure step voltage, high-voltage arc electric shock, also can demonstrate the Electrical Safety operation task, in being, the desirable teaching aid of primary school safety utilization of electric power teaching, also can be used as the teaching aid of training electrician and whole people's safety utilization of electric power education.

2), demonstrating visual, should be readily appreciated that, the effect that can obtain getting twice the result with half the effort, the educatee is not limited by educational level, and is better to children, student's educational effect.

3), simple in structure, cost is low, easy-to-operate, instrument use 12 volts of low-voltage directs (or exchange) power supply, voltage security, when the demonstration high-voltage arc got an electric shock discharge, though voltage is raised to more than 40,000 volts, its power was little, current strength is low.

Claims

1, a kind of human electric shock's demonstration device that is used for safety utilization of electric power education, it comprises: demonstration box 1, power supply, electric pole 11, electric wire etc. is characterized in that it also comprises:

A, the earth analog board 21, it is installed in the demonstration box 1, left side of face is provided with several step-down rings 18 on it, the right of step-down ring 18 is provided with simulation ground 19, all collapse between adjacent two rings of described step-down ring 18 and be connected to resistance R, leftmost step-down ring and hi-line land jack 17 and are connected, and rightmost step-down ring is connected with zero line binding post 10 with simulation ground 19; Electric pole 11 is inserted into respectively in the jack 40 at the earth analog board 21 two ends, and crosspiece 12 two ends on two electric poles 11 haul live wire 14, zero line 15 respectively, and live wire 14, zero line 15 are connected respectively to binding post 9,10;

B, electric shock manikin 13, it is a plastic toy doll, and the hand of model, pin are surrounded by metal level and constitute 4 contacts, are connected with several bulb Homeway.com Chinese percussion instruments in the model body, and model places above the earth analog board 21 during demonstration;

C, described power supply include direct current (or interchange) power supply 41 and can produce the induction coil 42 of high pressure, and direct current (or interchange) power supply 41 and induction coil 42 all are installed on the earth analog board 21 bottoms, and both output terminals can be connected respectively to corresponding binding post 9,10.

2, demonstration device according to claim 1, it is characterized in that: 36 of the right hand contact 30 of described electric shock manikin 13 and left foot contacts are in series with bulb 31 and 37,35 of left hand contact 38 and right crus of diaphragm contacts are in series with bulb 39 and 34,33 parallel connections of bulb 32 Homeway.com Chinese percussion instruments are connected to bulb 31 and 37 tie point A and bulb 39 and 34 tie point B.

3, demonstration device according to claim 1, it is characterized in that the following connection of described power circuit: the mid point of double-point double-throw switch 4 connects electric power incoming line, its right side, left side are connected respectively to induction coil 42 input ends and direct current (or interchange) power supply 41 input ends, two output terminals of induction coil 42 are connected respectively to binding post 10,9, the zero output and the binding post 10 of direct current (or interchange) power supply 41 join, 12 volts of output plugs 7 of direct current (or interchange) power supply 41; Live wire 14, zero line 15 are connected respectively to binding post 9,10, the other end of live wire 14 connects hi-line and lands plug 16,18 on the step-down ring some resistance R that connect that collapse are connected in series, and one termination hi-line lands jack 17, and the other end connects simulation ground 19 and binding post 10.

4, according to claim 1 or 3 described demonstration devices, it is characterized in that: described the earth analog board 21 is provided with five concentric step-down rings 18, and the corresponding resistance R that connects that collapses is respectively 5 Ω, 4 Ω, 3 Ω, 2 Ω, 1 Ω from left to right.