CN201638445U

CN201638445U - Combustible gas fulmination and explosion limit demonstrating device

Info

Publication number: CN201638445U
Application number: CN201020166155XU
Authority: CN
Inventors: 曹广雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-13
Filing date: 2010-04-13
Publication date: 2010-11-17
Anticipated expiration: 2020-04-13

Abstract

A combustible gas fulmination and explosion limit demonstrating device relates to the technical field of experimental phenomenon demonstration. The demonstrating device is achieved through the technological measures as follows: the demonstrating device comprises an electric lighting button, a fulmination chamber and the like, and takes the shape of a gun; the fulmination chamber forms a gun barrel and is installed above a gun stock; a gas filling opening is formed on the rear side of a gun stock; the electric lighting button is arranged at the trigger below the gun stock; the fulmination chamber is made of transparent plastic and is provided with scale marks on the surface; one end of the fulmination chamber close to the gun stock is blocked by a rubber stopper; a movable piston is placed into the other end; the other end of the piston is connected with a gun body through a rubber band; a blow-out proof safety bolt pin is further arranged at one end of a muzzle of the fulmination chamber; and an ignition needle connected with the electric lighting button extends into the fulmination chamber. Compared with the prior art, the demonstrating device has the obvious advantages as follows: the demonstrating device can demonstrate gas fulmination phenomenon, also can measure the explosion limit of the combustible gas, and is an easily-improved chemical instrument capable of teaching by fun and developing student interests.

Description

Inflammable gas detonation and explosion limits demonstration device

Technical field

The utility model relates to the technical field of experimental phenomena demonstration, is specifically related to a kind of inflammable gas detonation demonstration instrument.

Background technology

Chemically, it is to collect the back with small test tube to block with thumb that preparation and the gas of collecting need be tested pure, common way, then near the spirit lamp check of firing, for bold teacher, be feasible, and for some timid academics and students, this operation is just relatively more difficult.Disclosed a kind of inflammable gas detonation rifle on 02 26th, 2003, notification number CN38036 though above-mentioned gas is tested pure the improvement, can't accomplish it all is that institute adds sample gas for the filling of gas, can't demonstrate its explosion limits for pure gas.

The utility model content

The purpose of this utility model be at above-mentioned can't accomplish all be add the deficiency of sample gas, a kind of inflammable gas detonation demonstration device is provided.

The purpose of this utility model realizes by following technological means: a kind of inflammable gas detonation and explosion limits demonstration device, form by electronic striking button and detonation chamber etc., make the shape of pistol, the detonation chamber forms gun barrel, and the detonation chamber is contained in the top of gun stock, and the gun stock rear side has the gas inlet, be used for injected gas, the deduction place, below of gun stock is provided with the electronic striking button, the detonation chamber be transparent plastics make and above scale mark is arranged, be convenient to observe gas volume; The detonation chamber is blocked with rubber stopper near an end of gun stock, and the other end is put into transportable piston, and the other end of piston is connected with the rifle body with bungee; It is too far away to fly out when preventing detonation; Also have at detonation chamber muzzle one end and to prevent deviating from the safety pin bolt, block piston when being used for injected gas; It is indoor that the igniting pin that the electronic striking button is connected puts in detonation.

Compared with prior art the utlity model has following tangible advantage: can demonstrate the detonation phenomenon of gas, also can carry out the measurement of the flammable gas explosion limit simultaneously, be a kind of easy improvement chemical apparatuses of teaching through lively activities, cultivating student's interest.

Description of drawings

Fig. 1 is a synoptic diagram of the present utility model

1. electronic striking buttons wherein, 2. gas inlet, 3. rubber stopper, 4. piston, 5. scale mark, 6. safe pin, 7. bungee, 8. detonation chamber.

Embodiment

Below in conjunction with description of drawings the utility model is described in further detail:

The detonation of this inflammable gas with the use of explosion limits demonstration device is: the igniting pin that electronic striking button 1 is connected puts in the detonation chamber 8, one side of detonation chamber 8 is used rubber stopper 3 beyond the Great Wall in advance, be fixed on above the gun stock, opposite side is filled in piston 4, and fasten bungee 7, safe pin 6 on the pin, the gas that to collect in advance with syringe is inserted through rubber stopper 3 by gas inlet 2, gas is sent into detonation chamber 8, after being ready to, safe pin 6 is turned on, pulled 1 igniting of electronic striking button, detonation takes place.

If the explosion limits of checking inflammable gas, after then connecting according to above-mentioned steps, the inflammable gas that only needs will collect in advance with syringe is inserted through rubber stopper 3 by gas inlet 2, gas is sent into detonation chamber 8, note the gas volume mark, the air of other certain mass mark reinjects, change the volume of inflammable gas and air, under the changing situation of the two volume fraction, pull 1 igniting of electronic striking button, find out the critical point that detonation takes place, be the explosion limits of inflammable gas.

In a word, the utility model provides a kind of inflammable gas detonation and explosion limits demonstration device.The above; it only is a part of embodiment of the present utility model; protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.

Claims

1. inflammable gas detonation and explosion limits demonstration device, form by electronic striking button and detonation chamber etc., the detonation chamber forms gun barrel, the detonation chamber is contained in the top of gun stock, the gun stock rear side has the gas inlet, the deduction place, below of gun stock is provided with the electronic striking button, it is characterized in that: detonation chamber (8) for transparent plastics and above scale mark (5) is arranged.

2. inflammable gas detonation according to claim 1 and explosion limits demonstration device, it is characterized in that: detonation chamber (8) are blocked with rubber stopper (3) near an end of gun stock, the other end is put into transportable piston (4), and the other end of piston (4) is connected with the rifle body with bungee.

3. inflammable gas detonation according to claim 1 and 2 and explosion limits demonstration device is characterized in that: also have at detonation chamber (8) muzzle one end and prevent deviating from safety pin bolt (6).

4. according to described arbitrary inflammable gas detonation of claim 1 to 3 and explosion limits demonstration device, it is characterized in that: it is indoor that the igniting pin that the electronic striking button is connected puts in detonation.