CN2045721U

CN2045721U - Automatic gas-filling life unit in water

Info

Publication number: CN2045721U
Application number: CN 88208825
Authority: CN
Inventors: 黄强
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-07-20
Filing date: 1988-07-20
Publication date: 1989-10-11

Abstract

The utility model discloses an automatic gas filling life saving unit in water and belongs to an improvement of an existing automatic life saving unit. The utility model uses hollow and sealed flexible material as a component waiting for being filled with gas. The component is connected with a gas generating device. When the automatic gas filling life saving unit in water is carried and the carrier falls into water, the gas generating device generates gas quickly to make the component waiting for being filled with gas (for example, a life saving ring, a life saving raft, etc) be filled with gas. The person or object fallen in water is caused to obtain the floating force to be out of danger or to be salvaged easily. The automatic gas filling life saving unit in water overcomes the disadvantages of high product cost, heavy quality, high price and inconvenience because of repeated use of the existing similar product.

Description

Automatic gas-filling life unit in water

The invention belongs to the improvement of existing automatic inflatable lifesaving device.

Existing automatic lifesaving device is to ignite squib when meeting water by the water trigger switch, and squib is blown the gas cylinder mouth of contain high pressure gas, gas in the high-pressure gas bottle is charged into treat in the gas filed object.Its cost height, volume is big, quality is heavy, repeated usage inconvenience, and price is high and can not get generally using on market.

The present invention has overcome above deficiency.Its volume is little, and light weight is easy to carry, and cost is low, and repeated usage is also convenient, generally is applicable to the floating of air-dropped material of flood disaster prevention and reduction, and operating personnel's lifesaving, salvage also have civilian tourist industry etc. on marine, the river.

Invention main points: be to utilize calcium carbide to contact the chemical reaction that produces acetylene gas with water, or it is mixed by a certain percentage with sodium bicarbonate and aluminium choride (or aluminium sulphate), by water is two hydrolysis reaction generation carbon dioxides of medium, and the gas importing is treated in the gas filed object, and utilize the non-return muzzle not make the outside of escape of gas to the object to be inflatable body, utilize the water inlet muzzle on the water inlet tap not make the outside of escape of gas again to gas generator and object to be inflatable body.And flooding quantity is controlled because of increasing of housing internal gas pressure.Like this, when the present invention fell into water with people or object, a certain amount of water entered housing by water inlet tap, react with the medicine of the inside and produce gas, the unidirectional again importing of gas treats in the gas filed object that the water inlet muzzle has stoped escape of gas to extraneous, has also stoped entering of unnecessary water simultaneously.

Structure as shown in Figure 1.The assembling scheme drawing of buoy quoit and gas generator.

Fig. 2 is the gas generator constructional drawing.Water inlet is chewed and is closely put into water on (1) and chew cover (9), screw-in housing (3), and prevent that by seal ring (2) gas from escaping from seam.The compound that is used to place calcium carbide or sodium bicarbonate and aluminium choride (or aluminium sulphate) in the middle of the housing, there are two inlet suction ports (5) at housing two, non-return mouth (6) is arranged in the middle of the inlet suction port, to guarantee that gas unidirectional imports buoy quoit (10), have seal ring (4) to be connected between inlet suction port and the housing, the outside is linked by collar nut (7).

Water inlet tap can be made with nylon or plastics.Water inlet tap hollow, two communicates, and close-connected water inlet muzzle (9) can be made of rubber on an end that screws in housing, and method is to press partially with the thin-walled India rubber tube (thickness is between 0.3mm～0.6mm) that a section hollow, two communicate, and makes and does not leave the space.The last lower wall that the one end is being closed is set to that water inlet tap screws on the end of housing blended rubber water or other method closely links to live after separately.

The non-return mouth can be made with nylon or plastics, non-return muzzle (8) can be made of rubber, method is with one section circular hollow, the heavy wall India rubber tube (thickness is between 1mm～1.5mm) that open the sealing other end, on wall, vertically scratching tube wall (long 10mm) near the first end of sealing, and the end of will ventilate is set on the non-return mouth blended rubber water or other method, and closely binding is firmly.

Housing, collar nut, inlet suction port all can be made of plastics or nylon.

Add a stopper (11) in water inlet tap upper end, be used to select inflation opportunity.That is:, carry the present invention when in water, needing buoyancy in the active procedure with stopper beyond the Great Wall, stopper is pulled out to begin inflation.

The salvaging that is used for drowning article is floated, because of object only need float, and it is not high to floating required rate request, and the object submerged is up to the bottom, having enough hydraulic pressure that hydraulic pressure is gone into housing like this makes and the medicine generated reactive gas, it produces the size of buoyancy and the quantitative relationship between the required drug quality, sees Table (1), and reference was selected for use when the sacrificial vessel system was done.Vome of shell is a minimum can load two times of medicine volume.Annotate: because in the variation range of Celsius temperature between 0 ℃ to 30 ℃ the absolute temperature order of magnitude is not had influence, so the difference of water temperature is little to the variable effect of the medicine generation gas volume size of same quality, reliability is unaffected.The pressure that causes of the depth difference of water again, with atmospheric pressure by comparison, the depth of water differs an order of magnitude at 5 meters with interior, because the object self that falls into water also has certain buoyancy, so the influence that hydraulic pressure causes does not destroy reliability yet.

Be used to rescue the people, because of human body proportion approaches the proportion of water, the people just falls into water the degree of depth can be too not dark.And the housing flooding quantity is mainly gone into housing by the size of vome of shell and the inside and outside pressure difference of housing that water depth causes with hydraulic pressure, therefore choosing of vome of shell is wanted strict, makes absolute reliability.Gas generator of the present invention is partly lain in the waist border, and then gas generator underwater penetration when the people falls into water is not less than 0.3 meter.Fall into water the degree of depth, vome of shell, drug quality, flooding quantity, produce gas and several groups of quantitative relationships between the buoyancy size that obtains see Table 2, the sacrificial vessel system as the time choose.Embodiment:, obtain 20 kilograms of buoyancy, then vome of shell: π * (inside radius) with the 0.3 meter calculating of degree of depth minimum of falling into water ²* length is π * 4 ²* 20(unit: Cm ³), need calcium carbide 30(g).Because of wanting fast to producing the buoyancy rate request, so with the reaction of calcium carbide and water, and should not use pair hydrolysis reaction.

The embodiment that is used for the salvage article is: with 20 kilograms of buoyancy calculation of need, vome of shell is length * π * (radius) ²Be 10 * π * 3 ²(unit: Cm ³), need aluminium choride

43(g), sodium bicarbonate 80(g).

The theoretical foundation of the acquisition of table 2 data is: establishing the volume that housing puts into behind the medicine is V(rice ³), the pressure of the inside air is not 1 standard atmosphere P when intaking ₀With the water tightness is 10(kilogram/rice) calculate, then advance V ₀(rice ³) quality of water is 10 * V ₀(kilogram).If gas generator part underwater penetration of the present invention is h(rice), then the pressure that causes of this depth of water is hdg, and d is the density of water, and g is an acceleration due to gravity, and formula is then arranged:

P ₀·V＝（P ₀＋h·d·g）（V－V ₀）

Thus: V ₀=(hdgV)/(P ₀+ hdg)

P ₀=101325 Ns/rice, hdg this and P ₀Relatively can omit, so:

V ₀≈ (hdgV)/(P ₀) as seen, the water inlet volume is directly proportional with Vh.

Table (1)

Buoyancy (kilogram)	5	6	7	8	9	10	15	20	30
										Aluminium choride (gram)	11	13	15	17	19	21	32	43	64
Sodium bicarbonate (gram)	20	24	28	32	36	40	60	80	120

Table (2)

Vome of shell (liter)	During 0.3 meter of underwater penetration	0.27	0.32	0.38	0.42	0.48	0.54	0.81	1.08	1.62
											During 1.0 meters of underwater penetrations	0.086	0.10	0.12	0.14	0.15	0.17	0.26	0.34	0.51
	Need calcium carbide (gram)		7.6	9.1	10.6	12.1	13.6	15.1	22.7	30.2											45.3
Flooding quantity (gram)											13.5	16.2	18.8	21.5	24.2	26.9	40.4	53.8	70.7
		Produce buoyancy (kilogram)		5	6	7	8	9	10	15										20	30

Accompanying drawing 1, the assembling scheme drawing of gas generator and buoy quoit.

Accompanying drawing 2, the gas generator constructional drawing.

Description of drawings:

(1) water inlet tap; (7) collar nut;

(2) seal ring; (8) non-return muzzle;

(3) housing; (9) water inlet muzzle;

(4) seal ring; (10) buoy quoit;

(5) inlet suction port; (11) stopper;

(6) non-return mouth;

Claims

The automatic inflatable lifesaving device of a kind of chance water.It is characterized in that treating that gas filed hollow object (10) back seal connects a gas generating unit, gas generating unit is chewed (1) by water inlet, and housing (medicine storehouse) (3), inlet suction port (5), non-return mouth (6), collar nut (7), seal ring (2,4), stopper (11) are formed.