DE2055093C3 - Method and device for conveying liquid explosives - Google Patents

Description

(Λ, + h ₂ ) ■ γΗ ₂ Ο> hi-γεχ

20th

is sufficient, where h \ + Zj _{2 is} the height of the water column, h _{3 is} the height of the injector, yH ₂ O is the density of the water and y & is the density of the explosive liquid.

2. The method according to claim I, characterized in that that before the start and after the end of the conveyance of explosives, water via the connecting line flows between the water layer and the injector through the hydrostatic pressure of the water layer to the injector.

3. The method according to claim 1 or 2, characterized in that to interrupt the Promotion of the emulsion of the explosives in water through a water column in the valve Connection line between the water layer and the injector periodically opened and closed will.

4. Apparatus for performing the method according to claim 1 to 3 with an injector with a pressure line for water and with a container for an explosive layer and a overlying the water layer is connected to a device for controlling the Promotion of explosives, characterized in that the device for controlling the promotion of the explosives from a layer of water in the container (1) connecting to the injector (5) Valve (3) containing line (4) and a line (2) for supplying the explosives to the injector exists, and that the injector with respect to the height of the water and the explosive layer such is arranged that the explosive material is given to him by the hydrostatic pressure when the valve (3) is closed and with the valve (3) open, water flows in.

5. Apparatus according to claim 4, characterized by a bypass (10).

6. Apparatus according to claim 4 or 5, characterized by a device known per se (12) to keep the water level constant and a safety overflow (13).

The invention relates to a method for conveying liquid explosives in the form of an emulsion in Water with the help of an injector, with the liquid located in a container under a layer of water Explosives under the injector arranged above the layer of explosives outside the container Control of the promotion of the explosives are supplied, as well as a device for carrying out the Procedure.

Such a method and a device are known from AT-PS 2 73 766, advertising? can he Injector at the level of the water zone about 10 to 15 cm above the maximum level of the explosive layer be arranged so as a result of a communicating connection between the injector and a Suction line when the system is at a standstill, the injector is always filled with water. Here the hydrostatic pressure is only used to keep the injector at a standstill with water to fill. For normal delivery, however, the arrangement of the injector is irrelevant, as the expiosive substance is promoted by the suction of the injector. Without the suction effect of the injector, the Do not use the lifting action of the suction line. When the suction line is initially filled with water and you If the suction mouth is immersed in the explosive by lowering the suction line, the injector must first be restarted suck, d. H. Apply an increased suction force so that the specifically heavier explosive oil reaches the highest point the suction line can overcome. The one involved in this change in pumping from water to explosive oil The resulting negative pressure leads to gas bubbles and these in turn are the cause of explosions.

Besides, it's dangerous. Parts like the suction line move in an explosive.

The object of the present invention is to provide a method and a device of the type mentioned at the beginning Kind of creating, with moving parts in the liquid explosive as well as the danger of Explosions is avoided.

This object is achieved in that the control of the promotion of Expk livstoffe via a Connection line between the explosive layer and the injector by closing a valve in one Connection line between the water layer and the injector is effected and that the height of the Water layer and the arrangement of the injector of the condition

(Λι + h ₂ ) ■ yH ₂ O> A ₃ y _E ,

is sufficient, where h \ and Zi ₂ mean the height of the water column, / ij the height of the position of the injector, yH ₂ O the density of the water and γε the density of the explosive liquid.

This procedure is expediently carried out with a Device with an injector, with a pressure line for water and with a container for an explosive layer and an overlying water layer is connected, as well as with a device carried out for controlling the promotion of explosives, characterized in that the device to control the conveyance of the explosives from a the water layer of the container with the injector connecting line containing a valve and a line for supplying the explosives to the injector consists, and that the injector is arranged with respect to the height of the water and explosive layer. that by the hydrostatic pressure with the valve closed the explosive and with water flows into the open valve.

In this way it is achieved that the inflow of the liquid explosive to the injector only through the

static pressure of the water column on the liquid explosive is achieved, controlling the Promotion happens through shut-off devices that do not come into contact with the explosives.

Further refinements of the invention can be found in the subclaims.

In the figure, an embodiment of a device according to the invention is shown. Explosive liquid and water are together in a container 1, the water layer 15 being the preferably one to two times the layer of explosive material 14 should be covered. Control valve 9 and regulator 12 keep the water level in the container 1 under an overflow 13 constant. By suitable arrangement an injector 5 can through the line 2 with the valve 3 closed due to the hydrostatic Pressurized explosive flow to injector 5. According to the drawing, this arrangement must meet the condition:

(h, + A ₂ ) · JH ₂ O> h ₃ ya _m

are sufficient, where h \ and A ₂ mean the height of the water column, Λ3 the height of the position of the injector, yH ₂ O the true density of the water and y & the true density of the explosive liquid. When the valve 3 is open, water flows through a line 4 to pre- and post-rinse the transport line 6 and to interrupt the emulsion column 1 is greater than the pressure of the explosive liquid in pipe 2 at the junction of lines 2 and 4 when valve 3 is open. The condition for these pressure ratios is:

(Λ, + hi) ■ yH ₂ O - h ₂ - _YE ,> h, ■ yH ₂ O

When the system is started up, valve 8 is opened and the water passes through line 7 to the Injector 5. The valve 3 remains in the rest position, i. H. opened. This causes water to flow through line 4 the suction side of the injector 5, and the transport line 6 is thus pre-flushed. By closing the Valve 3 inevitably flows to injector 5 via line 2. Periodic opening and Closing the valve 3 causes the emulsion column to pass through a column of water at desired intervals is interrupted.

After completion of the transport process, valve 3 is returned to the rest position (open) and the Transport line 6 sufficient I: .- .. flushed. To valve S is closed if the post-purge time is sufficient. To ventilate the transport line 6 and a To prevent water from being siphoned off from the container 1, valve 9 is opened. As an additional Security against being lifted off in the event of a transport route with a steep incline and failure of the valve 9, a bypass 10 is provided with an aperture through which during the promotion of the System water flows into the container 1, but the ventilation of the transport line 6 is concerned when it comes to a standstill.

1 sheet of drawings

Claims (1)

Patent claims: 1. Process for conveying liquid explosives in the form of an emulsion in water with the help of an injector, which is placed in a container under a layer of water located liquid explosives to that above the layer of explosives outside The injector arranged in the container is supplied under control of the conveyance of the explosives are characterized in that the control of the promotion of the explosives over a connecting line between the explosive layer and the injector by closing one Valve is effected in a connecting line between the water layer and the injector and that the height of the water layer and the arrangement of the injector of the condition