RU2327622C1 - Process transport container for explosives - Google Patents

Abstract

FIELD: transportation of explosives.

SUBSTANCE: process transport container for explosives includes reservoir in shape of metal cell with filling and discharging units. Container is made in shape of vertical cylindrical case with elliptical cover and cone bottom, protective box for pipes, at that container is made of aluminum with flow limit no more than 155 MPa. Relation of reservoir walls thickness to inner diameter of cylindrical part is 0.003...0.004, angle of cone bottom is about 90 degrees. Attaching points of protective box are located on cylindrical case.

EFFECT: improving of container explosion safety.

1 dwg

Description

The invention relates to the field of storage and transportation of explosives (BB).

Known container for transporting, storing and mixing explosives. It is made in the form of a rigid rectangular metal case made of stainless steel, on top of which there is a loading hatch, and on the side there is a discharge opening with a hermetically sealed lid. The side and rear walls of the container have knockout elements (membranes). The total surface of polypropylene membranes is up to 40% of the entire surface of the apparatus (Theory and practice of explosion safety of energy-intensive materials. "/ Under the general editorship of GA Nishpal - M .: CEI Khimmash, 2002. - 140 p., P. 83-84.). This container is closest to the invention and is selected as a prototype.

A disadvantage of the known container is that it cannot be used for liquid cargo, a significant part of the walls is made of fragile polypropylene, and in case of an unauthorized explosion, the blast wave propagates to the sides, exacerbating destruction, and the contents are scattered over a considerable area.

The technical result that can be obtained using the claimed invention is to increase the explosion safety of the container.

To solve this problem, a transport and technological container for explosives is proposed, which includes a container in the form of a metal vessel with filling and emptying units, while the vessel is made in the form of a vertical cylindrical body with an elliptical cover and a conical bottom, a protective basket of pipes, the container is made of aluminum with a yield strength of not more than 155 MPa, the ratio of the wall thickness of the tank to the inner diameter of the cylindrical part is 0.003 ... 0.004, the angle of the bottom cone is about 90 degrees, and the mounting space protective basket disposed on said housing.

The invention is illustrated in the drawing.

The container consists of a container 1 in the form of a vertical cylindrical vessel with a conical bottom 2 having an angle at the apex of 90 °, and an elliptical cover 3, a hatch 4, a basket (frame) 5 and an unloading device 6.

The container capacity is welded, made of aluminum with a yield strength of not more than 155 MPa.

Basket 5 is a supporting and protective. It has vertical racks and pipe rings uniting them. Vertical racks mounted on a cylindrical body.

The operation of the container is as follows.

After loading liquid explosives, the hatch closes, the container is sealed and loaded into the vehicle. After delivery to the place of unloading, the container is emptied, washed and sent for further use.

During transportation, as well as in other technological operations, an unauthorized situation (for example, a fire or even an explosion) may occur inside the container, accompanied by an increase in pressure and a possible transition of combustion to detonation.

In this case, an emergency depressurization of the container occurs by the breakdown (destruction) of the elliptical lid, since it is the least durable element in the container structure - the cylindrical and conical parts of the container due to their shape and the presence of container nodes adjacent to them have greater rigidity and strength.

In this case, the pressure wave goes up, and not sideways, as in the prototype, without causing much damage to the enclosing structures. Thus, the discharge zone is localized above the container, thereby reducing the spatter of the liquid explosive on the sides. Depressurization and pressure drop impede the transition of combustion to detonation (explosion). The ellipse of the lid and the taper of the bottom with an angle of about 90 ° contribute to the formation of an upward wave, and the design of the container made of relatively soft aluminum with a yield strength of not more than 155 MPa smooths out pressure drops inside the vessel. When the ratio of the thickness of the walls of the tank to the inner diameter of the cylindrical part is less than 0.003, the capacity is not strong enough, the fracture zone is unpredictable, and if the ratio is more than 0.004, the design of the tank in terms of strength characteristics is technically and economically redundant.

The use of a container of precisely this form and design is most appropriate for liquid explosives, especially those containing aluminum.

The presence of a protective basket increases the safety of the container in handling operations.

Claims (1)

Transport and technological container for explosives, including a container in the form of a metal vessel with filling and emptying units, characterized in that the vessel is made in the form of a vertical cylindrical body with an elliptical cover and a conical bottom, a protective basket of pipes, while the container is made of aluminum with a yield strength of not more than 155 MPa, the ratio of the vessel wall thickness to the inner diameter of the cylindrical part is 0.003 ... 0.004, the angle of the bottom cone is about 90 °, and the attachment points are shield baskets are located on a cylindrical body.