RU182030U1 - Well loading device - Google Patents

Abstract

The utility model relates to extractive industries. A folding sleeve contains an elastic shell filled with explosive (BB), a fastening strap, a shipping tape for packing four to five products together. It also has a sleeve, which is the supporting structure of the product and which also performs the function of a hand brake when the sleeve is extended in the well. The material for the manufacture of a sleeve sleeve is an environmentally friendly pressed paper that does not require recycling during and after charging explosive wells. For ease of use, the upper end of the elastic material of the sleeve is fixed on the sleeve to eliminate the possibility of descent after filling. It can be combined with a different elastic sleeve shell in the performance of both airtight, waterproofing, and not possess these properties. 2 ill.

Description

The utility model relates to the extractive industries and can be used by enterprises conducting drilling and blasting operations.

Known explosive cartridge (RU 92527, F42D 1/08, publ. 03/20/2010). The cartridge contains a fabric sleeve with a sealed lower end and placed with a hose attached to the charger of the charging machine. The sleeve is filled with an emulsion industrial explosive. The length of the sleeve is equal to the length of the column of the formed cartridge, the sleeve is made of a woven fabric by stitching its side sections along the length with fastening in the seam at regular intervals, with a size of at least four diameters of the sleeve of one or two pieces of braid, at least four diameters of the charging hose, and fixing the sleeve to the charging hose of the charging machine is done by pulling the braid into the girth of the charging hose of the charging machine.

A disadvantage of the known cartridge is that the condition of equal diameter of the sleeve to the diameter of the borehole, which eliminates the possibility of controlling the height of the column of explosives in the borehole and a given crushing of the blasting rock in the jamming zone, reduces the efficiency of the explosion

A well-known device for charging wells "Universal charging sleeve" (Eurasian patent 027549, F42D 1/08, publ. 08/31/2017). Universal charging sleeve, including an explosive charge placed in an elastic shell, detonators, circlip. In this case, the sleeve contains a cover connected to the retaining ring and two parts - bottomhole and charging, bottomhole has a diameter equal to the diameter of the borehole, and the charging part has sleeve limiters, and the diameter of the charging part is less than the diameter of the borehole and is determined for a given ratio Dp / Dc in the range from 0.564 to 0.9, where Dp is the diameter of the charging part of the sleeve; Dc is the diameter of the well.

The disadvantages of this prototype include:

- bulkiness and complexity of operation (in the case of charging a large number of wells);

- the complexity of disposing of the bottom-hole part of the product (at some enterprises they are manually cut and disposed of if they are not disposed of during the explosion, then parts of the products lead to dilution of the final product, that is, the quality of the manufactured product will be inappropriate);

- a high degree of probability of breakage of the charging part of the sleeve from the bottomhole, if the length of the product is less than the depth of the well.

A device for charging waterlogged wells (SU 737626, E21C 37/00, publ. 05.06.1980). The known device includes a cassette mounted on a stand, in which there is a waterproofing sleeve and a charging hose.

The sleeve for loading wells with explosive (BB) according to this known source contains an elastic shell to be lowered into the well, muffled from one end and secured by the other end to a sleeve in the form of a sleeve to be placed at the wellhead and made with a longitudinal hole for passing the charging hose into cavity cavity.

This decision was made as a prototype for the claimed object.

The disadvantage of this solution is that the sleeve is assembled directly at the location of the well and requires time to fix the support system, attach the sleeve to it, and the shell to the sleeve (the shell is wound onto the sleeve and bandaged to fix it). After that, the shell is lowered into the well and the explosive solution is supplied through the charging hose passed into the shell. When the explosive solution is supplied, it falls to the bottom of the shell, filling it, leading to the expansion of the shell and its support on the wall of the well. In reality, when using this solution, the following problems arise. Firstly, the shell is made to fit the well, which when filling the shell can cause it to burst to a portion of the wall height, preventing the shell from falling to the bottom of the well and stretching out completely. With this design, the transverse dimension of the shell during filling can be damaged on sharp protrusions of the soil on the wall of the well, which will lead to the leakage of explosives through the gap. Due to poor-quality fastening of the shell on the liner, the latter can jump off the liner under the weight of the solution.

This useful model is aimed at achieving a technical result, which consists in increasing the reliability of fastening the shell on the liner and ensuring its retarded sliding from the liner into the well cavity under a gradually increasing weight of the filled solution.

The specified technical result is achieved in that in a folding combined sleeve for loading wells with explosive containing a shell to be lowered into the well, muffled from one end and secured by the other end to a sleeve in the form of a sleeve to be placed at the wellhead and made with a longitudinal hole for transmission charging hose into the cavity of the shell, the shell is made of elastic material, the sleeve in the form of a sleeve is made of environmentally friendly pressed paper and elongated to accommodate on its outer surface of the shell stretched and folded into an accordion and providing the braking function during expansion of the shell during its filling with explosive, a fastener in the form of a flexible rod is attached to the upper part of the sleeve for attaching the sleeve in the form of a sleeve in the form of a sleeve to the cleaning structure explosive feed hose

These features are significant and are interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

The present utility model is illustrated by a specific example of execution, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result.

In FIG. 1 shows the design of a collapsible sleeve for loading wells with explosives placed in a well;

FIG. 2 - position in the accordion of the shell on a paper sleeve.

According to this utility model, a new sleeve design is proposed, which arrives at the place of laying in the well 1 in assembled form, that is, it is made folding. The proposed design (Fig. 1) of a folding sleeve (hereinafter referred to as the sleeve) includes a sleeve 2, an elastic shell 3, a fastener 4 in the form of a flexible rod (webbing fastener). The original sleeve assembly does not include bulky expensive parts and allows the product to keep a given shape, eliminating the possibility of self-expansion.

The sleeve 2 serves as the supporting structure of the charge. The elastic material of the sleeve and the fastener 4 are assembled and fastened on it. It also performs the function of a hand brake when the sleeve is extended in the well while the charging hose 5 of the mixing-charging machine passes through it. The material for producing the liner is environmentally friendly pressed paper, which does not require recycling during and after charging explosive wells.

The elastic sleeve 3 of the sleeve is made in various designs. It can be either airtight, waterproofing, or not possess these properties. One of the main properties of the material is elasticity, i.e. elongation, flexibility, elasticity. Various versions of woven and non-woven shells are used (with and without various additives): polypropylene, polyethylene, fabric and other similar materials. Therefore, the sleeve can be used both in waterlogged and dry conditions, used to load both waterproof emulsion explosives (or other similar types of water-containing explosives) and various types of bulk explosives. Depending on the application conditions, the degree of water cut in the wells, the sleeve can be made of various types of fabrics with both waterproofing and non-hydrophobic properties, which significantly affects the cost of finished products.

In addition, for ease of operation, the upper end of the elastic material of the sleeve is fixed on the sleeve 2, to exclude the possibility of descent after filling.

The fastener 4 (webbing-fastener) is the upper element of the sleeve, fixed through the inner hole of the sleeve 2 and acting as a product lock on the device 6 for cleaning the charging hose of the mixing and charging machine (or other convenient device). The main purpose of this element 4 is ease of use and the exclusion of the possibility of failure of the sleeve into the well during explosive charging. An element 4 is made of twine, tape ropes and other similar products. The length of the webbing fastener is made according to the specified requirements, and if necessary, can be independently adjusted.

The original assembly of the sleeve is carried out in the following way: the elastic shell is drawn through the sleeve of the product and turned outward by the material, then fixed to the sleeve. Next, the elastic sheath is pulled onto the sleeve of the sleeve by the outer side of the material. After, the end of the elastic sheath is tied in a certain way (inner side) and fixed in the sleeve. On the sleeve, the shell is in accordion state. The sleeve thus assembled does not include bulky expensive parts, allows the product to keep a given shape, excluding the possibility of self-expansion (Fig. 2).

At the request of the consumer, the sleeve can be made of various diameters, lengths and combinations of materials.

The sleeve arrives at the place of installation in assembled form, that is, the shell is assembled in an accordion on the sleeve 2 (Fig. 2). A feature of such an assembly is ease of use, a detonator-checker 7 is placed in the cavity of the sleeve and the power or ignition cord 8 is brought out.

The assembly is suspended by a flexible rod or flexible rods to the device 6 for cleaning the charging hose of the mixing and charging machine and lowered to the wellhead or held above this mouth. Next, pass the charging hose 5 through the hole of the sleeve and begin to supply a solution of explosives. As the weight increases, the shell begins to sink, straightening the accordion folds in turn. Since the shell is elastic, it begins to stretch towards the bottom of the well, while its outer transverse dimension decreases, which allows the shell to be recessed into the cavity of the well without contact with the wall of the latter. The straightening of the accordion occurs gradually, since high friction is created between the outer surface of the paper sleeve and the wall of the shell due to the use of pressed paper as a material and the elastic tension of the shell. Therefore, the straightening of each fold occurs at the moment of reaching the supplied volume of the next portion of the explosive solution into the cavity of the shell, the weight of which is greater than the adhesion force between the material of the shell and the sleeve. When the bottom of the well is reached, the extension along the length ceases and thickening of the sheath along the transverse dimension begins until it stops against the wall of the well (sheath fixation mode in the well).

This example of straightening the shell is not the only one. Examples of straightening the harmonica of the shell are possible before the start of the solution supply. These modes are determined by varying degrees of adhesion between the material of the shell and sleeve.

The formation of a charge column in a well using a sleeve can be carried out in several ways:

- due to the mass of the checker-detonator 7, which is placed inside the shell and under its own weight lowers and straightens the sleeve in the well. Next, the charging hose of the mixing-charging machine through the neck of the sleeve is immersed to the desired depth and the required amount of charge is supplied. After charging the well, the upper part of the sleeve is left on the surface, securing it with improvised materials, or left in the well itself.

- due to the mass of loaded explosives. Previously, the detonator block is lowered to the desired depth of the well. The charging hose through the throat of the sleeve is immersed in the sleeve, the sleeve is secured with a fastening strap on the cleaning device of the charging hose of the mixing and charging machine (or other convenient device) and a small amount of explosive is supplied. The sleeve will begin to straighten down the well. Next, the charging hose is immersed to the desired depth and the required amount of charge is applied. After charging the well, the upper part of the sleeve is left on the surface, securing it with improvised materials, or left in the well itself.

- due to immersion of the charging hose of the mixing and charging machine in the well with the sleeve. Previously, the detonator block is lowered to the desired depth of the well. Then, the charging hose through the neck of the sleeve is immersed in the sleeve, the sleeve is fixed with the fastening strap on the cleaning device of the charging hose of the mixing and charging machine (or other convenient device), and the specialist in maintenance of the mixing and charging machine can hold it in his hands and guide control over the spreading in the well. Next, the charging hose is immersed to the desired depth and the required amount of charge is applied. After charging the well, the upper part of the sleeve is left on the surface, securing it with improvised materials, or left in the well itself.

The length of the sleeve in the well is assumed to be greater than the height of the explosive charge column and may be greater than the depth of the well (at the request of the customer). In addition, for the purpose of requirements and ease of operation, the upper end of the waterproofing sleeve is fixed on the sleeve, to exclude the possibility of descent after filling.

Claims (1)

Device for loading wells with explosive, containing a shell to be lowered into the well, plugged at one end and secured by the other end to a sleeve in the form of a sleeve made with the possibility of installing it at the wellhead and made with a longitudinal hole for passing the charging hose into the shell cavity, characterized the fact that the shell is made of elastic material, the sleeve in the form of a sleeve is made of environmentally friendly pressed paper to be stretched and folded on its outer surface a second accordion shell and providing the shell with braking function-expansion during its filling with explosive, wherein the upper portion of the liner attachment member attached to a flexible rod for attachment in the suspension state of the sleeve in the wellhead.

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