RU188700U1 - SLEEVE FOR DISTRIBUTION OF WELLS CHARGES - Google Patents

Abstract

The utility model relates to the mining industry, in particular to hoses for dispersing borehole charges, is designed to create air gaps in borehole charges, create an air gap between borehole charge and stemming, as well as prevent erosion / spreading of the charge column, while allowing both manual and and mechanized loading of explosive wells. The shell contains longitudinal stiffening ribs in the form of symmetrical convex and concave folds, with the cargo pocket formed by piercing the lower part of the shell with a slot in the side, and the ring in the funnel neck is non-metallic. 1 hp f-ly, 2 ill.

Description

The utility model relates to the mining industry, in particular to hoses for dispersing borehole charges, is designed to create air gaps in borehole charges, create an air gap between borehole charge and stemming, as well as prevent erosion / spreading of the charge column, while allowing both manual and and mechanized loading of explosive wells.

Known insulating sleeve (UA patent No. 46549, 05/15/2002), made with a plugged bottom part, filled with water or a water solution of a surfactant. The upper part of the sleeve in the area of the wellhead is performed with a changing cross section, which increases to the wellhead.

The disadvantage of this device is the difficulty in manufacturing and the possibility of twisting the sleeve when it is filled with explosives.

Known assembled charging sleeve (RF patent No. 96945, 08/20/2010), placed in a conical shell. One end of the sleeve is sealed, for example, tied in the "chub" and is located on the side of the slots of the shell, and the other end is placed funnel for the charging hose).

The disadvantage of this device is the possibility of collapse of the explosive well when installed in the well and the possibility of twisting the sleeve when it is filled with an explosive.

Known sleeve (RF patent №2232372, 07/10/2004), made with a diameter greater than the diameter of the well, the lower end of which is sealed and provided with a load for immersing the lower end to the bottom, and its upper end is flattened on the upper cut of the pipe section and, covering it, clamped through the sealing gasket cover through clips.

The disadvantage of this device is the possibility of collapse of the explosive well when installed in the well and the possibility of twisting the sleeve when it is filled with an explosive.

A polypropylene sleeve is known for dispersing borehole charges (http://sibproekt19.ru/), which is a cross-linked product consisting of a metal ring, a polypropylene funnel, a polypropylene sleeve.

The disadvantages of this device is the presence of metal in the structure and the possibility of twisting the sleeve when it is filled with an explosive.

There is a method of stacking sleeves and a device for placing an explosive in a well (RF patent No. 2317518, publ. 20.02.2008, Bull. No. 5). The method of stacking sleeves for placing an explosive in a downhole well includes picking up and fixing the open end on the hollow guide of the main sleeve and fixing on the said hollow guide an additional sleeve made of an unpressurized material of greater strength. At the same time it is placed in the main sleeve with the possibility of their simultaneous descent. A device for placing an explosive in a sleeve in a descending well contains a hollow guide mounted on it with the possibility of a descent and assembled in the package main sleeve with a closed end and a means of braking. It contains a loading element mounted above the hollow guide, the means of braking is located in the upper part of the hollow guide, on which an additional sleeve is assembled in a package, covering the main and made of an unsealed material of greater strength. In this case, one end of the additional sleeve is passed through the brake device and is fixed on the loading element, and the other is closed.

The disadvantages of this device is the presence of metal in the structure and the possibility of twisting the sleeve when it is filled with an explosive.

A device is known for fastening a polymer sleeve at the wellhead (RF patent No. 122438, publ. 27.11.2012, bull. No. 33), which consists of a rigid funnel made of plastic; conical stopper with latch made of plastic mass; polymer sleeve. Polymer sleeve is passed from the inside through a funnel and a conical stopper; at the same time, the sleeve is turned out 10-15 cm from the conical stopper, tucked into the hole of the funnel and snap into place. The funnel is made with a diameter greater than the diameter of the well; the conical stopper is made with a diameter equal to the diameter of the inner hole of the funnel and 15-30 mm less than the diameter of the sleeve; at the same time, the polymer sleeve is folded “accordion”, laid inside the funnel.

The disadvantages of this device is the presence of a rigid funnel of plastic in the design and the possibility of twisting the sleeve when it is filled with an explosive.

Known polypropylene sleeve for dispersing borehole charges, pleasant for the prototype (RF patent №124784, publ. 10.02.2013, bull. №4), characterized by the fact that it is a cross-linked product consisting of a metal ring placed in the neck of a polypropylene funnel, passing in polypropylene sheath, ending in a cargo pocket, made by bending diagonally the bottom of the polypropylene sheath. The sleeve, characterized also by the fact that the cargo pocket is stitched with a single-line chain seam, that it is made of whole-woven fabric, that the polypropylene funnel is made of solid-woven polypropylene sheath, that the metal ring is made of 4 mm steel wire, the outer diameter of the metal ring the diameter of the polypropylene funnel is smaller than 4-5 mm, which is sewn into the metal ring of the polypropylene funnel.

The disadvantages of this device is the possibility of collapse of explosive wells during descent and the possibility of twisting the sleeve when it is filled with an explosive.

The technical result of the utility model is to reduce the likelihood of wellbore collapse during descent and to avoid twisting the sleeve when it is filled with an explosive.

The technical result is achieved by the fact that in the sleeve for dispersing borehole charges, including a ring sewn into the neck of the funnel, passing into the shell, ending with a load pocket, according to the invention, the shell contains longitudinal stiffening ribs in the form of symmetrical convex and concave folds, and the load pocket formed by flashing the lower part of the shell with a slot in the side, and the ring in the neck of the funnel is non-metallic.

The technical result is also achieved by the fact that the outer sides of the sleeve are fixed with adhesive tape.

The utility model is illustrated by drawings, where in FIG. 1 shows a longitudinal vertical section of the sleeve; in fig. 2 shows a cross-section along the sleeve, where:

1 - shell;

2 - funnel neck;

3 - ring of non-metallic material sewn into the neck of the funnel;

4 - seam connecting the neck of the funnel 2 and the shell 1;

5 - cargo pocket in the lower part of the shell 1;

6 - a slot in the side of the shell 1;

7 - firmware in the lower part of the shell 1 to form a pocket 5;

8 - longitudinal ribs made in the types of concave folds of the shell 1;

9 - longitudinal ribs made in the form of convex folds of the shell 1.

The sleeve is a stitched or welded product consisting of a nonmetallic ring 3, a neck of a funnel 2, a shell 1. A shell 1 and a neck of a funnel 2 are stitched with a seam 4. In the lower part of the shell 1 with the help of firmware 7 a pocket for cargo 5 with a slot 6 in the side is formed parts of the shell 1. The shell 1 is made with longitudinal ribs in the form of concave 8 and convex 9 folds. To further hold the longitudinal ribs in the form of convex 9 and concave folds 8 sheath 1 on the outside can be secured with tape, for example paper. To increase the rigidity of the ribs, they can be additionally reinforced with firmware (conventionally not shown) in the place of inflection of each concave fold 8 and each convex fold 9. The thickness of the stitching is selected by experimental, experimental-analytical or analytical methods.

Ring 3 of non-metallic material can be made of wood, bamboo or plastic, or other easily combustible materials, destroyed during the explosion. Tailoring of sleeves is produced by synthetic threads, which provide the requirements for the breaking load of the seam and the quality of tailoring. For the manufacture of shell 1 can be used fabric from polypropylene film yarn or high-pressure polyethylene. The fabric must comply with GOST 30090-93 “Bags and bag fabrics. General technical conditions. GOST 32522-2013 “Polypropylene woven bags. General technical conditions. The surface density of polypropylene fabric shell material 1 should be in the range of 60-80 g / sq. Shell 1 can be made from a single cut of woven polypropylene fabric. Tailoring is made by blending multifilament thread on sewing machines with a two-line chain seam with a hem in accordance with GOST 30090 “Bags and bag fabrics. General technical conditions. The diameter of the shell 1 is equal to or greater than 10-20 mm in diameter. The neck of the funnel 2 is made of bag fabric according to GOST 30090-93 “Bags and bag fabrics. General specifications "and is designed to load materials into the shell 1. The neck of the funnel 2 are made in the form of the surface of a truncated cone, the larger diameter of which is equal to the diameter of the rigid ring 3, and the smaller - the diameter of the shell 1. The diameter of the neck of the funnel 2 in the lower part should be equal to the diameter shell 1. The diameter of the neck of the funnel 2 in the upper part must be equal to the diameter of the ring 3. The diameter of the ring 3 must be at least 100 mm larger than the diameter of the well into which the sleeve is placed. To facilitate the lowering of the shell 1 into the well, the lower end of the shell 1 should be equipped with a cargo pocket 5 with a slot 6 in the side of the shell 1. In the transport position, the shell 1 is wound on the ring 3, packed in packs and packed in polypropylene bags (conventionally not shown ). If necessary, the outer sides of the sleeve are fixed with adhesive tape in order to exclude the self-dissolution of the shell 1 during the descent, for example paper, which is broken when the sleeve is filled with an explosive. In the manufacture of shell 1 of high-pressure polyethylene, it consists of a polyethylene shell 1 with a pocket 5 for cargo with a slot 6 in the side of the shell, a plastic (or metal) ring 3 and the neck of a funnel 2 made of polyethylene, which is soldered to the upper end of the shell is 1, and the plastic ring is soldered into the upper base of the neck 2 of the funnel. Hold the sleeve in a predetermined position occurs due to the retaining ring 3 at the wellhead. The length of the shell 1 is measured from the upper base of the neck of the funnel 2 to the lower end, not including the pocket 5 for cargo. The shell 1 can be made from a single cut of the plastic sleeve. Shell 1 consists of a polyethylene folded sleeve with a pocket 5 for cargo with slot 6, a ring 3 and a funnel neck 2 made of a polyethylene sleeve with soldered wedges, the lower base of which is soldered to the upper end of the folded sleeve, and the ring 3 soldered into the upper base the mouth of the funnel 2. The diameter of the folded sleeve in the expanded form must be greater than or equal to the diameter of the wells in which they will be placed. The retention of the shell 1 of high-pressure polyethylene in a predetermined position is due to the retaining ring 3 at the wellhead. The length of the shell 1 of high-pressure polyethylene is measured from the upper base of the neck of the funnel 2 to the lower end of the folded sleeve.

Sleeve for dispersed well charges works as follows.

For uniform loading of the sleeve in the well in the pocket 5 for the load put the load (a piece of rock or tamping material) through the slot 6 in the side of the shell 1. Lower the sleeve into the blast hole (not shown conventionally). Then, the well is loaded with an explosive with the filling of the inner space of the sleeve. Due to the formation of shell 1 with longitudinal ribs in the form of convex 9 and concave 8 folds, the least interaction of the sleeve elements with the walls of the explosive well bore is achieved, and the shell is twisted when filled with an explosive due to the effective counteraction of the concave longitudinal ribs 8 and convex 9 folds. Also, due to the longitudinal stiffening ribs in the form of concave 8 and convex 9 folds, the speed of descent increases and the probability of wellbore collapses with the formation of an explosive charge of a sustained cylindrical shape.

The use of sleeves to disperse borehole charges provides the following benefits:

- reducing the likelihood of wellbore collapse during installation;

- elimination of twisting the sleeve when filled with explosives;

- reducing the cost of the device;

- simplified installation operations;

- simplify the design of the device.

Claims (2)

1. A hose for distributing borehole charges, including a ring sewn into the neck of the funnel, which passes into the shell, ending with a cargo pocket, characterized in that the shell contains longitudinal stiffening ribs in the form of symmetrical convex and concave folds, the cargo pocket is formed by flashing the lower part of the shell with a slot in the side, and the ring in the neck of the funnel is made of non-metallic. 2. The sleeve according to claim 1, characterized in that the convex and concave folds from the outer surface of the sleeve are fixed with adhesive tape.

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