RU129622U1 - CAST CHARGE - Google Patents

Abstract

1. The charge is cast in a polymer case for industrial blasting, containing explosive material having a socket, and including a case with a bottom, on which there is an eyelet with a hole for attaching a charge, and an opening on the case for passing an explosive line, which is located on the opposite side from the bottom case, and a cover immersed in the case, characterized in that the case on both sides is provided with threads with a pitch of 6 mm and a number of turns from 4 to 7 each for screwing the charges together with each other until the required total weight s explosive materiala.2. The charge according to claim 1, characterized in that on the bottom side the body is equipped with a metric external thread with a radius of rounding of the protrusion of 0.6 mm and a radius of rounding of the groove of 0.8 mm, and the opposite side of the body is equipped with a metric internal thread with a radius of rounding of the groove of 1.5 mm and a projection radius of 0.3 mm. 3. The charge according to claim 1, characterized in that the shell thickness is 1.1-1.4 mm, the diameter of the hole for the passage of the explosive line is 8-9 mm. The charge according to claim 1, characterized in that the eyelet for attaching the charge has an opening with a diameter of 5-6 mm. The charge according to claim 1, characterized in that the socket has a diameter of 8-9.5 mm, a depth of 70 mm, and the lid has a hole matching the hole of the socket. The charge according to claim 1, characterized in that the charge contains hexolite as explosive material, while the mixture contains hexogen in an amount of 45-75 wt.%, The rest is TNT up to 100 wt.% 7. The charge according to claim 1, characterized in that the known composition is used as the explosive material.

Description

The utility model relates to cast charges for industrial blasting, including that it is intended for use in seismic and other geophysical works, at temperatures from minus 50 ° С to plus 50 ° С. Charges can be used for blasting when initiated from electric detonators such as ED-8, EMF, EDPR, EDKZ and other explosive devices, similar in initiating ability, permitted by the Russian Technical Supervision Authority.

Known pressed waterproofing TNT blocks (charges) with a central channel [OST 84-1367-76], used as explosive materials (VM) for seismic and other types of geophysical work on the earth's surface, as well as intermediate detonators when conducting open explosive works of mountain and non-mountain nature.

Known [OST 84-411-80], pressed waterproofing TNT, TNT-RDX detonators with a central channel of the following types:

- T - 400G - pressed waterproofing TNT for blasting in wells of any water cut, including with running water, with a charge being in the water for up to 6 days;

- TG - 500 - molten TNT-hexogen for blasting in wells of any water cut with an unlimited life of charges in water.

Known TNT-RDX checker THF-850E, containing a through channel and a nest, the inlet openings of which are connected by a recess [Utility Model Certificate No. 3442 of 12/27/95, cl. 6 F42C 1/06].

To increase the scope of application, the THF-850P checker-detonator is known, containing a through channel and a socket, the inlet openings of which are connected by a recess, made by pouring a mixed explosive material into a shell made of a polymeric material, having edges rounded inward, extending beyond the end parts of the product and two ring protrusions on a cylindrical surface [Certificate for utility model No. 12238 of 06/03/99, class. 6 F42C 1/06].

Practically for similar purposes, a detonator block is known [Certificate for Utility Model No. 13091 dated 10.26.99, class 7 F42D 1/00], having a socket and a through channel, the inlet openings of which are connected by a recess, and made by pouring from a mixed explosive, including trotyl, which is provided with a plastic shell along the lateral and lower end surfaces with the exception of the recess area, and the lateral surface of the checker has deviations from the cylindrical shape fixing the shell on the checker.

Also for practically similar purposes, a detonator block is known, containing explosive material having a through channel and a socket, the inlet openings of which are connected by a recess, and containing a shell (body) of polymeric material, having edges rounded at the inside, facing the end parts of the product and two ring protrusions on a cylindrical surface [Certificate of utility model No. 16680 of July 3, 2000, class. 7 F42C 1/06].

The closest utility model (prototype) of the same purpose to the claimed utility model for a combination of features is a detonator bomb for industrial blasting, containing explosive material having a through channel and a socket, the inlet openings of which are connected by a recess, and comprising a housing made of a polymeric material with rounded edges going into the ends of the pieces, and the body is made integral. The housing consists of two parts, upon contact of which the rounded part of the other enters the narrowing part of the other, and the contours of the connecting parts repeat each other [Utility Model Certificate No. 22534 of 08/07/2001, cl. 7 F42C 1/06].

However, this connection does not create coaxiality of the components of the prototype. When pouring two parts of the prototype, the deviation from its axis at a distance of 490 mm reaches 9 mm, which increases the likelihood of them getting stuck when moving in the well.

In the proposed utility model, the charge is molded in a polymer case for industrial blasting, containing explosive material having a socket and including a case with a bottom, on which there is an eyelet with a hole for attaching a charge, and an opening for passing an explosive line, which is located on the opposite side from the bottom of the case and a cover immersed in the housing, the housing on both sides provided with threads with a pitch of 6 mm and a number of turns from 4 to 7 each for screwing the charges together with each other until the necessary total masses of explosive material.

On the bottom side, the body is equipped with a metric external thread with a radius of rounding of the protrusion of 0.6 mm and a radius of rounding of the groove of 0.8 mm, and the opposite side of the body is equipped with a metric internal thread with a radius of rounding of the groove of 1.5 mm and a radius of rounding of the protrusion of 0.3 mm.

The thickness of the casing is 1.1-1.4 mm, the diameter of the hole for the passage of the explosive line is 8-9 mm.

The eyelet for attaching the charge has a hole with a diameter of 5-6 mm.

The socket has a diameter of 8-9.5 mm, a depth of 70 mm, and the lid has a hole matching the hole of the socket.

The charge contains hexolite as explosive material, while the mixture contains hexogen in an amount of 45-75 wt.%, The rest is TNT up to 100% wt.

As explosive material using a known composition.

The thread can reduce the noted drawback - misalignment of the charges after their assembly. The number of threads of less than 4 turns does not provide the required alignment; more than 7 turns significantly increases the cost of manufacturing a charge housing.

The connection of the metric external thread of one charge with a radius of rounding of the protrusion of 0.6 mm and a radius of rounding of the groove of 0.8 mm on the bottom side with a metric internal thread of radius of rounding of the groove of 1.5 mm and a radius of rounding of the protrusion of 0.3 mm of another charge provides the connection of charges with a friend with a given alignment.

The thickness of the body less than 1.1 mm does not provide strength characteristics, and more than 1.4 mm leads to an additional consumption of polymer material.

The diameter of the hole less than 8 mm for the passage of the explosive line does not allow the electric detonator to pass through it, and more than 9 mm reduces the stiffness of the product at its location.

The diameter of the eyelet hole of less than 5 mm does not allow the equipment used to mount the charge, and more than 6 mm reduces the fastening strength.

A hole diameter of less than 8 mm does not allow the electric detonator to be placed inside it, and a diameter of more than 9.5 mm cannot be used, since there will be a large air gap between the electric detonator and the surface of the explosive material.

When the amount of hexogen in hexolite is less than 45 wt.%, The heat of explosion of the charge is significantly reduced, and - more than 75 wt.%, Filling the body with explosive material becomes more complicated.

The use of explosive material of known composition leads to lower costs for admission of charge to industrial applications.

The charge molded in a polymer case 1 for industrial blasting, contains explosive material 2, having a socket 3, and including a case 1 with a bottom 4, on which there is an eyelet 5 with a hole with a diameter of 5-6 mm for securing the charge, and a hole with a diameter of 8-9 mm for the passage of the explosive line, which is located on the opposite side from the bottom of the housing, and the cover 6, immersed in the housing 1, while the housing 1 on both sides is provided with threads 7 and 8 with a pitch of 6 mm and the number of turns from 4 to 7 each for screwing charges each other until necessary Dima total weight of the explosive material.

On the bottom side 4, the housing 1 is provided with a metric external thread 8 with a radius R of a protrusion of 0.6 mm and a radius R of a groove of 0.8 mm, and the opposite side of the housing 1 is equipped with a metric internal thread 7 with a radius R of a groove 1.5 mm and the radius R of the rounding of the protrusion of 0.3 mm

The thickness of the housing 1 is 1.1-1.4 mm.

The cover 6 has a hole matching the hole of the socket.

Socket 3 has a diameter of 8-9.5 mm, a depth of 70 mm, and cover 6 has an opening that matches the opening of socket 3.

The charge contains 2 hexolite as explosive material, while the mixture contains hexogen in an amount of 45-75 wt.%, The rest is TNT up to 100% wt.

As the explosive material, you can use any known composition approved by Rostekhnadzor for use.

Comparison of the alignment of the prototype, consisting of two parts, and the proposed charge of the cast during its assembly was carried out according to the following method.

A prototype was made in the amount of 10 samples according to its description (the prototype is a prefabricated structure and consists of two parts). The first prototype sample was placed on a flat surface and its component part, where the nest was placed, was rolled on the table surface. The greatest deviation of the opposite end from the table surface was determined (the largest gap between the table surface and the end of the product, which indicates the misalignment of the sample, was determined.). The measurement was carried out using a ruler. The same measurements were carried out with the other four samples. The data recorded in the table.

Further, the proposed cast charges were collected in two pieces using a thread. One of the charges was rolled on a flat table, and the largest deviation of the open end from the table surface was determined from the open end of the second charge connected to the first. The methodology for determining the misalignment of the connected charges was similar, as in the measurement of the prototype. The data obtained were recorded in a table.

Comparative characteristics of the prototype and the proposed model are shown in the table.

As can be seen from the table, the prototype misalignment for a length of 490 mm is 8-9 mm, and the proposed utility model has less misalignment of 6-7 mm, which confirms the advantages of the proposed model compared to the prototype.

Table. Comparative characteristics of the prototype and the proposed utility model Name of indicator Values for models Prototype Proposed model 1 Dimensions of models, mm: - height 490 (assembled in two parts) 490 (assembled from two charges) - diameter 68 68 68 68 - diameter of the socket 8.0-9.5 8.0-9.5 8.0-9.5 8.0-9.5 - nest depth 70 70 70 70 2 Number of turns - - four 7 3 Mass of explosive material, g 2000 2000 2000 2000 4 Mass fraction of components,% - TNT fifty 27 55 25 - hexogen fifty 73 45 75 5 Alignment, mm 9 8 7 6 9 9 7 6 8 9 6 6 9 9 7 6 9 8 7 6

Claims (7)

1. The charge is cast in a polymer case for industrial blasting, containing explosive material having a socket, and including a case with a bottom, on which there is an eyelet with a hole for attaching a charge, and an opening on the case for passing an explosive line, which is located on the opposite side from the bottom case, and a cover immersed in the case, characterized in that the case on both sides is provided with threads with a pitch of 6 mm and a number of turns from 4 to 7 each for screwing the charges together with each other until the required total weight s explosive material. 2. The charge according to claim 1, characterized in that on the bottom side the body is equipped with a metric external thread with a radius of rounding of the protrusion of 0.6 mm and a radius of rounding of the groove of 0.8 mm, and the opposite side of the body is equipped with a metric internal thread with a radius of rounding of the groove 1 , 5 mm and a radius of rounding of the protrusion of 0.3 mm 3. The charge according to claim 1, characterized in that the thickness of the casing is 1.1-1.4 mm, the diameter of the hole for the passage of the blast line is 8-9 mm. 4. The charge according to claim 1, characterized in that the eyelet for attaching the charge has an opening with a diameter of 5-6 mm. 5. The charge according to claim 1, characterized in that the socket has a diameter of 8-9.5 mm, a depth of 70 mm, and the lid has a hole that matches the hole of the socket. 6. The charge according to claim 1, characterized in that the charge contains hexolite as explosive material, while the mixture contains hexogen in an amount of 45-75 wt.%, The rest is TNT up to 100 wt.% 7. The charge according to claim 1, characterized in that the known composition is used as the explosive material.

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