RU2309378C2 - Method for stripping of ammunition filled with hexogen-containing explosives, and installation for its realization - Google Patents

Abstract

FIELD: shipping of ammunition filled with hexogen-containing explosives.

SUBSTANCE: the method is based on crushing of the charge positioned in the ammunition body by action on it by central and/or peripheral jets of liquid fed under pressure, the stripping process is conducted in stages, at first a cavity is produced in the charge by the central jet of liquid that is fed under pressure during 30 to 90 s from the nozzle head off the nozzle unit that is installed at a distance of 10 to 15 mm from the charge surface, then the process is conducted by the central of peripheral jets at a preset speed of translational motion of the nozzle unit at whose contact, minimum one, with the charge surface the top force of its action of the charge by a value of not more than 0.7 kg is allowed, as soon as this force is attained, the nozzle unit is quickly moved aside by 10 to 15 mm, and after 5 to 10 s its translational motion to the bottom part of the ammunition body is resumed, where during 20 to 30 s from the moment of stopped of the nozzle unit the charge is being washed out, and the inner surface of the ammunition body is finally purified by the liquid jets at motion of the nozzle unit to its initial position at a speed exceeding the speed of its translational motion by 3 to 4 times. The mentioned method is realized with the aid of a set containing an ammunition attachment assembly, drive of its rotation, hollow rod that is movable in the axial direction, a nozzle unit with nozzle heads and injectors is positioned at the end of the hollow rod, chamber for reception of the mixture of explosive and liquid, mixture separator, purifying system, monitoring and control system.

EFFECT: enhanced safety at ammunition shipping.

10 cl, 3 dwg

Description

The invention relates to the field of ordnance disposal of ammunition (BP), mainly filled with hexogen-containing explosives (BB).

There is a method of extracting explosives from a PSU casing (RF patent No. 2173830, F42B 33/00, published September 20, 2001), which consists in opening the PSU casing and hydraulic cutting of an explosive by forming an axial channel with water jets of diameter equal to (3 ÷ 4) d _about , and a screw groove reaching the surface of the PSU case. The diameter (d _o ) of the axial and side nozzles is 0.6 mm, therefore, the axial channel has a diameter of (1.8 ÷ 2.4) mm.

The disadvantage of this method is that the geometrical dimensions of the nozzle in which the nozzles are made are incommensurable with the diameter of the axial channel and when it moves, contact with the surface of the charge will occur, and the lack of control over the magnitude of the force of the nozzle on the surface of the charge leads to an emergency.

A known method for decomposing cases filled with explosives (Germany, patent No. 4010757, F42D 5/04, published 01.08.1991), is based on crushing the explosive charge in the BP case with high-pressure water by feeding it through a rotating nozzle to a stationary explosive or through nozzles mounted stationary, and the housing with the explosive charge in this case rotates relative to the nozzles, with the subsequent collection and separation of the mixture of explosives and water.

This method is carried out using a device known from the same patent, comprising a hollow shaft with an inlet channel inside, at the end of which, facing the explosive, there are radial and axial nozzles. In addition to the nozzles, a cutting edge (knife) is installed at the end of the shaft.

The disadvantages of the above method and device for its implementation is the lack of monitoring and control over the technological parameters of the demarcation process, and the presence of a cutting edge in the absence of control over the magnitude of the force when it comes in contact with the surface of the charge leads to an emergency.

Closest to the proposed invention relating to a method for discharging BP with aluminized hexogen-containing charges is the method according to Eurasian patent No. 001061, F42B 33/06, F42D 5/04, C06B 21/00, published on 10/30/2000).

This method consists in the fact that the charge is affected by the central and peripheral jets of liquid supplied under pressure through nozzles, the temperature of the extracted mixture of explosives and liquid is constantly measured using a sensor, and if the set temperature is exceeded, the liquid is stopped.

The same patent describes an installation for demarcating a PSU, adopted as a prototype, containing a PSU mounting unit, a drive for rotating it, an axially movable hollow rod with a nozzle block (SB) at the end facing the charge, an axial displacement rod for the hollow rod, a camera for receiving a mixture of explosives and liquids, a liquid purification system, a monitoring and control system, and nozzle heads SB are located at an angle and asymmetrically relative to the longitudinal axis of the hollow rod with SB.

A common disadvantage of the method of demarcating the PSU and the device for its implementation is the uncontrolled movement of the hollow rod with SB, which increases the danger of the process of demarcation and reduces its effectiveness.

The task of the claimed invention is to increase the safety and efficiency of demarcation BP filled with hexogen-containing explosives.

The problem is solved by choosing the intervals of optimal parameters for moving the rod from the SB and controlling these values in order to prevent the SB from affecting the charge surface with a force above the maximum permissible value.

To obtain the named technical result in the proposed method, including the impact on the surface of the charge of the central and peripheral jets of liquid supplied under pressure through an axially movable nozzle block with nozzle heads and nozzles, followed by collection and separation of the explosive and liquid mixture, the demilitarization process is carried out in stages by the action of the central and or peripheral jets of liquid, and at the beginning of the process, a cavity is formed in the charge by a central jet of liquid, which is supplied under pressure for 30-90 s from the nozzle head of the SB installed at a distance of 10-15 mm from the end surface of the charge, then the process is conducted by the central and peripheral jets at a given speed of translational movement of the hollow rod with the SB, at the contact of which, at least once, with the surface of the charge, the maximum force of its impact is allowed with a value of not more than 0.7 kg, after which the SBs are accelerated away by 10-15 mm and after 5-10 seconds it is progressively moved to the bottom of the PSU case, where within 20-30 seconds from the moment SB stops wash explosives and after The internal surface of the PSU case is flushed cleanly from explosives when the SB is accelerated to its initial position at a speed 3-4 times higher than the speed of its translational movement.

To achieve the named technical result, it is proposed to install, which, like the closest to it, known by the Eurasian patent No. 001061, contains a BP mount, its rotation drive, an axially movable hollow rod, at the end of which, facing the charge, is installed SB with nozzle heads located at an angle and asymmetrically with respect to the longitudinal axis of the hollow rod, and nozzles, an axial displacement drive of the hollow rod with the SB, a chamber for receiving a mixture of explosives and liquids, a device for separating a mixture of explosives and liquids and liquid purification system, monitoring and control system. In contrast to the known, the proposed installation additionally contains a sensor for the initial position of the hollow rod with SB, a sensor for controlling the BP rotation speed, which are connected to the monitoring and control system, an ultimate force control device mounted on the hollow rod, and in parallel with which a rod equipped with a guide sleeve and connected through it with a traverse with a hollow rod through a limit force control device, the body of the latter and the guide sleeve of the rod are equipped with copiers, on the path of movement of which fitted and connected with the control and management system incorporating the sensor and disable the liquid supply pump, a sensor Sa final position, a sensor monitoring the velocity and amount of displacement Sa, Sa charge the surface of the touch sensor.

The control and management system includes a unit for setting and regulating the speed of rotation of the PSU, a unit for setting and regulating the speed of movement of the hollow rod with the SB.

The nozzle head for feeding the central jet of liquid is located at an angle of 7-35 ° to the longitudinal axis of the hollow rod with the SB, and the nozzle head for feeding the peripheral jet is at an angle of 40-65 ° to the longitudinal axis of the hollow rod with the nozzle block.

Choosing different angles of nozzle heads arrangement and parameters of BP rotation speed and SB moving speed, we obtain a given particle size distribution with a minimum fine fraction content, which reduces the cost of restoring the utilized explosive for its further use in industry.

The invention is illustrated by drawings, which depict:

figure 1 - General view of the installation;

figure 2 - the location of the nozzle heads in the SB;

figure 3 is a sequence diagram of the phased operation of the installation.

The proposed method is carried out in the following sequence.

The ammunition is installed in the mount 1 and rotate it at a given speed, for example 15-140 rpm (depending on the caliber of the power supply unit), the hollow rod 3 is moved with the nozzle block 4 (Fig. 3, item 1) at a speed, for example, 20-120 mm / min, to the end surface of the charge, fluid is supplied under pressure, for example, 63-160 MPa in SB 4, which is installed at a distance of 10-15 mm from the surface of the charge, and for 30-90 with a central jet supplied from the nozzle head 27, located at an angle of 7-35 ° to the longitudinal axis of the hollow rod with SB, form a cavity in the charge (figure 3, position 2), dressed in the animated part of the PSU case, then SB 4 is moved to the formed cavity and the charge is washed out by the central and peripheral jets (Fig. 3, item 3), the last of which is fed from the nozzle head 28, located at an angle of 40-65 ° to the longitudinal axis hollow rod with sat. When SB 4 is contacted at least once with a surface of a charge having a local density greater than average, the maximum force of its impact on a surface of a charge of no more than 0.7 kg is allowed, upon reaching which SB 4 is diverted to a distance of 10-15 mm from it at a speed greater than the feed rate, and the charge is washed out by the central and peripheral jets for 5-10 s (Fig. 3, Item 4), after which the nozzle block 4 is moved to the bottom of the PSU housing, where it is stopped for 20-30 with and completely wash the charge from the bottom of the PSU case (figure 3, position 5), and konchatelno purified inner surface of the housing at an accelerated movement Sa 4 to its initial position at a speed which is 3-4 times more than the feed rate (3, poz.6-7).

In the process of unloading the BP in the chamber 9, a mixture of explosives and liquids is collected, which is fed through a pipe 37 to a separation device 10, where the explosives are separated from the liquid and sent for processing and preparation of industrial explosive compositions, and the liquid is fed through a pipe 40 to the cleaning system 11, where it is cleaned and returned through line 41 to the nozzle heads 27 and 28, and through line 34 and the annulus 3 of the hollow rod 3 to nozzles 29.

The proposed installation for the demilitarization of PSUs filled with hexogen-containing explosives contains a PSU mount unit 1 (Fig. 1), a drive 2 for its rotation, a hollow rod 3 with SB 4 (Figs. 1 and 2) at the end facing the charge, mounted axially movement from the electric motor 5 through the gearbox 6, and screw-nut transmission 7, crosshead 8, a chamber 9 for receiving a mixture of explosives and liquids, a device 10 for separating a mixture of explosives and liquids, a liquid purification system 11, an ultimate force control device 12 connected through nut 13 with a hollow rod 3, control and monitoring system 14 phenomena and associated sensor 15 of the initial position of the hollow rod 3 with SB 4, the sensor 16 for controlling the speed of rotation of the PSU, sensor 17 for turning on and off the high pressure pumps and coolant, sensor 18 of the final position of the hollow rod with the SB, sensor 19 for controlling speed and size moving the hollow rod 3 with SB 4, the sensor 20 touch SB with the surface of the charge.

The ultimate force control device 12 includes a housing 21 in which a spring 22 is installed, the allowable impact force of which is set using the nut 13. The hollow rod 3 is mounted coaxially with the power supply unit using the rod 23 located in the guide sleeve 24, which is installed in the crosshead 8 A copier 25 is placed on the guide sleeve 24, and a copier 26 is placed on the housing 21 of the ultimate force control device 12. A sensor 20 for touching the SB with a charge surface is installed on the path of the copier 26, and a sensor 15 is mounted on the path of the copier 25 cial position of the hollow rod 3 to 4 Sa, sensor 17 on and off the high-pressure pump and the coolant sensor 18 and the final position of the hollow rod with Sat.

The nozzle block 4 (figure 2) contains two nozzle heads 27 and 28 and two nozzles 29. The nozzle head 27 is designed to supply a central jet of liquid under high pressure and is located at an angle of 7-35 ° to the longitudinal axis of the hollow rod, and the nozzle head 28 - for supplying a peripheral jet of liquid under high pressure and is located at an angle of 40-65 ° to the longitudinal axis of the hollow rod. Nozzles 29 are designed to supply to the surface of the charge of the coolant.

The nozzle heads 27 and 28 are connected through a water supply channel 30 to a high-pressure pump 31, for monitoring the operation of which a pressure gauge 32 is installed, and nozzles 29 through an annular space 33 are connected by a pipe 34 to a pump 35, to control the operation of which a pressure gauge 36 is installed.

A chamber 9 for receiving a mixture of explosives and liquid by a pipe 37 is connected to a separation unit 10 of a mixture of explosives and liquid, the latter is connected by a pipe 38 to a pump 39 and a pipe 40 to a liquid purification system 11, which is connected by a pipe 41 to a high pressure pump 31 and to a pump 35 for supplying coolant.

The monitoring and control system 14 is connected with the drive unit 2 for rotating the power unit and with the electric motor 5 for the drive unit for moving the hollow rod.

Installation works as follows.

Ammunition prepared for demilitarization is installed in the PSU mount unit 1. By pressing a button on the control panel (not shown in the drawing), a signal is supplied to the monitoring and control system 14, which includes a PSU rotation drive 2 with a given speed, for example 15-140 rpm (depending on the PSU caliber), and an axial displacement drive motor 5 hollow rod 3 with a nozzle block 4, which performs translational movement (figure 4, position 1), for example, at a speed of 20-120 mm / min from the initial position, at which the copier 25 is at the level of the sensor 15, until the copier 25 will not be at the level of the sensor 17 turning on the pumps, which th is triggered when the SB is at a distance of 10-15 mm from the surface of the charge, and the control and control system 14 turns off the electric motor 5 of the rod movement drive and the central stream forms a cavity in the charge for 30-90 s (Fig. 3, item 2) . After this time, the monitoring and control system 14 includes an electric motor 5 and a hollow rod 3 with SB 4 translationally moves (Fig. 3, item 3), and when the SB contacts the surface of the charge and exposes it with a force of more than 0.7 kg, a copier 26 located on the housing 21 of the ultimate force control device 12, reaches the sensor 20 for touching the charge surface with the nozzle unit, the signal from which enters the monitoring and control system 14, which commands the reverse of the electric motor 5, and the rod 3 with SB 4 is diverted to a distance of 10 15 mm from surface h the charge (Fig. 3, pos. 4), and after 5-10 s a command is sent to the electric motor 5 to translate the hollow rod with the nozzle block 4, which moves if the SB does not meet with the surface of the charge, the local density of which is greater than the average density, to the sensor 18 of the final position of the SB, when triggered, the monitoring and control system 14 turns off the electric motor 5 of the drive drive for moving the hollow rod 3 with the nozzle block 4 and within 20-30 seconds the charge is washed out from the bottom of the PSU case (Fig. 3, 5) then turn on the electric motor 5 and the rod with SB is accelerated out of the PSU case (Fig. 3, pos. 6-7) with a speed 3-4 times higher than the feed rate, and when the copier 25 reaches the sensor 17 for turning on and off the high pressure pumps and coolant, the pumps 31 are turned off and 35 and drive 2 rotation BP. When the sensor 15 of the initial position of the hollow rod with the SB is activated, when the copier 15 reaches its position, the electric motor 5 of the drive for moving the rod with the SB is turned off. This completes the process of unloading the PSU, during which the mixture of the extracted explosives and liquid from the PSU case is collected in the chamber 9, from which it passes through the pipe 37 to the separation device 10, where the explosives are separated from the liquid and sent for processing and preparation of industrial aircraft, and the liquid the pump 39 is fed into the pipe 40, through which it enters the cleaning system 11, and from it returns through the pipe 41 to the nozzle heads 27 and 28, and through the pipe 34 and the annular space 3 of the hollow rod 3 to the nozzles 29.

Implementation Example:

Ammunition, for example, 152 mm caliber, filled with hexogen-containing explosives weighing 6.5 kg, with a density of about 1.7 g / cm ³ , was discharged under the following technological conditions:

pressure at the outlet of the pump, MPa 160 working fluid flow rate, l / min 12 reduced nozzle head diameter, mm one BP rotation speed, rpm 34 feed speed of a hollow rod with SB, mm / min 55 time during which a cavity is formed in charge, s 90 time during which explosives are washed out in the bottom PSU cases, with thirty time for which the PS is discharged, min 12

Claims (10)

1. The method of demilitarization of ammunition filled with hexogen-containing explosives, comprising exposing the charge surface to the central and peripheral jets of liquid supplied under pressure through nozzle heads located in the nozzle block, movable in the axial direction, followed by collection and separation of the explosive and liquid mixture, characterized in that the process of demarcation is carried out in stages, at the beginning of the process in the explosive charge form a cavity with a central jet of liquid, which they are pressed under pressure for 30-90 s from the nozzle head of the nozzle block, which is installed at a distance of 10-15 mm from the surface of the charge, then the process is conducted by the central and peripheral jets during the translational movement of the nozzle block, and when it comes into contact at least once, with the surface of the charge and reaching the value of the limiting force of the impact, the nozzle block is accelerated, with a speed exceeding its translational movement, retracted by 10-15 mm and after 5-10 s resume its translational movement to the bottom of the shell pass, within 20-30 s from the moment the nozzle block stops, the charge is washed out and the inner surface of the munition shell is finally cleaned when the nozzle block is accelerated from the munition housing to its initial position. 2. The method according to claim 1, characterized in that the ultimate force of the impact of the nozzle block on the surface of the explosive charge of not more than 0.7 kg is allowed. 3. The method according to claim 1, characterized in that the central jet is fed from a nozzle head located at an angle of 7-35 ° to the longitudinal axis of the hollow rod with the nozzle block. 4. The method according to claim 1, characterized in that the peripheral stream is fed from a nozzle head located at an angle of 40-65 ° to the longitudinal axis of the hollow rod with the nozzle block. 5. The method according to claim 1, characterized in that the nozzle block from the ammunition body is moved to its initial position at a speed of 3-4 times the speed of its translational movement. 6. Installation for the demilitarization of ammunition filled with hexogen-containing explosives, containing the mount of the ammunition, its rotation drive, axially movable hollow rod, at the end of which, facing the charge, there is a nozzle block with nozzle heads located at an angle and asymmetrically relative to the longitudinal axis of a hollow rod with a nozzle block, and with nozzles, an axial movement drive of a hollow rod with a nozzle block, a chamber for receiving a mixture of explosive and liquid, installation section mixture of explosives and liquids, a liquid purification system, a monitoring and control system, characterized in that it further includes a sensor for the initial position of the hollow rod with a nozzle block, a sensor for controlling the speed of rotation of the ammunition, which are associated with a control and management system, a device for monitoring the ultimate forces mounted on a hollow rod, a rod is provided parallel to the last one, equipped with a guide sleeve and connected through it with a traverse to the hollow rod through the limit control device force, the casing of which and the guide sleeve of the rod are equipped with copiers, on the path of which are installed and connected to the monitoring and control system, a sensor for turning on and off the liquid supply pumps, a sensor for controlling the speed and magnitude of the movement of the nozzle block, a touch sensor for the nozzle block with the charge surface, a sensor end position of the nozzle block. 7. The installation according to claim 6, characterized in that the monitoring and control system includes a unit for setting and regulating the speed of rotation of the ammunition, a unit for setting and regulating the speed and amount of movement of the hollow rod with the nozzle block. 8. Installation according to claim 6, characterized in that the ultimate force control device is designed for maximum allowable force of not more than 0.7 kg. 9. Installation according to claim 6, characterized in that the nozzle head for supplying a central jet of liquid is located at an angle of 7-35 ° to the longitudinal axis of the hollow rod with the nozzle block. 10. Installation according to claim 6, characterized in that the nozzle head for supplying a peripheral jet of liquid is located at an angle of 40-65 ° to the longitudinal axis of the hollow rod with the nozzle block.

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