RU2676859C1 - Installation for dynamic tests - Google Patents

Abstract

FIELD: testing equipment.

SUBSTANCE: invention is related to testing equipment. Installation contains a powder accelerating device including a chamber and a barrel with a piston, a container for placing the test object, including an adapter in the form of a pipe installed coaxially with the barrel. Adapter, the chamber and the trunk are mounted on the guides with the possibility of moving along them. Barrel is equipped with a nozzle that enters the adapter, forming a sealed volume between the internal volumes of the container and the barrel. At the end of the nozzle and in the middle part of the adapter through grooves are made, which in the initial position are not aligned with each other, and when the barrel rolls back with the nozzle, their combination and discharge of powder gases occur.

EFFECT: expanding the functionality and ensuring multiple use of the container connecting unit with the booster device.

1 cl, 3 dwg

Description

The invention relates to a testing technique. The predominant area of use is the study of the properties of various products, their components and devices under the influence of dynamic loads, which are formed using the gunpowder accelerating devices of the barrel type.

When conducting tests using the above devices, it is necessary to ensure the safety and tightness of the container with the test object in order to obtain information about the test object after dynamic loading, while the task is to preserve and reuse the connecting nodes of the barrel, ensuring tightness of its connection with the container. One of the ways to solve the above problems is to create a device that ensures the tightness of the connection before the shot and adjust the amount and time of release of the powder gases after the shot.

A known installation for dynamic testing, including the accelerating device according to patent RU 2135925 (publ. 27.08.1999), which contains a barrel with a piston, a chamber with a powder charge and a nozzle extending into the internal volume of the barrel, the nozzle is equipped with a controller for the release of powder gases, made in the form of a movable element connected directly to the piston. In the process of moving the piston along the barrel, the regulator moves together with it and, gradually moving out of the nozzle, increases the passage section of the gap, and hence the influx of gases from the chamber.

In this design, the regulator provides only a change in pressure in the internal volume of the barrel.

Known installation for dynamic testing according to patent RU 2467300 (publ. 20.11.2012), selected as the closest analogue. The installation comprises a base on which the upper and lower rail guides are fixed, an accelerating device including a barrel and a chambers mounted on the lower guide with the possibility of moving along it, a container for placing the test object, containing an adapter in the form of a pipe made to move along the upper and lower guides, while the plane of symmetry of the guides are located in a vertical plane passing through the axis of the barrel. A piston is installed in the barrel, made of less dense material than the container adapter.

The design of the closest analogue does not provide tightness between the barrel of the booster device and the container, which limits its use in the performance of experiments with sealing the test object.

The technical result of the claimed invention is the expansion of functionality. An additional technical result is the multiple use of the connecting node of the container with the booster device.

The achievement of the specified technical result is ensured due to the fact that in the installation for dynamic testing, containing a powder booster device including a chamber and a barrel with a piston, a container for placing the test object, including an adapter in the form of a pipe installed coaxially with the barrel, an adapter, a chamber and a barrel mounted on rails with the ability to move along them, the new is that the barrel is equipped with a nozzle that goes into the adapter, forming a sealed volume between the internal volumes of the container EPA and the barrel, wherein an end portion of the nozzle and on the middle part of the adapter is provided with through slots, which in the initial position is not aligned with each other, while the barrel to recoil nozzle is their combination and discharge the powder gases.

Supplying the barrel with a nozzle allows, without changing the design of the barrel, to ensure its entry into the adapter and to ensure tightness between the internal volumes of the container and the barrel by using o-rings.

The implementation of the end section of the nozzle and the middle part of the adapter through the grooves, which in the initial position are not aligned with each other, and when the barrel rolls back with the nozzle, they are combined and discharge of powder gases, provides adjustment of the quantity and time of exit of the powder gases after firing and sealing the container own locking device. This ensures a delay in the release of powder gases and depressurization of the connection of the barrel of the booster device with the container. In addition, it ensures the safety of the connecting node and the possibility of its reuse to ensure tightness between the volumes of the barrel and container.

In FIG. 1, 2, 3 shows a fragment of the claimed device, where:

1- nozzles;

2 - adapter;

3 - clamp;

4 - stopper plug;

5 - a nut;

6 - a collet of a clamp;

7 - clamp terminal;

8 - ring;

9 - trunk;

10 - rollers;

11 - flange.

An example of a specific implementation of the claimed device can serve as a unit for dynamic testing, containing a powder booster device including a chamber and a barrel with a piston, a container for placing the test object, including an adapter in the form of a pipe mounted coaxially with the barrel. The adapter, camora and barrel are mounted on roller guides with the ability to move along them. The barrel is equipped with a nozzle with which it is rigidly connected by yokes. The nozzle is a transition element between the barrel and the container and enters the adapter, forming a sealed volume between the internal volumes of the container and the barrel. A ring is used from one end to the adapter, which serves as a support for roller guides. On the other side of the adapter, a collet with a clamp and a terminal is installed. Through grooves are made in the end portion of the nozzle and in the middle part of the adapter, which are not aligned with each other in the initial position, the length of the grooves of the nozzle being less than the length of the grooves of the adapter. The latch is equipped with rubber plugs, which are placed in the grooves of the adapter and are fixed in the selected position by a nut.

The operation of the claimed device is as follows.

To reduce the effect of powder gases on the container with the test object, the barrel channel 9 of the booster device is evacuated before being shot. Nozzles 1 barrel 9 and adapter 2 containers are designed for:

- ensuring tightness with subsequent evacuation of the internal cavity of the barrel 9 before firing;

- discharge of powder gases after a shot;

- holding the piston from axial displacement to the entrance to the container.

After the shot, the powder gases move the piston and under pressure enter the bore 9. The barrel 9 with the nozzle 1 rolls back. The adapter 2 remains in place, thanks to the ring 8 mounted on it, in which the recesses for the roller guides 10 are made. At the time of the rollback of the nozzle 1, the grooves made in it are aligned with the grooves of the adapter and the powder gases are discharged into the atmosphere. By shifting the retainer 3 along the adapter 2, the exit time of the powder gases after the shot can be adjusted. After selecting the required position of the latch, it is clamped to the clip using the terminal. Plugs 4 seal the internal volume of adapter 2 and prevent the discharge of powder gases ahead of time. To conduct the next experiment, the barrel 9 with the nozzle 1 along the roller guides 10 is pushed into the adapter 2 and the evacuation and sealing operations are repeated.

Using the inventive installation, a series of experiments was carried out, which showed its performance and the ability to achieve the specified result.

Claims (1)

Installation for dynamic tests, containing a powder accelerating device, including a chamber and a barrel with a piston, a container for placing the test object, including an adapter in the form of a pipe mounted coaxially with the barrel, an adapter, a chamber and a barrel mounted on rails with the ability to move along them, characterized in that the barrel is equipped with a nozzle that enters the adapter, forming a sealed volume between the internal volumes of the container and the barrel, while at the end of the nozzle and on the middle part of the adapter Through grooves are made, which in the initial position are not aligned with each other, and when the barrel rolls back with the nozzle, they are combined and the powder gases are discharged.

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