SU716011A1 - Seismic signal source - Google Patents

Description

(54) LAUNCHER OF SEISMIC SIGNALS

  .:

The invention relates to the field / geophysical, methods of exploration, and is intended to create elastic oscillations in the ice in the first medium using the energy of detonation products; gaseous mixtures.

Devices are known for creating elastic Seismic vibrations, containing, in conjunction with an amer, an inducing tube and an elastic radiating diaphragm.

. The disadvantage of these devices is the impossibility of creating the necessary amplitude of oscillation, which is limited by the strength properties of the material of the diaphragm.

The closest in technical capacity to the present invention is. a source of seismic signals containing a cylinder with bottoms and a cover, a piston with a rod, divided both the cylinder cavity into the combustion chamber and the damper cavity,

complete with the channel in the side ,,

the plate, the power supply system of the chamber with a combustible mixture, which is connected to the combustion chamber through the ignition tube, and the exhaust valve 2,

However, for the operation of this device, either high-pressure cylinders that are dangerous to handle (. When working on propane-oxygen mixtures) or a high-pressure compressor (when operating on gasoline mixtures) are necessary.

The aim of the invention is to simplify the device

The goal is achieved due to the fact that in the proposed source, controlled grippers, interaction with the piston are installed on the cylinder side surface, and the damper cavity channel is connected to the power supply system of the combustion chamber with a combustible mixture. .

FIG. 1 shows the source after the explosion of the combustible mixture in FIG. 2 - the same before the explosion.

The device contains a cylinder 1 with a bottom 2, a piston 3 with a rod 4, a cover 5 on which a spool is mounted b. The lateral surface of the cylinder 1 is equipped with controllable grips 7, an exhaust valve 8 and a channel 9, which is connected by a pipe 10, on which a valve 11, a mixer 12 and a check valve 13 are placed,

And the ignition tube 14 with the spark plug 15 connects the damper cavity 16 of the cylinder 1 to the combustion chamber 17.

The operation of the device is carried out

in the following way.

A signal is applied to the spool 6, which is activated, connects the cavity 16 of the cylinder 1 (Fig. 1) to the receiver of the base map compressor (not shown). The cavity 16 is filled with air to the required pressure, after which the valve b is activated, and the air supply stops

with . Valve 11 then opens, and compressed air located in cavity 1 1 flows through duct 9 through conduit 10 into mixture 12, where fuel is injected into the air and a fuel-air-fuel mixture is formed. The combustible mixture through the check valve 13 enters the -tuminal tube 14 and further into the combustion chamber 17 of cylinder 1, the air (products of the explosion) is forced out of it through the open outlet. valve 8 to the atmosphere. After removing the air (explosion products) from the combustion chamber 17

the purge valve closes and the combustion chamber is filled with the combustible mixture. The pressure in the damper cavity 16 and the combustion chamber 17 is equalized, the check valve 13 is closed, and at a signal, the valve 6 connects the damper cavity. 16 with the atmosphere, and the controlled grippers 7 release the piston 3, which, under the action of its own movement, moves downward, compressing the combustible mixture in the combustion chamber 17 (see Fig. 2). After compressing the combustible mixture, the valve 6 is activated, closing the damper cavity 16, and the mixture

§ВВ; 1ТЛЖЙШ Ёц: from the ignition 15. It is initiated in the firing tube 14 detBySonya pörёhbyit-into the combustion chamber 17, excite. explosion of combustible mixture in it. The explosion products formed affect the bottom 2, and the B hole, on which the source is installed, is emitted a pulse. At the same time: the products of the explosion affect the piston 3, which

moves up, squeezing the air in the damper cavity 16. When reaching the grippers, 7 portions 3 are installed on them and stopped. After this, the source is AGAIN ready for production of the next cycle, during which the need to use the compressor of the base machine is no longer necessary. This is ensured by the fact that in order to compress the air in the damper cavity 16, and therefore to prepare the combustible mixture for the next Cycle, the reactive force reported

piston in the explosion of a combustible mixture. Therefore, the production of the second and subsequent cycles begins with the operation of opening valve 11.

The proposed source of seismic signals allows to reduce the cost of work by about two times. In addition, it excludes environmental pollution, which is inevitable when known sources operate with compressors. .

Claims (2)

1. USSR author's certificate number 159301, cl. G 01 V 1/12, 1962. 2. USSR author's certificate According to the application 23333442/25, cl. G 01 V 1/02, 01.03.76 (prototype).