CS240674B1 - Geophone wiring to indicate the flow of medium in the pipe - Google Patents

Abstract

The connection of a geophone for indicating the flow of a medium in a pipeline concerns the field of mechanical engineering and processing and is particularly suitable for environments with a risk of explosion of gases, dust and vapours in deep mines and processing plants. The essence is that the geophone (1) placed on the pipeline senses the amplitude from the shocks and swirls of the flowing medium and its signal is evaluated in the evaluation unit (4), from where the signal is fed to the indicator panel. The connection can be used wherever there are shocks in the pipeline from non-laminar flow of the medium, or where the medium contains solid particles. It is particularly suitable for the chemical industry.

Description

The invention relates to the connection of a geophone for indicating the flow of medium in a pipeline, particularly suitable for environments with a risk of explosion of gases, vapors and dust in underground mines and coal treatment plants.

So far, geophones have been used as probes for seismic measurements and in geology. Conductive or inductive sensors are used to indicate the medium flow. In both cases, the sensor itself is located in the flow of material - the medium and is exposed to the medium and abrasion. As a result, their service life and serviceability are very low and emergency situations occur with all negative economic impacts on the entire operation. The sensors used up to now have a mechanical connection to the flow evaluator, where the flow medium is damaged and thus disabled.

These disadvantages are minimized by the use of a geophone for indicating the flow rate of the medium in the pipeline according to the invention, characterized in that the geophone mounted on the pipeline to be monitored is connected by a conductor to an evaluation unit consisting of an amplifier connected to an integrator. further on comparator, output power member with relay, connected to signal circuit and terminals.

The use of a geophone wiring to indicate the flow of media in a pipeline allows for indication when placing the geophone on a pipeline outside the material or media pull. Therefore, the geophone sensor is not exposed to chemical or mechanical influences, abrasion and has no moving parts, thus its service life is considerably longer. The whole wiring including the evaluation unit is simple, using electronic components with minimum energy consumption. The simplicity of the connection eliminates maintenance at all, since it focuses only on the sensitivity setting according to the medium. The cost is also very cheap.

240 074

BRIEF DESCRIPTION OF THE DRAWINGS In the accompanying drawings, one exemplary embodiment of a geophone connection for indicating the flow rate of a medium in a pipeline according to the invention is schematically illustrated.

The geophone 1 is housed in a housing on the hydrocyclone outflow line 2 or the monitored line. The geophone 1 is connected by a conductor 2 to an evaluation unit 4, to whose terminals 6 an indicator panel (not shown) is connected. The evaluation unit 4 consists of a voltage amplifier 41 of the integration member 42 of the comparator 43 of the output member 44 and of the signaling circuit 45 »

Turbulence ongoing media - liquids, suspensions or solids in the conduit 2 _f shock occurs whose amplitude is sensed by the geophone first signal conductor 2 is supplied to the evaluation unit 4 »where, after amplification in a voltage amplifier 41 integrates integrating member _42; the resulting voltage is compared to a reference voltage in the comparator 43 from where the signal passes to the output member 44 of the signaling circuit 45 and via terminals 2 to the display panel - not shown.

The ease of assembly and design makes it possible to use the geophone wherever there are impacts from the non-laminar flow of the medium in the pipeline, or where the medium contains solid particles, especially in the chemical industry.

Claims (1)

SUBJECT OF THE INVENTION 240 674 Connection of a geophone for indicating the flow of medium in the pipeline, especially in coal and ore processing plants using an amplifier, evaluation unit and comparator, characterized in that the geophone (1), fixed on the pipeline (10) to be monitored, is connected by its outlets with an evaluation unit (4) consisting of an amplifier (41) connected to the integrator (42) and further to a comparator (43), an output power member with a relay (44) connected to the signaling circuit (45) and the terminals (5).