CN2313232Y - Noval seismic detector - Google Patents

Abstract

The utility model relates to a magnetic suspension type half-wave seismic detector, which is composed of a copper outer shell, a spiral tube coil, an aluminum cover, two O-shaped cylindrical magnets, a copper bar slide way, a copper shell body, a plastic outer shell, and a tail cone, wherein, the two magnets are arranged on the copper bar slide way; the lower magnet is fixed, and the upper magnet bears the repulsion of the other magnet and suspends on the other magnet; both of the magnets and the copper bar slide way are fixed in the aluminum cover of the spiral tube coil to generate electromagnetic induction signals for reflective strong wave. The utility model has the advantages of firmness, impact resistance, anti-interference, fatigue resistance, high stability, high measuring precision, etc.

Description

A kind of novel seismic sensor

The utility model relates to a kind of seismic sensor, particularly relates to the petroleum prospecting seismoreceiver.

The coil aluminium cover of traditional petroleum prospecting seismoreceiver is movable, its direction of motion is opposite with explosive source generation earthquake reflected wave vibrations direction, when the reflection wave vibrations make progress, described coil aluminium cover is downward, therefore formed contrast, bring certain difficulty will for like this explanation personnel's Data Processing work, can produce very big sum of errors illusion thus.The transmission signals of traditional seismoreceiver is the spring butt joint, influences the signal circuit connection reliability.Detect simultaneously quality also be subjected to copper metal spring sheet elastic force, flexible, prolong and the influence of restoring force time in advance.

The purpose of this utility model is to provide a kind of maglev type novel seismic sensor, makes its generation consistent with the earth reflection seismic direction, can with elastic force, flexible, in advance, the accurate synchronous reflection wave of postponement, restoring force time.

Novel seismic sensor provided by the utility model is by copper shell 3, toroidal winding and 5, two O type cylindrical magnets 4.7 of aluminium cover, and copper rod slide rail 6, copper lid 2,8, positive and negative terminal 10, wave detector plastic casing 1 and tail cone 9 are formed up and down; Described two O type cylindrical magnet 4,7 homopolarities are relative, are nested with on copper rod slide rail 6, and together place toroidal winding aluminium cover 5; The O type cylindrical magnet 7 that is positioned at the bottom is fixed magnets, and superposed O type right cylinder 4 suspends at an upper portion thereof by the repulsion of lower magnet 7; The outside at toroidal winding aluminium cover 5 is that one deck comprises: the housing of copper lid 2,8 and copper shell 3 up and down; Draw the positive and negative terminal of two toroidal windings on bottom end cover 8, this device outermost layer is a plastics protecting sheathing 1, is flat mouthful of hangnail shape tail cone 9 in plastics protecting sheathing 1 lower end.

Described two O type cylindrical magnet like pole N are extremely relative.

The utility model utilizes the magnetic property transforming principle, adopts the magnet like pole generation magnetoelasticity of repelling each other, and magnet is suspended in the air, be subjected to ground seismic wave function, magnet is made relative cutting magnetic line movement in coil, will produce induction electromotive force in the coil, is the signal source output of seismoreceiver.The earthquake source book that this device can obtain to forge a good relationship has firmly, and anti-collision, shock resistance, endurance, anti-interference strong, good stability are not subjected to the restriction and the measuring accuracy advantages of higher of spring travel.

The drawing explanation:

Accompanying drawing is the structural representation of novel seismic sensor provided by the utility model.

Principle of work of the present utility model is as follows: well-known, how much relevant the size of induction electromotive force is with the magnetic line of force of unit interval interior loop cutting, promptly is directly proportional with the magnetic line of force rate of change that passes coil:

∑: the size of induction electromotive force, unit is volt;

△ ψ: the variation of the magnetic line of force, unit is a weber:

△ t: the variation of time, unit is second.

If coil is not a circle, but the N circle, whole winding can be regarded N single-turn circular coil as and be in series.When the explosive charge focus has produced seismic event, to the underground seismic wave that imports into, cry and inject ripple by ground.From the underground shock wave of reflection earthward, be reflection wave.Movable O type cylinder-shaped magnet in the wave detector is subjected to seismic event vibrations action of inertia power, ceaselessly shakes synchronously with the upper and lower reciprocal amplitude of vibration of the earth, weakens and disappears with vibrations.Magnet moves up and down in closing coil aluminium cover, and cutting magnetic line changes magnetic flux, wave detector is subjected to injecting the effect of ripple, and movable O type cylindrical magnetic magnetic pole iron repels each other, and produces bounce, it is hindered, and cushion effect and restoring force obtain balance, magnetic flux just reduces, signal has also just weakened, but the reception of increase enhancing reflection wave is underground, the different levels rock, the strong and weak reflected signal of hydrocarbon zone is as oil gas field tectonic analysis reference frame data.After seismoreceiver is subjected to injecting the effect of ripple, be subjected to the effect of ground reflection wave again.Two blocks of O type magnet produce and repel each other, and movable magnet moves upward in closing coil aluminium cover, and it is floating to produce magnetic, bounce-back, and the big or small speed of elastic force is relevant with the power of underground reflection wave.Also with the speed of cutting magnetic line, the magnetic flux change size induction electromotive force that produces, sensor current signal is relevant, and movable O type cylindrical magnet is subjected to ground seismic wave function, is coupled with synchronous vibrations of the earth amplitude of vibration, and this reflection high-amplitude wave is called half-wave.

This device has designed the annulus that two receipts are worn wave detector on tail cone, during take-up, wave detector very fitly is arranged in together, is convenient to next unwrapping wire.Maglev type half-wave detector provided by the utility model also can be used for the detection and the prevention of earthquake.

Claims (2)

1. novel seismic sensor is characterized in that: it is by copper shell 3, toroidal winding and 5, two O type cylindrical magnets 4,7 of aluminium cover, and copper rod slide rail 6, copper lid 2,8, positive and negative terminal 10, wave detector plastic casing 1 and tail cone 9 are formed up and down; Described two O type cylindrical magnet 4,7 homopolarities are relative, are nested with on copper rod slide rail 6, and together place toroidal winding aluminium cover 5; The O type cylindrical magnet 7 that is positioned at the bottom is fixed magnets, and superposed O type right cylinder 4 suspends at an upper portion thereof by the repulsion of lower magnet 7; The outside at toroidal winding aluminium cover 5 is that one deck comprises: the housing of copper lid 2,8 and copper shell 3 up and down; Draw the positive and negative terminal of two toroidal windings on bottom end cover 8, this device outermost layer is a plastics protecting sheathing 1, is flat mouthful of reversed acanthoid tail cone 9 in plastics protecting sheathing 1 lower end.

2. novel seismic sensor as claimed in claim 1 is characterized in that described two O type cylindrical magnet like pole N are extremely relative.

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