CN207992466U - High sensitivity geophone - Google Patents
High sensitivity geophone Download PDFInfo
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- CN207992466U CN207992466U CN201820408146.3U CN201820408146U CN207992466U CN 207992466 U CN207992466 U CN 207992466U CN 201820408146 U CN201820408146 U CN 201820408146U CN 207992466 U CN207992466 U CN 207992466U
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- spring leaf
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- magnetic boots
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Abstract
The utility model discloses a kind of high sensitivity geophones, including cap assembly, coil block, shell, upper and lower spring leaf, bottom cover, magnetic boots and magnet steel.The spring leaf lines of upper and lower spring leaf is to have three support arms in outer shroud, is evenly distributed on concentric circles, radian meets R16.4 outside supporting cantilever, and inner ring radian meets R12.8；With entity coupling part both ends width W2 and intermediate most thin place width W1 ratios it is 2 between support arm, the ratio between the length L of single support arm and support arm outermost end to the radius R1 in the center of circle are 1.5.Spring leaf lines is two vibration damping arms in inner ring, and damping arm lengths L22 and the radius R2 ratios of shock-absorbing arms outermost end to the center of circle are 2.8, and the coefficient of elasticity of shock-absorbing arms is consistent with the coefficient of elasticity of three support arm of outer shroud.The utility model can solve under mal-condition in the wild can reliable and stable work, the technical problems such as can meet high inclination-angle operation and preferably match with acquisition and recording equipment.
Description
Technical field
The utility model is related to a kind of velocity profile 10Hz seismic wave collecting devices in high sensitivity.
Background technology
In the exploration using conventional string, common seismic road is the comprehensive of all roads of detector array record
Close result.Trace integration improves signal-to-noise ratio by suppressing environmental noise and relevant noise, while prominent signal.Conventional inspection
Wave device string and the relevant organized noise for combining compacting field, but useful signal has also been suppressed while having suppressed noise so that
Seismic frequency declines；Routine has also introduced the phase error of each wave detector in a string while going here and there and combine, reduce signal
Dynamic range increases the distortion factor of seismic wave.Therefore, the data details that conventional Christmas method records is once from firsthand information
Removal, the processing of later stage data have just lacked flexibility.And single wave detector acquisition technique is that a single-geophone receiver point record is former together
Beginning data.And single-point wave detector reception technique can be eliminated effectively because of earthquake caused by topographical elevation difference and near-surface velocity variation
The influence of road signal difference avoids the sampled signal generated by space lack sampling distortion distortion, is conducive to improve earthquake-capturing
The fidelity of signal improves the resolution capability of geologic objective under seismic data, is conducive to the implementation of field statics, and be
Layer description, seismic attributes analysis, seismologic parameter extraction etc. provide the data of high quality.Single wave detector road is initial data, can
Maximum processing flexibility is provided.Full azimuth, large offseting distance and high degree of covering data need to use multiple tracks high density exploration side
Method acquires.
As 3-d seismic exploration required precision is higher and higher, reception channel number is more and more, sampling density is continuously increased, right
In 50,000 or more wired acquisition instrument carry out wide-azimuth, high density, main road number data acquisition in there are cable managements and dimension
Shield is difficult, the limitations such as operating cost height.Untethered, nodal seismic data acquisition system can mitigate system weight, and it is flexible to improve operation
Property, can meet Seismic Operation improves construction efficiency, reduces operating cost requirement, is an important development side of current seismic acquisition
To.In addition the use of land low frequency focus, greatly reduces the cost of multi-fold, makes high-density acquisition, multi-fold sampling
It is possibly realized.
The raising of 3-d seismic exploration precision, to the parameters precision of wave detector, inclination angle performance, the requirement of reliability is also at double
Increase.In field acquisition, to obtain better acquisition data, it is desirable that accomplish that horizontal, honest, coupling is good when geophone arrangement,
This is a great problem that seismic field crew faces, and also makes the key factor of influence Collecting operation efficiency, and for complicated landform, more
It is to be difficult to realize.
Need in this context it is a can meet high inclination-angle construction requirement, dependable performance, long-lived high sensitivity connects
Receiving unit is matching, i.e., a novel 10Hz high sensitivity geophones.
The equipment that high sensitivity geophone is received as seismic data, it is desirable that can reliably working under high inclination-angle, carry
For the comparable sensitivity of output with geophone array, it disclosure satisfy that the requirement of instrument single-geophone receiver, have low distortion, carry
High input signal resolution ratio.The utility model meets requirements above, and can preferably match with acquisition and recording equipment, for section
Point earthquake data acquisition equipment provides reliable true data.
Invention content
The purpose of this utility model is to provide a kind of high sensitivity geophone, with solve being capable of mal-condition in the wild
The lower reliable and stable work of energy can meet high inclination-angle operation, and high sensitivity reaches 85.8V/m/s, and distortion meets Super Geophone mistake
It is true to require, and can preferably match with acquisition and recording equipment, provide reliable true number for nodal seismic data acquisition equipment
According to etc. technical problems.
In order to achieve the above-mentioned object of the invention, technical solution used by the utility model is as follows：
A kind of high sensitivity geophone, including cap assembly 1, sealing ring 2, coil block 3, shell 4, upper and lower spring
Piece 5, clamp spring 6, lower contact chip 7, bottom cover 8, magnetic boots 9, magnet steel 10, compensation ring 11 and insulation spacer 12；Magnetic boots 9 are located on magnet steel 10
Lower both ends, magnet steel 10 are located at hub of a spool position, and compensation ring 11 is cased with outside magnet steel 10, and 10 outside of magnet steel is equipped with shell 4, magnet steel
After 10 magnetize, magnetic loop is formed by magnetic boots 9 and shell 4, as wave detector provides the magnetic system of energy；About 4 shell is distinguished
It is equipped with insulation spacer 12 equipped with cap assembly 1, bottom cover 8, and in junction；Line is equipped between shell 4 and magnet steel 10, magnetic boots 9
Coil assembly 3, coil block 3 are composed from two groups around to opposite coil windings and coil rack, and by being stuck in coil
Two spring leafs 5 support on component 3, is suspended in the magnetic field between magnetic boots 9 and shell 4；Upper and lower spring leaf 5 passes through respectively
Clamp spring 6 is fixed on coil block both ends.The above coil block (3) constitutes spring mass damping vibration system with two spring leafs (5)
System；The extraction enameled wire at coil windings both ends is respectively welded on spring leaf 5 up and down, upper end lead by upper spring leaf 5 via
The out-connecting contact 13 of cap assembly 1 guides to the positive one end of insulator 14；Lower end lead is by lower spring leaf 5, via magnetic boots 9, magnetic
The interior contact chip 15 of steel 10, cap assembly 1 guides to 14 cathode one end of insulator；Lower contact chip 7 is located at spring leaf 5 and bottom cover 8
Between；The spring leaf lines of upper and lower spring leaf 5 is to have three support arms in outer shroud, is evenly distributed on concentric circles, three support arm shapes
Shape size is just the same, is L shape arcs, and be sequentially overlapped, and each outboard end of the support arm is the outer fulcrum of cantilever, each
Inner end is cantilever inner-support, and supporting cantilever outside radian meets R16.4, and inner ring radian meets R12.8；Between support arm with reality
The both ends of body coupling part are thick, intermediate thin, and both ends width W2 is 2 with intermediate most thin place width W1 ratios, the entirety of single support arm
The ratio between length L and support arm outermost end to the radius R1 in the center of circle are 1.5；Spring leaf lines is two open annular reducings in inner ring
And the vibration damping arm of overlaying structure, each vibration damping arm outer end are connect with inside and outside cantilever is formed between another vibration damping arm reducing mutually
Fulcrum, the entirety of shock-absorbing arms
Length L22 and the radius R2 ratios of shock-absorbing arms outermost end to the center of circle are 2.8, and the coefficient of elasticity of shock-absorbing arms will be with outer shroud three
The coefficient of elasticity of support arm is consistent, and the ratio of the width W3 of shock-absorbing arms middle section and three support arms centre position W1 are 0.8.
The draw ratio of magnet steel 10 should meet 0.48, and the length of magnet steel 10 with 9 magnetic conduction face length L6 of magnetic boots than 1.1, lead by magnetic boots
Than 1.14,9 convex platform L5 of magnetic boots is magnetic surface length L6 and 3 center line well width L1 of coil block along the length of L4 ratio under magnetic boots
1.04, coil rack coiling well width L1 are 0.88 with magnetic boots magnetic conduction face width L6 ratios, and the lower edge of 9 convex platform of magnetic boots is away from coiling
Slot upper edge distance L2 is 1.44 with ratio of the magnetic boots lower edge away from winding slot lower edge distance L3.
The utility model compared with prior art, has the following advantages that and effect：
1. the reliability of the rational design of the outer cantilever of spring leaf and the good fit guarantee product of inside and outside cantilever, anti-impact
It is stronger to hit performance.
2. magnetic boots structure design keeps effective magnetic field wider, more uniformly, incrementation parameter is wider, distortion factor smaller.
3. coil rack design keeps the drop performance of product outstanding, life of product is improved.
Description of the drawings
Fig. 1 is the structure sectional view of the utility model.
Fig. 2 is the cap assembly sectional view of the utility model.
Fig. 3 is the damping system sectional view of the utility model.
Fig. 4 is the chip architecture of the spring schematic diagram of the utility model.
Fig. 5 is the incremental analysis figure of the utility model.
Specific implementation mode
A kind of 10Hz high sensitivity geophones described in the utility model, it is shown in Figure 1.Including cap assembly 1, close
Seal 2, coil block 3, shell 4, upper and lower spring leaf 5, clamp spring 6, lower contact chip 7, bottom cover 8, magnetic boots 9, magnet steel 10, compensation ring 11
With insulation spacer 12.Magnetic boots 9 are located at 10 upper and lower ends of magnet steel, and magnet steel 10 is located at hub of a spool position, compensation is cased with outside magnet steel 10
Ring 11,10 outside of magnet steel is equipped with shell 4, after magnet steel 10 magnetizes, forms magnetic loop by magnetic boots 9 and shell 4, as wave detector carries
For the magnetic system of energy；About 4 shell is respectively equipped with cap assembly 1, bottom cover 8, and is equipped with insulation spacer 12 in junction；Outside
Coil block 3 is equipped between shell 4 and magnet steel 10, magnetic boots 9, coil block 3 is from two groups around to opposite coil windings and coil bone
Frame is composed, and two by being stuck on coil block 3 spring leafs 5 support, and are suspended between magnetic boots 9 and shell 4
In magnetic field.Upper and lower spring leaf 5 is fixed on coil block both ends by clamp spring 6 respectively.It is above to constitute spring mass damping vibration system
System.
It is shown in Figure 2.On circuit：The extraction enameled wire at coil windings both ends is respectively welded on spring leaf 5 up and down, on
Lead is held, via the out-connecting contact 13 of cap assembly 1, to guide to the positive one end of insulator 14 by upper spring leaf 5；Lower end lead is logical
Spring leaf 5 is crossed down, (lower contact chip 7 is located between spring leaf 5 and bottom cover 8, is located under lower spring leaf 5 and magnetic boots 9 via magnetic boots 9
Side ensures that lower spring leaf 5 and magnetic boots 9 are closely coupled, forms conducting), the interior contact chip 15 of magnet steel 10, cap assembly 1, guide to absolutely
14 cathode one end of edge；
When static, spring leaf supports coil windings, ensures that coil windings are in equilbrium position, when extraneous vibration, coil around
With magnetic conductive shell relative motion, coil windings cutting magnetic line occur for group, and then form electric current between the positive and negative anodes of wave detector.
The utility model be it is a kind of can meet high inclination-angle operation, high sensitivity reaches 85.8V/m/s, and distortion meets super detection
Device distortion requirement, in the wild under mal-condition can reliable and stable work earthquake-capturing equipment.
High inclination-angle requires product in tilting procedure, and frequency and distortion are without significant change, i.e. elastic system-bullet of the design
Reed possesses the good linearity.When by physical impact, spring leaf can prohibit selling up to ten thousand the reliability and durability product that is mainly reflected in
Secondary fatigue is prepared for the postgraduate qualifying examination, and the variation for being embodied as spring leaf support force and coefficient of elasticity is minimum.To solve above-mentioned requirements, this practicality
The new design linearity better spring leaf lines.Its patterned feature is mainly：
It is shown in Figure 4.
1) there are three support arms in outer shroud, be evenly distributed on concentric circles, three support arm geomeries are just the same, and support
Radian meets R16.4 outside cantilever, and inner ring radian meets R12.8.The both ends that support arm is connect with entity are thick, intermediate thin, both ends
Width W2 is 2 with intermediate most thin place width W1 ratios, the length L of the single support arm and radius R1 of support arm outermost end to the center of circle it
Than being 1.5, both ends slightly increase spring leaf axial direction support force, and intermediate thin, the cantilever of overlength reduces coefficient of elasticity.This design
The nonlinearity of spring leaf is equally reduced, variation of the frequency with inclination angle is greatly improved, while the harmonic wave for reducing this practicality loses
Very.
2) design of two vibration damping arms of interior design, the design no less important of two shock-absorbing arms, shock-absorbing arms can reduce spring
Mechanical damage of piece when by lateral impact forces, rational inner ring can improve the impact resistance of product, improve reliable
Property.It is 2.8 that the design, which requires the radius R2 ratios of damping arm lengths L22 and shock-absorbing arms outermost end to the center of circle, the elasticity system of shock-absorbing arms
Number is consistent with the coefficient of elasticity of three support arm of outer shroud, ensures in wave detector when by lateral or slanting impact, first shape
While change outer shroud support arm is protected to lay down most of momentum, it is desirable that shock-absorbing arms middle section with certain intensity
The ratio of width W3 and three support arms centre position W1 are 0.8.
In Fig. 4,17 be the outer fulcrum of cantilever, and 18 be cantilever inner-support, and 19 be inside and outside cantilever connecting fulcrum.
The utility model high sensitivity reach 85.8V/M/s, therefore, magnet steel 10 use NdFeB material, plating nickel on surface cupro-nickel,
NdFeB material compares the alnico material of conventional art, has higher magnetic energy product, and the squareness of demagnetizing curve is compared with aluminium nickel
Cobalt material is good very much, therefore annular region that can be between magnetic boots 9 and shell 4 forms approaches uniformity, magnetic flux density higher
Magnetic field, for the utility model height output provide energy ensure.
By the study found that the non-linear of not only spring leaf will produce multiple harmonic, the heterogeneity in magnetic field residing for coil
It is same to generate multiple harmonic, especially influence the second harmonic of geophone distortion.To reduce harmonic distortion, meet high inclination-angle work
It is required that the thicker magnetic boots of this practical design, reducing the leakage field at wave detector both ends.It is shown in Figure 3.By changing magnetic boots
Shape, to change the trend of the magnetic line of force, to reduce the non-linear of regional magnetic field residing for coil to the greatest extent.To improve magnet steel
The draw ratio of the utilization rate of performance, magnet steel should meet 0.48, and the length and 9 magnetic conduction face length L6 of magnetic boots of magnet steel 10 are than 1.1, magnetic boots
Than 1.14,9 convex platform L5 of magnetic boots is magnetic conduction face length L6 and 3 center line well width L1 of coil block along the length of L4 ratio under magnetic boots
1.04, the lower edge of 9 convex platform of magnetic boots is away from winding slot upper edge distance L2 and ratio of the magnetic boots lower edge away from winding slot lower edge distance L3
1.44.The relative magnetic field width of the design had been designed with apparent improvement more in the past.Correspondingly, increment (the line of the utility model
Enclose the distortion in different location) it has also significantly widened very much, as shown in figure 4, ensureing that the utility model can adapt to more
Big inclination angle provides a convenient for the construction in field.
The coercivity of neodymium iron boron is very high, reduces the decaying of wave detector magnetic, improves the stability and fatigue resistance of wave detector.
However, neodymium iron boron temperature coefficient is big, to solve this problem, compensation ring 11 is devised outside magnet steel, compensation ring absorbs the magnetic line of force
Ability is inversely proportional with temperature, reduces change in magnetic flux density in the annular region between magnetic boots and shell into you, ensure that wave detector
Electric parameter consistency.
In the design of coil rack：
1) consider that single-point wave detector hangs factors, the utility model such as weight is big, and the momentum being subject to using process is big and adopts
With position limiting structure in the middle part of coil holder anti-dropping capability is improved to improve the reliability of product.In conventional wave detector falling process, line
Frame top and bottom ends are directly collided with head cover, bottom cover, this process be easy to cause jump-ring slot deformation or clamp spring loosens, and then causes to fall
Significant change occurs for the frequency parameter for falling behind wave detector.The utility model takes middle part limit method, in falling process, coil holder top
The collision of bottom end and head cover, bottom cover is converted to the collision of coil holder bosom limited step and magnetic boots lower edge.It effectively reduces and falls
Fall the variable quantity of process frequency.
2) broader increment in order to obtain, the utility model design can structures as shown in Figure 3, it is desirable that coil rack coiling
Well width L1 is 0.88 with magnetic boots magnetic conduction face width L6 ratios, and the lower edge of 9 convex platform of magnetic boots is away from winding slot upper edge distance L2 and magnetic
The ratio of distance L3 of the boots lower edge away from winding slot lower edge is 1.44.
The equipment that the utility model is received as seismic data, can reliably working under high inclination-angle, be subjected to up to ten thousand time and fall
Fall test；It is capable of providing the comparable sensitivity of output with geophone array, meets the requirement of instrument single-geophone receiver；Have
Low distortion improves input signal resolution ratio, and shown in Figure 5, figure middle and upper part curve is the increment of the prior art, and lower curve is
The increment of technical solutions of the utility model.The utility model can preferably match with acquisition and recording equipment, be node earthquake number
Reliable true data are provided according to collecting device.Weight of equipment is greatly alleviated simultaneously, keeps tens thousand of or even millions of roads highly dense
Degree acquisition is possibly realized.
Claims (2)
1. a kind of high sensitivity geophone, including cap assembly (1), sealing ring (2), coil block (3), shell (4), on
Lower spring leaf (5), clamp spring (6), lower contact chip (7), bottom cover (8), magnetic boots (9), magnet steel (10), compensation ring (11) and insulation spacer
(12)；It is characterized in that, magnetic boots (9) are located at magnet steel (10) upper and lower ends, magnet steel (10) is located at hub of a spool position, magnet steel (10)
It is outer to be cased with compensation ring (11), it is equipped with shell (4) outside magnet steel (10), after magnet steel (10) magnetizes, passes through magnetic boots (9) and shell (4)
Magnetic loop is formed, as wave detector provides the magnetic system of energy；Shell (4) is respectively equipped with cap assembly (1), bottom cover (8) up and down,
And it is equipped with insulation spacer (12) in junction；Coil block (3), line are equipped between shell (4) and magnet steel (10), magnetic boots (9)
Coil assembly (3) is composed from two groups around to opposite coil windings and coil rack, and by being stuck on coil block (3)
Two spring leafs (5) support, be suspended in the magnetic field between magnetic boots (9) and shell (4)；Upper and lower spring leaf (5) passes through respectively
Clamp spring (6) is fixed on coil block both ends；The above coil block (3) constitutes spring mass damping vibration with two spring leafs (5)
System；The extraction enameled wire at coil windings both ends is respectively welded on spring leaf (5) up and down, and upper end lead passes through upper spring leaf
(5) via the out-connecting contact (13) of cap assembly (1), the positive one end of insulator (14) is guided to；Lower end lead passes through lower spring leaf
(5), via magnetic boots (9), the interior contact chip (15) of magnet steel (10), cap assembly (1), insulator (14) cathode one end is guided to；Under
Contact chip (7) is located between spring leaf (5) and bottom cover (8)；The spring leaf lines of upper and lower spring leaf (5) is to have three supports in outer shroud
Arm is evenly distributed on concentric circles, and three support arm geomeries are just the same, is L shape arcs, and be sequentially overlapped, the branch
Each outboard end of brace is the outer fulcrum of cantilever, and each inner end is cantilever inner-support, and supporting cantilever outside radian meets
R16.4, inner ring radian meet R12.8；It is thick with the both ends of entity coupling part between support arm, it is intermediate thin, both ends width W2 with
Intermediate most thin place width W1 ratios are 2, and the ratio between the entire length L of single support arm and the radius R1 of support arm outermost end to the center of circle are
1.5；Spring leaf lines in the vibration damping arm that inner ring is two open annular reducings and mutual overlaying structure, each vibration damping arm outer end with
Inside and outside cantilever connecting fulcrum, entire length L22 and the shock-absorbing arms outermost end of shock-absorbing arms are formed between another vibration damping arm reducing
Radius R2 ratios to the center of circle are 2.8, and the coefficient of elasticity of shock-absorbing arms is consistent with the coefficient of elasticity of three support arm of outer shroud, in shock-absorbing arms
Between the ratio of width W3 and position W1 among three support arms of part be 0.8.
2. a kind of high sensitivity geophone according to claim 1, which is characterized in that the draw ratio of magnet steel (10) is answered
Meet 0.48, the length and magnetic boots (9) magnetic conduction face length L6 of magnet steel (10) are than 1.1, magnetic boots magnetic conduction face length L6 and coil block
(3) center line well width L1 is than 1.14, magnetic boots (9) convex platform L5 with along the length ratio of L4 be 1.04 under magnetic boots, coil rack coiling
Well width L1 and magnetic boots magnetic conduction face width L6 ratios are 0.88, the lower edge of magnetic boots (9) convex platform away from winding slot upper edge distance L2 with
The ratio of distance L3 of the magnetic boots lower edge away from winding slot lower edge is 1.44.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408146.3U CN207992466U (en) | 2018-03-26 | 2018-03-26 | High sensitivity geophone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408146.3U CN207992466U (en) | 2018-03-26 | 2018-03-26 | High sensitivity geophone |
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| CN207992466U true CN207992466U (en) | 2018-10-19 |
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ID=63829974
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045421A (en) * | 2019-04-19 | 2019-07-23 | 广东有色工程勘察设计院 | A kind of boulder detection method and its equipment |
-
2018
- 2018-03-26 CN CN201820408146.3U patent/CN207992466U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045421A (en) * | 2019-04-19 | 2019-07-23 | 广东有色工程勘察设计院 | A kind of boulder detection method and its equipment |
| CN110045421B (en) * | 2019-04-19 | 2020-06-30 | 广东有色工程勘察设计院 | Boulder detection method and equipment |
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