CN105911598A - Signal receiver for natural electric field detection - Google Patents
Signal receiver for natural electric field detection Download PDFInfo
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- CN105911598A CN105911598A CN201610482892.2A CN201610482892A CN105911598A CN 105911598 A CN105911598 A CN 105911598A CN 201610482892 A CN201610482892 A CN 201610482892A CN 105911598 A CN105911598 A CN 105911598A
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/088—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices operating with electric fields
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Abstract
The invention discloses a signal receiver for natural electric field detection. The signal receiver comprises a detection probe I and a detection connector II, wherein the detection probe I comprises a detection rod 1 and a detection rod joint 2; and the detection connector II connected with a detection cable 5 comprises a detection connector 3 and a signal receiving circuit 4. The signal receiver is used for receiving a characteristic signal which is generated when a natural electric field is diffused in the stratum and encounters a special geologic body, and the natural electric field signal is received by the detection rod 1, is conducted to the signal receiving circuit 4 in the detection connector 3 through the detection rod joint 2, is regulated by the signal receiving circuit 4 and then is transmitted to a signal collecting device through the detection cable 5. The inserting operation of the detection probe I and the detection connector II is simple and convenient, the connection is firm and reliable, and the connection state and the signal transmission property can be detected, so that the reliability and precision of signal detection of the natural electric field can be ensured, and the special environment requirements for geological prospecting operation on the field are met.
Description
Technical field
Patent of the present invention belongs to the special detection device that geology geophysical prospecting equipment field is supporting, particularly to natural electric field detection signal receiver.
Background technology
In geophysics detection, the detection of mine geology disaster and groundwater exploration field, for research and analysis stratum geological structure, find out the distribution situation of underground water source, Goaf Area and special geobody.Various detection method and instrument and equipment are widely used, such as geological radar, electrical method detection, very low frequency rate detection method and natural electric field detection method etc..Wherein natural electric field detection method have that detection efficiency is high, can scan continuously, low cost and other advantages, there is compared with other geophysical prospecting method exploration efficiency simultaneously high, accuracy rate is high, the advantage strong to subsoil water and special geobody identification ability.
And concrete relevant natural electric field geophysical prospecting method and instrument kind are also a lot, such as: audiomagnetotelluric sounding method, magnetotelluric sounding method, controlled-source audiomagnetotellurics sounding method etc..These detection methods and instrument all pass through to gather electric field signal natively, and the biggest ground natural electric field signal, by storing the natural electric field signal collected.And then use correlated digital signals processing method to analyze distribution situation and the Changing Pattern of natural electric field apparent resistivity, carry out infrastructure back analysis and the damage forecasting etc. of earth formation.
The first step carrying out above-mentioned detection analysis is to pick up natural electric field signal by related detection devices, transmits it to data acquisition instrument.Therefore, electric field signal receiving device is that very the key link, its quality receiving signal performance and join operation are the most reliable, directly determines the correctness of gathered natural electric field signal.Tradition natural electric field signal receiver uses unpolarizable electrode mostly, will be placed in the biscuiting porcelain jar filling copper/saturated copper sulphate solution by red copper bar, and red copper bar is that the ion of the copper-bath by being permeated by biscuiting porcelain jar conducts electricity.When using at the scene, need to use salt solution to come the ground that moistening unpolarizable electrode is contacted, add extra work and bring inconvenience to detection work.Meanwhile, probe is not very tight with contacting of surface soil, and the convenience degree of its sampling precision and operation is the best.Therefore, the present situation of current natural electric field signal pickup device determines, and needs to develop one and is applicable to the use of geology physical prospecting field work adverse circumstances, and has stronger anti-external electromagnetic field interference, natural electric field signal receiver easy and simple to handle.
Secondly as natural electric field detection is all to detect in the wild, its working environment is the most severe.The vegetation cover situation of detection range and the situation of ground earth, the detection of natural electric field signal all can be had a huge impact by the dust in air etc..Traditional detection rod connector is to detect when bar couples multiple connecting mode, such as BNC connector formula, direct insertion, thread connection and metal elastic chip etc..These connecting modes, the advantage being respectively arranged with self, but in actual geology physical prospecting operation, also expose respective shortcoming.
Such as, BNC connector formula, simple to operate, it is mainly used in the connection of coaxial cable, but during the detection of geology physical prospecting, cable is slightly by External Force Acting, and plug connector is easy for separating, and causes data acquisition to interrupt.The shortcomings such as direct insertion connected mode is that the companies such as a lot of plug connector specialty thunderous not, Ou Du of manufacturer are mass-produced, is used for detecting instrument transmission signal, but when geology physical prospecting field operation, there is structure complicated, expensive.If coupling and considering firmness, thread connecting mode is very firm, but when connecting relatively time-consuming arduously, and the inevitable dust of field work can be carried out in ridge, it will blocking adapter cannot normally work, and even can damage screw thread.The connection of metal elastic chip, solves the problems referred to above, but its operation lifetime was limited by the shell fragment life-span, the most comparatively short, needs often to change.
Furthermore, current all of natural electric field detection receiving device, the most do not possess the function of self coupled situation detection, namely detection accepts the most correct positive connection of device, and operator cannot know.Above-mentioned unpolarizable electrode, when connecting, is only by hinged for the copper core of detection cable, more has no way of detecting natural electric field detection receiving device and detection cable and the coupled situation of detecting instrument.
At present, from the point of view of situation about understanding at the retrieval situation of data of literatures and natural electric field instrument manufacturing manufacturer, a natural electric field signal receiver part is not had to solve above-mentioned problem.Therefore, patent of the present invention conducts a research for this problem.For solving above-mentioned technical problem, patent of the present invention provides natural electric field detection signal receiver.The conductive metallic material using pinnacle makes detection bar, is entirely insertable in the soil on detection earth's surface by detection bar, so can be prevented effectively from the interference to natural electric field signal of the space stray electromagnetic signals during use.Have employed, with coupling of detection rod connector, the mode that a kind of novel rotary chute Interference fit cylinder steady pin fastens at detection bar.Well solve current telluric electricity field detection present in operate not convenient and couple insecure.The testing circuit that the signal receiver of this natural electric field detection simultaneously is carried can complete this detection the most easily.Signal lines is to connect the single-core shielding line of instrument and signal receiver, and heart yearn is for transmitting the natural electric field signal that signal receiver receives, and screen layer is connected with instrument when normal detection with simulating, the transmission detection signal when probe connection status detects.
Summary of the invention
In order to overcome above-mentioned technical problem, patent of the present invention provides a kind of natural electric field detection signal receiver.
Patent of the present invention discloses a kind of natural electric field detection signal receiver, it is made up of detection probe I and detection adapter II two parts, extremely detect adapter II by inserting mode with detection adapter II and conducts both received signals for receiving the detection probe I of natural electric field signal, receive after signal adapter II internal signal after testing receives circuit (4) conditioning by detecting cable (5) transmission to signal pickup assembly.
In patent of the present invention, described detection probe I includes detecting bar (1) and detection knock-off joint (2), detection bar (1) insertion earth's surface is to receive natural electric field signal, and detection knock-off joint (2) is for connecting and conducts both received signals extremely detection adapter II.
In patent of the present invention, described detection bar (1) total length is 160mm, the pinnacle structure (1-1) that its front end turnery processing becomes top angle to be 30 degree and a length of 20mm, pinnacle structure (1-1) is the cylindrical detection shaft (1-2) of a length of 140mm afterwards, to the internal machining internal thread hole (1-3) of detection shaft (1-2) on detection shaft (1-2) rear end face, and in the place of distance end face 5mm thereafter, radially one trip bolt hole (1-4) of processing, trip bolt (1-5) can be screwed in trip bolt hole (1-4).
nullIn patent of the present invention，Described detection knock-off joint (2) is by detection knock-off joint socket (2-1)、Steady pin (2-2)、Public nook closing member (2-3)、Public nook closing member trip bolt (2-4)、Fastening external screw thread (2-5) and rubber ring (2-6) composition，The external diameter of detection knock-off joint socket (2-1) is evenly distributed with 3 steady pins (2-2)，Steady pin (2-2) is diameter 2mm，It it is highly the cylinder of 1mm，Public nook closing member (2-3) is inserted in the centre bore of detection knock-off joint socket (2-1)，Thereafter withstood by public nook closing member trip bolt (2-4) and fix，It is machined with fastening external screw thread (2-5) at the rear portion of detection knock-off joint (2)，It forms threaded engagement with the internal thread hole (1-3) of detection shaft (1-2) rear portion processing，The bottom of detection knock-off joint socket (2-1) is provided with rubber ring (2-6).
In patent of the present invention, described detection adapter II includes for coupling the movable head assembly of detection knock-off joint (2), built-in signal receives female nook closing member assembly of electrically connecting with male nook closing member (2-3) of adapter chamber assembly and cable fixation kit four part of fixed test cable (5) of circuit (4).
In patent of the present invention, described movable head assembly includes swivel joint (3-1), female nook closing member socket (3-2) and open annular spring leaf (3-3), wherein swivel joint (3-1) is by female nook closing member jack assemblies jack (3-1-1), positioning runner (3-1-2) and tightening hole (3-1-3) are combined into an entirety, and the inwall of female nook closing member jack assemblies jack (3-1-1) in edge is spaced with the angle of 120 degree and is uniformly distributed 3 groups, swivel joint (3-1) has ladder interior wall construction (3-1-5), it is machined with spring leaf fixed groove one (3-1-4) in the stage casing of swivel joint (3-1)；Wherein female nook closing member socket (3-2) is fixed bolt ring by female nook closing member assembly jack (3-2-1), spring leaf fixed groove two (3-2-2), female nook closing member and is fixed female thread (3-2-3) and adapter chamber assembly movable head is fixed external screw thread (3-2-4) and formed；Wherein open annular spring leaf (3-3) is made by a piece of elastic metallic spring washer, cuts out an oblique grooving (3-3-1) in the middle.
In patent of the present invention, described adapter chamber assembly includes that rubber sleeve (3-5) and cable wedge shape retainer ring (3-6) are fixed in adapter chamber body (3-4), cable, is wherein machined with female thread joining with movable head assembly (3-4-1) on adapter chamber body (3-4)；Detection long cable section of ingoing line hole (3-5-1) the most all it is machined with during wherein cable fixes rubber sleeve (3-5) and cable wedge shape retainer ring (3-6).
In patent of the present invention, described female nook closing member assembly includes that female nook closing member insulator (3-7), female nook closing member (3-8), female nook closing member insulating top cover (3-9) and female nook closing member fix bolt ring (3-10), wherein female nook closing member insulator (3-7) is processed into the ladder shaft shoulder (3-7-1) with the shaft shoulder, and female nook closing member is fixed and is machined with nook closing member on bolt ring (3-10) and fixes bolt ring external screw thread (3-10-1) and cable welding interface (3-10-2).
In patent of the present invention, described cable fixation kit includes that tail-hood (3-11), cable buttock line fix rubber sleeve (3-12), wherein tail-hood (3-11) inwall is machined with fixing female thread (3-11-1), it may be connected to adapter chamber assembly；Cable buttock line is fixed the center of rubber sleeve (3-12) and is machined with cable entry port (3-12-1).
In patent of the present invention, described signal receiving circuit (4) includes magnetic bead (4-1), diode (4-2), electric capacity (4-3), wherein magnetic bead (4-1) is connected between the heart yearn detecting cable (5) with female nook closing member (3-8), is connected to the screen layer of detection cable (5) and mother's nook closing member is fixed between the cable welding interface (3-10-2) of bolt ring (3-10) after diode (4-2) is in parallel with electric capacity (4-3).
Having the beneficial effects that of patent of the present invention: the earth electric field signal in detecting for natural electric field detects, send the information of detection to detection device by detection cable and carry out Treatment Analysis, the detection components design of novelty, the shortcoming effectively solving tradition natural electric field detection components, there is convenient and reliable operation, capacity of resisting disturbance is strong, it is adaptable to field operation, can complete the detection of natural electric field detection signal receiver connection status and the judgement of signalling channel state quality simultaneously.
Below in conjunction with the accompanying drawings patent of the present invention is further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of patent of the present invention；
Fig. 2 is the structural representation of the detection bar (1) of patent of the present invention；
Fig. 3 is the structural representation of the detection knock-off joint (2) of patent of the present invention；
Fig. 4 is the assembling schematic diagram of detection adapter movable head assembly (a) of patent of the present invention；
Fig. 5 is female nook closing member socket schematic diagram of movable head assembly (a) of patent of the present invention；
Fig. 6 is the rotary joint structure schematic diagram of movable head assembly (a) of patent of the present invention；
Fig. 7 is the open annular chip architecture of the spring schematic diagram of movable head assembly (a) of patent of the present invention；
Fig. 8 is connector cavity assembly (b) structural representation of patent of the present invention；
Fig. 9 is female nook closing member assembly (c) structural representation of patent of the present invention；
Figure 10 is cable fixation kit (d) structural representation of patent of the present invention；
Figure 11 is the signal receiving circuit figure of patent of the present invention.
Detailed description of the invention
With embodiment, patent of the present invention is described further below in conjunction with the accompanying drawings.
See Fig. 1, this natural electric field detection signal receiver, it is made up of detection probe I and detection adapter II two parts, the most specifically can be divided into detection bar (1), detection knock-off joint (2), detection adapter (3), signal receiving circuit (4) and detection (5) five, cable part composition.Include detecting bar (1) and detection knock-off joint (2) for receiving the detection probe I of natural electric field signal, and extremely detect adapter II by inserting mode with detection adapter II and conducts both received signals, receive after signal adapter II internal signal after testing receives circuit (4) conditioning by detecting cable (5) transmission to signal pickup assembly.
This natural electric field detection signal receiver, including detection bar (1), detection knock-off joint (2), detection adapter (3), signal receiving circuit (4) and detection (5) five, cable part composition.This receptor receives when the earth natural electric field is propagated in the earth formation and runs into characteristic signal produced by special geobody or subsoil water.Natural electric field signal is received by detection bar (1), knock-off joint (2) conduction is to the signal receiving circuit (4) detected in adapter (3) after testing, transmits to signal pickup assembly through detection cable (5) after signal receiving circuit is nursed one's health.This patent adapts to the special environment of field work, the advantage with water proof and dust proof, and detection bar is easy and simple to handle with adapter grafting, couples solid and reliable.And connection status and the channel performance of detection bar with adapter can be detected, it is ensured that the reliability of natural electric field signals collecting and acquisition precision.
See Fig. 2, detection bar (1) penetrates different geologic bodies and subsoil water and the multidate information that produces for picking up natural electric field signal, total length is 160mm, a diameter of 10mm, use that cylindrical metal material is machined forms, detect bar (1) preferred material: the hard metal material of the good conductivity such as ferronickel.The pinnacle structure (1-1) of an a length of 20mm is cut, in order to insert in the soil on earth's surface to be detected on its top.Pinnacle structure (1-1) is followed by cylinder detection shaft (1-2) of a length of 140mm, is used for receiving pickup natural electric field signal.It is machined with internal thread hole (1-3) in the right side of detection shaft (1-2), the fastening external screw thread (2-5) that will detect knock-off joint (2) left part screws in the internal thread hole (1-3) that detection shaft (1-2) right part is processed, and can complete to detect bar (1) and couple with the fastening detecting knock-off joint (2).And during being threadably coupled within use repeatedly, it is possible that thread looseness and coming off.In order to improve the firmness of this thread connection further, patent of the present invention, in the place of detection bar (1) distance tail end 5mm, is processed the trip bolt hole (1-4) of a radial direction, wherein can be screwed in trip bolt (1-5).This trip bolt can withstand and the fastening external screw thread (2-5) of destructive test knock-off joint (2) left part, for by fixing with detection knock-off joint (2) for detection bar (1) locking.
Seeing Fig. 3, detection knock-off joint socket (2-1) in detection knock-off joint (2) uses and detects the metal material that bar (1) is identical, is processed into the looping pit of hollow, and its internal diameter is 12mm, and external diameter is 14mm.The external diameter of detection knock-off joint socket (2-1) is evenly distributed with 3 steady pins (2-2), steady pin (2-2) is diameter 2mm, it is highly the cylinder of 1mm, couples for being fixed with movable head assembly (a).Public nook closing member (2-3) a diameter of 2mm in detection knock-off joint (2), is used for transmitting the natural electric field signal that detection bar (1) is picked up, it is therefore desirable to have good electric conductivity, uses fine copper machining.In the centre bore of detection knock-off joint socket (2-1), it is machined with through hole, after through hole, processes one section of female thread.Inserting in this through hole by public affairs nook closing member (2-3), withstood by public nook closing member trip bolt (2-4) thereafter, public nook closing member trip bolt (2-4) and through hole female thread below forms thread connection and fixes public nook closing member (2-3).Left part processing fastening external screw thread (2-5) in detection knock-off joint (2), it forms threaded engagement with the internal thread hole (1-3) detecting the processing of shaft (1-2) right part, thus realizes detecting bar (1) and couple with the firm of detection knock-off joint (2).The bottom of detection knock-off joint socket (2-1) is provided with rubber ring (2-6), when being used for buffering detection adapter (3) insertion, and the impact brought.
In patent of the present invention, described natural electric field detection signal receiver, it is characterised in that described detection adapter (3) is made up of movable head assembly (a), adapter chamber assembly (b), female nook closing member assembly (c), cable fixation kit (d) four part.
See Fig. 4, the installation diagram of movable head assembly (a), visible movable head assembly (a) includes swivel joint (3-1), female nook closing member socket (3-2) and open annular spring leaf (3-3), swivel joint (3-1) uses with female nook closing member socket (3-2) and detects the materials processing that bar (1) is identical.
Seeing Fig. 5, swivel joint (3-1) uses and detects the metal material that bar (1) is identical, processes.See its structure chart, visible swivel joint (3-1) comprises following details: the front portion of swivel joint (3-1) is machined with female nook closing member jack assemblies jack (3-1-1), when swivel joint (3-1) is connected with detection knock-off joint (2), insert detection knock-off joint socket (2-1) wherein.On the end face that swivel joint (3-1) matches with detection knock-off joint socket (2-1) along the circumferential direction, angle is spaced 120 degree and is machined with 3 positioning runners (3-1-2), and chute is made up of the rectangular channel mated with steady pin (2-2) and the spiral chute processed along the inwall of female nook closing member jack assemblies jack (3-1-1).Inwall radial direction female nook closing member jack assemblies jack (3-1-1) in tail end edge of positioning runner (3-1-2) processes the tightening hole (3-1-3) of an a diameter of 3mm, and along the circumferential direction angle is spaced apart 3 tightening holes (3-1-3) of 120 degree of processing.In the stage casing of swivel joint (3-1), there is ladder interior wall construction (3-1-5), for fixing female nook closing member assembly (c).
Positioning runner (3-1-2) and tightening hole (3-1-3) are combined into an assembly, and the inwall along female nook closing member jack assemblies jack (3-1-1) is uniformly distributed 3 groups with the angle interval of 120 degree.When the rectangular channel of 3 steady pins (2-2) alignment positioning runner (3-1-2) on detection knock-off joint (2) outer surface inserts, manual rotation detection knock-off joint (2), then 3 steady pins (2-2) will be slided along arc positioning runner (3-1-2), and insert in tightening hole (3-1-3), thus realize the positive connection detecting knock-off joint (2) with swivel joint (3-1).Opposite direction rotates detection knock-off joint (2), 3 steady pins (2-2) then detecting knock-off joint (2) will be exited along arc positioning runner (3-1-2), thus realize detecting knock-off joint (2) and separate with the easy of swivel joint (3-1).At the postmedian of swivel joint (3-1), the position of distance end face 10mm, within it wall working width is 3mm, and the degree of depth is the spring leaf fixed groove one (3-1-4) of 1mm.
Seeing Fig. 6, female nook closing member socket (3-2) uses and detects the metal material that bar (1) is identical, processes.It is fixed bolt ring by female nook closing member assembly jack (3-2-1), spring leaf fixed groove two (3-2-2), female nook closing member and fixes female thread (3-2-3) and adapter chamber assembly movable head is fixed external screw thread (3-2-4) and formed.Female nook closing member assembly jack (3-2-1) is positioned at the front portion of female nook closing member socket (3-2), is an interior hollow round column hole, wherein inserts female nook closing member assembly (c).At female nook closing member socket (3-2) middle outer radial position, working width is 3mm, and the degree of depth is the spring leaf fixed groove two (3-2-2) of 1mm.The rear end inwall of female nook closing member socket (3-2) is machined with female nook closing member fix bolt ring and fix female thread (3-2-3), carries out thread connection for fixing bolt ring (3-10) with female nook closing member of female nook closing member assembly (c).Outer surface in the rear end of female nook closing member socket (3-2) is machined with adapter chamber assembly movable head and fixes external screw thread (3-2-4), for carrying out thread connection with the female thread (3-4-1) on adapter chamber body (3-4).
Seeing Fig. 7, open annular spring leaf (3-3) is made by a piece of elastic metallic spring washer, cuts out an oblique grooving (3-3-1) in the middle.Female nook closing member socket (3-2) is inserted in female nook closing member jack assemblies jack (3-1-1) of swivel joint (3-1), by both spring leaf fixed groove one (3-1-4) and spring leaf fixed groove two (3-2-2) alignment, then, open annular spring leaf (3-3) is inserted in fixed groove in the annulus between female nook closing member socket (3-2) and swivel joint (3-1), use the pointed tool of tweezers etc, stir oblique grooving (3-3-1), it is plunged in fixed groove, female nook closing member socket (3-2) reliably can be linked together with swivel joint (3-1).And owing to open annular spring leaf (3-3) can rotate in fixed groove, and female nook closing member socket (3-2) can be freely rotatable in swivel joint (3-1).
See Fig. 8, adapter chamber assembly (b), fix rubber sleeve (3-5) and cable wedge shape retainer ring (3-6) including adapter chamber body (3-4), cable.Adapter chamber body (3-4) uses the material machining identical with detecting bar (1) to form, and adapter chamber body (3-4) is internal is cavity structure, is used for placing signal receiving circuit (4).Anterior processing and the joining female thread of movable head assembly (a) (3-4-1) in adapter chamber body (3-4), adapter chamber body (3-4) rear portion is machined with external screw thread joining with tail-hood (3-4-2).Cable is fixed rubber sleeve (3-5) and is used elastic good elastomeric material injection to manufacture, and cable is fixed the center of rubber sleeve (3-5) and is machined with detection long cable section of ingoing line hole (3-5-1).Right side and adapter chamber body (3-4) plane contact of rubber sleeve (3-5) fixed by cable, and the processing of its right-hand member is angled the sphenoid of 20 degree, for matching with cable wedge shape retainer ring (3-6) with same shape.Cable wedge shape retainer ring (3-6) use aluminum alloy materials manufacture, its inner surface be angle be the wedged hole of 20 degree, the sphenoid that size fixes rubber sleeve (3-5) with cable is consistent.
Seeing Fig. 9, female nook closing member assembly (c) includes that female nook closing member insulator (3-7), female nook closing member (3-8), female nook closing member insulating top cover (3-9) and female nook closing member fix bolt ring (3-10).Wherein female nook closing member insulator (3-7) uses high-strength insulating plastics to manufacture with female nook closing member insulating top cover (3-9), ensures the good electrical isolation of receiver casing and heart yearn during signal receiver uses.Female nook closing member insulator (3-7) is processed into the ladder shaft shoulder (3-7-1) with the shaft shoulder, when female nook closing member assembly (c) inserts female nook closing member jack assemblies jack (3-1-1), this ladder shaft shoulder (3-7-1) can contact with the ladder interior wall construction (3-1-5) of swivel joint (3-1), it is ensured that the location of female nook closing member assembly (c) is with fixing.Female nook closing member insulating top cover (3-9) is arranged on the right of female nook closing member insulator (3-7), withstands female nook closing member insulator (3-7), is fixed bolt ring (3-10) by female nook closing member thereafter and withstand fixing.The center of female nook closing member insulator (3-7) and female nook closing member insulating top cover (3-9) has the central through hole of a diameter of 3mm, is used for installing female nook closing member (3-8).It is fine copper that female nook closing member (3-8) and female nook closing member fix bolt ring (3-10) material.Female nook closing member (3-8) be an internal diameter be 3mm, wall thickness is the cylinder barrel shaped of 1mm, inserts in the central through hole of female nook closing member insulator (3-7) and mother's nook closing member insulating top cover (3-9).Female nook closing member fix bolt ring (3-10) be wall thickness be the cylinder annulus of 2mm, it is machined with nook closing member on its inner diameter and fixes bolt ring external screw thread (3-10-1), fix female thread (3-2-3) formation thread connection for fixing bolt ring with female nook closing member, and fix female nook closing member insulator (3-7) and female nook closing member insulating top cover (3-9).Female nook closing member is fixed and is machined with nook closing member on bolt ring (3-10) and fixes bolt ring external screw thread (3-10-1) and cable welding interface (3-10-2), and cable welding interface (3-10-2) is for welding mutually with the shielding line detecting cable (5).
Seeing Figure 10, cable fixation kit (d) includes, tail-hood (3-11) and cable buttock line fix rubber sleeve (3-12).Tail-hood (3-11) uses and detects the metal material manufacture that bar (1) is identical, its left end inwall is machined with fixing female thread (3-11-1), may be coupled on the external screw thread (3-4-2) at adapter chamber body (3-4) rear portion, thus realize coupling of cable fixation kit (d) and adapter chamber assembly (b).Cable buttock line is fixed rubber sleeve (3-12) and is used and fix the rubber manufacture of rubber sleeve (3-5) identical material with cable, and centre has cable entry port (3-12-1).
See Figure 11, in patent of the present invention, described natural electric field detection signal receiver, it is characterized in that described signal receiving circuit (4), including magnetic bead (4-1), diode (4-2), electric capacity (4-3), magnetic bead can be equivalent to the cascaded structure of resistance R and inductance L on circuit.This circuit is placed in adapter chamber body (3-4), and is sealed by this inside cavity filling epoxy resin fixing.
Detection bar (1) is connected into an overall signal receiver assembly by detection knock-off joint (2) and detection adapter (3), and according to lower link order: male nook closing member (2-3) to female nook closing member assembly jack (3-2-1) forms branch road and is connected to the A node of signal receiving circuit (4), and detection bar (1) to detection knock-off joint (2) and detection adapter (3) are arrived mother's nook closing member again and fixed bolt ring and fix female thread (3-2-3) formation branch road and be connected to the B node of signal receiving circuit (4)；The heart yearn of detection cable (5) is connected to the C node of signal receiving circuit (4), the shielding line of detection cable (5) is connected to the D node of signal receiving circuit (4), being serially connected with after diode is in parallel with electric capacity between the A node of signal receiving circuit (4) and the C node of signal receiving circuit (4), magnetic bead is connected between the B node of signal receiving circuit (4) and the D node of signal receiving circuit (4).
When detecting knock-off joint and inserting detection adapter, it is short-circuit for fixing bolt ring (3-10) with detection bar body due to female nook closing member, can realize A node and the B node short circuit of signal receiving circuit (4).
In patent of the present invention, detection cable (5) is the single-core shielding line connecting signal receiver with detecting instrument, cable core for transmitting the natural electric field signal that signal receiver receives, cable shield when normal detection with the simulation of detecting instrument be connected, transmit when natural electric field detection signal receiver connection status detect and detect signal.
Claims (10)
1. a natural electric field detection signal receiver, it is characterized in that being made up of detection probe I and detection adapter II two parts, extremely detect adapter II by inserting mode with detection adapter II and conducts both received signals for receiving the detection probe I of natural electric field signal, receive after signal adapter II internal signal after testing receives circuit (4) conditioning by detecting cable (5) transmission to signal pickup assembly.
Natural electric field detection signal receiver the most according to claim 1, it is characterized in that described detection probe I includes detecting bar (1) and detection knock-off joint (2), detection bar (1) insertion earth's surface is to receive natural electric field signal, and detection knock-off joint (2) is for connecting and conducts both received signals extremely detection adapter II.
Natural electric field detection signal receiver the most according to claim 2, it is characterized in that described detection bar (1) total length is 160mm, the pinnacle structure (1-1) that its front end turnery processing becomes top angle to be 30 degree and a length of 20mm, pinnacle structure (1-1) is the cylindrical detection shaft (1-2) of a length of 140mm afterwards, to the internal machining internal thread hole (1-3) of detection shaft (1-2) on detection shaft (1-2) rear end face, and in the place of distance end face 5mm thereafter, radially one trip bolt hole (1-4) of processing, trip bolt (1-5) can be screwed in trip bolt hole (1-4).
nullNatural electric field detection signal receiver the most according to claim 2，It is characterized in that described detection knock-off joint (2) is by detection knock-off joint socket (2-1)、Steady pin (2-2)、Public nook closing member (2-3)、Public nook closing member trip bolt (2-4)、Fastening external screw thread (2-5) and rubber ring (2-6) composition，The external diameter of detection knock-off joint socket (2-1) is evenly distributed with 3 steady pins (2-2)，Steady pin (2-2) is diameter 2mm，It it is highly the cylinder of 1mm，Public nook closing member (2-3) is inserted in the centre bore of detection knock-off joint socket (2-1)，Thereafter withstood by public nook closing member trip bolt (2-4) and fix，It is machined with fastening external screw thread (2-5) at the rear portion of detection knock-off joint (2)，It forms threaded engagement with the internal thread hole (1-3) of detection shaft (1-2) rear portion processing，The bottom of detection knock-off joint socket (2-1) is provided with rubber ring (2-6).
Natural electric field detection signal receiver the most according to claim 1, it is characterised in that described detection adapter II includes for coupling the movable head assembly of detection knock-off joint (2), built-in signal receives female nook closing member assembly of electrically connecting with male nook closing member (2-3) of adapter chamber assembly and cable fixation kit four part of fixed test cable (5) of circuit (4).
Natural electric field detection signal receiver the most according to claim 5, it is characterized in that described movable head assembly includes swivel joint (3-1), female nook closing member socket (3-2) and open annular spring leaf (3-3), wherein swivel joint (3-1) is by female nook closing member jack assemblies jack (3-1-1), positioning runner (3-1-2) and tightening hole (3-1-3) are combined into an entirety, and the inwall of female nook closing member jack assemblies jack (3-1-1) in edge is spaced with the angle of 120 degree and is uniformly distributed 3 groups, swivel joint (3-1) has ladder interior wall construction (3-1-5), it is machined with spring leaf fixed groove one (3-1-4) in the stage casing of swivel joint (3-1)；Wherein female nook closing member socket (3-2) is fixed bolt ring by female nook closing member assembly jack (3-2-1), spring leaf fixed groove two (3-2-2), female nook closing member and is fixed female thread (3-2-3) and adapter chamber assembly movable head is fixed external screw thread (3-2-4) and formed；Wherein open annular spring leaf (3-3) is made by a piece of elastic metallic spring washer, cuts out an oblique grooving (3-3-1) in the middle.
Natural electric field detection signal receiver the most according to claim 5, it is characterized in that described adapter chamber assembly includes that rubber sleeve (3-5) and cable wedge shape retainer ring (3-6) are fixed in adapter chamber body (3-4), cable, wherein on adapter chamber body (3-4), be machined with female thread joining with movable head assembly (3-4-1)；Detection long cable section of ingoing line hole (3-5-1) the most all it is machined with during wherein cable fixes rubber sleeve (3-5) and cable wedge shape retainer ring (3-6).
Natural electric field detection signal receiver the most according to claim 5, it is characterized in that described female nook closing member assembly includes that female nook closing member insulator (3-7), female nook closing member (3-8), female nook closing member insulating top cover (3-9) and female nook closing member fix bolt ring (3-10), wherein female nook closing member insulator (3-7) is processed into the ladder shaft shoulder (3-7-1) with the shaft shoulder, and female nook closing member is fixed and is machined with nook closing member on bolt ring (3-10) and fixes bolt ring external screw thread (3-10-1) and cable welding interface (3-10-2).
Natural electric field detection signal receiver the most according to claim 5, it is characterized in that described cable fixation kit includes that tail-hood (3-11), cable buttock line fix rubber sleeve (3-12), wherein tail-hood (3-11) inwall is machined with fixing female thread (3-11-1), it may be connected to adapter chamber assembly；Cable buttock line is fixed the center of rubber sleeve (3-12) and is machined with cable entry port (3-12-1).
Natural electric field detection signal receiver the most according to claim 1, it is characterized in that described signal receiving circuit (4) includes magnetic bead (4-1), diode (4-2), electric capacity (4-3), wherein magnetic bead (4-1) is connected between the heart yearn detecting cable (5) with female nook closing member (3-8), is connected to the screen layer of detection cable (5) and mother's nook closing member is fixed between the cable welding interface (3-10-2) of bolt ring (3-10) after diode (4-2) is in parallel with electric capacity (4-3).
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| CN105911598B (en) | 2018-06-26 |
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