CN206114924U - Underground metal pipeline detection system - Google Patents
Underground metal pipeline detection system Download PDFInfo
- Publication number
- CN206114924U CN206114924U CN201621187236.1U CN201621187236U CN206114924U CN 206114924 U CN206114924 U CN 206114924U CN 201621187236 U CN201621187236 U CN 201621187236U CN 206114924 U CN206114924 U CN 206114924U
- Authority
- CN
- China
- Prior art keywords
- probe
- underground
- detection system
- metal pipes
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses an underground metal pipeline detection system, including the high pressure signal generator, signal receiver and main control unit, the high pressure signal generator is including the boost circuit who connects gradually, negative high voltage generator, combination condenser and discharge switch, boost circuit's input termination input voltage, the output of discharge switch links to each other with secret metal pipeline through the cable, boost circuit, combination condenser and discharge switch link to each other with main control unit respectively, signal receiver includes a plurality of probes, multiple selector and signal conditioning circuit, all needle implant earth's surfaces, the output of every probe is continuous with certain way input of multiple selector respectively, the output of multiple selector links to each other with main control unit through signal conditioning circuit. Make the potential distribution condition such as the secret electric potential field that forms, signal receiver measurement electric field through the high pressure signal generator, obtain the metal pipeline position. The utility model overcomes current electromagnetic propagation method reliability is poor, the investigation depth is limited, precision low grade defect.
Description
Technical field
This utility model type belongs to subsurface investigation technical field, more particularly to a kind of underground metal pipes detection system.
Background technology
Underground metal pipes detection is widely used in urban infrastructure construction and chemical engineering industry construction, understands buried pipe
The distribution situation of line is the necessary preparation before city, the important step of plant location programming and construction.In recent years, underground utilities are damaged
Accident continuously emerges.
Existing underground piping detection mode mainly uses electromagnetic propagation method, around the metallic conduit laid and its
Medium there is physical difference in electromagnetic property, this method using underground piping as signal transmitting antenna, by transmitter
Specific electromagnetic wave signal is sent to underground piping, earth's surface is passed through as the underground piping formation electromagnetic wave of antenna, in pipeline just
The electromagnetic wave signal of top is most strong, and with the increase of monitoring point and pipeline distance, signal gradually weakens.This survey meter can be compared with
Effectively to obtain underground utilities distribution situation, but shortcoming is as follows：
1st, need using radio modem technology, transmitter, receiver design are complicated, and high cost, reliability are relative
It is poor；
2nd, electromagnetic wave penetration capacity is limited, and common moist earth's surface is stronger to the absorbability of radio wave energy, can visit
Depth measurement degree is limited；
3rd, complex operation, needs special training before detection, very high to the quality and skill requirement of operator；
4th, electromagnetic wave radiant intensity is influenced by many factors, causes detection accuracy relatively low.
Utility model content
In order to solve the technical problem that above-mentioned background technology is proposed, this utility model aims to provide a kind of underground metal pipes
Detection system, when overcoming existing electromagnetic propagation method Underground pipeline, system complex, reliability be poor, investigation depth it is limited with
And the low defect of detection accuracy.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is：
A kind of underground metal pipes detection system, including High-voltage Signal Generator, signal receiver and master controller, it is described
High-voltage Signal Generator includes booster circuit, negative high-voltage generator, combined capacitor and the discharge switch being sequentially connected, the liter
The input termination input voltage of volt circuit, the outfan Jing cables of discharge switch are connected with underground metal pipes, booster circuit, group
Close capacitor and discharge switch to be connected with master controller respectively, the signal receiver include some probes, MUX and
All probes are inserted earth's surface, the outfan of each probe certain road input respectively with MUX by signal conditioning circuit
It is connected, the outfan Jing signal conditioning circuits of MUX are connected with master controller；High tension generator is to underground metal pipes
Conveying high-pressure electricity, so as to form electric potential field in underground, between each probe of MUX scan round and underground metal pipes
Electric potential difference, and send master controller after the Filtering Processing of signal conditioning circuit to, master controller is according to the signal for receiving
Result of detection is obtained, and adjusts the working condition of booster circuit, combined capacitor and discharge switch.
Based on the preferred version of above-mentioned technical proposal, the length of all probes is identical, and all probes insert the depth of earth's surface
It is identical, and the spacing between probe and probe is equal.
Based on the preferred version of above-mentioned technical proposal, the depth of all probe insertion earth's surfaces is 20-30 centimetre.
Based on the preferred version of above-mentioned technical proposal, the spacing between probe and probe is the underground metal pipes institute of prediction
2-3 times of buried depth degree.
Based on the preferred version of above-mentioned technical proposal, the MUX and signal conditioning circuit are placed in inside the shell, should
The material of shell is using ceramics or plastics, and the tip of probe adopts conducting metal.
Based on the preferred version of above-mentioned technical proposal, the booster circuit includes self coupling actuator and multi gear transformator, from
The input termination input voltage of coupling actuator, the outfan of self coupling actuator connect the input of multi gear transformator, multi gear transformation
The outfan connection negative high-voltage generator of device.
Based on the preferred version of above-mentioned technical proposal, the High-voltage Signal Generator also includes earthing detection unit and input
Switch, the two ends of the input switch connect input voltage and booster circuit, the control end connection earthing detection of input switch respectively
Unit, when earthing detection unit detects High-voltage Signal Generator, and earth fault occurs, input switch disconnects.
Based on the preferred version of above-mentioned technical proposal, the combined capacitor includes some electric capacity, leads between these electric capacity
Cross some switches and realize serial or parallel connection, these are switched on-off by main controller controls.
Based on the preferred version of above-mentioned technical proposal, the master controller adopts C8051F347 chips.
The beneficial effect brought using above-mentioned technical proposal：
This utility model is powered to underground metal pipes by High-voltage Signal Generator, using underground piping as high-tension electricity
Pole, is made to form electric potential difference between pipeline and the earth, the electric field isoelectric level distribution situation is measured by signal receiver, and
Position of the place metal pipe line in underground is calculated accordingly.
Advantage of the present utility model is as follows：
1st, this utility model need not use radio modem technology, and system structure is simple, low cost, reliability
It is high；
2nd, this utility model improves electric potential difference by controlling High-voltage Signal Generator, and conveniently adjusted investigation depth is supported
Detection to deep-buried pipeline；
3rd, this utility model is simple to operate, and special training is not needed before detection, the quality and skill requirement phase to operator
To relatively low.
Description of the drawings
Fig. 1 is overall schematic of the present utility model；
Fig. 2 is the schematic diagram of signal receiver in this utility model；
Fig. 3 is the schematic diagram of this utility model mesohigh signal generator.
Specific embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
As shown in figure 1, a kind of underground metal pipes detection system, including High-voltage Signal Generator, signal receiver and master
Controller, is powered to underground metal pipes by High-voltage Signal Generator, using underground piping as high-field electrode, make pipeline with it is big
Electric potential difference is formed between ground, the electric field isoelectric level distribution situation is measured by signal receiver, and is calculated institute accordingly
Metal pipe line underground position.
As shown in Fig. 2 signal receiver includes some probes, MUX and signal conditioning circuit, by all probes
Insertion earth's surface, the outfan of each probe are connected with certain road input of MUX respectively, the outfan of MUX
Jing signal conditioning circuits are connected with master controller.
The length of all probes is identical, and it is identical to insert the depth of earth's surface, depth typically between 20-30 centimetre, especially
Dry soil should moderately increase depth of probe.Between each probe, standoff distance should be equal, and between probe, distance is with burying pipe
The predetermined depth in road is deepened and is increased, and probe spacing should be 2-3 times of the pipe laying depth of prediction.By accessing high voltage electric field,
Electric field, the electric potential difference (U1 between each probe of MUX scan round and pipeline are produced between pipeline and probe>U2>
U3>U4), signal filtering is realized by signal conditioning circuit, the characteristic signal in gather information is amplified, while suppressing other to believe
Interference number to useful signal, master controller calculate probe and pipeline according to the difference of electrical conductivity between pipeline and different probe
The distance between.The relation of electric potential difference, electrical conductivity and pipeline distance isWherein U is the potential between probe and pipeline
Difference, d are the distance between probe and pipeline, and e is the specific conductance of pipeline soil, and adjustment factor α can be according to soil moisture
Degree and amount of ions, rule of thumb select in certain scope, such as between 0.03-0.77.Probe directly over pipeline
(i.e. with pipeline distance most short probe) is minimum with the electric potential difference of pipeline, with the increase of monitoring point and pipeline distance, potential by
It is cumulative big.
In the present embodiment, MUX and signal conditioning circuit are placed in inside the shell, and the material of the shell is using high electricity
Resistance material, such as ceramics or plastics, and the tip of probe adopts conducting metal.
As shown in figure 3, High-voltage Signal Generator include being sequentially connected booster circuit, negative high-voltage generator, combination capacitor
Device and discharge switch, the input termination input voltage of the booster circuit, the outfan Jing cables of discharge switch and underground metalliferous
Pipeline is connected, and booster circuit, combined capacitor and discharge switch are connected with master controller respectively.
In the present embodiment, booster circuit includes self coupling actuator and multi gear transformator, the input termination of self coupling actuator
Input voltage, the outfan of self coupling actuator connect the input of multi gear transformator, the negative height of outfan connection of multi gear transformator
Pressure generator.
In the present embodiment, High-voltage Signal Generator also includes earthing detection unit and input switch, the input switch
Two ends connect input voltage and booster circuit respectively, the control end connection earthing detection unit of input switch, when earthing detection list
When unit detects High-voltage Signal Generator generation earth fault, input switch disconnects.
In the present embodiment, combined capacitor includes some electric capacity, realizes series connection by some switches between these electric capacity
Or it is in parallel, these are switched on-off by main controller controls.
When master controller detects the weak output signal or shakiness of signal receiver collection, it is difficult to when being positioned, main control
The clearance state of device control multi gear transformer boost gear, the capacity of combined capacitor and discharge switch, so that high pressure letter
Number generator produces the output signal of specific amplitude and waveform, is conducive to accurately detecting metallic conduit.
Above example is only to illustrate technological thought of the present utility model, it is impossible to limit protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme each falls within this reality
Within the scope of novel protected.
Claims (9)
1. a kind of underground metal pipes detection system, it is characterised in that：Including High-voltage Signal Generator, signal receiver and master control
Device processed, the High-voltage Signal Generator include that the booster circuit being sequentially connected, negative high-voltage generator, combined capacitor and electric discharge are opened
Close, the input termination input voltage of the booster circuit, the outfan Jing cables of discharge switch are connected with underground metal pipes, are risen
Volt circuit, combined capacitor and discharge switch are connected with master controller respectively, and the signal receiver includes some probes, multichannel
All probes are inserted earth's surface by selector and signal conditioning circuit, the outfan of each probe respectively with MUX certain
Road input is connected, and the outfan Jing signal conditioning circuits of MUX are connected with master controller；High tension generator is to underground
Metallic conduit conveying high-pressure electricity, so as to form electric potential field, each probe of MUX scan round and underground metalliferous pipe in underground
Electric potential difference between road, and send master controller after the Filtering Processing of signal conditioning circuit to, master controller is according to reception
To signal obtain result of detection, and adjust the working condition of booster circuit, combined capacitor and discharge switch.
2. a kind of underground metal pipes detection system according to claim 1, it is characterised in that：All probe insertion earth's surfaces
Depth is identical, and the spacing between probe and probe is equal.
3. a kind of underground metal pipes detection system according to claim 2, it is characterised in that：All probe insertion earth's surfaces
Depth is 20-30 centimetre.
4. a kind of underground metal pipes detection system according to claim 2, it is characterised in that：Between between probe and probe
Away from 2-3 times of the underground metal pipes institute buried depth degree for prediction.
5. a kind of underground metal pipes detection system according to any one in claim 1-4, it is characterised in that：It is described many
Road selector and signal conditioning circuit are placed in inside the shell, and the material of the shell is using ceramics or plastics, and the tip of probe adopts
Conducting metal.
6. a kind of underground metal pipes detection system according to any one in claim 1-4, it is characterised in that：The liter
Volt circuit includes self coupling actuator and multi gear transformator, the input termination input voltage of self coupling actuator, self coupling actuator it is defeated
Go out the input of end connection multi gear transformator, the outfan connection negative high-voltage generator of multi gear transformator.
7. a kind of underground metal pipes detection system according to any one in claim 1-4, it is characterised in that：The height
Pressure signal generator also includes earthing detection unit and input switch, and the two ends of the input switch connect input voltage and liter respectively
Volt circuit, the control end connection earthing detection unit of input switch, sends out when earthing detection unit detects High-voltage Signal Generator
During raw earth fault, input switch disconnects.
8. a kind of underground metal pipes detection system according to any one in claim 1-4, it is characterised in that：Described group
Close capacitor include some electric capacity, between these electric capacity by it is some switch realize serial or parallel connection, these switch on-off by
Main controller controls.
9. a kind of underground metal pipes detection system according to any one in claim 1-4, it is characterised in that：The master
Controller adopts C8051F347 chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187236.1U CN206114924U (en) | 2016-10-28 | 2016-10-28 | Underground metal pipeline detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187236.1U CN206114924U (en) | 2016-10-28 | 2016-10-28 | Underground metal pipeline detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114924U true CN206114924U (en) | 2017-04-19 |
Family
ID=58525396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621187236.1U Expired - Fee Related CN206114924U (en) | 2016-10-28 | 2016-10-28 | Underground metal pipeline detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206114924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353825A (en) * | 2016-10-28 | 2017-01-25 | 南京信息工程大学 | Detection system for underground metallic pipeline |
-
2016
- 2016-10-28 CN CN201621187236.1U patent/CN206114924U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353825A (en) * | 2016-10-28 | 2017-01-25 | 南京信息工程大学 | Detection system for underground metallic pipeline |
| CN106353825B (en) * | 2016-10-28 | 2018-04-03 | 南京信息工程大学 | A kind of underground metal pipes detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104019318B (en) | Long-transportation electromagnetic induction electric heat tracing and oil gas connecting system | |
| CN103135137A (en) | Grounding grid topological structure detection method based on differential method | |
| CN104914313A (en) | Grounding grid fault diagnosis method based on sweep frequency impedance measurement | |
| CN106641741A (en) | Device and method for detecting damaged point of outer wall corrosion-resistant layer of extra-buried deep pipeline | |
| CN103235168A (en) | Measuring system for shunt vectors of metal frames of large ground grids on basis of wireless transmission | |
| CN206114924U (en) | Underground metal pipeline detection system | |
| CN103869206A (en) | Grounding network state detection system for high-frequency pulse inverse scattering imaging | |
| CN104947118A (en) | Flexible anode breakpoint detecting method | |
| CN106353825B (en) | A kind of underground metal pipes detection system | |
| CN104953434A (en) | Design method of novel multi-pin vertical earthing system | |
| CN107728024A (en) | A kind of large-scale grounding network impact characteristics method of testing to be flowed back using earth mat | |
| Robinson et al. | Development of a wireless power transmission system for agriculture sensor devices | |
| Liu et al. | A magnetic detecting and evaluation method of substation’s grounding grids with break and corrosion | |
| CN107589350A (en) | A kind of method for oil-gas pipeline seal performance test | |
| CN113495300B (en) | Underground cable detection method based on charge induction | |
| CN203164267U (en) | Large-scale grounding grid metal framework shunt vector measuring system based on wireless transmission | |
| Jing et al. | Research on earth resistivity measuring and modeling of HVDC deep-well grounding electrode sites | |
| CN206338592U (en) | A kind of device for being used to detect the outer wall anticorrosive coat breaking point of super buried depth underground piping | |
| CN105528493A (en) | Configuring method of current equalizing resistor for direct current grounding electrode | |
| CN110849799A (en) | Device for researching interference of stray current on buried pipeline cathode protection system | |
| CN105305063B (en) | A kind of pipeline radar antenna for electricity channel damage check | |
| CN211741150U (en) | Conduit type ring structure sensor | |
| CN102536216B (en) | Ground simulation test method for emitting and receiving electromagnetic wave wireless measurement while drilling (MWD) signal | |
| CN107203007B (en) | One type cross joint ground wire source transient electromagnetic detecting method | |
| CN101750543A (en) | Ground inherent resistance measuring device using three electrodes for power distribution and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20181028 |