CN201144696Y - Drilling oscillatory type permeability coefficient value test device - Google Patents
Drilling oscillatory type permeability coefficient value test device Download PDFInfo
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- CN201144696Y CN201144696Y CNU200820030980XU CN200820030980U CN201144696Y CN 201144696 Y CN201144696 Y CN 201144696Y CN U200820030980X U CNU200820030980X U CN U200820030980XU CN 200820030980 U CN200820030980 U CN 200820030980U CN 201144696 Y CN201144696 Y CN 201144696Y
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Abstract
The utility model relates to a drill-hole oscillating type permeability coefficient acquisition test device. The output/input ports of a sensor system are connected with the input/output ports of a data acquisition system. The data measured by the sensor such as the pressure of medium, temperature and density is transferred the data acquisition system through the output/input ports of the sensor system. The data acquisition system transfers acquisition frequency to the sensor through the input/output ports. The output control port of the data acquisition system is connected with the input control port of a hydraulic head excitation system. The utility model has the advantages that the sampling frequency of test data recorded by host computer can reach 1, 2, 5, 10 Hz; and the utility model can meet the test requirement to carry out oscillation reaction in low K-value stratum (K= 1.0*10<-6>cm/s or 8.6*10<-4>m/d) and in high K-value stratum (K= 2.6*10<-1>cm/s or 2.2*10<2>m/d). By exciting the hydraulic head in the drill-hole arranged in aquifer, the change law with time of the hydraulic head can be measured in real time. By the groundwater dynamics principle, the utility model can carry out the test and process data on site. And the permeability coefficient and thermal conductivity can be got through the calculation on the computer.
Description
Technical field
The utility model relates to boring oscillatory type transmission coefficient value experimental rig, it is by exciting head to change in the boring of arranging in the aquifer, measure head rule over time in real time, utilize the underground water dynamics principle, calculate transmission coefficient in the different aquifer media.Belong to the instrument test technical field.
Background technology
Determining of transmission coefficient is the basis of Evaluation of Groundwater Resources, numerical simulation, development and use, environmental protection and scientific management, obtains by on-the-spot pumping test or packer permeability test usually.
On-the-spot pumping test promptly utilizes pumping equipment (as measuring tank, air compressor and water pump) to produce certain drawdown in wellhole, record wellhole middle water level is delta data in time, and hydraulic theory under the base area (as safe this formula, Qiu Buyi formula etc.) calculates transmission coefficient.
Pumping test longer duration, equipment needed thereby and operating personnel are many, expense is high, place and wellhole are required harsh and very easily the aquifer polluted.During field trial, adopt lining rope to measure dynamic water level, and test starting stage SEA LEVEL VARIATION is exceedingly fast, manual measurement inevitably can cause error, thereby has reduced the reliability of result of calculation more.
Water-pressurizing test method mainly contains single hole packer permeability test method and three sections packer permeability test methods.These test methods all are to be pushed down into the water permeability that the water yield is estimated crack rock by observation constant pressure condition, direct hydrogeological parameter such as calculation permeability coefficient, and information utilization is low.This situation for a change, both at home and abroad many scholars successively proposed some based on the stationary flow theory ask the ginseng formula, but packer permeability test examination section short, last weak point, only under rare occasion, be only stationary flow, thereby the transmission coefficient error of obtaining is bigger.In addition, packer permeability test is all higher to the requirement of place and equipment, and operability is not strong.
Summary of the invention
The purpose of this utility model is intended to measure head rule over time in real time by exciting head to change in the boring of arranging in the aquifer, utilizes the underground water dynamics principle, and the scene calculates transmission coefficient in the different water cut layer medium.
Technical solution of the present utility model: its structure is to comprise head activating system, sensing system and data collecting system three parts, the input of the wherein output of sensing system/go into end and data collecting system/go out to hold corresponding joining; With sensor measurement to pressure, temperature, the density data of medium be transferred to data collecting system by its output/inbound port; Data collecting system is transferred to sensor with frequency acquisition by its output/inbound port; The output control terminal of data collecting system joins with the control input end of head activating system is corresponding; When the force value that collects when data collecting system was identical with the pressure that presets, data collecting system control head activating system release pressure was with provocative test.
Described head activating system, its structure is that reducing valve, air intake valve are housed on the air inlet pipe, seal chamber is inserted in the gas outlet of air intake valve, and borehole pressure display list, cable seal are housed on the seal chamber, on the escape pipe of seal chamber drain tap is housed.
Described sensing system, its structure are by pressure sensor peculiar to vessel, temperature collect module, and data are handled transport module, digital density sensor and shell and constituted.The data output end of pressure sensor wherein peculiar to vessel, temperature collect module and digital density sensor is handled corresponding the joining of input of transport module respectively with data.Described pressure sensor peculiar to vessel is that the pressure signal that will collect inputs to data processing transport module, handle transport module by data and carry out analog-to-digital conversion, force value is transferred to data collecting system, carries out the data storage, for later calculation permeability coefficient provides initial data.
Described temperature collect module and digital density sensor are transferred to data collecting system with the real time temperature of medium and the data of density by data processing transport module, carry out the data storage, provide initial data for calculating the coefficient of heat conduction later on.
Sensing system can be tested the variation of wellhole medium pressure, and the signal that collects is converted to data signal, is sent to data collecting system.Native system is also integrated temperature pick up and digital density sensor, except measuring the variation of pressure in the wellhole, can also measuring media temperature and density.
Described data collecting system, its structure comprise the input port of power supply, main frame, acquisition system data, the output port of acquisition system data, and the data-in port and the acquisition system data-out port of main frame wherein (MSP430) join; The output port of acquisition system data and the data-in port of main frame join.
The function of data collecting system is the signal that pick-up transducers is measured, and this signal is stored memory or storage to being attached thereto the computer equipment that connects.
Advantage of the present utility model: test data record main frame sampling rate reaches 1,2,5,10Hz, satisfies low K value stratum (K value 1.0 * 10
-6Cm/s or 8.6 * 10
-4M/d) and high K value stratum (2.6 * 10
-1Cm/s or 2.2 * 10
2M/d) measurement of generation oscillating reactions needs.Realize on-the-spot test, the in-situ processing data also calculate the transmission coefficient and the coefficient of heat conduction by computer.During use, the user can be installed in the software (data acquisition software) that obtains test data on the notebook computer, realizes on-the-spot real-time testing and record data.Sensing system is except pressure sensor, and also integrated temperature pick up, density sensor are realized a tractor serves several purposes.System bulk is little, and is in light weight, is easy to carry.Whole system can be deposited in suitcase and carry (15kg).Parameter such as water temperature in high-acruracy survey SEA LEVEL VARIATION and the well in a sampling period, the level measuring precision is 3 ‰-5 ‰.Survey data can be by USB flash disk read-write and deletion.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model
The structural representation of accompanying drawing 2 head activating systems
Accompanying drawing 3 is structured flowcharts of sensing system.
Accompanying drawing 4 is structured flowcharts of data collecting system.
Accompanying drawing 5 is control flow charts of data collecting system.
Accompanying drawing 6 is main frame and USB interface flow chart.
The specific embodiment
During work, compressed air enters by air inlet pipe 1, adjusts admission pressure by reducing valve 2, when the pressure in the seal chamber reaches the set pressure value, close air intake valve 3, open drain tap 4 simultaneously and excite head to change, obtain transmission coefficient by this head change calculations.
The function of this system is by certain mode of excitation, as can a certain amount of water of instantaneous extraction, a certain amount of water of instantaneous injection, use in the instantaneous insertion water of columnar object of certain volume or leave the water, utilize air compressor to produce air pressure and in boring, produce certain pressure etc., make head generation oscillation effect in the boring, utilize test macro record head to change pairing force value in time, for calculation permeability coefficient.
When the well inner air pressure increases, horizontal plane descends up to hydraulic pressure " rising " with till air pressure " decline " is when pressure equates.After in case horizontal plane is stable, open relief valve fast, abrupt release the well inner air pressure.Thereby do not have that spray splashes situation under, horizontal plane returns to original position, simultaneously pressure sensor and the data logger variation and time of having write down horizontal plane.The air pressure shock-testing can provide very high-quality data, the interference that these data do not have " noise " or the spray that produces because of the mechanical shock method splashes.
Pressure type fluid level transmitter pressure peculiar to vessel has adopted the oil-filled core body of high performance silicon piezoresistance type pressure to make the presser sensor core, insert special IC and convert the sensor millivolt signal to normal voltage, electric current or frequency signal, and can directly link to each other with computer interface card, control instrument, intelligence instrument or PLC etc., be the crystallization of the processing of diffuse silicon precision optical machinery, temperature-compensating, analog signal processing technology.On silicon chip, adopt the ion injection and make Wheatstone bridge through the laser correction, pressure process acts on and makes diaphragm produce displacement on the isolation diaphragm of sensor, be delivered on the silicon chip by the silicone oil pressure in the bellows, make four resistance of Wheatstone bridge, there are two to diminish because of the stretching resistance, other two because of the compression resistance becomes big, the variation of brachium pontis resistance makes the electric bridge disequilibrium so just produce a voltage output signal that is directly proportional with pressure.The millivolt signal of sensor becomes 4～20mA signal output of industrial standard through the integrated amplifier treatment conversion.Pressure type fluid level transmitter volume peculiar to vessel is little, in light weight, the precision height, and the reliable and stable silicon pressure drag chip of good stability makes temperature drift within its highest accuracy rating by temperature correction, and long-time stability are good, thereby reduced maintenance workload.Circuit is reliable, response speed is fast, adopted advanced diaphragm/oil-filled isolation technology, oil-filled amount is minimum to have guaranteed good pressure propagation function, improved the ability of resisting limit breakdown pressure, simultaneously also improved etch-proof ability, utilized the macromolecule sieve to solve the problem of transmitter internal condensation well, improved the life-span that transmitter uses in high humidity environment.Internal circuit has anti-tampering design, and lead is provided with screen layer.Pressure type fluid level transmitter peculiar to vessel is encapsulated in the oil-filled core body of OEM in the Stainless Steel Shell.The front end sheath plays the protection sensor diaphragm, also can make liquid touch diaphragm glibly; Water proof wire is connected with body seal; Ventilating pipe is connected with the external world in cable; The anti-condensation of inner macromolecule sieve; The built-in miniature signal processing circuit can be carried out remote transmission, has good stable and reliability.
Described temperature collect module and digital density sensor are transferred to data collecting system with the real time temperature of medium and the data of density by data processing transport module, carry out the data storage, provide initial data for calculating the coefficient of heat conduction later on.
Digital density sensor (having now) comprises that liquid density transmitter and signal amplify and analog to digital conversion circuit, realizes the millivolt signal of sensor is become the output of RS485 signal through the integrated amplifier treatment conversion.
Temperature collect module adopts DS18B20 (digital temperature sensor), its chip itself has command set and memory, microprocessor is by sending control command, chip memory is read and write, finish temperature survey, can be discerned automatically with simple program, be saved the logic circuit that a large amount of lead-in wires and control channel are switched.Use DS18B20 to need not prior demarcation, need not peripheral cell, amplifier and A/D converter also all are removed.
Internal counter is to the step-by-step counting of the oscillator of a temperature influence, and the pulse of oscillator can be passed through gate circuit during low temperature, and when arrive a certain when high temperature is set the pulse of oscillator can't pass through gate circuit.Value when counter is set to one 55 ℃, if counter reached before 0, gate circuit is not closed, and then the value of temperature register will increase, and this expression Current Temperatures is higher than one 55 ℃.Simultaneously, counter reset is on current temperature value, and circuit compensates the temperature coefficient of oscillator, and counter restarts counting up to returning zero.If gate circuit is not still closed, then repeat above process.Temperature transition takes asks and is no more than 750ms, the figure place of the temperature value that obtains is different because of resolution ratio, the data communication of DS18B20 digital temperature sensor and single-chip microcomputer: when single-chip microcomputer and DS18B20 communicate by single line, single-chip microcomputer must at first send of such 5 ROM order, and these 5 orders are respectively: read ROM, mate ROM, search ROM, skip ROM, reporting to the police searches.Single-chip microcomputer makes it reset in read-write earlier before the DS18B20, detect its answer signal after, microprocessor is sent out the ROM operational order, then, sends out control command again.There is a control command indication DS18B20 to carry out temperature survey.Measurement result will leave in the internal memory of DS18B0, can be read out when running into the rdma read order.
Data are handled transport module (data acquisition and sending module) and are adopted MSP430F149 single-chip microcomputer, DS18B20 digital temperature sensor and RS-485 communication interface and corresponding support circuit and device to form.
MCU in real time sends to data monitoring, demonstration and control primary module with data such as corresponding pressure, temperature and density by the RS-485 interface by real-time sampling and processing to respective sensor and transmitter.This module has operation indication and self-checking function simultaneously.
The pressure type fluid level transmitter realizes the millivolt signal of sensor is become through the integrated amplifier treatment conversion 4～20mA signal output of industrial standard.It is little, in light weight that selected pressure type fluid level transmitter should have a volume, precision height, characteristics such as good stability.
Sensing system can be tested the variation of wellhole medium pressure, and the signal that collects is converted to data signal, is sent to data collecting system.Native system is also integrated temperature pick up and digital density sensor, except measuring the variation of pressure in the wellhole, can also measuring media temperature and density.
The function of data collecting system is the signal that pick-up transducers is measured, and this signal is stored memory or storage to being attached thereto the computer equipment that connects.The data collecting system main frame mainly (is used for the low-power consumption transceiver that RS-485 communicates by letter, has a driver and a receiver in the device with MAX485 by the data collection processor that MSP430 chip (mixed-signal processors of 16 super low-power consumptions) constitutes.Can reduce EMI, and reduce the reflection that is caused by inappropriate terminal coupling cable, the driver Slew Rate of MAX485 is unrestricted, realizes the transfer rate of the highest 2.5Mbps), data transmission circuit constitutes.
The data collecting system main frame comprises the next show from MCU and upper main MCU and real-time clock, usb communication plate, iic bus, keyboard, LCD etc.Slave computer is from MCU is arranged in protective cover with the sensor same position, and host computer master MCU is arranged in the data acquisition device, is connected by 485 order wires.The voltage signal that pressure sensor and temperature pick up receive exports slave computer to from MCU after the amplification, reach host computer master MCU through MAX485 communication.The host computer main frame has LCD to show and the usb communication interface, and from the direct read frequency signal of LCD, perhaps communicating by letter by 485 is stored in frequency signal in the USB storage device.Behind the electrification reset, at first start CPU, begin from correct position to carry out, guarantee that crystal oscillator has enough starting of oscillations and stabilization time with the assurance program by DCOCLK.Software control bit that suitable register can be set is determined last system clock frequency then.If crystal oscillator breaks down when being used as cpu clock MCLK, DCO can start automatically, to guarantee system's operate as normal; If program fleet, available house dog resets it.
Contrast accompanying drawing 6 when main frame and usb communication board communications, checks at first whether the flag bit that receives is " 0 ", when being " 0 ", check the sign that communication board sends, if " 2 ", expression need be write the USB plate to the data of measuring, if " 3 ", for the data of internal memory are deleted; If " 4 " are for reading the data in the external memory USB flash disk; If " 5 " are for reading external memory USB flash disk information (capacity of use of USB flash disk, residual capacity etc.); Otherwise discord USB plate communicates.
Contrast accompanying drawing 7, this module by the high-grade single-chip microcomputer of MSP430F149, real-time clock, usb communication plate, power down preserve that chip, output control, keyboard, LCD show, sound and light alarm indication and go up circuit such as the next photoelectricity isolated communication interface and chip is formed.The next data acquisition and sending module are disposed in the protective cover with the sensor same position, and this primary module is disposed in the ground data vasculum, is connected by 485 order wires.
Have very 16 MSP430F149 single-chip microcomputers of high performance-price ratio, adopt reduced instruction set computer (RISC) structure, had abundant addressing system (7 kinds of source operand addressing, 4 kinds of destination operand addressing), succinct 27 core instructions and a large amount of dummy instructions; Data storage all can be participated in multiple computing in a large amount of registers and the sheet; The processing instruction of tabling look-up efficiently in addition; Higher processing speed is arranged, and is 125ns in the 8MHz crystal-driven cycle of giving an order.These characteristics have guaranteed to work out out high efficiency source program.Aspect arithmetic speed, the MSP430 series monolithic can be realized the instruction cycle of 125ns under the driving of 8MHz crystal.16 data width, the instruction cycle of 125ns and multi-functional hardware multiplier (can realize taking advantage of adding) match, and can realize some algorithm of Digital Signal Processing.Under waiting mode, power consumption is 0.7uA, under battery saving mode, and the minimum 0.1uA that reaches.
The high-grade single-chip microcomputer of MSP430F149 is simultaneously integrated more rich interior peripheral hardware.They are respectively hardware watchdog, analog comparator A, timer A, timer B, two serial ports 0,1, hardware multiplier, liquid crystal driver, 12 ADC, I
2C bus immediate data access (DMA), port 0 (P0), port one～6 (P1～P6), basic timer (Basic Timer) etc.
The step that is used for the groundwater parameter on-the-spot test:
(1) data transmission wires (data wire) sensor one end is passed the sealed well lid of well casing, be connected to slave computer from MCU by wiring terminal (being the phoenix terminal again); The pressure sensor stainless steel casing that spins uses O type ring or teflon rubber belt sealing; Then data wire is connected on the prap of testing tool (steel wire of black must be pressed into fixed screw and screw); The sealed well lid that spins on casing uses O type ring or teflon rubber belt sealing joint.
(2) pressure sensor is fallen by the data wire hole above the sealed well lid, guaranteed that it after horizontal plane reduces because of air pressure, still is positioned under the horizontal plane.
(3) screw so that seal nipple with the gastight joint of spanner sensor cable.
(4) sensor cable is connected on the data logger.
(5) data logger is connected to (the optional battery of using of open-air no 220V power supply) on 220 volts of power supplys.
(6) open data logger and and according to step the test pound sign is set, frequency, and insert good flash disk, ready for obtaining test data.
(7) the closing presure relief valve is opened admission valve, the closing presure adjuster.
(8) source of the gas (pump or compressed air cylinder) is connected in the snap joint of barostat.
(9) start sampling, slowly open barostat well water is forced into the selected degree of depth, require usually satisfying the as far as possible little pressure of use on the basis of test conditions, to reduce the data noise.
(10) close admission valve and check system tightness.
(11) monitoring measured curve when curve reaches approximate the stablizing of reading of approximate stable state or well lid upward pressure table, thinks that system reaches approximate stable, can begin next step.
(12) open relief valve rapidly to excite vibration, starting of oscillation.
(13) the chien shih horizontal plane returns to static water level when sufficient, finishes shaking test one time.
After (14) test periods finish, according to the osjcillating ode figure that shows on the screen, determine whether test this time needs to preserve, be saved in flash disk if desired, at interface of main menu, select " preservation external memory ", " determining " gets final product (file is preserved back well logging numbering and added 1 automatically, can be saved in external memory to the test of many times data of same well logging).If dissatisfied to experimental data, directly retest, the experimental data in the instrument internal memory can empty automatically.Repeating step (7)～(13) get final product then.
After experimental data is preserved and is finished, can access inquiry to the historical data of external memory, at interface of main menu, select " file reads in ", input needs the well logging numbering (must be the numbering in the corresponding external memory, otherwise inquiry less than) of inquiry then, selects the numeral of " NO: " back then, which test data of this well logging just " is determined " then.
Claims (5)
1, boring oscillatory type transmission coefficient value experimental rig is characterized in that comprising head activating system, sensing system and data collecting system three parts, wherein corresponding the joining of I/O end of the output/input of sensing system and data collecting system; The output control terminal of data collecting system joins with the control input end of head activating system is corresponding.
2, boring oscillatory type transmission coefficient value experimental rig according to claim 1, the structure that it is characterized in that the head activating system is that reducing valve, air intake valve are housed on air inlet pipe; Seal chamber is inserted in the gas outlet of air intake valve; Borehole pressure display list, cable seal are housed on the seal chamber; On the escape pipe of seal chamber drain tap is housed.
3, boring oscillatory type transmission coefficient value experimental rig according to claim 1, the structure that it is characterized in that sensing system is to handle transport module, digital density sensor and shell by a pressure sensor peculiar to vessel, temperature collect module, data to constitute, and the data output end of pressure sensor wherein peculiar to vessel, temperature collect module and digital density sensor is handled corresponding the joining of input of transport module respectively with data.
4, boring oscillatory type transmission coefficient value experimental rig according to claim 2 is characterized in that the medium real time temperature of described temperature collect module and digital density sensor and density data output join by medium real time temperature and the density data input that data are handled in transport module and the data collecting system respectively.
5, boring oscillatory type transmission coefficient value experimental rig according to claim 1, the structure that it is characterized in that data collecting system comprises the data-in port of power supply, main frame, acquisition system, the data-out port of acquisition system, and the data-in port of main frame wherein and acquisition system data-out port join; The data-out port of acquisition system and the data-in port of main frame join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820030980XU CN201144696Y (en) | 2008-01-17 | 2008-01-17 | Drilling oscillatory type permeability coefficient value test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820030980XU CN201144696Y (en) | 2008-01-17 | 2008-01-17 | Drilling oscillatory type permeability coefficient value test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144696Y true CN201144696Y (en) | 2008-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820030980XU Expired - Fee Related CN201144696Y (en) | 2008-01-17 | 2008-01-17 | Drilling oscillatory type permeability coefficient value test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371891A (en) * | 2015-09-25 | 2016-03-02 | 河海大学 | Multifunctional integrated data collection system for indoor oscillation test platform |
| CN106643967A (en) * | 2017-02-21 | 2017-05-10 | 广西蓝天科技股份有限公司 | Protecting hole for monitoring underground water level, hole sealing device and combination method thereof |
| CN106814398A (en) * | 2017-03-31 | 2017-06-09 | 西安科技大学 | A kind of shallow overburden Seam Mining unconsolidated formation infiltration rate variation measuring method |
-
2008
- 2008-01-17 CN CNU200820030980XU patent/CN201144696Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371891A (en) * | 2015-09-25 | 2016-03-02 | 河海大学 | Multifunctional integrated data collection system for indoor oscillation test platform |
| CN106643967A (en) * | 2017-02-21 | 2017-05-10 | 广西蓝天科技股份有限公司 | Protecting hole for monitoring underground water level, hole sealing device and combination method thereof |
| CN106814398A (en) * | 2017-03-31 | 2017-06-09 | 西安科技大学 | A kind of shallow overburden Seam Mining unconsolidated formation infiltration rate variation measuring method |
| CN106814398B (en) * | 2017-03-31 | 2018-09-11 | 西安科技大学 | A kind of shallow overburden Seam Mining unconsolidated formation infiltration rate variation measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20100220 |