CN104060984A - Radio frequency admittance device and method for monitoring deep water level of water supply well - Google Patents
Radio frequency admittance device and method for monitoring deep water level of water supply well Download PDFInfo
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- CN104060984A CN104060984A CN201410274936.3A CN201410274936A CN104060984A CN 104060984 A CN104060984 A CN 104060984A CN 201410274936 A CN201410274936 A CN 201410274936A CN 104060984 A CN104060984 A CN 104060984A
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Abstract
The invention relates to the field of water level monitoring, in particular to a radio frequency admittance device for monitoring the deep water level of a water supply well. The radio frequency admittance device comprises a radio frequency admittance sensor probe and a radio frequency admittance transmitter junction box, wherein the radio frequency admittance sensor probe is arranged on a pipe wall of a water outlet pipeline, the radio frequency admittance transmitter junction box is arranged on a water outlet pipeline flange of the wellhead ground of the water supply well, and the radio frequency admittance sensor probe is connected with the radio frequency admittance transmitter junction box through a cable. The invention also provides a method for monitoring the deep water level of the water supply well, and the method comprises the following steps that 1, the radio frequency admittance sensor probe is installed; 2, water level signals are detected and converted; 3, the water level is read; 4, an electric submersible pump is controlled to work. Compared with the existing water level monitoring method, the method provided by the invention has the advantages that the water level of the water supply well can be dynamically monitored, the installation method is simple, the performance is reliable, the water level measuring range is wide, the depth can reach 914 meters, the error is smaller than 0.1 percent, the electric submersible pump is automatically started for pumping out water when the water level is ultrahigh, the outward water pumping of the electric submersible pump can be automatically stopped during waterless pumping, and the defects of burnt damage to the electric submersible pump caused by waterless pumping and electric energy waste can be avoided.
Description
Technical field
The present invention relates to the field of Level monitor, particularly a kind of radio frequency admittance devices and methods therefor of monitoring water supply well deep water level.
Background technology
At present, there is more than 2000 mouthful of water supply well in long celebrating oil field, the main problem existing is: can not dynamic monitoring SEA LEVEL VARIATION, annual 65% left and right that accounts for the electric submersible pump of whole damage because draining the electric submersible pump burning out, thereby cause that the well workover cycle is short, expense is high, the waste of electric submersible pump idle running simultaneously electric energy is also very serious.Water supply well water level from tens meters to hundreds of rice not etc., the current present situation of each oil recovery factory's water supply well is similar, and water level monitor device is not all installed, and cannot measure water supply well deep water level, when each well workover, can only observe hydrostatic level by outlet pipe; In the time that water is drained, power-off in time, causes large quantities of water supply well electric submersible pump idle running to burn out and waste a large amount of electric energy, seriously cause water supply well to stop supplying water, owing to having reduced toward underground flooding amount, strata pressure reduces, oil yield reduces, and has had a strong impact on completing of crude output.
The method of traditional survey water level is mostly that diffuse silicon pressure drag core body or ceramic pressure drag core body pressure sensor are put into and water-bedly changed measurement water level indirectly by pressure, and maximum can only measure 150 meters of water levels; When water level is dark again, the easy damage of barrier film of pressure sensor can not be used, and the sealing of sensor is also difficult to solve leakage, and it is increasing to measure water level error, obviously can not meet in this way the requirement of measuring water supply well deep water level.
The advantage of surveying water level by radar method is the impact that is not subject to change in dielectric constant, but disadvantage is to measure 25 meters of water levels; Utilize radio frequency electric capacity fluid level transmitter to survey water level, maximum also could be surveyed 20 meters of water levels, can not meet the requirement of monitoring water supply well deep water level far away.
Summary of the invention
Measure for the method that solves current survey water level the shortcoming that water level range ability is little, error is large, can not meet the problem of monitoring water supply well deep water level, and a kind of device and method of monitoring water supply well deep water level is provided.
The invention provides a kind of radio frequency admittance device of monitoring water supply well deep water level, comprise the radio frequency admittance sensor probe that is arranged on outlet pipe spool wall and be arranged on the radio frequency admittance transmitter junction box on the outlet pipe line flange of water supply well wellhead ground, described radio frequency admittance sensor probe is connected by cable with radio frequency admittance transmitter junction box.
Described radio frequency admittance sensor probe is bundled on outlet pipe spool wall by insulated wire is parallel, and described radio frequency admittance sensor probe is positioned at 30～50cm place, electric submersible pump pump housing top.
Described radio frequency admittance transmitter junction box connects PC host computer, the current signal that described PC host computer sends for received RF admittance transmitter junction box.
The present invention also provides a kind of method of monitoring water supply well deep water level, it is characterized in that, comprises the following steps:
Step 1, radio frequency admittance sensor probe is installed: by the parallel radio frequency admittance sensor probe water outlet pipeline that is fixed on 30～50cm place, electric submersible pump pump housing top, remove down-hole with electric submersible pump one, then radio frequency admittance transmitter junction box is arranged on water supply well wellhead ground outlet pipe line flange;
Step 2, water level signal detects and conversion: radio frequency admittance sensor probe uploads to the water level signal detecting in the radio frequency admittance transmitter junction box of ground, radio frequency admittance transmitter junction box through circuit conversion with it corresponding 4～20mA current signal output upload on PC host computer;
Step 3, reads water level: demonstrate actual water level by PC host computer, and read water supply well level diagram;
Step 4, control electric submersible pump work: after being worth up and down and comparing by the water level of actual water level and setting, send command signal, the work of control electric submersible pump, high water level starts electric submersible pump automatically to extracardiac pumping, and when dry tap, electric submersible pump stops not working to extracardiac pumping.
The present invention compared with prior art has the following advantages:
1, utilize and be arranged on radio frequency admittance measurement device water supply well deep water level on electric submersible pump, mounting method is simple, dependable performance, measurement water level range can reach greatly 914 meters dark, error is little by 1 ‰;
2, solving Liao Ge oil recovery factory water supply well water level does not have historical record, and water level on the spot numeral shows, while automatically starting electric submersible pump to extracardiac pumping, dry tap, automatically stops electric submersible pump to extracardiac pumping, the drawback that often burns out electric submersible pump and waste electric energy when water level superelevation;
3, change one toward water level parameter monitoring is spent a lot of time with energy and observes, analyzes, gathers and control, avoid manual steps loaded down with trivial details, efficiency is low, the poor reliability of data processing, disadvantage that dynamically Real-Time Monitoring water supply well deep water level dynamic change situation and data can not teletransmissions, for oil field water supply well deep water level measurement provides reliable monitoring device.
Below with reference to accompanying drawing, the present invention is described in further details.
Brief description of the drawings
Fig. 1 is scheme of installation of the present invention;
Fig. 2 is radio frequency admittance transmitter operating principle block diagram of the present invention;
Fig. 3 is radio frequency admittance transmitter circuit figure of the present invention;
Fig. 4 is water supply well Work condition analogue figure.
1, radio frequency admittance transmitter junction box; 2, water outlet pipeline; 3, ground outlet pipe line flange; 4, pit shaft; 5, radio frequency admittance sensor probe; 6, soil; 7, water layer; 8, electric submersible pump; 9, frequency-conversion control cabinet; 10, pressure meter; 11, flow meter; 12, ball-and-seat; 13, gate valve; 14, water tank.
Detailed description of the invention
Measure for the method that solves current survey water level the shortcoming that water level range ability is little, error is large, can not meet the problem of monitoring water supply well deep water level.The invention provides a kind of as Fig. 1, the radio frequency admittance device of the monitoring water supply well deep water level shown in Fig. 3, comprise and be arranged on the radio frequency admittance sensor probe 5 on water outlet pipeline 2 tube walls that are connected with electric submersible pump and be arranged on the radio frequency admittance transmitter junction box 1 on water supply well wellhead ground outlet pipe line flange 3, radio frequency admittance sensor probe 5 is connected with radio frequency admittance transmitter junction box 1, the reference cable ground connection that is connected with one end on wellhead ground water outlet pipeline 2 bottom surfaces, radio frequency admittance transmitter junction box 1 is electrically connected with PC host computer, the current signal that PC host computer sends for received RF admittance transmitter junction box 1.
The radio frequency admittance device operating principle of monitoring water supply well deep water level of the present invention as shown in Figure 2, the radio frequency admittance sensor probe 5 being installed in parallel on water outlet pipeline 2 tube walls that are connected with electric submersible pump forms electrochemical capacitor with electric submersible pump water outlet pipeline 2, the positive pole that wherein radio frequency admittance sensor probe 5 is electrochemical capacitor, what electric submersible pump connected goes out the negative pole of water pump pipe line 2 for electrochemical capacitor, and water is as electrolyte.In the time that the height of electrolyte water changes, when the water level of water supply well changes, capacitance also changes.
To an impure water supply well of strong electric conductivity, because water conducts electricity, earth point can be considered on the surface of radio frequency admittance sensor probe 5 insulating layers, radio frequency admittance sensor probe 5 is only shown as to the complex impedance of an electric capacity and resistance composition, thereby cause two problems.
First problem is that water level itself is equivalent to an electric capacity to radio frequency admittance sensor probe 5, it does not consume the energy (pure electric capacity does not consume energy) of transmitter, but hang water to containing resistance in radio frequency admittance sensor probe 5 equivalent circuits, hang the impedance meeting consumed energy of water, thereby oscillator voltage is pulled down, cause the output of bridge road to change, produce measure error.In the present embodiment, by increase a driver between oscillator and electric bridge, make the energy consuming obtain supplementing thereby the stable oscillating voltage that is added in radio frequency admittance sensor probe 5.
Second Problem is for conductivity water, and the earth point of radio frequency admittance sensor probe 5 surface of insulating layer has covered whole water level and hung pool, makes effectively to measure electric capacity and expands to the top that hangs water, so just produce and hang water error, and the stronger error of electric conductivity is larger.But any water does not conduct electricity completely, from electrical point, to hang water layer and be equivalent to a resistance, the part that radio frequency admittance sensor probe 5 is hung water covering is equivalent to a transmission line being made up of numerous infinitesimal electric capacity and resistive element.According to mathematical theory, if bridging long enough is hung the electric capacity of water and the impedance of active component and capacitive reactance numerical value and equated, therefore can measure respectively electric capacity and resistance with exchanging phase demodulation sampler.The total capacitance of measuring is equivalent to C water level+C extension water and deducts the resistance R equating with C again, just can obtain the actual value of water level, thereby get rid of the impact of hanging water, and C measurement=C water level+C hangs water, and C water level=C Ce Liang – C hangs water=C Ce Liang – R.
For solving the extension water problems on radio frequency admittance sensor probe 5, radio frequency admittance sensor probe adopts a kind of two new concentric structures.Innermost layer is core wire, skin is special teflon screen layer, between core wire and screen layer, there is no electrical potential difference, even if it is anti-less to hang water resistance on radio frequency admittance sensor probe 5, do not have electric current and flow through, the electric current that just goes out water pump pipe line 2 from radio frequency admittance sensor probe 5 centers to electric submersible pump of circuit measuring yet.Because screen layer energy block current flow is returned and flowed on electric submersible pump water pump outlet pipe line 2 walls along radio frequency admittance sensor probe 5, thereby can only flow on water outlet pipeline 2 walls by tested water through radio frequency admittance sensor probe 5 ends earth-current.Although there is electrical potential difference between screen layer and water outlet pipeline 2, therefore there is electric current to flow through between the two, this electric current is not measured, does not affect measurement result, so just measuring junction is protected, and is not hung the impact of water.
When middle institute, filling medium is DIELECTRIC CONSTANTS
1air time, capacitance is: c=2 π ε
1l/ ㏑ (R/r), if a part for electrode is by water power DIELECTRIC CONSTANTS
2when institute submergence, now two interelectrode capacitance c '=c+ Δ c, if the length of electrode submergence is l, Δ c is: Δ c=2 π (ε
2-ε
1) l/ ㏑ (R/r), from formula, work as ε
1, ε
2, r, R be when constant, Δ c and l are proportional, the numerical value of therefore measuring capacitance increase just can be known the height of water level, wherein r, R proportion by subtraction are the radiuses of radio frequency admittance sensor 5, water outlet pipeline 2.
The present invention by adopt radio frequency admittance measuring method by electrolytical impedance together with capacitive reactance informix, with the height change of tested aqueous medium immersion sensor probe, because these variations comprise the variation of capacitance and conductance, reflect the variation of electric voltage frequency, by radio frequency admittance sensor probe 5, voltage-frequency signal is sent in the radio frequency admittance transmitter junction box 1 on wellhead ground, through circuit conversion with it corresponding 4～20mA current signal output upload on PC host computer, read water supply well level diagram, and demonstrate actual water level by PC host computer, store 1 month water level historical record.After being worth up and down and being compared by the water level of actual water level and setting, send command signal, control electric submersible pump 8 and work, high water level starts electric submersible pump automatically to extracardiac pumping, and when dry tap, electric submersible pump stops not working to extracardiac pumping.
Radio frequency admittance device is surveyed the implementation procedure of water supply well water level: as shown in Figure 2,3, standard sine signal generating circuit sends the radiofrequency signal of 100kHZ, through filter circuit, interference component is filtered, obtain the radiofrequency signal of purer 100kHZ, the measurement category of capacitor drive circuit for flooding.Water level signal is converted into voltage signal by transformer bridges measuring circuit, and the voltage signal of measurement is divided into 2 tunnels: comprise water level signal and hang water in radio frequency admittance sensor signal; The synchronizing signal of sampling instant is provided.Synchronizing signal, through processing, provides sampling instant, in this moment, measuring-signal is sampled, and can obtain pure water level signal, thereby eliminates the impact that radio frequency admittance sensor probe 5 is hung water.The water level signal detecting is through low-pass filter circuit, eliminate some and disturb, then send into programmable control system and carry out A/D conversion, data processing, and show actual water level by display circuit, the water level of actual water level and setting is worth and compares up and down, provides and controls electric submersible pump 8 signals.User can pass through keyboard input order signal, and system is carried out to self calibration, improves measuring accuracy.
The present embodiment is also carried and has been encircleed a kind of method of monitoring water supply well deep water level, in the time of maintenance water supply well electric submersible pump 8, be fixed on electric submersible pump water outlet pipeline 2 parallel radio frequency admittance sensor probe 5, remove down-hole with electric submersible pump 8 one, radio frequency admittance transmitter junction box 1 goes out the blue dish 3 of water pump pipe collimation method by wellhead ground and installs on the ground.First, measure the length of electric submersible pump 8 under water supply well, and do with record, to guarantee that radio frequency admittance sensor probe 5 enters the length under water supply well, secondly, when lower electric submersible pump 8, with insulated wire, 5 bindings of radio frequency admittance sensor probe are fixed on to electric submersible pump 2 pump top water outlet pipeline approximately 30～50 cm places, radio frequency admittance sensor probe 5 is for bundling a place with every joint electric submersible pump pump upper water-out pipeline 2, then the water pump pipe line 2 that goes out that radio frequency admittance sensor probe 5 connects with electric submersible pump enters down-hole, to reduce the binding point of the water outlet pipeline 2 that radio frequency admittance sensor probe 5 is connected with electric submersible pump as far as possible, and keep radio frequency admittance sensor 5 probes to be parallel to the water outlet pipeline 2 that electric submersible pump connects, can not make radio frequency admittance sensor probe 5 rotate distortion, in order to avoid cause the error in measurement, pop one's head in signal is uploaded in ground radio frequency admittance transmitter junction box 1 by radio frequency admittance sensor 5, radio frequency admittance transmitter junction box 1 through circuit conversion with it corresponding 4～20mA current signal output upload on PC host computer, read water supply well level diagram, and demonstrate actual water level by PC host computer, store 1 month water level historical record.After being worth up and down and comparing by the water level of actual water level and setting, send command signal, control electric submersible pump 8 and work.
Be greater than when setting value when detecting water level, while giving electric submersible pump 8 for 380V voltage, electric submersible pump 8 is started working to extracardiac pumping, and the water outlet pipeline 2 that water connects from electric submersible pump is exported, in the time that the water level 7 of water layer starts to decline, the signal value that radio frequency admittance sensor probe 5 is exported starts to reduce, ground PC host computer reaction water layer 7 water levels are also reducing, in the time that water is drained, the curent change value of output is less than while setting current value, ground PC host computer stops electric submersible pump 8 to powerdown signal and works no longer to extracardiac pumping, in the time that the water level of water layer 7 rises, the signal value that radio frequency admittance sensor probe 5 is exported is increasing, the water level of PC host computer reaction water layer 7 is on the ground increasing, while exceeding the water level of water layer 7 of regulation, radio frequency admittance sensor probe 5 sends initiating signal, starting electric submersible pump 8 works to extracardiac pumping, water is outwards exported by water outlet pipeline 2, damage water supply well water layer 7 and be provided with pit shaft 4 in order to prevent that soil 6 from collapsing.
Water supply well Work condition analogue figure, as shown in Figure 4, frequency-conversion control cabinet 9 is for electric submersible pump 8 switching controls, and when electric submersible pump 8 is worked, pressure meter 10 and flow meter 11 that water is installed by ground water outlet pipeline 2 horizontal components successively, for recording discharge pressure and the water yield.Open after ball-and-seat 12 and gate valve 13, water enters water tank 14.
Radio frequency admittance transmitter is prior art, and its operating principle and circuit diagram are shown in respectively Fig. 2, Fig. 3, " capacitive radio-frequency admittance level transmitter and the method for work " that is specifically 201010578690.0 with reference to number of patent application.In the present embodiment, the model of radio frequency admittance transmitter is 508-45-X38, and the material of radio frequency admittance sensor is 316sss/TFA.
More than exemplifying is only to illustrate of the present invention, does not form the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention all belongs to protection scope of the present invention.The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (4)
1. monitor the radio frequency admittance device of water supply well deep water level for one kind, it is characterized in that: comprise the radio frequency admittance transmitter junction box (1) on the outlet pipe line flange (3) that is arranged on the radio frequency admittance sensor probe (5) on water outlet pipeline (2) tube wall and is arranged on water supply well wellhead ground, described radio frequency admittance sensor probe (5) is connected by cable with radio frequency admittance transmitter junction box (1).
2. a kind of radio frequency admittance device of monitoring water supply well deep water level according to claim 1, it is characterized in that: described radio frequency admittance sensor probe (5) is bundled on water outlet pipeline (2) tube wall by insulated wire is parallel, and described radio frequency admittance sensor probe (5) is positioned at 30～50cm place, electric submersible pump (8) pump housing top.
3. a kind of radio frequency admittance device of monitoring water supply well deep water level according to claim 1, it is characterized in that: described radio frequency admittance transmitter junction box (1) connects PC host computer the current signal that described PC host computer sends for received RF admittance transmitter junction box (1).
4. a method of monitoring water supply well deep water level, is characterized in that, comprises the following steps:
Step 1, radio frequency admittance sensor probe (5) is installed: by parallel radio frequency admittance sensor probe (5) the water outlet pipeline (2) that is fixed on 30～50cm place, electric submersible pump (8) pump housing top, remove down-hole with electric submersible pump (8), then radio frequency admittance transmitter junction box (1) is arranged on water supply well wellhead ground outlet pipe line flange (3);
Step 2, water level signal detects and conversion: it is upper that the water level signal detecting is uploaded to ground radio frequency admittance transmitter junction box (1) by radio frequency admittance sensor probe (5), radio frequency admittance transmitter junction box (1) through circuit conversion with it corresponding 4～20mA current signal output upload on PC host computer;
Step 3, reads water level: demonstrate actual water level by PC host computer, and read water supply well level diagram;
Step 4, control electric submersible pump (8) work: after being worth up and down and comparing by the water level of actual water level and setting, send command signal, control electric submersible pump (8) and work, high water level starts electric submersible pump automatically to extracardiac pumping, automatically stops electric submersible pump work to extracardiac pumping when dry tap.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698898A (en) * | 2016-03-19 | 2016-06-22 | 中国计量学院 | Deep well water level sensor based on TDR principle and water level measuring method thereof |
| CN105784073A (en) * | 2016-03-19 | 2016-07-20 | 中国计量学院 | TDR (time domain reflectometry) based float switch type water level sensor and TDR based float switch type water level measurement method |
| WO2017024524A1 (en) * | 2015-08-11 | 2017-02-16 | 深圳朝伟达科技有限公司 | Deep water level monitoring system for water source well |
| CN109116801A (en) * | 2018-09-19 | 2019-01-01 | 淮北矿业股份有限公司 | A kind of surface facility water supply tele-control system |
| CN112097853A (en) * | 2020-09-24 | 2020-12-18 | 山东省地矿工程勘察院 | Groundwater resource on-line monitoring system |
| CN112577568A (en) * | 2020-11-02 | 2021-03-30 | 青蛙泵业股份有限公司 | Water source well water level monitoring system |
| CN112942453A (en) * | 2021-03-19 | 2021-06-11 | 中国十九冶集团有限公司 | Intelligent monitoring equipment for lifting height of guide pipe in pouring process of rotary excavating cast-in-place pile |
| CN116163714A (en) * | 2022-12-30 | 2023-05-26 | 陕西兴正伟新能源科技有限公司 | Wireless water level measuring instrument under wellhead closed condition of geothermal well |
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| WO2017024524A1 (en) * | 2015-08-11 | 2017-02-16 | 深圳朝伟达科技有限公司 | Deep water level monitoring system for water source well |
| CN105698898A (en) * | 2016-03-19 | 2016-06-22 | 中国计量学院 | Deep well water level sensor based on TDR principle and water level measuring method thereof |
| CN105784073A (en) * | 2016-03-19 | 2016-07-20 | 中国计量学院 | TDR (time domain reflectometry) based float switch type water level sensor and TDR based float switch type water level measurement method |
| CN105698898B (en) * | 2016-03-19 | 2018-10-26 | 中国计量学院 | The water level of deep well sensor and its water level measurement method of TDR principles |
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| CN112097853A (en) * | 2020-09-24 | 2020-12-18 | 山东省地矿工程勘察院 | Groundwater resource on-line monitoring system |
| CN112097853B (en) * | 2020-09-24 | 2024-04-12 | 山东向海慧通科技有限公司 | Online monitoring system for groundwater resources |
| CN112577568A (en) * | 2020-11-02 | 2021-03-30 | 青蛙泵业股份有限公司 | Water source well water level monitoring system |
| CN112942453A (en) * | 2021-03-19 | 2021-06-11 | 中国十九冶集团有限公司 | Intelligent monitoring equipment for lifting height of guide pipe in pouring process of rotary excavating cast-in-place pile |
| CN116163714A (en) * | 2022-12-30 | 2023-05-26 | 陕西兴正伟新能源科技有限公司 | Wireless water level measuring instrument under wellhead closed condition of geothermal well |
| CN116163714B (en) * | 2022-12-30 | 2023-08-01 | 陕西兴正伟新能源科技有限公司 | Wireless water level measuring instrument under wellhead closed condition of geothermal well |
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Application publication date: 20140924 |
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