CN1207540C - Multiphase material level sensor - Google Patents
Multiphase material level sensor Download PDFInfo
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- CN1207540C CN1207540C CN 02110211 CN02110211A CN1207540C CN 1207540 C CN1207540 C CN 1207540C CN 02110211 CN02110211 CN 02110211 CN 02110211 A CN02110211 A CN 02110211A CN 1207540 C CN1207540 C CN 1207540C
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- cable
- electrically connected
- split
- material level
- analog switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention relates to a multiphase material level sensor which belongs to the technical field of detection devices and aims to provide a sensor which not only can detect an oil-water interface level in an oil tank, but also can measure the material levels of crude oil, sewage and silt with high precision in the whole range. The multiphase material level sensor is provided with a capacitance transmitter and a connection body. The present invention has the technical characteristics that an inner insulation sleeve is arranged at the outer side of the connection body, and a plurality of tubular metal split poles are arranged at the outer side of the inner insulation sleeve, wherein an insulating layer is arranged between two adjacent split poles, an external insulation sleeve is coated at the outer side of each split pole, a cable wire is arranged in a cavity of the connection body, and the split poles are electrically connected with the capacitance transmitter through the cable wire.
Description
Technical field
The present invention relates to a kind of measurement mechanism, especially can carry out the multiphase material level sensor that gamut is measured the crude oil in the oil tank, sewage, silt.
Background technology
At present, the oil field from oil well adopt crude oil through behind the decon, dewatering process, become qualified separator oil, be injected in each oil tank, to treat outer defeated or allocation and transportation.Because impurity elimination, dehydration are not thorough, as time passes, can be at the thicker mud of oil tank bottom deposit one deck, also have one section sewage above, on sewage, be only crude oil.Because the oil field will be understood the output of oil recovery factory at any time, therefore need the store oil amount to be measured regularly.And present measuring method is by manually climbing up oil tank, hang a weight from artificial mouthful with rope or tape measure oil mass is measured, effort and inaccurate.The someone utilized the ultrasonic ranging method to replace manual measurement in recent years, also have the static pressure type pressure transducer sunk to jar at the bottom of near, directly measure the height of oil level.Though this method measuring accuracy is higher, but the data that record are the above height until pasta of popping one's head in, it is then unknown how much crude oil, sewage, mud respectively accounts for, if obtain the height that the definite quantity of crude oil not only must be known pasta, also must understand the position of water-oil interface.The interface instrument of using in the oil field at present has multiple, divides float-type, differential pressure type, condenser type, the nucleon formula etc. of mainly containing from principle.Because profit density different and be subjected to the influence of factors such as electric field, temperature, pressure cause water-oil interface very complicated, various interfaces instrument all has its limitation, can't carry out effectively in real time, accurately measure water-oil interface and each phase thing position in the practical application.US005103368A discloses a kind of level sensor, it can only be measured the single-phase product oil of good fluidity, when multi-phase material is measured, and easy short circuit between the electrode, and can't carry out the measurement of interface and thing position to heterogeneous commingled crude moisture, mud, and range is little.CN2341131Y discloses a kind of pick-up unit of petroleum tank, and it only can be measured water-oil interface, can not continuous coverage, and operate loaded down with trivial details, poor practicability.More than two kinds of devices the two poles of the earth of being used for capacitive transducer self provide by device, distance is very near, is subject to the influence of bridging.
Summary of the invention
In order to overcome the technical deficiency that existing level sensor can not be measured heterogeneous thing position, the invention provides a kind of multiphase material level sensor, this sensor can not only be measured water-oil interface position in the oil tank, and can carry out gamut, measure accurately the thing position of crude oil, sewage, silt.The technical solution adopted for the present invention to solve the technical problems is: be provided with capacitive pick-up, connector, its technical characterstic is that the connector outside is provided with interior insulation sleeve, the interior insulation sleeve outside is provided with more piece tubular metal split pole, be provided with insulation course between two adjacent split poles, all split pole outsides are wrapped with external insulation sleeve, interior insulation sleeve inner chamber is provided with cable, and split pole is electrically connected with capacitive pick-up through cable.The inner chamber of connector is provided with module.The effect of module is by module and several limited leads all metal split poles and capacitive pick-up to be linked, and realizes the timesharing of every joint metal split pole is measured under the control of capacitive pick-up.Module is made up of multiway analog switch and shift register, the data output end of shift register is electrically connected with the gating end of multiway analog switch, the output terminal of multiway analog switch is electrically connected with a plurality of split poles adjacent one another are respectively, and the control end of shift register is electrically connected with cable through electric wire.Module also can be made up of multiway analog switch and demoder, multiway analog switch and demoder are electrically connected mutually, the data output end of demoder is electrically connected to the gating control end of multiway analog switch, by connecting necessary extended chip, demoder can link with a plurality of analog switches, the output terminal of multiway analog switch connects adjacent a plurality of split poles respectively, and the control end of demoder is electrically connected with cable through electric wire.Split pole is electrically connected with cable through electric wire.Connector is the rigidity pipe.Connector also can be cable wire, the interior insulation tube that interior insulation sleeve is contacted mutually by more piece is formed, two of interior insulation tube is provided with mortar head and mortar bowl, adopt mortar head, mortar bowl formula respective outer side edges between the insulation tube end in the two adjacent joints, be processed with cable aperture and cable wire hole on mortar head and the mortar bowl respectively, some cable wires interior insulation tube inner chamber pass the cable wire hole with each joint in insulation tube be cascaded.Each split pole can directly be electrically connected with cable through electric wire.All metal split poles of the present invention are formed main pole, the tank body of oil tank is another utmost point, constitutes to become dielectric capacitance, by measuring the capacitance between each split pole and the tank body, thereby the medium that can judge this split pole position is any material, and can find the position of water-oil interface exactly.
The invention has the beneficial effects as follows, can measure the position of water-oil interface accurately and real-time, simultaneously can carry out gamut and measure the thing position of crude oil, sewage and silt in the heterogeneous material, simple in structure, and between the split pole and can be because of the multi-phase material short circuit between main pole and the tank body.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an one-piece construction synoptic diagram of the present invention.
Fig. 2 is the local longitudinal profile structural map of the main pole of first embodiment of the invention.
Fig. 3 is the local longitudinal profile structural map of the main pole of second, third embodiment of the present invention.
Fig. 4 is the circuit theory diagrams of module among second embodiment.
Fig. 5 is the connecting relation synoptic diagram of module and cable and split pole among second embodiment.
Fig. 6 is the circuit theory diagrams of module among the 3rd embodiment.
Fig. 7 is the connecting relation synoptic diagram of module and cable and split pole among the 3rd embodiment.
1. capacitive pick-ups among the figure, 2. ring flange, 3. upper insulator, 4. split pole, 5. external insulation sleeve, 6. lower insulator, 7. cable, 8. insulation course, 9. connector, 10. module, 11. electric wires, insulation sleeves in 12., 13. external insulation sleeve, 14. demoders, 15. multiway analog switches, 16. the capacitance signal line, 17. coded signal lines, 18. power leads, 19. power ground, 20. capacitance signal lines, 21. serial data incoming lines, 22. serial time clock line, 23. power leads, 24. power leads, 25. shift register, 26. multiway analog switch, 27. serial data output lines, C001, C002, C003, C011, C012, C013, C021, C022, C023 is a split pole.
Embodiment
At Fig. 1, Fig. 2, among Fig. 3, metal main pole of the present invention is serially connected in the outside by more piece tubular metal split pole (4) and is wrapped with on the connector (9) of interior insulation sleeve (12), the fundamental purpose of interior insulation sleeve (12) is that each split pole (4) and connector (9) and other conductive component are kept apart, be provided with insulation course (8) between adjacent two split poles (4), connector (9) inner chamber is provided with cable (7), be provided with external insulation sleeve (13) around the main pole outside, the main effect of external insulation sleeve (13) is to keep apart with each split pole (4) and whole sensor and by the conducting medium of side (as water), metal main pole upper end and bottom are provided with upper insulator (3) respectively, lower insulator (6), the main pole upper end is fixed on the ring flange (2), ring flange (2) is gone up and is fixed with capacitive pick-up (1) through insulator (3), ring flange (2) is fixing through insulating mat and oil tank insulation, and the bulkhead of main pole and oil tank is respectively a utmost point of electric capacity.
In first embodiment shown in Figure 2, connector (9) is flexible cable wire, cable wire is arranged in insulation sleeve (12) inner chamber, the interior insulation tube that interior insulation sleeve (12) is contacted mutually by more piece is formed, two of interior insulation tube is provided with mortar head and mortar bowl, adopt the mortar head between the insulation tube end in the two adjacent joints, mortar bowl formula respective outer side edges, be processed with cable aperture and cable wire hole on mortar head and the mortar bowl respectively, some cable wires interior insulation tube inner chamber pass the cable wire hole with each joint in insulation tube be cascaded, at the main pole two ends cable wire is strained, and fixing, insulation tube links together tightly in each joint thereby make.Be with quantity on the interior insulation sleeve (12) and be no less than the nine tubular metal split poles (4) that save, be provided with insulation course (8) between adjacent two split poles (4), be provided with external insulation sleeve (13) around split pole (4) outside, be provided with cable (7) in the inner chamber of interior insulation sleeve (12), the upper end of cable (7) is electrically connected with capacitive pick-up (1), cable (7) is made up of many wires, every wire only with the corresponding electrical connection of a split pole (4), the lower insulator of main pole lower end is fixed with balance weight body on (6), makes flexible main pole be in plumbness all the time.
Its principle of work is, capacitive pick-up (1) is under control of microcomputer, one by one with main pole on each split pole (4) connect, when connecting a split pole (4) (as: C001), with other split pole (4) (as: C002, C003, C011, C012 ... C032, C033) keep off-state, after each split pole (4) is connected, carry out capacitance measurement by the special-purpose capacity measurement circuit in the capacitive pick-up (1), the result who records is recorded in the internal memory by capacitive pick-up (1), after the capacitance for the treatment of all split poles (4) is measured, by capacitive pick-up (1) data are focused on, for each split pole (4), because it is all fixing to form the two poles of the earth (split pole and bulkhead) and the distance thereof of electric capacity, so, its capacitance that records only depends on the character of medium between the two poles of the earth, specifically, be exactly wherein filling be what medium, and the dielectric coefficient (air of medium, crude oil, mud, the relative dielectric coefficient of water is respectively 1.0,3.0-5.0,40-60,80), simultaneously, since material be distributed with certain continuity and correlativity, so, by each minute electrode capacitance that records being carried out the analysis and the processing of system, can learn the distribution of material in big jar with corresponding software.
In Fig. 3, Fig. 4, second embodiment shown in Figure 5, compare connector (9) inner chamber with first embodiment and be provided with a plurality of modules (10), each module (10) is electrically connected with its several split poles (4) on every side, the control end of all modules (10) all is connected on several wires of cable (7) in regular turn jointly, because all modules (10) all link to each other with the interior identical several wires of cable (7), thereby reduced the radical of the interior electric wire of connector (9) inner chamber cable (7) widely.Its concrete annexation is that each module (10) is made up of the coder/decoder (14) (as: V05027 etc.) of a serial and the peripheral auxiliary element of some multiway analog switches (15) (as: CD4066 etc.) and necessity.The data output end of demoder (14) is electrically connected to the gating control end of multiway analog switch (15), the output terminal of multiway analog switch (15) connects adjacent each section metal split pole (4) respectively, first multiway analog switch (15) connects C001, C002, C003 split pole, second multiway analog switch (15) meets C011, C012, C013, and the 3rd multiway analog switch (15) meets C021, C022, C023.Each module (10) is drawn four lines in addition respectively, respectively with the cable (7) that is connected by capacitive pick-up (1) in four wires on, they are respectively capacitance signal line (16) (linking to each other with input end X, Y, the Z of all multiway analog switches in the module), coded signal line (17) (linking to each other with the data input pin of demoder), power lead (18) (linking to each other with the supply pin of all integrated packages in the module), power ground (19) (linking to each other with the power supply lower margin of all integrated packages in the module).
Its concrete course of work is, the coder/decoder (14) of each module (10) all has the unique address A1-A8 of oneself, and A1-A8 can be in advance by ground connection, power supply, the unsettled coding.The coded signal of being sent here by capacitive pick-up (1) comprises 8 bit address and 4 bit data (representing different logic states with different pulse duty factors and combination), if it is identical with the address of a certain module (10) inner encoder by the address that coded signal line (17) is carried, then 4 bit data in the coded signal will be latched into the data output end of the demoder (14) of this module (10), and then output to the gating control end of multiway analog switch integrated package (15), the a certain split pole (4) (as: C001) that control connects with it is realized electrically connecting with capacitance signal line (16), and other split pole (C002, C003, C011, C012, C013, C021, C022, C023) still keep off-state with capacitance signal line (16), like this, the different periods, carry different address and data by coded signal line (17), can realize measurement respectively all split poles (4) capacitance.Thereby measure water-oil interface and thing position situation in the tank body.The capacitance signal line (16) of all modules of present embodiment (10), coded signal line (17), power lead (18) and power ground (19) all respectively with cable (7) in the corresponding connection of four wires.
At Fig. 3, Fig. 6, among the 3rd embodiment shown in Figure 7, compare with second embodiment, module (10) is made up of the peripheral auxiliary element an of shift register (25) (as: 74LS164) and several (as: one) multiway analog switches (26) (as: 4066) and necessity, the data output end (Q0-Q7) of shift register (25) and the gating control end (A of multiway analog switch (26), B, C) link to each other respectively, the output terminal of the multiway analog switch of three modules (26) meets adjacent metal split pole C001 respectively, C002, C003, C011, C012, C013, C021, C022, C023, each module (10) draws in addition that corresponding electric wire is connected in the cable (7) that 5 lines are connected with capacitive pick-up (1) respectively, they are respectively that capacitance signal line (20) is (by the input end X of multiway analog switch integrated package, Y, Z draws after linking to each other), serial data incoming line (21) (the serial data input pin by shift register is drawn), serial time clock line (22) (the clock pin by shift register is drawn), power lead (23) (linking to each other) with the power pin of all integrated packages in the module, power ground (24) (linking to each other) with the power supply ground pin of all integrated packages in the module, in addition, also has a serial data output line (27), draw by the Q2 of shift register (25) data output end end, be used for being connected of serial data input end in the shift register (25) with next adjacent modules (10).Cable in the present embodiment (7) only need comprise 5 wires (11) can carry out gating control to all split poles.
Its concrete course of work is, for all modules (10) of serial, clock is imported saltus step each time, and the data of its data input pin will move to Q0 and latch, and simultaneously, the data shift of Q0 is to Q1 and latch, and the like.Therefore, if this system connects n split pole (C001, C002, C003, C011, C012 altogether ..., C0n2, C0n3 ..., Cn03), in the cycle period that forms by 3n time clock, have only a gated data to be " 1 ", all the other split poles and capacitance signal line keep off-state, like this, by measurement circuit special-purpose in the capacitive pick-up (1), will finish measurement successively to all split poles (4) capacitance signal.
Connector of the present invention (9) can also be the rigidity structure, and promptly connector (9) is a rigidity pipe, and the rigidity pipe outside is provided with interior insulation sleeve (12), and cable (7) is positioned at the inner chamber of rigidity pipe, and the main pole lower end of rigidity does not need balance weight body.
Claims (7)
1, a kind of multiphase material level sensor, be provided with capacitive pick-up, connector, it is characterized in that the connector outside is provided with interior insulation sleeve, the interior insulation sleeve outside is provided with more piece tubular metal split pole, be provided with insulation course between two adjacent split poles, all split pole outsides are wrapped with external insulation sleeve, and interior insulation sleeve inner chamber is provided with cable, and split pole is electrically connected with capacitive pick-up through cable.
2, according to the described multiphase material level sensor of claim 1, its feature is provided with module at said connector inner chamber.
3, according to the described multiphase material level sensor of claim 2, its feature is made up of multiway analog switch and shift register in said module, the data output end of shift register is electrically connected with the gating end of multiway analog switch, the output terminal of multiway analog switch is electrically connected with a plurality of split poles adjacent one another are respectively, and the control end of shift register is electrically connected with cable through electric wire.
4, according to the described multiphase material level sensor of claim 2, its feature also can be made up of multiway analog switch and demoder in said module, multiway analog switch and demoder are electrically connected mutually, the data output end of demoder is electrically connected to the gating control end of multiway analog switch, by connecting necessary extended chip, demoder can link with a plurality of analog switches, and the output terminal of multiway analog switch connects adjacent a plurality of split poles respectively, and the control end of demoder is electrically connected with cable through electric wire.
5, according to the described multiphase material level sensor of claim 1, its feature is electrically connected with cable through electric wire at said split pole.
6, according to claim 1 or 2 described multiphase material level sensors, its feature is a rigidity pipe at said connector.
7, according to claim 1 or 2 described multiphase material level sensors, it is characterized in that said connector is a cable wire, the interior insulation tube that interior insulation sleeve is contacted mutually by more piece is formed, two of interior insulation tube is provided with mortar head and mortar bowl, adopt mortar head, mortar bowl formula respective outer side edges between the insulation tube end in the two adjacent joints, be processed with cable aperture and cable wire hole on mortar head and the mortar bowl respectively, some cable wires interior insulation tube inner chamber pass the cable wire hole with each joint in insulation tube be cascaded.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02110211 CN1207540C (en) | 2002-03-29 | 2002-03-29 | Multiphase material level sensor |
| PCT/CN2003/000216 WO2003083415A1 (en) | 2002-03-29 | 2003-03-25 | A multiphase level sensor |
| AU2003227460A AU2003227460A1 (en) | 2002-03-29 | 2003-03-25 | A multiphase level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02110211 CN1207540C (en) | 2002-03-29 | 2002-03-29 | Multiphase material level sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1375435A CN1375435A (en) | 2002-10-23 |
| CN1207540C true CN1207540C (en) | 2005-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02110211 Expired - Fee Related CN1207540C (en) | 2002-03-29 | 2002-03-29 | Multiphase material level sensor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1207540C (en) |
| AU (1) | AU2003227460A1 (en) |
| WO (1) | WO2003083415A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9395349B2 (en) | 2011-03-28 | 2016-07-19 | Weihai Haiher Technology Co. | Electrode structure and apparatus for use in measuring oil-water constituents |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2126612A4 (en) | 2007-02-23 | 2010-07-07 | Warren Michael Levy | Fluid level sensing device and methods of using same |
| CN102052952A (en) * | 2010-11-18 | 2011-05-11 | 陕西科技大学 | Oil-water interface measuring device of crude oil storage tank and measuring method thereof |
| CN102818605A (en) * | 2012-02-25 | 2012-12-12 | 威海海和科技有限责任公司 | High-temperature and high-voltage resistance subsection capacitive level transmitter |
| CN105784062B (en) * | 2016-04-13 | 2018-11-06 | 辽宁科技大学 | The detection method and device of level height in a kind of material bin |
| CN106643975A (en) * | 2016-11-11 | 2017-05-10 | 上海沃纳机电设备有限公司 | Separate electrode continuous material level indicator and measuring method thereof |
| CN112729051A (en) * | 2020-12-08 | 2021-04-30 | 广东化一环境科技有限公司 | Medium thickness detection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2934672B2 (en) * | 1989-07-03 | 1999-08-16 | 直之 大纒 | Capacitive detector |
| US5103368A (en) * | 1990-05-07 | 1992-04-07 | Therm-O-Disc, Incorporated | Capacitive fluid level sensor |
| CN2341131Y (en) * | 1998-06-19 | 1999-09-29 | 耿连瑞 | All range inspector for crude oil tank |
| CN2432565Y (en) * | 2000-06-22 | 2001-05-30 | 威海北洋电气集团股份有限公司仪器分公司 | Continuous capacitance sensor |
| CN1211644C (en) * | 2000-06-22 | 2005-07-20 | 威海海和科技有限责任公司 | Flexible tubular level sensor |
| CN2480818Y (en) * | 2001-06-20 | 2002-03-06 | 威海北洋电气集团股份有限公司仪器分公司 | Flexible quasisection capacitance material position sensor |
-
2002
- 2002-03-29 CN CN 02110211 patent/CN1207540C/en not_active Expired - Fee Related
-
2003
- 2003-03-25 AU AU2003227460A patent/AU2003227460A1/en not_active Abandoned
- 2003-03-25 WO PCT/CN2003/000216 patent/WO2003083415A1/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9395349B2 (en) | 2011-03-28 | 2016-07-19 | Weihai Haiher Technology Co. | Electrode structure and apparatus for use in measuring oil-water constituents |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003083415A1 (en) | 2003-10-09 |
| AU2003227460A1 (en) | 2003-10-13 |
| CN1375435A (en) | 2002-10-23 |
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Effective date of registration: 20151204 Address after: 264200, Weihai Town, Huancui District, Shandong City, Kunlun Province Patentee after: Weihai Wancheng Electronic Technology Co., Ltd. Address before: 264200, Shandong Weihai high tech Development Zone, Torch Building, No. 159, North building, attached building Patentee before: Haihe Science &. Technology Co., Ltd., Weihai |
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Granted publication date: 20050622 Termination date: 20160329 |