WO2003083415A1 - Detecteur de niveau multiphase - Google Patents

Detecteur de niveau multiphase Download PDF

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Publication number
WO2003083415A1
WO2003083415A1 PCT/CN2003/000216 CN0300216W WO03083415A1 WO 2003083415 A1 WO2003083415 A1 WO 2003083415A1 CN 0300216 W CN0300216 W CN 0300216W WO 03083415 A1 WO03083415 A1 WO 03083415A1
Authority
WO
WIPO (PCT)
Prior art keywords
poles
sub
cable
electrically connected
level sensor
Prior art date
Application number
PCT/CN2003/000216
Other languages
English (en)
Chinese (zh)
Inventor
Qiming Wang
Yize Sun
Fuwen Wang
Chunhe Li
Wenqi Li
Guangdong Hu
Original Assignee
Qiming Wang
Yize Sun
Fuwen Wang
Chunhe Li
Wenqi Li
Guangdong Hu
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qiming Wang, Yize Sun, Fuwen Wang, Chunhe Li, Wenqi Li, Guangdong Hu filed Critical Qiming Wang
Priority to AU2003227460A priority Critical patent/AU2003227460A1/en
Publication of WO2003083415A1 publication Critical patent/WO2003083415A1/fr

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Classifications

    • 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

Definitions

  • the invention relates to a measuring device, in particular to a multi-phase material level sensor capable of measuring a full range of crude oil, sewage, and sediment in an oil storage tank. Background technique
  • crude oil produced from oil wells in the oil field is qualified commercial crude oil after depuration and dehydration processes, and is injected into various oil storage tanks for external transportation or transfer. Due to incomplete impurity removal and dehydration, over time, a thick layer of sludge will be deposited on the bottom of the oil storage tank, and there will be a section of sewage on it, and crude oil will be on the sewage. Because the oilfield needs to know the production of the oil production plant at any time, it is necessary to regularly measure the oil storage capacity. However, the current measurement method is to manually climb up the oil tank and use a rope or a tape measure to hang a heavy object from the artificial mouth to measure the amount of oil, which is laborious and inaccurate.
  • the present invention provides a multi-phase level sensor, which can not only detect the position of the oil-water interface in the oil storage tank, but also The level of sewage and sediment is measured in a full range and with high accuracy.
  • the technical solution adopted by the present invention to solve its technical problems is: a capacitance transmitter and a connection body are provided, and the technical features are that an inner insulation sleeve is provided on the outside of the connection body, and a plurality of tubular metal sub-poles are provided on the outside of the inner insulation sleeve. An insulating layer is provided between two adjacent sub-poles.
  • All the sub-poles are covered with an outer insulation sleeve, and the inner cavity of the inner insulation sleeve is provided with a cable.
  • the sub-poles are electrically connected to the capacitor transmitter through the cable.
  • the inner cavity of the inner insulation sleeve is provided with a module.
  • the function of the module is to connect all metal sub-poles to the capacitor transmitter through the module and a limited number of wires, and to realize the time-division measurement of each metal sub-pole under the control of the capacitor transmitter.
  • the module is composed of multiple analog switches and a shift register.
  • the data output terminal of the shift register is electrically connected to the strobe terminal of the multiple analog switch, and the output terminals of the multiple analog switch are respectively electrically connected to multiple poles adjacent to each other.
  • the control end of the shift register is electrically connected to the cable via a wire.
  • the module can also be composed of multiple analog switches and decoders. The multiple analog switches and decoders are electrically connected to each other. The data output end of the decoder is electrically connected to the multiple analog switch gating control end. By connecting the necessary expansion chip, the decoder It can be connected with multiple analog switches, the output ends of the multiple analog switches are respectively connected to adjacent multiple sub-poles, and the control end of the decoder is electrically connected to the cable via a wire. The sub-poles are electrically connected to the cable wires through the wires.
  • the connection body is a rigid pipe.
  • the connecting body can also be a steel cable.
  • the inner insulation sleeve is composed of multiple sections of inner insulation tubes connected in series. Both ends of the inner insulation tube are provided with a mortar head and a mortar bowl. A mortar is used between the ends of the adjacent two sections of the inner insulation tube. The head and the mortar bowl are structurally matched. The mortar head and the mortar bowl are respectively processed with a cable hole and a steel cable hole. Several steel cables pass through the steel cable hole in the inner insulation tube to form the main poles of the sub-poles and the tank of the oil storage tank. The body is the other pole, which constitutes a variable dielectric capacitor. By measuring the capacitance value between each pole and the tank, it can be determined what the medium is at the pole position, and the position of the oil-water interface can be accurately found.
  • the beneficial effect of the invention is that the position of the oil-water interface can be measured accurately and in real time, and at the same time, the full range measurement of crude oil, pollution and sediment levels in multiphase materials can be performed, the structure is simple, and Multiphase materials between the main pole and the tank Short circuit.
  • FIG. 1 is a schematic diagram of the overall structure of the present invention.
  • Fig. 2 is a partial longitudinal sectional structural view of a main pole of the first embodiment of the present invention.
  • Fig. 3 is a partial longitudinal sectional structural view of a main pole according to the second and third embodiments of the present invention.
  • Fig. 4 is a circuit diagram of a module in the second embodiment.
  • FIG. 5 is a schematic diagram of a connection relationship between a module, a cable, and a pole in the second embodiment.
  • Fig. 6 is a circuit schematic diagram of a module in a third embodiment.
  • FIG. 7 is a schematic diagram of a connection relationship between a module, a cable, and a pole in a third embodiment.
  • capacitor transmitter 2. flange, 3. upper insulator, 4. polarizer, 5. outer insulation sleeve, 6. lower insulation sleeve, 7. cable, 8. insulation layer, 9. connection Body, 10. module, 11. wire, 12. inner insulation sleeve, 13. outer insulation sleeve, 14. decoder, 15. multi-channel analog switch, 16. capacitor signal line, 17. coded signal line, 18. power line , 19. Power ground, 20. Capacitive signal line, 21. Serial data input line, 22. Serial clock line, 23. Power line, 24. Power line, 25. Shift register, 26. Multiple analog switch 27. Serial data output lines, C001, C002, C003, C011, C012, C013, C021, C022, C023 are polarized. detailed description
  • the metal main pole of the present invention is composed of a plurality of tubular metal sub-poles (4) connected in series to a connecting body (9) wrapped with an inner insulation sleeve (12) on the outside, and the inner insulation sleeve ( The main purpose of 12) is to isolate each sub-pole (4) from the connecting body (9) and other conductive parts.
  • An insulating layer (8) is provided between two adjacent sub-poles (4), and the connecting body ( 9)
  • the inner cavity is provided with a cable (7), and an outer insulation sleeve (13) is provided around the outside of the main pole.
  • the main function of the outer insulation sleeve (13) is to connect the sub-poles (4) and the entire sensor to the measured conductivity.
  • the medium (such as water) is isolated.
  • the upper and lower ends of the main metal pole are respectively provided with an upper insulator (3) and a lower insulator (6).
  • the upper end of the main pole is fixed on the flange (2) and the flange (2).
  • Capacitor transmitter (1) is fixed via insulator (3), flange (2) is insulated
  • the edge pad and the oil storage tank are insulated and fixed, and the main pole and the tank wall of the oil storage tank are respectively one pole of a capacitor.
  • the connecting body (9) is a flexible steel cable, and the steel cable is located in the inner cavity of the inner insulation sleeve (12).
  • the inner insulation sleeve (12) is composed of a plurality of serially connected inner wires.
  • the two ends of the inner insulating tube are provided with a mortar head and a mortar bowl.
  • the ends of the two adjacent inner insulation tubes are matched with a mortar head and a mortar bowl.
  • the mortar head and the mortar bowl are respectively processed with cable holes.
  • steel cable holes several steel cables pass through the steel cable in the inner cavity of the insulation tube to connect the sections of the insulation tube in series, and the steel cables are tightened and fixed at both ends of the main pole, so that the insulation tubes in each section are tight. Tightly stuck together.
  • the inner insulating sleeve (12) is sleeved with a tubular metal sub-pole (4) with a number of not less than nine sections, and an insulating layer (8) is provided between two adjacent sub-poles (4) to surround the sub-poles (4).
  • An outer insulating sleeve (13) is provided on the outside, and a cable (7) is provided in the inner cavity of the inner insulating sleeve (12).
  • the upper end of the cable (7) is connected to the capacitor transmitter (1), and the cable (7) It is composed of multiple wires, each wire is only electrically connected to one sub-pole (4), and a weight body is fixed on the lower insulator (6) at the lower end of the main pole, so that the flexible main pole is always in a vertical state.
  • the capacitance transmitter (1) is successively connected to each sub-pole (4) on the main pole, and at the same time when a sub-pole (4) (such as: C001) is turned on , And other sub-poles (4) (such as: C002, C003, C011, C012, C032, C033) are kept disconnected. After each sub-pole (4) is turned on, it is recorded in the memory by the capacitor transmitter (1). After the capacitance values of all the sub-poles (4) are measured, the capacitance transmitter (1) performs centralized processing on the data.
  • a sub-pole (4) such as: C001
  • other sub-poles (4) such as: C002, C003, C011, C012, C032, C033
  • the measured capacitance value depends only on the nature of the medium between the two poles. Specifically, it is what medium is recharged and the dielectric coefficient of the medium (air, The relative dielectric constants of crude oil, sludge, and water are 1.0, 3.0-5.0, 40-60, 80 respectively.
  • the corresponding software is used to Systematic analysis and analysis of each measured split capacitor Li, you can know the distribution of materials in a large tank.
  • the inner insulation sleeve (12) of the connecting body (9) is provided with a plurality of modules (10) in the inner cavity, Each module (10) is electrically connected to several sub-poles (4) around it, and the control ends of all modules (10) are sequentially connected together to several wires of the cable (7).
  • the blocks (10) are all connected to the same wires in the cable (7), thereby greatly reducing the number of wires in the inner insulation sleeve (12) and the cavity cable (7).
  • each module (10) consists of a serial encoder / decoder (14) (such as: V05027, etc.) and several multi-channel analog switches (15) (such as: CD4066, etc.) and the necessary peripheral auxiliary Component composition.
  • the data output of the decoder (14) is electrically connected to the multiplex analog switch
  • the strobe control terminal of (15), the output terminal of the multi-channel analog switch (15) is connected to the adjacent metal sub-poles (4), and the first multi-channel analog switch (15) is connected to the C001, C002, and C003 points. Pole, the second multiplex analog switch (15) is connected to C011, C012, C013, and the third multiplex analog switch (15) is connected to C021, C022, C023.
  • Each module (10) also leads to four counties, and is connected to the four wires in the cable (7) connected by the capacitor transmitter (1), which are the capacitor signal wires (16) (and the module The input terminals X, Y, and Z of all multi-channel analog switches are connected), the coding signal line (17) (connected to the data input terminal of the decoder), the power supply line (18) (connected to the power pins of all integrated blocks of the module) 1. Power ground wire (19) (connected to the power ground pins of all integrated blocks in the module).
  • the specific working process is that the encoder / decoder (14) of each module (10) has its own unique address A1-A8, A1-A8 can be encoded in advance by grounding, power supply, and floating.
  • the encoded signal sent by the capacitance transmitter (1) includes 8-bit address and 4-bit data (different pulse duty cycles and combinations to indicate different logic states).
  • the 4-bit data in the encoded signal will be latched to the data output of the decoder (14) of the module (10), and then output to the multi-channel analog switch integration
  • the gate control terminal of the block (15) controls a certain sub-pole (4) (such as C001) connected to it to realize electrical connection with the capacitor signal line (16), and the other sub-poles (C002, C003, C011> C012> C013, C021, C022, C023) and the capacitor signal line (16) are still disconnected.
  • a certain sub-pole (4) such as C001
  • the coding signal line (17), the power supply line (18) and the power ground line (19) are connected to the four wires in the cable line (7) respectively.
  • the third embodiment shown in Figs. 3, 6, and 7 is the same as the second embodiment.
  • the module (10) consists of a shift register (25) (eg: 74LS164) and several (eg: one) multiplex analog switches (26) (eg: 4066) and necessary peripheral auxiliary components.
  • the shift register The data output terminals (QO-Q7) of (25) are connected to the gating control terminals (A, B, C) of the multi-channel analog switch (26),
  • the outputs of the multi-channel analog switches (26) of the three modules are respectively connected to adjacent metal sub-poles C001, C002, C003> C011, C012, C013, C021, C022, C023, and each module (10) leads 5
  • the wires are connected to the corresponding wires in the cable (7) connected to the capacitor transmitter (1), which are the capacitor signal wires (20).
  • serial data input line (21) (extracted from the serial data input pin of the shift register), serial clock line (22 ) (From the clock pins of the shift register), power line (23) (connected to the power pins of all the integrated blocks in the module), power ground (24) (connected to the power ground pins of all the integrated blocks in the module) Connected), in addition, there is a serial data output line
  • the cable (7) in this embodiment only needs to include 5 wires (11) to select and control all the sub-poles.
  • the connecting body (9) of the present invention may also be a rigid structure, that is, the connecting body (9) is a rigid pipe, an inner insulating sleeve (12) is provided on the outside of the rigid pipe, and the cable (7) is located in the rigid pipe. Inner cavity, no weight body is needed at the lower end of the rigid main pole.

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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

L'invention concerne un détecteur de niveau multiphase relevant du domaine de la détection. Un objet de l'invention est d'obtenir un détecteur capable non seulement de détecter une interface huile-eau dans un réservoir, mais aussi de détecter avec précision une vaste gamme de niveaux de pétrole brut, d'eaux d'égouts, de boue et de sable. Ce détecteur est pourvu d'un transducteur de capacité et d'un corps de connexion. L'invention se caractérise en ce qu'on utilise une gaine isolante intérieure disposée à l'extérieur du corps de connexion, une pluralité de sous-tiges métalliques tubulaires montées à l'extérieur de la gaine isolante intérieure, des couches isolantes montées entre des sous-tiges adjacentes, une gaine isolante extérieure entourant l'extérieur des sous-tiges, ainsi que des câbles disposés à l'intérieur du corps de connexion, et par lesquels les sous-tiges sont connectées au transducteur de capacité.
PCT/CN2003/000216 2002-03-29 2003-03-25 Detecteur de niveau multiphase WO2003083415A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227460A AU2003227460A1 (en) 2002-03-29 2003-03-25 A multiphase level sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN02110211.2 2002-03-29
CN 02110211 CN1207540C (zh) 2002-03-29 2002-03-29 多相料位传感器

Publications (1)

Publication Number Publication Date
WO2003083415A1 true WO2003083415A1 (fr) 2003-10-09

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Application Number Title Priority Date Filing Date
PCT/CN2003/000216 WO2003083415A1 (fr) 2002-03-29 2003-03-25 Detecteur de niveau multiphase

Country Status (3)

Country Link
CN (1) CN1207540C (fr)
AU (1) AU2003227460A1 (fr)
WO (1) WO2003083415A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721802B2 (en) 2007-02-23 2010-05-25 Warren Michael Levy Fluid level sensing device and methods of using same
CN102052952A (zh) * 2010-11-18 2011-05-11 陕西科技大学 一种原油储罐油水界面测量装置及其测量方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102959391B (zh) * 2011-03-28 2014-10-29 威海海和科技有限责任公司 一种用于油水组分测量的电极结构和装置
CN102818605A (zh) * 2012-02-25 2012-12-12 威海海和科技有限责任公司 耐高温高压分段电容式物位变送器
CN105784062B (zh) * 2016-04-13 2018-11-06 辽宁科技大学 一种物料仓中物位高度的检测方法及装置
CN106643975A (zh) * 2016-11-11 2017-05-10 上海沃纳机电设备有限公司 分体电极连续料位计及其测量方法
CN112729051A (zh) * 2020-12-08 2021-04-30 广东化一环境科技有限公司 介质厚度检测设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943889A (en) * 1989-07-03 1990-07-24 Naoyuki Ohmatoi Electrostatic capacitor type sensing device
US5103368A (en) * 1990-05-07 1992-04-07 Therm-O-Disc, Incorporated Capacitive fluid level sensor
CN2341131Y (zh) * 1998-06-19 1999-09-29 耿连瑞 一种原油贮罐的全范围检测装置
CN1276518A (zh) * 2000-06-22 2000-12-13 威海北洋电气集团股份有限公司仪器分公司 管式柔性料位传感器
CN2432565Y (zh) * 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 连续电容传感器
CN2480818Y (zh) * 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 柔性准分段电容料位传感器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943889A (en) * 1989-07-03 1990-07-24 Naoyuki Ohmatoi Electrostatic capacitor type sensing device
US5103368A (en) * 1990-05-07 1992-04-07 Therm-O-Disc, Incorporated Capacitive fluid level sensor
CN2341131Y (zh) * 1998-06-19 1999-09-29 耿连瑞 一种原油贮罐的全范围检测装置
CN1276518A (zh) * 2000-06-22 2000-12-13 威海北洋电气集团股份有限公司仪器分公司 管式柔性料位传感器
CN2432565Y (zh) * 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 连续电容传感器
CN2480818Y (zh) * 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 柔性准分段电容料位传感器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721802B2 (en) 2007-02-23 2010-05-25 Warren Michael Levy Fluid level sensing device and methods of using same
US8109332B2 (en) 2007-02-23 2012-02-07 Warren Michael Levy Method of optimizing production of a well
US8662168B2 (en) 2007-02-23 2014-03-04 Warren Michael Levy Method of determining a level of a fluid in a well
CN102052952A (zh) * 2010-11-18 2011-05-11 陕西科技大学 一种原油储罐油水界面测量装置及其测量方法

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Publication number Publication date
AU2003227460A1 (en) 2003-10-13
CN1207540C (zh) 2005-06-22
CN1375435A (zh) 2002-10-23

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