CN200961480Y

CN200961480Y - Non-invasive type capacitance oil medium sensor

Info

Publication number: CN200961480Y
Application number: CN 200620093809
Authority: CN
Inventors: 杨敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-23
Filing date: 2006-10-23
Publication date: 2007-10-17
Anticipated expiration: 2016-10-23

Abstract

The utility model relates to an oil medium sensing detector in the oil field extraction well wireless monitoring system; wherein adding the detecting function of oil content data of the product to the oil field extraction well wireless monitoring system helps to completely understand the quality situation of each oil well and crude oil. The utility model is a non-intrusive capacitance oil medium sensor, wherein a semi-circle card which is used as a capacitance earth electrode and an outer hoop of a sensor shell are fixedly assembled on the detected tube body, a sensing inner core which is provided with two capacitance detecting electrodes inside is fixedly assembled inside the sensor shell, and the two capacitance detecting electrodes, the semi-circle card which is used as the earth electrode and the sensor shell constitute a variable medium sensing capacitance. Employing the capacitance medium sensor structure of outer clip-on detected tube line, based on the unchanged detected crude oil tube line, the non-intrusive capacitance oil medium sensor realizes the oil content detection of crude oil. The utility model is assembled and disassembled conveniently and operates reliably.

Description

Non-intervention type capacitor oil medium sensor

Affiliated technical field:

The utility model relates to the oily medium sensing detection device in the oil well wireless supervisory control system.

Background technology

The wireless network communication mode that can be designed as the oil well wireless supervisory control system realizes the communication transmission control of center machine and each terminal unit.If will realize multi-faceted fully automatic system Monitoring and Controlling management, the sensor that multiple class just must be set is gathered on the spot and is detected producing well mechanism operation duty, wherein set up output product oil content Data Detection function, help each oil well situation, oil recovery process, oil field quality, go out aspects such as oil quality and fullyed understand and grasp.Existing medium detecting sensor is medium insertion type sensor, and its complex structure also need be changed pipeline road, gives maintenance simultaneously, safeguards and bring very big difficulty.

The utility model content

Goal of the invention of the present utility model is to provide a kind of non-intervention type capacitor oil medium sensor that its oily medium detects of realizing in the oil well wireless supervisory control system under the prerequisite that does not change existing producing well output pipe.The non-intervention type capacitor oil medium sensor technical scheme that the utility model provides, its major technique content is: a kind of non-intervention type capacitor oil medium sensor, include semicircle card and sensor housing as the capacity earth electrode, fixedly be assemblied in the sensing inner core that is provided with the built-in capacitance measurement electrode in the sensor housing, sensor housing bottom and semicircle card make-up, fixed cover are loaded on tested tube wall; Two capacitance measurement electrodes are parallel, the symmetrical non-conducting material that fixedly places in the sensing inner core ectosome of center line, constitute variable medium sensing capacitance with semicircle card and sensor housing as earthing electrode, sensing inner core outer end is provided with closing cover, connects two capacitance measurement electrodes and is provided with H cable.

In the oil well wireless supervisory control system, non-intervention type capacitor oil medium sensor of the present utility model has adopted the outer capacitor dielectric sensor construction that clamps the measured tube road, on the basis that does not change tested untreated oil line, realized that the oily crude amount detects, its installation, convenient disassembly, reliable operation.

Description of drawings

Fig. 1 is the circuit theory diagrams that detect the utility model non-intervention type capacitor oil medium sensor transducing signal

Fig. 2 is the mounting structure sectional view of this non-intervention type capacitor oil medium sensor

Fig. 3 is the A-A sectional drawing of Fig. 2.

The specific embodiment

As shown in Figures 2 and 3, non-intervention type capacitor oil medium sensor of the present utility model is designed to be installed in the outer yoke configurations of tested pipeline, and design is as two half-bridge sensing capacitance C1 in the full-bridge transducing signal detecting circuit _※, C2 _※, its structure construction is: this non-intervention type capacitor oil medium sensor includes as the semicircle card 1 of capacity earth electrode and sensor housing 2, fixing assembling sensing inner core in the sensor housing 2; Sensor housing 2 bottom spiral-locks are in tested body 18 outer walls, fasten, dock fixed cover and be loaded on the tested body 18 relatively with semicircle card 1, are provided with gasket ring 7 between the tested body 18 of both and spiral-lock.Two capacitance measurement electroplaxs, the 5 parallel and symmetrical non-conducting materials 4 that fixedly place in the sensing inner core ectosome 3 of center line, the sensing inner core is inserted in the sensor housing 2, fixing by side direction trip bolt 8, then two capacitance measurement electrodes 5 have constituted the variable medium sensing capacitance C1 that responds to tested pipeline media variations with semicircle card 1 and sensor housing 2 as earthing electrode respectively _※, C2 _※The outer end of sensing inner core is fixed with closing cover 6, is connected in two capacitance measurement electrodes 5 and is provided with H cable 9, and H cable 9 is fixedly connected on the capacitance measurement electrode 5 by button-headed screw 16, and cable passes closing cover 6 and realizes being electrically connected.As shown in Figure 1, two variable medium sensing capacitance C1 _※, C2 _※Constituted the ac capacitor inductance bridge with two standard capacitor C1, C2, make in the debugging this electric bridge under the reference fluid state balance, be output as zero, when the medium in the measured tube changes, capacitor dielectric sensor C1 _※, C2 _※Capacity changes thereupon, and electric bridge disequilibrium output and the linear transducing signal of crude oil WATER AS FLOW MEDIUM content are amplified through second amplifying circuit, is converted to the signal of telecommunication of 0-5V through converter, again through A/D translation data passage, sends into microcomputer and carries out data and handle.

Claims

1. non-intervention type capacitor oil medium sensor, it is characterized in that it includes semicircle card (1) and sensor housing (2) as the capacity earth electrode, fixedly be assemblied in the sensing inner core that is provided with the built-in capacitance measurement electrode in the sensor housing (2), sensor housing bottom and semicircle card (1) make-up, fixed cover are loaded on tested body (18) outer wall; Two capacitance measurement electroplaxs (5) are parallel, the symmetrical non-conducting material (4) that fixedly places in the sensing inner core ectosome (3) of center line, with semicircle card (1) and the variable medium sensing capacitance (C1 of sensor housing (2) formation as earthing electrode _※, C2 _※), sensing inner core outer end is provided with closing cover (6), connects two capacitance measurement electrodes and is provided with H cable (9).