CN2811995Y - Electrode type oil-water interface transducer - Google Patents

Abstract

The utility model discloses an electrode type oil-water interface transducer and is composed of an acquisition main plate 1, a data line bundle 2, annular input electrodes 3, an output electrode 4 and an explosion preventing outer shell 6, wherein the acquisition main plate 1 is fixed in the explosion preventing outer shell 6. The lower end of the explosion preventing outer shell 6 is fixed with an upper flange disk 7. The upper end of data line bundle 2 is connected with the acquisition main plate 1, and the number of single line heads drawn from the lower end of the data line bundle 2 is 2-96. The single line heads successively penetrate in a tubular plastic connector 5, and each single line head on the inner side wall of the tubular plastic connector 5 is respectively connected with corresponding annular input electrodes 3. One single line head on the top end of the tubular plastic connector 5 is connected with the output electrode 4, and the output electrode 4 is embedded on the lower port of the tubular plastic connector 5. The electrode type oil-water interface transducer has the advantages of novel design, strong interference resisting capability, higher detection accuracy, convenient use, safety and reliability.

Description

Electric pole type water-oil interface transmitter

Technical field

The utility model relates to a kind of water-oil interface pick-up unit, and especially a kind of electric pole type water-oil interface transmitter is mainly used in the detection of water-oil interface in oil and the chemical system thereof.

Technical background

In Petroleum Production, need a large amount of storage tank, and the measurement of water-oil interface and oil level is very important in the fluid reservoir, it is related to the security of production and to the accurate metering of crude production, processing, outer throughput rate, to the metering of crude oil in the storage tank, the overwhelming majority still adopts measuring method manually, complex operation, degree of accuracy is low, especially under the harsh climate condition, often brings unsafe factor to survey crew.Along with the development of oil field state-of-the-art technology, the accurate measurement of water-oil interface is more and more seemed important.Present water-oil interface measurement mechanism has multiple mode, mainly adopts float-ball type, common condenser type and radio frequency admittance formula water-oil interface pick-up unit.Float-ball type water-oil interface pick-up unit is because there is mechanical motion, and when oil ratio was thicker, float was often stuck, caused false interface, causes mistake to be surveyed; Common capacitance Oil vs Water Boundary Detecting pick-up unit is relatively poor to the antijamming capability of environment, and because of the specific inductive capacity that is subjected to medium and environment, temperature, humidity etc. influence, its precision instability is difficult to adapt to complicated measurement environment; The measuring principle of radio frequency admittance formula water-oil interface pick-up unit is still condenser type, and require the medium specific inductive capacity should keep inconvenience, otherwise measure inaccurate, because of the complicated component of crude oil, and the impurity content variation range is big, and there is bigger error in the water-oil interface that cause measuring; The water-oil interface sensor that employing ultrasound wave that also has or reflection of electromagnetic wave principle are made, this sensor is because oil tank liquid level top is a rough fixed block surface of condensing, ripple is produced different scatterings, the emission acceptable effect is poor, if strengthen emissive power, then production difficulty strengthens, the cost height; What also have uses conductive sensor, constitute by gathering mainboard, data wire harness, explosion-resistant enclosure and two electrodes, it puts into crude oil storage tank with two electrodes, because oil is different with resistivity of water, so resistance will change when two electrodes pass the interface, thereby measure the position at interface, but when water-oil interface are thicker, then be difficult to accurately detect the position of determining its interface.

Summary of the invention

The purpose of this utility model is to provide a kind of deficiency that overcomes above technology, and is strong to the antijamming capability of environment, accuracy of detection is high and cheap, easy to use, reliability and all higher electric pole type water-oil interface transmitter of security.

For reaching above purpose, the technical scheme that the utility model adopted is: this electric pole type water-oil interface transmitter, by gathering mainboard, the data wire harness, the ring-type input electrode, output electrode, explosion-resistant enclosure constitutes, gathering mainboard is fixed in the explosion-resistant enclosure, the fixing upper flange plate in the lower end of explosion-resistant enclosure, the upper end of data wire harness is connected with the collection mainboard, it is characterized in that the single line head that extract out data wire harness lower end is provided with 2-96, and penetrate in the tubular plastic joint successively, every single line head on the tubular plastic joint madial wall is connected with corresponding ring-type input electrode respectively, a single line head on its top is connected with output electrode, output electrode is embedded on the end opening of tubular plastic joint, because the electrical conductivity of oil and water differs bigger, resistance difference in oil and water between output electrode and the ring-type input electrode is very big, by measuring the resistance value between output electrode and the ring-type input electrode, just can judge tested water-oil interface, and transfer to the collection mainboard and show.The utility model is also implemented by following measure: the length of described tubular plastic joint is 60-70cm, diameter is 3-5cm, on the outer wall of tubular plastic joint, establish a stripper loop every 4-6cm, stripper loop is equidistant the arrangement, suit ring-type input electrode between adjacent stripper loop, the data wire harness welds in wire guide and ring-type input electrode that every single line head on the tubular plastic joint madial wall passes respectively between the corresponding stripper loop, each ring-type input electrode is a sampled point, the ring-type input electrode is established 1-96, just sampled point is established 1-96, the sampled point that is provided with is intensive more, and it is big more to measure total liquid range, and precision is high more; Described collection mainboard comprises expansion collecting circuit board and centric acquisition treatment circuit plate, is provided with 48 acquisition interface, switch control bus, 48 electrodes connection lead-in wires on the expansion collecting circuit board; On centric acquisition treatment circuit plate, be provided with DSB data store block, bus communication, power bus, CPU Acquisition Processor, switch control bus, A/D conversion collection block, 48 electrodes and connect lead-in wire and mainboard 48 acquisition interface, isolated from power, power supply and communication connection terminal, communication bus the expansion collecting circuit board, be existing technology, so seldom describe.Convert the resistance signal that collects to voltage signal, convert digital signal to by A/D conversion collection block again, through the computing of CPU Acquisition Processor, analysis, form the water-oil interface value, and be real-time transmitted to Computer Processing by the RS-485 signal.

The beneficial effects of the utility model are: compare with the water-oil interface transmitter of present use, and modern design, antijamming capability is strong, and accuracy of detection is higher, and cheap, and is easy to use, safe and reliable.

Description of drawings

Fig. 1 is the utility model structure cross-sectional schematic vertically.

Fig. 2 arranges synoptic diagram for the utility model expansion collecting circuit board.

Fig. 3 is that the utility model centric acquisition treatment circuit plate is arranged synoptic diagram.

Embodiment

Make the utility model with reference to accompanying drawing 1,2,3.This electric pole type water-oil interface transmitter, by gathering mainboard 1, data wire harness 2, ring-type input electrode 3, output electrode 4, explosion-resistant enclosure 6 constitutes, gathering mainboard 1 is fixed in the explosion-resistant enclosure 6, the fixing upper flange plate 7 in the lower end of explosion-resistant enclosure 6, the upper end of data wire harness 2 is connected with collection mainboard 1, the single line head that extract out data wire harness 2 lower ends is provided with 2-96, and penetrate successively in the tubular plastic joint 5, every single line head on tubular plastic joint 5 madial walls is connected with corresponding ring-type input electroplax 3 respectively, a single line head on its top is connected with output electrode 4, and output electrode 4 is embedded on the end opening of tubular plastic joint 5.The length of described tubular plastic joint 5 is 60-70cm, diameter is 3-5cm, on the outer wall of tubular plastic joint 5, establish a stripper loop 51 every 4-6cm, stripper loop 51 is equidistant the arrangement, suit ring-type input electrode 3 between adjacent stripper loop 51, data wire harness 2 welds with ring-type input electrode 3 at the wire guide 52 that every single line head on tubular plastic joint 5 madial walls passes respectively between the corresponding stripper loop 51, each ring-type input electrode 3 is a sampled point, ring-type input electrode 3 is established 1-96, and just sampled point can be established 1-96; Described collection mainboard 1 comprises expansion collecting circuit board 11 and centric acquisition treatment circuit plate 12, is provided with 48 acquisition interface 11a, switch control bus 11b, 48 electrodes connection lead-in wire 11c on expansion collecting circuit board 11; On centric acquisition treatment circuit plate 12, be provided with DSB data store block 12a, bus communication 12E, L, power bus 12c, CPU Acquisition Processor 12d, switch control bus 12f, A/D conversion collection block 12G, 48 electrodes and connect lead-in wire 12k and mainboard acquisition interface 12M, isolated from power 12N, power supply and communication splicing ear 12H, communication bus 12s at 48 expander board 11.Convert the resistance signal that collects to voltage signal, convert digital signal to by A/D conversion collection block 12G again, through CPU Acquisition Processor 12d computing, analysis, form the water-oil interface value, and be real-time transmitted to Computer Processing by the RS-485 signal.

Claims (2)

1, a kind of electric pole type water-oil interface transmitter, by gathering mainboard (1), data wire harness (2), ring-type input electrode (3), output electrode (4), explosion-resistant enclosure (6) constitutes, gathering mainboard (1) is fixed in the explosion-resistant enclosure (6), the fixing upper flange plate (7) in the lower end of explosion-resistant enclosure (6), the upper end of data wire harness (2) is connected with collection mainboard (1), it is characterized in that the single line head that extract out data wire harness (2) lower end is provided with 2-96, and penetrate successively in the tubular plastic joint (5), every single line head on tubular plastic joint (5) madial wall is connected with corresponding ring-type input electroplax (3) respectively, a single line head on its top is connected with output electrode (4), and output electroplax (4) is embedded on the end opening of tubular plastic joint (5).

2, electric pole type water-oil interface transmitter according to claim 1, the length that it is characterized in that described tubular plastic joint (5) is 60-70cm, diameter is 3-5cm, on the outer wall of tubular plastic joint (5), establish a stripper loop (51) every 4-6cm, stripper loop (51) is equidistant the arrangement, suit ring-type input electrode (3) between adjacent stripper loop (51), the every piece single line head of data wire harness (2) on tubular plastic joint (5) madial wall passes the wire guide (52) and ring-type input electrode (3) welding between the corresponding stripper loop (51) respectively, and ring-type input electrode (3) is established 1-96.

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