CN2272484Y

CN2272484Y - Flowmeter for oil well water filling

Info

Publication number: CN2272484Y
Application number: CN 96213056
Authority: CN
Inventors: 来惠民; 孙太升; 孙国峰
Original assignee: Individual
Current assignee: Lai Huimin; Sun Guofeng; Sun Taisheng
Priority date: 1996-04-30
Filing date: 1996-04-30
Publication date: 1998-01-14
Anticipated expiration: 2006-04-30

Abstract

The utility model relates to a flowmeter for filling water in an oil well, which is composed of a mechanical part and a circuit part. The utility model comprises a cylinder body, a float, a float connecting rod, an elastic element and a power supply, wherein, the upper end of the float connecting rod is connected with a cylindrical induction block; the induction block is positioned in an inductance coil; the inductance coil is connected with a measuring circuit. The utility model has strong functions and can be used for remote transmission, observation and record can be displayed on site, and data can be stored. Due to the adoption of indirect electron sensing measurement, the utility model has the advantages of easy sealing, simple structure, easy adjustment, easy manufacture and maintenance and wide application range, the action of the float is flexible, and the flow data are taken accurately.

Description

The oil well water injection flow meter

The utility model relates to a kind of magnetoelectric induction electronic type suspended body flowmeter amount device, is the flow meter that a kind of instrument, particularly oil-field flooding that is widely used in the measurement fluid flow used.

In industry, utilize the method for float measurement fluid flow very general, float is in trapezoidal reducing (transparent) cylindrical shell, difference according to flow, thereby changed the gap of float and cylindrical shell, float is moved up and down, the position of relative cylindrical shell when watching float to reach dynamic equilibrium with fluid, the flow of measurable flow body.By the length of adjusting cylindrical shell, diameter, conditions such as float size, weight are regulated measurement category.Make float reach dynamic equilibrium by the spring that is provided with on the float.Generally observe and write down the situation of change of flow at any time by operating personnel.For making the record serialization, developed the equipment that is connected with tape deck on the float, as shown in Figure 1 be to measure the Liao Dynasty's 76 type bottom hole float type flowmeters that the flushing amount is used in producing now, it is by the 01-rope socket, 02-rope socket joint, 03-clock machine, several most of compositions of 04-isolating joint, 05-float, 06-connecting rod, the 07-measuring spring, the 08-nib, 09-record-paper, 010-water inlet pipe, the 011-Taper Pipe, the 012-delivery port.When water filling, water promotes float and moves downward from top to bottom by Taper Pipe, and the drivening rod upper spring moves down, and when power reached balance, measuring spring indicated the flow of water this moment, and was recorded on the record-paper by nib.Along with the water injection rate change, on record-paper, constantly mark the recording curve of discharge.Need make the calibration curve that curve changes with water injection rate in advance.It is adopted by producing widely.But as can be seen from Figure, connecting rod (6) must very successfully rotate with float, and wants upper and lower smooth slip, under water injection pressure, also to keep sealing not leak, be very difficult, the record-paper in the recording mechanism, nib may be intake, and influence its precision and reliability, also need frequent maintenance, the flow signal can only record in addition, can not long-distance transmissions, can not realize immediate observation, the device construction of whole flow meter is very complicated, processing difficulties.

The utility model for the shortcoming of avoiding above-mentioned existence provide a kind of can recording occurring continuously and storage be beneficial to long-distance transmissions, the electronic flowmeter that is easy to make maintenance simple in structure again.

Oil well water injection flow meter of the present utility model comprises cylindrical shell, float, and the float connecting rod, flexible member, power supply is characterized in that the float small end is connected with cylindrical sensor block, and sensor block is arranged in inductance coil, and inductance coil is connected with measuring circuit.

The technical program drives sensor block by float with fluid motion, become the way of the corresponding signal of telecommunication by inductance, fluid both can be by entering above the float, also can below float, enter and move upward, do not influence measurement effect, before measuring, should demarcate the signal of telecommunication with the normal flow of detected fluid earlier, make the calibration maps that concerns between the signal of telecommunication-flow.The special-shaped diameter of Taper Pipe, the size of float, weight, spring performance, specification etc. all should be chosen with fluid properties, range of flow.The utility model can be measured water and other liquid and all gases, but should select the less fluid of viscosity.If the instantaneous change of flow is bigger, should consider the shaped design of float, as bullet.

The utility model has following advantage compared to existing technology: 1, owing to adopted the electronic type test, functional strong, it can on-the-spotly show observation and record, can be with the data storage in order to consulting, studying, can long-distance transmissions, in time understand the fluid flow situation for many ground of many people relevant personnel at any time.2, adopt indirect electronic induction to measure, very easily sealing, float is active in one's movements, and data on flows is taked accurately.3, the flow meter measuring device is simple in structure, easily regulates, and makes easily and overhauls, and is widely applicable.

For introducing the utility model in detail, describe below in conjunction with accompanying drawing:

Fig. 1 is distant 76 type float downhole flowmeter structural representations, and label wherein is respectively the 01-rope socket, 02-rope socket joint, 03-clock machine, 04-isolating joint, the 05-float, 06-float connecting rod, 07-measuring spring, 08-nib, the 09-record-paper, 010-water inlet, 011-Taper Pipe, 012-delivery port.

Fig. 2 is the frame for movement schematic diagram of the oil-field flooding flow meter of the utility model electronic type;

Fig. 3 is the circuit block diagram of injection flow meter;

Fig. 4 is the circuit diagram of microprocessor minimum system;

Fig. 5 is the circuit diagram of amplifier and analog-digital converter;

Fig. 6 is the circuit diagram of microprocessor house dog;

Fig. 7 is the circuit diagram of RS232 communication interface;

Fig. 8 is a power circuit diagram.

Referring to Fig. 2 and Fig. 3, oil well water injection flow meter of the present utility model comprises cylindrical shell 1, float 2, float connecting rod 3, flexible member 4, power supply 10, it is characterized in that float connecting rod 3 upper ends are connected with cylindrical sensor block 5, sensor block 5 is arranged in inductance coil 6, and inductance coil 6 is connected with measuring circuit 7.

Flow meter of the present utility model, change its frame for movement rarely, only tape deck of the prior art is changed into sensor block and inductance coil on the electricity, the advantage of bringing also is significantly, so the frame for movement that relates in the accompanying drawings part is all with the schematic form appearance of simplification.

Sensor block 5 wherein is preferably the soft iron heart, inductance coil 6 is preferably the helical tubular coil, be equipped with seal closure 8 at

cylindrical sensor block

5 and 6 of inductance coils, seal closure 8 is separated fluid and power supply and circuit part's phase-splitting jointly with sealing flange 81, need not seal between float connecting rod 3 and the seal closure 8, be the space that fluid can charge into cylindrical sensor block 5 places, the structure of flow meter is simplified greatly, and precision also can improve greatly.

Referring to Fig. 3, the measuring circuit 7 of flow meter of the present utility model comprises oscillation power 71 and amplifier 72, oscillation power is to inductance coil 6 power supplies, the input signal of amplifier is taken from the centre cap 61 of inductance coil 6, centre cap 61 can be one, as shown in Figure 3, centre cap 61 also can be two, does not promptly overlap with two input endpoints of oscillation power 71.Be connected with analog-digital converter 10, microprocessor minimum system 9, output interface 11 at amplifier 72 outputs.

Referring to Fig. 4, microprocessor minimum system 9 comprises microprocessor 91, program storage 92, data storage 93, wherein on the P1 of microprocessor 91 mouth, be connected with EEPROM (electrically-erasable memory) 94, be used for store data, the circuit of microprocessor portion can be with reference to the technology of single-chip microcomputer aspect, and CPU wherein adopts the 80C31 single-chip microcomputer.

Fig. 5 is used to amplify signal from inductance coil for the LM358 double operational, analog-digital converter 10 is the ADC0809 chip, model provides sampled clock signal for analog-digital converter 10, chip U8A, U9A for the chip U6A of 74HC393, U8B, U9B provides decoded signal from CPU for analog-digital converter 10, and Fig. 6 is the circuit diagram of microprocessor house dog, for CPU provides reset signal, Fig. 7 is wherein a kind of circuit diagram of output interface, the i.e. circuit diagram of RS232 communication interface; Be connected with the RXD mouth with the TXD of CPU; Fig. 8 is a power circuit diagram.

Interconnect between Fig. 4-Fig. 8,, just they are resolved into several accompanying drawings for knowing its circuit structure of expression in the accompanying drawings.

Claims

1, a kind of oil well water injection flow meter, comprise cylindrical shell (1), float (2), float connecting rod (3), flexible member (4), power supply (70) is characterized in that float connecting rod (3) upper end is connected with cylindrical sensor block (5), sensor block (5) is arranged in inductance coil (6), and inductance coil (6) is connected with measuring circuit (7).

2, oil well water injection flow meter according to claim 1 is characterized in that above-mentioned sensor block (5) is the soft iron heart.

3, oil well water injection flow meter according to claim 1 is characterized in that above-mentioned inductance coil (6) is the helical tubular coil.

4, oil well water injection flow meter according to claim 1 is characterized in that being equipped with seal closure (8) between above-mentioned cylindrical sensor block (5) and inductance coil (6).

5, oil well water injection flow meter according to claim 1, it is characterized in that above-mentioned measuring circuit (7) comprises oscillation power (71) and amplifier (72), oscillation power is to inductance coil (6) power supply, and the input signal of amplifier is taken from the centre cap (61) of inductance coil (6).

6, oil well water injection flow meter according to claim 5 is characterized in that centre cap (61) is one.

7, oil well water injection flow meter according to claim 5 is characterized in that centre cap (61) is two.

8, oil well water injection flow meter according to claim 5 is characterized in that being connected with analog-digital converter (10), microprocessor minimum system (9), output interface (11) at amplifier (72) output.

9, oil well water injection flow meter according to claim 8 is characterized in that microprocessor minimum system (9) comprises microprocessor (91), program storage (92), data storage (93).

10, oil well water injection flow meter according to claim 8 is characterized in that analog-digital converter (10) is ADC0809.