CN201926705U

CN201926705U - Portable electric parameter detector for pumping unit

Info

Publication number: CN201926705U
Application number: CN2011200179545U
Authority: CN
Inventors: 王明才; 汪祥林; 吴利文; 潘国辉
Original assignee: China Petroleum and Chemical Corp; Sinopec Jiangsu Oilfield Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Jiangsu Oilfield Co
Priority date: 2011-01-20
Filing date: 2011-01-20
Publication date: 2011-08-10
Anticipated expiration: 2021-01-20

Abstract

The utility model relates to a measuring device for oil field, in particular to a portable electric parameter detector for a pumping unit. The portable electric parameter detector for the pumping unit comprises an A phase voltage transformer, a B phase voltage transformer, a C phase voltage transformer, an A phase current transformer, a B phase current transformer and a C phase current transformer. The output end of each voltage transformer and the output end of each current transformer are respectively connected with the input end of a signal conditioning module. The output end of the signal conditioning module is connected with the input end of an electric parameters test analysis module. The output end of the electric parameters test analysis module is connected with the input end of a single chip which is connected with a liquid crystal display module. The portable electric parameter detector for the pumping unit with the signal conditioning module, the electric parameter test analysis module and the single chip has a large enough measuring frequency, thereby being capable of automatically and adequately measuring the real-time parameters and the continuous curves in terms of current, voltage, active power, reactive power, power factors and the like of the pumping unit in an operation cycle and automatically calculating the data, such as degree of balance, cycle average value and the like.

Description

Portable oil pumper electrical parameters detection instrument

Technical field

The utility model relates to a kind of oil field surveying instrument, is specifically related to a kind of portable oil pumper electrical parameters detection instrument.

Background technology

Adopted walking-beam pumping unit in the exploitation of oil in a large number, this oil pumper if adjust not in placely, can work in non-equilibrium state because the up-down stroke load change is bigger.Oil pumper can reduce the power factor of motor in this state, increases the loss of the energy, and the power attenuation of expanded motor reduces life-span of motor.The method of judging at present the balance of well pumping unit state is to measure the current maxima of oil pumper up-down stroke with clamp on amperemeter, according to the equilibrium state of the ratio in judgement oil pumper of two electric currents.In fact current balance type can not guarantee the certain balance of oil pumper, motor its input current when zero load reaches about 30% of rated current, when load increases, input current changes and is little, just power factor is increasing, when the relative motor nominal load of oil pumper operating load hour, can't judge according to electric current.Electric current divides not outgoing direction in addition, and is seriously uneven when oil pumper, when motor is in generating state, can't judge from electric current.Want correctly to judge the equilibrium state of oil pumper, can judge, check the active power change curve of oil pumper in the whole service cycle according to the input active power of motor.

The instrument of measuring power input to machine at present has the power quality analysis instrument, this instrument can be measured electric current, voltage, electric power curves, analyze harmonic components, but this instrument is not owing to be to design at oil-field oil pumper specially, there is not special-purpose electric parameters testing analysis module, survey frequency is lower, be merely able to be fit to the less occasion of load variations, oil pumper state in the running is constantly to change, and change very fast, this instrument can't be followed the tracks of this quick variation, and its measurement result can't truly reflect the running status of oil pumper.

Summary of the invention

The purpose of this utility model is: the present situation that can't accurately measure pumping-unit motor input active power at present power measuring instrument, provide a kind of survey frequency enough big, can automatic accurate measurement oil pumper real-time parameter and continuous curves such as electric current, voltage, active power, reactive power, power factor in cycle of operation, and the electric parameter measurement instrument of data such as calculated equilibrium degree, cycle mean value automatically.

The purpose of this utility model is achieved in that portable oil pumper electrical parameters detection instrument, comprise A phase voltage mutual inductor, B phase voltage mutual inductor, C phase voltage mutual inductor and A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor, the output terminal of above-mentioned each voltage sensor and each current sensor is connected the input end of signal condition module respectively, the output terminal of signal condition module connects the input end of electric parameters testing analysis module, the output terminal of electric parameters testing analysis module connects the input end of single-chip microcomputer, and described single-chip microcomputer connects LCD MODULE.

Measure the electrical quantity of pumping-unit motor under the situation that the utility model can not shut down, not have a power failure at oil pumper; only need the test clip of each voltage transformer (VT) is received on the corresponding motor lead-in clamp; the testing clamp of each current transformer is connected on and can begins on the corresponding input electric wire to measure; the utility model can adapt to three-phase four-wire system, three-phase three-wire system, single-phase power supply mode, can adapt to star-like, leg-of-mutton mode of connection.After input or selecting the oil well title, only need to click to begin to measure button, instrument begins to measure, analyzes motor electrical quantity data, in two cycles of operation of oil pumper, draw the oil pumper cycle of operation, automatically stop to measure, the curve map that shows the electric current of oil pumper in cycle of operation, voltage, active power, reactive power, applied power, power factor on liquid crystal display calculates current balance type degree, active power balance degree, the data such as power consumption in odd-numbered day of oil pumper simultaneously.

Because the utility model is provided with signal condition module, electric parameters testing analysis module and single-chip microcomputer, survey frequency is enough big, can automatic accurate measurement oil pumper real-time parameter and continuous curves such as electric current, voltage, active power, reactive power, power factor in cycle of operation, and data such as calculated equilibrium degree, cycle mean value automatically.

As further improvement of the utility model, described single-chip microcomputer connected storage.Storer can be stored the electrical quantity curve data of more than 1000 mouthful of well, and the measurement data of storage can be transferred in the computing machine, can browse figure in computing machine more meticulously, analyzes data.

As further improvement of the utility model, described single-chip microcomputer connects wireless module.Can utilize PDA and wireless module traffic operation measuring process, when adopting this mode of operation, operating personnel can be free movable in the scope of oil well well site, convenient running status of observing oil pumper, the display screen of PDA and LCD MODULE data sync of the present utility model change during measurement, measure end back two screens and all show the electrical quantity curvilinear figure.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model.

Wherein, 1-A phase current mutual inductor, 2-B phase current mutual inductor, 3-C phase current mutual inductor, 4-A phase voltage mutual inductor, 5-B phase voltage mutual inductor, 6-C phase voltage mutual inductor, 7-signal condition module, 8-electric parameters testing analysis module, 9-single-chip microcomputer, 10-wireless module, 11-LCD MODULE, 12-storer, 13-RTC clock, 14-power module, 15-voltage transformation, 16-power management.

Embodiment

As shown in Figure 1, portable oil pumper electrical parameters detection instrument, comprise A phase voltage mutual inductor 4, B phase voltage mutual inductor 5, C phase voltage mutual inductor 6 and A phase current mutual inductor 1, B phase current mutual inductor 2, C phase current mutual inductor 3, the output terminal of above-mentioned each voltage sensor and each current sensor is connected the input end of signal condition module 7 respectively, the output terminal of signal condition module 7 connects the input end of electric parameters testing analysis module 8, the output terminal of electric parameters testing analysis module 8 connects the input end of single-chip microcomputer 9, and single-chip microcomputer 9 connects LCD MODULE 11.Single-chip microcomputer 9 also is connected with storer 12 and wireless module 10.For power supply and the operate as normal of guaranteeing machine, power module 14, voltage transformation 15, power management 16, RTC clock 13 are installed also.

Claims

1. portable oil pumper electrical parameters detection instrument, it is characterized in that: comprise A phase voltage mutual inductor, B phase voltage mutual inductor, C phase voltage mutual inductor and A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor, the output terminal of above-mentioned each voltage sensor and each current sensor is connected the input end of signal condition module respectively, the output terminal of signal condition module connects the input end of electric parameters testing analysis module, the output terminal of electric parameters testing analysis module connects the input end of single-chip microcomputer, and described single-chip microcomputer connects LCD MODULE.

2. portable oil pumper electrical parameters detection instrument according to claim 1 is characterized in that: described single-chip microcomputer connected storage.

3. portable oil pumper electrical parameters detection instrument according to claim 1 and 2 is characterized in that: described single-chip microcomputer connects wireless module.