Oil pumping unit control and heating integrated system

An integrated system and pumping unit technology, applied in general control systems, control/regulation systems, program control, etc., can solve the problems of poor power supply quality, large voltage fluctuations, and shortened equipment life for well groups.

Inactive Publication Date: 2015-07-01
TIANJIN CHERUB ELECTRIC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] The previous pumping unit control and the centralized control of electric heating rod heating had the following problems: 1) The quality of the power supply for the well group was poor and the voltage fluctuated greatly; 2) The power factor of the pumping unit was low; , When the power comes on again, several motors start at the same time, which has a large impact on the power grid; 4) The motor starts at full voltage, which generates a large starting current and star

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  • Oil pumping unit control and heating integrated system

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Embodiment Construction

[0011] The invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the devices used in the specific embodiments are all commercially available, and the connection and use methods are suggested by the manufacturer's instructions.

[0012] like figure 1 As shown, the present invention includes a power supply, a common DC bus, an inverter 8, an intermediate frequency power supply 10, a feedback unit 14, a PLC (programmable logic controller) 15, a human machine interface (Human Machine Interaction, referred to as HMI) 16, and a sensor 17 , pumping unit 18 and heating device 19, the power supply is connected with the public DC bus, the public DC bus is connected with the 5 inverters 8, the 2 intermediate frequency power supplies 10, and the 5 inverters 8 is connected to the five pumping units 18, the two intermediate frequency power supplies 10 are connected to the five heating devices 19, the common...

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Abstract

The invention provides an oil pumping unit control and heating integrated system, which comprises a power supply, a public DC (Direct Current) bus, inverters, medium-frequency power supplies, a feedback unit, a PLC (Programmable Logic Controller), a man-machine interface, a sensor, oil pumping units and heating devices, wherein the power supply is connected to the public DC bus, the public DC bus is connected with the multiple inverters and the multiple medium-frequency power supplies, the inverters are connected to the multiple oil pumping units, the medium-frequency power supplies are connected to the multiple heating devices, the public DC bus is also connected to the feedback unit, the inverters and the medium-frequency power supplies are connected to the PLC respectively, and the PLC is connected to the sensors and the man-machine interface. The oil pumping unit control and heating integrated system has the beneficial effects of being capable of realizing intelligent centralized control and staggered-peak operation of the oil pumping unit, realizing energy feedback by utilizing the public DC bus and the feedback unit, improving work efficiency, adjusting length and times of stroke randomly, achieving a standby medium-frequency power supply while one medium-frequency power supply is in use as two medium-frequency power supplies are used, and heating N wells circularly according to preset heating parameters.

Description

technical field [0001] The invention relates to an integrated system for controlling and heating an oil pumping unit. Background technique [0002] The previous pumping unit control and the centralized control of electric heating rod heating had the following problems: 1) The quality of the power supply for the well group was poor and the voltage fluctuated greatly; 2) The power factor of the pumping unit was low; , When the power comes on again, several motors start at the same time, which has a large impact on the power grid; 4) The motor starts at full voltage, which generates a large starting current and starting torque, which has a large impact on mechanical equipment, reduces the life of the equipment, and increases the transformer and power grid. Power supply load; 5) Separate control of the pumping unit is not conducive to centralized operation; 6) The electric energy generated during the downstroke of the pumping unit cannot be used; 7) The operating status of the p...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02G05B19/05G05B2219/25314
Inventor 申随章
Owner TIANJIN CHERUB ELECTRIC
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