PLC (Programmable Logic Controller) intelligent automatic sand mixing system and control method thereof

A sand mixing and automatic technology, applied in electrical program control, program control in sequence/logic controller, earth drilling and mining, etc., can solve problems such as unseen, reduce manpower and material resources, reduce production costs, and improve construction speed and the effect of the technical level

Active Publication Date: 2010-12-15
DAQING JINGTAI PETROLEUM ENG TECH
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Problems solved by technology

At present, PLC has been widely used in various industries such as iron and steel, petroleum, chemical industry, electric power, building materials, machinery manufacturing, automobil

Method used

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  • PLC (Programmable Logic Controller) intelligent automatic sand mixing system and control method thereof
  • PLC (Programmable Logic Controller) intelligent automatic sand mixing system and control method thereof
  • PLC (Programmable Logic Controller) intelligent automatic sand mixing system and control method thereof

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[0013] 5. Specific implementation mode: The present invention will be further described below in conjunction with the drawings:

[0014] figure 1 It is the working block diagram of the PLC automatic control system in the present invention, figure 2 It is a schematic diagram of the structure of the automatic control system in the present invention, combined with figure 1 , figure 2 As shown, the PLC intelligent automatic sand mixing system is a central processing unit composed of a central processing unit 13, an A / D converter 14, a D / A converter 15, a liquid crystal display 16, and an imported electromagnetic flowmeter 7, which is connected to it. Outlet electromagnetic flowmeter 8, ultrasonic liquid level detector 9, isotope sand ratio meter 10, pressure transmitter 11, mixer 5, quartz sand inlet 3, water inlet 1, inlet pump 2, and outlet pump 4; among them, The ultrasonic liquid level detector 9 connected to the sand mixing tank 12 is connected to the input end of the PLC; the ...

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PUM

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Abstract

The invention discloses a PLC intelligent automatic sand mixing system and a control method thereof. The sand mixing system comprises a central processing unit as well as an inlet electromagnetic flow meter, an outlet electromagnetic flow meter, an ultrasonic liquid level detector, an isotope gravelfluid ratiometer, a pressure transducer, a stirrer, a quartz sand material inlet, a water inlet, an inlet pump and an outlet pump which are connected with the central processing unit, wherein the central processing unit comprises a CPU, an A/D (Analog-to-Digital) converter, an D/A converter and a liquid crystal display screen. In the control method, the central processing unit is used for sending out a command to control the work of the water inlet, the quartz sand material inlet, the inlet pump, the stirrer and the outlet pump; the inlet electromagnetic flow meter, the outlet electromagnetic flow meter, the ultrasonic liquid level detector, the isotope gravelfluid ratiometer and the pressure transducer are used for transmitting collected data into a PLC; and the data obtained after calculation by the PLC are displayed on the liquid crystal display screen. By connecting the PLC with various instruments of the sand mixing system, the invention realizes automatic sand addition, automatic liquid supplement and real-time monitoring of technical parameters, and reduces manpower and materials required for preparing liquid on site and the production cost.

Description

1. Technical field [0001] The invention relates to a PLC automatic control system and a control method thereof, in particular to a PLC intelligent automatic sand mixing system and a control method thereof. 2. Background technology [0002] The hydraulic slotting technology is to use water as the medium, carry a certain proportion of quartz sand (that is, the sand-carrying liquid) through the high-pressure pump truck, and send the sand-carrying liquid to the high-pressure wear-resistant nozzle connected to the bottom hole string, and the casing, cement, etc. It is a very powerful construction technology for increasing production and injection in oilfields by penetrating through the sandstone of the ring and oil layers, thereby increasing the seepage area. Since the hydraulic slotting process was gradually promoted in the oil field, the sand mixing system on site has continued to be a relatively old construction process. The sand ratio of the sand-carrying liquid and the disch...

Claims

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Application Information

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IPC IPC(8): E21B43/26G05B19/05
Inventor 张亚胜
Owner DAQING JINGTAI PETROLEUM ENG TECH
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