A precision control device and control method for automatic emulsion preparation
A technology of precision control and automatic preparation, applied in chemical instruments and methods, mixing methods, transportation and packaging, etc., can solve the problem that the precision of emulsion preparation cannot be effectively guaranteed, the mass ratio of water and emulsified oil cannot be accurately measured, and it is difficult to achieve real-time Controlling issues such as emulsion concentration
Inactive Publication Date: 2020-05-15
CHINA UNIV OF MINING & TECH
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Problems solved by technology
In addition, the emulsion is easy to lose a large amount during the operation of mine support equipment, and must be replenished in time, otherwise it will seriously affect the safe use of support equipment
[0003] Most of the existing emulsion preparation devices cannot accurately measure the mass ratio of water to emulsified oil, and the accuracy of emulsion preparation is difficult to be effectively guaranteed
In addition, the existing emulsion configuration device adopts the method of detecting the concentration of the emulsion first and then compensating the corresponding liquid, which makes it difficult to realize real-time control of the concentration of the added emulsion
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[0046] Generally, the concentration of the emulsion is required to be in the range of 3% to 5%. In this example, the mixing ratio K of emulsified oil and water is set to 4%. According to the actual situation of the field equipment, the upper limit H of the liquid level of the emulsion tank 12 is set. is 1.2 meters, the lower limit H of the liquid level is 0.3 meters, the delay error compensation time T is 15 seconds, and the error compensation coefficient A is 2.
[0047] According to the diameter of the water pipe on site, the pressure of the water source is adjusted to 0.3MPa through the pressure regulating valve 7, and the water flow Q water is basically kept at about 500Kg / h.
[0048] When working, the liquid level value H in the emulsion tank 12 is detected in real time by the liquid level detector 11. When H≤0.3m, the frequency conversion motor 4, the oil circuit solenoid valve 5 and the water filling solenoid valve 8 are turned on to start preparing the emulsion.
[004...
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The invention discloses an emulsion automatic preparation accuracy control device and a control method. The device is: a frequency conversion motor drives an oil pump, and the oil outlet of the oil pump and the liquid outlet of the water supply pipeline are respectively connected with two liquid inlets of the mixer; The liquid outlet of the device is connected to the emulsion tank; the oil solenoid valve and the emulsion flowmeter are connected in series on the oil supply pipeline; the water adding solenoid valve and the water adding flowmeter are connected in series on the water supply pipeline; There is a liquid level detector; the controller is respectively connected with the emulsified oil flow meter, the oil circuit solenoid valve, the water filling flow meter, the liquid level detector and the water filling solenoid valve; the frequency conversion motor is connected with the controller through the PID adjustment module. Methods: set the basic parameters; collect real-time data; start the emulsion preparation; fast track the set value; stop the emulsion preparation. The device and method can accurately measure the mass ratio of water and emulsified oil, can improve the preparation accuracy of the emulsion, and can control the concentration of the supplemented emulsion in real time.
Description
technical field [0001] The invention belongs to the technical field of emulsion preparation, and in particular relates to an emulsion automatic preparation accuracy control device and a control method. Background technique [0002] As the transmission medium of the hydraulic system, the emulsion is widely used in mine support equipment and other fields. It not only plays the role of power transmission, but also plays the role of lubrication, cooling, anti-corrosion and anti-rust. Emulsion is a completely mixed liquid prepared by water and emulsified oil in a certain proportion. Whether its concentration is appropriate will directly affect the life cycle and production and operation costs of hydraulic props, hydraulic supports and other hydraulic components. In addition, the emulsion is easy to lose a large amount during the operation of mine support equipment, and must be replenished in time, otherwise it will seriously affect the safe use of support equipment. [0003] Mos...
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IPC IPC(8): B01F3/08B01F15/00
CPCB01F23/41B01F35/2202Y02P70/10
Inventor 卢爱红茅献彪徐金海
Owner CHINA UNIV OF MINING & TECH