Water Injection Pump
Water injection pump is the indispensable pump for high and stable out-put during middle and final stages of petroleum production. We can produce water injection pump independently, such as CYZSB standard pressure injection pumps and ZYZSB supercharging pumps have won national patent which number is ZL94247239.X.
Working Conditions:
•Transport medium for water, oil, or oil and water mixture.
•Solid content (proportion by weight) no more than 0.05%
•The medium temperature is not higher than 80℃, and the environmental temperature is ±40℃.
•The supply voltage should be 380V + 5% at 50Hz, special arrangement should be made if the customers have special requirements on frequency converter or click itself.
•Inlet pressure and outlet pressure: The inlet pressure of standard injection pump is 0-2MPa (sufficient liquid supply should be guaranteed), the inlet pressure of supercharging should be 2-25MPa.
Water injection pump is mainly consisted of five parts:
1. Control Cabinet 2. diving motor 3. gaskets and shaft device 4. pump 5, base
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Piezoelectric effect means that stretching or pressing a material causes it to generate a voltage or, conversely, applying a voltage causes the material to be stretched or shrunk. To date, scientists still do not observe the piezoelectric effect in materials of several atomic thicknesses. Wang Zhonglin, a professor of materials science and engineering at Georgia Tech, said: "The latest research not only provides new properties for 2D materials such as molybdenum disulfide, but also helps scientists develop new types of materials that use mechanical control Electronic equipment."
James Horne, another professor and professor of mechanical engineering at Columbia University, said: "This material is as thick as a single atomic layer and is expected to be made into wearable devices that may be integrated into fabric to move the human body The energy is converted to electricity to power wearable sensors , medical devices or cell phones. "
Wang Zhonglin said there are two key points to using MoS2 for power generation: use odd layers and let them bend in the right direction because even layers cancel each other out.
In a recent study, the Horn team placed thin, molybdenum disulfide flakes on a flexible plastic base and used optical techniques to determine the orientation of their lattices, after which they placed metal electrodes on the flakes. Wang Zhonglin team will measure the electrode installed in the sample provided by the Horn team, and then according to the sample deformation of the current measurement. They monitor the transition between mechanical and electrical energy and observe the voltage and current output.
The researchers said that when they change the direction of the applied tensile force, the output voltage will be reversed, and if the number of layers is even, then the voltage in the sample will disappear, which is the first time scientists in the odd layers of molybdenum disulfide In the piezoelectric effect was observed.
Wang Zhonglin said: "Materials like molybdenum disulphide do not exhibit piezoelectric effects when they are massive, but piezoelectric effects appear when their thickness is only one atom, which is fascinating."
In fact, molybdenum disulphide is one of the two-dimensional semiconducting materials of transition metal chalcogenides, which are all considered to have the same piezoelectric effect. The latest research may have unique properties and places of use for these materials Open the door.
Wang Zhonglin stressed that the latest research reveals for the first time the piezoelectric effect of two-dimensional materials and greatly expands the potential of multi-layer materials in the field of human-computer interaction, robotics , micro-electromechanical systems and active flexible electronic devices. In the end, we might be able to develop nano-systems of atomic thickness that can harness mechanical energy from the surrounding environment. (Liu Xia)
In a recent online edition of Nature, U.S. scientists reported online that they first observed the piezoelectric effect in a single atomic thickness of MoS2, confirming previous theoretical predictions and developing the world's thinnest Generator and mechanics-aware device that is not only very light-weight and flexible but stretchable.