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technical article
Plastic tube float flow meter combined appliance reduces land occupation and costs
2012-3-28 11:23:18

The emergence of electronic transformers has been hailed as a revolution in the manufacturing of high-voltage electrical appliances in the early 2000s. Its digital output and networked wiring make the power grid safer, more environmentally friendly, and more conducive to the intelligence of the primary equipment and even the entire transmission and distribution system. Compared with traditional transformers, electronic transformers have the following characteristics: Small signal transmission replaces high power output. Miniaturization and low power of transformers can reduce the weight of tens of kilograms or even tons to a few kilograms. 代替油、气绝缘。 Optically isolated plastic tube float flowmeter replaces oil and gas insulation. Independent high-voltage transformers use optical fiber digital connections once and twice. Optical isolation replaces complex and expensive oil and gas insulation systems. This is a revolutionary change. The higher the voltage, the higher the cost-effectiveness of the transformer. Digital output replaces analog output, which is convenient for subsequent network connection and intelligent processing. It adopts optical fiber transmission and has stronger ability to resist electromagnetic interference. Network data sharing replaces multi-winding parallel wiring. Single-point measurement data of electronic transformers can be transmitted via Industrial Ethernet, so they are shared, and a large number of parallel cables can be omitted at the power station.


Capital structure combination: Utilizing the advantages of electronic micropower and miniaturization, the transformers are more assembled in components as transformers, fully enclosed plastic tube float flowmeter combination appliances, isolation knives and other combination appliances to reduce land occupation, reduce construction costs, and Function miniaturization and intelligence can be promoted through functional reuse. Various schemes will be combined with each other while taking advantage of each other. In addition to various independent and closed current-voltage combination transformers, LPCT / ROG-CT and optics are expected to appear in the next few years. Combination version of current transformer. 和测量精度指标,因而可以替代传统依靠油、气绝缘的互感器。 Soon, a kind of "equal-potential cavity" partial pressure structure suitable for electronic low-power partial pressure appeared in China. It has high insulation safety plastic tube float flow meter and measurement accuracy index, so it can replace the traditional oil and gas reliance. Insulated transformer. This technology is particularly suitable for the dry type of high-voltage and ultra-high-voltage voltage divider structures. It is a new type of electronic voltage transformer that has grown out of China. In order to overcome the measurement performance susceptible to temperature and vibration stress, the optical solution has been improved from a ring magneto-optical glass to a fiber-optic sensor, making the optical solution a new technical platform, closer to the practical requirements. A few types of electronic transformers known as fiber optics have been tried out, and they need to further overcome the problems of complex structure and high cost.

的主要测量元件为一根小端向下,大端向上垂直安装的锥形塑料管及其在内可以上下移动的浮子。 The main measuring element of the plastic tube rotor flowmeter is a conical plastic tube with a small end facing downward and a large end facing upward, and a float that can move up and down inside. When the fluid flows through the conical plastic tube from bottom to top, a pressure difference is generated between the upper and lower parts of the float, and the float rises under the action of this differential pressure. When the force that causes the float to rise is equal to the combined forces of gravity, buoyancy, and viscous force, the float is in an equilibrium position. Therefore, there is a certain proportional relationship between the flow rate of the fluid flowing through the flowmeter and the rising height of the float, that is, the flow area of the flowmeter. The position height of the float can be used as a flow measurement.