To pump energy back into the grid, some of the rotational energy is bled off to power a generator on the main shaft.
把电能又送回电网时，就释放一部分转动的动能，开动位于主轴的发电机。
2
Pumpshaft seals use mechanical seal, pump top and bottom, respectively, equipped with water injection plug and the drain plug.
泵的轴封采用机械密封，泵体顶部和底部分别装有注水、放泄的螺塞。
3
Internal gear pump structure and other gear pump structure similar to, mainly by the outer rotor and rotor, pumpshaft, pump body, the front cover, bracket, sealing device, bearing, etc.