With the continuous development of modern science and technology, the pump has also made great changes in the design methods and progress, with vertical multistage centrifugal pump as an example. It has replaced the original appearance of the horizontal, small footprint, out of water at the same level, a wide range of applications, can be used in power plant boiler feed pump, or marine pumps on the pump or industrial pump, submerged pump Wait. Vertical multistage centrifugal pumps are now moving toward high capacity, high speed, high efficiency, high reliability, low noise and automation. 1, Capacity increase of large capacity vertical multistage centrifugal pump can reduce equipment cost, reduce construction cost, save resources, facilitate management and automation, at the same time, it can also improve the technical and economic indexes and operation reliability of the unit. 2, high-speed General vertical multistage centrifugal pump speed 3000R / MIN, with the development of science and technology, the pump speed is higher and higher, for the pump, increase the speed can improve single-stage lift, so when the total lift is not Variable time can reduce the pump series, shorten the length of the pump shaft, reduce size, reduce weight, saving raw materials and manufacturing costs. 3, high efficiency Vertical multistage centrifugal pump is a universal product, the power consumption is objective, for which we must improve pump efficiency and save energy. 4, high reliability When the vertical multistage centrifugal pump to the high capacity, high speed direction, the reliability of the problem will be particularly prominent, only the pursuit of high efficiency and neglect of reliability, then the loss is often greater than the energy saving in operation. 5, low noise thermal power plant is a strong noise source, noise pollution and air pollution, environmental pollution, endangering human health 6, automation With the continuous development and application of computer and network technology, many systems have achieved DCS automation control, In the DCS pump is no longer alone control but network monitoring and control. Pump product development has been from the original computer-aided CAD software development to the present CFD CFD analysis and application, and then to the pump virtual product design VPD and virtual product development VPD direction.
Other Parts
The structure of the core barrel is generally divided into single - acting double core tube and most of the fishing apparatus. The double tube section consists of an outer tube assembly and an inner tube assembly. The outer pipe assembly includes; The main structure and working principle of the cartridge stopper, cartridge chamber, stable joint outer pipe, diamond reamer and diamond bit are as follows:
(1) Spear structure is composed of spear head and recovery spring. When coring, the fishing device is lowered to the upper part of the inner tube assembly in the drill pipe, and the fishing hook grasps the fishing spear, lifts the fishing device up, picks up the recycling card barrel, and inwardly compressing the cartridge card, so that the inner tube assembly and the outer tube are separated, so that the inner tube assembly is lifted up.
(2) The clip structure is mainly composed of the clip frame, clip, spring and other components. Its function is that when the inner tube sits on the outer tube, the clip expands with the help of the elastic force of the expansion spring and sticks to the inner wall of the clip chamber, so that the drilling tool can achieve positioning.
(3) Buffer structure by spring, locking mother, split pin composition. Protecting the inner tube when pulling the core.
(4) Single action structure is realized by two pairs of thrust bearings.
(5) Adjust the length of the inner pipe assembly and the outer pipe assembly of the structure, and fine-tune the lower shaft and the locking mother to achieve the gap required by the end of the spring seat and the step inside the drill bit.
(6) The fishing structure, also known as the fishing device, is mainly composed of fishing hook, hammer and safety rope. The fishing hook is used to hold the spearhead while fishing the inner pipe, and the weight is used to speed up the fishing device's descent to save fishing time. The safety rope is a thin rope. When the inner pipe is stuck for some reason and cannot be lifted, the safety rope can be forcefully lifted and then the drill can be lifted.
Other Parts,Spearhead Base,Compression Spin,Core Lifter
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