Rotor flowmeter according to the different cone material, can be divided into glass tube float flowmeter and metal tube float flowmeter two categories. Rotameter, also known as float flowmeter, measures the flow rate by measuring the position of a rotating part located in a DC pipeline. It is a kind of variable area flow meter based on float position measurement. It adopts all-metal structure, its pressure loss is small, the span ratio is large (10:1), and it is easy to install and maintain. It can be widely used in complex and harsh environments and various media conditions. Flow measurement and process control. Rotor Flowmeter Operation The Rotameter consists of two components. One of the Rotameters is a conical tube that gradually expands from the bottom up; the other of the Rotameters is placed in a conical tube and can be centered along the tube. The rotor moves freely above and below. Rotameter When measuring the flow of a fluid, the fluid to be measured flows from the lower end of the conical tube. The flow of fluid impinges on the rotor and generates a force on it (this force varies with the flow rate); when the flow is large enough The resulting force lifts the rotor and raises it. At the same time, the fluid to be measured flows through the annular section between the rotor and the conical tube wall and flows out from the upper end. When the measured fluid flows, the force acting on the rotor is exactly equal to the weight of the rotor in the fluid (referred to as the display weight), and the rotor is in equilibrium and stays at a certain height. A rotameter is a type of variable area flowmeter. In a vertical conical tube that expands from below to above, the gravity of a float with a circular cross section is absorbed by the liquid and the float can rise and fall freely within the cone. . It moves up and down under the action of flow velocity and buoyancy, and after balancing with the weight of the float, it is transmitted through the magnetic coupling to the dial to indicate the flow. Rotameters are generally divided into glass and metal rotor flowmeters. The metal rotor flowmeter is the most commonly used in the industry. For small diameter corrosive media, glass is usually used. Due to the inherent fragility of the glass material, the key control point also uses a rotameter made of precious metals such as full titanium. . Analysis shows that the height of the rotor in the conical tube has a corresponding relationship with the flow rate. Therefore, by observing the position of the rotor in the conical tube, the corresponding flow rate can be obtained. In order to make the rotor do not touch the pipe wall when moving down the center line of the conical pipe, two methods are usually adopted. One is to install a guide mandrel in the center of the rotor to keep the rotor in the center line of the conical pipe. Up and down movement, the other is to open a track chute at the edge of the rotor disk. When the fluid flows through the rotor from bottom to top, one side bypasses the rotor and passes through the chute to generate a reverse thrust, so that the rotor does not go around the centerline. Stopping the ground will keep the rotor from hitting the wall when it is working. Rotor flowmeter rotor material can be made of stainless steel, aluminum, bronze and so on. Characteristics of Rotameters Rotameters are the most commonly used flowmeters in industry and laboratories. It has a simple structure, intuitive, small pressure loss, easy maintenance and so on. The rotameter is suitable for measuring small flow through the pipe diameter d<150mm, and it can also measure the flow of corrosive media. When used, the flow meter must be installed on a pipe section that runs vertically and the fluid medium flows through the rotameter from bottom to top. Glass tube floater flowmeter is simple in structure and low in cost. It is easy to make anti-corrosion type instruments. It is mostly used for on-site measurement of transparent fluids. The metal tube floater flowmeter can output standard signals and can realize flow calculation, recording and control, etc. Features.
Truss Manipulator, also known as gantry robots, belong to rectangular coordinate robots. It can realize automatic control, space-based XYZ rectangular coordinate system, repeatable programming, multi-degree-of-freedom, right-angular movement between each other, multi-functional, multi-purpose robots. It can carry objects and operating tools to complete various operations.
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