liquid ring vacuum pump is introducedThe excitation mode
People who know about the liquid ring vacuum pump know that, because the vacuum pump equipment has the advantage of simple structure, easy to operate has been widely used, if you want to use the liquid ring vacuum pump equipment more smoothly, you need to know its structure, then we will introduce the liquid ring vacuum pump excitation control knowledge.
1. The excitation circuit of the liquid ring vacuum pump is powered on to check and adjust the pre-set parameters, including the limit value of magnetic flux (excitation current), the setting value of loss of magnetic protection, the setting value of full magnetic current and the weak magnetic control curve;
2, liquid ring vacuum pump potential (or voltage) regulation of the closed-loop open-loop simulation test. The simulation method gives the armature terminal voltage and armature loop current, and adjusts the output limiting value, excitation current and feedback loop parameters of the potential (voltage) regulator.
3, liquid ring vacuum pump (or flux) adjusting excitation current closed-loop control step response dynamic characteristics of adjustment. To measure and adjust k dynamic characteristic index in full magnetic working area, near weak magnetic starting point and weak magnetic working area respectively, it should meet the design requirements.
Inside the liquid ring vacuum pump is equipped with the belt, the eccentricity of the rotor blade is water (liquid) into the stator wall, water (liquid) to form with the stator concentric rings of liquid liquid ring and rotor blade together form the set of variable displacement of a revolving variable volume pump.
Through the above introduction we also know that the liquid ring vacuum pump is currently used very widely, has a good development prospect, in the use is also to bring everyone a great help. Liquid ring vacuum pump manufacturers remind everyone, in the use of equipment is must carefully observe the operation of the equipment, once found any problems with the water ring pump equipment should be solved in a timely manner, to ensure the normal operation of the liquid ring vacuum pump equipment, and will reduce the loss.
2BE vacuum pump ambient temperature in service
In addition to the first b-a type ultra-high vacuum gauge, the full-pressure side gauge of the ultra-high vacuum system has also developed many extremely high vacuum gauges, such as cold cathode magnetron gauge, suppression gauge and bend gauge. But for many studies, total stress data alone are not enough. For example, the adsorption, condensation and desorption processes in the vacuum system of 2BE vacuum pump involve the interaction between the surface of the container and the substances inside the system and the residual gas molecules:
The data of gas composition and partial pressure in the system are more illustrative than the data of full pressure. Gas analysis and partial pressure measurements under vacuum conditions are usually performed by dynamic mass spectrometers. In the medium to be transported, if there are solid particles, the pump inlet to add a filter: if there are ferromagnetic particles, need to add a magnetic filter. 2BE vacuum pump in use the ambient temperature should be less than 40℃, motor temperature rise should not exceed 75℃. After 1000 hours of normal operation, the magnetic pump should be removed to check the wear of the bearing and end ring, and replace the vulnerable parts that are not suitable for reuse. For the transport fluid is the medium that is easy to precipitate and crystallized, it should be cleaned in time after use to drain the accumulated fluid in the pump.
2 be vacuum pump must always keep clean, vacuum pump shall not be placed on other items, shall not be blocked vacuum pump around the channel, and to facilitate maintenance and operations, often pay attention to the elastic v-belt, adjust, often pay attention to whether the pipe joint leakage, and the casing vacuum has declined, otherwise to timely maintenance, often pay attention to whether the cooling water flow, to drive every time a discontinuous start 4 to 6 times, each time less than 2 s, to overcome the large torque when it is started.
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