Author: centrifugal air compressor source: http://www.shbolaite.cn release time: 2016-06-02
1, what are the characteristics of the centrifugal compressor?
Bolaite centrifugal compressor is a turbine compressor, with large treatment capacity, small volume, simple structure, stable operation, convenient maintenance and gas without oil pollution, can drive more used etc..
2. The working principle of the centrifugal compressor
Generally speaking, increasing the number of the main goal is to increase the gas pressure in a unit volume of gas molecules, which is shortened between gas molecules and the distance, in order to achieve this goal, using the method of gas dynamics, namely the use of power machinery components (high speed rotary impeller), the power of gas, gas in pratta centrifugal pressure increased, while the kinetic energy is increasing, then in the diffuser flow in this part of the kinetic energy into pressure energy, and the gas pressure to further improve the working principle of the centrifugal compressor is pratta.
3, what are the main motives of the compressor?
The main motive of the compressor is: motor, steam turbine, steam turbine, etc..
Centrifugal air compressor
What are the 4, pratta centrifugal compressor auxiliary equipment?
Bolaite centrifugal compressor host is run in the normal operation of auxiliary equipment as the premise, auxiliary equipment includes the following several aspects:
1, lubricating oil system.
2, cooling system.
3, condensate system.
4, electrical instrument system that control system.
5, dry gas seal system.
5, Bo centrifugal compressor according to the structural characteristics of which types?
According to the structural characteristics, the compressor can be divided into three types: horizontal section, vertical section, isothermal compression, and combination.
6, which parts of the rotor?
The rotor comprises a main shaft, impeller, shaft, shaft nut, sleeve, balance disc and thrust plate.
7, the definition of the class?
The utility model is a basic unit of the compressor of the Wright type centrifugal compressor, which is composed of an impeller and a group of fixing elements which are matched with the impeller.
8, the definition of paragraph?
Each air inlet to the exhaust port is formed into a segment, which is composed of one or more stages.
9, the definition of the cylinder?
The cylinder of the compressor is composed of one or several sections, and a cylinder can hold at least one order of magnitude up to ten.
10, the definition of the column?
High pressure centrifugal compressor Bolet sometimes need to be composed of two or more than two cylinder consists of a cylinder or cylinder are arranged into several pratta centrifugal compressor in a straight line, different columns, the speed is not the same, high speed is higher than the low pressure column column, the same speed (coaxial) column, the impeller diameter is greater than the low pressure column column.
11, what is the role of the impeller? What are the types of structural features?
The impeller is the only element pratta centrifugal compressor power of the gas medium, the centrifugal thrust gas medium in the high-speed rotation of the impeller under the impeller rotates together with the operation, so as to obtain the kinetic energy, and the diffuser into pressure, under the action of centrifugal force, thrown by the impeller. Along the diffuser, bend, return to the next level further until the compressor impeller pressure, outlet.
According to the structural characteristics of the impeller can be divided into: open, semi open, closed 3 types.
12. What is the maximum flow rate of the compressor?
When the flow reaches the maximum of the working condition is the maximum flow conditions, resulting in this situation there are two possibilities:
One is a channel in the throat flow level reaches the critical state, then the volume flow rate of gas is maximum, and the compressor pressure reduce, the flow is not likely to increase, this condition has become a "blocking" condition.
The two is in the channel and did not reach the critical state, which did not appear "blocking" condition, but the compressor in a large flow, internal flow loss, exhaust pressure can provide is very small, almost close to zero energy, can only be used to overcome the resistance of the exhaust pipe to maintain such a large flow rate. This is the maximum flow rate of centrifugal compressor bolet.
13, what is the surge of centrifugal compressor Bolet?
Bolaite centrifugal compressor in production process, sometimes will suddenly have a strong vibration, gas flow and pressure is greatly fluctuating, and accompanied by periodic boring "call" sound, and turbulence in the pipe network caused by "Hu" and "and" strong noise, the phenomenon that the surge condition for pratta centrifugal compressor. The compressor does not run for a long time at the surge condition, once into the compressor surge condition, the operator should take immediate measures to reduce the export pressure, adjust, or increase the import or export of the compressor, flow, from the rapid surge area to achieve stable operation of compressor.
What are the characteristics of the 14, the surge phenomenon?
Run pratta centrifugal compressor surge phenomenon occurs once, has the following characteristics and the operation of the network unit:
1, the outlet pressure of gas medium and inlet flow rate changes, sometimes may also produce gas reflux phenomenon. The gas medium is discharged from the compressor to the inlet.
2, the pipe network has periodic vibration, large amplitude, low frequency, and accompanied by periodic "roar" sound.
3, the compressor body shell, strong vibration, vibration of bearings are strong, and issued a strong periodic flow, due to the strong vibration and lubricating condition of the bearing will be damaged, the bearing will burn, even broken shaft, the rotor and the stator will cause friction, collision, sealing elements will be seriously damaged.
15, how to carry out the anti surge regulation?
The surge of great harm, but still can not be eliminated from the design, can only try to avoid running into the surge condition in operation, the principle of anti surge is to cause surge, would happen when surge, immediately try to increase the flow of the compressor, the unit operates from the surge area. There are three specific methods of anti surgeA:
1, part of the air defense law.
2, partial gas reflux method.
3, change the compressor operating speed method.
16 reasons, the compressor is running below the surge limit?
1, exit back pressure is too high.
2, the import pipeline valve throttle.
3, export pipeline valve throttle.
4, anti surge valve is defective or incorrect adjustment.
17. What are the methods of regulating the working conditions of the centrifugal compressor?
Because the production process parameters will inevitably change, so often need to perform manual or automatic adjustment of the compressor, the compressor can meet the requirements of production operation under variable conditions, in order to maintain the stability of production systems.
Adjust the pratta centrifugal compressor generally has two kinds: one is an adjustment, which is the premise in the back under the constant flow adjustment; the other is such as flow regulation, to ensure the exhaust pressure regulation of the compressor flow unchanged, specifically the following five types of regulation:
1, export flow regulation.
2, import flow regulation.
3, change the speed adjustment.
4, rotating inlet guide vane adjustment.
5, part of the vent or return regulation.
18, the speed of compressor performance?
The speed of the compressor has the function of changing the performance curve of the compressor, but the efficiency is the same.
19, equal pressure regulation, equal flow regulation and the meaning of proportional adjustment is what?
1, equal pressure regulation is to keep the compressor exhaust pressure unchanged, only to change the flow of gas regulation.
2, equal flow regulation is to maintain the flow of the compressor gas medium flow, but to change the discharge pressure adjustment.
3, the proportion of adjustment is to maintain constant pressure ratio (e.g. surge control), adjust or keep the two gas volume flow percentage change.
Source: pratta centrifugal air compressor http://www.shbolaite.cn (reproduced must indicate the source, rights reserved