CentrifugalCompressorAs a result, all the bearings of the leaves were damaged and the entire line stopped; the screws and pistons were still breathing. It's not the job, it's the compression principle itself。
SpiralCompressor principles. Jin
The screw compressor is a typical volume device, which rotates precisely by a yeast rotor, trapping the gas in an independent sealed cavity. The cavity is closed immediately after the infusion has been completed, the rotor continues to rotate, the cavity volume gradually shrinks, and the gas is squeezed hard into a one-way discharge after the set pressure. The entire air current is headed in only one direction, with no pouring channels and no asthma at the root。
Even if the network pressure suddenly surges and the equipment is pressed to a very low load, a one-way internal exhaust structure and the rotor's self-sealed properties of the propeller will prevent the return of the gas. The rotors are still spinning, but the emissions are naturally decreasing and the pressure is automatically balanced. There is no periodic shock of "up-up-up-up-up-up," so the screwrs can run between 30% and 100% of the total load。
Centrifugal compressor, natural shortboard for speed
CentrifugalIt is a speed-type device, without a closed compression cavity, that transforms the gas kinetic energy into a pressure energy by a high speed rotation of the wheel. The rated low-flow gas stream follows the blades and the pressure is flat; once the flow breaks through the threshold, there is a stream separation and vortex on the face of the leaf, and the export pressure falls off the cliff, directly below the barrel back pressure。
The back pressure is higher than the export pressure, and the high-pressure gas reverses back to the wheel and breaks the normal exhaust top. The crew was forced to re-pressurize and was flushed with high pressure, and the cycle was repulsive. This is a theoretical flaw in the speed compressor, which is highly triggered under 40 per cent of the load, and the industry can only be completely eliminated by using gas-resistant valves and circuits。
PistolCompressor, rigid one-way compression without reverse conditions
The piston is also a volume device, which moves back and forth in the cylinders, along with the one-way and exhaust valves, inhaling, compressing and exhausting three stages. Once the cylinder is sealed, the high-pressure gas can only go one-way out of the exhaust valve and there is no reverse circuit. There are no physical conditions for cyclical gas erosion and no soil on pistons。
When the network pressure is too high, the piston is protected by a safety valve to jump out pressure or by an automatic stopper. The worst result is that the valve moves, the pressure returns to safety and the core parts are intact. The actual pistols can work smoothly at 30 per cent to 100 per cent of their load, while the low load and high pressure are the most stable scene, with no need for additional respiration。
Three types of compressor operating properties. The pit
The centrifuges are narrow, usually 40 per cent to 100 per cent of the load is stable, and must be equipped with an anti-pansive vibration valve and a reflow system, which is complex; the screwrs and pistons are wide enough to be dry from 30 per cent to 100 per cent of the full load and do not require any respiratory vibrators. The flow is stable, the centrifuge is low-flowable and vortex is refilled, the volume of the whole journey is closed in one-way circles and there is no convulsion。
In selecting the type, if the production line functions frequently and at low loads, the network pressure fluctuates, priority is given to screws or pistons, and the risk of asthma is cut off from the source. Only a continuous process with a high flow and steady load is suitable for a centrifuge, but the asthma-resistant system must be fully equipped, with valve seals and regular flow-back route inspections, which cannot be avoided。
How do you protect the low load
The frequency of the opening of the asthma-resistant valve and the sealing of the circuits in the daily operation of the centrifuge are subject to monthly inspection. Once the control system detects an exhaust flow of less than 80 per cent of the asthma line, it must immediately trigger a return flow and re-push the gas back to the gas side to prevent recharge. Service providers, such as sialtek, can customize their load optimization strategies to lock the aircraft in a safe operating zone, depending on the actual performance of the enterprise。
The screwrs and pistons operate with a completely different focus, mainly the ageing of the seals, the grinding of the valves and the cleaning of the lubricants, with a much shorter inspection cycle than the centrifuge and no need to stare at the pneumatic cone. Low-load, high-pressure scenarios, direct build-up changes, high-cost transportation, and low-intensity staff。
Breathing the broken chain is faster than i thought
Each time the centrifuge is in shock, the wheel bears an instant shock load, the bearing wears up, and the kinetic balance is broken. Repeatedly, the post-leaf crack spreads, which, in serious cases, break directly, and the entire crew is scrapped. In 2024, a large centrifuge unit in a chemical plant site had three consecutive asthma attacks, second-stage fliers had been damaged, a one-week stopover had been delayed, and production lines had been lost by more than 2 million。
The screwrs and pistons do not have this broken chain, and the worst case is for the safety valve to jump or stop, and the core parts are intact. That's why the industry is only linked to centrifuges. This pattern of failure does not exist under normal conditions of volume equipment, and the choice of pair is much more important than the subsequent fire-fighting。
Is your factory compressor a centrifuge or a screwr? If it's running at a low load, how often does the asthma-proof valve go through it? The comment area would be welcome to talk, and i thought it would be useful to remember a few words。
