There may be many problems in the operation of the low temperature test chamber. If your low temperature test chamber compressor has insufficient air volume, please refer to the following to solve the problem, or call us, our company will give a timely reply.
First, the failure of the air intake filter: fouling blockage, so that the exhaust volume is reduced, the suction pipe is too long, the pipe diameter is too small, resulting in increased suction resistance affects the gas volume, the filter should be cleaned regularly.
Second, the compressor speed is reduced to reduce the exhaust volume: the air compressor is used improperly, because the air compressor is designed according to a certain altitude, inhalation temperature and humidity, when it is used in excess of the above standards When the plateau is on, the suction pressure is lowered, and the displacement is inevitably lowered.
Third, the cylinder, piston, piston ring wear is serious, out of tolerance, the relevant clearance increases, the leakage increases, affecting the displacement: when it is normal wear, it is necessary to replace the wearing parts in time, such as piston rings. If the installation is not correct and the gap is not suitable, it should be corrected according to the drawings. If there is no drawing, the empirical data may be obtained. For the circumferential gap between the piston and the cylinder, such as the cast iron piston, the clearance value is the cylinder diameter. 0.06/100～0.09/100; for aluminum alloy pistons, the clearance is 0.12/100~0.18/100 of the diameter of the gas path; the steel piston can take the smaller value of the piston of the aluminum alloy.
Fourth, the stuffing box is not strict, resulting in air leakage to reduce the gas volume: the first reason is that the stuffing box itself is not required to be manufactured; the second reason may be that the piston rod and the stuffing box center are not well centered during installation, causing wear and strain Such as causing air leakage; generally filling the stuffing box with lubricating oil, which can play the role of lubrication, sealing and cooling.
5. The impact of the failure of the suction and exhaust valves of the high and low temperature test chamber compressor on the displacement: metal fragments or other debris are dropped between the valve seat and the valve plate, resulting in poor closure and leakage. This not only affects the amount of exhaust, but also affects the change in inter-stage pressure and temperature. This problem may arise due to manufacturing quality problems such as valve warpage, and second, due to serious wear of the valve seat and valve disc. And a leak is formed.
Sixth, the valve spring force and the gas force are not well matched: if the elastic force is too strong, the valve plate will be opened slowly, and if the elastic force is too weak, the valve plate will not be closed in time. These not only affect the air volume, but also affect the increase of power and gas. Valve valve, spring life. At the same time, it also affects changes in gas pressure and temperature.
7. The pressing force of the compression air valve is improper: if the pressing force is small, it will leak air. Of course, it will not be too tight, which will deform and damage the valve cover. The general pressing force can be calculated by the following formula: p=kπ/4 D2P2, D is the diameter of the valve cavity, P2 is the maximum gas pressure, K is the value greater than 1, generally 1.5 to 2.5, K=1.5 to 2.0 at low pressure, and K=1.5 to 2.5 at high pressure. Ok. If the gas valve is faulty, the valve cover will inevitably heat up and the pressure will not be normal.
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