How to solve the problem of insufficient pressure of the compressor in the high and low temperature alternating humidity test chamber?

First, what is the high and low temperature alternating humidity and heat test chamber? High and low temperature alternating humidity and heat test chamber can be used to simulate high temperature, low temperature, humid heat and other environmental conditions simulation, for aviation, aerospace, automotive, shipbuilding, information, military, electronics, new energy and other fields of materials, components, components, instrumentation and small equipment environmental reliability test, high temperature, low temperature, damp heat and other storage and circulation test
.

Second, the role of high and low temperature alternating humidity and heat test chamber compressor? The role of the compressor is to compress the low-pressure refrigerant vapor flowing from the evaporator, so that the pressure of the vapor is increased to the condensation pressure corresponding to the condensation temperature, so as to ensure that the refrigerant vapor can be condensed and liquefied at room temperature
.

Third, the cause of the problem and the solution: 1, the filter scale blockage, so that the exhaust volume is reduced
.

Workaround: Clean up the filter to fix the problem
.

2.
The suction pipe is too long and the diameter of the pipe is too small, resulting in increased suction resistance affecting the air volume; Solution: increase the diameter of the suction pipe, shorten the length of the suction pipe
.

3, the use of compressors beyond the standard, because the exhaust volume of the air compressor is designed according to a certain altitude, suction temperature and humidity, how to use in high altitudes, the suction pressure is reduced, and the exhaust volume will be insufficient
.

Solution: Replace the appropriate compressor
.

4, cylinder, piston, piston ring wear serious, exceptional, so that the relevant clearance increases, the amount of leakage increases, affecting the exhaust volume
.

Solution: If it is normal wear, it is necessary to replace the wearing parts in time, such as piston rings, etc
.

If it is not installed correctly, the gap is not appropriate, it should be corrected according to the drawings, such as no drawings, empirical data can be taken, for the gap between the piston and the cylinder along the circumference, such as cast iron piston, the gap value is 0.
06/100 ~ 0.
09/100 of the cylinder diameter; for the aluminum alloy piston, the gap is 0.
12/100 ~ 0.
18/100 of the air diameter diameter; the steel piston can take the smaller value
of the aluminum alloy piston.

5.
The filling letter is not strict, and the gas leakage is reduced
.

The reason for this is first of all that the filler letter itself is not up to the requirements when it is manufactured; Secondly, it may be due to the poor alignment of the piston rod and the center of the packing letter during installation, resulting in wear, strain, etc.
causing air leakage; Solution: Generally, lubricating oil is added to the packing letter, which can play a role
in lubrication, sealing and cooling.

6.
Metal fragments or other debris fall between the valve seat and the valve disc, resulting in lax closure and the formation of air
leakage.

This not only affects the exhaust volume, but also affects the change of intermediate pressure and temperature, this problem may be due to the first manufacturing quality problems, such as valve plate warpage, etc.
, the second is due to the valve seat and valve disc wear and form a leakage
.

Solution: Notify the manufacturer to overhaul or clean up 7, the valve spring force and the gas force match is not good
.

If the elasticity is too strong, the valve plate opens slowly, and if the elasticity is too weak, the valve plate is not closed in time, which not only affects the gas volume, but also affects the increase of power, as well as the life
of the valve disc and the spring.

At the same time, it will also affect the change of
gas pressure and temperature.

8.
The pressing force of the pressing valve is improper
.

The pressing force is small, then it is necessary to leak air, of course, too tight is not OK, it will make the valve cover deformed, damaged, the general compression force can be calculated in the following formula: p=kπ/4 D2P2, D is the valve cavity diameter, P2 is the maximum gas pressure, K is greater than 1 value, generally take 1.
5 ~ 2.
5, K = 1.
5 ~ 2.
0 at low pressure, K = 1.
5 ~ 2.
5 when high pressure, so take K, practice has proved to be good
.

If the valve fails, the valve cover will inevitably heat up, and the pressure is not normal
.

Fifth, the high and low temperature alternating humidity and heat test box box 1, Chuangsheng Technology: Chuangsheng Technology was established in 2010, now has more than 10 years of development history, has a good technical experience and service awareness, the products produced can meet the needs of most customers, product quality and after-sales service to most customers are satisfied
.

2.
Product features: The low-temperature constant temperature test chamber produced by Chongqing Chuangsheng Technology Co.
, Ltd.
has its own technical conditions
compared with other company products.

(1) Imported Taikang compressor meets most of the test conditions and reduces the lack
of pressure.

(2) Touch type color display + wireless alarm system, let you pay attention to the test situation anytime and
anywhere.

Avoid undesirable situations
.

(3) Strong technical conditions, able to maintain constant operation, program operation
.

Imported humidity sensor, imported humidity sensor, high accuracy, small annual drift, can fully ensure the high reliability
of humidity measurement.