And steam trap troubleshooting
This chapter presents the steam trap, almost all of the fault diagnosis and treatment method. Some problems are actually system, rather than the trap.
For each product application processing methods of fault, can contact with the manufacturer has more detailed information.
When we find the trap cannot work, and find out why should observe the trap of emissions. If the trap installed test valves, check up is quite simple. Conversely, will open outlet pipe.
Fault phenomena and processing methods:
I. cold valve - not drainage
II. Thermal valve - not drainage
III. Steam loss
IV. Continuously
V. heating slowly
VI. The puzzling problem
VII. Get rid of illusion
Cold valve - not drainage
If the trap, can discharge condensate:
A 1 original design pressure.
2. No pressure, the valve installed small mouth.
3 valve failure.
4 boiler pressure readings.
5 normal wear, seat bores amplification.
6 the water pipe in high vacuum increases the pressure difference, more than the trap of differential pressure.
B. water or steam not into the trap
1 prior to trap the filter clogging.
2 with the trap of pipeline has other damage.
3 lines or elbow jam.
C. abrasion or defect, needs to be repaired or replaced.
D. scanty water body by contamination jams, should install filters.
E is for the bucket trap, when the float vent barrel by contamination jams, should take the following measures:
1 install filters.
2 a vent expand slightly.
3 in vent placed in metal wire.
F. to float ball trap, if air vent work not clear, can produce gas-drag phenomenon.
G. to trap heat static model, the bellows blow may damage due to water element, make the trap shut up.
H. disc type of trap, trap may reverse.
Thermal valve - not drainage
A. no water to steam trap
1 the trap installed in the bypass valve leakage.
2 the siphon in dry cylinder rupture or discharge pipe.
3 water coil, vacuum. In the heat exchanger and trap installed vacuum between damage.
Steam loss
If the ejective fresh steam trap, probably due to the following reasons:
A. not close the valve
1 scale blocked seat bores.
2 parts wear.
B. the bucket trap doesn't work
1 if the steam trap interferences, fresh import valve closed for a few minutes, then slowly open. If the steam trap to work, is good trap.
2 the bucket trap doesn't work, usually because of the steam pressure changes caused by the sudden or often. In this case, can figure D and C position to install a check valve. If possible, should be installed in the trap water-collecting.
C) to float ball trap heat, static element may be damaged and not close.
Continuous emissions
If the bucket or disk type of trap continuous discharge, or floating ball or static type of trap heat, should check the full discharge factor:
A. the trap is too small
1. Replace big valve installed in parallel, or a trap.
2 could install a low-pressure occasions high-pressure steam trap. This should choose the appropriate agency in a trap.
B. supply conditions is not normal. The boiler running water, make a blister to steam pipe. Should be installed a water separator, change the water conditions.
Heating slowly
The trap of work, but the process heating element heating stagnation.
A. one or more units are short. Every solution is TiaoGuan online every install a trap.
B. despite looks very effective treatment, but actually condensate traps chosen too small. Try the bigger the trap.
C. trap air handling capacity may not come, or air trap. Use auxiliary emptying valve.
Common fault
If the atmospheric pressure, trap under normal work, but a backwater pipe connected with that problem, please check the following points:
A. back-pressure reduced emissions of trap.
1 the too fine - trap heat.
Two other may gush steam trap -- trap heat.
3 condensation water tank on emptying stomatal jams -- trap hot or cold. 4 return piping jams -- trap heat.
5. Return piping super vacuum - trap cold.
Get rid of illusion
If the trap each discharge condensate, have run out of steam condensate, please remember when they can form to low emissions, but generally braising steam pipeline in the water condensation quickly. Graph 3-2 see.
