Steam trap installation points and precautions Hangzhou Watt Energy Saving Engineering Co., Ltd. Technical Support Center Li Shaopeng The proper installation of steam traps has a direct impact on the normal operation of the trap and the production efficiency of the equipment. The use of traps has a 20% effect due to the quality of the installation. As a pressure pipeline component, Hangzhou Watt Energy Saving Engineering Co., Ltd. believes that it must be installed by qualified installation personnel in strict accordance with the requirements of the regular installation of traps, so that traps and equipment can achieve design efficiency. Before installation, steam traps need to carefully check the model, diameter, pressure difference, temperature, pressure, connection level and standard, and establish data statistics combined with on-site tag and trap number to facilitate the management and maintenance of trap operation. Watt traps must be pressure tested and leak tested before they leave the factory, if functional testing is available. And provide a one-on-one test report or certificate of compliance provided by the manufacturer. For special requirements of the trap, such as the requirements of material certificates, welding inspection certificates, gasket material certification, casting batch number, etc., must be checked before installation before installation. 4. The condensate flow direction should be consistent with the arrow of the trap installation arrow. For mechanical trap installation, install the manufacturer's mounting orientation. 19. For the application of condensate back pressure recovery, in order to prevent corrosion and accumulation of water, a bimetal trap is added at the bottom of the hydrophobic pipe and directly drained to facilitate the condensate draining at the time of starting and stopping. 21. For welded traps, when the pipe is welded, remove the inner parts and install them after welding. 22 , for the occasion of large load changes, you can use two different displacement traps installed in parallel up and down, small load traps to be installed in the lower part. 23 , Disc traps are installed outdoors or in a rainy environment, and need to add heat shields. 24 , mechanical traps are very sensitive to the maximum pressure difference, and must be checked during installation to ensure that the maximum working pressure difference is consistent with the design pressure differential on the valve nameplate. 25 , the installation of a diameter larger than DN40 trap must be well supported. Do not subject the trap to stress. 26 , before and after the installation of the trap diameter of the trap is likely not the same, the front press condensate, most of the back of the steam according to the second choice, the diameter of the condensate pipe using different heart diameter. 27. For the traps with relatively large diameter and relatively heavy weight, they must pay attention to the manufacturer's recommended center of gravity and force point during installation and transportation. 28 , traps need to do insulation, especially mechanical traps. It is recommended to use matching insulation jackets to facilitate valve inspection and maintenance. 29 , trap installation must consider maintenance and testing space, for the important trap to install high-temperature pipe mirror in front of the trap, the glass surface of the mirror should be easy to observe and distinguish the flow of soft drinks. 30. If the pipe behind the trap is connected to the main pipe, a miter must be used to avoid water hammer and mains erosion. The field experience of Hangzhou Watt Energy Conservation Engineering Co., Ltd. in the past 20 years shows that the steam trap is considered as a small component in the entire steam system, but it has a great impact on the system work and economic operation, so the maintenance and overhaul of the steam trap is also very important. Only full attention is paid to the important role of traps in production. Diligent maintenance, so that the trap is often in a good state of work, in order to ensure the operation of energy-saving effect and increase economic efficiency. Sometimes the mere waste of energy from a trap leak is also considerable. Magnetic Feeder,Electromagnetic Feeder,Magnetic Vibrating Feeder,Electric Magnetic Vibrating Feeder Xinxiang Zhenying Mechanical Equipment Co., Ltd , https://www.beltconveyor.nl
1, in the steam pipe pressure test, the trap should be removed, replaced by a short pipe, at least to close the front and rear manual valve trap isolation. Be sure to purge the pipes with pressurized steam before using the trap to remove debris from the pipes.
2. The filter should be installed before the trap to ensure that the trap is not blocked by pipe debris and the filter is cleaned regularly. Even if the trap comes with a filter, it is recommended to increase the external filter, the filter uses a 0.5-1mm aperture, too much pressure drop is too large, too thick to play a role.
3, traps should be installed in the lower part of the equipment outlet, promptly discharge condensate to avoid pipe steam resistance. However, the descending pipe sets the dirt collection section to prevent impurities from directly entering the trap.
5, before and after the trap to install the valve, easy to repair the trap at any time.
6. If there is no position to install the trap in the lower part of the equipment, add a reverse bend at the outlet of the outlet (condensate lifting joint), raise the condensate level and then install the trap to avoid generating vapor resistance.
7, the trap outlet pipe should not be immersed in water. (If immersed in water, drill a hole in the bend to break the vacuum and prevent the sand from sucking back.)
8. For steam traps that may generate steam locks, install a balance pipe on top of the trap.
9, steam traps do not install in series. For steam traps with poor venting capability, thermostatic type venting valves can be connected in parallel.
10. Each device should have its own trap. Can't cluster hydrophobic.
11. Before the thermostatic type steam traps, the supercooled pipes with at least one meter of uncooled heat shall be used according to the degree of supercooling. Other types of steam traps shall be as close as possible to the equipment.
12. When using tumble dryer (with syphon type) equipment, please indicate when using steam traps: Use steam traps with anti-blocking devices to prevent the device from generating steam locks.
13. If there is condensation water recovery after the trap, the trap outlet pipe should be connected to the main pipe from above the recovery manifold to reduce back pressure and prevent backflow.
14. If there is condensate recovery after the trap, pipelines with different pressure levels must be recycled separately.
15, after the trap condensate recovery mains can not climb, will increase the trap back pressure.
16. After the trap water enters the recovery main pipe, a check valve is installed to prevent condensation from flowing back. The check valve behind the thermodynamic trap should be kept at an interval of about 1m to avoid damage.
17. Install steam traps on the steam pipeline. The main pipeline must have a condensate collecting well close to the radius of the main pipeline, and then use a small pipe to guide the trap at a slightly elevated height. Small tubes must be kept warm and as short as possible.
18, mechanical traps do not use for a long time, to remove the sewage screw to release the water inside to prevent freezing.
20, found steam trap steam running, timely drainage and cleaning filters, according to the actual use of ground inspection, in case of failure to repair at any time. At least once a year to repair, remove the impurities inside.