Myanmar What protective installations are required for a fully automatic liquid dispensing system used outdoors?

Fully automatic liquid dispensing systemMostly used in chemical, environmental, water treatment and other scenarios, some projects require direct placement in outdoor environments. The outdoor environment is affected by various external factors such as sun exposure, rain, dust, temperature differences, and lightning. Without supporting protective installations, equipment electronic control components, pipelines, and sensors are prone to malfunction, affecting the accuracy of liquid preparation and the stability of equipment operation. This article introduces various protective installation projects that need to be implemented for outdoor fully automatic liquid dispensing systems, providing reference for engineering installation and equipment selection.

1、 Equipment shell and cabinet protection installation

The fully automatic liquid dispensing system placed outdoors should prioritize cabinet protection to resist rainwater, dust, and UV aging. Equipment control cabinets and instrument boxes should be equipped with protective enclosures that are suitable for outdoor environments. The enclosure protection level should meet the requirements of the on-site environment, and sealing strips should be installed at the joints of the enclosure to prevent rainwater and dust from infiltrating.

The surface of the box is treated with a weather resistant coating to reduce the aging and fading of the coating caused by long-term sun exposure. The cabinet is equipped with a sunshade and rainproof structure, which can be matched with a rainproof ceiling to reduce direct sunlight and direct rainwater erosion. The bottom of the box needs to be elevated, and a concrete foundation or metal base should be made to avoid soaking the cabinet in water on the ground. The base should reserve drainage slopes and holes to timely drain the accumulated water at the bottom.

2、 Electrical system protection installation

Electrical components are the core of fully automatic liquid dispensing systems, and outdoor humid and condensed environments can easily cause short circuits and signal abnormalities. All outdoor electrical junction boxes and terminals need to use waterproof connectors, and the cable sheath should be well protected. Waterproof cables or galvanized protective pipes should be used for cable laying, and waterproof sealing treatment should be applied to the cable joint positions.

Install temperature and humidity control devices inside the control cabinet, matched with dehumidification heaters, to reduce condensation and water accumulation inside the cabinet in areas with large temperature differences between day and night, and protect electronic control devices such as PLC, frequency converter, and relay. The electrical grounding device shall be constructed according to the specifications, and protective grounding shall be done to reduce the safety hazards caused by leakage. The selection of electrical components needs to be adapted to the outdoor temperature range to avoid low-temperature shutdown or high-temperature overheating.

3、 Protective installation of pipelines and valves

The liquid preparation system includes a feed pipeline, a clean water pipeline, a discharge pipeline, as well as various regulating valves, ball valves, and flow meters. Outdoor environments can accelerate pipeline aging. Install insulation protection layer on the outer layer of outdoor pipelines. In high temperature environments, a sun protection layer can be used, and in low temperature environments, a heat tracing insulation structure can be added to prevent medium freezing and pipeline cracking.

The pipeline joints and flange positions should be well protected against water and dust to avoid long-term erosion by rainwater that may cause aging and leakage of seals. Flow meters, online concentration sensors and other detection components need to be equipped with protective brackets and covers to avoid external collisions and direct sunlight affecting detection accuracy. Pipeline supports are made of anti-corrosion materials and undergo anti-corrosion treatment before installation to reduce corrosion caused by rainwater and moisture.

4、 Installation of lightning protection and anti-static protection

Outdoor equipment is located in an open environment, and there is a risk of induced lightning strikes during thunderstorm weather, requiring supporting lightning protection installation. Install power lightning arresters at the power inlet end, and install signal lightning arresters on the signal lines to protect the control system and detection instruments. The metal cabinets, pipelines, and brackets of the entire system are connected to equipotential, and the grounding grid is constructed according to engineering specifications. The grounding resistance meets the design standards.

For some liquid preparation scenarios with flammable and explosive media, anti-static bridging should be done for pipelines and equipment bodies to eliminate static electricity accumulation and reduce safety hazards caused by static electricity.

5、 Anti corrosion protection installation

The water vapor and dust in the outdoor air, as well as the presence of corrosive gases in some factory areas, can cause corrosion of equipment metal components. Carbon steel components require rust removal and multi-layer anti-corrosion coating; Pipelines and tanks that come into contact with corrosive media should be lined with anti-corrosion materials or made of stainless steel according to the characteristics of the media.

Priority should be given to using corrosion-resistant materials for equipment brackets and anchor bolts. Regularly inspect the location of coating damage and repair it in a timely manner to avoid gradual expansion of rust. If located in a coastal salt spray area, it is necessary to improve the anti-corrosion level, increase the coating thickness, and reduce the salt spray corrosion rate.

6、 Installation of environmental monitoring and auxiliary protective devices

According to the on-site working conditions, environmental monitoring components can be installed to collect real-time environmental temperature and humidity. Set up protective fences around the equipment to prevent accidental collisions between personnel and vehicles, while also providing isolation and protection. In areas prone to strong winds, the equipment base should be anchored and fixed to reinforce the equipment and resist the shaking caused by strong winds.

In some rainy areas, drainage ditches are set up around the equipment to guide rainwater to be discharged outward and prevent long-term soaking of the equipment foundation.

7、 Key points for installation acceptance and post maintenance support

After the protective installation is completed, it is necessary to inspect the sealing, grounding, lightning protection, insulation and other structures item by item to test the protective effect. After the equipment is put into use, regularly check whether the sealing strips, anti-corrosion coatings, and cable waterproof joints are aging or damaged, and promptly replace faulty parts to ensure the continuous effectiveness of the protective function. Regularly clean the dust accumulated on the surface of the cabinet and sensors to avoid affecting heat dissipation and detection accuracy.

Summary

outdoorsFully automatic liquid dispensing systemThe protective installation is a comprehensive project, mainly including cabinet rainproof and sun protection, electrical waterproof and condensation protection, pipeline insulation protection, lightning protection and anti-static installation, metal component anti-corrosion treatment, as well as supporting measures such as foundation drainage and equipment anti-collision fixation. Proper installation of a complete set of protective measures can reduce the impact of environmental factors on the accuracy of liquid dispensing and equipment lifespan, ensure the long-term stable operation of the fully automatic liquid dispensing system, and reduce the probability of failure and shutdown.