次油气回收装置采用撬装式集成设计，现场安装工作量比传统散件组装小很多，不少项目方因此放松了警惕。但越是看起来简单，越容易在几个关键环节出问题。根据现场经验，装置安装最常见的误区集中在管路连接、设备基础和电气接线三方面。本文把这几个易错点梳理出来，供施工和油站运维人员对照自查。

The secondary oil and gas recovery device adopts a pry mounted integrated design, and the on-site installation workload is much smaller than traditional loose component assembly, which has led many project parties to relax their vigilance. But the simpler it looks, the easier it is to encounter problems in several key stages. Based on on-site experience, the most common misconceptions in device installation are concentrated in three aspects: pipeline connection, equipment foundation, and electrical wiring. This article summarizes these common mistakes for construction and gas station operation and maintenance personnel to compare and self check.

管路连接的常见误区

Common misconceptions about pipeline connections

管路环节最典型的问题是进气管和回油管附件不齐全、气密性试验被忽略。进气管路必须加装截止阀与阻火器，回油管路必须加装截止阀与止逆阀，这些附件是保证装置安全隔离和防止油气倒灌的关键。有的项目图省事省略了止逆阀，卸油时可能出现油气倒流。另一个常见问题是管路做完直接投用、不做气密性试验，接头处微漏当时察觉不到，运行后才发现损耗异常。管路完成后务必逐段做气密性试验。

The most typical problem in the piping process is that the accessories of the intake and return pipes are incomplete, and the airtightness test is ignored. The intake pipeline must be equipped with shut-off valves and flame arresters, and the return pipeline must be equipped with shut-off valves and check valves. These accessories are key to ensuring the safe isolation of the device and preventing oil and gas backflow. Some project drawings omit check valves to save time, which may cause oil and gas backflow during oil unloading. Another common problem is that the pipeline is directly put into use without conducting an air tightness test, and slight leaks at the joints are not detected at the time. It is only after operation that abnormal losses are discovered. After the pipeline is completed, it is necessary to conduct air tightness tests section by section.

设备基础的常见误区

Common Misconceptions in Equipment Fundamentals

撬装式装置虽然占地小，但基础同样不能马虎。常见误区包括基础不平整、不高于地面、四周没有预留排水。基础不平会导致撬体受力不均，影响内部管路连接和设备稳定；基础与地面平齐或低于地面，雨天容易积水浸泡设备底部，造成电控箱和管路锈蚀。正确做法是做一块平整且高于地面的混凝土基础，四周留排水坡度，避免设备长期浸泡在积水中。

Although the pry mounted device occupies a small area, the foundation cannot be careless either. Common misconceptions include uneven foundation, not higher than the ground, and no reserved drainage around. Uneven foundation can lead to uneven force distribution on the pry body, affecting internal pipeline connections and equipment stability; The foundation is level with or below the ground, and in rainy weather, it is easy for water to accumulate and soak the bottom of the equipment, causing corrosion of the electrical control box and pipelines. The correct approach is to create a flat and elevated concrete foundation, with drainage slopes around it to avoid long-term immersion of equipment in accumulated water.

电气接线的常见误区

Common Misconceptions in Electrical Wiring

电气环节的误区包括相序接错、接地不达标、带电作业。三次装置对三相电源相序有要求，相序错误时设备无法启动，相序保护灯会亮红，此时只需断电后调换任意两根相线顺序重新上电即可。接地系统是防爆设计的关键，接地电阻必须满足要求，接地线要完好紧固。还有一项容易被忽视的是严禁带电打开防爆接线盒盖，必须断电并确认现场可燃气体浓度达到安全水平后再作业。

Misconceptions in the electrical process include incorrect phase sequence connections, inadequate grounding, and live working. The tertiary device has requirements for the phase sequence of the three-phase power supply. When the phase sequence is wrong, the equipment cannot be started, and the phase sequence protection light will be red. At this time, just switch off the power and then switch any two phase lines to power on again. The grounding system is the key to explosion-proof design, and the grounding resistance must meet the requirements. The grounding wire must be intact and securely fastened. Another easily overlooked item is that it is strictly prohibited to open the explosion-proof junction box cover with electricity. The power must be cut off and the concentration of combustible gases on site must be confirmed to be at a safe level before operation.

把这些要点写进施工交底

Write these key points into the construction briefing

这些误区大多不是技术难题，而是施工和运维流程里的疏漏。建议将管路附件、气密性试验、基础排水和电气规范写成施工交底清单，安装和验收时逐项核对。把细节盯到位，撬装式三次油气回收装置才能一次安装到位、稳定达标运行，避免后续反复排查和返工。

Most of these misconceptions are not technical problems, but rather oversights in the construction and operation processes. It is recommended to write a construction disclosure list for pipeline accessories, air tightness tests, foundation drainage, and electrical specifications, and check each item during installation and acceptance. Only by paying close attention to the details can the three stage oil and gas recovery device be installed in place and operate stably, avoiding repeated inspections and rework in the future.

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