一、加油站油氣回收檢測概述

　　1、 Overview of Oil and Gas Recovery Testing at Gas Stations

　　01檢測方法液阻檢測方法。以規(guī)定的氮氣流量向油氣回收管線內(nèi)充入氮氣，模擬油氣通過油氣回收管線。用壓力表或同等裝置檢測氣體通過管線的液體阻力，了解管線內(nèi)因各種原因?qū)怏w產(chǎn)生阻力的程度，用來判斷是否影響油氣回收。密閉性檢測方法。用氮氣對油氣回收系統(tǒng)加壓至500Pa，允許系統(tǒng)壓力衰減。檢測5min后的剩余壓力值與表

　　01 Detection method: Liquid resistance detection method. Inject nitrogen into the oil and gas recovery pipeline at a specified nitrogen flow rate to simulate the passage of oil and gas through the pipeline. Use a pressure gauge or equivalent device to detect the liquid resistance of gas passing through the pipeline, understand the degree of resistance caused by various reasons in the pipeline to determine whether it affects oil and gas recovery. Sealing testing method. Pressurize the oil and gas recovery system with nitrogen to 500Pa, allowing the system pressure to decay. Detect the remaining pressure value after 5 minutes and compare it with the table

　　2規(guī)定的最小剩余壓力限值進行比較，如果低于限值，表明系統(tǒng)泄漏程度超出允許范圍。氣液比檢測方法。在加油槍的噴管處安裝一個密合的適配器。該適配器與氣體流量計連接，氣流先通過氣體流量計，然后進入加油槍噴管上的油氣收集孔。所計量的氣體體積與加油機同時計量的汽油體積的比值稱為氣液比。

　　Compare the minimum residual pressure limit specified in 2, and if it is lower than the limit, it indicates that the degree of system leakage exceeds the allowable range. Gas liquid ratio detection method. Install a tight fitting adapter at the nozzle of the fuel gun. This adapter is connected to a gas flow meter, and the airflow first passes through the gas flow meter before entering the oil and gas collection hole on the nozzle of the fuel gun. The ratio of the volume of gas measured to the volume of gasoline measured simultaneously by the fuel dispenser is called the gas-liquid ratio.

　　01通過氣液比的檢測，可以了解油氣回收系統(tǒng)的回收效果。

　　By detecting the gas-liquid ratio, the recovery efficiency of the oil and gas recovery system can be understood.

　　02計量器具控制計量器具控制包括首次檢測和后續(xù)檢測。

　　02 Measuring Instrument Control Measuring instrument control includes initial testing and subsequent testing.

　　03檢測條件環(huán)境溫度（0-35）℃，常壓。

　　03 Testing conditions: Environmental temperature (0-35) ℃, atmospheric pressure.

　　04檢測用設(shè)備氮氣罐、壓力表、浮子流量計、適配器、加壓軟管、快接接頭、氣體流量計、檢測用油桶。

　　04 Testing equipment includes nitrogen tanks, pressure gauges, float flow meters, adapters, pressure hoses, quick couplings, gas flow meters, and oil drums for testing.

　　05檢測項目1.液阻檢測2.密閉性檢測3.氣液比檢測二、加油站油氣回收檢測流程1檢測前的準備2通知被測單位提前設(shè)備自檢現(xiàn)場檢測前先和被測單位取得聯(lián)系，要求油氣回收裝置的施工、安裝單位人員先期到達被測單位進行設(shè)備自檢，要求管道無泄漏，對所有用于油氣回收裝置的各個零部件的工作狀態(tài)進行調(diào)試，確定其工作正常、穩(wěn)定。

　　05 Testing items: 1. Liquid resistance testing 2. Airtightness testing 3. Gas liquid ratio testing 2. Gas station oil and gas recovery testing process 1. Preparation before testing 2. Notify the tested unit to conduct equipment self inspection in advance. Contact the tested unit before on-site testing, and require personnel from the construction and installation units of the oil and gas recovery device to arrive at the tested unit for equipment self inspection in advance. Ensure that the pipeline is leak free, and debug the working status of all components used for the oil and gas recovery device to ensure that they are working normally and stably.

　　3通知被測單位做好檢測準備檢測工作具體時間需提前通知被測單位，要求做好滿罐存油準備以有利于檢測，在檢測之前24小時內(nèi)不允許進行氣液比檢測，在檢測前3小時內(nèi)和在現(xiàn)場檢測過程中，不得有大批量油品進出儲油罐，在檢測前30分鐘停止加油作業(yè)。用安全圍欄圈定現(xiàn)場檢測區(qū)域、油罐并操作區(qū)域，提出安全警示，現(xiàn)場準備消防設(shè)施（干粉滅火器、石棉毯等），非現(xiàn)場操作人員不得進入相關(guān)區(qū)域?，F(xiàn)場工作人員需按照相關(guān)安全要求更換防靜電工作服、關(guān)閉所有通訊設(shè)備、車輛熄火、不許攜帶火源等，嚴格遵守被檢單位的其他要求。

　　3. Notify the tested unit to prepare for testing. The specific time for testing work needs to be notified in advance, and it is required to prepare for full tank storage to facilitate testing. Gas liquid ratio testing is not allowed within 24 hours before testing. Within 3 hours before testing and during on-site testing, there should be no large quantities of oil entering or leaving the storage tank. Refueling operations should be stopped 30 minutes before testing. Use safety fences to delineate the on-site inspection area, oil tank and operation area, issue safety warnings, prepare fire-fighting facilities on site (dry powder fire extinguishers, asbestos blankets, etc.), and non on-site operators are not allowed to enter the relevant areas. On site staff are required to replace anti-static work clothes, turn off all communication equipment, turn off vehicles, and prohibit carrying fire sources in accordance with relevant safety requirements, and strictly comply with other requirements of the inspected unit.

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