緊急排查！三次油氣回收設備罐內持續負壓，設備不啟動？

　　Urgent investigation! Continuous negative pressure in the tank of the three oil and gas recovery equipment, and the equipment does not start?

　　3步快速解決三次油氣回收設備是加油站、儲油庫等場所踐行環保合規、控制VOCs（揮發性有機化合物）排放的核心設備，其穩定運行直接關系到企業環保達標與安全生產。但在實際運維過程中，不少從業者都會遇到一個棘手問題——罐內持續處于負壓狀態，進而導致三次油氣回收設備無法正常啟動，不僅影響油氣回收效率，還可能面臨環保處罰風險。據行業運維數據顯示，42%的三次油氣回收設備故障與罐內負壓異常有關，其中68%的負壓問題可通過簡單排查快速解決，無需專業維修團隊介入。今天，結合實操經驗與行業規范，詳解三次油氣回收設備罐內持續負壓的成因及排查解決方法，幫從業者快速脫困、保障設備正常運行。

　　The three-step quick solution for tertiary oil and gas recovery equipment is the core equipment for gas stations, oil storage facilities, and other places to practice environmental compliance and control VOCs (volatile organic compounds) emissions. Its stable operation is directly related to the environmental standards and safety production of enterprises. However, in the actual operation and maintenance process, many practitioners will encounter a thorny problem - the tank is continuously in a negative pressure state, which leads to the inability of the three oil and gas recovery equipment to start normally, not only affecting the efficiency of oil and gas recovery, but also possibly facing environmental penalties. According to industry operation and maintenance data, 42% of three oil and gas recovery equipment failures are related to abnormal negative pressure inside the tank, of which 68% of negative pressure problems can be quickly solved through simple troubleshooting without the need for professional maintenance teams to intervene. Today, based on practical experience and industry standards, we will provide a detailed explanation of the causes and troubleshooting methods for the continuous negative pressure inside the three oil and gas recovery equipment tanks, helping practitioners to quickly escape and ensure the normal operation of the equipment.

　　首先明確核心痛點：三次油氣回收設備對罐內壓力有嚴格的運行要求，一旦罐內持續處于負壓狀態，設備會觸發壓力保護機制，自動停止啟動，避免因壓力異常造成設備損壞或安全隱患。罐內負壓的形成，本質是罐內氣體收支失衡，導致內部壓力低于外界大氣壓，長期負壓不僅會導致設備無法啟動，還可能損傷儲罐，甚至引發油氣泄漏等安全問題，據實測，罐內負壓持續超過2小時，儲罐受損概率會提升35%。

　　Firstly, clarify the core pain point: The tertiary oil and gas recovery equipment has strict operating requirements for the pressure inside the tank. Once the tank is continuously in a negative pressure state, the equipment will trigger a pressure protection mechanism, automatically stop starting, and avoid equipment damage or safety hazards caused by abnormal pressure. The formation of negative pressure inside the tank is essentially due to the imbalance of gas balance inside the tank, resulting in an internal pressure lower than the external atmospheric pressure. Long term negative pressure can not only cause equipment to fail to start, but also damage the storage tank, and even cause safety issues such as oil and gas leaks. According to actual measurements, if the negative pressure inside the tank continues for more than 2 hours, the probability of tank damage will increase by 35%.

　　遇到三次油氣回收設備因罐內負壓無法啟動時，無需盲目停機檢修，核心排查以下三項，即可快速定位問題、解決隱患，兼顧專業性與實操性，適合一線運維人員操作。

　　When encountering three situations where the oil and gas recovery equipment cannot be started due to negative pressure inside the tank, there is no need to blindly shut down for maintenance. Focus on investigating the following three items to quickly locate the problem, solve hidden dangers, and balance professionalism and practicality. It is suitable for frontline operation and maintenance personnel to operate.

　　第一項，核心檢查排氣管上的呼吸閥（又稱壓力/真空閥），這是導致罐內負壓非常常見的原因，占負壓故障的53%。呼吸閥的核心作用是調節油罐內外壓差，當罐內壓力降低到設定真空值時，呼吸閥會自動開啟，讓外界空氣進入油罐，避免罐內產生負壓、被大氣壓癟。若呼吸閥出現卡滯、粘連等故障無法正常工作，隨著加油機持續向外加油，罐內液位不斷下降，內部氣體體積提升，壓力逐漸降低，就會形成持續負壓，進而觸發設備保護機制，導致三次油氣回收設備無法啟動。排查時需觀察呼吸閥是否能正常開啟，清理閥口雜質，確保其能根據罐內壓力變化靈活動作，若呼吸閥損壞，需及時更換符合API 2000標準的合格產品。

　　The first item is to focus on checking the breathing valve (also known as pressure/vacuum valve) on the exhaust pipe, which is the most common cause of negative pressure in the tank, accounting for 53% of negative pressure failures. The core function of the breathing valve is to regulate the pressure difference inside and outside the oil tank. When the pressure inside the tank drops to the set vacuum value, the breathing valve will automatically open, allowing outside air to enter the oil tank, avoiding negative pressure and collapse by atmospheric pressure inside the tank. If the breathing valve malfunctions such as jamming or adhesion and cannot work properly, as the refueling machine continues to refuel outward, the liquid level in the tank continues to decrease, the internal gas volume increases, and the pressure gradually decreases, a continuous negative pressure will be formed, which will trigger the equipment protection mechanism and cause the three times oil and gas recovery equipment to fail to start. When troubleshooting, it is necessary to observe whether the breathing valve can be opened normally, clean the impurities at the valve port, and ensure that it can move flexibly according to the pressure changes inside the tank. If the breathing valve is damaged, it should be replaced with a qualified product that meets the API 2000 standard in a timely manner.

　　第二項，檢查油氣回收回氣系統是否正常，這一問題占負壓故障的27%。三次油氣回收系統的正常運行，依賴于油氣的“回收-回輸”循環，若油氣回收回氣不順暢、甚至中斷，在持續加油過程中，罐內油氣被不斷抽出，卻無法通過回氣系統補充，會導致罐內氣體總量減少，形成負壓。排查時需檢查回氣管道是否堵塞、回氣閥門是否完全開啟，確認油氣能順暢回輸至罐內，同時檢查管道接頭、法蘭密封墊是否泄漏，避免因泄漏導致回氣不足，進一步加劇負壓問題。

　　The second item is to check whether the oil and gas recovery and return system is normal, which accounts for 27% of negative pressure faults. The normal operation of the three-stage oil and gas recovery system relies on the "recovery return" cycle of oil and gas. If the oil and gas recovery return is not smooth or even interrupted, during the continuous refueling process, the oil and gas in the tank will be continuously extracted but cannot be replenished through the return system, which will result in a decrease in the total amount of gas in the tank and the formation of negative pressure. When troubleshooting, it is necessary to check whether the return gas pipeline is blocked, whether the return gas valve is fully opened, and confirm that the oil and gas can be smoothly returned to the tank. At the same time, check whether the pipeline joints and flange gaskets are leaking to avoid insufficient return gas caused by leakage, which further exacerbates the negative pressure problem.

　　第三項，檢查三次油氣回收設備的壓力傳感器，這是非常易被忽視的隱性原因，占負壓故障的20%。壓力傳感器是設備監測罐內壓力的核心部件，負責實時傳輸壓力數據，若傳感器出現故障、數據漂移或損壞，會錯誤顯示罐內處于負壓狀態，導致設備誤觸發保護機制，無法正常啟動，實則罐內壓力可能處于正常范圍。排查時可通過專業儀器校準壓力傳感器，檢查傳感器接線是否牢固，若傳感器故障，需及時更換高精度傳感器（誤差≤±0.25% FS），確保壓力監測數據準確無誤，避免設備誤判。

　　The third item is to check the pressure sensor of the oil and gas recovery equipment three times, which is the most easily overlooked hidden cause, accounting for 20% of negative pressure failures. The pressure sensor is the core component of the equipment for monitoring the pressure inside the tank, responsible for real-time transmission of pressure data. If the sensor malfunctions, drifts or is damaged, it will erroneously display that the tank is in a negative pressure state, causing the equipment to trigger the protection mechanism incorrectly and fail to start normally. In fact, the pressure inside the tank may be within the normal range. When troubleshooting, the pressure sensor can be calibrated with professional instruments to check if the sensor wiring is secure. If the sensor fails, it is necessary to replace the high-precision sensor in a timely manner (with an error of ≤± 0.25% FS) to ensure accurate pressure monitoring data and avoid equipment misjudgment.

　　需要非常提醒的是，三次油氣回收設備罐內負壓問題雖多可通過上述三步排查解決，但日常運維也至關重要。據行業調研顯示，做好日常維護的企業，罐內負壓故障發生率可降低70%以上。建議定期檢查呼吸閥的密封性與靈活性，每6個月校準一次壓力傳感器，每月清理回氣管道雜質，避免因維護疏漏導致負壓問題反復出現，同時嚴格遵循《油氣回收處理設施技術標準》（GB/T50759-2022），確保設備運行符合規范。

　　It should be noted that although the negative pressure problem inside the tank of the tertiary oil and gas recovery equipment can be solved through the above three steps of troubleshooting, daily operation and maintenance are also crucial. According to industry research, companies that do a good job in daily maintenance can reduce the occurrence rate of negative pressure faults in tanks by more than 70%. It is recommended to regularly check the sealing and flexibility of the breathing valve, calibrate the pressure sensor every 6 months, clean the impurities in the return gas pipeline every month to avoid repeated negative pressure problems caused by maintenance omissions, and strictly follow the "Technical Standards for Oil and Gas Recovery and Treatment Facilities" (GB/T50759-2022) to ensure that the equipment operates in compliance with regulations.

　　對于加油站、儲油庫等從業者而言，三次油氣回收設備的穩定運行是環保合規的基礎，罐內持續負壓導致設備不啟動，不僅影響日常運營，還可能因油氣回收中斷面臨環保處罰——根據《大氣污染防治法》，油氣回收設備未正常運行，可處10萬元以上50萬元以下罰款。掌握上述三項排查方法，可快速解決大部分負壓問題，避免因小故障造成大損失。

　　For practitioners in gas stations, oil storage facilities, and other industries, the stable operation of tertiary oil and gas recovery equipment is the foundation of environmental compliance. Continuous negative pressure inside the tank causing the equipment to fail to start not only affects daily operations, but may also face environmental penalties due to interruption of oil and gas recovery. According to the "Air Pollution Prevention and Control Law", if the oil and gas recovery equipment does not operate normally, a fine of no less than 100000 yuan and no more than 500000 yuan may be imposed. Mastering the above three troubleshooting methods can quickly solve most negative pressure problems and avoid major losses caused by minor malfunctions.

　　綜上，三次油氣回收設備罐內持續負壓、無法啟動，并非復雜故障，核心多源于呼吸閥失效、回氣不暢或壓力傳感器故障。只要按照“先查呼吸閥、再查回氣系統、非常后查壓力傳感器”的順序排查，就能快速定位問題、出色解決，無需專業維修團隊介入，大幅降低運維成本。對于一線運維人員而言，掌握這些實操技巧，既能保障設備穩定運行，也能避免因負壓問題引發的環保與安全隱患，助力企業實現合規、出色運營。

　　In summary, the continuous negative pressure and inability to start in the tank of the three oil and gas recovery equipment are not complex faults. The core causes are mainly due to the failure of the breathing valve, poor return air, or pressure sensor faults. As long as the order of "checking the breathing valve first, then the return air system, and finally the pressure sensor" is followed for troubleshooting, the problem can be quickly located and efficiently solved without the need for professional maintenance teams to intervene, greatly reducing operation and maintenance costs. For frontline operation and maintenance personnel, mastering these practical skills can not only ensure the stable operation of equipment, but also avoid environmental and safety hazards caused by negative pressure problems, helping enterprises achieve compliant and efficient operations.

　　本文由  三次油氣回收設備  友情奉獻.更多有關的知識請點擊http://www.gdsthf.com/真誠的態度.為您提供為多維度的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

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