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電子膨脹閥故障分析及處理

電子膨脹閥故障分析及處理

作者:廣旭國際貿易????來源:????發布時間:2020-08-14 14:15????瀏覽量:
電子膨脹閥故障分析及處理
Failure analysis and treatment of electronic expansion valve
 
 
    電子膨脹閥會有一個或另一個故障。當發生故障時,需要對故障進行分析,以便采取正確的措施解決電子膨脹閥的故障。裕隆、嘉興、北京的電子膨脹閥故障大致分為三類:一類是電子節氣門部件故障,一類是噴嘴部件故障,另一類是閥體部件故障。以下是針對這三類故障總結的故障分析和處理方法。
There will be one or another malfunction of the EEV. When the fault occurs, it is necessary to analyze the fault, so as to take correct measures to solve the fault of the electronic expansion valve. The faults of electronic expansion valve in Yulong, Jiaxing and Beijing can be roughly divided into three categories: one is electronic throttle component failure, one is nozzle component failure, the other is valve body component failure. The following are the fault analysis and treatment methods summarized for these three types of faults.
 
 
    一。電子節氣門元件的失效分析與處理
One. Failure analysis and treatment of electronic throttle components
 
 
    打開電子節流元件外殼,接通裝置電源,用手握住電子膨脹閥線圈,檢查是否有動作,線圈是否有工作指示,若無動作,按以下步驟檢查:
Open the shell of the electronic throttle element, turn on the power supply of the device, and hold the coil of the electronic expansion valve by hand to check whether there is any action and whether the coil has working indication. If there is no action, check according to the following steps:
 
    1 檢查電子膨脹閥線圈體是否斷裂。如果是,重新連接電線。
1. Check whether the coil body of EEV is broken. If so, re connect the wires.
 
    2 檢查電子膨脹閥線圈與主板連接器連接是否松動。如果是,請重新插入。
2 check whether the connection between the coil of the electronic expansion valve and the main board connector is loose. If so, please re insert.
 
    3 檢查主板是否有故障報警,排除其他因素。
3. Check whether there is fault alarm on the main board and eliminate other factors.
 
    4 檢查主板輸出電壓是否正常DC 12V。
4. Check whether the output voltage of main board is normal DC 12V.
 
    5 測量電子膨脹閥線圈電阻是否正常463。如果異常,更換線圈。
5 .measure whether the coil resistance of the electronic expansion valve is normal 463. If abnormal, replace the coil.
 
    二。噴嘴失效分析及處理
Two. Failure analysis and treatment of nozzle
 
    1 將肥皂水涂在管道的所有焊接部位和螺母連接部位,看是否有氣泡。如果有泄漏,重新焊接或調整。
Apply soapy water to all welding parts and nut connection parts of the pipe to see if there are bubbles. If there is leakage, re weld or adjust.
 
    2 管道重新焊接前,應按使用要求對閥體進行保護,并對系統進行清洗。
2. Before re welding the pipeline, the valve body should be protected according to the use requirements, and the system should be cleaned.
 
    三。閥體故障分析與處理
3. Fault analysis and treatment of valve body
 
    確認線圈部分的電阻和接頭正常后,接通機組電源運行,用手握住閥體部分,感覺閥體是否動作。閥體從完全打開到完全關閉的時間約為6秒。當閥體處于全開或全關位置時,如果持續施加電壓,閥體會發出很大的卡阻塔聲。如果動作時間太短或不動作,則閥體限位機構或閥針可能卡住,請執行以下操作:
After confirming that the resistance and connector of the coil part are normal, turn on the power supply of the unit for operation, hold the valve body with your hand, and feel whether the valve body acts. The time from fully open to fully closed valve body is about 6 seconds. When the valve body is in the fully open or fully closed position, if the voltage is continuously applied, the valve body will emit a great jamming tower sound. If the action time is too short or does not act, the valve body limiting mechanism or valve needle may be stuck. Please perform the following operations:
 
    1 拆下線圈,檢查閥體不銹鋼外殼是否有碰撞痕跡。如果是,更換閥體。
1 remove the coil and check whether there are collision marks on the stainless steel shell of the valve body. If so, replace the valve body.
 
    2 如果閥體不動作,輕輕敲擊閥體的閥體部分。如果沒有,轉到下一步。
2 if the valve body does not move, gently tap the valve body part of the valve body. If not, go to the next step.
 
    3 反復打開和關閉機器。如果是冷暖設備,重復制冷/制熱轉換三次。如果通電后閥體動作,說明系統中有雜質卡住。如果仍然不起作用,則拆下電子節氣門部件。
3 turn the machine on and off repeatedly. In case of heating and cooling equipment, repeat the cooling / heating conversion three times. If the valve body moves after power on, it indicates that impurities are stuck in the system. If it still does not work, remove the electronic throttle component.
 
    4 將拆下的電子節流元件分別用干凈的氮氣正反方向吹掃,然后向單體發出脈沖信號,觀察閥體是否動作。如果沒有行動,返回工廠進行進一步分析。
4. Purge the removed electronic throttle elements with clean nitrogen in the positive and negative directions, and then send pulse signals to the monomer to observe whether the valve body acts. If there is no action, return to the factory for further analysis.
 
    5 經過上述步驟,單體可以重新安裝并正常使用。安裝前,必須對制冷系統進行清洗,防止雜質再次粘附。
After the above steps, the monomer can be re installed and used normally. Before installation, the refrigeration system must be cleaned to prevent impurities from adhering again.
 
 
 
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