【Q&A Question 217】2017.08.05
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This post was last edited by liuquan1100 on 2017-8-6 08:16. [Q&A Question 217] On 2017.08.05, describe the steps for replacing the filter in the compressor light oil station The reference answers will be visible after responding; scoring is awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) (1) When the differential pressure of the lubricating oil filter exceeds the specified value, the filter element should be switched out and cleaned promptly. ⑵First, open the vent valve of the backup filter, then open the connection valve between the two filters or slightly turn the switch handle of the filter to fill it with oil. ⑶ When oil is discharged from the vent valve, it indicates that the interior is filled with oil; close the vent valve. ⑷Rotate the switch handle to the correct position; once the switching is complete, deactivate the filter to proceed with disassembly and cleaning. Scoring criteria: 2 Wealth points for incorrect attempts; 3–8 points for *incomplete* answers. 10 Wealth points for correct answers, provided with detailed explanations; 15–20 Wealth points for correct answers with additional *insufficient* details. Please score according to these criteria. Note: If there are editing records after answering, only those who participated will be credited points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters unrelated to the answer are all considered malicious spamming; points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Zone – “Creative Ideas for Energy Savings” campaign (the second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html (Source: Haichuan Chemical Industry Forum Website)
1. When the differential pressure of the lubricating oil filter reaches 0.15 MPa, an alarm is issued in the control room, and the filter is switched on-site. 2. Check whether the stop valve on the bypass pipeline between the two filters is already open; if not, slowly open it fully ； 3. Open the stop valve on the exhaust pipeline of the spare filter; when oil is seen flowing into the fuel tank through the oil return sight glass on that pipeline, it indicates that the spare filter is filled with oil, at which point the stop valve on the bypass pipeline should be closed. 4. Rotate the control lever of the dual-port three-way valve to switch the filter whose filter element needs to be replaced to spare mode. 5. Open the exhaust valve of the disabled filter to release pressure ； 6. After confirming that the pressure in the filter has been released following the switch, ensure that no oil flows out of the exhaust pipe; then open the drain to remove all the oil, and proceed with replacing the filter element ； 7. After cleaning or maintenance, the discharge valve of the filter should be closed. The stop valve on the bypass line should be opened to check for leaks; if any leaks are found, the pressure should be relieved promptly. If no leaks are detected, then the stop valve on the exhaust line should be opened to allow oil to fill the filter and flow through it, at which point the filter enters standby mode.
1) Inspect the spare filter before cutting. 2) Close the drain valve and open the vent valve. 3) Slowly open the oil filling connection valve and fill the spare filter with oil at a low flow rate, paying attention to the sight glass of the vent valve. 4) When oil can be seen flowing through the sight glass, close the vent valve and the oil filling connection valve. 5) Slowly turn the switching handle to the spare filter, paying attention to changes in oil pressure and ensuring that the valve is in place. 6) Slowly drain the oil from the filter that is no longer in use and monitor the oil pressure before proceeding with maintenance. Pay special attention to changes in oil pressure during switching; the switch valve must be moved into position.
1. Before making the switch, inspect the spare filter, close the drain valve, open the vent valve, and slowly open the oil filling connection valve to fill the spare filter with oil at a low flow rate. Pay close attention to the sight glass of the exhaust valve. When there is flow passing through the sight glass, close the vent valve and the oil filling connection valve, and slowly turn the switch handle to the spare filter, paying attention to changes in oil pressure and the proper positioning of the valves. 2. Oil filling pipeline 3. Low pressure at the main oil pump outlet
1. Inspect the spare filter before cutting off supply. 2. Close the drain valve and open the vent valve. 3. Slowly open the oil filling connection valve and fill the spare filter with oil at a low flow rate, paying attention to the sight glass of the vent valve. 4. When oil can be seen flowing through the sight glass, close the vent valve and the oil filling connection valve. 5. Slowly turn the switching handle to the spare filter, paying attention to changes in oil pressure and ensuring that the valve is in place. 6. Slowly drain the oil from the filter that is no longer in use and monitor the oil pressure before proceeding with maintenance. Pay special attention to changes in oil pressure during switching; the switch valve must be moved into position.
This post was last edited by chuanhengmpq on 2017-8-5 08:45. Before making the switch, check the spare filter, close the drain valve, open the vent valve, and slowly open the oil filling connection valve to fill the spare filter with oil at a low flow rate; pay close attention to the sight glass of the exhaust valve. When there is flow passing through the sight glass, close the vent valve and the oil filling connection valve, and slowly turn the switch handle to the spare filter, paying attention to changes in oil pressure and the proper positioning of the valve stem.
⑴ When the differential pressure of the lubricating oil filter exceeds the specified value, the filter element should be switched out and cleaned promptly. ⑵First, open the vent valve of the backup filter, then open the connection valve between the two filters or slightly turn the switch handle of the filter to fill it with oil. ⑶ When oil is discharged from the vent valve, it indicates that the interior is filled with oil; close the vent valve. ⑷Rotate the switch handle to the correct position; once the switching is complete, deactivate the filter to proceed with disassembly and cleaning.
1) Inspect the spare filter before cutting. 2) Close the drain valve and open the vent valve. 3) Slowly open the oil filling connection valve and fill the spare filter with oil at a low flow rate, paying attention to the sight glass of the vent valve. 4) When oil can be seen flowing through the sight glass, close the vent valve and the oil filling connection valve. 5) Slowly turn the switching handle to the spare filter, paying attention to changes in oil pressure and ensuring that the valve is in place. 6) Slowly drain the oil from the filter that is no longer in use and monitor the oil pressure before proceeding with maintenance. Pay special attention to changes in oil pressure during switching; the switch valve must be moved into position.
⑴ When the differential pressure of the lubricating oil filter exceeds the specified value, the filter element should be switched out and cleaned promptly. ⑵First, open the vent valve of the backup filter, then open the connection valve between the two filters or slightly turn the switch handle of the filter to fill it with oil. ⑶ When oil is discharged from the vent valve, it indicates that the interior is filled with oil; close the vent valve. ⑷Rotate the switch handle to the correct position; once the switching is complete, deactivate the filter to proceed with disassembly and cleaning.
1) Inspect the spare filter before cutting. 2) Close the drain valve and open the vent valve. 3) Slowly open the oil filling connection valve and fill the spare filter with oil at a low flow rate, paying attention to the sight glass of the vent valve. 4) When oil can be seen flowing through the sight glass, close the vent valve and the oil filling connection valve. 5) Slowly turn the switching handle to the spare filter, paying attention to changes in oil pressure and ensuring that the valve is in place. 6) Slowly drain the oil from the filter that is no longer in use and monitor the oil pressure before proceeding with maintenance. Pay special attention to changes in oil pressure during switching; the switch valve must be moved into position.
⑴ When the differential pressure of the lubricating oil filter exceeds the specified value, the filter element should be switched out and cleaned promptly. ⑵First, open the vent valve of the backup filter, then open the connection valve between the two filters or slightly turn the switch handle of the filter to fill it with oil. ⑶ When oil is discharged from the vent valve, it indicates that the interior is filled with oil; close the vent valve. ⑷Rotate the switch handle to the correct position; once the switching is complete, deactivate the filter to proceed with disassembly and cleaning.