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Operation and maintenance of air compressor with gas seal

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[Abstract]:
This article is an overview of the gas closed air compressor operation and maintenance, divided into two sections to detail, gas closed air compressor operation and gas closed air compressor operation process......
This article is an overview of the gas closed air compressor operation and maintenance, divided into two sections to detail, gas closed air compressor operation and gas closed air compressor operation process maintenance.Operation process of gas seal air compressor: (1) preparation before putting into use, dry gas seal system pipe purge clean, without any impurities.(2) when the filter system is put into use, gas two will be isolated
 
This article is an overview of the gas closed air compressor operation and maintenance, divided into two sections to detail, gas closed air compressor operation and gas closed air compressor operation process maintenance.
 
Operation process of gas-enclosed air compressor:
 
(1) before putting into use, the dry gas seal system pipe is purged clean without any impurities.
 
(2) put into use the filtration system, put into use one set of isolated gas two-stage sealed gas filter and the first-stage filter, open the inlet and outlet valve, and put the other set into use.
 
(3) confirm the opening of the isolation valve before and after the cut off valve, the two-stage sealing regulating valve before and after the cut off valve, the one-stage sealing regulating valve before and after the cut off valve, the two-axle end air supply valve and the instrument and the valve.
 
(4) adjust the pressure of each sealing gas and the isolation gas 0.03mpa, the secondary sealing gas 0.15m Pa, the primary sealing gas, and the pressure difference control 0.04mpa.
 
(5) insert sealing gas, open the isolated gas and two-stage seal N 2 supply valve, first establish the isolated gas seal, after the pressure of the isolated gas is normal at all points, then start the lubricating oil pump, open the first-stage seal N 2 air supply valve, the pressure of the first-stage seal is normal at all points, open the two-stage seal two-axis supply valve, and the pressure of the second-stage seal is 0. 15MPa.
 
(6) if the inlet pressure of process gas is higher than that of N 2, the primary seal gas shall be changed to process gas seal, and N 2 and process gas shall be separated from the check valve for standby.
 
(7) the isolated gas has been using N 2. Before the isolated gas is put into use, the oil system circulation cannot be established, and only 10m in is put into use in the isolated gas.
 
Operation and maintenance of gas-enclosed air compressor:
 
(1) the centrifugal compressor dry gas seal operation to keep N 2, process gas clean, stable pressure control, temperature control in 20 50!.
 
(2) during the operation of dry gas seal, it is necessary to check, clean and replace the filter element regularly to ensure the gas quality.
 
(3) during the operation of dry gas seal, the first, second and isolated gas seal must ensure the normal flow and pressure of the seal gas.
 
(4) the exhaust pressure and flow rate of dry gas seal are higher than the set pressure and flow rate shall be immediately processed.
 
(5) after the shutdown of the centrifugal compressor, the primary seal gas must be switched from process gas to N2 seal.
 
(6) during the shutdown of the centrifuge, if the pressure of the system increases, the compressor will open the low-pressure cylinder and high-pressure cylinder for emptying to ensure the flow of dry gas seal.
 
(7) prevent oil seal from leaking oil and polluting the machine seal.
 
(8) clean the sealing chamber regularly to prevent residual impurities.
 
(9) dry gas seal operation, record every hour, abnormal operation immediately report immediately deal with.
 
(10) the design service life of dry gas seal sealing elements is generally 60 months, and the rubber ring, spring and rotor ring shall be replaced after the expiration.In my opinion, in view of the long period of operation of the compressor and the characteristics of a single machine without a spare car, the continuous operation of two years should be replaced or checked at an appropriate opportunity.
 
(11) in order to protect the dry gas sealing elements, the pressure lifting speed of the unit is generally controlled within 2. 0MPa/m in.
 
When N2 power supply suddenly stops under the running state of the centrifugal compressor, it should be noted that :(1) the operator must immediately stop the centrifugal compressor according to the operating rules.

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