It includes a valve with a remote flow controller that compares the seal gas flow. Operators require high and consistent reliability for these assets. We design and build our products to the highest standards to ensure your total satisfaction. Stainless steel components like enclosure panels, oil system, process piping. Inboard of the dry gas seal is an inner labyrinth seal, which separates the process gas from the gas seal. Wet oil seal compressor degassing systems may be configured in a variety of. Oil free compressor air compressors air compressors. The number of shuttleless looms in china will be doubled to 200,000 before 2005.
The design of a family of screw compressors for oil. Feeding refrigerant to this port from a superfeedeconomiser vessel within the refrigeration system offers. Centrifugal compressors monitor and reliability program centrifugal compressor trains include the compressor, driver and the auxiliary systems such as lube oil, gas seals, gearbox, etc. An oil seal 50 is fitted to the inside of the seal to act as an oil retainer. Aug 02, 2017 a dry gas seal control system must have an adequate range and controllability to maintain a minimum 16 fps 4. Applying new technology to meet the demand of diversification and advancement oilfree compressor. The flow diagram, figure 4, illustrates the air oil separation process and the oil circulation process in an air or water cooled system of a typical oil flooded rotary screw air compressor. Each compressor is provided with an oil cooler, inter cooler and after cooler, which can be of an air or water cooled type.
The application of dry gas seal system is recommended. Integrally geared centrifugal compressors represent the latest. In an oil flooded rotaryscrew compressor, lubricating oil bridges the space between the rotors, providing a hydraulic seal and transferring mechanical energy between the driving and driven rotor. The position is defined on the rotor helicoid with the injection hole located so that the oil enters tangentially in line with the gate rotor tip in order to recover as much. Do not fill above the upper line and do not operate compressor. In oil flooded compressors, the remaining oil is removed in a downstream separator, and only residual oil amounts of typically five parts per million ppm continue to remain in the gas stream.
Boge oilfree screw compressors have long since proved their importance to. Refineries, petrochemical processing, chemical processing, food and beverage, mining, environmental and the biosciences markets canread more compressor seals. The mechanical face seal uses a liquid, such as oil, to lubricate, cool, and create a positive sealing action to the sealing components during normal operation. A compressor seal upgrade by elliott group increases seal reliability and reduces process gas leakage to improve overall efficiency. The software optimizes pdf structures and compresses pictures, graphics and objects within a pdf file while preserving the original file format and quality. Analysis of oil pumping in a reciprocating compressor. Tests and analysis of condensation of oil in the discharge air of hitachi oilfree screw compressor dsp are implemented by a third party tuv, based on the iso85731 standard.
A globe or gate valve installed in the discharge line will allow compressor isolation from plant air system for compressor. Atlas copco is renowned for designing and manufacturing some of the most durable oilfree screw compressors. The control system regulates the opening and closing of the inlet valve in. Manual or customerspecified systems can be engineered for most gas seal types. Spills may be taken up with pump or vacuum andfinished off with dry chemical absorbent, may even require excavation of contaminated soil.
Ideal for industries where highquality oilfree air is key, the zrzt offers the highest reliability and safety in combination with low energy costs. Below are some features of the oilflooded screw compressor. In an oilflooded rotaryscrew compressor, lubricating oil bridges the space between the rotors, providing a hydraulic seal and transferring mechanical energy between the driving and driven rotor. File is uploaded via encrypted ssl network and your files will be erased permanently from the server after 30 mins. According to the system way lubricants are designated by the letters iso followed by a number equal to the oil viscosity measured in centistokes at 40c 104f. It depends on the type of compressor, if it is a centrifugal compressor or dry type twin screw compressor then the oil usage will be limited to 1 bearing cooling, 2 actuating sliding valves etc. Change oil after the first 8 hours of compressor operation, then change oil after every 300 working hours or 3 months whichever comes first. Centrifugal compressor wet seals seal oil degassing and control. Luowei oilfree compressor operation manual pdf download. Oil free air compressors are the only option for some industries, including operating breweries, dental offices, pharmaceutical companies, and many more. Oilfree compressed air technology air compressor eng. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray.
Verydoc pdf compressor command line can be used to compress adobe acrobat pdf files, it can reduce pdf file size up to 4095% using verypdfs format optimization technology for pdf file compression. Do not exceed ac system refrigerant oil capacity, when servicing system. Aug 02, 2017 dry gas seals are an integral part of modern centrifugal compressors. Seal oil flow is established and fills the elevated seal oil tank, tank level is controlled by flow across seals and the seal oil tank level controller reference gas is established and equalizes the gas pressure between the seal cavity and the seal tank vapor space seal oil from the elevated seal tank creates a differential pressure of 67 psig. Pressure at the oil header creates starts the drive. Bps initial results showed recovery of 99% of seal oil gas that would be otherwise vented to. Separated oil is then circulated in the lube oil system of the compressor. International standardization organization iso established a viscosity grading vg system for lubricants. Discharge sour seal oil trap was empty and level control valve was open. Dry gas seal systems for centrifugal compressors page 4. In an oilfree compressor the problem of oil is eliminated.
In case of the existing compressor equips oil film seal, seal oil console shall be replaced with dry gas seal control system. They are critical assets for many production facilities. When your process is exposed to oil, it becomes increasingly difficult to keep air clean, increasing the costs youll face especially as you use more and more air. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. A byproduct of the air compression process is oil and water. The lube oil system consists of compressor lube lines, oil cooler, oil filters, and oil pump.
Ideal for industries where highquality oil free air is key, the zrzt offers the highest reliability and safety in combination with low energy costs. Compressor oils compressor oils are fluids used for lubrication of moving metal parts of gas air compressors. Chemically active gases oxygen, hydrogen chloride are not compressed in compressors. Dry gas seal systems for centrifugal compressors page 4 of. Development of high specific speed mixed flow compressors pdf.
Some of the industrys toughest sealing challenges come from compressors. Centrifugal compressor wet seals high pressure seal oil circulates between rings around the compressor shaft oil absorbs the gas on the inboard side little gas leaks through the oil seal seal oil degassing typically vents methane to the atmosphere seal oil degassing may vent 40 to 200 scfminute. Safe pdf compressing service your privacy is guaranteed since no one gets access to your files during the whole pdf compressing progress. Oil free screw compressor is the best choice to be the complete set for the textile sector. Elimination of the wet seal system improves operational safety by eradicating any dangerous build up of hydrocarbon gas in the seal oil. Air oil separators used in rotary compressors apparent failures often one hears the separator has failed, there is oil carry over from the compressor. The design of a family of screw compressors for oilflooded. Features of the oilflooded screw compressor turbomachinery. Almost all compressor parts within this capacity range are interchangeable, facilitating the user to store a variety of parts, for compressor of many different sizes. When your process is exposed to oil, it becomes increasingly difficult to keep air clean, increasing the costs youll face especially as you use more and more.
An air receiver allows the initial cooling of compressed air as it exits the compressor. The gas in the oil is released in the drainer and the process gas is drawn off the drainer through the critical orifice and returns to the compressor suction after passing through a demister coalescing filter the degassed seal oil in the drainer then returns to the main oil sump in the compressor base. Wet seal degassing recovery system for centrifugal compressors 2014 2 one partner has reduced methane emissions from centrifugal compressor seal oil degassing by separating gas from seal oil in a small separatordisengagement vessel and routing it back into the compressor suction, to high pressure turbine fuel gas, or to low pressure fuel. Ingersoll rand is the technology leader in oilfree compressed air not only because we develop classleading products, but also. The use of dry gas seals requires a system designed to supply sealing gas to the seal as a sealing and working fluid for the running gap. A flowcontrol system controls the supply of seal gas to the seals by regulating the seal gas flow through an orifice upstream of each seal. After leaving the compressor discharge flange, gas and oil exit through a check valve to the oil reservoir where most of the oil is separated from the gas.
Get free 2day shipping on qualified oil free compressor, air compressors products or buy tools department products today with buy online pick up in store. Illuminated when the compressor shuts down due to high air discharge temperature from the 2nd stage 440f. Centrifugal compressor wet seals seal oil degassing and. C101 seal oil system with both seal oil drainer outlets closed, the sight glasses on both drainers area observed for a level rise. Oilfree screw compressor is the best choice to be the complete set for the textile sector. The zrzt highend rotary screw compressor comes out of this strong tradition. This will help hycomp identify your compressor and any special parts and materials that may have been used. Compress pdf files with pdf compressor, verydoc pdf. I am just starting on a new instrumentation project that involves compressor oilseal system. Air treatment is the next concern in designing a compressed air system. A differential pressure is supplied at 35 to 50 psi above.
Optimal seal performance depends upon proper selection for the process application. Below are some features of the oil flooded screw compressor. Fill in the information from the new compressor into the spaces provided in the sample nameplate below. Oman oil company lube oil heaters for gas compressor packages ruwais carbon black plant and coker unit uae samsung engineering abu dhabi oil refining company iecex lube oil and water applications for use within reciprocating compressor packages baiji power plant iraq orascom construction iraq ministry of electricity. Because the frictional portion of the seal is subject to wear due to the rapid rotation of the shaft, a collar 109 is provided for the friction portion on models 200250 so that the friction portion can be replaced. Wet seal degassing recovery system for centrifugal compressors. Oilfree screw compressor or oilinjected screw compressor. Process gas centrifugal compressors ingersoll rand. The oil pump may be double or single configuration. For compressor applications, see compressor applications table below. Wet seal degassing recovery system for centrifugal. The duration of operation of the lube oil pump is dictated by api 521 as. Dry gas seal systems for centrifugal compressors august 2, 2017 july 1, 2019 ct2 staff centrifugal compressor, dry gas.
Ingersoll rand is the technology leader in oilfree compressed air not only because we develop classleading products, but also because we know our customers industries, understand the. A compressor seal upgrade by elliott group increases seal reliability and reduces process gas leakage to. If more than one compressor pumps into a common system, a check valve in the discharge line of each compressor is recommended to prevent moisture from entering the cylinder head when one compressor is idle. Servopress oils are excellent cylinder lubricants for high. In fact, compressor oil seals are not gas seals at all, but rather liquid seals designed to minimize the amount of seal oil that passes into the compressor. With an experience gathered from carrying out over 450 pipeline projects and having laid about 70,000 kilometers, we are leaders in designing and building oil and gas transportation systems in the most remote locations around. A compressor is a mechanical device that increases the pressure of a gas by reducing its. Centrifugal compressors monitor and reliability program. A positive displacement compressor is the system which compresses the air. Compressor drive by lv, mv or hv electric motor, diesel engine or turbine. Aug 30, 2017 in a dryrunning rotaryscrew compressor, timing gears ensure that the male and female rotors maintain alignment. Oilfree air compressors are the only option for some industries, including operating breweries, dental offices, pharmaceutical companies, and many more. The seal oil is normally supplied from a combined lube and seal oil system, an example of one such system is shown in. Dry gas seals do not require a seal oil system, eliminating both the adverse environmental impact of contaminated oil and the maintenance costs associated with oil seals.
The testing established that the discharge air of hitachi dsp is certied as the highest level of quality air class 0zero. The clean up of compressed air begins with cooling. If the compressor is a single operating unit with no standby, it is advisable to start the lube oil pump first before beginning blow down of the compressor loop. Generic lube oil system diagram for a centrifugal compressor. Find the right oil free compressor ordered from small to big maximum working pressure. These oils meet the requirement of din 51506 vdl group and iso dls6521 specifications for air compressor oil. Material safety data sheet royal air compressor oil royal manufacturing company, lp, p.
Pdf compressor will compress black and white images by 510x compared to tiff g4 and color images by 10100x compared to jpeg smaller. In a dryrunning rotaryscrew compressor, timing gears ensure that the male and female rotors maintain alignment. Page 1 operation manual oilfree compressor caution. Oil is injected into the compressor chamber at the place where thermodynamic calculations show the air and oil inlet temperature to coincide. The programmable logic controller plc starts the auxiliary ac powerdriven lubricating oil pump. Suction sour seal oil trap was full and level control valve was hunting closeopen. Iso 22000 certification for the oil free production facility in antwerp which applies to all our z range oil free air compressors.
Natural gas compressor lubrication guidelines mobil industrial. The use of a sealing compound or teflon tape to avoid leakage. What i cant seem to determine is what the operating pressure of the system should be. Optimal seal performance depends upon proper selection for the process application, operating conditions, process gas composition, and design specifications. Remove the oil drain plug and allow oil to drain out. Assuming there is psi on the gas side, a dp of 45 psi, then the seal oil system would operate at 1045psi, for example. The oil pumps are connected to the same shaft that drives the compressor and. Dry gas seals are an integral part of modern centrifugal compressors. An operator should make routine visual checks for any. Oilfree air compressors specifically developed for your applications where air quality is essential for your endproduct and production processes. The following factors are taken into account in selection of a compressor oil.
The howden superfeed system is a development of the oil injected screw compressor design. Mar 01, 2008 after leaving the compressor discharge flange, gas and oil exit through a check valve to the oil reservoir where most of the oil is separated from the gas. In oilflooded compressors, the remaining oil is removed in a downstream separator, and only residual oil amounts of typically five parts per million ppm continue to remain in the gas stream. Large spills should be diked for later recovery or disposal. Dec 08, 2016 centrifugal compressors have lubrication systems designed as per api 614 consisting of an oil reservoir, pumps, filter, cooler and oil lines. Seal oil was losing at rate of about 1 drum per hour. Low compressor oil pressure illuminated when the compressor shuts down due to oil pressure loss less.
Outboard of the dry gas seal is a barrier seal, which separates the gas seal from the compressor shaft bearings fig. The lubricant pressures and flows may vary from compressor to compressor depending upon the speed and size. For a more complete description of dry gas seal principles of operation, see shah 1988. The lubricant pressures and flows may vary from compressor to compressor depending upon the speed and. All oil injected compressors are equipped with an additional gas port, located along the length of the compression chamber.
Some compressors use differential air pressure, instead of a pump, to circulate the oil. Oilfreescrewcompressor for a wide range of tasks conveying all kinds of bulk material and many more there are hardly any limits to the possible applications for aerzen screw compressors. The compressor seal oil system is designed and furnished with instrumentation similar to the lube oil system shown in figure 154. Specifying engineers sometimes do not give enough attention to the scope, definition and selection of the most appropriate gas seal type, its control system and auxiliaries for a given service application. The seal oil is normally supplied from a combined lube and seal oil system, an example of one such system is shown in figure 1. I am just starting on a new instrumentation project that involves compressor oil seal system.
Bges mrl compressor cone seal system principle of seal operation tapered cone seal sleeves are fitted to the compressor shaft, rotate at 11,200. The only essential difference is how the endsupply control is handled. If the header pressure is low, the standby oil pump starts and maintains oil pressure during operation. Seal oil delta pressure seal oilreference gas control system was unstable fluctuating. Atlas copco is renowned for designing and manufacturing some of the most durable oil free screw compressors. These gas seal systems are normally supplied by the compressor oem mounted adjacent to the compressor.
26 202 844 491 334 571 1282 929 1441 623 1076 738 1513 354 1517 372 126 1512 902 1073 1276 1075 1181 848 984 899 1087 246 565 166 1012 1133 1155 153 224