【Mechanical Equipment Technology Edition】Daily Question 20171211: Refrigeration Equipment (Oil Collector)
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This post was last edited by YORK Industrial Refrigeration on 2017-12-14 at 15:10. Starting from now, in order to enhance communication among users, a \"Question of the Day\" campaign has been launched on the Mechanical Equipment Technology forum. We hope everyone will participate actively to progress and improve together! ! ! Rewards: 3 wealth points for active participation, 10-15 wealth points for correct answers. This question is valid for two days; no scoring will be given after that period. Last time we talked about the oil collector, and only one member answered it correctly! This time, let’s talk about his functions and workflow. Answer: A device used to store the lubricating oil separated from oil separators, condensers, reservoirs, intercoolers, evaporators, etc., and to remove this oil from the system in accordance with specified procedures. The specific procedure is as follows: The low-pressure steam coming out of the air separator is drawn in by the low-pressure refrigerant compressor and compressed to an intermediate pressure. The compressed superheated steam then enters the intermediate cooler, where it is cooled to a saturated state by the liquid refrigerant coming from the expansion valve, before being compressed further by the high-pressure refrigerant compressor. The ammonia gas coming out of the high-pressure compressor passes through an oil separator to separate the ammonia gas from the oil. The oil then enters the oil collection tank. Ammonia gas enters the condensers. Pressure equalizing pipes are installed in both condensers as well as in the high-pressure liquid storage tank, to maintain pressure balance between these devices; the liquid from the condensers is then directed into the storage tank by means of the difference in liquid levels. The vent pipe and the drain pipe are connected to the air separator and the oil collector, respectively. A portion is compressed by a low-pressure compressor. A portion enters the liquid return device, and through the hot ammonia defrosting air supply pipe in that device, it enters the condenser to form a cycle. The high-pressure ammonia liquid exiting the condenser is forced into the high-pressure storage tank by means of the pressure difference; this tank is equipped with a pressure gauge, safety valve, ammonia release outlet, and other components. The mixed gas coming from the condenser enters the air separator; the ammonia liquid that emerges from the intercooler passes through a throttle valve before entering the air separator. The separated ammonia gas enters the low-pressure compressor through the low-pressure receiver circulation tank. The low-pressure liquid storage circulation tank is equipped with an exhaust pipe, a liquid outlet pipe (which is connected to the oil collection tank), a safety valve, and a pressure gauge. A portion of it enters the ammonia pump through the return pipe, while the ammonia liquid coming out of the intermediate cooler passes through a filter and enters the low-pressure liquid storage tank. The ammonia liquid in this tank then enters the separator via the hot ammonia defrost return pipe. The liquid discharged from the low-pressure liquid storage circulator passes through a filter before entering the ammonia pump, and finally reaches the liquid separator. https://attach01.hcbbs.com/forum/201712/09/110842irt8q3yq8l4tttto.jpg ================================ Premium promotions: Mechanical equipment——Maintenance procedures for York screw compressors https://bbs.hcbbs.com/thread-1806833-1-1.html Mechanical equipment——Upgrading of York Quinton control centers https://bbs.hcbbs.com/thread-1804837-1-1.html Mechanical equipment——Major repairs of GEA Grasox screw compressors https://bbs.hcbbs.com/thread-1800467-1-1.html Mechanical equipment——Disassembly and maintenance of British HOWDEN screw compressors https://bbs.hcbbs.com/thread-1832529-1-1.html Mechanical equipment——Disassembly and maintenance of Japanese Maekawa MYCOM screw compressors https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=
The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters; these heaters enable the refrigerant dissolved in the oil to vaporize and return to the refrigeration system through balance tubes. At the same time, they raise the temperature of the oil, reducing its viscosity and thus facilitating the release of lubricating oil from the oil collector. By utilizing the principle of gravity separation and the law of conservation of momentum, the main unit floats on the water surface. Once it is turned on, the layer of floating oil is drawn into the separation cylinder, where oil is continuously collected at the top of the cylinder, while the water contained in the floating oil is discharged from the bottom of the cylinder. When the oil accumulation reaches a specified thickness, the oil pump automatically pumps the oil out.
An oil collector is a container that gathers the oil in the system (also known as an oil drain). It is commonly used in refrigeration ammonia systems. The oil collector is equipped with an exhaust valve, an oil inlet valve, an oil drain valve, etc., as well as a pressure gauge and a level gauge. Before draining the oil, in order to accelerate the evaporation of ammonia in the oil and improve the recovery of the refrigerant, it is common to use water to spray from the top of the oil collector to speed up heat dissipation. The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters or steam coils; these heating devices enable the refrigerant dissolved in the oil to evaporate more quickly, allowing it to return to the refrigeration system through the return pipes. The oil, on the other hand, accumulates at the bottom of the container and is removed through an oil drain pipe for recycling, thereby helping to save fuel consumption.
An oil collector is a container used to collect lubricating oil, commonly employed in refrigeration ammonia systems. In refrigeration ammonia systems, a small amount of refrigeration oil is carried from the oil system of the refrigeration compressor into the refrigeration pipes and heat exchange equipment by the high-speed refrigerant. Debris such as oil films adhering to the heat exchange tubes reduces the efficiency of heat exchange in these devices. Excessive loss of lubricating oil in the oil system can also affect the proper operation of the compressor. Thus, the lubricant that leaks out either returns automatically to the refrigeration compressor oil system through oil return components such as venturi tubes, or it is collected together in an oil collector. The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters; these heaters enable the refrigerant dissolved in the oil to vaporize and return to the refrigeration system through balance tubes. At the same time, they raise the temperature of the oil, reducing its viscosity and thus facilitating the release of lubricating oil from the oil collector.
The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters; these heaters enable the refrigerant dissolved in the oil to vaporize and return to the refrigeration system through balance tubes. At the same time, they raise the temperature of the oil, reducing its viscosity and thus facilitating the release of lubricating oil from the oil collector. By utilizing the principle of gravity separation and the law of conservation of momentum, the main unit floats on the water surface. Once it is turned on, the layer of floating oil is drawn into the separation cylinder, where oil is continuously collected at the top of the cylinder, while the water contained in the floating oil is discharged from the bottom of the cylinder. When the oil accumulation reaches a specified thickness, the oil pump automatically pumps the oil out.
A device used to store the lubricating oil separated from oil separators, condensers, reservoirs, intercoolers, evaporators, etc., and to remove this oil from the system in accordance with specified procedures. The specific procedure is as follows: The low-pressure steam coming out of the air separator is drawn in by the low-pressure refrigerant compressor and compressed to an intermediate pressure. The compressed superheated steam then enters the intermediate cooler, where it is cooled to a saturated state by the liquid refrigerant coming from the expansion valve, before being compressed further by the high-pressure refrigerant compressor. The ammonia gas coming out of the high-pressure compressor passes through an oil separator to separate the ammonia gas from the oil. The oil then enters the oil collection tank. Ammonia gas enters the condensers. Pressure equalizing pipes are installed in both condensers as well as in the high-pressure liquid storage tank, to maintain pressure balance between these devices; the liquid from the condensers is then directed into the storage tank by means of the difference in liquid levels. The vent pipe and the drain pipe are connected to the air separator and the oil collector, respectively. A portion is compressed by a low-pressure compressor. A portion enters the liquid return device, and through the hot ammonia defrosting air supply pipe in that device, it enters the condenser to form a cycle. The high-pressure ammonia liquid exiting the condenser is forced into the high-pressure storage tank by means of the pressure difference; this tank is equipped with a pressure gauge, safety valve, ammonia release outlet, and other components. The mixed gas coming from the condenser enters the air separator; the ammonia liquid that emerges from the intercooler passes through a throttle valve before entering the air separator. The separated ammonia gas enters the low-pressure compressor through the low-pressure receiver circulation tank. The low-pressure liquid storage circulation tank is equipped with an exhaust pipe, a liquid outlet pipe (which is connected to the oil collection tank), a safety valve, and a pressure gauge. A portion of it enters the ammonia pump through the return pipe, while the ammonia liquid coming out of the intermediate cooler passes through a filter and enters the low-pressure liquid storage tank. The ammonia liquid in this tank then enters the separator via the hot ammonia defrost return pipe. The liquid discharged from the low-pressure liquid storage circulator passes through a filter before entering the ammonia pump, and finally enters the liquid separator
An oil collector is a container used to collect lubricating oil, commonly employed in refrigeration ammonia systems.
The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters; these heaters enable the refrigerant dissolved in the oil to vaporize and return to the refrigeration system through balance tubes. At the same time, they raise the temperature of the oil, reducing its viscosity and thus facilitating the release of lubricating oil from the oil collector. By utilizing the principle of gravity separation and the law of conservation of momentum, the main unit floats on the water surface. Once it is turned on, the layer of floating oil is drawn into the separation cylinder, where oil is continuously collected at the top of the cylinder, while the water contained in the floating oil is discharged from the bottom of the cylinder. When the oil accumulation reaches a specified thickness, the oil pump automatically pumps the oil out. This device features advanced technology, automatic control, and stable performance. Not affected by displacement, nor restricted by oil level differences, oil viscosity, or impurities. It requires no special installation conditions or auxiliary facilities, and is easy to maintain.
The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters; these heaters enable the refrigerant dissolved in the oil to vaporize and return to the refrigeration system through balance tubes. At the same time, they raise the temperature of the oil, reducing its viscosity and thus facilitating the release of lubricating oil from the oil collector. By utilizing the principle of gravity separation and the law of conservation of momentum, the main unit floats on the water surface. Once it is turned on, the layer of floating oil is drawn into the separation cylinder, where oil is continuously collected at the top of the cylinder, while the water contained in the floating oil is discharged from the bottom of the cylinder. When the oil accumulation reaches a specified thickness, the oil pump automatically pumps the oil out.
An oil collector is a container used to collect lubricating oil, commonly employed in refrigeration ammonia systems. In refrigeration ammonia systems, a small amount of refrigeration oil is carried from the oil system of the refrigeration compressor into the refrigeration pipes and heat exchange equipment by the high-speed refrigerant. Debris such as oil films adhering to the heat exchange tubes reduces the efficiency of heat exchange in these devices. Excessive loss of lubricating oil in the oil system can also affect the proper operation of the compressor. Thus, the lubricant that leaks out either returns automatically to the refrigeration compressor oil system through oil return components such as venturi tubes, or it is collected together in an oil collector. The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters; these heaters enable the refrigerant dissolved in the oil to vaporize and return to the refrigeration system through balance tubes. At the same time, they raise the temperature of the oil, reducing its viscosity and thus facilitating the release of lubricating oil from the oil collector.
An oil collector is a container used to collect lubricating oil, commonly employed in refrigeration ammonia systems. In refrigeration ammonia systems, a small amount of refrigeration oil is carried from the oil system of the refrigeration compressor into the refrigeration pipes and heat exchange equipment by the high-speed refrigerant. Debris such as oil films adhering to the heat exchange tubes reduces the efficiency of heat exchange in these devices. Excessive loss of lubricating oil in the oil system can also affect the proper operation of the compressor. Thus, the lubricant that leaks out either returns automatically to the refrigeration compressor oil system through oil return components such as venturi tubes, or it is collected together in an oil collector. The oil collector is connected to various heat exchange devices in the refrigeration system through pipes; it mainly consists of oil collection pipes and balance pipes. The lubricating oil from the heat exchangers flows into the oil collector due to gravity. Some oil collectors are equipped with electric heaters; these heaters enable the refrigerant dissolved in the oil to vaporize and return to the refrigeration system through balance tubes. At the same time, they raise the temperature of the oil, reducing its viscosity and thus facilitating the release of lubricating oil from the oil collector.