Nitrogen compressor main oil pump venting gas appliance
Technical field
The utility model belongs to the pipe technology field, relates in particular to a kind of pipeline of making the used nitrogen compressor main oil pump of oxygen and connects venting gas appliance.
Background technique
Oxygen installation's used nitrogen compressor of system oxygen is generally taked the lubricating system of pressure lubrication, is responsible for fuel feeding by auxiliary oil pump or main oil pump.The inlet pipe of main oil pump and auxiliary oil pump is connected on the fuel tank, and main oil pump then links to each other with each lubricating point of nitrogen compressor with the auxiliary oil pump outlet conduit, and lubricant oil is got back to fuel tank through oil returning tube.Its concrete lubricating system is that elder generation starts auxiliary oil pump before the nitrogen compressor startup, restarts nitrogen compressor after lubrication system is normal, the running of booster engine drive main oil pump; Treat that oil pressure stops auxiliary oil pump after normal, by the main oil pump fuel feeding.What main oil pump adopted is gear pump structure, mainly relies on gear pump self to vacuumize, and utilizes barometric pressure that lubrication pressure is entered the mouth to oil pump, and gear pump could proper functioning.But, because homemade gear pump precision difference or the efficient that all can cause gear pump to vacuumize when mild wear appears in mechanical seal reduce, after nitrogen compressor starts, the main oil pump cisco unity malfunction, nitrogen compressor also just can't run well, thereby directly have influence on carrying out smoothly of production, when serious even cause the damage of main oil pump.
Summary of the invention
The purpose of this utility model aims to provide a kind of simple, takes effect rapidly, can prevent effectively that main oil pump from damaging, and guarantees that the nitrogen compressor fuel feeding lubricates and the main oil pump venting gas appliance of normal operation.Its concrete scheme is:
A kind of nitrogen compressor main oil pump venting gas appliance, the pipeline place near the main oil pump inlet flange behind the pipe line check valve of main oil pump lubricating oil inlet connects one section outlet pipe that opening makes progress, and outlet pipe is provided with outlet valve; Between pipeline behind the inlet non-return valve of main oil pump and main oil pump outlet conduit, be connected with one period connecting tube that has stop valve.
Are described outlet pipe and connecting tube φ 8~φ 12mm Stainless Steel Tube.
Because the utility model pipeline behind the safety check of main oil pump lubricating oil inlet has been set up outlet pipe, between pipeline behind the inlet non-return valve and outlet conduit, set up connecting tube, after auxiliary oil pump starts, open stop valve on connecting tube and the outlet valve on the outlet pipe, close outlet valve behind the air in the emptying main oil pump inlet pipe, start nitrogen compressor, treat to close again after oil pressure normally the stop valve on connecting tube, reduce the gear pump amount of vacuumizing, thereby guarantee the proper functioning of main oil pump, guarantee the normal operation of nitrogen compressor, satisfied the needs of producing.
Description of drawings
Accompanying drawing is a nitrogen compressor main oil pump venting gas appliance overall structure schematic representation.
Among the figure: fuel tank 1, inlet pipe 2, outlet pipe 3, outlet valve 4, main oil pump 5, outlet conduit 6, stop valve 7, connecting tube 8, nitrogen compressor 9, auxiliary oil pump 10, inlet non-return valve 11.
Embodiment
By accompanying drawing as seen, nitrogen compressor 7 original lubrication systems are made of fuel tank 1, inlet pipe 2, main oil pump 5, outlet conduit 6, nitrogen compressor 9, auxiliary oil pump 10 and inlet non-return valve 11, main oil pump 5 and auxiliary oil pump 10 are connected on the fuel tank 1 by inlet pipe 2, be responsible for to main oil pump 5 and auxiliary oil pump 10 fuel feeding by fuel tank 1, main oil pump 5 then links to each other with nitrogen compressor 9 with the outlet conduit 6 that auxiliary oil pump 10 leads to, to provide nitrogen compressor 9 lubrication oils.The main oil pump venting gas appliance of the utility model is after inlet non-return valve 11, near the circular hole of opening a φ 10mm on the lubricating oil inlet pipeline 2 at main oil pump 5 inlet flange places, the Stainless Steel Tube of one section opening φ 10mm up of welding and is provided with an outlet valve 4 as outlet pipe 3 on outlet pipe 3 on circular hole.Simultaneously, the Stainless Steel Tube that is connected in series one section φ 10mm at inlet after safety check 11, between the outlet conduit 6 of the inlet pipe 2 of main oil pump 5 and main oil pump 5 is as connecting tube 8, and a stop valve 7 was set on connecting tube 8, to control leading to or closing of connecting tube 8.Match with outlet pipe 3 and the diameter of connecting tube 8, outlet valve 4 and stop valve 7 all adopt the DN10 stop valve.