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CN-224214235-U - Exhaust pipeline of vertical oil cooler of steam turbine main engine

CN224214235UCN 224214235 UCN224214235 UCN 224214235UCN-224214235-U

Abstract

The utility model discloses an exhaust pipeline of a vertical oil cooler of a steam turbine main machine, which belongs to the technical field of oil coolers, and comprises an oil cooler main body, a water inlet, a water outlet, an oil inlet and an oil outlet, wherein the water inlet, the water outlet, the oil inlet and the oil outlet are communicated with the oil cooler main body, a connecting pipe is connected to the oil outlet through flanges, an exhaust pipe main body is connected to the connecting pipe in a communicating way, a housing with two ends being in a communicating structure is detachably connected to the inner side of a top opening of the exhaust pipe main body, metal meshes are symmetrically and fixedly connected to the inner side of the housing, an oil-separating breathable film is compounded between the metal meshes, a bracket fixedly connected with the connecting pipe is arranged on one side of the exhaust pipe main body, a vacuum pump is fixedly connected to the top end of the bracket through a support, lubricating oil is placed under minus 0.08MPa through the vacuum pump, the bubble removal efficiency can reach more than 95%, the cooling effect of the lubricating oil is ensured, and the oil temperature of the lubricating oil is prevented from being too high.

Inventors

  • XU XIANG
  • ZHANG HAIQING

Assignees

  • 江苏旺洲电力设备有限公司

Dates

Publication Date
20260508
Application Date
20250714

Claims (7)

  1. 1. An exhaust pipeline of a vertical oil cooler of a steam turbine main engine comprises an oil cooler main body (1), and a water inlet (2), a water outlet (3), an oil inlet (4) and an oil outlet (5) which are communicated with the oil cooler main body (1), and is characterized in that a connecting pipe (6) is connected to the oil outlet (5) through a flange, and an exhaust pipe main body (7) is communicated and connected to the connecting pipe (6); The inner side of the top opening of the exhaust pipe main body (7) is detachably connected with a cover shell (14) with two ends in a conduction structure, the inner side of the cover shell (14) is symmetrically and fixedly connected with a metal mesh (15), and an oil-insulating and air-permeable membrane (16) is compounded between the metal mesh (15); One side of the exhaust pipe main body (7) is provided with a support (9) fixedly connected with the connecting pipe (6), the top end of the support (9) is fixedly connected with a vacuum pump (11) through a support, the input end of the vacuum pump (11) is connected with a vacuumizing pipe (12) in a conducting mode, and the vacuumizing pipe (12) is connected with the top end of the exhaust pipe main body (7) through a flange.
  2. 2. The exhaust pipeline of the vertical oil cooler of the steam turbine main engine according to claim 1, wherein embedded grooves are formed in the two ends of the connecting pipe (6) in a surrounding mode, and a first sealing gasket (8) is embedded in the inner side of each embedded groove.
  3. 3. The exhaust pipeline of the vertical oil cooler of the steam turbine main engine according to claim 1, wherein a base (10) is welded at the bottom end of the bracket (9), and assembly holes are symmetrically formed in the edge part of the base (10).
  4. 4. The exhaust pipeline of the vertical oil cooler of the steam turbine main engine according to claim 1, wherein the vacuumizing pipe (12) is provided with a pressure gauge (13).
  5. 5. The exhaust pipeline of the vertical oil cooler of the steam turbine main engine according to claim 1, wherein a sealing rubber ring (17) is embedded on the outer wall of the top opening of the housing (14), and the sealing rubber ring (17) is tightly attached to the inner wall of the top opening of the exhaust pipe main body (7).
  6. 6. The exhaust pipeline of the vertical oil cooler of the steam turbine main engine according to claim 1, wherein a second sealing gasket (18) is embedded at the top end of the exhaust pipe main body (7), and the second sealing gasket (18) is used for filling a gap at the joint part of the exhaust pipe main body (7) and the vacuumizing pipe (12).
  7. 7. The exhaust pipeline of the vertical oil cooler of the steam turbine main engine according to claim 1, wherein an exhaust pipe with a closed end is arranged at the output end of the vacuum pump (11), and an automatic pressure relief valve is arranged on the exhaust pipe.

Description

Exhaust pipeline of vertical oil cooler of steam turbine main engine Technical Field The utility model relates to the technical field of oil coolers, in particular to an exhaust pipeline of a vertical oil cooler of a main machine of a steam turbine. Background The oil cooler is turbine oil cooling equipment matched with a steam turbine, is mainly used for controlling the temperature of lubricating oil in an electric power system, and maintains the temperature of the inlet oil of a bearing at 35-45 ℃ through heat exchange between circulating water and oil, so that the safe operation of a unit is ensured. The main structure of the heat exchange element consists of an upper water chamber, a lower water chamber and a shell pipe system, the heat exchange element is mainly made of copper pipes, stainless steel or brass materials can be selected, and the installation modes are divided into vertical and horizontal modes. During service or standby, the oil side of the oil cooler tends to accumulate a significant amount of air. The presence of this air can have an impact on the proper operation of the oil side. If the air is directly put into the oil side to run without being completely discharged, a series of problems can be caused, for example, the oil pressure can be severely fluctuated, and the fluctuation can not only affect the normal operation of the equipment, but also cause more serious consequences, such as accidents of oil break of a bearing or low oil pressure jump, etc., so we propose an exhaust pipeline of the vertical type oil cooler of the steam turbine host machine to solve the problems. Disclosure of utility model 1. Technical problem to be solved Aiming at the problems existing in the prior art, the utility model aims to provide an exhaust pipeline of a vertical oil cooler of a main machine of a steam turbine, which is used for placing lubricating oil under negative pressure of-0.08 MPa through a vacuum pump, so that the bubble removal efficiency can reach more than 95%, the cooling effect of the lubricating oil is ensured, and the oil temperature of the lubricating oil is prevented from being too high. Technical proposal In order to solve the problems, the utility model adopts the following technical scheme. An exhaust pipeline of a vertical oil cooler of a main machine of a steam turbine comprises an oil cooler main body, a water inlet, a water outlet, an oil inlet and an oil outlet, wherein the water inlet, the water outlet, the oil inlet and the oil outlet are communicated with the oil cooler main body; the inner side of the top opening of the exhaust pipe main body is detachably connected with a housing with two ends in a conduction structure, the inner side of the housing is symmetrically and fixedly connected with metal meshes, and an oil-proof breathable film is compounded between the metal meshes; One side of the exhaust pipe main body is provided with a support fixedly connected with the connecting pipe, the top end of the support is fixedly connected with a vacuum pump through a support, the input end of the vacuum pump is connected with a vacuumizing pipe in a conducting mode, and the vacuumizing pipe is connected with the top end of the exhaust pipe main body through a flange. Furthermore, the two ends of the connecting pipe are respectively provided with an embedded groove in a ring mode, and the inner sides of the embedded grooves are embedded with first sealing gaskets. Further, the bottom of the support is welded with a base, and the edge of the base is symmetrically provided with assembly holes. Further, a pressure gauge is arranged on the vacuumizing tube. Further, a sealing rubber ring is inlaid on the outer wall of the top opening of the housing, and the sealing rubber ring is tightly attached to the inner wall of the top opening of the exhaust pipe main body. Further, a second sealing gasket is inlaid at the top end of the exhaust pipe main body, and the second sealing gasket is used for filling a gap between the exhaust pipe main body and the joint part of the vacuumizing pipe. Further, an exhaust pipe with the tail end in a closed structure is arranged at the output end of the vacuum pump, and an automatic pressure relief valve is arranged on the exhaust pipe. Advantageous effects Compared with the prior art, the utility model has the advantages that: (1) According to the scheme, after lubricating oil enters the cooler body through the oil inlet and is cooled, the vacuum pump is started in the process of discharging through the oil outlet, the connecting pipe is used for matching with the exhaust pipe body to vacuumize the oil side of the cooler body, the metal mesh on the inner side of the housing is used for supporting the oil-separating breathable film, meanwhile, the oil-separating breathable film is used for separating out lubricating oil, air in the lubricating oil is separated out under the action of vacuum, the vacuum chamber is arranged inside the vacuum pump, the a