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CN-121993461-A - Control oil purifying device for combustion engine

CN121993461ACN 121993461 ACN121993461 ACN 121993461ACN-121993461-A

Abstract

The invention discloses a control oil purifying device for a combustion engine, which relates to the technical field of fluid pressure actuating mechanisms and control systems, and can realize self-adaptive dynamic distribution of the flow of a purified oil duct and a main oil duct through cooperative arrangement of an oil liquid state sensor, a first valve element, a second valve element and a linkage mechanism, when the pollution degree of oil liquid is increased and needs to be enhanced for purification, the flow of the purified oil duct can be automatically increased, and meanwhile, the flow cross section of the main oil duct is correspondingly reduced, the system has the advantages that the stability of the total flow of the system is maintained, stepless adjustment of the purification intensity is realized on the premise that the normal working pressure and flow of the main loop of the hydraulic control system are not disturbed, the stability of the flow and the pressure of the main hydraulic loop is dynamically maintained according to the real-time pollution degree of hydraulic oil and the system operation working condition, the servo control response lag and the pressure pulsation caused by purification and diversion are effectively avoided, and the dynamic precision and the reliability of the hydraulic control system of the gas turbine are ensured to a certain extent.

Inventors

  • DU KAI
  • GONG WENMING
  • ZHU LING
  • DING JIE

Assignees

  • 江苏华电戚墅堰发电有限公司

Dates

Publication Date
20260508
Application Date
20260312

Claims (10)

  1. 1. A control oil purification device for a gas turbine comprises an outer frame (1), and is characterized in that a main oil duct (11) is fixedly inserted in the outer frame (1), a purification oil duct (12) connected with the main oil duct (11) in parallel is fixedly installed in the outer frame (1), an oil liquid state sensor (13) is fixedly installed on the main oil duct (11), a connecting seat (14) is fixedly communicated with the purification oil duct (12), an oil filter (15) is fixedly installed on the connecting seat (14), a gear pump (16) communicated between the connecting seat (14) and the main oil duct (11) is fixedly installed on the purification oil duct (12), a first valve element (2) connected between the gear pump (16) and the main oil duct (11) is fixedly installed on the main oil duct (12), a second valve element (3) positioned between two ends of the purification oil duct (12), a linkage mechanism (4) is associated between the first valve element (2) and the second valve element (3), and a third valve element (6) positioned at the front end of the connecting seat (14) is fixedly installed on the purification oil duct (12).
  2. 2. A control oil cleaning apparatus for a gas turbine according to claim 1, characterized in that said gear pump (16) is fixedly mounted at the rear end of the connecting seat (14).
  3. 3. The control oil purifying device for a gas turbine according to claim 1, wherein the first valve member (2) comprises a first valve housing (21), a first oil inlet (22) communicated with an oil outlet of the oil filter (15) is formed in one end of the first valve housing (21), a first oil outlet (23) communicated with the main oil duct (11) is formed in a cylindrical surface of the first valve housing (21), a first valve block (24) for blocking the first oil outlet (23) is slidably mounted in the first valve housing (21), and a spring (25) for elastically supporting the first valve block (24) is fixedly mounted in the first valve housing (21).
  4. 4. A control oil purifying apparatus for a gas turbine according to claim 3, wherein said second valve member (3) includes a second valve housing (31), and a first through hole (32) communicating with the main oil passage (11) is formed in a cylindrical surface of said second valve housing (31) therethrough, and a second valve block (33) for blocking said first through hole (32) is slidably installed in said second valve housing (31).
  5. 5. The control oil purifying device for a gas turbine as set forth in claim 4, wherein the linkage mechanism (4) comprises a piston cylinder (41), a post rod (42) arranged in parallel with the first valve block (24) is fixedly arranged at one end of the first valve block, which is far away from the first oil inlet (22), a piston block (43) is slidably arranged in the piston cylinder (41), a communication hole (44) is formed at one end of the piston cylinder (41), which is far away from the piston block (43), and the communication hole (44) is fixedly communicated with one end, which is far away from the first through hole (32), of the second valve housing (31), and hydraulic oil is filled in the second valve block (33) and the piston cylinder (41).
  6. 6. A control oil purifying apparatus for a gas turbine as set forth in claim 5, wherein a first screw (45) disposed in parallel with a sliding track of the piston block (43) is rotatably mounted in the piston cylinder (41), the first screw (45) is screwed with the piston block (43), a rack (46) disposed in parallel therewith is fixedly mounted on the post (42), and a circular gear (47) engaged with the rack (46) is fixedly mounted on the first screw (45).
  7. 7. A control oil cleaning apparatus for a gas turbine according to claim 4, characterized in that the sum of the opening width of said first oil inlet (22) and the opening width of said first through hole (32) is equal to the maximum opening width of the main oil gallery (11).
  8. 8. A control oil purification apparatus for a gas turbine according to claim 3, wherein a check valve (5) is fixedly installed between the first oil outlet (23) and the main oil gallery (11).
  9. 9. The control oil purifying device for a gas turbine according to claim 1, wherein the third valve member (6) comprises a third valve housing (61), a second through hole (62) communicated with the purifying oil duct (12) is formed in the third valve housing (61) in a penetrating manner, a third valve block (63) for blocking the second through hole (62) is arranged in the third valve housing (61) in a sliding manner, a third through hole (64) corresponding to the second through hole (62) is formed in the third valve block (63) in a penetrating manner, a second screw rod (65) extending to the outer side of the third valve housing (61) is connected to the third valve block (63) in a rotating manner, the second screw rod (65) is arranged in parallel with the sliding track of the third valve block (63), and the second screw rod (65) is screwed with the third valve housing (61).
  10. 10. The control oil purifying device for a gas turbine according to claim 9, wherein a flow sensor between the connecting seat (14) and the gear pump (16) is fixedly installed on the main oil duct (11), an indicator lamp associated with the flow sensor is fixedly installed on the outer frame (1), and a pressure sensor is fixedly installed in the third valve housing (61).

Description

Control oil purifying device for combustion engine Technical Field The invention relates to the technical field of fluid pressure actuating mechanisms and control systems, in particular to a control oil purifying device for a combustion engine. Background In the running process of the combustion engine, key actions such as fuel oil regulation, guide vane control and the like depend on a hydraulic control system with high dynamic response, and the system takes oil as a transmission medium, and realizes accurate control of each actuating mechanism of the combustion engine in the stroke and direction through directional flow of the oil. However, the actual running environment of the gas turbine is complex, metal scraps can be generated by abrasion of hydraulic elements in the system in the long-term working process, the metal scraps are mixed into hydraulic control oil to cause pollution, if the polluted oil is not subjected to timely purification treatment, the metal scraps can block a hydraulic pipeline, an abrasion valve core and a sealing element to cause hydraulic element faults, and the safe and stable operation of the gas turbine is directly threatened, so that efficient filtration and purification of the hydraulic control oil are core requirements for maintenance of a hydraulic control system. For this purpose, a control oil purifying apparatus for a combustion engine is proposed to solve some of the problems existing in the prior art described above. Disclosure of Invention The invention aims to solve the defect that the external oil filter can uncontrollably shunt the flow of a system and influence the servo control stability and precision of the hydraulic system when the control oil in a conventional hydraulic system for controlling a fuel engine in the prior art is purified. In order to solve the problems existing in the prior art, the invention adopts the following technical scheme: The utility model provides a control oil purifier for combustion engine, including outer frame, outer frame internal fixation alternates there is the main oil duct, fixed mounting has the parallelly connected purification oil duct of main oil duct in the outer frame, fixed mounting has fluid status sensor on the main oil duct, fixed intercommunication has the connecting seat on the purification oil duct, and the fastening is installed the oil filter on the connecting seat, fixed mounting has the gear pump of intercommunication between connecting seat and main oil duct on the purification oil duct, fixed mounting has the first valve member of connection between gear pump and main oil duct on the purification oil duct, install the second valve member that is located between the purification oil duct both ends on the main oil duct, it has the link gear to associate between first valve member and the second valve member, fixed mounting has the third valve member that is located the connecting seat front end on the purification oil duct. Preferably, the gear pump is fixedly mounted at the rear end of the connecting seat. Preferably, the first valve member comprises a first valve housing, a first oil inlet communicated with the oil outlet of the oil filter is formed in one end of the first valve housing, a first oil outlet communicated with the main oil duct is formed in the cylindrical surface of the first valve housing, a first valve block for blocking the first oil outlet is slidably mounted in the first valve housing, and a spring for elastically supporting the first valve block is fixedly mounted in the first valve housing. Preferably, the second valve member comprises a second valve housing, a first through hole communicated with the main oil duct is formed in the cylindrical surface of the second valve housing in a penetrating mode, and a second valve block used for blocking the first through hole is slidably mounted in the second valve housing. Preferably, the linkage mechanism comprises a piston cylinder, one end, far away from the first oil inlet, of the first valve block is fixedly provided with a post rod which is parallel to the first valve block, the piston block is slidably installed in the piston cylinder, one end, far away from the piston block, of the piston cylinder is provided with a communication hole, the communication hole is fixedly communicated with one end, far away from the first through hole, of the second valve block, and hydraulic oil is filled in the second valve block and the piston cylinder. Preferably, a first screw rod which is arranged in parallel with the sliding track of the piston block is rotatably arranged in the piston cylinder, the first screw rod is in threaded connection with the piston block, a rack which is arranged in parallel with the first screw rod is fixedly arranged on the post rod, and a circular gear which is meshed with the rack is fixedly arranged on the first screw rod. Preferably, the sum of the opening width of the first oil inlet and the opening width of the first