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CN-119266991-B - Mute diesel generator set for low-temperature environment

CN119266991BCN 119266991 BCN119266991 BCN 119266991BCN-119266991-B

Abstract

The invention belongs to the technical field of diesel generator sets, and mainly discloses a silent diesel generator set for a low-temperature environment. With respect to the problem that the diesel engine output shaft increases its own starting load due to the initial connection with the generator input shaft. The novel diesel engine is characterized by comprising a mounting seat, wherein the mounting seat is provided with an acoustic shell, the mounting seat is fixedly connected with a diesel engine and a generator, an output shaft of the diesel engine is fixedly connected with a fixed column, a spline of the fixed column is connected with a sliding shell, a limiting block is connected in the sliding shell in a sliding manner, an input shaft of the generator is fixedly connected with a connecting column, and the connecting column is rotationally connected with a rotating disc. According to the invention, the limiting block is connected and matched with the rotating disc by moving the position of the sliding shell, meanwhile, the sound insulation shell ensures the mute working state of the device, the aim of initially disconnecting the output shaft of the diesel engine and the input shaft of the generator is fulfilled, the diesel engine is only rotated independently for preheating, the rotating load of the output shaft of the diesel engine is reduced, and the extra abrasion of the diesel engine is avoided.

Inventors

  • CAO YULIANG
  • YU JUNFENG
  • LI RENJIANG
  • WANG LEI
  • WANG CHENG
  • LI WEN

Assignees

  • 江苏万泰动力设备有限公司

Dates

Publication Date
20260508
Application Date
20241105

Claims (7)

  1. 1. The silent diesel generator set for the low-temperature environment comprises a mounting seat (1), wherein an acoustic shell (2) is mounted on the mounting seat (1), a diesel engine (3) and a generator (4) are fixedly connected on the mounting seat (1), uniformly distributed exhaust holes and uniformly distributed air inlets are formed in the acoustic shell (2), the silent diesel generator set is characterized by further comprising uniformly distributed first acoustic baffle plates (5), the uniformly distributed first acoustic baffle plates (5) are fixedly connected to the air inlets of the acoustic shell (2), an output shaft of the diesel engine (3) is fixedly connected with a fixed column (6), the fixed column (6) is in splined connection with a sliding shell (7), a limiting block (8) is connected in the sliding shell (7) in a sliding mode, a connecting column (9) is fixedly connected with an input shaft of the generator (4), a rotating disc (10) is rotationally connected with the connecting column (9), the fixed plate (11) is fixedly connected with the rotating disc (10) in a sliding mode, the sliding disc (10) is fixedly connected with the sliding disc (8) through a limiting block (12), a transmission block (13) which is matched with the sliding block (12) in an extrusion mode is connected in the through hole of the rotating disc (10) in a sliding mode, the transmission block (13) is matched with the limiting block (8) in an extrusion mode, and a transmission control mechanism for driving an input shaft of the generator (4) to rotate is arranged on the diesel engine (3); The transmission control mechanism comprises an electric push rod (201), the electric push rod (201) is fixedly connected to the diesel engine (3) close to an output shaft of the diesel engine, a connecting plate (202) which is in limiting rotation connection with the sliding shell (7) is fixedly connected to a telescopic end of the electric push rod (201), a temperature detection device is arranged at a circulation position of engine oil and cooling liquid in the diesel engine (3), an exhaust pipe and an air inlet pipe of the diesel engine (3) penetrate through the sound insulation shell (2), a spring is fixedly connected between the sliding shell (7) and the limiting block (8), a spring is fixedly connected between the sliding block (12) and the connecting column (9), a speed detection component for detecting the rotation speed of an input shaft of the generator (4) is arranged on the connecting column (9), and a connection component for moving the position of the sliding shell (7) is arranged on the connecting plate (202). The speed detection assembly comprises a fixed shell (301), the fixed shell (301) is fixedly connected to one side, close to the generator (4), of the connecting column (9), centrifugal blocks (302) which are evenly distributed in the circumferential direction are connected in a sliding mode in the fixed shell (301), springs are fixedly connected between the centrifugal blocks (302) and the fixed shell (301), a flow guide cavity (303) is arranged in the connecting column (9), the flow guide cavity (303) is communicated with the fixed shell (301) through flow guide holes which are distributed in the circumferential direction, a connecting ring (304) is connected to the connecting column (9) in a rotating mode, an annular cavity is formed in the connecting ring (304), the flow guide cavity (303) is communicated with the annular cavity of the connecting ring (304) through flow guide holes which are distributed in a symmetrical mode, and hydraulic oil is filled in the annular cavity of the flow guide cavity (303) and the annular cavity of the connecting ring (304). The connecting component comprises a connecting cylinder (401), the connecting cylinder (401) is fixedly connected to the connecting plate (202), a piston rod (402) is connected in a sliding manner in the connecting cylinder (401), a first flow guide pipe (403) communicated with an annular cavity of the connecting ring (304) is communicated with one side of the connecting cylinder (401) close to the diesel engine (3), a limit pin (404) is connected in a sliding manner on one side of the connecting cylinder (401) far away from the diesel engine (3), a blind hole in limit fit with the limit pin (404) is formed in the piston rod (402), a spring is fixedly connected between the connecting cylinder (401) and the limit pin (404), a sliding ring (405) is connected to the sliding shell (7) through a spline, a mirror image extruding plate (406) is fixedly connected to the sliding ring (405), a slope is arranged on one side of the extruding plate (406) far away from the sliding ring (405), a rectangular tension spring (407) is connected in a sliding manner, a mirror image extruding plate (407) is fixedly connected to the connecting rod (407), and the connecting rod (407) is fixedly connected with the sliding plate (407), the one end that spliced pole (9) is close to diesel engine (3) is provided with circumference evenly distributed's recess, connecting rod (407) with adjacent recess spacing cooperation on spliced pole (9), in connecting cylinder (401) be close to one side of diesel engine (3) with between piston rod (402) and in first honeycomb duct (403) all annotate hydraulic oil.
  2. 2. A silent diesel generator set for low temperature environment according to claim 1, wherein the cross section of the vent hole of the sound insulation shell (2) is wave-shaped for reflection reducing the size of sound wave passing through it.
  3. 3. The silent diesel generator set for low temperature environment according to claim 1, wherein the cross section of the first sound insulation board (5) is arc-shaped, the concave surface of the first sound insulation board (5) faces downwards, and the projection area of the first sound insulation board (5) in the vertical direction is larger than the cross section area of the air inlet hole of the sound insulation shell (2) and is used for reducing the size of the sound wave passing through the air inlet hole of the sound insulation shell (2).
  4. 4. The silent diesel generator set for a low-temperature environment according to claim 1, wherein an inclined plane is arranged on one side, close to the rotating disc (10), of the sliding block (12), and the inclined plane of the sliding block (12) is in extrusion fit with a through hole of the rotating disc (10) so as to enable the sliding block (12) to synchronously reset when the rotating disc (10) resets.
  5. 5. The silent diesel generator set according to claim 4, further comprising an exhaust gas guiding mechanism, wherein the exhaust gas guiding mechanism is arranged on the upper side of the sound insulation shell (2), the exhaust gas guiding mechanism is used for recycling heat in exhaust gas, the exhaust gas guiding mechanism comprises an air guide shell (501), the air guide shell (501) is fixedly connected to the upper side of the sound insulation shell (2), a filtering device (502) is fixedly connected in the air guide shell (501), the air guide shell (501) is communicated with an exhaust gas pipe of the diesel engine (3), one side of the air guide shell (501) is communicated with an air guide pipe (503), the air guide pipe (503) is inserted into the sound insulation shell (2), the air guide pipe (503) is fixedly connected with an air guide pipe (504) communicated with an air inlet pipe of the diesel engine (3), the air guide pipe (504) penetrates through the air guide pipe (503), a part of the air guide pipe (504) located in the air guide pipe (503) is in a spiral shape, and the air guide shell (503) is provided with an auxiliary air guide component (503) in a control state.
  6. 6. The silent diesel generator set for a low-temperature environment according to claim 5, wherein the auxiliary preheating component comprises a connecting block (601), the connecting block (601) is fixedly connected to the upper side surface in the sound insulation shell (2), the connecting block (601) is fixedly connected with the air duct (503), a through hole communicated with the air duct (503) is formed in the connecting block (601), a first hydraulic cylinder (602) is fixedly connected to the upper side surface in the sound insulation shell (2), a second flow guide pipe (603) communicated with the first flow guide pipe (403) is communicated with the first hydraulic cylinder (602), a sliding plate (604) in sliding connection with the connecting block (601) is fixedly connected to the telescopic end of the first hydraulic cylinder (602), a through hole matched with the through hole of the connecting block (601) is formed in the sliding plate (604), a baffle plate (605) is fixedly connected to the baffle (605) through a connecting frame, a through hole matched with the air duct (503) is formed in the baffle plate (605), and hydraulic oil is filled in the first flow guide pipe (603) and the second hydraulic cylinder (602).
  7. 7. The silent diesel generator set according to claim 6, further comprising an auxiliary sound insulation mechanism (70), wherein the auxiliary sound insulation mechanism (70) is arranged on one side, close to the diesel engine (3), in the sound insulation shell (2), the auxiliary sound insulation mechanism (70) is used for temporarily blocking sound transmission of exhaust holes of the sound insulation shell (2), the auxiliary sound insulation mechanism (70) comprises a second hydraulic cylinder (701), the second hydraulic cylinder (701) is fixedly connected to one side, close to the diesel engine (3), in the sound insulation shell (2), of the second hydraulic cylinder (701), a connecting frame (702) is fixedly connected to the telescopic end of the second hydraulic cylinder (701), a third guide pipe (703) communicated with one side, far away from the diesel engine (3), of the connecting cylinder (401), second sound insulation plates (704) are uniformly distributed in the connecting frame (702), the shape and the function of the second sound insulation plates (704) are identical to those of the first sound insulation plates (5), and the connecting cylinder (701) is fixedly connected to a third guide pipe (703) communicated with one side, far away from the diesel engine (3), of the connecting cylinder (401), and the third guide pipe (703) are provided with a piston rod.

Description

Mute diesel generator set for low-temperature environment Technical Field The invention belongs to the technical field of diesel generator sets, and mainly discloses a silent diesel generator set for a low-temperature environment. Background The diesel generator set is a mechanical device capable of converting chemical energy of diesel into electric energy, and is widely applied to various occasions as a standby power supply or a main power supply, when the silent diesel generator set is started initially in a low-temperature environment, a diesel engine is usually started first to rotate at a low speed for preheating, after the temperature of the diesel engine rises to a set value, the diesel engine starts to rotate stably and drives a generator to perform power generation operation, however, as an output shaft of the diesel engine is connected with an input shaft of the generator through a flange during initial starting, a load started by the generator is fully applied to the output shaft of the diesel engine, which results in an increase of starting impact experienced by the initial starting stage of the diesel engine, so that the possibility of damage of the diesel engine is increased. Disclosure of Invention Aiming at the problem that the starting load of the output shaft of the diesel engine is increased due to the initial connection with the input shaft of the generator, the invention provides a silent diesel generator set for a low-temperature environment. The mute diesel generator set for the low-temperature environment comprises a mounting seat, wherein an acoustic shell is arranged on the mounting seat, a diesel engine and a generator are fixedly connected on the mounting seat, uniformly distributed exhaust holes and uniformly distributed air inlets are formed in the acoustic shell, uniformly distributed first acoustic baffle plates are fixedly connected at the air inlets of the acoustic shell, a fixed column is fixedly connected with an output shaft of the diesel engine, a sliding shell is connected with the fixed column through a spline, a limiting block is connected in the sliding shell in a sliding mode, a connecting column is fixedly connected with an input shaft of the generator, a rotating disc is connected with the connecting column in a rotating mode, a fixed plate connected with the rotating disc in a sliding mode is fixedly connected between the fixed plate and the rotating disc, a spring is fixedly connected between the fixed plate and the rotating disc, the connecting column is connected with a sliding block in a sliding mode with the rotating disc through a through hole in a sliding mode, the transmission block is in a sliding mode, and the limiting block is in a sliding mode, and the transmission block is used for driving the generator input shaft of the diesel engine. In a preferred embodiment of the present invention, the cross-sectional shape of the vent hole in the soundproof case is wavy, so that the size of sound waves passing through the vent hole is reduced by reflection. Preferably, the cross section of the first sound insulation plate is arc-shaped, the concave surface of the first sound insulation plate faces downwards, and the projection area of the first sound insulation plate in the vertical direction is larger than the cross section area of the air inlet hole of the sound insulation shell, so that the size of sound waves passing through the air inlet hole of the sound insulation shell is reduced. Preferably, an inclined plane is arranged on one side, close to the rotating disc, of the sliding block, and the inclined plane of the sliding block is matched with the through hole of the rotating disc in an extrusion mode, so that the sliding block can be reset synchronously when the rotating disc is reset. As the preferable mode of the invention, the transmission control mechanism comprises an electric push rod, the electric push rod is fixedly connected to the position, close to the output shaft, of the diesel engine, a connecting plate which is in limiting rotation connection with the sliding shell is fixedly connected to the telescopic end of the electric push rod, a temperature detection device is arranged at the circulation position of engine oil and cooling liquid in the diesel engine, an exhaust pipe and an air inlet pipe of the diesel engine penetrate through the sound insulation shell, a spring is fixedly connected between the sliding shell and the limiting block, a spring is fixedly connected between the sliding block and the connecting column, a speed detection component for detecting the rotating speed of the input shaft of the generator is arranged on the connecting column, and a connecting component for moving the position of the sliding shell is arranged on the connecting plate. As the preferable mode of the invention, the speed detection assembly comprises a fixed shell, wherein the fixed shell is fixedly connected to one side, close to the generator, of t