Low-noise type diesel generating set

Abstract

The invention belongs to the technical field of diesel generating sets, and particularly relates to a low-noise diesel generating set. Comprising a base; the soundproof box is arranged on the base, a fan, a diesel engine and a generator are arranged on the base, the diesel engine is provided with and communicates with an intake manifold and an exhaust pipe, an input shaft of the generator is fixedly connected with a first connecting seat, and the first connecting seat is slidably connected with sliding shells which are evenly distributed; a first spring is arranged between the sliding shell and the first connecting base, an output shaft of the diesel engine is fixedly connected with a second connecting base, the second connecting base is connected with a sliding ring in a sliding mode, and the sliding ring is fixedly connected with evenly-distributed sliding columns. When the rotating speed of the diesel engine exceeds the rated value, connection between the diesel engine and the generator is automatically disconnected, the generator is prevented from being affected by excess power, and therefore the generator is protected against damage, and stable operation of an electrical system is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of diesel generator sets, and specifically discloses a low-noise diesel generator set. Background Art

[0002] With the continuous growth of social demand for electricity, especially in application scenarios where the power grid is unstable or in remote areas without electricity, diesel generator sets, as a reliable and efficient backup power supply device, have been widely used. A diesel generator set consists of a diesel engine, a generator, and a cooling fan. The diesel engine drives the generator to generate electrical energy. Its working principle is to convert the thermal energy generated by diesel combustion into mechanical energy, and then convert the mechanical energy into electrical energy through the generator.

[0003] However, in actual applications, diesel generator sets face many challenges. For example, when the fuel supply gets out of control, the rotational speed of the diesel engine will increase sharply and exceed its designed safe range. This phenomenon is usually called "runaway". In this case, the output shaft of the diesel engine will rotate at an abnormally high speed and transmit excessive power to the generator. Since the input rotational speed is higher than the normal operating range, the relative movement speed between the rotor and stator inside the generator increases significantly, resulting in abnormal changes in the electromagnetic field intensity, thereby causing current fluctuations and voltage instability. This can damage the electronic components inside the generator and pose a threat to the connected external devices. Summary of the Invention

[0004] To solve the problems mentioned in the above background, the present invention provides a low-noise diesel generator set.

[0005] The technical solution of the present invention is as follows: A low-noise diesel generator set includes: a base; a sound insulation box provided on the base. A fan, a diesel engine, and a generator are provided inside the sound insulation box on the base. The diesel engine is located between the fan and the generator. The diesel engine is provided with and connected to an intake manifold and an exhaust pipe. A first connection seat is fixedly connected to the input shaft of the generator. The first connection seat is slidably connected to uniformly distributed sliding shells. A first spring is provided between the sliding shell and the first connection seat. The sliding shell is provided with an inclined surface. A second connection seat is fixedly connected to the output shaft of the diesel engine. The second connection seat is slidably connected to a sliding ring. A second spring is provided between the sliding ring and the second connection seat. The sliding ring is fixedly connected to uniformly distributed sliding columns that correspond to the sliding shells one by one. The inclined surface of the sliding shell is used to squeeze the adjacent sliding columns, and all the uniformly distributed sliding columns are slidably connected to the second connection seat.

[0006] Further, the second connection seat is fixedly connected with a fixed shell, the fixed shell is fixedly connected with fixing frames which are evenly distributed and correspond to the sliding columns one by one, the fixing frames are fixedly connected with hydraulic push rods, and the telescopic ends of the hydraulic push rods are used to limit the sliding rings.

[0007] Further, the fixed shell is fixedly connected with elastic liquid sacs which are evenly distributed and correspond to the hydraulic push rods one by one, and an oil pipeline is fixedly connected and communicated between the elastic liquid sacs and the adjacent hydraulic push rods.

[0008] Further, a hooked slider is slidably connected to the sliding shell, and the hooked slider is used to hook the adjacent sliding columns.

[0009] Further, the sliding shell is provided with a V-shaped sliding groove, the hooked slider slides along the adjacent V-shaped sliding groove, a fixing plate is fixedly connected inside the sliding shell, and the fixing plate is slidably connected with the adjacent hooked slider.

[0010] Further, the fixing plate is fixedly connected with an elastic telescopic rod, the telescopic end of the elastic telescopic rod is fixedly connected with a sliding plate which is slidably connected with the adjacent sliding shell, and the sliding plate is slidably connected with the adjacent hooked slider.

[0011] Further, a sliding member is slidably connected to the sliding shell, the sliding member is used to drive the adjacent hooked sliders to move synchronously, the sliding member is provided with an inclined side for squeezing the adjacent hooked sliders, the sliding member is used to squeeze the adjacent elastic liquid sacs, a limit pin for limiting the adjacent sliding member is slidably connected to the sliding shell, a first tension spring is arranged between the limit pin and the adjacent sliding shell, and the limit pin is provided with a slope.

[0012] Further, it further includes: a gas guide shell, which is arranged on the intake manifold and is communicated with the intake manifold; a shielding shell, which is slidably connected inside the gas guide shell, and an elastic member is arranged between the shielding shell and the gas guide shell.

[0013] Further, it further includes: an L-shaped block, which is fixedly connected to the shielding shell; a rotating member, which is rotatably connected to the gas guide shell and is used to limit the L-shaped block; a squeezing frame, which is slidably connected to the base, a third spring is arranged between the squeezing frame and the base, the squeezing frame is located on the moving path of the sliding ring, and the squeezing frame is used to squeeze the rotating member.

[0014] Further, an airbag is arranged on one side of the shielding shell close to the intake manifold, the gas guide shell is in pressing contact with the airbag, and the airbag is used to block the intake manifold.

[0015] The beneficial effects of the present invention are as follows: In order to solve the problems of current fluctuations, voltage instability caused by excessive power transmission during diesel engine runaway, and damage to internal parts of the generator, the present invention designs a new connection mechanism. When the rotational speed of the diesel engine exceeds the rated value, this mechanism can automatically disconnect the connection between the diesel engine and the generator, preventing the generator from being affected by excessive power, thereby protecting the generator from damage and ensuring the stable operation of the electrical system; when the diesel engine runs away, by blocking the air inlet to prevent air from entering the cylinder, and at the same time closing the fuel supply channel to cut off the fuel supply, the fuel cannot burn fully, causing the rotational speed of the diesel engine to drop rapidly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the components on the base of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the positional relationship between the first connecting seat and the second connecting seat of the present invention; Figure 4 is a three-dimensional structural sectional view of the fixed shell of the present invention; Figure 5 is an exploded three-dimensional structural diagram of the sliding shell and the sliding column of the present invention; Figure 6 is an exploded three-dimensional structural diagram of the sliding ring and the sliding column of the present invention; Figure 7 is an exploded three-dimensional structural diagram of the first connecting seat and the sliding shell of the present invention; Figure 8 is a three-dimensional structural schematic diagram when the sliding shell and the sliding column of the present invention are in contact; Figure 9 is a three-dimensional structural schematic diagram of the hook-shaped slider of the present invention; Figure 10 is a three-dimensional structural schematic diagram of the V-shaped sliding groove of the present invention; Figure 11 is a three-dimensional structural schematic diagram of the positional relationship of the extrusion frame of the present invention; Figure 12 is a three-dimensional structural schematic diagram of the shielding shell of the present invention; Figure 13 is a three-dimensional structural sectional view of the air guide shell of the present invention; Figure 14 is a three-dimensional structural schematic diagram of the L-shaped block and the rotating part of the present invention.

[0017] Reference numerals: 1 - base, 2 - sound insulation box, 3 - diesel engine, 4 - intake manifold, 5 - exhaust pipe, 6 - generator, 7 - first connection seat, 8 - sliding housing, 9 - second connection seat, 10 - sliding ring, 11 - sliding column, 12 - fixed housing, 13 - fixing bracket, 14 - hydraulic push rod, 15 - elastic liquid bag, 16 - hook-shaped slider, 17 - V-shaped sliding groove, 18 - fixing plate, 19 - elastic telescopic rod, 20 - sliding plate, 21 - sliding member, 2101 - limit pin, 22 - air guide housing, 23 - shielding housing, 24 - L-shaped block, 25 - rotating member, 26 - extrusion bracket, 27 - air bag. Detailed implementation manners

[0018] The following further illustrates the technical solution with specific embodiments. It should be noted that: The words indicating directions such as up, down, left, and right mentioned in this article are only in terms of the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components in this article, for example: first, second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And as used in this application: connection, unless otherwise specified, includes both direct and indirect connections (couplings).

[0019] The present invention aims to solve the problem that when the diesel engine runs away, the generator is damaged due to excessive power transmission, which in turn causes electrical faults such as current fluctuations and voltage instability. The present invention proposes a new connection method to disconnect the connection between the diesel engine and the generator when the rotational speed of the diesel engine exceeds the rated speed, so as to avoid the generator from bearing excessive power transmission, thereby preventing damage to internal parts and electrical faults.

[0020] Embodiment 1: A low-noise diesel generator set, as Figures 1 - 8As shown in the figure, it includes: a base 1; a sound insulation box 2, which is arranged on the base 1. A fan, a diesel engine 3 and a generator 6 located inside the sound insulation box 2 are arranged on the base 1. The diesel engine 3 is located between the fan and the generator 6. The diesel engine 3 is provided with and connected to an intake manifold 4 and an exhaust pipe 5. A first connecting seat 7 is fixedly connected to the input shaft of the generator 6. The first connecting seat 7 is slidably connected with uniformly distributed sliding shells 8. A first spring is arranged between the sliding shell 8 and the first connecting seat 7. The sliding shell 8 is provided with an inclined surface. A second connecting seat 9 is fixedly connected to the output shaft of the diesel engine 3. The second connecting seat 9 is slidably connected with a sliding ring 10. A second spring is arranged between the sliding ring 10 and the second connecting seat 9. The sliding ring 10 is fixedly connected with uniformly distributed sliding columns 11 that correspond to the sliding shells 8 one by one. The inclined surface of the sliding shell 8 is used to squeeze the adjacent sliding columns 11. All the uniformly distributed sliding columns 11 are slidably connected with the second connecting seat 9. The second connecting seat 9 is fixedly connected with a fixed shell 12. The fixed shell 12 is fixedly connected with uniformly distributed fixing frames 13 that correspond to the number of the sliding columns 11 one by one. The fixing frames 13 are fixedly connected with hydraulic push rods 14. The telescopic end of the hydraulic push rod 14 is used to limit the sliding ring 10. The fixed shell 12 is fixedly connected with uniformly distributed elastic liquid sacs 15 that correspond to the hydraulic push rods 14 one by one. An oil delivery pipe is fixedly connected and communicated between the elastic liquid sac 15 and the adjacent hydraulic push rod 14.

[0021] In the above solution, the sound insulation box 2 is used to reduce the noise generated by the parts inside it during use. When the diesel engine 3 runs away, the sliding ring 10 drives the uniformly distributed sliding columns 11 to move to the side away from the generator 6, thereby disconnecting the connection between the input shaft of the generator 6 and the output shaft of the diesel engine 3. When the telescopic part of the hydraulic push rod 14 is inserted into the sliding ring 10, the second spring on the sliding ring 10 is in a compressed state. The oil delivery pipe on the elastic liquid sac 15 is communicated with the side of the fixed part of the adjacent hydraulic push rod 14 facing the center line of the fixed shell 12, so that when the liquid in the elastic liquid sac 15 enters the adjacent hydraulic push rod 14 through the adjacent oil delivery pipe, the telescopic part of the hydraulic push rod 14 can retract into its fixed part, thereby releasing the limit on the sliding ring 10, so that the sliding ring 10 can drive the sliding columns 11 to slide to the side away from the sliding shell 8 under the action of the second spring, so as to actively disconnect the power transmission between the diesel engine 3 and the generator 6. Before using this device, an air outlet pipe can be arranged in the sound insulation box 2 to guide the high-temperature flue gas discharged from the exhaust pipe 5 (not shown in the figure). The base 1 is provided with a control terminal, and the control terminal is electrically connected to all the electrical components in this device.

[0022] Such as Figure 9 And Figure 10As shown in the figure, a sliding hook 16 is slidably connected to the sliding shell 8. The sliding hook 16 is used to hook the adjacent sliding column 11. When the sliding hook 16 is inserted into the adjacent sliding column 11, the sliding shell 8 and the adjacent sliding column 11 form an integral body. The sliding shell 8 is provided with a V-shaped sliding groove 17. The sliding hook 16 slides along the adjacent V-shaped sliding groove 17. A fixed plate 18 is fixedly connected inside the sliding shell 8. The fixed plate 18 is slidably connected to the adjacent sliding hook 16. The fixed plate 18 is fixedly connected with an elastic telescopic rod 19. The telescopic end of the elastic telescopic rod 19 is fixedly connected with a sliding plate 20 that is slidably connected to the adjacent sliding shell 8. The sliding plate 20 is slidably connected to the adjacent sliding hook 16. A sliding member 21 is slidably connected to the sliding shell 8. The sliding member 21 is used to drive the adjacent sliding hook 16 to move synchronously. The sliding member 21 is provided with an inclined side for squeezing the adjacent sliding hook 16. The sliding member 21 is used to squeeze the adjacent elastic liquid sac 15. A limit pin 2101 for limiting the adjacent sliding member 21 is slidably connected to the sliding shell 8. A first tension spring is arranged between the limit pin 2101 and the adjacent sliding shell 8. The limit pin 2101 is provided with a slope.

[0023] In the above solution, the V-shaped sliding groove 17 is used to guide the adjacent sliding hook 16 to the side close to the sliding column 11. Both the fixed plate 18 and the sliding plate 20 are used to limit the state of the adjacent sliding hook 16, so that the sliding hook 16 can only translate horizontally or vertically during the movement. The middle part of the sliding hook 16 has a cylinder, and the sliding hook 16 slides in the adjacent V-shaped sliding groove 17 relying on this cylinder. Figure 9 Taking the parts in the upper sliding shell 8 as an example, during the upward movement of the sliding member 21, it drives the adjacent sliding hook 16 and the cylinder thereon to move synchronously. When the cylinder on the sliding hook 16 moves to the upper side of the adjacent V-shaped sliding groove 17, the limit pin 2101 does not contact the adjacent sliding member 21. When the sliding member 21 continues to move, it squeezes the adjacent sliding hook 16 to the right, so that the cylinder on the sliding hook 16 enters the right side of the adjacent V-shaped sliding groove 17, and at this time the limit pin 2101 has contacted the adjacent sliding member 21.

[0024] Working principle: When the device needs to be used, the staff starts the diesel engine 3 through the control terminal. The intake manifold 4 conveys external gas into the diesel engine 3. Cooperating with the movement of the parts inside the diesel engine 3, the output shaft of the diesel engine 3 rotates counterclockwise (viewed from right to left). At this time, the exhaust gas generated by the combustion of the diesel engine 3 is discharged through the exhaust pipe 5. During the rotation of the output shaft of the diesel engine 3, it drives all the sliding columns 11 and the sliding rings 10 and their attached parts to rotate counterclockwise through the second connecting seat 9. During the rotation of all the sliding columns 11, they first contact the adjacent sliding shells 8 respectively, so that all the sliding columns 11 drive the first connecting seat 7 and the input shaft of the generator 6 to rotate synchronously through the adjacent sliding shells 8 respectively.

[0025] When the input shaft of the generator 6 becomes viscous or solidifies due to internal lubricating oil (when using this device in a low-temperature environment, the lubricating oil inside the generator 6 becomes viscous or even solidifies due to the external environment), the input shaft of the generator 6 will generate resistance, causing its rotational speed to be slower than that of the output shaft of the diesel engine 3. At this time, all the sliding columns 11 respectively squeeze the adjacent sliding shells 8, and the sliding shells 8 immediately move towards the center line direction of the first connecting seat 7 and squeeze the adjacent first springs. After the sliding columns 11 squeeze the adjacent sliding shells 8 until they no longer obstruct the rotation of the sliding columns 11, the sliding shells 8 no longer contact the adjacent sliding columns 11, and the sliding shells 8 move back to their original positions under the action of the adjacent first springs. The subsequent movement mode between the sliding columns 11 and the sliding shells 8 can be repeated as described above.

[0026] During the use of this device, the exhaust pipe 5 passes the high-temperature flue gas discharged through the air outlet pipe inside the sound insulation box 2, enabling the environment around the generator 6 to quickly warm up, promoting the melting of the lubricating oil inside the generator 6. When the viscosity of the lubricating oil inside the generator 6 returns to normal, the user can disconnect the connection between the air outlet pipe inside the sound insulation box 2 and the exhaust pipe 5. At this time, the output shaft of the diesel engine 3 drives all the sliding columns 11, the sliding rings 10 and their attached parts to rotate counterclockwise through the second connecting seat 9. During the rotation of all the sliding columns 11, they first contact the adjacent sliding shells 8 respectively, so that all the sliding columns 11 drive the first connecting seat 7 and the input shaft of the generator 6 to rotate synchronously through the adjacent sliding shells 8 respectively. At this time, the sliding shells 8 will no longer move towards the center line of the first connecting seat 7 under the action of the supporting force provided by the first springs. Through the above steps, the diesel engine 3 will not transmit power to the generator 6 when starting initially. When the viscosity of the lubricating oil inside the generator 6 returns to normal, the diesel engine 3 can transmit power to the generator 6, reducing the load when the diesel engine 3 starts.

[0027] When the viscosity of the lubricating oil inside the generator 6 returns to normal, the control terminal controls the diesel engine 3 to increase its rotational speed. At this time, the rotational speed transmitted from the output shaft of the diesel engine 3 to all the sliding shells 8 through the second connecting seat 9 and all the sliding columns 11 is greater than the rotational speed mentioned above, causing the sliding parts 21 inside the sliding shells 8 to drive the adjacent hook-shaped sliders 16 to move towards the side away from the center line of the first connecting seat 7 under the action of centrifugal force.

[0028] Take Figure 8 the parts inside the upper sliding shell 8 as an example: When the sliding part 21 drives the adjacent hook-shaped slider 16 to move upward (taking the perspectives shown in Figure 9 and Figure 10 as the reference), the cylinder on the hook-shaped slider 16 slides along the adjacent V-shaped sliding groove 17, the hook-shaped slider 16 slides upward along the adjacent fixed plate 18, the hook-shaped slider 16 drives the adjacent sliding plate 20 to move synchronously, and the sliding plate 20 squeezes the telescopic end of the adjacent elastic telescopic rod 19, causing the telescopic part of the elastic telescopic rod 19 to contract.

[0029] When the cylinder on the hook-shaped slider 16 driven by the slider 21 moves to the upper side of the adjacent V-shaped sliding groove 17, the slider 21 continues to move upward under the action of centrifugal force. When the slider 21 continues to move upward, it squeezes the adjacent hook-shaped slider 16 to the right through the hypotenuse on it, so that the cylinder on the hook-shaped slider 16 enters the right part of the adjacent V-shaped sliding groove 17. The slider 21 contacts the slope of the adjacent limit pin 2101 under the action of centrifugal force, and the slider 21 is kept stationary under the action of the first spring adjacent to the limit pin 2101 (at this time, the rotational speed of the output shaft of the diesel engine 3 is at the rated power). At this time, the slider 21 no longer squeezes the adjacent hook-shaped slider 16, and the two are out of contact. Under the action of the reset of the telescopic part of the elastic telescopic rod 19, the adjacent hook-shaped slider 16 is pulled downward through the sliding plate 20, and the cylinder on the hook-shaped slider 16 slides downward along the right part of the adjacent V-shaped sliding groove 17, and the right part of the hook-shaped slider 16 slowly inserts into the adjacent sliding column 11. When the telescopic part of the elastic telescopic rod 19 is reset, the cylinder on the hook-shaped slider 16 is located at the lower side of the right part of the adjacent V-shaped sliding groove 17, and the hook-shaped slider 16 has been inserted into the adjacent sliding column 11 to realize the "connection" between the sliding column 11 and the adjacent sliding shell 8, so that when the rotational speed of the output shaft of the diesel engine 3 decreases, the rotational speeds of the input shaft of the generator 6 and the output shaft of the diesel engine 3 are kept consistent.

[0030] When the rotational speed of the output shaft of the diesel engine 3 exceeds the rated power, it is the phenomenon of "runaway" of the diesel engine 3. At this time, the centrifugal force received by the slider 21 increases, so that the slider 21 can squeeze the adjacent limit pin 2101 to the left (the first spring adjacent to the limit pin 2101 is stretched during the movement of the limit pin 2101). When the slider 21 moves outward, it first contacts the adjacent elastic fluid bag 15, and then the slider 21 squeezes the adjacent elastic fluid bag 15 when it continues to move, so that the liquid in the elastic fluid bag 15 enters the adjacent hydraulic push rod 14 through the adjacent oil pipeline, and the telescopic part of the hydraulic push rod 14 retracts, so as to release the limit on the sliding ring 10. The sliding ring 10 drives all the sliding columns 11 to move to the side away from the generator 6 under the action of the second spring, so that the sliding columns 11 are separated from the contact with the adjacent hook-shaped sliders 16 and the sliding shell 8, so as to actively disconnect the power transmission between the diesel engine 3 and the generator 6 and achieve the effect of protecting the generator 6 and avoiding the generator 6 from bearing excessive power transmission.

[0031] When the diesel engine 3 has a "runaway" situation, the power transmission between the diesel engine 3 and the generator 6 is preferentially disconnected, and the diesel engine 3 is shut down through the control terminal. When the output shaft of the diesel engine 3 stops rotating, the first connecting seat 7 and all the sliding shells 8 no longer rotate. At this time, the centrifugal force of the parts in the sliding shell 8 disappears, and the sliding part 21 is squeezed and reset by the adjacent elastic liquid sac 15, so that the sliding part 21 slides back into the adjacent sliding shell 8 again. After the elastic liquid sac 15 is no longer squeezed by the adjacent sliding part 21 and resets, the liquid in the hydraulic push rod 14 flows back to the adjacent elastic liquid sac 15 through the adjacent oil pipeline), and then the staff processes the diesel engine 3 (the processing method is the same as the existing one). When the "runaway" situation is handled well, the parts with problems in the diesel engine 3 are repaired or replaced.

[0032] Before using the diesel engine 3 again, the parts in the sliding shell 8 need to be reset, and the reset process is as follows: Taking Figure 9 and Figure 10 as an example, first, the staff moves the sliding part 21 to contact its upper side with the adjacent limit pin 2101. After moving the hook-shaped slider 16 and the cylinder on it to the upper side of the V-shaped sliding groove 17, during the movement of the hook-shaped slider 16, the adjacent sliding plate 20 squeezes the telescopic part of the adjacent elastic telescopic rod 19. The staff adjusts the position of the sliding part 21 so that the right side of the sliding part 21 is inserted into the adjacent hook-shaped slider 16 again. At this time, the staff releases the sliding part 21, and under the action of the telescopic part of the elastic telescopic rod 19 extending, the adjacent hook-shaped slider 16 and the adjacent sliding part 21 slide down synchronously until they restore Figure 9 and Figure 10 the state and position in, and then the staff presses the elastic liquid sac 15 to retract the telescopic part of the hydraulic push rod 14. The staff immediately pulls the sliding ring 10 to the right (the sliding ring 10 squeezes the second spring during the movement). After the sliding ring 10 moves to a position where the hydraulic push rod 14 can limit the sliding ring 10, the staff releases the elastic liquid sac 15, and the elastic liquid sac 15 expands, so that the liquid in the hydraulic push rod 14 flows back to the elastic liquid sac 15 through the adjacent oil pipeline, so as to make the telescopic part of the hydraulic push rod 14 extend again and insert into the sliding ring 10 to restore the limit of the sliding ring 10. When the present invention needs to be used again, the above steps can be repeated.

[0033] Embodiment 2: On the basis of Embodiment 1, as Figure 2 and Figures 11 - 14As shown, it also includes: an air guide shell 22, which is arranged on the intake manifold 4, and the air guide shell 22 is connected to the intake manifold 4; a shielding shell 23, which is slidably connected in the air guide shell 22, and an elastic member is arranged between the shielding shell 23 and the air guide shell 22, and also includes: an L-shaped block 24, which is fixed to the shielding shell 23; a rotating member 25, which is rotatably connected to the air guide shell 22, and the rotating member 25 is used to limit the L-shaped block 24; an extrusion frame 26, which is slidably connected to the base 1, and a third spring is arranged between the extrusion frame 26 and the base 1, the extrusion frame 26 is located on the moving path of the sliding ring 10, and the extrusion frame 26 is used to extrude the rotating member 25, and an air bag 27 is arranged on the side of the shielding shell 23 close to the intake manifold 4, the air guide shell 22 is in extrusion contact with the air bag 27, and the air bag 27 is used to block the intake manifold 4.

[0034] In the above scheme, the elastic member on the shielding shell 23 is a multi-stage spring telescopic rod. When the shielding shell 23 does not shield the inside of the air guide shell 22, the elastic member on the shielding shell 23 is in a contracted state, the airbag 27 is in a contracted state and the gas inside it is in a compressed state. When the shielding shell 23 shields the inside of the air guide shell 22, the airbag 27 expands and enhances the sealing between the shielding shell 23 and the air guide shell 22. In normal use, a device for introducing carbon dioxide can be set inside the shielding shell 23, so that after the shielding shell 23 blocks the air guide shell 22, the carbon dioxide is sent into the diesel engine 3 along the intake manifold 4 to shorten the combustion time of the fuel. In order to ensure that the rotating part 25 remains perpendicular to the horizontal plane when it is not squeezed by the squeezing frame 26, a torsion spring can be set between the air guide shell 22 and the rotating part 25. The air guide shell 22 and its accessories can also be set in the oil circuit of the diesel engine 3 to control the connectivity of the oil circuit.

[0035] Working principle: When the diesel engine 3 "runs out of control", the sliding ring 10 moves to the left and squeezes the extrusion frame 26 (the third spring is squeezed during the movement of the extrusion frame 26), so that the two move to the left synchronously. During the movement of the extrusion frame 26, the rotating member 25 is squeezed, causing the rotating member 25 to swing counterclockwise (taking the front view as an example). During the swinging process of the rotating member 25, the L-shaped block 24 is no longer limited.

[0036] When the rotating member 25 no longer limits the L-shaped block 24, the elastic member in the force storage state in the air guide shell 22 quickly pushes the shielding shell 23 downward, so that the shielding shell 23 blocks the air guide shell 22 to achieve the effect of shielding the intake manifold 4 and prevent air from entering the intake manifold 4.

[0037] After the shielding shell 23 slides into the air guide shell 22, the air guide shell 22 no longer shields the airbag 27. The airbag 27 expands and enters the intake manifold 4. The outer side of the airbag 27 fits against the inner wall of the intake manifold 4 to seal the intake manifold 4, thereby improving the sealing performance of the air guide shell 22.

[0038] When it is necessary to reset the shielding shell 23, the staff uses a tool to pull the shielding shell 23 upward. During the movement of the shielding shell 23, the airbag 27 is blocked by the air guide shell 22 and thus contracts. As the shielding shell 23 moves upward, the elastic member is gradually compressed. When the shielding shell 23 moves to a height where the L-shaped block 24 can be limited by the rotating member 25, the staff rotates the rotating member 25 in the reverse direction. During the reverse rotation of the rotating member 25, the limitation of the L-shaped block 24 is restored. Before this, the sliding ring 10 no longer presses the extrusion frame 26, and the extrusion frame 26 moves to the right and resets under the action of the third spring.

[0039] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A low-noise diesel generator set, characterized in that: include: Base (1); A soundproof box (2) is arranged on the base (1); a fan, a diesel engine (3) and a generator (6) are arranged on the base (1) and are located in the soundproof box (2); the diesel engine (3) is located between the fan and the generator (6); the diesel engine (3) is provided with and is connected to an intake manifold (4) and an exhaust pipe (5); an input shaft of the generator (6) is fixedly connected to a first connecting seat (7); the first connecting seat (7) is slidably connected to uniformly distributed sliding shells (8); a first spring is arranged between the sliding shell (8) and the first connecting seat (7); The sliding shell (8) is provided with an inclined surface, the output shaft of the diesel engine (3) is fixedly connected to a second connecting seat (9), the second connecting seat (9) is slidably connected to a sliding ring (10), a second spring is provided between the sliding ring (10) and the second connecting seat (9), the sliding ring (10) is fixedly connected to sliding columns (11) which are evenly distributed and correspond one to one with the sliding shell (8), the inclined surface of the sliding shell (8) is used to squeeze adjacent sliding columns (11), and the evenly distributed sliding columns (11) are all slidably connected to the second connecting seat (9).

2. A low-noise diesel generator set according to claim 1, characterized in that: The second connecting seat (9) is fixedly connected to a fixed shell (12), the fixed shell (12) is fixedly connected to fixed frames (13) which are evenly distributed and correspond in number to the number of the sliding columns (11), the fixed frames (13) are fixedly connected to a hydraulic push rod (14), and the telescopic end of the hydraulic push rod (14) is used to limit the sliding ring (10).

3. A low-noise diesel generator set according to claim 2, characterized in that: The fixed shell (12) is fixedly connected with elastic liquid capsules (15) which are evenly distributed and correspond one to one with the hydraulic push rods (14); the elastic liquid capsules (15) are fixedly connected to adjacent hydraulic push rods (14) and are connected with an oil delivery pipe.

4. A low-noise diesel generator set according to claim 3, characterized in that: The sliding shell (8) is slidably connected to a hook-shaped sliding block (16), and the hook-shaped sliding block (16) is used to hook the adjacent sliding column (11).

5. A low-noise diesel generator set according to claim 4, characterized in that: The sliding shell (8) is provided with a V-shaped sliding groove (17), and the hook-shaped sliding block (16) slides along the adjacent V-shaped sliding groove (17). A fixing plate (18) is fixedly connected in the sliding shell (8), and the fixing plate (18) is slidably connected to the adjacent hook-shaped sliding block (16).

6. A low-noise diesel generator set according to claim 5, characterized in that: The fixed plate (18) is fixedly connected to an elastic telescopic rod (19), the telescopic end of the elastic telescopic rod (19) is fixedly connected to a sliding plate (20) slidably connected to the adjacent sliding shell (8), and the sliding plate (20) is slidably connected to the adjacent hook-shaped sliding block (16).

7. A low-noise diesel generator set according to claim 6, characterized in that: The sliding shell (8) is slidably connected to a sliding member (21), and the sliding member (21) is used to drive the adjacent hook-shaped sliders (16) to move synchronously. The sliding member (21) is provided with a bevel for squeezing the adjacent hook-shaped sliders (16). The sliding member (21) is used to squeeze the adjacent elastic liquid capsule (15). The sliding shell (8) is slidably connected to a limit pin (2101) for limiting the adjacent sliding member (21). A first tension spring is provided between the limit pin (2101) and the adjacent sliding shell (8), and the limit pin (2101) is provided with a slope.

8. A low-noise diesel generator set according to claim 1, characterized in that: Also includes: An air guide housing (22) is arranged on the intake manifold (4), and the air guide housing (22) is in communication with the intake manifold (4); The shielding shell (23) is slidably connected inside the air guiding shell (22), and an elastic member is provided between the shielding shell (23) and the air guiding shell (22).

9. A low-noise diesel generator set according to claim 8, characterized in that: Also includes: An L-shaped block (24) fixedly connected to the shielding shell (23); A rotating member (25) rotatably connected to the air guide housing (22), the rotating member (25) being used to limit the position of the L-shaped block (24); An extrusion frame (26) is slidably connected to the base (1), a third spring is provided between the extrusion frame (26) and the base (1), the extrusion frame (26) is located on the moving path of the sliding ring (10), and the extrusion frame (26) is used to extrude the rotating member (25).

10. A low-noise diesel generator set according to claim 9, characterized in that: An air bag (27) is provided on one side of the shielding shell (23) close to the intake manifold (4), the air guide shell (22) is in compression contact with the air bag (27), and the air bag (27) is used to block the intake manifold (4).

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