A low-noise diesel generator set

Abstract

The present invention belongs to the technical field of diesel generator sets, and in particular relates to a low-noise diesel generator set. It comprises: a base; a soundproof box, which is arranged on the base, on which a fan, a diesel engine and a generator are arranged, the diesel engine is provided with and connected to an intake manifold and an exhaust pipe, the input shaft of the generator is fixedly connected to a first connecting seat, the first connecting seat is slidably connected to a uniformly distributed sliding shell, a first spring is arranged between the sliding shell and the first connecting seat, the output shaft of the diesel engine is fixedly connected to a second connecting seat, the second connecting seat is slidably connected to a sliding ring, and the sliding ring is fixed to uniformly distributed sliding columns. The present invention automatically disconnects the connection between the diesel engine and the generator when the diesel engine speed exceeds the rated value, thereby preventing the generator from being affected by excess power, thereby protecting the generator from damage and ensuring the stable operation of the electrical system.

Description

Technical Field

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

[0002] With the continuous growth of society's demand for electricity, especially in application scenarios with unstable power grids or remote areas without electricity, diesel generator sets have been widely used as a reliable and efficient backup power supply equipment. Diesel generator sets consist of a diesel engine, a generator and a cooling fan. The diesel engine drives the generator to generate electricity. Its working principle is to convert the heat 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 is out of control, the speed of the diesel engine will increase sharply and exceed its designed safety range. This phenomenon is usually called "flying". 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 speed is higher than the normal operating range, the relative movement speed of the rotor and stator inside the generator increases significantly, resulting in abnormal changes in the electromagnetic field strength, thereby causing current fluctuations and voltage instability. This will damage the electronic components inside the generator and pose a threat to connected external equipment. Summary of the Invention

[0004] In order 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: a low-noise diesel generator set, comprising: a base; a soundproof box, which is arranged on the base, and a fan, a diesel engine and a generator located in the soundproof box are arranged 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, the input shaft of the generator is fixedly connected to a first connecting seat, the first connecting seat is slidably connected to a uniformly distributed sliding shell, a first spring is arranged between the sliding shell and the first connecting seat, and the sliding shell is provided with an inclined surface, the output shaft of the diesel engine is fixedly connected to a second connecting seat, the second connecting seat is slidably connected to a sliding ring, a second spring is arranged between the sliding ring and the second connecting seat, the sliding ring is fixedly connected to sliding columns that are uniformly distributed and correspond one to one with the sliding shell, the inclined surface of the sliding shell is used to squeeze adjacent sliding columns, and the uniformly distributed sliding columns are all slidably connected to the second connecting seat.

[0006] Furthermore, the second connecting seat is fixedly connected to a fixed shell, the fixed shell is fixedly connected to fixed frames that are evenly distributed and correspond one-to-one to the number of the sliding columns, the fixed frames are fixedly connected to a hydraulic push rod, and the telescopic end of the hydraulic push rod is used to limit the sliding ring.

[0007] Furthermore, the fixed shell is fixedly connected with elastic liquid bags which are evenly distributed and correspond one to one with the hydraulic push rods. The elastic liquid bags are fixedly connected to the adjacent hydraulic push rods and are connected with oil pipelines.

[0008] Furthermore, the sliding shell is slidably connected to a hook-shaped slider, and the hook-shaped slider is used to hook the adjacent sliding column.

[0009] Furthermore, the sliding shell is provided with a V-shaped sliding groove, the hook-shaped sliding block slides along the adjacent V-shaped sliding groove, a fixing plate is fixed in the sliding shell, and the fixing plate is slidably connected to the adjacent hook-shaped sliding block.

[0010] Furthermore, the fixed plate is fixedly connected to an elastic telescopic rod, the telescopic end of the elastic telescopic rod is fixedly connected to a sliding plate slidably connected to the adjacent sliding shell, and the sliding plate is slidably connected to the adjacent hook-shaped slider.

[0011] Furthermore, the sliding shell is slidably connected to a sliding member, which is used to drive the adjacent hook-shaped sliders to move synchronously. The sliding member is provided with a bevel for squeezing the adjacent hook-shaped sliders. The sliding member is used to squeeze the adjacent elastic liquid bags. The sliding shell is slidably connected to a limit pin for limiting the adjacent sliding members. A first tension spring is provided between the limit pin and the adjacent sliding shell, and the limit pin is provided with a slope.

[0012] Furthermore, it also includes: an air guide housing, which is arranged on the intake manifold and is connected to the intake manifold; a shielding housing, which is slidably connected to the air guide housing, and an elastic member is provided between the shielding housing and the air guide housing.

[0013] Furthermore, it also includes: an L-shaped block, fixedly connected to the shielding shell; a rotating member, rotatably connected to the air guide shell, and the rotating member is used to limit the L-shaped block; an extrusion frame, slidably connected to the base, a third spring is provided between the extrusion frame and the base, the extrusion frame is located on the moving path of the sliding ring, and the extrusion frame is used to extrude the rotating member.

[0014] Furthermore, an airbag is provided on a side of the shielding shell close to the intake manifold, the air guide shell is in squeeze 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 fluctuation and voltage instability caused by excessive power transmission when the diesel engine is running at full speed, and damage to the internal parts of the generator, the present invention designs a new connection mechanism. When the diesel engine speed exceeds the rated value, the mechanism can automatically disconnect the connection between the diesel engine and the generator, preventing the generator from being affected by excess power, thereby protecting the generator from damage and ensuring the stable operation of the electrical system; when the diesel engine is running at full speed, the air inlet is blocked to prevent air from entering the cylinder, and the oil supply channel is closed to cut off the fuel supply, so that the fuel cannot be fully burned, causing the diesel engine speed to drop rapidly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the components on the base of the present invention;

[0018] Figure 3 A schematic diagram of the three-dimensional structure of the positional relationship between the first connecting seat and the second connecting seat of the present invention;

[0019] Figure 4 This is a sectional view of the three-dimensional structure of the fixed shell of the present invention;

[0020] Figure 5 This is an exploded view of the three-dimensional structure of the sliding shell and the sliding column of the present invention;

[0021] Figure 6 This is an exploded view of the three-dimensional structure of the sliding ring and the sliding column of the present invention;

[0022] Figure 7 This is an exploded view of the three-dimensional structure of the first connecting seat and the sliding shell of the present invention;

[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of the sliding shell and the sliding column when they are in contact with each other;

[0024] Figure 9 Schematic diagram of the three-dimensional structure of the hook-shaped slider of the present invention;

[0025] Figure 10 Schematic diagram of the three-dimensional structure of the V-shaped sliding groove of the present invention;

[0026] Figure 11 It is a three-dimensional structural diagram of the position relationship of the extrusion frame of the present invention;

[0027] Figure 12 Schematic diagram of the three-dimensional structure of the shielding shell of the present invention;

[0028] Figure 13 This is a sectional view of the three-dimensional structure of the air guide housing of the present invention;

[0029] Figure 14 It is a schematic diagram of the three-dimensional structure of the L-shaped block and the rotating part of the present invention.

[0030] Figure markings: 1-base, 2-soundproof box, 3-diesel engine, 4-intake manifold, 5-exhaust pipe, 6-generator, 7-first connecting seat, 8-sliding shell, 9-second connecting seat, 10-sliding ring, 11-sliding column, 12-fixed shell, 13-fixed frame, 14-hydraulic push rod, 15-elastic liquid sac, 16-hook-shaped slider, 17-V-shaped sliding groove, 18-fixed plate, 19-elastic telescopic rod, 20-sliding plate, 21-sliding part, 2101-limiting pin, 22-air guide shell, 23-shielding shell, 24-L-shaped block, 25-rotating part, 26-extrusion frame, 27-airbag. DETAILED DESCRIPTION

[0031] The following further describes the technical solution with reference to specific embodiments. It should be noted that terms such as "up," "down," "left," and "right" used herein to indicate directions refer only to the positions of the structures depicted in the corresponding drawings. Component numbers, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connected" in this application, unless otherwise specified, include both direct and indirect connections (couplings).

[0032] The present invention aims to solve the problem that when a diesel engine is running at high speed, the internal parts of the generator are damaged due to excessive power transmission, which in turn causes electrical faults such as current fluctuation and voltage instability. The present invention proposes a new connection method that disconnects the diesel engine and the generator when the diesel engine speed exceeds the rated speed, thereby preventing the generator from being subjected to excessive power transmission, thereby preventing damage to internal parts and electrical faults.

[0033] Example 1: A low-noise diesel generator set, such as Figures 1-8As shown, it includes: a base 1; a soundproof box 2, which is arranged on the base 1, and a fan, a diesel engine 3 and a generator 6 are arranged in the soundproof box 2 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. The input shaft of the generator 6 is fixedly connected to a first connecting seat 7, and the first connecting seat 7 is slidably connected to a uniformly distributed sliding shell 8. A first spring is provided between the sliding shell 8 and the first connecting seat 7, and 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, and 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 dynamic ring 10 is fixed with sliding columns 11 that 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 the adjacent sliding columns 11. The evenly distributed sliding columns 11 are all slidingly connected to the second connecting seat 9. The second connecting seat 9 is fixed with a fixed shell 12. The fixed shell 12 is fixed with fixing frames 13 that are evenly distributed and correspond one-to-one with the number of sliding columns 11. The fixing frame 13 is fixed with a hydraulic push rod 14. The telescopic end of the hydraulic push rod 14 is used to limit the sliding ring 10. The fixed shell 12 is fixed with elastic liquid sacs 15 that are evenly distributed and correspond one-to-one with the hydraulic push rods 14. The elastic liquid sacs 15 are fixed to the adjacent hydraulic push rods 14 and are connected with an oil pipeline.

[0034] In the above scheme, the soundproof box 2 is used to reduce the noise generated by the parts therein when in use. When the diesel engine 3 runs out of control, the sliding ring 10 drives the evenly 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 portion of the hydraulic push rod 14 is inserted into the sliding ring 10, the second spring on the sliding ring 10 is in a squeezed state, and the oil delivery pipe on the elastic liquid sac 15 is connected to the fixed portion of the adjacent hydraulic push rod 14 toward the side of the center line of the fixed shell 12, so as to allow the liquid in the elastic liquid sac 15 to pass through the adjacent When the oil pipeline enters the adjacent hydraulic push rod 14, 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 column 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 set in the soundproof 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, which is electrically connected to all electrical components in this device.

[0035] like Figure 9 and Figure 10As shown, the sliding shell 8 is slidably connected with a hook-shaped slider 16, which is used to hook the adjacent sliding column 11. When the hook-shaped slider 16 is inserted into the adjacent sliding column 11, the sliding shell 8 and the adjacent sliding column 11 form a whole. The sliding shell 8 is provided with a V-shaped sliding groove 17. The hook-shaped slider 16 slides along the adjacent V-shaped sliding groove 17. A fixed plate 18 is fixed in the sliding shell 8. The fixed plate 18 is slidably connected to the adjacent hook-shaped slider 16. The fixed plate 18 is fixed with an elastic telescopic rod 19. The telescopic end of the elastic telescopic rod 19 is fixed with a rod connected to the adjacent sliding shell. 8 is slidably connected to a sliding plate 20, the sliding plate 20 is slidably connected to the adjacent hook-shaped slider 16, the sliding shell 8 is slidably connected to a sliding member 21, the sliding member 21 is used to drive the adjacent hook-shaped slider 16 to move synchronously, the sliding member 21 is provided with a bevel for squeezing the adjacent hook-shaped slider 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.

[0036] In the above scheme, the V-shaped sliding groove 17 is used to guide the adjacent hook-shaped slider 16 to the side close to the sliding column 11. The fixed plate 18 and the sliding plate 20 are both used to limit the state of the adjacent hook-shaped slider 16, so that the hook-shaped slider 16 can only move horizontally or vertically during the movement. The middle part of the hook-shaped slider 16 has a cylinder, and the hook-shaped slider 16 relies on the cylinder to slide in the adjacent V-shaped sliding groove 17 to Figure 9 Taking the parts located in the upper sliding shell 8 as an example, the sliding member 21 drives the adjacent hook-shaped slider 16 and the cylinder thereon to move synchronously during the upward movement. When the cylinder on the hook-shaped slider 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 hook-shaped slider 16 to the right, so that the cylinder on the hook-shaped slider 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.

[0037] Working principle: When this device needs to be used, the staff starts the diesel engine 3 through the control terminal, and the intake manifold 4 transports external gas into the diesel engine 3. In conjunction 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 from the exhaust pipe 5. During the rotation of the output shaft of the diesel engine 3, all the sliding columns 11 and the sliding ring 10 and their attached parts are driven 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.

[0038] When the input shaft of the generator 6 becomes viscous or solidified due to the internal lubricating oil (when using this device in a low temperature environment, the lubricating oil inside the generator 6 becomes viscous or even solidified due to the external environment), the input shaft of the generator 6 will generate resistance, causing its rotation speed to be slower than the rotation speed of the output shaft of the diesel engine 3. At that time, all the sliding columns 11 will squeeze the adjacent sliding shells 8 respectively, and the sliding shells 8 will then move toward the center line direction of the first connecting seat 7 and squeeze the adjacent first spring. After the sliding column 11 squeezes the adjacent sliding shells 8 until it no longer hinders the rotation of the sliding column 11, the sliding shell 8 no longer contacts the adjacent sliding column 11, and the sliding shell 8 moves and resets under the action of the adjacent first spring. The subsequent movement between the sliding column 11 and the sliding shell 8 can be repeated as described above.

[0039] During use of the present device, the exhaust pipe 5 discharges high-temperature flue gas through the exhaust duct in the soundproof box 2, causing the environment around the generator 6 to heat up rapidly, prompting the lubricating oil in the generator 6 to melt. When the viscosity of the lubricating oil in the generator 6 returns to normal, the user can disconnect the exhaust duct in the soundproof box 2 from the exhaust pipe 5. At that time, the output shaft of the diesel engine 3 drives all the sliding posts 11 and sliding rings 10 and their accessories to rotate counterclockwise through the second connecting seat 9. During the rotation process, all the sliding posts 11 first contact the adjacent sliding shells 8 respectively, so that all the sliding posts 11 drive the first connecting seat 7 and the input shaft of the generator 6 to rotate synchronously through the adjacent sliding shells 8. At this time, the sliding shell 8 will no longer move toward the center line of the first connecting seat 7 due to the support force provided by the first spring. Through the above steps, the diesel engine 3 will not transmit power to the generator 6 during the initial rotation. When the viscosity of the lubricating oil in the generator 6 returns to normal, the diesel engine 3 can transmit power to the generator 6, reducing the load of the diesel engine 3 when starting.

[0040] When the viscosity of the lubricating oil in the generator 6 returns to normal, the control terminal controls the diesel engine 3 to increase the speed. At that time, the speed of the output shaft of the diesel engine 3 transmitted to all the sliding shells 8 through the second connecting seat 9 and all the sliding columns 11 is greater than the speed mentioned above, so that the sliding member 21 in the sliding shell 8 drives the adjacent hook-shaped slider 16 to move to the side away from the center line of the first connecting seat 7 under the action of centrifugal force.

[0041] by Figure 8 The parts located in the upper sliding shell 8 are used as an example: when the sliding member 21 drives the adjacent hook-shaped slider 16 to move upward (with Figure 9 and Figure 10 The cylinder on the hook-shaped slider 16 slides along the adjacent V-shaped sliding groove 17, and 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 portion of the elastic telescopic rod 19 to contract.

[0042] When the sliding member 21 drives the cylinder on the hook-shaped slider 16 to move to the upper side of the adjacent V-shaped sliding groove 17, the sliding member 21 continues to move upward under the action of centrifugal force. When the sliding member 21 continues to move upward, it squeezes the adjacent hook-shaped slider 16 to the right through the bevel 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 sliding member 21 contacts the slope of the adjacent limit pin 2101 under the action of the first tension spring adjacent to the limit pin 2101, so that the sliding member 21 remains stationary (at this time, the speed of the output shaft of the diesel engine 3 is at the rated power). At this time, the sliding member 21 no longer squeezes the adjacent hook-shaped slider 16, and the two When the contact is lost, the adjacent hook-shaped slider 16 is pulled downward by the sliding plate 20 under the action of the resetting of the telescopic part of the elastic telescopic rod 19, 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 is slowly inserted 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 achieve the "connection" between the sliding column 11 and the adjacent sliding shell 8, so that when the speed of the output shaft of the diesel engine 3 is reduced, the speed of the input shaft of the generator 6 is consistent with the output shaft speed of the diesel engine 3.

[0043] When the speed of the output shaft of the diesel engine 3 exceeds the rated power, the diesel engine 3 will "run away". At this time, the centrifugal force exerted on the sliding member 21 increases, so that the sliding member 21 can squeeze the adjacent limit pin 2101 to the left (the adjacent first tension spring is stretched during the movement of the limit pin 2101). In the process of outward movement, the sliding member 21 first contacts the adjacent elastic liquid bag 15, and then the sliding member 21 squeezes the adjacent elastic liquid bag 15 as it continues to move, so that the liquid in the elastic liquid bag 15 enters the adjacent hydraulic push rod 14 through the adjacent oil pipeline, causing the telescopic part of the hydraulic push rod 14 to retract, thereby releasing the limit on the sliding ring 10. Under the action of the second spring, the sliding ring 10 drives all the sliding columns 11 to move to the side away from the generator 6, so that the sliding column 11 is out of contact with the adjacent hook-shaped slider 16 and the sliding shell 8, thereby actively disconnecting the power transmission between the diesel engine 3 and the generator 6, thereby protecting the generator 6 and preventing the generator 6 from being subjected to excessive power transmission.

[0044] When the diesel engine 3 "runs away", the power transmission between the diesel engine 3 and the generator 6 is disconnected first, 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 that time, the centrifugal force of the parts in the sliding shell 8 disappears, and the sliding member 21 is squeezed and reset by the adjacent elastic liquid sac 15, so that the sliding member 21 slides back into the adjacent sliding shell 8. The elastic liquid sac 15 is no longer squeezed by the adjacent sliding member 21 and resets, so that the liquid in the hydraulic push rod 14 flows back into the adjacent elastic liquid sac 15 through the adjacent oil pipeline). The staff then handles the diesel engine 3 (the handling method is consistent with the existing one). After the "running away" situation is handled, the problematic parts in the diesel engine 3 are repaired or replaced.

[0045] Before using the diesel engine 3 again, the parts in the sliding housing 8 need to be reset. The reset process is as follows:

[0046] by Figure 9 and Figure 10 For example, the staff first moves the sliding member 21 so that its upper side contacts the adjacent limit pin 2101, and then moves the hook-shaped slider 16 and the cylinder thereon upward 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 portion of the adjacent elastic telescopic rod 19. The staff adjusts the position of the sliding member 21 so that the right side of the sliding member 21 is reinserted into the adjacent hook-shaped slider 16. At this time, the staff releases the sliding member 21, and the telescopic portion of the elastic telescopic rod 19 extends to make the adjacent hook-shaped slider 16 and the adjacent sliding member 21 slide downward synchronously until they are restored. Figure 9 and Figure 10 The staff then presses the elastic liquid capsule 15 to retract the telescopic part of the hydraulic push rod 14, and then pulls the sliding ring 10 to the right (the second spring is squeezed during the movement of the sliding ring 10). After the sliding ring 10 moves to the state and position of the hydraulic push rod 14, the staff releases the elastic liquid capsule 15, and the elastic liquid capsule 15 expands, causing the liquid in the hydraulic push rod 14 to flow back to the elastic liquid capsule 15 through the adjacent oil pipeline, so that the telescopic part of the hydraulic push rod 14 is extended again and inserted into the sliding ring 10 to restore the limitation of the sliding ring 10. When the present invention needs to be used again, the above steps can be repeated.

[0047] Example 2: Based on Example 1, Figure 2 and Figure 11-14As shown, it also includes: an air guide housing 22, which is arranged on the intake manifold 4, and the air guide housing 22 is connected to the intake manifold 4; a shielding shell 23, which is slidably connected to the air guide housing 22, and an elastic member is provided between the shielding shell 23 and the air guide housing 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 housing 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 provided between the extrusion frame 26 and the base 1, and 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 provided on the side of the shielding shell 23 close to the intake manifold 4, and the air guide housing 22 is in extrusion contact with the air bag 27, and the air bag 27 is used to block the intake manifold 4.

[0048] In the above scheme, the elastic part on the shielding shell 23 is a multi-stage spring telescopic rod. When the shielding shell 23 does not block the inside of the air guide shell 22, the elastic part 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 blocks 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.

[0049] Working principle: When the diesel engine 3 "runs away", 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.

[0050] When the rotating part 25 no longer limits the L-shaped block 24, the elastic part in the stored force state in the air guide housing 22 quickly pushes the shielding shell 23 downward, so that the shielding shell 23 blocks the air guide housing 22 to achieve the effect of shielding the intake manifold 4 and prevent air from entering the intake manifold 4.

[0051] 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, sealing the intake manifold 4 and improving the sealing performance of the air guide shell 22.

[0052] When the shielding shell 23 needs to be reset, 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 then shrinks. The shielding shell 23 moves upward to gradually compress the elastic part. When the shielding shell 23 moves to a height where the L-shaped block 24 can be limited by the rotating part 25, the staff rotates the rotating part 25 in the opposite direction. During the reverse side rotation of the rotating part 25, the limitation of the L-shaped block 24 is restored. Before this, the sliding ring 10 no longer squeezes the extrusion frame 26, and the extrusion frame 26 moves to the right and resets under the action of the third spring.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit 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 connected to an intake manifold (4) and an exhaust pipe (5); the 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 provided 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) that 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); The second connecting seat (9) is fixedly connected to a fixed shell (12), the fixed shell (12) is fixedly connected to fixed frames (13) that are evenly distributed and correspond one to one with 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); The fixed shell (12) is fixedly connected with elastic liquid capsules (15) that are evenly distributed and correspond one to one with the hydraulic push rods (14); the elastic liquid capsules (15) are fixedly connected to the adjacent hydraulic push rods (14) and are connected to an oil pipeline; The sliding shell (8) is slidably connected to a sliding member (21), and the sliding member (21) is used to squeeze the adjacent elastic liquid bag (15). The sliding shell (8) is slidably connected to a limiting pin (2101) for limiting the adjacent sliding member (21). A first tension spring is provided between the limiting pin (2101) and the adjacent sliding shell (8), and the limiting pin (2101) is provided with a slope.

2. A low-noise diesel generator set according to claim 1, characterized in that: The sliding shell (8) is slidably connected to a hook-shaped slider (16), and the hook-shaped slider (16) is used to hook the adjacent sliding column (11).

3. A low-noise diesel generator set according to claim 2, 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 fixed plate (18) is fixed in the sliding shell (8), and the fixed plate (18) is slidably connected to the adjacent hook-shaped sliding block (16).

4. A low-noise diesel generator set according to claim 3, 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) that is slidably connected to the adjacent sliding shell (8), and the sliding plate (20) is slidably connected to the adjacent hook-shaped slider (16).

5. A low-noise diesel generator set according to claim 3, characterized in that: The sliding member (21) is used to drive the adjacent hook-shaped sliders (16) to move synchronously, and the sliding member (21) is provided with an oblique edge for squeezing the adjacent hook-shaped sliders (16).

6. 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 to the air guide shell (22), and an elastic member is provided between the shielding shell (23) and the air guide shell (22).

7. A low-noise diesel generator set according to claim 6, 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).

8. A low-noise diesel generator set according to claim 7, 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 squeeze contact with the air bag (27), and the air bag (27) is used to block the intake manifold (4).

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