Gas generator set capable of improving stable output

Abstract

The invention discloses a gas generator set capable of improving stable output, and relates to the technical field of internal combustion engine power generation, the gas generator set comprises a driving mechanism and a generator, and further comprises a speed change mechanism arranged between the driving mechanism and the generator, and the speed change mechanism is used for transiently reducing the input rotating speed; the speed change mechanism comprises a planetary gear set. According to the gas generator set capable of improving stable output, when the load of the generator is unloaded suddenly, the power output of the driving mechanism is connected to a sun gear on the first planetary gear set, then the power is output to the generator after equal-ratio speed reduction through a planet carrier on the first planetary gear set, and compared with the mode that the rotating speed of the driving mechanism is directly changed, the power output is greatly improved; on one hand, sudden rotation speed change caused by sudden load unloading can be effectively buffered, the transient corresponding amplitude of the rotation speed is reduced, the emergency speed reduction requirement of the engine is slowed down, the rotation speed change curve of the engine is smoother, and on the other hand, the situation that the engine enters a light load state possibly due to direct speed regulation of the engine can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of internal combustion engine power generation, and in particular to a gas generator set with improved stable output. Background Art

[0002] A gas-fired internal combustion engine generator set is a small, efficient, and flexible power generation device that is widely used in a variety of scenarios. It is mainly composed of an internal combustion engine, a generator, and a heat dissipation device. To ensure that the mechanical energy conversion of the internal combustion engine is sufficiently efficient, the internal combustion engine is usually directly connected to the generator.

[0003] Since most gas-fired internal combustion engine generator sets are directly electrically connected to electrical appliances, there are potential safety hazards associated with load unloading, including:

[0004] (1) When the generator load suddenly unloads, it may directly exceed the dynamic adjustment range of the AVR, which will trigger a protective shutdown and interrupt the power supply, directly affecting the power demand and the operating cycle of the electrical appliances;

[0005] (2) The electronic speed governor essentially regulates the gas supply to the engine. When dealing with a sudden load unloading of the generator, the gas supply needs to be reduced rapidly, which may lead to safety hazards such as thermal shock in the combustion chamber and imbalance of the air-fuel ratio.

[0006] In order to solve the above problems, we propose a gas generator set with improved stable output. Summary of the Invention

[0007] [Technical problems solved]

[0008] In response to the shortcomings of the existing technology, the present invention provides a gas generator set with improved stable output, which has the advantages of reducing the transient corresponding amplitude of the speed and shunting energy storage, and can effectively solve the problems in the background technology.

[0009]

Technical solution

[0010] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a gas generator set with improved stable output, comprising a drive mechanism and a generator, and also comprising a speed change mechanism disposed between the drive mechanism and the generator, for transiently reducing the input speed;

[0011] The speed change mechanism includes a planetary gear set. When the speed change mechanism is in a non-speed change state, the sun gear on the planetary gear set rotates synchronously with the planet carrier. When the speed change mechanism is in a speed change state, the ring gear on the planetary gear set is fixed, the sun gear serves as a power input connected to the drive mechanism, and the planet carrier serves as a power output connected to the generator.

[0012] Preferably, the driving mechanism is a gas internal combustion engine, which is connected to a frame together with the generator and the speed change mechanism. A heat dissipation mechanism is provided on the frame. The liquid cooling mechanism is any heat dissipation mechanism that is well known to technicians in this field and will not be described in detail in this embodiment.

[0013] Preferably, the planetary gear set 1 is coaxially arranged with the input shaft on the drive mechanism and the output shaft on the generator, and a connecting key sleeve is also provided on the input shaft, the connecting key sleeve is key-connected to the input shaft, and the connecting key sleeve is key-connected to the sun gear on the planetary gear set 1, and the connecting key sleeve can be key-engaged with the planetary frame on the planetary gear set 1.

[0014] Preferably, a keyway 2 that matches the connecting key sleeve structure is provided on the sun gear of the planetary gear set 1, and a keyway 1 that matches the connecting key sleeve structure is also provided on the planetary carrier of the planetary gear set 1. The connecting frame is fixedly connected to the planetary carrier on the planetary gear set 1, and the connecting frame can also form a key connection with the connecting key sleeve.

[0015] Preferably, the speed change mechanism further includes a planetary gear set 2, the planet carrier on the planetary gear set 2 is connected to the input shaft as a power input, and the sun gear on the planetary gear set 2 is externally connected to an energy storage mechanism as a power output.

[0016] Preferably, a housing is further provided outside the planetary gear set 1 and the planetary gear set 2, the ring gear of the planetary gear set 2 is fixedly connected to the housing, and the ring gear on the planetary gear set 1 is rotationally connected to the inside of the housing in a non-fixed state.

[0017] Preferably, in planetary gear set 1 and planetary gear set 2, when the ring gear is fixed, when the sun gear is used as input and the planetary carrier is used as output, the speed slows down and the torque increases. On the contrary, when the planetary carrier is used as input and the sun gear is used as output, the speed increases and the torque decreases.

[0018] Preferably, a through groove is provided on the sun gear of the planetary gear set 2, the diameter of the through groove is larger than the maximum outer diameter of the connecting key sleeve, and a key groove 3 is provided on the planetary carrier of the planetary gear set 2 to form a key engagement with the connecting key sleeve.

[0019] Preferably, the planetary gear set 2 is coaxially arranged with the planetary gear set 1, the input shaft and the output shaft, and the planetary carrier on the planetary gear set 2 can be keyed into engagement with the connecting key sleeve. Thus, when the planetary gear set 1 and the planetary gear set 2 are coaxially arranged with the output shaft and the input shaft, the integration of the entire system structure is higher, the stability is higher, and the mechanical wear is smaller.

[0020] Preferably, the sun gear on the second planetary gear set is connected to an output gear set, which includes two axially vertically arranged helical gears, one of which is fixedly connected to the sun gear on the second planetary gear set, and the other is fixedly connected to the power input end of the energy storage mechanism.

[0021] Preferably, the energy storage mechanism is a generator + battery, and the rated power speed of the generator attached to the energy storage mechanism matches the output speed of the planetary gear set two.

[0022] Preferably, the speed change mechanism further includes a telescopic driving member, which is used to drive the connecting key sleeve to move in its axial direction.

[0023] Preferably, the telescopic drive component is any telescopic drive component well known to those skilled in the art, such as a hydraulic cylinder, a pneumatic cylinder, an electric push rod, and the like, and will not be elaborated on here. The main body of the telescopic drive component is fixedly connected to the outside and may be fixedly connected to the frame.

[0024] Preferably, the ring gear on the planetary gear set 1 is attached with a locking assembly for fixing the ring gear on the planetary gear set 1 in the shifting state of the speed change mechanism.

[0025] Preferably, the locking assembly includes at least two telescopic sub-rods, which are symmetrically distributed on the outside of the ring gear on the planetary gear set, and the ends of the sliding rods on the at least two telescopic sub-rods are opposite to the ring gear on the planetary gear set.

[0026] Preferably, the locking assembly further comprises a telescopic main rod, and at least two of the telescopic secondary rods are connected to the telescopic main rod. When the telescopic main rod is compressed, the two telescopic secondary rods are driven to extend and engage against the outer wall of an upper gear ring of the planetary gear set.

[0027] Preferably, the fixed rods of the two telescopic sub-rods are fixedly connected to the outer shell of the speed change mechanism, and the sliding rods thereof extend into the interior of the outer shell. The telescopic sub-rods and the telescopic main rod are hydraulically transmitted, and the telescopic main rod and the telescopic sub-rod are completely filled with liquid. When the interior of the telescopic main rod is under positive pressure and extended, the interior of the telescopic sub-rod is under negative pressure and retracted. When the interior of the telescopic main rod is under negative pressure and retracted, the interior of the telescopic sub-rod is under positive pressure and extended.

[0028] Preferably, the slide rod on the telescopic main rod is fixedly connected to the slide rod on the telescopic driving member, so that when the telescopic driving member drives the connecting key sleeve to move, the slide rod of the telescopic driving member drives the slide rod of the telescopic main rod to move synchronously.

[0029] Preferably, when the telescopic drive member drives the connecting key sleeve to simultaneously form a key engagement state with the sun gear and the planetary carrier on the planetary gear set, the telescopic drive member and the sliding rod on the telescopic main rod are in an extended state, and the telescopic secondary rod is in a negative pressure retracted state to disengage from the upper gear ring of the planetary gear set; when the telescopic drive member drives the connecting key sleeve to disengage from the key engagement with the planetary carrier on the planetary gear set, the telescopic drive member and the sliding rod on the telescopic main rod are in a retracted state, and the telescopic secondary rod is in a positive pressure extended state to form an engagement with the upper gear ring of the planetary gear set.

[0030] Preferably, a key segment 2 is provided on the connecting key sleeve, and a key groove 4 is provided on the sun gear of the planetary gear set 2 to form a key engagement with the key segment 2. The planet carrier on the planetary gear set 1 includes a smooth segment and a key segment 1 to form a key engagement with its planetary gear, and teeth are provided on this planet carrier. A meshing groove that can mesh with the meshing groove is provided on the planet carrier of the planetary gear set 2. When the meshing groove meshes with the teeth, the key segment 1 of the planet carrier on the planetary gear set 1 disengages from the key engagement with the corresponding planetary gear.

[0031] Preferably, the planet carrier on the first planetary gear set is externally connected to a telescopic driving member for driving the planet carrier to move based on its axial direction.

[0032] Preferably, a cavity is provided on the connecting frame. When the key segment 2 on the connecting key sleeve forms a key engagement with the key groove 4 provided on the sun gear on the planetary gear set 2, and at the same time the teeth form an engagement with the meshing groove, the key segment other than the key segment 2 on the connecting key sleeve is located inside the cavity, thereby causing the connecting key sleeve to disengage from the key engagement with the connecting frame.

[0033] Preferably, in order to ensure that the planetary carrier on the planetary gear set 1 does not move axially when the connecting frame drives the planetary carrier to move, it is necessary to install a guard on the ring gear on the planetary gear set 1 to provide movement protection for the planetary gears on the planetary gear set 1.

[0034] Beneficial effects

[0035] Compared with the prior art, the present invention provides a gas generator set with improved stable output, which has the following beneficial effects:

[0036] This gas generator set with improved stable output, when the load of the generator is suddenly unloaded, connects the power output of the driving mechanism to the sun gear on the planetary gear set, and then outputs it to the generator after proportional speed reduction through the planetary carrier on the planetary gear set. Compared with directly changing the speed of the driving mechanism, on the one hand, it can effectively buffer the sudden change in speed caused by the sudden load unloading, reduce the corresponding amplitude of the transient speed, and alleviate the need for emergency deceleration of the engine, making the engine speed change curve smoother. On the other hand, it can avoid the direct engine speed regulation that may cause the engine to enter a light load state, and reduce problems such as incomplete combustion, carbon deposits, and lubricating oil deterioration. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The figure is a schematic diagram of the overall structure of a gas generator set with improved stable output according to the present invention.

[0038] Figure 2 The present invention is a front view of a gas generator set with improved stable output from one perspective.

[0039] Figure 3 The figure is a schematic structural diagram of a speed change mechanism in a gas-fired generator set for improving stable output according to the present invention.

[0040] Figure 4 This is an exploded diagram of the structure of a speed change mechanism in a gas-fired generator set for improving stable output according to the present invention.

[0041] Figure 5 This is a structural analysis diagram of a speed change mechanism in a gas-fired generator set for improving stable output according to the present invention.

[0042] Figure 6 This is an exploded view of the structure of a planetary gear set 2 used in a speed change mechanism in a gas-fired generator set for improving stable output according to the present invention.

[0043] Figure 7 The present invention is a schematic structural diagram of a telescopic drive member used in a speed change mechanism in a gas-fired generator set for improving stable output as a preferred embodiment.

[0044] Figure 8 The figure is a schematic structural diagram of a preferred embodiment of a speed change mechanism in a gas-fired generator set for improving stable output according to the present invention.

[0045] Figure 9 The figure is a schematic diagram of the operating state of a speed change mechanism in a gas-fired generator set for improving stable output according to the present invention as a preferred embodiment.

[0046] The arrows indicate the movement direction of the structural features.

[0047] In the picture:

[0048] 1. Driving mechanism; 2. Generator; 3. Speed ​​changing mechanism; 4. Energy storage mechanism; 5. Frame;

[0049] 11. Input shaft;

[0050] 21. Output shaft;

[0051] 31. Connecting frame; 32. Planetary gear set 1; 33. Connecting key sleeve; 34. Planetary gear set 2; 35. Output gear set; 36. Telescopic drive member;

[0052] 311, keyway 1; 312, key segment 1; 313, smooth segment; 314, tooth; 315, cavity;

[0053] 321, keyway 2;

[0054] 331, key segment 2;

[0055] 341, keyway three; 342, through slot; 343, engagement slot;

[0056] 361, telescopic main rod; 362, telescopic auxiliary rod;

[0057] 3421, keyway four. DETAILED DESCRIPTION

[0058] To facilitate understanding of the technical means, creative features, objectives, and functional benefits of the present invention, the present invention will be further described below with reference to the accompanying drawings of the embodiments of the present invention. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0059] [Example 1]

[0060] In order to address the shortcomings of existing technologies, such as Figure 1 、 2 As shown, the present invention provides a gas generator set with improved stable output, comprising a driving mechanism 1 and a generator 2, characterized in that it further comprises a speed change mechanism 3 disposed between the driving mechanism 1 and the generator 2 for transiently reducing the input speed;

[0061] Among them, the driving mechanism 1 is a gas internal combustion engine, and the gas internal combustion engine, the generator 2, and the speed change mechanism 3 are connected to the frame 5. A heat dissipation mechanism is provided on the frame 5. The liquid cooling mechanism is any heat dissipation mechanism that is well known and can be known to technicians in this field, and will not be described in detail in this embodiment.

[0062] It should be noted that during the operation of the gas generator set, the generator 2 is divided into a full load state and a light load state. The full load state means that the gas generator set continues to operate at the rated power. In the full load state, the input shaft 11 on the drive mechanism 1 and the output shaft 21 on the generator 2 keep the same speed. When the load is suddenly unloaded, in order to enable the generator 2 to output stably under the light load state, it is necessary to convert the output speed of the drive mechanism 1 into the low speed required by the generator 2 under the light load state through the speed change mechanism 3.

[0063] Specifically, such as Figures 3-5 As shown, a speed change mechanism 3 for a gas generator set with improved stable output is shown. The speed change mechanism 3 includes a planetary gear set 32. When the speed change mechanism 3 is in a non-speed change state, the sun gear on the planetary gear set 32 ​​rotates synchronously with the planet carrier. When the speed change mechanism 3 is in a speed change state, the ring gear on the planetary gear set 32 ​​is fixed. The sun gear is connected to the drive mechanism 1 as a power input, and the planet carrier is connected to the generator 2 as a power output.

[0064] The planetary gear set 1 32 is coaxially arranged with the input shaft 11 on the drive mechanism 1 and the output shaft 21 on the generator 2. A connecting key sleeve 33 is also provided on the input shaft 11. The connecting key sleeve 33 is key-connected to the input shaft 11, and the connecting key sleeve 33 is key-connected to the sun gear on the planetary gear set 1 32. The connecting key sleeve 33 can form a key engagement with the planetary carrier on the planetary gear set 1 32.

[0065] The ring gear on the planetary gear set 1 32 is attached with a locking assembly for fixing the ring gear on the planetary gear set 1 32 when the speed change mechanism 3 is in the speed change state.

[0066] Among them, a keyway 2 321 is provided on the sun gear of the planetary gear set 1 32, which is compatible with the connecting key sleeve 33 structure, and a keyway 1 311 is also provided on the planetary carrier of the planetary gear set 1 32, which is compatible with the connecting key sleeve 33 structure. The connecting frame 31 is fixedly connected to the planetary carrier on the planetary gear set 1 32, and the connecting frame 31 can also form a key connection with the connecting key sleeve 33.

[0067] It is worth mentioning that when the load of the generator 2 is suddenly unloaded, the power output of the drive mechanism 1 is connected to the sun gear on the planetary gear set 32, and then the power is output to the generator 2 after being proportionally reduced through the planetary carrier on the planetary gear set 32. Compared with directly changing the speed of the drive mechanism 1, on the one hand, it can effectively buffer the sudden change in speed caused by the sudden load unloading, reduce the corresponding amplitude of the transient speed, and alleviate the need for emergency deceleration of the engine, making the engine speed change curve smoother. On the other hand, it can avoid the possibility that direct engine speed regulation may cause the engine to enter a light-load state, thereby reducing problems such as incomplete combustion, carbon deposits, and lubricating oil deterioration.

[0068] In addition, those skilled in the art will understand that the present invention is not limited to only this embodiment as a method for dealing with transient conditions of load unloading. In view of actual implementation requirements, such as in order to enable the output speed of the drive mechanism 1 to support the stable output of the generator 2 after the load unloading, this embodiment can be implemented on the basis of the existing electronic speed control technology.

[0069] Furthermore, the speed change mechanism 3 further includes a telescopic driving member 36 , which is used to drive the connecting key sleeve 33 to move in its axial direction.

[0070] Among them, the telescopic driving component 36 is any telescopic driving component that is well known to technicians in this field, such as a hydraulic cylinder, a pneumatic cylinder, an electric push rod, and the like, and will not be described in detail here. The main body of the telescopic driving component 36 is fixedly connected to the outside and can be fixedly connected to the frame 5.

[0071] It should be noted that the present invention is a gas generator set with improved stable output. By providing a speed change mechanism 3, when the gas generator set is operating under the full load state of the generator 2, the rotational speeds of the output shaft 21 and the input shaft 11 should be consistent, that is, the transmission of the planetary gear set 1 32 is directly skipped. At this time, the connecting key sleeve 33 should simultaneously form a key engagement with the connecting frame 31 and the sun gear on the planetary gear set 1 32, and the ring gear on the planetary gear set 1 32 should be in a non-fixed state. In this state, when the input shaft 11 rotates, the planetary gear set 1 32 is driven to rotate as a whole. During the rotation process, the planetary gear set 1 32 is driven to rotate synchronously through the connecting frame 31.

[0072] When the load-unloaded gas generator set is operating under a light-load state of the generator 2, in order to quickly respond to the excess kinetic energy generated by the drive mechanism 1, the external telescopic drive member 36 is used to drive the connecting key sleeve 33 to move, so that the connecting key sleeve 33 is disengaged from the key engagement with the connecting frame 31 and only maintains the key engagement with the sun gear on the planetary gear set 1 32. At the same time, the ring gear on the planetary gear set 1 32 needs to be fixed. In this state, the input shaft 11 drives the sun gear on the planetary gear set 1 32 to rotate. Because the ring gear is fixed, during the rotation of the sun gear, the planetary gears attached to the planetary carrier on the planetary gear set 1 32 engage with the sun gear, driving the planetary carrier to output a proportional reduction in speed based on the speed of the sun gear.

[0073] As a preferred embodiment, Figure 7 As shown, the locking assembly includes at least two telescopic secondary rods 362, which are symmetrically distributed on the outer sides of the ring gear of the planetary gear set 32, and the ends of the sliding rods on the at least two telescopic secondary rods 362 are opposite to the ring gear of the planetary gear set 32. The locking assembly also includes a telescopic main rod 361, and the at least two telescopic secondary rods 362 are connected to the telescopic main rod 361;

[0074] The fixed rods of the two telescopic sub-rods 362 are fixedly connected to the outer shell of the speed change mechanism 3, and their sliding rods are extended to the inside of the outer shell. The telescopic sub-rods 362 and the telescopic main rod 361 are hydraulically transmitted. The telescopic main rod 361 and the telescopic sub-rods 362 are completely filled with liquid. When the interior of the telescopic main rod 361 is under positive pressure and extended, the interior of the telescopic sub-rod 362 is under negative pressure and retracted. When the interior of the telescopic main rod 361 is under negative pressure and retracted, the interior of the telescopic sub-rod 362 is under positive pressure and extended.

[0075] As a preferred embodiment, the sliding rod on the telescopic main rod 361 is fixedly connected to the sliding rod on the telescopic driving member 36, so that when the telescopic driving member 36 drives the connecting key sleeve 33 to move, the sliding rod of the telescopic driving member 36 drives the sliding rod of the telescopic main rod 361 to move synchronously.

[0076] Among them, when the telescopic driving member 36 drives the connecting key sleeve 33 to form a key engagement state with the sun gear and the planetary carrier on the planetary gear set 32 ​​at the same time, the telescopic driving member 36 and the sliding rod on the telescopic main rod 361 are in an extended state, and the telescopic sub-rod 362 is in a negative pressure retracted state to disengage from the ring gear on the planetary gear set 32. When the telescopic driving member 36 drives the connecting key sleeve 33 to disengage from the key engagement with the planetary carrier on the planetary gear set 32, the telescopic driving member 36 and the sliding rod on the telescopic main rod 361 are in a retracted state, and the telescopic sub-rod 362 is in a positive pressure extended state to form an engagement with the ring gear on the planetary gear set 32.

[0077] In this embodiment, those skilled in the art will appreciate that in order to avoid mechanical shock during the process of different degrees of engagement between the connecting key sleeve 33 and the planetary gear set 32, key structures such as the speed change mechanism 3 may be coated with a layer of rubber on its surface to cushion the mechanical shock during engagement.

[0078] [Example 2]

[0079] In the first embodiment described above, the output speed of the drive mechanism 1 is adjusted to the speed required for safe operation of the drive mechanism 1 under the load unloading state by the planetary gear set 1 32. Considering that there is excess kinetic energy of the drive mechanism 1, in order to realize the recovery and utilization of the excess kinetic energy of the drive mechanism 1, based on the first embodiment described above, this embodiment is proposed:

[0080] Specific, and Figures 2 to 5 As shown, a speed change mechanism 3 for a gas generator set with improved stable output, the speed change mechanism 3 also includes a second planetary gear set 34, the planet carrier on the second planetary gear set 34 is connected to the input shaft 11 as a power input, and the sun gear on the second planetary gear set 34 is externally connected to the energy storage mechanism 4 as a power output;

[0081] A housing is further provided outside the planetary gear set 1 32 and the planetary gear set 2 34. The ring gear of the planetary gear set 2 34 is fixedly connected to the housing, and the ring gear of the planetary gear set 1 32 is rotationally connected to the interior of the housing in a non-fixed state.

[0082] In planetary gear set 1 32 and planetary gear set 2 34 , when the ring gear is fixed, when the sun gear serves as input and the planet carrier serves as output, the speed decreases and the torque increases. Conversely, when the planet carrier serves as input and the sun gear serves as output, the speed increases and the torque decreases.

[0083] A through slot 342 is provided on the sun gear of the second planetary gear set 34 , the diameter of which is larger than the maximum outer diameter of the connecting key sleeve 33 , and a key slot 341 is provided on the planet carrier of the second planetary gear set 34 to form a key engagement with the connecting key sleeve 33 .

[0084] It should be noted that the present invention is a gas generator set with improved stable output. Through the speed change mechanism 3, in the above-mentioned embodiment 1, the speed of the drive mechanism 1 is reduced and adjusted by the planetary gear set 1 32. In this embodiment, when the generator 2 is in a low-load state, the connecting key sleeve 33 is moved to form a key engagement with the planetary frame on the planetary gear set 2 34, and the ring gear on the planetary gear set 2 34 is in a fixed state. When the input shaft 11 rotates, the planetary frame on the planetary gear set 2 34 is driven to rotate through the connecting key sleeve 33. At the same time as the planetary frame rotates, the sun gear is driven to rotate based on the engagement of the planetary gears thereon with the sun gear, and the sun gear serves as the power input to the energy storage mechanism 4.

[0085] It is worth mentioning that when there is a sudden load unloading situation, the connecting key sleeve 33 is moved to the planetary gear set 2 34 and simultaneously forms a key engagement with the planetary gear set 1 32 and the planetary gear set 2 34. On the basis of the engine's proportional speed reduction output through the planetary gear set 1 32, the engine's proportional speed increase output is transmitted to the generator 2 attached to the energy storage mechanism 4 through the planetary gear set 2 34, so that the generator 2 can convert the kinetic energy after the proportional speed increase into electrical energy and store it in the battery. While effectively diverting the excess torque of the driving mechanism 1, the kinetic energy can be efficiently recovered. In addition, the battery energy storage does not need to consider the low power factor of inductive loads such as electrical appliances. Compared with the flywheel energy storage method, the energy conversion rate is higher and the storage period is longer.

[0086] As a preferred embodiment, planetary gear set two 34 is coaxially arranged with planetary gear set one 32, input shaft 11, and output shaft 21, and the planetary carrier on planetary gear set two 34 can form a key engagement with the connecting key sleeve 33. In this way, when planetary gear set one 32 and planetary gear set two 34 are both coaxially arranged with output shaft 21 and input shaft 11, the integration of the entire system structure is higher, the stability is higher, and the mechanical wear will be smaller.

[0087] As a preferred embodiment, Figure 3 As shown, the sun gear on the second planetary gear set 34 is connected to an output gear set 35, and the output gear set 35 includes two axially vertically mounted helical gears, one of which is fixedly connected to the sun gear on the second planetary gear set 34, and the other helical gear is fixedly connected to the power input end of the energy storage mechanism 4.

[0088] As a preferred embodiment, the energy storage mechanism 4 is a generator 2 + a battery, and the rated power speed of the generator 2 attached to the energy storage mechanism 4 matches the output speed of the planetary gear set 2 34 .

[0089] [Example 3]

[0090] Based on the above-mentioned second embodiment, considering that when the speed change mechanism 3 is in a state of sudden load unloading, the torque of the transmission components such as the speed change mechanism 3 changes greatly, there is a risk of structural component damage and thus the inability to continue normal transmission. For example, the locking assembly on the planetary gear set 1 32 is damaged and cannot be locked, and other unexpected situations, in order to cope with such unexpected situations, this embodiment is proposed:

[0091] Specifically, such as Figures 8-9 As shown, a speed change mechanism 3 for a gas-fired generator set with improved stable output is provided. A second key segment 331 is provided on a connecting key sleeve 33, and a fourth key groove 3421 is provided on the sun gear of a second planetary gear set 34 to form a key engagement with the second key segment 331. The planet carrier of the first planetary gear set 32 ​​includes a smooth surface segment 313 and a first key segment 312 to form a key engagement with its planetary gears. The planet carrier is provided with teeth 314, and the planet carrier of the second planetary gear set 34 is provided with meshing grooves 343 to form a meshing engagement with the teeth 314. When the meshing grooves 343 mesh with the teeth 314, the key segment 312 of the planet carrier of the first planetary gear set 32 ​​is disengaged from the key engagement with the corresponding planetary gear.

[0092] The planet carrier on the planetary gear set 1 32 is externally connected to a telescopic driving member 36 for driving the planet carrier to move in its axial direction. The sliding rod of the telescopic driving member 36 is fixedly connected to the connecting frame 31 .

[0093] The connecting frame 31 has a cavity 315 formed therein. When the second key segment 331 on the connecting key sleeve 33 forms a key engagement with the fourth key groove 3421 formed on the sun gear of the second planetary gear set 34, and at the same time, the tooth 314 forms an engagement with the meshing groove 343, the key segment of the connecting key sleeve 33 other than the second key segment 331 is located inside the cavity 315, thereby disengaging the connecting key sleeve 33 from the key engagement with the connecting frame 31.

[0094] In order to ensure that the planetary gears attached to the planetary carrier 31 do not move axially when the planetary carrier on the planetary gear set 1 32 moves, it is necessary to install a guard on the ring gear on the planetary gear set 1 32 to provide movement protection for the planetary gears on the planetary gear set 1 32.

[0095] It should be noted that the present invention is a gas generator set with improved stable output. Through the speed change mechanism 3, when the planetary gear set 1 32 is damaged and cannot continue to operate normally, the connecting key sleeve 33 is driven to move by the telescopic driving member 36, so that the connecting key sleeve 33 moves to the key segment 2 331 thereon and forms a key engagement with the key groove 4 3421 of the sun gear on the planetary gear set 2 34. In addition, the telescopic driving member 36 on the connecting frame 31 drives the connecting frame 31 to move, so that the key segment 1 312 on the connecting frame 31 is disengaged from the planetary gear on the planetary gear set 1 32. At the same time, the tooth 314 is engaged with the meshing groove 343 provided on the planetary carrier of the planetary gear set 2 34. This operating state is as follows: Figure 9 As shown;

[0096] In this state, the connection between the input shaft 11 and the sun gear on the planetary gear set 2 34 is formed by the connecting key sleeve 33, and the planet carrier on the planetary gear set 2 34 is connected to the connecting frame 31 through the teeth 314 and the meshing groove 343, so that after the planetary gear set 1 32 is damaged, the input is from the sun gear on the planetary gear set 2 34, and the output is from the planet carrier on the planetary gear set 2 34 to the output shaft 21, forming a normal deceleration process after load unloading.

[0097] It is worth mentioning that by using planetary gear set 2 34 as a spare gear set in planetary gear set 1 32 and planetary gear set 2 34, when planetary gear set 1 32 is damaged under load unloading, the sun gear on planetary gear set 2 34 is connected to the input shaft 11 and the planet carrier on planetary gear set 2 34 is connected to the output shaft 21 by moving the connecting key sleeve 33, directly skipping the transmission interference of planetary gear set 1 32, and directly taking over the power transmission, avoiding chain mechanical damage, and ensuring the power supply continuity for the electrical load. Compared with the existing technology under the same conditions, the operation and maintenance economy and environmental adaptability are higher.

[0098] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the invention as claimed.

Claims

1. A gas generator set with improved stable output, comprising a drive mechanism (1) and a generator (2), characterized in that: It also includes a speed change mechanism (3) disposed between the driving mechanism (1) and the generator (2) and used for transiently reducing the input speed; The speed change mechanism (3) includes a planetary gear set (32). When the speed change mechanism (3) is in a non-speed change state, the sun gear on the planetary gear set (32) rotates synchronously with the planet carrier. When the speed change mechanism (3) is in a speed change state, the ring gear on the planetary gear set (32) is fixed, the sun gear serves as a power input and is connected to the drive mechanism (1), and the planet carrier serves as a power output and is connected to the generator (2).

2. A gas-fired generator set with improved stable output according to claim 1, characterized in that: The planetary gear set (32) is coaxially arranged with the input shaft (11) on the drive mechanism (1) and the output shaft (21) on the generator (2). A connecting key sleeve (33) is also provided on the input shaft (11). The connecting key sleeve (33) is key-connected to the input shaft (11), and the connecting key sleeve (33) is key-connected to the sun gear on the planetary gear set (32). The connecting key sleeve (33) can be key-engaged with the planetary frame on the planetary gear set (32).

3. A gas-fired generator set with improved stable output according to claim 2, characterized in that: The speed change mechanism (3) further includes a second planetary gear set (34), the planet carrier on the second planetary gear set (34) serving as a power input connected to the input shaft (11), and the sun gear on the second planetary gear set (34) serving as a power output externally connected to an energy storage mechanism (4).

4. A gas-fired generator set with improved stable output according to claim 3, characterized in that: The planetary gear set 2 (34) is coaxially arranged with the planetary gear set 1 (32), the input shaft (11), and the output shaft (21), and the planet carrier on the planetary gear set 2 (34) can form a key connection with the connecting key sleeve (33).

5. A gas-fired generator set with improved stable output according to claim 3, characterized in that: The sun gear on the second planetary gear set (34) is connected to an output gear set (35), and the output gear set (35) includes two axially vertically arranged helical gears, one of which is fixedly connected to the sun gear on the second planetary gear set (34), and the other helical gear is fixedly connected to the power input end of the energy storage mechanism (4).

6. A gas-fired generator set with improved stable output according to claim 2, characterized in that: The speed change mechanism (3) further comprises a telescopic driving member (36), and the telescopic driving member (36) is used for driving the connecting key sleeve (33) to move in its axial direction.

7. A gas-fired generator set with improved stable output according to claim 6, characterized in that: The ring gear on the planetary gear set (32) is attached with a locking assembly for fixing the ring gear on the planetary gear set (32) when the speed change mechanism (3) is in the speed change state.

8. A gas-fired generator set with improved stable output according to claim 7, characterized in that: The locking assembly includes at least two telescopic sub-rods (362), and the at least two telescopic sub-rods (362) are symmetrically distributed on the outer side of the ring gear of the planetary gear set (32), and the ends of the sliding rods on the at least two telescopic sub-rods (362) are opposite to the ring gear of the planetary gear set (32).

9. A gas-fired generator set with improved stable output according to claim 8, characterized in that: The locking assembly further comprises a telescopic main rod (361), and at least two telescopic auxiliary rods (362) are connected to the telescopic main rod (361). When the telescopic main rod (361) is compressed, the two telescopic auxiliary rods (362) are driven to extend and engage with the outer wall of the upper gear ring of the planetary gear set (32).

10. A gas-fired generator set with improved stable output according to claim 7, characterized in that: A key segment 2 (331) is provided on the connecting key sleeve (33), and a key groove 4 (3421) is provided on the sun gear of the planetary gear set 2 (34) to form a key engagement with the key segment 2 (331). The planetary carrier on the planetary gear set 1 (32) includes a smooth surface segment (313) and a key segment 1 (312) to form a key engagement with its planetary gear, and a tooth (314) is provided on the planetary carrier. An engagement groove (343) is provided on the planetary carrier of the planetary gear set 2 (34) to form an engagement with the tooth (314). When the engagement groove (343) is engaged with the tooth (314), the key segment 1 (312) of the planetary carrier on the planetary gear set 1 (32) is disengaged from the key engagement with the corresponding planetary gear. The planet carrier on the planetary gear set (32) is externally connected to a telescopic driving member (36) for driving the planet carrier to move based on its axial direction.

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