A power generation vehicle grid-connected automatic detection and regulation system

Abstract

The application discloses a kind of power generation car grid-connected automatic detection and adjusting system, it is related to power supply equipment technical field.The application includes real-time monitoring module of generator output end and adjusting module of transformer, and the accurate control of grid-connected output voltage and current is realized.System uses the heat dissipation design based on cooling liquid phase change cycle, and combines the multi-heat-source heat dissipation mechanism of internal combustion engine negative pressure fan and gas guide channel, guarantees the stability of heat dissipation efficiency and equipment operation.In addition, through the sliding disc transmission design of internal combustion engine and generator, the optimization of anti-vibration performance and axis alignment is realized;Through adjusting motor control planetary gear, stepless transmission ratio adjustment is completed, and the operation efficiency and adaptability are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply equipment, in particular to a power generation vehicle grid-connected automatic detection and regulation system. BACKGROUND

[0002] Most of the power generation vehicles on the market currently adopt a connection mode of directly connecting internal combustion engines and generators in series. The output shaft of the internal combustion engine directly drives the input shaft of the generator to rotate, so as to realize mechanical transmission of energy and output of electric power. However, this direct series design has many limitations, especially obvious defects in the adjustment of transmission ratio and operating efficiency. First of all, in this design, the rotation speed of the internal combustion engine directly affects the operating state of the generator, and due to the lack of adjustment mechanism of intermediate transmission ratio, the internal combustion engine is usually required to operate at a high rotation speed to meet the power demand of the generator. This operating mode causes the internal combustion engine to be in a high load and high rotation speed state for a long time, which not only aggravates the wear of mechanical parts, but also significantly reduces the service life of the equipment. In addition, due to the difficulty in flexible adjustment of the rotation speed of the internal combustion engine, its operating efficiency cannot be effectively optimized when the load changes, resulting in a certain degree of energy waste. At the same time, it also does not have the closed-loop control function between the output end of the generator and the input shaft. SUMMARY

[0003] In order to overcome the defects of the prior art, the present application provides the following technical scheme: a power generation vehicle grid-connected automatic detection and regulation system, comprising a first voltage sensor and a first current sensor arranged at the output end of the generator, and a temperature sensor arranged on the internal coil winding of the generator; the electrical signals of the first voltage sensor, the first current sensor and the temperature sensor are input to a first central processing unit after amplification and filtering, and the first central processing unit controls the rotation direction and rotation speed of the output shaft of the adjusting motor through a first execution unit; the output end of the generator is connected with a transformer, the output end of the transformer is grid-connected output, and the output end of the transformer is provided with a second voltage sensor and a second current sensor, wherein the electrical signals of the second voltage sensor and the second current sensor are input to a second central processing unit after amplification and filtering, and the second central processing unit adjusts the transformer through a second execution unit to realize monitoring of the grid-connected output voltage and current of the output end of the transformer.

[0004] Preferably, an evaporation shell is sleeved on the outer surface of the generator, hollow cooling fins are fixed on the evaporation shell, the evaporation shell and the hollow cooling fins are both hollow, the evaporation shell is provided with cooling liquid, the evaporation shell is provided with negative pressure, and the evaporation shell is provided with heat dissipation ring pieces at the positions in contact with the generator, so as to increase the contact area with the cooling liquid.

[0005] Preferably, a support shell is fixed outside the evaporation shell, an adjusting shell is fixed on the end face of the support shell, at least one adjusting part is arranged inside the adjusting shell, and the first and the second adjusting parts are arranged in series.

[0006] Preferably, the adjusting part comprises a separation support plate fixed on the inner wall of the adjusting shell, a planetary gear support plate is rotatably installed on the separation support plate, an output gear ring is coaxially and rotatably matched with the side face of the planetary gear support plate, a sun gear coaxially arranged at the center of the inner part of the output gear ring is rotatably matched with the planetary gear support plate, the sun gear and the output gear ring are in meshing transmission through at least two planetary gears, and all the planetary gears are rotatably installed on the planetary gear support plate.

[0007] Preferably, a worm wheel is fixed on the outer circumferential surface of the planetary gear support plate, an output disc surface is fixed on the side face of the output gear ring, the worm wheel is rotatably sleeved on the outer circumferential surface of the output gear ring and the output disc surface, the output disc surface is fixedly matched with the input shaft of the generator, and the output disc surface is used to drive the input shaft of the generator to rotate.

[0008] Preferably, a worm is also rotatably installed on the separation support plate, the worm is in threaded transmission cooperation with the worm wheel, an adjusting motor is fixed on each separation support plate, and the output shaft of the adjusting motor is fixedly matched with the worm.

[0009] Preferably, an internal combustion engine sound insulation shell is fixedly installed on the adjusting shell, the internal combustion engine sound insulation shell is elastically installed in an internal combustion engine support through a damping assembly, an internal combustion engine is fixed on the internal combustion engine support, a driving sliding disc is fixed on the output shaft of the internal combustion engine, and a heat dissipation driving negative pressure fan is coaxially fixed on the driving sliding disc; a driven sliding disc is rotatably installed on the side of the separation support plate away from the planetary gear support plate in one adjusting part, the driven sliding disc is in synchronous transmission cooperation with the sun gear in the corresponding adjusting part through a rotating shaft, and the driven sliding disc and the driving sliding disc are in synchronous transmission cooperation through an intermediate sliding disc. The sliding path of the driving sliding disc and the intermediate sliding disc passes through the center of the driving sliding disc, the sliding direction of the intermediate sliding disc and the driven sliding disc passes through the center of the driven sliding disc, and the sliding path of the intermediate sliding disc and the driving sliding disc is arranged perpendicularly to the sliding path of the intermediate sliding disc and the driven sliding disc.

[0010] Preferably, a plurality of heat dissipation holes are arranged at the end of the internal combustion engine sound insulation shell away from the adjusting shell, and an air inlet is arranged on the side of the internal combustion engine sound insulation shell close to the separation support plate, wherein the air inlet is located between the separation support plate and the heat dissipation driving negative pressure fan.

[0011] Preferably, a gas guiding channel is fixed on the internal combustion engine sound insulation shell through an air inlet connecting nozzle at the position of the air inlet, and the end of the gas guiding channel away from the air inlet is arranged in alignment with the hollow heat dissipation fin.

[0012] Compared with the prior art, the present application has the following advantages: (1) The present application can accurately adjust the speed and direction of the input shaft of the generator and control the voltage and current parameters of the output end of the transformer through real-time monitoring and adjustment of the generator and the transformer by the first and second central processing units. Through monitoring and adjustment, the stability of the grid-connected output is ensured, and the power quality is improved; (2) The design of the evaporation shell and the hollow cooling fin effectively absorbs and quickly dissipates the heat generated by the generator by utilizing the phase change cycle of the cooling liquid. At the same time, through the synergistic effect of the negative pressure fan driven by the internal combustion engine, the air circulation efficiency is enhanced, and the reliability of the cooling system is ensured. This cooling method not only improves the heat exchange efficiency, but also reduces the operating temperature of the system, prolonging the service life of the equipment; (3) The present application adopts different heat dissipation paths for different heat sources (generator and internal combustion engine) and optimizes the cooling effect by combining gas guiding channels. Through the active cooling of the negative pressure fan and the air guiding technology, the equipment can maintain a stable temperature under high load operation, improving the reliability and safety of the overall system; (4) The present application sets an adjustment part between the internal combustion engine and the generator, which reduces the speed of the internal combustion engine by adjusting the transmission ratio between the two, slows down the mechanical wear of the internal combustion engine, and also realizes closed-loop control between the output end and the input shaft during the generator grid-connected power generation process, ensuring the stability and reliability of the output grid-connected voltage and current. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The present application is a power generation and grid-connected system schematic diagram.

[0014] Figure 2 The present application is a whole structure schematic diagram.

[0015] Figure 3 The present application is an internal combustion engine structure schematic diagram.

[0016] Figure 4 The present application is an evaporation shell structure schematic diagram.

[0017] Figure 5 The present application is an adjustment part structure schematic diagram.

[0018] Figure 6 The present application is an output disc surface structure schematic diagram.

[0019] Figure 7 The present application is a sliding disc structure schematic diagram.

[0020] In the figure: 101 - support shell; 102 - evaporation shell; 103 - hollow heat sink; 104 - heat dissipation ring piece; 105 - generator; 106 - adjusting shell; 107 - partition support plate; 108 - adjusting motor; 109 - worm; 110 - worm gear; 111 - output disc surface; 112 - planetary gear; 113 - output gear ring; 114 - planetary gear support disc; 115 - central gear; 116 - driven sliding disc; 117 - intermediate sliding disc; 118 - driving sliding disc; 119 - heat dissipation driven negative pressure fan; 120 - internal combustion engine sound insulation shell; 121 - heat dissipation hole; 122 - internal combustion engine; 123 - damping assembly; 124 - internal combustion engine support; 125 - air inlet; 126 - gas guide channel; 127 - air inlet connecting nozzle. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be further described below in combination with the accompanying drawings. Figures 1-7 The technical solutions of the present application will be further described below in combination with the accompanying drawings.

[0022] The present application provides a kind of power generation car and grid-connected automatic detection and adjusting system, including the first voltage sensor and first current sensor of being arranged in the output end of generator 105, and temperature sensor is arranged on the coil winding in generator 105;The electric signal of first voltage sensor, first current sensor and temperature sensor is input to first central processing unit after amplification filtering, and the rotating direction and rotational speed of the output shaft of adjusting motor 108 are controlled by first central processing unit through first execution unit;The output end of generator 105 is connected with transformer, the output end of transformer carries out grid-connected output, and the output end of transformer is provided with second voltage sensor and second current sensor, wherein the electric signal of second voltage sensor and second current sensor is input to second central processing unit after amplification filtering, and second central processing unit adjusts transformer through second execution unit, realizes the monitoring of grid-connected output voltage and current of the output end of transformer.

[0023] The outer surface of generator 105 is sleeved with evaporation shell 102, hollow heat sink 103 is fixed on evaporation shell 102, hollow is arranged in evaporation shell 102 and hollow heat sink 103, and cooling liquid is arranged in evaporation shell 102, and the position of evaporation shell 102 inner wall and generator 105 contact is provided with heat dissipation ring piece 104, for increasing the contact area with cooling liquid.Evaporation shell 102 is fixed on the outer side of support shell 101, adjusting shell 106 is fixed on the end face of support shell 101, at least one adjusting part is arranged in adjusting shell 106, and the first position series transmission of more than two adjusting parts is required, i.e. the central gear 115 in the first adjusting part is fixed and synchronous with the output disc surface 111 in the second adjusting part Transmission.

[0024] The adjusting part comprises a partition support plate 107 fixed to the inner wall of the adjusting shell 106, a planetary gear support disc 114 rotatably installed on the partition support plate 107, an output gear ring 113 coaxially and rotatably matched with the side surface of the planetary gear support disc 114, a central gear 115 coaxially arranged at the center of the inside of the output gear ring 113 and rotatably matched with the planetary gear support disc 114, and at least two planetary gears 112 meshingly and drivingly arranged between the central gear 115 and the output gear ring 113, all of which are rotatably installed on the planetary gear support disc 114. A worm wheel 110 is fixed to the outer circumferential surface of the planetary gear support disc 114, and an output disc surface 111 is fixed to the side surface of the output gear ring 113, and the worm wheel 110 is rotatably sleeved on the outer circumferential surface of the output gear ring 113 and the output disc surface 111, wherein the output disc surface 111 is fixedly matched with the input shaft of the generator 105 and used to drive the input shaft of the generator 105 to rotate. A worm 109 is also rotatably installed on the partition support plate 107, and the worm 109 is threadedly and drivingly matched with the worm wheel 110. An adjusting motor 108 is fixed to each partition support plate 107, and the output shaft of the adjusting motor 108 is fixedly matched with the worm 109.

[0025] The adjusting shell 106 is fixedly installed with an internal combustion engine sound insulation shell 120, the internal combustion engine sound insulation shell 120 is elastically installed in an internal combustion engine support 124 through a damping assembly 123, the internal combustion engine support 124 is fixed with an internal combustion engine 122, the output shaft of the internal combustion engine 122 is fixed with a driving sliding disc 118, and the driving sliding disc 118 is coaxially fixed with a heat dissipation driving negative pressure fan 119; one side of the partition support plate 107 away from the planetary gear support disc 114 in one adjusting part is rotatably installed with a driven sliding disc 116, the driven sliding disc 116 is fixedly and synchronously driven with the central gear 115 in the corresponding adjusting part through a rotating shaft, and the driven sliding disc 116 and the driving sliding disc 118 are synchronously and drivingly matched through an intermediate sliding disc 117. The sliding path of the driving sliding disc 118 and the intermediate sliding disc 117 passes through the center of the driving sliding disc 118, the sliding direction of the intermediate sliding disc 117 and the driven sliding disc 116 passes through the center of the driven sliding disc 116, and the sliding path of the intermediate sliding disc 117 and the driving sliding disc 118 is perpendicularly arranged with the sliding path of the intermediate sliding disc 117 and the driven sliding disc 116. A plurality of heat dissipation holes 121 are formed at the end of the internal combustion engine sound insulation shell 120 away from the adjusting shell 106, and an air inlet 125 is formed on the side of the internal combustion engine sound insulation shell 120 close to the partition support plate 107, wherein the air inlet 125 is located between the partition support plate 107 and the heat dissipation driving negative pressure fan 119. The position of the internal combustion engine sound insulation shell 120 at the air inlet 125 is fixed with a gas guiding channel 126 through an air inlet connecting mouth 127, and the end of the gas guiding channel 126 away from the air inlet 125 is aligned with the hollow heat dissipation fin 103.

[0026] The working principle of the disclosed power generation vehicle grid-connected automatic detection and adjustment system is as follows: the temperature sensor is used to monitor the heat of the generator 105, and when the heat of the generator 105 is too high, the input shaft rotation speed of the generator 105 is reduced to ensure that the generator 105 will not be damaged. Specifically, start the internal combustion engine 122, the output shaft of the internal combustion engine 122 drives the driving sliding disc 118 to rotate, the driving sliding disc 118 drives the driven sliding disc 116 to rotate through the intermediate sliding disc 117, the driven sliding disc 116 drives the center gear 115 to rotate, the center gear 115 drives the output gear ring 113 to rotate through the planetary gear 112, the output gear ring 113 rotates to drive the output disc surface 111 to rotate, the output disc surface 111 rotates to drive the input shaft of the generator 105 to rotate, when there are multiple adjustment parts, the output disc surface 111 in the first adjustment part drives the center gear 115 in the second adjustment part to rotate, and so on, the output disc surface 111 in the last adjustment part drives the input shaft of the generator 105 to rotate. The damping assembly 123 can absorb part of the vibration generated by the operation of the internal combustion engine 122 during the operation of the internal combustion engine 122, which will cause the output shaft of the internal combustion engine 122 to deviate from the axis of the center gear 115, at this time, the deviation can be compensated and offset through the intermediate sliding disc 117, to ensure the synchronous transmission of the two. When the adjustment motor 108 is not started, the worm 109 cannot rotate under the drive of the worm wheel 110, so the worm wheel 110 cannot rotate, forming self-locking. Since the worm wheel 110 and the planetary gear support disc 114 are fixed, the planetary gear support disc 114 cannot rotate, so the planetary gear 112 cannot revolve. At this time, the transmission ratio between the center gear 115 and the output gear ring 113 is fixed, so when the planetary gear 112 can revolve, the transmission ratio will change, so by controlling the rotation direction and speed of the output shaft of the adjustment motor 108, the revolution direction and speed of the planetary gear 112 (corresponding to the worm wheel 110 and the planetary gear support disc 114) can be controlled, thereby infinitely controlling the transmission ratio between the center gear 115 and the output gear ring 113. This is because the rotation speed and direction of the adjustment motor 108 are electrically controlled.

[0027] At the same time, the generator 105 will produce a large amount of heat when working, and the heat will be transferred to the heat dissipation ring piece 104, which will transfer the heat to the cooling liquid inside the evaporation shell 102 (usually fluorinated liquid with low boiling point), and then the cooling liquid evaporates, and the gaseous cooling liquid will condense on the hollow heat dissipation fin 103 under the action of buoyancy, and then fall into the evaporation shell 102 under the action of gravity, continue to absorb the heat generated by the generator 105, and so on. When the gaseous cooling liquid condenses on the hollow heat dissipation fin 103, it will heat the hollow heat dissipation fin 103, so in order to ensure the condensation efficiency, that is, the temperature difference, the hollow heat dissipation fin 103 needs to be cooled, and the internal combustion engine 122 also needs to be cooled when working, at this time the heat dissipation driven negative pressure fan 119 fixed on the output shaft of the internal combustion engine 122 will drive air flow, so that the air pressure between the partition support plate 107 and the heat dissipation driven negative pressure fan 119 is lowered, and the heated hot air will be discharged to the outside of the internal combustion engine sound insulation shell 120 through the heat dissipation hole 121. Because the air pressure between the partition support plate 107 and the heat dissipation driven negative pressure fan 119 is lowered, the air pressure in the gas guiding channel 126 will also be lowered, at this time the external cold air will enter the gas guiding channel 126 through the hollow heat dissipation fin 103, and then enter between the partition support plate 107 and the heat dissipation driven negative pressure fan 119. During this process, the external cold air will cool the hollow heat dissipation fin 103, and then cool the internal combustion engine 122 through the gas guiding channel 126 and the heat dissipation driven negative pressure fan 119.

Claims

1. A power generation vehicle grid-tie automatic detection and regulation system, characterized by: The first voltage sensor and the first current sensor are arranged at the output end of the generator (105), and the temperature sensor is arranged on the coil winding inside the generator (105); The electrical signals of the first voltage sensor, the first current sensor and the temperature sensor are input to the first central processing unit after amplification and filtering, and the first central processing unit controls the rotating direction and rotating speed of the output shaft of the adjusting motor (108) through the first execution unit; The output end of the generator (105) is connected with a transformer, the output end of the transformer is connected with a grid, and the output end of the transformer is provided with a second voltage sensor and a second current sensor, wherein the electrical signals of the second voltage sensor and the second current sensor are input to the second central processing unit after amplification and filtering, and the second central processing unit adjusts the transformer through the second execution unit to realize the monitoring of the grid-connected output voltage and current of the output end of the transformer; The adjusting shell (106) is fixedly installed with an internal combustion engine sound insulation shell (120), the internal combustion engine sound insulation shell (120) is elastically installed in the internal combustion engine support (124) through a damping assembly (123), the internal combustion engine support (124) is fixedly installed with an internal combustion engine (122), the output shaft of the internal combustion engine (122) is fixedly installed with a driving sliding disc (118), and the driving sliding disc (118) is coaxially fixedly installed with a heat dissipation driving negative pressure fan (119); one side of the partition support plate (107) away from the planetary gear support disc (114) in one adjusting part is rotatably installed with a driven sliding disc (116), the driven sliding disc (116) is fixedly and synchronously driven with the central gear (115) in the corresponding adjusting part through a rotating shaft, and the driven sliding disc (116) and the driving sliding disc (118) are synchronously driven and matched through an intermediate sliding disc (117); the sliding path of the driving sliding disc (118) and the intermediate sliding disc (117) passes through the center of the driving sliding disc (118), the sliding direction of the intermediate sliding disc (117) and the driven sliding disc (116) passes through the center of the driven sliding disc (116), and the sliding path of the intermediate sliding disc (117) and the driving sliding disc (118) is vertically arranged with the sliding path of the intermediate sliding disc (117) and the driven sliding disc (116); a plurality of heat dissipation holes (121) are formed in the end of the internal combustion engine sound insulation shell (120) away from the adjusting shell (106), an air inlet (125) is formed in the side of the internal combustion engine sound insulation shell (120) close to the partition support plate (107), and the air inlet (125) is located between the partition support plate (107) and the heat dissipation driving negative pressure fan (119); the position of the internal combustion engine sound insulation shell (120) at the air inlet (125) is fixedly installed with a gas guiding channel (126) through an air inlet connecting mouth (127), and the end of the gas guiding channel (126) away from the air inlet (125) is aligned with the hollow heat dissipation fin (103).

2. The grid-tie automatic detection and regulation system of a power generation vehicle according to claim 1, characterized in that: The outer surface of the generator (105) is sleeved with an evaporation shell (102), the evaporation shell (102) is fixed with a hollow cooling fin (103), the evaporation shell (102) and the hollow cooling fin (103) are both hollow, the evaporation shell (102) is provided with cooling liquid, the evaporation shell (102) is provided with negative pressure, and the evaporation shell (102) is provided with a cooling ring (104) at the position in contact with the generator (105), so as to increase the contact area with the cooling liquid.

3. The grid-tie automatic detection and regulation system of a power generation vehicle according to claim 2, characterized in that: The support shell (101) is fixed on the outer side of the evaporation shell (102), the adjusting shell (106) is fixed on the end face of the support shell (101), at least one adjusting part is arranged in the adjusting shell (106), and more than two adjusting parts are arranged in series.

4. The grid-tied automatic detection and regulation system of a power generation vehicle according to claim 3, characterized in that: The adjusting part comprises a partition support plate (107) fixed on the inner wall of the adjusting shell (106), a planetary gear support disc (114) is rotatably installed on the partition support plate (107), an output gear ring (113) is coaxially rotatably connected to the side surface of the planetary gear support disc (114), a center gear (115) is coaxially arranged at the center of the inner part of the output gear ring (113) and rotatably connected to the planetary gear support disc (114), the center gear (115) and the output gear ring (113) are meshed and driven by at least two planetary gears (112), and all the planetary gears (112) are rotatably installed on the planetary gear support disc (114).

5. The grid-tied automatic detection and regulation system of a power generation vehicle according to claim 4, characterized in that: The outer circumferential surface of the planetary gear support disc (114) is fixed with a worm wheel (110), the side surface of the output gear ring (113) is fixed with an output disc (111), the worm wheel (110) is rotatably sleeved on the outer circumferential surface of the output gear ring (113) and the output disc (111), and the output disc (111) is fixedly connected to the input shaft of the generator (105) for driving the input shaft of the generator (105) to rotate.

6. The grid-tied automatic detection and regulation system of a power generation vehicle according to claim 5, characterized in that: The worm (109) is rotatably installed on the partition support plate (107), the worm (109) is threadedly connected with the worm wheel (110), the adjusting motor (108) is fixed on each partition support plate (107), and the output shaft of the adjusting motor (108) is fixedly connected with the worm (109).

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