Generator car grid-connected automatic detection and adjustment system

Abstract

The invention discloses a grid-connected automatic detection and adjustment system for a generator car, and relates to the technical field of power supply equipment. The system comprises a real-time monitoring module at the output end of the generator and an adjusting module of the transformer, and achieves the precise control of the grid-connected output voltage and current. According to the system, the heat dissipation design based on cooling liquid phase change circulation is adopted, a multi-heat-source heat dissipation mechanism of an internal combustion engine negative pressure fan and a gas guide channel is combined, and the heat dissipation efficiency and the equipment operation stability are guaranteed. In addition, by means of the sliding disc transmission design of the internal combustion engine and the generator, optimization of anti-seismic performance and axis alignment is achieved. The planetary gear is controlled through the adjusting motor, stepless transmission ratio adjustment is completed, and the operation efficiency and the adaptive capacity are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of power supply equipment, and in particular to an automatic detection and adjustment system for grid-connected power generation vehicles. Background Art

[0002] At present, most of the power generation vehicles on the market adopt the connection mode of direct series connection between the internal combustion engine and the generator. The output shaft of the internal combustion engine directly drives the input shaft of the generator to rotate to realize the mechanical transmission of energy and the output of electricity. However, this direct series design has many limitations, especially in the adjustment of the transmission ratio and the operation efficiency. First of all, in this design, the speed of the internal combustion engine directly affects the operation state of the generator. Due to the lack of an adjustment mechanism for the intermediate transmission ratio, the internal combustion engine is usually required to operate at a high speed to meet the power demand of the generator. This operation mode causes the internal combustion engine to be in a high load and high 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, since the speed of the internal combustion engine is difficult to adjust flexibly, its operating efficiency cannot be effectively optimized when the load changes, and there is a certain degree of energy waste. At the same time, it does not have a closed-loop control function between the output end and the input shaft of the generator. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a power generation vehicle grid-connected automatic detection and adjustment 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 coil winding inside the generator; the electrical signals of the first voltage sensor, the first current sensor and the temperature sensor are input into the first central processing unit after amplification and filtering, and the first central processing unit controls and adjusts the rotation direction and speed of the motor output shaft through the first execution unit; the output end of the generator is connected to the transformer, the output end of the transformer is grid-connected for 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 into 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 transformer output end.

[0004] Preferably, an evaporator shell is sleeved on the outer surface of the generator, and hollow heat sinks are fixed on the evaporator shell. The interiors of the evaporator shell and the hollow heat sinks are both hollow, and coolant is arranged inside the evaporator shell. At the same time, a negative pressure is arranged inside the evaporator shell. A heat sink ring is arranged at the position where the inner wall of the evaporator shell contacts the generator, so as to increase the contact area with the coolant.

[0005] Preferably, a supporting shell is fixed on the outside of the evaporating shell, an adjusting shell is fixed on the end face of the supporting shell, at least one adjusting part is arranged inside the adjusting shell, and more than two adjusting parts need to be arranged in series transmission, that is, the central gear in the first adjusting part is fixedly and synchronously transmitted with the output disk in the second adjusting part.

[0006] Preferably, the adjustment part includes a partition support plate fixed to the inner wall of the adjustment shell, a planetary gear support plate is rotatably mounted on the partition support plate, the side of the planetary gear support plate is coaxially rotatably matched with an output gear ring, a central gear rotatably matched with the planetary gear support plate is coaxially arranged at the center of the circle inside the output gear ring, the central gear and the output gear ring are meshed and driven by at least two planetary gears, and all the planetary gears are rotatably mounted on the planetary gear support plate.

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

[0008] Preferably, a worm is rotatably mounted on the partition support plate, and the worm is threadedly matched with the worm wheel. An adjusting motor is fixed on each partition support plate, and the output shaft of the adjusting motor is fixedly matched with the worm.

[0009] Preferably, an internal combustion engine soundproof shell is fixedly mounted on the adjustment shell, the interior of the internal combustion engine soundproof shell is elastically mounted on the internal combustion engine bracket through a shock absorbing assembly, an internal combustion engine is fixed on the internal combustion engine bracket, an active sliding disk is fixed on the output shaft of the internal combustion engine, and a heat dissipation driving negative pressure fan is coaxially fixed on the active sliding disk; a driven sliding disk is rotatably mounted on a side of the partition support plate away from the planetary gear support disk in one of the adjustment parts, the driven sliding disk and the central gear in the corresponding adjustment part are fixed and synchronously driven through a rotating shaft, and the driven sliding disk and the active sliding disk are synchronously driven through an intermediate sliding disk. The sliding paths of the active sliding disk and the intermediate sliding disk pass through the center of the active sliding disk, the sliding directions of the intermediate sliding disk and the driven sliding disk pass through the center of the driven sliding disk, and the sliding paths of the intermediate sliding disk and the active sliding disk are arranged perpendicular to the sliding paths of the intermediate sliding disk and the driven sliding disk.

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

[0011] Preferably, a gas guiding channel is fixed to the sound insulation shell of the internal combustion engine at the position of the air inlet through the air inlet connecting nozzle, and one end of the gas guiding channel away from the air inlet is aligned with the hollow heat sink.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention monitors and adjusts the generator and transformer in real time through the first and second central processing units, can accurately adjust the speed and rotation direction of the generator input shaft, and control the voltage and current parameters of the transformer output. Through monitoring and adjustment, the stability of the grid-connected output is ensured and the quality of electric energy is improved; (2) The design of the evaporator shell and the hollow heat sink of the present invention effectively absorbs and quickly dissipates the heat generated by the generator by utilizing the phase change cycle of the coolant. At the same time, through the synergistic effect of the internal combustion engine driving the negative pressure fan, the air circulation efficiency is enhanced and the reliability of the heat dissipation system is ensured. This heat dissipation method not only improves the heat exchange efficiency, but also reduces the operating temperature of the system and prolongs the service life of the equipment; (3) The present invention adopts heat dissipation paths of different heat sources (generator and internal combustion engine) and combines the gas guide channel to optimize the heat dissipation effect. Through the active heat dissipation and air guidance technology of the negative pressure fan, the equipment is ensured to maintain a stable temperature under high-load operation, thereby improving the reliability and safety of the overall system; (4) The present invention sets a regulating unit between the internal combustion engine and the generator, and reduces the rotation speed of the internal combustion engine and reduces the mechanical wear of the internal combustion engine by adjusting the transmission ratio between the two. At the same time, it also realizes closed-loop control between the output end and the input shaft during the generator grid-connected power generation process, thereby ensuring the stability and reliability of the output grid-connected voltage and current. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the power generation grid-connected system of the present invention.

[0014] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 3 It is a schematic structural diagram of the internal combustion engine of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of the evaporation shell of the present invention.

[0017] Figure 5 It is a schematic diagram of the structure of the adjustment part of the present invention.

[0018] Figure 6 It is a schematic diagram of the structure of the output disk surface of the present invention.

[0019] Figure 7 It is a schematic diagram of the sliding disk structure of the present invention.

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

[0021] The following is combined with Figure 1-7 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0022] The present invention provides a grid-connected automatic detection and adjustment system for a power generation vehicle, comprising a first voltage sensor and a first current sensor arranged at an output end of a generator 105, and a temperature sensor arranged on a coil winding inside the generator 105; electrical signals of the first voltage sensor, the first current sensor and the temperature sensor are input into a first central processing unit after being amplified and filtered, and the first central processing unit controls and adjusts the rotation direction and speed of an output shaft of a motor 108 through a first execution unit; the output end of the generator 105 is connected to a transformer, the output end of the transformer is grid-connected for output, and a second voltage sensor and a second current sensor are arranged at the output end of the transformer, wherein electrical signals of the second voltage sensor and the second current sensor are input into a second central processing unit after being amplified and filtered, and the second central processing unit adjusts the transformer through a second execution unit, so as to realize monitoring of the grid-connected output voltage and current of the output end of the transformer.

[0023] The outer surface of the generator 105 is sleeved with an evaporation shell 102, and a hollow heat sink 103 is fixed on the evaporation shell 102. The evaporation shell 102 and the hollow heat sink 103 are both hollow, and a coolant is arranged inside the evaporation shell 102. At the same time, a negative pressure is arranged inside the evaporation shell 102. A heat sink ring 104 is arranged at the position where the inner wall of the evaporation shell 102 contacts the generator 105, so as to increase the contact area with the coolant. A support shell 101 is fixed on the outer side of the evaporation shell 102, and an adjustment shell 106 is fixed on the end face of the support shell 101. At least one adjustment part is arranged inside the adjustment shell 106, and more than two adjustment parts need to be arranged in series transmission, that is, the central gear 115 in the first adjustment part is fixedly and synchronously transmitted with the output disk 111 in the second adjustment part.

[0024] The adjustment part includes a partition support plate 107 fixed to the inner wall of the adjustment housing 106, a planetary gear support disk 114 is rotatably mounted on the partition support plate 107, an output gear ring 113 is coaxially rotatably matched on the side of the planetary gear support disk 114, a central gear 115 rotatably matched with the planetary gear support disk 114 is coaxially arranged at the center of the circle inside the output gear ring 113, and the central gear 115 and the output gear ring 113 are meshed and transmitted through at least two planetary gears 112, and all the planetary gears 112 are rotatably mounted on the planetary gear support disk 114. A worm gear 110 is fixed on the outer circumferential surface of the planetary gear support disk 114, an output disk surface 111 is fixed on the side of the output gear ring 113, and the worm gear 110 is rotatably sleeved on the outer circumferential surfaces of the output gear ring 113 and the output disk surface 111, wherein the output disk surface 111 is fixedly matched with the input shaft of the generator 105, and is used to drive the input shaft of the generator 105 to rotate. A worm 109 is also rotatably mounted on the partition support plate 107 , and the worm 109 is threadedly matched with the worm wheel 110 . An adjustment motor 108 is fixed on each partition support plate 107 , and the output shaft of the adjustment motor 108 is fixedly matched with the worm 109 .

[0025] An internal combustion engine sound insulation shell 120 is fixedly installed on the adjustment shell 106, and the interior of the internal combustion engine sound insulation shell 120 is elastically installed on the internal combustion engine bracket 124 through a shock absorbing component 123, and an internal combustion engine 122 is fixed on the internal combustion engine bracket 124, and an active sliding disk 118 is fixed on the output shaft of the internal combustion engine 122, and a heat dissipation driving negative pressure fan 119 is coaxially fixed on the active sliding disk 118; a driven sliding disk 116 is rotatably installed on the side of the partition support plate 107 in one of the adjustment parts away from the planetary gear support disk 114, and the driven sliding disk 116 and the central gear 115 in the corresponding adjustment part are fixedly synchronously driven through a rotating shaft, and the driven sliding disk 116 and the active sliding disk 118 are synchronously driven through an intermediate sliding disk 117. The sliding paths of the active sliding disk 118 and the intermediate sliding disk 117 pass through the center of the active sliding disk 118, the sliding directions of the intermediate sliding disk 117 and the driven sliding disk 116 pass through the center of the driven sliding disk 116, and the sliding paths of the intermediate sliding disk 117 and the active sliding disk 118 are arranged perpendicular to the sliding paths of the intermediate sliding disk 117 and the driven sliding disk 116. A plurality of heat dissipation holes 121 are provided on the end of the internal combustion engine soundproof shell 120 away from the adjustment shell 106, and an air inlet 125 is provided on the side of the internal combustion engine soundproof 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 drive negative pressure fan 119. A gas guide channel 126 is fixed to the position of the internal combustion engine soundproof shell 120 at the air inlet 125 through the air inlet connection nozzle 127, and the end of the gas guide channel 126 away from the air inlet 125 is aligned with the hollow heat sink 103.

[0026] The working principle of the automatic detection and adjustment system for grid-connected power generation vehicle disclosed in the present invention is as follows: the temperature sensor is used to monitor the heat of the generator 105. When the heat of the generator 105 is too high, the input shaft speed of the generator 105 is controlled to be reduced to ensure that the generator 105 will not be damaged. Specifically, the internal combustion engine 122 is started, and the output shaft of the internal combustion engine 122 drives the active sliding disk 118 to rotate, the active sliding disk 118 drives the driven sliding disk 116 to rotate through the intermediate sliding disk 117, and the driven sliding disk 116 drives the central gear 115 to rotate. The central gear 115 drives the output gear ring 113 to rotate through the planetary gear 112, and the output gear ring 113 rotates and drives the output disk surface 111 to rotate. The output disk surface 111 rotates and drives the input shaft of the generator 105 to rotate. When there are multiple adjustment parts, the output disk surface 111 in the first adjustment part drives the central gear 115 in the second adjustment part to rotate, and so on. The output disk surface 111 in the last adjustment part drives the input shaft of the generator 105 to rotate. During the operation of the internal combustion engine 122, the shock absorbing assembly 123 can absorb part of the vibration generated by the operation of the internal combustion engine 122. This process will cause the output shaft of the internal combustion engine 122 and the axis of the central gear 115 to offset. At this time, the intermediate sliding plate 117 can compensate for the offset to ensure synchronous transmission of the two. When the adjusting motor 108 is not started, the worm 109 cannot rotate driven by the worm wheel 110, so the worm wheel 110 cannot rotate, forming a self-locking and synchronous state. Since the worm wheel 110 is fixed to the planetary gear support disk 114, the planetary gear support disk 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. Therefore, when the planetary gear 112 can revolve, the transmission ratio will change. Therefore, by controlling the rotation direction and speed of the output shaft of the adjusting motor 108, the revolution direction and speed of the planetary gear 112 (corresponding to the worm wheel 110 and the planetary gear support disk 114) can be controlled, thereby steplessly 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 adjusting motor 108 are electronically controlled.

[0027] At the same time, the generator 105 generates a large amount of heat when it is working and generating electricity. The heat will be transferred to the heat dissipation ring 104. The heat dissipation ring 104 transfers the heat to the coolant inside the evaporation shell 102 (generally a fluorinated liquid with a low boiling point). The coolant then evaporates. Under the action of buoyancy, the gaseous coolant condenses on the hollow heat sink 103, and then falls into the evaporation shell 102 under the action of gravity, continuing to absorb the heat generated by the generator 105, and the cycle repeats. When the gaseous coolant condenses on the hollow heat sink 103, it will heat the hollow heat sink 103. Therefore, in order to ensure the efficiency of condensation, that is, the temperature difference, the hollow heat sink 103 needs to be cooled. At the same time, the internal combustion engine 122 will also generate a large amount of heat, and the internal combustion engine 122 also needs to be cooled. At this time, the heat dissipation driven negative pressure fan 119 fixed on the output shaft of the internal combustion engine 122 will drive the air flow, so that the air pressure between the partition support plate 107 and the heat dissipation driven negative pressure fan 119 is reduced, and the air is guided to blow toward the internal combustion engine 122, thereby dissipating the heat of the internal combustion engine 122 itself, and then 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 reduced, the air pressure inside the gas guide channel 126 will also be reduced. At this time, the external cold air will pass through the hollow heat sink 103 into the gas guide channel 126, and then enter between the partition support plate 107 and the heat dissipation driven negative pressure fan 119. In this process, the external cold air will dissipate the heat of the hollow heat sink 103, and then dissipate the heat of the internal combustion engine 122 through the gas guide channel 126 and the heat dissipation driven negative pressure fan 119.

Claims

1. A power generation vehicle grid-connected automatic detection and adjustment system, characterized in that: It comprises a first voltage sensor and a first current sensor arranged at the output end of the generator (105), and a temperature sensor arranged on the internal coil winding of the generator (105); The electrical signals of the first voltage sensor, the first current sensor and the temperature sensor are input into the first central processing unit after being amplified and filtered, and the first central processing unit controls and adjusts the rotation direction and speed of the output shaft of the motor (108) through the first execution unit; The output end of the generator (105) is connected to a transformer, the output end of the transformer is connected to the grid for 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 being amplified and filtered, and the second central processing unit adjusts the transformer through the second execution unit to realize monitoring of the grid-connected output voltage and current of the transformer output end.

2. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 1, characterized in that: An evaporation shell (102) is sleeved on the outer surface of the generator (105), a hollow heat sink (103) is fixed on the evaporation shell (102), the interior of the evaporation shell (102) and the hollow heat sink (103) are both hollow, and a coolant is provided inside the evaporation shell (102). Meanwhile, a negative pressure is provided inside the evaporation shell (102), and a heat sink ring (104) is provided at a position where the inner wall of the evaporation shell (102) contacts the generator (105) to increase the contact area with the coolant.

3. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 2 is characterized in that: A support shell (101) is fixed on the outside of the evaporation shell (102), an adjustment shell (106) is fixed on the end surface of the support shell (101), at least one adjustment part is arranged inside the adjustment shell (106), and two or more adjustment parts need to be arranged in series transmission, that is, the central gear (115) in the first adjustment part and the output disk surface (111) in the second adjustment part are fixed and synchronously transmitted.

4. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 3 is characterized in that: The adjustment portion comprises a partition support plate (107) fixed to the inner wall of the adjustment housing (106); a planetary gear support disc (114) is rotatably mounted on the partition support plate (107); an output gear ring (113) is coaxially rotatably mounted on the side surface of the planetary gear support disc (114); a central gear (115) rotatably mounted with the planetary gear support disc (114) is coaxially arranged at the center of the circle inside the output gear ring (113); the central 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 mounted on the planetary gear support disc (114).

5. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 4 is characterized in that: A worm wheel (110) is fixed on the outer circumferential surface of the planetary gear support disk (114), an output disk surface (111) is fixed on the side of the output gear ring (113), and the worm wheel (110) is rotatably sleeved on the outer circumferential surfaces of the output gear ring (113) and the output disk surface (111), wherein the output disk surface (111) is fixedly matched with the input shaft of the generator (105) and is used to drive the input shaft of the generator (105) to rotate.

6. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 5, characterized in that: A worm (109) is also rotatably mounted on the partition support plate (107), and the worm (109) and the worm wheel (110) are threadedly matched. An adjustment motor (108) is fixed on each partition support plate (107), and an output shaft of the adjustment motor (108) is fixedly matched with the worm (109).

7. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 6, characterized in that: An internal combustion engine soundproofing shell (120) is fixedly mounted on the adjustment housing (106); the interior of the internal combustion engine soundproofing shell (120) is elastically mounted on an internal combustion engine bracket (124) via a shock absorbing assembly (123); an internal combustion engine (122) is fixed on the internal combustion engine bracket (124); an active sliding disk (118) is fixed on the output shaft of the internal combustion engine (122); a heat dissipation driving negative pressure fan (119) is coaxially fixed on the active sliding disk (118); a driven sliding disk (116) is rotatably mounted on a side of a partition support plate (107) in one of the adjustment parts away from the planetary gear support disk (114); the driven sliding disk (116) and the central gear (115) in the corresponding adjustment part are fixedly synchronously driven via a rotating shaft; the driven sliding disk (116) and the active sliding disk (118) are synchronously driven via an intermediate sliding disk (117). The sliding paths of the active sliding disk (118) and the intermediate sliding disk (117) pass through the center of the active sliding disk (118), the sliding directions of the intermediate sliding disk (117) and the driven sliding disk (116) pass through the center of the driven sliding disk (116), and the sliding paths of the intermediate sliding disk (117) and the active sliding disk (118) are arranged perpendicular to the sliding paths of the intermediate sliding disk (117) and the driven sliding disk (116).

8. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 7, characterized in that: A plurality of heat dissipation holes (121) are provided on one end of the internal combustion engine sound insulation shell (120) away from the regulating shell (106), and an air inlet (125) is provided on a 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).

9. The automatic detection and adjustment system for grid connection of a power generation vehicle according to claim 8, characterized in that: The internal combustion engine sound insulation shell (120) is located at the position of the air inlet (125) and is fixed with a gas guide channel (126) through an air inlet connecting nozzle (127); one end of the gas guide channel (126) away from the air inlet (125) is aligned with the hollow heat sink (103).

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