A multi-unit electric car automatic grid-connection control system

Abstract

The application discloses a kind of multi-group power generation car automatic grid-connected control system, it is related to power supply equipment technical field.The application is accurately adjusted by multidimensional moving mechanism to realize conducting contact strip in complex environment, adapt to cable droop, angle deviation and multiple conditions.Servo motor driven rotating mechanism and adjusting cylinder cooperate to ensure that power generation car can be quickly connected to grid without accurate positioning, and excess is effectively removed by using air cleaning device, to reduce maintenance cost.The system significantly improves grid-connected efficiency, power supply stability and adaptability, especially in disaster emergency power supply with significant advantages.

Description

Technical Field

[0001] This invention relates to the field of power supply equipment technology, specifically to an automatic grid-connected control system for multiple generator sets. Background Technology

[0002] Existing mobile generator grid-connection systems typically employ fixed conductive devices or manually adjustable conductive equipment. They lack conductive angle optimization capabilities: existing devices mostly use fixed-angle contact, and cable sagging due to gravity or terrain changes can lead to incomplete contact, affecting conductivity. When not in use for extended periods, conductive components are easily covered by dust and leaves, making cleaning difficult and requiring frequent and inefficient manual maintenance. Furthermore, the power generated by the generator cannot be connected to the grid at any point on a powerless cable segment; the generator must be driven to a designated location, resulting in slow grid connection speeds. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: an automatic grid-connected control system for multiple generator sets, comprising a base plate, a bottom displacement frame rotatably mounted at the center of the upper surface of the base plate, two parallel bottom displacement slide rods fixedly mounted on the inner side of the bottom displacement frame, bottom moving blocks slidably mounted on the two bottom displacement slide rods, and a bottom transmission belt for driving the bottom moving blocks to slide on the bottom displacement slide rods is also mounted on the inner side of the bottom displacement frame; wherein a top displacement frame is fixed on the bottom moving blocks, and two symmetrically arranged top displacement slide rods are fixed on the inner side of the top displacement frame. The displacement slide bar is spatially perpendicular to the two bottom displacement slide bars. Top moving blocks are slidably mounted on the two top displacement slide bars. A top transmission belt is installed on the inner side of the top displacement frame to drive the top moving blocks to slide on the top displacement slide bars. A conductive component is installed on the top moving block to transmit all the electrical energy generated by the generator to the power grid. The bottom displacement frame can rotate under the action of the drive component or the cleaning component. The drive component is used to rotate the bottom displacement frame to the required angle to facilitate contact between the conductive component and the transmission cable. The cleaning component is used to remove excess material from the bottom displacement frame and the conductive component.

[0004] Preferably, the conductive component includes multiple conductive contact strips, all of which are slidably mounted on the adjusting crossbeam; wherein the adjusting crossbeam has a recessed groove, and each conductive contact strip is fixed with a stud, which slides in the recessed groove but cannot rotate within it; each stud is threaded with a nut, which is used to fix the conductive contact strip to the adjusting crossbeam.

[0005] Preferably, the conductive component further includes an adjustment base plate fixed to the top moving block, a central swing frame fixed on the adjustment base plate, an overhead frame movably mounted on the central swing frame, wherein the adjustment beam is fixed on the overhead frame, and an adjustment swing arm is movably mounted at the movable connection between the central swing frame and the overhead frame. The adjustment swing arm rotates synchronously with the overhead frame. An adjustment electric cylinder is also movably mounted on the adjustment base plate, and the end of the telescopic rod of the adjustment electric cylinder is movably connected to the adjustment swing arm.

[0006] Preferably, the drive assembly includes an outer ring friction sleeve fixed at the center of the lower surface of the base plate, an outer ring gear disk rotatably mounted on the inner side of the outer ring friction sleeve, the outer ring gear disk being fixedly and synchronously driven with the bottom displacement frame, and a central gear being provided at the center of the inner side of the outer ring gear disk through the meshing of three planetary gears, the three planetary gears being rotatably mounted on a planetary gear support disk, and the planetary gear support disk being rotatably mounted inside the outer ring friction sleeve.

[0007] Preferably, the planetary gear support disk has multiple sliding tracks arranged radially, and each sliding track has a friction magnetic column slidably arranged on it. The friction magnetic column is in frictional engagement with the inner wall of the outer ring friction sleeve. An electromagnet is arranged on the outside of all the friction magnetic columns and is sleeved on the outer ring friction sleeve. A central abutment block that is magnetically engaged with the multiple friction magnetic columns is fixed at the center of the planetary gear support disk.

[0008] Preferably, the two ends of the friction magnetic column are embedded with a first permanent magnet that cooperates with the magnetic force of the central abutment block and a second permanent magnet that cooperates with the magnetic force of the electromagnet.

[0009] Preferably, a servo motor support plate is fixed on the outer ring friction sleeve, a servo motor is fixed on the servo motor support plate, and the output shaft of the servo motor passes through the central stop block and the planetary gear support plate and is fixedly engaged with the central gear.

[0010] Preferably, the lower surface of the base plate is mounted on the drive cone chamber via multiple connecting and supporting air guide plates. An air inlet is provided at the bottom of the drive cone chamber, and a turbine is rotatably mounted inside the air inlet. A passive impeller is provided on the outer side of the connecting and supporting air guide plates. The passive impeller is fixed on a passive impeller support plate, which rotates with the base plate. The passive impeller support plate is also fixedly mounted with the bottom displacement frame.

[0011] Preferably, the drive cone chamber is fixed to the end of the multi-stage telescopic rod, the outermost telescopic cylinder of the multi-stage telescopic rod is fixed to the multi-stage telescopic rod bracket, the multi-stage telescopic rod bracket is rotatably mounted on the swing insulating support frame, the swing insulating support frame is fixed on the auxiliary trolley, and the auxiliary trolley is also fixed with a support top plate for supporting the drive cone chamber.

[0012] Compared with the prior art, the present invention has the following advantages: (1) The present invention achieves horizontal position adjustment of the conductive contact strip through the bottom transmission belt and the top transmission belt, and at the same time uses the adjusting electric cylinder to drive the swing frame to adjust the angle of the contact strip so that it fits the cable surface. In this way, even if the contact position changes due to the cable sagging due to gravity or uneven ground, the contact area can be maximized through real-time adjustment, thereby improving conductivity and reducing power loss; (2) Through the linkage of the turbine and the passive impeller, the present invention can use airflow and centrifugal force to clean the excess on the conductive contact strip and other components. High-speed rotation not only effectively cleans up accumulated leaves and dust, but also reduces the frequency of manual cleaning and reduces maintenance costs; (3) The present invention does not require the generator car to be accurately parked under a specific cable. After the auxiliary cart is roughly positioned, it can be quickly connected to the grid through multi-dimensional adjustments. This flexibility greatly reduces the dependence on operational precision and improves the response speed in emergency power supply; (4) The present invention can connect the power generated by the generator car to the grid at any position of the cable section without power, without having the generator car drive to a designated position, which greatly improves the speed of the generator car's power grid connection. Attached Figure Description

[0013] Figure 1 This is a diagram showing the overall structure and installation of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of the gas turbine section of the present invention.

[0015] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.

[0016] Figure 4 This is a schematic diagram of airflow at the passive impeller of the present invention.

[0017] Figure 5 This is a schematic diagram of the passive impeller support disk of the present invention.

[0018] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B.

[0019] Figure 7 This is a schematic diagram of the structure of the adjustment substrate of the present invention.

[0020] Figure 8 This is a schematic diagram of the structure of the outer ring toothed disc of the present invention.

[0021] Figure 9 This is a schematic diagram of the outer ring friction sleeve structure of the present invention.

[0022] Figure 10 This is a schematic diagram of the structure at the top displacement slide bar of the present invention.

[0023] Figure 11 This is a schematic diagram of the structure of the central abutment block of the present invention.

[0024] Figure 12 This is a schematic diagram of the top displacement frame structure of the present invention.

[0025] In the diagram: 101-Base plate; 102-Outer ring gear plate; 103-Planetary gear; 104-Central gear; 105-Planetary gear support plate; 106-Slide rail; 107-Friction magnetic column; 108-Central stop block; 109-Bottom displacement frame; 110-Bottom displacement slide bar; 111-Bottom moving block; 112-Bottom transmission belt; 113-Top displacement frame; 114-Top displacement slide bar; 115-Top moving block; 116-Top transmission belt; 117-Outer ring friction sleeve; 118-Electromagnet; 119-Servo motor support plate; 120 - Servo motor; 121 - Adjustment base plate; 122 - Central swing frame; 123 - Passive impeller support plate; 124 - Passive impeller; 125 - Overhead frame; 126 - Adjustment electric cylinder; 127 - Adjustment swing arm; 128 - Adjustment crossbeam; 129 - Conductive contact strip; 130 - Recessed slide groove; 131 - Drive cone chamber; 132 - Gas turbine; 133 - Nut; 134 - Stud; 135 - Multi-stage telescopic rod; 136 - Multi-stage telescopic rod bracket; 137 - Swing insulating support frame; 138 - Auxiliary trolley; 139 - Support top plate; 140 - Connecting support air guide plate. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-12 The technical solution of the present invention will be further illustrated through specific embodiments.

[0027] This invention provides an automatic grid-connected control system for multiple generator sets, including a base plate 101. A bottom displacement frame 109 is rotatably mounted at the center of the upper surface of the base plate 101. Two parallel bottom displacement slide rods 110 are fixedly mounted on the inner side of the bottom displacement frame 109. Bottom moving blocks 111 are slidably mounted on the two bottom displacement slide rods 110. A bottom transmission belt 112 for driving the bottom moving blocks 111 to slide on the bottom displacement slide rods 110 is also mounted on the inner side of the bottom displacement frame 109. A top displacement frame 113 is fixed on the bottom moving blocks 111. Two symmetrically arranged top displacement slide rods 114 are fixed on the inner side of the top displacement frame 113. The top displacement frame 113 is arranged perpendicularly to the two bottom displacement slide bars 110. Top moving blocks 115 are slidably mounted on the two top displacement slide bars 114. A top transmission belt 116 is installed on the inner side of the top displacement frame 113 to drive the top moving blocks 115 to slide on the top displacement slide bars 114. A conductive component is installed on the top moving block 115 to transmit all the electrical energy generated by the generator to the power grid. The bottom displacement frame 109 can rotate under the action of the drive component or the cleaning component. The drive component is used to drive the bottom displacement frame 109 to rotate to the required angle to facilitate the contact between the conductive component and the power transmission cable. The cleaning component is used to remove excess material from the bottom displacement frame 109 and the conductive component.

[0028] The conductive component includes multiple conductive contact strips 129, all of which are slidably mounted on an adjusting beam 128. The adjusting beam 128 has a recessed groove 130, and each conductive contact strip 129 is fixed with a stud 134. The stud 134 slides within the recessed groove 130 but cannot rotate within it. Each stud 134 is threaded with a nut 133, which is used to fix the conductive contact strip 129 onto the adjusting beam 128. The conductive component also includes an adjustment base plate 121 fixed to the top moving block 115. A middle swing frame 122 is fixed on the adjustment base plate 121, and an overhead frame 125 is movably mounted on the middle swing frame 122. An adjustment beam 128 is fixed on the overhead frame 125. An adjustment swing arm 127 is movably mounted at the movable connection between the middle swing frame 122 and the overhead frame 125. The adjustment swing arm 127 rotates synchronously with the overhead frame 125. An adjustment electric cylinder 126 is also movably mounted on the adjustment base plate 121. The end of the telescopic rod of the adjustment electric cylinder 126 is movably connected to the adjustment swing arm 127.

[0029] The drive assembly includes an outer ring friction sleeve 117 fixed at the center of the lower surface of the base plate 101. An outer ring gear disk 102 is rotatably mounted on the inner side of the outer ring friction sleeve 117. The outer ring gear disk 102 is fixedly and synchronously driven with the bottom displacement frame 109. A central gear 104 is set at the center of the inner side of the outer ring gear disk 102 through the meshing of three planetary gears 103. The three planetary gears 103 are rotatably mounted on a planetary gear support disk 105. The planetary gear support disk 105 is rotatably mounted inside the outer ring friction sleeve 117. Multiple sliding tracks 106 are radially arranged on the planetary gear support disk 105. A friction magnetic column 107 is slidably mounted on each track 106, and the friction magnetic column 107 is in frictional engagement with the inner wall of the outer friction sleeve 117. An electromagnet 118 is mounted on the outer side of all the friction magnetic columns 107, and is sleeved on the outer friction sleeve 117. A central abutment 108, which magnetically engages with the multiple friction magnetic columns 107, is fixed at the center of the planetary gear support disk 105. A first permanent magnet, which magnetically engages with the central abutment 108, and a second permanent magnet, which magnetically engages with the electromagnet 118, are embedded at both ends inside the friction magnetic column 107. A servo motor support disk 119 is fixed on the outer friction sleeve 117, and a servo motor 120 is fixed on the servo motor support disk 119. The output shaft of the servo motor 120 passes through the central abutment 108 and the planetary gear support disk 105, and is fixedly engaged with the central gear 104.

[0030] The lower surface of the base plate 101 is mounted on the drive cone chamber 131 via multiple connecting and supporting air guide plates 140. An air inlet is located at the bottom of the drive cone chamber 131, and a turbine 132 is rotatably mounted inside the air inlet. A passive impeller 124 is mounted on the outer side of the connecting and supporting air guide plates 140, and is fixed to a passive impeller support plate 123. The passive impeller support plate 123 is rotatably engaged with the base plate 101 and is also fixedly engaged with the bottom displacement frame 109. The drive cone chamber 131 is fixed to the end of the multi-stage telescopic rod 135. The outermost telescopic cylinder of the multi-stage telescopic rod 135 is fixed to a multi-stage telescopic rod bracket 136. The multi-stage telescopic rod bracket 136 is rotatably mounted on a swing insulating support frame 137, which is fixed to an auxiliary trolley 138. A support top plate 139 for supporting the drive cone chamber 131 is also fixed to the auxiliary trolley 138.

[0031] The working principle of the multi-group generator car automatic grid-connected control system disclosed in this invention is as follows: The auxiliary trolley 138 is driven under the cable, where the swing insulating support frame 137 is insulated. Then, the generator car is driven to the auxiliary trolley 138, and power connection is established, so that the output end of the generator car is electrically connected to the conductive contact bar 129 via a wire (a switch with arc-extinguishing function needs to be installed in between). The multi-stage telescopic rod 135 is swung to a vertical state (a servo motor is installed at the connection between the multi-stage telescopic rod bracket 136 and the swing insulating support frame 137 to drive the swing of the multi-stage telescopic rod 135), and then the multi-stage telescopic rod 135 is controlled to extend. The multi-stage telescopic rod 135 drives the drive cone chamber 131 and all components on the drive cone chamber 131 to move upwards, so that the conductive contact bar 129 contacts the corresponding cable, thereby forming a conductive state. Before this, the distance between different conductive contact bars 129 needs to be adjusted according to the corresponding cable spacing. This can be achieved by rotating the nut 133 to adjust and fix the position of the conductive contact bar 129 on the adjusting beam 128. However, the auxiliary trolley 138 is unlikely to travel directly under the cable, so the position of the conductive contact strip 129 needs to be adjusted, and then the conductive contact strip 129 needs to be aligned with the cable. Specifically, the horizontal displacement of the conductive contact strip 129 is controlled by controlling the bottom drive belt 112 and the top drive belt 116. By controlling the adjusting cylinder 126, the telescopic rod of the adjusting cylinder 126 drives the adjusting arm 127 to swing, the adjusting arm 127 drives the overhead frame 125 to swing, and the overhead frame 125 drives all the conductive contact strips 129 on the adjusting beam 128 to swing. Because the ground may be uneven, and the cable may sag under the action of gravity, the contact position between the cable and the conductive contact strip 129 will not be completely horizontal. Therefore, the horizontal angle of the conductive contact strip 129 needs to be adjusted to ensure that the contact area between the conductive contact strip 129 and the cable surface is maximized. Meanwhile, the position where the auxiliary trolley 138 stops will most likely be at an angle to the length of the cable. Therefore, it is necessary to rotate the conductive contact strip 129 to make it parallel to the cable. Specifically, the output shaft of the servo motor 120 drives the central gear 104 to rotate, and at the same time, the electromagnet 118 is activated. The electromagnet 118 magnetically attracts the friction magnetic column 107 to move toward the inner wall of the outer friction sleeve 117, and then squeezes and rubs against the inner wall of the outer friction sleeve 117. Since the friction magnetic column 107 is installed on the planetary gear support disk 105, the rotation of the planetary gear support disk 105 can be restricted by the friction magnetic column 107. When the planetary gear support disk 105 cannot rotate, the central gear 104 will drive the outer gear disk 102 to rotate through the planetary gear 103. The outer gear disk 102 drives the bottom displacement frame 109 on the base disk 101 to rotate, thereby causing the conductive contact strip 129 to rotate by the corresponding angle.This allows the generator truck to connect to the grid at any point on a cable section without power, eliminating the need for the generator truck to travel to a designated location and significantly increasing the speed of grid connection.

[0032] Sometimes, due to long-term storage (infrequent use) of the device, leaves and other debris may remain on the surface of the conductive contact strip 129 and other components on the base plate 101. Therefore, it is necessary to remove the debris. At this time, the turbine 132 can be started. The turbine 132 blows air into the drive cone chamber 131, increasing the internal pressure of the drive cone chamber 131. Then, the air is exhausted outward through the connecting support air guide plate 140. The airflow will drive the passive impeller 124 to rotate. The passive impeller 124 drives the passive impeller support plate 123 to rotate. The passive impeller support plate 123 drives the bottom displacement frame 109 to rotate. At this time, the electromagnet 118 is not energized. Therefore, all the friction magnetic columns 107 will contact the central abutment 108 under the action of magnetic force, and then separate from the inner wall of the outer ring friction sleeve 117. At this time, the planetary gear support plate 105 is in a free rotation state. The purpose is to reduce the rotational resistance of the bottom displacement frame 109, allowing the conductive contact strip 129 to rotate at high speed via the passive impeller 124, thus removing excess material from the conductive contact strip 129 and achieving a cleaning effect. Since the air flowing from the passive impeller 124 is radially along the plane of rotation of the passive impeller 124, this causes the air to flow along a horizontal plane, forming a flowing air plane. The air on the upper and lower surfaces of this air plane is relatively stationary (considering only the upper surface here). This results in the pressure on the upper surface of the air plane being greater than the pressure inside the air plane, causing external air to flow into the air plane, forming a stable airflow. This airflow also helps to separate excess material.

Claims

1. A multi-group generator automatic grid connection control system, characterized in that: The system includes a base plate (101), a bottom displacement frame (109) rotatably mounted at the center of the upper surface of the base plate (101), two parallel bottom displacement slide rods (110) fixedly mounted on the inner side of the bottom displacement frame (109), bottom moving blocks (111) slidably mounted on the two bottom displacement slide rods (110), and a bottom transmission belt (112) for driving the bottom moving blocks (111) to slide on the bottom displacement slide rods (110) is also mounted on the inner side of the bottom displacement frame (109); a top displacement frame (113) is fixed on the bottom moving blocks (111). Two symmetrically arranged top displacement slide rods (114) are fixed on the inner side of the top displacement frame (113). The two top displacement slide rods (114) are spatially perpendicular to the two bottom displacement slide rods (110). Top moving blocks (115) are slidably installed on the two top displacement slide rods (114). A top transmission belt (116) for driving the top moving blocks (115) to slide on the top displacement slide rods (114) is installed on the inner side of the top displacement frame (113). A conductive component is installed on the top moving block (115) for transmitting all the electrical energy generated by the generator car to the power grid. The bottom displacement frame (109) can rotate under the action of the drive component or the cleaning component. The drive component is used to drive the bottom displacement frame (109) to rotate to the required angle so that the conductive component can contact the power transmission cable. The cleaning component is used to remove excess material from the bottom displacement frame (109) and the conductive component.

2. The automatic grid-connected control system for multiple generator sets according to claim 1, characterized in that: The conductive component includes multiple conductive contact strips (129), all of which are slidably mounted on the adjusting beam (128). The adjusting beam (128) has a recessed groove (130), and each conductive contact strip (129) is fixed with a stud (134). The stud (134) slides in the recessed groove (130) and cannot rotate in the recessed groove (130). Each stud (134) is threaded with a nut (133), which is used to fix the conductive contact strip (129) on the adjusting beam (128).

3. The automatic grid connection control system for multiple generator sets according to claim 2, characterized in that: The conductive component also includes an adjustment base plate (121) fixed to the top moving block (115). A middle swing frame (122) is fixed on the adjustment base plate (121). An overhead frame (125) is movably mounted on the middle swing frame (122). An adjustment beam (128) is fixed on the overhead frame (125). An adjustment swing arm (127) is movably mounted at the movable connection between the middle swing frame (122) and the overhead frame (125). The adjustment swing arm (127) rotates synchronously with the overhead frame (125). An adjustment electric cylinder (126) is movably mounted on the adjustment base plate (121). The end of the telescopic rod of the adjustment electric cylinder (126) is movably connected to the adjustment swing arm (127).

4. The automatic grid-connected control system for multiple generator sets according to claim 3, characterized in that: The drive assembly includes an outer ring friction sleeve (117) fixed at the center of the lower surface of the base plate (101). An outer ring gear disk (102) is rotatably mounted on the inner side of the outer ring friction sleeve (117). The outer ring gear disk (102) is fixedly and synchronously driven with the bottom displacement frame (109). A center gear (104) is set at the center of the inner side of the outer ring gear disk (102) through the meshing of three planetary gears (103). The three planetary gears (103) are rotatably mounted on the planetary gear support disk (105). The planetary gear support disk (105) is rotatably mounted inside the outer ring friction sleeve (117).

5. The automatic grid-connected control system for multiple generator sets according to claim 4, characterized in that: Multiple slide rails (106) are radially provided on the planetary gear support disk (105). A friction magnetic column (107) is slidably provided on each slide rail (106). The friction magnetic column (107) is in frictional engagement with the inner wall of the outer ring friction sleeve (117). An electromagnet (118) is provided on the outside of all the friction magnetic columns (107). The electromagnet (118) is sleeved on the outer ring friction sleeve (117). A central abutment (108) is fixed at the center of the planetary gear support disk (105) and is magnetically engaged with the multiple friction magnetic columns (107).

6. The automatic grid-connected control system for multiple generator sets according to claim 5, characterized in that: The friction magnetic column (107) has a first permanent magnet that is magnetically engaged with the central block (108) and a second permanent magnet that is magnetically engaged with the electromagnet (118) at both ends.

7. The automatic grid-connected control system for multiple generator sets according to claim 6, characterized in that: A servo motor support plate (119) is fixed on the outer ring friction sleeve (117), and a servo motor (120) is fixed on the servo motor support plate (119). The output shaft of the servo motor (120) passes through the center stop block (108) and the planetary gear support plate (105) and is fixedly engaged with the center gear (104).

8. The automatic grid-connected control system for multiple generator sets according to claim 7, characterized in that: The lower surface of the base plate (101) is set on the drive cone chamber (131) by multiple connecting and supporting air guide plates (140). The bottom end of the drive cone chamber (131) is provided with an air inlet, and a gas turbine (132) is rotatably arranged inside the air inlet. A passive impeller (124) is provided on the outside of the connecting and supporting air guide plates (140). The passive impeller (124) is fixed on the passive impeller support plate (123). The passive impeller support plate (123) is rotatably engaged with the base plate (101). The passive impeller support plate (123) is also fixedly engaged with the bottom displacement frame (109).

9. The automatic grid connection control system for multiple generator sets according to claim 8, characterized in that: The drive cone chamber (131) is fixed to the end of the telescopic rod of the multi-stage telescopic rod (135). The outermost telescopic cylinder of the multi-stage telescopic rod (135) is fixed on the multi-stage telescopic rod bracket (136). The multi-stage telescopic rod bracket (136) is rotatably mounted on the swing insulating support frame (137). The swing insulating support frame (137) is fixed on the auxiliary board car (138). The auxiliary board car (138) is also fixed with a support top plate (139) for supporting the drive cone chamber (131).

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