Flexible direct-current converter valve tower

Abstract

The invention belongs to the technical field of valve towers, and particularly relates to a flexible direct-current converter valve tower which comprises a supporting frame and a converter valve assembly, a containing groove is formed in the supporting frame, a shell is placed in the containing groove, the converter valve assembly is arranged in the shell, the outer wall of the supporting frame is fixedly connected with two vertical rods, and the vertical rods are fixedly connected with the supporting frame. The upper ends of the two vertical rods are jointly and fixedly connected with a water storage tank, a copper bar making contact with the shell is arranged at the bottom of the containing groove, a cooling pipe is arranged on the copper bar in a penetrating mode, and a water drainage pipe is fixedly connected between the lower side wall of the water storage tank and the end of the cooling pipe. Heat on the copper bar is adsorbed through flowing of cooling water, heat dissipation work of the shell is completed, in the flowing process of the cooling water, the cooling water flows back to scour the cleaning plate, the left side and the right side of the cleaning plate clean the upper surface of the shell, and it is avoided that accumulated dust affects heat dissipation, and the upper surface of the shell is coated with the cooling water; heat of the shell is further adsorbed through evaporation, and heat dissipation of the shell is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of valve towers, and in particular to a flexible direct current converter valve tower. Background Art

[0002] The converter valve tower is the core equipment of the flexible DC transmission system. Electric energy is collected here through DC lines and converted into the commonly used AC electricity through the converter valve.

[0003] Chinese patent CN110912422A discloses a converter valve assembly and a frame-type valve tower having the converter valve assembly. The converter valve includes a converter valve assembly and a shell. The converter valve assembly is arranged inside the shell. The shell is also provided with a door body, and the door body is provided with heat dissipation holes. The public document records that the converter valve assembly is protected by providing a shell, and at the same time, a dust-proof effect is achieved, and the heat dissipation of the converter valve tower is completed through the flow of coolant. However, even if a shell is provided, there is still a problem of dust falling on the upper surface of the shell. When dust accumulates, the heat dissipation capacity of the shell itself becomes poor, thereby affecting the heat dissipation effect of the converter valve, and further affecting the normal operation of the valve tower.

[0004] To solve the above problems, we proposed a flexible DC converter valve tower. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the converter valve of the existing valve tower is provided with a shell, but dust still exists on the upper surface of the shell. When the dust accumulates, the heat dissipation capacity of the shell itself becomes poor, thereby affecting the heat dissipation effect of the converter valve, and further affecting the normal operation of the valve tower. A flexible DC converter valve tower is proposed to solve the problem that the converter valve of the existing valve tower is provided with a shell, but dust still exists on the upper surface of the shell. When the dust accumulates, the heat dissipation capacity of the shell itself becomes poor, thereby affecting the heat dissipation effect of the converter valve, and further affecting the normal operation of the valve tower.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a flexible DC converter valve tower, including a support frame and a converter valve assembly, the support frame is provided with a placement groove, a shell is placed in the placement groove, the converter valve assembly is arranged inside the shell, the outer wall of the support frame is fixedly connected to two vertical rods, the upper ends of the two vertical rods are commonly fixedly connected to a water tank, the bottom of the placement groove is provided with a copper bar in contact with the shell, a cooling pipe is penetrated through the copper bar, a drain pipe is fixedly connected between the lower side wall of the water tank and the end of the cooling pipe, the outer wall of the support frame is fixedly connected to the water tank, and the other end of the cooling pipe An arc-shaped pipe is connected between one end and the upper side wall of the water tank, a drainage pump is arranged in the water tank, a connecting pipe is fixed to the output end of the drainage pump, the end of the connecting pipe is connected to a flushing groove through a bend pipe, a return pipe is fixedly connected between the outer wall of the flushing groove and the outer wall of the water tank, a motor is fixedly connected to the outer wall of the support frame, a screw rod is fixedly connected to the driving end of the motor, a ball slider is matched with the outer wall of the screw rod, the upper side wall of the ball slider is fixedly connected to a cleaning plate located on the upper side of the shell through a right-angle rod, and a plush layer in contact with the upper side wall of the shell is fixedly installed on the lower side wall of the cleaning plate.

[0007] In the above-mentioned flexible DC converter valve tower, an installation opening is provided on the outer wall of the flushing tank, a mounting block is installed in the installation opening, and a filter element column is embedded and installed at one end of the mounting block located in the flushing tank.

[0008] In the above-mentioned flexible DC converter valve tower, a bayonet is provided on the inner wall of the mounting port, an opening is provided on the outer wall of the mounting block, an arc-shaped protrusion matching the bayonet is slidably provided on the opening, and a telescopic spring is fixedly connected between the arc-shaped protrusion and the inner wall of the opening.

[0009] In the above-mentioned flexible DC converter valve tower, a sealing ring is fixedly embedded in the lower side wall of the cleaning plate, and the sealing ring is located outside the plush layer. The specification of the sealing ring is consistent with the specification of the flushing groove.

[0010] In the above-mentioned flexible DC converter valve tower, a support bearing is fixedly connected to the outer wall of the support frame at one end away from the motor, and the end of the screw rod away from the motor is polished and smooth and inserted into the support bearing and fixedly connected to the inner ring of the support bearing.

[0011] In the above-mentioned flexible DC converter valve tower, a piston plate is slidably arranged in the water tank, a return spring is fixedly connected between the piston plate and the inner bottom wall of the water tank, a switch 1 located at the lower side of the piston plate is fixed in the water tank, and the switch 1 is connected to the drainage pump and the external power supply through a wire, and a switch 2 located on the upper side of the piston plate is also fixed in the water tank, a pressing rod located at the lower side of the switch 2 is fixedly connected to the upper side wall of the piston plate, and the switch 2 is connected to the motor and the external power supply through a wire, and the motor adopts a servo motor and is connected to a servo controller.

[0012] In the above-mentioned flexible DC converter valve tower, the switch 1 is a delayed reset switch.

[0013] In the above-mentioned flexible DC converter valve tower, the water tank is filled with cooling water, and cooling recesses for cooling water heat dissipation are evenly distributed on the outer wall of the water tank.

[0014] Compared with the existing technology, the advantages of this flexible DC converter valve tower are:

[0015] 1. The copper bar absorbs the heat on the shell to complete the heat dissipation of the converter valve assembly. The cooling water in the water tank flows out from the drain pipe to the cooling pipe. The heat on the copper bar is absorbed by the flow of water, so that the copper bar can continuously absorb the heat on the converter valve assembly. Combined with heat dissipation, the heat dissipation efficiency is higher;

[0016] 2. Pump the water out of the water storage tank through the drainage pump and pump it into the flushing tank through the connecting pipe. When the water flows in the flushing tank, it flushes the plush layer on the lower surface of the cleaning plate, flushes the dust on the surface of the plush layer, and makes it easier for the plush layer to continue to adhere to the dust. At the same time, the plush layer is wetted, and it is easier to adhere to dust after being wetted. At the same time, the wet plush layer can be coated with water stains on the shell, and the heat on the shell can be taken out through the evaporation of the water stains, further accelerating the heat dissipation efficiency of the shell;

[0017] 3. The motor starts to drive the screw to rotate, and the ball slider drives the cleaning plate to move left and right to scrape off the dust on the surface of the shell to prevent dust accumulation from affecting the heat dissipation of the shell;

[0018] In summary, the present invention absorbs the heat on the copper busbar through the flow of cooling water to complete the heat dissipation of the shell, and in the process of cooling water flowing, the cooling water refluxes to flush the cleaning plate and the cleaning of the upper surface of the shell on the left and right of the cleaning plate to avoid dust accumulation affecting heat dissipation, and the cooling water is coated on the upper surface of the shell to further absorb the heat of the shell through evaporation to promote the heat dissipation of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a flexible DC converter valve tower proposed by the present invention;

[0020] Figure 2 This is an enlarged view of the structure of part A of a flexible DC converter valve tower proposed by the present invention;

[0021] Figure 3 This is a schematic structural diagram of a mounting block in a valve tower of a flexible DC converter valve proposed by the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a copper busbar in a flexible DC converter valve tower proposed by the present invention;

[0023] Figure 5 This is a cross-sectional view of a water storage tank in a flexible DC converter valve tower proposed by the present invention.

[0024] In the figure: 1 support frame, 2 placement groove, 3 shell, 4 vertical rod, 5 water tank, 6 drainage pipe, 7 arc pipe, 8 water tank, 9 connecting pipe, 10 elbow, 11 flushing groove, 12 mounting block, 13 filter column, 14 switch two, 15 return pipe, 16 motor, 17 support bearing, 18 screw rod, 19 pressing rod, 20 cleaning plate, 21 right angle rod, 22 arc convex block, 23 cooling pipe, 24 copper busbar, 25 piston plate, 26 return spring, 27 switch one. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Reference Figure 1-5 A flexible DC converter valve tower includes a support frame 1 and a converter valve assembly. A placement groove 2 is provided on the support frame 1, a shell 3 is placed in the placement groove 2, and the converter valve assembly is arranged inside the shell 3. The outer wall of the support frame 1 is fixedly connected to two vertical rods 4. The upper ends of the two vertical rods 4 are commonly fixedly connected with a water tank 5. The water tank 5 is filled with cooling water. The outer wall of the water tank 5 is evenly distributed with cooling recesses for cooling water heat dissipation. By setting the cooling recesses, the contact area between the water tank 5 and the air is increased, and the heat dissipation area of ​​the water tank 5 is increased.

[0028] A copper bar 24 in contact with the shell 3 is arranged at the bottom of the placement groove 2, and a cooling pipe 23 is penetrated on the copper bar 24. A drainage pipe 6 is fixedly connected between the lower side wall of the water storage tank 5 and the end of the cooling pipe 23. The outer wall of the support frame 1 is fixedly connected to the water storage tank 8. An arc pipe 7 is connected between the other end of the cooling pipe 23 and the upper side wall of the water storage tank 8. A drainage pump is arranged in the water storage tank 8. A connecting pipe 9 is fixedly provided at the output end of the drainage pump, and an end of the connecting pipe 9 extends to the outside of the water storage tank 8. The end of the connecting pipe 9 is connected to the flushing groove 11 through a bend pipe 10. A reflux pipe 15 is fixedly connected between the outer wall of the flushing groove 11 and the outer wall of the water storage tank 5. The copper bar 24 adsorbs on the shell 3. The heat of the converter valve assembly is completed, and the cooling water in the water tank 5 flows out from the drain pipe 6 to the cooling pipe 23. The heat on the copper bar 24 is absorbed by the flow of water, so that the copper bar 24 can continuously absorb the heat on the converter valve assembly, and then it is discharged from the arc pipe 7 to the water tank 8. The water in the water tank 8 is pumped out by the drain pump and pumped into the flushing groove 11 through the connecting pipe 9. When the water flows in the flushing groove 11, it flushes the plush layer on the lower surface of the cleaning plate 20, flushes the dust on the surface of the plush layer, and wets the plush layer at the same time. Then the water flows through the filter core column 13 for filtration and is pumped back to the water tank 5 through the reflux pipe 15, so as to realize the recycling of cooling water.

[0029] The outer wall of the support frame 1 is fixedly connected to the motor 16, and the driving end of the motor 16 is fixedly connected to the screw rod 18. A support bearing 17 is fixedly connected to the outer wall of the end of the support frame 1 away from the motor 16. The end of the screw rod 18 away from the motor 16 is polished and smoothly arranged and inserted in the support bearing 17 and fixedly connected to the inner ring of the support bearing 17. The outer wall of the screw rod 18 is matched with a ball slider. The upper side wall of the ball slider is fixedly connected to the cleaning plate 20 located on the upper side of the shell 3 through a right-angle rod 21. The lower side wall of the cleaning plate 20 is fixedly installed with a plush layer in contact with the upper side wall of the shell 3. After the plush layer is flushed, the motor 16 is started to drive the screw rod 18 to rotate, and the ball slider drives the cleaning plate 20 to move left and right to scrape off the dust on the surface of the shell 3. At the same time, water stains can be coated on the surface of the shell 3. The evaporation of the water stains can bring out the heat on the shell 3, further accelerating the heat dissipation efficiency of the shell 3.

[0030] Furthermore, a sealing ring is fixedly embedded in the lower side wall of the cleaning plate 20, and the sealing ring is located on the outside of the plush layer. The specifications of the sealing ring are consistent with the specifications of the flushing groove 11. The provision of the sealing ring can ensure a sealing effect when the cleaning plate 20 contacts the flushing groove 11, thereby preventing the cooling water in the flushing groove 11 from leaking out.

[0031] An installation opening is provided on the outer wall of the flushing groove 11, and a installation block 12 is installed in the installation opening. A filter column 13 is embedded and installed at one end of the installation block 12 located in the flushing groove 11. A bayonet is provided on the inner wall of the installation opening. An opening is provided on the outer wall of the installation block 12. An arc-shaped protrusion 22 matching the bayonet is slidably provided on the opening. A telescopic spring is fixedly connected between the arc-shaped protrusion 22 and the inner wall of the opening. The cooling water in the flushing groove 11 flushes the accumulated dust on the cleaning plate 20. In the process of the cooling water flowing from the flushing groove 11 to the water storage tank 5, the cooling water is filtered by the filter column 13 to remove the dust in the cooling water, thereby ensuring that the cooling water can be reused.

[0032] A piston plate 25 is slidably arranged in the water tank 8, a reset spring 26 is fixedly connected between the piston plate 25 and the inner bottom wall of the water tank 8, a switch 27 is fixedly arranged in the water tank 8 at the lower side of the piston plate 25, the switch 27 is connected to the drainage pump and the external power supply through a wire, a switch 2 14 is also fixedly arranged in the water tank 8 at the upper side of the piston plate 25, a pressing rod 19 is fixedly connected to the upper side wall of the piston plate 25 at the lower side of the switch 2 14, the switch 2 14 is connected to the motor 16 and the external power supply through a wire, the motor 16 adopts a servo motor and is connected to a servo controller, the switch 27 adopts a delayed reset switch, the cooling water flows out from the water tank 5 to the heat on the adsorption shell 3, and then flows into the water tank 8 for collection, when the weight of the cooling water in the water tank 8 overcomes the elastic force of the reset spring 26, the piston plate 25 moves downward to open When the switch 27 is pressed, the drainage pump is powered on and started to pump the cooling water in the water tank 8 out to the flushing groove 11 to flush the cleaning plate 20. Then the cooling water flows back to the water tank 5 through the reflux pipe 15. After the cooling water in the water tank 8 is gradually pumped out, the return spring 26 bounces the piston plate 25 up, and the switch 27 is no longer pressed. The drainage pump is powered off and turned off. When the piston plate 25 moves up to the pressing rod 19 to press the switch 27, the motor 16 is powered on and started, driving the screw rod 18 to rotate, so as to realize the left and right movement of the ball slider and the cleaning plate 20, and complete the cleaning of the upper surface of the shell 3 and the coating of cooling water. When the cooling water flowing into the water tank 8 overcomes the elastic force of the return spring 26 to squeeze the piston plate 25 downward so that the pressing rod 19 no longer switches 14, the ball slider has just completed a left and right movement process, and the cleaning plate 20 is still on the upper side of the flushing groove 11.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible DC converter valve tower, comprising a support frame (1) and a converter valve assembly, characterized in that: The support frame (1) is provided with a placement groove (2), a shell (3) is placed in the placement groove (2), the flow-converting valve assembly is arranged inside the shell (3), the outer wall of the support frame (1) is fixedly connected to two vertical rods (4), the upper ends of the two vertical rods (4) are commonly fixedly connected to a water storage tank (5), the bottom of the placement groove (2) is provided with a copper bar (24) in contact with the shell (3), a cooling pipe (23) is penetrated through the copper bar (24), a drainage pipe (6) is fixedly connected between the lower side wall of the water storage tank (5) and the end of the cooling pipe (23), the outer wall of the support frame (1) is fixedly connected to the water storage tank (8), the other end of the cooling pipe (23) is connected to the upper side wall of the water storage tank (8) with an arc pipe (7), and the water storage tank (8) is connected to the outer wall of the support frame (1). A drainage pump is provided in the water tank (8), and a connecting pipe (9) whose end extends to the outside of the water storage tank (8) is fixed to the output end of the drainage pump, and the end of the connecting pipe (9) is connected to a flushing groove (11) through a bent pipe (10), and a return pipe (15) is fixedly connected between the outer wall of the flushing groove (11) and the outer wall of the water storage tank (5), and a motor (16) is fixedly connected to the outer wall of the support frame (1), and a screw rod (18) is fixedly connected to the driving end of the motor (16), and a ball slider is matched with the outer wall of the screw rod (18), and the upper side wall of the ball slider is fixedly connected to a cleaning plate (20) located on the upper side of the shell (3) through a right-angle rod (21), and the lower side wall of the cleaning plate (20) is fixedly installed with a plush layer in contact with the upper side wall of the shell (3).

2. The flexible DC converter valve tower according to claim 1, characterized in that: The outer wall of the flushing groove (11) is provided with a mounting opening, a mounting block (12) is mounted in the mounting opening, and a filter cartridge column (13) is embedded and mounted on one end of the mounting block (12) located in the flushing groove (11).

3. The flexible DC converter valve tower according to claim 2, characterized in that: The inner wall of the installation opening is provided with a bayonet, the outer wall of the installation block (12) is provided with an opening, the opening is slidably provided with an arc-shaped protrusion (22) matching the bayonet, and a telescopic spring is fixedly connected between the arc-shaped protrusion (22) and the inner wall of the opening.

4. The flexible DC converter valve tower according to claim 1, characterized in that: A sealing ring is fixedly embedded in the lower side wall of the cleaning plate (20), the sealing ring is located outside the plush layer, and the specifications of the sealing ring are consistent with the specifications of the flushing groove (11).

5. The flexible DC converter valve tower according to claim 1, characterized in that: A support bearing (17) is fixedly connected to the outer wall of one end of the support frame (1) away from the motor (16); one end of the screw rod (18) away from the motor (16) is polished and arranged to be smooth and inserted into the support bearing (17) and fixedly connected to the inner ring of the support bearing (17).

6. The flexible DC converter valve tower according to claim 1, characterized in that: A piston plate (25) is slidably arranged in the water storage tank (8), a return spring (26) is fixedly connected between the piston plate (25) and the inner bottom wall of the water storage tank (8), a switch 1 (27) located at the lower side of the piston plate (25) is fixed in the water storage tank (8), the switch 1 (27) is connected to a drainage pump and an external power supply through a wire, a switch 2 (14) located at the upper side of the piston plate (25) is also fixed in the water storage tank (8), a pressing rod (19) located at the lower side of the switch 2 (14) is fixedly connected to the upper side wall of the piston plate (25), the switch 2 (14) is connected to a motor (16) and an external power supply through a wire, the motor (16) is a servo motor, and is connected to a servo controller.

7. The flexible DC converter valve tower according to claim 6, characterized in that: The switch 1 (27) is a time-delay reset switch.

8. The flexible DC converter valve tower according to claim 1, characterized in that: The water storage tank (5) is filled with cooling water, and the outer wall of the water storage tank (5) is evenly distributed with cooling recesses for dissipating heat from the cooling water.

Images