Intelligent regulation and control device for circulating water of power plant

Abstract

The invention discloses a power plant circulating water intelligent regulation and control device, and belongs to the technical field of circulating water regulation and control, the power plant circulating water intelligent regulation and control device comprises a transfer box, an input pipe, an output pipe and a plurality of medicine inlet pipes, the transfer box comprises a flow mixing cabin, a middle plate and two turning plates, the two turning plates are hinged to the two sides of the middle plate respectively, and the medicine inlet pipes are arranged in the flow mixing cabin; the middle plate and the two turning plates are laid on the flow mixing cabin, the top of the flow mixing cabin is open, the input pipe is communicated with one end of the flow mixing cabin, the output pipe is communicated with the end, away from the input pipe, of the flow mixing cabin, and a medicine mixing mechanism used for discharging medicine is arranged between the rotating rod and the flow mixing cabin. And two adjusting mechanisms for adjusting the positions of the stirring blades are arranged on the inner walls of the two sides of the flow mixing cabin respectively. The mixed flow cabin is arranged in the circulation process, so that the medicine can be uniformly added into the circulating water on the premise of not cutting off the circulation, and the water quality and the cooling efficiency of the circulating water are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of circulating water regulation, and in particular relates to an intelligent regulating device for circulating water in a power plant. Background Art

[0002] Coal-fired power generation and gas-fired power generation are the two most mainstream types of thermal power generation. Power plants that mainly use gas turbine generator sets are called gas turbine power plants. The circulating water system in a gas turbine power plant is mainly used to cool the generator and other auxiliary equipment. The efficient operation of the circulating water system is crucial to ensuring the thermal efficiency and operating costs of the entire power plant, so it is very important to introduce intelligent control.

[0003] When using circulating water to cool motors, since the circulating water may cause problems such as metal corrosion, scaling and algae growth during the circulation process, it is necessary to regularly add scale inhibitors, bactericides and other drugs to the circulating water through a dosing device. At present, in most cases, after the drugs are prepared in the dosing device, they will be directly added to the circulation of the circulating water and then diffused throughout the entire circulating water. However, since a variety of different drugs need to be added, in order to prevent these drugs from reacting with each other, it is necessary to set up multiple dosing devices that are connected to the circulating water pipeline respectively. In addition, during the dosing process of the dosing device, the circulation of the circulating water needs to be closed in most cases, and the circulation will be restarted after the drugs are added. This will affect the cooling efficiency of the circulating water for the power plant motor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide an intelligent control device for circulating water in a power plant.

[0005] The technical solution adopted to solve the above technical problems is:

[0006] A smart control device for circulating water in a power plant, comprising a transfer box, an input pipe, an output pipe and a plurality of drug inlet pipes, the transfer box comprising a mixed flow chamber, an intermediate plate and two flaps, the two flaps being hinged to the two sides of the intermediate plate respectively, the intermediate plate and the two flaps being laid on the mixed flow chamber, the mixed flow chamber being designed with a top opening, the input pipe being connected to one end of the mixed flow chamber, the output pipe being connected to an end of the mixed flow chamber away from the input pipe, a plurality of drug inlet pipes being connected to one end of the mixed flow chamber on the same side different from the input pipe and the output pipe, a servo motor being fixedly connected to the top wall of the intermediate plate, a rotating rod being fixedly connected to the output end of the servo motor, two stirring blades being fixedly connected to the side wall of the rotating rod, a drug mixing mechanism for placing drugs being arranged between the rotating rod and the mixed flow chamber, and two adjustment mechanisms for adjusting the position of the stirring blades being arranged on the inner walls on both sides of the mixed flow chamber respectively.

[0007] Furthermore, the two stirring blades are at different heights, and the two stirring blades are located on the same straight line but are respectively located on two sides of the rotating rod.

[0008] Furthermore, the drug mixing mechanism includes a collecting plate, a plurality of guide grooves, a plurality of drug inlet holes and a plurality of drug outlet holes. The collecting plate is fixedly arranged on the side wall of the rotating rod, and the collecting plate is designed to be open at the upper end. The plurality of guide grooves are respectively arranged at corresponding positions of the plurality of drug inlet pipes, and the plurality of guide grooves are respectively pointed to the collecting plate at one end away from the drug inlet pipe. The plurality of drug inlet holes are respectively opened on the side wall of the rotating rod, and the drug inlet holes are all arranged at the same height as the bottom of the collecting plate. The plurality of drug outlet holes are also opened on the side wall of the rotating rod, and the plurality of drug outlet holes are all located above the stirring blade.

[0009] Furthermore, the guide grooves that are closer to the collection tray are shorter than the guide grooves that are farther away from the collection tray, and the guide grooves that are not directly facing the collection tray are inclined. Each of the guide grooves is inclined downward, and the guide grooves close to one end of the collection tray are located obliquely above the collection tray.

[0010] Furthermore, the adjustment mechanism includes a lifting plate, two vertical rods, two moving racks, two fixed blocks, two rotating gears, two connecting rods, two first bevel gears, two second bevel gears, two center rods and two adjusting rods. The two fixed blocks are respectively fixedly connected to the inner walls on both sides of the mixed flow chamber, the top walls of the fixed blocks are provided with through holes, the moving rack is fixedly connected to the bottom of the vertical rods, the moving rack passes through the through holes, the lifting plate is fixedly connected to one end of the two vertical rods away from the moving rack, the side wall of the lifting plate is magnetically connected to the inner wall of the mixed flow chamber, a working cavity is provided in the fixed block, and the through hole is connected to the working cavity The interior is conductive, the rotating gear is rotatably connected to the inner wall of the working chamber, the rotating gear is meshed with the moving rack, one end of the connecting rod is fixedly connected to the side wall of the rotating gear, and the other end is fixedly connected to the side wall of the first bevel gear, a placement groove is provided on the side wall of the fixed block facing the middle position of the mixed flow chamber, one end of the center rod is rotatably connected to the side wall of the working chamber, and the other end passes through the side wall of the working chamber and is rotatably connected to the side wall of the placement groove, the second bevel gear is fixedly connected to the side wall of the center rod, the first bevel gear is meshed with the second bevel gear, the adjustment rod is fixedly connected to the side wall of the center rod, and the adjustment rod is located in the placement groove.

[0011] Furthermore, an arc block is fixedly connected to the side wall of the adjustment rod facing the middle position of the mixed flow cabin, and the end of the arc block close to the lifting plate is the high end, and the end away from the lifting plate is the low end.

[0012] Furthermore, the length of the adjustment rod is consistent with one-third of the width of the mixed flow chamber, and one end of the adjustment rod fixed on the central rod is designed to be arc-shaped.

[0013] Through the above technical solution, the beneficial effects of the present invention are as follows:

[0014] (1) The present invention adds a mixing chamber to the circulation path of the circulating water, so that several different drugs enter the mixing chamber through different drug inlet pipes, and then add the drugs to the circulation path during the circulation process. In addition, due to the addition of a servo motor and a stirring blade, the drugs can be evenly mixed into the circulation, so that the drugs can take effect more quickly and stably. At the same time, since all drugs are released from the rotating rod, each drug can be evenly released into the circulation, so that it can take effect evenly.

[0015] (2) The present invention provides an adjustment mechanism in the inner wall of the mixed flow chamber so that the staff can adjust the stirring blade to a horizontal angle suitable for removal before taking out the stirring blade, so that the staff can take out the stirring blade more easily. In addition, the flaps on both sides of the middle plate are also convenient for the staff to understand the situation inside the mixed flow chamber. During daily maintenance, the staff only needs to open the flap to intuitively see the situation inside the mixed flow chamber, which is convenient for the staff to maintain the interior of the mixed flow chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the connection structure of the middle plate, the flap, the servo motor and the medicine mixing mechanism in the present invention;

[0018] Figure 3 It is a schematic diagram of the structure inside the mixed flow cabin of the present invention;

[0019] Figure 4 It is an overall schematic diagram of the adjustment mechanism in the present invention;

[0020] Figure 5 It is a schematic diagram of the structure inside the fixed block of the present invention.

[0021] Figure numerals: 1. input pipe; 2. output pipe; 3. medicine inlet pipe; 4. mixed flow chamber; 5. middle plate; 6. flap; 7. servo motor; 8. rotating rod; 9. stirring blade; 10. collecting plate; 11. guide groove; 12. medicine inlet hole; 13. medicine outlet hole; 14. lifting plate; 15. vertical rod; 16. moving rack; 17. fixed block; 18. rotating gear; 19. connecting rod; 20. first bevel gear; 21. second bevel gear; 22. center rod; 23. adjusting rod; 24. perforation; 25. placement groove; 26. arc block. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] like Figure 1 - Figure 5 As shown, this embodiment provides an intelligent control device for circulating water in a power plant, including a transfer box, an input pipe 1, an output pipe 2 and a plurality of drug inlet pipes 3. The transfer box includes a mixed flow chamber 4, an intermediate plate 5 and two flaps 6. The two flaps 6 are hinged to the two sides of the intermediate plate 5 respectively. The intermediate plate 5 and the two flaps 6 are all laid on the mixed flow chamber 4. The mixed flow chamber 4 is designed to be open at the top. The intermediate plate 5 is fixed to the top of the mixed flow chamber 4 by fixing screws around it. The two flaps 6 are more convenient to open than the intermediate plate 5, so it is convenient for the staff to carry out inspection and maintenance.

[0024] The input pipe 1 is connected to one end of the mixed flow chamber 4, the output pipe 2 is connected to the end of the mixed flow chamber 4 away from the input pipe 1, and several drug inlet pipes 3 are respectively connected to the ends of the mixed flow chamber 4 on the same side different from the input pipe 1 and the output pipe 2. The heights of the several drug inlet pipes 3 are the same, which is convenient for different Chinese medicines to enter the mixed flow chamber 4 through the drug inlet pipes 3. The top wall of the middle plate 5 is fixedly connected to a servo motor 7, and the output end of the servo motor 7 is fixedly connected to a rotating rod 8. Two stirring blades 9 are fixedly connected to the side wall of the rotating rod 8. The two stirring blades 9 are at different heights. The two stirring blades 9 are located on the same straight line but are located on both sides of the rotating rod 8. The stirring blades 9 located at different heights are more convenient for mixing the circulating water and the medicine together.

[0025] A drug mixing mechanism for placing drugs is arranged between the rotating rod 8 and the mixing chamber 4, and the drug mixing mechanism includes a collecting plate 10, a plurality of guide grooves 11, a plurality of drug inlet holes 12 and a plurality of drug outlet holes 13. The collecting plate 10 is fixedly arranged on the side wall of the rotating rod 8, and the collecting plate 10 is designed to be open at the upper end. The edge height of the collecting plate 10 can be adjusted according to the length of the circulating passage of the circulating water. If the passage is long, the edge height can be appropriately increased to accommodate more drugs. The plurality of guide grooves 11 are respectively arranged at the corresponding positions of the plurality of drug inlet pipes 3, and the plurality of guide grooves 11 are respectively pointed to the collecting plate 10 away from one end of the drug inlet pipe 3, and the distance from the collecting plate 10 is The guide groove 11 that is closer is shorter than the guide groove 11 that is farther away from the collecting plate 10. The guide groove 11 that is not directly facing the collecting plate 10 is tilted, and each guide groove 11 is tilted downward. The guide groove 11 tilted downward allows the medicine to flow smoothly into the collecting plate 10, and even if there is no guide groove 11 to guide the last distance to the collecting plate 10, the medicine can also flow into the collecting plate 10 under the action of gravity. The guide groove 11 is close to one end of the collecting plate 10 and is located obliquely above the collecting plate 10. When the stirring blade 9 is taken out, the guide groove 11 will not affect the rise of the collecting plate 10 and the stirring blade 9.

[0026] A plurality of drug inlet holes 12 are respectively opened on the side wall of the rotating rod 8, and the drug inlet holes 12 are all set at the same height as the bottom of the collecting plate 10. A plurality of drug outlet holes 13 are also opened on the side wall of the rotating rod 8, and the plurality of drug outlet holes 13 are all located above the stirring blade 9. Each drug inlet hole 12 is connected to a drug outlet hole 13, and the middle position of the collecting plate 10 is concave in design, so the medicine entering the collecting plate 10 will directly enter the drug inlet hole 12, and then flow into the circulating water of the mixed flow chamber 4 through the drug outlet hole 13.

[0027] Two adjustment mechanisms for adjusting the position of the stirring blade 9 are respectively arranged on the inner walls on both sides of the mixed flow chamber 4, and the adjustment mechanisms include a lifting plate 14, two vertical rods 15, two moving racks 16, two fixed blocks 17, two rotating gears 18, two connecting rods 19, two first bevel gears 20, two second bevel gears 21, two center rods 22 and two adjusting rods 23. The two fixed blocks 17 are respectively fixedly connected to the inner walls on both sides of the mixed flow chamber 4, and the top wall of the fixed block 17 is provided with a through hole 24. The moving rack 16 is fixedly connected to the bottom of the vertical rod 15, and the moving rack 16 passes through the through hole 24. The lifting plate 14 is fixedly connected to the end of the two vertical rods 15 away from the moving rack 16. The side wall of the lifting plate 14 is magnetically connected to the inner wall of the mixed flow chamber 4. The magnetic force will fix the lifting plate 14 in the current position, thereby ensuring that the lifting plate 14 will not accidentally fall under the action of gravity during daily operation. When the staff needs to move the lifting plate 14, they can overcome the magnetic force to drive the lifting plate 14 to rise or fall.

[0028] A working chamber is provided in the fixed block 17, and the through hole 24 is connected to the inside of the working chamber. The rotating gear 18 is rotatably connected to the inner wall of the working chamber, and the rotating gear 18 is meshed with the moving rack 16. One end of the connecting rod 19 is fixedly connected to the side wall of the rotating gear 18, and the other end is fixedly connected to the side wall of the first bevel gear 20. A placement groove 25 is provided on the side wall of the fixed block 17 facing the middle position of the mixed flow chamber 4. One end of the center rod 22 is rotatably connected to the side wall of the working chamber, and the other end passes through the side wall of the working chamber and is rotatably connected to the side wall of the placement groove 25. The second bevel gear 21 is fixedly connected to the side wall of the center rod 22, and the first bevel gear 20 is meshed with the second bevel gear 21. The adjusting rod 23 is fixedly connected to the side wall of the center rod 22, the adjusting rod 23 is located in the placement groove 25, and the side wall of the adjusting rod 23 facing the middle position of the mixed flow chamber 4 is fixedly connected with an arc block 26, the end of the arc block 26 close to the lifting plate 14 is the high end, and the end away from the lifting plate 14 is the low end. The length of the adjusting rod 23 is consistent with one-third of the width of the mixed flow chamber 4, and the end of the adjusting rod 23 fixed on the center rod 22 is an arc-shaped design. Because it is unclear what posture the stirring blade 9 will be in before the position is adjusted, the arc block 26 can slow down the collision between the adjusting rod 23 and the stirring blade 9, so that the stirring blade 9 can be more smoothly adjusted to an angle that is convenient for removal.

[0029] The working principle of this embodiment is as follows: circulating water enters the mixed flow chamber 4 from the input pipe 1, and then is output through the output pipe 2. During the circulation of the circulating water, various drugs can enter the mixed flow chamber 4 through different drug inlet pipes 3, and the drugs will enter the collecting plate 10 along the guide groove 11, and then flow into the drug inlet hole 12, and flow out through the drug outlet hole 13, and enter the circulating water in the mixed flow chamber 4. At the same time, the start of the servo motor 7 will cause the rotating rod 8 to drive the stirring blade 9 to rotate, thereby stirring the circulating water in the mixed flow chamber 4 evenly, so that the drugs can enter the circulating water more evenly;

[0030] When routine maintenance is required, the staff can check the situation inside the mixed flow chamber 4 by opening the flap 6. If the staff needs to take out the stirring blade 9 for maintenance, they first need to flip up the two flaps 6, and then press the lifting plate 14 downward. The vertical rod 15 fixedly connected to the lifting plate 14 can make the moving rack 16 drive the rotating gear 18 to rotate. Due to the connection effect of the connecting rod 19, the first bevel gear 20 will also rotate with the rotating gear 18, and then the second bevel gear 21 meshing with it will drive the center rod 22 to rotate. The adjustment rod 23 fixed on the side wall of the center rod 22 will squeeze the stirring blade 9 to a horizontal position that is convenient for taking out the stirring blade 9, thereby facilitating the staff to take out the stirring blade 9 for maintenance.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An intelligent control device for circulating water in a power plant, comprising a transfer box, an input pipe (1), an output pipe (2) and a plurality of drug inlet pipes (3), characterized in that: The transfer box comprises a mixed flow chamber (4), an intermediate plate (5) and two flaps (6), wherein the two flaps (6) are respectively hinged to two sides of the intermediate plate (5), the intermediate plate (5) and the two flaps (6) are both laid on the mixed flow chamber (4), the mixed flow chamber (4) is designed to be open at the top, the input pipe (1) is connected to one end of the mixed flow chamber (4), the output pipe (2) is connected to one end of the mixed flow chamber (4) away from the input pipe (1), and a plurality of drug inlet pipes (3) are respectively connected to the mixed flow chamber (4) and the output pipe (2) is connected to the end of the mixed flow chamber (4) away from the input pipe (1). (4) Different from the input pipe (1) and the output pipe (2) being connected at one end on the same side, the top wall of the intermediate plate (5) is fixedly connected to a servo motor (7), the output end of the servo motor (7) is fixedly connected to a rotating rod (8), the side wall of the rotating rod (8) is fixedly connected to two stirring blades (9), a drug mixing mechanism for placing drugs is provided between the rotating rod (8) and the mixed flow chamber (4), and two adjustment mechanisms for adjusting the position of the stirring blades (9) are respectively provided on the inner walls on both sides of the mixed flow chamber (4).

2. The intelligent control device for circulating water in a power plant according to claim 1 is characterized in that: The two stirring blades (9) are at different heights, and the two stirring blades (9) are located on the same straight line but are respectively located on two sides of the rotating rod (8).

3. The intelligent control device for circulating water in a power plant according to claim 1 is characterized in that: The drug mixing mechanism comprises a collecting plate (10), a plurality of guide grooves (11), a plurality of drug inlet holes (12) and a plurality of drug outlet holes (13); the collecting plate (10) is fixedly arranged on the side wall of the rotating rod (8); the collecting plate (10) is designed to be open at the upper end; the plurality of guide grooves (11) are respectively arranged at corresponding positions of the plurality of drug inlet pipes (3); the ends of the plurality of guide grooves (11) away from the drug inlet pipes (3) respectively point to the collecting plate (10); the plurality of drug inlet holes (12) are respectively arranged on the side wall of the rotating rod (8), and the plurality of drug inlet holes (12) are all arranged at the same height as the bottom of the collecting plate (10); the plurality of drug outlet holes (13) are also arranged on the side wall of the rotating rod (8), and the plurality of drug outlet holes (13) are all located above the stirring blade (9).

4. The intelligent control device for circulating water in a power plant according to claim 3 is characterized in that: The guide grooves (11) that are closer to the collection tray (10) are shorter than the guide grooves (11) that are farther away from the collection tray (10), the guide grooves (11) that are not directly facing the collection tray (10) are arranged obliquely, each of the guide grooves (11) is arranged obliquely downward, and one end of the guide grooves (11) close to the collection tray (10) is located obliquely above the collection tray (10).

5. The intelligent control device for circulating water in a power plant according to claim 1 is characterized in that: The adjustment mechanism comprises a lifting plate (14), two vertical rods (15), two moving racks (16), two fixed blocks (17), two rotating gears (18), two connecting rods (19), two first bevel gears (20), two second bevel gears (21), two center rods (22) and two adjusting rods (23); the two fixed blocks (17) are respectively fixedly connected to the inner walls of the mixed flow chamber (4) on both sides; the top wall of the fixed block (17) is provided with a through hole (24); the moving rack (16) is fixedly connected to the bottom of the vertical rod (15); the moving rack (16) passes through the through hole (24); the lifting plate (14) is fixedly connected to one end of the two vertical rods (15) away from the moving rack (16); the side wall of the lifting plate (14) is magnetically connected to the inner wall of the mixed flow chamber (4); a working cavity is provided in the fixed block (17); the through hole (24) is provided in the top wall of the fixed block (17); The hole (24) is connected to the inside of the working chamber, the rotating gear (18) is rotatably connected to the inner wall of the working chamber, the rotating gear (18) is meshed with the moving rack (16), one end of the connecting rod (19) is fixedly connected to the side wall of the rotating gear (18), and the other end is fixedly connected to the side wall of the first bevel gear (20), the fixed block (17) is provided with a placement groove (25) on the side wall facing the middle position of the mixed flow chamber (4), one end of the center rod (22) is rotatably connected to the side wall of the working chamber, and the other end passes through the side wall of the working chamber and is rotatably connected to the side wall of the placement groove (25), the second bevel gear (21) is fixedly connected to the side wall of the center rod (22), the first bevel gear (20) is meshed with the second bevel gear (21), the adjustment rod (23) is fixedly connected to the side wall of the center rod (22), and the adjustment rod (23) is located in the placement groove (25).

6. The intelligent control device for circulating water in a power plant according to claim 5 is characterized in that: The adjusting rod (23) is fixedly connected to a side wall on one side facing the middle position of the mixed flow chamber (4), wherein the end of the arc block (26) close to the lifting plate (14) is a high end, and the end away from the lifting plate (14) is a low end.

7. The intelligent control device for circulating water in a power plant according to claim 5, characterized in that: The length of the adjustment rod (23) is consistent with one third of the width of the mixed flow chamber (4); one end of the adjustment rod (23) fixed on the central rod (22) is designed to be arc-shaped.

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