A cooling water circulation chemical dosing system for thermal power plants

Abstract

The present invention discloses a dosing system for the cooling water circulation of a thermal power plant, which includes a water storage tank, a circulating water mechanism and a dosing mechanism. The dosing mechanism includes: a support plate, a chute, a chemical additive component, a stirring component, a height adjustment component, a driving component and a displacement component; the water storage tank is connected to the circulating water mechanism, and a support plate is installed inside the water storage tank. A plurality of chutes and chemical additives are provided on the support plate to facilitate the addition of chemicals to the cooling water inside the water storage tank; through the driving component, the stirring component can mix the cooling water and the chemicals inside the water storage tank, and at the same time, the driving component can drive the height adjustment component to adjust the height of the stirring component, which is convenient for stirring the cooling water at different depths; when the height adjustment component is working, the displacement component can be used to make the chemical additive move reciprocally along the chute, which is convenient for the chemical to be evenly sprayed inside the water storage tank and facilitates the full mixing of the chemical and the cooling water.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling water dosing, and particularly relates to a cooling water circulation dosing system for a thermal power plant. Background Art

[0002] Circulating cooling water is continuously recycled in the auxiliary circulating cooling water (CCW) system of a thermal power plant. It is necessary to regularly add water quality stabilizer agents, bactericides, etc., which can effectively control the scaling of the circulating cooling water system, control the corrosion of equipment and pipelines, and inhibit the growth of microorganisms in water. It is of great significance for meeting the water quality requirements of auxiliary process equipment, ensuring normal production, and extending the service life of equipment and pipelines.

[0003] When the existing cooling water circulation dosing system for a thermal power plant doses the reservoir, the agent cannot be quickly mixed with the cooling water, resulting in poor mixing effect between the local part of the cooling water and the agent, and affecting the use effect of the cooling water.

[0004] To avoid the above technical problems, it is necessary to provide a cooling water circulation dosing system for a thermal power plant to overcome the defects in the prior art. Summary of the Invention

[0005] The purpose of the invention is to provide a cooling water circulation dosing system for a thermal power plant to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the invention provides the following technical solutions:

[0007] A cooling water circulation dosing system for a thermal power plant includes a water storage tank, a circulating water mechanism, and a dosing mechanism. The dosing mechanism includes:

[0008] A support plate, fixedly installed inside the water storage tank and in a horizontal shape;

[0009] A plurality of chutes, evenly distributed on the support plate and penetrating through the support plate;

[0010] A chemical agent adding component, located inside the chute, for adding chemical agents to the cooling water inside the water storage tank;

[0011] A stirring component, installed in the middle of the support plate and located in the cooling water, for stirring the cooling water inside the water storage tank;

[0012] A height adjusting component, connected to the stirring component, for adjusting the stirring height of the stirring component;

[0013] A driving component, installed on the water storage tank, connected to the stirring component and the height adjustment component, for driving the stirring component to stir the cooling water and simultaneously driving the height adjustment component to adjust the stirring height;

[0014] A displacement component, connected to the chemical agent adding component and the stirring component, for driving the chemical agent adding component to move along the chute when the height of the stirring component changes.

[0015] As a further technical solution of the present invention: The stirring component includes:

[0016] A fixed cylinder, fixedly installed in the middle of the support plate and penetrating through the support plate;

[0017] Slot holes, located on the fixed cylinder and in a vertical shape;

[0018] A moving ring, sleeved outside the fixed cylinder;

[0019] A connecting rod, fixedly installed on the inner wall of the moving ring and passing through the slot holes;

[0020] A positioning ring, located inside the fixed cylinder, fixedly connected to the end of the connecting rod away from the moving ring, for following the moving ring to move on the fixed cylinder;

[0021] A rotating cylinder, installed inside the positioning ring, rotatably connected to the positioning ring and extending out of the bottom end of the fixed cylinder;

[0022] Spiral blades, installed on the outer side of the bottom end of the rotating cylinder, for rotating with the rotating cylinder and mixing the cooling water and the chemical agent inside the water storage tank.

[0023] As a further technical solution of the present invention: The driving component includes:

[0024] A driving member, fixedly installed in the middle of the top end of the water storage tank;

[0025] A driving rod, connected to the output end of the driving member and located inside the water storage tank;

[0026] A driving gear, fixedly installed at the end of the driving rod close to the driving member, rotating synchronously with the driving rod;

[0027] A rotating rod, installed at the top end of the fixed cylinder, rotatably connected to the fixed cylinder and in an uneven connection with the rotating cylinder; for rotating to drive the rotating cylinder and the spiral blades to rotate;

[0028] A rotating gear, fixedly installed at the top end of the rotating rod, meshed with the driving gear, for driving the rotating rod to rotate on the fixed cylinder when the driving rod and the driving gear rotate.

[0029] As a further technical solution of the present invention: The height adjustment assembly includes:

[0030] A rotating wheel, installed on the inner wall of the water storage tank, rotatably connected to the inner wall of the water storage tank, and connected to the driving rod, for rotating inside the water storage tank when the driving rod rotates;

[0031] A support rod, installed on the side of the rotating wheel close to the fixed cylinder and located away from the center of the rotating wheel;

[0032] A support frame, fixedly installed on the outside of the moving ring and in a horizontal shape. The support rod passes through the support frame and is used to drive the moving ring to move vertically along the fixed cylinder when the support rod rotates following the rotating wheel.

[0033] As a further technical solution of the present invention: The displacement assembly includes:

[0034] Rack bars, provided in multiple numbers and evenly distributed on the bottom side of the moving ring and in a vertical shape;

[0035] An adjusting rod, installed inside the sliding groove, with both ends rotatably connected to the sliding groove;

[0036] A connecting tooth, fixedly installed at one end of the adjusting rod close to the rack bar and meshed with the rack bar, for driving the connecting tooth and the adjusting rod to rotate inside the sliding groove when the rack bar moves vertically following the moving ring;

[0037] A slider, installed on the outside of the adjusting rod and connected to the chemical agent adding assembly, for driving the chemical agent adding assembly to move inside the sliding groove when the adjusting rod rotates.

[0038] As a further technical solution of the present invention: The chemical agent adding assembly includes:

[0039] A moving frame, fixedly connected to the slider and located inside the sliding groove;

[0040] Limiting wheels, installed at both ends of the moving frame and in contact with the support plate, for reducing the friction between the moving frame and the sliding groove;

[0041] A liquid storage tank, fixedly installed on the moving frame for storing the chemical agent;

[0042] A valve, installed at the bottom end of the liquid storage tank for opening and closing the liquid storage tank;

[0043] A sprayer, connected to the valve for spraying the chemical agent into the inner side of the water storage tank.

[0044] As a further technical solution of the present invention: The cooling water circulation chemical dosing system of the thermal power plant further includes: a pH detector, which is provided in multiple numbers and evenly distributed on the inner wall of the storage tank, and is used to detect the pH value of the cooling water inside the storage tank.

[0045] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0046] A cooling water circulation chemical dosing system provided by the present invention, wherein the storage tank is connected to the circulating water mechanism, and a support plate is installed inside the storage tank. A plurality of chutes and chemical additives are provided on the support plate, which is convenient for adding chemicals to the cooling water inside the storage tank; through the driving assembly, the stirring assembly can mix the cooling water and chemicals inside the storage tank, and at the same time, the driving assembly can drive the height adjustment assembly to adjust the height of the stirring assembly, which is convenient for stirring the cooling water at different depths; when the height adjustment assembly is working, the displacement assembly can be used to make the chemical additive reciprocate along the chute, which is convenient for the chemical to be evenly sprayed inside the storage tank and facilitates the full mixing of the chemical and the cooling water. Description of the Drawings

[0047] Figure 1 It is a structural schematic diagram of the present invention.

[0048] Figure 2 It is a structural schematic diagram of the inside of the storage tank of the present invention.

[0049] Figure 3 It is a structural schematic diagram of the support plate, chute and chemical addition assembly of the present invention.

[0050] Figure 4 It is a structural schematic diagram between the moving ring, support frame and rotating cylinder of the present invention.

[0051] Figure 5 It is a structural schematic diagram of the driving assembly of the present invention.

[0052] Figure 6 It is a connection structural schematic diagram between the fixed cylinder, rotating rod and rotating teeth of the present invention.

[0053] In the accompanying drawings: 1 - water storage tank, 2 - circulating water mechanism, 3 - support plate, 4 - chute, 5 - chemical addition component, 51 - moving frame, 52 - limiting wheel, 53 - liquid storage tank, 54 - valve, 55 - sprayer, 6 - stirring component, 61 - fixed cylinder, 62 - slot hole, 63 - moving ring, 64 - connecting rod, 65 - positioning ring, 66 - rotating cylinder, 67 - spiral blade, 7 - height adjustment component, 71 - rotating wheel, 72 - support rod, 73 - support frame, 8 - driving component, 81 - driving part, 82 - driving rod, 83 - driving tooth, 84 - rotating rod, 85 - rotating tooth, 9 - displacement component, 91 - rack, 92 - adjusting rod, 93 - connecting tooth, 94 - slider, 10 - pH detector. Detailed implementation manners

[0054] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to 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 used to limit the present invention.

[0055] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0056] As Figures 1 to 6 shown, in the embodiment provided by the present invention, a chemical addition system for cooling water circulation in a thermal power plant includes a water storage tank 1, a circulating water mechanism 2 and a chemical addition mechanism. The chemical addition mechanism includes:

[0057] A support plate 3, fixedly installed inside the water storage tank 1 and being horizontal;

[0058] Chutes 4, provided in plurality and evenly distributed on the support plate 3 and penetrating through the support plate 3;

[0059] A chemical addition component 5, located inside the chute 4, for adding chemicals to the cooling water inside the water storage tank 1;

[0060] A stirring component 6, installed in the middle of the support plate 3 and located in the cooling water, for stirring the cooling water inside the water storage tank 1;

[0061] A height adjustment component 7, connected to the stirring component 6, for adjusting the stirring height of the stirring component 6;

[0062] A driving component 8, installed on the water storage tank 1, connected to the stirring component 6 and the height adjustment component 7, for driving the stirring component 6 to stir the cooling water and simultaneously driving the height adjustment component 7 to adjust the stirring height;

[0063] The displacement component 9 is connected to the medicine adding component 5 and the stirring component 6, and is used to drive the medicine adding component 5 to move along the chute 4 when the stirring component 6 changes height.

[0064] In this embodiment, the water tank 1 is connected to the circulating water mechanism 2, and a support plate 3 is installed on the inside of the water tank 1. A plurality of chutes 4 and chemical additives are provided on the support plate 3, which are convenient for adding chemical to the cooling water inside the water tank 1; the driving component 8 can realize the stirring component 6 to mix the cooling water and chemical inside the water tank 1, and at the same time, the driving component 8 can drive the height adjustment component 7 to adjust the height of the stirring component 6, which is convenient for stirring cooling water of different depths; when the height adjustment component 7 is working, the chemical additive can be realized by the displacement component 9. The reciprocating motion of the chemical additive along the chute 4 is convenient for the chemical to be evenly sprayed on the inside of the water tank 1, so that the chemical and cooling water are fully mixed; the shape of the support plate 3 is circular, and the chute 4 is provided with multiple and is evenly distributed on the support plate 3 in the form of long strips, and the number of the chute 4 and the chemical adding component 5 is the same.

[0065] In one embodiment of the present invention, see Figure 2 、 Figure 4 and Figure 6 , the stirring assembly 6 includes:

[0066] The fixing cylinder 61 is fixedly mounted in the middle of the support plate 3 and passes through the support plate 3;

[0067] The slot 62 is located on the fixing cylinder 61 and is vertical;

[0068] The movable ring 63 is sleeved on the outside of the fixed cylinder 61;

[0069] A connecting rod 64 is fixedly mounted on the inner wall of the movable ring 63 and passes through the slot 62;

[0070] A positioning ring 65 is located inside the fixed cylinder 61 and is fixedly connected to the end of the connecting rod 64 away from the movable ring 63, and is used to move along with the movable ring 63 on the fixed cylinder 61;

[0071] The rotating cylinder 66 is mounted on the inner side of the positioning ring 65, is rotatably connected to the positioning ring 65, and extends out of the bottom end of the fixed cylinder 61;

[0072] The spiral blade 67 is installed on the outer side of the bottom end of the rotating cylinder 66 to rotate with the rotating cylinder 66 and mix the cooling water and the medicine inside the water storage tank 1.

[0073] In this embodiment, the fixed cylinder 61 is fixedly installed in the middle of the support plate 3. The fixed cylinder 61 is vertical. There are slot holes 62 on the fixed cylinder 61. There are multiple slot holes 62 and they are evenly distributed on the fixed cylinder 61. The slot holes 62 are vertical. A moving ring 63 is sleeved outside the fixed cylinder 61. The moving ring 63 can move vertically along the fixed cylinder 61. A connecting rod 64 is fixedly installed on the inner wall of the moving ring 63. One end of the connecting rod 64 away from the inner wall of the moving ring 63 is fixedly installed with a positioning ring 65. The connecting rod 64 passes through the slot hole 62 and can move along the slot hole 62. The positioning ring 65 is located inside the fixed cylinder 61. The positioning ring 65 can move synchronously with the moving ring 63 through the connecting rod 64 and the slot hole 62. A rotating cylinder 66 is installed inside the positioning ring 65. A rolling bearing is installed between the rotating cylinder 66 and the positioning ring 65. The rotating cylinder 66 can rotate on the positioning ring 65. The rotating cylinder 66 is located inside the fixed cylinder 61. The rotating cylinder 66 extends out of the bottom end of the fixed cylinder 61 and contacts the cooling water. A spiral blade 67 is fixedly installed on the outer wall of the bottom end of the rotating cylinder 66. The spiral blade 67 can rotate following the rotating cylinder 66, which is convenient for mixing the cooling water and the medicine.

[0074] In an embodiment of the present invention, please refer to Figure 2 , Figure 5 and Figure 6 , the driving assembly 8 includes:

[0075] A driving member 81, fixedly installed in the middle of the top end of the water storage tank 1;

[0076] A driving rod 82, connected to the output end of the driving member 81 and located inside the water storage tank 1;

[0077] A driving gear 83, fixedly installed at one end of the driving rod 82 close to the driving member 81 and rotating synchronously with the driving rod 82;

[0078] A rotating rod 84, installed at the top end of the fixed cylinder 61, rotatably connected to the fixed cylinder 61 and in concave-convex connection with the rotating cylinder 66; used to rotate and drive the rotating cylinder 66 and the spiral blade 67 to rotate;

[0079] A rotating gear 85, fixedly installed at the top end of the rotating rod 84 and meshed with the driving gear 83, used to drive the rotating rod 84 to rotate on the fixed cylinder 61 when the driving rod 82 and the driving gear 83 rotate.

[0080] In this embodiment, the driving member 81 is fixedly installed in the middle of the top end of the water storage tank 1. The driving member 81 can be a rotary motor or a stepping motor, etc. In this embodiment, the driving member 81 is a rotary motor. A driving rod 82 is fixedly installed at the output end of the driving member 81. The driving rod 82 is located inside the water storage tank 1 and is vertical. A driving gear 83 is fixedly installed at one end of the driving rod 82 close to the driving member 81. A rotating rod 84 is installed inside the fixed cylinder 61. A rolling bearing is installed between the rotating rod 84 and the fixed cylinder 61. The rotating rod 84 can rotate on the fixed cylinder 61. The cross-sectional shape of the rotating rod 84 is cross-shaped. The rotating rod 84 is in concave-convex connection with the rotating cylinder 66. The rotating rod 84 can drive the rotating cylinder 66 to rotate and can still drive the rotating cylinder 66 to rotate when the rotating cylinder 66 is in the vertical position. A rotating gear 85 is fixedly installed at the top end of the rotating rod 84. The driving gear 83 and the rotating gear 85 are on the same horizontal line, and the driving gear 83 is meshed with the rotating gear 85. When the driving member 81 controls the driving rod 82 to rotate, the rotating rod 84 can rotate on the fixed cylinder 61 through the driving gear 83 and the connecting gear 93, and further the rotating cylinder 66 and the spiral blade 67 can be rotated.

[0081] In one embodiment of the present invention, please refer to Figure 2 and Figure 4 , the height adjusting assembly 7 includes:

[0082] A rotating wheel 71, installed on the inner wall of the water storage tank 1, rotatably connected to the inner wall of the water storage tank 1, and connected to the driving rod 82, for rotating inside the water storage tank 1 when the driving rod 82 rotates;

[0083] A support rod 72, installed on one side of the rotating wheel 71 close to the fixed cylinder 61 and located at a position away from the center of the rotating wheel 71;

[0084] A support frame 73, fixedly installed on the outer side of the moving ring 63 and horizontal. The support rod 72 passes through the support frame 73, for driving the moving ring 63 to move vertically along the fixed cylinder 61 when the support rod 72 rotates following the rotating wheel 71.

[0085] In this embodiment, the rotating wheel 71 is installed on the inner wall of the water storage tank 1. A short rod is fixedly installed in the middle of the rotating wheel 71. A rolling bearing is installed between the short rod and the inner wall of the water storage tank 1 to facilitate the stable rotation of the rotating wheel 71 inside the water storage tank 1. A support rod 72 is fixedly installed on the side of the rotating wheel 71 away from the short rod. The support rod 72 is located at a position away from the center of the rotating wheel 71 and can rotate with the rotating wheel 71. A support frame 73 is fixedly installed on the outer wall of the moving ring 63. A linear through hole is provided inside the support frame 73. The support rod 72 is located inside the through hole. When the support rod 72 rotates with the rotating wheel 71, it is convenient to drive the support frame 73 and the moving ring 63 to move vertically along the fixed cylinder 61. The rotating wheel 71, the support rod 72, and the support frame 73 are all provided with two and are symmetrically installed on both sides of the moving ring 63. The driving rod 82 is a worm in this embodiment, and the rotating wheel 71 is a worm wheel in this embodiment. The rotating rod 84 is connected to the driving rod 82. When the driving rod 82 drives the driving tooth 83 to rotate, it is convenient to drive the rotating wheel 71 to rotate, facilitating the vertical height change of the rotating cylinder 66 driven by the moving ring 63 and the positioning ring 65.

[0086] In one embodiment of the present invention, please refer to Figure 3 and Figure 4 , the displacement assembly 9 includes:

[0087] A plurality of racks 91 are provided and are evenly distributed on the bottom side of the moving ring 63 and are vertical;

[0088] An adjusting rod 92 is installed inside the sliding groove 4, and both ends are rotatably connected to the sliding groove 4;

[0089] A connecting tooth 93 is fixedly installed at one end of the adjusting rod 92 close to the rack 91 and is meshed with the rack 91, for driving the connecting tooth 93 and the adjusting rod 92 to rotate inside the sliding groove 4 when the rack 91 follows the moving ring 63 to move vertically;

[0090] A slider 94 is installed on the outer side of the adjusting rod 92 and is connected to the chemical agent adding assembly 5, for driving the chemical agent adding assembly 5 to move inside the sliding groove 4 when the adjusting rod 92 rotates.

[0091] In this embodiment, the rack 91 is fixedly installed on the bottom side of the moving ring 63. The rack 91 is vertical, and the number of the racks 91 is the same as that of the sliding grooves 4. A plurality of racks 91 are evenly distributed on the bottom side of the moving ring 63. The rack 91 can move vertically following the moving ring 63. An adjusting rod 92 is fixedly installed inside the sliding groove 4. The length of the adjusting rod 92 is the same as that of the sliding groove 4. Rolling bearings are installed between both ends of the adjusting rod 92 and the inner wall of the sliding groove 4. The adjusting rod 92 can rotate stably inside the sliding groove 4. A connecting tooth 93 is fixedly installed at one end of the adjusting rod 92 close to the rack 91. The connecting tooth 93 is meshed with the rack 91. When the rack 91 moves following the moving ring 63, it is convenient to drive the connecting tooth 93 and the adjusting rod 92 to rotate inside the sliding groove 4. A slider 94 is installed on the outer side of the adjusting rod 92. The slider 94 is connected to the chemical agent adding assembly 5. The adjusting rod 92 is a threaded rod in this embodiment. A threaded hole is provided in the middle of the slider 94. The inner side of the threaded hole is threadedly connected to the outer side of the adjusting rod 92. When the adjusting rod 92 rotates, it is convenient to drive the slider 94 to drive the chemical agent adding assembly 5 to move inside the sliding groove 4. By means of the rotary wheel 71, the support rod 72 and the support frame 73, the moving ring 63 can be driven to move reciprocally in the vertical direction, and further, the slider 94 and the chemical agent adding assembly 5 can move reciprocally in the horizontal direction inside the sliding groove 4, which is convenient for evenly adding the chemical agent into the water storage tank 1, with convenient operation and easy use.

[0092] In one embodiment of the present invention, please refer to Figure 2 , the chemical agent adding assembly 5 includes:

[0093] A moving frame 51, fixedly connected to the slider 94 and located inside the sliding groove 4;

[0094] A limiting wheel 52, installed at both ends of the moving frame 51 and in contact with the support plate 3, for reducing the friction between the moving frame 51 and the sliding groove 4;

[0095] A liquid storage tank 53, fixedly installed on the moving frame 51, for storing the chemical agent;

[0096] A valve 54, installed at the bottom end of the liquid storage tank 53, for opening and closing the liquid storage tank 53;

[0097] A sprayer 55, connected to the valve 54, for spraying the chemical agent into the water storage tank 1.

[0098] In this embodiment, the movable frame 51 is fixedly connected to one side of the slider 94. The movable frame 51 is located inside the sliding groove 4. On both sides of the top end of the movable frame 51, limit wheels 52 are fixedly installed. The limit wheels 52 are in contact with the upper surface of the support plate 3, facilitating the position movement of the movable frame 51 along the sliding groove 4. At the top end of the movable frame 51, a liquid storage tank 53 is fixedly installed. Inside the liquid storage tank 53, a medicament is stored. At the bottom end of the liquid storage tank 53, a valve 54 is installed. The valve 54 facilitates the opening and closing of the liquid storage tank 53, and facilitates the outflow of the medicament from the inside of the liquid storage tank 53. At the bottom side of the valve 54, a sprayer 55 is fixedly installed, facilitating the spraying of the medicament into the inside of the water storage tank 1 for convenient use.

[0099] In an embodiment of the present invention, please refer to Figure 2 , the cooling water circulation chemical dosing system of the thermal power plant further includes: a pH detector 10, which is provided in multiple numbers and evenly distributed on the inner wall of the water storage tank 1 for detecting the pH value of the cooling water inside the water storage tank 1. The pH detector 10 is located at different depths inside the water storage tank 1, facilitating the pH detection of the cooling water at different depths and facilitating the addition of the medicament.

[0100] The working principle of the present invention is:

[0101] In the present invention, first, the cooling water inside the water storage tank 1 is detected by the pH detector 10. When the medicament needs to be added, the driving member 81 and the valve 54 are opened. At this time, the medicament inside the liquid storage tank � enters the sprayer 55 through the valve 54. The medicament is sprayed into the inside of the water storage tank 1 through the sprayer 55. At this time, the driving rod 82 rotates the rotating rod 84 on the fixed cylinder 61 through the driving gear 83 and the rotating gear 85, facilitating the rotation of the rotating cylinder 66 and the spiral blade 67, and facilitating the mixing of the medicament and the cooling water. The driving rod 82 is connected to the rotating wheel 71. Through the support rod 72 and the support frame 73, the moving ring 63 can be moved vertically along the fixed cylinder 61. At this time, the spiral blade 67 and the rotating cylinder 66 follow the moving ring 63 to perform vertical reciprocating motions and rotate simultaneously, facilitating the full mixing of the medicament and the cooling water. When the moving ring 63 moves in position, the sprayer 55 can perform horizontal reciprocating motions through the rack 91, the connecting gear 93, the adjusting rod 92, and the slider 94, facilitating the mixing of the medicament and the cooling water. The operation is convenient, and the medicament and the cooling water can be quickly mixed.

[0102] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

[0103] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cooling water circulation chemical dosing system for a thermal power plant, comprising a water storage tank, a circulating water mechanism and a chemical dosing mechanism, characterized in that, The chemical addition mechanism includes: A support plate, fixedly installed inside the water storage tank and in a horizontal shape; A plurality of chutes, evenly distributed on the support plate and penetrating the support plate; A chemical addition component, located inside the chute, for adding chemicals to the cooling water inside the water storage tank; A stirring component, installed in the middle of the support plate and located in the cooling water, for stirring the cooling water inside the water storage tank; A height adjustment component, connected to the stirring component, for adjusting the stirring height of the stirring component; A driving component, installed on the water storage tank, connected to the stirring component and the height adjustment component, for driving the stirring component to stir the cooling water and simultaneously driving the height adjustment component to adjust the stirring height; A displacement component, connected to the chemical addition component and the stirring component, for driving the chemical addition component to move along the chute when the stirring component changes in height; The stirring component includes: A fixed cylinder, fixedly installed in the middle of the support plate and penetrating the support plate; Slot holes, located on the fixed cylinder and in a vertical shape; A moving ring, sleeved outside the fixed cylinder; A connecting rod, fixedly installed on the inner wall of the moving ring and passing through the slot hole; A positioning ring, located inside the fixed cylinder, fixedly connected to the end of the connecting rod away from the moving ring, for moving along with the moving ring on the fixed cylinder; A rotating cylinder, installed inside the positioning ring, rotatably connected to the positioning ring and extending out of the bottom end of the fixed cylinder; A spiral blade, installed outside the bottom end of the rotating cylinder, for rotating along with the rotating cylinder and mixing the cooling water and chemicals inside the water storage tank; The fixed cylinder is fixedly installed in the middle of the support plate, the fixed cylinder is in a vertical shape, the fixed cylinder is provided with slot holes, a plurality of slot holes are evenly distributed on the fixed cylinder, the slot holes are in a vertical shape, a moving ring is sleeved outside the fixed cylinder, the moving ring can move vertically along the fixed cylinder, a connecting rod is fixedly installed on the inner wall of the moving ring, the end of the connecting rod away from the inner wall of the moving ring is fixedly installed with a positioning ring, the connecting rod passes through the slot hole and can move along the slot hole, the positioning ring is located inside the fixed cylinder, the positioning ring can move synchronously with the moving ring through the connecting rod and the slot hole, a rotating cylinder is installed inside the positioning ring, a rolling bearing is installed between the rotating cylinder and the positioning ring, the rotating cylinder can rotate on the positioning ring, the rotating cylinder is located inside the fixed cylinder, the rotating cylinder extends out of the bottom end of the fixed cylinder and contacts the cooling water, a spiral blade is fixedly installed on the outer wall of the bottom end of the rotating cylinder, the spiral blade can rotate along with the rotating cylinder, which is convenient for mixing the cooling water and chemicals; The displacement component includes: A plurality of racks, evenly distributed on the bottom side of the moving ring and in a vertical shape; An adjusting rod, installed inside the chute, with both ends rotatably connected to the chute; The connecting tooth is fixedly installed at one end of the adjusting rod close to the rack and is meshed with the rack. It is used to drive the connecting tooth and the adjusting rod to rotate inside the sliding groove when the rack follows the moving ring to move vertically. The slider is installed outside the adjusting rod and is connected to the chemical agent adding component. It is used to drive the chemical agent adding component to move inside the sliding groove when the adjusting rod rotates.

2. The cooling water circulation chemical dosing system for a thermal power plant according to claim 1, wherein, The driving component includes: The driving part is fixedly installed in the middle of the top end of the water storage tank. The driving rod is connected to the output end of the driving part and is located inside the water storage tank. The driving tooth is fixedly installed at one end of the driving rod close to the driving part and rotates synchronously with the driving rod. The rotating rod is installed at the top end of the fixed cylinder, is rotatably connected to the fixed cylinder, and is in concave-convex connection with the rotating cylinder. It is used to drive the rotating cylinder and the spiral blade to rotate by rotation. The rotating tooth is fixedly installed at the top end of the rotating rod and is meshed with the driving tooth. It is used to drive the rotating rod to rotate on the fixed cylinder when the driving rod and the driving tooth rotate.

3. The cooling water circulation chemical dosing system for a thermal power plant according to claim 2, characterized in that, The height adjusting component includes: The rotating wheel is installed on the inner wall of the water storage tank, is rotatably connected to the inner wall of the water storage tank, and is connected to the driving rod. It is used to rotate inside the water storage tank when the driving rod rotates. The support rod is installed on one side of the rotating wheel close to the fixed cylinder and is located away from the center of the rotating wheel. The support frame is fixedly installed outside the moving ring and is horizontal. The support rod passes through the support frame and is used to drive the moving ring to move vertically along the fixed cylinder when the support rod follows the rotating wheel to rotate.

4. The cooling water circulation chemical dosing system for a thermal power plant according to claim 1, wherein The chemical agent adding component includes: The moving frame is fixedly connected to the slider and is located inside the sliding groove. The limiting wheels are installed at both ends of the moving frame and are in contact with the support plate, and are used to reduce the friction between the moving frame and the sliding groove. The liquid storage tank is fixedly installed on the moving frame and is used to store the chemical agent. The valve is installed at the bottom end of the liquid storage tank and is used to open and close the liquid storage tank. The sprayer is connected to the valve and is used to spray the chemical agent into the water storage tank.

5. The cooling water circulation chemical dosing system for a thermal power plant according to claim 1, characterized in that, The cooling water circulation chemical dosing system of the thermal power plant further includes: a plurality of pH detectors evenly distributed on the inner wall of the water storage tank and used to detect the pH value of the cooling water inside the water storage tank.

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