Intelligent chemical feeding control device for circulating cooling water of thermal power plant
By designing a dilution tank, mixing mechanism, and feeding control in the circulating cooling water system of thermal power plants, the problem of uneven dispersion of scale inhibitors was solved, achieving uniform distribution of the agent and improving the scale removal effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-03-31
AI Technical Summary
In existing circulating cooling water systems, scale inhibitors cannot disperse quickly after being added, resulting in excessively high local concentrations, uneven descaling effects, and impact on equipment performance and service life.
A smart dosing control device for circulating cooling water in thermal power plants was designed. The device uses a dilution tank and a mixing mechanism to ensure that the scale inhibitor is fully mixed with the water after dilution. The feeding mechanism controls the feeding speed, and the device is combined with a stirring and ventilation mechanism to ensure uniform distribution of the agent.
This method achieves uniform dosing of scale inhibitors, prevents excessively high local concentrations, improves descaling efficiency, and extends the service life of the equipment.
Smart Images
Figure CN224057276U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a dosing control device, concretely is a thermal power plant circulating cooling water intelligent dosing control device belongs to the technical field of circulating cooling water. BACKGROUND
[0002] The thermal power plant is a kind of power plant using fossil fuel combustion to generate heat energy, and then converts into electric energy, its basic principle is to convert chemical energy into heat energy by burning fuel, and then converts heat energy into mechanical energy by steam driving turbine, and finally converts mechanical energy into electric energy by generator, the thermal power plant needs to use circulating cooling water system to maintain the normal operation of power plant during operation, through the circulation of cooling medium with the outside world, uninterrupted heat exchange is carried out, so as to achieve the purpose of maintaining the temperature stability of unit, and it has been widely used at present.
[0003] The existing circulating cooling device, after long-term use, circulating cooling water evaporates with temperature rising and heat dissipation, which can easily cause fouling of cooling equipment and pipeline, resulting in poor operation, in order to avoid fouling of cooling equipment and pipeline, the existing one generally adds scale inhibitor to cooling water, which can effectively remove dirt in equipment, prevent dirt from damaging equipment, and affect equipment performance and service life, the existing one generally adds scale inhibitor to circulating cooling water through pipeline at one time, but due to the high concentration of scale inhibitor, the existing one cannot be dispersed rapidly in water after addition, resulting in too high concentration of scale inhibitor in local area after addition, which leads to uneven descaling effect, therefore, we provide a thermal power plant circulating cooling water intelligent dosing control device to solve the above problems. CONTENT OF UTILITY MODEL
[0004] To solve the above problems, the utility model provides a thermal power plant circulating cooling water intelligent dosing control device to solve the above problems, and the specific technical scheme is:
[0005] A thermal power plant circulating cooling water intelligent dosing control device, comprising a protective shell, a liquid storage barrel and a dilution barrel are installed in the inside of the protective shell, the liquid storage barrel is located above the dilution barrel, a discharging mechanism is arranged between the liquid storage barrel and the dilution barrel, a stirring mechanism is arranged below the discharging mechanism, the stirring mechanism is located in the inside of the dilution barrel, a power mechanism is arranged outside the discharging mechanism, a ventilation mechanism is arranged on the upper part of the dilution barrel, a feed pipe and a reflux pipe are connected to the lower part of the dilution barrel, and a mixing mechanism is arranged on the end of the feed pipe away from the dilution barrel.
[0006] Preferably, the mixing mechanism comprises a fixed box, the outer surface of the fixed box is fixedly connected with the protective shell, a water inlet pipe is connected to the lower part of the fixed box, a water outlet pipe is connected to the upper part of the fixed box, and the water inlet pipe and the water outlet pipe both penetrate through the protective shell and extend to the outside.
[0007] Preferably, the feeding pipe is connected with the fixing box at one end away from the dilution barrel, and a conveying pump is installed on the feeding pipe.
[0008] Preferably, the return pipe is connected with the water inlet pipe at one end away from the dilution barrel, and an electric valve is installed on the return pipe.
[0009] Preferably, a partition plate is fixedly installed inside the fixing box, and a plurality of baffles are installed on the outer surface of the partition plate and the inner wall of the fixing box, and the baffles are staggered.
[0010] Preferably, the discharging mechanism comprises a fixed cylinder, the lower surface of the fixed cylinder is fixedly connected with the inner bottom wall of the liquid storage barrel, a rotating cylinder is rotatably connected with the inner wall of the fixed cylinder, and the lower part of the rotating cylinder is rotatably connected with the dilution barrel.
[0011] Preferably, the stirring mechanism comprises a support rod, the upper end of the support rod is fixedly connected with the rotating cylinder, and a stirring rod is fixedly connected with the outer surface of the support rod.
[0012] Preferably, the power mechanism comprises an electric assembly, the output end of the electric assembly is drivingly connected with a belt, and one end of the belt away from the electric assembly is drivingly connected with the rotating cylinder.
[0013] Preferably, the ventilation mechanism comprises an air outlet ring, the upper surface of the air outlet ring is fixedly connected with the dilution barrel, and a protective plate is connected with the lower surface of the air outlet ring.
[0014] Preferably, a transparent plate is installed on the outer surface of the protective shell, a cover plate is detachably connected with the upper end of the protective shell, and a feeding port is installed on the upper end of the liquid storage barrel.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. The power plant circulating cooling water intelligent dosing control device sets the dilution barrel and the mixing mechanism and other components, first makes the circulating water reverse flow to the inside of the dilution barrel, then the power mechanism drives the discharging mechanism to rotate, makes the solvent in the liquid storage barrel downwardly enter the inside of the dilution barrel, then through the rotation of the stirring mechanism, makes the solvent and the water in the dilution barrel fully blend, thereby dilutes the scale inhibitor, reduces the concentration of the reagent, then slowly injects the diluted scale inhibitor into the inside of the mixing mechanism, makes the flowing water flow and the diluted scale inhibitor mix, thereby reaches the effect of uniform dosing, prevents the concentration of the scale inhibitor in the circulating water from being too high, thereby solves the problems that the existing scale remover cannot rapidly disperse in water, causes the concentration of the scale inhibitor to be too large after being added, and causes the scale removal effect to be uneven.
[0017] 2. The power plant circulating cooling water intelligent dosing control device sets the discharging mechanism, the ventilation mechanism and other components, a circular hole is formed on the fixed cylinder and the rotating cylinder, when the rotating cylinder rotates, the two circular holes can coincide, so that the scale inhibitor in the liquid storage barrel enters the inside of the rotating cylinder, when the two circular holes are staggered, the lower part of the liquid storage barrel can be sealed, the discharging is carried out through the rotation of the rotating cylinder, so as to reduce the discharging speed, make the solvent flow slowly downward, the air in the dilution barrel can pass through the upper part of the protection plate and the air outlet ring and the outside to flow, so as to stabilize the air pressure in the dilution barrel, prevent that the air pressure is too large or too small to cause the liquid in the inside to flow not smoothly. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the whole structure schematic diagram of the utility model;
[0019] Figure 2 It is the sectional view of the protective shell in the utility model;
[0020] Figure 3 It is the sectional view of the dilution barrel in the utility model;
[0021] Figure 4 It is the sectional view of the rotating cylinder in the utility model;
[0022] Figure 5 It is the sectional view of the protection plate in the utility model;
[0023] Figure 6 It is the three-dimensional structure schematic diagram of the feed pipe in the utility model;
[0024] Figure 7 It is the sectional view of the fixed box in the utility model.
[0025] BRIEF DESCRIPTION OF DRAWINGS: 1, protective shell;2, liquid storage barrel;3, dilution barrel;4, discharging mechanism;401, fixed cylinder;402, rotating cylinder;5, stirring mechanism;501, support rod;502, stirring rod;6, power mechanism;601, electric component;602, belt;7, ventilation mechanism;701, air outlet ring;702, protection plate;8, feed pipe;9, mixing mechanism;901, fixed box;902, partition;903, baffle;10, return pipe;11, conveying pump;12, electric valve;13, water inlet pipe;14, water outlet pipe;15, transparent plate;16, cover plate;17, feed inlet. DETAILED DESCRIPTION
[0026] The utility model will be further described in connection with the drawings.
[0027] Please refer to Figures 1-7The utility model provides a kind of water circulating system, including protective shell 1, the inside of protective shell 1 is equipped with liquid storage barrel 2 and dilution barrel 3, liquid storage barrel 2 is located above dilution barrel 3, be equipped with dosing mechanism 4 between liquid storage barrel 2 and dilution barrel 3, dosing mechanism 4 below is equipped with stirring mechanism 5, stirring mechanism 5 is located inside dilution barrel 3, dosing mechanism 4 outside is equipped with power mechanism 6, dilution barrel 3 upper portion is equipped with ventilation mechanism 7, dilution barrel 3 lower portion is connected with feed pipe 8 and reflux pipe 10, feed pipe 8 is equipped with mixing mechanism 9 at the end far from dilution barrel 3, protective shell 1 separates all components inside from outside, to facilitate the protection of internal components, while increasing the aesthetic, the inside of liquid storage barrel 2 stores scale inhibitor, when using, by dosing mechanism 4 can enter the inside of dilution barrel 3, again by stirring mechanism 5 and the water in dilution barrel 3 inside mixes, again passes through feed pipe 8 and enters the inside of mixing mechanism 9, to mix with circulating water.
[0028] Mixing mechanism 9 includes fixed box 901, the outer surface of fixed box 901 is fixedly connected with protective shell 1, the lower part of fixed box 901 is connected with water inlet pipe 13, the upper part of fixed box 901 is connected with water outlet pipe 14, water inlet pipe 13 and water outlet pipe 14 are all penetrated through protective shell 1 and extend to outside, water inlet pipe 13 and water outlet pipe 14 are connected with external water circulating pipeline, when external power device makes circulating water flow, water can enter the inside of fixed box 901 at water inlet pipe 13, after mixing with scale inhibitor, again flows out from water outlet pipe 14.
[0029] The end far from dilution barrel 3 of feed pipe 8 is connected with fixed box 901, conveying pump 11 is installed on feed pipe 8, by conveying pump 11, liquid in the inside of dilution barrel 3 can be conveyed to the inside of mixing mechanism 9, to make diluted scale inhibitor mix with circulating water.
[0030] The end far from dilution barrel 3 of feed pipe 8 is connected with fixed box 901, conveying pump 11 is installed on feed pipe 8, by conveying pump 11, liquid in the inside of dilution barrel 3 can be conveyed to the inside of mixing mechanism 9, to make diluted scale inhibitor mix with circulating water.
[0031] Fixed box 901 is fixedly installed with baffle 902 inside, the outer surface of baffle 902 and the inner wall of fixed box 901 are all installed with multiple baffles 903, multiple baffles 903 are staggered distribution, in the process of circulating water flow, under the action of baffle 902, water flow moves back and forth in fixed box 901 multiple times, finally flows out at water outlet pipe 14, while under the action of multiple baffles 903, water flow moves in S-shaped trajectory, water flow will impact baffle 903, increase the mixing degree between water flow, to increase the mixing effect of water flow and diluted scale inhibitor.
[0032] The discharging mechanism 4 comprises a fixed cylinder 401, the lower surface of the fixed cylinder 401 is fixedly connected with the inner bottom wall of the liquid storage barrel 2, the inner wall of the fixed cylinder 401 is rotationally connected with a rotating cylinder 402, the lower part of the rotating cylinder 402 is rotationally connected with the dilution barrel 3, a circular hole is formed in the fixed cylinder 401 and the rotating cylinder 402, when the rotating cylinder 402 rotates, the two circular holes can coincide, so that the scale inhibitor in the liquid storage barrel 2 enters the inside of the rotating cylinder 402, when the two circular holes are staggered, the lower part of the liquid storage barrel 2 can be sealed, the discharging is realized by rotating the rotating cylinder 402, so as to reduce the discharging speed and make the solvent flow slowly downwards.
[0033] The stirring mechanism 5 comprises a supporting rod 501, the upper end of the supporting rod 501 is fixedly connected with the rotating cylinder 402, the outer surface of the supporting rod 501 is fixedly connected with a stirring rod 502, when the rotating cylinder 402 rotates, the supporting rod 501 and the stirring rod 502 can be driven to rotate, so as to stir the liquid in the dilution barrel 3.
[0034] The power mechanism 6 comprises an electric assembly 601, the output end of the electric assembly 601 is drivingly connected with a belt 602, the end, away from the electric assembly 601, of the belt 602 is drivingly connected with the rotating cylinder 402, the electric assembly 601 is composed of a servo motor and a speed change assembly, the electric assembly 601 can drive the rotating cylinder 402 to rotate through the belt 602, the speed change assembly is used for preventing the rotating speed of the rotating cylinder 402 from being too fast, the servo motor can control the rotating angle, when the rotation is stopped, the circular hole on the rotating cylinder 402 can be staggered with the circular hole on the fixed cylinder 401, so as to seal the liquid storage barrel 2, the both ends of the belt 602 are further provided with belt pulleys, so as to increase the stability of the transmission.
[0035] The ventilation mechanism 7 comprises an air outlet ring 701, the upper surface of the air outlet ring 701 is fixedly connected with the dilution barrel 3, the lower surface of the air outlet ring 701 is connected with a protective plate 702, the upper part of the protective plate 702 is not in contact with the inner top wall of the dilution barrel 3, a plurality of holes are formed in the air outlet ring 701, the air in the dilution barrel 3 can flow to the outside through the upper part of the protective plate 702 and the air outlet ring 701, so as to stabilize the air pressure in the dilution barrel 3.
[0036] The outer surface of the protective shell 1 is mounted with a transparent plate 15, the upper end of the protective shell 1 is detachably connected with a cover plate 16, the upper end of the liquid storage barrel 2 is mounted with a feeding port 17, the liquid storage barrel 2 and the dilution barrel 3 are made of transparent glass, which are used for storing or diluting the scale inhibitor, the remaining solvent in the liquid storage barrel 2 can be observed from the outside through the transparent plate 15, the cover plate 16 is fixed with the protective shell 1 by bolts and can be removed, when the solvent is insufficient, the cover plate 16 can be opened to add the solvent into the liquid storage barrel 2 at the feeding port 17.
[0037] The electric component 601, the electric valve 12 and the delivery pump 11 in the application are common electric devices in the prior art, and the model or internal structure thereof will not be described in excess in the application, and the electric component 601, the electric valve 12 and the delivery pump 11 can also be replaced by other power sources.
[0038] In use, when it is necessary to add the medicinal liquid into the circulating water, the electric valve 12 is first opened, and the water in the water inlet pipe 13 flows reversely into the inside of the dilution barrel 3 under the action of water pressure, when the water is three fourths, the electric valve 12 is closed to block the backflow of water, then the power mechanism 6 drives the rotating cylinder 402 to rotate, the solvent in the liquid storage barrel 2 enters into the inside of the dilution barrel 3, and the solvent and the water in the dilution barrel 3 are fully mixed through the rotation of the stirring mechanism 5, so that the scale inhibitor is diluted to reduce the concentration of the medicine, and then the scale inhibitor after dilution is slowly injected into the inside of the mixing mechanism 9 through the delivery pump 11, so that the flowing water and the scale inhibitor after dilution are mixed, thereby achieving the effect of uniform dosing to prevent the concentration of the scale inhibitor in the circulating water from being too high.
[0039] The technical principle of the application is described above in combination with specific embodiments. The description is only for explaining the principle of the application, and cannot be interpreted as limiting the protection scope of the application in any way. Based on the explanation herein, other specific embodiments of the application can be conceived by those skilled in the art without creative labor, and these embodiments will fall within the protection scope of the claims of the application.
Claims
1. A kind of intelligent dosing control device of circulating cooling water in thermal power plant, including protective shell (1), it is characterized in that: The inside of the protective shell (1) is provided with a liquid storage barrel (2) and a dilution barrel (3), the liquid storage barrel (2) is located above the dilution barrel (3), a discharging mechanism (4) is arranged between the liquid storage barrel (2) and the dilution barrel (3), a stirring mechanism (5) is arranged below the discharging mechanism (4), the stirring mechanism (5) is located in the inside of the dilution barrel (3), a power mechanism (6) is arranged outside the discharging mechanism (4), a ventilation mechanism (7) is arranged at the upper portion of the dilution barrel (3), a feeding pipe (8) and a reflux pipe (10) are connected to the lower portion of the dilution barrel (3), and a mixing mechanism (9) is arranged at the end of the feeding pipe (8) away from the dilution barrel (3).
2. The intelligent dosing control device for circulating cooling water in a thermal power plant according to claim 1, characterized in that: The mixing mechanism (9) comprises a fixed box (901), the outer surface of the fixed box (901) is fixedly connected with the protective shell (1), a water inlet pipe (13) is connected to the lower portion of the fixed box (901), and a water outlet pipe (14) is connected to the upper portion of the fixed box (901); the water inlet pipe (13) and the water outlet pipe (14) both penetrate through the protective shell (1) and extend to the outside.
3. The intelligent dosing control device for circulating cooling water in a thermal power plant according to claim 2, characterized in that: The end of the feeding pipe (8) away from the dilution barrel (3) is connected with the fixed box (901), and a conveying pump (11) is arranged on the feeding pipe (8).
4. The intelligent dosing control device for circulating cooling water in a thermal power plant according to claim 3, characterized in that: The end of the reflux pipe (10) away from the dilution barrel (3) is connected with the water inlet pipe (13), and an electric valve (12) is arranged on the reflux pipe (10).
5. The intelligent chemical dosing control device for circulating cooling water in a thermal power plant according to claim 2, characterized in that: A partition plate (902) is fixedly arranged in the fixed box (901), a plurality of baffle plates (903) are arranged on the outer surface of the partition plate (902) and the inner wall of the fixed box (901), and the plurality of baffle plates (903) are arranged in a staggered manner.
6. The intelligent chemical dosing control device for circulating cooling water in a thermal power plant according to claim 1, characterized in that: The discharging mechanism (4) comprises a fixed cylinder (401), the lower surface of the fixed cylinder (401) is fixedly connected with the inner bottom wall of the liquid storage barrel (2), a rotating cylinder (402) is rotatably connected to the inner wall of the fixed cylinder (401), and the lower portion of the rotating cylinder (402) is rotatably connected with the dilution barrel (3).
7. The intelligent chemical dosing control device for circulating cooling water in a thermal power plant according to claim 6, characterized in that: The stirring mechanism (5) comprises a support rod (501), the upper end of the support rod (501) is fixedly connected with the rotating cylinder (402), and a stirring rod (502) is fixedly connected to the outer surface of the support rod (501).
8. The intelligent chemical dosing control device for circulating cooling water in a thermal power plant according to claim 7, characterized in that: The power mechanism (6) comprises an electric component (601), the output end of the electric component (601) is drivingly connected with a belt (602), and the end of the belt (602) away from the electric component (601) is drivingly connected with the rotating cylinder (402).
9. The intelligent chemical dosing control device for circulating cooling water in a thermal power plant according to claim 1, characterized in that: The ventilation mechanism (7) comprises an air outlet ring (701), the upper surface of the air outlet ring (701) is fixedly connected with the dilution barrel (3), and a protective plate (702) is connected to the lower surface of the air outlet ring (701).
10. The intelligent chemical dosing control device for circulating cooling water in a thermal power plant according to claim 1, characterized in that: A transparent plate (15) is arranged on the outer surface of the protective shell (1), a cover plate (16) is detachably connected to the upper end of the protective shell (1), and a feeding port (17) is arranged on the upper end of the liquid storage barrel (2).