Seawater foam eliminating device
By installing components such as foam-blocking belts, spray pipes, and spray nozzles in the open channel of circulating water outlet, combined with variable frequency seawater pumps and interception filters, the problem of difficult foam elimination in circulating water is solved, achieving efficient, economical, and environmentally friendly foam elimination effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-03-06
AI Technical Summary
In existing technologies, the large volume and high velocity of circulating water in open channels make it difficult to quickly and completely eliminate foam, especially during high-temperature seasons or when the water is eutrophic. Simply adding defoamers is not effective in controlling the foam, leading to foam overflow and increasing the risk of marine pollution.
A bubble-blocking belt, seawater intake pipe, seawater intake pump, seawater delivery pipe, spray pipe and spray nozzles are installed in the open channel of circulating water outlet. The foam is eliminated by seawater spraying, impurities are filtered by interception filter screen, and foam is initially eliminated by baffle plate and bubble needle. The spray force is adjusted by variable frequency seawater pump to achieve precise control.
No defoaming agent is needed; foam is eliminated through physical methods, avoiding pollution, reducing equipment maintenance difficulty, achieving efficient and economical foam elimination, adapting to different liquid levels, and saving energy and protecting the environment.
Smart Images
Figure CN223973898U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seawater defoaming technology, specifically a seawater foam elimination device. Background Technology
[0002] The power plant uses seawater as the circulating cooling water for the generator units. After the cooling seawater undergoes heat exchange in the condenser, the water temperature rises. During the discharge process, it is subjected to intense impacts through multiple energy dissipation belts, causing hot air on the surface of the water to seep into the water flow and form a large number of bubbles. Due to the air flotation phenomenon generated during the aeration process, suspended matter (silt, organic matter, biological mucus, etc.) in the seawater floats to the surface of the seawater, which increases the stability of the bubbles. It is easy to form a large number of stable foams at the seawater discharge outlet, so defoamers need to be added to the siphon well or circulating water outlet to eliminate the foam.
[0003] However, due to the large volume and fast flow rate of circulating water in the open channel of circulating water outlet, even with the addition of defoamer, it is difficult to quickly and completely eliminate the impact of foam. Especially during the high temperature season in spring and summer, when the water quality is eutrophic or when factors such as the addition of sodium hypochlorite cause a large amount of foam to be generated in the circulating water, simply adding defoamer is not effective in controlling it and can still lead to a large amount of foam overflow, which in severe cases increases marine pollution and causes environmental accidents. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a seawater foam elimination device. It solves the problem that due to the large volume and fast flow rate of circulating water in the open channel of circulating water, even with the addition of defoaming agents, it is difficult to quickly and comprehensively eliminate the impact of foam. In particular, during the high-temperature season of spring and summer, when the water quality is eutrophic or when sodium hypochlorite is added, a large amount of foam is generated in the circulating water. Simply adding defoaming agents is not effective in controlling the foam, and a large amount of foam may still overflow, which may increase marine pollution and cause environmental accidents in severe cases.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a seawater foam elimination device, comprising a circulating water outlet channel, wherein a foam-blocking band is provided on one side of the circulating water outlet channel along its width direction, and a seawater intake pipe is provided on one side of the circulating water outlet channel, wherein the outlet end of the seawater intake pipe is connected to the inlet end of a seawater intake pump, the seawater intake pump is fixedly installed on the top side of the circulating water outlet channel, and the outlet end of the seawater intake pump is connected to a seawater delivery pipe;
[0008] The outlet end of the seawater delivery pipe is connected to a horizontal pipe, and four sets of distribution pipes are equidistantly connected to the bottom of the horizontal pipe. A pressure regulating valve is connected to the bottom of the distribution pipe, and a spray pipe is connected to the bottom of the pressure regulating valve at the inner side of the circulating water outlet channel. Spray nozzles are equidistantly connected to the bottom of the spray pipe.
[0009] A support pipe frame is connected to one side of the horizontal pipe at the top edge of the circulating water outlet channel. A weighted bottom box is connected to the bottom inlet end of the seawater intake pipe. A filter box is slidably connected to the inside of the weighted bottom box, and an intercepting filter screen is installed inside the filter box.
[0010] As a preferred technical solution of the seawater foam elimination device of this utility model, the seawater intake pipe is a flexible hose, and the seawater delivery pipe and the horizontal pipe are both metal pipes.
[0011] As a preferred technical solution of the seawater foam elimination device of this utility model, the pressure regulating valve adjusts the spray force of each group of spray nozzles by adjusting its opening degree, and the seawater intake pump is a variable frequency seawater pump.
[0012] As a preferred technical solution of the seawater foam elimination device of this utility model, the top end of the support pipe frame is connected to the horizontal pipe through a ring clamp, and the bottom end of the support pipe frame is fixedly connected to the top of the circulating water outlet channel.
[0013] As a preferred technical solution of the seawater foam elimination device of this utility model, a sliding groove is provided on the inner side of the weighted bottom box, the filter box is embedded and slidably connected in the sliding groove, and the seawater intake pipe is connected to the inside of the weighted bottom box.
[0014] As a preferred technical solution of the seawater foam elimination device of this utility model, a flow-blocking plate is horizontally connected to the inner side of the circulating water outlet channel at one side of the foam-blocking zone. The top of the flow-blocking plate has water-passing grooves at equal intervals, and the bottom of the flow-blocking plate has a through groove. An installation frame is embedded in the inner side of the through groove. A support rod is connected to the side end of the installation frame. A water flow driving vane is rotatably connected to the end of the support rod. Bubble-piercing needles are evenly arranged on the side end of the water flow driving vane.
[0015] The flow-blocking plate is connected to mounting rods on both sides, and the edge of the circulating water outlet channel is connected to the mounting rods via a limiting seat.
[0016] As a preferred technical solution of the seawater foam elimination device of this utility model, the water flow driving vane is facing the water inlet direction of the circulating water outlet channel, the mounting rod has fixing holes equidistantly opened inside, and the limiting seat is connected to the fixing holes by bolts on its inner side.
[0017] (III) Beneficial Effects
[0018] Compared with the prior art, the present invention provides a seawater foam elimination device, which has the following beneficial effects:
[0019] 1. By arranging a foam-blocking belt, seawater intake pipe, seawater intake pump, seawater delivery pipe, horizontal pipe, distribution pipe, pressure regulating valve, spray pipe and spray nozzle inside the circulating water outlet channel, a foam elimination component is installed inside the circulating water outlet channel. The foam-blocking belt can intercept the foam at the circulating water outlet, so that the foam is centrally treated and prevented from flowing directly into the open sea. By arranging an array of spray pipes and spray nozzles, the foam is eliminated by spraying seawater. The pressure regulating valve can easily adjust the spray intensity of each set of spray nozzles to achieve precise control and foam elimination effect. The seawater intake pump adopts a variable frequency seawater pump, which can adjust the pump power according to the foam situation at the outlet to achieve energy saving effect.
[0020] The foam elimination component can use physical methods to directly spray seawater to break up the foam and eliminate it. There is no need to add defoamer, so it is pollution-free and cost-free. It uses the principle of seawater spraying to eliminate foam, which replaces the existing method of adding external defoamer. It is simple to implement, has good defoaming effect, and is economical and environmentally friendly.
[0021] 2. By arranging a weighted bottom box, filter box, and intercepting filter screen at the inlet end of the seawater intake pipe, the intercepting filter screen in the filter box filters the seawater during the process of the seawater intake pump pumping it into the seawater intake pipe. This prevents impurities in the seawater from directly entering the seawater intake pipe, thus avoiding subsequent blockage of the seawater intake pump and spray nozzles, affecting the normal use of the foam elimination components, and reducing the difficulty of equipment maintenance. At the same time, the intercepting filter screen facilitates the subsequent centralized cleaning of impurities, improving the convenience of operation.
[0022] 3. By installing a baffle plate, water passage, through channel, mounting frame, support rod, water flow drive vane, and bubble needle at the inlet end of the circulating water outlet channel, the water flow drive vane can be rotated by the impact force of the seawater flow when the seawater enters the circulating water outlet channel. As the water flow drive vane rotates, the bubble needles evenly distributed on its edge can perform preliminary puncture and elimination of the foam carried in the seawater, further ensuring the effectiveness of subsequent foam elimination. This defoaming method does not require the introduction of additional electrical equipment and has no energy consumption.
[0023] Furthermore, the baffle plate can be easily installed using the mounting rod and limit seat. By adjusting the installation height of the mounting rod, the position and height of the baffle plate can be easily adjusted, thus allowing the height of the baffle plate to be adaptively adjusted according to the liquid level in the circulating water outlet channel for better defoaming. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of this utility model.
[0025] Figure 2 This is a schematic diagram of the structure of the water spray pipe of this utility model.
[0026] Figure 3 This is a schematic diagram of the structure of the filter box of this utility model.
[0027] Figure 4 This is a schematic diagram of the flow-blocking plate of this utility model.
[0028] In the diagram: 1. Circulating water outlet channel; 2. Bubble barrier; 3. Seawater intake pipe; 4. Seawater intake pump; 5. Seawater delivery pipe; 6. Horizontal pipe; 7. Distribution pipe; 8. Pressure regulating valve; 9. Spray pipe; 10. Spray nozzle; 11. Support pipe rack; 12. Weighted base box; 13. Filter box; 14. Interceptor filter screen; 15. Baffle plate; 16. Water passage trough; 17. Through channel; 18. Mounting frame; 19. Support rod; 20. Water flow driven impeller; 21. Bubble needle; 22. Mounting rod; 23. Limit seat. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.
[0030] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.
[0031] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.
[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example
[0033] Please see Figure 1-4 The present invention provides the following technical solution: a seawater foam elimination device, including a circulating water outlet channel 1, a foam-blocking band 2 is provided on one side of the circulating water outlet channel 1 along its width direction, a seawater intake pipe 3 is provided on one side of the circulating water outlet channel 1, the liquid outlet end of the seawater intake pipe 3 is connected to the water inlet end of the seawater intake pump 4, the seawater intake pump 4 is fixedly installed on the top side of the circulating water outlet channel 1, and the water outlet end of the seawater intake pump 4 is connected to a seawater delivery pipe 5;
[0034] The outlet end of the seawater delivery pipe 5 is connected to a horizontal pipe 6. Four sets of distribution pipes 7 are equidistantly connected to the bottom of the horizontal pipe 6. A pressure regulating valve 8 is connected to the bottom of the distribution pipe 7. A spray pipe 9 is connected to the bottom of the pressure regulating valve 8 at the inner side of the circulating water outlet channel 1. Spray nozzles 10 are equidistantly connected to the bottom of the spray pipe 9. The seawater intake pipe 3 is a flexible hose. The seawater delivery pipe 5 and the horizontal pipe 6 are both metal pipes, which facilitates the arrangement of the seawater intake pipe 3 in the circulating water outlet channel 1. At the same time, the seawater delivery pipe 5 and the horizontal pipe 6 remain stable when sprayed by the spray nozzles 10. The pressure regulating valve 8 can adjust the spray force of each set of spray nozzles 10 by adjusting its opening. The seawater intake pump 4 is a variable frequency seawater pump, which facilitates the adjustment of the spray force of the spray nozzles 10. At the same time, the use of a variable frequency seawater pump can adjust the power of the seawater intake pump 4 according to the foam situation at the outlet, so as to achieve energy saving.
[0035] A support pipe frame 11 is connected to one side of the horizontal pipe 6 at the top edge of the circulating water outlet channel 1. The top of the support pipe frame 11 is connected to the horizontal pipe 6 through a ring clamp, and the bottom of the support pipe frame 11 is fixedly connected to the top of the circulating water outlet channel 1, making the connection between the support pipe frame 11 and the horizontal pipe 6 convenient. At the same time, the support pipe frame 11 can easily provide stable support for the horizontal pipe 6. The bottom inlet end of the seawater intake pipe 3 is connected to a weighted bottom box 12. A filter box 13 is slidably connected and embedded in the inner side of the weighted bottom box 12. A sliding groove is opened on the inner side of the weighted bottom box 12, and the filter box 13 is slidably connected in the sliding groove. The seawater intake pipe 3 and the inside of the weighted bottom box 12 are connected, making the connection and disassembly of the filter box 13 and the weighted bottom box 12 more convenient. At the same time, it is convenient to intercept and filter the seawater entering the seawater intake pipe 3. An interception filter screen 14 is installed inside the filter box 13.
[0036] A flow-blocking plate 15 is horizontally connected to the inner side of the circulating water outlet channel 1, located on one side of the bubble-blocking strip 2. The top of the flow-blocking plate 15 has water-passing grooves 16 at equal intervals, and the bottom of the flow-blocking plate 15 has a through groove 17. An installation frame 18 is embedded in the inner side of the through groove 17. A support rod 19 is connected to the side end of the installation frame 18. A water flow driving blade 20 is rotatably connected to the end of the support rod 19. Bubble-piercing needles 21 are evenly arranged on the side end of the water flow driving blade 20.
[0037] Mounting rods 22 are connected to both sides of the baffle plate 15. The edge of the circulating water outlet channel 1 is connected to the mounting rod 22 via a limiting seat 23. The water flow driven blade 20 faces the water inlet direction of the circulating water outlet channel 1. Fixing holes are equidistantly opened inside the mounting rod 22. The limiting seat 23 is connected to the fixing holes via bolts on its inner side, which facilitates the use of the impact force of seawater flow to drive the water flow driven blade 20 to rotate, and also facilitates the connection and disassembly between the mounting rod 22 and the limiting seat 23.
[0038] The working principle and usage process of this utility model: The circulating water outlet channel 1 is arranged at the drainage end of the generator set's circulating cooling water. After the seawater is cooled, it enters the circulating water outlet channel 1. The impact force of the seawater flow drives the water flow to drive the rotating blade 20 to rotate. After the water flow drives the rotating blade 20 to rotate, it will synchronously drive the bubble-piercing needles 21 at its edge to rotate synchronously. At this time, the bubble-piercing needles 21, which are evenly arranged at the edge of the water flow driven rotating blade 20, can conveniently perform preliminary piercing and elimination treatment on the foam carried in the seawater, ensuring the effect of subsequent foam elimination.
[0039] The installation rod 22 and the limiting seat 23 make it easy to adjust and install the baffle plate 15. The installation rod 22 has multiple sets of fixing holes inside, which makes it easy to adjust the position height of the baffle plate 15 by adjusting the installation height of the installation rod 22. This allows the height of the baffle plate 15 to be adjusted adaptively according to the liquid level in the circulating water outlet channel 1, so as to better defoam.
[0040] After the seawater flows through the baffle plate 15, the foam interception belt 2 inside the circulating water outlet channel 1 is used to intercept the foam at the circulating water outlet, so that the foam is concentrated and treated, and the foam is prevented from flowing directly out to the open sea. By starting the seawater intake pump 4, the seawater in the circulating water outlet channel 1 is pumped into the seawater intake pipe 3. At this time, the interception filter screen 14 in the filter box 13 is used to filter the seawater, preventing impurities mixed in the seawater from directly entering the seawater intake pipe 3, and preventing subsequent impurities from clogging the seawater intake pump 4 and the spray nozzle 10, reducing the difficulty of equipment maintenance. At the same time, the interception of impurities by the interception filter screen 14 also facilitates the subsequent centralized cleaning of impurities.
[0041] After seawater enters the seawater delivery pipe 5 through the seawater intake pipe 3, it is further transported through the seawater delivery pipe 5 to the horizontal pipe 6 and the distribution pipe 7. Finally, the seawater is sprayed out by the spray nozzle 10 at the bottom of the spray pipe 9. In this way, the foam is eliminated by spraying seawater, which eliminates the foam without the need to add defoamer, and is pollution-free and cost-free.
[0042] During the defoaming process, the pressure regulating valve 8 allows for easy adjustment of the spray intensity of each set of spray nozzles 10, achieving precise control and foam elimination. The seawater intake pump 4 is a variable frequency seawater pump, which can adjust the pump power according to the foam situation at the outlet, achieving energy-saving effect.
[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A sea water foam eliminating device comprising a circulating water outfall channel (1), characterized in that: The inside one side of the circulating water outlet open channel (1) is provided with a bubble blocking belt (2) along its width direction, the inside one side of the circulating water outlet open channel (1) is provided with a seawater taking pipe (3), the liquid outlet end of the seawater taking pipe (3) is connected to the water inlet end of a seawater taking pump (4), the seawater taking pump (4) is fixedly installed on the top of the side edge of the circulating water outlet open channel (1), the water outlet end of the seawater taking pump (4) is connected with a seawater delivery pipe (5); The liquid outlet end of the seawater delivery pipe (5) is connected with a cross pipe (6), the bottom of the cross pipe (6) is connected with four groups of distribution pipes (7) at equal intervals, the bottom of the distribution pipe (7) is connected with a pressure regulating valve (8), and the bottom of the pressure regulating valve (8) is connected with a water spraying pipe (9) at a position inside the circulating water outlet open channel (1), the bottom of the water spraying pipe (9) is connected with a spray nozzle (10) at equal intervals; One side of the cross pipe (6) is connected with a support pipe frame (11) at a position of the top edge end of the circulating water outlet open channel (1), the bottom liquid inlet end of the seawater taking pipe (3) is connected with a weighted bottom box (12), the inside of the weighted bottom box (12) is embeddedly and slidably connected with a filter box (13), and the inside of the filter box (13) is embeddedly installed with an intercepting filter screen (14).
2. A sea water foam eliminating device according to claim 1, characterised in that: The seawater taking pipe (3) is a hose, and the seawater delivery pipe (5) and the cross pipe (6) are metal pipes.
3. A sea water foam eliminating device according to claim 1, characterized in that: The pressure regulating valve (8) adjusts the opening degree to adjust the spraying force of each group of spray nozzles (10), and the seawater taking pump (4) is a variable frequency seawater pumping pump.
4. A sea water foam eliminating device according to claim 1, characterized in that: The top end of the support pipe frame (11) is connected between the cross pipe (6) and the ring hoop, and the bottom end of the support pipe frame (11) is fixedly connected to the top of the circulating water outlet open channel (1).
5. A sea water foam eliminating device as claimed in claim 1, wherein: The inside of the weighted bottom box (12) is provided with a sliding groove, the filter box (13) is embeddedly and slidably connected in the sliding groove, and the seawater taking pipe (3) is connected with the inside of the weighted bottom box (12).
6. A sea water foam eliminating device according to claim 1, characterized in that: A flow resistance plate (15) is horizontally connected at a position of one side of the bubble blocking belt (2) inside the circulating water outlet open channel (1), a plurality of water passing grooves (16) are equidistantly formed in the top of the flow resistance plate (15), a through groove (17) is formed in the bottom of the flow resistance plate (15), an installation frame (18) is embeddedly installed in the inside of the through groove (17), a support rod (19) is connected to the edge end of the installation frame (18), a water flow driving rotating blade (20) is rotatably connected to the end of the support rod (19), and a plurality of bubble piercing needles (21) are uniformly arranged on the edge end of the water flow driving rotating blade (20); The two side edge ends of the flow resistance plate (15) are connected with installation rods (22), and the edge ends of the circulating water outlet open channel (1) are connected with the installation rods (22) through limiting seats (23).
7. A sea water foam eliminating device according to claim 6, characterised in that: The water flow driving rotating blade (20) faces the water inlet direction of the circulating water outlet open channel (1), a plurality of fixing holes are equidistantly formed in the inside of the installation rod (22), and the limiting seat (23) is connected with the fixing holes through bolts in the inside thereof.