Spraying device for defoaming seawater

Abstract

The invention discloses a spraying device for seawater defoaming. The spraying device comprises a water supply pipe and a spraying pipe assembly, one end of the water supply pipe spans the water retaining dam and is immersed below the water surface of the water storage reservoir on one side of the water retaining dam; the other end of the water supply pipe is positioned above the sea drainage open channel and extends along the length direction of the sea drainage open channel; a spraying pipe assembly is arranged below the end, located on the sea drainage open channel, of the water supply pipe. The water supply pipe guides water in the water storage reservoir to the spraying pipe in a siphon mode, the water is sprayed out of the spraying pipe, and seawater foam is eliminated. The spraying device for seawater defoaming solves the problem of foam in seawater, eliminates the foam in the seawater by spraying, does not need a defoaming agent, does not need energy investment, uses local materials, reduces the maintenance cost of equipment, reduces the investment of resources such as manpower, and avoids the corrosion problem of water taking of a water pump; and the problems of potential safety hazard of the cable and frequent maintenance of equipment are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of seawater defoaming treatment devices, and in particular relates to a spraying device for seawater defoaming. Background Art

[0002] In power plants in coastal cities, the use of seawater as a circulating water cooling water process has become very common. This process makes full use of the natural advantages of seawater and provides a stable and economical cooling water source for power plants. However, in actual operation, the seawater system faces an important challenge: impurities such as microorganisms and shells easily adhere to key equipment such as pipelines and condensers. This not only affects the heat exchange effect of the condenser, but may also cause pipeline blockage, posing a threat to the safe operation of the power plant.

[0003] In order to deal with this problem, power plants usually add a certain concentration of sodium hypochlorite solution to the seawater intake. Sodium hypochlorite has a strong bactericidal ability and can effectively kill various microorganisms to prevent them from causing serious harm to equipment such as condensers. However, while this measure brings positive effects, it also causes new problems. In the process of killing microorganisms, sodium hypochlorite reacts with proteins in seawater to produce a large amount of foam. Although these foams are harmless to the environment and may even become nutrients for marine organisms, their large presence seriously affects the visual effect. The foam is discharged into the sea with the circulating water, which not only affects the beauty of the sea area, but also often causes dissatisfaction and complaints from surrounding residents, posing a potential threat to the reputation and stable operation of the power plant. In order to solve the problem of protein foam, some power plants try to add defoaming agents for defoaming. However, although this method can reduce the generation of foam to a certain extent, its high investment cost has an adverse effect on the economic benefits of the power plant. Therefore, finding an economical and effective defoaming method has become an urgent problem to be solved by power plants. Through repeated attempts and research, a defoaming solution of spraying water is proposed. This solution achieves the purpose of defoaming by spraying water mist on the foam area and using the impact force of water to destroy the stability of the foam. However, this solution still has major drawbacks in practical applications. First, since the open channel for discharging into the sea is usually located in the peripheral area far away from the power plant, it takes a lot of work to connect electricity from the power plant and connect the water pump. In addition, the lines and equipment are exposed in the wild, which is easy to be stolen and inconvenient to maintain. Secondly, equipment and lines far away from the production area have safety hazards and are prone to accidents. In addition, seawater is highly corrosive, and using water pumps to pump water can easily damage the equipment, increasing the maintenance cost of the equipment.

[0004] In summary, although the existing spraying water mist defoaming method has solved the problem of seawater foam to a certain extent, it still has many shortcomings and needs to be further improved and optimized. Developing a more effective and economical defoaming device is of great significance to the production and operation of power plants. Summary of the invention

[0005] The purpose of the present invention is to provide a spray device for seawater defoaming in view of the above-mentioned shortcomings, which solves the problem of foam in seawater by using spraying to eliminate foam in seawater, without the need for defoaming agents, without the need for energy investment, using local materials, reducing the maintenance cost of equipment, reducing the investment in resources such as manpower, and avoiding the corrosion problem of water pump water intake, as well as the safety hazards of cables and the regular maintenance problems of equipment.

[0006] A spray device for seawater defoaming comprises a water supply pipe and a spray pipe assembly; one end of the water supply pipe spans over a water conservation dam and is immersed below the water surface of a reservoir on one side of the water conservation dam; the other end of the water supply pipe is located above an open channel for discharging seawater and extends along the length direction of the open channel for discharging seawater; a spray pipe assembly is provided below one end of the water supply pipe located at the open channel for discharging seawater; the water supply pipe diverts water from the reservoir to the spray pipe in a siphon manner, and the water is sprayed out from the spray pipe to eliminate seawater foam.

[0007] Furthermore, the spray pipe assembly includes a plurality of spray pipes; the spray pipes are arranged in a pipe row.

[0008] Furthermore, the spray pipe assembly also includes a plurality of spray heads; and a plurality of spray heads are arranged below the spray pipe.

[0009] Furthermore, the nozzle is connected to the spray pipe via an adjusting member; the adjusting member is used to adjust the inclination angle between the nozzle and the spray pipe.

[0010] Furthermore, a flow stabilizing box is provided on one end of the water supply pipe immersed in the water surface of the reservoir, and a plurality of holes are provided on each side wall of the flow stabilizing box.

[0011] Furthermore, the water supply pipe and the spray pipe are both connected by PVC pipes.

[0012] The beneficial effects of the present invention are:

[0013] The present invention discloses a spraying device for defoaming seawater, comprising a water supply pipe and a spraying pipe assembly; one end of the water supply pipe crosses the water conservation dam and is immersed under the water surface of the reservoir on one side of the water conservation dam; the other end of the water supply pipe is located above the open channel for discharging seawater and extends along the length direction of the open channel for discharging seawater; a spraying pipe assembly is provided below one end of the water supply pipe located at the open channel for discharging seawater; the water supply pipe diverts the water of the reservoir to the spraying pipe in a siphon manner, and sprays out from the spraying pipe to eliminate seawater foam. The spraying device for defoaming seawater of the present invention solves the problem of eliminating foam in seawater by spraying, does not require defoaming agents, does not require energy input, uses local materials, reduces equipment maintenance costs, reduces the input of resources such as manpower, and avoids the corrosion problem of water pump water intake, as well as the potential safety hazards of cables and the difficulty of regular maintenance of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of a spray device for seawater defoaming according to the present invention;

[0015] Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0016] In the attached figure: 1- sea level, 2- water conservation dam, 3- flow stabilizing tank, 4- sprinkler pipe, 5- open channel for discharge to the sea, 6- water supply pipe. DETAILED DESCRIPTION

[0017] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0018] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0019] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0020] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, the element described as "below other elements or features" or "below other elements or features" will then be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0021] The siphon phenomenon is a phenomenon in physics and fluid mechanics, which describes the process of liquid automatically flowing between two containers with a height difference through an inverted U-shaped tube (siphon) filled with liquid. The siphon is filled with water and no air. Although the atmospheric pressure on both sides is equal, the water level at the incoming water end is high and the pressure is strong, which pushes the incoming water to continuously flow out of the outlet. In this process, the liquid will automatically flow from the higher liquid level through the pipe section above the liquid level to the lower liquid level. Due to the effects of gravity and liquid tension, the pressure difference generated can enable the liquid to overcome the top height of the pipe. The siphon phenomenon is a physical phenomenon based on pressure difference and gravity, and has a wide range of application value. By rationally utilizing the siphon principle, the automatic transportation and discharge of liquids can be realized, bringing convenience to people's lives and work.

[0022] Embodiment 1:

[0023] See attached Figures 1-2. A spray device for seawater defoaming of the present invention comprises a water supply pipe 6 and a spray pipe 4 assembly. One end of the water supply pipe 6 is arranged below the water surface of the reservoir on one side of the water conservation dam 2, and the other end is arranged above the open sea discharge channel 5 and its height relative to the sea level 1 is smaller than that of the end arranged below the water surface of the reservoir, and the end of the water supply pipe 6 arranged above the open sea discharge channel 5 extends horizontally for a certain length along the length direction of the open sea discharge channel 5. Since there is a height difference of more than 2 meters between the water surface of the reservoir and the open sea discharge channel 5, a natural siphon effect is formed inside the water supply pipe 6 between the two ends. When the water level at one end of the water supply pipe 6 (the reservoir end) is higher than that at the other end (the open sea discharge channel 5 end), due to the effect of gravity, the water will naturally flow to the low position, and at the same time, due to the change of the air pressure inside the pipe, the water will be continuously sucked in and transported to the high position (i.e., the open sea discharge channel 5 end). A spray pipe 4 assembly is provided below the water supply pipe 6 at the end above the open channel 5 for discharging seawater. The spray pipe 4 assembly includes several spray pipes 4, and several nozzles are provided below each spray pipe 4. When the water supply pipe 6 drains the water of the reservoir to the spray pipe 4 through the siphon effect, the water will be sprayed out from the multiple nozzles or openings below the spray pipe 4 in the form of fine water droplets or water mist. These fine water droplets or water mist can increase the contact area with the seawater foam, thereby eliminating the foam more effectively. The water supply pipe 6 of the present invention can cross the water conservation dam 2 and penetrate into the reservoir, and can adapt to the water level changes at different heights; the spray pipe 4 assembly can be flexibly arranged along the length direction of the open channel 5 for discharging seawater to adapt to the defoaming requirements of different lengths. The spray device for defoaming seawater of the present invention uses the siphon principle for natural drainage, does not require additional power equipment, and therefore has a low operating cost and does not cause pollution to the environment. It has a simple structure and fewer components, and is therefore relatively easy to maintain.

[0024] Specifically, the spray pipe 4 is arranged in a pipe row form, which can more easily use the siphon to absorb water, ensuring that each spray corresponds to a pipeline, and each pipe row corresponds to a spray system. In the actual production layout process, the number of pipe rows can be determined according to the seawater quality. Generally speaking, the more pipe rows there are, the better the spray effect and the greater the effect of the defoaming device. In addition, the use of pipe row arrangement can reduce the maintenance cycle and reduce risks. Even if a pipe is broken or damaged due to untimely maintenance, it will not affect the effect of spray defoaming.

[0025] Specifically, the nozzle is connected to the spray pipe 4 through an adjusting member, and the adjusting member is used to adjust the inclination angle between the nozzle and the spray pipe 4. The adjusting member may be a ball joint with a hollow structure inside, which is fixed to the top of the nozzle and rotatably connected to the spray pipe 4. The inclination angle of the nozzle is adjusted as required by the adjusting member, thereby changing the spray direction and range of the water mist, so as to ensure that the water mist can accurately cover the area where defoaming is required, thereby improving the defoaming efficiency.

[0026] Specifically, a stabilizing box 3 is provided on one end of the water supply pipe 6 immersed in the water surface of the reservoir, and a plurality of holes are provided on each side wall of the stabilizing box 3. By providing the stabilizing box 3 on one end of the water supply pipe 6, the stability of water flowing from the reservoir into the water supply pipe 6 is ensured, and water flow disturbance is reduced. Figure 2 As shown, it can play a filtering role to prevent garbage such as leaves in the water from entering the water supply pipe 6 and adhering to the pipeline, thereby blocking the water supply pipe 6.

[0027] Specifically, the water supply pipe 6 and the spray pipe 4 are both connected by PVC pipes. PVC pipes are widely used in water conservancy projects and water supply and drainage systems due to their corrosion resistance, light weight, easy installation and maintenance.

[0028] The spray device for defoaming seawater of the present invention solves the problem of foam in seawater and eliminates foam in seawater by spraying. No defoaming agent is required, no energy input is required, local materials are used, the maintenance cost of equipment is reduced, the input of resources such as manpower is reduced, and the corrosion problem of water pump water intake, the safety hazard of cables and the frequent maintenance difficulties of equipment are avoided. There is no need to worry about the risk of theft of cables, water pumps and other equipment, and the device has irreplaceable advantages.

[0029] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be covered by the scope of the claims of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

[0030] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical scheme is within the protection scope of the present invention.

Claims

1. A spraying device for defoaming seawater, characterized in that: It comprises a water supply pipe (6) and a spray pipe assembly; one end of the water supply pipe (6) spans over the water conservation dam (2) and is immersed below the water surface of the water reservoir on one side of the water conservation dam (2); the other end of the water supply pipe (6) is located above the open sea discharge channel (5) and extends along the length direction of the open sea discharge channel (5); a spray pipe assembly is provided below one end of the water supply pipe (6) located above the open sea discharge channel (5); the water supply pipe (6) diverts the water of the water reservoir to the spray pipe in a siphon manner, and sprays it out from the spray pipe assembly to eliminate seawater foam.

2. A spraying device for seawater defoaming according to claim 1, characterized in that: The spray pipe assembly comprises a plurality of spray pipes (4); the spray pipes (4) are arranged in a pipe row.

3. A spraying device for seawater defoaming according to claim 2, characterized in that: The spray pipe assembly also includes a plurality of spray heads; a plurality of spray heads are arranged below the spray pipe (4).

4. A spraying device for seawater defoaming according to claim 3, characterized in that: The spray head is connected to the spray pipe (4) via an adjusting member; the adjusting member is used to adjust the inclination angle between the spray head and the spray pipe.

5. A spraying device for seawater defoaming according to claim 1, characterized in that: A flow stabilizing box (3) is provided on one end of the water supply pipe (6) immersed in the water surface of the reservoir, and a plurality of holes are provided on each side wall of the flow stabilizing box (3).

6. A spraying device for seawater defoaming according to claim 1, characterized in that: The water supply pipe (6) and the spray pipe (4) are both connected by PVC pipes.

Images