A hydrophobic treatment system

Abstract

The utility model relates to water treatment technical field discloses a kind of water treatment systems, for steam system of thermal power plant, steam system of thermal power plant has for discharging water drain's water drain pipe, water treatment system includes water well, water drain pipe extends to water well inside through the water inlet of water well, spray piece is set in water well, temperature control valve is set in lower portion in water well, the water outlet of temperature control valve is communicated with the water inlet of spray piece, the water inlet of temperature control valve is communicated with cooling water system, spray piece is used to spray cooling water, the outlet of water drain pipe is located in the cooling water injection range of spray piece.The water treatment system of the utility model is simple and easy to operate, can realize the demisting and cooling of water drain, solve the white mist generated by water drain discharge in the prior art, not only invade equipment, cause equipment short circuit or damage, but also block worker's vision, hinder the technical problem of worker operation.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a hydrophobic treatment system. Background Technology

[0002] Currently, in the steam systems of thermal power plants, condensate refers to the liquid water formed by the condensation of steam during its flow or stagnation within pipes and equipment. The presence of condensate has a significant impact on the safe operation of the steam system. When steam flows at high speed, the high steam pressure pushes the condensate in the pipes, forming a "water column" that impacts the pipes or valves, generating tremendous impact force and noise, and in severe cases, can destroy pipes and supports. When low-temperature condensate comes into contact with high-temperature components such as turbine blades and valve internals, the metal cools and contracts rapidly, causing cracks or even breakage in the components. Therefore, in existing technologies, multiple condensate collection points are typically set up in the steam systems of thermal power plants for condensate discharge. The condensate from some collection points flows directly into the condenser for recycling, while the condensate from other collection points is discharged into nearby ditches, storm drains, or collection wells.

[0003] The condensate discharged from the drainage points is at a high temperature and is accompanied by some steam. When the condensate is discharged into ditches or other areas, the high-temperature condensate vaporizes due to a sudden pressure drop, forming high-temperature steam. This high-temperature steam liquefies rapidly upon contact with cold air, producing a dense white mist. This mist can not only intrude into control cabinets, instrument panels, and other equipment, causing short circuits or damage and leading to safety accidents, but it can also obstruct the vision of workers in the factory and hinder their operations. Utility Model Content

[0004] The technical problem to be solved by this utility model is that, in the prior art, the white fog generated by hydrophobic discharge not only invades the equipment, causing short circuits or damage and leading to safety accidents, but also obstructs the worker's vision and hinders the worker's operation.

[0005] To solve the above-mentioned technical problems, this utility model provides a condensate drainage system for a thermal power plant steam system. The thermal power plant steam system has a condensate drain pipe for discharging condensate. The condensate drainage system includes:

[0006] A drainage well, with a drainage pipe extending from the inlet of the drainage well into the drainage well;

[0007] The spraying component is installed inside the drainage well;

[0008] Thermostatic valve is located in the lower part of the drainage well. The outlet of the thermostatic valve is connected to the inlet of the spray element, and the inlet of the thermostatic valve is connected to the cooling water system.

[0009] The spray nozzle is used to spray cooling water;

[0010] The outlet of the condensate drain pipe is located within the cooling water spray range of the spray element.

[0011] Preferably, the outlet of the temperature control valve is connected to the inlet of the spray element through a first cooling water pipe, and the inlet of the temperature control valve is connected to the cooling water system through a second cooling water pipe.

[0012] The second cooling water pipe is equipped with a first shut-off valve.

[0013] Preferably, the first cooling water pipe includes a first section and a second section. The first section is vertically arranged at the center inside the drainage well. One end of the second section is connected to the bottom end of the first section, and the other end of the second section is connected to the outlet of the temperature control valve.

[0014] The spray nozzle is installed at the top of the first section.

[0015] Preferably, the spray nozzle is an open water mist nozzle.

[0016] Preferably, the drain pipe includes a manifold and at least one drain branch pipe. One end of each drain branch pipe is connected to a drain outlet of the steam system, and the other end of each drain branch pipe is connected to one end of the manifold. The other end of the manifold passes through the inlet of the drain well and extends into the drain well.

[0017] Preferably, each drain pipe is provided with two second shut-off valves, and a drain valve is provided on the drain pipe between the two second shut-off valves.

[0018] Preferably, an overflow outlet is provided on the side wall of the drainage well, and the overflow outlet is connected to the rainwater system / industrial water recycling system.

[0019] Preferably, the drainage well is located below ground level, and the top surface of the drainage well is flush with the ground level.

[0020] Compared with the prior art, the hydrophobic treatment system of this utility model has the following advantages:

[0021] This utility model provides a hydrophobic treatment system that diverts hydrophobic water to a hydrophobic well via a hydrophobic pipe. The hydrophobic water liquefies in the hydrophobic well and forms a large amount of white mist. The hydrophobic well prevents the hydrophobic water from splashing and scalding others when it is directly discharged into open areas such as ditches.

[0022] To eliminate the white fog, this embodiment of the invention includes a temperature control valve at the bottom of the drainage well. The temperature control valve is connected to the cooling water system, and a spray nozzle is installed at the outlet of the temperature control valve. When high-temperature condensate enters the drainage well, the temperature control valve senses the temperature change and opens automatically. Cooling water flows through the temperature control valve and is sprayed out through the spray nozzle. The sprayed water mist particles combine with the water particles in the white fog and fall into the drainage well. When the water particles in the white fog are completely combined and fall into the drainage well, the white fog is completely eliminated. Moreover, the sprayed water mist can effectively isolate the white fog, sealing it within the drainage well and preventing the white fog from spreading and interfering with the workers' vision.

[0023] The water flowing into the drainage well is converted into white mist, while the rest flows directly to the bottom of the drainage well. The water mist particles carry water particles from the white mist and fall into the drainage well at the bottom, where they mix with the water. The temperature of the mixed water is also greatly reduced, thus achieving the effect of cooling the drainage. The cooled mixed water can be directly transported to the rainwater system for discharge or to the industrial water recycling system for reuse, without the need for additional cooling measures.

[0024] This utility model embodiment installs a temperature control valve at the bottom of the drainage well. The drainage discharge status is judged based on the temperature, and water mist is automatically sprayed for demisting and cooling. The supply of cooling water is automatically started and stopped according to the drainage discharge status. The whole process is fully automatic and does not require manual supervision, which effectively improves the drainage treatment efficiency.

[0025] The hydrophobic treatment system of this utility model embodiment is simple and easy to implement. It can achieve defogging and cooling of hydrophobic water, and solves the technical problem in the prior art that the white fog generated by hydrophobic discharge not only invades the equipment, causing short circuits or damage to the equipment, but also obstructs the worker's vision and hinders the worker's operation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the hydrophobic treatment system according to an embodiment of the present invention.

[0027] In the diagram, 1 is a drainage well; 11 is an overflow outlet; 12 is a top cover; 121 is the first water inlet; 122 is the second water inlet; 2 is a spray nozzle; 3 is a temperature control valve; 4 is the first cooling water pipe; 41 is the first section; 42 is the second section; 5 is the second cooling water pipe; 51 is the first shut-off valve; 6 is a drainage pipe; 61 is a manifold; 62 is a drainage branch pipe; 621 is the second shut-off valve; and 622 is a steam trap. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer" and other terms used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 utility model based on the specific circumstances.

[0032] like Figure 1 As shown, a preferred embodiment of the present invention provides a drainage treatment system for a thermal power plant steam system. The thermal power plant steam system has a drainage pipe 6 for discharging drainage water. The drainage treatment system includes a drainage well 1, a spray element 2, and a temperature control valve 3. The drainage pipe 6 extends into the drainage well 1 through its inlet. In this embodiment, the drainage well 1 is located below ground level, and its top surface is flush with the ground. The drainage well 1 has a top cover 12, on which a first inlet 121 and a second inlet 122 are provided. The drainage pipe 6 enters the drainage well 1 through the first inlet 121. The design of the drainage well 1 prevents drainage water from splashing and scalding others when directly discharged into open areas such as ditches.

[0033] Specifically, such as Figure 1 As shown, the drain pipe 6 includes a manifold 61 and at least one drain pipe 62. One end of each drain pipe 62 is connected to a drain outlet of the steam system, and the other end of each drain pipe 62 is connected to one end of the manifold 61. The other end of the manifold 61 passes through the first inlet 121 of the top cover 12 and extends into the drain well 1. The outlet of the manifold 61 should be located within the cooling water spray range of the spray element 2. In this embodiment of the invention, there is only one drain pipe 62, which collects and processes condensate from a single drain point. In other embodiments, there may be multiple drain pipes 62, which can collect and process condensate from multiple drain points simultaneously.

[0034] Specifically, such as Figure 1As shown, the spray element 2 is installed inside the drainage well 1 for spraying cooling water. The temperature control valve 3 is installed in the lower part of the drainage well 1. The outlet of the temperature control valve 3 is connected to the inlet of the spray element 2, and the inlet of the temperature control valve 3 is connected to the cooling water system. In this embodiment of the present invention, the outlet of the temperature control valve 3 is connected to the inlet of the spray element 2 through the first cooling water pipe 4, and the inlet of the temperature control valve 3 is connected to the cooling water system through the second cooling water pipe 5. The second cooling water pipe 5 passes through the second inlet 122 of the top cover 12 and enters the drainage well 1. The first cooling water pipe 4 includes a first section 41 and a second section 42. The first section 41 is vertically arranged at the center inside the drainage well 1. One end of the second section 42 is connected to the bottom end of the first section 41, and the other end of the second section 42 is connected to the outlet of the temperature control valve 3. The spray element 2 is installed at the top of the first section 41.

[0035] Specifically, in this embodiment of the invention, the spray element 2 adopts an open water mist nozzle. Cooling water is sprayed out through the spray element 2 to form a hemispherical water mist, which covers the entire drainage well 1, ensuring the drainage treatment effect and improving the drainage treatment efficiency. The sprayed water mist particles combine with the water particles in the white mist and fall into the drainage well 1. When the water particles in the white mist are completely combined and fall into the drainage well 1, the white mist is completely eliminated. The drainage part flowing into the drainage well 1 is transformed into white mist, while the other part flows directly to the bottom of the drainage well 1. The water mist particles carry the water particles in the white mist and fall into the drainage at the bottom of the drainage well 1, where they mix with the water. The temperature of the mixed water is also greatly reduced, achieving the effect of cooling the drainage. The cooled mixed water can be directly transported to the rainwater system for discharge or to the industrial water recycling system for reuse, without the need for additional cooling measures.

[0036] Specifically, in this embodiment of the invention, the temperature control valve 3 is a shape memory alloy temperature control valve. The condensate has a high temperature. When the condensate flows to the bottom of the condensate well 1, the shape memory alloy in the valve senses the high temperature and deforms, causing the valve to open. Cooling water flows along the pipe to the spray nozzle 2 and is sprayed out in the form of water mist to defog and cool the condensate. When the condensate supply stops, the water temperature in the condensate well 1 gradually decreases. When the temperature cannot reach the deformation temperature of the shape memory alloy, the alloy returns to its original shape, and the temperature control valve automatically closes. This embodiment of the invention, by setting a temperature control valve 3 at the bottom of the condensate well 1, judges the condensate discharge situation based on the temperature, thereby automatically spraying water mist for defogging and cooling. The cooling water supply automatically starts and stops according to the condensate discharge situation. The entire process is fully automatic, requiring no manual supervision, effectively improving the condensate treatment efficiency.

[0037] Furthermore, a first shut-off valve 51 is installed on the second cooling water pipe 5. When the temperature control valve 3 is being maintained or replaced due to a malfunction, the first shut-off valve 51 can be closed to cut off the cooling water supply and avoid interfering with the daily maintenance or replacement of the temperature control valve 3.

[0038] Furthermore, each drain pipe 62 is equipped with two second shut-off valves 621, and a steam trap 622 is installed on the drain pipe 62 between the two second shut-off valves 621. The steam trap 622 can automatically discharge condensate, air and other non-condensable gases in the system, while preventing steam leakage in the steam system and ensuring sufficient power in the steam system. The second shut-off valves 621 at the front and rear ends of the steam trap 622 are used to cut off the condensate supply during daily maintenance or repair of the steam trap 622, ensuring the normal progress of maintenance or repair.

[0039] Furthermore, an overflow port 11 is provided on the side wall of the drainage well 1. The overflow port 11 is connected to the rainwater system through a pipe. When the water in the drainage well 1 reaches a set level, the water flows from the overflow port into the pipe and is then transported to the rainwater system for discharge. In other embodiments, the overflow port can be connected to an industrial water recycling system. When the water in the drainage well 1 reaches a set level, the water flows into the industrial water recycling system and is recycled.

[0040] The working process of this utility model is as follows: Drainage flows from the condensate drain point on the steam pipe into the condensate drain pipe 62. The condensate in the condensate drain pipe 62 is collected in the manifold 61 and then flows into the condensate well 1. Part of the condensate flowing out of the manifold 61 liquefies and forms a large amount of white mist, while the other part flows directly to the bottom of the condensate well 1. The shape memory alloy in the temperature control valve 3 senses the high temperature and deforms, thereby driving the temperature control valve 3 to open. Cooling water flows along the pipe to the spray element 2 and is sprayed out in the form of water mist. The sprayed water mist particles and white mist... Water particles in the mist combine and fall into the drainage well 1. When all the water particles in the mist are completely combined and fall into the drainage well 1, the mist is completely eliminated. The flowing water mist particles carry the water particles from the mist into the drainage water at the bottom of the drainage well 1, where they mix. The temperature of the mixed water is also greatly reduced, achieving the effect of cooling the drainage. When the drainage stops flowing, the water temperature in the drainage well 1 gradually decreases. When the temperature cannot reach the deformation temperature of the shape memory alloy, the shape memory alloy returns to its original shape, and the shape memory alloy temperature control valve automatically closes. After the mixed water level in the drainage well 1 reaches the set height, it can flow into the rainwater system for discharge through the overflow port 11.

[0041] In summary, this utility model embodiment provides a hydrophobic treatment system that diverts hydrophobic water to a hydrophobic well 1 through a hydrophobic pipe 6. The hydrophobic water liquefies in the hydrophobic well 1 and forms a large amount of white mist. The setting of the hydrophobic well 1 avoids the hydrophobic water from splashing and scalding others when it is directly discharged into open places such as ditches.

[0042] To eliminate the white fog, this embodiment of the invention includes a temperature control valve 3 at the bottom of the drainage well 1. The temperature control valve 3 is connected to the cooling water system, and a spray element 2 is installed at the outlet of the temperature control valve 3. When high-temperature condensate enters the drainage well 1, the temperature control valve 3 senses the temperature change and opens automatically. Cooling water flows through the temperature control valve 3 and is sprayed out through the spray element 2. The sprayed water mist particles combine with the water particles in the white fog and fall into the drainage well 1. When the water particles in the white fog are completely combined and fall into the drainage well 1, the white fog is completely eliminated. Moreover, the sprayed water mist can effectively isolate the white fog, sealing it inside the drainage well 1, thus preventing the white fog from spreading and interfering with the workers' vision and delaying their work.

[0043] The water flowing into the drainage well 1 is converted into white mist, while the rest flows directly to the bottom of the drainage well 1. The water mist particles carry water particles from the white mist and fall into the drainage water at the bottom of the drainage well 1, where they mix with the water. The temperature of the mixed water is also greatly reduced, thus achieving the effect of cooling the drainage. The cooled mixed water can be directly transported to the rainwater system for discharge without the need for additional cooling measures.

[0044] This utility model embodiment installs a temperature control valve 3 at the bottom of the drainage well 1 to determine the drainage discharge status based on the temperature, thereby automatically spraying water mist for demisting and cooling. The supply of cooling water automatically starts and stops according to the drainage discharge status. The entire process is fully automatic and requires no worker supervision, effectively improving the drainage treatment efficiency.

[0045] The hydrophobic treatment system of this utility model embodiment is simple and easy to implement. It can achieve defogging and cooling of hydrophobic water, and solves the technical problem in the prior art that the white fog generated by hydrophobic discharge not only invades the equipment, causing short circuits or damage to the equipment, but also obstructs the worker's vision and hinders the worker's operation.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A condensate drainage system for a thermal power plant steam system, the thermal power plant steam system having a condensate drain pipe (6) for discharging condensate, characterized in that, The hydrophobic treatment system includes: A drainage well (1), wherein the drainage pipe (6) extends through the inlet of the drainage well (1) into the drainage well (1); A spraying component (2) is disposed within the drainage well (1); Thermostatic valve (3) is located in the lower part of the drainage well (1). The outlet of the thermostatic valve (3) is connected to the inlet of the spray element (2). The inlet of the thermostatic valve (3) is connected to the cooling water system. The spray element (2) is used to spray cooling water; The outlet of the hydrophobic pipe (6) is located within the cooling water spray range of the spray element (2).

2. The hydrophobic treatment system according to claim 1, characterized in that, The outlet of the temperature control valve (3) is connected to the inlet of the spray element (2) through the first cooling water pipe (4), and the inlet of the temperature control valve (3) is connected to the cooling water system through the second cooling water pipe (5). A first shut-off valve (51) is installed on the second cooling water pipe (5).

3. The hydrophobic treatment system according to claim 2, characterized in that, The first cooling water pipe (4) includes a first section (41) and a second section (42). The first section (41) is arranged vertically at the center inside the drainage well (1). One end of the second section (42) is connected to the bottom end of the first section (41), and the other end of the second section (42) is connected to the outlet of the temperature control valve (3). The spraying component (2) is installed at the top of the first segment (41).

4. The hydrophobic treatment system according to claim 3, characterized in that, The spray component (2) adopts an open water mist nozzle.

5. The hydrophobic treatment system according to claim 1, characterized in that, The drain pipe (6) includes a manifold (61) and at least one drain pipe (62). One end of each drain pipe (62) is connected to each drain outlet of the steam system, and the other end of each drain pipe (62) is connected to one end of the manifold (61). The other end of the manifold (61) passes through the inlet of the drain well (1) and extends into the drain well (1).

6. The hydrophobic treatment system according to claim 5, characterized in that, Each of the drain pipes (62) is provided with two second shut-off valves (621), and a drain trap (622) is provided on the drain pipe (62) between the two second shut-off valves (621).

7. The hydrophobic treatment system according to claim 1, characterized in that, An overflow port (11) is provided on the side wall of the drainage well (1), and the overflow port (11) is connected to the rainwater system / industrial water recycling system.

8. The hydrophobic treatment system according to claim 1, characterized in that, The drainage well (1) is located below ground level, and the top surface of the drainage well (1) is flush with the ground level.

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