Drain water recycling and discharging device and system

Abstract

The invention relates to a drain water recycling and discharging device and system. The drain recovery and discharge device comprises a first branch pipe, a temperature reduction pool, a drain pipe group and a plurality of separation walls. Drain water of the heat supply pipeline enters the temperature reduction pool through the second branch pipe, the third branch pipe and the fourth branch pipe, the drain water of the second branch pipe, the third branch pipe and the fourth branch pipe is expanded and subjected to steam-water separation in the temperature reduction pool, and the specific expansion position is the space between the first side wall and the separation wall adjacent to the first side wall. The expanded gas is discharged out of the temperature reduction pool through the steam holes, the drained water is subjected to multi-stage cooling in the temperature reduction pool through a plurality of separation walls of the temperature reduction pool, then the drained water is cooled through temperature reduction water and then discharged into the catch basin, it can be guaranteed that the discharged drained water does not exceed the temperature, the drained water discharging efficiency is improved, the temperature reduction pool is buried, no channel is occupied, and the construction cost is low.

Description

Technical Field

[0001] The present application relates to the field of hydrophobic recovery technology, and in particular to a hydrophobic recovery and discharge device and system. Background Art

[0002] In natural gas cogeneration projects or conventional coal-fired power generation projects, power plants need to supply external heat or auxiliary steam to certain users. These steam pipes are typically routed on pipe racks within the plant, resulting in long pipe runs. Heat dissipation and pressure drop within the pipes often lead to the formation of drainage. Because the steam pipes are located far from the main powerhouse, the drainage is often discharged on-site without recycling, resulting in the frequent emission of white steam, which is unsightly and poses safety risks.

[0003] In the prior art, a hydrophobic expansion tank is used for hydrophobic water recovery. The hydrophobic expansion tank is expensive and arranged in the open air, occupying a large space and affecting the appearance. The hydrophobic expansion tank does not introduce cooling water for hydrophobic water cooling. The hydrophobic expansion tank is cooled by natural cooling and then discharged on site after the hydrophobic water is cooled. If the amount of hydrophobic water is large and there is no drainage measure, it is inconvenient to discharge the hydrophobic water. Summary of the Invention

[0004] Based on this, it is necessary to provide a drain recovery and discharge device and system for the existing technology, in which steam pipes are drained through drain expansion tanks. The drain expansion tanks are expensive and arranged in the open air, occupying a large space and affecting the appearance. The drain of the drain expansion tanks is not cooled by introducing cooling water. The drain is cooled by natural cooling and discharged on site. If the drain volume is large and there are no drainage measures, it is inconvenient to discharge the drain.

[0005] An embodiment of the present application provides a drain recovery and discharge device, the drain recovery and discharge device comprising: a first branch pipe, a cooling tank, a drain pipe group, and a plurality of isolation walls;

[0006] One end of the first branch pipe is connected to the main pipe for cooling water, and the other end is connected to the cooling tank;

[0007] The drain pipe group includes at least one group of branch pipes for draining; one end of at least one group of branch pipes is passed through the first side wall of the cooling pool and communicates with the interior of the cooling pool;

[0008] The second side wall of the cooling pool is provided with a steam hole;

[0009] The plurality of isolation walls are located in the cooling pool and are spaced apart from each other; the hydrophobic water can pass through the plurality of isolation walls in sequence;

[0010] The space between the second side wall and the isolation wall adjacent to the second side wall is connected to a rainwater well for discharging the drain water after cooling.

[0011] In the actual working process of the above hydrophobic recovery and discharge device, the hydrophobic water of the heating pipeline enters the desuperheating pool through the hydrophobic pipe group. The hydrophobic water expands and separates from steam and water in the desuperheating pool. The specific expansion position is the space between the first side wall and the partition wall adjacent to the first side wall. The expanded gas is discharged from the desuperheating pool through the steam holes. The hydrophobic water in the desuperheating pool is cooled in multiple stages through multiple partition walls of the desuperheating pool. The main desuperheating water pipeline and the first branch pipe enter the desuperheating pool, so as to cool the hydrophobic water entering the desuperheating pool and then discharge it into the rainwater well, which can ensure that the discharged hydrophobic water does not exceed the temperature, improve the efficiency of discharging hydrophobic water. The desuperheating pool is buried underground, does not occupy the passage, and has low construction cost.

[0012] In one embodiment, the hydrophobic pipe group includes a second branch pipe, a third branch pipe, and a fourth branch pipe that are spaced apart from each other;

[0013] One ends of the second branch pipe, the third branch pipe, and the fourth branch pipe all penetrate through the first side wall of the desuperheating pool and are communicated with the inside of the desuperheating pool;

[0014] The second branch pipe is used for introducing high-pressure hydrophobic water;

[0015] The third branch pipe is used for introducing medium-pressure hydrophobic water;

[0016] The fourth branch pipe is used for introducing low-pressure hydrophobic water.

[0017] In one embodiment, the hydrophobic recovery and discharge device further includes a first inlet pipe group, a second inlet pipe group, and a third inlet pipe group;

[0018] The first inlet pipe group includes a plurality of first liquid inlet pipes communicated with the second branch pipe, and the plurality of first liquid inlet pipes are respectively used for introducing high-pressure hydrophobic water at different temperatures and pressures;

[0019] The second inlet pipe group includes a plurality of second liquid inlet pipes communicated with the third branch pipe, and the plurality of second liquid inlet pipes are respectively used for introducing medium-pressure hydrophobic water at different temperatures and pressures;

[0020] The third inlet pipe group includes a plurality of third liquid inlet pipes communicated with the fourth branch pipe, and the plurality of third liquid inlet pipes are respectively used for introducing low-pressure hydrophobic water at different temperatures and pressures.

[0021] In one embodiment, the hydrophobic recovery and discharge device further includes a buried pipe. One end of the buried pipe is communicated with the inside of the desuperheating pool, and the other end is connected to the rainwater well for discharging the desuperheated hydrophobic water.

[0022] In one embodiment, the hydrophobic recovery and discharge device further includes a duckbill check valve and a drain pipe. One end of the drain pipe communicates with the inside of the desuperheating tank, and the other end is connected to the duckbill check valve. The end of the duckbill check valve facing away from the drain pipe is connected to the buried pipe, and the buried pipe is connected to the rainwater well for discharging the desuperheated hydrophobic water.

[0023] In one embodiment, the hydrophobic recovery and discharge device further includes an isolation valve. The isolation valve is arranged on the first branch pipe for controlling the desuperheating water to enter the desuperheating tank.

[0024] In one embodiment, the hydrophobic recovery and discharge device further includes a first heat insulation layer and a second heat insulation layer. The desuperheating tank is enclosed by reinforced concrete to form a closed space. The first heat insulation layer is laid on the inner wall of the desuperheating tank, and the second heat insulation layer is laid on the side of the first heat insulation layer facing away from the desuperheating tank.

[0025] In one embodiment, the hydrophobic recovery and discharge device further includes an evaporation cylinder and an exhaust pipe. The evaporation cylinder is arranged on the second side wall of the desuperheating tank and communicates with the inside of the desuperheating tank through the steam hole, and the exhaust pipe is communicated with the evaporation cylinder.

[0026] In one embodiment, the plurality of isolation walls include two first walls and a plurality of second walls. The two first walls are arranged at intervals along a first direction, and the first walls are provided with first holes. The two second walls are connected to the inner wall of the desuperheating tank around the circumferential direction of a second direction;

[0027] The plurality of second walls are arranged between the two first walls and are arranged at intervals along the first direction. The two ends of the second wall along the second direction are correspondingly connected to the opposite side walls of the desuperheating tank along the second direction. The bottom of the second wall is connected to the bottom wall of the desuperheating tank, and the top of the second wall is arranged at an interval from the top wall of the desuperheating tank;

[0028] The first direction, the second direction and the vertical direction are perpendicular to each other in pairs.

[0029] One embodiment of the present application further provides a hydrophobic recovery and discharge system, and the hydrophobic recovery and discharge system includes: a main pipeline and a plurality of the hydrophobic recovery and discharge devices;

[0030] The plurality of hydrophobic recovery and discharge devices are arranged at intervals in sequence along the extending direction of the main pipeline, and the distance between two adjacent hydrophobic recovery and discharge devices is less than or equal to 100 m.

[0031] In the actual working process of the above-mentioned hydrophobic recovery and discharge system, the hydrophobic water of the heating pipeline enters the desuperheating pool through the hydrophobic pipe group. The hydrophobic water expands and separates from steam and water in the desuperheating pool. The specific expansion position is the space between the first side wall and the partition wall adjacent to the first side wall. The expanded gas is discharged from the desuperheating pool through the steam holes. The hydrophobic water in the desuperheating pool is cooled in multiple stages through multiple partition walls of the desuperheating pool. The main desuperheating water pipeline and the first branch pipe enter the desuperheating pool, so as to cool the hydrophobic water entering the desuperheating pool and then discharge it into the rainwater well, which can ensure that the discharged hydrophobic water does not exceed the temperature, improve the efficiency of discharging hydrophobic water. The desuperheating pool is arranged underground, does not occupy the passage, and has low construction cost. Multiple desuperheating pools are connected through a main pipeline, so that more heating pipelines can share the main pipeline for desuperheating. The distance between two adjacent hydrophobic recovery and discharge devices is less than or equal to 100 m, so as to ensure the flow rate of desuperheating water entering each desuperheating pool, and prevent the desuperheating effect from deteriorating due to too dense desuperheating pools. Description of the Drawings

[0032] Figure 1 It is a schematic diagram of the hydrophobic recovery and discharge system of an embodiment.

[0033] Figure 2 is Figure 1 an enlarged view of the hydrophobic recovery and discharge device in

[0034] Figure 3 It is a cross-sectional view of the desuperheating pool of an embodiment.

[0035] Figure 4 It is a cross-sectional view of the desuperheating pool of another embodiment.

[0036] Explanation of the Reference Numerals in the Drawings:

[0037] 10 - hydrophobic recovery and discharge device;

[0038] 100 - first branch pipe; 110 - isolation valve;

[0039] 200 - desuperheating pool; 210 - first side wall; 220 - second side wall; 201 - steam hole; 202 - maintenance hole; 230 - evaporation cylinder; 240 - exhaust pipe; 250 - cover plate;

[0040] 300 - hydrophobic pipe group; 310 - second branch pipe; 320 - third branch pipe; 330 - fourth branch pipe;

[0041] 400 - partition wall; 410 - first wall; 410a - first hole; 420 - second wall;

[0042] 500 - first inlet pipe group; 510 - first liquid inlet pipe;

[0043] 600 - second inlet pipe group; 610 - second liquid inlet pipe;

[0044] 700-third inlet pipe group; 710-third liquid pipe;

[0045] 800-Buried pipe; 810-Duckbill check valve; 820-Drain pipe;

[0046] 20-drain recovery and discharge system; 21-main pipeline;

[0047] OX-first direction; OY-second direction; OZ-vertical direction. DETAILED DESCRIPTION

[0048] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0049] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0050] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0051] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] In this application, unless otherwise clearly defined and limited, if there is a description such as the first feature being "on" or "under" the second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or just means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the first feature has a lower horizontal height than the second feature.

[0053] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0054] Refer to Figure 1 , Figure 1 shows a schematic structural diagram of the hydrophobic recovery and discharge system 20 in an embodiment of this application. Figure 2 For Figure 1 the hydrophobic recovery and discharge device 10 in, an embodiment of this application provides a hydrophobic recovery and discharge device 10 including: a first branch pipe 100, a cooling pond 200, a hydrophobic pipe group 300, and a plurality of partition walls 400.

[0055] The above-mentioned hydrophobic recovery and discharge device 10, one end of the first branch pipe 100 is communicated with the main pipe 21 into which desuperheating water is introduced, and the other end is communicated with the desuperheating tank 200. The drain pipe group 300 includes at least one group of branch pipes into which drain water is introduced; one end of at least one group of branch pipes penetrates through the side wall of the desuperheating tank 200 and is communicated with the inside of the desuperheating tank 200. A steam hole 201 is opened on the second side wall 220 of the desuperheating tank 200. A plurality of partition walls 400 are located in the desuperheating tank 200 and are arranged at intervals from each other, and the drain water can sequentially pass through the plurality of partition walls 400. The space between the second side wall 220 and the partition wall 400 adjacent to the second side wall 220 is connected to the rainwater well for discharging the desuperheated drain water.

[0056] During the actual working process of the above-mentioned hydrophobic recovery and discharge device 10, the drain water of the heating pipeline enters the desuperheating tank 200 through the drain pipe group 300, and the drain water expands and is separated from steam and water in the desuperheating tank 200. The specific expansion position is the space between the first side wall 210 and the partition wall 400 adjacent to the first side wall 210. The expanded gas is discharged from the desuperheating tank 200 through the steam hole 201, and the drain water in the desuperheating tank 200 is multi-stage cooled through the plurality of partition walls 400 of the desuperheating tank 200. The desuperheating water main pipeline and the first branch pipe 100 enter the desuperheating tank, so as to cool the drain water entering the desuperheating tank and then discharge it into the rainwater well, which can ensure that the discharged drain water does not exceed the temperature, improve the efficiency of discharging the drain water. The desuperheating tank 200 is arranged buried underground, does not occupy the passage, and has low construction cost.

[0057] Preferably, the first side wall 210 and the second side wall 220 are oppositely arranged along the first direction OX, and a plurality of partition walls 400 are located in the desuperheating tank 200 and are sequentially arranged at intervals along the first direction OX.

[0058] Refer to Figure 2 In one embodiment, the drain pipe group 300 includes a second branch pipe 310, a third branch pipe 320, and a fourth branch pipe 330 that are arranged at intervals from each other; one ends of the second branch pipe 310, the third branch pipe 320, and the fourth branch pipe 330 all penetrate through the first side wall 210 of the desuperheating tank 20 and are communicated with the inside of the desuperheating tank 200; the second branch pipe 310 is used for introducing high-pressure drain water; the third branch pipe 320 is used for introducing medium-pressure drain water; the fourth branch pipe 330 is used for introducing low-pressure drain water. Thus, according to the working conditions of the actual plant, any one of the second branch pipe 310, the third branch pipe 320, and the fourth branch pipe 330 can be selected to introduce drain water with different working conditions into the desuperheating tank 200.

[0059] Refer to Figure 2, in one embodiment, the hydrophobic recovery and discharge device 10 further includes a first inlet pipe group 500, a second inlet pipe group 600, and a third inlet pipe group 700. The first inlet pipe group 500 includes a plurality of first liquid inlet pipes 510 communicating with the second branch pipes 310, and the plurality of first liquid inlet pipes 510 are respectively used for introducing high-pressure hydrophobic water at different temperatures and pressures. The second inlet pipe group 600 includes a plurality of second liquid inlet pipes 610 communicating with the third branch pipes 320, and the plurality of second liquid inlet pipes 610 are respectively used for introducing medium-pressure hydrophobic water at different temperatures and pressures. The third inlet pipe group 700 includes a plurality of third liquid inlet pipes 710 communicating with the fourth branch pipes 330, and the plurality of third liquid inlet pipes 710 are respectively used for introducing low-pressure hydrophobic water at different temperatures and pressures. In this embodiment, hydrophobic recovery can be carried out for factories with a large number of high-pressure hydrophobic discharge pipes, a large number of medium-pressure hydrophobic discharge pipes, and a large number of low-pressure hydrophobic discharge pipes. Moreover, the hydrophobic flow rate entering the cooling pool 200 can be controlled by opening or closing the number of first liquid inlet pipes 510, the hydrophobic flow rate entering the cooling pool 200 can be controlled by opening or closing the number of second liquid inlet pipes 610, and the hydrophobic flow rate entering the cooling pool 200 can be controlled by opening or closing the number of third liquid inlet pipes 710, so as to be applicable to factories under different working conditions.

[0060] Among them, generally, the pressure of high-pressure hydrophobic water is 9.7 Mpa.g and the temperature is 530 °C. The pressure of medium-pressure hydrophobic water is 3.71 Mpa.g and the temperature is 395 °C. The pressure of low-pressure hydrophobic water is 1.2 Mpa.g and the temperature is 257 °C.

[0061] Refer to Figure 2 , in one embodiment, the hydrophobic recovery and discharge device 10 further includes a buried pipe 800. One end of the buried pipe 800 communicates with the inside of the cooling pool 200, and the other end is connected to a rainwater well for discharging the hydrophobic water after cooling.

[0062] Refer to Figure 2 , in one embodiment, the hydrophobic recovery and discharge device 10 further includes a duckbill check valve 810 and a drain pipe 820. One end of the drain pipe 820 communicates with the inside of the cooling pool 200, and the other end is connected to the duckbill check valve 810. The end of the duckbill check valve 810 facing away from the drain pipe 820 communicates with the buried pipe 800, and the buried pipe 800 is connected to the rainwater well for discharging the hydrophobic water after cooling, so as to prevent rainwater from flowing back into the cooling pool 200 by setting the duckbill check valve 810.

[0063] Preferably, one end of the drain pipe 820 is connected to the bottom wall of the desuperheating pool between the second side wall 220 and the partition wall 400 adjacent to the second side wall 220. In this way, after the condensed water enters the first side wall 210 through the second branch pipe 310, the third branch pipe 320, and the fourth branch pipe 330, it can pass through the drain pipe 820, the duckbill check valve 810, and the buried pipe 800 in sequence along the first direction OX and be discharged into the rainwater well.

[0064] Refer to Figure 2 , in one embodiment, the condensed water recovery and discharge device 10 further includes an isolation valve 110. The isolation valve 110 is arranged on the first branch pipe 100 and is used to control the desuperheating water from entering the desuperheating pool. In this way, when desuperheating water is not required, the isolation valve 110 can be closed, so that only the desuperheating pool 200 is used to cool down and discharge the condensed water.

[0065] In one embodiment, the condensed water recovery and discharge device 10 further includes a first heat insulation layer (not shown in the figure) and a second heat insulation layer (not shown in the figure). The desuperheating pool 200 is surrounded by reinforced concrete to form a closed space. The first heat insulation layer is laid on the inner wall of the desuperheating pool 200, and the second heat insulation layer is laid on the side of the first heat insulation layer away from the desuperheating pool 200, so as to prevent the concrete material from failing in the case of high-temperature condensed water and serve as multiple protection measures when the steam trap or desuperheating water fails. Specifically, the materials of the first heat insulation layer and the second heat insulation layer are high-temperature resistant materials. The high-temperature resistant materials are ceramsite concrete and mortar masonry sintered clay bricks, and can also be other ceramic materials, which are not limited here.

[0066] Specifically, a steel plate is arranged at the bottom of the desuperheating pool 200 to prevent the steam from scouring the desuperheating pool 200. If the partition walls are arranged in sequence along the vertical direction, a steel plate is arranged on the first wall close to the first side wall to prevent the steam from scouring the desuperheating pool 200.

[0067] Refer to Figure 2 , in one embodiment, the condensed water recovery and discharge device 10 further includes an evaporation cylinder 230 and an exhaust pipe 240. The evaporation cylinder 230 is arranged on the second side wall 220 of the desuperheating pool 200 and is communicated with the inside of the desuperheating pool 200 through a steam hole 201. The exhaust pipe 240 is communicated with the evaporation cylinder 230.

[0068] Refer to Figure 2 , Figure 3 and Figure 4, in one embodiment, the plurality of partition walls 400 includes two first walls 410 and a plurality of second walls 420. The two first walls 410 are arranged at intervals along the first direction OX. The first wall 410 is provided with a first hole 410a. The two second walls 420 are connected to the inner wall of the cooling pond 200 around the circumferential direction of the second direction OY. The plurality of second walls 420 are arranged between the two first walls 410 and are arranged at intervals along the first direction OX. The two ends of the second wall 420 along the second direction OY are correspondingly connected to the opposite side walls of the cooling pond 200 along the second direction OY. The bottom of the second wall 420 is connected to the bottom wall of the cooling pond 200, and the top of the second wall 420 is arranged at an interval from the top wall of the cooling pond. The first direction OX, the second direction OY, and the vertical direction OZ are perpendicular to each other in pairs.

[0069] Refer to Figure 2 , Figure 3 and Figure 4 , in this embodiment, the hydrophobic water sequentially passes through one of the first holes 410a, the gap between the top of the plurality of second walls 420 and the top wall of the cooling pond 200, and the other first hole 410a, and then the hydrophobic water is discharged to the rainwater well through the buried pipe 800, and the expanded gas is discharged through the steam hole 201.

[0070] Specifically, the outlet of the exhaust pipe 240 is located at a height of 3 m above the ground.

[0071] Refer to Figure 2 , Figure 3 and Figure 4 , in other embodiments, the hydrophobic pipe group 300 and the steam hole 201 are both communicated with the space between the first side wall 210 and the first wall 410 adjacent to the first side wall 210.

[0072] Refer to Figure 2 , Figure 3 and Figure 4 , in other embodiments, the plurality of partition walls 400 are arranged at intervals in sequence along the vertical direction OZ, and the hydrophobic pipe group 300 and the steam hole 201 are both communicated with the space between the first wall 410 at the top and the top wall of the cooling pond 200.

[0073] Refer to Figure 2 , Figure 3 and Figure 4 , specifically, the first hole 410a is opened at one end of the bottom of the first wall 410 close to the bottom wall of the cooling pond 200, so as to increase the flow path of the hydrophobic water and steam in the cooling pond 200 along the first direction OX.

[0074] Refer to Figure 2 , Figure 3 and Figure 4Preferably, along the first direction OX close to the steam hole 201, the distance between the plurality of second walls 420 and the inner wall of the cooling pool 200 gradually decreases, thereby forming a stepped path with successively increasing height between the two first walls 410.

[0075] See Figure 4 In other embodiments, the spacing between the second walls 420 and the side walls of the cooling pool 200 gradually decreases along the vertical direction OZ toward the bottom wall, thereby forming a stepped path with increasing height between the two first walls 410 .

[0076] In other embodiments, a first wall 410 is provided only on the side of the second wall 420 away from the steam hole 201, the first wall 410 is provided with a first hole 410a, and the second wall 420 close to the second side wall 220 along the first direction OX is provided with a first hole 410a, and the distance between the multiple second walls 420 and the top wall of the cooling pool 200 in the vertical direction OZ gradually decreases.

[0077] See Figure 3 In one embodiment, the hydrophobic recovery and discharge device 10 further includes a cover plate 250. A maintenance hole 202 is opened on the side wall of the cooling tank 200. A ladder is provided in the maintenance hole 202. The cover plate 250 is rotatably connected to the top wall of the cooling tank 200 and can cover or open the maintenance hole 202. Thus, by opening the cover plate 250, maintenance personnel can enter the cooling tank 200 and perform maintenance and cleaning on the interior of the cooling tank 200. When the cover plate 250 covers the maintenance hole 202, the cooling tank 200 is ensured to be a closed space.

[0078] Specifically, the end of the first branch pipe 100 facing away from the main pipe 21 is connected between the first wall 410 close to the first side wall 210 and the second wall 420 adjacent to the first wall 410, so that the hydrophobic water can first expand after entering the cooling pool 200, and then the hydrophobic water can be cooled after passing through the first hole 410a of the first wall 410 close to the first side wall 210.

[0079] See Figure 1 and Figure 2 An embodiment of the present application further provides a hydrophobic recovery and discharge system 20 , which includes: a main pipeline 21 and a plurality of hydrophobic recovery and discharge devices 10 .

[0080] The plurality of drain recovery and discharge devices 10 are sequentially arranged at intervals along the extension direction of the main pipeline 21 , and the distance between two adjacent drain recovery and discharge devices 10 is less than or equal to 100 m.

[0081] During the actual operation of the above-mentioned hydrophobic recovery and drainage system 20, the hydrophobic water from the heating pipeline enters the desuperheating tank 200 through the hydrophobic pipe group 300. The hydrophobic water expands and separates from steam and water in the desuperheating tank 200. The specific expansion position is the space between the first side wall 210 and the partition wall 400 adjacent to the first side wall 210. The expanded gas is discharged from the desuperheating tank 200 through the steam holes 201. The hydrophobic water in the desuperheating tank 200 is cooled in multiple stages through the multiple partition walls 400 of the desuperheating tank 200. The main desuperheating water pipeline and the first branch pipe 100 enter the desuperheating tank, so as to cool the hydrophobic water entering the desuperheating tank and then discharge it into the rainwater well, which can ensure that the discharged hydrophobic water does not exceed the temperature, improve the efficiency of discharging hydrophobic water. The desuperheating tank 200 is arranged underground, does not occupy the passage, and has low construction cost. A main pipeline 21 is connected to multiple desuperheating tanks 200, so that more heating pipelines can share the main pipeline 21 for desuperheating. The distance between two adjacent hydrophobic recovery and drainage devices 10 is less than or equal to 100 m, so as to ensure the flow rate of the desuperheating water entering each desuperheating tank 200, and prevent the desuperheating effect from deteriorating due to the overcrowding of the desuperheating tanks 200.

[0082] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0083] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A hydrophobic recovery and discharge device, characterized in that, The hydrophobic recovery and discharge device includes: a first branch pipe, a desuperheating tank, a hydrophobic pipe group, and a plurality of partition walls; One end of the first branch pipe is connected to the main pipe for introducing desuperheating water, and the other end is connected to the desuperheating tank; The hydrophobic pipe group includes at least one group of branch pipes for introducing hydrophobic water; one end of at least one group of the branch pipes penetrates through the first side wall of the desuperheating tank and is connected to the inside of the desuperheating tank; A steam hole is formed in the second side wall of the desuperheating tank; A plurality of the partition walls are located in the desuperheating tank and are arranged at intervals from each other; the hydrophobic water can sequentially pass through the plurality of partition walls; 2. The hydrophobic recovery and discharge device according to claim 1, characterized in that, The space between the second side wall and the partition wall adjacent to the second side wall is connected to a rainwater well for discharging the desuperheated hydrophobic water. The hydrophobic pipe group includes a second branch pipe, a third branch pipe, and a fourth branch pipe that are arranged at intervals from each other; One end of the second branch pipe, the third branch pipe, and the fourth branch pipe all penetrates through the first side wall of the desuperheating tank and is connected to the inside of the desuperheating tank; The second branch pipe is used for introducing high-pressure hydrophobic water; The third branch pipe is used for introducing medium-pressure hydrophobic water; 3. The hydrophobic recovery and discharge device according to claim 2, wherein, The fourth branch pipe is used for introducing low-pressure hydrophobic water. The hydrophobic recovery and discharge device further includes a first inlet pipe group, a second inlet pipe group, and a third inlet pipe group; The first inlet pipe group includes a plurality of first liquid inlet pipes connected to the second branch pipe, and the plurality of first liquid inlet pipes are respectively used for introducing high-pressure hydrophobic water at different temperatures and pressures; The second inlet pipe group includes a plurality of second liquid inlet pipes connected to the third branch pipe, and the plurality of second liquid inlet pipes are respectively used for introducing medium-pressure hydrophobic water at different temperatures and pressures; 4. The hydrophobic recovery and discharge device according to claim 1, characterized in that The third inlet pipe group includes a plurality of third liquid inlet pipes connected to the fourth branch pipe, and the plurality of third liquid inlet pipes are respectively used for introducing low-pressure hydrophobic water at different temperatures and pressures.

5. The hydrophobic recovery and discharge device according to claim 4, characterized in that, The hydrophobic recovery and discharge device further includes a buried pipe, one end of the buried pipe is connected to the inside of the desuperheating tank, and the other end is connected to the rainwater well for discharging the desuperheated hydrophobic water.

6. The hydrophobic recovery and discharge device according to claim 1, characterized in that, The hydrophobic recovery and discharge device further includes a duckbill check valve and a drain pipe. One end of the drain pipe is connected to the inside of the desuperheating tank, and the other end is connected to the duckbill check valve. The end of the duckbill check valve facing away from the drain pipe is connected to the buried pipe, and the buried pipe is connected to the rainwater well for discharging the desuperheated hydrophobic water.

7. The hydrophobic recovery and discharge device according to claim 1, characterized in that, The hydrophobic recovery and discharge device further includes an isolation valve, and the isolation valve is arranged on the first branch pipe for controlling the entry of desuperheating water into the desuperheating tank.

8. The hydrophobic recovery and discharge device according to claim 1, characterized in that, The hydrophobic recovery and discharge device further includes a first heat insulation layer and a second heat insulation layer. The desuperheating tank is enclosed by reinforced concrete into a closed space. The first heat insulation layer is laid on the inner wall of the desuperheating tank, and the second heat insulation layer is laid on the side of the first heat insulation layer facing away from the desuperheating tank. The hydrophobic recovery and discharge device further includes an evaporation cylinder and an exhaust pipe. The evaporation cylinder is arranged on the second side wall of the desuperheating tank and is connected to the inside of the desuperheating tank through the steam hole, and the exhaust pipe is connected to the evaporation cylinder.

9. The hydrophobic recovery and discharge device according to claim 1, characterized in that, The multiple partition walls include two first walls and multiple second walls. The two first walls are arranged at intervals along a first direction. The first walls are provided with first holes. The multiple second walls are connected to the inner wall of the desuperheating pool around the circumferential direction of a second direction; The multiple second walls are arranged between the two first walls and are arranged at intervals along the first direction. The two ends of the second wall along the second direction are correspondingly connected to the two opposite side walls of the desuperheating pool along the second direction. The bottom of the second wall is connected to the bottom wall of the desuperheating pool. The top of the second wall is arranged at an interval from the top wall of the desuperheating pool; The first direction, the second direction and the vertical direction are perpendicular to each other in pairs.

10. A hydrophobic recovery and discharge system, characterized in that, The hydrophobic recovery and discharge system includes: a main pipeline and multiple hydrophobic recovery and discharge devices according to any one of claims 1-9; The multiple hydrophobic recovery and discharge devices are arranged at intervals in sequence along the extension direction of the main pipeline. The distance between two adjacent hydrophobic recovery and discharge devices is less than or equal to 100 m.

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