CN219640232U

CN219640232U - Drainage recovery system

Info

Publication number: CN219640232U
Application number: CN202321122288.0U
Authority: CN
Inventors: 邓成刚; 黄志远; 范永春; 白建基; 朱军辉; 张红霞; 郑军; 李伟科; 王晓东; 周玉
Original assignee: China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
Current assignee: China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-09-05
Anticipated expiration: 2033-05-10

Abstract

The utility model discloses a drainage recovery system, which comprises a sewage spreading container, a first conveying component, a second conveying component and a circulating cooling device, wherein the sewage spreading container, the first conveying component, the second conveying component and the circulating cooling device are sequentially communicated, the first conveying component comprises a first conveying pipe and a second conveying pipe which are arranged in parallel, a first high-temperature water supply pump is arranged on the first conveying pipe, a second high-temperature water supply pump is arranged on the second conveying pipe, the second conveying component comprises a third conveying pipe and a fourth conveying pipe which are arranged in parallel, a first valve which is arranged corresponding to the first high-temperature water supply pump is arranged on the third conveying pipe, a second valve which is arranged corresponding to the second high-temperature water supply pump is arranged on the fourth conveying pipe, the circulating cooling device comprises a first circulating part and a second circulating part, the first circulating part comprises a first cooling tower and a first condenser which are arranged on a first circulating pipeline, the second circulating part comprises a second cooling tower and a second condenser which are arranged on a second circulating pipeline, the third conveying pipe is communicated with the first circulating pipeline, and the fourth conveying pipe is communicated with the second circulating pipeline.

Description

Drainage recovery system

Technical Field

The utility model is used in the technical field of water circulation, and particularly relates to a drainage recovery system.

Background

At present, subcritical coal machines, large and medium-sized combustion engines and garbage power plants are all provided with periodic sewage disposal expansion vessels, when a unit is started or operated, sewage is discharged to a periodic sewage disposal well by a steam drum or a deaerator, water in the well is discharged to chemical treatment by a sewage disposal pump and then recycled, at present, the sewage disposal pump is a common centrifugal pump, the medium temperature cannot exceed 80 ℃, so that the sewage disposal pipeline or the well also needs to be supplemented with temperature-reducing water, the sewage disposal pump is not damaged by the medium overtemperature, the circulating water needs to be always supplemented with industrial water, and the sewage ensures that the circulating water temperature is high in the circulating process, thereby ensuring that the unit operates with high heat consumption.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art and provide a drainage recovery system which has good energy-saving effect.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a drainage recovery system, includes the blowdown flash vessel that communicates in proper order, first conveying part, second conveying part and circulation cooling device, first conveying part is including first conveyer pipe and the second conveyer pipe that set up side by side, be equipped with first high temperature feed water pump on the first conveyer pipe, be equipped with the second high temperature feed water pump on the second conveyer pipe, second conveying part is including third conveyer pipe and the fourth conveyer pipe that set up side by side, be equipped with on the third conveyer pipe with the first valve that first high temperature feed water pump corresponds the setting, be equipped with on the fourth conveyer pipe with the second valve that the second high temperature feed water pump corresponds the setting, circulation cooling device includes first circulation portion and second circulation portion, first circulation portion is including setting up first cooling tower and the first condenser on first circulation pipeline, second circulation portion is including setting up second cooling tower and the second condenser on the second circulation pipeline, the third conveyer pipe with first circulation pipeline is linked together, the fourth conveyer pipe is linked together with the second circulation pipeline.

Preferably, the first circulation pipeline comprises a first circulation forehearth, the first circulation forehearth is arranged between the first cooling tower and the first condenser, the second circulation pipeline comprises a second circulation forehearth, and the second circulation forehearth is arranged between the second cooling tower and the second condenser.

Preferably, the connection part of the third conveying pipe and the first circulation pipeline, the first cooling tower, the first circulation foretank and the first condenser are sequentially arranged on the first circulation pipeline along the water flow direction, and the connection part of the fourth conveying pipe and the second circulation pipeline, the second cooling tower, the second circulation foretank and the second condenser are sequentially arranged on the second circulation pipeline along the water flow direction.

Preferably, the connection part of the third conveying pipe and the first circulation pipeline, the first cooling tower, the first circulation foretank and the first condenser are sequentially arranged, and the connection part of the fourth conveying pipe and the second circulation pipeline, the second cooling tower, the second circulation foretank and the second condenser are sequentially arranged.

Preferably, the first circulation pipeline and the second circulation pipeline are sequentially arranged along the left-right direction, the first circulation pipeline is positioned at the left side of the second circulation pipeline, and the first circulation forehearth and the second circulation forehearth are mutually communicated.

Preferably, a communicating pipe is arranged between the first circulating forehearth and the second circulating forehearth, and a third valve is arranged on the communicating pipe.

Preferably, a first filter screen is arranged on the first conveying pipe, the first filter screen is positioned between the blowdown flash tank and the first high-temperature water supply pump, a second filter screen is arranged on the second conveying pipe, and the second filter screen is positioned between the blowdown flash tank and the second high-temperature water supply pump.

Preferably, a sewage drain well for storing sewage is arranged between the sewage drain expansion vessel and the first conveying component, a third filter screen is arranged at the water inlet end of the first conveying component, and the third filter screen is positioned in the sewage drain well.

Preferably, the sewage well is internally provided with a high water level detection point, a constant water level detection point and a low water level and low water level detection point which are sequentially arranged along the height direction.

Preferably, the blowdown flash vessel comprises a regular drainage flash vessel and a drainage flash vessel, wherein the water outlet end of the regular drainage flash vessel is communicated with the blowdown well, and the water outlet end of the drainage flash vessel is communicated with the blowdown well.

One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the drainage recovery system, a drain pump in the prior art is changed into a high-temperature-resistant water supply pump from a conventional heart-clearing pump, so that industrial water does not need to be continuously supplemented into a first conveying component, the energy-saving effect of the drainage recovery system is improved, the drainage recovery system directly discharges sewage to a first conveying pipe/a second conveying pipe of a circulating cooling device through the first conveying component and the second conveying component, then the sewage is processed through the first cooling tower/the second cooling tower and then is circulated into the first condenser/the second condenser through a first circulating forehearth/a second circulating forehearth, gas in the sewage is discharged into the atmosphere under the treatment of the first cooling tower/the second cooling tower, the influence on the back pressure of the first condenser/the second condenser is avoided, the first high-temperature water supply pump and/or the second high-temperature water supply pump are used for pressurizing the sewage and then conveying the sewage to the circulating cooling device, the first high-temperature pump and the second high-temperature pump are operated in parallel, and particularly, the opening and closing of a first valve and/or the second valve are controlled through the water quantity, the first circulating portion and the second circulating portion are controlled, the energy consumption is reduced, the water consumption is prevented from overflowing from the water supply system, and the high-temperature-saving effect is avoided.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an embodiment of the present utility model.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

In which fig. 1 shows a reference direction coordinate system of an embodiment of the present utility model, and the embodiment of the present utility model is described below with reference to the directions shown in fig. 1.

The embodiment of the utility model provides a drainage recovery system, referring to fig. 1, comprising a blowdown flash tank 100, a first conveying component 200, a second conveying component 300 and a circulating cooling device 400 which are sequentially communicated, wherein the first conveying component 200 comprises a first conveying pipe 210 and a second conveying pipe 220 which are arranged in parallel, a first high-temperature water supply pump 211 is arranged on the first conveying pipe 210, a second high-temperature water supply pump 221 is arranged on the second conveying pipe 220, the second conveying component 300 comprises a third conveying pipe 310 and a fourth conveying pipe 320 which are arranged in parallel, a first valve 311 which is arranged on the third conveying pipe 310 and corresponds to the first high-temperature water supply pump 211 is arranged on the fourth conveying pipe 320, a second valve 321 which is arranged corresponding to the second high-temperature water supply pump 221 is arranged on the fourth conveying pipe 320, the circulating cooling device 400 comprises a first circulating part 410 and a second circulating part 420, the first circulation part 410 comprises a first cooling tower 412 and a first condenser 413 which are arranged on a first circulation pipeline 411, the second circulation part 420 comprises a second cooling tower 422 and a second condenser 423 which are arranged on a second circulation pipeline 421, the third conveying pipe 310 is communicated with the first circulation pipeline 411, the fourth conveying pipe 320 is communicated with the second circulation pipeline 421, the drainage recovery system changes a drainage pump in the prior art from a conventional heart-fire clearing pump into a high-temperature resistant feed water pump, so industrial water does not need to be continuously supplemented into the first conveying component 200, the energy saving effect of the drainage recovery system is improved, the drainage recovery system discharges sewage to the first conveying pipe 210/the second conveying pipe 220 of the circulation cooling device 400 directly through the first conveying component 200 and the second conveying component 300, and then after the sewage is treated by the first cooling tower 412/the second cooling tower 422, and then the sewage is circulated to the first condenser 413/second condenser 423 through the first circulation front tank 414/second circulation front tank 424, wherein the gas in the sewage is discharged to the atmosphere under the treatment of the first cooling tower 412/second cooling tower 422, the back pressure of the first condenser 413/second condenser 423 is prevented from being influenced, the sewage is pressurized by the first high-temperature water feed pump 211 and/or the second high-temperature water feed pump 221 and then is conveyed to the circulating cooling device 400, the first high-temperature water feed pump 211 and the second high-temperature water feed pump 221 are operated in parallel, the circulating cooling device 400 is supplemented with water, specifically, the opening and closing of the first valve 311 and/or the second valve 321 can be controlled by the water quantity so as to control the work or rest of the first circulation part 410 and/or the second circulation part 420, and the parallel time of the first high-temperature water feed pump 211 and the second high-temperature water feed pump 221 is prevented from overflowing by controlling the water quantity in the circulating cooling device 400, so that the energy saving effect of the drainage recovery system is realized.

Preferably, referring to fig. 1, the first circulation pipeline 411 includes a first pre-circulation tank 414, the first pre-circulation tank 414 is disposed between the first cooling tower 412 and the first condenser 413, the second circulation pipeline 421 includes a second pre-circulation tank 424, the second pre-circulation tank 424 is disposed between the second cooling tower 422 and the second condenser 423, the drainage recovery system changes the scheme of directly guiding sewage into the first pre-circulation tank 414/the second pre-circulation tank 424 in the prior art, firstly, the sewage is treated by the first cooling tower 412/the second cooling tower 422, and then is circulated into the first condenser 413/the second condenser 423 by the first pre-circulation tank 414/the second pre-circulation tank 424, so that after the sewage is cooled by the first cooling tower 412/the second cooling tower 422, the gas therein is discharged into the atmosphere, thereby avoiding affecting the back pressure of the first condenser 413/the second condenser 423.

As a preferred embodiment of the present utility model, referring to fig. 1, a connection portion 415 of the third transfer pipe 310 and the first circulation line 411, the first cooling tower 412, the first pre-circulation tank 414, and the first condenser 413 are sequentially disposed on the first circulation line 411 in a water flow direction, and a connection portion 425 of the fourth transfer pipe 320 and the second circulation line 421, the second cooling tower 422, the second pre-circulation tank 424, and the second condenser 423 are sequentially disposed on the second circulation line 421 in a water flow direction.

Referring to fig. 1, in some embodiments, the connection 415 of the third transfer pipe 310 to the first circulation line 411, the first cooling tower 412, the first pre-circulation tank 414, and the first condenser 413 are sequentially disposed clockwise, and the connection 425 of the fourth transfer pipe 320 to the second circulation line 421, the second cooling tower 422, the second pre-circulation tank 424, and the second condenser 423 are disposed counterclockwise.

As a preferred embodiment of the present utility model, referring to fig. 1, a first circulation line 411 and a second circulation line 421 are sequentially provided in a left-right direction, the first circulation line 411 is located at the left side of the second circulation line 421, and a first circulation foretank 414 and a second circulation foretank 424 are communicated with each other.

Referring to fig. 1, in some embodiments, a communication pipe 500 is provided between the first pre-circulation tank 414 and the second pre-circulation tank 424, and a third valve is provided on the communication pipe 500.

As a preferred embodiment of the present utility model, referring to fig. 1, a first filter screen 212 is disposed on a first delivery pipe 210, the first filter screen 212 is disposed between the blowdown flash vessel 100 and a first high temperature water supply pump 211, a second filter screen 222 is disposed on a second delivery pipe 220, and the second filter screen 222 is disposed between the blowdown flash vessel 100 and a second high temperature water supply pump 221.

As a preferred embodiment of the present utility model, referring to fig. 1, a drain well 600 for storing sewage is provided between the drain diffuser 100 and the first transporting member 200, and a third filter 230 is provided at the water inlet end of the first transporting member 200, and the third filter 230 is positioned in the drain well 600.

As a preferred embodiment of the present utility model, a high water level detection point, a normal water level detection point and a low water level detection point are sequentially arranged in the height direction in the trapway 600, specifically, when the water level in the trapway 600 is near the low water level detection point, neither the first high temperature water feed pump 211 nor the second high temperature water feed pump 221 is turned on. When the water level in the sewage well 600 reaches the constant water level detection point, 1 water feed pump is started, namely, the first high temperature water feed pump 211 or the second high temperature water feed pump 221 is started, and when the water level in the sewage well 600 reaches the high water level detection point, the other water feed pump is started, namely, the two first high temperature water feed pumps 211 and the second high temperature water feed pumps 221 are operated simultaneously, preferably, when one tire of water feed pump is operated, namely, the first high temperature water feed pump 211 or the second high temperature water feed pump 221 is operated, the other water feed pump is in that state, and it can be understood that when the water feed pump is started and operated, the corresponding valves are synchronously opened and closed.

In certain embodiments, the blowdown flash vessel 100 comprises a periodic drain flash vessel 110 and a hydrophobic flash vessel 120, the water outlet end of the periodic drain flash vessel 110 being in communication with the blowdown well 600 and the water outlet end of the hydrophobic flash vessel 120 being in communication with the blowdown well 600.

Preferably, the first high temperature water feed pump 211/the second high temperature water feed pump 221 are high temperature resistant hydrophobic pumps, or high temperature resistant hydrophilic ion pumps, etc., and the high temperature resistant industry refers in particular to a high temperature resistant to 100 ℃ and above, preferably, the high temperature water feed pump/the high temperature resistant hydrophilic ion pump/the high temperature resistant hydrophobic pump can resist the high temperature of 120 ℃, in other words, the high temperature water feed pump/the high temperature resistant hydrophilic ion pump/the high temperature resistant hydrophobic pump in the scheme can keep working normally at the high temperature of above 120 ℃.

After the drainage recovery system is applied to a gas turbine power plant, the operation hours are 3300 hours, the online electricity price is calculated according to 0.51 yuan/kW.h, the circulating water temperature of each machine is reduced by 0.18 ℃, the drainage recovery system can reduce the back pressure of a condenser of the machine set by about 0.1kPa, the power generation is affected by 15.4 ten thousand degrees each year, and the benefit is increased by 7.8 ten thousand yuan/a.

In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and these equivalent modifications or substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims

1. A drainage recovery system, characterized by: the novel sewage treatment device comprises a sewage spreading container, a first conveying component, a second conveying component and a circulating cooling device, wherein the first conveying component comprises a first conveying pipe and a second conveying pipe which are arranged in parallel, a first high-temperature water supply pump is arranged on the first conveying pipe, a second high-temperature water supply pump is arranged on the second conveying pipe, the second conveying component comprises a third conveying pipe and a fourth conveying pipe which are arranged in parallel, a first valve which corresponds to the first high-temperature water supply pump is arranged on the third conveying pipe, a second valve which corresponds to the second high-temperature water supply pump is arranged on the fourth conveying pipe, the circulating cooling device comprises a first circulating part and a second circulating part, the first circulating part comprises a first cooling tower and a first condenser which are arranged on a first circulating pipeline, the second circulating part comprises a second cooling tower and a second condenser which are arranged on a second circulating pipeline, the third conveying pipe is communicated with the first circulating pipeline, and the fourth conveying pipe is communicated with the second circulating pipeline.

2. The drain recovery system according to claim 1, wherein: the first circulation pipeline comprises a first circulation forehearth, the first circulation forehearth is arranged between the first cooling tower and the first condenser, the second circulation pipeline comprises a second circulation forehearth, and the second circulation forehearth is arranged between the second cooling tower and the second condenser.

3. The drain recovery system according to claim 2, wherein: the connecting part of the third conveying pipe and the first circulating pipeline, the first cooling tower, the first circulating foretank and the first condenser are sequentially arranged on the first circulating pipeline along the water flow direction, and the connecting part of the fourth conveying pipe and the second circulating pipeline, the second cooling tower, the second circulating foretank and the second condenser are sequentially arranged on the second circulating pipeline along the water flow direction.

4. A drain recovery system according to claim 3, wherein: the third conveying pipe is sequentially arranged with the connecting part of the first circulating pipeline, the first cooling tower, the first circulating foretank and the first condenser, and the fourth conveying pipe is sequentially arranged with the connecting part of the second circulating pipeline, the second cooling tower, the second circulating foretank and the second condenser.

5. The drain recovery system according to claim 4, wherein: the first circulation pipeline and the second circulation pipeline are sequentially arranged along the left-right direction, the first circulation pipeline is positioned on the left side of the second circulation pipeline, and the first circulation forehearth and the second circulation forehearth are mutually communicated.

6. The drain recovery system according to claim 5, wherein: a communicating pipe is arranged between the first circulating forehearth and the second circulating forehearth, and a third valve is arranged on the communicating pipe.

7. The drain recovery system according to claim 1, wherein: the first conveying pipe is provided with a first filter screen, the first filter screen is positioned between the blowdown flash tank and the first high-temperature water supply pump, the second conveying pipe is provided with a second filter screen, and the second filter screen is positioned between the blowdown flash tank and the second high-temperature water supply pump.

8. The drain recovery system according to claim 1, wherein: a sewage drain well for storing sewage is arranged between the sewage drain expanding container and the first conveying component, a third filter screen is arranged at the water inlet end of the first conveying component, and the third filter screen is positioned in the sewage drain well.

9. The drain recovery system according to claim 8, wherein: the sewage well is internally provided with a high water level detection point, a normal water level detection point and a low water level detection point which are sequentially arranged along the height direction.

10. The drain recovery system according to claim 8, wherein: the sewage draining and expanding device comprises a regular draining and expanding device and a hydrophobic and expanding device, wherein the water outlet end of the regular draining and expanding device is communicated with the sewage draining well, and the water outlet end of the hydrophobic and expanding device is communicated with the sewage draining well.