CN218115035U - Power plant water circulation system - Google Patents
Power plant water circulation system Download PDFInfo
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- CN218115035U CN218115035U CN202220883786.6U CN202220883786U CN218115035U CN 218115035 U CN218115035 U CN 218115035U CN 202220883786 U CN202220883786 U CN 202220883786U CN 218115035 U CN218115035 U CN 218115035U
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Abstract
The utility model belongs to the technical field of the water treatment technique and specifically relates to a power plant's water circulating system is related to. The power plant water circulation system comprises an open water system and an industrial water system; the circulating water main pipe of the open water system is communicated with an industrial water ring network of the industrial water system through a drainage pipeline; and a water supply device of the industrial water system is communicated with a tower pond of the open water system. Part of water in the open water system is discharged into the industrial water system through a drainage pipeline, and a water supply device of the industrial water system replenishes the open water system. The method can ensure the qualified quality of the open circulating water for a long time, and can reduce or eliminate the addition of chemicals or recycle the waste water when the open water needs to be changed, thereby greatly improving the economical efficiency of the thermal power plant. Meanwhile, the open water has the same pressure as the industrial water, and the phenomenon of insufficient pressure does not exist.
Description
Technical Field
The utility model belongs to the technical field of the water treatment technique and specifically relates to a water circulating system of power plant is related to.
Background
At present, large-scale domestic thermal power plants are all provided with open circulating water systems which are used for cooling closed water, main engine lubricating oil and vacuum pump working cooling water; the industrial water is mainly used for desulfurization process water, water supplement of a ventilation cooling tower, urea dissolving pump cooling water, urea conveying pump cooling water, slag bin stirring water, a unit vacuum pump standby cooling water source (cooling in summer) and machine room sewage discharge mixing water, the consumption of the industrial water during single machine operation is 1200T/day, and the consumption of the industrial water during double machines operation is 2500T/day. The open water is recycled through the ventilation cooling tower, and the air blowing loss is supplied by industrial water. Because the open water is recycled for a long time and is contacted with the air, the water quality is unqualified for a long time, and simultaneously, microorganisms are generated, so that a large amount of industrial water is needed to replace the open water, and meanwhile, the slow-release scale inhibitor is added to prevent the generation of the microorganisms.
Adopt open water, industrial water's power plant, when open water quality of water is unqualified and need trade water, trade water with the bottom drainage, perhaps overflow trades water and will cause a large amount of water to pass through the pipeline and discharge into industrial wastewater disposal basin, and industrial wastewater disposal basin is through cyclic utilization after relevant equipment is handled waste water. The dosage and the power consumption generated by treating the wastewater are not small losses of a thermal power plant.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a power plant water circulation system which can solve the problem of high cost of wastewater treatment;
the utility model provides a power plant water circulation system, which comprises an open water system and an industrial water system;
the circulating water main pipe of the open water system is communicated with an industrial water ring network of the industrial water system through a drainage pipeline;
and a water supply device of the industrial water system is communicated with a tower pond of the open water system.
Preferably, the open water system comprises a unit and a circulating water filter screen;
the unit is communicated with the circulating water filter screen through a circulating water main pipe.
Preferably, the industrial water ring network is an annular water supply main pipe;
one section of the annular water supply main pipe is a water supply pipe, and the other end of the annular water supply main pipe is connected with a plurality of users;
the first end of the water supply pipe is communicated with the drainage pipeline, and the second end of the water supply pipe is provided with a first valve;
the water supply pipe is also provided with a second valve and a third valve at intervals;
the tower pool is communicated with a pipeline between the second valve and the third valve through a pipeline;
the water supply device is communicated with a pipeline between the first valve and the second valve through a pipeline.
Preferably, the drainage pipeline is provided with a communication door.
Preferably, the communication gate is two valves arranged in series.
Preferably, the valves on the first valve and the communication door are manual doors.
Preferably, the water supply device comprises an industrial water pool and an industrial water pump connected with the industrial water pool.
Preferably, the open water system comprises a ventilation cooling tower, a front pool and an open water pump;
the tower pool, the ventilation cooling tower, the forebay and the open water pump are communicated in sequence.
Preferably, the users of the industrial water system comprise machine room open water users, a slag bin, a urea hydrolysis vehicle inspection device, a rainwater pump room, a coal pushing machine room, coal yard spraying equipment, a wastewater treatment workshop, a desulfurization industrial water tank and an ash silo.
Has the beneficial effects that:
and part of water in the open water system is drained into the industrial water system through a drainage pipeline, and a water supply device of the industrial water system only supplies water to a tower pond of the open water system. The method can ensure the qualified quality of the open circulating water for a long time, and can reduce or eliminate the addition of chemicals or recycle the waste water when the open water needs to be changed, thereby greatly improving the economical efficiency of the thermal power plant. Meanwhile, the pressure of the open water is the same as that of the industrial water, and the phenomenon of insufficient pressure does not exist.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a power plant water circulation system provided in an embodiment of the present invention;
description of reference numerals:
1: a drain line; 2: a circulating water filter screen; 3: a first valve; 4: a second valve; 5: a third valve; 6: a contact gate;
in the figure, the arrow directions are water flow directions which are respectively:
a1: removing a rainwater pump room; a2: a coal pushing machine room; a3: removing the coal yard for spraying; a4: moving to a urea hydrolysis workshop; a5: removing a #2 slag bin; a6: removing No. 2 furnace dredging, expanding, draining, mixing water; a7: removing #1 furnace dredging drainage mixing water; a8: removing a #1 slag bin; a9: removing ash from a warehouse; a10: removing the desulfurization industrial water tank; a11: an open water user in a steam removal machine room; a12: a coal water removal treatment plant; a13: to a #1 machine; a14: to water supply industrial waste water pipelines; a15: to a #2 machine; a16: a chemical neutralization pond; a17: and (4) removing a heat supply network circulating pump room.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
As shown in fig. 1, in the present embodiment, there is provided a power plant water circulation system including an open water system and an industrial water system.
The circulating water main pipe of the open water system is communicated with an industrial water ring network of the industrial water system through a drainage pipeline 1.
The water supply device of the industrial water system is communicated with the tower tank of the open water system.
In the present embodiment, part of the water in the open water system is drained into the industrial water system through the drainage line 1, and the water supply device of the industrial water system supplies only the makeup water to the tower sump of the open water system. The open circulating water quality can be ensured to be qualified for a long time, and chemicals are added or not added, or the waste water is recycled when the open water needs to be changed, so that the economical efficiency of a thermal power plant is greatly improved. Meanwhile, the pressure of the open water is the same as that of the industrial water, and the phenomenon of insufficient pressure does not exist.
The open water system comprises a unit and a circulating water filter screen 2, and the unit is communicated with the circulating water filter screen 2 through a circulating water main pipe.
That is to say, the water in the open water system is filtered and then enters the industrial water system, so that the impurities can be prevented from entering the industrial water system.
The connection mode of the drainage pipeline 1 and the industrial water ring net is as follows:
the industrial water ring network is an annular water supply main pipe.
One section of the annular water supply main pipe is a water supply pipe, and the other end of the annular water supply main pipe is connected with a plurality of users.
The first end of the water supply pipe is communicated with the drainage pipeline 1, and the second end of the water supply pipe is provided with a first valve 3.
The water supply pipe is also provided with a second valve 4 and a third valve 5 at intervals, and the tower pool is communicated with a pipeline between the second valve 4 and the third valve 5 through a pipeline.
The water supply device is communicated with a pipeline between the first valve 3 and the second valve 4 through a pipeline.
The drainage pipeline 1 is provided with a communication door 6. Specifically, the communication gate 6 is two valves arranged in series.
The valves on the first valve 3 and the communication door 6 are manual doors.
Through the control to above-mentioned valve, the water circulating system of power plant has two kinds of operational modes:
the first operation mode is as follows: and (3) opening the connecting door 6 and the second valve 4, closing the first valve 3 and the third valve 5, and opening the first valve 3 and the third valve 5 and closing the connecting door 6 after water changing is finished. Wherein the second valve 4 is a trench well door, which is a normally open door.
The water is changed only when the water quality of the tower pool is unqualified, the unqualified water enters the industrial water pipe through the water discharge pipeline 1 to be supplied to other users, and the waste water is recycled while the industrial water supplements the waste open water, so that the water quality of the open circulating water is quickly qualified.
The second operation mode is as follows: the communication door 6 and the second valve 4 are opened, the first valve 3 and the third valve 5 are closed, industrial water is supplied to the tower pool of the ventilating and cooling tower all the time, other users of the industrial water are separated from the water supply of the tower pool and are supplied by a newly-added pipeline, so that open water is changed into running water, the open water is guaranteed to be qualified all the time, simultaneously, microorganisms generated by the running water are few, no or few chemicals can be added, the industrial water is directly supplied to the tower pool of the ventilating and cooling tower in summer, the temperature of the open water can be reduced by about 5 ℃, the running of a vacuum pump is facilitated, and the vacuum of a unit is indirectly improved. The quality of the open water is qualified for a long time, and the safety of the connected users is ensured. The operating personnel can monitor the water level of the tower pool to achieve the balance for compensation, which can achieve multiple purposes.
The water supply device comprises an industrial water pool and an industrial water pump connected with the industrial water pool.
The open water system comprises a ventilation cooling tower, a forebay and an open water pump, wherein the tower bay, the ventilation cooling tower, the forebay and the open water pump are communicated in sequence.
The users of the industrial water system comprise machine room open type water users, a slag bin, a urea hydrolysis car inspection device, a rainwater pump room, a coal pushing machine room, coal yard spraying equipment, a wastewater treatment workshop, a desulfurization industrial water tank and an ash silo.
Above-mentioned water supply installation, open water system and industrial water system are prior art commonly used, and except above-mentioned structure, water supply installation, open water system and industrial water system still include structures such as valve, need explain that, this application does not improve above-mentioned structure, and the main utility model of this application is that the basis of above-mentioned structure has increased drain line 1, contact door 6 and first valve 3.
In conclusion, the power plant water circulation system provided by the embodiment has the following advantages:
1. through the transformation, if the power plant adopts the second operation mode, the mode can thoroughly solve the problems of unqualified water quality of open water and large dosage and greatly reduce the operation cost of the unit.
2. Through the transformation, other users of open water direct supply industrial water, the industrial water direct supply tower pond, the open water temperature is reduced by about 5 ℃ in summer, the vacuum is effectively improved, and the load capacity of the unit is improved.
3. The investment of the transformation project is less than 10000 yuan, and the obtained economic benefit cannot be measured.
4. The quality of the open water is qualified for a long time, the corrosion of the connected user equipment is ensured to be small, and the safety of the unit is improved.
5. The method does not influence the original use of the industrial water, can be flexibly switched and has simple system.
6. After the project is transformed, the tower pool does not need to be changed with water, and is qualified for a long time; open water recycling is changed into partial recycling, microorganisms can hardly survive, dosing is basically not needed, raw water is saved, and dosing cost is saved. The water change of the tower pool is calculated according to 1000T every time, the water change is carried out for 5 times all the year, the water change cost for each time is 1000 x 5 (each ton of water is calculated according to 5 yuan) 5000 yuan, and the water change cost for each year is 2.5 ten thousand; the charge of the medicine used for treating 5000T wastewater is roughly estimated to be 10 ten thousand yuan, 50 ten thousand yuan is added into a tower pool all the year around, and the operating cost is saved by 62.5 ten thousand yuan all the year around after the project is implemented.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A power plant water circulation system is characterized by comprising an open water system and an industrial water system;
the circulating water main pipe of the open water system is communicated with an industrial water ring network of the industrial water system through a drainage pipeline;
and the water supply device of the industrial water system is communicated with the tower tank of the open water system.
2. A power plant water circulation system according to claim 1, wherein the open water system comprises a unit and a circulating water screen;
the unit is communicated with the circulating water filter screen through a circulating water main pipe.
3. A power plant water circulation system according to claim 1, wherein the industrial water ring network is an annular water main;
one section of the annular water supply main pipe is a water supply pipe, and the other end of the annular water supply main pipe is connected with a plurality of users;
the first end of the water supply pipe is communicated with the drainage pipeline, and the second end of the water supply pipe is provided with a first valve;
the water supply pipe is also provided with a second valve and a third valve at intervals;
the tower pool is communicated with a pipeline between the second valve and the third valve through a pipeline;
the water supply device is communicated with a pipeline between the first valve and the second valve through a pipeline.
4. A power plant water circulation system according to claim 3, wherein a tie door is provided on the drain line.
5. A power plant water circulation system according to claim 4, wherein the tie-in gate is two valves arranged in series.
6. A power plant water circulation system according to claim 5, wherein the valves on the first valve and the communication door are manual doors.
7. A power plant water circulation system according to claim 1, wherein the water supply means comprises an industrial water basin, and an industrial water pump connected to the industrial water basin.
8. A power plant water circulation system according to claim 1, wherein the open water system comprises a ventilated cooling tower, a forebay and an open water pump;
the tower pool, the ventilation cooling tower, the forebay and the open water pump are communicated in sequence.
9. A power plant water circulation system according to claim 2, wherein the users of the industrial water system comprise machine room open water users, slag bins, urea hydrolysis car inspections, rainwater pump rooms, coal pusher rooms, coal yard spray equipment, wastewater treatment plants, desulfurization industrial water tanks and ash stores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883786.6U CN218115035U (en) | 2022-04-15 | 2022-04-15 | Power plant water circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883786.6U CN218115035U (en) | 2022-04-15 | 2022-04-15 | Power plant water circulation system |
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| Publication Number | Publication Date |
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| CN218115035U true CN218115035U (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220883786.6U Active CN218115035U (en) | 2022-04-15 | 2022-04-15 | Power plant water circulation system |
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| CN (1) | CN218115035U (en) |
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