CN215594287U - Circulating water blowdown reinjection device of thermal power plant - Google Patents
Circulating water blowdown reinjection device of thermal power plant Download PDFInfo
- Publication number
- CN215594287U CN215594287U CN202121234659.5U CN202121234659U CN215594287U CN 215594287 U CN215594287 U CN 215594287U CN 202121234659 U CN202121234659 U CN 202121234659U CN 215594287 U CN215594287 U CN 215594287U
- Authority
- CN
- China
- Prior art keywords
- reinjection
- water
- well
- pipe network
- power plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/406—Aquifer recharge
Landscapes
- Sewage (AREA)
Abstract
The utility model discloses a device for reinjecting circulating water and sewage of a thermal power plant, wherein a reinjection water pump suction pool (1) is arranged in the power plant, a water injection pump (2) is arranged in the top of the water injection pump water pumping pool (1), the outlet of the reinjection water pump (2) is connected with one end of a reinjection pipe network (5), a reinjection main pipe flowmeter (3) and a reinjection main pipe maintenance valve (4) are arranged between the reinjection water pump (2) and the reinjection pipe network (5), the flow meter (3) of the reinjection main pipe and the maintenance valve (4) of the reinjection main pipe are arranged on the reinjection pipe network (5), the other end of the reinjection pipe network (5) is connected with a plurality of reinjection wells (9), the defect that the influence of underground water taking on underground water is not fully considered in the prior art is overcome, and the reinjection pipe network has the advantages of greatly reducing the consumption of underground water resources and reducing the investment and operating cost of advanced treatment of a power plant.
Description
Technical Field
The utility model relates to the technical field of sewage discharge, in particular to a circulating water sewage reinjection device for a thermal power plant.
Background
Water resources in China are increasingly deficient, and particularly in northern areas, coal mine drainage water is adopted as a water source by many power plants, or underground water is directly used as the water source of the power plants.
The water consumption and the discharge capacity of the power plant are large, and particularly, the power plant which utilizes underground water as a water source can cause irreversible influence on the ecology of the underground water in the stratum by pumping the underground water for a long time.
According to different underground water qualities, the discharge capacity of circulating water in a power plant is from dozens of tons per hour to hundreds of tons per hour.
In the current stage, two modes are generally adopted for discharging the circulating water, wherein the first mode is that the circulating water is directly discharged into surface water storage areas such as rivers, lakes and the like; secondly, after being treated, the waste water is continuously sent to a power plant for recycling, and the recycling direction mainly comprises that:
on one hand, the water is sent to places with low water quality requirements, such as power plants for washing, dust suppression and the like after primary treatment. On the other hand, the water is used as raw water after advanced treatment.
The first mode can cause waste of water resources, particularly has great influence on underground water, the underground water is taken and discharged to the ground surface, and the shortage of the underground water is increasingly prominent;
in the second mode, the washing and dust suppression recycling requirements after primary treatment are usually small, a large amount of water is excessively washed and sprayed, so that much waste is generated and recycling is less. On the other hand, the recycling after the advanced treatment needs larger initial investment, equipment related to the advanced treatment is equipped, and meanwhile, the later-stage operation control is complex and the cost is higher. The two modes are considered from the perspective of a power plant, how to simultaneously consider economy and environmental protection, but the influence of underground water taking on underground water is not fully considered.
Therefore, there is a high necessity for a device to solve the above problems.
Disclosure of Invention
The utility model aims to overcome the defects of the background technology and provides a circulating water sewage reinjection device for a thermal power plant.
The purpose of the utility model is implemented by the following technical scheme: a thermal power plant circulating water blowdown water reinjection device comprises a reinjection water pump suction pool, a reinjection water pump, a reinjection main pipe flowmeter, a reinjection main pipe maintenance valve, a reinjection pipe network, a reinjection well maintenance valve, a reinjection well flow regulating valve, a reinjection well flowmeter, a reinjection well, an exhaust valve and a liquid level meter;
the reinjection water pump suction pool is arranged in a power plant, the reinjection water pump is arranged in the top of the reinjection water pump suction pool, the outlet of the reinjection water pump is connected with one end of a reinjection pipe network, a reinjection main pipe flow meter and a reinjection main pipe maintenance valve are arranged between the reinjection water pump and the reinjection pipe network, the reinjection main pipe flow meter and the reinjection main pipe maintenance valve are arranged on the reinjection pipe network,
the other end of the reinjection pipe network is connected with a plurality of reinjection wells,
the front end of each reinjection well is provided with an instrument well, a reinjection well maintenance valve, a reinjection well flow regulating valve and a reinjection well flowmeter are arranged in the instrument well, the reinjection well maintenance valve, the reinjection well flow regulating valve and the reinjection well flowmeter are sequentially arranged on a reinjection pipe network from top to bottom,
every the top of reinjection well be provided with discharge valve, discharge valve install reinjection pipe network end, the inside level gauge that is provided with of reinjection well.
In the above technical scheme: and each reinjection well is internally provided with a water seepage pit.
In the above technical scheme: the reinjection pipe network extends into the reinjection well, and the tail end of a pipeline of the reinjection pipe network is positioned below the water level of the reinjection well.
The utility model has the following advantages:
1. the first method adopted for the circulating water sewage discharge at the present stage is to directly discharge the sewage into surface water storage areas such as rivers, lakes and the like, so that a great deal of waste is caused;
the utility model completely treats and recycles the circulating water and sewage of the power plant to the water pumping pool of the reinjection water pump, and then the circulating water and sewage are conveyed to the reinjection well through the reinjection water pump and injected into the underground aquifer, so that the underground water is continuously supplemented, and the consumption of underground water resources can be greatly reduced.
2. Aiming at the second mode adopted by circulating water sewage at the present stage, the sewage is used as raw water and other places with high water quality requirements after advanced treatment; when the power plant needs to recycle the circulating water and discharge sewage, as the requirement on water quality is higher, a large-scale water treatment system needs to be invested and built for advanced treatment, the one-time investment is increased, and meanwhile, the power consumption of the operation of the water treatment system and the related cost of the consumables of related equipment are higher.
Because the requirements on water quality are different, the requirements on sewage treatment of the utility model are not used as the water for power generation process, but only used for supplementing underground water;
the utility model directly discharges the treated sewage into the reinjection well through the reinjection pipe network without deep treatment, and has lower investment and operation cost compared with the water treatment of a power plant.
3. The utility model is full-automatic operation; circulating water and sewage produced by the power plant are treated in a centralized way and then discharged to a water recycling pump suction pool in the power plant, the water recycling pump is interlocked with the liquid level in the water pool, the pump is automatically started at a high water level, and the pump is automatically stopped at a low water level; circulating water blowdown water is delivered to each reinjection well through a reinjection water pump, and each reinjection well is provided with a flowmeter and a liquid level meter, and the liquid level in the reinjection well and the flow data of a single reinjection well are transmitted to a power plant centralized control room.
When the liquid level value in the well exceeds a certain numerical value, the situation that the reinjection well is seriously blocked is predicted, the well needs to be cleaned, the system can automatically close the water inlet valve of the reinjection well at the moment, and simultaneously open the water inlet valve of the standby well to start the standby well, so that the full-automatic operation is realized.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a detailed region layout diagram of the present invention.
In the figure: the device comprises a reinjection water pump suction pool 1, a reinjection water pump 2, a reinjection main pipe flowmeter 3, a reinjection main pipe maintenance valve 4, a reinjection pipe network 5, a reinjection well maintenance valve 6, a reinjection well flow regulating valve 7, a reinjection well flowmeter 8, a reinjection well 9, an exhaust valve 10, a liquid level meter 11, an instrument well 12 and a water seepage pit 13.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, but they are not to be construed as limiting the utility model, and are merely illustrative, and the advantages of the utility model will be more clearly understood and appreciated by those skilled in the art.
Referring to FIGS. 1-2: a thermal power plant circulating water blowdown water reinjection device comprises a reinjection water pump suction pool 1, a reinjection water pump 2, a reinjection main pipe flowmeter 3, a reinjection main pipe maintenance valve 4, a reinjection pipe network 5, a reinjection well maintenance valve 6, a reinjection well flow regulating valve 7, a reinjection well flowmeter 8, a reinjection well 9, an exhaust valve 10 and a liquid level meter 11;
the reinjection water pump suction pool 1 is arranged in a power plant, a reinjection water pump 2 is arranged in the top of the reinjection water pump suction pool 1, an outlet of the reinjection water pump 2 is connected with one end of a reinjection pipe network 5, a reinjection main pipe flowmeter 3 and a reinjection main pipe maintenance valve 4 are arranged between the reinjection water pump 2 and the reinjection pipe network 5, the reinjection main pipe flowmeter 3 and the reinjection main pipe maintenance valve 4 are arranged on the reinjection pipe network 5,
the other end of the reinjection pipe network 5 is connected with a plurality of reinjection wells 9,
an instrument well 12 is arranged at the front end of each reinjection well 9, a reinjection well maintenance valve 6, a reinjection well flow regulating valve 7 and a reinjection well flowmeter 8 are arranged in the instrument well 12, the reinjection well maintenance valve 6, the reinjection well flow regulating valve 7 and the reinjection well flowmeter 8 are sequentially arranged on a reinjection pipe network 5 from top to bottom,
every the top of reinjection well 9 be provided with discharge valve 10, discharge valve 10 install reinjection pipe network 5 terminal, reinjection well 9 inside be provided with level gauge 11.
A water seepage pit 13 is arranged in each reinjection well 9; the reinjection pipe network 5 extends into the reinjection well 9, and the tail end of a pipeline of the reinjection pipe network 5 is positioned below the water level of the reinjection well 9.
The existing device directly extracts surface water, utilizes the existing sewage or directly extracts underground water, and the existing device can cause irreversible state to the underground water for a long time.
Although the utility model uses the underground water, after the underground water is extracted, the utility model adopts some simple treatment processes to meet the requirement of reinjection into the underground, can continuously replenish the underground water and does not cause irreversible defects.
The utility model comprises the following specific working procedures: a plurality of the reinjection water pumps 2 are arranged in the reinjection water pump water suction pool 1;
the reinjection water pump 2 automatically starts the pump to suck water after the liquid level of the water tank reaches a certain height, a reinjection main pipe flowmeter 3 and a reinjection main pipe maintenance valve 4 are installed on a water outlet main pipe of the water pump, and the reinjection main pipe flowmeter 3 transmits the flow data model to a central control room to monitor the total reinjection water quantity in real time. The water flow enters the reinjection well area through the reinjection pipe network 5, and the number of the reinjection wells 9 can be multiple.
As shown in fig. 2, an instrumentation well 12 is disposed at the front end of each reinjection well 9, and a reinjection well service valve 6, a reinjection well flow regulating valve 7 and a reinjection well flow meter 8 are sequentially installed in the water flow direction. An exhaust valve 10 is installed at the mouth of the reinjection well 9, and the reinjection pipe network 5 extends into the tail end of the pipeline of the reinjection well 9 and is positioned below the water level. A liquid level meter 11 is installed in the reinjection well 9. The flow meter 8 of the reinjection well and the liquid level meter 11 transmit the flow signal and the liquid level signal back to the centralized control room of the power plant through optical fibers for real-time monitoring.
When the liquid level of the reinjection well 9 rises to the design limit value, the reinjection well flow regulating valve 7 can be remotely controlled to regulate the reinjection flow until the liquid level and the flow of the reinjection well 9 reach stable balance.
The above-mentioned parts not described in detail are prior art.
Claims (3)
1. The utility model provides a thermal power plant's circulating water blowdown reinjection device which characterized in that: the device comprises a reinjection water pump suction pool (1), a reinjection water pump (2), a reinjection main pipe flowmeter (3), a reinjection main pipe maintenance valve (4), a reinjection pipe network (5), a reinjection well maintenance valve (6), a reinjection well flow regulating valve (7), a reinjection well flowmeter (8), a reinjection well (9), an exhaust valve (10) and a liquid level meter (11);
the reinjection water pump is characterized in that a water pumping pool (1) is arranged in a power plant, a reinjection water pump (2) is installed in the top of the water pumping pool (1) of the reinjection water pump, an outlet of the reinjection water pump (2) is connected with one end of a reinjection pipe network (5), a reinjection main pipe flowmeter (3) and a reinjection main pipe maintenance valve (4) are arranged between the reinjection water pump (2) and the reinjection pipe network (5), the reinjection main pipe flowmeter (3) and the reinjection main pipe maintenance valve (4) are installed on the reinjection pipe network (5),
the other end of the reinjection pipe network (5) is connected with a plurality of reinjection wells (9),
an instrument well (12) is arranged at the front end of each reinjection well (9), a reinjection well maintenance valve (6), a reinjection well flow regulating valve (7) and a reinjection well flowmeter (8) are installed in the instrument well (12), the reinjection well maintenance valve (6), the reinjection well flow regulating valve (7) and the reinjection well flowmeter (8) are sequentially installed on a reinjection pipe network (5) from top to bottom,
every the top of reinjection well (9) be provided with discharge valve (10), discharge valve (10) install reinjection pipe network (5) terminal, reinjection well (9) inside be provided with level gauge (11).
2. The thermal power plant circulating water blowdown water reinjection device of claim 1, characterized in that: and a water seepage pit (13) is arranged in each reinjection well (9).
3. The thermal power plant circulating water blowdown water reinjection device of claim 1 or 2, characterized in that: the reinjection pipe network (5) extends into the reinjection well (9), and the tail end of a pipeline of the reinjection pipe network (5) is positioned below the water level of the reinjection well (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121234659.5U CN215594287U (en) | 2021-06-03 | 2021-06-03 | Circulating water blowdown reinjection device of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121234659.5U CN215594287U (en) | 2021-06-03 | 2021-06-03 | Circulating water blowdown reinjection device of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215594287U true CN215594287U (en) | 2022-01-21 |
Family
ID=79874342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121234659.5U Active CN215594287U (en) | 2021-06-03 | 2021-06-03 | Circulating water blowdown reinjection device of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215594287U (en) |
-
2021
- 2021-06-03 CN CN202121234659.5U patent/CN215594287U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111305314A (en) | Sewage direct recycling system for power plant circulating water and control method thereof | |
| CN207363651U (en) | A kind of system of full-automatic reinjected water or additive | |
| CN207271050U (en) | A kind of energy-saving type wet method desulfurated plaster serum recycle system | |
| CN215594287U (en) | Circulating water blowdown reinjection device of thermal power plant | |
| CN206174035U (en) | Water circulating system of thermal power plant | |
| CN209974436U (en) | Water-saving emission-reducing system | |
| CN107152270B (en) | Full-automatic reinjection water (additive) system and application method thereof | |
| CN212375944U (en) | Sewage direct recycling system of power plant circulating water | |
| CN210856026U (en) | Coal water slurry comprehensive utilization system | |
| CN204806758U (en) | Circulative cooling water supply system outside hydroelectric power plant | |
| CN213926653U (en) | Secondary sewage lifting device | |
| CN213868035U (en) | Main shaft seal water supply system of underground plant water power station | |
| CN211420084U (en) | Deep processing device for tar in residual ammonia water in coking production | |
| CN210559602U (en) | Physical automatic defoaming system of nitrification tank | |
| CN206075159U (en) | A kind of coal gasification dreg-locking hopper water-supply apparatus | |
| CN113418201A (en) | Coal burning system | |
| CN206458583U (en) | One kind linkage startup-shutdown control device | |
| CN207454022U (en) | A kind of underground coal mine water pump without bottom valve drainage system | |
| CN206199002U (en) | A kind of desulfuration absorbing tower serum recycle system | |
| CN205746790U (en) | A kind of energy-saving transformer substation boiler water filling device | |
| CN209620182U (en) | A kind of intelligence connection box supply equipment of frequency conversion with automatic cleaning function | |
| CN111155498A (en) | Sand blowing and dredging system and method for top cover of water turbine | |
| CN105754617B (en) | A kind of energy saving and environment friendly quenching water tower | |
| CN219510613U (en) | Unmanned synchronous turning device for gas well wellhead | |
| CN205383586U (en) | Boiler blow -out system arranges device that wastewater recovery utilized |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |