CN220768239U - System for improving raw water supply reliability of thermal power plant - Google Patents
System for improving raw water supply reliability of thermal power plant Download PDFInfo
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- CN220768239U CN220768239U CN202322139523.1U CN202322139523U CN220768239U CN 220768239 U CN220768239 U CN 220768239U CN 202322139523 U CN202322139523 U CN 202322139523U CN 220768239 U CN220768239 U CN 220768239U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 214
- 238000000746 purification Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a system for improving raw water supply reliability of a thermal power plant, which comprises: a raw water tank and a lifting pump; the raw water tank is provided with a raw water tank inlet and a water outlet, the raw water tank inlet is connected with an external water supply pipeline, the lifting pump is provided with a lifting pump inlet and a lifting pump outlet, the water outlet is connected to the lifting pump inlet, and the water outlet is connected to the water purifying station through the lifting pump outlet. The water for production of the power plant can be ensured when emergency or other unexpected situations are met, and safe operation is ensured.
Description
Technical Field
The utility model relates to the technical field of water supply, in particular to a system for improving raw water supply reliability of a thermal power plant.
Background
The statements in this section merely relate to the background of the present disclosure and may not necessarily constitute prior art.
The wet cooling unit of the thermal power plant is a large water consumer, faces huge water consumption, and is particularly important for the heat supply unit in terms of water supply reliability.
Generally, 1 emergency standby water supply pipeline is additionally arranged on a power plant water supply pipeline network to ensure the water supply reliability. However, when external conditions do not allow the addition of an emergency backup water supply line, the raw water supply of the power plant is a single-pass water supply, and when external emergency occurs, the power plant is forced to stop running when the power plant water supply is interrupted. For a pure condensing unit, impact is caused to a power grid; for heating units, there is also a loss of production from the heat consumer. Therefore, when the power plant is limited by external conditions and only single-path water supply is adopted, the reliability of raw water supply cannot be ensured.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a system for improving the raw water supply reliability of a thermal power plant, which can ensure the production water of the power plant and ensure the safe operation when the power plant can only adopt a single-way water supply pipeline and encounters emergency or other unexpected situations.
A system for improving raw water supply reliability of a thermal power plant, comprising: a raw water tank and a lifting pump;
the raw water tank is provided with a raw water tank inlet and a water outlet, the raw water tank inlet is connected with an external water supply pipeline, the lifting pump is provided with a lifting pump inlet and a lifting pump outlet, the water outlet is connected to the lifting pump inlet, and the water outlet is connected to the water purifying station through the lifting pump outlet.
Further, the raw water Chi Rukou is connected with an external water supply pipeline through a plurality of water pipes, and each pipeline is provided with an electric butterfly valve and a manual butterfly valve.
Further, raw water Chi Rukou is connected with an external water supply pipeline through a plurality of water pipes, each pipeline is provided with a first electric butterfly valve and a first manual butterfly valve, when the first electric butterfly valve is used for receiving a shutdown control instruction, the first manual butterfly valve is a normally open valve, and when the first electric butterfly valve needs to be overhauled, the corresponding first manual butterfly valve is closed.
Further, the water outlet is connected with the raw water tank and the water purifying station through the lifting pump and the pipeline, each lifting pump outlet is provided with a second manual butterfly valve, and when the lifting pump fails, the corresponding second manual butterfly valve is closed for maintenance.
Further, the raw water pool is also provided with an overflow port, and the overflow port is connected with an off-plant municipal drainage ditch.
Further, the lift pump outlet is connected to the water purification station through a raw water pipe, a second electric butterfly valve and a flowmeter are arranged on the raw water pipe, the second electric butterfly valve is automatically closed when being used for receiving a pipeline control instruction corresponding to maintenance, and the flowmeter is used for measuring raw water flow entering the water purification station.
Further, a turbidity meter is further arranged on the raw water pipe and used for detecting the turbidity of raw water.
Further, a filter screen is arranged at the initial section of the water outlet in the raw water pool and is used for preliminarily filtering raw water impurities in the raw water pool.
Further, the system also comprises a water level alarm module, wherein a water level gauge is arranged in the raw water tank and is used for acquiring and transmitting water level information of the raw water tank to the water level alarm module, and when the water level of the raw water tank is lower than a set low water level alarm threshold value or when the water level of the raw water tank is higher than the set low water level alarm threshold value, the water level alarm module gives an alarm.
Further, the top of the raw water tank is higher than the ground.
Further, a runway and a greening landscape can be arranged at the top of the raw water pool.
Compared with the prior art, the utility model has the beneficial effects that:
first, compared with the original system, the original water tank is added, when water can not normally come outside the plant, water can be normally supplied to the power plant by starting the water storage in the original water tank, and particularly for a heat supply unit, the water supply guarantee rate can be improved, and the safety of the unit is ensured.
Secondly, the raw water pool outlet is provided with a lifting pump, so that the pressure of raw water can be increased, and the pressure requirement of an inlet of a water purifying station of a power plant is met.
Thirdly, the system is simple in design, and compared with the original scheme, the water tank and the raw water lifting pump are only added, so that the operation and the maintenance are convenient.
Fourth, the scheme has no special requirement on the appearance of the raw water pool, can be closely attached to the land in the red line of the land for the power plant, can be in an irregular appearance, and fully utilizes the land of the power plant.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a flow diagram of a conventional power plant system for supplying water to a single pipeline;
fig. 2 is a schematic diagram of a system configuration for improving raw water supply reliability of a thermal power plant according to one or more embodiments.
The device comprises a raw water tank (1), a raw water tank (101), raw water Chi Rukou, 102, a water outlet (103), an overflow port, a lifting pump (2), a lifting pump inlet (201), a lifting pump inlet (202), a lifting pump outlet (203), a raw water pipe (3), an external water supply pipeline (4), a first electric butterfly valve (5), a first manual butterfly valve (6), a second manual butterfly valve (7), a second electric butterfly valve (8), a flowmeter (9) and a turbidity meter.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It should be noted that, in terms of the individual devices involved in the present utility model, the specific structure for realizing the functions to be realized in each device is already existing in the prior art, and the protocols, software or programs involved in the working process between them are also already existing in the prior art, so those skilled in the art are well aware that the present utility model does not make any improvement on the individual devices, and therefore does not involve the content of the software, but rather relies on the organic integration and integration of the components into a whole, i.e. a structural scheme is provided.
As shown in fig. 1, the existing system flow of supplying water to a single pipeline in a power plant adopts the single pipeline, and has the following defects: the water used for production and the safe operation of the power plant cannot be ensured when emergency or other unexpected situations are met.
In order to solve the above problems, the present utility model provides a system for improving raw water supply reliability of a thermal power plant, comprising: a raw water tank 1 and a lift pump 2;
the raw water tank 1 is provided with a raw water tank inlet 101 and a water outlet 102, and the raw water tank inlet 101 is connected with an external water supply pipeline 3 and is used for receiving external water;
the lift pump 2 is provided with a lift pump inlet 201 and a lift pump outlet 202, the water outlet 102 being connected to the lift pump inlet 201 and to the water purification station via the lift pump outlet 202.
In this embodiment, the number of the water outlets 102 is set according to the number of the power plant units and the number of the lift pumps, for example, when two units are used, three outlets may be respectively connected to the raw water lift pump when the lift pumps are two-operation-one-standby. When the number of the units is four, three outlets can be added and respectively connected to the other three raw water lifting pumps; when the number of units is still to be increased, and so on.
It should be noted that, the shape of the raw water tank 1 can be reasonably planned according to the land red line of the power plant, and can be elliptical, square or other irregular shapes, which is not particularly limited in the embodiment, so as to fully utilize the land which has been characterized by the power plant.
It should be understood that the top of the raw water tank 1 is higher than the ground, for example, the top of the raw water tank may be set to be 0-2 m higher than the ground; the purpose of this arrangement is: if the local groundwater level is higher, the raw water pool can not excavate too deeply, and the volume requirement of the raw water pool can be met.
The top of the raw water pool 1 can be provided with a runway, a greening landscape and the like, so that the versatility of the raw water pool is improved;
further, a filter screen is arranged at the initial section of the water outlet 102 in the raw water tank, and is used for preliminarily filtering raw water impurities in the raw water tank.
Further, the raw water tank 1 is also provided with an overflow port 103; the overflow port 103 is connected with an off-site municipal drainage ditch; when an emergency situation occurs, the water level of the raw water pool is higher than the overflow water level, and the water can be drained to the municipal drainage ditch;
further, the raw water Chi Rukou 101 is connected to an off-plant water supply line via a plurality of water pipes, and each pipe is provided with a first electric butterfly valve 4 and a first manual butterfly valve 5. The first electric butterfly valve 4 is used for being closed automatically when receiving a remote shutdown control instruction and is isolated from the outside of the factory, the first manual butterfly valve is a normally open valve, and when the first electric butterfly valve needs to be overhauled, the corresponding first manual butterfly valve is closed.
Further, the water outlet 102 connects the raw water tank with the water purifying station through the lift pump 2 and the pipeline. Each lift pump outlet 202 is provided with a second manual butterfly valve 6, and when the lift pump fails, the corresponding second manual butterfly valve 6 can be closed for maintenance.
In this embodiment, the capacity of the lift pump may be selected according to actual situations. For example, 3x50% capacity can be selected for the lift pump for economic reasons, and the lift pump is transported to the first place; alternatively, a capacity of 2 x 100%, a transport capacity or other options may be used.
In this embodiment, the lift pump outlet 202 is connected to the water purification station through a raw water pipe 203, a second electric butterfly valve 7 and a flowmeter 8 are arranged on the raw water pipe, the electric butterfly valve is used for being automatically closed when corresponding pipeline control instructions are overhauled, isolation between a raw water tank and the water purification station is achieved, and the flowmeter 8 is used for measuring raw water flow entering the water purification station.
The raw water pipe 203 may be a 2×100% capacity pipe, may be 3×50% or other options, and may be set according to practical situations.
The raw water pipe 203 is further provided with a turbidity meter 9, which can detect the turbidity of the raw water according to the turbidity meter, and determine whether to perform dosing treatment on the raw water according to the value of the turbidity.
The water level meter is used for acquiring and remotely transmitting water level information of the raw water tank to the water level alarm module, the water level alarm module is connected to the power plant decentralized control system, and when the water level of the raw water tank is lower than a set low water level alarm threshold or when the water level of the raw water tank is higher than the set low water level alarm threshold, the water level alarm module gives an alarm, so that operators are reminded of closely paying attention to the water level. When the water level of the raw water tank is lower than the set pump stopping water level threshold, the water pump automatically stops running to ensure safety.
Wherein, the decentralized control system, english is interpreted as: distributed Control System, DCS, is an existing control system.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. A system for improving raw water supply reliability of a thermal power plant, comprising: a raw water tank and a lifting pump;
the raw water tank is provided with a raw water tank inlet and a water outlet, the raw water tank inlet is connected with an external water supply pipeline, the lifting pump is provided with a lifting pump inlet and a lifting pump outlet, the water outlet is connected to the lifting pump inlet, and the water outlet is connected to the water purifying station through the lifting pump outlet.
2. The system for improving raw water supply reliability of a thermal power plant according to claim 1, wherein raw water Chi Rukou is connected with an external water supply pipeline through a plurality of water pipes, each pipeline is provided with a first electric butterfly valve and a first manual butterfly valve, the first electric butterfly valve is automatically closed when receiving a shutdown control instruction, the first manual butterfly valve is a normally open valve, and the corresponding first manual butterfly valve is closed when the first electric butterfly valve needs to be overhauled.
3. The system for improving raw water supply reliability of a thermal power plant according to claim 1, wherein the water outlet connects the raw water tank with the water purifying station through a lift pump and a pipeline, each lift pump outlet is provided with a second manual butterfly valve, and when the lift pump fails, the corresponding second manual butterfly valve is closed for maintenance.
4. The system for improving raw water supply reliability of a thermal power plant according to claim 1, wherein said raw water tank is further provided with an overflow port connected to an off-plant municipal drainage ditch.
5. The system for improving raw water supply reliability of a thermal power plant according to claim 1, wherein the outlet of the lifting pump is connected to the water purification station through a raw water pipe, a second electric butterfly valve and a flowmeter are arranged on the raw water pipe, the second electric butterfly valve is used for being automatically closed when receiving a pipeline control instruction corresponding to maintenance, and the flowmeter is used for measuring raw water flow entering the water purification station.
6. The system for improving raw water supply reliability of a thermal power plant according to claim 5, wherein a turbidity meter for detecting turbidity of raw water is further provided on the raw water pipe.
7. The system for improving raw water supply reliability of a thermal power plant according to claim 1, wherein a water outlet starting section in the raw water tank is provided with a filter screen for preliminarily filtering raw water impurities in the raw water tank.
8. The system for improving raw water supply reliability of a thermal power plant according to claim 1, further comprising a water level alarm module, wherein a water level gauge is arranged in the raw water tank, the water level gauge is used for acquiring and transmitting water level information of the raw water tank to the water level alarm module, and the water level alarm module gives an alarm when the water level of the raw water tank is lower than a set low water level alarm threshold or when the water level of the raw water tank is higher than the set low water level alarm threshold.
9. A system for improving raw water supply reliability of a thermal power plant according to claim 1, wherein the top of said raw water tank is raised above the ground.
10. The system for improving raw water supply reliability of a thermal power plant according to claim 1, wherein a runway and a greening landscape can be arranged on the top of the raw water pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322139523.1U CN220768239U (en) | 2023-08-09 | 2023-08-09 | System for improving raw water supply reliability of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322139523.1U CN220768239U (en) | 2023-08-09 | 2023-08-09 | System for improving raw water supply reliability of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220768239U true CN220768239U (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322139523.1U Active CN220768239U (en) | 2023-08-09 | 2023-08-09 | System for improving raw water supply reliability of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220768239U (en) |
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2023
- 2023-08-09 CN CN202322139523.1U patent/CN220768239U/en active Active
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