CN217519985U - Cooling water circulating device of air conditioning system of underground powerhouse of hydropower station - Google Patents
Cooling water circulating device of air conditioning system of underground powerhouse of hydropower station Download PDFInfo
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- CN217519985U CN217519985U CN202221334611.6U CN202221334611U CN217519985U CN 217519985 U CN217519985 U CN 217519985U CN 202221334611 U CN202221334611 U CN 202221334611U CN 217519985 U CN217519985 U CN 217519985U
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Abstract
The utility model relates to a power station underground factory building air conditioning system's cooling water circulating device, the utility model discloses a cooling water circulating device has the heat exchanger and inserts the reservoir water circulation pipeline and the cooling water circulation pipeline of heat exchanger both sides, through indirect heat transfer mode, adjusts the cooling water supply temperature who gets into the cooling water set. The reservoir water circulation pipeline is an open circulation pipeline, and a reservoir water drainage pump which operates in a variable flow mode is arranged on the reservoir water circulation pipeline and is arranged on a tail water pressure pipeline near an equipment machine room. The cooling water circulation pipeline is closed circulation and is arranged in a cold water machine room in an underground plant. The reservoir water circulation pipeline and the cooling water circulation pipeline are provided with a temperature sensor and a flow sensor which are connected with a control terminal, the control terminal is used for calculating and analyzing, a reservoir water drainage pump is controlled to run in a variable flow mode, the heat exchange state of the cooling water circulation device is automatically adjusted, the cooling water supply temperature is adjusted, and energy-saving, efficient, safe and stable running of the air-conditioning cooling water system of the underground powerhouse of the hydropower station is guaranteed.
Description
Technical Field
The utility model relates to a power station underground factory building air conditioning system's cooling water circulating device is applicable to hydroelectric engineering's equipment technical field.
Background
The underground powerhouse of the hydropower station is generally buried in a mountain deeply, reservoir water of an upstream reservoir is guided to the hydroelectric generating set through a water guide pressure steel pipe, and water flow is discharged to a downstream reservoir through a set volute and a tail water pressure pipeline. Because the reservoir water has the characteristics of low natural temperature, small temperature fluctuation, large water source capacity and the like, the air-conditioning cooling water system of the underground workshop makes full use of the low-temperature reservoir water for cooling, the air-conditioning cooling water adopts large temperature difference and small flow to carry out high-efficiency operation, and the energy-saving effect is obvious. However, because the distribution of the hydropower station hub is limited, the underground powerhouse is far away from the water intake of the upstream reservoir and the water pressure of the pipe network is large, and a cooling water system does not have the condition of directly taking water from the upstream reservoir, generally takes water from the tail water pressure pipeline of the generator set near the underground powerhouse, exchanges heat through the condenser of the air-conditioning water chilling unit, and then discharges the water into the tail water pressure pipeline of the adjacent generator set section.
For a high-fall conventional hydropower station and a pumped storage hydropower station, the reservoir water pressure of a tail water pressure pipeline is larger, and particularly the water pressure of the pumped storage hydropower station even exceeds 1.5 Mpa. If the reservoir water is directly used for an air conditioner cooling water system, the conventional pressure bearing of cooling water equipment such as a condenser, a water treatment device, a water pump, a valve and the like of a water chiller unit is exceeded, higher requirements are inevitably put on the pressure bearing performance of the equipment, the manufacturing process of the equipment is promoted, the investment cost is increased, and the water leakage phenomenon is easy to occur when the pressure bearing of a cooling water system pipe network is high. Meanwhile, the reservoir water temperature in early summer and late autumn is too low, generally less than 15 ℃, so that the water supply temperature of the air-conditioning cooling water system is too low, the adjustability of the air-conditioning cooling water system is poor, the energy-saving and efficient operation of the air-conditioning cooling water system cannot be realized, even the normal operation of a water chilling unit is damaged, and the safety and stability of the air-conditioning cooling water system are influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the technical problem, the utility model provides a power station underground factory building air conditioning system's cooling water circulating device solves air conditioner cooling water equipment and pipe network bearing height, easily leaks and cool off water supply temperature and crosses low scheduling problem, realizes air conditioner cooling water system's energy-conserving high efficiency, safety and stability operation.
The utility model adopts the technical proposal that: the utility model provides a power station underground factory building air conditioning system's cooling water circulating device, arranges between power station generating set's tail water pressure pipeline and underground factory building air conditioning system's cooling water set, its characterized in that: comprising:
the heat exchanger is arranged between the tail water pressure pipeline and the water chilling unit and is used for realizing heat exchange between the reservoir water in the tail water pressure pipeline and the cooling water flowing through the water chilling unit;
the cooling water circulation pipeline is connected between one side of the heat exchanger and the water chilling unit and used for realizing closed circulation flow of low-pressure cooling water between the water chilling unit and the heat exchanger, and the cooling water circulation pump arranged on the cooling water circulation pipeline is used for controlling the flow of the cooling water in the cooling water circulation pipeline;
the reservoir water circulating pipeline is connected between the other side of the heat exchanger and the tail water pressure pipeline and is used for realizing open circulating flow of high-pressure reservoir water between the tail water pressure pipeline and the heat exchanger, and reservoir water in the reservoir water circulating pipeline is controlled to flow by a reservoir water drainage pump arranged on the reservoir water circulating pipeline;
a water intake temperature sensor and a water discharge temperature sensor are respectively arranged on a reservoir water circulating pipeline connected with a water inlet and a water outlet on the water side of the heat exchanger reservoir, a water supply temperature sensor and a water return temperature sensor are respectively arranged on a cooling water circulating pipeline connected with a water inlet and a water outlet on the cooling water side of the heat exchanger reservoir, a reservoir water flow sensor is arranged on the reservoir water circulating pipeline, and a cooling water flow sensor is arranged on the cooling water circulating pipeline;
and the control terminal is connected with the reservoir water flow sensor, the water taking temperature sensor, the drainage temperature sensor, the water supply temperature sensor, the return water temperature sensor, the cooling water flow sensor and the reservoir water drainage pump through a control circuit, and is used for receiving and processing information data monitored by the sensors and controlling and adjusting the running flow of the reservoir water drainage pump.
The running flow of the cooling water circulating pump is constant, and the flow of the cooling water flowing through the water chilling unit is constant, so that the stable running of the water chilling unit is facilitated.
In the reservoir water circulation pipeline, a water intake ball valve is arranged on a water intake pipe connected to a water inlet at the water side of the heat exchanger reservoir, and a water discharge ball valve is arranged on a water discharge pipe connected to a water outlet at the water side of the heat exchanger reservoir; in the cooling water circulation pipeline, a water supply pipe connected to a cooling water side water inlet of the heat exchanger is provided with a water supply ball valve, and a water return pipe connected to a cooling water side water outlet of the heat exchanger is provided with a water return ball valve.
And the cooling water circulating pipeline is provided with a cooling water processor for filtering and sterilizing the cooling water flowing into the water chilling unit.
The control terminal controls the reservoir water drainage pump to perform variable flow operation, changes the reservoir water flow entering the water side of the heat exchanger reservoir, and adjusts the heat exchange state of the cooling water circulating device to realize the adjustment of the cooling water supply temperature.
The utility model has the advantages that: the utility model discloses a cooling water circulating device has not only reduced cooling water system's cooling water set, the water treatment ware, cooling device's such as water pump and valve pressure-bearing requirement, the investment cost of equipment has been reduced, the phenomenon of leaking has easily taken place because of high pressure-bearing to have avoided cooling water system pipe network, the cooling water supply temperature of cooling water side has been adjusted again, the operating stability of cooling water set has been improved, cooling water system's energy-conserving high efficiency has been exerted, and cooling water system's nimble control has been realized, the safe and reliable operation of power station underground factory building air conditioner cooling water system has been ensured. The utility model has the characteristics of economy reasonable, safety and stability, nimble control, energy-conservation high efficiency etc.
Drawings
Fig. 1 is a schematic view of the structural principle of the device of this embodiment.
Fig. 2 is a schematic control principle diagram of the embodiment.
Wherein, 1, a water taking pressure pipeline; 2. a water intake ball valve; 3. taking a water pipe; 4. a reservoir water processor; 5. a reservoir water flow sensor; 6. a water intake temperature sensor; 7. a heat exchanger; 8. a drain temperature sensor; 9. a reservoir water draining pump; 10. a drain pipe; 11. a drain ball valve; 12. a drainage pressure conduit; 13. a backwater temperature sensor; 14. a cooling water flow sensor; 15. a return water ball valve; 16. a water return pipe; 17. a water chilling unit; 18. a water supply pipe; 19. a water supply ball valve; 20. a cooling water circulation pump; 21. a cooling water treatment device; 22. a supply water temperature sensor; 23. and controlling the terminal.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
The embodiment is a cooling water circulating device of an air conditioning system in an underground powerhouse of a hydropower station, and the structural principle of the cooling water circulating device is shown in figure 1. The heat exchanger 7 arranged between the tail water pressure pipeline and the water chilling unit 17 is arranged in the embodiment, one side of the heat exchanger 7 is connected with the water chilling unit 17 through a cooling water circulation pipeline, the other side of the heat exchanger is connected with the tail water pressure pipeline through a reservoir water circulation pipeline, and the tail water pressure pipeline comprises a water taking pressure pipeline 1 and a water drainage pressure pipeline 12. The cooling water on the two sides of the heat exchanger 7 and the reservoir water are subjected to indirect heat exchange in a countercurrent mode, the cooling water supply temperature entering the water chilling unit 17 is adjusted, and the safe, stable, energy-saving and efficient operation of the air-conditioning cooling water system is guaranteed.
In this embodiment, reservoir water side circulation pipeline is open cycle's high pressure pipeline, and equipment arranges the equipment computer lab near tail water pressure pipeline, and the reservoir water pipe network of minimize reservoir water side avoids too much pipeline and equipment to bear the high pressure, reduces engineering investment and pipe network risk of leaking.
In this embodiment, in the reservoir water circulation pipeline, the tail water pressure pipeline section connected to the reservoir water inlet of the heat exchanger 7 is the water taking pressure pipeline 1, and the tail water pressure pipeline section connected to the reservoir water outlet of the heat exchanger 7 is the water drainage pressure pipeline 12. High pressure reservoir water of reservoir water side directly gets water from water intaking pressure pipeline 1 through water intaking pipe 3, carries to the reservoir water side heat transfer unit of heat exchanger 7, and the pipeline between water intaking pressure pipeline 1 to heat exchanger 7 is water intaking pipe 3 wherein, is opened and is shut off control by water intaking ball valve 2. After the reservoir water is subjected to heat exchange and temperature rise through the reservoir water side heat exchange unit of the heat exchanger 7, the reservoir water containing heat is discharged to a drainage pressure pipeline 12 through a drainage pipe 10 by a reservoir water drainage pump 9, wherein the pipelines between the heat exchanger 7 and the drainage pressure pipeline 12 are the drainage pipes 10, and are controlled to be opened and closed by a drainage ball valve 11. The reservoir water of the reservoir water circulation pipeline is converged in the downstream reservoir to form open circulation.
In the embodiment, in order to meet the water quality requirement of reservoir water taking, the reservoir water processor 4 is arranged on the water taking pipe 3 for filtering and sterilizing treatment, so that the cleanliness of reservoir water taking is improved, and the heat exchange efficiency of the heat exchanger 7 and the operation safety of related equipment are guaranteed.
In this embodiment, the reservoir water flow sensor 5 and the water intake temperature sensor 6 are arranged on the water intake pipe 3 to constantly monitor parameters such as flow and temperature of reservoir water intake, the water discharge temperature sensor 8 is arranged on the water discharge pipe 10 to constantly monitor temperature parameters of reservoir water discharge, and the monitoring data access control terminal 23 is used for controlling the operation of the reservoir water discharge pump 9.
In the embodiment, the cooling water circulation pipeline is a closed-type circulating low-pressure pipeline and is connected with the water chilling unit 17 in the water chilling machine room and the cooling water side heat exchange unit on the other side of the heat exchanger 7, so that the pressure bearing requirements of the equipment such as the water chilling unit, a cooling water treatment device, a cooling water circulating pump and a valve and a pipe network are reduced, the investment cost of the equipment is reduced, and the phenomenon that water leakage easily occurs to the pipe network of the cooling water system due to high pressure bearing is avoided. The cold water machine room is close to an air conditioner load center of an underground workshop, excessive pipelines of an air conditioner system are avoided, the conveying loss of the air conditioner cold load is reduced, and the comprehensive energy efficiency of the air conditioner water system is improved.
In this embodiment, the low-pressure cooling water on the cooling water side is delivered from the condenser of the chiller 17 through the water return pipe 16 and is delivered to the cooling water side heat exchange unit of the heat exchanger 7, wherein the pipes from the outlet of the condenser of the chiller 17 to the heat exchanger 7 are the water return pipe 16, and are controlled to be opened and closed by the water return ball valve 15. After heat exchange and temperature reduction are carried out by the cooling water side heat exchange unit of the heat exchanger 7, low-temperature cooling water is conveyed to the condenser of the water chilling unit 17 through the water supply pipe 18 by the cooling water circulating pump 20, wherein the pipelines from the heat exchanger 7 to the condenser inlet of the water chilling unit 17 are the water supply pipe 18, and opening and closing control is carried out by the water supply ball valve 19 to form closed circulation.
In the embodiment, in order to meet the water quality requirement of the cooling water, the cooling water processor 21 is arranged on the water supply pipe 18 for filtering and sterilizing, so that the cleanliness of the cooling water is improved, and the heat exchange efficiency of the heat exchanger 7 and the operation safety of a water chilling unit and related equipment are guaranteed.
In this embodiment, the backwater temperature sensor 13 and the cooling water flow sensor 14 are arranged on the backwater pipe 16 to monitor parameters such as flow and temperature of the cooling backwater at all times, the water supply pipe 18 is provided with the water supply temperature sensor 22 to monitor temperature parameters of the cooling water supply at all times, and monitoring data is accessed to the control terminal 23 to control the operation of the reservoir water drainage pump 9.
In this embodiment, the cooling water circulation pump 20 adopts the fixed-frequency water pump to perform the fixed-flow operation, and the flow rate of the cooling water flowing through the water chilling unit is constant, which is favorable for the stable operation of the water chilling unit. The reservoir water drainage pump 9 adopts a variable frequency water pump to perform variable flow operation, and the operation flow of the reservoir water drainage pump 9 is adjusted.
In this embodiment, the monitoring data of the temperature sensor and the flow sensor are accessed to the control terminal 23, as shown in fig. 2. The control terminal 23 receives and processes monitored information data, and is used for controlling the reservoir water draining pump to perform variable flow operation, changing the reservoir water flow entering the reservoir water side of the heat exchanger 7, adjusting the heat exchange state of the cooling water circulating device, realizing adjustment of cooling water supply temperature, avoiding the damage of too low cooling water supply temperature to a water chilling unit, and ensuring energy-saving, efficient, safe and stable operation of the underground powerhouse air-conditioning cooling water system of the hydropower station.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a power station underground factory building air conditioning system's cooling water circulating device arranges between power station generating set's tail water pressure pipeline and underground factory building air conditioning system's cooling water set, its characterized in that has:
the heat exchanger is arranged between the tail water pressure pipeline and the water chilling unit and is used for realizing heat exchange between reservoir water in the tail water pressure pipeline and cooling water flowing through the water chilling unit;
the cooling water circulation pipeline is connected between one side of the heat exchanger and the water chilling unit and used for realizing closed circulation flow of low-pressure cooling water between the water chilling unit and the heat exchanger, and the cooling water circulation pump arranged on the cooling water circulation pipeline is used for controlling the flow of the cooling water in the cooling water circulation pipeline;
the reservoir water circulating pipeline is connected between the other side of the heat exchanger and the tail water pressure pipeline and is used for realizing open circulating flow of high-pressure reservoir water between the tail water pressure pipeline and the heat exchanger, and reservoir water in the reservoir water circulating pipeline is controlled to flow by a reservoir water drainage pump arranged on the reservoir water circulating pipeline;
a water intake temperature sensor and a water discharge temperature sensor are respectively arranged on a reservoir water circulating pipeline connected with a water inlet and a water outlet on the water side of the heat exchanger reservoir, a water supply temperature sensor and a water return temperature sensor are respectively arranged on a cooling water circulating pipeline connected with a water inlet and a water outlet on the cooling water side of the heat exchanger reservoir, a reservoir water flow sensor is arranged on the reservoir water circulating pipeline, and a cooling water flow sensor is arranged on the cooling water circulating pipeline;
and the control terminal is connected with the reservoir water flow sensor, the water taking temperature sensor, the drainage temperature sensor, the water supply temperature sensor, the return water temperature sensor, the cooling water flow sensor and the reservoir water drainage pump through a control circuit, and is used for receiving and processing information data monitored by the sensors and controlling and adjusting the running flow of the reservoir water drainage pump.
2. The cooling water circulation device of the air conditioning system of the underground powerhouse of the hydropower station according to claim 1, wherein: the running flow of the cooling water circulating pump is constant, and the flow of the cooling water flowing through the water chilling unit is constant, so that the stable running of the water chilling unit is facilitated.
3. The cooling water circulation device of the air conditioning system of the underground powerhouse of the hydropower station according to claim 1, wherein: in the reservoir water circulating pipeline, a water intake ball valve is arranged on a water intake pipe connected to a water inlet of the heat exchanger reservoir, and a water discharge ball valve is arranged on a water discharge pipe connected to a water outlet of the heat exchanger reservoir; in the cooling water circulation pipeline, a water supply pipe connected to a cooling water side water inlet of the heat exchanger is provided with a water supply ball valve, and a water return pipe connected to a cooling water side water outlet of the heat exchanger is provided with a water return ball valve.
4. The cooling water circulation device of the air conditioning system of the underground powerhouse of the hydropower station as claimed in claim 1, wherein: and the cooling water circulating pipeline is provided with a cooling water processor for filtering and sterilizing the cooling water flowing into the water chilling unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221334611.6U CN217519985U (en) | 2022-05-31 | 2022-05-31 | Cooling water circulating device of air conditioning system of underground powerhouse of hydropower station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221334611.6U CN217519985U (en) | 2022-05-31 | 2022-05-31 | Cooling water circulating device of air conditioning system of underground powerhouse of hydropower station |
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| CN217519985U true CN217519985U (en) | 2022-09-30 |
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| CN202221334611.6U Active CN217519985U (en) | 2022-05-31 | 2022-05-31 | Cooling water circulating device of air conditioning system of underground powerhouse of hydropower station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111677A (en) * | 2022-05-31 | 2022-09-27 | 中国电建集团华东勘测设计研究院有限公司 | Cooling water circulating device of air conditioning system of underground powerhouse of hydropower station and control method thereof |
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2022
- 2022-05-31 CN CN202221334611.6U patent/CN217519985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111677A (en) * | 2022-05-31 | 2022-09-27 | 中国电建集团华东勘测设计研究院有限公司 | Cooling water circulating device of air conditioning system of underground powerhouse of hydropower station and control method thereof |
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