CN217711078U - Emergency drainage system for underground plant - Google Patents
Emergency drainage system for underground plant Download PDFInfo
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- CN217711078U CN217711078U CN202221862157.1U CN202221862157U CN217711078U CN 217711078 U CN217711078 U CN 217711078U CN 202221862157 U CN202221862157 U CN 202221862157U CN 217711078 U CN217711078 U CN 217711078U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides an emergency drainage system for underground factories, which comprises a submersible pump, a drainage pipeline, a pressure transmitter, a control valve, a flowmeter, a water level gauge, a signal cable and a control box; arranging a water collecting well in an underground powerhouse of the hydropower station; and the control box is arranged outside the underground powerhouse of the hydropower station. The control box is arranged in a safe area outside a factory, so that the control box can be prevented from being damaged by flooding; the water pump adopts a submersible pump, and the water pump motor can still normally run for draining water under the condition of being submerged by water. Therefore, even if the underground powerhouse of the hydropower station is flooded, the control box and the submersible pump can still work normally, and the normal operation of the whole drainage system is ensured. In addition, in this application, immersible pump, drainage pipe and the signal cable who is connected with the control box have set up in advance, therefore, when the accident takes place, the drainage processing accident in time, and accident processing efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of hydraulic and hydroelectric engineering, concretely relates to emergent drainage system of underground factory building.
Background
High-pressure water pipelines and equipment in the underground powerhouse of the hydropower station are more, and once the equipment and the pipelines are damaged and leaked after long-term operation, the risk of flooding the powerhouse exists. The long-axis deep-well pump is generally selected for use to the rock mass seepage drainage system that power station underground factory building set up, and the water pump motor does not have waterproof function, and the system control case sets up in underground factory building, and water pump motor or control box are in case flooded, and whole drainage system will lose drainage function, will be given will the responsibility to the development of accident, leads to the accident to enlarge, causes equipment, personnel's injury, and the loss is huge. In addition, when later stage accident handling, need set up large-traffic water pump temporarily and lay cable and drain pipe long distance, and the power station underground factory building is generally far away apart from ground exit position, about more than 1000m, leads to the accident handling inconvenience, and consuming time is hard, is unfavorable for emergency rescue.
SUMMERY OF THE UTILITY MODEL
To the defect that prior art exists, the utility model provides an emergent drainage system of underground factory can effectively solve above-mentioned problem.
The utility model adopts the technical scheme as follows:
the utility model provides an emergency drainage system for underground factories, which comprises a submersible pump (3), a drainage pipeline (4), a pressure transmitter (5), a control valve, a flowmeter (9), a water level gauge (10), a signal cable (11) and a control box (13);
arranging a water collecting well (1) in an underground powerhouse of the hydropower station; arranging the control box (13) outside an underground powerhouse of the hydropower station;
the submersible pump (3) is arranged inside the water collecting well (1); one end of the drainage pipeline (4) is connected with the drainage end of the submersible pump (3); the other end of the drainage pipeline (4) penetrates through the water collecting well (1) and is finally communicated with an external safety outlet; -mounting the pressure transmitter (5), the control valve and the flow meter (9) on the water drain line (4);
the water collecting well (1) is connected with a lower drainage gallery of an underground workshop; arranging the water level gauge (10) in a drainage gallery at the lower layer of the underground workshop;
the control box (13) is respectively connected with the submersible pump (3), the pressure transmitter (5), the flowmeter (9) and the water level gauge (10) through the signal cable (11).
Preferably, the control valve comprises a check valve (6), an anti-freezing emptying valve (7) and a regulating valve (8); the regulating valve (8) is connected with the control box (13) through the signal cable (11).
Preferably, the check valve (6) is a micro-resistance slow-closing check valve.
Preferably, the water level gauge (10) is three sets of floating ball type water level gauges.
Preferably, the flow meter (9) is a plug-in electromagnetic flow meter.
Preferably, the control box (13) is arranged in a factory-outside safety area.
Preferably, an automatic control device is arranged in the control box (13); and the automatic control device is in communication connection with the central control room of the power station.
The utility model provides a pair of emergent drainage system of underground factory has following advantage:
the control box is arranged in a safe area outside a factory, so that the control box can be prevented from being damaged by flooding; the water pump adopts a submersible pump, and the water pump motor can still normally run for draining water under the condition of being submerged by water. Therefore, even if the underground powerhouse of the hydropower station is flooded, the control box and the submersible pump can still work normally, and the normal operation of the whole drainage system is ensured. In addition, in this application, immersible pump, drainage pipe and the signal cable who is connected with the control box have set up in advance, therefore, when the accident takes place, the drainage processing accident in time, and accident processing efficiency is high.
Drawings
Fig. 1 is the utility model provides a pair of emergent drainage system of underground works's structural schematic.
Wherein:
1- - -a sump well; 2- - -lower drainage galleries; 3- -diving pump; 4- -a drainage pipeline; 5- -a pressure transmitter; 6- -check valve; 7- -anti-freezing atmospheric valve; 8-adjusting valve; 9- -a flow meter; 10- -water level gauge; 11- -Signal cable; 12- -a power source; 13- -control box;
the direction indicated by the arrow is the emergency drainage direction.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides an emergency drainage system for underground powerhouses, which utilizes a submersible pump to drain water generated when a high-pressure water pipe of the underground powerhouse of a hydropower station leaks out of a ground safety outlet, thereby preventing the accident from being enlarged; when the water level was high very much in the underground factory, the immersible pump lift was little very much, and intraductal flow is big very much to deviate from the normal operating condition of water pump, probably lead to water pump motor overload to damage, the control box passes through the governing valve according to flowmeter instantaneous flow signal and adjusts the interior flow of pipeline in real time this moment, makes the water pump move in high efficiency stable area. Meanwhile, the control box reversely calculates the water level change condition in the underground workshop through the accumulated flow counted by the flow meter, and provides auxiliary basis for accident disposal and emergency rescue. In addition, in the application, the control box is arranged in a safe area on the outer surface of a factory, so that the control box can be prevented from being damaged by flooding; the water pump adopts a submersible pump, and the water pump motor can still normally run for draining water under the condition of being submerged by water. Therefore, even if the underground powerhouse of the hydropower station is flooded, the control box and the submersible pump can still work normally, and the normal operation of the whole drainage system is ensured. In addition, in this application, immersible pump, drainage pipe and the signal cable who is connected with the control box have set up in advance, therefore, when the accident takes place, the drainage processing accident in time, and accident processing efficiency is high.
Referring to fig. 1, the utility model provides an emergency drainage system for underground plant, which comprises a submersible pump 3, a drainage pipeline 4, a pressure transmitter 5, a control valve, a flowmeter 9, a water level gauge 10, a signal cable 11 and a control box 13;
a water collecting well 1 is arranged in an underground powerhouse of the hydropower station; arranging a control box 13 outside an underground powerhouse of the hydropower station;
the submersible pump 3 is arranged inside the water collecting well 1; one end of the drainage pipeline 4 is connected with the drainage end of the submersible pump 3; the other end of the drainage pipeline 4 passes through the water collecting well 1 and is finally communicated with an external safety outlet; a pressure transmitter 5, a control valve and a flowmeter 9 are arranged on the drainage pipeline 4;
the water collecting well 1 is connected with a lower drainage gallery of an underground workshop; a water level gauge 10 is arranged in a drainage gallery at the lower layer of an underground factory building;
and the control box 13 is respectively connected with the submersible pump 3, the pressure transmitter 5, the flowmeter 9 and the water level gauge 10 through signal cables 11.
The function of the components is described below:
the flowmeter 9 is arranged on the drainage pipeline 4 and used for monitoring the instantaneous drainage flow and the accumulated drainage flow of the submersible pump 3 in real time;
the pressure transmitter 5 is arranged on the drainage pipeline 4 and used for monitoring the outlet pressure of the submersible pump 3;
and one end of the drainage pipeline 4 is connected with the submersible pump 3, and the other end of the drainage pipeline is communicated with the safety outlet outside the factory and used for draining the water in the water collecting well 1 to the outside of the ground safety outlet.
The flowmeter 9 is arranged on the drainage pipeline 4 and used for monitoring the instantaneous drainage flow and the accumulated drainage flow of the submersible pump 3 in real time; as a specific implementation, the flow meter 9 is a plug-in electromagnetic flow meter;
the pressure transmitter 5 is arranged on the drainage pipeline 4 and used for monitoring the outlet pressure of the submersible pump 3, and the pressure transmitter 5 has an analog quantity remote transmission function;
the water level gauge 10 is arranged in a drainage gallery at the lower layer of the underground powerhouse and is used for collecting abnormal rising signals of the water level of the underground powerhouse; as a specific implementation mode, the water level meter 10 is three sets of floating ball type water level meters, and when any two sets of water level meters send out a water level overhigh signal, the submersible pump 3 is automatically started to drain water.
The control valve comprises a check valve 6, an anti-freezing emptying valve 7 and a regulating valve 8;
the regulating valve 8 is connected with the control box 13 through a signal cable 11, and can regulate the water flow of the drainage pipeline 4 in real time according to the instantaneous flow signal of the flowmeter 9, so that the system operation safety is ensured.
The anti-freezing air release valve 7 is arranged at a lower position on the drainage pipeline 4, and can release accumulated water in the pipeline after the emergency drainage system operates in winter, so that the pipeline is prevented from being frozen and cracked.
The check valve 6 is a micro-resistance slow-closing check valve, has small hydraulic loss and can prevent the damage of the system equipment caused by the large fluctuation of the water pressure in the drainage pipeline 4.
The submersible pump 3 is used as a drainage water pump, and the water pump motor can still normally run for drainage under the condition of being submerged by water. When the distance between the submersible pump 3 and the control box 13 is long, the submersible pump 3 adopts high-voltage grade equipment (3.3 kV or 6 kV) to reduce voltage drop; when the distance between the submersible pump 3 and the control box 13 is short, the submersible pump 3 is selected from low-voltage class equipment (0.4 kV).
The control box 13 is arranged in a safety area outside a factory and is prevented from being damaged by flooding; an automatic control device is arranged in the control box 13; the automatic control device is in communication connection with the central control room of the power station. The automatic control device is used for automatically controlling the starting of the submersible pump 3 according to the feedback signal of the water level gauge 10 and sending an abnormal high water level alarm signal to a central control room of the power station; and the water level change condition in the underground powerhouse can be reversely calculated in an auxiliary manner according to the accumulated flow signal counted by the flowmeter 9. And the device is also used for receiving an instantaneous flow signal of the flowmeter 9 and adjusting the flow in the drainage pipeline 4 in real time through the adjusting valve 8. And the pressure sensor is also used for receiving a signal of the pressure transmitter 5 and monitoring the outlet pressure of the submersible pump 3.
The following detailed description discloses the working principle of the utility model:
when the water level of the underground powerhouse rises abnormally, any two sets of 3 sets of water level gauges 10 arranged in the lower drainage gallery act to send out abnormal water level rising signals to the control box 13; the control box 13 automatically starts the submersible pump 3 and sends an abnormal high water level alarm signal to a central control room of the power station, accumulated water in a factory building is discharged to an outside-factory safety outlet through the submersible pump 3, the valve and the drainage pipeline 4, meanwhile, the flow meter 9 starts to monitor a flow signal in the drainage pipeline 4 and send the flow signal to the control box 13, and when the instantaneous flow in the pipeline is overlarge, the control box 13 operates the regulating valve 8 to regulate the flow in the pipeline, so that the motor is prevented from being damaged by the overload of the water pump;
the control box 13 assists in back-calculating the water level change condition in the underground plant according to the accumulated flow signals counted by the flow meter 9, and provides auxiliary basis for accident disposal and emergency rescue.
The pressure in the pipeline can be remotely monitored through the pressure transmitter 5 during system debugging or starting, and after the system stops, in order to prevent accumulated water in the pipeline from frost cracking, the accumulated water in the pipeline is discharged through the anti-freezing air discharge valve 7, so that the safety of equipment and the pipeline is ensured.
The following is further explained by taking a certain large-scale underground plant engineering of the pumped storage power station as an example and combining the attached drawings:
in a large pumped storage power station project in a northern area, the underground plant is about 180m long, 26m wide and 55m high, an auxiliary cavern is added, and the underground volume is about 27 ten thousand m3Divide four layers altogether, arrange a large amount of electromechanical device, and incessant personnel on duty during the operation, generator layer elevation EL.239m, nearer ground export for the export of traffic hole, its ground elevation EL.325m, traffic hole apart from the factory building apart from about 1.4km, adopt the utility model discloses an emergent drainage system of underground factory building.
3 sets of floating ball type water level meters 10 are arranged on a lower drainage gallery, when any two sets of water level meters send out a water level overhigh signal, a control box 13 automatically controls the submersible pump 3 to start, and sends out an abnormal high water level alarm signal to a central control room of a power station, water in a factory building is discharged out of the ground of an outlet of a traffic hole through a valve and a drainage pipeline 4, meanwhile, a flow meter 9 monitors a flow signal in the pipeline and sends the flow signal to the control box 13, when the instantaneous flow in the pipeline is overhigh, the control box 13 operates an adjusting valve 8 to adjust the flow in the pipeline, the water pump is prevented from being overloaded, a motor is prevented from being damaged, and the submersible pump 3 is enabled to operate in a high-efficiency stable area;
the control box 13 carries out auxiliary analysis and back calculation on the water level change condition in the underground plant according to the accumulated flow signals counted by the flow meter 9, and provides auxiliary basis for accident disposal and emergency rescue.
When the system is debugged or started, the pressure in the pipeline can be remotely monitored by the pressure transmitter 5; after the system stops, accumulated water in the pipeline is discharged through the anti-freezing air discharge valve 7 to prevent the frozen cracking of the accumulated water in the pipeline, so that the safety of equipment and the pipeline is ensured. The flow rate of the submersible pump 3 is 350m3The lift is 178m, the voltage class is 3.3kV (the distance between the control box and the water pump is about 1.5 km).
The utility model provides an emergent drainage system of underground factory has following advantage:
(1) The system can be arranged by combining with a rock mass leakage water collecting well or a water collecting pit in an underground factory, and has simple structure, economy and practicability;
(2) The system can ensure the safety of personnel and equipment under the condition that a high-pressure water pipe of an underground workshop leaks a large accident, and simultaneously provides an effective means for emergency accident treatment under the condition that a factory accident is flooded by a large amount of water, thereby striving for time for emergency rescue.
(3) The water pump drainage flow is adjusted in real time by the adjusting valve, the motor is prevented from being damaged by overload of the water pump under special working conditions, the water pump is enabled to operate in a high-efficiency stable area, and the water pump is energy-saving and environment-friendly.
(4) Under the condition that the water level monitoring signal is out of order, the control box reversely calculates the water level change condition in the underground workshop through the accumulated flow signal counted by the flowmeter, and provides auxiliary basis for accident handling and emergency rescue.
(5) And automatic control of the system and auxiliary analysis of accident conditions are realized. The method can be widely applied to underground factory building system engineering.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (7)
1. An emergency drainage system for an underground factory is characterized by comprising a submersible pump (3), a drainage pipeline (4), a pressure transmitter (5), a control valve, a flowmeter (9), a water level gauge (10), a signal cable (11) and a control box (13);
arranging a water collecting well (1) in an underground powerhouse of the hydropower station; arranging the control box (13) outside an underground powerhouse of the hydropower station;
the submersible pump (3) is arranged inside the water collecting well (1); one end of the drainage pipeline (4) is connected with the drainage end of the submersible pump (3); the other end of the drainage pipeline (4) penetrates through the water collecting well (1) and is finally communicated with an external safety outlet; -mounting the pressure transmitter (5), the control valve and the flow meter (9) on the water drain line (4);
the water collecting well (1) is connected with a lower drainage gallery of an underground workshop; arranging the water level gauge (10) in a drainage gallery at the lower layer of the underground workshop;
the control box (13) is respectively connected with the submersible pump (3), the pressure transmitter (5), the flowmeter (9) and the water level gauge (10) through the signal cable (11).
2. An underground plant emergency drainage system according to claim 1, wherein the control valves comprise a check valve (6), an anti-freeze blow-down valve (7) and a regulating valve (8); the regulating valve (8) is connected with the control box (13) through the signal cable (11).
3. An underground plant emergency drainage system according to claim 2, wherein the check valve (6) is a micro-block slow-closing check valve.
4. An underground plant emergency drainage system according to claim 1, characterized in that the water level gauge (10) is a three-set ball float water level gauge.
5. An underground plant emergency drainage system according to claim 1, wherein the flow meter (9) is a plug-in electromagnetic flow meter.
6. An underground plant emergency drainage system according to claim 1, wherein the control box (13) is arranged in a secure area outside the plant.
7. An emergency drainage system for an underground plant according to claim 1, characterized in that inside said control box (13) automatic control means are arranged; and the automatic control device is in communication connection with a central control room of the power station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221862157.1U CN217711078U (en) | 2022-07-19 | 2022-07-19 | Emergency drainage system for underground plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221862157.1U CN217711078U (en) | 2022-07-19 | 2022-07-19 | Emergency drainage system for underground plant |
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| CN217711078U true CN217711078U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221862157.1U Active CN217711078U (en) | 2022-07-19 | 2022-07-19 | Emergency drainage system for underground plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072364A (en) * | 2023-09-20 | 2023-11-17 | 中铁十四局集团第二工程有限公司 | Tail water treatment system of hydroelectric power station and hydroelectric power generation system |
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2022
- 2022-07-19 CN CN202221862157.1U patent/CN217711078U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072364A (en) * | 2023-09-20 | 2023-11-17 | 中铁十四局集团第二工程有限公司 | Tail water treatment system of hydroelectric power station and hydroelectric power generation system |
| CN117072364B (en) * | 2023-09-20 | 2024-04-02 | 中铁十四局集团第二工程有限公司 | Tail water treatment system of hydroelectric power station and hydroelectric power generation system |
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