Starting control method of deluge electromagnetic valve suitable for hydroelectric generating set

Abstract

The invention relates to the technical field of water and electricity, and discloses a deluge electromagnetic valve starting control method suitable for a hydroelectric generating set, and when a fire occurs, a deluge electromagnetic valve is opened only when set conditions are met. The problem that in the prior art, the safety of power generation equipment is threatened by misoperation when a unit is started and runs is solved.

Description

Technical Field

[0001] The invention relates to the technical field of hydropower, and in particular to a method for starting and controlling a shower solenoid valve suitable for a hydropower generator set. Background Art

[0002] The deluge system is an important auxiliary equipment system for the generator set. When a fire occurs unexpectedly in the generator set area, the nearby temperature and smoke detectors will be activated, and the unit fire alarm system will start the on-site sound and light alarm to send out sound and light alarms, reminding the on-site operators and operators to check the on-site situation in time, take necessary emergency measures or evacuate to a safe area immediately. At the same time, the deluge system will be linked to quickly spray and extinguish the fire to prevent the spread of the fire and accidents. If the fire alarm system is misjudged due to some uncontrollable factors on site, and the fire alarm signal is misactivated, the deluge system will be linked to spray and extinguish the fire on the normally running generator set by mistake, which may cause the generator to short-circuit, electric shock and other dangerous situations, and cause irreversible damage to metal parts, which will cause unbearable huge risks to the safe and stable operation of the hydropower plant. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a method for starting and controlling a deluge solenoid valve applicable to a hydroelectric generator set, which solves the problems existing in the prior art such as malfunction during startup of the unit threatening the safety of the power generation equipment.

[0004] The technical solution adopted by the present invention to solve the above problems is:

[0005] The invention discloses a method for starting and controlling a deluge solenoid valve of a hydroelectric generator set. When there is a fire, the deluge solenoid valve is opened only when the set conditions are met.

[0006] As a preferred technical solution, it includes a manual mode: when the temperature sensor in the generator set area detects a fire, only the sound and light alarm is triggered on site to send out a sound and light alarm, the signal to start the deluge solenoid valve is shielded, and whether to open the deluge solenoid valve is manually determined based on the on-site situation; if so, the deluge solenoid valve is manually opened.

[0007] As a preferred technical solution, the shower solenoid valve is turned on by manually pressing a start button on a bus control panel.

[0008] As a preferred technical solution, a manual mode is included: when the smoke detector in the generator set area detects a fire, only the sound and light alarm is triggered on site to send out a sound and light alarm, the signal to start the deluge solenoid valve is shielded, and whether to open the deluge solenoid valve is manually determined based on the on-site situation; if so, the deluge solenoid valve is manually opened.

[0009] As a preferred technical solution, a manual mode is included: when the aspirating smoke detector in the generator set area detects a fire, only the sound and light alarm is triggered on site to send out a sound and light alarm, the signal to start the deluge solenoid valve is shielded, and whether to open the deluge solenoid valve is manually determined based on the on-site situation; if so, the deluge solenoid valve is manually opened.

[0010] As a preferred technical solution, the shower solenoid valve is turned on by manually pressing a start button on a bus control panel.

[0011] As a preferred technical solution, it includes an automatic mode: three external signals, namely, an electrical fault signal, a guide vane fully closed signal, and a GCB position signal, are serially connected to the self-starting logic of the deluge solenoid valve to ensure that the deluge solenoid valve can be automatically opened only when the unit is shut down.

[0012] As a preferred technical solution, the electrical accident signal, the guide vane fully closed signal, and the GCB position signal are connected to the unit fire alarm system through the input module, and the action status of the electrical accident signal, the guide vane fully closed signal, and the GCB position signal is displayed in real time on the fire alarm controller.

[0013] As an optimal technical solution, the fire protection system will automatically open the deluge solenoid valve only when the on-site temperature detectors and smoke detectors are activated, the fire alarm system reports a fire, and the electrical accident signal, the guide vane fully closed signal, and the GCB position signal are activated at the same time.

[0014] As a preferred technical solution, when the on-site temperature detector and the aspirating smoke detector are both activated, the fire alarm system reports a fire, and the electrical accident signal, the guide vane fully closed signal, and the GCB position signal are activated at the same time, the fire protection system will automatically open the deluge solenoid valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention can ensure that the shower solenoid valve operates correctly and reliably, and avoids erroneous operation when the unit is started and operates, threatening the safety of the power generation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flowchart of the manual mode;

[0018] Figure 2 This is a flowchart of the automatic mode. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0020] Example 1

[0021] like Figure 1 to Figure 2As shown, a method for starting and controlling the solenoid valve of a deluge system of a hydroelectric generator set is provided to ensure that the deluge solenoid valve operates correctly and reliably, and to avoid malfunction when the unit is started and operated, threatening the safety of the power generation equipment.

[0022] The present invention designs two control modes: manual and automatic.

[0023] 1. Manual mode, control logic is as follows Figure 1 .

[0024] The unit's deluge solenoid valve linkage module is defined to the fire alarm controller bus control panel. When the temperature and smoke detectors in the generator area detect abnormal fire conditions, only the sound and light alarm is triggered on site to send out sound and light alarms, and the external deluge solenoid valve start signal is shielded. In this mode, regardless of whether the unit is in operation or not, it is necessary to manually press the start button through the bus control panel according to the actual needs of the site to open the deluge solenoid valve and spray the unit to extinguish the fire.

[0025] 2. Automatic mode, control logic is as follows Figure 2 .

[0026] Three external signals, including electrical accident signal, guide vane full-close signal, and GCB position signal, are connected in series to the linkage conditions of the unit's deluge solenoid valve to ensure that the deluge solenoid valve can be automatically opened only when the unit is shut down. The unit's fire alarm system is connected through the input module, and the action status is displayed in real time on the fire alarm controller, so that the self-starting status of each process of the deluge solenoid valve can be intuitively viewed. When the on-site temperature and smoke detectors are activated, the fire alarm system reports a fire, and the above three external signals are also activated at the same time, the fire protection system can automatically start the unit's deluge system to spray water. This mode effectively avoids serious consequences such as short circuit and electric shock in the generator caused by the automatic opening of the deluge solenoid valve for spraying fire when the unit is in the starting state.

[0027] Three external logic signals, including electrical fault signal, guide vane fully closed signal and GCB position signal, are connected in series to the self-starting logic of the solenoid valve of the hydroelectric generator deluge system to prevent the deluge system from spraying the running generator set, reduce the risk of damage to the generator set equipment, and effectively improve the reliability and correctness of the operation of the generator fire-fighting auxiliary equipment.

[0028] Three external signals, including electrical fault signal, guide vane fully closed signal and GCB position signal, are serially connected to the self-starting logic of the deluge solenoid valve of the hydropower generator set to ensure that the deluge solenoid valve can be automatically opened for spraying fire extinguishing only after the unit is shut down.

[0029] As described above, the present invention can be preferably implemented.

[0030] All features disclosed in all embodiments in this specification, or steps in all methods or processes implicitly disclosed, except for mutually exclusive features and / or steps, can be combined and / or expanded or replaced in any manner.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for starting and controlling a shower solenoid valve of a hydroelectric generator set, characterized in that: When there is a fire, the deluge solenoid valve will be opened only when the set conditions are met.

2. A method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 1, characterized in that: Including manual mode: when the temperature sensor in the generator set area detects a fire, only the sound and light alarm will be triggered on site to sound a sound and light alarm, and the signal to start the deluge solenoid valve will be shielded. The person will manually judge whether to open the deluge solenoid valve based on the on-site situation; if so, the deluge solenoid valve will be opened manually.

3. A method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 2, characterized in that: Manually press the start button through the bus control panel to open the rain solenoid valve.

4. The method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 1, characterized in that: Including manual mode: when the smoke detector in the generator area detects a fire, only the sound and light alarm will be triggered on site to sound a sound and light alarm, and the signal to start the deluge solenoid valve will be shielded. The person will manually judge whether to open the deluge solenoid valve based on the on-site situation; if so, the deluge solenoid valve will be opened manually.

5. A method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 4, characterized in that: Including manual mode: when the aspirating smoke detector in the generator area detects a fire, only the sound and light alarm will be triggered on site to sound a sound and light alarm, and the signal to start the deluge solenoid valve will be shielded. The person will manually judge whether to open the deluge solenoid valve based on the on-site situation; if so, the deluge solenoid valve will be opened manually.

6. A method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 4 or 5, characterized in that: Manually press the start button through the bus control panel to open the rain solenoid valve.

7. The method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 1, characterized in that: Including automatic mode: three external signals, namely electrical accident signal, guide vane fully closed signal and GCB position signal, are connected in series in the self-starting logic of the deluge solenoid valve to ensure that the deluge solenoid valve can be automatically opened only when the unit is shut down.

8. The method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 7, characterized in that: The electrical accident signal, guide vane full-close signal and GCB position signal are connected to the unit fire alarm system through the input module, and the action status of the electrical accident signal, guide vane full-close signal and GCB position signal is displayed in real time on the fire alarm controller.

9. A method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 8, characterized in that: When the on-site temperature detectors and smoke detectors are activated, the fire alarm system reports a fire, and the electrical accident signal, the guide vane full-close signal, and the GCB position signal are activated at the same time, the fire protection system will automatically open the deluge solenoid valve.

10. A method for starting and controlling a shower solenoid valve of a hydroelectric generator set according to claim 9, characterized in that: When the on-site temperature detectors and aspirating smoke detectors are activated, the fire alarm system reports a fire, and the electrical accident signal, guide vane full-close signal, and GCB position signal are activated at the same time, the fire protection system will automatically open the deluge solenoid valve.

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