CN217501851U - Water-flooding-proof workshop protection system for hydroelectric power plant - Google Patents
Water-flooding-proof workshop protection system for hydroelectric power plant Download PDFInfo
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- CN217501851U CN217501851U CN202121446389.4U CN202121446389U CN217501851U CN 217501851 U CN217501851 U CN 217501851U CN 202121446389 U CN202121446389 U CN 202121446389U CN 217501851 U CN217501851 U CN 217501851U
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Abstract
The utility model relates to a hydroelectric power plant water logging prevention factory building protection system belongs to power station technical field. The utility model comprises a protection system arranged on a water turbine group layer and a protection system arranged at the bottommost layer of a factory building, wherein the protection system of the water turbine group layer comprises a water discharge control cabinet of a top cover of the unit and a LCU control cabinet of the unit, and is used for receiving signals of a water level annunciator of the water turbine group layer, and the water level annunciator of the top cover is arranged in a waterwheel room of the unit; the protection system of the bottommost layer of the factory building comprises a factory building overhauling drainage control cabinet and a factory building leakage drainage control cabinet, the factory building overhauling drainage control cabinet and the factory building leakage drainage control cabinet are used for receiving signals of a water level annunciator of the bottommost layer of the factory building, the factory building overhauling drainage control cabinet and the factory building leakage drainage control cabinet are communicated with a public LCU respectively to transmit the received signals to the public LCU, no less than 3 sets of water level annunciators are required to be configured on the bottommost layer of the factory building, and the water level annunciators adopt at least 2 different principles. The combined judgment is carried out by adopting various water level monitoring devices, various reasons causing flooding of the plant can be found in time, accident water sources are cut off in time, and equipment loss is reduced.
Description
Technical Field
The utility model relates to a hydroelectric power plant water logging prevention factory building protection system belongs to power station technical field.
Background
The water flooded workshop is one of the main risks of the hydroelectric power plant, and the accident of the water flooded workshop is characterized by sudden occurrence, quick development, great harm, extremely serious consequences, and great equipment loss and casualties. When a plant is flooded, the system can give an alarm and process in time, and the protection system needs to directly act on an emergency shutdown to reduce loss.
Disclosure of Invention
In order to discover the accident as early as possible, in time cut off accident water source as far as, reduce the equipment loss, avoid the casualties, reduce the inside flooding risk of factory building, the utility model provides a hydroelectric power plant prevents flooding factory building protection system.
The utility model adopts the following technical scheme:
a protection system for a flood-proof workshop of a hydroelectric power plant comprises a protection system arranged on a water turbine group layer and a protection system arranged on the bottommost layer of the workshop,
the protection system of the water turbine set layer comprises a set top cover drainage control cabinet and a set LCU control cabinet, and is used for receiving signals of a water level annunciator of the water turbine set layer, a set waterwheel chamber is provided with the top cover water level annunciator, and when the water level annunciator of the set waterwheel chamber reaches an alarm value, an alarm is triggered;
the protection system of factory building bottom includes that the factory building overhauls drainage control cabinet and factory building seepage drainage control cabinet, both are used for receiving the signal of the water level signal ware of factory building bottom, both convey the signal of receiving to public LCU with public LCU communication respectively, 3 sets of water level signal ware should be no less than in the configuration of factory building bottom, 2 kinds of different principles are adopted at least to the water level signal ware, every set of water level signal ware homoenergetic sends alarm value signal and shut down value signal, 1 arbitrary set of water level signal ware reaches alarm value when the factory building bottom, trigger the warning, reach shut down value when 2 arbitrary sets of water level signal ware of factory building bottom, trigger the machine set emergency accident of whole units water machine of factory building and shut down.
Further, the protection system of the hydraulic turbine group layer is specifically set as follows: set up in the hydraulic turbine top cap and put into formula level gauge, set up the ultrasonic wave level gauge in the hydraulic turbine speed regulator intermediate layer, both insert unit top cap drainage control cabinet, set up in the unit top cap drainage control cabinet and keep apart the spliter, transmit the signal of receiving to first unit LCU switch board simultaneously, set up capacitanc level switch in the waterwheel room, its signal that corresponds transmits to unit top cap drainage control cabinet and first unit LCU switch board simultaneously.
Further, the protection system at the bottommost layer of the plant is specifically set as follows: an ultrasonic liquid level meter and two liquid level switches are arranged at the bottom of the foundation grouting drainage gallery stair, signals of the ultrasonic liquid level meter and one of the liquid level switches are sent to a workshop maintenance drainage control cabinet, and signals of the other liquid level switch are sent to a workshop leakage drainage control cabinet; the workshop seepage water collecting well is provided with an ultrasonic liquid level meter, a drop-in liquid level meter and a float switch, the ultrasonic liquid level meter and the drop-in liquid level signal are connected and sent to the workshop seepage and drainage control cabinet, and the float switch signal is connected and sent to the workshop maintenance and drainage control cabinet.
Furthermore, a capacitance type liquid level switch is arranged in a tail water inlet manhole of the hydraulic turbine set, and a signal of the capacitance type liquid level switch is connected to the LCU control cabinet of the hydraulic turbine set and is connected to a computer monitoring system.
Furthermore, a camera is arranged at the leakage water collecting well of the factory building and used for monitoring the water level of the water collecting well and the water level of the gallery, and the camera is connected into the computer monitoring system.
Furthermore, a water level annunciator in the protection system of the water turbine group layer and a water level annunciator in the protection system of the bottommost layer of the plant are connected to a computer monitoring system.
The working principle is as follows: and a plurality of sets of water level annunciators of different types are adopted to monitor the water level of the water wagon chamber of the unit and the bottommost layer of the workshop, and when the water level annunciator of the top cover of the water wagon chamber of the unit reaches an alarm value, an alarm is triggered. And (4) triggering alarm when any 1 set of water level signal device at the bottommost layer of the plant reaches an alarm value. Any 2 sets of water level annunciators on the bottommost layer of the plant reach a stop value, and all the unit water machines of the plant are triggered to stop in an emergency accident.
Has the advantages that: 1. various water level monitoring devices are adopted for combined judgment, so that the alarm accuracy when a water-flooded workshop accident occurs is improved, and false alarm is prevented;
2. the protection system can find out various reasons causing flooding of the plant in time, cut off accident water sources in time, and simultaneously directly act on emergency shutdown, so that equipment loss is reduced, and casualties are avoided.
Drawings
FIG. 1: the structure schematic diagram of a protection system of a water turbine group layer;
FIG. 2 is a schematic diagram: the structure of the protection system at the bottommost layer of the plant is schematic.
Detailed Description
The invention will be further explained and explained in detail with reference to the drawings and the embodiments.
Example 1: a water flooding-proof factory building protection system of a hydroelectric power plant comprises a protection system arranged on a water turbine group layer and a protection system arranged on the bottommost layer of the factory building,
the protection system of the water turbine set layer comprises a set top cover drainage control cabinet and a set LCU control cabinet, and is used for receiving signals of a water level annunciator of the water turbine set layer, a set waterwheel chamber is provided with the top cover water level annunciator, and when the water level annunciator of the set waterwheel chamber reaches an alarm value, an alarm is triggered;
the protection system of factory building bottom includes that the factory building overhauls drainage control cabinet and factory building seepage drainage control cabinet, both are used for receiving the signal of the water level signal ware of factory building bottom, both convey the signal of receiving to public LCU with public LCU communication respectively, 3 sets of water level signal ware should be no less than in the configuration of factory building bottom, 2 kinds of different principles are adopted at least to the water level signal ware, every set of water level signal ware homoenergetic sends alarm value signal and shut down value signal, 1 arbitrary set of water level signal ware reaches alarm value when the factory building bottom, trigger the warning, reach shut down value when 2 arbitrary sets of water level signal ware of factory building bottom, trigger the machine set emergency accident of whole units water machine of factory building and shut down.
Example 2: in this embodiment, there are 5 groups of hydraulic turbine sets, each group of hydraulic turbine sets is provided with the same protection system, as shown in fig. 1, the protection system of the hydraulic turbine set layer is specifically set as: set up in the hydraulic turbine top cap and put into formula level gauge, set up the ultrasonic wave level gauge in the hydraulic turbine speed regulator intermediate layer, both insert unit top cap drainage control cabinet, set up in the unit top cap drainage control cabinet and keep apart the spliter, transmit the signal of receiving to first unit LCU switch board simultaneously, set up capacitanc level switch in the waterwheel room, its signal that corresponds transmits to unit top cap drainage control cabinet and first unit LCU switch board simultaneously.
When the LCU control cabinet of the first unit detects that signals of a top cover of a water turbine chamber, signals of a speed regulator interlayer liquid level meter (the signals reach a set value, the set value is determined according to a field test) and signals of a liquid level switch meet any two of the signals, starting an emergency shutdown process of the corresponding unit, closing guide vanes and closing a cylinder valve;
when the top cover drainage control cabinet detects that signals of a top cover of the water turbine chamber, signals of a speed regulator interlayer liquid level meter (the signals reach set values which are determined according to field tests) and signals of a liquid level switch meet any two of the signals, the water turbine chamber is started and shut down to the second unit LCU control cabinet, the second unit LCU control cabinet starts backup protection, then a corresponding unit emergency shut-down flow is started, guide vanes are closed, and barrel valves are closed.
As shown in fig. 2, the protection system at the bottommost layer of the plant is specifically set as follows: an ultrasonic liquid level meter and two liquid level switches are arranged at the bottom of the foundation grouting drainage gallery stair, signals of the ultrasonic liquid level meter and one of the liquid level switches are sent to a workshop maintenance drainage control cabinet, and signals of the other liquid level switch are sent to a workshop leakage drainage control cabinet; the workshop seepage water collecting well is provided with an ultrasonic liquid level meter, a drop-in liquid level meter and a float switch, the ultrasonic liquid level meter and the drop-in liquid level signal are connected and sent to the workshop seepage and drainage control cabinet, and the float switch signal is connected and sent to the workshop maintenance and drainage control cabinet.
When the public LCU simultaneously monitors an ultrasonic liquid level meter, a liquid level switch and a floating ball switch of a factory building seepage water collecting well at the bottom of a foundation grouting drainage gallery stair, the public LCU sends out a 5-unit full stop signal, starts an emergency stop process of the 5-unit emergency stop process, closes a guide vane and closes a cylinder valve.
When the factory building seepage drainage control cabinet simultaneously monitors ultrasonic level meters of a factory building seepage water collecting well, input type level meter signals and 1 liquid level switch signal at the bottom of a foundation grouting drainage gallery stair, the factory building seepage drainage control cabinet opens 5 sets of unit shutdown signals to a second unit LCU control cabinet, the second unit LCU control cabinet starts backup protection and then starts an emergency shutdown process, a guide vane is closed, and a cylinder valve is closed.
The tail water inlet manhole of the hydraulic turbine set is provided with a capacitance type liquid level switch, and the position of the capacitance type liquid level switch is the gallery wall side of the inlet manhole (downstream side) of each set. The signal is transmitted to the LCU control cabinet of the second unit, and simultaneously, the LCU control cabinet is connected to a computer monitoring system, so that an alarm is given to remind an operator to quickly find that water exists at the tail water inlet manhole (downstream side) of the 5 units.
The ultrasonic liquid level meters in the two protection systems adopt FMU30 ultrasonic liquid level meters of Germany E + H company, the drop-in liquid level meters adopt Holland KLAY drop-in liquid level meters, and the liquid level switches adopt CSL11 capacitive liquid level switches.
The factory building seepage water collecting well is provided with a high-definition camera for monitoring the water level of the water collecting well and the water level of the gallery, and the camera is connected into a computer monitoring system. And a water level annunciator in the protection system of the water turbine group layer and a water level annunciator in the protection system of the bottommost layer of the plant are connected to a computer monitoring system. And (4) manufacturing a monitoring picture of the flooded workshop on the upper computer of the computer monitoring system, and setting an alarm value according to the liquid level position. And the water flooded workshop liquid level and the switch signal are all sent to the centralized control center.
While the present invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a water logging prevention factory building protection system of hydroelectric power plant which characterized in that: comprises a protection system arranged on a water turbine group layer and a protection system arranged on the bottommost layer of a factory building,
the protection system of the water turbine set layer comprises a set top cover drainage control cabinet and a set LCU control cabinet, and is used for receiving signals of a water level annunciator of the water turbine set layer, a set waterwheel chamber is provided with the top cover water level annunciator, and when the water level annunciator of the set waterwheel chamber reaches an alarm value, an alarm is triggered;
the protection system of factory building bottom includes that the factory building overhauls drainage control cabinet and factory building seepage drainage control cabinet, both are used for receiving the signal of the water level signal ware of factory building bottom, both convey the signal of receiving to public LCU with public LCU communication respectively, 3 sets of water level signal ware should be no less than in the configuration of factory building bottom, 2 kinds of different principles are adopted at least to the water level signal ware, every set of water level signal ware homoenergetic sends alarm value signal and shut down value signal, 1 arbitrary set of water level signal ware reaches alarm value when the factory building bottom, trigger the warning, reach shut down value when 2 arbitrary sets of water level signal ware of factory building bottom, trigger the machine set emergency accident of whole units water machine of factory building and shut down.
2. The hydroelectric power plant flood-proof plant protection system of claim 1, wherein: the protection system of the hydraulic turbine group layer is specifically set as follows: set up in the hydraulic turbine top cap and put into formula level gauge, set up the ultrasonic wave level gauge in the hydraulic turbine speed regulator intermediate layer, both insert unit top cap drainage control cabinet, set up in the unit top cap drainage control cabinet and keep apart the spliter, transmit the signal of receiving to first unit LCU switch board simultaneously, set up capacitanc level switch in the waterwheel room, its signal that corresponds transmits to unit top cap drainage control cabinet and first unit LCU switch board simultaneously.
3. The hydroelectric power plant flood-proof plant protection system of claim 1, wherein: the protection system at the bottommost layer of the plant is specifically set as follows: an ultrasonic liquid level meter and two liquid level switches are arranged at the bottom of the foundation grouting drainage gallery stair, signals of the ultrasonic liquid level meter and one of the liquid level switches are sent to a workshop maintenance drainage control cabinet, and signals of the other liquid level switch are sent to a workshop leakage drainage control cabinet; the workshop seepage water collecting well is provided with an ultrasonic liquid level meter, a drop-in liquid level meter and a float switch, the ultrasonic liquid level meter and the drop-in liquid level signal are connected and sent to the workshop seepage and drainage control cabinet, and the float switch signal is connected and sent to the workshop maintenance and drainage control cabinet.
4. The hydroelectric power plant flooded-proof plant protection system of claim 1 or 2, wherein: a tail water inlet manhole of the hydraulic turbine set is provided with a capacitance type liquid level switch, and a signal of the capacitance type liquid level switch is connected to the LCU control cabinet of the hydraulic turbine set and is connected to a computer monitoring system.
5. The hydroelectric power plant flooded-proof plant protection system of claim 1 or 3, wherein: the factory building seepage water collecting well is provided with a camera for monitoring the water level of the water collecting well and the water level of the gallery, and the camera is connected into a computer monitoring system.
6. The flooded-proof plant protection system of the hydroelectric power plant of claim 1, wherein: and a water level annunciator in the protection system of the water turbine group layer and a water level annunciator in the protection system of the bottommost layer of the plant are both connected to a computer monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121446389.4U CN217501851U (en) | 2021-06-28 | 2021-06-28 | Water-flooding-proof workshop protection system for hydroelectric power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121446389.4U CN217501851U (en) | 2021-06-28 | 2021-06-28 | Water-flooding-proof workshop protection system for hydroelectric power plant |
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| CN217501851U true CN217501851U (en) | 2022-09-27 |
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| CN202121446389.4U Active CN217501851U (en) | 2021-06-28 | 2021-06-28 | Water-flooding-proof workshop protection system for hydroelectric power plant |
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