CN214225738U - Device for improving reliability of rapid door closing of water inlet of giant hydropower station - Google Patents
Device for improving reliability of rapid door closing of water inlet of giant hydropower station Download PDFInfo
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- CN214225738U CN214225738U CN202120599161.2U CN202120599161U CN214225738U CN 214225738 U CN214225738 U CN 214225738U CN 202120599161 U CN202120599161 U CN 202120599161U CN 214225738 U CN214225738 U CN 214225738U
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Abstract
The device for improving the reliability of the rapid door closing of the water inlet of the giant hydropower station comprises a dam crest control circuit and a rapid door closing control cabinet control circuit, wherein the dam crest control circuit is composed of a first control branch and a second control branch which are connected in parallel, the first control branch is composed of a unit LCU first control switch and a unit LCU first control relay K1 coil in series, the second control branch is composed of a simulation screen LCU control switch and a simulation screen LCU control relay K2 coil in series, and the dam crest control circuit is supplied with power by an uninterruptible power supply. Through setting up uninterrupted power source, prevent that the dam crest power from losing, set up two sets of unit LCU control signal and a set of analog screen LCU control signal simultaneously, through signal parallelly connected back control quick door closing solenoid valve YV1, arbitrary group switch combined floodgate all can start the quick door of closing, can not close the door when avoiding single switch to break down.
Description
Technical Field
The utility model relates to a generating set safety control field, especially a device of door reliability is closed fast to water inlet of improvement giant hydropower station.
Background
The quick door of the water inlet of the hydraulic turbine set is opened and closed through the crane door machine, the time consumption is long, the water flow can be cut off in time only through quick door closing in case of an accident, and the serious accidents such as water turbine runaway, water flooding plants and the like are avoided from being enlarged. The rapid closing capability of the rapid door is important to the safety of the hydroelectric power station, and therefore the reliable operation of the rapid door closing circuit under various risk conditions must be ensured.
At present, in order to ensure the normal action of a quick door closing control loop and improve the reliability of remote control of a quick door, a remote I/O (input/output) of a water inlet of a unit LCU (liquid Crystal Unit) provides a pair of quick door closing and opening contacts to access an AC220V re-acting loop; the LCU water inlet remote I/O provides a pair of quick closing and opening contacts to access the AC220V reset loop. The AC220V power supply is taken from the dam crest AC system, the power supply loop is single, when the dam crest DC power supply disappears, the door can not be closed quickly in a distant place. The water flow can not be cut off in time, which leads to serious accidents such as flooding the factory buildings.
Disclosure of Invention
The utility model aims to solve the technical problem that a device that improves huge power station water inlet quick door closing reliability is provided, the quick door closing action can not be accomplished when can preventing that the dam crest power from losing power.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the device for improving the reliability of the rapid door closing of the water inlet of the giant hydropower station comprises a dam crest control circuit and a rapid door closing control cabinet control circuit, wherein the dam crest control circuit consists of a first control branch and a second control branch which are connected in parallel, the first control branch consists of a unit LCU first control switch and a unit LCU first control relay K1 coil which are connected in series, the second control branch consists of a simulation screen LCU control switch and a simulation screen LCU control relay K2 coil which are connected in series, and the dam crest control circuit is supplied with power by an uninterruptible power supply;
the control circuit of the rapid door closing control cabinet is formed by connecting a third control branch, a fourth control branch and a fifth control branch in parallel, and the control circuit of the rapid door closing control cabinet is supplied with power by a control direct-current power supply;
the third control branch is formed by connecting a second control switch of the LCU of the unit and a second control relay K5 for quickly closing the door in series;
the fourth control branch is formed by connecting an auxiliary normally open switch of a first control relay K1 of the LCU of the unit and an auxiliary normally open switch of an LCU control relay K2 of the simulation screen in parallel and then connecting the auxiliary normally open switch of the LCU control relay K2 of the unit and the first control relays K3 and K4 of the quick door closing unit in parallel in series;
and the fifth control branch is formed by connecting auxiliary normally open switches of relays K3, K4 and K5 in parallel and then connecting the auxiliary normally open switches with a quick door closing electromagnetic valve YV1 in series.
The uninterruptible power supply comprises a first UPS module, a second UPS module, a bypass power supply module, a power output end, a first static transfer switch and a second static transfer switch, wherein the first UPS module and the second UPS module are connected with each other through the first static transfer switch and the second static transfer switch, the bypass power supply module is connected with the first UPS module and the second UPS module, the bypass power supply module is operated manually by an operator to prevent the first UPS module and the second UPS module from being failed simultaneously, and the first static transfer switch and the second static transfer switch are connected with the power output end.
The power output end provides power for the dam crest control circuit.
The utility model provides a pair of improve device of huge power station water inlet quick door closing reliability through setting up uninterrupted power source, prevents that the dam crest power from losing, sets up two sets of unit LCU control signal and a set of analog screen LCU control signal simultaneously, controls quick door closing solenoid valve YV1 after passing through the signal is parallelly connected, and arbitrary gang switch combined floodgate all can start quick door closing, can not close the door when avoiding single switch to break down.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the front circuit of the dam crest control circuit of the present invention;
fig. 2 is a schematic diagram of a control circuit of the rapid door closing control cabinet of the utility model;
fig. 3 is a schematic circuit diagram of an ups.
In the figure: the system comprises a first UPS module 1, a second UPS module 2, a bypass power supply module 3, a power output end 4, a first static transfer switch 5, a second static transfer switch 6, a first unit LCU control switch 7, an analog screen LCU control switch 8, a control direct-current power supply 9, a second unit LCU control switch 10, a dam crest control circuit 11, a quick door closing control cabinet control circuit 12, a first unit LCU control relay K1, an analog screen LCU control relay K2, first quick door closing control relays K3 and K4, a second quick door closing control relay K5 and a quick door closing electromagnetic valve YV 1.
Detailed Description
As shown in fig. 1-3, the device for improving the reliability of the rapid door closing of the water inlet of the giant hydropower station comprises a dam crest control circuit 11 and a rapid door closing control cabinet control circuit 12, wherein the dam crest control circuit 11 consists of a first control branch and a second control branch which are connected in parallel, the first control branch consists of a unit LCU first control switch 7 and a unit LCU first control relay K1 coil which are connected in series, the second control branch consists of a simulation screen LCU control switch 8 and a simulation screen LCU control relay K2 coil which are connected in series, and the dam crest control circuit 11 is supplied with power by an uninterruptible power supply;
the control circuit 12 of the rapid door closing control cabinet is formed by connecting a third control branch, a fourth control branch and a fifth control branch in parallel, and the control circuit 12 of the rapid door closing control cabinet is powered by a control direct-current power supply 9;
the third control branch is formed by connecting a set LCU second control switch 10 and a quick-closing second control relay K5 in series;
the fourth control branch is formed by connecting an auxiliary normally open switch of a first control relay K1 of the LCU of the unit and an auxiliary normally open switch of an LCU control relay K2 of the simulation screen in parallel and then connecting the auxiliary normally open switch of the LCU control relay K2 of the unit and the first control relays K3 and K4 of the quick door closing unit in parallel in series;
and the fifth control branch is formed by connecting auxiliary normally open switches of relays K3, K4 and K5 in parallel and then connecting the auxiliary normally open switches with a quick door closing electromagnetic valve YV1 in series.
A set of unit LCU control signals and a set of analog screen control signals can be output through the first control branch and the second control branch, the two sets of signals are connected in parallel and then control the first control relays K3 and K4 for the quick closing door in the fourth control branch, the double-signal output of the relays K3 and K4 can prevent one path of relay from being incapable of outputting actions when the relay fails, and meanwhile, the second control switch 10 for the unit LCU is arranged in the control cabinet for the quick closing door and can prevent the dam crest control circuit 11 from failing;
through uninterrupted power source's dual output, and contain the battery, even two way UPS power all lose, also can supply power through the battery, even the condition further worsens, two sets of UPS power and battery all lose efficacy, also can carry out the power through bypass power module 3, have reached the multiple insurance of dam crown power.
The uninterruptible power supply comprises a first UPS module 1, a second UPS module 2, a bypass power module 3, a power output end 4, a first static transfer switch 5 and a second static transfer switch 6, wherein the first UPS module 1 and the second UPS module 2 are connected with each other through the first static transfer switch 5 and the second static transfer switch 6, the bypass power module 3 is connected with the first UPS module 1 and the second UPS module 2, the bypass power module 3 is operated manually by an operator to prevent the first UPS module 1 and the second UPS module 2 from being failed simultaneously, and the first static transfer switch 5 and the second static transfer switch 6 are connected with the power output end 4.
The power output terminal 4 provides power for the dam crest control circuit 11.
Claims (3)
1. The device for improving the reliability of the rapid door closing of the water inlet of the giant hydropower station is characterized by comprising a dam crest control circuit (11) and a rapid door closing control cabinet control circuit (12), wherein the dam crest control circuit (11) consists of a first control branch and a second control branch which are connected in parallel, the first control branch consists of a unit LCU (lower control unit) first control switch (7) and a unit LCU first control relay K1 coil which are connected in series, the second control branch consists of an analog screen LCU control switch (8) and an analog screen LCU control relay K2 coil which are connected in series, and the dam crest control circuit (11) is supplied with a power supply by an uninterruptible power supply;
the control circuit (12) of the rapid door closing control cabinet is formed by connecting a third control branch, a fourth control branch and a fifth control branch in parallel, and the control circuit (12) of the rapid door closing control cabinet is powered by a control direct-current power supply (9);
the third control branch is formed by connecting a second control switch (10) of the LCU of the unit and a second control relay K5 for quickly closing the door in series;
the fourth control branch is formed by connecting an auxiliary normally open switch of a first control relay K1 of the LCU of the unit and an auxiliary normally open switch of an LCU control relay K2 of the simulation screen in parallel and then connecting the auxiliary normally open switch of the LCU control relay K2 of the unit and the first control relays K3 and K4 of the quick door closing unit in parallel in series;
and the fifth control branch is formed by connecting auxiliary normally open switches of relays K3, K4 and K5 in parallel and then connecting the auxiliary normally open switches with a quick door closing electromagnetic valve YV1 in series.
2. The device of claim 1 for improving the reliability of rapid door closing of the water inlet of the giant hydropower station, which is characterized in that: the UPS comprises a first UPS module (1), a second UPS module (2), a bypass power module (3), a power output end (4), a first static transfer switch (5) and a second static transfer switch (6), wherein the first UPS module (1) and the second UPS module (2) are connected with each other through the first static transfer switch (5) and the second static transfer switch (6), the bypass power module (3) is connected with the first UPS module (1) and the second UPS module (2), the bypass power module (3) is operated manually by an operator to prevent the first UPS module (1) and the second UPS module (2) from failing simultaneously, and the first static transfer switch (5) and the second static transfer switch (6) are connected with the power output end (4).
3. The device of claim 2 for improving the reliability of rapid door closing of the water inlet of the giant hydropower station, which is characterized in that: and the power output end (4) provides power for the dam crest control circuit (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120599161.2U CN214225738U (en) | 2021-03-24 | 2021-03-24 | Device for improving reliability of rapid door closing of water inlet of giant hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120599161.2U CN214225738U (en) | 2021-03-24 | 2021-03-24 | Device for improving reliability of rapid door closing of water inlet of giant hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214225738U true CN214225738U (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120599161.2U Active CN214225738U (en) | 2021-03-24 | 2021-03-24 | Device for improving reliability of rapid door closing of water inlet of giant hydropower station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214225738U (en) |
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2021
- 2021-03-24 CN CN202120599161.2U patent/CN214225738U/en active Active
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