Hydropower plant anti-flooding early warning system and method

Abstract

An anti-flooding early warning system for a hydropower station workshop comprises a water invasion alarm device, an infrared mobile alarm device and a background control system. A plurality of water invasion alarm devices are installed on skirting lines on the lower portion of the inner wall of the plant, when a pipeline in the plant is broken and water is accumulated on the ground, the accumulated water enters a shell and makes contact with an electrode column, an alarm of a background control system is switched on, and a water accumulation alarm is given out, and a plurality of infrared mobile alarm devices are symmetrically installed on the upper portion of the inner wall of the plant. The infrared emitter and the infrared receiver of every two infrared mobile alarm devices correspond to each other and move synchronously, and when the top of the plant leaks water to form a rain curtain to cut infrared rays emitted by the infrared emitters, the alarm of the background control system gives a water leakage alarm; the plant is effectively prevented from being flooded due to pipeline breakage or water leakage at the top of the plant.

Description

Technical Field

[0001] The invention belongs to the technical field of preventing water accumulation and leakage in a hydropower station plant, and relates to a hydropower station plant flooding warning system and method. Background Art

[0002] Most of the power plant buildings are underground structures. In order to avoid being heavy or damaging the top structure, this type of structure usually has a high internal clearance. The unit equipment is located in the foundation pit of the plant, which is high above the top of the plant. In the event of heavy rain or leakage, it is easy to cause water leakage inside the plant, such as leakage on the top of the plant, water seepage on the wall, etc., which may flood the plant or damage the equipment. In addition, since there are many water pipes inside the hydropower station, when there is a leak, the pipe leak will form water on the ground, and eventually overflow the skirting around the wall, causing damage to the equipment in the plant. At present, the unit equipment is controlled by the background control system, but it cannot respond to the leakage, seepage and water accumulation inside the plant in real time. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a hydropower station plant building flooding prevention early warning system and method. By designing two different alarm modes, an alarm can be issued in time regardless of water accumulation on the ground or water leakage on the top of the plant building, and the accumulated water and water leakage can be dealt with in time to prevent the plant building and equipment from being flooded.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hydropower station plant flood prevention early warning system, which includes a water intrusion alarm device, an infrared mobile alarm device and a background control system; two electrode columns arranged at intervals from each other are arranged in the shell of the water intrusion alarm device; every two infrared mobile alarm devices form a group and are parallel and symmetrical to each other, one of the infrared mobile alarm devices is provided with an infrared transmitter, and the other infrared mobile alarm device is provided with an infrared receiver, and the infrared transmitter and the infrared receiver are symmetrical to each other and move synchronously in parallel; the electrode columns, the infrared transmitter and the infrared receiver are all electrically connected to the alarm of the background control system; when the two electrode columns are turned on to the alarm or the infrared rays emitted by the infrared transmitter cannot be received by the infrared receiver, the alarm sounds an alarm.

[0005] The water intrusion alarm device includes a shell, a fixing plate and an electrode column; the fixing plate is located in the hollow shell and connected and fixed thereto, two electrode columns pass through the fixing plate and are threadedly engaged therewith, and a water inlet hole is arranged on the lower side of the shell and communicates with the shell.

[0006] A sponge is arranged at the lower part of the fixing plate, and the electrode column contacts the sponge.

[0007] A pushing plate is arranged between the fixing plate and the sponge body, and the pushing column is connected to the pushing plate and slidably matched with the fixing plate.

[0008] The electrode posts and the pushing posts correspond one to one with the through holes on the upper side of the shell.

[0009] The infrared mobile alarm device includes a slide rail, a slider, a connecting rod mechanism, a motor, an infrared transmitter and an infrared receiver; the slider slides with the slide rail, one end of the connecting rod mechanism is movably connected to the slider, and the other end of the connecting rod mechanism is connected to the output shaft of the motor; one of the infrared transmitter or the infrared receiver is connected to the slider.

[0010] The connecting rod mechanism includes a second connecting rod, a third connecting rod, a fourth connecting rod and a fifth connecting rod connected in sequence by a first connecting rod, the first connecting rod is connected to a slider, and the fifth connecting rod is connected to a motor; the nodes between the first connecting rod and the second connecting rod, the third connecting rod and the fourth connecting rod, and the fourth connecting rod and the fifth connecting rod are active nodes, and the node between the second connecting rod and the third connecting rod is a fixed node.

[0011] The motor is electrically connected to the background control system; the motor drives the connecting rod mechanism to drive the slide block to move back and forth along the slide rail.

[0012] The alarm method of the hydropower plant building flood prevention early warning system as described above comprises the following steps: S1, install water intrusion alarm devices. Multiple water intrusion alarm devices are uniformly installed at the same height of the factory baseboards, with the water inlet holes close to the factory floor; S2, installing the infrared mobile alarm device, horizontally installing the slide rails of the infrared mobile alarm device around the factory wall, fixing the node between the second link and the third link of the linkage mechanism on the wall, and fixing the base of the motor on the wall; in this step, installing an infrared transmitter and an infrared receiver on each two corresponding sliders respectively; S3, start, start the background control system, the motor drives the connecting rod mechanism to drive the slider to move back and forth along the slide rail, the infrared transmitter transmits infrared rays which are received by the infrared receiver, and the infrared receiver sends the received infrared signal to the background control system; in this step, the alarm does not sound an alarm; S4, ground water accumulation alarm. When water accumulates on the ground due to a pipe leak in the plant, the accumulated water enters the shell from the water inlet hole and contacts the electrode column, turning on the alarm of the background control system, which then issues a water accumulation alarm. S5, top water leakage alarm. When water leakage occurs on the top of the factory building, the rain curtain formed by the leakage cuts the infrared rays emitted by the infrared transmitter. The background control system cannot receive the infrared signal and the alarm issues a water leakage alarm.

[0013] As described above, in the alarm method of the hydropower station plant flood prevention early warning system, when the water accumulation alarm sounds, the plant floor is drained and cleaned. After cleaning, a downward pushing force is applied to the pushing column, and the sponge is squeezed by the pushing plate. The accumulated water absorbed by the sponge is discharged from the water inlet hole, thereby resetting the water intrusion alarm device to avoid false alarms.

[0014] The main beneficial effects of the present invention are: When a pipe in the factory ruptures and causes water to accumulate on the ground, the accumulated water enters the shell and contacts the electrode column, which then switches on the alarm of the background control system and sends out a water accumulation alarm.

[0015] When water leaks from the roof of the factory building and forms a rain curtain that cuts the infrared rays emitted by the infrared transmitter, the alarm of the background control system sends out a water leakage alarm, effectively avoiding flooding of the factory building due to pipe rupture or water leakage from the roof of the factory building.

[0016] When the accumulated water in the factory building has been cleared, the accumulated water absorbed by the sponge has not yet been discharged. At this time, the accumulated water in the sponge can be squeezed out by pushing the push plate down to avoid false alarms. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a front view schematic diagram of the water intrusion alarm device of the present invention.

[0019] Figure 2 for Figure 1 Schematic top view of .

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional view at AA.

[0021] Figure 4 It is a front view schematic diagram of the infrared mobile alarm device of the present invention.

[0022] Figure 5 This is a schematic diagram of the water intrusion alarm device and the infrared motion alarm device of the present invention being installed on a wall.

[0023] Figure 6 This is a schematic diagram of the infrared motion alarm device of the present invention being installed on two corresponding walls.

[0024] In the figure: housing 11; fixing plate 12; electrode column 13; water inlet hole 14; sponge 15; push plate 16; push column 17; through hole 18; slide rail 21; slider 22; connecting rod mechanism 23; motor 24; infrared transmitter 25; infrared receiver 26. DETAILED DESCRIPTION

[0025] like Figure 1 to Figure 6A water flooding warning system for a hydropower station building is disclosed, which comprises a water intrusion alarm device, an infrared mobile alarm device and a background control system; two electrode columns 13 arranged at intervals from each other are arranged in a housing 11 of the water intrusion alarm device; each two infrared mobile alarm devices form a group and are parallel and symmetrical to each other, one of the infrared mobile alarm devices is provided with an infrared transmitter 25, and the other infrared mobile alarm device is provided with an infrared receiver 26, the infrared transmitter 25 and the infrared receiver 26 are symmetrical to each other and move synchronously and in parallel; the electrode columns 13, the infrared transmitter 25 and the infrared receiver 26 are all electrically connected to the alarm of the background control system; when the two electrode columns 13 are turned on to the alarm or the infrared rays emitted by the infrared transmitter 25 cannot be received by the infrared receiver 26, the alarm sounds an alarm. A plurality of water intrusion alarm devices are installed on the skirting at the lower part of the inner wall of the factory building. When a pipe in the factory building ruptures and causes water to accumulate on the ground, the accumulated water enters the shell 11 and contacts the electrode column 13 to conduct the alarm of the background control system to issue a water accumulation alarm. A plurality of infrared mobile alarm devices are symmetrically installed on the upper part of the inner wall of the factory building. The infrared transmitter 25 and the infrared receiver 26 of every two infrared mobile alarm devices correspond to each other and move synchronously. When water leaks from the top of the factory building to form a rain curtain that cuts the infrared rays emitted by the infrared transmitter 25, the alarm of the background control system issues a water leakage alarm, which effectively avoids the factory building being flooded due to pipe rupture or water leakage from the top of the factory building.

[0026] In a preferred solution, the water intrusion alarm device includes a shell 11, a fixing plate 12 and an electrode column 13; the fixing plate 12 is located in the hollow shell 11 and connected and fixed thereto, two electrode columns 13 pass through the fixing plate 12 and are threadedly matched therewith, and a water inlet 14 is arranged on the lower side of the shell 11 to communicate with the shell 11. When in use, the shell 11 is installed on the skirting at the lower part of the factory wall. Since the skirting is close to the ground, when the pipe inside the factory is broken and causes water accumulation on the ground, the accumulated water enters the shell 11 from the water inlet 14 and contacts the two electrode columns 13, and the alarm of the conduction station control system issues a water accumulation alarm.

[0027] In a preferred solution, a sponge 15 is disposed at the lower part of the fixing plate 12, and the electrode column 13 is in contact with the sponge. When in use, the sponge 15 is disposed in the space at the lower part of the fixing plate 12, and when the accumulated water enters the shell 11, it forms a conductive medium together with the sponge, so that the two electrode columns 13 and the alarm of the background control system form a loop, and the alarm is turned on, thereby overcoming the situation that the height of the two electrode columns 13 is inconsistent due to the tilt of the shell 11 during installation, resulting in the water level error in the shell 11 causing no alarm.

[0028] In a preferred embodiment, a push plate 16 is provided between the fixed plate 12 and the sponge 15, and a push column 17 is connected to the push plate 16 and slidably cooperates with the fixed plate 12. When in use, after the accumulated water in the factory is cleaned up, the accumulated water absorbed by the sponge 15 has not been discharged. At this time, the accumulated water in the sponge 15 is squeezed out by pushing down the push plate 16 to avoid false alarms.

[0029] In a preferred embodiment, the electrode column 13 and the push column 17 correspond to the through hole 18 on the upper side of the housing 11. During installation, the height of the electrode column 13 can be adjusted by inserting an adjustment tool into the through hole 18; a pressing tool can also be used to insert a pressure into the through hole 18 to apply pressure to the push column 17 to compress the sponge 15 and squeeze the accumulated water in the sponge 15. After the pressure is removed, the sponge 15 pushes the push plate 16 to reset it.

[0030] In the preferred solution, the infrared mobile alarm device includes a slide rail 21, a slider 22, a connecting rod mechanism 23, a motor 24, an infrared transmitter 25 and an infrared receiver 26; the slider 22 is slidably matched with the slide rail 21, one end of the connecting rod mechanism 23 is movably connected with the slider 22, and the other end of the connecting rod mechanism 23 is connected to the output shaft of the motor 24; one of the infrared transmitter 25 or the infrared receiver 26 is connected to the slider 22. During installation, every two infrared mobile alarm devices form a group and are symmetrically installed in pairs. The infrared transmitter 25 and the infrared receiver 26 correspond to each other. The infrared transmitter 25 emits infrared rays, and the infrared receiver 26 receives infrared signals and sends them to the background control system. The infrared receiver 26 does not alarm when receiving infrared signals.

[0031] In a preferred solution, the connecting rod mechanism 23 includes a second connecting rod, a third connecting rod, a fourth connecting rod and a fifth connecting rod connected in sequence by the first connecting rod, the first connecting rod is connected to the slider 22, and the fifth connecting rod is connected to the motor 24; the nodes between the first connecting rod and the second connecting rod, the third connecting rod and the fourth connecting rod, and the fourth connecting rod and the fifth connecting rod are active nodes, and the nodes between the second connecting rod and the third connecting rod are fixed nodes. When in use, since the nodes between the second connecting rod and the third connecting rod are fixed nodes, the nodes of the remaining connecting rods are all active nodes, so that when the motor 24 drives the fifth connecting rod to rotate, the remaining connecting rods form an active connection for relative motion, and push the slider 22 to make reciprocating linear motion in the slide rail 21.

[0032] In a preferred solution, the motor 24 is electrically connected to the background control system; the motor 24 drives the connecting rod mechanism 23 to drive the slider 22 to move back and forth along the slide rail 21. When in use, the background control system controls the synchronous start and stop of the two motors 24 of each group of infrared mobile alarm devices, thereby ensuring that the infrared transmitter 25 and the infrared receiver 26 of the two infrared mobile alarm devices of each group are synchronously operated, and accordingly, the infrared receiver 26 is always under the irradiation of the infrared rays emitted by the infrared receiver 26.

[0033] In a preferred solution, the alarm method of the hydropower plant building flood prevention early warning system as described above comprises the following steps: S1, install water intrusion alarm devices, and install multiple water intrusion alarm devices at the same height of the factory baseboard, with the water inlet 14 close to the factory floor; S2, install the infrared mobile alarm device, horizontally install the slide rail 21 of the infrared mobile alarm device around the wall of the factory, fix the node between the second link and the third link of the link mechanism 23 on the wall, and also fix the base of the motor 24 on the wall; in this step, an infrared transmitter 25 and an infrared receiver 26 are respectively installed on every two corresponding sliders 22; S3, start, start the background control system, the motor 24 drives the connecting rod mechanism 23 to drive the slider 22 to move back and forth along the slide rail 21, the infrared transmitter 25 transmits infrared rays which are received by the infrared receiver 26, and the infrared receiver 26 sends the received infrared signals to the background control system; in this step, the alarm does not sound an alarm; S4, ground water accumulation alarm. When water accumulates on the ground due to a pipe leak in the factory building, the accumulated water enters the shell 11 from the water inlet 14 and contacts the electrode column 13, turning on the alarm of the background control system, which issues a water accumulation alarm. S5, top water leakage alarm. When water leakage occurs on the top of the plant building, the rain curtain formed by the water leakage cuts the infrared rays emitted by the infrared transmitter 25. The background control system cannot receive the infrared signal, and the alarm sends out a water leakage alarm.

[0034] In a preferred solution, as described above, in the alarm method of the hydropower station plant flood prevention early warning system, when the water accumulation alarm is sounded, the plant floor is drained and cleaned. After cleaning, a downward pushing force is applied to the pushing column 17, and the pushing plate 16 is used to squeeze the sponge 15. The accumulated water absorbed by the sponge 15 is discharged from the water inlet 14, thereby resetting the water intrusion alarm device to avoid false alarms.

[0035] In the above method, no matter the factory floor is flooded due to a ruptured pipe in the factory, or there is a leak on the roof of the factory, an alarm can be issued in time, and the accumulated water and leak can be discovered and dealt with in time, thereby effectively avoiding the factory being flooded and damaging equipment.

[0036] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A water flooding warning system for a hydropower plant, characterized by: It comprises a water intrusion alarm device, an infrared mobile alarm device and a background control system; two electrode columns (13) arranged at intervals from each other are arranged in a shell (11) of the water intrusion alarm device; each two infrared mobile alarm devices form a group and are parallel and symmetrical to each other, one of the infrared mobile alarm devices is provided with an infrared transmitter (25), and the other infrared mobile alarm device is provided with an infrared receiver (26); the infrared transmitter (25) and the infrared receiver (26) are symmetrical to each other and move synchronously and in parallel; the electrode columns (13), the infrared transmitter (25) and the infrared receiver (26) are all electrically connected to the alarm of the background control system; when the two electrode columns (13) are conducting to the alarm or the infrared rays emitted by the infrared transmitter (25) cannot be received by the infrared receiver (26), the alarm sends out an alarm.

2. The hydropower plant building flooding prevention early warning system according to claim 1 is characterized by: The water intrusion alarm device comprises a housing (11), a fixing plate (12) and an electrode column (13); the fixing plate (12) is located in the hollow housing (11) and is connected and fixed thereto; the two electrode columns (13) pass through the fixing plate (12) and are threadably engaged with the fixing plate (12); and a water inlet hole (14) is provided on the lower side of the housing (11) and is in communication with the housing (11).

3. The hydropower plant building flooding prevention early warning system according to claim 2 is characterized by: A sponge (15) is disposed at the lower portion of the fixing plate (12), and the electrode column (13) is in contact with the sponge.

4. The hydropower plant building flooding prevention early warning system according to claim 3 is characterized by: A push plate (16) is arranged between the fixed plate (12) and the sponge body (15), and a push column (17) is connected to the push plate (16) and is slidably matched with the fixed plate (12).

5. The hydropower plant building flooding prevention early warning system according to claim 4 is characterized by: The electrode columns (13) and the pushing columns (17) correspond one to one with the through holes (18) on the upper side of the shell (11).

6. The hydropower plant building flooding prevention early warning system according to claim 1 is characterized by: The infrared mobile alarm device comprises a slide rail (21), a slider (22), a connecting rod mechanism (23), a motor (24), an infrared transmitter (25) and an infrared receiver (26); the slider (22) is slidably matched with the slide rail (21); one end of the connecting rod mechanism (23) is movably connected to the slider (22); and the other end of the connecting rod mechanism (23) is connected to the output shaft of the motor (24); and one of the infrared transmitter (25) and the infrared receiver (26) is connected to the slider (22).

7. The hydropower plant building flooding warning system according to claim 6 is characterized by: The connecting rod mechanism (23) comprises a second connecting rod, a third connecting rod, a fourth connecting rod and a fifth connecting rod connected in sequence by a first connecting rod, the first connecting rod is connected to a slider (22), and the fifth connecting rod is connected to a motor (24); the nodes between the first connecting rod and the second connecting rod, the third connecting rod and the fourth connecting rod, and the fourth connecting rod and the fifth connecting rod are movable nodes, and the node between the second connecting rod and the third connecting rod is a fixed node.

8. The hydropower plant building flooding warning system according to claim 6 is characterized by: The motor (24) is electrically connected to the background control system; the motor (24) drives the connecting rod mechanism (23) to drive the slider (22) to move back and forth along the slide rail (21).

9. The alarm method of the hydropower plant building flood prevention early warning system according to any one of claims 1 to 8, characterized in that: The steps include: S1, installing a water intrusion alarm device, installing multiple water intrusion alarm devices at the same height of the factory baseboard, with the water inlet (14) close to the factory floor; S2, installing the infrared mobile alarm device, horizontally installing the slide rail (21) of the infrared mobile alarm device around the wall of the factory building, fixing the node between the second link and the third link of the link mechanism (23) on the wall, and fixing the base of the motor (24) on the wall; in this step, installing an infrared transmitter (25) and an infrared receiver (26) on each two corresponding sliders (22) respectively; S3, start, start the background control system, the motor (24) drives the connecting rod mechanism (23) to drive the slider (22) to move back and forth along the slide rail (21), the infrared transmitter (25) emits infrared rays which are received by the infrared receiver (26), and the infrared receiver (26) sends the received infrared signal to the background control system; in this step, the alarm does not sound an alarm; S4, ground water accumulation alarm. When water accumulates on the ground of the factory due to a water leak in the pipeline in the factory, the accumulated water enters the inside of the shell (11) from the water inlet hole (14) of the shell (11) and contacts the electrode column (13), thereby connecting to the alarm of the background control system, and the alarm issues a water accumulation alarm. S5, roof water leakage alarm. When water leakage occurs on the roof of the factory building, the rain curtain formed by the water leakage cuts the infrared rays emitted by the infrared transmitter (25). The background control system cannot receive the infrared signal, and the alarm sends out a water leakage alarm.

10. The alarm method of the hydropower plant building flood prevention early warning system according to claim 9 is characterized by: When the water accumulation alarm is triggered, the factory floor is drained and cleaned. After the cleaning is completed, a downward pushing force is applied to the push column (17), and the sponge (15) is squeezed by the push plate (16). The accumulated water absorbed by the sponge (15) is discharged from the water inlet hole (14), thereby resetting the water intrusion alarm device to avoid false alarms.

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