CN102767225B - Automatic water-discharging device for power-distributing room - Google Patents

Abstract

The invention discloses an automatic drainage device for a power distribution room. A water storage tank is excavated at the bottom of the cable ditch of the power distribution room. A submersible pump is placed in the water storage tank, and the power supply of the submersible pump is connected to a 40A AC contactor contact system. , the bottom of the cable trench is also excavated with a measuring water level storage tank, a water level controller is installed in the measuring water level storage tank, the waterproof button liquid level normally open switch in the water level controller is connected to the 40A AC contactor coil, The water level controller detects the water level in the power distribution room. When the measured water level in the storage tank is below the top of the storage tank, the water level controller controls the opening of the submersible pump through the 40A AC contactor. At the top of the tank, the water level controller controls the submersible pump to shut down through the 40A AC contactor. The invention controls the opening and closing of the submersible pump through a water level controller installed in the water level measuring tank, can automatically drain water according to the change of the water level in the power distribution room, and has high safety and reliability.

Description

An automatic drainage device for power distribution room

technical field

The invention relates to a drainage device for a power distribution room.

Background technique

Traditional power distribution room drainage devices are outdated, and generally require manual control of drainage, which is not safe and reliable enough.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automatic drainage device for a power distribution room, which can automatically drain water according to the change of the water level in the power distribution room, and has high safety and reliability.

In order to solve the above technical problems, the present invention adopts the following technical solutions: an automatic drainage device for a power distribution room, a low-voltage power distribution cabinet is installed in the power distribution room, and a 40A AC contactor and at least a 250A AC contactor are installed on the upper part of the low-voltage power distribution cabinet. AC contactor, the lower part of the low-voltage power distribution cabinet is equipped with an RTO fuse, and the RTO fuse is connected to the low-voltage outgoing cable. The power distribution room has a cable trench excavated under the low-voltage power distribution cabinet. A water storage tank is dug, and a submersible pump is placed in the water storage tank. The power supply of the submersible pump is connected to the 40A AC contactor contact system. A water level storage tank is excavated at the bottom of the cable trench. The water level measurement tank is A water level controller is installed in the water tank. The waterproof button liquid level normally open switch in the water level controller is connected to the 40A AC contactor coil. The water level controller detects the water level in the power distribution room. When measuring the water level in the water tank The water level controller controls the submersible pump to turn on through the 40A AC contactor when it is below the top of the water tank. When the water level in the water tank is lower than the top of the water tank, the water level controller controls the submersible pump to turn off through the 40A AC contactor.

Preferably, the water level controller includes a columnar frame, the bottom of the frame communicates with the water tank for measuring water level, a magnetic float is arranged in the frame, and a waterproof button liquid level normally open switch is installed in the middle of the frame It is connected with the 40A AC contactor coil, and a button device that triggers the normally open switch of the waterproof button liquid level is installed on the magnetic float. The float moves up and drives the button device to touch the normally open switch of the liquid level, so that the normally open switch of the liquid level is closed, the coil of the 40A AC contactor is energized, the moving contact of the 40A AC contactor is closed, and the submersible pump starts to work; when the water level drops and the button device is out of the liquid When the level normally open switch is turned on, the liquid level normally open switch is automatically separated and the submersible pump is turned off.

Preferably, the frame body is also equipped with a waterproof button liquid level normally closed switch above the waterproof button liquid level normally closed switch, and the waterproof button liquid level normally closed switch is connected in series with the 250A AC contactor coil. When the water level in the room rises to 100mm from the connection between the lower end of the RTO fuse and the low-voltage outlet cable, the magnetic float in the water level controller moves up and drives the button device to touch the waterproof button. The liquid level normally closed switch separates it, and the 250A AC contactor coil is powered off The low-voltage outgoing cable stops power supply. When the water level drops, the magnetic float in the water level controller moves down, the waterproof button liquid level normally closed switch resets, the 250A AC contactor closes, and the low-voltage outgoing cable resumes power supply.

Preferably, the frame body is a square frame, and the bottom of the frame body communicates with the water level measuring tank through a mesh structure.

Preferably, the button device includes an upper button device and a lower button device disposed below the upper button device, and the upper button device and the lower button device are fixedly connected by a connecting piece of the button device.

Preferably, the magnetic float includes a spherical float body, the upper part of the float body is fixedly connected with a cylindrical fixed column, and the outer peripheral side of the fixed column is fixedly connected with a cylindrical magnetic float connecting piece, and the magnetic float connecting piece is connected with the upper The button device and the lower button device are fixedly connected.

Preferably, the switch contacts of the upper button device and the lower button device are both oval.

The invention controls the opening and closing of the submersible pump through a water level controller installed in the water level measuring tank, can automatically drain water according to the water level change in the power distribution room, and has high safety and reliability. Moreover, when the submersible pump fails, the water level controller controls the 250A AC contactor coil to interrupt the power supply of the low-voltage outgoing cable, which further improves safety and reliability.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Figure 1 is a schematic diagram of a low-voltage power distribution cabinet;

Figure 2 is a schematic diagram of the structure of the water level controller.

Detailed ways

In conjunction with Fig. 1 and Fig. 2, the embodiment of the automatic drainage device of the power distribution room of the present invention is specifically described. A low-voltage power distribution cabinet 1 is installed in the power distribution room, and a 40A AC contactor 11 and at least one 250A AC contactor 11 are installed on the upper part of the low-voltage power distribution cabinet. AC contactor 12, RTO fuse 13 is installed at the lower part of the low-voltage power distribution cabinet, and the RTO fuse is connected to the low-voltage outgoing cable. There is a water storage tank 21, a submersible pump 22 is placed in the described water storage tank, the power supply of the submersible pump is connected to the 40A AC contactor contact system, and a measurement water level storage tank 23 is excavated at the bottom of the cable trench. A water level controller 3 is installed in the water level storage tank. The waterproof button liquid level normally open switch 31 in the water level controller is connected with the 40A AC contactor coil. The water level controller detects the water level in the power distribution room. When measuring the water level When the water level in the water tank is below the top of the water tank, the water level controller controls the submersible pump to turn on through the 40A AC contactor. When the measured water level in the water tank is lower than the top of the water tank, the water level controller controls the submersible pump to turn off through the 40A AC contactor. The water level controller includes a columnar frame 33, the bottom of the frame communicates with the measuring water level storage tank, a magnetic float 4 is arranged in the frame, and a waterproof button liquid level normally open switch 31 is installed in the middle of the frame , the waterproof button liquid level normally open switch is connected to the 40A AC contactor coil, and a button device that triggers the waterproof button liquid level normally open switch is installed on the magnetic float. When the water level in the tank is below the top of the tank, the magnetic float moves up and drives the button device to touch the normally open switch of the liquid level, so that the normally open switch of the liquid level is closed, the coil of the 40A AC contactor is energized, the moving contact of the 40A AC contactor is closed, and the submersible pump starts Work; when the water level drops and the button device is separated from the liquid level normally open switch, the liquid level normally open switch is automatically separated, and the submersible pump is turned off. The frame body is also equipped with a waterproof button liquid level normally closed switch 32 above the waterproof button liquid level normally closed switch. The waterproof button liquid level normally closed switch is connected in series with the 250A AC contactor coil. When the water level rises to 100mm from the connection between the lower end of the RTO fuse and the low-voltage outgoing cable, the magnetic float in the water level controller moves up to drive the button device to touch the waterproof button. Stop the power supply, when the water level drops, the magnetic float in the water level controller moves down, the waterproof button liquid level normally closed switch resets, the 250A AC contactor closes, and the low-voltage outgoing cable resumes power supply.

The frame body is a square frame, and the bottom of the frame body communicates with the measuring water level storage tank through a mesh structure. The button device includes an upper button device 42 and a lower button device 41 located below the upper button device, and the upper button device and the lower button device are fixedly connected by a button device connecting piece 44 . The magnetic float includes a spherical float body, the upper part of the float body is fixedly connected with a cylindrical fixed column 43, and the outer peripheral side of the fixed column is fixedly connected with a cylindrical magnetic float connecting piece 45, and the magnetic float connecting piece is connected with the upper button at the same time. The device and the lower button device are fixedly connected. The switch contacts of the upper button device and the lower button device are both oval.

The low-voltage power distribution cabinet includes two sets of low-voltage outlet units. Each set of low-voltage outlet units is composed of 250A AC contactors and RTO fuses connected together. The outlet ends of each set of low-voltage outlet units are connected to user cables. Composed of an AC contactor and an RTO fuse, the submersible pump is connected with a submersible pump fuse 14.

Combined with Figure 1 to illustrate the working principle:

1. Water level controller: Install magnetic float, lower button device, button device connecting piece, magnetic float connecting piece, upper button device, waterproof button liquid level normally closed switch, waterproof button liquid level normally open switch in a 300×300 square frame , The circular built-in fixed column forms a water level controller;

2. Mobile controller: a magnetic float with a diameter of 280mm, a lower button device, a button device connecting piece, a magnetic float connecting piece, and an upper button device form a device that can move up and down according to the water level.

3. Circular built-in fixed column: a circular built-in fixed column with a diameter of 50mm is installed on the water level controller, the purpose is to control the magnetic float, the upper (lower) position button device, etc. to not deviate from the center position when moving up and down. The bottom of the water level controller is surrounded by net-shaped water inlets to prevent garbage and small animals from entering.

4. Up (down) button device: designed as an elliptical device, in order to ensure that the water level controller can be pressed in place when it is in contact with the normally closed (open) switch of the waterproof button liquid level during the up and down movement process, ensuring good contact .

5. Button device connecting piece: When the liquid level normally open switch touches the upper button device, the water level continues to move upwards, so that it can keep pressing the liquid level normally open switch for a long time without releasing it.

6. Magnetic float connecting piece: the connecting piece is fixedly connected with the magnetic float, and when the water level moves up and down, the upper (lower) button device and the button device connecting piece can be pushed synchronously.

7. Liquid level normally open switch: This switch is connected to the 40A AC contactor coil. When the water level controller rises according to the water level, the magnetic float pushes the mobile controller to move up to the liquid level normally open switch due to the buoyancy of the water, making it closed, 40A The coil of the AC contactor is energized, the moving contactor of the contactor is closed, and the submersible pump starts to work. If the water level drops, the mobile controller moves below the normally open switch of the liquid level, the switch is disconnected, the coil of the 40A AC contactor is disconnected, and the contactor moves. The contacts are separated and the submersible pump stops working.

8. Waterproof button liquid level normally closed switch: This group of switches is connected in series with multiple sets of 250A AC contactor coils, normally closed in normal working environment, the moving contact of the 250A AC contactor is closed, and the low-voltage side users normally supply power. When the water level rises and the displacement of the submersible pump still cannot meet the water intake of the power distribution room, the mobile controller will continue to rise, and when it touches the normally closed switch of the waterproof button liquid level, the switch will perform a separation action, so that multiple groups connected in series The coil of the 250A AC contactor is powered off, the moving contact of the contactor is separated, and the lower part of the contactor stops supplying power. Ensure that the lower part of the fuse is short-circuited between phases due to water ingress. If the water level drops during the working process of the submersible pump, after the mobile controller leaves the liquid level normally closed switch of the waterproof button, the switch is closed, multiple sets of 250A AC contactor coils are energized, the contactor moving contacts are closed, and the lower part resumes power supply.

Combined with Figure 2 to illustrate the working principle:

Including water level controller, 40A AC contactor, at least one set of 250A AC contactor, single-phase submersible pump and RTO fuse to form the automatic drainage device of the power distribution room, the difference between the right and left sides of the 500mm cable trench in the power distribution room is 10° The slope is constructed, and a 600mm pond is dug below the cable trench of the power distribution room, which is 50mm close to the left wall. The water accumulated in the cable trench can flow into the pond through the slope. Anti-garbage drop nets are installed on the surface of the water tank and cable trench. The power supply of the submersible pump is connected through the 40A AC contactor contact system. Dig 400mm below the left side of the electric cabinet to measure the water level storage tank, and install a water level controller 100mm away from the bottom of the water level storage tank. The controller is square and fixed with the low-voltage power distribution cabinet with bolts; The built-in mobile controller of the water level controller rises to the same level as the water tank and the cable trench according to the water level. When the moving contact of the device is closed, the submersible pump starts to work; when the water level drops below the normally open switch of the liquid level, the switch is automatically separated, and the submersible pump stops working. If the water level continues to rise to 100mm from the connection between the lower end of the RTO fuse and the low-voltage outlet cable, the built-in float of the water level controller moves up to touch the waterproof button and the liquid level normally closed switch, and separates it, and multiple sets of 250A contactors are connected in series through the water level controller The coil is powered off to separate its action, and the lower part of the 250A AC contactor stops power supply. When the water level drops, the waterproof button liquid level normally closed switch moves and resets according to the built-in float of the water level controller, the 250A AC contactor closes, and the low-voltage outlet resumes power supply .

Claims (6)

1. a power distribution room self-draining arrangement, low-voltage distribution cabinet (1) is installed in power distribution room, described low-voltage distribution cabinet top is equipped with a 40A A.C. contactor (11) and at least one 250A A.C. contactor (12), described low-voltage distribution cabinet bottom is equipped with RTO fuse (13), the RTO fuse connects the low-pressure line-outgoing cable, power distribution room excavates cable trench (2) below low-voltage distribution cabinet, it is characterized in that: described cable trench bottom excavation has a water storage tank (21), place a submersible pump (22) in described water storage tank, described submersible pump power supply is connected with 40A AC contactor touch head system, one measurement water level water storage tank (23) is arranged at described cable trench bottom also excavation, one water level controller (3) is installed in described measurement water level water storage tank, in described water level controller, waterproof press-button liquid level normal open switch (31) is connected with the 40A ac contactor coil, described water level controller is surveyed water level in power distribution room, when in measuring the water level water storage tank, water level has the water storage tank top, water level controller was not controlled the submersible pump unlatching by the 40A A.C. contactor, when in measuring the water level water storage tank, water level is lower than the water storage tank top, water level controller cuts out by 40A A.C. contactor control submersible pump, described water level controller comprises the framework (33) of a column, described framework bottom is communicated with measurement water level water storage tank, be provided with a magnetic float (4) in described framework, described framework middle part is installed a waterproof press-button liquid level normal open switch (31) and is connected with the 40A ac contactor coil, the pushbutton unit of the described waterproof press-button liquid level normal open switch of one triggering is installed on described magnetic float, the moving pushbutton unit shake-up of shipper pole liquid level normal open switch on magnetic float when water level did not have the water storage tank top in power distribution room water inlet and measurement water level water storage tank, make liquid level normal open switch closure, the energising of 40A ac contactor coil, 40A A.C. contactor moving contact closure, submersible pump is started working, when water level decline and pushbutton unit disengaging liquid level normal open switch, the liquid level normal open switch separates automatically, and submersible pump cuts out.

2. a kind of power distribution room self-draining arrangement according to claim 1, it is characterized in that: described framework is also installed a waterproof press-button liquid level normally closed switch (32) above described waterproof press-button liquid level normal open switch, described waterproof press-button liquid level normally closed switch is connected in series with the 250A ac contactor coil, when in power distribution room, water level rises to RTO fuse lower end and low-pressure line-outgoing cable junction 100mm, in water level controller, on magnetic float, the moving pushbutton unit of shipper pole is tactile makes its separation by waterproof press-button liquid level normally closed switch, the outage of 250A ac contactor coil, the low-pressure line-outgoing cable is stopped power supply, when water level descends, in water level controller, magnetic float moves down, waterproof press-button liquid level normally closed switch resets, the action of 250A A.C. contactor is closed, the low-pressure line-outgoing cable restores electricity.

3. a kind of power distribution room self-draining arrangement according to claim 2, it is characterized in that: described framework is square box, the framework bottom is communicated with measurement water level water storage tank by eyed structure.

4. a kind of power distribution room self-draining arrangement according to claim 3, it is characterized in that: described pushbutton unit comprises upper pushbutton unit (42) and is located at the next pushbutton unit (41) of upper pushbutton unit below, between described upper pushbutton unit and the next pushbutton unit, by pushbutton unit brace (44), is fixedly connected with.

5. a kind of power distribution room self-draining arrangement according to claim 4, it is characterized in that: described magnetic float comprises the ball float body, float body top is fixedly connected with a cylindric fixed leg (43), described fixed leg outer circumferential sides is fixedly connected with the magnetic float brace (45) of a tubular, and described magnetic float brace is fixedly connected with upper pushbutton unit and the next pushbutton unit simultaneously.

6. a kind of power distribution room self-draining arrangement according to claim 5, it is characterized in that: the switch contact of described upper pushbutton unit and the next pushbutton unit is ellipse.

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