CN204238345U - Cable trench self adaptation dewatering installation - Google Patents

Abstract

The utility model discloses an adaptive drainage device for a cable trench, which comprises a cable trench (2) arranged under the ground (1) and a cable pipe (3) connected to the cable trench (2). The submersible pump (4) is installed, and the submersible pump (4) is tightly connected with one end of the drainage pipe (5). ) is provided with a water level sensor, the water level sensor includes an upper water level sensor (7) and a lower water level sensor (8), and the signals of the upper water level sensor (7) and the lower water level sensor (8) It is connected with the control box (9), and the submersible pump control switch (10) is set in the control box (9). The utility model can monitor the water accumulation in the cable trench, discharge the water accumulation in the cable trench in time, and protect the switch station The cable joints and switch cabinets in the cable trench prevent failures and are of great significance to ensure the stable operation of power equipment.

Description

Adaptive drainage device for cable trench

technical field

The utility model relates to the technical field of underground drainage equipment for substations, in particular to an adaptive drainage device for cable trenches.

Background technique

In the power industry, the wells and cable trenches of switch stations are generally located under the ground outside the switch station. The upper part is the cable joint and the switch cabinet. If the humidity is too high, it will cause condensation on the cable joint, switch switch, and current transformer. The condensation part is caused by the water vapor contained in the air. Potential safety hazards caused by insulation aging caused by equipment.

When there is heavy rain, the operating personnel need to check. If there is water, the operating personnel need to lift the cable cover and put the water pump into the cable trench for drainage. This is time-consuming, laborious, and has potential safety hazards for the operating personnel. Before each drainage, the cable cover should be raised before the water pump is put into the cable trench for drainage, which increases the workload of the operators and safety hazards. Sometimes when the water pump is placed, the cable will be damaged, which will increase safety hazards. Therefore , if an adaptive drainage device for the cable trench is designed, it can automatically drain the accumulated water in the cable trench, and immediately drain the accumulated water, eliminating the possibility of timely drainage due to insufficient inspection by the operating personnel, and can protect the cables in the switch station The cable joints and switch cabinets in the ditch are of great significance to the emergency repair work of electric power in bad weather, to prevent failures, and to ensure the stable operation of electric power equipment.

Utility model content

The utility model mainly solves the technical problem that the existing cable trench cannot be automatically drained, and provides a cable trench self-adaptive drainage device that can automatically drain the accumulated water in the cable trench.

In order to solve the above-mentioned technical problems, the utility model provides a self-adaptive drainage device for a cable trench, which includes a cable trench arranged under the ground and a cable pipe connected to the cable trench, and a submersible pump is arranged in the cable trench. The submersible pump is connected with one end of the drainage pipe in a sealed manner, and the other end of the drainage pipe extends out of the cable trench and opens into the sewer. A water level sensor is installed in the cable trench, and the water level sensor includes an upper water level sensor and a lower water level sensor. The signals of the upper water level sensor and the lower water level sensor are connected to the control box, and a submersible pump control switch is set in the control box.

In the cable trench self-adaptive drainage device described above, a water collection well is arranged in the cable trench, and the submersible pump is arranged in the water collection well.

In the self-adaptive drainage device for the cable trench, the water level sensor in the control box is connected to the time relay.

For the self-adaptive drainage device for the cable trench described above, a power indicator light is provided in the control box.

In the self-adaptive drainage device for the cable trench described above, a submersible pump operation indicator light is provided in the control box.

For the self-adaptive drainage device for the cable trench described above, a manual switch is provided in the control box.

The beneficial effects of the utility model are: by setting the water level sensor, the water accumulation in the cable trench can be monitored, and the water accumulation in the cable trench can be discharged in time; Drain the accumulated water in the cable trench completely, and reduce the accumulated water in the cable trench to zero; the utility model can protect the cable joints and switch cabinets in the cable trench of the switch station, and prevent failures in the emergency repair work of electric power in bad weather. It can effectively improve the safety of substation operation, and is of great significance to ensure the stable operation of power equipment.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in detail.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the structure inside the control box of the utility model.

Fig. 3 is the circuit diagram in the utility model control box.

Description of drawings: 1-ground, 2-cable trench, 3-cable pipe, 4-submersible pump, 5-drain pipe, 6-sewer, 7-upper water level sensor, 8-lower water level sensor, 9-control box, 10-submersible pump control switch, 11-collection well, 12-time relay, 13-power indicator light, 14-submersible pump operation indicator light, 15-manual switch.

Detailed ways

The cable trench adaptive drainage device shown in Figure 1 includes a cable trench 2 arranged below the ground 1 and a cable pipe 3 connected to the cable trench 2, and a submersible pump 4 is arranged in the cable trench 2, and the submersible pump 4 is connected to the drainage pipe. 5. One end is sealed and connected. The other end of the drain pipe 5 extends out of the cable trench 2 and opens into the sewer 6. A water level sensor is set in the cable trench 2. The water level sensor includes an upper water level sensor 7 and a lower water level sensor 8. The upper water level The signals of the sensor 7 and the lower water level sensor 8 are connected to the control box 9, and the submersible pump control switch 10 is set in the control box 9. When the water level in the cable trench 2 reaches the upper water level sensor 7, the upper water level sensor 7 is activated. The upper water level sensor 7 transmits the signal to the submersible pump control switch 10 in the control box 9, so that the submersible pump 4 works to pump water, and the accumulated water in the cable trench 2 is discharged to the sewer 6 through the drain pipe 5; when the cable trench 2 When the inner water level drops and reaches the lower water level sensor 8, the lower water level sensor 8 transmits a signal to the submersible pump control switch 10 in the control box 9, so that the submersible pump 4 stops working, so that the purpose of automatic drainage can be achieved.

As shown in Figure 1, as a further improvement measure of the utility model, the above-mentioned cable trench self-adaptive drainage device is provided with a water collection well 11 in the cable trench 2, and the position of the water collection well 11 is set at a wider place in the cable trench 2. The top of water well 11 avoids cable wire, can prevent like this when submersible pump 4 is placed and cause unnecessary damage to cable wire, the depth of water collection well 11 is deeper than the bottom surface of cable ditch 2, and submersible pump 4 is arranged in water collection well 11, The submersible pump 4 is provided with a fixed placement point, so that the accumulated water in the cable trench 2 is finally collected in the water collection well 11, and the drainage in the cable trench 2 can be made more thorough by the submersible pump 4 . As shown in Figure 2, due to the different placement positions of the lower water level sensor 8 and the submersible pump 4, when the lower water level sensor 8 senses that the water level has reached the lowest point, there may still be accumulated water in the sump 11 where the submersible pump 4 is located. , so the utility model can be further improved, the time relay 12 is connected on the lower water level sensor 8 in the control box 9, and the submersible pump 4 can be delayed to stop working, that is, when the lower water level sensor 8 senses that the water level reaches the lowest point , the submersible pump 4 continues to work for a period of time, and the time to drain the accumulated water in the sump 11 is as the criterion. The accumulated water in the cable trench 2 is reduced to zero.

As shown in Fig. 2 and Fig. 3, the self-adaptive drainage device for the cable trench is provided with a power supply indicator light 13 in the control box 9, so that the staff can observe the working conditions of the power supply in the control box 9. The submersible pump running indicator light 14 can also be set in the control box 9, which can make the staff understand the working situation of the submersible pump 4.

As shown in Fig. 2 and Fig. 3, a manual switch 15 is set in the control box 9 for the self-adaptive drainage device of the cable trench. The manual switch 15 allows the staff to manually start and close the submersible pump 4, and can check the submersible pump 4 during normal inspection. Whether it can work normally to prevent the submersible pump 4 from breaking down and not automatically draining water.

The embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiment, and for those of ordinary skill in the art, some modifications and improvements can be made without departing from the premise of the utility model , these should also be regarded as belonging to the protection scope of the present utility model.

Claims (6)

1. a cable trench self adaptation dewatering installation, comprise the cable trench (2) being arranged on below, ground (1) and the cable conduit (3) be communicated with cable trench (2), in described cable trench (2), submersible pump (4) is set, described submersible pump (4) and gutter (5) one end are tightly connected, the other end of gutter (5) stretches out cable trench (2) and is opened on sewer (6), it is characterized in that: in described cable trench (2), water level sensor is set, described water level sensor comprises water level sensor (7) and lower water level sensor (8), described upper water level sensor (7) is connected with control cabinet (9) with the signal of lower water level sensor (8), in described control cabinet (9), submersible pump gauge tap (10) is set.

2. cable trench self adaptation dewatering installation according to claim 1, is characterized in that: in described cable trench (2), arrange collecting well (11), and described submersible pump (4) is arranged in collecting well (11).

3. cable trench self adaptation dewatering installation according to claim 1 and 2, is characterized in that: the lower water level sensor (8) in described control cabinet (9) is connected with the time relay (12).

4. cable trench self adaptation dewatering installation according to claim 3, is characterized in that: in described control cabinet (9), arrange power supply indicator (13).

5. cable trench self adaptation dewatering installation according to claim 3, is characterized in that: in described control cabinet (9), arrange submersible pump run indicator (14).

6. cable trench self adaptation dewatering installation according to claim 3, is characterized in that: in described control cabinet (9), arrange hand switch (15).