CN103487106A - Cable tunnel water level real-time monitoring device - Google Patents

Abstract

The invention discloses a real-time monitoring device for the water level of a cable tunnel, and relates to the technical field of water level monitoring devices. It includes a transformer, more than two water level indicator lights and more than two liquid level switches. A water level indicator light and a liquid level switch are connected in series to form a liquid level display branch circuit. More than two liquid level switches are located at different heights. The above liquid level display branch is connected in parallel on the two output terminals of the transformer. The device can monitor the water level in the cable tunnel in real time, without the need for staff to uncover the cover plate of the cable tunnel to observe the water level, which reduces labor intensity and improves work efficiency.

Description

A real-time monitoring device for water level in a cable tunnel

technical field

The invention relates to the technical field of water level monitoring devices, in particular to a real-time monitoring device for the water level of a cable tunnel.

Background technique

Although the accumulated water in the cable tunnel of the substation will not cause damage to the insulation of the cable sheath in a short period of time, the accumulated water may flow to the bottom of the switchgear through the cable tunnel, making the inside of the switchgear damp and seriously threatening the operation safety of the switchgear. The "Operation Regulations of Hebei Electric Power Company" clearly requires that there should be no water or debris in the cable tunnel. At present, to check whether there is water in the cable tunnel, the way to take is mainly to manually lift the cable tunnel cover plate to observe the working mode of water accumulation. Because the cable tunnel cover plate is relatively heavy, it is very laborious to lift it up, and it is basically impossible for people with little strength to complete it. Even if it is barely lifted, it is easy to cause personal injury. Under the current 7-day inspection cycle of the 110kV substation, it is impossible to monitor and grasp the water accumulation in the cable tunnel in real time. At present, there is no equipment that can monitor the water accumulation in the cable tunnel in real time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a real-time monitoring device for the water level of a cable tunnel. efficiency.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a real-time monitoring device for the water level of a cable tunnel, which is characterized in that it includes a transformer, more than two water level indicator lights and more than two liquid level switches, a water level indicator light and a The liquid level switches are connected in series to form a liquid level display branch. More than two liquid level switches are located at different heights. More than two liquid level display branches are connected in parallel to the two output terminals of the transformer.

Preferably, the device further includes a liquid level switch fixing cylinder, the liquid level switches are fixed at different height positions inside the liquid level switch fixing cylinder, and the liquid level switch fixing cylinder is provided with water inlet holes and wire outlet holes.

Preferably, the liquid level switch fixing cylinder is square and made of insulating fireproof material.

Preferably, plugs are provided between the water level indicator light and the transformer, and between the water level indicator light and the liquid level switch.

Preferably, a working indicator light is connected in parallel to the output end of the transformer.

Preferably, a protection diode, a water level indicator light and a liquid level switch are connected in series to form a liquid level display branch and connected in parallel to the two output ends of the transformer.

Preferably, there are four water level indicator lights and liquid level switches.

The beneficial effect of adopting the above technical solution is that the device uses a plurality of liquid level switches with different heights. When the liquid level reaches or exceeds the liquid level switch, the liquid level switch will be closed, and the corresponding water level indicator light will be lit. Indicates the position of the liquid level. By using the device, it can be determined when the water surface touches or submerges the cable, and specific measures can be taken in the first time, which significantly improves the safety of the equipment after water ingress. At the same time, it solves the problem that the cable tunnel cover must be lifted manually to observe the water level in the cable tunnel, which effectively reduces the labor intensity in the work of observing the water accumulation in the cable tunnel, and completely eliminates the trouble when lifting or putting back the cable tunnel cover during work. Personal injury, as well as the danger of suffocation that may occur when people enter the cable tunnel. In addition, the device has a simple structure and low manufacturing cost, and has good prospects for popularization and use. the

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural representation of the present invention;

Among them: 1. Transformer 2. Water level indicator light 3. Liquid level switch 4. Liquid level switch fixing cylinder 5. Plug 6. Working indicator light 7. Protection diode.

Detailed ways

As shown in Figure 1, a cable tunnel water level real-time monitoring device includes a transformer 1, four water level indicator lights 2 and four liquid level switches 3, and the liquid level switch is a WYW-L1 side-mounted liquid level sensor, which can also be Use other level sensors that meet the needs of this application. A water level indicator light 2 and a liquid level switch 3 are connected in series to form a liquid level display branch circuit. Four liquid level switches 3 are fixed at different height positions inside the liquid level switch fixing cylinder 4. There are water inlet holes and wire outlet holes, and the liquid level switch fixing cylinder 4 is square and made of insulating fireproof material. The four liquid level display branches are connected in parallel on the two output ends of the transformer 1 . The water level indicator light is fixed on the outer wall of the cable tunnel at a position convenient for observation.

For the convenience of connection, a plug 5 is provided between the water level indicator light 2 and the transformer 1 , and between the water level indicator light 2 and the liquid level switch 3 . The output end of the transformer 1 is connected in parallel with a working indicator light 6 for indicating whether the device is working. The device also includes a protection diode 7, which is connected in series with the liquid level display branch.

The device uses a plurality of liquid level switches with different heights. When the liquid level reaches or exceeds the liquid level switch, the liquid level switch will be closed, and the corresponding water level indicator light will be lit to indicate the position of the liquid level. By using the device, it can be determined when the water surface touches or submerges the cable, and specific measures can be taken in the first time, which significantly improves the safety of the equipment after water ingress. At the same time, it solves the problem that the cable tunnel cover must be lifted manually to observe the water level in the cable tunnel, which effectively reduces the labor intensity in the work of observing the water accumulation in the cable tunnel, and completely eliminates the trouble when lifting or putting back the cable tunnel cover during work. Personal injury, as well as the danger of suffocation that may occur when people enter the cable tunnel. The device can monitor the water accumulation in all indoor cable tunnels, cable shafts and cable channels in real time, and can be fully promoted and used in any substation equipped with cable tunnels and cable tunnels.

In this paper, specific examples are used to illustrate the principle of the present invention and its implementation. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. the

Claims (7)

1. a cable tunnel water level real-time monitoring device, it is characterized in that comprising transformer (1), two above water level indicator lights (2) and two above level switches (3), form a liquid level after a water level indicator light (2) and a level switch (3) series connection and show branch road, plural level switch (3) is positioned at different height, and the liquid level more than two shows that branch circuit parallel connection is on two output terminals of transformer (1).

2. a kind of cable tunnel according to claim 1 water level real-time monitoring device, it is characterized in that described device also comprises a level switch stationary magazine creel (4), level switch (3) is fixed on the inner differing heights position of level switch stationary magazine creel (4), and level switch stationary magazine creel (4) is provided with inlet opening and wire hole.

3. a kind of cable tunnel according to claim 2 water level real-time monitoring device, is characterized in that described level switch stationary magazine creel (4) is for square, and material is the insulation fire proofing material.

4. a kind of cable tunnel according to claim 1 water level real-time monitoring device, is characterized in that between described water level indicator light (2) and transformer (1), and be provided with plug (5) between water level indicator light (2) and level switch (3).

5. according to claim 1,2,3 or 4 described a kind of cable tunnel water level real-time monitoring devices, it is characterized in that the output terminal of described transformer (1) is parallel with relay indicating light (6).

6. a kind of cable tunnel according to claim 5 water level real-time monitoring device, is characterized in that protecting diode (7), a water level indicator light (2) and liquid level of the rear composition of a level switch (3) series connection to show that branch circuit parallel connection is on two output terminals of transformer (1).

7. a kind of cable tunnel according to claim 1 water level real-time monitoring device, is characterized in that described water level indicator light (2) and level switch (3) are provided with four.