CN103422565A - Construction method for waterlogging removing of outdoor cable chute - Google Patents

Abstract

The invention relates to a construction method for waterlogging removing of an outdoor cable chute. The method comprises the steps of 1, setting the inner bottom face of the outdoor cable chute to be a slope and setting draining holes in the bottom of the side wall of the cable chute with lower slope side; 2, mounting water conduits on the draining holes, communicating the water conduits with the mounting positions of the draining holes, sleeving seal pads at the connecting positions between the water conduits and the draining holes and radially mounting screens in the water conduits; 3, connecting the other ends of the water conduits with an adjacent rainwater well by pipelines; and 4, mounting check valves on the connecting positions between the water conduits and the rainwater well in a hinging mode, wherein the check valves are opened when water flows flow from the water conduits to the rainwater well, otherwise, the check valves are closed. According to the method, after the water flows flow into the rainwater well, the check valves are rotated in a swinging mode to be reset to connect with openings of the water conduits in a pressing mode, so backflow of water flows is avoided, the possibility that external water permeates into the cable chute is also prevented due to the seal pads at the contacting positions between the draining holes and the water conduits and creeping of small animals such as mice can be prevented by the design of the screens in the water conduits.

Description

A Construction Method for Water Removal in Outdoor Cable Trench

technical field

The invention belongs to the field of drainage construction methods, in particular to a construction method for removing stagnant water in outdoor cable trenches.

Background technique

Cable lines are an important part of urban power grids. With the increasing improvement of urban functions, the requirements for urban overhead lines to enter the ground are becoming more and more prominent. In recent years, cable trenches and cable pipes have been built on newly-built roads at the same time, and the cable channel network composed of them will provide guarantee for future urban development. As long as the outer sheath of the cable is of good quality and the laying is not damaged, a small amount of water in the cable trench will not have a great impact on the cable, but if there is too much water, the cable will be soaked in water for a long time, which will seriously affect the external insulation performance of the cable and operational stability, causing power grid accidents.

At present, the method of solving the water accumulation in the cable trench usually adopts the method of pumping, but the cost of the pump is relatively high, which seriously increases the cost of electric emergency rescue, and the submersible pump can only be completed with the help of multiple electrical components, some of which are more precise. , higher maintenance costs.

After searching, a patent document related to the content of this patent application was found, and the publication number is 202545206U. The Chinese patent discloses a device for measuring water accumulation in cable trenches. The utility model comprises a water pump, an inductor and a time-delay switch, the water pump and the sensor are connected in series, and the time-delay switch is connected in parallel with the sensor. The utility model has the advantages of: 1. It can discharge excess water in the cable ditch in time; 2. The existence of the delay switch can ensure that the water in the cable ditch can still make the water pump work for a period of time after the sensor is disconnected, prolonging the working time. cycle.

After comparison, the above patents are quite different from the technical solutions of this patent application.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art, and provide a construction method for outdoor cable trenches to remove accumulated water, which is easy to operate and effectively prevents cables from being immersed in water.

The present invention solves its technical problem and realizes by taking the following technical solutions:

A construction method for removing stagnant water in outdoor cable trenches, the steps of which are:

(1) Set the bottom surface of the outdoor cable trench as a slope, and set drainage holes at the bottom of the side wall of the cable trench on the lower side of the slope;

(2) Install the water diversion pipe on the above drainage hole, connect the water diversion pipe to the installation position of the drainage hole, set the sealing gasket on the connection position between the water diversion pipe and the drainage hole, and install the screen radially in the water diversion pipe;

(3) The other end of the diversion pipe is connected to the adjacent rainwater well through a pipeline;

(4) A one-way door is hinged at the connection position between the water diversion pipe and the rainwater well. When the water flows from the water diversion pipe to the rainwater well, the one-way door is opened, otherwise, the one-way door is closed.

And, the slope slope described in step (1) is 0.3%.

Moreover, the swing angle of the one-way door is 10-45°.

Moreover, a sealing rubber pad is provided at the mouth of the water diversion pipe in contact with the one-way door.

Advantage and positive effect of the present invention are:

The present invention uses a slope to divert the water flow in the cable ditch. When the diverted water reaches the liquid level of the drainage hole, the water flows from the drainage hole through the diversion pipe into the rainwater well, and the swing angle of the one-way door is determined by Based on calculations and trial and error, after the water flows into the rainwater well, the one-way door swings back and is crimped with the nozzle of the water diversion pipe, thereby avoiding backflow of water flow, and the gasket at the contact position between the drain hole and the drainage pipe also prevents The possibility of external moisture infiltrating into the cable trench, and the design of the screen inside the water diversion pipe also prevents small animals such as mice from crawling in, improving the safety factor of the cable trench.

Detailed ways

The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

Example 1

A construction method for removing stagnant water in outdoor cable trenches, the steps of which are:

(1) Set the bottom surface of the outdoor cable trench as a slope with a slope of 0.3%, and set drainage holes at the bottom of the side wall of the cable trench on the lower side of the slope;

(2) Install the water diversion pipe on the above drainage hole, connect the water diversion pipe to the installation position of the drainage hole, set the sealing gasket on the connection position between the water diversion pipe and the drainage hole, and install the screen radially in the water diversion pipe;

(3) The other end of the diversion pipe is connected to the adjacent rainwater well through a pipeline;

(4) A one-way door is hinged at the connection position between the water diversion pipe and the rainwater well. When the water flows from the water diversion pipe to the rainwater well, the one-way door is opened; otherwise, the one-way door is closed, and the swing angle of the one-way door is 30°. A sealing rubber pad is provided at the mouth of the water diversion pipe where the one-way door contacts.

Example 2

A construction method for removing stagnant water in outdoor cable trenches, the steps of which are:

(1) Set the bottom surface of the outdoor cable trench as a slope with a slope of 0.3%, and set drainage holes at the bottom of the side wall of the cable trench on the lower side of the slope;

(2) Install the water diversion pipe on the above drainage hole, connect the water diversion pipe to the installation position of the drainage hole, set the sealing gasket on the connection position between the water diversion pipe and the drainage hole, and install the screen radially in the water diversion pipe;

(3) The other end of the diversion pipe is connected to the adjacent rainwater well through a pipeline;

(4) A one-way door is hinged at the connection position between the water diversion pipe and the rainwater well. When the water flows from the water diversion pipe to the rainwater well, the one-way door is opened; otherwise, the one-way door is closed, and the swing angle of the one-way door is 10°. A sealing rubber pad is provided at the mouth of the water diversion pipe where the one-way door contacts.

Example 3

A construction method for removing stagnant water in outdoor cable trenches, the steps of which are:

(1) Set the bottom surface of the outdoor cable trench as a slope with a slope of 0.3%, and set drainage holes at the bottom of the side wall of the cable trench on the lower side of the slope;

(2) Install the water diversion pipe on the above drainage hole, connect the water diversion pipe to the installation position of the drainage hole, set the sealing gasket on the connection position between the water diversion pipe and the drainage hole, and install the screen radially in the water diversion pipe;

(3) The other end of the diversion pipe is connected to the adjacent rainwater well through a pipeline;

(4) A one-way door is hinged at the connection position between the water diversion pipe and the rainwater well. When the water flows from the water diversion pipe to the rainwater well, the one-way door is opened; otherwise, the one-way door is closed, and the swing angle of the one-way door is 45°. A sealing rubber pad is provided at the mouth of the water diversion pipe where the one-way door contacts.

Claims (4)

1. A construction method for removing stagnant water in outdoor cable trenches, characterized in that: its steps are: (1) Set the bottom surface of the outdoor cable trench as a slope, and set drainage holes at the bottom of the side wall of the cable trench on the lower side of the slope; (2) Install the water diversion pipe on the above drainage hole, connect the water diversion pipe to the installation position of the drainage hole, set the sealing gasket on the connection position between the water diversion pipe and the drainage hole, and install the screen radially in the water diversion pipe; (3) The other end of the diversion pipe is connected to the adjacent rainwater well through a pipeline; (4) A one-way door is hinged at the connection position between the water diversion pipe and the rainwater well. When the water flows from the water diversion pipe to the rainwater well, the one-way door is opened, otherwise, the one-way door is closed. 2. The construction method for removing stagnant water in outdoor cable trenches according to claim 1, characterized in that: the gradient of the slope described in step (1) is 0.3%. 3. The construction method for removing stagnant water in outdoor cable trenches according to claim 1, characterized in that: the swing angle of the one-way door is 10-45°. 4. The construction method for removing stagnant water in outdoor cable trenches according to claim 1, characterized in that: a sealing rubber pad is provided at the mouth of the water diversion pipe in contact with the one-way door.