CN214143990U

CN214143990U - Drainage structure for cable trench of converter station, transformer substation and switch station

Info

Publication number: CN214143990U
Application number: CN202023017856.XU
Authority: CN
Inventors: 王伟军; 张玉明; 周海宏; 李学鹏; 惠君伟; 董明; 秋向飞; 卢洁; 高宇; 梁伟; 李越; 赵捷; 张明
Original assignee: State Grid Shaanxi Electric Power Construction Branch; Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Current assignee: State Grid Shaanxi Electric Power Construction Branch; Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-09-07
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a drainage structures that is used for current conversion station, transformer substation and switch station cable pit belongs to the power transmission and transformation field. The utility model discloses a drainage structures for converter station, transformer substation and switching station cable pit, when ground has rainwater to the cable pit, the rainwater gets into the escape canal, gets into the sump pit through its low reaches, later flows in the rainwater pipe network through the drain pipe to avoid forming ponding in the upstream face department of cable pit. Additionally, the utility model provides a cable pit upper portion set up the problem of crossing the section size of water aqueduct compression cable pit.

Description

Drainage structure for cable trench of converter station, transformer substation and switch station

Technical Field

The utility model belongs to the power transmission and transformation field, especially, a drainage structures that is used for current conversion station, transformer substation and switch station cable pit.

Background

For the convenience of overhauling after commissioning, the cable trench in the station area of the converter station and the transformer substation (the switch station) generally adopts a mode of being higher than the ground, so that the flowing of rainwater on the ground of the station area can be blocked. However, accumulated water is formed at the upstream surface of the cable trench, and certain potential safety hazards exist. In order to solve the problem of water accumulation, the water passing aqueduct is often arranged at the top of the cable trench at intervals, but the water passing aqueduct has the following defects: firstly, the space size of the cable trench is reduced; secondly, the drainage effect is not very ideal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome current cable pit and rely on the shortcoming that the cross-over drainage has reduced the space dimension of cable pit, provide a drainage structures that is used for current conversion station, transformer substation and switch station cable pit.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a drainage structure for cable trenches of a converter station, a transformer substation and a switch station comprises cable trenches, wherein the cable trenches are arranged in a vertical and vertical contour line mode, and trench walls of the cable trenches are higher than the ground;

the upstream surface of the cable trench is provided with a drainage trench parallel to the cable trench, the downstream of the drainage trench is provided with a water collecting pit, and the water collecting pit is communicated with the rainwater pipe network through a drainage pipe.

Furthermore, the drainage ditch is arranged close to the upstream face of the cable trench.

Further, the bottom of the cable trench is deeper than the bottom of the drainage trench.

Further, the top of the cable trench is higher than the top of the drainage trench.

Furthermore, the height of the top of the ditch wall of the drainage ditch at the upstream face is consistent with the height of the ground.

Further, if the broken stone sealing layer is arranged on the ground, the bottom elevation of the broken stone sealing layer is the same as the top elevation of the upstream surface ditch wall of the drainage ditch.

Further, if a concrete layer or a brick sealing layer is arranged on the ground, the top elevation of the concrete layer or the brick sealing layer is the same as the top elevation of the upstream surface ditch wall of the drainage ditch.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a drainage structures for converter station, transformer substation and switching station cable pit, when ground has rainwater to the cable pit, the rainwater gets into the escape canal, gets into the sump pit through its low reaches, later flows in the rainwater pipe network through the drain pipe to avoid forming ponding in the upstream face department of cable pit. Additionally, the utility model provides a cable pit upper portion set up the problem of crossing the section size of water aqueduct compression cable pit.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention.

Wherein: 1-cable trench; 2-a drainage ditch.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1, fig. 1 is a schematic structural diagram of the present invention, a vertical contour line of a cable trench 1 is arranged, a trench wall of the cable trench 1 is 100mm higher than the ground (the height can be adjusted according to actual conditions on the site), when rainwater flows to the cable trench 1 on the ground, accumulated water is formed at the upstream surface of the cable trench 1, a drainage trench 2 is arranged close to the upstream surface of the cable trench 1, and the drainage trench 2 is parallel to the cable trench 1; a water collecting pit is arranged at the lower part of the drainage ditch 2 and is communicated with the rainwater pipe network through a drainage pipe; when ground rainwater flows to cable pit 1, owing to set up escape canal 2 here, ground rainwater can flow in escape canal 2, and the rethread sets up the sump pit in escape canal 2's low reaches, flows into station district rainwater pipe network through the drain pipe with 2 middle pondings in escape canal to avoid forming ponding in the upstream face department of cable pit 1.

Referring to fig. 2, fig. 2 is the utility model discloses a cross-sectional view, the side of meeting water of cable pit 1 is equipped with escape canal 2, and escape canal 2 is on a parallel with the setting of cable pit 1, and the bottom of escape canal 2 is on the bottom of

cable pit

1, and 2 tops in escape canal are under the top of cable pit 1.

The height of the top of the water-facing surface of the drainage ditch 2 is kept at the same level with the ground. If the ground is sealed by adopting the crushed stones, the bottom elevation of the crushed stone sealing layer is kept consistent with the top elevation of the upstream surface of the drainage ditch 2, namely the crushed stone sealing layer is required to be arranged at the joint of the crushed stone sealing layer and the drainage ditch 2 to be a certain gradient and slowly transited to the drainage ditch wall elevation; if the ground is sealed by concrete or bricks, the elevation of the top of the concrete or brick sealing layer is consistent with the elevation of the top of the upstream face of the drainage ditch 2.

The utility model discloses increased the escape canal that is parallel one at the cable pit upstream face to avoid because the cable pit manger plate arouses the local ponding in station area ground. In addition, after the drainage ditch is arranged, the water-passing aqueduct is not required to be repeatedly arranged at the upper part of the cable ditch, and the section size of the cable ditch is not required to be compressed.

The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims

1. A drainage structure for cable trenches of a converter station, a transformer substation and a switch station is characterized by comprising a cable trench (1), wherein the cable trench (1) is arranged in a vertical and vertical contour line mode, and a trench wall of the cable trench (1) is higher than the ground;

the upstream side of the cable trench (1) is provided with a drainage ditch (2) parallel to the cable trench, the downstream of the drainage ditch (2) is provided with a water collecting pit, and the water collecting pit is communicated with a rainwater pipe network through a drainage pipe.

2. The drainage structure for cable trenches of converter stations, substations and switchgears according to claim 1, characterized in that the drainage ditch (2) is arranged against the upstream face of the cable trench (1).

3. The drainage structure for cable trenches of converter stations, substations and switchgears according to claim 1, characterized in that the bottom of the cable trench (1) is deeper than the bottom of the drainage ditch (2).

4. Drainage structures for cable trenches for converter stations, substations and switchgears according to claim 1 or 3, characterized in that the top of the cable trench (1) is higher than the top of the drainage trench (2).

5. The drainage structures for cable trenches in converter stations, substations and switchyards according to claim 1, characterized in that the height of the roof of the trench (2) at the upstream face corresponds to the ground level.

6. The drainage structure for cable trenches in converter stations, transformer substations and switching stations according to claim 5, characterized in that if a gravel sealing layer is arranged on the ground, the bottom elevation of the gravel sealing layer is the same as the top elevation of the trench wall of the upstream surface of the drainage trench (2).

7. The drainage structure for cable trenches in converter stations, transformer substations and switching stations according to claim 5, characterized in that if a concrete layer or brick sealing layer is provided on the ground, the top elevation of the concrete layer or brick sealing layer is the same as the top elevation of the trench wall of the upstream surface of the drainage trench (2).

8. The drainage structure for the cable trench of the converter station, the transformer substation and the switch station according to claim 1, wherein the drainage trench (2) is provided with a rain grate.