Residual cable well

Abstract

The utility model relates to the technical field of electric power facilities, in particular to a residual cable well which comprises residual cable containing grooves communicated between cable trenches. The residual cable placing groove comprises an arc section and transition sections located at the two ends of the arc section; the transition section is in butt joint with the cable trench; the bottom of the residual cable placing groove is provided with a gradient, the gradient gradually decreases from the transition section to the interior of the residual cable placing groove, a drain pipe is arranged on the groove wall at the lowest point of the gradient of the bottom of the residual cable placing groove, and a check valve is arranged at the end of the drain pipe outside the groove wall. The structure can realize natural drainage of the residual cable well, can effectively prevent external water from flowing back and flowing backwards, prevents the residual cable from being soaked in water for a long time, guarantees the insulation performance and normal operation of the cable, prolongs the service life of the cable, does not need extra power equipment, and saves energy and maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power facilities, specifically is a surplus cable well. BACKGROUND

[0002] The cable surplus cable well is an underground facility for storing excess cables in cable laying engineering. In the process of cable laying, due to factors such as actual path and equipment connection, a certain length of cable is reserved. The surplus cable well provides a space for neatly coiling and storing these surplus cables, which facilitates the adjustment of cable length in the future due to line maintenance, equipment replacement, line expansion, etc.

[0003] The surplus cable well is generally opened on one side of the cable trench. The cable line enters the surplus cable well from one end of the cable trench, is laid along the cable support in the surplus cable well, and then is led out from the other end of the cable trench to ensure the neat wiring of the cable line. The existing technology "power cable surplus cable island" (publication number: CN207677414U) discloses a power surplus cable well. Through the design of the circular arc-shaped surplus cable island, the cross-winding of the cable line can be reduced, and the maintenance efficiency of the cable line can be improved. However, the existing technology still has the following technical problems:

[0004] Since the surplus cable well is set outdoors, the surplus cable well in the existing technology is prone to water accumulation in the rainy season. The water accumulation can soak the cable line, causing the outer skin of the cable line to age, the insulation performance to decrease, and the risk of electric leakage to increase. In addition, the water accumulation can also corrode the structure of the surplus cable well, shorten its service life, and affect the normal operation and maintenance of the cable. UTILITY MODEL CONTENTS

[0005] The utility model provides a surplus cable well, which can solve the problem that the surplus cable well in the existing technology is prone to water accumulation in the rainy season, causing the outer skin of the cable line to age, the insulation performance to decrease, the risk of electric leakage to increase, and ultimately the service life of the cable to decrease.

[0006] The present application provides the following technical scheme: a surplus cable well, comprising a surplus cable placing groove communicated between cable trenches; the surplus cable placing groove comprises an arc segment and transition segments located at both ends of the arc segment; the transition segments are connected to the cable trenches; the bottom of the surplus cable placing groove is provided with a slope, which gradually decreases from the transition segments to the inside of the surplus cable placing groove, and a groove wall at the lowest point of the slope at the bottom of the surplus cable placing groove is provided with a drain pipe, and the end of the drain pipe outside the groove wall is provided with a check valve.

[0007] Advantages:

[0008] 1. The self-flowing drainage. The slope of the bottom of the excess cable placing groove gradually decreases from the transition section to the inside, so that the rainwater seeping into the excess cable placing groove can rely on the action of gravity and automatically flow to the lowest point of the slope, and then be discharged through the drain pipe. This natural drainage method does not require additional power equipment, saves energy and maintenance cost, has high drainage efficiency, can timely drain the accumulated water, prevents the excess cable from being soaked for a long time, protects the insulation performance and normal operation of the cable, and prolongs the service life of the cable.

[0009] 2. Preventing water backflow and improving safety. The check valve is installed at the end of the drain pipe, which can effectively prevent external water from flowing back to the excess cable placing groove. Especially in heavy rain or when the pressure of the external drainage system changes, the check valve can prevent rainwater, sewage and the like from flowing back through the drain pipe, further protecting the excess cable from flooding.

[0010] Further, the bottom slope of the transition section is greater than the bottom slope in the circular arc section.

[0011] Beneficial effect: The larger bottom slope of the transition section and the cable trench interface can make the water flow quickly collect and accelerate to the excess cable placing groove before entering the excess cable placing groove, avoiding water accumulation at the transition section and the cable trench interface, effectively protecting the cable at the connection area of the cable trench and the excess cable placing groove from being soaked.

[0012] Further, the connection between the transition section and the cable trench is provided with a expansion joint.

[0013] Beneficial effect: Because the wall building materials of the cable trench and the excess cable placing groove will expand and contract with temperature changes, if the overall structure of the wall is continuous, temperature stress will accumulate inside. When the stress exceeds the bearing capacity of the wall material, cracks will appear in the wall, ground and the like, affecting safety and aesthetics. Therefore, the wall is divided into several relatively independent parts by the expansion joint, allowing each part to freely expand and contract, thereby releasing temperature stress, reducing structural damage caused by temperature deformation, and prolonging the service life of the excess cable placing groove.

[0014] Further, the inner wall of the excess cable placing groove is also provided with angle steels at intervals, and the angle steels are provided with multiple layers.

[0015] Beneficial effect: The angle steels are used to support and guide the cable lines, so that the cable lines can be more firmly fixed, reducing the shaking and displacement of the cable lines in the placing groove. The multiple layers of angle steels can arrange the cable lines in layers, prevent the cable lines from winding and affecting each other, avoid the outer skin from being worn due to the friction between the cable lines or between the cable lines and the groove wall, and prolong the service life of the cable.

[0016] Further, the bottom of the excess cable placing groove is provided with a center support column, a side support column and an intermediate support column, the intermediate support column is located between the center support column and the side support column, the center support column is located at the center of the circular arc segment, a plurality of cover plates are laid above the excess cable placing groove, and the cover plates cover the entire excess cable placing groove through the center support column, the side support column, the intermediate support column and the wall of the excess cable placing groove.

[0017] Beneficial effects: the cover plates can be erected between the wall of the excess cable placing groove and the support columns to cover the top of the entire excess cable placing groove, so that the cable lines in the groove are safely stored and damage of external environmental factors to the cable lines is prevented, and the laid cover plates can be opened to facilitate subsequent maintenance personnel to quickly maintain and repair the cable lines in the groove.

[0018] Further, a ladder hanging ring is fixed on the side wall of the intermediate support column.

[0019] Beneficial effects: the ladder hanging ring is fixed on the side wall of the intermediate support column, does not occupy too much space inside the excess cable placing groove, does not interfere with the placement and arrangement of the cable lines, makes the internal space of the excess cable placing groove be fully utilized, and enables the workers to safely and conveniently enter the internal space of the excess cable placing groove, improving the convenience of the workers in entering and exiting. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure top view of the utility model. DETAILED DESCRIPTION

[0021] The following will be further described in detail through specific embodiments:

[0022] The marks in the drawings of the specification include: wall 1, center support column 2, angle steel 3, intermediate support column 4, frame beam 5, side support column 6, transition segment 7, cable trench 8, expansion joint 9, starting slope line 10, slope gradual change arrow 11, ladder hanging ring 12, drain pipe 13, circular arc segment 14.

[0023] Example one

[0024] As shown in the drawings, Figure 1 An excess cable well, which comprises an excess cable placing groove communicated between cable trenches 8; the excess cable placing groove comprises a circular arc segment 14 surrounded by a wall 1 and transition segments 7 located at both ends of the circular arc segment 14; the transition segments 7 are connected with the cable trenches 8; and expansion joints 9 are arranged at the connection positions of the transition segments 7 and the cable trenches 8; the wall 1 is divided into a plurality of relatively independent parts through the expansion joints 9, so that each part can freely expand and contract, thereby releasing temperature stress, reducing the influence of thermal expansion and cold contraction of the wall building material with temperature change, reducing the structural damage caused by wall deformation and prolonging the service life of the excess cable placing groove.

[0025] The bottom of the cable storage groove is provided with a slope, as shown by the slope gradient arrow 11 in Figure 1 The slope gradually decreases from the transition section 7 to the inside of the cable storage groove, and the boundary is the slope line 10 in Figure 1 The bottom slope of the transition section 7 is greater than the bottom slope in the circular arc section 14. In this embodiment, the bottom slope of the transition section 7 is 40%, and the bottom slope of the circular arc section 14 is at least 0.5%. The transition section 7 has a larger bottom slope, which can make the water flow quickly gather and accelerate to the cable storage groove before entering the cable storage groove, thereby avoiding water accumulation at the interface between the transition section 7 and the cable trench 8, and effectively protecting the cables in the connection area of the cable trench 8 and the cable storage groove from being soaked.

[0026] As shown in Figure 1 , a drain pipe 13 is arranged on the wall of the cable storage groove at the lowest point of the slope at the bottom of the cable storage groove. The end of the drain pipe 13 outside the wall 1 is provided with a check valve. The gradually decreasing slope of the bottom of the cable storage groove from the transition section 7 to the inside enables the rainwater that seeps into the cable storage groove to automatically flow to the lowest point of the slope and be discharged through the drain pipe by gravity. This natural drainage method does not require additional power equipment, saving energy and maintenance costs, and has high drainage efficiency, which can timely drain the accumulated water and prevent the excess cable from being soaked in water for a long time, thereby protecting the insulation performance and normal operation of the cable. The installation of the check valve at the end of the drain pipe 13 can effectively prevent external water from flowing back into the cable storage groove. In particular, in heavy rain or when the pressure of the external drainage system changes, the check valve can prevent rainwater, sewage, etc. from flowing back through the drain pipe 13, further protecting the excess cable from waterlogging.

[0027] The inner wall of the cable storage groove is also provided with angle steels 3 at intervals, and the angle steels 3 are arranged in multiple layers in the vertical direction. In this embodiment, the angle steels 3 are arranged in four layers. The angle steels 3 are used to support and guide the cable lines, so that the cable lines are firmly fixed and the shaking and displacement of the cable lines in the cable storage groove are reduced. The multiple layers of angle steels 3 can arrange the cable lines in layers, prevent the cable lines from winding and affecting each other, and avoid the outer skin being worn due to the friction between the cable lines or between the cable lines and the wall, thereby prolonging the service life of the cable.

[0028] The bottom of the cable storage groove is provided with a center support column 2, a side support column 6, and an intermediate support column 4. The side support column 6 is located on the same straight line as one wall 1 of the cable trench 8. The intermediate support column 4 is located between the center support column 2 and the side support column 6. The center support column 2 is located at the center of the circular arc section 14. The intermediate support column 4 is provided with a ladder hanging ring 12 for the convenience of workers. Frame beams 5 are arranged between the intermediate support column 4 and the side support column 6 and the wall 1 of the circular arc section 14. A plurality of cover plates are arranged above the cable storage groove, and the cover plates cover the entire cable storage groove through the center support column 2, the side support column 6, the intermediate support column 4, the frame beams 5, and the wall 1 of the cable storage groove.

[0029] The usage method of this structure is as follows:

[0030] From the cable Figure 1 The cable trench 8 at the top center leads into the transition section 7 and into the excess cable placement groove. Following the inner wall of the arc section 14, the cable is secured using angle steel 3 arranged in multiple layers at intervals on the inner wall. The cable is placed layer by layer on different layers of angle steel 3, ensuring the cable is secure and orderly arranged to prevent tangling and friction. Finally, the cable is... Figure 1 The cable trench 8 extends from the lower middle section. When rainwater or other water sources seep into the cable storage trench, the water will flow quickly from the transition section 7 to the lowest point of the slope inside the cable storage trench under the action of gravity, due to the slope that gradually decreases from the transition section 7 to the interior. The water will then be discharged through the drain pipe 13. The check valve at the end of the drain pipe 13 can effectively prevent backflow of water and protect the cable from the threat of flooding.

[0031] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A surplus cable well characterized by: The utility model provides a cable trench, which comprises a surplus cable placing groove connected between the cable trenches; the surplus cable placing groove comprises an arc segment and transition segments at both ends of the arc segment; the transition segments are connected with the cable trenches; the bottom of the surplus cable placing groove is provided with a slope, which gradually decreases from the transition segments to the inside of the surplus cable placing groove; a drainage pipe is arranged on the groove wall at the lowest point of the slope of the bottom of the surplus cable placing groove; and a check valve is arranged at the end of the drainage pipe outside the groove wall.

2. A slackline well according to claim 1, characterized in that: The bottom slope of the transition segment is greater than the bottom slope in the arc segment.

3. A slackline well according to claim 2, characterized in that: A expansion joint is arranged at the connection between the transition segment and the cable trench.

4. A slackline well according to claim 3, characterized in that: Angle steels are also arranged at intervals on the inner wall of the surplus cable placing groove, and the angle steels are provided with multiple layers.

5. A slackline well according to claim 4, characterized in that: The bottom of the surplus cable placing groove is provided with a center support column, side support columns and middle support columns; the middle support columns are located between the center support column and the side support columns; the center support column is located at the center of the arc segment; a plurality of cover plates are arranged above the surplus cable placing groove; and the cover plates cover the entire surplus cable placing groove through the center support column, the side support columns, the middle support columns and the wall of the surplus cable placing groove.

6. A slackline well according to claim 5, characterized in that: A ladder hanging ring is fixed on the side wall of the middle support column.

Images