CN216475195U - Underwater cable duct arrangement structure - Google Patents
Underwater cable duct arrangement structure Download PDFInfo
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- CN216475195U CN216475195U CN202122858196.6U CN202122858196U CN216475195U CN 216475195 U CN216475195 U CN 216475195U CN 202122858196 U CN202122858196 U CN 202122858196U CN 216475195 U CN216475195 U CN 216475195U
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Abstract
The utility model discloses an underwater cable duct laying structure which comprises a cable duct, a leakage drainage device, a water level monitoring device, a drainage pump and a cable well. The cable pipes are laid along the river bottom, the drainage pipe is led to the lowest leakage collecting well at the lowest point of the cable pipe, and the bottom of the leakage collecting well is connected with the drainage pipe main pipe and the water level monitoring equipment. The main drainage pipe is arranged along with the cable drainage pipe, is led to a shore cable well and is connected with the drainage pump, and is arranged to an external drainage system. The pressure gauge type water level gauge is arranged at the bottom of the leakage water collecting well so as to monitor the leakage water level and control the opening and closing of the drainage pump. The water level gauge and the water level gauge power line can utilize gravity to pull the water level gauge power line to complete the installation and replacement of the water level gauge. The gap between the end part of the cable tube and the cable is sealed by adopting a caulking structure, and the vent pipe is embedded simultaneously so as to ensure the balance of the internal and external air pressure of the cable tube. The utility model improves the operation environment of the cable, saves the construction period, ensures the safety and increases less overall investment.
Description
Technical Field
The utility model relates to a cable duct laying structure, in particular to a cable duct laying structure provided with a drainage system and a cross underrun system.
Background
In water conservancy and hydropower engineering, a cable duct laying structure is an indispensable structure, a cable pipe is often buried in a traffic bridge cable channel when crossing a water passing system, a river bottom or river bottom laying mode is often adopted under the condition that the traffic bridge channel is inconvenient to arrange the cable duct, and a laying construction method comprises a top pipe, a dragging pipe and an open cut buried pipe; when the hydraulic engineering is constructed across water systems, dry land construction conditions are often created by using cofferdams, open-cut pipe burying construction in a foundation pit is simple, investment cost is low, but the longitudinal direction of a pipeline is usually the height between two banks of a river channel, once water flows into or permeates into a cable pipe during construction or operation, the water is difficult to discharge, the service life of the cable is influenced by long-term soaking of the cable in water, and the cable is difficult to maintain and replace.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the background art, the utility model provides the underwater cable drainage pipe laying structure, which can effectively solve the problem of water accumulation in the underwater cable drainage pipe, improve the operation environment of the cable, facilitate construction, improve the durability and safety of the cable, and save the maintenance cost of the cable.
In order to achieve the purpose, the technical scheme of the utility model is as follows: the underwater cable calandria laying structure utilizes dry land open cut buried pipe construction created by cofferdams, and comprises cable calandria, leakage drainage equipment, water level monitoring equipment, a drainage pump, an external drainage pipeline and a cable well. The cable calandria is laid along the ground line of the river bottom, extends to two banks, passes through the bank protection retaining wall and extends into the cable well; the cable duct bank comprises a cable tube, outer-wrapped reinforced concrete, a lower plain concrete cushion layer, a reducing tee joint, a cable, a caulking structure and a vent pipe. The lowest point of the cable drain pipe is connected with the seepage drainage equipment, and the seepage drainage equipment comprises a drain pipe straight pipe section, a drain pipe elbow, a drain pipe tee joint, a drain pipe cross joint, a drain pipe main pipe section and a stainless steel plate seepage water collecting well. The lowest point of the cable duct bank is provided with a reducing tee joint, the straight pipe section of the water discharge pipe, the water discharge pipe elbow, the water discharge pipe tee joint and the water discharge pipe tee joint are connected at the reducing tee joint, the stainless steel plate seepage water collecting well is connected after the straight pipe section, the water discharge pipe elbow, the water discharge pipe tee joint and the water discharge pipe tee joint are converged at one position, and the bottom of the stainless steel plate seepage water collecting well is connected with the water discharge pipe main pipe section and the water level monitoring equipment. And the main pipe section of the drainage pipe is arranged along with the cable drainage pipe and led into the cable well and finally connected with the drainage pump arranged in the cable well, the other side of the drainage pump is connected with the external drainage pipeline, and the external drainage pipeline is finally led to a drainage system outside the cable well.
The water level monitoring equipment comprises a pressure gauge type water level meter, a water level meter power line and a water level meter conveying pipeline, wherein the pressure gauge type water level meter is arranged at the bottom of the stainless steel plate leakage water collecting well, so that leakage water level control is monitored, the drainage pump is opened and closed, the water level meter power line and the water level meter conveying pipeline follow the cable drainage pipe is arranged and led to the cable well.
The cable well comprises a cable well reinforced concrete structure, a cable well cover plate, a cable well sump pit and an overhauling crawling ladder; the cable shaft cover plate is located at the top of the reinforced concrete structure of the cable shaft and serves as an overhauling manhole cover plate, the overhauling crawling ladder is used for an overhauling worker to go in and out of the cable shaft, and the cable shaft water collecting pit is located at the bottom in the cable shaft and is used for collecting water leakage in the cable shaft.
The gap between the cable tube at the end part of the cable duct bank and the cable in the cable well is plugged by adopting a caulking structure, so that the effects of fire prevention, water prevention and small animal prevention are achieved. Meanwhile, a vent pipe is embedded in the caulking structure, so that the pressure balance between the inside and outside of the cable pipe is ensured when water leaks in the stainless steel plate leakage water collecting well.
Pressure gauge type fluviograph and fluviograph power cord utilize gravity to carry to stainless steel board seepage sump pit bottom along fluviograph pipeline, can follow the fluviograph pipeline and draw out pressure gauge type fluviograph through the fluviograph power cord when overhauing and changing.
The elevation of the end part of the cable pipe in the cable well is higher than the water surface line of the river channel so as to prevent external water from seeping into the cable well and then seeping into the cable pipe through the port of the cable pipe.
And a drain pump power line is arranged in the cable well so as to supply power to the drain pump.
And the power line of the water level gauge extends to the outside of the cable well and is connected with the power distribution cabinet.
And a cable support and a cable pipe far away from the river side are arranged in the cable well, so that a cable can be led out of the cable well.
The utility model has the beneficial effects that:
1. and the running environment of the cable is improved. The leakage drainage equipment is additionally arranged, so that the problem of accumulated water in the cable pipe in the construction period or the operation period is solved, the cable protection difficulty is reduced, the operation environment is greatly improved, the service life of the cable is prolonged, unnecessary maintenance is reduced, and meanwhile, the safety is further ensured.
2. Improve the construction condition and save the construction period. The cable duct bank is buried underground by dry open excavation created by the cofferdam, so that construction modes such as a pipe bridge and a dragging pipe are avoided, cable wells at two ends are simultaneously used as working wells, cables can be conveniently threaded in the later period, the construction condition is good, the construction is convenient, and the construction period is short.
3. The overall investment increase is less. Only the related drainage facilities such as leakage drainage equipment, water level monitoring equipment, a drainage pump and the like are added, meanwhile, the structural requirement of the cable outer cladding is lowered, and the overall investment is increased less.
Drawings
FIG. 1 is a floor plan of an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of an embodiment of the present invention;
FIG. 3 is a detail drawing A of FIG. 2, namely the detail view of the engagement of the cable duct bank with the leaky drainage device;
FIG. 4 is a cross-sectional view A-A of FIGS. 2 and 3;
FIG. 5 is a cross-sectional view B-B of FIGS. 2 and 3;
FIG. 6 is a detail B of FIG. 2, i.e., a detail view of the cable well and internal structure;
fig. 7 is a detail view of fig. 6, i.e. a detail view of the cable duct bank end.
In the figure: 1-cable duct bank; 11-a cable duct; 12-wrapping reinforced concrete; 13-plain concrete underlayment; 14-reducing tee; 15-a cable; 16-caulking structure; 17-a breather pipe; 2-a seepage drainage facility; 21-a straight section of drain pipe; 22-a drain pipe elbow; 23-a drain pipe tee; 24-a drain four-way; 25-a drain pipe main section; 26-stainless steel plate leakage water collecting well; 3-water level monitoring equipment; 31-manometer type water level gauge; 32-water gauge power cord; 33-a water level gauge delivery conduit; 4, draining the pump; 5-an outer discharge pipe; 6-a cable well; 61-cable well reinforced concrete structure; 62-cable well cover plate; 63-cable well sump; 64-overhauling the crawling ladder; 7-retaining a bank and a retaining wall; 8-river bottom ground line; 9-Water line.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
As shown in fig. 1 to 7, the present invention provides an underwater cable duct laying structure, which utilizes dry open excavation and pipe burying construction created by cofferdams, and comprises a cable duct 1, a leakage drainage device 2, a water level monitoring device 3, a drainage pump 4, an external drainage pipeline 5, a cable well 6, etc. The cable duct bank 1 is laid along a river bottom ground line 8, extends towards two banks, passes through the bank protection retaining wall 7 and extends into the cable well 6; the cable duct bank 1 comprises a cable duct 11, an outer reinforced concrete 12, a plain concrete cushion layer 13, a reducing tee 14, a cable 15 and a caulking structure 16.
The lowest point of the cable duct 1 is connected with the seepage drainage equipment 2, and the seepage drainage equipment 2 comprises a drainage pipe straight pipe section 21, a drainage pipe elbow 22, a drainage pipe tee 23, a drainage pipe cross 24, a drainage pipe main pipe section 25 and a stainless steel plate seepage water collecting well 26. The lowest point of the cable duct 1 is provided with a reducing tee 14, the reducing tee 14 is connected with a drain pipe straight pipe section 21, a drain pipe elbow 22, a drain pipe tee 23 and a drain pipe cross 24, the stainless steel plate seepage water collecting well 26 is connected after the reducing tee 14 is converged, and the bottom of the stainless steel plate seepage water collecting well 26 is connected with a drain pipe main pipe section 25 and the water level monitoring equipment 3. The drainage pipe main section 25 is arranged along with the cable drainage pipe 1 and led into the cable well 6 and finally connected with a drainage pump 4 arranged in the cable well 6, the other side of the drainage pump 4 is connected with an external drainage pipeline 5, and the external drainage pipeline 5 is finally led to a drainage system outside the cable well 6.
The water level monitoring device 3 comprises a pressure gauge type water level gauge 31, a water level gauge power line 32 and a water level gauge conveying pipeline 33, wherein the pressure gauge type water level gauge 31 is arranged at the bottom of the stainless steel plate leakage water collecting well 26 so as to monitor the leakage water level and control the opening and closing of the drainage pump 4, and the water level gauge power line 32 and the water level gauge conveying pipeline 33 are arranged along with the cable drainage pipe 1 and lead into the cable well 6.
The cable well 6 comprises a cable well reinforced concrete structure 61, a cable well cover plate 62, a cable well sump 63 and an overhauling ladder stand 64; the cable well cover plate 62 is positioned at the top of the reinforced concrete structure 61 of the cable well and is used as a manhole cover plate, the maintenance ladder stand 64 is used for maintenance personnel to go in and out the cable well 6, and the cable well water collecting pit 63 is positioned at the bottom in the cable well 6 and is used for collecting water leakage in the cable well 6.
The gap between the cable tube 11 at the end part of the cable duct bank 1 and the cable 15 in the cable well 6 is sealed by adopting a caulking structure 16, so that the effects of fire prevention, water prevention and small animal prevention are achieved. Meanwhile, the caulking structure 16 is embedded with a vent pipe 17 so as to ensure the balance of the internal and external air pressures of the cable duct 11 when water leaks in the stainless steel plate leakage water collecting well 26.
The pressure gauge type water level gauge 31 and the water level gauge power line 32 are conveyed to the bottom of the stainless steel plate leakage water collecting well 26 along the water level gauge conveying pipeline 33 by gravity, and the pressure gauge type water level gauge 31 can be extracted by pulling the water level gauge power line 32 along the water level gauge conveying pipeline 33 during maintenance and replacement.
The elevation of the end part of the cable tube 11 in the cable well 6 is higher than the water surface line 9 of the river channel, so as to prevent external water from seeping into the cable well 6 and then seeping into the cable tube 11 through the port of the cable tube 11.
A drain pump 4 power cord is provided within the cable pit 6 to power the drain pump 4.
The water gauge power line 32 extends out of the cable well 6 to be connected with the power distribution cabinet.
The cable well 6 is provided with a cable support and a cable tube 11 away from the river side, so that a cable 14 can be led out of the cable well 6.
It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (8)
1. Cable bank of tubes lays structure under water, its characterized in that: the drainage system comprises a cable drainage pipe, a leakage drainage device, a water level monitoring device, a drainage pump, an outward drainage pipeline and a cable well; the cable calandria is laid along the ground line of the river bottom, extends to two banks, passes through the bank protection retaining wall and extends into the cable well; the lowest point of the cable duct bank is connected with the seepage drainage equipment; the cable duct bank comprises a cable pipe, outer-wrapped reinforced concrete, a lower plain concrete cushion layer, a reducing tee joint, a cable, a caulking structure and a vent pipe; the seepage drainage equipment comprises a drainage pipe straight pipe section, a drainage pipe elbow, a drainage pipe tee joint, a drainage pipe cross joint, a drainage pipe main pipe section and a stainless steel plate seepage water collecting well; the lowest point of the cable duct is provided with a reducing tee joint, the reducing tee joint is connected with a straight pipe section of a drain pipe, a drain pipe elbow, a drain pipe tee joint and a drain pipe cross joint, the straight pipe section, the drain pipe elbow, the drain pipe tee joint and the drain pipe cross joint are connected into a stainless steel plate seepage water collecting well after being converged at one position, and the bottom of the stainless steel plate seepage water collecting well is connected with a main pipe section of the drain pipe and the water level monitoring equipment; and the main pipe section of the drainage pipe is arranged along with the cable drainage pipe and led into the cable well and finally connected with the drainage pump arranged in the cable well, the other side of the drainage pump is connected with the external drainage pipeline, and the external drainage pipeline is finally led to a drainage system outside the cable well.
2. The underwater cable duct bank laying structure according to claim 1, wherein: the water level monitoring equipment comprises a pressure gauge type water level meter, a water level meter power line and a water level meter conveying pipeline, wherein the pressure gauge type water level meter is arranged at the bottom of the stainless steel plate leakage water collecting well, so that the leakage water level is monitored to control the opening and closing of the drainage pump, and the water level meter power line and the water level meter conveying pipeline are arranged and led to the cable drainage pipe in the cable well.
3. The underwater cable duct bank laying structure according to claim 1, wherein: the cable well comprises a cable well reinforced concrete structure, a cable well cover plate, a cable well sump and an overhauling crawling ladder; the cable shaft cover plate is located at the top of the reinforced concrete structure of the cable shaft and serves as an overhauling manhole cover plate, the overhauling crawling ladder is used for an overhauling worker to go in and out of the cable shaft, and the cable shaft water collecting pit is located at the bottom in the cable shaft and is used for collecting water leakage in the cable shaft.
4. The underwater cable duct bank laying structure according to claim 1, wherein: the gap between the cable pipes at the end part of the cable duct bank and the cable in the cable well is plugged by the caulking structure, and the vent pipe is embedded in the caulking structure, so that the balance of the air pressure in and out of the cable pipe is ensured when the water leaks in the stainless steel plate leakage water collecting well.
5. The underwater cable duct bank laying structure according to claim 1, wherein: the elevation of the end part of the cable pipe in the cable well is higher than the water surface line of the river channel so as to prevent external water from seeping into the cable well and then seeping into the cable pipe through the port of the cable pipe.
6. The underwater cable duct bank laying structure according to claim 1, wherein: a drain pump power cord is provided within the cable well to power the drain pump.
7. The underwater cable duct bank laying structure according to claim 1, wherein: and a cable support and a cable pipe far away from the river side are arranged in the cable well, so that a cable can be led out of the cable well.
8. The underwater cable duct bank laying structure according to claim 2, wherein: and the power line of the water level gauge extends to the outside of the cable well and is connected with the power distribution cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858196.6U CN216475195U (en) | 2021-11-19 | 2021-11-19 | Underwater cable duct arrangement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858196.6U CN216475195U (en) | 2021-11-19 | 2021-11-19 | Underwater cable duct arrangement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216475195U true CN216475195U (en) | 2022-05-10 |
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ID=81398708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122858196.6U Active CN216475195U (en) | 2021-11-19 | 2021-11-19 | Underwater cable duct arrangement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216475195U (en) |
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2021
- 2021-11-19 CN CN202122858196.6U patent/CN216475195U/en active Active
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