Cable well and pressure flow automatic drainage device thereof
Technical Field
The utility model belongs to the technical field of municipal works, specific be a cable well and automatic drainage device of pressure stream thereof.
Background
In municipal engineering, cable wells mainly comprise a municipal road power (10KV) working well and a communication manhole well;
(1) according to the requirements of No. 5.6.1 in the design Standard of Power engineering Cable GB 50217-2018 and the requirements of No. 4.42 in the design technical Specification of urban Power Cable line DLT 5221-2016, the clearance inside the closed power working well is not less than 1.9 m; according to the requirements of a national standard drawing set 'power cable well design and installation' 07SD101-8, 0.3-0.5 m of covering soil is reserved on a top plate of an electric power working well, so that the working well is closed and asphalt is laid conveniently, and the bottom depth of the electric power working well is about 2.4 m;
(2) according to the 10.0.1 requirement of the design standard GB 50373 plus 2019 of communication pipeline and channel engineering and the requirement YD/T5178 plus 2017 of communication pipeline manhole and hand hole atlas, the clearance inside the closed communication manhole is not less than 1.8 m; meanwhile, 0.3-0.5 m of covering soil is reserved on the top plate of the communication manhole well, so that a working well is closed, asphalt is laid, and the bottom depth of the communication manhole well is about 2.3-2.4 m;
(3) the depth of town road rainwater inspection shaft is generally controlled to be 2.0m, and the interior drain pipe of cable well sump pit need be higher than rainwater inspection well pipe top elevation and just can guarantee that the downspout does not flow into the cable well, because cable shaft bottom elevation often is less than the downspout elevation in the actual engineering, and the unable whole rainwater that flows into in the cable well leads to the cable well to be flooded by ponding throughout the year. If the depth of the rainwater inspection well is increased, the rainwater inspection well is not economical, accumulated water in the cable well mainly is rainwater seeped under the cable well cover and underground water seeped into cracks of the cable well wall body and the bottom plate, the water quantity is not large, but long-term accumulated water can cause cable well cables, particularly strong electric cables to be soaked in the water, the safety of cable work and maintenance personnel is affected, and the accumulated water in the well needs to be timely discharged.
Chinese patent application publication No. CN104278733A discloses a cable well automatic drainage system, which comprises a cable well, a water delivery pipeline and a water storage well, wherein the cable well is divided into a well one, a well two, a well three and a well four, the water delivery pipeline is divided into a pipeline one, a pipeline two, a pipeline three and a pipeline four, the well one is communicated with the well two through the pipeline one, the well two is communicated with the water storage well through the pipeline two, the well three is communicated with the water storage well through the pipeline three, the well four is communicated with the water storage well through the pipeline four, and the water storage well is additionally provided with an automatic drainage device. Although the automatic drainage system of the cable well can collect accumulated water in the cable well into the water storage well to a certain extent, the automatic drainage system of the cable well has the problems of large construction amount, high cost and no utilization of the existing facility equipment.
Disclosure of Invention
In view of this, the utility model aims at providing a cable well and pressure flow automatic drainage device thereof makes full use of current rainwater drainage facility, satisfies the requirement of cable well catchment drainage.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model discloses at first provide a cable well pressure flow automatic drainage device, including the sump pit, the top of sump pit is equipped with the grid apron, be equipped with in the sump pit be used for with the suction pump that ponding in the sump pit was taken out.
Further, a liquid level sensor for measuring the water level of the accumulated water is also arranged in the water collecting pit;
the automatic water level controller is characterized by further comprising a control box, wherein a controller is arranged in the control box, and the controller is in signal connection with the water suction pump and the liquid level sensor respectively.
Furthermore, a grating cover plate is arranged on the upper cover of the water collecting pit, and a grating clamping groove positioned below the grating cover plate is arranged in the water collecting pit; the water suction pump adopts a submersible sewage pump.
The utility model also provides a cable well, including cable well body, the bottom of cable well body is installed and is equipped with as above cable well pressure flow automatic drainage device, the outlet pipe and the municipal rainwater drainage system of suction pump are linked together.
Furthermore, an opening is formed in the bottom surface of the cable well body, and the cable well pressure flow automatic drainage device is installed in the opening, so that the height of the water collecting opening is not higher than the height of the bottom surface of the cable well body.
Further, waterproof rubber is arranged between the water collecting pit and the opening; the water collecting pit is made of nodular cast iron.
Further, the water collecting pit and the cable well body are made of the same material and are arranged into a whole.
Furthermore, the outlet pipe of suction pump upwards extends the setting and is in get into behind the preformed hole on the grid cover plate this is internal for the cable well, just the outlet pipe is including being close to the riser section that cable well body lateral wall set up, be equipped with manometer, check valve and gate valve on the riser section.
Furthermore, be equipped with waterproof sleeve pipe on the lateral wall of cable well body, the outlet pipe of suction pump is followed waterproof sleeve pipe is worn out the back and is linked together with municipal rainwater drainage system.
Furthermore, cable duct pipes are arranged on two opposite side walls of the cable well body, and the waterproof sleeves are perpendicular to the cable duct pipes.
The beneficial effects of the utility model reside in that:
the utility model discloses a cable well through the automatic drainage device of bottom installation cable well pressure stream at cable well, utilizes the ponding in sump pit gathering cable well, and then usable suction pump takes out the ponding in the sump pit to municipal rainwater drainage system (like municipal rainwater inspection shaft) discharge, guarantees no longer ponding in the cable well, can satisfy the requirement of cable well catchment drainage.
Through setting up sump pit and cable well body components of a whole that can function independently, it is usable the utility model discloses a cable well pressure flow automatic drainage device directly upgrades the transformation to current cable well, only needs to set up the opening in the bottom of current cable well promptly to with cable well pressure flow automatic drainage device after the mill prefabrication directly assemble in the opening below can, the transformation construction volume is little, simple and convenient, satisfies the requirement of assembled construction.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:
fig. 1 is a schematic structural view of an embodiment of a cable well according to the present invention;
fig. 2 is a detail a of fig. 1.
Description of reference numerals:
1-a water collecting pit; 2-a water pump; 3-a liquid level sensor; 4-a control box; 5-a controller; 6-a grid clamping groove; 7-a wireline well body; 8-a grid cover plate; 9-waterproof rubber; 10-water outlet pipe; 10 a-a riser section; 11-pressure gauge; 12-a check valve; 13-a gate valve; 14-a waterproof sleeve; 15-cable duct bank; 16-alarm.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Fig. 1 is a schematic structural diagram of an embodiment of a cable well according to the present invention. The cable well of the embodiment comprises a cable well body 7, and the bottom of the cable well body 7 is provided with a cable well pressure flow automatic drainage device. The automatic drainage device of cable well pressure flow of this embodiment, including sump 1, the top of sump 1 is equipped with the water catch bowl, is equipped with the suction pump 2 that is used for taking ponding in the sump 1, and the suction pump 2 of this embodiment adopts stealthily dirty pump. The outlet pipe 10 of suction pump 2 is linked together with municipal rainwater drainage system, and is concrete, and the outlet pipe 10 of suction pump 2 is linked together with the rainwater inspection shaft, and usable current municipal rainwater drainage system discharges ponding, and need not set up alone and hold the well, and is simple and convenient.
Further, a liquid level sensor 3 for measuring the water level of the accumulated water is also arranged in the water collecting pit 1; the automatic drainage device of cable well pressure flow of this embodiment still includes control box 4, is equipped with controller 5 in the control box 4, and controller 5 is connected with suction pump 2 and level sensor 3 electricity respectively. Specifically, the controller 5 controls the start and stop of the water pump 2 according to the accumulated water level data measured by the liquid level sensor 3. When the water level in the sump 1 exceeds the pump starting water level, the controller 5 controls the water pump 2 to start to pump accumulated water; when the water level in the sump 1 is lower than the pump stopping water level, the controller 5 controls the water suction pump 2 to stop, so that the water suction pump 2 is prevented from idling; an alarm 16 can be arranged in the control box 4, and when the water level in the water collecting pit 1 exceeds the alarm water level, the controller 5 controls the alarm 16 to give an alarm.
Specifically, the power supply system of the water pump in the sump 1 of the embodiment adopts 380V voltage, the power supply is led to the box transformer on the municipal road, the power line can be led to the cable well through the cable in the 10KV power line pipe or the street lamp line pipe on the municipal road, and the box transformer can be combined with the street lamp lighting box. The water level signal and the start-stop signal of the water pump in the sump 1 are linked with the controller 5 in the control box 4 through weak current circuits, the weak current circuits can be led to a cable well from a reserved weak current exhaust pipe in a 10KV power exhaust pipe of a municipal road or a reserved exhaust pipe in a street lamp exhaust pipe through a wire, and the control box 4 can be built with a street lamp lighting control cabinet.
Further, the catch basin upper cover has been installed grid apron 8, is equipped with grid draw-in groove 6 that is located grid apron 8 below in the sump pit 1, avoids the maintainer to fall into in the sump pit 1.
Further, the bottom surface of cable well body 7 is equipped with opening 8, and automatic drainage device of cable well pressure stream installs in opening 8 to make the bottom surface height that highly is not higher than cable well body 7 of water catch bowl, so, ponding in the cable well body 7 can all converge to sump pit 1 in, guarantees not ponding in the cable well body 7.
Further, waterproof rubber 9 is arranged between the water collecting pit 1 and the opening 8, so that underground water is prevented from permeating into the cable well body 7. The sump 1 is made of nodular cast iron, can be conveniently prefabricated in a factory, and can prevent rusting.
The through of this embodiment sets up sump pit and cable well body components of a whole that can function independently, and is usable the utility model discloses a cable well pressure flow automatic drainage device directly upgrades the transformation to current cable well, only needs to set up the opening in the bottom of current cable well promptly to with cable well pressure flow automatic drainage device after the mill is prefabricated directly assemble in the opening below can, the transformation construction volume is little, simple and convenient, satisfies the requirement of assembled construction. Namely the utility model discloses a cable well pressure flow automatic drainage device adopts the assembled finished product, both applicable in newly-built cable well, also is applicable to current cable well drainage system and reforms transform the engineering. Of course, when a cable well is newly built, the sump 1 and the cable well body 7 can be made of the same material and integrated, and the principle is equivalent and will not be described again.
Further, the water outlet pipe 10 of the water suction pump 2 extends upwards through the reserved hole formed in the grating cover plate 8 and then enters the cable well body 7, the water outlet pipe 10 comprises a vertical pipe section 10a arranged close to the side wall of the cable well body 7, a pressure gauge 11, a check valve 12 and a gate valve 13 are arranged on the vertical pipe section 10a, and water pressure in the vertical pipe section 10a can be detected and water flow can be prevented from flowing backwards. Specifically, a waterproof sleeve 14 is arranged on the side wall of the cable well body 7, and a water outlet pipe 10 of the water suction pump 2 penetrates out of the waterproof sleeve 14 and then is communicated with a municipal rainwater drainage system. The two opposite side walls of the cable well body 7 of the embodiment are provided with cable duct pipes 15, the waterproof sleeves 14 are perpendicular to the cable duct pipes 15, and the automatic drainage device for cable well pressure flow is arranged close to the side walls provided with the waterproof sleeves 14.
The cable well of this embodiment, through the automatic drainage device of installation cable well pressure stream in the bottom at the cable well, utilize the ponding in sump pit gathering cable well, then usable suction pump takes out the ponding in the sump pit to municipal rainwater drainage system (like municipal rainwater inspection well) discharge, guarantees no longer ponding in the cable well, can satisfy the requirement of cable well catchment drainage.
Note: wireline wells described herein include, but are not limited to, power and communication wells.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.