CN113136936A - Drainage device of cable shaft - Google Patents
Drainage device of cable shaft Download PDFInfo
- Publication number
- CN113136936A CN113136936A CN202110548325.3A CN202110548325A CN113136936A CN 113136936 A CN113136936 A CN 113136936A CN 202110548325 A CN202110548325 A CN 202110548325A CN 113136936 A CN113136936 A CN 113136936A
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- Prior art keywords
- drainage
- cable
- well
- controller
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Public Health (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of power supply of a power grid, in particular to a drainage device of a cable well. The drainage device comprises a controller and a drainage pump, the drainage pump is electrically connected with the controller, the drainage pump comprises a drainage pipeline, two ends of the drainage pipeline are respectively arranged in a water collecting well, the cable well is internally provided with a plurality of liquid level sensors, the liquid level sensors are arranged at different depths of the cable well, the liquid level sensors are used for detecting the water level range value of the cable well and transmitting the water level range value to the controller, the controller controls the drainage pump to work, the controller comprises a water flow monitoring unit, the controller determines the water level range value in the cable well according to the liquid level sensor at the highest position in water, and the water level warning threshold value is preset in combination with the cable well to determine the pre-drainage amount of the cable well, and the water flow monitoring unit is used for monitoring the drainage amount of the drainage pump. Through adopting drainage device with the log raft play in the cable shaft, the staff overhauls the cable again, has avoided hoisting the cable and has maintained again, has effectively improved the efficiency of construction.
Description
Technical Field
The invention relates to the technical field of power supply of a power grid, in particular to a drainage device of a cable well.
Background
With the acceleration of urbanization and the increasing environmental requirements of cities, most urban cables are beginning to be implemented into the ground, and in order to facilitate the maintenance and branching of the cables, a cable well is usually required to be arranged at the line branching position.
The cable line construction and transformation projects are high in innovation history in recent years, and operation and maintenance need to enter a cable well for construction in the construction process and in the later period. The accumulated water prevents cable patrolmen from going down the well to carry out patrol, thus affecting patrol quality and causing the hidden trouble of cable operation to be unable to be found in time, thus not only affecting normal operation of cable, but also having risk of cable fault enlargement. The cable is soaked in water for a long time, the water corrodes the cable for a long time, the insulating property is reduced, the current-carrying capacity of the cable is reduced, and power failure accidents are caused by grounding and short-circuiting of electrical equipment such as a 10kv high-voltage cable distribution box, a ring main unit, a distribution box and a box-type distribution transformer.
When having ponding in the well, the operation in the well is not accurate to get into, and when the staff overhauld the cable, need hoist the cable, leads to the staff to overhaul the inconvenient problem of maintaining to the cable, has also influenced the efficiency of construction simultaneously.
Disclosure of Invention
To the technical problem that above-mentioned exists, this application provides a drainage device of cable shaft, improves the efficiency of construction.
In order to achieve the purpose, the invention provides the following technical scheme:
a drainage device of a cable well is used for draining water in the cable well into a water collecting well and comprises a controller, a drainage pump and a power supply module, wherein the drainage pump is electrically connected with the controller;
the drainage pump comprises a drainage pipeline, one end of the drainage pipeline is arranged in the water collecting well, and the other end of the drainage pipeline is arranged in the cable well;
a plurality of liquid level sensors are arranged in the cable well, the liquid level sensors are arranged at different depths of the cable well, and the liquid level sensors are electrically connected with the controller;
the controller comprises a water flow monitoring unit, the controller determines a water level range value in the cable well according to the liquid level sensor at the highest position in water, and determines the pre-drainage amount of the cable well by combining a preset water level alarm threshold value of the cable well, and the water flow monitoring unit is used for monitoring the drainage amount of the drainage pump.
Preferably, the controller further includes a judging unit, the water flow monitoring unit is configured to feed back the drained water amount to the judging unit, and the judging unit is configured to judge whether to turn off the drain pump according to the pre-draining water amount.
Preferably, the exhaust module comprises an exhaust pipeline and a suction pump, the exhaust pipeline is connected with the suction pump, and the suction pump is electrically connected with the controller.
Preferably, the exhaust module further comprises a biogas filter disposed in the exhaust duct.
Preferably, the exhaust module further comprises a biogas probe, the biogas probe is connected with the controller, and the biogas probe is used for detecting the biogas amount and transmitting the biogas amount to the controller.
Preferably, an alarm liquid level sensor is arranged in the water collecting well, the alarm liquid level sensor is connected with the controller, and the alarm liquid level sensor is used for detecting the water level value of the water collecting well and transmitting the water level value to the controller.
Preferably, the controller is connected with an alarm device, and the controller is used for controlling the alarm device to give an alarm when the water level value exceeds the bearing threshold value of the water collecting well.
Preferably, one end of the drainage pipeline close to the cable well is provided with a filter screen.
Preferably, the cable well and the water collecting well are both provided with indicating lamps, and the indicating lamps are used for changing different colors to indicate water level range values of the cable well and the water collecting well.
Preferably, a vent pipe is arranged on the cable well, the cable well is communicated with the vent pipe, and the vent pipe is connected with a fan.
Compared with the prior art, the invention has the following beneficial effects:
the drainage device of cable shaft of this embodiment includes controller and drain pump, the drain pump is connected with the controller electricity, the drain pump includes drainage pipe, the drainage pipe both ends are respectively at the sump pit, in the cable shaft, be provided with a plurality of level sensor in the cable shaft, a plurality of level sensor set up the different degree of depth at the cable shaft, level sensor is used for detecting the water level range value of cable shaft and transmits for the controller, the controller is according to the water level range value in the highest level sensor confirms the cable shaft in the aquatic, and combine the cable shaft to predetermine the water level warning threshold value and confirm the preliminary drainage volume of cable shaft, the controller includes water flow monitoring unit, controller control drain pump work, water flow monitoring unit is used for monitoring the displacement of drain pump. Through adopting drainage device with the log raft play in the cable shaft, the staff overhauls the cable again, has avoided hoisting the cable and has maintained again, has effectively improved the efficiency of construction. In addition, the different degree of depth positions of cable shaft set up level sensor, and level sensor is used for feeding back the water deposit volume in the cable shaft, and the controller starts drain pump work according to the water deposit volume, and the accurate control displacement of discharge monitoring unit, the drainage device of this application can control the displacement effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of a drainage apparatus for a cable well according to an embodiment of the present invention.
Illustration of the drawings: the system comprises a cable well 1, a water collecting well 2, a drainage pump 3, a drainage pipeline 4, a methane probe 5, an exhaust pipeline 6 and an air pump 7
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in 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 apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1, a drainage device of a cable well, for draining water in the cable well into a water collecting well, includes a controller, a drainage pump and a power module, wherein the drainage pump is electrically connected with the controller;
the drainage pump comprises a drainage pipeline, one end of the drainage pipeline is arranged in the water collecting well, and the other end of the drainage pipeline is arranged in the cable well;
the cable well is internally provided with a plurality of liquid level sensors, the liquid level sensors are arranged at different depths of the cable well, and the liquid level sensors are electrically connected with the controller;
the controller comprises a water flow monitoring unit, the controller determines a water level range value in the cable well according to a liquid level sensor at the highest position in water, and determines the pre-drainage quantity of the cable well by combining a preset water level warning threshold value of the cable well, and the water flow monitoring unit is used for monitoring the drainage quantity of the drainage pump.
The controller can adopt a smt32 single chip microcomputer or a PLC controller. The drainage pipeline 6 can adopt a PVC pipe. The liquid level sensor, the controller and the draining pump are all electrically connected with the power module.
Specifically, when using, a plurality of level sensor set up the position department of the different degree of depth of cable shaft respectively, and level sensor feeds back the water level condition of cable shaft to the controller, and level sensor detects whether there is water in the position promptly, and the controller passes through the liquid level sensor of aquatic highest position and judges the scope value of current cable shaft water level. And a water level alarm threshold value is set in the controller, if the actual water level of the cable well exceeds the alarm threshold value, the controller controls the drainage pump to start working, and the drainage pump discharges water in the cable well into the water collecting well through the drainage pipeline. The controller combines the water level warning threshold value to confirm the pre-drainage volume of cable shaft according to the scope value of the water level in the cable shaft that has judged, and the controller includes water flow monitoring unit, and water flow monitoring unit is used for monitoring the drainage volume of drain pump, and remaining water volume does not influence staff's maintenance in the cable shaft in the actual operation can, through setting up level sensor, water flow monitoring unit, drainage device can control the drainage volume effectively.
In an optional embodiment, the controller further comprises a judging unit, the water flow monitoring unit is used for feeding back the drained water amount to the judging unit, and the judging unit is used for judging whether to turn off the drainage pump according to the pre-drainage amount.
The cable well water will produce biogas with the age. The marsh gas is formed by the decay and fermentation of objects, is the flavor of methane CH4, can cause poisoning of workers, threatens the life safety of maintenance and construction personnel, and even can cause fire to burn out electrical equipment. In an optional embodiment, the drainage device further comprises an exhaust module, the exhaust module comprises an exhaust pipeline and a suction pump, the exhaust pipeline is connected with the suction pump, and the suction pump is electrically connected with the controller. The controller controls the work of the air pump, and the air pump discharges the gas in the cable well into the water collecting well through the exhaust pipeline.
Biogas is a gas mixture containing hydrogen sulfide, which is a toxic gas. Optionally, the exhaust module further comprises a biogas filter, and the biogas filter is arranged in the exhaust pipeline. A desulfurizer is placed in the biogas filter, and the desulfurizer is an iron oxide desulfurizer.
In order to monitor the biogas amount in the cable well more accurately, the exhaust module further comprises a biogas probe, the biogas probe is connected with the controller and used for detecting the biogas amount, the biogas probe transmits the biogas amount to the controller, and the controller controls the work of the air pump according to the biogas amount.
In an alternative embodiment, an alarm level sensor is provided in the sump, the alarm level sensor being connected to the controller. The alarm liquid level sensor detects the water level value of the water collecting well and then transmits the water level value to the controller, the controller carries out centralized judgment and operation, and if the water level value exceeds the bearing capacity of the water collecting well, the controller controls the water suction pump to stop working.
Optionally, the controller is connected with an alarm device, the water collecting well is provided with a bearing threshold of water quantity, and if the water level value exceeds the bearing threshold of the water collecting well, the controller starts the alarm device to remind a worker. The controller can also be connected with a wireless communication device and is connected with the monitoring center through the wireless communication device, so that remote centralized control is realized, and centralized monitoring is carried out on each cable well.
In an alternative embodiment, the end of the drainage pipeline close to the cable shaft is provided with a filter screen. Can avoid rubbish debris etc. to enter into the inside of drainage pipe through setting up the filter screen to block up drainage pipe's inside, lead to drainage device's drainage effect greatly reduced.
In an optional implementation mode, the cable well and the water collecting well are provided with indicating lamps, the indicating lamps can be used for judging water level range values in the cable well and the water collecting well, the indicating lamps change different colors to represent different water level range values, and workers can observe the water level conditions of the cable well and the water collecting well visually. The green indicator light of the cable well represents that the water level value is safe, and workers can directly overhaul the cable; the indicating lamp of the cable well is yellow to indicate that the water level value exceeds the safety threshold value, and the drainage pump needs to be started to work; the red indicator light of the cable well represents that the water level value exceeds the warning threshold value, and the drainage pump is started to work after workers need to firstly investigate the surrounding situation of the cable well. The indicating lamp of the water collecting well is green, which represents that the water level value is very low, and the water collecting well can receive more water discharge; when the indicating lamp of the water collecting well is yellow to represent the water level value, the indicating lamp can still continuously receive certain water discharge amount within a safety range; the indication lamp of the water collecting well is red to indicate that the water level value exceeds the warning range value, and drainage needs to be stopped at the moment.
In an optional embodiment, a ventilation pipe is arranged on the cable well, the cable well is communicated with the ventilation pipe, the ventilation pipe is connected with a fan, the ventilation of the cable well can be kept through the fan, the cable well can be prevented from being overheated in summer, the ventilation is realized through the ventilation pipe, and the dehumidification effect can be achieved. Furthermore, a temperature and humidity sensor can be arranged in the cable well and connected with a controller, the controller is connected with a display and a fan in the ventilation pipe, and when the temperature is too high or the humidity is too high, the controller controls the fan to work, so that the temperature and humidity environment temperature of the cable well is kept.
To sum up, the drainage device of cable shaft of this embodiment includes controller and drain pump, and the drain pump includes drainage pipe, and the drainage pipe both ends are provided with a plurality of level sensor respectively in sump pit, cable shaft in the cable shaft, and level sensor is used for detecting the water level range value of cable shaft and transmits for the controller, and the controller is according to water level range value control drain pump work, and the controller includes water flow monitor unit, and water flow monitor unit is used for monitoring the displacement of drain pump. Through adopting drainage device with the log raft play in the cable shaft, the staff overhauls the cable again, has effectively improved the efficiency of construction.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A drainage device of a cable well is used for draining water in the cable well into a water collecting well, and is characterized by comprising a controller and a drainage pump, wherein the drainage pump is electrically connected with the controller;
the drainage pump comprises a drainage pipeline, one end of the drainage pipeline is arranged in the water collecting well, and the other end of the drainage pipeline is arranged in the cable well;
a plurality of liquid level sensors are arranged in the cable well, the liquid level sensors are arranged at different depths of the cable well, and the liquid level sensors are electrically connected with the controller; the controller comprises a water flow monitoring unit, the controller determines a water level range value in the cable well according to the liquid level sensor at the highest position in water, and determines the pre-drainage amount of the cable well by combining a preset water level alarm threshold value of the cable well, and the water flow monitoring unit is used for monitoring the drainage amount of the drainage pump.
2. The drainage apparatus of a cable well according to claim 1, wherein the controller further comprises a judging unit for feeding back the drained water amount to the judging unit, and the judging unit is for judging whether to turn off the drainage pump according to the pre-drainage amount.
3. The wireline well drainage apparatus of claim 1, further comprising an exhaust module comprising an exhaust conduit and a suction pump, the exhaust conduit being connected to the suction pump, the suction pump being electrically connected to the controller.
4. A drainage arrangement for a wireline well according to claim 3, wherein the exhaust module further comprises a biogas filter, which is arranged in the exhaust conduit.
5. The wireline well drainage apparatus of claim 3, wherein the exhaust module further comprises a biogas probe connected to the controller, the biogas probe configured to detect and transmit a volume of biogas to the controller.
6. The drainage apparatus of a cable well according to claim 1, wherein an alarm level sensor is disposed in the water collection well, the alarm level sensor being connected to the controller, the alarm level sensor being configured to detect a water level value of the water collection well and transmit the water level value to the controller.
7. A drainage arrangement for a wireline well according to claim 6, wherein an alarm device is connected to the controller, the controller being adapted to control the alarm device to alarm when the water level value exceeds a loading threshold of the sump well.
8. The drainage apparatus of a cable shaft according to claim 1, wherein a filter screen is provided at an end of the drainage pipeline adjacent to the cable shaft.
9. The drainage device of a cable well according to claim 1, wherein indicator lights are arranged on the cable well and the water collecting well, and the indicator lights are used for indicating water level range values of the cable well and the water collecting well by changing different colors.
10. The drainage apparatus of a cable shaft according to claim 1, wherein a ventilation pipe is arranged on the cable shaft, the cable shaft is communicated with the ventilation pipe, and the ventilation pipe is connected with a fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110548325.3A CN113136936A (en) | 2021-05-19 | 2021-05-19 | Drainage device of cable shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110548325.3A CN113136936A (en) | 2021-05-19 | 2021-05-19 | Drainage device of cable shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113136936A true CN113136936A (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110548325.3A Pending CN113136936A (en) | 2021-05-19 | 2021-05-19 | Drainage device of cable shaft |
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| CN (1) | CN113136936A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236190A (en) * | 2009-03-30 | 2010-10-21 | Kubota Corp | Controller for submerged pump, manhole pump device, and operation method for the manhole pump device |
| CN205399650U (en) * | 2016-02-19 | 2016-07-27 | 湖北旭达电力科技有限公司 | Automatic draining system capable of remotely controlling electric cable well |
| US20170118907A1 (en) * | 2015-11-03 | 2017-05-04 | Nuhn Industries Ltd. | Automated manure agitation and transfer |
| CN206396801U (en) * | 2017-01-12 | 2017-08-11 | 国家电网公司 | Cable work well and its drainage arrangement |
| CN207503056U (en) * | 2017-11-17 | 2018-06-15 | 云南电网有限责任公司红河供电局 | A kind of cable shaft self-draining arrangement |
| CN212569553U (en) * | 2020-07-07 | 2021-02-19 | 上海泰荣智能科技有限公司 | Water level monitoring and over-limit automatic drainage device for building water accumulation well |
-
2021
- 2021-05-19 CN CN202110548325.3A patent/CN113136936A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010236190A (en) * | 2009-03-30 | 2010-10-21 | Kubota Corp | Controller for submerged pump, manhole pump device, and operation method for the manhole pump device |
| US20170118907A1 (en) * | 2015-11-03 | 2017-05-04 | Nuhn Industries Ltd. | Automated manure agitation and transfer |
| CN205399650U (en) * | 2016-02-19 | 2016-07-27 | 湖北旭达电力科技有限公司 | Automatic draining system capable of remotely controlling electric cable well |
| CN206396801U (en) * | 2017-01-12 | 2017-08-11 | 国家电网公司 | Cable work well and its drainage arrangement |
| CN207503056U (en) * | 2017-11-17 | 2018-06-15 | 云南电网有限责任公司红河供电局 | A kind of cable shaft self-draining arrangement |
| CN212569553U (en) * | 2020-07-07 | 2021-02-19 | 上海泰荣智能科技有限公司 | Water level monitoring and over-limit automatic drainage device for building water accumulation well |
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Application publication date: 20210720 |