CN211480761U - Automatic drainage and dehumidification device for cable trench - Google Patents
Automatic drainage and dehumidification device for cable trench Download PDFInfo
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- CN211480761U CN211480761U CN202020324247.XU CN202020324247U CN211480761U CN 211480761 U CN211480761 U CN 211480761U CN 202020324247 U CN202020324247 U CN 202020324247U CN 211480761 U CN211480761 U CN 211480761U
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Abstract
The utility model provides a cable pit automatic drainage dehydrating unit, including drainage module, dehumidification module, power control box, wire, the drainage module includes ponding well, water pump, the automatic liquid level controller of water pump, drain pipe, water pump contactor, the ponding well sets up the low department at the cable pit, the water pump includes the delivery port, drain pipe and delivery port are connected, the dehumidification module includes axial fan, U type pipeline, humidity transducer, fan contactor, U type pipeline sets up on the apron of cable pit, axial fan sets up in U type pipeline, humidity transducer sets up in the cable pit. The utility model discloses a set up drainage module and dehumidification module, can monitor the circumstances such as cable pit ponding, humidity, temperature, select automatic or artificial control drainage and dehumidification, reduced the substation equipment trouble, improve the fan availability, increase the electric quantity profit, the resource of using manpower sparingly, and can assemble equipment as required, improve substation equipment reliability.
Description
Technical Field
. The utility model belongs to the technical field of the cable pit is maintained, concretely relates to cable pit automatic drainage dehydrating unit.
Background
The cable trench is an underground pipeline for laying and replacing electric power or telecommunication cable facilities, is also an enclosure structure of laid cable facilities, and has pipeline structure forms of rectangle, circle, arch and the like. The cable trench is generally characterized in that the cable trench is a trench with a cover plate, the cover plate needs to be uncovered when cables are laid and maintained, the cable trench is complicated and inconvenient, and dirt and accumulated water are easy to deposit in the trench. However, because of simple civil construction and low cost, the cable trench cover plate is often adopted in transformer substations and medium and small power plants, and a plurality of transformer substations usually use the cable trench cover plate as a part of inspection and operation path. The cable trench is provided with a cable support, which is usually made of a metal material and is fixed to the trench wall by welding or screws. The cable is supported by the bracket and keeps a certain distance with the bottom of the ditch. The cable in the cable trench usually takes fire-proof measures, including painting fire-proof paint, blocking and isolating, etc. The cable trench is provided with a blocking partition wall at the position of entering a building (comprising a control room and a switch room) so as to prevent smoke and fire from spreading to the interior when the cable catches fire. In addition, small animals can be prevented from entering the room.
However, since the cable trench is lower than the horizontal ground, when the environmental humidity is high, moisture can permeate into the cable trench through the wall and the ground, which is very easy to cause safety accidents and affects the safe operation of the electrical equipment. In particular, power plants belonging to special geological environments are more vulnerable. If belong to the company of deciding the limit in northern area of Shanxi, generally in 5 months to 10 months per year, following the heavy rainfall in succession, the yellow land that lacks the vegetation seeps water slowly, form large-scale surface runoff easily, lead to wind field transformer substation drainage not smooth, rivers pass through cable trench cover etc. and get into transformer substation's cable pit, ponding that the ditch formed, moisture leads to cable ageing to accelerate, power equipment condensation such as cubical switchboard corrodes seriously, to electric wire netting and transformer and fan equipment's safe operation, great hidden danger has been constituted, especially for some cable joint departments, ponding and moisture lead to cable overlap joint easy ageing, make contact resistance grow after ageing. For large current, the temperature is easy to rise, and if the temperature is not found to rise in time, fire and even fire can be caused. The wind power station has more current collecting lines and more corresponding 35KV switch cabinets, the joint of the lead-in cable is easy to have faults such as discharge breakdown and the like due to humidity, the fan is forced to be stopped emergently after the faults occur, certain impact can be caused to the fan in the stopping process, after the cable head is broken down each time, field maintenance personnel spend more than one day to recover, the reasons are that firstly, cable replacement wastes time and labor, and on the other hand, recovery work of more than ten fans on the current collecting line also wastes time and labor; the electric quantity loss is more than 20 ten thousand kilowatt hours when the cable head breakdown fault happens once due to the moisture, and in addition, some components on the fan can be damaged in the impact, because the moisture is a small problem, the economic loss is more than 10 ten thousand yuan each time. After multiple fault occurrence summaries, faults are easy to occur at night or in the early morning, and the faults need to be processed overnight after the faults occur, so that great examination is brought to field maintainers.
Disclosure of Invention
The utility model provides a cable pit automatic drainage dehydrating unit, the circumstances such as control cable pit ponding, humidity, temperature reduce the substation equipment trouble, improve the fan availability, increase the electric quantity profit, the resource of using manpower sparingly.
The technical scheme of the utility model is that: the utility model provides a cable pit automatic drainage dehydrating unit, includes drainage module, dehumidification module, power control box, wire, drainage module includes ponding well, water pump, the automatic liquid level controller of water pump, drain pipe, water pump contactor, the ponding well sets up the low department at the cable pit, the automatic liquid level controller one end of water pump is passed through the wire and is connected with power control box, and the other end passes through the wire and connects with water pump contactor, water pump in proper order, the water pump includes the delivery port, the drain pipe is connected with the delivery port, the dehumidification module includes axial fan, U type pipeline, humidity transducer, fan contactor, U type pipeline sets up on the apron of cable pit, axial fan sets up in U type pipeline, humidity transducer sets up in the cable pit, humidity transducer one end passes through the wire and is connected with power control box, and the other end passes through the wire and connects with fan contactor in proper order, The axial flow fan is electrically connected.
According to the scheme, a normally closed contact of the water pump contactor is connected in series in a loop of the fan contactor.
The scheme is further that the drainage module further comprises a water pump retainer, and the water pump is arranged at the bottom of the water accumulation well through the water pump retainer, so that the water pump is guaranteed to be stably placed all the time.
The scheme is further that the drain pipe comprises a drain hose, a buried pipe and a drain pipe, the drain hose is connected with the water outlet, one end of the buried pipe is connected with the drain hose, and the other end of the buried pipe extends out of the ground communicated drain pipe.
The scheme is further that the outlet of the U-shaped pipeline faces downwards, an iron wire filter screen is welded at the outlet of the U-shaped pipeline, and small animals are prevented from entering the cable trench.
The scheme is further that the smoke detection device further comprises a smoke sensor, the smoke sensor is arranged at the position close to the air outlet of the axial flow fan, and the smoke sensor is electrically connected with the power supply control box through a wire.
The scheme is further that the power control box comprises a display screen, a power button and an alarm indicator lamp, wherein the power button comprises a drainage module power button and a dehumidification module power button.
The scheme is further that the automatic water pump liquid level controller comprises a high liquid level probe and a low liquid level probe, and the automatic water pump liquid level controller is distributed in the water collecting well according to the height.
The scheme is further that the number of the dehumidification modules is two, and the dehumidification modules are symmetrically arranged on two sides of the drainage module.
The utility model has the advantages that: the utility model discloses a set up drainage module and dehumidification module, can monitor the condition such as humidity in the cable pit, ponding, both utilize different sensors to realize water pump and axial fan automatic control, also through setting up the power control box, realize artificial control, in rainy season, can reduce the problem that operating personnel's frequent observation cable pit ponding, during non-rainy season, can artificial this system outage isolation, can just drop into in rainy season, the system also need not make very big change to former cable pit, and the implementation is convenient, reduces substation equipment trouble, and manpower resources are saved; the utility model discloses a water pump contactor and fan contactor's connected mode has realized the prioritization of water pump start-up, can't start the water pump when starting the axial fan, can start the axial fan when starting the water pump, avoids because the inside and outside difference in temperature is big more the cable head breakdown fault that causes; the utility model can put in or remove equipment according to different seasons, thereby improving the reliability of the power transformation equipment and the availability of the fan; the utility model discloses the operating personnel can see the cable pit humidity condition through the display screen is audio-visual to according to different seasons, can the independent choice humidity control scope.
Drawings
FIG. 1 is a schematic structural view of an automatic drainage and dehumidification device for a cable trench of the present invention;
FIG. 2 is a circuit control diagram of a water pump and an axial flow fan of the automatic drainage and dehumidification device for a cable trench of the present invention;
wherein: 1. the device comprises a water collecting well, 2, a water pump automatic liquid level controller, 3, a water pump, 4, a drain pipe, 5, a power supply control box, 6, an alarm indicator light, 7, a power supply button, 8, a U-shaped pipeline, 9, an axial flow fan, 10, a humidity sensor, 11, a smoke sensor, 12 and a cover plate.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.
The utility model relates to a cable pit automatic drainage dehydrating unit, the structure is shown in figure 1 in the concrete embodiment, the whole device is arranged in the cable pit, including drainage module, dehumidification module, power control box 5, wire, the drainage module includes water accumulation well 1, water pump 3, water pump automatic liquid level controller 2, drain pipe 4, water pump contactor, water accumulation well 1 is arranged at the low position of the cable pit, water pump automatic liquid level controller 2 one end is connected with power control box 5 through the wire, the other end is connected with water pump contactor, water pump 3 in proper order through the wire, water pump 3 includes the delivery port, drain pipe 4 is connected with the delivery port, the dehumidification module includes axial fan 9, U type pipeline 8, humidity transducer 10, fan contactor, U type pipeline 8 is arranged on cover plate 12 of the cable pit, axial fan 9 is arranged in U type pipeline 8, humidity transducer 10 sets up in the cable pit, humidity transducer 10 one end is connected with power control box 5 through the wire, and the other end passes through the wire and in proper order with fan contactor, axial fan 9 electric connection.
After raining, the larger the temperature difference between the inside and the outside of the switch cabinet is, the more easily the cable head breakdown fault occurs, so when the water pump 3 is put into use, no matter whether the humidity reaches the set value, the axial flow fan 9 is put into use, and therefore when the drainage module operates, no matter whether the humidity reaches the set value, the axial flow fan 9 is started along with the operation, but the start of the water pump 3 is only controlled by the automatic water pump liquid level controller 2 and the power supply control box 5, namely when the axial flow fan 9 is started, the water pump 3 cannot be driven to operate, the control circuit is shown in fig. 2, and the normally closed contact of the water pump contactor is connected in series in the loop of the.
In order to protect the normal operation of the water pump 3 and prevent the water pump 3 from toppling over in the operation process, the drainage module further comprises a water pump retainer, and the water pump 3 is arranged at the bottom in the water accumulation well 1 through the water pump retainer, so that the water pump 3 is ensured to be stably placed all the time.
Further in this embodiment, drain pipe 4 includes drainage hose, buried pipe, drainage hose and delivery port are connected, buried pipe one end and drainage hose are connected, and the other end stretches out ground UNICOM drainage pipe, and the operating personnel changes drainage hose once every year, guarantees drainage device normal use.
Further in this embodiment, 8 exports of U type pipeline are down, have avoided evening during moisture descends and enters into the cable pit, and 8 exit welding of U type pipeline have the iron wire filter screen, avoid the toy to get into the cable pit.
Further in this embodiment, still include smoke transducer 11, smoke transducer 11 sets up and is being close to axial fan 9 air outlet department, smoke transducer 11 passes through wire and 5 electric connection of power control box.
Further in this embodiment, power control box 5 includes display screen, power button 7, alarm indicator 6, power button 7 includes drainage module power button, dehumidification module power button, and the operating personnel can see the cable pit humidity condition through the display screen is audio-visual to according to different seasons, can the free choice humidity regulation and control scope, also can select artificial control drainage and dehumidification or automatic control through power button 7.
Further in this embodiment, automatic liquid level controller 2 of water pump includes high liquid level probe, low liquid level probe, according to high distribution in ponding well 1, monitors ponding well 1 internal water level, and water pump contactor circular telegram makes the power switch-on when the water level is high, and 3 start-up operations of water pump, fan contactor also circular telegram start-up axial fan 9 simultaneously, carry out drainage and dehumidification simultaneously, when detecting the water level low, water pump contactor and fan contactor outage close water pump 3 and axial fan 9, prevent 3 dry combustion method of water pump.
Further in this embodiment, dehumidification module figure is two, the symmetry sets up the both sides at the drainage module, axial fan 9 chooses for use 2000 hours per cubic meter circulation's anticorrosive type, dehumidification efficiency has further been improved, humidity transducer 10 monitoring cable pit that utilizes the dehumidification module internal humidity, when humidity transducer 10 measures the humidity that is higher than the setting value, the fan contactor gets the electricity, axial fan 9 begins to operate, when humidity is less than the setting value, the outage of fan contactor, axial fan 9 stall, open simultaneously and be close to axial fan 9 air outlet department and install smoke transducer 11 additional, under axial fan 9 extraction state, can trigger smoke transducer 11 the very first time, take precautions against the conflagration emergence.
Further in this embodiment, the model of the automatic water pump level controller 2 can be widely selected from DF-96C but not limited thereto, and the model of the humidity sensor 10 can be selected from YHW-200 or TDK0302 but not limited thereto.
The utility model discloses an in the embodiment, a cable pit automatic drainage dehydrating unit includes or drainage module, power control box 5, smoke transducer 11, wire, can drop into or remove equipment according to different seasons, improves the substation equipment reliability, improves the fan availability.
While the preferred embodiments of the present invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention by those skilled in the art without departing from the technical solution of the present invention.
Claims (9)
1. An automatic drainage and dehumidification device for a cable trench is characterized by comprising a drainage module, a dehumidification module, a power supply control box and a wire, wherein the drainage module comprises a water accumulation well, a water pump, an automatic water pump liquid level controller, a drain pipe and a water pump contactor, the water accumulation well is arranged at the lower part of the cable trench, one end of the automatic water pump liquid level controller is connected with the power supply control box through the wire, the other end of the automatic water pump liquid level controller is sequentially connected with the water pump contactor and the water pump through the wire, the water pump comprises a water outlet, the drain pipe is connected with the water outlet, the dehumidification module comprises an axial flow fan, a U-shaped pipeline, a humidity sensor and a fan contactor, the U-shaped pipeline is arranged on a cover plate of the cable trench, the axial flow fan is arranged in the U-shaped pipeline, the humidity sensor is arranged in the cable trench, one end, the other end is electrically connected with the fan contactor and the axial flow fan in sequence through a lead.
2. The automatic drainage and dehumidification device for the cable trench according to claim 1, wherein the normally closed contact of the water pump contactor is connected in series in a loop of the fan contactor.
3. The automatic drainage and dehumidification device for the cable trench as claimed in claim 1, wherein the drainage module further comprises a water pump holder, and the water pump is arranged at the bottom of the water accumulation well through the water pump holder.
4. The automatic drainage and dehumidification device for the cable trench as claimed in claim 1, wherein the drainage pipe comprises a drainage hose, a buried pipe and a drainage pipeline, the drainage hose is connected with the water outlet, one end of the buried pipe is connected with the drainage hose, and the other end of the buried pipe extends out of the drainage pipeline communicated with the ground.
5. The automatic water draining and dehumidifying device of claim 1, wherein the outlet of the U-shaped pipeline faces downward, and an iron wire filter screen is welded at the outlet of the U-shaped pipeline, so as to prevent small animals from entering the cable trench.
6. The automatic water draining and dehumidifying device of claim 1 further comprising a smoke sensor disposed near an air outlet of the axial flow fan, wherein the smoke sensor is electrically connected to the power control box through a wire.
7. The automatic drainage and dehumidification device for the cable trench of claim 1, wherein the power control box comprises a display screen, a power button and an alarm indicator light, and the power button comprises a drainage module power button and a dehumidification module power button.
8. The automatic drainage and dehumidification device for the cable trench as claimed in claim 1, wherein the automatic level controller for the water pump comprises a high level probe and a low level probe, and the high level probe and the low level probe are distributed in the water accumulation well according to heights.
9. The automatic drainage and dehumidification device for the cable trench as claimed in claim 1, wherein the number of the dehumidification modules is two, and the dehumidification modules are symmetrically arranged at two sides of the drainage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020324247.XU CN211480761U (en) | 2020-03-16 | 2020-03-16 | Automatic drainage and dehumidification device for cable trench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020324247.XU CN211480761U (en) | 2020-03-16 | 2020-03-16 | Automatic drainage and dehumidification device for cable trench |
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| CN211480761U true CN211480761U (en) | 2020-09-11 |
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| CN202020324247.XU Active CN211480761U (en) | 2020-03-16 | 2020-03-16 | Automatic drainage and dehumidification device for cable trench |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234569A (en) * | 2020-10-19 | 2021-01-15 | 国网新疆电力有限公司阿克苏供电公司 | Circular through type drainage dehumidification cable pit |
| CN112267539A (en) * | 2020-10-14 | 2021-01-26 | 江苏华世远电力技术有限公司 | Cable trench convenient to clean and treat rain sewage |
| CN114172108A (en) * | 2021-11-19 | 2022-03-11 | 国网江苏省电力有限公司连云港供电分公司 | Dehumidification drainage cable pit based on combined material |
| CN114498380A (en) * | 2021-12-15 | 2022-05-13 | 国网南通综合能源服务有限公司 | Power box electrical system for wharf shore power pile |
-
2020
- 2020-03-16 CN CN202020324247.XU patent/CN211480761U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267539A (en) * | 2020-10-14 | 2021-01-26 | 江苏华世远电力技术有限公司 | Cable trench convenient to clean and treat rain sewage |
| CN112234569A (en) * | 2020-10-19 | 2021-01-15 | 国网新疆电力有限公司阿克苏供电公司 | Circular through type drainage dehumidification cable pit |
| CN114172108A (en) * | 2021-11-19 | 2022-03-11 | 国网江苏省电力有限公司连云港供电分公司 | Dehumidification drainage cable pit based on combined material |
| CN114172108B (en) * | 2021-11-19 | 2024-02-13 | 国网江苏省电力有限公司连云港供电分公司 | Dehumidification drainage cable pit based on combined material |
| CN114498380A (en) * | 2021-12-15 | 2022-05-13 | 国网南通综合能源服务有限公司 | Power box electrical system for wharf shore power pile |
| CN114498380B (en) * | 2021-12-15 | 2024-04-12 | 国网南通综合能源服务有限公司 | Power box electrical system for wharf shore electric pile |
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