CN113794176A - Cooling and dehumidifying system for cable trench of transformer substation - Google Patents
Cooling and dehumidifying system for cable trench of transformer substation Download PDFInfo
- Publication number
- CN113794176A CN113794176A CN202111080428.8A CN202111080428A CN113794176A CN 113794176 A CN113794176 A CN 113794176A CN 202111080428 A CN202111080428 A CN 202111080428A CN 113794176 A CN113794176 A CN 113794176A
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- China
- Prior art keywords
- cooling
- cable
- cable trench
- subsystem
- transformer substation
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/266—Drying gases or vapours by filtration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
Abstract
The invention relates to a cooling and dehumidifying system for a transformer substation cable trench, which comprises a cable trench body, wherein the cable trench body is provided with a laying cavity with an upper opening and a front-back through hole, the upper opening of the laying cavity is covered with a sealing cover plate, the cable trench body is provided with an air inlet and an air outlet, the cooling and dehumidifying system comprises a remote control terminal, a control box installed on site, a cooling and dehumidifying subsystem for reducing the temperature in the laying cavity and removing moisture in the laying cavity and a strong drainage subsystem for draining accumulated water at the bottom of the laying cavity, the remote control terminal is in data communication with the control box through a wireless communication module, and the cooling and dehumidifying subsystem and the strong drainage subsystem are connected to the control box through communication modules. According to the invention, the temperature sensor and the humidity sensor are used in combination with the evaporator and the condenser, so that the temperature and the humidity in the cable trench body can be always kept within normal numerical value ranges by the cooling and dehumidifying subsystem, the electric leakage of the cable is avoided, and the operation of the transformer substation is more reliable.
Description
Technical Field
The invention belongs to the technical field of power protection devices, and particularly relates to a cooling and dehumidifying system for a cable trench of a transformer substation.
Background
The cable trench is an underground pipeline for laying and replacing electric power or telecommunication cable facilities, and when a transformer substation is built, in order to ensure the safety of the cable when the electric power facilities are used, the cable trench is required to be used for laying the cable.
The cable can release a large amount of heat in the operation process, the heat is difficult to be quickly discharged, the temperature around the cable is gradually increased, a fire disaster is easily caused, and the safe operation of electrical equipment is seriously endangered; in addition, the cable pit buries underground, and the moisture of soil can make the inside moisture of cable pit, if meet big rainy day, ponding can appear in the cable pit inside, increases the moisture of the inside air of cable pit, and the moisture easily makes the cable take place to puncture, causes concentrated electric leakage, in case the cable takes place the electric leakage, just need salvage, and ponding can lead to salvageing to have great danger, has great potential safety hazard, this for prior art's weak point.
In view of the above, the invention provides a cooling and dehumidifying system for a cable trench of a transformer substation; it is very necessary to solve the defects existing in the prior art.
Disclosure of Invention
The invention aims to provide a cooling and dehumidifying system for a transformer substation cable trench, aiming at the defects that the temperature in the cable trench is difficult to cool and dehumidify and water is easy to accumulate in the prior art, so as to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a transformer substation's cable pit is with cooling dehumidification system, includes the cable pit body, the cable pit body has the upper portion opening and around link up be used for laying the laying cavity of cable, the upper portion opening part lid that lays the cavity has sealed apron, be provided with air intake and air outlet on the cable pit body, this transformer substation's cable pit is with cooling dehumidification system still includes remote control terminal, the control box of installation on the spot, be used for reducing the temperature that lays the cavity in and get rid of the cooling dehumidification subsystem that lays the cavity interior moisture and be used for the strong drainage subsystem that discharges laying cavity bottom ponding, remote control terminal carries out data communication through wireless communication module and control box, cooling dehumidification subsystem and strong drainage subsystem all are connected to the control box through communication module.
Preferably, the control box comprises a box body and a box door, a main controller, a first microcontroller and a second microcontroller are arranged in the control box, a change-over switch, a start button and a stop button are arranged on the box door, the change-over switch, the start button and the stop button are connected to the input end of the main controller, the change-over switch is arranged to enable the system to have two working modes, and the system can normally run when an emergency happens.
Preferably, the input end of the first microcontroller is connected with a temperature sensor for detecting the real-time temperature in the laying cavity and a humidity sensor for detecting the air humidity in the laying cavity, and the output end of the first microcontroller is connected with a compressor, an evaporator, a condenser and a water suction pump in the cooling and dehumidifying subsystem to control the two subsystems independently, so that the two subsystems are not influenced by each other during operation.
As preferred, cooling dehumidification subsystem still includes the liquid reserve tank, be provided with the inlet to the liquid reserve tank in add the refrigerant on the liquid reserve tank, the liquid outlet of liquid reserve tank passes through the inlet of suction pump and first duct connection to evaporimeter, and the gas outlet of evaporimeter passes through the air inlet of second duct connection to compressor, and the gas vent of compressor passes through the third duct connection to condenser, and the condenser passes through the fourth duct connection to evaporimeter, be provided with the expansion valve on the fourth duct, be convenient for cool down the dehumidification through cooling dehumidification subsystem to laying the cavity, guarantee electrical equipment's safe operation.
As preferred, the bottom of cable pit body is provided with the water drainage tank, be provided with the level sensor who is used for detecting ponding water level in the water drainage tank, level sensor is connected to second microcontroller's input, and second microcontroller's output termination has and is used for passing through the outer drain pump of drain pipe discharge cable pit with the ponding in the water drainage tank, is convenient for will lay the ponding discharge cable pit of cavity bottom, avoids taking place insulating accident.
As preferred, air intake department is provided with air-supply line and filter screen, the evaporimeter sets up in air-supply line department, and the one end that the evaporimeter deviates from the air-supply line is provided with into fan, and the air-supply fan orientation deviates from the direction air-out of evaporimeter, air outlet department is provided with out fan and air-out pipe, is convenient for to laying and ventilates the heat dissipation in the cavity.
Preferably, the air inlet pipe and the air outlet pipe are both inverted J-shaped pipelines, so that rainwater is prevented from entering the cable trench body along the air inlet pipe and the air outlet pipe.
Preferably, the alarm device further comprises an alarm module, the alarm module is connected to the main controller through the communication module and comprises three indicator lamps and a buzzer, the alarm module is convenient for reminding a worker that the temperature sensor, the humidity sensor or the liquid level sensor is abnormal, the detected numerical value cannot be adopted, and the manual control system is adopted to start or stop.
The temperature and humidity sensor is combined with the evaporator and the condenser for use, so that the temperature and humidity in the cable trench body can be kept within a normal numerical range by the cooling and dehumidifying subsystem, the electric leakage of a cable is avoided, the reclosing and tripping times of a transformer substation are reduced, and the transformer substation can run more reliably.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the control box.
FIG. 3 is a relationship diagram of an embodiment of the present invention.
1 is a cable trench body, 11 is a laying cavity, 12 is an air inlet pipe, 13 is a filter screen, 14 is an air inlet fan, 15 is an air outlet fan, 16 is an air outlet pipe, 21 is a box body, 22 is a box door, 23 is a main controller, 24 is a first microcontroller, 25 is a second microcontroller, 26 is a change-over switch, 27 is a start button, 28 is a stop button, 29 is an alarm module, 291 is an indicator lamp, 292 is a buzzer, 3 is a remote control terminal, 4 is a temperature reduction and dehumidification subsystem, 41 is a temperature sensor, 42 is a humidity sensor, 43 is a compressor, 431 is a third delivery pipe, 44 is an evaporator, 441 is a second delivery pipe, 45 is a condenser, 451 is a fourth delivery pipe, 452 is an expansion valve, 46 is a water pump, 47 is a liquid storage tank, 481 is a water pump, 482 is a first delivery pipe, 5 is a strong drainage subsystem, 51 is a drainage tank, 52 is a liquid level sensor, 53 is a drain pipe, and 54 is a drain pump.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
As shown in fig. 1, 2 and 3, the invention provides a cooling and dehumidifying system for a cable trench of a transformer substation, which comprises a cable trench body 1, the cable trench body 1 is provided with a laying cavity 11 which is provided with an upper opening and is communicated with the front and the back for laying cables, the upper opening of the laying cavity 11 is covered with a sealing cover plate, the cable trench body 1 is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet pipe 12 and a filter screen 13, the filter screen 13 is a drying filter screen, which is convenient for drying the air entering the cable trench body 1, the air outlet is provided with an air outlet fan 15 and an air outlet pipe 16, which is convenient for ventilating the cable trench body 1, and the air inlet pipe 12 and the air outlet pipe 16 both adopt inverted J-shaped pipelines, so that rainwater is prevented from entering the cable trench body 1 along the air inlet pipe 12 and the air outlet pipe 16, and the probability of water accumulation in the cable trench body 1 is reduced. Simultaneously, the bottom of cable pit body 1 is provided with water drainage tank 51, and the bottom of cable pit body 1 is inclined to the one end that is close to water drainage tank 51 by the one end of keeping away from water drainage tank 51, is convenient for with rainwater to the interior gathering of water drainage tank 51, install level sensor 52 in the water drainage tank 51, level sensor 52 is used for detecting ponding water level in the water drainage tank 51.
This transformer substation's cable pit is with cooling dehumidification system still includes remote control terminal 3, the control box of installing on the spot, is used for reducing to lay the temperature in the cavity 11 and gets rid of the cooling dehumidification subsystem 4 who lays the interior moisture of cavity 11 and is used for discharging to lay cavity 11 bottom ponding strong drainage subsystem 5, remote control terminal 3 carries out data communication through wireless communication module and control box, cooling dehumidification subsystem 4 and strong drainage subsystem 5 all are connected to the control box through communication module.
The control box comprises a box body 21 and a box door 22, a main controller 23, a first microcontroller 24 and a second microcontroller 25 are arranged in the control box, a change-over switch 26, a start button 27 and a stop button 28 are arranged on the box door 22, the change-over switch 26, the start button 27 and the stop button 28 are all connected to an input of the master controller 23, the first microcontroller 24 and the second microcontroller 25 are all communicatively connected to the master controller 23, in which two shift positions, including an automatic shift position and a manual shift position, when the change-over switch 26 is in the automatic gear, the main controller 23 controls the cooling and dehumidifying subsystem 4 and the forced drainage subsystem 5 to cool and dehumidify the cable duct body 1 and drain accumulated water, in addition, the worker can rotate the change-over switch 26 to the manual gear position in an emergency, and manually operating the start button 27 or the stop button 28 to manually operate the cooling dehumidification subsystem 4 and the forced drainage subsystem 5.
Simultaneously, this transformer substation's cable pit is with cooling dehumidification system still includes warning module 29, warning module 29 is connected to master controller 23 through communication module, warning module 29 includes three pilot lamp 291 and bee calling organ 262, and when temperature sensor 41 or humidity transducer 42 or level sensor 52 appear unusual, its pilot lamp 291 that corresponds will light, and bee calling organ 292 will sound always simultaneously, is convenient for make the suggestion to the staff, and the numerical value that detects simultaneously can not be adopted, and the staff adopts manual control mode control system's start-up or stop this moment.
The input end of the first microcontroller 24 is connected with a temperature sensor 41 for detecting real-time temperature in the laying cavity 11 and a humidity sensor 42 for detecting air humidity in the laying cavity 11, the output end of the first microcontroller 24 is connected with a compressor 43, an evaporator 44, a condenser 45 and a water pump 46 in the cooling and dehumidifying subsystem 4, the input end of the second microcontroller 25 is connected with a liquid level sensor 52, and the output end of the second microcontroller 25 is connected with a drainage pump 54 for draining accumulated water in a drainage groove 51 out of a cable trench through a drainage pipe 53.
The cooling and dehumidifying subsystem 4 further comprises a liquid storage tank 48, a liquid inlet for adding a refrigerant into the liquid storage tank 48 is formed in the liquid storage tank 48, a liquid outlet of the liquid storage tank is connected to a liquid inlet of the evaporator 44 through a water suction pump 481 and a first conveying pipe 482, a gas outlet of the evaporator 44 is connected to a gas inlet of the compressor 43 through a second conveying pipe 441, a gas outlet of the compressor 43 is connected to the condenser 45 through a third conveying pipe 431, the condenser 45 is connected to the evaporator 44 through a fourth conveying pipe 451, an expansion valve 47 is arranged on the fourth conveying pipe 451, so that the cooling and dehumidifying of the laying cavity 11 through the cooling and dehumidifying subsystem 4 are facilitated, and the safe operation of electrical equipment is guaranteed.
The evaporator 44 is arranged at the air inlet pipe 12, the end of the evaporator 44, which is away from the air inlet pipe 12, is provided with the air inlet fan 14, and the air inlet fan 14 blows air in a direction away from the evaporator 44, so that ventilation and heat dissipation can be conveniently performed in the laying cavity 11.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a transformer substation's cable pit is with cooling dehumidification system, includes the cable pit body, the cable pit body has the cavity that lays that is used for laying cable that upper portion opening part and front and back link up, and the upper portion opening part lid that lays the cavity has connect sealed apron, is provided with air intake and air outlet on the cable pit body, a serial communication port, still include remote control terminal, the control box of installing on the spot, be used for reducing the temperature that lays the cavity in and get rid of the cooling dehumidification subsystem that lays cavity intracavity moisture and be used for the strong drainage subsystem that discharges and lay cavity bottom ponding, the remote control terminal carries out data communication through wireless communication module and control box, cooling dehumidification subsystem and strong drainage subsystem all are connected to the control box through communication module.
2. The cooling and dehumidifying system for the cable trench of the transformer substation of claim 1, wherein the control box comprises a box body and a box door, a main controller, a first microcontroller and a second microcontroller are arranged in the control box, a change-over switch, a start button and a stop button are arranged on the box door, and the change-over switch, the start button and the stop button are all connected to an input end of the main controller.
3. The cooling and dehumidifying system for the cable trench of the transformer substation of claim 2, wherein an input end of the first microcontroller is connected with a temperature sensor for detecting real-time temperature in the laying cavity and a humidity sensor for detecting air humidity in the laying cavity, and an output end of the first microcontroller is connected with a compressor, an evaporator, a condenser and a water pump in the cooling and dehumidifying subsystem.
4. The cooling and dehumidifying system of claim 3, wherein the cooling and dehumidifying subsystem further comprises a liquid storage tank, a liquid inlet for adding a refrigerant into the liquid storage tank is formed in the liquid storage tank, a liquid outlet of the liquid storage tank is connected to a liquid inlet of the evaporator through a water pump and a first conveying pipe, a gas outlet of the evaporator is connected to a gas inlet of the compressor through a second conveying pipe, a gas outlet of the compressor is connected to the condenser through a third conveying pipe, the condenser is connected to the evaporator through a fourth conveying pipe, and an expansion valve is arranged on the fourth conveying pipe.
5. The cooling and dehumidifying system for the cable trench of the transformer substation of claim 2, wherein a drainage groove is formed in the bottom of the cable trench body, a liquid level sensor for detecting the level of accumulated water in the drainage groove is arranged in the drainage groove, the liquid level sensor is connected to the input end of the second microcontroller, and the output end of the second microcontroller is connected with a drainage pump for draining the accumulated water in the drainage groove out of the cable trench through a drainage pipe.
6. The cooling and dehumidifying system for the cable trench of the transformer substation of claim 3, wherein the air inlet is provided with an air inlet pipe and a filter screen, the evaporator is arranged at the air inlet pipe, an air inlet fan is arranged at one end of the evaporator, which deviates from the air inlet pipe, the air inlet fan blows air out in the direction deviating from the evaporator, and the air outlet is provided with an air outlet fan and an air outlet pipe.
7. The cooling and dehumidifying system for the cable trench of the transformer substation of claim 6, wherein the air inlet pipe and the air outlet pipe are both inverted J-shaped pipelines.
8. The cooling and dehumidifying system for the cable trench of the transformer substation of claim 2, further comprising an alarm module, wherein the alarm module is connected to the main controller through a communication module, and the alarm module comprises three indicator lamps and a buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111080428.8A CN113794176A (en) | 2021-09-15 | 2021-09-15 | Cooling and dehumidifying system for cable trench of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111080428.8A CN113794176A (en) | 2021-09-15 | 2021-09-15 | Cooling and dehumidifying system for cable trench of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113794176A true CN113794176A (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111080428.8A Pending CN113794176A (en) | 2021-09-15 | 2021-09-15 | Cooling and dehumidifying system for cable trench of transformer substation |
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| Country | Link |
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| CN (1) | CN113794176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114301024A (en) * | 2021-12-20 | 2022-04-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Highway tunnel cable pit heat preservation, control by temperature change and dampproofing system that insulates against heat |
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| WO2017024303A1 (en) * | 2015-08-06 | 2017-02-09 | Hubbell Incorporated | Outdoor floor box enclosure |
| CN106406400A (en) * | 2016-11-14 | 2017-02-15 | 国网河南省电力公司濮阳供电公司 | Substation cable trench intelligent comprehensive monitoring system |
| CN210468455U (en) * | 2019-10-03 | 2020-05-05 | 泉州市基业电器成套有限公司 | Automatic temperature-adjusting electrical cabinet |
| CN112582925A (en) * | 2020-12-11 | 2021-03-30 | 广东电网有限责任公司 | Cooling and dehumidifying device |
| CN212908933U (en) * | 2020-06-29 | 2021-04-06 | 宁波东方电缆股份有限公司 | Cable trench with drainage function |
-
2021
- 2021-09-15 CN CN202111080428.8A patent/CN113794176A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017024303A1 (en) * | 2015-08-06 | 2017-02-09 | Hubbell Incorporated | Outdoor floor box enclosure |
| CN106406400A (en) * | 2016-11-14 | 2017-02-15 | 国网河南省电力公司濮阳供电公司 | Substation cable trench intelligent comprehensive monitoring system |
| CN210468455U (en) * | 2019-10-03 | 2020-05-05 | 泉州市基业电器成套有限公司 | Automatic temperature-adjusting electrical cabinet |
| CN212908933U (en) * | 2020-06-29 | 2021-04-06 | 宁波东方电缆股份有限公司 | Cable trench with drainage function |
| CN112582925A (en) * | 2020-12-11 | 2021-03-30 | 广东电网有限责任公司 | Cooling and dehumidifying device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114301024A (en) * | 2021-12-20 | 2022-04-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Highway tunnel cable pit heat preservation, control by temperature change and dampproofing system that insulates against heat |
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