CN114362072B - Dehumidification device and method for terminal box of transformer substation in high corrosion area - Google Patents
Dehumidification device and method for terminal box of transformer substation in high corrosion area Download PDFInfo
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- CN114362072B CN114362072B CN202111503148.3A CN202111503148A CN114362072B CN 114362072 B CN114362072 B CN 114362072B CN 202111503148 A CN202111503148 A CN 202111503148A CN 114362072 B CN114362072 B CN 114362072B
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- storage tank
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Abstract
The invention discloses a dehumidifying device and method for a terminal box of a transformer substation in a high corrosion area. The invention monitors the pressure and the temperature in the cabinet body in real time, changes the pressure, controls the electromagnetic valve to supplement air, automatically reaches a set threshold value larger than the outside air, ensures that the outside moisture does not enter the terminal box, and realizes dehumidification of the terminal box.
Description
Technical Field
The invention relates to the technical field of dehumidification of terminal boxes of substations, in particular to a dehumidification device and method applied to a terminal box of a substation in a high corrosion area.
Background
The terminal box of the transformer substation in the high corrosion area is easy to corrode, the corrosion of the terminal box can be greatly reduced by controlling the humidity, but the traditional dehumidification scheme is not high in cost (one terminal box needs thousands of yuan); the terminal box has poor dehumidification effect (moisture invasion cannot be avoided); secondly, after the terminal box adopts some high-cost complicated dehumidification schemes, maintenance and modification work on the terminal box and internal cables become difficult, and a plurality of maintenance items are increased, so that the cable and the terminal are burnt in operation.
Disclosure of Invention
The invention aims to solve the technical problems that: the terminal box dehumidification device and method for the transformer substation in the high corrosion area are provided, and the technical problem existing in the prior art is solved.
The technical scheme adopted by the invention is as follows: the utility model provides a high corrosion area transformer substation terminal box dehydrating unit, includes dry air temporary storage tank, solenoid valve, controller, temperature sensor and pressure sensor, and dry air temporary storage tank passes through the pipe connection to the terminal incasement, installs the solenoid valve on the pipeline, and the solenoid valve is connected to the controller, and the controller is connected with temperature sensor and pressure sensor, and temperature sensor and pressure sensor install in the terminal incasement.
Preferably, the above-mentioned dry air temporary storage tank is connected to a plurality of terminal boxes, and an air outlet reducing solenoid valve is installed at the air outlet pipe.
Preferably, the charging port of the temporary storage tank for dry air is detachably connected with the movable dry air generating module.
Preferably, the mobile dry air generating module comprises an air compressor and a dry processing device, wherein an air outlet of the air compressor is connected to an air inlet of the dry processing device, and an air outlet of the dry processing device is connected to the dry air temporary storage tank.
Preferably, the air compressor and the drying treatment device are fixedly connected to the trolley.
Preferably, a pressure monitoring instrument is installed on the dry air temporary storage tank.
Preferably, the dehumidification method of the dehumidification device for the terminal box of the transformer substation in the high corrosion area comprises the following steps: the terminal box is provided with a temperature sensor and a pressure sensor, the temperature transmitter is used for ensuring the normal operation of a terminal and a wire in the box, once local temperature fluctuation or heat accumulation occurs in the terminal box, the alarm and the signal output of the temperature sensor are caused, and the electromagnetic valve is started in time to start radiating until the temperature is normal; the pressure sensor monitors the pressure condition inside the box in real time, the pressure difference is warned and is output as soon as fluctuation occurs, at this time, the signal is processed in a centralized way through the controller, a switching value is output again, the opening and closing of the electromagnetic valve switch are controlled, the pretreated dry air is conveyed into the box body of the terminal box from the temporary storage tank through the pressure reducing valve, the normal micro-positive pressure is achieved, and the controller of the terminal box outputs the switching value again to close the electromagnetic valve.
Preferably, the pressure in the terminal box is normally slightly positive and higher than the external pressure by 0.01-0.02MPa.
The invention has the beneficial effects that: compared with the prior art, the invention has the following effects:
(1) The invention monitors the pressure and temperature in the cabinet body in real time, the signal data of each terminal box can be transmitted to a controller (a singlechip module) in a centralized way, analysis processing and storage are carried out in a centralized way, and once the signal quantity is abnormal, if the abnormal signal is: the fluctuation of the local temperature indicates that there is a possibility of short circuit; the pressure difference fluctuation indicates that the pressure in the box body is unstable, the pressure relief condition possibly exists, external moisture is possibly fleed in), the singlechip outputs a switching value to control the opening of the electromagnetic valve of the gas pipeline for supplementing the air, and the electromagnetic valve is closed after the data are normal, so that the effect of keeping micro-positive pressure in the box body is achieved.
(2) The invention uses the physical principle to keep the inside of each terminal box to form micro positive pressure, and uses the internal pressure to be larger than the external atmospheric pressure to avoid the moisture outside the box from entering the box, thereby ensuring the normal humidity index.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will be further described with reference to specific examples.
Example 1: as shown in FIG. 1, the dehumidifying device for the transformer substation terminal box in the high corrosion area comprises a dry air temporary storage tank, an electromagnetic valve, a controller, a temperature sensor and a pressure sensor, wherein the dry air temporary storage tank is connected into the terminal box through a pipeline, the electromagnetic valve is installed on the pipeline and connected to the controller (singlechip), the controller is connected with the temperature sensor and the pressure sensor, and the temperature sensor and the pressure sensor are installed in the terminal box.
Preferably, the above-mentioned dry air temporary storage tank is connected to a plurality of terminal boxes, and the outlet duct department is installed and is given vent to anger the decompression solenoid valve, and every terminal box is provided with corresponding controller, solenoid valve, temperature sensor and pressure sensor.
Preferably, the inflation inlet of the temporary storage tank for dry air is detachably connected with the movable dry air generation module, so that different temporary storage tanks for dry air can be inflated conveniently.
Preferably, the above-mentioned portable dry air generation module includes air compressor and drying treatment device, and air compressor's gas outlet is connected to drying treatment device's air inlet, and drying treatment device's gas outlet is connected to the dry air and is kept in the jar, and air drying handles conveniently, and the air supply source of terminal box comes from the dry air and keeps in the jar, and the dry air keeps in jar and stores at the long-term deposit in scene, and when required, accessible portable dry air generation module takes place the dry air of moderate amount and supplies in the jar, and wherein, drying preprocessing device contains: alumina desiccant, gas dew point meter.
Preferably, the air compressor and the drying treatment device are fixedly connected to the trolley, so that the trolley is convenient to move.
Preferably, the pressure monitoring instrument is arranged on the dry air temporary storage tank, so that the pressure can be monitored in real time, and dry air can be timely filled.
Example 2: a dehumidification method of a dehumidification device for a terminal box of a transformer substation in a high corrosion area comprises the following steps: the terminal box is provided with a temperature sensor and a pressure sensor, the temperature transmitter is used for ensuring the normal operation of a terminal and a wire in the box, once local temperature fluctuation or heat accumulation occurs in the terminal box, the alarm and the signal output of the temperature sensor are caused, and the electromagnetic valve is started in time to start radiating until the temperature is normal; the pressure sensor monitors the pressure condition in the box body in real time, once the pressure difference fluctuates, the pressure difference alarms and is output by signals, at the moment, the signals are intensively processed by the controller to output a switching value again, the opening and closing of the electromagnetic valve switch are controlled, the pretreated dry air is conveyed into the box body of the terminal box from the temporary storage tank through the pressure reducing valve to reach the normal micro-positive pressure of the pressure, the normal micro-positive pressure of the pressure in the terminal box is higher than the external 0.01-0.02MPa, and the controller of the terminal box outputs the switching value again to close the electromagnetic valve.
After the terminal box is overhauled, starting a heater in the terminal box for heating, introducing dry air for ventilation, stopping heating and ventilation after the humidity in the box is less than 40%, and keeping the pressure slightly higher than the pressure outside the box (keeping the micro positive pressure to prevent moisture from entering the box); and the micro-positive pressure drying state (the humidity in the box is less than 40%) is automatically kept during normal operation.
By pressurizing the inside of the box body, the pressure in the box body is always kept at least 0.01-0.02MPa higher than the atmospheric pressure outside the box body, so that external moisture cannot enter the box body due to the pressure, thereby achieving the standard state of keeping the dew point temperature
The foregoing is merely illustrative of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present invention, and therefore, the scope of the present invention shall be defined by the scope of the appended claims.
Claims (6)
1. The utility model provides a terminal box dehydrating unit of transformer substation which characterized in that: including dry air temporary storage tank, solenoid valve, controller, temperature sensor and pressure sensor, dry air temporary storage tank passes through the pipe connection to the terminal incasement, installs the solenoid valve on the pipeline, and the solenoid valve is connected to the controller, and the controller is connected with temperature sensor and pressure sensor, and temperature sensor and pressure sensor install in the terminal incasement, and the dehumidification method of transformer substation's terminal case dehydrating unit is: the terminal box is provided with a temperature sensor and a pressure sensor, once local temperature fluctuation or heat accumulation occurs in the terminal box, the alarm and signal output of the temperature sensor are caused, and the electromagnetic valve is started to open for heat dissipation in time until the temperature is normal; the pressure sensor monitors the pressure condition in the box body in real time, once the pressure difference fluctuates, the pressure difference alarms and is output by signals, at the moment, the signals are intensively processed by the controller to output a switching value again, the opening and closing of the electromagnetic valve switch are controlled, the pretreated dry air is conveyed into the box body of the terminal box from the temporary storage tank through the pressure reducing valve to reach the normal micro-positive pressure, and the controller of the terminal box outputs the switching value again to close the electromagnetic valve; the normal micro-positive pressure in the terminal box is higher than the external pressure by 0.01-0.02MPa.
2. The substation terminal box dehumidification device according to claim 1, wherein: the dry air temporary storage tank is connected to a plurality of terminal boxes, and an air outlet decompression electromagnetic valve is installed at the air outlet pipe.
3. The substation terminal box dehumidification device according to claim 1, wherein: the inflation inlet of the dry air temporary storage tank is detachably connected with the movable dry air generation module.
4. A substation terminal box dehumidification device according to claim 3, characterized in that: the movable dry air generation module comprises an air compressor and a dry processing device, wherein an air outlet of the air compressor is connected to an air inlet of the dry processing device, and an air outlet of the dry processing device is connected to the dry air temporary storage tank.
5. The substation terminal box dehumidification device according to claim 4, wherein: the air compressor and the drying treatment device are fixedly connected to the trolley.
6. The substation terminal box dehumidification device according to claim 1, wherein: the dry air temporary storage tank is provided with a pressure monitoring instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503148.3A CN114362072B (en) | 2021-12-09 | 2021-12-09 | Dehumidification device and method for terminal box of transformer substation in high corrosion area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503148.3A CN114362072B (en) | 2021-12-09 | 2021-12-09 | Dehumidification device and method for terminal box of transformer substation in high corrosion area |
Publications (2)
| Publication Number | Publication Date |
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| CN114362072A CN114362072A (en) | 2022-04-15 |
| CN114362072B true CN114362072B (en) | 2023-07-18 |
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| CN202111503148.3A Active CN114362072B (en) | 2021-12-09 | 2021-12-09 | Dehumidification device and method for terminal box of transformer substation in high corrosion area |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203281202U (en) * | 2013-05-20 | 2013-11-13 | 重庆渝能滤油机制造有限公司 | Air drying generator for ultra-high-voltage transformer |
| CN206121471U (en) * | 2016-10-21 | 2017-04-26 | 重庆捷嘉机电设备有限公司 | Special portable compressed air drying system of track |
| CN206960944U (en) * | 2017-08-10 | 2018-02-02 | 杭州正信自动化工程有限公司 | Controlling device of micro-positive pressure of enclosed busbar |
| CN107611820A (en) * | 2017-09-28 | 2018-01-19 | 成都汉度科技有限公司 | A kind of dehumidification system for being used for box-type substation and ring main unit |
| CN109449767B (en) * | 2018-09-18 | 2020-08-18 | 国网浙江省电力有限公司紧水滩水力发电厂 | Anti-condensation distribution box and control method thereof |
| CN209233181U (en) * | 2019-01-24 | 2019-08-09 | 陕西金源自动化科技有限公司 | A kind of intelligence micro-positive pressure dehumidification system |
| CN110556729A (en) * | 2019-09-27 | 2019-12-10 | 国网山西省电力公司太原供电公司 | Electric moisture-proof method for switch cabinet |
| CN113262827A (en) * | 2021-04-13 | 2021-08-17 | 中国科学院西安光学精密机械研究所 | High-low temperature test box with automatic dehumidification system and use method thereof |
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