CN212784437U - Intelligent condensation preventing device for switch cabinet - Google Patents
Intelligent condensation preventing device for switch cabinet Download PDFInfo
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- CN212784437U CN212784437U CN202021472023.XU CN202021472023U CN212784437U CN 212784437 U CN212784437 U CN 212784437U CN 202021472023 U CN202021472023 U CN 202021472023U CN 212784437 U CN212784437 U CN 212784437U
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- temperature
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- switch cabinet
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- 238000009833 condensation Methods 0.000 title claims abstract description 46
- 230000005494 condensation Effects 0.000 title claims abstract description 42
- 238000004891 communication Methods 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 4
- 239000002274 desiccant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a cubical switchboard intelligence prevents condensation device belongs to the automation field. The intelligent cabinet temperature control system comprises a power supply, a microprocessor, a temperature sensor outside the cabinet, a temperature sensor inside the cabinet, a heater, a humidity sensor inside the cabinet, a dehumidifying device, an RS485 communication interface and a display; the power supply comprises a voltage reduction circuit, a rectifying circuit, a filter circuit and a voltage stabilizing circuit, the input voltage range is 220V +/-15%, the power supply is connected with the microprocessor, and the microprocessor provides a working power supply for other components outside the dehumidifying device; the RS485 communication interface is connected with the microprocessor and used for transmitting data or instructions; the display is a nixie tube display and is used for displaying the temperature value, the temperature difference and the humidity value inside and outside the cabinet received by the microprocessor. The temperature measurement of two temperature sensors inside and outside the switch cabinet is utilized to control the heater to adjust the temperature difference inside and outside the cabinet, so that the temperature inside the cabinet is always higher than the temperature outside the cabinet by 2-3 ℃, and the temperature condition of condensation is avoided inside the cabinet.
Description
Technical Field
The utility model belongs to the automation field relates to cubical switchboard intelligence prevents condensation device.
Background
In a power supply system, especially, as a modern power system rapidly develops to a high voltage, a large unit and a large capacity, a demand for power supply reliability is increasing. High-voltage switch cabinets of power plants and substations are important electrical equipment. The switch cabinet works in a humid and sultry environment for a long time, a large amount of water vapor is accumulated inside to form condensation, condensation water drops are accumulated on an insulating surface, partial discharge can be caused, and serious faults such as breakdown, equipment outage and the like can be caused due to the fact that insulation is damaged in long-term operation.
The condensation of preventing that adopts in the cubical switchboard at present mainly has and heats and dehumidifies two kinds of modes to the cubical switchboard. The heating mode is that the temperature and the humidity in the switch cabinet are monitored, and when water vapor in the air is saturated, the heater is driven to work. The mode lacks a prevention process, and only eliminates the condensation phenomenon after the condensation is generated, and the mode cannot fully ensure the actual safety from the perspective of safety and reliability in the practical application. In addition, the problem of local over-high temperature rise of the switch cabinet can be caused in the environment with higher temperature, and certain potential safety hazards exist. The dehumidification includes modes such as carrying out the ventilation and placing drier, and the ventilation is at box lateral part or top installation exhaust fan, makes the internal air circulation of cabinet, destroys the formation condition of condensation, but partial cubical switchboard inner space is limited, and the installation is difficult, can produce the noise in addition when the fan operation. The mode of placing the drying agent can absorb moisture in the cabinet, is simple and easy to use, but the drying agent is easy to saturate, and if the drying agent is not replaced in time after saturation, the anti-condensation effect can be obviously reduced.
Therefore, the utility model discloses according to the emergence mechanism of condensation, provide a condensation device is prevented to cubical switchboard intelligence, through the inside and outside difference in temperature of switch board and reduce the dual means of relative humidity in the cabinet, compensatied the tradition and prevented the not enough of condensation mode, guaranteed electric power system's steady operation.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a cubical switchboard intelligence prevents condensation device. The current situation that the condensation mode effect is not good is prevented to present cubical switchboard, according to the emergence and the prevention mechanism of condensation, utilizes temperature sensor and heating device to make the interior temperature of cabinet be higher than the outside 2 ~ 3 ℃ of cabinet all the time, utilizes the relative humidity in humidity transducer and the dehydrating unit control cubical switchboard for the inside condition that loses the condensation and take place of cubical switchboard, dual means has greatly improved the condensation effect of preventing of cubical switchboard.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the intelligent condensation preventing device for the switch cabinet comprises a power supply, a microprocessor, a temperature sensor outside the cabinet, a temperature sensor in the cabinet, a heater, a humidity sensor in the cabinet, a dehumidifying device, an RS485 communication interface and a display;
the power supply comprises a voltage reduction circuit, a rectifying circuit, a filter circuit and a voltage stabilizing circuit, the input voltage range is 220V +/-15%, the power supply is connected with the microprocessor, and the microprocessor provides a working power supply for other components outside the dehumidifying device;
the RS485 communication interface is connected with the microprocessor and used for transmitting data or instructions;
the display is a nixie tube display and is used for displaying the temperature value, the temperature difference and the humidity value inside and outside the cabinet received by the microprocessor.
Optionally, the microprocessor is a 51-chip microcomputer with model of STC89C 51.
Optionally, the temperature sensor outside the cabinet and the temperature sensor inside the cabinet adopt digital temperature sensors AD590 for acquiring the temperature inside and outside the switch cabinet, and are in signal connection with the microprocessor.
Optionally, the temperature sensor outside the cabinet is mounted on a door panel of a low-pressure chamber of the switch cabinet, and is provided with a mounting housing, and the housing is provided with an air vent to ensure the accuracy of the measurement value of the temperature sensor.
Optionally, the temperature sensor in the cabinet is mounted on a lower partition plate of a low-pressure chamber of the switch cabinet and provided with a mounting shell, and the shell is fixed on the lower partition plate of the low-pressure chamber and transmits the temperature of the partition plate to the temperature sensor through an embedded copper plate, so that the working accuracy of the temperature sensor is ensured.
Optionally, the heater is a DJR series aluminum alloy comb heater, an aluminum alloy radiating plate profile and a nickel-chromium alloy heating wire are adopted and are in signal connection with the microprocessor, and the use temperature is-40 ℃ to 200 ℃.
Optionally, the temperature sensor in the cabinet adopts a capacitance type humidity sensor HS1101LF, and is in signal connection with the microprocessor.
Optionally, the dehumidifying device comprises an air pipe, a fan, a condensation chamber, a semiconductor refrigerating sheet, a drain pipe and a water permeable membrane;
the tuber pipe stretches out outside the cubical switchboard, and one end sets up the fan of giving vent to anger, and the other end sets up inlet fan, and the corresponding hole department of cubical switchboard is installed to fan and inlet fan of giving vent to anger, outlet fan and inlet fan's protection level is IP 54.
Optionally, a one-way water permeable membrane is arranged at the joint of the drain pipe and the condensation chamber to prevent external moisture from entering the device.
The beneficial effects of the utility model reside in that:
(1) the temperature measurement of two temperature sensors inside and outside the switch cabinet is utilized to control the heater to adjust the temperature difference inside and outside the cabinet, so that the temperature inside the cabinet is always higher than the temperature outside the cabinet by 2-3 ℃, and the temperature condition of condensation is avoided inside the cabinet.
(2) When the humidity sensor detects that the relative humidity in the cabinet exceeds a set value, the air outlet fan and the air inlet fan of the dehumidification device start to rotate, so that air in the cabinet circularly flows through the air pipes and is dehumidified through the semiconductor refrigeration piece, and the effect of reducing the air humidity in the switch cabinet is achieved.
(3) The device has wide applicability, and the set value of the controller does not need to be adjusted according to different regions or different climatic conditions.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a block diagram of an intelligent anti-condensation device;
FIG. 2 is a diagram of a switch cabinet anti-condensation device;
fig. 3 is a circuit diagram of the present apparatus.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
As shown in fig. 1 to 3, the intelligent anti-condensation device of the switch cabinet comprises a power supply, a microprocessor, an outside temperature sensor, an inside temperature sensor, a heater, an inside humidity sensor, a dehumidifying device, an RS485 communication interface and a display.
The power supply circuit consists of a voltage reduction circuit, a rectifying circuit, a filter circuit and a voltage stabilizing circuit, the input voltage range is 220V +/-15%, and the power supply is connected with the microprocessor and provides working power supply for other components outside the dehumidifying device through the microprocessor. The microprocessor selects a 51-chip microcomputer, and the specific model is STC89C51 with high performance and low power consumption.
The temperature sensors outside and in the cabinet are digital temperature sensors AD590, the temperature sensor has the characteristics of low cost of a single chip integrated circuit and no need of a supporting circuit, the AD590 acquires the temperature inside and outside the switch cabinet, the microprocessor controls the heater to work, and the temperature measuring range and the precision are-55 ℃ to 150 +/-0.3 ℃. In addition, the temperature sensor outside the cabinet is arranged on a door plate of a low-pressure chamber of the switch cabinet and is provided with a special installation shell, so that the corrosion of the external severe environment is avoided, and the shell is provided with an air vent so as to ensure the accuracy of the measured value of the temperature sensor. The temperature sensor in the cabinet is arranged on the lower clapboard of the low-pressure chamber of the switch cabinet and is provided with a special installation shell, and the shell is fixed on the lower clapboard of the low-pressure chamber and conducts the temperature of the clapboard to the temperature sensor through a copper plate embedded in the shell so as to ensure the working precision of the temperature sensor.
The heater receives signals sent by the microprocessor to work, a DJR series aluminum alloy comb-shaped heater is adopted, a special aluminum alloy radiating plate section bar and a high-quality nickel-chromium alloy electric heating wire are adopted, the using temperature is-40 ℃ to 200 ℃, the size is small, the heat radiation is uniform, and the radiating surface is large and is 2-3 times larger than that of a common heater with the same size.
The humidity sensor in the cabinet adopts a capacitance type humidity-sensitive sensor HS1101LF and adopts a solid polymer structure, so that the humidity sensor can be used for designing large-capacity and low-cost application, the sensitivity of HS1101LF is high, the response speed is high, the hysteresis quantity of humidity is small, the measured humidity value is sent to a microprocessor, the humidity measuring range and the precision in the cabinet are 1% -99% +/-1%, and the measuring result has lower error.
The dehumidifying device comprises an air pipe, a fan, a condensation chamber, a semiconductor refrigerating sheet, a drain pipe and a permeable membrane. The power supply supplies power to the dehumidifying device through the relay. The tuber pipe stretches out outside the cubical switchboard, and one end sets up the fan of giving vent to anger, and the other end sets up inlet fan, and the corresponding hole department of cubical switchboard is installed to fan and inlet fan of giving vent to anger, outlet fan and inlet fan's protection level is IP 54. The other end of tuber pipe is through the condensation room, through semiconductor refrigeration piece refrigeration back, and the comdenstion water is through the drain pipe discharge, and the drain pipe sets up the one-way permeable membrane of one deck with condensation room junction, prevents external moisture admission device.
And the RS485 communication interface is connected with the microprocessor and used for transmitting data or instructions. The display is a nixie tube display and is used for displaying the temperature value, the temperature difference and the humidity value inside and outside the cabinet received by the microprocessor.
Example (b):
the intelligent condensation preventing device for the switch cabinet consists of a power supply, a microprocessor, an outside-cabinet temperature sensor, an inside-cabinet temperature sensor, a heater, an inside-cabinet humidity sensor, a dehumidifying device, an RS485 communication interface and a display. The power supply supplies power to all components except the dehumidifying device through the microprocessor, and the power supply supplies power to the dehumidifying device through the relay.
The two temperature sensors respectively collect the temperature inside and outside the cabinet, the microprocessor receives the temperature collected by the temperature sensors, the microprocessor controls the heater to work according to the temperature difference inside and outside the switch cabinet, and the starting conditions of the heater (any one of the conditions meets the requirement of starting heating immediately): (1) when the temperature in the cabinet-the temperature outside the cabinet is less than or equal to 2 ℃; (2) when the temperature in the cabinet is less than or equal to 5 ℃; (3) and (4) manually and forcibly heating. The heating stop condition (while the following conditions are satisfied, the heating is stopped): the temperature in the cabinet-the temperature outside the cabinet is more than 3 ℃; (2) the temperature in the cabinet is >15 ℃.
The structure of the dehumidifying device is shown in figure 2, and comprises an air pipe, a fan, a condensation chamber, a semiconductor refrigerating sheet, a drain pipe and a water permeable membrane. When the humidity sensor in the switch cabinet detects that the humidity in the cabinet is greater than 70% RH, microprocessor control dehydrating unit starts, the air discharge tuber pipe of fan in to the switch cabinet of giving vent to anger, inlet fan inhales the switch cabinet with the air in the tuber pipe, make the air in the switch cabinet pass through tuber pipe circulation flow, at this in-process, the semiconductor refrigeration piece condensation water droplet in the air contact condensation chamber, the comdenstion water is discharged from the drain pipe, thereby reach the effect that reduces the interior air humidity of switch cabinet. The one-way permeable membrane at the joint of the drain pipe and the condensation chamber can prevent external moisture from entering the device, and the sealing performance of the air pipe is improved. When the humidity sensor detects that the humidity in the switch cabinet is less than 60% RH, the microprocessor controls the dehumidifying device to stop working.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (9)
1. Condensation device is prevented to cubical switchboard intelligence, its characterized in that: the intelligent cabinet temperature control system comprises a power supply, a microprocessor, a temperature sensor outside the cabinet, a temperature sensor inside the cabinet, a heater, a humidity sensor inside the cabinet, a dehumidifying device, an RS485 communication interface and a display;
the power supply comprises a voltage reduction circuit, a rectifying circuit, a filter circuit and a voltage stabilizing circuit, the input voltage range is 220V +/-15%, the power supply is connected with the microprocessor, and the microprocessor provides a working power supply for other components outside the dehumidifying device;
the RS485 communication interface is connected with the microprocessor and used for transmitting data or instructions;
the display is a nixie tube display and is used for displaying the temperature value, the temperature difference and the humidity value inside and outside the cabinet received by the microprocessor.
2. The intelligent condensation preventing device for the switch cabinet according to claim 1, wherein: the microprocessor adopts a 51-chip microcomputer with the model of STC89C 51.
3. The intelligent condensation preventing device for the switch cabinet according to claim 1, wherein: the temperature sensor outside the cabinet and the temperature sensor inside the cabinet adopt digital temperature sensors AD590 for acquiring the temperature inside and outside the switch cabinet and are in signal connection with the microprocessor.
4. The intelligent condensation preventing device for the switch cabinet according to claim 1, wherein: the temperature sensor outside the cabinet is arranged on a door plate of a low-pressure chamber of the switch cabinet and is provided with an installation shell, and the shell is provided with an air vent so as to ensure the accuracy of the measured value of the temperature sensor.
5. The intelligent condensation preventing device for the switch cabinet according to claim 1, wherein: the temperature sensor in the cabinet is arranged on a lower partition plate of a low-pressure chamber of the switch cabinet and is provided with an installation shell, and the shell is fixed on the lower partition plate of the low-pressure chamber and conducts the temperature of the partition plate to the temperature sensor through an embedded copper plate so as to ensure the working precision of the temperature sensor.
6. The intelligent condensation preventing device for the switch cabinet according to claim 1, wherein: the heater is a DJR series aluminum alloy comb-shaped heater, an aluminum alloy radiating plate section and a nickel-chromium alloy heating wire are adopted and are in signal connection with the microprocessor, and the use temperature is-40 ℃ to 200 ℃.
7. The intelligent condensation preventing device for the switch cabinet according to claim 1, wherein: the temperature sensor in the cabinet adopts a capacitance type humidity-sensitive sensor HS1101LF and is in signal connection with the microprocessor.
8. The intelligent condensation preventing device for the switch cabinet according to claim 1, wherein: the dehumidifying device comprises an air pipe, a fan, a condensation chamber, a semiconductor refrigerating sheet, a drain pipe and a water permeable membrane;
the tuber pipe stretches out outside the cubical switchboard, and one end sets up the fan of giving vent to anger, and the other end sets up inlet fan, and the corresponding hole department of cubical switchboard is installed to fan and inlet fan of giving vent to anger, outlet fan and inlet fan's protection level is IP 54.
9. The intelligent condensation preventing device for the switch cabinet according to claim 8, wherein: and a one-way water permeable membrane is arranged at the joint of the drain pipe and the condensation chamber to prevent external moisture from entering the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021472023.XU CN212784437U (en) | 2020-07-23 | 2020-07-23 | Intelligent condensation preventing device for switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021472023.XU CN212784437U (en) | 2020-07-23 | 2020-07-23 | Intelligent condensation preventing device for switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN212784437U true CN212784437U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021472023.XU Expired - Fee Related CN212784437U (en) | 2020-07-23 | 2020-07-23 | Intelligent condensation preventing device for switch cabinet |
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| Country | Link |
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| CN (1) | CN212784437U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113778146A (en) * | 2021-09-13 | 2021-12-10 | 浙江华云清洁能源有限公司 | Condensation preventing method and device for control cabinet |
| CN113970357A (en) * | 2021-11-30 | 2022-01-25 | 河南职业技术学院 | Power switch cabinet detection circuit based on Internet of things |
-
2020
- 2020-07-23 CN CN202021472023.XU patent/CN212784437U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113778146A (en) * | 2021-09-13 | 2021-12-10 | 浙江华云清洁能源有限公司 | Condensation preventing method and device for control cabinet |
| CN113778146B (en) * | 2021-09-13 | 2023-02-24 | 浙江华云清洁能源有限公司 | Condensation preventing method and device for control cabinet |
| CN113970357A (en) * | 2021-11-30 | 2022-01-25 | 河南职业技术学院 | Power switch cabinet detection circuit based on Internet of things |
| CN113970357B (en) * | 2021-11-30 | 2023-06-23 | 河南职业技术学院 | Power switch cabinet detection circuit based on Internet of things |
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