CN213660163U - Intelligent maintenance-free moisture absorber capable of detecting breathing state of transformer - Google Patents
Intelligent maintenance-free moisture absorber capable of detecting breathing state of transformer Download PDFInfo
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- CN213660163U CN213660163U CN202022449966.7U CN202022449966U CN213660163U CN 213660163 U CN213660163 U CN 213660163U CN 202022449966 U CN202022449966 U CN 202022449966U CN 213660163 U CN213660163 U CN 213660163U
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Abstract
An intelligent maintenance-free moisture absorber capable of detecting the breathing state of a transformer comprises a toughened glass cylinder filled with a drying agent, a heater is arranged in the toughened glass cylinder, a flange used for connecting a breathing tube of the transformer is arranged at the top end of the toughened glass cylinder, an air hole is formed in the center of the flange, and a positive and negative pressure sensor and a temperature and humidity sensor are arranged between the flange and the toughened glass cylinder; an air inlet and an air outlet are arranged below the toughened glass cylinder, and the air inlet and the air outlet are also used as water outlets; the side surface of the toughened glass cylinder is fixedly provided with a control box, the control box comprises a central processing unit, the central processing unit is connected with a power supply module and an output module, and the heater, the positive and negative pressure sensor and the temperature and humidity sensor are all electrically connected with the central processing unit of the control box. After the silica gel in the moisture absorber absorbs moisture and is saturated, the silica gel is heated and regenerated, the moisture absorption performance of the silica gel is recovered, the purpose of being free of maintenance is achieved, the breathing state of the transformer is detected, and the respirator is prevented from being blocked.
Description
Technical Field
The utility model belongs to the technical field of the transformer desiccator, concretely relates to intelligent non-maintaining desiccator of detectable transformer respiratory state.
Background
In a power transmission and transformation system, a transformer is the most basic and important device for realizing electric energy conversion, and has a great influence on power supply reliability. The moisture absorber is a device for removing and drying moisture in air of the transformer or mutual inductor oil conservator, is arranged on an air inlet of the transformer or mutual inductor oil conservator, and mainly plays a role in keeping transformer oil dry and clean. When the oil volume of the transformer or the mutual inductor expands and contracts due to the change of the oil temperature in the operation process, the gas in the oil storage cabinet is forced to breathe through the moisture absorber, the air enters the transformer through the filter at the lower part of the moisture absorber and the glass tank filled with silica gel, and the sucked gas can be ensured to be dry (the moisture is adsorbed by the drying agent) and clean (the dust impurities are blocked by the filter) so as to keep the cleanness and the insulation strength of the transformer oil.
After the moisture absorber operates for a period of time, the moisture absorption capacity of the allochroic silica gel is gradually weakened until the allochroic silica gel loses efficacy due to continuous absorption of moisture in air entering the transformer, the allochroic silica gel needs to be replaced after the allochroic silica gel thoroughly loses efficacy, and the replaced allochroic silica gel can also have adverse effects on the environment. In addition, when changing the color-changing silica gel that became invalid, need apply for the operation that has a power failure to the scheduling personnel, whole process need consume a large amount of time and human cost. Because the moisture absorber is connected near the conservator and is close to the electrified part, and the patrol personnel need to ascend at times for operation, therefore have certain operation risk.
Disclosure of Invention
In order to eliminate the above-mentioned disadvantage, the utility model provides an intelligent non-maintaining desiccator of detectable transformer breathing state, after the silica gel moisture absorption saturation in the desiccator, heat regeneration to silica gel, resume its hygroscopic property, reach non-maintaining's purpose, detect the breathing state of transformer simultaneously, prevent that the respirator from blockking up.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an intelligent maintenance-free moisture absorber capable of detecting the breathing state of a transformer comprises a toughened glass cylinder filled with a drying agent, a heater is arranged in the toughened glass cylinder, a flange used for connecting a breathing tube of the transformer is arranged at the top end of the toughened glass cylinder, an air hole is formed in the center of the flange, and a positive and negative pressure sensor and a temperature and humidity sensor are arranged between the flange and the toughened glass cylinder; an air inlet and an air outlet are arranged below the toughened glass cylinder, and the air inlet and the air outlet are also used as water outlets; the side surface of the toughened glass cylinder is fixedly provided with a control box, the control box comprises a central processing unit, the central processing unit is connected with a power supply module and an output module, and the heater, the positive and negative pressure sensor and the temperature and humidity sensor are all electrically connected with the central processing unit of the control box.
Further, the drying agent is silica gel.
Furthermore, a stainless steel isolation filter screen is arranged between the drying agent and the toughened glass cylinder.
Furthermore, a status indicator lamp is arranged on the surface of the control box and connected with an output module of the control box.
Further, the heater is a PTC heating plate.
Further, the positive and negative pressure sensors employ PTL 615.
The utility model has the advantages that:
the method comprises the steps of detecting the air humidity entering a transformer through a moisture absorber through a temperature and humidity sensor, judging that silica gel is saturated in moisture absorption when the humidity reaches a set value, starting heating, drying the silica gel, recovering the moisture absorption capacity of the silica gel, heating the silica gel at regular time through a timer after the temperature and humidity sensor fails, adding a positive and negative pressure micro-pressure gauge between the silica gel and the transformer, judging the breathing state according to different pressure values during breathing, and judging that a respirator is blocked when the pressure exceeds the set value.
When the temperature of the transformer oil rises and the transformer oil exhales, the pressure value is larger than the normal pressure, and the gas in the transformer oil conservator is exhaled through the maintenance-free moisture absorber; when the temperature of the transformer is reduced and air is sucked, the pressure value is smaller than a normal value, and external air enters the transformer oil conservator after being dried by the maintenance-free moisture absorber; when the maintenance-free moisture absorber is blocked and air is sucked, the alarm can be given when the pressure is smaller than a set value; when the pressure is higher than the set value during expiration, an alarm is given.
Drawings
Fig. 1 is a view of the construction of a maintenance-free dehydrating breather;
fig. 2 is a cross-sectional view of the maintenance-free breather, with arrows indicating gas flow paths;
FIG. 3 is a view showing the structure of a control box;
fig. 4 is a logic diagram of a maintenance-free breather;
in the figure, 1 is a connecting flange, 2 is a positive and negative pressure sensor, 3 is a status indicator lamp, 4 is a silica gel desiccant, 5 is a control box, 6 is a toughened glass cylinder, 7 is a stainless steel isolation filter screen, 8 is an air inlet and an air outlet, 9 is a heater, 10 is a temperature and humidity sensor, 11 is a central processing unit, 12 is a power supply module, and 13 is an output module.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments:
as shown in fig. 1 to 3, an intelligent maintenance-free moisture absorber capable of detecting a breathing state of a transformer comprises a toughened glass cylinder 6 filled with a silica gel desiccant 4, wherein in the process of drying the silica gel desiccant, evaporated water vapor meets the toughened glass cylinder with a lower temperature and is condensed into water flow to the bottom and is discharged through a bottom hole; a stainless steel isolation filter screen 7 is arranged between the drying agent 4 and the toughened glass cylinder 6. The aperture is 2mm, silica gel particles are isolated, and the silica gel particles are generally larger than 3mm, so that the gas can pass through; a PTC heating plate heater 9 is arranged in the toughened glass cylinder 6, a flange 1 for connecting a breathing tube of the transformer is arranged at the top end of the toughened glass cylinder 6, a gas passing hole is arranged in the center of the flange 1, and 4 holes on the periphery are M14 bolt connecting holes; a positive and negative pressure sensor 2 and a temperature and humidity sensor 10 are arranged between the flange 1 and the toughened glass cylinder 6; the positive and negative pressure sensors 2 adopt PTL 615;
the positive and negative pressure sensor judges the breathing state by detecting the air pressure value between the silica gel and the conservator, when the transformer is not breathing, the gauge pressure is 0, the gauge pressure is positive pressure during expiration, the gauge pressure is negative pressure during inspiration, and after blockage, the absolute value of the pressure exceeds a set value; temperature and humidity sensor 10 mainly monitors air humidity and temperature in the maintenance-free moisture absorber entering breathing pipe, through the control to humidity, realize that the automatic stoving of silica gel recovers, after air humidity in the breathing pipe reaches the setting value, again according to positive negative pressure sensor 2's value, if for the malleation, then start heater 9 dries the silica gel desicator, after the evaporation of water in silica gel 4 comes out, run into toughened glass section of thick bamboo 6, the condensation is water, leave the discharge along the pipe wall, silica gel 4 resumes the moisture absorption ability.
An air inlet and outlet 8 is arranged below the toughened glass cylinder 6, and the air inlet and outlet 8 is also used as a water outlet; when breathing, the air exchanges with the outside through the air exchange device, when heating and drying, the air exchange device is also a water outlet, and the dried water vapor flows down to the water outlet along the glass wall to be discharged when meeting the glass cooling.
A control box 5 is fixed on the side surface of the toughened glass cylinder 6, is made of aluminum alloy, and is waterproof and high-temperature resistant; the control box 5 comprises a central processing unit 11, the central processing unit 11 is connected with a power supply module 12 and an output module 13, and the heater 9, the positive and negative pressure sensors 2 and the temperature and humidity sensor 10 are all connected with the central processing unit 11 of the control box 5. Be equipped with status indicator lamp 3 on control box 5 surface, status indicator lamp 3 is connected with control box 5's output module 13, and green red yellow respectively, green instruction power switch-on, normal condition, red instruction are silica gel stoving heating state, and yellow instruction is the fault state, divide into heating trouble, sensor trouble and jam trouble.
The working principle of the application is as follows:
as shown in fig. 4, the real-time humidity of the humidity sensor is collected, if the real-time humidity is not higher than the set value, the set value is 50%, the accumulated operation time is compared with the timer T, the timer T is set to be generally between 30 days and 90 days according to the climate condition on site, if the accumulated operation time is smaller than the timer T, the circulating monitoring of the humidity value is continued, if the humidity value is larger than the set value, or the accumulated operation time exceeds the timer T, the pressure value of the moisture absorber at the moment is judged, if the pressure value is negative pressure, namely the moisture absorber is in the air suction state, the pressure is continuously judged after the time delay T1, the time T1 is set to be 30 minutes until the pressure is not negative pressure, namely the state of the moisture absorber is not air suction, the silica gel can be dried, the water vapor suction caused by the drying of the silica gel during the air suction is prevented, after the silica, and the process is restarted.
The central processing unit 11 converts alternating current 220V into direct current 24V through the power module, converts 24V into 5V, converts 5V into 3.3V to supply power to the central processing unit 11, the temperature and humidity sensor 10 converts real-time temperature and humidity into 0-10V signals and feeds the signals back to the central processing unit 11, the positive and negative pressure sensor 2 converts pressure values into-10-10V signals and feeds the signals back to the central processing unit 11, the central processing unit 11 determines whether the heater 9 needs to be started to dry, heat and restore silica gel according to the collected humidity and pressure in combination with time delay, and the output module 13 outputs the signals to the indicator lamp to indicate according to the real-time device state.
This application has increased positive negative pressure sensor, surpasss the setting value or the operation accumulative total time exceeds the setting value after at the humidity value, judges the respiratory state of transformer again according to the pressure value, and the negative pressure is for breathing in, and the malleation is for breathing in, can not dry the heating operation when breathing in, only just can dry the heating in the non-inspiratory state.
Claims (6)
1. An intelligent maintenance-free moisture absorber capable of detecting the breathing state of a transformer is characterized by comprising a toughened glass cylinder (6) filled with a drying agent (4), a heater (9) is arranged inside the toughened glass cylinder (6), a flange (1) used for connecting a breathing pipe of the transformer is arranged at the top end of the toughened glass cylinder (6), a gas passing hole is formed in the center of the flange (1), and a positive and negative pressure sensor (2) and a temperature and humidity sensor (10) are arranged between the flange (1) and the toughened glass cylinder (6); an air inlet and outlet (8) is arranged below the toughened glass cylinder (6), and the air inlet and outlet (8) is also used as a water outlet;
a control box (5) is fixed on the side face of the toughened glass cylinder (6), the control box (5) comprises a central processing unit (11), the central processing unit (11) is connected with a power module (12) and an output module (13), and a heater (9), a positive and negative pressure sensor (2) and a temperature and humidity sensor (10) are electrically connected with the central processing unit (11) of the control box (5).
2. The intelligent maintenance-free dehydrating breather of claim 1, wherein the desiccant is silica gel.
3. The intelligent maintenance-free moisture absorber capable of detecting the breathing state of the transformer as claimed in claim 1, wherein a stainless steel isolation screen (7) is arranged between the drying agent (4) and the toughened glass cylinder (6).
4. The intelligent maintenance-free moisture absorber capable of detecting the breathing state of the transformer as claimed in claim 1, wherein a state indicator lamp (3) is arranged on the surface of the control box (5), and the state indicator lamp (3) is connected with the output module (13) of the control box (5).
5. The intelligent maintenance-free moisture absorber capable of detecting the breathing state of the transformer as claimed in claim 1, wherein the heater (9) is a PTC heating plate.
6. The intelligent maintenance-free moisture absorber capable of detecting the breathing state of the transformer as claimed in claim 1, wherein the positive and negative pressure sensors (2) adopt a PTL 615.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022449966.7U CN213660163U (en) | 2020-10-29 | 2020-10-29 | Intelligent maintenance-free moisture absorber capable of detecting breathing state of transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022449966.7U CN213660163U (en) | 2020-10-29 | 2020-10-29 | Intelligent maintenance-free moisture absorber capable of detecting breathing state of transformer |
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| CN213660163U true CN213660163U (en) | 2021-07-09 |
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| CN202022449966.7U Active CN213660163U (en) | 2020-10-29 | 2020-10-29 | Intelligent maintenance-free moisture absorber capable of detecting breathing state of transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115172017A (en) * | 2022-07-29 | 2022-10-11 | 陕西金源自动化科技有限公司 | Maintenance-free moisture absorber, electrical equipment and respiratory state monitoring method |
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2020
- 2020-10-29 CN CN202022449966.7U patent/CN213660163U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115172017A (en) * | 2022-07-29 | 2022-10-11 | 陕西金源自动化科技有限公司 | Maintenance-free moisture absorber, electrical equipment and respiratory state monitoring method |
| CN115172017B (en) * | 2022-07-29 | 2024-03-08 | 陕西金源自动化科技有限公司 | Maintenance-free moisture absorber, electrical equipment and respiration state monitoring method |
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