Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Maintenance-free moisture absorber and method for controlling the same

A control method and moisture absorber technology, which are applied in the direction of temperature control using electric methods, auxiliary controllers with auxiliary heating devices, transformer/inductor cooling, etc., can solve the problem of environmental temperature and threats to the measurement accuracy of weighing sensors Reliable operation of the transformer, failure to observe the breathing state and other problems, to achieve the effect of improving accuracy and work efficiency, convenient control, and avoiding errors

Active Publication Date: 2015-10-14
陕西金源自动化科技有限公司
View PDF5 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MR company's maintenance-free dehumidifier has the following problems. 1. Judging the failure of silica gel through humidity detection is an indirect method, and there is a problem of inaccurate identification. If the humidity of the outside air is not high, even after filtering the invalid silica gel Its humidity is also very small, so the equipment thinks that the silica gel is effective, which is a mistake
2. The air intake and outlet of the vent hole of the transformer oil conservator change in real time along with the thermal expansion and contraction of the oil, and the thermal expansion and contraction of the oil changes with the transformer load, and there is no rule to follow
This will cause the possibility that hot and humid steam will be sucked into the transformer oil conservator when the silica gel is being heated and dehydrated, further threatening the reliable operation of the transformer
3. The air intake and outlet part of the maintenance-free dehumidifier adopts the structure of metal sintered mesh, which plays the role of filtering air dust, but the breathing state cannot be observed. The original traditional dehumidifier is equipped with an oil cup. When exhaling and inhaling There will be air bubbles, and the transformer user can observe this phenomenon, which is helpful to judge whether the air hole of the oil conservator is unblocked, because once the air hole is blocked, the gas relay will malfunction, and then the transformer will be cut off.
After statistical analysis by users, COMEN's maintenance-free dehumidifier also has several problems. 1. The measurement accuracy of the load cell is limited by the ambient temperature and the vibration of the transformer itself during operation. The weight change after the silica gel absorbs moisture is Trace level, silica gel can be judged by weighing whether it is saturated with moisture The principle is limited to the laboratory environment
2. When the maintenance-free dehumidifier with double-tube structure is used in a large-capacity transformer, the volume is too large, which is not conducive to design and installation
3. The breathing state is still unobservable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Maintenance-free moisture absorber and method for controlling the same
  • Maintenance-free moisture absorber and method for controlling the same
  • Maintenance-free moisture absorber and method for controlling the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038]The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0039] A maintenance-free moisture absorber of the present invention, such as figure 1 As shown, it includes a connecting flange 1, an upper connecting seat 2, a condensation cover 3 and an air inlet and outlet assembly 4 connected in sequence, a moisture-absorbing silica gel 5 arranged in the condensation cover 3 and a heating device for drying the moisture-absorbing silica gel 5, and The control box 6 used to control the heating device is arranged outside the condensation cover 3; a breathing tube 7 is arranged in the hygroscopic silica gel 5, and the breathing tube 7 communicates with the connection end of the air inlet and outlet assembly 4 through the hygroscopic silica gel 5; figure 1 and figure 2 As shown, a condensing chamber 8 is arranged in the upper connecting seat 2, and one end ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A maintenance-free moisture absorber comprises a connecting flange, an upper connecting base, a condensation cover and an air inlet and outlet module, moisture absorbing silica gel, a heating device and a control box, wherein the connecting flange, the upper connecting base, the condensation cover and the air inlet and outlet module are sequentially connected; the moisture absorbing silica gel and the heating device are arranged in the condensation cover; and the control box is positioned outside the condensation cover. A breathing tube communicated with the connecting end of the air inlet and outlet module through the moisture absorbing silica gel is arranged in the moisture absorbing silica gel, a condensation cavity is positioned in the upper connecting base, one end of the condensation cavity defined by an air duct is communicated with the top end of the breathing tube, and the other end of the condensation cavity is communicated with a flange opening of the connecting flange. A semiconductor refrigeration piece and a radiator are symmetrically arranged on the outer portion of the air duct, and the semiconductor refrigeration piece is connected to the refrigeration control end of the control box. A method for controlling the maintenance-free moisture absorber comprises collecting color information of the moisture absorbing silica gel in real time; comparing an RGB value at the set comparison moment and position on the day and a set RGB value; if the RGB value at the set comparison moment and position on the day is larger than the set RGB value, setting a night dehydration control mark, first starting to perform refrigeration and then performing heating; after the reduction process of the moisture absorbing silica gel is ended, first stopping heating and then stopping refrigeration; or else resetting.

Description

technical field [0001] The invention relates to a moisture absorber for a transformer oil conservator, in particular to a maintenance-free moisture absorber and a control method thereof. Background technique [0002] Hygroscopic silica gel is used as an air humidity filter material to filter the vent holes on the transformer oil conservator, mainly to filter out moisture and dust in the air. Use color-changing silica gel to judge whether the hygroscopic material is invalid by observing with human eyes. In the past, if 1 / 3 of the silica gel was found to be discolored, it was necessary to replace it with a new silica gel. The expired silica gel can only be disposed of. [0003] In response to the above problems, the German MR company has developed a device that automatically restores invalid silica gel through online heating, named it a maintenance-free dehumidifier. Most people think that the silica gel is invalid, and start the heating device to heat and dehydrate the silic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/14G05D23/30
Inventor 鲍明杰柯常军张毓龙
Owner 陕西金源自动化科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products