Self-cleaning intelligent maintenance-free moisture absorber

Abstract

The self-cleaning intelligent maintenance-free moisture absorber comprises an upper end part, a lower end part and a condensation shell, a dehumidification drying chamber is arranged in the condensation shell, the upper end part is provided with a secondary chamber, and the secondary chamber comprises a first chamber, a second chamber and a two-way non-return mechanism; the secondary chamber is provided with a breathing air mechanism communicated with the first chamber and an exhaust mechanism communicated with the second chamber, and a heating mechanism is arranged in the dehumidification drying chamber; an air inlet and outlet pipe is arranged at the lower end, an air supply mechanism and a filtering piece are arranged in the air inlet and outlet pipe, the filtering piece is conical, the air inlet and outlet pipe is provided with a dust accumulation groove, and the air supply mechanism is provided with a sweeping assembly used for sweeping the two opposite side faces of the filtering piece. A water outlet channel communicated with the dust accumulation groove is formed in the pipe wall of the air inlet and outlet pipe. Dewatering and drying of the dehumidification drying chamber and impurity removal of the dust accumulation groove are achieved, and the frequency of shutdown maintenance is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a self-cleaning intelligent maintenance-free desiccant. Background Art

[0002] During operation, power equipment is susceptible to frost buildup due to ambient humidity, which can degrade insulation performance and even cause equipment failure. Currently, moisture protection for electronic equipment is primarily achieved through desiccant systems. Traditional desiccant systems require regular replacement of the absorbent or manual maintenance, resulting in high maintenance costs and low efficiency. With the development of smart grids, the demand for maintenance-free and intelligent power equipment is growing, creating an urgent need for desiccant technology that can automatically clean itself without manual intervention.

[0003] In the existing technology, common desiccant solutions include silica gel desiccant, molecular sieve desiccant, and heated desiccant. Silica gel desiccant absorbers absorb moisture through silica gel. Once the silica gel is saturated, it needs to be dehydrated by heating. After dehydration, the silica gel can absorb moisture again.

[0004] Common desiccant will have a metal filter at the lower end to filter impurities in the gas during the transformer's inhalation and exhalation process. However, after long-term use, impurities will accumulate and adhere to the metal filter, thereby affecting the flow of gas. Therefore, the metal filter of the desiccant needs to be replaced or cleaned regularly, and the air supply needs to be stopped, which has certain intermittent disadvantages. Summary of the Invention

[0005] The purpose of this application is to provide a self-cleaning intelligent maintenance-free desiccant. In order to solve the problem of replacing or cleaning the metal filter of the desiccant, the air supply needs to be stopped, which has certain intermittent disadvantages.

[0006] The present application provides a self-cleaning intelligent maintenance-free dehumidifier that adopts the following technical solutions: A self-cleaning intelligent maintenance-free dehumidifying breather, comprising an upper end, a lower end, and a condensing shell disposed between the upper and lower ends; a dehumidifying and drying chamber is disposed within the condensing shell; the upper end is provided with a secondary chamber connected to the dehumidifying and drying chamber; the secondary chamber comprises a first chamber, a second chamber, and a two-way non-return mechanism for controlling the connection or isolation between the first chamber and the second chamber; the secondary chamber is provided with a breathing mechanism connected to the first chamber and an exhaust mechanism connected to the second chamber; and a heating mechanism is provided in the dehumidifying and drying chamber; The lower end portion is provided with an air inlet and outlet pipe connected to the dehumidification and drying chamber, and an air supply mechanism and a filter element covering the gas flow range are provided in the air inlet and outlet pipes. The filter element is conically arranged and the radius decreases step by step toward the dehumidification and drying chamber. The pipe wall of the air inlet and outlet pipes is provided with a dust accumulation groove corresponding to the edge of the filter element, and the air supply mechanism is provided with a cleaning component for cleaning the two facing sides of the filter element. The upper end surface of the lower end portion is provided with a drainage channel connected to the dust accumulation groove, and the pipe wall of the air inlet and outlet pipes is provided with a water outlet channel connected to the dust accumulation groove.

[0007] By adopting the above technical solution, when the transformer inhales air, the breathing air mechanism opens, the exhaust mechanism and the heating mechanism close, the two-way non-return mechanism connects the first chamber and the second chamber, and the air supply mechanism introduces air from the inlet and outlet pipes into the dehumidification and drying chamber. The dehumidified dry air enters the second chamber of the secondary chamber, and then enters the transformer through the two-way non-return mechanism, the first chamber and the breathing air mechanism.

[0008] When the transformer exhales, the breathing air mechanism opens, the exhaust mechanism and the heating mechanism close, and the two-way non-return mechanism connects the first chamber and the second chamber. The gas enters the first chamber of the secondary chamber through the breathing air mechanism, and then passes through the two-way non-return mechanism and the second chamber, and finally enters the dehumidification and drying chamber. The air supply mechanism then discharges the dehumidified and dried gas from the dehumidification and drying chamber through the inlet and outlet pipes, thereby achieving the effect of dehumidification and drying of the maintenance-free dehumidifying breather during both the inhalation and exhalation processes of the transformer.

[0009] The filter is tapered, and the cleaning assembly cleans the filter surface. Dust on the upper side of the filter gradually falls into the dust trough along the inclined surface. During the breathing process, the air flow also blows the dust into the dust trough. Dust on the lower side of the filter is discharged through the inlet and outlet pipes during the transformer's exhalation. This achieves self-cleaning of the filter, reducing the frequency of downtime for filter replacement or cleaning.

[0010] At the same time, when the dehumidification and drying chamber is dehydrating and drying, the two-way check mechanism blocks the connection between the first and second chambers, the breathing air mechanism closes, and the exhaust mechanism and heating mechanism open. The dehumidification and drying chamber, heated, dehydrates and produces water vapor. Because the temperature outside the condensation shell is lower than that inside, the water vapor condenses into water on contact with the inner wall of the condensation shell and flows downward along the inner wall of the condensation shell. The water flows into the drainage channel at the lower end, passes through the dust accumulation trough, and washes away the dust inside the trough before being discharged through the water outlet channel. In addition, some water vapor enters the second chamber and is discharged through the exhaust mechanism, effectively reducing the risk of water vapor entering the transformer and causing damage, achieving dehydration and drying in the dehumidification and drying chamber and cleaning of the dust accumulation trough, effectively reducing the frequency of maintenance shutdowns.

[0011] Optionally, the filter element includes a fixing ring fixedly arranged on the circumferential pipe wall of the inlet and outlet air pipes, a connecting ring axially arranged on the inner side of the fixing ring, and a conical mesh surface arranged between the fixing ring and the connecting ring.

[0012] By adopting the above technical solution, the fixing ring is fixedly connected to the circumferential pipe wall of the inlet and outlet pipes, and the conical mesh surface is connected between the fixing ring and the connecting ring, thereby ensuring the structural strength of the filter element.

[0013] Optionally, the cleaning assembly includes a rotating shaft axially connected to the connecting ring, two sleeves axially fixed on the rotating shaft, and a cleaning rod circumferentially inclined on the sleeve, the cleaning rod contacts the side of the corresponding conical mesh surface, the two sleeves are symmetrically arranged on both sides of the connecting ring, and the air supply mechanism is provided with a first driving member that drives the rotating shaft to rotate.

[0014] By adopting the above technical solution, the first driving member drives the rotating shaft to rotate, the rotating shaft drives the two shaft sleeves to rotate, and the shaft sleeves drive the cleaning rod to perform circumferential movement on the corresponding conical mesh surface to achieve a cleaning effect on the filter element.

[0015] Optionally, a sedimentation trough is provided on the upper end surface of the lower end portion, one end of the drainage channel passes through the trough wall of the sedimentation trough, a water collecting block with a water collecting trough is slidingly provided in the sedimentation trough, a first resetting member is provided in the sedimentation trough for driving the water collecting block to reset and slide, and a first water outlet hole corresponding to one end of the drainage channel is opened through the trough wall of the water collecting trough.

[0016] By adopting the above technical solution, when the dehumidification and drying chamber is performing dehydration and drying, water flows into the water collection trough. Only an appropriate amount of water is accumulated, and gravity drives the water collection block to slide toward the sedimentation trough. The first reset member is subjected to elastic deformation and maintains the tendency of elastic reset. After the force is reduced, the first reset member drives the water collection block to reset. When the first water outlet is aligned with one end of the drainage channel, water flows into the drainage channel. By accumulating water, the flow rate and flow rate of water flowing into the drainage channel can be increased, ensuring the flushing effect of dust in the dust trough. At the same time, when the dehumidification and drying chamber is not performing dehydration and drying, the water collection block resets and blocks one end of the drainage channel, reducing the flow of gas into the drainage channel, thereby reducing the dust in the dust trough from being blown out of the ash trough by the gas flow.

[0017] Optionally, the lower end wall of the ash trough is provided with a movable groove and an ash collecting block slidably arranged in the movable groove, the ash collecting block is provided with an ash collecting groove, one end of the drainage channel passes through the upper end wall of the ash trough and corresponds to the groove opening of the ash collecting trough, one end of the water outlet channel passes through the wall of the movable trough, and a second reset component is provided in the movable trough to drive the ash collecting block to reset and slide, and a second water outlet hole corresponding to one end of the water outlet channel is opened through the wall of the ash collecting trough.

[0018] By adopting this technical solution, when the dehumidifying and drying chamber is performing dehydration and drying, the released water flows into the ash collection trough, driving the ash collection block toward the inside of the movable trough. The second reset member is elastically deformed by the force and maintains its elastic reset tendency. After the force is reduced, the second reset member resets the ash collection block. The second water outlet aligns with one end of the water outlet channel to discharge water and dust, while also reducing water splashing out of the ash collection trough and outflowing from the ash accumulation trough.

[0019] Optionally, the groove wall of the ash accumulation trough is provided with a sliding groove, and a stopper is slidingly provided in the sliding groove. The stopper is linked to the ash collecting block through a connecting rope. The stopper can open and close the groove opening of the ash accumulation trough, and a third reset part is provided in the sliding groove to drive the stopper to reset and slide.

[0020] By adopting the above technical solution, when the ash collecting block moves toward the inside of the movable groove, the ash collecting block drives the stopper to close the notch of the ash accumulation groove through the connecting rope. At this time, the third reset member is subjected to force to produce elastic deformation and maintain the trend of elastic reset. After the force is reduced, the third reset member drives the stopper to reset and open the notch of the ash accumulation groove.

[0021] Optionally, the two-way non-return mechanism includes a partition plate arranged between the first chamber and the second chamber, an intermediate plate axially rotatably arranged in the partition plate, and a second driving member arranged on the outer wall of the secondary chamber and used to drive the intermediate plate to rotate. A first air guide hole is provided at an eccentric position of the partition plate, and a second air guide hole is provided on the intermediate plate that can be aligned with the first air guide hole.

[0022] By adopting the above technical solution, when the transformer exhales and inhales, the second driving member drives the middle plate to rotate, so that the first air guide hole is aligned with the second air guide hole, connecting the first chamber and the second chamber to achieve gas flow; when the dehumidification and drying chamber is dehydrated and dried, the second driving member drives the middle plate to rotate, so that the first air guide hole and the second air guide hole are misaligned, and the other parts of the middle plate block the first air guide hole, separating the first chamber and the second chamber, and reducing the flow of water vapor to the transformer.

[0023] Optionally, an emitting sensor located at the first air guide hole is provided in the partition, a receiving sensor located at the second air guide hole is provided in the middle plate, and a control mechanism is provided on one side of the upper end portion, and the control mechanism is connected to the air supply mechanism, the emitting sensor, the receiving sensor, the exhaust mechanism and the heating mechanism.

[0024] By adopting the above technical solution, the first air guide hole is aligned with the second air guide hole, the transmitting sensor is aligned with the receiving sensor for sensing, the signal is transmitted to the control mechanism, and the control mechanism controls the air supply mechanism to start; when the first air guide hole is misaligned with the second air guide hole, the transmitting sensor is misaligned with the receiving sensor, and the dehumidification and drying chamber needs to be dehydrated and dried, the control mechanism controls the exhaust mechanism and the heating mechanism to start.

[0025] Optionally, the exhaust mechanism includes an exhaust pipe and an exhaust control valve arranged at the upper end, one end of the exhaust pipe is connected to the second chamber, and the exhaust control valve controls the on-off of the exhaust pipe; the breathing mechanism includes a breathing pipe and a breathing control valve arranged at the upper end, the breathing pipe is connected to the first chamber, and the breathing control valve controls the on-off of the breathing pipe, and the exhaust control valve and the breathing control valve are both connected to the control mechanism.

[0026] By adopting the above technical solution, the control mechanism controls the start or close of the exhaust control valve and the breathing control valve.

[0027] Optionally, the heating mechanism includes a heater and a heating switch provided at the bottom of the dehumidifying and drying chamber, and the heating switch is connected to the heater and the control mechanism.

[0028] By adopting the above technical solution, the control mechanism controls the heating switch to realize the start and stop of the heater. The heater can increase the temperature inside the condensation shell to realize dehydration and drying of the dehumidification drying chamber.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. The filter element is arranged in a cone shape. Under the action of the cleaning component, the surface of the filter element can be cleaned. The dust on the upper side of the filter element will gradually fall into the dust accumulation groove along the inclined surface, and the dust on the lower side of the filter element will be discharged from the inlet and outlet pipes during the exhalation of the transformer; in this way, the filter element is self-cleaned, and the frequency of stopping work for replacing or cleaning the filter element is reduced; at the same time, when the dehumidification and drying chamber is dehydrated and dried, the two-way non-return mechanism isolates the communication between the first chamber and the second chamber, the breathing air mechanism is closed, the exhaust mechanism and the heating mechanism are turned on, and the dehumidification and drying chamber will be dehydrated to produce water vapor after being heated. The water vapor will condense into water when it encounters the inner wall of the condensation shell and flow downward along the inner wall of the condensation shell. The water flows into the drainage channel at the lower end, passes through the dust accumulation groove and flushes the dust in the dust accumulation groove, and is finally discharged from the water outlet channel; in addition, part of the water vapor will enter the second chamber and be discharged from the exhaust mechanism, effectively reducing the situation where water vapor enters the transformer and causes damage to the transformer, realizing dehydration and drying of the dehumidification and drying chamber and impurity removal of the dust accumulation groove, and effectively reducing the frequency of shutdown for maintenance; 2. When the dehumidification and drying chamber is performing dehydration and drying, water flows into the water collection trough, and gravity drives the water collection block to slide toward the sedimentation trough. The first reset member is subjected to force to produce elastic deformation and maintain the tendency of elastic reset. After the force is reduced, the first reset member drives the water collection block to reset. When the first water outlet is aligned with one end of the drainage channel, water flows into the drainage channel, and the accumulated water volume increases the flow rate and flow rate of water into the drainage channel, ensuring the flushing effect of dust in the ash trough. When the dehumidification and drying chamber is performing dehydration and drying, the escaped water flows into the ash collection trough, which drives the ash collection block to move toward the inside of the movable trough. The second reset member is subjected to force to produce elastic deformation and maintain the tendency of elastic reset. After the force is reduced, the second reset member drives the ash collection block to reset. After the second water outlet is aligned with one end of the water outlet channel, water and dust are discharged, while reducing the situation where water splashes out of the ash collection trough and flows out of the ash trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic cross-sectional view of an embodiment of the present application; Figure 3 This is an enlarged schematic diagram of point A in an embodiment of the present application; Figure 4 This is an enlarged schematic diagram of point B in an embodiment of the present application; Figure 5 is a structural diagram of the lower end portion of an embodiment of the present application; Figure 6 is a schematic diagram of the interior of the lower end portion and the inlet and outlet air pipes of an embodiment of the present application; Figure 7 It is a schematic diagram of the decomposition of the filter element and cleaning assembly of an embodiment of the present application.

[0031] Explanation of reference numerals: 1. upper end portion; 11. first chamber; 12. second chamber; 2. condensation shell; 21. dehumidification and drying chamber; 3. lower end portion; 31. air inlet and outlet pipes; 311. dust trough; 3111. movable trough; 3112. sliding trough; 3113. stopper; 3114. connecting rope; 3115. third reset member; 312. water outlet channel; 32. drainage channel; 33. air supply mechanism; 34. sedimentation trough; 35. water collecting block; 351. water collecting trough; 352. first water outlet; 36. first reset member; 37. dust collecting block ; 371. Ash collecting trough; 372. Second water outlet; 38. Second reset member; 4. Two-way check mechanism; 41. Partition; 42. Middle plate; 43. Second driving member; 44. First air guide hole; 45. Second air guide hole; 5. Breathing air mechanism; 51. Breathing tube; 52. Breathing control valve; 6. Exhaust mechanism; 61. Exhaust pipe; 62. Exhaust control valve; 7. Heating mechanism; 8. Filter element; 81. Fixing ring; 82. Connecting ring; 83. Conical mesh surface; 9. Cleaning assembly; 91. Rotating shaft; 92. Bushing; 93. Cleaning rod. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 7 This application is described in further detail.

[0033] The embodiment of the present application discloses a self-cleaning intelligent maintenance-free desiccant.

[0034] Reference Figure 1 、 Figure 2 and Figure 3 A self-cleaning intelligent maintenance-free dehumidifying breather comprises an upper end portion 1, a condensing shell 2 and a lower end portion 3 arranged from top to bottom, the three being fixedly connected to each other by flanges. A dehumidifying and drying chamber 21 is provided inside the condensing shell 2, and the upper end portion 1 is provided with a secondary chamber connected to the dehumidifying and drying chamber 21. The secondary chamber comprises a first chamber 11, a second chamber 12 and a two-way check mechanism 4 for controlling the connection or isolation between the first chamber 11 and the second chamber 12. The first chamber 11 and the second chamber 12 are arranged in an upper and lower position. The secondary chamber is provided with a breathing air mechanism 5 connected to the first chamber 11 and an exhaust mechanism 6 connected to the second chamber 12. The dehumidifying and drying chamber 21 is a silica gel drying ring axially arranged inside the condensing shell 2. The gas enters the inner side from the outer side of the silica gel ring and then enters the second chamber 12 from the upper end opening of the condensing shell 2. The coordination between the various components of the maintenance-free dehumidifying breather in this application also involves line connection and sealing structure. Since these are conventional means or non-main technical solutions of this application, they are not reflected in the text and drawings of this application.

[0035] Reference Figure 1 、 Figure 2 and Figure 3A control mechanism is provided on one side of the upper end portion 1, and the control mechanism is a circuit control device such as a control box and a processor provided in the control box. The breathing mechanism 5 includes a breathing tube 51 and a breathing control valve 52 provided at the upper end portion 1. The breathing tube 51 is connected to the first chamber 11, and the breathing control valve 52 controls the on-off of the breathing tube 51. The exhaust mechanism 6 includes an exhaust pipe 61 and an exhaust control valve 62 provided at the upper end portion 1. One end of the exhaust pipe 61 is connected to the second chamber 12, and the exhaust control valve 62 controls the on-off of the exhaust pipe 61. A heating mechanism 7 is provided in the dehumidifying and drying chamber 21, and the heating mechanism 7 includes a heater and a heating switch provided at the bottom of the dehumidifying and drying chamber 21.

[0036] Reference Figure 1 、 Figure 2 and Figure 3 The lower end portion 3 is provided with an air inlet and outlet pipe 31 connected to the dehumidification and drying chamber 21. An air supply mechanism 33 and a filter element 8 covering the gas flow range are provided within the air inlet and outlet pipe 31. The filter element 8 is tapered, with its radius gradually decreasing toward the dehumidification and drying chamber 21. A dust accumulation groove 311 is defined in the wall of the air inlet and outlet pipe 31, corresponding to the edge of the filter element 8. The air supply mechanism 33 is provided with a cleaning assembly 9 for cleaning the opposing sides of the filter element 8. A drainage channel 32 connected to the dust accumulation groove 311 is defined on the upper end surface of the lower end portion 3. A water outlet channel 312 connected to the dust accumulation groove 311 is defined in the wall of the air inlet and outlet pipe 31.

[0037] Reference Figure 3 、 Figure 4 and Figure 5 The air supply mechanism 33 includes a housing, a fan and motor disposed therein, and a necessary heat sink for dissipating heat from the power supply. The control mechanism is connected to the corresponding power supply and electrical signal control components in the breathing mechanism 5, air supply mechanism 33, exhaust mechanism 6, and heating mechanism 7, such as the exhaust control valve 62, breathing control valve 52, motor, and heat sink.

[0038] Reference Figure 6 、 Figure 7 The filter element 8 includes a fixing ring 81 fixedly arranged on the circumferential pipe wall of the inlet and outlet air pipes 31, a connecting ring 82 axially arranged on the inner side of the fixing ring 81, and a conical mesh surface 83 fixedly connected to the circumferential inner wall of the fixing ring 81 and the circumferential inner wall of the connecting ring 82. The conical mesh surface 83 is made of corrosion-resistant metal.

[0039] Reference Figure 6 、 Figure 7The cleaning assembly 9 includes a rotating shaft 91 axially rotatably connected to the connecting ring 82 via a bearing, two bushings 92 axially fixedly connected to the rotating shaft 91 via bearings, and a cleaning rod 93 circumferentially and obliquely fixedly connected to the bushings 92. The cleaning rod 93 contacts the side surfaces of the corresponding conical mesh surface 83, and bristles are provided at the contact points between the cleaning rod 93 and the conical mesh surface 83. The two bushings 92 are symmetrically arranged on either side of the connecting ring 82. The air supply mechanism 33 is provided with a first drive element that drives the rotating shaft 91 to rotate. The first drive element is a motor integrated into the housing of the air supply mechanism 33, and a heat dissipation device can also dissipate the necessary heat.

[0040] Reference Figure 6 、 Figure 7 A sedimentation trough 34 is provided on the upper end surface of the lower end portion 3, one end of the drainage channel 32 penetrates the wall of the sedimentation trough 34, and a water collecting block 35 with a water collecting trough 351 is slidably connected in the sedimentation trough 34. A first reset member 36 is provided in the sedimentation trough 34 to drive the water collecting block 35 to reset and slide. The first reset member 36 is a spring and one end is fixedly connected to the lower end of the water collecting block 35 and the other end is fixedly connected to the bottom of the sedimentation trough 34. A first water outlet 352 corresponding to one end of the drainage channel 32 is penetrated through the wall of the water collecting trough 351.

[0041] Reference Figure 6 、 Figure 7 The lower wall of the ash trough 311 is provided with a movable groove 3111 and an ash collecting block 37 that is slidably connected to the movable groove 3111. The upper end of the ash collecting block 37 is provided with an ash collecting groove 371. One end of the drainage channel 32 penetrates the upper wall of the ash trough 311 and corresponds to the notch of the ash collecting trough 371. One end of the water outlet channel 312 penetrates the wall of the movable groove 3111. A second return member 38 is provided in the movable groove 3111 to drive the ash collecting block 37 to return to its original position and slide. The second return member 38 is a spring with one end fixedly connected to the lower end of the ash collecting block 37 and the other end fixedly connected to the bottom of the movable groove 3111. A second water outlet hole 372 is formed through the wall of the ash collecting trough 371, corresponding to one end of the water outlet channel 312.

[0042] Reference Figure 6 、 Figure 7 The wall of the ash trough 311 is provided with a sliding groove 3112, into which a stopper 3113 is slidably connected. The stopper 3113 and the ash collecting block 37 are linked by a connecting rope 3114, which is threaded through the wall of the air inlet and outlet pipes 31. The stopper 3113 can open and close the notch of the ash trough 311. A third return member 3115 is provided within the sliding groove 3112 to drive the stopper 3113 to return to its original position. The third return member 3115 is a spring with one end fixedly connected to the stopper 3113 and the other end fixedly connected to the bottom of the sliding groove 3112.

[0043] Reference Figure 2 、 Figure 3 The bidirectional check mechanism 4 includes a partition 41 disposed between the first chamber 11 and the second chamber 12, an intermediate plate 42 axially rotatably disposed within the partition 41, and a second drive member 43 disposed on the outer wall of the secondary chamber and used to drive the intermediate plate 42 to rotate. The upper inner wall of the first chamber 11 is connected to the upper end surface of the partition 41 via a hollow connecting pipe. A connecting shaft is passed through the connecting pipe. One end of the connecting shaft is axially fixedly connected to the intermediate plate 42 and the other end is connected to the second drive member 43. The second drive member 43 is connected to one end of the connecting shaft via a coupling. A first air guide hole 44 is formed at an eccentric point on the partition 41, and a second air guide hole 45 is formed on the intermediate plate 42, which can be aligned with the first air guide hole 44. The second drive member 43 is a rotary cylinder disposed on the outer wall of the secondary chamber. By setting two fixed rotational positions, the first air guide hole 44 and the second air guide hole 45 can be aligned or completely misaligned.

[0044] Reference Figure 2 、 Figure 3 A transmitting sensor located at the first air guide hole 44 is provided in the partition 41, and a receiving sensor located at the second air guide hole 45 is provided in the middle plate 42. The control mechanism is connected to the transmitting sensor and the receiving sensor.

[0045] The implementation principle of the self-cleaning intelligent maintenance-free dehumidifier in the embodiment of the present application is as follows: When the transformer inhales air, the breathing air mechanism 5 opens, the exhaust mechanism 6 and the heating mechanism 7 close, the two-way non-return mechanism 4 connects the first chamber 11 and the second chamber 12, and the air supply mechanism 33 introduces air from the inlet and outlet pipes 31 into the dehumidification drying chamber 21. The dehumidified dry air enters the second chamber 12 of the secondary chamber, and then enters the transformer through the two-way non-return mechanism 4, the first chamber 11 and the breathing air mechanism 5.

[0046] When the transformer exhales, the breathing air mechanism 5 is opened, the exhaust mechanism 6 and the heating mechanism 7 are closed, and the two-way non-return mechanism 4 connects the first chamber 11 and the second chamber 12. The gas enters the first chamber 11 of the secondary chamber through the breathing air mechanism 5, and then passes through the two-way non-return mechanism 4 and the second chamber 12, and finally enters the dehumidification and drying chamber 21. The air supply mechanism 33 then discharges the dehumidified and dried gas from the dehumidification and drying chamber 21 through the inlet and outlet pipes 31, thereby achieving the effect of dehumidification and drying of the maintenance-free dehumidifying breather during both the inhalation and exhalation processes of the transformer.

[0047] The filter element 8 is tapered, and the cleaning assembly 9 cleans the surface of the filter element 8. Dust on the upper side of the filter element 8 gradually falls into the dust accumulation trough 311 along the inclined surface, while dust on the lower side of the filter element 8 is discharged through the inlet and outlet pipes 31 during the transformer's exhalation process. This achieves self-cleaning of the filter element 8, reducing the frequency of stopping the machine for replacement or cleaning of the filter element 8.

[0048] At the same time, when dehumidifying and drying chamber 21 is being dehydrated and dried, bidirectional check mechanism 4 blocks the connection between first chamber 11 and second chamber 12, breathing mechanism 5 is closed, exhaust mechanism 6 and heating mechanism 7 are opened, and dehumidifying and drying chamber 21, after being heated, dehydrates and produces water vapor. When the water vapor encounters the inner wall of condensation shell 2, it condenses into water and flows downward along the inner wall of condensation shell 2, flowing into drainage channel 32 of lower end portion 3. The water passes through ash trough 311 and flushes the dust in ash trough 311, and finally is discharged from water outlet channel 312. In addition, some water vapor enters second chamber 12 and is discharged from exhaust mechanism 6, effectively reducing the possibility of water vapor entering the transformer and causing damage to the transformer, achieving dehydration and drying of dehumidifying and drying chamber 21 and impurity removal of ash trough 311, and effectively reducing the frequency of stopping operation to replace or clean filter element 8.

[0049] The first air guide hole 44 is aligned with the second air guide hole 45, the transmitting sensor is aligned with the receiving sensor for sensing, the signal is transmitted to the control mechanism, and the control mechanism controls the air supply mechanism 33 to start; when the first air guide hole 44 is misaligned with the second air guide hole 45, the transmitting sensor is misaligned with the receiving sensor, and the dehumidification and drying chamber 21 is required for dehydration and drying, the control mechanism controls the exhaust mechanism 6 and the heating mechanism 7 to start.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A self-cleaning intelligent maintenance-free desiccant, characterized by: The invention comprises an upper end portion (1), a lower end portion (3) and a condensation shell (2) arranged between the upper end portion (1) and the lower end portion (3); a dehumidification drying chamber (21) is arranged in the condensation shell (2); the upper end portion (1) is provided with a secondary chamber connected to the dehumidification drying chamber (21); the secondary chamber comprises a first chamber (11), a second chamber (12) and a two-way check mechanism (4) for controlling the connection or isolation between the first chamber (11) and the second chamber (12); the secondary chamber is provided with a breathing mechanism (5) connected to the first chamber (11) and an exhaust mechanism (6) connected to the second chamber (12); a heating mechanism (7) is arranged in the dehumidification drying chamber (21); the lower end portion (3) is provided with An air inlet and outlet pipe (31) is connected to the dehumidification and drying chamber (21), and an air supply mechanism (33) and a filter element (8) covering the gas flow range are provided in the air inlet and outlet pipe (31), and the filter element (8) is arranged in a conical shape and its radius gradually decreases toward the dehumidification and drying chamber (21). The pipe wall of the air inlet and outlet pipe (31) is provided with a dust accumulation groove (311) corresponding to the edge of the filter element (8), and the air supply mechanism (33) is provided with a cleaning component (9) for cleaning the two opposite sides of the filter element (8). The upper end surface of the lower end portion (3) is provided with a drainage channel (32) connected to the dust accumulation groove (311), and the pipe wall of the air inlet and outlet pipe (31) is provided with a water outlet channel (312) connected to the dust accumulation groove (311).

2. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 1, characterized in that: The filter element (8) comprises a fixing ring (81) fixedly arranged on the circumferential pipe wall of the air inlet and outlet pipes (31), a connecting ring (82) axially arranged on the inner side of the fixing ring (81), and a conical mesh surface (83) arranged between the fixing ring (81) and the connecting ring (82).

3. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 2, characterized in that: The cleaning assembly (9) includes a rotating shaft (91) axially connected to the connecting ring (82), two shaft sleeves (92) axially fixedly arranged on the rotating shaft (91), and a cleaning rod (93) circumferentially inclined on the shaft sleeve (92), wherein the cleaning rod (93) contacts the side surface of the corresponding conical mesh surface (83), and the two shaft sleeves (92) are symmetrically arranged on both sides of the connecting ring (82). The air supply mechanism (33) is provided with a first driving member for driving the rotating shaft (91) to rotate.

4. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 1, characterized in that: A sedimentation trough (34) is provided on the upper end surface of the lower end portion (3), one end of the drainage channel (32) penetrates the trough wall of the sedimentation trough (34), a water collecting block (35) having a water collecting trough (351) is slidably provided in the sedimentation trough (34), a first reset member (36) for driving the water collecting block (35) to reset and slide is provided in the sedimentation trough (34), and a first water outlet hole (352) corresponding to one end of the drainage channel (32) is penetrated and opened in the trough wall of the water collecting trough (351).

5. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 1 is characterized in that: The lower end groove wall of the ash accumulation groove (311) is provided with a movable groove (3111) and an ash collecting block (37) slidably provided in the movable groove (3111); the ash collecting block (37) is provided with an ash collecting groove (371); one end of the drainage channel (32) passes through the upper end groove wall of the ash accumulation groove (311) and corresponds to the notch of the ash collecting groove (371); one end of the water outlet channel (312) passes through the groove wall of the movable groove (3111); a second reset member (38) for driving the ash collecting block (37) to reset and slide is provided in the movable groove (3111); the groove wall of the ash collecting groove (371) is penetrated by a second water outlet hole (372) corresponding to one end of the water outlet channel (312).

6. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 5, characterized in that: The groove wall of the ash accumulation groove (311) is provided with a sliding groove (3112), and a stopper (3113) is slidingly provided in the sliding groove (3112). The stopper (3113) and the ash collecting block (37) are linked via a connecting rope (3114). The stopper (3113) can open and close the notch of the ash accumulation groove (311), and a third reset member (3115) is provided in the sliding groove (3112) for driving the stopper (3113) to reset and slide.

7. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 1, characterized in that: The two-way non-return mechanism (4) comprises a partition (41) arranged between the first chamber (11) and the second chamber (12), an intermediate plate (42) axially rotatably arranged in the partition (41), and a second driving member (43) arranged on the outer wall of the secondary chamber and used to drive the intermediate plate (42) to rotate. A first air guide hole (44) is provided at an eccentric position of the partition (41), and a second air guide hole (45) is provided on the intermediate plate (42) that can be aligned with the first air guide hole (44).

8. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 7, characterized in that: The partition (41) is provided with an emitting sensor located at the first air guide hole (44), the intermediate plate (42) is provided with a receiving sensor located at the second air guide hole (45), and a control mechanism is provided on one side of the upper end portion (1), and the control mechanism is connected to the air supply mechanism (33), the emitting sensor, the receiving sensor, the exhaust mechanism (6) and the heating mechanism (7).

9. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 8, characterized in that: The exhaust mechanism (6) comprises an exhaust pipe (61) and an exhaust control valve (62) arranged at the upper end portion (1), one end of the exhaust pipe (61) is communicated with the second chamber (12), and the exhaust control valve (62) controls the on-off of the exhaust pipe (61); the breathing mechanism (5) comprises a breathing pipe (51) and a breathing control valve (52) arranged at the upper end portion (1), the breathing pipe (51) is communicated with the first chamber (11), and the breathing control valve (52) controls the on-off of the breathing pipe (51), and both the exhaust control valve (62) and the breathing control valve (52) are connected to the control mechanism.

10. The self-cleaning intelligent maintenance-free dehumidifying breather according to claim 8, characterized in that: The heating mechanism (7) includes a heater and a heating switch arranged at the bottom of the dehumidifying and drying chamber (21), and the heating switch is connected to the heater and the control mechanism.

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