Respirator for transformer and control method thereof

Abstract

The invention relates to a respirator for a transformer and a control method thereof.The respirator for the transformer comprises an outer barrel, an inner barrel and a breathing linkage pipe, an oil collecting assembly is arranged on the outer end face of a base plate of the outer barrel, and an oil collecting cup of the oil collecting assembly is communicated with a transition barrel only through an oil seal piece air channel at the bottom end of the transition barrel; the oil collecting cup is communicated with the outside through a first channel on the base plate, the inner barrel is arranged in the outer barrel and is divided into a plurality of filter cavities for containing filter materials by partition plates, the inner walls, opposite to the outer barrel, of the filter cavities are thickened inwards to form convex lenses, and one-way air passing channels are formed in the partition plates so that the adjacent filter cavities can be communicated in a one-way mode. The top end of a breathing channel of the breathing connecting pipe is communicated with the transformer, the bottom end is communicated with the transition cylinder, and the top end of the transition cylinder is communicated with the upstream filter cavity which is unidirectionally communicated. The technical problems that in the prior art, a respirator silica gel filter material is low in utilization rate and prone to being polluted by oil gas are solved, and the thickened inner wall of the filter cavity forms the convex lens so that the filter material in the filter cavity can be conveniently amplified during observation.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a transformer respirator and a control method thereof. Background Art

[0002] The power transformer is the most important equipment in the power grid and the core equipment in the substation. The respirator is the main organ for the transformer oil tank to breathe. The daily maintenance of the respirator is related to the cleanliness of the insulating oil inside the main transformer. The filter material in the transformer respirator is blue under normal conditions. During use, it is necessary to filter out moisture and impurities in the outside air. After a period of time, it will be saturated and light red. When the color changes to 2 / 3, it indicates that the adsorbent has been damp and needs to be replaced. This process requires regular inspections and manual replacement by operation and maintenance personnel. It is difficult for the human eye to distinguish the volume of the current saturated hygroscopic silica gel, and it is also difficult to replace it in time when the hygroscopic silica gel changes color by 2 / 3. Traditional respirators also need to disassemble and replace the silica gel, which is cumbersome. Not only that, most of the silica gel is still in a non-water-absorbed state, but it is not easy to separate, so it can only be replaced, resulting in a waste of discolored silica gel.

[0003] Traditional respirators have problems such as frequent replacement of discolored silicone, small working space, inconvenient maintenance, long maintenance time, inadequate sealing, and respirator blockage.

[0004] The silicone of traditional respirators will rupture due to saturation of absorbed water during transformer operation. The transformer oil in the transformer oil pillow will increase in temperature or operating conditions, and the exhaled gas will contain oil, which will cause the drying cylinder to be contaminated with oil and form sludge. In addition, the exhaled gas will form bubbles in the oil collecting cup after passing through the oil seal. The bursting of the bubbles will cause the oil to splash through the filter holes and enter the drying cylinder, which often causes the transformer respirator to be blocked. Respirator blockage may cause internal negative pressure or increased internal pressure. Severe negative pressure may cause a large amount of air to enter the main transformer body, causing the oil level to drop, resulting in gas protection activation and transformer tripping. Excessive internal pressure may cause the transformer pressure release device to activate, resulting in oil spraying from the transformer. Summary of the invention

[0005] In order to solve the technical problems in the prior art that the utilization rate of silicone filter materials of respirators is low, they are easily contaminated by oil and gas, and they are inconvenient to observe, the present application proposes a respirator for a transformer and a control method thereof, which solves the above technical problems.

[0006] The technical solution adopted by the present invention to solve its technical problem is: The present invention provides a respirator for a transformer, characterized in that it comprises: a transparent outer cylinder, the top of the outer cylinder is connected to the transformer, the bottom is provided with a chassis, the outer end surface of the chassis is provided with an oil collecting assembly, the oil collecting assembly comprises an oil collecting cup and a transition tube arranged in the oil collecting cup, the oil collecting cup and the transition tube are connected only through the oil sealing plate airway on the bottom end of the transition tube, and at the same time, the oil collecting cup is connected with the outside through a first channel on the chassis; a transparent inner cylinder, the inner cylinder is arranged in the outer cylinder, and a plurality of filter cavities for placing filter materials are separated by a partition plate, the inner wall of the filter cavity opposite to the outer cylinder is thickened inwardly to form a convex lens, and a one-way air passage is formed in the partition plate so that the adjacent filter The cavity is one-way connected; the breathing tube is arranged in the center of the inner cylinder, the top of the breathing channel of the breathing tube is connected with the transformer, the bottom end of the breathing channel is inserted into the top of the transition cylinder and connected with the transition cylinder, the top of the transition cylinder is also connected with the one-way connected filter cavity located upstream through a second channel on the chassis in part of the road section, and at the same time, the breathing tube is connected with the one-way connected filter cavity located downstream through a one-way air intake port opened on the side wall when passing through the inner cylinder, so that when the transformer inhales, the gas can only flow from the filter cavity to the breathing channel, and the bottom of the breathing tube is provided with a one-way exhalation port, so that when the transformer exhales, the gas can only flow from the breathing channel to the transition cylinder.

[0007] Furthermore, one-way air valves are arranged in the one-way air passage of the partition plate and at the one-way air inlet and the one-way air exhalation port of the breathing tube, and the one-way air valve comprises: an outer shell, the two ends of the outer shell are open, and a vertically extending flow channel is formed in the outer shell; a ball, the ball is restricted to move in the flow channel; a supporting member, the supporting member is arranged in the flow channel, and the supporting member is only provided with an air blocking hole for the ball to cooperate with after it descends, and the flow channel is closed after the air blocking hole cooperates with the ball; a blocking member, the blocking member is arranged in the flow channel and is located at the top of the supporting member, the blocking member blocks the rising ball, and a gap is still left in the flow channel after blocking the ball.

[0008] Furthermore, it also includes a feed channel and a discharge channel. The feed channel is arranged obliquely at the top of the outer cylinder and penetrates into the filter cavity of the inner cylinder, and the discharge channel is arranged at the bottom of the outer cylinder and penetrates into the filter cavity of the inner cylinder.

[0009] Furthermore, a lower baffle is arranged on the surface where the chassis of the outer cylinder cooperates with the oil collecting assembly, and the lower baffle is fixedly connected to the breathing tube through a central hole located at the center of the circle. A through hole corresponding to the size of the second channel is opened on the disk body of the lower baffle, and the through hole is formed as part of the second channel. At the same time, the first channel is also formed on the lower baffle.

[0010] Furthermore, the bottom of each filter cavity is formed as an inclined discharge surface with a folded angle seam, and the lowest point of the folded angle seam of the discharge surface is connected to the discharge channel through a through opening.

[0011] Furthermore, a plurality of air holes are formed on the discharge surface, and the air holes form part of the second channel.

[0012] Further, the inner cylinder is configured to be rotatable.

[0013] Furthermore, the inner cylinder is fixedly connected to the chassis of the outer cylinder.

[0014] Furthermore, the inlet of the one-way air passage in the partition plate is formed at the top of the partition plate, and the outlet of the one-way air passage is formed at the bottom of the partition plate.

[0015] Furthermore, the air holes on the discharge surface, and the openings of the inlet and outlet of the one-way air passage are all vertically downward.

[0016] Furthermore, the air holes on the discharge surface, and the inlet and outlet of the one-way air passage are all provided with cross-arranged regular tetrahedrons, and the regular tetrahedrons are open downwards.

[0017] Furthermore, an oil baffle plate is arranged on the inner wall of the oil collecting cup of the oil collecting assembly, and the oil baffle plate blocks the outlet of the air passage of the oil sealing plate on the bottom end of the transition tube in a top view.

[0018] Furthermore, the oil seal plate is provided with a plurality of semicircular grooves on the surface facing the outer cylinder body, the semicircular grooves extend radially, an air pipe which has been bent once is installed in the semicircular grooves, the air channel is formed in the air pipe, one end of the air channel opens vertically upward and is connected to the transition cylinder, and the other end of the air channel opens horizontally and is formed in the thickness portion of the end plate at the bottom end of the transition cylinder.

[0019] Furthermore, it also includes stripes embedded in the inner wall of the outer cylinder, and the stripes are arranged at a position relative to the partition plate.

[0020] Furthermore, a color sensor for detecting whether the filter material in the filter cavity is ineffective is configured at a position of the outer wall of the outer cylinder relative to the bottom of the arc surface of one of the filter cavities.

[0021] Furthermore, the inner cylinder has six filter chambers. When the transformer inhales gas, the gas enters from the first filter chamber located at the upstream end, passes through the connected second and third filter chambers in sequence, enters the breathing tube, and finally enters the transformer. At the same time, the color sensor is used to detect whether the filter material hygroscopic silica gel at the bottom of the third filter chamber changes color.

[0022] Another aspect of the present invention further provides a control method for a transformer respirator, which is controlled by the above-mentioned transformer respirator. The control method is that the color sensor of the transformer respirator performs color detection to check whether the filter material hygroscopic silica gel at the bottom of the filter chamber has changed color: if so, the color of the filter material hygroscopic silica gel has changed to light red, which means that the filter material hygroscopic silica gel needs to be replaced, and the color sensor sends an alarm signal to the host computer. The host computer controls the inner cylinder to rotate in sequence to switch the two filter chambers to face the color sensor again for color detection, and enters the next cycle to continue color detection; if not, the color of the filter material hygroscopic silica gel is still blue, and the information feedback is that the filter material hygroscopic silica gel is normal, and enters the next cycle to continue color detection.

[0023] Based on the above technical solution, the technical effects that can be achieved by the present invention are: The transformer respirator provided by the present invention has the following advantages: after the gas exhaled from the transformer enters from the top of the breathing tube, the gas does not pass through the filter cavity due to the one-way air inlet on the side wall of the breathing tube, but directly enters the transition tube of the oil collecting assembly from the bottom of the breathing tube, thereby preventing the oil and gas from contaminating the filter material. Then, the gas enters the oil collecting cup through the oil sealing plate airway on the bottom of the transition tube, and then is exhaled to the outside through the first channel on the chassis connected to the outside. When the transformer inhales air inwardly, the outside gas enters the oil collecting cup through the first channel on the chassis connected to the outside, enters the transition tube through the oil sealing plate airway on the bottom of the transition tube, and then passes through the top of the transition tube and the second channel on the chassis in turn into the one-way connected filter cavity located upstream for water absorption and filtration. The design of the filter chamber is that after entering the one-way connected filter chamber located upstream, the external gas can only pass through the downstream filter chamber one by one, and enter the breathing pipe through the filter chamber connected to the breathing pipe, and finally enter the transformer, thereby improving the utilization rate of the filter material and improving the filtering effect. In summary, the present invention solves the technical problems of low utilization rate and easy contamination of oil and gas in the respirator silica gel filter material in the prior art; at the same time, the inner wall of the filter chamber opposite to the outer cylinder is thickened inwardly to form a convex lens, and the filter material can be magnified when observed from the outside for easy observation; further, the arrangement of the airway of the oil seal plate makes the oil seal plate have not only small-caliber filter holes, but also large-caliber airways, which can allow oil bubbles to pass through, thereby avoiding the bubble bursting and clogging of the filter holes when the transformer exhales. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the transformer respirator of the present invention; Figure 2 This is a schematic diagram of the gas path when the transformer exhales gas; Figure 3 This is a schematic diagram of the gas path when the transformer absorbs gas; Figure 4 It is a schematic diagram of the inner cylinder of the present invention; Figure 5 It is a schematic diagram of the bottom of the inner cylinder of the present invention; Figure 6 A schematic diagram of a partition plate of an inner cylinder of the present invention; Figure 7 A cross-sectional view of a partition plate of an inner cylinder of the present invention; Figure 8 It is a schematic diagram of the breathing tube of the present invention; Fig. 9 It is a schematic diagram of the one-way gas valve of the present invention in two states; Fig.10 It is a schematic diagram of the lower baffle of the outer cylinder of the present invention; Fig.11 It is a cross-sectional schematic diagram of the lower baffle of the outer cylinder of the present invention; Fig.12 It is a schematic diagram of an embodiment of the inner cylinder of the present invention having six filter chambers; Fig.13 It is a schematic diagram of another embodiment of the present invention in which the inner cylinder body has six filter chambers; Fig.14 It is a schematic diagram of an embodiment of the present invention in which the inner cylinder body has four filter chambers; Fig.15 It is a schematic diagram of the airway of the oil seal sheet of the present invention; Fig.16 The present invention is a logic control diagram of the invented transformer respirator.

[0025] Among them: 1-outer cylinder, 11-chassis, 111-first channel, 112-second channel, 113-lower baffle, 1131-through hole, 1132-central hole, 114-handle, 115-filler, 116-support, 12-oil collecting assembly, 121-oil collecting cup, 1211-oil baffle, 122-transition cylinder, 1221-oil seal, 1222-airway, 13-flange, 14-stripes; 2-inner cylinder, 21-partition plate, 211-one-way air passage, 22-filter chamber, 221-discharging surface, 2211-air hole, 2212-through-hole, 23-tetrahedron; 3-breathing connecting pipe, 31-breathing channel, 32-one-way air inlet, 33-one-way air outlet, 34-through-core screw; 4-one-way air valve, 41-housing, 42-ball, 43-supporting member, 431-air blocking hole, 44-blocking member; 5-feeding channel, 51-discharging channel; 6-color sensor. DETAILED DESCRIPTION

[0026] like Figure 1-15As shown, the present invention provides a transformer respirator, comprising an outer cylinder 1, an inner cylinder 2 and a respirator joint 3. The top of the outer cylinder 1 is connected to the transformer through a flange 13, and a chassis 11 is arranged at the bottom. An oil collecting assembly 12 is arranged on the outer end surface of the chassis 11. The oil collecting assembly 12 comprises an oil collecting cup 121 and a transition cylinder 122 arranged in the oil collecting cup 121. The oil collecting cup 121 and the transition cylinder 122 are connected only through an oil sealing sheet 1221 and an air passage 1222 on the bottom end of the transition cylinder 122. At the same time, the oil collecting cup 121 The first channel 111 on the chassis 11 is connected to the outside, the inlet of the first channel 111 is at a position where the outer end surface of the chassis 11 is enveloped by the oil collecting cup 121, and the outlet of the first channel 111 is at a position where the outer end surface of the chassis 11 is not enveloped by the oil collecting cup 121 or at a side of the chassis 11 in the vertical direction. The inner cylinder 2 is arranged in the outer cylinder 1, and is divided into a plurality of filter chambers 22 for placing filter materials by a partition plate 21. A one-way air passage 211 is formed in the partition plate 21 to enable adjacent filter chambers 22 to be connected in one direction. The breathing joint pipe 3 is provided with The breathing tube 3 is placed in the center of the inner cylinder 2, and a through-core screw 34 is arranged at the center of the circle of the through-core screw 34. The breathing channel 31 is arranged on the periphery of the through-core screw 34. The top of the breathing channel 31 is connected to the transformer. The bottom end of the breathing channel 31 is inserted into the top of the transition tube 122 and connected to the transition tube 122. The top of the transition tube 122 is also connected to the filter chamber 22 located upstream of the one-way communication through the second channel 112 on the chassis 11. The inlet of the second channel 112 is at a position where the chassis 11 is enveloped by the transition tube 122. The passage is outside the bottom of the filter chamber 22, and the outlet of the second channel 112 is at the bottom of the filter chamber 22. At the same time, the breathing pipe 3 is connected with the one-way connected filter chamber 22 located downstream through a one-way air intake port 32 opened on the side wall when passing through the inner cylinder body 2. There are two one-way air intake ports 32 in this example, so that when the transformer inhales, the gas can only flow from the filter chamber 22 to the breathing channel 31. The bottom of the breathing pipe 3 is provided with a one-way exhalation port 33, so that when the transformer exhales, the gas can only flow from the breathing channel 31 to the transition cylinder 122.

[0027] For easy observation, the side walls of the outer cylinder 1 and the inner cylinder 2 are made of transparent materials. The material of the partition plate 21 can be stainless steel, galvanized steel, aluminum alloy, high manganese steel, polyurethane elastomer or hard alloy material. The material must have the characteristics of high strength and high wear resistance. The inner wall of the filter cavity 22 opposite to the outer cylinder 1 is thickened inwardly to form a convex lens. Specifically, the inner wall is thickened inwardly, such as Fig.10As shown, in a specific embodiment of the present invention, the inner cylinder 2 is divided into six filter chambers 22, and the inner surface of the inner cylinder 2 before being divided by the partition plate 21 is a regular hexahedron, so that the inner cylinder 2 forms a convex lens on the side wall of each filter chamber 22. When observed from the outside, the filter material can be magnified for easy observation. In order to further facilitate observation, stripes 14 are embedded in the inner wall of the outer cylinder 1. The stripes 14 are arranged at a position relative to the partition plate 21. Furthermore, stripes 14 are arranged at each vertex of the regular hexahedron on the outer side of the inner cylinder 2 to facilitate color comparison. The RGB color of the stripes 14 can be yellow from (210, 210, 0) to (255, 255, 0). Furthermore, a color sensor 6 for detecting whether the filter material in the filter chamber 22 is invalid is arranged on the outer wall of the outer cylinder 1 at the bottom position of the arc surface of one of the filter chambers 22. The color sensor 6 can use Wi-Fi, Bluetooth, cellular mobile communication or ultra-wideband technology to wirelessly transmit alarm signals, and transmit the signals to the host computer to control the rotation of the inner cylinder 2. As shown Fig.11 As shown, in another specific embodiment of the present invention, the inner cylinder 2 is divided into six filter chambers 22, and the inner wall surface of the filter chamber 22 is convex inward to form a convex lens with a shorter focal length to increase the magnification and facilitate observation. Fig.12 As shown, in another specific embodiment of the present invention, the inner cylinder 2 is divided into four filter chambers 22. Compared with the six filter chambers 22, the convex lens formed by the side wall of each filter chamber 22 has a shorter focal length and a larger magnification. At the same time, the number of partition plates 21 is saved and the preparation cost is low, but the utilization rate of the hygroscopic silica gel is slightly reduced.

[0028] In a specific embodiment of the present invention, a one-way air valve 4 is arranged in the one-way air passage 211 of the partition plate 21, and in the one-way air inlet 32 ​​and the one-way air exhalation outlet 33 of the breathing tube 3 to realize the one-way flow of gas. The one-way air valve 4 includes a shell 41, a ball 42, a supporting member 43 and a blocking member 44. Both ends of the shell 41 are open, and a vertically extending flow channel is formed in the shell 41. The ball 42 is restricted to move in the flow channel. The supporting member 43 is arranged in the flow channel, and only an air blocking hole 431 is provided on the supporting member 43 for the ball 42 to engage after it descends. After the air blocking hole 431 engages with the ball 42, the flow channel is closed. The blocking member 44 is U-shaped, arranged in the flow channel and located at the top of the supporting member 43. The blocking member 44 blocks the rising ball 42, and a gap is still left in the flow channel after blocking the ball 42. Specifically, when the gas flows from the supporting member 43 to the blocking member 44, the ball 42 is pushed back and fits on the blocking member 44, and the gas passes through the air blocking hole 431 and can flow in the flow channel of the outer shell 41. Conversely, when the gas flows from the blocking member 44 to the supporting member 43, the ball 42 is pushed back and fits on the supporting member 43, blocking the air blocking hole 431. The gas cannot pass through the air blocking hole 431 and cannot flow in the flow channel of the outer shell 41.

[0029] It should be noted that when the transformer exhales outwards, after the gas enters the transition tube 122, although it seems that it can go out through the second channel 112 and the airway 1222 of the oil seal 1221 on the bottom end of the transition tube 122 at the same time, in fact, the ball 42 of the one-way air valve 4 in the one-way air passage 211 of the partition plate 21 will be pushed by the gas just exhaled from the transformer and block the air blocking hole 431. The gas after entering the transition tube 122 obviously pushes the ball 42, that is, the force that pushes the ball 42 out of the air blocking hole 431 is obviously smaller than the force that pushes the ball 42 toward the air blocking hole 431. Therefore, in the process of the transformer exhaling outwards, the air pressure in the filter chamber 22 is high, and the gas after entering the transition tube 122 is not easy to enter the filter chamber 22 through the second channel 112, but flows out from the airway 1222 of the oil seal 1221 on the bottom end of the transition tube 122.

[0030] In order to facilitate material replacement, a feed channel 5 and a discharge channel 51 are also included. The feed channel 5 is tiltedly arranged at the top of the outer cylinder 1 and penetrates into the filter chamber 22 of the inner cylinder 2. The discharge channel 51 is arranged at the bottom of the outer cylinder 1 and penetrates into the filter chamber 22 of the inner cylinder 2. The mouth of the feed channel 5 and the discharge channel 51 exposed at the outer cylinder 1 is sealed by bolts with sealing members. In a specific embodiment of the present invention, the feed channel 5 and the discharge channel 51 are arranged on the same vertical line, and each filter chamber 22 is configured with a pair of feed channels 5 and discharge channels 51. In another specific embodiment of the present invention, the feed channel 5 and the discharge channel 51 are arranged on the same vertical line, and the entire inner cylinder 2 is configured with a pair, and the inner cylinder 2 is configured to be rotatable, and different filter chambers 22 are rotated to the feed channel 5 and the discharge channel 51 for material replacement. The transformer respirator of the present invention replaces the material through the feed channel 5 and the discharge channel 51, replacing the previous method of complete disassembly, and solves the technical problems of narrow working space, inconvenient maintenance, long maintenance operation time and inadequate sealing in the previous replacement operation.

[0031] In a specific embodiment of the present invention, a lower baffle 113 is arranged on the surface where the chassis 11 of the outer cylinder 1 cooperates with the oil collecting assembly 12. The lower baffle 113 is fixedly connected to the breathing tube 3 through a central hole 1132 located at the center of the circle. A through hole 1131 corresponding to the size of the second channel 112 is opened on the disk of the lower baffle 113. The through hole 1131 is formed as a part of the second channel 112 to ensure that when the transformer inhales air inward, the gas only enters one filter chamber 22. At the same time, the first channel 111 is also formed on the lower baffle 113. There are multiple first channels 111. The openings at both ends of the first channel 111 are arranged downward, one opening is connected to the outside, and the other opening is connected to the transition cylinder 122. The middle section of the first channel 111 extends radially along the lower baffle 113.

[0032] In a specific embodiment of the present invention, the bottom of each filter cavity 22 is formed as an inclined discharge surface 221 with a folded corner seam, and the lowest point of the folded corner seam of the discharge surface 221 is connected to the discharge channel 51 through the through hole 2212. Furthermore, the bottom has two surfaces, and the lowest point of the joint of the two surfaces is connected to the discharge channel 51.

[0033] In a specific embodiment of the present invention, a plurality of air holes 2211 are formed on the discharge surface 221 , and the air holes 2211 are formed as part of the second channel 112 .

[0034] In the present invention, the inner cylinder 2 is configured to be rotatable. The inner cylinder 2 can be driven by configuring a rack at the bottom of the inner cylinder 2, and the rack cooperates with the output gear of the motor to drive the inner cylinder 2 to rotate.

[0035] In a specific embodiment of the present invention, a handle 114 is arranged on the vertical side of the chassis 11 of the outer cylinder 1, and the chassis 11 of the outer cylinder 1 is fixedly connected to the inner cylinder 2, and the inner cylinder 2 is driven to rotate by pushing the handle 114. Further, a filling member 115 fixedly connected to the chassis 11 is arranged on the inner end surface of the chassis 11 of the outer cylinder 1, and the filling member 115 is an annular body, and the annular body protrudes toward the surface of the inner cylinder 2 to fill between the chassis 11 and the inner cylinder, and a support member 116 is arranged between the filling member 115 and the bottom of the filter chamber 22 to form a part of the second channel 112.

[0036] In a specific embodiment of the present invention, the inlet of the one-way air passage 211 in the partition plate 21 is formed at the top of the partition plate 21, and the outlet of the one-way air passage 211 is formed at the bottom of the partition plate 21. Specifically, the gas coming from the second channel 112 first enters the first filter chamber 22 upstream through the bottom of the filter chamber 22, flows from the bottom to the top of the first filter chamber 22, and then enters the one-way air passage 211 from the inlet of the one-way air passage 211 at the top of the partition plate 21, flows from the top to the bottom of the one-way air passage 211, and then enters the bottom of the adjacent second filter chamber 22 from the outlet of the one-way air passage 211 at the bottom of the partition plate 21, and so on, until entering the filter chamber 22 connected to the breathing joint pipe 3, flowing back into the breathing joint pipe 3 through the one-way air inlet 32 ​​and finally returning to the transformer.

[0037] In order to prevent the silica gel filter material from clogging the outlet, the air holes 2211 on the discharge surface 221 and the opening parts of the inlet and outlet of the one-way air passage 211 are all vertically downward. Specifically, the air holes 2211 on the discharge surface 221 and the inlet and outlet of the one-way air passage 211 are all configured with cross-arranged regular tetrahedron members 23, and the regular tetrahedron members 23 are opened downward.

[0038] An oil baffle 1211 is arranged on the inner wall of the oil collecting cup 121 of the oil collecting assembly 12. The oil baffle 1211 blocks the outlet of the airway 1222 of the oil seal plate 1221 on the bottom end of the transition tube 122 in a top view, thereby preventing bubbles in the oil collecting cup 121 from bursting and blocking the second channel 112 when the transformer exhales.

[0039] In a specific embodiment of the present invention, a plurality of semicircular grooves are provided on the surface of the oil seal sheet 1221 facing the outer cylinder 1, and the semicircular grooves extend radially. A trachea that has been bent once is installed in the semicircular grooves, and an airway 1222 is formed in the trachea. One end of the airway 1222 opens vertically upward to communicate with the transition cylinder 122, and the other end of the airway 1222 opens horizontally in the thickness portion of the end plate at the bottom end of the transition cylinder 122. Furthermore, the other end of the horizontal opening of the airway 1222 can also protrude from the thickness portion of the end plate at the bottom end of the transition cylinder 122 in the horizontal direction, and extend the bottom contour of the transition cylinder 122 in the radial direction, so as to be better shielded by the oil baffle 1211. The extended airway 1222 of the oil seal sheet 1221 can further prevent the bubbles from bursting and blocking the second channel 112 when the transformer exhales, and can also reduce the material used for the oil seal sheet 1221, but the preparation process is slightly improved.

[0040] In a specific embodiment of the present invention, the inner cylinder 2 has six filter chambers 22, three for use and three for backup. When the transformer inhales gas, the gas enters from the first filter chamber 22 located at the most upstream, passes through the connected second and third filter chambers 22 in sequence, enters the breathing pipe 3, and finally enters the transformer. At the same time, the color sensor 6 is used to detect whether the filter material hygroscopic silica gel at the bottom of the third filter chamber 22 changes color; the partition plate 21 with a one-way flow function is used to divide the inner cylinder 2 into six (or four or more) filter chambers 22 in order to isolate the filter material hygroscopic silica gel in sections. When 2 / 3 of the filter material hygroscopic silica gel in the entire cavity of the device changes color from bottom to top and becomes ineffective, it needs to be completely replaced (not replaced after all are used up, because if the replacement is not timely, water vapor will enter), resulting in waste of filter material hygroscopic silica gel. The present invention uses only three separated filter cavities 22 at the same time to separate the filter material hygroscopic silica gel. When the filter material hygroscopic silica gel in the front two filter cavities 22 completely changes color, the filter material hygroscopic silica gel at the bottom of the third filter cavity 22 begins to change color. After being detected by the color sensor 6, the inner cylinder 2 is rotated to switch the third filter cavity 22 originally connected to the breathing tube 3 to the second channel 1. 12, the first filter chamber 22 connected to the first filter chamber 22 is used, the spare filter chambers 22 originally located in the fourth and fifth filter chambers 22 are put into use, and the ineffective filter material hygroscopic silica gel in the original first and second filter chambers 22 is replaced, thereby saving 1 / 3 of the filter material hygroscopic silica gel that is not used in the traditional mode; during the process, the inhaled gas first enters from the bottom of the first filter chamber 22, and the gas passes through the chamber of the first filter chamber 22 from the bottom of the first filter chamber 22 to the top of the first filter chamber 22, and then enters from the upper air hole of the first filter chamber 22 to the one-way air passage 211 of the partition plate 21, specifically from the one-way air passage 211. The gas enters through the inlet of the air channel 211 located at the top of the partition plate 21, and then flows out from the outlet of the one-way air channel 211 located at the bottom of the partition plate 21 to enter the bottom of the chamber of the second filter chamber 22. The gas passes through the chamber of the second filter chamber 22 from the bottom of the second filter chamber 22 to the top of the second filter chamber 22, and then enters the one-way air channel 211 of the partition plate 21 again. By analogy, after the gas enters the third filter chamber 22, it will enter the breathing pipe 3 through the one-way air intake port 32 connected to the third filter chamber 22, and then enter the transformer through the breathing pipe 3.

[0041] In a specific embodiment of the present invention, Fig.16As shown, the logic control method of the transformer respirator of the present invention is as follows: when the working mode is turned on, the color sensor 6 performs color detection to check whether the filter material hygroscopic silica gel in the filter cavity 22 changes color. If so, the color has changed to light red, which means that the hygroscopic silica gel needs to be replaced. The color sensor 6 sends an alarm signal to the host computer, and the host computer controls the inner cylinder 2 to rotate in sequence to switch the two filter cavities 22 to face the color sensor 6 again for color detection, and then enters the next cycle to continue color detection; in the stage of checking whether the filter material hygroscopic silica gel in the filter cavity 22 changes color, if not, the color is still blue, and the information feedback is that the hygroscopic silica gel is normal, and enters the next cycle to continue color detection.

[0042] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A transformer respirator, characterized in that: include: A transparent outer cylinder (1), wherein the top of the outer cylinder (1) is connected to the transformer, and the bottom is provided with a chassis (11); an oil collecting assembly (12) is provided on the outer end surface of the chassis (11); the oil collecting assembly (12) comprises an oil collecting cup (121) and a transition cylinder (122) arranged in the oil collecting cup (121); the oil collecting cup (121) and the transition cylinder (122) are connected only through an air passage (1222) of an oil sealing sheet (1221) on the bottom end of the transition cylinder (122); and the oil collecting cup (121) is connected to the outside through a first passage (111) on the chassis (11); A transparent inner cylinder (2), the inner cylinder (2) being arranged inside the outer cylinder (1) and being divided by a partition plate (21) into a plurality of filter cavities (22) for placing filter materials, the inner wall of the filter cavity (22) opposite to the outer cylinder (1) being thickened inwardly to form a convex lens, and a one-way air passage (211) being formed inside the partition plate (21) to enable one-way communication between adjacent filter cavities (22); A breathing tube (3), the breathing tube (3) being arranged at the center of the inner cylinder (2), the top end of the breathing channel (31) of the breathing tube (3) being connected to the transformer, the bottom end of the breathing channel (31) being inserted into the top end of the transition cylinder (122) and being connected to the transition cylinder (122), the top end of the transition cylinder (122) also being connected to the filter chamber (22) located upstream and being unidirectionally connected through a second channel (112) on the chassis (11) in part. At the same time, when passing through the inner cylinder (2), the breathing connection pipe (3) is connected to the filter chamber (22) located downstream and connected in one way through a one-way air inlet (32) provided on the side wall, so that when the transformer inhales, gas can only flow from the filter chamber (22) to the breathing passage (31); and a one-way exhalation port (33) is provided at the bottom of the breathing connection pipe (3), so that when the transformer exhales, gas can only flow from the breathing passage (31) to the transition cylinder (122).

2. The transformer respirator according to claim 1, characterized in that: One-way air valves (4) are arranged in the one-way air passage (211) of the partition plate (21) and at the one-way air inlet (32) and the one-way air exhalation outlet (33) of the breathing tube (3). The one-way air valves (4) include: A shell (41), wherein both ends of the shell (41) are open, and a flow channel extending vertically is formed in the shell (41); A ball (42), wherein the ball (42) is restricted to move within the flow channel; A supporting member (43), the supporting member (43) being arranged in the flow channel, the supporting member (43) being provided with only an air blocking hole (431) for the ball (42) to engage with after it descends, and the flow channel being closed after the air blocking hole (431) engages with the ball (42); A blocking member (44) is arranged in the flow channel and is located on the top of the supporting member (43). The blocking member (44) blocks the rising ball (42) and still leaves a gap in the flow channel after blocking the ball (42).

3. The transformer respirator according to claim 2, characterized in that: It also comprises a feed channel (5) and a discharge channel (51), wherein the feed channel (5) is arranged at an angle at the top of the outer cylinder (1) and penetrates into the filter cavity (22) of the inner cylinder (2), and the discharge channel (51) is arranged at the bottom of the outer cylinder (1) and penetrates into the filter cavity (22) of the inner cylinder (2).

4. The transformer respirator according to claim 3, characterized in that: A lower baffle (113) is arranged on the surface of the bottom plate (11) of the outer cylinder (1) that cooperates with the oil collecting assembly (12); the lower baffle (113) is fixedly connected to the breathing tube (3) via a central hole (1132) located at the center of the circle; a through hole (1131) corresponding to the size of the second channel (112) is formed on the plate body of the lower baffle (113); the through hole (1131) is formed as part of the second channel (112); and the first channel (111) is also formed on the lower baffle (113).

5. The transformer respirator according to claim 4, characterized in that: The bottom of each filter cavity (22) is formed into an inclined discharge surface (221) with a folded angle seam, and the lowest point of the folded angle seam of the discharge surface (221) is connected to the discharge channel (51) through a through opening (2212).

6. The transformer respirator according to claim 5, characterized in that: A plurality of air holes (2211) are provided on the discharge surface (221), and the air holes (2211) form part of the second channel (112).

7. The transformer respirator according to claim 6, characterized in that: The inner cylinder (2) is configured to be rotatable.

8. The transformer respirator according to claim 7, characterized in that: The inner cylinder (2) is fixedly connected to the bottom plate (11) of the outer cylinder (1).

9. The transformer respirator according to claim 8, characterized in that: The inlet of the one-way air passage (211) in the partition plate (21) is formed at the top of the partition plate (21), and the outlet of the one-way air passage (211) is formed at the bottom of the partition plate (21).

10. The transformer respirator according to claim 9, characterized in that: The air holes (2211) on the discharge surface (221), as well as the openings of the inlet and outlet of the one-way air passage (211) are all vertically downward.

11. The transformer respirator according to claim 10, characterized in that: The air holes (2211) on the discharge surface (221), as well as the inlet and outlet of the one-way air passage (211), are all provided with cross-arranged regular tetrahedrons (23), and the regular tetrahedrons (23) are open downward.

12. The transformer respirator according to claim 11, characterized in that: An oil baffle plate (1211) is arranged on the inner wall of the oil collecting cup (121) of the oil collecting assembly (12), and the oil baffle plate (1211) blocks the outlet of the air passage (1222) of the oil sealing plate (1221) on the bottom end of the transition tube (122) in a top view.

13. The transformer respirator according to claim 12, characterized in that: The oil seal plate (1221) is provided with a plurality of semicircular grooves on the surface facing the outer cylinder (1), the semicircular grooves extending in the radial direction, an air pipe which has been bent once is installed in the semicircular groove, the air channel (1222) is formed in the air pipe, one end of the air channel (1222) opens vertically upward to communicate with the transition cylinder (122), and the other end of the air channel (1222) opens horizontally to be formed in the thickness portion of the end plate at the bottom end of the transition cylinder (122).

14. The transformer respirator according to claim 13, characterized in that: It also includes stripes (14) embedded in the inner wall of the outer cylinder (1), and the stripes (14) are arranged at a position relative to the partition plate (21).

15. The transformer respirator according to claim 14, characterized in that: A color sensor (6) for detecting whether the filter material in the filter cavity (22) is ineffective is arranged at the bottom of the arc surface of the outer wall of the outer cylinder (1) relative to one of the filter cavities (22).

16. The transformer respirator according to claim 15, characterized in that: The inner cylinder (2) has six filter chambers (22). When the transformer inhales gas, the gas enters from the first filter chamber (22) located at the most upstream, passes through the connected second and third filter chambers (22) in sequence, enters the breathing tube (3), and finally enters the transformer. At the same time, the color sensor (6) is used to detect whether the filter material hygroscopic silica gel at the bottom of the third filter chamber (22) changes color.

17. A control method for a transformer respirator, characterized in that: The transformer respirator according to claim 16 is used for control, wherein the control method comprises: the color sensor (6) of the transformer respirator performs color detection to check whether the filter material hygroscopic silica gel at the bottom of the third filter cavity (22) changes color: If the color of the filter material hygroscopic silica gel has turned light red, it means that the filter material hygroscopic silica gel needs to be replaced, and the color sensor (6) sends an alarm signal to the host computer, and the host computer controls the inner cylinder (2) to rotate in sequence to switch the two filter chambers (22) to face the color sensor (6) to re-perform color detection, and does not enter the next cycle to continue color detection; If not, the color of the filter material's hygroscopic silica gel is still blue, and the information feedback is that the filter material's hygroscopic silica gel is normal, and the next cycle is entered to continue color detection.

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