CN111584190A - Dry-type power transformer - Google Patents
Dry-type power transformer Download PDFInfo
- Publication number
- CN111584190A CN111584190A CN202010472708.2A CN202010472708A CN111584190A CN 111584190 A CN111584190 A CN 111584190A CN 202010472708 A CN202010472708 A CN 202010472708A CN 111584190 A CN111584190 A CN 111584190A
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- rod
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- transformer
- sliding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a dry-type power transformer, which structurally comprises a bottom frame, a connecting wire, a cross beam, a transformer box, an emergency cooler and a vent, wherein the upper end of the bottom frame is connected with the lower end of the transformer box through a bolt, the connecting wire is connected to the outer side of the transformer box, the temperature of a coil in the transformer box rises when the transformer box works while the transformer box is hot, a movable device in the emergency cooler is triggered by high temperature to push a jacking rod to move outwards, then a first stressed block is pushed by a jacking block to move outwards, then a sliding rod slides in a sliding tube, a connecting block moves outwards, a ball valve is pulled to move outwards to release gas in a gas storage box, the transformer box is cooled, the connecting rod drives a connecting shaft to pull a lock rod to take out the lock rod from the middle of a first hemisphere and a second hemisphere, the first hemisphere is pulled to cool by a fixture block, an upper cover plate is covered after maintenance, the second hemisphere pushes a rotating shaft, while the spring pushes the second hemisphere out by tension for accommodation and sealing.
Description
Technical Field
The invention belongs to the field of transformers, and particularly relates to a dry-type power transformer.
Background
The dry power transformer is a transformer in which the iron core and the winding are not immersed in insulating oil, and the cooling mode is divided into natural air cooling and forced air cooling, and the output capacity of the transformer can be improved by 50% under the condition of forced air cooling. The transformer coil is suitable for intermittent overload operation or emergency accident overload operation, but because the load loss and impedance voltage amplification are large during overload and the transformer is in a non-economic operation state, the temperature of the hottest point of the transformer coil still exceeds the limit of the bearing capacity of insulation under the condition of long-time overload, so that the thermal stability of the coil is damaged, the coil is deformed, and the wire turns are short-circuited to burn the transformer.
Disclosure of Invention
The invention provides a dry-type power transformer, aiming at solving the problem that the temperature of the hottest point of a transformer coil still exceeds the limit of the bearable insulation under the condition of long-time overload of the technology, so that the thermal stability of the coil is damaged, the coil is deformed, and the wire turns are short-circuited to burn the transformer.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a dry-type power transformer, its structure includes chassis, connecting wire, crossbeam, transformer case, emergent cooler, vent, chassis upper end and transformer case lower extreme bolted connection, the connecting wire is connected in the transformer case outside, crossbeam lower extreme and transformer case upside bolted connection, emergent cooler downside laminates with the transformer case upside mutually, vent and transformer case left end welded connection, emergent cooler includes screw thread mouth, ball valve, apron, activity ware, gas storage tank, casing, the below of ball valve is located to the screw thread mouth, the ball valve is connected between apron and activity ware, apron and casing welded connection, activity ware one side and gas storage tank welded connection to opposite side and casing welded connection, the apron inboard is equipped with rubber bed course and sliding clamping groove to the upside leans on a left side to be equipped with the interface.
As a further improvement of the invention, the movable device comprises a connecting block, a fixed rod, a sliding rod, an expander and a sliding tube, wherein the lower end of the connecting block is welded with the sliding rod, the fixed rod is connected with a gas storage box through a bolt, the sliding rod is in clearance fit with the inner wall of the sliding tube, the expander is connected between the fixed rod and the sliding rod, the sliding tube is welded with the inner side of the lower end of the shell, the fixed rod is parallel to the sliding rod, and a ball is contained in the sliding tube.
As a further improvement of the invention, the expander comprises an expansion joint, a first stress block and a connecting rod, wherein the expansion joint is welded and connected with the inner side of the first stress block, the first stress block is respectively fixed with a fixed rod and a sliding rod, the connecting rod is in threaded connection with the expansion joint, the number of the expansion joints is four, one end of the expansion joint is provided with a protruding block and the connecting rod, and the thermal expansion rate of the connecting rod is half of that of the expansion joint.
As a further improvement of the invention, the telescopic joint comprises an outer cover, an air cavity, a heated piece, a top block, a check piece and a jacking rod, wherein the inner side of the outer cover is movably matched with the outer side of the jacking rod, the air cavity is arranged in the outer cover, the heated piece is arranged on the outer side of the outer cover, the top block is welded and connected with a first stressed block, the check piece is in sliding contact with the jacking rod, the right side of the jacking rod is welded and connected with the left side of the top block, and the check piece and the right side of the check piece are triangles gradually narrowed from left to right and are obliquely arranged with the right end of the outer cover.
As a further improvement of the invention, the ball valve comprises a pull rod, a ball body, a spring, a second stress block and a rotating shaft, wherein the pull rod is movably clamped with the left side of the ball body, the ball body is connected with the rotating shaft in a shaft mode, the spring is connected between the second stress block and the ball body, the second stress block is connected with the lower side of the cover plate in a welding mode, the right side of the rotating shaft is connected with the second stress block in a welding mode, and the ball body can rotate around the rotating shaft in a clockwise mode.
As a further improvement of the invention, the ball body comprises a stabilizing block, a fixing plate, a first hemisphere, a locking rod, a second hemisphere, an air vent, a connecting shaft and a clamping block, the stabilizing block is fixedly connected with the middle part of the first hemisphere, the fixing plate is welded and connected with the right side of the stabilizing block, the first hemisphere is movably connected with the pull rod, the lock rod is connected with the fixed plate in a sliding way, the second hemisphere is in clearance fit with the first hemisphere through the lock rod, the vent hole is arranged in the middle of the first hemisphere and the second hemisphere, the connecting shaft is arranged in the middle of the right end of the pull rod, and is connected with the middle shaft of the lock rod, the fixture block is nested and connected with the middle part of the pull rod close to the right, the fixture block is positioned in the middle of the inner side of the first hemisphere, the right end of the first hemisphere is provided with a protrusion which is bent outwards, and the inner side of the left end of the second hemisphere is provided with a protruding hollow part, and the middle part of the two parts which are attached to each other is provided with a small hole close to the right.
Advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
1. the work of vary voltage case produces and makes inside coil temperature rise while the heat, and the inside movable ware of high temperature trigger emergency cooling ware promotes the ejector pin and outwards removes, promotes first atress piece through the kicking block afterwards and outwards removes, and the slide bar slides inside the sliding tube afterwards, and the connecting block outwards removes, and the inside gas of release gas storage tank is outwards removed to the pulling ball valve, cools down to the vary voltage case.
2. The pull rod drives the connecting shaft to pull the lock rod to take out from the middle of the first hemisphere and the second hemisphere, the first hemisphere is pulled open by the clamping block to be cooled, the upper cover plate is covered after maintenance, the second hemisphere pushes the rotating shaft to move leftwards through the second stress block, and meanwhile, the spring pushes the second hemisphere out through tension to be used for adapting and sealing.
Drawings
Fig. 1 is a schematic structural diagram of a dry power transformer according to the present invention.
Fig. 2 is a schematic diagram of the internal structure of an emergency cooler according to the present invention.
Fig. 3 is a schematic top view of an actuator according to the present invention.
Fig. 4 is a schematic top view of an expander according to the present invention.
Fig. 5 is a schematic cross-sectional structure diagram of an expansion joint according to the present invention.
Fig. 6 is a schematic structural diagram of a ball valve of the present invention.
Fig. 7 is a schematic view of the interior of a sphere according to the present invention.
In the figure: underframe-1, connecting line-2, crossbeam-3, transformer tank-4, emergency cooler-5, vent-6, threaded port-51, ball valve-52, cover plate-53, mobilizer-54, gas storage tank-55, shell-56, connecting block-541, fixed rod-542, sliding rod-543, expander-544, sliding tube-545, expansion joint-43 a, first stress block-43 b, connecting rod-43 c, outer cover-c 1, gas cavity-c 2, heated sheet-c 3, top block-c 4, non-return sheet-c 5, top feeding rod-c 6, pull rod-521, sphere-523, spring-523, second stress block-524, rotating shaft-525, stabilizing block-22 a, fixing plate-22 b 522, A first hemisphere-22 c, a lock rod-22 d, a second hemisphere-22 e, an air vent-22 f, a connecting shaft-22 g and a clamping block-22 h.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1:
as shown in figures 1 to 5:
the invention provides a dry-type power transformer, which structurally comprises an underframe 1, a connecting wire 2, a cross beam 3, a transformer tank 4, an emergency cooler 5 and a vent 6, wherein the upper end of the underframe 1 is connected with the lower end of the transformer tank 4 through a bolt, the connecting wire 2 is connected to the outer side of the transformer tank 4, the lower end of the cross beam 3 is connected with the upper side of the transformer tank 4 through a bolt, the lower side of the emergency cooler 5 is attached to the upper side of the transformer tank 4, the vent 6 is connected with the left end of the transformer tank 4 through a welding way, the emergency cooler 5 comprises a threaded port 51, a ball valve 52, a cover plate 53, a movable device 54, a gas storage tank 55 and a shell 56, the threaded port 51 is arranged below the ball valve 52, the ball valve 52 is connected between the cover plate 53 and the movable device 54, the cover plate 53 is connected with the shell 56 through a welding way, one side of, apron 53 inboard is equipped with rubber cushion and sliding clamping groove to the upside leans on the left to be equipped with the interface, is convenient for use emergent desuperheater back carry out inside maintenance and make-up gas that resets, prevents simultaneously that inside gas leakage from coming out.
The movable device 54 includes a connection block 541, a fixed rod 542, a sliding rod 543, an expander 544, and a sliding tube 545, wherein the lower end of the connection block 541 is welded to the sliding rod 543, the fixed rod 542 is bolted to the gas storage tank 55, the sliding rod 543 is in clearance fit with the inner wall of the sliding tube 545, the expander 544 is connected between the fixed rod 542 and the sliding rod 543, the sliding tube 545 is welded to the inner side of the lower end of the case 56, the fixed rod 542 is parallel to the sliding rod 543, and balls are contained in the sliding tube 545 to guide the fixed rod 542, so that the sliding rod 543 can move smoothly.
The expander 544 comprises a telescopic joint 43a, a first force receiving block 43b and connecting rods 43c, the telescopic joint 43a is welded and connected with the inner side of the first force receiving block 43b, the first force receiving block 43b is respectively fixed with a fixing rod 542 and a sliding rod 543, the connecting rods 43c are in threaded connection with the telescopic joints 43a, the number of the telescopic joints 43a is four, one end of each telescopic joint 43a is provided with a protruding block and the connecting rods 43c, meanwhile, the thermal expansion rate of each connecting rod 43c is half of that of each telescopic joint 43a, the stability of the expander 544 during expansion is improved, and the two telescopic joints 43a and one connecting rod 43c are integrated, so that the sensitivity of expansion 544 is improved, the expander can react to the temperature rise of the transformer in a short time, and the damage of high temperature to the transformer coil is reduced.
The telescopic joint 43a comprises an outer cover c1, an air cavity c2, a heated sheet c3, a top block c4, a check sheet c5 and a pushing rod c6, the inner side of the outer cover c1 is movably matched with the outer side of the pushing rod c6, the air cavity c2 is arranged inside an outer cover c1, the heated sheet c3 is installed on the outer side of the outer cover c1, the top block c4 is connected with a first force bearing block 43b in a welding mode, the check sheet c5 is in sliding contact with the pushing rod c6, the right side of the pushing rod c6 is connected with the left side of the top block c4 in a welding mode, the check sheet c5 is in a triangular shape, the right side of the triangular shape is gradually narrowed from left to right, meanwhile, the right end of the outer cover c1 is obliquely installed to clamp the heated and extended pushing rod c6, the telescopic joint 43a is prevented from being cooled and retracted after air is released downwards, and the ball valve 52 is pulled.
The specific use mode and function of the embodiment are as follows:
in the invention, the temperature of the coil inside the transformer tank 4 is raised when the transformer tank 4 is operated and hot, the vent 6 can not achieve the purpose of reducing the temperature after long-time load use, so that the temperature inside the transformer tank 4 is rapidly raised, high-temperature gas triggers the movable device 54 inside the emergency cooler 5 through the threaded port 51, the liquid in the air cavity c2 is evaporated through the increased surface area of the heated sheet c3, the pushing rod c6 is pushed to drive the jacking block c4 to move outwards, the check sheet c5 is obliquely arranged to prevent the result that the pushing rod c6 retracts due to the fact that the gas released by the ball valve 52 cools the outer cover c1, then the first stressed block 43b is pushed through the jacking block c4 and the supporting force is provided by the connecting rod 43c to expand outwards, then the sliding rod 543 is driven to slide the fixing rod 542 inside the sliding tube 545, then the connecting block 541 is driven to move outwards, and thus the ball valve 52 is pulled to move outwards to release the gas inside the gas storage tank 55, and cooling the transformation box 4.
Example 2:
as shown in fig. 6 to 7:
the ball valve 52 includes a pull rod 521, a ball 522, a spring 523, a second stressed block 524 and a rotating shaft 525, the pull rod 521 is movably engaged with the left side of the ball 522, the ball 522 is connected with the rotating shaft 525 through a shaft, the spring 523 is connected between the second stressed block 524 and the ball 522, the second stressed block 524 is welded to the lower side of the cover plate 53, the right side of the rotating shaft 525 is welded to the second stressed block 524, and the ball 522 can rotate around the rotating shaft 525 with a clockwise needle, so that the fitting degree of the ball 522 is improved when the ball is installed after maintenance, and the ball 522 is prevented from being damaged due to hard fitting.
The sphere 522 comprises a stabilizing block 22a, a fixing plate 22b, a first hemisphere 22c, a lock rod 22d, a second hemisphere 22e, an air vent 22f, a connecting shaft 22g and a clamping block 22h, wherein the stabilizing block 22a is fixedly embedded in the middle of the first hemisphere 22c, the fixing plate 22b is welded to the right side of the stabilizing block 22a, the first hemisphere 22c is movably connected with the pull rod 521, the lock rod 22d is slidably connected with the fixing plate 22b, the second hemisphere 22e is in clearance fit with the first hemisphere 22c through the lock rod 22d, the air vent 22f is arranged in the middle of the first hemisphere 22c and the second hemisphere 22e, the connecting shaft 22g is arranged in the middle of the right end of the pull rod 521 and is connected with the middle shaft of the lock rod 22d, the clamping block 22h is nested and connected with the middle of the pull rod 521 close to the right, the clamping block 22h is arranged in the middle of the inner side of the first hemisphere 22c, and the right end of the first, and the inner side of the left end of the second hemisphere 22e is provided with a protruding hollow part, and the two parts are attached to each other, and a small hole is arranged near the right of the middle part, so that the first hemisphere 22c and the second hemisphere 22e can be locked by the lock rod 22d and prevented from being pushed open by gas.
The specific use mode and function of the embodiment are as follows:
in the invention, when the transformation box 4 runs under an overload condition in an emergency, the movable device 54 pulls the pull rod 521 to drive the connecting shaft 22g to pull the lock rod 22d, the lock rod is taken out from the middle of the first hemisphere 22c and the second hemisphere 22e under the guidance of the fixing plate 22b, the fixture block 22 abuts against the stabilizing block 22a to pull the first hemisphere 22c open along with the continuous pulling of the pull rod 521, the gas in the sphere 522 is released to cool the transformation box 4, the cover plate 53 is opened to overhaul after the cooling, then the cover plate is covered, the second hemisphere 22e pushes the rotating shaft 525 to move leftwards through the second stressed block 524, and meanwhile, the spring 523 pushes the second hemisphere 22e out through tension to adapt and seal.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (6)
1. The utility model provides a dry-type power transformer, its structure includes chassis (1), connecting wire (2), crossbeam (3), transformer case (4), emergent desuperheater (5), vent (6), chassis (1) upper end and transformer case (4) lower extreme bolted connection, the outside at transformer case (4) is connected in connecting wire (2), crossbeam (3) lower extreme and transformer case (4) upside bolted connection, emergent desuperheater (5) downside is laminated with transformer case (4) upside mutually, vent (6) and transformer case (4) left end welded connection, its characterized in that:
emergent desuperheater (5) are including screw thread mouth (51), ball valve (52), apron (53), activity ware (54), gas storage tank (55), shell (56), the below of ball valve (52) is located in screw thread mouth (51), ball valve (52) are connected between apron (53) and activity ware (54), apron (53) and shell (56) welded connection, activity ware (54) one side and gas storage tank (55) welded connection to opposite side and shell (56) welded connection.
2. A dry-type power transformer as claimed in claim 1, in which: the movable device (54) comprises a connecting block (541), a fixing rod (542), a sliding rod (543), an expander (544) and a sliding pipe (545), wherein the lower end of the connecting block (541) is connected with the sliding rod (543) in a welding mode, the fixing rod (542) is connected with the air storage box (55) through bolts, the sliding rod (543) is in clearance fit with the inner wall of the sliding pipe (545), the expander (544) is connected between the fixing rod (542) and the sliding rod (543), and the sliding pipe (545) is connected with the inner side of the lower end of the shell (56) in a welding mode.
3. A dry-type power transformer as claimed in claim 2, in which: the expander (544) comprises an expansion joint (43a), a first force-bearing block (43b) and a connecting rod (43c), the expansion joint (43a) and the inner side of the first force-bearing block (43b) are connected in a welding mode, the first force-bearing block (43b) is fixed with a fixing rod (542) and a sliding rod (543) respectively, and the connecting rod (43c) is in threaded connection with the expansion joint (43 a).
4. A dry-type power transformer as claimed in claim 3, in which: the telescopic joint (43a) comprises an outer cover (c 1), an air cavity (c2), a heated plate (c3), a top block (c4), a check plate (c5) and a top feeding rod (c6), wherein the inner side of the outer cover (c 1) is movably matched with the outer side of the top feeding rod (c6), the air cavity (c2) is arranged inside the outer cover (c 1), the heated plate (c3) is arranged on the outer side of the outer cover (c 1), the top block (c4) is connected with a first stressed block (43b) in a welded mode, the check plate (c5) is in sliding contact with the top feeding rod (c6), and the right side of the top feeding rod (c6) is connected with the left side of the top block (c4) in a welded mode.
5. A dry-type power transformer as claimed in claim 2, in which: ball valve (52) are including pull rod (521), spheroid (522), spring (523), second atress piece (524), pivot (525), pull rod (521) and spheroid (522) left side activity block, spheroid (522) and pivot (525) hub connection, spring (523) are connected between second atress piece (524) and spheroid (522), second atress piece (524) and apron (53) downside welded connection, pivot (525) right side and second atress piece (524) welded connection.
6. A dry-type power transformer as claimed in claim 5, in which: the sphere (522) comprises a stabilizing block (22a), a fixing plate (22b), a first hemisphere (22c), a lock rod (22d), a second hemisphere (22e), a vent (22f), a connecting shaft (22g) and a clamping block (22h), wherein the stabilizing block (22a) is fixedly connected with the middle of the first hemisphere (22c), the fixing plate (22b) is welded to the right side of the stabilizing block (22a), the first hemisphere (22c) is movably connected with a pull rod (521), the lock rod (22d) is slidably connected with the fixing plate (22b), the second hemisphere (22e) is in clearance fit with the first hemisphere (22c) through the lock rod (22d), the vent (22f) is arranged in the middle of the first hemisphere (22c) and the second hemisphere (22e), the pull rod (521) is arranged in the middle of the right end of the pull rod (22g) and is connected with the middle of the lock rod (22d), the fixture block (22h) is connected with the middle part of the pull rod (521) in a nesting mode close to the right position, and the fixture block (22h) is located in the middle of the inner side of the first hemisphere (22 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472708.2A CN111584190A (en) | 2020-05-29 | 2020-05-29 | Dry-type power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472708.2A CN111584190A (en) | 2020-05-29 | 2020-05-29 | Dry-type power transformer |
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| Publication Number | Publication Date |
|---|---|
| CN111584190A true CN111584190A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010472708.2A Pending CN111584190A (en) | 2020-05-29 | 2020-05-29 | Dry-type power transformer |
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| CN (1) | CN111584190A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070188282A1 (en) * | 2006-02-15 | 2007-08-16 | Folts Douglas C | Supplementary transformer cooling in a reactive power compensation system |
| CN204463981U (en) * | 2015-03-05 | 2015-07-08 | 维益宏基集团有限公司 | A kind of novel dry transformer |
| CN105737652A (en) * | 2016-04-12 | 2016-07-06 | 张洪延 | Heat transmission device |
| CN109600947A (en) * | 2018-12-17 | 2019-04-09 | 中山市旭普电子科技有限公司 | Intelligent numerical control LED waterproof driving power |
| CN209312549U (en) * | 2019-03-05 | 2019-08-27 | 秦文 | A kind of nodal wood type 10kv dry-type transformer |
| CN111192742A (en) * | 2020-01-08 | 2020-05-22 | 左刚 | Emergency treatment device with dry-type transformer is inside to catch fire |
-
2020
- 2020-05-29 CN CN202010472708.2A patent/CN111584190A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070188282A1 (en) * | 2006-02-15 | 2007-08-16 | Folts Douglas C | Supplementary transformer cooling in a reactive power compensation system |
| CN204463981U (en) * | 2015-03-05 | 2015-07-08 | 维益宏基集团有限公司 | A kind of novel dry transformer |
| CN105737652A (en) * | 2016-04-12 | 2016-07-06 | 张洪延 | Heat transmission device |
| CN109600947A (en) * | 2018-12-17 | 2019-04-09 | 中山市旭普电子科技有限公司 | Intelligent numerical control LED waterproof driving power |
| CN209312549U (en) * | 2019-03-05 | 2019-08-27 | 秦文 | A kind of nodal wood type 10kv dry-type transformer |
| CN111192742A (en) * | 2020-01-08 | 2020-05-22 | 左刚 | Emergency treatment device with dry-type transformer is inside to catch fire |
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