CN210861959U - Transformer oil paper insulation drying device that wets based on low frequency current heating method - Google Patents
Transformer oil paper insulation drying device that wets based on low frequency current heating method Download PDFInfo
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- CN210861959U CN210861959U CN201920271446.6U CN201920271446U CN210861959U CN 210861959 U CN210861959 U CN 210861959U CN 201920271446 U CN201920271446 U CN 201920271446U CN 210861959 U CN210861959 U CN 210861959U
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Abstract
The utility model discloses an insulating drying device that wets of transformer oil paper based on low frequency current heating method mainly includes frame and low frequency power box, frame top left part fixed mounting has the low frequency power box, the vacuum pump is installed to frame top right part, frame top right side fixed mounting have with vacuum pump complex protecting frame, lateral wall fixed mounting has the assembly head before the protecting frame, the assembly head switches on with the inlet port of vacuum pump, control panel is installed to protecting frame right side wall, the auxiliary frame that the equidistance was arranged is installed to the inner wall lower part around the frame. The utility model has reasonable structural design, can carry out on-site low-voltage winding live drying dehumidification operation, is more economical compared with the traditional dehumidification device, has high heating efficiency, short time consumption and obvious dehumidification effect; the device is more flexible while ensuring the stability; and under the prerequisite of guaranteeing the normal work of auxiliary assembly, accomodate it in interior space, make full use of space is fit for outdoor operations.
Description
Technical Field
The utility model relates to a transformer drying device specifically is a transformer oiled paper is insulating drying device that wets based on low frequency current heating method.
Background
The insulation system of the transformer is a key factor influencing the reliable operation of the transformer, and the water content of the insulation paper board of the transformer directly determines the reliability and the service life of the transformer. The water content in the insulating material is too high, so that on one hand, the insulation resistance of the transformer is reduced, the insulation strength of the transformer is reduced, and the safe operation of the transformer is seriously influenced; on the other hand, the loss is increased, the transformer is heated, the aging of the insulating material is accelerated, and the service life is shortened.
In the existing drying technology, the vacuum drying and dehumidifying technology is eliminated by times due to the ultra-long heating time; the hot oil drying and dehumidifying technology is greatly influenced by the environmental temperature, the insulation thickness of the transformer and the voltage grade, and is not suitable for the field drying and dehumidifying of large transformers; in order to meet the requirements of on-site drying and dehumidification of large transformers, a novel device for heating a power supply in an on-site winding electrified drying and dehumidification technology is provided; in order to meet the outdoor working environment, the device is required to be convenient to move, and auxiliary equipment such as wires and the like are required to be well stored and protected; in order to ensure normal operation, the portable power source needs to be carried, so that the stability of the portable power source and the convenience in loading, unloading and overhauling are part of research.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transformer oiled paper is insulating drying device that wets based on low frequency current heating method to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a transformer oil paper insulation damp drying device based on a low-frequency current heating method mainly comprises an outer frame and a low-frequency power box, wherein the left part of the top end of the outer frame is fixedly provided with the low-frequency power box, the right part of the top end of the outer frame is provided with a vacuum pump, the right side of the top end of the outer frame is fixedly provided with a protective frame matched with the vacuum pump, the front side wall of the protective frame is fixedly provided with an assembling head, the assembling head is communicated with an air inlet port of the vacuum pump, the right side wall of the protective frame is provided with a control panel, the lower parts of the front and rear inner walls of the outer frame are provided with auxiliary frames which are arranged at equal intervals, the top end of the auxiliary frames is provided with a slide rail, the left end of the slide rail is provided with a wedge-shaped, the utility model discloses a battery pack, including frame, clamping jaw bottom, clamping jaw, frame top inner wall, pull rod, clamping seat, clamping jaw bottom, clamping jaw lower part opening part fixed mounting has the lining piece with clamping jaw complex, frame bottom lateral wall fixed mounting has the wheel carrier of bilateral symmetry, and the wheel is installed in both ends rotation around the wheel carrier.
As a further aspect of the present invention: the low-frequency power supply box mainly comprises a box body, a middle shaft, a gas pipe and a short-circuit wire, wherein the left part of the box body is provided with a containing groove, the gas pipe and the short-circuit wire are placed in the containing groove, the left part of the top end of the box body is rotatably provided with a cover plate, the side wall of the top end of the right part of the box body is fixedly provided with a limiting sleeve, the inner side of the limiting sleeve is rotatably provided with a transfer block, the middle part of the transfer block is fixedly provided with the middle shaft, the middle shaft penetrates through the side wall of the top end of the box body through the limiting sleeve, the inner wall of the bottom end of the box body is provided with a power supply main board, the middle part of the top end of the power supply main board is fixedly provided with an assembly sleeve with an upward opening, the outer wall of, the outer side wall of the lower part of the middle shaft is fixedly provided with an upper inner ring matched with the upper outer ring, the outer wall of the upper inner ring is in sliding contact with the inner wall of the upper outer ring and is electrically connected with the upper outer ring, the lower part of the inner side of the assembly set is fixedly provided with a positive pole positioned at the right part of the lower outer ring, the top end of the positive pole is fixedly connected with the outer wall of the lower outer ring, the bottom end of the positive pole is electrically connected with the power supply main board, the outer side wall of the lower part of the middle shaft is fixedly provided with a lower inner ring matched with the lower outer ring, the outer wall of the lower inner ring is in sliding contact with the inner wall of the lower outer ring and is electrically connected with the lower outer ring, the inner side of the lower part of the middle shaft is provided with a wire passing channel matched with the upper inner ring and the lower inner ring, the inner wall of the upper inner ring is fixedly, the insulation cover coils in the axis outside, axis outside fixed mounting has the baffle with insulation cover complex, axis upper portion is located the stop collar top and installs the driving lever, lateral wall fixed mounting has wear-resisting cover before the box, the insulation cover runs through lateral wall before the box via wear-resisting cover, insulation cover front end fixed mounting has the joint, connects and negative pole line and positive pole line electric connection respectively.
As a further aspect of the present invention: and an access panel is arranged on the left side of the outer frame.
As a further aspect of the present invention: an anti-skid cylinder is sleeved at the left part of the pull rod.
As a further aspect of the present invention: the limiting frame mainly comprises a pressing rod, a handle, an adsorption frame and a rubber strip, the pressing rod is rotatably connected with the inner wall of the top end of the outer frame, the rubber strip is fixedly mounted at the bottom end of the pressing rod and is in close contact with the extrusion seat, the handle is fixedly mounted on the left side wall of the upper portion of the pressing rod, the adsorption frame is fixedly mounted on the right side wall of the lower portion of the pressing rod, and the adsorption frame corresponds to the permanent magnet in position after rotating around the left end of the pressing rod.
As a further aspect of the present invention: the left part of the handle is sleeved with a rubber sleeve.
As a further aspect of the present invention: the control panel is all electric connection with group battery, power mainboard and vacuum pump, control panel is MTN633614 type touch screen control panel.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has reasonable structural design, can carry out on-site low-voltage winding live drying dehumidification operation, is more economical compared with the traditional dehumidification device, has high heating efficiency, short time consumption and obvious dehumidification effect; the device is more flexible while ensuring the stability; and under the prerequisite of guaranteeing the normal work of auxiliary assembly, accomodate it in interior space, make full use of space is fit for outdoor operations.
Drawings
Fig. 1 is a schematic structural diagram of a transformer oiled paper insulation damp drying device based on a low-frequency current heating method.
Fig. 2 is a schematic structural diagram of the interior of the transformer oil paper insulation damp drying device based on a low-frequency current heating method.
Fig. 3 is a schematic structural view of a left viewing angle at a position a in fig. 2.
Fig. 4 is a schematic diagram of positions among a pull rod, a clamping seat and a clamping pin in the transformer oil paper insulation damp drying device based on a low-frequency current heating method.
Fig. 5 is a schematic structural diagram at B in fig. 2.
Fig. 6 is a schematic structural view of a left viewing angle at C in fig. 2.
Fig. 7 is a schematic cross-sectional view at D in fig. 3.
Fig. 8 is a circuit diagram of the connection state of the power supply main board, the battery pack and the winding of the transformer to be dried in the field winding live drying and dehumidifying device.
In the figure: the device comprises an outer frame 1, a permanent magnet 2, a vacuum pump 3, a rubber strip 4, an extrusion seat 5, wheels 6, a wheel carrier 7, a control panel 8, a protective frame 9, an assembling head 10, a box body 11, a clamping pin 12, a clamping seat 13, a pull rod 14, an air pipe 15, a handle 16, a pressing rod 17, a slide rail 18, a short connecting wire 19, a battery pack 20, an anchor ear 21, a bottom plate 22, an auxiliary frame 23, a baffle plate 24, a middle shaft 25, an assembling set 26, a deflector rod 27, a switching block 28, a limiting sleeve 29, a wear-resistant sleeve 30, a connector 31, a power supply main board 32, a positive pole 33, a negative pole 34, an insulating sleeve 35, an upper inner ring 36, a lower inner ring 37, a lower outer ring 38, an upper outer ring 39, a positive pole 40, a filler block 41.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 8, in an embodiment of the present invention, a transformer oil paper insulation damp drying device based on a low-frequency current heating method mainly includes an outer frame 1 and a low-frequency power box, the low-frequency power box is fixedly installed at the left portion of the top end of the outer frame 1, a vacuum pump 3 is installed at the right portion of the top end of the outer frame 1, a protection frame 9 matched with the vacuum pump 3 is fixedly installed at the right portion of the top end of the outer frame 1, an assembly head 10 is fixedly installed at the front side wall of the protection frame 9, the assembly head 10 is communicated with an air inlet port of the vacuum pump 3, a control panel 8 is installed at the right side wall of the protection frame 9, auxiliary frames 23 arranged at equal intervals are installed at the lower portions of the front and rear inner walls of the outer frame 1, slide rails 18 are installed at the top ends of the slide rails 23, a wedge-shaped opening is, rubber pads 44 arranged at equal intervals are fixedly mounted at the top end of the bottom plate 22, the battery pack 20 is placed at the top end of the rubber pads 44, the side walls, located at the front side and the rear side of the battery pack 20, at the top end of the bottom plate 22 are provided with hoops 21 in an assembling manner, the side walls at the bottom end of the hoops 21 are in close contact with the side walls at the top end of the battery pack 20, the left part of the inner wall at the top end of the outer frame 1 is rotatably provided with a limiting frame, the top end of the hoop 21 mounted at the right part of the battery pack 20 at the leftmost side is fixedly provided with a squeezing seat 5 matched with the limiting frame, the inner wall at the top end of the outer frame 1 is provided with a permanent magnet 2 matched with the limiting frame, a pull rod 14 is rotatably mounted between the front outer wall and the rear outer wall of the left, the lateral wall of the bottom end of the outer frame 1 is fixedly provided with bilateral symmetry wheel carriers 7, and the front end and the rear end of each wheel carrier 7 are rotatably provided with wheels 6.
The low-frequency power supply box mainly comprises a box body 11, a middle shaft 25, a gas pipe 15 and a short-circuit wire 19, wherein a containing groove is formed in the left portion of the box body 11, the gas pipe 15 and the short-circuit wire 19 are placed in the containing groove, a cover plate is rotatably installed at the left portion of the top end of the box body 11, a limiting sleeve 29 is fixedly installed on the side wall of the top end of the right portion of the box body 11, a switching block 28 is rotatably installed on the inner side of the limiting sleeve 29, the middle shaft 25 is fixedly installed in the middle of the switching block 28, the middle shaft 25 penetrates through the side wall of the top end of the box body 11 through the limiting sleeve 29, a power supply main board 32 is installed on the inner wall of the bottom end of the box body 11, an assembly set 26 with an upward opening is fixedly installed in the middle of the top end of the power supply main board 32, the outer wall, the bottom end of the negative pole pillar 34 is electrically connected with the power supply main board 32, the outer side wall of the lower part of the center shaft 25 is fixedly provided with an upper inner ring 36 matched with the upper outer ring 39, the outer wall of the upper inner ring 36 is in sliding contact with the inner wall of the upper outer ring 39 and is electrically connected with the inner wall of the upper outer ring 39, the lower part of the inner side of the assembly kit 26 is fixedly provided with a lower outer ring 38, the inner side of the assembly kit 26 is positioned at the right part of the lower outer ring 38 and is fixedly provided with a positive pole pillar 33, the top end of the positive pole pillar 33 is fixedly connected with the outer wall of the lower outer ring 38, the bottom end of the positive pole pillar 33 is electrically connected with the power supply main board 32, the outer side wall of the lower part of the center shaft 25 is fixedly provided with a lower inner ring 37 matched with the lower outer ring 38, the outer wall of the lower inner ring 37 is in sliding contact with, negative pole line 42 and positive pole line 40 run through axis 25 lower part lateral wall through there being wire passage, axis 25 lateral wall fixed mounting have with negative pole line 42 and positive pole line 40 complex insulating cover 35, insulating cover 35 coils in the axis 25 outside, axis 25 outside fixed mounting have with insulating cover 35 complex baffle 24, axis 25 upper portion is located stop collar 29 top and installs driving lever 27, lateral wall fixed mounting has wear-resisting cover 30 before the box 11, insulating cover 35 runs through the lateral wall before the box 11 via wear-resisting cover 30, insulating cover 35 front end fixed mounting has joint 31, joint 31 and negative pole line 42 and positive pole line 40 electric connection respectively.
And an access panel is arranged on the left side of the outer frame 1.
The left part of the pull rod 14 is sleeved with an anti-skid cylinder.
The spacing mainly includes to support depression bar 17, handle 16, adsorption frame 43 and rubber strip 4, support depression bar 17 and rotate and connect 1 top inner wall of frame, support depression bar 17 bottom fixed mounting has rubber strip 4, rubber strip 4 and extrusion seat 5 in close contact with, support depression bar 17 upper portion left side wall fixed mounting has handle 16, support depression bar 17 lower part right side wall fixed mounting adsorption frame 43, adsorption frame 43 corresponds around the position and the 2 positions of permanent magnet after supporting depression bar 17 left end rotation.
The left part of the handle 16 is sleeved with a rubber sleeve.
The utility model discloses a theory of operation is:
the utility model relates to a transformer oiled paper is insulating drying device that wets based on low frequency current heating method, during the use, NPC three level circuit topology is chooseed for use to the main circuit of power mainboard 32, because compare two level circuit commonly used and the three level circuit of flying capacitor type, the voltage drop that the switching device that three level circuit was in the off-state at any moment bore can reduce 1/2 for bus voltage, can use low withstand voltage device to realize high-pressure high-power output, be suitable for the application scenario of high voltage large capacity than two level circuit. And the DU/DT of one-time action of the switching element of the three-level circuit is only half of that of the traditional two-level circuit, so the switching stress born by the switching element is also reduced. Based on the above points, a three-level circuit is selected from the three-level circuit and the two-level circuit.
In the topology of three types of three-level circuits which are widely applied at the present stage, although the flying capacitor type three-level circuit has flexible selection of the switch state, each phase bridge arm of the flying capacitor type three-level circuit needs one clamping capacitor, the direct current side also needs two voltage division capacitors, the capacitors have large volume, high cost, difficult packaging and poor economy, and the topology control method is complex and difficult to realize. Although the cascaded three-level circuit does not have the problem of uneven voltage division of a capacitor on the direct current side, the problem of voltage sharing is solved at the cost of increasing the number of rectifiers, and a series of problems are caused by the increase of an independent power supply required by the direct current side and the increase of a required rectifying circuit. In consideration of economy, feasibility and the like, the NPC three-level circuit is finally selected as the main circuit of the power supply main board 32 in the project.
The connection states of the main circuit, the battery pack and the winding of the transformer to be dried are shown in FIG. 8, C1、C2Indicating the voltage-dividing capacitance on the DC side, the voltage U on the DC sidedProvided by an external rectifying circuit, O is the midpoint of a direct current capacitor, T1、T2、T3、T4The power electronic switching device is characterized in that an LC filtering link on the load side of a three-level circuit is connected with a primary side winding of a transformer, a secondary side winding of the transformer is in short circuit, the transformer is heated by using short-circuit current, the amplitude and the frequency of output voltage of a power supply main board 32 are adjusted by a control panel 8 according to the temperature requirement, moisture in the transformer is evaporated by using the heat generated by the winding and an iron core of the transformer, and the heat is generated from the insulated interior of the transformer during heating, so that the heating efficiency is high, the time consumption is short, the dehumidification effect is obvious, and the method is suitable for heating and drying large transformers on site.
Then, the air pipe 15 is communicated between the assembling head 10 and the inner space of the transformer, the vacuum pump 3 is communicated with the inside of the transformer, the evaporated damp air is guided to the outside of the transformer, transformer oil is dried, the air pipe 15, the negative wire 42, the positive wire 40 and the short connecting wire 19 with the insulating sleeve 35 can be contained in the box body 11, the negative wire 42 and the positive wire 40 are wound and unwound by rotating the middle shaft 25, the outer wall of the upper inner ring 36 is in sliding contact with the inner wall of the upper outer ring 39 and is electrically connected with the inner wall of the lower outer ring 37, the outer wall of the lower inner ring 37 is in sliding contact with the inner wall of the lower outer ring 38 and is electrically connected with the outer wall of the lower outer ring, the electrical connection between the negative wire 42 and the positive wire 40 and the power supply main board 32 is not influenced.
Can carry multiunit group battery 20 through bottom plate 22, establish ties between the group battery 20, cooperation slide rail 18 can drag group battery 20 business turn over frame 1, it is convenient to overhaul the change to group battery 20, when needs stimulate group battery 20, pull down handle 16 will support the perk of depression bar 17 right-hand member, rubber strip 4 separates with extrusion seat 5, later adsorb permanent magnet 2 and adsorption frame 43 together, can not receive when guaranteeing that bottom plate 22 removes and support the depression bar 17 interference, base 22 can be between slide rail 18 horizontal slip, after overhauing and changing, promote bottom plate 22 right behind the position, through 16 upsets with rubber strip 4 and 5 joints of extrusion seat, fix bottom plate 22 position through support depression bar 17, when guaranteeing stability, later stage overhauls more nimble.
The device can perform on-site low-voltage winding live drying dehumidification operation, is more economical compared with the traditional dehumidification device, and has the advantages of high heating efficiency, short time consumption and remarkable dehumidification effect; the device is more flexible while ensuring the stability; and under the prerequisite of guaranteeing the normal work of auxiliary assembly, accomodate it in interior space, make full use of space is fit for outdoor operations.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an insulating drying device that wets of transformer oil paper based on low frequency current heating method mainly includes frame (1) and low frequency power box, its characterized in that, frame (1) top left part fixed mounting has the low frequency power box, vacuum pump (3) are installed to frame (1) top right part, frame (1) top right side fixed mounting has with vacuum pump (3) complex protection frame (9), lateral wall fixed mounting has assembly head (10) before protection frame (9), assembly head (10) and vacuum pump (3) the inlet port switch-on, control panel (8) are installed to protection frame (9) right side wall, auxiliary frame (23) that the equidistance was arranged are installed to inner wall lower part around frame (1), slide rail (18) are installed in auxiliary frame (23) top power supply, slide rail (18) left end is provided with the wedge opening, slide rail (18) are close to frame (1) inner wall one end power supply connection (1) inner wall, a bottom plate (22) is connected between the two slide rails (18) in a sliding manner, rubber pads (44) which are arranged at equal intervals are fixedly installed at the top end of the bottom plate (22), a battery pack (20) is placed at the top end of the rubber pads (44), hoops (21) are assembled on the side walls, located at the front side and the rear side of the battery pack (20), at the top end of the bottom plate (22), the side walls at the bottom end of each hoop (21) are in close contact with the side wall at the top end of the battery pack (20), a limiting frame is rotatably installed at the left part of the inner wall at the top end of the outer frame (1), extrusion seats (5) matched with the limiting frame are fixedly installed at the top end of the hoop (21) at the right part of the leftmost battery pack (20), permanent magnets (2) matched with the limiting frame are installed on the inner wall at the top end of the outer frame (1, lateral wall upper portion fixed mounting has bayonet lock (12) with bayonet lock (13) complex around frame (1), opening part fixed mounting of cassette (13) lower part has filler block (41) with bayonet lock (12) complex, frame (1) bottom lateral wall fixed mounting has bilateral symmetry's wheel carrier (7), and wheel (6) are installed in both ends rotation around wheel carrier (7).
2. The transformer oil paper insulation damp drying device based on the low-frequency current heating method is characterized in that the low-frequency power box mainly comprises a box body (11), a middle shaft (25), an air pipe (15) and a short connecting wire (19), wherein a containing groove is formed in the left portion of the box body (11), the air pipe (15) and the short connecting wire (19) are placed in the containing groove, a cover plate is rotatably installed on the left portion of the top end of the box body (11), a limiting sleeve (29) is fixedly installed on the side wall of the top end of the right portion of the box body (11), a switching block (28) is rotatably installed on the inner side of the limiting sleeve (29), the middle shaft (25) is fixedly installed in the middle of the switching block (28), the middle shaft (25) penetrates through the side wall of the top end of the box body (11) through the limiting sleeve (29), a power main board (32) is installed on the inner wall of the, the outer wall of the lower part of the middle shaft (25) is rotatably connected with the inner side wall of a matching device (26), the upper part of the inner side of the matching device (26) is fixedly provided with an upper outer ring (39), the inner side of the matching device (26) is positioned at the left part of the upper outer ring (39) and is fixedly provided with a cathode post (34), the top end of the cathode post (34) is fixedly connected with the outer wall of the upper outer ring (39), the bottom end of the cathode post (34) is electrically connected with a power supply main board (32), the outer side wall of the lower part of the middle shaft (25) is fixedly provided with an upper inner ring (36) matched with the upper outer ring (39), the outer wall of the upper inner ring (36) is in sliding contact with the inner wall of the upper outer ring (39) and is electrically connected with the inner wall of the lower outer ring (38), the inner side of the matching device (26) is positioned at the right part of the lower outer ring, the bottom end of the positive post (33) is electrically connected with the power supply main board (32), the outer side wall of the lower part of the center shaft (25) is fixedly provided with a lower inner ring (37) matched with the lower outer ring (38), the outer wall of the lower inner ring (37) is in sliding contact with the inner wall of the lower outer ring (38) and is electrically connected with the lower inner ring, the inner side of the lower part of the center shaft (25) is provided with a wire passing channel matched with the upper inner ring (36) and the lower inner ring (37), the inner wall of the upper inner ring (36) is fixedly provided with a negative wire (42), the inner wall of the lower inner ring (37) is fixedly provided with a positive wire (40), the negative wire (42) and the positive wire (40) penetrate through the side wall of the lower part of the center shaft (25) through the wire passing channel, the side wall of the center shaft (25) is fixedly provided with an insulating sleeve (35) matched with the negative wire (42) and the positive wire (40), the insulating sleeve (35) is coiled outside the center shaft, axis (25) upper portion is located stop collar (29) top and installs driving lever (27), lateral wall fixed mounting has wear-resisting cover (30) before box (11), insulating cover (35) run through box (11) preceding lateral wall via wear-resisting cover (30), insulating cover (35) front end fixed mounting has joint (31), and joint (31) and negative pole line (42) and positive pole line (40) electric connection respectively.
3. The transformer oiled paper insulation damp drying device based on the low-frequency current heating method according to claim 1, characterized in that an access panel is installed on the left side of the outer frame (1).
4. The transformer oiled paper insulation damp drying device based on the low-frequency current heating method according to claim 1, characterized in that an anti-slip cylinder is sleeved on the left portion of the pull rod (14).
5. The transformer oiled paper insulation damp drying device based on the low-frequency current heating method is characterized in that the limiting frame mainly comprises a pressing rod (17), a handle (16), an adsorption frame (43) and a rubber strip (4), the pressing rod (17) is rotatably connected with the inner wall of the top end of the outer frame (1), the rubber strip (4) is fixedly installed at the bottom end of the pressing rod (17), the rubber strip (4) is in close contact with the extrusion seat (5), the handle (16) is fixedly installed on the left side wall of the upper portion of the pressing rod (17), the adsorption frame (43) is fixedly installed on the right side wall of the lower portion of the pressing rod (17), and the position, after the adsorption frame (43) rotates around the left end of the pressing rod (17), corresponds to the position of the permanent magnet (2).
6. The transformer oilpaper insulation damp drying device based on the low-frequency current heating method according to claim 5, characterized in that a rubber sleeve is sleeved on the left portion of the handle (16).
7. The transformer oiled paper insulation damp drying device based on the low-frequency current heating method according to claim 1, wherein the control panel (8) is electrically connected with the battery pack (20), the power supply main board (32) and the vacuum pump (3), and the control panel (8) is a MTN633614 touch screen control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271446.6U CN210861959U (en) | 2019-03-04 | 2019-03-04 | Transformer oil paper insulation drying device that wets based on low frequency current heating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271446.6U CN210861959U (en) | 2019-03-04 | 2019-03-04 | Transformer oil paper insulation drying device that wets based on low frequency current heating method |
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| CN210861959U true CN210861959U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920271446.6U Active CN210861959U (en) | 2019-03-04 | 2019-03-04 | Transformer oil paper insulation drying device that wets based on low frequency current heating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798737A (en) * | 2019-03-04 | 2019-05-24 | 广西电网有限责任公司南宁供电局 | A kind of transformer oil paper insulation dampness drying unit based on low-frequency current heating |
| WO2022267802A1 (en) * | 2021-06-24 | 2022-12-29 | 华能伊敏煤电有限责任公司 | Drying device and method for insulation damping treatment of large ampere-turns current transformer |
-
2019
- 2019-03-04 CN CN201920271446.6U patent/CN210861959U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798737A (en) * | 2019-03-04 | 2019-05-24 | 广西电网有限责任公司南宁供电局 | A kind of transformer oil paper insulation dampness drying unit based on low-frequency current heating |
| CN109798737B (en) * | 2019-03-04 | 2024-03-26 | 广西电网有限责任公司南宁供电局 | Transformer oil paper insulation drying device that wets based on low frequency current heating method |
| WO2022267802A1 (en) * | 2021-06-24 | 2022-12-29 | 华能伊敏煤电有限责任公司 | Drying device and method for insulation damping treatment of large ampere-turns current transformer |
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