CN117373791A

CN117373791A - Safe dry-type transformer

Info

Publication number: CN117373791A
Application number: CN202311577485.6A
Authority: CN
Inventors: 王菲; 王顺; 周正琪; 于爱梅
Original assignee: TAIZHOU HAITIAN ELECTRICAL MANUFACTURING CO LTD
Current assignee: TAIZHOU HAITIAN ELECTRICAL MANUFACTURING CO LTD
Priority date: 2023-11-23
Filing date: 2023-11-23
Publication date: 2024-01-09
Anticipated expiration: 2043-11-23
Also published as: CN117373791B

Abstract

The invention relates to the technical field of transformers, in particular to a safe dry transformer which comprises a transformer body base, clamping pieces are fixedly arranged on the transformer body base, iron cores are arranged between the clamping pieces, matching jacks are respectively arranged at four corners of the transformer body base, locking matching holes are formed in the matching jacks, two lower shielding boxes are arranged between the clamping pieces up and down, the lower shielding boxes are covered with upper shielding boxes, parts such as a protective cover body and the transformer body base are reliably grounded, the internal environment of the transformer is completely isolated from the external environment, electromagnetic clutter and stray magnetic fields inside a shell are also completely isolated from the outside in the electrical aspect, a wiring board enables an electrical connection lead between an internal transformer body and an external lead box to be shielded, a filler box for entering and exiting wires is made of brass or stainless steel materials and is provided with shielding rings, and shielding is also realized at a joint between the inside and the outside of the whole transformer lead box.

Description

Safe dry-type transformer

Technical Field

The invention relates to the technical field of transformers, in particular to a safe dry type transformer.

Background

With the rapid development of industry, the industrial pollution of the power grid caused by clutters is also more serious. These contaminations are mainly generated from momentary switching processes of industrial equipment (e.g. motors, welding machines, etc.) and mechanical equipment, lightning, corona, radio, etc. Although these clutters have little effect on general-purpose electric equipment, they have serious effects on equipment systems such as precision measurement and remote control, digital data processing equipment, information communication systems, computer networks, and the like. And electromagnetic clutter is generated by stray magnetic fields emanating from the spatial electromagnetic wave and the transformer itself. To isolate the noise from the system and equipment, an isolation transformer is necessary, but a common isolation transformer can only perform basic electrical isolation between primary and secondary windings, so that the effect of eliminating the noise is not ideal.

The type of isolation transformer is generally applied to application places such as outdoor places and fireproof places, only a dry type insulation isolation transformer can be used, but the protection level of a housing of the general dry type insulation isolation transformer can not meet the requirements of water resistance and dust resistance, if an oil-immersed type insulation isolation transformer is used, the protection level of the housing can not meet the requirements of fire resistance, in addition, at present, the housing installation of the transformer and the box cover installation of a lead box on the housing are fixed through a plurality of screws, so the mode is simple, but the installation and the removal of the housing and the installation and the removal of the box cover are all required to use tools, so that more time is consumed, and the method is very inconvenient.

Disclosure of Invention

The invention aims to provide a safe dry transformer for solving the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a safe type's dry formula transformer, includes ware body base, fixed mounting has the folder on the ware body base, install the iron core between the folder, four angles of ware body base do not are equipped with the cooperation jack respectively, the locking mating holes has been seted up in the cooperation jack, install two lower shielding boxes from top to bottom between the folder, the upper shield box has covered on the lower shielding box, and all is provided with wiring hole and grounding tube on lower shielding box and the upper shielding box, installs primary winding in the lower shielding box of upper end, installs secondary winding in the lower shielding box of lower extreme, the parcel is twined copper strips respectively on primary winding and the secondary winding, install the ware body protection machanism convenient to install and tear down on the ware body base.

Preferably, the ware body protection machanism convenient to install and remove includes the protection casing body, links up post, first spring, goes up closing cap, the top cap of the cover body, screw thread holds pole, screw thread ring cover and removes the cover body, the both ends symmetry fixed mounting of the protection casing body has the fin, and the four bight punishment in the upper end of the protection casing body are fixed and are provided with protruding scute, set up fixed insert chamber on the protruding scute.

Preferably, the communication hole is formed in the protective cover body, a primary lead box is fixedly arranged on one side of the protective cover body, a secondary lead box is fixedly arranged on the other side of the protective cover body, guide vertical rods are fixedly arranged at the upper ends of the primary lead box and the secondary lead box, a limiting top block is fixedly arranged at the upper ends of the guide vertical rods, a wiring board is fixedly arranged in the primary lead box and the secondary lead box, the other end of the wiring board protrudes out of the protective cover body, a stuffing box shielding ring is fixedly arranged on the inner bottom surfaces of the primary lead box and the secondary lead box, one end of the stuffing box shielding ring is provided with a grounding point, and supporting rods are symmetrically and fixedly arranged at the two ends of the primary lead box and the secondary lead box.

Preferably, the four corners of the lower end of the protective cover body are respectively fixedly provided with a plug bush, the plug bush is plugged in the matched plug hole, a plug through hole is formed in the plug bush, the communication hole penetrates into the plug bush, a communication rod is plugged in the communication hole, the communication rod is fixedly arranged at the lower end of the connecting column, sliding columns are symmetrically and fixedly arranged on two sides of the connecting column, the lower end of the communication rod is fixedly provided with a hinged connecting plate, a pushing hinge rod is hinged on the hinged connecting plate, the pushing hinge rod is positioned in the plug bush, the lower end of the pushing hinge rod is hinged with a fixed plug column, the fixed plug column is plugged in the plug through hole, and one end of the fixed plug column is welded with a first spring.

Preferably, the upper sealing cover is arranged at the upper ends of the primary lead box and the secondary lead box, a guide jack is formed in the upper sealing cover, a guide vertical rod is inserted in the guide jack, a second spring is sleeved on the guide vertical rod, two ends of the upper sealing cover are symmetrically hinged with a first hinged rotating rod, the lower end of the first hinged rotating rod is hinged with a driving upright post, the upper end of the driving upright post is provided with a matched sliding hole, the lower end of the driving upright post is provided with a matched sliding hole, a supporting rod piece is inserted in the matched sliding hole, the lower end of the driving upright post is hinged with a second hinged rotating rod, the lower end of the second hinged rotating rod is hinged with a lower sealing cover, the second hinged rotating rod is positioned at the lower side of the first hinged rotating rod, the lower sealing cover is positioned at the lower side of the upper sealing cover, and sealing gaskets are respectively adhered on the upper sealing cover and the lower sealing cover.

Preferably, the cover body top cover is fixedly arranged at the upper end of the cover body, the cover body top cover is provided with a positioning through hole, sliding columns are symmetrically arranged on two sides of the positioning through hole to penetrate through holes, connecting columns are inserted into the positioning through holes, a first side convex plate frame is fixedly arranged on one side of the cover body top cover, a first through hole is formed in the first side convex plate frame, rotation limiting insertion holes are symmetrically formed in the first side convex plate frames at two ends of the first through hole, the other side of the cover body top cover is fixedly provided with a second side convex plate frame, the second side convex plate frame is provided with a second through hole, hollow sleeve blocks are symmetrically and fixedly arranged on the cover body top cover between the first side convex plate frame and the second side convex plate frame, sliding bearing rods are symmetrically and fixedly arranged at two ends of the hollow sleeve blocks, and threaded bearing rods are arranged on the cover body top cover.

Preferably, the two ends of the threaded support rod are respectively inserted into the first through hole and the second through hole, one end of the threaded support rod is fixedly provided with a fixed disc, a movable jack is arranged on the fixed disc, an elastic connecting piece is welded on the fixed disc, the other end of the elastic connecting piece is welded with a movable ring, the movable ring is sleeved on the threaded support rod, a limited rotation inserting rod is fixedly arranged on the movable ring, the limited rotation inserting rod is inserted into the movable jack, and one end of the limited rotation inserting rod is fixedly provided with an operation panel.

Preferably, the other end of the threaded support rod is fixedly provided with a limiting plate and a limiting ring, a second side convex plate frame is clamped between the limiting plate and the limiting ring, the rotation limiting inserting rod is inserted into the rotation limiting inserting hole when the rotation limiting inserting rod is used for fixing the threaded support rod, and the threaded support rod is sleeved with two threaded ring sleeves in a threaded mode.

Preferably, the two ends of the threaded ring sleeve are symmetrically hinged with a third hinged rotating rod, the threaded directions of the two threaded ring sleeves are opposite, the other end of the third hinged rotating rod is hinged with a movable sleeve body, the upper end of the movable sleeve body is fixedly provided with a hollow sleeve plate, a sliding bearing rod is inserted in the hollow sleeve plate, and inclined lower channels are symmetrically formed in the two sides of the inner part of the movable sleeve body.

Preferably, the extension sleeve is fixedly arranged at one end of the movable sleeve body, a side convex bearing plate is fixedly arranged at one side of the movable sleeve body, a lower inserting driving rod is fixedly arranged on the side convex bearing plate, and the lower inserting driving rod is inserted into the connecting jack.

Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality and has the following advantages:

1. the iron core is formed by winding a plurality of layers of cold-rolled grain-oriented silicon steel sheets, so that no-load loss, noise, magnetic leakage, weight and other parameters of the transformer are reduced, the winding material is made of high-temperature resistant, nonflammable or flame-retardant materials, the transformer has super overload capacity, and can not burn or generate toxic and harmful substances if an electrical failure occurs, so that the transformer is safer and more reliable to use, and the maintenance safety of staff is fully ensured.

2. The winding shielding and leading-out process has no burrs, reliable electrical connection and no damage risk, the lead shielding process adopts metal crepe paper for wrapping, the operation is simple, the wrapping is compact, the grounding is reliable, the conformal shielding is adopted between the primary winding and the secondary winding, the distributed capacitance between the windings can be greatly reduced, the leakage inductance between the windings is increased, common mode clutter and transverse mode clutter are greatly reduced, the conformal shielding is smooth and round all around and has no possibility of overlarge local magnetic field, the safe and stable operation state of the transformer is ensured, and the work of the transformer is more stable.

3. Parts such as the protective cover body and the device body base are reliably grounded, the internal environment and the external environment of the transformer are completely isolated, electromagnetic clutter and stray magnetic fields in the shell are completely isolated from the outside in the electrical aspect, the wiring board enables an electrical connection lead between the internal device body and the external lead box to be shielded, the stuffing box of the inlet and outlet wire is made of brass or stainless steel and is provided with a shielding ring, and shielding is also realized at a joint between the inside and the outside of the whole transformer lead box.

4. The protective cover body and the cover body top cover are convenient to assemble and disassemble, the quick assembly and disassembly of the protective cover body and the cover body top cover can be realized only by rotating the threaded bearing rod, the maintenance work of the transformer is convenient to carry out, the operation is simple, in addition, the opening and closing of the lead box are controlled by the threaded bearing rod, the lead box is not required to be fixed by using a screw, the quick opening and closing can be realized, and the wiring work is convenient to carry out.

Drawings

Fig. 1 is a schematic view of a transformer in a first view assembled as a whole.

Fig. 2 is a schematic diagram of a second view of the transformer assembled as a whole.

Fig. 3 is a schematic view of a first view structure of a base of the device.

Fig. 4 is a schematic view of a second view structure of the base of the device.

Fig. 5 is an exploded view of the assembly of the upper and lower shield cans.

Fig. 6 is a schematic view of the first view of the assembly of the shield body and the adapter post.

Fig. 7 is a schematic view of a second view of the assembly of the shield body and the adapter post.

FIG. 8 is a schematic view of the assembly of the upper closure, lower closure, threaded collar and moving collar body.

Fig. 9 is a schematic structural view of the cover top.

Fig. 10 is a schematic view of the assembly of a threaded shank.

Fig. 11 is a schematic structural view of the mobile sleeve.

In the figure: 1. a body base; 11. matching with the jack; 12. locking the mating hole; 13. a clamping piece; 14. an iron core; 2. a lower shield case; 21. an upper shielding box; 22. a wiring hole; 23. a grounding tube; 24. a primary winding; 25. a secondary winding; 26. copper strips; 3. a protective cover body; 31. a heat sink; 32. protruding corner plates; 33. a fixed insertion cavity; 34. a communication hole; 35. a primary lead box; 36. a secondary lead box; 37. a guide upright rod; 371. a limiting top block; 372. a wiring board; 373. a stuffing box shielding ring; 374. a grounding point; 375. a support rod; 38. a plug bush; 39. inserting through holes; 4. a connecting column; 41. a sliding column; 42. a communication rod; 43. hinging the connecting plates; 44. pushing the hinge rod; 45. fixing the inserted column; 46. a first spring; 5. an upper closing cap; 51. a guide jack; 52. a second spring; 53. a first hinge lever; 54. driving the upright post; 55. a connection jack; 56. matching with the sliding hole; 561. a second hinged rotating rod; 57. a lower closing cap; 58. a sealing gasket; 6. a cover body top cover; 61. positioning the through hole; 62. the sliding column passes through the hole; 63. a first side ledge; 64. a first through hole; 65. rotation limiting jacks; 66. a second side ledge; 67. a second through hole; 68. a hollow sleeve block; 69. sliding the bearing rod; 7. a threaded bearing rod; 71. a fixed plate; 72. a movable jack; 73. an elastic connecting piece; 74. a movable ring; 75. rotation limiting inserted link; 76. an operation panel; 77. a limiting plate; 78. a limiting ring; 8. a threaded ring sleeve; 81. a third hinged rotating rod; 82. moving the sleeve body; 83. a hollow sleeve plate; 84. a diagonal down channel; 85. an extension sleeve; 86. a side convex bearing plate; 87. the driving rod is inserted downwards.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 11, the present invention provides a technical solution:

a safe dry transformer comprises a body base 1, clamping pieces 13 are fixedly arranged on the body base 1, iron cores 14 are arranged between the clamping pieces 13, matching jacks 11 are respectively arranged at four corners of the body base 1, locking matching holes 12 are formed in the matching jacks 11, two lower shielding boxes 2 are arranged up and down between the clamping pieces 13, an upper shielding box 21 is covered on the lower shielding box 2, wiring holes 22 and grounding pipes 23 are respectively arranged on the lower shielding box 2 and the upper shielding box 21, primary windings 24 are arranged in the lower shielding box 2 at the upper end, secondary windings 25 are arranged in the lower shielding box 2 at the lower end, copper strips 26 are respectively wrapped and wound on the primary windings 24 and the secondary windings 25, the lower shielding box 2 and the upper shielding box 21 are in a reverse shape and pass through the iron cores 14, the iron cores 14 are formed by winding a plurality of layers of cold-rolled grain oriented silicon steel sheets, selecting a material with the magnetic permeability suddenly reduced under the high-frequency clutter component, gradually increasing the width of the innermost iron core 14 towards the middle iron core 14 from an equilateral trapezoid, winding the middle iron core 14 from the width to the outermost layer, gradually decreasing the width of the middle iron core 14 from the equilateral trapezoid, finally enabling the cross section of the whole plane rolled iron core 14 to be polygonal, for the iron in the winding process, the strip of each rolled iron core 14 is an equilateral trapezoid, each level polygonal cross section of the rolled iron core 14 is an equilateral trapezoid, for the connection of any two equilateral trapezoid strips in the polygonal cross section, the width of the bottom equilateral trapezoid tail is equal to the width of the upper equilateral trapezoid lifting material, sequentially winding the whole iron core 14 to be grounded, in addition, the primary winding 24 and the secondary winding 25 are wound by polyimide enameled copper wires with heat resistance exceeding the H level, the skeleton is processed by a heat-resistant H-level modified diphenyl ether board, a layer of shielding is built in the winding skeleton of a primary winding 24 and a secondary winding 25, one point is led out for grounding, after half-lap winding of aramid paper is used for one layer, the primary winding 24 and the secondary winding 25 are wound layer by layer according to the graph, the cross sections of the primary winding 24 and the secondary winding 25 are rectangular, insulation wrapping of leads is carried out, after the winding according to the graph is completed, half-lap winding of aramid paper is used for one layer, one point is led out for grounding, after the winding of the primary winding 24 and the secondary winding 25 is completed, the whole rectangular cross section is half-lap wound for one layer by aramid paper, the aramid paper is combined with a plurality of copper strips 26 with the thickness of 0.1mm, the grounding leads are not welded and led out by adopting a traditional soft-braiding copper strip welding, and a ninety-degree bending and led out process of the copper strips 26 is adopted, the copper strips 26 with the length of 0.1mm are reserved, after the shielding is wrapped around one layer, the reserved parts are aligned and respectively bent by ninety degrees, the outer half-folded parts of the lead-out parts are wrapped with a plurality of layers of aramid paper, and finally are converged into a grounding part, the grounding lead wire is reserved for the enameled copper wire of the winding itself by a certain length, the terminal is welded at the end part and fixed on the wiring board 372, when the grounding lead wire is led out, the outer half-folded parts are wrapped with a plurality of layers of aramid paper, then the outer half-folded parts are wrapped with a layer of metal crepe paper, one end of the metal crepe paper is connected with the similar grounding part, in addition, the lower shielding box 2 and the upper shielding box 21 are made of copper plates, bending lines are in an arc shape, the periphery is in flanging bending treatment, the lap joint part is well protected and is prevented from being lapped into a short circuit ring, and the body protecting mechanism convenient to mount and dismount is arranged on the body base 1.

The utility model provides a ware body protection machanism convenient to install and remove includes protection casing body 3, linking post 4, first spring 46, go up closing cap 5, the protection casing body top cap 6, screw thread stock 7, screw thread ring cover 8 and remove the cover body 82, and the both ends symmetry fixed mounting of protection casing body 3 has fin 31, and the four bight punishment in upper end of protection casing body 3 do not are fixed and are provided with protruding scute 32, have seted up fixed insert chamber 33 on the protruding scute 32, and protection casing body 3 is by the steel sheet preparation, and fin 31 adopts 08AL cold rolled steel sheet.

The shield body 3 is provided with the communication hole 34, one side of the shield body 3 is fixedly provided with the primary lead box 35, the other side is fixedly provided with the secondary lead box 36, the upper ends of the primary lead box 35 and the secondary lead box 36 are fixedly provided with the guide upright rod 37, the upper ends of the guide upright rod 37 are fixedly provided with the limit jacking block 371, the inside of the primary lead box 35 and the secondary lead box 36 is fixedly provided with the wiring board 372, the wiring board 372 is made of steel plates, the other end of the wiring board 372 protrudes out of the shield body 3, the inner bottom surfaces of the primary lead box 35 and the secondary lead box 36 are fixedly provided with the stuffing box shielding ring 373, one ends of the stuffing box shielding ring 373 are provided with the grounding points 374, and two ends of the primary lead box 35 and the secondary lead box 36 are symmetrically and fixedly provided with the supporting rods 375, in addition, the stuffing box shielding ring 373 is made of brass or stainless steel.

The lower extreme four angles of protection casing body 3 are respectively fixed and are provided with plug bush 38, plug bush 38 pegging graft in mating jack 11, and the last grafting through-hole 39 that has seted up of plug bush 38, the intercommunicating pore 34 runs through in the plug bush 38, and peg graft in the intercommunicating pore 34 and have the communicating rod 42, the communicating rod 42 is fixed to be set up in the lower extreme of linking post 4, the bilateral symmetry of linking post 4 is fixed and is provided with sliding column 41, and the lower extreme of communicating rod 42 is fixed to be provided with articulated link plate 43, articulated on the articulated link plate 43 have promote hinge rod 44, promote hinge rod 44 and be in plug bush 38, and the lower extreme of promote hinge rod 44 articulates there is fixed spliced pole 45, fixed spliced pole 45 pegging graft in grafting through-hole 39, and the one end welding of fixed spliced pole 45 has first spring 46, the other end welding of first spring 46 is on the inner wall of plug bush 38.

The upper sealing cover 5 is installed at the upper ends of the primary lead box 35 and the secondary lead box 36, a guide jack 51 is formed in the upper sealing cover 5, a guide upright rod 37 is inserted in the guide jack 51, a second spring 52 is sleeved on the guide upright rod 37, two ends of the upper sealing cover 5 are symmetrically hinged with a first hinged rotating rod 53, the lower end of the first hinged rotating rod 53 is hinged with a driving upright post 54, the upper end of the driving upright post 54 is provided with a matched sliding hole 56, the lower end of the driving upright post 54 is provided with a matched sliding hole 56, a supporting rod 375 is inserted in the matched sliding hole 56, the lower end of the driving upright post 54 is hinged with a second hinged rotating rod 561, the lower end of the second hinged rotating rod 561 is hinged with a lower sealing cover 57, the second hinged rotating rod 561 is positioned at the lower side of the upper sealing cover 5, sealing gaskets 58 are respectively adhered to the upper sealing cover 5 and the lower sealing cover 57, in addition, two ends of the second spring 52, which are installed on the primary lead box 35, the upper lead box 5 and the secondary lead box 36 are respectively welded on the upper sealing cover 5 and the secondary lead box 36.

The cover body top cover 6 is fixedly arranged at the upper end of the cover body 3, the cover body top cover 6 is provided with a positioning through hole 61, two sides of the positioning through hole 61 are symmetrically provided with sliding column penetrating holes 62, the positioning through hole 61 is inserted with a connecting column 4, one side of the cover body top cover 6 is fixedly provided with a first side convex plate frame 63, the first side convex plate frame 63 is provided with a first through hole 64, the first side convex plate frames 63 at two ends of the first through hole 64 are symmetrically provided with rotation limiting insertion holes 65, the other side of the cover body top cover 6 is fixedly provided with a second side convex plate frame 66, the second side convex plate frame 66 is provided with a second through hole 67, the cover body top cover 6 between the first side convex plate frame 63 and the second side convex plate frame 66 is symmetrically fixedly provided with a hollow sleeve block 68, two ends of the hollow sleeve block 68 are symmetrically fixedly provided with sliding bearing rods 69, and the cover body top cover 6 is provided with threaded bearing rods 7.

Two ends of the threaded bearing rod 7 are respectively inserted into the first through hole 64 and the second through hole 67, one end of the threaded bearing rod 7 is fixedly provided with a fixed disc 71, a movable insertion hole 72 is formed in the fixed disc 71, an elastic connecting piece 73 is welded on the fixed disc 71, a movable ring 74 is welded on the other end of the elastic connecting piece 73, the movable ring 74 is sleeved on the threaded bearing rod 7, a limited rotation inserting rod 75 is fixedly arranged on the movable ring 74, the limited rotation inserting rod 75 is inserted into the movable insertion hole 72, and an operation hand plate 76 is fixedly arranged at one end of the limited rotation inserting rod 75.

The other end of the threaded support rod 7 is fixedly provided with a limiting plate 77 and a limiting ring 78, a second side convex plate frame 66 is clamped between the limiting plate 77 and the limiting ring 78, two sides of the second side convex plate frame 66 are respectively contacted with the limiting plate 77 and the limiting ring 78, the rotation limiting inserting rod 75 is inserted into the rotation limiting inserting hole 65 when fixing the threaded support rod 7, and two threaded ring sleeves 8 are sleeved on the threaded support rod 7 in a threaded mode.

The both ends symmetry of screw thread ring cover 8 are articulated to have the third and are articulated bull stick 81, and the screw thread opposite direction of two screw thread ring covers 8, and another head of third is articulated to have and is moved the cover body 82, and the upper end of removing the cover body 82 is fixed to be provided with hollow sleeve plate 83, has pegged graft in the hollow sleeve plate 83 and has had slide bearing rod 69, and the inside bilateral symmetry of removing the cover body 82 has been offered oblique lower channel 84, and the width of oblique lower channel 84 equals with the diameter of slip post 41.

An extension sleeve 85 is fixedly arranged at one end of the movable sleeve 82, a side convex bearing plate 86 is fixedly arranged at one side of the movable sleeve 82, a lower insertion driving rod 87 is fixedly arranged on the side convex bearing plate 86, the lower insertion driving rod 87 is inserted into the connection jack 55, in addition, when the protective cover body 3 is fixedly connected with the cover body top cover 6, the extension sleeve 85 is inserted into the fixed insertion cavity 33, and the lower end face of the movable sleeve 82 is contacted with the upper end face of the cover body top cover 6.

The combined action of the lower shielding box 2, the upper shielding box 21 and the copper strips 26 can play a good shielding role on the primary winding 24 and the secondary winding 25, when the protective cover body 3 and the protective cover body top cover 6 are installed, the plugging sleeve 38 on the protective cover body 3 is plugged into the matched plug hole 11 to realize the positioning of the protective cover body 3, then the protective cover body top cover 6 is covered at the upper end of the protective cover body 3, the sliding column 41 passes through the sliding column passing hole 62 to be positioned at the upper side of the protective cover body top cover 6 and is positioned in the movable sleeve 82, the primary lead box 35 and the secondary lead box 36 are both in an open state at the moment, the wiring work is convenient to carry out, after the wiring work is finished, the operation hand plate 76 is pulled at the moment to drive the movable ring 74 to move, the rotation limiting plug rod 75 is led to exit the rotation limiting plug hole 65, then the screw socket rod 7 can be rotated to drive the two screw ring sleeves 8 to move oppositely under the action of screw threads, so that the movable sleeve 82 is driven to move away from the hollow sleeve block 68 under the action of the third hinge rotating rod 81, the sliding column 41 is driven to enter the inclined lower channel 84, the connecting column 4 is driven to move downwards under the action of the inclined lower channel 84, the fixed inserting column 45 is pushed to be inserted into the locking matching hole 12 under the action of the pushing hinge rod 44, the fixing of the protective cover body 3 is realized, the extending sleeve 85 is also inserted into the fixed inserting cavity 33, the fixed connection between the cover body top cover 6 and the protective cover body 3 is realized, the sealing of the positioning through hole 61 is realized, namely, the movable sleeve 82 covers the positioning through hole 61 at the moment, the movable sleeve 82 drives the driving upright column 54 to move under the action of the lower inserting driving rod 87 in the moving process, and then will drive under the effect of first articulated bull stick 53 and second articulated bull stick 561 and go up closing cap 5 and reciprocate, down closing cap 57 upwards removes, just so make both close together, realize the closure of primary lead box 35 and secondary lead box 36 department, and convenience very, then release the operation palm 76 makes limit change the bayonet catch 75 insert in limit change jack 65 again and can realize the fixed of screw thread stock 7, and then accomplish the installation, when needs opening primary lead box 35 and secondary lead box 36 or dismantle protection casing 3 and the cover body top cap 6 can, easy operation is swift only need reverse rotation screw thread stock 7.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a safe type's dry formula transformer, includes ware body base (1), fixed mounting has folder (13) on ware body base (1), install iron core (14), its characterized in that between folder (13): the device comprises a device body base (1), wherein four corners of the device body base are respectively provided with a matching jack (11), locking matching holes (12) are formed in the matching jacks (11), two lower shielding boxes (2) are arranged between clamping pieces (13) in an up-down mode, an upper shielding box (21) is covered on the lower shielding boxes (2), wiring holes (22) and grounding pipes (23) are formed in the lower shielding boxes (2) and the upper shielding boxes (21), primary windings (24) are arranged in the lower shielding boxes (2) at the upper end, secondary windings (25) are arranged in the lower shielding boxes (2) at the lower end, copper strips (26) are wrapped and wound on the primary windings (24) and the secondary windings (25) respectively, and a device body protection mechanism convenient to install and detach is arranged on the device body base (1).

2. A dry transformer of the safety type according to claim 1, wherein: the utility model provides a ware body protection machanism convenient to install and remove includes protection casing body (3), linking post (4), first spring (46), goes up closing cap (5), cover body top cap (6), screw thread carrier bar (7), screw thread ring cover (8) and removes the cover body (82), the both ends symmetry fixed mounting of protection casing body (3) has fin (31), and the four bight punishment of upper end of protection casing body (3) are fixed and are provided with protruding scute (32), fixed insert chamber (33) have been seted up on protruding scute (32).

3. A dry transformer of the safety type as claimed in claim 2, wherein: the novel protective cover is characterized in that the protective cover body (3) is provided with a communication hole (34), one side of the protective cover body (3) is fixedly provided with a primary lead box (35), the other side of the protective cover body is fixedly provided with a secondary lead box (36), the upper ends of the primary lead box (35) and the secondary lead box (36) are fixedly provided with guide vertical rods (37), the upper ends of the guide vertical rods (37) are fixedly provided with limiting top blocks (371), the interiors of the primary lead box (35) and the secondary lead box (36) are fixedly provided with wiring boards (372), the other ends of the wiring boards (372) are protruded inside the protective cover body (3), the inner bottom surfaces of the primary lead box (35) and the secondary lead box (36) are fixedly provided with stuffing box shielding rings (373), one ends of the stuffing box shielding rings (373) are provided with grounding points (374), and the two ends of the primary lead box (35) and the secondary lead box (36) are symmetrically and fixedly provided with supporting rods (375).

4. A dry transformer of the safety type according to claim 3, wherein: the utility model discloses a protection casing, including protection casing body (3), including four angles of lower extreme, respectively fixed plug bush (38), plug bush (38) are pegged graft in cooperation jack (11), and have seted up grafting through-hole (39) on plug bush (38), in connecting hole (34) run through plug bush (38), and peg graft in connecting hole (34) have communication pole (42), the fixed lower extreme that sets up in linking post (4) of communication pole (42), the both sides symmetry of linking post (4) is fixed and is provided with sliding column (41), and the fixed articulated link plate (43) that are provided with of lower extreme of communication pole (42), articulated on articulated link plate (43) have promotion hinge rod (44), promotion hinge rod (44) are in plug bush (38), and the lower extreme of promotion hinge rod (44) articulates has fixed spliced pole (45), fixed spliced pole (45) are pegged graft in grafting through-hole (39), and the one end welding of fixed spliced pole (45) has first spring (46).

5. A dry transformer of the safety type as claimed in claim 4, wherein: the upper sealing cover (5) is arranged at the upper ends of the primary lead box (35) and the secondary lead box (36), the upper sealing cover (5) is provided with a guide jack (51), the guide jack (51) is internally inserted with a guide vertical rod (37), the guide vertical rod (37) is sleeved with a second spring (52), the two ends of the upper sealing cover (5) are symmetrically hinged with a first hinging rotating rod (53), the lower end of the first hinging rotating rod (53) is hinged with a driving upright post (54), the upper end of the driving upright post (54) is provided with a matched sliding hole (56), the lower end of the driving upright post (54) is provided with a matched sliding hole (56), the matched sliding hole (56) is internally inserted with a supporting rod piece (375), the lower end of the driving upright post (54) is hinged with a second hinging rotating rod (561), the lower end of the second hinging rotating rod (561) is hinged with a lower sealing cover (57), the second hinging rotating rod (561) is positioned on the lower side of the first hinging rotating rod (53), the lower sealing cover (57) is positioned on the lower side of the upper sealing cover (5), and the upper sealing cover (58) and the lower sealing cover (5) are respectively adhered.

6. A dry transformer of the safety type according to claim 5, wherein: cover body top cap (6) fixed mounting has offered location through-hole (61) in the upper end of the protection casing body (3), and cover body top cap (6) on, sliding column passes hole (62) have been seted up to the bilateral symmetry of location through-hole (61), and peg graft in location through-hole (61) have link up post (4), cover body top cap (6) one side is fixed to be provided with first side boss frame (63), first through-hole (64) have been seted up on first side boss frame (63), limit change jack (65) have been seted up to the symmetry on first side boss frame (63) at first through-hole (64) both ends, and cover body top cap (6) opposite side is fixed to be provided with second side boss frame (66), second through-hole (67) have been seted up on second side boss frame (66), cover body top cap (6) between first side boss frame (63) and the second side boss frame is fixed to be provided with hollow cover piece (68), hollow cover piece (68) both ends symmetry are fixed to be provided with slide support (69), cover body (6) are installed screw thread on installing.

7. A dry transformer of the safety type according to claim 6, wherein: the two ends of the threaded support rod (7) are respectively inserted into the first through hole (64) and the second through hole (67), a fixed disc (71) is fixedly arranged at one end of the threaded support rod (7), a movable insertion hole (72) is formed in the fixed disc (71), an elastic connecting piece (73) is welded on the fixed disc (71), a movable ring (74) is welded at the other end of the elastic connecting piece (73), the movable ring (74) is sleeved on the threaded support rod (7), a limited rotation insertion rod (75) is fixedly arranged on the movable ring (74), the limited rotation insertion rod (75) is inserted into the movable insertion hole (72), and an operation hand plate (76) is fixedly arranged at one end of the limited rotation insertion rod (75).

8. A dry transformer of the safety type as claimed in claim 7, wherein: the other end of the threaded support rod (7) is fixedly provided with a limiting plate (77) and a limiting ring (78), a second side convex plate frame (66) is clamped between the limiting plate (77) and the limiting ring (78), the threaded support rod (7) is inserted into the threaded insertion hole (65) when being fixed by the limiting insertion rod (75), and two threaded ring sleeves (8) are sleeved on the threaded support rod (7) in a threaded mode.

9. A dry transformer of the safety type as claimed in claim 8, wherein: the two ends of the threaded ring sleeve (8) are symmetrically hinged with a third hinged rotating rod (81), the threaded directions of the two threaded ring sleeves (8) are opposite, the other end of the third hinged rotating rod (81) is hinged with a movable sleeve body (82), the upper end of the movable sleeve body (82) is fixedly provided with a hollow sleeve plate (83), the hollow sleeve plate (83) is inserted with a sliding bearing rod (69), and the two sides of the inner part of the movable sleeve body (82) are symmetrically provided with inclined lower channels (84).

10. A dry transformer of the safety type as claimed in claim 9, wherein: one end of the movable sleeve body (82) is fixedly provided with an extension sleeve (85), one side of the movable sleeve body (82) is fixedly provided with a side convex bearing plate (86), a lower inserting driving rod (87) is fixedly arranged on the side convex bearing plate (86), and the lower inserting driving rod (87) is inserted into the connecting jack (55).