Mistaken touch prevention type dry-type transformer

Abstract

The invention relates to the technical field of transformers, in particular to a mistaken touch prevention type dry-type transformer which comprises a base, two lower clamping pieces are fixed to the top of the base, an iron core is fixedly installed at the tops of the two lower clamping pieces, a plurality of low-voltage windings are installed on the outer side of the iron core, and high-voltage windings are installed on the outer sides of the low-voltage windings. A plurality of tapping taps are fixedly installed on the outer sides of the high-voltage windings, a gear shifting assembly is arranged on the outer sides of the high-voltage windings and comprises an adjusting rod, and one side of the adjusting rod is rotationally connected with a plurality of connecting shafts. In the invention, the position of the adjusting rod is moved up and down, so that the connecting shaft drives the tapping piece to adjust the position among different gears, and in the process that the connecting shaft drives the tapping piece to switch from one gear to another adjacent gear, the gear on the connecting shaft rotates in a meshed manner on the outer side of the rack, so that the tapping piece rotates by 90 degrees; the multiple tapping pieces can be automatically adjusted and installed to different gear positions, and the gear shifting adjusting efficiency of the transformer is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a dry-type transformer capable of preventing accidental touch. BACKGROUND

[0002] The dry-type transformer is a kind of transformer using air or other non-liquid medium for cooling. The main structure of the dry-type transformer includes a base. An iron core is installed on the top of the base through clamps. A plurality of low-voltage windings are sleeved on the outer side of the iron core. A high-voltage winding is installed on the outer side of the low-voltage winding. A plurality of tapping taps are arranged on the outer side of the high-voltage winding. Among them, a tapping piece is installed between two opposite position tapping taps. The output voltage grade of the transformer is adjusted by adjusting the tapping piece to be installed in the tapping tap at different positions. Most of the existing transformer gear changing adjustment needs to manually adjust the position of the installed tapping piece. During the operation of the transformer, heat is generated in the high-voltage winding and the tapping piece, causing the temperature to rise. Even if the installed tapping piece is adjusted after the transformer is powered off, there will be a high temperature remaining on the high-voltage winding and the tapping piece. The user touching the tapping piece and accidentally touching the high-voltage winding can easily cause a risk of scalding. Moreover, when the transformer is applied to a scene where the load demand voltage often changes, such as different stages of factory electroplating process and heat treatment process requiring different voltages, the user adjusting the position of the tapping piece on multiple high-voltage windings multiple times is not conducive to improving the efficiency of the transformer gear changing adjustment. SUMMARY

[0003] The purpose of the present application is to provide a dry-type transformer capable of preventing accidental touch to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A dry-type transformer capable of preventing accidental touch includes a base. Two lower clamps are fixed on the top of the base. An iron core is fixed on the top of the two lower clamps. A plurality of low-voltage windings are sleeved and installed on the outer side of the iron core. A high-voltage winding is installed on the outer side of the low-voltage winding. A plurality of tapping taps are fixed on the outer side of the high-voltage winding. A plugging assembly is arranged on the outer side of the tapping tap. The plugging assembly can plug a plurality of idle tapping taps. A plurality of tapping pieces are installed between two tapping taps on the outer side of each high-voltage winding. A gear adjusting assembly is arranged between the outer sides of a plurality of high-voltage windings. The gear adjusting assembly can adjust the position of a plurality of tapping pieces to adjust the gear of the transformer. The gear adjusting assembly includes an adjusting rod. A plurality of connecting shafts are rotatably connected to one side of the adjusting rod. The connecting shafts are fixedly connected to the corresponding position tapping pieces. Gears are fixedly connected to the outer side of the connecting shafts. The gears are meshingly connected to the transmission columns fixedly connected to the high-voltage windings. A protective cover is fixed on the outer side of each high-voltage winding. The protective cover is used to protect the tapping piece and the tapping tap.

[0005] Further, mounting bolts are screw-mounted on both ends of the tap piece, the mounting bolts are screw-connected with the tap-out tap, and a plurality of circular holes are formed on the outer side of the protective cover for conveniently screwing the mounting bolts.

[0006] Further, a long slot hole is formed in the middle of the protective cover, and the connecting shaft is slidingly penetrated through the corresponding position long slot hole.

[0007] Further, a plurality of fans are fixedly installed on the outer side of the lower clamping piece, and a plurality of cushion blocks are fixed on the top of the two lower clamping pieces.

[0008] Further, the low-voltage winding and the high-voltage winding are fixedly installed with the cushion blocks, and two upper clamping pieces are fixedly installed on the outer side of the top of the iron core.

[0009] Further, a plurality of high-voltage terminals are fixed on the outer side of one of the upper clamping pieces, and a high-voltage connecting rod is fixedly installed between the high-voltage terminals and the corresponding position high-voltage winding.

[0010] Further, a fixing block is fixedly connected between both ends of the transmission column and the high-voltage winding, both ends of the adjusting rod are fixed with a pointer, and a plurality of scales are formed on the outer side of the protective cover.

[0011] Further, a plurality of arc-shaped notches are formed on the outer side of the transmission column, and a rack is fixed on the outer side of the transmission column and engaged with the gear for transmission.

[0012] Further, a gear plate is fixed on the outer side of the high-voltage winding and fixed with a plurality of tap-out taps, the blocking assembly comprises a guide rail fixedly connected with the gear plate, a sliding block is slidingly connected on the guide rail, and a baffle is fixed on the outer side of the sliding block.

[0013] Further, a return spring is fixed between the sliding block and the guide rail, both ends of the tap piece are fixed with an extrusion ring, and the extrusion ring is extruded with the corresponding position sliding block.

[0014] Compared with the prior art, the beneficial effects of the present application are: 1. By arranging the adjusting rod on the outer side of the plurality of high-voltage windings, rotating the adjusting rod on the inner side of the adjusting rod, fixing the tap piece on the end of the connecting shaft, fixing the gear on the outer side of the connecting shaft, engaging the gear on the outer side of the gear with the transmission column fixedly connected with the high-voltage winding, moving the adjusting rod downward to make the connecting shaft with the plurality of tap pieces move downward, and rotating the connecting shaft with the tap piece by 90 degrees in the process of moving the connecting shaft with the tap piece by one gear distance, so that the two ends of the tap piece can be switched to the outside of different tap-out taps at the same time after the tap piece is moved to the adjacent gear. Then the adjusting rod is pushed to the high-voltage winding direction, the two ends of the plurality of tap pieces are respectively contacted with the corresponding position tap head, finally the installation bolt on the tap piece is screwed and fixed on the tap head by using external electric tools, so that the plurality of tap pieces are automatically adjusted and installed to different gear positions at the same time, which helps to improve the efficiency of the gear adjustment of the transformer, and in the process of adjusting the gear of the transformer, the user's hand touches the tap piece, which effectively prevents the user from installing the tap piece to cause the hand to accidentally touch the high-voltage winding and scald, and helps to improve the safety of the gear adjustment of the transformer.

[0015] 2. By fixing the guide rail outside the tap head, slidingly connecting the sliding block inside the guide rail, fixing the baffle outside the sliding block, the reset spring inside the guide rail naturally elongates to make the sliding block with the baffle shield outside the tap head in the initial state, which can prevent foreign matter from entering the idle tap head, when the tap piece is installed on the tap head, the extrusion ring on the tap piece can extrude the inclined surface of the sliding block to make the sliding block with the baffle away from the tap head, so that the tap head mounting hole is opened for the tap piece installation, which saves the cumbersome steps of manually using the sealing plug to block or open the tap head mounting hole in the prior art, and automatically opens and closes the tap head during the installation of the tap piece. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall structure schematic diagram of the present application; Figure 2 is the internal structure schematic diagram of the protective cover in the present application; Figure 3 is the external structure schematic diagram of the high-voltage winding gear plate in the present application; Figure 4 is a simple diagram of the tap piece adjusting to different gear positions in the present application; Figure 5 is the opening and closing structure schematic diagram of the blocking assembly handle in the present application; Figure 6 is the structure schematic diagram of the adjusting assembly in the present application Figure 1 ; Figure 7 is the structure schematic diagram of the adjusting assembly in the present application Figure 2 ; Figure 8 is the structure schematic diagram of the protective cover in the present application.

[0017] In the figure: 100, base; 110, lower clamp; 111, iron core; 120, fan; 200, high-voltage winding; 210, gear plate; 211, tapping tap; 220, high-voltage connecting rod; 230, upper clamp; 300, blocking assembly; 310, guide rail; 320, sliding block; 330, baffle; 340, return spring; 400, tapping piece; 410, mounting bolt; 420, extrusion ring; 500, gear adjusting assembly; 510, adjusting rod; 511, pointer; 520, connecting shaft; 530, gear; 540, transmission column; 541, rack; 600, protective cover; 610, round hole; 620, long slot hole; 630, scale. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Embodiment one, please refer to Figure 1 Figure 8 In the embodiments of the present application, a mistaken touch prevention type dry-type transformer includes a base 100, the top of the base 100 is fixed with two lower clamps 110, the top of each lower clamp 110 is fixedly installed with an iron core 111, the outer side of the iron core 111 is sleeved and installed with a plurality of low-voltage windings, the outer side of each low-voltage winding is sleeved and installed with a high-voltage winding 200, the outer side of the high-voltage winding 200 is fixedly installed with a plurality of tapping taps 211, the outer side of each tapping tap 211 is arranged with a blocking assembly 300 capable of blocking the tapping tap 211 mounting hole, the outer side of the high-voltage winding 200 is arranged with a tapping piece 400, the tapping piece 400 is fixedly installed with two tapping taps 211 at the corresponding positions, the outer side of the plurality of high-voltage windings 200 is provided with a gear adjusting assembly 500, the gear adjusting assembly 500 adjusts the gear position of the transformer by adjusting the position of the plurality of tapping pieces 400, the gear adjusting assembly 500 includes an adjusting rod 510, a plurality of connecting shafts 520 are rotatably connected to one side of the adjusting rod 510, the connecting shafts 520 are fixedly connected with the tapping pieces 400 at the corresponding positions, the outer side of the connecting shafts 520 is fixedly installed with gears 530, the outer side of the gears 530 is engaged and driven with transmission columns 540 fixedly connected with the high-voltage windings 200, the outer side of the high-voltage windings 200 is fixedly installed with a protective cover 600, and the protective cover 600 is sleeved outside the tapping pieces 400 and the tapping taps 211.

[0020] ​Specifically, by fixing the rack 541 outside the high-voltage winding 200, each tap piece 400 on the high-voltage winding 200 is installed with the adjusting rod 510 away from the high-voltage winding 200 through the connecting shaft 520, when it is necessary to adjust the voltage position of the transformer, the adjusting rod 510 is pulled away from the high-voltage winding 200 to make the connecting shaft 520 with the plurality of tap pieces 400 disengage from the tap tap 211, and then the position of the adjusting rod 510 is moved up and down to make the connecting shaft 520 with the tap piece 400 adjust the position between different positions, in the process of the connecting shaft 520 with the tap piece 400 switching from one position to the adjacent other position, the gear 530 on the connecting shaft 520 meshes and rotates outside the rack 541 to make the connecting shaft 520 with the tap piece 400 rotate 90 degrees, so as to realize that after the tap piece 400 is adjusted to different position, the tap piece 400 can automatically move to the outside of the tap tap 211 which is suitable for the position, and then the adjusting rod 510 is pushed to the high-voltage winding 200 to realize that the plurality of tap pieces 400 are automatically adjusted and installed to different position, which helps to improve the efficiency of the transformer gear adjustment, and in the process of the transformer gear adjustment, the user does not need to touch the tap piece 400, which helps to reduce the risk of the user's hand touching the high-voltage winding 200 and being scalded.

[0021] As shown in Figure 1 and Figure 2 , in the embodiment, a plurality of fans 120 are fixed and installed outside the lower clamping piece 110, the fans 120 are used for air-cooled transformer, a plurality of cushion blocks are fixed on the top of the two lower clamping pieces 110, the low-voltage winding and the high-voltage winding 200 are fixed and installed on the lower clamping piece 110 through the plurality of cushion blocks, two upper clamping pieces 230 are further installed between the top of the plurality of high-voltage windings 200, the two upper clamping pieces 230 are clamped and installed on the top of the iron core 111, a plurality of high-voltage terminals are fixed and installed outside one upper clamping piece 230, the high-voltage terminals are electrically connected with the high-voltage connecting rod 220 on the plurality of high-voltage windings 200 through the cable, this part is a prior art structure component of the dry-type transformer, and the specific working principle of the related components will not be described in detail.

[0022] As shown in Figure 3 and Figure 4 , in the embodiment, the high-voltage winding 200 is fixed with a gear plate 210 outside, a plurality of tap taps 211 are fixed and installed on the gear plate 210, the tap taps 211 on both sides of the gear plate 210 are staggered, wherein the tap tap 211 and the gear plate 210 are both well-known structures on the existing transformer, and the specific structure principle will not be described in detail.

[0023] In the embodiment, refer to Figure 4The two ends of the tap piece 400 can be sequentially fixed with two tap taps 211 in opposite positions from top to bottom, so as to realize gear adjustment of the transformer 1-5. The tap piece 400 in the 2-5 gear positions is shown by a dashed line, indicating that the tap piece 400 can be transferred and installed to different gear positions.

[0024] As shown in Figure 3 and Figure 5 In the embodiment, the blocking assembly 300 includes a guide rail 310 fixedly connected with the gear plate 210. The top of the guide rail 310 is slidingly connected with a sliding block 320. The outer side of the sliding block 320 is fixedly connected with a baffle 330. The sliding block 320 and one end of the guide rail 310 are fixedly connected with a return spring 340. The two ends of the tap piece 400 are fixedly connected with extrusion rings 420. The extrusion rings 420 are extruded and driven with the corresponding sliding blocks 320. The side of the sliding block 320 in contact with the extrusion ring 420 is a bevel.

[0025] In the embodiment, in the initial state, the sliding block 320 is pushed to one end of the guide rail 310 by the elastic force of the return spring 340. At this time, the baffle 330 blocks the outside of the mounting hole of the tap tap 211, which can prevent foreign matters from entering the mounting hole of the tap tap 211. When it is needed to press-fit the tap piece 400 to the tap tap 211, the user pushes the adjusting rod 510 towards the high-voltage winding 200 to make the tap piece 400 extrude the bevel of the sliding block 320 with the extrusion ring 420. The sliding block 320 extrudes the bevel of the sliding block 320 with the extrusion ring 420, and the baffle 330 leaves the tap tap 211. At this time, the return spring 340 is in a compressed state. The initial distance between the tap piece 400 and the tap tap 211 satisfies that the baffle 330 can leave the tap tap 211 in advance when the tap piece 400 moves to the tap tap 211, so that the baffle 330 does not affect the installation of the tap piece 400 to the tap tap 211. After the end of the tap tap 211 is press-fitted to the tap tap 211, the user can insert the drill bit on the electrician tool into the screw hole of the mounting bolt 410, and rotate the mounting bolt 410 with the electric tool, so that the mounting bolt 410 installs the tap piece 400 to the tap tap 211.

[0026] In the embodiment, when the tap 400 needs to be detached from the tap terminal 211 for easy gear shifting, the user first uses a power tool to unscrew the mounting bolt 410 from the tap terminal 211, and then screws one end of the mounting bolt 410 to the tap 400. Then the user pulls the adjusting rod 510 away from the high-voltage winding 200 to move the tap 400 outside the tap terminal 211, which facilitates subsequent movement of the tap 400. After the tap 400 with the compression ring 420 leaves the tap terminal 211, the slider 320 with the baffle 330 moves again to the tap terminal 211 under the elastic force of the return spring 340, so that the baffle 330 blocks the mounting hole of the tap terminal 211 again, and the subsequent manual use of the sealing plug to block the mounting hole of the tap terminal 211 is omitted.

[0027] As shown in Figure 3 , in the embodiment, the two ends of the tap 400 are screwed with the mounting bolt 410, and the mounting bolt 410 is screwed and connected with the tap terminal 211. When the mounting bolt 410 is unscrewed and detached from the tap terminal 211, the end of the mounting bolt 410 can be temporarily screwed and fixed on the tap 400 to prevent the mounting bolt 410 from separating from the tap 400, As shown in Figure 2 , Figure 7 and Figure 8 , in the embodiment, a plurality of circular holes 610 are provided on the outer side of the protective cover 600 for conveniently screwing the mounting bolt 410, and a plurality of arc-shaped notches are provided on the outer side of the transmission column 540. When the tap 400 is adjusted to the appropriate position, the drill bit of the external power tool can be inserted into the end of the mounting bolt 410 through the arc-shaped notches on the transmission column 540 after passing through the circular hole 610, so that the user can drive the mounting bolt 410 to rotate outside the protective cover 600.

[0028] As shown in Figure 2 and Figure 8 , in the embodiment, a long slot hole 620 is provided in the middle of the protective cover 600, and the connecting shaft 520 is slidably penetrated through the corresponding long slot hole 620. When the adjusting rod 510 drives the plurality of connecting shafts 520 to move the tap 400 up and down to adjust the transformer gear position, the connecting shaft 520 can slide up and down in the long slot hole 620.

[0029] In the embodiment, the protective cover 600 is a mesh cover, which is not shown in the figure. The mesh cover structure facilitates heat dissipation of the high-voltage winding 200.

[0030] As shown in Figure 2 and Figure 6As shown, in the embodiment, the two ends of the transmission column 540 are fixedly connected with the fixed blocks between the high-voltage winding 200, so that the transmission column can be installed and fixed outside the high-voltage winding, the two ends of the adjusting rod 510 are fixed with the pointers 511, and the outside of the protective cover 600 is provided with a plurality of scales 630.

[0031] In the embodiment, the adjusting rod 510 is connected with the transmission column 540, and the transmission column 540 is connected with the high-voltage winding 200. Figure 4 The scale 630 shows the positions of 1-5 gears, respectively, the pointer 511 at the end of the adjusting rod 510 can indicate the scales 630 at different positions when the user moves the adjusting rod 510, so that the user can know the position height of the adjusting rod 510 and the moving position of the tapping piece 400 connected with the connecting shaft 520.

[0032] As shown in Figure 2 and Figure 7 , in the embodiment, the outside of the transmission column 540 is fixed with the rack 541 engaged with the gear 530 for transmission, the rack 541 and the gear 530 are in the engaged state, wherein the thickness of the gear 530 is greater than the width of the rack 541, so that the gear 530 can always be in the engaged state with the rack 541 when the adjusting rod 510 moves forward and backward with the gear 530 through the connecting shaft 520, and the connecting shaft 520 can be rolled on the rack 541 with the gear 530 to rotate the tapping piece 400 when the adjusting rod 510 moves up and down, in addition, the rack 541 can drive the gear 530 to rotate 90 degrees with the connecting shaft 520 after the connecting shaft 520 moves from one gear to the adjacent other gear with the tapping piece 400, so that the tapping piece 400 rotates 90 degrees, and the two ends of the tapping piece 400 can move to the outside of the corresponding tapping tap 211.

[0033] In the embodiment, the extrusion ring 420 outside the tapping piece 400 and the connecting shaft 520 fixedly connected with the tapping piece 400 are both processed by using insulating materials, which can effectively prevent the current transmitted to the tapping piece 400 from being transmitted from the positions of the extrusion ring 420 and the connecting shaft 520.

[0034] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims to which they belong.

[0035] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A dry-type transformer designed to prevent accidental contact, characterized in that, include: A base (100) has two lower clamps (110) fixed to its top, and an iron core (111) is fixed to the top of the two lower clamps (110). Multiple low-voltage windings are installed outside the iron core (111). A high-voltage winding (200) is installed on the outside of the low-voltage windings. Multiple taps (211) are fixed on the outside of the high-voltage winding (200). Multiple plugging components (300) are capable of plugging multiple idle taps (211); Multiple taps (400) are installed between two taps (211) at corresponding positions; The gear adjustment assembly (500) can adjust the position of multiple taps to adjust the gear of the transformer. The gear adjustment assembly (500) includes an adjustment rod (510). Multiple connecting shafts (520) are rotatably connected to one side of the adjustment rod (510). The connecting shafts (520) are fixedly connected to the corresponding taps (400). A gear (530) is fixed to the outside of the connecting shaft (520). The gear (530) meshes with a transmission column (540) fixedly connected to the high voltage winding (200). Multiple protective covers (600) are fixed to the corresponding high-voltage windings (200) to protect the taps (400) and taps (211).

2. The anti-accidental contact dry-type transformer according to claim 1, characterized in that, Both ends of the tap (400) are screwed with mounting bolts (410), which are screwed into the tap (211). The outer side of the protective cover (600) is provided with multiple round holes (610) for easy screwing in the mounting bolts (410).

3. The anti-accidental-touch dry-type transformer according to claim 1, characterized in that, The protective cover (600) has a through slot (620) in the middle, and the connecting shaft (520) slides through the slot (620) at the corresponding position.

4. The anti-accidental contact dry-type transformer according to claim 1, characterized in that, Multiple fans (120) are fixedly mounted on the outside of the lower clamp (110), and multiple pads are fixed on the top of the two lower clamps (110).

5. The anti-accidental contact dry-type transformer according to claim 4, characterized in that, Both the low-voltage winding and the high-voltage winding (200) are fixed to the pads, and two upper clamps (230) are fixed to the outer side of the top of the iron core (111).

6. The anti-accidental contact dry-type transformer according to claim 5, characterized in that, Multiple high-voltage terminals are fixed to the outside of one of the upper clamps (230), and a high-voltage connecting rod (220) is installed and fixed between the high-voltage terminals and the corresponding high-voltage windings (200).

7. The anti-accidental-touch dry-type transformer according to claim 1, characterized in that, Both ends of the transmission column (540) are fixedly connected to the high voltage winding (200) with fixing blocks, both ends of the adjusting rod (510) are fixed with pointers (511), and multiple scales (630) are opened on the outside of the protective cover (600).

8. The anti-accidental-touch dry-type transformer according to claim 7, characterized in that, The transmission column (540) has multiple arc-shaped notches through the outer side, and a rack (541) that meshes with the gear (530) is fixed on the outer side of the transmission column (540).

9. The anti-accidental contact dry-type transformer according to claim 1, characterized in that, The high-voltage winding (200) is fixed with a stop plate (210) that is fixed to multiple taps (211) on the outside. The sealing assembly (300) includes a guide rail (310) fixedly connected to the stop plate (210). A slider (320) is slidably connected on the guide rail (310). A baffle (330) is fixed on the outside of the slider (320).

10. The anti-accidental contact dry-type transformer according to claim 9, characterized in that, A return spring (340) is fixed between the slider (320) and the guide rail (310). Both ends of the split piece (400) are fixed with compression rings (420). The compression rings (420) and the corresponding sliders (320) are compressed and driven.

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