CN109346299A - A kind of low noise level transformer - Google Patents

Abstract

The present invention provides a kind of low noise level transformer, low noise level transformer includes amorphous alloy, coil, fastener, frame and transformer body；Fastener is divided into fastener, lower fastener and side fastener, it further include noise reducing mechanism in transformer, noise reducing mechanism includes fixed beam and damping, damping is divided into the first damping and the second damping, second damping includes bottom plate and lower damper, is connected between bottom plate and transformer body by lower damper；Lower damper is in lower fastener bottom quantity N >=3, and base of frame central position is equipped with lower damper always, and damper is centrosymmetric distribution under the lower damper opposite central of residue.The present invention using multiple damping, transmit to greatest extent by the upper vibration weakened between amorphous alloy and transformer body, effectively increases the resistance to shock of noise reducing mechanism；And damping assembly is simple.

Description

A kind of low noise level transformer

Technical field

The present invention relates to technical field of transformer equipment more particularly to a kind of low noise level transformers.

Background technique

With the fast development of electric power network, dry-type transformer is electric energy transfer device relatively conventional in electric power network, When transformer uses in wet condition for a long time, the insulating properties of transformer interior loop winding can decline, and to a certain extent can Stability in use and safety in utilization are influenced, while transformer can generate vibration at work, environment can be generated certain Pollution, while transformer vibration for a long time also will affect the service life of transformer, applicability and practicability are restricted.

Such as Chinese patent CN203013483U discloses a kind of efficient squelch type amorphous dry-type transformer, the transformer It mainly include high-tension coil, low-voltage coil, amorphous alloy iron core, iron-core draw-board, coil insulation pressing, iron core fastener, silicon rubber Gum forming part and transformer base, which is characterized in that with silicon rubber formed part width between the high-tension coil and low-voltage coil It is positioned to support, the high-tension coil, low-voltage coil carry out axial compression by coil insulation pressing and be set in amorphous alloy On core, the amorphous alloy iron core is cemented on iron-core draw-board by epoxy resin makes an entirety, and the iron core is tight Firmware is mounted on transformer base by fixed device.The invention increases transformer and bears width to electrodynamic ability, disappears In addition to the transformer load noise as caused by operating current in normal operation, and improve amorphous alloy epoxy dry type The reliability and safety of transformer, but this is positioned using the silicon rubber formed part width of novel middle use to support, vibration resistance Can be weaker, therefore its anti-acoustic capability is faint in high load situations.In another example Chinese patent CN205069310U disclosure of the invention A kind of noise reducing type amorphous alloy dry-type transformer, including amorphous core, coil and fastener, the amorphous core include upper iron Yoke, lower yoke and the core limb being arranged between the upper yoke and lower yoke, the coil are socketed in the amorphous core On core limb, the fastener is in the body structure of inner hollow, and the amorphous core and coil are located in the fastener, Filled polymer foamed material between amorphous core and fastener and between amorphous core and coil, utilizes polymer foaming material The buffering of material can effectively reduce the vibration that transformer body accordingly occurs by the electric power that coil generates, and can have The extra-stress for avoiding amorphous alloy dry-type transformer from generating by vibration of effect causes no-load loss to increase the production with iron core chips It is raw, while can accordingly reduce the noise of transformer；The invention is carried out between iron core and fastener using polymeric foamable material Buffering to reduce vibration transmitting, but the bolster usually has the physical property of foamed material to determine, so the largely upper limit The buffer capacity of the bolster of system, the resistance to shock of the bolster is unsatisfactory under high load or high-power transformer.

Summary of the invention

To overcome the problems, such as that resistance to shock existing in the prior art is low, the present invention provides a kind of low noise level transformers.

The present invention provides a kind of low noise level transformers, including amorphous alloy iron core, fastener, frame, transformer body And noise reducing mechanism, it is characterised in that: the frame is located in the transformer body, is used to support whole low noise level transformer； The amorphous alloy iron core includes upper yoke, lower yoke and iron core column, and the iron core column is arranged in the upper yoke and lower yoke Between；The fastener is divided into fastener, lower fastener and side fastener, and the upper fastener is fixed on the upper yoke Side, the lower fastener are fixed below the lower yoke, and the side fastener is set at left and right sides of the amorphous alloy iron core； The noise reducing mechanism includes fixed beam and damping, and the fixed beam is set to the upper fastener sidewalls of transformer, the fixation Upper fastener and side fastener are connected as overall structure by beam.

On this basis, the fixed beam is made of long square plate A and long square plate B, the center position of long square plate A with it is rectangular Plate B center position is welded and fixed, and the both ends on the long square plate A axial direction are all provided with jagged A, the open end the notch A Towards the bottom long square plate A, notch A width and upper fastener consistency of thickness.

On this basis, the long square plate B axle is again provided with notch B to the both ends in direction, and notch B open section is towards rectangular The bottom plate B, notch B width and side fastener consistency of thickness, long square plate B is buckled in side fastener tip by notch B, described to lack Mouth A and notch B is equipped with rubber layer with upper fastener contact portion respectively.

It on this basis, further include damping, the damping is mounted on the transformer bottom and top；It is described Damping is divided into the first damping and the second damping, and first damping is set to upper fastener tip, described Second damping is set between base of frame and transformer body；

On this basis, second damping includes bottom plate and lower damper, and the bottom plate is set to framework bottom Portion is connected between bottom plate and transformer body by lower damper, and bottom plate length is 15-20cm, on bottom plate Equipped with damping room, damping sets damper in room；The lower damper is in bottom plate bottom quantity N >=3, and in base of frame Centre is equipped with lower damper at position always, and damper is centrosymmetric distribution under the lower damper opposite central of residue.

On this basis, damper is 5 in base of frame quantity.

On this basis, the lower damper includes connecting rod and pressure spring, and the pressure spring connects at the top of connecting rod and damping Ceiling portion；The connecting rod is in I-shaped connecting rod, and the connecting rod bottom is connect by fixing piece with transformer body, is connected It is located at damping chamber interior at the top of bar.

On this basis, the damping room is in rectangular channel, and rectangular channel right angle is with arc transition, four sides of connecting rod top It is the arcwall face of identical radian measure, the arcwall face is towards connecting rod top center；The right angle of the damping room is distinguished It is provided with sliding slot I, is equipped with idler wheel in sliding slot I；Four corners are equipped with relatively sliding with respect to damping room square position at the top of the connecting rod Slot II, the sliding slot II are arc surface；The connecting rod top thickness is more than or equal to the 3/2 of roller radius.

On this basis, damping room side wall be equipped with rubber pad, the rubber pad two sides respectively with damping room side wall, Connecting rod top curve face contact.

On this basis, the pressure spring is distributed in damping ceiling portion in positive triangle, and pressure spring height is at least damping room height 1/2.

Compared with prior art, the beneficial effects of the present invention are:

(1) in the present invention transformer by fixed beam and damping carry out multiple damping to greatest extent it is upper weaken amorphous alloy with Vibration transmitting between transformer body, to weaken frame vibration, reduces the generation of noise, effectively increases noise reducing mechanism Resistance to shock；Damping assembly simultaneously is simple, does not increase the assembly intensity of technical staff, while the lower damper distribution is set Set the efficient cushioning effect that ensure that the second damping.

(2) in the present invention lower damper in base of frame quantity N >=3, wherein small number of damper its to transformer The damping effect of bottom is faint, while pressure suffered by single damper is excessive, and damper easy to damage shortens the working life； And although greater number of damper has excellent cushioning effect, but will increase production cost；Lower damper is in 1 bottom of frame Quantity is 5, which ensure that the optimal cushioning effect of the second damping and minimum production cost most Good comprehensive matching.

(3) heretofore described damping room and connecting rod top pass through relatively sliding between sliding slot I, idler wheel and sliding slot II three It is dynamic, guarantee to ensure that connecting rod slides up and down in damping room always in being in rolling contact between at the top of damping room and connecting rod Have low friction, while effectively preventing amorphous alloy vibration due to damping room sidewall rubber again and passing through connecting rod and damping room Side wall contact transmitting.

(4) heretofore described bottom plate bottom surface is connected with transformer base by resilient cushion, passes through pressure spring and damping The setting of pad obtains dual vibration isolation on transformer axial direction, effectively reduces mechanical oscillation on transformer axial direction, effectively Transformer vibration and noise is alleviated to the adverse effect of ambient enviroment.

Detailed description of the invention

Fig. 1 is low noise level transformer overall schematic；

Fig. 2 is fixed beam and the first damping connection schematic diagram；

Fig. 3 is the first damping structural schematic diagram；

Fig. 4 is bottom plate schematic bottom view；

Fig. 5 is lower damper schematic diagram；

Fig. 6 is connecting rod schematic top plan view；

Fig. 7 is fixed beam schematic three dimensional views in embodiment 2.

It is marked on it in conjunction with attached drawing:

1, frame, 2, upper fastener, 3, side fastener, 4, bottom plate, 41, damping room, 42, rubber pad, 43, idler wheel, 44, company Extension bar, 45, pressure spring, 5, transformer body, 6, lower fastener, the 7, first damping, 711, resilient cushion, 712, spring, 713, Damping piece, 714, clamping apparatus, 8, fixed beam, 81, long square plate A, 82, long square plate B, 83, notch A, 84, notch B.

Specific embodiment

Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein Specific examples are only used to explain the present invention, is not intended to limit the present invention.

Embodiment 1

A kind of low noise level transformer is present embodiments provided, as shown in Figure 1, the low noise level transformer includes amorphous alloy, line Circle, fastener, frame 1 and transformer body 5；Amorphous alloy dry-type transformer uses three five-limb transformers, and frame 1 is located at In transformer body 5, frame 1 supports whole amorphous alloy dry-type transformer；Amorphous alloy includes upper yoke, lower yoke and setting Iron core column between upper yoke and lower yoke, coil are sheathed on iron core column, clamp amorphous alloy, fastener point by fastener For upper fastener 2, lower fastener 6 and side fastener 3, upper fastener 2 is fixed on above upper yoke by nail pressing and rubber, lower tight Firmware 6 is equally fixed below lower yoke by nail pressing and rubber surely, fixes amorphous alloy on axis of winding direction；Side fastening Part 3 is set at left and right sides of amorphous alloy, is reinforced to the winding vertical direction of transformer；To reduce the noise reduction of transformer Can, it further include noise reducing mechanism in the transformer, the noise reducing mechanism includes fixed beam 8 and damping, and the fixed beam 8 is set In 2 side wall of upper fastener of transformer, fixed beam 8 is using cross fixed beam and without skirt, by fixed beam 8 by upper fastener 2 are connected as overall structure with side fastener 3, to enhance the mechanical strength of fastener 2 and side fastener 3, weaken and tighten The vibration frequency and amplitude that firmware 2 and side fastener 3 are generated by amorphous alloy electric power；The damping is divided into first and subtracts Mechanism 7 and the second damping are shaken, first damping 7 is set to upper 2 top of fastener, and second damping is set to Between 1 bottom of frame and transformer body 5, the vibration between frame 1 and transformer body 5 can be weakened by damping and passed It passs.2 height of upper fastener is greater than upper yoke height, and the top of upper fastener 2 is beyond upper yoke top, upper 2 side of fastener For wall surface to upper yoke, the center position in upper 2 side wall of fastener beyond upper yoke part is provided with through-hole a；3 height of side fastener Greater than iron core column height, upper yoke height is wherein exceeded at the top of side fastener 3, fastener 3 side wall in side faces upward iron yoke, side fastening 3 side wall of part is provided with through-hole b beyond the center position of upper yoke part, is fixed in the vertical direction of the cross fixed beam Through-hole a is fixed on through-hole b in cross fixed beam horizontal direction, and cross fixed beam connects with upper fastener 2 or side fastener 3 Contact portion is arranged with rubber, is further reduced vibration transmitting；By arrangement of the fixed girder construction of cross on upper fastener 2, have Effect reduce transformer in unloaded or load on fastener 2 vibration.Since fastener 2 upper in the generation of noise will be by that will vibrate Frame 1 is reached, frame 1 generates vibration and forms noise；Therefore the decrease vibrated by upper fastener 2, reduces vibration and reaches frame Frame 1 reduces the generation of noise to weaken the vibration of frame 1.

Since under no-load transformer or load running, there are larger vibrations for the upper fastener 2 of transformer, therefore reduce Vibration transmitting need to be effectively suppressed between fastener 2 and frame 1.It is tightened as shown in Fig. 2, first damping 7 is set to 2 top of firmware, the first damping 7 are respectively arranged on 2 top of upper fastener of coil windings front and rear sides；As shown in figure 3, described First damping 7 is made of clamping apparatus 714, buffer layer and resilient cushion 711, and clamping apparatus 714 is fixedly connected with the first damping 2 top of mechanism 7 and upper fastener, buffer layer is between clamping apparatus 714 and resilient cushion 711；The clamping apparatus 714, which divides, is Preceding card adapter plate, intermediate card adapter plate and rear card adapter plate, preceding card adapter plate, intermediate card adapter plate and rear card adapter plate three form U-shaped card fishplate bar, The opening of the clamping apparatus 714 is connected in the front and rear sides wall of fastener 2, and preceding card adapter plate is located at upper fastener 2 at this time Front side wall on the outside of；Clamping apparatus 714 is additionally provided with strip, and strip is located at preceding card adapter plate inner wall and towards upper 2 front side wall of fastener, Strip towards the side of upper 2 front side wall of fastener be arc-shaped surface.；When clamping apparatus 714 is connected in upper fastener 2, strip Positioned at the underface of upper 2 front side wall of fastener, clamping apparatus 714 guarantees the fixation on axial direction by strip；The damping Layer is located at the middle position at the top of intermediate card adapter plate, and the buffer layer is made of spring 712 and damping piece 713, and 712 sets of spring Outside damping piece 713, buffer layer whole height control at this time is between 45-50mm, it is preferred that buffer layer whole height is 45mm, main cause are: when buffer layer excessive height, damping effect is unsatisfactory, while excessively high in use Also easily there is tilt problem when by radially outward force in buffer layer, and mechanical strength is inadequate；And when damping layer height is too low, Cushioning effect is faint, is unable to get ideal damping effect；Buffer layer whole height uses 45mm by buffer layer in the present embodiment Optimal cushioning effect embody, while effectively preventing the tilt phenomenon that buffer layer occurs during the work time, increase mechanical strong Degree；Resilient cushion 711 is placed at the top of buffer layer, and resilient cushion 711 is made of rubber, and the 711 bottom plane size of resilient cushion is big In 712 diameter of spring.First damping 7 is acted on using dual shock absorption, weaken to the maximum extent upper fastener 2 and frame 1 it Between vibration transmitting；It is fixed using clamping apparatus 714 on upper fastener 2 for the first damping 7 simultaneously, and assembly is simple, dress It is short with the time, do not increase the assembly difficulty of technical staff.

As present embodiment it is further preferred that 1 bottom of the frame and transformer body 5 pass through the second damping Connection, second damping include bottom plate 4 and lower damper, and 4 length of bottom plate is 15-20 ㎝, described Bottom plate 4 is set to 1 bottom of frame, and bottom plate 4 and transformer body are connected between 5 bottom by lower damper；Such as Fig. 4 institute Show, bottom plate 4 is equipped with damping room 41, sets damper in damping room 41, the lower damper is in 4 bottom number of bottom plate N >=3 are measured, and are equipped with lower damper at 1 lower center position of frame always, during damper is under the lower damper opposite central of residue The heart is symmetrical, which ensure that the efficient cushioning effect of the second damping, small number of damping It is faint to the damping effect of transformer bottom for device, while pressure suffered by single damper is excessive, damper easy to damage, contracting Short service life；And although greater number of damper has excellent cushioning effect, but will increase production cost；The present embodiment In lower damper in 1 bottom quantity of frame be 5, which ensure that the optimal damping of the second damping is made With the best comprehensive matching with minimum production cost.As shown in Figure 5 and Figure 6, the lower damper includes connecting rod 44 and pressure spring 45, the pressure spring 45 connects 44 top of connecting rod and 41 top of damping room；The connecting rod 44 is in I-shaped connecting rod, the company 44 bottom of extension bar is connect by fixing piece with 5 bottom of transformer body, is located inside damping room 41 at the top of connecting rod 44, described to subtract Shaking room 41 is in rectangular channel, and for rectangular channel right angle with arc transition, 44 top of connecting rod, four sides are the arcwall face of identical radian measure, The arcwall face is towards 44 top center of connecting rod；The right angle of damping room 41 has sliding slot I, is equipped in sliding slot I Idler wheel 43；The 44 top four corners of connecting rod are equipped with opposite sliding slot II, the sliding slot II with respect to 41 square position of damping room For arc surface, the sliding slot II circular arc radius surface is more than or equal to 43 radius of idler wheel, and sliding slot II is by idler wheel 43 with respect on sliding slot II Lower slider, 44 top thickness of connecting rod are more than or equal to 4 times of 43 radius of idler wheel, guarantee 44 top-side of connecting rod always with idler wheel 43 are in contact；41 side wall of damping room be equipped with rubber pad 42,42 two sides of rubber pad respectively with 41 side wall of damping room, even 44 top curve face contact of extension bar；The damping room 41 at the top of connecting rod 44 by sliding slot I, idler wheel 43 and sliding slot II three it Between opposite sliding, guarantee to ensure that connecting rod 44 is subtracting always in being in rolling contact between 44 top of damping room 41 and connecting rod It is slided up and down in shake room 41 and has low friction, while amorphous alloy is effectively prevented due to 41 sidewall rubber pad 42 of damping room again Vibration contacts transmitting with 41 side wall of damping room by connecting rod 44；The pressure spring 45 is distributed at the top of damping room 41 in positive triangle, Pressure spring 45 is highly at least the 1/2 of 41 height of damping room；4 bottom surface of bottom plate and transformer base pass through resilient cushion 711 It is connected, by the setting of pressure spring 45 and resilient cushion 711, dual vibration isolation is obtained on transformer axial direction, effectively reduces transformation Mechanical oscillation on device axial direction are effectively reduced transformer vibration and noise to the adverse effect of ambient enviroment.

Embodiment 2

For the assembly convenient for fixed beam 8, assembly time is saved；As shown in fig. 7, the fixed beam 8 is by long square plate A81 and long square plate B82 is constituted, and the center position of long square plate A81 is welded and fixed with long square plate B82 center position, and the long square plate A81 is axial Both ends on direction are all provided with jagged A83, the open end the notch A83 towards the bottom long square plate A81, notch A83 width with it is upper 2 consistency of thickness of fastener；Long square plate A81 is buckled in upper 2 top of fastener by notch A83；The long square plate B82 axial direction Both ends be again provided with notch B84, for notch B84 open section towards the bottom long square plate B82, notch B84 width and side fastener 3 are thick Degree is consistent, and long square plate B82 is buckled in 3 top of side fastener by notch B84；The fixed beam 8 can disposably be assemblied in make-up Firmware 2 and the top of side fastener 3, opposite first embodiment reduce assembly time, notch A83 and notch B84 respectively with make-up 2 contact portion of firmware is equipped with rubber layer, avoids fixed beam 8 from directly contacting with upper fastener 2 by rubber layer, causes fixed beam 8 The unnecessary abrasion between upper fastener 2.

The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention In scope of protection of the claims.

Claims (10)

1. a kind of low noise level transformer, including amorphous alloy iron core, fastener, frame (1), transformer body (5) and noise reduction machine Structure, it is characterised in that: the frame (1) is located in the transformer body (5), is used to support whole low noise level transformer；Institute Stating amorphous alloy iron core includes upper yoke, lower yoke and iron core column, the iron core column setting the upper yoke and lower yoke it Between；The fastener is divided into fastener (2), lower fastener (6) and side fastener (3), and the upper fastener (2) is fixed on institute It states above upper yoke, the lower fastener (6) is fixed below the lower yoke, and the side fastener (3) is set to the amorphous At left and right sides of alloy-iron core；The noise reducing mechanism includes fixed beam (8) and damping, and the fixed beam (8) is set to transformer Upper fastener (2) side wall, upper fastener (2) and side fastener (3) are connected as overall structure by the fixed beam (8).

2. low noise level transformer according to claim 1, it is characterised in that: the fixed beam (8) is by long square plate A(81) and Long square plate B(82) constitute, long square plate A(81) center position be welded and fixed with long square plate B(82) center position, the length Square plate A(81) both ends on axial direction are all provided with jagged A(83), the notch A(83) open end is towards the bottom long square plate A(81) Portion, notch A(83) width and upper fastener (2) consistency of thickness.

3. low noise level transformer according to claim 2, it is characterised in that: the long square plate B(82) axial direction two End is again provided with notch B(84), notch B(84) open section fastens towards the bottom long square plate B(82), notch B(84) width and side Part (3) consistency of thickness, long square plate B(82) pass through notch B(84) be buckled at the top of side fastener (3), the notch A(83) and lack Mouth B(84) rubber layer is equipped with upper fastener (2) contact portion respectively.

4. low noise level transformer according to claim 1, it is characterised in that: it further include damping, the damping It is mounted on the transformer bottom and top；The damping is divided into the first damping (7) and the second damping, described First damping (7) is set at the top of upper fastener (2), and second damping is set to frame (1) bottom and transformer master Between body (5).

5. low noise level transformer according to claim 4, it is characterised in that: second damping includes bottom plate (4) and lower damper, the bottom plate (4) are set to frame (1) bottom, lead between bottom plate (4) and transformer body (5) Damper connection is crossed down, bottom plate (4) length is 15-20cm, and bottom plate (4) is equipped with damping room (41), damping room (41) damper is set in；The lower damper is in bottom plate (4) bottom quantity N >=3, and frame (1) lower center position Place is equipped with lower damper always, and damper is centrosymmetric distribution under the lower damper opposite central of residue.

6. low noise level transformer according to claim 5, it is characterised in that: damper is 5 in frame (1) bottom quantity It is a.

7. low noise level transformer according to claim 5, it is characterised in that: the lower damper include connecting rod (44) and Pressure spring (45), pressure spring (45) connection connecting rod (44) top and damping room (41) top；The connecting rod (44) is in I-shaped Type connecting rod, connecting rod (44) bottom are connect by fixing piece with transformer body (5), are located at the top of connecting rod (44) and are subtracted It is internal to shake room (41).

8. low noise level transformer according to claim 3, it is characterised in that: the damping room (41) is in rectangular channel, rectangle Slot right angle is with arc transition, and four sides of connecting rod (44) top are the arcwall face of identical radian measure, and the arcwall face is towards even Extension bar (44) top center；The right angle of the damping room (41) has sliding slot I, is equipped with idler wheel (43) in sliding slot I； Four corners are equipped with opposite sliding slot II with respect to damping room (41) square position at the top of the connecting rod (44), and the sliding slot II is circle Cambered surface；Connecting rod (44) top thickness is more than or equal to the 3/2 of idler wheel (43) radius.

9. low noise level transformer according to claim 8, it is characterised in that: damping room (41) side wall is equipped with rubber Pad (42), rubber pad (42) two sides respectively with damping room (41) side wall, connecting rod (44) top curve face contact.

10. low noise level transformer according to claim 7, it is characterised in that: the pressure spring (45) is pushed up in damping room (41) Portion is distributed in positive triangle, and pressure spring (45) height is at least the 1/2 of damping room (41) height.