CN105051838A - Transformer - Google Patents

Abstract

In such transformers as oil-filled transformers, if the transformer is placed within a ship or a floating wind power tower, there is a possibility that displacement may occur to a coil or core within a tank of the transformer if swinging or tilting continue to be added to the transformer by effects of waves or the like. The present invention provides a transformer which can withstand the effects of such waves. The present invention is a transformer provided with cores, coils wound around the cores, an upper core fastener and a lower core fastener which fix the cores from respective top and bottom directions, and a tank which houses the same, wherein: on the upper core fastener are disposed anti-vibration metal fittings for a core coil assembly incorporating the cores and the coils; the anti-vibration metal fittings have notches; and projections of shapes mating at the notches of the anti-vibration metal fittings are disposed on the inner side of the tank.

Description

transformer

technical field

The present invention relates to transformers such as oil-immersed transformers, and in particular to a structure in which an iron core coil assembly accommodated in the transformer can resist shaking or tilting.

Background technique

Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-103578) discloses an invention in which there is vibration of the transformer main body in a conventional transformer in which anti-vibration rubber is provided on the upper part of the transformer and the panel side and the transformer main body are fixed. The problem of transmission to the disk side via the anti-vibration rubber is solved by adopting the following structure: install a vibration-proof member on the main body of the transformer, install a vibration-proof seat on the outer plate of the disk side, fix bolts on the above-mentioned vibration-proof member, and The anti-vibration seat is provided with a round hole, so that the bolt passes through the round hole, and the bolt does not contact the round hole of the anti-vibration seat in a normal state.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2008-103578

Contents of the invention

The problem to be solved by the invention

Transformers such as oil-immersed transformers for power distribution are usually installed on land. Although shaking and vibration during transportation have been taken into account, it is not considered that the transformer is installed in the tower of a ship or a floating offshore wind turbine. In case of shaking or tilting of waves, etc. When a transformer is used in a tower of a ship or a floating offshore wind turbine, it is generally constantly shaken or tilted, and the iron core or coil in the transformer box may shift.

The purpose of the present invention is to provide a transformer. When the transformer is installed in the tower of a ship or a floating offshore wind power generating set, the iron core or coil in the box of the transformer can withstand the external energy caused by waves and the like. resulting shaking or tilting.

Technical means for solving problems

In order to solve the above-mentioned problems, for example, configurations described in the scope of claims of the present application can be adopted. This application includes a plurality of technical means to solve the above-mentioned problems, and one example is characterized in that: "A transformer includes: an iron core; a coil wound around the iron core; an upper iron core that fixes the above-mentioned iron core A fastener and a lower core fastener; and a box for accommodating these components, wherein the above-mentioned transformer is characterized in that a vibration-proof member of a core-coil assembly is arranged on the above-mentioned upper core fastener, wherein the core-coil assembly The above-mentioned iron core and the above-mentioned coil are assembled, the anti-vibration member has a notch, and a protrusion having a shape for fitting into the notch of the above-mentioned anti-vibration member is arranged inside the above-mentioned case”.

Invention effect

According to the present invention, it is possible to provide a transformer, which is obtained by assembling the coil and the iron core in the box of the transformer when a transformer such as an oil-immersed transformer is installed in a tower of a ship or a floating offshore wind power generating set. The iron core coil assembly is integrally fixed in the structure of the box, and the transformer can resist shaking or tilting.

Description of drawings

Fig. 1A is an external perspective view showing a core-coil assembly according to Embodiment 1 of the present invention.

FIG. 1B is a perspective view showing disassembled components of the core-coil assembly of FIG. 1A .

Fig. 1C is a perspective view showing a vibration isolator of the core-coil assembly of the present invention.

Fig. 1D is a cross-sectional view showing a transformer box.

1E is a plan view showing the arrangement of components inside the transformer, and is a diagram showing the relationship between the vibration isolator of the core-coil assembly and the pillars of the transformer.

Fig. 2 is an external perspective view showing a core-coil assembly according to Embodiment 2 of the present invention.

Fig. 3 is an external perspective view showing a core-coil assembly according to Embodiment 3 of the present invention.

Fig. 4 is an external perspective view showing a core-coil assembly according to Embodiment 4 of the present invention.

5A is an external perspective view showing a core-coil assembly according to Embodiment 5 of the present invention.

Fig. 5B is a diagram showing the relationship between the vibration isolator of the core-coil assembly and the pillar of the transformer.

Fig. 6 is an external perspective view showing a core-coil assembly according to a sixth embodiment of the present invention.

7A is an external perspective view showing the core-coil assembly of the present invention when the core is a wound core.

FIG. 7B is a perspective view showing disassembled components of the core-coil assembly of FIG. 7A .

Fig. 8 is a perspective view showing the appearance of the oil-immersed transformer.

Explanation of reference signs

1, 2 ‥ Lower iron core fasteners

3, 4 ‥ stud bolts

5, 6, 7‥ coil

8, 9‥ Upper iron core fasteners

10, 11‥ Stud bolts

12‥Laminated iron core (laminated iron core)

13, 14‥The anti-vibration part of the iron core coil assembly

131, 132, 141, 142‥ Notches in the shape of a recess

15～22‥ Stud bolts

23～28 insulation wall

29 boxes

291, 292, 293, 294‥pillar (protrusion)

30, 31, 32, 33‥Anti-vibration parts

301, 311, 321, 331‥Notches in the shape of a concave part

34, 35, 36, 37‥ Anti-vibration parts integrated with the upper iron core fastener

341, 351, 361, 371‥Notch in the shape of a concave part

40, 41‥Anti-vibration parts

401, 411‥Notches in the shape of a concave part

50, 51‥The anti-vibration parts set on the lower iron core fasteners

501, 502‥Notches in the shape of a concave part

52‥Pillar

60, 61‥Anti-vibration parts integrated with upper iron core fasteners

62, 63‥Anti-vibration parts integrated with the lower iron core fasteners

601, 611, 641, 651‥Notches in the shape of a recess

70‥ coil core

71, 72, 73‥ coil

74‥ Upper core fastener

75 ‥ Lower core fasteners

76, 77‥Anti-vibration parts of iron core coil assembly

761, 762, 771, 772‥ Notches in the shape of a concave part

78～85‥Stud bolts connecting the upper iron core fastener 74 and the lower iron core fastener 75

86～91‥Insulation wall

95‥ wave rib

96‥Welding wire

97‥Primary side terminal

98‥Secondary side terminal

99‥Flange

100‥Oil-immersed iron core transformer

200‥ Iron core coil assembly

Detailed ways

Embodiments of the present invention will be described below using the drawings.

(Example 1)

1A is a perspective view showing a core-coil assembly of a transformer according to Embodiment 1 of the present invention, and FIG. 1B is a perspective view showing disassembled components of the core-coil assembly of FIG. 1A .

In Fig. 1A and Fig. 1B, 200 is an iron core coil assembly, 1, 2 are lower iron core fasteners, 3, 4 are connecting two lower iron cores at the ends of the longitudinal direction of the lower iron core fasteners Stud bolts (stud) of fasteners, 5, 6, 7 are coils, 8, 9 are upper iron core fasteners, 10, 11 are joints at the ends of the upper iron core fasteners in the longitudinal direction 2 A stud bolt of an upper iron core fastener, 12 is a laminated iron core (stacked iron core), and 13, 14 are vibration-proof parts of an iron core coil assembly.

15-22 are the stud bolts connecting the upper iron core fasteners 8, 9 and the lower iron core fasteners 1, 2, and 23-28 are insulation walls sandwiched between the coil and the laminated iron core 12. ).

In FIG. 1A , coils 5 , 6 , 7 are inserted into a laminated iron core 12 . The laminated iron core 12 has a strip type, a frame type and a V-groove type, and the strip type laminated iron core is shown here.

The elongated laminated iron core is formed by laminating silicon steel plates cut into elongated shapes to form a leg portion and a yoke portion of the core. Furthermore, when inserting the coils 5, 6, and 7, the core of the three-phase three-column core is assembled by removing one yoke part and inserting the coil, and then returning the yoke part to its original shape. After the laminated core 12 and the coils 5, 6, 7 are assembled, the two lower core fasteners 1, 2 and the upper core fasteners 8, 9 are arranged facing each other in parallel to sandwich the laminations. Type iron core 12 utilizes stud bolts 3,4,10,11 to connect.

Furthermore, the lower core fasteners 1 and 2 and the upper core fasteners 8 and 9 are connected by stud bolts 15 to 22 . Here, the structure of the lower core fastener and the upper core fastener is such that the elongated metal plates constituting the "U" shape are arranged so that the bottoms of the "U" shape face each other, and the metal plates are sandwiched between the bottom parts. Wear laminated iron core 12. Furthermore, the lower core fasteners 1 and 2 and the upper core fasteners 8 and 9 are connected by stud bolts 3 , 4 , 10 , and 11 . The connecting portion is a U-shaped bottom, which sandwiches the other ends of the laminated iron core 12, and is located on the centerline in the longitudinal direction of the bottom.

In addition, the lengths of the lower core fasteners 1, 2 and the upper core fasteners 8, 9 are longer than the length in the longitudinal direction formed by inserting the three coils 5, 6, 7 into the laminated core 12. Miniaturization is achieved by extending the length corresponding to the stud bolts connecting the upper and lower core fasteners. In addition, the locations where the stud bolts 15 to 22 that connect the lower iron core fasteners 1, 2 and the upper iron core fasteners 8, 9 are arranged are formed in the "C ”-shaped upper side, in the case of the upper core fasteners 8, 9, formed on the lower side of the “U” shape, its position is located at the points at both ends of the upper and lower core fasteners, and it is roughly divided into thirds on the 2 points.

Next, insulating walls 23-28 are provided between the coils 5, 6, 7 and the upper iron core fasteners 8, 9 and the lower iron core fasteners 1, 2, thereby realizing the connection between the coil and the laminated iron core. insulation. In addition, the insulating walls 23 to 28 also insulate the coil from the upper and lower core fasteners. As the insulating wall, kraft paper or pressboard (pressboard) for epoxy-based electrical insulation that is generally excellent in moisture resistance, heat resistance, and oil resistance is used.

The coil and the laminated core are assembled, and vibration-proof members 13 and 14 are disposed above the upper core fasteners 8 and 9 of the core-coil assembly 200 fixed by the upper and lower core fasteners. The anti-vibration members 13 and 14 are provided in a bridging form so as to be perpendicular to each other at a point that roughly divides the upper side formed by opposing the U-shaped bottoms of the two upper core fasteners 8 and 9 into three equal parts. In addition, as shown in FIG. 1C, the anti-vibration members 13 and 14 are formed of rectangular elongated metal plates, and in order to be housed in the transformer box, the length in the long side direction is slightly smaller than the length of the short side inside the transformer box. short length. In addition, notches 131 and 132 in the shape of recesses are formed at the centers of both ends of the short sides of the vibration isolator 13 . The anti-vibration members 13, 14 are installed and fixed on the upper sides of the "U" shape of the upper iron core fasteners 8, 9 by screwing or welding.

Next, the transformer box 29 is demonstrated using FIG. 1D. FIG. 1D shows a cross-sectional view of the transformer box 29. The box 29 is formed to be long in the direction in which the coils are arranged, and the section of the box is a horizontally long rectangle. In addition, convex-shaped (protrusion) stays 291 to 294 are provided at two locations that divide the length in the longitudinal direction of the inside of the box approximately into thirds and at two locations inside the box facing the two locations.

Next, FIG. 1E shows a top view of the inside of the box when the core coil assembly shown in FIG. 1A is housed in the transformer box.

In the plan view of the iron core coil assembly in the box of the transformer shown in Fig. 1E, the laminated iron core 12 is sandwiched by two upper iron core fasteners 8, 9, and the long sides of the upper iron core fasteners The length in the direction is slightly shorter than the length in the long side direction of the box, and the stud bolts 10, 11 connecting the upper iron core fasteners 8, 9 are at both ends of the iron core fasteners, away from the laminated The parts of the iron core are connected. In addition, the anti-vibration members 13, 14 of the core coil assembly are arranged approximately vertically on the upper sides of the upper core fasteners 8, 9, and are configured to be approximately perpendicular to the transformer box at a portion that divides them approximately into thirds.

Furthermore, the notches 131 , 132 , 141 , 142 in the shape of recesses of the anti-vibration members 13 , 14 of the core-coil assembly are fitted into the pillars 291 to 294 arranged in the transformer box. FIG. 1E(b) shows an enlarged view of this fitted state (A portion of FIG. 1E ), and FIG. 1E(c) shows a perspective view thereof.

Fig. 1E (b) and (c) have shown the state that the support in the transformer case is fitted with the anti-vibration part of the iron core coil assembly, the width t of the support 294 in the case 29 is smaller than the notch of the concave part shape of the anti-vibration part 14 The width T is slightly narrower with a slight gap in between.

In addition, the height direction is configured so that the thickness (L) of the support in the transformer box is thicker than the thickness (l) of the vibration isolator 14 of the core coil assembly as shown in FIG. 1E(c). This is because the fitting of both is not disengaged due to shaking or tilting of the transformer.

With such a structure, when the core-coil assembly is suspended and accommodated in the transformer box, it is possible to perform a tonguing operation using the support as a guide.

(Example 2)

Next, Embodiment 2 of the present invention will be described using the drawings.

Fig. 2 is a perspective view of a core-coil assembly showing the structure of Example 2, which is different from Example 1 in the shape of the vibration-proof material of the core-coil assembly.

In addition, the structure other than the vibration isolator is the same as that of the first embodiment, and therefore descriptions other than the vibration isolator will be omitted.

In FIG. 2 , the anti-vibration members 30 , 31 , 32 , 33 are arranged on the upper sides of the “U” shape of the upper core fastening members 8 and 9 . The shape of the anti-vibration members 30, 31, 32, 33 is not formed in the shape of two iron core fasteners 8, 9 in the form of a bridge as shown in Embodiment 1, but is arranged on the upper side of each iron core fastener. The shape of the rectangle is arranged, and the locations where it is arranged are two locations that roughly divide the length of the core fasteners 8 and 9 in the longitudinal direction into thirds. In addition, in each vibration isolator 30 , 31 , 32 , 33 , notches 301 , 311 , 321 , 331 in the shape of recesses are formed in the center of the outer sides.

Moreover, although not shown in figure, the support|pillar of the shape of a convex part which fits the notch 301, 311, 321, 331 of this concave part shape is formed in the inside of a case of a transformer.

In FIG. 2, although the vibration isolators 30, 31 and the vibration isolators 32, 33 are disposed at opposite positions, the positions of the respective vibration isolators may be different, thereby increasing the number of the vibration isolators.

(Example 3)

Next, Embodiment 3 of the present invention will be described using the drawings.

FIG. 3 is a perspective view of the core-coil assembly showing the structure of the third embodiment. The difference from the structure of the first embodiment lies in the structure of the vibration-proof member of the core-coil assembly.

In addition, the structure other than the vibration isolator is the same as that of the first embodiment, and therefore description thereof will be omitted.

In FIG. 3 , Example 3 is a structure in which the core fasteners 8 , 9 are integrated with the core fasteners 8 , 9 and the core fasteners 8 , 9 in an integrated manner. The anti-vibration members 34 to 37 are configured by forming rectangular-shaped protrusions on the U-shaped upper parts of the upper core fasteners 8 and 9 by bending and pressing.

In addition, notches 341 , 351 , 361 , and 371 in the shape of recesses are formed in the central portion of the front end of the vibration-isolator integrated with the upper core fastener.

In addition, in the box of the transformer, a strut to be fitted with the anti-vibration member is arranged.

According to the structure of Example 3, it is not necessary to fix to the iron core fasteners by screws or welding, as shown in Examples 1 and 2, and since it is integrated, it is possible to form the anti-vibration member with good precision. .

(Example 4)

Next, Embodiment 4 of the present invention will be described using the drawings.

Fig. 4 shows a perspective view of the iron core assembly of the structure of embodiment 4. The difference from embodiment 1 is that, in addition to the configuration of embodiment 1, the vibration-proof parts are also mounted on both ends of the upper core fastener. The way the bridge is formed on the 2 core fasteners 8, 9 forms a rectangular sheet metal.

Further, in the vibration-proof members 40 and 41 arranged at both ends of the core fasteners 8 and 9 , notches 401 and 411 in the shape of recesses are formed at the center of the outer sides of both.

Moreover, the support|pillar which fits vibration-proof material 13,14 and vibration-proof material 40,41 is arrange|positioned in the case of a transformer.

In the structure of Example 4, the core-coil assembly 200 can be prevented from shaking in the longitudinal direction by the anti-vibration members 13 and 14, and the vibration in the short-side direction (short-side direction) can be prevented by the anti-vibration members 40 and 41. Shake, a core coil assembly that can prevent two-dimensional shaking in the box.

(Example 5)

Next, Embodiment 5 of the present invention will be described using the drawings.

5A is a perspective view of a core-coil assembly showing the structure of Example 5. The difference from the structure of Example 1 is that, in addition to the arrangement of Example 1, the anti-vibration member is attached to the lower core. The underside is configured in the same manner as the upper core fastener.

That is, in FIG. 5A, the vibration isolators 13, 14 of the elongated rectangular core-coil assembly are arranged on the upper side of the "U" shape of the upper core fasteners 8, 9 in a bridging manner. The structure is the same as that of Example 1, but the difference of Example 5 is that, on the lower side of the "U" shape of the lower core fasteners 1 and 2, a vibration isolator with the same size as the upper side of the vibration isolator is placed 50, 51 are configured and fixed to the two lower iron core fasteners 1, 2 in a bridging manner.

In the structure shown in FIG. 5A , notches 501 and 511 in the shape of recesses are formed in the central portions of both ends of the short sides of the lower vibration-isolating members 50 and 51 . The anti-vibration parts 13 arranged on the upper iron core fasteners 8 and 9 and the anti-vibration parts 50 provided on the lower iron core fastening parts 1 and 2 are arranged in the same manner in the vertical direction. Similarly, the anti-vibration parts on the upper side The vibrator 14 and the lower vibration isolator 51 are arranged so as to coincide with each other in the vertical direction. As a result, the recess-shaped notches formed in each vibration isolator are configured to coincide with each other in the vertical direction. According to such a structure, as shown in FIG. 5B, the core-coil assembly 200 can be accommodated using the support|pillar 52 formed in the case 29 of a transformer as a guide. FIG. 5B is a diagram showing a state where a rectangular parallelepiped support (protrusion) 52 vertically arranged in the transformer box 29 is fitted into the concave-shaped notches 132, 501 of the upper and lower vibration dampers 13, 50 of the core coil assembly 200. .

In the upper and lower parts of the box of such a transformer, the anti-vibration structure can prevent the shaking or tilting of the core-coil assembly against the shaking or tilting of the outside of the transformer.

(Example 6)

Next, Embodiment 6 of the present invention will be described using the drawings.

In the structure of Example 5, the vibration isolators 13, 14 of the upper iron core fastener 8 and the vibration isolators 50, 51 of the lower iron core fastener 9 are respectively formed of elongated rectangular metal plates, but FIG. 6 is a perspective view of a core-coil assembly having a structure in which upper and lower vibration dampers are integrated with upper and lower core fasteners, respectively. The structure in which the anti-vibration members are integrated is as described in the third embodiment, and the sixth embodiment is a structure in which the anti-vibration members 64 , 65 are also integrated with the lower core fasteners 1 , 2 .

According to the structure of the sixth embodiment as described above, since the anti-vibration material and the core fastener are integrally formed, the position of the anti-vibration material can be fabricated with high precision, and the vertical positioning in particular becomes easy. And the scarfing operation can be carried out smoothly.

(Example 7)

Next, Embodiment 7 of the present invention will be described using the drawings.

FIG. 7A shows a perspective view of a core-coil assembly of a transformer according to Embodiment 7, and FIG. 7B shows a perspective view of disassembled components of the core assembly 200 of FIG. 7A . In Fig. 7A and Fig. 7B, 70 is the winding core (wire harness core), 71, 72, 73 are coils, 74 is the upper core fastener, 75 is the lower core fastener, 76, 77 are iron The anti-vibration parts of the core coil assembly, 78 to 85 are stud bolts connecting the upper iron core fastener 74 and the lower iron core fastener 75, and 86 to 91 are insulating walls.

In FIG. 7A , coils 71 , 72 , 73 are inserted into wound core 70 .

The wound core 70 is configured as shown in FIG. 7B . To insert it, the upper wrap portion of the wound core is opened, the coil is inserted, and the winding operation is performed to assemble the wound core and the coil. At this time, insulating walls 86 to 91 are interposed between the wound core 70 and the coils 71 , 72 , and 73 to insulate the wound core and the coils. In addition, the insulating wall also performs insulation from the upper core fastener 74 and the lower core fastener 75 . After the three-phase three-column iron core is assembled, and the wound iron core 70 and the coils 71, 72, and 73 are assembled, the wound iron core is sandwiched from the upper and lower directions by the upper iron core fastener 74 and the lower iron core fastener 75. 70, connected by stud bolts 78～85.

In addition, the upper iron core fastener 74 and the lower iron core fastener 75 are different from the structure of the first embodiment in that the front end of the elongated "U"-shaped side is bent to form a flange portion 99, and the " The "U"-shaped concave part sandwiches the wound iron core 70 from the up and down directions as an inverted U shape and a U shape, and the flange part 99 is connected with the stud bolts 78 to 85 .

In this structure, the anti-vibration members 76 and 77 of the core-coil assembly 200 are disposed on the U-shaped flat portion of the upper core fastener 74 .

The anti-vibration members 76 and 77 are elongated rectangular metal plates arranged perpendicular to the longitudinal direction on the flat portion of the upper surface of the upper core fastener 74, and are fixed by screwing or welding.

In addition, notches 761 , 762 , 771 , 772 in the shape of recesses are formed in the center portions of both ends of the short sides of the vibration-proof members 76 , 77 . In addition, similarly to the first embodiment, the pillars corresponding to the recess-shaped notches of the anti-vibration members 76 and 77 are arranged in the transformer box, whereby the structure of the seventh embodiment is accommodated in the transformer box, that is, The transformer manufactured by scarfing and oil filling has a structure that can resist shaking.

Next, an oil-immersed transformer housing a core-coil assembly including an iron core and a coil according to the present invention will be described. 8 is a perspective view showing the appearance of an oil-filled iron-core transformer mounted with a silicon steel plate and an amorphous ribbon (amorphous ribbon) iron core. In FIG. 8 , the oil-immersed iron core transformer 100 is configured such that ribs (rib) 95 are provided on the periphery of a box 29 that accommodates coils that insulate coils mounted on laminated iron cores or wound iron cores. , The cooling insulating oil cools the heat generated from the coil and iron core, etc.

In addition, in FIG. 8 , 96 is a welding line that is welded and fixed on the upper and lower sides of the corrugated rib 95 , so that the corrugated rib 95 has strength and does not deform. 97 is a primary-side terminal provided on the upper part of the box 29, and is a terminal to which a high-voltage power supply sent from a power station is connected. 98 is a secondary-side terminal provided on the upper part of the box 29, and is a terminal for connecting the voltage boosted or stepped down by the transformer to the load side.

In addition, since the iron core coil assembly shown in FIG. 1A , that is, an assembly having a structure in which the coils are arranged in the lateral direction, is housed in the box 29 , the transformer as a whole has a horizontally long shape.

Claims (9)

1. A transformer comprising: an iron core; a coil wound around the iron core; an upper iron core fastener and a lower iron core fastener fixing the iron core from up and down; and accommodating these parts box, the transformer is characterized by: An anti-vibration part of an iron core coil assembly is arranged on the upper iron core fastener, wherein the iron core coil assembly is formed by assembling the iron core and the coil, The anti-vibration member has notches, A protrusion having a shape for fitting into the notch of the vibration isolator is disposed inside the case. 2. The transformer according to claim 1, characterized in that: The anti-vibration part of the core-coil assembly is formed of a rectangular metal plate whose length in the direction of the long side is slightly shorter than the length of the short side inside the box of the transformer, and between the short sides of the anti-vibration part A notch in the shape of a concave portion is formed in the central portion of the end portion. 3. The transformer according to claim 1, characterized in that: The upper iron core fastener and the lower iron core fastener of the core coil assembly are formed by connecting the elongated "U"-shaped bottoms to face each other with stud bolts, and one or more The vibration isolator is arranged on the upper side of the upper core fastener so as to bridge perpendicular to the longitudinal direction of the upper core fastener. 4. The transformer according to claim 1, characterized in that: The shape of the upper iron core fastening member is an elongated "U" shape, and the anti-vibration piece is integrally formed with one side of the "U" shape. 5. The transformer according to claim 1, characterized in that: The vibration isolators of the core-coil assembly arranged on the upper core fastener are respectively arranged in the longitudinal direction and the short-side direction of the upper core fastener. 6. The transformer according to claim 1, characterized in that: The notch of the anti-vibration part of the core coil assembly is in the shape of a concave part, The protrusion of the box of the transformer that fits into the recess is in the shape of a cuboid, The length of the projection of the case is greater than the thickness of the vibration-proof material. 7. A transformer comprising: an iron core; a coil wound around the iron core; an upper iron core fastener and a lower iron core fastener fixing the iron core from up and down; and accommodating these parts box, the transformer is characterized by: An anti-vibration member of the core coil assembly is arranged on the upper iron core fastener and the lower iron core fastener, A notch in the shape of a concave portion is formed in the vibration isolator, A protrusion having a shape that fits into the notch of the vibration isolator is disposed on the case of the transformer. 8. The transformer according to claim 7, characterized in that: The vibration isolator arranged on the upper core fastener and the vibration isolator arranged on the lower core fastener are arranged such that the recess-shaped cutouts are aligned in the vertical direction. 9. The transformer according to claim 7, characterized in that: The protrusions disposed in the case that fit into the recess-shaped notches of the vibration isolators are rectangular parallelepipeds whose length is longer than the distance between the upper and lower vibration isolators.