Displacement-controlled seismic-resistant transformer using friction dampers

Abstract

The present invention relates to a displacement-controlled, seismic-resistant transformer utilizing a friction damper. The transformer may include: a main body; an upper frame disposed above the main body and configured to secure the main body; a lower frame disposed below the main body and configured to support the main body and secure it to a base; and a friction damper unit interlockingly disposed between the main body and the base, configured to cushion vibrations transmitted to the main body via the base fixed to the ground. According to the present invention, when an earthquake occurs, the friction force of the damper is utilized to absorb seismic energy, thereby preventing damage to the transformer that could otherwise be caused by the earthquake's impact.

Description

Technical Field

[0001] The present invention relates to a displacement-controlled earthquake-resistant transformer using a friction damper, and more particularly, to an earthquake-resistant transformer having improved earthquake-resistant performance by using a friction damper structure in the transformer. Background Art

[0002] A transformer has an iron core and windings and is one of the most important devices in power transformation equipment. It is a device that converts the receiving voltage or distribution voltage into a voltage suitable for the load through electromagnetic induction.

[0003] Oil-immersed transformers are commonly used because they are inexpensive, have high dielectric strength, and require minimal maintenance. Molded transformers are also commonly used because they are insulated with epoxy resin and molded. Molded transformers offer advantages such as small size and low fire risk, but are weak to impulse voltage.

[0004] Since these transformers are installed in most power transmission and distribution facilities, they must operate reliably at all times to ensure a stable power supply. South Korea is not considered an earthquake-safe region, especially as evidenced by the 5.8 magnitude earthquake that struck Gyeongju in 2016. Therefore, measures to protect transformers from seismic vibrations are essential to ensure emergency control and the preservation of life and property.

[0005] Furthermore, since transformers often fail and explode due to shocks caused by vibrations, special attention and technology are required during earthquakes to minimize the shocks transmitted to the transformers and prevent them from failing and exploding due to vibrations.

[0006] Especially during an earthquake, if a transformer fails or explodes, the protective relays at the power plant or substation will detect the transformer failure and explosion, which may cause power outages in a large area, resulting in huge personal and property losses. Therefore, there is an urgent need to develop a technology to minimize the damage caused by earthquakes to transformers.

[0007] Seismic waves include P waves and S waves that travel through the Earth's interior, as well as surface waves (Rayleigh waves and Love waves) that travel along the Earth's surface. These waves generally occur in this order: P waves, S waves, and surface waves. P waves do not cause significant damage to structures, but S waves and surface waves can cause significant damage. P waves are longitudinal waves that travel parallel to the direction of the earthquake and are called push waves. S waves are transverse waves that travel perpendicular to the direction of the earthquake and are called shake waves. Surface waves that travel along the Earth's surface are also called long waves because of their large vibrations and long wavelengths. Because they violently shake the ground, they cause the most damage among seismic waves, such as landslides and building collapses. Among surface waves, Rayleigh waves, which appear later than Love waves, are particularly destructive.

[0008] Surface waves may adversely affect the busbars and surrounding equipment connected to the transformer or cause major accidents, resulting in the disconnection of many devices. Various power transmission and distribution equipment, including transformers, may suffer secondary serious damage such as shutdown due to long-period surface waves.

[0009] However, conventional seismic shock absorbers often focus on mitigating short-period vibrations. Using these shock absorbers requires additional equipment to attenuate long-period vibration waves. This not only inevitably increases costs but also creates the risk of conflict between the short-period vibration buffer and the long-period vibration buffer.

[0010] Therefore, there is an urgent need for technologies that can effectively attenuate short-period vibrations of sensitive transmission and distribution equipment such as transformers, while also attenuating long-period vibrations. Summary of the Invention

[0011] The present invention is proposed to solve the above-mentioned problem. An object of the present invention is to provide a seismic-resistant transformer in which a friction damper structure is applied to the transformer to improve seismic performance.

[0012] The present invention for achieving the above-mentioned purpose relates to a displacement-controlled seismic-resistant transformer using a friction damper, which may include: a device body; an upper frame, arranged at the upper part of the above-mentioned device body, for fixing the above-mentioned device body; a lower frame, arranged at the lower part of the above-mentioned device body, for supporting the above-mentioned device body and fixing it to a base; and a friction damper unit, arranged in a linkage manner between the above-mentioned device body and the above-mentioned base, for buffering vibrations transmitted to the above-mentioned device body through the base fixed to the ground.

[0013] Furthermore, in an embodiment of the present invention, the friction damper unit may include: a damper base, used to support the lower end portion of the lower frame, and configured on the ground; a support frame, connected to both sides of the upper frame; a first damper rod, fixed to the upper portion of the damper base through a damper bracket; and a second damper rod, the lower portion of which is connected to the first damper rod, and the upper portion is connected to the support frame.

[0014] Furthermore, in an embodiment of the present invention, the friction damper unit further includes a friction pad, which is disposed between the first damper rod and the second damper rod, and cushions vibrations by contacting and rubbing against the first damper rod and the second damper rod; the material of the friction pad may be a material having relatively high elasticity or high ductility relative to the material of the first damper rod and the second damper rod.

[0015] Moreover, in an embodiment of the present invention, the first center hole, the pad center hole and the second center hole can be connected by a center bolt, the above-mentioned first center hole is circular and formed on the center side of the above-mentioned first damper rod; the above-mentioned pad center hole is circular and formed on the center side of the above-mentioned friction pad; the above-mentioned second center hole is circular and formed on the center side of the above-mentioned second damper rod.

[0016] Moreover, in an embodiment of the present invention, the first side hole, the pad side hole and the second side hole can be connected by multiple side bolts to alleviate the Y-axis displacement of the above-mentioned device body. The above-mentioned first side hole is circular, and multiple holes are formed along the circumferential direction on the outside of the above-mentioned first damper rod; the above-mentioned pad side hole is elliptical, and multiple holes are formed along the circumferential direction on the outside of the above-mentioned friction pad; the above-mentioned second side hole is elliptical, and multiple holes are formed along the circumferential direction on the outside of the above-mentioned second damper rod.

[0017] Moreover, in an embodiment of the present invention, the first middle hole, the pad middle hole and the second middle hole can be connected by an intermediate bolt to alleviate the Y-axis displacement of the above-mentioned device body, the above-mentioned first middle hole is circular, and multiple holes are formed along the circumferential direction between the above-mentioned first center hole and the above-mentioned first side hole on the above-mentioned first damper rod; the above-mentioned pad middle hole is elliptical, and multiple holes are formed along the circumferential direction between the above-mentioned pad center hole and the above-mentioned pad side hole on the above-mentioned friction pad; the above-mentioned second middle hole is elliptical, and multiple holes are formed along the circumferential direction between the above-mentioned second center hole and the above-mentioned second side hole on the above-mentioned second damper rod.

[0018] According to the present invention, when an earthquake occurs, the friction force of the damper is used to absorb the earthquake energy, thereby preventing damage to the transformer that may be caused by the earthquake impact.

[0019] Moreover, the invention has the characteristics of simple structure and small space, and thus can be conveniently installed in existing transformer equipment and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the arrangement position of the friction damper unit in the earthquake-resistant transformer of the present invention.

[0021] Figure 2 This is a side view showing the arrangement position of the friction damper unit in the earthquake-resistant transformer of the present invention.

[0022] Figure 3 It is a partial perspective view of the arrangement structure of the support frame in the earthquake-resistant transformer of the present invention.

[0023] Figure 4 It is a front view showing the structure of a first damper rod in the earthquake-resistant transformer of the present invention.

[0024] Figure 5 It is a front view showing the friction pad structure in the earthquake-resistant transformer of the present invention.

[0025] Figure 6 It is a front view showing the structure of the second damper rod in the earthquake-resistant transformer of the present invention.

[0026] Figure 7 It is an exploded perspective view of the friction damper unit of the present invention.

[0027] Figure 8 The experimental data show the seismic performance of the Y-axis displacement changing with time when a 100% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention.

[0028] Figure 9 The experimental data show the seismic performance of the present invention when a 200% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention, and the displacement in the Y-axis direction changes with time.

[0029] Figure 10 The experimental data show the seismic performance of the present invention when a 100% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention, and the response acceleration in the X-axis direction changes with time.

[0030] Figure 11 The experimental data show the seismic performance of the present invention when a 100% earthquake wave that complies with the AC156 standard is applied to the seismic transformer of the present invention, and the response acceleration in the Y-axis direction changes with time.

[0031] Figure 12The experimental data show the seismic performance of the seismic transformer of the present invention when a 200% earthquake wave conforming to the AC156 standard is applied, in which the acceleration in the X-axis direction changes with time.

[0032] Figure 13 The experimental data show the seismic performance of the present invention when a 200% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention, and the response acceleration in the Y-axis direction changes with time.

[0033] Description of Reference Signs

[0034] 10: Earthquake-resistant transformer 20: Device body

[0035] 31: First spacer 33: Second spacer

[0036] 41: Upper frame 43: Lower frame

[0037] 45: Base 47: Connecting bolt

[0038] 100: Friction damper unit 110: First damper rod

[0039] 111: First center hole 113: First middle hole

[0040] 115: First side hole 119: Bracket hole

[0041] 120: Friction pad 121: Pad center hole

[0042] 123: Pad middle hole 125: Pad side hole

[0043] 130: Second damper rod 131: Second center hole

[0044] 133: Second middle hole 135: Second side hole

[0045] 139: Upper hole 141: Center bolt

[0046] 143: Middle bolt 145: Side bolt

[0047] 147: Fixing nut 150: Support frame

[0048] 160: Bracket 170: Hinge pin

[0049] 171: Countersunk nut 180: Damper base DETAILED DESCRIPTION

[0050] Hereinafter, preferred embodiments of the displacement-controlled seismic-resistant transformer using a friction damper according to the present invention will be described in detail with reference to the accompanying drawings.

[0051] Reference Figure 1 and Figure 2 , the seismic-resistant transformer 10 of the present invention may include: a device main body 20, a first spacer 31, a second spacer 33, an upper frame 41, a lower frame 43, and a friction damper unit 100.

[0052] The above-mentioned device main body 20 may form the outer shape of the molded transformer and may be implemented as a cylindrical shape. Openings (not shown) may be formed on the upper and lower center sides of the above-mentioned device main body 20.

[0053] Basically, the molded transformer may include an iron core, a low-voltage coil, and a high-voltage coil.

[0054] First, the iron core may be configured to penetrate through the central portion of the above-mentioned device main body 20 through the openings formed on the upper and lower ends of the above-mentioned device main body 20.

[0055] And, the low-voltage coil may be arranged along the circumferential direction inside the above-mentioned device main body 20. The low-voltage coil may be arranged at a predetermined interval with respect to the iron core and surround the outer periphery of the above-mentioned iron core.

[0056] In addition, the high-voltage coil may be arranged along the circumferential direction inside the above-mentioned device main body 20. In this case, the high-voltage coil may be arranged at a predetermined interval with respect to the low-voltage coil and surround the outer periphery of the low-voltage coil.

[0057] A plurality of the above-mentioned first spacers 31 may be arranged on the upper part of the above-mentioned device main body 20. A plurality of the above-mentioned second spacers 33 may be arranged on the lower part of the above-mentioned device main body 20. Among them, the above-mentioned first spacer 31 and the above-mentioned second spacer 33 may be arranged at corresponding positions on the upper and lower parts of the above-mentioned device main body.

[0058] The above-mentioned upper frame 41 is arranged on the upper part of the above-mentioned first spacer 31 and may be a "C"-shaped frame for supporting the above-mentioned device main body 20. And, the above-mentioned lower frame 43 is arranged on the lower part of the above-mentioned second spacer 33 and may be a "C"-shaped frame for supporting the above-mentioned device main body 20 and fixed to the above-mentioned base 45. However, the shapes of the above-mentioned upper frame 41 and lower frame 43 are not necessarily limited to this.

[0059] The iron core may be configured to protrude from the upper and lower parts of the above-mentioned device main body 20 and cross the length directions of the above-mentioned upper frame 41 and the above-mentioned lower frame 43.

[0060] And, the above-mentioned upper frame 41 and the above-mentioned lower frame 43 are respectively arranged in pairs based on the above-mentioned iron core and are fastened to each other by connecting bolts 47, so as to fix and support the above-mentioned device main body 20.

[0061] On the other hand, the above-mentioned friction damper unit 100 is configured in a linkage manner between the above-mentioned device main body 20 and the above-mentioned base 45, and can play a role in buffering the vibration transmitted to the above-mentioned device main body 20 through the base 45 fixed to the ground.

[0062] Such above-mentioned friction damper unit 100 may include a damper base 180, a support frame 150, a first damper rod 110, a second damper rod 130, and a friction pad 120.

[0063] The above-mentioned damper base 180 may be disposed on the ground to support the lower end portion of the above-mentioned lower frame 43.

[0064] The above-mentioned support frame 150 may be connected to both side portions of the above-mentioned upper frame 41. Refer to Figure 1 and Figure 3 As shown in the figure, the above-mentioned support frame 150 may be in a "C" shape, and the upper end and the lower end of the above-mentioned support frame 150 may be fastened by bolts 151 to be combined with the above-mentioned upper frame 41. And the side surface of the above-mentioned support frame 150 may be connected to the upper side portion of the above-mentioned second damper rod 130 through the combination of a hinge pin 170 and a countersunk nut 171.

[0065] The material of the above-mentioned support frame 150 may be a metal material with good rigidity such as iron or a material such as reinforced ceramics.

[0066] The above-mentioned first damper rod 110 may be fastened to a damper bracket 160 by bolts and fixed to the upper portion of the above-mentioned damper base 180.

[0067] Refer to Figure 4 As shown in the figure, a first central hole 111, a first intermediate hole 113, a first side hole 115, and a bracket hole 119 may be formed in the above-mentioned first damper rod 110.

[0068] The above-mentioned first central hole 111 may be circular and formed on the central side of the above-mentioned first damper rod 110. The above-mentioned first side hole 115 may be circular and formed on the outer side of the above-mentioned first damper rod 110. The above-mentioned first intermediate hole 113 may be circular and a plurality of them may be formed along the circumferential direction between the above-mentioned first central hole 111 and the above-mentioned first side hole 115.

[0069] The above-mentioned first damper rod 110 may be fixed to the upper portion of the above-mentioned damper base 180 by bolt fastening through the above-mentioned bracket hole 119.

[0070] The lower side portion of the above-mentioned second damper rod 130 may be connected to the above-mentioned first damper rod 110, and the upper side portion may be connected to the above-mentioned support frame 150.

[0071] Refer to Figure 6The second damper rod 130 may include a second central hole 131 , a second middle hole 133 , a second side hole 135 and an upper hole 139 .

[0072] The second center hole 131 may be circular and formed at the center of the second damper rod 130. The second side holes 135 may be elliptical and formed in plurality on the outer side of the second damper rod 130. The second intermediate holes 133 may be elliptical and formed in plurality along the circumferential direction between the second center hole 131 and the second side holes 135.

[0073] The second damper rod 130 may be connected to the side of the support frame 150 by fastening a hinge pin 170 and a counter nut 171 through the upper hole 139 .

[0074] The material of the first damper rod and the second damper rod can be a metal material with good rigidity such as iron or a material such as reinforced ceramic.

[0075] The friction pad 120 is disposed between the first damper rod 110 and the second damper rod 130 and can be configured to contact and rub against the first damper rod 110 and the second damper rod 130 to cushion vibrations. The friction pad 120 can be made of an elastic material such as rubber or a highly ductile metal such as lead or copper.

[0076] That is, the material of the friction pad 120 may be a material having relatively high elasticity or high ductility relative to the material of the first damper rod 110 and the second damper rod 130 , so as to absorb vibration while contacting and rubbing with the first damper rod 110 and the second damper rod 130 .

[0077] The material of the friction pad 120 is characterized by long-term use. However, if it is damaged or broken due to an earthquake, the user only needs to replace the friction pad 120, thereby reducing maintenance costs and making maintenance work easier.

[0078] Reference Figure 5 The friction pad 120 may include a pad center hole 121 , a pad middle hole 123 and a pad side hole 125 .

[0079] The pad center hole 121 may be circular and formed at the center of the friction pad 120. The pad side holes 125 may be elliptical and formed in plurality on the outer side of the friction pad 120. The pad middle holes 123 may be elliptical and formed in plurality along the circumferential direction of the friction pad 120 between the pad center hole 121 and the pad side holes 125.

[0080] Among them, reference Figure 1 and Figure 2, it can be confirmed that the friction pad 120 is disposed between the first damper rod 110 and the second damper rod 130 on the damper base 180 .

[0081] Vibration and shaking transmitted from the ground via base 45 in the order of lower frame 43, device body 20, and upper frame 41 due to an earthquake are reduced by frictional resistance due to surface contact between friction pad 120 disposed on the upper portion of damper base 180 and the surfaces facing first damper rod 110 and second damper rod 130. Ultimately, vibration and shaking transmitted upward from lower frame 43 to device body 20 and upper frame 41 are damped throughout all parts of the molded transformer.

[0082] On the other hand, refer to Figure 7 , discloses an exploded perspective view of the first damper rod 110 , the second damper rod 130 and the friction pad 120 .

[0083] The first center hole 111, the pad center hole 121 and the second center hole 131 can be combined and connected by a center bolt 141 and a nut 147. The first center hole 111 is circular and formed on the center side of the first damper rod 110; the pad center hole 121 is circular and formed on the center side of the friction pad 120; the second center hole 131 is circular and formed on the center side of the second damper rod 130.

[0084] The first side hole 115, the pad side hole 125 and the second side hole 135 can be combined and connected by multiple side bolts 145 and nuts 147. The above-mentioned first side hole 115 is circular, and multiple ones are formed along the circumferential direction on the outer side of the above-mentioned first damper rod 110; the above-mentioned pad side hole 125 is elliptical, and multiple ones are formed along the circumferential direction on the outer side of the above-mentioned friction pad 120; the above-mentioned second side hole 135 is elliptical, and multiple ones are formed along the circumferential direction on the above-mentioned second damper rod 130.

[0085] The first middle hole 113, the pad middle hole 123 and the second middle hole 133 can be combined and connected by the middle bolt 143 and the nut 147. The above-mentioned first middle hole 113 is circular, and multiple holes are formed along the circumferential direction between the above-mentioned first center hole 111 and the above-mentioned first side hole 115 on the above-mentioned first damper rod 110; the above-mentioned pad middle hole 123 is elliptical, and multiple holes are formed along the circumferential direction between the above-mentioned pad center hole 121 and the above-mentioned pad side hole 125 on the above-mentioned friction pad 120; the above-mentioned second middle hole 133 is elliptical, and multiple holes are formed along the circumferential direction between the above-mentioned second center hole 131 and the above-mentioned second side hole 135 on the above-mentioned second damper rod 130.

[0086] The pad middle hole 123 and the pad side hole 125 and the second middle hole 133 and the second side hole 135 are elliptical in shape, and a plurality of them are respectively arranged along the circumferential direction on the friction pad 120 and the second damper rod 130 .

[0087] As a result, the intermediate bolts 143 and the side bolts 145 can move in the circumferential direction inside the elliptical hole, thereby alleviating the displacement of the device body 20 in the Y-axis direction.

[0088] The center bolt 141 is combined with the circular hole to serve as a center axis.

[0089] Furthermore, the intermediate bolt 143 and the side bolt 145 are engaged with the oval hole, and thus can slightly move in the circumferential direction around the center bolt 141 as a center axis.

[0090] In this case, since the first and second damper rods 110 and 130 are in surface contact with the friction pad 120, frictional resistance is generated when the intermediate bolt 143 and the side bolt 145 move within the elliptical hole, thereby inhibiting their movement. This action mitigates displacement of the device body 20 in the Y-axis direction.

[0091] The present invention can absorb earthquake energy by utilizing the friction force of the damper, thereby preventing damage to the transformer caused by vibration and shaking during an earthquake.

[0092] on the other hand, Figures 8 to 13 The invention discloses experimental data on the earthquake resistance performance of the earthquake-resistant transformer. The experimental conditions are based on the earthquake certification standard ICC-ES AC156, and the earthquake magnitude is 6.0 to 7.0.

[0093] Figure 8 The experimental data of the seismic performance of the Y-axis displacement varying with time when a 100% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention is disclosed.

[0094] In the experimental data, B represents the Y-axis displacement of the conventional molded transformer, and R represents the Y-axis displacement of the earthquake-resistant transformer of the present invention. In this case, the displacement value is based on the top of the transformer.

[0095] It can be confirmed that under the above experimental conditions, the displacement value of the earthquake-resistant transformer R of the present invention is reduced in the Y-axis direction by about 68% compared with the conventional molded transformer B.

[0096] Figure 9 The experimental data of the seismic performance of the present invention, in which the displacement in the Y-axis direction changes with time, is disclosed when a 200% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention.

[0097] In the experimental data, B represents the Y-axis displacement of the conventional molded transformer, and R represents the Y-axis displacement of the earthquake-resistant transformer of the present invention. In this case, the displacement value is based on the top of the transformer.

[0098] It can be confirmed that under the above experimental conditions, the displacement value of the earthquake-resistant transformer R of the present invention is reduced in the Y-axis direction by about 68% compared with the conventional molded transformer B.

[0099] pass Figure 9 It was confirmed that the earthquake-resistant transformer of the present invention satisfied the unidirectional displacement width of 75 mm (dashed line L) which is a judgment condition of the earthquake resistance test method (Seismic Resistance Test Method 2015 for Broadcasting and Communication Equipment) specified in the standards of the National Radio Research Institute of Korea.

[0100] The exact displacement values ​​of the experimental data are shown in Table 1.

[0101] Table 1

[0102]

[0103] Figure 10 The experimental data of the seismic performance of the present invention, in which the acceleration in the X-axis direction changes with time, is disclosed when a 100% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention.

[0104] In the experimental data, B represents the response acceleration in the X-axis direction of the conventional molded transformer, and R represents the response acceleration in the X-axis direction of the seismic-resistant transformer of the present invention. In this case, the displacement value is based on the top of the transformer.

[0105] It can be confirmed that under the above experimental conditions, the response acceleration value of the earthquake-resistant transformer R of the present invention is reduced in the X-axis direction by about 28% compared with the conventional molded transformer B.

[0106] Figure 11 The experimental data of the seismic performance of the present invention, in which the acceleration in the Y-axis direction changes with time, is disclosed when a 100% earthquake wave that meets the AC156 standard is applied to the seismic transformer of the present invention.

[0107] In the experimental data, B represents the Y-axis response acceleration of the conventional molded transformer, and R represents the Y-axis response acceleration of the seismic-resistant transformer of the present invention. In this case, the displacement value is based on the top of the transformer.

[0108] It can be confirmed that under the above experimental conditions, the response acceleration value of the vibration-resistant transformer R of the present invention is reduced in the Y-axis direction by about 32% compared with the conventional molded transformer B.

[0109] Figure 12 The experimental data of the seismic performance of the seismic transformer of the present invention, in which the acceleration in the X-axis direction changes with time, is disclosed when a 200% earthquake wave conforming to the AC156 standard is applied.

[0110] In the experimental data, B represents the response acceleration in the X-axis direction of the conventional molded transformer, and R represents the response acceleration in the X-axis direction of the seismic-resistant transformer of the present invention. In this case, the displacement value is based on the top of the transformer.

[0111] It can be confirmed that under the above experimental conditions, the response acceleration value of the earthquake-resistant transformer R of the present invention is reduced in the X-axis direction by about 30% compared with the conventional molded transformer B.

[0112] Figure 13 The experimental data of the seismic performance of the present invention, in which the acceleration in the Y-axis direction changes with time, is disclosed when a 200% earthquake wave conforming to the AC156 standard is applied to the seismic transformer of the present invention.

[0113] In the experimental data, B represents the Y-axis response acceleration of the conventional molded transformer, and R represents the Y-axis response acceleration of the seismic-resistant transformer of the present invention. In this case, the displacement value is based on the top of the transformer.

[0114] In this case, it was confirmed that under the above-mentioned experimental conditions, there was no significant difference in the response acceleration value in the Y-axis direction between the conventional molded transformer B and the seismic-resistant transformer R of the present invention.

[0115] The exact displacement values ​​of the experimental data are shown in Table 2.

[0116] Table 2

[0117]

[0118]

[0119] The above matters merely represent specific embodiments of the displacement-controlled seismic-resistant transformer using the friction damper.

[0120] Therefore, it should be noted that those skilled in the art can easily understand that the present invention can be replaced and modified in various forms without departing from the spirit of the present invention as described in the scope of protection claimed in the invention.

Claims

1. A displacement-controlled seismic-resistant transformer using a friction damper, characterized in that: include: Device body; An upper frame is disposed on the upper portion of the device body and is used to fix the device body; a lower frame, disposed at the lower portion of the device body, for fixing the device body; and The friction damper unit is configured in a manner linked to the device body and the ground, and is used to buffer vibrations transmitted from the ground to the device body. The friction damper unit comprises: The damper base is configured on the ground; a support frame connected to the sides of the upper frame; a first damper rod fixed to the upper portion of the damper base via a damper bracket; and The second damper rod has a lower portion connected to the first damper rod and an upper portion connected to the support frame. The damper base supports the lower end of the lower frame and is disposed on the ground; the support frame is connected to both sides of the upper frame. The friction damper unit further includes a friction pad, which is disposed between the first damper rod and the second damper rod and cushions vibrations by contacting and rubbing against the first damper rod and the second damper rod. The friction pad is made of a material having relatively high elasticity or high ductility compared to the material of the first damper rod and the second damper rod. The first center hole, the pad center hole and the second center hole are connected by a center bolt. The first center hole is circular and formed on the center side of the first damper rod; the pad center hole is circular and formed on the center side of the friction pad; the second center hole is circular and formed on the center side of the second damper rod. The first side hole, the pad side hole and the second side hole are connected by a plurality of side bolts. The first side hole is circular and is formed in a plurality of ways along the circumferential direction on the outer side of the first damper rod; the pad side hole is elliptical and is formed in a plurality of ways along the circumferential direction on the outer side of the friction pad; the second side hole is elliptical and is formed in a plurality of ways along the circumferential direction on the outer side of the second damper rod. The first middle hole, the pad middle hole and the second middle hole are connected by middle bolts. The above-mentioned first middle hole is circular, and multiple holes are formed along the circumferential direction between the above-mentioned first center hole and the above-mentioned first side hole on the above-mentioned first damper rod; the above-mentioned pad middle hole is elliptical, and multiple holes are formed along the circumferential direction between the above-mentioned pad center hole and the above-mentioned pad side hole on the above-mentioned friction pad; the above-mentioned second middle hole is elliptical, and multiple holes are formed along the circumferential direction between the above-mentioned second center hole and the above-mentioned second side hole on the above-mentioned second damper rod.

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