Vibration isolation and noise reduction device for power transformer

Abstract

The utility model relates to the technical field of vibration isolation and noise reduction devices for transformers, in particular to a vibration isolation and noise reduction device for a power transformer. According to the technical scheme, the transformer comprises a case and a shock absorber fixedly installed on the case and further comprises an installation plate installed on the shock absorber, the installation plate is used for fixedly installing a transformer body and a gravity fastening mechanism, and the gravity fastening mechanism is installed in the case and fastens a transformer through the gravity of the transformer body. According to the gravity fastening mechanism, the transformer can be fixed by utilizing the gravity of the transformer, and the transformer is always pressed on the mounting plate under the action of the gravity, so that the pressing plate always applies pressure to the transformer, and the transformer and the mounting plate are kept in contact and fastened; therefore, damping system failure caused by stable connection of the transformer and the mounting plate is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer vibration isolation and noise reduction devices, in particular to a power transformer vibration isolation and noise reduction device. Background Art

[0002] The immersion transformer may vibrate during operation. This vibration is mainly caused by the electromagnetic field inside the transformer and the influence of external environmental factors. The change of the electromagnetic field inside the transformer will generate alternating magnetic flux, which will pass through the winding and core of the transformer, thereby inducing an alternating potential in the winding. Since the temperature, current and magnetic flux of the winding and core are constantly changing, tiny vibrations will occur.

[0003] Generally, shock absorbers are installed at the bottom of the transformer to reduce the vibration generated by the transformer. However, the connection between the oil-immersed transformer and the shock absorber contains some metal connectors. These metal connectors may become loose under long-term vibration conditions. If they are not discovered and handled in time, the entire shock absorption system may fail. Summary of the invention

[0004] The utility model aims to solve the problems existing in the background technology and proposes a vibration isolation and noise reduction device for a power transformer which can prevent loosening between the transformer and the shock absorbing device under long-term vibration.

[0005] The technical solution of the utility model is a vibration isolation and noise reduction device for a power transformer, comprising a chassis, a shock absorber fixedly mounted on the chassis, and also comprising:

[0006] The shock absorber is provided with a mounting plate, and the mounting plate is used for fixing and mounting the transformer body;

[0007] A gravity fastening mechanism is installed in the chassis, and the gravity fastening mechanism uses the gravity of the transformer body to fasten the transformer.

[0008] Optionally, the shock absorber includes a base, a shock absorbing spring fixedly mounted on the base, the other end of the shock absorbing spring is fixedly connected to a mounting plate, and a plurality of guide rods are slidably mounted between the mounting plate and the base.

[0009] Optionally, the gravity fastening mechanism includes a first slider fixedly mounted on the mounting plate, a support seat fixedly mounted on the base, a connecting rod rotatably mounted on the support seat, a second slider slidably mounted on the upper side, a transmission rod fixedly mounted on the second slider, a first sleeve fixedly mounted in the chassis and slidably connected to the transmission rod, a connecting block fixedly mounted on one end of the transmission rod, a transmission rod slidably mounted on the connecting block and rotatably connected to the chassis, a second sleeve fixedly mounted in the chassis, a connecting rod slidably mounted on the transmission rod and slidably connected to the second sleeve, and a pressure plate fixedly mounted on the connecting rod.

[0010] Optionally, the pressing plate is located above the mounting plate, and the pressing plate is made of elastic rubber material.

[0011] Optionally, fastening bolts are threadedly connected to both sides of the mounting plate, and the fastening bolts fix the transformer body to the mounting plate.

[0012] Optionally, the support seat is installed on a side close to the first sliding block.

[0013] Optionally, the connecting block and the connecting rod are both provided with a sliding groove which is slidably connected to the transmission rod.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] The transformer can be fixed by utilizing the gravity of the transformer through the gravity fastening mechanism. Under the action of gravity, the transformer will always be pressed on the mounting plate, so that the pressure plate will always exert a pressure on the transformer, so that the transformer and the mounting plate remain in contact and fastened, thereby preventing the failure of the shock absorption system caused by the firm connection between the transformer and the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of an embodiment of the utility model is given;

[0017] Figure 2 A schematic diagram of the internal structure of the utility model is given;

[0018] Figure 3 A schematic diagram of the three-dimensional structure of the utility model is given;

[0019] Figure 4 Provide the utility model Figure 2 A partial enlarged view of point A in the middle.

[0020] Figure numerals: 1. chassis; 2. base; 201. mounting plate; 202. fastening bolt; 203. shock-absorbing spring; 204. guide rod; 3. first slider; 301. support seat; 302. connecting rod; 303. first sleeve; 304. transmission rod; 305. second slider; 306. connecting block; 307. transmission rod; 308. connecting rod; 309. pressure plate; 310. second sleeve. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example

[0023] like Figure 1-2 As shown, the utility model proposes a vibration isolation and noise reduction device for a power transformer, comprising a chassis 1, a shock absorber fixedly mounted on the chassis 1, a mounting plate 201 mounted on the shock absorber, and the mounting plate 201 is used to fix and install the transformer body. The shock absorber comprises a base 2, a shock absorbing spring 203 fixedly mounted on the base 2, the other end of the shock absorbing spring 203 is fixedly connected to the mounting plate 201, and a plurality of guide rods 204 are slidably mounted between the mounting plate 201 and the base 2. Among them, fastening bolts 202 are threadedly connected on both sides of the mounting plate 201, and the fastening bolts 202 fix the transformer body to the mounting plate 201. The transformer body is placed on the mounting plate 201, and the transformer body is fixedly connected to the mounting plate 201 by the fastening bolts 202. When the transformer vibrates, the mounting plate 201 will be driven to move toward or away from the base 2, and the shock absorbing spring 203 will be used for shock absorption.

[0024] like Figure 2-4As shown, it also includes: a gravity fastening mechanism, which is installed in the chassis 1 and uses the gravity of the transformer body to fasten the transformer. The gravity fastening mechanism includes a first slider 3 fixedly installed on the mounting plate 201, a support seat 301 fixedly installed on the base 2, a connecting rod 302 rotatably installed on the support seat 301, a second slider 305 slidably installed on the upper side, a transmission rod 304 fixedly installed on the second slider 305, a first sleeve 303 fixedly installed in the chassis 1 and slidably connected to the transmission rod 304, a connecting block 306 fixedly installed at one end of the transmission rod 304, a transmission rod 307 slidably installed on the connecting block 306 and rotatably connected to the chassis 1, a second sleeve 310 fixedly installed in the chassis 1, a connecting rod 308 slidably installed on the transmission rod 307 and slidably connected to the second sleeve 310, and a pressing plate 309 fixedly installed on the connecting rod 308. After the transformer is placed on the mounting plate 201, the weight of the transformer will compress the shock absorbing spring 203, so that the mounting plate 201 moves toward the direction close to the base 2, thereby driving the first slider 3 to move downward, thereby squeezing the connecting rod 302 and sliding on the connecting rod 302, so that the connecting rod 302 rotates around the connection with the support seat 301 as the axis, thereby squeezing the second slider 305 and sliding along the second slider 305, thereby driving the transmission rod 304 to rise, and then driving the connection block 306 to rise, thereby driving the transmission rod 307 to move upward. Flip and slide along the transmission rod 307, so that the transmission rod 307 drives the connecting rod 308 to move downward along the second sleeve 310, thereby driving the pressing plate 309 to press down, so that the pressing plate 309 presses and fixes the connecting seat of the transformer, so that the transformer can be fixed by the gravity of the transformer. Under the action of gravity, the transformer will always be pressed on the mounting plate 201, so that the pressing plate 309 always applies a pressure to the transformer, so that the transformer and the mounting plate 201 are kept in contact and fastened, thereby preventing the failure of the shock absorption system caused by the stable connection between the transformer and the mounting plate 201;

[0025] The pressing plate 309 is located above the mounting plate 201 and is made of an elastic rubber material. When the pressing plate 309 applies pressure to the transformer, elastic deformation occurs, thereby preventing rigid impact on the transformer and preventing damage to the transformer. The support seat 301 is installed on the side close to the first slider 3. The slight displacement of the mounting plate 201 caused by slight vibration can be amplified. The connecting block 306 and the connecting rod 308 are both provided with a sliding groove that is slidably connected to the transmission rod 307.

[0026] Working principle: Place the transformer body on the mounting plate 201, and fix the transformer body to the mounting plate 201 by fastening bolts 202. When the transformer vibrates, it will drive the mounting plate 201 to move toward or away from the base 2, and the shock-absorbing spring 203 will be used for shock absorption. After the transformer is placed on the mounting plate 201, the gravity of the transformer will compress the shock-absorbing spring 203, so that the mounting plate 201 moves toward the base 2, thereby driving the first slider 3 to move downward, so that the connecting rod 302 is connected to the support seat 301. The shaft rotates at the position where the transmission rod 304 is located to rise, thereby driving the transmission rod 307 to flip, so that the transmission rod 307 drives the connecting rod 308 to move downward along the second sleeve 310, thereby driving the pressure plate 309 to press down, so that the pressure plate 309 presses and fixes the transformer, and the transformer will always be pressed on the mounting plate 201 under the action of gravity, so that the pressure plate 309 always applies a pressure to the transformer, so that the transformer and the mounting plate 201 are kept in contact and fastened, thereby preventing the shock absorption system from failing due to the firm connection between the transformer and the mounting plate 201.

[0027] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A vibration isolation and noise reduction device for a power transformer, comprising a chassis (1) and a shock absorber fixedly mounted on the chassis (1), characterized in that: Also includes: A mounting plate (201) is mounted on the shock absorber, and the mounting plate (201) is used to fix the transformer body; A gravity fastening mechanism is installed in the chassis (1), and the gravity fastening mechanism uses the gravity of the transformer body to fasten the transformer.

2. The vibration isolation and noise reduction device for power transformer according to claim 1, characterized in that: The shock absorber comprises a base (2), a shock absorbing spring (203) fixedly mounted on the base (2), the other end of the shock absorbing spring (203) being fixedly connected to a mounting plate (201), and a plurality of guide rods (204) being slidably mounted between the mounting plate (201) and the base (2).

3. The vibration isolation and noise reduction device for power transformer according to claim 2, characterized in that: The gravity fastening mechanism comprises a first slider (3) fixedly mounted on the mounting plate (201), a support seat (301) fixedly mounted on the base (2), a connecting rod (302) rotatably mounted on the support seat (301), a second slider (305) slidably mounted on the upper side, a transmission rod (304) fixedly mounted on the second slider (305), a first sleeve (303) fixedly mounted in the chassis (1) and slidably connected to the transmission rod (304), a connecting block (306) fixedly mounted on one end of the transmission rod (304), a transmission rod (307) slidably mounted on the connecting block (306) and rotatably connected to the chassis (1), a second sleeve (310) fixedly mounted in the chassis (1), a connecting rod (308) slidably mounted on the transmission rod (307) and slidably connected to the second sleeve (310), and a pressing plate (309) fixedly mounted on the connecting rod (308).

4. The vibration isolation and noise reduction device for power transformer according to claim 3, characterized in that: The pressing plate (309) is located above the mounting plate (201), and the pressing plate (309) is made of elastic rubber material.

5. The vibration isolation and noise reduction device for power transformer according to claim 3, characterized in that: Fastening bolts (202) are threadedly connected to both sides of the mounting plate (201), and the fastening bolts (202) fix the transformer body to the mounting plate (201).

6. The vibration isolation and noise reduction device for power transformer according to claim 4, characterized in that: The support seat (301) is installed on a side close to the first sliding block (3).

7. The vibration isolation and noise reduction device for power transformer according to claim 6, characterized in that: The connecting block (306) and the connecting rod (308) are both provided with a sliding groove which is slidably connected to the transmission rod (307).

Images