A transformer vibration dynamic monitoring device and a monitoring method thereof

Abstract

The application discloses a kind of transformer vibration dynamic monitoring devices, comprising: main unit, the main unit includes outer installation shell, inside installation shell is installed in the outer installation shell, motor is installed at the top of the outer installation shell, transformer body is provided in the inside installation shell;Monitoring unit, the monitoring unit includes gear ring, the outer circular surface of the gear ring is fixedly connected with connecting block, the bottom of the connecting block is fixedly connected with support frame, and vibration sensor is fixedly installed at the top of the support frame.The design solves the deficiency under prior art, and multiple vibration sensors can move around transformer body, so that the vibration frequency of transformer body can be dynamically monitored in a wide range.Compared with the existing vibration sensor fixed monitoring mode, it is more comprehensive, which helps workers to judge and analyze the problems of transformer body.The design only uses one motor when controlling the vibration sensor movement, and the circuit control is relatively simple.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a transformer vibration dynamic monitoring device and its monitoring method. Background Technology

[0002] A transformer is a device that transmits and transforms alternating current. Its working principle is based on electromagnetic induction. Under normal working conditions, a transformer is stable, but when some faults occur, the transformer will vibrate.

[0003] One cause of transformer vibration is unbalanced load. During transformer operation, current flows through the main and auxiliary windings. Unbalanced load leads to current imbalance in the main and auxiliary windings, generating unbalanced forces and torques, thus causing transformer vibration. Transformer vibration is also related to the internal insulation material. Defects such as air bubbles and impurities in the insulation material can reduce its strength, making it more susceptible to vibration from electric and magnetic fields. Vibration can also be related to the transformer's fixed support structure. If the fixed support structure is unstable or loose, vibration will occur during operation. Excessive transformer vibration may also be related to the transformer core. Uneven magnetic field distribution or magnetic field leakage in the core can cause it to experience unbalanced forces, resulting in vibration.

[0004] In the current technology, many transformers are equipped with a transformer shell, which is mainly used for safety protection at the transformer operation site. Workers usually also install vibration sensors inside the transformer shell to monitor the vibration frequency of the transformer, allowing workers to monitor the transformer's operating status in real time. However, existing vibration sensors are usually fixed in a certain position inside the transformer shell. Since the vibration frequencies of different parts of the transformer vary greatly, a fixed-position vibration sensor cannot collect the vibration frequency of the transformer from all directions, resulting in a certain error between the monitoring results and the actual situation. This is not conducive to workers quickly diagnosing and resolving transformer faults. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a transformer vibration dynamic monitoring device and its monitoring method, which aims to solve the problem that "existing vibration sensors are usually fixedly installed at a certain position inside the transformer shell, while the vibration frequencies of different parts of the transformer are quite different. Vibration sensors in fixed positions cannot collect the vibration frequencies of the transformer from all directions, resulting in a certain error between the monitoring results and the actual situation, which is not conducive to the rapid investigation and resolution of transformer faults by the staff".

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] A transformer vibration dynamic monitoring device, comprising:

[0010] The main unit includes an outer mounting shell, an inner mounting shell is installed inside the outer mounting shell, a motor is installed on the top of the outer mounting shell, a transformer body is installed inside the inner mounting shell, the bottom of the transformer body is fixedly connected to the bottom of the inner cavity of the outer mounting shell, and the motor is used to pull the inner mounting shell to move in the vertical direction.

[0011] The monitoring unit includes a toothed ring, with connecting blocks fixedly connected to the outer circumference of the toothed ring. Four connecting blocks are arranged in an array around the circumference of the toothed ring. A support frame is fixedly connected to the bottom of each connecting block, and a vibration sensor is fixedly installed on the top of the support frame. The toothed ring is used to pull the vibration sensor to rotate around the circumference of the toothed ring. The vibration sensor is used to monitor the vibration frequency of the transformer body.

[0012] As a preferred embodiment of the transformer vibration dynamic monitoring device of the present invention, a fixing ring is provided extending outward from the bottom of the inner mounting shell, and a threaded rod is provided inside the outer mounting shell. One end of the threaded rod is rotatably connected to the bottom of the inner cavity of the outer mounting shell, and the other end of the threaded rod passes through the top of the outer mounting shell and extends upward. The surface of the threaded rod is threadedly connected to the inside of the fixing ring.

[0013] In a preferred embodiment of the transformer vibration dynamic monitoring device of the present invention, four threaded rods are provided and arranged in an array around the circumference of the outer mounting shell. A pulley is fixedly connected to the other end of each threaded rod, and a belt for power transmission is provided between the four pulleys.

[0014] As a preferred embodiment of the transformer vibration dynamic monitoring device of the present invention, a motor frame is fixedly connected to the outer surface of the outer mounting shell, the motor is fixedly installed on the top of the motor frame, and the output end of the motor is fixedly connected to the other end of a threaded rod.

[0015] As a preferred embodiment of the transformer vibration dynamic monitoring device of the present invention, the inner wall of the inner mounting shell is provided with a guide groove, the guide groove is an annular groove structure, and a guide strip is fixedly connected to the side of the support frame away from the center of the toothed ring. The guide strip is located in the guide groove, and the surface of the guide strip is slidably connected to the groove wall.

[0016] In a preferred embodiment of the transformer vibration dynamic monitoring device of the present invention, a rack is provided inside the inner mounting shell, the rack is arranged vertically, and the bottom of the rack is fixedly connected to the bottom of the inner cavity of the outer mounting shell. A first positioning frame, a second positioning frame, and a third positioning frame are fixedly connected to the inner wall of the inner mounting shell. A rotating shaft is rotatably connected inside the first positioning frame, a transmission rod is rotatably connected inside the second positioning frame, and a rotating shaft is rotatably connected inside the third positioning frame.

[0017] In a preferred embodiment of the transformer vibration dynamic monitoring device of the present invention, a first spur gear is fixedly connected to one end of the rotating shaft, a first bevel gear is fixedly connected to the other end of the rotating shaft, a second bevel gear is fixedly connected to one end of the transmission rod, a third bevel gear is fixedly connected to the other end of the transmission rod, a fourth bevel gear is fixedly connected to one end of the rotating shaft, and a second spur gear is fixedly connected to the other end of the rotating shaft. The first bevel gear meshes with the second bevel gear, the third bevel gear meshes with the fourth bevel gear, the first spur gear meshes with a rack, and the second spur gear meshes with a ring gear.

[0018] In a preferred embodiment of the transformer vibration dynamic monitoring device of the present invention, the method of the transformer vibration dynamic monitoring device includes the following steps:

[0019] S1: The motor pulls the threaded rod to reciprocate between forward and reverse rotation around its own axis. While the threaded rod rotates, it pulls the inner mounting shell to reciprocate vertically upward and downward.

[0020] S2: During the vertical movement of the inner mounting shell, the traction gear ring rotates along its own circumference. At the same time as the gear ring rotates, the vibration sensor rotates synchronously along the circumference of the gear ring.

[0021] S3: The vibration sensor moves both vertically and rotates along the circumference of the toothed ring, enabling large-scale dynamic monitoring of the vibration frequency of the transformer body.

[0022] The beneficial effects of this invention are:

[0023] In use, the motor drives the threaded rod to rotate around its own axis. Simultaneously, the rotation of the threaded rod drives the inner mounting shell to move vertically upwards synchronously. The movement of the inner mounting shell, in turn, drives the vibration sensor to move vertically upwards. During the vertical upward movement of the first spur gear, due to the meshing of the first spur gear and the rack, the first spur gear and the rotating shaft rotate around the axis of the rotating shaft. The rotation of the rotating shaft drives the transmission rod to rotate synchronously around its own axis. The rotation of the transmission rod drives the rotating shaft to rotate synchronously around its own axis. The rotation of the rotating shaft, through the second spur gear, drives the gear ring to move synchronously along its circumference. The movement of the gear ring, in turn, drives the support frame to move synchronously along the circumference of the gear ring, thus transmitting the vibration... During its upward movement, the vibration sensor also moves along the circumference of the gear ring. When the motor reverses direction, the vibration sensor moves downwards while still moving along the circumference of the gear ring. This design overcomes the shortcomings of existing technologies, allowing multiple vibration sensors to move around the transformer body, thus enabling large-scale dynamic monitoring of the transformer's vibration frequency. This is more comprehensive than the existing method of monitoring with fixed vibration sensors, and helps staff to diagnose and analyze problems with the transformer body. In addition, this design uses only one motor to control the movement of the vibration sensors, making the circuit control simpler, easier for staff to manage, and reducing costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0027] Figure 3 This is a cross-sectional view of the outer mounting shell and the inner mounting shell of the present invention;

[0028] Figure 4 This is a schematic diagram of the toothed ring structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the monitoring unit structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the monitoring unit structure of the present invention.

[0031] In the diagram: 100, Main unit; 101, Outer mounting shell; 102, Inner mounting shell; 103, Motor; 104, Fixing ring; 105, Guide groove; 106, Threaded rod; 107, Motor frame; 108, Transformer body; 109, Pulley; 110, Belt; 200, Monitoring unit; 201, Gear ring; 202, Connecting block; 203, Support frame; 204, Vibration sensor; 205, Guide bar; 206, Rack; 207, First positioning frame; 208, Second positioning frame; 209, Third positioning frame; 210, Rotating shaft; 211, Transmission rod; 212, Rotating shaft; 213, First spur gear; 214, First bevel gear; 215, Second bevel gear; 216, Third bevel gear; 217, Fourth bevel gear; 218, Second spur gear. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0036] Reference Figure 1-6 The present invention provides a transformer vibration dynamic monitoring device, comprising:

[0037] The main unit 100 includes an outer mounting shell 101, an inner mounting shell 102 installed inside the outer mounting shell 101, a motor 103 installed on the top of the outer mounting shell 101, a transformer body 108 installed inside the inner mounting shell 102, and the bottom of the transformer body 108 fixedly connected to the bottom of the inner cavity of the outer mounting shell 101. The motor 103 is used to pull the inner mounting shell 102 to move in the vertical direction.

[0038] The monitoring unit 200 includes a toothed ring 201. Connecting blocks 202 are fixedly connected to the outer surface of the toothed ring 201. Four connecting blocks 202 are arranged in an array around the circumference of the toothed ring 201. A support frame 203 is fixedly connected to the bottom of the connecting blocks 202. A vibration sensor 204 is fixedly installed on the top of the support frame 203. The toothed ring 201 is used to pull the vibration sensor 204 to rotate around the circumference of the toothed ring 201. The vibration sensor 204 is used to monitor the vibration frequency of the transformer body 108. The vibration sensor 204 is a non-contact vibration sensor. Non-contact vibration sensors are existing sensor technology and will not be described in detail here.

[0039] Furthermore, a retaining ring 104 extends outward from the bottom of the inner mounting shell 102, and a threaded rod 106 is provided inside the outer mounting shell 101. One end of the threaded rod 106 is rotatably connected to the bottom of the inner cavity of the outer mounting shell 101, and the other end of the threaded rod 106 passes through the top of the outer mounting shell 101 and extends upward. The surface of the threaded rod 106 is threadedly connected to the inside of the retaining ring 104. Four threaded rods 106 are provided, and the four threaded rods 106 are arranged in an array around the circumference of the outer mounting shell 101. The other end of the threaded rod 106 is fixedly connected to a pulley 109, and a belt 110 for power transmission is provided between the four pulleys 109. A motor frame 107 is fixedly connected to the outer surface of the housing 101. The motor 103 is fixedly installed on the top of the motor frame 107. The motor 103 is a stepper motor that can rotate in both directions. The output end of the motor 103 is fixedly connected to the other end of a threaded rod 106. The motor 103 can drive the threaded rod 106 to rotate around its own axis. The rotation of the threaded rod 106 drives all the threaded rods 106 to rotate synchronously around their own axes through the pulley 109 and the belt 110. While the threaded rods 106 are rotating, they can drive the inner housing 102 to move vertically upward synchronously through the fixing ring 104. If the motor 103 rotates in the opposite direction, the inner housing 102 will move vertically downward.

[0040] Furthermore, the inner wall of the inner mounting shell 102 is provided with a guide groove 105, which is an annular groove structure. A guide strip 205 is fixedly connected to the side of the support frame 203 away from the center of the toothed ring 201. The guide strip 205 is located in the guide groove 105, and the surface of the guide strip 205 is slidably connected to the groove wall of the guide groove 105. During the movement of the toothed ring 201 along its own circumference, the guide strip 205 can slide synchronously along the guide groove 105. The guide strip 205 and the guide groove 105 cooperate with each other to ensure the stability of the movement of the toothed ring 201 and the support frame 203.

[0041] Furthermore, a rack 206 is provided inside the inner mounting shell 102. The rack 206 is arranged vertically, and its bottom is fixedly connected to the bottom of the inner cavity of the outer mounting shell 101. A first positioning frame 207, a second positioning frame 208, and a third positioning frame 209 are fixedly connected to the inner wall of the inner mounting shell 102. A rotating shaft 210 is rotatably connected inside the first positioning frame 207. A transmission rod 211 is rotatably connected inside the second positioning frame 208. A rotating shaft 212 is rotatably connected inside the third positioning frame 209. A first spur gear 213 is fixedly connected to one end of the rotating shaft 210, and a first bevel gear 214 is fixedly connected to the other end of the rotating shaft 210. A second bevel gear 215 is fixedly connected to one end of the transmission rod 211, and a third bevel gear 216 is fixedly connected to the other end of the transmission rod 211. A fourth bevel gear 217 is fixedly connected to one end of the rotating shaft 212, and a third bevel gear 216 is fixedly connected to the other end of the rotating shaft 212. Two spur gears 218, a first bevel gear 214 meshing with a second bevel gear 215, a third bevel gear 216 meshing with a fourth bevel gear 217, a first spur gear 213 meshing with a rack 206, and a second spur gear 218 meshing with a gear ring 201. During the vertical movement of the first spur gear 213, due to the meshing between the first spur gear 213 and the rack 206, the first spur gear 213 and the rotating shaft 210 can rotate around the axis of the rotating shaft 210. The rotation of the rotating shaft 210 drives the transmission rod 211 to rotate synchronously around its own axis through the first bevel gear 214 and the second bevel gear 215. The rotation of the transmission rod 211 drives the rotating shaft 212 to rotate synchronously around its own axis through the third bevel gear 216 and the fourth bevel gear 217. The rotation of the rotating shaft 212 drives the gear ring 201 to move synchronously along its own circumference through the second spur gear 218.

[0042] Furthermore, the method for dynamic monitoring of transformer vibration includes the following steps:

[0043] S1: The motor 103 pulls the threaded rod 106 to reciprocate between rotating forward and reverse around its own axis. While the threaded rod 106 is rotating, it pulls the inner mounting shell 102 to reciprocate vertically upward and downward.

[0044] S2: During the vertical movement of the inner mounting shell 102, the toothed ring 201 is pulled to rotate along its own circumference. At the same time as the toothed ring 201 rotates, the vibration sensor 204 is pulled to rotate synchronously along the circumference of the toothed ring 201.

[0045] S3: The vibration sensor 204 moves in the vertical direction and rotates in the circumferential direction of the toothed ring 201. The vibration sensor 204 performs large-scale dynamic monitoring of the vibration frequency of the transformer body 108.

[0046] In specific use, motor 103 drives a threaded rod 106 to rotate around its own axis. The rotation of one threaded rod 106 drives all the threaded rods 106 to rotate synchronously around their own axes through pulley 109 and belt 110. At the same time, the rotation of the threaded rods 106 drives the inner mounting shell 102 to move vertically upward synchronously through the fixing ring 104. The movement of the inner mounting shell 102 drives the entire monitoring unit 200 except for the rack 206 to move vertically upward synchronously, thereby causing the vibration sensor 204 to move vertically upward. During the vertical upward movement of the first spur gear 213 of the monitoring unit 200, since the first spur gear 213 meshes with the rack 206, the first spur gear 213 and the rotating shaft 210 rotate around the axis of the rotating shaft 210. The rotation of the rotating shaft 210 is transmitted through the first cone... Gear 214 and the second bevel gear 215 drive the transmission rod 211 to rotate synchronously around its own axis. The rotation of the transmission rod 211 drives the rotating shaft 212 to rotate synchronously around its own axis through the third bevel gear 216 and the fourth bevel gear 217. The rotation of the rotating shaft 212 drives the gear ring 201 to move synchronously along its own circumference through the second flat gear 218. The movement of the gear ring 201 drives the support frame 203 to move synchronously along the circumference of the gear ring 201 through the connecting block 202. Thus, the vibration sensor 204 moves along the circumference of the gear ring 201 while moving upward. Similarly, when the motor 103 rotates in the opposite direction, the vibration sensor 204 moves along the circumference of the gear ring 201 while moving downward, thereby realizing large-range dynamic monitoring of the vibration frequency of the transformer body 108.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A transformer vibration dynamic monitoring device, characterized in that, include: The main unit (100) includes an outer mounting shell (101), an inner mounting shell (102) is installed inside the outer mounting shell (101), a motor (103) is installed on the top of the outer mounting shell (101), a transformer body (108) is provided inside the inner mounting shell (102), the bottom of the transformer body (108) is fixedly connected to the bottom of the inner cavity of the outer mounting shell (101), and the motor (103) is used to pull the inner mounting shell (102) to move in the vertical direction; The monitoring unit (200) includes a toothed ring (201), and a connecting block (202) is fixedly connected to the outer circular surface of the toothed ring (201). There are four connecting blocks (202), and the four connecting blocks (202) are arranged in an array around the circumference of the toothed ring (201). A support frame (203) is fixedly connected to the bottom of the connecting block (202), and a vibration sensor (204) is fixedly installed on the top of the support frame (203). The toothed ring (201) is used to pull the vibration sensor (204) to rotate around the circumference of the toothed ring (201). The vibration sensor (204) is used to monitor the vibration frequency of the transformer body (108). The inner mounting shell (102) has a fixing ring (104) extending outward from the bottom. The outer mounting shell (101) has a threaded rod (106) inside. One end of the threaded rod (106) is rotatably connected to the bottom of the inner cavity of the outer mounting shell (101). The other end of the threaded rod (106) passes through the top of the outer mounting shell (101) and extends upward. The surface of the threaded rod (106) is threadedly connected to the inside of the fixing ring (104). The inner wall of the inner mounting shell (102) is provided with a guide groove (105). The guide groove (105) has an annular groove structure. A guide strip (205) is fixedly connected to the side of the support frame (203) away from the center of the toothed ring (201). The guide strip (205) is located in the guide groove (105), and the surface of the guide strip (205) is slidably connected to the groove wall of the guide groove (105). The inner mounting shell (102) is provided with a rack (206) inside. The rack (206) is arranged vertically. The bottom of the rack (206) is fixedly connected to the bottom of the inner cavity of the outer mounting shell (101). The inner wall of the inner mounting shell (102) is fixedly connected with a first positioning frame (207), a second positioning frame (208) and a third positioning frame (209). The first positioning frame (207) is rotatably connected with a rotating shaft (210). The second positioning frame (208) is rotatably connected with a transmission rod (211). The third positioning frame (209) is rotatably connected with a rotating shaft (212). One end of the rotating shaft (210) is fixedly connected to a first spur gear (213), and the other end of the rotating shaft (210) is fixedly connected to a first bevel gear (214). One end of the transmission rod (211) is fixedly connected to a second bevel gear (215), and the other end of the transmission rod (211) is fixedly connected to a third bevel gear (216). One end of the rotating shaft (212) is fixedly connected to a fourth bevel gear (217), and the other end of the rotating shaft (212) is fixedly connected to a second spur gear (218). The first bevel gear (214) meshes with the second bevel gear (215), the third bevel gear (216) meshes with the fourth bevel gear (217), the first spur gear (213) meshes with the rack (206), and the second spur gear (218) meshes with the ring gear (201).

2. The transformer vibration dynamic monitoring device according to claim 1, characterized in that, Four threaded rods (106) are provided, and the four threaded rods (106) are arranged in an array around the circumference of the outer mounting shell (101). The other end of the threaded rod (106) is fixedly connected to a pulley (109), and a belt (110) for power transmission is provided between the four pulleys (109).

3. The transformer vibration dynamic monitoring device according to claim 1, characterized in that, The outer surface of the outer mounting housing (101) is fixedly connected to a motor frame (107), and the motor (103) is fixedly installed on the top of the motor frame (107). The output end of the motor (103) is fixedly connected to the other end of a threaded rod (106).

4. The transformer vibration dynamic monitoring device according to claim 1, characterized in that, The method for dynamic monitoring of transformer vibration includes the following steps: S1: The motor (103) pulls the threaded rod (106) to reciprocate between rotating forward and reverse around its own axis. While the threaded rod (106) is rotating, it pulls the inner mounting shell (102) to reciprocate vertically upward and downward. S2: During the vertical movement of the inner mounting shell (102), the traction gear ring (201) rotates along its own circumference. At the same time as the gear ring (201) rotates, the traction vibration sensor (204) rotates synchronously along the circumference of the gear ring (201). S3: The vibration sensor (204) moves in the vertical direction and rotates in the circumferential direction of the toothed ring (201). The vibration sensor (204) performs large-scale dynamic monitoring of the vibration frequency of the transformer body (108).

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