Distribution transformer vibration alarm device
By installing a housing, warning rod, and locking mechanism inside the transformer and directly connecting it to the damper, abnormal vibrations are captured and the transmitter is triggered to unlock, thus solving the problem of transformer vibration signal attenuation and achieving high-precision fault monitoring and signal transmission.
Patent Information
- Application Number
- CN202511048239.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-11-21
AI Technical Summary
In existing technologies, transformer vibration signals are easily attenuated during transmission, leading to inaccurate monitoring and affecting the accuracy of fault diagnosis.
A vibration alarm device for a distribution transformer was designed, including a housing, an alarm rod, a locking mechanism, and a vibration component. By directly connecting a damper on the winding core, the device uses a mechanical structure to capture abnormal vibrations and trigger an unlocking switch, causing the transmitter to move outside the transformer to emit a signal, thus avoiding signal obstruction.
It improves the accuracy of transformer winding core vibration monitoring, promptly captures abnormal vibrations caused by faults, ensures signal transmission strength and stability, and provides reliable fault early warning.
Smart Images
Figure CN120997984A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of transformer maintenance, and particularly relates to a power distribution transformer vibration alarm device. BACKGROUND
[0002] In the power system, the transformer core will produce periodic expansion and contraction deformation due to the magnetostriction effect under the continuous action of the alternating magnetic field; the electric power generated by the current in the winding promotes the vibration of the winding. When the transformer has faults such as winding short circuit and loose core, the vibration characteristics will be significantly abnormal, so accurate monitoring of the transformer vibration is the key to realize fault early warning. In the prior art, a vibration sensor is usually used to detect the vibration state of the transformer. After the vibration sensor converts the detected vibration signal into an electric signal, the data needs to be transmitted to the monitoring terminal by means of a signal transmitting device. However, when the vibration sensor and the signal transmitting device are installed inside the transformer, the complex mechanical structure inside the transformer will not only affect the collection of the vibration signal, but also shield the signal transmission, resulting in the weakening of the signal strength and unstable transmission. After the vibration sensor and the signal transmitting device are installed outside the transformer, the vibration signal will be significantly attenuated during the process of being transmitted from the inside of the transformer to the vibration sensor outside the oil tank wall, so that the signal collected by the vibration sensor cannot accurately reflect the vibration inside the transformer, affecting the judgment of the vibration state inside the transformer and the accuracy of fault diagnosis. SUMMARY
[0003] The embodiment of the present application provides a power distribution transformer vibration alarm device, which aims to improve the accuracy of monitoring the vibration of the winding core of the transformer.
[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a power distribution transformer vibration alarm device is provided, which comprises a shell, a warning rod, a locking mechanism and a vibration assembly; the shell is arranged on the inner side wall of the transformer, and the shell is provided with an elastic support; the warning rod is slidingly arranged in the shell and connected with the elastic support, the warning rod is provided with a transmitter, the warning rod has a locking state of compressing the elastic support to drive the transmitter into the shell, and also has an unlocking state of driving the transmitter to extend out of the shell under the pushing of the elastic support; the locking mechanism is arranged in the shell and connected with the warning rod, and is used for locking the locking state of the warning rod, the locking mechanism has an unlocking switch for unlocking the locking state under stress; the vibration assembly is arranged on the damper inside the transformer and is spaced apart from the unlocking switch, and the vibration assembly is used for triggering the unlocking switch when the damper abnormally vibrates.
[0005] In a possible implementation, a support is horizontally arranged inside the shell, a sliding groove is vertically arranged on the support, and the warning rod is slidingly connected in the sliding groove; the locking mechanism comprises a positioning assembly, a transmission assembly, and an unlocking switch; the positioning assembly is arranged on the support and is used for connecting the warning rod and separating from the warning rod when stressed; the transmission assembly is arranged on the support and is in transmission connection with the positioning assembly; and the unlocking switch is arranged on the side of the shell close to the vibration assembly and is in transmission connection with the transmission assembly.
[0006] In some embodiments, the unlocking switch comprises a first sliding cylinder, a first push block, and a push rod; the first sliding cylinder is horizontally arranged on the side of the shell close to the vibration assembly; the first push block is slidingly arranged in the first sliding cylinder and is connected with the side wall of the shell through a first elastic element; and the push rod is horizontally arranged on the side of the first push block close to the shell and extends into the shell to be connected with the transmission assembly.
[0007] For example, the vibration assembly comprises a mounting frame, a second sliding cylinder, and a second push block; the mounting frame is arranged on the damper; the second sliding cylinder is horizontally arranged on the mounting frame and is spaced apart from the first sliding cylinder; and the second push block is slidingly arranged in the second sliding cylinder and is connected with the mounting frame through a second elastic element, and the second push block is horizontally aligned with the first push block.
[0008] For example, a first sliding channel is vertically arranged on the support; the transmission assembly comprises a push element and a transmission element; the push element is vertically slidingly arranged in the first sliding channel; the transmission element is horizontally rotatably arranged on the support along a direction perpendicular to the length direction of the support, and has two mutually perpendicular hinged ends, one of which is hinged with the push rod through a first connecting rod, and the other of which is hinged with the bottom of the push element through a second connecting rod; and when the unlocking switch is triggered, the push rod pushes the push element upward along the first sliding channel through the transmission element.
[0009] In a possible implementation, a second sliding channel is horizontally arranged on the side of the sliding groove close to the first sliding channel, and the positioning assembly comprises a plug-in element and a rotating plate; the plug-in element is slidingly arranged in the second sliding channel and is used for connecting the warning rod and separating from the warning rod when stressed; the rotating plate is horizontally rotatably arranged on the support along a direction perpendicular to the length direction of the support, and one end thereof is located above the push element and the other end thereof is hinged with the plug-in element through a third connecting rod; and when the unlocking switch is triggered, the push element pushes one end of the rotating plate upward and makes the other end of the rotating plate descend and pull the plug-in element to separate from the warning rod.
[0010] In some embodiments, a third elastic element is horizontally arranged on the plug-in element and is connected with the inner side wall of the second sliding channel.
[0011] Illustratively, the warning rod comprises a first sliding block and a limiting rod; the first sliding block is slidingly connected in the sliding groove and abuts against the elastic support, and the first sliding block is provided with a press switch; the limiting rod is vertically arranged on the first sliding block, the top of the limiting rod is provided with a transmitter, and a plurality of limiting grooves are arranged on the limiting rod along the length direction of the limiting rod and are in plug-in cooperation with the plug-in part.
[0012] For example, the first sliding block is internally provided with a power supply, and the top of the first sliding block is provided with a press switch; when the warning rod is in the unlocked state, the press switch abuts against the inner top wall of the transformer to make the power supply conduct with the transmitter.
[0013] In a possible implementation, the elastic support is provided with a second sliding block, and the second sliding block is slidingly connected in the sliding groove.
[0014] The power distribution transformer vibration alarm device provided by the present application has the beneficial effects that, compared with the prior art, the housing is arranged on the inner side wall of the transformer, the warning rod is slidingly abutted against the elastic support, so that the transmitter on the warning rod moves along with the warning rod; the locking mechanism locks the warning rod, so that the warning rod is in the locked state fixed in the housing; the vibration assembly is directly connected with the damper installed on the winding core, and when the damper abnormally vibrates, the vibration assembly can accurately capture the vibration on the damper and trigger the unlocking switch of the locking mechanism to unlock the locked state of the warning rod, so that the warning rod switches to the unlocked state of moving out of the transformer, and the transmitter can transmit signals to the monitoring terminal outside the transformer.
[0015] The vibration assembly is directly connected with the damper installed on the winding core, which can improve the accuracy of monitoring the vibration of the winding core of the transformer, timely and accurately capture the abnormal vibration caused by faults such as winding short circuit and loose core, and provide reliable protection for the safe and stable operation of the transformer. The warning rod drives the transmitter to move out of the transformer, which can avoid the shielding of the signals transmitted by the transmitter by the transformer, improve the signal transmission strength and stability, ensure that the monitoring terminal can normally receive the signals transmitted by the transmitter, and improve the accuracy of monitoring the vibration of the winding core of the transformer. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 A perspective structural schematic view of the power distribution transformer vibration alarm device provided by the embodiment of the present application when installed in the transformer is shown in the figure; Figure 2 A perspective structural schematic view of the power distribution transformer vibration alarm device provided by the embodiment of the present application is shown in the figure; Figure 3 A side view structural schematic view of the power distribution transformer vibration alarm device provided by the embodiment of the present application is shown in the figure; Figure 4 A perspective structural schematic view of the locking mechanism used by the embodiment of the present application is shown in the figure; Figure 5 A perspective view of a positioning assembly used in an embodiment of the present application; Figure 6 A perspective view of a warning rod used in an embodiment of the present application; Figure 7 A front view of a first sliding block used in an embodiment of the present application; Figure 8 A front view of an elastic support used in an embodiment of the present application; In the figure: 10, a housing; 11, an elastic support; 111, a second sliding block; 12, a support; 13, a sliding groove; 14, a first sliding channel; 15, a second sliding channel; 20, a warning rod; 21, a sensor; 22, a first sliding block; 23, a limiting rod; 231, a limiting groove; 24, a power supply; 25, a press switch; 30, a locking mechanism; 31, an unlocking switch; 311, a first sliding cylinder; 312, a first push block; 313, a push rod; 314, a first elastic member; 32, a transmission assembly; 321, a push member; 322, a transmission member; 323, a first connecting rod; 324, a second connecting rod; 33, a positioning assembly; 331, a plug-in member; 332, a rotating plate; 333, a third connecting rod; 334, a third elastic member; 40, a vibration assembly; 41, a mounting frame; 42, a second sliding cylinder; 43, a second push block; 44, a second elastic member; 50, a transformer; 60, a damper. DETAILED DESCRIPTION
[0017] In order to make the technical problems solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.
[0018] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or several of the features.
[0019] Please refer to Figures 1 to 8The power distribution transformer 50 vibration alarm device provided by the application is described. The power distribution transformer 50 vibration alarm device comprises a shell 10, a warning rod 20, a locking mechanism 30 and a vibration assembly 40. The shell 10 is arranged on the inner side wall of the transformer 50, and the shell 10 is provided with an elastic support 11. The warning rod 20 is slidingly arranged in the shell 10 and connected with the elastic support 11. The warning rod 20 is provided with a transmitter. The warning rod 20 has a locking state of compressing the elastic support 11 to drive the transmitter into the shell 10, and has an unlocking state of driving the transmitter to extend out of the shell 10 under the pushing of the elastic support 11. The locking mechanism 30 is arranged in the shell 10 and connected with the warning rod 20, and is used for locking the locking state of the warning rod 20. The locking mechanism 30 has an unlocking switch 31 for unlocking the locking state. The vibration assembly 40 is arranged on the damper 60 in the transformer 50 and is spaced apart from the unlocking switch 31. The vibration assembly 40 is used for triggering the unlocking switch 31 when the damper 60 abnormally vibrates.
[0020] It should be noted that the shell 10 is fixed to the inner side wall of the transformer 50, and the top wall of the transformer 50 is provided with an opening suitable for the warning rod 20 to pass through. The bottom of the warning rod 20 abuts against the top of the elastic support 11. When the warning rod 20 is locked by the locking mechanism 30, the elastic support 11 can be elongated and push the warning rod 20 to move upward along the sliding groove 13, so that the transmitter at the top of the warning rod 20 extends out of the opening. The transmitter can be a wireless signal transmitting module, which can transmit wireless signals to a monitoring terminal.
[0021] The vibration assembly 40 is spaced apart from the unlocking switch 31. The winding core generates vibration when working. The damper 60 in direct contact with the winding core vibrates with the winding core. The vibration assembly 40 directly connected with the damper 60 also vibrates. The vibration generated by the winding core when working normally is within a normal vibration range. When the vibration is within the vibration range, the damper 60 can absorb part of the vibration energy generated by the winding core and generate normal vibration itself. When the transformer 50 has faults such as winding short circuit and loose core, the vibration is intensified, and more vibration energy is transmitted to the damper 60, which causes the damper 60 to vibrate intensively, resulting in abnormal vibration of the damper 60. When the damper 60 abnormally vibrates, the vibration assembly 40 directly connected with the damper 60 vibrates intensively, the displacement generated by the vibration increases, and the unlocking switch 31 can be triggered, so that the warning rod 20 is unlocked.
[0022] Compared with the prior art, the power distribution transformer 50 vibration alarm device provided by the application has the shell 10 arranged on the inner side wall of the transformer 50, the warning rod 20 is in abutment with the elastic support 11, so that the transmitter on the warning rod 20 moves along with the warning rod 20, the locking mechanism 30 locks the warning rod 20, so that the warning rod 20 is in the locked state fixed in the shell 10, and the vibration assembly 40 is directly connected with the damper 60 arranged on the winding core. When the damper 60 abnormally vibrates, the vibration assembly 40 can accurately capture the vibration on the damper 60 and trigger the unlocking switch 31 of the locking mechanism 30 to unlock the locked state of the warning rod 20, so that the warning rod 20 switches to the unlocked state in which the transmitter moves out of the transformer 50, and the transmitter can transmit signals to the monitoring terminal outside the transformer 50.
[0023] The vibration assembly 40 is directly connected with the damper 60 arranged on the winding core, which can improve the accuracy of monitoring the vibration of the winding core of the transformer 50, timely and accurately capture the abnormal vibration caused by faults such as winding short circuit and loose core, and provide reliable protection for the safe and stable operation of the transformer 50.
[0024] The warning rod 20 drives the transmitter to move out of the transformer 50, which can avoid the shielding of the signals transmitted by the transmitter by the transformer 50, improve the signal transmission strength and stability, ensure that the monitoring terminal can normally receive the signals transmitted by the transmitter, and improve the accuracy of monitoring the vibration of the winding core of the transformer 50.
[0025] Please refer to Figure 2 The shell 10 is internally horizontally provided with a support 12, the support 12 is vertically provided with a sliding groove 13, and the warning rod 20 is slidingly connected in the sliding groove 13; the locking mechanism 30 comprises a positioning assembly 33, a transmission assembly 32 and an unlocking switch 31; the positioning assembly 33 is arranged on the support 12 and is used for connecting the warning rod 20 and separating from the warning rod 20 under stress; the transmission assembly 32 is arranged on the support 12 and is in transmission connection with the positioning assembly 33; and the unlocking switch 31 is arranged on one side of the shell 10 close to the vibration assembly 40 and is in transmission connection with the transmission assembly 32.
[0026] It should be noted that the support 12 is horizontally fixed in the shell 10 and serves as a mounting basis of the transmission assembly 32 and the positioning assembly 33 in the locking mechanism 30, which can ensure the stability of the transmission path of each assembly. One end of the sliding groove 13 is arranged on the support 12, and the other end is arranged around the opening at the top of the transformer 50, which can limit the sliding direction of the warning rod 20. The unlocking switch 31 is arranged on one side of the shell 10 close to the vibration assembly 40 and is horizontally aligned with the vibration assembly 40, directly facing the vibration direction of the damper 60. When the damper 60 abnormally vibrates, the vibration assembly 40 can vibrate and realize the unlocking of the unlocking switch 31.
[0027] When the damper 60 abnormally vibrates, the vibration assembly 40 receives the vibration energy on the damper 60 and generates displacement to contact the unlocking switch 31, and the vibration energy can be transmitted to the positioning assembly 33 through the transmission assembly 32, so that the positioning assembly 33 is separated from the warning rod 20, and the unlocking of the warning rod 20 is realized. The abnormal vibration of the damper 60 is monitored through mechanical transmission, without the participation of electronic components, avoiding the interference of the strong electromagnetic environment inside the transformer 50 on the unlocking mechanism, and being suitable for long-term stable operation.
[0028] Please refer to Figure 3 The unlocking switch 31 comprises a first sliding cylinder 311, a first push block 312 and a push rod 313. The first sliding cylinder 311 is horizontally arranged on the side of the shell 10 close to the vibration assembly 40. The first push block 312 is slidingly arranged in the first sliding cylinder 311 and connected to the inner side wall of the shell 10 through a first elastic element 314. The push rod 313 is horizontally arranged on the side of the first push block 312 close to the shell 10 and extends into the shell 10 to be connected with the transmission assembly 32.
[0029] It should be noted that the first sliding cylinder 311 is horizontally fixed to the side wall of the shell 10 close to the vibration assembly 40, forming a sliding track of the first push block 312, and the axis thereof is aligned with the movement direction of the vibration assembly 40. The first push block 312 is slidingly arranged in the first sliding cylinder 311, with one end facing the vibration assembly 40 and the other end connected to the inner side wall of the shell 10 through the first elastic element 314. The push rod 313 is horizontally fixed to the side of the first push block 312 close to the inside of the shell 10, extends into the shell 10 through the inner wall of the sliding cylinder, and the distal end is connected with the transmission assembly 32.
[0030] When the winding core normally works, the first elastic element 314 is in a natural elongation state. When the damper 60 abnormally vibrates, the vibration assembly 40 vibrates and displaces to push the first push block 312, the first push block 312 compresses the first elastic element 314 in the sliding cylinder and slides into the shell 10, and the first push block 312 can drive the push rod 313 to move synchronously into the shell 10, the push rod 313 pushes the transmission assembly 32 to trigger the unlocking of the warning rod 20 in the locked state. The first elastic element 314 releases the elastic potential energy after compression to push the first push block 312 and the push rod 313 to reset to the initial position.
[0031] The first sliding cylinder 311 is horizontally aligned and separately arranged with the vibration assembly 40, avoiding that the damper 60 directly transmits vibration energy to the shell 10 when generating abnormal vibration, avoiding the attenuation of vibration energy, making the device more accurate when the damper 60 abnormally vibrates, and improving the accuracy of judging the vibration state of the winding core. The first elastic member 314 not only provides buffering for the first pushing block 312 to avoid component damage caused by rigid collision; but also enables the first pushing block 312 to reset after being abutted by the vibration assembly 40, avoiding that the locking mechanism cannot reset after unlocking.
[0032] Please refer to Figure 3 The vibration assembly 40 includes a mounting frame 41, a second sliding cylinder 42, and a second pushing block 43; the mounting frame 41 is arranged on the damper 60; the second sliding cylinder 42 is horizontally arranged on the mounting frame 41 and is opposite to the first sliding cylinder 311; the second pushing block 43 is slidingly arranged in the second sliding cylinder 42 and is connected with the mounting frame 41 through a second elastic member 44, and the second pushing block 43 is horizontally aligned with the first pushing block 312.
[0033] It should be noted that the mounting frame 41 is fixed on the damper 60 inside the transformer 50 and can vibrate synchronously with the damper 60. The second sliding cylinder 42 is horizontally fixed on the mounting frame 41 and is opposite to the first sliding cylinder 311 at the other end, and the axis thereof is horizontally aligned with the axis of the first sliding cylinder 311. The second pushing block 43 is slidingly arranged in the second sliding cylinder 42, one end thereof faces the first pushing block 312, and the other end is connected with the mounting frame 41 through the second elastic member 44. The second pushing block 43 is opposite to the first pushing block 312 in the horizontal direction, and the spacing therebetween can accommodate the displacement generated by the damper 60 when normally vibrating. The second elastic member 44 can enable the second pushing block 43 to reciprocate in the second sliding cylinder 42 after receiving the vibration energy of the damper 60.
[0034] When the winding core normally works, the second pushing block 43 reciprocates in the second sliding cylinder 42 following the vibration of the damper 60 and can maintain a spacing with the first pushing block 312. When the damper 60 abnormally vibrates, the second pushing block 43 receives a larger vibration energy, the displacement of reciprocation becomes larger, can slide out of the second sliding cylinder 42 and slide towards the shell 10, the second pushing block 43 pushes the first pushing block 312 and compresses the first elastic member 314, triggering the subsequent unlocking process.
[0035] The mounting frame 41 is directly mounted on the damper 60, which can avoid the attenuation of the vibration signal transmitted through the internal structure of the transformer 50, and ensure that the abnormal vibration energy is efficiently transmitted to the second push block 43 through the first push block 312. The second push block 43 is separated from the first push block 312, and only when the damper 60 abnormally vibrates, the second push block 43 can contact the first push block 312, avoiding the transmission of vibration energy to the locking mechanism when the winding core normally works, reducing the vibration of the locking mechanism 30, avoiding the adverse effects of long-term receiving of vibration inside the shell 10 on the locking mechanism 30, and prolonging the service life of the device.
[0036] Please refer to Figure 3 The bracket 12 is vertically provided with a first slide 14; the transmission assembly 32 comprises a push piece 321 and a transmission piece 322; the push piece 321 is vertically and slidingly arranged in the first slide 14; the transmission piece 322 is horizontally and rotationally arranged on the bracket 12 in a direction perpendicular to the length direction of the bracket 12, and has two mutually perpendicular hinged ends, one of which is hinged to the push rod 313 through a first connecting rod 323, and the other is hinged to the bottom of the push piece 321 through a second connecting rod 324; when the unlocking switch 31 is triggered, the push rod 313 pushes the push piece 321 upward along the first slide 14 through the transmission piece 322.
[0037] It should be noted that the first slide 14 is vertically fixed on the bracket 12, which can provide a vertical sliding guide track for the push piece 321, and the axis thereof is parallel to the sliding direction of the warning rod 20. The push piece 321 is arranged in the first slide 14 and can vertically slide up and down along the slide, and the bottom thereof is hinged to the second connecting rod 324 of the transmission piece 322. The transmission piece 322 is horizontally and rotationally arranged on the bracket 12, and the rotation axis thereof is perpendicular to the length direction of the bracket 12, i.e. perpendicular to the horizontal movement direction of the push rod 313, and has two mutually perpendicular hinged ends, one of which is vertically downward and is hinged to the push rod 313 through the first connecting rod 323 and can receive the horizontal driving force of the push rod 313; the other horizontal hinged end is hinged to the bottom of the push piece 321 through the second connecting rod 324 and can output a vertical displacement to the push piece 321.
[0038] When the damper 60 abnormally vibrates, the push rod 313 moves horizontally into the shell 10, the first connecting rod 323 moves with the push rod 313, and pushes the vertically downward hinged end of the transmission piece 322 to make the transmission piece 322 rotate around its axis; the horizontal hinged end of the transmission piece 322 rotates and drives the second connecting rod 324 to move, which pushes the push piece 321 to slide upward along the first slide 14. After the push piece 321 slides upward, it directly acts on the positioning assembly 33 to realize the separation of the positioning assembly 33 and the warning rod 20, and completes the unlocking of the warning rod 20.
[0039] The vertical hinged end design of the transmission member 322 converts the horizontal linear motion of the push rod 313 into the vertical linear motion of the push member 321 to adapt to the unlocking requirement of the positioning assembly 33. Moreover, the linkage structure does not need electronic components to participate, avoiding electromagnetic interference in the transformer 50, and the rotation axis of the transmission member 322 is fixed to the bracket 12, so that the motion trajectory is stable and is not prone to failure in long-term use.
[0040] Please refer to Figure 5 , the second slide 15 is horizontally arranged on the side of the chute 13 close to the first slide 14, the positioning assembly 33 includes a plug-in member 331 and a rotating plate 332; the plug-in member 331 is horizontally slidably arranged in the second slide 15, and is used for connecting the warning rod 20 and separating from the warning rod 20 under stress; the rotating plate 332 is horizontally rotatably arranged on the bracket 12 along a direction perpendicular to the length direction of the bracket 12, and one end is located above the push member 321, and the other end is hingedly connected with the plug-in member 331 through a third connecting rod 333; when the unlocking switch 31 is triggered, the push member 321 pushes one end of the rotating plate 332 upward, and the other end of the rotating plate 332 is lowered to pull the plug-in member 331 to separate from the warning rod 20.
[0041] It should be noted that the second slide 15 is horizontally fixed to the side wall of the chute 13 close to the first slide 14, is perpendicular to the first slide 14, and can provide a horizontal sliding track for the plug-in member 331. The plug-in member 331 is arranged in the second slide 15, one end is used for locking the warning rod 20, and the other end is hingedly connected with the rotating plate 332 through the third connecting rod 333. The rotating plate 332 is horizontally rotatably arranged on the bracket 12, and the rotation axis is perpendicular to the length direction of the bracket 12; one end of the rotating plate 332 is located directly above the push member 321 and can receive the vertical thrust of the push member 321; the other end is hingedly connected with the plug-in member 331 through the third connecting rod 333 and can output the horizontal pulling force to the plug-in member 331.
[0042] When the push member 321 slides along the first slide 14, the top of the push member 321 abuts against one end of the rotating plate 332 and applies an upward thrust. The rotating plate 332 rotates around the fixed shaft as a fulcrum and can form a lever effect; the end of the rotating plate 332 pushed by the push member 321 is raised to drive the other end to be pressed downward, and the plug-in member 331 is pulled to slide along the second slide 15 away from the warning rod 20 through the third connecting rod 333, so as to realize the unlocking of the warning rod 20. The warning rod 20 slides along the chute 13 under the action of the elastic support 11.
[0043] The vertical movement of the pushing piece 321 drives the rotating plate 332 to rotate, and in turn drives the plug-in piece 331 to move horizontally, converting the vertical displacement of the pushing piece 321 into the horizontal sliding of the plug-in piece 331, ensuring the unlocking of the warning rod 20. The rotating plate 332 only triggers rotation when the pushing piece 321 slides, and always keeps the locking of the warning rod 20 under the action of its own gravity in the normal state, avoiding the false unlocking of the warning rod 20 due to the normal vibration of the transformer 50.
[0044] Please refer to Figure 5 , the plug-in piece 331 is horizontally provided with a third elastic piece 334 connected with the inner side wall of the second sliding channel 15.
[0045] It should be noted that the third elastic piece 334 can be a spring horizontally arranged on the plug-in piece 331, one end of which is fixedly connected with the side surface of the plug-in piece 331, and the other end of which is fixedly connected with the inner side wall of the second sliding channel 15. The installation direction of the third elastic piece 334 is consistent with the sliding direction of the plug-in piece 331. When the abnormal vibration of the damper 60 triggers the sliding of the pushing piece 321, the rotating plate 332 rotates to pull the plug-in piece 331 to slide away from the warning rod 20, the third elastic piece 334 is stretched and stores elastic potential energy. When the pushing piece 321 of the transmission assembly 32 falls, the rotating plate 332 loses the pushing force and reversely rotates under the action of the potential energy of the third elastic piece 334, the third elastic piece 334 pulls the plug-in piece 331 to reset along the second sliding channel 15, and the plug-in piece 331 is repositioned at the locking position.
[0046] When the abnormal vibration of the damper 60 causes the plug-in piece 331 to slide quickly, the third elastic piece 334 can absorb part of the impact energy, avoiding the wear or jam caused by the rigid collision between the plug-in piece 331 and the second sliding channel 15, and prolonging the service life of the mechanical components.
[0047] Please refer to Figure 6 , the warning rod 20 comprises a first sliding block 22 and a limiting rod 23; the first sliding block 22 is slidingly connected in the sliding groove 13 and abuts against the elastic support 11, and the first sliding block 22 is provided with a press switch 25; the limiting rod 23 is vertically arranged on the first sliding block 22, the top of the limiting rod 23 is provided with a transmitter, and a plurality of limiting grooves 231 are arranged on the limiting rod 23 along the length direction of the limiting rod 23, and the limiting grooves 231 are in plug-in cooperation with the plug-in piece 331.
[0048] It should be noted that the first slider 22 is slidingly embedded in the sliding groove 13, the bottom surface is in abutment with the top of the elastic support 11, and the top surface is fixedly connected with the limiting rod 23; the top surface of the first slider 22 is provided with a press switch 25, which corresponds to the top wall in the transformer 50, and when the slider slides to the top end of the sliding groove 13, the press switch 25 is triggered by the top wall. The limiting rod 23 is vertically fixed on the top surface of the first slider 22 and located on one side of the press switch 25, and the top end is provided with a transmitter; a plurality of limiting grooves 231 are formed in the length direction of the limiting rod 23, and the hole positions are horizontally aligned with the plug-in parts 331 in the second sliding groove 15, so that the plug-in parts 331 are inserted and locked.
[0049] When the winding core works normally, the plug-in part 331 can be inserted into the uppermost limiting groove 231 of the limiting rod 23, the first slider 22 is fixed at a specific position in the sliding groove 13, the elastic support 11 is in a compressed state, the transmitter is located inside the transformer 50, and the press switch 25 is not triggered. When the damper 60 generates an abnormal vibration, the plug-in part 331 is separated from the limiting groove 231, the elastic support 11 releases potential energy, and pushes the first slider 22 to slide upward along the sliding groove 13. The plug-in part 331 is reset and inserted into the second limiting groove 231. When the damper 60 continuously generates abnormal vibration, the plug-in part 331 is sequentially inserted and separated from each limiting groove 231, so that the limiting rod 23 can drive the transmitter to move upward synchronously until the top surface of the slider abuts against the top end of the sliding groove 13; at this time, the press switch 25 is pressed by the top wall in the transformer 50, and the power supply 24 is turned on to start the transmitter.
[0050] If an accidental non-fault vibration occurs, such as a normal start-up impact of the transformer 50, the plug-in part 331 is reset and locked after single unlocking, and the device will not misreport an alarm; only when the winding core vibration is continuously abnormal can multi-stage unlocking be completed, and the alarm reliability is improved.
[0051] The limiting groove 231 and the plug-in part 331 can be designed as an asymmetric structure with a flat bottom and an inclined top. When the limiting rod 23 is located inside the sliding groove 13, the plug-in part 331 is inserted and matched with the limiting groove 231 to lock the limiting rod 23; when the warning rod 20 is in the unlocked state, the limiting rod 23 drives the transmitter to move out of the transformer 50 and alarms, the operator maintains the transformer 50, and after the maintenance is completed, the operator presses the limiting rod 23 downward, the side wall of the limiting rod 23 pushes the top inclined surface of the plug-in part 331, so that the plug-in part 331 slides away from the sliding groove 13, and the plug-in part 331 can be inserted into the sliding groove 13 from top to bottom to realize quick reset.
[0052] Please refer to Figure 7 , the first slider 22 is internally provided with a power supply 24, and the top of the first slider 22 is provided with a press switch 25; when the warning rod 20 is in the unlocked state, the press switch 25 abuts against the top wall in the transformer 50 to make the power supply 24 conductive with the transmitter.
[0053] It should be noted that the power supply 24 is built inside the first slider 22 to provide power for the transmitter; the positive pole is connected to the input end of the press switch 25 through a wire, and the negative pole is connected to the ground end of the transmitter. The press switch 25 is fixed to the top surface of the first slider 22, and forms a series circuit with the power supply 24 and the transmitter; the press switch 25 is in an open state in a normal state, and is pressed and closed by the inner top wall of the transformer 50 when the slider slides to the top end of the sliding groove 13.
[0054] When the warning rod 20 is locked in the initial position, the press switch 25 is kept away from the top wall of the transformer 50, the press switch 25 is open, the power supply 24 is not connected to the circuit of the transmitter, and power consumption in a non-alarm state is avoided. When the damper 60 continuously vibrates abnormally, the warning rod 20 moves up step by step, the transmitter moves out of the transformer 50, and the top surface of the slider abuts against the inner top wall of the transformer 50, the press switch 25 is pressed and closed by the top wall, the power supply 24 supplies power to the transmitter, and the transmitter transmits an alarm signal to the monitoring terminal. After the fault is eliminated, the warning rod 20 is manually reset to the initial position, the press switch 25 is open, the circuit is powered off, and the transmitter stops working.
[0055] The trigger power supply design is adopted to avoid energy consumption generated by the continuous power supply of the traditional sensor 21, and to prolong the service life of the power supply 24. The mechanical structure is adopted to trigger the press switch 25, no additional signal processing circuit is needed, the interference of the strong electromagnetic environment inside the transformer 50 on the electronic switch is avoided, and the stable triggering of the power supply is ensured.
[0056] Please refer to Figure 8 , the second slider 111 is arranged on the elastic supporting piece 11 and is slidably connected in the sliding groove 13.
[0057] It should be noted that the elastic supporting piece 11 can be a gas pressure rod provided with a spring, and the two can cooperate to increase the elastic force of the elastic supporting piece 11 itself. The second slider 111 can limit the sliding direction of the elastic supporting piece 11, so as to avoid deflection during the compression process.
[0058] When the damper 60 vibrates abnormally, the plug-in part 331 is separated from the limiting groove 231, the elastic supporting piece 11 releases the elastic potential energy to push the first slider 22 to slide up, and the second slider 111 synchronously slides along the sliding groove 13 to provide guidance and support for the elastic supporting piece 11; when the operator presses the reset warning rod 20 downward, the second slider 111 moves downward with the elastic supporting piece 11 and returns to the bottom of the sliding groove 13 for the next triggering and energy storage.
[0059] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A vibration alarm device for distribution transformers, characterized in that, include: A housing is located on the inner wall of the transformer, and the housing is provided with elastic support members; A warning bar is slidably disposed on the housing and connected to the elastic support member. The warning bar is provided with a transmitter. The warning bar has a locking state that compresses the elastic support member to drive the transmitter into the housing, and an unlocking state that drives the transmitter out of the housing under the push of the elastic support member. A locking mechanism is provided inside the housing and connected to the warning rod for locking the warning rod in a locked state. The locking mechanism has an unlocking switch that unlocks the locked state when force is applied. A vibration assembly is disposed on the damper inside the transformer and is spaced opposite to the unlocking switch. The vibration assembly is used to trigger the unlocking switch when the damper vibrates abnormally.
2. The distribution transformer vibration alarm device as described in claim 1, characterized in that, A horizontally arranged bracket is provided inside the housing, and a vertically arranged sliding groove is provided on the bracket. The warning rod is slidably connected to the sliding groove. The locking mechanism includes a positioning component, a transmission component, and an unlocking switch. The positioning component is located on the bracket and is used to connect to the warning rod and separate from the warning rod when force is applied. The transmission component is located on the bracket and is drively connected to the positioning component. The unlocking switch is located on the side of the housing near the vibration component and is drively connected to the transmission component.
3. The distribution transformer vibration alarm device as described in claim 2, characterized in that, The unlocking switch includes: The first sliding cylinder is horizontally positioned on the side of the housing near the vibration assembly; The first push block is slidably disposed inside the first slide cylinder and connected to the side wall of the housing through the first elastic element; A push rod is horizontally positioned on the side of the first push block near the housing and extends into the housing to connect with the transmission assembly.
4. The distribution transformer vibration alarm device as described in claim 3, characterized in that, The vibration assembly includes: Mounting bracket, provided on the damper; The second slide cylinder is horizontally mounted on the mounting bracket and is spaced apart from the first slide cylinder. The second push block is slidably disposed inside the second slide cylinder and connected to the mounting bracket through the second elastic element. The second push block is horizontally aligned with the first push block.
5. The distribution transformer vibration alarm device as described in claim 3, characterized in that, The bracket is vertically spaced with first slide rails; the transmission assembly includes: The pusher is vertically slidably disposed within the first slide rail; A transmission component is horizontally rotatably mounted on the support along a direction perpendicular to the length of the support. The transmission component has two mutually perpendicular hinged ends. One of the hinged ends is hinged to the push rod via a first connecting rod, and the other hinged end is hinged to the bottom of the pusher via a second connecting rod. When the unlocking switch is triggered, the push rod pushes the pusher to slide upward along the first slide rail via the transmission component.
6. The distribution transformer vibration alarm device as described in claim 5, characterized in that, A second slide rail is horizontally arranged on the side of the slide rail closest to the first slide rail, and the positioning component includes: A connector is horizontally slidably disposed within the second slide rail. The connector is used to connect to the warning bar and to separate from the warning bar when force is applied. The rotating plate is horizontally rotatably mounted on the bracket along the length direction perpendicular to the bracket, with one end located above the pusher and the other end hinged to the connector via a third connecting rod. When the unlocking switch is triggered, the pusher pushes one end of the rotating plate upward and lowers the other end of the rotating plate, pulling the connector apart from the warning rod.
7. The distribution transformer vibration alarm device as described in claim 6, characterized in that, The connector is provided with a third elastic element horizontally, and the third elastic element is connected to the inner wall of the second slide.
8. The distribution transformer vibration alarm device as described in claim 6, characterized in that, The warning bar includes: The first slider is slidably connected in the groove and abuts against the elastic support member. A push switch is provided on the first slider. A limiting rod is vertically mounted on the first slider. The transmitter is located at the top of the limiting rod. Multiple limiting grooves are spaced apart along the length of the limiting rod, and the limiting grooves are inserted into the connector.
9. The distribution transformer vibration alarm device as described in claim 8, characterized in that, The first slider has a power supply inside and a push switch on the top of the first slider; When the warning lever is in the unlocked state, the push switch abuts against the inner top wall of the transformer to connect the power supply to the transmitter.
10. The distribution transformer vibration alarm device as described in claim 2, characterized in that, The elastic support is provided with a second slider, which is slidably connected to the groove.