Online monitoring device of phase modifier

Abstract

The utility model relates to the technical field of phase modifier monitoring, and discloses an on-line monitoring device of a phase modifier, which comprises a phase modifier body, a rotor is fixedly connected to the end side of the phase modifier body, a lower lantern ring is mounted outside the rotor, an upper lantern ring is detachably mounted in the lower lantern ring, and a connecting column is fixedly connected to the end side of the lower lantern ring. A round frame is fixedly connected to the end side of the connecting column, a detection assembly is movably installed on the round frame, and a vibration reduction assembly is installed below the lower lantern ring. A dual fault early warning mechanism is formed through the monitoring probe and the distance sensor in the vibration reduction assembly, core parameters such as vibration amplitude and frequency of the rotor are monitored in real time, data collected by the monitoring probe and the distance sensor are synchronously transmitted to the data processing system, and the system accurately analyzes and compares whether the rotor vibrates abnormally or not. And an alarm signal can be sent out in time whether the working state of the vibration reduction assembly is abnormal, so that workers can quickly position fault hidden dangers.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of phase modifier monitoring, in particular to an online monitoring device of phase modifier. BACKGROUND

[0002] The phase modifier is one of the key power equipment in the power transmission and distribution system, and its reliability directly relates to the safe and stable operation of the power grid. Some faults of the phase modifier may have some adverse effects on the unit, such as increased or excessive vibration, partial discharge, rotor winding inter-turn short circuit fault, and excessive shaft current, etc. It is necessary to carry out online monitoring on these faults. Once the fault signs are found, the early warning can be sent in time to avoid long-term continuation or further deterioration of the fault to cause serious consequences, which is of great significance to ensure the normal operation of the phase modifier.

[0003] The rotor is the core component of the phase modifier. Once a fault occurs, it will directly affect the normal operation of the phase modifier, and even cause a power grid accident. The rotor is in a long-term high-speed rotating state, and is easily affected by electromagnetic and structure in operation, causing vibration faults. The currently produced phase modifier has occurred several times of vibration deviation and rotor bending accidents in operation, which seriously affects the operation of the equipment and has adverse effects on the operation of the power grid.

[0004] At present, most of the monitoring equipment on the market uses probe scanning monitoring, but due to the structure design, the monitoring probe is difficult to cover all key parts of the phase modifier rotor and body, and there is a monitoring blind area. At the same time, the vibration generated during the operation of the rotor will interfere with the monitoring probe, causing deviation of the monitoring data, which cannot truly and comprehensively reflect the equipment operation state, greatly affecting the accurate judgment and treatment of equipment faults. And the current monitoring relies on a single way, which can only capture part of the operation parameters. When the rotor has abnormal vibration, or the monitoring device itself has abnormal working state due to vibration, component aging, etc., it cannot trigger the early warning in time. This makes it difficult for the staff to quickly locate the fault source, prolongs the equipment fault downtime, and greatly increases the maintenance cost.

[0005] Therefore, we propose an online monitoring device of phase modifier to solve the above problems. Utility model content

[0006] The utility model aims at providing an online monitoring device of phase modifier to solve the problems of insufficient monitoring coverage and stability, single monitoring mode leading to lagging fault early warning, and inconvenient and high-risk rotor maintenance.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] An online monitoring device of a phase modifier comprises a phase modifier body, a rotor fixedly connected to the end side of the phase modifier body, a lower sleeve ring mounted outside the rotor, an upper sleeve ring detachably mounted in the lower sleeve ring, a connecting column fixedly connected to the end side of the lower sleeve ring, a circular frame fixedly connected to the end side of the connecting column, and a detection assembly movably mounted on the circular frame.

[0009] Preferably, a tooth groove is formed in the circular frame, an electric motor is fixedly connected to the sliding seat, a rotating shaft is fixedly connected to the output end of the electric motor, the rotating shaft is rotatably connected to the sliding seat, a gear is fixedly sleeved to the outer ring of the rotating shaft, and the gear is intermeshed with the tooth groove.

[0010] Preferably, a recess is formed in the circular frame, and the limiting pulley is slidably connected to the recess.

[0011] Preferably, a supporting block is fixedly connected to the bottom surface of the sliding seat, and a monitoring probe is mounted to the bottom surface of the supporting block.

[0012] Preferably, the damping assembly comprises a connecting block one fixedly connected to the bottom surface of the lower sleeve ring, a crank hingedly connected to the bottom surface of the connecting block one, a connecting block two hingedly connected to the other end of the crank, a T-shaped sliding block fixedly connected to the bottom of the connecting block two, a fixed rod slidably connected to the T-shaped sliding block, a base fixedly connected to the two sides of the fixed rod, a sliding groove formed in the base, the T-shaped sliding block slidably connected to the sliding groove, and a mounting plate fixedly connected to the two sides of the base.

[0013] Preferably, a damping spring is sleeved to the outer ring of the fixed rod, two T-shaped sliding blocks are symmetrically arranged, two damping springs are correspondingly arranged, one end of each damping spring is fixedly connected to the two surfaces adjacent to the T-shaped sliding block and the base, and a distance sensor is mounted to the side wall of the base.

[0014] Compared with the prior art, the online monitoring device of the phase modifier has the following beneficial effects:

[0015] 1. The circular frame and the detection assembly are designed to realize the omnibearing monitoring of the phase modifier, the circular structure of the circular frame is matched with the tooth groove and the recess, the circular peripheral motion mechanism of the sliding seat driven by the motor and the gear is combined, the monitoring probe can cover each part of the phase modifier body and the rotor, the limiting pulley on the supporting rod is matched with the recess to ensure the stable movement of the sliding seat, the high-sensitivity and high-precision monitoring probe such as a temperature sensor probe, a vibration sensor probe and a current sensor probe is matched, and the running parameters of the phase modifier can be collected in real time and accurately, and reliable data can be provided for the equipment running state evaluation.

[0016] 2. Through the cooperation of the connecting block one, the crank, the connecting block two, the T-shaped slider and the damping spring, the vibration generated by the phase modulation camera is converted into the elastic potential energy of the damping spring, so that the vibration is buffered and attenuated. This not only reduces the influence of vibration on the phase modulation camera body and the surrounding equipment, but also reduces the interference of vibration on the monitoring probe, avoids the deviation of monitoring data caused by vibration, and ensures the accuracy and reliability of monitoring data.

[0017] 3. A double fault warning mechanism is formed by the monitoring probe and the distance sensor in the damping assembly, the vibration amplitude, frequency and other core parameters of the rotor are monitored in real time, the distance sensor continuously monitors the displacement change of the T-shaped slider in the damping assembly, the data collected by the two is transmitted to the data processing system synchronously, and no matter the rotor vibration is abnormal or the working state of the damping assembly is abnormal, an alarm signal can be sent in time through the accurate analysis and comparison of the system, so that the workers can quickly locate the fault hidden danger, take measures in advance, ensure the safe and stable operation of the phase modulation camera, and reduce the downtime loss and maintenance cost caused by equipment failure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0019] Figure 2 It is a detection assembly and damping assembly structure schematic view of the utility model;

[0020] Figure 3 It is a detection assembly structure schematic view of the utility model Figure 1 ;

[0021] Figure 4 It is a detection assembly structure schematic view of the utility model Figure 2 ;

[0022] Figure 5 It is a whole rear view structure schematic view of the utility model.

[0023] In the drawing: 1, phase modulation camera body; 2, rotor; 3, lower sleeve ring; 4, upper sleeve ring; 5, connecting column; 6, round frame; 7, detection assembly; 71, groove; 72, tooth slot; 73, sliding seat; 74, motor; 75, rotating shaft; 76, gear; 77, supporting rod; 78, limiting pulley; 79, supporting block; 710, monitoring probe; 8, damping assembly; 81, connecting block one; 82, crank; 83, connecting block two; 84, T-shaped slider; 85, base; 86, sliding groove; 87, fixed rod; 88, damping spring; 89, distance sensor; 810, mounting plate. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Embodiment one: please refer to Figures 1-5 The online monitoring device of the phase modifier comprises a phase modifier body 1, a rotor 2 fixedly connected to the end side of the phase modifier body 1, a lower sleeve ring 3 installed outside the rotor 2, and an upper sleeve ring 4 detachably installed in the lower sleeve ring 3. The detachable structure formed by the lower sleeve ring 3 and the upper sleeve ring 4 facilitates the installation, disassembly and maintenance of the rotor 2. In actual application, the sizes of the upper sleeve ring 4 and the lower sleeve ring 3 are designed according to the actual size of the rotor 2. When the rotor 2 needs to be overhauled or parts need to be replaced, the upper sleeve ring 4 can be simply disassembled, and the rotor 2 can be conveniently contacted, thereby greatly improving the convenience of equipment maintenance. At the same time, this structural design can also ensure that the upper sleeve ring 4 and the lower sleeve ring 3 tightly cooperate during normal operation, thereby providing stable support and protection for the rotor 2.

[0026] The end side of the lower sleeve 3 is fixedly connected with a connecting column 5, the end side of the connecting column 5 is fixedly connected with a circular frame 6, the circular frame 6 movably installs a detection assembly 7, the circular frame 6 is the installation base of the detection assembly 7, and the circular structure design makes the detection assembly 7 can make circumferential motion around the phase modifier body 1, thereby realizing all-around monitoring of different parts of the phase modifier. The detection assembly 7 comprises a sliding seat 73 movably installed on the circular frame 6, a supporting rod 77 fixedly connected with the sliding seat 73, and a limiting pulley 78 rotatably sleeved with the supporting rod 77. The circular frame 6 is provided with a tooth groove 72, the sliding seat 73 is fixedly connected with a motor 74, the output end of the motor 74 is fixedly connected with a rotating shaft 75, the rotating shaft 75 is rotatably connected with the sliding seat 73, the outer circle of the rotating shaft 75 is fixedly sleeved with a gear 76, the gear 76 is meshed with the tooth groove 72, the circular frame 6 is provided with a groove 71, the limiting pulley 78 is slidably connected with the groove 71, and the supporting rod 77 provides installation support for the limiting pulley 78 and a monitoring probe 710. The material of the supporting rod 77 is selected from high-strength lightweight alloy, so that the strength is ensured and the overall weight is reduced. The limiting pulley 78 cooperates with the groove 71 on the circular frame 6, not only plays a guiding role, ensures the sliding seat 73 to move along the predetermined track, but also effectively limits the movement range of the sliding seat 73, prevents the sliding seat 73 from being separated from the circular frame 6, and improves the safety and stability of the device operation. The bottom surface of the sliding seat 73 is fixedly connected with a supporting block 79, and the bottom surface of the supporting block 79 is provided with the monitoring probe 710. The monitoring probe 710 can be selected from various types according to different monitoring parameters, such as a temperature sensor probe, a vibration sensor probe, a current sensor probe and the like. These probes have the characteristics of high sensitivity and high precision, can collect various parameters in the operation process of the phase modifier in real time and accurately, and transmit the data to the subsequent data processing system.

[0027] Specifically, when the rotor 2 of the phase modifier is monitored, first, the lower sleeve 3 is installed in close contact with the rotor 2, then the upper sleeve 4 is covered to fix it, so that the monitoring assembly is installed on the outer circle of the rotor 2. When the rotor 2 of the phase modifier is driven to operate, the motor 74 is started, the rotating shaft 75 at the driving output end drives the gear 76 to rotate, since the gear 76 is meshed with the tooth groove 72 on the circular frame 6, during the rotation of the gear 76, a driving force in the direction of the tooth groove 72 is generated, thereby pushing the sliding seat 73 to make circumferential motion on the circular frame 6 along the track of the groove 71. During the movement of the sliding seat 73, the limiting pulley 78 on the supporting rod 77 always keeps sliding connection with the groove 71 on the circular frame 6, the limiting pulley 78 plays a guiding and stabilizing role, and ensures that the sliding seat 73 can move smoothly along the predetermined path. At the same time, the monitoring probe 710 fixedly connected with the supporting block 79 on the bottom surface of the sliding seat 73 monitors different parts of the phase modifier body 1 and the rotor 2 in real time along with the movement of the sliding seat 73.

[0028] The monitoring probe 710 can real-time sense the vibration amplitude, frequency and other parameters of the rotor 2, and the distance sensor 89 in the damping assembly 8 can monitor the displacement of the T-shaped slider 84, so that the vibration of the rotor 2 in the running process of the phase modifier body 1 can be comprehensively judged to cause the wear and displacement phenomenon. The data collected by the monitoring probe 710 and the distance sensor 89 are synchronously transmitted to an external data processing system, the system deeply analyzes, processes and stores the data, and accurately compares the data with a preset normal running parameter range. Once the monitoring data exceeds the normal range, whether the rotor 2 vibration detected by the monitoring probe 710 is abnormal or the working state of the damping assembly 8 fed back by the distance sensor 89 is abnormal, the data processing system will immediately issue an alarm signal to remind the staff that the phase modifier may have a fault or an abnormal condition, so that corresponding measures can be taken in time to process, and the safe and stable running of the phase modifier is comprehensively ensured.

[0029] Embodiment two: This embodiment is an improvement on the basis of embodiment one. For details, please refer to Figures 1-5 A damping assembly 8 is installed below the lower sleeve 3, the damping assembly 8 comprises a connecting block one 81 fixedly connected to the bottom surface of the lower sleeve 3, a crank 82 hingedly connected to the bottom surface of the connecting block one 81, a connecting block two 83 hingedly connected to the other end of the crank 82, a T-shaped slider 84 fixedly connected to the bottom of the connecting block two 83, a fixed rod 87 slidably connected in the T-shaped slider 84, the fixed rod 87 penetrating through the two T-shaped sliders 84 to play a guiding and supporting role, the surface of the fixed rod 87 is precisely machined to ensure the sliding fit precision with the inner hole of the T-shaped slider 84, two base seats 85 are fixedly connected to the two sides of the fixed rod 87, a sliding groove 86 is formed in each base seat 85, the T-shaped slider 84 is slidably connected with the sliding groove 86, and the gap between the sliding groove 86 and the T-shaped slider 84 is accurately calculated to ensure smooth sliding of the T-shaped slider 84 and provide certain constraint. Two installation plates 810 are fixedly connected to the two sides of each base seat 85, damping springs 88 are sleeved on the outer circle of the fixed rod 87, two T-shaped sliders 84 are symmetrically arranged, two damping springs 88 are correspondingly arranged, and the damping springs 88 have good elastic recovery performance and fatigue life. One end of each damping spring 88 is fixedly connected to the two surfaces adjacent to the T-shaped slider 84 and the base seat 85, and a distance sensor 89 is installed on the side wall of each base seat 85. The distance sensor 89 adopts high-precision laser ranging or infrared ranging technology and can real-time monitor the relative displacement change between the T-shaped slider 84 and the base seat 85. The sensor has the characteristics of fast response speed and high measurement precision, can convert the collected displacement data into an electric signal, and transmit the electric signal to a subsequent data processing system for analysis.

[0030] When the phase modifier is running, vibration is inevitable, which is transmitted to the damping assembly 8 through the lower sleeve 3, the connecting block one 81 at the bottom of the lower sleeve 3 drives the articulated crank 82 to swing, the swing of the crank 82 in turn drives the connecting block two 83 and the T-shaped slider 84 to slide horizontally in the sliding groove 86 of the base 85, and in the sliding process of the T-shaped slider 84, the damping springs 88 on both sides are compressed or stretched.

[0031] When the vibration of the phase modifier makes the T-shaped slider 84 move outward, the damping springs 88 are compressed, the spring stores elastic potential energy, converts the vibration energy into the elastic potential energy of the spring, so as to slow down the sliding speed of the T-shaped slider 84, when the T-shaped slider 84 slides inward, the damping springs 88 are stretched, and the elastic potential energy is also stored, which hinders the sliding of the T-shaped slider 84, through the compression and stretching of the damping springs 88, the vibration energy is continuously absorbed and released, the vibration of the phase modifier is effectively buffered and attenuated, and the influence of the vibration on the phase modifier body 1 and the surrounding equipment is reduced.

[0032] At the same time, the distance sensor 89 on the side wall of the base 85 continuously monitors the relative displacement between the T-shaped slider 84 and the base 85, under normal circumstances, the displacement of the T-shaped slider 84 in the sliding groove 86 is within a certain range, and the data collected by the distance sensor 89 is also within a normal threshold interval. Once the phase modifier has abnormal vibration, such as sudden increase in vibration amplitude or change in frequency, the displacement of the T-shaped slider 84 will exceed the normal range, and the distance sensor 89 will detect abnormal displacement data and convert it into an electrical signal and transmit it to the data processing system. The data processing system analyzes and processes the signal, and if the vibration is confirmed to be abnormal, an alarm signal will be sent immediately to remind the staff that the phase modifier may have a fault and needs to be checked and maintained. In this way, the damping assembly 8 not only plays a damping role, but also realizes the fault warning function with the help of the distance sensor 89, so as to ensure the stable operation of the phase modifier.

[0033] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0034] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. An on-line monitoring device of a phase modifier, comprising a phase modifier body (1), characterized in that: The end side of the phase modifier body (1) is fixedly connected with a rotor (2), the outer part of the rotor (2) is provided with a lower ring (3), the lower ring (3) is detachably provided with an upper ring (4), the end side of the lower ring (3) is fixedly connected with a connecting column (5), the end side of the connecting column (5) is fixedly connected with a circular frame (6), the circular frame (6) is movably provided with a detection assembly (7), the detection assembly (7) comprises a sliding seat (73) movably arranged on the circular frame (6), a supporting rod (77) is fixedly connected to the sliding seat (73), a limiting pulley (78) is rotatably sleeved on the supporting rod (77), and a damping assembly (8) is arranged below the lower ring (3).

2. An on-line monitoring device for a phase modifier according to claim 1, characterized in that: A gear slot (72) is formed in the circular frame (6), a motor (74) is fixedly connected to the sliding seat (73), a rotating shaft (75) is fixedly connected to the output end of the motor (74), the rotating shaft (75) is rotatably connected to the sliding seat (73), and a gear (76) is fixedly sleeved on the outer ring of the rotating shaft (75). The gear (76) is in meshing connection with the gear slot (72).

3. An on-line monitoring device for a phase modifier according to claim 2, characterised in that: A groove (71) is formed in the circular frame (6), and the limiting pulley (78) is in sliding connection with the groove (71).

4. An on-line monitoring device for a phase modifier according to claim 1, characterized in that: A supporting block (79) is fixedly connected to the bottom surface of the sliding seat (73), and a monitoring probe (710) is arranged on the bottom surface of the supporting block (79).

5. An on-line monitoring device for a phase modifier according to claim 1, characterized in that: The damping assembly (8) comprises a connecting block one (81) fixedly connected to the bottom surface of the lower ring (3), a crank (82) hingedly connected to the bottom surface of the connecting block one (81), a connecting block two (83) hingedly connected to the other end of the crank (82), a T-shaped sliding block (84) fixedly connected to the bottom of the connecting block two (83), a fixed rod (87) slidably connected in the T-shaped sliding block (84), a base (85) fixedly connected to the two sides of the fixed rod (87), a sliding groove (86) formed in the base (85), the T-shaped sliding block (84) in sliding connection with the sliding groove (86), and an installation plate (810) fixedly arranged on the two sides of the base (85).

6. An on-line monitoring device for a phase modifier according to claim 5, characterised in that: A damping spring (88) is sleeved on the outer ring of the fixed rod (87), two T-shaped sliding blocks (84) are symmetrically arranged, two damping springs (88) are correspondingly arranged, one end of the damping spring (88) is fixedly connected to the two surfaces adjacent to the T-shaped sliding block (84) and the base (85), and a distance sensor (89) is arranged on the side wall of the base (85).

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