A turbine-based shaft vibration and bearing vibration synergy monitoring architecture, system and method

Abstract

The present invention discloses a turbine-based shaft vibration and bearing vibration coordinated monitoring architecture, system and method, including: an assembly base structure; a shaft vibration electric monitoring structure, fixedly connected to the assembly base structure and facing the transmission main shaft; a bearing vibration coordinated measuring seat structure, which is transmission-arranged with the assembly base structure; a shaft vibration transmission component structure, which is transmission-assembled on the transmission main shaft, and the other end cooperates with the bearing vibration coordinated measuring seat structure; a bearing vibration electric monitoring structure, the monitoring part of which is contact-fixed to the assembly base structure; a positioning measuring seat structure, which is fixedly arranged with the foundation ground; a bearing vibration transmission component structure, which is transmission-assembled on the assembly base structure, and the other end cooperates with the positioning measuring seat structure. The problem that the prior art solves the problem that when monitoring the relative shaft vibration and bearing vibration of a steam turbine, the monitoring value deviation of the monitoring element cannot be effectively determined due to the characteristic that the monitoring element is easily attenuated with the years of use, and there is a possibility of protection rejection or malfunction, which is not conducive to economic safety is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbine shaft vibration and bearing vibration monitoring, and in particular to a steam turbine-based shaft vibration and bearing vibration coordinated monitoring architecture, system and method. Background Art

[0002] At present, the steam turbine generator set, also known as the steam turbine, is one of the core equipment in thermal power plants and plays an important role in converting thermal energy into electrical energy. As a rotary steam power device, the working principle of the steam turbine is to accelerate high-temperature and high-pressure steam and spray it to the rotor blades, so as to use the pressure difference formed on both sides of the blades to generate lift to drive the rotor to rotate, and then the rotor drives the main shaft connected to the generator transmission to rotate synchronously, thereby transferring kinetic energy to the generator to generate electricity. At the same time, in order to improve the utilization rate of steam, the rotor is usually set to multiple stages, and stators for increasing the kinetic energy speed of steam are alternately provided between the multiple stages of rotors.

[0003] In the actual operation and application of steam turbines, the radial vibration of the main shaft relative to the bearing seat is called shaft vibration, while the vibration of the bearing seat and the machine base is called bearing vibration. Usually, the shaft vibration of the main shaft will inevitably be transmitted to the bearing seat and the machine base to form bearing vibration. When the shaft vibration and bearing vibration values ​​exceed the design standard values, it will cause damage to the bearings, gears, impellers and other parts of the steam turbine, causing vibration, noise, wear and other problems in the steam turbine. In severe cases, it will also cause failure and shutdown of the unit, affecting production efficiency and increasing maintenance costs.

[0004] Therefore, the steam turbine safety monitoring and protection system is often used to measure the shaft vibration and bearing vibration values ​​of the steam turbine. At present, the steam turbine safety monitoring and protection system mainly includes the monitoring and protection system (TSI), the emergency trip system (ETS) device, and the automatic turning operation device. Among them, the TSI system can continuously monitor various important parameters of the steam turbine, such as: it can monitor parameters such as speed, overspeed protection, eccentricity, shaft vibration, bearing vibration, shaft displacement, expansion difference, thermal expansion, etc., to help operating personnel identify machine failures, so that these failures can be timely shut down the steam turbine generator set before causing serious damage to ensure the safety of the unit.

[0005] In the prior art, when monitoring bearing vibration of a steam turbine, a vibration sensor is usually directly mounted on the bearing seat for contact bearing vibration monitoring. When monitoring shaft vibration, an eddy current sensor is mounted on the bearing seat, and the alternating magnetic field formed by the eddy current sensor corresponds to the differential signal formed by the main shaft current, and the relative vibration value of the main shaft based on the bearing seat is measured, or the absolute vibration value of the main shaft based on the ground is measured directly by the acceleration sensor. However, for the eddy current sensor, vibration sensor or acceleration sensor used in the current vibration monitoring system, its installation position is usually concealed, and it is difficult to repair and replace, so it is usually repaired and replaced after a fixed number of years. The performance of the electronic components of the sensor will gradually decline as the service life increases, especially after reaching a certain service life, its voltage will decay sharply, and its degree of decay cannot be effectively determined, which makes it impossible to judge whether the monitoring value within the maintenance period is biased, and protection control can only rely on the monitoring value, which further increases the possibility of protection refusal or malfunction, which is not conducive to the economy and safety of the unit operation. Summary of the invention

[0006] To this end, the present invention provides a turbine-based coordinated monitoring architecture, system and method for shaft vibration and bearing vibration, so as to solve the technical problem in the prior art that when monitoring the relative shaft vibration and bearing vibration of the steam turbine, the monitoring element is limited by the characteristic that the monitoring element is easily attenuated with years of use, resulting in the inability to effectively determine the monitoring value deviation of the monitoring element, and thus there is a possibility of protection refusal to operate or malfunction, which is not conducive to economic safety.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A turbine-based shaft vibration and bearing vibration coordination monitoring architecture, comprising:

[0009] An assembly base structure, used as a rotating assembly base for the transmission main shaft in the steam turbine unit;

[0010] A shaft vibration electrical monitoring structure, the base part of which is fixedly connected to the assembly base structure, and the monitoring part of the shaft vibration electrical monitoring structure faces the transmission main shaft, and is used for monitoring the relative shaft vibration value of the transmission main shaft in the form of electrical signals;

[0011] A bearing-vibration cooperative measuring seat structure is arranged in transmission connection with the assembly basic structure;

[0012] A shaft vibration transmission assembly structure, one end of which is transmission-assembled on the transmission main shaft, and the other end of which cooperates with the bearing vibration cooperative measuring seat structure to mechanically monitor the relative shaft vibration value;

[0013] A bearing vibration electrical monitoring structure, the monitoring part of which is fixedly connected to the assembly base structure in a contact manner, and is used for monitoring the bearing vibration value of the assembly base structure in an electrical signal manner;

[0014] A positioning seat structure is fixedly arranged between the base ground of the assembly base structure;

[0015] A bearing vibration transmission assembly structure has one end which is transmission-assembled on the assembly base structure, and the other end of the bearing vibration transmission assembly structure cooperates with the positioning measuring seat structure to mechanically monitor the bearing vibration value.

[0016] On the basis of the above technical solution, the present invention is further described as follows:

[0017] As a further solution of the present invention, it also includes:

[0018] A visual comparison structure includes a first visual probe and a second visual probe;

[0019] The sensing range of the first visual probe corresponds to the relative shaft vibration value monitoring position of the shaft vibration transmission component structure and the bearing vibration cooperative measuring seat structure;

[0020] The sensing range of the second visual probe corresponds to the bearing vibration value measurement position where the bearing vibration transmission component structure cooperates with the positioning measuring seat structure.

[0021] As a further embodiment of the present invention,

[0022] The assembly base structure includes a bearing base and an indexing inner ring rotatably assembled inside the bearing base, wherein the indexing inner ring serves as a rotational assembly base of the transmission main shaft based on the bearing base;

[0023] The shaft vibration electrical monitoring structure is provided with two groups, and both groups of the shaft vibration electrical monitoring structures are provided with eddy current sensors; the base parts of the two groups of eddy current sensors are respectively fixedly assembled and provided on the bearing base, and the induction probes of the two groups of eddy current sensors are oriented to cross each other at right angles corresponding to the axis of the transmission main shaft, and the two groups of eddy current sensors respectively complete the electrical signal-based relative shaft vibration numerical monitoring of the transmission main shaft based on the bearing base by means of the electrical signal changes corresponding to the alternating magnetic field;

[0024] The bearing vibration electrical monitoring structure is configured as a contact vibration sensor, and the bearing vibration electrical monitoring structure is fixedly assembled on the bearing base. The bearing vibration electrical monitoring structure contacts the bearing base in real time to complete electrical signal-type bearing vibration numerical monitoring of the bearing base.

[0025] As a further embodiment of the present invention,

[0026] The shaft vibration transmission component structure includes a shaft vibration coaxial transmission structure and a shaft vibration adaptive transmission structure;

[0027] The shaft vibration coaxial transmission structure comprises a shaft vibration transmission inner ring and a shaft vibration transmission outer ring rotatably assembled on the shaft vibration transmission inner ring, and the shaft vibration transmission inner ring transmission assembly is arranged on the transmission main shaft;

[0028] The shaft vibration adaptive transmission structure and the bearing vibration cooperative measuring seat structure are each provided with two groups, and each group of the shaft vibration adaptive transmission structure includes a shaft vibration transmission magnetic suction component and a co-vibration directional measuring rod, and each group of the bearing vibration cooperative measuring seat structure includes a co-vibration connecting arm and a co-vibration measuring sleeve; the two groups of the co-vibration measuring sleeves are respectively and one-to-one correspondingly connected and fixedly connected with the bearing base through the two groups of the co-vibration connecting arms, and the co-vibration measuring sleeve can form a bearing vibration state with the same frequency, amplitude and phase based on the bearing base;

[0029] The shaft vibration transmission magnetic absorption assembly includes a shaft vibration magnetic plate assembly seat and a shaft vibration magnetic absorption plate body, and the co-vibration directional measuring rod includes a shaft vibration scale measuring rod and a shaft vibration magnetic absorption ball head fixedly connected to one end of the shaft vibration scale measuring rod;

[0030] One end portion of the two groups of shaft-vibration magnetic plate mounting seats are respectively fixedly mounted on the shaft-vibration transmission outer ring;

[0031] The two groups of shaft-vibration magnetic absorption plates are respectively fixedly mounted on the other end of the two groups of shaft-vibration magnetic plate mounting seats in a one-to-one correspondence, and the plate surfaces of the two groups of shaft-vibration magnetic absorption plates are respectively arranged in a one-to-one correspondence perpendicular to the directions of the induction probes of the two groups of eddy current sensors;

[0032] The two groups of shaft vibration scale measuring rods are arranged one by one in correspondence with the two groups of shaft vibration magnetic absorption plates based on the shaft vibration magnetic absorption ball heads, and the two groups of shaft vibration scale measuring rods are arranged in a sliding manner inside the two groups of co-vibration measurement sleeves.

[0033] The sensing range of the first visual probe corresponds to the measuring pointer of the co-resonance measuring sleeve.

[0034] The initial sliding directions of the two groups of axial vibration scale measuring rods based on the two groups of co-oscillation measuring sleeves and the directions of the sensing probes of the two groups of eddy current sensors in a static state are the same in a one-to-one correspondence.

[0035] As a further embodiment of the present invention,

[0036] The bearing vibration transmission component structure is configured as a bearing vibration adaptive transmission structure;

[0037] The bearing vibration adaptive transmission structure and the positioning measuring seat structure are provided with two groups, and each group of the bearing vibration adaptive transmission structure includes a bearing vibration transmission magnetic suction component and a basic directional measuring rod, and each group of the positioning measuring seat structure includes a positioning base plate and a positioning measuring sleeve; the two groups of the positioning measuring sleeves are respectively fixed to the ground foundation through the two groups of the positioning base plates in a one-to-one correspondence, so as to form a basic positioning state;

[0038] The bearing base is fixedly assembled on the inner wall of the chassis;

[0039] The bearing vibration transmission magnetic attraction assembly includes a bearing vibration magnetic plate assembly seat and a bearing vibration magnetic attraction plate body, and the basic directional measuring rod includes a bearing vibration scale measuring rod and a bearing vibration magnetic attraction ball head fixedly connected to one end of the bearing vibration scale measuring rod;

[0040] One end portion of the two groups of the tile vibration magnetic plate mounting seats are respectively fixedly mounted on the outer wall of the chassis;

[0041] The two groups of the bearing vibration magnetic absorption plate bodies are respectively fixedly mounted on the other end of the two groups of the bearing vibration magnetic plate mounting seats, and the plate surfaces of the two groups of the bearing vibration magnetic absorption plate bodies are respectively arranged one by one to be perpendicular to the directions of the sensing probes of the two groups of the eddy current sensors;

[0042] The two groups of bearing vibration scale measuring rods are arranged one by one in correspondence with the two groups of bearing vibration magnetic absorption ball heads to maintain magnetic attraction connection between the two groups of bearing vibration magnetic absorption plates, and the two groups of bearing vibration scale measuring rods are arranged one by one in correspondence with each other in sliding assembly inside the two groups of positioning and measuring sleeves;

[0043] The sensing range of the second visual probe corresponds to the measuring pointer of the positioning and measuring sleeve.

[0044] A synergistic monitoring method based on the turbine shaft vibration and bearing vibration synergistic monitoring architecture comprises the following steps:

[0045] Start the steam turbine unit, and continuously monitor and calculate the relative shaft vibration value and bearing vibration value monitoring error of the mechanical monitoring structure based on the initially installed shaft vibration electrical monitoring structure and bearing vibration electrical monitoring structure;

[0046] The real-time mechanical monitoring values ​​and the numerical monitoring error are used as the basis for comparison and verification of the electrical signal monitoring values ​​to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring values.

[0047] As a further embodiment of the present invention,

[0048] The steam turbine unit is started, and the shaft vibration electrical monitoring structure and the bearing vibration electrical monitoring structure installed initially are used to continuously monitor and calculate the monitoring error of the relative shaft vibration value and the bearing vibration value of the mechanical monitoring structure;

[0049] Specifically include:

[0050] Start the steam turbine unit, and monitor the initial electrical signal-type relative shaft vibration value of the transmission main shaft based on the bearing base respectively corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other through the initially installed shaft vibration electrical monitoring structure;

[0051] The co-vibration measuring sleeve in the bearing vibration cooperative measuring seat structure drives the shaft vibration scale measuring rod in the shaft vibration adaptive transmission structure to form a bearing vibration state with the same frequency, amplitude and phase with the bearing base, and the shaft vibration action of the transmission main shaft is synchronously transmitted to the shaft vibration adaptive transmission structure through the shaft vibration coaxial transmission structure, and is continuously further transmitted to the shaft vibration scale measuring rod by the shaft vibration magnetic absorption plate in the shaft vibration adaptive transmission structure based on the shaft vibration action and the magnetic absorption action, and the mechanical relative shaft vibration value is measured by the two sets of shaft vibration scale measuring rods and the two sets of co-vibration measuring sleeves corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other;

[0052] Further, the initial electrical signal type bearing vibration value of the bearing base is respectively monitored corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other by the initially installed bearing vibration electrical monitoring structure;

[0053] At the same time, the bearing vibration effect of the bearing base is transmitted to the bearing vibration adaptive transmission structure through the chassis, and the bearing vibration magnetic absorption plate in the bearing vibration adaptive transmission structure further transmits it to the bearing vibration calibration measuring rod based on the bearing vibration effect and the magnetic absorption effect, thereby the mechanical bearing vibration value is measured by cooperating with two sets of bearing vibration calibration measuring rods and two sets of positioning measuring sleeves in the two sets of positioning measuring seat structures corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other and maintain the basic positioning;

[0054] The visual comparison structure is further used to transmit the measured mechanical relative shaft vibration value and mechanical bearing vibration value to the electronic control module respectively, which calculates the numerical monitoring error e1 of the mechanical relative shaft vibration value compared with the initial electrical signal relative shaft vibration value, and the electronic control module calculates the numerical monitoring error e2 of the mechanical bearing vibration value compared with the initial electrical signal bearing vibration value.

[0055] As a further embodiment of the present invention,

[0056] The real-time mechanical monitoring value and the numerical monitoring error are used as the comparison and verification basis of the electrical signal monitoring value to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring value;

[0057] Specifically include:

[0058] The relative shaft vibration value of real-time mechanical monitoring and the numerical monitoring error e1 are used as the basis for comparison and verification of the relative shaft vibration value of electrical signal monitoring, thereby determining the real-time attenuation degree of the shaft vibration electrical monitoring structure, and obtaining the standard relative shaft vibration value through mechanical and electrical signal coordinated monitoring;

[0059] At the same time, the bearing vibration value of real-time mechanical monitoring is combined with the numerical monitoring error amount e2 as the comparison and verification basis of the bearing vibration value of electrical signal monitoring, thereby determining the real-time attenuation degree of the bearing vibration electrical monitoring structure, and obtaining the standard bearing vibration value through mechanical and electrical signal coordinated monitoring;

[0060] The average period of attenuation of the shaft vibration electrical monitoring structure and the average period of attenuation of the shoe vibration electrical monitoring structure are predetermined through experiments, and this is used to assist in determining the real-time attenuation of the shaft vibration electrical monitoring structure and the real-time attenuation of the shoe vibration electrical monitoring structure during the above-mentioned operation.

[0061] As a further solution of the present invention, the following steps are also included:

[0062] Verify the absolute shaft vibration value monitored by comparing with the obtained standard monitoring value;

[0063] Make targeted adjustments to the maintenance cycle based on the attenuation level of the determined electrical signal monitoring components;

[0064] When the visual comparison structure fails, the failed node is directly used as the maintenance node of the visual comparison structure to stably maintain the collaborative monitoring and comparison verification functions;

[0065] The absolute shaft vibration value monitored by the acquired standard monitoring value is verified by collaborative comparison;

[0066] Specifically include:

[0067] The vibration amplitude component vector r corresponding to the first vibration measurement direction x and the second vibration measurement direction y is calculated by obtaining the standard relative axial vibration value. 1x and r 1y The vibration amplitude vectors r corresponding to the first vibration measurement direction x and the second vibration measurement direction y are calculated by using the obtained standard vibration values. 2x and r 2y ;

[0068] Further, the vibration amplitude component vector r corresponding to the first vibration measurement direction x is 1x and r 2x Draw a line graph and compare it with each time point on its time axis. At the same time, the vibration amplitude component r corresponding to the second vibration measurement direction y is calculated. 1y and r 2yDraw a line graph and compare it with each time point of its time axis. After comparison, the standard absolute shaft vibration value of the transmission main shaft a is obtained, which corresponds to the vibration amplitude component vector r of the first vibration measurement direction x and the second vibration measurement direction y. 3x and r 3y , and further integrate and calculate the standard absolute shaft vibration value of the transmission main shaft, and verify the absolute shaft vibration value of the electrical signal monitoring by comparison with the standard absolute shaft vibration value. At the same time, the real-time attenuation degree of the component based on the absolute shaft vibration value monitoring of the transmission main shaft is determined.

[0069] A system for executing the cooperative monitoring method, comprising:

[0070] The error estimation module is used to start the steam turbine unit, and continuously monitor and estimate the relative shaft vibration value and bearing vibration value monitoring error of the mechanical monitoring structure based on the initially installed shaft vibration electrical monitoring structure and bearing vibration electrical monitoring structure;

[0071] A standard value acquisition module is used to use the real-time mechanical monitoring value and the value monitoring error as the basis for comparison and verification of the electrical signal monitoring value, so as to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring value;

[0072] A collaborative comparison and verification module is used to verify the monitored absolute shaft vibration value through collaborative comparison with the acquired standard monitoring value;

[0073] The maintenance node determination module is used to make targeted maintenance cycle adjustments based on the attenuation degree of the determined electrical signal monitoring element, and when a visual comparison structure clearly fails, the failed node is directly used as the maintenance node of the visual comparison structure to stably maintain the collaborative monitoring and comparison verification functions.

[0074] The present invention has the following beneficial effects:

[0075] 1. The architecture and method can effectively complete the electrical signal type relative shaft vibration numerical monitoring of the transmission main shaft by coordinating the assembly basic structure with the shaft vibration electrical monitoring structure, and can further cooperate with the shaft vibration coaxial transmission structure, the shaft vibration adaptive transmission structure, the bearing vibration collaborative measuring seat structure and the visual comparison structure based on the assembly basic structure to effectively form a mechanical relative shaft vibration numerical monitoring architecture, thereby comparing and verifying the attenuation degree of the components of the electrical signal shaft vibration monitoring based on the mechanical architecture, significantly improving the accuracy of the relative shaft vibration numerical monitoring. At the same time, the electrical signal type bearing vibration numerical monitoring can be effectively completed by coordinating the assembly basic structure with the bearing vibration electrical monitoring structure, and can form a mechanical bearing vibration numerical monitoring architecture based on the assembly basic structure in cooperation with the visual comparison structure, the bearing vibration adaptive transmission structure and the positioning measuring seat structure, thereby comparing and verifying the attenuation degree of the components of the electrical signal bearing vibration monitoring based on the mechanical architecture, significantly improving the accuracy of the bearing vibration numerical monitoring.

[0076] 2. This architecture and method can make use of the intuitive performance characteristics of the visual comparison structure to directly determine when a fault occurs in the visual comparison structure, thereby making it possible to more clearly identify the maintenance nodes to stably maintain the coordinated monitoring and comparison verification functions, further significantly improving the accuracy of shaft vibration and bearing vibration monitoring of the turbine unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] In order to more clearly illustrate the implementation mode of the present invention or the technical solution in the prior art, the drawings required for the implementation mode or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0078] Figure 1 A schematic diagram of the overall axle-measurement structure of a turbine-based shaft vibration and bearing vibration coordination monitoring architecture provided in an embodiment of the present invention.

[0079] Figure 2 One of the schematic diagrams of the axle measurement structure corresponding to shaft vibration monitoring in the turbine-based shaft vibration and bearing vibration coordination monitoring architecture provided in an embodiment of the present invention.

[0080] Figure 3 The second schematic diagram of the axle measurement structure corresponding to the shaft vibration monitoring in the shaft vibration and bearing vibration coordination monitoring architecture based on the steam turbine provided in the embodiment of the present invention.

[0081] Figure 4 The third schematic diagram of the axle measurement structure corresponding to shaft vibration monitoring in the turbine-based shaft vibration and bearing vibration coordination monitoring architecture provided in an embodiment of the present invention.

[0082] Figure 5 A schematic diagram of the monitoring positions corresponding to shaft vibration monitoring in the turbine-based shaft vibration and bearing vibration synergy monitoring architecture provided in an embodiment of the present invention.

[0083] Figure 6 The shaft vibration and bearing vibration synergy monitoring architecture based on the steam turbine provided in the embodiment of the present invention is Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0084] Figure 7 A schematic diagram of monitoring positions corresponding to shaft vibration and bearing vibration coordination monitoring in a turbine-based shaft vibration and bearing vibration coordination monitoring architecture provided in an embodiment of the present invention.

[0085] Figure 8An overall flow chart of a collaborative monitoring method according to a collaborative monitoring architecture of shaft vibration and bearing vibration of a steam turbine provided in an embodiment of the present invention.

[0086] Fig. 9 A schematic diagram of a system architecture for executing a coordination monitoring method provided by an embodiment of the present invention.

[0087] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0088] Assembling basic structure 1: bearing base 11, indexing inner ring 12, chassis 13;

[0089] Shaft vibration electrical monitoring structure 2;

[0090] Shaft vibration coaxial transmission structure 3: shaft vibration transmission inner ring 31, shaft vibration transmission outer ring 32;

[0091] Axial vibration adaptive transmission structure 4: an axial vibration transmission magnetic suction component 41, an axial vibration magnetic plate assembly seat 411, an axial vibration magnetic suction plate body 412, a co-vibration directional measuring rod 42, an axial vibration scale measuring rod 421, and an axial vibration magnetic suction ball head 422;

[0092] The bearing vibration coordinated measuring seat structure 5: a co-vibration connecting arm 51 and a co-vibration measuring seat 52;

[0093] Visual comparison structure 6: a first visual probe 61, a second visual probe 62;

[0094] Watt vibration electric monitoring structure 7;

[0095] The bearing vibration adaptive transmission structure 8 includes a bearing vibration transmission magnetic attraction component 81, a bearing vibration magnetic plate assembly seat 811, a bearing vibration magnetic attraction plate body 812, a basic directional measuring rod 82, a bearing vibration scale measuring rod 821, and a bearing vibration magnetic attraction ball head 822;

[0096] Positioning measuring seat structure 9: positioning base plate 91, positioning measuring sleeve seat 92;

[0097] Transmission main axis a; first vibration measurement direction x, second vibration measurement direction y;

[0098] Error amount calculation module 10; standard value acquisition module 20; collaborative comparison and verification module 30; maintenance node determination module 40. DETAILED DESCRIPTION

[0099] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0100] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the invention without substantially changing the technical content.

[0101] like Figures 1 to 7 As shown, an embodiment of the present invention provides a shaft vibration and bearing vibration coordination monitoring architecture based on a steam turbine, comprising an assembly base structure 1, a shaft vibration electrical monitoring structure 2, a shaft vibration coaxial transmission structure 3, a shaft vibration adaptive transmission structure 4, a bearing vibration coordinated measuring seat structure 5, a visual comparison structure 6, a bearing vibration electrical monitoring structure 7, a bearing vibration adaptive transmission structure 8 and a positioning measuring seat structure 9, which is used to effectively complete the electrical signal type relative shaft vibration numerical monitoring of the transmission main shaft a through the coordination of the assembly base structure 1 and the shaft vibration electrical monitoring structure 2, and can further cooperate with the shaft vibration coaxial transmission structure 3, the shaft vibration adaptive transmission structure 4, the bearing vibration coordinated measuring seat structure 5 and the visual comparison structure 6 based on the assembly base structure 1 to effectively form a mechanical relative shaft vibration numerical monitoring architecture, thereby being able to compare and verify the component attenuation of the electrical signal shaft vibration monitoring based on the mechanical architecture. The degree of reduction has significantly improved the accuracy of relative shaft vibration numerical monitoring. At the same time, the assembly base structure 1 can be used in conjunction with the bearing vibration electrical monitoring structure 7 to effectively complete the electrical signal bearing vibration numerical monitoring, and the assembly base structure 1 can be used in conjunction with the visual comparison structure 6, the bearing vibration adaptive transmission structure 8 and the positioning measuring seat structure 9 to form a mechanical bearing vibration numerical monitoring architecture, thereby further comparing and verifying the attenuation of the components of the electrical signal bearing vibration monitoring based on the mechanical architecture, significantly improving the accuracy of bearing vibration numerical monitoring. In addition, the visual comparison structure 6 can also be used with its intuitive performance characteristics to directly determine when a fault occurs, thereby making it possible to more clearly identify the maintenance nodes to stably maintain the coordinated monitoring and comparison verification functions, further significantly improving the accuracy of shaft vibration and bearing vibration monitoring for steam turbine units. The specific settings are as follows:

[0102] Please refer to Figures 1 to 4 The assembly base structure 1 includes a bearing base 11 and a rotation inner ring 12 rotatably assembled inside the bearing base 11, so that the rotation inner ring 12 can effectively serve as a rotation assembly base for the transmission main shaft a in the steam turbine unit based on the bearing base 11.

[0103] The shaft vibration electrical monitoring structure 2 is provided with two groups, and the two groups of the shaft vibration electrical monitoring structures 2 are configured as eddy current sensors; the base parts of the two groups of eddy current sensors are respectively fixedly assembled on the bearing base 11, and the induction probes of the two groups of eddy current sensors are oriented in a right-angled manner to correspond to the axis of the transmission main shaft a, so as to complete the relative shaft vibration value monitoring of the transmission main shaft a based on the bearing base 11 through the two groups of eddy current sensors respectively using the changes in electrical signals corresponding to their alternating magnetic fields.

[0104] The shaft-vibration coaxial transmission structure 3 comprises a shaft-vibration transmission inner ring 31 and a shaft-vibration transmission outer ring 32 rotatably mounted on the outer side of the shaft-vibration transmission inner ring 31. The shaft-vibration transmission inner ring 31 is transmission-assembled on the transmission main shaft a so as to enable the shaft-vibration transmission inner ring 31 to rotate synchronously based on the transmission main shaft a, and at the same time enable the shaft-vibration transmission outer ring 32 to remain in place corresponding to the shaft-vibration transmission inner ring 31.

[0105] Please refer to Figures 2 to 5 The shaft vibration adaptive transmission structure 4 and the bearing vibration cooperative measuring seat structure 5 are each provided with two groups, and each group of the shaft vibration adaptive transmission structure 4 includes a shaft vibration transmission magnetic suction component 41 and a synchronous directional measuring rod 42, and each group of the bearing vibration cooperative measuring seat structure 5 includes a synchronous connecting arm 51 and a synchronous measuring sleeve 52; the two groups of the synchronous measuring sleeves 52 are respectively and one by one connected to the bearing base 11 through the two groups of the synchronous connecting arms 51 and are fixedly connected to the bearing base 11, so that the synchronous measuring sleeve 52 can effectively form a bearing vibration state with the same frequency, amplitude and phase based on the bearing base 11.

[0106] For details, please refer to Figures 2 to 4The shaft vibration transmission magnetic absorption component 41 includes a shaft vibration magnetic plate assembly seat 411 and a shaft vibration magnetic absorption plate body 412, and the co-vibration directional measuring rod 42 includes a shaft vibration scale measuring rod 421 and a shaft vibration magnetic absorption ball head 422 fixedly connected to one end of the shaft vibration scale measuring rod 421; wherein, one end of the two groups of shaft vibration magnetic plate assembly seats 411 are respectively fixedly assembled on the outer side of the shaft vibration transmission outer ring 32; the two groups of shaft vibration magnetic absorption plates 412 are respectively fixedly assembled on the two groups of The other end of the shaft vibration magnetic plate assembly seat 411, and the plate surfaces of the two groups of shaft vibration magnetic absorption plates 412 are respectively corresponding to each other and are arranged perpendicularly between the directions of the induction probes of the two groups of eddy current sensors; the two groups of shaft vibration scale measuring rods 421 are respectively corresponding to each other based on the shaft vibration magnetic absorption ball heads 422 and are arranged to maintain magnetic attraction and connection between the two groups of shaft vibration magnetic absorption plates 412, and the two groups of shaft vibration scale measuring rods 421 are respectively corresponding to each other and are slidably assembled inside the two groups of co-vibration measurement sets 52 ; The two groups of shaft vibration scale measuring rods 421 correspond one to one with the initial sliding direction of the two groups of iso-oscillation measuring sleeves 52 and the orientation of the induction probes of the two groups of eddy current sensors in a stationary state; the above-mentioned setting is used to realize that the measuring direction of the shaft vibration scale measuring rod 421 can effectively adapt to the bearing vibration effect, so as to always maintain the same direction measurement as the induction probe orientation of the eddy current sensor, and at the same time, the shaft vibration magnetic suction plate 412 can always maintain a transmission connection with the shaft vibration magnetic suction ball head 422 based on the magnetic suction setting, and the transmission action angle of the shaft vibration magnetic suction plate 412 corresponding to the shaft vibration magnetic suction ball head 422 can be adaptively changed, and in addition, the magnetic suction setting can be further used to make the shaft vibration transmission outer ring 32 remain in place corresponding to the rotation state of the shaft vibration transmission inner ring 31, thereby forming a mechanical relative shaft vibration numerical monitoring architecture, and realizing comparison and verification of the component attenuation degree of the eddy current sensor during relative shaft vibration monitoring, thereby significantly improving the accuracy of relative shaft vibration numerical monitoring.

[0107] Please continue to refer to Figure 2 The visual comparison structure 6 includes a first visual probe 61, the base of which is fixedly assembled on the iso-resonance connecting arm 51, and the sensing range of the first visual probe 61 corresponds to the measuring pointer of the iso-resonance measuring sleeve 52, so as to obtain the shaft vibration measurement value of the measuring pointer of the iso-resonance measuring sleeve 52 corresponding to the shaft vibration scale measuring rod 421 in real time through the first visual probe 61, so as to realize the coordinated monitoring and comparison and verification of the relative shaft vibration value of the transmission main shaft a with the eddy current sensor, and at the same time, with the help of the intuitive performance characteristics of the first visual probe 61, it can be directly judged when a fault occurs in the first visual probe 61, so that the maintenance node can be more clearly defined to stably maintain the coordinated monitoring and comparison and verification functions, and further effectively improve the accuracy of relative shaft vibration value monitoring.

[0108] Please refer to Figure 1 , Figure 6 and Figure 7 The bearing vibration electrical monitoring structure 7 is configured as a contact vibration sensor, and the bearing vibration electrical monitoring structure 7 is fixedly assembled on the bearing base 11, so as to monitor the bearing vibration value of the bearing base 11 in real time through the bearing vibration electrical monitoring structure 7 in contact.

[0109] The bearing-vibration adaptive transmission structure 8 and the positioning measuring seat structure 9 are each provided with two groups, and each group of the bearing-vibration adaptive transmission structure 8 includes a bearing-vibration transmission magnetic suction component 81 and a basic directional measuring rod 82, and each group of the positioning measuring seat structure 9 includes a positioning base plate 91 and a positioning measuring sleeve 92; the two groups of the positioning measuring sleeves 92 are respectively fixed to the ground foundation through the two groups of the positioning base plates 91 in a one-to-one correspondence, so that the positioning measuring sleeves 92 can effectively form a basic positioning state.

[0110] For details, please refer to Figure 6 to Figure 7 , the bearing base 11 is fixedly assembled on the inner wall of the chassis 13; the bearing vibration transmission magnetic suction component 81 includes a bearing vibration magnetic plate assembly seat 811 and a bearing vibration magnetic suction plate body 812, and the basic directional measuring rod 82 includes a bearing vibration scale measuring rod 821 and a bearing vibration magnetic suction ball head 822 fixedly connected to one end of the bearing vibration scale measuring rod 821; wherein, one end of the two groups of the bearing vibration magnetic plate assembly seats 811 are respectively fixedly assembled on the outer wall of the chassis 13; the two groups of the bearing vibration magnetic suction plate bodies 812 are respectively fixedly assembled on the other end of the two groups of the bearing vibration magnetic plate assembly seats 811, and the plate surfaces of the two groups of the bearing vibration magnetic suction plate bodies 812 are respectively corresponding to each other and are arranged perpendicularly between the directions of the sensing probes of the two groups of the eddy current sensors; the two groups of the bearing vibration scale measuring rods 821 are based on the bearing vibration magnetic suction ball head 822 The two sets of bearing vibration magnetic plates 812 are respectively and one by one correspondingly maintained in magnetic connection with each other, and the two sets of bearing vibration scale measuring rods 821 are respectively and one by one correspondingly slidably assembled inside the two sets of positioning and measuring sleeves 92; through the above-mentioned arrangement, the bearing vibration scale measuring rods 821 can always maintain directional measurement based on the positioning and measuring sleeves 92 in the positioning state, thereby forming a mechanical bearing vibration numerical monitoring architecture, and the mechanical architecture can be compared with the bearing vibration electrical monitoring structure 7 based on the same-direction bearing vibration parameters to verify the component attenuation degree of the bearing vibration electrical monitoring structure 7, and at the same time, the bearing vibration magnetic plate 812 can always maintain a transmission connection with the bearing vibration magnetic ball head 822 based on the magnetic attraction setting, and the transmission action angle of the bearing vibration magnetic plate 812 corresponding to the bearing vibration magnetic ball head 822 can also effectively realize adaptive changes.

[0111] Please continue to refer to Figure 6The visual comparison structure 6 includes a second visual probe 62, the base of which is fixedly assembled on the positioning base plate 91, and the sensing range of the second visual probe 62 corresponds to the measuring pointer of the positioning measurement sleeve 92, so as to obtain the bearing vibration measurement value of the bearing vibration scale measuring rod 821 corresponding to the measuring pointer of the positioning measurement sleeve 92 in real time through the second visual probe 62, so as to realize the coordinated monitoring and comparison and verification of the bearing vibration value of the bearing base 11 with the bearing vibration electrical monitoring structure 7, and at the same time, with the help of the intuitive performance characteristics of the second visual probe 62, it can be directly judged when a fault occurs in the second visual probe 62, so that the maintenance node can be more clearly defined to stably maintain the coordinated monitoring and comparison and verification functions, and further effectively improve the accuracy of bearing vibration value monitoring.

[0112] It should be noted that the first visual probe 61 and the second visual probe 62 are both correspondingly provided with anti-shake brackets and / or anti-shake probes to effectively ensure the accuracy of visual monitoring.

[0113] like Figure 8 As shown, the embodiment of the present invention further provides a cooperative monitoring method based on the above-mentioned cooperative monitoring architecture of shaft vibration and bearing vibration of steam turbine, which specifically includes the following steps:

[0114] S1: Start the steam turbine unit, and continuously monitor and calculate the relative shaft vibration value and bearing vibration value monitoring error of the mechanical monitoring structure based on the initially installed shaft vibration electrical monitoring structure 2 and bearing vibration electrical monitoring structure 7;

[0115] The specific process is as follows: start the steam turbine unit, and monitor the initial electrical signal-type relative shaft vibration value of the transmission main shaft a based on the bearing base 11 respectively through the initially installed shaft vibration electrical monitoring structure 2 corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other;

[0116] At the same time, the co-vibration measuring sleeve 52 in the bearing vibration cooperative measuring seat structure 5 drives the shaft vibration scale measuring rod 421 in the shaft vibration adaptive transmission structure 4 to form a bearing vibration state with the same frequency, amplitude and phase with the bearing base 11, and the shaft vibration action of the transmission main shaft a is synchronously transmitted to the shaft vibration adaptive transmission structure 4 through the shaft vibration coaxial transmission structure 3, and is further transmitted to the shaft vibration scale measuring rod 421 by the shaft vibration magnetic absorption plate 412 in the shaft vibration adaptive transmission structure 4 based on the shaft vibration action and the magnetic absorption action, thereby measuring the mechanical relative shaft vibration value through the two groups of shaft vibration scale measuring rods 421 and the two groups of co-vibration measuring sleeves 52 corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are respectively perpendicular to each other, and further transmitting the measured mechanical relative shaft vibration value to the electronic control module by using the visual comparison structure 6, and the electronic control module infers the numerical monitoring error e1 of the mechanical relative shaft vibration value compared with the initial electrical signal relative shaft vibration value;

[0117] Further, the initial electrical signal type bearing vibration value of the bearing base 11 is respectively monitored by the initially installed bearing vibration electrical monitoring structure 7 corresponding to the perpendicular first vibration measuring direction x and the second vibration measuring direction y;

[0118] At the same time, the bearing vibration effect of the bearing base 11 is transmitted to the bearing vibration adaptive transmission structure 8 through the chassis 13, and is further transmitted to the bearing vibration scale measuring rod 821 by the bearing vibration magnetic absorption plate 812 in the bearing vibration adaptive transmission structure 8 based on the bearing vibration effect and the magnetic absorption effect. Thus, the mechanical bearing vibration value is measured by cooperating with two sets of bearing vibration scale measuring rods 821 and two sets of positioning measuring seats 92 in the two sets of positioning measuring seats 9 corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other and keep the basic positioning. The measured mechanical bearing vibration value is further transmitted to the electronic control module by using the visual comparison structure 6, and the electronic control module calculates the numerical monitoring error e2 of the mechanical bearing vibration value compared with the initial electrical signal bearing vibration value;

[0119] S2: Based on the real-time mechanical monitoring value and the numerical monitoring error, the comparison and verification basis of the electrical signal monitoring value is used to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring value;

[0120] The specific process is as follows: the relative shaft vibration value of real-time mechanical monitoring is combined with the numerical monitoring error amount e1 as the comparison and verification basis of the relative shaft vibration value of electrical signal monitoring, thereby determining the real-time attenuation degree of the shaft vibration electrical monitoring structure 2, and obtaining the standard relative shaft vibration value through mechanical and electrical signal coordinated monitoring;

[0121] At the same time, the bearing vibration value of the real-time mechanical monitoring is combined with the numerical monitoring error amount e2 as the comparison and verification basis of the bearing vibration value of the electrical signal monitoring, thereby determining the real-time attenuation degree of the bearing vibration electrical monitoring structure 7, and obtaining the standard bearing vibration value through mechanical and electrical signal coordinated monitoring;

[0122] More specifically, the average period of attenuation of the shaft vibration electrical monitoring structure 2 and the average period of attenuation of the tile vibration electrical monitoring structure 7 are predetermined by experiment, and this is used to assist in determining the real-time attenuation of the shaft vibration electrical monitoring structure 2 and the real-time attenuation of the tile vibration electrical monitoring structure 7 during the above-mentioned operation;

[0123] S3: Verify the absolute shaft vibration value monitored by comparing with the obtained standard monitoring value;

[0124] The specific process is: the vibration amplitude component vector r corresponding to the first vibration measurement direction x and the second vibration measurement direction y is calculated respectively by obtaining the standard relative axial vibration value. 1x and r 1y The vibration amplitude vectors r corresponding to the first vibration measurement direction x and the second vibration measurement direction y are calculated by using the obtained standard vibration values. 2x and r2y ;

[0125] Further, the vibration amplitude component vector r corresponding to the first vibration measurement direction x is 1x and r 2x Draw a line graph and compare it with each time point on its time axis. At the same time, the vibration amplitude component r corresponding to the second vibration measurement direction y is calculated. 1y and r 2y Draw a line graph and compare it with each time point of its time axis. After comparison, the standard absolute shaft vibration value of the transmission main shaft a is obtained, which corresponds to the vibration amplitude component vector r of the first vibration measurement direction x and the second vibration measurement direction y. 3x and r 3y , and further integrate and calculate to obtain the standard absolute shaft vibration value of the transmission main shaft a, and verify the absolute shaft vibration value of the electrical signal monitoring by comparing the standard absolute shaft vibration value, and at the same time determine the real-time attenuation degree of the component based on the absolute shaft vibration value monitoring of the transmission main shaft a;

[0126] S4: Make targeted adjustments to the maintenance cycle based on the attenuation degree of the determined electrical signal monitoring element;

[0127] When the visual comparison structure 6 clearly fails, the failed node is directly used as the maintenance node of the visual comparison structure 6 to stably maintain the collaborative monitoring and comparison verification functions.

[0128] Fig. 9 A schematic diagram of a system architecture for executing a coordination monitoring method provided by an embodiment of the present invention, such as Fig. 9 As shown, the system for executing the above-mentioned coordination monitoring method specifically includes:

[0129] The error estimation module 10 is used to start the steam turbine unit, and continuously monitor and estimate the relative shaft vibration value and bearing vibration value monitoring error of the mechanical monitoring structure based on the initially installed shaft vibration electrical monitoring structure and bearing vibration electrical monitoring structure;

[0130] The standard value acquisition module 20 is used to use the real-time mechanical monitoring value and the value monitoring error as the basis for comparison and verification of the electrical signal monitoring value, so as to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring value;

[0131] A collaborative comparison and verification module 30 is used to collaboratively compare and verify the monitored absolute shaft vibration value through the acquired standard monitoring value;

[0132] The maintenance node determination module 40 is used to make targeted maintenance cycle adjustments according to the attenuation degree of the determined electrical signal monitoring element, and when a visual comparison structure visually fails, the failed node is directly used as the maintenance node of the visual comparison structure to stably maintain the collaborative monitoring and comparison verification functions.

[0133] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk, etc., various storage media that can store program codes.

[0134] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0135] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0136] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A turbine-based shaft vibration and bearing vibration coordination monitoring architecture, characterized in that: include: An assembly base structure, used as a rotating assembly base for the transmission main shaft in the steam turbine unit; A shaft vibration electrical monitoring structure, the base part of which is fixedly connected to the assembly base structure, and the monitoring part of the shaft vibration electrical monitoring structure faces the transmission main shaft, and is used for monitoring the relative shaft vibration value of the transmission main shaft in the form of electrical signals; A bearing-vibration cooperative measuring seat structure is arranged in transmission connection with the assembly basic structure; A shaft vibration transmission assembly structure, one end of which is transmission-assembled on the transmission main shaft, and the other end of which cooperates with the bearing vibration cooperative measuring seat structure to mechanically monitor the relative shaft vibration value; A bearing vibration electrical monitoring structure, the monitoring part of which is fixedly connected to the assembly base structure in a contact manner, and is used for monitoring the bearing vibration value of the assembly base structure in an electrical signal manner; A positioning measuring seat structure is fixedly arranged between the base ground of the assembly base structure; A bearing vibration transmission assembly structure, one end of which is transmission-assembled on the assembly base structure, and the other end of which cooperates with the positioning and measuring seat structure to mechanically monitor the bearing vibration value; The assembly base structure includes a bearing base and an indexing inner ring rotatably assembled inside the bearing base; The shaft vibration transmission component structure includes a shaft vibration coaxial transmission structure and a shaft vibration adaptive transmission structure; The shaft vibration coaxial transmission structure comprises a shaft vibration transmission inner ring and a shaft vibration transmission outer ring rotatably assembled on the shaft vibration transmission inner ring, and the shaft vibration transmission inner ring transmission assembly is arranged on the transmission main shaft; The shaft vibration adaptive transmission structure and the bearing vibration cooperative measuring seat structure are each provided with two groups, and each group of the shaft vibration adaptive transmission structure includes a shaft vibration transmission magnetic attraction component and a co-vibration directional measuring rod, and each group of the bearing vibration cooperative measuring seat structure includes a co-vibration connecting arm and a co-vibration measuring sleeve; the two groups of the co-vibration measuring sleeves are respectively and one-to-one connected and fixedly connected to the bearing base through the two groups of the co-vibration connecting arms, and the co-vibration measuring sleeve can form a bearing vibration state with the same frequency, amplitude and phase based on the bearing base.

2. The turbine-based shaft vibration and bearing vibration coordination monitoring architecture according to claim 1 is characterized in that: Also includes: A visual comparison structure includes a first visual probe and a second visual probe; The sensing range of the first visual probe corresponds to the relative shaft vibration value monitoring position of the shaft vibration transmission component structure and the bearing vibration cooperative measuring seat structure; The sensing range of the second visual probe corresponds to the bearing vibration value measurement position where the bearing vibration transmission component structure cooperates with the positioning measuring seat structure.

3. The turbine-based shaft vibration and bearing vibration coordination monitoring architecture according to claim 2 is characterized in that: The indexing inner ring is based on the bearing base as a rotational assembly basis of the transmission main shaft; The shaft vibration electrical monitoring structure is provided with two groups, and both groups of the shaft vibration electrical monitoring structures are provided with eddy current sensors; the base parts of the two groups of eddy current sensors are respectively fixedly assembled and provided on the bearing base, and the induction probes of the two groups of eddy current sensors are oriented to cross each other at right angles corresponding to the axis of the transmission main shaft, and the two groups of eddy current sensors respectively complete the electrical signal-based relative shaft vibration numerical monitoring of the transmission main shaft based on the bearing base by means of the electrical signal changes corresponding to the alternating magnetic field; The bearing vibration electrical monitoring structure is configured as a contact vibration sensor, and the bearing vibration electrical monitoring structure is fixedly assembled on the bearing base. The bearing vibration electrical monitoring structure contacts the bearing base in real time to complete electrical signal-type bearing vibration numerical monitoring of the bearing base.

4. The turbine-based shaft vibration and bearing vibration coordination monitoring architecture according to claim 3 is characterized in that: The shaft vibration transmission magnetic absorption assembly includes a shaft vibration magnetic plate assembly seat and a shaft vibration magnetic absorption plate body, and the co-vibration directional measuring rod includes a shaft vibration scale measuring rod and a shaft vibration magnetic absorption ball head fixedly connected to one end of the shaft vibration scale measuring rod; One end portion of the two groups of shaft-vibration magnetic plate mounting seats are respectively fixedly mounted on the shaft-vibration transmission outer ring; The two groups of shaft-vibration magnetic absorption plates are respectively fixedly mounted on the other end of the two groups of shaft-vibration magnetic plate mounting seats in a one-to-one correspondence, and the plate surfaces of the two groups of shaft-vibration magnetic absorption plates are respectively arranged in a one-to-one correspondence perpendicular to the directions of the induction probes of the two groups of eddy current sensors; The two groups of shaft vibration scale measuring rods are arranged one by one in correspondence with the two groups of shaft vibration magnetic absorption plates based on the shaft vibration magnetic absorption ball heads, and the two groups of shaft vibration scale measuring rods are arranged in a sliding manner inside the two groups of co-vibration measurement sleeves. The sensing range of the first visual probe corresponds to the measuring pointer of the synchronous measuring set; The initial sliding directions of the two groups of axial vibration scale measuring rods based on the two groups of co-oscillation measuring sleeves and the directions of the sensing probes of the two groups of eddy current sensors in a static state are the same in a one-to-one correspondence.

5. The turbine-based shaft vibration and bearing vibration coordination monitoring architecture according to claim 4 is characterized in that: The bearing vibration transmission component structure is configured as a bearing vibration adaptive transmission structure; The bearing vibration adaptive transmission structure and the positioning measuring seat structure are provided with two groups, and each group of the bearing vibration adaptive transmission structure includes a bearing vibration transmission magnetic suction component and a basic directional measuring rod, and each group of the positioning measuring seat structure includes a positioning base plate and a positioning measuring sleeve; the two groups of the positioning measuring sleeves are respectively fixed to the ground foundation through the two groups of the positioning base plates in a one-to-one correspondence, so as to form a basic positioning state; The bearing base is fixedly assembled on the inner wall of the chassis; The bearing vibration transmission magnetic attraction assembly includes a bearing vibration magnetic plate assembly seat and a bearing vibration magnetic attraction plate body, and the basic directional measuring rod includes a bearing vibration scale measuring rod and a bearing vibration magnetic attraction ball head fixedly connected to one end of the bearing vibration scale measuring rod; One end portion of the two groups of the tile vibration magnetic plate mounting seats are respectively fixedly mounted on the outer wall of the chassis; The two groups of the bearing vibration magnetic absorption plate bodies are respectively fixedly mounted on the other end of the two groups of the bearing vibration magnetic plate mounting seats, and the plate surfaces of the two groups of the bearing vibration magnetic absorption plate bodies are respectively arranged one by one to be perpendicular to the directions of the sensing probes of the two groups of the eddy current sensors; The two groups of bearing vibration scale measuring rods are arranged one by one in correspondence with the two groups of bearing vibration magnetic absorption ball heads to maintain magnetic attraction connection between the two groups of bearing vibration magnetic absorption plates, and the two groups of bearing vibration scale measuring rods are arranged one by one in correspondence with each other in sliding assembly inside the two groups of positioning and measuring sleeves; The sensing range of the second visual probe corresponds to the measuring pointer of the positioning and measuring sleeve.

6. A synergistic monitoring method based on the synergistic monitoring framework of shaft vibration and bearing vibration of a steam turbine according to claim 5, characterized in that: The steps include: Start the steam turbine unit, and continuously monitor and calculate the relative shaft vibration value and bearing vibration value monitoring error of the mechanical monitoring structure based on the initially installed shaft vibration electrical monitoring structure and bearing vibration electrical monitoring structure; The real-time mechanical monitoring values ​​and the numerical monitoring error are used as the basis for comparison and verification of the electrical signal monitoring values ​​to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring values.

7. The synergy monitoring method according to claim 6, characterized in that: The steam turbine unit is started, and the shaft vibration electrical monitoring structure and the bearing vibration electrical monitoring structure installed initially are used to continuously monitor and calculate the monitoring error of the relative shaft vibration value and the bearing vibration value of the mechanical monitoring structure; Specifically include: Start the steam turbine unit, and monitor the initial electrical signal-type relative shaft vibration value of the transmission main shaft based on the bearing base respectively corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other through the initially installed shaft vibration electrical monitoring structure; The co-vibration measuring sleeve in the bearing vibration cooperative measuring seat structure drives the shaft vibration scale measuring rod in the shaft vibration adaptive transmission structure to form a bearing vibration state with the same frequency, amplitude and phase with the bearing base, and the shaft vibration action of the transmission main shaft is synchronously transmitted to the shaft vibration adaptive transmission structure through the shaft vibration coaxial transmission structure, and is continuously further transmitted to the shaft vibration scale measuring rod by the shaft vibration magnetic absorption plate in the shaft vibration adaptive transmission structure based on the shaft vibration action and the magnetic absorption action, and the mechanical relative shaft vibration value is measured by the two sets of shaft vibration scale measuring rods and the two sets of co-vibration measuring sleeves corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other; Further, the bearing vibration value of the bearing base is respectively monitored by the initially installed bearing vibration electrical monitoring structure corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other; At the same time, the bearing vibration effect of the bearing base is transmitted to the bearing vibration adaptive transmission structure through the chassis, and the bearing vibration magnetic absorption plate in the bearing vibration adaptive transmission structure further transmits it to the bearing vibration calibration measuring rod based on the bearing vibration effect and the magnetic absorption effect, thereby the mechanical bearing vibration value is measured by cooperating with two sets of bearing vibration calibration measuring rods and two sets of positioning measuring sleeves in the two sets of positioning measuring seat structures corresponding to the first vibration measurement direction x and the second vibration measurement direction y which are perpendicular to each other and maintain the basic positioning; The visual comparison structure is further used to transmit the measured mechanical relative shaft vibration value and mechanical bearing vibration value to the electronic control module respectively, which calculates the numerical monitoring error e1 of the mechanical relative shaft vibration value compared with the initial electrical signal relative shaft vibration value, and the electronic control module calculates the numerical monitoring error e2 of the mechanical bearing vibration value compared with the initial electrical signal bearing vibration value.

8. The synergy monitoring method according to claim 7, characterized in that: The real-time mechanical monitoring value and the numerical monitoring error are used as the comparison and verification basis of the electrical signal monitoring value to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring value; Specifically include: The relative shaft vibration value of real-time mechanical monitoring and the numerical monitoring error e1 are used as the basis for comparison and verification of the relative shaft vibration value of electrical signal monitoring, thereby determining the real-time attenuation degree of the shaft vibration electrical monitoring structure, and obtaining the standard relative shaft vibration value through mechanical and electrical signal coordinated monitoring; At the same time, the bearing vibration value of real-time mechanical monitoring is combined with the numerical monitoring error amount e2 as the comparison and verification basis of the bearing vibration value of electrical signal monitoring, thereby determining the real-time attenuation degree of the bearing vibration electrical monitoring structure, and obtaining the standard bearing vibration value through mechanical and electrical signal coordinated monitoring; The average period of attenuation degree of the shaft vibration electrical monitoring structure and the average period of attenuation degree of the tile vibration electrical monitoring structure are predetermined through experiments, and this is used to assist in determining the real-time attenuation degree of the shaft vibration electrical monitoring structure and the real-time attenuation degree of the tile vibration electrical monitoring structure during operation.

9. The synergy monitoring method according to claim 8, characterized in that: The following steps are also included: Verify the absolute shaft vibration value monitored by comparing with the obtained standard monitoring value; Make targeted adjustments to the maintenance cycle based on the attenuation level of the determined electrical signal monitoring components; When the visual comparison structure fails, the failed node is directly used as the maintenance node of the visual comparison structure to stably maintain the collaborative monitoring and comparison verification functions; The absolute shaft vibration value monitored by the acquired standard monitoring value is verified by collaborative comparison; Specifically include: The vibration amplitude component vector r corresponding to the first vibration measurement direction x and the second vibration measurement direction y is calculated by obtaining the standard relative axial vibration value. 1x and r 1y The vibration amplitude vectors r corresponding to the first vibration measurement direction x and the second vibration measurement direction y are calculated by using the obtained standard vibration values. 2x and r 2y ; Further, the vibration amplitude component vector r corresponding to the first vibration measurement direction x is 1x and r 2x Draw a line graph and compare it with each time point on its time axis. At the same time, the vibration amplitude component r corresponding to the second vibration measurement direction y is calculated. 1y and r 2y Draw a line graph and compare it with each time point of its time axis. After comparison, the standard absolute shaft vibration value of the transmission main shaft a is obtained, which corresponds to the vibration amplitude component vector r of the first vibration measurement direction x and the second vibration measurement direction y. 3x and r 3y , and further integrate and calculate the standard absolute shaft vibration value of the transmission main shaft, and verify the absolute shaft vibration value of the electrical signal monitoring by comparison with the standard absolute shaft vibration value. At the same time, the real-time attenuation degree of the component based on the absolute shaft vibration value monitoring of the transmission main shaft is determined.

10. A system for executing the cooperative monitoring method according to claim 9, characterized in that: include: The error estimation module is used to start the steam turbine unit, and continuously monitor and estimate the relative shaft vibration value and bearing vibration value monitoring error of the mechanical monitoring structure based on the initially installed shaft vibration electrical monitoring structure and bearing vibration electrical monitoring structure; A standard value acquisition module is used to use the real-time mechanical monitoring value and the value monitoring error as the basis for comparison and verification of the electrical signal monitoring value, so as to determine the attenuation degree of the electrical signal monitoring element and obtain the standard monitoring value; A collaborative comparison and verification module is used to verify the monitored absolute shaft vibration value through collaborative comparison with the acquired standard monitoring value; The maintenance node determination module is used to make targeted maintenance cycle adjustments based on the attenuation degree of the determined electrical signal monitoring element, and when a visual comparison structure clearly fails, the failed node is directly used as the maintenance node of the visual comparison structure to stably maintain the collaborative monitoring and comparison verification functions.

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