Thermal power generating unit measuring point abnormity discriminating and early warning device

Abstract

The invention relates to the technical field of thermal power generating unit equipment monitoring, and discloses a thermal power generating unit measuring point abnormity discriminating and early warning device which comprises a connecting pipe, a control assembly and a trigger assembly, a plurality of arc-shaped plates in the control assembly are annularly distributed around the connecting pipe, and a limiting seat at the tail end of an arc-shaped rod slides in a hollow cavity. The arc-shaped plate can be opened and closed cooperatively along with thermal expansion and cold contraction of the connecting pipe to release thermal stress; the deformation chamber of the inner side sealing sleeve is subjected to self-adaptive deformation along with the movement of the arc-shaped plate to form dynamic sealing; the outer side push plate is connected with the supporting spring through the push rod and the sliding seat, the arc-shaped plate is pushed to tighten the sealing sleeve with proper elastic force in a normal state, and excessive extrusion is avoided. The triggering assembly achieves intelligent pressure regulation and control, the nitrogen bag expands or contracts along with temperature changes, the moving disc and the feeler lever are pushed to press the moving plate, thrust is reduced at the high temperature to avoid excessive extrusion of the sealing sleeve, thrust is recovered at the low temperature to guarantee sealing, temperature difference changes are accurately adapted, and all the assemblies cooperate to improve monitoring reliability.

Description

Technical Field

[0001] This invention relates to the field of thermal power unit equipment monitoring technology, and in particular to an anomaly identification and early warning device for thermal power unit measuring points. Background Technology

[0002] The safe and stable operation of thermal power units relies on real-time monitoring of thousands of measuring points (temperature, pressure, vibration, etc.) in core equipment such as boilers and turbines. Anomaly detection and early warning devices at these measuring points analyze this data to provide crucial support for fault prevention. However, the temperature fluctuations in high-temperature areas of the unit (such as the furnace and high-pressure cylinder) are drastic, with temperature differences reaching 300-500℃ during start-up, shutdown, and peak shaving. Existing devices' connection, compensation, and sealing structures are ill-suited to these extreme conditions, severely impacting the accuracy of anomaly detection and the reliability of the devices.

[0003] Existing devices often use rigid sheaths to connect sensors and signal links. The thermal expansion coefficients of the sheath, the device body, and the internal cables differ significantly (e.g., the coefficient of thermal expansion of metal sheaths differs from that of plastic cables by more than 10 times), and there is a lack of adaptive and adjustable elastic buffer structures. When temperatures change abruptly, the rigid structure cannot release the accumulated thermal stress, which can easily lead to sheath interface breakage, sensor loosening and displacement, or cable insulation layer stretching and damage. This directly causes data acquisition distortion (such as temperature jumps and vibration signal attenuation), undermining the data foundation for anomaly detection.

[0004] Meanwhile, existing compensation structures (such as simple bellows) not only have limited compensation capacity, making it difficult to match the deformation range of equipment under temperature differences of 300-500℃, but their sealing performance is also limited by rigid pressure design: to ensure sealing performance at high temperatures, excessive elastic thrust is often used to force the seals to fit, but continuous high stress will accelerate the aging and deformation of the seals (such as fatigue cracking of bellows and hardening of gaskets), which in turn leads to a rapid decline in sealing performance with temperature cycles. High-temperature dust and moisture take the opportunity to seep into the signal transmission link, further interfering with data accuracy, and ultimately causing frequent false alarms or missed critical faults by the early warning device. These problems not only significantly reduce the reliability of anomaly identification, but may also cause unplanned downtime due to delayed or misjudged fault warnings, resulting in huge economic losses. Summary of the Invention

[0005] The technical problem to be solved by this invention is that the existing devices in the prior art have the disadvantage of inaccurate early warning data. To address this, we propose an anomaly identification and early warning device for thermal power unit measuring points.

[0006] To achieve the above objectives, this application adopts the following technical solution: a thermal power unit measuring point anomaly identification and early warning device, comprising a unit, a connecting pipe fixedly connected to one side of the unit, an assembly seat sleeved on the surface of the connecting pipe, a control component and a triggering component built into the assembly seat, an installation chamber opened inside the assembly seat, the control component comprising multiple arc-shaped plates, the arc-shaped plates being placed in the installation chamber, multiple arc-shaped rods being arranged between the multiple arc-shaped plates, a hollow cavity opened on one side of the arc-shaped plates, one end of the arc-shaped rod being fixedly connected to the arc-shaped plate, the other end of the arc-shaped rod extending through adjacent arc-shaped plates into the hollow cavity, a sealing sleeve sleeved inside the annular structure formed by the multiple arc-shaped plates, the sealing sleeve being sleeved on the surface of the connecting pipe, and multiple... A push plate has a moving plate on its side away from the center of the mounting base. Support plates are rotatably connected to both sides of the middle of the moving plate. The end of the support plate away from the moving plate is fixedly connected to the inner wall of the mounting cavity. The two ends of the moving plate form a seesaw structure with the support plates as fulcrums. A push rod is sleeved on the end of the moving plate near the push plate. A connecting seat is fixedly connected to the bottom of the push rod, and the bottom of the connecting seat contacts the push plate. A sliding seat is sleeved and fixed to the surface of the push rod. A support spring is provided between the sliding seat and the inner wall of the mounting cavity. A triggering component is located at the end of the moving plate away from the push plate. The triggering component includes a nitrogen tank. An assembly tube is fixedly connected to the bottom of the nitrogen tank. A moving disc is built into the assembly tube. A contact rod is fixedly connected to the bottom of the moving disc, and the bottom of the contact rod contacts the end of the moving plate away from the push plate.

[0007] Preferably, the assembly base is provided with a closing plate at both ends, and positioning holes are provided on the surface of both the closing plate and the assembly base, and bolts and studs are inserted and fixed in the positioning holes.

[0008] Preferably, the plurality of the arc-shaped plates are evenly distributed around the axis of the connecting pipe, and a sliding window is provided at one end of the moving plate, through which the moving plate is slidably sleeved on the surface of the push rod.

[0009] Preferably, the inner wall of the mounting cavity is fixedly connected with multiple mounting brackets for fixing sensors, and the sealing sleeve has multiple evenly distributed deformation chambers inside.

[0010] Preferably, a limiting seat is fixedly connected to one end of the arc-shaped rod inside the hollow cavity, and the limiting seat is slidably connected to the inner wall of the hollow cavity.

[0011] Preferably, the bottom surface of the sliding seat has an inclined surface, and the bottom of the sliding seat is slidably connected to the surface of the motion plate.

[0012] Preferably, the top of the sliding seat is provided with a positioning groove, the bottom of the support spring contacts the bottom of the inner cavity of the positioning groove, the top of the support spring is sleeved and fixed with a positioning cylinder, and one end of the positioning cylinder is fixedly connected to the inner wall of the mounting cavity.

[0013] Preferably, the nitrogen tank is fitted with multiple restraint frames, the two ends of which are fixedly connected to the inner wall of the installation chamber, and the nitrogen tank is connected to the assembly pipe.

[0014] Preferably, a fixing ring groove is formed around the motion disk, and a sealing ring is sleeved in the fixing ring groove, with the outer ring wall of the sealing ring in contact with the inner wall of the assembly tube.

[0015] Preferably, a fixed seat is provided at the end of the moving plate away from the push plate, one end of the fixed seat is fixedly connected to the inner wall of the mounting cavity, and arc-shaped grooves are provided on both sides of the fixed seat. Guide columns are fixedly connected to both sides of the end of the moving plate near the fixed seat, and the guide columns are slidably connected to the inner wall of the arc-shaped groove.

[0016] The technical effects and advantages of this invention are as follows: In this invention, the thermal power unit measurement point anomaly identification and early warning device uses a connecting pipe as the core carrier, is fixed to the unit through an assembly base, and has a sealed installation chamber sealed by a sealing plate and bolts and studs. The internal mounting frame provides a stable space for the sensor and ensures the acquisition of raw data.

[0017] In the control assembly, multiple arc-shaped plates are arranged in a ring around the connecting pipe and connected to adjacent arc-shaped plates via arc-shaped rods. The limiting seats at the ends of the arc-shaped rods slide within the hollow cavity, allowing the arc-shaped plates to open and close in sync with the thermal expansion and contraction of the connecting pipe, releasing thermal stress. The deformation chamber of the inner sealing sleeve adapts to the movement of the arc-shaped plates, forming a dynamic seal. The outer push plate is connected to the support spring via a push rod and a sliding seat. Under normal conditions, it pushes the arc-shaped plates with appropriate elasticity to tighten the sealing sleeve, avoiding excessive compression. The moving plate forms a seesaw structure with the support plate as the fulcrum. Through the cooperation of the sliding window and the push rod, the swing is converted into push rod displacement, providing sufficient buffer space for deformation.

[0018] The trigger component enables intelligent pressure regulation. The nitrogen tank expands or contracts with temperature changes, pushing the motion disc and contact rod to press the motion plate. The seesaw characteristic is used to adjust the push rod's thrust on the arc plate. At high temperatures, the thrust is reduced to avoid excessive compression of the sealing sleeve, and at low temperatures, the thrust is restored to ensure sealing. Combined with the stable guidance of the guide column and arc groove, it accurately adapts to temperature difference changes.

[0019] The device addresses the thermal stress problem of rigid connections through elastic buffering, offers superior dynamic sealing compensation compared to traditional structures, extends seal life through low-stress protection, and enhances monitoring reliability through the coordinated operation of various components. This reduces false alarms and missed alarms, thereby mitigating the risk of unplanned unit shutdowns. Attached Figure Description

[0020] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall second-view structure of the present invention; Figure 3 This is a schematic diagram of the assembly structure of the mounting base and the closing plate of the present invention; Figure 4 This is a schematic diagram of the overall exploded structure of the present invention; Figure 5 This is a schematic diagram of the assembly structure of the mounting base and control components of the present invention; Figure 6 This is a schematic diagram of the control component structure of the present invention; Figure 7 This is an exploded view of the control component of the present invention; Figure 8 This is a schematic diagram of the assembly structure of the trigger component and the control component of the present invention; Figure 9 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 10 This is a schematic diagram of the explosion structure of the trigger component of the present invention.

[0021] Legend: 1. Unit; 101. Connecting pipe; 2. Mounting base; 201. Enclosure plate; 202. Positioning hole; 203. Bolt stud; 204. Mounting chamber; 205. Mounting bracket; 3. Control components; 301. Arc plate; 302. Hollow chamber; 303. Arc rod; 304. Limit seat; 305. Sealing sleeve; 306. Deformation chamber; 307. Push plate; 308. Moving plate; 309. Support plate; 31 0. Connecting seat; 311. Push rod; 312. Sliding window; 313. Sliding seat; 314. Inclined surface; 315. Support spring; 316. Positioning groove; 317. Positioning cylinder; 4. Trigger assembly; 401. Nitrogen tank; 402. Restraint frame; 403. Assembly tube; 404. Moving plate; 405. Fixed ring groove; 406. Sealing ring; 407. Contact rod; 408. Fixed seat; 409. Arc groove; 410. Guide column. Detailed Implementation

[0022] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0023] Reference Figures 1 to 10 As shown, the present invention provides a technical solution: an anomaly identification and early warning device for measuring points of a thermal power unit, comprising a unit 1, a connecting pipe 101 fixedly connected to one side of the unit 1, an assembly base 2 sleeved on the surface of the connecting pipe 101, a control component 3 and a trigger component 4 built into the assembly base 2, sealing plates 201 provided at both ends of the assembly base 2, positioning holes 202 provided on the surface of both the sealing plates 201 and the assembly base 2, bolts and studs 203 inserted and fixed in the positioning holes 202, an installation chamber 204 provided inside the assembly base 2, and multiple mounting brackets 205 for fixing sensors fixedly connected around the inner wall of the installation chamber 204. The device uses the connecting pipe 101 as the core connecting carrier and is fixedly assembled with the unit 1 through the mounting base 2. The cooperation between the sealing plate 201 and the bolts and studs 203 not only isolates the installation chamber 204 from the external environment, but also provides a stable installation boundary for the internal components, ensuring that the control component 3 and the triggering component 4 can operate reliably in the high-temperature and dusty environment of the unit 1. The mounting brackets 205 are evenly distributed on the inner wall of the installation chamber 204, providing independent and stable installation space for sensors for measuring points such as temperature, pressure, and vibration, avoiding displacement of the sensors due to equipment vibration or structural deformation, and ensuring the stability of the acquisition of the original monitoring data.

[0024] The control component 3 includes multiple arc-shaped plates 301, which are placed inside the installation chamber 204. The multiple arc-shaped plates 301 are evenly distributed around the axis of the connecting pipe 101. Multiple arc-shaped rods 303 are arranged between the multiple arc-shaped plates 301. A hollow cavity 302 is opened on one side of the arc-shaped plate 301. One end of the arc-shaped rod 303 is fixedly connected to the arc-shaped plate 301, and the other end of the arc-shaped rod 303 extends through the adjacent arc-shaped plate 301 into the hollow cavity 302. One end of the arc-shaped rod 303 inside the hollow cavity 302 is fixedly connected to a limiting seat 304. The limiting seat 304 is slidably connected to the inner wall of the hollow cavity 302. The control component 3 achieves dynamic response to the thermal deformation of the connecting pipe 101 through a multi-dimensional elastic adaptation structure. Multiple arc-shaped plates 301 are arranged in a ring around the axis of the connecting pipe 101. Adjacent arc-shaped plates 301 are connected by arc-shaped rods 303. One end of the arc-shaped rod 303 is fixed to the arc-shaped plate 301, and the other end passes through the adjacent arc-shaped plate 301 and extends into the hollow cavity 302. The limiting seat 304 at the end is in close contact with the inner wall of the hollow cavity 302 and can slide along the arc direction. This design allows the arc plate 301 to maintain the stability of the overall annular structure, while also enabling the coordinated opening and closing of each arc plate 301 through the sliding of the arc rod 303 within the hollow cavity 302 when the connecting pipe 101 expands radially due to temperature changes: when the connecting pipe 101 expands, the arc plate 301 is subjected to an outward thrust, the arc rod 303 slides into the adjacent hollow cavity 302, and the limiting seat 304 moves synchronously along the cavity wall, providing buffer space for expansion; when the connecting pipe 101 contracts, the arc rod 303 resets under the action of the reverse force, and the arc plate 301 tightens again, avoiding gaps with the connecting pipe 101.

[0025] Meanwhile, a sealing sleeve 305 is fitted inside the annular structure formed by multiple arc-shaped plates 301. The sealing sleeve 305 is fitted onto the surface of the connecting pipe 101. Multiple evenly distributed deformation chambers 306 are opened inside the sealing sleeve 305. Multiple push plates 307 are arranged on the outer ring of the annular structure formed by the multiple arc-shaped plates 301. A moving plate 308 is arranged on the side of the push plate 307 away from the center of the mounting base 2. Support plates 309 are rotatably connected to both sides of the middle of the moving plate 308. The end of the motion plate 308 furthest from the motion plate 308 is fixedly connected to the inner wall of the mounting chamber 204. The two ends of the motion plate 308 form a seesaw structure with the support plate 309 as the fulcrum. A push rod 311 is sleeved on the end of the motion plate 308 near the push plate 307. A connecting seat 310 is fixedly connected to the bottom of the push rod 311. The bottom of the connecting seat 310 contacts the push plate 307. A sliding window 312 is opened at one end of the motion plate 308. The motion plate 308 is slidably sleeved on the push rod through the sliding window 312. On the surface of push rod 311, a sliding seat 313 is fixedly fitted onto the surface of push rod 311. An inclined surface 314 is provided on the bottom surface of sliding seat 313. The bottom of sliding seat 313 is slidably connected to the surface of moving plate 308. A support spring 315 is provided between sliding seat 313 and the inner wall of mounting chamber 204. A positioning groove 316 is provided on the top of sliding seat 313. The bottom of support spring 315 contacts the bottom of the inner cavity of positioning groove 316. A positioning cylinder 317 is fixedly fitted onto the top of support spring 315. One end of positioning cylinder 317 is fixedly connected to the inner wall of mounting chamber 204. Sealing sleeve 305 directly wraps around the surface of connecting pipe 101. The deformation chambers 306 evenly distributed inside are flexible structures (such as built-in elastic supports or compressible air chambers). When connecting pipe 101 expands and contracts, deformation chambers 306 can expand, contract or bend synchronously with the opening and closing of arc plate 301, ensuring that sealing sleeve 305 is always tightly fitted with the outer wall of connecting pipe 101, forming the first sealing barrier. The push plate 307 on the outer side of the arc-shaped plate 301 is responsible for force transmission: the push plate 307 is connected to the bottom of the push rod 311 through the connecting seat 310. The push rod 311 extends upward and passes through the sliding window 312 of the moving plate 308. The sliding seat 313 at its top contacts the bottom of the support spring 315, and the top of the support spring 315 is fixed to the inner wall of the mounting chamber 204 through the positioning cylinder 317. Under normal conditions, the elastic force of the support spring 315 is transmitted to the push plate 307 along the positioning cylinder 317, the sliding seat 313, the push rod 311, and the connecting seat 310, ultimately pushing the arc-shaped plate 301 to tighten towards the connecting pipe 101, so that the sealing sleeve 305 maintains appropriate pressure to fit the connecting pipe 101, ensuring both sealing and avoiding excessive compression.

[0026] The seesaw structure of the motion plate 308 is key to force adjustment: its middle part is rotatably connected to the inner wall of the mounting chamber 204 via the support plate 309, and its two ends can swing up and down around the fulcrum. A sliding window 312 is opened at the end of the motion plate 308 near the push plate 307. When the push rod 311 passes through the window, the inclined surface 314 at the bottom of the sliding seat 313 contacts the surface of the motion plate 308. When this end of the motion plate 308 swings up and down, the sliding engagement of the inclined surface 314 can convert the swinging motion into the axial displacement of the push rod 311, so that the push rod 311 forms a dynamic balance between the elastic force of the support spring 315 and the thrust of the motion plate 308, reserving sufficient adjustment margin for the deformation of the arc plate 301 and avoiding structural damage caused by rigid force constraints.

[0027] Furthermore, a trigger assembly 4 is provided, located at the end of the motion plate 308 away from the push plate 307. The trigger assembly 4 includes a nitrogen tank 401, with multiple restraint brackets 402 fixedly fitted onto the surface of the nitrogen tank 401. The two ends of the restraint brackets 402 are fixedly connected to the inner wall of the installation chamber 204. An assembly tube 403 is fixedly connected to the bottom of the nitrogen tank 401, and the nitrogen tank 401 communicates with the assembly tube 403. A motion disc 404 is built into the assembly tube 403. A fixing ring groove 405 is formed around the motion disc 404, and a sealing ring 406 is fitted inside the fixing ring groove 405. The outer ring wall of the sealing ring 406 contacts the inner wall of the assembly tube 403. A contact rod 407 is fixedly connected to the bottom of the moving plate 404. The bottom of the contact rod 407 contacts the end of the moving plate 308 away from the push plate 307. A fixed seat 408 is provided at the end of the moving plate 308 away from the push plate 307. One end of the fixed seat 408 is fixedly connected to the inner wall of the installation chamber 204. Arc-shaped grooves 409 are opened on both sides of the fixed seat 408. Guide posts 410 are fixedly connected to both sides of the end of the moving plate 308 near the fixed seat 408. The guide posts 410 are slidably connected to the inner wall of the arc-shaped grooves 409. The trigger component 4 realizes intelligent control of the sealing pressure through temperature sensing. Nitrogen tank 401 is fixed above installation chamber 204 by restraint frame 402. The nitrogen gas sealed inside has significant thermal expansion and contraction characteristics: when the temperature of the high temperature area of ​​unit 1 rises, the nitrogen gas expands and generates upward pressure, pushing the moving disk 404 in the assembly pipe 403 to move downward (the sealing ring 406 on the outer periphery of the moving disk 404 is tightly fitted with the inner wall of the assembly pipe 403 to prevent nitrogen leakage and ensure pressure transmission efficiency). The contact rod 407 at the bottom of the moving disk 404 moves downward accordingly, pressing the end of the moving plate 308 away from the push plate 307 to swing downward. Due to the seesaw characteristic of the moving plate 308, the end near the push plate 307 is lifted upwards. The inclined surface 314 of the sliding seat 313 drives the push rod 311 to move upwards against part of the elastic force of the support spring 315, reducing the pushing force of the push plate 307 on the arc plate 301. At this time, the connecting pipe 101 expands due to high temperature, and the sealing sleeve 305 is appropriately loosened with the arc plate 301. This avoids deformation fatigue of the sealing sleeve 305 due to excessive compression, and also maintains a sealed fit with the connecting pipe 101 through its own deformation chamber 306. When the temperature decreases, the nitrogen gas contracts, and the moving plate 404 and the contact rod 407 reset under the reaction force of the support spring 315. The end of the moving plate 308 near the push plate 307 moves downwards, and the push rod 311 pushes the arc plate 301 to tighten again. The sealing sleeve 305 then fits the contracted connecting pipe 101 with appropriate pressure. The guide posts 410 at both ends of the motion plate 308 are embedded in the arc-shaped grooves 409 of the fixed seat 408 and slide along the groove wall as the motion plate 308 swings, ensuring a stable swing trajectory, avoiding force transmission deviation due to offset, and ensuring the accuracy of pressure adjustment.

[0028] This design achieves full-condition elastic buffering, completely avoiding the defects of rigid connections. Existing devices' rigid sleeves, due to differences in the thermal expansion coefficients of their materials, are prone to generating unreleased thermal stress during temperature changes, leading to problems such as interface breakage and sensor loosening. However, the combined structure of the arc-shaped plate 301 and arc-shaped rod 303 in this device, through the sliding of the arc-shaped rod 303 within the hollow cavity 302 and the guidance of the limiting seat 304, can adaptively deform with the thermal expansion and contraction of the connecting pipe 101. Combined with the buffering effect of the seesaw structure of the moving plate 308, the deformation differences between different materials (such as the metal material of the connecting pipe 101 and the plastic material of the sensor cable) are transformed into the opening and closing motion of the arc-shaped plate 301, effectively releasing thermal stress. This design fundamentally avoids sleeve breakage, sensor displacement, or tensile damage to the cable insulation layer, ensuring the integrity of the data acquisition link and providing a stable raw data foundation for anomaly identification.

[0029] The combination of dynamic sealing compensation and low-stress protection significantly improves sealing reliability and lifespan. Existing compensation structures (such as simple bellows) have limited compensation capacity, making it difficult to adapt to equipment deformation under temperature differences of 300-500℃. Moreover, to ensure sealing, excessive elastic thrust is often used, leading to accelerated aging of the seals due to long-term high stress. The sealing sleeve 305 of this device achieves large-stroke deformation compensation through the internal deformation chamber 306. Its compensation amount can be flexibly adjusted according to the expansion and contraction of the connecting pipe 101, which is far superior to traditional bellows. At the same time, the trigger component 4 dynamically adjusts the sealing pressure through the temperature sensing characteristics of the nitrogen tank 401: at high temperatures, the connecting pipe 101 expands, and the contact rod 407 pushes the moving plate 308 to reduce the thrust on the arc plate 301. The sealing sleeve 305 loosens appropriately with the arc plate 301 to avoid excessive compression. At low temperatures, the connecting pipe 101 contracts, the support spring 315 recovers its elasticity, and pushes the arc plate 301 to tighten the sealing sleeve 305 to ensure a tight fit. This "pressure-on-demand" mechanism completely solves the problem of "excessive compression" in traditional structures, reduces fatigue wear (such as hardening and cracking) of the sealing sleeve 305 caused by long-term high stress, significantly extends its service life, and at the same time maintains a reliable seal, effectively preventing high-temperature dust and water vapor from penetrating into the signal transmission link and avoiding false alarms or missed alarms caused by data interference.

[0030] The various components of the device form an organic whole. The mounting bracket 205 ensures the stable fixation of the sensor, the control component 3 achieves elastic buffering and dynamic sealing, and the triggering component 4 precisely regulates the sealing pressure. The three work together to ensure the accuracy and continuity of the monitoring data. Compared with existing devices that suffer from signal distortion and early warning failure due to structural defects, this device can operate stably under severe temperature difference environments, providing reliable hardware support for anomaly identification of thermal power unit 1, reducing the risk of unplanned shutdowns caused by delayed or misjudged early warnings, and ensuring the safe and stable operation of unit 1.

[0031] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A device for identifying and warning of abnormalities at measuring points of thermal power units, characterized in that, The unit includes a connecting pipe fixedly connected to one side of the unit. A mounting base is fitted onto the surface of the connecting pipe. The mounting base houses a control component and a triggering component. An installation chamber is formed inside the mounting base. The control component includes multiple arc-shaped plates, which are placed within the installation chamber. Multiple arc-shaped rods are positioned between the arc-shaped plates. A hollow cavity is formed on one side of each arc-shaped plate. One end of each arc-shaped rod is fixedly connected to an arc-shaped plate, and the other end extends through an adjacent arc-shaped plate into the hollow cavity. A sealing sleeve is fitted inside the annular structure formed by the multiple arc-shaped plates. The sealing sleeve is fitted onto the surface of the connecting pipe. Multiple push plates are arranged on the outer ring of the annular structure formed by the multiple arc-shaped plates. A push plate is positioned on the side of the push plate furthest from the center of the mounting base. A motion plate has support plates rotatably connected to both sides of its central portion. The end of each support plate away from the motion plate is fixedly connected to the inner wall of the mounting chamber. The two ends of the motion plate form a seesaw structure with the support plates as fulcrums. A push rod is sleeved on the end of the motion plate near the push plate. A connecting seat is fixedly connected to the bottom of the push rod, and the bottom of the connecting seat contacts the push plate. A sliding seat is sleeved and fixed on the surface of the push rod. A support spring is provided between the sliding seat and the inner wall of the mounting chamber. A triggering component is located at the end of the motion plate away from the push plate. The triggering component includes a nitrogen tank. An assembly tube is fixedly connected to the bottom of the nitrogen tank. A motion disc is built into the assembly tube. A touch rod is fixedly connected to the bottom of the motion disc, and the bottom of the touch rod contacts the end of the motion plate away from the push plate.

2. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: The assembly base is provided with a sealing plate at both ends. The sealing plate and the surface of the assembly base are provided with positioning holes, and bolts and studs are inserted and fixed in the positioning holes.

3. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: Multiple arc-shaped plates are evenly distributed around the axis of the connecting pipe. One end of each moving plate has a sliding window, and the moving plate is slidably sleeved onto the surface of the push rod through the sliding window.

4. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: Multiple mounting brackets for fixing sensors are fixedly connected around the inner wall of the mounting cavity, and multiple evenly distributed deformation chambers are opened inside the sealing sleeve.

5. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: The arc-shaped rod is fixedly connected to a limiting seat at one end inside the hollow cavity, and the limiting seat is slidably connected to the inner wall of the hollow cavity.

6. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: The bottom surface of the sliding seat is provided with an inclined surface, and the bottom of the sliding seat is slidably connected to the surface of the motion plate.

7. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: The sliding seat has a positioning groove on its top, the bottom of the support spring contacts the bottom of the positioning groove, and a positioning cylinder is fixedly sleeved on the top of the support spring. One end of the positioning cylinder is fixedly connected to the inner wall of the mounting cavity.

8. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: Multiple restraint frames are fixedly fitted onto the surface of the nitrogen tank, and both ends of the restraint frames are fixedly connected to the inner wall of the installation chamber. The nitrogen tank is connected to the assembly pipe.

9. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: The moving disc has a fixing ring groove around its perimeter, and a sealing ring is fitted inside the fixing ring groove. The outer ring wall of the sealing ring is in contact with the inner wall of the assembly tube.

10. The thermal power unit measuring point anomaly identification and early warning device according to claim 1, characterized in that: A fixed seat is provided at the end of the moving plate away from the push plate. One end of the fixed seat is fixedly connected to the inner wall of the mounting cavity. Arc-shaped grooves are provided on both sides of the fixed seat. Guide columns are fixedly connected to both sides of the end of the moving plate near the fixed seat. The guide columns are slidably connected to the inner wall of the arc-shaped groove.

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