Vacuum circuit breaker integrated with intelligent monitoring function

Abstract

The application discloses a vacuum circuit breaker integrated with intelligent monitoring function and belongs to the technical field of vacuum circuit breakers.The device comprises a vacuum arc-extinguishing chamber, a sealed cavity is communicatively arranged on the vacuum arc-extinguishing chamber, a diaphragm is installed in the sealed cavity to separate the sealed cavity into two sides, a feedback assembly is arranged in a feedback transparent cylinder, the feedback assembly comprises a feedback rod connected with the diaphragm and a dead point crossing structure composed of an inclined pre-tight spring, the diaphragm is amplified into a definite action when vacuum degree deteriorates to a threshold value, and the sealed slide block is pushed by a one-way valve to drive monitoring liquid to form a visible signal; an indicating rod matched with a limiting strip is further arranged in the display cylinder, and reversible liquid level signals are solidified into irreversible over-limit records.The application can realize online visual monitoring of vacuum state and keep over-limit records, and solves the problem that the existing vacuum circuit breaker is difficult to find in time when vacuum degree slowly deteriorates.

Description

Technical Field

[0001] This invention relates to the field of vacuum circuit breaker technology, specifically to a vacuum circuit breaker with integrated intelligent monitoring function. Background Technology

[0002] A vacuum circuit breaker is a breaking device that uses vacuum as both insulation and arc-extinguishing medium. It relies on a vacuum interrupter chamber to extinguish the electric arc when the contacts separate, thereby achieving circuit switching and fault protection. Maintaining a sufficiently high vacuum level inside the vacuum interrupter chamber is a fundamental prerequisite for its good insulation strength and reliable arc-extinguishing capability. The vacuum level directly affects the breaking performance and operational safety of the vacuum circuit breaker.

[0003] Existing vacuum circuit breakers are manufactured with a vacuum process to achieve a predetermined vacuum level inside the vacuum interrupter, and rely on the chamber's own sealing structure to maintain this vacuum during operation. During operation, the vacuum circuit breaker typically performs offline vacuum level checks on the vacuum interrupter using specialized instruments during power outages, according to a pre-set maintenance cycle, to determine whether the vacuum level meets the requirements for continued operation.

[0004] However, the aforementioned vacuum circuit breakers still have the following drawbacks: the vacuum level inside the vacuum interrupter can slowly deteriorate due to factors such as aging of seals, micro-cracks in welds, or assembly defects. Existing vacuum circuit breakers generally lack online monitoring methods for the vacuum state and can only rely on fixed-period offline testing to detect the decline in vacuum level. Since vacuum deterioration is a slow and continuous process, and its occurrence is random, fixed-period offline testing is difficult to match with the actual occurrence of vacuum deterioration. During the interval between two tests, even if the vacuum level has deteriorated to the point where it does not meet the breaking requirements, it cannot be detected in time. As a result, the vacuum circuit breaker continues to operate under insufficient vacuum conditions, posing a safety hazard of breaking failure or even causing an accident. Summary of the Invention

[0005] The purpose of this invention is to provide a vacuum circuit breaker with integrated intelligent monitoring function to solve the problem in the prior art that there is a lack of online monitoring means when the vacuum degree of the vacuum interrupter slowly deteriorates, making it difficult to detect insufficient vacuum in time and thus posing a safety hazard of interruption failure.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solution: a vacuum circuit breaker with integrated intelligent monitoring function, comprising: a vacuum circuit breaker body, wherein multiple vacuum interrupters are installed on the vacuum circuit breaker body, and a monitoring component is installed on the vacuum interrupter; a monitoring component, wherein the monitoring component includes a vacuum component and an observation component; a vacuum component, wherein the vacuum component includes a sealed cavity, the sealed cavity is connected to the vacuum interrupter, and a diaphragm is installed inside the sealed cavity; an observation component, wherein the observation component includes a feedback transparent cylinder, the feedback transparent cylinder is connected to the sealed cavity, and a feedback component is installed inside the feedback transparent cylinder; wherein, the diaphragm divides the sealed cavity into two mutually isolated sides, one side of the diaphragm is connected to the vacuum cavity of the vacuum interrupter through the sealed cavity, and the other side of the diaphragm faces the feedback transparent cylinder and is connected to the feedback component; when the vacuum degree of the vacuum interrupter decreases and the internal pressure increases, the diaphragm deforms towards the feedback transparent cylinder and drives the feedback component to operate, so as to output a visual signal reflecting the vacuum state of the vacuum interrupter.

[0007] Preferably, the sealing cavity is provided with a extraction hole, and a sealing bolt is installed in the extraction hole.

[0008] Preferably, the feedback assembly includes a feedback rod disposed within a sealed cavity, the feedback rod being connected to a diaphragm.

[0009] Preferably, a corrugated sealing tube is installed around the feedback rod, and one end of the corrugated sealing tube is connected to the inner wall of the sealing cavity.

[0010] Preferably, the feedback assembly further includes a squeeze sealing cylinder installed inside the feedback transparent cylinder, one end of the feedback rod penetrates the inner wall of the sealing cavity and extends into the squeeze sealing cylinder, and the feedback rod is slidably connected to the squeeze sealing cylinder.

[0011] Preferably, a pair of warning springs are installed inside the extrusion sealing cylinder, with one end of the pre-tightening spring abutting against the feedback rod and the other end abutting against the inner wall of the extrusion sealing cylinder.

[0012] Preferably, a display cylinder is installed at one end of the compression sealing cylinder and communicates with it, and a sealing slider and an indicator rod are slidably connected inside the display cylinder.

[0013] Preferably, a monitoring liquid is provided inside the display cylinder and located between the sealing slider and the indicator rod.

[0014] Preferably, a limiting cylinder is installed at one end of the display cylinder and on the side of the indicator rod, and the limiting cylinder is slidably connected to the indicator rod.

[0015] Preferably, the indicator rod penetrates the inner wall of the feedback transparent cylinder and extends to the outer side of the feedback transparent cylinder, and a limiting strip is installed around the indicator rod.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: 1. This invention provides controlled backflow evacuation by setting a pair of extraction holes on the sealed cavity and cooperating with adjustable flow elements, so that the pressure drop rates on both sides of the diaphragm are close to each other, thereby avoiding damage to the diaphragm due to excessive instantaneous pressure difference during factory vacuuming, and establishing a reliable and repeatable vacuum monitoring benchmark for the diaphragm.

[0017] 2. This invention, by setting a dead-point feedback component composed of inclined pre-tightening springs, amplifies the slow and weak deformation of the diaphragm into a clear and rapid action when the vacuum deteriorates to a set threshold, and converts it into a conspicuous visual signal through the monitoring liquid, thereby realizing online visual monitoring of the vacuum state.

[0018] 3. This invention adds an indicator rod inside the display cylinder and forms a one-way stop with a limit strip, which solidifies the reversible liquid level signal into an irreversible over-limit record. Even if the operating conditions fluctuate, the vacuum deterioration event can be accurately preserved, which improves the traceability and anti-misjudgment ability of the monitoring results. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the vacuum circuit breaker of the present invention; Figure 2 This is a three-dimensional structural diagram of the side of the vacuum circuit breaker of the present invention; Figure 3 This is a schematic diagram of the vacuum interrupter structure of the present invention; Figure 4 This is a schematic diagram of the monitoring component structure of the present invention; Figure 5 This is a schematic cross-sectional view of the monitoring component of the present invention; Figure 6 This is a schematic diagram of the feedback component structure of the present invention; Figure 7 This is a schematic diagram of the extrusion sealing cylinder structure of the present invention; Figure 8 This is a schematic diagram of the indicator rod structure of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Vacuum circuit breaker body; 2. Monitoring component; 3. Vacuum component; 4. Observation component; 11. Vacuum interrupter chamber; 31. Sealing cavity; 32. Extraction hole; 33. Sealing bolt; 34. Diaphragm; 41. Feedback transparent cylinder; 42. Feedback rod; 44. Corrugated sealing tube; 45. Compression sealing cylinder; 46. Warning spring; 47. Display cylinder; 48. Sealing slider; 49. Indicator rod. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] Example 1 Existing vacuum circuit breakers generally lack real-time monitoring methods for the vacuum status of the vacuum interrupter chamber 11. Once the vacuum level deteriorates slowly, it is often difficult to detect in time. Usually, only periodic power outages can be used for testing, which affects the continuity of power supply and poses a risk of missed detection.

[0023] Even with the addition of a pressure-sensitive diaphragm 34 to the arc-extinguishing chamber, a technical issue arises in the manufacturing process. The sealing cavity 31 is connected to the vacuum cavity of the vacuum arc-extinguishing chamber 11 via one side, while the arc-extinguishing chamber has a large volume and a slow pumping rate, whereas the sealing cavity 31 has a small volume and a fast pumping rate.

[0024] If air is directly evacuated from the sealing cavity 31, one side of the sealing cavity 31 will reach a vacuum first, while the other side of the arc-extinguishing chamber will lag behind. This will generate an excessive instantaneous pressure difference on both sides of the diaphragm 34, causing the diaphragm 34 to be crushed or plastically deformed during the manufacturing stage, thus losing its subsequent monitoring capabilities.

[0025] like Figures 1 to 5 As shown, in this embodiment, a pair of extraction holes 32 are provided on the sealing cavity 31, and a sealing bolt 33 is provided in each extraction hole 32. One extraction hole 32 is used to connect to an air pump for air extraction, and the other extraction hole 32 is connected to the outside through an adjustable flow element to form a controlled backflow.

[0026] The diaphragm 34 is installed in the sealed cavity 31 and divides the sealed cavity 31 into two isolated sides. One side is connected to the vacuum cavity of the vacuum interrupter 11 through the sealed cavity 31, and the other side faces the feedback transparent cylinder 41.

[0027] The working process during vacuum debugging is as follows: When the vacuum pump is connected to the extraction port 32 on the extraction side, the vacuum level on the side of the diaphragm 34 facing the feedback transparent cylinder 41 rises first. At the same time, the extraction port 32 on the throttling side is connected to the outside through the adjustable flow element, so that the side can return and replenish gas at a controlled rate, which slows down the rate of decrease of the vacuum level on that side, making it close to the pressure reduction process on the side of the arc extinguishing chamber, thereby keeping the instantaneous pressure difference on both sides of the diaphragm 34 within the elastic safety zone of the diaphragm 34.

[0028] The adjustable flow element includes a throttling housing, one end of which is connected to the extraction hole 32, and the other end is connected to the outside. A throttling orifice is formed inside the throttling housing. An adjusting screw is threaded onto the throttling housing. A conical valve needle is provided at the end of the adjusting screw facing the throttling orifice. The conical valve needle is inserted into the throttling orifice and forms an annular throttling gap with the orifice wall. A locking nut is also screwed onto the adjusting screw.

[0029] The working process of the adjustable flow element is as follows: When the adjusting screw is rotated, the adjusting screw moves forward and backward relative to the throttling housing along its axial direction, thereby driving the conical valve needle to extend into or out of the throttling orifice.

[0030] Because the conical valve needle has a conical surface structure, changes in its axial position continuously increase or decrease the flow area of ​​the annular throttling gap between it and the throttling orifice wall, thereby continuously adjusting the flow conduction of the gas returning through the adjustable flow element. After adjustment, tighten the locking nut to press it against the throttling housing, locking the axial position of the adjusting screw to prevent the flow area from drifting due to vibration during the pumping process.

[0031] Once the overall vacuum level approaches the target value and the pressure difference between the two sides enters the elastic safety zone, the extraction hole 32 on the throttling side is first sealed with a sealing bolt 33, and then the extraction hole 32 on the pumping side is sealed with a sealing bolt 33, so that both sides of the diaphragm 34 are in a near-vacuum equilibrium state, which is used as the monitoring zero point.

[0032] If the vacuum interrupter 11 leaks, the pressure on one side of its inner cavity will increase and exceed that on the other side. The diaphragm 34 will then deform toward the side of the feedback transparent cylinder 41, thereby playing the role of monitoring the vacuum status.

[0033] This embodiment addresses the problem that the significant volume difference between the two sides of the diaphragm 34 can easily lead to interference pressure difference and damage to the diaphragm 34 during factory evacuation. It employs a pair of extraction holes 32 to perform the functions of evacuation and controlled reflux respectively. By adjusting the flow element to actively balance the pressure drop rate on both sides, the pressure difference is controlled at the cost of extending the evacuation time. Furthermore, the zero balance point is locked by first blocking the throttling side and then blocking the evacuation side, thereby providing a reliable and repeatable vacuum monitoring reference without damaging the diaphragm 34.

[0034] The throttling flow rate of the adjustable flow element can be pre-calibrated based on the elastic safety zone of the diaphragm 34 and the pumping rate of the arc-extinguishing chamber to ensure that the pressure drop curves on both sides are as synchronized as possible. The sealing plug 33 and the extraction hole 32 are sealed together, and the sealing performance of the sealing cavity 31 is not affected after sealing.

[0035] like Figures 1 to 3 As shown, in this embodiment, the sealed cavity 31 and the vacuum interrupter 11 are connected by a pipeline. The diaphragm 34 is made of a metal or alloy material with elastic recovery capability, so that the diaphragm 34 can return to its original position after the pressure difference disappears, and can deform stably without rupturing when the pressure difference occurs, thereby ensuring the reliability and repeatability of the monitoring process.

[0036] Example 2 In Embodiment 1, although the diaphragm 34 can deform toward the feedback transparent cylinder 41 as the vacuum level of the vacuum interrupter 11 decreases, the amount of deformation is very small and the deformation process is very slow, and the resulting thrust is also limited.

[0037] If we rely solely on the deformation and displacement of the diaphragm 34 itself for direct observation, it is difficult for the human eye to discern the difference. Moreover, the weak thrust of the diaphragm 34 is insufficient to overcome the resistance of the subsequent transmission links and the gas, which can easily lead to insufficient drive and midway stall, resulting in the vacuum deterioration signal being unable to be clearly read.

[0038] like Figures 5 to 8 As shown, in order to solve the above problems, in this embodiment, a feedback component is installed inside the feedback transparent tube 41 of the observation component 4.

[0039] The feedback assembly includes a feedback rod 42 disposed within a sealed cavity 31 and connected to a diaphragm 34. A corrugated sealing tube 44 is mounted around the feedback rod 42, with one end connected to the inner wall of the sealed cavity 31 and the other end connected to the feedback rod 42. A compression sealing cylinder 45 is installed inside the feedback transparent cylinder 41. One end of the feedback rod 42 penetrates the inner wall of the sealed cavity 31 and extends into the compression sealing cylinder 45, and is slidably connected to the compression sealing cylinder 45.

[0040] A pair of preload springs 46 are installed inside the compression sealing cylinder 45, and a one-way valve is installed on the compression sealing cylinder 45. One end of the preload spring 46 abuts against the feedback rod 42, and the other end abuts against the inner wall of the compression sealing cylinder 45 and is in a preloaded energy storage state.

[0041] A display cylinder 47 is installed at one end of the compression sealing cylinder 45 and is connected to it. A sealing slider 48 is slidably connected inside the display cylinder 47, and a monitoring liquid is provided inside the display cylinder 47 on one side of the sealing slider 48.

[0042] The feedback assembly operates as follows: When the vacuum interrupter 11 leaks, causing the diaphragm 34 to deform towards the feedback transparent cylinder 41, the diaphragm 34 pushes the feedback rod 42 to move in the same direction. The corrugated sealing tube 44 extends and retracts with the axial movement of the feedback rod 42, maintaining the sealing performance of the sealing cavity 31 while ensuring the mobility of the feedback rod 42.

[0043] When the displacement of the feedback rod 42 exceeds the set threshold, the pre-tensioned spring 46, which is in a pre-compression and energy storage state, releases energy and suddenly pushes the feedback rod 42 into place, amplifying the slow and weak deformation signal of the diaphragm 34 into a clear and decisive action.

[0044] When the feedback rod 42 is in position, it compresses and squeezes the gas in the sealing cylinder 45. The gas acts unidirectionally on the sealing slider 48 in the display cylinder 47 through the one-way valve, pushing the sealing slider 48 to move the monitoring liquid along the display cylinder 47, thereby converting the vacuum deterioration of the vacuum interrupter 11 into the visible displacement of the monitoring liquid, and realizing visual monitoring.

[0045] It should be noted that structurally, a pair of preload springs 46 are symmetrically installed inside the compression sealing cylinder 45. Each preload spring 46 is arranged at an angle, with its inner end hinged to the feedback rod 42 and its outer end hinged to the inner wall of the compression sealing cylinder 45. The preload springs 46 are in a pre-compression and energy-storing state. In the initial position of the feedback rod 42, the resultant force of the pair of preload springs 46 points in the direction that keeps the feedback rod 42 in the initial position, thus forming a stable initial positioning state.

[0046] In the initial stage of the feedback rod 42 moving forward from the initial position, the resultant force component of a pair of inclined preload springs 46 is directed toward the initial position. Therefore, the initial displacement of the feedback rod 42 does need to overcome the restoring resistance formed by the preload springs 46, and this resistance gradually increases as the feedback rod 42 moves forward until the axes of the pair of preload springs 46 tend to be collinear at the dead point position.

[0047] The preload and tilt angle of a pair of preload springs 46 are pre-calibrated so that the thrust of the diaphragm 34 can push the feedback rod 42 past the dead point when the vacuum deteriorates to the set threshold.

[0048] Once the dead point is passed, the resultant force of the pair of preload springs 46 immediately reverses to point in the direction of the display cylinder 47. The elastic energy stored in the preload springs 46 is released instantly, and the feedback rod 42 is pushed to the second stable position in front, amplifying the slow and weak crawling displacement into a clear and sufficient positioning action.

[0049] The stroke pushed by the release of energy from the preload spring 46 and the distance that the compressed gas pushes the sealing slider 48 to move the monitoring liquid are both fixed values ​​determined by the geometry of the mechanism and do not change proportionally with the specific degree of vacuum deterioration exceeding the threshold.

[0050] Therefore, the monitoring signal provided in this embodiment is a limit-breaking prompt indicating that the action has reached the set threshold, rather than a proportional measurement of the amount of vacuum degradation. The elastic energy injected by the preload spring 46 will not cause the monitoring result to be inaccurate. Its accuracy is reflected in the trigger threshold, which is precisely determined by the dead-end position of a pair of preload springs 46.

[0051] This embodiment addresses the issues of weak deformation of the diaphragm 34, difficulty in direct observation, and insufficient thrust. A feedback component with a pre-tension spring 46 as the amplification element is set up so that the displacement of the diaphragm 34 triggers the spring to release energy after exceeding the threshold, thus amplifying it into a definite action. This action is then converted into a one-way push of the gas in the sealing cylinder 45 against the sealing slider 48 and the monitoring liquid via a one-way valve. This transforms the invisible micro-deformation into a visible and non-retractable liquid level signal in the display cylinder 47.

[0052] like Figure 5As shown, the one-way valve ensures that the compressed gas can only act in the direction of the display cylinder 47, preventing the monitoring liquid from being drawn back when the feedback rod 42 returns.

[0053] like Figure 6 As shown, the energy release threshold of the preload spring 46 can be pre-calibrated based on the deformation characteristics of the diaphragm 34, so that it will not be triggered under normal pressure or temperature fluctuations, but will only act when the vacuum level is actually deteriorated, in order to avoid false alarms.

[0054] like Figures 4 to 6 As shown, in this embodiment, the feedback transparent cylinder 41 is made of transparent material, so that the displacement of the monitoring liquid in the display cylinder 47 can be directly observed by external personnel. Thus, the vacuum status of the vacuum interrupter 11 can be read without power outage detection, improving the convenience and intuitiveness of monitoring.

[0055] Example 3 In Embodiment 2, after the feedback rod 42 passes the dead point, it is pushed into place by the preload spring 46, compressing the gas inside the sealing cylinder 45. The gas then pushes the sealing slider 48 through the one-way valve, causing the monitoring liquid to move along the display cylinder 47, thus achieving visual monitoring. Although the one-way valve prevents gas from flowing back from the display cylinder 47 into the sealing cylinder 45, the position of the sealing slider 48 within the display cylinder 47 depends on the pressure support of the gas in the sealed section between the one-way valve outlet and the sealing slider 48.

[0056] This section of enclosed gas has a small volume and is highly sensitive to changes in ambient temperature. When the ambient temperature decreases, this section of gas contracts, reducing the supporting pressure on the sealing slider 48. As a result, the sealing slider 48 and the monitoring liquid in front of it may slide back within the display cylinder 47. Similarly, when the temperature rises, the monitoring liquid may be pushed out again, causing the position of the monitoring liquid to change back and forth with temperature fluctuations.

[0057] In this way, when personnel observe afterward, they can only read the instantaneous liquid level under the current operating conditions, rather than the farthest position that the monitoring liquid has reached after the vacuum deterioration is triggered. This cannot accurately reflect whether the vacuum interrupter 11 has actually experienced an over-limit deterioration event, which can easily lead to missed or incorrect judgments.

[0058] like Figure 8 As shown, in order to solve the above problems, in this embodiment, an indicator rod 49 is slidably connected inside the display cylinder 47, and the monitoring liquid is located between the sealing slider 48 and the indicator rod 49.

[0059] One end of the display tube 47 is fitted with a limiting tube on one side of the indicator rod 49, and the limiting tube is slidably connected to the indicator rod 49. The indicator rod 49 passes through the inner wall of the feedback transparent tube 41 and extends to the outer side of the feedback transparent tube 41, and a limiting strip is installed around the indicator rod 49.

[0060] The indicator rod 49 operates as follows: When the monitoring fluid is pushed by the sealing slider 48, the monitoring fluid simultaneously pushes the indicator rod 49 to move in the same direction. When the indicator rod 49 is inside the limiting cylinder, the limiting strip is constrained by the cylinder wall and cannot open. Once the indicator rod 49 is pushed out of the limiting cylinder, the limiting strip opens and abuts against the outer wall of the feedback transparent cylinder 41, forming a one-way stop and preventing the indicator rod 49 from resetting in the opposite direction.

[0061] Even if the monitoring fluid subsequently drops due to pressure or temperature fluctuations, the indicator rod 49 remains locked at its furthest position, thus maintaining the peak record of vacuum deterioration. The indicator rod 49 extends to one end outside the feedback transparent cylinder 41 for external reading, thereby accurately determining the maximum degree of vacuum deterioration that has ever occurred in the vacuum interrupter chamber 11.

[0062] This embodiment addresses the problem that the monitored liquid can rebound bidirectionally, making it impossible to retain deteriorated peak values ​​and easily leading to misjudgments. It sets up a one-way stop mechanism consisting of an indicator rod 49, a limit bar, and a limit cylinder. After the indicator rod 49 is pushed out of the limit cylinder by the monitored liquid, it is locked by the opening of the limit bar, thereby solidifying the instantaneous reversible liquid level signal into an irreversible peak record, improving the reliability of the monitoring results and the ability to resist misjudgments.

[0063] The limiting strip adopts a structure with elastic opening capability. It is pressed and adhered inside the limiting cylinder, and opens on its own after being removed from the limiting cylinder, thereby achieving automatic locking.

[0064] The indicator rod 49 is slidably fitted with the display cylinder 47 and the limiting cylinder, which ensures that the indicator rod 49 can be pushed without affecting the sealing of the monitoring liquid inside the display cylinder 47.

[0065] In this embodiment, the end of the indicator rod 49 extending to the outside of the feedback transparent cylinder 41 can be marked with a scale, so that external personnel can not only determine whether the vacuum interrupter 11 has deteriorated, but also quantitatively read the degree of deterioration based on the locked position of the indicator rod 49, thereby providing a basis for maintenance decisions.

[0066] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed application.

Claims

1. A vacuum circuit breaker with integrated intelligent monitoring function, characterized in that, include: Vacuum circuit breaker body (1), a plurality of vacuum interrupters (11) are installed on the vacuum circuit breaker body (1), and a monitoring component (2) is installed on the vacuum interrupter (11). The monitoring component (2) includes a vacuum component (3) and an observation component (4); Vacuum assembly (3), the vacuum assembly (3) includes a sealed cavity (31), the sealed cavity (31) is connected to the vacuum interrupter (11), and a diaphragm (34) is installed in the sealed cavity (31). The observation component (4) includes a feedback transparent tube (41), which is connected to the sealed cavity (31), and a feedback component is installed inside the feedback transparent tube (41). The diaphragm (34) divides the sealed cavity (31) into two isolated sides. One side of the diaphragm (34) is connected to the vacuum cavity of the vacuum interrupter (11) through the sealed cavity (31), and the other side of the diaphragm (34) faces the feedback transparent cylinder (41) and is connected to the feedback component. When the vacuum level of the vacuum interrupter (11) decreases and the internal pressure increases, the diaphragm (34) deforms towards the feedback transparent cylinder (41) and drives the feedback component to operate, so as to output a visible signal reflecting the vacuum state of the vacuum interrupter (11).

2. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 1, characterized in that, The sealing cavity (31) is provided with a extraction hole (32), and a sealing plug (33) is installed in the extraction hole (32).

3. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 1, characterized in that, The feedback assembly includes a feedback rod (42) disposed in a sealed cavity (31), and the feedback rod (42) is connected to a diaphragm (34).

4. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 3, characterized in that, The feedback rod (42) is surrounded by a corrugated sealing tube (44), one end of which is connected to the inner wall of the sealing cavity (31).

5. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 3, characterized in that, The feedback assembly also includes a squeeze sealing cylinder (45) installed inside the feedback transparent cylinder (41). One end of the feedback rod (42) passes through the inner wall of the sealing cavity (31) and extends into the squeeze sealing cylinder (45). The feedback rod (42) is slidably connected to the squeeze sealing cylinder (45).

6. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 5, characterized in that, A pair of warning springs (46) are installed inside the extrusion sealing cylinder (45). One end of the pre-tightening spring (46) abuts against the feedback rod (42), and the other end abuts against the inner wall of the extrusion sealing cylinder (45).

7. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 5, characterized in that, One end of the compression sealing cylinder (45) is equipped with a display cylinder (47) that is connected to it. A sealing slider (48) and an indicator rod (49) are slidably connected inside the display cylinder (47).

8. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 7, characterized in that, The monitoring liquid is provided inside the display cylinder (47) and located between the sealing slider (48) and the indicator rod (49).

9. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 7, characterized in that, A limiting cylinder is installed at one end of the display cylinder (47) and on the side of the indicator rod (49), and the limiting cylinder is slidably connected to the indicator rod (49).

10. A vacuum circuit breaker with integrated intelligent monitoring function as described in claim 9, characterized in that, The indicator rod (49) penetrates the inner wall of the feedback transparent cylinder (41) and extends to the outside of the feedback transparent cylinder (41), and a limit strip is installed around the indicator rod (49).

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