A pre-warning safety valve leakage observation device

Abstract

This invention discloses a safety valve leakage observation device with early warning capability, relating to the field of safety valve technology. It includes a valve body and a pressure relief pipe. The pressure relief pipe is disposed on one side surface of the valve body, and an equipment housing is installed on the outer surface of the pressure relief pipe. Side plates are fixedly installed on one and another side surfaces of the equipment housing, and a viewing glass window is provided on one side surface of the side plate. This invention achieves proactive photoelectric strong early warning for minor leaks in the safety valve, and provides rapid intelligent isolation and anti-impact protection for internal observation elements when high pressure violently kicks in. This overcomes the shortcomings of existing technologies that rely on manual close-range visual inspection, which cannot provide any immediate high-visibility feedback at long distances at night or during inspection intervals, leading to the normalization of hidden leaks.

Description

Technical Field

[0001] This invention relates to the field of safety valve technology, and in particular to a safety valve leakage observation device with early warning capability. Background Technology

[0002] Safety valves are indispensable overpressure protection devices in industrial production, widely used in pressure vessels and industrial pipelines in industries such as petrochemicals, metallurgy, and power. Under long-term harsh operating conditions, the sealing surface of safety valves often experiences minor leaks, commonly known as hidden leaks, due to impurities, spring aging, or fluid erosion. To monitor these subtle leaks, the current standard practice is to connect a water-sealed observation tank to the exhaust side of the safety valve. By observing whether bubbles emerge from the liquid inside the tank, it can be determined whether a leak has occurred in the safety valve.

[0003] However, existing safety valve leak observation devices face insurmountable operational bottlenecks and physical contradictions in practical heavy industrial applications. Firstly, the conventional water seal bubbling method is severely limited by the on-site installation environment. Safety valves are typically installed high in pipe racks or in remote installation areas. Occasional bubbles from micro-leaks rely entirely on close-range visual inspection, offering no immediate high-visibility feedback at night or during inspection breaks, leading to the normalization of hidden leaks. Secondly, existing equipment struggles to simultaneously collect micro-leaks and release main exhaust gas. Traditional observation devices are usually connected to the exhaust pipeline. When the safety valve experiences normal high-pressure activation, the instantaneous large flow of gas causes a significant amount of water seal liquid in the observation tank to be blown out—a common industrial phenomenon known as liquid runoff—leading to liquid seal failure. After the safety valve reseated, due to liquid loss, the equipment lost its ability to continue monitoring micro-leaks, requiring manual refilling to restore the water seal. This not only significantly increases the workload of tedious daily maintenance but also creates a dangerous monitoring gap. To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0004] The purpose of this invention is to achieve the following: by using the buoyancy of the float to push the trigger plate to trip and the warning light stick to instantly eject and touch the energized plate, combined with the valve stem displacement sensor and the drive motor to rapidly control the valve plate inside the pressure relief pipe to flip ahead, the invention realizes the effect of active photoelectric strong early warning when the safety valve leaks slightly, and rapid intelligent isolation and anti-impact protection for internal observation elements when high pressure violently jumps. This overcomes the shortcomings of existing technologies that rely on manual close-range visual inspection, which cannot provide any immediate high-visibility feedback at a distance at night or during inspection intervals, leading to the normalization of hidden leaks.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a safety valve leakage observation device with early warning capability, comprising a valve body and a pressure relief pipe, wherein the pressure relief pipe is disposed on one side surface of the valve body, an equipment housing is installed on the outer surface of the pressure relief pipe, side plates are fixedly installed on one side and the other side surface of the equipment housing, a viewing glass window is provided on one side surface of the side plate, a limiting slide is installed on the top surface of the inner wall of the equipment housing, a float is installed on the inner wall of the limiting slide, a valve stem is installed on the top surface of the valve body, an early warning component is installed on the top surface of the inner wall of the equipment housing, a valve assembly is installed on the inner wall of the pressure relief pipe, and a reset component is installed on the top surface of the equipment housing; The warning component includes a positioning plate, which is installed on the top surface of the inner wall of the equipment housing. The inner wall of the positioning plate has a rotating groove, and a rotating shaft is installed on the inner wall of the rotating groove. A torsion spring is installed on the outer surface of the rotating shaft, and a trigger plate is installed on the outer surface of the rotating shaft. A limit protrusion is provided on one side surface of the trigger plate. A warning light rod is installed on the inner wall of the positioning plate. A groove is provided on the outer surface of the warning light rod, and a contact point is provided on the top surface of the warning light rod. A trigger spring is installed on the inner wall of the warning light rod, and a spring base plate is installed on the bottom surface of the positioning plate.

[0006] Furthermore, each of the two side plates has a corresponding viewing glass window on one side surface, and the float makes sliding contact with the inner wall of the limiting slide.

[0007] Furthermore, the rotating grooves are two equidistantly distributed on the inner wall of the positioning plate. Rotating shafts are correspondingly distributed on the inner walls of both rotating grooves. A trigger plate is correspondingly distributed on the outer surface of each rotating shaft. Two torsion springs are correspondingly distributed on the outer surface of each rotating shaft. One end of each torsion spring is fixedly connected to the outer surface of the rotating shaft, and the other end is fixedly connected to the inner wall of the positioning plate. The outer surface of the trigger plate slides in contact with the inner wall of the rotating groove. An arc-shaped contact surface is provided at the bottom of the trigger plate, and this arc-shaped contact surface makes movable contact with the top surface of the float.

[0008] Furthermore, the warning light stick slides in contact with the inner wall of the positioning plate, and the contact points are two equidistantly distributed on the top surface of the warning light stick. One end of the trigger spring is fixedly connected to the inner wall of the warning light stick, and the other end of the trigger spring is fixedly connected to the top surface of the spring base plate. The grooves are two equidistantly distributed on the outer surface of the warning light stick, and the grooves are movably engaged with the limiting protrusion.

[0009] Furthermore, the valve assembly includes a rotating rod mounted on the inner wall of the pressure relief pipe, a valve plate mounted on the outer surface of the rotating rod, a drive motor mounted on the bottom surface of the equipment housing, a displacement sensor mounted on the outer surface of the valve rod, and a collection pipe mounted on the top surface of the pressure relief pipe.

[0010] Furthermore, one end of the rotating rod extends from the top surface of the equipment housing to the interior of the pressure relief pipe, the outer surface of the valve plate is in movable contact with the inner wall of the pressure relief pipe, the displacement sensor is electrically connected to the drive motor through an external controller, and the output end of the drive motor is fixedly connected to one end of the rotating rod.

[0011] Furthermore, the reset assembly includes a transparent housing, which is mounted on the top surface of the device housing. The top surface of the transparent housing has a reset hole, and the top surface of the inner wall of the transparent housing is equipped with an electrical contact. An exhaust pipe is mounted on the top surface of the device housing, and a nut is spirally connected to the top surface of the exhaust pipe.

[0012] Furthermore, the power-contact points are two equidistantly distributed on the top surface of the inner wall of the transparent shell, and the power-contact points are in active contact with each other. One end of the exhaust pipe extends from the top surface of the equipment shell into the interior of the equipment shell and communicates with the interior of the float.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: This early warning safety valve leakage observation device uses the buoyancy of the float to push the trigger plate to trip and the warning light stick to instantly touch the energized plate. Combined with the valve stem displacement sensor and the drive motor, it controls the valve plate inside the pressure relief pipe to flip in advance. This achieves the effect of active photoelectric strong early warning when the safety valve leaks slightly, and rapid intelligent isolation and anti-impact protection for internal observation elements when high pressure is violently activated. This makes up for the shortcomings of existing technology that relies on manual close-range visual inspection, which cannot provide any real-time high visibility feedback at night or during inspection intervals, leading to the normalization of hidden leaks. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall external structure of the present invention is shown; Figure 2 This invention is shown as a schematic diagram of its overall external structure from another angle. Figure 3 A schematic diagram of the overall internal structure of the present invention is shown; Figure 4 A schematic diagram of the internal structure of another corner of the present invention is shown; Figure 5 A schematic diagram of the internal structure of the positioning plate of the present invention is shown; Figure 6 A schematic diagram of the internal structure of another corner positioning plate of the present invention is shown; Figure 7 A schematic diagram of the internal structure of the transparent outer shell of the present invention is shown.

[0015] Legend: 1. Valve body; 2. Pressure relief pipe; 3. Equipment casing; 4. Side plate; 5. Viewing glass window; 6. Limiting slide; 7. Float; 8. Valve stem; 9. Positioning plate; 10. Rotating groove; 11. Rotating shaft; 12. Torsion spring; 13. Trigger plate; 14. Limiting protrusion; 15. Warning light bar; 16. Groove; 17. Contact point; 18. Trigger spring; 19. Spring base plate; 20. Arc-shaped contact surface; 21. Rotating rod; 22. Collection pipe; 23. Valve plate; 24. Drive motor; 25. Displacement sensor; 26. Exhaust pipe; 27. Nut; 28. Transparent casing; 29. ​​Reset hole; 30. Electrical contact. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] It should be noted that, in the description of this invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] like Figures 1-7 As shown, a safety valve leakage observation device with early warning capability includes a valve body 1 and a pressure relief pipe 2. The pressure relief pipe 2 is disposed on one side surface of the valve body 1, and an equipment housing 3 is installed on the outer surface of the pressure relief pipe 2. Side plates 4 are fixedly installed on one side and the other side surface of the equipment housing 3. There are two side plates 4, each with a corresponding viewing glass window 5 distributed on one side surface. A limiting slide cylinder 6 is installed on the top surface of the inner wall of the equipment housing 3, and a float 7 is installed on the inner wall of the limiting slide cylinder 6, with the float 7 in sliding contact with the inner wall of the limiting slide cylinder 6. A valve stem 8 is installed on the top surface of the valve body 1, an early warning component is installed on the top surface of the inner wall of the equipment housing 3, a valve assembly is installed on the inner wall of the pressure relief pipe 2, and a reset component is installed on the top surface of the equipment housing 3.

[0019] Example 2 Figures 1-7 As shown, the warning component is installed on the top surface of the inner wall of the equipment housing 3, including a positioning plate 9. The inner wall of the positioning plate 9 has two rotating grooves 10, equidistantly distributed. Each rotating groove 10 has a corresponding rotating shaft 11 on its inner wall. The outer surface of each rotating shaft 11 has a trigger plate 13 and two torsion springs 12. One end of each torsion spring 12 is fixedly connected to the outer surface of the rotating shaft 11, and the other end is fixedly connected to the inner wall of the positioning plate 9. The outer surface of the trigger plate 13 slides in contact with the inner wall of the rotating groove 10. Its bottom has an arc-shaped contact surface 20, which makes movable contact with the top surface of the float 7. A limit protrusion 14 is provided on one side surface of the trigger plate 13. A warning light rod 15 is installed on the inner wall of the positioning plate 9, and the warning light rod 15 slides in contact with the inner wall of the positioning plate 9. A groove 16 is formed on the outer surface of the warning light rod 15, with two grooves 16 evenly distributed on the outer surface. The grooves 16 are movably engaged with the limiting protrusions 14. Two equally distributed contact points 17 are provided on the top surface of the warning light rod 15, and a trigger spring 18 is installed on its inner wall. A spring base plate 19 is installed on the bottom surface of the positioning plate 9. One end of the trigger spring 18 is fixedly connected to the inner wall of the warning light rod 15, and the other end is fixedly connected to the top surface of the spring base plate 19.

[0020] Example 3 Figures 1-7 As shown, the valve assembly is installed inside the pressure relief pipe 2, including a rotating rod 21 installed on the inner wall of the pressure relief pipe 2. A valve plate 23 is installed on the outer surface of the rotating rod 21, and one end of the rotating rod 21 extends from the top surface of the equipment housing 3 into the interior of the pressure relief pipe 2. The outer surface of the valve plate 23 is in movable contact with the inner wall of the pressure relief pipe 2. A drive motor 24 is installed on the bottom surface of the equipment housing 3, and the output end of the drive motor 24 is fixedly connected to one end of the rotating rod 21. A displacement sensor 25 is installed on the outer surface of the valve stem 8, and the displacement sensor 25 is electrically connected to the drive motor 24 through an external controller. A collection pipe 22 is installed on the top surface of the pressure relief pipe 2. The reset assembly is installed on the top surface of the equipment housing 3, including a transparent housing 28. A reset hole 29 is opened on the top surface of the transparent housing 28, and an energized contact 30 is installed on the top surface of its inner wall. The energized contact 30 consists of two equidistantly distributed contacts, and the energized contact 30 is in movable contact with the contact point 17 on the top surface of the warning light rod 15. An exhaust pipe 26 is installed on the top surface of the equipment housing 3. One end of the exhaust pipe 26 extends from the top surface of the equipment housing 3 into the interior of the equipment housing 3 and communicates with the interior of the float 7. A nut 27 is spirally connected to the top surface of the exhaust pipe 26.

[0021] Specific operating procedure: When in normal industrial production monitoring, the safety valve body does not trip, and the device is in a silent standby monitoring phase. At this time, the fluid medium inside the safety valve is within the normal pressure range, and no high-speed airflow passes through the pressure relief pipe 2 fixedly installed on one side of the valve body 1. A sealed liquid-sealed observation chamber is formed between the equipment housing 3 installed on the outer surface of the pressure relief pipe 2 and the pressure relief pipe 2, restricting the float 7 inside the slide 6 to its initial bottom position under its own gravity. At the same time, the warning light rod 15 installed on the inner wall of the positioning plate 9 is firmly locked in the standby position by the dead angle cooperation between the side groove 16 and the limiting protrusion 14 set on one side of the trigger plate 13. The trigger spring 18 installed on the inner wall of the warning light rod 15 is pressed above the spring base plate 19 and is in a highly compressed energy storage state.

[0022] When a minor leak occurs in the safety valve due to wear on the sealing surface or obstruction by impurities, the leaking micro-gas cannot form high enough pressure to break through the pipeline in the pressure relief pipe 2. Instead, it is precisely captured by the collection pipe 22 on the top surface of the pressure relief pipe 2 and quietly introduced into the liquid seal observation chamber inside the equipment housing 3. The gas entering the liquid seal observation chamber will turn into tiny bubbles, which will continuously rise in the liquid seal medium. The inspectors can directly observe the bubbling frequency and the initial state of the float 7 through the viewing glass window 5 fixedly installed on one side surface of the side plate 4. These bubbles will precisely converge and be collected in the float 7 inside the limiting slide 6 on the top surface of the inner wall of the equipment housing 3. Since the float 7 itself has a cup-shaped structure with an open bottom, the micro-leaked gas will accumulate little by little at the top of the inner cavity of the float 7. As the volume of leaked gas accumulated inside the float 7 continues to increase, the upward buoyancy force of the displaced liquid on the float 7 also gradually increases.

[0023] When the accumulated buoyancy is sufficient to overcome the weight of the float 7 itself and the frictional resistance of the upper mechanism, the float 7 begins to slide against the inner wall of the limiting slide 6 and slowly rises. As the float 7 continues to move upward, the top surface of the float 7 will directly and physically contact the arc-shaped contact surface 20 at the bottom of the trigger plate 13. The float 7 uses its ever-increasing strong buoyancy as an upward thrust to forcefully push the trigger plate 13 upward. This thrust forces the trigger plate 13 to overcome the initial preload resistance applied by the torsion spring 12 installed on the outer surface of the rotating shaft 11, causing the two rotating shafts 11, which are equidistantly distributed in the rotating grooves 10 on the inner wall of the positioning plate 9, to rotate coaxially. With the sliding contact and rotation of the trigger plate 13 on the inner wall of the rotating groove 10, the limiting protrusion 14 on one side of its surface, which was originally stuck inside the groove 16 of the warning light rod 15, will gradually be pulled outward along the arc trajectory of rotation.

[0024] The moment the limiting protrusion 14 completely slides out of the groove 16, the warning light stick 15 is completely freed from physical locking. At this moment, the previously compressed trigger spring 18 instantly releases enormous elastic potential energy, using the top surface of the spring base plate 19 as a support point, violently launching the warning light stick 15 upwards at extremely high speed along the inner wall of the positioning plate 9. At the end of the violent upward stroke of the warning light stick 15, the two equidistant contact points 17 on its top surface will precisely and forcefully impact and adhere to the energized contact 30 installed on the top of the inner wall of the transparent outer shell 28 covering the top surface of the equipment housing 3. The instant the contact point 17 and the energized contact 30 physically come into contact, the internal audible and visual alarm circuit is immediately activated, and the warning light stick 15 emits an extremely conspicuous high-frequency flashing bright light under the protection of the transparent outer shell 28. This warning method, which combines pure mechanical tripping with instantaneous energization and illumination, completely transforms passive manual inspection into active and powerful photoelectric alarm.

[0025] In another extreme operating condition, when a drastic fluctuation in system pressure causes the safety valve to normally open and release pressure, the electromechanical linkage valve assembly of this device will instantly intervene to provide proactive protection. At the moment the safety valve opens, the valve stem 8 mounted on the top surface of the valve body 1 will undergo a violent upward displacement. The displacement sensor 25, mounted close to the outer surface of the valve stem 8, can sensitively capture this sudden displacement signal within a fraction of a millisecond. The displacement sensor 25 then transmits this critical signal to the external controller via an electrical connection line. After microsecond-level logic judgment, the controller immediately sends a full-power start command to the drive motor 24 mounted on the bottom surface of the equipment housing 3. The output of the drive motor 24 instantly exerts force, driving the rotating rod 21, which is fixedly connected at one end and extends into the pressure relief pipe 2, to rotate rapidly. The rotation of the rotating rod 21 causes the valve plate 23 mounted on its outer surface to flip at a large angle against the inner wall of the pressure relief pipe 2, instantly turning the valve plate 23, which was originally in contact with the inner wall forming a flow obstruction, into a fully open state. Thanks to the advanced and rapid linkage between displacement sensor 25 and drive motor 24, the high-pressure destructive air wave can be smoothly discharged into the atmosphere through pressure relief pipe 2, perfectly preventing high-pressure gas from illegally entering the equipment casing 3 and causing devastating impact on the fragile float 7 and precision early warning components.

[0026] After on-site inspection, troubleshooting, or pressure relief, the operator needs to perform maintenance and reset operations on the entire device. First, the operator manually unscrews the nut 27, which is connected to the top surface of the exhaust pipe 26, by rotating the screw in the opposite direction. Since one end of the exhaust pipe 26 extends from the top surface of the equipment housing 3 into the housing and communicates with the interior of the float 7, once the nut 27 is unscrewed, the pressurized leaking air accumulated inside the float 7 will be quickly discharged into the outside atmosphere through the exhaust pipe 26. After losing the buoyancy support of the internal gas, the float 7 will smoothly sink back to its initial position at the bottom of the limiting slide 6 under its own weight.

[0027] Subsequently, the operator inserts a dedicated pressing tool or insulated lever into the reset hole 29 on the top surface of the transparent housing 28, applying downward vertical pressure to the upward-spreading warning light stick 15. As the warning light stick 15 is gradually pressed downward, the contact point 17 separates from the energized contact 30, and the alarm light immediately goes out. During the continued downward pressure, the trigger spring 18 on the inner wall of the warning light stick 15 is forcibly compressed again. When the groove 16 on the outer surface of the warning light stick 15 descends to the corresponding horizontal position, the previously pushed-open trigger plate 13, under the strong torsional rebound of the torsion spring 12, instantly reverses and rotates, causing the limiting protrusion 14 on its side to precisely re-engage into the groove 16 of the warning light stick 15 with a crisp mechanical engagement sound. At this point, the warning light stick 15 is securely locked again. Finally, the operator tightens nut 27 back onto the top surface of exhaust pipe 26 to restore the system seal. The entire safety valve leak observation device then completes its mechanical and electrical reset and re-enters the next cycle of silent and highly alert real-time monitoring. The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A safety valve leakage observation device with early warning capability, comprising a valve body (1) and a pressure relief pipe (2), wherein the pressure relief pipe (2) is disposed on one side surface of the valve body (1), characterized in that: The outer surface of the pressure relief pipe (2) is fitted with an equipment housing (3). A side plate (4) is fixedly installed on one side and the other side of the equipment housing (3). A viewing glass window (5) is provided on one side of the side plate (4). A limiting slide cylinder (6) is installed on the top surface of the inner wall of the equipment housing (3). A float cylinder (7) is installed on the inner wall of the limiting slide cylinder (6). A valve stem (8) is installed on the top surface of the valve body (1). A warning component is installed on the top surface of the inner wall of the equipment housing (3). A valve assembly is installed on the inner wall of the pressure relief pipe (2). A reset component is installed on the top surface of the equipment housing (3). The warning component includes a positioning plate (9), which is installed on the top surface of the inner wall of the equipment housing (3). The inner wall of the positioning plate (9) has a rotating groove (10), and a rotating shaft (11) is installed on the inner wall of the rotating groove (10). A torsion spring (12) is installed on the outer surface of the rotating shaft (11), and a trigger plate (13) is installed on the outer surface of the rotating shaft (11). A limit protrusion (14) is provided on one side surface of the trigger plate (13). A warning light rod (15) is installed on the inner wall of the positioning plate (9). A groove (16) is provided on the outer surface of the warning light rod (15). A contact point (17) is provided on the top surface of the warning light rod (15). A trigger spring (18) is installed on the inner wall of the warning light rod (15). A spring base plate (19) is installed on the bottom surface of the positioning plate (9).

2. The safety valve leakage observation device with early warning capability according to claim 1, characterized in that, One side surface of each of the two side plates (4) is provided with a viewing glass window (5), and the float (7) slides in contact with the inner wall of the limiting slide (6).

3. The safety valve leakage observation device with early warning capability according to claim 1, characterized in that, The rotating groove (10) consists of two equally spaced grooves on the inner wall of the positioning plate (9). The inner walls of the two rotating grooves (10) are respectively distributed with rotating shafts (11). The outer surface of each rotating shaft (11) is respectively distributed with trigger plates (13). The outer surface of each rotating shaft (11) is respectively distributed with two torsion springs (12). One end of the torsion spring (12) is fixedly connected to the outer surface of the rotating shaft (11), and the other end of the torsion spring (12) is fixedly connected to the inner wall of the positioning plate (9). The outer surface of the trigger plate (13) is in sliding contact with the inner wall of the rotating groove (10). The bottom of the trigger plate (13) is provided with an arc-shaped contact surface (20). The arc-shaped contact surface (20) is in movable contact with the top surface of the float (7).

4. The safety valve leakage observation device with early warning capability according to claim 1, characterized in that, The warning light rod (15) slides in contact with the inner wall of the positioning plate (9). The contact points (17) are two equidistantly distributed on the top surface of the warning light rod (15). One end of the trigger spring (18) is fixedly connected to the inner wall of the warning light rod (15), and the other end of the trigger spring (18) is fixedly connected to the top surface of the spring base plate (19). The grooves (16) are two equidistantly distributed on the outer surface of the warning light rod (15), and the grooves (16) are movably engaged with the limiting protrusions (14).

5. The safety valve leakage observation device with early warning capability according to claim 1, characterized in that, The valve assembly includes a rotating rod (21) mounted on the inner wall of the pressure relief pipe (2), a valve plate (23) mounted on the outer surface of the rotating rod (21), a drive motor (24) mounted on the bottom surface of the equipment housing (3), a displacement sensor (25) mounted on the outer surface of the valve stem (8), and a collection pipe (22) mounted on the top surface of the pressure relief pipe (2).

6. The safety valve leakage observation device with early warning capability according to claim 5, characterized in that, One end of the rotating rod (21) extends from the top surface of the equipment housing (3) to the inside of the pressure relief pipe (2). The outer surface of the valve plate (23) is in contact with the inner wall of the pressure relief pipe (2). The displacement sensor (25) is electrically connected to the drive motor (24) through an external controller. The output end of the drive motor (24) is fixedly connected to one end of the rotating rod (21).

7. The safety valve leakage observation device with early warning capability according to claim 1, characterized in that, The reset assembly includes a transparent housing (28), which is installed on the top surface of the device housing (3). The top surface of the transparent housing (28) has a reset hole (29). The top surface of the inner wall of the transparent housing (28) is equipped with an electrical contact (30). The top surface of the device housing (3) is equipped with an exhaust pipe (26), and the top surface of the exhaust pipe (26) is spirally connected with a nut (27).

8. The safety valve leakage observation device with early warning capability according to claim 7, characterized in that, The power contacts (30) are two equidistantly distributed on the top surface of the inner wall of the transparent shell (28). The power contacts (30) and the contact point (17) are in active contact. One end of the exhaust pipe (26) extends from the top surface of the equipment shell (3) into the interior of the equipment shell (3) and communicates with the interior of the float (7).

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