Valve sealing performance test system and method for high-temperature and high-voltage power station

Abstract

The invention relates to the technical field of sealing performance testing, in particular to a valve sealing performance testing system for a high-temperature and high-voltage power station. The outer side of the driving mechanism is fixedly connected with the outer side of the reservoir, and the driving mechanism is symmetrically arranged along the central axis of the reservoir; the outer side of the detection mechanism is fixedly connected with the outer side of the driving mechanism, the detection mechanism is used for detecting the sealing performance of the valve, the detection mechanism is arranged, air is blown into the vent pipe through the air jet, air flow enters the valve after passing through a non-return assembly installed in the vent pipe, and due to the fact that the valve is in an open state at the moment, the air flow can enter the valve; and if the airtightness of the valve is poor, the gas leaks from the valve, finally the gas emerges from the water surface in the reservoir in a bubble form, and the water in the reservoir can be prevented from flowing back into the detection mechanism by arranging the non-return assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing test, and in particular to a valve sealing test system and method for high-temperature and high-pressure power stations. Background Art

[0002] High temperature and high pressure power station valves are specially designed and manufactured for use in power station systems operating under high temperature and high pressure environments. They can withstand the passage of high temperature media without deformation or damage. At the same time, they can also withstand the effects of high pressure to ensure the safe operation of the system. In power stations and other fields, the sealing of the valve is crucial to the safe operation of the system.

[0003] In the prior art, when the valve is used under high temperature and high pressure conditions, the requirements for valve sealing are more stringent. When testing the sealing of the valve in the prior art, the detection method is single, and the signal fed back to the staff is single, which may cause problems such as inaccurate testing and complicated operation. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention solves the technical problems by adopting a technical solution: a valve sealing test system for a high-temperature and high-pressure power station, comprising: a water reservoir; a driving mechanism, the outer side of the driving mechanism is fixedly connected to the outer side of the water reservoir, and the driving mechanism is symmetrically arranged along the central axis of the water reservoir; a detection mechanism, the outer side of the detection mechanism is fixedly connected to the outer side of the driving mechanism, and the detection mechanism is used to detect the sealing of the invention; The driving mechanism comprises a fixed seat, a mounting seat is arranged at the bottom of the fixed seat, a hydraulic telescopic rod is rotatably connected to the top of the mounting seat, a movable rod is rotatably connected to the output end of the hydraulic telescopic rod, a pin is fixedly connected to one end of the movable rod away from the hydraulic telescopic rod, an outer wall of the pin is rotatably connected to the inner wall of the fixed seat, the driving mechanism drives the detection mechanism to rotate, and the fixed valve is placed in the water reservoir; The detection mechanism includes a rotating frame, the inner wall of the rotating frame is fixedly connected to a ventilation pipe, one side of the ventilation pipe is fixedly connected to a jet, the other side of the ventilation pipe is fixedly connected to a connecting frame, the side of the connecting frame away from the ventilation pipe is fixedly connected to a pneumatic push rod, the output end of the pneumatic push rod is fixedly connected to an air cylinder, the top of the air cylinder is fixedly connected to an exhaust cylinder, the top of the ventilation pipe is fixedly connected to a pressure relief assembly, the inner walls of the ventilation pipe and the air cylinder are both fixedly connected to a check assembly, and when fixing the valve, the joint on one side of the valve is first pressed against the outside of the ventilation pipe, and then the output end of the pneumatic push rod fixedly connected to the connecting frame drives the air cylinder to approach the joint on the other side of the valve and presses it.

[0005] Preferably, the bottom of the fixed seat is fixedly connected to the top of the water reservoir, the outer wall of the water reservoir is fixedly connected to the outer wall of the mounting seat, and the side of the pin shaft away from the movable rod is fixedly connected to the outer wall of the rotating frame. When the pin shaft rotates along the inner wall of the fixed seat, the ventilation pipe can be driven to deflect together through the rotating frame.

[0006] Preferably, the check assembly includes a fixed ring, the inner wall of the fixed ring is fixedly connected to a fixed cylinder, the outer wall of the fixed cylinder is slidably connected to a sliding ring, the outer wall of the sliding ring is fixedly connected to a compression spring, and the outer wall of the fixed ring is fixedly connected to a limiting rod. When gas passes through the check assembly, the airflow pushes the sliding ring to slide along the outer wall of the fixed cylinder, and the compression spring is compressed at this time, and the airflow can be discharged through the air guide hole.

[0007] Preferably, the side of the compression spring away from the sliding ring is fixedly connected to the outer wall of the fixed ring, the outer wall of the limit rod is slidably connected to the inner wall of the sliding ring, and an air guide hole is opened in the wall of the fixed cylinder. The limit rod can prevent the sliding ring from rotating relative to the fixed cylinder when sliding, thereby preventing the water in the water reservoir from flowing back into the detection mechanism. At the same time, the elastic force of the compression spring can also be used to pressurize the gas in the valve. If the air tightness of the valve is unqualified, the pressurized gas will accelerate the speed of bubble generation.

[0008] Preferably, the pressure relief assembly includes a pressure relief pipe, the top of which is fixedly connected to an alarm assembly, the inner wall of the pressure relief pipe is fixedly connected to a porous fixing plate, the inner wall of the porous fixing plate is slidably connected to a sliding rod, the top of the sliding rod is fixedly connected to a porous piston plate, the inner wall of the porous piston plate is plugged with a plunger ring, and the bottom of the porous piston plate is fixedly connected to a tension spring. As the pressure in the valve core and the ventilation pipe gradually increases, the gas enters the pressure relief pipe and pushes the porous piston plate upward after passing through the porous fixing plate and the plunger ring. At this time, the tension spring can be stretched under force.

[0009] Preferably, the outer wall of the porous piston plate is slidably connected to the inner wall of the pressure relief pipe, the inner wall of the pressure relief pipe is fixedly connected to the outer wall of the plunger ring, the bottom end of the tension spring is fixedly connected to the top of the porous fixed plate, the bottom of the pressure relief pipe is fixedly connected to the top of the ventilation pipe, and when the porous piston plate is separated from the surface of the plunger ring, the gas is eventually discharged through the holes opened on the surface of the porous piston plate and enters the alarm assembly, thereby preventing the valve from being damaged due to excessive internal pressure during detection, and the sliding rod can move with the porous piston plate to limit the maximum movement stroke of the porous piston plate.

[0010] Preferably, the alarm assembly includes a shell, the inner wall of the shell is fixedly connected to a metal spring, the inner wall of the shell is fixedly connected to a limit frame, the inner wall of the limit frame is rotatably connected to a rotating shaft through a bearing, the bottom end of the rotating shaft is fixedly connected to a fan blade, the top end of the rotating shaft is fixedly connected to an energy storage disk, the bottom of the energy storage disk is rotatably connected to a knocking ball, the gas discharged from the holes opened on the surface of the porous piston plate drives the fan blades to rotate, and at this time the fan blades drive the energy storage disk to rotate through the rotating shaft.

[0011] Preferably, the outer wall of the knocking ball contacts the outer wall of the metal dome, the metal dome is arranged in a circular array along the central axis of the shell, the bottom of the shell is fixedly connected to the top of the pressure relief pipe, and when the energy storage disk rotates, the knocking ball deflects from the energy storage disk under the action of centrifugal force, and hits the metal dome fixedly connected to the shell during the rotation, thereby issuing an alarm prompt sound.

[0012] A method for using a valve sealing test system for a high-temperature and high-pressure power station comprises the following steps: Step 1: Use the detection mechanism to fix the valve for high temperature and high pressure power station; Step 2: The driving mechanism drives the detection mechanism to rotate, and the high-temperature and high-pressure power station valve is placed into the water reservoir; Step 3: Close the valve core, and then use the detection mechanism to detect the sealing of the high-temperature and high-pressure power station valve; Step 4: Open the valve core, and then use the detection mechanism to conduct a secondary test on the sealing of the high-temperature and high-pressure power station valve.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention sets a detection mechanism and blows air into the vent pipe through a jet. The airflow enters the valve after passing through the check assembly installed in the vent pipe. Since the valve is in an open state at this time, if the airtightness of the valve is poor, the gas will leak out of the valve, and finally the gas will emerge from the water surface in the water reservoir in the form of bubbles.

[0014] 2. The present invention provides a check assembly. When gas passes through the check assembly, the airflow pushes the sliding ring to slide along the outer wall of the fixed tube. At this time, the compression spring is compressed and the airflow can be discharged through the air guide hole. The limit rod can prevent the sliding ring from rotating relative to the fixed tube when sliding, thereby preventing the water in the water reservoir from flowing back into the detection mechanism.

[0015] 3. The present invention sets a check assembly and uses the elastic force of a compression spring to pressurize the gas in the valve. If the air tightness of the valve is unqualified, the pressurized gas will accelerate the speed of bubble generation, making the detection effect more obvious.

[0016] 4. The present invention provides a pressure relief component. During the process of testing qualified valves, as the pressure in the valve core and the vent pipe gradually increases, gas enters the pressure relief pipe, forcing the porous piston plate to separate from the surface of the plunger ring, and finally the gas is discharged through the holes opened on the surface of the porous piston plate, thereby preventing the valve from being damaged due to excessive pressure inside the valve during testing.

[0017] 5. The present invention sets an alarm component. When gas enters the alarm component, the gas pushes the fan blades to rotate. At this time, the fan blades drive the energy storage disk to rotate through the rotating shaft. While the energy storage disk is rotating, the striking ball hits the metal shrapnel fixedly connected to the outer shell under the action of centrifugal force, thereby issuing an alarm prompt sound. By setting the energy storage disk, the time for the alarm prompt sound to be issued can also be extended, thereby assisting the staff to judge whether the air tightness of the valve is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the driving mechanism of the present invention; Figure 4 It is a structural schematic diagram of the detection mechanism of the present invention; Figure 5 It is a structural schematic diagram of the non-return assembly of the present invention; Figure 6 It is a structural schematic diagram of the pressure relief assembly of the present invention; Figure 7 It is a structural schematic diagram of the alarm component of the present invention.

[0019] In the figure: 1, water reservoir; 2, driving mechanism; 3, detection mechanism; 21, fixed seat; 22, mounting seat; 23, hydraulic telescopic rod; 24, movable rod; 25, pin shaft; 31, rotating frame; 32, ventilation pipe; 33, jet; 34, connecting frame; 35, pneumatic push rod; 36, air guide cylinder; 37, exhaust cylinder; 38, pressure relief assembly; 39, check assembly; 391, fixing ring; 392, fixing cylinder; 393, sliding ring ; 394, limit rod; 395, compression spring; 396, air guide hole; 381, pressure relief pipe; 382, ​​alarm assembly; 383, porous fixing plate; 384, sliding rod; 385, porous piston plate; 386, tension spring; 387, plunger ring; 3821, housing; 3822, limit frame; 3823, metal shrapnel; 3824, rotating shaft; 3825, fan blade; 3826, energy storage disk; 3827, knocking ball. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0021] Example: See Figure 1 - Figure 7 The present invention provides a technical solution: a valve sealing test system for a high-temperature and high-pressure power station, comprising: a water reservoir 1; a driving mechanism 2, the outer side of the driving mechanism 2 is fixedly connected to the outer side of the water reservoir 1, and the driving mechanism 2 is symmetrically arranged along the central axis of the water reservoir 1; a detection mechanism 3, the outer side of the detection mechanism 3 is fixedly connected to the outer side of the driving mechanism 2, and the detection mechanism 3 is used to detect the sealing of the invention, the valve is fixed by the detection mechanism 3, and then the driving mechanism 2 drives the detection mechanism 3 to rotate, and the fixed valve is placed in the water reservoir 1, and then the detection mechanism 3 blows air into the valve to observe whether bubbles are generated in the water reservoir, thereby detecting the sealing of the valve; The driving mechanism 2 includes a fixed seat 21, a mounting seat 22 is provided at the bottom of the fixed seat 21, a hydraulic telescopic rod 23 is rotatably connected to the top of the mounting seat 22, a movable rod 24 is rotatably connected to the output end of the hydraulic telescopic rod 23, a pin 25 is fixedly connected to the end of the movable rod 24 away from the hydraulic telescopic rod 23, and the outer wall of the pin 25 is rotatably connected to the inner wall of the fixed seat 21. When the valve is opened, the hydraulic telescopic rod 23 rotatably connected to the mounting seat 22 contracts, so that the movable rod 24 deflects downward along the pin 25. At this time, the pin 25 rotates along the inner wall of the fixed seat 21 and drives the ventilation pipe 32 to deflect together through the rotating frame 31 until the interfaces on both sides of the valve are completely below the liquid level in the water reservoir 1. At this time, the sealing of the interfaces on both sides of the valve can be tested; The detection mechanism 3 includes a rotating frame 31, the inner wall of the rotating frame 31 is fixedly connected to a vent pipe 32, one side of the vent pipe 32 is fixedly connected to a jet 33, the other side of the vent pipe 32 is fixedly connected to a connecting frame 34, the side of the connecting frame 34 away from the vent pipe 32 is fixedly connected to a pneumatic push rod 35, the output end of the pneumatic push rod 35 is fixedly connected to an air guide cylinder 36, the top of the air guide cylinder 36 is fixedly connected to an exhaust cylinder 37, the top of the vent pipe 32 is fixedly connected to a pressure relief assembly 38, and the inner walls of the vent pipe 32 and the air guide cylinder 36 are fixedly connected to the inner wall of the vent pipe 32 and the air guide cylinder 36. A check assembly 39 is fixedly connected, the bottom of the fixed seat 21 is fixedly connected to the top of the water reservoir 1, the outer wall of the water reservoir 1 is fixedly connected to the outer wall of the mounting seat 22, and the side of the pin shaft 25 away from the movable rod 24 is fixedly connected to the outer wall of the rotating frame 31. When fixing the valve, first press the joint on one side of the valve to the outside of the vent pipe 32, and then the output end of the pneumatic push rod 35 fixedly connected to the connecting frame 34 drives the air guide cylinder 36 to approach the joint on the other side of the valve and press it, so that the valve can be fixed.

[0022] The check assembly 39 includes a fixed ring 391, the inner wall of the fixed ring 391 is fixedly connected to a fixed cylinder 392, the outer wall of the fixed cylinder 392 is slidably connected to a sliding ring 393, the outer wall of the sliding ring 393 is fixedly connected to a compression spring 395, the outer wall of the fixed ring 391 is fixedly connected to a limiting rod 394, the side of the compression spring 395 away from the sliding ring 393 is fixedly connected to the outer wall of the fixed ring 391, the outer wall of the limiting rod 394 is slidably connected to the inner wall of the sliding ring 393, and an air guide hole 396 is opened in the wall of the fixed cylinder 392. In the ventilation pipe 32, the fixed ring 391 in the check assembly 39 is fixedly connected to the inner wall of the ventilation pipe 32, and the sliding ring 393 slides along the inner wall of the ventilation pipe 32. 36, the fixed ring 391 in the check assembly 39 is fixedly connected to the inner wall of the air guide cylinder 36, and the sliding ring 393 slides along the inner wall of the air guide cylinder 36. When gas passes through the check assembly 39, the airflow pushes the sliding ring 393 to slide along the outer wall of the fixed cylinder 392. At this time, the compression spring 395 is compressed, and the airflow can be discharged through the air guide hole 396. The limit rod 394 can prevent the sliding ring 393 from rotating relative to the fixed cylinder 392 when sliding, thereby preventing the water in the water reservoir 1 from flowing back into the detection mechanism 3. At the same time, the elastic force of the compression spring 395 can also be used to pressurize the gas in the valve. If the air tightness of the valve is not up to standard, the pressurized gas will accelerate the speed of bubble generation, making the detection effect more obvious.

[0023] The pressure relief assembly 38 includes a pressure relief pipe 381, the top of which is fixedly connected to an alarm assembly 382, ​​the inner wall of the pressure relief pipe 381 is fixedly connected to a porous fixing plate 383, the inner wall of the porous fixing plate 383 is slidably connected to a sliding rod 384, the top of the sliding rod 384 is fixedly connected to a porous piston plate 385, the inner wall of the porous piston plate 385 is plugged with a plunger ring 387, the bottom of the porous piston plate 385 is fixedly connected to a tension spring 386, the outer wall of the porous piston plate 385 is slidably connected to the inner wall of the pressure relief pipe 381, the inner wall of the pressure relief pipe 381 is fixedly connected to the outer wall of the plunger ring 387, the bottom end of the tension spring 386 is fixedly connected to the top of the porous fixing plate 383, and the bottom of the pressure relief pipe 381 is fixedly connected to the outer wall of the plunger ring 387. The top of the vent pipe 32 is fixedly connected to the top of the vent pipe 32. During the inspection of qualified valves, as the pressure in the valve core and the vent pipe 32 gradually increases, the gas enters the pressure relief pipe 381, and after passing through the porous fixed plate 383 and the plunger ring 387, the porous piston plate 385 is pushed to move upward. At this time, the tension spring 386 is stretched, and the porous piston plate 385 is separated from the surface of the plunger ring 387. Finally, the gas is discharged through the holes opened on the surface of the porous piston plate 385 and enters the alarm component 382, ​​thereby preventing the valve from being damaged due to excessive internal pressure during inspection. The sliding rod 384 can move with the porous piston plate 385 to limit the maximum movement stroke of the porous piston plate 385.

[0024] The alarm component 382 includes a shell 3821, the inner wall of the shell 3821 is fixedly connected with a metal spring 3823, the inner wall of the shell 3821 is fixedly connected with a limit frame 3822, the inner wall of the limit frame 3822 is rotatably connected with a rotating shaft 3824 through a bearing, the bottom end of the rotating shaft 3824 is fixedly connected with a fan blade 3825, the top of the rotating shaft 3824 is fixedly connected with an energy storage disk 3826, the bottom of the energy storage disk 3826 is rotatably connected with a knocking ball 3827, the outer wall of the knocking ball 3827 is in contact with the outer wall of the metal spring 3823, the metal spring 3823 is arranged in a circular array along the central axis of the shell 3821, the bottom of the shell 3821 is fixedly connected with the top of the pressure relief pipe 381, and when gas enters the alarm component 3821, the alarm component 3821 is turned on and off. 82, the gas discharged from the holes opened on the surface of the porous piston plate 385 pushes the fan blades 3825 to rotate. At this time, the fan blades 3825 drive the energy storage disk 3826 to rotate through the rotating shaft 3824. While the energy storage disk 3826 is rotating, the knocking ball 3827 is deflected from the energy storage disk 3826 under the action of centrifugal force, and hits the metal spring piece 3823 fixedly connected to the shell 3821 during the rotation, thereby issuing an alarm prompt sound, thereby assisting the staff to determine whether the air tightness of the valve is qualified. When the jet 33 stops blowing, the energy storage disk 3826 can continue to rotate under the action of inertia, thereby extending the time when the alarm prompt sound is issued, and the limit frame 3822 can limit the position of the rotating shaft 3824.

[0025] A method for using a valve sealing test system for a high-temperature and high-pressure power station comprises the following steps: Step 1: Use the detection mechanism 3 to fix the valve for the high temperature and high pressure power station; Step 2: The driving mechanism 2 drives the detection mechanism 3 to rotate, and the high-temperature and high-pressure power station valve is placed into the water reservoir 1; Step 3: close the valve core, and then use the detection mechanism 3 to detect the sealing performance of the high-temperature and high-pressure power station valve; Step 4: Open the valve core, and then use the detection mechanism 3 to perform a secondary test on the sealing of the high-temperature and high-pressure power station valve.

[0026] Working principle: When in use, the valve is fixed by the detection mechanism 3, and then the driving mechanism 2 drives the detection mechanism 3 to rotate, and the fixed valve is placed in the water reservoir 1, and then the detection mechanism 3 blows air into the valve to observe whether bubbles are generated in the water reservoir, thereby detecting the sealing of the valve; When fixing the valve, first press the joint on one side of the valve against the outer side of the vent pipe 32, and then the output end of the pneumatic push rod 35 fixedly connected to the connecting frame 34 drives the air guide cylinder 36 to approach the joint on the other side of the valve and press it, thereby fixing the valve; Then, the valve is opened, and the hydraulic telescopic rod 23 rotatably connected to the mounting seat 22 is contracted, so that the movable rod 24 deflects downward along the pin shaft 25. At this time, the pin shaft 25 rotates along the inner wall of the fixing seat 21, and drives the vent pipe 32 to deflect together through the rotating frame 31, until the interfaces on both sides of the valve are completely located below the liquid level in the water reservoir 1. At this time, the sealing of the interfaces on both sides of the valve can be tested; In the vent pipe 32, the fixed ring 391 in the check assembly 39 is fixedly connected to the inner wall of the vent pipe 32, and the sliding ring 393 slides along the inner wall of the vent pipe 32. In the air guide cylinder 36, the fixed ring 391 in the check assembly 39 is fixedly connected to the inner wall of the air guide cylinder 36, and the sliding ring 393 slides along the inner wall of the air guide cylinder 36. When gas passes through the check assembly 39, the airflow pushes the sliding ring 393 to slide along the outer wall of the fixed cylinder 392. At this time, the compression spring 395 is compressed, and the airflow can be discharged through the air guide hole 396. The limit rod 394 can prevent the sliding ring 393 from rotating relative to the fixed cylinder 392 when sliding, thereby preventing the water in the water reservoir 1 from flowing back into the detection mechanism 3. At the same time, the elastic force of the compression spring 395 can also be used to pressurize the gas in the valve. If the air tightness of the valve is unqualified, the pressurized gas will accelerate the speed of bubble generation, making the detection effect more obvious. After that, the valve is closed and air is continuously ventilated into the valve. At this time, the gas enters the valve after passing through the check assembly 39 in the vent pipe 32. Under the obstruction of the valve core, the pressure inside the valve gradually increases. At this time, if gas comes out of the exhaust pipe 37 or bubbles are generated in the water reservoir 1, the air tightness test result of the valve is unqualified; when the air tightness test of the valve is qualified, the gas will be discharged from the pressure relief assembly 38; During the process of testing qualified valves, as the pressure in the valve core and the vent pipe 32 gradually increases, the gas enters the pressure relief pipe 381, and after passing through the porous fixing plate 383 and the plunger ring 387, pushes the porous piston plate 385 to move upward, at which time the tension spring 386 is stretched, and at the same time, the porous piston plate 385 is separated from the surface of the plunger ring 387, and finally the gas is discharged through the holes opened on the surface of the porous piston plate 385 and enters the alarm component 382, ​​thereby preventing the valve from being damaged due to excessive pressure inside the valve during testing, and the sliding rod 384 can move with the porous piston plate 385 to limit the maximum movement stroke of the porous piston plate 385; When the gas enters the alarm assembly 382, ​​the gas discharged from the holes opened on the surface of the porous piston plate 385 pushes the fan blades 3825 to rotate. At this time, the fan blades 3825 drive the energy storage disk 3826 to rotate through the rotating shaft 3824. While the energy storage disk 3826 rotates, the knocking ball 3827 is deflected from the energy storage disk 3826 under the action of centrifugal force, and hits the metal spring piece 3823 fixedly connected to the shell 3821 during the rotation, thereby issuing an alarm prompt sound, thereby assisting the staff to determine whether the valve tightness is qualified. When the jet 33 stops blowing, the energy storage disk 3826 can continue to rotate under the action of inertia, thereby extending the time for the alarm prompt sound to be issued, and the limit frame 3822 can limit the position of the rotating shaft 3824.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A valve sealing test system for high temperature and high pressure power stations, comprising: Reservoir (1); A driving mechanism (2), wherein the outer side of the driving mechanism (2) is fixedly connected to the outer side of the water reservoir (1), and the driving mechanism (2) is symmetrically arranged along the central axis of the water reservoir (1); A detection mechanism (3), the outer side of the detection mechanism (3) is fixedly connected to the outer side of the driving mechanism (2), and the detection mechanism (3) is used to detect the sealing performance of the invention; The driving mechanism (2) comprises a fixed seat (21), a mounting seat (22) is arranged at the bottom of the fixed seat (21), a top of the mounting seat (22) is rotatably connected to a hydraulic telescopic rod (23), an output end of the hydraulic telescopic rod (23) is rotatably connected to a movable rod (24), an end of the movable rod (24) away from the hydraulic telescopic rod (23) is fixedly connected to a pin shaft (25), and an outer wall of the pin shaft (25) is rotatably connected to an inner wall of the fixed seat (21); The detection mechanism (3) comprises a rotating frame (31), the inner wall of the rotating frame (31) is fixedly connected to a ventilation pipe (32), one side of the ventilation pipe (32) is fixedly connected to a jet (33), the other side of the ventilation pipe (32) is fixedly connected to a connecting frame (34), the side of the connecting frame (34) away from the ventilation pipe (32) is fixedly connected to a pneumatic push rod (35), the output end of the pneumatic push rod (35) is fixedly connected to an air guide cylinder (36), the top of the air guide cylinder (36) is fixedly connected to an exhaust cylinder (37), the top of the ventilation pipe (32) is fixedly connected to a pressure relief assembly (38), and the inner walls of the ventilation pipe (32) and the air guide cylinder (36) are both fixedly connected to a check assembly (39).

2. A valve sealing test system for high temperature and high pressure power station according to claim 1, characterized in that: The bottom of the fixing seat (21) is fixedly connected to the top of the water reservoir (1), the outer wall of the water reservoir (1) is fixedly connected to the outer wall of the mounting seat (22), and the side of the pin shaft (25) away from the movable rod (24) is fixedly connected to the outer wall of the rotating frame (31).

3. The valve sealing test system for high temperature and high pressure power station according to claim 1, characterized in that: The non-return assembly (39) comprises a fixed ring (391), the inner wall of the fixed ring (391) is fixedly connected to a fixed cylinder (392), the outer wall of the fixed cylinder (392) is slidably connected to a sliding ring (393), the outer wall of the sliding ring (393) is fixedly connected to a compression spring (395), and the outer wall of the fixed ring (391) is fixedly connected to a limiting rod (394).

4. A valve sealing test system for high temperature and high pressure power station according to claim 3, characterized in that: The side of the compression spring (395) away from the sliding ring (393) is fixedly connected to the outer wall of the fixed ring (391), the outer wall of the limit rod (394) is slidably connected to the inner wall of the sliding ring (393), and an air guide hole (396) is opened in the wall of the fixed cylinder (392).

5. The valve sealing test system for high temperature and high pressure power station according to claim 1, characterized in that: The pressure relief assembly (38) comprises a pressure relief pipe (381), the top of the pressure relief pipe (381) is fixedly connected to an alarm assembly (382), the inner wall of the pressure relief pipe (381) is fixedly connected to a porous fixing plate (383), the inner wall of the porous fixing plate (383) is slidably connected to a sliding rod (384), the top of the sliding rod (384) is fixedly connected to a porous piston plate (385), the inner wall of the porous piston plate (385) is plugged with a plunger ring (387), and the bottom of the porous piston plate (385) is fixedly connected to a tension spring (386).

6. A valve sealing test system for high temperature and high pressure power station according to claim 5, characterized in that: The outer wall of the porous piston plate (385) is slidably connected to the inner wall of the pressure relief pipe (381), the inner wall of the pressure relief pipe (381) is fixedly connected to the outer wall of the plunger ring (387), the bottom end of the tension spring (386) is fixedly connected to the top of the porous fixed plate (383), and the bottom of the pressure relief pipe (381) is fixedly connected to the top of the ventilation pipe (32).

7. A valve sealing test system for high temperature and high pressure power station according to claim 5, characterized in that: The alarm component (382) comprises a shell (3821), the inner wall of the shell (3821) is fixedly connected to a metal spring (3823), the inner wall of the shell (3821) is fixedly connected to a limit frame (3822), the inner wall of the limit frame (3822) is rotatably connected to a rotating shaft (3824) via a bearing, the bottom end of the rotating shaft (3824) is fixedly connected to a fan blade (3825), the top end of the rotating shaft (3824) is fixedly connected to an energy storage disk (3826), and the bottom of the energy storage disk (3826) is rotatably connected to a knocking ball (3827).

8. A valve sealing test system for high temperature and high pressure power station according to claim 7, characterized in that: The outer wall of the striking ball (3827) contacts the outer wall of the metal spring (3823), the metal spring (3823) is arranged in a circular array along the central axis of the outer shell (3821), and the bottom of the outer shell (3821) is fixedly connected to the top of the pressure relief pipe (381).

9. A method for using a high-temperature and high-pressure power station valve sealing test system, used to use the high-temperature and high-pressure power station valve sealing test system according to claim 1, characterized in that: The following steps are involved: Step 1: Using the detection mechanism (3) to fix the valve for the high temperature and high pressure power station; Step 2: The driving mechanism (2) drives the detection mechanism (3) to rotate, and the high-temperature and high-pressure power station valve is placed into the water reservoir (1); Step 3: close the valve core, and then use the detection mechanism (3) to detect the sealing performance of the high-temperature and high-pressure power station valve; Step 4: Open the valve core, and then use the detection mechanism (3) to perform a secondary test on the sealing performance of the high-temperature and high-pressure power station valve.

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