An ultrahigh pressure emergency relief valve

Abstract

The application relates to the technical field of valves, in particular to an ultrahigh-pressure emergency relief valve, which comprises a protection piece, a driving piece and a convex ring one. In the application, when the valve body is closed, the inner conical sleeve moves towards the sealing ball, at this time, the driving piece gradually approaches the convex ring one, one movable rod drives the movable ring to move towards the sealing ball, the rotating ring on the movable ring first contacts the sealing ball, so that the valve body is in the closed state in advance, no fluid passes through before the inner conical sleeve contacts the sealing ball, and thus impurity particles are not easy to exist between the annular contact surfaces of the inner conical sleeve and the sealing ball, so that the inner conical sleeve and the sealing ball are in the completely closed state after contacting, fluid leakage is effectively avoided, and the sealing property of the relief valve is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of valves, and particularly relates to an ultrahigh-pressure emergency relief valve. BACKGROUND

[0002] In the field of petrochemical industry, many production links involve ultrahigh-pressure environment. For example, in the synthetic ammonia industry, the reaction pressure in the synthetic tower is usually as high as 15-30 MPa, and in some special organic synthesis reaction processes, the pressure can even break through 100 MPa. In these high-pressure reaction systems, the precise control of pressure and the timely treatment of abnormal pressure are of great importance. Once the pressure is out of control, it may cause the violent decomposition of reactants, generating a large amount of heat and gas, and then leading to overpressure of the reaction container, even explosion, which will cause devastating damage to personnel safety and production facilities. In addition, the high-pressure fluid conveying pipeline may cause the pressure in the pipeline to rise sharply due to local blockage of the pipeline, sudden change of fluid flow, etc. If the pressure cannot be released in time, the pipeline rupture and leakage accident will be inevitable, which will not only cause material loss, but also cause serious pollution to the surrounding environment. The high-pressure fluid experimental field also has strict requirements on the control of ultrahigh-pressure environment. In the experiment of testing the high-pressure performance of materials, in order to simulate the extreme pressure conditions in the deep part of the earth, the experimental equipment needs to raise the pressure to more than 100 MPa, even to 200 MPa. Under such high pressure, any small sealing defect or pressure control failure of the experimental device may lead to experimental failure, and more seriously, may threaten the life safety of the experimental personnel. Moreover, these ultrahigh-pressure experimental equipment is often expensive, and once damaged due to abnormal pressure, will cause huge economic loss.

[0003] Looking at the existing relief valves on the market, for example Figure 1 the relief valve using a sealing ball and an inner conical sleeve to realize switching, when facing ultrahigh-pressure working conditions as high as 210 MPa, has the following defects: when the inner conical sleeve moves towards the sealing ball to make the relief valve slowly in the closed state, since there may be impurity particles in the fluid, the impurity particles may be stuck between the annular contact surface of the inner conical sleeve and the sealing ball when the inner conical sleeve is about to contact the sealing ball, so that the impurity particles hinder the complete closure of the inner conical sleeve and the sealing ball, leading to the possibility of fluid leakage, thereby reducing the sealing performance of the relief valve, and the impurity particles stuck between the annular contact surface of the inner conical sleeve and the sealing ball may damage the annular contact surface, resulting in scratches or pits on the annular contact surface, which further reduces the sealing performance of the relief valve. SUMMARY

[0004] The present application aims at the deficiencies of the prior art, and provides an ultrahigh-pressure emergency relief valve to solve the technical problem of possible leakage of the relief valve in the prior art during use.

[0005] The object of the present application can be achieved by the following technical solutions.

[0006] An ultrahigh pressure emergency relief valve, comprising a by-nines three-way, a by-nines two-way, an upper end cover, an outer cylinder, a lower end cover, a sealing ball, an inner cone sleeve, a mandrel, a piston, a plug one, a plug two and a plug three, the relief valve further comprises:

[0007] A protection piece, the protection piece comprises a movable ring and a rotating ring, a limiting ring is arranged on the periphery of the inner cone sleeve, the movable ring is movably sleeved between the inner cone sleeve and the limiting ring, and the rotating ring is rotatably installed at one end of the movable ring close to the sealing ball;

[0008] A driving piece, a plurality of groups of driving pieces are installed between the movable ring and the inner cone sleeve, the driving piece comprises two movable rods and a tension spring, the two movable rods are hinged together, the movable ends of the two movable rods are respectively hinged to the end of the movable ring and the outer surface of the inner cone sleeve, and the tension spring is installed between the two movable rods;

[0009] A convex ring one, the outer cylinder is provided with an annular convex ring one, when the tension spring is in a normal state, the diameter of the outermost side of the two movable rods is greater than the inner diameter of the convex ring one.

[0010] As a preferred of the above technical solution, the rotating ring is provided with turbine blades on the periphery, and the inner side of the rotating ring is provided with a plurality of groups of cleaning brushes.

[0011] As a preferred of the above technical solution, a plurality of filter holes are formed in the periphery of the rotating ring.

[0012] As a preferred of the above technical solution, the outer cylinder is further provided with an annular convex ring two, the convex ring two is away from the sealing ball, and the convex ring one is located between the sealing ball and the convex ring two.

[0013] As a preferred of the above technical solution, the cleaning brush is elastically installed on the inner wall of the rotating ring, and the cleaning brush always has a tendency to tilt away from the sealing ball.

[0014] As a preferred of the above technical solution, the by-nines two-way is provided with a filter piece.

[0015] As a preferred of the above technical solution, a plurality of groups of springs are installed in the lower end cover, one end of the spring is provided with a steel ball, the periphery of the mandrel is provided with a clamping groove, and the steel ball is clamped in the clamping groove.

[0016] The present application has the following beneficial effects:

[0017] 1. The valve body is closed, the inner cone sleeve moves towards the sealing ball, at this time the driving part gradually approaches the convex ring, one of the movable rods will drive the movable ring to move towards the sealing ball, so that the rotating ring on the movable ring first contacts the sealing ball, so that the valve body can be closed in advance, so that there is no fluid passing through before the inner cone sleeve contacts the sealing ball, so that there is no impurity particles between the annular contact surface of the inner cone sleeve and the sealing ball, so as to ensure that the inner cone sleeve and the sealing ball are in a completely closed state after contacting, effectively avoiding fluid leakage, thereby ensuring the sealing property of the relief valve;

[0018] 2. When the movable ring drives the rotating ring to move towards the sealing ball, the cleaning brushes are brought out by the rotating ring, and the cleaning brushes are inclined and rotated towards the inner side of the inner cone sleeve, the rotating cleaning brushes can clean the inclined surface of the inner cone sleeve and the surface of the sealing ball, and the impurity particles attached thereon can be cleaned down, effectively avoiding the existence of impurity particles between the annular contact surface of the inner cone sleeve and the sealing ball after the inner cone sleeve contacts the sealing ball, thereby ensuring that the inner cone sleeve and the sealing ball are in a completely closed state after contacting, effectively avoiding fluid leakage, and further ensuring the sealing property of the relief valve;

[0019] 3. In the present application, when the inner cone sleeve moves towards the sealing ball, the cleaning brushes are inclined to the inclined surface of the inner cone sleeve, and the cleaning brushes are in a rotating state, so that the inclined surface of the inner cone sleeve can be protected by the cleaning brushes, thereby effectively avoiding the occurrence of scratches and pits on the inclined surface of the inner cone sleeve, further ensuring that the inner cone sleeve and the sealing ball are in a completely closed state after contacting, effectively avoiding fluid leakage, and further ensuring the sealing property of the relief valve;

[0020] 4. In the present application, when the rotating ring contacts the sealing ball, the valve body is closed in advance, the fluid passes through the filter holes, and the impurity particles are filtered out, so that the cleaning brushes, the surface of the sealing ball and the surface of the inner cone sleeve are washed by the fluid, thereby washing away the impurity particles attached to the cleaning brushes, the surface of the sealing ball and the surface of the inner cone sleeve, further effectively avoiding the existence of impurity particles between the annular contact surface of the inner cone sleeve and the sealing ball, further ensuring that the inner cone sleeve and the sealing ball are in a completely closed state after contacting, effectively avoiding fluid leakage, and further ensuring the sealing property of the relief valve;

[0021] 5、The valve body is in the state of discharge, the driving part is located at the convex ring two, the movable ring drives the rotating ring to move to the sealing ball direction at this time, a plurality of cleaning brushes are taken out by the rotating ring and are inclined to the inner side of the inner cone sleeve, and the plurality of cleaning brushes rotate, so that the inclined surface of the inner cone sleeve is protected, the impurity particles in the fluid are prevented from directly contacting the inclined surface of the inner cone sleeve, scratches and pits of the inclined surface of the inner cone sleeve are effectively avoided, the inner cone sleeve and the sealing ball are ensured to be in a completely closed state after contacting, fluid leakage is effectively avoided, and the sealing performance of the discharge valve is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a cross-sectional structure schematic view when the valve body is closed.

[0023] Figure 2 It is a cross-sectional structure schematic view when the valve body is closed.

[0024] Figure 3 It is a driving part, a protection part and an inner cone sleeve connection structure schematic view.

[0025] Figure 4 It is a driving part, a protection part and an inner cone sleeve connection structure schematic view.

[0026] Figure 5 It is a driving part and a protection part structure schematic view.

[0027] Figure 6 It is Figure 5 It is an enlarged structure schematic view of the position C.

[0028] Figure 7 It is Figure 1 It is an enlarged structure schematic view of the position A.

[0029] Figure 8 It is Figure 2 It is an enlarged structure schematic view of the position B.

[0030] In the figure:

[0031] 1, a tee joint; 2, a cross joint; 3, an upper end cover; 4, an outer cylinder; 41, a ball cage; 42, a positioning block; 43, a convex ring one; 44, a convex ring two; 5, a lower end cover; 6, a sealing ball; 7, an inner cone sleeve; 71, a limiting ring; 8, a core shaft; 81, a piston; 9, a spring; 91, a steel ball; 10, a driving part; 101, a movable rod; 102, a tension spring; 11, a protection part; 111, a movable ring; 112, a rotating ring; 1121, a turbine blade; 1122, a cleaning brush; 1123, a filter hole; 113, a connecting plate; 12, a plug one; 13, a plug two; 14, a plug three; 15, a filter part. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0033] As shown in the drawings, an ultrahigh-pressure emergency relief valve comprises a tee 1, a cross 2, an upper end cover 3, an outer cylinder 4, a lower end cover 5, a sealing ball 6, an inner conical sleeve 7, a mandrel 8, a piston 81, a plug 12, a plug 13 and a plug 14, and further comprises: Figures 1-8 A protective member 11, the protective member 11 comprises a movable ring 111 and a rotating ring 112, the inner conical sleeve 7 is provided with a limiting ring 71 on the periphery, the movable ring 111 is movably sleeved between the inner conical sleeve 7 and the limiting ring 71, and the rotating ring 112 is rotatably installed at one end of the movable ring 111 close to the sealing ball 6;

[0034] A driving member 10, a plurality of groups of driving members 10 are installed between the movable ring 111 and the inner conical sleeve 7, the driving member 10 comprises two movable rods 101 and a tension spring 102, the two movable rods 101 are hinged together, the movable ends of the two movable rods 101 are respectively hinged to the end of the movable ring 111 and the outer surface of the inner conical sleeve 7, and the tension spring 102 is installed between the two movable rods 101;

[0035] A convex ring 43, the outer cylinder 4 is provided with an annular convex ring 43, when the tension spring 102 is in a normal state, the outermost diameter of the two movable rods 101 is greater than the inner diameter of the convex ring 43.

[0036]

[0037] ​In one case of the embodiment, the plug one 12 and the plug two 13 are respectively connected with the liquid inlet end and the liquid outlet end of the external hydraulic control box, and the plug three 14 is installed with a pressure sensor, when the pressure in the valve body reaches the rated working pressure, the pressure sensor will feedback the signal to the hydraulic control system, and the hydraulic fluid is injected into the corresponding cavity of the piston 81 through the liquid inlet end of the external hydraulic control box, so that the piston 81 moves, and the piston 81 drives the mandrel 8 and the inner cone sleeve 7 to move away from the sealing ball 6, at this time, the valve body is in the relief state, the fluid enters the inner cone sleeve 7 through the ball cage 41, and then is discharged from the lower end cover 5 through the mandrel 8, so that the emergency relief is realized; when the pressure in the valve body is lower than the rated working pressure, the hydraulic fluid is injected into the other side of the corresponding cavity of the piston 81 through the liquid outlet end of the external hydraulic control box, and the original hydraulic fluid in the cavity returns to the external hydraulic control box through the liquid inlet end of the external hydraulic control box, so that the piston 81 moves in the opposite direction, so that the piston 81 drives the mandrel 8 and the inner cone sleeve 7 to move towards the sealing ball 6, when the inner cone sleeve 7 contacts the sealing ball 6, the valve body is in the closed state; in the application, a balance pipeline can be connected between the plug one 12 and the plug three 14, and a burst disc is arranged in the middle of the balance pipeline, when the pressure in the valve body exceeds the rated working pressure, part of the fluid enters the balance pipeline and breaks the burst disc, and part of the fluid enters the corresponding cavity of the piston 81 through the plug one 12, so as to drive the piston 81 to move, so that the inner cone sleeve 7 moves away from the sealing ball 6, and the valve body is in the relief state, so that the automatic relief is realized, and the opening and closing of the valve body can be flexibly controlled by cooperating with the hydraulic control system, and the reliability of pressure control is ensured;

[0038] In actual application, when the inner cone sleeve 7 moves towards the sealing ball 6, the driving part 10 gradually approaches the convex ring one 43, when the hinged ends of the two movable rods 101 contact the convex ring one 43, the two movable rods 101 will move inward under the extrusion of the convex ring one 43, so that one of the two movable rods 101 drives the movable ring 111 to move towards the sealing ball 6, so that the rotating ring 112 on the movable ring 111 first contacts the sealing ball 6 before the inner cone sleeve 7 contacts the sealing ball 6, so that the valve body can be in the closed state in advance, and the fluid no longer passes through the inner cone sleeve 7, at the same time, the inner cone sleeve 7 is still moving towards the sealing ball 6, when the inner cone sleeve 7 contacts the sealing ball 6, the driving part 10 passes the convex ring one 43, and the movable ring 111 and the rotating ring 112 are reset through the rebounding ability of the tension spring 102, so that the fluid no longer passes through before the inner cone sleeve 7 contacts the sealing ball 6, so that there are no impurity particles between the annular contact surface between the inner cone sleeve 7 and the sealing ball 6, so as to ensure that the inner cone sleeve 7 and the sealing ball 6 are in the completely closed state after contacting, effectively avoiding the fluid leakage, so as to ensure the sealing property of the relief valve.

[0039] Further, the rotating ring 112 is provided with turbine blades 1121 around the rotating ring 112, and the inner side of the rotating ring 112 is provided with a plurality of groups of cleaning brushes 1122.

[0040] In actual application, when the movable ring 111 drives the rotating ring 112 to move towards the sealing ball 6, the groups of cleaning brushes 1122 are brought out by the rotating ring 112. Since the fluid continues to pass before the rotating ring 112 contacts the sealing ball 6, the fluid impacts the turbine blades 1121 to drive the rotating ring 112 to rotate. Moreover, under the scouring of the fluid, the groups of cleaning brushes 1122 incline towards the inner side of the inner cone sleeve 7. Thus, the rotating ring 112 drives the groups of inclined cleaning brushes 1122 to rotate. The rotation of the cleaning brushes 1122 can clean the inclined surface of the inner cone sleeve 7, i.e. the surface of the inner cone sleeve 7 to be contacted with the sealing ball 6, and remove the impurity particles adhered to the inclined surface, thereby effectively avoiding the existence of impurity particles between the inner cone sleeve 7 and the annular contact surface between the sealing ball 6 and the rear inner cone sleeve 7, ensuring that the inner cone sleeve 7 and the sealing ball 6 are in a completely closed state after being contacted, effectively avoiding fluid leakage, and further ensuring the sealing performance of the relief valve.

[0041] Before the rotating ring 112 contacts the sealing ball 6, the rotating ring 112 is still in a rotating state. Thus, when the rotating ring 112 contacts the sealing ball 6, the rotating ring 112 will continue to rotate for a certain angle due to inertia. Thus, the groups of cleaning brushes 1122 can remove the impurity particles adhered to the surface of the sealing ball 6, thereby further effectively avoiding the existence of impurity particles between the inner cone sleeve 7 and the annular contact surface between the sealing ball 6 and the rear inner cone sleeve 7, further ensuring that the inner cone sleeve 7 and the sealing ball 6 are in a completely closed state after being contacted, effectively avoiding fluid leakage, and further ensuring the sealing performance of the relief valve.

[0042] When the inner cone sleeve 7 moves towards the sealing ball 6, the flow passage between the inner cone sleeve 7 and the sealing ball 6 gradually narrows, which causes the speed of the fluid to sharply increase. After the speed of the fluid increases, the force of the impurity particles contained in the fluid impacting the inclined surface of the inner cone sleeve 7 will become larger, which can easily cause scratches or pits on the inclined surface of the inner cone sleeve 7, thereby causing the inner cone sleeve 7 and the sealing ball 6 to be in an incompletely closed state after being contacted. Since the cleaning brushes 1122 incline towards the inclined surface of the inner cone sleeve 7 and the cleaning brushes 1122 are in a rotating state, the groups of cleaning brushes 1122 can protect the inclined surface of the inner cone sleeve 7 from being directly contacted by the impurity particles, thereby effectively avoiding the scratches and pits on the inclined surface of the inner cone sleeve 7, further ensuring that the inner cone sleeve 7 and the sealing ball 6 are in a completely closed state after being contacted, effectively avoiding fluid leakage, and further ensuring the sealing performance of the relief valve.

[0043] Further, a plurality of filter holes 1123 are formed on the periphery of the rotating ring 112.

[0044] In actual application, when the rotating ring 112 contacts the sealing ball 6, the valve body is in the closed state in advance. Since the cleaning brush 1122 may be attached with impurity particles when cleaning the inner conical sleeve 7 and the sealing ball 6, when the inner conical sleeve 7 slowly contacts the sealing ball 6, i.e. during the process of the cleaning brush 1122 being retracted, the impurity particles on the cleaning brush 1122 may fall between the annular contact surface of the inner conical sleeve 7 and the sealing ball 6, which may cause the impurity particles to be stuck between the annular contact surface of the inner conical sleeve 7 and the sealing ball 6 when the inner conical sleeve 7 contacts the sealing ball 6, resulting in the inner conical sleeve 7 and the sealing ball 6 being in the state of incomplete closure after contacting. At this time, the fluid passes through the plurality of filter holes 1123, and the impurity particles are filtered out, so that the fluid washes the surface of the cleaning brush 1122, the sealing ball 6 and the inner conical sleeve 7, thereby washing away the impurity particles attached to the surface of the cleaning brush 1122, the sealing ball 6 and the inner conical sleeve 7, further effectively avoiding the existence of impurity particles between the annular contact surface of the inner conical sleeve 7 and the sealing ball 6, further ensuring that the inner conical sleeve 7 and the sealing ball 6 are in the state of complete closure after contacting, effectively avoiding fluid leakage, and further ensuring the sealing performance of the relief valve.

[0045] Further, the outer cylinder 4 is further provided with an annular convex ring two 44, the convex ring two 44 is away from the sealing ball 6, and the convex ring one 43 is located between the sealing ball 6 and the convex ring two 44.

[0046] In actual application, when the valve body is in the relief state, the driving member 10 is located at the convex ring two 44, at this time, the movable ring 111 also drives the rotating ring 112 to move towards the sealing ball 6, so that a plurality of groups of cleaning brushes 1122 are taken out by the rotating ring 112, and through the washing of the fluid, a plurality of groups of cleaning brushes 1122 are inclined towards the inner side of the inner conical sleeve 7, and at the same time, the rotating ring 112 drives a plurality of groups of inclined cleaning brushes 1122 to rotate, so that a plurality of groups of rotating cleaning brushes 1122 can protect the inclined surface of the inner conical sleeve 7, i.e. when the valve body is in the relief state, the inclined surface of the inner conical sleeve 7 is protected by a plurality of groups of cleaning brushes 1122, so as to avoid the impurity particles in the fluid directly contacting the inclined surface of the inner conical sleeve 7, thereby effectively avoiding scratches and pits on the inclined surface of the inner conical sleeve 7, further ensuring that the inner conical sleeve 7 and the sealing ball 6 are in the state of complete closure after contacting, effectively avoiding fluid leakage, and further ensuring the sealing performance of the relief valve.

[0047] When the inner cone sleeve 7 moves towards the sealing ball 6, the driving part 10 slowly passes the convex ring two 44 and moves towards the convex ring one 43. When the driving part 10 passes the convex ring two 44, the movable ring 111 drives the rotating ring 112 to reset, so that the several groups of cleaning brushes 1122 are retracted. At the same time, the rotating ring 112 is still in a rotating state, so that the cleaning brushes 1122 also rotate. When the cleaning brushes 1122 rotate, the impurities attached to the surface of the cleaning brushes 1122 can be cleaned. When the cleaning brushes 1122 are brought out to contact the inclined surface of the inner cone sleeve 7 or the surface of the sealing ball 6 again, the cleaning brushes 1122 remain clean, so that the cleaning effect of the cleaning brushes 1122 on the inclined surface of the inner cone sleeve 7 and the surface of the sealing ball 6 is ensured, and the inner cone sleeve 7 and the sealing ball 6 are further ensured to be in a completely closed state after contacting, so that fluid leakage is effectively avoided, and the sealing performance of the relief valve is further ensured.

[0048] Further, the cleaning brushes 1122 are elastically installed on the inner wall of the rotating ring 112, and the cleaning brushes 1122 always have a tendency to tilt away from the sealing ball 6.

[0049] In actual application, when the cleaning brushes 1122 are brought out by the rotating ring 112, the cleaning brushes 1122 themselves tilt towards the inclined surface of the inner cone sleeve 7, and further tilt towards the inclined surface of the inner cone sleeve 7 under the assistance of fluid flow, so that the cleaning and protection effects of the several groups of cleaning brushes 1122 are ensured, and the inner cone sleeve 7 and the sealing ball 6 are ensured to be in a completely closed state after contacting, so that fluid leakage is effectively avoided, and the sealing performance of the relief valve is further ensured.

[0050] As shown in Figure 1 and Figure 2 , the filter 15 is installed in the inner end cover 2.

[0051] In actual application, when the fluid flows through the inner end cover 2, the filter 15 filters out the larger impurity particles in the fluid, so that the larger impurity particles do not directly damage the sealing ball 6 and the inner cone sleeve 7, and the inner cone sleeve 7 and the sealing ball 6 are ensured to be in a completely closed state after contacting, so that fluid leakage is effectively avoided, and the sealing performance of the relief valve is ensured.

[0052] As shown in Figure 1 and Figure 2 , the several groups of springs 9 are installed in the lower end cover 5. One end of each spring 9 is provided with a steel ball 91, and the outer periphery of the mandrel 8 is provided with a clamping groove, and the steel ball 91 is clamped in the clamping groove.

[0053] When the valve body is in the closed state, the steel ball 91 on the spring 9 is clamped in the clamping groove of the mandrel 8. With the strong elastic force of the spring 9 and the extrusion force of the hydraulic liquid on the piston 81, the position of the mandrel 8 is fixed, thereby ensuring that the sealing ball 6 and the inner conical sleeve 7 are completely closed, effectively avoiding fluid leakage and ensuring the sealing property of the relief valve.

[0054] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An ultra-high pressure emergency relief valve comprising a tee junction (1), a cross junction (2), an upper end cover (3), an outer cylinder (4), a lower end cover (5), a sealing ball (6), an inner cone sleeve (7), a mandrel (8), a piston (81), a plug one (12), a plug two (13) and a plug three (14), characterized in that, The relief valve further comprises: A shield (11) comprising a movable ring (111) and a rotating ring (112), the inner conical sleeve (7) is peripherally provided with a limiting ring (71), the movable ring (111) is movably sleeved between the inner conical sleeve (7) and the limiting ring (71), and the rotating ring (112) is rotatably installed at one end of the movable ring (111) close to the sealing ball (6); A driving member (10) is installed between the movable ring (111) and the inner conical sleeve (7), the driving member (10) comprises two movable rods (101) and a tension spring (102), the two movable rods (101) are hingedly connected together, the movable ends of the two movable rods (101) are respectively hingedly connected to the end of the movable ring (111) and the outer surface of the inner conical sleeve (7), and the tension spring (102) is installed between the two movable rods (101); A convex ring one (43) is arranged in the outer cylinder (4) in an annular shape, when the tension spring (102) is in a normal state, the outermost diameter of the two movable rods (101) is greater than the inner diameter of the convex ring one (43); The rotating ring (112) is peripherally provided with turbine blades (1121), and the inner side of the rotating ring (112) is provided with a plurality of cleaning brushes (1122); A plurality of filter holes (1123) are formed in the periphery of the rotating ring (112); The outer cylinder (4) is further provided with an annular convex ring two (44), the convex ring two (44) is away from the sealing ball (6), the convex ring one (43) is located between the sealing ball (6) and the convex ring two (44), and when the valve body is in a relief state, the driving member (10) is located at the convex ring two (44); The cleaning brush (1122) is elastically installed on the inner wall of the rotating ring (112), and the cleaning brush (1122) always has a tendency to tilt away from the sealing ball (6).

2. The ultrahigh pressure emergency relief valve of claim 1, wherein, The filter member (15) is installed in the inner part of the nonane two-way pipe (2).

3. The ultrahigh pressure emergency relief valve of claim 1, wherein, A plurality of springs (9) are installed in the lower end cover (5), one end of the spring (9) is provided with a steel ball (91), the outer periphery of the core shaft (8) is provided with a clamping groove, and the steel ball (91) is clamped in the clamping groove.

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