Nuclear power explosion valve

Abstract

The invention relates to the technical field of nuclear power, and discloses a nuclear power explosion valve which is characterized in that a valve rod is in transmission connection with a transmission structure, and a valve is connected with the valve rod, so that the transmission structure can drive the valve to switch between a pressure relief state and a closed state through the valve rod, and opening or closing of a pressure relief channel is realized. The nuclear power explosion valve of the structure can quickly respond to system pressure changes, when the system pressure exceeds a safety threshold value, the valve can be quickly opened, overpressure media are effectively released through the pressure relief channel, the system is protected against damage, and safe operation of key facilities such as a nuclear power station is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power, and in particular to a nuclear power bursting valve. Background Art

[0002] The nuclear power bursting valve is a unique equipment of the third-generation passive nuclear power plant. Due to its characteristics of no leakage, high pressure resistance, and corrosion resistance, it can ensure zero nuclear leakage on the nuclear power bursting valve body, and can therefore be reliably used in the main circuit to assume the primary system pressure boundary function.

[0003] In the related technology, the nuclear power bursting valve is an integrated structure, and the main parts include valve body, valve cover, tension bolts, piston, shear cover, and cartridge drive device. Once a nuclear power plant encounters an accident, the combustion of explosives in the bursting valve detonator generates high-pressure gas to push the piston downward. After breaking the tension bolts, the piston moves downward to hit the shear cover, and then breaks the shear cover, quickly connecting the valve inlet and outlet, achieving emergency pressure relief of the system and effective cooling of the core, thereby ensuring safety.

[0004] However, after the integrated bursting valve is actuated, the tension bolts and shear covers are physically damaged, and the bursting valve needs to be disassembled as a whole and the damaged components need to be replaced in a timely manner to meet the requirements of the next use, which will increase the operation and maintenance costs and difficulty. Summary of the invention

[0005] In view of this, the present invention provides a nuclear power bursting valve to solve the problem that the damaged components of the existing nuclear power bursting valve need to be replaced after the valve is opened, resulting in high operation and maintenance costs and difficulties.

[0006] Specifically, the present invention provides a nuclear power explosion valve, including a valve structure. The valve structure includes a valve seat, a valve and a valve stem, wherein a pressure relief channel is provided inside the valve seat, and the valve is installed in the pressure relief channel. The valve has a pressure relief state in which the pressure relief channel is opened and a closed state in which the pressure relief channel is closed. One end of the valve stem along its axis is connected to the valve, and the other end of the valve stem along its axis is in transmission connection with a transmission structure. Under the action of the transmission structure, the valve stem drives the valve to switch between the pressure relief state and the closed state.

[0007] Beneficial effects: By connecting the valve stem to the transmission structure, since the valve is connected to the valve stem, the transmission structure can drive the valve to switch between the pressure relief state and the closed state through the valve stem, thereby realizing the opening or closing of the pressure relief channel. With such a configuration, the nuclear power bursting valve of this structure can quickly respond to changes in system pressure. When the system pressure exceeds the safety threshold, the valve can be opened quickly, and the overpressure medium can be effectively released through the pressure relief channel to protect the system from damage and ensure the safe operation of key facilities such as nuclear power plants. At the same time, after the valve is actuated, the valve can be reset by controlling the transmission structure, thereby avoiding overall replacement, making the structure of the nuclear power bursting valve more reliable. In addition, since the valve stem connects the valve to the transmission structure, the valve can be opened and closed by a remote or automated transmission structure, making the valve opening and closing more convenient.

[0008] In an optional embodiment, the nuclear power burst valve also includes a combustion chamber; the transmission structure includes a piston and a push rod, the piston is located in the combustion chamber, one end of the push rod along its axis is fixedly connected to the piston, and the other end of the push rod along its axis is transmission-connected to the other end of the valve stem along its axis.

[0009] Beneficial effects: By adding a combustion chamber and setting the piston in the transmission structure in the combustion chamber, the piston can be quickly pushed to move during the combustion process. At this time, since the two ends of the push rod along its axis are respectively fixedly connected to the piston and connected to the valve stem, the energy generated by the combustion in the combustion chamber can be directly converted into the mechanical energy of the push rod, thereby driving the valve to open. That is, when the system detects overpressure or requires emergency pressure relief, the fuel in the combustion chamber burns rapidly, generating high-pressure gas to push the piston, and then the valve is quickly opened through the push rod and the valve stem to achieve pressure relief. Such a setting greatly shortens the response time, improves the pressure relief efficiency, and helps prevent the system from being damaged due to excessive pressure. At the same time, the power is transmitted to the valve stem through the piston and the push rod, overcoming the problem of insufficient power or delay that may exist in the traditional drive method, and improving the reliability and stability of the valve. In addition, since the ignition and fuel supply of the combustion chamber can be achieved through a remote control system, the nuclear power burst valve can be easily integrated into the automation control system of the nuclear power plant, so that the operator can monitor and control the opening and closing of the valve in a safe position away from the dangerous area, thereby improving the safety of operation.

[0010] In an optional embodiment, the transmission structure includes a crankshaft, which includes a connecting rod journal and an output shaft end, the connecting rod journal is transmission-connected to the other end of the push rod along its axis, and the output shaft end is transmission-connected to the other end of the valve stem along its axis.

[0011] Beneficial effects: By adding a crankshaft, the crankshaft, as the core component of the transmission structure, can efficiently convert the force or motion transmitted by the push rod into the rotational motion of the valve stem through the connecting rod journal and the output shaft end, thereby reducing energy loss, improving mechanical efficiency, and ensuring that the valve can respond to control signals quickly and accurately. At the same time, the crankshaft can smoothly transmit force and motion through its continuous rotational motion, reduce the impact and vibration generated during the transmission process, and reduce the unstable factors that cause failures, thereby reducing the risk of system shutdown or accidents caused by transmission failures, and improving the reliability and safety of the entire nuclear power system.

[0012] In an optional embodiment, the transmission structure further comprises a sleeve, which is rotatably sleeved on the connecting rod journal, and the sleeve is installed at the other end of the push rod along its axis.

[0013] Beneficial effect: Since the sleeve is installed at the other end of the push rod along its axis, and the sleeve is rotatably sleeved on the connecting rod journal, the sleeve, as an intermediate link in the transmission process, can distribute and transmit force more evenly, reduce energy loss in the transmission process, improve the transmission efficiency from the push rod to the valve stem, and ensure that the valve can respond to control signals more quickly and accurately.

[0014] In an optional embodiment, the transmission structure is provided with multiple groups, and the multiple crankshafts are connected in the axial direction.

[0015] Beneficial effects: By providing multiple sets of transmission structures and connecting multiple crankshafts in the axial direction, even if one or several crankshafts fail, the remaining crankshafts can still continue to work and maintain the normal opening and closing of the valve, thereby improving the reliability of the nuclear power burst valve. At the same time, multiple crankshafts working at the same time can speed up the transmission speed, improve the response speed of the valve, help to quickly respond to system pressure changes, and protect the safety of the system. In addition, when a crankshaft fails, it can be replaced or repaired separately without the need for overall replacement, which reduces maintenance costs and time and improves the maintainability and availability of the equipment.

[0016] In an optional embodiment, the nuclear power burst valve also includes an ignition component, a fixed end of which is installed in the combustion chamber, an ignition end of which is located in the combustion chamber, and an electrical connection end of the ignition component is electrically connected to a control terminal via a wire to receive an ignition signal transmitted by the control terminal.

[0017] Beneficial effects: By adding an ignition piece, since the fixed end of the ignition piece is installed in the combustion chamber, the ignition end of the ignition piece is located in the combustion chamber, and the electrical connection end of the ignition piece is electrically connected to the control terminal through a wire, the operator can send an ignition signal through the control terminal in a safe position away from the nuclear power bursting valve to achieve remote detonation, reducing the risk of human error. At the same time, real-time monitoring of the status of the ignition piece through the control terminal helps to promptly discover and deal with previous problems and improve the reliability of the nuclear power bursting valve. In addition, the setting of the ignition piece and the way of controlling the ignition enable the nuclear power bursting valve to be opened or closed quickly and reliably in an emergency, thereby effectively releasing or isolating the pressure and ensuring the safety of the nuclear power plant.

[0018] In an optional embodiment, the nuclear power bursting valve also includes a braking structure, which includes a accommodating chamber opened on the piston, an elastic member installed in the accommodating chamber, a braking member connected to the elastic member, and a braking chamber opened in the combustion chamber, wherein, when the combustibles in the combustion chamber are not ignited, the braking chamber is separated from the accommodating chamber, the braking member acts on the elastic member, and the braking member and the elastic member are located in the accommodating chamber, and the elastic member stores energy; when the combustibles in the combustion chamber are ignited, the piston moves horizontally until the braking chamber is connected to the accommodating chamber, the elastic member releases energy and resets, and the elastic member drives the braking member to move toward the braking chamber.

[0019] Beneficial effect: Through the cooperation of the elastic member and the brake member, when the combustibles in the combustion chamber are not ignited, the brake member and the elastic member are located in the accommodating chamber, and the elastic member is in a pre-tightened state. When explosive pressure is generated in the combustion chamber, the piston moves rapidly and stably until the brake chamber is connected to the accommodating chamber, and the elastic member quickly releases energy and resets, driving the brake member to quickly enter the brake chamber, thereby effectively braking the movement of the piston and enhancing the braking effect on the piston. At the same time, through the setting of the brake structure, even if the pressure in the combustion chamber increases abnormally, the brake structure can quickly brake the movement of the piston to prevent the valve from being over-opened or closed, thereby protecting the nuclear power plant from damage and enhancing the stability of the valve.

[0020] In an optional embodiment, the nuclear power burst valve further includes a reset structure, and the reset structure acts on the brake member so that the brake member acts on the elastic member.

[0021] Beneficial effects: By adding a reset structure, it is ensured that the brake can return to the containing chamber accurately and quickly after completing the task, ensuring that the nuclear power burst valve can work again. At the same time, the setting of the reset structure can reduce the position deviation of the brake, thereby reducing the wear on the elastic part, helping to extend the service life of the elastic part and reducing the risk of equipment failure caused by the failure of the elastic part.

[0022] In an optional embodiment, the combustion chamber includes a fuel ignition chamber and a fuel discharge chamber, the inner wall of the fuel ignition chamber is provided with a fuel discharge inlet, the inner wall of the fuel discharge chamber is provided with a fuel discharge outlet, the fuel discharge inlet is connected with the fuel discharge outlet through a fuel discharge channel, wherein, when the combustible material is not ignited, the end of the piston blocks the fuel discharge inlet, the fuel ignition chamber and the fuel discharge chamber are separated by the piston, and when the combustible material is ignited, the piston moves horizontally until the piston brakes, and the fuel ignition chamber and the fuel discharge chamber are connected.

[0023] Beneficial effects: By setting the combustion chamber as a combination of a fuel ignition chamber and a fuel discharge chamber, a fuel discharge inlet is provided on the inner wall of the fuel ignition chamber, and a fuel discharge outlet is provided on the inner wall of the fuel discharge chamber. Since the fuel discharge inlet is connected to the fuel discharge outlet through the fuel discharge channel, the connection and separation of the fuel ignition chamber and the fuel discharge chamber are controlled by the movement of the piston, so that the flow and combustion of the combustible can be precisely controlled. For example, when the combustible is not ignited, the end of the piston blocks the fuel discharge inlet to ensure that the fuel ignition chamber and the fuel discharge chamber are completely separated, and the combustible is prevented from accidentally discharging without control, thereby improving the safety of the nuclear power bursting valve; for another example, when the combustible is ignited, the piston moves horizontally until the piston brakes, and the two chambers are connected, so that the fuel can be burned and depressurized in a predetermined manner and time, avoiding excessive pressure in the fuel ignition chamber, thereby optimizing the piston stress, thereby extending the service life of the piston and improving the overall performance and reliability of the nuclear power bursting valve.

[0024] In an optional embodiment, the nuclear power explosion valve further includes a fuel supply interface, and the fuel supply interface is connected to the combustion chamber.

[0025] Beneficial effects: By adding a refueling interface connected to the combustion chamber, during the operation of the nuclear power burst valve, if the fuel is insufficient or the fuel type needs to be changed, it can be easily refueled through the refueling interface without the need for complex disassembly or modification of the entire valve. At the same time, the refueling interface can be used as an entrance for fuel management and monitoring. Through this interface, the type, quality, flow rate and other parameters of the fuel can be easily detected, thereby achieving real-time monitoring and management of the fuel usage, which helps to promptly discover and solve problems that arise during the use of fuel and ensure the safe and stable operation of the nuclear power burst valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A cross-sectional schematic diagram of a nuclear power explosion valve provided by an embodiment of the present invention;

[0028] Figure 2 A partially enlarged schematic diagram of a nuclear power explosion valve provided by an embodiment of the present invention when the piston is blocked in an initial state;

[0029] Figure 3 A partially enlarged schematic diagram of a nuclear power bursting valve provided in an embodiment of the present invention when the piston is blocked and in a braking state.

[0030] Description of reference numerals:

[0031] 1. Valve seat; 2. Valve; 3. Valve stem; 4. Pressure relief channel; 5. Combustion chamber; 51. Fuel ignition chamber; 52. Fuel discharge chamber; 53. Fuel discharge inlet; 54. Fuel discharge outlet; 55. Fuel discharge channel; 6. Piston; 7. Push rod; 8. Crankshaft; 9. Ignition member; 10. Accommodating chamber; 11. Elastic member; 12. Braking member; 13. Braking chamber; 14. Support seat; 15. Mounting seat; 16. Locking member. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the related technology, the nuclear power bursting valve is an integrated structure, and the main parts include valve body, valve cover, tension bolts, piston, shear cover, and cartridge drive device. Once a nuclear power plant encounters an accident, the combustion of explosives in the bursting valve detonator generates high-pressure gas to push the piston downward. After breaking the tension bolts, the piston moves downward to hit the shear cover, and then breaks the shear cover, quickly connecting the valve inlet and outlet, achieving emergency pressure relief of the system and effective cooling of the core, thereby ensuring safety.

[0037] However, since the tension bolts need to be destroyed and the shear covers need to be broken during pressure relief, the entire valve needs to be disassembled and the damaged components need to be replaced in a timely manner after the bursting valve completes the pressure relief action. This not only increases the operating cost of the nuclear power plant, but also puts higher requirements on the operation and maintenance work.

[0038] To this end, the present application adds a transmission structure to make the structure of the nuclear power burst valve more reliable. After the transmission structure drives the valve to open and close, the valve state can be reset in time, reducing the number of valve replacements and making the valve opening and closing process more reliable.

[0039] Combine the following Figures 1 to 3 , describing an embodiment of the present invention.

[0040] According to an embodiment of the present invention, a nuclear power burst valve is provided, including a valve structure.

[0041] Specifically, if Figure 1 As shown, the valve structure includes a valve seat 1, a valve 2 and a valve stem 3. A pressure relief channel 4 is provided inside the valve seat 1. The valve 2 is installed in the pressure relief channel 4. The valve 2 has a pressure relief state in which the pressure relief channel 4 is opened and a closed state in which the pressure relief channel 4 is closed. One end of the valve stem 3 along its axis is connected to the valve 2, and the other end of the valve stem 3 along its axis is transmission-connected to a transmission structure. Under the action of the transmission structure, the valve stem 3 drives the valve 2 to switch between the pressure relief state and the closed state.

[0042] In this arrangement, by connecting the valve stem 3 to the transmission structure, since the valve 2 is connected to the valve stem 3, the transmission structure can drive the valve 2 to switch between the pressure relief state and the closed state through the valve stem 3, thereby realizing the opening or closing of the pressure relief channel 4. In this arrangement, the nuclear power bursting valve of this structure can quickly respond to changes in system pressure. When the system pressure exceeds the safety threshold, the valve 2 can be opened quickly to effectively release the overpressure medium through the pressure relief channel 4, thereby protecting the system from damage and ensuring the safe operation of key facilities such as nuclear power plants.

[0043] At the same time, after the valve 2 is actuated, the valve 2 can be reset by controlling the transmission structure, thereby avoiding overall replacement, making the structure of the nuclear power burst valve more reliable.

[0044] In addition, since the valve stem 3 connects the valve 2 to the transmission structure, the valve 2 can be opened and closed by the remote or automated transmission structure, making the opening and closing of the valve 2 more convenient.

[0045] It can be explained that, in this embodiment, the valve structure is preferably a universal valve structure, and its structure will not be described in detail here.

[0046] In one embodiment, Figures 1 to 3 As shown, the nuclear power explosion valve also includes a combustion chamber 5; the transmission structure includes a piston 6 and a push rod 7, the piston 6 is located in the combustion chamber 5, one end of the push rod 7 along its axis is fixedly connected to the piston 6, and the other end of the push rod 7 along its axis is transmission-connected to the other end of the valve stem 3 along its axis.

[0047] In this arrangement, by adding a combustion chamber 5 and arranging the piston 6 in the transmission structure in the combustion chamber 5, the piston 6 can be quickly pushed to move during the combustion process. At this time, since the two ends of the push rod 7 along its axis are respectively fixedly connected to the piston 6 and transmission-connected to the valve stem 3, the energy generated by the combustion in the combustion chamber 5 can be directly converted into the mechanical energy of the push rod 7, thereby driving the valve 2 to open. That is, when the system detects overpressure or requires emergency pressure relief, the fuel in the combustion chamber 5 burns rapidly, generating high-pressure gas to push the piston 6, and then quickly opens the valve 2 through the push rod 7 and the valve stem 3 to achieve pressure relief. This arrangement greatly shortens the response time, improves the pressure relief efficiency, and helps prevent the system from being damaged due to excessive pressure.

[0048] At the same time, the power is transmitted to the valve stem 3 through the piston 6 and the push rod 7, thereby overcoming the power shortage or delay problems that may exist in the traditional driving method and improving the reliability and stability of the valve 2.

[0049] In addition, since the ignition and fuel supply of the combustion chamber 5 can be achieved through a remote control system, the nuclear power bursting valve can be easily integrated into the automation control system of the nuclear power plant, so that the operator can monitor and control the opening and closing of the valve 2 in a safe location away from the dangerous area, thereby improving the safety of operation.

[0050] It can be explained that the nuclear power explosion valve also includes a mounting seat 15, which is located outside the valve seat 1, and a certain distance is left between the mounting seat 15 and the valve seat 1. At this time, the transmission structure, the ignition part 9, the braking structure, and the reset structure are all installed in the mounting seat 15.

[0051] That is, the combustion chamber 5 , the piston 6 , the push rod 7 , the crankshaft 8 , the ignition component 9 , the accommodating chamber 10 , the elastic component 11 , the braking component 12 , the braking chamber 13 , and the movable area are all integrated on the mounting seat 15 .

[0052] In one embodiment, Figure 1 As shown, the nuclear power explosion valve further includes a support seat 14 , which is arranged between the mounting seat 15 and the valve seat 1 along the axial direction of the valve stem 3 .

[0053] In this arrangement, the support seat 14 is used to support the mounting seat 15 and to provide physical protection for the valve stem 3, thereby making the transmission process more reliable.

[0054] Furthermore, the connection between the support seat 14 and the valve seat 1 is a disassembly connection.

[0055] For example, the contact end surfaces of the valve seat 1 and the support seat 14 are each provided with a connecting flange, and the two connecting flanges are fixed by using connecting bolts.

[0056] Furthermore, a sealing gasket is provided between the two connecting flanges to improve the air tightness inside the valve seat 1 and to allow the system pressure to be released through the pressure relief channel 4 during emergency pressure relief.

[0057] In one embodiment, Figure 1 As shown, the transmission structure includes a crankshaft 8, and the crankshaft 8 includes a connecting rod journal and an output shaft end.

[0058] The connecting rod journal is drivingly connected to the other end of the push rod 7 along its axis.

[0059] It can be explained that there is no specific limitation on the connection method between the output shaft end and the other end of the valve stem 3 along its axis.

[0060] Preferably, the output shaft end is drivingly connected to the other end of the valve stem 3 along the axis thereof.

[0061] By adding the crankshaft 8, the crankshaft 8, as the core component of the transmission structure, can efficiently convert the force or movement transmitted from the push rod 7 into the rotational movement of the valve stem 3 through the connecting rod journal and the output shaft end, thereby reducing energy loss, improving mechanical efficiency, and ensuring that the valve 2 can respond to the control signal quickly and accurately.

[0062] At the same time, the crankshaft 8 can smoothly transmit force and motion through its continuous rotational motion, reduce the impact and vibration generated during the transmission process, reduce the unstable factors that cause failures, thereby reducing the risk of system shutdown or accidents caused by transmission failures, and improving the reliability and safety of the entire nuclear power system.

[0063] In one embodiment, the transmission structure further comprises a sleeve, which is rotatably sleeved on the connecting rod journal, and the sleeve is installed at the other end of the push rod 7 along the axis thereof.

[0064] In this arrangement, since the sleeve is installed at the other end of the push rod 7 along its axis, and the sleeve is rotatably sleeved on the connecting rod journal, the sleeve, as an intermediate link in the transmission process, can distribute and transmit force more evenly, reduce energy loss in the transmission process, improve the transmission efficiency from the push rod 7 to the valve stem 3, and ensure that the valve 2 can respond to the control signal more quickly and accurately.

[0065] It should be noted that the push rod 7 will swing synchronously during the rotation of the crankshaft 8. Therefore, a fan-shaped active area is added, and the part of the push rod 7 outside the combustion chamber 5 is arranged in the active area.

[0066] Furthermore, the activity area can be in a closed state or connected to the outside world.

[0067] In one embodiment, Figure 1 As shown, the transmission structure is provided with multiple groups, and multiple crankshafts 8 are connected in the axial direction.

[0068] By configuring in this way, by providing multiple sets of transmission structures and connecting multiple crankshafts 8 in the axial direction, even if one or several crankshafts 8 fail, the remaining crankshafts 8 can still continue to work and maintain the normal opening and closing of the valve 2, thereby improving the reliability of the nuclear power bursting valve.

[0069] At the same time, multiple crankshafts 8 working simultaneously can speed up the transmission speed, improve the response speed of the valve 2, help to quickly respond to system pressure changes, and protect system safety.

[0070] In addition, when a crankshaft 8 fails, it can be replaced or repaired individually without replacing the entire crankshaft, thereby reducing maintenance costs and time and improving the maintainability and availability of the equipment.

[0071] It can be explained that there is no specific limitation on the connection method between the crankshafts 8. It can be an integrated structure or a detachable connection structure.

[0072] Preferably, two adjacent crankshafts 8 are detachably connected.

[0073] As one of the embodiments, a threaded protrusion with an external thread and a threaded groove with an internal thread are respectively provided at the two ends of the crankshaft 8 along its axial direction. During installation, the threaded protrusion is screwed into the threaded groove and tightened, and during disassembly, the threaded protrusion is screwed out of the threaded groove interface.

[0074] Of course, as another optional implementation, a prismatic protrusion and a prismatic groove are respectively provided at the two ends of the crankshaft 8 along its axial direction, and during installation, only the prismatic protrusion needs to be placed in the prismatic groove.

[0075] It should be noted that after installation, in order to avoid the misalignment of two adjacent crankshafts 8 along the axial direction, the external ends of the multiple crankshafts 8 need to be locked, that is, an internal thread is provided at the end of the crankshaft 8 away from the valve stem 3 along the axial direction, and a locking piece 16 such as a locking nut is used to lock it, so that each crankshaft 8 is limited in its axial direction.

[0076] In one embodiment, Figure 1 As shown, the nuclear power bursting valve also includes an ignition member 9, a fixed end of which is installed in the combustion chamber 5, an ignition end of which is located in the combustion chamber 5, and an electrical connection end of the ignition member 9 is electrically connected to the control terminal through a wire to receive an ignition signal transmitted by the control terminal.

[0077] In this arrangement, by adding an ignition component 9, since the fixed end of the ignition component 9 is installed in the combustion chamber 5, the ignition end of the ignition component 9 is located in the combustion chamber 5, and the electrical connection end of the ignition component 9 is electrically connected to the control terminal through a wire, the operator can be in a safe position away from the nuclear power blasting valve, and the ignition signal is sent by the control terminal to achieve remote detonation, thereby reducing the risk of human error.

[0078] At the same time, real-time monitoring of the status of the ignition component 9 through the control terminal helps to promptly discover and deal with existing problems and improve the reliability of the nuclear power burst valve.

[0079] In addition, the arrangement of the ignition member 9 and the method of controlling the ignition enable the nuclear power burst valve to be opened or closed quickly and reliably in an emergency, thereby effectively releasing or isolating the pressure and ensuring the safety of the nuclear power plant.

[0080] When in use, the control terminal generates an ignition signal and transmits it to the ignition component 9. When the ignition component 9 receives the ignition signal, the ignition terminal ignites to complete the ignition of the combustibles in the combustion chamber 5.

[0081] In one embodiment, Figures 1 to 3 As shown, the nuclear power bursting valve also includes a braking structure, which includes a accommodating chamber 10 opened on the piston 6, an elastic member 11 installed in the accommodating chamber 10, a braking member 12 connected to the elastic member 11, and a braking chamber 13 opened in the combustion chamber 5, wherein, when the combustibles in the combustion chamber 5 are not ignited, the braking chamber 13 is separated from the accommodating chamber 10, the braking member 12 acts on the elastic member 11, and the braking member 12 and the elastic member 11 are located in the accommodating chamber 10, and the elastic member 11 stores energy; when the combustibles in the combustion chamber 5 are ignited, the piston 6 moves horizontally until the braking chamber 13 is connected with the accommodating chamber 10, the elastic member 11 releases energy and resets, and the elastic member 11 drives the braking member 12 to move toward the braking chamber 13.

[0082] With such an arrangement, through the cooperation of the elastic member 11 and the brake member 12, when the combustible material in the combustion chamber 5 is not ignited, the brake member 12 and the elastic member 11 are located in the accommodating chamber 10, and the elastic member 11 is in a pre-tightened state. When explosive pressure is generated in the combustion chamber 5, the piston 6 moves rapidly and stably until the brake chamber 13 is connected to the accommodating chamber 10, at which time the elastic member 11 quickly releases energy and resets, driving the brake member 12 to quickly enter the brake chamber 13, thereby effectively braking the movement of the piston 6 and enhancing the braking effect on the piston 6.

[0083] At the same time, through the setting of the braking structure, even if the pressure in the combustion chamber 5 increases abnormally, the braking structure can quickly brake the movement of the piston 6 to prevent the valve 2 from being excessively opened or closed, thereby protecting the nuclear power plant from damage and enhancing the stability of the valve 2.

[0084] Preferably, the elastic member 11 is a spring, and the braking member 12 is a pin.

[0085] It should be noted that the brake structure can adjust the preset position of the brake chamber 13 according to actual needs, so as to control the final opening of the valve.

[0086] For example, in actual use, there are at least two groups of preset positions, corresponding to at least two different opening conditions of the valve 2. At this time, each preset position corresponds to a brake member 12 and a brake chamber 13. In the process of adjusting the opening of the valve 2, when encountering an unrequired preset position, a limit member such as a top screw is used on the outside to prevent the brake member 12 corresponding to the unrequired preset position from popping out until the opening of the valve 2 meets the requirements.

[0087] Furthermore, during actual use, multiple fuel discharge outlets 54 can be provided according to actual needs, and a fuel discharge outlet 54 is provided between two adjacent brake chambers 13. At this time, different fuel discharge outlets 54 are arranged at intervals, and multiple fuel discharge outlets 54 are all connected to the fuel discharge inlet.

[0088] In one embodiment, the nuclear power bursting valve further includes a reset structure, which acts on the brake member 12 so that the brake member 12 acts on the elastic member 11 to complete the pressing work on the elastic member 11 .

[0089] Such arrangement, by adding a reset structure, ensures that the brake member 12 can accurately and quickly return to the accommodating chamber 10 after completing the task, ensuring that the nuclear power bursting valve can work again.

[0090] At the same time, the setting of the reset structure can reduce the position deviation of the brake member 12, thereby reducing the wear on the elastic member 11, helping to extend the service life of the elastic member 11, and reducing the risk of equipment failure due to failure of the elastic member 11.

[0091] It can be explained that the reset structure is preferably a button, in which case one end of the button is located outside the mounting seat 15 , and the other end extends into the mounting seat 15 and toward the brake chamber 13 .

[0092] At the same time, a fuel discharge interface connected to the combustion chamber is added. When resetting, the operator directly presses the button to make all the brake pins located in the accommodating chamber 10, and gradually extracts the gas in the combustion chamber 5 at the fuel discharge interface, that is, the fuel and gas mixture after the previous combustion is discharged, and the pressure in the combustion chamber 5 is reduced, so that the piston 6 can be moved to the initial position to complete the reset.

[0093] In one embodiment, Figures 1 to 3 As shown, the combustion chamber 5 includes a fuel ignition chamber 51 and a fuel discharge chamber 52. The inner wall of the fuel ignition chamber 51 is provided with a fuel discharge inlet 53, and the inner wall of the fuel discharge chamber 52 is provided with a fuel discharge outlet 54. The fuel discharge inlet 53 is connected with the fuel discharge outlet 54 through a fuel discharge channel 55. When the combustible material is not ignited, the end of the piston 6 blocks the fuel discharge inlet 53, and the fuel ignition chamber 51 and the fuel discharge chamber 52 are separated by the piston 6. When the combustible material is ignited, the piston 6 moves in the horizontal direction until the piston 6 brakes, and the fuel ignition chamber 51 and the fuel discharge chamber 52 are connected.

[0094] In this way, by configuring the combustion chamber 5 as a combination of a fuel ignition chamber 51 and a fuel discharge chamber 52, a fuel discharge inlet 53 is provided on the inner wall of the fuel ignition chamber 51, and a fuel discharge outlet 54 is provided on the inner wall of the fuel discharge chamber 52. Since the fuel discharge inlet 53 is connected with the fuel discharge outlet 54 through the fuel discharge channel 55, the connection and separation of the fuel ignition chamber 51 and the fuel discharge chamber 52 are controlled by the movement of the piston 6, thereby achieving precise control of the flow and combustion of combustibles.

[0095] For example, when the combustibles are not ignited, the end of the piston 6 blocks the fuel discharge inlet 53, ensuring that the fuel ignition chamber 51 and the fuel discharge chamber 52 are completely separated, preventing the combustibles from accidentally discharging without control, thereby improving the safety of the nuclear power burst valve.

[0096] For another example, when igniting combustible materials, the piston 6 moves horizontally until the piston 6 brakes, and the two chambers are connected, so that the fuel can burn and release pressure in a predetermined manner and time, avoiding excessive pressure in the fuel ignition chamber 51, and then optimizing the stress condition of the piston 6, thereby extending the service life of the piston 6 and improving the overall performance and reliability of the nuclear power burst valve.

[0097] In one embodiment, the nuclear power explosion valve further includes a fuel supply interface, which is connected to the combustion chamber 5.

[0098] In this arrangement, by adding a fuel supply interface connected to the combustion chamber 5, during the operation of the nuclear power burst valve, if the fuel is insufficient or the fuel type needs to be changed, it can be conveniently replenished through the fuel supply interface without the need for complicated disassembly or modification of the entire valve 2.

[0099] At the same time, the refueling interface can be used as an entry point for fuel management and monitoring. Through this interface, the type, quality, flow rate and other parameters of the fuel can be easily detected, thereby realizing real-time monitoring and management of fuel usage, which helps to promptly discover and solve problems that arise during fuel use and ensure the safe and stable operation of nuclear power burst valves.

[0100] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A nuclear power burst valve, characterized in that: include: A valve structure, the valve structure comprising a valve seat (1), a valve (2) and a valve stem (3); a pressure relief channel (4) is provided inside the valve seat (1); the valve (2) is installed in the pressure relief channel (4); the valve (2) has a pressure relief state in which the pressure relief channel (4) is opened and a closed state in which the pressure relief channel (4) is closed; one end of the valve stem (3) along its axis is connected to the valve (2); the other end of the valve stem (3) along its axis is in transmission connection with a transmission structure; under the action of the transmission structure, the valve stem (3) drives the valve (2) to switch between the pressure relief state and the closed state.

2. The nuclear power burst valve according to claim 1, characterized in that: The nuclear power explosion valve also includes a combustion chamber (5); The transmission structure comprises a piston (6) and a push rod (7), wherein the piston (6) is located in a combustion chamber (5), one end of the push rod (7) along its axis is fixedly connected to the piston (6), and the other end of the push rod (7) along its axis is transmission-connected to the other end of the valve stem (3) along its axis.

3. The nuclear power burst valve according to claim 2, characterized in that: The transmission structure comprises: A crankshaft (8), the crankshaft (8) comprising a connecting rod journal and an output shaft end, the connecting rod journal being transmission-connected to the other end of the push rod (7) along its axis, and the output shaft end being transmission-connected to the other end of the valve stem (3) along its axis.

4. The nuclear power bursting valve according to claim 3, characterized in that: The transmission structure also includes: A sleeve is rotatably sleeved on the connecting rod journal, and the sleeve is installed on the other end of the push rod (7) along its axis.

5. The nuclear power bursting valve according to claim 3 or 4, characterized in that: The transmission structure is provided with a plurality of groups, and the plurality of crankshafts (8) are connected in the axial direction.

6. The nuclear power bursting valve according to any one of claims 2 to 4, characterized in that: The nuclear power explosion valve also includes: An ignition member (9), wherein a fixed end of the ignition member (9) is mounted on the combustion chamber (5), an ignition end of the ignition member (9) is located in the combustion chamber (5), and an electrical connection end of the ignition member (9) is electrically connected to a control terminal via a wire for receiving an ignition signal transmitted by the control terminal.

7. The nuclear power bursting valve according to any one of claims 2 to 4, characterized in that: The nuclear power explosion valve also includes: A braking structure, the braking structure comprising a accommodating chamber (10) provided on the piston (6), an elastic member (11) installed in the accommodating chamber (10), a braking member (12) connected to the elastic member (11), and a braking chamber (13) provided in the combustion chamber (5), wherein, when the combustible material in the combustion chamber (5) is not ignited, the braking chamber (13) is separated from the accommodating chamber (10), the braking member (12) acts on the elastic member (11), and the braking member (12) and the elastic member (11) are located in the accommodating chamber (10), and the elastic member (11) stores energy; when the combustible material in the combustion chamber (5) is ignited, the piston (6) moves horizontally until the braking chamber (13) is connected to the accommodating chamber (10), the elastic member (11) releases energy and resets, and the elastic member (11) drives the braking member (12) to move toward the braking chamber (13).

8. The nuclear power burst valve according to claim 7, characterized in that: The nuclear power explosion valve also includes: A reset structure acts on the brake member (12) so that the brake member (12) acts on the elastic member (11).

9. The nuclear power bursting valve according to any one of claims 2 to 4, characterized in that: The combustion chamber (5) comprises a fuel ignition chamber (51) and a fuel discharge chamber (52); the inner wall of the fuel ignition chamber (51) is provided with a fuel discharge inlet (53); the inner wall of the fuel discharge chamber (52) is provided with a fuel discharge outlet (54); the fuel discharge inlet (53) is communicated with the fuel discharge outlet (54) through a fuel discharge passage (55); when the combustible material is not ignited, the end of the piston (6) blocks the fuel discharge inlet (53); the fuel ignition chamber (51) and the fuel discharge chamber (52) are separated by the piston (6); when the combustible material is ignited, the piston (6) moves in a horizontal direction until the piston (6) is braked, and the fuel ignition chamber (51) and the fuel discharge chamber (52) are communicated.

10. The nuclear power bursting valve according to any one of claims 2 to 4, characterized in that: The nuclear power explosion valve also includes: A fuel supply interface, the fuel supply interface is in communication with the combustion chamber (5).

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