Safety valve device for protecting steam turbine

Abstract

The invention discloses a safety valve device for protecting a steam turbine, and relates to the field of safety valves, the safety valve device comprises a safety valve body and an adapter pipe, one side of the safety valve body is provided with a pressure relief pipe, the pressure relief pipe is connected with a pressure relief adapter box, and the adapter pipe is connected to the pressure relief adapter box; the device further comprises an active enclosure heat preservation mechanism and a circumference cleaning mechanism. It needs to be explained that during pressure relief, the safety valve body is protected by the four rotating surrounding baffles, and the problem that the safety valve body is accidentally contacted during pressure relief is avoided; during pressure relief, the adaptive cleaning frame is used for cleaning the surface of the safety valve body, so that the problem of dust and water accumulation on the outer side of the valve is further avoided, and the valve is prevented from being rusted and damaged; in addition, when the safety valve body is subjected to pressure relief, the two blowing-off rotating plates are blown to rotate, vibration caused when steam is exhausted is effectively reduced, balance of the temperature inside and outside the safety valve body is achieved, a series of problems caused by temperature difference are avoided, and the service life of the safety valve is prolonged.

Description

Technical Field

[0001] This invention relates to the field of safety valve technology, and in particular to a safety valve device for protecting steam turbines. Background Technology

[0002] A steam turbine is an external combustion rotary machine that converts the thermal energy of steam into mechanical work. Steam from the boiler enters the turbine and passes through a series of annular nozzles and blades, converting its thermal energy into the mechanical energy of the turbine rotor. Different energy conversions within the turbine result in turbines operating on different principles. The turbine safety valve acts as an "automatic pressure relief fuse" in the steam system, serving as the last line of defense against overpressure explosions. Installed in the turbine's inlet pipe, main steam valve, reheat steam pipe, and cylinder, it automatically opens when the steam pressure exceeds a set value, venting excess steam to the atmosphere or condenser. Once the pressure drops to a safe level, it automatically closes, restoring normal operation and preventing pipe / cylinder overpressure rupture or bursting.

[0003] It should be noted that when the safety valve in the steam pipeline is depressurized, the direct injection of high-temperature and high-pressure steam can easily cause burns to personnel and damage to surrounding equipment. Existing fixed protection operations are cumbersome and affect maintenance, while manual protection is subject to delays. In the steam system, the inside of the safety valve is high-temperature steam, while the outside is ambient temperature. During depressurization, the alternation of hot and cold exacerbates the temperature difference, which can easily generate thermal stress, leading to valve body deformation, seal failure, condensation corrosion, and condensation on the outside of the valve body. Furthermore, impurities in the steam can cause rust. In addition, the steam in the steam pipeline is an industrial energy source. When the existing safety valve is depressurized, the steam is directly discharged into the air, resulting in energy waste and on-site noise. The direct injection of high-temperature and high-pressure steam has a strong impact force, which can easily cause vibration and loosening of pipelines and equipment around the depressurization port in the long term, thereby damaging the valve and even affecting the operation of the steam turbine. Summary of the Invention

[0004] The purpose of this invention is to provide a safety valve device for protecting steam turbines, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A safety valve device for protecting a steam turbine includes a safety valve body and a transfer pipe. A pressure relief pipe is provided on one side of the safety valve body, and a pressure relief transfer box is connected to the pressure relief pipe. The transfer pipe is connected to the pressure relief transfer box. It also includes an active enclosure and insulation mechanism, which is installed on the safety valve body and is used to actively enclose the safety valve body. The active enclosure and insulation mechanism includes a connecting transfer plate, which is installed on the safety valve body. Rotating baffles are rotatably installed on all four sides of the connecting transfer plate. The four rotating baffles rotate to enclose the safety valve body. A dust blowing pusher is slidably installed on the connecting transfer plate. A transfer air pipe and a horizontal linkage frame are connected to the dust blowing pusher. Both the transfer air pipe and the horizontal linkage frame are connected to the pressure relief transfer box. It also includes a circumferential cleaning mechanism, which is installed on the safety valve body and is used to actively clean the safety valve body. The circumferential cleaning mechanism includes a mounting frame, which is installed on the connecting transfer plate. Two adapter cleaning frames are rotatably mounted on the mounting frame. A transfer pusher is connected to the pressure relief transfer box, and two synchronous pushers are installed on the transfer pusher. The movement of the two synchronous pushers pushes the two adapter cleaning frames to rotate, thereby cleaning the safety valve body.

[0007] Furthermore, in a preferred embodiment of the present invention, the active enclosure insulation mechanism further includes four drive rotating plates, which are rotatably mounted around the connecting rotating plate, and the four rotating enclosure plates are respectively mounted on the four drive rotating plates. The dust blowing pusher is equipped with four synchronous downward push plates. The downward movement of the dust blowing pusher drives the four synchronous downward push plates to rotate the four drive plates.

[0008] Furthermore, in a preferred embodiment of the present invention, two enclosure rotating grooves are provided on all four sides of the connecting transfer plate, and enclosure rotating shafts are rotatably installed in the two enclosure rotating grooves, with the driving rotating plate mounted on the enclosure rotating shafts; A torsion spring is installed on the inner wall of the enclosure rotation groove, and the torsion spring is mounted on the enclosure rotation shaft.

[0009] Furthermore, in a preferred embodiment of the present invention, four dust blowing pipes are installed on the dust blowing pusher, and multiple dust blowing heads are installed on the dust blowing pipes.

[0010] Furthermore, in a preferred embodiment of the present invention, a transition rod and a linkage rod are rotatably mounted on the dust blowing pusher and the connecting transfer plate, respectively, and a transverse push-pull shaft is rotatably mounted on the transition rod and the linkage rod, and the transverse push-pull shaft is mounted on the transverse linkage frame; Both the dust blower frame and the connecting transfer plate are rotatably mounted with adapter shafts, and the two adapter shafts are respectively mounted on the dust blower frame and the connecting transfer plate.

[0011] Furthermore, in a preferred embodiment of the present invention, the circumferential cleaning mechanism further includes two passive rotating seats, which are respectively mounted on the two adapter cleaning frames; Both of the passive rotating seats are provided with mounting slots, and mounting shafts are rotatably mounted in the two mounting slots. The mounting shafts are mounted on the mounting frame. A rotary torsion spring is installed on the inner wall of the mounting slot, and the rotary torsion spring is mounted on the mounting hanger shaft.

[0012] Furthermore, in a preferred embodiment of the present invention, each of the two passive rotating seats is provided with a limiting groove, and a limiting ring is rotatably installed in the limiting groove, the limiting ring being sleeved on the mounting shaft.

[0013] Furthermore, in a preferred embodiment of the present invention, a pressure relief linkage mechanism is also included. The pressure relief linkage mechanism is installed on the pressure relief adapter box and is used to drive the active enclosure insulation mechanism and the circumferential cleaning mechanism. The pressure relief linkage mechanism includes two blow-opening rotating plates, both of which are rotatably installed inside the pressure relief transfer box. The two blow-opening rotating plates are used to close the pressure relief transfer box.

[0014] Furthermore, in a preferred embodiment of the present invention, pressure relief drive frames are slidably installed on both the top and bottom sides of the pressure relief adapter box, and the transverse linkage frame and the adapter push frame are respectively installed on the two pressure relief drive frames; The pressure relief adapter box is provided with limiting grooves on both the top and bottom sides. A limiting slider is slidably installed in the limiting groove and is mounted on the pressure relief drive frame. Two intermediate rotating rods are rotatably mounted on the top and bottom sides of the pressure relief adapter box. A rotating drive shaft is rotatably mounted on the intermediate rotating rod. A rotating drive hole is opened on the pressure relief drive frame, and the rotating drive shaft is movably installed in the rotating drive hole.

[0015] Furthermore, in a preferred embodiment of the present invention, two reset slots are provided on the top and bottom sides of the pressure relief adapter box, a transfer shaft is installed on the blow-opening plate, and two transfer rods are respectively installed on both ends of the transfer shaft; A reset torsion spring is installed on the inner wall of the reset slot, and the reset torsion spring is installed on the intermediate rotating shaft.

[0016] The beneficial effects of the safety valve device for protecting steam turbines proposed in this invention are: In this invention, the active enclosure insulation mechanism protects the safety valve body during pressure relief by having four rotating baffles, preventing accidental contact. Furthermore, the push plate triggers the folding enclosure to rotate and stand upright the instant the steam is ejected, achieving simultaneous pressure relief and protection without manual intervention delay. This effectively blocks high-temperature, high-pressure steam splashes, preventing burns to personnel and damage to surrounding equipment, thus improving on-site safety. In addition, the folding enclosure is fully unfolded when steam is not ejected, without obstructing the safety valve body, manual release wrench, flange connection, nameplate, etc., eliminating the need for manual disassembly and reinstallation of protective devices. This allows for offline calibration, disassembly, maintenance, and routine inspection of the safety valve, significantly improving the convenience and efficiency of on-site operations.

[0017] Furthermore, in this invention, through the setting of the circumferential cleaning mechanism, when the pressure is released, the transfer pusher moves and drives the two synchronous pushers to disengage from the two passive rotating seats. At this time, under the rotational force of the two rotary torsion springs, the two passive rotating seats rotate. The rotation of the passive rotating seats drives the two adapter cleaning frames to rotate, thereby enabling the adapter cleaning frames to clean the surface of the safety valve body, ensuring the cleanliness of the safety valve body. At the same time, the passive rotating seats rotate on the limiting rotating ring through the limiting rotating groove, ensuring the stable rotation of the passive rotating seats, avoiding the accumulation of dust and water on the outside of the valve, and further preventing the valve from rusting and being damaged.

[0018] Furthermore, in this invention, by setting up a pressure relief linkage mechanism, when the safety valve body is depressurized, two blow-opening rotating plates are driven to rotate, effectively reducing the vibration caused by steam discharge. After the blow-opening rotating plates rotate, the blown gas enters the dust-blowing pusher through the transfer air pipe, then enters the dust-blowing pipe, and is then sprayed out through multiple dust-blowing heads, achieving dust cleaning of the safety valve body. It also increases the external temperature of the safety valve body, achieving a balance between the internal and external temperatures of the safety valve body, effectively ensuring the safe use of the safety valve body. In addition, the steam is discharged through the air outlet on the rotating frame... Steam is precisely injected onto the outside of the safety valve, actively increasing the temperature on the outside of the valve and significantly reducing the temperature difference between the inside and outside. This fundamentally avoids thermal stress and condensation corrosion caused by temperature differences, effectively preventing valve body deformation, aging and failure of seals, and corrosion of flange sealing surfaces. This extends the service life of the safety valve and improves its sealing reliability and the effectiveness of overpressure protection. In addition, the exhaust pipe returns some of the depressurized steam to the steam pipe, reducing the meaningless venting of industrial steam, reducing energy consumption, and using the depressurized steam itself as a heat source for insulation. There is no need to consume additional steam, electricity, heat, or other energy, achieving efficient energy utilization. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of a safety valve device for protecting a steam turbine provided in an embodiment of the present invention; Figure 2This is a schematic diagram illustrating the connection between the active enclosure insulation mechanism and the circumferential cleaning mechanism of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention. Figure 3 This is a partial cross-sectional view of the connection between the connecting transfer plate and the dust blowing pusher of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention. Figure 4 This is a partial cross-sectional view of the connection between the connecting transfer plate and the synchronous push plate of a safety valve device for protecting a steam turbine, provided in an embodiment of the present invention. Figure 5 A schematic diagram illustrating the connection between the mounting frame and synchronous pusher of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention. Figure 6 This is a partial cross-sectional view of the connection between the mounting frame and the passive rotating seat of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention. Figure 7 A safety valve device for protecting a steam turbine is provided as an embodiment of the present invention. Figure 5 A schematic diagram of the structure of part A; Figure 8 This is a partial structural diagram illustrating the connection between the blow-opening rotating plate and the intermediate rotating rod of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention. Figure 9 This is a partial structural diagram illustrating the connection between the pressure relief drive frame and the intermediate rotating rod of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention. Figure 10 This is a partial cross-sectional view of the connection between the pressure relief drive frame and the limiting slider of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention. Figure 11 This is a partial cross-sectional view of the connection between the pressure relief adapter box and the blow-out turntable of a safety valve device for protecting a steam turbine, as provided in an embodiment of the present invention.

[0020] In the diagram: 1. Safety valve body; 2. Transfer pipe; 3. Pressure relief pipe; 4. Active enclosure insulation mechanism; 401. Connecting transfer plate; 402. Rotating enclosure plate; 403. Drive plate; 404. Enclosure rotating groove; 405. Enclosure rotating shaft; 406. Synchronous push plate; 407. Dust blowing pusher; 408. Dust blowing pipe; 409. Dust blowing head; 410. Transfer air pipe; 411. Transfer rod; 412. Linkage rod; 413. Transfer shaft; 414. Horizontal linkage frame; 415. Horizontal push-pull shaft; 416. Enclosure torsion spring; 5. Circumferential cleaning mechanism; 501. Mounting frame. 502. Passive rotating seat; 503. Adaptive cleaning frame; 504. Adapter push frame; 505. Synchronous push frame; 506. Mounting rotating slot; 507. Mounting hanging shaft; 508. Rotary torsion spring; 509. Restricting rotating slot; 510. Restricting rotation; 6. Pressure relief adapter box; 7. Pressure relief linkage mechanism; 701. Blow-open rotating plate; 702. Pressure relief drive frame; 703. Central rotating rod; 704. Reset rotating slot; 705. Central rotating shaft; 706. Reset torsion spring; 707. Rotation drive shaft; 708. Rotation drive hole; 709. Restricting slide groove; 710. Restricting slider. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Please refer to the attached instruction manual. Figures 1-11 The present invention provides a safety valve device for protecting a steam turbine, which includes a safety valve body 1 and a transfer pipe 2. A pressure relief pipe 3 is provided on one side of the safety valve body 1, and a pressure relief transfer box 6 is connected to the pressure relief pipe 3. The transfer pipe 2 is connected to the pressure relief transfer box 6.

[0028] Further, please refer to the appendix to the instruction manual. Figures 2-4 The present invention provides a safety valve device for protecting a steam turbine, which further includes an active containment and insulation mechanism 4. The active containment and insulation mechanism 4 is installed on the safety valve body 1 and is used to actively contain the safety valve body 1. Specifically, the active containment and insulation mechanism 4 includes a connecting transfer plate 401, which is installed on the safety valve body 1. Rotating baffle plates 402 are rotatably installed around the connecting transfer plate 401. The four rotating baffle plates 402 rotate to contain the safety valve body 1. A dust blowing pusher 407 is slidably installed on the connecting transfer plate 401. A transfer air pipe 410 and a transverse linkage frame 414 are connected to the dust blowing pusher 407. The transfer air pipe 410 and the transverse linkage frame 414 are both connected to the pressure relief transfer box 6.

[0029] It should be noted that, in this embodiment of the invention, when the safety valve body 1 is depressurized, the dust blowing pusher 407 drives four synchronous lower push plates 406 to push four drive rotating plates 403 to rotate. The rotation of the drive rotating plates 403 drives the rotating baffle plate 402 to rotate, thereby protecting the safety valve body 1 from accidental contact during depressurization. In addition, after the rotating plate 701 is opened, the blown gas enters the dust blowing pusher 407 through the transfer air pipe 410, then enters the dust blowing pipe 408, and is then sprayed out through multiple dust blowing heads 409 to clean the safety valve body 1. It can also raise the external temperature of the safety valve body 1, achieving a balance between the internal and external temperatures of the safety valve body 1, which can effectively ensure the safe use of the safety valve body 1.

[0030] More specifically, in this embodiment of the invention, a circumferential cleaning mechanism 5 is also included. The circumferential cleaning mechanism 5 is installed on the safety valve body 1 and is used to actively clean the safety valve body 1. The circumferential cleaning mechanism 5 includes a mounting frame 501, which is mounted on a connecting transfer plate 401. Two adapter cleaning frames 503 are rotatably mounted on the mounting frame 501. A transfer pusher 504 is connected to the pressure relief transfer box 6, and two synchronous pushers 505 are installed on the transfer pusher 504. The two synchronous pushers 505 move to push the two adapter cleaning frames 503 to rotate, thereby cleaning the safety valve body 1. It should be noted that in this embodiment of the invention, when the safety valve body 1 is depressurized, the two passive rotating seats 502 drive the two adapter cleaning frames 503 to rotate, thereby allowing the adapter cleaning frames 503 to clean the surface of the safety valve body 1, further ensuring the cleanliness of the safety valve body 1.

[0031] Please continue to refer to the instruction manual appendix. Figures 2-4 Furthermore, the safety valve device for protecting a steam turbine provided in this embodiment of the invention, the active enclosure and heat preservation mechanism 4 also includes four drive rotating plates 403, the four drive rotating plates 403 are rotatably mounted on the periphery of the connecting intermediate rotating plate 401, and four rotating enclosure plates 402 are respectively mounted on the four drive rotating plates 403. Furthermore, four synchronously pushing plates 406 are installed on the dust blowing pusher 407. The downward movement of the dust blowing pusher 407 drives the four synchronously pushing plates 406 to rotate the four drive rotating plates 403. It should be noted that, in this embodiment of the invention, when the dust blowing pusher 407 moves downward, it drives the four synchronously pushing plates 406 to rotate the four drive rotating plates 403, and the rotation of the drive rotating plates 403 drives the rotating baffle plate 402 to rotate, thereby enabling the four rotating baffle plates 402 to protect the safety valve body 1.

[0032] More specifically, in this embodiment of the invention, two retaining grooves 404 are formed on all four sides of the connecting transfer plate 401. A retaining shaft 405 is rotatably mounted within each of the two retaining grooves 404, and a driving plate 403 is mounted on the retaining shaft 405. A retaining torsion spring 416 is installed on the inner wall of each retaining groove 404, and the retaining torsion spring 416 is mounted on the retaining shaft 405. It should be noted that in this embodiment of the invention, the driving plate 403 drives the retaining shaft 405 to rotate within the two retaining grooves 404, causing the two retaining torsion springs 416 to be stressed. Therefore, under the torsional force of the retaining torsion springs 416, the driving plate 403 is reset.

[0033] More specifically, in this embodiment of the invention, four dust-blowing pipes 408 are installed on the dust-blowing pusher 407, and multiple dust-blowing heads 409 are installed on the dust-blowing pipes 408. It should be noted that, in this embodiment of the invention, when the safety valve body 1 is in use, the gas blown out by it enters the dust-blowing pusher 407 through the adapter air pipe 410, then enters the dust-blowing pipes 408, and is then sprayed out through the multiple dust-blowing heads 409 to clean the safety valve body 1 by blowing away dust, and can also adjust the temperature of the safety valve body 1 to reduce the temperature difference between the inside and outside of the safety valve body 1.

[0034] Please continue to refer to the instruction manual appendix. Figures 2-4 More specifically, in this embodiment of the invention, a transition rod 411 and a linkage rod 412 are rotatably mounted on the dust blowing pusher 407 and the connecting transfer plate 401, respectively. A transverse push-pull shaft 415 is rotatably mounted on the transition rod 411 and the linkage rod 412, and the transverse push-pull shaft 415 is mounted on the transverse linkage frame 414. Furthermore, both the dust blowing pusher 407 and the connecting transfer plate 401 are rotatably mounted with adapter shafts 413, with the two adapter shafts 413 respectively mounted on the dust blowing pusher 407 and the connecting transfer plate 401. It should be noted that, in this embodiment of the invention, a pressure relief drive frame 702 moves, causing the transverse push-pull shaft 415 to move, which in turn causes the adapter rod 411 and the linkage rod 412 to rotate. The rotation of the adapter rod 411 and the linkage rod 412 pulls the dust blowing pusher 407 downward through an adapter shaft 413, thereby realizing the automatic movement of the dust blowing pusher 407.

[0035] Please refer to the instruction manual attached. Figure 2 and Figures 5-7 Furthermore, the safety valve device for protecting a steam turbine provided in this embodiment of the invention includes a circumferential cleaning mechanism 5 that further includes two passive rotating seats 502, which are respectively mounted on two adapter cleaning frames 503. Furthermore, each of the two passive rotating seats 502 is provided with a mounting slot 506, and a mounting shaft 507 is rotatably mounted in the two mounting slots 506. The mounting shaft 507 is mounted on the mounting frame 501. A rotary torsion spring 508 is installed on the inner wall of the mounting slot 506, and the rotary torsion spring 508 is mounted on the mounting shaft 507. It should be noted that, in this embodiment of the invention, the movement of the adapter pusher 504 causes the two synchronous pushers 505 to disengage from the two passive rotating seats 502. At this time, under the rotational force of the two rotary torsion springs 508, the two passive rotating seats 502 rotate. The rotation of the passive rotating seats 502 drives the two adapter cleaning frames 503 to rotate, thereby realizing automatic cleaning of the safety valve body 1.

[0036] More specifically, in this embodiment of the invention, each of the two passive rotating seats 502 is provided with a limiting groove 509, and a limiting ring 510 is rotatably installed in the limiting groove 509, the limiting ring 510 being sleeved on the mounting shaft 507. It should be noted that, in this embodiment of the invention, the passive rotating seat 502 rotates through the limiting groove 509 and rotates on the limiting ring 510, so that the passive rotating seat 502 does not move radially when it rotates.

[0037] Please refer to the instruction manual attached. Figure 2 and Figures 8-11 Furthermore, the safety valve device for protecting a steam turbine provided in this embodiment of the invention also includes a pressure relief linkage mechanism 7, which is installed on the pressure relief transfer box 6 and is used to drive the active enclosure insulation mechanism 4 and the circumferential cleaning mechanism 5. Specifically, the pressure relief linkage mechanism 7 includes two blow-opening rotating plates 701, both of which are rotatably installed inside the pressure relief transfer box 6. The two blow-opening rotating plates 701 are used to close the pressure relief transfer box 6. It should be noted that, in this embodiment of the invention, when the safety valve body 1 is depressurized, the two blow-opening rotating plates 701 are blown to rotate, which in turn drives the two pressure relief drive frames 702 to move. The movement of the two pressure relief drive frames 702 can simultaneously drive the active enclosure insulation mechanism 4 and the circumferential cleaning mechanism 5 to operate.

[0038] More specifically, in this embodiment of the invention, pressure relief drive frames 702 are slidably installed on the top and bottom sides of the pressure relief adapter box 6, and the transverse linkage frame 414 and the adapter push frame 504 are respectively installed on the two pressure relief drive frames 702; the top and bottom sides of the pressure relief adapter box 6 are provided with limiting grooves 709, and limiting sliders 710 are slidably installed in the limiting grooves 709, and the limiting sliders 710 are installed on the pressure relief drive frames 702; Furthermore, two intermediate rotating rods 703 are rotatably mounted on the top and bottom sides of the pressure relief adapter box 6. A rotating drive shaft 707 is rotatably mounted on the intermediate rotating rod 703. A rotating drive hole 708 is opened on the pressure relief drive frame 702, and the rotating drive shaft 707 is movably installed in the rotating drive hole 708. It should be noted that, in this embodiment of the invention, the rotation of the intermediate rotating shaft 705 drives the two intermediate rotating rods 703 to rotate, so that the intermediate rotating rods 703 drive the pressure relief drive frame 702 to move through the rotating drive shaft 707. The rotating drive shaft 707 slides in the rotating drive hole 708, while the pressure relief drive frame 702 slides in the limiting groove 709 through the limiting slider 710, thereby limiting the movement direction of the pressure relief drive frame 702.

[0039] More specifically, in this embodiment of the invention, the pressure relief adapter box 6 has two reset rotating grooves 704 on its top and bottom sides. A transfer shaft 705 is installed on the blow-open rotating plate 701, and two transfer rods 703 are respectively installed on both ends of the transfer shaft 705. A reset torsion spring 706 is installed on the inner wall of the reset rotating groove 704, and the reset torsion spring 706 is installed on the transfer shaft 705. It should be noted that, in this embodiment of the invention, when the safety valve body 1 is depressurized, the two blow-open rotating plates 701 are blown to rotate. The rotation of the blow-open rotating plates 701 drives the transfer shaft 705 to rotate. The transfer shaft 705 rotates in the two reset rotating grooves 704, causing the two reset torsion springs 706 to be stressed. Therefore, after the depressurization stops, the torsional force of the reset torsion springs 706 can drive the transfer shaft 705 to reset the blow-open rotating plate 701, thus closing the safety valve body 1.

[0040] In summary, the working principle of the safety valve device for protecting steam turbines provided in this embodiment of the invention is as follows: When the safety valve body 1 is depressurized, the two blow-opening rotating plates 701 are blown to rotate. The rotation of the blow-opening rotating plates 701 drives the central rotating shaft 705 to rotate. The central rotating shaft 705 rotates in the two reset rotating grooves 704, and causes the two reset torsion springs 706 to be stressed. The rotation of the central rotating shaft 705 drives the two central rotating rods 703 to rotate, so that the central rotating rods 703 drive the depressurization drive frame 702 to move through the rotation drive shaft 707, and the rotation drive shaft 707 slides in the rotation drive hole 708. Furthermore, a pressure relief drive frame 702 moves, causing the transverse push-pull shaft 415 to move. This causes the transverse push-pull shaft 415 to drive the adapter rod 411 and the linkage rod 412 to rotate. The rotation of the adapter rod 411 and the linkage rod 412 pulls the dust blowing push frame 407 downward through an adapter shaft 413. The dust blowing push frame 407 drives four synchronous lower push plates 406 to push four drive rotating plates 403 to rotate. This causes the drive rotating plates 403 to drive the enclosure rotating shaft 405 to rotate within the two enclosure rotating grooves 404, and causes the two enclosure torsion springs 416 to be stressed. The rotation of the drive rotating plates 403 also drives the... The rotating baffle 402 rotates, thereby protecting the safety valve body 1 and preventing accidental contact during pressure relief. In addition, after the rotating blow plate 701 rotates, the blown gas enters the dust blowing pusher 407 through the transfer air pipe 410, then enters the dust blowing pipe 408, and is then sprayed out through multiple dust blowing heads 409 to clean the safety valve body 1. It can also raise the external temperature of the safety valve body 1, achieve the balance of the internal and external temperatures of the safety valve body 1, and effectively ensure the safe use of the safety valve body 1. Furthermore, another pressure relief drive frame 702 moves, causing the transfer push frame 504 to move. The movement of the transfer push frame 504 causes the two synchronous push frames 505 to disengage from the two passive rotating seats 502. At this time, under the rotational force of the two rotary torsion springs 508, the two passive rotating seats 502 rotate. The rotation of the passive rotating seats 502 causes the two adaptive cleaning frames 503 to rotate, thereby enabling the adaptive cleaning frames 503 to clean the surface of the safety valve body 1, ensuring the cleanliness of the safety valve body 1. At the same time, the passive rotating seat 502 rotates on the limiting rotating ring 510 through the limiting rotating groove 509, ensuring the stable rotation of the passive rotating seat 502.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A safety valve device for protecting a steam turbine, characterized in that, It includes a safety valve body and a transfer pipe. A pressure relief pipe is provided on one side of the safety valve body. A pressure relief transfer box is connected to the pressure relief pipe, and the transfer pipe is connected to the pressure relief transfer box. It also includes an active enclosure and insulation mechanism, which is installed on the safety valve body and is used to actively enclose the safety valve body. The active enclosure and insulation mechanism includes a connecting transfer plate, which is installed on the safety valve body. Rotating baffles are rotatably installed on all four sides of the connecting transfer plate. The four rotating baffles rotate to enclose the safety valve body. A dust blowing pusher is slidably installed on the connecting transfer plate. A transfer air pipe and a horizontal linkage frame are connected to the dust blowing pusher. Both the transfer air pipe and the horizontal linkage frame are connected to the pressure relief transfer box. It also includes a circumferential cleaning mechanism, which is installed on the safety valve body and is used to actively clean the safety valve body. The circumferential cleaning mechanism includes a mounting frame, which is installed on the connecting transfer plate. Two adapter cleaning frames are rotatably mounted on the mounting frame. A transfer pusher is connected to the pressure relief transfer box, and two synchronous pushers are installed on the transfer pusher. The movement of the two synchronous pushers pushes the two adapter cleaning frames to rotate, thereby cleaning the safety valve body.

2. The safety valve device for protecting a steam turbine according to claim 1, characterized in that, The active enclosure insulation mechanism also includes four drive rotating plates, which are rotatably mounted around the connecting rotating plate, and the four rotating enclosure plates are respectively mounted on the four drive rotating plates. The dust blowing pusher is equipped with four synchronous downward push plates. The downward movement of the dust blowing pusher drives the four synchronous downward push plates to rotate the four drive plates.

3. A safety valve device for protecting a steam turbine according to claim 2, characterized in that, Two enclosure rotation slots are provided around the connecting transfer plate, and enclosure rotating shafts are rotatably installed in the two enclosure rotation slots. The drive rotating plate is installed on the enclosure rotating shafts. A torsion spring is installed on the inner wall of the enclosure rotation groove, and the torsion spring is mounted on the enclosure rotation shaft.

4. A safety valve device for protecting a steam turbine according to claim 3, characterized in that, The dust blowing pusher is equipped with four dust blowing pipes, and multiple dust blowing heads are installed on the dust blowing pipes.

5. A safety valve device for protecting a steam turbine according to claim 4, characterized in that, The dust blowing pusher and the connecting transfer plate are respectively rotatably mounted with a connecting rod and a linkage rod. A transverse push-pull shaft is rotatably mounted on the connecting rod and the linkage rod, and the transverse push-pull shaft is mounted on the transverse linkage frame. Both the dust blower frame and the connecting transfer plate are rotatably mounted with adapter shafts, and the two adapter shafts are respectively mounted on the dust blower frame and the connecting transfer plate.

6. A safety valve device for protecting a steam turbine according to claim 1, characterized in that, The circumferential cleaning mechanism also includes two passive rotating seats, which are respectively mounted on the two adapter cleaning frames; Both of the passive rotating seats are provided with mounting slots, and mounting shafts are rotatably mounted in the two mounting slots. The mounting shafts are mounted on the mounting frame. A rotary torsion spring is installed on the inner wall of the mounting slot, and the rotary torsion spring is mounted on the mounting hanger shaft.

7. A safety valve device for protecting a steam turbine according to claim 6, characterized in that, Both of the passive rotating seats are provided with limiting grooves, and limiting rings are rotatably installed in the limiting grooves. The limiting rings are sleeved on the mounting shaft.

8. A safety valve device for protecting a steam turbine according to claim 1, characterized in that, It also includes a pressure relief linkage mechanism, which is installed on the pressure relief adapter box and is used to drive the active enclosure insulation mechanism and the circumferential cleaning mechanism; The pressure relief linkage mechanism includes two blow-opening rotating plates, both of which are rotatably installed inside the pressure relief transfer box. The two blow-opening rotating plates are used to close the pressure relief transfer box.

9. A safety valve device for protecting a steam turbine according to claim 8, characterized in that, The pressure relief adapter box is slidably mounted on both the top and bottom sides with pressure relief drive frames, and the transverse linkage frame and the adapter push frame are respectively mounted on the two pressure relief drive frames; The pressure relief adapter box is provided with limiting grooves on both the top and bottom sides. A limiting slider is slidably installed in the limiting groove and is mounted on the pressure relief drive frame. Two intermediate rotating rods are rotatably mounted on the top and bottom sides of the pressure relief adapter box. A rotating drive shaft is rotatably mounted on the intermediate rotating rod. A rotating drive hole is opened on the pressure relief drive frame, and the rotating drive shaft is movably installed in the rotating drive hole.

10. A safety valve device for protecting a steam turbine according to claim 9, characterized in that, The pressure relief adapter box has two reset slots on its top and bottom sides. A transfer shaft is installed on the blow-opening plate, and two transfer rods are respectively installed on both ends of the transfer shaft. A reset torsion spring is installed on the inner wall of the reset slot, and the reset torsion spring is installed on the intermediate rotating shaft.

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