External steam-water separator of steam generator

Abstract

The utility model relates to the technical field of steam-water separators, and discloses an external steam-water separator of a steam generator, which comprises a steam generator body, a steam-water separator body movably sleeved on the outer circular wall surface of a steam outlet of the steam generator body, and a connecting assembly, the connecting assembly is used for connecting the steam generator body and the steam-water separator body, and the effect of connecting the steam generator body and the steam-water separator body can be achieved through mutual cooperative use of a connecting pipe, a supporting plate, a rotating plate and a moving ring; the hydraulic cylinder pushes the movable ring to drive the rotating plate to extrude the fixed ring according to the lever principle, so that the steam generator body is fastened to the air inlet pipe end of the steam-water separator body, manual operation is not needed, the scalding condition is avoided, meanwhile, the air bag material is reinforced, and the service life is prolonged; double sealing is formed through the sealing ring and the air bag, steam leakage caused by air leakage damage of the air bag is avoided, and the sealing effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of steam-water separator technology, and in particular to an external steam-water separator for a steam generator. Background Technology

[0002] The steam generator is one of the key main equipment in a pressurized water reactor nuclear power plant. It serves as the pressure boundary between the primary and secondary sides, transferring heat from the primary reactor coolant to the secondary side through heat transfer tubes. This heats the secondary side water into saturated steam. The wet steam undergoes steam-water separation in the steam-water separator and dryer. The qualified steam after separation drives the turbine to generate electricity. The steam-water separator is an important component of the steam generator. The wet steam generated by the steam generator tube bundle undergoes primary separation in the steam-water separator to remove most of the water. The steam exiting the steam-water separator enters the dryer for further separation. The main function of the steam-water separator is to reduce the humidity of the steam at the dryer inlet, creating conditions for the steam generator to produce uniformly heated steam.

[0003] An existing external steam-water separator for steam generators (publication number: CN222316949U) has at least the following drawbacks:

[0004] In the aforementioned patent, the automatic triggering of air pressure fixation by the pressure of the airbag reduces manual intervention, improves sealing, and reduces the risk of steam leakage. Furthermore, the gear-rack mechanism is linked with the exhaust valve to achieve integrated operation of fixation and separation, resulting in a relatively compact structure. However, the manual push-pull rod can cause burns and other safety hazards when operated under high temperature and high pressure, making operation inconvenient. Therefore, it is necessary to propose an external steam-water separator for the steam generator to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an external steam-water separator for a steam generator.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An external steam-water separator for a steam generator includes a steam generator body. A steam-water separator body is movably sleeved on the outer circular wall of the steam generator body's outlet. The separator body further includes a connecting assembly for connecting the steam generator body and the steam-water separator body. The connecting assembly includes a connecting pipe movably sleeved on the outer circular wall of the steam inlet pipe of the steam-water separator body. Several support plates and several rotating plates are fixedly installed on the outer circular wall of the connecting pipe. The rotating plates are flexibly connected to the support plates. The rotating plate is movably fitted with a connecting plate inside. A movable ring is movably fitted on the outer circular wall of the connecting pipe. The movable ring is movably fitted with the connecting plate. Two fixing brackets are fixedly installed on the outer circular wall of the connecting pipe. A hydraulic cylinder is fixedly fitted on the inner circular wall of the fixing bracket. A fixing plate is fixedly installed at one end of the telescopic shaft of the hydraulic cylinder. The fixing plate is fixedly installed with the movable ring. A fixing ring is fixedly fitted on the outer circular wall of the steam generator body's outlet. A fixing assembly is used to fix the connecting pipe.

[0008] As a further embodiment of this utility model, the fixing component includes: a plurality of threaded holes, all of which are opened at one end of the connecting pipe; a plurality of threaded grooves are opened on one side of the gas-water separator body; and bolts are threadedly connected to the inner circular wall of the threaded holes, with the bolts threadedly connected to the threaded grooves.

[0009] As a further embodiment of this utility model, an air bladder is provided between the air inlet pipe of the steam-water separator body and the air outlet pipe of the steam generator body. The air bladder is made of fluororubber. Fixing holes are respectively provided on the inner circular wall surface of the air inlet pipe of the steam-water separator body, the inner circular wall surface of the connecting pipe, and the bottom surface of the fixing frame. The fixing holes are fixedly connected to the air inlet and outlet pipes of the air bladder. A sealing ring is fixedly installed on one side of the fixing ring.

[0010] As a further embodiment of this utility model, a four-way pipe is fixedly sleeved on the outer circular wall of the air inlet and outlet pipe of the airbag, a solenoid valve is fixedly sleeved on the inner circular wall of one end of the four-way pipe, and a pressure sensor is fixedly sleeved on the inner circular wall of the other end of the four-way pipe.

[0011] As a further embodiment of this utility model, a support frame is fixedly installed on the outer circular wall of the fixed frame, and a PLC controller is fixedly installed on one side of the support frame. The PLC controller is electrically connected to the solenoid valve and the air pressure sensor.

[0012] As a further embodiment of this utility model, one end of the connecting pipe is provided with a plurality of limiting grooves, and a limiting block is movably sleeved inside the limiting groove, and the limiting block is fixedly installed with the moving ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By using the steam generator body, steam-water separator body, connecting pipe, support plate, rotating plate, and moving ring in coordination, the steam generator body and the steam-water separator body can be connected. The moving ring is driven by a hydraulic cylinder to drive the rotating plate to squeeze the fixed ring using the lever principle, so that the steam generator body is firmly fixed to the air inlet pipe end of the steam-water separator body. No manual operation is required, avoiding burns. At the same time, the airbag material is strengthened to improve service life. The sealing ring and airbag form a double seal to prevent steam leakage in case of airbag leakage or damage, ensuring the sealing effect.

[0015] 2. When disconnection is required, activate the solenoid valve to release the pressure and allow the gas in the airbag to be discharged. Then, activate the hydraulic cylinder to push the moving ring to drive the connecting plate and the rotating plate to rotate in opposite directions, so that the rotating plate releases the fixing of the steam generator body's outlet pipe. The steam generator body can then be pulled out of the steam-water separator body. At the same time, the connecting pipe can be detached by unscrewing the bolts from the threaded holes, achieving modular disassembly and assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an external steam-water separator for a steam generator proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the connecting pipe structure of an external steam-water separator for a steam generator proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the airbag structure of an external steam-water separator for a steam generator proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing ring structure of an external steam-water separator for a steam generator proposed in this utility model.

[0020] In the diagram: 1. Steam generator body; 2. Steam-water separator body; 3. Connecting pipe; 4. Support plate; 5. Rotating plate; 6. Connecting plate; 7. Moving ring; 8. Fixing frame; 9. Hydraulic cylinder; 10. Fixing plate; 11. Fixing ring; 12. Threaded hole; 13. Bolt; 14. Airbag; 15. Sealing ring; 16. Fixing hole; 17. Four-way pipe; 18. Solenoid valve; 19. Support frame; 20. Limit block; 21. Air pressure sensor; 22. Limit groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figures 1-4 An external steam-water separator for a steam generator includes a steam generator body 1. A steam-water separator body 2 is movably sleeved on the outer circular wall of the steam generator body 1's outlet. The separator also includes a connecting assembly for connecting the steam generator body 1 and the steam-water separator body 2. The connecting assembly includes a connecting pipe 3, which is movably sleeved on the outer circular wall of the steam inlet pipe of the steam-water separator body 2. Several support plates 4 and several rotating plates 5 are fixedly installed on the outer circular wall of the connecting pipe 3, and the rotating plates 5 are movably connected to the support plates 4. The rotating plate 5 is movably fitted with a connecting plate 6. The outer circular wall of the connecting pipe 3 is movably fitted with a moving ring 7. The moving ring 7 is movably fitted with the connecting plate 6. Two fixing brackets 8 are fixedly installed on the outer circular wall of the connecting pipe 3. A hydraulic cylinder 9 is fixedly fitted on the inner circular wall of the fixing bracket 8. A fixing plate 10 is fixedly installed at one end of the telescopic shaft of the hydraulic cylinder 9. The fixing plate 10 is fixedly installed with the moving ring 7. A fixing ring 11 is fixedly fitted on the outer circular wall of the steam outlet of the steam generator body 1. The fixing assembly is used to fix the connecting pipe 3.

[0025] In use, when connection is required, the outlet of the steam generator body 1 is connected to the inlet of the steam-water separator body 2. Then, the hydraulic cylinder 9 is activated to pull the moving ring 7 outward with the cooperation of the limiting block 20 and the limiting groove 22. The moving ring 7 pushes the connecting plate 6 to form a lever rotation under the support of the two support plates 4. The rotating plate 5 pushes the fixed ring 11 outside the steam generator body 1. The lever action amplifies the pushing force of the rotating plate 5 on the fixed ring 11 and the steam generator body 1, so that the fixed ring 11 drives the sealing ring 15 to squeeze and seal one end of the steam generator body 1. Then, the air pump outlet valve is activated to allow gas to enter the four-way pipe 17 and the air bag 14. The air bag 14 further seals the space between the steam generator body 1 and the steam-water separator body 2, and the air pressure is detected by the air pressure sensor 21.

[0026] In this embodiment, the fixing component includes: a plurality of threaded holes 12, all of which are opened at one end of the connecting pipe 3; a plurality of threaded grooves are opened on one side of the gas-water separator body 2; and bolts 13 are threadedly connected to the inner circular wall of the threaded holes 12, with the bolts 13 being threadedly connected to the threaded grooves.

[0027] When in use, if it is necessary to disconnect, start the solenoid valve 18 to release the pressure and allow the gas in the air bag 14 to be discharged. Then, start the hydraulic cylinder 9 to push the moving ring 7 to drive the connecting plate 6 and the rotating plate 5 to rotate in opposite directions, so that the rotating plate 5 releases the fixation of the steam generator body 1's air outlet pipe, and the steam generator body 1 can be pulled out from the steam-water separator body 2. At the same time, by unscrewing the bolt 13 from the threaded hole 12, the connecting pipe 3 can be disassembled, realizing modular disassembly and assembly.

[0028] In this embodiment, an air bladder 14 is provided between the air inlet pipe of the steam-water separator body 2 and the air outlet pipe of the steam generator body 1. The air bladder 14 is made of fluororubber. Fixing holes 16 are respectively provided on the inner circular wall of the air inlet pipe of the steam-water separator body 2, the inner circular wall of the connecting pipe 3, and the bottom surface of the fixing bracket 8. The fixing holes 16 are fixedly sleeved with the air inlet and outlet pipes of the air bladder 14. A sealing ring 15 is fixedly installed on one side of the fixing ring 11. A four-way pipe 17 is fixedly sleeved on the outer circular wall of the air inlet and outlet pipes of the air bladder 14. A solenoid valve 18 is fixedly sleeved on the inner circular wall of one end of the air port, and a pressure sensor 21 is fixedly sleeved on the inner circular wall of the other end of the four-way pipe 17. A support frame 19 is fixedly installed on the outer circular wall of the fixing frame 8. A PLC controller is fixedly installed on one side of the support frame 19. The PLC controller is electrically connected to the solenoid valve 18 and the pressure sensor 21. Several limiting grooves 22 are opened at one end of the connecting pipe 3. Limiting blocks 20 are movably sleeved inside the limiting grooves 22. The limiting blocks 20 are fixedly installed with the moving ring 7.

[0029] When in use, the airbag 14 is made of fluororubber or silicone to enhance its high temperature resistance (>200℃) and anti-aging properties. The sealing ring 15 and the airbag 14 form a double seal to prevent steam leakage when the airbag 14 is damaged, thus ensuring the sealing effect.

[0030] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0031] When the user needs to connect the steam generator body 1 and the steam-water separator body 2, the air inlet of the four-way pipe 17 is connected to the air outlet pipe of the air pump. The air pressure is detected by the air pressure sensor 21, and the air is vented through the solenoid valve 18. During connection, after the air outlet of the steam generator body 1 is connected to the air inlet of the steam-water separator body 2, the hydraulic cylinder 9 is activated to pull the moving ring 7 outward with the cooperation of the limit block 20 and the limit groove 22. 7. The connecting plate 6 is rotated by levers under the support of the two support plates 4. The rotating plate 5 pushes the fixing ring 11 outside the steam generator body 1. The lever action amplifies the pushing force of the rotating plate 5 on the fixing ring 11 and the steam generator body 1, causing the fixing ring 11 to drive the sealing ring 15 to squeeze and seal one end of the steam generator body 1. Then, the air pump's outlet valve is activated, allowing gas to enter the four-way pipe 17 and the air bag 14. The air bag 14 then seals the steam generator body 1 and the steam-water separator body 2. The air chamber is further sealed, and the air pressure is detected by the air pressure sensor 21. The air bladder 14 is made of fluororubber or silicone to enhance its high temperature resistance (>200℃) and anti-aging performance. When it is necessary to disconnect the connection, the solenoid valve 18 is activated to release the pressure and allow the gas in the air bladder 14 to be discharged. Then, the hydraulic cylinder 9 is activated to push the moving ring 7 to drive the connecting plate 6 and the rotating plate 5 to rotate in opposite directions, so that the rotating plate 5 releases the fixation of the steam generator body 1's air outlet pipe. The steam generator body 1 can then be pulled out from the steam-water separator body 2, completing the rapid separation. This achieves the combined effect of connecting the steam generator body 1 and the steam-water separator body 2. The hydraulic cylinder 9 pushes the moving ring 7 to drive the rotating plate 5 to squeeze the fixing ring 11 using the lever principle, so that the steam generator body 1 is firmly fixed to the air inlet pipe end of the steam-water separator body 2. No manual operation is required, avoiding burns. At the same time, the material of the air bladder 14 is strengthened to improve its service life. The sealing ring 15 and the air bladder 14 form a double seal to prevent steam leakage when the air bladder 14 is damaged, ensuring the sealing effect.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An external steam-water separator for a steam generator, comprising a steam generator body (1), wherein a steam-water separator body (2) is movably sleeved on the outer circular wall of the steam outlet of the steam generator body (1), characterized in that, Also includes: A connecting assembly is provided for connecting the steam generator body (1) and the steam-water separator body (2). The connecting assembly includes a connecting pipe (3), which is movably sleeved on the outer circular wall of the air inlet pipe of the steam-water separator body (2). Several support plates (4) and several rotating plates (5) are fixedly installed on the outer circular wall of the connecting pipe (3). The rotating plates (5) are movably sleeved with the support plates (4), and a connecting plate (6) is movably sleeved inside the rotating plates (5). A movable ring (7) is movably sleeved on the outer circular wall of the connecting pipe (3). The movable ring (7) is movably sleeved with the connecting plate (6). Two fixed brackets (8) are fixedly installed on the outer circular wall of the connecting pipe (3). A hydraulic cylinder (9) is fixedly sleeved on the inner circular wall of the fixed bracket (8). A fixed plate (10) is fixedly installed at one end of the telescopic shaft of the hydraulic cylinder (9). The fixed plate (10) is fixedly installed with the movable ring (7). A fixed ring (11) is fixedly sleeved on the outer circular wall of the steam generator body (1). A fixing component is used to fix the connecting pipe (3).

2. A separated water vaporizer external vapor- water separator according to claim 1, characterized in that The fixing component includes: a plurality of threaded holes (12), all of which are opened at one end of the connecting pipe (3), and a plurality of threaded grooves are opened on one side of the gas-water separator body (2). The inner circular wall of the threaded hole (12) is threaded with a bolt (13), and the bolt (13) is threadedly connected to the threaded groove.

3. A separated water and steam external separator of a steam generator according to claim 1, characterized in that, An air bag (14) is provided between the air inlet pipe of the steam-water separator body (2) and the air outlet pipe of the steam generator body (1). The air bag (14) is made of fluororubber. Fixing holes (16) are respectively opened on the inner circular wall of the air inlet pipe of the steam-water separator body (2), the inner circular wall of the connecting pipe (3) and the bottom surface of the fixing frame (8). The fixing holes (16) are fixedly connected to the air inlet and outlet pipes of the air bag (14). A sealing ring (15) is fixedly installed on one side of the fixing ring (11).

4. A separated water and steam external separator of a steam generator according to claim 3, characterized in that, The outer circular wall of the air inlet and outlet pipe of the airbag (14) is fixedly sleeved with a four-way pipe (17), and the inner circular wall of the air port at one end of the four-way pipe (17) is fixedly sleeved with a solenoid valve (18), and the inner circular wall of the air port at the other end of the four-way pipe (17) is fixedly sleeved with a pressure sensor (21).

5. A separated water and steam external separator of a steam generator according to claim 4, characterized in that, A support frame (19) is fixedly installed on the outer circular wall of the fixed frame (8). A PLC controller is fixedly installed on one side of the support frame (19). The PLC controller is electrically connected to the solenoid valve (18) and the air pressure sensor (21).

6. A separated water and steam external separator of a steam generator according to claim 1, characterized in that, One end of the connecting pipe (3) is provided with several limiting grooves (22), and a limiting block (20) is movably sleeved inside the limiting groove (22). The limiting block (20) is fixedly installed with the moving ring (7).

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