Steam-water separation structure of steam generator

Abstract

The invention relates to the technical field of steam-water separation equipment, in particular to a steam-water separation structure of a steam generator. Comprising a shell, the shell is fixedly connected with a partition plate, and the partition plate is fixedly connected with a guide pipe; the first spiral plate is fixedly connected to the guide pipe, and a plurality of vertical plates are fixedly connected between the partition plate and the first spiral plate; the rotating frame is rotationally connected to the guide pipe, and the rotating frame is fixedly connected with a second spiral plate; the water storage shell is fixedly connected to the drainage pipe, the water storage shell is in sliding connection with a piston rod, and the piston rod is provided with a guide groove. The second spiral plate is driven to rotate to be matched with the first spiral plate, the whole flow channel is equally divided into two flow channels under the condition that the steam flowing speed is not changed, the ratio of the flowing area of a single flow channel to the perimeter of the flow channel is reduced, then the Reynolds number of steam flowing in the flow channel is reduced, turbulent flow is restrained from being formed in the steam flowing process, and the steam flowing efficiency is improved. Therefore, the stability of the steam-water separation process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam-water separation equipment, and in particular to a steam-water separation structure of a steam generator. Background Art

[0002] A steam generator is a mechanical device that uses the heat energy of fuel or other energy sources to heat water into hot water or steam. During the process of generating steam using a steam generator, some liquid water is still mixed inside the generated steam. Insufficient dryness of the steam will affect the normal use of subsequent devices. Therefore, after the steam is generated, a steam-water separator is required to separate the remaining liquid water in the steam, that is, the water droplets in the steam, to improve the dryness of the steam. Existing steam separators are divided into cyclone separators and baffle separators. Among them, the cyclone separator guides the steam to move in a spiral motion and uses the centrifugal force generated during the airflow movement to separate the liquid water. However, since the steam generation rate of the steam generator is not stable, when the flow rate of the steam entering the cyclone separator increases, the Reynolds number during the steam flow process increases, causing turbulence to easily form in some areas during the steam flow process. As a result, the separated liquid water will be rolled up by the chaotic turbulence and mixed into the steam again, resulting in the dryness of the steam still being lower than the usage requirements after passing through the cyclone separator, affecting the normal use of the steam. Summary of the Invention

[0003] The present invention provides a steam-water separation structure of a steam generator, which is used to solve the drawback that the existing water separation device is prone to form turbulence inside and the steam-water separation effect deteriorates after the steam flow rate increases.

[0004] The technical solution of the present invention is: A steam-water separation structure of a steam generator, comprising: a housing, a drain pipe, an intake pipe, and an exhaust pipe are connected to the housing, a partition plate is fixedly connected inside the housing, a guiding pipe is fixedly connected to the partition plate, and the guiding pipe penetrates through the partition plate; a first spiral plate, fixedly connected to the outside of the guiding pipe, the housing and the partition plate are both fixedly connected to the first spiral plate, and a plurality of vertical plates are fixedly connected between the partition plate and the first spiral plate; a rotating frame, rotatably connected to the guiding pipe, the rotating frame is fixedly connected with a second spiral plate, and the housing and the guiding pipe are both rotatably connected to the second spiral plate; a water storage housing, fixedly connected to the drain pipe, a piston rod is slidably connected to the water storage housing, a guiding groove is provided on the piston rod, and a convex block is provided on the rotating frame and slides in the guiding groove; a power assembly, arranged on the piston rod, for driving the piston rod to reciprocate.

[0005] Preferably, the central angle of the arc corresponding to the guiding groove in the horizontal plane projection is 180°.

[0006] Preferably, the power assembly includes: a lifting shell fixedly connected to the piston rod; a rotating shaft rotatably connected inside the guiding tube, the rotating shaft being fixedly connected with circumferentially distributed blades located inside the guiding tube; circumferentially distributed transmission rods, all hinged to one end of the rotating shaft close to the lifting shell, the transmission rods being located inside the lifting shell and used to push the lifting shell to move, a drain hole being provided at the bottom of the lifting shell; a spring fixedly connected between the piston rod and the water storage shell; a limiting assembly provided on the water storage shell for fixing the position of the rotating frame.

[0007] Preferably, the inner side of the lifting shell is a conical surface, and the diameter of the upper side of the conical surface is larger than that of the lower side.

[0008] Preferably, a rotating wheel is rotatably connected to one end of the transmission rod away from the rotating shaft.

[0009] Preferably, the limiting assembly includes: a liquid separation plate fixedly connected to the water storage shell, the liquid separation plate being slidably connected to the piston rod, and the rotating frame being rotatably connected to the liquid separation plate; symmetrically distributed limiting plates, both fixedly connected to the liquid separation plate, and the limiting plates being used to limit the position of the rotating frame.

[0010] Preferably, the limiting plate is provided with a first limiting surface and a second limiting surface, the second limiting surface being located on the facing side of the symmetrically distributed limiting plates, and the angle between the first limiting surface and the horizontal plane is greater than the angle between the second limiting surface and the horizontal plane.

[0011] Preferably, it further includes: a drainage assembly provided on the first spiral plate for delivering water between the contact surfaces of the first spiral plate and the second spiral plate, the drainage assembly including: a drainage shell fixedly connected to the vertical plate of the first spiral plate, a through hole being provided in the lower part of the water storage shell, a one-way valve being provided in the through hole, and a communicating pipe being communicated between the water storage shell and the drainage shell.

[0012] Preferably, the guiding groove is composed of a first arc-shaped groove, a straight groove, and a second arc-shaped groove, and the straight groove is located between the first arc-shaped groove and the second arc-shaped groove, and the central angle of the arc projected by the first arc-shaped groove on the horizontal plane is greater than the central angle of the arc projected by the second arc-shaped groove on the horizontal plane.

[0013] Preferably, the lower part of the drainage shell is provided with uniformly distributed diversion pipes, and the flow area of all the diversion pipes increases as the distance between them and the guiding tube increases, and all the diversion pipes on the drainage shell gradually incline away from the guiding tube in the direction from top to bottom.

[0014] The beneficial effects of the present invention are as follows: 1. After the flow rate of the steam increases, by driving the second spiral plate to rotate and cooperate with the first spiral plate, without changing the steam flow rate, the entire flow channel is equally divided into two flow channels, reducing the ratio of the flow area of a single flow channel to the perimeter of the flow channel, thereby reducing the Reynolds number of the steam flowing in the flow channel, suppressing the formation of turbulence during the steam flow, improving the stability of the steam-water separation process, and ensuring the normal progress of the steam-water separation.

[0015] 2. During the process of driving the second spiral plate to rotate, the present invention conveys water between the contact surfaces of the second spiral plate and the first spiral plate through the water discharge shell, enabling the water to flow along the gap between the first spiral plate and the second spiral plate and forming a water film between the first spiral plate and the second spiral plate, thereby reducing the probability of water droplets being rolled up by the steam again.

[0016] 3. During the process of driving the second spiral plate to rotate, the present invention restricts the angle of the second spiral plate through the straight groove, enabling the first spiral plate and the second spiral plate to remain relatively stationary after a gap appears, increasing the contact time of the water with both the first spiral plate and the second spiral plate, and ensuring that a complete water film can be formed between the adjacent surfaces of the first spiral plate and the second spiral plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the first spiral plate, the rotating frame and the second spiral plate of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the water storage shell, the piston rod and the water discharge shell of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the water storage shell, the lifting shell and the blade of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the rotating shaft, the transmission rod and the spring of the present invention; Figure 6 is a three-dimensional structural schematic diagram of the rotating shaft, the blade and the rotating wheel of the present invention; Figure 7 is a three-dimensional structural schematic diagram of the first arc-shaped groove, the straight groove and the second arc-shaped groove of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the first spiral plate, the water discharge shell and the connecting pipe of the present invention; Figure 9 is a three-dimensional structural schematic diagram of the water discharge shell of the present invention.

[0018] In the attached drawing reference numerals: 1 - housing, 2 - drain pipe, 3 - intake pipe, 4 - exhaust pipe, 5 - partition plate, 6 - guide pipe, 7 - first spiral plate, 8 - rotating frame, 9 - second spiral plate, 10 - water storage housing, 11 - piston rod, 12 - guide groove, 13 - lifting housing, 14 - rotating shaft, 15 - blade, 16 - transmission rod, 17 - spring, 18 - rotating wheel, 19 - liquid distribution plate, 20 - limiting plate, 2001 - first limiting surface, 2002 - second limiting surface, 21 - drain housing, 22 - connecting pipe, 1201 - first arc-shaped groove, 1202 - straight groove, 1203 - second arc-shaped groove. Detailed implementation manners

[0019] The present invention will be further described below in conjunction with the attached drawings and specific implementation manners.

[0020] The following is based on the Reynolds number formula. The Reynolds number formula: Re = ρvd / μ. The larger the Reynolds number, the more unstable the fluid is, and it is easy to form turbulence and complex flow field structures. Among them, ρ is the fluid density, v is the fluid velocity, d is the characteristic length, and μ is the viscosity coefficient. The selection of the characteristic length d depends on the scenario (such as the diameter of a circular pipe, the diameter of a sphere, or the hydraulic diameter, etc.). For the same fluid, ρ and μ are constant values. After the fluid velocity increases, that is, after v increases, the Reynolds number can be reduced by reducing d, thereby improving the stability during the fluid flow process.

[0021] Embodiment 1: A steam-water separation structure of a steam generator, as Figures 1-5 shown, including: a housing 1, a drain pipe 2, an intake pipe 3, and an exhaust pipe 4 are connected to the housing 1. A partition plate 5 is fixedly connected inside the housing 1. A guide pipe 6 is fixedly connected to the partition plate 5, and the guide pipe 6 penetrates through the partition plate 5; a first spiral plate 7 is fixedly connected to the outside of the guide pipe 6, and both the housing 1 and the partition plate 5 are fixedly connected to the first spiral plate 7. A plurality of vertical plates are fixedly connected between the partition plate 5 and the first spiral plate 7; a rotating frame 8 is rotatably connected to the guide pipe 6. A second spiral plate 9 is fixedly connected to the rotating frame 8, and both the housing 1 and the guide pipe 6 are rotatably connected to the second spiral plate 9; a water storage housing 10 is fixedly connected to the drain pipe 2. A piston rod 11 is slidably connected to the water storage housing 10. A guide groove 12 is provided on the piston rod 11, and a convex block that slides in the guide groove 12 is provided on the rotating frame 8; a power assembly is provided on the piston rod 11 for driving the piston rod 11 to reciprocate.

[0022] Further, as Figures 3-5 shown, the central angle of the arc corresponding to the guide groove 12 in the horizontal plane projection is 180°.

[0023] The above solution provides a method of dividing an integral flow channel into two channels after the steam flow rate increases, reducing the Reynolds number of the steam flowing in a single channel, thereby suppressing the formation of turbulence in the steam and improving the stability of steam-water separation; the drain pipe 2 is located at the lower part of the housing 1, and a pressure valve is arranged in the drain pipe 2. After collecting water at a specified height in the housing 1, the pressure valve in the drain pipe 2 opens and releases the water collected in the housing 1. The air inlet pipe 3 and the exhaust pipe 4 are both located at the upper part of the housing 1. The partition plate 5 divides the housing 1 into upper and lower chambers. The air inlet pipe 3 communicates with the lower chamber in the housing 1, and the exhaust pipe 4 communicates with the upper chamber in the housing 1. The central axis of the guide pipe 6 coincides with the central axis of the housing 1; the spiral direction of the first spiral plate 7 is clockwise ( Figure 2 , viewed from top to bottom); the rotating frame 8 is located at the bottom of the guide pipe 6. In this embodiment, there are two vertical plates between the first spiral plate 7 and the partition plate 5. The lower side surface of the front vertical plate among the two vertical plates is lower than the lower side surface of the rear vertical plate, and the height difference between the lower side surfaces of the two vertical plates is half of the pitch of the first spiral plate 7. The two vertical plates are located in the same plane. Initially, the second spiral plate 9 contacts the lower part of the front vertical plate on the first spiral plate 7. After the second spiral plate 9 rotates 180° clockwise ( Figure 2 , viewed from top to bottom), the second spiral plate 9 and the first spiral plate 7 jointly form two flow channels with the same flow area. The spiral direction of the second spiral plate 9 is the same as that of the first spiral plate 7. The second spiral plate 9 is located above the first spiral plate 7, and initially, the second spiral plate 9 fits with the first spiral plate 7, and the two jointly form a continuous flow channel; the rotating frame 8 is composed of two rings and two symmetrically distributed L-shaped rods, which is used to reduce the obstruction to the normal flow of steam. Initially, the convex block of the rotating frame 8 is located at the bottom of the guide groove 12. When the piston rod 11 moves downward, the rotating frame 8 rotates clockwise. In this embodiment, the guide groove 12 is a complete arc-shaped groove.

[0024] Furthermore, as Figures 2-6 shown, the power assembly includes: a lifting housing 13, fixedly connected to the piston rod 11; a rotating shaft 14, rotatably connected in the guide pipe 6. The rotating shaft 14 is fixedly connected with circumferentially distributed blades 15, and the blades 15 are located in the guide pipe 6; circumferentially distributed transmission rods 16, all hinged to one end of the rotating shaft 14 close to the lifting housing 13. The transmission rods 16 are located in the lifting housing 13. The transmission rods 16 are used to push the lifting housing 13 to move. A drain hole is arranged at the bottom of the lifting housing 13; a spring 17, fixedly connected between the piston rod 11 and the water storage housing 10; a limiting assembly, arranged on the water storage housing 10, used to fix the position of the rotating frame 8.

[0025] Furthermore, as Figures 2-6 shown, the inner side of the lifting housing 13 is a conical surface, and the diameter of the upper side of the conical surface is larger than that of the lower side.

[0026] Further, as shown in Figure 5 and Figure 6 A rotating wheel 18 is rotatably connected to one end of the transmission rod 16 away from the rotating shaft 14.

[0027] The above solution provides a way to drive the piston rod 11 to reciprocate according to the change of the steam flow rate in the housing 1; the lifting housing 13 is located above the piston rod 11; the rotating shaft 14 is located at the lower part in the guide pipe 6, and the blade 15 is composed of a vertical plate and an arc-shaped blade. During the process of steam flowing upward along the guide pipe 6, the steam drives the rotating shaft 14 to rotate by blowing the arc-shaped blade of the blade 15. In this embodiment, there are three transmission rods 16, all located at the lower end of the rotating shaft 14. During the rotation of the rotating shaft 14, the transmission rods 16 gradually deflect outward away from the rotating shaft 14 under the action of centrifugal force. After the outer ends of the transmission rods 16 deflect, the extrusion force between the transmission rods 16 and the lifting housing 13 increases, thereby pushing the lifting housing 13 to move downward. The drain hole at the bottom of the lifting housing 13 is used to drain the water accumulated therein, so that the rotating shaft 14 is not affected by additional resistance during rotation; the spring 17 is used to push the piston rod 11 to move upward for reset; during the process of the rotating shaft 14 driving the transmission rod 16 to rotate, the rotating wheel 18 and the lifting housing 13 are in dynamic friction to reduce the wear during their relative movement.

[0028] Further, as shown in Figures 2-5 and Figure 7 The limiting component includes: a liquid separation plate 19, fixedly connected to the water storage housing 10, the liquid separation plate 19 is slidably connected to the piston rod 11, and the rotating frame 8 is rotatably connected to the liquid separation plate 19; symmetrically distributed limiting plates 20, both fixedly connected to the liquid separation plate 19, and the limiting plates 20 are used to limit the position of the rotating frame 8.

[0029] Further, as shown in Figure 7 The limiting plate 20 is provided with a first limiting surface 2001 and a second limiting surface 2002. The second limiting surface 2002 is located on the opposite side of the symmetrically distributed limiting plates 20, and the angle between the first limiting surface 2001 and the horizontal plane is greater than the angle between the second limiting surface 2002 and the horizontal plane.

[0030] In the above solution, the liquid separation plate 19 is located at the upper part of the water storage shell 10. The liquid separation plate 19 is used to reduce the impact of the air flow on the water flow at the bottom inside the shell 1, and reduce the probability that the aggregated water is rolled up by the steam again. The bottom surface of the rotating frame 8 contacts the liquid separation plate 19, and the liquid separation plate 19 provides a supporting force for the rotating frame 8, increasing the stability of the rotating frame 8 during rotation; in this embodiment, there are two limiting plates 20, both located on the front side of the rotating frame 8 and arranged left and right; the limiting plates 20 are made of elastic material. During the rotation of the rotating frame 8, the limiting plates 20 can be deformed under the extrusion of the rotating frame 8. Initially, the first limiting surface 2001 contacts the rotating frame 8. The first limiting surface 2001 on the right limiting plate 20 is used to prevent the rotating frame 8 from rotating clockwise ( Figure 2 , from top to bottom), the first limiting surface 2001 on the left limiting plate 20 is used to prevent the rotating frame 8 from rotating counterclockwise, and the second limiting surface 2002 is used to guide the rotating frame 8 to pass through the limiting plate 20.

[0031] Working process: When dry steam is needed, the staff installs this device on the steam generator and connects the air inlet pipe 3 to the exhaust hole of the steam generator. Then the staff starts the steam generator. The steam generated by the steam generator enters the lower chamber inside the shell 1 through the air inlet pipe 3. At this time, the second spiral plate 9 and the first spiral plate 7 are attached. The steam moves downward in a spiral along the first spiral plate 7. The water droplets in the steam are thrown out under the action of centrifugal force and separated from the steam (the thrown-out water droplets contact and merge during the movement and flow along the first spiral plate 7 to the bottom of the shell 1 to gather). As the steam moves downward along the first spiral plate 7, when the steam passes through the first spiral plate 7 and enters the guide pipe 6, then the steam moves upward along the guide pipe 6 and enters the upper chamber inside the shell 1, and finally is discharged from the exhaust pipe 4. During this process, the steam drives the rotating shaft 14 to rotate counterclockwise by blowing the blades 15 ( Figure 4 , seen from top to bottom). The rotating shaft 14 drives the transmission rod 16 to rotate. The transmission rod 16 drives the rotating wheel 18 to rotate. The rotating wheel 18 presses the conical surface inside the lifting shell 13, making the lifting shell 13 tend to move downward. The lifting shell 13 presses the piston rod 11 downward. The guide groove 12 presses the convex block on the rotating frame 8, making the rotating frame 8 tend to rotate clockwise ( Figure 2 , seen from top to bottom). The rotating frame 8 presses the first limiting surface 2001 on the right limiting plate 20. At this time, the force applied by the guide groove 12 to the rotating frame 8 for circumferential rotation is less than the limiting force of the first limiting surface 2001 on the limiting plate 20 to the rotating frame 8. The rotating frame 8 and its parts cannot rotate, and the piston rod 11 and its parts do not move downward.

[0032] Since the flow rate of the steam entering the shell 1 is unstable, in the process of gradually increasing the flow rate of the steam entering the shell 1, as the flow rate of the steam entering the shell 1 gradually increases, the speed at which the blades 15 drive the rotating shaft 14 to rotate gradually increases, and the centrifugal force generated during the rotation of the transmission rod 16 gradually increases, so that the extrusion force of the rotating wheel 18 on the lifting shell 13 gradually increases, that is, the force applied by the guide groove 12 to the rotating frame 8 gradually increases. When the extrusion force is greater than the limiting force of the first limiting surface 2001 on the rotating frame 8, the piston rod 11 moves downward and compresses the spring 17. The rotating frame 8 rotates clockwise under the action of the guide groove 12, and the rotating frame 8 drives the second spiral plate 9 to rotate synchronously, so that the second spiral plate 9 is gradually separated from the first spiral plate 7, and the distance between the two is gradually increased, so that the second spiral plate 9 gradually divides the flow channel formed by the first spiral plate 7 into two upper and lower flow channels. The moving frame 8 squeezes the first limit surface 2001 and passes through the limit plate 20 on the right. During this process, the outer end of the transmission rod 16 gradually moves away from the rotating shaft 14. When the rotating frame 8 contacts the second limit surface 2002 on the left limit plate 20, the rotating frame 8 squeezes the second limit surface 2002 and gradually passes through the limit plate 20 on the left. When the protrusion on the rotating frame 8 moves to the upper end of the guide groove 12, the rotating frame 8 stops rotating and passes through the limit plate 20 on the left. At this time, the first limit surface 2001 on the left limit block 20 clamps the rotating frame 8, and the second spiral plate 9 stops rotating and cooperates with the first spiral plate 7 to form two flow channels with the same flow area, thereby reducing the flow area of ​​a single flow channel while ensuring that the steam flow area remains unchanged, reducing the Reynolds number of the steam flowing in the flow channel, thereby suppressing the formation of turbulence during the steam flow process, and the blade 15 rotates normally at this time.

[0033] In the process of gradually decreasing the steam flow rate entering the shell 1, the speed of the rotating shaft 14 decreases, the extrusion force of the transmission rod 16 on the lifting shell 13 is reduced through the rotating wheel 18, and the spring 17 pushes the piston rod 11 upward, so that the piston rod 11 reversely squeezes the protrusion of the rotating frame 8 through the guide groove 12, so that the rotating frame 8 has a tendency to rotate in the opposite direction. When the left limit plate 20 cannot fix the rotating frame 8, the spring 17 pushes the piston rod 11 to move upward, and the rotating frame 8 drives the second spiral plate 9 to rotate and reset in the opposite direction under the action of the guide groove 12. The piston rod 11 squeezes the rotating wheel 18 through the lifting shell 13, so that the transmission rod 16 reversely rotates and resets. After the piston rod 11 is reset, the rotating frame 8 stops rotating, and the second spiral plate 9 is again fitted with the first spiral plate 7 to complete the reset. After that, when the steam flow rate increases again, the second spiral plate 9 repeats the above process and rotates to cooperate with the first spiral plate 7 again to form two flow channels, reducing the probability of turbulence in the steam and ensuring the normal steam-water separation. After the steam generator is turned off, the steam no longer enters the shell 1 and the blade 15 stops rotating.

[0034] When steam flows in the flow channel formed by the cooperation of the first spiral plate 7 and the second spiral plate 9, water droplets are separated from the steam under the action of centrifugal force and form unevenly distributed water droplets on the inner wall of the flow channel. When these water droplets encounter the high-speed flowing steam, they are easily blown by the high-speed flowing steam and mixed into the steam again, affecting the effect of steam-water separation.

[0035] Embodiment 2: On the basis of Embodiment 1, as Figure 2 , Figures 3-8 and Figure 9 shown, it further includes: a drainage component, arranged on the first spiral plate 7, for conveying water between the contact surfaces of the first spiral plate 7 and the second spiral plate 9. The drainage component includes: a drainage shell 21, fixedly connected to the vertical plate of the first spiral plate 7. A through hole is provided in the lower part of the water storage shell 10, and a one-way valve is arranged in this through hole. A communication pipe 22 is connected between the water storage shell 10 and the drainage shell 21.

[0036] Furthermore, as Figure 7 shown, the guiding groove 12 is composed of a first arc-shaped groove 1201, a straight groove 1202 and a second arc-shaped groove 1203, and the straight groove 1202 is located between the first arc-shaped groove 1201 and the second arc-shaped groove 1203. The central angle of the arc corresponding to the projection of the first arc-shaped groove 1201 on the horizontal plane is larger than the central angle of the arc corresponding to the projection of the second arc-shaped groove 1203 on the horizontal plane.

[0037] Furthermore, as Figure 9 shown, the lower part of the drainage shell 21 is provided with uniformly distributed diversion pipes, and the flow area of all the diversion pipes increases as the distance between them and the guiding pipe 6 increases. All the diversion pipes on the drainage shell 21 are gradually inclined away from the guiding pipe 6 in the direction from top to bottom.

[0038] The above solution provides a method of conveying water flow to the contact surface between the first spiral plate 7 and the partition plate 5 to form a water film during the process of separating the first spiral plate 7 and the partition plate 5, reducing the possibility that the separated water droplets are blown up again by steam; initially, the upper edge of the second spiral plate 9 is located below the drain housing 21. The diameter and direction of the diversion pipe on the drain housing 21 are used to make the water discharged from the drain housing 21 tend to move outwards, so that the water flows along the outer edge of the second spiral plate 9. The piston rod 11 divides the water storage housing 10 into upper and lower chambers. The through hole of the water storage housing 10 is located in the lower chamber of the water storage housing 10, and the one-way valve is located in the lower chamber of the water storage housing 10. This one-way valve is used to allow the water in the housing 1 to only enter the water storage housing 10. There is a connecting pipe 22 communicating between the lower chamber of the water storage housing 10 and the drain housing 21; the second arc-shaped groove 1203 is located below the straight groove 1202; the central angle of the arc corresponding to the projection of the second arc-shaped groove 1203 on the horizontal plane is less than 10°, which is used to form a gap between the first spiral plate 7 and the second spiral plate 9 after the second spiral plate 9 rotates initially, enabling the water to come into full contact with both of them, facilitating the water discharged from the drain housing 21 to enter between them to form a water film.

[0039] Working process: During the downward movement of the above-mentioned piston rod 11, the one-way valve on the water storage housing 10 closes. The piston rod 11 moves downward to compress the spring 17, and the second arc-shaped groove 1203 squeezes the convex block of the rotating frame 8, and the rotating frame 8 drives the second spiral plate 9 to rotate clockwise ( Figure 2 , viewed from top to bottom). At the same time, the piston rod 11 squeezes the water in the water storage housing 10, causing the water collected in the water storage housing 10 to enter the drain housing 21 along the connecting pipe 22. Then, the drain housing 21 injects water into the gap between the first spiral plate 7 and the second spiral plate 9, enabling the water to enter between the first spiral plate 7 and the second spiral plate 9 and form a water film. The water film absorbs the separated water droplets, and at the same time, using the surface tension of the water film, reduces the amount of steam that destroys and carries away the water droplets, ensuring the effect of steam-water separation.

[0040] As the piston rod 11 continues to move downward, after the bump on the rotating frame 8 separates from the second arc-shaped groove 1203, the bump on the rotating frame 8 enters the straight groove 1202, the rotating frame 8 stops rotating, and the size of the gap between the second spiral plate 9 and the first spiral plate 7 no longer changes. The drain housing 21 continues to inject water into the gap between the second spiral plate 9 and the first spiral plate 7, facilitating the water to ensure that it can contact both of them simultaneously when entering between them. Until the bump on the rotating frame 8 moves out of the straight groove 1202, the bump on the rotating frame 8 enters the first arc-shaped groove 1201, and the rotating frame 8 drives the second spiral plate 9 to rotate again, increasing the gap between the second spiral plate 9 and the first spiral plate 7 to form two flow channels. And the rotating frame 8 repeats the above process through the limiting plate 20 until the bump on the rotating frame 8 moves to the upper end of the first arc-shaped groove 1201, then the piston rod 11 stops moving downward and the rotating frame 8 stops rotating. After that, the steam flows through the two flow channels. Until the flow rate of the steam decreases, the piston rod 11 drives the parts thereon to move upward and reset under the push of the spring 17. The one-way valve in the water storage housing 10 opens, allowing water to enter the lower chamber of the water storage housing 10. The rotating frame 8 is reset again after passing through the limiting plate 20 under the action of the first arc-shaped groove 1201, the straight groove 1202 and the second arc-shaped groove 1203.

[0041] The above are only examples of the present invention and are not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the known prior art of those skilled in the art.

Claims

1. A steam-water separation structure of a steam generator, characterized in that: Included are: A shell (1), the shell (1) being connected to a drain pipe (2), an air intake pipe (3) and an exhaust pipe (4), a partition plate (5) being fixedly connected inside the shell (1), a guide pipe (6) being fixedly connected to the partition plate (5), and the guide pipe (6) passing through the partition plate (5); A first spiral plate (7) is fixedly connected to the outer side of the guide tube (6); the shell (1) and the partition plate (5) are both fixedly connected to the first spiral plate (7); and a plurality of vertical plates are fixedly connected between the partition plate (5) and the first spiral plate (7); a rotating frame (8) rotatably connected to the guide tube (6), the rotating frame (8) being fixedly connected to a second spiral plate (9), and the housing (1) and the guide tube (6) being rotatably connected to the second spiral plate (9); A water storage shell (10) is fixedly connected to the drainage pipe (2); the water storage shell (10) is slidably connected to a piston rod (11); a guide groove (12) is provided on the piston rod (11); and a protrusion sliding in the guide groove (12) is provided on the rotating frame (8); A power assembly is arranged on the piston rod (11) and is used to drive the piston rod (11) to move back and forth.

2. The steam-water separation structure of a steam generator according to claim 1, characterized in that: The center angle of the arc corresponding to the guide groove (12) on the horizontal plane projection is 180°.

3. The steam-water separation structure of a steam generator according to claim 1, characterized in that: The power assembly includes: A lifting shell (13) fixedly connected to the piston rod (11); A rotating shaft (14) is rotatably connected to the guide tube (6), the rotating shaft (14) being fixedly connected to circumferentially distributed blades (15), the blades (15) being located in the guide tube (6); Circumferentially distributed transmission rods (16) are all hinged to one end of the rotating shaft (14) close to the lifting shell (13); the transmission rods (16) are located inside the lifting shell (13); the transmission rods (16) are used to push the lifting shell (13) to move; and a drainage hole is provided at the bottom of the lifting shell (13); A spring (17) fixedly connected between the piston rod (11) and the water storage shell (10); A position limiting component is arranged on the water storage shell (10) and is used to fix the position of the rotating frame (8).

4. The steam-water separation structure of a steam generator according to claim 3, characterized in that: The inner side of the lifting shell (13) is a frustum surface, and the diameter of the upper side of the frustum surface is greater than the diameter of the lower side.

5. The steam-water separation structure of a steam generator according to claim 3, characterized in that: One end of the transmission rod (16) away from the rotating shaft (14) is rotatably connected to a rotating wheel (18).

6. The steam-water separation structure of a steam generator according to claim 3, characterized in that: The limit assembly includes: A liquid separation plate (19) is fixedly connected to the water storage shell (10), the liquid separation plate (19) is slidably connected to the piston rod (11), and the rotating frame (8) is rotatably connected to the liquid separation plate (19); The symmetrically distributed limiting plates (20) are all fixedly connected to the liquid separation plate (19), and the limiting plates (20) are used to limit the position of the rotating frame (8).

7. The steam-water separation structure of a steam generator according to claim 6, characterized in that: The limiting plate (20) is provided with a first limiting surface (2001) and a second limiting surface (2002), the second limiting surface (2002) being located on opposite sides of the limiting plate (20) which are symmetrically distributed, and the angle between the first limiting surface (2001) and the horizontal plane is greater than the angle between the second limiting surface (2002) and the horizontal plane.

8. The steam-water separation structure of a steam generator according to claim 6, characterized in that: Also included are: A drainage component is arranged on the first spiral plate (7) and is used to transport water between the contact surfaces of the first spiral plate (7) and the second spiral plate (9), the drainage component comprising: The drainage shell (21) is fixedly connected to the vertical plate of the first spiral plate (7). The lower part of the water storage shell (10) is provided with a through hole, in which a one-way valve is provided. A connecting pipe (22) is connected between the water storage shell (10) and the drainage shell (21).

9. The steam-water separation structure of a steam generator according to claim 8, characterized in that: The guide groove (12) is composed of a first arc-shaped groove (1201), a straight groove (1202) and a second arc-shaped groove (1203), and the straight groove (1202) is located between the first arc-shaped groove (1201) and the second arc-shaped groove (1203), and the center angle of the arc corresponding to the projection of the first arc-shaped groove (1201) on the horizontal plane is greater than the center angle of the arc corresponding to the projection of the second arc-shaped groove (1203) on the horizontal plane.

10. The steam-water separation structure of a steam generator according to claim 8, characterized in that: The lower part of the drainage shell (21) is provided with evenly distributed flow guide pipes, and the flow area of ​​all the flow guide pipes increases as the distance between them and the guide pipe (6) increases. All the flow guide pipes on the drainage shell (21) are gradually inclined in a direction away from the guide pipe (6) from top to bottom.

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