Nuclear power sealing flange

Abstract

The utility model relates to the technical field of nuclear power flanges, in particular to a nuclear power sealing flange which comprises a flange pipe, filter screens are fixedly connected to the upper side and the lower side in the flange pipe, a rotating shaft is rotatably connected between the two filter screens, and fixing rods are rotatably connected to the upper side and the lower side of the outer side face of the rotating shaft. The middle of the outer side face of the rotating shaft is fixedly connected with a fixing block, the outer side face of the fixing block is fixedly connected with fan blades, the bottom end and the top end of the rotating shaft are fixedly connected with scrapers, the left end and the right end of a fixing rod are fixedly connected with the flange pipe, and the outer sides of the scrapers make contact with the inner side of the filter screen; through design cooperation, when liquid passes through the filter screen in the flange pipe, the liquid is filtered, meanwhile, the fan blades rotate under the action of the liquid and drive the fixing block and the rotating shaft to rotate, the rotating shaft drives the scraping plate to rotate, residual filter residues on the filter screen are cleaned, attachment of the filter residues on the filter screen is reduced, and the flange pipe is kept smooth while the liquid is filtered.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power flanges, in particular to a nuclear power closed flange. Background Art

[0002] Sealing flange, also known as flange connection or flange joint, is a pipe connector, mainly used for the connection and sealing of two pipes, valves, pumps or other equipment in a pipeline system. It is mainly composed of a flange plate and corresponding sealing elements.

[0003] The patent specification with announcement number CN216158539U discloses an austenitic stainless steel flange for nuclear power, "including a flange pipe, a first flange plate and a second flange plate, one end of the flange pipe is fixedly sleeved with the first flange plate, and the other end of the flange pipe is fixedly sleeved with the second flange plate, the first flange plate and the second flange plate are arranged in parallel with each other, the first flange plate and the second flange plate are both provided with a first groove on the side away from the flange pipe, and the first groove is provided with a second groove on the inner wall on the side close to the flange pipe, a sealing assembly is installed in the first groove and the second groove, the sealing assembly includes a mounting piece, a first retaining ring and a second retaining ring, the mounting piece, the first retaining ring and the second retaining ring are all annular structures, the first retaining ring and the second retaining ring are fixedly connected to the two sides of the mounting piece respectively, and the mounting piece, the first retaining ring and the second retaining ring are arranged in parallel with each other. It has the advantages of good sealing performance and also has the function of filtering, and is easy to promote."

[0004] However, in the implementation of relevant technologies, it is found that the austenitic stainless steel flange for nuclear power has the following problems: when the first filter screen and the second filter screen filter the liquid in the flange pipe, filter residues will remain on the first filter screen and the second filter screen. After a period of use, a large amount of filter residues may accumulate on the filter screen, thereby increasing the impact of the liquid on the filter screen and shortening its service life. In view of this, a nuclear power sealed flange is provided to overcome the above defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a nuclear power sealed flange.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nuclear power closed flange, including a flange pipe, wherein filter screens are fixedly connected to the upper and lower sides of the flange pipe, a rotating shaft is rotatably connected between the two filter screens, a fixing rod is rotatably connected to the upper and lower sides of the outer side surface of the rotating shaft, a fixing block is fixedly connected to the middle of the outer side surface of the rotating shaft, a fan blade is fixedly connected to the outer side surface of the fixed block, and a scraper is fixedly connected to the bottom and top ends of the rotating shaft.

[0007] As a further description of the above technical solution: the left and right ends of the fixed rod are fixedly connected to the flange pipe, and the outer side of the scraper is in contact with the inner side of the filter screen. Through design and coordination, when the liquid passes through the flange pipe, under the action of the liquid, the fan blades rotate and drive the rotating shaft to rotate. The rotating shaft drives the scraper to rotate and clean the residual filter residue on the filter screen, reducing the adhesion of the filter residue on the filter screen, thereby achieving liquid filtration while keeping the flange pipe unobstructed.

[0008] As a further description of the above technical solution: the number of the fan blades is six, and the fan blades are evenly distributed on the outer side of the fixed block. The fan blades are inclined, and the inclined surface of the fan blades is inclined downward clockwise. The inclination angle of the fan blades is fifteen degrees, so that when water flows through the fan blades, it can drive the fan blades to rotate, and then drive the rotating shaft and the scrapers at both ends of the rotating shaft to rotate to clean the filter.

[0009] As a further description of the above technical solution: there is a circular ring in the middle of the two fixed rods, and the rotating shaft passes through the circular ring of the fixed rod and is rotatably connected to the circular ring. The position of the rotating shaft is fixed by the two fixed rods, so that the shaking of the rotating shaft is reduced when the fan blades rotate.

[0010] As a further description of the above technical solution: a first flange is fixedly connected to the top of the flange pipe, a connecting seat is fixedly connected to the middle of the top of the first flange, a gasket is arranged on the top of the connecting seat, a second flange is arranged on the top of the gasket, a clamp is arranged on the upper outer side of the first flange, a gasket is arranged on the inner side of the clamp, and a nut is spirally connected to the right side of the clamp. Through design and coordination, the limit block at the top of the connecting seat interacts with the limit groove at the bottom of the second flange, and the first flange and the second flange can also be tightly attached in a natural state, thereby reducing the tension on the fixing bolts on the flange and increasing the overall stability of the flange. At the same time, clamps are arranged on the outside of the first flange and the second flange for sealing to avoid internal liquid leakage due to aging of the internal gasket.

[0011] As a further description of the above technical solution: the second flange has a circular groove at the bottom, and the inner diameter of the circular groove is consistent with the outer diameter of the connecting seat, and the gasket is consistent with the transverse cross-section of the top of the connecting seat, so that the first flange and the second flange can be in close contact without external force.

[0012] As a further description of the above technical solution: six limit grooves are evenly arranged inside the circular groove at the bottom end of the second flange, and six limit blocks are evenly arranged on the upper outer side of the connecting seat, and the limit blocks are slidably connected to the limit grooves, so that the upper limit block of the connecting seat can be limited in movement by the limit grooves, so that the first flange and the second flange can be stably connected under normal conditions, reducing the tension on the fixing bolts.

[0013] The utility model has the following beneficial effects:

[0014] The utility model designs a nuclear power closed flange. Through design and coordination, when the liquid passes through the filter screen inside the flange pipe, the liquid is filtered. At the same time, the fan blades rotate under the action of the liquid and drive the fixed block and the rotating shaft to rotate. The rotating shaft drives the scraper to rotate, and the residual filter residue on the filter screen is cleaned to reduce the adhesion of the filter residue on the filter screen, thereby achieving the filtration of the liquid while keeping the flange pipe unobstructed.

[0015] The utility model designs a nuclear power closed flange. Through design coordination, the limiting block at the top of the connecting seat interacts with the limiting groove at the bottom of the second flange. The first flange and the second flange can also be tightly attached in a natural state, thereby reducing the tension on the fixing bolts on the flange and increasing the overall stability of the flange. At the same time, clamps are arranged on the outside of the first flange and the second flange for sealing to avoid leakage of internal liquid due to aging of internal gaskets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the flange pipe of the utility model;

[0018] Figure 3 This is a schematic diagram of the explosion structure of the first flange of the utility model;

[0019] Figure 4 It is a schematic diagram of the longitudinal cross-sectional structure of the first flange of the utility model;

[0020] Figure 5 This is a schematic diagram of the second flange structure of the utility model.

[0021] Legend:

[0022] 1. Flange pipe; 2. Filter; 3. Rotating shaft; 4. Fixing rod; 5. Fixing block; 6. Fan blade; 7. Scraper; 8. First flange; 9. Connecting seat; 10. Gasket; 11. Second flange; 12. Washer; 13. Clamp; 14. Nut. DETAILED DESCRIPTION

[0023] Reference Figures 1 to 5 The utility model provides a nuclear power closed flange, including a flange pipe 1, a filter screen 2 is fixed by bolts on the upper and lower sides of the flange pipe 1, a rotating shaft 3 is rotatably connected between the two filter screens 2 through a bearing, and the upper and lower sides of the outer side of the rotating shaft 3 are rotatably connected to a fixing rod 4 through a bearing, the middle of the outer side of the rotating shaft 3 is welded and fixed to the inner side of a fixing block 5, a fan blade 6 is welded and fixed on the outer side of the fixing block 5, and a scraper 7 is fixed to the bottom and top of the rotating shaft 3 by a clamp.

[0024] As a further implementation plan of the above technical solution: the left and right ends of the fixing rod 4 are welded and fixed to the flange pipe 1, and the outer side of the scraper 7 contacts the inner side of the filter screen 2. Through design and coordination, when the liquid passes through the flange pipe 1, under the action of the liquid, the fan blade 6 rotates and drives the rotating shaft 3 to rotate, and the rotating shaft 3 drives the scraper 7 to rotate and clean the residual filter residue on the filter screen 2, thereby reducing the adhesion of the filter residue on the filter screen 2, thereby achieving filtration of the liquid while keeping the flange pipe 1 unobstructed.

[0025] As a further implementation scheme of the above technical scheme: the number of fan blades 6 is six, and the fan blades 6 are evenly distributed on the outer side of the fixed block 5. The fan blades 6 are inclined, and the inclined surface of the fan blades 6 is inclined downward clockwise. The inclination angle of the fan blades 6 is fifteen degrees, so that when water flows through the fan blades 6, it can drive the fan blades 6 to rotate, and then drive the rotating shaft 3 and the scrapers 7 at both ends of the rotating shaft 3 to rotate, so as to clean the filter 2.

[0026] As a further implementation scheme of the above technical scheme: a circular ring is formed in the middle of the two fixed rods 4, and the rotating shaft 3 passes through the circular ring of the fixed rods 4 and is rotatably connected to the circular ring. The position of the rotating shaft 3 is fixed by the two fixed rods 4, so that the shaking of the rotating shaft 3 is reduced when the rotating shaft 3 rotates with the fan blades 6.

[0027] As a further implementation plan of the above technical scheme: the first flange 8 is welded and fixed at the top of the flange pipe 1, the connecting seat 9 is welded and fixed in the middle of the top of the first flange 8, a gasket 10 is arranged on the top of the connecting seat 9, and a second flange 11 is arranged on the top of the gasket 10. A clamp 13 is arranged on the upper outer side of the first flange 8, a gasket 12 is arranged on the inner side of the clamp 13, and a nut 14 is spirally connected to the right side of the clamp 13. Through design coordination, the limit block at the top of the connecting seat 9 interacts with the limit groove at the bottom of the second flange 11, and the first flange 8 and the second flange 11 can also be tightly attached in a natural state, thereby reducing the tension on the fixing bolts on the flange and increasing the overall stability of the flange. At the same time, clamps 13 are arranged on the outside of the first flange 8 and the second flange 11 for sealing to avoid internal liquid leakage due to aging of the internal gasket 10.

[0028] As a further implementation scheme of the above technical scheme: a circular groove is formed at the bottom end of the second flange 11, and the inner diameter of the circular groove is consistent with the outer diameter of the connecting seat 9, and the gasket 10 is consistent with the transverse cross-section of the top end of the connecting seat 9, so that the first flange 8 and the second flange 11 can be in close contact even without external force.

[0029] As a further implementation scheme of the above technical scheme: six limit grooves are evenly arranged inside the circular groove at the bottom end of the second flange 11, and six limit blocks are evenly arranged above the outer side surface of the connecting seat 9, and the limit blocks are slidably connected to the limit grooves, so that the upper limit block of the connecting seat 9 can be limited in movement by the limit grooves, so that the first flange 8 and the second flange 11 can be stably connected under normal conditions, reducing the tension on the fixing bolts.

[0030] During specific implementation: during installation, place the gasket and the connecting seat into the second flange along the limiting groove at the bottom end of the second flange, and rotate the first flange clockwise so that the limiting block at the top end of the connecting seat is engaged with the limiting groove, thereby realizing simple fixation of the first flange and the second flange. The first flange and the second flange are further fixed by a number of fixing bolts to ensure overall airtightness. The gasket is fixed at the gap between the first flange and the second flange by a clamp, and the clamp and the gasket are tightly fitted to the gap by a nut. When the gasket causes liquid to leak out due to aging, the overall airtightness can still be ensured by the gasket. During normal use, the fan blades inside the flange tube rotate under the action of the flowing liquid, and drive the fixed block and the rotating shaft to rotate. Since the two ends of the two fixing rods are fixed to the inner wall of the flange tube, the rotating shaft is guaranteed to be stable when it rotates. The rotating shaft drives the scrapers at both ends to rotate, clean the filter screens on both sides, reduce the residue remaining on the filter screen, and ensure the normal circulation of the liquid.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nuclear power sealed flange, comprising a flange pipe (1), characterized in that: The flange pipe (1) is fixedly connected to filter screens (2) at both upper and lower sides, the filter screens (2) are rotatably connected to a rotating shaft (3), the outer side surfaces of the rotating shaft (3) are rotatably connected to fixing rods (4) at both upper and lower sides, a fixing block (5) is fixedly connected to the middle of the outer side surface of the rotating shaft (3), the outer side surface of the fixing block (5) is fixedly connected to a fan blade (6), and the bottom and top ends of the rotating shaft (3) are fixedly connected to scrapers (7).

2. A nuclear power sealed flange according to claim 1, characterized in that: The left and right ends of the fixed rod (4) are fixedly connected to the flange pipe (1), and the outer side of the scraper (7) is in contact with the inner side of the filter screen (2).

3. A nuclear power sealed flange according to claim 1, characterized in that: The number of the fan blades (6) is six, and the fan blades (6) are evenly distributed on the outer side of the fixed block (5). The fan blades (6) are inclined surfaces, and the inclined surfaces of the fan blades (6) are inclined clockwise and downward, and the inclination angles of the fan blades (6) are all fifteen degrees.

4. A nuclear power sealed flange according to claim 1, characterized in that: The middle shape of the fixing rod (4) is a circular ring, and the rotating shaft (3) passes through the interior of the circular ring of the fixing rod (4) and is rotatably connected to the circular ring.

5. A nuclear power sealed flange according to claim 1, characterized in that: The top of the flange pipe (1) is fixedly connected to a first flange (8), the middle of the top of the first flange (8) is fixedly connected to a connecting seat (9), a gasket (10) is provided at the top of the connecting seat (9), a second flange (11) is provided at the top of the gasket (10), a clamp (13) is provided on the upper outer side of the first flange (8), a washer (12) is provided on the inner side of the clamp (13), and a nut (14) is spirally connected to the right side of the clamp (13).

6. A nuclear power sealed flange according to claim 5, characterized in that: The bottom end of the second flange (11) is a circular groove, and the inner diameter of the circular groove is consistent with the outer diameter of the connecting seat (9), and the gasket (10) is consistent with the transverse cross-section of the top end of the connecting seat (9).

7. A nuclear power sealed flange according to claim 6, characterized in that: Six limiting grooves are evenly arranged inside the circular groove at the bottom end of the second flange (11), and six limiting blocks are evenly arranged above the outer side surface of the connecting seat (9), and the limiting blocks are slidably connected to the limiting grooves.

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