Method for manufacturing a nuclear power bypass diffusion device

Abstract

This application relates to the field of machinery and equipment, and discloses a manufacturing method of a nuclear power bypass diffusion device. In this application, it includes a condenser body, a first housing, a second housing, and a heat dissipation mechanism. A hot well barrel is arranged in the middle end of the condenser body. An inclined plate is arranged on the left side of the hot well barrel. The outer end of the inclined plate is welded to the inner wall of the condenser body. An inspection manhole is arranged at the upper end of the condenser body. Through the hot well barrel inside the condenser body, the heat dissipation serpentine tube and the silencing fins inside the hot well barrel are preferentially welded. After welding, the whole is polished and beautified by grinding. After grinding, the hot well barrel is placed into the condenser body through the second housing for welding. When the hot well barrel is installed, the second housing and the condenser body are then welded. After that, the second housing and the heat dissipation mechanism are installed. At the same time, when in use, water source can be transported into the condenser body through the first water inlet pipe and the water inlet control valve.

Description

Technical Field

[0001] This application belongs to the technical field of machinery and equipment, and specifically relates to a manufacturing method of a nuclear power bypass diffusion device. Background Art

[0002] The condenser (the structure is shown in Figure 1 ) is one of the most important auxiliary equipment of the steam turbine. Its main function is to condense the steam discharged from the steam turbine by using circulating cooling water, establish and maintain the required vacuum in the steam exhaust space of the steam turbine, and recover pure condensate water for boiler feed water; in order to improve the economy of the steam turbine device, higher and higher requirements are put forward for modern condensers: the condenser should have a higher heat transfer coefficient to ensure good heat transfer effect; make the steam turbine have a lower operating back pressure under certain conditions, and improve the thermal efficiency of the steam power plant.

[0003] After retrieving the patent document of CN 118129496 A, a condenser for a steam turbine generator is disclosed, including a condenser body. The top end of the condenser body is communicated with an air inlet, the bottom end of the condenser body is communicated with a second water outlet, a first sealing cover is fixedly installed at one end on the right side of the condenser body, a second sealing cover is fixedly installed at one end on the left side of the condenser body, and a plurality of straight pipes are arranged inside the condenser body. Both ends of the plurality of straight pipes are respectively communicated with the first sealing cover and the second sealing cover. In the present invention, when the fixed rod rotates, it controls the rotation of the reciprocating screw rod. When the reciprocating screw rod rotates, it drives the scraper to move horizontally back and forth. When the scraper moves, the impurities covering the outer wall of the straight pipe are scraped off by the scraping blade, avoiding the influence of heat conduction caused by impurities covering the outer wall of the straight pipe, so as to achieve the purpose of easy cleaning.

[0004] However, through the exploration of the inventor, it is found that this technical solution still has at least the following defects:

[0005] The welding and assembly of this device not only have complex processes, but also have low manufacturing efficiency and economy. Especially in terms of heat treatment, due to the relatively airtight structure, it will be put into the furnace multiple times according to the traditional assembly method, which does not meet the requirements of cost reduction and efficiency increase of each factory. Summary of the Invention

[0006] The purpose of this application is to provide a manufacturing method of a nuclear power bypass diffusion device in order to solve the above-mentioned problems.

[0007] The technical solution adopted by this application is as follows: A nuclear power bypass diffusion device includes a condenser body. A second housing is provided on the right side of the condenser body, a first housing is provided on the left side of the condenser body, a heat dissipation mechanism is provided on the left side of the first housing, an air outlet pipe control valve is provided at the junction of the heat dissipation mechanism and the first housing, a hot well bucket is provided in the middle of the condenser body, an inclined plate is provided on the left side of the hot well bucket, the outer end of the inclined plate is welded to the inner wall of the condenser body, and a maintenance manhole is provided at the upper end of the condenser body.

[0008] By adopting the above technical solution, through the hot well bucket inside the condenser body, the heat dissipation serpentine pipe and the silencing fins inside the hot well bucket are preferentially welded. After welding, the whole is beautifully polished by grinding. After grinding, the hot well bucket is placed into the inside of the condenser body through the second housing for welding. When the hot well bucket is installed, the second housing and the condenser body are then welded, and then the first housing and the heat dissipation mechanism are installed. At the same time, when in use, water can be conveyed into the inside of the condenser body through the first water inlet pipe and the water inlet pipe control valve.

[0009] In a preferred embodiment, a flange plate and multiple groups of flange bolts are provided at the upper end of the maintenance manhole, multiple groups of heat exchange pipes are provided inside the hot well bucket, an installation strip is clamped at the outer end of the heat exchange pipe, and the outer end of the installation strip is welded to the inner wall of the hot well bucket.

[0010] By adopting the above technical solution, the maintenance manhole can be opened and closed through the flange plate and the flange bolts, which is convenient for personnel to enter the inside for maintenance.

[0011] In a preferred embodiment, the condenser body includes a housing body, a condenser inner liner is welded to the inner wall of the housing body, and a condenser hollow barrel is fixedly connected to the inner wall of the condenser inner liner.

[0012] By adopting the above technical solution, through the gap between the condenser inner liner and the condenser hollow barrel, the water flow on the inner wall of the condenser body can be heated.

[0013] In a preferred embodiment, multiple groups of heating blocks are provided at the junction of the hot well bucket and the condenser inner liner, multiple groups of first water inlet pipes are provided at the outer end of the first housing, and a water inlet pipe control valve is provided inside the first water inlet pipe.

[0014] By adopting the above technical solution, the water flow inside the hot well bucket can be heated and controlled through the heating blocks.

[0015] In a preferred embodiment, the first water inlet pipe penetrates through the inner wall of the condenser body and is fixedly connected to an inner pipe, the end of the inner pipe away from the first water inlet pipe is fixedly connected to a first water outlet pipe, and a valve is provided inside the first water outlet pipe.

[0016] By adopting the above technical solution, the flow rate of water entering the inside of the condenser body is controlled by a valve.

[0017] In a preferred embodiment, the right side of the heat dissipation mechanism is welded to the left side of the first housing, and a sealing ring is welded at the junction of the first housing and the outlet air duct control valve. The junction of the sealing ring, the first housing and the outlet air duct control valve is formed by grinding and welding.

[0018] By adopting the above technical solution, oxide and impurities generated during the welding process can be removed by grinding and welding, thereby improving the strength and aesthetics of the weld.

[0019] In a preferred embodiment, one end of the first water inlet pipe away from the water inlet control valve is fixedly connected to a second water outlet pipe. Multiple fixing blocks are fixedly connected to the upper end of the second water outlet pipe, and the upper ends of the fixing blocks are fixedly connected to the outer end of the condenser body.

[0020] By adopting the above technical solution, the fixing blocks can strengthen the connection of the second water outlet pipe.

[0021] In a preferred embodiment, an inner nano-ceramic tube core is arranged inside the second water outlet pipe, and a second valve is arranged at the outer end of the left side of the inner nano-ceramic tube core.

[0022] By adopting the above technical solution, the inner nano-ceramic tube core is made of nano-level ceramic particles, making it have extremely high strength and durability and a long service life.

[0023] In a preferred embodiment, multiple heat dissipation serpentine tubes and sound-absorbing fins are arranged inside the heat dissipation mechanism.

[0024] By adopting the above technical solution, the sound-absorbing fins are made of sound-absorbing materials, which can absorb sound waves and convert them into heat, thereby reducing the noise level, and the heat dissipation serpentine tubes transfer heat to the air.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0026] It has the advantages of improving production efficiency, reducing the production cycle, and eliminating the need for tooling except for necessary ribs during production, thereby reducing production costs. It is connected by welding, and the welding method steps are: argon arc welding for backing, gas shielded welding for surfacing, and cleaning the weld after welding;

[0027] In this application, through the hot well barrel inside the condenser body, the heat dissipation serpentine pipe and the silencing fins inside the hot well barrel are preferentially welded. After welding, the whole is polished and beautified by grinding. After grinding, the hot well barrel is placed into the inside of the condenser body through the second housing for welding. When the hot well barrel is installed, the second housing and the condenser body are then welded. Subsequently, the first housing and the heat dissipation mechanism are installed. At the same time, when in use, water source can be transported into the inside of the condenser body through the first water inlet pipe and the water inlet control valve. Through the cooperation of the above structures, the components can be separately integrated and then installed, thereby improving the manufacturing efficiency during welding, reducing the production cycle and production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall external shape of the equipment of this application;

[0029] Figure 2 In this application Figure 1 is a schematic diagram of the right internal structure view;

[0030] Figure 3 In this application Figure 1 is a schematic diagram of the right view structure;

[0031] Figure 4 In this application Figure 1 is a schematic diagram of the top view structure;

[0032] Figure 5 In this application Figure 1 is a schematic diagram of the internal view structure;

[0033] Figure 6 is a schematic diagram of the structure of the first water inlet pipe and the water inlet control valve in this application;

[0034] Figure 7 is a schematic diagram of the detailed dispersed structure in this application.

[0035] Markings in the figure: 1. Heat dissipation mechanism; 2. Outlet air pipe control valve; 3. First housing; 4. Condenser body; 5. Water inlet control valve; 6. First water inlet pipe; 7. Second housing; 8. Second outlet pipe; 9. Inner pipe; 10. Valve; 11. First outlet pipe; 12. Condenser inner liner; 13. Condenser hollow barrel; 14. Heating block; 15. Inclined plate; 16. Hot well barrel; 17. Second valve; 18. Fixed block; 19. Inner nano-ceramic pipe core; 20. Sealing ring; 21. Maintenance manhole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0037] Embodiment:

[0038] Referring to Figures 1-7 , a manufacturing method of a nuclear power bypass diffusion device includes a condenser body 4. A second housing 7 is arranged on the right side of the condenser body 4, a first housing 3 is arranged on the left side of the condenser body 4, a heat dissipation mechanism 1 is arranged on the left side of the first housing 3, and an air outlet pipe control valve 2 is arranged at the junction of the heat dissipation mechanism 1 and the first housing 3. A hot well barrel 16 is arranged in the middle of the condenser body 4, a sloping plate 15 is arranged on the left side of the hot well barrel 16, and the outer end of the sloping plate 15 is welded to the inner wall of the condenser body 4. An inspection manhole 21 is arranged at the upper end of the condenser body 4. Through the hot well barrel 16 inside the condenser body 4, the heat dissipation serpentine pipes and silencing fins inside the hot well barrel 16 are preferentially welded. After welding, the whole is polished and beautified by grinding. After grinding, the hot well barrel 16 is placed into the condenser body 4 through the second housing 7 for welding. When the hot well barrel 16 is installed, the second housing 7 and the condenser body 4 are then welded. Subsequently, the first housing 3 and the heat dissipation mechanism 1 are installed. At the same time, when in use, water can be supplied to the inside of the condenser body 4 through a first water inlet pipe 6 and a water inlet control valve 5.

[0039] Referring to Figures 1-7 , a flange plate and multiple groups of flange bolts are arranged at the upper end of the inspection manhole 21. Multiple groups of heat exchange pipes are arranged inside the hot well barrel 16. Installation strips are clamped at the outer ends of the heat exchange pipes, and the outer ends of the installation strips are welded to the inner wall of the hot well barrel 16. The inspection manhole 21 can be opened and closed through the flange plate and flange bolts, facilitating personnel to enter the interior for maintenance.

[0040] Referring to Figures 1-7 , the condenser body 4 includes a housing body, a condenser inner liner 12 is welded to the inner wall of the housing body, and a condenser hollow barrel 13 is fixedly connected to the inner wall of the condenser inner liner 12. Through the gap between the condenser inner liner 12 and the condenser hollow barrel 13, the water flow on the inner wall of the condenser body 4 can be heated.

[0041] Referring to Figures 1-7 , multiple groups of heating blocks 14 are arranged at the junction of the hot well barrel 16 and the condenser inner liner 12. Multiple groups of first water inlet pipes 6 are arranged at the outer end of the first housing 3, and a water inlet control valve 5 is arranged inside the first water inlet pipe 6. The water flow inside the hot well barrel 16 can be heated and controlled through the heating blocks 14.

[0042] Refer to Figures 1-7 As shown in Figures 1-7 , a water inlet pipe 6 penetrates through the inner wall of the condenser body 4 and is fixedly connected to an inner pipe 9. One end of the inner pipe 9 far from the water inlet pipe 6 is fixedly connected to a water outlet pipe 11. A valve 10 is arranged inside the water outlet pipe 11 to control the flow rate of the water entering the condenser body 4 through the valve 10.

[0043] Refer to Figures 1-7 As shown in Figures 1-7 , the right side of the heat dissipation mechanism 1 is welded to the left side of the first housing 3. A sealing ring 20 is welded at the junction of the first housing 3 and the air outlet pipe control valve 2. The sealing ring 20 at the junction of the first housing 3 and the air outlet pipe control valve 2 is welded by a grinder. By grinding and welding, oxides and impurities generated during the welding process can be removed, thereby improving the strength and aesthetics of the weld.

[0044] Refer to Figures 1-7 As shown in Figures 1-7 , one end of the water inlet pipe 6 far from the water inlet control valve 5 is fixedly connected to a water outlet pipe 8. Multiple fixing blocks 18 are fixedly connected to the upper end of the water outlet pipe 8. The upper end of the fixing blocks 18 is fixedly connected to the outer end of the condenser body 4. The fixing blocks 18 can strengthen the connection of the water outlet pipe 8.

[0045] Refer to Figures 1-7 As shown in Figures 1-7 , an inner nano-ceramic tube core 19 is arranged inside the water outlet pipe 8. A valve two 17 is arranged at the outer end of the left side of the inner nano-ceramic tube core 19. The inner nano-ceramic tube core 19 is made of nano-level ceramic particles, making it have extremely high strength and durability and a long service life.

[0046] Refer to Figures 1-7 As shown in Figures 1-7 , multiple heat dissipation serpentine pipes and sound-absorbing fins are arranged inside the heat dissipation mechanism 1. The sound-absorbing fins are made of sound-absorbing materials and can absorb sound waves and convert them into heat, thereby reducing the noise level. The heat dissipation serpentine pipes transfer heat to the air.

[0047] The implementation principle of the embodiment of the manufacturing method of a nuclear power bypass diffusion device in this application is:

[0048] During manufacturing, the heat dissipation serpentine pipe and the sound-absorbing fins inside the hot well bucket 16 can be preferentially welded inside the condenser body 4 through the hot well bucket 16. After welding, the whole is polished beautifully by grinding. After grinding, the hot well bucket 16 is placed inside the condenser body 4 through the second housing 7 for welding. After the hot well bucket 16 is installed, the second housing 7 and the condenser body 4 are welded. Then, the first housing 3 and the heat dissipation mechanism 1 are installed. At the same time, during use, water can be transported into the interior of the condenser body 4 through the first water inlet pipe 6 and the water inlet control valve 5. At the same time, the water treated by the hot well bucket 16 can be discharged through the second water outlet pipe 8. At the same time, when it is necessary to detect the hot well bucket 16 and replace the internal components of the hot well bucket 16, the components can be transported through the maintenance manhole 21. At the same time, during use, the maintenance manhole 21 can be opened and closed by the flange and the flange bolt, facilitating personnel to enter the interior for maintenance; through the cooperation of the above structures, the components can be separately integrated and then installed, thereby improving the manufacturing efficiency during welding, reducing the production cycle and production costs.

[0049] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A nuclear power bypass diffusion device, characterized in that: The nuclear power bypass diffusion device comprises: a condenser body (4), a second cover shell (7) is arranged on the right side of the condenser body (4), a first cover shell (3) is arranged on the left side of the condenser body (4), a heat dissipation mechanism (1) is arranged on the left side of the first cover shell (3), an air outlet pipe control valve (2) is arranged at the intersection of the heat dissipation mechanism (1) and the first cover shell (3), a hot well barrel (16) is arranged at the middle end of the condenser body (4), an inclined plate (15) is arranged on the left side of the hot well barrel (16), the outer end of the inclined plate (15) is welded to the inner wall of the condenser body (4), and an inspection manhole (21) is arranged at the upper end of the condenser body (4); The method for manufacturing a nuclear power bypass diffusion device comprises the following steps: S1: The heat well barrel (16) and the inclined plate (15) are assembled and welded, and then a plurality of groups of heat exchange tubes and mounting strips are fixed, and then the assembled heat exchange tubes are installed into the interior of the heat well barrel (16) through the openings on both sides of the heat well barrel (16); S2: placing the welded hot well barrel (16) and the inclined plate (15) from the right side of the condenser body (4) into the inner wall for welding; S3: The second cover shell (7) is fixed to the first cover shell (3) and the two ends of the condenser body (4) by welding, and then the inspection manhole (21) is installed to the upper end of the condenser body (4). After installation, the upper end of the inspection manhole (21) is sealed by a flange plate and a plurality of sets of flange bolts; S4: Place the water inlet pipe 1 (6) away from the inner pipe (9) into the outer end of the condenser body (4), weld the inner pipe (9) and the water inlet pipe 1 (6), and then weld the water inlet pipe 1 (6) and the condenser body (4), and clean and polish after welding; S5: Afterwards, the cylinder installation parts are partially calibrated through the cylinder holes and parts orientation diagram, the misalignment is ≤2mm, and the process ties are arranged by spot welding at appropriate positions on the circumferential welds; the M-shaped process tie bars are installed and welded at a distance of 100mm from the weld position in the cylinder, and then the dimensions are checked to be qualified, and then welding is carried out as required, and the spot welds are polished; S6: The heat dissipation mechanism (1) and the left side of the first cover shell (3) are installed, and after the installation, the entire device is coated with intermediate paint, topcoat, and touch-up paint.

2. A nuclear power bypass diffusion device as claimed in claim 1, characterized in that: The upper end of the inspection manhole (21) is provided with a flange and a plurality of sets of flange bolts, and the interior of the hot well barrel (16) is provided with a plurality of sets of heat exchange tubes, the outer ends of the heat exchange tubes are clamped with mounting strips, and the outer ends of the mounting strips are welded to the inner wall of the hot well barrel (16).

3. A nuclear power bypass diffusion device as claimed in claim 1, characterized in that: The condenser body (4) comprises an outer shell, the inner wall of which is welded a condenser liner (12), and the inner wall of the condenser liner (12) is fixedly connected to a condenser hollow barrel (13).

4. A nuclear power bypass diffusion device as claimed in claim 3, characterized in that: A plurality of groups of heating blocks (14) are arranged at the junction of the hot well barrel (16) and the condenser inner tank (12), and a plurality of groups of water inlet pipes (6) are arranged on the left and right sides of the outer end of the first cover shell (3), and a water inlet pipe control valve (5) is arranged inside the water inlet pipe (6).

5. A nuclear power bypass diffusion device as claimed in claim 4, characterized in that: The water inlet pipe (6) passes through the inner wall of the condenser body (4) and is fixedly connected to an inner pipe (9); an end of the inner pipe (9) away from the water inlet pipe (6) is fixedly connected to a water outlet pipe (11); a valve (10) is provided inside the water outlet pipe (11).

6. A nuclear power bypass diffusion device as claimed in claim 1, characterized in that: The right side of the heat dissipation mechanism (1) is welded to the left side of the first cover shell (3), and a sealing ring (20) is welded at the intersection of the first cover shell (3) and the air outlet duct control valve (2). The sealing ring (20) and the intersection of the first cover shell (3) and the air outlet duct control valve (2) are welded by grinding with a grinder.

7. A nuclear power bypass diffusion device as claimed in claim 4, characterized in that: One end of the water inlet pipe 1 (6) away from the water inlet pipe control valve (5) is fixedly connected to the water outlet pipe 2 (8), the upper end of the water outlet pipe 2 (8) is fixedly connected to a plurality of sets of fixing blocks (18), and the upper ends of the fixing blocks (18) are fixedly connected to the outer ends of the condenser body (4).

8. A nuclear power bypass diffusion device as claimed in claim 7, characterized in that: An inner nano-ceramic tube core (19) is arranged inside the second water outlet pipe (8), and a second valve (17) is arranged at the left outer end of the inner nano-ceramic tube core (19).

9. A nuclear power bypass diffusion device as claimed in claim 1, characterized in that: The heat dissipation mechanism (1) is internally provided with a plurality of groups of heat dissipation serpentine tubes and silencer fins.

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