Manufacturing method of nuclear power bypass diffusion device

Abstract

The invention relates to the field of machinery and equipment, and discloses a manufacturing method of a nuclear power bypass diffusion device. The condenser comprises a condenser body, a first housing, a second housing and a heat dissipation mechanism, a hot well barrel is arranged at 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, and an inspection manhole is formed in the upper end of the condenser body. The heat dissipation coiled pipe and the noise reduction fins in the hot well barrel are welded preferentially, the whole is beautified and polished through polishing after welding, then the hot well barrel is put into the condenser body through the second housing for welding after polishing, and after the hot well barrel is installed, the second housing and the condenser body are welded. And then a second housing and a heat dissipation mechanism are mounted, and meanwhile, during use, a water source can be conveyed to the interior of the condenser body through a first water inlet pipe and a water inlet pipe control valve.

Description

Technical Field

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

[0002] Condenser (structure see Figure 1 ) is one of the most important equipment in the auxiliary equipment of the steam turbine. Its main function is to use circulating cooling water to condense the steam discharged from the steam turbine, establish and maintain the required vacuum in the exhaust space of the steam turbine, and recover pure condensate 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] A condenser for a steam turbine generator is disclosed in the patent document of CN 118129496 A, including a condenser body, the top of the condenser body is connected to an air inlet, the bottom of the condenser body is connected to a second water outlet, a first sealing cover is fixedly installed on the right end of the condenser body, a second sealing cover is fixedly installed on the left end of the condenser body, and a plurality of straight pipes are arranged on the inner side of the condenser body, and the two ends of the plurality of straight pipes are respectively connected to the first sealing cover and the second sealing cover. In the present invention, when the fixed rod rotates, the reciprocating screw is controlled to rotate, and when the reciprocating screw rotates, the scraper is driven to move back and forth horizontally. When the scraper moves, the impurities covered on the outer wall of the straight pipe are scraped off by the scraper to prevent the impurities from covering the outer wall of the straight pipe and affecting the heat conduction, thereby achieving the purpose of easy cleaning.

[0004] However, the inventors have discovered that this technical solution still has at least the following defects:

[0005] The assembly and welding of this device is not only complicated, but also has low manufacturing efficiency and economy. Especially in terms of heat treatment, the traditional assembly method requires multiple furnace injections due to its relatively closed structure, which does not meet the requirements of various factories to reduce costs and increase efficiency. Summary of the invention

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

[0007] The technical solution adopted in the present application is as follows: a nuclear power bypass diffusion device, including a condenser body, a second cover shell is arranged on the right side of the condenser body, a first cover shell is arranged on the left side of the condenser body, a heat dissipation mechanism is arranged on the left side of the first cover shell, an air outlet pipe control valve is arranged at the junction of the heat dissipation mechanism and the first cover shell, a hot well barrel is arranged at 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, and an inspection manhole is arranged at the upper end of the condenser body.

[0008] By adopting the above technical scheme, the heat dissipation serpentine tube and the silencer fin inside the hot well barrel are first welded through the hot well barrel inside the condenser body, and the whole is beautified and polished after welding. After polishing, the hot well barrel is placed into the interior of the condenser body through the second cover shell for welding. After the hot well barrel is installed, the second cover shell and the condenser body are welded, and then the first cover shell and the heat dissipation mechanism are installed. At the same time, when in use, water can be transported to the interior of the condenser body through the water inlet pipe 1 and the water inlet pipe control valve.

[0009] In a preferred embodiment, a flange and multiple sets of flange bolts are provided at the upper end of the inspection manhole, multiple sets of heat exchange tubes are provided inside the hot well barrel, 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.

[0010] By adopting the above technical solution, the inspection manhole can be opened and closed by means of the flange and the flange bolts, so that personnel can enter the interior for inspection and maintenance.

[0011] In a preferred embodiment, the condenser body comprises an outer shell, the inner wall of the outer shell is welded with a condenser liner, and the inner wall of the condenser liner is fixedly connected with a condenser hollow barrel.

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

[0013] In a preferred embodiment, a plurality of heating blocks are arranged at the junction of the hot well barrel and the condenser inner tank, a plurality of left and right water inlet pipes are arranged at the outer end of the first cover, and a water inlet pipe control valve is arranged inside the water inlet pipe.

[0014] By adopting the above technical solution, the water flow inside the hot well barrel can be heated and controlled by the heating block.

[0015] In a preferred embodiment, the water inlet pipe 1 passes through the inner wall of the condenser body and is fixedly connected to an inner pipe, an end of the inner pipe away from the water inlet pipe 1 is fixedly connected to a water outlet pipe 1, and a valve is provided inside the water outlet pipe 1.

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

[0017] In a preferred embodiment, the right side of the heat dissipation mechanism is welded to the left side of the first cover shell, a sealing ring is welded at the junction of the first cover shell and the air outlet control valve, and the sealing ring and the junction of the first cover shell and the air outlet control valve are welded by grinding with a grinder.

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

[0019] In a preferred embodiment, one end of the water inlet pipe 1 away from the water inlet pipe control valve is fixedly connected to the water outlet pipe 2, the upper end of the water outlet pipe 2 is fixedly connected to multiple groups of fixed blocks, and the upper end of the fixed block is fixedly connected to the outer end of the condenser body.

[0020] By adopting the above technical solution, the fixing block can reinforce the connection of the water outlet pipe 2.

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

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

[0023] In a preferred embodiment, a plurality of groups of heat dissipation serpentine tubes and silencer fins are arranged inside the heat dissipation mechanism.

[0024] By adopting the above technical solution, the silencer fins are made of sound-absorbing material, which can absorb sound waves and convert them into heat, thereby reducing the noise level, and the heat dissipation serpentine pipe transfers the 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 production cycle, and reducing production cost. Except for the necessary reinforcement, no tooling is needed in production, and the production cost is reduced. It is connected by welding. The welding method steps are: argon arc welding for base, gas shielded welding for cover, and cleaning the weld after welding.

[0027] In the present application, the heat dissipation serpentine tube and the silencer fin inside the heat well barrel are first welded through the heat well barrel inside the condenser body, and the whole is beautified and polished by grinding after welding. After grinding, the heat well barrel is placed into the interior of the condenser body through the second cover shell for welding. After the heat well barrel is installed, the second cover shell and the condenser body are welded, and then the first cover shell and the heat dissipation mechanism are installed. At the same time, water can be transported to the interior of the condenser body through the water inlet pipe and the water inlet pipe control valve during use. Through the cooperation of the above structure, the components can be individually integrated and then installed, thereby improving the manufacturing efficiency during welding and reducing the production cycle and production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall appearance of the device of this application;

[0029] Figure 2 For this application Figure 1 A right view schematic diagram of the internal structure;

[0030] Figure 3 For this application Figure 1 A right view structural diagram of ;

[0031] Figure 4 For this application Figure 1 A top view structural diagram of ;

[0032] Figure 5 For this application Figure 1 Schematic diagram of the internal structure;

[0033] Figure 6 It is a schematic diagram of the structure of the water inlet pipe 1 and the water inlet pipe control valve in this application;

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

[0035] Markings in the figure: 1. heat dissipation mechanism; 2. air outlet pipe control valve; 3. first cover shell; 4. condenser body; 5. water inlet pipe control valve; 6. water inlet pipe one; 7. second cover shell; 8. water outlet pipe two; 9. inner pipeline; 10. valve; 11. water outlet pipe one; 12. condenser liner; 13. condenser hollow barrel; 14. heating block; 15. inclined plate; 16. hot well barrel; 17. valve two; 18. fixing block; 19. inner nano-ceramic tube core; 20. sealing ring; 21. inspection manhole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Example:

[0038] Reference Figure 1-7 A method for manufacturing a nuclear power bypass diffusion device, comprising 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 junction 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, through Through the hot well barrel 16 inside the condenser body 4, the heat dissipation serpentine pipe and the silencer fin inside the hot well barrel 16 are first welded, and the whole is beautified and polished by grinding after welding. After grinding, the hot well barrel 16 is placed into the condenser body 4 through the second cover shell 7 for welding. After the hot well barrel 16 is installed, the second cover shell 7 and the condenser body 4 are welded, and then the first cover shell 3 and the heat dissipation mechanism 1 are installed. At the same time, when in use, water can be transported to the inside of the condenser body 4 through the water inlet pipe 16 and the water inlet pipe control valve 5.

[0039] Reference Figure 1-7 A flange and multiple groups of flange bolts are provided at the upper end of the inspection manhole 21. Multiple groups of heat exchange tubes are provided inside the hot well barrel 16. The outer ends of the heat exchange tubes are clamped with mounting strips. The outer ends of the mounting strips are welded to the inner walls of the hot well barrel 16. The inspection manhole 21 can be opened and closed by the flange and flange bolts, so that personnel can enter the interior for maintenance.

[0040] Reference Figure 1-7 The condenser body 4 includes an outer shell, the inner wall of which is welded with a condenser liner 12, the inner wall of which is fixedly connected with a condenser hollow barrel 13, and the water flow on the inner wall of the condenser body 4 can be heated through the gap between the condenser liner 12 and the condenser hollow barrel 13.

[0041] Reference Figure 1-7 A plurality of heating blocks 14 are arranged at the junction of the hot well barrel 16 and the condenser inner tank 12. A plurality of left and right water inlet pipes 6 are arranged at the outer end of the first cover shell 3. A water inlet pipe control valve 5 is arranged inside the water inlet pipe 6. The water flow inside the hot well barrel 16 can be heated and controlled by the heating blocks 14.

[0042] Reference Figure 1-7 The water inlet pipe 6 passes through the inner wall of the condenser body 4 and is fixedly connected to an inner pipe 9. The 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 arranged inside the water outlet pipe 11, and the flow rate of water entering the condenser body 4 is controlled by the valve 10.

[0043] Reference Figure 1-7 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 junction of the first cover shell 3 and the air outlet duct control valve 2. The sealing ring 20 and the junction of the first cover shell 3 and the air outlet duct control valve 2 are both grinded and welded by a grinder. The oxides and impurities generated during the welding process can be removed by grinding and welding, thereby improving the strength and aesthetics of the weld.

[0044] Reference Figure 1-7 One end of the water inlet pipe 6 away from the water inlet pipe control valve 5 is fixedly connected to the water outlet pipe 2 8, and the upper end of the water outlet pipe 2 8 is fixedly connected to multiple groups of fixing blocks 18. The upper end of the fixing block 18 is fixedly connected to the outer end of the condenser body 4, and the fixing block 18 can reinforce the connection of the water outlet pipe 2 8.

[0045] Reference Figure 1-7 An inner nano-ceramic tube core 19 is arranged inside the water outlet pipe 8, and a valve 17 is arranged at the left outer end of the inner nano-ceramic tube core 19. The inner nano-ceramic tube core 19 is made of nano-scale ceramic particles, so that it has extremely high strength and durability and a long service life.

[0046] Reference Figure 1-7 The heat dissipation mechanism 1 is internally provided with a plurality of heat dissipation serpentine tubes and silencer fins. The silencer fins are made of sound-absorbing materials, which can absorb sound waves and convert them into heat, thereby reducing the noise level. The heat dissipation serpentine tubes transfer the heat to the air.

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

[0048] During manufacturing, the heat well barrel 16 inside the condenser body 4 can be used to first weld the heat dissipation serpentine pipe and the muffler fin inside the heat well barrel 16. After welding, the whole is polished and polished. After polishing, the heat well barrel 16 is placed inside the condenser body 4 through the second cover shell 7 for welding. After the heat well barrel 16 is installed, the second cover shell 7 and the condenser body 4 are welded, and then the first cover shell 3 and the heat dissipation mechanism 1 are installed. At the same time, the inside of the condenser body 4 can be ventilated through the water inlet pipe 6 and the water inlet pipe control valve 5 during use. Water source transportation is carried out, and the water source treated by the hot well barrel 16 can be discharged through the outlet pipe 28. At the same time, when the hot well barrel 16 needs to be tested and the internal components of the hot well barrel 16 need to be replaced, the components can be transported through the inspection manhole 21. At the same time, the inspection manhole 21 can be opened and closed by the flange and flange bolts during use, so that personnel can enter the interior for maintenance. Through the cooperation of the above structure, the components can be separately integrated and then installed, thereby improving the manufacturing efficiency during assembly and welding, and reducing the production cycle and production cost.

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

Claims

1. A nuclear power bypass diffusion device, characterized in that: The steps include: 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) from 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), and after the 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). After welding, clean and polish the oil, rust and other impurities around the welding area; 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 invention 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 junction 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).

3. 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 groups of flange bolts, and the interior of the hot well barrel (16) is provided with a plurality of groups 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).

4. 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 with a condenser liner (12), and the inner wall of the condenser liner (12) is fixedly connected with a condenser hollow barrel (13).

5. A nuclear power bypass diffusion device as claimed in claim 4, 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); 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).

6. A nuclear power bypass diffusion device as claimed in claim 5, 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).

7. A nuclear power bypass diffusion device as claimed in claim 2, 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.

8. A nuclear power bypass diffusion device as claimed in claim 5, 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), and the upper end of the water outlet pipe 2 (8) is fixedly connected to multiple groups of fixing blocks (18), and the upper end of the fixing block (18) is fixedly connected to the outer end of the condenser body (4).

9. A nuclear power bypass diffusion device as claimed in claim 8, 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).

10. 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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