An associated assembly control rod end plug welding chamber

Abstract

The present application relates to the field of mechanical equipment, and more particularly to a related assembly control rod end plug welding chamber. The welding chamber comprises a chamber body, X-axis direction symmetrical installation guide sealing connecting piece and positioning block connecting piece, Z-axis direction installation welding torch connecting piece, Z-axis offset Y-axis direction provided with light source lens, Y-axis direction provided with ocular lens sealing connecting piece and exhaust hole; the rod inlet guide part is sealingly installed in the guide sealing connecting piece; the guide sealing connecting piece is sealingly connected with the chamber body; the positioning block outer sleeve is sleeved on the outside of the positioning block; the positioning block connecting piece is internally provided with the positioning block outer sleeve; the locking mechanism fixes the positioning block outer sleeve and the positioning block connecting piece on the chamber body; the welding torch porcelain nozzle part is inserted into the welding torch connecting piece; the ocular lens gland seals and fixes the ocular lens in the ocular lens sealing connecting piece, the light source lens is inserted into the chamber body, and the light source lens gland tightly seals and fixes the light source lens. The present application realizes dynamic sealing and stable protection gas control.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment, and more particularly to a welding chamber for a control rod end plug of a related component. Background Technology

[0002] The welding chamber for the control rod end plugs of related components is used for welding the end plugs of the control rods. TIG welding is a common welding method, and the design of the welding chamber affects the weld penetration and weld formation. The control rods of related components are used for reaction rate regulation in nuclear reactors, and the requirements for the weld are high. End plug assembly is completed before control rod welding. During end plug assembly, helium gas at a certain pressure is injected into the control rod and sealed within the fuel rod. To ensure the quality of the control rod end plug weld and prevent gas leakage from the fuel rod, the pressure in the chamber must be constant during welding and slightly higher than the pressure inside the control rod.

[0003] The existing welding machine uses a mechanical structure for its sealing chamber. The welding chamber is balanced with the filling pressure, which makes the welding machine structure relatively complex, inconvenient to disassemble, and has poor sealing effect. This results in unstable airflow, which in turn leads to uneven welding of the control rod end plugs of related components and arc spatter. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a welding chamber for the control rod end plug of a related component, which has a good sealing effect and stable control of the protective gas.

[0005] This invention provides a related component control rod end plug welding chamber, comprising: The main body of the chamber, The chamber body has symmetrical mounting holes on two surfaces along the X-axis, and guide sealing connectors and positioning block connectors are respectively installed in the mounting holes. A mounting hole is provided on the top surface of the chamber body in the Z-axis direction, and a welding torch connector is installed in the mounting hole. A light source lens is provided in the Z-axis offset Y-axis direction of the main body of the chamber, and an eyepiece sealing connector and an exhaust port are provided in the Y-axis direction; The rod inlet guide component is sealed and installed inside the guide seal connector; The guide sealing connector is sealed to the main body of the chamber; The outer sleeve of the positioning block is fitted over the outside of the positioning block, and the two are sealed and fitted together. The positioning block connector has an inner positioning block sleeve, and the two are sealed and fitted together. The locking mechanism secures the positioning block outer sleeve and the positioning block connector to the main body of the chamber; The ceramic nozzle component of the welding torch is inserted into the welding torch connector, and a seal is formed between the ceramic nozzle component and the welding torch connector. The eyepiece cap seals and secures the eyepiece within the eyepiece sealing connector. The light source lens is inserted into the main body of the chamber, and the light source lens cover presses and seals the light source lens.

[0006] The main body of the chamber is machined from a single piece of 316L stainless steel and is fixed to the chamber base through positioning holes and base positioning bolts.

[0007] The guide sealing connector is locked and fixed to the chamber body by the connector fixing bolts; The outer sealing ring of the connector is installed between the rod inlet guide component and the guide sealing connector, and a seal is formed by compressing the outer sealing ring of the connector.

[0008] The outer surface of the guide sealing connector is provided with an inner sealing ring and a shaft sealing ring. The inner sealing ring of the connector is tightly attached to the outer surface of the chamber body, and the shaft sealing ring of the connector is tightly attached to the inner surface of the mounting hole, forming a seal through extrusion deformation.

[0009] The locking mechanism includes a locking bolt and a locking nut. The locking bolt is threaded onto the chamber body and passes through the positioning block sleeve and positioning block connector before being inserted into the chamber body. Insulating pads and locking washers are installed between the locking bolts and the outer sleeve of the positioning block, and are tightened by rotating the locking nut. A positioning block shaft seal ring is installed between the positioning block and the positioning block outer sleeve; an inner seal ring for the positioning block connector is installed between the positioning block outer sleeve and the positioning block connector; and an outer seal ring for the positioning block connector is installed between the positioning block connector and the chamber body.

[0010] The welding torch connector is positioned on the chamber body by screws; A welding torch sealing ring is installed between the welding torch nozzle component and the welding torch connector.

[0011] The ceramic nozzle component of the welding torch is equipped with a ceramic nozzle sealing ring for sealing.

[0012] The eyepiece cap is screwed into the eyepiece sealing connector by a rotary thread installation method, which compresses the eyepiece sealing ring to deform it, thereby fixing and sealing the eyepiece. The eyepiece sealing connector is screwed into the chamber body by rotating the thread. The seal is formed by the eyepiece connector shaft seal and the eyepiece connector sealing ring compression deformation. The entire eyepiece assembly is fixed to the chamber body by the eyepiece fixing bolt.

[0013] The light source lens is inserted into the main body of the chamber and sealed by compression deformation of the light source lens shaft seal ring and the light source lens seal ring. The light source lens cover is pressed into the light source lens by fastening bolts to achieve a sealing effect.

[0014] The eyepiece sealing connector and the vent are respectively located on two opposite surfaces, with the vent located at the lower part of the chamber body.

[0015] Compared with the prior art, the control rod end plug welding chamber of the relevant components of the present invention has the following beneficial effects: (1) By designing a sealing system for the control rod inlet and the chamber components, the problem of sealing the control rod inlet during the welding process is effectively solved.

[0016] (2) The sealing problem of the positioning top block was effectively solved by the sealing design of the welding top block and the cavity components.

[0017] (3) The sealing problem of the welding gun was effectively solved by designing the welding gun components and chamber.

[0018] (4) Through the design of the welding chamber, especially the design of the exhaust port, the sealing of the welding chamber and the dynamic direction of the welding airflow are achieved, which improves the welding forming effect of the control rod. It effectively solves the problems of weld protrusion, oxidation, deformation and internal defects. Attached Figure Description

[0019] Figure 1 Diagram showing the welding chamber of the control rod end plug for components related to the XZ axis directions; Figure 2 Diagram showing the welding chamber of the control rod end plug of the YZ axis related components; In the picture, 1. Rod inlet guide component; 2. Guide sealing connector; 3. Connector fixing bolt; 4. Connector inner sealing ring; 5. Base positioning bolt; 6. Chamber body; 7. Positioning hole; 8. Chamber base; 9. Positioning block connector inner sealing ring; 10. Insulating gasket; 11. Locking washer; 12. Locking bolt; 13. Positioning block; 14. Positioning block outer sleeve; 15. Positioning block shaft sealing ring; 16. Locking nut; 17. Positioning block connector outer sealing ring; 18. Positioning block connector; 19. Ceramic nozzle sealing ring; 20. Welding torch sealing ring; 21. Welding torch connector; 22. Welding torch connector sealing ring; 23. Welding torch ceramic nozzle component; 24. Connector outer sealing ring; 25. Connector shaft sealing ring; 26. Control rod; 27. Light source lens shaft seal ring; 28. Light source lens seal ring; 29. ​​Light source lens; 30. Light source lens cap; 31. Eyepiece connector shaft seal; 32. Eyepiece lens seal ring; 33. Eyepiece connector seal ring; 34. Eyepiece fixing bolt; 35. Eyepiece; 36. Eyepiece cap; 37. Eyepiece sealing connector; 38. Vent hole. Detailed Implementation

[0020] To further understand the present invention, embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the present invention.

[0021] Embodiments of the present invention disclose a related component control rod end plug welding chamber, such as Figure 1 and Figure 2 As shown, it includes: The chamber body 6 is made of a single piece of 316L stainless steel and is fixed to the chamber base 8 through positioning holes 7 and base positioning bolts 5. The chamber body 6 has symmetrical mounting holes on two sides along the X-axis. The guide sealing connector 2 and the positioning block connector 18 are respectively installed in the mounting holes. The area between the guide sealing connector 2 and the positioning block connector 18 is a welding area. A mounting hole is provided on the top surface of the chamber body 6 in the Z-axis direction, and a welding torch connector 21 is installed in the mounting hole. A light source lens 29 is provided in the Z-axis offset Y-axis direction of the main body of the chamber, and an eyepiece sealing connector 37 and an exhaust hole 38 are provided in the Y-axis direction; Preferably, the eyepiece sealing connector 37 and the vent 38 are respectively disposed on two opposite surfaces, with the vent 38 located at the lower part of the chamber body.

[0022] The rod inlet guide component 1 is sealed and installed inside the guide sealing connector 2; it can be connected to the sealing connector 2 by threaded rotation. Specifically, the outer sealing ring 24 of the connector is installed between the rod inlet guide component 1 and the guide sealing connector 2, and a seal is formed by compressing the outer sealing ring 24 of the connector; The guide sealing connector 2 is sealed to the chamber body 6; Specifically, the guide sealing connector 2 is locked and fixed to the chamber body 6 by the connector fixing bolt 3; The outer surface of the guide sealing connector 2 is provided with an inner sealing ring 4 and a shaft sealing ring 25. The inner sealing ring 4 of the connector is tightly attached to the outer surface of the chamber body 6, and the shaft sealing ring 25 of the connector is tightly attached to the inner surface of the mounting hole, forming a seal through extrusion deformation.

[0023] The outer sleeve 14 of the positioning block is fitted over the outside of the positioning block 13, and the two are sealed and fitted together. The positioning block connector 18 has a positioning block outer sleeve 14 inside, and the two are sealed and fitted together. The locking mechanism fixes the positioning block outer sleeve 14 and the positioning block connector 18 to the chamber body 6; Specifically, the locking mechanism includes a locking bolt 12 and a locking nut 16. The locking bolt 12 is threaded onto the chamber body 6 and passes through the positioning block sleeve 14 and the positioning block connector 18 to be inserted into the chamber body 6. Insulating pad 10 and locking washer 11 are installed between locking bolt 12 and positioning block sleeve 14, and are locked by rotating locking nut 16. A positioning block shaft seal ring 15 is installed between the positioning block 13 and the positioning block outer sleeve 14, and a positioning block connector inner seal ring 9 is installed between the positioning block outer sleeve 14 and the positioning block connector 18. An outer sealing ring 17 of the positioning block connector (18) is installed between the positioning block connector (18) and the chamber body (6).

[0024] The welding torch connector 21 is positioned on the chamber body 6 by screws; The ceramic nozzle component 23 of the welding torch is inserted into the welding torch connector 21, and a seal is formed between the ceramic nozzle component 23 and the welding torch connector 21. Specifically, a welding torch sealing ring 20 is installed between the welding torch nozzle component 23 and the welding torch connector 21 for sealing.

[0025] The ceramic nozzle component 23 of the welding torch is provided with a ceramic nozzle sealing ring 19 for sealing. The ceramic nozzle component 23 of the welding torch serves to stabilize the gas flow and protect the welding tungsten electrode.

[0026] The eyepiece cap 36 seals and fixes the eyepiece 35 in the eyepiece sealing connector 37. Specifically, the eyepiece cap 36 is screwed into the eyepiece sealing connector 37 by a rotating thread installation method, which compresses the eyepiece sheet sealing ring 32 to deform it, thereby fixing and sealing the eyepiece 35. The eyepiece sealing connector 37 is screwed into the chamber body 6 by rotating the thread. The eyepiece connector shaft seal 31 and the eyepiece connector sealing ring 33 are squeezed and deformed to form a seal. The entire eyepiece component is fixed to the chamber body 6 by the eyepiece fixing bolt 34.

[0027] The light source lens 29 is inserted into the chamber body 6, and the light source lens cap 30 presses and seals the light source lens 29. Specifically, the light source lens 29 is inserted into the chamber body 6 and sealed by compression deformation of the light source lens shaft sealing ring 27 and the light source lens sealing ring 28. The light source lens cover 30 presses the light source lens 29 with fastening bolts to achieve a sealing effect.

[0028] The control rod end plug welding chamber of the related components of the present invention has the following advantages: (1) A sealed structure is formed at the connection with other components, and an exhaust hole is provided. A dynamic gas balance method is adopted. By designing the welding chamber of the control rod of the relevant components, the gas flow direction is ensured to meet the requirements of arc combustion and weld cooling effect. (2) By designing the axial and radial sealing fit of the connecting parts of the chamber, the high pressure chamber of the control rod welding chamber of the relevant components is stably sealed.

[0029] When using the control rod end plug welding chamber of the relevant components described in this invention for welding: The control rod 26 passes through the rod inlet guide component 1 and enters the positioning block 13. The shielding gas enters the chamber from the welding torch nozzle component 23 and is discharged through the exhaust port 38. By controlling the intake and exhaust volume of the chamber, the gas distribution is stable, and a dynamic positive pressure is formed inside the main body of the chamber during the welding process, achieving dynamic sealing of the sealed chamber and resulting in good welding performance. At the same time, the shielding gas plays a role in cooling and preventing oxidation during the welding process.

[0030] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A related component control rod end plug welding chamber, characterized in that, include: Main chamber (6) The chamber body (6) has symmetrical mounting holes on two surfaces in the X-axis direction, and guide sealing connector (2) and positioning block connector (18) are installed in the mounting holes respectively. A mounting hole is provided on the top surface of the chamber body (6) in the Z-axis direction, and a welding gun connector (21) is installed in the mounting hole. A light source lens (29) is provided in the Z-axis offset Y-axis direction of the main body of the chamber, and an eyepiece sealing connector (37) and an exhaust port (38) are provided in the Y-axis direction. The rod inlet guide component (1) is sealed and installed inside the guide sealing connector (2); The guide sealing connector (2) is sealed to the chamber body (6); The outer sleeve (14) of the positioning block is fitted over the outside of the positioning block (13), and the two are sealed together. The positioning block connector (18) is provided with a positioning block outer sleeve (14) inside, and the two are sealed and fitted together; The locking mechanism fixes the positioning block outer sleeve (14) and the positioning block connector (18) to the chamber body (6); The welding torch ceramic nozzle component (23) is inserted into the welding torch connector (21) to seal between the welding torch ceramic nozzle component (23) and the welding torch connector (21); The eyepiece cap (36) seals and fixes the eyepiece (35) in the eyepiece sealing connector (37). The light source lens (29) is inserted into the chamber body (6), and the light source lens cap (30) presses and seals the light source lens (29); The eyepiece cap (36) is screwed into the eyepiece sealing connector (37) by a rotating thread installation method, which compresses the eyepiece sealing ring (32) to deform it, thereby fixing and sealing the eyepiece (35); The eyepiece sealing connector (37) is screwed into the chamber body (6) by the thread rotation. The eyepiece connector shaft seal (31) and the eyepiece connector sealing ring (33) are squeezed and deformed to form a seal. The entire eyepiece component is fixed to the chamber body (6) by the eyepiece fixing bolt (34). The light source lens (29) is inserted into the chamber body (6) and sealed by compression deformation through the light source lens shaft sealing ring (27) and the light source lens sealing ring (28). The light source lens cover (30) presses the light source lens (29) with fastening bolts to achieve a sealing effect.

2. The control rod end plug welding chamber of the related component according to claim 1, characterized in that, The main body of the chamber (6) is made of a single piece of 316L stainless steel and is fixed to the chamber base (8) through positioning holes (7) and base positioning bolts (5).

3. The control rod end plug welding chamber of the related component according to claim 1, characterized in that, The guide sealing connector (2) is locked and fixed to the chamber body (6) by the connector fixing bolt (3); The outer sealing ring (24) of the connector is installed between the rod inlet guide component (1) and the guide sealing connector (2), and a seal is formed by pressing the outer sealing ring (24).

4. The control rod end plug welding chamber of the related component according to claim 1, characterized in that, The outer surface of the guide sealing connector (2) is provided with an inner sealing ring (4) and a shaft sealing ring (25). The inner sealing ring (4) of the connector is in close contact with the outer surface of the chamber body (6), and the shaft sealing ring (25) of the connector is in close contact with the inner surface of the mounting hole, forming a seal through extrusion deformation.

5. The control rod end plug welding chamber of the related component according to claim 1, characterized in that, The locking mechanism includes a locking bolt (12) and a locking nut (16). The locking bolt (12) is installed on the chamber body (6) by thread, and the locking bolt (12) passes through the positioning block sleeve (14) and the positioning block connector (18) and is inserted into the chamber body (6); The insulating pad (10) and locking washer (11) are installed between the locking bolt (12) and the outer sleeve of the positioning block (14), and are locked by rotating the locking nut (16). A positioning block shaft seal ring (15) is installed between the positioning block (13) and the positioning block outer sleeve (14), and an inner seal ring (9) of the positioning block connector is installed between the positioning block outer sleeve (14) and the positioning block connector (18). An outer sealing ring (17) of the positioning block connector (18) is installed between the positioning block connector (18) and the chamber body (6).

6. The control rod end plug welding chamber of the related component according to claim 1, characterized in that, The welding torch connector (21) is positioned on the chamber body (6) by screws; A welding torch sealing ring (20) is installed between the welding torch nozzle component (23) and the welding torch connector (21).

7. The control rod end plug welding chamber of the related component according to claim 1, characterized in that, The ceramic nozzle component (23) of the welding torch is provided with a ceramic nozzle sealing ring (19).

8. The control rod end plug welding chamber of the related component according to claim 1, characterized in that, The eyepiece sealing connector (37) and the vent (38) are respectively disposed on two opposite surfaces, with the vent (38) located at the lower part of the chamber body.

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