A welding tool for preventing welding deformation of NA interface seat of pressure vessel
By using external workpieces and internal workpieces to fix the NA interface seat, it avoids its deformation during welding, solves the problem of welding deformation of NA interface seat, improves welding quality and reduces the working strength of workers.
Patent Information
- Application Number
- CN202421463216.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-25
AI Technical Summary
During the welding process, the NA interface seat will deform towards the step hole, causing changes in the shape of the conical holes and grooves, reducing the welding quality, and increasing the work strength of the workers.
A welded tool including external workpiece, internal workpiece, bolts and lock nuts is adopted. The boss of the external workpiece is in contact with the groove of the NA interface seat, and the outer conical surface of the internal workpiece is cooperated with the conical hole of the NA interface seat to fix the NA interface seat to avoid deformation.
Effectively prevent NA interface seat from deforming during welding, improve welding quality, and reduce workers' working strength, avoid later polishing.
Smart Images
Figure CN222725884U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding of an NA interface seat and a pressure vessel, in particular to a welding tool for preventing the NA interface seat of a pressure vessel from welding deformation. Background Art
[0002] In the production workshop of biological agents, sanitary pressure vessels are usually used to contain biological agents. After the pressure vessel is machined and formed, the process requires welding a hole such as Figure 1~Figure 2 The NA interface seat shown in the figure has a groove 2 on the top surface of the NA interface seat 1 , and a tapered hole 3 connected to the groove 2 is formed on the bottom surface of the NA interface seat 1 , and the tapered hole 3 is coaxial with the groove 2 .
[0003] The method for workers to weld the NA interface seat 1 into the stepped hole 5 of the pressure vessel 4 is:
[0004] S1. The worker takes out a NA interface seat 1 and inserts it into the large hole of the step hole 5 of the pressure vessel 4 from top to bottom. Figure 3 As shown, and ensure that the bottom surface of the NA interface seat 1 is in contact with the step surface of the step hole 5;
[0005] S2. A worker operates a welding machine to weld the contact between the NA interface seat 1 and the pressure vessel 4. After the welding is completed, a circular weld 6 is formed between the NA interface seat 1 and the pressure vessel 4. Figure 4~Figure 5 As shown, the NA interface seat 1 is welded into the step hole 5 of the pressure vessel 4.
[0006] However, although this method can weld the NA interface seat 1 and the pressure vessel 4 together, it still has the following technical defects:
[0007] I. During the welding process, the NA interface seat 1 will deform toward the step hole 5, thereby causing the inner cone surface of the tapered hole 3 of the NA interface seat 1 to deform, and also causing the bottom surface of the groove 2 of the NA interface seat 1 to deform. However, the process requires that the inner cone surface of the tapered hole 3 and the bottom surface of the groove 2 should not deform, thereby greatly reducing the welding quality between the NA interface seat 1 and the pressure vessel 4.
[0008] II. After welding deformation, workers need to use grinding to process the parts of NA interface seat 1 that exceed the standard due to welding deformation, which increases the work intensity of workers accordingly.
[0009] Therefore, there is an urgent need for a welding tool that can greatly improve the welding quality between the NA interface seat and the pressure vessel and greatly reduce the work intensity of the workers. Utility Model Content
[0010] The utility model aims to overcome the shortcomings of the prior art and provide a welding tool for preventing welding deformation of the NA interface seat of a pressure vessel, which greatly improves the welding quality between the NA interface seat and the pressure vessel and greatly reduces the work intensity of workers.
[0011] The purpose of the utility model is achieved through the following technical solutions: a welding tool for preventing welding deformation of a NA interface seat of a pressure vessel, comprising an outer tool, an inner tool, bolts and locking nuts, the outer tool comprising an outer disk body and a boss, the boss being fixed on the bottom surface of the outer disk body, the boss having an outer cylindrical shape, the outer diameter of the boss being equal to the depth of the groove of the NA interface seat, the outer diameter of the boss being equal to the diameter of the groove, a first center hole being provided in the outer tooling that axially penetrates the outer disk body and the boss, the inner tooling comprising an inner disk body, an outer conical surface provided on the outer edge of the upper end portion of the inner disk body, the outer conical surface being matched with the inner conical surface of the conical hole of the NA interface seat, and a second center hole being provided in the inner tooling that axially penetrates the top and bottom surfaces of the inner disk body.
[0012] The outer diameter of the outer disk of the outer tooling is equal to the outer diameter of the NA interface seat.
[0013] The outer diameter of the inner disk of the inner tooling is smaller than the small hole diameter of the step hole of the pressure vessel.
[0014] The diameter of the first center hole of the outer tooling is equal to the diameter of the second center hole of the inner tooling, and the diameter of the first center hole is larger than the outer diameter of the bolt.
[0015] The top surface of the inner disk of the inner tooling is a plane.
[0016] The utility model has the following advantages: greatly improving the welding quality between the NA interface seat and the pressure vessel, and greatly reducing the work intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the NA interface seat;
[0018] Figure 2 for Figure 1 A top view of
[0019] Figure 3 A schematic diagram of inserting the NA interface seat from top to bottom into the large hole of the step hole of the pressure vessel;
[0020] Figure 4 is a schematic diagram of forming an annular weld between the NA interface seat and the pressure vessel;
[0021] Figure 5 for Figure 4 A top view of
[0022] Figure 6 It is a structural schematic diagram of the external tooling of the utility model;
[0023] Figure 7 for Figure 6 Bottom view of
[0024] Figure 8 It is a structural schematic diagram of the inner tooling of the utility model;
[0025] Fig. 9 for Figure 8 A top view of
[0026] Fig.10 It is a schematic diagram of the structure of the bolt;
[0027] Fig.11 is a schematic diagram of the structure of a locking nut;
[0028] Fig.12 A schematic diagram showing the outer disk of the outer tooling in contact with the top surface of the NA interface seat;
[0029] Fig.13 A schematic diagram of inserting the inner disc of the inner tooling into the tapered hole of the NA interface seat;
[0030] Fig.14 A schematic diagram of inserting a bolt through the first center hole and the second center hole in sequence from top to bottom;
[0031] Fig.15 A schematic diagram of threading a locking nut onto a threaded section of a bolt;
[0032] Fig.16 is a schematic diagram of forming an annular weld between the NA interface seat and the pressure vessel by a welding machine;
[0033] In the figure:
[0034] 1-NA interface seat, 2-groove, 3-conical hole, 4-pressure vessel, 5-step hole, 6-annular weld;
[0035] 7-external tooling, 8-internal tooling, 9-bolt, 10-locking nut, 11-external disc, 12-boss, 13-first center hole, 14-inner disc, 15-external cone, 16-second center hole. DETAILED DESCRIPTION
[0036] The utility model is further described below in conjunction with the accompanying drawings, and the protection scope of the utility model is not limited to the following:
[0037] like Figure 6~Figure 11As shown, a welding tool for preventing welding deformation of a NA interface seat of a pressure vessel comprises an outer tool 7, an inner tool 8, a bolt 9 and a locking nut 10, wherein the outer tool 7 comprises an outer disk body 11 and a boss 12, the boss 12 is fixedly arranged on the bottom surface of the outer disk body 11, the boss 12 is in an outer cylindrical shape, the outer diameter of the boss 12 is equal to the depth of the groove 2 of the NA interface seat 1, the outer diameter of the boss 12 is equal to the diameter of the groove 2, a first center hole 13 is provided in the outer tool 7 which axially penetrates the outer disk body 11 and the boss 12, the inner tool 8 comprises an inner disk body 14, an outer conical surface 15 is provided on the outer edge of the upper end portion of the inner disk body 14, the top surface of the inner disk body 14 of the inner tool 8 is a plane, the outer conical surface 15 matches the inner conical surface of the conical hole 3 of the NA interface seat 1, and a second center hole 16 is provided in the inner tool 8 which axially penetrates the top and bottom surfaces of the inner disk body 14.
[0038] The outer diameter of the outer disk 11 of the outer tooling 7 is equal to the outer diameter of the NA interface seat 1; the outer diameter of the inner disk 14 of the inner tooling 8 is smaller than the small hole diameter of the step hole 5 of the pressure vessel 4; the diameter of the first center hole 13 of the outer tooling 7 is equal to the diameter of the second center hole 16 of the inner tooling 8, and the diameter of the first center hole 13 is larger than the outer diameter of the bolt 9.
[0039] The method for workers to weld the NA interface seat 1 into the stepped hole 5 of the pressure vessel 4 is:
[0040] S1, the worker takes out a Figure 1~Figure 2 The NA interface seat 1 shown is inserted from top to bottom into the large hole of the step hole 5 of the pressure vessel 4, as shown in FIG. Figure 3 As shown, and ensure that the bottom surface of the NA interface seat 1 is in contact with the step surface of the step hole 5;
[0041] S2, the worker inserts the boss 12 of the outer tooling 7 into the groove 2 of the NA interface seat 1 from top to bottom, and the inserting direction is as follows Fig.12 As shown by the arrow in the middle, ensure that the bottom surface of the boss 12 contacts the bottom surface of the groove 2, and ensure that the outer disk body 11 of the outer tooling 7 contacts the top surface of the NA interface seat 1, as shown in FIG. Fig.12 As shown, at this time, the first center hole 13 of the outer tooling 7 is connected to the tapered hole 3 of the NA interface seat 1;
[0042] S3, the worker inserts the inner tooling 8 into the inner cavity of the pressure vessel 4 from the feed port, and then inserts the inner plate 14 of the inner tooling 8 into the tapered hole 3 of the NA interface seat 1 from bottom to top, and the insertion direction is as follows: Fig.13 As shown by the middle arrow, ensure that the outer conical surface 15 of the inner plate body 14 matches the inner conical surface of the NA interface seat 1, and hold the inner plate body 14 by hand. At this time, the second center hole 16 of the inner tooling 8 is connected to the first center hole 13 of the outer tooling 7;
[0043] S4, the threaded section of the bolt 9 passes through the first center hole 13 of the outer tooling 7 and the second center hole 16 of the inner tooling 8 from top to bottom. Fig.14 As shown, the locking nut 10 is then threadedly connected to the threaded section of the bolt 9, as shown in FIG. Fig.15 As shown, under the threaded connection force of the locking nut 10 and the bolt 9, the NA interface seat 1 is fixed between the outer tooling 7 and the inner tooling 8;
[0044] S5. The worker operates the welding machine to weld the contact between the NA interface seat 1 and the pressure vessel 4. After the welding is completed, a circular weld 6 is formed between the NA interface seat 1 and the pressure vessel 4. Fig.16 As shown, the NA interface seat 1 is finally welded in the step hole 5 of the pressure vessel 4;
[0045] S6. After welding, the inner and outer tooling are removed: the worker first holds the inner disc 14 by hand, and then loosens the locking nut 10 to remove the locking nut 10 from the bolt 9; after removing the locking nut 10, the worker lifts the bolt 9 upwards, and then removes the outer tooling 7 from the NA interface seat 1. After removing it, the worker removes the inner tooling 8 from the feed port of the pressure vessel 4.
[0046] Among them, from steps S2 to S5, it can be seen that since the NA interface seat 1 is fixed between the outer tooling 7 and the inner tooling 8, the bottom surface of the boss 12 of the outer tooling 7 contacts the bottom surface of the groove 2, and the boss 12 plays a role in limiting the bottom surface of the groove 2. At the same time, the outer cone 15 of the inner plate 14 matches the inner cone of the NA interface seat 1, and the outer cone 15 plays a role in limiting the inner cone of the NA interface seat 1. It can be seen that during the welding process, the bottom surface of the groove 2 of the NA interface seat 1 and the inner cone of the tapered hole 3 will not be deformed, which is compared with the welding process in the workshop. Figure 3~Figure 5 The welding method shown greatly improves the welding quality between the NA interface seat 1 and the pressure vessel 4.
[0047] In addition, since the NA interface seat 1 is not deformed, workers do not need to use grinding to process the parts of the NA interface seat 1 that are deformed beyond the standard due to welding, thereby greatly reducing the work intensity of workers.
[0048] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A welding tool for preventing welding deformation of a NA interface seat of a pressure vessel, characterized in that: It comprises an outer tooling (7), an inner tooling (8), a bolt (9) and a locking nut (10), wherein the outer tooling (7) comprises an outer disc body (11) and a boss (12), wherein the boss (12) is fixedly arranged on the bottom surface of the outer disc body (11), the boss (12) is in the shape of an outer cylinder, the outer diameter of the boss (12) is equal to the depth of the groove (2) of the NA interface seat (1), the outer diameter of the boss (12) is equal to the diameter of the groove (2), and the outer tooling (7) comprises an outer disc body (11) and a boss (12), wherein the outer disc body (11) is fixedly arranged on the bottom surface of the outer disc body (11), the boss (12) is in the shape of an outer cylinder, the outer diameter of the boss (12) is equal to the depth of the groove (2) of the NA interface seat (1), the outer diameter of the boss (12) is equal to the diameter of the groove (2), and the outer tooling (7) comprises an outer disc body (11) and a boss (12) ) is provided with a first center hole (13) which axially penetrates the outer disc body (11) and the boss (12); the inner tooling (8) comprises an inner disc body (14), an outer conical surface (15) which is provided on the outer edge of the upper end of the inner disc body (14); the outer conical surface (15) is matched with the inner conical surface of the conical hole (3) of the NA interface seat (1); and the inner tooling (8) is provided with a second center hole (16) which axially penetrates the top and bottom surfaces of the inner disc body (14).
2. A welding tool for preventing welding deformation of a NA interface seat of a pressure vessel according to claim 1, characterized in that: The outer diameter of the outer disk body (11) of the outer tooling (7) is equal to the outer diameter of the NA interface seat (1).
3. A welding tool for preventing welding deformation of a NA interface seat of a pressure vessel according to claim 1, characterized in that: The outer diameter of the inner disk (14) of the inner tooling (8) is smaller than the diameter of the small hole of the step hole (5) of the pressure container (4).
4. A welding tool for preventing welding deformation of a NA interface seat of a pressure vessel according to claim 1, characterized in that: The diameter of the first center hole (13) of the outer tooling (7) is equal to the diameter of the second center hole (16) of the inner tooling (8), and the diameter of the first center hole (13) is greater than the outer diameter of the bolt (9).
5. A welding tool for preventing welding deformation of a NA interface seat of a pressure vessel according to claim 1, characterized in that: The top surface of the inner disk (14) of the inner tooling (8) is a plane.