Base bourdon tube assembly

Abstract

The utility model belongs to the technical field of density relay instruments, and particularly discloses a base bourdon tube assembly, which comprises a base main body, a boss and a bourdon tube main body, a tangent plane is arranged at the top of the side edge of the base main body, a welding slot is arranged on the tangent plane, the end part of the welding slot is arc-shaped so as to be matched with the connecting end of a bourdon tube, and the boss is arranged on the bourdon tube main body. A boss is arranged at the edge of the welding slot, a bourdon tube main body is inserted into the welding slot, the bourdon tube main body is welded in the welding slot through laser, and a base bottom column is arranged at the bottom of the base main body; the bourdon tube is welded in the welding groove through laser, and the boss is arranged at the edge of the welding slot, so that the bourdon tube is small in heat, small in deformation, small in internal stress change, attractive in appearance and convenient to weld, the cost performance of a product is also greatly improved, and the welding quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of density relay instruments, in particular to a base spring tube component. Background Art

[0002] The spring tube is an elastic sensitive element that uses the bending change or torsional deformation of the tube to measure pressure. One end of the spring tube is fixed and the other end is movable. Its cross-section shape is elliptical or flat. The tube with a non-circular cross-section gradually expands into a circle under the action of the internal pressure. At this time, the movable end produces a displacement that is related to the pressure.

[0003] The spring tube is an important elastic sensitive element of the density relay, among which the tube end displacement parameter is an important performance parameter of the density relay. High-precision tube end displacement can make the density relay more accurate. The traditional welding process will cause uneven heating of the spring tube, causing the internal stress of the spring tube to change and affecting the tube end displacement. Utility Model Content

[0004] The utility model aims to provide a base spring tube assembly to solve the problem that the traditional welding process causes uneven heating of the spring tube, causing the internal stress of the spring tube to change and affecting the displacement of the tube end.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a base spring tube assembly, comprising a base body, a boss and a spring tube body, a cut surface is provided at the top of the side edge of the base body, a welding slot is provided on the cut surface, the end of the welding slot is arc-shaped to adapt to the connecting end of the spring tube, a boss is provided at the edge of the welding slot, a spring tube body is inserted in the welding slot, the spring tube body is laser welded in the welding slot, and a base bottom column is provided at the bottom of the base body.

[0006] Preferably, a waist groove is provided between the base bottom column and the base body.

[0007] Preferably, a convex column is provided at the bottom of the base column.

[0008] Preferably, the spring tube body is in a C-shape.

[0009] Preferably, the base body and the base bottom column are both cylindrical.

[0010] Preferably, a connection hole is provided on the side of the base body near the top.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model laser welds the spring tube in the welding groove and arranges a boss on the edge of the welding groove, so that the spring tube is subjected to less heat, has less deformation, has less stress change generated inside, has a beautiful appearance, is easy to weld, and has greatly improved the cost performance of the product, thereby effectively improving the quality of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of the base of the utility model;

[0015] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model.

[0016] In the figure: 1. base body; 2. section; 3. boss; 4. spring tube body; 5. base bottom column; 6. waist groove; 7. boss; 8. connection hole; 9. welding slot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-3The utility model provides a technical solution: a base spring tube assembly, including a base body 1, a boss 3 and a spring tube body 4, a cut surface 2 is provided at the top of the side of the base body 1, a welding slot 9 is opened on the cut surface 2, the end of the welding slot 9 is arc-shaped, a boss 3 is provided at the edge of the welding slot 9, a spring tube body 4 is inserted in the welding slot 9, the spring tube body 4 is laser welded in the welding slot 9, a base bottom column 5 is provided at the bottom of the base body 1 to adapt to the connecting end of the spring tube, and the boss 3 reserved at the edge of the welding slot 9 can reduce stress changes during welding and improve the welding effect.

[0021] Furthermore, a waist groove 6 is provided between the base bottom column 5 and the base body 1 to limit the component.

[0022] Furthermore, a protruding column 7 is provided at the bottom of the base bottom column 5 for connecting other components.

[0023] Furthermore, the spring tube body 4 is in a C-shape.

[0024] Furthermore, the base body 1 and the base bottom column 5 are both cylindrical.

[0025] Furthermore, a connection hole 8 is provided on the side of the base body 1 near the top for mounting with bolts.

[0026] In summary, when the utility model is in use, the spring tube is inserted into the welding slot 9, and then a laser welding device is used to weld it. A boss 3 is reserved at the edge of the welding slot 9 on the base body 1. During welding, the laser heats the edge of the boss 3 to fuse it with the spring tube. The welding time is short, the heat generation is small, the stress change is small, the welding is convenient, and it has a high cost performance.

[0027] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A base spring tube assembly, characterized in that: The invention comprises a base body (1), a boss (3) and a spring tube body (4); a cut surface (2) is provided at the top of the side edge of the base body (1); a welding slot (9) is provided on the cut surface (2); the end of the welding slot (9) is arc-shaped; a boss (3) is provided at the edge of the welding slot (9); a spring tube body (4) is inserted into the welding slot (9); the spring tube body (4) is laser welded in the welding slot (9); and a base bottom column (5) is provided at the bottom of the base body (1).

2. A base spring tube assembly according to claim 1, characterized in that: A waist groove (6) is provided between the base bottom column (5) and the base body (1).

3. A base spring tube assembly according to claim 1, characterized in that: A convex column (7) is provided at the bottom of the base bottom column (5).

4. A base spring tube assembly according to claim 1, characterized in that: The spring tube body (4) is in a C-shape.

5. The base spring tube assembly according to claim 1, characterized in that: The base body (1) and the base bottom column (5) are both cylindrical.

6. A base spring tube assembly according to claim 1, characterized in that: A connection hole (8) is provided on the side of the base body (1) near the top.

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