Bourdon tube joint assembly for universal pressure gauge

Abstract

The utility model provides a universal spring pipe joint assembly for a pressure gauge, and aims to solve the problems that a radial pressure gauge or an axial pressure gauge in the prior art uses an elliptical spring pipe, so that only different joints can be used during welding; the reliability, the consistency, the production efficiency and the like in the production process of different types of pressure gauges cannot be guaranteed; the utility model mainly comprises a bourdon tube, a circular welding end on the bourdon tube, a joint and a circular welding groove on the joint, according to the utility model, the welding end of the traditional bourdon tube is processed into a round shape from an oval shape, and meanwhile, the welding notch of the joint is processed into a round shape from an oval shape, so that the original oval welding path is changed into a round welding path, and the difficulty of automatic welding programming and tool clamp production is reduced; and meanwhile, joints and welding openings of the radial pressure gauge and the axial pressure gauge are unified, so that the production efficiency of products is improved, the difficulty of automatic welding is reduced, and the pressure gauge has the advantages of being wide in application range, low in cost and high in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of spring tube fitting technology, and in particular to a general-purpose spring tube fitting assembly for pressure gauges. Background Technology

[0002] In the manufacturing process of various Bourdon tube pressure gauges, the Bourdon tube and fittings are crucial components. Due to the diverse environments in which pressure gauges are installed and used, and the need for effective pressure measurement, pressure gauges need to be either radial or axial in form. Therefore, the welding direction of the Bourdon tube and fittings is an essential step. However, currently used radial and axial pressure gauges, due to their use of elliptical Bourdon tubes, require different fittings for welding, compromising the reliability, consistency, and production efficiency of different pressure gauge types during production. Utility Model Content

[0003] This application addresses the shortcomings of the prior art by providing a universal pressure gauge Bourdon tube connector assembly. The traditional Bourdon tube welding end is machined from an elliptical shape to a circular shape, and the welding groove of the connector is also machined from an elliptical shape to a circular shape. This transforms the original elliptical welding path into a circular welding path, reducing the difficulty of automatic welding program writing and tooling fixture production. At the same time, it unifies the connectors of radial and axial pressure gauges.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A general-purpose pressure gauge Bourdon tube connector assembly includes a Bourdon tube and a connector. The Bourdon tube is an integrally formed tubular cross-section structure, including a tube body and a welding end for welding. The welding end is machined into a circular cross-section. The connector includes a head and a body. A weld groove is machined into the body. The weld groove has a circular cross-section. The connector and the Bourdon tube are welded together by the engagement of the circular cross-section welding end and the weld groove.

[0006] Furthermore, the spring tube is welded axially to the weld groove of the joint.

[0007] Furthermore, the spring tube is radially welded onto the weld groove of the joint.

[0008] Furthermore, the welded Bourdon tube fitting assembly is connected to the pressure gauge housing.

[0009] The advantages of this utility model over the prior art are as follows:

[0010] This invention transforms the traditional elliptical welding end of the Bourdon tube into a circular shape, and also transforms the welding groove of the connector from an elliptical shape into a circular shape. The Bourdon tube and connector are welded at the required angle, and the resulting Bourdon tube connector assembly is used in the production of axial and radial pressure gauges. The design of the welding end shape of the Bourdon tube and connector transforms the original elliptical welding path into a circular welding path, reducing the difficulty of writing automated welding programs and producing tooling fixtures. It also standardizes the connectors for radial and axial pressure gauges, and the uniformity of the welding joints improves production efficiency and reduces the difficulty of automated welding. This invention has a wide range of applications, low cost, strong adaptability, and high practical value. Attached Figure Description

[0011] Figure 1 A spring tube fitting assembly welded radially;

[0012] Figure 2 A spring tube joint assembly welded along the axial direction.

[0013] Among them: 1. Bourdon tube; 2. Joint; 3. Cross section of the welded end of the Bourdon tube; 4. Cross section of the Bourdon tube. Detailed Implementation

[0014] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0015] This utility model provides a universal pressure gauge Bourdon tube connector assembly, which aims to solve the problem that existing radial or axial pressure gauges, due to the use of elliptical Bourdon tubes, can only use different connectors during welding, resulting in unreliable reliability, consistency, and production efficiency in the production process of different types of pressure gauges.

[0016] Example 1:

[0017] like Figure 1 As shown, the radial spring tube 1 connector 2 assembly is composed of, as... Figure 1 Welding is performed as shown. The welding end of the spring tube 1 is processed from an elliptical shape to a circle using equipment, and then the welding area of ​​the connector 2 is processed into a circular weld groove. This achieves the transformation from elliptical welding to circular welding, reduces the difficulty of automatic welding, and does not affect the performance of the original spring tube 1 connector 2 assembly.

[0018] Example 2:

[0019] like Figure 2 As shown, the axial spring tube 1 connector 2 assembly is composed of, as... Figure 2 Welding is performed as shown. Compared to welding the radial spring tube 1 connector 2 assembly, only the spring tube 1 needs to be rotated 90°. The same connector 2 and spring tube 1 can achieve the same universality for both radial and axial spring tube 1 connector 2 assemblies, even with different welding angles.

[0020] This invention transforms the elliptical welding end of the traditional Bourdon tube 1 into a circular shape, and simultaneously transforms the elliptical welding groove of the connector 2 into a circular shape. The Bourdon tube 1 and connector 2 are welded at the required angle, and the resulting Bourdon tube connector assembly is used in the production of axial and radial pressure gauges. The design of the welding end shapes of the Bourdon tube 1 and connector 2 transforms the original elliptical welding path into a circular welding path, reducing the difficulty of automatic welding program writing and tooling fixture production. It also standardizes the connector 2 for radial and axial pressure gauges, and the uniformity of the welding joint improves production efficiency and reduces the difficulty of automated welding. This invention has a wide range of applications, low cost, strong adaptability, and high practical value.

[0021] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A universal pressure gauge Bourdon tube connector assembly, characterized in that: The device includes a spring tube (1) and a connector (2). The spring tube (1) is an integrally formed tubular cross-section structure, which includes a tube body and a welding end for welding. The welding end is processed into a circular cross-section. The connector (2) includes a head and a body. A welding groove is processed on the body. The welding groove is a circular cross-section. The connector (2) and the spring tube (1) are welded together by the welding end with the circular cross-section and the welding groove.

2. The universal pressure gauge Bourdon tube connector assembly as described in claim 1, characterized in that: The spring tube (1) is welded axially along the joint (2) onto the weld groove of the joint (2).

3. The universal pressure gauge Bourdon tube connector assembly as described in claim 1, characterized in that: The spring tube (1) is radially welded to the weld groove of the joint (2) along the joint (2).

4. The universal pressure gauge Bourdon tube connector assembly as described in claim 1, characterized in that: The welded Bourdon tube fitting assembly is connected to the pressure gauge housing.

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