Straight-through type C-shaped bourdon tube high-pressure sulfur-resisting pressure gauge and manufacturing method thereof

A technology of spring tube and pressure gauge, which is applied in the direction of fluid pressure measurement of elastic deformation gauge, measuring fluid pressure, instruments, etc., to achieve the effect of weakening corrosion, easy maintenance, and simple and convenient disassembly and assembly

Active Publication Date: 2013-04-17
SICHUAN CHUANFU INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, diaphragm pressure gauges can only be used in low-pressure conditions where the medium is easy to crystallize and the indoor environment is good.

Method used

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  • Straight-through type C-shaped bourdon tube high-pressure sulfur-resisting pressure gauge and manufacturing method thereof
  • Straight-through type C-shaped bourdon tube high-pressure sulfur-resisting pressure gauge and manufacturing method thereof
  • Straight-through type C-shaped bourdon tube high-pressure sulfur-resisting pressure gauge and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, a straight-through C-shaped spring tube high-pressure sulfur-resistant pressure gauge, which includes a dial 1, a transparent cover 2 set outside the dial 1, a pressure measurement mechanism 5 installed on one side of the dial 1 and installed on the other side of the dial 1 The pointer 3 on the side is connected to the pressure measuring mechanism 5, and it also includes a joint 4, a C-shaped spring tube 6, an upper joint 7, a lower joint 8 and a connecting rod 9. The joint 4 is arranged at the bottom of the dial 1, and the joint One end of 4 is a free end, and the other end of the joint 4 is connected to one end of the C-shaped spring tube 6 through the lower connector 8, which is sleeved on the C-shaped spring tube 6, and the lower connector 8 is close to one end of the joint 4. A gasket groove 10 with a tapered surface is provided on the end surface of the side, and a gasket 11 closely matched with it is placed in the gasket groove 10. The ...

Embodiment 2

[0047] Its structure is with embodiment 1.

[0048] A method for making a straight-through C-shaped spring tube high-pressure sulfur-resistant pressure gauge, which includes two steps of manufacturing a C-shaped spring tube 6 and pressure gauge assembly, wherein the manufacturing of the C-shaped spring tube 6 includes the following sub-steps :

[0049] S11: Prepare blanks: select Φ16.5mm nickel-based alloy rods, cut into lengths of 178mm;

[0050] S12: Processing shape: the outer diameter of the nickel-based alloy bar is turned to Φ16mm, and the length is 175mm;

[0051] S13: Processing the inner hole: Drill the inner hole of the nickel-based alloy rod to ensure that its inner diameter is Φ6.6mm, and then ream and bore the hole to make the inner hole diameter of the nickel-based alloy rod Φ7.2mm, and the smoothness reaches ▽5;

[0052] S14: Threading: use a lathe to process threads on both ends of the nickel-based alloy bar, the size is M14×1.25-14, one end is left-handed t...

Embodiment 3

[0061] Its structure is with embodiment 1.

[0062] A method for making a straight-through C-shaped spring tube high-pressure sulfur-resistant pressure gauge, which includes two steps of manufacturing a C-shaped spring tube 6 and pressure gauge assembly, wherein the manufacturing of the C-shaped spring tube 6 includes the following sub-steps :

[0063] S11: Prepare blanks: select Φ17mm nickel-based alloy rods, cut into lengths of 180mm;

[0064] S12: Processing shape: the outer diameter of the nickel-based alloy bar is turned to Φ16mm, and the length is 175mm;

[0065] S13: Machining the inner hole: Drill the inner hole of the nickel-based alloy bar to ensure that its inner diameter is Φ6.7mm, and then ream and bore the hole so that the inner hole diameter of the nickel-based alloy bar is Φ7.2mm, and the smoothness reaches ▽5;

[0066] S14: Threading: use a lathe to process threads on both ends of the nickel-based alloy bar, the size is M14×1.25-14, one end is left-handed t...

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Abstract

The invention relates to a straight-through type C-shaped bourdon tube high-pressure sulfur-resisting pressure gauge which comprises a joint (4), a C-shaped bourdon tube (6), an upper joint (7), a lower joint (8) and a connecting rod (9), wherein the joint (4) is connected with one end of the C-shaped bourdon tube (6); the C-shaped bourdon tube (6) is connected with the connecting rod (9); and a pressure measuring mechanism (5) is connected with the connecting rod (9). The manufacturing method comprises the steps of manufacturing the C-shaped bourdon tube and assembling the pressure gauge, wherein the C-shaped bourdon tube is manufactured through the steps of S11, preparing a blank; S12, machining the appearance; S13, machining an inner hole; S14, threading; S15, machining the outer wall of the tube; S16, bending and shaping; S17, vacuumizing and heating; and S18, carrying out aging treatment, The pressure gauge is assembled through the steps of S21, assembling the C-shaped bourdon tube; and S22, assembling a gauge head, wherein the C-shaped bourdon tube is made of nickel base alloy material. The pressure gauge has the advantages of high-pressure resistance, corrosion resistance, precision stability and convenience in maintenance.

Description

technical field [0001] The invention relates to the technical field of instruments and meters, in particular to a straight-through C-shaped spring tube high-pressure sulfur-resistant pressure gauge and a manufacturing method thereof. Background technique [0002] Pressure gauges are widely used in the industrial field, and can be seen everywhere in the fields of heat pipe network, oil and gas transmission, water supply and gas supply system, vehicle maintenance factory and so on. With the rapid development of the national economy, the demand for natural gas is also increasing. The high-sulfur gas fields, which were regarded as forbidden areas in the early stage of natural gas field exploitation, have gradually entered into large-scale mining from low-sulfur to high-sulfur. Not only has high H content 2 The composition of S, accompanied by CO 2 , CL and other media, and the pressure is relatively high, generally above 40MPa, up to 140MPa, which requires extremely high corro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L7/04G01L19/06
Inventor 罗绪良
Owner SICHUAN CHUANFU INSTR
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