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Supercharging system integrated steel pipe hydrostatic testing machine water-filling apparatus

A technology of hydraulic testing machine and pressurization system, which is applied in the direction of applying stable tension/pressure to test material strength, liquid/vacuum degree for liquid tightness measurement, etc., which can solve the problem of difficult increase of pressure test pressure and production efficiency Low cost, high operating cost and other issues, to achieve the effect of reducing leakage points, low cost and high safety

Active Publication Date: 2016-03-02
CHINA NAT HEAVY MACHINERY RES INSTCO
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Problems solved by technology

[0003] The water filling device and the pressurization system of the traditional steel pipe hydraulic testing machine are two independent parts. During the pressure test, the pressurization system converts low-pressure water into high-pressure water, and then enters the water filling head of the water filling device through the water delivery device and finally enters the inside of the pipeline. Increase the pressure in the pipeline for pipeline pressure test, which will lead to more leakage points, making it difficult to increase the pressure test pressure to the required pressure, extremely inconvenient for maintenance, low production efficiency, and high operating costs

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  • Supercharging system integrated steel pipe hydrostatic testing machine water-filling apparatus
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  • Supercharging system integrated steel pipe hydrostatic testing machine water-filling apparatus

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] refer to figure 1 , figure 2 , image 3 , a pressurization system integrated steel pipe hydraulic testing machine water filling device, including a gland 3, the gland 3 is connected to the low-pressure cylinder 4 through the first stud 1 and the first nut 2, and the gland 3 is equipped with an oil inlet Pipeline 22; low-pressure cylinder 4 is equipped with piston rod 6, and the end of piston rod 6 is equipped with combined seal 5, which can prevent the oil on both sides of piston rod 6 from communicating; low-pressure cylinder 4 is also connected to the inside of cylinder connecting block 9 One end of the guide ring 8 and the other end of the guide ring 8 are connected to the high-pressure cylinder 11, and an oil return pipeline 24 is installed in the middle of the guide ring 8; the upper connecting gland 7 and the lower connecting gland 26 connect the low-...

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Abstract

A supercharging system integrated steel pipe hydrostatic testing machine water-filling apparatus comprises a low pressure cylinder body, a piston rod, a high pressure cylinder body and a water-filling head, etc. By controlling motion of the piston rod, internal pressure of a pipe is raised, pipe hydrostatic testing is realized, and the water delivery link is saved. During the pressure testing process, the water-filling head is prevented from being drawn back due to the effect of an anti-back block, and axial force is transmitted to a rack to make force on the whole structure to be more reasonable. Strength requirement of the whole body is reduced. A supercharging system and the water-filling apparatus are integrated. Thus, leak points are greatly reduced, supercharging efficiency is raised, the structure is simpler, operation is stable and reliable, safety is high, cost is low, and control is convenient.

Description

technical field [0001] The invention belongs to the technical field of pipeline forming equipment, and in particular relates to a water filling device for a pressurization system integrated steel pipe hydraulic testing machine. Background technique [0002] In recent years, with the rapid development of domestic and foreign economies, the demand for energy has increased sharply, and international and domestic efforts to exploit oil and natural gas have been intensified. As an economical, safe and uninterrupted long-distance transportation tool for oil and gas, oil and gas pipelines have developed rapidly. Hydrostatic testing is an essential process in the production process of oil and gas pipelines. Pipelines that have not passed the hydrostatic test cannot be used in actual oil and gas extraction and transportation projects. Therefore, any pipeline must be hydrostatically tested in accordance with API requirements. With the continuous improvement of pipeline performance r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01M3/02
Inventor 李培力马海宽寇永乐刘慧超高尚晖
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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