Ultrahigh pressure water parallel pressure regulation system and pressure regulation method

A pressure regulation system and ultra-high pressure technology, applied in earthwork drilling, mining equipment, tunnels, etc., can solve problems such as poor synchronization and difficult pressure adjustment, so as to improve stability and synchronization, improve construction efficiency, and ensure Effects on Reliability and Safety

Active Publication Date: 2019-12-03
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes an ultra-high pressure water parallel pressure regulating system and a pressure regulating method, which solves the problems of difficult pressure adjustment and poor synchronization of the high pressure water system in the prior art

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  • Ultrahigh pressure water parallel pressure regulation system and pressure regulation method

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Embodiment 2

[0025] Embodiment 2, a pressure regulation method of an ultra-high pressure water parallel pressure regulation system mounted on a TBM, comprising the following steps:

[0026] S1: The high-pressure water system is running, the electrical control parts are not running temporarily, the high-pressure water pump of the high-pressure water system is started at low pressure, and the water is discharged through the overflow port of the high-pressure pneumatic stop valve;

[0027] S2: Then the electrical control part runs, the upper computer controls the electromagnetic reversing valve and the proportional speed regulating valve to open, and the gas is passed into the high-pressure pneumatic stop valve, the gas pressure value is set to P1, and the force area on the gas side is a fixed value S1;

[0028] S3: With the increase of gas pressure P1, the liquid pressure value P2 of the high-pressure water in the second pipeline entering the high-pressure pneumatic stop valve also increases ...

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Abstract

The invention discloses an ultrahigh pressure water parallel pressure regulation system and pressure regulation method. The problems that in the prior art, pressure of a high pressure water system isdifficult to regulate, and synchronism is poor are solved. At least one set of ultrahigh pressure water pneumatic pressure regulation system is included, is connected with an upper computer and comprises an electrical control part and at least one set of high pressure water system, wherein the electrical control part is connected with the high pressure water system and the upper computer, a high pressure pneumatic stop valve is arranged on a bypass pipeline of the high pressure water system and is connected with the electrical control part through a first pipeline, the first pipeline is provided with a proportional speed regulation valve and a check valve in a parallel connection mode, and the proportional speed regulation valve is connected with the upper computer. The high pressure pneumatic stop valve regulates pressure of pump outlets through the balance of inner gas pressure and water pressure, output pressure of eight sets of water pumps in the ultrahigh pressure water system isregulated, and stability and synchronism of the high pressure water system are improved.

Description

technical field [0001] The invention relates to the technical field of high-pressure water rock breaking, in particular to an ultra-high pressure water parallel pressure regulating system and a pressure regulating method. Background technique [0002] The traditional tunnel boring machine (TBM) adopts mechanical rock breaking, and uses hobs to press, roll, and grind the hard rock, causing high-stress areas and cracks in the hard rock. As the cracks expand, gravel flakes are formed. In order to achieve the purpose of hard rock tunnel excavation, but this kind of rock-breaking method is very serious to the wear and tear of the hob. According to statistics, the hob wear cost and maintenance and replacement time in the hard rock environment account for as much as 30% of the project cost and construction period. -40%, or even more, has seriously affected the construction speed and economic benefits. In recent years, scholars at home and abroad have proposed a concept of using hi...

Claims

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Application Information

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IPC IPC(8): E21D9/10E21D9/11
CPCE21D9/1066E21D9/108E21D9/11
Inventor 谭顺辉周小磊顾永升俞培德蔡留金张杰郭攀登吴豪
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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