Self-sealing type deep-sea pressure-tight sampling control valve

A sampling control, deep-sea technology, applied in sampling devices and other directions, can solve problems such as high cost, reduce pressure holding effect, affect sampling operation, etc., achieve the requirements of reducing installation and stroke accuracy, prevent structural damage, and avoid the effect of complex structure

Inactive Publication Date: 2006-02-08
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are following three disadvantages in this common on-off valve driven by a motor: one, because it is driven by a motor, each sampler must be powered by a submersible and controlled separately. The interference seriously affects the sampling operation and takes up the resources of the submersible; secondly, due to the high pressure environment, the drive motor needs to be oil-filled and sealed, and a specific compensation mechanism must be used to balance the pressure difference between the inside and outside of the sealed

Method used

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  • Self-sealing type deep-sea pressure-tight sampling control valve

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Example Embodiment

[0013] Such as figure 1 As shown, the present invention includes: spring seat 1, pre-compression spring 2, O-shaped sealing ring 3, valve core rod 4, valve body 5, piston return spring 6, piston 7, limit nut 8, drive spring 9, drive The block 10, the sleeve 11, the end cover 12, the valve core rod 4 is provided with an O-shaped sealing ring 3, the valve core rod 4, the pre-compression spring 2 and the spring seat 1 are sequentially arranged in the valve body 5, and the outer side of the piston 7 There is a piston return spring 6, the piston 7 is sleeved on the valve core rod 4, the limit nut 8 is provided on the top of the valve core rod 4, and one end of the sleeve 11 is sleeved on the piston 7 and the piston return spring 6 and connected with the valve body 5. , The other end is provided with a drive spring 9 and a drive block 10 and an end cover 12 is provided.

[0014] Except for the valve port sealing of the valve body 5 and the sealing structure formed by the piston 7, the v...

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Abstract

The invention relates to a self-sealing deep sea pressurize sampling control valve in the field of ocean technology apparatus. The apparatus comprises: a spring seat, a pre-compressed spring, an O-type sealed coil, a valve core rod, a valve body, a piston return spring, a piston, a spacing nut, a driving spring, a driving block, a cylinder and an end cover, wherein the valve core rod arranges an O-type sealed coil; the valve core rod, the pre-compressed spring and the spring seat are in turn positioned inside the valve body; the piston return spring is positioned on the outside of the piston; the piston is covered on the valve core rod; the spacing nut is positioned on the top of the valve core rod; one end of the cylinder is covered on the piston and the piston return spring and is connected with the valve body, while the other end arranges the driving spring, the driving block and the end cover.

Description

technical field [0001] The invention relates to a valve in the technical field of marine engineering, in particular to a self-sealing deep-sea pressure-holding sampling control valve. Background technique [0002] In order to carry out marine research, it is often necessary to collect fluid samples of specific underwater locations, specific environments, and specific components for analysis and research. In order to ensure the accuracy of analysis and research, it is usually required that the collected samples can maintain the original physical and chemical composition and state, such as purity, pressure holding, heat preservation, and phase state maintenance. For example, seabed hydrothermal fluid is a liquid ejected from fountains distributed on the ocean floor, generally located at a water depth of 1,000 to 6,000 meters. The chemical composition and microorganisms in this hydrothermal fluid have a significant impact on the origin of life and the mineralization of seafloor...

Claims

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Application Information

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IPC IPC(8): G01N1/08
Inventor 马厦飞陆耀辉俞国康任平
Owner SHANGHAI JIAO TONG UNIV
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