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A double-connected single-seat hemispherical valve for LNG unloading arm

A hemispherical valve and valve seat technology, applied in valve details, valve devices, valve housing structure, etc., can solve problems such as complex structure, inconvenient operation, and high price

Active Publication Date: 2022-04-15
HUBEI TAIHE PETROCHEM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are problems of complex structure, heavy weight, high price and inconvenient operation

Method used

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  • A double-connected single-seat hemispherical valve for LNG unloading arm
  • A double-connected single-seat hemispherical valve for LNG unloading arm
  • A double-connected single-seat hemispherical valve for LNG unloading arm

Examples

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Effect test

Embodiment

[0056] like figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, the embodiment of the present invention provides a double-connected single-seat semi-spherical valve for the LNG unloading arm, including a valve body assembly 1, a valve seat assembly 3 and a valve stem assembly 4, and the valve body assembly 1 is arranged on the On the valve seat assembly 3, the valve stem assembly 4 is arranged on the valve body assembly 1, and also includes a drive assembly 6, which drives the valve stem assembly 4 to rotate to form the valve body assembly 1 Opening or closing, it also includes a ball assembly 2 , the ball assembly 2 is arranged in the valve body assembly 1 , and the valve stem assembly 4 is connected with the ball assembly 2 .

[0057] In the embodiment of the present invention, the driving assembly 6 drives the valve stem assembly 4 to rotate, and the valve stem assembly 4 drives the ball assembly 2 to rotate, therefore, the ball assembly 2 can be opened ...

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Abstract

The invention relates to a double-connected single-seat semi-spherical valve for an LNG unloading arm, comprising the left valve seat, the right valve seat, the left valve body, the right valve body, the left The hemisphere, the right hemisphere, the left valve seat and the right valve seat are locked and released by the clamping mechanism, and the left hemisphere and the right hemisphere pass through the left upper valve stem, the right upper valve stem, The left lower valve stem and the right lower valve stem are fixed, and the double eccentricity of the left hemisphere and the right hemisphere is realized, and the upper ends of the left upper valve stem and the right upper valve stem are respectively installed with the left gear plate, the The right gear plate realizes synchronous switching of the left hemisphere and the right hemisphere by cooperating with the rack for transmission. The double-connected single-seat hemispherical valve for the LNG unloading arm of the present invention has the characteristics of compact structure, light weight, strong sealing performance and rapid and accurate transmission.

Description

technical field [0001] The invention relates to the technical field of low-temperature ball valves for emergency disengagement of LNG unloading arms, in particular to a double-connected single-seat hemispherical valve for LNG unloading arms. Background technique [0002] In recent years, my country's natural gas consumption has been increasing year by year, and transporting LNG through transport ships has become an important way for my country to import natural gas. A cryogenic dump arm for loading and unloading LNG plays an important role. However, in the loading and unloading process, emergencies such as strong winds and waves and fires may be encountered. At this time, an emergency release device for the unloading arm is needed to quickly separate the unloading arm from the ship. [0003] The emergency disengagement device of foreign unloading arm has become mature after decades of development, and has been widely used on the unloading arm at present. Most of the unload...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/20F16K5/08F16K31/54F16K27/06
CPCF16K5/0605F16K5/0647F16K5/204F16K31/54F16K27/067
Inventor 章文忠韩龙生彭成武何俊李超庞媛宋鹏飞邓科
Owner HUBEI TAIHE PETROCHEM EQUIP
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