An underwater pipeline connection flange
A technology for connecting flanges and underwater pipelines. It is applied in the direction of mechanical equipment and couplings. It can solve the problems of reducing the service life of the sealing system, insufficient sealing force and leakage, and the size of the sealing force cannot be adjusted independently, so as to reduce clamping. The effect of maintaining damage, ensuring safety, and ensuring radial holding capacity
Inactive Publication Date: 2019-07-12
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
The medium sealing force of the above-mentioned device is determined by the pre-tightening force of the bolts, and the bolts not only need to radially hold the pipe tightly, but also realize the connection between the flange end covers, so the sealing force cannot be adjusted independently; If the bolt pre-tightening force is too small, the sealing force will be too small and the sealing force is insufficient to cause leakage. If the bolt pre-tightening force is too large, the service life of the sealing system will be reduced
Method used
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Embodiment Construction
[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0035] refer to Figure 1 ~ Figure 3 , Figure 21, an underwater pipeline connection flange, which is composed of a shell system 1, a holding system 2 and a sealing system 3, and is characterized in that: a holding system 2 is installed on the left side of the inner surface of the shell system 1, and the shell system A sealing system 3 is installed in the right side of the inner surface of 1, and a pipe 4 is in contact with the inner surface of the holding system 2 and the sealing system 3. Its working principle is: turn the nut to make the movable flange 11 move axially along the direction of the fixed flange 12, the movable flange 11 moves axially to push the holding cylinder 22 to move axially, and the holding cylinder 22 moves axially so that The tightening cylinder 22 and the tightening column 23 have relative slippage, and the tightening column 23 has...
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The invention relates to a submarine pipeline connecting flange which is composed of a shell system, a holding system and a sealing system. The flange is characterized in that the holding system and the sealing system are installed inside a cavity of the shell system, and the holding system and the sealing system are internally provided with pipelines. According to the working principle, a nut isscrewed to enablea movable flange to move in the axial direction, the movable flange moves in the axial direction and then pushes a holding cylinder to move in the axial direction, the holding cylinder axially enables the holding column to radially stretch out, and the holding column stretches out in the radial direction so that the pipeline is held. A puller bolt is screwed, the pressed degree ofa metal sealing ring can be changed, and therefore the sealing force can be changed. Compared with the prior art, the radial holding force and sealing pressure of the device can be independently adjusted, the flange is installed rapidly for an underwater submarine pipeline, and rapid repair connection of the submarine pipeline is achieved, so that the submarine pipeline repair period is shortened, the labor intensity is relieved, and the comprehensive cost for ocean oil-gas delivery is lowered.
Description
technical field [0001] The invention relates to the technical field of oil and gas submarine pipeline emergency repair equipment, in particular to an underwater pipeline connection flange. Background technique [0002] With the shortage of land oil and gas resources, the world's coastal countries have successively explored and exploited offshore oil and gas resources, and the exploration and exploitation of offshore oil and gas resources has gradually become the main trend of the development of the oil and gas industry at home and abroad. In addition, as my country's economy continues to grow rapidly, insufficient supply of oil and gas resources will become the main contradiction hindering economic development. In order to increase the possession of oil and gas resources, offshore oil and gas exploration and exploitation have become the strategic focus of my country's sustainable energy development. [0003] Submarine pipelines undertake important tasks such as the output of...
Claims
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IPC IPC(8): F16L37/08
CPCF16L37/08
Inventor 梁政谢帅张杰蒋发光何虹钢张梁邓严李镕成周加伟
Owner SOUTHWEST PETROLEUM UNIV