Novel fixed pressure ring type fast opening blind plate and opening and closing method of novel fixed pressure ring type fast opening blind plate

Abstract

The invention discloses a novel fixed pressure ring type fast opening blind plate and an opening and closing method of the novel fixed pressure ring type fast opening blind plate. The inner and outer surfaces of a door cover of the blind plate are both spherical curve surfaces, the weight is light, a fixing ring and pressure ring structure is adopted between the door cover and a tube body flange and is used for mainly bearing the pressure stress, safety and reliability are realized, and the stress is good. After the door cover is closed, a seam between the door cover and the tube body flange is provided with a position limiting ring capable of vertically sliding, the fixed pressure ring is limited in a specified position and cannot move, and safety and reliability are realized. The outer edge of the door cover is aligned with the upper surface of the tube body flange, in addition, a dustproof ring is adopted for sealing, and wind and sand invasion is prevention. Meanwhile, the blind plate is provided with a safe interlocking and pressure sound and light warning linkage device.

Description

technical field [0001] The invention relates to a new type of fast opening and closing blind plate and its opening and closing method for quick opening pressure vessels, especially suitable for use on pressure vessels that are often opened and closed due to operations in the oil and gas industry, such as pipe pigs Sending and receiving equipment, filtration and separation equipment, etc. Background technique [0002] At present, the quick-opening blind plates used in oil and gas ground engineering include the following types: [0003] 1. The quick-opening blind plate door cover is a flat cover, which has poor force and poor reliability, and the door cover sinks into the flange of the cylinder, and the surrounding is easy to deposit wind and sand sewage, which affects the opening and closing of the blind plate; when it is used vertically, The door cover is difficult to open and close; and the price is expensive, and the delivery cycle is too long. [0004] 2. The connecting...

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Problems solved by technology

[0003] 1. The quick-opening blind plate door cover is a flat cover, which has poor force and poor reliability, and the door cover sinks into the flange of the cylinder, and the surrounding is easy to deposit wind and sand sewage, which affects the opening and closing of the blind plate; when it is used vertically, The door cover is difficult to open and close; and the price is expensive, and the lead time is too long

[0004] 2. The connecting ring between the quick-opening blind plate door cover and the cylinder flange is subjected to shear stress, the force is not good, the connecting ring is invisible, accidents are prone to occur, and the safety and reliability are poor.

[0005] 3. The quick-opening blind plate is similar to the two-lobed clamp blind plate. The door cover is a stamped and welded steel plate structure, which is difficult to open and close, difficult to process, high price, and low cost performance.

[0006] 4. The three-lobed clamp type quick-opening blind plate is laborious to open and close, and the processing is complicated, so it is only suitable for horizontal use.

[0007] 5. The buckle-type quick-opening blind plate, because the door cover and the cylinder flange are connected by slotted threads, the force is not good, it is only suitable for small specifications, and the scope of use is limited

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