WO2018000539A1

WO2018000539A1 - Unmanned shipborne pipeline connector

Info

Publication number: WO2018000539A1
Application number: PCT/CN2016/095105
Authority: WO
Inventors: 杨越
Original assignee: 杨越
Priority date: 2016-06-26
Filing date: 2016-08-14
Publication date: 2018-01-04
Also published as: CN106015784B; CN106015784A

Abstract

An unmanned shipborne pipeline connector (10), comprising: pipeline parts (14), a plurality of support flanges (12) and jetting gaskets (26). The pipeline connector (10) is formed between the pipeline parts (14) and the support flanges (12). The pipeline parts (14) are connected together by means of nuts and screws, respectively. Gaskets (20) are mounted among flange surfaces of the support flanges (12). Each support flange (12) is provided with an annular groove (22). A ring (24) is provided inside each groove (22). The rings (24) and the grooves (22) are arranged in order of size. The jetting gaskets (26) are mounted on the rings (24) and used for directly jetting sealing materials.

Description

Unmanned ship-mounted pipeline connector

Technical field

The present invention relates to a service tool, and more particularly to a pipeline connector carried by an unmanned ship in the maintenance of a subsea oil and gas pipeline.

Background technique

Connector repair is to install fasteners-connectors outside the pipeline at the leak site to achieve the purpose of repairing pipeline leaks. Connector repair technology is now mature in land and submarine oil and gas pipeline maintenance operations, according to connector repair technology. The application of submarine oil and gas pipelines, the most critical component of the current maintenance technology is the subsea pipeline connector. Most of the connectors are made in two halves and are fixed to the pipe by bolting or welding, so they can be divided into welded and bolted. Welded connectors improve repair reliability and bolted connections are more convenient.

For the maintenance of submarine pipelines in China's vast seas, the current method is to install and repair underwater submersibles in Repulse Bay. For deep water areas, the submarine pipelines are referred to the working vessels, and the pipeline damages are pretreated directly on the working vessels. Perform a connector repair installation on the pipe. However, in the case of extremely low visibility of water turbidity, the above two methods have obvious drawbacks. Due to the need to arrange support ships, personnel, maintenance equipment and other auxiliary equipment to the maintenance site, and after the operation is completed, support ships, personnel, maintenance equipment and The recovery of other auxiliary equipment is therefore costly and economical.

The connector equipment of domestic manufacturers is mainly used in terrestrial oil and gas pipelines. It can be used to temporarily block oil and gas pipelines for 2-3 months during temporary maintenance, ensuring that oil and gas does not leak at the seals around the connectors. When used for permanent maintenance, it can be used. The connector is integrally welded to the pipe. Domestic manufacturers have not yet produced submarine oil and gas pipeline connector equipment. The domestic equipment technology of overseas submarine oil and gas pipelines is relatively mature. With the rapid development of unmanned ship technology, some special structure connectors have been developed and carried on unmanned ships. The repair of subsea pipelines can be accomplished without the need for staffing, using unmanned vessels and service connectors, as well as appropriate ancillary equipment, eliminating the need to upgrade the pipeline to unmanned vessels for pre-treatment, saving time and economic costs.

Summary of the invention

Accordingly, it is an object of the present invention to provide an unmanned ship-borne pipeline connector including a pipeline portion (a plurality of support flanges, a spray gasket, and a pipeline connector formed between the pipeline portion and the support flange, wherein the pipeline portions are respectively The nut and the screw are connected together, and a gasket is arranged between the flange faces of the support flange. The support flange has an annular groove, the inside of the groove is a ring, and the ring and the groove are arranged in order of size, and the gasket is sprayed. Mounted on the ring for direct injection of sealing material.

Preferably, each of the support flanges is gradually reduced around the circumference of the outer circumference, thereby leaving a peripheral space between the flange faces of the respective support flanges during the joining process, in the vicinity of the outer edge of the space, the support method The blue annular grooves are in a straight line.

Preferably, the ring is loosely mounted inside the recess and is constructed of the same material as the support flange.

Preferably, the ring is located outside the bolt line near the side of the support flange.

Preferably, if a leak occurs during operation of the support flange, the viscous heat repairable sealing compound is sprayed to fill the space between the gasket and the ring to seal the leak.

Preferably, the injection of the sealing compound is accomplished by an injection valve.

Preferably, the injection valve is mounted on a ring or ring gauge, the ring gauge being located inside the groove of the flange.

Preferably, a suitable sealing compound is sprayed into the bolt assembly spray device to complete the leak seal, The spray device can be installed during the flange connection or it can be installed when a leak occurs.

Preferably, the support flange is connected by a collinear hole of a nut and a screw passing through the support flange, and a rigid metal lens ring gasket is placed on the middle of the support flange.

Preferably, the flange face is gradually reduced at the periphery to leave a peripheral space between the flange faces, and a metal ring is inserted in the peripheral space, the metal ring having elastic clips on the inner edge thereof, at the flange Extending between the regions outside the peripheral reduction region, the metal ring also has a series of injection ports spaced apart from each other in the radial direction around the ring, and the metal ring also has a hole for the bolt to pass through.

Preferably, the injection of the sealant is accomplished by the spray port passing the sealant through the gasket itself, the elastomeric clip expanding to prevent the sealant from flowing back into the loop, and the spray port is normally open.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in consideration of the following description in conjunction with the accompanying drawings.

Figure 1 shows a first embodiment of the present invention;

Figure 2 shows a second embodiment of the present invention;

Figure 3 shows a third embodiment of the invention.

detailed description

Referring to Figure 1, the line connector 10 is formed between the support flanges 12 of the line portion 14, wherein the line portions 14 are joined together by nuts and screws, respectively, and a gasket 20 is required between the flange faces. Each flange is reduced around the periphery so that a peripheral space 21 is left between the flange faces during the joining process. In the vicinity of their outer edges, the flange 12 also has an annular groove 22 which is in line with each other. Loosely mounted inside the recess 22 is a ring 24, preferably constructed of the same material as the flange. Ring 24 There are several spray pads 26 for direct injection of the sealing material. The ring 24 and the groove 22 are actually aligned in order of magnitude so that the ring does not interfere with and interfere with the flange connection.

The ring 24 is actually located outside the bolt line near the flange edge. This position is chosen because it is a low stress area so that it does not affect the integrity of the flange connection.

The presence of the ring 24 indicates a leak between the flanges, and the process fluid leaks out of the ring and is released into the air. The flange assembly on the outside of the gasket base area is prevented from being partially sealed, resulting in a perfect flange design.

If the flanged working device leaks, the viscous heat repairable sealing compound can spray to fill the space between the gasket 20 and the ring 24 to seal the leak. In the embodiment shown in Figure 1, the injection of the sealing compound is accomplished by injection valve 26.

Turning now to Figure 2, without the use of the ring 24 of Figure 1 with an injection valve, a conventional ring gauge 40 is located inside the recess 22 of the flange. The use of a conventional ring gauge indicates that the flange face does not need to be reduced as much along the periphery as the flange of Figure 1. Alternatively, the leak seal can be accomplished by injecting a suitable sealing compound into the bolt assembly spray device 42, which can be installed during the flange connection or can be installed when a leak occurs.

The other aspects of the embodiment shown in Figure 2 are largely identical to the embodiment of Figure 1, and like components have been given the same reference numerals.

Referring to Figure 3, there is shown a line connection formed between two face-to-face flanges of line region 52 which are connected by nuts and screws 54, 56 through collinear holes 58 of flange 50, at the flange A hard metal lens ring spacer 60 is placed on the intermediate pad.

The flange faces are tapered at the periphery to leave a peripheral space 62 between them, into which a metal ring 64 is inserted. The metal ring 64 has a resilient clip 66 at its inner edge extending between regions outside the reduced area of the periphery of the flange. The ring 64 also has a series of injection ports 68 that are radially spaced from each other about the direction of the ring. The ring 64 also has a hole 70 for the bolt 56 to pass through. Ring 64 is typically in a relaxed state between the two flanges, except in the case of retaining the elastic clips.

Pipeline connections using hard metal lens ring gaskets are considered to be during leak sealing operations This causes a very serious leak due to the small pressure on the gasket material and the effect of the injection pressure on the flange face. However, the ring 64 reduces the occurrence of the above problem by reducing the reduction of the flange region by the sealant injection pressure, wherein the injection of the sealant is through the jet port 68 to allow the sealant to pass through the gasket itself, the resilient clip 66 The expansion prevents the sealant from flowing back into the ring 64.

The injection port 68 is normally open to allow any internal leakage gas to be depleted before the leak seal begins. In addition, no additional physical or mechanical work is required on the flange before the actual leak seal.

The present invention therefore provides a leak sealing system for flanged pipe connections that can be contracted during installation and can provide additional safety and operational efficiency without further mechanical work or additional equipment.

The present invention has been described with reference to the specific illustrative embodiments, and is not limited by the scope of the appended claims. It will be appreciated by those skilled in the art that the embodiments of the invention can be modified and modified without departing from the scope and spirit of the invention.

Claims

An unmanned ship-borne pipeline connector (10), comprising: a pipeline portion (14), a plurality of support flanges (12), and a spray gasket (26), wherein the pipeline connector (10) is formed on Between the line portion (14) and the support flange (12), wherein the line portions (14) are respectively joined together by nuts and screws, and a gasket is placed between the flange faces of the support flanges (12) a piece (20), the support flange (12) has an annular groove (22), the inside of the groove (22) is a ring (24), and the ring (24) and the groove (22) are sized Aligned, the spray shims (24) are mounted on the ring (24) for direct injection of the sealing material.
An unmanned ship-borne pipeline connector (10) according to claim 1, wherein each of said support flanges (12) is gradually reduced around a peripheral circumference so as to be supported by each of the joints during the joining process. A peripheral space (21) is left between the flange faces of the flange (12), and a line between the annular grooves (22) of the support flange (12) is formed in the vicinity of the outer edge of the space.
An unmanned shipborne pipeline connector (10) according to any of the preceding claims, wherein said ring (24) is loosely mounted inside the recess (22) and is adapted to be used with said support flange ( 12) The same material composition.
An unmanned shipborne pipeline connector (10) according to any of the preceding claims, wherein said ring (24) is located outside the bolt line near the side of said support flange (12).
An unmanned shipborne pipeline connector (10) according to any of the preceding claims, wherein if the support flange (12) leaks during operation, the viscous heat repairable sealing compound is sprayed to fill the gasket ( 20) and the space between the ring (24) to seal the leak.
An unmanned ship-borne pipeline connector (10) according to claim 5, wherein the injection of the sealing compound is accomplished by an injection valve (26).
An unmanned shipboard pipeline connector (10) according to claim 6, wherein said injection valve (26) is mounted on a ring (24) or a ring gauge (40), said ring gauge ( 40) Inside the groove (22) of the flange.
An unmanned shipborne pipeline connector (10) according to claim 5, wherein a suitable sealing compound is injected into the bolt assembly injection device (42) to complete a leak seal, said injection device (42) It can be installed during the flange connection or it can be installed when a leak occurs.
An unmanned ship-borne pipeline connector (10) according to claim 1, wherein said support flange (12) is connected by a nut and a screw (54, 56) passing through said support method The collinear hole of the blue, a hard metal lens ring gasket (60) is placed on the middle of the support flange.
An unmanned ship-borne pipeline connector (10) according to claim 9, wherein the flange face is gradually reduced at the periphery to leave a peripheral space (62) between the flange faces, A metal ring (64) is inserted into the peripheral space (62), and the metal ring (64) has a resilient clip (66) at its inner edge extending between regions outside the reduced area of the periphery of the flange. The metal ring (64) also has a series of injection ports (68) spaced apart from one another in a radial direction about the direction of the ring, the metal ring (64) also having a hole (70) for the bolt (56) to pass through, wherein The injection of the sealant is accomplished by the spray port (68) passing the sealant through the gasket (60) itself, and the elastomeric clip (66) is expanded to prevent the sealant from flowing back into the ring (64), which is typically accomplished. It is open.