CN217356098U - A terminal plugging device for semi-submerged formula platform sea pipe - Google Patents

Abstract

The utility model discloses a terminal plugging device for semi-submerged formula platform sea pipe relates to marine oil engineering technical field. Including the blind plate, blind plate central point puts and has seted up the pressure release hole, and a plurality of bolt holes have been seted up to blind plate edge equidistance, and the blind plate top is equipped with the lug, and horizontal fixedly connected with nozzle stub in the pressure release hole, nozzle stub one end are installed the needle valve, the blind plate is the integrated into one piece structure with the lug, and blind plate and lug are ordinary carbon steel plate, bolt hole and hull sea pipe end flange phase-match, fillet welding between nozzle stub and the pressure release hole, threaded connection between nozzle stub and the needle valve is equipped with the external screw thread on the outer wall of nozzle stub one end, sets up the internal thread groove of external screw thread looks adaptation on the one end inner wall of needle valve. The utility model discloses the blind plate uses ordinary carbon steel sheet processing to form, has replaced the blind flange of high API standard of price, and structural style is simple, and light in weight, workable manufacturing can realize the interim shutoff of semi-submerged platform hull sea pipe, reduction of erection time.

Description

A terminal plugging device for semi-submerged formula platform sea pipe

Technical Field

The utility model relates to an offshore oil engineering technical field specifically is a terminal plugging device for semi-submerged formula platform sea pipe.

Background

The plug at the tail end of the sea pipe generally adopts an API standard blind flange matched with a rotary flange, the blind flange is too large in thickness, the difficulty in machining a pressure relief hole is high, and the comprehensive cost is high. When the ship body sea pipe is connected with an underwater sea pipe, underwater construction is needed, and the API standard blind flange is too heavy, so that the construction difficulty is high, and the period is long. Traditional shutoff mode expense is high, and the construction degree of difficulty is big, and construction period is long, for this the utility model provides a neotype solution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a terminal plugging device for semi-submerged formula platform sea pipe to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a terminal plugging device for semi-submerged formula platform sea pipe, includes the blind plate, blind plate central point puts and has seted up the pressure release hole, and a plurality of bolt holes have been seted up to blind plate edge equidistance, and the blind plate top is equipped with the lug, and horizontal fixedly connected with nozzle stub in the pressure release hole, the needle valve is installed to nozzle stub one end.

As the preferred technical scheme in this application, blind plate and lug are the integrated into one piece structure, and blind plate and lug are ordinary carbon steel plate.

As the preferred technical scheme in this application, the bolt hole matches with hull sea pipe end flange.

As the preferable technical scheme in the application, the short pipe and the pressure relief hole are welded in a fillet mode.

As the preferred technical scheme in this application, threaded connection between nozzle stub and the needle valve is equipped with the external screw thread on the outer wall of nozzle stub one end, offers the internal thread groove of external screw thread looks adaptation on the needle valve one end inner wall.

As the preferable technical scheme in the application, the thickness of the blind plate is 30mm, the short pipe is an ASTM A steel pipe, and the size is 0.5 inch.

Compared with the prior art, the beneficial effects of the utility model are that:

this a terminal plugging device for semi-submerged platform sea pipe is different from traditional plugging device, and this device uses ordinary carbon steel plate to process and forms, has replaced the blind flange of high API standard of price, and structural style is simple, has light in weight, workable manufacturing, and convenient construction's characteristics can realize the interim shutoff of semi-submerged platform hull sea pipe, shortens operation period.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic front structural view of the present invention;

fig. 3 is a schematic view of the back structure of the present invention;

fig. 4 is a schematic side view of the present invention.

In the figure: 1. lifting lugs; 2. a blind plate; 201. bolt holes; 3. a needle valve; 4. a short pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

When plugging the tail end of a submarine pipeline of a semi-submersible platform, the tail end plugging device is used, and the problems that the traditional blind flange is too large in thickness, the pressure relief hole is machined with high difficulty, the comprehensive cost is high, the construction difficulty is high, and the period is long are solved. Compared with the traditional plugging mode, the plugging equipment is low in cost, low in construction difficulty and short in construction period.

As shown in fig. 1-4, the utility model provides a technical solution: the utility model provides a terminal plugging device for semi-submerged formula platform sea pipe, includes blind plate 2, and 2 central points of blind plate put and have seted up the pressure release hole, and 2 edges equidistance of blind plate have seted up a plurality of bolt holes 201, and 2 tops of blind plate are equipped with lug 1, and horizontal fixedly connected with nozzle stub 4 in the pressure release hole, nozzle needle 3 are installed to nozzle stub 4 one end.

It should be noted that the blind plate 2 is cut from a common carbon steel plate with a thickness of 30mm, and is light in weight and easy to process. One end of the short pipe 4 is welded to the pressure relief hole of the blind plate 2, and the short pipe 4 and the pressure relief hole are welded through fillet welding. In the towing process of the semi-submersible platform, the needle valve 3 is in a closed state, and when the semi-submersible platform is connected with an underwater sea pipe, the needle valve 3 is opened to balance the internal pressure and the external pressure of the sea pipe, so that the tail end plugging device is detached.

As a specific embodiment, the blind plate 2 and the lifting lug 1 are of an integrally formed structure, the blind plate 2 and the lifting lug 1 are both made of common carbon steel plates, and an API standard blind flange with high price is replaced, so that the structure is simple in form and light in weight.

As a specific embodiment, the bolt holes 201 are matched with the end flanges of the marine pipes of the ship body, bolts penetrate through the bolt holes 201 to fasten the plugging device and the rotating flange together during installation, and a compressed asbestos-free flat gasket is used between the blind plate 2 and the rotating flange to realize sealing.

As a specific embodiment, the short pipe 4 is in threaded connection with the needle valve 3, an external thread is arranged on the outer wall of one end of the short pipe 4, and an internal thread groove matched with the external thread is formed in the inner wall of one end of the needle valve 3. It should be noted that when the needle valve 3 is installed, the needle valve 3 only needs to be inserted into the short pipe 4, and then the needle valve 3 is screwed, so that the installation is convenient and fast.

As a specific example, the short pipe 4 is made of ASTM A106 steel pipe with the size of 0.5 inch, and the needle valve 3 is made of ASTM A182-F316 and is connected in the form of NPTF.

During installation, a bolt penetrates through the bolt hole 201 to fasten the plugging device and the rotary flange together, a compressed asbestos-free flat gasket is used between the blind plate 2 and the rotary flange to realize sealing, the needle valve 3 is in a closed state in the towing process of the semi-submersible platform, and the needle valve 3 is opened to balance the internal and external pressure of the submarine pipe when the semi-submersible platform is connected with the submarine pipe, so that the tail end plugging device is detached. The device is formed by processing a common carbon steel plate, replaces an API standard blind flange with high price, has a simple structural form, has the characteristics of light weight, easiness in processing and manufacturing and convenience in construction, can realize temporary plugging of the submarine marine pipe of the semi-submersible platform hull, and shortens the working period.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A terminal plugging device for semi-submersible platform sea pipe, includes blind plate (2), its characterized in that: the pressure relief hole has been seted up to blind plate (2) central point, and a plurality of bolt holes (201) have been seted up to blind plate (2) edge equidistance, and blind plate (2) top is equipped with lug (1), and horizontal fixedly connected with nozzle stub (4) in the pressure relief hole, needle valve (3) are installed to nozzle stub (4) one end.

2. The end plugging device for a semi-submersible platform marine vessel of claim 1, wherein: the blind plate (2) and the lifting lugs (1) are of an integrally formed structure, and the blind plate (2) and the lifting lugs (1) are both ordinary carbon steel plates.

3. The end plugging device for a semi-submersible platform marine vessel of claim 1, wherein: and the short pipe (4) and the pressure relief hole are welded in a fillet mode.

4. The end plugging device for a semi-submersible platform marine pipe of claim 1, wherein: the bolt holes (201) are matched with the end flanges of the marine pipes of the ship body.

5. The end plugging device for a semi-submersible platform marine vessel of claim 1, wherein: the short pipe (4) is in threaded connection with the needle valve (3), an external thread is arranged on the outer wall of one end of the short pipe (4), and an internal thread groove matched with the external thread is formed in the inner wall of one end of the needle valve (3).

6. The end plugging device for a semi-submersible platform marine vessel of claim 1, wherein: the thickness of the blind plate (2) is 30mm, and the short pipe (4) is an ASTM A106 steel pipe, and the size is 0.5 inch.

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